am 82446a48: (-s ours) am efe32461: am c69e7a40: Changed default mode for journal files created by sqlite.
* commit '82446a48f6001e0cb615d499678a2c8ab3af818d':
Changed default mode for journal files created by sqlite.
diff --git a/CleanSpec.mk b/CleanSpec.mk
index b84e1b6..0f535b9 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -47,3 +47,5 @@
# ************************************************
# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
# ************************************************
+
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libsqlite_intermediates)
diff --git a/ThirdPartyProject.prop b/ThirdPartyProject.prop
index eb1f6f1..7b50a79 100644
--- a/ThirdPartyProject.prop
+++ b/ThirdPartyProject.prop
@@ -1,7 +1,7 @@
# Copyright 2010 Google Inc. All Rights Reserved.
#Fri Jul 16 10:03:09 PDT 2010
-currentVersion=3.6.17
-version=3.5.9
+currentVersion=3.7.10
+version=3.7.10
isNative=true
feedurl=http\://www.sqlite.org/changes.html
name=sqlite
diff --git a/android/sqlite3_android.cpp b/android/sqlite3_android.cpp
index 98e3811..5daf15e 100644
--- a/android/sqlite3_android.cpp
+++ b/android/sqlite3_android.cpp
@@ -62,7 +62,7 @@
UCollationResult result = ucol_strcollIter(coll, &i1, &i2, &status);
if (U_FAILURE(status)) {
-// LOGE("Collation iterator error: %d\n", status);
+// ALOGE("Collation iterator error: %d\n", status);
}
if (result == UCOL_LESS) {
@@ -305,13 +305,13 @@
*/
static void tokenize(sqlite3_context * context, int argc, sqlite3_value ** argv)
{
- //LOGD("enter tokenize");
+ //ALOGD("enter tokenize");
int err;
int useTokenIndex = 0;
int useDataTag = 0;
if (!(argc >= 4 || argc <= 6)) {
- LOGE("Tokenize requires 4 to 6 arguments");
+ ALOGE("Tokenize requires 4 to 6 arguments");
sqlite3_result_null(context);
return;
}
@@ -328,7 +328,7 @@
UCollator* collator = (UCollator*)sqlite3_user_data(context);
char const * tokenTable = (char const *)sqlite3_value_text(argv[0]);
if (tokenTable == NULL) {
- LOGE("tokenTable null");
+ ALOGE("tokenTable null");
sqlite3_result_null(context);
return;
}
@@ -345,7 +345,7 @@
err = sqlite3_prepare_v2(handle, sql, -1, &statement, NULL);
sqlite3_free(sql);
if (err) {
- LOGE("prepare failed");
+ ALOGE("prepare failed");
sqlite3_result_null(context);
return;
}
@@ -362,7 +362,7 @@
int64_t rowID = sqlite3_value_int64(argv[1]);
err = sqlite3_bind_int64(statement, 2, rowID);
if (err != SQLITE_OK) {
- LOGE("bind failed");
+ ALOGE("bind failed");
sqlite3_result_null(context);
return;
}
@@ -372,7 +372,7 @@
int dataTagParamIndex = useTokenIndex ? 4 : 3;
err = sqlite3_bind_value(statement, dataTagParamIndex, argv[5]);
if (err != SQLITE_OK) {
- LOGE("bind failed");
+ ALOGE("bind failed");
sqlite3_result_null(context);
return;
}
@@ -390,7 +390,7 @@
// Get the raw bytes for the delimiter
const UChar * delim = (const UChar *)sqlite3_value_text16(argv[3]);
if (delim == NULL) {
- LOGE("can't get delimiter");
+ ALOGE("can't get delimiter");
sqlite3_result_null(context);
return;
}
@@ -411,7 +411,7 @@
uint32_t result = ucol_getSortKey(collator, token, -1, (uint8_t*)keybuf, sizeof(keybuf)-1);
if (result > sizeof(keybuf)) {
// TODO allocate memory for this super big string
- LOGE("ucol_getSortKey needs bigger buffer %d", result);
+ ALOGE("ucol_getSortKey needs bigger buffer %d", result);
break;
}
uint32_t keysize = result-1;
@@ -421,7 +421,7 @@
err = sqlite3_bind_text(statement, 1, base16buf, base16Size, SQLITE_STATIC);
if (err != SQLITE_OK) {
- LOGE(" sqlite3_bind_text16 error %d", err);
+ ALOGE(" sqlite3_bind_text16 error %d", err);
free(base16buf);
break;
}
@@ -429,7 +429,7 @@
if (useTokenIndex) {
err = sqlite3_bind_int(statement, 3, numTokens);
if (err != SQLITE_OK) {
- LOGE(" sqlite3_bind_int error %d", err);
+ ALOGE(" sqlite3_bind_int error %d", err);
free(base16buf);
break;
}
@@ -439,7 +439,7 @@
free(base16buf);
if (err != SQLITE_DONE) {
- LOGE(" sqlite3_step error %d", err);
+ ALOGE(" sqlite3_step error %d", err);
break;
}
numTokens++;
diff --git a/dist/Android.mk b/dist/Android.mk
index 2fbe345..90dc411 100644
--- a/dist/Android.mk
+++ b/dist/Android.mk
@@ -10,7 +10,24 @@
# SQLITE_TEMP_STORE=3 causes all TEMP files to go into RAM. and thats the behavior we want
# SQLITE_ENABLE_FTS3 enables usage of FTS3 - NOT FTS1 or 2.
# SQLITE_DEFAULT_AUTOVACUUM=1 causes the databases to be subject to auto-vacuum
-common_sqlite_flags := -DHAVE_USLEEP=1 -DSQLITE_DEFAULT_JOURNAL_SIZE_LIMIT=1048576 -DSQLITE_THREADSAFE=1 -DNDEBUG=1 -DSQLITE_ENABLE_MEMORY_MANAGEMENT=1 -DSQLITE_DEFAULT_AUTOVACUUM=1 -DSQLITE_TEMP_STORE=3 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_BACKWARDS -DSQLITE_DEFAULT_FILE_FORMAT=4 -DSQLITE_DEFAULT_FILE_PERMISSIONS=0600
+common_sqlite_flags := \
+ -DNDEBUG=1 \
+ -DHAVE_USLEEP=1 \
+ -DSQLITE_HAVE_ISNAN \
+ -DSQLITE_DEFAULT_JOURNAL_SIZE_LIMIT=1048576 \
+ -DSQLITE_THREADSAFE=2 \
+ -DSQLITE_TEMP_STORE=3 \
+ -DSQLITE_POWERSAFE_OVERWRITE=0 \
+ -DSQLITE_DEFAULT_FILE_FORMAT=4 \
+ -DSQLITE_DEFAULT_AUTOVACUUM=1 \
+ -DSQLITE_ENABLE_MEMORY_MANAGEMENT=1 \
+ -DSQLITE_ENABLE_FTS3 \
+ -DSQLITE_ENABLE_FTS3_BACKWARDS \
+ -DSQLITE_ENABLE_FTS4 \
+ -DSQLITE_OMIT_BUILTIN_TEST \
+ -DSQLITE_OMIT_COMPILEOPTION_DIAGS \
+ -DSQLITE_OMIT_LOAD_EXTENSION \
+ -DSQLITE_DEFAULT_FILE_PERMISSIONS=0600
common_src_files := sqlite3.c
@@ -23,7 +40,7 @@
LOCAL_LDLIBS += -lpthread -ldl
endif
-LOCAL_CFLAGS += $(common_sqlite_flags) -DUSE_PREAD64
+LOCAL_CFLAGS += $(common_sqlite_flags) -DUSE_PREAD64 -Dfdatasync=fdatasync
LOCAL_SHARED_LIBRARIES := libdl
@@ -37,11 +54,6 @@
# include android specific methods
LOCAL_WHOLE_STATIC_LIBRARIES := libsqlite3_android
-## Choose only one of the allocator systems below
-# new sqlite 3.5.6 no longer support external allocator
-#LOCAL_SRC_FILES += mem_malloc.c
-#LOCAL_SRC_FILES += mem_mspace.c
-
include $(BUILD_SHARED_LIBRARY)
diff --git a/dist/shell.c b/dist/shell.c
index eceb780..527172d 100644
--- a/dist/shell.c
+++ b/dist/shell.c
@@ -12,11 +12,22 @@
** This file contains code to implement the "sqlite" command line
** utility for accessing SQLite databases.
*/
-#if defined(_WIN32) || defined(WIN32)
+#if (defined(_WIN32) || defined(WIN32)) && !defined(_CRT_SECURE_NO_WARNINGS)
/* This needs to come before any includes for MSVC compiler */
#define _CRT_SECURE_NO_WARNINGS
#endif
+/*
+** Enable large-file support for fopen() and friends on unix.
+*/
+#ifndef SQLITE_DISABLE_LFS
+# define _LARGE_FILE 1
+# ifndef _FILE_OFFSET_BITS
+# define _FILE_OFFSET_BITS 64
+# endif
+# define _LARGEFILE_SOURCE 1
+#endif
+
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
@@ -43,10 +54,14 @@
# include <unistd.h>
#endif
+#ifdef HAVE_EDITLINE
+# include <editline/editline.h>
+#endif
#if defined(HAVE_READLINE) && HAVE_READLINE==1
# include <readline/readline.h>
# include <readline/history.h>
-#else
+#endif
+#if !defined(HAVE_EDITLINE) && (!defined(HAVE_READLINE) || HAVE_READLINE!=1)
# define readline(p) local_getline(p,stdin)
# define add_history(X)
# define read_history(X)
@@ -61,7 +76,7 @@
#else
/* Make sure isatty() has a prototype.
*/
-extern int isatty();
+extern int isatty(int);
#endif
#if defined(_WIN32_WCE)
@@ -72,6 +87,14 @@
#define isatty(x) 1
#endif
+/* True if the timer is enabled */
+static int enableTimer = 0;
+
+/* ctype macros that work with signed characters */
+#define IsSpace(X) isspace((unsigned char)X)
+#define IsDigit(X) isdigit((unsigned char)X)
+#define ToLower(X) (char)tolower((unsigned char)X)
+
#if !defined(_WIN32) && !defined(WIN32) && !defined(__OS2__) && !defined(__RTP__) && !defined(_WRS_KERNEL)
#include <sys/time.h>
#include <sys/resource.h>
@@ -79,9 +102,6 @@
/* Saved resource information for the beginning of an operation */
static struct rusage sBegin;
-/* True if the timer is enabled */
-static int enableTimer = 0;
-
/*
** Begin timing an operation
*/
@@ -125,9 +145,6 @@
typedef BOOL (WINAPI *GETPROCTIMES)(HANDLE, LPFILETIME, LPFILETIME, LPFILETIME, LPFILETIME);
static GETPROCTIMES getProcessTimesAddr = NULL;
-/* True if the timer is enabled */
-static int enableTimer = 0;
-
/*
** Check to see if we have timer support. Return 1 if necessary
** support found (or found previously).
@@ -269,23 +286,23 @@
*/
static int isNumber(const char *z, int *realnum){
if( *z=='-' || *z=='+' ) z++;
- if( !isdigit(*z) ){
+ if( !IsDigit(*z) ){
return 0;
}
z++;
if( realnum ) *realnum = 0;
- while( isdigit(*z) ){ z++; }
+ while( IsDigit(*z) ){ z++; }
if( *z=='.' ){
z++;
- if( !isdigit(*z) ) return 0;
- while( isdigit(*z) ){ z++; }
+ if( !IsDigit(*z) ) return 0;
+ while( IsDigit(*z) ){ z++; }
if( realnum ) *realnum = 1;
}
if( *z=='e' || *z=='E' ){
z++;
if( *z=='+' || *z=='-' ) z++;
- if( !isdigit(*z) ) return 0;
- while( isdigit(*z) ){ z++; }
+ if( !IsDigit(*z) ) return 0;
+ while( IsDigit(*z) ){ z++; }
if( realnum ) *realnum = 1;
}
return *z==0;
@@ -326,7 +343,6 @@
char *zLine;
int nLine;
int n;
- int eol;
if( zPrompt && *zPrompt ){
printf("%s",zPrompt);
@@ -336,8 +352,7 @@
zLine = malloc( nLine );
if( zLine==0 ) return 0;
n = 0;
- eol = 0;
- while( !eol ){
+ while( 1 ){
if( n+100>nLine ){
nLine = nLine*2 + 100;
zLine = realloc(zLine, nLine);
@@ -349,7 +364,6 @@
return 0;
}
zLine[n] = 0;
- eol = 1;
break;
}
while( zLine[n] ){ n++; }
@@ -357,7 +371,7 @@
n--;
if( n>0 && zLine[n-1]=='\r' ) n--;
zLine[n] = 0;
- eol = 1;
+ break;
}
}
zLine = realloc( zLine, n+1 );
@@ -406,6 +420,7 @@
int statsOn; /* True to display memory stats before each finalize */
int cnt; /* Number of records displayed so far */
FILE *out; /* Write results here */
+ int nErr; /* Number of errors seen */
int mode; /* An output mode setting */
int writableSchema; /* True if PRAGMA writable_schema=ON */
int showHeader; /* True to show column names in List or Column mode */
@@ -420,6 +435,7 @@
** .explain ON */
char outfile[FILENAME_MAX]; /* Filename for *out */
const char *zDbFilename; /* name of the database file */
+ const char *zVfs; /* Name of VFS to use */
sqlite3_stmt *pStmt; /* Current statement if any. */
FILE *pLog; /* Write log output here */
};
@@ -930,27 +946,33 @@
** querying the SQLITE_MASTER table.
*/
static int run_table_dump_query(
- FILE *out, /* Send output here */
- sqlite3 *db, /* Database to query */
- const char *zSelect, /* SELECT statement to extract content */
- const char *zFirstRow /* Print before first row, if not NULL */
+ struct callback_data *p, /* Query context */
+ const char *zSelect, /* SELECT statement to extract content */
+ const char *zFirstRow /* Print before first row, if not NULL */
){
sqlite3_stmt *pSelect;
int rc;
- rc = sqlite3_prepare(db, zSelect, -1, &pSelect, 0);
+ rc = sqlite3_prepare(p->db, zSelect, -1, &pSelect, 0);
if( rc!=SQLITE_OK || !pSelect ){
+ fprintf(p->out, "/**** ERROR: (%d) %s *****/\n", rc, sqlite3_errmsg(p->db));
+ p->nErr++;
return rc;
}
rc = sqlite3_step(pSelect);
while( rc==SQLITE_ROW ){
if( zFirstRow ){
- fprintf(out, "%s", zFirstRow);
+ fprintf(p->out, "%s", zFirstRow);
zFirstRow = 0;
}
- fprintf(out, "%s;\n", sqlite3_column_text(pSelect, 0));
+ fprintf(p->out, "%s;\n", sqlite3_column_text(pSelect, 0));
rc = sqlite3_step(pSelect);
}
- return sqlite3_finalize(pSelect);
+ rc = sqlite3_finalize(pSelect);
+ if( rc!=SQLITE_OK ){
+ fprintf(p->out, "/**** ERROR: (%d) %s *****/\n", rc, sqlite3_errmsg(p->db));
+ p->nErr++;
+ }
+ return rc;
}
/*
@@ -985,7 +1007,7 @@
fprintf(pArg->out, "Memory Used: %d (max %d) bytes\n", iCur, iHiwtr);
iHiwtr = iCur = -1;
sqlite3_status(SQLITE_STATUS_MALLOC_COUNT, &iCur, &iHiwtr, bReset);
- fprintf(pArg->out, "Number of Allocations: %d (max %d)\n", iCur, iHiwtr);
+ fprintf(pArg->out, "Number of Outstanding Allocations: %d (max %d)\n", iCur, iHiwtr);
/*
** Not currently used by the CLI.
** iHiwtr = iCur = -1;
@@ -1024,9 +1046,20 @@
iHiwtr = iCur = -1;
sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_USED, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Lookaside Slots Used: %d (max %d)\n", iCur, iHiwtr);
+ sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_HIT, &iCur, &iHiwtr, bReset);
+ fprintf(pArg->out, "Successful lookaside attempts: %d\n", iHiwtr);
+ sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE, &iCur, &iHiwtr, bReset);
+ fprintf(pArg->out, "Lookaside failures due to size: %d\n", iHiwtr);
+ sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL, &iCur, &iHiwtr, bReset);
+ fprintf(pArg->out, "Lookaside failures due to OOM: %d\n", iHiwtr);
iHiwtr = iCur = -1;
sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_USED, &iCur, &iHiwtr, bReset);
- fprintf(pArg->out, "Pager Heap Usage: %d bytes\n", iCur);
+ fprintf(pArg->out, "Pager Heap Usage: %d bytes\n", iCur); iHiwtr = iCur = -1;
+ sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_HIT, &iCur, &iHiwtr, 1);
+ fprintf(pArg->out, "Page cache hits: %d\n", iCur);
+ iHiwtr = iCur = -1;
+ sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_MISS, &iCur, &iHiwtr, 1);
+ fprintf(pArg->out, "Page cache misses: %d\n", iCur);
iHiwtr = iCur = -1;
sqlite3_db_status(db, SQLITE_DBSTATUS_SCHEMA_USED, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Schema Heap Usage: %d bytes\n", iCur);
@@ -1066,6 +1099,7 @@
){
sqlite3_stmt *pStmt = NULL; /* Statement to execute. */
int rc = SQLITE_OK; /* Return Code */
+ int rc2;
const char *zLeftover; /* Tail of unprocessed SQL */
if( pzErrMsg ){
@@ -1082,7 +1116,7 @@
if( !pStmt ){
/* this happens for a comment or white-space */
zSql = zLeftover;
- while( isspace(zSql[0]) ) zSql++;
+ while( IsSpace(zSql[0]) ) zSql++;
continue;
}
@@ -1098,6 +1132,15 @@
fprintf(pArg->out, "%s\n", zStmtSql ? zStmtSql : zSql);
}
+ /* Output TESTCTRL_EXPLAIN text of requested */
+ if( pArg && pArg->mode==MODE_Explain ){
+ const char *zExplain = 0;
+ sqlite3_test_control(SQLITE_TESTCTRL_EXPLAIN_STMT, pStmt, &zExplain);
+ if( zExplain && zExplain[0] ){
+ fprintf(pArg->out, "%s", zExplain);
+ }
+ }
+
/* perform the first step. this will tell us if we
** have a result set or not and how wide it is.
*/
@@ -1159,10 +1202,11 @@
/* Finalize the statement just executed. If this fails, save a
** copy of the error message. Otherwise, set zSql to point to the
** next statement to execute. */
- rc = sqlite3_finalize(pStmt);
+ rc2 = sqlite3_finalize(pStmt);
+ if( rc!=SQLITE_NOMEM ) rc = rc2;
if( rc==SQLITE_OK ){
zSql = zLeftover;
- while( isspace(zSql[0]) ) zSql++;
+ while( IsSpace(zSql[0]) ) zSql++;
}else if( pzErrMsg ){
*pzErrMsg = save_err_msg(db);
}
@@ -1265,10 +1309,10 @@
zSelect = appendText(zSelect, "|| ')' FROM ", 0);
zSelect = appendText(zSelect, zTable, '"');
- rc = run_table_dump_query(p->out, p->db, zSelect, zPrepStmt);
+ rc = run_table_dump_query(p, zSelect, zPrepStmt);
if( rc==SQLITE_CORRUPT ){
zSelect = appendText(zSelect, " ORDER BY rowid DESC", 0);
- rc = run_table_dump_query(p->out, p->db, zSelect, 0);
+ run_table_dump_query(p, zSelect, 0);
}
if( zSelect ) free(zSelect);
}
@@ -1284,19 +1328,30 @@
*/
static int run_schema_dump_query(
struct callback_data *p,
- const char *zQuery,
- char **pzErrMsg
+ const char *zQuery
){
int rc;
- rc = sqlite3_exec(p->db, zQuery, dump_callback, p, pzErrMsg);
+ char *zErr = 0;
+ rc = sqlite3_exec(p->db, zQuery, dump_callback, p, &zErr);
if( rc==SQLITE_CORRUPT ){
char *zQ2;
int len = strlen30(zQuery);
- if( pzErrMsg ) sqlite3_free(*pzErrMsg);
+ fprintf(p->out, "/****** CORRUPTION ERROR *******/\n");
+ if( zErr ){
+ fprintf(p->out, "/****** %s ******/\n", zErr);
+ sqlite3_free(zErr);
+ zErr = 0;
+ }
zQ2 = malloc( len+100 );
if( zQ2==0 ) return rc;
sqlite3_snprintf(sizeof(zQ2), zQ2, "%s ORDER BY rowid DESC", zQuery);
- rc = sqlite3_exec(p->db, zQ2, dump_callback, p, pzErrMsg);
+ rc = sqlite3_exec(p->db, zQ2, dump_callback, p, &zErr);
+ if( rc ){
+ fprintf(p->out, "/****** ERROR: %s ******/\n", zErr);
+ }else{
+ rc = SQLITE_CORRUPT;
+ }
+ sqlite3_free(zErr);
free(zQ2);
}
return rc;
@@ -1355,6 +1410,7 @@
" If TABLE specified, only list tables matching\n"
" LIKE pattern TABLE.\n"
".timeout MS Try opening locked tables for MS milliseconds\n"
+ ".vfsname ?AUX? Print the name of the VFS stack\n"
".width NUM1 NUM2 ... Set column widths for \"column\" mode\n"
;
@@ -1447,7 +1503,7 @@
int val = atoi(zArg);
int j;
for(j=0; zArg[j]; j++){
- zArg[j] = (char)tolower(zArg[j]);
+ zArg[j] = ToLower(zArg[j]);
}
if( strcmp(zArg,"on")==0 ){
val = 1;
@@ -1473,7 +1529,7 @@
/* Parse the input line into tokens.
*/
while( zLine[i] && nArg<ArraySize(azArg) ){
- while( isspace((unsigned char)zLine[i]) ){ i++; }
+ while( IsSpace(zLine[i]) ){ i++; }
if( zLine[i]==0 ) break;
if( zLine[i]=='\'' || zLine[i]=='"' ){
int delim = zLine[i++];
@@ -1485,7 +1541,7 @@
if( delim=='"' ) resolve_backslashes(azArg[nArg-1]);
}else{
azArg[nArg++] = &zLine[i];
- while( zLine[i] && !isspace((unsigned char)zLine[i]) ){ i++; }
+ while( zLine[i] && !IsSpace(zLine[i]) ){ i++; }
if( zLine[i] ) zLine[i++] = 0;
resolve_backslashes(azArg[nArg-1]);
}
@@ -1556,7 +1612,6 @@
}else
if( c=='d' && strncmp(azArg[0], "dump", n)==0 && nArg<3 ){
- char *zErrMsg = 0;
open_db(p);
/* When playing back a "dump", the content might appear in an order
** which causes immediate foreign key constraints to be violated.
@@ -1564,17 +1619,18 @@
fprintf(p->out, "PRAGMA foreign_keys=OFF;\n");
fprintf(p->out, "BEGIN TRANSACTION;\n");
p->writableSchema = 0;
- sqlite3_exec(p->db, "PRAGMA writable_schema=ON", 0, 0, 0);
+ sqlite3_exec(p->db, "SAVEPOINT dump; PRAGMA writable_schema=ON", 0, 0, 0);
+ p->nErr = 0;
if( nArg==1 ){
run_schema_dump_query(p,
"SELECT name, type, sql FROM sqlite_master "
- "WHERE sql NOT NULL AND type=='table' AND name!='sqlite_sequence'", 0
+ "WHERE sql NOT NULL AND type=='table' AND name!='sqlite_sequence'"
);
run_schema_dump_query(p,
"SELECT name, type, sql FROM sqlite_master "
- "WHERE name=='sqlite_sequence'", 0
+ "WHERE name=='sqlite_sequence'"
);
- run_table_dump_query(p->out, p->db,
+ run_table_dump_query(p,
"SELECT sql FROM sqlite_master "
"WHERE sql NOT NULL AND type IN ('index','trigger','view')", 0
);
@@ -1585,8 +1641,8 @@
run_schema_dump_query(p,
"SELECT name, type, sql FROM sqlite_master "
"WHERE tbl_name LIKE shellstatic() AND type=='table'"
- " AND sql NOT NULL", 0);
- run_table_dump_query(p->out, p->db,
+ " AND sql NOT NULL");
+ run_table_dump_query(p,
"SELECT sql FROM sqlite_master "
"WHERE sql NOT NULL"
" AND type IN ('index','trigger','view')"
@@ -1599,13 +1655,9 @@
fprintf(p->out, "PRAGMA writable_schema=OFF;\n");
p->writableSchema = 0;
}
- sqlite3_exec(p->db, "PRAGMA writable_schema=OFF", 0, 0, 0);
- if( zErrMsg ){
- fprintf(stderr,"Error: %s\n", zErrMsg);
- sqlite3_free(zErrMsg);
- }else{
- fprintf(p->out, "COMMIT;\n");
- }
+ sqlite3_exec(p->db, "PRAGMA writable_schema=OFF;", 0, 0, 0);
+ sqlite3_exec(p->db, "RELEASE dump;", 0, 0, 0);
+ fprintf(p->out, p->nErr ? "ROLLBACK; -- due to errors\n" : "COMMIT;\n");
}else
if( c=='e' && strncmp(azArg[0], "echo", n)==0 && nArg>1 && nArg<3 ){
@@ -1684,7 +1736,7 @@
fprintf(stderr, "Error: non-null separator required for import\n");
return 1;
}
- zSql = sqlite3_mprintf("SELECT * FROM '%q'", zTable);
+ zSql = sqlite3_mprintf("SELECT * FROM %s", zTable);
if( zSql==0 ){
fprintf(stderr, "Error: out of memory\n");
return 1;
@@ -1706,7 +1758,7 @@
fprintf(stderr, "Error: out of memory\n");
return 1;
}
- sqlite3_snprintf(nByte+20, zSql, "INSERT INTO '%q' VALUES(?", zTable);
+ sqlite3_snprintf(nByte+20, zSql, "INSERT INTO %s VALUES(?", zTable);
j = strlen30(zSql);
for(i=1; i<nCol; i++){
zSql[j++] = ',';
@@ -1738,7 +1790,6 @@
zCommit = "COMMIT";
while( (zLine = local_getline(0, in))!=0 ){
char *z;
- i = 0;
lineno++;
azCol[0] = zLine;
for(i=0, z=zLine; *z && *z!='\n' && *z!='\r'; z++){
@@ -1859,7 +1910,7 @@
}else
#endif
- if( c=='l' && strncmp(azArg[0], "log", n)==0 && nArg>=1 ){
+ if( c=='l' && strncmp(azArg[0], "log", n)==0 && nArg>=2 ){
const char *zFile = azArg[1];
if( p->pLog && p->pLog!=stdout && p->pLog!=stderr ){
fclose(p->pLog);
@@ -2027,7 +2078,7 @@
data.mode = MODE_Semi;
if( nArg>1 ){
int i;
- for(i=0; azArg[1][i]; i++) azArg[1][i] = (char)tolower(azArg[1][i]);
+ for(i=0; azArg[1][i]; i++) azArg[1][i] = ToLower(azArg[1][i]);
if( strcmp(azArg[1],"sqlite_master")==0 ){
char *new_argv[2], *new_colv[2];
new_argv[0] = "CREATE TABLE sqlite_master (\n"
@@ -2063,7 +2114,8 @@
" (SELECT sql sql, type type, tbl_name tbl_name, name name"
" FROM sqlite_master UNION ALL"
" SELECT sql, type, tbl_name, name FROM sqlite_temp_master) "
- "WHERE tbl_name LIKE shellstatic() AND type!='meta' AND sql NOTNULL "
+ "WHERE lower(tbl_name) LIKE shellstatic()"
+ " AND type!='meta' AND sql NOTNULL "
"ORDER BY substr(type,2,1), name",
callback, &data, &zErrMsg);
zShellStatic = 0;
@@ -2180,15 +2232,154 @@
sqlite3_free_table(azResult);
}else
+ if( c=='t' && n>=8 && strncmp(azArg[0], "testctrl", n)==0 && nArg>=2 ){
+ static const struct {
+ const char *zCtrlName; /* Name of a test-control option */
+ int ctrlCode; /* Integer code for that option */
+ } aCtrl[] = {
+ { "prng_save", SQLITE_TESTCTRL_PRNG_SAVE },
+ { "prng_restore", SQLITE_TESTCTRL_PRNG_RESTORE },
+ { "prng_reset", SQLITE_TESTCTRL_PRNG_RESET },
+ { "bitvec_test", SQLITE_TESTCTRL_BITVEC_TEST },
+ { "fault_install", SQLITE_TESTCTRL_FAULT_INSTALL },
+ { "benign_malloc_hooks", SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS },
+ { "pending_byte", SQLITE_TESTCTRL_PENDING_BYTE },
+ { "assert", SQLITE_TESTCTRL_ASSERT },
+ { "always", SQLITE_TESTCTRL_ALWAYS },
+ { "reserve", SQLITE_TESTCTRL_RESERVE },
+ { "optimizations", SQLITE_TESTCTRL_OPTIMIZATIONS },
+ { "iskeyword", SQLITE_TESTCTRL_ISKEYWORD },
+ { "scratchmalloc", SQLITE_TESTCTRL_SCRATCHMALLOC },
+ };
+ int testctrl = -1;
+ int rc = 0;
+ int i, n;
+ open_db(p);
+
+ /* convert testctrl text option to value. allow any unique prefix
+ ** of the option name, or a numerical value. */
+ n = strlen30(azArg[1]);
+ for(i=0; i<(int)(sizeof(aCtrl)/sizeof(aCtrl[0])); i++){
+ if( strncmp(azArg[1], aCtrl[i].zCtrlName, n)==0 ){
+ if( testctrl<0 ){
+ testctrl = aCtrl[i].ctrlCode;
+ }else{
+ fprintf(stderr, "ambiguous option name: \"%s\"\n", azArg[1]);
+ testctrl = -1;
+ break;
+ }
+ }
+ }
+ if( testctrl<0 ) testctrl = atoi(azArg[1]);
+ if( (testctrl<SQLITE_TESTCTRL_FIRST) || (testctrl>SQLITE_TESTCTRL_LAST) ){
+ fprintf(stderr,"Error: invalid testctrl option: %s\n", azArg[1]);
+ }else{
+ switch(testctrl){
+
+ /* sqlite3_test_control(int, db, int) */
+ case SQLITE_TESTCTRL_OPTIMIZATIONS:
+ case SQLITE_TESTCTRL_RESERVE:
+ if( nArg==3 ){
+ int opt = (int)strtol(azArg[2], 0, 0);
+ rc = sqlite3_test_control(testctrl, p->db, opt);
+ printf("%d (0x%08x)\n", rc, rc);
+ } else {
+ fprintf(stderr,"Error: testctrl %s takes a single int option\n",
+ azArg[1]);
+ }
+ break;
+
+ /* sqlite3_test_control(int) */
+ case SQLITE_TESTCTRL_PRNG_SAVE:
+ case SQLITE_TESTCTRL_PRNG_RESTORE:
+ case SQLITE_TESTCTRL_PRNG_RESET:
+ if( nArg==2 ){
+ rc = sqlite3_test_control(testctrl);
+ printf("%d (0x%08x)\n", rc, rc);
+ } else {
+ fprintf(stderr,"Error: testctrl %s takes no options\n", azArg[1]);
+ }
+ break;
+
+ /* sqlite3_test_control(int, uint) */
+ case SQLITE_TESTCTRL_PENDING_BYTE:
+ if( nArg==3 ){
+ unsigned int opt = (unsigned int)atoi(azArg[2]);
+ rc = sqlite3_test_control(testctrl, opt);
+ printf("%d (0x%08x)\n", rc, rc);
+ } else {
+ fprintf(stderr,"Error: testctrl %s takes a single unsigned"
+ " int option\n", azArg[1]);
+ }
+ break;
+
+ /* sqlite3_test_control(int, int) */
+ case SQLITE_TESTCTRL_ASSERT:
+ case SQLITE_TESTCTRL_ALWAYS:
+ if( nArg==3 ){
+ int opt = atoi(azArg[2]);
+ rc = sqlite3_test_control(testctrl, opt);
+ printf("%d (0x%08x)\n", rc, rc);
+ } else {
+ fprintf(stderr,"Error: testctrl %s takes a single int option\n",
+ azArg[1]);
+ }
+ break;
+
+ /* sqlite3_test_control(int, char *) */
+#ifdef SQLITE_N_KEYWORD
+ case SQLITE_TESTCTRL_ISKEYWORD:
+ if( nArg==3 ){
+ const char *opt = azArg[2];
+ rc = sqlite3_test_control(testctrl, opt);
+ printf("%d (0x%08x)\n", rc, rc);
+ } else {
+ fprintf(stderr,"Error: testctrl %s takes a single char * option\n",
+ azArg[1]);
+ }
+ break;
+#endif
+
+ case SQLITE_TESTCTRL_BITVEC_TEST:
+ case SQLITE_TESTCTRL_FAULT_INSTALL:
+ case SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS:
+ case SQLITE_TESTCTRL_SCRATCHMALLOC:
+ default:
+ fprintf(stderr,"Error: CLI support for testctrl %s not implemented\n",
+ azArg[1]);
+ break;
+ }
+ }
+ }else
+
if( c=='t' && n>4 && strncmp(azArg[0], "timeout", n)==0 && nArg==2 ){
open_db(p);
sqlite3_busy_timeout(p->db, atoi(azArg[1]));
}else
- if( HAS_TIMER && c=='t' && n>=5 && strncmp(azArg[0], "timer", n)==0 && nArg==2 ){
+ if( HAS_TIMER && c=='t' && n>=5 && strncmp(azArg[0], "timer", n)==0
+ && nArg==2
+ ){
enableTimer = booleanValue(azArg[1]);
}else
+ if( c=='v' && strncmp(azArg[0], "version", n)==0 ){
+ printf("SQLite %s %s\n" /*extra-version-info*/,
+ sqlite3_libversion(), sqlite3_sourceid());
+ }else
+
+ if( c=='v' && strncmp(azArg[0], "vfsname", n)==0 ){
+ const char *zDbName = nArg==2 ? azArg[1] : "main";
+ char *zVfsName = 0;
+ if( p->db ){
+ sqlite3_file_control(p->db, zDbName, SQLITE_FCNTL_VFSNAME, &zVfsName);
+ if( zVfsName ){
+ printf("%s\n", zVfsName);
+ sqlite3_free(zVfsName);
+ }
+ }
+ }else
+
if( c=='w' && strncmp(azArg[0], "width", n)==0 && nArg>1 ){
int j;
assert( nArg<=ArraySize(azArg) );
@@ -2221,7 +2412,7 @@
*/
static int _all_whitespace(const char *z){
for(; *z; z++){
- if( isspace(*(unsigned char*)z) ) continue;
+ if( IsSpace(z[0]) ) continue;
if( *z=='/' && z[1]=='*' ){
z += 2;
while( *z && (*z!='*' || z[1]!='/') ){ z++; }
@@ -2246,11 +2437,11 @@
** as is the Oracle "/".
*/
static int _is_command_terminator(const char *zLine){
- while( isspace(*(unsigned char*)zLine) ){ zLine++; };
+ while( IsSpace(zLine[0]) ){ zLine++; };
if( zLine[0]=='/' && _all_whitespace(&zLine[1]) ){
return 1; /* Oracle */
}
- if( tolower(zLine[0])=='g' && tolower(zLine[1])=='o'
+ if( ToLower(zLine[0])=='g' && ToLower(zLine[1])=='o'
&& _all_whitespace(&zLine[2]) ){
return 1; /* SQL Server */
}
@@ -2320,7 +2511,7 @@
nSqlPrior = nSql;
if( zSql==0 ){
int i;
- for(i=0; zLine[i] && isspace((unsigned char)zLine[i]); i++){}
+ for(i=0; zLine[i] && IsSpace(zLine[i]); i++){}
if( zLine[i]!=0 ){
nSql = strlen30(zLine);
zSql = malloc( nSql+3 );
@@ -2372,7 +2563,9 @@
}
}
if( zSql ){
- if( !_all_whitespace(zSql) ) fprintf(stderr, "Error: incomplete SQL: %s\n", zSql);
+ if( !_all_whitespace(zSql) ){
+ fprintf(stderr, "Error: incomplete SQL: %s\n", zSql);
+ }
free(zSql);
}
free(zLine);
@@ -2508,6 +2701,13 @@
" -stats print memory stats before each finalize\n"
" -nullvalue 'text' set text string for NULL values\n"
" -version show SQLite version\n"
+ " -vfs NAME use NAME as the default VFS\n"
+#ifdef SQLITE_ENABLE_VFSTRACE
+ " -vfstrace enable tracing of all VFS calls\n"
+#endif
+#ifdef SQLITE_ENABLE_MULTIPLEX
+ " -multiplex enable the multiplexor VFS\n"
+#endif
;
static void usage(int showDetail){
fprintf(stderr,
@@ -2530,6 +2730,7 @@
data->mode = MODE_List;
memcpy(data->separator,"|", 2);
data->showHeader = 0;
+ sqlite3_config(SQLITE_CONFIG_URI, 1);
sqlite3_config(SQLITE_CONFIG_LOG, shellLog, data);
sqlite3_snprintf(sizeof(mainPrompt), mainPrompt,"sqlite> ");
sqlite3_snprintf(sizeof(continuePrompt), continuePrompt," ...> ");
@@ -2544,6 +2745,11 @@
int i;
int rc = 0;
+ if( strcmp(sqlite3_sourceid(),SQLITE_SOURCE_ID)!=0 ){
+ fprintf(stderr, "SQLite header and source version mismatch\n%s\n%s\n",
+ sqlite3_sourceid(), SQLITE_SOURCE_ID);
+ exit(1);
+ }
Argv0 = argv[0];
main_init(&data);
stdin_is_interactive = isatty(0);
@@ -2557,6 +2763,7 @@
/* Do an initial pass through the command-line argument to locate
** the name of the database file, the name of the initialization file,
+ ** the size of the alternative malloc heap,
** and the first command to execute.
*/
for(i=1; i<argc-1; i++){
@@ -2575,6 +2782,46 @@
*/
}else if( strcmp(argv[i],"-batch")==0 ){
stdin_is_interactive = 0;
+ }else if( strcmp(argv[i],"-heap")==0 ){
+#if defined(SQLITE_ENABLE_MEMSYS3) || defined(SQLITE_ENABLE_MEMSYS5)
+ int j, c;
+ const char *zSize;
+ sqlite3_int64 szHeap;
+
+ zSize = argv[++i];
+ szHeap = atoi(zSize);
+ for(j=0; (c = zSize[j])!=0; j++){
+ if( c=='M' ){ szHeap *= 1000000; break; }
+ if( c=='K' ){ szHeap *= 1000; break; }
+ if( c=='G' ){ szHeap *= 1000000000; break; }
+ }
+ if( szHeap>0x7fff0000 ) szHeap = 0x7fff0000;
+ sqlite3_config(SQLITE_CONFIG_HEAP, malloc((int)szHeap), (int)szHeap, 64);
+#endif
+#ifdef SQLITE_ENABLE_VFSTRACE
+ }else if( strcmp(argv[i],"-vfstrace")==0 ){
+ extern int vfstrace_register(
+ const char *zTraceName,
+ const char *zOldVfsName,
+ int (*xOut)(const char*,void*),
+ void *pOutArg,
+ int makeDefault
+ );
+ vfstrace_register("trace",0,(int(*)(const char*,void*))fputs,stderr,1);
+#endif
+#ifdef SQLITE_ENABLE_MULTIPLEX
+ }else if( strcmp(argv[i],"-multiplex")==0 ){
+ extern int sqlite3_multiple_initialize(const char*,int);
+ sqlite3_multiplex_initialize(0, 1);
+#endif
+ }else if( strcmp(argv[i],"-vfs")==0 ){
+ sqlite3_vfs *pVfs = sqlite3_vfs_find(argv[++i]);
+ if( pVfs ){
+ sqlite3_vfs_register(pVfs, 1);
+ }else{
+ fprintf(stderr, "no such VFS: \"%s\"\n", argv[i]);
+ exit(1);
+ }
}
}
if( i<argc ){
@@ -2675,12 +2922,24 @@
}else if( strcmp(z,"-bail")==0 ){
bail_on_error = 1;
}else if( strcmp(z,"-version")==0 ){
- printf("%s\n", sqlite3_libversion());
+ printf("%s %s\n", sqlite3_libversion(), sqlite3_sourceid());
return 0;
}else if( strcmp(z,"-interactive")==0 ){
stdin_is_interactive = 1;
}else if( strcmp(z,"-batch")==0 ){
stdin_is_interactive = 0;
+ }else if( strcmp(z,"-heap")==0 ){
+ i++;
+ }else if( strcmp(z,"-vfs")==0 ){
+ i++;
+#ifdef SQLITE_ENABLE_VFSTRACE
+ }else if( strcmp(z,"-vfstrace")==0 ){
+ i++;
+#endif
+#ifdef SQLITE_ENABLE_MULTIPLEX
+ }else if( strcmp(z,"-multiplex")==0 ){
+ i++;
+#endif
}else if( strcmp(z,"-help")==0 || strcmp(z, "--help")==0 ){
usage(1);
}else{
@@ -2714,10 +2973,10 @@
char *zHistory = 0;
int nHistory;
printf(
- "SQLite version %s\n"
+ "SQLite version %s %.19s\n" /*extra-version-info*/
"Enter \".help\" for instructions\n"
"Enter SQL statements terminated with a \";\"\n",
- sqlite3_libversion()
+ sqlite3_libversion(), sqlite3_sourceid()
);
zHome = find_home_dir();
if( zHome ){
@@ -2742,11 +3001,7 @@
}
set_table_name(&data, 0);
if( data.db ){
- if( sqlite3_close(data.db)!=SQLITE_OK ){
- fprintf(stderr,"Error: cannot close database \"%s\"\n",
- sqlite3_errmsg(db));
- rc++;
- }
+ sqlite3_close(data.db);
}
return rc;
}
diff --git a/dist/shell.c.orig b/dist/shell.c.orig
index c5aa40c..31d3dd8 100644
--- a/dist/shell.c.orig
+++ b/dist/shell.c.orig
@@ -12,11 +12,22 @@
** This file contains code to implement the "sqlite" command line
** utility for accessing SQLite databases.
*/
-#if defined(_WIN32) || defined(WIN32)
+#if (defined(_WIN32) || defined(WIN32)) && !defined(_CRT_SECURE_NO_WARNINGS)
/* This needs to come before any includes for MSVC compiler */
#define _CRT_SECURE_NO_WARNINGS
#endif
+/*
+** Enable large-file support for fopen() and friends on unix.
+*/
+#ifndef SQLITE_DISABLE_LFS
+# define _LARGE_FILE 1
+# ifndef _FILE_OFFSET_BITS
+# define _FILE_OFFSET_BITS 64
+# endif
+# define _LARGEFILE_SOURCE 1
+#endif
+
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
@@ -38,10 +49,14 @@
# include <unistd.h>
#endif
+#ifdef HAVE_EDITLINE
+# include <editline/editline.h>
+#endif
#if defined(HAVE_READLINE) && HAVE_READLINE==1
# include <readline/readline.h>
# include <readline/history.h>
-#else
+#endif
+#if !defined(HAVE_EDITLINE) && (!defined(HAVE_READLINE) || HAVE_READLINE!=1)
# define readline(p) local_getline(p,stdin)
# define add_history(X)
# define read_history(X)
@@ -56,7 +71,7 @@
#else
/* Make sure isatty() has a prototype.
*/
-extern int isatty();
+extern int isatty(int);
#endif
#if defined(_WIN32_WCE)
@@ -67,6 +82,14 @@
#define isatty(x) 1
#endif
+/* True if the timer is enabled */
+static int enableTimer = 0;
+
+/* ctype macros that work with signed characters */
+#define IsSpace(X) isspace((unsigned char)X)
+#define IsDigit(X) isdigit((unsigned char)X)
+#define ToLower(X) (char)tolower((unsigned char)X)
+
#if !defined(_WIN32) && !defined(WIN32) && !defined(__OS2__) && !defined(__RTP__) && !defined(_WRS_KERNEL)
#include <sys/time.h>
#include <sys/resource.h>
@@ -74,9 +97,6 @@
/* Saved resource information for the beginning of an operation */
static struct rusage sBegin;
-/* True if the timer is enabled */
-static int enableTimer = 0;
-
/*
** Begin timing an operation
*/
@@ -120,9 +140,6 @@
typedef BOOL (WINAPI *GETPROCTIMES)(HANDLE, LPFILETIME, LPFILETIME, LPFILETIME, LPFILETIME);
static GETPROCTIMES getProcessTimesAddr = NULL;
-/* True if the timer is enabled */
-static int enableTimer = 0;
-
/*
** Check to see if we have timer support. Return 1 if necessary
** support found (or found previously).
@@ -264,23 +281,23 @@
*/
static int isNumber(const char *z, int *realnum){
if( *z=='-' || *z=='+' ) z++;
- if( !isdigit(*z) ){
+ if( !IsDigit(*z) ){
return 0;
}
z++;
if( realnum ) *realnum = 0;
- while( isdigit(*z) ){ z++; }
+ while( IsDigit(*z) ){ z++; }
if( *z=='.' ){
z++;
- if( !isdigit(*z) ) return 0;
- while( isdigit(*z) ){ z++; }
+ if( !IsDigit(*z) ) return 0;
+ while( IsDigit(*z) ){ z++; }
if( realnum ) *realnum = 1;
}
if( *z=='e' || *z=='E' ){
z++;
if( *z=='+' || *z=='-' ) z++;
- if( !isdigit(*z) ) return 0;
- while( isdigit(*z) ){ z++; }
+ if( !IsDigit(*z) ) return 0;
+ while( IsDigit(*z) ){ z++; }
if( realnum ) *realnum = 1;
}
return *z==0;
@@ -321,7 +338,6 @@
char *zLine;
int nLine;
int n;
- int eol;
if( zPrompt && *zPrompt ){
printf("%s",zPrompt);
@@ -331,8 +347,7 @@
zLine = malloc( nLine );
if( zLine==0 ) return 0;
n = 0;
- eol = 0;
- while( !eol ){
+ while( 1 ){
if( n+100>nLine ){
nLine = nLine*2 + 100;
zLine = realloc(zLine, nLine);
@@ -344,7 +359,6 @@
return 0;
}
zLine[n] = 0;
- eol = 1;
break;
}
while( zLine[n] ){ n++; }
@@ -352,7 +366,7 @@
n--;
if( n>0 && zLine[n-1]=='\r' ) n--;
zLine[n] = 0;
- eol = 1;
+ break;
}
}
zLine = realloc( zLine, n+1 );
@@ -401,6 +415,7 @@
int statsOn; /* True to display memory stats before each finalize */
int cnt; /* Number of records displayed so far */
FILE *out; /* Write results here */
+ int nErr; /* Number of errors seen */
int mode; /* An output mode setting */
int writableSchema; /* True if PRAGMA writable_schema=ON */
int showHeader; /* True to show column names in List or Column mode */
@@ -415,6 +430,7 @@
** .explain ON */
char outfile[FILENAME_MAX]; /* Filename for *out */
const char *zDbFilename; /* name of the database file */
+ const char *zVfs; /* Name of VFS to use */
sqlite3_stmt *pStmt; /* Current statement if any. */
FILE *pLog; /* Write log output here */
};
@@ -925,27 +941,33 @@
** querying the SQLITE_MASTER table.
*/
static int run_table_dump_query(
- FILE *out, /* Send output here */
- sqlite3 *db, /* Database to query */
- const char *zSelect, /* SELECT statement to extract content */
- const char *zFirstRow /* Print before first row, if not NULL */
+ struct callback_data *p, /* Query context */
+ const char *zSelect, /* SELECT statement to extract content */
+ const char *zFirstRow /* Print before first row, if not NULL */
){
sqlite3_stmt *pSelect;
int rc;
- rc = sqlite3_prepare(db, zSelect, -1, &pSelect, 0);
+ rc = sqlite3_prepare(p->db, zSelect, -1, &pSelect, 0);
if( rc!=SQLITE_OK || !pSelect ){
+ fprintf(p->out, "/**** ERROR: (%d) %s *****/\n", rc, sqlite3_errmsg(p->db));
+ p->nErr++;
return rc;
}
rc = sqlite3_step(pSelect);
while( rc==SQLITE_ROW ){
if( zFirstRow ){
- fprintf(out, "%s", zFirstRow);
+ fprintf(p->out, "%s", zFirstRow);
zFirstRow = 0;
}
- fprintf(out, "%s;\n", sqlite3_column_text(pSelect, 0));
+ fprintf(p->out, "%s;\n", sqlite3_column_text(pSelect, 0));
rc = sqlite3_step(pSelect);
}
- return sqlite3_finalize(pSelect);
+ rc = sqlite3_finalize(pSelect);
+ if( rc!=SQLITE_OK ){
+ fprintf(p->out, "/**** ERROR: (%d) %s *****/\n", rc, sqlite3_errmsg(p->db));
+ p->nErr++;
+ }
+ return rc;
}
/*
@@ -980,7 +1002,7 @@
fprintf(pArg->out, "Memory Used: %d (max %d) bytes\n", iCur, iHiwtr);
iHiwtr = iCur = -1;
sqlite3_status(SQLITE_STATUS_MALLOC_COUNT, &iCur, &iHiwtr, bReset);
- fprintf(pArg->out, "Number of Allocations: %d (max %d)\n", iCur, iHiwtr);
+ fprintf(pArg->out, "Number of Outstanding Allocations: %d (max %d)\n", iCur, iHiwtr);
/*
** Not currently used by the CLI.
** iHiwtr = iCur = -1;
@@ -1019,9 +1041,20 @@
iHiwtr = iCur = -1;
sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_USED, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Lookaside Slots Used: %d (max %d)\n", iCur, iHiwtr);
+ sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_HIT, &iCur, &iHiwtr, bReset);
+ fprintf(pArg->out, "Successful lookaside attempts: %d\n", iHiwtr);
+ sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE, &iCur, &iHiwtr, bReset);
+ fprintf(pArg->out, "Lookaside failures due to size: %d\n", iHiwtr);
+ sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL, &iCur, &iHiwtr, bReset);
+ fprintf(pArg->out, "Lookaside failures due to OOM: %d\n", iHiwtr);
iHiwtr = iCur = -1;
sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_USED, &iCur, &iHiwtr, bReset);
- fprintf(pArg->out, "Pager Heap Usage: %d bytes\n", iCur);
+ fprintf(pArg->out, "Pager Heap Usage: %d bytes\n", iCur); iHiwtr = iCur = -1;
+ sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_HIT, &iCur, &iHiwtr, 1);
+ fprintf(pArg->out, "Page cache hits: %d\n", iCur);
+ iHiwtr = iCur = -1;
+ sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_MISS, &iCur, &iHiwtr, 1);
+ fprintf(pArg->out, "Page cache misses: %d\n", iCur);
iHiwtr = iCur = -1;
sqlite3_db_status(db, SQLITE_DBSTATUS_SCHEMA_USED, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Schema Heap Usage: %d bytes\n", iCur);
@@ -1061,6 +1094,7 @@
){
sqlite3_stmt *pStmt = NULL; /* Statement to execute. */
int rc = SQLITE_OK; /* Return Code */
+ int rc2;
const char *zLeftover; /* Tail of unprocessed SQL */
if( pzErrMsg ){
@@ -1077,7 +1111,7 @@
if( !pStmt ){
/* this happens for a comment or white-space */
zSql = zLeftover;
- while( isspace(zSql[0]) ) zSql++;
+ while( IsSpace(zSql[0]) ) zSql++;
continue;
}
@@ -1093,6 +1127,15 @@
fprintf(pArg->out, "%s\n", zStmtSql ? zStmtSql : zSql);
}
+ /* Output TESTCTRL_EXPLAIN text of requested */
+ if( pArg && pArg->mode==MODE_Explain ){
+ const char *zExplain = 0;
+ sqlite3_test_control(SQLITE_TESTCTRL_EXPLAIN_STMT, pStmt, &zExplain);
+ if( zExplain && zExplain[0] ){
+ fprintf(pArg->out, "%s", zExplain);
+ }
+ }
+
/* perform the first step. this will tell us if we
** have a result set or not and how wide it is.
*/
@@ -1154,10 +1197,11 @@
/* Finalize the statement just executed. If this fails, save a
** copy of the error message. Otherwise, set zSql to point to the
** next statement to execute. */
- rc = sqlite3_finalize(pStmt);
+ rc2 = sqlite3_finalize(pStmt);
+ if( rc!=SQLITE_NOMEM ) rc = rc2;
if( rc==SQLITE_OK ){
zSql = zLeftover;
- while( isspace(zSql[0]) ) zSql++;
+ while( IsSpace(zSql[0]) ) zSql++;
}else if( pzErrMsg ){
*pzErrMsg = save_err_msg(db);
}
@@ -1260,10 +1304,10 @@
zSelect = appendText(zSelect, "|| ')' FROM ", 0);
zSelect = appendText(zSelect, zTable, '"');
- rc = run_table_dump_query(p->out, p->db, zSelect, zPrepStmt);
+ rc = run_table_dump_query(p, zSelect, zPrepStmt);
if( rc==SQLITE_CORRUPT ){
zSelect = appendText(zSelect, " ORDER BY rowid DESC", 0);
- rc = run_table_dump_query(p->out, p->db, zSelect, 0);
+ run_table_dump_query(p, zSelect, 0);
}
if( zSelect ) free(zSelect);
}
@@ -1279,19 +1323,30 @@
*/
static int run_schema_dump_query(
struct callback_data *p,
- const char *zQuery,
- char **pzErrMsg
+ const char *zQuery
){
int rc;
- rc = sqlite3_exec(p->db, zQuery, dump_callback, p, pzErrMsg);
+ char *zErr = 0;
+ rc = sqlite3_exec(p->db, zQuery, dump_callback, p, &zErr);
if( rc==SQLITE_CORRUPT ){
char *zQ2;
int len = strlen30(zQuery);
- if( pzErrMsg ) sqlite3_free(*pzErrMsg);
+ fprintf(p->out, "/****** CORRUPTION ERROR *******/\n");
+ if( zErr ){
+ fprintf(p->out, "/****** %s ******/\n", zErr);
+ sqlite3_free(zErr);
+ zErr = 0;
+ }
zQ2 = malloc( len+100 );
if( zQ2==0 ) return rc;
sqlite3_snprintf(sizeof(zQ2), zQ2, "%s ORDER BY rowid DESC", zQuery);
- rc = sqlite3_exec(p->db, zQ2, dump_callback, p, pzErrMsg);
+ rc = sqlite3_exec(p->db, zQ2, dump_callback, p, &zErr);
+ if( rc ){
+ fprintf(p->out, "/****** ERROR: %s ******/\n", zErr);
+ }else{
+ rc = SQLITE_CORRUPT;
+ }
+ sqlite3_free(zErr);
free(zQ2);
}
return rc;
@@ -1350,6 +1405,7 @@
" If TABLE specified, only list tables matching\n"
" LIKE pattern TABLE.\n"
".timeout MS Try opening locked tables for MS milliseconds\n"
+ ".vfsname ?AUX? Print the name of the VFS stack\n"
".width NUM1 NUM2 ... Set column widths for \"column\" mode\n"
;
@@ -1428,7 +1484,7 @@
int val = atoi(zArg);
int j;
for(j=0; zArg[j]; j++){
- zArg[j] = (char)tolower(zArg[j]);
+ zArg[j] = ToLower(zArg[j]);
}
if( strcmp(zArg,"on")==0 ){
val = 1;
@@ -1454,7 +1510,7 @@
/* Parse the input line into tokens.
*/
while( zLine[i] && nArg<ArraySize(azArg) ){
- while( isspace((unsigned char)zLine[i]) ){ i++; }
+ while( IsSpace(zLine[i]) ){ i++; }
if( zLine[i]==0 ) break;
if( zLine[i]=='\'' || zLine[i]=='"' ){
int delim = zLine[i++];
@@ -1466,7 +1522,7 @@
if( delim=='"' ) resolve_backslashes(azArg[nArg-1]);
}else{
azArg[nArg++] = &zLine[i];
- while( zLine[i] && !isspace((unsigned char)zLine[i]) ){ i++; }
+ while( zLine[i] && !IsSpace(zLine[i]) ){ i++; }
if( zLine[i] ) zLine[i++] = 0;
resolve_backslashes(azArg[nArg-1]);
}
@@ -1537,7 +1593,6 @@
}else
if( c=='d' && strncmp(azArg[0], "dump", n)==0 && nArg<3 ){
- char *zErrMsg = 0;
open_db(p);
/* When playing back a "dump", the content might appear in an order
** which causes immediate foreign key constraints to be violated.
@@ -1545,17 +1600,18 @@
fprintf(p->out, "PRAGMA foreign_keys=OFF;\n");
fprintf(p->out, "BEGIN TRANSACTION;\n");
p->writableSchema = 0;
- sqlite3_exec(p->db, "PRAGMA writable_schema=ON", 0, 0, 0);
+ sqlite3_exec(p->db, "SAVEPOINT dump; PRAGMA writable_schema=ON", 0, 0, 0);
+ p->nErr = 0;
if( nArg==1 ){
run_schema_dump_query(p,
"SELECT name, type, sql FROM sqlite_master "
- "WHERE sql NOT NULL AND type=='table' AND name!='sqlite_sequence'", 0
+ "WHERE sql NOT NULL AND type=='table' AND name!='sqlite_sequence'"
);
run_schema_dump_query(p,
"SELECT name, type, sql FROM sqlite_master "
- "WHERE name=='sqlite_sequence'", 0
+ "WHERE name=='sqlite_sequence'"
);
- run_table_dump_query(p->out, p->db,
+ run_table_dump_query(p,
"SELECT sql FROM sqlite_master "
"WHERE sql NOT NULL AND type IN ('index','trigger','view')", 0
);
@@ -1566,8 +1622,8 @@
run_schema_dump_query(p,
"SELECT name, type, sql FROM sqlite_master "
"WHERE tbl_name LIKE shellstatic() AND type=='table'"
- " AND sql NOT NULL", 0);
- run_table_dump_query(p->out, p->db,
+ " AND sql NOT NULL");
+ run_table_dump_query(p,
"SELECT sql FROM sqlite_master "
"WHERE sql NOT NULL"
" AND type IN ('index','trigger','view')"
@@ -1580,13 +1636,9 @@
fprintf(p->out, "PRAGMA writable_schema=OFF;\n");
p->writableSchema = 0;
}
- sqlite3_exec(p->db, "PRAGMA writable_schema=OFF", 0, 0, 0);
- if( zErrMsg ){
- fprintf(stderr,"Error: %s\n", zErrMsg);
- sqlite3_free(zErrMsg);
- }else{
- fprintf(p->out, "COMMIT;\n");
- }
+ sqlite3_exec(p->db, "PRAGMA writable_schema=OFF;", 0, 0, 0);
+ sqlite3_exec(p->db, "RELEASE dump;", 0, 0, 0);
+ fprintf(p->out, p->nErr ? "ROLLBACK; -- due to errors\n" : "COMMIT;\n");
}else
if( c=='e' && strncmp(azArg[0], "echo", n)==0 && nArg>1 && nArg<3 ){
@@ -1665,7 +1717,7 @@
fprintf(stderr, "Error: non-null separator required for import\n");
return 1;
}
- zSql = sqlite3_mprintf("SELECT * FROM '%q'", zTable);
+ zSql = sqlite3_mprintf("SELECT * FROM %s", zTable);
if( zSql==0 ){
fprintf(stderr, "Error: out of memory\n");
return 1;
@@ -1687,7 +1739,7 @@
fprintf(stderr, "Error: out of memory\n");
return 1;
}
- sqlite3_snprintf(nByte+20, zSql, "INSERT INTO '%q' VALUES(?", zTable);
+ sqlite3_snprintf(nByte+20, zSql, "INSERT INTO %s VALUES(?", zTable);
j = strlen30(zSql);
for(i=1; i<nCol; i++){
zSql[j++] = ',';
@@ -1719,7 +1771,6 @@
zCommit = "COMMIT";
while( (zLine = local_getline(0, in))!=0 ){
char *z;
- i = 0;
lineno++;
azCol[0] = zLine;
for(i=0, z=zLine; *z && *z!='\n' && *z!='\r'; z++){
@@ -1840,7 +1891,7 @@
}else
#endif
- if( c=='l' && strncmp(azArg[0], "log", n)==0 && nArg>=1 ){
+ if( c=='l' && strncmp(azArg[0], "log", n)==0 && nArg>=2 ){
const char *zFile = azArg[1];
if( p->pLog && p->pLog!=stdout && p->pLog!=stderr ){
fclose(p->pLog);
@@ -2008,7 +2059,7 @@
data.mode = MODE_Semi;
if( nArg>1 ){
int i;
- for(i=0; azArg[1][i]; i++) azArg[1][i] = (char)tolower(azArg[1][i]);
+ for(i=0; azArg[1][i]; i++) azArg[1][i] = ToLower(azArg[1][i]);
if( strcmp(azArg[1],"sqlite_master")==0 ){
char *new_argv[2], *new_colv[2];
new_argv[0] = "CREATE TABLE sqlite_master (\n"
@@ -2044,7 +2095,8 @@
" (SELECT sql sql, type type, tbl_name tbl_name, name name"
" FROM sqlite_master UNION ALL"
" SELECT sql, type, tbl_name, name FROM sqlite_temp_master) "
- "WHERE tbl_name LIKE shellstatic() AND type!='meta' AND sql NOTNULL "
+ "WHERE lower(tbl_name) LIKE shellstatic()"
+ " AND type!='meta' AND sql NOTNULL "
"ORDER BY substr(type,2,1), name",
callback, &data, &zErrMsg);
zShellStatic = 0;
@@ -2161,15 +2213,154 @@
sqlite3_free_table(azResult);
}else
+ if( c=='t' && n>=8 && strncmp(azArg[0], "testctrl", n)==0 && nArg>=2 ){
+ static const struct {
+ const char *zCtrlName; /* Name of a test-control option */
+ int ctrlCode; /* Integer code for that option */
+ } aCtrl[] = {
+ { "prng_save", SQLITE_TESTCTRL_PRNG_SAVE },
+ { "prng_restore", SQLITE_TESTCTRL_PRNG_RESTORE },
+ { "prng_reset", SQLITE_TESTCTRL_PRNG_RESET },
+ { "bitvec_test", SQLITE_TESTCTRL_BITVEC_TEST },
+ { "fault_install", SQLITE_TESTCTRL_FAULT_INSTALL },
+ { "benign_malloc_hooks", SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS },
+ { "pending_byte", SQLITE_TESTCTRL_PENDING_BYTE },
+ { "assert", SQLITE_TESTCTRL_ASSERT },
+ { "always", SQLITE_TESTCTRL_ALWAYS },
+ { "reserve", SQLITE_TESTCTRL_RESERVE },
+ { "optimizations", SQLITE_TESTCTRL_OPTIMIZATIONS },
+ { "iskeyword", SQLITE_TESTCTRL_ISKEYWORD },
+ { "scratchmalloc", SQLITE_TESTCTRL_SCRATCHMALLOC },
+ };
+ int testctrl = -1;
+ int rc = 0;
+ int i, n;
+ open_db(p);
+
+ /* convert testctrl text option to value. allow any unique prefix
+ ** of the option name, or a numerical value. */
+ n = strlen30(azArg[1]);
+ for(i=0; i<(int)(sizeof(aCtrl)/sizeof(aCtrl[0])); i++){
+ if( strncmp(azArg[1], aCtrl[i].zCtrlName, n)==0 ){
+ if( testctrl<0 ){
+ testctrl = aCtrl[i].ctrlCode;
+ }else{
+ fprintf(stderr, "ambiguous option name: \"%s\"\n", azArg[1]);
+ testctrl = -1;
+ break;
+ }
+ }
+ }
+ if( testctrl<0 ) testctrl = atoi(azArg[1]);
+ if( (testctrl<SQLITE_TESTCTRL_FIRST) || (testctrl>SQLITE_TESTCTRL_LAST) ){
+ fprintf(stderr,"Error: invalid testctrl option: %s\n", azArg[1]);
+ }else{
+ switch(testctrl){
+
+ /* sqlite3_test_control(int, db, int) */
+ case SQLITE_TESTCTRL_OPTIMIZATIONS:
+ case SQLITE_TESTCTRL_RESERVE:
+ if( nArg==3 ){
+ int opt = (int)strtol(azArg[2], 0, 0);
+ rc = sqlite3_test_control(testctrl, p->db, opt);
+ printf("%d (0x%08x)\n", rc, rc);
+ } else {
+ fprintf(stderr,"Error: testctrl %s takes a single int option\n",
+ azArg[1]);
+ }
+ break;
+
+ /* sqlite3_test_control(int) */
+ case SQLITE_TESTCTRL_PRNG_SAVE:
+ case SQLITE_TESTCTRL_PRNG_RESTORE:
+ case SQLITE_TESTCTRL_PRNG_RESET:
+ if( nArg==2 ){
+ rc = sqlite3_test_control(testctrl);
+ printf("%d (0x%08x)\n", rc, rc);
+ } else {
+ fprintf(stderr,"Error: testctrl %s takes no options\n", azArg[1]);
+ }
+ break;
+
+ /* sqlite3_test_control(int, uint) */
+ case SQLITE_TESTCTRL_PENDING_BYTE:
+ if( nArg==3 ){
+ unsigned int opt = (unsigned int)atoi(azArg[2]);
+ rc = sqlite3_test_control(testctrl, opt);
+ printf("%d (0x%08x)\n", rc, rc);
+ } else {
+ fprintf(stderr,"Error: testctrl %s takes a single unsigned"
+ " int option\n", azArg[1]);
+ }
+ break;
+
+ /* sqlite3_test_control(int, int) */
+ case SQLITE_TESTCTRL_ASSERT:
+ case SQLITE_TESTCTRL_ALWAYS:
+ if( nArg==3 ){
+ int opt = atoi(azArg[2]);
+ rc = sqlite3_test_control(testctrl, opt);
+ printf("%d (0x%08x)\n", rc, rc);
+ } else {
+ fprintf(stderr,"Error: testctrl %s takes a single int option\n",
+ azArg[1]);
+ }
+ break;
+
+ /* sqlite3_test_control(int, char *) */
+#ifdef SQLITE_N_KEYWORD
+ case SQLITE_TESTCTRL_ISKEYWORD:
+ if( nArg==3 ){
+ const char *opt = azArg[2];
+ rc = sqlite3_test_control(testctrl, opt);
+ printf("%d (0x%08x)\n", rc, rc);
+ } else {
+ fprintf(stderr,"Error: testctrl %s takes a single char * option\n",
+ azArg[1]);
+ }
+ break;
+#endif
+
+ case SQLITE_TESTCTRL_BITVEC_TEST:
+ case SQLITE_TESTCTRL_FAULT_INSTALL:
+ case SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS:
+ case SQLITE_TESTCTRL_SCRATCHMALLOC:
+ default:
+ fprintf(stderr,"Error: CLI support for testctrl %s not implemented\n",
+ azArg[1]);
+ break;
+ }
+ }
+ }else
+
if( c=='t' && n>4 && strncmp(azArg[0], "timeout", n)==0 && nArg==2 ){
open_db(p);
sqlite3_busy_timeout(p->db, atoi(azArg[1]));
}else
- if( HAS_TIMER && c=='t' && n>=5 && strncmp(azArg[0], "timer", n)==0 && nArg==2 ){
+ if( HAS_TIMER && c=='t' && n>=5 && strncmp(azArg[0], "timer", n)==0
+ && nArg==2
+ ){
enableTimer = booleanValue(azArg[1]);
}else
+ if( c=='v' && strncmp(azArg[0], "version", n)==0 ){
+ printf("SQLite %s %s\n" /*extra-version-info*/,
+ sqlite3_libversion(), sqlite3_sourceid());
+ }else
+
+ if( c=='v' && strncmp(azArg[0], "vfsname", n)==0 ){
+ const char *zDbName = nArg==2 ? azArg[1] : "main";
+ char *zVfsName = 0;
+ if( p->db ){
+ sqlite3_file_control(p->db, zDbName, SQLITE_FCNTL_VFSNAME, &zVfsName);
+ if( zVfsName ){
+ printf("%s\n", zVfsName);
+ sqlite3_free(zVfsName);
+ }
+ }
+ }else
+
if( c=='w' && strncmp(azArg[0], "width", n)==0 && nArg>1 ){
int j;
assert( nArg<=ArraySize(azArg) );
@@ -2202,7 +2393,7 @@
*/
static int _all_whitespace(const char *z){
for(; *z; z++){
- if( isspace(*(unsigned char*)z) ) continue;
+ if( IsSpace(z[0]) ) continue;
if( *z=='/' && z[1]=='*' ){
z += 2;
while( *z && (*z!='*' || z[1]!='/') ){ z++; }
@@ -2227,11 +2418,11 @@
** as is the Oracle "/".
*/
static int _is_command_terminator(const char *zLine){
- while( isspace(*(unsigned char*)zLine) ){ zLine++; };
+ while( IsSpace(zLine[0]) ){ zLine++; };
if( zLine[0]=='/' && _all_whitespace(&zLine[1]) ){
return 1; /* Oracle */
}
- if( tolower(zLine[0])=='g' && tolower(zLine[1])=='o'
+ if( ToLower(zLine[0])=='g' && ToLower(zLine[1])=='o'
&& _all_whitespace(&zLine[2]) ){
return 1; /* SQL Server */
}
@@ -2301,7 +2492,7 @@
nSqlPrior = nSql;
if( zSql==0 ){
int i;
- for(i=0; zLine[i] && isspace((unsigned char)zLine[i]); i++){}
+ for(i=0; zLine[i] && IsSpace(zLine[i]); i++){}
if( zLine[i]!=0 ){
nSql = strlen30(zLine);
zSql = malloc( nSql+3 );
@@ -2353,7 +2544,9 @@
}
}
if( zSql ){
- if( !_all_whitespace(zSql) ) fprintf(stderr, "Error: incomplete SQL: %s\n", zSql);
+ if( !_all_whitespace(zSql) ){
+ fprintf(stderr, "Error: incomplete SQL: %s\n", zSql);
+ }
free(zSql);
}
free(zLine);
@@ -2489,6 +2682,13 @@
" -stats print memory stats before each finalize\n"
" -nullvalue 'text' set text string for NULL values\n"
" -version show SQLite version\n"
+ " -vfs NAME use NAME as the default VFS\n"
+#ifdef SQLITE_ENABLE_VFSTRACE
+ " -vfstrace enable tracing of all VFS calls\n"
+#endif
+#ifdef SQLITE_ENABLE_MULTIPLEX
+ " -multiplex enable the multiplexor VFS\n"
+#endif
;
static void usage(int showDetail){
fprintf(stderr,
@@ -2511,6 +2711,7 @@
data->mode = MODE_List;
memcpy(data->separator,"|", 2);
data->showHeader = 0;
+ sqlite3_config(SQLITE_CONFIG_URI, 1);
sqlite3_config(SQLITE_CONFIG_LOG, shellLog, data);
sqlite3_snprintf(sizeof(mainPrompt), mainPrompt,"sqlite> ");
sqlite3_snprintf(sizeof(continuePrompt), continuePrompt," ...> ");
@@ -2525,6 +2726,11 @@
int i;
int rc = 0;
+ if( strcmp(sqlite3_sourceid(),SQLITE_SOURCE_ID)!=0 ){
+ fprintf(stderr, "SQLite header and source version mismatch\n%s\n%s\n",
+ sqlite3_sourceid(), SQLITE_SOURCE_ID);
+ exit(1);
+ }
Argv0 = argv[0];
main_init(&data);
stdin_is_interactive = isatty(0);
@@ -2538,6 +2744,7 @@
/* Do an initial pass through the command-line argument to locate
** the name of the database file, the name of the initialization file,
+ ** the size of the alternative malloc heap,
** and the first command to execute.
*/
for(i=1; i<argc-1; i++){
@@ -2556,6 +2763,46 @@
*/
}else if( strcmp(argv[i],"-batch")==0 ){
stdin_is_interactive = 0;
+ }else if( strcmp(argv[i],"-heap")==0 ){
+#if defined(SQLITE_ENABLE_MEMSYS3) || defined(SQLITE_ENABLE_MEMSYS5)
+ int j, c;
+ const char *zSize;
+ sqlite3_int64 szHeap;
+
+ zSize = argv[++i];
+ szHeap = atoi(zSize);
+ for(j=0; (c = zSize[j])!=0; j++){
+ if( c=='M' ){ szHeap *= 1000000; break; }
+ if( c=='K' ){ szHeap *= 1000; break; }
+ if( c=='G' ){ szHeap *= 1000000000; break; }
+ }
+ if( szHeap>0x7fff0000 ) szHeap = 0x7fff0000;
+ sqlite3_config(SQLITE_CONFIG_HEAP, malloc((int)szHeap), (int)szHeap, 64);
+#endif
+#ifdef SQLITE_ENABLE_VFSTRACE
+ }else if( strcmp(argv[i],"-vfstrace")==0 ){
+ extern int vfstrace_register(
+ const char *zTraceName,
+ const char *zOldVfsName,
+ int (*xOut)(const char*,void*),
+ void *pOutArg,
+ int makeDefault
+ );
+ vfstrace_register("trace",0,(int(*)(const char*,void*))fputs,stderr,1);
+#endif
+#ifdef SQLITE_ENABLE_MULTIPLEX
+ }else if( strcmp(argv[i],"-multiplex")==0 ){
+ extern int sqlite3_multiple_initialize(const char*,int);
+ sqlite3_multiplex_initialize(0, 1);
+#endif
+ }else if( strcmp(argv[i],"-vfs")==0 ){
+ sqlite3_vfs *pVfs = sqlite3_vfs_find(argv[++i]);
+ if( pVfs ){
+ sqlite3_vfs_register(pVfs, 1);
+ }else{
+ fprintf(stderr, "no such VFS: \"%s\"\n", argv[i]);
+ exit(1);
+ }
}
}
if( i<argc ){
@@ -2656,12 +2903,24 @@
}else if( strcmp(z,"-bail")==0 ){
bail_on_error = 1;
}else if( strcmp(z,"-version")==0 ){
- printf("%s\n", sqlite3_libversion());
+ printf("%s %s\n", sqlite3_libversion(), sqlite3_sourceid());
return 0;
}else if( strcmp(z,"-interactive")==0 ){
stdin_is_interactive = 1;
}else if( strcmp(z,"-batch")==0 ){
stdin_is_interactive = 0;
+ }else if( strcmp(z,"-heap")==0 ){
+ i++;
+ }else if( strcmp(z,"-vfs")==0 ){
+ i++;
+#ifdef SQLITE_ENABLE_VFSTRACE
+ }else if( strcmp(z,"-vfstrace")==0 ){
+ i++;
+#endif
+#ifdef SQLITE_ENABLE_MULTIPLEX
+ }else if( strcmp(z,"-multiplex")==0 ){
+ i++;
+#endif
}else if( strcmp(z,"-help")==0 || strcmp(z, "--help")==0 ){
usage(1);
}else{
@@ -2695,10 +2954,10 @@
char *zHistory = 0;
int nHistory;
printf(
- "SQLite version %s\n"
+ "SQLite version %s %.19s\n" /*extra-version-info*/
"Enter \".help\" for instructions\n"
"Enter SQL statements terminated with a \";\"\n",
- sqlite3_libversion()
+ sqlite3_libversion(), sqlite3_sourceid()
);
zHome = find_home_dir();
if( zHome ){
@@ -2723,11 +2982,7 @@
}
set_table_name(&data, 0);
if( data.db ){
- if( sqlite3_close(data.db)!=SQLITE_OK ){
- fprintf(stderr,"Error: cannot close database \"%s\"\n",
- sqlite3_errmsg(db));
- rc++;
- }
+ sqlite3_close(data.db);
}
return rc;
}
diff --git a/dist/sqlite3.c b/dist/sqlite3.c
index 74e7ca2..7f46e6e 100644
--- a/dist/sqlite3.c
+++ b/dist/sqlite3.c
@@ -1,7 +1,7 @@
/******************************************************************************
** This file is an amalgamation of many separate C source files from SQLite
-** version 3.7.4. By combining all the individual C code files into this
-** single large file, the entire code can be compiled as a one translation
+** version 3.7.10. By combining all the individual C code files into this
+** single large file, the entire code can be compiled as a single translation
** unit. This allows many compilers to do optimizations that would not be
** possible if the files were compiled separately. Performance improvements
** of 5% or more are commonly seen when SQLite is compiled as a single
@@ -25,10 +25,6 @@
#ifndef SQLITE_API
# define SQLITE_API
#endif
-// Begin Android Add
-#define fdatasync fsync
-#undef __APPLE__
-// End Android Add
/************** Begin file sqliteInt.h ***************************************/
/*
** 2001 September 15
@@ -204,7 +200,7 @@
/*
** The maximum number of attached databases. This must be between 0
-** and 30. The upper bound on 30 is because a 32-bit integer bitmap
+** and 62. The upper bound on 62 is because a 64-bit integer bitmap
** is used internally to track attached databases.
*/
#ifndef SQLITE_MAX_ATTACHED
@@ -321,13 +317,6 @@
#endif
/*
-** The number of samples of an index that SQLite takes in order to
-** construct a histogram of the table content when running ANALYZE
-** and with SQLITE_ENABLE_STAT2
-*/
-#define SQLITE_INDEX_SAMPLES 10
-
-/*
** The following macros are used to cast pointers to integers and
** integers to pointers. The way you do this varies from one compiler
** to the next, so we have developed the following set of #if statements
@@ -377,6 +366,14 @@
#endif
/*
+** Powersafe overwrite is on by default. But can be turned off using
+** the -DSQLITE_POWERSAFE_OVERWRITE=0 command-line option.
+*/
+#ifndef SQLITE_POWERSAFE_OVERWRITE
+# define SQLITE_POWERSAFE_OVERWRITE 1
+#endif
+
+/*
** The SQLITE_DEFAULT_MEMSTATUS macro must be defined as either 0 or 1.
** It determines whether or not the features related to
** SQLITE_CONFIG_MEMSTATUS are available by default or not. This value can
@@ -391,19 +388,25 @@
** specify which memory allocation subsystem to use.
**
** SQLITE_SYSTEM_MALLOC // Use normal system malloc()
+** SQLITE_WIN32_MALLOC // Use Win32 native heap API
** SQLITE_MEMDEBUG // Debugging version of system malloc()
**
+** On Windows, if the SQLITE_WIN32_MALLOC_VALIDATE macro is defined and the
+** assert() macro is enabled, each call into the Win32 native heap subsystem
+** will cause HeapValidate to be called. If heap validation should fail, an
+** assertion will be triggered.
+**
** (Historical note: There used to be several other options, but we've
-** pared it down to just these two.)
+** pared it down to just these three.)
**
** If none of the above are defined, then set SQLITE_SYSTEM_MALLOC as
** the default.
*/
-#if defined(SQLITE_SYSTEM_MALLOC)+defined(SQLITE_MEMDEBUG)>1
+#if defined(SQLITE_SYSTEM_MALLOC)+defined(SQLITE_WIN32_MALLOC)+defined(SQLITE_MEMDEBUG)>1
# error "At most one of the following compile-time configuration options\
- is allows: SQLITE_SYSTEM_MALLOC, SQLITE_MEMDEBUG"
+ is allows: SQLITE_SYSTEM_MALLOC, SQLITE_WIN32_MALLOC, SQLITE_MEMDEBUG"
#endif
-#if defined(SQLITE_SYSTEM_MALLOC)+defined(SQLITE_MEMDEBUG)==0
+#if defined(SQLITE_SYSTEM_MALLOC)+defined(SQLITE_WIN32_MALLOC)+defined(SQLITE_MEMDEBUG)==0
# define SQLITE_SYSTEM_MALLOC 1
#endif
@@ -654,9 +657,9 @@
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
-#define SQLITE_VERSION "3.7.4"
-#define SQLITE_VERSION_NUMBER 3007004
-#define SQLITE_SOURCE_ID "2011-02-23 14:33:31 8609a15dfad23a7c5311b52617d5c4818c0b8d1e"
+#define SQLITE_VERSION "3.7.10"
+#define SQLITE_VERSION_NUMBER 3007010
+#define SQLITE_SOURCE_ID "2012-01-16 13:28:40 ebd01a8deffb5024a5d7494eef800d2366d97204"
/*
** CAPI3REF: Run-Time Library Version Numbers
@@ -724,7 +727,7 @@
** CAPI3REF: Test To See If The Library Is Threadsafe
**
** ^The sqlite3_threadsafe() function returns zero if and only if
-** SQLite was compiled mutexing code omitted due to the
+** SQLite was compiled with mutexing code omitted due to the
** [SQLITE_THREADSAFE] compile-time option being set to 0.
**
** SQLite can be compiled with or without mutexes. When
@@ -857,7 +860,7 @@
** argument. ^If the callback function of the 3rd argument to
** sqlite3_exec() is not NULL, then it is invoked for each result row
** coming out of the evaluated SQL statements. ^The 4th argument to
-** to sqlite3_exec() is relayed through to the 1st argument of each
+** sqlite3_exec() is relayed through to the 1st argument of each
** callback invocation. ^If the callback pointer to sqlite3_exec()
** is NULL, then no callback is ever invoked and result rows are
** ignored.
@@ -918,11 +921,12 @@
** KEYWORDS: {result code} {result codes}
**
** Many SQLite functions return an integer result code from the set shown
-** here in order to indicates success or failure.
+** here in order to indicate success or failure.
**
** New error codes may be added in future versions of SQLite.
**
-** See also: [SQLITE_IOERR_READ | extended result codes]
+** See also: [SQLITE_IOERR_READ | extended result codes],
+** [sqlite3_vtab_on_conflict()] [SQLITE_ROLLBACK | result codes].
*/
#define SQLITE_OK 0 /* Successful result */
/* beginning-of-error-codes */
@@ -937,7 +941,7 @@
#define SQLITE_INTERRUPT 9 /* Operation terminated by sqlite3_interrupt()*/
#define SQLITE_IOERR 10 /* Some kind of disk I/O error occurred */
#define SQLITE_CORRUPT 11 /* The database disk image is malformed */
-#define SQLITE_NOTFOUND 12 /* NOT USED. Table or record not found */
+#define SQLITE_NOTFOUND 12 /* Unknown opcode in sqlite3_file_control() */
#define SQLITE_FULL 13 /* Insertion failed because database is full */
#define SQLITE_CANTOPEN 14 /* Unable to open the database file */
#define SQLITE_PROTOCOL 15 /* Database lock protocol error */
@@ -952,9 +956,6 @@
#define SQLITE_FORMAT 24 /* Auxiliary database format error */
#define SQLITE_RANGE 25 /* 2nd parameter to sqlite3_bind out of range */
#define SQLITE_NOTADB 26 /* File opened that is not a database file */
-// Begin Android Add
-#define SQLITE_UNCLOSED 27 /* db can't be closed due unfinalized stmts */
-// End Android Add
#define SQLITE_ROW 100 /* sqlite3_step() has another row ready */
#define SQLITE_DONE 101 /* sqlite3_step() has finished executing */
/* end-of-error-codes */
@@ -1002,17 +1003,21 @@
#define SQLITE_IOERR_SHMOPEN (SQLITE_IOERR | (18<<8))
#define SQLITE_IOERR_SHMSIZE (SQLITE_IOERR | (19<<8))
#define SQLITE_IOERR_SHMLOCK (SQLITE_IOERR | (20<<8))
+#define SQLITE_IOERR_SHMMAP (SQLITE_IOERR | (21<<8))
+#define SQLITE_IOERR_SEEK (SQLITE_IOERR | (22<<8))
#define SQLITE_LOCKED_SHAREDCACHE (SQLITE_LOCKED | (1<<8))
#define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8))
#define SQLITE_CANTOPEN_NOTEMPDIR (SQLITE_CANTOPEN | (1<<8))
+#define SQLITE_CORRUPT_VTAB (SQLITE_CORRUPT | (1<<8))
+#define SQLITE_READONLY_RECOVERY (SQLITE_READONLY | (1<<8))
+#define SQLITE_READONLY_CANTLOCK (SQLITE_READONLY | (2<<8))
/*
** CAPI3REF: Flags For File Open Operations
**
** These bit values are intended for use in the
** 3rd parameter to the [sqlite3_open_v2()] interface and
-** in the 4th parameter to the xOpen method of the
-** [sqlite3_vfs] object.
+** in the 4th parameter to the [sqlite3_vfs.xOpen] method.
*/
#define SQLITE_OPEN_READONLY 0x00000001 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_READWRITE 0x00000002 /* Ok for sqlite3_open_v2() */
@@ -1020,6 +1025,7 @@
#define SQLITE_OPEN_DELETEONCLOSE 0x00000008 /* VFS only */
#define SQLITE_OPEN_EXCLUSIVE 0x00000010 /* VFS only */
#define SQLITE_OPEN_AUTOPROXY 0x00000020 /* VFS only */
+#define SQLITE_OPEN_URI 0x00000040 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_MAIN_DB 0x00000100 /* VFS only */
#define SQLITE_OPEN_TEMP_DB 0x00000200 /* VFS only */
#define SQLITE_OPEN_TRANSIENT_DB 0x00000400 /* VFS only */
@@ -1033,6 +1039,8 @@
#define SQLITE_OPEN_PRIVATECACHE 0x00040000 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_WAL 0x00080000 /* VFS only */
+/* Reserved: 0x00F00000 */
+
/*
** CAPI3REF: Device Characteristics
**
@@ -1051,7 +1059,11 @@
** first then the size of the file is extended, never the other
** way around. The SQLITE_IOCAP_SEQUENTIAL property means that
** information is written to disk in the same order as calls
-** to xWrite().
+** to xWrite(). The SQLITE_IOCAP_POWERSAFE_OVERWRITE property means that
+** after reboot following a crash or power loss, the only bytes in a
+** file that were written at the application level might have changed
+** and that adjacent bytes, even bytes within the same sector are
+** guaranteed to be unchanged.
*/
#define SQLITE_IOCAP_ATOMIC 0x00000001
#define SQLITE_IOCAP_ATOMIC512 0x00000002
@@ -1065,6 +1077,7 @@
#define SQLITE_IOCAP_SAFE_APPEND 0x00000200
#define SQLITE_IOCAP_SEQUENTIAL 0x00000400
#define SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN 0x00000800
+#define SQLITE_IOCAP_POWERSAFE_OVERWRITE 0x00001000
/*
** CAPI3REF: File Locking Levels
@@ -1128,17 +1141,18 @@
/*
** CAPI3REF: OS Interface File Virtual Methods Object
**
-** Every file opened by the [sqlite3_vfs] xOpen method populates an
+** Every file opened by the [sqlite3_vfs.xOpen] method populates an
** [sqlite3_file] object (or, more commonly, a subclass of the
** [sqlite3_file] object) with a pointer to an instance of this object.
** This object defines the methods used to perform various operations
** against the open file represented by the [sqlite3_file] object.
**
-** If the xOpen method sets the sqlite3_file.pMethods element
+** If the [sqlite3_vfs.xOpen] method sets the sqlite3_file.pMethods element
** to a non-NULL pointer, then the sqlite3_io_methods.xClose method
-** may be invoked even if the xOpen reported that it failed. The
-** only way to prevent a call to xClose following a failed xOpen
-** is for the xOpen to set the sqlite3_file.pMethods element to NULL.
+** may be invoked even if the [sqlite3_vfs.xOpen] reported that it failed. The
+** only way to prevent a call to xClose following a failed [sqlite3_vfs.xOpen]
+** is for the [sqlite3_vfs.xOpen] to set the sqlite3_file.pMethods element
+** to NULL.
**
** The flags argument to xSync may be one of [SQLITE_SYNC_NORMAL] or
** [SQLITE_SYNC_FULL]. The first choice is the normal fsync().
@@ -1172,7 +1186,9 @@
** core reserves all opcodes less than 100 for its own use.
** A [SQLITE_FCNTL_LOCKSTATE | list of opcodes] less than 100 is available.
** Applications that define a custom xFileControl method should use opcodes
-** greater than 100 to avoid conflicts.
+** greater than 100 to avoid conflicts. VFS implementations should
+** return [SQLITE_NOTFOUND] for file control opcodes that they do not
+** recognize.
**
** The xSectorSize() method returns the sector size of the
** device that underlies the file. The sector size is the
@@ -1265,15 +1281,90 @@
** for the nominated database. Allocating database file space in large
** chunks (say 1MB at a time), may reduce file-system fragmentation and
** improve performance on some systems.
+**
+** The [SQLITE_FCNTL_FILE_POINTER] opcode is used to obtain a pointer
+** to the [sqlite3_file] object associated with a particular database
+** connection. See the [sqlite3_file_control()] documentation for
+** additional information.
+**
+** ^(The [SQLITE_FCNTL_SYNC_OMITTED] opcode is generated internally by
+** SQLite and sent to all VFSes in place of a call to the xSync method
+** when the database connection has [PRAGMA synchronous] set to OFF.)^
+** Some specialized VFSes need this signal in order to operate correctly
+** when [PRAGMA synchronous | PRAGMA synchronous=OFF] is set, but most
+** VFSes do not need this signal and should silently ignore this opcode.
+** Applications should not call [sqlite3_file_control()] with this
+** opcode as doing so may disrupt the operation of the specialized VFSes
+** that do require it.
+**
+** ^The [SQLITE_FCNTL_WIN32_AV_RETRY] opcode is used to configure automatic
+** retry counts and intervals for certain disk I/O operations for the
+** windows [VFS] in order to provide robustness in the presence of
+** anti-virus programs. By default, the windows VFS will retry file read,
+** file write, and file delete operations up to 10 times, with a delay
+** of 25 milliseconds before the first retry and with the delay increasing
+** by an additional 25 milliseconds with each subsequent retry. This
+** opcode allows these two values (10 retries and 25 milliseconds of delay)
+** to be adjusted. The values are changed for all database connections
+** within the same process. The argument is a pointer to an array of two
+** integers where the first integer i the new retry count and the second
+** integer is the delay. If either integer is negative, then the setting
+** is not changed but instead the prior value of that setting is written
+** into the array entry, allowing the current retry settings to be
+** interrogated. The zDbName parameter is ignored.
+**
+** ^The [SQLITE_FCNTL_PERSIST_WAL] opcode is used to set or query the
+** persistent [WAL | Write AHead Log] setting. By default, the auxiliary
+** write ahead log and shared memory files used for transaction control
+** are automatically deleted when the latest connection to the database
+** closes. Setting persistent WAL mode causes those files to persist after
+** close. Persisting the files is useful when other processes that do not
+** have write permission on the directory containing the database file want
+** to read the database file, as the WAL and shared memory files must exist
+** in order for the database to be readable. The fourth parameter to
+** [sqlite3_file_control()] for this opcode should be a pointer to an integer.
+** That integer is 0 to disable persistent WAL mode or 1 to enable persistent
+** WAL mode. If the integer is -1, then it is overwritten with the current
+** WAL persistence setting.
+**
+** ^The [SQLITE_FCNTL_POWERSAFE_OVERWRITE] opcode is used to set or query the
+** persistent "powersafe-overwrite" or "PSOW" setting. The PSOW setting
+** determines the [SQLITE_IOCAP_POWERSAFE_OVERWRITE] bit of the
+** xDeviceCharacteristics methods. The fourth parameter to
+** [sqlite3_file_control()] for this opcode should be a pointer to an integer.
+** That integer is 0 to disable zero-damage mode or 1 to enable zero-damage
+** mode. If the integer is -1, then it is overwritten with the current
+** zero-damage mode setting.
+**
+** ^The [SQLITE_FCNTL_OVERWRITE] opcode is invoked by SQLite after opening
+** a write transaction to indicate that, unless it is rolled back for some
+** reason, the entire database file will be overwritten by the current
+** transaction. This is used by VACUUM operations.
+**
+** ^The [SQLITE_FCNTL_VFSNAME] opcode can be used to obtain the names of
+** all [VFSes] in the VFS stack. The names are of all VFS shims and the
+** final bottom-level VFS are written into memory obtained from
+** [sqlite3_malloc()] and the result is stored in the char* variable
+** that the fourth parameter of [sqlite3_file_control()] points to.
+** The caller is responsible for freeing the memory when done. As with
+** all file-control actions, there is no guarantee that this will actually
+** do anything. Callers should initialize the char* variable to a NULL
+** pointer in case this file-control is not implemented. This file-control
+** is intended for diagnostic use only.
*/
-#define SQLITE_FCNTL_LOCKSTATE 1
-#define SQLITE_GET_LOCKPROXYFILE 2
-#define SQLITE_SET_LOCKPROXYFILE 3
-#define SQLITE_LAST_ERRNO 4
-#define SQLITE_FCNTL_SIZE_HINT 5
-#define SQLITE_FCNTL_CHUNK_SIZE 6
-#define SQLITE_FCNTL_FILE_POINTER 7
-
+#define SQLITE_FCNTL_LOCKSTATE 1
+#define SQLITE_GET_LOCKPROXYFILE 2
+#define SQLITE_SET_LOCKPROXYFILE 3
+#define SQLITE_LAST_ERRNO 4
+#define SQLITE_FCNTL_SIZE_HINT 5
+#define SQLITE_FCNTL_CHUNK_SIZE 6
+#define SQLITE_FCNTL_FILE_POINTER 7
+#define SQLITE_FCNTL_SYNC_OMITTED 8
+#define SQLITE_FCNTL_WIN32_AV_RETRY 9
+#define SQLITE_FCNTL_PERSIST_WAL 10
+#define SQLITE_FCNTL_OVERWRITE 11
+#define SQLITE_FCNTL_VFSNAME 12
+#define SQLITE_FCNTL_POWERSAFE_OVERWRITE 13
/*
** CAPI3REF: Mutex Handle
@@ -1292,7 +1383,8 @@
**
** An instance of the sqlite3_vfs object defines the interface between
** the SQLite core and the underlying operating system. The "vfs"
-** in the name of the object stands for "virtual file system".
+** in the name of the object stands for "virtual file system". See
+** the [VFS | VFS documentation] for further information.
**
** The value of the iVersion field is initially 1 but may be larger in
** future versions of SQLite. Additional fields may be appended to this
@@ -1321,12 +1413,13 @@
** The zName field holds the name of the VFS module. The name must
** be unique across all VFS modules.
**
+** [[sqlite3_vfs.xOpen]]
** ^SQLite guarantees that the zFilename parameter to xOpen
** is either a NULL pointer or string obtained
** from xFullPathname() with an optional suffix added.
** ^If a suffix is added to the zFilename parameter, it will
** consist of a single "-" character followed by no more than
-** 10 alphanumeric and/or "-" characters.
+** 11 alphanumeric and/or "-" characters.
** ^SQLite further guarantees that
** the string will be valid and unchanged until xClose() is
** called. Because of the previous sentence,
@@ -1398,6 +1491,7 @@
** element will be valid after xOpen returns regardless of the success
** or failure of the xOpen call.
**
+** [[sqlite3_vfs.xAccess]]
** ^The flags argument to xAccess() may be [SQLITE_ACCESS_EXISTS]
** to test for the existence of a file, or [SQLITE_ACCESS_READWRITE] to
** test whether a file is readable and writable, or [SQLITE_ACCESS_READ]
@@ -1422,16 +1516,29 @@
** method returns a Julian Day Number for the current date and time as
** a floating point value.
** ^The xCurrentTimeInt64() method returns, as an integer, the Julian
-** Day Number multipled by 86400000 (the number of milliseconds in
+** Day Number multiplied by 86400000 (the number of milliseconds in
** a 24-hour day).
** ^SQLite will use the xCurrentTimeInt64() method to get the current
** date and time if that method is available (if iVersion is 2 or
** greater and the function pointer is not NULL) and will fall back
** to xCurrentTime() if xCurrentTimeInt64() is unavailable.
+**
+** ^The xSetSystemCall(), xGetSystemCall(), and xNestSystemCall() interfaces
+** are not used by the SQLite core. These optional interfaces are provided
+** by some VFSes to facilitate testing of the VFS code. By overriding
+** system calls with functions under its control, a test program can
+** simulate faults and error conditions that would otherwise be difficult
+** or impossible to induce. The set of system calls that can be overridden
+** varies from one VFS to another, and from one version of the same VFS to the
+** next. Applications that use these interfaces must be prepared for any
+** or all of these interfaces to be NULL or for their behavior to change
+** from one release to the next. Applications must not attempt to access
+** any of these methods if the iVersion of the VFS is less than 3.
*/
typedef struct sqlite3_vfs sqlite3_vfs;
+typedef void (*sqlite3_syscall_ptr)(void);
struct sqlite3_vfs {
- int iVersion; /* Structure version number (currently 2) */
+ int iVersion; /* Structure version number (currently 3) */
int szOsFile; /* Size of subclassed sqlite3_file */
int mxPathname; /* Maximum file pathname length */
sqlite3_vfs *pNext; /* Next registered VFS */
@@ -1457,6 +1564,13 @@
int (*xCurrentTimeInt64)(sqlite3_vfs*, sqlite3_int64*);
/*
** The methods above are in versions 1 and 2 of the sqlite_vfs object.
+ ** Those below are for version 3 and greater.
+ */
+ int (*xSetSystemCall)(sqlite3_vfs*, const char *zName, sqlite3_syscall_ptr);
+ sqlite3_syscall_ptr (*xGetSystemCall)(sqlite3_vfs*, const char *zName);
+ const char *(*xNextSystemCall)(sqlite3_vfs*, const char *zName);
+ /*
+ ** The methods above are in versions 1 through 3 of the sqlite_vfs object.
** New fields may be appended in figure versions. The iVersion
** value will increment whenever this happens.
*/
@@ -1624,9 +1738,9 @@
** implementation of an application-defined [sqlite3_os_init()].
**
** The first argument to sqlite3_config() is an integer
-** [SQLITE_CONFIG_SINGLETHREAD | configuration option] that determines
+** [configuration option] that determines
** what property of SQLite is to be configured. Subsequent arguments
-** vary depending on the [SQLITE_CONFIG_SINGLETHREAD | configuration option]
+** vary depending on the [configuration option]
** in the first argument.
**
** ^When a configuration option is set, sqlite3_config() returns [SQLITE_OK].
@@ -1641,17 +1755,12 @@
** The sqlite3_db_config() interface is used to make configuration
** changes to a [database connection]. The interface is similar to
** [sqlite3_config()] except that the changes apply to a single
-** [database connection] (specified in the first argument). The
-** sqlite3_db_config() interface should only be used immediately after
-** the database connection is created using [sqlite3_open()],
-** [sqlite3_open16()], or [sqlite3_open_v2()].
+** [database connection] (specified in the first argument).
**
** The second argument to sqlite3_db_config(D,V,...) is the
-** configuration verb - an integer code that indicates what
-** aspect of the [database connection] is being configured.
-** The only choice for this value is [SQLITE_DBCONFIG_LOOKASIDE].
-** New verbs are likely to be added in future releases of SQLite.
-** Additional arguments depend on the verb.
+** [SQLITE_DBCONFIG_LOOKASIDE | configuration verb] - an integer code
+** that indicates what aspect of the [database connection] is being configured.
+** Subsequent arguments vary depending on the configuration verb.
**
** ^Calls to sqlite3_db_config() return SQLITE_OK if and only if
** the call is considered successful.
@@ -1683,16 +1792,10 @@
** order to verify that SQLite recovers gracefully from such
** conditions.
**
-** The xMalloc and xFree methods must work like the
-** malloc() and free() functions from the standard C library.
-** The xRealloc method must work like realloc() from the standard C library
-** with the exception that if the second argument to xRealloc is zero,
-** xRealloc must be a no-op - it must not perform any allocation or
-** deallocation. ^SQLite guarantees that the second argument to
+** The xMalloc, xRealloc, and xFree methods must work like the
+** malloc(), realloc() and free() functions from the standard C library.
+** ^SQLite guarantees that the second argument to
** xRealloc is always a value returned by a prior call to xRoundup.
-** And so in cases where xRoundup always returns a positive number,
-** xRealloc can perform exactly as the standard library realloc() and
-** still be in compliance with this specification.
**
** xSize should return the allocated size of a memory allocation
** previously obtained from xMalloc or xRealloc. The allocated size
@@ -1741,6 +1844,7 @@
/*
** CAPI3REF: Configuration Options
+** KEYWORDS: {configuration option}
**
** These constants are the available integer configuration options that
** can be passed as the first argument to the [sqlite3_config()] interface.
@@ -1753,7 +1857,7 @@
** is invoked.
**
** <dl>
-** <dt>SQLITE_CONFIG_SINGLETHREAD</dt>
+** [[SQLITE_CONFIG_SINGLETHREAD]] <dt>SQLITE_CONFIG_SINGLETHREAD</dt>
** <dd>There are no arguments to this option. ^This option sets the
** [threading mode] to Single-thread. In other words, it disables
** all mutexing and puts SQLite into a mode where it can only be used
@@ -1764,7 +1868,7 @@
** [SQLITE_ERROR] if called with the SQLITE_CONFIG_SINGLETHREAD
** configuration option.</dd>
**
-** <dt>SQLITE_CONFIG_MULTITHREAD</dt>
+** [[SQLITE_CONFIG_MULTITHREAD]] <dt>SQLITE_CONFIG_MULTITHREAD</dt>
** <dd>There are no arguments to this option. ^This option sets the
** [threading mode] to Multi-thread. In other words, it disables
** mutexing on [database connection] and [prepared statement] objects.
@@ -1778,7 +1882,7 @@
** [sqlite3_config()] will return [SQLITE_ERROR] if called with the
** SQLITE_CONFIG_MULTITHREAD configuration option.</dd>
**
-** <dt>SQLITE_CONFIG_SERIALIZED</dt>
+** [[SQLITE_CONFIG_SERIALIZED]] <dt>SQLITE_CONFIG_SERIALIZED</dt>
** <dd>There are no arguments to this option. ^This option sets the
** [threading mode] to Serialized. In other words, this option enables
** all mutexes including the recursive
@@ -1794,7 +1898,7 @@
** [sqlite3_config()] will return [SQLITE_ERROR] if called with the
** SQLITE_CONFIG_SERIALIZED configuration option.</dd>
**
-** <dt>SQLITE_CONFIG_MALLOC</dt>
+** [[SQLITE_CONFIG_MALLOC]] <dt>SQLITE_CONFIG_MALLOC</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mem_methods] structure. The argument specifies
** alternative low-level memory allocation routines to be used in place of
@@ -1802,7 +1906,7 @@
** its own private copy of the content of the [sqlite3_mem_methods] structure
** before the [sqlite3_config()] call returns.</dd>
**
-** <dt>SQLITE_CONFIG_GETMALLOC</dt>
+** [[SQLITE_CONFIG_GETMALLOC]] <dt>SQLITE_CONFIG_GETMALLOC</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mem_methods] structure. The [sqlite3_mem_methods]
** structure is filled with the currently defined memory allocation routines.)^
@@ -1810,7 +1914,7 @@
** routines with a wrapper that simulations memory allocation failure or
** tracks memory usage, for example. </dd>
**
-** <dt>SQLITE_CONFIG_MEMSTATUS</dt>
+** [[SQLITE_CONFIG_MEMSTATUS]] <dt>SQLITE_CONFIG_MEMSTATUS</dt>
** <dd> ^This option takes single argument of type int, interpreted as a
** boolean, which enables or disables the collection of memory allocation
** statistics. ^(When memory allocation statistics are disabled, the
@@ -1826,10 +1930,10 @@
** allocation statistics are disabled by default.
** </dd>
**
-** <dt>SQLITE_CONFIG_SCRATCH</dt>
+** [[SQLITE_CONFIG_SCRATCH]] <dt>SQLITE_CONFIG_SCRATCH</dt>
** <dd> ^This option specifies a static memory buffer that SQLite can use for
** scratch memory. There are three arguments: A pointer an 8-byte
-** aligned memory buffer from which the scrach allocations will be
+** aligned memory buffer from which the scratch allocations will be
** drawn, the size of each scratch allocation (sz),
** and the maximum number of scratch allocations (N). The sz
** argument must be a multiple of 16.
@@ -1842,11 +1946,11 @@
** scratch memory beyond what is provided by this configuration option, then
** [sqlite3_malloc()] will be used to obtain the memory needed.</dd>
**
-** <dt>SQLITE_CONFIG_PAGECACHE</dt>
+** [[SQLITE_CONFIG_PAGECACHE]] <dt>SQLITE_CONFIG_PAGECACHE</dt>
** <dd> ^This option specifies a static memory buffer that SQLite can use for
-** the database page cache with the default page cache implemenation.
+** the database page cache with the default page cache implementation.
** This configuration should not be used if an application-define page
-** cache implementation is loaded using the SQLITE_CONFIG_PCACHE option.
+** cache implementation is loaded using the SQLITE_CONFIG_PCACHE2 option.
** There are three arguments to this option: A pointer to 8-byte aligned
** memory, the size of each page buffer (sz), and the number of pages (N).
** The sz argument should be the size of the largest database page
@@ -1863,7 +1967,7 @@
** be aligned to an 8-byte boundary or subsequent behavior of SQLite
** will be undefined.</dd>
**
-** <dt>SQLITE_CONFIG_HEAP</dt>
+** [[SQLITE_CONFIG_HEAP]] <dt>SQLITE_CONFIG_HEAP</dt>
** <dd> ^This option specifies a static memory buffer that SQLite will use
** for all of its dynamic memory allocation needs beyond those provided
** for by [SQLITE_CONFIG_SCRATCH] and [SQLITE_CONFIG_PAGECACHE].
@@ -1876,9 +1980,11 @@
** [SQLITE_ENABLE_MEMSYS5] are defined, then the alternative memory
** allocator is engaged to handle all of SQLites memory allocation needs.
** The first pointer (the memory pointer) must be aligned to an 8-byte
-** boundary or subsequent behavior of SQLite will be undefined.</dd>
+** boundary or subsequent behavior of SQLite will be undefined.
+** The minimum allocation size is capped at 2**12. Reasonable values
+** for the minimum allocation size are 2**5 through 2**8.</dd>
**
-** <dt>SQLITE_CONFIG_MUTEX</dt>
+** [[SQLITE_CONFIG_MUTEX]] <dt>SQLITE_CONFIG_MUTEX</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mutex_methods] structure. The argument specifies
** alternative low-level mutex routines to be used in place
@@ -1890,7 +1996,7 @@
** [sqlite3_config()] with the SQLITE_CONFIG_MUTEX configuration option will
** return [SQLITE_ERROR].</dd>
**
-** <dt>SQLITE_CONFIG_GETMUTEX</dt>
+** [[SQLITE_CONFIG_GETMUTEX]] <dt>SQLITE_CONFIG_GETMUTEX</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mutex_methods] structure. The
** [sqlite3_mutex_methods]
@@ -1903,7 +2009,7 @@
** [sqlite3_config()] with the SQLITE_CONFIG_GETMUTEX configuration option will
** return [SQLITE_ERROR].</dd>
**
-** <dt>SQLITE_CONFIG_LOOKASIDE</dt>
+** [[SQLITE_CONFIG_LOOKASIDE]] <dt>SQLITE_CONFIG_LOOKASIDE</dt>
** <dd> ^(This option takes two arguments that determine the default
** memory allocation for the lookaside memory allocator on each
** [database connection]. The first argument is the
@@ -1913,18 +2019,18 @@
** verb to [sqlite3_db_config()] can be used to change the lookaside
** configuration on individual connections.)^ </dd>
**
-** <dt>SQLITE_CONFIG_PCACHE</dt>
+** [[SQLITE_CONFIG_PCACHE2]] <dt>SQLITE_CONFIG_PCACHE2</dt>
** <dd> ^(This option takes a single argument which is a pointer to
-** an [sqlite3_pcache_methods] object. This object specifies the interface
+** an [sqlite3_pcache_methods2] object. This object specifies the interface
** to a custom page cache implementation.)^ ^SQLite makes a copy of the
** object and uses it for page cache memory allocations.</dd>
**
-** <dt>SQLITE_CONFIG_GETPCACHE</dt>
+** [[SQLITE_CONFIG_GETPCACHE2]] <dt>SQLITE_CONFIG_GETPCACHE2</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
-** [sqlite3_pcache_methods] object. SQLite copies of the current
+** [sqlite3_pcache_methods2] object. SQLite copies of the current
** page cache implementation into that object.)^ </dd>
**
-** <dt>SQLITE_CONFIG_LOG</dt>
+** [[SQLITE_CONFIG_LOG]] <dt>SQLITE_CONFIG_LOG</dt>
** <dd> ^The SQLITE_CONFIG_LOG option takes two arguments: a pointer to a
** function with a call signature of void(*)(void*,int,const char*),
** and a pointer to void. ^If the function pointer is not NULL, it is
@@ -1942,6 +2048,23 @@
** In a multi-threaded application, the application-defined logger
** function must be threadsafe. </dd>
**
+** [[SQLITE_CONFIG_URI]] <dt>SQLITE_CONFIG_URI
+** <dd> This option takes a single argument of type int. If non-zero, then
+** URI handling is globally enabled. If the parameter is zero, then URI handling
+** is globally disabled. If URI handling is globally enabled, all filenames
+** passed to [sqlite3_open()], [sqlite3_open_v2()], [sqlite3_open16()] or
+** specified as part of [ATTACH] commands are interpreted as URIs, regardless
+** of whether or not the [SQLITE_OPEN_URI] flag is set when the database
+** connection is opened. If it is globally disabled, filenames are
+** only interpreted as URIs if the SQLITE_OPEN_URI flag is set when the
+** database connection is opened. By default, URI handling is globally
+** disabled. The default value may be changed by compiling with the
+** [SQLITE_USE_URI] symbol defined.
+**
+** [[SQLITE_CONFIG_PCACHE]] [[SQLITE_CONFIG_GETPCACHE]]
+** <dt>SQLITE_CONFIG_PCACHE and SQLITE_CONFNIG_GETPCACHE
+** <dd> These options are obsolete and should not be used by new code.
+** They are retained for backwards compatibility but are now no-ops.
** </dl>
*/
#define SQLITE_CONFIG_SINGLETHREAD 1 /* nil */
@@ -1957,9 +2080,12 @@
#define SQLITE_CONFIG_GETMUTEX 11 /* sqlite3_mutex_methods* */
/* previously SQLITE_CONFIG_CHUNKALLOC 12 which is now unused. */
#define SQLITE_CONFIG_LOOKASIDE 13 /* int int */
-#define SQLITE_CONFIG_PCACHE 14 /* sqlite3_pcache_methods* */
-#define SQLITE_CONFIG_GETPCACHE 15 /* sqlite3_pcache_methods* */
+#define SQLITE_CONFIG_PCACHE 14 /* no-op */
+#define SQLITE_CONFIG_GETPCACHE 15 /* no-op */
#define SQLITE_CONFIG_LOG 16 /* xFunc, void* */
+#define SQLITE_CONFIG_URI 17 /* int */
+#define SQLITE_CONFIG_PCACHE2 18 /* sqlite3_pcache_methods2* */
+#define SQLITE_CONFIG_GETPCACHE2 19 /* sqlite3_pcache_methods2* */
/*
** CAPI3REF: Database Connection Configuration Options
@@ -1979,7 +2105,7 @@
** <dd> ^This option takes three additional arguments that determine the
** [lookaside memory allocator] configuration for the [database connection].
** ^The first argument (the third parameter to [sqlite3_db_config()] is a
-** pointer to an memory buffer to use for lookaside memory.
+** pointer to a memory buffer to use for lookaside memory.
** ^The first argument after the SQLITE_DBCONFIG_LOOKASIDE verb
** may be NULL in which case SQLite will allocate the
** lookaside buffer itself using [sqlite3_malloc()]. ^The second argument is the
@@ -1997,9 +2123,31 @@
** memory is in use leaves the configuration unchanged and returns
** [SQLITE_BUSY].)^</dd>
**
+** <dt>SQLITE_DBCONFIG_ENABLE_FKEY</dt>
+** <dd> ^This option is used to enable or disable the enforcement of
+** [foreign key constraints]. There should be two additional arguments.
+** The first argument is an integer which is 0 to disable FK enforcement,
+** positive to enable FK enforcement or negative to leave FK enforcement
+** unchanged. The second parameter is a pointer to an integer into which
+** is written 0 or 1 to indicate whether FK enforcement is off or on
+** following this call. The second parameter may be a NULL pointer, in
+** which case the FK enforcement setting is not reported back. </dd>
+**
+** <dt>SQLITE_DBCONFIG_ENABLE_TRIGGER</dt>
+** <dd> ^This option is used to enable or disable [CREATE TRIGGER | triggers].
+** There should be two additional arguments.
+** The first argument is an integer which is 0 to disable triggers,
+** positive to enable triggers or negative to leave the setting unchanged.
+** The second parameter is a pointer to an integer into which
+** is written 0 or 1 to indicate whether triggers are disabled or enabled
+** following this call. The second parameter may be a NULL pointer, in
+** which case the trigger setting is not reported back. </dd>
+**
** </dl>
*/
-#define SQLITE_DBCONFIG_LOOKASIDE 1001 /* void* int int */
+#define SQLITE_DBCONFIG_LOOKASIDE 1001 /* void* int int */
+#define SQLITE_DBCONFIG_ENABLE_FKEY 1002 /* int int* */
+#define SQLITE_DBCONFIG_ENABLE_TRIGGER 1003 /* int int* */
/*
@@ -2023,13 +2171,17 @@
**
** ^This routine returns the [rowid] of the most recent
** successful [INSERT] into the database from the [database connection]
-** in the first argument. ^If no successful [INSERT]s
+** in the first argument. ^As of SQLite version 3.7.7, this routines
+** records the last insert rowid of both ordinary tables and [virtual tables].
+** ^If no successful [INSERT]s
** have ever occurred on that database connection, zero is returned.
**
-** ^(If an [INSERT] occurs within a trigger, then the [rowid] of the inserted
-** row is returned by this routine as long as the trigger is running.
-** But once the trigger terminates, the value returned by this routine
-** reverts to the last value inserted before the trigger fired.)^
+** ^(If an [INSERT] occurs within a trigger or within a [virtual table]
+** method, then this routine will return the [rowid] of the inserted
+** row as long as the trigger or virtual table method is running.
+** But once the trigger or virtual table method ends, the value returned
+** by this routine reverts to what it was before the trigger or virtual
+** table method began.)^
**
** ^An [INSERT] that fails due to a constraint violation is not a
** successful [INSERT] and does not change the value returned by this
@@ -2392,7 +2544,7 @@
** NULL pointer if [sqlite3_malloc()] is unable to allocate enough
** memory to hold the resulting string.
**
-** ^(In sqlite3_snprintf() routine is similar to "snprintf()" from
+** ^(The sqlite3_snprintf() routine is similar to "snprintf()" from
** the standard C library. The result is written into the
** buffer supplied as the second parameter whose size is given by
** the first parameter. Note that the order of the
@@ -2411,12 +2563,14 @@
** the zero terminator. So the longest string that can be completely
** written will be n-1 characters.
**
+** ^The sqlite3_vsnprintf() routine is a varargs version of sqlite3_snprintf().
+**
** These routines all implement some additional formatting
** options that are useful for constructing SQL statements.
** All of the usual printf() formatting options apply. In addition, there
** is are "%q", "%Q", and "%z" options.
**
-** ^(The %q option works like %s in that it substitutes a null-terminated
+** ^(The %q option works like %s in that it substitutes a nul-terminated
** string from the argument list. But %q also doubles every '\'' character.
** %q is designed for use inside a string literal.)^ By doubling each '\''
** character it escapes that character and allows it to be inserted into
@@ -2474,6 +2628,7 @@
SQLITE_API char *sqlite3_mprintf(const char*,...);
SQLITE_API char *sqlite3_vmprintf(const char*, va_list);
SQLITE_API char *sqlite3_snprintf(int,char*,const char*, ...);
+SQLITE_API char *sqlite3_vsnprintf(int,char*,const char*, va_list);
/*
** CAPI3REF: Memory Allocation Subsystem
@@ -2598,7 +2753,7 @@
/*
** CAPI3REF: Compile-Time Authorization Callbacks
**
-** ^This routine registers a authorizer callback with a particular
+** ^This routine registers an authorizer callback with a particular
** [database connection], supplied in the first argument.
** ^The authorizer callback is invoked as SQL statements are being compiled
** by [sqlite3_prepare()] or its variants [sqlite3_prepare_v2()],
@@ -2689,6 +2844,9 @@
** to signal SQLite whether or not the action is permitted. See the
** [sqlite3_set_authorizer | authorizer documentation] for additional
** information.
+**
+** Note that SQLITE_IGNORE is also used as a [SQLITE_ROLLBACK | return code]
+** from the [sqlite3_vtab_on_conflict()] interface.
*/
#define SQLITE_DENY 1 /* Abort the SQL statement with an error */
#define SQLITE_IGNORE 2 /* Don't allow access, but don't generate an error */
@@ -2811,7 +2969,7 @@
/*
** CAPI3REF: Opening A New Database Connection
**
-** ^These routines open an SQLite database file whose name is given by the
+** ^These routines open an SQLite database file as specified by the
** filename argument. ^The filename argument is interpreted as UTF-8 for
** sqlite3_open() and sqlite3_open_v2() and as UTF-16 in the native byte
** order for sqlite3_open16(). ^(A [database connection] handle is usually
@@ -2838,7 +2996,7 @@
** sqlite3_open_v2() can take one of
** the following three values, optionally combined with the
** [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX], [SQLITE_OPEN_SHAREDCACHE],
-** and/or [SQLITE_OPEN_PRIVATECACHE] flags:)^
+** [SQLITE_OPEN_PRIVATECACHE], and/or [SQLITE_OPEN_URI] flags:)^
**
** <dl>
** ^(<dt>[SQLITE_OPEN_READONLY]</dt>
@@ -2851,15 +3009,14 @@
** case the database must already exist, otherwise an error is returned.</dd>)^
**
** ^(<dt>[SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]</dt>
-** <dd>The database is opened for reading and writing, and is creates it if
+** <dd>The database is opened for reading and writing, and is created if
** it does not already exist. This is the behavior that is always used for
** sqlite3_open() and sqlite3_open16().</dd>)^
** </dl>
**
** If the 3rd parameter to sqlite3_open_v2() is not one of the
-** combinations shown above or one of the combinations shown above combined
-** with the [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX],
-** [SQLITE_OPEN_SHAREDCACHE] and/or [SQLITE_OPEN_PRIVATECACHE] flags,
+** combinations shown above optionally combined with other
+** [SQLITE_OPEN_READONLY | SQLITE_OPEN_* bits]
** then the behavior is undefined.
**
** ^If the [SQLITE_OPEN_NOMUTEX] flag is set, then the database connection
@@ -2874,6 +3031,11 @@
** [SQLITE_OPEN_PRIVATECACHE] flag causes the database connection to not
** participate in [shared cache mode] even if it is enabled.
**
+** ^The fourth parameter to sqlite3_open_v2() is the name of the
+** [sqlite3_vfs] object that defines the operating system interface that
+** the new database connection should use. ^If the fourth parameter is
+** a NULL pointer then the default [sqlite3_vfs] object is used.
+**
** ^If the filename is ":memory:", then a private, temporary in-memory database
** is created for the connection. ^This in-memory database will vanish when
** the database connection is closed. Future versions of SQLite might
@@ -2886,10 +3048,111 @@
** on-disk database will be created. ^This private database will be
** automatically deleted as soon as the database connection is closed.
**
-** ^The fourth parameter to sqlite3_open_v2() is the name of the
-** [sqlite3_vfs] object that defines the operating system interface that
-** the new database connection should use. ^If the fourth parameter is
-** a NULL pointer then the default [sqlite3_vfs] object is used.
+** [[URI filenames in sqlite3_open()]] <h3>URI Filenames</h3>
+**
+** ^If [URI filename] interpretation is enabled, and the filename argument
+** begins with "file:", then the filename is interpreted as a URI. ^URI
+** filename interpretation is enabled if the [SQLITE_OPEN_URI] flag is
+** set in the fourth argument to sqlite3_open_v2(), or if it has
+** been enabled globally using the [SQLITE_CONFIG_URI] option with the
+** [sqlite3_config()] method or by the [SQLITE_USE_URI] compile-time option.
+** As of SQLite version 3.7.7, URI filename interpretation is turned off
+** by default, but future releases of SQLite might enable URI filename
+** interpretation by default. See "[URI filenames]" for additional
+** information.
+**
+** URI filenames are parsed according to RFC 3986. ^If the URI contains an
+** authority, then it must be either an empty string or the string
+** "localhost". ^If the authority is not an empty string or "localhost", an
+** error is returned to the caller. ^The fragment component of a URI, if
+** present, is ignored.
+**
+** ^SQLite uses the path component of the URI as the name of the disk file
+** which contains the database. ^If the path begins with a '/' character,
+** then it is interpreted as an absolute path. ^If the path does not begin
+** with a '/' (meaning that the authority section is omitted from the URI)
+** then the path is interpreted as a relative path.
+** ^On windows, the first component of an absolute path
+** is a drive specification (e.g. "C:").
+**
+** [[core URI query parameters]]
+** The query component of a URI may contain parameters that are interpreted
+** either by SQLite itself, or by a [VFS | custom VFS implementation].
+** SQLite interprets the following three query parameters:
+**
+** <ul>
+** <li> <b>vfs</b>: ^The "vfs" parameter may be used to specify the name of
+** a VFS object that provides the operating system interface that should
+** be used to access the database file on disk. ^If this option is set to
+** an empty string the default VFS object is used. ^Specifying an unknown
+** VFS is an error. ^If sqlite3_open_v2() is used and the vfs option is
+** present, then the VFS specified by the option takes precedence over
+** the value passed as the fourth parameter to sqlite3_open_v2().
+**
+** <li> <b>mode</b>: ^(The mode parameter may be set to either "ro", "rw" or
+** "rwc". Attempting to set it to any other value is an error)^.
+** ^If "ro" is specified, then the database is opened for read-only
+** access, just as if the [SQLITE_OPEN_READONLY] flag had been set in the
+** third argument to sqlite3_prepare_v2(). ^If the mode option is set to
+** "rw", then the database is opened for read-write (but not create)
+** access, as if SQLITE_OPEN_READWRITE (but not SQLITE_OPEN_CREATE) had
+** been set. ^Value "rwc" is equivalent to setting both
+** SQLITE_OPEN_READWRITE and SQLITE_OPEN_CREATE. ^If sqlite3_open_v2() is
+** used, it is an error to specify a value for the mode parameter that is
+** less restrictive than that specified by the flags passed as the third
+** parameter.
+**
+** <li> <b>cache</b>: ^The cache parameter may be set to either "shared" or
+** "private". ^Setting it to "shared" is equivalent to setting the
+** SQLITE_OPEN_SHAREDCACHE bit in the flags argument passed to
+** sqlite3_open_v2(). ^Setting the cache parameter to "private" is
+** equivalent to setting the SQLITE_OPEN_PRIVATECACHE bit.
+** ^If sqlite3_open_v2() is used and the "cache" parameter is present in
+** a URI filename, its value overrides any behaviour requested by setting
+** SQLITE_OPEN_PRIVATECACHE or SQLITE_OPEN_SHAREDCACHE flag.
+** </ul>
+**
+** ^Specifying an unknown parameter in the query component of a URI is not an
+** error. Future versions of SQLite might understand additional query
+** parameters. See "[query parameters with special meaning to SQLite]" for
+** additional information.
+**
+** [[URI filename examples]] <h3>URI filename examples</h3>
+**
+** <table border="1" align=center cellpadding=5>
+** <tr><th> URI filenames <th> Results
+** <tr><td> file:data.db <td>
+** Open the file "data.db" in the current directory.
+** <tr><td> file:/home/fred/data.db<br>
+** file:///home/fred/data.db <br>
+** file://localhost/home/fred/data.db <br> <td>
+** Open the database file "/home/fred/data.db".
+** <tr><td> file://darkstar/home/fred/data.db <td>
+** An error. "darkstar" is not a recognized authority.
+** <tr><td style="white-space:nowrap">
+** file:///C:/Documents%20and%20Settings/fred/Desktop/data.db
+** <td> Windows only: Open the file "data.db" on fred's desktop on drive
+** C:. Note that the %20 escaping in this example is not strictly
+** necessary - space characters can be used literally
+** in URI filenames.
+** <tr><td> file:data.db?mode=ro&cache=private <td>
+** Open file "data.db" in the current directory for read-only access.
+** Regardless of whether or not shared-cache mode is enabled by
+** default, use a private cache.
+** <tr><td> file:/home/fred/data.db?vfs=unix-nolock <td>
+** Open file "/home/fred/data.db". Use the special VFS "unix-nolock".
+** <tr><td> file:data.db?mode=readonly <td>
+** An error. "readonly" is not a valid option for the "mode" parameter.
+** </table>
+**
+** ^URI hexadecimal escape sequences (%HH) are supported within the path and
+** query components of a URI. A hexadecimal escape sequence consists of a
+** percent sign - "%" - followed by exactly two hexadecimal digits
+** specifying an octet value. ^Before the path or query components of a
+** URI filename are interpreted, they are encoded using UTF-8 and all
+** hexadecimal escape sequences replaced by a single byte containing the
+** corresponding octet. If this process generates an invalid UTF-8 encoding,
+** the results are undefined.
**
** <b>Note to Windows users:</b> The encoding used for the filename argument
** of sqlite3_open() and sqlite3_open_v2() must be UTF-8, not whatever
@@ -2913,6 +3176,45 @@
);
/*
+** CAPI3REF: Obtain Values For URI Parameters
+**
+** These are utility routines, useful to VFS implementations, that check
+** to see if a database file was a URI that contained a specific query
+** parameter, and if so obtains the value of that query parameter.
+**
+** If F is the database filename pointer passed into the xOpen() method of
+** a VFS implementation when the flags parameter to xOpen() has one or
+** more of the [SQLITE_OPEN_URI] or [SQLITE_OPEN_MAIN_DB] bits set and
+** P is the name of the query parameter, then
+** sqlite3_uri_parameter(F,P) returns the value of the P
+** parameter if it exists or a NULL pointer if P does not appear as a
+** query parameter on F. If P is a query parameter of F
+** has no explicit value, then sqlite3_uri_parameter(F,P) returns
+** a pointer to an empty string.
+**
+** The sqlite3_uri_boolean(F,P,B) routine assumes that P is a boolean
+** parameter and returns true (1) or false (0) according to the value
+** of P. The value of P is true if it is "yes" or "true" or "on" or
+** a non-zero number and is false otherwise. If P is not a query parameter
+** on F then sqlite3_uri_boolean(F,P,B) returns (B!=0).
+**
+** The sqlite3_uri_int64(F,P,D) routine converts the value of P into a
+** 64-bit signed integer and returns that integer, or D if P does not
+** exist. If the value of P is something other than an integer, then
+** zero is returned.
+**
+** If F is a NULL pointer, then sqlite3_uri_parameter(F,P) returns NULL and
+** sqlite3_uri_boolean(F,P,B) returns B. If F is not a NULL pointer and
+** is not a database file pathname pointer that SQLite passed into the xOpen
+** VFS method, then the behavior of this routine is undefined and probably
+** undesirable.
+*/
+SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam);
+SQLITE_API int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault);
+SQLITE_API sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int64);
+
+
+/*
** CAPI3REF: Error Codes And Messages
**
** ^The sqlite3_errcode() interface returns the numeric [result code] or
@@ -3027,43 +3329,45 @@
** Additional information is available at [limits | Limits in SQLite].
**
** <dl>
-** ^(<dt>SQLITE_LIMIT_LENGTH</dt>
+** [[SQLITE_LIMIT_LENGTH]] ^(<dt>SQLITE_LIMIT_LENGTH</dt>
** <dd>The maximum size of any string or BLOB or table row, in bytes.<dd>)^
**
-** ^(<dt>SQLITE_LIMIT_SQL_LENGTH</dt>
+** [[SQLITE_LIMIT_SQL_LENGTH]] ^(<dt>SQLITE_LIMIT_SQL_LENGTH</dt>
** <dd>The maximum length of an SQL statement, in bytes.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_COLUMN</dt>
+** [[SQLITE_LIMIT_COLUMN]] ^(<dt>SQLITE_LIMIT_COLUMN</dt>
** <dd>The maximum number of columns in a table definition or in the
** result set of a [SELECT] or the maximum number of columns in an index
** or in an ORDER BY or GROUP BY clause.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_EXPR_DEPTH</dt>
+** [[SQLITE_LIMIT_EXPR_DEPTH]] ^(<dt>SQLITE_LIMIT_EXPR_DEPTH</dt>
** <dd>The maximum depth of the parse tree on any expression.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_COMPOUND_SELECT</dt>
+** [[SQLITE_LIMIT_COMPOUND_SELECT]] ^(<dt>SQLITE_LIMIT_COMPOUND_SELECT</dt>
** <dd>The maximum number of terms in a compound SELECT statement.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_VDBE_OP</dt>
+** [[SQLITE_LIMIT_VDBE_OP]] ^(<dt>SQLITE_LIMIT_VDBE_OP</dt>
** <dd>The maximum number of instructions in a virtual machine program
** used to implement an SQL statement. This limit is not currently
** enforced, though that might be added in some future release of
** SQLite.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_FUNCTION_ARG</dt>
+** [[SQLITE_LIMIT_FUNCTION_ARG]] ^(<dt>SQLITE_LIMIT_FUNCTION_ARG</dt>
** <dd>The maximum number of arguments on a function.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_ATTACHED</dt>
+** [[SQLITE_LIMIT_ATTACHED]] ^(<dt>SQLITE_LIMIT_ATTACHED</dt>
** <dd>The maximum number of [ATTACH | attached databases].)^</dd>
**
+** [[SQLITE_LIMIT_LIKE_PATTERN_LENGTH]]
** ^(<dt>SQLITE_LIMIT_LIKE_PATTERN_LENGTH</dt>
** <dd>The maximum length of the pattern argument to the [LIKE] or
** [GLOB] operators.</dd>)^
**
+** [[SQLITE_LIMIT_VARIABLE_NUMBER]]
** ^(<dt>SQLITE_LIMIT_VARIABLE_NUMBER</dt>
** <dd>The maximum index number of any [parameter] in an SQL statement.)^
**
-** ^(<dt>SQLITE_LIMIT_TRIGGER_DEPTH</dt>
+** [[SQLITE_LIMIT_TRIGGER_DEPTH]] ^(<dt>SQLITE_LIMIT_TRIGGER_DEPTH</dt>
** <dd>The maximum depth of recursion for triggers.</dd>)^
** </dl>
*/
@@ -3103,7 +3407,8 @@
** that the supplied string is nul-terminated, then there is a small
** performance advantage to be gained by passing an nByte parameter that
** is equal to the number of bytes in the input string <i>including</i>
-** the nul-terminator bytes.
+** the nul-terminator bytes as this saves SQLite from having to
+** make a copy of the input string.
**
** ^If pzTail is not NULL then *pzTail is made to point to the first byte
** past the end of the first SQL statement in zSql. These routines only
@@ -3154,7 +3459,7 @@
** ^The specific value of WHERE-clause [parameter] might influence the
** choice of query plan if the parameter is the left-hand side of a [LIKE]
** or [GLOB] operator or if the parameter is compared to an indexed column
-** and the [SQLITE_ENABLE_STAT2] compile-time option is enabled.
+** and the [SQLITE_ENABLE_STAT3] compile-time option is enabled.
** the
** </li>
** </ol>
@@ -3201,17 +3506,53 @@
** CAPI3REF: Determine If An SQL Statement Writes The Database
**
** ^The sqlite3_stmt_readonly(X) interface returns true (non-zero) if
-** the [prepared statement] X is [SELECT] statement and false (zero) if
-** X is an [INSERT], [UPDATE], [DELETE], CREATE, DROP, [ANALYZE],
-** [ALTER], or [REINDEX] statement.
-** If X is a NULL pointer or any other kind of statement, including but
-** not limited to [ATTACH], [DETACH], [COMMIT], [ROLLBACK], [RELEASE],
-** [SAVEPOINT], [PRAGMA], or [VACUUM] the result of sqlite3_stmt_readonly(X) is
-** undefined.
+** and only if the [prepared statement] X makes no direct changes to
+** the content of the database file.
+**
+** Note that [application-defined SQL functions] or
+** [virtual tables] might change the database indirectly as a side effect.
+** ^(For example, if an application defines a function "eval()" that
+** calls [sqlite3_exec()], then the following SQL statement would
+** change the database file through side-effects:
+**
+** <blockquote><pre>
+** SELECT eval('DELETE FROM t1') FROM t2;
+** </pre></blockquote>
+**
+** But because the [SELECT] statement does not change the database file
+** directly, sqlite3_stmt_readonly() would still return true.)^
+**
+** ^Transaction control statements such as [BEGIN], [COMMIT], [ROLLBACK],
+** [SAVEPOINT], and [RELEASE] cause sqlite3_stmt_readonly() to return true,
+** since the statements themselves do not actually modify the database but
+** rather they control the timing of when other statements modify the
+** database. ^The [ATTACH] and [DETACH] statements also cause
+** sqlite3_stmt_readonly() to return true since, while those statements
+** change the configuration of a database connection, they do not make
+** changes to the content of the database files on disk.
*/
SQLITE_API int sqlite3_stmt_readonly(sqlite3_stmt *pStmt);
/*
+** CAPI3REF: Determine If A Prepared Statement Has Been Reset
+**
+** ^The sqlite3_stmt_busy(S) interface returns true (non-zero) if the
+** [prepared statement] S has been stepped at least once using
+** [sqlite3_step(S)] but has not run to completion and/or has not
+** been reset using [sqlite3_reset(S)]. ^The sqlite3_stmt_busy(S)
+** interface returns false if S is a NULL pointer. If S is not a
+** NULL pointer and is not a pointer to a valid [prepared statement]
+** object, then the behavior is undefined and probably undesirable.
+**
+** This interface can be used in combination [sqlite3_next_stmt()]
+** to locate all prepared statements associated with a database
+** connection that are in need of being reset. This can be used,
+** for example, in diagnostic routines to search for prepared
+** statements that are holding a transaction open.
+*/
+SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*);
+
+/*
** CAPI3REF: Dynamically Typed Value Object
** KEYWORDS: {protected sqlite3_value} {unprotected sqlite3_value}
**
@@ -3227,7 +3568,7 @@
** whether or not it requires a protected sqlite3_value.
**
** The terms "protected" and "unprotected" refer to whether or not
-** a mutex is held. A internal mutex is held for a protected
+** a mutex is held. An internal mutex is held for a protected
** sqlite3_value object but no mutex is held for an unprotected
** sqlite3_value object. If SQLite is compiled to be single-threaded
** (with [SQLITE_THREADSAFE=0] and with [sqlite3_threadsafe()] returning 0)
@@ -3307,6 +3648,13 @@
** number of <u>bytes</u> in the value, not the number of characters.)^
** ^If the fourth parameter is negative, the length of the string is
** the number of bytes up to the first zero terminator.
+** If a non-negative fourth parameter is provided to sqlite3_bind_text()
+** or sqlite3_bind_text16() then that parameter must be the byte offset
+** where the NUL terminator would occur assuming the string were NUL
+** terminated. If any NUL characters occur at byte offsets less than
+** the value of the fourth parameter then the resulting string value will
+** contain embedded NULs. The result of expressions involving strings
+** with embedded NULs is undefined.
**
** ^The fifth argument to sqlite3_bind_blob(), sqlite3_bind_text(), and
** sqlite3_bind_text16() is a destructor used to dispose of the BLOB or
@@ -3451,7 +3799,9 @@
** column number. ^The leftmost column is number 0.
**
** ^The returned string pointer is valid until either the [prepared statement]
-** is destroyed by [sqlite3_finalize()] or until the next call to
+** is destroyed by [sqlite3_finalize()] or until the statement is automatically
+** reprepared by the first call to [sqlite3_step()] for a particular run
+** or until the next call to
** sqlite3_column_name() or sqlite3_column_name16() on the same column.
**
** ^If sqlite3_malloc() fails during the processing of either routine
@@ -3477,7 +3827,9 @@
** the database name, the _table_ routines return the table name, and
** the origin_ routines return the column name.
** ^The returned string is valid until the [prepared statement] is destroyed
-** using [sqlite3_finalize()] or until the same information is requested
+** using [sqlite3_finalize()] or until the statement is automatically
+** reprepared by the first call to [sqlite3_step()] for a particular run
+** or until the same information is requested
** again in a different encoding.
**
** ^The names returned are the original un-aliased names of the
@@ -3571,7 +3923,7 @@
** ^[SQLITE_BUSY] means that the database engine was unable to acquire the
** database locks it needs to do its job. ^If the statement is a [COMMIT]
** or occurs outside of an explicit transaction, then you can retry the
-** statement. If the statement is not a [COMMIT] and occurs within a
+** statement. If the statement is not a [COMMIT] and occurs within an
** explicit transaction then you should rollback the transaction before
** continuing.
**
@@ -3601,13 +3953,17 @@
** be the case that the same database connection is being used by two or
** more threads at the same moment in time.
**
-** For all versions of SQLite up to and including 3.6.23.1, it was required
-** after sqlite3_step() returned anything other than [SQLITE_ROW] that
-** [sqlite3_reset()] be called before any subsequent invocation of
-** sqlite3_step(). Failure to invoke [sqlite3_reset()] in this way would
-** result in an [SQLITE_MISUSE] return from sqlite3_step(). But after
-** version 3.6.23.1, sqlite3_step() began calling [sqlite3_reset()]
-** automatically in this circumstance rather than returning [SQLITE_MISUSE].
+** For all versions of SQLite up to and including 3.6.23.1, a call to
+** [sqlite3_reset()] was required after sqlite3_step() returned anything
+** other than [SQLITE_ROW] before any subsequent invocation of
+** sqlite3_step(). Failure to reset the prepared statement using
+** [sqlite3_reset()] would result in an [SQLITE_MISUSE] return from
+** sqlite3_step(). But after version 3.6.23.1, sqlite3_step() began
+** calling [sqlite3_reset()] automatically in this circumstance rather
+** than returning [SQLITE_MISUSE]. This is not considered a compatibility
+** break because any application that ever receives an SQLITE_MISUSE error
+** is broken by definition. The [SQLITE_OMIT_AUTORESET] compile-time option
+** can be used to restore the legacy behavior.
**
** <b>Goofy Interface Alert:</b> In the legacy interface, the sqlite3_step()
** API always returns a generic error code, [SQLITE_ERROR], following any
@@ -3632,6 +3988,12 @@
** (via calls to the [sqlite3_column_int | sqlite3_column_*()] of
** interfaces) then sqlite3_data_count(P) returns 0.
** ^The sqlite3_data_count(P) routine also returns 0 if P is a NULL pointer.
+** ^The sqlite3_data_count(P) routine returns 0 if the previous call to
+** [sqlite3_step](P) returned [SQLITE_DONE]. ^The sqlite3_data_count(P)
+** will return non-zero if previous call to [sqlite3_step](P) returned
+** [SQLITE_ROW], except in the case of the [PRAGMA incremental_vacuum]
+** where it always returns zero since each step of that multi-step
+** pragma returns 0 columns of data.
**
** See also: [sqlite3_column_count()]
*/
@@ -3731,7 +4093,7 @@
** bytes in the string, not the number of characters.
**
** ^Strings returned by sqlite3_column_text() and sqlite3_column_text16(),
-** even empty strings, are always zero terminated. ^The return
+** even empty strings, are always zero-terminated. ^The return
** value from sqlite3_column_blob() for a zero-length BLOB is a NULL pointer.
**
** ^The object returned by [sqlite3_column_value()] is an
@@ -3846,7 +4208,7 @@
** CAPI3REF: Destroy A Prepared Statement Object
**
** ^The sqlite3_finalize() function is called to delete a [prepared statement].
-** ^If the most recent evaluation of the statement encountered no errors or
+** ^If the most recent evaluation of the statement encountered no errors
** or if the statement is never been evaluated, then sqlite3_finalize() returns
** SQLITE_OK. ^If the most recent evaluation of statement S failed, then
** sqlite3_finalize(S) returns the appropriate [error code] or
@@ -3905,7 +4267,7 @@
** are used to add SQL functions or aggregates or to redefine the behavior
** of existing SQL functions or aggregates. The only differences between
** these routines are the text encoding expected for
-** the the second parameter (the name of the function being created)
+** the second parameter (the name of the function being created)
** and the presence or absence of a destructor callback for
** the application data pointer.
**
@@ -3944,16 +4306,16 @@
** ^(The fifth parameter is an arbitrary pointer. The implementation of the
** function can gain access to this pointer using [sqlite3_user_data()].)^
**
-** ^The seventh, eighth and ninth parameters, xFunc, xStep and xFinal, are
+** ^The sixth, seventh and eighth parameters, xFunc, xStep and xFinal, are
** pointers to C-language functions that implement the SQL function or
** aggregate. ^A scalar SQL function requires an implementation of the xFunc
** callback only; NULL pointers must be passed as the xStep and xFinal
** parameters. ^An aggregate SQL function requires an implementation of xStep
** and xFinal and NULL pointer must be passed for xFunc. ^To delete an existing
-** SQL function or aggregate, pass NULL poiners for all three function
+** SQL function or aggregate, pass NULL pointers for all three function
** callbacks.
**
-** ^(If the tenth parameter to sqlite3_create_function_v2() is not NULL,
+** ^(If the ninth parameter to sqlite3_create_function_v2() is not NULL,
** then it is destructor for the application data pointer.
** The destructor is invoked when the function is deleted, either by being
** overloaded or when the database connection closes.)^
@@ -4057,7 +4419,7 @@
** The xFunc (for scalar functions) or xStep (for aggregates) parameters
** to [sqlite3_create_function()] and [sqlite3_create_function16()]
** define callbacks that implement the SQL functions and aggregates.
-** The 4th parameter to these callbacks is an array of pointers to
+** The 3rd parameter to these callbacks is an array of pointers to
** [protected sqlite3_value] objects. There is one [sqlite3_value] object for
** each parameter to the SQL function. These routines are used to
** extract values from the [sqlite3_value] objects.
@@ -4311,7 +4673,12 @@
** ^If the 3rd parameter to the sqlite3_result_text* interfaces
** is non-negative, then as many bytes (not characters) of the text
** pointed to by the 2nd parameter are taken as the application-defined
-** function result.
+** function result. If the 3rd parameter is non-negative, then it
+** must be the byte offset into the string where the NUL terminator would
+** appear if the string where NUL terminated. If any NUL characters occur
+** in the string at a byte offset that is less than the value of the 3rd
+** parameter, then the resulting string will contain embedded NULs and the
+** result of expressions operating on strings with embedded NULs is undefined.
** ^If the 4th parameter to the sqlite3_result_text* interfaces
** or sqlite3_result_blob is a non-NULL pointer, then SQLite calls that
** function as the destructor on the text or BLOB result when it has
@@ -4384,7 +4751,7 @@
** ^The [SQLITE_UTF16_ALIGNED] value for eTextRep forces strings to begin
** on an even byte address.
**
-** ^The fourth argument, pArg, is a application data pointer that is passed
+** ^The fourth argument, pArg, is an application data pointer that is passed
** through as the first argument to the collating function callback.
**
** ^The fifth argument, xCallback, is a pointer to the collating function.
@@ -4400,7 +4767,7 @@
** by the eTextRep argument. The collating function must return an
** integer that is negative, zero, or positive
** if the first string is less than, equal to, or greater than the second,
-** respectively. A collating function must alway return the same answer
+** respectively. A collating function must always return the same answer
** given the same inputs. If two or more collating functions are registered
** to the same collation name (using different eTextRep values) then all
** must give an equivalent answer when invoked with equivalent strings.
@@ -4627,6 +4994,22 @@
SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt*);
/*
+** CAPI3REF: Return The Filename For A Database Connection
+**
+** ^The sqlite3_db_filename(D,N) interface returns a pointer to a filename
+** associated with database N of connection D. ^The main database file
+** has the name "main". If there is no attached database N on the database
+** connection D, or if database N is a temporary or in-memory database, then
+** a NULL pointer is returned.
+**
+** ^The filename returned by this function is the output of the
+** xFullPathname method of the [VFS]. ^In other words, the filename
+** will be an absolute pathname, even if the filename used
+** to open the database originally was a URI or relative pathname.
+*/
+SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName);
+
+/*
** CAPI3REF: Find the next prepared statement
**
** ^This interface returns a pointer to the next [prepared statement] after
@@ -4661,13 +5044,15 @@
** on the same [database connection] D, or NULL for
** the first call for each function on D.
**
+** The commit and rollback hook callbacks are not reentrant.
** The callback implementation must not do anything that will modify
** the database connection that invoked the callback. Any actions
** to modify the database connection must be deferred until after the
** completion of the [sqlite3_step()] call that triggered the commit
** or rollback hook in the first place.
-** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their
-** database connections for the meaning of "modify" in this paragraph.
+** Note that running any other SQL statements, including SELECT statements,
+** or merely calling [sqlite3_prepare_v2()] and [sqlite3_step()] will modify
+** the database connections for the meaning of "modify" in this paragraph.
**
** ^Registering a NULL function disables the callback.
**
@@ -4780,10 +5165,25 @@
** which might be more or less than the amount requested.
** ^The sqlite3_release_memory() routine is a no-op returning zero
** if SQLite is not compiled with [SQLITE_ENABLE_MEMORY_MANAGEMENT].
+**
+** See also: [sqlite3_db_release_memory()]
*/
SQLITE_API int sqlite3_release_memory(int);
/*
+** CAPI3REF: Free Memory Used By A Database Connection
+**
+** ^The sqlite3_db_release_memory(D) interface attempts to free as much heap
+** memory as possible from database connection D. Unlike the
+** [sqlite3_release_memory()] interface, this interface is effect even
+** when then [SQLITE_ENABLE_MEMORY_MANAGEMENT] compile-time option is
+** omitted.
+**
+** See also: [sqlite3_release_memory()]
+*/
+SQLITE_API int sqlite3_db_release_memory(sqlite3*);
+
+/*
** CAPI3REF: Impose A Limit On Heap Size
**
** ^The sqlite3_soft_heap_limit64() interface sets and/or queries the
@@ -4797,7 +5197,8 @@
** is advisory only.
**
** ^The return value from sqlite3_soft_heap_limit64() is the size of
-** the soft heap limit prior to the call. ^If the argument N is negative
+** the soft heap limit prior to the call, or negative in the case of an
+** error. ^If the argument N is negative
** then no change is made to the soft heap limit. Hence, the current
** size of the soft heap limit can be determined by invoking
** sqlite3_soft_heap_limit64() with a negative argument.
@@ -4812,8 +5213,8 @@
** <li> Memory accounting is disabled using a combination of the
** [sqlite3_config]([SQLITE_CONFIG_MEMSTATUS],...) start-time option and
** the [SQLITE_DEFAULT_MEMSTATUS] compile-time option.
-** <li> An alternative page cache implementation is specifed using
-** [sqlite3_config]([SQLITE_CONFIG_PCACHE],...).
+** <li> An alternative page cache implementation is specified using
+** [sqlite3_config]([SQLITE_CONFIG_PCACHE2],...).
** <li> The page cache allocates from its own memory pool supplied
** by [sqlite3_config]([SQLITE_CONFIG_PAGECACHE],...) rather than
** from the heap.
@@ -5033,7 +5434,7 @@
** CAPI3REF: Virtual Table Object
** KEYWORDS: sqlite3_module {virtual table module}
**
-** This structure, sometimes called a a "virtual table module",
+** This structure, sometimes called a "virtual table module",
** defines the implementation of a [virtual tables].
** This structure consists mostly of methods for the module.
**
@@ -5073,6 +5474,11 @@
void (**pxFunc)(sqlite3_context*,int,sqlite3_value**),
void **ppArg);
int (*xRename)(sqlite3_vtab *pVtab, const char *zNew);
+ /* The methods above are in version 1 of the sqlite_module object. Those
+ ** below are for version 2 and greater. */
+ int (*xSavepoint)(sqlite3_vtab *pVTab, int);
+ int (*xRelease)(sqlite3_vtab *pVTab, int);
+ int (*xRollbackTo)(sqlite3_vtab *pVTab, int);
};
/*
@@ -5345,7 +5751,7 @@
** This is true if any column of the row is changed, even a column
** other than the one the BLOB handle is open on.)^
** ^Calls to [sqlite3_blob_read()] and [sqlite3_blob_write()] for
-** a expired BLOB handle fail with an return code of [SQLITE_ABORT].
+** an expired BLOB handle fail with a return code of [SQLITE_ABORT].
** ^(Changes written into a BLOB prior to the BLOB expiring are not
** rolled back by the expiration of the BLOB. Such changes will eventually
** commit if the transaction continues to completion.)^
@@ -5550,7 +5956,7 @@
**
** <ul>
** <li> SQLITE_MUTEX_OS2
-** <li> SQLITE_MUTEX_PTHREAD
+** <li> SQLITE_MUTEX_PTHREADS
** <li> SQLITE_MUTEX_W32
** <li> SQLITE_MUTEX_NOOP
** </ul>)^
@@ -5558,7 +5964,7 @@
** ^The SQLITE_MUTEX_NOOP implementation is a set of routines
** that does no real locking and is appropriate for use in
** a single-threaded application. ^The SQLITE_MUTEX_OS2,
-** SQLITE_MUTEX_PTHREAD, and SQLITE_MUTEX_W32 implementations
+** SQLITE_MUTEX_PTHREADS, and SQLITE_MUTEX_W32 implementations
** are appropriate for use on OS/2, Unix, and Windows.
**
** ^(If SQLite is compiled with the SQLITE_MUTEX_APPDEF preprocessor
@@ -5748,14 +6154,14 @@
** ^These routines should return true if the mutex in their argument
** is held or not held, respectively, by the calling thread.
**
-** ^The implementation is not required to provided versions of these
+** ^The implementation is not required to provide versions of these
** routines that actually work. If the implementation does not provide working
** versions of these routines, it should at least provide stubs that always
** return true so that one does not get spurious assertion failures.
**
** ^If the argument to sqlite3_mutex_held() is a NULL pointer then
** the routine should return 1. This seems counter-intuitive since
-** clearly the mutex cannot be held if it does not exist. But the
+** clearly the mutex cannot be held if it does not exist. But
** the reason the mutex does not exist is because the build is not
** using mutexes. And we do not want the assert() containing the
** call to sqlite3_mutex_held() to fail, so a non-zero return is
@@ -5785,7 +6191,8 @@
#define SQLITE_MUTEX_STATIC_OPEN 4 /* sqlite3BtreeOpen() */
#define SQLITE_MUTEX_STATIC_PRNG 5 /* sqlite3_random() */
#define SQLITE_MUTEX_STATIC_LRU 6 /* lru page list */
-#define SQLITE_MUTEX_STATIC_LRU2 7 /* lru page list */
+#define SQLITE_MUTEX_STATIC_LRU2 7 /* NOT USED */
+#define SQLITE_MUTEX_STATIC_PMEM 7 /* sqlite3PageMalloc() */
/*
** CAPI3REF: Retrieve the mutex for a database connection
@@ -5875,9 +6282,10 @@
#define SQLITE_TESTCTRL_RESERVE 14
#define SQLITE_TESTCTRL_OPTIMIZATIONS 15
#define SQLITE_TESTCTRL_ISKEYWORD 16
-#define SQLITE_TESTCTRL_PGHDRSZ 17
-#define SQLITE_TESTCTRL_SCRATCHMALLOC 18
-#define SQLITE_TESTCTRL_LAST 18
+#define SQLITE_TESTCTRL_SCRATCHMALLOC 17
+#define SQLITE_TESTCTRL_LOCALTIME_FAULT 18
+#define SQLITE_TESTCTRL_EXPLAIN_STMT 19
+#define SQLITE_TESTCTRL_LAST 19
/*
** CAPI3REF: SQLite Runtime Status
@@ -5886,7 +6294,7 @@
** about the performance of SQLite, and optionally to reset various
** highwater marks. ^The first argument is an integer code for
** the specific parameter to measure. ^(Recognized integer codes
-** are of the form [SQLITE_STATUS_MEMORY_USED | SQLITE_STATUS_...].)^
+** are of the form [status parameters | SQLITE_STATUS_...].)^
** ^The current value of the parameter is returned into *pCurrent.
** ^The highest recorded value is returned in *pHighwater. ^If the
** resetFlag is true, then the highest record value is reset after
@@ -5913,12 +6321,13 @@
/*
** CAPI3REF: Status Parameters
+** KEYWORDS: {status parameters}
**
** These integer constants designate various run-time status parameters
** that can be returned by [sqlite3_status()].
**
** <dl>
-** ^(<dt>SQLITE_STATUS_MEMORY_USED</dt>
+** [[SQLITE_STATUS_MEMORY_USED]] ^(<dt>SQLITE_STATUS_MEMORY_USED</dt>
** <dd>This parameter is the current amount of memory checked out
** using [sqlite3_malloc()], either directly or indirectly. The
** figure includes calls made to [sqlite3_malloc()] by the application
@@ -5928,22 +6337,24 @@
** this parameter. The amount returned is the sum of the allocation
** sizes as reported by the xSize method in [sqlite3_mem_methods].</dd>)^
**
-** ^(<dt>SQLITE_STATUS_MALLOC_SIZE</dt>
+** [[SQLITE_STATUS_MALLOC_SIZE]] ^(<dt>SQLITE_STATUS_MALLOC_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [sqlite3_malloc()] or [sqlite3_realloc()] (or their
** internal equivalents). Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_MALLOC_COUNT</dt>
-** <dd>This parameter records the number of separate memory allocations.</dd>)^
+** [[SQLITE_STATUS_MALLOC_COUNT]] ^(<dt>SQLITE_STATUS_MALLOC_COUNT</dt>
+** <dd>This parameter records the number of separate memory allocations
+** currently checked out.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_PAGECACHE_USED</dt>
+** [[SQLITE_STATUS_PAGECACHE_USED]] ^(<dt>SQLITE_STATUS_PAGECACHE_USED</dt>
** <dd>This parameter returns the number of pages used out of the
** [pagecache memory allocator] that was configured using
** [SQLITE_CONFIG_PAGECACHE]. The
** value returned is in pages, not in bytes.</dd>)^
**
+** [[SQLITE_STATUS_PAGECACHE_OVERFLOW]]
** ^(<dt>SQLITE_STATUS_PAGECACHE_OVERFLOW</dt>
** <dd>This parameter returns the number of bytes of page cache
** allocation which could not be satisfied by the [SQLITE_CONFIG_PAGECACHE]
@@ -5953,13 +6364,13 @@
** [SQLITE_CONFIG_PAGECACHE]) and allocations that overflowed because
** no space was left in the page cache.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_PAGECACHE_SIZE</dt>
+** [[SQLITE_STATUS_PAGECACHE_SIZE]] ^(<dt>SQLITE_STATUS_PAGECACHE_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [pagecache memory allocator]. Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_SCRATCH_USED</dt>
+** [[SQLITE_STATUS_SCRATCH_USED]] ^(<dt>SQLITE_STATUS_SCRATCH_USED</dt>
** <dd>This parameter returns the number of allocations used out of the
** [scratch memory allocator] configured using
** [SQLITE_CONFIG_SCRATCH]. The value returned is in allocations, not
@@ -5967,7 +6378,7 @@
** outstanding at time, this parameter also reports the number of threads
** using scratch memory at the same time.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_SCRATCH_OVERFLOW</dt>
+** [[SQLITE_STATUS_SCRATCH_OVERFLOW]] ^(<dt>SQLITE_STATUS_SCRATCH_OVERFLOW</dt>
** <dd>This parameter returns the number of bytes of scratch memory
** allocation which could not be satisfied by the [SQLITE_CONFIG_SCRATCH]
** buffer and where forced to overflow to [sqlite3_malloc()]. The values
@@ -5977,13 +6388,13 @@
** slots were available.
** </dd>)^
**
-** ^(<dt>SQLITE_STATUS_SCRATCH_SIZE</dt>
+** [[SQLITE_STATUS_SCRATCH_SIZE]] ^(<dt>SQLITE_STATUS_SCRATCH_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [scratch memory allocator]. Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_PARSER_STACK</dt>
+** [[SQLITE_STATUS_PARSER_STACK]] ^(<dt>SQLITE_STATUS_PARSER_STACK</dt>
** <dd>This parameter records the deepest parser stack. It is only
** meaningful if SQLite is compiled with [YYTRACKMAXSTACKDEPTH].</dd>)^
** </dl>
@@ -6008,9 +6419,9 @@
** about a single [database connection]. ^The first argument is the
** database connection object to be interrogated. ^The second argument
** is an integer constant, taken from the set of
-** [SQLITE_DBSTATUS_LOOKASIDE_USED | SQLITE_DBSTATUS_*] macros, that
+** [SQLITE_DBSTATUS options], that
** determines the parameter to interrogate. The set of
-** [SQLITE_DBSTATUS_LOOKASIDE_USED | SQLITE_DBSTATUS_*] macros is likely
+** [SQLITE_DBSTATUS options] is likely
** to grow in future releases of SQLite.
**
** ^The current value of the requested parameter is written into *pCur
@@ -6027,6 +6438,7 @@
/*
** CAPI3REF: Status Parameters for database connections
+** KEYWORDS: {SQLITE_DBSTATUS options}
**
** These constants are the available integer "verbs" that can be passed as
** the second argument to the [sqlite3_db_status()] interface.
@@ -6038,16 +6450,37 @@
** if a discontinued or unsupported verb is invoked.
**
** <dl>
-** ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_USED</dt>
+** [[SQLITE_DBSTATUS_LOOKASIDE_USED]] ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_USED</dt>
** <dd>This parameter returns the number of lookaside memory slots currently
** checked out.</dd>)^
**
-** ^(<dt>SQLITE_DBSTATUS_CACHE_USED</dt>
+** [[SQLITE_DBSTATUS_LOOKASIDE_HIT]] ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_HIT</dt>
+** <dd>This parameter returns the number malloc attempts that were
+** satisfied using lookaside memory. Only the high-water value is meaningful;
+** the current value is always zero.)^
+**
+** [[SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE]]
+** ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE</dt>
+** <dd>This parameter returns the number malloc attempts that might have
+** been satisfied using lookaside memory but failed due to the amount of
+** memory requested being larger than the lookaside slot size.
+** Only the high-water value is meaningful;
+** the current value is always zero.)^
+**
+** [[SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL]]
+** ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL</dt>
+** <dd>This parameter returns the number malloc attempts that might have
+** been satisfied using lookaside memory but failed due to all lookaside
+** memory already being in use.
+** Only the high-water value is meaningful;
+** the current value is always zero.)^
+**
+** [[SQLITE_DBSTATUS_CACHE_USED]] ^(<dt>SQLITE_DBSTATUS_CACHE_USED</dt>
** <dd>This parameter returns the approximate number of of bytes of heap
** memory used by all pager caches associated with the database connection.)^
** ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_USED is always 0.
**
-** ^(<dt>SQLITE_DBSTATUS_SCHEMA_USED</dt>
+** [[SQLITE_DBSTATUS_SCHEMA_USED]] ^(<dt>SQLITE_DBSTATUS_SCHEMA_USED</dt>
** <dd>This parameter returns the approximate number of of bytes of heap
** memory used to store the schema for all databases associated
** with the connection - main, temp, and any [ATTACH]-ed databases.)^
@@ -6056,26 +6489,43 @@
** [shared cache mode] being enabled.
** ^The highwater mark associated with SQLITE_DBSTATUS_SCHEMA_USED is always 0.
**
-** ^(<dt>SQLITE_DBSTATUS_STMT_USED</dt>
+** [[SQLITE_DBSTATUS_STMT_USED]] ^(<dt>SQLITE_DBSTATUS_STMT_USED</dt>
** <dd>This parameter returns the approximate number of of bytes of heap
** and lookaside memory used by all prepared statements associated with
** the database connection.)^
** ^The highwater mark associated with SQLITE_DBSTATUS_STMT_USED is always 0.
** </dd>
+**
+** [[SQLITE_DBSTATUS_CACHE_HIT]] ^(<dt>SQLITE_DBSTATUS_CACHE_HIT</dt>
+** <dd>This parameter returns the number of pager cache hits that have
+** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_HIT
+** is always 0.
+** </dd>
+**
+** [[SQLITE_DBSTATUS_CACHE_MISS]] ^(<dt>SQLITE_DBSTATUS_CACHE_MISS</dt>
+** <dd>This parameter returns the number of pager cache misses that have
+** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_MISS
+** is always 0.
+** </dd>
** </dl>
*/
-#define SQLITE_DBSTATUS_LOOKASIDE_USED 0
-#define SQLITE_DBSTATUS_CACHE_USED 1
-#define SQLITE_DBSTATUS_SCHEMA_USED 2
-#define SQLITE_DBSTATUS_STMT_USED 3
-#define SQLITE_DBSTATUS_MAX 3 /* Largest defined DBSTATUS */
+#define SQLITE_DBSTATUS_LOOKASIDE_USED 0
+#define SQLITE_DBSTATUS_CACHE_USED 1
+#define SQLITE_DBSTATUS_SCHEMA_USED 2
+#define SQLITE_DBSTATUS_STMT_USED 3
+#define SQLITE_DBSTATUS_LOOKASIDE_HIT 4
+#define SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE 5
+#define SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL 6
+#define SQLITE_DBSTATUS_CACHE_HIT 7
+#define SQLITE_DBSTATUS_CACHE_MISS 8
+#define SQLITE_DBSTATUS_MAX 8 /* Largest defined DBSTATUS */
/*
** CAPI3REF: Prepared Statement Status
**
** ^(Each prepared statement maintains various
-** [SQLITE_STMTSTATUS_SORT | counters] that measure the number
+** [SQLITE_STMTSTATUS counters] that measure the number
** of times it has performed specific operations.)^ These counters can
** be used to monitor the performance characteristics of the prepared
** statements. For example, if the number of table steps greatly exceeds
@@ -6086,7 +6536,7 @@
** ^(This interface is used to retrieve and reset counter values from
** a [prepared statement]. The first argument is the prepared statement
** object to be interrogated. The second argument
-** is an integer code for a specific [SQLITE_STMTSTATUS_SORT | counter]
+** is an integer code for a specific [SQLITE_STMTSTATUS counter]
** to be interrogated.)^
** ^The current value of the requested counter is returned.
** ^If the resetFlg is true, then the counter is reset to zero after this
@@ -6098,30 +6548,30 @@
/*
** CAPI3REF: Status Parameters for prepared statements
+** KEYWORDS: {SQLITE_STMTSTATUS counter} {SQLITE_STMTSTATUS counters}
**
** These preprocessor macros define integer codes that name counter
** values associated with the [sqlite3_stmt_status()] interface.
** The meanings of the various counters are as follows:
**
** <dl>
-** <dt>SQLITE_STMTSTATUS_FULLSCAN_STEP</dt>
+** [[SQLITE_STMTSTATUS_FULLSCAN_STEP]] <dt>SQLITE_STMTSTATUS_FULLSCAN_STEP</dt>
** <dd>^This is the number of times that SQLite has stepped forward in
** a table as part of a full table scan. Large numbers for this counter
** may indicate opportunities for performance improvement through
** careful use of indices.</dd>
**
-** <dt>SQLITE_STMTSTATUS_SORT</dt>
+** [[SQLITE_STMTSTATUS_SORT]] <dt>SQLITE_STMTSTATUS_SORT</dt>
** <dd>^This is the number of sort operations that have occurred.
** A non-zero value in this counter may indicate an opportunity to
** improvement performance through careful use of indices.</dd>
**
-** <dt>SQLITE_STMTSTATUS_AUTOINDEX</dt>
+** [[SQLITE_STMTSTATUS_AUTOINDEX]] <dt>SQLITE_STMTSTATUS_AUTOINDEX</dt>
** <dd>^This is the number of rows inserted into transient indices that
** were created automatically in order to help joins run faster.
** A non-zero value in this counter may indicate an opportunity to
** improvement performance by adding permanent indices that do not
** need to be reinitialized each time the statement is run.</dd>
-**
** </dl>
*/
#define SQLITE_STMTSTATUS_FULLSCAN_STEP 1
@@ -6137,17 +6587,33 @@
** sqlite3_pcache object except by holding and passing pointers
** to the object.
**
-** See [sqlite3_pcache_methods] for additional information.
+** See [sqlite3_pcache_methods2] for additional information.
*/
typedef struct sqlite3_pcache sqlite3_pcache;
/*
+** CAPI3REF: Custom Page Cache Object
+**
+** The sqlite3_pcache_page object represents a single page in the
+** page cache. The page cache will allocate instances of this
+** object. Various methods of the page cache use pointers to instances
+** of this object as parameters or as their return value.
+**
+** See [sqlite3_pcache_methods2] for additional information.
+*/
+typedef struct sqlite3_pcache_page sqlite3_pcache_page;
+struct sqlite3_pcache_page {
+ void *pBuf; /* The content of the page */
+ void *pExtra; /* Extra information associated with the page */
+};
+
+/*
** CAPI3REF: Application Defined Page Cache.
** KEYWORDS: {page cache}
**
-** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE], ...) interface can
+** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE2], ...) interface can
** register an alternative page cache implementation by passing in an
-** instance of the sqlite3_pcache_methods structure.)^
+** instance of the sqlite3_pcache_methods2 structure.)^
** In many applications, most of the heap memory allocated by
** SQLite is used for the page cache.
** By implementing a
@@ -6161,21 +6627,23 @@
** extreme measure that is only needed by the most demanding applications.
** The built-in page cache is recommended for most uses.
**
-** ^(The contents of the sqlite3_pcache_methods structure are copied to an
+** ^(The contents of the sqlite3_pcache_methods2 structure are copied to an
** internal buffer by SQLite within the call to [sqlite3_config]. Hence
** the application may discard the parameter after the call to
** [sqlite3_config()] returns.)^
**
+** [[the xInit() page cache method]]
** ^(The xInit() method is called once for each effective
** call to [sqlite3_initialize()])^
** (usually only once during the lifetime of the process). ^(The xInit()
-** method is passed a copy of the sqlite3_pcache_methods.pArg value.)^
+** method is passed a copy of the sqlite3_pcache_methods2.pArg value.)^
** The intent of the xInit() method is to set up global data structures
** required by the custom page cache implementation.
** ^(If the xInit() method is NULL, then the
** built-in default page cache is used instead of the application defined
** page cache.)^
**
+** [[the xShutdown() page cache method]]
** ^The xShutdown() method is called by [sqlite3_shutdown()].
** It can be used to clean up
** any outstanding resources before process shutdown, if required.
@@ -6190,19 +6658,20 @@
** ^SQLite will never invoke xInit() more than once without an intervening
** call to xShutdown().
**
+** [[the xCreate() page cache methods]]
** ^SQLite invokes the xCreate() method to construct a new cache instance.
** SQLite will typically create one cache instance for each open database file,
** though this is not guaranteed. ^The
** first parameter, szPage, is the size in bytes of the pages that must
-** be allocated by the cache. ^szPage will not be a power of two. ^szPage
-** will the page size of the database file that is to be cached plus an
-** increment (here called "R") of about 100 or 200. SQLite will use the
-** extra R bytes on each page to store metadata about the underlying
-** database page on disk. The value of R depends
+** be allocated by the cache. ^szPage will always a power of two. ^The
+** second parameter szExtra is a number of bytes of extra storage
+** associated with each page cache entry. ^The szExtra parameter will
+** a number less than 250. SQLite will use the
+** extra szExtra bytes on each page to store metadata about the underlying
+** database page on disk. The value passed into szExtra depends
** on the SQLite version, the target platform, and how SQLite was compiled.
-** ^R is constant for a particular build of SQLite. ^The second argument to
-** xCreate(), bPurgeable, is true if the cache being created will
-** be used to cache database pages of a file stored on disk, or
+** ^The third argument to xCreate(), bPurgeable, is true if the cache being
+** created will be used to cache database pages of a file stored on disk, or
** false if it is used for an in-memory database. The cache implementation
** does not have to do anything special based with the value of bPurgeable;
** it is purely advisory. ^On a cache where bPurgeable is false, SQLite will
@@ -6212,6 +6681,7 @@
** ^Hence, a cache created with bPurgeable false will
** never contain any unpinned pages.
**
+** [[the xCachesize() page cache method]]
** ^(The xCachesize() method may be called at any time by SQLite to set the
** suggested maximum cache-size (number of pages stored by) the cache
** instance passed as the first argument. This is the value configured using
@@ -6219,20 +6689,27 @@
** parameter, the implementation is not required to do anything with this
** value; it is advisory only.
**
+** [[the xPagecount() page cache methods]]
** The xPagecount() method must return the number of pages currently
** stored in the cache, both pinned and unpinned.
**
+** [[the xFetch() page cache methods]]
** The xFetch() method locates a page in the cache and returns a pointer to
-** the page, or a NULL pointer.
-** A "page", in this context, means a buffer of szPage bytes aligned at an
-** 8-byte boundary. The page to be fetched is determined by the key. ^The
-** mimimum key value is 1. After it has been retrieved using xFetch, the page
-** is considered to be "pinned".
+** an sqlite3_pcache_page object associated with that page, or a NULL pointer.
+** The pBuf element of the returned sqlite3_pcache_page object will be a
+** pointer to a buffer of szPage bytes used to store the content of a
+** single database page. The pExtra element of sqlite3_pcache_page will be
+** a pointer to the szExtra bytes of extra storage that SQLite has requested
+** for each entry in the page cache.
+**
+** The page to be fetched is determined by the key. ^The minimum key value
+** is 1. After it has been retrieved using xFetch, the page is considered
+** to be "pinned".
**
** If the requested page is already in the page cache, then the page cache
** implementation must return a pointer to the page buffer with its content
** intact. If the requested page is not already in the cache, then the
-** behavior of the cache implementation should use the value of the createFlag
+** cache implementation should use the value of the createFlag
** parameter to help it determined what action to take:
**
** <table border=1 width=85% align=center>
@@ -6250,6 +6727,7 @@
** attempt to unpin one or more cache pages by spilling the content of
** pinned pages to disk and synching the operating system disk cache.
**
+** [[the xUnpin() page cache method]]
** ^xUnpin() is called by SQLite with a pointer to a currently pinned page
** as its second argument. If the third parameter, discard, is non-zero,
** then the page must be evicted from the cache.
@@ -6262,6 +6740,7 @@
** call to xUnpin() unpins the page regardless of the number of prior calls
** to xFetch().
**
+** [[the xRekey() page cache methods]]
** The xRekey() method is used to change the key value associated with the
** page passed as the second argument. If the cache
** previously contains an entry associated with newKey, it must be
@@ -6274,11 +6753,41 @@
** of these pages are pinned, they are implicitly unpinned, meaning that
** they can be safely discarded.
**
+** [[the xDestroy() page cache method]]
** ^The xDestroy() method is used to delete a cache allocated by xCreate().
** All resources associated with the specified cache should be freed. ^After
** calling the xDestroy() method, SQLite considers the [sqlite3_pcache*]
-** handle invalid, and will not use it with any other sqlite3_pcache_methods
+** handle invalid, and will not use it with any other sqlite3_pcache_methods2
** functions.
+**
+** [[the xShrink() page cache method]]
+** ^SQLite invokes the xShrink() method when it wants the page cache to
+** free up as much of heap memory as possible. The page cache implementation
+** is not obligated to free any memory, but well-behaved implementations should
+** do their best.
+*/
+typedef struct sqlite3_pcache_methods2 sqlite3_pcache_methods2;
+struct sqlite3_pcache_methods2 {
+ int iVersion;
+ void *pArg;
+ int (*xInit)(void*);
+ void (*xShutdown)(void*);
+ sqlite3_pcache *(*xCreate)(int szPage, int szExtra, int bPurgeable);
+ void (*xCachesize)(sqlite3_pcache*, int nCachesize);
+ int (*xPagecount)(sqlite3_pcache*);
+ sqlite3_pcache_page *(*xFetch)(sqlite3_pcache*, unsigned key, int createFlag);
+ void (*xUnpin)(sqlite3_pcache*, sqlite3_pcache_page*, int discard);
+ void (*xRekey)(sqlite3_pcache*, sqlite3_pcache_page*,
+ unsigned oldKey, unsigned newKey);
+ void (*xTruncate)(sqlite3_pcache*, unsigned iLimit);
+ void (*xDestroy)(sqlite3_pcache*);
+ void (*xShrink)(sqlite3_pcache*);
+};
+
+/*
+** This is the obsolete pcache_methods object that has now been replaced
+** by sqlite3_pcache_methods2. This object is not used by SQLite. It is
+** retained in the header file for backwards compatibility only.
*/
typedef struct sqlite3_pcache_methods sqlite3_pcache_methods;
struct sqlite3_pcache_methods {
@@ -6295,6 +6804,7 @@
void (*xDestroy)(sqlite3_pcache*);
};
+
/*
** CAPI3REF: Online Backup Object
**
@@ -6316,11 +6826,12 @@
**
** See Also: [Using the SQLite Online Backup API]
**
-** ^Exclusive access is required to the destination database for the
-** duration of the operation. ^However the source database is only
-** read-locked while it is actually being read; it is not locked
-** continuously for the entire backup operation. ^Thus, the backup may be
-** performed on a live source database without preventing other users from
+** ^SQLite holds a write transaction open on the destination database file
+** for the duration of the backup operation.
+** ^The source database is read-locked only while it is being read;
+** it is not locked continuously for the entire backup operation.
+** ^Thus, the backup may be performed on a live source database without
+** preventing other database connections from
** reading or writing to the source database while the backup is underway.
**
** ^(To perform a backup operation:
@@ -6335,7 +6846,7 @@
** There should be exactly one call to sqlite3_backup_finish() for each
** successful call to sqlite3_backup_init().
**
-** <b>sqlite3_backup_init()</b>
+** [[sqlite3_backup_init()]] <b>sqlite3_backup_init()</b>
**
** ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the
** [database connection] associated with the destination database
@@ -6347,11 +6858,11 @@
** sqlite3_backup_init(D,N,S,M) identify the [database connection]
** and database name of the source database, respectively.
** ^The source and destination [database connections] (parameters S and D)
-** must be different or else sqlite3_backup_init(D,N,S,M) will file with
+** must be different or else sqlite3_backup_init(D,N,S,M) will fail with
** an error.
**
** ^If an error occurs within sqlite3_backup_init(D,N,S,M), then NULL is
-** returned and an error code and error message are store3d in the
+** returned and an error code and error message are stored in the
** destination [database connection] D.
** ^The error code and message for the failed call to sqlite3_backup_init()
** can be retrieved using the [sqlite3_errcode()], [sqlite3_errmsg()], and/or
@@ -6362,13 +6873,13 @@
** sqlite3_backup_finish() functions to perform the specified backup
** operation.
**
-** <b>sqlite3_backup_step()</b>
+** [[sqlite3_backup_step()]] <b>sqlite3_backup_step()</b>
**
** ^Function sqlite3_backup_step(B,N) will copy up to N pages between
** the source and destination databases specified by [sqlite3_backup] object B.
** ^If N is negative, all remaining source pages are copied.
** ^If sqlite3_backup_step(B,N) successfully copies N pages and there
-** are still more pages to be copied, then the function resturns [SQLITE_OK].
+** are still more pages to be copied, then the function returns [SQLITE_OK].
** ^If sqlite3_backup_step(B,N) successfully finishes copying all pages
** from source to destination, then it returns [SQLITE_DONE].
** ^If an error occurs while running sqlite3_backup_step(B,N),
@@ -6382,7 +6893,7 @@
** <li> the destination database was opened read-only, or
** <li> the destination database is using write-ahead-log journaling
** and the destination and source page sizes differ, or
-** <li> The destination database is an in-memory database and the
+** <li> the destination database is an in-memory database and the
** destination and source page sizes differ.
** </ol>)^
**
@@ -6419,7 +6930,7 @@
** by the backup operation, then the backup database is automatically
** updated at the same time.
**
-** <b>sqlite3_backup_finish()</b>
+** [[sqlite3_backup_finish()]] <b>sqlite3_backup_finish()</b>
**
** When sqlite3_backup_step() has returned [SQLITE_DONE], or when the
** application wishes to abandon the backup operation, the application
@@ -6442,7 +6953,8 @@
** is not a permanent error and does not affect the return value of
** sqlite3_backup_finish().
**
-** <b>sqlite3_backup_remaining(), sqlite3_backup_pagecount()</b>
+** [[sqlite3_backup__remaining()]] [[sqlite3_backup_pagecount()]]
+** <b>sqlite3_backup_remaining() and sqlite3_backup_pagecount()</b>
**
** ^Each call to sqlite3_backup_step() sets two values inside
** the [sqlite3_backup] object: the number of pages still to be backed
@@ -6713,7 +7225,8 @@
** from SQL.
**
** ^Every new [database connection] defaults to having the auto-checkpoint
-** enabled with a threshold of 1000 pages. The use of this interface
+** enabled with a threshold of 1000 or [SQLITE_DEFAULT_WAL_AUTOCHECKPOINT]
+** pages. The use of this interface
** is only necessary if the default setting is found to be suboptimal
** for a particular application.
*/
@@ -6732,10 +7245,190 @@
** from SQL. ^The [sqlite3_wal_autocheckpoint()] interface and the
** [wal_autocheckpoint pragma] can be used to cause this interface to be
** run whenever the WAL reaches a certain size threshold.
+**
+** See also: [sqlite3_wal_checkpoint_v2()]
*/
SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb);
/*
+** CAPI3REF: Checkpoint a database
+**
+** Run a checkpoint operation on WAL database zDb attached to database
+** handle db. The specific operation is determined by the value of the
+** eMode parameter:
+**
+** <dl>
+** <dt>SQLITE_CHECKPOINT_PASSIVE<dd>
+** Checkpoint as many frames as possible without waiting for any database
+** readers or writers to finish. Sync the db file if all frames in the log
+** are checkpointed. This mode is the same as calling
+** sqlite3_wal_checkpoint(). The busy-handler callback is never invoked.
+**
+** <dt>SQLITE_CHECKPOINT_FULL<dd>
+** This mode blocks (calls the busy-handler callback) until there is no
+** database writer and all readers are reading from the most recent database
+** snapshot. It then checkpoints all frames in the log file and syncs the
+** database file. This call blocks database writers while it is running,
+** but not database readers.
+**
+** <dt>SQLITE_CHECKPOINT_RESTART<dd>
+** This mode works the same way as SQLITE_CHECKPOINT_FULL, except after
+** checkpointing the log file it blocks (calls the busy-handler callback)
+** until all readers are reading from the database file only. This ensures
+** that the next client to write to the database file restarts the log file
+** from the beginning. This call blocks database writers while it is running,
+** but not database readers.
+** </dl>
+**
+** If pnLog is not NULL, then *pnLog is set to the total number of frames in
+** the log file before returning. If pnCkpt is not NULL, then *pnCkpt is set to
+** the total number of checkpointed frames (including any that were already
+** checkpointed when this function is called). *pnLog and *pnCkpt may be
+** populated even if sqlite3_wal_checkpoint_v2() returns other than SQLITE_OK.
+** If no values are available because of an error, they are both set to -1
+** before returning to communicate this to the caller.
+**
+** All calls obtain an exclusive "checkpoint" lock on the database file. If
+** any other process is running a checkpoint operation at the same time, the
+** lock cannot be obtained and SQLITE_BUSY is returned. Even if there is a
+** busy-handler configured, it will not be invoked in this case.
+**
+** The SQLITE_CHECKPOINT_FULL and RESTART modes also obtain the exclusive
+** "writer" lock on the database file. If the writer lock cannot be obtained
+** immediately, and a busy-handler is configured, it is invoked and the writer
+** lock retried until either the busy-handler returns 0 or the lock is
+** successfully obtained. The busy-handler is also invoked while waiting for
+** database readers as described above. If the busy-handler returns 0 before
+** the writer lock is obtained or while waiting for database readers, the
+** checkpoint operation proceeds from that point in the same way as
+** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible
+** without blocking any further. SQLITE_BUSY is returned in this case.
+**
+** If parameter zDb is NULL or points to a zero length string, then the
+** specified operation is attempted on all WAL databases. In this case the
+** values written to output parameters *pnLog and *pnCkpt are undefined. If
+** an SQLITE_BUSY error is encountered when processing one or more of the
+** attached WAL databases, the operation is still attempted on any remaining
+** attached databases and SQLITE_BUSY is returned to the caller. If any other
+** error occurs while processing an attached database, processing is abandoned
+** and the error code returned to the caller immediately. If no error
+** (SQLITE_BUSY or otherwise) is encountered while processing the attached
+** databases, SQLITE_OK is returned.
+**
+** If database zDb is the name of an attached database that is not in WAL
+** mode, SQLITE_OK is returned and both *pnLog and *pnCkpt set to -1. If
+** zDb is not NULL (or a zero length string) and is not the name of any
+** attached database, SQLITE_ERROR is returned to the caller.
+*/
+SQLITE_API int sqlite3_wal_checkpoint_v2(
+ sqlite3 *db, /* Database handle */
+ const char *zDb, /* Name of attached database (or NULL) */
+ int eMode, /* SQLITE_CHECKPOINT_* value */
+ int *pnLog, /* OUT: Size of WAL log in frames */
+ int *pnCkpt /* OUT: Total number of frames checkpointed */
+);
+
+/*
+** CAPI3REF: Checkpoint operation parameters
+**
+** These constants can be used as the 3rd parameter to
+** [sqlite3_wal_checkpoint_v2()]. See the [sqlite3_wal_checkpoint_v2()]
+** documentation for additional information about the meaning and use of
+** each of these values.
+*/
+#define SQLITE_CHECKPOINT_PASSIVE 0
+#define SQLITE_CHECKPOINT_FULL 1
+#define SQLITE_CHECKPOINT_RESTART 2
+
+/*
+** CAPI3REF: Virtual Table Interface Configuration
+**
+** This function may be called by either the [xConnect] or [xCreate] method
+** of a [virtual table] implementation to configure
+** various facets of the virtual table interface.
+**
+** If this interface is invoked outside the context of an xConnect or
+** xCreate virtual table method then the behavior is undefined.
+**
+** At present, there is only one option that may be configured using
+** this function. (See [SQLITE_VTAB_CONSTRAINT_SUPPORT].) Further options
+** may be added in the future.
+*/
+SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...);
+
+/*
+** CAPI3REF: Virtual Table Configuration Options
+**
+** These macros define the various options to the
+** [sqlite3_vtab_config()] interface that [virtual table] implementations
+** can use to customize and optimize their behavior.
+**
+** <dl>
+** <dt>SQLITE_VTAB_CONSTRAINT_SUPPORT
+** <dd>Calls of the form
+** [sqlite3_vtab_config](db,SQLITE_VTAB_CONSTRAINT_SUPPORT,X) are supported,
+** where X is an integer. If X is zero, then the [virtual table] whose
+** [xCreate] or [xConnect] method invoked [sqlite3_vtab_config()] does not
+** support constraints. In this configuration (which is the default) if
+** a call to the [xUpdate] method returns [SQLITE_CONSTRAINT], then the entire
+** statement is rolled back as if [ON CONFLICT | OR ABORT] had been
+** specified as part of the users SQL statement, regardless of the actual
+** ON CONFLICT mode specified.
+**
+** If X is non-zero, then the virtual table implementation guarantees
+** that if [xUpdate] returns [SQLITE_CONSTRAINT], it will do so before
+** any modifications to internal or persistent data structures have been made.
+** If the [ON CONFLICT] mode is ABORT, FAIL, IGNORE or ROLLBACK, SQLite
+** is able to roll back a statement or database transaction, and abandon
+** or continue processing the current SQL statement as appropriate.
+** If the ON CONFLICT mode is REPLACE and the [xUpdate] method returns
+** [SQLITE_CONSTRAINT], SQLite handles this as if the ON CONFLICT mode
+** had been ABORT.
+**
+** Virtual table implementations that are required to handle OR REPLACE
+** must do so within the [xUpdate] method. If a call to the
+** [sqlite3_vtab_on_conflict()] function indicates that the current ON
+** CONFLICT policy is REPLACE, the virtual table implementation should
+** silently replace the appropriate rows within the xUpdate callback and
+** return SQLITE_OK. Or, if this is not possible, it may return
+** SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT
+** constraint handling.
+** </dl>
+*/
+#define SQLITE_VTAB_CONSTRAINT_SUPPORT 1
+
+/*
+** CAPI3REF: Determine The Virtual Table Conflict Policy
+**
+** This function may only be called from within a call to the [xUpdate] method
+** of a [virtual table] implementation for an INSERT or UPDATE operation. ^The
+** value returned is one of [SQLITE_ROLLBACK], [SQLITE_IGNORE], [SQLITE_FAIL],
+** [SQLITE_ABORT], or [SQLITE_REPLACE], according to the [ON CONFLICT] mode
+** of the SQL statement that triggered the call to the [xUpdate] method of the
+** [virtual table].
+*/
+SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *);
+
+/*
+** CAPI3REF: Conflict resolution modes
+**
+** These constants are returned by [sqlite3_vtab_on_conflict()] to
+** inform a [virtual table] implementation what the [ON CONFLICT] mode
+** is for the SQL statement being evaluated.
+**
+** Note that the [SQLITE_IGNORE] constant is also used as a potential
+** return value from the [sqlite3_set_authorizer()] callback and that
+** [SQLITE_ABORT] is also a [result code].
+*/
+#define SQLITE_ROLLBACK 1
+/* #define SQLITE_IGNORE 2 // Also used by sqlite3_authorizer() callback */
+#define SQLITE_FAIL 3
+/* #define SQLITE_ABORT 4 // Also an error code */
+#define SQLITE_REPLACE 5
+
+
+
+/*
** Undo the hack that converts floating point types to integer for
** builds on processors without floating point support.
*/
@@ -7115,7 +7808,7 @@
*/
#define SQLITE_MAX_FILE_FORMAT 4
#ifndef SQLITE_DEFAULT_FILE_FORMAT
-# define SQLITE_DEFAULT_FILE_FORMAT 1
+# define SQLITE_DEFAULT_FILE_FORMAT 4
#endif
/*
@@ -7214,6 +7907,18 @@
#define SQLITE_MAX_U32 ((((u64)1)<<32)-1)
/*
+** The datatype used to store estimates of the number of rows in a
+** table or index. This is an unsigned integer type. For 99.9% of
+** the world, a 32-bit integer is sufficient. But a 64-bit integer
+** can be used at compile-time if desired.
+*/
+#ifdef SQLITE_64BIT_STATS
+ typedef u64 tRowcnt; /* 64-bit only if requested at compile-time */
+#else
+ typedef u32 tRowcnt; /* 32-bit is the default */
+#endif
+
+/*
** Macros to determine whether the machine is big or little endian,
** evaluated at runtime.
*/
@@ -7400,6 +8105,7 @@
typedef struct TriggerStep TriggerStep;
typedef struct UnpackedRecord UnpackedRecord;
typedef struct VTable VTable;
+typedef struct VtabCtx VtabCtx;
typedef struct Walker Walker;
typedef struct WherePlan WherePlan;
typedef struct WhereInfo WhereInfo;
@@ -7453,21 +8159,10 @@
typedef struct Btree Btree;
typedef struct BtCursor BtCursor;
typedef struct BtShared BtShared;
-typedef struct BtreeMutexArray BtreeMutexArray;
-
-/*
-** This structure records all of the Btrees that need to hold
-** a mutex before we enter sqlite3VdbeExec(). The Btrees are
-** are placed in aBtree[] in order of aBtree[]->pBt. That way,
-** we can always lock and unlock them all quickly.
-*/
-struct BtreeMutexArray {
- int nMutex;
- Btree *aBtree[SQLITE_MAX_ATTACHED+1];
-};
SQLITE_PRIVATE int sqlite3BtreeOpen(
+ sqlite3_vfs *pVfs, /* VFS to use with this b-tree */
const char *zFilename, /* Name of database file to open */
sqlite3 *db, /* Associated database connection */
Btree **ppBtree, /* Return open Btree* here */
@@ -7501,7 +8196,7 @@
SQLITE_PRIVATE int sqlite3BtreeGetAutoVacuum(Btree *);
SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree*,int);
SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree*, const char *zMaster);
-SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree*);
+SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree*, int);
SQLITE_PRIVATE int sqlite3BtreeCommit(Btree*);
SQLITE_PRIVATE int sqlite3BtreeRollback(Btree*);
SQLITE_PRIVATE int sqlite3BtreeBeginStmt(Btree*,int);
@@ -7621,7 +8316,7 @@
#endif
#ifndef SQLITE_OMIT_WAL
-SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree*);
+SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree*, int, int *, int *);
#endif
/*
@@ -7638,30 +8333,28 @@
#endif
#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE
+SQLITE_PRIVATE int sqlite3BtreeSharable(Btree*);
SQLITE_PRIVATE void sqlite3BtreeLeave(Btree*);
SQLITE_PRIVATE void sqlite3BtreeEnterCursor(BtCursor*);
SQLITE_PRIVATE void sqlite3BtreeLeaveCursor(BtCursor*);
SQLITE_PRIVATE void sqlite3BtreeLeaveAll(sqlite3*);
-SQLITE_PRIVATE void sqlite3BtreeMutexArrayEnter(BtreeMutexArray*);
-SQLITE_PRIVATE void sqlite3BtreeMutexArrayLeave(BtreeMutexArray*);
-SQLITE_PRIVATE void sqlite3BtreeMutexArrayInsert(BtreeMutexArray*, Btree*);
#ifndef NDEBUG
/* These routines are used inside assert() statements only. */
SQLITE_PRIVATE int sqlite3BtreeHoldsMutex(Btree*);
SQLITE_PRIVATE int sqlite3BtreeHoldsAllMutexes(sqlite3*);
+SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3*,int,Schema*);
#endif
#else
+# define sqlite3BtreeSharable(X) 0
# define sqlite3BtreeLeave(X)
# define sqlite3BtreeEnterCursor(X)
# define sqlite3BtreeLeaveCursor(X)
# define sqlite3BtreeLeaveAll(X)
-# define sqlite3BtreeMutexArrayEnter(X)
-# define sqlite3BtreeMutexArrayLeave(X)
-# define sqlite3BtreeMutexArrayInsert(X,Y)
# define sqlite3BtreeHoldsMutex(X) 1
# define sqlite3BtreeHoldsAllMutexes(X) 1
+# define sqlite3SchemaMutexHeld(X,Y,Z) 1
#endif
@@ -7690,6 +8383,7 @@
*/
#ifndef _SQLITE_VDBE_H_
#define _SQLITE_VDBE_H_
+/* #include <stdio.h> */
/*
** A single VDBE is an opaque structure named "Vdbe". Only routines
@@ -7733,6 +8427,7 @@
KeyInfo *pKeyInfo; /* Used when p4type is P4_KEYINFO */
int *ai; /* Used when p4type is P4_INTARRAY */
SubProgram *pProgram; /* Used when p4type is P4_SUBPROGRAM */
+ int (*xAdvance)(BtCursor *, int *);
} p4;
#ifdef SQLITE_DEBUG
char *zComment; /* Comment to improve readability */
@@ -7753,6 +8448,7 @@
int nOp; /* Elements in aOp[] */
int nMem; /* Number of memory cells required */
int nCsr; /* Number of cursors required */
+ int nOnce; /* Number of OP_Once instructions */
void *token; /* id that may be used to recursive triggers */
SubProgram *pNext; /* Next sub-program already visited */
};
@@ -7780,7 +8476,7 @@
#define P4_KEYINFO (-6) /* P4 is a pointer to a KeyInfo structure */
#define P4_VDBEFUNC (-7) /* P4 is a pointer to a VdbeFunc structure */
#define P4_MEM (-8) /* P4 is a pointer to a Mem* structure */
-#define P4_TRANSIENT (-9) /* P4 is a pointer to a transient string */
+#define P4_TRANSIENT 0 /* P4 is a pointer to a transient string */
#define P4_VTAB (-10) /* P4 is a pointer to an sqlite3_vtab structure */
#define P4_MPRINTF (-11) /* P4 is a string obtained from sqlite3_mprintf() */
#define P4_REAL (-12) /* P4 is a 64-bit floating point value */
@@ -7788,6 +8484,7 @@
#define P4_INT32 (-14) /* P4 is a 32-bit signed integer */
#define P4_INTARRAY (-15) /* P4 is a vector of 32-bit integers */
#define P4_SUBPROGRAM (-18) /* P4 is a pointer to a SubProgram structure */
+#define P4_ADVANCE (-19) /* P4 is a pointer to BtreeNext() or BtreePrev() */
/* When adding a P4 argument using P4_KEYINFO, a copy of the KeyInfo structure
** is made. That copy is freed when the Vdbe is finalized. But if the
@@ -7885,102 +8582,105 @@
#define OP_Or 68 /* same as TK_OR */
#define OP_Not 19 /* same as TK_NOT */
#define OP_BitNot 93 /* same as TK_BITNOT */
-#define OP_If 26
-#define OP_IfNot 27
+#define OP_Once 26
+#define OP_If 27
+#define OP_IfNot 28
#define OP_IsNull 73 /* same as TK_ISNULL */
#define OP_NotNull 74 /* same as TK_NOTNULL */
-#define OP_Column 28
-#define OP_Affinity 29
-#define OP_MakeRecord 30
-#define OP_Count 31
-#define OP_Savepoint 32
-#define OP_AutoCommit 33
-#define OP_Transaction 34
-#define OP_ReadCookie 35
-#define OP_SetCookie 36
-#define OP_VerifyCookie 37
-#define OP_OpenRead 38
-#define OP_OpenWrite 39
-#define OP_OpenAutoindex 40
-#define OP_OpenEphemeral 41
-#define OP_OpenPseudo 42
-#define OP_Close 43
-#define OP_SeekLt 44
-#define OP_SeekLe 45
-#define OP_SeekGe 46
-#define OP_SeekGt 47
-#define OP_Seek 48
-#define OP_NotFound 49
-#define OP_Found 50
-#define OP_IsUnique 51
-#define OP_NotExists 52
-#define OP_Sequence 53
-#define OP_NewRowid 54
-#define OP_Insert 55
-#define OP_InsertInt 56
-#define OP_Delete 57
-#define OP_ResetCount 58
-#define OP_RowKey 59
-#define OP_RowData 60
-#define OP_Rowid 61
-#define OP_NullRow 62
-#define OP_Last 63
-#define OP_Sort 64
-#define OP_Rewind 65
-#define OP_Prev 66
-#define OP_Next 67
-#define OP_IdxInsert 70
-#define OP_IdxDelete 71
-#define OP_IdxRowid 72
-#define OP_IdxLT 81
-#define OP_IdxGE 92
-#define OP_Destroy 95
-#define OP_Clear 96
-#define OP_CreateIndex 97
-#define OP_CreateTable 98
-#define OP_ParseSchema 99
-#define OP_LoadAnalysis 100
-#define OP_DropTable 101
-#define OP_DropIndex 102
-#define OP_DropTrigger 103
-#define OP_IntegrityCk 104
-#define OP_RowSetAdd 105
-#define OP_RowSetRead 106
-#define OP_RowSetTest 107
-#define OP_Program 108
-#define OP_Param 109
-#define OP_FkCounter 110
-#define OP_FkIfZero 111
-#define OP_MemMax 112
-#define OP_IfPos 113
-#define OP_IfNeg 114
-#define OP_IfZero 115
-#define OP_AggStep 116
-#define OP_AggFinal 117
-#define OP_Checkpoint 118
-#define OP_JournalMode 119
-#define OP_Vacuum 120
-#define OP_IncrVacuum 121
-#define OP_Expire 122
-#define OP_TableLock 123
-#define OP_VBegin 124
-#define OP_VCreate 125
-#define OP_VDestroy 126
-#define OP_VOpen 127
-#define OP_VFilter 128
-#define OP_VColumn 129
-#define OP_VNext 131
-#define OP_VRename 132
-#define OP_VUpdate 133
-#define OP_Pagecount 134
-#define OP_MaxPgcnt 135
-#define OP_Trace 136
-#define OP_Noop 137
-#define OP_Explain 138
-
-/* The following opcode values are never used */
-#define OP_NotUsed_139 139
-#define OP_NotUsed_140 140
+#define OP_Column 29
+#define OP_Affinity 30
+#define OP_MakeRecord 31
+#define OP_Count 32
+#define OP_Savepoint 33
+#define OP_AutoCommit 34
+#define OP_Transaction 35
+#define OP_ReadCookie 36
+#define OP_SetCookie 37
+#define OP_VerifyCookie 38
+#define OP_OpenRead 39
+#define OP_OpenWrite 40
+#define OP_OpenAutoindex 41
+#define OP_OpenEphemeral 42
+#define OP_SorterOpen 43
+#define OP_OpenPseudo 44
+#define OP_Close 45
+#define OP_SeekLt 46
+#define OP_SeekLe 47
+#define OP_SeekGe 48
+#define OP_SeekGt 49
+#define OP_Seek 50
+#define OP_NotFound 51
+#define OP_Found 52
+#define OP_IsUnique 53
+#define OP_NotExists 54
+#define OP_Sequence 55
+#define OP_NewRowid 56
+#define OP_Insert 57
+#define OP_InsertInt 58
+#define OP_Delete 59
+#define OP_ResetCount 60
+#define OP_SorterCompare 61
+#define OP_SorterData 62
+#define OP_RowKey 63
+#define OP_RowData 64
+#define OP_Rowid 65
+#define OP_NullRow 66
+#define OP_Last 67
+#define OP_SorterSort 70
+#define OP_Sort 71
+#define OP_Rewind 72
+#define OP_SorterNext 81
+#define OP_Prev 92
+#define OP_Next 95
+#define OP_SorterInsert 96
+#define OP_IdxInsert 97
+#define OP_IdxDelete 98
+#define OP_IdxRowid 99
+#define OP_IdxLT 100
+#define OP_IdxGE 101
+#define OP_Destroy 102
+#define OP_Clear 103
+#define OP_CreateIndex 104
+#define OP_CreateTable 105
+#define OP_ParseSchema 106
+#define OP_LoadAnalysis 107
+#define OP_DropTable 108
+#define OP_DropIndex 109
+#define OP_DropTrigger 110
+#define OP_IntegrityCk 111
+#define OP_RowSetAdd 112
+#define OP_RowSetRead 113
+#define OP_RowSetTest 114
+#define OP_Program 115
+#define OP_Param 116
+#define OP_FkCounter 117
+#define OP_FkIfZero 118
+#define OP_MemMax 119
+#define OP_IfPos 120
+#define OP_IfNeg 121
+#define OP_IfZero 122
+#define OP_AggStep 123
+#define OP_AggFinal 124
+#define OP_Checkpoint 125
+#define OP_JournalMode 126
+#define OP_Vacuum 127
+#define OP_IncrVacuum 128
+#define OP_Expire 129
+#define OP_TableLock 131
+#define OP_VBegin 132
+#define OP_VCreate 133
+#define OP_VDestroy 134
+#define OP_VOpen 135
+#define OP_VFilter 136
+#define OP_VColumn 137
+#define OP_VNext 138
+#define OP_VRename 139
+#define OP_VUpdate 140
+#define OP_Pagecount 146
+#define OP_MaxPgcnt 147
+#define OP_Trace 148
+#define OP_Noop 149
+#define OP_Explain 150
/* Properties such as "out2" or "jump" that are specified in
@@ -7995,25 +8695,25 @@
#define OPFLG_OUT2 0x0020 /* out2: P2 is an output */
#define OPFLG_OUT3 0x0040 /* out3: P3 is an output */
#define OPFLG_INITIALIZER {\
-/* 0 */ 0x00, 0x01, 0x05, 0x04, 0x04, 0x10, 0x00, 0x02,\
+/* 0 */ 0x00, 0x01, 0x01, 0x04, 0x04, 0x10, 0x00, 0x02,\
/* 8 */ 0x02, 0x02, 0x02, 0x02, 0x02, 0x00, 0x24, 0x24,\
/* 16 */ 0x00, 0x00, 0x00, 0x24, 0x04, 0x05, 0x04, 0x00,\
-/* 24 */ 0x00, 0x01, 0x05, 0x05, 0x00, 0x00, 0x00, 0x02,\
-/* 32 */ 0x00, 0x00, 0x00, 0x02, 0x10, 0x00, 0x00, 0x00,\
-/* 40 */ 0x00, 0x00, 0x00, 0x00, 0x11, 0x11, 0x11, 0x11,\
-/* 48 */ 0x08, 0x11, 0x11, 0x11, 0x11, 0x02, 0x02, 0x00,\
-/* 56 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01,\
-/* 64 */ 0x01, 0x01, 0x01, 0x01, 0x4c, 0x4c, 0x08, 0x00,\
-/* 72 */ 0x02, 0x05, 0x05, 0x15, 0x15, 0x15, 0x15, 0x15,\
+/* 24 */ 0x00, 0x01, 0x01, 0x05, 0x05, 0x00, 0x00, 0x00,\
+/* 32 */ 0x02, 0x00, 0x00, 0x00, 0x02, 0x10, 0x00, 0x00,\
+/* 40 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x11,\
+/* 48 */ 0x11, 0x11, 0x08, 0x11, 0x11, 0x11, 0x11, 0x02,\
+/* 56 */ 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
+/* 64 */ 0x00, 0x02, 0x00, 0x01, 0x4c, 0x4c, 0x01, 0x01,\
+/* 72 */ 0x01, 0x05, 0x05, 0x15, 0x15, 0x15, 0x15, 0x15,\
/* 80 */ 0x15, 0x01, 0x4c, 0x4c, 0x4c, 0x4c, 0x4c, 0x4c,\
-/* 88 */ 0x4c, 0x4c, 0x4c, 0x4c, 0x01, 0x24, 0x02, 0x02,\
-/* 96 */ 0x00, 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,\
-/* 104 */ 0x00, 0x0c, 0x45, 0x15, 0x01, 0x02, 0x00, 0x01,\
-/* 112 */ 0x08, 0x05, 0x05, 0x05, 0x00, 0x00, 0x00, 0x02,\
-/* 120 */ 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
-/* 128 */ 0x01, 0x00, 0x02, 0x01, 0x00, 0x00, 0x02, 0x02,\
-/* 136 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04,\
-/* 144 */ 0x04, 0x04,}
+/* 88 */ 0x4c, 0x4c, 0x4c, 0x4c, 0x01, 0x24, 0x02, 0x01,\
+/* 96 */ 0x08, 0x08, 0x00, 0x02, 0x01, 0x01, 0x02, 0x00,\
+/* 104 */ 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
+/* 112 */ 0x0c, 0x45, 0x15, 0x01, 0x02, 0x00, 0x01, 0x08,\
+/* 120 */ 0x05, 0x05, 0x05, 0x00, 0x00, 0x00, 0x02, 0x00,\
+/* 128 */ 0x01, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,\
+/* 136 */ 0x01, 0x00, 0x01, 0x00, 0x00, 0x04, 0x04, 0x04,\
+/* 144 */ 0x04, 0x04, 0x02, 0x02, 0x00, 0x00, 0x00,}
/************** End of opcodes.h *********************************************/
/************** Continuing where we left off in vdbe.h ***********************/
@@ -8030,12 +8730,13 @@
SQLITE_PRIVATE int sqlite3VdbeAddOp4(Vdbe*,int,int,int,int,const char *zP4,int);
SQLITE_PRIVATE int sqlite3VdbeAddOp4Int(Vdbe*,int,int,int,int,int);
SQLITE_PRIVATE int sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp);
-SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, int addr, int P1);
-SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, int addr, int P2);
-SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, int addr, int P3);
+SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*);
+SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, u32 addr, int P1);
+SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, u32 addr, int P2);
+SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, u32 addr, int P3);
SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe*, u8 P5);
SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe*, int addr);
-SQLITE_PRIVATE void sqlite3VdbeChangeToNoop(Vdbe*, int addr, int N);
+SQLITE_PRIVATE void sqlite3VdbeChangeToNoop(Vdbe*, int addr);
SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe*, int addr, const char *zP4, int N);
SQLITE_PRIVATE void sqlite3VdbeUsesBtree(Vdbe*, int);
SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetOp(Vdbe*, int);
@@ -8043,7 +8744,7 @@
SQLITE_PRIVATE void sqlite3VdbeRunOnlyOnce(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeDeleteObject(sqlite3*,Vdbe*);
-SQLITE_PRIVATE void sqlite3VdbeMakeReady(Vdbe*,int,int,int,int,int,int);
+SQLITE_PRIVATE void sqlite3VdbeMakeReady(Vdbe*,Parse*);
SQLITE_PRIVATE int sqlite3VdbeFinalize(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeResolveLabel(Vdbe*, int);
SQLITE_PRIVATE int sqlite3VdbeCurrentAddr(Vdbe*);
@@ -8052,6 +8753,7 @@
SQLITE_PRIVATE void sqlite3VdbeTrace(Vdbe*,FILE*);
#endif
SQLITE_PRIVATE void sqlite3VdbeResetStepResult(Vdbe*);
+SQLITE_PRIVATE void sqlite3VdbeRewind(Vdbe*);
SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeSetNumCols(Vdbe*,int);
SQLITE_PRIVATE int sqlite3VdbeSetColName(Vdbe*, int, int, const char *, void(*)(void*));
@@ -8066,9 +8768,9 @@
SQLITE_PRIVATE char *sqlite3VdbeExpandSql(Vdbe*, const char*);
#endif
-SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeRecordUnpack(KeyInfo*,int,const void*,char*,int);
-SQLITE_PRIVATE void sqlite3VdbeDeleteUnpackedRecord(UnpackedRecord*);
+SQLITE_PRIVATE void sqlite3VdbeRecordUnpack(KeyInfo*,int,const void*,UnpackedRecord*);
SQLITE_PRIVATE int sqlite3VdbeRecordCompare(int,const void*,UnpackedRecord*);
+SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeAllocUnpackedRecord(KeyInfo *, char *, int, char **);
#ifndef SQLITE_OMIT_TRIGGER
SQLITE_PRIVATE void sqlite3VdbeLinkSubProgram(Vdbe *, SubProgram *);
@@ -8196,6 +8898,7 @@
SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager*, u32*, int);
SQLITE_PRIVATE int sqlite3PagerMaxPageCount(Pager*, int);
SQLITE_PRIVATE void sqlite3PagerSetCachesize(Pager*, int);
+SQLITE_PRIVATE void sqlite3PagerShrink(Pager*);
SQLITE_PRIVATE void sqlite3PagerSetSafetyLevel(Pager*,int,int,int);
SQLITE_PRIVATE int sqlite3PagerLockingMode(Pager *, int);
SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *, int);
@@ -8231,7 +8934,7 @@
SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint);
SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager);
-SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager);
+SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager, int, int*, int*);
SQLITE_PRIVATE int sqlite3PagerWalSupported(Pager *pPager);
SQLITE_PRIVATE int sqlite3PagerWalCallback(Pager *pPager);
SQLITE_PRIVATE int sqlite3PagerOpenWal(Pager *pPager, int *pisOpen);
@@ -8248,6 +8951,8 @@
SQLITE_PRIVATE int sqlite3PagerNosync(Pager*);
SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager*);
SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager*);
+SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *, int, int, int *);
+SQLITE_PRIVATE void sqlite3PagerClearCache(Pager *);
/* Functions used to truncate the database file. */
SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager*,Pgno);
@@ -8302,7 +9007,8 @@
** structure.
*/
struct PgHdr {
- void *pData; /* Content of this page */
+ sqlite3_pcache_page *pPage; /* Pcache object page handle */
+ void *pData; /* Page data */
void *pExtra; /* Extra content */
PgHdr *pDirty; /* Transient list of dirty pages */
Pgno pgno; /* Page number for this page */
@@ -8420,6 +9126,9 @@
SQLITE_PRIVATE int sqlite3PcacheGetCachesize(PCache *);
#endif
+/* Free up as much memory as possible from the page cache */
+SQLITE_PRIVATE void sqlite3PcacheShrink(PCache*);
+
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
/* Try to return memory used by the pcache module to the main memory heap */
SQLITE_PRIVATE int sqlite3PcacheReleaseMemory(int);
@@ -8506,17 +9215,6 @@
#endif
/*
-** Determine if we are dealing with WindowsCE - which has a much
-** reduced API.
-*/
-#if defined(_WIN32_WCE)
-# define SQLITE_OS_WINCE 1
-#else
-# define SQLITE_OS_WINCE 0
-#endif
-
-
-/*
** Define the maximum size of a temporary filename
*/
#if SQLITE_OS_WIN
@@ -8540,6 +9238,25 @@
# define SQLITE_TEMPNAME_SIZE 200
#endif
+/*
+** Determine if we are dealing with Windows NT.
+*/
+#if defined(_WIN32_WINNT)
+# define SQLITE_OS_WINNT 1
+#else
+# define SQLITE_OS_WINNT 0
+#endif
+
+/*
+** Determine if we are dealing with WindowsCE - which has a much
+** reduced API.
+*/
+#if defined(_WIN32_WCE)
+# define SQLITE_OS_WINCE 1
+#else
+# define SQLITE_OS_WINCE 0
+#endif
+
/* If the SET_FULLSYNC macro is not defined above, then make it
** a no-op
*/
@@ -8551,7 +9268,7 @@
** The default size of a disk sector
*/
#ifndef SQLITE_DEFAULT_SECTOR_SIZE
-# define SQLITE_DEFAULT_SECTOR_SIZE 512
+# define SQLITE_DEFAULT_SECTOR_SIZE 4096
#endif
/*
@@ -8684,6 +9401,7 @@
SQLITE_PRIVATE int sqlite3OsUnlock(sqlite3_file*, int);
SQLITE_PRIVATE int sqlite3OsCheckReservedLock(sqlite3_file *id, int *pResOut);
SQLITE_PRIVATE int sqlite3OsFileControl(sqlite3_file*,int,void*);
+SQLITE_PRIVATE void sqlite3OsFileControlHint(sqlite3_file*,int,void*);
#define SQLITE_FCNTL_DB_UNCHANGED 0xca093fa0
SQLITE_PRIVATE int sqlite3OsSectorSize(sqlite3_file *id);
SQLITE_PRIVATE int sqlite3OsDeviceCharacteristics(sqlite3_file *id);
@@ -8692,6 +9410,7 @@
SQLITE_PRIVATE void sqlite3OsShmBarrier(sqlite3_file *id);
SQLITE_PRIVATE int sqlite3OsShmUnmap(sqlite3_file *id, int);
+
/*
** Functions for accessing sqlite3_vfs methods
*/
@@ -8784,14 +9503,17 @@
*/
#define sqlite3_mutex_alloc(X) ((sqlite3_mutex*)8)
#define sqlite3_mutex_free(X)
-#define sqlite3_mutex_enter(X)
+#define sqlite3_mutex_enter(X)
#define sqlite3_mutex_try(X) SQLITE_OK
-#define sqlite3_mutex_leave(X)
+#define sqlite3_mutex_leave(X)
#define sqlite3_mutex_held(X) ((void)(X),1)
#define sqlite3_mutex_notheld(X) ((void)(X),1)
#define sqlite3MutexAlloc(X) ((sqlite3_mutex*)8)
#define sqlite3MutexInit() SQLITE_OK
#define sqlite3MutexEnd()
+#define MUTEX_LOGIC(X)
+#else
+#define MUTEX_LOGIC(X) X
#endif /* defined(SQLITE_MUTEX_OMIT) */
/************** End of mutex.h ***********************************************/
@@ -8815,9 +9537,24 @@
/*
** An instance of the following structure stores a database schema.
+**
+** Most Schema objects are associated with a Btree. The exception is
+** the Schema for the TEMP databaes (sqlite3.aDb[1]) which is free-standing.
+** In shared cache mode, a single Schema object can be shared by multiple
+** Btrees that refer to the same underlying BtShared object.
+**
+** Schema objects are automatically deallocated when the last Btree that
+** references them is destroyed. The TEMP Schema is manually freed by
+** sqlite3_close().
+*
+** A thread must be holding a mutex on the corresponding Btree in order
+** to access Schema content. This implies that the thread must also be
+** holding a mutex on the sqlite3 connection pointer that owns the Btree.
+** For a TEMP Schema, only the connection mutex is required.
*/
struct Schema {
int schema_cookie; /* Database schema version number for this file */
+ int iGeneration; /* Generation counter. Incremented with each change */
Hash tblHash; /* All tables indexed by name */
Hash idxHash; /* All (named) indices indexed by name */
Hash trigHash; /* All triggers indexed by name */
@@ -8884,6 +9621,7 @@
u8 bMalloced; /* True if pStart obtained from sqlite3_malloc() */
int nOut; /* Number of buffers currently checked out */
int mxOut; /* Highwater mark for nOut */
+ int anStat[3]; /* 0: hits. 1: size misses. 2: full misses */
LookasideSlot *pFree; /* List of available buffers */
void *pStart; /* First byte of available memory space */
void *pEnd; /* First byte past end of available space */
@@ -8933,7 +9671,7 @@
int nDb; /* Number of backends currently in use */
Db *aDb; /* All backends */
int flags; /* Miscellaneous flags. See below */
- int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */
+ unsigned int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */
int errCode; /* Most recent error code (SQLITE_*) */
int errMask; /* & result codes with this before returning */
u8 autoCommit; /* The auto-commit flag. */
@@ -8942,6 +9680,7 @@
u8 dfltLockMode; /* Default locking-mode for attached dbs */
signed char nextAutovac; /* Autovac setting after VACUUM if >=0 */
u8 suppressErr; /* Do not issue error messages if true */
+ u8 vtabOnConflict; /* Value to return for s3_vtab_on_conflict() */
int nextPagesize; /* Pagesize after VACUUM if >0 */
int nTable; /* Number of tables in the database */
CollSeq *pDfltColl; /* The default collating sequence (BINARY) */
@@ -8962,6 +9701,7 @@
struct Vdbe *pVdbe; /* List of active virtual machines */
int activeVdbeCnt; /* Number of VDBEs currently executing */
int writeVdbeCnt; /* Number of active VDBEs that are writing */
+ int vdbeExecCnt; /* Number of nested calls to VdbeExec() */
void (*xTrace)(void*,const char*); /* Trace function */
void *pTraceArg; /* Argument to the trace function */
void (*xProfile)(void*,const char*,u64); /* Profiling function */
@@ -8999,7 +9739,7 @@
#endif
#ifndef SQLITE_OMIT_VIRTUALTABLE
Hash aModule; /* populated by sqlite3_create_module() */
- Table *pVTab; /* vtab with active Connect/Create method */
+ VtabCtx *pVtabCtx; /* Context for active vtab connect/create */
VTable **aVTrans; /* Virtual tables with open transactions */
int nVTrans; /* Allocated size of aVTrans */
VTable *pDisconnect; /* Disconnect these in next sqlite3_prepare() */
@@ -9069,6 +9809,7 @@
#define SQLITE_AutoIndex 0x08000000 /* Enable automatic indexes */
#define SQLITE_PreferBuiltin 0x10000000 /* Preference to built-in funcs */
#define SQLITE_LoadExtension 0x20000000 /* Enable load_extension */
+#define SQLITE_EnableTrigger 0x40000000 /* True to enable triggers */
/*
** Bits of the sqlite3.flags field that are used by the
@@ -9082,6 +9823,8 @@
#define SQLITE_IndexCover 0x10 /* Disable index covering table */
#define SQLITE_GroupByOrder 0x20 /* Disable GROUPBY cover of ORDERBY */
#define SQLITE_FactorOutConst 0x40 /* Disable factoring out constants */
+#define SQLITE_IdxRealAsInt 0x80 /* Store REAL as INT in indices */
+#define SQLITE_DistinctOpt 0x80 /* DISTINCT using indexes */
#define SQLITE_OptMask 0xff /* Mask of all disablable opts */
/*
@@ -9258,21 +10001,12 @@
struct CollSeq {
char *zName; /* Name of the collating sequence, UTF-8 encoded */
u8 enc; /* Text encoding handled by xCmp() */
- u8 type; /* One of the SQLITE_COLL_... values below */
void *pUser; /* First argument to xCmp() */
int (*xCmp)(void*,int, const void*, int, const void*);
void (*xDel)(void*); /* Destructor for pUser */
};
/*
-** Allowed values of CollSeq.type:
-*/
-#define SQLITE_COLL_BINARY 1 /* The default memcmp() collating sequence */
-#define SQLITE_COLL_NOCASE 2 /* The built-in NOCASE collating sequence */
-#define SQLITE_COLL_REVERSE 3 /* The built-in REVERSE collating sequence */
-#define SQLITE_COLL_USER 0 /* Any other user-defined collating sequence */
-
-/*
** A sort order can be either ASC or DESC.
*/
#define SQLITE_SO_ASC 0 /* Sort in ascending order */
@@ -9327,7 +10061,7 @@
** schema is shared, as the implementation often stores the database
** connection handle passed to it via the xConnect() or xCreate() method
** during initialization internally. This database connection handle may
-** then used by the virtual table implementation to access real tables
+** then be used by the virtual table implementation to access real tables
** within the database. So that they appear as part of the callers
** transaction, these accesses need to be made via the same database
** connection as that used to execute SQL operations on the virtual table.
@@ -9361,6 +10095,8 @@
Module *pMod; /* Pointer to module implementation */
sqlite3_vtab *pVtab; /* Pointer to vtab instance */
int nRef; /* Number of pointers to this structure */
+ u8 bConstraint; /* True if constraints are supported */
+ int iSavepoint; /* Depth of the SAVEPOINT stack */
VTable *pNext; /* Next in linked list (see above) */
};
@@ -9401,7 +10137,7 @@
Column *aCol; /* Information about each column */
Index *pIndex; /* List of SQL indexes on this table. */
int tnum; /* Root BTree node for this table (see note above) */
- unsigned nRowEst; /* Estimated rows in table - from sqlite_stat1 table */
+ tRowcnt nRowEst; /* Estimated rows in table - from sqlite_stat1 table */
Select *pSelect; /* NULL for tables. Points to definition if a view. */
u16 nRef; /* Number of pointers to this Table */
u8 tabFlags; /* Mask of TF_* values */
@@ -9555,7 +10291,7 @@
struct UnpackedRecord {
KeyInfo *pKeyInfo; /* Collation and sort-order information */
u16 nField; /* Number of entries in apMem[] */
- u16 flags; /* Boolean settings. UNPACKED_... below */
+ u8 flags; /* Boolean settings. UNPACKED_... below */
i64 rowid; /* Used by UNPACKED_PREFIX_SEARCH */
Mem *aMem; /* Values */
};
@@ -9563,12 +10299,9 @@
/*
** Allowed values of UnpackedRecord.flags
*/
-#define UNPACKED_NEED_FREE 0x0001 /* Memory is from sqlite3Malloc() */
-#define UNPACKED_NEED_DESTROY 0x0002 /* apMem[]s should all be destroyed */
-#define UNPACKED_IGNORE_ROWID 0x0004 /* Ignore trailing rowid on key1 */
-#define UNPACKED_INCRKEY 0x0008 /* Make this key an epsilon larger */
-#define UNPACKED_PREFIX_MATCH 0x0010 /* A prefix match is considered OK */
-#define UNPACKED_PREFIX_SEARCH 0x0020 /* A prefix match is considered OK */
+#define UNPACKED_INCRKEY 0x01 /* Make this key an epsilon larger */
+#define UNPACKED_PREFIX_MATCH 0x02 /* A prefix match is considered OK */
+#define UNPACKED_PREFIX_SEARCH 0x04 /* Ignore final (rowid) field */
/*
** Each SQL index is represented in memory by an
@@ -9600,30 +10333,40 @@
char *zName; /* Name of this index */
int nColumn; /* Number of columns in the table used by this index */
int *aiColumn; /* Which columns are used by this index. 1st is 0 */
- unsigned *aiRowEst; /* Result of ANALYZE: Est. rows selected by each column */
+ tRowcnt *aiRowEst; /* Result of ANALYZE: Est. rows selected by each column */
Table *pTable; /* The SQL table being indexed */
int tnum; /* Page containing root of this index in database file */
u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */
u8 autoIndex; /* True if is automatically created (ex: by UNIQUE) */
+ u8 bUnordered; /* Use this index for == or IN queries only */
char *zColAff; /* String defining the affinity of each column */
Index *pNext; /* The next index associated with the same table */
Schema *pSchema; /* Schema containing this index */
u8 *aSortOrder; /* Array of size Index.nColumn. True==DESC, False==ASC */
char **azColl; /* Array of collation sequence names for index */
- IndexSample *aSample; /* Array of SQLITE_INDEX_SAMPLES samples */
+#ifdef SQLITE_ENABLE_STAT3
+ int nSample; /* Number of elements in aSample[] */
+ tRowcnt avgEq; /* Average nEq value for key values not in aSample */
+ IndexSample *aSample; /* Samples of the left-most key */
+#endif
};
/*
-** Each sample stored in the sqlite_stat2 table is represented in memory
-** using a structure of this type.
+** Each sample stored in the sqlite_stat3 table is represented in memory
+** using a structure of this type. See documentation at the top of the
+** analyze.c source file for additional information.
*/
struct IndexSample {
union {
char *z; /* Value if eType is SQLITE_TEXT or SQLITE_BLOB */
- double r; /* Value if eType is SQLITE_FLOAT or SQLITE_INTEGER */
+ double r; /* Value if eType is SQLITE_FLOAT */
+ i64 i; /* Value if eType is SQLITE_INTEGER */
} u;
u8 eType; /* SQLITE_NULL, SQLITE_INTEGER ... etc. */
- u8 nByte; /* Size in byte of text or blob. */
+ int nByte; /* Size in byte of text or blob. */
+ tRowcnt nEq; /* Est. number of rows where the key equals this sample */
+ tRowcnt nLt; /* Est. number of rows where key is less than this sample */
+ tRowcnt nDLt; /* Est. number of distinct keys less than this sample */
};
/*
@@ -9658,6 +10401,7 @@
u8 useSortingIdx; /* In direct mode, reference the sorting index rather
** than the source table */
int sortingIdx; /* Cursor number of the sorting index */
+ int sortingIdxPTab; /* Cursor number of pseudo-table */
ExprList *pGroupBy; /* The group by clause */
int nSortingColumn; /* Number of columns in the sorting index */
struct AggInfo_col { /* For each column used in source tables */
@@ -9768,7 +10512,7 @@
u16 flags; /* Various flags. EP_* See below */
union {
char *zToken; /* Token value. Zero terminated and dequoted */
- int iValue; /* Integer value if EP_IntValue */
+ int iValue; /* Non-negative integer value if EP_IntValue */
} u;
/* If the EP_TokenOnly flag is set in the Expr.flags mask, then no
@@ -9820,10 +10564,10 @@
#define EP_FixedDest 0x0200 /* Result needed in a specific register */
#define EP_IntValue 0x0400 /* Integer value contained in u.iValue */
#define EP_xIsSelect 0x0800 /* x.pSelect is valid (otherwise x.pList is) */
-
-#define EP_Reduced 0x1000 /* Expr struct is EXPR_REDUCEDSIZE bytes only */
-#define EP_TokenOnly 0x2000 /* Expr struct is EXPR_TOKENONLYSIZE bytes only */
-#define EP_Static 0x4000 /* Held in memory not obtained from malloc() */
+#define EP_Hint 0x1000 /* Optimizer hint. Not required for correctness */
+#define EP_Reduced 0x2000 /* Expr struct is EXPR_REDUCEDSIZE bytes only */
+#define EP_TokenOnly 0x4000 /* Expr struct is EXPR_TOKENONLYSIZE bytes only */
+#define EP_Static 0x8000 /* Held in memory not obtained from malloc() */
/*
** The following are the meanings of bits in the Expr.flags2 field.
@@ -9885,7 +10629,7 @@
char *zSpan; /* Original text of the expression */
u8 sortOrder; /* 1 for DESC or 0 for ASC */
u8 done; /* A flag to indicate when processing is finished */
- u16 iCol; /* For ORDER BY, column number in result set */
+ u16 iOrderByCol; /* For ORDER BY, column number in result set */
u16 iAlias; /* Index into Parse.aAlias[] for zName */
} *a; /* One entry for each expression */
};
@@ -9967,9 +10711,11 @@
char *zAlias; /* The "B" part of a "A AS B" phrase. zName is the "A" */
Table *pTab; /* An SQL table corresponding to zName */
Select *pSelect; /* A SELECT statement used in place of a table name */
- u8 isPopulated; /* Temporary table associated with SELECT is populated */
+ int addrFillSub; /* Address of subroutine to manifest a subquery */
+ int regReturn; /* Register holding return address of addrFillSub */
u8 jointype; /* Type of join between this able and the previous */
u8 notIndexed; /* True if there is a NOT INDEXED clause */
+ u8 isCorrelated; /* True if sub-query is correlated */
#ifndef SQLITE_OMIT_EXPLAIN
u8 iSelectId; /* If pSelect!=0, the id of the sub-select in EQP */
#endif
@@ -10072,10 +10818,10 @@
#define WHERE_ORDERBY_MAX 0x0002 /* ORDER BY processing for max() func */
#define WHERE_ONEPASS_DESIRED 0x0004 /* Want to do one-pass UPDATE/DELETE */
#define WHERE_DUPLICATES_OK 0x0008 /* Ok to return a row more than once */
-#define WHERE_OMIT_OPEN 0x0010 /* Table cursors are already open */
-#define WHERE_OMIT_CLOSE 0x0020 /* Omit close of table & index cursors */
-#define WHERE_FORCE_TABLE 0x0040 /* Do not use an index-only search */
-#define WHERE_ONETABLE_ONLY 0x0080 /* Only code the 1st table in pTabList */
+#define WHERE_OMIT_OPEN_CLOSE 0x0010 /* Table cursors are already open */
+#define WHERE_FORCE_TABLE 0x0020 /* Do not use an index-only search */
+#define WHERE_ONETABLE_ONLY 0x0040 /* Only code the 1st table in pTabList */
+#define WHERE_AND_ONLY 0x0080 /* Don't use indices for OR terms */
/*
** The WHERE clause processing routine has two halves. The
@@ -10089,6 +10835,7 @@
u16 wctrlFlags; /* Flags originally passed to sqlite3WhereBegin() */
u8 okOnePass; /* Ok to use one-pass algorithm for UPDATE or DELETE */
u8 untestedTerms; /* Not all WHERE terms resolved by outer loop */
+ u8 eDistinct;
SrcList *pTabList; /* List of tables in the join */
int iTop; /* The very beginning of the WHERE loop */
int iContinue; /* Jump here to continue with next record */
@@ -10100,6 +10847,9 @@
WhereLevel a[1]; /* Information about each nest loop in WHERE */
};
+#define WHERE_DISTINCT_UNIQUE 1
+#define WHERE_DISTINCT_ORDERED 2
+
/*
** A NameContext defines a context in which to resolve table and column
** names. The context consists of a list of tables (the pSrcList) field and
@@ -10179,12 +10929,13 @@
** Allowed values for Select.selFlags. The "SF" prefix stands for
** "Select Flag".
*/
-#define SF_Distinct 0x0001 /* Output should be DISTINCT */
-#define SF_Resolved 0x0002 /* Identifiers have been resolved */
-#define SF_Aggregate 0x0004 /* Contains aggregate functions */
-#define SF_UsesEphemeral 0x0008 /* Uses the OpenEphemeral opcode */
-#define SF_Expanded 0x0010 /* sqlite3SelectExpand() called on this */
-#define SF_HasTypeInfo 0x0020 /* FROM subqueries have Table metadata */
+#define SF_Distinct 0x01 /* Output should be DISTINCT */
+#define SF_Resolved 0x02 /* Identifiers have been resolved */
+#define SF_Aggregate 0x04 /* Contains aggregate functions */
+#define SF_UsesEphemeral 0x08 /* Uses the OpenEphemeral opcode */
+#define SF_Expanded 0x10 /* sqlite3SelectExpand() called on this */
+#define SF_HasTypeInfo 0x20 /* FROM subqueries have Table metadata */
+#define SF_UseSorter 0x40 /* Sort using a sorter */
/*
@@ -10269,6 +11020,15 @@
};
/*
+** The yDbMask datatype for the bitmask of all attached databases.
+*/
+#if SQLITE_MAX_ATTACHED>30
+ typedef sqlite3_uint64 yDbMask;
+#else
+ typedef unsigned int yDbMask;
+#endif
+
+/*
** An SQL parser context. A copy of this structure is passed through
** the parser and down into all the parser action routine in order to
** carry around information that is global to the entire parse.
@@ -10290,10 +11050,8 @@
char *zErrMsg; /* An error message */
Vdbe *pVdbe; /* An engine for executing database bytecode */
u8 colNamesSet; /* TRUE after OP_ColumnName has been issued to pVdbe */
- u8 nameClash; /* A permanent table name clashes with temp table name */
u8 checkSchema; /* Causes schema cookie check after an error */
u8 nested; /* Number of nested calls to the parser/code generator */
- u8 parseError; /* True after a parsing error. Ticket #1794 */
u8 nTempReg; /* Number of temporary registers in aTempReg[] */
u8 nTempInUse; /* Number of aTempReg[] currently checked out */
int aTempReg[8]; /* Holding area for temporary registers */
@@ -10303,11 +11061,12 @@
int nTab; /* Number of previously allocated VDBE cursors */
int nMem; /* Number of memory cells used so far */
int nSet; /* Number of sets used so far */
+ int nOnce; /* Number of OP_Once instructions so far */
int ckBase; /* Base register of data during check constraints */
int iCacheLevel; /* ColCache valid when aColCache[].iLevel<=iCacheLevel */
int iCacheCnt; /* Counter used to generate aColCache[].lru values */
- u8 nColCache; /* Number of entries in the column cache */
- u8 iColCache; /* Next entry of the cache to replace */
+ u8 nColCache; /* Number of entries in aColCache[] */
+ u8 iColCache; /* Next entry in aColCache[] to replace */
struct yColCache {
int iTable; /* Table cursor number */
int iColumn; /* Table column number */
@@ -10316,8 +11075,8 @@
int iReg; /* Reg with value of this column. 0 means none. */
int lru; /* Least recently used entry has the smallest value */
} aColCache[SQLITE_N_COLCACHE]; /* One for each column cache entry */
- u32 writeMask; /* Start a write transaction on these databases */
- u32 cookieMask; /* Bitmask of schema verified databases */
+ yDbMask writeMask; /* Start a write transaction on these databases */
+ yDbMask cookieMask; /* Bitmask of schema verified databases */
u8 isMultiWrite; /* True if statement may affect/insert multiple rows */
u8 mayAbort; /* True if statement may throw an ABORT exception */
int cookieGoto; /* Address of OP_Goto to cookie verifier subroutine */
@@ -10345,12 +11104,10 @@
** each recursion */
int nVar; /* Number of '?' variables seen in the SQL so far */
- int nVarExpr; /* Number of used slots in apVarExpr[] */
- int nVarExprAlloc; /* Number of allocated slots in apVarExpr[] */
- Expr **apVarExpr; /* Pointers to :aaa and $aaaa wildcard expressions */
+ int nzVar; /* Number of available slots in azVar[] */
+ char **azVar; /* Pointers to names of parameters */
Vdbe *pReprepare; /* VM being reprepared (sqlite3Reprepare()) */
int nAlias; /* Number of aliased result set columns */
- int nAliasAlloc; /* Number of allocated slots for aAlias[] */
int *aAlias; /* Register used to hold aliased result */
u8 explain; /* True if the EXPLAIN flag is found on the query */
Token sNameToken; /* Token with unqualified schema object name */
@@ -10539,12 +11296,13 @@
int bMemstat; /* True to enable memory status */
int bCoreMutex; /* True to enable core mutexing */
int bFullMutex; /* True to enable full mutexing */
+ int bOpenUri; /* True to interpret filenames as URIs */
int mxStrlen; /* Maximum string length */
int szLookaside; /* Default lookaside buffer size */
int nLookaside; /* Default lookaside buffer count */
sqlite3_mem_methods m; /* Low-level memory allocation interface */
sqlite3_mutex_methods mutex; /* Low-level mutex interface */
- sqlite3_pcache_methods pcache; /* Low-level page-cache interface */
+ sqlite3_pcache_methods2 pcache2; /* Low-level page-cache interface */
void *pHeap; /* Heap storage space */
int nHeap; /* Size of pHeap[] */
int mnReq, mxReq; /* Min and max heap requests sizes */
@@ -10567,6 +11325,7 @@
int nRefInitMutex; /* Number of users of pInitMutex */
void (*xLog)(void*,int,const char*); /* Function for logging */
void *pLogArg; /* First argument to xLog() */
+ int bLocaltimeFault; /* True to fail localtime() calls */
};
/*
@@ -10749,6 +11508,29 @@
#if defined(SQLITE_TEST)
SQLITE_PRIVATE void *sqlite3TestTextToPtr(const char*);
#endif
+
+/* Output formatting for SQLITE_TESTCTRL_EXPLAIN */
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
+SQLITE_PRIVATE void sqlite3ExplainBegin(Vdbe*);
+SQLITE_PRIVATE void sqlite3ExplainPrintf(Vdbe*, const char*, ...);
+SQLITE_PRIVATE void sqlite3ExplainNL(Vdbe*);
+SQLITE_PRIVATE void sqlite3ExplainPush(Vdbe*);
+SQLITE_PRIVATE void sqlite3ExplainPop(Vdbe*);
+SQLITE_PRIVATE void sqlite3ExplainFinish(Vdbe*);
+SQLITE_PRIVATE void sqlite3ExplainSelect(Vdbe*, Select*);
+SQLITE_PRIVATE void sqlite3ExplainExpr(Vdbe*, Expr*);
+SQLITE_PRIVATE void sqlite3ExplainExprList(Vdbe*, ExprList*);
+SQLITE_PRIVATE const char *sqlite3VdbeExplanation(Vdbe*);
+#else
+# define sqlite3ExplainBegin(X)
+# define sqlite3ExplainSelect(A,B)
+# define sqlite3ExplainExpr(A,B)
+# define sqlite3ExplainExprList(A,B)
+# define sqlite3ExplainFinish(X)
+# define sqlite3VdbeExplanation(X) 0
+#endif
+
+
SQLITE_PRIVATE void sqlite3SetString(char **, sqlite3*, const char*, ...);
SQLITE_PRIVATE void sqlite3ErrorMsg(Parse*, const char*, ...);
SQLITE_PRIVATE int sqlite3Dequote(char*);
@@ -10759,6 +11541,7 @@
SQLITE_PRIVATE void sqlite3ReleaseTempReg(Parse*,int);
SQLITE_PRIVATE int sqlite3GetTempRange(Parse*,int);
SQLITE_PRIVATE void sqlite3ReleaseTempRange(Parse*,int,int);
+SQLITE_PRIVATE void sqlite3ClearTempRegCache(Parse*);
SQLITE_PRIVATE Expr *sqlite3ExprAlloc(sqlite3*,int,const Token*,int);
SQLITE_PRIVATE Expr *sqlite3Expr(sqlite3*,int,const char*);
SQLITE_PRIVATE void sqlite3ExprAttachSubtrees(sqlite3*,Expr*,Expr*,Expr*);
@@ -10788,6 +11571,9 @@
SQLITE_PRIVATE void sqlite3AddDefaultValue(Parse*,ExprSpan*);
SQLITE_PRIVATE void sqlite3AddCollateType(Parse*, Token*);
SQLITE_PRIVATE void sqlite3EndTable(Parse*,Token*,Token*,Select*);
+SQLITE_PRIVATE int sqlite3ParseUri(const char*,const char*,unsigned int*,
+ sqlite3_vfs**,char**,char **);
+SQLITE_PRIVATE int sqlite3CodeOnce(Parse *);
SQLITE_PRIVATE Bitvec *sqlite3BitvecCreate(u32);
SQLITE_PRIVATE int sqlite3BitvecTest(Bitvec*, u32);
@@ -10812,6 +11598,7 @@
#endif
SQLITE_PRIVATE void sqlite3DropTable(Parse*, SrcList*, int, int);
+SQLITE_PRIVATE void sqlite3CodeDropTable(Parse*, Table*, int, int);
SQLITE_PRIVATE void sqlite3DeleteTable(sqlite3*, Table*);
#ifndef SQLITE_OMIT_AUTOINCREMENT
SQLITE_PRIVATE void sqlite3AutoincrementBegin(Parse *pParse);
@@ -10849,7 +11636,7 @@
#endif
SQLITE_PRIVATE void sqlite3DeleteFrom(Parse*, SrcList*, Expr*);
SQLITE_PRIVATE void sqlite3Update(Parse*, SrcList*, ExprList*, Expr*, int);
-SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(Parse*, SrcList*, Expr*, ExprList**, u16);
+SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(Parse*, SrcList*, Expr*, ExprList**,ExprList*,u16);
SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo*);
SQLITE_PRIVATE int sqlite3ExprCodeGetColumn(Parse*, Table*, int, int, int);
SQLITE_PRIVATE void sqlite3ExprCodeGetColumnOfTable(Vdbe*, Table*, int, int, int);
@@ -10887,6 +11674,7 @@
SQLITE_PRIVATE void sqlite3PrngResetState(void);
SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3*);
SQLITE_PRIVATE void sqlite3CodeVerifySchema(Parse*, int);
+SQLITE_PRIVATE void sqlite3CodeVerifyNamedSchema(Parse*, const char *zDb);
SQLITE_PRIVATE void sqlite3BeginTransaction(Parse*, int);
SQLITE_PRIVATE void sqlite3CommitTransaction(Parse*);
SQLITE_PRIVATE void sqlite3RollbackTransaction(Parse*);
@@ -10991,7 +11779,7 @@
SQLITE_PRIVATE int sqlite3Atoi(const char*);
SQLITE_PRIVATE int sqlite3Utf16ByteLen(const void *pData, int nChar);
SQLITE_PRIVATE int sqlite3Utf8CharLen(const char *pData, int nByte);
-SQLITE_PRIVATE int sqlite3Utf8Read(const u8*, const u8**);
+SQLITE_PRIVATE u32 sqlite3Utf8Read(const u8*, const u8**);
/*
** Routines to read and write variable-length integers. These used to
@@ -11037,6 +11825,7 @@
SQLITE_PRIVATE int sqlite3Atoi64(const char*, i64*, int, u8);
SQLITE_PRIVATE void sqlite3Error(sqlite3*, int, const char*,...);
SQLITE_PRIVATE void *sqlite3HexToBlob(sqlite3*, const char *z, int n);
+SQLITE_PRIVATE u8 sqlite3HexToInt(int h);
SQLITE_PRIVATE int sqlite3TwoPartName(Parse *, Token *, Token *, Token **);
SQLITE_PRIVATE const char *sqlite3ErrStr(int);
SQLITE_PRIVATE int sqlite3ReadSchema(Parse *pParse);
@@ -11048,6 +11837,16 @@
SQLITE_PRIVATE int sqlite3CheckCollSeq(Parse *, CollSeq *);
SQLITE_PRIVATE int sqlite3CheckObjectName(Parse *, const char *);
SQLITE_PRIVATE void sqlite3VdbeSetChanges(sqlite3 *, int);
+SQLITE_PRIVATE int sqlite3AddInt64(i64*,i64);
+SQLITE_PRIVATE int sqlite3SubInt64(i64*,i64);
+SQLITE_PRIVATE int sqlite3MulInt64(i64*,i64);
+SQLITE_PRIVATE int sqlite3AbsInt32(int);
+#ifdef SQLITE_ENABLE_8_3_NAMES
+SQLITE_PRIVATE void sqlite3FileSuffix3(const char*, char*);
+#else
+# define sqlite3FileSuffix3(X,Y)
+#endif
+SQLITE_PRIVATE u8 sqlite3GetBoolean(const char *z);
SQLITE_PRIVATE const void *sqlite3ValueText(sqlite3_value*, u8);
SQLITE_PRIVATE int sqlite3ValueBytes(sqlite3_value*, u8);
@@ -11056,7 +11855,7 @@
SQLITE_PRIVATE void sqlite3ValueFree(sqlite3_value*);
SQLITE_PRIVATE sqlite3_value *sqlite3ValueNew(sqlite3 *);
SQLITE_PRIVATE char *sqlite3Utf16to8(sqlite3 *, const void*, int, u8);
-#ifdef SQLITE_ENABLE_STAT2
+#ifdef SQLITE_ENABLE_STAT3
SQLITE_PRIVATE char *sqlite3Utf8to16(sqlite3 *, u8, char *, int, int *);
#endif
SQLITE_PRIVATE int sqlite3ValueFromExpr(sqlite3 *, Expr *, u8, u8, sqlite3_value **);
@@ -11072,7 +11871,7 @@
SQLITE_PRIVATE int sqlite3PendingByte;
#endif
#endif
-SQLITE_PRIVATE void sqlite3RootPageMoved(Db*, int, int);
+SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3*, int, int, int);
SQLITE_PRIVATE void sqlite3Reindex(Parse*, Token*, Token*);
SQLITE_PRIVATE void sqlite3AlterFunctions(void);
SQLITE_PRIVATE void sqlite3AlterRenameTable(Parse*, SrcList*, Token*);
@@ -11099,7 +11898,7 @@
SQLITE_PRIVATE void sqlite3RegisterLikeFunctions(sqlite3*, int);
SQLITE_PRIVATE int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);
SQLITE_PRIVATE void sqlite3MinimumFileFormat(Parse*, int, int);
-SQLITE_PRIVATE void sqlite3SchemaFree(void *);
+SQLITE_PRIVATE void sqlite3SchemaClear(void *);
SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *);
SQLITE_PRIVATE KeyInfo *sqlite3IndexKeyinfo(Parse *, Index *);
@@ -11113,6 +11912,7 @@
SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum*, char*, int, int);
SQLITE_PRIVATE void sqlite3StrAccumAppend(StrAccum*,const char*,int);
+SQLITE_PRIVATE void sqlite3AppendSpace(StrAccum*,int);
SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum*);
SQLITE_PRIVATE void sqlite3StrAccumReset(StrAccum*);
SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest*,int,int);
@@ -11157,6 +11957,8 @@
# define sqlite3VtabLock(X)
# define sqlite3VtabUnlock(X)
# define sqlite3VtabUnlockList(X)
+# define sqlite3VtabSavepoint(X, Y, Z) SQLITE_OK
+# define sqlite3GetVTable(X,Y) ((VTable*)0)
#else
SQLITE_PRIVATE void sqlite3VtabClear(sqlite3 *db, Table*);
SQLITE_PRIVATE int sqlite3VtabSync(sqlite3 *db, char **);
@@ -11165,6 +11967,8 @@
SQLITE_PRIVATE void sqlite3VtabLock(VTable *);
SQLITE_PRIVATE void sqlite3VtabUnlock(VTable *);
SQLITE_PRIVATE void sqlite3VtabUnlockList(sqlite3*);
+SQLITE_PRIVATE int sqlite3VtabSavepoint(sqlite3 *, int, int);
+SQLITE_PRIVATE VTable *sqlite3GetVTable(sqlite3*, Table*);
# define sqlite3VtabInSync(db) ((db)->nVTrans>0 && (db)->aVTrans==0)
#endif
SQLITE_PRIVATE void sqlite3VtabMakeWritable(Parse*,Table*);
@@ -11184,9 +11988,8 @@
SQLITE_PRIVATE void sqlite3ExprListCheckLength(Parse*, ExprList*, const char*);
SQLITE_PRIVATE CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *);
SQLITE_PRIVATE int sqlite3TempInMemory(const sqlite3*);
-SQLITE_PRIVATE VTable *sqlite3GetVTable(sqlite3*, Table*);
SQLITE_PRIVATE const char *sqlite3JournalModename(int);
-SQLITE_PRIVATE int sqlite3Checkpoint(sqlite3*, int);
+SQLITE_PRIVATE int sqlite3Checkpoint(sqlite3*, int, int, int*, int*);
SQLITE_PRIVATE int sqlite3WalDefaultHook(void*,sqlite3*,const char*,int);
/* Declarations for functions in fkey.c. All of these are replaced by
@@ -11471,7 +12274,9 @@
};
#endif
-
+#ifndef SQLITE_USE_URI
+# define SQLITE_USE_URI 0
+#endif
/*
** The following singleton contains the global configuration for
@@ -11481,12 +12286,13 @@
SQLITE_DEFAULT_MEMSTATUS, /* bMemstat */
1, /* bCoreMutex */
SQLITE_THREADSAFE==1, /* bFullMutex */
+ SQLITE_USE_URI, /* bOpenUri */
0x7ffffffe, /* mxStrlen */
- 100, /* szLookaside */
+ 128, /* szLookaside */
500, /* nLookaside */
{0,0,0,0,0,0,0,0}, /* m */
{0,0,0,0,0,0,0,0,0}, /* mutex */
- {0,0,0,0,0,0,0,0,0,0,0}, /* pcache */
+ {0,0,0,0,0,0,0,0,0,0,0,0,0},/* pcache2 */
(void*)0, /* pHeap */
0, /* nHeap */
0, 0, /* mnHeap, mxHeap */
@@ -11508,6 +12314,7 @@
0, /* nRefInitMutex */
0, /* xLog */
0, /* pLogArg */
+ 0, /* bLocaltimeFault */
};
@@ -11674,8 +12481,8 @@
#ifdef SQLITE_ENABLE_RTREE
"ENABLE_RTREE",
#endif
-#ifdef SQLITE_ENABLE_STAT2
- "ENABLE_STAT2",
+#ifdef SQLITE_ENABLE_STAT3
+ "ENABLE_STAT3",
#endif
#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY
"ENABLE_UNLOCK_NOTIFY",
@@ -11704,6 +12511,9 @@
#ifdef SQLITE_LOCK_TRACE
"LOCK_TRACE",
#endif
+#ifdef SQLITE_MAX_SCHEMA_RETRY
+ "MAX_SCHEMA_RETRY=" CTIMEOPT_VAL(SQLITE_MAX_SCHEMA_RETRY),
+#endif
#ifdef SQLITE_MEMDEBUG
"MEMDEBUG",
#endif
@@ -11734,6 +12544,9 @@
#ifdef SQLITE_OMIT_AUTOMATIC_INDEX
"OMIT_AUTOMATIC_INDEX",
#endif
+#ifdef SQLITE_OMIT_AUTORESET
+ "OMIT_AUTORESET",
+#endif
#ifdef SQLITE_OMIT_AUTOVACUUM
"OMIT_AUTOVACUUM",
#endif
@@ -11814,6 +12627,9 @@
#ifdef SQLITE_OMIT_MEMORYDB
"OMIT_MEMORYDB",
#endif
+#ifdef SQLITE_OMIT_MERGE_SORT
+ "OMIT_MERGE_SORT",
+#endif
#ifdef SQLITE_OMIT_OR_OPTIMIZATION
"OMIT_OR_OPTIMIZATION",
#endif
@@ -12000,6 +12816,12 @@
*/
typedef unsigned char Bool;
+/* Opaque type used by code in vdbesort.c */
+typedef struct VdbeSorter VdbeSorter;
+
+/* Opaque type used by the explainer */
+typedef struct Explain Explain;
+
/*
** A cursor is a pointer into a single BTree within a database file.
** The cursor can seek to a BTree entry with a particular key, or
@@ -12009,16 +12831,14 @@
**
** Every cursor that the virtual machine has open is represented by an
** instance of the following structure.
-**
-** If the VdbeCursor.isTriggerRow flag is set it means that this cursor is
-** really a single row that represents the NEW or OLD pseudo-table of
-** a row trigger. The data for the row is stored in VdbeCursor.pData and
-** the rowid is in VdbeCursor.iKey.
*/
struct VdbeCursor {
BtCursor *pCursor; /* The cursor structure of the backend */
+ Btree *pBt; /* Separate file holding temporary table */
+ KeyInfo *pKeyInfo; /* Info about index keys needed by index cursors */
int iDb; /* Index of cursor database in db->aDb[] (or -1) */
- i64 lastRowid; /* Last rowid from a Next or NextIdx operation */
+ int pseudoTableReg; /* Register holding pseudotable content. */
+ int nField; /* Number of fields in the header */
Bool zeroed; /* True if zeroed out and ready for reuse */
Bool rowidIsValid; /* True if lastRowid is valid */
Bool atFirst; /* True if pointing to first entry */
@@ -12028,14 +12848,13 @@
Bool isTable; /* True if a table requiring integer keys */
Bool isIndex; /* True if an index containing keys only - no data */
Bool isOrdered; /* True if the underlying table is BTREE_UNORDERED */
- i64 movetoTarget; /* Argument to the deferred sqlite3BtreeMoveto() */
- Btree *pBt; /* Separate file holding temporary table */
- int pseudoTableReg; /* Register holding pseudotable content. */
- KeyInfo *pKeyInfo; /* Info about index keys needed by index cursors */
- int nField; /* Number of fields in the header */
- i64 seqCount; /* Sequence counter */
+ Bool isSorter; /* True if a new-style sorter */
sqlite3_vtab_cursor *pVtabCursor; /* The cursor for a virtual table */
const sqlite3_module *pModule; /* Module for cursor pVtabCursor */
+ i64 seqCount; /* Sequence counter */
+ i64 movetoTarget; /* Argument to the deferred sqlite3BtreeMoveto() */
+ i64 lastRowid; /* Last rowid from a Next or NextIdx operation */
+ VdbeSorter *pSorter; /* Sorter object for OP_SorterOpen cursors */
/* Result of last sqlite3BtreeMoveto() done by an OP_NotExists or
** OP_IsUnique opcode on this cursor. */
@@ -12087,6 +12906,8 @@
int nOp; /* Size of aOp array */
Mem *aMem; /* Array of memory cells for parent frame */
int nMem; /* Number of entries in aMem */
+ u8 *aOnceFlag; /* Array of OP_Once flags for parent frame */
+ int nOnceFlag; /* Number of entries in aOnceFlag */
VdbeCursor **apCsr; /* Array of Vdbe cursors for parent frame */
u16 nCursor; /* Number of entries in apCsr */
void *token; /* Copy of SubProgram.token */
@@ -12107,25 +12928,19 @@
/*
** Internally, the vdbe manipulates nearly all SQL values as Mem
** structures. Each Mem struct may cache multiple representations (string,
-** integer etc.) of the same value. A value (and therefore Mem structure)
-** has the following properties:
-**
-** Each value has a manifest type. The manifest type of the value stored
-** in a Mem struct is returned by the MemType(Mem*) macro. The type is
-** one of SQLITE_NULL, SQLITE_INTEGER, SQLITE_REAL, SQLITE_TEXT or
-** SQLITE_BLOB.
+** integer etc.) of the same value.
*/
struct Mem {
+ sqlite3 *db; /* The associated database connection */
+ char *z; /* String or BLOB value */
+ double r; /* Real value */
union {
- i64 i; /* Integer value. */
+ i64 i; /* Integer value used when MEM_Int is set in flags */
int nZero; /* Used when bit MEM_Zero is set in flags */
FuncDef *pDef; /* Used only when flags==MEM_Agg */
RowSet *pRowSet; /* Used only when flags==MEM_RowSet */
VdbeFrame *pFrame; /* Used when flags==MEM_Frame */
} u;
- double r; /* Real value */
- sqlite3 *db; /* The associated database connection */
- char *z; /* String or BLOB value */
int n; /* Number of characters in string value, excluding '\0' */
u16 flags; /* Some combination of MEM_Null, MEM_Str, MEM_Dyn, etc. */
u8 type; /* One of SQLITE_NULL, SQLITE_TEXT, SQLITE_INTEGER, etc */
@@ -12149,9 +12964,6 @@
** database (see below for exceptions). If the MEM_Term flag is also
** set, then the string is nul terminated. The MEM_Int and MEM_Real
** flags may coexist with the MEM_Str flag.
-**
-** Multiple of these values can appear in Mem.flags. But only one
-** at a time can appear in Mem.type.
*/
#define MEM_Null 0x0001 /* Value is NULL */
#define MEM_Str 0x0002 /* Value is a string */
@@ -12235,22 +13047,22 @@
};
/*
-** A Set structure is used for quick testing to see if a value
-** is part of a small set. Sets are used to implement code like
-** this:
-** x.y IN ('hi','hoo','hum')
+** An Explain object accumulates indented output which is helpful
+** in describing recursive data structures.
*/
-typedef struct Set Set;
-struct Set {
- Hash hash; /* A set is just a hash table */
- HashElem *prev; /* Previously accessed hash elemen */
+struct Explain {
+ Vdbe *pVdbe; /* Attach the explanation to this Vdbe */
+ StrAccum str; /* The string being accumulated */
+ int nIndent; /* Number of elements in aIndent */
+ u16 aIndent[100]; /* Levels of indentation */
+ char zBase[100]; /* Initial space */
};
/*
** An instance of the virtual machine. This structure contains the complete
** state of the virtual machine.
**
-** The "sqlite3_stmt" structure pointer that is returned by sqlite3_compile()
+** The "sqlite3_stmt" structure pointer that is returned by sqlite3_prepare()
** is really a pointer to an instance of this structure.
**
** The Vdbe.inVtabMethod variable is set to non-zero for the duration of
@@ -12263,31 +13075,31 @@
*/
struct Vdbe {
sqlite3 *db; /* The database connection that owns this statement */
- Vdbe *pPrev,*pNext; /* Linked list of VDBEs with the same Vdbe.db */
- int nOp; /* Number of instructions in the program */
- int nOpAlloc; /* Number of slots allocated for aOp[] */
Op *aOp; /* Space to hold the virtual machine's program */
- int nLabel; /* Number of labels used */
- int nLabelAlloc; /* Number of slots allocated in aLabel[] */
- int *aLabel; /* Space to hold the labels */
+ Mem *aMem; /* The memory locations */
Mem **apArg; /* Arguments to currently executing user function */
Mem *aColName; /* Column names to return */
Mem *pResultSet; /* Pointer to an array of results */
+ int nMem; /* Number of memory locations currently allocated */
+ int nOp; /* Number of instructions in the program */
+ int nOpAlloc; /* Number of slots allocated for aOp[] */
+ int nLabel; /* Number of labels used */
+ int nLabelAlloc; /* Number of slots allocated in aLabel[] */
+ int *aLabel; /* Space to hold the labels */
u16 nResColumn; /* Number of columns in one row of the result set */
u16 nCursor; /* Number of slots in apCsr[] */
+ u32 magic; /* Magic number for sanity checking */
+ char *zErrMsg; /* Error message written here */
+ Vdbe *pPrev,*pNext; /* Linked list of VDBEs with the same Vdbe.db */
VdbeCursor **apCsr; /* One element of this array for each open cursor */
- u8 errorAction; /* Recovery action to do in case of an error */
- u8 okVar; /* True if azVar[] has been initialized */
- ynVar nVar; /* Number of entries in aVar[] */
Mem *aVar; /* Values for the OP_Variable opcode. */
char **azVar; /* Name of variables */
- u32 magic; /* Magic number for sanity checking */
- int nMem; /* Number of memory locations currently allocated */
- Mem *aMem; /* The memory locations */
+ ynVar nVar; /* Number of entries in aVar[] */
+ ynVar nzVar; /* Number of entries in azVar[] */
u32 cacheCtr; /* VdbeCursor row cache generation counter */
int pc; /* The program counter */
int rc; /* Value to return */
- char *zErrMsg; /* Error message written here */
+ u8 errorAction; /* Recovery action to do in case of an error */
u8 explain; /* True if EXPLAIN present on SQL command */
u8 changeCntOn; /* True to update the change-counter */
u8 expired; /* True if the VM needs to be recompiled */
@@ -12298,23 +13110,31 @@
u8 readOnly; /* True for read-only statements */
u8 isPrepareV2; /* True if prepared with prepare_v2() */
int nChange; /* Number of db changes made since last reset */
- int btreeMask; /* Bitmask of db->aDb[] entries referenced */
- i64 startTime; /* Time when query started - used for profiling */
- BtreeMutexArray aMutex; /* An array of Btree used here and needing locks */
+ yDbMask btreeMask; /* Bitmask of db->aDb[] entries referenced */
+ yDbMask lockMask; /* Subset of btreeMask that requires a lock */
+ int iStatement; /* Statement number (or 0 if has not opened stmt) */
int aCounter[3]; /* Counters used by sqlite3_stmt_status() */
- char *zSql; /* Text of the SQL statement that generated this */
- void *pFree; /* Free this when deleting the vdbe */
+#ifndef SQLITE_OMIT_TRACE
+ i64 startTime; /* Time when query started - used for profiling */
+#endif
i64 nFkConstraint; /* Number of imm. FK constraints this VM */
i64 nStmtDefCons; /* Number of def. constraints when stmt started */
- int iStatement; /* Statement number (or 0 if has not opened stmt) */
+ char *zSql; /* Text of the SQL statement that generated this */
+ void *pFree; /* Free this when deleting the vdbe */
#ifdef SQLITE_DEBUG
FILE *trace; /* Write an execution trace here, if not NULL */
#endif
+#ifdef SQLITE_ENABLE_TREE_EXPLAIN
+ Explain *pExplain; /* The explainer */
+ char *zExplain; /* Explanation of data structures */
+#endif
VdbeFrame *pFrame; /* Parent frame */
VdbeFrame *pDelFrame; /* List of frame objects to free on VM reset */
int nFrame; /* Number of frames in pFrame list */
u32 expmask; /* Binding to these vars invalidates VM */
SubProgram *pProgram; /* Linked list of all sub-programs used by VM */
+ int nOnceFlag; /* Size of array aOnceFlag[] */
+ u8 *aOnceFlag; /* Flags for OP_Once */
};
/*
@@ -12374,6 +13194,9 @@
SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(BtCursor*,int,int,int,Mem*);
SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p);
SQLITE_PRIVATE void sqlite3VdbeMemReleaseExternal(Mem *p);
+#define VdbeMemRelease(X) \
+ if((X)->flags&(MEM_Agg|MEM_Dyn|MEM_RowSet|MEM_Frame)) \
+ sqlite3VdbeMemReleaseExternal(X);
SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem*, FuncDef*);
SQLITE_PRIVATE const char *sqlite3OpcodeName(int);
SQLITE_PRIVATE int sqlite3VdbeMemGrow(Mem *pMem, int n, int preserve);
@@ -12381,9 +13204,36 @@
SQLITE_PRIVATE void sqlite3VdbeFrameDelete(VdbeFrame*);
SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *);
SQLITE_PRIVATE void sqlite3VdbeMemStoreType(Mem *pMem);
+SQLITE_PRIVATE int sqlite3VdbeTransferError(Vdbe *p);
+
+#ifdef SQLITE_OMIT_MERGE_SORT
+# define sqlite3VdbeSorterInit(Y,Z) SQLITE_OK
+# define sqlite3VdbeSorterWrite(X,Y,Z) SQLITE_OK
+# define sqlite3VdbeSorterClose(Y,Z)
+# define sqlite3VdbeSorterRowkey(Y,Z) SQLITE_OK
+# define sqlite3VdbeSorterRewind(X,Y,Z) SQLITE_OK
+# define sqlite3VdbeSorterNext(X,Y,Z) SQLITE_OK
+# define sqlite3VdbeSorterCompare(X,Y,Z) SQLITE_OK
+#else
+SQLITE_PRIVATE int sqlite3VdbeSorterInit(sqlite3 *, VdbeCursor *);
+SQLITE_PRIVATE void sqlite3VdbeSorterClose(sqlite3 *, VdbeCursor *);
+SQLITE_PRIVATE int sqlite3VdbeSorterRowkey(VdbeCursor *, Mem *);
+SQLITE_PRIVATE int sqlite3VdbeSorterNext(sqlite3 *, VdbeCursor *, int *);
+SQLITE_PRIVATE int sqlite3VdbeSorterRewind(sqlite3 *, VdbeCursor *, int *);
+SQLITE_PRIVATE int sqlite3VdbeSorterWrite(sqlite3 *, VdbeCursor *, Mem *);
+SQLITE_PRIVATE int sqlite3VdbeSorterCompare(VdbeCursor *, Mem *, int *);
+#endif
+
+#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0
+SQLITE_PRIVATE void sqlite3VdbeEnter(Vdbe*);
+SQLITE_PRIVATE void sqlite3VdbeLeave(Vdbe*);
+#else
+# define sqlite3VdbeEnter(X)
+# define sqlite3VdbeLeave(X)
+#endif
#ifdef SQLITE_DEBUG
-SQLITE_PRIVATE void sqlite3VdbeMemPrepareToChange(Vdbe*,Mem*);
+SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe*,Mem*);
#endif
#ifndef SQLITE_OMIT_FOREIGN_KEY
@@ -12392,12 +13242,6 @@
# define sqlite3VdbeCheckFk(p,i) 0
#endif
-#ifndef SQLITE_OMIT_SHARED_CACHE
-SQLITE_PRIVATE void sqlite3VdbeMutexArrayEnter(Vdbe *p);
-#else
-# define sqlite3VdbeMutexArrayEnter(p)
-#endif
-
SQLITE_PRIVATE int sqlite3VdbeMemTranslate(Mem*, u8);
#ifdef SQLITE_DEBUG
SQLITE_PRIVATE void sqlite3VdbePrintSql(Vdbe*);
@@ -12407,8 +13251,10 @@
#ifndef SQLITE_OMIT_INCRBLOB
SQLITE_PRIVATE int sqlite3VdbeMemExpandBlob(Mem *);
+ #define ExpandBlob(P) (((P)->flags&MEM_Zero)?sqlite3VdbeMemExpandBlob(P):0)
#else
#define sqlite3VdbeMemExpandBlob(x) SQLITE_OK
+ #define ExpandBlob(P) SQLITE_OK
#endif
#endif /* !defined(_VDBEINT_H_) */
@@ -12516,6 +13362,22 @@
break;
}
+ case SQLITE_DBSTATUS_LOOKASIDE_HIT:
+ case SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE:
+ case SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL: {
+ testcase( op==SQLITE_DBSTATUS_LOOKASIDE_HIT );
+ testcase( op==SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE );
+ testcase( op==SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL );
+ assert( (op-SQLITE_DBSTATUS_LOOKASIDE_HIT)>=0 );
+ assert( (op-SQLITE_DBSTATUS_LOOKASIDE_HIT)<3 );
+ *pCurrent = 0;
+ *pHighwater = db->lookaside.anStat[op - SQLITE_DBSTATUS_LOOKASIDE_HIT];
+ if( resetFlag ){
+ db->lookaside.anStat[op - SQLITE_DBSTATUS_LOOKASIDE_HIT] = 0;
+ }
+ break;
+ }
+
/*
** Return an approximation for the amount of memory currently used
** by all pagers associated with the given database connection. The
@@ -12547,6 +13409,7 @@
int i; /* Used to iterate through schemas */
int nByte = 0; /* Used to accumulate return value */
+ sqlite3BtreeEnterAll(db);
db->pnBytesFreed = &nByte;
for(i=0; i<db->nDb; i++){
Schema *pSchema = db->aDb[i].pSchema;
@@ -12573,6 +13436,7 @@
}
}
db->pnBytesFreed = 0;
+ sqlite3BtreeLeaveAll(db);
*pHighwater = 0;
*pCurrent = nByte;
@@ -12600,6 +13464,28 @@
break;
}
+ /*
+ ** Set *pCurrent to the total cache hits or misses encountered by all
+ ** pagers the database handle is connected to. *pHighwater is always set
+ ** to zero.
+ */
+ case SQLITE_DBSTATUS_CACHE_HIT:
+ case SQLITE_DBSTATUS_CACHE_MISS: {
+ int i;
+ int nRet = 0;
+ assert( SQLITE_DBSTATUS_CACHE_MISS==SQLITE_DBSTATUS_CACHE_HIT+1 );
+
+ for(i=0; i<db->nDb; i++){
+ if( db->aDb[i].pBt ){
+ Pager *pPager = sqlite3BtreePager(db->aDb[i].pBt);
+ sqlite3PagerCacheStat(pPager, op, resetFlag, &nRet);
+ }
+ }
+ *pHighwater = 0;
+ *pCurrent = nRet;
+ break;
+ }
+
default: {
rc = SQLITE_ERROR;
}
@@ -12655,26 +13541,12 @@
** Willmann-Bell, Inc
** Richmond, Virginia (USA)
*/
+/* #include <stdlib.h> */
+/* #include <assert.h> */
#include <time.h>
#ifndef SQLITE_OMIT_DATETIME_FUNCS
-/*
-** On recent Windows platforms, the localtime_s() function is available
-** as part of the "Secure CRT". It is essentially equivalent to
-** localtime_r() available under most POSIX platforms, except that the
-** order of the parameters is reversed.
-**
-** See http://msdn.microsoft.com/en-us/library/a442x3ye(VS.80).aspx.
-**
-** If the user has not indicated to use localtime_r() or localtime_s()
-** already, check for an MSVC build environment that provides
-** localtime_s().
-*/
-#if !defined(HAVE_LOCALTIME_R) && !defined(HAVE_LOCALTIME_S) && \
- defined(_MSC_VER) && defined(_CRT_INSECURE_DEPRECATE)
-#define HAVE_LOCALTIME_S 1
-#endif
/*
** A structure for holding a single date and time.
@@ -12914,12 +13786,18 @@
}
/*
-** Set the time to the current time reported by the VFS
+** Set the time to the current time reported by the VFS.
+**
+** Return the number of errors.
*/
-static void setDateTimeToCurrent(sqlite3_context *context, DateTime *p){
+static int setDateTimeToCurrent(sqlite3_context *context, DateTime *p){
sqlite3 *db = sqlite3_context_db_handle(context);
- sqlite3OsCurrentTimeInt64(db->pVfs, &p->iJD);
- p->validJD = 1;
+ if( sqlite3OsCurrentTimeInt64(db->pVfs, &p->iJD)==SQLITE_OK ){
+ p->validJD = 1;
+ return 0;
+ }else{
+ return 1;
+ }
}
/*
@@ -12949,8 +13827,7 @@
}else if( parseHhMmSs(zDate, p)==0 ){
return 0;
}else if( sqlite3StrICmp(zDate,"now")==0){
- setDateTimeToCurrent(context, p);
- return 0;
+ return setDateTimeToCurrent(context, p);
}else if( sqlite3AtoF(zDate, &r, sqlite3Strlen30(zDate), SQLITE_UTF8) ){
p->iJD = (sqlite3_int64)(r*86400000.0 + 0.5);
p->validJD = 1;
@@ -13020,15 +13897,85 @@
p->validTZ = 0;
}
+/*
+** On recent Windows platforms, the localtime_s() function is available
+** as part of the "Secure CRT". It is essentially equivalent to
+** localtime_r() available under most POSIX platforms, except that the
+** order of the parameters is reversed.
+**
+** See http://msdn.microsoft.com/en-us/library/a442x3ye(VS.80).aspx.
+**
+** If the user has not indicated to use localtime_r() or localtime_s()
+** already, check for an MSVC build environment that provides
+** localtime_s().
+*/
+#if !defined(HAVE_LOCALTIME_R) && !defined(HAVE_LOCALTIME_S) && \
+ defined(_MSC_VER) && defined(_CRT_INSECURE_DEPRECATE)
+#define HAVE_LOCALTIME_S 1
+#endif
+
#ifndef SQLITE_OMIT_LOCALTIME
/*
-** Compute the difference (in milliseconds)
-** between localtime and UTC (a.k.a. GMT)
-** for the time value p where p is in UTC.
+** The following routine implements the rough equivalent of localtime_r()
+** using whatever operating-system specific localtime facility that
+** is available. This routine returns 0 on success and
+** non-zero on any kind of error.
+**
+** If the sqlite3GlobalConfig.bLocaltimeFault variable is true then this
+** routine will always fail.
*/
-static sqlite3_int64 localtimeOffset(DateTime *p){
+static int osLocaltime(time_t *t, struct tm *pTm){
+ int rc;
+#if (!defined(HAVE_LOCALTIME_R) || !HAVE_LOCALTIME_R) \
+ && (!defined(HAVE_LOCALTIME_S) || !HAVE_LOCALTIME_S)
+ struct tm *pX;
+#if SQLITE_THREADSAFE>0
+ sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+#endif
+ sqlite3_mutex_enter(mutex);
+ pX = localtime(t);
+#ifndef SQLITE_OMIT_BUILTIN_TEST
+ if( sqlite3GlobalConfig.bLocaltimeFault ) pX = 0;
+#endif
+ if( pX ) *pTm = *pX;
+ sqlite3_mutex_leave(mutex);
+ rc = pX==0;
+#else
+#ifndef SQLITE_OMIT_BUILTIN_TEST
+ if( sqlite3GlobalConfig.bLocaltimeFault ) return 1;
+#endif
+#if defined(HAVE_LOCALTIME_R) && HAVE_LOCALTIME_R
+ rc = localtime_r(t, pTm)==0;
+#else
+ rc = localtime_s(pTm, t);
+#endif /* HAVE_LOCALTIME_R */
+#endif /* HAVE_LOCALTIME_R || HAVE_LOCALTIME_S */
+ return rc;
+}
+#endif /* SQLITE_OMIT_LOCALTIME */
+
+
+#ifndef SQLITE_OMIT_LOCALTIME
+/*
+** Compute the difference (in milliseconds) between localtime and UTC
+** (a.k.a. GMT) for the time value p where p is in UTC. If no error occurs,
+** return this value and set *pRc to SQLITE_OK.
+**
+** Or, if an error does occur, set *pRc to SQLITE_ERROR. The returned value
+** is undefined in this case.
+*/
+static sqlite3_int64 localtimeOffset(
+ DateTime *p, /* Date at which to calculate offset */
+ sqlite3_context *pCtx, /* Write error here if one occurs */
+ int *pRc /* OUT: Error code. SQLITE_OK or ERROR */
+){
DateTime x, y;
time_t t;
+ struct tm sLocal;
+
+ /* Initialize the contents of sLocal to avoid a compiler warning. */
+ memset(&sLocal, 0, sizeof(sLocal));
+
x = *p;
computeYMD_HMS(&x);
if( x.Y<1971 || x.Y>=2038 ){
@@ -13046,47 +13993,23 @@
x.validJD = 0;
computeJD(&x);
t = (time_t)(x.iJD/1000 - 21086676*(i64)10000);
-#ifdef HAVE_LOCALTIME_R
- {
- struct tm sLocal;
- localtime_r(&t, &sLocal);
- y.Y = sLocal.tm_year + 1900;
- y.M = sLocal.tm_mon + 1;
- y.D = sLocal.tm_mday;
- y.h = sLocal.tm_hour;
- y.m = sLocal.tm_min;
- y.s = sLocal.tm_sec;
+ if( osLocaltime(&t, &sLocal) ){
+ sqlite3_result_error(pCtx, "local time unavailable", -1);
+ *pRc = SQLITE_ERROR;
+ return 0;
}
-#elif defined(HAVE_LOCALTIME_S) && HAVE_LOCALTIME_S
- {
- struct tm sLocal;
- localtime_s(&sLocal, &t);
- y.Y = sLocal.tm_year + 1900;
- y.M = sLocal.tm_mon + 1;
- y.D = sLocal.tm_mday;
- y.h = sLocal.tm_hour;
- y.m = sLocal.tm_min;
- y.s = sLocal.tm_sec;
- }
-#else
- {
- struct tm *pTm;
- sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
- pTm = localtime(&t);
- y.Y = pTm->tm_year + 1900;
- y.M = pTm->tm_mon + 1;
- y.D = pTm->tm_mday;
- y.h = pTm->tm_hour;
- y.m = pTm->tm_min;
- y.s = pTm->tm_sec;
- sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
- }
-#endif
+ y.Y = sLocal.tm_year + 1900;
+ y.M = sLocal.tm_mon + 1;
+ y.D = sLocal.tm_mday;
+ y.h = sLocal.tm_hour;
+ y.m = sLocal.tm_min;
+ y.s = sLocal.tm_sec;
y.validYMD = 1;
y.validHMS = 1;
y.validJD = 0;
y.validTZ = 0;
computeJD(&y);
+ *pRc = SQLITE_OK;
return y.iJD - x.iJD;
}
#endif /* SQLITE_OMIT_LOCALTIME */
@@ -13110,9 +14033,12 @@
** localtime
** utc
**
-** Return 0 on success and 1 if there is any kind of error.
+** Return 0 on success and 1 if there is any kind of error. If the error
+** is in a system call (i.e. localtime()), then an error message is written
+** to context pCtx. If the error is an unrecognized modifier, no error is
+** written to pCtx.
*/
-static int parseModifier(const char *zMod, DateTime *p){
+static int parseModifier(sqlite3_context *pCtx, const char *zMod, DateTime *p){
int rc = 1;
int n;
double r;
@@ -13132,9 +14058,8 @@
*/
if( strcmp(z, "localtime")==0 ){
computeJD(p);
- p->iJD += localtimeOffset(p);
+ p->iJD += localtimeOffset(p, pCtx, &rc);
clearYMD_HMS_TZ(p);
- rc = 0;
}
break;
}
@@ -13155,11 +14080,12 @@
else if( strcmp(z, "utc")==0 ){
sqlite3_int64 c1;
computeJD(p);
- c1 = localtimeOffset(p);
- p->iJD -= c1;
- clearYMD_HMS_TZ(p);
- p->iJD += c1 - localtimeOffset(p);
- rc = 0;
+ c1 = localtimeOffset(p, pCtx, &rc);
+ if( rc==SQLITE_OK ){
+ p->iJD -= c1;
+ clearYMD_HMS_TZ(p);
+ p->iJD += c1 - localtimeOffset(p, pCtx, &rc);
+ }
}
#endif
break;
@@ -13328,8 +14254,9 @@
int eType;
memset(p, 0, sizeof(*p));
if( argc==0 ){
- setDateTimeToCurrent(context, p);
- }else if( (eType = sqlite3_value_type(argv[0]))==SQLITE_FLOAT
+ return setDateTimeToCurrent(context, p);
+ }
+ if( (eType = sqlite3_value_type(argv[0]))==SQLITE_FLOAT
|| eType==SQLITE_INTEGER ){
p->iJD = (sqlite3_int64)(sqlite3_value_double(argv[0])*86400000.0 + 0.5);
p->validJD = 1;
@@ -13340,9 +14267,8 @@
}
}
for(i=1; i<argc; i++){
- if( (z = sqlite3_value_text(argv[i]))==0 || parseModifier((char*)z, p) ){
- return 1;
- }
+ z = sqlite3_value_text(argv[i]);
+ if( z==0 || parseModifier(context, (char*)z, p) ) return 1;
}
return 0;
}
@@ -13642,31 +14568,28 @@
char *zFormat = (char *)sqlite3_user_data(context);
sqlite3 *db;
sqlite3_int64 iT;
+ struct tm *pTm;
+ struct tm sNow;
char zBuf[20];
UNUSED_PARAMETER(argc);
UNUSED_PARAMETER(argv);
db = sqlite3_context_db_handle(context);
- sqlite3OsCurrentTimeInt64(db->pVfs, &iT);
+ if( sqlite3OsCurrentTimeInt64(db->pVfs, &iT) ) return;
t = iT/1000 - 10000*(sqlite3_int64)21086676;
#ifdef HAVE_GMTIME_R
- {
- struct tm sNow;
- gmtime_r(&t, &sNow);
- strftime(zBuf, 20, zFormat, &sNow);
- }
+ pTm = gmtime_r(&t, &sNow);
#else
- {
- struct tm *pTm;
- sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
- pTm = gmtime(&t);
- strftime(zBuf, 20, zFormat, pTm);
- sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
- }
+ sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+ pTm = gmtime(&t);
+ if( pTm ) memcpy(&sNow, pTm, sizeof(sNow));
+ sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
#endif
-
- sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT);
+ if( pTm ){
+ strftime(zBuf, 20, zFormat, &sNow);
+ sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT);
+ }
}
#endif
@@ -13731,11 +14654,18 @@
** The following functions are instrumented for malloc() failure
** testing:
**
-** sqlite3OsOpen()
** sqlite3OsRead()
** sqlite3OsWrite()
** sqlite3OsSync()
+** sqlite3OsFileSize()
** sqlite3OsLock()
+** sqlite3OsCheckReservedLock()
+** sqlite3OsFileControl()
+** sqlite3OsShmMap()
+** sqlite3OsOpen()
+** sqlite3OsDelete()
+** sqlite3OsAccess()
+** sqlite3OsFullPathname()
**
*/
#if defined(SQLITE_TEST)
@@ -13794,9 +14724,23 @@
DO_OS_MALLOC_TEST(id);
return id->pMethods->xCheckReservedLock(id, pResOut);
}
+
+/*
+** Use sqlite3OsFileControl() when we are doing something that might fail
+** and we need to know about the failures. Use sqlite3OsFileControlHint()
+** when simply tossing information over the wall to the VFS and we do not
+** really care if the VFS receives and understands the information since it
+** is only a hint and can be safely ignored. The sqlite3OsFileControlHint()
+** routine has no return value since the return value would be meaningless.
+*/
SQLITE_PRIVATE int sqlite3OsFileControl(sqlite3_file *id, int op, void *pArg){
+ DO_OS_MALLOC_TEST(id);
return id->pMethods->xFileControl(id, op, pArg);
}
+SQLITE_PRIVATE void sqlite3OsFileControlHint(sqlite3_file *id, int op, void *pArg){
+ (void)id->pMethods->xFileControl(id, op, pArg);
+}
+
SQLITE_PRIVATE int sqlite3OsSectorSize(sqlite3_file *id){
int (*xSectorSize)(sqlite3_file*) = id->pMethods->xSectorSize;
return (xSectorSize ? xSectorSize(id) : SQLITE_DEFAULT_SECTOR_SIZE);
@@ -13820,6 +14764,7 @@
int bExtend, /* True to extend file if necessary */
void volatile **pp /* OUT: Pointer to mapping */
){
+ DO_OS_MALLOC_TEST(id);
return id->pMethods->xShmMap(id, iPage, pgsz, bExtend, pp);
}
@@ -13836,15 +14781,17 @@
){
int rc;
DO_OS_MALLOC_TEST(0);
- /* 0x87f3f is a mask of SQLITE_OPEN_ flags that are valid to be passed
+ /* 0x87f7f is a mask of SQLITE_OPEN_ flags that are valid to be passed
** down into the VFS layer. Some SQLITE_OPEN_ flags (for example,
** SQLITE_OPEN_FULLMUTEX or SQLITE_OPEN_SHAREDCACHE) are blocked before
** reaching the VFS. */
- rc = pVfs->xOpen(pVfs, zPath, pFile, flags & 0x87f3f, pFlagsOut);
+ rc = pVfs->xOpen(pVfs, zPath, pFile, flags & 0x87f7f, pFlagsOut);
assert( rc==SQLITE_OK || pFile->pMethods==0 );
return rc;
}
SQLITE_PRIVATE int sqlite3OsDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){
+ DO_OS_MALLOC_TEST(0);
+ assert( dirSync==0 || dirSync==1 );
return pVfs->xDelete(pVfs, zPath, dirSync);
}
SQLITE_PRIVATE int sqlite3OsAccess(
@@ -13862,6 +14809,7 @@
int nPathOut,
char *zPathOut
){
+ DO_OS_MALLOC_TEST(0);
zPathOut[0] = 0;
return pVfs->xFullPathname(pVfs, zPath, nPathOut, zPathOut);
}
@@ -13912,7 +14860,7 @@
){
int rc = SQLITE_NOMEM;
sqlite3_file *pFile;
- pFile = (sqlite3_file *)sqlite3Malloc(pVfs->szOsFile);
+ pFile = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile);
if( pFile ){
rc = sqlite3OsOpen(pVfs, zFile, pFile, flags, pOutFlags);
if( rc!=SQLITE_OK ){
@@ -14001,12 +14949,12 @@
** true.
*/
SQLITE_API int sqlite3_vfs_register(sqlite3_vfs *pVfs, int makeDflt){
- sqlite3_mutex *mutex = 0;
+ MUTEX_LOGIC(sqlite3_mutex *mutex;)
#ifndef SQLITE_OMIT_AUTOINIT
int rc = sqlite3_initialize();
if( rc ) return rc;
#endif
- mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+ MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
sqlite3_mutex_enter(mutex);
vfsUnlink(pVfs);
if( makeDflt || vfsList==0 ){
@@ -14214,6 +15162,47 @@
#ifdef SQLITE_SYSTEM_MALLOC
/*
+** Windows systems have malloc_usable_size() but it is called _msize()
+*/
+#if !defined(HAVE_MALLOC_USABLE_SIZE) && SQLITE_OS_WIN
+# define HAVE_MALLOC_USABLE_SIZE 1
+# define malloc_usable_size _msize
+#endif
+
+#if defined(__APPLE__)
+
+/*
+** Use the zone allocator available on apple products
+*/
+#include <sys/sysctl.h>
+#include <malloc/malloc.h>
+#include <libkern/OSAtomic.h>
+static malloc_zone_t* _sqliteZone_;
+#define SQLITE_MALLOC(x) malloc_zone_malloc(_sqliteZone_, (x))
+#define SQLITE_FREE(x) malloc_zone_free(_sqliteZone_, (x));
+#define SQLITE_REALLOC(x,y) malloc_zone_realloc(_sqliteZone_, (x), (y))
+#define SQLITE_MALLOCSIZE(x) \
+ (_sqliteZone_ ? _sqliteZone_->size(_sqliteZone_,x) : malloc_size(x))
+
+#else /* if not __APPLE__ */
+
+/*
+** Use standard C library malloc and free on non-Apple systems.
+*/
+#define SQLITE_MALLOC(x) malloc(x)
+#define SQLITE_FREE(x) free(x)
+#define SQLITE_REALLOC(x,y) realloc((x),(y))
+
+#ifdef HAVE_MALLOC_USABLE_SIZE
+#include <malloc.h>
+#define SQLITE_MALLOCSIZE(x) malloc_usable_size(x)
+#else
+#undef SQLITE_MALLOCSIZE
+#endif
+
+#endif /* __APPLE__ or not __APPLE__ */
+
+/*
** Like malloc(), but remember the size of the allocation
** so that we can find it later using sqlite3MemSize().
**
@@ -14222,10 +15211,18 @@
** routines.
*/
static void *sqlite3MemMalloc(int nByte){
+#ifdef SQLITE_MALLOCSIZE
+ void *p = SQLITE_MALLOC( nByte );
+ if( p==0 ){
+ testcase( sqlite3GlobalConfig.xLog!=0 );
+ sqlite3_log(SQLITE_NOMEM, "failed to allocate %u bytes of memory", nByte);
+ }
+ return p;
+#else
sqlite3_int64 *p;
assert( nByte>0 );
nByte = ROUND8(nByte);
- p = malloc( nByte+8 );
+ p = SQLITE_MALLOC( nByte+8 );
if( p ){
p[0] = nByte;
p++;
@@ -14234,6 +15231,7 @@
sqlite3_log(SQLITE_NOMEM, "failed to allocate %u bytes of memory", nByte);
}
return (void *)p;
+#endif
}
/*
@@ -14245,10 +15243,14 @@
** by higher-level routines.
*/
static void sqlite3MemFree(void *pPrior){
+#ifdef SQLITE_MALLOCSIZE
+ SQLITE_FREE(pPrior);
+#else
sqlite3_int64 *p = (sqlite3_int64*)pPrior;
assert( pPrior!=0 );
p--;
- free(p);
+ SQLITE_FREE(p);
+#endif
}
/*
@@ -14256,11 +15258,15 @@
** or xRealloc().
*/
static int sqlite3MemSize(void *pPrior){
+#ifdef SQLITE_MALLOCSIZE
+ return pPrior ? (int)SQLITE_MALLOCSIZE(pPrior) : 0;
+#else
sqlite3_int64 *p;
if( pPrior==0 ) return 0;
p = (sqlite3_int64*)pPrior;
p--;
return (int)p[0];
+#endif
}
/*
@@ -14274,11 +15280,21 @@
** routines and redirected to xFree.
*/
static void *sqlite3MemRealloc(void *pPrior, int nByte){
+#ifdef SQLITE_MALLOCSIZE
+ void *p = SQLITE_REALLOC(pPrior, nByte);
+ if( p==0 ){
+ testcase( sqlite3GlobalConfig.xLog!=0 );
+ sqlite3_log(SQLITE_NOMEM,
+ "failed memory resize %u to %u bytes",
+ SQLITE_MALLOCSIZE(pPrior), nByte);
+ }
+ return p;
+#else
sqlite3_int64 *p = (sqlite3_int64*)pPrior;
assert( pPrior!=0 && nByte>0 );
assert( nByte==ROUND8(nByte) ); /* EV: R-46199-30249 */
p--;
- p = realloc(p, nByte+8 );
+ p = SQLITE_REALLOC(p, nByte+8 );
if( p ){
p[0] = nByte;
p++;
@@ -14289,6 +15305,7 @@
sqlite3MemSize(pPrior), nByte);
}
return (void*)p;
+#endif
}
/*
@@ -14302,6 +15319,34 @@
** Initialize this module.
*/
static int sqlite3MemInit(void *NotUsed){
+#if defined(__APPLE__)
+ int cpuCount;
+ size_t len;
+ if( _sqliteZone_ ){
+ return SQLITE_OK;
+ }
+ len = sizeof(cpuCount);
+ /* One usually wants to use hw.acctivecpu for MT decisions, but not here */
+ sysctlbyname("hw.ncpu", &cpuCount, &len, NULL, 0);
+ if( cpuCount>1 ){
+ /* defer MT decisions to system malloc */
+ _sqliteZone_ = malloc_default_zone();
+ }else{
+ /* only 1 core, use our own zone to contention over global locks,
+ ** e.g. we have our own dedicated locks */
+ bool success;
+ malloc_zone_t* newzone = malloc_create_zone(4096, 0);
+ malloc_set_zone_name(newzone, "Sqlite_Heap");
+ do{
+ success = OSAtomicCompareAndSwapPtrBarrier(NULL, newzone,
+ (void * volatile *)&_sqliteZone_);
+ }while(!_sqliteZone_);
+ if( !success ){
+ /* somebody registered a zone first */
+ malloc_destroy_zone(newzone);
+ }
+ }
+#endif
UNUSED_PARAMETER(NotUsed);
return SQLITE_OK;
}
@@ -14376,6 +15421,7 @@
# define backtrace(A,B) 1
# define backtrace_symbols_fd(A,B,C)
#endif
+/* #include <stdio.h> */
/*
** Each memory allocation looks like this:
@@ -15301,7 +16347,7 @@
** This function assumes that the necessary mutexes, if any, are
** already held by the caller. Hence "Unsafe".
*/
-void memsys3FreeUnsafe(void *pOld){
+static void memsys3FreeUnsafe(void *pOld){
Mem3Block *p = (Mem3Block*)pOld;
int i;
u32 size, x;
@@ -15376,7 +16422,7 @@
/*
** Free memory.
*/
-void memsys3Free(void *pPrior){
+static void memsys3Free(void *pPrior){
assert( pPrior );
memsys3Enter();
memsys3FreeUnsafe(pPrior);
@@ -15386,7 +16432,7 @@
/*
** Change the size of an existing memory allocation
*/
-void *memsys3Realloc(void *pPrior, int nBytes){
+static void *memsys3Realloc(void *pPrior, int nBytes){
int nOld;
void *p;
if( pPrior==0 ){
@@ -15684,7 +16730,7 @@
*/
u8 *aCtrl;
-} mem5 = { 0 };
+} mem5;
/*
** Access the static variable through a macro for SQLITE_OMIT_WSD
@@ -15999,7 +17045,7 @@
*/
static int memsys5Log(int iValue){
int iLog;
- for(iLog=0; (1<<iLog)<iValue; iLog++);
+ for(iLog=0; (iLog<(int)((sizeof(int)*8)-1)) && (1<<iLog)<iValue; iLog++);
return iLog;
}
@@ -16030,6 +17076,7 @@
zByte = (u8*)sqlite3GlobalConfig.pHeap;
assert( zByte!=0 ); /* sqlite3_config() does not allow otherwise */
+ /* boundaries on sqlite3GlobalConfig.mnReq are enforced in sqlite3_config() */
nMinLog = memsys5Log(sqlite3GlobalConfig.mnReq);
mem5.szAtom = (1<<nMinLog);
while( (int)sizeof(Mem5Link)>mem5.szAtom ){
@@ -16289,7 +17336,7 @@
}
#endif
-#endif /* SQLITE_MUTEX_OMIT */
+#endif /* !defined(SQLITE_MUTEX_OMIT) */
/************** End of mutex.c ***********************************************/
/************** Begin file mutex_noop.c **************************************/
@@ -16496,8 +17543,8 @@
SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
return sqlite3NoopMutex();
}
-#endif /* SQLITE_MUTEX_NOOP */
-#endif /* SQLITE_MUTEX_OMIT */
+#endif /* defined(SQLITE_MUTEX_NOOP) */
+#endif /* !defined(SQLITE_MUTEX_OMIT) */
/************** End of mutex_noop.c ******************************************/
/************** Begin file mutex_os2.c ***************************************/
@@ -16533,11 +17580,16 @@
struct sqlite3_mutex {
HMTX mutex; /* Mutex controlling the lock */
int id; /* Mutex type */
- int nRef; /* Number of references */
- TID owner; /* Thread holding this mutex */
+#ifdef SQLITE_DEBUG
+ int trace; /* True to trace changes */
+#endif
};
-#define OS2_MUTEX_INITIALIZER 0,0,0,0
+#ifdef SQLITE_DEBUG
+#define SQLITE3_MUTEX_INITIALIZER { 0, 0, 0 }
+#else
+#define SQLITE3_MUTEX_INITIALIZER { 0, 0 }
+#endif
/*
** Initialize and deinitialize the mutex subsystem.
@@ -16553,11 +17605,14 @@
** to sqlite3_mutex_alloc() is one of these integer constants:
**
** <ul>
-** <li> SQLITE_MUTEX_FAST 0
-** <li> SQLITE_MUTEX_RECURSIVE 1
-** <li> SQLITE_MUTEX_STATIC_MASTER 2
-** <li> SQLITE_MUTEX_STATIC_MEM 3
-** <li> SQLITE_MUTEX_STATIC_PRNG 4
+** <li> SQLITE_MUTEX_FAST
+** <li> SQLITE_MUTEX_RECURSIVE
+** <li> SQLITE_MUTEX_STATIC_MASTER
+** <li> SQLITE_MUTEX_STATIC_MEM
+** <li> SQLITE_MUTEX_STATIC_MEM2
+** <li> SQLITE_MUTEX_STATIC_PRNG
+** <li> SQLITE_MUTEX_STATIC_LRU
+** <li> SQLITE_MUTEX_STATIC_LRU2
** </ul>
**
** The first two constants cause sqlite3_mutex_alloc() to create
@@ -16571,7 +17626,7 @@
** might return such a mutex in response to SQLITE_MUTEX_FAST.
**
** The other allowed parameters to sqlite3_mutex_alloc() each return
-** a pointer to a static preexisting mutex. Three static mutexes are
+** a pointer to a static preexisting mutex. Six static mutexes are
** used by the current version of SQLite. Future versions of SQLite
** may add additional static mutexes. Static mutexes are for internal
** use by SQLite only. Applications that use SQLite mutexes should
@@ -16601,13 +17656,13 @@
}
default: {
static volatile int isInit = 0;
- static sqlite3_mutex staticMutexes[] = {
- { OS2_MUTEX_INITIALIZER, },
- { OS2_MUTEX_INITIALIZER, },
- { OS2_MUTEX_INITIALIZER, },
- { OS2_MUTEX_INITIALIZER, },
- { OS2_MUTEX_INITIALIZER, },
- { OS2_MUTEX_INITIALIZER, },
+ static sqlite3_mutex staticMutexes[6] = {
+ SQLITE3_MUTEX_INITIALIZER,
+ SQLITE3_MUTEX_INITIALIZER,
+ SQLITE3_MUTEX_INITIALIZER,
+ SQLITE3_MUTEX_INITIALIZER,
+ SQLITE3_MUTEX_INITIALIZER,
+ SQLITE3_MUTEX_INITIALIZER,
};
if ( !isInit ){
APIRET rc;
@@ -16653,9 +17708,14 @@
** SQLite is careful to deallocate every mutex that it allocates.
*/
static void os2MutexFree(sqlite3_mutex *p){
- if( p==0 ) return;
- assert( p->nRef==0 );
+#ifdef SQLITE_DEBUG
+ TID tid;
+ PID pid;
+ ULONG ulCount;
+ DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount);
+ assert( ulCount==0 );
assert( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE );
+#endif
DosCloseMutexSem( p->mutex );
sqlite3_free( p );
}
@@ -16670,26 +17730,29 @@
PID pid;
ULONG ulCount;
PTIB ptib;
- if( p!=0 ) {
- DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount);
- } else {
- DosGetInfoBlocks(&ptib, NULL);
- tid = ptib->tib_ptib2->tib2_ultid;
- }
- return p==0 || (p->nRef!=0 && p->owner==tid);
+ DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount);
+ if( ulCount==0 || ( ulCount>1 && p->id!=SQLITE_MUTEX_RECURSIVE ) )
+ return 0;
+ DosGetInfoBlocks(&ptib, NULL);
+ return tid==ptib->tib_ptib2->tib2_ultid;
}
static int os2MutexNotheld(sqlite3_mutex *p){
TID tid;
PID pid;
ULONG ulCount;
PTIB ptib;
- if( p!= 0 ) {
- DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount);
- } else {
- DosGetInfoBlocks(&ptib, NULL);
- tid = ptib->tib_ptib2->tib2_ultid;
- }
- return p==0 || p->nRef==0 || p->owner!=tid;
+ DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount);
+ if( ulCount==0 )
+ return 1;
+ DosGetInfoBlocks(&ptib, NULL);
+ return tid!=ptib->tib_ptib2->tib2_ultid;
+}
+static void os2MutexTrace(sqlite3_mutex *p, char *pAction){
+ TID tid;
+ PID pid;
+ ULONG ulCount;
+ DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount);
+ printf("%s mutex %p (%d) with nRef=%ld\n", pAction, (void*)p, p->trace, ulCount);
}
#endif
@@ -16705,32 +17768,21 @@
** more than once, the behavior is undefined.
*/
static void os2MutexEnter(sqlite3_mutex *p){
- TID tid;
- PID holder1;
- ULONG holder2;
- if( p==0 ) return;
assert( p->id==SQLITE_MUTEX_RECURSIVE || os2MutexNotheld(p) );
DosRequestMutexSem(p->mutex, SEM_INDEFINITE_WAIT);
- DosQueryMutexSem(p->mutex, &holder1, &tid, &holder2);
- p->owner = tid;
- p->nRef++;
+#ifdef SQLITE_DEBUG
+ if( p->trace ) os2MutexTrace(p, "enter");
+#endif
}
static int os2MutexTry(sqlite3_mutex *p){
- int rc;
- TID tid;
- PID holder1;
- ULONG holder2;
- if( p==0 ) return SQLITE_OK;
+ int rc = SQLITE_BUSY;
assert( p->id==SQLITE_MUTEX_RECURSIVE || os2MutexNotheld(p) );
- if( DosRequestMutexSem(p->mutex, SEM_IMMEDIATE_RETURN) == NO_ERROR) {
- DosQueryMutexSem(p->mutex, &holder1, &tid, &holder2);
- p->owner = tid;
- p->nRef++;
+ if( DosRequestMutexSem(p->mutex, SEM_IMMEDIATE_RETURN) == NO_ERROR ) {
rc = SQLITE_OK;
- } else {
- rc = SQLITE_BUSY;
+#ifdef SQLITE_DEBUG
+ if( p->trace ) os2MutexTrace(p, "try");
+#endif
}
-
return rc;
}
@@ -16741,16 +17793,11 @@
** is not currently allocated. SQLite will never do either.
*/
static void os2MutexLeave(sqlite3_mutex *p){
- TID tid;
- PID holder1;
- ULONG holder2;
- if( p==0 ) return;
- assert( p->nRef>0 );
- DosQueryMutexSem(p->mutex, &holder1, &tid, &holder2);
- assert( p->owner==tid );
- p->nRef--;
- assert( p->nRef==0 || p->id==SQLITE_MUTEX_RECURSIVE );
+ assert( os2MutexHeld(p) );
DosReleaseMutexSem(p->mutex);
+#ifdef SQLITE_DEBUG
+ if( p->trace ) os2MutexTrace(p, "leave");
+#endif
}
SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
@@ -16765,6 +17812,9 @@
#ifdef SQLITE_DEBUG
os2MutexHeld,
os2MutexNotheld
+#else
+ 0,
+ 0
#endif
};
@@ -16874,7 +17924,7 @@
** <li> SQLITE_MUTEX_STATIC_MEM2
** <li> SQLITE_MUTEX_STATIC_PRNG
** <li> SQLITE_MUTEX_STATIC_LRU
-** <li> SQLITE_MUTEX_STATIC_LRU2
+** <li> SQLITE_MUTEX_STATIC_PMEM
** </ul>
**
** The first two constants cause sqlite3_mutex_alloc() to create
@@ -17123,7 +18173,7 @@
return &sMutex;
}
-#endif /* SQLITE_MUTEX_PTHREAD */
+#endif /* SQLITE_MUTEX_PTHREADS */
/************** End of mutex_unix.c ******************************************/
/************** Begin file mutex_w32.c ***************************************/
@@ -17284,7 +18334,7 @@
** <li> SQLITE_MUTEX_STATIC_MEM2
** <li> SQLITE_MUTEX_STATIC_PRNG
** <li> SQLITE_MUTEX_STATIC_LRU
-** <li> SQLITE_MUTEX_STATIC_LRU2
+** <li> SQLITE_MUTEX_STATIC_PMEM
** </ul>
**
** The first two constants cause sqlite3_mutex_alloc() to create
@@ -17408,7 +18458,7 @@
#endif
#ifdef SQLITE_DEBUG
if( rc==SQLITE_OK && p->trace ){
- printf("enter mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef);
+ printf("try mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef);
}
#endif
return rc;
@@ -17475,6 +18525,7 @@
**
** Memory allocation functions used throughout sqlite.
*/
+/* #include <stdarg.h> */
/*
** Attempt to release up to n bytes of non-essential memory currently
@@ -17591,7 +18642,8 @@
sqlite3_int64 priorLimit;
sqlite3_int64 excess;
#ifndef SQLITE_OMIT_AUTOINIT
- sqlite3_initialize();
+ int rc = sqlite3_initialize();
+ if( rc ) return -1;
#endif
sqlite3_mutex_enter(mem0.mutex);
priorLimit = mem0.alarmThreshold;
@@ -17727,7 +18779,7 @@
sqlite3StatusSet(SQLITE_STATUS_MALLOC_SIZE, n);
if( mem0.alarmCallback!=0 ){
int nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
- if( nUsed+nFull >= mem0.alarmThreshold ){
+ if( nUsed >= mem0.alarmThreshold - nFull ){
mem0.nearlyFull = 1;
sqlite3MallocAlarm(nFull);
}else{
@@ -17865,7 +18917,7 @@
pSlot->pNext = mem0.pScratchFree;
mem0.pScratchFree = pSlot;
mem0.nScratchFree++;
- assert( mem0.nScratchFree<=sqlite3GlobalConfig.nScratch );
+ assert( mem0.nScratchFree <= (u32)sqlite3GlobalConfig.nScratch );
sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_USED, -1);
sqlite3_mutex_leave(mem0.mutex);
}else{
@@ -17968,7 +19020,7 @@
** Change the size of an existing memory allocation
*/
SQLITE_PRIVATE void *sqlite3Realloc(void *pOld, int nBytes){
- int nOld, nNew;
+ int nOld, nNew, nDiff;
void *pNew;
if( pOld==0 ){
return sqlite3Malloc(nBytes); /* IMP: R-28354-25769 */
@@ -17991,9 +19043,10 @@
}else if( sqlite3GlobalConfig.bMemstat ){
sqlite3_mutex_enter(mem0.mutex);
sqlite3StatusSet(SQLITE_STATUS_MALLOC_SIZE, nBytes);
- if( sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED)+nNew-nOld >=
- mem0.alarmThreshold ){
- sqlite3MallocAlarm(nNew-nOld);
+ nDiff = nNew - nOld;
+ if( sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED) >=
+ mem0.alarmThreshold-nDiff ){
+ sqlite3MallocAlarm(nDiff);
}
assert( sqlite3MemdebugHasType(pOld, MEMTYPE_HEAP) );
assert( sqlite3MemdebugNoType(pOld, ~MEMTYPE_HEAP) );
@@ -18077,14 +19130,20 @@
if( db->mallocFailed ){
return 0;
}
- if( db->lookaside.bEnabled && n<=db->lookaside.sz
- && (pBuf = db->lookaside.pFree)!=0 ){
- db->lookaside.pFree = pBuf->pNext;
- db->lookaside.nOut++;
- if( db->lookaside.nOut>db->lookaside.mxOut ){
- db->lookaside.mxOut = db->lookaside.nOut;
+ if( db->lookaside.bEnabled ){
+ if( n>db->lookaside.sz ){
+ db->lookaside.anStat[1]++;
+ }else if( (pBuf = db->lookaside.pFree)==0 ){
+ db->lookaside.anStat[2]++;
+ }else{
+ db->lookaside.pFree = pBuf->pNext;
+ db->lookaside.nOut++;
+ db->lookaside.anStat[0]++;
+ if( db->lookaside.nOut>db->lookaside.mxOut ){
+ db->lookaside.mxOut = db->lookaside.nOut;
+ }
+ return (void*)pBuf;
}
- return (void*)pBuf;
}
}
#else
@@ -18241,48 +19300,10 @@
**
**************************************************************************
**
-** The following modules is an enhanced replacement for the "printf" subroutines
-** found in the standard C library. The following enhancements are
-** supported:
-**
-** + Additional functions. The standard set of "printf" functions
-** includes printf, fprintf, sprintf, vprintf, vfprintf, and
-** vsprintf. This module adds the following:
-**
-** * snprintf -- Works like sprintf, but has an extra argument
-** which is the size of the buffer written to.
-**
-** * mprintf -- Similar to sprintf. Writes output to memory
-** obtained from malloc.
-**
-** * xprintf -- Calls a function to dispose of output.
-**
-** * nprintf -- No output, but returns the number of characters
-** that would have been output by printf.
-**
-** * A v- version (ex: vsnprintf) of every function is also
-** supplied.
-**
-** + A few extensions to the formatting notation are supported:
-**
-** * The "=" flag (similar to "-") causes the output to be
-** be centered in the appropriately sized field.
-**
-** * The %b field outputs an integer in binary notation.
-**
-** * The %c field now accepts a precision. The character output
-** is repeated by the number of times the precision specifies.
-**
-** * The %' field works like %c, but takes as its character the
-** next character of the format string, instead of the next
-** argument. For example, printf("%.78'-") prints 78 minus
-** signs, the same as printf("%.78c",'-').
-**
-** + When compiled using GCC on a SPARC, this version of printf is
-** faster than the library printf for SUN OS 4.1.
-**
-** + All functions are fully reentrant.
-**
+** This file contains code for a set of "printf"-like routines. These
+** routines format strings much like the printf() from the standard C
+** library, though the implementation here has enhancements to support
+** SQLlite.
*/
/*
@@ -18407,7 +19428,7 @@
/*
** Append N space characters to the given string buffer.
*/
-static void appendSpace(StrAccum *pAccum, int N){
+SQLITE_PRIVATE void sqlite3AppendSpace(StrAccum *pAccum, int N){
static const char zSpaces[] = " ";
while( N>=(int)sizeof(zSpaces)-1 ){
sqlite3StrAccumAppend(pAccum, zSpaces, sizeof(zSpaces)-1);
@@ -18420,43 +19441,15 @@
/*
** On machines with a small stack size, you can redefine the
-** SQLITE_PRINT_BUF_SIZE to be less than 350.
+** SQLITE_PRINT_BUF_SIZE to be something smaller, if desired.
*/
#ifndef SQLITE_PRINT_BUF_SIZE
-# if defined(SQLITE_SMALL_STACK)
-# define SQLITE_PRINT_BUF_SIZE 50
-# else
-# define SQLITE_PRINT_BUF_SIZE 350
-# endif
+# define SQLITE_PRINT_BUF_SIZE 70
#endif
#define etBUFSIZE SQLITE_PRINT_BUF_SIZE /* Size of the output buffer */
/*
-** The root program. All variations call this core.
-**
-** INPUTS:
-** func This is a pointer to a function taking three arguments
-** 1. A pointer to anything. Same as the "arg" parameter.
-** 2. A pointer to the list of characters to be output
-** (Note, this list is NOT null terminated.)
-** 3. An integer number of characters to be output.
-** (Note: This number might be zero.)
-**
-** arg This is the pointer to anything which will be passed as the
-** first argument to "func". Use it for whatever you like.
-**
-** fmt This is the format string, as in the usual print.
-**
-** ap This is a pointer to a list of arguments. Same as in
-** vfprint.
-**
-** OUTPUTS:
-** The return value is the total number of characters sent to
-** the function "func". Returns -1 on a error.
-**
-** Note that the order in which automatic variables are declared below
-** seems to make a big difference in determining how fast this beast
-** will run.
+** Render a string given by "fmt" into the StrAccum object.
*/
SQLITE_PRIVATE void sqlite3VXPrintf(
StrAccum *pAccum, /* Accumulate results here */
@@ -18479,23 +19472,23 @@
etByte flag_long; /* True if "l" flag is present */
etByte flag_longlong; /* True if the "ll" flag is present */
etByte done; /* Loop termination flag */
+ etByte xtype = 0; /* Conversion paradigm */
+ char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */
sqlite_uint64 longvalue; /* Value for integer types */
LONGDOUBLE_TYPE realvalue; /* Value for real types */
const et_info *infop; /* Pointer to the appropriate info structure */
- char buf[etBUFSIZE]; /* Conversion buffer */
- char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */
- etByte xtype = 0; /* Conversion paradigm */
- char *zExtra; /* Extra memory used for etTCLESCAPE conversions */
+ char *zOut; /* Rendering buffer */
+ int nOut; /* Size of the rendering buffer */
+ char *zExtra; /* Malloced memory used by some conversion */
#ifndef SQLITE_OMIT_FLOATING_POINT
int exp, e2; /* exponent of real numbers */
+ int nsd; /* Number of significant digits returned */
double rounder; /* Used for rounding floating point values */
etByte flag_dp; /* True if decimal point should be shown */
etByte flag_rtz; /* True if trailing zeros should be removed */
- etByte flag_exp; /* True to force display of the exponent */
- int nsd; /* Number of significant digits returned */
#endif
+ char buf[etBUFSIZE]; /* Conversion buffer */
- length = 0;
bufpt = 0;
for(; (c=(*fmt))!=0; ++fmt){
if( c!='%' ){
@@ -18540,9 +19533,6 @@
c = *++fmt;
}
}
- if( width > etBUFSIZE-10 ){
- width = etBUFSIZE-10;
- }
/* Get the precision */
if( c=='.' ){
precision = 0;
@@ -18589,12 +19579,6 @@
}
zExtra = 0;
-
- /* Limit the precision to prevent overflowing buf[] during conversion */
- if( precision>etBUFSIZE-40 && (infop->flags & FLAG_STRING)==0 ){
- precision = etBUFSIZE-40;
- }
-
/*
** At this point, variables are initialized as follows:
**
@@ -18633,7 +19617,11 @@
v = va_arg(ap,int);
}
if( v<0 ){
- longvalue = -v;
+ if( v==SMALLEST_INT64 ){
+ longvalue = ((u64)1)<<63;
+ }else{
+ longvalue = -v;
+ }
prefix = '-';
}else{
longvalue = v;
@@ -18655,16 +19643,26 @@
if( flag_zeropad && precision<width-(prefix!=0) ){
precision = width-(prefix!=0);
}
- bufpt = &buf[etBUFSIZE-1];
+ if( precision<etBUFSIZE-10 ){
+ nOut = etBUFSIZE;
+ zOut = buf;
+ }else{
+ nOut = precision + 10;
+ zOut = zExtra = sqlite3Malloc( nOut );
+ if( zOut==0 ){
+ pAccum->mallocFailed = 1;
+ return;
+ }
+ }
+ bufpt = &zOut[nOut-1];
if( xtype==etORDINAL ){
static const char zOrd[] = "thstndrd";
int x = (int)(longvalue % 10);
if( x>=4 || (longvalue/10)%10==1 ){
x = 0;
}
- buf[etBUFSIZE-3] = zOrd[x*2];
- buf[etBUFSIZE-2] = zOrd[x*2+1];
- bufpt -= 2;
+ *(--bufpt) = zOrd[x*2+1];
+ *(--bufpt) = zOrd[x*2];
}
{
register const char *cset; /* Use registers for speed */
@@ -18676,7 +19674,7 @@
longvalue = longvalue/base;
}while( longvalue>0 );
}
- length = (int)(&buf[etBUFSIZE-1]-bufpt);
+ length = (int)(&zOut[nOut-1]-bufpt);
for(idx=precision-length; idx>0; idx--){
*(--bufpt) = '0'; /* Zero pad */
}
@@ -18687,7 +19685,7 @@
pre = &aPrefix[infop->prefix];
for(; (x=(*pre))!=0; pre++) *(--bufpt) = x;
}
- length = (int)(&buf[etBUFSIZE-1]-bufpt);
+ length = (int)(&zOut[nOut-1]-bufpt);
break;
case etFLOAT:
case etEXP:
@@ -18697,7 +19695,6 @@
length = 0;
#else
if( precision<0 ) precision = 6; /* Set default precision */
- if( precision>etBUFSIZE/2-10 ) precision = etBUFSIZE/2-10;
if( realvalue<0.0 ){
realvalue = -realvalue;
prefix = '-';
@@ -18745,7 +19742,6 @@
** If the field type is etGENERIC, then convert to either etEXP
** or etFLOAT, as appropriate.
*/
- flag_exp = xtype==etEXP;
if( xtype!=etFLOAT ){
realvalue += rounder;
if( realvalue>=10.0 ){ realvalue *= 0.1; exp++; }
@@ -18766,6 +19762,14 @@
}else{
e2 = exp;
}
+ if( e2+precision+width > etBUFSIZE - 15 ){
+ bufpt = zExtra = sqlite3Malloc( e2+precision+width+15 );
+ if( bufpt==0 ){
+ pAccum->mallocFailed = 1;
+ return;
+ }
+ }
+ zOut = bufpt;
nsd = 0;
flag_dp = (precision>0 ?1:0) | flag_alternateform | flag_altform2;
/* The sign in front of the number */
@@ -18797,7 +19801,7 @@
/* Remove trailing zeros and the "." if no digits follow the "." */
if( flag_rtz && flag_dp ){
while( bufpt[-1]=='0' ) *(--bufpt) = 0;
- assert( bufpt>buf );
+ assert( bufpt>zOut );
if( bufpt[-1]=='.' ){
if( flag_altform2 ){
*(bufpt++) = '0';
@@ -18807,7 +19811,7 @@
}
}
/* Add the "eNNN" suffix */
- if( flag_exp || xtype==etEXP ){
+ if( xtype==etEXP ){
*(bufpt++) = aDigits[infop->charset];
if( exp<0 ){
*(bufpt++) = '-'; exp = -exp;
@@ -18826,8 +19830,8 @@
/* The converted number is in buf[] and zero terminated. Output it.
** Note that the number is in the usual order, not reversed as with
** integer conversions. */
- length = (int)(bufpt-buf);
- bufpt = buf;
+ length = (int)(bufpt-zOut);
+ bufpt = zOut;
/* Special case: Add leading zeros if the flag_zeropad flag is
** set and we are not left justified */
@@ -18952,7 +19956,7 @@
register int nspace;
nspace = width-length;
if( nspace>0 ){
- appendSpace(pAccum, nspace);
+ sqlite3AppendSpace(pAccum, nspace);
}
}
if( length>0 ){
@@ -18962,12 +19966,10 @@
register int nspace;
nspace = width-length;
if( nspace>0 ){
- appendSpace(pAccum, nspace);
+ sqlite3AppendSpace(pAccum, nspace);
}
}
- if( zExtra ){
- sqlite3_free(zExtra);
- }
+ sqlite3_free(zExtra);
}/* End for loop over the format string */
} /* End of function */
@@ -18981,6 +19983,7 @@
testcase(p->mallocFailed);
return;
}
+ assert( p->zText!=0 || p->nChar==0 );
if( N<0 ){
N = sqlite3Strlen30(z);
}
@@ -18996,6 +19999,7 @@
return;
}
}else{
+ char *zOld = (p->zText==p->zBase ? 0 : p->zText);
i64 szNew = p->nChar;
szNew += N + 1;
if( szNew > p->mxAlloc ){
@@ -19006,13 +20010,12 @@
p->nAlloc = (int)szNew;
}
if( p->useMalloc==1 ){
- zNew = sqlite3DbMallocRaw(p->db, p->nAlloc );
+ zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc);
}else{
- zNew = sqlite3_malloc(p->nAlloc);
+ zNew = sqlite3_realloc(zOld, p->nAlloc);
}
if( zNew ){
- memcpy(zNew, p->zText, p->nChar);
- sqlite3StrAccumReset(p);
+ if( zOld==0 && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar);
p->zText = zNew;
}else{
p->mallocFailed = 1;
@@ -19021,6 +20024,7 @@
}
}
}
+ assert( p->zText );
memcpy(&p->zText[p->nChar], z, N);
p->nChar += N;
}
@@ -19167,21 +20171,28 @@
** current locale settings. This is important for SQLite because we
** are not able to use a "," as the decimal point in place of "." as
** specified by some locales.
+**
+** Oops: The first two arguments of sqlite3_snprintf() are backwards
+** from the snprintf() standard. Unfortunately, it is too late to change
+** this without breaking compatibility, so we just have to live with the
+** mistake.
+**
+** sqlite3_vsnprintf() is the varargs version.
*/
+SQLITE_API char *sqlite3_vsnprintf(int n, char *zBuf, const char *zFormat, va_list ap){
+ StrAccum acc;
+ if( n<=0 ) return zBuf;
+ sqlite3StrAccumInit(&acc, zBuf, n, 0);
+ acc.useMalloc = 0;
+ sqlite3VXPrintf(&acc, 0, zFormat, ap);
+ return sqlite3StrAccumFinish(&acc);
+}
SQLITE_API char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){
char *z;
va_list ap;
- StrAccum acc;
-
- if( n<=0 ){
- return zBuf;
- }
- sqlite3StrAccumInit(&acc, zBuf, n, 0);
- acc.useMalloc = 0;
va_start(ap,zFormat);
- sqlite3VXPrintf(&acc, 0, zFormat, ap);
+ z = sqlite3_vsnprintf(n, zBuf, zFormat, ap);
va_end(ap);
- z = sqlite3StrAccumFinish(&acc);
return z;
}
@@ -19434,6 +20445,7 @@
** 0xfe 0xff big-endian utf-16 follows
**
*/
+/* #include <assert.h> */
#ifndef SQLITE_AMALGAMATION
/*
@@ -19561,11 +20573,11 @@
|| (c&0xFFFFF800)==0xD800 \
|| (c&0xFFFFFFFE)==0xFFFE ){ c = 0xFFFD; } \
}
-SQLITE_PRIVATE int sqlite3Utf8Read(
+SQLITE_PRIVATE u32 sqlite3Utf8Read(
const unsigned char *zIn, /* First byte of UTF-8 character */
const unsigned char **pzNext /* Write first byte past UTF-8 char here */
){
- int c;
+ unsigned int c;
/* Same as READ_UTF8() above but without the zTerm parameter.
** For this routine, we assume the UTF8 string is always zero-terminated.
@@ -19808,15 +20820,15 @@
** This has the effect of making sure that the string is well-formed
** UTF-8. Miscoded characters are removed.
**
-** The translation is done in-place (since it is impossible for the
-** correct UTF-8 encoding to be longer than a malformed encoding).
+** The translation is done in-place and aborted if the output
+** overruns the input.
*/
SQLITE_PRIVATE int sqlite3Utf8To8(unsigned char *zIn){
unsigned char *zOut = zIn;
unsigned char *zStart = zIn;
u32 c;
- while( zIn[0] ){
+ while( zIn[0] && zOut<=zIn ){
c = sqlite3Utf8Read(zIn, (const u8**)&zIn);
if( c!=0xfffd ){
WRITE_UTF8(zOut, c);
@@ -19862,7 +20874,7 @@
** If a malloc failure occurs, NULL is returned and the db.mallocFailed
** flag set.
*/
-#ifdef SQLITE_ENABLE_STAT2
+#ifdef SQLITE_ENABLE_STAT3
SQLITE_PRIVATE char *sqlite3Utf8to16(sqlite3 *db, u8 enc, char *z, int n, int *pnOut){
Mem m;
memset(&m, 0, sizeof(m));
@@ -19976,6 +20988,7 @@
** strings, and stuff like that.
**
*/
+/* #include <stdarg.h> */
#ifdef SQLITE_HAVE_ISNAN
# include <math.h>
#endif
@@ -19985,8 +20998,8 @@
*/
#ifdef SQLITE_COVERAGE_TEST
SQLITE_PRIVATE void sqlite3Coverage(int x){
- static int dummy = 0;
- dummy += x;
+ static unsigned dummy = 0;
+ dummy += (unsigned)x;
}
#endif
@@ -20290,7 +21303,7 @@
}
/* copy digits to exponent */
while( z<zEnd && sqlite3Isdigit(*z) ){
- e = e*10 + (*z - '0');
+ e = e<10000 ? (e*10 + (*z - '0')) : 10000;
z+=incr;
eValid = 1;
}
@@ -20341,6 +21354,12 @@
result = s * scale;
result *= 1.0e+308;
}
+ }else if( e>=342 ){
+ if( esign<0 ){
+ result = 0.0*s;
+ }else{
+ result = 1e308*1e308*s; /* Infinity */
+ }
}else{
/* 1.0e+22 is the largest power of 10 than can be
** represented exactly. */
@@ -20400,14 +21419,17 @@
/*
-** Convert zNum to a 64-bit signed integer and write
-** the value of the integer into *pNum.
-** If zNum is exactly 9223372036854665808, return 2.
-** This is a special case as the context will determine
-** if it is too big (used as a negative).
-** If zNum is not an integer or is an integer that
-** is too large to be expressed with 64 bits,
-** then return 1. Otherwise return 0.
+** Convert zNum to a 64-bit signed integer.
+**
+** If the zNum value is representable as a 64-bit twos-complement
+** integer, then write that value into *pNum and return 0.
+**
+** If zNum is exactly 9223372036854665808, return 2. This special
+** case is broken out because while 9223372036854665808 cannot be a
+** signed 64-bit integer, its negative -9223372036854665808 can be.
+**
+** If zNum is too big for a 64-bit integer and is not
+** 9223372036854665808 then return 1.
**
** length is the number of bytes in the string (bytes, not characters).
** The string is not necessarily zero-terminated. The encoding is
@@ -20415,7 +21437,7 @@
*/
SQLITE_PRIVATE int sqlite3Atoi64(const char *zNum, i64 *pNum, int length, u8 enc){
int incr = (enc==SQLITE_UTF8?1:2);
- i64 v = 0;
+ u64 u = 0;
int neg = 0; /* assume positive */
int i;
int c = 0;
@@ -20423,20 +21445,26 @@
const char *zEnd = zNum + length;
if( enc==SQLITE_UTF16BE ) zNum++;
while( zNum<zEnd && sqlite3Isspace(*zNum) ) zNum+=incr;
- if( zNum>=zEnd ) goto do_atoi_calc;
- if( *zNum=='-' ){
- neg = 1;
- zNum+=incr;
- }else if( *zNum=='+' ){
- zNum+=incr;
+ if( zNum<zEnd ){
+ if( *zNum=='-' ){
+ neg = 1;
+ zNum+=incr;
+ }else if( *zNum=='+' ){
+ zNum+=incr;
+ }
}
-do_atoi_calc:
zStart = zNum;
while( zNum<zEnd && zNum[0]=='0' ){ zNum+=incr; } /* Skip leading zeros. */
for(i=0; &zNum[i]<zEnd && (c=zNum[i])>='0' && c<='9'; i+=incr){
- v = v*10 + c - '0';
+ u = u*10 + c - '0';
}
- *pNum = neg ? -v : v;
+ if( u>LARGEST_INT64 ){
+ *pNum = SMALLEST_INT64;
+ }else if( neg ){
+ *pNum = -(i64)u;
+ }else{
+ *pNum = (i64)u;
+ }
testcase( i==18 );
testcase( i==19 );
testcase( i==20 );
@@ -20446,14 +21474,25 @@
return 1;
}else if( i<19*incr ){
/* Less than 19 digits, so we know that it fits in 64 bits */
+ assert( u<=LARGEST_INT64 );
return 0;
}else{
- /* 19-digit numbers must be no larger than 9223372036854775807 if positive
- ** or 9223372036854775808 if negative. Note that 9223372036854665808
- ** is 2^63. Return 1 if to large */
- c=compare2pow63(zNum, incr);
- if( c==0 && neg==0 ) return 2; /* too big, exactly 9223372036854665808 */
- return c<neg ? 0 : 1;
+ /* zNum is a 19-digit numbers. Compare it against 9223372036854775808. */
+ c = compare2pow63(zNum, incr);
+ if( c<0 ){
+ /* zNum is less than 9223372036854775808 so it fits */
+ assert( u<=LARGEST_INT64 );
+ return 0;
+ }else if( c>0 ){
+ /* zNum is greater than 9223372036854775808 so it overflows */
+ return 1;
+ }else{
+ /* zNum is exactly 9223372036854775808. Fits if negative. The
+ ** special case 2 overflow if positive */
+ assert( u-1==LARGEST_INT64 );
+ assert( (*pNum)==SMALLEST_INT64 );
+ return neg ? 0 : 2;
+ }
}
}
@@ -20922,13 +21961,12 @@
-#if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC)
/*
** Translate a single byte of Hex into an integer.
** This routine only works if h really is a valid hexadecimal
** character: 0..9a..fA..F
*/
-static u8 hexToInt(int h){
+SQLITE_PRIVATE u8 sqlite3HexToInt(int h){
assert( (h>='0' && h<='9') || (h>='a' && h<='f') || (h>='A' && h<='F') );
#ifdef SQLITE_ASCII
h += 9*(1&(h>>6));
@@ -20938,7 +21976,6 @@
#endif
return (u8)(h & 0xf);
}
-#endif /* !SQLITE_OMIT_BLOB_LITERAL || SQLITE_HAS_CODEC */
#if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC)
/*
@@ -20955,7 +21992,7 @@
n--;
if( zBlob ){
for(i=0; i<n; i+=2){
- zBlob[i/2] = (hexToInt(z[i])<<4) | hexToInt(z[i+1]);
+ zBlob[i/2] = (sqlite3HexToInt(z[i])<<4) | sqlite3HexToInt(z[i+1]);
}
zBlob[i/2] = 0;
}
@@ -21020,6 +22057,105 @@
}
}
+/*
+** Attempt to add, substract, or multiply the 64-bit signed value iB against
+** the other 64-bit signed integer at *pA and store the result in *pA.
+** Return 0 on success. Or if the operation would have resulted in an
+** overflow, leave *pA unchanged and return 1.
+*/
+SQLITE_PRIVATE int sqlite3AddInt64(i64 *pA, i64 iB){
+ i64 iA = *pA;
+ testcase( iA==0 ); testcase( iA==1 );
+ testcase( iB==-1 ); testcase( iB==0 );
+ if( iB>=0 ){
+ testcase( iA>0 && LARGEST_INT64 - iA == iB );
+ testcase( iA>0 && LARGEST_INT64 - iA == iB - 1 );
+ if( iA>0 && LARGEST_INT64 - iA < iB ) return 1;
+ *pA += iB;
+ }else{
+ testcase( iA<0 && -(iA + LARGEST_INT64) == iB + 1 );
+ testcase( iA<0 && -(iA + LARGEST_INT64) == iB + 2 );
+ if( iA<0 && -(iA + LARGEST_INT64) > iB + 1 ) return 1;
+ *pA += iB;
+ }
+ return 0;
+}
+SQLITE_PRIVATE int sqlite3SubInt64(i64 *pA, i64 iB){
+ testcase( iB==SMALLEST_INT64+1 );
+ if( iB==SMALLEST_INT64 ){
+ testcase( (*pA)==(-1) ); testcase( (*pA)==0 );
+ if( (*pA)>=0 ) return 1;
+ *pA -= iB;
+ return 0;
+ }else{
+ return sqlite3AddInt64(pA, -iB);
+ }
+}
+#define TWOPOWER32 (((i64)1)<<32)
+#define TWOPOWER31 (((i64)1)<<31)
+SQLITE_PRIVATE int sqlite3MulInt64(i64 *pA, i64 iB){
+ i64 iA = *pA;
+ i64 iA1, iA0, iB1, iB0, r;
+
+ iA1 = iA/TWOPOWER32;
+ iA0 = iA % TWOPOWER32;
+ iB1 = iB/TWOPOWER32;
+ iB0 = iB % TWOPOWER32;
+ if( iA1*iB1 != 0 ) return 1;
+ assert( iA1*iB0==0 || iA0*iB1==0 );
+ r = iA1*iB0 + iA0*iB1;
+ testcase( r==(-TWOPOWER31)-1 );
+ testcase( r==(-TWOPOWER31) );
+ testcase( r==TWOPOWER31 );
+ testcase( r==TWOPOWER31-1 );
+ if( r<(-TWOPOWER31) || r>=TWOPOWER31 ) return 1;
+ r *= TWOPOWER32;
+ if( sqlite3AddInt64(&r, iA0*iB0) ) return 1;
+ *pA = r;
+ return 0;
+}
+
+/*
+** Compute the absolute value of a 32-bit signed integer, of possible. Or
+** if the integer has a value of -2147483648, return +2147483647
+*/
+SQLITE_PRIVATE int sqlite3AbsInt32(int x){
+ if( x>=0 ) return x;
+ if( x==(int)0x80000000 ) return 0x7fffffff;
+ return -x;
+}
+
+#ifdef SQLITE_ENABLE_8_3_NAMES
+/*
+** If SQLITE_ENABLE_8_3_NAMES is set at compile-time and if the database
+** filename in zBaseFilename is a URI with the "8_3_names=1" parameter and
+** if filename in z[] has a suffix (a.k.a. "extension") that is longer than
+** three characters, then shorten the suffix on z[] to be the last three
+** characters of the original suffix.
+**
+** If SQLITE_ENABLE_8_3_NAMES is set to 2 at compile-time, then always
+** do the suffix shortening regardless of URI parameter.
+**
+** Examples:
+**
+** test.db-journal => test.nal
+** test.db-wal => test.wal
+** test.db-shm => test.shm
+** test.db-mj7f3319fa => test.9fa
+*/
+SQLITE_PRIVATE void sqlite3FileSuffix3(const char *zBaseFilename, char *z){
+#if SQLITE_ENABLE_8_3_NAMES<2
+ if( sqlite3_uri_boolean(zBaseFilename, "8_3_names", 0) )
+#endif
+ {
+ int i, sz;
+ sz = sqlite3Strlen30(z);
+ for(i=sz-1; i>0 && z[i]!='/' && z[i]!='.'; i--){}
+ if( z[i]=='.' && ALWAYS(sz>i+4) ) memmove(&z[i+1], &z[sz-3], 4);
+ }
+}
+#endif
+
/************** End of util.c ************************************************/
/************** Begin file hash.c ********************************************/
/*
@@ -21036,6 +22172,7 @@
** This is the implementation of generic hash-tables
** used in SQLite.
*/
+/* #include <assert.h> */
/* Turn bulk memory into a hash table object by initializing the
** fields of the Hash structure.
@@ -21330,53 +22467,53 @@
/* 23 */ "Permutation",
/* 24 */ "Compare",
/* 25 */ "Jump",
- /* 26 */ "If",
- /* 27 */ "IfNot",
- /* 28 */ "Column",
- /* 29 */ "Affinity",
- /* 30 */ "MakeRecord",
- /* 31 */ "Count",
- /* 32 */ "Savepoint",
- /* 33 */ "AutoCommit",
- /* 34 */ "Transaction",
- /* 35 */ "ReadCookie",
- /* 36 */ "SetCookie",
- /* 37 */ "VerifyCookie",
- /* 38 */ "OpenRead",
- /* 39 */ "OpenWrite",
- /* 40 */ "OpenAutoindex",
- /* 41 */ "OpenEphemeral",
- /* 42 */ "OpenPseudo",
- /* 43 */ "Close",
- /* 44 */ "SeekLt",
- /* 45 */ "SeekLe",
- /* 46 */ "SeekGe",
- /* 47 */ "SeekGt",
- /* 48 */ "Seek",
- /* 49 */ "NotFound",
- /* 50 */ "Found",
- /* 51 */ "IsUnique",
- /* 52 */ "NotExists",
- /* 53 */ "Sequence",
- /* 54 */ "NewRowid",
- /* 55 */ "Insert",
- /* 56 */ "InsertInt",
- /* 57 */ "Delete",
- /* 58 */ "ResetCount",
- /* 59 */ "RowKey",
- /* 60 */ "RowData",
- /* 61 */ "Rowid",
- /* 62 */ "NullRow",
- /* 63 */ "Last",
- /* 64 */ "Sort",
- /* 65 */ "Rewind",
- /* 66 */ "Prev",
- /* 67 */ "Next",
+ /* 26 */ "Once",
+ /* 27 */ "If",
+ /* 28 */ "IfNot",
+ /* 29 */ "Column",
+ /* 30 */ "Affinity",
+ /* 31 */ "MakeRecord",
+ /* 32 */ "Count",
+ /* 33 */ "Savepoint",
+ /* 34 */ "AutoCommit",
+ /* 35 */ "Transaction",
+ /* 36 */ "ReadCookie",
+ /* 37 */ "SetCookie",
+ /* 38 */ "VerifyCookie",
+ /* 39 */ "OpenRead",
+ /* 40 */ "OpenWrite",
+ /* 41 */ "OpenAutoindex",
+ /* 42 */ "OpenEphemeral",
+ /* 43 */ "SorterOpen",
+ /* 44 */ "OpenPseudo",
+ /* 45 */ "Close",
+ /* 46 */ "SeekLt",
+ /* 47 */ "SeekLe",
+ /* 48 */ "SeekGe",
+ /* 49 */ "SeekGt",
+ /* 50 */ "Seek",
+ /* 51 */ "NotFound",
+ /* 52 */ "Found",
+ /* 53 */ "IsUnique",
+ /* 54 */ "NotExists",
+ /* 55 */ "Sequence",
+ /* 56 */ "NewRowid",
+ /* 57 */ "Insert",
+ /* 58 */ "InsertInt",
+ /* 59 */ "Delete",
+ /* 60 */ "ResetCount",
+ /* 61 */ "SorterCompare",
+ /* 62 */ "SorterData",
+ /* 63 */ "RowKey",
+ /* 64 */ "RowData",
+ /* 65 */ "Rowid",
+ /* 66 */ "NullRow",
+ /* 67 */ "Last",
/* 68 */ "Or",
/* 69 */ "And",
- /* 70 */ "IdxInsert",
- /* 71 */ "IdxDelete",
- /* 72 */ "IdxRowid",
+ /* 70 */ "SorterSort",
+ /* 71 */ "Sort",
+ /* 72 */ "Rewind",
/* 73 */ "IsNull",
/* 74 */ "NotNull",
/* 75 */ "Ne",
@@ -21385,7 +22522,7 @@
/* 78 */ "Le",
/* 79 */ "Lt",
/* 80 */ "Ge",
- /* 81 */ "IdxLT",
+ /* 81 */ "SorterNext",
/* 82 */ "BitAnd",
/* 83 */ "BitOr",
/* 84 */ "ShiftLeft",
@@ -21396,60 +22533,65 @@
/* 89 */ "Divide",
/* 90 */ "Remainder",
/* 91 */ "Concat",
- /* 92 */ "IdxGE",
+ /* 92 */ "Prev",
/* 93 */ "BitNot",
/* 94 */ "String8",
- /* 95 */ "Destroy",
- /* 96 */ "Clear",
- /* 97 */ "CreateIndex",
- /* 98 */ "CreateTable",
- /* 99 */ "ParseSchema",
- /* 100 */ "LoadAnalysis",
- /* 101 */ "DropTable",
- /* 102 */ "DropIndex",
- /* 103 */ "DropTrigger",
- /* 104 */ "IntegrityCk",
- /* 105 */ "RowSetAdd",
- /* 106 */ "RowSetRead",
- /* 107 */ "RowSetTest",
- /* 108 */ "Program",
- /* 109 */ "Param",
- /* 110 */ "FkCounter",
- /* 111 */ "FkIfZero",
- /* 112 */ "MemMax",
- /* 113 */ "IfPos",
- /* 114 */ "IfNeg",
- /* 115 */ "IfZero",
- /* 116 */ "AggStep",
- /* 117 */ "AggFinal",
- /* 118 */ "Checkpoint",
- /* 119 */ "JournalMode",
- /* 120 */ "Vacuum",
- /* 121 */ "IncrVacuum",
- /* 122 */ "Expire",
- /* 123 */ "TableLock",
- /* 124 */ "VBegin",
- /* 125 */ "VCreate",
- /* 126 */ "VDestroy",
- /* 127 */ "VOpen",
- /* 128 */ "VFilter",
- /* 129 */ "VColumn",
+ /* 95 */ "Next",
+ /* 96 */ "SorterInsert",
+ /* 97 */ "IdxInsert",
+ /* 98 */ "IdxDelete",
+ /* 99 */ "IdxRowid",
+ /* 100 */ "IdxLT",
+ /* 101 */ "IdxGE",
+ /* 102 */ "Destroy",
+ /* 103 */ "Clear",
+ /* 104 */ "CreateIndex",
+ /* 105 */ "CreateTable",
+ /* 106 */ "ParseSchema",
+ /* 107 */ "LoadAnalysis",
+ /* 108 */ "DropTable",
+ /* 109 */ "DropIndex",
+ /* 110 */ "DropTrigger",
+ /* 111 */ "IntegrityCk",
+ /* 112 */ "RowSetAdd",
+ /* 113 */ "RowSetRead",
+ /* 114 */ "RowSetTest",
+ /* 115 */ "Program",
+ /* 116 */ "Param",
+ /* 117 */ "FkCounter",
+ /* 118 */ "FkIfZero",
+ /* 119 */ "MemMax",
+ /* 120 */ "IfPos",
+ /* 121 */ "IfNeg",
+ /* 122 */ "IfZero",
+ /* 123 */ "AggStep",
+ /* 124 */ "AggFinal",
+ /* 125 */ "Checkpoint",
+ /* 126 */ "JournalMode",
+ /* 127 */ "Vacuum",
+ /* 128 */ "IncrVacuum",
+ /* 129 */ "Expire",
/* 130 */ "Real",
- /* 131 */ "VNext",
- /* 132 */ "VRename",
- /* 133 */ "VUpdate",
- /* 134 */ "Pagecount",
- /* 135 */ "MaxPgcnt",
- /* 136 */ "Trace",
- /* 137 */ "Noop",
- /* 138 */ "Explain",
- /* 139 */ "NotUsed_139",
- /* 140 */ "NotUsed_140",
+ /* 131 */ "TableLock",
+ /* 132 */ "VBegin",
+ /* 133 */ "VCreate",
+ /* 134 */ "VDestroy",
+ /* 135 */ "VOpen",
+ /* 136 */ "VFilter",
+ /* 137 */ "VColumn",
+ /* 138 */ "VNext",
+ /* 139 */ "VRename",
+ /* 140 */ "VUpdate",
/* 141 */ "ToText",
/* 142 */ "ToBlob",
/* 143 */ "ToNumeric",
/* 144 */ "ToInt",
/* 145 */ "ToReal",
+ /* 146 */ "Pagecount",
+ /* 147 */ "MaxPgcnt",
+ /* 148 */ "Trace",
+ /* 149 */ "Noop",
+ /* 150 */ "Explain",
};
return azName[i];
}
@@ -21544,11 +22686,14 @@
# error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead."
#endif
-#ifdef SQLITE_DEBUG
-SQLITE_PRIVATE int sqlite3OSTrace = 0;
-#define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X
+#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG)
+# ifndef SQLITE_DEBUG_OS_TRACE
+# define SQLITE_DEBUG_OS_TRACE 0
+# endif
+ int sqlite3OSTrace = SQLITE_DEBUG_OS_TRACE;
+# define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X
#else
-#define OSTRACE(X)
+# define OSTRACE(X)
#endif
/*
@@ -21718,20 +22863,35 @@
/************** End of os_common.h *******************************************/
/************** Continuing where we left off in os_os2.c *********************/
+/* Forward references */
+typedef struct os2File os2File; /* The file structure */
+typedef struct os2ShmNode os2ShmNode; /* A shared descritive memory node */
+typedef struct os2ShmLink os2ShmLink; /* A connection to shared-memory */
+
/*
** The os2File structure is subclass of sqlite3_file specific for the OS/2
** protability layer.
*/
-typedef struct os2File os2File;
struct os2File {
const sqlite3_io_methods *pMethod; /* Always the first entry */
HFILE h; /* Handle for accessing the file */
- char* pathToDel; /* Name of file to delete on close, NULL if not */
- unsigned char locktype; /* Type of lock currently held on this file */
+ int flags; /* Flags provided to os2Open() */
+ int locktype; /* Type of lock currently held on this file */
+ int szChunk; /* Chunk size configured by FCNTL_CHUNK_SIZE */
+ char *zFullPathCp; /* Full path name of this file */
+ os2ShmLink *pShmLink; /* Instance of shared memory on this file */
};
#define LOCK_TIMEOUT 10L /* the default locking timeout */
+/*
+** Missing from some versions of the OS/2 toolkit -
+** used to allocate from high memory if possible
+*/
+#ifndef OBJ_ANY
+# define OBJ_ANY 0x00000400
+#endif
+
/*****************************************************************************
** The next group of routines implement the I/O methods specified
** by the sqlite3_io_methods object.
@@ -21741,21 +22901,24 @@
** Close a file.
*/
static int os2Close( sqlite3_file *id ){
- APIRET rc = NO_ERROR;
- os2File *pFile;
- if( id && (pFile = (os2File*)id) != 0 ){
- OSTRACE(( "CLOSE %d\n", pFile->h ));
- rc = DosClose( pFile->h );
- pFile->locktype = NO_LOCK;
- if( pFile->pathToDel != NULL ){
- rc = DosForceDelete( (PSZ)pFile->pathToDel );
- free( pFile->pathToDel );
- pFile->pathToDel = NULL;
- }
- id = 0;
- OpenCounter( -1 );
- }
+ APIRET rc;
+ os2File *pFile = (os2File*)id;
+ assert( id!=0 );
+ OSTRACE(( "CLOSE %d (%s)\n", pFile->h, pFile->zFullPathCp ));
+
+ rc = DosClose( pFile->h );
+
+ if( pFile->flags & SQLITE_OPEN_DELETEONCLOSE )
+ DosForceDelete( (PSZ)pFile->zFullPathCp );
+
+ free( pFile->zFullPathCp );
+ pFile->zFullPathCp = NULL;
+ pFile->locktype = NO_LOCK;
+ pFile->h = (HFILE)-1;
+ pFile->flags = 0;
+
+ OpenCounter( -1 );
return rc == NO_ERROR ? SQLITE_OK : SQLITE_IOERR;
}
@@ -21828,10 +22991,21 @@
** Truncate an open file to a specified size
*/
static int os2Truncate( sqlite3_file *id, i64 nByte ){
- APIRET rc = NO_ERROR;
+ APIRET rc;
os2File *pFile = (os2File*)id;
+ assert( id!=0 );
OSTRACE(( "TRUNCATE %d %lld\n", pFile->h, nByte ));
SimulateIOError( return SQLITE_IOERR_TRUNCATE );
+
+ /* If the user has configured a chunk-size for this file, truncate the
+ ** file so that it consists of an integer number of chunks (i.e. the
+ ** actual file size after the operation may be larger than the requested
+ ** size).
+ */
+ if( pFile->szChunk ){
+ nByte = ((nByte + pFile->szChunk - 1)/pFile->szChunk) * pFile->szChunk;
+ }
+
rc = DosSetFileSize( pFile->h, nByte );
return rc == NO_ERROR ? SQLITE_OK : SQLITE_IOERR_TRUNCATE;
}
@@ -22195,8 +23369,22 @@
((os2File*)id)->h, ((os2File*)id)->locktype ));
return SQLITE_OK;
}
+ case SQLITE_FCNTL_CHUNK_SIZE: {
+ ((os2File*)id)->szChunk = *(int*)pArg;
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_SIZE_HINT: {
+ sqlite3_int64 sz = *(sqlite3_int64*)pArg;
+ SimulateIOErrorBenign(1);
+ os2Truncate(id, sz);
+ SimulateIOErrorBenign(0);
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_SYNC_OMITTED: {
+ return SQLITE_OK;
+ }
}
- return SQLITE_ERROR;
+ return SQLITE_NOTFOUND;
}
/*
@@ -22210,6 +23398,7 @@
** same for both.
*/
static int os2SectorSize(sqlite3_file *id){
+ UNUSED_PARAMETER(id);
return SQLITE_DEFAULT_SECTOR_SIZE;
}
@@ -22217,7 +23406,8 @@
** Return a vector of device characteristics.
*/
static int os2DeviceCharacteristics(sqlite3_file *id){
- return 0;
+ UNUSED_PARAMETER(id);
+ return SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN;
}
@@ -22304,26 +23494,682 @@
return out;
}
+
+#ifndef SQLITE_OMIT_WAL
+
+/*
+** Use main database file for interprocess locking. If un-defined
+** a separate file is created for this purpose. The file will be
+** used only to set file locks. There will be no data written to it.
+*/
+#define SQLITE_OS2_NO_WAL_LOCK_FILE
+
+#if 0
+static void _ERR_TRACE( const char *fmt, ... ) {
+ va_list ap;
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
+ fflush(stderr);
+}
+#define ERR_TRACE(rc, msg) \
+ if( (rc) != SQLITE_OK ) _ERR_TRACE msg;
+#else
+#define ERR_TRACE(rc, msg)
+#endif
+
+/*
+** Helper functions to obtain and relinquish the global mutex. The
+** global mutex is used to protect os2ShmNodeList.
+**
+** Function os2ShmMutexHeld() is used to assert() that the global mutex
+** is held when required. This function is only used as part of assert()
+** statements. e.g.
+**
+** os2ShmEnterMutex()
+** assert( os2ShmMutexHeld() );
+** os2ShmLeaveMutex()
+*/
+static void os2ShmEnterMutex(void){
+ sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+}
+static void os2ShmLeaveMutex(void){
+ sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+}
+#ifdef SQLITE_DEBUG
+static int os2ShmMutexHeld(void) {
+ return sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+}
+int GetCurrentProcessId(void) {
+ PPIB pib;
+ DosGetInfoBlocks(NULL, &pib);
+ return (int)pib->pib_ulpid;
+}
+#endif
+
+/*
+** Object used to represent a the shared memory area for a single log file.
+** When multiple threads all reference the same log-summary, each thread has
+** its own os2File object, but they all point to a single instance of this
+** object. In other words, each log-summary is opened only once per process.
+**
+** os2ShmMutexHeld() must be true when creating or destroying
+** this object or while reading or writing the following fields:
+**
+** nRef
+** pNext
+**
+** The following fields are read-only after the object is created:
+**
+** szRegion
+** hLockFile
+** shmBaseName
+**
+** Either os2ShmNode.mutex must be held or os2ShmNode.nRef==0 and
+** os2ShmMutexHeld() is true when reading or writing any other field
+** in this structure.
+**
+*/
+struct os2ShmNode {
+ sqlite3_mutex *mutex; /* Mutex to access this object */
+ os2ShmNode *pNext; /* Next in list of all os2ShmNode objects */
+
+ int szRegion; /* Size of shared-memory regions */
+
+ int nRegion; /* Size of array apRegion */
+ void **apRegion; /* Array of pointers to shared-memory regions */
+
+ int nRef; /* Number of os2ShmLink objects pointing to this */
+ os2ShmLink *pFirst; /* First os2ShmLink object pointing to this */
+
+ HFILE hLockFile; /* File used for inter-process memory locking */
+ char shmBaseName[1]; /* Name of the memory object !!! must last !!! */
+};
+
+
+/*
+** Structure used internally by this VFS to record the state of an
+** open shared memory connection.
+**
+** The following fields are initialized when this object is created and
+** are read-only thereafter:
+**
+** os2Shm.pShmNode
+** os2Shm.id
+**
+** All other fields are read/write. The os2Shm.pShmNode->mutex must be held
+** while accessing any read/write fields.
+*/
+struct os2ShmLink {
+ os2ShmNode *pShmNode; /* The underlying os2ShmNode object */
+ os2ShmLink *pNext; /* Next os2Shm with the same os2ShmNode */
+ u32 sharedMask; /* Mask of shared locks held */
+ u32 exclMask; /* Mask of exclusive locks held */
+#ifdef SQLITE_DEBUG
+ u8 id; /* Id of this connection with its os2ShmNode */
+#endif
+};
+
+
+/*
+** A global list of all os2ShmNode objects.
+**
+** The os2ShmMutexHeld() must be true while reading or writing this list.
+*/
+static os2ShmNode *os2ShmNodeList = NULL;
+
+/*
+** Constants used for locking
+*/
+#ifdef SQLITE_OS2_NO_WAL_LOCK_FILE
+#define OS2_SHM_BASE (PENDING_BYTE + 0x10000) /* first lock byte */
+#else
+#define OS2_SHM_BASE ((22+SQLITE_SHM_NLOCK)*4) /* first lock byte */
+#endif
+
+#define OS2_SHM_DMS (OS2_SHM_BASE+SQLITE_SHM_NLOCK) /* deadman switch */
+
+/*
+** Apply advisory locks for all n bytes beginning at ofst.
+*/
+#define _SHM_UNLCK 1 /* no lock */
+#define _SHM_RDLCK 2 /* shared lock, no wait */
+#define _SHM_WRLCK 3 /* exlusive lock, no wait */
+#define _SHM_WRLCK_WAIT 4 /* exclusive lock, wait */
+static int os2ShmSystemLock(
+ os2ShmNode *pNode, /* Apply locks to this open shared-memory segment */
+ int lockType, /* _SHM_UNLCK, _SHM_RDLCK, _SHM_WRLCK or _SHM_WRLCK_WAIT */
+ int ofst, /* Offset to first byte to be locked/unlocked */
+ int nByte /* Number of bytes to lock or unlock */
+){
+ APIRET rc;
+ FILELOCK area;
+ ULONG mode, timeout;
+
+ /* Access to the os2ShmNode object is serialized by the caller */
+ assert( sqlite3_mutex_held(pNode->mutex) || pNode->nRef==0 );
+
+ mode = 1; /* shared lock */
+ timeout = 0; /* no wait */
+ area.lOffset = ofst;
+ area.lRange = nByte;
+
+ switch( lockType ) {
+ case _SHM_WRLCK_WAIT:
+ timeout = (ULONG)-1; /* wait forever */
+ case _SHM_WRLCK:
+ mode = 0; /* exclusive lock */
+ case _SHM_RDLCK:
+ rc = DosSetFileLocks(pNode->hLockFile,
+ NULL, &area, timeout, mode);
+ break;
+ /* case _SHM_UNLCK: */
+ default:
+ rc = DosSetFileLocks(pNode->hLockFile,
+ &area, NULL, 0, 0);
+ break;
+ }
+
+ OSTRACE(("SHM-LOCK %d %s %s 0x%08lx\n",
+ pNode->hLockFile,
+ rc==SQLITE_OK ? "ok" : "failed",
+ lockType==_SHM_UNLCK ? "Unlock" : "Lock",
+ rc));
+
+ ERR_TRACE(rc, ("os2ShmSystemLock: %d %s\n", rc, pNode->shmBaseName))
+
+ return ( rc == 0 ) ? SQLITE_OK : SQLITE_BUSY;
+}
+
+/*
+** Find an os2ShmNode in global list or allocate a new one, if not found.
+**
+** This is not a VFS shared-memory method; it is a utility function called
+** by VFS shared-memory methods.
+*/
+static int os2OpenSharedMemory( os2File *fd, int szRegion ) {
+ os2ShmLink *pLink;
+ os2ShmNode *pNode;
+ int cbShmName, rc = SQLITE_OK;
+ char shmName[CCHMAXPATH + 30];
+#ifndef SQLITE_OS2_NO_WAL_LOCK_FILE
+ ULONG action;
+#endif
+
+ /* We need some additional space at the end to append the region number */
+ cbShmName = sprintf(shmName, "\\SHAREMEM\\%s", fd->zFullPathCp );
+ if( cbShmName >= CCHMAXPATH-8 )
+ return SQLITE_IOERR_SHMOPEN;
+
+ /* Replace colon in file name to form a valid shared memory name */
+ shmName[10+1] = '!';
+
+ /* Allocate link object (we free it later in case of failure) */
+ pLink = sqlite3_malloc( sizeof(*pLink) );
+ if( !pLink )
+ return SQLITE_NOMEM;
+
+ /* Access node list */
+ os2ShmEnterMutex();
+
+ /* Find node by it's shared memory base name */
+ for( pNode = os2ShmNodeList;
+ pNode && stricmp(shmName, pNode->shmBaseName) != 0;
+ pNode = pNode->pNext ) ;
+
+ /* Not found: allocate a new node */
+ if( !pNode ) {
+ pNode = sqlite3_malloc( sizeof(*pNode) + cbShmName );
+ if( pNode ) {
+ memset(pNode, 0, sizeof(*pNode) );
+ pNode->szRegion = szRegion;
+ pNode->hLockFile = (HFILE)-1;
+ strcpy(pNode->shmBaseName, shmName);
+
+#ifdef SQLITE_OS2_NO_WAL_LOCK_FILE
+ if( DosDupHandle(fd->h, &pNode->hLockFile) != 0 ) {
+#else
+ sprintf(shmName, "%s-lck", fd->zFullPathCp);
+ if( DosOpen((PSZ)shmName, &pNode->hLockFile, &action, 0, FILE_NORMAL,
+ OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW,
+ OPEN_ACCESS_READWRITE | OPEN_SHARE_DENYNONE |
+ OPEN_FLAGS_NOINHERIT | OPEN_FLAGS_FAIL_ON_ERROR,
+ NULL) != 0 ) {
+#endif
+ sqlite3_free(pNode);
+ rc = SQLITE_IOERR;
+ } else {
+ pNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST);
+ if( !pNode->mutex ) {
+ sqlite3_free(pNode);
+ rc = SQLITE_NOMEM;
+ }
+ }
+ } else {
+ rc = SQLITE_NOMEM;
+ }
+
+ if( rc == SQLITE_OK ) {
+ pNode->pNext = os2ShmNodeList;
+ os2ShmNodeList = pNode;
+ } else {
+ pNode = NULL;
+ }
+ } else if( pNode->szRegion != szRegion ) {
+ rc = SQLITE_IOERR_SHMSIZE;
+ pNode = NULL;
+ }
+
+ if( pNode ) {
+ sqlite3_mutex_enter(pNode->mutex);
+
+ memset(pLink, 0, sizeof(*pLink));
+
+ pLink->pShmNode = pNode;
+ pLink->pNext = pNode->pFirst;
+ pNode->pFirst = pLink;
+ pNode->nRef++;
+
+ fd->pShmLink = pLink;
+
+ sqlite3_mutex_leave(pNode->mutex);
+
+ } else {
+ /* Error occured. Free our link object. */
+ sqlite3_free(pLink);
+ }
+
+ os2ShmLeaveMutex();
+
+ ERR_TRACE(rc, ("os2OpenSharedMemory: %d %s\n", rc, fd->zFullPathCp))
+
+ return rc;
+}
+
+/*
+** Purge the os2ShmNodeList list of all entries with nRef==0.
+**
+** This is not a VFS shared-memory method; it is a utility function called
+** by VFS shared-memory methods.
+*/
+static void os2PurgeShmNodes( int deleteFlag ) {
+ os2ShmNode *pNode;
+ os2ShmNode **ppNode;
+
+ os2ShmEnterMutex();
+
+ ppNode = &os2ShmNodeList;
+
+ while( *ppNode ) {
+ pNode = *ppNode;
+
+ if( pNode->nRef == 0 ) {
+ *ppNode = pNode->pNext;
+
+ if( pNode->apRegion ) {
+ /* Prevent other processes from resizing the shared memory */
+ os2ShmSystemLock(pNode, _SHM_WRLCK_WAIT, OS2_SHM_DMS, 1);
+
+ while( pNode->nRegion-- ) {
+#ifdef SQLITE_DEBUG
+ int rc =
+#endif
+ DosFreeMem(pNode->apRegion[pNode->nRegion]);
+
+ OSTRACE(("SHM-PURGE pid-%d unmap region=%d %s\n",
+ (int)GetCurrentProcessId(), pNode->nRegion,
+ rc == 0 ? "ok" : "failed"));
+ }
+
+ /* Allow other processes to resize the shared memory */
+ os2ShmSystemLock(pNode, _SHM_UNLCK, OS2_SHM_DMS, 1);
+
+ sqlite3_free(pNode->apRegion);
+ }
+
+ DosClose(pNode->hLockFile);
+
+#ifndef SQLITE_OS2_NO_WAL_LOCK_FILE
+ if( deleteFlag ) {
+ char fileName[CCHMAXPATH];
+ /* Skip "\\SHAREMEM\\" */
+ sprintf(fileName, "%s-lck", pNode->shmBaseName + 10);
+ /* restore colon */
+ fileName[1] = ':';
+
+ DosForceDelete(fileName);
+ }
+#endif
+
+ sqlite3_mutex_free(pNode->mutex);
+
+ sqlite3_free(pNode);
+
+ } else {
+ ppNode = &pNode->pNext;
+ }
+ }
+
+ os2ShmLeaveMutex();
+}
+
+/*
+** This function is called to obtain a pointer to region iRegion of the
+** shared-memory associated with the database file id. Shared-memory regions
+** are numbered starting from zero. Each shared-memory region is szRegion
+** bytes in size.
+**
+** If an error occurs, an error code is returned and *pp is set to NULL.
+**
+** Otherwise, if the bExtend parameter is 0 and the requested shared-memory
+** region has not been allocated (by any client, including one running in a
+** separate process), then *pp is set to NULL and SQLITE_OK returned. If
+** bExtend is non-zero and the requested shared-memory region has not yet
+** been allocated, it is allocated by this function.
+**
+** If the shared-memory region has already been allocated or is allocated by
+** this call as described above, then it is mapped into this processes
+** address space (if it is not already), *pp is set to point to the mapped
+** memory and SQLITE_OK returned.
+*/
+static int os2ShmMap(
+ sqlite3_file *id, /* Handle open on database file */
+ int iRegion, /* Region to retrieve */
+ int szRegion, /* Size of regions */
+ int bExtend, /* True to extend block if necessary */
+ void volatile **pp /* OUT: Mapped memory */
+){
+ PVOID pvTemp;
+ void **apRegion;
+ os2ShmNode *pNode;
+ int n, rc = SQLITE_OK;
+ char shmName[CCHMAXPATH];
+ os2File *pFile = (os2File*)id;
+
+ *pp = NULL;
+
+ if( !pFile->pShmLink )
+ rc = os2OpenSharedMemory( pFile, szRegion );
+
+ if( rc == SQLITE_OK ) {
+ pNode = pFile->pShmLink->pShmNode ;
+
+ sqlite3_mutex_enter(pNode->mutex);
+
+ assert( szRegion==pNode->szRegion );
+
+ /* Unmapped region ? */
+ if( iRegion >= pNode->nRegion ) {
+ /* Prevent other processes from resizing the shared memory */
+ os2ShmSystemLock(pNode, _SHM_WRLCK_WAIT, OS2_SHM_DMS, 1);
+
+ apRegion = sqlite3_realloc(
+ pNode->apRegion, (iRegion + 1) * sizeof(apRegion[0]));
+
+ if( apRegion ) {
+ pNode->apRegion = apRegion;
+
+ while( pNode->nRegion <= iRegion ) {
+ sprintf(shmName, "%s-%u",
+ pNode->shmBaseName, pNode->nRegion);
+
+ if( DosGetNamedSharedMem(&pvTemp, (PSZ)shmName,
+ PAG_READ | PAG_WRITE) != NO_ERROR ) {
+ if( !bExtend )
+ break;
+
+ if( DosAllocSharedMem(&pvTemp, (PSZ)shmName, szRegion,
+ PAG_READ | PAG_WRITE | PAG_COMMIT | OBJ_ANY) != NO_ERROR &&
+ DosAllocSharedMem(&pvTemp, (PSZ)shmName, szRegion,
+ PAG_READ | PAG_WRITE | PAG_COMMIT) != NO_ERROR ) {
+ rc = SQLITE_NOMEM;
+ break;
+ }
+ }
+
+ apRegion[pNode->nRegion++] = pvTemp;
+ }
+
+ /* zero out remaining entries */
+ for( n = pNode->nRegion; n <= iRegion; n++ )
+ pNode->apRegion[n] = NULL;
+
+ /* Return this region (maybe zero) */
+ *pp = pNode->apRegion[iRegion];
+ } else {
+ rc = SQLITE_NOMEM;
+ }
+
+ /* Allow other processes to resize the shared memory */
+ os2ShmSystemLock(pNode, _SHM_UNLCK, OS2_SHM_DMS, 1);
+
+ } else {
+ /* Region has been mapped previously */
+ *pp = pNode->apRegion[iRegion];
+ }
+
+ sqlite3_mutex_leave(pNode->mutex);
+ }
+
+ ERR_TRACE(rc, ("os2ShmMap: %s iRgn = %d, szRgn = %d, bExt = %d : %d\n",
+ pFile->zFullPathCp, iRegion, szRegion, bExtend, rc))
+
+ return rc;
+}
+
+/*
+** Close a connection to shared-memory. Delete the underlying
+** storage if deleteFlag is true.
+**
+** If there is no shared memory associated with the connection then this
+** routine is a harmless no-op.
+*/
+static int os2ShmUnmap(
+ sqlite3_file *id, /* The underlying database file */
+ int deleteFlag /* Delete shared-memory if true */
+){
+ os2File *pFile = (os2File*)id;
+ os2ShmLink *pLink = pFile->pShmLink;
+
+ if( pLink ) {
+ int nRef = -1;
+ os2ShmLink **ppLink;
+ os2ShmNode *pNode = pLink->pShmNode;
+
+ sqlite3_mutex_enter(pNode->mutex);
+
+ for( ppLink = &pNode->pFirst;
+ *ppLink && *ppLink != pLink;
+ ppLink = &(*ppLink)->pNext ) ;
+
+ assert(*ppLink);
+
+ if( *ppLink ) {
+ *ppLink = pLink->pNext;
+ nRef = --pNode->nRef;
+ } else {
+ ERR_TRACE(1, ("os2ShmUnmap: link not found ! %s\n",
+ pNode->shmBaseName))
+ }
+
+ pFile->pShmLink = NULL;
+ sqlite3_free(pLink);
+
+ sqlite3_mutex_leave(pNode->mutex);
+
+ if( nRef == 0 )
+ os2PurgeShmNodes( deleteFlag );
+ }
+
+ return SQLITE_OK;
+}
+
+/*
+** Change the lock state for a shared-memory segment.
+**
+** Note that the relationship between SHAREd and EXCLUSIVE locks is a little
+** different here than in posix. In xShmLock(), one can go from unlocked
+** to shared and back or from unlocked to exclusive and back. But one may
+** not go from shared to exclusive or from exclusive to shared.
+*/
+static int os2ShmLock(
+ sqlite3_file *id, /* Database file holding the shared memory */
+ int ofst, /* First lock to acquire or release */
+ int n, /* Number of locks to acquire or release */
+ int flags /* What to do with the lock */
+){
+ u32 mask; /* Mask of locks to take or release */
+ int rc = SQLITE_OK; /* Result code */
+ os2File *pFile = (os2File*)id;
+ os2ShmLink *p = pFile->pShmLink; /* The shared memory being locked */
+ os2ShmLink *pX; /* For looping over all siblings */
+ os2ShmNode *pShmNode = p->pShmNode; /* Our node */
+
+ assert( ofst>=0 && ofst+n<=SQLITE_SHM_NLOCK );
+ assert( n>=1 );
+ assert( flags==(SQLITE_SHM_LOCK | SQLITE_SHM_SHARED)
+ || flags==(SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE)
+ || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED)
+ || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE) );
+ assert( n==1 || (flags & SQLITE_SHM_EXCLUSIVE)!=0 );
+
+ mask = (u32)((1U<<(ofst+n)) - (1U<<ofst));
+ assert( n>1 || mask==(1<<ofst) );
+
+
+ sqlite3_mutex_enter(pShmNode->mutex);
+
+ if( flags & SQLITE_SHM_UNLOCK ){
+ u32 allMask = 0; /* Mask of locks held by siblings */
+
+ /* See if any siblings hold this same lock */
+ for(pX=pShmNode->pFirst; pX; pX=pX->pNext){
+ if( pX==p ) continue;
+ assert( (pX->exclMask & (p->exclMask|p->sharedMask))==0 );
+ allMask |= pX->sharedMask;
+ }
+
+ /* Unlock the system-level locks */
+ if( (mask & allMask)==0 ){
+ rc = os2ShmSystemLock(pShmNode, _SHM_UNLCK, ofst+OS2_SHM_BASE, n);
+ }else{
+ rc = SQLITE_OK;
+ }
+
+ /* Undo the local locks */
+ if( rc==SQLITE_OK ){
+ p->exclMask &= ~mask;
+ p->sharedMask &= ~mask;
+ }
+ }else if( flags & SQLITE_SHM_SHARED ){
+ u32 allShared = 0; /* Union of locks held by connections other than "p" */
+
+ /* Find out which shared locks are already held by sibling connections.
+ ** If any sibling already holds an exclusive lock, go ahead and return
+ ** SQLITE_BUSY.
+ */
+ for(pX=pShmNode->pFirst; pX; pX=pX->pNext){
+ if( (pX->exclMask & mask)!=0 ){
+ rc = SQLITE_BUSY;
+ break;
+ }
+ allShared |= pX->sharedMask;
+ }
+
+ /* Get shared locks at the system level, if necessary */
+ if( rc==SQLITE_OK ){
+ if( (allShared & mask)==0 ){
+ rc = os2ShmSystemLock(pShmNode, _SHM_RDLCK, ofst+OS2_SHM_BASE, n);
+ }else{
+ rc = SQLITE_OK;
+ }
+ }
+
+ /* Get the local shared locks */
+ if( rc==SQLITE_OK ){
+ p->sharedMask |= mask;
+ }
+ }else{
+ /* Make sure no sibling connections hold locks that will block this
+ ** lock. If any do, return SQLITE_BUSY right away.
+ */
+ for(pX=pShmNode->pFirst; pX; pX=pX->pNext){
+ if( (pX->exclMask & mask)!=0 || (pX->sharedMask & mask)!=0 ){
+ rc = SQLITE_BUSY;
+ break;
+ }
+ }
+
+ /* Get the exclusive locks at the system level. Then if successful
+ ** also mark the local connection as being locked.
+ */
+ if( rc==SQLITE_OK ){
+ rc = os2ShmSystemLock(pShmNode, _SHM_WRLCK, ofst+OS2_SHM_BASE, n);
+ if( rc==SQLITE_OK ){
+ assert( (p->sharedMask & mask)==0 );
+ p->exclMask |= mask;
+ }
+ }
+ }
+
+ sqlite3_mutex_leave(pShmNode->mutex);
+
+ OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x %s\n",
+ p->id, (int)GetCurrentProcessId(), p->sharedMask, p->exclMask,
+ rc ? "failed" : "ok"));
+
+ ERR_TRACE(rc, ("os2ShmLock: ofst = %d, n = %d, flags = 0x%x -> %d \n",
+ ofst, n, flags, rc))
+
+ return rc;
+}
+
+/*
+** Implement a memory barrier or memory fence on shared memory.
+**
+** All loads and stores begun before the barrier must complete before
+** any load or store begun after the barrier.
+*/
+static void os2ShmBarrier(
+ sqlite3_file *id /* Database file holding the shared memory */
+){
+ UNUSED_PARAMETER(id);
+ os2ShmEnterMutex();
+ os2ShmLeaveMutex();
+}
+
+#else
+# define os2ShmMap 0
+# define os2ShmLock 0
+# define os2ShmBarrier 0
+# define os2ShmUnmap 0
+#endif /* #ifndef SQLITE_OMIT_WAL */
+
+
/*
** This vector defines all the methods that can operate on an
** sqlite3_file for os2.
*/
static const sqlite3_io_methods os2IoMethod = {
- 1, /* iVersion */
- os2Close,
- os2Read,
- os2Write,
- os2Truncate,
- os2Sync,
- os2FileSize,
- os2Lock,
- os2Unlock,
- os2CheckReservedLock,
- os2FileControl,
- os2SectorSize,
- os2DeviceCharacteristics
+ 2, /* iVersion */
+ os2Close, /* xClose */
+ os2Read, /* xRead */
+ os2Write, /* xWrite */
+ os2Truncate, /* xTruncate */
+ os2Sync, /* xSync */
+ os2FileSize, /* xFileSize */
+ os2Lock, /* xLock */
+ os2Unlock, /* xUnlock */
+ os2CheckReservedLock, /* xCheckReservedLock */
+ os2FileControl, /* xFileControl */
+ os2SectorSize, /* xSectorSize */
+ os2DeviceCharacteristics, /* xDeviceCharacteristics */
+ os2ShmMap, /* xShmMap */
+ os2ShmLock, /* xShmLock */
+ os2ShmBarrier, /* xShmBarrier */
+ os2ShmUnmap /* xShmUnmap */
};
+
/***************************************************************************
** Here ends the I/O methods that form the sqlite3_io_methods object.
**
@@ -22335,50 +24181,57 @@
** hold at pVfs->mxPathname characters.
*/
static int getTempname(int nBuf, char *zBuf ){
- static const unsigned char zChars[] =
+ static const char zChars[] =
"abcdefghijklmnopqrstuvwxyz"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"0123456789";
int i, j;
- char zTempPathBuf[3];
- PSZ zTempPath = (PSZ)&zTempPathBuf;
- if( sqlite3_temp_directory ){
- zTempPath = sqlite3_temp_directory;
- }else{
- if( DosScanEnv( (PSZ)"TEMP", &zTempPath ) ){
- if( DosScanEnv( (PSZ)"TMP", &zTempPath ) ){
- if( DosScanEnv( (PSZ)"TMPDIR", &zTempPath ) ){
- ULONG ulDriveNum = 0, ulDriveMap = 0;
- DosQueryCurrentDisk( &ulDriveNum, &ulDriveMap );
- sprintf( (char*)zTempPath, "%c:", (char)( 'A' + ulDriveNum - 1 ) );
- }
- }
- }
+ PSZ zTempPathCp;
+ char zTempPath[CCHMAXPATH];
+ ULONG ulDriveNum, ulDriveMap;
+
+ /* It's odd to simulate an io-error here, but really this is just
+ ** using the io-error infrastructure to test that SQLite handles this
+ ** function failing.
+ */
+ SimulateIOError( return SQLITE_IOERR );
+
+ if( sqlite3_temp_directory ) {
+ sqlite3_snprintf(CCHMAXPATH-30, zTempPath, "%s", sqlite3_temp_directory);
+ } else if( DosScanEnv( (PSZ)"TEMP", &zTempPathCp ) == NO_ERROR ||
+ DosScanEnv( (PSZ)"TMP", &zTempPathCp ) == NO_ERROR ||
+ DosScanEnv( (PSZ)"TMPDIR", &zTempPathCp ) == NO_ERROR ) {
+ char *zTempPathUTF = convertCpPathToUtf8( (char *)zTempPathCp );
+ sqlite3_snprintf(CCHMAXPATH-30, zTempPath, "%s", zTempPathUTF);
+ free( zTempPathUTF );
+ } else if( DosQueryCurrentDisk( &ulDriveNum, &ulDriveMap ) == NO_ERROR ) {
+ zTempPath[0] = (char)('A' + ulDriveNum - 1);
+ zTempPath[1] = ':';
+ zTempPath[2] = '\0';
+ } else {
+ zTempPath[0] = '\0';
}
+
/* Strip off a trailing slashes or backslashes, otherwise we would get *
* multiple (back)slashes which causes DosOpen() to fail. *
* Trailing spaces are not allowed, either. */
j = sqlite3Strlen30(zTempPath);
- while( j > 0 && ( zTempPath[j-1] == '\\' || zTempPath[j-1] == '/'
- || zTempPath[j-1] == ' ' ) ){
+ while( j > 0 && ( zTempPath[j-1] == '\\' || zTempPath[j-1] == '/' ||
+ zTempPath[j-1] == ' ' ) ){
j--;
}
zTempPath[j] = '\0';
- if( !sqlite3_temp_directory ){
- char *zTempPathUTF = convertCpPathToUtf8( zTempPath );
- sqlite3_snprintf( nBuf-30, zBuf,
- "%s\\"SQLITE_TEMP_FILE_PREFIX, zTempPathUTF );
- free( zTempPathUTF );
- }else{
- sqlite3_snprintf( nBuf-30, zBuf,
- "%s\\"SQLITE_TEMP_FILE_PREFIX, zTempPath );
- }
- j = sqlite3Strlen30( zBuf );
+
+ /* We use 20 bytes to randomize the name */
+ sqlite3_snprintf(nBuf-22, zBuf,
+ "%s\\"SQLITE_TEMP_FILE_PREFIX, zTempPath);
+ j = sqlite3Strlen30(zBuf);
sqlite3_randomness( 20, &zBuf[j] );
for( i = 0; i < 20; i++, j++ ){
- zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
+ zBuf[j] = zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
}
zBuf[j] = 0;
+
OSTRACE(( "TEMP FILENAME: %s\n", zBuf ));
return SQLITE_OK;
}
@@ -22398,8 +24251,8 @@
char *zRelativeCp = convertUtf8PathToCp( zRelative );
char zFullCp[CCHMAXPATH] = "\0";
char *zFullUTF;
- APIRET rc = DosQueryPathInfo( zRelativeCp, FIL_QUERYFULLNAME, zFullCp,
- CCHMAXPATH );
+ APIRET rc = DosQueryPathInfo( (PSZ)zRelativeCp, FIL_QUERYFULLNAME,
+ zFullCp, CCHMAXPATH );
free( zRelativeCp );
zFullUTF = convertCpPathToUtf8( zFullCp );
sqlite3_snprintf( nFull, zFull, zFullUTF );
@@ -22413,100 +24266,127 @@
*/
static int os2Open(
sqlite3_vfs *pVfs, /* Not used */
- const char *zName, /* Name of the file */
+ const char *zName, /* Name of the file (UTF-8) */
sqlite3_file *id, /* Write the SQLite file handle here */
int flags, /* Open mode flags */
int *pOutFlags /* Status return flags */
){
HFILE h;
- ULONG ulFileAttribute = FILE_NORMAL;
ULONG ulOpenFlags = 0;
ULONG ulOpenMode = 0;
+ ULONG ulAction = 0;
+ ULONG rc;
os2File *pFile = (os2File*)id;
- APIRET rc = NO_ERROR;
- ULONG ulAction;
+ const char *zUtf8Name = zName;
char *zNameCp;
- char zTmpname[CCHMAXPATH+1]; /* Buffer to hold name of temp file */
+ char zTmpname[CCHMAXPATH];
+
+ int isExclusive = (flags & SQLITE_OPEN_EXCLUSIVE);
+ int isCreate = (flags & SQLITE_OPEN_CREATE);
+ int isReadWrite = (flags & SQLITE_OPEN_READWRITE);
+#ifndef NDEBUG
+ int isDelete = (flags & SQLITE_OPEN_DELETEONCLOSE);
+ int isReadonly = (flags & SQLITE_OPEN_READONLY);
+ int eType = (flags & 0xFFFFFF00);
+ int isOpenJournal = (isCreate && (
+ eType==SQLITE_OPEN_MASTER_JOURNAL
+ || eType==SQLITE_OPEN_MAIN_JOURNAL
+ || eType==SQLITE_OPEN_WAL
+ ));
+#endif
+
+ UNUSED_PARAMETER(pVfs);
+ assert( id!=0 );
+
+ /* Check the following statements are true:
+ **
+ ** (a) Exactly one of the READWRITE and READONLY flags must be set, and
+ ** (b) if CREATE is set, then READWRITE must also be set, and
+ ** (c) if EXCLUSIVE is set, then CREATE must also be set.
+ ** (d) if DELETEONCLOSE is set, then CREATE must also be set.
+ */
+ assert((isReadonly==0 || isReadWrite==0) && (isReadWrite || isReadonly));
+ assert(isCreate==0 || isReadWrite);
+ assert(isExclusive==0 || isCreate);
+ assert(isDelete==0 || isCreate);
+
+ /* The main DB, main journal, WAL file and master journal are never
+ ** automatically deleted. Nor are they ever temporary files. */
+ assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB );
+ assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL );
+ assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MASTER_JOURNAL );
+ assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL );
+
+ /* Assert that the upper layer has set one of the "file-type" flags. */
+ assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB
+ || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL
+ || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_MASTER_JOURNAL
+ || eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL
+ );
+
+ memset( pFile, 0, sizeof(*pFile) );
+ pFile->h = (HFILE)-1;
/* If the second argument to this function is NULL, generate a
** temporary file name to use
*/
- if( !zName ){
- int rc = getTempname(CCHMAXPATH+1, zTmpname);
+ if( !zUtf8Name ){
+ assert(isDelete && !isOpenJournal);
+ rc = getTempname(CCHMAXPATH, zTmpname);
if( rc!=SQLITE_OK ){
return rc;
}
- zName = zTmpname;
+ zUtf8Name = zTmpname;
}
-
- memset( pFile, 0, sizeof(*pFile) );
-
- OSTRACE(( "OPEN want %d\n", flags ));
-
- if( flags & SQLITE_OPEN_READWRITE ){
+ if( isReadWrite ){
ulOpenMode |= OPEN_ACCESS_READWRITE;
- OSTRACE(( "OPEN read/write\n" ));
}else{
ulOpenMode |= OPEN_ACCESS_READONLY;
- OSTRACE(( "OPEN read only\n" ));
}
- if( flags & SQLITE_OPEN_CREATE ){
- ulOpenFlags |= OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW;
- OSTRACE(( "OPEN open new/create\n" ));
+ /* Open in random access mode for possibly better speed. Allow full
+ ** sharing because file locks will provide exclusive access when needed.
+ ** The handle should not be inherited by child processes and we don't
+ ** want popups from the critical error handler.
+ */
+ ulOpenMode |= OPEN_FLAGS_RANDOM | OPEN_SHARE_DENYNONE |
+ OPEN_FLAGS_NOINHERIT | OPEN_FLAGS_FAIL_ON_ERROR;
+
+ /* SQLITE_OPEN_EXCLUSIVE is used to make sure that a new file is
+ ** created. SQLite doesn't use it to indicate "exclusive access"
+ ** as it is usually understood.
+ */
+ if( isExclusive ){
+ /* Creates a new file, only if it does not already exist. */
+ /* If the file exists, it fails. */
+ ulOpenFlags |= OPEN_ACTION_CREATE_IF_NEW | OPEN_ACTION_FAIL_IF_EXISTS;
+ }else if( isCreate ){
+ /* Open existing file, or create if it doesn't exist */
+ ulOpenFlags |= OPEN_ACTION_CREATE_IF_NEW | OPEN_ACTION_OPEN_IF_EXISTS;
}else{
- ulOpenFlags |= OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW;
- OSTRACE(( "OPEN open existing\n" ));
+ /* Opens a file, only if it exists. */
+ ulOpenFlags |= OPEN_ACTION_FAIL_IF_NEW | OPEN_ACTION_OPEN_IF_EXISTS;
}
- if( flags & SQLITE_OPEN_MAIN_DB ){
- ulOpenMode |= OPEN_SHARE_DENYNONE;
- OSTRACE(( "OPEN share read/write\n" ));
- }else{
- ulOpenMode |= OPEN_SHARE_DENYWRITE;
- OSTRACE(( "OPEN share read only\n" ));
- }
-
- if( flags & SQLITE_OPEN_DELETEONCLOSE ){
- char pathUtf8[CCHMAXPATH];
-#ifdef NDEBUG /* when debugging we want to make sure it is deleted */
- ulFileAttribute = FILE_HIDDEN;
-#endif
- os2FullPathname( pVfs, zName, CCHMAXPATH, pathUtf8 );
- pFile->pathToDel = convertUtf8PathToCp( pathUtf8 );
- OSTRACE(( "OPEN hidden/delete on close file attributes\n" ));
- }else{
- pFile->pathToDel = NULL;
- OSTRACE(( "OPEN normal file attribute\n" ));
- }
-
- /* always open in random access mode for possibly better speed */
- ulOpenMode |= OPEN_FLAGS_RANDOM;
- ulOpenMode |= OPEN_FLAGS_FAIL_ON_ERROR;
- ulOpenMode |= OPEN_FLAGS_NOINHERIT;
-
- zNameCp = convertUtf8PathToCp( zName );
+ zNameCp = convertUtf8PathToCp( zUtf8Name );
rc = DosOpen( (PSZ)zNameCp,
&h,
&ulAction,
0L,
- ulFileAttribute,
+ FILE_NORMAL,
ulOpenFlags,
ulOpenMode,
(PEAOP2)NULL );
free( zNameCp );
+
if( rc != NO_ERROR ){
- OSTRACE(( "OPEN Invalid handle rc=%d: zName=%s, ulAction=%#lx, ulAttr=%#lx, ulFlags=%#lx, ulMode=%#lx\n",
- rc, zName, ulAction, ulFileAttribute, ulOpenFlags, ulOpenMode ));
- if( pFile->pathToDel )
- free( pFile->pathToDel );
- pFile->pathToDel = NULL;
- if( flags & SQLITE_OPEN_READWRITE ){
- OSTRACE(( "OPEN %d Invalid handle\n",
- ((flags | SQLITE_OPEN_READONLY) & ~SQLITE_OPEN_READWRITE) ));
+ OSTRACE(( "OPEN Invalid handle rc=%d: zName=%s, ulAction=%#lx, ulFlags=%#lx, ulMode=%#lx\n",
+ rc, zUtf8Name, ulAction, ulOpenFlags, ulOpenMode ));
+
+ if( isReadWrite ){
return os2Open( pVfs, zName, id,
- ((flags | SQLITE_OPEN_READONLY) & ~SQLITE_OPEN_READWRITE),
+ ((flags|SQLITE_OPEN_READONLY)&~(SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE)),
pOutFlags );
}else{
return SQLITE_CANTOPEN;
@@ -22514,11 +24394,15 @@
}
if( pOutFlags ){
- *pOutFlags = flags & SQLITE_OPEN_READWRITE ? SQLITE_OPEN_READWRITE : SQLITE_OPEN_READONLY;
+ *pOutFlags = isReadWrite ? SQLITE_OPEN_READWRITE : SQLITE_OPEN_READONLY;
}
+ os2FullPathname( pVfs, zUtf8Name, sizeof( zTmpname ), zTmpname );
+ pFile->zFullPathCp = convertUtf8PathToCp( zTmpname );
pFile->pMethod = &os2IoMethod;
+ pFile->flags = flags;
pFile->h = h;
+
OpenCounter(+1);
OSTRACE(( "OPEN %d pOutFlags=%d\n", pFile->h, pOutFlags ));
return SQLITE_OK;
@@ -22532,13 +24416,16 @@
const char *zFilename, /* Name of file to delete */
int syncDir /* Not used on os2 */
){
- APIRET rc = NO_ERROR;
- char *zFilenameCp = convertUtf8PathToCp( zFilename );
+ APIRET rc;
+ char *zFilenameCp;
SimulateIOError( return SQLITE_IOERR_DELETE );
+ zFilenameCp = convertUtf8PathToCp( zFilename );
rc = DosDelete( (PSZ)zFilenameCp );
free( zFilenameCp );
OSTRACE(( "DELETE \"%s\"\n", zFilename ));
- return rc == NO_ERROR ? SQLITE_OK : SQLITE_IOERR_DELETE;
+ return (rc == NO_ERROR ||
+ rc == ERROR_FILE_NOT_FOUND ||
+ rc == ERROR_PATH_NOT_FOUND ) ? SQLITE_OK : SQLITE_IOERR_DELETE;
}
/*
@@ -22550,30 +24437,42 @@
int flags, /* Type of test to make on this file */
int *pOut /* Write results here */
){
+ APIRET rc;
FILESTATUS3 fsts3ConfigInfo;
- APIRET rc = NO_ERROR;
- char *zFilenameCp = convertUtf8PathToCp( zFilename );
+ char *zFilenameCp;
- memset( &fsts3ConfigInfo, 0, sizeof(fsts3ConfigInfo) );
+ UNUSED_PARAMETER(pVfs);
+ SimulateIOError( return SQLITE_IOERR_ACCESS; );
+
+ zFilenameCp = convertUtf8PathToCp( zFilename );
rc = DosQueryPathInfo( (PSZ)zFilenameCp, FIL_STANDARD,
&fsts3ConfigInfo, sizeof(FILESTATUS3) );
free( zFilenameCp );
OSTRACE(( "ACCESS fsts3ConfigInfo.attrFile=%d flags=%d rc=%d\n",
fsts3ConfigInfo.attrFile, flags, rc ));
+
switch( flags ){
- case SQLITE_ACCESS_READ:
case SQLITE_ACCESS_EXISTS:
- rc = (rc == NO_ERROR);
- OSTRACE(( "ACCESS %s access of read and exists rc=%d\n", zFilename, rc));
+ /* For an SQLITE_ACCESS_EXISTS query, treat a zero-length file
+ ** as if it does not exist.
+ */
+ if( fsts3ConfigInfo.cbFile == 0 )
+ rc = ERROR_FILE_NOT_FOUND;
+ break;
+ case SQLITE_ACCESS_READ:
break;
case SQLITE_ACCESS_READWRITE:
- rc = (rc == NO_ERROR) && ( (fsts3ConfigInfo.attrFile & FILE_READONLY) == 0 );
- OSTRACE(( "ACCESS %s access of read/write rc=%d\n", zFilename, rc ));
+ if( fsts3ConfigInfo.attrFile & FILE_READONLY )
+ rc = ERROR_ACCESS_DENIED;
break;
default:
+ rc = ERROR_FILE_NOT_FOUND;
assert( !"Invalid flags argument" );
}
- *pOut = rc;
+
+ *pOut = (rc == NO_ERROR);
+ OSTRACE(( "ACCESS %s flags %d: rc=%d\n", zFilename, flags, *pOut ));
+
return SQLITE_OK;
}
@@ -22588,11 +24487,10 @@
** within the shared library, and closing the shared library.
*/
static void *os2DlOpen(sqlite3_vfs *pVfs, const char *zFilename){
- UCHAR loadErr[256];
HMODULE hmod;
APIRET rc;
char *zFilenameCp = convertUtf8PathToCp(zFilename);
- rc = DosLoadModule((PSZ)loadErr, sizeof(loadErr), zFilenameCp, &hmod);
+ rc = DosLoadModule(NULL, 0, (PSZ)zFilenameCp, &hmod);
free(zFilenameCp);
return rc != NO_ERROR ? 0 : (void*)hmod;
}
@@ -22603,19 +24501,19 @@
static void os2DlError(sqlite3_vfs *pVfs, int nBuf, char *zBufOut){
/* no-op */
}
-static void *os2DlSym(sqlite3_vfs *pVfs, void *pHandle, const char *zSymbol){
+static void (*os2DlSym(sqlite3_vfs *pVfs, void *pHandle, const char *zSymbol))(void){
PFN pfn;
APIRET rc;
- rc = DosQueryProcAddr((HMODULE)pHandle, 0L, zSymbol, &pfn);
+ rc = DosQueryProcAddr((HMODULE)pHandle, 0L, (PSZ)zSymbol, &pfn);
if( rc != NO_ERROR ){
/* if the symbol itself was not found, search again for the same
* symbol with an extra underscore, that might be needed depending
* on the calling convention */
char _zSymbol[256] = "_";
- strncat(_zSymbol, zSymbol, 255);
- rc = DosQueryProcAddr((HMODULE)pHandle, 0L, _zSymbol, &pfn);
+ strncat(_zSymbol, zSymbol, 254);
+ rc = DosQueryProcAddr((HMODULE)pHandle, 0L, (PSZ)_zSymbol, &pfn);
}
- return rc != NO_ERROR ? 0 : (void*)pfn;
+ return rc != NO_ERROR ? 0 : (void(*)(void))pfn;
}
static void os2DlClose(sqlite3_vfs *pVfs, void *pHandle){
DosFreeModule((HMODULE)pHandle);
@@ -22637,54 +24535,39 @@
n = nBuf;
memset(zBuf, 0, nBuf);
#else
- int sizeofULong = sizeof(ULONG);
- if( (int)sizeof(DATETIME) <= nBuf - n ){
- DATETIME x;
- DosGetDateTime(&x);
- memcpy(&zBuf[n], &x, sizeof(x));
- n += sizeof(x);
+ int i;
+ PPIB ppib;
+ PTIB ptib;
+ DATETIME dt;
+ static unsigned c = 0;
+ /* Ordered by variation probability */
+ static ULONG svIdx[6] = { QSV_MS_COUNT, QSV_TIME_LOW,
+ QSV_MAXPRMEM, QSV_MAXSHMEM,
+ QSV_TOTAVAILMEM, QSV_TOTRESMEM };
+
+ /* 8 bytes; timezone and weekday don't increase the randomness much */
+ if( (int)sizeof(dt)-3 <= nBuf - n ){
+ c += 0x0100;
+ DosGetDateTime(&dt);
+ dt.year = (USHORT)((dt.year - 1900) | c);
+ memcpy(&zBuf[n], &dt, sizeof(dt)-3);
+ n += sizeof(dt)-3;
}
- if( sizeofULong <= nBuf - n ){
- PPIB ppib;
- DosGetInfoBlocks(NULL, &ppib);
- memcpy(&zBuf[n], &ppib->pib_ulpid, sizeofULong);
- n += sizeofULong;
+ /* 4 bytes; PIDs and TIDs are 16 bit internally, so combine them */
+ if( (int)sizeof(ULONG) <= nBuf - n ){
+ DosGetInfoBlocks(&ptib, &ppib);
+ *(PULONG)&zBuf[n] = MAKELONG(ppib->pib_ulpid,
+ ptib->tib_ptib2->tib2_ultid);
+ n += sizeof(ULONG);
}
- if( sizeofULong <= nBuf - n ){
- PTIB ptib;
- DosGetInfoBlocks(&ptib, NULL);
- memcpy(&zBuf[n], &ptib->tib_ptib2->tib2_ultid, sizeofULong);
- n += sizeofULong;
- }
-
- /* if we still haven't filled the buffer yet the following will */
- /* grab everything once instead of making several calls for a single item */
- if( sizeofULong <= nBuf - n ){
- ULONG ulSysInfo[QSV_MAX];
- DosQuerySysInfo(1L, QSV_MAX, ulSysInfo, sizeofULong * QSV_MAX);
-
- memcpy(&zBuf[n], &ulSysInfo[QSV_MS_COUNT - 1], sizeofULong);
- n += sizeofULong;
-
- if( sizeofULong <= nBuf - n ){
- memcpy(&zBuf[n], &ulSysInfo[QSV_TIMER_INTERVAL - 1], sizeofULong);
- n += sizeofULong;
- }
- if( sizeofULong <= nBuf - n ){
- memcpy(&zBuf[n], &ulSysInfo[QSV_TIME_LOW - 1], sizeofULong);
- n += sizeofULong;
- }
- if( sizeofULong <= nBuf - n ){
- memcpy(&zBuf[n], &ulSysInfo[QSV_TIME_HIGH - 1], sizeofULong);
- n += sizeofULong;
- }
- if( sizeofULong <= nBuf - n ){
- memcpy(&zBuf[n], &ulSysInfo[QSV_TOTAVAILMEM - 1], sizeofULong);
- n += sizeofULong;
- }
- }
+ /* Up to 6 * 4 bytes; variables depend on the system state */
+ for( i = 0; i < 6 && (int)sizeof(ULONG) <= nBuf - n; i++ ){
+ DosQuerySysInfo(svIdx[i], svIdx[i],
+ (PULONG)&zBuf[n], sizeof(ULONG));
+ n += sizeof(ULONG);
+ }
#endif
return n;
@@ -22712,46 +24595,98 @@
#endif
/*
-** Find the current time (in Universal Coordinated Time). Write the
-** current time and date as a Julian Day number into *prNow and
-** return 0. Return 1 if the time and date cannot be found.
+** Find the current time (in Universal Coordinated Time). Write into *piNow
+** the current time and date as a Julian Day number times 86_400_000. In
+** other words, write into *piNow the number of milliseconds since the Julian
+** epoch of noon in Greenwich on November 24, 4714 B.C according to the
+** proleptic Gregorian calendar.
+**
+** On success, return 0. Return 1 if the time and date cannot be found.
*/
-int os2CurrentTime( sqlite3_vfs *pVfs, double *prNow ){
- double now;
- SHORT minute; /* needs to be able to cope with negative timezone offset */
- USHORT second, hour,
- day, month, year;
+static int os2CurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *piNow){
+#ifdef SQLITE_TEST
+ static const sqlite3_int64 unixEpoch = 24405875*(sqlite3_int64)8640000;
+#endif
+ int year, month, datepart, timepart;
+
DATETIME dt;
DosGetDateTime( &dt );
- second = (USHORT)dt.seconds;
- minute = (SHORT)dt.minutes + dt.timezone;
- hour = (USHORT)dt.hours;
- day = (USHORT)dt.day;
- month = (USHORT)dt.month;
- year = (USHORT)dt.year;
+
+ year = dt.year;
+ month = dt.month;
/* Calculations from http://www.astro.keele.ac.uk/~rno/Astronomy/hjd.html
- http://www.astro.keele.ac.uk/~rno/Astronomy/hjd-0.1.c */
- /* Calculate the Julian days */
- now = day - 32076 +
+ ** http://www.astro.keele.ac.uk/~rno/Astronomy/hjd-0.1.c
+ ** Calculate the Julian days
+ */
+ datepart = (int)dt.day - 32076 +
1461*(year + 4800 + (month - 14)/12)/4 +
367*(month - 2 - (month - 14)/12*12)/12 -
3*((year + 4900 + (month - 14)/12)/100)/4;
- /* Add the fractional hours, mins and seconds */
- now += (hour + 12.0)/24.0;
- now += minute/1440.0;
- now += second/86400.0;
- *prNow = now;
+ /* Time in milliseconds, hours to noon added */
+ timepart = 12*3600*1000 + dt.hundredths*10 + dt.seconds*1000 +
+ ((int)dt.minutes + dt.timezone)*60*1000 + dt.hours*3600*1000;
+
+ *piNow = (sqlite3_int64)datepart*86400*1000 + timepart;
+
#ifdef SQLITE_TEST
if( sqlite3_current_time ){
- *prNow = sqlite3_current_time/86400.0 + 2440587.5;
+ *piNow = 1000*(sqlite3_int64)sqlite3_current_time + unixEpoch;
}
#endif
+
+ UNUSED_PARAMETER(pVfs);
return 0;
}
+/*
+** Find the current time (in Universal Coordinated Time). Write the
+** current time and date as a Julian Day number into *prNow and
+** return 0. Return 1 if the time and date cannot be found.
+*/
+static int os2CurrentTime( sqlite3_vfs *pVfs, double *prNow ){
+ int rc;
+ sqlite3_int64 i;
+ rc = os2CurrentTimeInt64(pVfs, &i);
+ if( !rc ){
+ *prNow = i/86400000.0;
+ }
+ return rc;
+}
+
+/*
+** The idea is that this function works like a combination of
+** GetLastError() and FormatMessage() on windows (or errno and
+** strerror_r() on unix). After an error is returned by an OS
+** function, SQLite calls this function with zBuf pointing to
+** a buffer of nBuf bytes. The OS layer should populate the
+** buffer with a nul-terminated UTF-8 encoded error message
+** describing the last IO error to have occurred within the calling
+** thread.
+**
+** If the error message is too large for the supplied buffer,
+** it should be truncated. The return value of xGetLastError
+** is zero if the error message fits in the buffer, or non-zero
+** otherwise (if the message was truncated). If non-zero is returned,
+** then it is not necessary to include the nul-terminator character
+** in the output buffer.
+**
+** Not supplying an error message will have no adverse effect
+** on SQLite. It is fine to have an implementation that never
+** returns an error message:
+**
+** int xGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
+** assert(zBuf[0]=='\0');
+** return 0;
+** }
+**
+** However if an error message is supplied, it will be incorporated
+** by sqlite into the error message available to the user using
+** sqlite3_errmsg(), possibly making IO errors easier to debug.
+*/
static int os2GetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
+ assert(zBuf[0]=='\0');
return 0;
}
@@ -22760,7 +24695,7 @@
*/
SQLITE_API int sqlite3_os_init(void){
static sqlite3_vfs os2Vfs = {
- 1, /* iVersion */
+ 3, /* iVersion */
sizeof(os2File), /* szOsFile */
CCHMAXPATH, /* mxPathname */
0, /* pNext */
@@ -22779,9 +24714,14 @@
os2Sleep, /* xSleep */
os2CurrentTime, /* xCurrentTime */
os2GetLastError, /* xGetLastError */
+ os2CurrentTimeInt64, /* xCurrentTimeInt64 */
+ 0, /* xSetSystemCall */
+ 0, /* xGetSystemCall */
+ 0 /* xNextSystemCall */
};
sqlite3_vfs_register(&os2Vfs, 1);
initUconvObjects();
+/* sqlite3OSTrace = 1; */
return SQLITE_OK;
}
SQLITE_API int sqlite3_os_end(void){
@@ -22910,9 +24850,13 @@
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
+/* #include <time.h> */
#include <sys/time.h>
#include <errno.h>
+#ifndef SQLITE_OMIT_WAL
#include <sys/mman.h>
+#endif
+
#if SQLITE_ENABLE_LOCKING_STYLE
# include <sys/ioctl.h>
@@ -22929,6 +24873,10 @@
# include <sys/mount.h>
#endif
+#ifdef HAVE_UTIME
+# include <utime.h>
+#endif
+
/*
** Allowed values of unixFile.fsFlags
*/
@@ -22939,6 +24887,7 @@
** the SQLITE_UNIX_THREADS macro.
*/
#if SQLITE_THREADSAFE
+/* # include <pthread.h> */
# define SQLITE_UNIX_THREADS 1
#endif
@@ -22992,14 +24941,14 @@
typedef struct unixFile unixFile;
struct unixFile {
sqlite3_io_methods const *pMethod; /* Always the first entry */
+ sqlite3_vfs *pVfs; /* The VFS that created this unixFile */
unixInodeInfo *pInode; /* Info about locks on this inode */
int h; /* The file descriptor */
- int dirfd; /* File descriptor for the directory */
unsigned char eFileLock; /* The type of lock held on this fd */
+ unsigned char ctrlFlags; /* Behavioral bits. UNIXFILE_* flags */
int lastErrno; /* The unix errno from last I/O error */
void *lockingContext; /* Locking style specific state */
UnixUnusedFd *pUnused; /* Pre-allocated UnixUnusedFd */
- int fileFlags; /* Miscellanous flags */
const char *zPath; /* Name of the file */
unixShm *pShm; /* Shared memory segment information */
int szChunk; /* Configured by FCNTL_CHUNK_SIZE */
@@ -23010,7 +24959,6 @@
unsigned fsFlags; /* cached details from statfs() */
#endif
#if OS_VXWORKS
- int isDelete; /* Delete on close if true */
struct vxworksFileId *pId; /* Unique file ID */
#endif
#ifndef NDEBUG
@@ -23034,9 +24982,20 @@
};
/*
-** The following macros define bits in unixFile.fileFlags
+** Allowed values for the unixFile.ctrlFlags bitmask:
*/
-#define SQLITE_WHOLE_FILE_LOCKING 0x0001 /* Use whole-file locking */
+#define UNIXFILE_EXCL 0x01 /* Connections from one process only */
+#define UNIXFILE_RDONLY 0x02 /* Connection is read only */
+#define UNIXFILE_PERSIST_WAL 0x04 /* Persistent WAL mode */
+#ifndef SQLITE_DISABLE_DIRSYNC
+# define UNIXFILE_DIRSYNC 0x08 /* Directory sync needed */
+#else
+# define UNIXFILE_DIRSYNC 0x00
+#endif
+#define UNIXFILE_PSOW 0x10 /* SQLITE_IOCAP_POWERSAFE_OVERWRITE */
+#define UNIXFILE_DELETE 0x20 /* Delete on close */
+#define UNIXFILE_URI 0x40 /* Filename might have query parameters */
+#define UNIXFILE_NOLOCK 0x80 /* Do no file locking */
/*
** Include code that is common to all os_*.c files
@@ -23074,11 +25033,14 @@
# error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead."
#endif
-#ifdef SQLITE_DEBUG
-SQLITE_PRIVATE int sqlite3OSTrace = 0;
-#define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X
+#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG)
+# ifndef SQLITE_DEBUG_OS_TRACE
+# define SQLITE_DEBUG_OS_TRACE 0
+# endif
+ int sqlite3OSTrace = SQLITE_DEBUG_OS_TRACE;
+# define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X
#else
-#define OSTRACE(X)
+# define OSTRACE(X)
#endif
/*
@@ -23266,16 +25228,6 @@
#endif
/*
-** The DJGPP compiler environment looks mostly like Unix, but it
-** lacks the fcntl() system call. So redefine fcntl() to be something
-** that always succeeds. This means that locking does not occur under
-** DJGPP. But it is DOS - what did you expect?
-*/
-#ifdef __DJGPP__
-# define fcntl(A,B,C) 0
-#endif
-
-/*
** The threadid macro resolves to the thread-id or to 0. Used for
** testing and debugging only.
*/
@@ -23285,6 +25237,233 @@
#define threadid 0
#endif
+/*
+** Different Unix systems declare open() in different ways. Same use
+** open(const char*,int,mode_t). Others use open(const char*,int,...).
+** The difference is important when using a pointer to the function.
+**
+** The safest way to deal with the problem is to always use this wrapper
+** which always has the same well-defined interface.
+*/
+static int posixOpen(const char *zFile, int flags, int mode){
+ return open(zFile, flags, mode);
+}
+
+/* Forward reference */
+static int openDirectory(const char*, int*);
+
+/*
+** Many system calls are accessed through pointer-to-functions so that
+** they may be overridden at runtime to facilitate fault injection during
+** testing and sandboxing. The following array holds the names and pointers
+** to all overrideable system calls.
+*/
+static struct unix_syscall {
+ const char *zName; /* Name of the sytem call */
+ sqlite3_syscall_ptr pCurrent; /* Current value of the system call */
+ sqlite3_syscall_ptr pDefault; /* Default value */
+} aSyscall[] = {
+ { "open", (sqlite3_syscall_ptr)posixOpen, 0 },
+#define osOpen ((int(*)(const char*,int,int))aSyscall[0].pCurrent)
+
+ { "close", (sqlite3_syscall_ptr)close, 0 },
+#define osClose ((int(*)(int))aSyscall[1].pCurrent)
+
+ { "access", (sqlite3_syscall_ptr)access, 0 },
+#define osAccess ((int(*)(const char*,int))aSyscall[2].pCurrent)
+
+ { "getcwd", (sqlite3_syscall_ptr)getcwd, 0 },
+#define osGetcwd ((char*(*)(char*,size_t))aSyscall[3].pCurrent)
+
+ { "stat", (sqlite3_syscall_ptr)stat, 0 },
+#define osStat ((int(*)(const char*,struct stat*))aSyscall[4].pCurrent)
+
+/*
+** The DJGPP compiler environment looks mostly like Unix, but it
+** lacks the fcntl() system call. So redefine fcntl() to be something
+** that always succeeds. This means that locking does not occur under
+** DJGPP. But it is DOS - what did you expect?
+*/
+#ifdef __DJGPP__
+ { "fstat", 0, 0 },
+#define osFstat(a,b,c) 0
+#else
+ { "fstat", (sqlite3_syscall_ptr)fstat, 0 },
+#define osFstat ((int(*)(int,struct stat*))aSyscall[5].pCurrent)
+#endif
+
+ { "ftruncate", (sqlite3_syscall_ptr)ftruncate, 0 },
+#define osFtruncate ((int(*)(int,off_t))aSyscall[6].pCurrent)
+
+ { "fcntl", (sqlite3_syscall_ptr)fcntl, 0 },
+#define osFcntl ((int(*)(int,int,...))aSyscall[7].pCurrent)
+
+ { "read", (sqlite3_syscall_ptr)read, 0 },
+#define osRead ((ssize_t(*)(int,void*,size_t))aSyscall[8].pCurrent)
+
+#if defined(USE_PREAD) || SQLITE_ENABLE_LOCKING_STYLE
+ { "pread", (sqlite3_syscall_ptr)pread, 0 },
+#else
+ { "pread", (sqlite3_syscall_ptr)0, 0 },
+#endif
+#define osPread ((ssize_t(*)(int,void*,size_t,off_t))aSyscall[9].pCurrent)
+
+#if defined(USE_PREAD64)
+ { "pread64", (sqlite3_syscall_ptr)pread64, 0 },
+#else
+ { "pread64", (sqlite3_syscall_ptr)0, 0 },
+#endif
+#ifdef ANDROID
+// Bionic defines pread64 using off64_t rather than off_t.
+#define osPread64 ((ssize_t(*)(int,void*,size_t,off64_t))aSyscall[10].pCurrent)
+#else
+#define osPread64 ((ssize_t(*)(int,void*,size_t,off_t))aSyscall[10].pCurrent)
+#endif
+
+ { "write", (sqlite3_syscall_ptr)write, 0 },
+#define osWrite ((ssize_t(*)(int,const void*,size_t))aSyscall[11].pCurrent)
+
+#if defined(USE_PREAD) || SQLITE_ENABLE_LOCKING_STYLE
+ { "pwrite", (sqlite3_syscall_ptr)pwrite, 0 },
+#else
+ { "pwrite", (sqlite3_syscall_ptr)0, 0 },
+#endif
+#define osPwrite ((ssize_t(*)(int,const void*,size_t,off_t))\
+ aSyscall[12].pCurrent)
+
+#if defined(USE_PREAD64)
+ { "pwrite64", (sqlite3_syscall_ptr)pwrite64, 0 },
+#else
+ { "pwrite64", (sqlite3_syscall_ptr)0, 0 },
+#endif
+#ifdef ANDROID
+// Bionic defines pwrite64 using off64_t rather than off_t.
+#define osPwrite64 ((ssize_t(*)(int,const void*,size_t,off64_t))\
+ aSyscall[13].pCurrent)
+#else
+#define osPwrite64 ((ssize_t(*)(int,const void*,size_t,off_t))\
+ aSyscall[13].pCurrent)
+#endif
+
+#if SQLITE_ENABLE_LOCKING_STYLE
+ { "fchmod", (sqlite3_syscall_ptr)fchmod, 0 },
+#else
+ { "fchmod", (sqlite3_syscall_ptr)0, 0 },
+#endif
+#define osFchmod ((int(*)(int,mode_t))aSyscall[14].pCurrent)
+
+#if defined(HAVE_POSIX_FALLOCATE) && HAVE_POSIX_FALLOCATE
+ { "fallocate", (sqlite3_syscall_ptr)posix_fallocate, 0 },
+#else
+ { "fallocate", (sqlite3_syscall_ptr)0, 0 },
+#endif
+#define osFallocate ((int(*)(int,off_t,off_t))aSyscall[15].pCurrent)
+
+ { "unlink", (sqlite3_syscall_ptr)unlink, 0 },
+#define osUnlink ((int(*)(const char*))aSyscall[16].pCurrent)
+
+ { "openDirectory", (sqlite3_syscall_ptr)openDirectory, 0 },
+#define osOpenDirectory ((int(*)(const char*,int*))aSyscall[17].pCurrent)
+
+ { "mkdir", (sqlite3_syscall_ptr)mkdir, 0 },
+#define osMkdir ((int(*)(const char*,mode_t))aSyscall[18].pCurrent)
+
+ { "rmdir", (sqlite3_syscall_ptr)rmdir, 0 },
+#define osRmdir ((int(*)(const char*))aSyscall[19].pCurrent)
+
+}; /* End of the overrideable system calls */
+
+/*
+** This is the xSetSystemCall() method of sqlite3_vfs for all of the
+** "unix" VFSes. Return SQLITE_OK opon successfully updating the
+** system call pointer, or SQLITE_NOTFOUND if there is no configurable
+** system call named zName.
+*/
+static int unixSetSystemCall(
+ sqlite3_vfs *pNotUsed, /* The VFS pointer. Not used */
+ const char *zName, /* Name of system call to override */
+ sqlite3_syscall_ptr pNewFunc /* Pointer to new system call value */
+){
+ unsigned int i;
+ int rc = SQLITE_NOTFOUND;
+
+ UNUSED_PARAMETER(pNotUsed);
+ if( zName==0 ){
+ /* If no zName is given, restore all system calls to their default
+ ** settings and return NULL
+ */
+ rc = SQLITE_OK;
+ for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
+ if( aSyscall[i].pDefault ){
+ aSyscall[i].pCurrent = aSyscall[i].pDefault;
+ }
+ }
+ }else{
+ /* If zName is specified, operate on only the one system call
+ ** specified.
+ */
+ for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
+ if( strcmp(zName, aSyscall[i].zName)==0 ){
+ if( aSyscall[i].pDefault==0 ){
+ aSyscall[i].pDefault = aSyscall[i].pCurrent;
+ }
+ rc = SQLITE_OK;
+ if( pNewFunc==0 ) pNewFunc = aSyscall[i].pDefault;
+ aSyscall[i].pCurrent = pNewFunc;
+ break;
+ }
+ }
+ }
+ return rc;
+}
+
+/*
+** Return the value of a system call. Return NULL if zName is not a
+** recognized system call name. NULL is also returned if the system call
+** is currently undefined.
+*/
+static sqlite3_syscall_ptr unixGetSystemCall(
+ sqlite3_vfs *pNotUsed,
+ const char *zName
+){
+ unsigned int i;
+
+ UNUSED_PARAMETER(pNotUsed);
+ for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
+ if( strcmp(zName, aSyscall[i].zName)==0 ) return aSyscall[i].pCurrent;
+ }
+ return 0;
+}
+
+/*
+** Return the name of the first system call after zName. If zName==NULL
+** then return the name of the first system call. Return NULL if zName
+** is the last system call or if zName is not the name of a valid
+** system call.
+*/
+static const char *unixNextSystemCall(sqlite3_vfs *p, const char *zName){
+ int i = -1;
+
+ UNUSED_PARAMETER(p);
+ if( zName ){
+ for(i=0; i<ArraySize(aSyscall)-1; i++){
+ if( strcmp(zName, aSyscall[i].zName)==0 ) break;
+ }
+ }
+ for(i++; i<ArraySize(aSyscall); i++){
+ if( aSyscall[i].pCurrent!=0 ) return aSyscall[i].zName;
+ }
+ return 0;
+}
+
+/*
+** Retry open() calls that fail due to EINTR
+*/
+static int robust_open(const char *z, int f, int m){
+ int rc;
+ do{ rc = osOpen(z,f,m); }while( rc<0 && errno==EINTR );
+ return rc;
+}
/*
** Helper functions to obtain and relinquish the global mutex. The
@@ -23313,7 +25492,7 @@
#endif
-#ifdef SQLITE_DEBUG
+#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG)
/*
** Helper function for printing out trace information from debugging
** binaries. This returns the string represetation of the supplied
@@ -23349,7 +25528,7 @@
}else if( op==F_SETLK ){
zOpName = "SETLK";
}else{
- s = fcntl(fd, op, p);
+ s = osFcntl(fd, op, p);
sqlite3DebugPrintf("fcntl unknown %d %d %d\n", fd, op, s);
return s;
}
@@ -23363,7 +25542,7 @@
assert( 0 );
}
assert( p->l_whence==SEEK_SET );
- s = fcntl(fd, op, p);
+ s = osFcntl(fd, op, p);
savedErrno = errno;
sqlite3DebugPrintf("fcntl %d %d %s %s %d %d %d %d\n",
threadid, fd, zOpName, zType, (int)p->l_start, (int)p->l_len,
@@ -23371,7 +25550,7 @@
if( s==(-1) && op==F_SETLK && (p->l_type==F_RDLCK || p->l_type==F_WRLCK) ){
struct flock l2;
l2 = *p;
- fcntl(fd, F_GETLK, &l2);
+ osFcntl(fd, F_GETLK, &l2);
if( l2.l_type==F_RDLCK ){
zType = "RDLCK";
}else if( l2.l_type==F_WRLCK ){
@@ -23387,23 +25566,18 @@
errno = savedErrno;
return s;
}
-#define fcntl lockTrace
+#undef osFcntl
+#define osFcntl lockTrace
#endif /* SQLITE_LOCK_TRACE */
-
/*
** Retry ftruncate() calls that fail due to EINTR
*/
-#ifdef EINTR
static int robust_ftruncate(int h, sqlite3_int64 sz){
int rc;
- do{ rc = ftruncate(h,sz); }while( rc<0 && errno==EINTR );
+ do{ rc = osFtruncate(h,sz); }while( rc<0 && errno==EINTR );
return rc;
}
-#else
-# define robust_ftruncate(a,b) ftruncate(a,b)
-#endif
-
/*
** This routine translates a standard POSIX errno code into something
@@ -23417,9 +25591,22 @@
*/
static int sqliteErrorFromPosixError(int posixError, int sqliteIOErr) {
switch (posixError) {
+#if 0
+ /* At one point this code was not commented out. In theory, this branch
+ ** should never be hit, as this function should only be called after
+ ** a locking-related function (i.e. fcntl()) has returned non-zero with
+ ** the value of errno as the first argument. Since a system call has failed,
+ ** errno should be non-zero.
+ **
+ ** Despite this, if errno really is zero, we still don't want to return
+ ** SQLITE_OK. The system call failed, and *some* SQLite error should be
+ ** propagated back to the caller. Commenting this branch out means errno==0
+ ** will be handled by the "default:" case below.
+ */
case 0:
return SQLITE_OK;
-
+#endif
+
case EAGAIN:
case ETIMEDOUT:
case EBUSY:
@@ -23441,8 +25628,15 @@
case EPERM:
return SQLITE_PERM;
+ /* EDEADLK is only possible if a call to fcntl(F_SETLKW) is made. And
+ ** this module never makes such a call. And the code in SQLite itself
+ ** asserts that SQLITE_IOERR_BLOCKED is never returned. For these reasons
+ ** this case is also commented out. If the system does set errno to EDEADLK,
+ ** the default SQLITE_IOERR_XXX code will be returned. */
+#if 0
case EDEADLK:
return SQLITE_IOERR_BLOCKED;
+#endif
#if EOPNOTSUPP!=ENOTSUP
case EOPNOTSUPP:
@@ -23461,7 +25655,9 @@
case ENODEV:
case ENXIO:
case ENOENT:
+#ifdef ESTALE /* ESTALE is not defined on Interix systems */
case ESTALE:
+#endif
case ENOSYS:
/* these should force the client to close the file and reconnect */
@@ -23725,14 +25921,15 @@
struct unixInodeInfo {
struct unixFileId fileId; /* The lookup key */
int nShared; /* Number of SHARED locks held */
- int eFileLock; /* One of SHARED_LOCK, RESERVED_LOCK etc. */
+ unsigned char eFileLock; /* One of SHARED_LOCK, RESERVED_LOCK etc. */
+ unsigned char bProcessLock; /* An exclusive process lock is held */
int nRef; /* Number of pointers to this structure */
unixShmNode *pShmNode; /* Shared memory associated with this inode */
int nLock; /* Number of outstanding file locks */
UnixUnusedFd *pUnused; /* Unused file descriptors to close */
unixInodeInfo *pNext; /* List of all unixInodeInfo objects */
unixInodeInfo *pPrev; /* .... doubly linked */
-#if defined(SQLITE_ENABLE_LOCKING_STYLE)
+#if SQLITE_ENABLE_LOCKING_STYLE
unsigned long long sharedByte; /* for AFP simulated shared lock */
#endif
#if OS_VXWORKS
@@ -23762,14 +25959,15 @@
** failed (e.g. "unlink", "open") and the the associated file-system path,
** if any.
*/
-#define unixLogError(a,b,c) unixLogError_x(a,b,c,__LINE__)
-static int unixLogError_x(
+#define unixLogError(a,b,c) unixLogErrorAtLine(a,b,c,__LINE__)
+static int unixLogErrorAtLine(
int errcode, /* SQLite error code */
const char *zFunc, /* Name of OS function that failed */
const char *zPath, /* File path associated with error */
int iLine /* Source line number where error occurred */
){
char *zErr; /* Message from strerror() or equivalent */
+ int iErrno = errno; /* Saved syscall error number */
/* If this is not a threadsafe build (SQLITE_THREADSAFE==0), then use
** the strerror() function to obtain the human-readable error message
@@ -23795,54 +25993,59 @@
#if defined(STRERROR_R_CHAR_P) || defined(__USE_GNU)
zErr =
# endif
- strerror_r(errno, aErr, sizeof(aErr)-1);
+ strerror_r(iErrno, aErr, sizeof(aErr)-1);
#elif SQLITE_THREADSAFE
/* This is a threadsafe build, but strerror_r() is not available. */
zErr = "";
#else
/* Non-threadsafe build, use strerror(). */
- zErr = strerror(errno);
+ zErr = strerror(iErrno);
#endif
assert( errcode!=SQLITE_OK );
+ if( zPath==0 ) zPath = "";
sqlite3_log(errcode,
- "os_unix.c: %s() at line %d - \"%s\" errno=%d path=%s",
- zFunc, iLine, zErr, errno, (zPath ? zPath : "n/a")
+ "os_unix.c:%d: (%d) %s(%s) - %s",
+ iLine, iErrno, zFunc, zPath, zErr
);
return errcode;
}
+/*
+** Close a file descriptor.
+**
+** We assume that close() almost always works, since it is only in a
+** very sick application or on a very sick platform that it might fail.
+** If it does fail, simply leak the file descriptor, but do log the
+** error.
+**
+** Note that it is not safe to retry close() after EINTR since the
+** file descriptor might have already been reused by another thread.
+** So we don't even try to recover from an EINTR. Just log the error
+** and move on.
+*/
+static void robust_close(unixFile *pFile, int h, int lineno){
+ if( osClose(h) ){
+ unixLogErrorAtLine(SQLITE_IOERR_CLOSE, "close",
+ pFile ? pFile->zPath : 0, lineno);
+ }
+}
/*
** Close all file descriptors accumuated in the unixInodeInfo->pUnused list.
-** If all such file descriptors are closed without error, the list is
-** cleared and SQLITE_OK returned.
-**
-** Otherwise, if an error occurs, then successfully closed file descriptor
-** entries are removed from the list, and SQLITE_IOERR_CLOSE returned.
-** not deleted and SQLITE_IOERR_CLOSE returned.
*/
-static int closePendingFds(unixFile *pFile){
- int rc = SQLITE_OK;
+static void closePendingFds(unixFile *pFile){
unixInodeInfo *pInode = pFile->pInode;
- UnixUnusedFd *pError = 0;
UnixUnusedFd *p;
UnixUnusedFd *pNext;
for(p=pInode->pUnused; p; p=pNext){
pNext = p->pNext;
- if( close(p->fd) ){
- pFile->lastErrno = errno;
- rc = unixLogError(SQLITE_IOERR_CLOSE, "close", pFile->zPath);
- p->pNext = pError;
- pError = p;
- }else{
- sqlite3_free(p);
- }
+ robust_close(pFile, p->fd, __LINE__);
+ sqlite3_free(p);
}
- pInode->pUnused = pError;
- return rc;
+ pInode->pUnused = 0;
}
/*
@@ -23854,7 +26057,7 @@
static void releaseInodeInfo(unixFile *pFile){
unixInodeInfo *pInode = pFile->pInode;
assert( unixMutexHeld() );
- if( pInode ){
+ if( ALWAYS(pInode) ){
pInode->nRef--;
if( pInode->nRef==0 ){
assert( pInode->pShmNode==0 );
@@ -23901,7 +26104,7 @@
** create a unique name for the file.
*/
fd = pFile->h;
- rc = fstat(fd, &statbuf);
+ rc = osFstat(fd, &statbuf);
if( rc!=0 ){
pFile->lastErrno = errno;
#ifdef EOVERFLOW
@@ -23922,12 +26125,12 @@
** the first page of the database, no damage is done.
*/
if( statbuf.st_size==0 && (pFile->fsFlags & SQLITE_FSFLAGS_IS_MSDOS)!=0 ){
- do{ rc = write(fd, "S", 1); }while( rc<0 && errno==EINTR );
+ do{ rc = osWrite(fd, "S", 1); }while( rc<0 && errno==EINTR );
if( rc!=1 ){
pFile->lastErrno = errno;
return SQLITE_IOERR;
}
- rc = fstat(fd, &statbuf);
+ rc = osFstat(fd, &statbuf);
if( rc!=0 ){
pFile->lastErrno = errno;
return SQLITE_IOERR;
@@ -23990,16 +26193,15 @@
/* Otherwise see if some other process holds it.
*/
#ifndef __DJGPP__
- if( !reserved ){
+ if( !reserved && !pFile->pInode->bProcessLock ){
struct flock lock;
lock.l_whence = SEEK_SET;
lock.l_start = RESERVED_BYTE;
lock.l_len = 1;
lock.l_type = F_WRLCK;
- if (-1 == fcntl(pFile->h, F_GETLK, &lock)) {
- int tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_CHECKRESERVEDLOCK);
- pFile->lastErrno = tErrno;
+ if( osFcntl(pFile->h, F_GETLK, &lock) ){
+ rc = SQLITE_IOERR_CHECKRESERVEDLOCK;
+ pFile->lastErrno = errno;
} else if( lock.l_type!=F_UNLCK ){
reserved = 1;
}
@@ -24014,6 +26216,53 @@
}
/*
+** Attempt to set a system-lock on the file pFile. The lock is
+** described by pLock.
+**
+** If the pFile was opened read/write from unix-excl, then the only lock
+** ever obtained is an exclusive lock, and it is obtained exactly once
+** the first time any lock is attempted. All subsequent system locking
+** operations become no-ops. Locking operations still happen internally,
+** in order to coordinate access between separate database connections
+** within this process, but all of that is handled in memory and the
+** operating system does not participate.
+**
+** This function is a pass-through to fcntl(F_SETLK) if pFile is using
+** any VFS other than "unix-excl" or if pFile is opened on "unix-excl"
+** and is read-only.
+**
+** Zero is returned if the call completes successfully, or -1 if a call
+** to fcntl() fails. In this case, errno is set appropriately (by fcntl()).
+*/
+static int unixFileLock(unixFile *pFile, struct flock *pLock){
+ int rc;
+ unixInodeInfo *pInode = pFile->pInode;
+ assert( unixMutexHeld() );
+ assert( pInode!=0 );
+ if( ((pFile->ctrlFlags & UNIXFILE_EXCL)!=0 || pInode->bProcessLock)
+ && ((pFile->ctrlFlags & UNIXFILE_RDONLY)==0)
+ ){
+ if( pInode->bProcessLock==0 ){
+ struct flock lock;
+ assert( pInode->nLock==0 );
+ lock.l_whence = SEEK_SET;
+ lock.l_start = SHARED_FIRST;
+ lock.l_len = SHARED_SIZE;
+ lock.l_type = F_WRLCK;
+ rc = osFcntl(pFile->h, F_SETLK, &lock);
+ if( rc<0 ) return rc;
+ pInode->bProcessLock = 1;
+ pInode->nLock++;
+ }else{
+ rc = 0;
+ }
+ }else{
+ rc = osFcntl(pFile->h, F_SETLK, pLock);
+ }
+ return rc;
+}
+
+/*
** Lock the file with the lock specified by parameter eFileLock - one
** of the following:
**
@@ -24078,15 +26327,14 @@
*/
int rc = SQLITE_OK;
unixFile *pFile = (unixFile*)id;
- unixInodeInfo *pInode = pFile->pInode;
+ unixInodeInfo *pInode;
struct flock lock;
- int s = 0;
int tErrno = 0;
assert( pFile );
OSTRACE(("LOCK %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h,
azFileLock(eFileLock), azFileLock(pFile->eFileLock),
- azFileLock(pInode->eFileLock), pInode->nShared , getpid()));
+ azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared , getpid()));
/* If there is already a lock of this type or more restrictive on the
** unixFile, do nothing. Don't use the end_lock: exit path, as
@@ -24149,11 +26397,10 @@
){
lock.l_type = (eFileLock==SHARED_LOCK?F_RDLCK:F_WRLCK);
lock.l_start = PENDING_BYTE;
- s = fcntl(pFile->h, F_SETLK, &lock);
- if( s==(-1) ){
+ if( unixFileLock(pFile, &lock) ){
tErrno = errno;
rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
- if( IS_LOCK_ERROR(rc) ){
+ if( rc!=SQLITE_BUSY ){
pFile->lastErrno = tErrno;
}
goto end_lock;
@@ -24167,33 +26414,31 @@
if( eFileLock==SHARED_LOCK ){
assert( pInode->nShared==0 );
assert( pInode->eFileLock==0 );
+ assert( rc==SQLITE_OK );
/* Now get the read-lock */
lock.l_start = SHARED_FIRST;
lock.l_len = SHARED_SIZE;
- if( (s = fcntl(pFile->h, F_SETLK, &lock))==(-1) ){
+ if( unixFileLock(pFile, &lock) ){
tErrno = errno;
+ rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
}
+
/* Drop the temporary PENDING lock */
lock.l_start = PENDING_BYTE;
lock.l_len = 1L;
lock.l_type = F_UNLCK;
- if( fcntl(pFile->h, F_SETLK, &lock)!=0 ){
- if( s != -1 ){
- /* This could happen with a network mount */
- tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
- if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
- }
- goto end_lock;
- }
+ if( unixFileLock(pFile, &lock) && rc==SQLITE_OK ){
+ /* This could happen with a network mount */
+ tErrno = errno;
+ rc = SQLITE_IOERR_UNLOCK;
}
- if( s==(-1) ){
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
- if( IS_LOCK_ERROR(rc) ){
+
+ if( rc ){
+ if( rc!=SQLITE_BUSY ){
pFile->lastErrno = tErrno;
}
+ goto end_lock;
}else{
pFile->eFileLock = SHARED_LOCK;
pInode->nLock++;
@@ -24210,22 +26455,20 @@
*/
assert( 0!=pFile->eFileLock );
lock.l_type = F_WRLCK;
- switch( eFileLock ){
- case RESERVED_LOCK:
- lock.l_start = RESERVED_BYTE;
- break;
- case EXCLUSIVE_LOCK:
- lock.l_start = SHARED_FIRST;
- lock.l_len = SHARED_SIZE;
- break;
- default:
- assert(0);
+
+ assert( eFileLock==RESERVED_LOCK || eFileLock==EXCLUSIVE_LOCK );
+ if( eFileLock==RESERVED_LOCK ){
+ lock.l_start = RESERVED_BYTE;
+ lock.l_len = 1L;
+ }else{
+ lock.l_start = SHARED_FIRST;
+ lock.l_len = SHARED_SIZE;
}
- s = fcntl(pFile->h, F_SETLK, &lock);
- if( s==(-1) ){
+
+ if( unixFileLock(pFile, &lock) ){
tErrno = errno;
rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
- if( IS_LOCK_ERROR(rc) ){
+ if( rc!=SQLITE_BUSY ){
pFile->lastErrno = tErrno;
}
}
@@ -24290,13 +26533,11 @@
** around a bug in BSD NFS lockd (also seen on MacOSX 10.3+) that fails to
** remove the write lock on a region when a read lock is set.
*/
-static int _posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){
+static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){
unixFile *pFile = (unixFile*)id;
unixInodeInfo *pInode;
struct flock lock;
int rc = SQLITE_OK;
- int h;
- int tErrno; /* Error code from system call errors */
assert( pFile );
OSTRACE(("UNLOCK %d %d was %d(%d,%d) pid=%d (unix)\n", pFile->h, eFileLock,
@@ -24308,14 +26549,10 @@
return SQLITE_OK;
}
unixEnterMutex();
- h = pFile->h;
pInode = pFile->pInode;
assert( pInode->nShared!=0 );
if( pFile->eFileLock>SHARED_LOCK ){
assert( pInode->eFileLock==pFile->eFileLock );
- SimulateIOErrorBenign(1);
- SimulateIOError( h=(-1) )
- SimulateIOErrorBenign(0);
#ifndef NDEBUG
/* When reducing a lock such that other processes can start
@@ -24326,11 +26563,6 @@
** the file has changed and hence might not know to flush their
** cache. The use of a stale cache can lead to database corruption.
*/
-#if 0
- assert( pFile->inNormalWrite==0
- || pFile->dbUpdate==0
- || pFile->transCntrChng==1 );
-#endif
pFile->inNormalWrite = 0;
#endif
@@ -24344,16 +26576,23 @@
** 4: [RRRR.]
*/
if( eFileLock==SHARED_LOCK ){
+
+#if !defined(__APPLE__) || !SQLITE_ENABLE_LOCKING_STYLE
+ (void)handleNFSUnlock;
+ assert( handleNFSUnlock==0 );
+#endif
+#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE
if( handleNFSUnlock ){
+ int tErrno; /* Error code from system call errors */
off_t divSize = SHARED_SIZE - 1;
lock.l_type = F_UNLCK;
lock.l_whence = SEEK_SET;
lock.l_start = SHARED_FIRST;
lock.l_len = divSize;
- if( fcntl(h, F_SETLK, &lock)==(-1) ){
+ if( unixFileLock(pFile, &lock)==(-1) ){
tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
+ rc = SQLITE_IOERR_UNLOCK;
if( IS_LOCK_ERROR(rc) ){
pFile->lastErrno = tErrno;
}
@@ -24363,7 +26602,7 @@
lock.l_whence = SEEK_SET;
lock.l_start = SHARED_FIRST;
lock.l_len = divSize;
- if( fcntl(h, F_SETLK, &lock)==(-1) ){
+ if( unixFileLock(pFile, &lock)==(-1) ){
tErrno = errno;
rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_RDLOCK);
if( IS_LOCK_ERROR(rc) ){
@@ -24375,25 +26614,30 @@
lock.l_whence = SEEK_SET;
lock.l_start = SHARED_FIRST+divSize;
lock.l_len = SHARED_SIZE-divSize;
- if( fcntl(h, F_SETLK, &lock)==(-1) ){
+ if( unixFileLock(pFile, &lock)==(-1) ){
tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
+ rc = SQLITE_IOERR_UNLOCK;
if( IS_LOCK_ERROR(rc) ){
pFile->lastErrno = tErrno;
}
goto end_unlock;
}
- }else{
+ }else
+#endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */
+ {
lock.l_type = F_RDLCK;
lock.l_whence = SEEK_SET;
lock.l_start = SHARED_FIRST;
lock.l_len = SHARED_SIZE;
- if( fcntl(h, F_SETLK, &lock)==(-1) ){
- tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_RDLOCK);
- if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
- }
+ if( unixFileLock(pFile, &lock) ){
+ /* In theory, the call to unixFileLock() cannot fail because another
+ ** process is holding an incompatible lock. If it does, this
+ ** indicates that the other process is not following the locking
+ ** protocol. If this happens, return SQLITE_IOERR_RDLOCK. Returning
+ ** SQLITE_BUSY would confuse the upper layer (in practice it causes
+ ** an assert to fail). */
+ rc = SQLITE_IOERR_RDLOCK;
+ pFile->lastErrno = errno;
goto end_unlock;
}
}
@@ -24402,14 +26646,11 @@
lock.l_whence = SEEK_SET;
lock.l_start = PENDING_BYTE;
lock.l_len = 2L; assert( PENDING_BYTE+1==RESERVED_BYTE );
- if( fcntl(h, F_SETLK, &lock)!=(-1) ){
+ if( unixFileLock(pFile, &lock)==0 ){
pInode->eFileLock = SHARED_LOCK;
}else{
- tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
- if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
- }
+ rc = SQLITE_IOERR_UNLOCK;
+ pFile->lastErrno = errno;
goto end_unlock;
}
}
@@ -24423,17 +26664,11 @@
lock.l_type = F_UNLCK;
lock.l_whence = SEEK_SET;
lock.l_start = lock.l_len = 0L;
- SimulateIOErrorBenign(1);
- SimulateIOError( h=(-1) )
- SimulateIOErrorBenign(0);
- if( fcntl(h, F_SETLK, &lock)!=(-1) ){
+ if( unixFileLock(pFile, &lock)==0 ){
pInode->eFileLock = NO_LOCK;
}else{
- tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
- if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
- }
+ rc = SQLITE_IOERR_UNLOCK;
+ pFile->lastErrno = errno;
pInode->eFileLock = NO_LOCK;
pFile->eFileLock = NO_LOCK;
}
@@ -24446,10 +26681,7 @@
pInode->nLock--;
assert( pInode->nLock>=0 );
if( pInode->nLock==0 ){
- int rc2 = closePendingFds(pFile);
- if( rc==SQLITE_OK ){
- rc = rc2;
- }
+ closePendingFds(pFile);
}
}
@@ -24467,7 +26699,7 @@
** the requested locking level, this routine is a no-op.
*/
static int unixUnlock(sqlite3_file *id, int eFileLock){
- return _posixUnlock(id, eFileLock, 0);
+ return posixUnlock(id, eFileLock, 0);
}
/*
@@ -24482,37 +26714,23 @@
*/
static int closeUnixFile(sqlite3_file *id){
unixFile *pFile = (unixFile*)id;
- if( pFile ){
- if( pFile->dirfd>=0 ){
- int err = close(pFile->dirfd);
- if( err ){
- pFile->lastErrno = errno;
- return unixLogError(SQLITE_IOERR_DIR_CLOSE, "close", pFile->zPath);
- }else{
- pFile->dirfd=-1;
- }
- }
- if( pFile->h>=0 ){
- int err = close(pFile->h);
- if( err ){
- pFile->lastErrno = errno;
- return unixLogError(SQLITE_IOERR_CLOSE, "close", pFile->zPath);
- }
- }
-#if OS_VXWORKS
- if( pFile->pId ){
- if( pFile->isDelete ){
- unlink(pFile->pId->zCanonicalName);
- }
- vxworksReleaseFileId(pFile->pId);
- pFile->pId = 0;
- }
-#endif
- OSTRACE(("CLOSE %-3d\n", pFile->h));
- OpenCounter(-1);
- sqlite3_free(pFile->pUnused);
- memset(pFile, 0, sizeof(unixFile));
+ if( pFile->h>=0 ){
+ robust_close(pFile, pFile->h, __LINE__);
+ pFile->h = -1;
}
+#if OS_VXWORKS
+ if( pFile->pId ){
+ if( pFile->ctrlFlags & UNIXFILE_DELETE ){
+ osUnlink(pFile->pId->zCanonicalName);
+ }
+ vxworksReleaseFileId(pFile->pId);
+ pFile->pId = 0;
+ }
+#endif
+ OSTRACE(("CLOSE %-3d\n", pFile->h));
+ OpenCounter(-1);
+ sqlite3_free(pFile->pUnused);
+ memset(pFile, 0, sizeof(unixFile));
return SQLITE_OK;
}
@@ -24521,22 +26739,25 @@
*/
static int unixClose(sqlite3_file *id){
int rc = SQLITE_OK;
- if( id ){
- unixFile *pFile = (unixFile *)id;
- unixUnlock(id, NO_LOCK);
- unixEnterMutex();
- if( pFile->pInode && pFile->pInode->nLock ){
- /* If there are outstanding locks, do not actually close the file just
- ** yet because that would clear those locks. Instead, add the file
- ** descriptor to pInode->pUnused list. It will be automatically closed
- ** when the last lock is cleared.
- */
- setPendingFd(pFile);
- }
- releaseInodeInfo(pFile);
- rc = closeUnixFile(id);
- unixLeaveMutex();
+ unixFile *pFile = (unixFile *)id;
+ unixUnlock(id, NO_LOCK);
+ unixEnterMutex();
+
+ /* unixFile.pInode is always valid here. Otherwise, a different close
+ ** routine (e.g. nolockClose()) would be called instead.
+ */
+ assert( pFile->pInode->nLock>0 || pFile->pInode->bProcessLock==0 );
+ if( ALWAYS(pFile->pInode) && pFile->pInode->nLock ){
+ /* If there are outstanding locks, do not actually close the file just
+ ** yet because that would clear those locks. Instead, add the file
+ ** descriptor to pInode->pUnused list. It will be automatically closed
+ ** when the last lock is cleared.
+ */
+ setPendingFd(pFile);
}
+ releaseInodeInfo(pFile);
+ rc = closeUnixFile(id);
+ unixLeaveMutex();
return rc;
}
@@ -24588,8 +26809,8 @@
************************* Begin dot-file Locking ******************************
**
** The dotfile locking implementation uses the existance of separate lock
-** files in order to control access to the database. This works on just
-** about every filesystem imaginable. But there are serious downsides:
+** files (really a directory) to control access to the database. This works
+** on just about every filesystem imaginable. But there are serious downsides:
**
** (1) There is zero concurrency. A single reader blocks all other
** connections from reading or writing the database.
@@ -24600,15 +26821,15 @@
** Nevertheless, a dotlock is an appropriate locking mode for use if no
** other locking strategy is available.
**
-** Dotfile locking works by creating a file in the same directory as the
-** database and with the same name but with a ".lock" extension added.
-** The existance of a lock file implies an EXCLUSIVE lock. All other lock
-** types (SHARED, RESERVED, PENDING) are mapped into EXCLUSIVE.
+** Dotfile locking works by creating a subdirectory in the same directory as
+** the database and with the same name but with a ".lock" extension added.
+** The existance of a lock directory implies an EXCLUSIVE lock. All other
+** lock types (SHARED, RESERVED, PENDING) are mapped into EXCLUSIVE.
*/
/*
** The file suffix added to the data base filename in order to create the
-** lock file.
+** lock directory.
*/
#define DOTLOCK_SUFFIX ".lock"
@@ -24639,7 +26860,7 @@
}else{
/* The lock is held if and only if the lockfile exists */
const char *zLockFile = (const char*)pFile->lockingContext;
- reserved = access(zLockFile, 0)==0;
+ reserved = osAccess(zLockFile, 0)==0;
}
OSTRACE(("TEST WR-LOCK %d %d %d (dotlock)\n", pFile->h, rc, reserved));
*pResOut = reserved;
@@ -24675,7 +26896,6 @@
*/
static int dotlockLock(sqlite3_file *id, int eFileLock) {
unixFile *pFile = (unixFile*)id;
- int fd;
char *zLockFile = (char *)pFile->lockingContext;
int rc = SQLITE_OK;
@@ -24685,17 +26905,19 @@
*/
if( pFile->eFileLock > NO_LOCK ){
pFile->eFileLock = eFileLock;
-#if !OS_VXWORKS
/* Always update the timestamp on the old file */
+#ifdef HAVE_UTIME
+ utime(zLockFile, NULL);
+#else
utimes(zLockFile, NULL);
#endif
return SQLITE_OK;
}
/* grab an exclusive lock */
- fd = open(zLockFile,O_RDONLY|O_CREAT|O_EXCL,0600);
- if( fd<0 ){
- /* failed to open/create the file, someone else may have stolen the lock */
+ rc = osMkdir(zLockFile, 0777);
+ if( rc<0 ){
+ /* failed to open/create the lock directory */
int tErrno = errno;
if( EEXIST == tErrno ){
rc = SQLITE_BUSY;
@@ -24707,10 +26929,6 @@
}
return rc;
}
- if( close(fd) ){
- pFile->lastErrno = errno;
- rc = SQLITE_IOERR_CLOSE;
- }
/* got it, set the type and return ok */
pFile->eFileLock = eFileLock;
@@ -24729,6 +26947,7 @@
static int dotlockUnlock(sqlite3_file *id, int eFileLock) {
unixFile *pFile = (unixFile*)id;
char *zLockFile = (char *)pFile->lockingContext;
+ int rc;
assert( pFile );
OSTRACE(("UNLOCK %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock,
@@ -24750,11 +26969,13 @@
/* To fully unlock the database, delete the lock file */
assert( eFileLock==NO_LOCK );
- if( unlink(zLockFile) ){
- int rc = 0;
+ rc = osRmdir(zLockFile);
+ if( rc<0 && errno==ENOTDIR ) rc = osUnlink(zLockFile);
+ if( rc<0 ){
int tErrno = errno;
+ rc = 0;
if( ENOENT != tErrno ){
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
+ rc = SQLITE_IOERR_UNLOCK;
}
if( IS_LOCK_ERROR(rc) ){
pFile->lastErrno = tErrno;
@@ -24842,7 +27063,7 @@
if ( lrc ) {
int tErrno = errno;
/* unlock failed with an error */
- lrc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
+ lrc = SQLITE_IOERR_UNLOCK;
if( IS_LOCK_ERROR(lrc) ){
pFile->lastErrno = tErrno;
rc = lrc;
@@ -24964,21 +27185,12 @@
}
/* no, really, unlock. */
- int rc = robust_flock(pFile->h, LOCK_UN);
- if (rc) {
- int r, tErrno = errno;
- r = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
- if( IS_LOCK_ERROR(r) ){
- pFile->lastErrno = tErrno;
- }
+ if( robust_flock(pFile->h, LOCK_UN) ){
#ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS
- if( (r & SQLITE_IOERR) == SQLITE_IOERR ){
- r = SQLITE_BUSY;
- }
+ return SQLITE_OK;
#endif /* SQLITE_IGNORE_FLOCK_LOCK_ERRORS */
-
- return r;
- } else {
+ return SQLITE_IOERR_UNLOCK;
+ }else{
pFile->eFileLock = NO_LOCK;
return SQLITE_OK;
}
@@ -25265,11 +27477,12 @@
int rc = SQLITE_OK;
int reserved = 0;
unixFile *pFile = (unixFile*)id;
+ afpLockingContext *context;
SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; );
assert( pFile );
- afpLockingContext *context = (afpLockingContext *) pFile->lockingContext;
+ context = (afpLockingContext *) pFile->lockingContext;
if( context->reserved ){
*pResOut = 1;
return SQLITE_OK;
@@ -25409,7 +27622,7 @@
** operating system calls for the specified lock.
*/
if( eFileLock==SHARED_LOCK ){
- int lrc1, lrc2, lrc1Errno;
+ int lrc1, lrc2, lrc1Errno = 0;
long lk, mask;
assert( pInode->nShared==0 );
@@ -25602,7 +27815,7 @@
pInode->nLock--;
assert( pInode->nLock>=0 );
if( pInode->nLock==0 ){
- rc = closePendingFds(pFile);
+ closePendingFds(pFile);
}
}
}
@@ -25659,7 +27872,7 @@
** the requested locking level, this routine is a no-op.
*/
static int nfsUnlock(sqlite3_file *id, int eFileLock){
- return _posixUnlock(id, eFileLock, 1);
+ return posixUnlock(id, eFileLock, 1);
}
#endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */
@@ -25696,35 +27909,48 @@
*/
static int seekAndRead(unixFile *id, sqlite3_int64 offset, void *pBuf, int cnt){
int got;
+ int prior = 0;
#if (!defined(USE_PREAD) && !defined(USE_PREAD64))
i64 newOffset;
#endif
TIMER_START;
+ do{
#if defined(USE_PREAD)
- do{ got = pread(id->h, pBuf, cnt, offset); }while( got<0 && errno==EINTR );
- SimulateIOError( got = -1 );
+ got = osPread(id->h, pBuf, cnt, offset);
+ SimulateIOError( got = -1 );
#elif defined(USE_PREAD64)
- do{ got = pread64(id->h, pBuf, cnt, offset); }while( got<0 && errno==EINTR );
- SimulateIOError( got = -1 );
+ got = osPread64(id->h, pBuf, cnt, offset);
+ SimulateIOError( got = -1 );
#else
- newOffset = lseek(id->h, offset, SEEK_SET);
- SimulateIOError( newOffset-- );
- if( newOffset!=offset ){
- if( newOffset == -1 ){
- ((unixFile*)id)->lastErrno = errno;
- }else{
- ((unixFile*)id)->lastErrno = 0;
+ newOffset = lseek(id->h, offset, SEEK_SET);
+ SimulateIOError( newOffset-- );
+ if( newOffset!=offset ){
+ if( newOffset == -1 ){
+ ((unixFile*)id)->lastErrno = errno;
+ }else{
+ ((unixFile*)id)->lastErrno = 0;
+ }
+ return -1;
}
- return -1;
- }
- do{ got = read(id->h, pBuf, cnt); }while( got<0 && errno==EINTR );
+ got = osRead(id->h, pBuf, cnt);
#endif
+ if( got==cnt ) break;
+ if( got<0 ){
+ if( errno==EINTR ){ got = 1; continue; }
+ prior = 0;
+ ((unixFile*)id)->lastErrno = errno;
+ break;
+ }else if( got>0 ){
+ cnt -= got;
+ offset += got;
+ prior += got;
+ pBuf = (void*)(got + (char*)pBuf);
+ }
+ }while( got>0 );
TIMER_END;
- if( got<0 ){
- ((unixFile*)id)->lastErrno = errno;
- }
- OSTRACE(("READ %-3d %5d %7lld %llu\n", id->h, got, offset, TIMER_ELAPSED));
- return got;
+ OSTRACE(("READ %-3d %5d %7lld %llu\n",
+ id->h, got+prior, offset-prior, TIMER_ELAPSED));
+ return got+prior;
}
/*
@@ -25779,20 +28005,23 @@
#endif
TIMER_START;
#if defined(USE_PREAD)
- do{ got = pwrite(id->h, pBuf, cnt, offset); }while( got<0 && errno==EINTR );
+ do{ got = osPwrite(id->h, pBuf, cnt, offset); }while( got<0 && errno==EINTR );
#elif defined(USE_PREAD64)
- do{ got = pwrite64(id->h, pBuf, cnt, offset); }while( got<0 && errno==EINTR );
+ do{ got = osPwrite64(id->h, pBuf, cnt, offset);}while( got<0 && errno==EINTR);
#else
- newOffset = lseek(id->h, offset, SEEK_SET);
- if( newOffset!=offset ){
- if( newOffset == -1 ){
- ((unixFile*)id)->lastErrno = errno;
- }else{
- ((unixFile*)id)->lastErrno = 0;
+ do{
+ newOffset = lseek(id->h, offset, SEEK_SET);
+ SimulateIOError( newOffset-- );
+ if( newOffset!=offset ){
+ if( newOffset == -1 ){
+ ((unixFile*)id)->lastErrno = errno;
+ }else{
+ ((unixFile*)id)->lastErrno = 0;
+ }
+ return -1;
}
- return -1;
- }
- do{ got = write(id->h, pBuf, cnt); }while( got<0 && errno==EINTR );
+ got = osWrite(id->h, pBuf, cnt);
+ }while( got<0 && errno==EINTR );
#endif
TIMER_END;
if( got<0 ){
@@ -25859,7 +28088,7 @@
SimulateDiskfullError(( wrote=0, amt=1 ));
if( amt>0 ){
- if( wrote<0 ){
+ if( wrote<0 && pFile->lastErrno!=ENOSPC ){
/* lastErrno set by seekAndWrite */
return SQLITE_IOERR_WRITE;
}else{
@@ -25882,11 +28111,11 @@
/*
** We do not trust systems to provide a working fdatasync(). Some do.
-** Others do no. To be safe, we will stick with the (slower) fsync().
-** If you know that your system does support fdatasync() correctly,
+** Others do no. To be safe, we will stick with the (slightly slower)
+** fsync(). If you know that your system does support fdatasync() correctly,
** then simply compile with -Dfdatasync=fdatasync
*/
-#if !defined(fdatasync) && !defined(__linux__)
+#if !defined(fdatasync)
# define fdatasync fsync
#endif
@@ -25960,7 +28189,7 @@
rc = SQLITE_OK;
#elif HAVE_FULLFSYNC
if( fullSync ){
- rc = fcntl(fd, F_FULLFSYNC, 0);
+ rc = osFcntl(fd, F_FULLFSYNC, 0);
}else{
rc = 1;
}
@@ -25995,6 +28224,50 @@
}
/*
+** Open a file descriptor to the directory containing file zFilename.
+** If successful, *pFd is set to the opened file descriptor and
+** SQLITE_OK is returned. If an error occurs, either SQLITE_NOMEM
+** or SQLITE_CANTOPEN is returned and *pFd is set to an undefined
+** value.
+**
+** The directory file descriptor is used for only one thing - to
+** fsync() a directory to make sure file creation and deletion events
+** are flushed to disk. Such fsyncs are not needed on newer
+** journaling filesystems, but are required on older filesystems.
+**
+** This routine can be overridden using the xSetSysCall interface.
+** The ability to override this routine was added in support of the
+** chromium sandbox. Opening a directory is a security risk (we are
+** told) so making it overrideable allows the chromium sandbox to
+** replace this routine with a harmless no-op. To make this routine
+** a no-op, replace it with a stub that returns SQLITE_OK but leaves
+** *pFd set to a negative number.
+**
+** If SQLITE_OK is returned, the caller is responsible for closing
+** the file descriptor *pFd using close().
+*/
+static int openDirectory(const char *zFilename, int *pFd){
+ int ii;
+ int fd = -1;
+ char zDirname[MAX_PATHNAME+1];
+
+ sqlite3_snprintf(MAX_PATHNAME, zDirname, "%s", zFilename);
+ for(ii=(int)strlen(zDirname); ii>1 && zDirname[ii]!='/'; ii--);
+ if( ii>0 ){
+ zDirname[ii] = '\0';
+ fd = robust_open(zDirname, O_RDONLY|O_BINARY, 0);
+ if( fd>=0 ){
+#ifdef FD_CLOEXEC
+ osFcntl(fd, F_SETFD, osFcntl(fd, F_GETFD, 0) | FD_CLOEXEC);
+#endif
+ OSTRACE(("OPENDIR %-3d %s\n", fd, zDirname));
+ }
+ }
+ *pFd = fd;
+ return (fd>=0?SQLITE_OK:unixLogError(SQLITE_CANTOPEN_BKPT, "open", zDirname));
+}
+
+/*
** Make sure all writes to a particular file are committed to disk.
**
** If dataOnly==0 then both the file itself and its metadata (file
@@ -26034,33 +28307,23 @@
pFile->lastErrno = errno;
return unixLogError(SQLITE_IOERR_FSYNC, "full_fsync", pFile->zPath);
}
- if( pFile->dirfd>=0 ){
- int err;
- OSTRACE(("DIRSYNC %-3d (have_fullfsync=%d fullsync=%d)\n", pFile->dirfd,
+
+ /* Also fsync the directory containing the file if the DIRSYNC flag
+ ** is set. This is a one-time occurrance. Many systems (examples: AIX)
+ ** are unable to fsync a directory, so ignore errors on the fsync.
+ */
+ if( pFile->ctrlFlags & UNIXFILE_DIRSYNC ){
+ int dirfd;
+ OSTRACE(("DIRSYNC %s (have_fullfsync=%d fullsync=%d)\n", pFile->zPath,
HAVE_FULLFSYNC, isFullsync));
-#ifndef SQLITE_DISABLE_DIRSYNC
- /* The directory sync is only attempted if full_fsync is
- ** turned off or unavailable. If a full_fsync occurred above,
- ** then the directory sync is superfluous.
- */
- if( (!HAVE_FULLFSYNC || !isFullsync) && full_fsync(pFile->dirfd,0,0) ){
- /*
- ** We have received multiple reports of fsync() returning
- ** errors when applied to directories on certain file systems.
- ** A failed directory sync is not a big deal. So it seems
- ** better to ignore the error. Ticket #1657
- */
- /* pFile->lastErrno = errno; */
- /* return SQLITE_IOERR; */
+ rc = osOpenDirectory(pFile->zPath, &dirfd);
+ if( rc==SQLITE_OK && dirfd>=0 ){
+ full_fsync(dirfd, 0, 0);
+ robust_close(pFile, dirfd, __LINE__);
+ }else if( rc==SQLITE_CANTOPEN ){
+ rc = SQLITE_OK;
}
-#endif
- err = close(pFile->dirfd); /* Only need to sync once, so close the */
- if( err==0 ){ /* directory when we are done */
- pFile->dirfd = -1;
- }else{
- pFile->lastErrno = errno;
- rc = unixLogError(SQLITE_IOERR_DIR_CLOSE, "close", pFile->zPath);
- }
+ pFile->ctrlFlags &= ~UNIXFILE_DIRSYNC;
}
return rc;
}
@@ -26112,7 +28375,7 @@
int rc;
struct stat buf;
assert( id );
- rc = fstat(((unixFile*)id)->h, &buf);
+ rc = osFstat(((unixFile*)id)->h, &buf);
SimulateIOError( rc=1 );
if( rc!=0 ){
((unixFile*)id)->lastErrno = errno;
@@ -26142,27 +28405,29 @@
/*
** This function is called to handle the SQLITE_FCNTL_SIZE_HINT
-** file-control operation.
-**
-** If the user has configured a chunk-size for this file, it could be
-** that the file needs to be extended at this point. Otherwise, the
-** SQLITE_FCNTL_SIZE_HINT operation is a no-op for Unix.
+** file-control operation. Enlarge the database to nBytes in size
+** (rounded up to the next chunk-size). If the database is already
+** nBytes or larger, this routine is a no-op.
*/
static int fcntlSizeHint(unixFile *pFile, i64 nByte){
- if( pFile->szChunk ){
+ if( pFile->szChunk>0 ){
i64 nSize; /* Required file size */
struct stat buf; /* Used to hold return values of fstat() */
- if( fstat(pFile->h, &buf) ) return SQLITE_IOERR_FSTAT;
+ if( osFstat(pFile->h, &buf) ) return SQLITE_IOERR_FSTAT;
nSize = ((nByte+pFile->szChunk-1) / pFile->szChunk) * pFile->szChunk;
if( nSize>(i64)buf.st_size ){
+
#if defined(HAVE_POSIX_FALLOCATE) && HAVE_POSIX_FALLOCATE
- int rc;
+ /* The code below is handling the return value of osFallocate()
+ ** correctly. posix_fallocate() is defined to "returns zero on success,
+ ** or an error number on failure". See the manpage for details. */
+ int err;
do{
- rc = posix_fallocate(pFile-.h, buf.st_size, nSize-buf.st_size;
- }while( rc<0 && errno=EINTR );
- if( rc ) return SQLITE_IOERR_WRITE;
+ err = osFallocate(pFile->h, buf.st_size, nSize-buf.st_size);
+ }while( err==EINTR );
+ if( err ) return SQLITE_IOERR_WRITE;
#else
/* If the OS does not have posix_fallocate(), fake it. First use
** ftruncate() to set the file size, then write a single byte to
@@ -26172,18 +28437,17 @@
*/
int nBlk = buf.st_blksize; /* File-system block size */
i64 iWrite; /* Next offset to write to */
- int nWrite; /* Return value from seekAndWrite() */
if( robust_ftruncate(pFile->h, nSize) ){
pFile->lastErrno = errno;
return unixLogError(SQLITE_IOERR_TRUNCATE, "ftruncate", pFile->zPath);
}
iWrite = ((buf.st_size + 2*nBlk - 1)/nBlk)*nBlk-1;
- do {
- nWrite = seekAndWrite(pFile, iWrite, "", 1);
+ while( iWrite<nSize ){
+ int nWrite = seekAndWrite(pFile, iWrite, "", 1);
+ if( nWrite!=1 ) return SQLITE_IOERR_WRITE;
iWrite += nBlk;
- } while( nWrite==1 && iWrite<nSize );
- if( nWrite!=1 ) return SQLITE_IOERR_WRITE;
+ }
#endif
}
}
@@ -26192,24 +28456,57 @@
}
/*
+** If *pArg is inititially negative then this is a query. Set *pArg to
+** 1 or 0 depending on whether or not bit mask of pFile->ctrlFlags is set.
+**
+** If *pArg is 0 or 1, then clear or set the mask bit of pFile->ctrlFlags.
+*/
+static void unixModeBit(unixFile *pFile, unsigned char mask, int *pArg){
+ if( *pArg<0 ){
+ *pArg = (pFile->ctrlFlags & mask)!=0;
+ }else if( (*pArg)==0 ){
+ pFile->ctrlFlags &= ~mask;
+ }else{
+ pFile->ctrlFlags |= mask;
+ }
+}
+
+/*
** Information and control of an open file handle.
*/
static int unixFileControl(sqlite3_file *id, int op, void *pArg){
+ unixFile *pFile = (unixFile*)id;
switch( op ){
case SQLITE_FCNTL_LOCKSTATE: {
- *(int*)pArg = ((unixFile*)id)->eFileLock;
+ *(int*)pArg = pFile->eFileLock;
return SQLITE_OK;
}
case SQLITE_LAST_ERRNO: {
- *(int*)pArg = ((unixFile*)id)->lastErrno;
+ *(int*)pArg = pFile->lastErrno;
return SQLITE_OK;
}
case SQLITE_FCNTL_CHUNK_SIZE: {
- ((unixFile*)id)->szChunk = *(int *)pArg;
+ pFile->szChunk = *(int *)pArg;
return SQLITE_OK;
}
case SQLITE_FCNTL_SIZE_HINT: {
- return fcntlSizeHint((unixFile *)id, *(i64 *)pArg);
+ int rc;
+ SimulateIOErrorBenign(1);
+ rc = fcntlSizeHint(pFile, *(i64 *)pArg);
+ SimulateIOErrorBenign(0);
+ return rc;
+ }
+ case SQLITE_FCNTL_PERSIST_WAL: {
+ unixModeBit(pFile, UNIXFILE_PERSIST_WAL, (int*)pArg);
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_POWERSAFE_OVERWRITE: {
+ unixModeBit(pFile, UNIXFILE_PSOW, (int*)pArg);
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_VFSNAME: {
+ *(char**)pArg = sqlite3_mprintf("%s", pFile->pVfs->zName);
+ return SQLITE_OK;
}
#ifndef NDEBUG
/* The pager calls this method to signal that it has done
@@ -26229,7 +28526,7 @@
}
#endif /* SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) */
}
- return SQLITE_ERROR;
+ return SQLITE_NOTFOUND;
}
/*
@@ -26242,17 +28539,31 @@
** a database and its journal file) that the sector size will be the
** same for both.
*/
-static int unixSectorSize(sqlite3_file *NotUsed){
- UNUSED_PARAMETER(NotUsed);
+static int unixSectorSize(sqlite3_file *pFile){
+ (void)pFile;
return SQLITE_DEFAULT_SECTOR_SIZE;
}
/*
-** Return the device characteristics for the file. This is always 0 for unix.
+** Return the device characteristics for the file.
+**
+** This VFS is set up to return SQLITE_IOCAP_POWERSAFE_OVERWRITE by default.
+** However, that choice is contraversial since technically the underlying
+** file system does not always provide powersafe overwrites. (In other
+** words, after a power-loss event, parts of the file that were never
+** written might end up being altered.) However, non-PSOW behavior is very,
+** very rare. And asserting PSOW makes a large reduction in the amount
+** of required I/O for journaling, since a lot of padding is eliminated.
+** Hence, while POWERSAFE_OVERWRITE is on by default, there is a file-control
+** available to turn it off and URI query parameter available to turn it off.
*/
-static int unixDeviceCharacteristics(sqlite3_file *NotUsed){
- UNUSED_PARAMETER(NotUsed);
- return 0;
+static int unixDeviceCharacteristics(sqlite3_file *id){
+ unixFile *p = (unixFile*)id;
+ if( p->ctrlFlags & UNIXFILE_PSOW ){
+ return SQLITE_IOCAP_POWERSAFE_OVERWRITE;
+ }else{
+ return 0;
+ }
}
#ifndef SQLITE_OMIT_WAL
@@ -26293,7 +28604,8 @@
char *zFilename; /* Name of the mmapped file */
int h; /* Open file descriptor */
int szRegion; /* Size of shared-memory regions */
- int nRegion; /* Size of array apRegion */
+ u16 nRegion; /* Size of array apRegion */
+ u8 isReadonly; /* True if read-only */
char **apRegion; /* Array of mapped shared-memory regions */
int nRef; /* Number of unixShm objects pointing to this */
unixShm *pFirst; /* All unixShm objects pointing to this */
@@ -26321,11 +28633,9 @@
unixShmNode *pShmNode; /* The underlying unixShmNode object */
unixShm *pNext; /* Next unixShm with the same unixShmNode */
u8 hasMutex; /* True if holding the unixShmNode mutex */
+ u8 id; /* Id of this connection within its unixShmNode */
u16 sharedMask; /* Mask of shared locks held */
u16 exclMask; /* Mask of exclusive locks held */
-#ifdef SQLITE_DEBUG
- u8 id; /* Id of this connection within its unixShmNode */
-#endif
};
/*
@@ -26358,15 +28668,17 @@
/* Locks are within range */
assert( n>=1 && n<SQLITE_SHM_NLOCK );
- /* Initialize the locking parameters */
- memset(&f, 0, sizeof(f));
- f.l_type = lockType;
- f.l_whence = SEEK_SET;
- f.l_start = ofst;
- f.l_len = n;
+ if( pShmNode->h>=0 ){
+ /* Initialize the locking parameters */
+ memset(&f, 0, sizeof(f));
+ f.l_type = lockType;
+ f.l_whence = SEEK_SET;
+ f.l_start = ofst;
+ f.l_len = n;
- rc = fcntl(pShmNode->h, F_SETLK, &f);
- rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY;
+ rc = osFcntl(pShmNode->h, F_SETLK, &f);
+ rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY;
+ }
/* Update the global lock state and do debug tracing */
#ifdef SQLITE_DEBUG
@@ -26419,12 +28731,19 @@
if( p && p->nRef==0 ){
int i;
assert( p->pInode==pFd->pInode );
- if( p->mutex ) sqlite3_mutex_free(p->mutex);
+ sqlite3_mutex_free(p->mutex);
for(i=0; i<p->nRegion; i++){
- munmap(p->apRegion[i], p->szRegion);
+ if( p->h>=0 ){
+ munmap(p->apRegion[i], p->szRegion);
+ }else{
+ sqlite3_free(p->apRegion[i]);
+ }
}
sqlite3_free(p->apRegion);
- if( p->h>=0 ) close(p->h);
+ if( p->h>=0 ){
+ robust_close(pFd, p->h, __LINE__);
+ p->h = -1;
+ }
p->pInode->pShmNode = 0;
sqlite3_free(p);
}
@@ -26458,6 +28777,12 @@
** When opening a new shared-memory file, if no other instances of that
** file are currently open, in this process or in other processes, then
** the file must be truncated to zero length or have its header cleared.
+**
+** If the original database file (pDbFd) is using the "unix-excl" VFS
+** that means that an exclusive lock is held on the database file and
+** that no other processes are able to read or write the database. In
+** that case, we do not really need shared memory. No shared memory
+** file is created. The shared memory will be simulated with heap memory.
*/
static int unixOpenSharedMemory(unixFile *pDbFd){
struct unixShm *p = 0; /* The connection to be opened */
@@ -26487,22 +28812,22 @@
** with the same permissions. The actual permissions the file is created
** with are subject to the current umask setting.
*/
- if( fstat(pDbFd->h, &sStat) ){
+ if( osFstat(pDbFd->h, &sStat) && pInode->bProcessLock==0 ){
rc = SQLITE_IOERR_FSTAT;
goto shm_open_err;
}
#ifdef SQLITE_SHM_DIRECTORY
- nShmFilename = sizeof(SQLITE_SHM_DIRECTORY) + 30;
+ nShmFilename = sizeof(SQLITE_SHM_DIRECTORY) + 31;
#else
- nShmFilename = 5 + (int)strlen(pDbFd->zPath);
+ nShmFilename = 6 + (int)strlen(pDbFd->zPath);
#endif
pShmNode = sqlite3_malloc( sizeof(*pShmNode) + nShmFilename );
if( pShmNode==0 ){
rc = SQLITE_NOMEM;
goto shm_open_err;
}
- memset(pShmNode, 0, sizeof(*pShmNode));
+ memset(pShmNode, 0, sizeof(*pShmNode)+nShmFilename);
zShmFilename = pShmNode->zFilename = (char*)&pShmNode[1];
#ifdef SQLITE_SHM_DIRECTORY
sqlite3_snprintf(nShmFilename, zShmFilename,
@@ -26510,6 +28835,7 @@
(u32)sStat.st_ino, (u32)sStat.st_dev);
#else
sqlite3_snprintf(nShmFilename, zShmFilename, "%s-shm", pDbFd->zPath);
+ sqlite3FileSuffix3(pDbFd->zPath, zShmFilename);
#endif
pShmNode->h = -1;
pDbFd->pInode->pShmNode = pShmNode;
@@ -26520,25 +28846,34 @@
goto shm_open_err;
}
- pShmNode->h = open(zShmFilename, O_RDWR|O_CREAT, (sStat.st_mode & 0777));
- if( pShmNode->h<0 ){
- rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zShmFilename);
- goto shm_open_err;
- }
-
- /* Check to see if another process is holding the dead-man switch.
- ** If not, truncate the file to zero length.
- */
- rc = SQLITE_OK;
- if( unixShmSystemLock(pShmNode, F_WRLCK, UNIX_SHM_DMS, 1)==SQLITE_OK ){
- if( robust_ftruncate(pShmNode->h, 0) ){
- rc = unixLogError(SQLITE_IOERR_SHMOPEN, "ftruncate", zShmFilename);
+ if( pInode->bProcessLock==0 ){
+ int openFlags = O_RDWR | O_CREAT;
+ if( sqlite3_uri_boolean(pDbFd->zPath, "readonly_shm", 0) ){
+ openFlags = O_RDONLY;
+ pShmNode->isReadonly = 1;
}
+ pShmNode->h = robust_open(zShmFilename, openFlags, (sStat.st_mode&0777));
+ if( pShmNode->h<0 ){
+ if( pShmNode->h<0 ){
+ rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zShmFilename);
+ goto shm_open_err;
+ }
+ }
+
+ /* Check to see if another process is holding the dead-man switch.
+ ** If not, truncate the file to zero length.
+ */
+ rc = SQLITE_OK;
+ if( unixShmSystemLock(pShmNode, F_WRLCK, UNIX_SHM_DMS, 1)==SQLITE_OK ){
+ if( robust_ftruncate(pShmNode->h, 0) ){
+ rc = unixLogError(SQLITE_IOERR_SHMOPEN, "ftruncate", zShmFilename);
+ }
+ }
+ if( rc==SQLITE_OK ){
+ rc = unixShmSystemLock(pShmNode, F_RDLCK, UNIX_SHM_DMS, 1);
+ }
+ if( rc ) goto shm_open_err;
}
- if( rc==SQLITE_OK ){
- rc = unixShmSystemLock(pShmNode, F_RDLCK, UNIX_SHM_DMS, 1);
- }
- if( rc ) goto shm_open_err;
}
/* Make the new connection a child of the unixShmNode */
@@ -26612,6 +28947,9 @@
pShmNode = p->pShmNode;
sqlite3_mutex_enter(pShmNode->mutex);
assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 );
+ assert( pShmNode->pInode==pDbFd->pInode );
+ assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 );
+ assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 );
if( pShmNode->nRegion<=iRegion ){
char **apNew; /* New apRegion[] array */
@@ -26620,27 +28958,30 @@
pShmNode->szRegion = szRegion;
- /* The requested region is not mapped into this processes address space.
- ** Check to see if it has been allocated (i.e. if the wal-index file is
- ** large enough to contain the requested region).
- */
- if( fstat(pShmNode->h, &sStat) ){
- rc = SQLITE_IOERR_SHMSIZE;
- goto shmpage_out;
- }
-
- if( sStat.st_size<nByte ){
- /* The requested memory region does not exist. If bExtend is set to
- ** false, exit early. *pp will be set to NULL and SQLITE_OK returned.
- **
- ** Alternatively, if bExtend is true, use ftruncate() to allocate
- ** the requested memory region.
+ if( pShmNode->h>=0 ){
+ /* The requested region is not mapped into this processes address space.
+ ** Check to see if it has been allocated (i.e. if the wal-index file is
+ ** large enough to contain the requested region).
*/
- if( !bExtend ) goto shmpage_out;
- if( robust_ftruncate(pShmNode->h, nByte) ){
- rc = unixLogError(SQLITE_IOERR_SHMSIZE,"ftruncate",pShmNode->zFilename);
+ if( osFstat(pShmNode->h, &sStat) ){
+ rc = SQLITE_IOERR_SHMSIZE;
goto shmpage_out;
}
+
+ if( sStat.st_size<nByte ){
+ /* The requested memory region does not exist. If bExtend is set to
+ ** false, exit early. *pp will be set to NULL and SQLITE_OK returned.
+ **
+ ** Alternatively, if bExtend is true, use ftruncate() to allocate
+ ** the requested memory region.
+ */
+ if( !bExtend ) goto shmpage_out;
+ if( robust_ftruncate(pShmNode->h, nByte) ){
+ rc = unixLogError(SQLITE_IOERR_SHMSIZE, "ftruncate",
+ pShmNode->zFilename);
+ goto shmpage_out;
+ }
+ }
}
/* Map the requested memory region into this processes address space. */
@@ -26653,12 +28994,23 @@
}
pShmNode->apRegion = apNew;
while(pShmNode->nRegion<=iRegion){
- void *pMem = mmap(0, szRegion, PROT_READ|PROT_WRITE,
- MAP_SHARED, pShmNode->h, pShmNode->nRegion*szRegion
- );
- if( pMem==MAP_FAILED ){
- rc = SQLITE_IOERR;
- goto shmpage_out;
+ void *pMem;
+ if( pShmNode->h>=0 ){
+ pMem = mmap(0, szRegion,
+ pShmNode->isReadonly ? PROT_READ : PROT_READ|PROT_WRITE,
+ MAP_SHARED, pShmNode->h, pShmNode->nRegion*szRegion
+ );
+ if( pMem==MAP_FAILED ){
+ rc = unixLogError(SQLITE_IOERR_SHMMAP, "mmap", pShmNode->zFilename);
+ goto shmpage_out;
+ }
+ }else{
+ pMem = sqlite3_malloc(szRegion);
+ if( pMem==0 ){
+ rc = SQLITE_NOMEM;
+ goto shmpage_out;
+ }
+ memset(pMem, 0, szRegion);
}
pShmNode->apRegion[pShmNode->nRegion] = pMem;
pShmNode->nRegion++;
@@ -26671,6 +29023,7 @@
}else{
*pp = 0;
}
+ if( pShmNode->isReadonly && rc==SQLITE_OK ) rc = SQLITE_READONLY;
sqlite3_mutex_leave(pShmNode->mutex);
return rc;
}
@@ -26705,6 +29058,8 @@
|| flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED)
|| flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE) );
assert( n==1 || (flags & SQLITE_SHM_EXCLUSIVE)!=0 );
+ assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 );
+ assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 );
mask = (1<<(ofst+n)) - (1<<ofst);
assert( n>1 || mask==(1<<ofst) );
@@ -26842,7 +29197,7 @@
assert( pShmNode->nRef>0 );
pShmNode->nRef--;
if( pShmNode->nRef==0 ){
- if( deleteFlag ) unlink(pShmNode->zFilename);
+ if( deleteFlag && pShmNode->h>=0 ) osUnlink(pShmNode->zFilename);
unixShmPurge(pDbFd);
}
unixLeaveMutex();
@@ -27083,7 +29438,7 @@
lockInfo.l_start = 0;
lockInfo.l_whence = SEEK_SET;
lockInfo.l_type = F_RDLCK;
- if( fcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) {
+ if( osFcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) {
if( strcmp(fsInfo.f_fstypename, "nfs")==0 ){
return &nfsIoMethods;
} else {
@@ -27125,7 +29480,7 @@
lockInfo.l_start = 0;
lockInfo.l_whence = SEEK_SET;
lockInfo.l_type = F_RDLCK;
- if( fcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) {
+ if( osFcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) {
return &posixIoMethods;
}else{
return &semIoMethods;
@@ -27155,11 +29510,9 @@
static int fillInUnixFile(
sqlite3_vfs *pVfs, /* Pointer to vfs object */
int h, /* Open file descriptor of file being opened */
- int dirfd, /* Directory file descriptor */
sqlite3_file *pId, /* Write to the unixFile structure here */
const char *zFilename, /* Name of the file being opened */
- int noLock, /* Omit locking if true */
- int isDelete /* Delete on close if true */
+ int ctrlFlags /* Zero or more UNIXFILE_* values */
){
const sqlite3_io_methods *pLockingStyle;
unixFile *pNew = (unixFile *)pId;
@@ -27167,11 +29520,6 @@
assert( pNew->pInode==NULL );
- /* Parameter isDelete is only used on vxworks. Express this explicitly
- ** here to prevent compiler warnings about unused parameters.
- */
- UNUSED_PARAMETER(isDelete);
-
/* Usually the path zFilename should not be a relative pathname. The
** exception is when opening the proxy "conch" file in builds that
** include the special Apple locking styles.
@@ -27183,21 +29531,31 @@
assert( zFilename==0 || zFilename[0]=='/' );
#endif
+ /* No locking occurs in temporary files */
+ assert( zFilename!=0 || (ctrlFlags & UNIXFILE_NOLOCK)!=0 );
+
OSTRACE(("OPEN %-3d %s\n", h, zFilename));
pNew->h = h;
- pNew->dirfd = dirfd;
- pNew->fileFlags = 0;
+ pNew->pVfs = pVfs;
pNew->zPath = zFilename;
+ pNew->ctrlFlags = (u8)ctrlFlags;
+ if( sqlite3_uri_boolean(((ctrlFlags & UNIXFILE_URI) ? zFilename : 0),
+ "psow", SQLITE_POWERSAFE_OVERWRITE) ){
+ pNew->ctrlFlags |= UNIXFILE_PSOW;
+ }
+ if( memcmp(pVfs->zName,"unix-excl",10)==0 ){
+ pNew->ctrlFlags |= UNIXFILE_EXCL;
+ }
#if OS_VXWORKS
pNew->pId = vxworksFindFileId(zFilename);
if( pNew->pId==0 ){
- noLock = 1;
+ ctrlFlags |= UNIXFILE_NOLOCK;
rc = SQLITE_NOMEM;
}
#endif
- if( noLock ){
+ if( ctrlFlags & UNIXFILE_NOLOCK ){
pLockingStyle = &nolockIoMethods;
}else{
pLockingStyle = (**(finder_type*)pVfs->pAppData)(zFilename, pNew);
@@ -27235,7 +29593,7 @@
** implicit assumption here is that if fstat() fails, things are in
** such bad shape that dropping a lock or two doesn't matter much.
*/
- close(h);
+ robust_close(pNew, h, __LINE__);
h = -1;
}
unixLeaveMutex();
@@ -27261,7 +29619,7 @@
rc = findInodeInfo(pNew, &pNew->pInode);
if( rc!=SQLITE_OK ){
sqlite3_free(pNew->lockingContext);
- close(h);
+ robust_close(pNew, h, __LINE__);
h = -1;
}
unixLeaveMutex();
@@ -27275,6 +29633,7 @@
*/
char *zLockFile;
int nFilename;
+ assert( zFilename!=0 );
nFilename = (int)strlen(zFilename) + 6;
zLockFile = (char *)sqlite3_malloc(nFilename);
if( zLockFile==0 ){
@@ -27312,16 +29671,15 @@
pNew->lastErrno = 0;
#if OS_VXWORKS
if( rc!=SQLITE_OK ){
- if( h>=0 ) close(h);
+ if( h>=0 ) robust_close(pNew, h, __LINE__);
h = -1;
- unlink(zFilename);
+ osUnlink(zFilename);
isDelete = 0;
}
- pNew->isDelete = isDelete;
+ if( isDelete ) pNew->ctrlFlags |= UNIXFILE_DELETE;
#endif
if( rc!=SQLITE_OK ){
- if( dirfd>=0 ) close(dirfd); /* silent leak if fail, already in error */
- if( h>=0 ) close(h);
+ if( h>=0 ) robust_close(pNew, h, __LINE__);
}else{
pNew->pMethod = pLockingStyle;
OpenCounter(+1);
@@ -27330,37 +29688,6 @@
}
/*
-** Open a file descriptor to the directory containing file zFilename.
-** If successful, *pFd is set to the opened file descriptor and
-** SQLITE_OK is returned. If an error occurs, either SQLITE_NOMEM
-** or SQLITE_CANTOPEN is returned and *pFd is set to an undefined
-** value.
-**
-** If SQLITE_OK is returned, the caller is responsible for closing
-** the file descriptor *pFd using close().
-*/
-static int openDirectory(const char *zFilename, int *pFd){
- int ii;
- int fd = -1;
- char zDirname[MAX_PATHNAME+1];
-
- sqlite3_snprintf(MAX_PATHNAME, zDirname, "%s", zFilename);
- for(ii=(int)strlen(zDirname); ii>1 && zDirname[ii]!='/'; ii--);
- if( ii>0 ){
- zDirname[ii] = '\0';
- fd = open(zDirname, O_RDONLY|O_BINARY, 0);
- if( fd>=0 ){
-#ifdef FD_CLOEXEC
- fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0) | FD_CLOEXEC);
-#endif
- OSTRACE(("OPENDIR %-3d %s\n", fd, zDirname));
- }
- }
- *pFd = fd;
- return (fd>=0?SQLITE_OK:unixLogError(SQLITE_CANTOPEN_BKPT, "open", zDirname));
-}
-
-/*
** Return the name of a directory in which to put temporary files.
** If no suitable temporary file directory can be found, return NULL.
*/
@@ -27381,9 +29708,9 @@
if( !azDirs[1] ) azDirs[1] = getenv("TMPDIR");
for(i=0; i<sizeof(azDirs)/sizeof(azDirs[0]); zDir=azDirs[i++]){
if( zDir==0 ) continue;
- if( stat(zDir, &buf) ) continue;
+ if( osStat(zDir, &buf) ) continue;
if( !S_ISDIR(buf.st_mode) ) continue;
- if( access(zDir, 07) ) continue;
+ if( osAccess(zDir, 07) ) continue;
break;
}
return zDir;
@@ -27414,19 +29741,20 @@
/* Check that the output buffer is large enough for the temporary file
** name. If it is not, return SQLITE_ERROR.
*/
- if( (strlen(zDir) + strlen(SQLITE_TEMP_FILE_PREFIX) + 17) >= (size_t)nBuf ){
+ if( (strlen(zDir) + strlen(SQLITE_TEMP_FILE_PREFIX) + 18) >= (size_t)nBuf ){
return SQLITE_ERROR;
}
do{
- sqlite3_snprintf(nBuf-17, zBuf, "%s/"SQLITE_TEMP_FILE_PREFIX, zDir);
+ sqlite3_snprintf(nBuf-18, zBuf, "%s/"SQLITE_TEMP_FILE_PREFIX, zDir);
j = (int)strlen(zBuf);
sqlite3_randomness(15, &zBuf[j]);
for(i=0; i<15; i++, j++){
zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
}
zBuf[j] = 0;
- }while( access(zBuf,0)==0 );
+ zBuf[j+1] = 0;
+ }while( osAccess(zBuf,0)==0 );
return SQLITE_OK;
}
@@ -27474,7 +29802,7 @@
**
** Even if a subsequent open() call does succeed, the consequences of
** not searching for a resusable file descriptor are not dire. */
- if( 0==stat(zPath, &sStat) ){
+ if( 0==osStat(zPath, &sStat) ){
unixInodeInfo *pInode;
unixEnterMutex();
@@ -27514,6 +29842,11 @@
** corresponding database file and sets *pMode to this value. Whenever
** possible, WAL and journal files are created using the same permissions
** as the associated database file.
+**
+** If the SQLITE_ENABLE_8_3_NAMES option is enabled, then the
+** original filename is unavailable. But 8_3_NAMES is only used for
+** FAT filesystems and permissions do not matter there, so just use
+** the default permissions.
*/
static int findCreateFileMode(
const char *zPath, /* Path of file (possibly) being created */
@@ -27521,6 +29854,7 @@
mode_t *pMode /* OUT: Permissions to open file with */
){
int rc = SQLITE_OK; /* Return Code */
+ *pMode = SQLITE_DEFAULT_FILE_PERMISSIONS;
if( flags & (SQLITE_OPEN_WAL|SQLITE_OPEN_MAIN_JOURNAL) ){
char zDb[MAX_PATHNAME+1]; /* Database file path */
int nDb; /* Number of valid bytes in zDb */
@@ -27532,27 +29866,33 @@
**
** "<path to db>-journal"
** "<path to db>-wal"
- ** "<path to db>-journal-NNNN"
- ** "<path to db>-wal-NNNN"
+ ** "<path to db>-journalNN"
+ ** "<path to db>-walNN"
**
- ** where NNNN is a 4 digit decimal number. The NNNN naming schemes are
+ ** where NN is a decimal number. The NN naming schemes are
** used by the test_multiplex.c module.
*/
nDb = sqlite3Strlen30(zPath) - 1;
- while( nDb>0 && zPath[nDb]!='l' ) nDb--;
- nDb -= ((flags & SQLITE_OPEN_WAL) ? 3 : 7);
+#ifdef SQLITE_ENABLE_8_3_NAMES
+ while( nDb>0 && sqlite3Isalnum(zPath[nDb]) ) nDb--;
+ if( nDb==0 || zPath[nDb]!='-' ) return SQLITE_OK;
+#else
+ while( zPath[nDb]!='-' ){
+ assert( nDb>0 );
+ assert( zPath[nDb]!='\n' );
+ nDb--;
+ }
+#endif
memcpy(zDb, zPath, nDb);
zDb[nDb] = '\0';
- if( 0==stat(zDb, &sStat) ){
+ if( 0==osStat(zDb, &sStat) ){
*pMode = sStat.st_mode & 0777;
}else{
rc = SQLITE_IOERR_FSTAT;
}
}else if( flags & SQLITE_OPEN_DELETEONCLOSE ){
*pMode = 0600;
- }else{
- *pMode = SQLITE_DEFAULT_FILE_PERMISSIONS;
}
return rc;
}
@@ -27588,11 +29928,11 @@
){
unixFile *p = (unixFile *)pFile;
int fd = -1; /* File descriptor returned by open() */
- int dirfd = -1; /* Directory file descriptor */
int openFlags = 0; /* Flags to pass to open() */
int eType = flags&0xFFFFFF00; /* Type of file to open */
int noLock; /* True to omit locking primitives */
int rc = SQLITE_OK; /* Function Return Code */
+ int ctrlFlags = 0; /* UNIXFILE_* flags */
int isExclusive = (flags & SQLITE_OPEN_EXCLUSIVE);
int isDelete = (flags & SQLITE_OPEN_DELETEONCLOSE);
@@ -27602,12 +29942,15 @@
#if SQLITE_ENABLE_LOCKING_STYLE
int isAutoProxy = (flags & SQLITE_OPEN_AUTOPROXY);
#endif
+#if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE
+ struct statfs fsInfo;
+#endif
/* If creating a master or main-file journal, this function will open
** a file-descriptor on the directory too. The first time unixSync()
** is called the directory file descriptor will be fsync()ed and close()d.
*/
- int isOpenDirectory = (isCreate && (
+ int syncDir = (isCreate && (
eType==SQLITE_OPEN_MASTER_JOURNAL
|| eType==SQLITE_OPEN_MAIN_JOURNAL
|| eType==SQLITE_OPEN_WAL
@@ -27616,7 +29959,7 @@
/* If argument zPath is a NULL pointer, this function is required to open
** a temporary file. Use this buffer to store the file name in.
*/
- char zTmpname[MAX_PATHNAME+1];
+ char zTmpname[MAX_PATHNAME+2];
const char *zName = zPath;
/* Check the following statements are true:
@@ -27659,14 +30002,24 @@
}
}
p->pUnused = pUnused;
+
+ /* Database filenames are double-zero terminated if they are not
+ ** URIs with parameters. Hence, they can always be passed into
+ ** sqlite3_uri_parameter(). */
+ assert( (flags & SQLITE_OPEN_URI) || zName[strlen(zName)+1]==0 );
+
}else if( !zName ){
/* If zName is NULL, the upper layer is requesting a temp file. */
- assert(isDelete && !isOpenDirectory);
- rc = unixGetTempname(MAX_PATHNAME+1, zTmpname);
+ assert(isDelete && !syncDir);
+ rc = unixGetTempname(MAX_PATHNAME+2, zTmpname);
if( rc!=SQLITE_OK ){
return rc;
}
zName = zTmpname;
+
+ /* Generated temporary filenames are always double-zero terminated
+ ** for use by sqlite3_uri_parameter(). */
+ assert( zName[strlen(zName)+1]==0 );
}
/* Determine the value of the flags parameter passed to POSIX function
@@ -27687,7 +30040,7 @@
assert( eType==SQLITE_OPEN_WAL || eType==SQLITE_OPEN_MAIN_JOURNAL );
return rc;
}
- fd = open(zName, openFlags, openMode);
+ fd = robust_open(zName, openFlags, openMode);
OSTRACE(("OPENX %-3d %s 0%o\n", fd, zName, openFlags));
if( fd<0 && errno!=EISDIR && isReadWrite && !isExclusive ){
/* Failed to open the file for read/write access. Try read-only. */
@@ -27695,7 +30048,8 @@
openFlags &= ~(O_RDWR|O_CREAT);
flags |= SQLITE_OPEN_READONLY;
openFlags |= O_RDONLY;
- fd = open(zName, openFlags, openMode);
+ isReadonly = 1;
+ fd = robust_open(zName, openFlags, openMode);
}
if( fd<0 ){
rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zName);
@@ -27716,7 +30070,7 @@
#if OS_VXWORKS
zPath = zName;
#else
- unlink(zName);
+ osUnlink(zName);
#endif
}
#if SQLITE_ENABLE_LOCKING_STYLE
@@ -27725,39 +30079,31 @@
}
#endif
- if( isOpenDirectory ){
- rc = openDirectory(zPath, &dirfd);
- if( rc!=SQLITE_OK ){
- /* It is safe to close fd at this point, because it is guaranteed not
- ** to be open on a database file. If it were open on a database file,
- ** it would not be safe to close as this would release any locks held
- ** on the file by this process. */
- assert( eType!=SQLITE_OPEN_MAIN_DB );
- close(fd); /* silently leak if fail, already in error */
- goto open_finished;
- }
- }
-
#ifdef FD_CLOEXEC
- fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0) | FD_CLOEXEC);
+ osFcntl(fd, F_SETFD, osFcntl(fd, F_GETFD, 0) | FD_CLOEXEC);
#endif
noLock = eType!=SQLITE_OPEN_MAIN_DB;
#if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE
- struct statfs fsInfo;
if( fstatfs(fd, &fsInfo) == -1 ){
((unixFile*)pFile)->lastErrno = errno;
- if( dirfd>=0 ) close(dirfd); /* silently leak if fail, in error */
- close(fd); /* silently leak if fail, in error */
+ robust_close(p, fd, __LINE__);
return SQLITE_IOERR_ACCESS;
}
if (0 == strncmp("msdos", fsInfo.f_fstypename, 5)) {
((unixFile*)pFile)->fsFlags |= SQLITE_FSFLAGS_IS_MSDOS;
}
#endif
-
+
+ /* Set up appropriate ctrlFlags */
+ if( isDelete ) ctrlFlags |= UNIXFILE_DELETE;
+ if( isReadonly ) ctrlFlags |= UNIXFILE_RDONLY;
+ if( noLock ) ctrlFlags |= UNIXFILE_NOLOCK;
+ if( syncDir ) ctrlFlags |= UNIXFILE_DIRSYNC;
+ if( flags & SQLITE_OPEN_URI ) ctrlFlags |= UNIXFILE_URI;
+
#if SQLITE_ENABLE_LOCKING_STYLE
#if SQLITE_PREFER_PROXY_LOCKING
isAutoProxy = 1;
@@ -27771,7 +30117,6 @@
if( envforce!=NULL ){
useProxy = atoi(envforce)>0;
}else{
- struct statfs fsInfo;
if( statfs(zPath, &fsInfo) == -1 ){
/* In theory, the close(fd) call is sub-optimal. If the file opened
** with fd is a database file, and there are other connections open
@@ -27781,17 +30126,14 @@
** not while other file descriptors opened by the same process on
** the same file are working. */
p->lastErrno = errno;
- if( dirfd>=0 ){
- close(dirfd); /* silently leak if fail, in error */
- }
- close(fd); /* silently leak if fail, in error */
+ robust_close(p, fd, __LINE__);
rc = SQLITE_IOERR_ACCESS;
goto open_finished;
}
useProxy = !(fsInfo.f_flags&MNT_LOCAL);
}
if( useProxy ){
- rc = fillInUnixFile(pVfs, fd, dirfd, pFile, zPath, noLock, isDelete);
+ rc = fillInUnixFile(pVfs, fd, pFile, zPath, ctrlFlags);
if( rc==SQLITE_OK ){
rc = proxyTransformUnixFile((unixFile*)pFile, ":auto:");
if( rc!=SQLITE_OK ){
@@ -27808,7 +30150,8 @@
}
#endif
- rc = fillInUnixFile(pVfs, fd, dirfd, pFile, zPath, noLock, isDelete);
+ rc = fillInUnixFile(pVfs, fd, pFile, zPath, ctrlFlags);
+
open_finished:
if( rc!=SQLITE_OK ){
sqlite3_free(p->pUnused);
@@ -27829,13 +30172,13 @@
int rc = SQLITE_OK;
UNUSED_PARAMETER(NotUsed);
SimulateIOError(return SQLITE_IOERR_DELETE);
- if( unlink(zPath)==(-1) && errno!=ENOENT ){
+ if( osUnlink(zPath)==(-1) && errno!=ENOENT ){
return unixLogError(SQLITE_IOERR_DELETE, "unlink", zPath);
}
#ifndef SQLITE_DISABLE_DIRSYNC
- if( dirSync ){
+ if( (dirSync & 1)!=0 ){
int fd;
- rc = openDirectory(zPath, &fd);
+ rc = osOpenDirectory(zPath, &fd);
if( rc==SQLITE_OK ){
#if OS_VXWORKS
if( fsync(fd)==-1 )
@@ -27845,9 +30188,9 @@
{
rc = unixLogError(SQLITE_IOERR_DIR_FSYNC, "fsync", zPath);
}
- if( close(fd)&&!rc ){
- rc = unixLogError(SQLITE_IOERR_DIR_CLOSE, "close", zPath);
- }
+ robust_close(0, fd, __LINE__);
+ }else if( rc==SQLITE_CANTOPEN ){
+ rc = SQLITE_OK;
}
}
#endif
@@ -27887,10 +30230,10 @@
default:
assert(!"Invalid flags argument");
}
- *pResOut = (access(zPath, amode)==0);
+ *pResOut = (osAccess(zPath, amode)==0);
if( flags==SQLITE_ACCESS_EXISTS && *pResOut ){
struct stat buf;
- if( 0==stat(zPath, &buf) && buf.st_size==0 ){
+ if( 0==osStat(zPath, &buf) && buf.st_size==0 ){
*pResOut = 0;
}
}
@@ -27929,7 +30272,7 @@
sqlite3_snprintf(nOut, zOut, "%s", zPath);
}else{
int nCwd;
- if( getcwd(zOut, nOut-1)==0 ){
+ if( osGetcwd(zOut, nOut-1)==0 ){
return unixLogError(SQLITE_CANTOPEN_BKPT, "getcwd", zPath);
}
nCwd = (int)strlen(zOut);
@@ -28024,7 +30367,7 @@
#if !defined(SQLITE_TEST)
{
int pid, fd;
- fd = open("/dev/urandom", O_RDONLY);
+ fd = robust_open("/dev/urandom", O_RDONLY, 0);
if( fd<0 ){
time_t t;
time(&t);
@@ -28034,8 +30377,8 @@
assert( sizeof(t)+sizeof(pid)<=(size_t)nBuf );
nBuf = sizeof(t) + sizeof(pid);
}else{
- do{ nBuf = read(fd, zBuf, nBuf); }while( nBuf<0 && errno==EINTR );
- close(fd);
+ do{ nBuf = osRead(fd, zBuf, nBuf); }while( nBuf<0 && errno==EINTR );
+ robust_close(0, fd, __LINE__);
}
}
#endif
@@ -28088,10 +30431,12 @@
** epoch of noon in Greenwich on November 24, 4714 B.C according to the
** proleptic Gregorian calendar.
**
-** On success, return 0. Return 1 if the time and date cannot be found.
+** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date
+** cannot be found.
*/
static int unixCurrentTimeInt64(sqlite3_vfs *NotUsed, sqlite3_int64 *piNow){
static const sqlite3_int64 unixEpoch = 24405875*(sqlite3_int64)8640000;
+ int rc = SQLITE_OK;
#if defined(NO_GETTOD)
time_t t;
time(&t);
@@ -28102,8 +30447,11 @@
*piNow = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_nsec/1000000;
#else
struct timeval sNow;
- gettimeofday(&sNow, 0);
- *piNow = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_usec/1000;
+ if( gettimeofday(&sNow, 0)==0 ){
+ *piNow = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_usec/1000;
+ }else{
+ rc = SQLITE_ERROR;
+ }
#endif
#ifdef SQLITE_TEST
@@ -28112,7 +30460,7 @@
}
#endif
UNUSED_PARAMETER(NotUsed);
- return 0;
+ return rc;
}
/*
@@ -28121,11 +30469,12 @@
** return 0. Return 1 if the time and date cannot be found.
*/
static int unixCurrentTime(sqlite3_vfs *NotUsed, double *prNow){
- sqlite3_int64 i;
+ sqlite3_int64 i = 0;
+ int rc;
UNUSED_PARAMETER(NotUsed);
- unixCurrentTimeInt64(0, &i);
+ rc = unixCurrentTimeInt64(0, &i);
*prNow = i/86400000.0;
- return 0;
+ return rc;
}
/*
@@ -28378,7 +30727,7 @@
if( i-start>2 || (i-start==1 && buf[start] != '.' && buf[start] != '/')
|| (i-start==2 && buf[start] != '.' && buf[start+1] != '.') ){
buf[i]='\0';
- if( mkdir(buf, SQLITE_DEFAULT_PROXYDIR_PERMISSIONS) ){
+ if( osMkdir(buf, SQLITE_DEFAULT_PROXYDIR_PERMISSIONS) ){
int err=errno;
if( err!=EEXIST ) {
OSTRACE(("CREATELOCKPATH FAILED creating %s, "
@@ -28409,7 +30758,6 @@
int islockfile /* if non zero missing dirs will be created */
) {
int fd = -1;
- int dirfd = -1;
unixFile *pNew;
int rc = SQLITE_OK;
int openFlags = O_RDWR | O_CREAT;
@@ -28433,17 +30781,17 @@
}
}
if( fd<0 ){
- fd = open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS);
+ fd = robust_open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS);
terrno = errno;
if( fd<0 && errno==ENOENT && islockfile ){
if( proxyCreateLockPath(path) == SQLITE_OK ){
- fd = open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS);
+ fd = robust_open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS);
}
}
}
if( fd<0 ){
openFlags = O_RDONLY;
- fd = open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS);
+ fd = robust_open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS);
terrno = errno;
}
if( fd<0 ){
@@ -28467,18 +30815,20 @@
}
memset(pNew, 0, sizeof(unixFile));
pNew->openFlags = openFlags;
+ memset(&dummyVfs, 0, sizeof(dummyVfs));
dummyVfs.pAppData = (void*)&autolockIoFinder;
+ dummyVfs.zName = "dummy";
pUnused->fd = fd;
pUnused->flags = openFlags;
pNew->pUnused = pUnused;
- rc = fillInUnixFile(&dummyVfs, fd, dirfd, (sqlite3_file*)pNew, path, 0, 0);
+ rc = fillInUnixFile(&dummyVfs, fd, (sqlite3_file*)pNew, path, 0);
if( rc==SQLITE_OK ){
*ppFile = pNew;
return SQLITE_OK;
}
end_create_proxy:
- close(fd); /* silently leak fd if error, we're already in error */
+ robust_close(pNew, fd, __LINE__);
sqlite3_free(pNew);
sqlite3_free(pUnused);
return rc;
@@ -28498,19 +30848,22 @@
** bytes of writable memory.
*/
static int proxyGetHostID(unsigned char *pHostID, int *pError){
- struct timespec timeout = {1, 0}; /* 1 sec timeout */
-
assert(PROXY_HOSTIDLEN == sizeof(uuid_t));
memset(pHostID, 0, PROXY_HOSTIDLEN);
#if defined(__MAX_OS_X_VERSION_MIN_REQUIRED)\
&& __MAC_OS_X_VERSION_MIN_REQUIRED<1050
- if( gethostuuid(pHostID, &timeout) ){
- int err = errno;
- if( pError ){
- *pError = err;
+ {
+ static const struct timespec timeout = {1, 0}; /* 1 sec timeout */
+ if( gethostuuid(pHostID, &timeout) ){
+ int err = errno;
+ if( pError ){
+ *pError = err;
+ }
+ return SQLITE_IOERR;
}
- return SQLITE_IOERR;
}
+#else
+ UNUSED_PARAMETER(pError);
#endif
#ifdef SQLITE_TEST
/* simulate multiple hosts by creating unique hostid file paths */
@@ -28556,18 +30909,19 @@
goto end_breaklock;
}
/* read the conch content */
- readLen = pread(conchFile->h, buf, PROXY_MAXCONCHLEN, 0);
+ readLen = osPread(conchFile->h, buf, PROXY_MAXCONCHLEN, 0);
if( readLen<PROXY_PATHINDEX ){
sqlite3_snprintf(sizeof(errmsg),errmsg,"read error (len %d)",(int)readLen);
goto end_breaklock;
}
/* write it out to the temporary break file */
- fd = open(tPath, (O_RDWR|O_CREAT|O_EXCL), SQLITE_DEFAULT_FILE_PERMISSIONS);
+ fd = robust_open(tPath, (O_RDWR|O_CREAT|O_EXCL),
+ SQLITE_DEFAULT_FILE_PERMISSIONS);
if( fd<0 ){
sqlite3_snprintf(sizeof(errmsg), errmsg, "create failed (%d)", errno);
goto end_breaklock;
}
- if( pwrite(fd, buf, readLen, 0) != (ssize_t)readLen ){
+ if( osPwrite(fd, buf, readLen, 0) != (ssize_t)readLen ){
sqlite3_snprintf(sizeof(errmsg), errmsg, "write failed (%d)", errno);
goto end_breaklock;
}
@@ -28577,15 +30931,15 @@
}
rc = 0;
fprintf(stderr, "broke stale lock on %s\n", cPath);
- close(conchFile->h);
+ robust_close(pFile, conchFile->h, __LINE__);
conchFile->h = fd;
conchFile->openFlags = O_RDWR | O_CREAT;
end_breaklock:
if( rc ){
if( fd>=0 ){
- unlink(tPath);
- close(fd);
+ osUnlink(tPath);
+ robust_close(pFile, fd, __LINE__);
}
fprintf(stderr, "failed to break stale lock on %s, %s\n", cPath, errmsg);
}
@@ -28602,6 +30956,7 @@
int nTries = 0;
struct timespec conchModTime;
+ memset(&conchModTime, 0, sizeof(conchModTime));
do {
rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, lockType);
nTries ++;
@@ -28613,7 +30968,7 @@
* 3rd try: break the lock unless the mod time has changed.
*/
struct stat buf;
- if( fstat(conchFile->h, &buf) ){
+ if( osFstat(conchFile->h, &buf) ){
pFile->lastErrno = errno;
return SQLITE_IOERR_LOCK;
}
@@ -28632,7 +30987,7 @@
if( nTries==2 ){
char tBuf[PROXY_MAXCONCHLEN];
- int len = pread(conchFile->h, tBuf, PROXY_MAXCONCHLEN, 0);
+ int len = osPread(conchFile->h, tBuf, PROXY_MAXCONCHLEN, 0);
if( len<0 ){
pFile->lastErrno = errno;
return SQLITE_IOERR_LOCK;
@@ -28802,17 +31157,16 @@
*/
if( rc==SQLITE_OK && createConch ){
struct stat buf;
- int rc;
- int err = fstat(pFile->h, &buf);
+ int err = osFstat(pFile->h, &buf);
if( err==0 ){
mode_t cmode = buf.st_mode&(S_IRUSR|S_IWUSR | S_IRGRP|S_IWGRP |
S_IROTH|S_IWOTH);
/* try to match the database file R/W permissions, ignore failure */
#ifndef SQLITE_PROXY_DEBUG
- fchmod(conchFile->h, cmode);
+ osFchmod(conchFile->h, cmode);
#else
do{
- rc = fchmod(conchFile->h, cmode);
+ rc = osFchmod(conchFile->h, cmode);
}while( rc==(-1) && errno==EINTR );
if( rc!=0 ){
int code = errno;
@@ -28834,18 +31188,12 @@
end_takeconch:
OSTRACE(("TRANSPROXY: CLOSE %d\n", pFile->h));
if( rc==SQLITE_OK && pFile->openFlags ){
+ int fd;
if( pFile->h>=0 ){
-#ifdef STRICT_CLOSE_ERROR
- if( close(pFile->h) ){
- pFile->lastErrno = errno;
- return SQLITE_IOERR_CLOSE;
- }
-#else
- close(pFile->h); /* silently leak fd if fail */
-#endif
+ robust_close(pFile, pFile->h, __LINE__);
}
pFile->h = -1;
- int fd = open(pCtx->dbPath, pFile->openFlags,
+ fd = robust_open(pCtx->dbPath, pFile->openFlags,
SQLITE_DEFAULT_FILE_PERMISSIONS);
OSTRACE(("TRANSPROXY: OPEN %d\n", fd));
if( fd>=0 ){
@@ -29071,7 +31419,7 @@
struct stat conchInfo;
int goLockless = 0;
- if( stat(pCtx->conchFilePath, &conchInfo) == -1 ) {
+ if( osStat(pCtx->conchFilePath, &conchInfo) == -1 ) {
int err = errno;
if( (err==ENOENT) && (statfs(dbPath, &fsInfo) != -1) ){
goLockless = (fsInfo.f_flags&MNT_RDONLY) == MNT_RDONLY;
@@ -29356,7 +31704,7 @@
** that filesystem time.
*/
#define UNIXVFS(VFSNAME, FINDER) { \
- 2, /* iVersion */ \
+ 3, /* iVersion */ \
sizeof(unixFile), /* szOsFile */ \
MAX_PATHNAME, /* mxPathname */ \
0, /* pNext */ \
@@ -29375,6 +31723,9 @@
unixCurrentTime, /* xCurrentTime */ \
unixGetLastError, /* xGetLastError */ \
unixCurrentTimeInt64, /* xCurrentTimeInt64 */ \
+ unixSetSystemCall, /* xSetSystemCall */ \
+ unixGetSystemCall, /* xGetSystemCall */ \
+ unixNextSystemCall, /* xNextSystemCall */ \
}
/*
@@ -29392,6 +31743,7 @@
#endif
UNIXVFS("unix-none", nolockIoFinder ),
UNIXVFS("unix-dotfile", dotlockIoFinder ),
+ UNIXVFS("unix-excl", posixIoFinder ),
#if OS_VXWORKS
UNIXVFS("unix-namedsem", semIoFinder ),
#endif
@@ -29409,6 +31761,10 @@
};
unsigned int i; /* Loop counter */
+ /* Double-check that the aSyscall[] array has been constructed
+ ** correctly. See ticket [bb3a86e890c8e96ab] */
+ assert( ArraySize(aSyscall)==20 );
+
/* Register all VFSes defined in the aVfs[] array */
for(i=0; i<(sizeof(aVfs)/sizeof(sqlite3_vfs)); i++){
sqlite3_vfs_register(&aVfs[i], i==0);
@@ -29443,51 +31799,15 @@
**
******************************************************************************
**
-** This file contains code that is specific to windows.
+** This file contains code that is specific to Windows.
*/
-#if SQLITE_OS_WIN /* This file is used for windows only */
-
-
-/*
-** A Note About Memory Allocation:
-**
-** This driver uses malloc()/free() directly rather than going through
-** the SQLite-wrappers sqlite3_malloc()/sqlite3_free(). Those wrappers
-** are designed for use on embedded systems where memory is scarce and
-** malloc failures happen frequently. Win32 does not typically run on
-** embedded systems, and when it does the developers normally have bigger
-** problems to worry about than running out of memory. So there is not
-** a compelling need to use the wrappers.
-**
-** But there is a good reason to not use the wrappers. If we use the
-** wrappers then we will get simulated malloc() failures within this
-** driver. And that causes all kinds of problems for our tests. We
-** could enhance SQLite to deal with simulated malloc failures within
-** the OS driver, but the code to deal with those failure would not
-** be exercised on Linux (which does not need to malloc() in the driver)
-** and so we would have difficulty writing coverage tests for that
-** code. Better to leave the code out, we think.
-**
-** The point of this discussion is as follows: When creating a new
-** OS layer for an embedded system, if you use this file as an example,
-** avoid the use of malloc()/free(). Those routines work ok on windows
-** desktops but not so well in embedded systems.
-*/
-
-#include <winbase.h>
+#if SQLITE_OS_WIN /* This file is used for Windows only */
#ifdef __CYGWIN__
# include <sys/cygwin.h>
#endif
/*
-** Macros used to determine whether or not to use threads.
-*/
-#if defined(THREADSAFE) && THREADSAFE
-# define SQLITE_W32_THREADS 1
-#endif
-
-/*
** Include code that is common to all os_*.c files
*/
/************** Include os_common.h in the middle of os_win.c ****************/
@@ -29523,11 +31843,14 @@
# error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead."
#endif
-#ifdef SQLITE_DEBUG
-SQLITE_PRIVATE int sqlite3OSTrace = 0;
-#define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X
+#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG)
+# ifndef SQLITE_DEBUG_OS_TRACE
+# define SQLITE_DEBUG_OS_TRACE 0
+# endif
+ int sqlite3OSTrace = SQLITE_DEBUG_OS_TRACE;
+# define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X
#else
-#define OSTRACE(X)
+# define OSTRACE(X)
#endif
/*
@@ -29698,21 +32021,12 @@
/************** Continuing where we left off in os_win.c *********************/
/*
-** Some microsoft compilers lack this definition.
+** Some Microsoft compilers lack this definition.
*/
#ifndef INVALID_FILE_ATTRIBUTES
# define INVALID_FILE_ATTRIBUTES ((DWORD)-1)
#endif
-/*
-** Determine if we are dealing with WindowsCE - which has a much
-** reduced API.
-*/
-#if SQLITE_OS_WINCE
-# define AreFileApisANSI() 1
-# define FormatMessageW(a,b,c,d,e,f,g) 0
-#endif
-
/* Forward references */
typedef struct winShm winShm; /* A connection to shared-memory */
typedef struct winShmNode winShmNode; /* A region of shared-memory */
@@ -29739,15 +32053,15 @@
const sqlite3_io_methods *pMethod; /*** Must be first ***/
sqlite3_vfs *pVfs; /* The VFS used to open this file */
HANDLE h; /* Handle for accessing the file */
- unsigned char locktype; /* Type of lock currently held on this file */
+ u8 locktype; /* Type of lock currently held on this file */
short sharedLockByte; /* Randomly chosen byte used as a shared lock */
+ u8 ctrlFlags; /* Flags. See WINFILE_* below */
DWORD lastErrno; /* The Windows errno from the last I/O error */
- DWORD sectorSize; /* Sector size of the device file is on */
winShm *pShm; /* Instance of shared memory on this file */
const char *zPath; /* Full pathname of this file */
int szChunk; /* Chunk size configured by FCNTL_CHUNK_SIZE */
#if SQLITE_OS_WINCE
- WCHAR *zDeleteOnClose; /* Name of file to delete when closing */
+ LPWSTR zDeleteOnClose; /* Name of file to delete when closing */
HANDLE hMutex; /* Mutex used to control access to shared lock */
HANDLE hShared; /* Shared memory segment used for locking */
winceLock local; /* Locks obtained by this instance of winFile */
@@ -29756,20 +32070,89 @@
};
/*
-** Forward prototypes.
+** Allowed values for winFile.ctrlFlags
*/
-static int getSectorSize(
- sqlite3_vfs *pVfs,
- const char *zRelative /* UTF-8 file name */
-);
+#define WINFILE_PERSIST_WAL 0x04 /* Persistent WAL mode */
+#define WINFILE_PSOW 0x10 /* SQLITE_IOCAP_POWERSAFE_OVERWRITE */
+
+/*
+ * If compiled with SQLITE_WIN32_MALLOC on Windows, we will use the
+ * various Win32 API heap functions instead of our own.
+ */
+#ifdef SQLITE_WIN32_MALLOC
+/*
+ * The initial size of the Win32-specific heap. This value may be zero.
+ */
+#ifndef SQLITE_WIN32_HEAP_INIT_SIZE
+# define SQLITE_WIN32_HEAP_INIT_SIZE ((SQLITE_DEFAULT_CACHE_SIZE) * \
+ (SQLITE_DEFAULT_PAGE_SIZE) + 4194304)
+#endif
+
+/*
+ * The maximum size of the Win32-specific heap. This value may be zero.
+ */
+#ifndef SQLITE_WIN32_HEAP_MAX_SIZE
+# define SQLITE_WIN32_HEAP_MAX_SIZE (0)
+#endif
+
+/*
+ * The extra flags to use in calls to the Win32 heap APIs. This value may be
+ * zero for the default behavior.
+ */
+#ifndef SQLITE_WIN32_HEAP_FLAGS
+# define SQLITE_WIN32_HEAP_FLAGS (0)
+#endif
+
+/*
+** The winMemData structure stores information required by the Win32-specific
+** sqlite3_mem_methods implementation.
+*/
+typedef struct winMemData winMemData;
+struct winMemData {
+#ifndef NDEBUG
+ u32 magic; /* Magic number to detect structure corruption. */
+#endif
+ HANDLE hHeap; /* The handle to our heap. */
+ BOOL bOwned; /* Do we own the heap (i.e. destroy it on shutdown)? */
+};
+
+#ifndef NDEBUG
+#define WINMEM_MAGIC 0x42b2830b
+#endif
+
+static struct winMemData win_mem_data = {
+#ifndef NDEBUG
+ WINMEM_MAGIC,
+#endif
+ NULL, FALSE
+};
+
+#ifndef NDEBUG
+#define winMemAssertMagic() assert( win_mem_data.magic==WINMEM_MAGIC )
+#else
+#define winMemAssertMagic()
+#endif
+
+#define winMemGetHeap() win_mem_data.hHeap
+
+static void *winMemMalloc(int nBytes);
+static void winMemFree(void *pPrior);
+static void *winMemRealloc(void *pPrior, int nBytes);
+static int winMemSize(void *p);
+static int winMemRoundup(int n);
+static int winMemInit(void *pAppData);
+static void winMemShutdown(void *pAppData);
+
+SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetWin32(void);
+#endif /* SQLITE_WIN32_MALLOC */
/*
** The following variable is (normally) set once and never changes
-** thereafter. It records whether the operating system is Win95
+** thereafter. It records whether the operating system is Win9x
** or WinNT.
**
** 0: Operating system unknown.
-** 1: Operating system is Win95.
+** 1: Operating system is Win9x.
** 2: Operating system is WinNT.
**
** In order to facilitate testing on a WinNT system, the test fixture
@@ -29782,6 +32165,536 @@
#endif
/*
+** Many system calls are accessed through pointer-to-functions so that
+** they may be overridden at runtime to facilitate fault injection during
+** testing and sandboxing. The following array holds the names and pointers
+** to all overrideable system calls.
+*/
+#if !SQLITE_OS_WINCE
+# define SQLITE_WIN32_HAS_ANSI
+#endif
+
+#if SQLITE_OS_WINCE || SQLITE_OS_WINNT
+# define SQLITE_WIN32_HAS_WIDE
+#endif
+
+#ifndef SYSCALL
+# define SYSCALL sqlite3_syscall_ptr
+#endif
+
+#if SQLITE_OS_WINCE
+/*
+** These macros are necessary because Windows CE does not natively support the
+** Win32 APIs LockFile, UnlockFile, and LockFileEx.
+ */
+
+# define LockFile(a,b,c,d,e) winceLockFile(&a, b, c, d, e)
+# define UnlockFile(a,b,c,d,e) winceUnlockFile(&a, b, c, d, e)
+# define LockFileEx(a,b,c,d,e,f) winceLockFileEx(&a, b, c, d, e, f)
+
+/*
+** These are the special syscall hacks for Windows CE. The locking related
+** defines here refer to the macros defined just above.
+ */
+
+# define osAreFileApisANSI() 1
+# define osLockFile LockFile
+# define osUnlockFile UnlockFile
+# define osLockFileEx LockFileEx
+#endif
+
+static struct win_syscall {
+ const char *zName; /* Name of the sytem call */
+ sqlite3_syscall_ptr pCurrent; /* Current value of the system call */
+ sqlite3_syscall_ptr pDefault; /* Default value */
+} aSyscall[] = {
+#if !SQLITE_OS_WINCE
+ { "AreFileApisANSI", (SYSCALL)AreFileApisANSI, 0 },
+
+#define osAreFileApisANSI ((BOOL(WINAPI*)(VOID))aSyscall[0].pCurrent)
+#else
+ { "AreFileApisANSI", (SYSCALL)0, 0 },
+#endif
+
+#if SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_WIDE)
+ { "CharLowerW", (SYSCALL)CharLowerW, 0 },
+#else
+ { "CharLowerW", (SYSCALL)0, 0 },
+#endif
+
+#define osCharLowerW ((LPWSTR(WINAPI*)(LPWSTR))aSyscall[1].pCurrent)
+
+#if SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_WIDE)
+ { "CharUpperW", (SYSCALL)CharUpperW, 0 },
+#else
+ { "CharUpperW", (SYSCALL)0, 0 },
+#endif
+
+#define osCharUpperW ((LPWSTR(WINAPI*)(LPWSTR))aSyscall[2].pCurrent)
+
+ { "CloseHandle", (SYSCALL)CloseHandle, 0 },
+
+#define osCloseHandle ((BOOL(WINAPI*)(HANDLE))aSyscall[3].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "CreateFileA", (SYSCALL)CreateFileA, 0 },
+#else
+ { "CreateFileA", (SYSCALL)0, 0 },
+#endif
+
+#define osCreateFileA ((HANDLE(WINAPI*)(LPCSTR,DWORD,DWORD, \
+ LPSECURITY_ATTRIBUTES,DWORD,DWORD,HANDLE))aSyscall[4].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "CreateFileW", (SYSCALL)CreateFileW, 0 },
+#else
+ { "CreateFileW", (SYSCALL)0, 0 },
+#endif
+
+#define osCreateFileW ((HANDLE(WINAPI*)(LPCWSTR,DWORD,DWORD, \
+ LPSECURITY_ATTRIBUTES,DWORD,DWORD,HANDLE))aSyscall[5].pCurrent)
+
+ { "CreateFileMapping", (SYSCALL)CreateFileMapping, 0 },
+
+#define osCreateFileMapping ((HANDLE(WINAPI*)(HANDLE,LPSECURITY_ATTRIBUTES, \
+ DWORD,DWORD,DWORD,LPCTSTR))aSyscall[6].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "CreateFileMappingW", (SYSCALL)CreateFileMappingW, 0 },
+#else
+ { "CreateFileMappingW", (SYSCALL)0, 0 },
+#endif
+
+#define osCreateFileMappingW ((HANDLE(WINAPI*)(HANDLE,LPSECURITY_ATTRIBUTES, \
+ DWORD,DWORD,DWORD,LPCWSTR))aSyscall[7].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "CreateMutexW", (SYSCALL)CreateMutexW, 0 },
+#else
+ { "CreateMutexW", (SYSCALL)0, 0 },
+#endif
+
+#define osCreateMutexW ((HANDLE(WINAPI*)(LPSECURITY_ATTRIBUTES,BOOL, \
+ LPCWSTR))aSyscall[8].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "DeleteFileA", (SYSCALL)DeleteFileA, 0 },
+#else
+ { "DeleteFileA", (SYSCALL)0, 0 },
+#endif
+
+#define osDeleteFileA ((BOOL(WINAPI*)(LPCSTR))aSyscall[9].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "DeleteFileW", (SYSCALL)DeleteFileW, 0 },
+#else
+ { "DeleteFileW", (SYSCALL)0, 0 },
+#endif
+
+#define osDeleteFileW ((BOOL(WINAPI*)(LPCWSTR))aSyscall[10].pCurrent)
+
+#if SQLITE_OS_WINCE
+ { "FileTimeToLocalFileTime", (SYSCALL)FileTimeToLocalFileTime, 0 },
+#else
+ { "FileTimeToLocalFileTime", (SYSCALL)0, 0 },
+#endif
+
+#define osFileTimeToLocalFileTime ((BOOL(WINAPI*)(CONST FILETIME*, \
+ LPFILETIME))aSyscall[11].pCurrent)
+
+#if SQLITE_OS_WINCE
+ { "FileTimeToSystemTime", (SYSCALL)FileTimeToSystemTime, 0 },
+#else
+ { "FileTimeToSystemTime", (SYSCALL)0, 0 },
+#endif
+
+#define osFileTimeToSystemTime ((BOOL(WINAPI*)(CONST FILETIME*, \
+ LPSYSTEMTIME))aSyscall[12].pCurrent)
+
+ { "FlushFileBuffers", (SYSCALL)FlushFileBuffers, 0 },
+
+#define osFlushFileBuffers ((BOOL(WINAPI*)(HANDLE))aSyscall[13].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "FormatMessageA", (SYSCALL)FormatMessageA, 0 },
+#else
+ { "FormatMessageA", (SYSCALL)0, 0 },
+#endif
+
+#define osFormatMessageA ((DWORD(WINAPI*)(DWORD,LPCVOID,DWORD,DWORD,LPSTR, \
+ DWORD,va_list*))aSyscall[14].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "FormatMessageW", (SYSCALL)FormatMessageW, 0 },
+#else
+ { "FormatMessageW", (SYSCALL)0, 0 },
+#endif
+
+#define osFormatMessageW ((DWORD(WINAPI*)(DWORD,LPCVOID,DWORD,DWORD,LPWSTR, \
+ DWORD,va_list*))aSyscall[15].pCurrent)
+
+ { "FreeLibrary", (SYSCALL)FreeLibrary, 0 },
+
+#define osFreeLibrary ((BOOL(WINAPI*)(HMODULE))aSyscall[16].pCurrent)
+
+ { "GetCurrentProcessId", (SYSCALL)GetCurrentProcessId, 0 },
+
+#define osGetCurrentProcessId ((DWORD(WINAPI*)(VOID))aSyscall[17].pCurrent)
+
+#if !SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_ANSI)
+ { "GetDiskFreeSpaceA", (SYSCALL)GetDiskFreeSpaceA, 0 },
+#else
+ { "GetDiskFreeSpaceA", (SYSCALL)0, 0 },
+#endif
+
+#define osGetDiskFreeSpaceA ((BOOL(WINAPI*)(LPCSTR,LPDWORD,LPDWORD,LPDWORD, \
+ LPDWORD))aSyscall[18].pCurrent)
+
+#if !SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_WIDE)
+ { "GetDiskFreeSpaceW", (SYSCALL)GetDiskFreeSpaceW, 0 },
+#else
+ { "GetDiskFreeSpaceW", (SYSCALL)0, 0 },
+#endif
+
+#define osGetDiskFreeSpaceW ((BOOL(WINAPI*)(LPCWSTR,LPDWORD,LPDWORD,LPDWORD, \
+ LPDWORD))aSyscall[19].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "GetFileAttributesA", (SYSCALL)GetFileAttributesA, 0 },
+#else
+ { "GetFileAttributesA", (SYSCALL)0, 0 },
+#endif
+
+#define osGetFileAttributesA ((DWORD(WINAPI*)(LPCSTR))aSyscall[20].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "GetFileAttributesW", (SYSCALL)GetFileAttributesW, 0 },
+#else
+ { "GetFileAttributesW", (SYSCALL)0, 0 },
+#endif
+
+#define osGetFileAttributesW ((DWORD(WINAPI*)(LPCWSTR))aSyscall[21].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "GetFileAttributesExW", (SYSCALL)GetFileAttributesExW, 0 },
+#else
+ { "GetFileAttributesExW", (SYSCALL)0, 0 },
+#endif
+
+#define osGetFileAttributesExW ((BOOL(WINAPI*)(LPCWSTR,GET_FILEEX_INFO_LEVELS, \
+ LPVOID))aSyscall[22].pCurrent)
+
+ { "GetFileSize", (SYSCALL)GetFileSize, 0 },
+
+#define osGetFileSize ((DWORD(WINAPI*)(HANDLE,LPDWORD))aSyscall[23].pCurrent)
+
+#if !SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_ANSI)
+ { "GetFullPathNameA", (SYSCALL)GetFullPathNameA, 0 },
+#else
+ { "GetFullPathNameA", (SYSCALL)0, 0 },
+#endif
+
+#define osGetFullPathNameA ((DWORD(WINAPI*)(LPCSTR,DWORD,LPSTR, \
+ LPSTR*))aSyscall[24].pCurrent)
+
+#if !SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_WIDE)
+ { "GetFullPathNameW", (SYSCALL)GetFullPathNameW, 0 },
+#else
+ { "GetFullPathNameW", (SYSCALL)0, 0 },
+#endif
+
+#define osGetFullPathNameW ((DWORD(WINAPI*)(LPCWSTR,DWORD,LPWSTR, \
+ LPWSTR*))aSyscall[25].pCurrent)
+
+ { "GetLastError", (SYSCALL)GetLastError, 0 },
+
+#define osGetLastError ((DWORD(WINAPI*)(VOID))aSyscall[26].pCurrent)
+
+#if SQLITE_OS_WINCE
+ /* The GetProcAddressA() routine is only available on Windows CE. */
+ { "GetProcAddressA", (SYSCALL)GetProcAddressA, 0 },
+#else
+ /* All other Windows platforms expect GetProcAddress() to take
+ ** an ANSI string regardless of the _UNICODE setting */
+ { "GetProcAddressA", (SYSCALL)GetProcAddress, 0 },
+#endif
+
+#define osGetProcAddressA ((FARPROC(WINAPI*)(HMODULE, \
+ LPCSTR))aSyscall[27].pCurrent)
+
+ { "GetSystemInfo", (SYSCALL)GetSystemInfo, 0 },
+
+#define osGetSystemInfo ((VOID(WINAPI*)(LPSYSTEM_INFO))aSyscall[28].pCurrent)
+
+ { "GetSystemTime", (SYSCALL)GetSystemTime, 0 },
+
+#define osGetSystemTime ((VOID(WINAPI*)(LPSYSTEMTIME))aSyscall[29].pCurrent)
+
+#if !SQLITE_OS_WINCE
+ { "GetSystemTimeAsFileTime", (SYSCALL)GetSystemTimeAsFileTime, 0 },
+#else
+ { "GetSystemTimeAsFileTime", (SYSCALL)0, 0 },
+#endif
+
+#define osGetSystemTimeAsFileTime ((VOID(WINAPI*)( \
+ LPFILETIME))aSyscall[30].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "GetTempPathA", (SYSCALL)GetTempPathA, 0 },
+#else
+ { "GetTempPathA", (SYSCALL)0, 0 },
+#endif
+
+#define osGetTempPathA ((DWORD(WINAPI*)(DWORD,LPSTR))aSyscall[31].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "GetTempPathW", (SYSCALL)GetTempPathW, 0 },
+#else
+ { "GetTempPathW", (SYSCALL)0, 0 },
+#endif
+
+#define osGetTempPathW ((DWORD(WINAPI*)(DWORD,LPWSTR))aSyscall[32].pCurrent)
+
+ { "GetTickCount", (SYSCALL)GetTickCount, 0 },
+
+#define osGetTickCount ((DWORD(WINAPI*)(VOID))aSyscall[33].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "GetVersionExA", (SYSCALL)GetVersionExA, 0 },
+#else
+ { "GetVersionExA", (SYSCALL)0, 0 },
+#endif
+
+#define osGetVersionExA ((BOOL(WINAPI*)( \
+ LPOSVERSIONINFOA))aSyscall[34].pCurrent)
+
+ { "HeapAlloc", (SYSCALL)HeapAlloc, 0 },
+
+#define osHeapAlloc ((LPVOID(WINAPI*)(HANDLE,DWORD, \
+ SIZE_T))aSyscall[35].pCurrent)
+
+ { "HeapCreate", (SYSCALL)HeapCreate, 0 },
+
+#define osHeapCreate ((HANDLE(WINAPI*)(DWORD,SIZE_T, \
+ SIZE_T))aSyscall[36].pCurrent)
+
+ { "HeapDestroy", (SYSCALL)HeapDestroy, 0 },
+
+#define osHeapDestroy ((BOOL(WINAPI*)(HANDLE))aSyscall[37].pCurrent)
+
+ { "HeapFree", (SYSCALL)HeapFree, 0 },
+
+#define osHeapFree ((BOOL(WINAPI*)(HANDLE,DWORD,LPVOID))aSyscall[38].pCurrent)
+
+ { "HeapReAlloc", (SYSCALL)HeapReAlloc, 0 },
+
+#define osHeapReAlloc ((LPVOID(WINAPI*)(HANDLE,DWORD,LPVOID, \
+ SIZE_T))aSyscall[39].pCurrent)
+
+ { "HeapSize", (SYSCALL)HeapSize, 0 },
+
+#define osHeapSize ((SIZE_T(WINAPI*)(HANDLE,DWORD, \
+ LPCVOID))aSyscall[40].pCurrent)
+
+ { "HeapValidate", (SYSCALL)HeapValidate, 0 },
+
+#define osHeapValidate ((BOOL(WINAPI*)(HANDLE,DWORD, \
+ LPCVOID))aSyscall[41].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "LoadLibraryA", (SYSCALL)LoadLibraryA, 0 },
+#else
+ { "LoadLibraryA", (SYSCALL)0, 0 },
+#endif
+
+#define osLoadLibraryA ((HMODULE(WINAPI*)(LPCSTR))aSyscall[42].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "LoadLibraryW", (SYSCALL)LoadLibraryW, 0 },
+#else
+ { "LoadLibraryW", (SYSCALL)0, 0 },
+#endif
+
+#define osLoadLibraryW ((HMODULE(WINAPI*)(LPCWSTR))aSyscall[43].pCurrent)
+
+ { "LocalFree", (SYSCALL)LocalFree, 0 },
+
+#define osLocalFree ((HLOCAL(WINAPI*)(HLOCAL))aSyscall[44].pCurrent)
+
+#if !SQLITE_OS_WINCE
+ { "LockFile", (SYSCALL)LockFile, 0 },
+
+#define osLockFile ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
+ DWORD))aSyscall[45].pCurrent)
+#else
+ { "LockFile", (SYSCALL)0, 0 },
+#endif
+
+#if !SQLITE_OS_WINCE
+ { "LockFileEx", (SYSCALL)LockFileEx, 0 },
+
+#define osLockFileEx ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD,DWORD, \
+ LPOVERLAPPED))aSyscall[46].pCurrent)
+#else
+ { "LockFileEx", (SYSCALL)0, 0 },
+#endif
+
+ { "MapViewOfFile", (SYSCALL)MapViewOfFile, 0 },
+
+#define osMapViewOfFile ((LPVOID(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
+ SIZE_T))aSyscall[47].pCurrent)
+
+ { "MultiByteToWideChar", (SYSCALL)MultiByteToWideChar, 0 },
+
+#define osMultiByteToWideChar ((int(WINAPI*)(UINT,DWORD,LPCSTR,int,LPWSTR, \
+ int))aSyscall[48].pCurrent)
+
+ { "QueryPerformanceCounter", (SYSCALL)QueryPerformanceCounter, 0 },
+
+#define osQueryPerformanceCounter ((BOOL(WINAPI*)( \
+ LARGE_INTEGER*))aSyscall[49].pCurrent)
+
+ { "ReadFile", (SYSCALL)ReadFile, 0 },
+
+#define osReadFile ((BOOL(WINAPI*)(HANDLE,LPVOID,DWORD,LPDWORD, \
+ LPOVERLAPPED))aSyscall[50].pCurrent)
+
+ { "SetEndOfFile", (SYSCALL)SetEndOfFile, 0 },
+
+#define osSetEndOfFile ((BOOL(WINAPI*)(HANDLE))aSyscall[51].pCurrent)
+
+ { "SetFilePointer", (SYSCALL)SetFilePointer, 0 },
+
+#define osSetFilePointer ((DWORD(WINAPI*)(HANDLE,LONG,PLONG, \
+ DWORD))aSyscall[52].pCurrent)
+
+ { "Sleep", (SYSCALL)Sleep, 0 },
+
+#define osSleep ((VOID(WINAPI*)(DWORD))aSyscall[53].pCurrent)
+
+ { "SystemTimeToFileTime", (SYSCALL)SystemTimeToFileTime, 0 },
+
+#define osSystemTimeToFileTime ((BOOL(WINAPI*)(CONST SYSTEMTIME*, \
+ LPFILETIME))aSyscall[54].pCurrent)
+
+#if !SQLITE_OS_WINCE
+ { "UnlockFile", (SYSCALL)UnlockFile, 0 },
+
+#define osUnlockFile ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
+ DWORD))aSyscall[55].pCurrent)
+#else
+ { "UnlockFile", (SYSCALL)0, 0 },
+#endif
+
+#if !SQLITE_OS_WINCE
+ { "UnlockFileEx", (SYSCALL)UnlockFileEx, 0 },
+
+#define osUnlockFileEx ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
+ LPOVERLAPPED))aSyscall[56].pCurrent)
+#else
+ { "UnlockFileEx", (SYSCALL)0, 0 },
+#endif
+
+ { "UnmapViewOfFile", (SYSCALL)UnmapViewOfFile, 0 },
+
+#define osUnmapViewOfFile ((BOOL(WINAPI*)(LPCVOID))aSyscall[57].pCurrent)
+
+ { "WideCharToMultiByte", (SYSCALL)WideCharToMultiByte, 0 },
+
+#define osWideCharToMultiByte ((int(WINAPI*)(UINT,DWORD,LPCWSTR,int,LPSTR,int, \
+ LPCSTR,LPBOOL))aSyscall[58].pCurrent)
+
+ { "WriteFile", (SYSCALL)WriteFile, 0 },
+
+#define osWriteFile ((BOOL(WINAPI*)(HANDLE,LPCVOID,DWORD,LPDWORD, \
+ LPOVERLAPPED))aSyscall[59].pCurrent)
+
+}; /* End of the overrideable system calls */
+
+/*
+** This is the xSetSystemCall() method of sqlite3_vfs for all of the
+** "win32" VFSes. Return SQLITE_OK opon successfully updating the
+** system call pointer, or SQLITE_NOTFOUND if there is no configurable
+** system call named zName.
+*/
+static int winSetSystemCall(
+ sqlite3_vfs *pNotUsed, /* The VFS pointer. Not used */
+ const char *zName, /* Name of system call to override */
+ sqlite3_syscall_ptr pNewFunc /* Pointer to new system call value */
+){
+ unsigned int i;
+ int rc = SQLITE_NOTFOUND;
+
+ UNUSED_PARAMETER(pNotUsed);
+ if( zName==0 ){
+ /* If no zName is given, restore all system calls to their default
+ ** settings and return NULL
+ */
+ rc = SQLITE_OK;
+ for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
+ if( aSyscall[i].pDefault ){
+ aSyscall[i].pCurrent = aSyscall[i].pDefault;
+ }
+ }
+ }else{
+ /* If zName is specified, operate on only the one system call
+ ** specified.
+ */
+ for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
+ if( strcmp(zName, aSyscall[i].zName)==0 ){
+ if( aSyscall[i].pDefault==0 ){
+ aSyscall[i].pDefault = aSyscall[i].pCurrent;
+ }
+ rc = SQLITE_OK;
+ if( pNewFunc==0 ) pNewFunc = aSyscall[i].pDefault;
+ aSyscall[i].pCurrent = pNewFunc;
+ break;
+ }
+ }
+ }
+ return rc;
+}
+
+/*
+** Return the value of a system call. Return NULL if zName is not a
+** recognized system call name. NULL is also returned if the system call
+** is currently undefined.
+*/
+static sqlite3_syscall_ptr winGetSystemCall(
+ sqlite3_vfs *pNotUsed,
+ const char *zName
+){
+ unsigned int i;
+
+ UNUSED_PARAMETER(pNotUsed);
+ for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
+ if( strcmp(zName, aSyscall[i].zName)==0 ) return aSyscall[i].pCurrent;
+ }
+ return 0;
+}
+
+/*
+** Return the name of the first system call after zName. If zName==NULL
+** then return the name of the first system call. Return NULL if zName
+** is the last system call or if zName is not the name of a valid
+** system call.
+*/
+static const char *winNextSystemCall(sqlite3_vfs *p, const char *zName){
+ int i = -1;
+
+ UNUSED_PARAMETER(p);
+ if( zName ){
+ for(i=0; i<ArraySize(aSyscall)-1; i++){
+ if( strcmp(zName, aSyscall[i].zName)==0 ) break;
+ }
+ }
+ for(i++; i<ArraySize(aSyscall); i++){
+ if( aSyscall[i].pCurrent!=0 ) return aSyscall[i].zName;
+ }
+ return 0;
+}
+
+/*
** Return true (non-zero) if we are running under WinNT, Win2K, WinXP,
** or WinCE. Return false (zero) for Win95, Win98, or WinME.
**
@@ -29797,105 +32710,302 @@
#else
static int isNT(void){
if( sqlite3_os_type==0 ){
- OSVERSIONINFO sInfo;
+ OSVERSIONINFOA sInfo;
sInfo.dwOSVersionInfoSize = sizeof(sInfo);
- GetVersionEx(&sInfo);
+ osGetVersionExA(&sInfo);
sqlite3_os_type = sInfo.dwPlatformId==VER_PLATFORM_WIN32_NT ? 2 : 1;
}
return sqlite3_os_type==2;
}
#endif /* SQLITE_OS_WINCE */
+#ifdef SQLITE_WIN32_MALLOC
/*
-** Convert a UTF-8 string to microsoft unicode (UTF-16?).
+** Allocate nBytes of memory.
+*/
+static void *winMemMalloc(int nBytes){
+ HANDLE hHeap;
+ void *p;
+
+ winMemAssertMagic();
+ hHeap = winMemGetHeap();
+ assert( hHeap!=0 );
+ assert( hHeap!=INVALID_HANDLE_VALUE );
+#ifdef SQLITE_WIN32_MALLOC_VALIDATE
+ assert ( osHeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) );
+#endif
+ assert( nBytes>=0 );
+ p = osHeapAlloc(hHeap, SQLITE_WIN32_HEAP_FLAGS, (SIZE_T)nBytes);
+ if( !p ){
+ sqlite3_log(SQLITE_NOMEM, "failed to HeapAlloc %u bytes (%d), heap=%p",
+ nBytes, osGetLastError(), (void*)hHeap);
+ }
+ return p;
+}
+
+/*
+** Free memory.
+*/
+static void winMemFree(void *pPrior){
+ HANDLE hHeap;
+
+ winMemAssertMagic();
+ hHeap = winMemGetHeap();
+ assert( hHeap!=0 );
+ assert( hHeap!=INVALID_HANDLE_VALUE );
+#ifdef SQLITE_WIN32_MALLOC_VALIDATE
+ assert ( osHeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior) );
+#endif
+ if( !pPrior ) return; /* Passing NULL to HeapFree is undefined. */
+ if( !osHeapFree(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior) ){
+ sqlite3_log(SQLITE_NOMEM, "failed to HeapFree block %p (%d), heap=%p",
+ pPrior, osGetLastError(), (void*)hHeap);
+ }
+}
+
+/*
+** Change the size of an existing memory allocation
+*/
+static void *winMemRealloc(void *pPrior, int nBytes){
+ HANDLE hHeap;
+ void *p;
+
+ winMemAssertMagic();
+ hHeap = winMemGetHeap();
+ assert( hHeap!=0 );
+ assert( hHeap!=INVALID_HANDLE_VALUE );
+#ifdef SQLITE_WIN32_MALLOC_VALIDATE
+ assert ( osHeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior) );
+#endif
+ assert( nBytes>=0 );
+ if( !pPrior ){
+ p = osHeapAlloc(hHeap, SQLITE_WIN32_HEAP_FLAGS, (SIZE_T)nBytes);
+ }else{
+ p = osHeapReAlloc(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior, (SIZE_T)nBytes);
+ }
+ if( !p ){
+ sqlite3_log(SQLITE_NOMEM, "failed to %s %u bytes (%d), heap=%p",
+ pPrior ? "HeapReAlloc" : "HeapAlloc", nBytes, osGetLastError(),
+ (void*)hHeap);
+ }
+ return p;
+}
+
+/*
+** Return the size of an outstanding allocation, in bytes.
+*/
+static int winMemSize(void *p){
+ HANDLE hHeap;
+ SIZE_T n;
+
+ winMemAssertMagic();
+ hHeap = winMemGetHeap();
+ assert( hHeap!=0 );
+ assert( hHeap!=INVALID_HANDLE_VALUE );
+#ifdef SQLITE_WIN32_MALLOC_VALIDATE
+ assert ( osHeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) );
+#endif
+ if( !p ) return 0;
+ n = osHeapSize(hHeap, SQLITE_WIN32_HEAP_FLAGS, p);
+ if( n==(SIZE_T)-1 ){
+ sqlite3_log(SQLITE_NOMEM, "failed to HeapSize block %p (%d), heap=%p",
+ p, osGetLastError(), (void*)hHeap);
+ return 0;
+ }
+ return (int)n;
+}
+
+/*
+** Round up a request size to the next valid allocation size.
+*/
+static int winMemRoundup(int n){
+ return n;
+}
+
+/*
+** Initialize this module.
+*/
+static int winMemInit(void *pAppData){
+ winMemData *pWinMemData = (winMemData *)pAppData;
+
+ if( !pWinMemData ) return SQLITE_ERROR;
+ assert( pWinMemData->magic==WINMEM_MAGIC );
+ if( !pWinMemData->hHeap ){
+ pWinMemData->hHeap = osHeapCreate(SQLITE_WIN32_HEAP_FLAGS,
+ SQLITE_WIN32_HEAP_INIT_SIZE,
+ SQLITE_WIN32_HEAP_MAX_SIZE);
+ if( !pWinMemData->hHeap ){
+ sqlite3_log(SQLITE_NOMEM,
+ "failed to HeapCreate (%d), flags=%u, initSize=%u, maxSize=%u",
+ osGetLastError(), SQLITE_WIN32_HEAP_FLAGS,
+ SQLITE_WIN32_HEAP_INIT_SIZE, SQLITE_WIN32_HEAP_MAX_SIZE);
+ return SQLITE_NOMEM;
+ }
+ pWinMemData->bOwned = TRUE;
+ }
+ assert( pWinMemData->hHeap!=0 );
+ assert( pWinMemData->hHeap!=INVALID_HANDLE_VALUE );
+#ifdef SQLITE_WIN32_MALLOC_VALIDATE
+ assert( osHeapValidate(pWinMemData->hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) );
+#endif
+ return SQLITE_OK;
+}
+
+/*
+** Deinitialize this module.
+*/
+static void winMemShutdown(void *pAppData){
+ winMemData *pWinMemData = (winMemData *)pAppData;
+
+ if( !pWinMemData ) return;
+ if( pWinMemData->hHeap ){
+ assert( pWinMemData->hHeap!=INVALID_HANDLE_VALUE );
+#ifdef SQLITE_WIN32_MALLOC_VALIDATE
+ assert( osHeapValidate(pWinMemData->hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) );
+#endif
+ if( pWinMemData->bOwned ){
+ if( !osHeapDestroy(pWinMemData->hHeap) ){
+ sqlite3_log(SQLITE_NOMEM, "failed to HeapDestroy (%d), heap=%p",
+ osGetLastError(), (void*)pWinMemData->hHeap);
+ }
+ pWinMemData->bOwned = FALSE;
+ }
+ pWinMemData->hHeap = NULL;
+ }
+}
+
+/*
+** Populate the low-level memory allocation function pointers in
+** sqlite3GlobalConfig.m with pointers to the routines in this file. The
+** arguments specify the block of memory to manage.
+**
+** This routine is only called by sqlite3_config(), and therefore
+** is not required to be threadsafe (it is not).
+*/
+SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetWin32(void){
+ static const sqlite3_mem_methods winMemMethods = {
+ winMemMalloc,
+ winMemFree,
+ winMemRealloc,
+ winMemSize,
+ winMemRoundup,
+ winMemInit,
+ winMemShutdown,
+ &win_mem_data
+ };
+ return &winMemMethods;
+}
+
+SQLITE_PRIVATE void sqlite3MemSetDefault(void){
+ sqlite3_config(SQLITE_CONFIG_MALLOC, sqlite3MemGetWin32());
+}
+#endif /* SQLITE_WIN32_MALLOC */
+
+/*
+** Convert a UTF-8 string to Microsoft Unicode (UTF-16?).
**
** Space to hold the returned string is obtained from malloc.
*/
-static WCHAR *utf8ToUnicode(const char *zFilename){
+static LPWSTR utf8ToUnicode(const char *zFilename){
int nChar;
- WCHAR *zWideFilename;
+ LPWSTR zWideFilename;
- nChar = MultiByteToWideChar(CP_UTF8, 0, zFilename, -1, NULL, 0);
- zWideFilename = malloc( nChar*sizeof(zWideFilename[0]) );
+ nChar = osMultiByteToWideChar(CP_UTF8, 0, zFilename, -1, NULL, 0);
+ if( nChar==0 ){
+ return 0;
+ }
+ zWideFilename = sqlite3_malloc( nChar*sizeof(zWideFilename[0]) );
if( zWideFilename==0 ){
return 0;
}
- nChar = MultiByteToWideChar(CP_UTF8, 0, zFilename, -1, zWideFilename, nChar);
+ nChar = osMultiByteToWideChar(CP_UTF8, 0, zFilename, -1, zWideFilename,
+ nChar);
if( nChar==0 ){
- free(zWideFilename);
+ sqlite3_free(zWideFilename);
zWideFilename = 0;
}
return zWideFilename;
}
/*
-** Convert microsoft unicode to UTF-8. Space to hold the returned string is
-** obtained from malloc().
+** Convert Microsoft Unicode to UTF-8. Space to hold the returned string is
+** obtained from sqlite3_malloc().
*/
-static char *unicodeToUtf8(const WCHAR *zWideFilename){
+static char *unicodeToUtf8(LPCWSTR zWideFilename){
int nByte;
char *zFilename;
- nByte = WideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, 0, 0, 0, 0);
- zFilename = malloc( nByte );
+ nByte = osWideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, 0, 0, 0, 0);
+ if( nByte == 0 ){
+ return 0;
+ }
+ zFilename = sqlite3_malloc( nByte );
if( zFilename==0 ){
return 0;
}
- nByte = WideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, zFilename, nByte,
- 0, 0);
+ nByte = osWideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, zFilename, nByte,
+ 0, 0);
if( nByte == 0 ){
- free(zFilename);
+ sqlite3_free(zFilename);
zFilename = 0;
}
return zFilename;
}
/*
-** Convert an ansi string to microsoft unicode, based on the
+** Convert an ANSI string to Microsoft Unicode, based on the
** current codepage settings for file apis.
**
** Space to hold the returned string is obtained
-** from malloc.
+** from sqlite3_malloc.
*/
-static WCHAR *mbcsToUnicode(const char *zFilename){
+static LPWSTR mbcsToUnicode(const char *zFilename){
int nByte;
- WCHAR *zMbcsFilename;
- int codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
+ LPWSTR zMbcsFilename;
+ int codepage = osAreFileApisANSI() ? CP_ACP : CP_OEMCP;
- nByte = MultiByteToWideChar(codepage, 0, zFilename, -1, NULL,0)*sizeof(WCHAR);
- zMbcsFilename = malloc( nByte*sizeof(zMbcsFilename[0]) );
+ nByte = osMultiByteToWideChar(codepage, 0, zFilename, -1, NULL,
+ 0)*sizeof(WCHAR);
+ if( nByte==0 ){
+ return 0;
+ }
+ zMbcsFilename = sqlite3_malloc( nByte*sizeof(zMbcsFilename[0]) );
if( zMbcsFilename==0 ){
return 0;
}
- nByte = MultiByteToWideChar(codepage, 0, zFilename, -1, zMbcsFilename, nByte);
+ nByte = osMultiByteToWideChar(codepage, 0, zFilename, -1, zMbcsFilename,
+ nByte);
if( nByte==0 ){
- free(zMbcsFilename);
+ sqlite3_free(zMbcsFilename);
zMbcsFilename = 0;
}
return zMbcsFilename;
}
/*
-** Convert microsoft unicode to multibyte character string, based on the
-** user's Ansi codepage.
+** Convert Microsoft Unicode to multi-byte character string, based on the
+** user's ANSI codepage.
**
** Space to hold the returned string is obtained from
-** malloc().
+** sqlite3_malloc().
*/
-static char *unicodeToMbcs(const WCHAR *zWideFilename){
+static char *unicodeToMbcs(LPCWSTR zWideFilename){
int nByte;
char *zFilename;
- int codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
+ int codepage = osAreFileApisANSI() ? CP_ACP : CP_OEMCP;
- nByte = WideCharToMultiByte(codepage, 0, zWideFilename, -1, 0, 0, 0, 0);
- zFilename = malloc( nByte );
+ nByte = osWideCharToMultiByte(codepage, 0, zWideFilename, -1, 0, 0, 0, 0);
+ if( nByte == 0 ){
+ return 0;
+ }
+ zFilename = sqlite3_malloc( nByte );
if( zFilename==0 ){
return 0;
}
- nByte = WideCharToMultiByte(codepage, 0, zWideFilename, -1, zFilename, nByte,
- 0, 0);
+ nByte = osWideCharToMultiByte(codepage, 0, zWideFilename, -1, zFilename,
+ nByte, 0, 0);
if( nByte == 0 ){
- free(zFilename);
+ sqlite3_free(zFilename);
zFilename = 0;
}
return zFilename;
@@ -29903,46 +33013,210 @@
/*
** Convert multibyte character string to UTF-8. Space to hold the
-** returned string is obtained from malloc().
+** returned string is obtained from sqlite3_malloc().
*/
SQLITE_API char *sqlite3_win32_mbcs_to_utf8(const char *zFilename){
char *zFilenameUtf8;
- WCHAR *zTmpWide;
+ LPWSTR zTmpWide;
zTmpWide = mbcsToUnicode(zFilename);
if( zTmpWide==0 ){
return 0;
}
zFilenameUtf8 = unicodeToUtf8(zTmpWide);
- free(zTmpWide);
+ sqlite3_free(zTmpWide);
return zFilenameUtf8;
}
/*
** Convert UTF-8 to multibyte character string. Space to hold the
-** returned string is obtained from malloc().
+** returned string is obtained from sqlite3_malloc().
*/
-static char *utf8ToMbcs(const char *zFilename){
+SQLITE_API char *sqlite3_win32_utf8_to_mbcs(const char *zFilename){
char *zFilenameMbcs;
- WCHAR *zTmpWide;
+ LPWSTR zTmpWide;
zTmpWide = utf8ToUnicode(zFilename);
if( zTmpWide==0 ){
return 0;
}
zFilenameMbcs = unicodeToMbcs(zTmpWide);
- free(zTmpWide);
+ sqlite3_free(zTmpWide);
return zFilenameMbcs;
}
+
+/*
+** The return value of getLastErrorMsg
+** is zero if the error message fits in the buffer, or non-zero
+** otherwise (if the message was truncated).
+*/
+static int getLastErrorMsg(DWORD lastErrno, int nBuf, char *zBuf){
+ /* FormatMessage returns 0 on failure. Otherwise it
+ ** returns the number of TCHARs written to the output
+ ** buffer, excluding the terminating null char.
+ */
+ DWORD dwLen = 0;
+ char *zOut = 0;
+
+ if( isNT() ){
+ LPWSTR zTempWide = NULL;
+ dwLen = osFormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER |
+ FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_IGNORE_INSERTS,
+ NULL,
+ lastErrno,
+ 0,
+ (LPWSTR) &zTempWide,
+ 0,
+ 0);
+ if( dwLen > 0 ){
+ /* allocate a buffer and convert to UTF8 */
+ sqlite3BeginBenignMalloc();
+ zOut = unicodeToUtf8(zTempWide);
+ sqlite3EndBenignMalloc();
+ /* free the system buffer allocated by FormatMessage */
+ osLocalFree(zTempWide);
+ }
+/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
+** Since the ANSI version of these Windows API do not exist for WINCE,
+** it's important to not reference them for WINCE builds.
+*/
+#if SQLITE_OS_WINCE==0
+ }else{
+ char *zTemp = NULL;
+ dwLen = osFormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER |
+ FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_IGNORE_INSERTS,
+ NULL,
+ lastErrno,
+ 0,
+ (LPSTR) &zTemp,
+ 0,
+ 0);
+ if( dwLen > 0 ){
+ /* allocate a buffer and convert to UTF8 */
+ sqlite3BeginBenignMalloc();
+ zOut = sqlite3_win32_mbcs_to_utf8(zTemp);
+ sqlite3EndBenignMalloc();
+ /* free the system buffer allocated by FormatMessage */
+ osLocalFree(zTemp);
+ }
+#endif
+ }
+ if( 0 == dwLen ){
+ sqlite3_snprintf(nBuf, zBuf, "OsError 0x%x (%u)", lastErrno, lastErrno);
+ }else{
+ /* copy a maximum of nBuf chars to output buffer */
+ sqlite3_snprintf(nBuf, zBuf, "%s", zOut);
+ /* free the UTF8 buffer */
+ sqlite3_free(zOut);
+ }
+ return 0;
+}
+
+/*
+**
+** This function - winLogErrorAtLine() - is only ever called via the macro
+** winLogError().
+**
+** This routine is invoked after an error occurs in an OS function.
+** It logs a message using sqlite3_log() containing the current value of
+** error code and, if possible, the human-readable equivalent from
+** FormatMessage.
+**
+** The first argument passed to the macro should be the error code that
+** will be returned to SQLite (e.g. SQLITE_IOERR_DELETE, SQLITE_CANTOPEN).
+** The two subsequent arguments should be the name of the OS function that
+** failed and the the associated file-system path, if any.
+*/
+#define winLogError(a,b,c,d) winLogErrorAtLine(a,b,c,d,__LINE__)
+static int winLogErrorAtLine(
+ int errcode, /* SQLite error code */
+ DWORD lastErrno, /* Win32 last error */
+ const char *zFunc, /* Name of OS function that failed */
+ const char *zPath, /* File path associated with error */
+ int iLine /* Source line number where error occurred */
+){
+ char zMsg[500]; /* Human readable error text */
+ int i; /* Loop counter */
+
+ zMsg[0] = 0;
+ getLastErrorMsg(lastErrno, sizeof(zMsg), zMsg);
+ assert( errcode!=SQLITE_OK );
+ if( zPath==0 ) zPath = "";
+ for(i=0; zMsg[i] && zMsg[i]!='\r' && zMsg[i]!='\n'; i++){}
+ zMsg[i] = 0;
+ sqlite3_log(errcode,
+ "os_win.c:%d: (%d) %s(%s) - %s",
+ iLine, lastErrno, zFunc, zPath, zMsg
+ );
+
+ return errcode;
+}
+
+/*
+** The number of times that a ReadFile(), WriteFile(), and DeleteFile()
+** will be retried following a locking error - probably caused by
+** antivirus software. Also the initial delay before the first retry.
+** The delay increases linearly with each retry.
+*/
+#ifndef SQLITE_WIN32_IOERR_RETRY
+# define SQLITE_WIN32_IOERR_RETRY 10
+#endif
+#ifndef SQLITE_WIN32_IOERR_RETRY_DELAY
+# define SQLITE_WIN32_IOERR_RETRY_DELAY 25
+#endif
+static int win32IoerrRetry = SQLITE_WIN32_IOERR_RETRY;
+static int win32IoerrRetryDelay = SQLITE_WIN32_IOERR_RETRY_DELAY;
+
+/*
+** If a ReadFile() or WriteFile() error occurs, invoke this routine
+** to see if it should be retried. Return TRUE to retry. Return FALSE
+** to give up with an error.
+*/
+static int retryIoerr(int *pnRetry, DWORD *pError){
+ DWORD e = osGetLastError();
+ if( *pnRetry>=win32IoerrRetry ){
+ if( pError ){
+ *pError = e;
+ }
+ return 0;
+ }
+ if( e==ERROR_ACCESS_DENIED ||
+ e==ERROR_LOCK_VIOLATION ||
+ e==ERROR_SHARING_VIOLATION ){
+ osSleep(win32IoerrRetryDelay*(1+*pnRetry));
+ ++*pnRetry;
+ return 1;
+ }
+ if( pError ){
+ *pError = e;
+ }
+ return 0;
+}
+
+/*
+** Log a I/O error retry episode.
+*/
+static void logIoerr(int nRetry){
+ if( nRetry ){
+ sqlite3_log(SQLITE_IOERR,
+ "delayed %dms for lock/sharing conflict",
+ win32IoerrRetryDelay*nRetry*(nRetry+1)/2
+ );
+ }
+}
+
#if SQLITE_OS_WINCE
/*************************************************************************
** This section contains code for WinCE only.
*/
/*
-** WindowsCE does not have a localtime() function. So create a
+** Windows CE does not have a localtime() function. So create a
** substitute.
*/
+/* #include <time.h> */
struct tm *__cdecl localtime(const time_t *t)
{
static struct tm y;
@@ -29953,8 +33227,8 @@
t64 = (t64 + 11644473600)*10000000;
uTm.dwLowDateTime = (DWORD)(t64 & 0xFFFFFFFF);
uTm.dwHighDateTime= (DWORD)(t64 >> 32);
- FileTimeToLocalFileTime(&uTm,&lTm);
- FileTimeToSystemTime(&lTm,&pTm);
+ osFileTimeToLocalFileTime(&uTm,&lTm);
+ osFileTimeToSystemTime(&lTm,&pTm);
y.tm_year = pTm.wYear - 1900;
y.tm_mon = pTm.wMonth - 1;
y.tm_wday = pTm.wDayOfWeek;
@@ -29965,13 +33239,6 @@
return &y;
}
-/* This will never be called, but defined to make the code compile */
-#define GetTempPathA(a,b)
-
-#define LockFile(a,b,c,d,e) winceLockFile(&a, b, c, d, e)
-#define UnlockFile(a,b,c,d,e) winceUnlockFile(&a, b, c, d, e)
-#define LockFileEx(a,b,c,d,e,f) winceLockFileEx(&a, b, c, d, e, f)
-
#define HANDLE_TO_WINFILE(a) (winFile*)&((char*)a)[-(int)offsetof(winFile,h)]
/*
@@ -29993,25 +33260,32 @@
** descriptor pFile
*/
static BOOL winceCreateLock(const char *zFilename, winFile *pFile){
- WCHAR *zTok;
- WCHAR *zName = utf8ToUnicode(zFilename);
+ LPWSTR zTok;
+ LPWSTR zName;
BOOL bInit = TRUE;
+ zName = utf8ToUnicode(zFilename);
+ if( zName==0 ){
+ /* out of memory */
+ return FALSE;
+ }
+
/* Initialize the local lockdata */
- ZeroMemory(&pFile->local, sizeof(pFile->local));
+ memset(&pFile->local, 0, sizeof(pFile->local));
/* Replace the backslashes from the filename and lowercase it
** to derive a mutex name. */
- zTok = CharLowerW(zName);
+ zTok = osCharLowerW(zName);
for (;*zTok;zTok++){
if (*zTok == '\\') *zTok = '_';
}
/* Create/open the named mutex */
- pFile->hMutex = CreateMutexW(NULL, FALSE, zName);
+ pFile->hMutex = osCreateMutexW(NULL, FALSE, zName);
if (!pFile->hMutex){
- pFile->lastErrno = GetLastError();
- free(zName);
+ pFile->lastErrno = osGetLastError();
+ winLogError(SQLITE_ERROR, pFile->lastErrno, "winceCreateLock1", zFilename);
+ sqlite3_free(zName);
return FALSE;
}
@@ -30022,27 +33296,29 @@
** case-sensitive, take advantage of that by uppercasing the mutex name
** and using that as the shared filemapping name.
*/
- CharUpperW(zName);
- pFile->hShared = CreateFileMappingW(INVALID_HANDLE_VALUE, NULL,
- PAGE_READWRITE, 0, sizeof(winceLock),
- zName);
+ osCharUpperW(zName);
+ pFile->hShared = osCreateFileMappingW(INVALID_HANDLE_VALUE, NULL,
+ PAGE_READWRITE, 0, sizeof(winceLock),
+ zName);
/* Set a flag that indicates we're the first to create the memory so it
** must be zero-initialized */
- if (GetLastError() == ERROR_ALREADY_EXISTS){
+ if (osGetLastError() == ERROR_ALREADY_EXISTS){
bInit = FALSE;
}
- free(zName);
+ sqlite3_free(zName);
/* If we succeeded in making the shared memory handle, map it. */
if (pFile->hShared){
- pFile->shared = (winceLock*)MapViewOfFile(pFile->hShared,
+ pFile->shared = (winceLock*)osMapViewOfFile(pFile->hShared,
FILE_MAP_READ|FILE_MAP_WRITE, 0, 0, sizeof(winceLock));
/* If mapping failed, close the shared memory handle and erase it */
if (!pFile->shared){
- pFile->lastErrno = GetLastError();
- CloseHandle(pFile->hShared);
+ pFile->lastErrno = osGetLastError();
+ winLogError(SQLITE_ERROR, pFile->lastErrno,
+ "winceCreateLock2", zFilename);
+ osCloseHandle(pFile->hShared);
pFile->hShared = NULL;
}
}
@@ -30050,14 +33326,14 @@
/* If shared memory could not be created, then close the mutex and fail */
if (pFile->hShared == NULL){
winceMutexRelease(pFile->hMutex);
- CloseHandle(pFile->hMutex);
+ osCloseHandle(pFile->hMutex);
pFile->hMutex = NULL;
return FALSE;
}
/* Initialize the shared memory if we're supposed to */
if (bInit) {
- ZeroMemory(pFile->shared, sizeof(winceLock));
+ memset(pFile->shared, 0, sizeof(winceLock));
}
winceMutexRelease(pFile->hMutex);
@@ -30088,18 +33364,18 @@
}
/* De-reference and close our copy of the shared memory handle */
- UnmapViewOfFile(pFile->shared);
- CloseHandle(pFile->hShared);
+ osUnmapViewOfFile(pFile->shared);
+ osCloseHandle(pFile->hShared);
/* Done with the mutex */
winceMutexRelease(pFile->hMutex);
- CloseHandle(pFile->hMutex);
+ osCloseHandle(pFile->hMutex);
pFile->hMutex = NULL;
}
}
/*
-** An implementation of the LockFile() API of windows for wince
+** An implementation of the LockFile() API of Windows for CE
*/
static BOOL winceLockFile(
HANDLE *phFile,
@@ -30163,7 +33439,7 @@
}
/*
-** An implementation of the UnlockFile API of windows for wince
+** An implementation of the UnlockFile API of Windows for CE
*/
static BOOL winceUnlockFile(
HANDLE *phFile,
@@ -30225,7 +33501,7 @@
}
/*
-** An implementation of the LockFileEx() API of windows for wince
+** An implementation of the LockFileEx() API of Windows for CE
*/
static BOOL winceLockFileEx(
HANDLE *phFile,
@@ -30258,7 +33534,7 @@
******************************************************************************/
/*
-** Some microsoft compilers lack this definition.
+** Some Microsoft compilers lack this definition.
*/
#ifndef INVALID_SET_FILE_POINTER
# define INVALID_SET_FILE_POINTER ((DWORD)-1)
@@ -30273,6 +33549,7 @@
LONG upperBits; /* Most sig. 32 bits of new offset */
LONG lowerBits; /* Least sig. 32 bits of new offset */
DWORD dwRet; /* Value returned by SetFilePointer() */
+ DWORD lastErrno; /* Value returned by GetLastError() */
upperBits = (LONG)((iOffset>>32) & 0x7fffffff);
lowerBits = (LONG)(iOffset & 0xffffffff);
@@ -30284,9 +33561,13 @@
** whether an error has actually occured, it is also necessary to call
** GetLastError().
*/
- dwRet = SetFilePointer(pFile->h, lowerBits, &upperBits, FILE_BEGIN);
- if( (dwRet==INVALID_SET_FILE_POINTER && GetLastError()!=NO_ERROR) ){
- pFile->lastErrno = GetLastError();
+ dwRet = osSetFilePointer(pFile->h, lowerBits, &upperBits, FILE_BEGIN);
+
+ if( (dwRet==INVALID_SET_FILE_POINTER
+ && ((lastErrno = osGetLastError())!=NO_ERROR)) ){
+ pFile->lastErrno = lastErrno;
+ winLogError(SQLITE_IOERR_SEEK, pFile->lastErrno,
+ "seekWinFile", pFile->zPath);
return 1;
}
@@ -30297,7 +33578,7 @@
** Close a file.
**
** It is reported that an attempt to close a handle might sometimes
-** fail. This is a very unreasonable result, but windows is notorious
+** fail. This is a very unreasonable result, but Windows is notorious
** for being unreasonable so I do not doubt that it might happen. If
** the close fails, we pause for 100 milliseconds and try again. As
** many as MX_CLOSE_ATTEMPT attempts to close the handle are made before
@@ -30312,27 +33593,29 @@
assert( pFile->pShm==0 );
OSTRACE(("CLOSE %d\n", pFile->h));
do{
- rc = CloseHandle(pFile->h);
+ rc = osCloseHandle(pFile->h);
/* SimulateIOError( rc=0; cnt=MX_CLOSE_ATTEMPT; ); */
- }while( rc==0 && ++cnt < MX_CLOSE_ATTEMPT && (Sleep(100), 1) );
+ }while( rc==0 && ++cnt < MX_CLOSE_ATTEMPT && (osSleep(100), 1) );
#if SQLITE_OS_WINCE
#define WINCE_DELETION_ATTEMPTS 3
winceDestroyLock(pFile);
if( pFile->zDeleteOnClose ){
int cnt = 0;
while(
- DeleteFileW(pFile->zDeleteOnClose)==0
- && GetFileAttributesW(pFile->zDeleteOnClose)!=0xffffffff
+ osDeleteFileW(pFile->zDeleteOnClose)==0
+ && osGetFileAttributesW(pFile->zDeleteOnClose)!=0xffffffff
&& cnt++ < WINCE_DELETION_ATTEMPTS
){
- Sleep(100); /* Wait a little before trying again */
+ osSleep(100); /* Wait a little before trying again */
}
- free(pFile->zDeleteOnClose);
+ sqlite3_free(pFile->zDeleteOnClose);
}
#endif
OSTRACE(("CLOSE %d %s\n", pFile->h, rc ? "ok" : "failed"));
OpenCounter(-1);
- return rc ? SQLITE_OK : SQLITE_IOERR;
+ return rc ? SQLITE_OK
+ : winLogError(SQLITE_IOERR_CLOSE, osGetLastError(),
+ "winClose", pFile->zPath);
}
/*
@@ -30348,6 +33631,7 @@
){
winFile *pFile = (winFile*)id; /* file handle */
DWORD nRead; /* Number of bytes actually read from file */
+ int nRetry = 0; /* Number of retrys */
assert( id!=0 );
SimulateIOError(return SQLITE_IOERR_READ);
@@ -30356,10 +33640,14 @@
if( seekWinFile(pFile, offset) ){
return SQLITE_FULL;
}
- if( !ReadFile(pFile->h, pBuf, amt, &nRead, 0) ){
- pFile->lastErrno = GetLastError();
- return SQLITE_IOERR_READ;
+ while( !osReadFile(pFile->h, pBuf, amt, &nRead, 0) ){
+ DWORD lastErrno;
+ if( retryIoerr(&nRetry, &lastErrno) ) continue;
+ pFile->lastErrno = lastErrno;
+ return winLogError(SQLITE_IOERR_READ, pFile->lastErrno,
+ "winRead", pFile->zPath);
}
+ logIoerr(nRetry);
if( nRead<(DWORD)amt ){
/* Unread parts of the buffer must be zero-filled */
memset(&((char*)pBuf)[nRead], 0, amt-nRead);
@@ -30381,6 +33669,7 @@
){
int rc; /* True if error has occured, else false */
winFile *pFile = (winFile*)id; /* File handle */
+ int nRetry = 0; /* Number of retries */
assert( amt>0 );
assert( pFile );
@@ -30394,22 +33683,32 @@
u8 *aRem = (u8 *)pBuf; /* Data yet to be written */
int nRem = amt; /* Number of bytes yet to be written */
DWORD nWrite; /* Bytes written by each WriteFile() call */
+ DWORD lastErrno = NO_ERROR; /* Value returned by GetLastError() */
- while( nRem>0 && WriteFile(pFile->h, aRem, nRem, &nWrite, 0) && nWrite>0 ){
+ while( nRem>0 ){
+ if( !osWriteFile(pFile->h, aRem, nRem, &nWrite, 0) ){
+ if( retryIoerr(&nRetry, &lastErrno) ) continue;
+ break;
+ }
+ if( nWrite<=0 ) break;
aRem += nWrite;
nRem -= nWrite;
}
if( nRem>0 ){
- pFile->lastErrno = GetLastError();
+ pFile->lastErrno = lastErrno;
rc = 1;
}
}
if( rc ){
- if( pFile->lastErrno==ERROR_HANDLE_DISK_FULL ){
+ if( ( pFile->lastErrno==ERROR_HANDLE_DISK_FULL )
+ || ( pFile->lastErrno==ERROR_DISK_FULL )){
return SQLITE_FULL;
}
- return SQLITE_IOERR_WRITE;
+ return winLogError(SQLITE_IOERR_WRITE, pFile->lastErrno,
+ "winWrite", pFile->zPath);
+ }else{
+ logIoerr(nRetry);
}
return SQLITE_OK;
}
@@ -30431,16 +33730,18 @@
** actual file size after the operation may be larger than the requested
** size).
*/
- if( pFile->szChunk ){
+ if( pFile->szChunk>0 ){
nByte = ((nByte + pFile->szChunk - 1)/pFile->szChunk) * pFile->szChunk;
}
/* SetEndOfFile() returns non-zero when successful, or zero when it fails. */
if( seekWinFile(pFile, nByte) ){
- rc = SQLITE_IOERR_TRUNCATE;
- }else if( 0==SetEndOfFile(pFile->h) ){
- pFile->lastErrno = GetLastError();
- rc = SQLITE_IOERR_TRUNCATE;
+ rc = winLogError(SQLITE_IOERR_TRUNCATE, pFile->lastErrno,
+ "winTruncate1", pFile->zPath);
+ }else if( 0==osSetEndOfFile(pFile->h) ){
+ pFile->lastErrno = osGetLastError();
+ rc = winLogError(SQLITE_IOERR_TRUNCATE, pFile->lastErrno,
+ "winTruncate2", pFile->zPath);
}
OSTRACE(("TRUNCATE %d %lld %s\n", pFile->h, nByte, rc ? "failed" : "ok"));
@@ -30460,7 +33761,18 @@
** Make sure all writes to a particular file are committed to disk.
*/
static int winSync(sqlite3_file *id, int flags){
-#if !defined(NDEBUG) || !defined(SQLITE_NO_SYNC) || defined(SQLITE_DEBUG)
+#ifndef SQLITE_NO_SYNC
+ /*
+ ** Used only when SQLITE_NO_SYNC is not defined.
+ */
+ BOOL rc;
+#endif
+#if !defined(NDEBUG) || !defined(SQLITE_NO_SYNC) || \
+ (defined(SQLITE_TEST) && defined(SQLITE_DEBUG))
+ /*
+ ** Used when SQLITE_NO_SYNC is not defined and by the assert() and/or
+ ** OSTRACE() macros.
+ */
winFile *pFile = (winFile*)id;
#else
UNUSED_PARAMETER(id);
@@ -30474,20 +33786,19 @@
OSTRACE(("SYNC %d lock=%d\n", pFile->h, pFile->locktype));
-#ifndef SQLITE_TEST
- UNUSED_PARAMETER(flags);
-#else
- if( flags & SQLITE_SYNC_FULL ){
- sqlite3_fullsync_count++;
- }
- sqlite3_sync_count++;
-#endif
-
/* Unix cannot, but some systems may return SQLITE_FULL from here. This
** line is to test that doing so does not cause any problems.
*/
SimulateDiskfullError( return SQLITE_FULL );
- SimulateIOError( return SQLITE_IOERR; );
+
+#ifndef SQLITE_TEST
+ UNUSED_PARAMETER(flags);
+#else
+ if( (flags&0x0F)==SQLITE_SYNC_FULL ){
+ sqlite3_fullsync_count++;
+ }
+ sqlite3_sync_count++;
+#endif
/* If we compiled with the SQLITE_NO_SYNC flag, then syncing is a
** no-op
@@ -30495,11 +33806,14 @@
#ifdef SQLITE_NO_SYNC
return SQLITE_OK;
#else
- if( FlushFileBuffers(pFile->h) ){
+ rc = osFlushFileBuffers(pFile->h);
+ SimulateIOError( rc=FALSE );
+ if( rc ){
return SQLITE_OK;
}else{
- pFile->lastErrno = GetLastError();
- return SQLITE_IOERR;
+ pFile->lastErrno = osGetLastError();
+ return winLogError(SQLITE_IOERR_FSYNC, pFile->lastErrno,
+ "winSync", pFile->zPath);
}
#endif
}
@@ -30511,16 +33825,17 @@
DWORD upperBits;
DWORD lowerBits;
winFile *pFile = (winFile*)id;
- DWORD error;
+ DWORD lastErrno;
assert( id!=0 );
SimulateIOError(return SQLITE_IOERR_FSTAT);
- lowerBits = GetFileSize(pFile->h, &upperBits);
+ lowerBits = osGetFileSize(pFile->h, &upperBits);
if( (lowerBits == INVALID_FILE_SIZE)
- && ((error = GetLastError()) != NO_ERROR) )
+ && ((lastErrno = osGetLastError())!=NO_ERROR) )
{
- pFile->lastErrno = error;
- return SQLITE_IOERR_FSTAT;
+ pFile->lastErrno = lastErrno;
+ return winLogError(SQLITE_IOERR_FSTAT, pFile->lastErrno,
+ "winFileSize", pFile->zPath);
}
*pSize = (((sqlite3_int64)upperBits)<<32) + lowerBits;
return SQLITE_OK;
@@ -30536,7 +33851,7 @@
/*
** Acquire a reader lock.
** Different API routines are called depending on whether or not this
-** is Win95 or WinNT.
+** is Win9x or WinNT.
*/
static int getReadLock(winFile *pFile){
int res;
@@ -30545,8 +33860,8 @@
ovlp.Offset = SHARED_FIRST;
ovlp.OffsetHigh = 0;
ovlp.hEvent = 0;
- res = LockFileEx(pFile->h, LOCKFILE_FAIL_IMMEDIATELY,
- 0, SHARED_SIZE, 0, &ovlp);
+ res = osLockFileEx(pFile->h, LOCKFILE_FAIL_IMMEDIATELY,
+ 0, SHARED_SIZE, 0, &ovlp);
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
*/
#if SQLITE_OS_WINCE==0
@@ -30554,11 +33869,12 @@
int lk;
sqlite3_randomness(sizeof(lk), &lk);
pFile->sharedLockByte = (short)((lk & 0x7fffffff)%(SHARED_SIZE - 1));
- res = LockFile(pFile->h, SHARED_FIRST+pFile->sharedLockByte, 0, 1, 0);
+ res = osLockFile(pFile->h, SHARED_FIRST+pFile->sharedLockByte, 0, 1, 0);
#endif
}
if( res == 0 ){
- pFile->lastErrno = GetLastError();
+ pFile->lastErrno = osGetLastError();
+ /* No need to log a failure to lock */
}
return res;
}
@@ -30568,17 +33884,20 @@
*/
static int unlockReadLock(winFile *pFile){
int res;
+ DWORD lastErrno;
if( isNT() ){
- res = UnlockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
+ res = osUnlockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
*/
#if SQLITE_OS_WINCE==0
}else{
- res = UnlockFile(pFile->h, SHARED_FIRST + pFile->sharedLockByte, 0, 1, 0);
+ res = osUnlockFile(pFile->h, SHARED_FIRST + pFile->sharedLockByte, 0, 1, 0);
#endif
}
- if( res == 0 ){
- pFile->lastErrno = GetLastError();
+ if( res==0 && ((lastErrno = osGetLastError())!=ERROR_NOT_LOCKED) ){
+ pFile->lastErrno = lastErrno;
+ winLogError(SQLITE_IOERR_UNLOCK, pFile->lastErrno,
+ "unlockReadLock", pFile->zPath);
}
return res;
}
@@ -30611,11 +33930,11 @@
*/
static int winLock(sqlite3_file *id, int locktype){
int rc = SQLITE_OK; /* Return code from subroutines */
- int res = 1; /* Result of a windows lock call */
+ int res = 1; /* Result of a Windows lock call */
int newLocktype; /* Set pFile->locktype to this value before exiting */
int gotPendingLock = 0;/* True if we acquired a PENDING lock this time */
winFile *pFile = (winFile*)id;
- DWORD error = NO_ERROR;
+ DWORD lastErrno = NO_ERROR;
assert( id!=0 );
OSTRACE(("LOCK %d %d was %d(%d)\n",
@@ -30645,16 +33964,19 @@
&& (pFile->locktype==RESERVED_LOCK))
){
int cnt = 3;
- while( cnt-->0 && (res = LockFile(pFile->h, PENDING_BYTE, 0, 1, 0))==0 ){
- /* Try 3 times to get the pending lock. The pending lock might be
- ** held by another reader process who will release it momentarily.
+ while( cnt-->0 && (res = osLockFile(pFile->h, PENDING_BYTE, 0, 1, 0))==0 ){
+ /* Try 3 times to get the pending lock. This is needed to work
+ ** around problems caused by indexing and/or anti-virus software on
+ ** Windows systems.
+ ** If you are using this code as a model for alternative VFSes, do not
+ ** copy this retry logic. It is a hack intended for Windows only.
*/
OSTRACE(("could not get a PENDING lock. cnt=%d\n", cnt));
- Sleep(1);
+ if( cnt ) osSleep(1);
}
gotPendingLock = res;
if( !res ){
- error = GetLastError();
+ lastErrno = osGetLastError();
}
}
@@ -30666,7 +33988,7 @@
if( res ){
newLocktype = SHARED_LOCK;
}else{
- error = GetLastError();
+ lastErrno = osGetLastError();
}
}
@@ -30674,11 +33996,11 @@
*/
if( locktype==RESERVED_LOCK && res ){
assert( pFile->locktype==SHARED_LOCK );
- res = LockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
+ res = osLockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
if( res ){
newLocktype = RESERVED_LOCK;
}else{
- error = GetLastError();
+ lastErrno = osGetLastError();
}
}
@@ -30695,12 +34017,12 @@
assert( pFile->locktype>=SHARED_LOCK );
res = unlockReadLock(pFile);
OSTRACE(("unreadlock = %d\n", res));
- res = LockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
+ res = osLockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
if( res ){
newLocktype = EXCLUSIVE_LOCK;
}else{
- error = GetLastError();
- OSTRACE(("error-code = %d\n", error));
+ lastErrno = osGetLastError();
+ OSTRACE(("error-code = %d\n", lastErrno));
getReadLock(pFile);
}
}
@@ -30709,7 +34031,7 @@
** release it now.
*/
if( gotPendingLock && locktype==SHARED_LOCK ){
- UnlockFile(pFile->h, PENDING_BYTE, 0, 1, 0);
+ osUnlockFile(pFile->h, PENDING_BYTE, 0, 1, 0);
}
/* Update the state of the lock has held in the file descriptor then
@@ -30720,7 +34042,7 @@
}else{
OSTRACE(("LOCK FAILED %d trying for %d but got %d\n", pFile->h,
locktype, newLocktype));
- pFile->lastErrno = error;
+ pFile->lastErrno = lastErrno;
rc = SQLITE_BUSY;
}
pFile->locktype = (u8)newLocktype;
@@ -30743,9 +34065,9 @@
rc = 1;
OSTRACE(("TEST WR-LOCK %d %d (local)\n", pFile->h, rc));
}else{
- rc = LockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
+ rc = osLockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
if( rc ){
- UnlockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
+ osUnlockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
}
rc = !rc;
OSTRACE(("TEST WR-LOCK %d %d (remote)\n", pFile->h, rc));
@@ -30775,52 +34097,105 @@
pFile->locktype, pFile->sharedLockByte));
type = pFile->locktype;
if( type>=EXCLUSIVE_LOCK ){
- UnlockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
+ osUnlockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
if( locktype==SHARED_LOCK && !getReadLock(pFile) ){
/* This should never happen. We should always be able to
** reacquire the read lock */
- rc = SQLITE_IOERR_UNLOCK;
+ rc = winLogError(SQLITE_IOERR_UNLOCK, osGetLastError(),
+ "winUnlock", pFile->zPath);
}
}
if( type>=RESERVED_LOCK ){
- UnlockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
+ osUnlockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
}
if( locktype==NO_LOCK && type>=SHARED_LOCK ){
unlockReadLock(pFile);
}
if( type>=PENDING_LOCK ){
- UnlockFile(pFile->h, PENDING_BYTE, 0, 1, 0);
+ osUnlockFile(pFile->h, PENDING_BYTE, 0, 1, 0);
}
pFile->locktype = (u8)locktype;
return rc;
}
/*
+** If *pArg is inititially negative then this is a query. Set *pArg to
+** 1 or 0 depending on whether or not bit mask of pFile->ctrlFlags is set.
+**
+** If *pArg is 0 or 1, then clear or set the mask bit of pFile->ctrlFlags.
+*/
+static void winModeBit(winFile *pFile, unsigned char mask, int *pArg){
+ if( *pArg<0 ){
+ *pArg = (pFile->ctrlFlags & mask)!=0;
+ }else if( (*pArg)==0 ){
+ pFile->ctrlFlags &= ~mask;
+ }else{
+ pFile->ctrlFlags |= mask;
+ }
+}
+
+/*
** Control and query of the open file handle.
*/
static int winFileControl(sqlite3_file *id, int op, void *pArg){
+ winFile *pFile = (winFile*)id;
switch( op ){
case SQLITE_FCNTL_LOCKSTATE: {
- *(int*)pArg = ((winFile*)id)->locktype;
+ *(int*)pArg = pFile->locktype;
return SQLITE_OK;
}
case SQLITE_LAST_ERRNO: {
- *(int*)pArg = (int)((winFile*)id)->lastErrno;
+ *(int*)pArg = (int)pFile->lastErrno;
return SQLITE_OK;
}
case SQLITE_FCNTL_CHUNK_SIZE: {
- ((winFile*)id)->szChunk = *(int *)pArg;
+ pFile->szChunk = *(int *)pArg;
return SQLITE_OK;
}
case SQLITE_FCNTL_SIZE_HINT: {
- sqlite3_int64 sz = *(sqlite3_int64*)pArg;
- SimulateIOErrorBenign(1);
- winTruncate(id, sz);
- SimulateIOErrorBenign(0);
+ if( pFile->szChunk>0 ){
+ sqlite3_int64 oldSz;
+ int rc = winFileSize(id, &oldSz);
+ if( rc==SQLITE_OK ){
+ sqlite3_int64 newSz = *(sqlite3_int64*)pArg;
+ if( newSz>oldSz ){
+ SimulateIOErrorBenign(1);
+ rc = winTruncate(id, newSz);
+ SimulateIOErrorBenign(0);
+ }
+ }
+ return rc;
+ }
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_PERSIST_WAL: {
+ winModeBit(pFile, WINFILE_PERSIST_WAL, (int*)pArg);
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_POWERSAFE_OVERWRITE: {
+ winModeBit(pFile, WINFILE_PSOW, (int*)pArg);
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_VFSNAME: {
+ *(char**)pArg = sqlite3_mprintf("win32");
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_WIN32_AV_RETRY: {
+ int *a = (int*)pArg;
+ if( a[0]>0 ){
+ win32IoerrRetry = a[0];
+ }else{
+ a[0] = win32IoerrRetry;
+ }
+ if( a[1]>0 ){
+ win32IoerrRetryDelay = a[1];
+ }else{
+ a[1] = win32IoerrRetryDelay;
+ }
return SQLITE_OK;
}
}
- return SQLITE_ERROR;
+ return SQLITE_NOTFOUND;
}
/*
@@ -30834,16 +34209,17 @@
** same for both.
*/
static int winSectorSize(sqlite3_file *id){
- assert( id!=0 );
- return (int)(((winFile*)id)->sectorSize);
+ (void)id;
+ return SQLITE_DEFAULT_SECTOR_SIZE;
}
/*
** Return a vector of device characteristics.
*/
static int winDeviceCharacteristics(sqlite3_file *id){
- UNUSED_PARAMETER(id);
- return SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN;
+ winFile *p = (winFile*)id;
+ return SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN |
+ ((p->ctrlFlags & WINFILE_PSOW)?SQLITE_IOCAP_POWERSAFE_OVERWRITE:0);
}
#ifndef SQLITE_OMIT_WAL
@@ -30990,15 +34366,15 @@
/* Release/Acquire the system-level lock */
if( lockType==_SHM_UNLCK ){
- rc = UnlockFileEx(pFile->hFile.h, 0, nByte, 0, &ovlp);
+ rc = osUnlockFileEx(pFile->hFile.h, 0, nByte, 0, &ovlp);
}else{
- rc = LockFileEx(pFile->hFile.h, dwFlags, 0, nByte, 0, &ovlp);
+ rc = osLockFileEx(pFile->hFile.h, dwFlags, 0, nByte, 0, &ovlp);
}
if( rc!= 0 ){
rc = SQLITE_OK;
}else{
- pFile->lastErrno = GetLastError();
+ pFile->lastErrno = osGetLastError();
rc = SQLITE_BUSY;
}
@@ -31032,13 +34408,13 @@
int i;
if( p->mutex ) sqlite3_mutex_free(p->mutex);
for(i=0; i<p->nRegion; i++){
- bRc = UnmapViewOfFile(p->aRegion[i].pMap);
+ bRc = osUnmapViewOfFile(p->aRegion[i].pMap);
OSTRACE(("SHM-PURGE pid-%d unmap region=%d %s\n",
- (int)GetCurrentProcessId(), i,
+ (int)osGetCurrentProcessId(), i,
bRc ? "ok" : "failed"));
- bRc = CloseHandle(p->aRegion[i].hMap);
+ bRc = osCloseHandle(p->aRegion[i].hMap);
OSTRACE(("SHM-PURGE pid-%d close region=%d %s\n",
- (int)GetCurrentProcessId(), i,
+ (int)osGetCurrentProcessId(), i,
bRc ? "ok" : "failed"));
}
if( p->hFile.h != INVALID_HANDLE_VALUE ){
@@ -31048,7 +34424,9 @@
}
if( deleteFlag ){
SimulateIOErrorBenign(1);
+ sqlite3BeginBenignMalloc();
winDelete(pVfs, p->zFilename, 0);
+ sqlite3EndBenignMalloc();
SimulateIOErrorBenign(0);
}
*pp = p->pNext;
@@ -31080,17 +34458,18 @@
** allocate space for a new winShmNode and filename.
*/
p = sqlite3_malloc( sizeof(*p) );
- if( p==0 ) return SQLITE_NOMEM;
+ if( p==0 ) return SQLITE_IOERR_NOMEM;
memset(p, 0, sizeof(*p));
nName = sqlite3Strlen30(pDbFd->zPath);
- pNew = sqlite3_malloc( sizeof(*pShmNode) + nName + 15 );
+ pNew = sqlite3_malloc( sizeof(*pShmNode) + nName + 17 );
if( pNew==0 ){
sqlite3_free(p);
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
- memset(pNew, 0, sizeof(*pNew));
+ memset(pNew, 0, sizeof(*pNew) + nName + 17);
pNew->zFilename = (char*)&pNew[1];
sqlite3_snprintf(nName+15, pNew->zFilename, "%s-shm", pDbFd->zPath);
+ sqlite3FileSuffix3(pDbFd->zPath, pNew->zFilename);
/* Look to see if there is an existing winShmNode that can be used.
** If no matching winShmNode currently exists, create a new one.
@@ -31113,7 +34492,7 @@
pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST);
if( pShmNode->mutex==0 ){
- rc = SQLITE_NOMEM;
+ rc = SQLITE_IOERR_NOMEM;
goto shm_open_err;
}
@@ -31123,7 +34502,6 @@
SQLITE_OPEN_WAL | SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, /* Mode flags */
0);
if( SQLITE_OK!=rc ){
- rc = SQLITE_CANTOPEN_BKPT;
goto shm_open_err;
}
@@ -31133,7 +34511,8 @@
if( winShmSystemLock(pShmNode, _SHM_WRLCK, WIN_SHM_DMS, 1)==SQLITE_OK ){
rc = winTruncate((sqlite3_file *)&pShmNode->hFile, 0);
if( rc!=SQLITE_OK ){
- rc = SQLITE_IOERR_SHMOPEN;
+ rc = winLogError(SQLITE_IOERR_SHMOPEN, osGetLastError(),
+ "winOpenShm", pDbFd->zPath);
}
}
if( rc==SQLITE_OK ){
@@ -31318,7 +34697,7 @@
}
sqlite3_mutex_leave(pShmNode->mutex);
OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x %s\n",
- p->id, (int)GetCurrentProcessId(), p->sharedMask, p->exclMask,
+ p->id, (int)osGetCurrentProcessId(), p->sharedMask, p->exclMask,
rc ? "failed" : "ok"));
return rc;
}
@@ -31392,7 +34771,8 @@
*/
rc = winFileSize((sqlite3_file *)&pShmNode->hFile, &sz);
if( rc!=SQLITE_OK ){
- rc = SQLITE_IOERR_SHMSIZE;
+ rc = winLogError(SQLITE_IOERR_SHMSIZE, osGetLastError(),
+ "winShmMap1", pDbFd->zPath);
goto shmpage_out;
}
@@ -31406,7 +34786,8 @@
if( !isWrite ) goto shmpage_out;
rc = winTruncate((sqlite3_file *)&pShmNode->hFile, nByte);
if( rc!=SQLITE_OK ){
- rc = SQLITE_IOERR_SHMSIZE;
+ rc = winLogError(SQLITE_IOERR_SHMSIZE, osGetLastError(),
+ "winShmMap2", pDbFd->zPath);
goto shmpage_out;
}
}
@@ -31425,26 +34806,27 @@
HANDLE hMap; /* file-mapping handle */
void *pMap = 0; /* Mapped memory region */
- hMap = CreateFileMapping(pShmNode->hFile.h,
+ hMap = osCreateFileMapping(pShmNode->hFile.h,
NULL, PAGE_READWRITE, 0, nByte, NULL
);
OSTRACE(("SHM-MAP pid-%d create region=%d nbyte=%d %s\n",
- (int)GetCurrentProcessId(), pShmNode->nRegion, nByte,
+ (int)osGetCurrentProcessId(), pShmNode->nRegion, nByte,
hMap ? "ok" : "failed"));
if( hMap ){
int iOffset = pShmNode->nRegion*szRegion;
int iOffsetShift = iOffset % winSysInfo.dwAllocationGranularity;
- pMap = MapViewOfFile(hMap, FILE_MAP_WRITE | FILE_MAP_READ,
+ pMap = osMapViewOfFile(hMap, FILE_MAP_WRITE | FILE_MAP_READ,
0, iOffset - iOffsetShift, szRegion + iOffsetShift
);
OSTRACE(("SHM-MAP pid-%d map region=%d offset=%d size=%d %s\n",
- (int)GetCurrentProcessId(), pShmNode->nRegion, iOffset, szRegion,
- pMap ? "ok" : "failed"));
+ (int)osGetCurrentProcessId(), pShmNode->nRegion, iOffset,
+ szRegion, pMap ? "ok" : "failed"));
}
if( !pMap ){
- pShmNode->lastErrno = GetLastError();
- rc = SQLITE_IOERR;
- if( hMap ) CloseHandle(hMap);
+ pShmNode->lastErrno = osGetLastError();
+ rc = winLogError(SQLITE_IOERR_SHMMAP, pShmNode->lastErrno,
+ "winShmMap3", pDbFd->zPath);
+ if( hMap ) osCloseHandle(hMap);
goto shmpage_out;
}
@@ -31525,7 +34907,7 @@
*/
#if SQLITE_OS_WINCE==0
}else{
- zConverted = utf8ToMbcs(zFilename);
+ zConverted = sqlite3_win32_utf8_to_mbcs(zFilename);
#endif
}
/* caller will handle out of memory */
@@ -31542,7 +34924,7 @@
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"0123456789";
size_t i, j;
- char zTempPath[MAX_PATH+1];
+ char zTempPath[MAX_PATH+2];
/* It's odd to simulate an io-error here, but really this is just
** using the io-error infrastructure to test that SQLite handles this
@@ -31555,29 +34937,29 @@
}else if( isNT() ){
char *zMulti;
WCHAR zWidePath[MAX_PATH];
- GetTempPathW(MAX_PATH-30, zWidePath);
+ osGetTempPathW(MAX_PATH-30, zWidePath);
zMulti = unicodeToUtf8(zWidePath);
if( zMulti ){
sqlite3_snprintf(MAX_PATH-30, zTempPath, "%s", zMulti);
- free(zMulti);
+ sqlite3_free(zMulti);
}else{
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
+** Since the ANSI version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
#if SQLITE_OS_WINCE==0
}else{
char *zUtf8;
char zMbcsPath[MAX_PATH];
- GetTempPathA(MAX_PATH-30, zMbcsPath);
+ osGetTempPathA(MAX_PATH-30, zMbcsPath);
zUtf8 = sqlite3_win32_mbcs_to_utf8(zMbcsPath);
if( zUtf8 ){
sqlite3_snprintf(MAX_PATH-30, zTempPath, "%s", zUtf8);
- free(zUtf8);
+ sqlite3_free(zUtf8);
}else{
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
#endif
}
@@ -31585,14 +34967,14 @@
/* Check that the output buffer is large enough for the temporary file
** name. If it is not, return SQLITE_ERROR.
*/
- if( (sqlite3Strlen30(zTempPath) + sqlite3Strlen30(SQLITE_TEMP_FILE_PREFIX) + 17) >= nBuf ){
+ if( (sqlite3Strlen30(zTempPath) + sqlite3Strlen30(SQLITE_TEMP_FILE_PREFIX) + 18) >= nBuf ){
return SQLITE_ERROR;
}
for(i=sqlite3Strlen30(zTempPath); i>0 && zTempPath[i-1]=='\\'; i--){}
zTempPath[i] = 0;
- sqlite3_snprintf(nBuf-17, zBuf,
+ sqlite3_snprintf(nBuf-18, zBuf,
"%s\\"SQLITE_TEMP_FILE_PREFIX, zTempPath);
j = sqlite3Strlen30(zBuf);
sqlite3_randomness(15, &zBuf[j]);
@@ -31600,74 +34982,13 @@
zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
}
zBuf[j] = 0;
+ zBuf[j+1] = 0;
OSTRACE(("TEMP FILENAME: %s\n", zBuf));
return SQLITE_OK;
}
/*
-** The return value of getLastErrorMsg
-** is zero if the error message fits in the buffer, or non-zero
-** otherwise (if the message was truncated).
-*/
-static int getLastErrorMsg(int nBuf, char *zBuf){
- /* FormatMessage returns 0 on failure. Otherwise it
- ** returns the number of TCHARs written to the output
- ** buffer, excluding the terminating null char.
- */
- DWORD error = GetLastError();
- DWORD dwLen = 0;
- char *zOut = 0;
-
- if( isNT() ){
- WCHAR *zTempWide = NULL;
- dwLen = FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
- NULL,
- error,
- 0,
- (LPWSTR) &zTempWide,
- 0,
- 0);
- if( dwLen > 0 ){
- /* allocate a buffer and convert to UTF8 */
- zOut = unicodeToUtf8(zTempWide);
- /* free the system buffer allocated by FormatMessage */
- LocalFree(zTempWide);
- }
-/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
-** it's important to not reference them for WINCE builds.
-*/
-#if SQLITE_OS_WINCE==0
- }else{
- char *zTemp = NULL;
- dwLen = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
- NULL,
- error,
- 0,
- (LPSTR) &zTemp,
- 0,
- 0);
- if( dwLen > 0 ){
- /* allocate a buffer and convert to UTF8 */
- zOut = sqlite3_win32_mbcs_to_utf8(zTemp);
- /* free the system buffer allocated by FormatMessage */
- LocalFree(zTemp);
- }
-#endif
- }
- if( 0 == dwLen ){
- sqlite3_snprintf(nBuf, zBuf, "OsError 0x%x (%u)", error, error);
- }else{
- /* copy a maximum of nBuf chars to output buffer */
- sqlite3_snprintf(nBuf, zBuf, "%s", zOut);
- /* free the UTF8 buffer */
- free(zOut);
- }
- return 0;
-}
-
-/*
** Open a file.
*/
static int winOpen(
@@ -31678,6 +34999,7 @@
int *pOutFlags /* Status return flags */
){
HANDLE h;
+ DWORD lastErrno;
DWORD dwDesiredAccess;
DWORD dwShareMode;
DWORD dwCreationDisposition;
@@ -31688,11 +35010,12 @@
winFile *pFile = (winFile*)id;
void *zConverted; /* Filename in OS encoding */
const char *zUtf8Name = zName; /* Filename in UTF-8 encoding */
+ int cnt = 0;
/* If argument zPath is a NULL pointer, this function is required to open
** a temporary file. Use this buffer to store the file name in.
*/
- char zTmpname[MAX_PATH+1]; /* Buffer used to create temp filename */
+ char zTmpname[MAX_PATH+2]; /* Buffer used to create temp filename */
int rc = SQLITE_OK; /* Function Return Code */
#if !defined(NDEBUG) || SQLITE_OS_WINCE
@@ -31751,17 +35074,24 @@
*/
if( !zUtf8Name ){
assert(isDelete && !isOpenJournal);
- rc = getTempname(MAX_PATH+1, zTmpname);
+ rc = getTempname(MAX_PATH+2, zTmpname);
if( rc!=SQLITE_OK ){
return rc;
}
zUtf8Name = zTmpname;
}
+ /* Database filenames are double-zero terminated if they are not
+ ** URIs with parameters. Hence, they can always be passed into
+ ** sqlite3_uri_parameter().
+ */
+ assert( (eType!=SQLITE_OPEN_MAIN_DB) || (flags & SQLITE_OPEN_URI) ||
+ zUtf8Name[strlen(zUtf8Name)+1]==0 );
+
/* Convert the filename to the system encoding. */
zConverted = convertUtf8Filename(zUtf8Name);
if( zConverted==0 ){
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
if( isReadWrite ){
@@ -31807,39 +35137,40 @@
#endif
if( isNT() ){
- h = CreateFileW((WCHAR*)zConverted,
- dwDesiredAccess,
- dwShareMode,
- NULL,
- dwCreationDisposition,
- dwFlagsAndAttributes,
- NULL
- );
+ while( (h = osCreateFileW((LPCWSTR)zConverted,
+ dwDesiredAccess,
+ dwShareMode, NULL,
+ dwCreationDisposition,
+ dwFlagsAndAttributes,
+ NULL))==INVALID_HANDLE_VALUE &&
+ retryIoerr(&cnt, &lastErrno) ){}
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
+** Since the ANSI version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
#if SQLITE_OS_WINCE==0
}else{
- h = CreateFileA((char*)zConverted,
- dwDesiredAccess,
- dwShareMode,
- NULL,
- dwCreationDisposition,
- dwFlagsAndAttributes,
- NULL
- );
+ while( (h = osCreateFileA((LPCSTR)zConverted,
+ dwDesiredAccess,
+ dwShareMode, NULL,
+ dwCreationDisposition,
+ dwFlagsAndAttributes,
+ NULL))==INVALID_HANDLE_VALUE &&
+ retryIoerr(&cnt, &lastErrno) ){}
#endif
}
+ logIoerr(cnt);
+
OSTRACE(("OPEN %d %s 0x%lx %s\n",
h, zName, dwDesiredAccess,
h==INVALID_HANDLE_VALUE ? "failed" : "ok"));
if( h==INVALID_HANDLE_VALUE ){
- pFile->lastErrno = GetLastError();
- free(zConverted);
- if( isReadWrite ){
+ pFile->lastErrno = lastErrno;
+ winLogError(SQLITE_CANTOPEN, pFile->lastErrno, "winOpen", zUtf8Name);
+ sqlite3_free(zConverted);
+ if( isReadWrite && !isExclusive ){
return winOpen(pVfs, zName, id,
((flags|SQLITE_OPEN_READONLY)&~(SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE)), pOutFlags);
}else{
@@ -31862,14 +35193,16 @@
pFile->pVfs = pVfs;
pFile->pShm = 0;
pFile->zPath = zName;
- pFile->sectorSize = getSectorSize(pVfs, zUtf8Name);
+ if( sqlite3_uri_boolean(zName, "psow", SQLITE_POWERSAFE_OVERWRITE) ){
+ pFile->ctrlFlags |= WINFILE_PSOW;
+ }
#if SQLITE_OS_WINCE
if( isReadWrite && eType==SQLITE_OPEN_MAIN_DB
&& !winceCreateLock(zName, pFile)
){
- CloseHandle(h);
- free(zConverted);
+ osCloseHandle(h);
+ sqlite3_free(zConverted);
return SQLITE_CANTOPEN_BKPT;
}
if( isTemp ){
@@ -31877,7 +35210,7 @@
}else
#endif
{
- free(zConverted);
+ sqlite3_free(zConverted);
}
OpenCounter(+1);
@@ -31887,7 +35220,7 @@
/*
** Delete the named file.
**
-** Note that windows does not allow a file to be deleted if some other
+** Note that Windows does not allow a file to be deleted if some other
** process has it open. Sometimes a virus scanner or indexing program
** will open a journal file shortly after it is created in order to do
** whatever it does. While this other process is holding the
@@ -31896,15 +35229,14 @@
** to MX_DELETION_ATTEMPTs deletion attempts are run before giving
** up and returning an error.
*/
-#define MX_DELETION_ATTEMPTS 5
static int winDelete(
sqlite3_vfs *pVfs, /* Not used on win32 */
const char *zFilename, /* Name of file to delete */
int syncDir /* Not used on win32 */
){
int cnt = 0;
- DWORD rc;
- DWORD error = 0;
+ int rc;
+ DWORD lastErrno;
void *zConverted;
UNUSED_PARAMETER(pVfs);
UNUSED_PARAMETER(syncDir);
@@ -31912,36 +35244,34 @@
SimulateIOError(return SQLITE_IOERR_DELETE);
zConverted = convertUtf8Filename(zFilename);
if( zConverted==0 ){
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
if( isNT() ){
- do{
- DeleteFileW(zConverted);
- }while( ( ((rc = GetFileAttributesW(zConverted)) != INVALID_FILE_ATTRIBUTES)
- || ((error = GetLastError()) == ERROR_ACCESS_DENIED))
- && (++cnt < MX_DELETION_ATTEMPTS)
- && (Sleep(100), 1) );
+ rc = 1;
+ while( osGetFileAttributesW(zConverted)!=INVALID_FILE_ATTRIBUTES &&
+ (rc = osDeleteFileW(zConverted))==0 && retryIoerr(&cnt, &lastErrno) ){}
+ rc = rc ? SQLITE_OK : SQLITE_ERROR;
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
+** Since the ANSI version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
#if SQLITE_OS_WINCE==0
}else{
- do{
- DeleteFileA(zConverted);
- }while( ( ((rc = GetFileAttributesA(zConverted)) != INVALID_FILE_ATTRIBUTES)
- || ((error = GetLastError()) == ERROR_ACCESS_DENIED))
- && (++cnt < MX_DELETION_ATTEMPTS)
- && (Sleep(100), 1) );
+ rc = 1;
+ while( osGetFileAttributesA(zConverted)!=INVALID_FILE_ATTRIBUTES &&
+ (rc = osDeleteFileA(zConverted))==0 && retryIoerr(&cnt, &lastErrno) ){}
+ rc = rc ? SQLITE_OK : SQLITE_ERROR;
#endif
}
- free(zConverted);
- OSTRACE(("DELETE \"%s\" %s\n", zFilename,
- ( (rc==INVALID_FILE_ATTRIBUTES) && (error==ERROR_FILE_NOT_FOUND)) ?
- "ok" : "failed" ));
-
- return ( (rc == INVALID_FILE_ATTRIBUTES)
- && (error == ERROR_FILE_NOT_FOUND)) ? SQLITE_OK : SQLITE_IOERR_DELETE;
+ if( rc ){
+ rc = winLogError(SQLITE_IOERR_DELETE, lastErrno,
+ "winDelete", zFilename);
+ }else{
+ logIoerr(cnt);
+ }
+ sqlite3_free(zConverted);
+ OSTRACE(("DELETE \"%s\" %s\n", zFilename, (rc ? "failed" : "ok" )));
+ return rc;
}
/*
@@ -31955,20 +35285,23 @@
){
DWORD attr;
int rc = 0;
+ DWORD lastErrno;
void *zConverted;
UNUSED_PARAMETER(pVfs);
SimulateIOError( return SQLITE_IOERR_ACCESS; );
zConverted = convertUtf8Filename(zFilename);
if( zConverted==0 ){
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
if( isNT() ){
+ int cnt = 0;
WIN32_FILE_ATTRIBUTE_DATA sAttrData;
memset(&sAttrData, 0, sizeof(sAttrData));
- if( GetFileAttributesExW((WCHAR*)zConverted,
+ while( !(rc = osGetFileAttributesExW((LPCWSTR)zConverted,
GetFileExInfoStandard,
- &sAttrData) ){
+ &sAttrData)) && retryIoerr(&cnt, &lastErrno) ){}
+ if( rc ){
/* For an SQLITE_ACCESS_EXISTS query, treat a zero-length file
** as if it does not exist.
*/
@@ -31980,30 +35313,33 @@
attr = sAttrData.dwFileAttributes;
}
}else{
- if( GetLastError()!=ERROR_FILE_NOT_FOUND ){
- free(zConverted);
+ logIoerr(cnt);
+ if( lastErrno!=ERROR_FILE_NOT_FOUND ){
+ winLogError(SQLITE_IOERR_ACCESS, lastErrno, "winAccess", zFilename);
+ sqlite3_free(zConverted);
return SQLITE_IOERR_ACCESS;
}else{
attr = INVALID_FILE_ATTRIBUTES;
}
}
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
+** Since the ANSI version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
#if SQLITE_OS_WINCE==0
}else{
- attr = GetFileAttributesA((char*)zConverted);
+ attr = osGetFileAttributesA((char*)zConverted);
#endif
}
- free(zConverted);
+ sqlite3_free(zConverted);
switch( flags ){
case SQLITE_ACCESS_READ:
case SQLITE_ACCESS_EXISTS:
rc = attr!=INVALID_FILE_ATTRIBUTES;
break;
case SQLITE_ACCESS_READWRITE:
- rc = (attr & FILE_ATTRIBUTE_READONLY)==0;
+ rc = attr!=INVALID_FILE_ATTRIBUTES &&
+ (attr & FILE_ATTRIBUTE_READONLY)==0;
break;
default:
assert(!"Invalid flags argument");
@@ -32045,6 +35381,13 @@
void *zConverted;
char *zOut;
+ /* If this path name begins with "/X:", where "X" is any alphabetic
+ ** character, discard the initial "/" from the pathname.
+ */
+ if( zRelative[0]=='/' && sqlite3Isalpha(zRelative[1]) && zRelative[2]==':' ){
+ zRelative++;
+ }
+
/* It's odd to simulate an io-error here, but really this is just
** using the io-error infrastructure to test that SQLite handles this
** function failing. This function could fail if, for example, the
@@ -32053,117 +35396,50 @@
SimulateIOError( return SQLITE_ERROR );
UNUSED_PARAMETER(nFull);
zConverted = convertUtf8Filename(zRelative);
+ if( zConverted==0 ){
+ return SQLITE_IOERR_NOMEM;
+ }
if( isNT() ){
- WCHAR *zTemp;
- nByte = GetFullPathNameW((WCHAR*)zConverted, 0, 0, 0) + 3;
- zTemp = malloc( nByte*sizeof(zTemp[0]) );
+ LPWSTR zTemp;
+ nByte = osGetFullPathNameW((LPCWSTR)zConverted, 0, 0, 0) + 3;
+ zTemp = sqlite3_malloc( nByte*sizeof(zTemp[0]) );
if( zTemp==0 ){
- free(zConverted);
- return SQLITE_NOMEM;
+ sqlite3_free(zConverted);
+ return SQLITE_IOERR_NOMEM;
}
- GetFullPathNameW((WCHAR*)zConverted, nByte, zTemp, 0);
- free(zConverted);
+ osGetFullPathNameW((LPCWSTR)zConverted, nByte, zTemp, 0);
+ sqlite3_free(zConverted);
zOut = unicodeToUtf8(zTemp);
- free(zTemp);
+ sqlite3_free(zTemp);
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
+** Since the ANSI version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
#if SQLITE_OS_WINCE==0
}else{
char *zTemp;
- nByte = GetFullPathNameA((char*)zConverted, 0, 0, 0) + 3;
- zTemp = malloc( nByte*sizeof(zTemp[0]) );
+ nByte = osGetFullPathNameA((char*)zConverted, 0, 0, 0) + 3;
+ zTemp = sqlite3_malloc( nByte*sizeof(zTemp[0]) );
if( zTemp==0 ){
- free(zConverted);
- return SQLITE_NOMEM;
+ sqlite3_free(zConverted);
+ return SQLITE_IOERR_NOMEM;
}
- GetFullPathNameA((char*)zConverted, nByte, zTemp, 0);
- free(zConverted);
+ osGetFullPathNameA((char*)zConverted, nByte, zTemp, 0);
+ sqlite3_free(zConverted);
zOut = sqlite3_win32_mbcs_to_utf8(zTemp);
- free(zTemp);
+ sqlite3_free(zTemp);
#endif
}
if( zOut ){
sqlite3_snprintf(pVfs->mxPathname, zFull, "%s", zOut);
- free(zOut);
+ sqlite3_free(zOut);
return SQLITE_OK;
}else{
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
#endif
}
-/*
-** Get the sector size of the device used to store
-** file.
-*/
-static int getSectorSize(
- sqlite3_vfs *pVfs,
- const char *zRelative /* UTF-8 file name */
-){
- DWORD bytesPerSector = SQLITE_DEFAULT_SECTOR_SIZE;
- /* GetDiskFreeSpace is not supported under WINCE */
-#if SQLITE_OS_WINCE
- UNUSED_PARAMETER(pVfs);
- UNUSED_PARAMETER(zRelative);
-#else
- char zFullpath[MAX_PATH+1];
- int rc;
- DWORD dwRet = 0;
- DWORD dwDummy;
-
- /*
- ** We need to get the full path name of the file
- ** to get the drive letter to look up the sector
- ** size.
- */
- SimulateIOErrorBenign(1);
- rc = winFullPathname(pVfs, zRelative, MAX_PATH, zFullpath);
- SimulateIOErrorBenign(0);
- if( rc == SQLITE_OK )
- {
- void *zConverted = convertUtf8Filename(zFullpath);
- if( zConverted ){
- if( isNT() ){
- /* trim path to just drive reference */
- WCHAR *p = zConverted;
- for(;*p;p++){
- if( *p == '\\' ){
- *p = '\0';
- break;
- }
- }
- dwRet = GetDiskFreeSpaceW((WCHAR*)zConverted,
- &dwDummy,
- &bytesPerSector,
- &dwDummy,
- &dwDummy);
- }else{
- /* trim path to just drive reference */
- char *p = (char *)zConverted;
- for(;*p;p++){
- if( *p == '\\' ){
- *p = '\0';
- break;
- }
- }
- dwRet = GetDiskFreeSpaceA((char*)zConverted,
- &dwDummy,
- &bytesPerSector,
- &dwDummy,
- &dwDummy);
- }
- free(zConverted);
- }
- if( !dwRet ){
- bytesPerSector = SQLITE_DEFAULT_SECTOR_SIZE;
- }
- }
-#endif
- return (int) bytesPerSector;
-}
-
#ifndef SQLITE_OMIT_LOAD_EXTENSION
/*
** Interfaces for opening a shared library, finding entry points
@@ -32181,37 +35457,30 @@
return 0;
}
if( isNT() ){
- h = LoadLibraryW((WCHAR*)zConverted);
+ h = osLoadLibraryW((LPCWSTR)zConverted);
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
+** Since the ANSI version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
#if SQLITE_OS_WINCE==0
}else{
- h = LoadLibraryA((char*)zConverted);
+ h = osLoadLibraryA((char*)zConverted);
#endif
}
- free(zConverted);
+ sqlite3_free(zConverted);
return (void*)h;
}
static void winDlError(sqlite3_vfs *pVfs, int nBuf, char *zBufOut){
UNUSED_PARAMETER(pVfs);
- getLastErrorMsg(nBuf, zBufOut);
+ getLastErrorMsg(osGetLastError(), nBuf, zBufOut);
}
-void (*winDlSym(sqlite3_vfs *pVfs, void *pHandle, const char *zSymbol))(void){
+static void (*winDlSym(sqlite3_vfs *pVfs, void *pHandle, const char *zSymbol))(void){
UNUSED_PARAMETER(pVfs);
-#if SQLITE_OS_WINCE
- /* The GetProcAddressA() routine is only available on wince. */
- return (void(*)(void))GetProcAddressA((HANDLE)pHandle, zSymbol);
-#else
- /* All other windows platforms expect GetProcAddress() to take
- ** an Ansi string regardless of the _UNICODE setting */
- return (void(*)(void))GetProcAddress((HANDLE)pHandle, zSymbol);
-#endif
+ return (void(*)(void))osGetProcAddressA((HANDLE)pHandle, zSymbol);
}
-void winDlClose(sqlite3_vfs *pVfs, void *pHandle){
+static void winDlClose(sqlite3_vfs *pVfs, void *pHandle){
UNUSED_PARAMETER(pVfs);
- FreeLibrary((HANDLE)pHandle);
+ osFreeLibrary((HANDLE)pHandle);
}
#else /* if SQLITE_OMIT_LOAD_EXTENSION is defined: */
#define winDlOpen 0
@@ -32233,23 +35502,23 @@
#else
if( sizeof(SYSTEMTIME)<=nBuf-n ){
SYSTEMTIME x;
- GetSystemTime(&x);
+ osGetSystemTime(&x);
memcpy(&zBuf[n], &x, sizeof(x));
n += sizeof(x);
}
if( sizeof(DWORD)<=nBuf-n ){
- DWORD pid = GetCurrentProcessId();
+ DWORD pid = osGetCurrentProcessId();
memcpy(&zBuf[n], &pid, sizeof(pid));
n += sizeof(pid);
}
if( sizeof(DWORD)<=nBuf-n ){
- DWORD cnt = GetTickCount();
+ DWORD cnt = osGetTickCount();
memcpy(&zBuf[n], &cnt, sizeof(cnt));
n += sizeof(cnt);
}
if( sizeof(LARGE_INTEGER)<=nBuf-n ){
LARGE_INTEGER i;
- QueryPerformanceCounter(&i);
+ osQueryPerformanceCounter(&i);
memcpy(&zBuf[n], &i, sizeof(i));
n += sizeof(i);
}
@@ -32262,7 +35531,7 @@
** Sleep for a little while. Return the amount of time slept.
*/
static int winSleep(sqlite3_vfs *pVfs, int microsec){
- Sleep((microsec+999)/1000);
+ osSleep((microsec+999)/1000);
UNUSED_PARAMETER(pVfs);
return ((microsec+999)/1000)*1000;
}
@@ -32283,7 +35552,8 @@
** epoch of noon in Greenwich on November 24, 4714 B.C according to the
** proleptic Gregorian calendar.
**
-** On success, return 0. Return 1 if the time and date cannot be found.
+** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date
+** cannot be found.
*/
static int winCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *piNow){
/* FILETIME structure is a 64-bit value representing the number of
@@ -32300,13 +35570,13 @@
#if SQLITE_OS_WINCE
SYSTEMTIME time;
- GetSystemTime(&time);
+ osGetSystemTime(&time);
/* if SystemTimeToFileTime() fails, it returns zero. */
- if (!SystemTimeToFileTime(&time,&ft)){
- return 1;
+ if (!osSystemTimeToFileTime(&time,&ft)){
+ return SQLITE_ERROR;
}
#else
- GetSystemTimeAsFileTime( &ft );
+ osGetSystemTimeAsFileTime( &ft );
#endif
*piNow = winFiletimeEpoch +
@@ -32319,7 +35589,7 @@
}
#endif
UNUSED_PARAMETER(pVfs);
- return 0;
+ return SQLITE_OK;
}
/*
@@ -32327,7 +35597,7 @@
** current time and date as a Julian Day number into *prNow and
** return 0. Return 1 if the time and date cannot be found.
*/
-int winCurrentTime(sqlite3_vfs *pVfs, double *prNow){
+static int winCurrentTime(sqlite3_vfs *pVfs, double *prNow){
int rc;
sqlite3_int64 i;
rc = winCurrentTimeInt64(pVfs, &i);
@@ -32339,8 +35609,8 @@
/*
** The idea is that this function works like a combination of
-** GetLastError() and FormatMessage() on windows (or errno and
-** strerror_r() on unix). After an error is returned by an OS
+** GetLastError() and FormatMessage() on Windows (or errno and
+** strerror_r() on Unix). After an error is returned by an OS
** function, SQLite calls this function with zBuf pointing to
** a buffer of nBuf bytes. The OS layer should populate the
** buffer with a nul-terminated UTF-8 encoded error message
@@ -32369,17 +35639,15 @@
*/
static int winGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
UNUSED_PARAMETER(pVfs);
- return getLastErrorMsg(nBuf, zBuf);
+ return getLastErrorMsg(osGetLastError(), nBuf, zBuf);
}
-
-
/*
** Initialize and deinitialize the operating system interface.
*/
SQLITE_API int sqlite3_os_init(void){
static sqlite3_vfs winVfs = {
- 2, /* iVersion */
+ 3, /* iVersion */
sizeof(winFile), /* szOsFile */
MAX_PATH, /* mxPathname */
0, /* pNext */
@@ -32398,18 +35666,26 @@
winCurrentTime, /* xCurrentTime */
winGetLastError, /* xGetLastError */
winCurrentTimeInt64, /* xCurrentTimeInt64 */
+ winSetSystemCall, /* xSetSystemCall */
+ winGetSystemCall, /* xGetSystemCall */
+ winNextSystemCall, /* xNextSystemCall */
};
+ /* Double-check that the aSyscall[] array has been constructed
+ ** correctly. See ticket [bb3a86e890c8e96ab] */
+ assert( ArraySize(aSyscall)==60 );
+
#ifndef SQLITE_OMIT_WAL
/* get memory map allocation granularity */
memset(&winSysInfo, 0, sizeof(SYSTEM_INFO));
- GetSystemInfo(&winSysInfo);
+ osGetSystemInfo(&winSysInfo);
assert(winSysInfo.dwAllocationGranularity > 0);
#endif
sqlite3_vfs_register(&winVfs, 1);
return SQLITE_OK;
}
+
SQLITE_API int sqlite3_os_end(void){
return SQLITE_OK;
}
@@ -32849,7 +36125,7 @@
PgHdr *pDirty, *pDirtyTail; /* List of dirty pages in LRU order */
PgHdr *pSynced; /* Last synced page in dirty page list */
int nRef; /* Number of referenced pages */
- int nMax; /* Configured cache size */
+ int szCache; /* Configured cache size */
int szPage; /* Size of every page in this cache */
int szExtra; /* Size of extra space for each page */
int bPurgeable; /* True if pages are on backing store */
@@ -32960,7 +36236,7 @@
if( p->pgno==1 ){
pCache->pPage1 = 0;
}
- sqlite3GlobalConfig.pcache.xUnpin(pCache->pCache, p, 0);
+ sqlite3GlobalConfig.pcache2.xUnpin(pCache->pCache, p->pPage, 0);
}
}
@@ -32970,18 +36246,18 @@
** functions are threadsafe.
*/
SQLITE_PRIVATE int sqlite3PcacheInitialize(void){
- if( sqlite3GlobalConfig.pcache.xInit==0 ){
+ if( sqlite3GlobalConfig.pcache2.xInit==0 ){
/* IMPLEMENTATION-OF: R-26801-64137 If the xInit() method is NULL, then the
** built-in default page cache is used instead of the application defined
** page cache. */
sqlite3PCacheSetDefault();
}
- return sqlite3GlobalConfig.pcache.xInit(sqlite3GlobalConfig.pcache.pArg);
+ return sqlite3GlobalConfig.pcache2.xInit(sqlite3GlobalConfig.pcache2.pArg);
}
SQLITE_PRIVATE void sqlite3PcacheShutdown(void){
- if( sqlite3GlobalConfig.pcache.xShutdown ){
+ if( sqlite3GlobalConfig.pcache2.xShutdown ){
/* IMPLEMENTATION-OF: R-26000-56589 The xShutdown() method may be NULL. */
- sqlite3GlobalConfig.pcache.xShutdown(sqlite3GlobalConfig.pcache.pArg);
+ sqlite3GlobalConfig.pcache2.xShutdown(sqlite3GlobalConfig.pcache2.pArg);
}
}
@@ -33010,7 +36286,7 @@
p->bPurgeable = bPurgeable;
p->xStress = xStress;
p->pStress = pStress;
- p->nMax = 100;
+ p->szCache = 100;
}
/*
@@ -33020,7 +36296,7 @@
SQLITE_PRIVATE void sqlite3PcacheSetPageSize(PCache *pCache, int szPage){
assert( pCache->nRef==0 && pCache->pDirty==0 );
if( pCache->pCache ){
- sqlite3GlobalConfig.pcache.xDestroy(pCache->pCache);
+ sqlite3GlobalConfig.pcache2.xDestroy(pCache->pCache);
pCache->pCache = 0;
pCache->pPage1 = 0;
}
@@ -33028,6 +36304,17 @@
}
/*
+** Compute the number of pages of cache requested.
+*/
+static int numberOfCachePages(PCache *p){
+ if( p->szCache>=0 ){
+ return p->szCache;
+ }else{
+ return (int)((-1024*(i64)p->szCache)/(p->szPage+p->szExtra));
+ }
+}
+
+/*
** Try to obtain a page from the cache.
*/
SQLITE_PRIVATE int sqlite3PcacheFetch(
@@ -33036,7 +36323,8 @@
int createFlag, /* If true, create page if it does not exist already */
PgHdr **ppPage /* Write the page here */
){
- PgHdr *pPage = 0;
+ sqlite3_pcache_page *pPage = 0;
+ PgHdr *pPgHdr = 0;
int eCreate;
assert( pCache!=0 );
@@ -33048,19 +36336,19 @@
*/
if( !pCache->pCache && createFlag ){
sqlite3_pcache *p;
- int nByte;
- nByte = pCache->szPage + pCache->szExtra + sizeof(PgHdr);
- p = sqlite3GlobalConfig.pcache.xCreate(nByte, pCache->bPurgeable);
+ p = sqlite3GlobalConfig.pcache2.xCreate(
+ pCache->szPage, pCache->szExtra + sizeof(PgHdr), pCache->bPurgeable
+ );
if( !p ){
return SQLITE_NOMEM;
}
- sqlite3GlobalConfig.pcache.xCachesize(p, pCache->nMax);
+ sqlite3GlobalConfig.pcache2.xCachesize(p, numberOfCachePages(pCache));
pCache->pCache = p;
}
eCreate = createFlag * (1 + (!pCache->bPurgeable || !pCache->pDirty));
if( pCache->pCache ){
- pPage = sqlite3GlobalConfig.pcache.xFetch(pCache->pCache, pgno, eCreate);
+ pPage = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache, pgno, eCreate);
}
if( !pPage && eCreate==1 ){
@@ -33082,39 +36370,49 @@
}
if( pPg ){
int rc;
+#ifdef SQLITE_LOG_CACHE_SPILL
+ sqlite3_log(SQLITE_FULL,
+ "spill page %d making room for %d - cache used: %d/%d",
+ pPg->pgno, pgno,
+ sqlite3GlobalConfig.pcache.xPagecount(pCache->pCache),
+ numberOfCachePages(pCache));
+#endif
rc = pCache->xStress(pCache->pStress, pPg);
if( rc!=SQLITE_OK && rc!=SQLITE_BUSY ){
return rc;
}
}
- pPage = sqlite3GlobalConfig.pcache.xFetch(pCache->pCache, pgno, 2);
+ pPage = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache, pgno, 2);
}
if( pPage ){
- if( !pPage->pData ){
- memset(pPage, 0, sizeof(PgHdr));
- pPage->pData = (void *)&pPage[1];
- pPage->pExtra = (void*)&((char *)pPage->pData)[pCache->szPage];
- memset(pPage->pExtra, 0, pCache->szExtra);
- pPage->pCache = pCache;
- pPage->pgno = pgno;
- }
- assert( pPage->pCache==pCache );
- assert( pPage->pgno==pgno );
- assert( pPage->pData==(void *)&pPage[1] );
- assert( pPage->pExtra==(void *)&((char *)&pPage[1])[pCache->szPage] );
+ pPgHdr = (PgHdr *)pPage->pExtra;
- if( 0==pPage->nRef ){
+ if( !pPgHdr->pPage ){
+ memset(pPgHdr, 0, sizeof(PgHdr));
+ pPgHdr->pPage = pPage;
+ pPgHdr->pData = pPage->pBuf;
+ pPgHdr->pExtra = (void *)&pPgHdr[1];
+ memset(pPgHdr->pExtra, 0, pCache->szExtra);
+ pPgHdr->pCache = pCache;
+ pPgHdr->pgno = pgno;
+ }
+ assert( pPgHdr->pCache==pCache );
+ assert( pPgHdr->pgno==pgno );
+ assert( pPgHdr->pData==pPage->pBuf );
+ assert( pPgHdr->pExtra==(void *)&pPgHdr[1] );
+
+ if( 0==pPgHdr->nRef ){
pCache->nRef++;
}
- pPage->nRef++;
+ pPgHdr->nRef++;
if( pgno==1 ){
- pCache->pPage1 = pPage;
+ pCache->pPage1 = pPgHdr;
}
}
- *ppPage = pPage;
- return (pPage==0 && eCreate) ? SQLITE_NOMEM : SQLITE_OK;
+ *ppPage = pPgHdr;
+ return (pPgHdr==0 && eCreate) ? SQLITE_NOMEM : SQLITE_OK;
}
/*
@@ -33161,7 +36459,7 @@
if( p->pgno==1 ){
pCache->pPage1 = 0;
}
- sqlite3GlobalConfig.pcache.xUnpin(pCache->pCache, p, 1);
+ sqlite3GlobalConfig.pcache2.xUnpin(pCache->pCache, p->pPage, 1);
}
/*
@@ -33219,7 +36517,7 @@
PCache *pCache = p->pCache;
assert( p->nRef>0 );
assert( newPgno>0 );
- sqlite3GlobalConfig.pcache.xRekey(pCache->pCache, p, p->pgno, newPgno);
+ sqlite3GlobalConfig.pcache2.xRekey(pCache->pCache, p->pPage, p->pgno,newPgno);
p->pgno = newPgno;
if( (p->flags&PGHDR_DIRTY) && (p->flags&PGHDR_NEED_SYNC) ){
pcacheRemoveFromDirtyList(p);
@@ -33256,7 +36554,7 @@
memset(pCache->pPage1->pData, 0, pCache->szPage);
pgno = 1;
}
- sqlite3GlobalConfig.pcache.xTruncate(pCache->pCache, pgno+1);
+ sqlite3GlobalConfig.pcache2.xTruncate(pCache->pCache, pgno+1);
}
}
@@ -33265,7 +36563,7 @@
*/
SQLITE_PRIVATE void sqlite3PcacheClose(PCache *pCache){
if( pCache->pCache ){
- sqlite3GlobalConfig.pcache.xDestroy(pCache->pCache);
+ sqlite3GlobalConfig.pcache2.xDestroy(pCache->pCache);
}
}
@@ -33377,7 +36675,7 @@
SQLITE_PRIVATE int sqlite3PcachePagecount(PCache *pCache){
int nPage = 0;
if( pCache->pCache ){
- nPage = sqlite3GlobalConfig.pcache.xPagecount(pCache->pCache);
+ nPage = sqlite3GlobalConfig.pcache2.xPagecount(pCache->pCache);
}
return nPage;
}
@@ -33387,7 +36685,7 @@
** Get the suggested cache-size value.
*/
SQLITE_PRIVATE int sqlite3PcacheGetCachesize(PCache *pCache){
- return pCache->nMax;
+ return numberOfCachePages(pCache);
}
#endif
@@ -33395,9 +36693,19 @@
** Set the suggested cache-size value.
*/
SQLITE_PRIVATE void sqlite3PcacheSetCachesize(PCache *pCache, int mxPage){
- pCache->nMax = mxPage;
+ pCache->szCache = mxPage;
if( pCache->pCache ){
- sqlite3GlobalConfig.pcache.xCachesize(pCache->pCache, mxPage);
+ sqlite3GlobalConfig.pcache2.xCachesize(pCache->pCache,
+ numberOfCachePages(pCache));
+ }
+}
+
+/*
+** Free up as much memory as possible from the page cache.
+*/
+SQLITE_PRIVATE void sqlite3PcacheShrink(PCache *pCache){
+ if( pCache->pCache ){
+ sqlite3GlobalConfig.pcache2.xShrink(pCache->pCache);
}
}
@@ -33440,6 +36748,38 @@
typedef struct PCache1 PCache1;
typedef struct PgHdr1 PgHdr1;
typedef struct PgFreeslot PgFreeslot;
+typedef struct PGroup PGroup;
+
+/* Each page cache (or PCache) belongs to a PGroup. A PGroup is a set
+** of one or more PCaches that are able to recycle each others unpinned
+** pages when they are under memory pressure. A PGroup is an instance of
+** the following object.
+**
+** This page cache implementation works in one of two modes:
+**
+** (1) Every PCache is the sole member of its own PGroup. There is
+** one PGroup per PCache.
+**
+** (2) There is a single global PGroup that all PCaches are a member
+** of.
+**
+** Mode 1 uses more memory (since PCache instances are not able to rob
+** unused pages from other PCaches) but it also operates without a mutex,
+** and is therefore often faster. Mode 2 requires a mutex in order to be
+** threadsafe, but recycles pages more efficiently.
+**
+** For mode (1), PGroup.mutex is NULL. For mode (2) there is only a single
+** PGroup which is the pcache1.grp global variable and its mutex is
+** SQLITE_MUTEX_STATIC_LRU.
+*/
+struct PGroup {
+ sqlite3_mutex *mutex; /* MUTEX_STATIC_LRU or NULL */
+ unsigned int nMaxPage; /* Sum of nMax for purgeable caches */
+ unsigned int nMinPage; /* Sum of nMin for purgeable caches */
+ unsigned int mxPinned; /* nMaxpage + 10 - nMinPage */
+ unsigned int nCurrentPage; /* Number of purgeable pages allocated */
+ PgHdr1 *pLruHead, *pLruTail; /* LRU list of unpinned pages */
+};
/* Each page cache is an instance of the following object. Every
** open database file (including each in-memory database and each
@@ -33452,17 +36792,19 @@
struct PCache1 {
/* Cache configuration parameters. Page size (szPage) and the purgeable
** flag (bPurgeable) are set when the cache is created. nMax may be
- ** modified at any time by a call to the pcache1CacheSize() method.
- ** The global mutex must be held when accessing nMax.
+ ** modified at any time by a call to the pcache1Cachesize() method.
+ ** The PGroup mutex must be held when accessing nMax.
*/
+ PGroup *pGroup; /* PGroup this cache belongs to */
int szPage; /* Size of allocated pages in bytes */
+ int szExtra; /* Size of extra space in bytes */
int bPurgeable; /* True if cache is purgeable */
unsigned int nMin; /* Minimum number of pages reserved */
unsigned int nMax; /* Configured "cache_size" value */
+ unsigned int n90pct; /* nMax*9/10 */
/* Hash table of all pages. The following variables may only be accessed
- ** when the accessor is holding the global mutex (see pcache1EnterMutex()
- ** and pcache1LeaveMutex()).
+ ** when the accessor is holding the PGroup mutex.
*/
unsigned int nRecyclable; /* Number of pages in the LRU list */
unsigned int nPage; /* Total number of pages in apHash */
@@ -33474,11 +36816,12 @@
/*
** Each cache entry is represented by an instance of the following
-** structure. A buffer of PgHdr1.pCache->szPage bytes is allocated
-** directly before this structure in memory (see the PGHDR1_TO_PAGE()
-** macro below).
+** structure. Unless SQLITE_PCACHE_SEPARATE_HEADER is defined, a buffer of
+** PgHdr1.pCache->szPage bytes is allocated directly before this structure
+** in memory.
*/
struct PgHdr1 {
+ sqlite3_pcache_page page;
unsigned int iKey; /* Key value (page number) */
PgHdr1 *pNext; /* Next in hash table chain */
PCache1 *pCache; /* Cache that currently owns this page */
@@ -33498,21 +36841,27 @@
** Global data used by this cache.
*/
static SQLITE_WSD struct PCacheGlobal {
- sqlite3_mutex *mutex; /* static mutex MUTEX_STATIC_LRU */
+ PGroup grp; /* The global PGroup for mode (2) */
- int nMaxPage; /* Sum of nMaxPage for purgeable caches */
- int nMinPage; /* Sum of nMinPage for purgeable caches */
- int nCurrentPage; /* Number of purgeable pages allocated */
- PgHdr1 *pLruHead, *pLruTail; /* LRU list of unpinned pages */
-
- /* Variables related to SQLITE_CONFIG_PAGECACHE settings. */
- int szSlot; /* Size of each free slot */
- int nSlot; /* The number of pcache slots */
- int nFreeSlot; /* Number of unused pcache slots */
- int nReserve; /* Try to keep nFreeSlot above this */
- void *pStart, *pEnd; /* Bounds of pagecache malloc range */
- PgFreeslot *pFree; /* Free page blocks */
- int isInit; /* True if initialized */
+ /* Variables related to SQLITE_CONFIG_PAGECACHE settings. The
+ ** szSlot, nSlot, pStart, pEnd, nReserve, and isInit values are all
+ ** fixed at sqlite3_initialize() time and do not require mutex protection.
+ ** The nFreeSlot and pFree values do require mutex protection.
+ */
+ int isInit; /* True if initialized */
+ int szSlot; /* Size of each free slot */
+ int nSlot; /* The number of pcache slots */
+ int nReserve; /* Try to keep nFreeSlot above this */
+ void *pStart, *pEnd; /* Bounds of pagecache malloc range */
+ /* Above requires no mutex. Use mutex below for variable that follow. */
+ sqlite3_mutex *mutex; /* Mutex for accessing the following: */
+ int nFreeSlot; /* Number of unused pcache slots */
+ PgFreeslot *pFree; /* Free page blocks */
+ /* The following value requires a mutex to change. We skip the mutex on
+ ** reading because (1) most platforms read a 32-bit integer atomically and
+ ** (2) even if an incorrect value is read, no great harm is done since this
+ ** is really just an optimization. */
+ int bUnderPressure; /* True if low on PAGECACHE memory */
} pcache1_g;
/*
@@ -33523,25 +36872,10 @@
#define pcache1 (GLOBAL(struct PCacheGlobal, pcache1_g))
/*
-** When a PgHdr1 structure is allocated, the associated PCache1.szPage
-** bytes of data are located directly before it in memory (i.e. the total
-** size of the allocation is sizeof(PgHdr1)+PCache1.szPage byte). The
-** PGHDR1_TO_PAGE() macro takes a pointer to a PgHdr1 structure as
-** an argument and returns a pointer to the associated block of szPage
-** bytes. The PAGE_TO_PGHDR1() macro does the opposite: its argument is
-** a pointer to a block of szPage bytes of data and the return value is
-** a pointer to the associated PgHdr1 structure.
-**
-** assert( PGHDR1_TO_PAGE(PAGE_TO_PGHDR1(pCache, X))==X );
+** Macros to enter and leave the PCache LRU mutex.
*/
-#define PGHDR1_TO_PAGE(p) (void*)(((char*)p) - p->pCache->szPage)
-#define PAGE_TO_PGHDR1(c, p) (PgHdr1*)(((char*)p) + c->szPage)
-
-/*
-** Macros to enter and leave the global LRU mutex.
-*/
-#define pcache1EnterMutex() sqlite3_mutex_enter(pcache1.mutex)
-#define pcache1LeaveMutex() sqlite3_mutex_leave(pcache1.mutex)
+#define pcache1EnterMutex(X) sqlite3_mutex_enter((X)->mutex)
+#define pcache1LeaveMutex(X) sqlite3_mutex_leave((X)->mutex)
/******************************************************************************/
/******** Page Allocation/SQLITE_CONFIG_PCACHE Related Functions **************/
@@ -33551,6 +36885,9 @@
** supplied to use for the page-cache by passing the SQLITE_CONFIG_PAGECACHE
** verb to sqlite3_config(). Parameter pBuf points to an allocation large
** enough to contain 'n' buffers of 'sz' bytes each.
+**
+** This routine is called from sqlite3_initialize() and so it is guaranteed
+** to be serialized already. There is no need for further mutexing.
*/
SQLITE_PRIVATE void sqlite3PCacheBufferSetup(void *pBuf, int sz, int n){
if( pcache1.isInit ){
@@ -33561,6 +36898,7 @@
pcache1.nReserve = n>90 ? 10 : (n/10 + 1);
pcache1.pStart = pBuf;
pcache1.pFree = 0;
+ pcache1.bUnderPressure = 0;
while( n-- ){
p = (PgFreeslot*)pBuf;
p->pNext = pcache1.pFree;
@@ -33576,32 +36914,36 @@
** configured using sqlite3_config(SQLITE_CONFIG_PAGECACHE) option. If no
** such buffer exists or there is no space left in it, this function falls
** back to sqlite3Malloc().
+**
+** Multiple threads can run this routine at the same time. Global variables
+** in pcache1 need to be protected via mutex.
*/
static void *pcache1Alloc(int nByte){
- void *p;
- assert( sqlite3_mutex_held(pcache1.mutex) );
+ void *p = 0;
+ assert( sqlite3_mutex_notheld(pcache1.grp.mutex) );
sqlite3StatusSet(SQLITE_STATUS_PAGECACHE_SIZE, nByte);
- if( nByte<=pcache1.szSlot && pcache1.pFree ){
- assert( pcache1.isInit );
+ if( nByte<=pcache1.szSlot ){
+ sqlite3_mutex_enter(pcache1.mutex);
p = (PgHdr1 *)pcache1.pFree;
- pcache1.pFree = pcache1.pFree->pNext;
- pcache1.nFreeSlot--;
- assert( pcache1.nFreeSlot>=0 );
- sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, 1);
- }else{
-
- /* Allocate a new buffer using sqlite3Malloc. Before doing so, exit the
- ** global pcache mutex and unlock the pager-cache object pCache. This is
- ** so that if the attempt to allocate a new buffer causes the the
- ** configured soft-heap-limit to be breached, it will be possible to
- ** reclaim memory from this pager-cache.
+ if( p ){
+ pcache1.pFree = pcache1.pFree->pNext;
+ pcache1.nFreeSlot--;
+ pcache1.bUnderPressure = pcache1.nFreeSlot<pcache1.nReserve;
+ assert( pcache1.nFreeSlot>=0 );
+ sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, 1);
+ }
+ sqlite3_mutex_leave(pcache1.mutex);
+ }
+ if( p==0 ){
+ /* Memory is not available in the SQLITE_CONFIG_PAGECACHE pool. Get
+ ** it from sqlite3Malloc instead.
*/
- pcache1LeaveMutex();
p = sqlite3Malloc(nByte);
- pcache1EnterMutex();
if( p ){
int sz = sqlite3MallocSize(p);
+ sqlite3_mutex_enter(pcache1.mutex);
sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, sz);
+ sqlite3_mutex_leave(pcache1.mutex);
}
sqlite3MemdebugSetType(p, MEMTYPE_PCACHE);
}
@@ -33611,25 +36953,30 @@
/*
** Free an allocated buffer obtained from pcache1Alloc().
*/
-static void pcache1Free(void *p){
- assert( sqlite3_mutex_held(pcache1.mutex) );
- if( p==0 ) return;
+static int pcache1Free(void *p){
+ int nFreed = 0;
+ if( p==0 ) return 0;
if( p>=pcache1.pStart && p<pcache1.pEnd ){
PgFreeslot *pSlot;
+ sqlite3_mutex_enter(pcache1.mutex);
sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, -1);
pSlot = (PgFreeslot*)p;
pSlot->pNext = pcache1.pFree;
pcache1.pFree = pSlot;
pcache1.nFreeSlot++;
+ pcache1.bUnderPressure = pcache1.nFreeSlot<pcache1.nReserve;
assert( pcache1.nFreeSlot<=pcache1.nSlot );
+ sqlite3_mutex_leave(pcache1.mutex);
}else{
- int iSize;
assert( sqlite3MemdebugHasType(p, MEMTYPE_PCACHE) );
sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
- iSize = sqlite3MallocSize(p);
- sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, -iSize);
+ nFreed = sqlite3MallocSize(p);
+ sqlite3_mutex_enter(pcache1.mutex);
+ sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, -nFreed);
+ sqlite3_mutex_leave(pcache1.mutex);
sqlite3_free(p);
}
+ return nFreed;
}
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
@@ -33637,7 +36984,6 @@
** Return the size of a pcache allocation
*/
static int pcache1MemSize(void *p){
- assert( sqlite3_mutex_held(pcache1.mutex) );
if( p>=pcache1.pStart && p<pcache1.pEnd ){
return pcache1.szSlot;
}else{
@@ -33655,18 +37001,37 @@
** Allocate a new page object initially associated with cache pCache.
*/
static PgHdr1 *pcache1AllocPage(PCache1 *pCache){
- int nByte = sizeof(PgHdr1) + pCache->szPage;
- void *pPg = pcache1Alloc(nByte);
- PgHdr1 *p;
- if( pPg ){
- p = PAGE_TO_PGHDR1(pCache, pPg);
- if( pCache->bPurgeable ){
- pcache1.nCurrentPage++;
- }
- }else{
- p = 0;
+ PgHdr1 *p = 0;
+ void *pPg;
+
+ /* The group mutex must be released before pcache1Alloc() is called. This
+ ** is because it may call sqlite3_release_memory(), which assumes that
+ ** this mutex is not held. */
+ assert( sqlite3_mutex_held(pCache->pGroup->mutex) );
+ pcache1LeaveMutex(pCache->pGroup);
+#ifdef SQLITE_PCACHE_SEPARATE_HEADER
+ pPg = pcache1Alloc(pCache->szPage);
+ p = sqlite3Malloc(sizeof(PgHdr1) + pCache->szExtra);
+ if( !pPg || !p ){
+ pcache1Free(pPg);
+ sqlite3_free(p);
+ pPg = 0;
}
- return p;
+#else
+ pPg = pcache1Alloc(sizeof(PgHdr1) + pCache->szPage + pCache->szExtra);
+ p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage];
+#endif
+ pcache1EnterMutex(pCache->pGroup);
+
+ if( pPg ){
+ p->page.pBuf = pPg;
+ p->page.pExtra = &p[1];
+ if( pCache->bPurgeable ){
+ pCache->pGroup->nCurrentPage++;
+ }
+ return p;
+ }
+ return 0;
}
/*
@@ -33678,10 +37043,15 @@
*/
static void pcache1FreePage(PgHdr1 *p){
if( ALWAYS(p) ){
- if( p->pCache->bPurgeable ){
- pcache1.nCurrentPage--;
+ PCache1 *pCache = p->pCache;
+ assert( sqlite3_mutex_held(p->pCache->pGroup->mutex) );
+ pcache1Free(p->page.pBuf);
+#ifdef SQLITE_PCACHE_SEPARATE_HEADER
+ sqlite3_free(p);
+#endif
+ if( pCache->bPurgeable ){
+ pCache->pGroup->nCurrentPage--;
}
- pcache1Free(PGHDR1_TO_PAGE(p));
}
}
@@ -33691,20 +37061,14 @@
** exists, this function falls back to sqlite3Malloc().
*/
SQLITE_PRIVATE void *sqlite3PageMalloc(int sz){
- void *p;
- pcache1EnterMutex();
- p = pcache1Alloc(sz);
- pcache1LeaveMutex();
- return p;
+ return pcache1Alloc(sz);
}
/*
** Free an allocated buffer obtained from sqlite3PageMalloc().
*/
SQLITE_PRIVATE void sqlite3PageFree(void *p){
- pcache1EnterMutex();
pcache1Free(p);
- pcache1LeaveMutex();
}
@@ -33719,15 +37083,14 @@
** for all page cache needs and we should not need to spill the
** allocation onto the heap.
**
-** Or, the heap is used for all page cache memory put the heap is
+** Or, the heap is used for all page cache memory but the heap is
** under memory pressure, then again it is desirable to avoid
** allocating a new page cache entry in order to avoid stressing
** the heap even further.
*/
static int pcache1UnderMemoryPressure(PCache1 *pCache){
- assert( sqlite3_mutex_held(pcache1.mutex) );
- if( pcache1.nSlot && pCache->szPage<=pcache1.szSlot ){
- return pcache1.nFreeSlot<pcache1.nReserve;
+ if( pcache1.nSlot && (pCache->szPage+pCache->szExtra)<=pcache1.szSlot ){
+ return pcache1.bUnderPressure;
}else{
return sqlite3HeapNearlyFull();
}
@@ -33740,25 +37103,25 @@
** This function is used to resize the hash table used by the cache passed
** as the first argument.
**
-** The global mutex must be held when this function is called.
+** The PCache mutex must be held when this function is called.
*/
static int pcache1ResizeHash(PCache1 *p){
PgHdr1 **apNew;
unsigned int nNew;
unsigned int i;
- assert( sqlite3_mutex_held(pcache1.mutex) );
+ assert( sqlite3_mutex_held(p->pGroup->mutex) );
nNew = p->nHash*2;
if( nNew<256 ){
nNew = 256;
}
- pcache1LeaveMutex();
+ pcache1LeaveMutex(p->pGroup);
if( p->nHash ){ sqlite3BeginBenignMalloc(); }
apNew = (PgHdr1 **)sqlite3_malloc(sizeof(PgHdr1 *)*nNew);
if( p->nHash ){ sqlite3EndBenignMalloc(); }
- pcache1EnterMutex();
+ pcache1EnterMutex(p->pGroup);
if( apNew ){
memset(apNew, 0, sizeof(PgHdr1 *)*nNew);
for(i=0; i<p->nHash; i++){
@@ -33781,25 +37144,33 @@
/*
** This function is used internally to remove the page pPage from the
-** global LRU list, if is part of it. If pPage is not part of the global
+** PGroup LRU list, if is part of it. If pPage is not part of the PGroup
** LRU list, then this function is a no-op.
**
-** The global mutex must be held when this function is called.
+** The PGroup mutex must be held when this function is called.
+**
+** If pPage is NULL then this routine is a no-op.
*/
static void pcache1PinPage(PgHdr1 *pPage){
- assert( sqlite3_mutex_held(pcache1.mutex) );
- if( pPage && (pPage->pLruNext || pPage==pcache1.pLruTail) ){
+ PCache1 *pCache;
+ PGroup *pGroup;
+
+ if( pPage==0 ) return;
+ pCache = pPage->pCache;
+ pGroup = pCache->pGroup;
+ assert( sqlite3_mutex_held(pGroup->mutex) );
+ if( pPage->pLruNext || pPage==pGroup->pLruTail ){
if( pPage->pLruPrev ){
pPage->pLruPrev->pLruNext = pPage->pLruNext;
}
if( pPage->pLruNext ){
pPage->pLruNext->pLruPrev = pPage->pLruPrev;
}
- if( pcache1.pLruHead==pPage ){
- pcache1.pLruHead = pPage->pLruNext;
+ if( pGroup->pLruHead==pPage ){
+ pGroup->pLruHead = pPage->pLruNext;
}
- if( pcache1.pLruTail==pPage ){
- pcache1.pLruTail = pPage->pLruPrev;
+ if( pGroup->pLruTail==pPage ){
+ pGroup->pLruTail = pPage->pLruPrev;
}
pPage->pLruNext = 0;
pPage->pLruPrev = 0;
@@ -33812,13 +37183,14 @@
** Remove the page supplied as an argument from the hash table
** (PCache1.apHash structure) that it is currently stored in.
**
-** The global mutex must be held when this function is called.
+** The PGroup mutex must be held when this function is called.
*/
static void pcache1RemoveFromHash(PgHdr1 *pPage){
unsigned int h;
PCache1 *pCache = pPage->pCache;
PgHdr1 **pp;
+ assert( sqlite3_mutex_held(pCache->pGroup->mutex) );
h = pPage->iKey % pCache->nHash;
for(pp=&pCache->apHash[h]; (*pp)!=pPage; pp=&(*pp)->pNext);
*pp = (*pp)->pNext;
@@ -33827,13 +37199,14 @@
}
/*
-** If there are currently more than pcache.nMaxPage pages allocated, try
-** to recycle pages to reduce the number allocated to pcache.nMaxPage.
+** If there are currently more than nMaxPage pages allocated, try
+** to recycle pages to reduce the number allocated to nMaxPage.
*/
-static void pcache1EnforceMaxPage(void){
- assert( sqlite3_mutex_held(pcache1.mutex) );
- while( pcache1.nCurrentPage>pcache1.nMaxPage && pcache1.pLruTail ){
- PgHdr1 *p = pcache1.pLruTail;
+static void pcache1EnforceMaxPage(PGroup *pGroup){
+ assert( sqlite3_mutex_held(pGroup->mutex) );
+ while( pGroup->nCurrentPage>pGroup->nMaxPage && pGroup->pLruTail ){
+ PgHdr1 *p = pGroup->pLruTail;
+ assert( p->pCache->pGroup==pGroup );
pcache1PinPage(p);
pcache1RemoveFromHash(p);
pcache1FreePage(p);
@@ -33845,15 +37218,15 @@
** greater than or equal to iLimit. Any pinned pages that meet this
** criteria are unpinned before they are discarded.
**
-** The global mutex must be held when this function is called.
+** The PCache mutex must be held when this function is called.
*/
static void pcache1TruncateUnsafe(
- PCache1 *pCache,
- unsigned int iLimit
+ PCache1 *pCache, /* The cache to truncate */
+ unsigned int iLimit /* Drop pages with this pgno or larger */
){
- TESTONLY( unsigned int nPage = 0; ) /* Used to assert pCache->nPage is correct */
+ TESTONLY( unsigned int nPage = 0; ) /* To assert pCache->nPage is correct */
unsigned int h;
- assert( sqlite3_mutex_held(pcache1.mutex) );
+ assert( sqlite3_mutex_held(pCache->pGroup->mutex) );
for(h=0; h<pCache->nHash; h++){
PgHdr1 **pp = &pCache->apHash[h];
PgHdr1 *pPage;
@@ -33883,8 +37256,10 @@
assert( pcache1.isInit==0 );
memset(&pcache1, 0, sizeof(pcache1));
if( sqlite3GlobalConfig.bCoreMutex ){
- pcache1.mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_LRU);
+ pcache1.grp.mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_LRU);
+ pcache1.mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_PMEM);
}
+ pcache1.grp.mxPinned = 10;
pcache1.isInit = 1;
return SQLITE_OK;
}
@@ -33905,19 +37280,52 @@
**
** Allocate a new cache.
*/
-static sqlite3_pcache *pcache1Create(int szPage, int bPurgeable){
- PCache1 *pCache;
+static sqlite3_pcache *pcache1Create(int szPage, int szExtra, int bPurgeable){
+ PCache1 *pCache; /* The newly created page cache */
+ PGroup *pGroup; /* The group the new page cache will belong to */
+ int sz; /* Bytes of memory required to allocate the new cache */
- pCache = (PCache1 *)sqlite3_malloc(sizeof(PCache1));
+ /*
+ ** The seperateCache variable is true if each PCache has its own private
+ ** PGroup. In other words, separateCache is true for mode (1) where no
+ ** mutexing is required.
+ **
+ ** * Always use a unified cache (mode-2) if ENABLE_MEMORY_MANAGEMENT
+ **
+ ** * Always use a unified cache in single-threaded applications
+ **
+ ** * Otherwise (if multi-threaded and ENABLE_MEMORY_MANAGEMENT is off)
+ ** use separate caches (mode-1)
+ */
+#if defined(SQLITE_ENABLE_MEMORY_MANAGEMENT) || SQLITE_THREADSAFE==0
+ const int separateCache = 0;
+#else
+ int separateCache = sqlite3GlobalConfig.bCoreMutex>0;
+#endif
+
+ assert( (szPage & (szPage-1))==0 && szPage>=512 && szPage<=65536 );
+ assert( szExtra < 300 );
+
+ sz = sizeof(PCache1) + sizeof(PGroup)*separateCache;
+ pCache = (PCache1 *)sqlite3_malloc(sz);
if( pCache ){
- memset(pCache, 0, sizeof(PCache1));
+ memset(pCache, 0, sz);
+ if( separateCache ){
+ pGroup = (PGroup*)&pCache[1];
+ pGroup->mxPinned = 10;
+ }else{
+ pGroup = &pcache1.grp;
+ }
+ pCache->pGroup = pGroup;
pCache->szPage = szPage;
+ pCache->szExtra = szExtra;
pCache->bPurgeable = (bPurgeable ? 1 : 0);
if( bPurgeable ){
pCache->nMin = 10;
- pcache1EnterMutex();
- pcache1.nMinPage += pCache->nMin;
- pcache1LeaveMutex();
+ pcache1EnterMutex(pGroup);
+ pGroup->nMinPage += pCache->nMin;
+ pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage;
+ pcache1LeaveMutex(pGroup);
}
}
return (sqlite3_pcache *)pCache;
@@ -33931,11 +37339,33 @@
static void pcache1Cachesize(sqlite3_pcache *p, int nMax){
PCache1 *pCache = (PCache1 *)p;
if( pCache->bPurgeable ){
- pcache1EnterMutex();
- pcache1.nMaxPage += (nMax - pCache->nMax);
+ PGroup *pGroup = pCache->pGroup;
+ pcache1EnterMutex(pGroup);
+ pGroup->nMaxPage += (nMax - pCache->nMax);
+ pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage;
pCache->nMax = nMax;
- pcache1EnforceMaxPage();
- pcache1LeaveMutex();
+ pCache->n90pct = pCache->nMax*9/10;
+ pcache1EnforceMaxPage(pGroup);
+ pcache1LeaveMutex(pGroup);
+ }
+}
+
+/*
+** Implementation of the sqlite3_pcache.xShrink method.
+**
+** Free up as much memory as possible.
+*/
+static void pcache1Shrink(sqlite3_pcache *p){
+ PCache1 *pCache = (PCache1*)p;
+ if( pCache->bPurgeable ){
+ PGroup *pGroup = pCache->pGroup;
+ int savedMaxPage;
+ pcache1EnterMutex(pGroup);
+ savedMaxPage = pGroup->nMaxPage;
+ pGroup->nMaxPage = 0;
+ pcache1EnforceMaxPage(pGroup);
+ pGroup->nMaxPage = savedMaxPage;
+ pcache1LeaveMutex(pGroup);
}
}
@@ -33944,9 +37374,10 @@
*/
static int pcache1Pagecount(sqlite3_pcache *p){
int n;
- pcache1EnterMutex();
- n = ((PCache1 *)p)->nPage;
- pcache1LeaveMutex();
+ PCache1 *pCache = (PCache1*)p;
+ pcache1EnterMutex(pCache->pGroup);
+ n = pCache->nPage;
+ pcache1LeaveMutex(pCache->pGroup);
return n;
}
@@ -33963,7 +37394,7 @@
** For a non-purgeable cache (a cache used as the storage for an in-memory
** database) there is really no difference between createFlag 1 and 2. So
** the calling function (pcache.c) will never have a createFlag of 1 on
-** a non-purgable cache.
+** a non-purgeable cache.
**
** There are three different approaches to obtaining space for a page,
** depending on the value of parameter createFlag (which may be 0, 1 or 2).
@@ -34004,31 +37435,53 @@
**
** 5. Otherwise, allocate and return a new page buffer.
*/
-static void *pcache1Fetch(sqlite3_pcache *p, unsigned int iKey, int createFlag){
+static sqlite3_pcache_page *pcache1Fetch(
+ sqlite3_pcache *p,
+ unsigned int iKey,
+ int createFlag
+){
unsigned int nPinned;
PCache1 *pCache = (PCache1 *)p;
+ PGroup *pGroup;
PgHdr1 *pPage = 0;
assert( pCache->bPurgeable || createFlag!=1 );
- pcache1EnterMutex();
- if( createFlag==1 ) sqlite3BeginBenignMalloc();
+ assert( pCache->bPurgeable || pCache->nMin==0 );
+ assert( pCache->bPurgeable==0 || pCache->nMin==10 );
+ assert( pCache->nMin==0 || pCache->bPurgeable );
+ pcache1EnterMutex(pGroup = pCache->pGroup);
- /* Search the hash table for an existing entry. */
+ /* Step 1: Search the hash table for an existing entry. */
if( pCache->nHash>0 ){
unsigned int h = iKey % pCache->nHash;
for(pPage=pCache->apHash[h]; pPage&&pPage->iKey!=iKey; pPage=pPage->pNext);
}
+ /* Step 2: Abort if no existing page is found and createFlag is 0 */
if( pPage || createFlag==0 ){
pcache1PinPage(pPage);
goto fetch_out;
}
- /* Step 3 of header comment. */
+ /* The pGroup local variable will normally be initialized by the
+ ** pcache1EnterMutex() macro above. But if SQLITE_MUTEX_OMIT is defined,
+ ** then pcache1EnterMutex() is a no-op, so we have to initialize the
+ ** local variable here. Delaying the initialization of pGroup is an
+ ** optimization: The common case is to exit the module before reaching
+ ** this point.
+ */
+#ifdef SQLITE_MUTEX_OMIT
+ pGroup = pCache->pGroup;
+#endif
+
+ /* Step 3: Abort if createFlag is 1 but the cache is nearly full */
+ assert( pCache->nPage >= pCache->nRecyclable );
nPinned = pCache->nPage - pCache->nRecyclable;
+ assert( pGroup->mxPinned == pGroup->nMaxPage + 10 - pGroup->nMinPage );
+ assert( pCache->n90pct == pCache->nMax*9/10 );
if( createFlag==1 && (
- nPinned>=(pcache1.nMaxPage+pCache->nMin-pcache1.nMinPage)
- || nPinned>=(pCache->nMax * 9 / 10)
+ nPinned>=pGroup->mxPinned
+ || nPinned>=pCache->n90pct
|| pcache1UnderMemoryPressure(pCache)
)){
goto fetch_out;
@@ -34038,20 +37491,30 @@
goto fetch_out;
}
- /* Step 4. Try to recycle a page buffer if appropriate. */
- if( pCache->bPurgeable && pcache1.pLruTail && (
+ /* Step 4. Try to recycle a page. */
+ if( pCache->bPurgeable && pGroup->pLruTail && (
(pCache->nPage+1>=pCache->nMax)
- || pcache1.nCurrentPage>=pcache1.nMaxPage
+ || pGroup->nCurrentPage>=pGroup->nMaxPage
|| pcache1UnderMemoryPressure(pCache)
)){
- pPage = pcache1.pLruTail;
+ PCache1 *pOther;
+ pPage = pGroup->pLruTail;
pcache1RemoveFromHash(pPage);
pcache1PinPage(pPage);
- if( pPage->pCache->szPage!=pCache->szPage ){
+ pOther = pPage->pCache;
+
+ /* We want to verify that szPage and szExtra are the same for pOther
+ ** and pCache. Assert that we can verify this by comparing sums. */
+ assert( (pCache->szPage & (pCache->szPage-1))==0 && pCache->szPage>=512 );
+ assert( pCache->szExtra<512 );
+ assert( (pOther->szPage & (pOther->szPage-1))==0 && pOther->szPage>=512 );
+ assert( pOther->szExtra<512 );
+
+ if( pOther->szPage+pOther->szExtra != pCache->szPage+pCache->szExtra ){
pcache1FreePage(pPage);
pPage = 0;
}else{
- pcache1.nCurrentPage -= (pPage->pCache->bPurgeable - pCache->bPurgeable);
+ pGroup->nCurrentPage -= (pOther->bPurgeable - pCache->bPurgeable);
}
}
@@ -34059,7 +37522,9 @@
** attempt to allocate a new one.
*/
if( !pPage ){
+ if( createFlag==1 ) sqlite3BeginBenignMalloc();
pPage = pcache1AllocPage(pCache);
+ if( createFlag==1 ) sqlite3EndBenignMalloc();
}
if( pPage ){
@@ -34070,7 +37535,7 @@
pPage->pCache = pCache;
pPage->pLruPrev = 0;
pPage->pLruNext = 0;
- *(void **)(PGHDR1_TO_PAGE(pPage)) = 0;
+ *(void **)pPage->page.pExtra = 0;
pCache->apHash[h] = pPage;
}
@@ -34078,9 +37543,8 @@
if( pPage && iKey>pCache->iMaxKey ){
pCache->iMaxKey = iKey;
}
- if( createFlag==1 ) sqlite3EndBenignMalloc();
- pcache1LeaveMutex();
- return (pPage ? PGHDR1_TO_PAGE(pPage) : 0);
+ pcache1LeaveMutex(pGroup);
+ return &pPage->page;
}
@@ -34089,40 +37553,41 @@
**
** Mark a page as unpinned (eligible for asynchronous recycling).
*/
-static void pcache1Unpin(sqlite3_pcache *p, void *pPg, int reuseUnlikely){
+static void pcache1Unpin(
+ sqlite3_pcache *p,
+ sqlite3_pcache_page *pPg,
+ int reuseUnlikely
+){
PCache1 *pCache = (PCache1 *)p;
- PgHdr1 *pPage = PAGE_TO_PGHDR1(pCache, pPg);
+ PgHdr1 *pPage = (PgHdr1 *)pPg;
+ PGroup *pGroup = pCache->pGroup;
assert( pPage->pCache==pCache );
- pcache1EnterMutex();
+ pcache1EnterMutex(pGroup);
/* It is an error to call this function if the page is already
- ** part of the global LRU list.
+ ** part of the PGroup LRU list.
*/
assert( pPage->pLruPrev==0 && pPage->pLruNext==0 );
- assert( pcache1.pLruHead!=pPage && pcache1.pLruTail!=pPage );
+ assert( pGroup->pLruHead!=pPage && pGroup->pLruTail!=pPage );
- if( reuseUnlikely || pcache1.nCurrentPage>pcache1.nMaxPage ){
+ if( reuseUnlikely || pGroup->nCurrentPage>pGroup->nMaxPage ){
pcache1RemoveFromHash(pPage);
pcache1FreePage(pPage);
}else{
- /* Add the page to the global LRU list. Normally, the page is added to
- ** the head of the list (last page to be recycled). However, if the
- ** reuseUnlikely flag passed to this function is true, the page is added
- ** to the tail of the list (first page to be recycled).
- */
- if( pcache1.pLruHead ){
- pcache1.pLruHead->pLruPrev = pPage;
- pPage->pLruNext = pcache1.pLruHead;
- pcache1.pLruHead = pPage;
+ /* Add the page to the PGroup LRU list. */
+ if( pGroup->pLruHead ){
+ pGroup->pLruHead->pLruPrev = pPage;
+ pPage->pLruNext = pGroup->pLruHead;
+ pGroup->pLruHead = pPage;
}else{
- pcache1.pLruTail = pPage;
- pcache1.pLruHead = pPage;
+ pGroup->pLruTail = pPage;
+ pGroup->pLruHead = pPage;
}
pCache->nRecyclable++;
}
- pcache1LeaveMutex();
+ pcache1LeaveMutex(pCache->pGroup);
}
/*
@@ -34130,18 +37595,18 @@
*/
static void pcache1Rekey(
sqlite3_pcache *p,
- void *pPg,
+ sqlite3_pcache_page *pPg,
unsigned int iOld,
unsigned int iNew
){
PCache1 *pCache = (PCache1 *)p;
- PgHdr1 *pPage = PAGE_TO_PGHDR1(pCache, pPg);
+ PgHdr1 *pPage = (PgHdr1 *)pPg;
PgHdr1 **pp;
unsigned int h;
assert( pPage->iKey==iOld );
assert( pPage->pCache==pCache );
- pcache1EnterMutex();
+ pcache1EnterMutex(pCache->pGroup);
h = iOld%pCache->nHash;
pp = &pCache->apHash[h];
@@ -34158,7 +37623,7 @@
pCache->iMaxKey = iNew;
}
- pcache1LeaveMutex();
+ pcache1LeaveMutex(pCache->pGroup);
}
/*
@@ -34170,12 +37635,12 @@
*/
static void pcache1Truncate(sqlite3_pcache *p, unsigned int iLimit){
PCache1 *pCache = (PCache1 *)p;
- pcache1EnterMutex();
+ pcache1EnterMutex(pCache->pGroup);
if( iLimit<=pCache->iMaxKey ){
pcache1TruncateUnsafe(pCache, iLimit);
pCache->iMaxKey = iLimit-1;
}
- pcache1LeaveMutex();
+ pcache1LeaveMutex(pCache->pGroup);
}
/*
@@ -34185,13 +37650,17 @@
*/
static void pcache1Destroy(sqlite3_pcache *p){
PCache1 *pCache = (PCache1 *)p;
+ PGroup *pGroup = pCache->pGroup;
assert( pCache->bPurgeable || (pCache->nMax==0 && pCache->nMin==0) );
- pcache1EnterMutex();
+ pcache1EnterMutex(pGroup);
pcache1TruncateUnsafe(pCache, 0);
- pcache1.nMaxPage -= pCache->nMax;
- pcache1.nMinPage -= pCache->nMin;
- pcache1EnforceMaxPage();
- pcache1LeaveMutex();
+ assert( pGroup->nMaxPage >= pCache->nMax );
+ pGroup->nMaxPage -= pCache->nMax;
+ assert( pGroup->nMinPage >= pCache->nMin );
+ pGroup->nMinPage -= pCache->nMin;
+ pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage;
+ pcache1EnforceMaxPage(pGroup);
+ pcache1LeaveMutex(pGroup);
sqlite3_free(pCache->apHash);
sqlite3_free(pCache);
}
@@ -34202,7 +37671,8 @@
** already provided an alternative.
*/
SQLITE_PRIVATE void sqlite3PCacheSetDefault(void){
- static const sqlite3_pcache_methods defaultMethods = {
+ static const sqlite3_pcache_methods2 defaultMethods = {
+ 1, /* iVersion */
0, /* pArg */
pcache1Init, /* xInit */
pcache1Shutdown, /* xShutdown */
@@ -34213,9 +37683,10 @@
pcache1Unpin, /* xUnpin */
pcache1Rekey, /* xRekey */
pcache1Truncate, /* xTruncate */
- pcache1Destroy /* xDestroy */
+ pcache1Destroy, /* xDestroy */
+ pcache1Shrink /* xShrink */
};
- sqlite3_config(SQLITE_CONFIG_PCACHE, &defaultMethods);
+ sqlite3_config(SQLITE_CONFIG_PCACHE2, &defaultMethods);
}
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
@@ -34230,16 +37701,21 @@
*/
SQLITE_PRIVATE int sqlite3PcacheReleaseMemory(int nReq){
int nFree = 0;
+ assert( sqlite3_mutex_notheld(pcache1.grp.mutex) );
+ assert( sqlite3_mutex_notheld(pcache1.mutex) );
if( pcache1.pStart==0 ){
PgHdr1 *p;
- pcache1EnterMutex();
- while( (nReq<0 || nFree<nReq) && ((p=pcache1.pLruTail)!=0) ){
- nFree += pcache1MemSize(PGHDR1_TO_PAGE(p));
+ pcache1EnterMutex(&pcache1.grp);
+ while( (nReq<0 || nFree<nReq) && ((p=pcache1.grp.pLruTail)!=0) ){
+ nFree += pcache1MemSize(p->page.pBuf);
+#ifdef SQLITE_PCACHE_SEPARATE_HEADER
+ nFree += sqlite3MemSize(p);
+#endif
pcache1PinPage(p);
pcache1RemoveFromHash(p);
pcache1FreePage(p);
}
- pcache1LeaveMutex();
+ pcache1LeaveMutex(&pcache1.grp);
}
return nFree;
}
@@ -34258,12 +37734,12 @@
){
PgHdr1 *p;
int nRecyclable = 0;
- for(p=pcache1.pLruHead; p; p=p->pLruNext){
+ for(p=pcache1.grp.pLruHead; p; p=p->pLruNext){
nRecyclable++;
}
- *pnCurrent = pcache1.nCurrentPage;
- *pnMax = pcache1.nMaxPage;
- *pnMin = pcache1.nMinPage;
+ *pnCurrent = pcache1.grp.nCurrentPage;
+ *pnMax = (int)pcache1.grp.nMaxPage;
+ *pnMin = (int)pcache1.grp.nMinPage;
*pnRecyclable = nRecyclable;
}
#endif
@@ -34737,23 +38213,30 @@
#define _WAL_H_
+/* Additional values that can be added to the sync_flags argument of
+** sqlite3WalFrames():
+*/
+#define WAL_SYNC_TRANSACTIONS 0x20 /* Sync at the end of each transaction */
+#define SQLITE_SYNC_MASK 0x13 /* Mask off the SQLITE_SYNC_* values */
+
#ifdef SQLITE_OMIT_WAL
-# define sqlite3WalOpen(x,y,z) 0
-# define sqlite3WalClose(w,x,y,z) 0
-# define sqlite3WalBeginReadTransaction(y,z) 0
+# define sqlite3WalOpen(x,y,z) 0
+# define sqlite3WalLimit(x,y)
+# define sqlite3WalClose(w,x,y,z) 0
+# define sqlite3WalBeginReadTransaction(y,z) 0
# define sqlite3WalEndReadTransaction(z)
-# define sqlite3WalRead(v,w,x,y,z) 0
-# define sqlite3WalDbsize(y) 0
-# define sqlite3WalBeginWriteTransaction(y) 0
-# define sqlite3WalEndWriteTransaction(x) 0
-# define sqlite3WalUndo(x,y,z) 0
+# define sqlite3WalRead(v,w,x,y,z) 0
+# define sqlite3WalDbsize(y) 0
+# define sqlite3WalBeginWriteTransaction(y) 0
+# define sqlite3WalEndWriteTransaction(x) 0
+# define sqlite3WalUndo(x,y,z) 0
# define sqlite3WalSavepoint(y,z)
-# define sqlite3WalSavepointUndo(y,z) 0
-# define sqlite3WalFrames(u,v,w,x,y,z) 0
-# define sqlite3WalCheckpoint(u,v,w,x) 0
-# define sqlite3WalCallback(z) 0
-# define sqlite3WalExclusiveMode(y,z) 0
-# define sqlite3WalHeapMemory(z) 0
+# define sqlite3WalSavepointUndo(y,z) 0
+# define sqlite3WalFrames(u,v,w,x,y,z) 0
+# define sqlite3WalCheckpoint(r,s,t,u,v,w,x,y,z) 0
+# define sqlite3WalCallback(z) 0
+# define sqlite3WalExclusiveMode(y,z) 0
+# define sqlite3WalHeapMemory(z) 0
#else
#define WAL_SAVEPOINT_NDATA 4
@@ -34764,9 +38247,12 @@
typedef struct Wal Wal;
/* Open and close a connection to a write-ahead log. */
-SQLITE_PRIVATE int sqlite3WalOpen(sqlite3_vfs*, sqlite3_file*, const char *zName, int, Wal**);
+SQLITE_PRIVATE int sqlite3WalOpen(sqlite3_vfs*, sqlite3_file*, const char *, int, i64, Wal**);
SQLITE_PRIVATE int sqlite3WalClose(Wal *pWal, int sync_flags, int, u8 *);
+/* Set the limiting size of a WAL file. */
+SQLITE_PRIVATE void sqlite3WalLimit(Wal*, i64);
+
/* Used by readers to open (lock) and close (unlock) a snapshot. A
** snapshot is like a read-transaction. It is the state of the database
** at an instant in time. sqlite3WalOpenSnapshot gets a read lock and
@@ -34804,9 +38290,14 @@
/* Copy pages from the log to the database file */
SQLITE_PRIVATE int sqlite3WalCheckpoint(
Wal *pWal, /* Write-ahead log connection */
+ int eMode, /* One of PASSIVE, FULL and RESTART */
+ int (*xBusy)(void*), /* Function to call when busy */
+ void *pBusyArg, /* Context argument for xBusyHandler */
int sync_flags, /* Flags to sync db file with (or 0) */
int nBuf, /* Size of buffer nBuf */
- u8 *zBuf /* Temporary buffer to use */
+ u8 *zBuf, /* Temporary buffer to use */
+ int *pnLog, /* OUT: Number of frames in WAL */
+ int *pnCkpt /* OUT: Number of backfilled frames in WAL */
);
/* Return the value to pass to a sqlite3_wal_hook callback, the
@@ -35427,6 +38918,7 @@
u8 noSync; /* Do not sync the journal if true */
u8 fullSync; /* Do extra syncs of the journal for robustness */
u8 ckptSyncFlags; /* SYNC_NORMAL or SYNC_FULL for checkpoint */
+ u8 walSyncFlags; /* SYNC_NORMAL or SYNC_FULL for wal writes */
u8 syncFlags; /* SYNC_NORMAL or SYNC_FULL otherwise */
u8 tempFile; /* zFilename is a temporary file */
u8 readOnly; /* True for a read-only database */
@@ -35481,8 +38973,8 @@
char *zJournal; /* Name of the journal file */
int (*xBusyHandler)(void*); /* Function to call when busy */
void *pBusyHandlerArg; /* Context argument for xBusyHandler */
+ int nHit, nMiss; /* Total cache hits and misses */
#ifdef SQLITE_TEST
- int nHit, nMiss; /* Cache hits and missing */
int nRead, nWrite; /* Database pages read/written */
#endif
void (*xReiniter)(DbPage*); /* Call this routine when reloading pages */
@@ -35597,7 +39089,7 @@
#else
# define pagerUseWal(x) 0
# define pagerRollbackWal(x) 0
-# define pagerWalFrames(v,w,x,y,z) 0
+# define pagerWalFrames(v,w,x,y) 0
# define pagerOpenWalIfPresent(z) SQLITE_OK
# define pagerBeginReadTransaction(z) SQLITE_OK
#endif
@@ -37288,15 +40780,20 @@
&& (pPager->eState>=PAGER_WRITER_DBMOD || pPager->eState==PAGER_OPEN)
){
i64 currentSize, newSize;
+ int szPage = pPager->pageSize;
assert( pPager->eLock==EXCLUSIVE_LOCK );
/* TODO: Is it safe to use Pager.dbFileSize here? */
rc = sqlite3OsFileSize(pPager->fd, ¤tSize);
- newSize = pPager->pageSize*(i64)nPage;
+ newSize = szPage*(i64)nPage;
if( rc==SQLITE_OK && currentSize!=newSize ){
if( currentSize>newSize ){
rc = sqlite3OsTruncate(pPager->fd, newSize);
- }else{
- rc = sqlite3OsWrite(pPager->fd, "", 1, newSize-1);
+ }else if( (currentSize+szPage)<=newSize ){
+ char *pTmp = pPager->pTmpSpace;
+ memset(pTmp, 0, szPage);
+ testcase( (newSize-szPage) == currentSize );
+ testcase( (newSize-szPage) > currentSize );
+ rc = sqlite3OsWrite(pPager->fd, pTmp, szPage, newSize-szPage);
}
if( rc==SQLITE_OK ){
pPager->dbFileSize = nPage;
@@ -37319,23 +40816,36 @@
** the value returned by the xSectorSize() method rounded up to 32 if
** it is less than 32, or rounded down to MAX_SECTOR_SIZE if it
** is greater than MAX_SECTOR_SIZE.
+**
+** If the file has the SQLITE_IOCAP_POWERSAFE_OVERWRITE property, then set
+** the effective sector size to its minimum value (512). The purpose of
+** pPager->sectorSize is to define the "blast radius" of bytes that
+** might change if a crash occurs while writing to a single byte in
+** that range. But with POWERSAFE_OVERWRITE, the blast radius is zero
+** (that is what POWERSAFE_OVERWRITE means), so we minimize the sector
+** size. For backwards compatibility of the rollback journal file format,
+** we cannot reduce the effective sector size below 512.
*/
static void setSectorSize(Pager *pPager){
assert( isOpen(pPager->fd) || pPager->tempFile );
- if( !pPager->tempFile ){
+ if( pPager->tempFile
+ || (sqlite3OsDeviceCharacteristics(pPager->fd) &
+ SQLITE_IOCAP_POWERSAFE_OVERWRITE)!=0
+ ){
/* Sector size doesn't matter for temporary files. Also, the file
** may not have been opened yet, in which case the OsSectorSize()
- ** call will segfault.
- */
- pPager->sectorSize = sqlite3OsSectorSize(pPager->fd);
- }
- if( pPager->sectorSize<32 ){
+ ** call will segfault. */
pPager->sectorSize = 512;
- }
- if( pPager->sectorSize>MAX_SECTOR_SIZE ){
- assert( MAX_SECTOR_SIZE>=512 );
- pPager->sectorSize = MAX_SECTOR_SIZE;
+ }else{
+ pPager->sectorSize = sqlite3OsSectorSize(pPager->fd);
+ if( pPager->sectorSize<32 ){
+ pPager->sectorSize = 512;
+ }
+ if( pPager->sectorSize>MAX_SECTOR_SIZE ){
+ assert( MAX_SECTOR_SIZE>=512 );
+ pPager->sectorSize = MAX_SECTOR_SIZE;
+ }
}
}
@@ -37508,7 +41018,6 @@
rc = pager_playback_one_page(pPager,&pPager->journalOff,0,1,0);
if( rc!=SQLITE_OK ){
if( rc==SQLITE_DONE ){
- rc = SQLITE_OK;
pPager->journalOff = szJ;
break;
}else if( rc==SQLITE_IOERR_SHORT_READ ){
@@ -37539,10 +41048,11 @@
** SQLITE_FCNTL_DB_UNCHANGED file-control method to disable the
** assertion that the transaction counter was modified.
*/
- assert(
- pPager->fd->pMethods==0 ||
- sqlite3OsFileControl(pPager->fd,SQLITE_FCNTL_DB_UNCHANGED,0)>=SQLITE_OK
- );
+#ifdef SQLITE_DEBUG
+ if( pPager->fd->pMethods ){
+ sqlite3OsFileControlHint(pPager->fd,SQLITE_FCNTL_DB_UNCHANGED,0);
+ }
+#endif
/* If this playback is happening automatically as a result of an IO or
** malloc error that occurred after the change-counter was updated but
@@ -37560,10 +41070,10 @@
rc = readMasterJournal(pPager->jfd, zMaster, pPager->pVfs->mxPathname+1);
testcase( rc!=SQLITE_OK );
}
- if( rc==SQLITE_OK && !pPager->noSync
+ if( rc==SQLITE_OK
&& (pPager->eState>=PAGER_WRITER_DBMOD || pPager->eState==PAGER_OPEN)
){
- rc = sqlite3OsSync(pPager->fd, pPager->syncFlags);
+ rc = sqlite3PagerSync(pPager);
}
if( rc==SQLITE_OK ){
rc = pager_end_transaction(pPager, zMaster[0]!='\0');
@@ -37656,6 +41166,28 @@
return rc;
}
+/*
+** Update the value of the change-counter at offsets 24 and 92 in
+** the header and the sqlite version number at offset 96.
+**
+** This is an unconditional update. See also the pager_incr_changecounter()
+** routine which only updates the change-counter if the update is actually
+** needed, as determined by the pPager->changeCountDone state variable.
+*/
+static void pager_write_changecounter(PgHdr *pPg){
+ u32 change_counter;
+
+ /* Increment the value just read and write it back to byte 24. */
+ change_counter = sqlite3Get4byte((u8*)pPg->pPager->dbFileVers)+1;
+ put32bits(((char*)pPg->pData)+24, change_counter);
+
+ /* Also store the SQLite version number in bytes 96..99 and in
+ ** bytes 92..95 store the change counter for which the version number
+ ** is valid. */
+ put32bits(((char*)pPg->pData)+92, change_counter);
+ put32bits(((char*)pPg->pData)+96, SQLITE_VERSION_NUMBER);
+}
+
#ifndef SQLITE_OMIT_WAL
/*
** This function is invoked once for each page that has already been
@@ -37726,34 +41258,11 @@
return rc;
}
-
-/*
-** Update the value of the change-counter at offsets 24 and 92 in
-** the header and the sqlite version number at offset 96.
-**
-** This is an unconditional update. See also the pager_incr_changecounter()
-** routine which only updates the change-counter if the update is actually
-** needed, as determined by the pPager->changeCountDone state variable.
-*/
-static void pager_write_changecounter(PgHdr *pPg){
- u32 change_counter;
-
- /* Increment the value just read and write it back to byte 24. */
- change_counter = sqlite3Get4byte((u8*)pPg->pPager->dbFileVers)+1;
- put32bits(((char*)pPg->pData)+24, change_counter);
-
- /* Also store the SQLite version number in bytes 96..99 and in
- ** bytes 92..95 store the change counter for which the version number
- ** is valid. */
- put32bits(((char*)pPg->pData)+92, change_counter);
- put32bits(((char*)pPg->pData)+96, SQLITE_VERSION_NUMBER);
-}
-
/*
** This function is a wrapper around sqlite3WalFrames(). As well as logging
** the contents of the list of pages headed by pList (connected by pDirty),
** this function notifies any active backup processes that the pages have
-** changed.
+** changed.
**
** The list of pages passed into this routine is always sorted by page number.
** Hence, if page 1 appears anywhere on the list, it will be the first page.
@@ -37762,8 +41271,7 @@
Pager *pPager, /* Pager object */
PgHdr *pList, /* List of frames to log */
Pgno nTruncate, /* Database size after this commit */
- int isCommit, /* True if this is a commit */
- int syncFlags /* Flags to pass to OsSync() (or 0) */
+ int isCommit /* True if this is a commit */
){
int rc; /* Return code */
#if defined(SQLITE_DEBUG) || defined(SQLITE_CHECK_PAGES)
@@ -37771,6 +41279,7 @@
#endif
assert( pPager->pWal );
+ assert( pList );
#ifdef SQLITE_DEBUG
/* Verify that the page list is in accending order */
for(p=pList; p && p->pDirty; p=p->pDirty){
@@ -37778,9 +41287,22 @@
}
#endif
+ if( isCommit ){
+ /* If a WAL transaction is being committed, there is no point in writing
+ ** any pages with page numbers greater than nTruncate into the WAL file.
+ ** They will never be read by any client. So remove them from the pDirty
+ ** list here. */
+ PgHdr *p;
+ PgHdr **ppNext = &pList;
+ for(p=pList; (*ppNext = p); p=p->pDirty){
+ if( p->pgno<=nTruncate ) ppNext = &p->pDirty;
+ }
+ assert( pList );
+ }
+
if( pList->pgno==1 ) pager_write_changecounter(pList);
rc = sqlite3WalFrames(pPager->pWal,
- pPager->pageSize, pList, nTruncate, isCommit, syncFlags
+ pPager->pageSize, pList, nTruncate, isCommit, pPager->walSyncFlags
);
if( rc==SQLITE_OK && pPager->pBackup ){
PgHdr *p;
@@ -37790,6 +41312,7 @@
}
#ifdef SQLITE_CHECK_PAGES
+ pList = sqlite3PcacheDirtyList(pPager->pPCache);
for(p=pList; p; p=p->pDirty){
pager_set_pagehash(p);
}
@@ -37866,10 +41389,7 @@
return rc;
}
}
- nPage = (Pgno)(n / pPager->pageSize);
- if( nPage==0 && n>0 ){
- nPage = 1;
- }
+ nPage = (Pgno)((n+pPager->pageSize-1) / pPager->pageSize);
}
/* If the current number of pages in the file is greater than the
@@ -38059,13 +41579,13 @@
*/
if( pSavepoint ){
u32 ii; /* Loop counter */
- i64 offset = pSavepoint->iSubRec*(4+pPager->pageSize);
+ i64 offset = (i64)pSavepoint->iSubRec*(4+pPager->pageSize);
if( pagerUseWal(pPager) ){
rc = sqlite3WalSavepointUndo(pPager->pWal, pSavepoint->aWalData);
}
for(ii=pSavepoint->iSubRec; rc==SQLITE_OK && ii<pPager->nSubRec; ii++){
- assert( offset==ii*(4+pPager->pageSize) );
+ assert( offset==(i64)ii*(4+pPager->pageSize) );
rc = pager_playback_one_page(pPager, &offset, pDone, 0, 1);
}
assert( rc!=SQLITE_DONE );
@@ -38087,6 +41607,13 @@
}
/*
+** Free as much memory as possible from the pager.
+*/
+SQLITE_PRIVATE void sqlite3PagerShrink(Pager *pPager){
+ sqlite3PcacheShrink(pPager->pPCache);
+}
+
+/*
** Adjust the robustness of the database to damage due to OS crashes
** or power failures by changing the number of syncs()s when writing
** the rollback journal. There are three levels:
@@ -38152,6 +41679,10 @@
pPager->syncFlags = SQLITE_SYNC_NORMAL;
pPager->ckptSyncFlags = SQLITE_SYNC_NORMAL;
}
+ pPager->walSyncFlags = pPager->syncFlags;
+ if( pPager->fullSync ){
+ pPager->walSyncFlags |= WAL_SYNC_TRANSACTIONS;
+ }
}
#endif
@@ -38289,7 +41820,7 @@
if( rc==SQLITE_OK ){
pager_reset(pPager);
- pPager->dbSize = (Pgno)(nByte/pageSize);
+ pPager->dbSize = (Pgno)((nByte+pageSize-1)/pageSize);
pPager->pageSize = pageSize;
sqlite3PageFree(pPager->pTmpSpace);
pPager->pTmpSpace = pNew;
@@ -38531,6 +42062,7 @@
SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager){
u8 *pTmp = (u8 *)pPager->pTmpSpace;
+ assert( assert_pager_state(pPager) );
disable_simulated_io_errors();
sqlite3BeginBenignMalloc();
/* pPager->errCode = 0; */
@@ -38796,7 +42328,7 @@
assert( rc!=SQLITE_OK || isOpen(pPager->fd) );
if( rc==SQLITE_OK && pPager->dbSize>pPager->dbHintSize ){
sqlite3_int64 szFile = pPager->pageSize * (sqlite3_int64)pPager->dbSize;
- sqlite3OsFileControl(pPager->fd, SQLITE_FCNTL_SIZE_HINT, &szFile);
+ sqlite3OsFileControlHint(pPager->fd, SQLITE_FCNTL_SIZE_HINT, &szFile);
pPager->dbHintSize = pPager->dbSize;
}
@@ -38905,7 +42437,7 @@
** write the journal record into the file. */
if( rc==SQLITE_OK ){
void *pData = pPg->pData;
- i64 offset = pPager->nSubRec*(4+pPager->pageSize);
+ i64 offset = (i64)pPager->nSubRec*(4+pPager->pageSize);
char *pData2;
CODEC2(pPager, pData, pPg->pgno, 7, return SQLITE_NOMEM, pData2);
@@ -38960,7 +42492,7 @@
**
** Spilling is also prohibited when in an error state since that could
** lead to database corruption. In the current implementaton it
- ** is impossible for sqlite3PCacheFetch() to be called with createFlag==1
+ ** is impossible for sqlite3PcacheFetch() to be called with createFlag==1
** while in the error state, hence it is impossible for this routine to
** be called in the error state. Nevertheless, we include a NEVER()
** test for the error state as a safeguard against future changes.
@@ -38978,7 +42510,7 @@
rc = subjournalPage(pPg);
}
if( rc==SQLITE_OK ){
- rc = pagerWalFrames(pPager, pPg, 0, 0, 0);
+ rc = pagerWalFrames(pPager, pPg, 0, 0);
}
}else{
@@ -39091,6 +42623,8 @@
int noReadlock = (flags & PAGER_NO_READLOCK)!=0; /* True to omit read-lock */
int pcacheSize = sqlite3PcacheSize(); /* Bytes to allocate for PCache */
u32 szPageDflt = SQLITE_DEFAULT_PAGE_SIZE; /* Default page size */
+ const char *zUri = 0; /* URI args to copy */
+ int nUri = 0; /* Number of bytes of URI args at *zUri */
/* Figure out how much space is required for each journal file-handle
** (there are two of them, the main journal and the sub-journal). This
@@ -39121,6 +42655,7 @@
** leave both nPathname and zPathname set to 0.
*/
if( zFilename && zFilename[0] ){
+ const char *z;
nPathname = pVfs->mxPathname+1;
zPathname = sqlite3Malloc(nPathname*2);
if( zPathname==0 ){
@@ -39129,6 +42664,13 @@
zPathname[0] = 0; /* Make sure initialized even if FullPathname() fails */
rc = sqlite3OsFullPathname(pVfs, zFilename, nPathname, zPathname);
nPathname = sqlite3Strlen30(zPathname);
+ z = zUri = &zFilename[sqlite3Strlen30(zFilename)+1];
+ while( *z ){
+ z += sqlite3Strlen30(z)+1;
+ z += sqlite3Strlen30(z)+1;
+ }
+ nUri = (int)(&z[1] - zUri);
+ assert( nUri>=0 );
if( rc==SQLITE_OK && nPathname+8>pVfs->mxPathname ){
/* This branch is taken when the journal path required by
** the database being opened will be more than pVfs->mxPathname
@@ -39161,10 +42703,10 @@
ROUND8(pcacheSize) + /* PCache object */
ROUND8(pVfs->szOsFile) + /* The main db file */
journalFileSize * 2 + /* The two journal files */
- nPathname + 1 + /* zFilename */
- nPathname + 8 + 1 /* zJournal */
+ nPathname + 1 + nUri + /* zFilename */
+ nPathname + 8 + 2 /* zJournal */
#ifndef SQLITE_OMIT_WAL
- + nPathname + 4 + 1 /* zWal */
+ + nPathname + 4 + 2 /* zWal */
#endif
);
assert( EIGHT_BYTE_ALIGNMENT(SQLITE_INT_TO_PTR(journalFileSize)) );
@@ -39183,14 +42725,17 @@
/* Fill in the Pager.zFilename and Pager.zJournal buffers, if required. */
if( zPathname ){
assert( nPathname>0 );
- pPager->zJournal = (char*)(pPtr += nPathname + 1);
+ pPager->zJournal = (char*)(pPtr += nPathname + 1 + nUri);
memcpy(pPager->zFilename, zPathname, nPathname);
+ memcpy(&pPager->zFilename[nPathname+1], zUri, nUri);
memcpy(pPager->zJournal, zPathname, nPathname);
- memcpy(&pPager->zJournal[nPathname], "-journal", 8);
+ memcpy(&pPager->zJournal[nPathname], "-journal\000", 8+1);
+ sqlite3FileSuffix3(pPager->zFilename, pPager->zJournal);
#ifndef SQLITE_OMIT_WAL
pPager->zWal = &pPager->zJournal[nPathname+8+1];
memcpy(pPager->zWal, zPathname, nPathname);
- memcpy(&pPager->zWal[nPathname], "-wal", 4);
+ memcpy(&pPager->zWal[nPathname], "-wal\000", 4+1);
+ sqlite3FileSuffix3(pPager->zFilename, pPager->zWal);
#endif
sqlite3_free(zPathname);
}
@@ -39305,9 +42850,17 @@
pPager->readOnly = (u8)readOnly;
assert( useJournal || pPager->tempFile );
pPager->noSync = pPager->tempFile;
- pPager->fullSync = pPager->noSync ?0:1;
- pPager->syncFlags = pPager->noSync ? 0 : SQLITE_SYNC_NORMAL;
- pPager->ckptSyncFlags = pPager->syncFlags;
+ if( pPager->noSync ){
+ assert( pPager->fullSync==0 );
+ assert( pPager->syncFlags==0 );
+ assert( pPager->walSyncFlags==0 );
+ assert( pPager->ckptSyncFlags==0 );
+ }else{
+ pPager->fullSync = 1;
+ pPager->syncFlags = SQLITE_SYNC_NORMAL;
+ pPager->walSyncFlags = SQLITE_SYNC_NORMAL | WAL_SYNC_TRANSACTIONS;
+ pPager->ckptSyncFlags = SQLITE_SYNC_NORMAL;
+ }
/* pPager->pFirst = 0; */
/* pPager->pFirstSynced = 0; */
/* pPager->pLast = 0; */
@@ -39784,14 +43337,13 @@
/* In this case the pcache already contains an initialized copy of
** the page. Return without further ado. */
assert( pgno<=PAGER_MAX_PGNO && pgno!=PAGER_MJ_PGNO(pPager) );
- PAGER_INCR(pPager->nHit);
+ pPager->nHit++;
return SQLITE_OK;
}else{
/* The pager cache has created a new page. Its content needs to
** be initialized. */
- PAGER_INCR(pPager->nMiss);
pPg = *ppPage;
pPg->pPager = pPager;
@@ -39827,6 +43379,7 @@
IOTRACE(("ZERO %p %d\n", pPager, pgno));
}else{
assert( pPg->pPager==pPager );
+ pPager->nMiss++;
rc = readDbPage(pPg);
if( rc!=SQLITE_OK ){
goto pager_acquire_err;
@@ -40396,7 +43949,7 @@
** direct mode, page 1 is always held in cache and hence the PagerGet()
** above is always successful - hence the ALWAYS on rc==SQLITE_OK.
*/
- if( !DIRECT_MODE && rc==SQLITE_OK ){
+ if( !DIRECT_MODE && ALWAYS(rc==SQLITE_OK) ){
rc = sqlite3PagerWrite(pPgHdr);
}
@@ -40434,12 +43987,16 @@
** function returns SQLITE_OK. Otherwise, an IO error code is returned.
*/
SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager){
- int rc; /* Return code */
- assert( !MEMDB );
- if( pPager->noSync ){
- rc = SQLITE_OK;
- }else{
+ int rc = SQLITE_OK;
+ if( !pPager->noSync ){
+ assert( !MEMDB );
rc = sqlite3OsSync(pPager->fd, pPager->syncFlags);
+ }else if( isOpen(pPager->fd) ){
+ assert( !MEMDB );
+ rc = sqlite3OsFileControl(pPager->fd, SQLITE_FCNTL_SYNC_OMITTED, 0);
+ if( rc==SQLITE_NOTFOUND ){
+ rc = SQLITE_OK;
+ }
}
return rc;
}
@@ -40526,11 +44083,19 @@
}else{
if( pagerUseWal(pPager) ){
PgHdr *pList = sqlite3PcacheDirtyList(pPager->pPCache);
- if( pList ){
- rc = pagerWalFrames(pPager, pList, pPager->dbSize, 1,
- (pPager->fullSync ? pPager->syncFlags : 0)
- );
+ PgHdr *pPageOne = 0;
+ if( pList==0 ){
+ /* Must have at least one page for the WAL commit flag.
+ ** Ticket [2d1a5c67dfc2363e44f29d9bbd57f] 2011-05-18 */
+ rc = sqlite3PagerGet(pPager, 1, &pPageOne);
+ pList = pPageOne;
+ pList->pDirty = 0;
}
+ assert( rc==SQLITE_OK );
+ if( ALWAYS(pList) ){
+ rc = pagerWalFrames(pPager, pList, pPager->dbSize, 1);
+ }
+ sqlite3PagerUnref(pPageOne);
if( rc==SQLITE_OK ){
sqlite3PcacheCleanAll(pPager->pPCache);
}
@@ -40658,8 +44223,8 @@
}
/* Finally, sync the database file. */
- if( !pPager->noSync && !noSync ){
- rc = sqlite3OsSync(pPager->fd, pPager->syncFlags);
+ if( !noSync ){
+ rc = sqlite3PagerSync(pPager);
}
IOTRACE(("DBSYNC %p\n", pPager))
}
@@ -40771,13 +44336,24 @@
rc2 = pager_end_transaction(pPager, pPager->setMaster);
if( rc==SQLITE_OK ) rc = rc2;
}else if( !isOpen(pPager->jfd) || pPager->eState==PAGER_WRITER_LOCKED ){
+ int eState = pPager->eState;
rc = pager_end_transaction(pPager, 0);
+ if( !MEMDB && eState>PAGER_WRITER_LOCKED ){
+ /* This can happen using journal_mode=off. Move the pager to the error
+ ** state to indicate that the contents of the cache may not be trusted.
+ ** Any active readers will get SQLITE_ABORT.
+ */
+ pPager->errCode = SQLITE_ABORT;
+ pPager->eState = PAGER_ERROR;
+ return rc;
+ }
}else{
rc = pager_playback(pPager, 0);
}
assert( pPager->eState==PAGER_READER || rc!=SQLITE_OK );
- assert( rc==SQLITE_OK || rc==SQLITE_FULL || (rc&0xFF)==SQLITE_IOERR );
+ assert( rc==SQLITE_OK || rc==SQLITE_FULL
+ || rc==SQLITE_NOMEM || (rc&0xFF)==SQLITE_IOERR );
/* If an error occurs during a ROLLBACK, we can no longer trust the pager
** cache. So call pager_error() on the way out to make any error persistent.
@@ -40841,6 +44417,31 @@
#endif
/*
+** Parameter eStat must be either SQLITE_DBSTATUS_CACHE_HIT or
+** SQLITE_DBSTATUS_CACHE_MISS. Before returning, *pnVal is incremented by the
+** current cache hit or miss count, according to the value of eStat. If the
+** reset parameter is non-zero, the cache hit or miss count is zeroed before
+** returning.
+*/
+SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *pPager, int eStat, int reset, int *pnVal){
+ int *piStat;
+
+ assert( eStat==SQLITE_DBSTATUS_CACHE_HIT
+ || eStat==SQLITE_DBSTATUS_CACHE_MISS
+ );
+ if( eStat==SQLITE_DBSTATUS_CACHE_HIT ){
+ piStat = &pPager->nHit;
+ }else{
+ piStat = &pPager->nMiss;
+ }
+
+ *pnVal += *piStat;
+ if( reset ){
+ *piStat = 0;
+ }
+}
+
+/*
** Return true if this is an in-memory pager.
*/
SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager *pPager){
@@ -41378,6 +44979,7 @@
SQLITE_PRIVATE i64 sqlite3PagerJournalSizeLimit(Pager *pPager, i64 iLimit){
if( iLimit>=-1 ){
pPager->journalSizeLimit = iLimit;
+ sqlite3WalLimit(pPager->pWal, iLimit);
}
return pPager->journalSizeLimit;
}
@@ -41392,16 +44994,31 @@
return &pPager->pBackup;
}
+#ifndef SQLITE_OMIT_VACUUM
+/*
+** Unless this is an in-memory or temporary database, clear the pager cache.
+*/
+SQLITE_PRIVATE void sqlite3PagerClearCache(Pager *pPager){
+ if( !MEMDB && pPager->tempFile==0 ) pager_reset(pPager);
+}
+#endif
+
#ifndef SQLITE_OMIT_WAL
/*
-** This function is called when the user invokes "PRAGMA checkpoint".
+** This function is called when the user invokes "PRAGMA wal_checkpoint",
+** "PRAGMA wal_blocking_checkpoint" or calls the sqlite3_wal_checkpoint()
+** or wal_blocking_checkpoint() API functions.
+**
+** Parameter eMode is one of SQLITE_CHECKPOINT_PASSIVE, FULL or RESTART.
*/
-SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager){
+SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager, int eMode, int *pnLog, int *pnCkpt){
int rc = SQLITE_OK;
if( pPager->pWal ){
- u8 *zBuf = (u8 *)pPager->pTmpSpace;
- rc = sqlite3WalCheckpoint(pPager->pWal, pPager->ckptSyncFlags,
- pPager->pageSize, zBuf);
+ rc = sqlite3WalCheckpoint(pPager->pWal, eMode,
+ pPager->xBusyHandler, pPager->pBusyHandlerArg,
+ pPager->ckptSyncFlags, pPager->pageSize, (u8 *)pPager->pTmpSpace,
+ pnLog, pnCkpt
+ );
}
return rc;
}
@@ -41429,8 +45046,8 @@
assert( pPager->eLock==SHARED_LOCK || pPager->eLock==EXCLUSIVE_LOCK );
rc = pagerLockDb(pPager, EXCLUSIVE_LOCK);
if( rc!=SQLITE_OK ){
- /* If the attempt to grab the pending lock failed, release the
- ** exclusive lock that may have been obtained instead. */
+ /* If the attempt to grab the exclusive lock failed, release the
+ ** pending lock that may have been obtained instead. */
pagerUnlockDb(pPager, SHARED_LOCK);
}
@@ -41463,7 +45080,8 @@
*/
if( rc==SQLITE_OK ){
rc = sqlite3WalOpen(pPager->pVfs,
- pPager->fd, pPager->zWal, pPager->exclusiveMode, &pPager->pWal
+ pPager->fd, pPager->zWal, pPager->exclusiveMode,
+ pPager->journalSizeLimit, &pPager->pWal
);
}
@@ -41995,14 +45613,20 @@
sqlite3_file *pDbFd; /* File handle for the database file */
sqlite3_file *pWalFd; /* File handle for WAL file */
u32 iCallback; /* Value to pass to log callback (or 0) */
+ i64 mxWalSize; /* Truncate WAL to this size upon reset */
int nWiData; /* Size of array apWiData */
+ int szFirstBlock; /* Size of first block written to WAL file */
volatile u32 **apWiData; /* Pointer to wal-index content in memory */
u32 szPage; /* Database page size */
i16 readLock; /* Which read lock is being held. -1 for none */
+ u8 syncFlags; /* Flags to use to sync header writes */
u8 exclusiveMode; /* Non-zero if connection is in exclusive mode */
u8 writeLock; /* True if in a write transaction */
u8 ckptLock; /* True if holding a checkpoint lock */
- u8 readOnly; /* True if the WAL file is open read-only */
+ u8 readOnly; /* WAL_RDWR, WAL_RDONLY, or WAL_SHM_RDONLY */
+ u8 truncateOnCommit; /* True to truncate WAL file on commit */
+ u8 syncHeader; /* Fsync the WAL header if true */
+ u8 padToSectorBoundary; /* Pad transactions out to the next sector */
WalIndexHdr hdr; /* Wal-index header for current transaction */
const char *zWalName; /* Name of WAL file */
u32 nCkpt; /* Checkpoint sequence counter in the wal-header */
@@ -42019,6 +45643,13 @@
#define WAL_HEAPMEMORY_MODE 2
/*
+** Possible values for WAL.readOnly
+*/
+#define WAL_RDWR 0 /* Normal read/write connection */
+#define WAL_RDONLY 1 /* The WAL file is readonly */
+#define WAL_SHM_RDONLY 2 /* The SHM file is readonly */
+
+/*
** Each page of the wal-index mapping contains a hash-table made up of
** an array of HASHTABLE_NSLOT elements of the following type.
*/
@@ -42041,14 +45672,14 @@
*/
struct WalIterator {
int iPrior; /* Last result returned from the iterator */
- int nSegment; /* Size of the aSegment[] array */
+ int nSegment; /* Number of entries in aSegment[] */
struct WalSegment {
int iNext; /* Next slot in aIndex[] not yet returned */
ht_slot *aIndex; /* i0, i1, i2... such that aPgno[iN] ascend */
u32 *aPgno; /* Array of page numbers. */
- int nEntry; /* Max size of aPgno[] and aIndex[] arrays */
+ int nEntry; /* Nr. of entries in aPgno[] and aIndex[] */
int iZero; /* Frame number associated with aPgno[0] */
- } aSegment[1]; /* One for every 32KB page in the WAL */
+ } aSegment[1]; /* One for every 32KB page in the wal-index */
};
/*
@@ -42111,6 +45742,10 @@
rc = sqlite3OsShmMap(pWal->pDbFd, iPage, WALINDEX_PGSZ,
pWal->writeLock, (void volatile **)&pWal->apWiData[iPage]
);
+ if( rc==SQLITE_READONLY ){
+ pWal->readOnly |= WAL_SHM_RDONLY;
+ rc = SQLITE_OK;
+ }
}
}
@@ -42664,6 +46299,7 @@
int szPage; /* Page size according to the log */
u32 magic; /* Magic value read from WAL header */
u32 version; /* Magic value read from WAL header */
+ int isValid; /* True if this frame is valid */
/* Read in the WAL header. */
rc = sqlite3OsRead(pWal->pWalFd, aBuf, WAL_HDRSIZE, 0);
@@ -42722,14 +46358,14 @@
for(iOffset=WAL_HDRSIZE; (iOffset+szFrame)<=nSize; iOffset+=szFrame){
u32 pgno; /* Database page number for frame */
u32 nTruncate; /* dbsize field from frame header */
- int isValid; /* True if this frame is valid */
/* Read and decode the next log frame. */
+ iFrame++;
rc = sqlite3OsRead(pWal->pWalFd, aFrame, szFrame, iOffset);
if( rc!=SQLITE_OK ) break;
isValid = walDecodeFrame(pWal, &pgno, &nTruncate, aData, aFrame);
if( !isValid ) break;
- rc = walIndexAppend(pWal, ++iFrame, pgno);
+ rc = walIndexAppend(pWal, iFrame, pgno);
if( rc!=SQLITE_OK ) break;
/* If nTruncate is non-zero, this is a commit record. */
@@ -42817,6 +46453,7 @@
sqlite3_file *pDbFd, /* The open database file */
const char *zWalName, /* Name of the WAL file */
int bNoShm, /* True to run in heap-memory mode */
+ i64 mxWalSize, /* Truncate WAL to this size on reset */
Wal **ppWal /* OUT: Allocated Wal handle */
){
int rc; /* Return Code */
@@ -42849,14 +46486,17 @@
pRet->pWalFd = (sqlite3_file *)&pRet[1];
pRet->pDbFd = pDbFd;
pRet->readLock = -1;
+ pRet->mxWalSize = mxWalSize;
pRet->zWalName = zWalName;
+ pRet->syncHeader = 1;
+ pRet->padToSectorBoundary = 1;
pRet->exclusiveMode = (bNoShm ? WAL_HEAPMEMORY_MODE: WAL_NORMAL_MODE);
/* Open file handle on the write-ahead log file. */
flags = (SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE|SQLITE_OPEN_WAL);
rc = sqlite3OsOpen(pVfs, zWalName, pRet->pWalFd, flags, &flags);
if( rc==SQLITE_OK && flags&SQLITE_OPEN_READONLY ){
- pRet->readOnly = 1;
+ pRet->readOnly = WAL_RDONLY;
}
if( rc!=SQLITE_OK ){
@@ -42864,6 +46504,11 @@
sqlite3OsClose(pRet->pWalFd);
sqlite3_free(pRet);
}else{
+ int iDC = sqlite3OsDeviceCharacteristics(pRet->pWalFd);
+ if( iDC & SQLITE_IOCAP_SEQUENTIAL ){ pRet->syncHeader = 0; }
+ if( iDC & SQLITE_IOCAP_POWERSAFE_OVERWRITE ){
+ pRet->padToSectorBoundary = 0;
+ }
*ppWal = pRet;
WALTRACE(("WAL%d: opened\n", pRet));
}
@@ -42871,6 +46516,13 @@
}
/*
+** Change the size to which the WAL file is trucated on each reset.
+*/
+SQLITE_PRIVATE void sqlite3WalLimit(Wal *pWal, i64 iLimit){
+ if( pWal ) pWal->mxWalSize = iLimit;
+}
+
+/*
** Find the smallest page number out of all pages held in the WAL that
** has not been returned by any prior invocation of this method on the
** same WalIterator object. Write into *piFrame the frame index where
@@ -42912,9 +46564,29 @@
/*
** This function merges two sorted lists into a single sorted list.
+**
+** aLeft[] and aRight[] are arrays of indices. The sort key is
+** aContent[aLeft[]] and aContent[aRight[]]. Upon entry, the following
+** is guaranteed for all J<K:
+**
+** aContent[aLeft[J]] < aContent[aLeft[K]]
+** aContent[aRight[J]] < aContent[aRight[K]]
+**
+** This routine overwrites aRight[] with a new (probably longer) sequence
+** of indices such that the aRight[] contains every index that appears in
+** either aLeft[] or the old aRight[] and such that the second condition
+** above is still met.
+**
+** The aContent[aLeft[X]] values will be unique for all X. And the
+** aContent[aRight[X]] values will be unique too. But there might be
+** one or more combinations of X and Y such that
+**
+** aLeft[X]!=aRight[Y] && aContent[aLeft[X]] == aContent[aRight[Y]]
+**
+** When that happens, omit the aLeft[X] and use the aRight[Y] index.
*/
static void walMerge(
- u32 *aContent, /* Pages in wal */
+ const u32 *aContent, /* Pages in wal - keys for the sort */
ht_slot *aLeft, /* IN: Left hand input list */
int nLeft, /* IN: Elements in array *paLeft */
ht_slot **paRight, /* IN/OUT: Right hand input list */
@@ -42954,10 +46626,24 @@
}
/*
-** Sort the elements in list aList, removing any duplicates.
+** Sort the elements in list aList using aContent[] as the sort key.
+** Remove elements with duplicate keys, preferring to keep the
+** larger aList[] values.
+**
+** The aList[] entries are indices into aContent[]. The values in
+** aList[] are to be sorted so that for all J<K:
+**
+** aContent[aList[J]] < aContent[aList[K]]
+**
+** For any X and Y such that
+**
+** aContent[aList[X]] == aContent[aList[Y]]
+**
+** Keep the larger of the two values aList[X] and aList[Y] and discard
+** the smaller.
*/
static void walMergesort(
- u32 *aContent, /* Pages in wal */
+ const u32 *aContent, /* Pages in wal */
ht_slot *aBuffer, /* Buffer of at least *pnList items to use */
ht_slot *aList, /* IN/OUT: List to sort */
int *pnList /* IN/OUT: Number of elements in aList[] */
@@ -43022,6 +46708,7 @@
/*
** Construct a WalInterator object that can be used to loop over all
** pages in the WAL in ascending order. The caller must hold the checkpoint
+** lock.
**
** On success, make *pp point to the newly allocated WalInterator object
** return SQLITE_OK. Otherwise, return an error code. If this routine
@@ -43107,6 +46794,34 @@
}
/*
+** Attempt to obtain the exclusive WAL lock defined by parameters lockIdx and
+** n. If the attempt fails and parameter xBusy is not NULL, then it is a
+** busy-handler function. Invoke it and retry the lock until either the
+** lock is successfully obtained or the busy-handler returns 0.
+*/
+static int walBusyLock(
+ Wal *pWal, /* WAL connection */
+ int (*xBusy)(void*), /* Function to call when busy */
+ void *pBusyArg, /* Context argument for xBusyHandler */
+ int lockIdx, /* Offset of first byte to lock */
+ int n /* Number of bytes to lock */
+){
+ int rc;
+ do {
+ rc = walLockExclusive(pWal, lockIdx, n);
+ }while( xBusy && rc==SQLITE_BUSY && xBusy(pBusyArg) );
+ return rc;
+}
+
+/*
+** The cache of the wal-index header must be valid to call this function.
+** Return the page-size in bytes used by the database.
+*/
+static int walPagesize(Wal *pWal){
+ return (pWal->hdr.szPage&0xfe00) + ((pWal->hdr.szPage&0x0001)<<16);
+}
+
+/*
** Copy as much content as we can from the WAL back into the database file
** in response to an sqlite3_wal_checkpoint() request or the equivalent.
**
@@ -43139,8 +46854,10 @@
*/
static int walCheckpoint(
Wal *pWal, /* Wal connection */
+ int eMode, /* One of PASSIVE, FULL or RESTART */
+ int (*xBusyCall)(void*), /* Function to call when busy */
+ void *pBusyArg, /* Context argument for xBusyHandler */
int sync_flags, /* Flags for OsSync() (or 0) */
- int nBuf, /* Size of zBuf in bytes */
u8 *zBuf /* Temporary buffer to use */
){
int rc; /* Return code */
@@ -43152,8 +46869,9 @@
u32 mxPage; /* Max database page to write */
int i; /* Loop counter */
volatile WalCkptInfo *pInfo; /* The checkpoint status information */
+ int (*xBusy)(void*) = 0; /* Function to call when waiting for locks */
- szPage = (pWal->hdr.szPage&0xfe00) + ((pWal->hdr.szPage&0x0001)<<16);
+ szPage = walPagesize(pWal);
testcase( szPage<=32768 );
testcase( szPage>=65536 );
pInfo = walCkptInfo(pWal);
@@ -43166,11 +46884,7 @@
}
assert( pIter );
- /*** TODO: Move this test out to the caller. Make it an assert() here ***/
- if( szPage!=nBuf ){
- rc = SQLITE_CORRUPT_BKPT;
- goto walcheckpoint_out;
- }
+ if( eMode!=SQLITE_CHECKPOINT_PASSIVE ) xBusy = xBusyCall;
/* Compute in mxSafeFrame the index of the last frame of the WAL that is
** safe to write into the database. Frames beyond mxSafeFrame might
@@ -43181,14 +46895,15 @@
mxPage = pWal->hdr.nPage;
for(i=1; i<WAL_NREADER; i++){
u32 y = pInfo->aReadMark[i];
- if( mxSafeFrame>=y ){
+ if( mxSafeFrame>y ){
assert( y<=pWal->hdr.mxFrame );
- rc = walLockExclusive(pWal, WAL_READ_LOCK(i), 1);
+ rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(i), 1);
if( rc==SQLITE_OK ){
pInfo->aReadMark[i] = READMARK_NOT_USED;
walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
}else if( rc==SQLITE_BUSY ){
mxSafeFrame = y;
+ xBusy = 0;
}else{
goto walcheckpoint_out;
}
@@ -43196,7 +46911,7 @@
}
if( pInfo->nBackfill<mxSafeFrame
- && (rc = walLockExclusive(pWal, WAL_READ_LOCK(0), 1))==SQLITE_OK
+ && (rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(0), 1))==SQLITE_OK
){
i64 nSize; /* Current size of database file */
u32 nBackfill = pInfo->nBackfill;
@@ -43213,7 +46928,7 @@
i64 nReq = ((i64)mxPage * szPage);
rc = sqlite3OsFileSize(pWal->pDbFd, &nSize);
if( rc==SQLITE_OK && nSize<nReq ){
- sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_SIZE_HINT, &nReq);
+ sqlite3OsFileControlHint(pWal->pDbFd, SQLITE_FCNTL_SIZE_HINT, &nReq);
}
}
@@ -43249,19 +46964,56 @@
/* Release the reader lock held while backfilling */
walUnlockExclusive(pWal, WAL_READ_LOCK(0), 1);
- }else if( rc==SQLITE_BUSY ){
+ }
+
+ if( rc==SQLITE_BUSY ){
/* Reset the return code so as not to report a checkpoint failure
- ** just because active readers prevent any backfill.
- */
+ ** just because there are active readers. */
rc = SQLITE_OK;
}
+ /* If this is an SQLITE_CHECKPOINT_RESTART operation, and the entire wal
+ ** file has been copied into the database file, then block until all
+ ** readers have finished using the wal file. This ensures that the next
+ ** process to write to the database restarts the wal file.
+ */
+ if( rc==SQLITE_OK && eMode!=SQLITE_CHECKPOINT_PASSIVE ){
+ assert( pWal->writeLock );
+ if( pInfo->nBackfill<pWal->hdr.mxFrame ){
+ rc = SQLITE_BUSY;
+ }else if( eMode==SQLITE_CHECKPOINT_RESTART ){
+ assert( mxSafeFrame==pWal->hdr.mxFrame );
+ rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(1), WAL_NREADER-1);
+ if( rc==SQLITE_OK ){
+ walUnlockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1);
+ }
+ }
+ }
+
walcheckpoint_out:
walIteratorFree(pIter);
return rc;
}
/*
+** If the WAL file is currently larger than nMax bytes in size, truncate
+** it to exactly nMax bytes. If an error occurs while doing so, ignore it.
+*/
+static void walLimitSize(Wal *pWal, i64 nMax){
+ i64 sz;
+ int rx;
+ sqlite3BeginBenignMalloc();
+ rx = sqlite3OsFileSize(pWal->pWalFd, &sz);
+ if( rx==SQLITE_OK && (sz > nMax ) ){
+ rx = sqlite3OsTruncate(pWal->pWalFd, nMax);
+ }
+ sqlite3EndBenignMalloc();
+ if( rx ){
+ sqlite3_log(rx, "cannot limit WAL size: %s", pWal->zWalName);
+ }
+}
+
+/*
** Close a connection to a log file.
*/
SQLITE_PRIVATE int sqlite3WalClose(
@@ -43287,16 +47039,37 @@
if( pWal->exclusiveMode==WAL_NORMAL_MODE ){
pWal->exclusiveMode = WAL_EXCLUSIVE_MODE;
}
- rc = sqlite3WalCheckpoint(pWal, sync_flags, nBuf, zBuf);
+ rc = sqlite3WalCheckpoint(
+ pWal, SQLITE_CHECKPOINT_PASSIVE, 0, 0, sync_flags, nBuf, zBuf, 0, 0
+ );
if( rc==SQLITE_OK ){
- isDelete = 1;
+ int bPersist = -1;
+ sqlite3OsFileControlHint(
+ pWal->pDbFd, SQLITE_FCNTL_PERSIST_WAL, &bPersist
+ );
+ if( bPersist!=1 ){
+ /* Try to delete the WAL file if the checkpoint completed and
+ ** fsyned (rc==SQLITE_OK) and if we are not in persistent-wal
+ ** mode (!bPersist) */
+ isDelete = 1;
+ }else if( pWal->mxWalSize>=0 ){
+ /* Try to truncate the WAL file to zero bytes if the checkpoint
+ ** completed and fsynced (rc==SQLITE_OK) and we are in persistent
+ ** WAL mode (bPersist) and if the PRAGMA journal_size_limit is a
+ ** non-negative value (pWal->mxWalSize>=0). Note that we truncate
+ ** to zero bytes as truncating to the journal_size_limit might
+ ** leave a corrupt WAL file on disk. */
+ walLimitSize(pWal, 0);
+ }
}
}
walIndexClose(pWal, isDelete);
sqlite3OsClose(pWal->pWalFd);
if( isDelete ){
+ sqlite3BeginBenignMalloc();
sqlite3OsDelete(pWal->pVfs, pWal->zWalName, 0);
+ sqlite3EndBenignMalloc();
}
WALTRACE(("WAL%p: closed\n", pWal));
sqlite3_free((void *)pWal->apWiData);
@@ -43406,21 +47179,28 @@
** with a writer. So get a WRITE lock and try again.
*/
assert( badHdr==0 || pWal->writeLock==0 );
- if( badHdr && SQLITE_OK==(rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1)) ){
- pWal->writeLock = 1;
- if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){
- badHdr = walIndexTryHdr(pWal, pChanged);
- if( badHdr ){
- /* If the wal-index header is still malformed even while holding
- ** a WRITE lock, it can only mean that the header is corrupted and
- ** needs to be reconstructed. So run recovery to do exactly that.
- */
- rc = walIndexRecover(pWal);
- *pChanged = 1;
+ if( badHdr ){
+ if( pWal->readOnly & WAL_SHM_RDONLY ){
+ if( SQLITE_OK==(rc = walLockShared(pWal, WAL_WRITE_LOCK)) ){
+ walUnlockShared(pWal, WAL_WRITE_LOCK);
+ rc = SQLITE_READONLY_RECOVERY;
}
+ }else if( SQLITE_OK==(rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1)) ){
+ pWal->writeLock = 1;
+ if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){
+ badHdr = walIndexTryHdr(pWal, pChanged);
+ if( badHdr ){
+ /* If the wal-index header is still malformed even while holding
+ ** a WRITE lock, it can only mean that the header is corrupted and
+ ** needs to be reconstructed. So run recovery to do exactly that.
+ */
+ rc = walIndexRecover(pWal);
+ *pChanged = 1;
+ }
+ }
+ pWal->writeLock = 0;
+ walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
}
- pWal->writeLock = 0;
- walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
}
/* If the header is read successfully, check the version number to make
@@ -43607,7 +47387,9 @@
}
/* There was once an "if" here. The extra "{" is to preserve indentation. */
{
- if( mxReadMark < pWal->hdr.mxFrame || mxI==0 ){
+ if( (pWal->readOnly & WAL_SHM_RDONLY)==0
+ && (mxReadMark<pWal->hdr.mxFrame || mxI==0)
+ ){
for(i=1; i<WAL_NREADER; i++){
rc = walLockExclusive(pWal, WAL_READ_LOCK(i), 1);
if( rc==SQLITE_OK ){
@@ -43621,8 +47403,8 @@
}
}
if( mxI==0 ){
- assert( rc==SQLITE_BUSY );
- return WAL_RETRY;
+ assert( rc==SQLITE_BUSY || (pWal->readOnly & WAL_SHM_RDONLY)!=0 );
+ return rc==SQLITE_BUSY ? WAL_RETRY : SQLITE_READONLY_CANTLOCK;
}
rc = walLockShared(pWal, WAL_READ_LOCK(mxI));
@@ -43777,7 +47559,7 @@
for(iKey=walHash(pgno); aHash[iKey]; iKey=walNextHash(iKey)){
u32 iFrame = aHash[iKey] + iZero;
if( iFrame<=iLast && aPgno[aHash[iKey]]==pgno ){
- assert( iFrame>iRead );
+ /* assert( iFrame>iRead ); -- not true if there is corruption */
iRead = iFrame;
}
if( (nCollide--)==0 ){
@@ -43810,7 +47592,7 @@
int sz;
i64 iOffset;
sz = pWal->hdr.szPage;
- sz = (pWal->hdr.szPage&0xfe00) + ((pWal->hdr.szPage&0x0001)<<16);
+ sz = (sz&0xfe00) + ((sz&0x0001)<<16);
testcase( sz<=32768 );
testcase( sz>=65536 );
iOffset = walFrameOffset(iRead, sz) + WAL_FRAME_HDRSIZE;
@@ -43889,6 +47671,7 @@
if( pWal->writeLock ){
walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
pWal->writeLock = 0;
+ pWal->truncateOnCommit = 0;
}
return SQLITE_OK;
}
@@ -43985,6 +47768,7 @@
return rc;
}
+
/*
** This function is called just before writing a set of frames to the log
** file (see sqlite3WalFrames()). It checks to see if, instead of appending
@@ -44021,6 +47805,7 @@
*/
int i; /* Loop counter */
u32 *aSalt = pWal->hdr.aSalt; /* Big-endian salt values */
+
pWal->nCkpt++;
pWal->hdr.mxFrame = 0;
sqlite3Put4byte((u8*)&aSalt[0], 1 + sqlite3Get4byte((u8*)&aSalt[0]));
@@ -44049,6 +47834,74 @@
return rc;
}
+/*
+** Information about the current state of the WAL file and where
+** the next fsync should occur - passed from sqlite3WalFrames() into
+** walWriteToLog().
+*/
+typedef struct WalWriter {
+ Wal *pWal; /* The complete WAL information */
+ sqlite3_file *pFd; /* The WAL file to which we write */
+ sqlite3_int64 iSyncPoint; /* Fsync at this offset */
+ int syncFlags; /* Flags for the fsync */
+ int szPage; /* Size of one page */
+} WalWriter;
+
+/*
+** Write iAmt bytes of content into the WAL file beginning at iOffset.
+** Do a sync when crossing the p->iSyncPoint boundary.
+**
+** In other words, if iSyncPoint is in between iOffset and iOffset+iAmt,
+** first write the part before iSyncPoint, then sync, then write the
+** rest.
+*/
+static int walWriteToLog(
+ WalWriter *p, /* WAL to write to */
+ void *pContent, /* Content to be written */
+ int iAmt, /* Number of bytes to write */
+ sqlite3_int64 iOffset /* Start writing at this offset */
+){
+ int rc;
+ if( iOffset<p->iSyncPoint && iOffset+iAmt>=p->iSyncPoint ){
+ int iFirstAmt = (int)(p->iSyncPoint - iOffset);
+ rc = sqlite3OsWrite(p->pFd, pContent, iFirstAmt, iOffset);
+ if( rc ) return rc;
+ iOffset += iFirstAmt;
+ iAmt -= iFirstAmt;
+ pContent = (void*)(iFirstAmt + (char*)pContent);
+ assert( p->syncFlags & (SQLITE_SYNC_NORMAL|SQLITE_SYNC_FULL) );
+ rc = sqlite3OsSync(p->pFd, p->syncFlags);
+ if( iAmt==0 || rc ) return rc;
+ }
+ rc = sqlite3OsWrite(p->pFd, pContent, iAmt, iOffset);
+ return rc;
+}
+
+/*
+** Write out a single frame of the WAL
+*/
+static int walWriteOneFrame(
+ WalWriter *p, /* Where to write the frame */
+ PgHdr *pPage, /* The page of the frame to be written */
+ int nTruncate, /* The commit flag. Usually 0. >0 for commit */
+ sqlite3_int64 iOffset /* Byte offset at which to write */
+){
+ int rc; /* Result code from subfunctions */
+ void *pData; /* Data actually written */
+ u8 aFrame[WAL_FRAME_HDRSIZE]; /* Buffer to assemble frame-header in */
+#if defined(SQLITE_HAS_CODEC)
+ if( (pData = sqlite3PagerCodec(pPage))==0 ) return SQLITE_NOMEM;
+#else
+ pData = pPage->pData;
+#endif
+ walEncodeFrame(p->pWal, pPage->pgno, nTruncate, pData, aFrame);
+ rc = walWriteToLog(p, aFrame, sizeof(aFrame), iOffset);
+ if( rc ) return rc;
+ /* Write the page data */
+ rc = walWriteToLog(p, pData, p->szPage, iOffset+sizeof(aFrame));
+ return rc;
+}
+
/*
** Write a set of frames to the log. The caller must hold the write-lock
** on the log file (obtained using sqlite3WalBeginWriteTransaction()).
@@ -44063,14 +47916,20 @@
){
int rc; /* Used to catch return codes */
u32 iFrame; /* Next frame address */
- u8 aFrame[WAL_FRAME_HDRSIZE]; /* Buffer to assemble frame-header in */
PgHdr *p; /* Iterator to run through pList with. */
PgHdr *pLast = 0; /* Last frame in list */
- int nLast = 0; /* Number of extra copies of last page */
+ int nExtra = 0; /* Number of extra copies of last page */
+ int szFrame; /* The size of a single frame */
+ i64 iOffset; /* Next byte to write in WAL file */
+ WalWriter w; /* The writer */
assert( pList );
assert( pWal->writeLock );
+ /* If this frame set completes a transaction, then nTruncate>0. If
+ ** nTruncate==0 then this frame set does not complete the transaction. */
+ assert( (isCommit!=0)==(nTruncate!=0) );
+
#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG)
{ int cnt; for(cnt=0, p=pList; p; p=p->pDirty, cnt++){}
WALTRACE(("WAL%p: frame write begin. %d frames. mxFrame=%d. %s\n",
@@ -44098,7 +47957,7 @@
sqlite3Put4byte(&aWalHdr[4], WAL_MAX_VERSION);
sqlite3Put4byte(&aWalHdr[8], szPage);
sqlite3Put4byte(&aWalHdr[12], pWal->nCkpt);
- sqlite3_randomness(8, pWal->hdr.aSalt);
+ if( pWal->nCkpt==0 ) sqlite3_randomness(8, pWal->hdr.aSalt);
memcpy(&aWalHdr[16], pWal->hdr.aSalt, 8);
walChecksumBytes(1, aWalHdr, WAL_HDRSIZE-2*4, 0, aCksum);
sqlite3Put4byte(&aWalHdr[24], aCksum[0]);
@@ -44108,77 +47967,89 @@
pWal->hdr.bigEndCksum = SQLITE_BIGENDIAN;
pWal->hdr.aFrameCksum[0] = aCksum[0];
pWal->hdr.aFrameCksum[1] = aCksum[1];
+ pWal->truncateOnCommit = 1;
rc = sqlite3OsWrite(pWal->pWalFd, aWalHdr, sizeof(aWalHdr), 0);
WALTRACE(("WAL%p: wal-header write %s\n", pWal, rc ? "failed" : "ok"));
if( rc!=SQLITE_OK ){
return rc;
}
+
+ /* Sync the header (unless SQLITE_IOCAP_SEQUENTIAL is true or unless
+ ** all syncing is turned off by PRAGMA synchronous=OFF). Otherwise
+ ** an out-of-order write following a WAL restart could result in
+ ** database corruption. See the ticket:
+ **
+ ** http://localhost:591/sqlite/info/ff5be73dee
+ */
+ if( pWal->syncHeader && sync_flags ){
+ rc = sqlite3OsSync(pWal->pWalFd, sync_flags & SQLITE_SYNC_MASK);
+ if( rc ) return rc;
+ }
}
assert( (int)pWal->szPage==szPage );
- /* Write the log file. */
- for(p=pList; p; p=p->pDirty){
- u32 nDbsize; /* Db-size field for frame header */
- i64 iOffset; /* Write offset in log file */
- void *pData;
-
- iOffset = walFrameOffset(++iFrame, szPage);
- /* testcase( IS_BIG_INT(iOffset) ); // requires a 4GiB WAL */
-
- /* Populate and write the frame header */
- nDbsize = (isCommit && p->pDirty==0) ? nTruncate : 0;
-#if defined(SQLITE_HAS_CODEC)
- if( (pData = sqlite3PagerCodec(p))==0 ) return SQLITE_NOMEM;
-#else
- pData = p->pData;
-#endif
- walEncodeFrame(pWal, p->pgno, nDbsize, pData, aFrame);
- rc = sqlite3OsWrite(pWal->pWalFd, aFrame, sizeof(aFrame), iOffset);
- if( rc!=SQLITE_OK ){
- return rc;
- }
+ /* Setup information needed to write frames into the WAL */
+ w.pWal = pWal;
+ w.pFd = pWal->pWalFd;
+ w.iSyncPoint = 0;
+ w.syncFlags = sync_flags;
+ w.szPage = szPage;
+ iOffset = walFrameOffset(iFrame+1, szPage);
+ szFrame = szPage + WAL_FRAME_HDRSIZE;
- /* Write the page data */
- rc = sqlite3OsWrite(pWal->pWalFd, pData, szPage, iOffset+sizeof(aFrame));
- if( rc!=SQLITE_OK ){
- return rc;
- }
+ /* Write all frames into the log file exactly once */
+ for(p=pList; p; p=p->pDirty){
+ int nDbSize; /* 0 normally. Positive == commit flag */
+ iFrame++;
+ assert( iOffset==walFrameOffset(iFrame, szPage) );
+ nDbSize = (isCommit && p->pDirty==0) ? nTruncate : 0;
+ rc = walWriteOneFrame(&w, p, nDbSize, iOffset);
+ if( rc ) return rc;
pLast = p;
+ iOffset += szFrame;
}
- /* Sync the log file if the 'isSync' flag was specified. */
- if( sync_flags ){
- i64 iSegment = sqlite3OsSectorSize(pWal->pWalFd);
- i64 iOffset = walFrameOffset(iFrame+1, szPage);
-
- assert( isCommit );
- assert( iSegment>0 );
-
- iSegment = (((iOffset+iSegment-1)/iSegment) * iSegment);
- while( iOffset<iSegment ){
- void *pData;
-#if defined(SQLITE_HAS_CODEC)
- if( (pData = sqlite3PagerCodec(pLast))==0 ) return SQLITE_NOMEM;
-#else
- pData = pLast->pData;
-#endif
- walEncodeFrame(pWal, pLast->pgno, nTruncate, pData, aFrame);
- /* testcase( IS_BIG_INT(iOffset) ); // requires a 4GiB WAL */
- rc = sqlite3OsWrite(pWal->pWalFd, aFrame, sizeof(aFrame), iOffset);
- if( rc!=SQLITE_OK ){
- return rc;
+ /* If this is the end of a transaction, then we might need to pad
+ ** the transaction and/or sync the WAL file.
+ **
+ ** Padding and syncing only occur if this set of frames complete a
+ ** transaction and if PRAGMA synchronous=FULL. If synchronous==NORMAL
+ ** or synchonous==OFF, then no padding or syncing are needed.
+ **
+ ** If SQLITE_IOCAP_POWERSAFE_OVERWRITE is defined, then padding is not
+ ** needed and only the sync is done. If padding is needed, then the
+ ** final frame is repeated (with its commit mark) until the next sector
+ ** boundary is crossed. Only the part of the WAL prior to the last
+ ** sector boundary is synced; the part of the last frame that extends
+ ** past the sector boundary is written after the sync.
+ */
+ if( isCommit && (sync_flags & WAL_SYNC_TRANSACTIONS)!=0 ){
+ if( pWal->padToSectorBoundary ){
+ int sectorSize = sqlite3OsSectorSize(pWal->pWalFd);
+ w.iSyncPoint = ((iOffset+sectorSize-1)/sectorSize)*sectorSize;
+ while( iOffset<w.iSyncPoint ){
+ rc = walWriteOneFrame(&w, pLast, nTruncate, iOffset);
+ if( rc ) return rc;
+ iOffset += szFrame;
+ nExtra++;
}
- iOffset += WAL_FRAME_HDRSIZE;
- rc = sqlite3OsWrite(pWal->pWalFd, pData, szPage, iOffset);
- if( rc!=SQLITE_OK ){
- return rc;
- }
- nLast++;
- iOffset += szPage;
+ }else{
+ rc = sqlite3OsSync(w.pFd, sync_flags & SQLITE_SYNC_MASK);
}
+ }
- rc = sqlite3OsSync(pWal->pWalFd, sync_flags);
+ /* If this frame set completes the first transaction in the WAL and
+ ** if PRAGMA journal_size_limit is set, then truncate the WAL to the
+ ** journal size limit, if possible.
+ */
+ if( isCommit && pWal->truncateOnCommit && pWal->mxWalSize>=0 ){
+ i64 sz = pWal->mxWalSize;
+ if( walFrameOffset(iFrame+nExtra+1, szPage)>pWal->mxWalSize ){
+ sz = walFrameOffset(iFrame+nExtra+1, szPage);
+ }
+ walLimitSize(pWal, sz);
+ pWal->truncateOnCommit = 0;
}
/* Append data to the wal-index. It is not necessary to lock the
@@ -44191,9 +48062,9 @@
iFrame++;
rc = walIndexAppend(pWal, iFrame, p->pgno);
}
- while( nLast>0 && rc==SQLITE_OK ){
+ while( rc==SQLITE_OK && nExtra>0 ){
iFrame++;
- nLast--;
+ nExtra--;
rc = walIndexAppend(pWal, iFrame, pLast->pgno);
}
@@ -44224,18 +48095,29 @@
**
** Obtain a CHECKPOINT lock and then backfill as much information as
** we can from WAL into the database.
+**
+** If parameter xBusy is not NULL, it is a pointer to a busy-handler
+** callback. In this case this function runs a blocking checkpoint.
*/
SQLITE_PRIVATE int sqlite3WalCheckpoint(
Wal *pWal, /* Wal connection */
+ int eMode, /* PASSIVE, FULL or RESTART */
+ int (*xBusy)(void*), /* Function to call when busy */
+ void *pBusyArg, /* Context argument for xBusyHandler */
int sync_flags, /* Flags to sync db file with (or 0) */
int nBuf, /* Size of temporary buffer */
- u8 *zBuf /* Temporary buffer to use */
+ u8 *zBuf, /* Temporary buffer to use */
+ int *pnLog, /* OUT: Number of frames in WAL */
+ int *pnCkpt /* OUT: Number of backfilled frames in WAL */
){
int rc; /* Return code */
int isChanged = 0; /* True if a new wal-index header is loaded */
+ int eMode2 = eMode; /* Mode to pass to walCheckpoint() */
assert( pWal->ckptLock==0 );
+ assert( pWal->writeLock==0 );
+ if( pWal->readOnly ) return SQLITE_READONLY;
WALTRACE(("WAL%p: checkpoint begins\n", pWal));
rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1);
if( rc ){
@@ -44246,11 +48128,45 @@
}
pWal->ckptLock = 1;
- /* Copy data from the log to the database file. */
- rc = walIndexReadHdr(pWal, &isChanged);
- if( rc==SQLITE_OK ){
- rc = walCheckpoint(pWal, sync_flags, nBuf, zBuf);
+ /* If this is a blocking-checkpoint, then obtain the write-lock as well
+ ** to prevent any writers from running while the checkpoint is underway.
+ ** This has to be done before the call to walIndexReadHdr() below.
+ **
+ ** If the writer lock cannot be obtained, then a passive checkpoint is
+ ** run instead. Since the checkpointer is not holding the writer lock,
+ ** there is no point in blocking waiting for any readers. Assuming no
+ ** other error occurs, this function will return SQLITE_BUSY to the caller.
+ */
+ if( eMode!=SQLITE_CHECKPOINT_PASSIVE ){
+ rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_WRITE_LOCK, 1);
+ if( rc==SQLITE_OK ){
+ pWal->writeLock = 1;
+ }else if( rc==SQLITE_BUSY ){
+ eMode2 = SQLITE_CHECKPOINT_PASSIVE;
+ rc = SQLITE_OK;
+ }
}
+
+ /* Read the wal-index header. */
+ if( rc==SQLITE_OK ){
+ rc = walIndexReadHdr(pWal, &isChanged);
+ }
+
+ /* Copy data from the log to the database file. */
+ if( rc==SQLITE_OK ){
+ if( pWal->hdr.mxFrame && walPagesize(pWal)!=nBuf ){
+ rc = SQLITE_CORRUPT_BKPT;
+ }else{
+ rc = walCheckpoint(pWal, eMode2, xBusy, pBusyArg, sync_flags, zBuf);
+ }
+
+ /* If no error occurred, set the output variables. */
+ if( rc==SQLITE_OK || rc==SQLITE_BUSY ){
+ if( pnLog ) *pnLog = (int)pWal->hdr.mxFrame;
+ if( pnCkpt ) *pnCkpt = (int)(walCkptInfo(pWal)->nBackfill);
+ }
+ }
+
if( isChanged ){
/* If a new wal-index header was loaded before the checkpoint was
** performed, then the pager-cache associated with pWal is now
@@ -44262,10 +48178,11 @@
}
/* Release the locks. */
+ sqlite3WalEndWriteTransaction(pWal);
walUnlockExclusive(pWal, WAL_CKPT_LOCK, 1);
pWal->ckptLock = 0;
WALTRACE(("WAL%p: checkpoint %s\n", pWal, rc ? "failed" : "ok"));
- return rc;
+ return (rc==SQLITE_OK && eMode!=eMode2 ? SQLITE_BUSY : rc);
}
/* Return the value to pass to a sqlite3_wal_hook callback, the
@@ -44594,7 +48511,7 @@
/* The following value is the maximum cell size assuming a maximum page
** size give above.
*/
-#define MX_CELL_SIZE(pBt) (pBt->pageSize-8)
+#define MX_CELL_SIZE(pBt) ((int)(pBt->pageSize-8))
/* The maximum number of cells on a single page of the database. This
** assumes a minimum cell size of 6 bytes (4 bytes for the cell itself
@@ -44653,6 +48570,7 @@
u8 hasData; /* True if this page stores data */
u8 hdrOffset; /* 100 for page 1. 0 otherwise */
u8 childPtrSize; /* 0 if leaf==1. 4 if leaf==0 */
+ u8 max1bytePayload; /* min(maxLocal,127) */
u16 maxLocal; /* Copy of BtShared.maxLocal or BtShared.maxLeaf */
u16 minLocal; /* Copy of BtShared.minLocal or BtShared.minLeaf */
u16 cellOffset; /* Index in aData of first cell pointer */
@@ -44665,6 +48583,8 @@
} aOvfl[5];
BtShared *pBt; /* Pointer to BtShared that this page is part of */
u8 *aData; /* Pointer to disk image of the page data */
+ u8 *aDataEnd; /* One byte past the end of usable data */
+ u8 *aCellIdx; /* The cell index area */
DbPage *pDbPage; /* Pager page handle */
Pgno pgno; /* Page number for this page */
};
@@ -44712,7 +48632,7 @@
** All fields in this structure are accessed under sqlite3.mutex.
** The pBt pointer itself may not be changed while there exists cursors
** in the referenced BtShared that point back to this Btree since those
-** cursors have to do go through this Btree to find their BtShared and
+** cursors have to go through this Btree to find their BtShared and
** they often do so without holding sqlite3.mutex.
*/
struct Btree {
@@ -44744,7 +48664,7 @@
/*
** An instance of this object represents a single database file.
**
-** A single database file can be in use as the same time by two
+** A single database file can be in use at the same time by two
** or more database connections. When two or more connections are
** sharing the same database file, each connection has it own
** private Btree object for the file and each of those Btrees points
@@ -44781,49 +48701,55 @@
sqlite3 *db; /* Database connection currently using this Btree */
BtCursor *pCursor; /* A list of all open cursors */
MemPage *pPage1; /* First page of the database */
- u8 readOnly; /* True if the underlying file is readonly */
- u8 pageSizeFixed; /* True if the page size can no longer be changed */
- u8 secureDelete; /* True if secure_delete is enabled */
- u8 initiallyEmpty; /* Database is empty at start of transaction */
u8 openFlags; /* Flags to sqlite3BtreeOpen() */
#ifndef SQLITE_OMIT_AUTOVACUUM
u8 autoVacuum; /* True if auto-vacuum is enabled */
u8 incrVacuum; /* True if incr-vacuum is enabled */
#endif
+ u8 inTransaction; /* Transaction state */
+ u8 max1bytePayload; /* Maximum first byte of cell for a 1-byte payload */
+ u16 btsFlags; /* Boolean parameters. See BTS_* macros below */
u16 maxLocal; /* Maximum local payload in non-LEAFDATA tables */
u16 minLocal; /* Minimum local payload in non-LEAFDATA tables */
u16 maxLeaf; /* Maximum local payload in a LEAFDATA table */
u16 minLeaf; /* Minimum local payload in a LEAFDATA table */
- u8 inTransaction; /* Transaction state */
- u8 doNotUseWAL; /* If true, do not open write-ahead-log file */
u32 pageSize; /* Total number of bytes on a page */
u32 usableSize; /* Number of usable bytes on each page */
int nTransaction; /* Number of open transactions (read + write) */
u32 nPage; /* Number of pages in the database */
void *pSchema; /* Pointer to space allocated by sqlite3BtreeSchema() */
void (*xFreeSchema)(void*); /* Destructor for BtShared.pSchema */
- sqlite3_mutex *mutex; /* Non-recursive mutex required to access this struct */
+ sqlite3_mutex *mutex; /* Non-recursive mutex required to access this object */
Bitvec *pHasContent; /* Set of pages moved to free-list this transaction */
#ifndef SQLITE_OMIT_SHARED_CACHE
int nRef; /* Number of references to this structure */
BtShared *pNext; /* Next on a list of sharable BtShared structs */
BtLock *pLock; /* List of locks held on this shared-btree struct */
Btree *pWriter; /* Btree with currently open write transaction */
- u8 isExclusive; /* True if pWriter has an EXCLUSIVE lock on the db */
- u8 isPending; /* If waiting for read-locks to clear */
#endif
u8 *pTmpSpace; /* BtShared.pageSize bytes of space for tmp use */
};
/*
+** Allowed values for BtShared.btsFlags
+*/
+#define BTS_READ_ONLY 0x0001 /* Underlying file is readonly */
+#define BTS_PAGESIZE_FIXED 0x0002 /* Page size can no longer be changed */
+#define BTS_SECURE_DELETE 0x0004 /* PRAGMA secure_delete is enabled */
+#define BTS_INITIALLY_EMPTY 0x0008 /* Database was empty at trans start */
+#define BTS_NO_WAL 0x0010 /* Do not open write-ahead-log files */
+#define BTS_EXCLUSIVE 0x0020 /* pWriter has an exclusive lock */
+#define BTS_PENDING 0x0040 /* Waiting for read-locks to clear */
+
+/*
** An instance of the following structure is used to hold information
** about a cell. The parseCellPtr() function fills in this structure
** based on information extract from the raw disk page.
*/
typedef struct CellInfo CellInfo;
struct CellInfo {
- u8 *pCell; /* Pointer to the start of cell content */
i64 nKey; /* The key for INTKEY tables, or number of bytes in key */
+ u8 *pCell; /* Pointer to the start of cell content */
u32 nData; /* Number of bytes of data */
u32 nPayload; /* Total amount of payload */
u16 nHeader; /* Size of the cell content header in bytes */
@@ -44850,7 +48776,7 @@
** The entry is identified by its MemPage and the index in
** MemPage.aCell[] of the entry.
**
-** A single database file can shared by two more database connections,
+** A single database file can be shared by two more database connections,
** but cursors cannot be shared. Each cursor is associated with a
** particular database connection identified BtCursor.pBtree.db.
**
@@ -44865,20 +48791,20 @@
Pgno pgnoRoot; /* The root page of this tree */
sqlite3_int64 cachedRowid; /* Next rowid cache. 0 means not valid */
CellInfo info; /* A parse of the cell we are pointing at */
+ i64 nKey; /* Size of pKey, or last integer key */
+ void *pKey; /* Saved key that was cursor's last known position */
+ int skipNext; /* Prev() is noop if negative. Next() is noop if positive */
u8 wrFlag; /* True if writable */
u8 atLast; /* Cursor pointing to the last entry */
u8 validNKey; /* True if info.nKey is valid */
u8 eState; /* One of the CURSOR_XXX constants (see below) */
- void *pKey; /* Saved key that was cursor's last known position */
- i64 nKey; /* Size of pKey, or last integer key */
- int skipNext; /* Prev() is noop if negative. Next() is noop if positive */
#ifndef SQLITE_OMIT_INCRBLOB
- u8 isIncrblobHandle; /* True if this cursor is an incr. io handle */
Pgno *aOverflow; /* Cache of overflow page locations */
+ u8 isIncrblobHandle; /* True if this cursor is an incr. io handle */
#endif
i16 iPage; /* Index of current page in apPage */
- MemPage *apPage[BTCURSOR_MAX_DEPTH]; /* Pages from root to current page */
u16 aiIdx[BTCURSOR_MAX_DEPTH]; /* Current index in apPage[i] */
+ MemPage *apPage[BTCURSOR_MAX_DEPTH]; /* Pages from root to current page */
};
/*
@@ -45011,7 +48937,7 @@
};
/*
-** Read or write a two- and four-byte big-endian integer values.
+** Routines to read or write a two- and four-byte big-endian integer values.
*/
#define get2byte(x) ((x)[0]<<8 | (x)[1])
#define put2byte(p,v) ((p)[0] = (u8)((v)>>8), (p)[1] = (u8)(v))
@@ -45043,12 +48969,13 @@
** clear the p->locked boolean.
*/
static void unlockBtreeMutex(Btree *p){
+ BtShared *pBt = p->pBt;
assert( p->locked==1 );
- assert( sqlite3_mutex_held(p->pBt->mutex) );
+ assert( sqlite3_mutex_held(pBt->mutex) );
assert( sqlite3_mutex_held(p->db->mutex) );
- assert( p->db==p->pBt->db );
+ assert( p->db==pBt->db );
- sqlite3_mutex_leave(p->pBt->mutex);
+ sqlite3_mutex_leave(pBt->mutex);
p->locked = 0;
}
@@ -45189,30 +49116,11 @@
*/
SQLITE_PRIVATE void sqlite3BtreeEnterAll(sqlite3 *db){
int i;
- Btree *p, *pLater;
+ Btree *p;
assert( sqlite3_mutex_held(db->mutex) );
for(i=0; i<db->nDb; i++){
p = db->aDb[i].pBt;
- assert( !p || (p->locked==0 && p->sharable) || p->pBt->db==p->db );
- if( p && p->sharable ){
- p->wantToLock++;
- if( !p->locked ){
- assert( p->wantToLock==1 );
- while( p->pPrev ) p = p->pPrev;
- /* Reason for ALWAYS: There must be at least on unlocked Btree in
- ** the chain. Otherwise the !p->locked test above would have failed */
- while( p->locked && ALWAYS(p->pNext) ) p = p->pNext;
- for(pLater = p->pNext; pLater; pLater=pLater->pNext){
- if( pLater->locked ){
- unlockBtreeMutex(pLater);
- }
- }
- while( p ){
- lockBtreeMutex(p);
- p = p->pNext;
- }
- }
- }
+ if( p ) sqlite3BtreeEnter(p);
}
}
SQLITE_PRIVATE void sqlite3BtreeLeaveAll(sqlite3 *db){
@@ -45221,16 +49129,18 @@
assert( sqlite3_mutex_held(db->mutex) );
for(i=0; i<db->nDb; i++){
p = db->aDb[i].pBt;
- if( p && p->sharable ){
- assert( p->wantToLock>0 );
- p->wantToLock--;
- if( p->wantToLock==0 ){
- unlockBtreeMutex(p);
- }
- }
+ if( p ) sqlite3BtreeLeave(p);
}
}
+/*
+** Return true if a particular Btree requires a lock. Return FALSE if
+** no lock is ever required since it is not sharable.
+*/
+SQLITE_PRIVATE int sqlite3BtreeSharable(Btree *p){
+ return p->sharable;
+}
+
#ifndef NDEBUG
/*
** Return true if the current thread holds the database connection
@@ -45255,97 +49165,42 @@
}
#endif /* NDEBUG */
-/*
-** Add a new Btree pointer to a BtreeMutexArray.
-** if the pointer can possibly be shared with
-** another database connection.
-**
-** The pointers are kept in sorted order by pBtree->pBt. That
-** way when we go to enter all the mutexes, we can enter them
-** in order without every having to backup and retry and without
-** worrying about deadlock.
-**
-** The number of shared btrees will always be small (usually 0 or 1)
-** so an insertion sort is an adequate algorithm here.
-*/
-SQLITE_PRIVATE void sqlite3BtreeMutexArrayInsert(BtreeMutexArray *pArray, Btree *pBtree){
- int i, j;
- BtShared *pBt;
- if( pBtree==0 || pBtree->sharable==0 ) return;
#ifndef NDEBUG
- {
- for(i=0; i<pArray->nMutex; i++){
- assert( pArray->aBtree[i]!=pBtree );
- }
- }
-#endif
- assert( pArray->nMutex>=0 );
- assert( pArray->nMutex<ArraySize(pArray->aBtree)-1 );
- pBt = pBtree->pBt;
- for(i=0; i<pArray->nMutex; i++){
- assert( pArray->aBtree[i]!=pBtree );
- if( pArray->aBtree[i]->pBt>pBt ){
- for(j=pArray->nMutex; j>i; j--){
- pArray->aBtree[j] = pArray->aBtree[j-1];
- }
- pArray->aBtree[i] = pBtree;
- pArray->nMutex++;
- return;
- }
- }
- pArray->aBtree[pArray->nMutex++] = pBtree;
-}
-
/*
-** Enter the mutex of every btree in the array. This routine is
-** called at the beginning of sqlite3VdbeExec(). The mutexes are
-** exited at the end of the same function.
+** Return true if the correct mutexes are held for accessing the
+** db->aDb[iDb].pSchema structure. The mutexes required for schema
+** access are:
+**
+** (1) The mutex on db
+** (2) if iDb!=1, then the mutex on db->aDb[iDb].pBt.
+**
+** If pSchema is not NULL, then iDb is computed from pSchema and
+** db using sqlite3SchemaToIndex().
*/
-SQLITE_PRIVATE void sqlite3BtreeMutexArrayEnter(BtreeMutexArray *pArray){
- int i;
- for(i=0; i<pArray->nMutex; i++){
- Btree *p = pArray->aBtree[i];
- /* Some basic sanity checking */
- assert( i==0 || pArray->aBtree[i-1]->pBt<p->pBt );
- assert( !p->locked || p->wantToLock>0 );
-
- /* We should already hold a lock on the database connection */
- assert( sqlite3_mutex_held(p->db->mutex) );
-
- /* The Btree is sharable because only sharable Btrees are entered
- ** into the array in the first place. */
- assert( p->sharable );
-
- p->wantToLock++;
- if( !p->locked ){
- lockBtreeMutex(p);
- }
- }
+SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3 *db, int iDb, Schema *pSchema){
+ Btree *p;
+ assert( db!=0 );
+ if( pSchema ) iDb = sqlite3SchemaToIndex(db, pSchema);
+ assert( iDb>=0 && iDb<db->nDb );
+ if( !sqlite3_mutex_held(db->mutex) ) return 0;
+ if( iDb==1 ) return 1;
+ p = db->aDb[iDb].pBt;
+ assert( p!=0 );
+ return p->sharable==0 || p->locked==1;
}
+#endif /* NDEBUG */
+#else /* SQLITE_THREADSAFE>0 above. SQLITE_THREADSAFE==0 below */
/*
-** Leave the mutex of every btree in the group.
+** The following are special cases for mutex enter routines for use
+** in single threaded applications that use shared cache. Except for
+** these two routines, all mutex operations are no-ops in that case and
+** are null #defines in btree.h.
+**
+** If shared cache is disabled, then all btree mutex routines, including
+** the ones below, are no-ops and are null #defines in btree.h.
*/
-SQLITE_PRIVATE void sqlite3BtreeMutexArrayLeave(BtreeMutexArray *pArray){
- int i;
- for(i=0; i<pArray->nMutex; i++){
- Btree *p = pArray->aBtree[i];
- /* Some basic sanity checking */
- assert( i==0 || pArray->aBtree[i-1]->pBt<p->pBt );
- assert( p->locked );
- assert( p->wantToLock>0 );
- /* We should already hold a lock on the database connection */
- assert( sqlite3_mutex_held(p->db->mutex) );
-
- p->wantToLock--;
- if( p->wantToLock==0 ){
- unlockBtreeMutex(p);
- }
- }
-}
-
-#else
SQLITE_PRIVATE void sqlite3BtreeEnter(Btree *p){
p->pBt->db = p->db;
}
@@ -45607,7 +49462,7 @@
/* If some other connection is holding an exclusive lock, the
** requested lock may not be obtained.
*/
- if( pBt->pWriter!=p && pBt->isExclusive ){
+ if( pBt->pWriter!=p && (pBt->btsFlags & BTS_EXCLUSIVE)!=0 ){
sqlite3ConnectionBlocked(p->db, pBt->pWriter->db);
return SQLITE_LOCKED_SHAREDCACHE;
}
@@ -45628,7 +49483,7 @@
sqlite3ConnectionBlocked(p->db, pIter->pBtree->db);
if( eLock==WRITE_LOCK ){
assert( p==pBt->pWriter );
- pBt->isPending = 1;
+ pBt->btsFlags |= BTS_PENDING;
}
return SQLITE_LOCKED_SHAREDCACHE;
}
@@ -45716,7 +49571,7 @@
** the setSharedCacheTableLock() procedure) held by Btree object p.
**
** This function assumes that Btree p has an open read or write
-** transaction. If it does not, then the BtShared.isPending variable
+** transaction. If it does not, then the BTS_PENDING flag
** may be incorrectly cleared.
*/
static void clearAllSharedCacheTableLocks(Btree *p){
@@ -45729,7 +49584,7 @@
while( *ppIter ){
BtLock *pLock = *ppIter;
- assert( pBt->isExclusive==0 || pBt->pWriter==pLock->pBtree );
+ assert( (pBt->btsFlags & BTS_EXCLUSIVE)==0 || pBt->pWriter==pLock->pBtree );
assert( pLock->pBtree->inTrans>=pLock->eLock );
if( pLock->pBtree==p ){
*ppIter = pLock->pNext;
@@ -45742,22 +49597,21 @@
}
}
- assert( pBt->isPending==0 || pBt->pWriter );
+ assert( (pBt->btsFlags & BTS_PENDING)==0 || pBt->pWriter );
if( pBt->pWriter==p ){
pBt->pWriter = 0;
- pBt->isExclusive = 0;
- pBt->isPending = 0;
+ pBt->btsFlags &= ~(BTS_EXCLUSIVE|BTS_PENDING);
}else if( pBt->nTransaction==2 ){
/* This function is called when Btree p is concluding its
** transaction. If there currently exists a writer, and p is not
** that writer, then the number of locks held by connections other
** than the writer must be about to drop to zero. In this case
- ** set the isPending flag to 0.
+ ** set the BTS_PENDING flag to 0.
**
- ** If there is not currently a writer, then BtShared.isPending must
+ ** If there is not currently a writer, then BTS_PENDING must
** be zero already. So this next line is harmless in that case.
*/
- pBt->isPending = 0;
+ pBt->btsFlags &= ~BTS_PENDING;
}
}
@@ -45769,8 +49623,7 @@
if( pBt->pWriter==p ){
BtLock *pLock;
pBt->pWriter = 0;
- pBt->isExclusive = 0;
- pBt->isPending = 0;
+ pBt->btsFlags &= ~(BTS_EXCLUSIVE|BTS_PENDING);
for(pLock=pBt->pLock; pLock; pLock=pLock->pNext){
assert( pLock->eLock==READ_LOCK || pLock->pBtree==p );
pLock->eLock = READ_LOCK;
@@ -46020,18 +49873,21 @@
int rc; /* Status code */
UnpackedRecord *pIdxKey; /* Unpacked index key */
char aSpace[150]; /* Temp space for pIdxKey - to avoid a malloc */
+ char *pFree = 0;
if( pKey ){
assert( nKey==(i64)(int)nKey );
- pIdxKey = sqlite3VdbeRecordUnpack(pCur->pKeyInfo, (int)nKey, pKey,
- aSpace, sizeof(aSpace));
+ pIdxKey = sqlite3VdbeAllocUnpackedRecord(
+ pCur->pKeyInfo, aSpace, sizeof(aSpace), &pFree
+ );
if( pIdxKey==0 ) return SQLITE_NOMEM;
+ sqlite3VdbeRecordUnpack(pCur->pKeyInfo, (int)nKey, pKey, pIdxKey);
}else{
pIdxKey = 0;
}
rc = sqlite3BtreeMovetoUnpacked(pCur, pIdxKey, nKey, bias, pRes);
- if( pKey ){
- sqlite3VdbeDeleteUnpackedRecord(pIdxKey);
+ if( pFree ){
+ sqlite3DbFree(pCur->pKeyInfo->db, pFree);
}
return rc;
}
@@ -46152,6 +50008,7 @@
*pRC = SQLITE_CORRUPT_BKPT;
goto ptrmap_exit;
}
+ assert( offset <= (int)pBt->usableSize-5 );
pPtrmap = (u8 *)sqlite3PagerGetData(pDbPage);
if( eType!=pPtrmap[offset] || get4byte(&pPtrmap[offset+1])!=parent ){
@@ -46191,6 +50048,11 @@
pPtrmap = (u8 *)sqlite3PagerGetData(pDbPage);
offset = PTRMAP_PTROFFSET(iPtrmap, key);
+ if( offset<0 ){
+ sqlite3PagerUnref(pDbPage);
+ return SQLITE_CORRUPT_BKPT;
+ }
+ assert( offset <= (int)pBt->usableSize-5 );
assert( pEType!=0 );
*pEType = pPtrmap[offset];
if( pPgno ) *pPgno = get4byte(&pPtrmap[offset+1]);
@@ -46214,7 +50076,9 @@
** This routine works only for pages that do not contain overflow cells.
*/
#define findCell(P,I) \
- ((P)->aData + ((P)->maskPage & get2byte(&(P)->aData[(P)->cellOffset+2*(I)])))
+ ((P)->aData + ((P)->maskPage & get2byte(&(P)->aCellIdx[2*(I)])))
+#define findCellv2(D,M,O,I) (D+(M&get2byte(D+(O+2*(I)))))
+
/*
** This a more complex version of findCell() that works for
@@ -46282,14 +50146,9 @@
/* This is the (easy) common case where the entire payload fits
** on the local page. No overflow is required.
*/
- int nSize; /* Total size of cell content in bytes */
- nSize = nPayload + n;
+ if( (pInfo->nSize = (u16)(n+nPayload))<4 ) pInfo->nSize = 4;
pInfo->nLocal = (u16)nPayload;
pInfo->iOverflow = 0;
- if( (nSize & ~3)==0 ){
- nSize = 4; /* Minimum cell size is 4 */
- }
- pInfo->nSize = (u16)nSize;
}else{
/* If the payload will not fit completely on the local page, we have
** to decide how much to store locally and how much to spill onto
@@ -46597,7 +50456,7 @@
*/
top -= nByte;
put2byte(&data[hdr+5], top);
- assert( top+nByte <= pPage->pBt->usableSize );
+ assert( top+nByte <= (int)pPage->pBt->usableSize );
*pIdx = top;
return SQLITE_OK;
}
@@ -46618,11 +50477,11 @@
assert( pPage->pBt!=0 );
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
assert( start>=pPage->hdrOffset+6+pPage->childPtrSize );
- assert( (start + size)<=pPage->pBt->usableSize );
+ assert( (start + size) <= (int)pPage->pBt->usableSize );
assert( sqlite3_mutex_held(pPage->pBt->mutex) );
assert( size>=0 ); /* Minimum cell size is 4 */
- if( pPage->pBt->secureDelete ){
+ if( pPage->pBt->btsFlags & BTS_SECURE_DELETE ){
/* Overwrite deleted information with zeros when the secure_delete
** option is enabled */
memset(&data[start], 0, size);
@@ -46661,7 +50520,7 @@
while( (pbegin = get2byte(&data[addr]))>0 ){
int pnext, psize, x;
assert( pbegin>addr );
- assert( pbegin<=pPage->pBt->usableSize-4 );
+ assert( pbegin <= (int)pPage->pBt->usableSize-4 );
pnext = get2byte(&data[pbegin]);
psize = get2byte(&data[pbegin+2]);
if( pbegin + psize + 3 >= pnext && pnext>0 ){
@@ -46725,6 +50584,7 @@
}else{
return SQLITE_CORRUPT_BKPT;
}
+ pPage->max1bytePayload = pBt->max1bytePayload;
return SQLITE_OK;
}
@@ -46767,6 +50627,8 @@
pPage->nOverflow = 0;
usableSize = pBt->usableSize;
pPage->cellOffset = cellOffset = hdr + 12 - 4*pPage->leaf;
+ pPage->aDataEnd = &data[usableSize];
+ pPage->aCellIdx = &data[cellOffset];
top = get2byteNotZero(&data[hdr+5]);
pPage->nCell = get2byte(&data[hdr+3]);
if( pPage->nCell>MX_CELL(pBt) ){
@@ -46858,7 +50720,7 @@
assert( sqlite3PagerGetData(pPage->pDbPage) == data );
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
assert( sqlite3_mutex_held(pBt->mutex) );
- if( pBt->secureDelete ){
+ if( pBt->btsFlags & BTS_SECURE_DELETE ){
memset(&data[hdr], 0, pBt->usableSize - hdr);
}
data[hdr] = (char)flags;
@@ -46870,6 +50732,8 @@
decodeFlags(pPage, flags);
pPage->hdrOffset = hdr;
pPage->cellOffset = first;
+ pPage->aDataEnd = &data[pBt->usableSize];
+ pPage->aCellIdx = &data[first];
pPage->nOverflow = 0;
assert( pBt->pageSize>=512 && pBt->pageSize<=65536 );
pPage->maskPage = (u16)(pBt->pageSize - 1);
@@ -47057,13 +50921,13 @@
** to problems with locking.
*/
SQLITE_PRIVATE int sqlite3BtreeOpen(
+ sqlite3_vfs *pVfs, /* VFS to use for this b-tree */
const char *zFilename, /* Name of the file containing the BTree database */
sqlite3 *db, /* Associated database handle */
Btree **ppBtree, /* Pointer to new Btree object written here */
int flags, /* Options */
int vfsFlags /* Flags passed through to sqlite3_vfs.xOpen() */
){
- sqlite3_vfs *pVfs; /* The VFS to use for this btree */
BtShared *pBt = 0; /* Shared part of btree structure */
Btree *p; /* Handle to return */
sqlite3_mutex *mutexOpen = 0; /* Prevents a race condition. Ticket #3537 */
@@ -47085,6 +50949,7 @@
#endif
assert( db!=0 );
+ assert( pVfs!=0 );
assert( sqlite3_mutex_held(db->mutex) );
assert( (flags&0xff)==flags ); /* flags fit in 8 bits */
@@ -47103,7 +50968,6 @@
if( (vfsFlags & SQLITE_OPEN_MAIN_DB)!=0 && (isMemdb || isTempDb) ){
vfsFlags = (vfsFlags & ~SQLITE_OPEN_MAIN_DB) | SQLITE_OPEN_TEMP_DB;
}
- pVfs = db->pVfs;
p = sqlite3MallocZero(sizeof(Btree));
if( !p ){
return SQLITE_NOMEM;
@@ -47124,17 +50988,24 @@
if( vfsFlags & SQLITE_OPEN_SHAREDCACHE ){
int nFullPathname = pVfs->mxPathname+1;
char *zFullPathname = sqlite3Malloc(nFullPathname);
- sqlite3_mutex *mutexShared;
+ MUTEX_LOGIC( sqlite3_mutex *mutexShared; )
p->sharable = 1;
if( !zFullPathname ){
sqlite3_free(p);
return SQLITE_NOMEM;
}
- sqlite3OsFullPathname(pVfs, zFilename, nFullPathname, zFullPathname);
+ rc = sqlite3OsFullPathname(pVfs, zFilename, nFullPathname, zFullPathname);
+ if( rc ){
+ sqlite3_free(zFullPathname);
+ sqlite3_free(p);
+ return rc;
+ }
+#if SQLITE_THREADSAFE
mutexOpen = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_OPEN);
sqlite3_mutex_enter(mutexOpen);
mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
sqlite3_mutex_enter(mutexShared);
+#endif
for(pBt=GLOBAL(BtShared*,sqlite3SharedCacheList); pBt; pBt=pBt->pNext){
assert( pBt->nRef>0 );
if( 0==strcmp(zFullPathname, sqlite3PagerFilename(pBt->pPager))
@@ -47202,9 +51073,9 @@
pBt->pCursor = 0;
pBt->pPage1 = 0;
- pBt->readOnly = sqlite3PagerIsreadonly(pBt->pPager);
+ if( sqlite3PagerIsreadonly(pBt->pPager) ) pBt->btsFlags |= BTS_READ_ONLY;
#ifdef SQLITE_SECURE_DELETE
- pBt->secureDelete = 1;
+ pBt->btsFlags |= BTS_SECURE_DELETE;
#endif
pBt->pageSize = (zDbHeader[16]<<8) | (zDbHeader[17]<<16);
if( pBt->pageSize<512 || pBt->pageSize>SQLITE_MAX_PAGE_SIZE
@@ -47225,7 +51096,7 @@
nReserve = 0;
}else{
nReserve = zDbHeader[20];
- pBt->pageSizeFixed = 1;
+ pBt->btsFlags |= BTS_PAGESIZE_FIXED;
#ifndef SQLITE_OMIT_AUTOVACUUM
pBt->autoVacuum = (get4byte(&zDbHeader[36 + 4*4])?1:0);
pBt->incrVacuum = (get4byte(&zDbHeader[36 + 7*4])?1:0);
@@ -47240,9 +51111,9 @@
/* Add the new BtShared object to the linked list sharable BtShareds.
*/
if( p->sharable ){
- sqlite3_mutex *mutexShared;
+ MUTEX_LOGIC( sqlite3_mutex *mutexShared; )
pBt->nRef = 1;
- mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+ MUTEX_LOGIC( mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);)
if( SQLITE_THREADSAFE && sqlite3GlobalConfig.bCoreMutex ){
pBt->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_FAST);
if( pBt->mutex==0 ){
@@ -47324,12 +51195,12 @@
*/
static int removeFromSharingList(BtShared *pBt){
#ifndef SQLITE_OMIT_SHARED_CACHE
- sqlite3_mutex *pMaster;
+ MUTEX_LOGIC( sqlite3_mutex *pMaster; )
BtShared *pList;
int removed = 0;
assert( sqlite3_mutex_notheld(pBt->mutex) );
- pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+ MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
sqlite3_mutex_enter(pMaster);
pBt->nRef--;
if( pBt->nRef<=0 ){
@@ -47496,7 +51367,6 @@
return rc;
}
-#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) || !defined(SQLITE_OMIT_VACUUM)
/*
** Change the default pages size and the number of reserved bytes per page.
** Or, if the page size has already been fixed, return SQLITE_READONLY
@@ -47514,7 +51384,7 @@
** If parameter nReserve is less than zero, then the number of reserved
** bytes per page is left unchanged.
**
-** If the iFix!=0 then the pageSizeFixed flag is set so that the page size
+** If the iFix!=0 then the BTS_PAGESIZE_FIXED flag is set so that the page size
** and autovacuum mode can no longer be changed.
*/
SQLITE_PRIVATE int sqlite3BtreeSetPageSize(Btree *p, int pageSize, int nReserve, int iFix){
@@ -47522,7 +51392,7 @@
BtShared *pBt = p->pBt;
assert( nReserve>=-1 && nReserve<=255 );
sqlite3BtreeEnter(p);
- if( pBt->pageSizeFixed ){
+ if( pBt->btsFlags & BTS_PAGESIZE_FIXED ){
sqlite3BtreeLeave(p);
return SQLITE_READONLY;
}
@@ -47539,7 +51409,7 @@
}
rc = sqlite3PagerSetPagesize(pBt->pPager, &pBt->pageSize, nReserve);
pBt->usableSize = pBt->pageSize - (u16)nReserve;
- if( iFix ) pBt->pageSizeFixed = 1;
+ if( iFix ) pBt->btsFlags |= BTS_PAGESIZE_FIXED;
sqlite3BtreeLeave(p);
return rc;
}
@@ -47551,6 +51421,7 @@
return p->pBt->pageSize;
}
+#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) || !defined(SQLITE_OMIT_VACUUM)
/*
** Return the number of bytes of space at the end of every page that
** are intentually left unused. This is the "reserved" space that is
@@ -47578,8 +51449,8 @@
}
/*
-** Set the secureDelete flag if newFlag is 0 or 1. If newFlag is -1,
-** then make no changes. Always return the value of the secureDelete
+** Set the BTS_SECURE_DELETE flag if newFlag is 0 or 1. If newFlag is -1,
+** then make no changes. Always return the value of the BTS_SECURE_DELETE
** setting after the change.
*/
SQLITE_PRIVATE int sqlite3BtreeSecureDelete(Btree *p, int newFlag){
@@ -47587,9 +51458,10 @@
if( p==0 ) return 0;
sqlite3BtreeEnter(p);
if( newFlag>=0 ){
- p->pBt->secureDelete = (newFlag!=0) ? 1 : 0;
+ p->pBt->btsFlags &= ~BTS_SECURE_DELETE;
+ if( newFlag ) p->pBt->btsFlags |= BTS_SECURE_DELETE;
}
- b = p->pBt->secureDelete;
+ b = (p->pBt->btsFlags & BTS_SECURE_DELETE)!=0;
sqlite3BtreeLeave(p);
return b;
}
@@ -47610,7 +51482,7 @@
u8 av = (u8)autoVacuum;
sqlite3BtreeEnter(p);
- if( pBt->pageSizeFixed && (av ?1:0)!=pBt->autoVacuum ){
+ if( (pBt->btsFlags & BTS_PAGESIZE_FIXED)!=0 && (av ?1:0)!=pBt->autoVacuum ){
rc = SQLITE_READONLY;
}else{
pBt->autoVacuum = av ?1:0;
@@ -47684,14 +51556,14 @@
#ifdef SQLITE_OMIT_WAL
if( page1[18]>1 ){
- pBt->readOnly = 1;
+ pBt->btsFlags |= BTS_READ_ONLY;
}
if( page1[19]>1 ){
goto page1_init_failed;
}
#else
if( page1[18]>2 ){
- pBt->readOnly = 1;
+ pBt->btsFlags |= BTS_READ_ONLY;
}
if( page1[19]>2 ){
goto page1_init_failed;
@@ -47705,7 +51577,7 @@
** may not be the latest version - there may be a newer one in the log
** file.
*/
- if( page1[19]==2 && pBt->doNotUseWAL==0 ){
+ if( page1[19]==2 && (pBt->btsFlags & BTS_NO_WAL)==0 ){
int isOpen = 0;
rc = sqlite3PagerOpenWal(pBt->pPager, &isOpen);
if( rc!=SQLITE_OK ){
@@ -47782,6 +51654,11 @@
pBt->minLocal = (u16)((pBt->usableSize-12)*32/255 - 23);
pBt->maxLeaf = (u16)(pBt->usableSize - 35);
pBt->minLeaf = (u16)((pBt->usableSize-12)*32/255 - 23);
+ if( pBt->maxLocal>127 ){
+ pBt->max1bytePayload = 127;
+ }else{
+ pBt->max1bytePayload = (u8)pBt->maxLocal;
+ }
assert( pBt->maxLeaf + 23 <= MX_CELL_SIZE(pBt) );
pBt->pPage1 = pPage1;
pBt->nPage = nPage;
@@ -47845,7 +51722,7 @@
data[23] = 32;
memset(&data[24], 0, 100-24);
zeroPage(pP1, PTF_INTKEY|PTF_LEAF|PTF_LEAFDATA );
- pBt->pageSizeFixed = 1;
+ pBt->btsFlags |= BTS_PAGESIZE_FIXED;
#ifndef SQLITE_OMIT_AUTOVACUUM
assert( pBt->autoVacuum==1 || pBt->autoVacuum==0 );
assert( pBt->incrVacuum==1 || pBt->incrVacuum==0 );
@@ -47909,7 +51786,7 @@
}
/* Write transactions are not possible on a read-only database */
- if( pBt->readOnly && wrflag ){
+ if( (pBt->btsFlags & BTS_READ_ONLY)!=0 && wrflag ){
rc = SQLITE_READONLY;
goto trans_begun;
}
@@ -47919,7 +51796,9 @@
** on this shared-btree structure and a second write transaction is
** requested, return SQLITE_LOCKED.
*/
- if( (wrflag && pBt->inTransaction==TRANS_WRITE) || pBt->isPending ){
+ if( (wrflag && pBt->inTransaction==TRANS_WRITE)
+ || (pBt->btsFlags & BTS_PENDING)!=0
+ ){
pBlock = pBt->pWriter->db;
}else if( wrflag>1 ){
BtLock *pIter;
@@ -47943,7 +51822,8 @@
rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK);
if( SQLITE_OK!=rc ) goto trans_begun;
- pBt->initiallyEmpty = (u8)(pBt->nPage==0);
+ pBt->btsFlags &= ~BTS_INITIALLY_EMPTY;
+ if( pBt->nPage==0 ) pBt->btsFlags |= BTS_INITIALLY_EMPTY;
do {
/* Call lockBtree() until either pBt->pPage1 is populated or
** lockBtree() returns something other than SQLITE_OK. lockBtree()
@@ -47955,7 +51835,7 @@
while( pBt->pPage1==0 && SQLITE_OK==(rc = lockBtree(pBt)) );
if( rc==SQLITE_OK && wrflag ){
- if( pBt->readOnly ){
+ if( (pBt->btsFlags & BTS_READ_ONLY)!=0 ){
rc = SQLITE_READONLY;
}else{
rc = sqlite3PagerBegin(pBt->pPager,wrflag>1,sqlite3TempInMemory(p->db));
@@ -47992,7 +51872,8 @@
#ifndef SQLITE_OMIT_SHARED_CACHE
assert( !pBt->pWriter );
pBt->pWriter = p;
- pBt->isExclusive = (u8)(wrflag>1);
+ pBt->btsFlags &= ~BTS_EXCLUSIVE;
+ if( wrflag>1 ) pBt->btsFlags |= BTS_EXCLUSIVE;
#endif
/* If the db-size header field is incorrect (as it may be if an old
@@ -48104,11 +51985,12 @@
if( eType==PTRMAP_OVERFLOW1 ){
CellInfo info;
btreeParseCellPtr(pPage, pCell, &info);
- if( info.iOverflow ){
- if( iFrom==get4byte(&pCell[info.iOverflow]) ){
- put4byte(&pCell[info.iOverflow], iTo);
- break;
- }
+ if( info.iOverflow
+ && pCell+info.iOverflow+3<=pPage->aData+pPage->maskPage
+ && iFrom==get4byte(&pCell[info.iOverflow])
+ ){
+ put4byte(&pCell[info.iOverflow], iTo);
+ break;
}
}else{
if( get4byte(pCell)==iFrom ){
@@ -48529,10 +52411,21 @@
** the rollback journal (which causes the transaction to commit) and
** drop locks.
**
+** Normally, if an error occurs while the pager layer is attempting to
+** finalize the underlying journal file, this function returns an error and
+** the upper layer will attempt a rollback. However, if the second argument
+** is non-zero then this b-tree transaction is part of a multi-file
+** transaction. In this case, the transaction has already been committed
+** (by deleting a master journal file) and the caller will ignore this
+** functions return code. So, even if an error occurs in the pager layer,
+** reset the b-tree objects internal state to indicate that the write
+** transaction has been closed. This is quite safe, as the pager will have
+** transitioned to the error state.
+**
** This will release the write lock on the database file. If there
** are no active cursors, it also releases the read lock.
*/
-SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree *p){
+SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree *p, int bCleanup){
if( p->inTrans==TRANS_NONE ) return SQLITE_OK;
sqlite3BtreeEnter(p);
@@ -48547,7 +52440,7 @@
assert( pBt->inTransaction==TRANS_WRITE );
assert( pBt->nTransaction>0 );
rc = sqlite3PagerCommitPhaseTwo(pBt->pPager);
- if( rc!=SQLITE_OK ){
+ if( rc!=SQLITE_OK && bCleanup==0 ){
sqlite3BtreeLeave(p);
return rc;
}
@@ -48567,7 +52460,7 @@
sqlite3BtreeEnter(p);
rc = sqlite3BtreeCommitPhaseOne(p, 0);
if( rc==SQLITE_OK ){
- rc = sqlite3BtreeCommitPhaseTwo(p);
+ rc = sqlite3BtreeCommitPhaseTwo(p, 0);
}
sqlite3BtreeLeave(p);
return rc;
@@ -48709,7 +52602,7 @@
BtShared *pBt = p->pBt;
sqlite3BtreeEnter(p);
assert( p->inTrans==TRANS_WRITE );
- assert( pBt->readOnly==0 );
+ assert( (pBt->btsFlags & BTS_READ_ONLY)==0 );
assert( iStatement>0 );
assert( iStatement>p->db->nSavepoint );
assert( pBt->inTransaction==TRANS_WRITE );
@@ -48744,7 +52637,9 @@
sqlite3BtreeEnter(p);
rc = sqlite3PagerSavepoint(pBt->pPager, op, iSavepoint);
if( rc==SQLITE_OK ){
- if( iSavepoint<0 && pBt->initiallyEmpty ) pBt->nPage = 0;
+ if( iSavepoint<0 && (pBt->btsFlags & BTS_INITIALLY_EMPTY)!=0 ){
+ pBt->nPage = 0;
+ }
rc = newDatabase(pBt);
pBt->nPage = get4byte(28 + pBt->pPage1->aData);
@@ -48814,11 +52709,12 @@
assert( wrFlag==0 || p->inTrans==TRANS_WRITE );
assert( pBt->pPage1 && pBt->pPage1->aData );
- if( NEVER(wrFlag && pBt->readOnly) ){
+ if( NEVER(wrFlag && (pBt->btsFlags & BTS_READ_ONLY)!=0) ){
return SQLITE_READONLY;
}
if( iTable==1 && btreePagecount(pBt)==0 ){
- return SQLITE_EMPTY;
+ assert( wrFlag==0 );
+ iTable = 0;
}
/* Now that no other errors can occur, finish filling in the BtCursor
@@ -49283,21 +53179,55 @@
/* Need to read this page properly. It contains some of the
** range of data that is being read (eOp==0) or written (eOp!=0).
*/
- DbPage *pDbPage;
+#ifdef SQLITE_DIRECT_OVERFLOW_READ
+ sqlite3_file *fd;
+#endif
int a = amt;
- rc = sqlite3PagerGet(pBt->pPager, nextPage, &pDbPage);
- if( rc==SQLITE_OK ){
- aPayload = sqlite3PagerGetData(pDbPage);
- nextPage = get4byte(aPayload);
- if( a + offset > ovflSize ){
- a = ovflSize - offset;
- }
- rc = copyPayload(&aPayload[offset+4], pBuf, a, eOp, pDbPage);
- sqlite3PagerUnref(pDbPage);
- offset = 0;
- amt -= a;
- pBuf += a;
+ if( a + offset > ovflSize ){
+ a = ovflSize - offset;
}
+
+#ifdef SQLITE_DIRECT_OVERFLOW_READ
+ /* If all the following are true:
+ **
+ ** 1) this is a read operation, and
+ ** 2) data is required from the start of this overflow page, and
+ ** 3) the database is file-backed, and
+ ** 4) there is no open write-transaction, and
+ ** 5) the database is not a WAL database,
+ **
+ ** then data can be read directly from the database file into the
+ ** output buffer, bypassing the page-cache altogether. This speeds
+ ** up loading large records that span many overflow pages.
+ */
+ if( eOp==0 /* (1) */
+ && offset==0 /* (2) */
+ && pBt->inTransaction==TRANS_READ /* (4) */
+ && (fd = sqlite3PagerFile(pBt->pPager))->pMethods /* (3) */
+ && pBt->pPage1->aData[19]==0x01 /* (5) */
+ ){
+ u8 aSave[4];
+ u8 *aWrite = &pBuf[-4];
+ memcpy(aSave, aWrite, 4);
+ rc = sqlite3OsRead(fd, aWrite, a+4, (i64)pBt->pageSize*(nextPage-1));
+ nextPage = get4byte(aWrite);
+ memcpy(aWrite, aSave, 4);
+ }else
+#endif
+
+ {
+ DbPage *pDbPage;
+ rc = sqlite3PagerGet(pBt->pPager, nextPage, &pDbPage);
+ if( rc==SQLITE_OK ){
+ aPayload = sqlite3PagerGetData(pDbPage);
+ nextPage = get4byte(aPayload);
+ rc = copyPayload(&aPayload[offset+4], pBuf, a, eOp, pDbPage);
+ sqlite3PagerUnref(pDbPage);
+ offset = 0;
+ }
+ }
+ amt -= a;
+ pBuf += a;
}
}
}
@@ -49483,7 +53413,7 @@
return SQLITE_OK;
}
-#ifndef NDEBUG
+#if 0
/*
** Page pParent is an internal (non-leaf) tree page. This function
** asserts that page number iChild is the left-child if the iIdx'th
@@ -49516,11 +53446,21 @@
assert( pCur->eState==CURSOR_VALID );
assert( pCur->iPage>0 );
assert( pCur->apPage[pCur->iPage] );
+
+ /* UPDATE: It is actually possible for the condition tested by the assert
+ ** below to be untrue if the database file is corrupt. This can occur if
+ ** one cursor has modified page pParent while a reference to it is held
+ ** by a second cursor. Which can only happen if a single page is linked
+ ** into more than one b-tree structure in a corrupt database. */
+#if 0
assertParentIndex(
pCur->apPage[pCur->iPage-1],
pCur->aiIdx[pCur->iPage-1],
pCur->apPage[pCur->iPage]->pgno
);
+#endif
+ testcase( pCur->aiIdx[pCur->iPage-1] > pCur->apPage[pCur->iPage-1]->nCell );
+
releasePage(pCur->apPage[pCur->iPage]);
pCur->iPage--;
pCur->info.nSize = 0;
@@ -49572,6 +53512,9 @@
releasePage(pCur->apPage[i]);
}
pCur->iPage = 0;
+ }else if( pCur->pgnoRoot==0 ){
+ pCur->eState = CURSOR_INVALID;
+ return SQLITE_OK;
}else{
rc = getAndInitPage(pBt, pCur->pgnoRoot, &pCur->apPage[0]);
if( rc!=SQLITE_OK ){
@@ -49681,7 +53624,7 @@
rc = moveToRoot(pCur);
if( rc==SQLITE_OK ){
if( pCur->eState==CURSOR_INVALID ){
- assert( pCur->apPage[pCur->iPage]->nCell==0 );
+ assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->nCell==0 );
*pRes = 1;
}else{
assert( pCur->apPage[pCur->iPage]->nCell>0 );
@@ -49720,7 +53663,7 @@
rc = moveToRoot(pCur);
if( rc==SQLITE_OK ){
if( CURSOR_INVALID==pCur->eState ){
- assert( pCur->apPage[pCur->iPage]->nCell==0 );
+ assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->nCell==0 );
*pRes = 1;
}else{
assert( pCur->eState==CURSOR_VALID );
@@ -49793,17 +53736,17 @@
if( rc ){
return rc;
}
- assert( pCur->apPage[pCur->iPage] );
- assert( pCur->apPage[pCur->iPage]->isInit );
- assert( pCur->apPage[pCur->iPage]->nCell>0 || pCur->eState==CURSOR_INVALID );
+ assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage] );
+ assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->isInit );
+ assert( pCur->eState==CURSOR_INVALID || pCur->apPage[pCur->iPage]->nCell>0 );
if( pCur->eState==CURSOR_INVALID ){
*pRes = -1;
- assert( pCur->apPage[pCur->iPage]->nCell==0 );
+ assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->nCell==0 );
return SQLITE_OK;
}
assert( pCur->apPage[0]->intKey || pIdxKey );
for(;;){
- int lwr, upr;
+ int lwr, upr, idx;
Pgno chldPg;
MemPage *pPage = pCur->apPage[pCur->iPage];
int c;
@@ -49819,14 +53762,14 @@
lwr = 0;
upr = pPage->nCell-1;
if( biasRight ){
- pCur->aiIdx[pCur->iPage] = (u16)upr;
+ pCur->aiIdx[pCur->iPage] = (u16)(idx = upr);
}else{
- pCur->aiIdx[pCur->iPage] = (u16)((upr+lwr)/2);
+ pCur->aiIdx[pCur->iPage] = (u16)(idx = (upr+lwr)/2);
}
for(;;){
- int idx = pCur->aiIdx[pCur->iPage]; /* Index of current cell in pPage */
u8 *pCell; /* Pointer to current cell in pPage */
+ assert( idx==pCur->aiIdx[pCur->iPage] );
pCur->info.nSize = 0;
pCell = findCell(pPage, idx) + pPage->childPtrSize;
if( pPage->intKey ){
@@ -49856,16 +53799,21 @@
** 2 bytes of the cell.
*/
int nCell = pCell[0];
- if( !(nCell & 0x80) && nCell<=pPage->maxLocal ){
+ if( nCell<=pPage->max1bytePayload
+ /* && (pCell+nCell)<pPage->aDataEnd */
+ ){
/* This branch runs if the record-size field of the cell is a
** single byte varint and the record fits entirely on the main
** b-tree page. */
+ testcase( pCell+nCell+1==pPage->aDataEnd );
c = sqlite3VdbeRecordCompare(nCell, (void*)&pCell[1], pIdxKey);
}else if( !(pCell[1] & 0x80)
&& (nCell = ((nCell&0x7f)<<7) + pCell[1])<=pPage->maxLocal
+ /* && (pCell+nCell+2)<=pPage->aDataEnd */
){
/* The record-size field is a 2 byte varint and the record
** fits entirely on the main b-tree page. */
+ testcase( pCell+nCell+2==pPage->aDataEnd );
c = sqlite3VdbeRecordCompare(nCell, (void*)&pCell[2], pIdxKey);
}else{
/* The record flows over onto one or more overflow pages. In
@@ -49893,7 +53841,6 @@
if( c==0 ){
if( pPage->intKey && !pPage->leaf ){
lwr = idx;
- upr = lwr - 1;
break;
}else{
*pRes = 0;
@@ -49909,9 +53856,9 @@
if( lwr>upr ){
break;
}
- pCur->aiIdx[pCur->iPage] = (u16)((lwr+upr)/2);
+ pCur->aiIdx[pCur->iPage] = (u16)(idx = (lwr+upr)/2);
}
- assert( lwr==upr+1 );
+ assert( lwr==upr+1 || (pPage->intKey && !pPage->leaf) );
assert( pPage->isInit );
if( pPage->leaf ){
chldPg = 0;
@@ -49983,7 +53930,13 @@
pPage = pCur->apPage[pCur->iPage];
idx = ++pCur->aiIdx[pCur->iPage];
assert( pPage->isInit );
- assert( idx<=pPage->nCell );
+
+ /* If the database file is corrupt, it is possible for the value of idx
+ ** to be invalid here. This can only occur if a second cursor modifies
+ ** the page while cursor pCur is holding a reference to it. Which can
+ ** only happen if the database is corrupt in such a way as to link the
+ ** page into more than one b-tree structure. */
+ testcase( idx>pPage->nCell );
pCur->info.nSize = 0;
pCur->validNKey = 0;
@@ -50176,8 +54129,10 @@
pTrunk = 0;
goto end_allocate_page;
}
+ assert( pTrunk!=0 );
+ assert( pTrunk->aData!=0 );
- k = get4byte(&pTrunk->aData[4]);
+ k = get4byte(&pTrunk->aData[4]); /* # of leaves on this trunk page */
if( k==0 && !searchList ){
/* The trunk has no leaves and the list is not being searched.
** So extract the trunk page itself and use it as the newly
@@ -50262,19 +54217,13 @@
u32 closest;
Pgno iPage;
unsigned char *aData = pTrunk->aData;
- rc = sqlite3PagerWrite(pTrunk->pDbPage);
- if( rc ){
- goto end_allocate_page;
- }
if( nearby>0 ){
u32 i;
int dist;
closest = 0;
- dist = get4byte(&aData[8]) - nearby;
- if( dist<0 ) dist = -dist;
+ dist = sqlite3AbsInt32(get4byte(&aData[8]) - nearby);
for(i=1; i<k; i++){
- int d2 = get4byte(&aData[8+i*4]) - nearby;
- if( d2<0 ) d2 = -d2;
+ int d2 = sqlite3AbsInt32(get4byte(&aData[8+i*4]) - nearby);
if( d2<dist ){
closest = i;
dist = d2;
@@ -50297,11 +54246,12 @@
TRACE(("ALLOCATE: %d was leaf %d of %d on trunk %d"
": %d more free pages\n",
*pPgno, closest+1, k, pTrunk->pgno, n-1));
+ rc = sqlite3PagerWrite(pTrunk->pDbPage);
+ if( rc ) goto end_allocate_page;
if( closest<k-1 ){
memcpy(&aData[8+closest*4], &aData[4+k*4], 4);
}
put4byte(&aData[4], k-1);
- assert( sqlite3PagerIswriteable(pTrunk->pDbPage) );
noContent = !btreeGetHasContent(pBt, *pPgno);
rc = btreeGetPage(pBt, *pPgno, ppPage, noContent);
if( rc==SQLITE_OK ){
@@ -50370,6 +54320,7 @@
}else{
*ppPage = 0;
}
+ assert( rc!=SQLITE_OK || sqlite3PagerIswriteable((*ppPage)->pDbPage) );
return rc;
}
@@ -50410,7 +54361,7 @@
nFree = get4byte(&pPage1->aData[36]);
put4byte(&pPage1->aData[36], nFree+1);
- if( pBt->secureDelete ){
+ if( pBt->btsFlags & BTS_SECURE_DELETE ){
/* If the secure_delete option is enabled, then
** always fully overwrite deleted information with zeros.
*/
@@ -50471,7 +54422,7 @@
if( rc==SQLITE_OK ){
put4byte(&pTrunk->aData[4], nLeaf+1);
put4byte(&pTrunk->aData[8+nLeaf*4], iPage);
- if( pPage && !pBt->secureDelete ){
+ if( pPage && (pBt->btsFlags & BTS_SECURE_DELETE)==0 ){
sqlite3PagerDontWrite(pPage->pDbPage);
}
rc = btreeSetHasContent(pBt, iPage);
@@ -50529,6 +54480,9 @@
if( info.iOverflow==0 ){
return SQLITE_OK; /* No overflow pages. Return without doing anything */
}
+ if( pCell+info.iOverflow+3 > pPage->aData+pPage->maskPage ){
+ return SQLITE_CORRUPT; /* Cell extends past end of page */
+ }
ovflPgno = get4byte(&pCell[info.iOverflow]);
assert( pBt->usableSize > 4 );
ovflPageSize = pBt->usableSize - 4;
@@ -50746,10 +54700,10 @@
** "sz" must be the number of bytes in the cell.
*/
static void dropCell(MemPage *pPage, int idx, int sz, int *pRC){
- int i; /* Loop counter */
u32 pc; /* Offset to cell content of cell being deleted */
u8 *data; /* pPage->aData */
u8 *ptr; /* Used to move bytes around within data[] */
+ u8 *endPtr; /* End of loop */
int rc; /* The return code */
int hdr; /* Beginning of the header. 0 most pages. 100 page 1 */
@@ -50760,7 +54714,7 @@
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
assert( sqlite3_mutex_held(pPage->pBt->mutex) );
data = pPage->aData;
- ptr = &data[pPage->cellOffset + 2*idx];
+ ptr = &pPage->aCellIdx[2*idx];
pc = get2byte(ptr);
hdr = pPage->hdrOffset;
testcase( pc==get2byte(&data[hdr+5]) );
@@ -50774,9 +54728,11 @@
*pRC = rc;
return;
}
- for(i=idx+1; i<pPage->nCell; i++, ptr+=2){
- ptr[0] = ptr[2];
- ptr[1] = ptr[3];
+ endPtr = &pPage->aCellIdx[2*pPage->nCell - 2];
+ assert( (SQLITE_PTR_TO_INT(ptr)&1)==0 ); /* ptr is always 2-byte aligned */
+ while( ptr<endPtr ){
+ *(u16*)ptr = *(u16*)&ptr[2];
+ ptr += 2;
}
pPage->nCell--;
put2byte(&data[hdr+3], pPage->nCell);
@@ -50816,6 +54772,7 @@
int cellOffset; /* Address of first cell pointer in data[] */
u8 *data; /* The content of the whole page */
u8 *ptr; /* Used for moving information around in data[] */
+ u8 *endPtr; /* End of the loop */
int nSkip = (iChild ? 4 : 0);
@@ -50859,16 +54816,19 @@
/* The allocateSpace() routine guarantees the following two properties
** if it returns success */
assert( idx >= end+2 );
- assert( idx+sz <= pPage->pBt->usableSize );
+ assert( idx+sz <= (int)pPage->pBt->usableSize );
pPage->nCell++;
pPage->nFree -= (u16)(2 + sz);
memcpy(&data[idx+nSkip], pCell+nSkip, sz-nSkip);
if( iChild ){
put4byte(&data[idx], iChild);
}
- for(j=end, ptr=&data[j]; j>ins; j-=2, ptr-=2){
- ptr[0] = ptr[-2];
- ptr[1] = ptr[-1];
+ ptr = &data[end];
+ endPtr = &data[ins];
+ assert( (SQLITE_PTR_TO_INT(ptr)&1)==0 ); /* ptr is always 2-byte aligned */
+ while( ptr>endPtr ){
+ *(u16*)ptr = *(u16*)&ptr[-2];
+ ptr -= 2;
}
put2byte(&data[ins], idx);
put2byte(&data[pPage->hdrOffset+3], pPage->nCell);
@@ -50902,20 +54862,22 @@
assert( pPage->nOverflow==0 );
assert( sqlite3_mutex_held(pPage->pBt->mutex) );
- assert( nCell>=0 && nCell<=MX_CELL(pPage->pBt) && MX_CELL(pPage->pBt)<=10921);
+ assert( nCell>=0 && nCell<=(int)MX_CELL(pPage->pBt)
+ && (int)MX_CELL(pPage->pBt)<=10921);
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
/* Check that the page has just been zeroed by zeroPage() */
assert( pPage->nCell==0 );
assert( get2byteNotZero(&data[hdr+5])==nUsable );
- pCellptr = &data[pPage->cellOffset + nCell*2];
+ pCellptr = &pPage->aCellIdx[nCell*2];
cellbody = nUsable;
for(i=nCell-1; i>=0; i--){
+ u16 sz = aSize[i];
pCellptr -= 2;
- cellbody -= aSize[i];
+ cellbody -= sz;
put2byte(pCellptr, cellbody);
- memcpy(&data[cellbody], apCell[i], aSize[i]);
+ memcpy(&data[cellbody], apCell[i], sz);
}
put2byte(&data[hdr+3], nCell);
put2byte(&data[hdr+5], cellbody);
@@ -51116,7 +55078,7 @@
assert( pFrom->isInit );
assert( pFrom->nFree>=iToHdr );
- assert( get2byte(&aFrom[iFromHdr+5])<=pBt->usableSize );
+ assert( get2byte(&aFrom[iFromHdr+5]) <= (int)pBt->usableSize );
/* Copy the b-tree node content from page pFrom to page pTo. */
iData = get2byte(&aFrom[iFromHdr+5]);
@@ -51296,13 +55258,15 @@
** four bytes of the divider cell. So the pointer is safe to use
** later on.
**
- ** Unless SQLite is compiled in secure-delete mode. In this case,
+ ** But not if we are in secure-delete mode. In secure-delete mode,
** the dropCell() routine will overwrite the entire cell with zeroes.
** In this case, temporarily copy the cell into the aOvflSpace[]
** buffer. It will be copied out again as soon as the aSpace[] buffer
** is allocated. */
- if( pBt->secureDelete ){
- int iOff = SQLITE_PTR_TO_INT(apDiv[i]) - SQLITE_PTR_TO_INT(pParent->aData);
+ if( pBt->btsFlags & BTS_SECURE_DELETE ){
+ int iOff;
+
+ iOff = SQLITE_PTR_TO_INT(apDiv[i]) - SQLITE_PTR_TO_INT(pParent->aData);
if( (iOff+szNew[i])>(int)pBt->usableSize ){
rc = SQLITE_CORRUPT_BKPT;
memset(apOld, 0, (i+1)*sizeof(MemPage*));
@@ -51369,12 +55333,24 @@
memcpy(pOld->aData, apOld[i]->aData, pBt->pageSize);
limit = pOld->nCell+pOld->nOverflow;
- for(j=0; j<limit; j++){
- assert( nCell<nMaxCells );
- apCell[nCell] = findOverflowCell(pOld, j);
- szCell[nCell] = cellSizePtr(pOld, apCell[nCell]);
- nCell++;
- }
+ if( pOld->nOverflow>0 ){
+ for(j=0; j<limit; j++){
+ assert( nCell<nMaxCells );
+ apCell[nCell] = findOverflowCell(pOld, j);
+ szCell[nCell] = cellSizePtr(pOld, apCell[nCell]);
+ nCell++;
+ }
+ }else{
+ u8 *aData = pOld->aData;
+ u16 maskPage = pOld->maskPage;
+ u16 cellOffset = pOld->cellOffset;
+ for(j=0; j<limit; j++){
+ assert( nCell<nMaxCells );
+ apCell[nCell] = findCellv2(aData, maskPage, cellOffset, j);
+ szCell[nCell] = cellSizePtr(pOld, apCell[nCell]);
+ nCell++;
+ }
+ }
if( i<nOld-1 && !leafData){
u16 sz = (u16)szNew[i];
u8 *pTemp;
@@ -51383,7 +55359,7 @@
pTemp = &aSpace1[iSpace1];
iSpace1 += sz;
assert( sz<=pBt->maxLocal+23 );
- assert( iSpace1<=pBt->pageSize );
+ assert( iSpace1 <= (int)pBt->pageSize );
memcpy(pTemp, apDiv[i], sz);
apCell[nCell] = pTemp+leafCorrection;
assert( leafCorrection==0 || leafCorrection==4 );
@@ -51472,8 +55448,14 @@
/* Either we found one or more cells (cntnew[0])>0) or pPage is
** a virtual root page. A virtual root page is when the real root
** page is page 1 and we are the only child of that page.
+ **
+ ** UPDATE: The assert() below is not necessarily true if the database
+ ** file is corrupt. The corruption will be detected and reported later
+ ** in this procedure so there is no need to act upon it now.
*/
+#if 0
assert( cntNew[0]>0 || (pParent->pgno==1 && pParent->nCell==0) );
+#endif
TRACE(("BALANCE: old: %d %d %d ",
apOld[0]->pgno,
@@ -51548,9 +55530,7 @@
}
}
if( minI>i ){
- int t;
MemPage *pT;
- t = apNew[i]->pgno;
pT = apNew[i];
apNew[i] = apNew[minI];
apNew[minI] = pT;
@@ -51629,7 +55609,7 @@
}
iOvflSpace += sz;
assert( sz<=pBt->maxLocal+23 );
- assert( iOvflSpace<=pBt->pageSize );
+ assert( iOvflSpace <= (int)pBt->pageSize );
insertCell(pParent, nxDiv, pCell, sz, pTemp, pNew->pgno, &rc);
if( rc!=SQLITE_OK ) goto balance_cleanup;
assert( sqlite3PagerIswriteable(pParent->pDbPage) );
@@ -51712,6 +55692,7 @@
/* Cell i is the cell immediately following the last cell on old
** sibling page j. If the siblings are not leaf pages of an
** intkey b-tree, then cell i was a divider cell. */
+ assert( j+1 < ArraySize(apCopy) );
pOld = apCopy[++j];
iNextOld = i + !leafData + pOld->nCell + pOld->nOverflow;
if( pOld->nOverflow ){
@@ -52024,7 +56005,8 @@
}
assert( cursorHoldsMutex(pCur) );
- assert( pCur->wrFlag && pBt->inTransaction==TRANS_WRITE && !pBt->readOnly );
+ assert( pCur->wrFlag && pBt->inTransaction==TRANS_WRITE
+ && (pBt->btsFlags & BTS_READ_ONLY)==0 );
assert( hasSharedCacheTableLock(p, pCur->pgnoRoot, pCur->pKeyInfo!=0, 2) );
/* Assert that the caller has been consistent. If this cursor was opened
@@ -52074,7 +56056,7 @@
rc = fillInCell(pPage, newCell, pKey, nKey, pData, nData, nZero, &szNew);
if( rc ) goto end_insert;
assert( szNew==cellSizePtr(pPage, newCell) );
- assert( szNew<=MX_CELL_SIZE(pBt) );
+ assert( szNew <= MX_CELL_SIZE(pBt) );
idx = pCur->aiIdx[pCur->iPage];
if( loc==0 ){
u16 szOld;
@@ -52153,7 +56135,7 @@
assert( cursorHoldsMutex(pCur) );
assert( pBt->inTransaction==TRANS_WRITE );
- assert( !pBt->readOnly );
+ assert( (pBt->btsFlags & BTS_READ_ONLY)==0 );
assert( pCur->wrFlag );
assert( hasSharedCacheTableLock(p, pCur->pgnoRoot, pCur->pKeyInfo!=0, 2) );
assert( !hasReadConflicts(p, pCur->pgnoRoot) );
@@ -52214,7 +56196,7 @@
pCell = findCell(pLeaf, pLeaf->nCell-1);
nCell = cellSizePtr(pLeaf, pCell);
- assert( MX_CELL_SIZE(pBt)>=nCell );
+ assert( MX_CELL_SIZE(pBt) >= nCell );
allocateTempSpace(pBt);
pTmp = pBt->pTmpSpace;
@@ -52274,7 +56256,7 @@
assert( sqlite3BtreeHoldsMutex(p) );
assert( pBt->inTransaction==TRANS_WRITE );
- assert( !pBt->readOnly );
+ assert( (pBt->btsFlags & BTS_READ_ONLY)==0 );
#ifdef SQLITE_OMIT_AUTOVACUUM
rc = allocateBtreePage(pBt, &pRoot, &pgnoRoot, 1, 0);
@@ -52648,7 +56630,9 @@
/* If auto-vacuum is disabled in this build and this is an auto-vacuum
** database, mark the database as read-only. */
#ifdef SQLITE_OMIT_AUTOVACUUM
- if( idx==BTREE_LARGEST_ROOT_PAGE && *pMeta>0 ) pBt->readOnly = 1;
+ if( idx==BTREE_LARGEST_ROOT_PAGE && *pMeta>0 ){
+ pBt->btsFlags |= BTS_READ_ONLY;
+ }
#endif
sqlite3BtreeLeave(p);
@@ -52694,6 +56678,11 @@
SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *pCur, i64 *pnEntry){
i64 nEntry = 0; /* Value to return in *pnEntry */
int rc; /* Return code */
+
+ if( pCur->pgnoRoot==0 ){
+ *pnEntry = 0;
+ return SQLITE_OK;
+ }
rc = moveToRoot(pCur);
/* Unless an error occurs, the following loop runs one iteration for each
@@ -53301,8 +57290,10 @@
**
** Return SQLITE_LOCKED if this or any other connection has an open
** transaction on the shared-cache the argument Btree is connected to.
+**
+** Parameter eMode is one of SQLITE_CHECKPOINT_PASSIVE, FULL or RESTART.
*/
-SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree *p){
+SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree *p, int eMode, int *pnLog, int *pnCkpt){
int rc = SQLITE_OK;
if( p ){
BtShared *pBt = p->pBt;
@@ -53310,7 +57301,7 @@
if( pBt->inTransaction!=TRANS_NONE ){
rc = SQLITE_LOCKED;
}else{
- rc = sqlite3PagerCheckpoint(pBt->pPager);
+ rc = sqlite3PagerCheckpoint(pBt->pPager, eMode, pnLog, pnCkpt);
}
sqlite3BtreeLeave(p);
}
@@ -53350,7 +57341,7 @@
**
** Just before the shared-btree is closed, the function passed as the
** xFree argument when the memory allocation was made is invoked on the
-** blob of allocated memory. This function should not call sqlite3_free()
+** blob of allocated memory. The xFree function should not call sqlite3_free()
** on the memory, the btree layer does that.
*/
SQLITE_PRIVATE void *sqlite3BtreeSchema(Btree *p, int nBytes, void(*xFree)(void *)){
@@ -53441,7 +57432,8 @@
if( !pCsr->wrFlag ){
return SQLITE_READONLY;
}
- assert( !pCsr->pBt->readOnly && pCsr->pBt->inTransaction==TRANS_WRITE );
+ assert( (pCsr->pBt->btsFlags & BTS_READ_ONLY)==0
+ && pCsr->pBt->inTransaction==TRANS_WRITE );
assert( hasSharedCacheTableLock(pCsr->pBtree, pCsr->pgnoRoot, 0, 2) );
assert( !hasReadConflicts(pCsr->pBtree, pCsr->pgnoRoot) );
assert( pCsr->apPage[pCsr->iPage]->intKey );
@@ -53476,13 +57468,13 @@
BtShared *pBt = pBtree->pBt;
int rc; /* Return code */
- assert( pBtree->inTrans==TRANS_NONE );
assert( iVersion==1 || iVersion==2 );
/* If setting the version fields to 1, do not automatically open the
** WAL connection, even if the version fields are currently set to 2.
*/
- pBt->doNotUseWAL = (u8)(iVersion==1);
+ pBt->btsFlags &= ~BTS_NO_WAL;
+ if( iVersion==1 ) pBt->btsFlags |= BTS_NO_WAL;
rc = sqlite3BtreeBeginTrans(pBtree, 0);
if( rc==SQLITE_OK ){
@@ -53499,7 +57491,7 @@
}
}
- pBt->doNotUseWAL = 0;
+ pBt->btsFlags &= ~BTS_NO_WAL;
return rc;
}
@@ -53623,6 +57615,16 @@
}
/*
+** Attempt to set the page size of the destination to match the page size
+** of the source.
+*/
+static int setDestPgsz(sqlite3_backup *p){
+ int rc;
+ rc = sqlite3BtreeSetPageSize(p->pDest,sqlite3BtreeGetPageSize(p->pSrc),-1,0);
+ return rc;
+}
+
+/*
** Create an sqlite3_backup process to copy the contents of zSrcDb from
** connection handle pSrcDb to zDestDb in pDestDb. If successful, return
** a pointer to the new sqlite3_backup object.
@@ -53675,10 +57677,11 @@
p->iNext = 1;
p->isAttached = 0;
- if( 0==p->pSrc || 0==p->pDest ){
- /* One (or both) of the named databases did not exist. An error has
- ** already been written into the pDestDb handle. All that is left
- ** to do here is free the sqlite3_backup structure.
+ if( 0==p->pSrc || 0==p->pDest || setDestPgsz(p)==SQLITE_NOMEM ){
+ /* One (or both) of the named databases did not exist or an OOM
+ ** error was hit. The error has already been written into the
+ ** pDestDb handle. All that is left to do here is free the
+ ** sqlite3_backup structure.
*/
sqlite3_free(p);
p = 0;
@@ -53713,6 +57716,10 @@
int nDestPgsz = sqlite3BtreeGetPageSize(p->pDest);
const int nCopy = MIN(nSrcPgsz, nDestPgsz);
const i64 iEnd = (i64)iSrcPg*(i64)nSrcPgsz;
+#ifdef SQLITE_HAS_CODEC
+ int nSrcReserve = sqlite3BtreeGetReserve(p->pSrc);
+ int nDestReserve = sqlite3BtreeGetReserve(p->pDest);
+#endif
int rc = SQLITE_OK;
i64 iOff;
@@ -53731,11 +57738,22 @@
#ifdef SQLITE_HAS_CODEC
/* Backup is not possible if the page size of the destination is changing
- ** a a codec is in use.
+ ** and a codec is in use.
*/
if( nSrcPgsz!=nDestPgsz && sqlite3PagerGetCodec(pDestPager)!=0 ){
rc = SQLITE_READONLY;
}
+
+ /* Backup is not possible if the number of bytes of reserve space differ
+ ** between source and destination. If there is a difference, try to
+ ** fix the destination to agree with the source. If that is not possible,
+ ** then the backup cannot proceed.
+ */
+ if( nSrcReserve!=nDestReserve ){
+ u32 newPgsz = nSrcPgsz;
+ rc = sqlite3PagerSetPagesize(pDestPager, &newPgsz, nSrcReserve);
+ if( rc==SQLITE_OK && newPgsz!=nSrcPgsz ) rc = SQLITE_READONLY;
+ }
#endif
/* This loop runs once for each destination page spanned by the source
@@ -53889,64 +57907,74 @@
** the case where the source and destination databases have the
** same schema version.
*/
- if( rc==SQLITE_DONE
- && (rc = sqlite3BtreeUpdateMeta(p->pDest,1,p->iDestSchema+1))==SQLITE_OK
- ){
- int nDestTruncate;
-
- if( p->pDestDb ){
- sqlite3ResetInternalSchema(p->pDestDb, 0);
- }
-
- /* Set nDestTruncate to the final number of pages in the destination
- ** database. The complication here is that the destination page
- ** size may be different to the source page size.
- **
- ** If the source page size is smaller than the destination page size,
- ** round up. In this case the call to sqlite3OsTruncate() below will
- ** fix the size of the file. However it is important to call
- ** sqlite3PagerTruncateImage() here so that any pages in the
- ** destination file that lie beyond the nDestTruncate page mark are
- ** journalled by PagerCommitPhaseOne() before they are destroyed
- ** by the file truncation.
- */
- assert( pgszSrc==sqlite3BtreeGetPageSize(p->pSrc) );
- assert( pgszDest==sqlite3BtreeGetPageSize(p->pDest) );
- if( pgszSrc<pgszDest ){
- int ratio = pgszDest/pgszSrc;
- nDestTruncate = (nSrcPage+ratio-1)/ratio;
- if( nDestTruncate==(int)PENDING_BYTE_PAGE(p->pDest->pBt) ){
- nDestTruncate--;
+ if( rc==SQLITE_DONE ){
+ rc = sqlite3BtreeUpdateMeta(p->pDest,1,p->iDestSchema+1);
+ if( rc==SQLITE_OK ){
+ if( p->pDestDb ){
+ sqlite3ResetInternalSchema(p->pDestDb, -1);
}
- }else{
- nDestTruncate = nSrcPage * (pgszSrc/pgszDest);
+ if( destMode==PAGER_JOURNALMODE_WAL ){
+ rc = sqlite3BtreeSetVersion(p->pDest, 2);
+ }
}
- sqlite3PagerTruncateImage(pDestPager, nDestTruncate);
-
- if( pgszSrc<pgszDest ){
- /* If the source page-size is smaller than the destination page-size,
- ** two extra things may need to happen:
+ if( rc==SQLITE_OK ){
+ int nDestTruncate;
+ /* Set nDestTruncate to the final number of pages in the destination
+ ** database. The complication here is that the destination page
+ ** size may be different to the source page size.
**
- ** * The destination may need to be truncated, and
- **
- ** * Data stored on the pages immediately following the
- ** pending-byte page in the source database may need to be
- ** copied into the destination database.
+ ** If the source page size is smaller than the destination page size,
+ ** round up. In this case the call to sqlite3OsTruncate() below will
+ ** fix the size of the file. However it is important to call
+ ** sqlite3PagerTruncateImage() here so that any pages in the
+ ** destination file that lie beyond the nDestTruncate page mark are
+ ** journalled by PagerCommitPhaseOne() before they are destroyed
+ ** by the file truncation.
*/
- const i64 iSize = (i64)pgszSrc * (i64)nSrcPage;
- sqlite3_file * const pFile = sqlite3PagerFile(pDestPager);
+ assert( pgszSrc==sqlite3BtreeGetPageSize(p->pSrc) );
+ assert( pgszDest==sqlite3BtreeGetPageSize(p->pDest) );
+ if( pgszSrc<pgszDest ){
+ int ratio = pgszDest/pgszSrc;
+ nDestTruncate = (nSrcPage+ratio-1)/ratio;
+ if( nDestTruncate==(int)PENDING_BYTE_PAGE(p->pDest->pBt) ){
+ nDestTruncate--;
+ }
+ }else{
+ nDestTruncate = nSrcPage * (pgszSrc/pgszDest);
+ }
+ sqlite3PagerTruncateImage(pDestPager, nDestTruncate);
- assert( pFile );
- assert( (i64)nDestTruncate*(i64)pgszDest >= iSize || (
- nDestTruncate==(int)(PENDING_BYTE_PAGE(p->pDest->pBt)-1)
- && iSize>=PENDING_BYTE && iSize<=PENDING_BYTE+pgszDest
- ));
- if( SQLITE_OK==(rc = sqlite3PagerCommitPhaseOne(pDestPager, 0, 1))
- && SQLITE_OK==(rc = backupTruncateFile(pFile, iSize))
- && SQLITE_OK==(rc = sqlite3PagerSync(pDestPager))
- ){
+ if( pgszSrc<pgszDest ){
+ /* If the source page-size is smaller than the destination page-size,
+ ** two extra things may need to happen:
+ **
+ ** * The destination may need to be truncated, and
+ **
+ ** * Data stored on the pages immediately following the
+ ** pending-byte page in the source database may need to be
+ ** copied into the destination database.
+ */
+ const i64 iSize = (i64)pgszSrc * (i64)nSrcPage;
+ sqlite3_file * const pFile = sqlite3PagerFile(pDestPager);
i64 iOff;
- i64 iEnd = MIN(PENDING_BYTE + pgszDest, iSize);
+ i64 iEnd;
+
+ assert( pFile );
+ assert( (i64)nDestTruncate*(i64)pgszDest >= iSize || (
+ nDestTruncate==(int)(PENDING_BYTE_PAGE(p->pDest->pBt)-1)
+ && iSize>=PENDING_BYTE && iSize<=PENDING_BYTE+pgszDest
+ ));
+
+ /* This call ensures that all data required to recreate the original
+ ** database has been stored in the journal for pDestPager and the
+ ** journal synced to disk. So at this point we may safely modify
+ ** the database file in any way, knowing that if a power failure
+ ** occurs, the original database will be reconstructed from the
+ ** journal file. */
+ rc = sqlite3PagerCommitPhaseOne(pDestPager, 0, 1);
+
+ /* Write the extra pages and truncate the database file as required */
+ iEnd = MIN(PENDING_BYTE + pgszDest, iSize);
for(
iOff=PENDING_BYTE+pgszSrc;
rc==SQLITE_OK && iOff<iEnd;
@@ -53961,16 +57989,24 @@
}
sqlite3PagerUnref(pSrcPg);
}
+ if( rc==SQLITE_OK ){
+ rc = backupTruncateFile(pFile, iSize);
+ }
+
+ /* Sync the database file to disk. */
+ if( rc==SQLITE_OK ){
+ rc = sqlite3PagerSync(pDestPager);
+ }
+ }else{
+ rc = sqlite3PagerCommitPhaseOne(pDestPager, 0, 0);
}
- }else{
- rc = sqlite3PagerCommitPhaseOne(pDestPager, 0, 0);
- }
-
- /* Finish committing the transaction to the destination database. */
- if( SQLITE_OK==rc
- && SQLITE_OK==(rc = sqlite3BtreeCommitPhaseTwo(p->pDest))
- ){
- rc = SQLITE_DONE;
+
+ /* Finish committing the transaction to the destination database. */
+ if( SQLITE_OK==rc
+ && SQLITE_OK==(rc = sqlite3BtreeCommitPhaseTwo(p->pDest, 0))
+ ){
+ rc = SQLITE_DONE;
+ }
}
}
@@ -53982,7 +58018,7 @@
if( bCloseTrans ){
TESTONLY( int rc2 );
TESTONLY( rc2 = ) sqlite3BtreeCommitPhaseOne(p->pSrc, 0);
- TESTONLY( rc2 |= ) sqlite3BtreeCommitPhaseTwo(p->pSrc);
+ TESTONLY( rc2 |= ) sqlite3BtreeCommitPhaseTwo(p->pSrc, 0);
assert( rc2==SQLITE_OK );
}
@@ -54004,14 +58040,14 @@
*/
SQLITE_API int sqlite3_backup_finish(sqlite3_backup *p){
sqlite3_backup **pp; /* Ptr to head of pagers backup list */
- sqlite3_mutex *mutex; /* Mutex to protect source database */
+ MUTEX_LOGIC( sqlite3_mutex *mutex; ) /* Mutex to protect source database */
int rc; /* Value to return */
/* Enter the mutexes */
if( p==0 ) return SQLITE_OK;
sqlite3_mutex_enter(p->pSrcDb->mutex);
sqlite3BtreeEnter(p->pSrc);
- mutex = p->pSrcDb->mutex;
+ MUTEX_LOGIC( mutex = p->pSrcDb->mutex; )
if( p->pDestDb ){
sqlite3_mutex_enter(p->pDestDb->mutex);
}
@@ -54087,7 +58123,11 @@
** has been modified by a transaction on the source pager. Copy
** the new data into the backup.
*/
- int rc = backupOnePage(p, iPage, aData);
+ int rc;
+ assert( p->pDestDb );
+ sqlite3_mutex_enter(p->pDestDb->mutex);
+ rc = backupOnePage(p, iPage, aData);
+ sqlite3_mutex_leave(p->pDestDb->mutex);
assert( rc!=SQLITE_BUSY && rc!=SQLITE_LOCKED );
if( rc!=SQLITE_OK ){
p->rc = rc;
@@ -54126,10 +58166,20 @@
*/
SQLITE_PRIVATE int sqlite3BtreeCopyFile(Btree *pTo, Btree *pFrom){
int rc;
+ sqlite3_file *pFd; /* File descriptor for database pTo */
sqlite3_backup b;
sqlite3BtreeEnter(pTo);
sqlite3BtreeEnter(pFrom);
+ assert( sqlite3BtreeIsInTrans(pTo) );
+ pFd = sqlite3PagerFile(sqlite3BtreePager(pTo));
+ if( pFd->pMethods ){
+ i64 nByte = sqlite3BtreeGetPageSize(pFrom)*(i64)sqlite3BtreeLastPage(pFrom);
+ rc = sqlite3OsFileControl(pFd, SQLITE_FCNTL_OVERWRITE, &nByte);
+ if( rc==SQLITE_NOTFOUND ) rc = SQLITE_OK;
+ if( rc ) goto copy_finished;
+ }
+
/* Set up an sqlite3_backup object. sqlite3_backup.pDestDb must be set
** to 0. This is used by the implementations of sqlite3_backup_step()
** and sqlite3_backup_finish() to detect that they are being called
@@ -54152,9 +58202,13 @@
assert( b.rc!=SQLITE_OK );
rc = sqlite3_backup_finish(&b);
if( rc==SQLITE_OK ){
- pTo->pBt->pageSizeFixed = 0;
+ pTo->pBt->btsFlags &= ~BTS_PAGESIZE_FIXED;
+ }else{
+ sqlite3PagerClearCache(sqlite3BtreePager(b.pDest));
}
+ assert( sqlite3BtreeIsInTrans(pTo)==0 );
+copy_finished:
sqlite3BtreeLeave(pFrom);
sqlite3BtreeLeave(pTo);
return rc;
@@ -54182,12 +58236,6 @@
*/
/*
-** Call sqlite3VdbeMemExpandBlob() on the supplied value (type Mem*)
-** P if required.
-*/
-#define expandBlob(P) (((P)->flags&MEM_Zero)?sqlite3VdbeMemExpandBlob(P):0)
-
-/*
** If pMem is an object with a valid string representation, this routine
** ensures the internal encoding for the string representation is
** 'desiredEnc', one of SQLITE_UTF8, SQLITE_UTF16LE or SQLITE_UTF16BE.
@@ -54286,7 +58334,7 @@
int f;
assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) );
assert( (pMem->flags&MEM_RowSet)==0 );
- expandBlob(pMem);
+ ExpandBlob(pMem);
f = pMem->flags;
if( (f&(MEM_Str|MEM_Blob)) && pMem->z!=pMem->zMalloc ){
if( sqlite3VdbeMemGrow(pMem, pMem->n + 2, 1) ){
@@ -54434,24 +58482,18 @@
*/
SQLITE_PRIVATE void sqlite3VdbeMemReleaseExternal(Mem *p){
assert( p->db==0 || sqlite3_mutex_held(p->db->mutex) );
- testcase( p->flags & MEM_Agg );
- testcase( p->flags & MEM_Dyn );
- testcase( p->flags & MEM_RowSet );
- testcase( p->flags & MEM_Frame );
- if( p->flags&(MEM_Agg|MEM_Dyn|MEM_RowSet|MEM_Frame) ){
- if( p->flags&MEM_Agg ){
- sqlite3VdbeMemFinalize(p, p->u.pDef);
- assert( (p->flags & MEM_Agg)==0 );
- sqlite3VdbeMemRelease(p);
- }else if( p->flags&MEM_Dyn && p->xDel ){
- assert( (p->flags&MEM_RowSet)==0 );
- p->xDel((void *)p->z);
- p->xDel = 0;
- }else if( p->flags&MEM_RowSet ){
- sqlite3RowSetClear(p->u.pRowSet);
- }else if( p->flags&MEM_Frame ){
- sqlite3VdbeMemSetNull(p);
- }
+ if( p->flags&MEM_Agg ){
+ sqlite3VdbeMemFinalize(p, p->u.pDef);
+ assert( (p->flags & MEM_Agg)==0 );
+ sqlite3VdbeMemRelease(p);
+ }else if( p->flags&MEM_Dyn && p->xDel ){
+ assert( (p->flags&MEM_RowSet)==0 );
+ p->xDel((void *)p->z);
+ p->xDel = 0;
+ }else if( p->flags&MEM_RowSet ){
+ sqlite3RowSetClear(p->u.pRowSet);
+ }else if( p->flags&MEM_Frame ){
+ sqlite3VdbeMemSetNull(p);
}
}
@@ -54461,7 +58503,7 @@
** (Mem.type==SQLITE_TEXT).
*/
SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p){
- sqlite3VdbeMemReleaseExternal(p);
+ VdbeMemRelease(p);
sqlite3DbFree(p->db, p->zMalloc);
p->z = 0;
p->zMalloc = 0;
@@ -54530,7 +58572,7 @@
}else if( flags & MEM_Real ){
return doubleToInt64(pMem->r);
}else if( flags & (MEM_Str|MEM_Blob) ){
- i64 value;
+ i64 value = 0;
assert( pMem->z || pMem->n==0 );
testcase( pMem->z==0 );
sqlite3Atoi64(pMem->z, &value, pMem->n, pMem->enc);
@@ -54757,7 +58799,7 @@
** This is used for testing and debugging only - to make sure shallow
** copies are not misused.
*/
-SQLITE_PRIVATE void sqlite3VdbeMemPrepareToChange(Vdbe *pVdbe, Mem *pMem){
+SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe *pVdbe, Mem *pMem){
int i;
Mem *pX;
for(i=1, pX=&pVdbe->aMem[1]; i<=pVdbe->nMem; i++, pX++){
@@ -54783,7 +58825,7 @@
*/
SQLITE_PRIVATE void sqlite3VdbeMemShallowCopy(Mem *pTo, const Mem *pFrom, int srcType){
assert( (pFrom->flags & MEM_RowSet)==0 );
- sqlite3VdbeMemReleaseExternal(pTo);
+ VdbeMemRelease(pTo);
memcpy(pTo, pFrom, MEMCELLSIZE);
pTo->xDel = 0;
if( (pFrom->flags&MEM_Static)==0 ){
@@ -54801,7 +58843,7 @@
int rc = SQLITE_OK;
assert( (pFrom->flags & MEM_RowSet)==0 );
- sqlite3VdbeMemReleaseExternal(pTo);
+ VdbeMemRelease(pTo);
memcpy(pTo, pFrom, MEMCELLSIZE);
pTo->flags &= ~MEM_Dyn;
@@ -55129,7 +59171,7 @@
}
assert( (MEM_Blob>>3) == MEM_Str );
pVal->flags |= (pVal->flags & MEM_Blob)>>3;
- expandBlob(pVal);
+ ExpandBlob(pVal);
if( pVal->flags&MEM_Str ){
sqlite3VdbeChangeEncoding(pVal, enc & ~SQLITE_UTF16_ALIGNED);
if( (enc & SQLITE_UTF16_ALIGNED)!=0 && 1==(1&SQLITE_PTR_TO_INT(pVal->z)) ){
@@ -55138,7 +59180,7 @@
return 0;
}
}
- sqlite3VdbeMemNulTerminate(pVal); /* IMP: R-59893-45467 */
+ sqlite3VdbeMemNulTerminate(pVal); /* IMP: R-31275-44060 */
}else{
assert( (pVal->flags&MEM_Blob)==0 );
sqlite3VdbeMemStringify(pVal, enc);
@@ -55195,11 +59237,11 @@
}
op = pExpr->op;
- /* op can only be TK_REGISTER if we have compiled with SQLITE_ENABLE_STAT2.
+ /* op can only be TK_REGISTER if we have compiled with SQLITE_ENABLE_STAT3.
** The ifdef here is to enable us to achieve 100% branch test coverage even
- ** when SQLITE_ENABLE_STAT2 is omitted.
+ ** when SQLITE_ENABLE_STAT3 is omitted.
*/
-#ifdef SQLITE_ENABLE_STAT2
+#ifdef SQLITE_ENABLE_STAT3
if( op==TK_REGISTER ) op = pExpr->op2;
#else
if( NEVER(op==TK_REGISTER) ) op = pExpr->op2;
@@ -55240,11 +59282,19 @@
/* This branch happens for multiple negative signs. Ex: -(-5) */
if( SQLITE_OK==sqlite3ValueFromExpr(db,pExpr->pLeft,enc,affinity,&pVal) ){
sqlite3VdbeMemNumerify(pVal);
- pVal->u.i = -1 * pVal->u.i;
- /* (double)-1 In case of SQLITE_OMIT_FLOATING_POINT... */
- pVal->r = (double)-1 * pVal->r;
+ if( pVal->u.i==SMALLEST_INT64 ){
+ pVal->flags &= MEM_Int;
+ pVal->flags |= MEM_Real;
+ pVal->r = (double)LARGEST_INT64;
+ }else{
+ pVal->u.i = -pVal->u.i;
+ }
+ pVal->r = -pVal->r;
sqlite3ValueApplyAffinity(pVal, affinity, enc);
}
+ }else if( op==TK_NULL ){
+ pVal = sqlite3ValueNew(db);
+ if( pVal==0 ) goto no_mem;
}
#ifndef SQLITE_OMIT_BLOB_LITERAL
else if( op==TK_BLOB ){
@@ -55471,7 +59521,6 @@
pOp->p3 = p3;
pOp->p4.p = 0;
pOp->p4type = P4_NOTUSED;
- p->expired = 0;
#ifdef SQLITE_DEBUG
pOp->zComment = 0;
if( sqlite3VdbeAddopTrace ) sqlite3VdbePrintOp(0, i, &p->aOp[i]);
@@ -55511,6 +59560,21 @@
}
/*
+** Add an OP_ParseSchema opcode. This routine is broken out from
+** sqlite3VdbeAddOp4() since it needs to also needs to mark all btrees
+** as having been used.
+**
+** The zWhere string must have been obtained from sqlite3_malloc().
+** This routine will take ownership of the allocated memory.
+*/
+SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe *p, int iDb, char *zWhere){
+ int j;
+ int addr = sqlite3VdbeAddOp3(p, OP_ParseSchema, iDb, 0, 0);
+ sqlite3VdbeChangeP4(p, addr, zWhere, P4_DYNAMIC);
+ for(j=0; j<p->db->nDb; j++) sqlite3VdbeUsesBtree(p, j);
+}
+
+/*
** Add an opcode that includes the p4 value as an integer.
*/
SQLITE_PRIVATE int sqlite3VdbeAddOp4Int(
@@ -55723,7 +59787,7 @@
pOp->opflags = sqlite3OpcodeProperty[opcode];
if( opcode==OP_Function || opcode==OP_AggStep ){
if( pOp->p5>nMaxArgs ) nMaxArgs = pOp->p5;
- }else if( opcode==OP_Transaction && pOp->p2!=0 ){
+ }else if( (opcode==OP_Transaction && pOp->p2!=0) || opcode==OP_Vacuum ){
p->readOnly = 0;
#ifndef SQLITE_OMIT_VIRTUALTABLE
}else if( opcode==OP_VUpdate ){
@@ -55735,6 +59799,12 @@
n = pOp[-1].p1;
if( n>nMaxArgs ) nMaxArgs = n;
#endif
+ }else if( opcode==OP_Next || opcode==OP_SorterNext ){
+ pOp->p4.xAdvance = sqlite3BtreeNext;
+ pOp->p4type = P4_ADVANCE;
+ }else if( opcode==OP_Prev ){
+ pOp->p4.xAdvance = sqlite3BtreePrevious;
+ pOp->p4type = P4_ADVANCE;
}
if( (pOp->opflags & OPFLG_JUMP)!=0 && pOp->p2<0 ){
@@ -55772,7 +59842,7 @@
assert( aOp && !p->db->mallocFailed );
/* Check that sqlite3VdbeUsesBtree() was not called on this VM */
- assert( p->aMutex.nMutex==0 );
+ assert( p->btreeMask==0 );
resolveP2Values(p, pnMaxArg);
*pnOp = p->nOp;
@@ -55826,10 +59896,9 @@
** static array using sqlite3VdbeAddOpList but we want to make a
** few minor changes to the program.
*/
-SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe *p, int addr, int val){
+SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe *p, u32 addr, int val){
assert( p!=0 );
- assert( addr>=0 );
- if( p->nOp>addr ){
+ if( ((u32)p->nOp)>addr ){
p->aOp[addr].p1 = val;
}
}
@@ -55838,10 +59907,9 @@
** Change the value of the P2 operand for a specific instruction.
** This routine is useful for setting a jump destination.
*/
-SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe *p, int addr, int val){
+SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe *p, u32 addr, int val){
assert( p!=0 );
- assert( addr>=0 );
- if( p->nOp>addr ){
+ if( ((u32)p->nOp)>addr ){
p->aOp[addr].p2 = val;
}
}
@@ -55849,10 +59917,9 @@
/*
** Change the value of the P3 operand for a specific instruction.
*/
-SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe *p, int addr, int val){
+SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe *p, u32 addr, int val){
assert( p!=0 );
- assert( addr>=0 );
- if( p->nOp>addr ){
+ if( ((u32)p->nOp)>addr ){
p->aOp[addr].p3 = val;
}
}
@@ -55874,7 +59941,8 @@
** the address of the next instruction to be coded.
*/
SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe *p, int addr){
- sqlite3VdbeChangeP2(p, addr, p->nOp);
+ assert( addr>=0 || p->db->mallocFailed );
+ if( addr>=0 ) sqlite3VdbeChangeP2(p, addr, p->nOp);
}
@@ -55968,18 +60036,15 @@
}
/*
-** Change N opcodes starting at addr to No-ops.
+** Change the opcode at addr into OP_Noop
*/
-SQLITE_PRIVATE void sqlite3VdbeChangeToNoop(Vdbe *p, int addr, int N){
+SQLITE_PRIVATE void sqlite3VdbeChangeToNoop(Vdbe *p, int addr){
if( p->aOp ){
VdbeOp *pOp = &p->aOp[addr];
sqlite3 *db = p->db;
- while( N-- ){
- freeP4(db, pOp->p4type, pOp->p4.p);
- memset(pOp, 0, sizeof(pOp[0]));
- pOp->opcode = OP_Noop;
- pOp++;
- }
+ freeP4(db, pOp->p4type, pOp->p4.p);
+ memset(pOp, 0, sizeof(pOp[0]));
+ pOp->opcode = OP_Noop;
}
}
@@ -56082,30 +60147,29 @@
** makes the code easier to read during debugging. None of this happens
** in a production build.
*/
-SQLITE_PRIVATE void sqlite3VdbeComment(Vdbe *p, const char *zFormat, ...){
- va_list ap;
- if( !p ) return;
+static void vdbeVComment(Vdbe *p, const char *zFormat, va_list ap){
assert( p->nOp>0 || p->aOp==0 );
assert( p->aOp==0 || p->aOp[p->nOp-1].zComment==0 || p->db->mallocFailed );
if( p->nOp ){
- char **pz = &p->aOp[p->nOp-1].zComment;
+ assert( p->aOp );
+ sqlite3DbFree(p->db, p->aOp[p->nOp-1].zComment);
+ p->aOp[p->nOp-1].zComment = sqlite3VMPrintf(p->db, zFormat, ap);
+ }
+}
+SQLITE_PRIVATE void sqlite3VdbeComment(Vdbe *p, const char *zFormat, ...){
+ va_list ap;
+ if( p ){
va_start(ap, zFormat);
- sqlite3DbFree(p->db, *pz);
- *pz = sqlite3VMPrintf(p->db, zFormat, ap);
+ vdbeVComment(p, zFormat, ap);
va_end(ap);
}
}
SQLITE_PRIVATE void sqlite3VdbeNoopComment(Vdbe *p, const char *zFormat, ...){
va_list ap;
- if( !p ) return;
- sqlite3VdbeAddOp0(p, OP_Noop);
- assert( p->nOp>0 || p->aOp==0 );
- assert( p->aOp==0 || p->aOp[p->nOp-1].zComment==0 || p->db->mallocFailed );
- if( p->nOp ){
- char **pz = &p->aOp[p->nOp-1].zComment;
+ if( p ){
+ sqlite3VdbeAddOp0(p, OP_Noop);
va_start(ap, zFormat);
- sqlite3DbFree(p->db, *pz);
- *pz = sqlite3VMPrintf(p->db, zFormat, ap);
+ vdbeVComment(p, zFormat, ap);
va_end(ap);
}
}
@@ -56135,7 +60199,7 @@
SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetOp(Vdbe *p, int addr){
/* C89 specifies that the constant "dummy" will be initialized to all
** zeros, which is correct. MSVC generates a warning, nevertheless. */
- static const VdbeOp dummy; /* Ignore the MSVC warning about no initializer */
+ static VdbeOp dummy; /* Ignore the MSVC warning about no initializer */
assert( p->magic==VDBE_MAGIC_INIT );
if( addr<0 ){
#ifdef SQLITE_OMIT_TRACE
@@ -56215,13 +60279,14 @@
}
case P4_MEM: {
Mem *pMem = pOp->p4.pMem;
- assert( (pMem->flags & MEM_Null)==0 );
if( pMem->flags & MEM_Str ){
zP4 = pMem->z;
}else if( pMem->flags & MEM_Int ){
sqlite3_snprintf(nTemp, zTemp, "%lld", pMem->u.i);
}else if( pMem->flags & MEM_Real ){
sqlite3_snprintf(nTemp, zTemp, "%.16g", pMem->r);
+ }else if( pMem->flags & MEM_Null ){
+ sqlite3_snprintf(nTemp, zTemp, "NULL");
}else{
assert( pMem->flags & MEM_Blob );
zP4 = "(blob)";
@@ -56243,6 +60308,10 @@
sqlite3_snprintf(nTemp, zTemp, "program");
break;
}
+ case P4_ADVANCE: {
+ zTemp[0] = 0;
+ break;
+ }
default: {
zP4 = pOp->p4.z;
if( zP4==0 ){
@@ -56259,22 +60328,81 @@
/*
** Declare to the Vdbe that the BTree object at db->aDb[i] is used.
**
-** The prepared statement has to know in advance which Btree objects
-** will be used so that it can acquire mutexes on them all in sorted
-** order (via sqlite3VdbeMutexArrayEnter(). Mutexes are acquired
-** in order (and released in reverse order) to avoid deadlocks.
+** The prepared statements need to know in advance the complete set of
+** attached databases that will be use. A mask of these databases
+** is maintained in p->btreeMask. The p->lockMask value is the subset of
+** p->btreeMask of databases that will require a lock.
*/
SQLITE_PRIVATE void sqlite3VdbeUsesBtree(Vdbe *p, int i){
- int mask;
- assert( i>=0 && i<p->db->nDb && i<sizeof(u32)*8 );
+ assert( i>=0 && i<p->db->nDb && i<(int)sizeof(yDbMask)*8 );
assert( i<(int)sizeof(p->btreeMask)*8 );
- mask = ((u32)1)<<i;
- if( (p->btreeMask & mask)==0 ){
- p->btreeMask |= mask;
- sqlite3BtreeMutexArrayInsert(&p->aMutex, p->db->aDb[i].pBt);
+ p->btreeMask |= ((yDbMask)1)<<i;
+ if( i!=1 && sqlite3BtreeSharable(p->db->aDb[i].pBt) ){
+ p->lockMask |= ((yDbMask)1)<<i;
}
}
+#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0
+/*
+** If SQLite is compiled to support shared-cache mode and to be threadsafe,
+** this routine obtains the mutex associated with each BtShared structure
+** that may be accessed by the VM passed as an argument. In doing so it also
+** sets the BtShared.db member of each of the BtShared structures, ensuring
+** that the correct busy-handler callback is invoked if required.
+**
+** If SQLite is not threadsafe but does support shared-cache mode, then
+** sqlite3BtreeEnter() is invoked to set the BtShared.db variables
+** of all of BtShared structures accessible via the database handle
+** associated with the VM.
+**
+** If SQLite is not threadsafe and does not support shared-cache mode, this
+** function is a no-op.
+**
+** The p->btreeMask field is a bitmask of all btrees that the prepared
+** statement p will ever use. Let N be the number of bits in p->btreeMask
+** corresponding to btrees that use shared cache. Then the runtime of
+** this routine is N*N. But as N is rarely more than 1, this should not
+** be a problem.
+*/
+SQLITE_PRIVATE void sqlite3VdbeEnter(Vdbe *p){
+ int i;
+ yDbMask mask;
+ sqlite3 *db;
+ Db *aDb;
+ int nDb;
+ if( p->lockMask==0 ) return; /* The common case */
+ db = p->db;
+ aDb = db->aDb;
+ nDb = db->nDb;
+ for(i=0, mask=1; i<nDb; i++, mask += mask){
+ if( i!=1 && (mask & p->lockMask)!=0 && ALWAYS(aDb[i].pBt!=0) ){
+ sqlite3BtreeEnter(aDb[i].pBt);
+ }
+ }
+}
+#endif
+
+#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0
+/*
+** Unlock all of the btrees previously locked by a call to sqlite3VdbeEnter().
+*/
+SQLITE_PRIVATE void sqlite3VdbeLeave(Vdbe *p){
+ int i;
+ yDbMask mask;
+ sqlite3 *db;
+ Db *aDb;
+ int nDb;
+ if( p->lockMask==0 ) return; /* The common case */
+ db = p->db;
+ aDb = db->aDb;
+ nDb = db->nDb;
+ for(i=0, mask=1; i<nDb; i++, mask += mask){
+ if( i!=1 && (mask & p->lockMask)!=0 && ALWAYS(aDb[i].pBt!=0) ){
+ sqlite3BtreeLeave(aDb[i].pBt);
+ }
+ }
+}
+#endif
#if defined(VDBE_PROFILE) || defined(SQLITE_DEBUG)
/*
@@ -56334,7 +60462,7 @@
p->zMalloc = 0;
}
- p->flags = MEM_Null;
+ p->flags = MEM_Invalid;
}
db->mallocFailed = malloc_failed;
}
@@ -56381,7 +60509,7 @@
sqlite3 *db = p->db; /* The database connection */
int i; /* Loop counter */
int rc = SQLITE_OK; /* Return code */
- Mem *pMem = p->pResultSet = &p->aMem[1]; /* First Mem of result set */
+ Mem *pMem = &p->aMem[1]; /* First Mem of result set */
assert( p->explain );
assert( p->magic==VDBE_MAGIC_RUN );
@@ -56392,6 +60520,7 @@
** sqlite3_column_text16(), causing a translation to UTF-16 encoding.
*/
releaseMemArray(pMem, 8);
+ p->pResultSet = 0;
if( p->rc==SQLITE_NOMEM ){
/* This happens if a malloc() inside a call to sqlite3_column_text() or
@@ -56546,6 +60675,7 @@
}
p->nResColumn = 8 - 4*(p->explain-1);
+ p->pResultSet = &p->aMem[1];
p->rc = SQLITE_OK;
rc = SQLITE_ROW;
}
@@ -56641,34 +60771,13 @@
}
/*
-** Prepare a virtual machine for execution. This involves things such
-** as allocating stack space and initializing the program counter.
-** After the VDBE has be prepped, it can be executed by one or more
-** calls to sqlite3VdbeExec().
-**
-** This is the only way to move a VDBE from VDBE_MAGIC_INIT to
-** VDBE_MAGIC_RUN.
-**
-** This function may be called more than once on a single virtual machine.
-** The first call is made while compiling the SQL statement. Subsequent
-** calls are made as part of the process of resetting a statement to be
-** re-executed (from a call to sqlite3_reset()). The nVar, nMem, nCursor
-** and isExplain parameters are only passed correct values the first time
-** the function is called. On subsequent calls, from sqlite3_reset(), nVar
-** is passed -1 and nMem, nCursor and isExplain are all passed zero.
+** Rewind the VDBE back to the beginning in preparation for
+** running it.
*/
-SQLITE_PRIVATE void sqlite3VdbeMakeReady(
- Vdbe *p, /* The VDBE */
- int nVar, /* Number of '?' see in the SQL statement */
- int nMem, /* Number of memory cells to allocate */
- int nCursor, /* Number of cursors to allocate */
- int nArg, /* Maximum number of args in SubPrograms */
- int isExplain, /* True if the EXPLAIN keywords is present */
- int usesStmtJournal /* True to set Vdbe.usesStmtJournal */
-){
- int n;
- sqlite3 *db = p->db;
-
+SQLITE_PRIVATE void sqlite3VdbeRewind(Vdbe *p){
+#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE)
+ int i;
+#endif
assert( p!=0 );
assert( p->magic==VDBE_MAGIC_INIT );
@@ -56679,6 +60788,74 @@
/* Set the magic to VDBE_MAGIC_RUN sooner rather than later. */
p->magic = VDBE_MAGIC_RUN;
+#ifdef SQLITE_DEBUG
+ for(i=1; i<p->nMem; i++){
+ assert( p->aMem[i].db==p->db );
+ }
+#endif
+ p->pc = -1;
+ p->rc = SQLITE_OK;
+ p->errorAction = OE_Abort;
+ p->magic = VDBE_MAGIC_RUN;
+ p->nChange = 0;
+ p->cacheCtr = 1;
+ p->minWriteFileFormat = 255;
+ p->iStatement = 0;
+ p->nFkConstraint = 0;
+#ifdef VDBE_PROFILE
+ for(i=0; i<p->nOp; i++){
+ p->aOp[i].cnt = 0;
+ p->aOp[i].cycles = 0;
+ }
+#endif
+}
+
+/*
+** Prepare a virtual machine for execution for the first time after
+** creating the virtual machine. This involves things such
+** as allocating stack space and initializing the program counter.
+** After the VDBE has be prepped, it can be executed by one or more
+** calls to sqlite3VdbeExec().
+**
+** This function may be called exact once on a each virtual machine.
+** After this routine is called the VM has been "packaged" and is ready
+** to run. After this routine is called, futher calls to
+** sqlite3VdbeAddOp() functions are prohibited. This routine disconnects
+** the Vdbe from the Parse object that helped generate it so that the
+** the Vdbe becomes an independent entity and the Parse object can be
+** destroyed.
+**
+** Use the sqlite3VdbeRewind() procedure to restore a virtual machine back
+** to its initial state after it has been run.
+*/
+SQLITE_PRIVATE void sqlite3VdbeMakeReady(
+ Vdbe *p, /* The VDBE */
+ Parse *pParse /* Parsing context */
+){
+ sqlite3 *db; /* The database connection */
+ int nVar; /* Number of parameters */
+ int nMem; /* Number of VM memory registers */
+ int nCursor; /* Number of cursors required */
+ int nArg; /* Number of arguments in subprograms */
+ int nOnce; /* Number of OP_Once instructions */
+ int n; /* Loop counter */
+ u8 *zCsr; /* Memory available for allocation */
+ u8 *zEnd; /* First byte past allocated memory */
+ int nByte; /* How much extra memory is needed */
+
+ assert( p!=0 );
+ assert( p->nOp>0 );
+ assert( pParse!=0 );
+ assert( p->magic==VDBE_MAGIC_INIT );
+ db = p->db;
+ assert( db->mallocFailed==0 );
+ nVar = pParse->nVar;
+ nMem = pParse->nMem;
+ nCursor = pParse->nTab;
+ nArg = pParse->nMaxArg;
+ nOnce = pParse->nOnce;
+ if( nOnce==0 ) nOnce = 1; /* Ensure at least one byte in p->aOnceFlag[] */
+
/* For each cursor required, also allocate a memory cell. Memory
** cells (nMem+1-nCursor)..nMem, inclusive, will never be used by
** the vdbe program. Instead they are used to allocate space for
@@ -56691,91 +60868,71 @@
nMem += nCursor;
/* Allocate space for memory registers, SQL variables, VDBE cursors and
- ** an array to marshal SQL function arguments in. This is only done the
- ** first time this function is called for a given VDBE, not when it is
- ** being called from sqlite3_reset() to reset the virtual machine.
+ ** an array to marshal SQL function arguments in.
*/
- if( nVar>=0 && ALWAYS(db->mallocFailed==0) ){
- u8 *zCsr = (u8 *)&p->aOp[p->nOp]; /* Memory avaliable for alloation */
- u8 *zEnd = (u8 *)&p->aOp[p->nOpAlloc]; /* First byte past available mem */
- int nByte; /* How much extra memory needed */
+ zCsr = (u8*)&p->aOp[p->nOp]; /* Memory avaliable for allocation */
+ zEnd = (u8*)&p->aOp[p->nOpAlloc]; /* First byte past end of zCsr[] */
- resolveP2Values(p, &nArg);
- p->usesStmtJournal = (u8)usesStmtJournal;
- if( isExplain && nMem<10 ){
- nMem = 10;
+ resolveP2Values(p, &nArg);
+ p->usesStmtJournal = (u8)(pParse->isMultiWrite && pParse->mayAbort);
+ if( pParse->explain && nMem<10 ){
+ nMem = 10;
+ }
+ memset(zCsr, 0, zEnd-zCsr);
+ zCsr += (zCsr - (u8*)0)&7;
+ assert( EIGHT_BYTE_ALIGNMENT(zCsr) );
+ p->expired = 0;
+
+ /* Memory for registers, parameters, cursor, etc, is allocated in two
+ ** passes. On the first pass, we try to reuse unused space at the
+ ** end of the opcode array. If we are unable to satisfy all memory
+ ** requirements by reusing the opcode array tail, then the second
+ ** pass will fill in the rest using a fresh allocation.
+ **
+ ** This two-pass approach that reuses as much memory as possible from
+ ** the leftover space at the end of the opcode array can significantly
+ ** reduce the amount of memory held by a prepared statement.
+ */
+ do {
+ nByte = 0;
+ p->aMem = allocSpace(p->aMem, nMem*sizeof(Mem), &zCsr, zEnd, &nByte);
+ p->aVar = allocSpace(p->aVar, nVar*sizeof(Mem), &zCsr, zEnd, &nByte);
+ p->apArg = allocSpace(p->apArg, nArg*sizeof(Mem*), &zCsr, zEnd, &nByte);
+ p->azVar = allocSpace(p->azVar, nVar*sizeof(char*), &zCsr, zEnd, &nByte);
+ p->apCsr = allocSpace(p->apCsr, nCursor*sizeof(VdbeCursor*),
+ &zCsr, zEnd, &nByte);
+ p->aOnceFlag = allocSpace(p->aOnceFlag, nOnce, &zCsr, zEnd, &nByte);
+ if( nByte ){
+ p->pFree = sqlite3DbMallocZero(db, nByte);
}
- memset(zCsr, 0, zEnd-zCsr);
- zCsr += (zCsr - (u8*)0)&7;
- assert( EIGHT_BYTE_ALIGNMENT(zCsr) );
+ zCsr = p->pFree;
+ zEnd = &zCsr[nByte];
+ }while( nByte && !db->mallocFailed );
- /* Memory for registers, parameters, cursor, etc, is allocated in two
- ** passes. On the first pass, we try to reuse unused space at the
- ** end of the opcode array. If we are unable to satisfy all memory
- ** requirements by reusing the opcode array tail, then the second
- ** pass will fill in the rest using a fresh allocation.
- **
- ** This two-pass approach that reuses as much memory as possible from
- ** the leftover space at the end of the opcode array can significantly
- ** reduce the amount of memory held by a prepared statement.
- */
- do {
- nByte = 0;
- p->aMem = allocSpace(p->aMem, nMem*sizeof(Mem), &zCsr, zEnd, &nByte);
- p->aVar = allocSpace(p->aVar, nVar*sizeof(Mem), &zCsr, zEnd, &nByte);
- p->apArg = allocSpace(p->apArg, nArg*sizeof(Mem*), &zCsr, zEnd, &nByte);
- p->azVar = allocSpace(p->azVar, nVar*sizeof(char*), &zCsr, zEnd, &nByte);
- p->apCsr = allocSpace(p->apCsr, nCursor*sizeof(VdbeCursor*),
- &zCsr, zEnd, &nByte);
- if( nByte ){
- p->pFree = sqlite3DbMallocZero(db, nByte);
- }
- zCsr = p->pFree;
- zEnd = &zCsr[nByte];
- }while( nByte && !db->mallocFailed );
-
- p->nCursor = (u16)nCursor;
- if( p->aVar ){
- p->nVar = (ynVar)nVar;
- for(n=0; n<nVar; n++){
- p->aVar[n].flags = MEM_Null;
- p->aVar[n].db = db;
- }
- }
- if( p->aMem ){
- p->aMem--; /* aMem[] goes from 1..nMem */
- p->nMem = nMem; /* not from 0..nMem-1 */
- for(n=1; n<=nMem; n++){
- p->aMem[n].flags = MEM_Null;
- p->aMem[n].db = db;
- }
+ p->nCursor = (u16)nCursor;
+ p->nOnceFlag = nOnce;
+ if( p->aVar ){
+ p->nVar = (ynVar)nVar;
+ for(n=0; n<nVar; n++){
+ p->aVar[n].flags = MEM_Null;
+ p->aVar[n].db = db;
}
}
-#ifdef SQLITE_DEBUG
- for(n=1; n<p->nMem; n++){
- assert( p->aMem[n].db==db );
+ if( p->azVar ){
+ p->nzVar = pParse->nzVar;
+ memcpy(p->azVar, pParse->azVar, p->nzVar*sizeof(p->azVar[0]));
+ memset(pParse->azVar, 0, pParse->nzVar*sizeof(pParse->azVar[0]));
}
-#endif
-
- p->pc = -1;
- p->rc = SQLITE_OK;
- p->errorAction = OE_Abort;
- p->explain |= isExplain;
- p->magic = VDBE_MAGIC_RUN;
- p->nChange = 0;
- p->cacheCtr = 1;
- p->minWriteFileFormat = 255;
- p->iStatement = 0;
- p->nFkConstraint = 0;
-#ifdef VDBE_PROFILE
- {
- int i;
- for(i=0; i<p->nOp; i++){
- p->aOp[i].cnt = 0;
- p->aOp[i].cycles = 0;
+ if( p->aMem ){
+ p->aMem--; /* aMem[] goes from 1..nMem */
+ p->nMem = nMem; /* not from 0..nMem-1 */
+ for(n=1; n<=nMem; n++){
+ p->aMem[n].flags = MEM_Invalid;
+ p->aMem[n].db = db;
}
}
-#endif
+ p->explain = pParse->explain;
+ sqlite3VdbeRewind(p);
}
/*
@@ -56786,6 +60943,7 @@
if( pCx==0 ){
return;
}
+ sqlite3VdbeSorterClose(p->db, pCx);
if( pCx->pBt ){
sqlite3BtreeClose(pCx->pBt);
/* The pCx->pCursor will be close automatically, if it exists, by
@@ -56811,6 +60969,8 @@
*/
SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *pFrame){
Vdbe *v = pFrame->v;
+ v->aOnceFlag = pFrame->aOnceFlag;
+ v->nOnceFlag = pFrame->nOnceFlag;
v->aOp = pFrame->aOp;
v->nOp = pFrame->nOp;
v->aMem = pFrame->aMem;
@@ -56832,7 +60992,7 @@
*/
static void closeAllCursors(Vdbe *p){
if( p->pFrame ){
- VdbeFrame *pFrame = p->pFrame;
+ VdbeFrame *pFrame;
for(pFrame=p->pFrame; pFrame->pParent; pFrame=pFrame->pParent);
sqlite3VdbeFrameRestore(pFrame);
}
@@ -56873,8 +61033,10 @@
/* Execute assert() statements to ensure that the Vdbe.apCsr[] and
** Vdbe.aMem[] arrays have already been cleaned up. */
int i;
- for(i=0; i<p->nCursor; i++) assert( p->apCsr==0 || p->apCsr[i]==0 );
- for(i=1; i<=p->nMem; i++) assert( p->aMem==0 || p->aMem[i].flags==MEM_Null );
+ if( p->apCsr ) for(i=0; i<p->nCursor; i++) assert( p->apCsr[i]==0 );
+ if( p->aMem ){
+ for(i=1; i<=p->nMem; i++) assert( p->aMem[i].flags==MEM_Invalid );
+ }
#endif
sqlite3DbFree(db, p->zErrMsg);
@@ -57018,7 +61180,7 @@
for(i=0; rc==SQLITE_OK && i<db->nDb; i++){
Btree *pBt = db->aDb[i].pBt;
if( pBt ){
- rc = sqlite3BtreeCommitPhaseTwo(pBt);
+ rc = sqlite3BtreeCommitPhaseTwo(pBt, 0);
}
}
if( rc==SQLITE_OK ){
@@ -57039,16 +61201,32 @@
sqlite3_file *pMaster = 0;
i64 offset = 0;
int res;
+ int retryCount = 0;
+ int nMainFile;
/* Select a master journal file name */
+ nMainFile = sqlite3Strlen30(zMainFile);
+ zMaster = sqlite3MPrintf(db, "%s-mjXXXXXX9XXz", zMainFile);
+ if( zMaster==0 ) return SQLITE_NOMEM;
do {
u32 iRandom;
- sqlite3DbFree(db, zMaster);
- sqlite3_randomness(sizeof(iRandom), &iRandom);
- zMaster = sqlite3MPrintf(db, "%s-mj%08X", zMainFile, iRandom&0x7fffffff);
- if( !zMaster ){
- return SQLITE_NOMEM;
+ if( retryCount ){
+ if( retryCount>100 ){
+ sqlite3_log(SQLITE_FULL, "MJ delete: %s", zMaster);
+ sqlite3OsDelete(pVfs, zMaster, 0);
+ break;
+ }else if( retryCount==1 ){
+ sqlite3_log(SQLITE_FULL, "MJ collide: %s", zMaster);
+ }
}
+ retryCount++;
+ sqlite3_randomness(sizeof(iRandom), &iRandom);
+ sqlite3_snprintf(13, &zMaster[nMainFile], "-mj%06X9%02X",
+ (iRandom>>8)&0xffffff, iRandom&0xff);
+ /* The antipenultimate character of the master journal name must
+ ** be "9" to avoid name collisions when using 8+3 filenames. */
+ assert( zMaster[sqlite3Strlen30(zMaster)-3]=='9' );
+ sqlite3FileSuffix3(zMainFile, zMaster);
rc = sqlite3OsAccess(pVfs, zMaster, SQLITE_ACCESS_EXISTS, &res);
}while( rc==SQLITE_OK && res );
if( rc==SQLITE_OK ){
@@ -57150,7 +61328,7 @@
for(i=0; i<db->nDb; i++){
Btree *pBt = db->aDb[i].pBt;
if( pBt ){
- sqlite3BtreeCommitPhaseTwo(pBt);
+ sqlite3BtreeCommitPhaseTwo(pBt, 1);
}
}
sqlite3EndBenignMalloc();
@@ -57263,6 +61441,15 @@
db->nStatement--;
p->iStatement = 0;
+ if( rc==SQLITE_OK ){
+ if( eOp==SAVEPOINT_ROLLBACK ){
+ rc = sqlite3VtabSavepoint(db, SAVEPOINT_ROLLBACK, iSavepoint);
+ }
+ if( rc==SQLITE_OK ){
+ rc = sqlite3VtabSavepoint(db, SAVEPOINT_RELEASE, iSavepoint);
+ }
+ }
+
/* If the statement transaction is being rolled back, also restore the
** database handles deferred constraint counter to the value it had when
** the statement transaction was opened. */
@@ -57274,33 +61461,6 @@
}
/*
-** If SQLite is compiled to support shared-cache mode and to be threadsafe,
-** this routine obtains the mutex associated with each BtShared structure
-** that may be accessed by the VM passed as an argument. In doing so it
-** sets the BtShared.db member of each of the BtShared structures, ensuring
-** that the correct busy-handler callback is invoked if required.
-**
-** If SQLite is not threadsafe but does support shared-cache mode, then
-** sqlite3BtreeEnterAll() is invoked to set the BtShared.db variables
-** of all of BtShared structures accessible via the database handle
-** associated with the VM. Of course only a subset of these structures
-** will be accessed by the VM, and we could use Vdbe.btreeMask to figure
-** that subset out, but there is no advantage to doing so.
-**
-** If SQLite is not threadsafe and does not support shared-cache mode, this
-** function is a no-op.
-*/
-#ifndef SQLITE_OMIT_SHARED_CACHE
-SQLITE_PRIVATE void sqlite3VdbeMutexArrayEnter(Vdbe *p){
-#if SQLITE_THREADSAFE
- sqlite3BtreeMutexArrayEnter(&p->aMutex);
-#else
- sqlite3BtreeEnterAll(p->db);
-#endif
-}
-#endif
-
-/*
** This function is called when a transaction opened by the database
** handle associated with the VM passed as an argument is about to be
** committed. If there are outstanding deferred foreign key constraint
@@ -57359,6 +61519,7 @@
if( p->db->mallocFailed ){
p->rc = SQLITE_NOMEM;
}
+ if( p->aOnceFlag ) memset(p->aOnceFlag, 0, p->nOnceFlag);
closeAllCursors(p);
if( p->magic!=VDBE_MAGIC_RUN ){
return SQLITE_OK;
@@ -57372,7 +61533,7 @@
int isSpecialError; /* Set to true if a 'special' error */
/* Lock all btrees used by the statement */
- sqlite3VdbeMutexArrayEnter(p);
+ sqlite3VdbeEnter(p);
/* Check for one of the special errors */
mrc = p->rc & 0xff;
@@ -57423,17 +61584,22 @@
&& db->writeVdbeCnt==(p->readOnly==0)
){
if( p->rc==SQLITE_OK || (p->errorAction==OE_Fail && !isSpecialError) ){
- if( sqlite3VdbeCheckFk(p, 1) ){
- sqlite3BtreeMutexArrayLeave(&p->aMutex);
- return SQLITE_ERROR;
+ rc = sqlite3VdbeCheckFk(p, 1);
+ if( rc!=SQLITE_OK ){
+ if( NEVER(p->readOnly) ){
+ sqlite3VdbeLeave(p);
+ return SQLITE_ERROR;
+ }
+ rc = SQLITE_CONSTRAINT;
+ }else{
+ /* The auto-commit flag is true, the vdbe program was successful
+ ** or hit an 'OR FAIL' constraint and there are no deferred foreign
+ ** key constraints to hold up the transaction. This means a commit
+ ** is required. */
+ rc = vdbeCommit(db, p);
}
- /* The auto-commit flag is true, the vdbe program was successful
- ** or hit an 'OR FAIL' constraint and there are no deferred foreign
- ** key constraints to hold up the transaction. This means a commit
- ** is required. */
- rc = vdbeCommit(db, p);
- if( rc==SQLITE_BUSY ){
- sqlite3BtreeMutexArrayLeave(&p->aMutex);
+ if( rc==SQLITE_BUSY && p->readOnly ){
+ sqlite3VdbeLeave(p);
return SQLITE_BUSY;
}else if( rc!=SQLITE_OK ){
p->rc = rc;
@@ -57464,17 +61630,11 @@
** do so. If this operation returns an error, and the current statement
** error code is SQLITE_OK or SQLITE_CONSTRAINT, then promote the
** current statement error code.
- **
- ** Note that sqlite3VdbeCloseStatement() can only fail if eStatementOp
- ** is SAVEPOINT_ROLLBACK. But if p->rc==SQLITE_OK then eStatementOp
- ** must be SAVEPOINT_RELEASE. Hence the NEVER(p->rc==SQLITE_OK) in
- ** the following code.
*/
if( eStatementOp ){
rc = sqlite3VdbeCloseStatement(p, eStatementOp);
if( rc ){
- assert( eStatementOp==SAVEPOINT_ROLLBACK );
- if( NEVER(p->rc==SQLITE_OK) || p->rc==SQLITE_CONSTRAINT ){
+ if( p->rc==SQLITE_OK || p->rc==SQLITE_CONSTRAINT ){
p->rc = rc;
sqlite3DbFree(db, p->zErrMsg);
p->zErrMsg = 0;
@@ -57500,12 +61660,12 @@
/* Rollback or commit any schema changes that occurred. */
if( p->rc!=SQLITE_OK && db->flags&SQLITE_InternChanges ){
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
db->flags = (db->flags | SQLITE_InternChanges);
}
/* Release the locks */
- sqlite3BtreeMutexArrayLeave(&p->aMutex);
+ sqlite3VdbeLeave(p);
}
/* We have successfully halted and closed the VM. Record this fact. */
@@ -57531,7 +61691,7 @@
}
assert( db->activeVdbeCnt>0 || db->autoCommit==0 || db->nStatement==0 );
- return SQLITE_OK;
+ return (p->rc==SQLITE_BUSY ? SQLITE_BUSY : SQLITE_OK);
}
@@ -57544,6 +61704,30 @@
}
/*
+** Copy the error code and error message belonging to the VDBE passed
+** as the first argument to its database handle (so that they will be
+** returned by calls to sqlite3_errcode() and sqlite3_errmsg()).
+**
+** This function does not clear the VDBE error code or message, just
+** copies them to the database handle.
+*/
+SQLITE_PRIVATE int sqlite3VdbeTransferError(Vdbe *p){
+ sqlite3 *db = p->db;
+ int rc = p->rc;
+ if( p->zErrMsg ){
+ u8 mallocFailed = db->mallocFailed;
+ sqlite3BeginBenignMalloc();
+ sqlite3ValueSetStr(db->pErr, -1, p->zErrMsg, SQLITE_UTF8, SQLITE_TRANSIENT);
+ sqlite3EndBenignMalloc();
+ db->mallocFailed = mallocFailed;
+ db->errCode = rc;
+ }else{
+ sqlite3Error(db, rc, 0);
+ }
+ return rc;
+}
+
+/*
** Clean up a VDBE after execution but do not delete the VDBE just yet.
** Write any error messages into *pzErrMsg. Return the result code.
**
@@ -57570,18 +61754,9 @@
** instructions yet, leave the main database error information unchanged.
*/
if( p->pc>=0 ){
- if( p->zErrMsg ){
- sqlite3BeginBenignMalloc();
- sqlite3ValueSetStr(db->pErr,-1,p->zErrMsg,SQLITE_UTF8,SQLITE_TRANSIENT);
- sqlite3EndBenignMalloc();
- db->errCode = p->rc;
- sqlite3DbFree(db, p->zErrMsg);
- p->zErrMsg = 0;
- }else if( p->rc ){
- sqlite3Error(db, p->rc, 0);
- }else{
- sqlite3Error(db, SQLITE_OK, 0);
- }
+ sqlite3VdbeTransferError(p);
+ sqlite3DbFree(db, p->zErrMsg);
+ p->zErrMsg = 0;
if( p->runOnlyOnce ) p->expired = 1;
}else if( p->rc && p->expired ){
/* The expired flag was set on the VDBE before the first call
@@ -57667,6 +61842,7 @@
*/
SQLITE_PRIVATE void sqlite3VdbeDeleteObject(sqlite3 *db, Vdbe *p){
SubProgram *pSub, *pNext;
+ int i;
assert( p->db==0 || p->db==db );
releaseMemArray(p->aVar, p->nVar);
releaseMemArray(p->aColName, p->nResColumn*COLNAME_N);
@@ -57675,11 +61851,16 @@
vdbeFreeOpArray(db, pSub->aOp, pSub->nOp);
sqlite3DbFree(db, pSub);
}
+ for(i=p->nzVar-1; i>=0; i--) sqlite3DbFree(db, p->azVar[i]);
vdbeFreeOpArray(db, p->aOp, p->nOp);
sqlite3DbFree(db, p->aLabel);
sqlite3DbFree(db, p->aColName);
sqlite3DbFree(db, p->zSql);
sqlite3DbFree(db, p->pFree);
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
+ sqlite3DbFree(db, p->zExplain);
+ sqlite3DbFree(db, p->pExplain);
+#endif
sqlite3DbFree(db, p);
}
@@ -57807,7 +61988,13 @@
if( file_format>=4 && (i&1)==i ){
return 8+(u32)i;
}
- u = i<0 ? -i : i;
+ if( i<0 ){
+ if( i<(-MAX_6BYTE) ) return 6;
+ /* Previous test prevents: u = -(-9223372036854775808) */
+ u = -i;
+ }else{
+ u = i;
+ }
if( u<=127 ) return 1;
if( u<=32767 ) return 2;
if( u<=8388607 ) return 3;
@@ -58053,57 +62240,70 @@
return 0;
}
-
/*
-** Given the nKey-byte encoding of a record in pKey[], parse the
-** record into a UnpackedRecord structure. Return a pointer to
-** that structure.
+** This routine is used to allocate sufficient space for an UnpackedRecord
+** structure large enough to be used with sqlite3VdbeRecordUnpack() if
+** the first argument is a pointer to KeyInfo structure pKeyInfo.
**
-** The calling function might provide szSpace bytes of memory
-** space at pSpace. This space can be used to hold the returned
-** VDbeParsedRecord structure if it is large enough. If it is
-** not big enough, space is obtained from sqlite3_malloc().
+** The space is either allocated using sqlite3DbMallocRaw() or from within
+** the unaligned buffer passed via the second and third arguments (presumably
+** stack space). If the former, then *ppFree is set to a pointer that should
+** be eventually freed by the caller using sqlite3DbFree(). Or, if the
+** allocation comes from the pSpace/szSpace buffer, *ppFree is set to NULL
+** before returning.
**
-** The returned structure should be closed by a call to
-** sqlite3VdbeDeleteUnpackedRecord().
-*/
-SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeRecordUnpack(
- KeyInfo *pKeyInfo, /* Information about the record format */
- int nKey, /* Size of the binary record */
- const void *pKey, /* The binary record */
- char *pSpace, /* Unaligned space available to hold the object */
- int szSpace /* Size of pSpace[] in bytes */
+** If an OOM error occurs, NULL is returned.
+*/
+SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeAllocUnpackedRecord(
+ KeyInfo *pKeyInfo, /* Description of the record */
+ char *pSpace, /* Unaligned space available */
+ int szSpace, /* Size of pSpace[] in bytes */
+ char **ppFree /* OUT: Caller should free this pointer */
){
- const unsigned char *aKey = (const unsigned char *)pKey;
- UnpackedRecord *p; /* The unpacked record that we will return */
- int nByte; /* Memory space needed to hold p, in bytes */
- int d;
- u32 idx;
- u16 u; /* Unsigned loop counter */
- u32 szHdr;
- Mem *pMem;
- int nOff; /* Increase pSpace by this much to 8-byte align it */
-
- /*
- ** We want to shift the pointer pSpace up such that it is 8-byte aligned.
+ UnpackedRecord *p; /* Unpacked record to return */
+ int nOff; /* Increment pSpace by nOff to align it */
+ int nByte; /* Number of bytes required for *p */
+
+ /* We want to shift the pointer pSpace up such that it is 8-byte aligned.
** Thus, we need to calculate a value, nOff, between 0 and 7, to shift
** it by. If pSpace is already 8-byte aligned, nOff should be zero.
*/
nOff = (8 - (SQLITE_PTR_TO_INT(pSpace) & 7)) & 7;
- pSpace += nOff;
- szSpace -= nOff;
nByte = ROUND8(sizeof(UnpackedRecord)) + sizeof(Mem)*(pKeyInfo->nField+1);
- if( nByte>szSpace ){
- p = sqlite3DbMallocRaw(pKeyInfo->db, nByte);
- if( p==0 ) return 0;
- p->flags = UNPACKED_NEED_FREE | UNPACKED_NEED_DESTROY;
+ if( nByte>szSpace+nOff ){
+ p = (UnpackedRecord *)sqlite3DbMallocRaw(pKeyInfo->db, nByte);
+ *ppFree = (char *)p;
+ if( !p ) return 0;
}else{
- p = (UnpackedRecord*)pSpace;
- p->flags = UNPACKED_NEED_DESTROY;
+ p = (UnpackedRecord*)&pSpace[nOff];
+ *ppFree = 0;
}
+
+ p->aMem = (Mem*)&((char*)p)[ROUND8(sizeof(UnpackedRecord))];
p->pKeyInfo = pKeyInfo;
p->nField = pKeyInfo->nField + 1;
- p->aMem = pMem = (Mem*)&((char*)p)[ROUND8(sizeof(UnpackedRecord))];
+ return p;
+}
+
+/*
+** Given the nKey-byte encoding of a record in pKey[], populate the
+** UnpackedRecord structure indicated by the fourth argument with the
+** contents of the decoded record.
+*/
+SQLITE_PRIVATE void sqlite3VdbeRecordUnpack(
+ KeyInfo *pKeyInfo, /* Information about the record format */
+ int nKey, /* Size of the binary record */
+ const void *pKey, /* The binary record */
+ UnpackedRecord *p /* Populate this structure before returning. */
+){
+ const unsigned char *aKey = (const unsigned char *)pKey;
+ int d;
+ u32 idx; /* Offset in aKey[] to read from */
+ u16 u; /* Unsigned loop counter */
+ u32 szHdr;
+ Mem *pMem = p->aMem;
+
+ p->flags = 0;
assert( EIGHT_BYTE_ALIGNMENT(pMem) );
idx = getVarint32(aKey, szHdr);
d = szHdr;
@@ -58114,7 +62314,7 @@
idx += getVarint32(&aKey[idx], serial_type);
pMem->enc = pKeyInfo->enc;
pMem->db = pKeyInfo->db;
- pMem->flags = 0;
+ /* pMem->flags = 0; // sqlite3VdbeSerialGet() will set this for us */
pMem->zMalloc = 0;
d += sqlite3VdbeSerialGet(&aKey[d], serial_type, pMem);
pMem++;
@@ -58122,29 +62322,6 @@
}
assert( u<=pKeyInfo->nField + 1 );
p->nField = u;
- return (void*)p;
-}
-
-/*
-** This routine destroys a UnpackedRecord object.
-*/
-SQLITE_PRIVATE void sqlite3VdbeDeleteUnpackedRecord(UnpackedRecord *p){
- int i;
- Mem *pMem;
-
- assert( p!=0 );
- assert( p->flags & UNPACKED_NEED_DESTROY );
- for(i=0, pMem=p->aMem; i<p->nField; i++, pMem++){
- /* The unpacked record is always constructed by the
- ** sqlite3VdbeUnpackRecord() function above, which makes all
- ** strings and blobs static. And none of the elements are
- ** ever transformed, so there is never anything to delete.
- */
- if( NEVER(pMem->zMalloc) ) sqlite3VdbeMemRelease(pMem);
- }
- if( p->flags & UNPACKED_NEED_FREE ){
- sqlite3DbFree(p->pKeyInfo->db, p);
- }
}
/*
@@ -58163,15 +62340,6 @@
** Or if the UNPACKED_MATCH_PREFIX flag is set and the prefixes are
** equal, then the keys are considered to be equal and
** the parts beyond the common prefix are ignored.
-**
-** If the UNPACKED_IGNORE_ROWID flag is set, then the last byte of
-** the header of pKey1 is ignored. It is assumed that pKey1 is
-** an index key, and thus ends with a rowid value. The last byte
-** of the header will therefore be the serial type of the rowid:
-** one of 1, 2, 3, 4, 5, 6, 8, or 9 - the integer serial types.
-** The serial type of the final rowid will always be a single byte.
-** By ignoring this last byte of the header, we force the comparison
-** to ignore the rowid at the end of key1.
*/
SQLITE_PRIVATE int sqlite3VdbeRecordCompare(
int nKey1, const void *pKey1, /* Left key */
@@ -58195,7 +62363,7 @@
/* Compilers may complain that mem1.u.i is potentially uninitialized.
** We could initialize it, as shown here, to silence those complaints.
- ** But in fact, mem1.u.i will never actually be used initialized, and doing
+ ** But in fact, mem1.u.i will never actually be used uninitialized, and doing
** the unnecessary initialization has a measurable negative performance
** impact, since this routine is a very high runner. And so, we choose
** to ignore the compiler warnings and leave this variable uninitialized.
@@ -58204,9 +62372,6 @@
idx1 = getVarint32(aKey1, szHdr1);
d1 = szHdr1;
- if( pPKey2->flags & UNPACKED_IGNORE_ROWID ){
- szHdr1--;
- }
nField = pKeyInfo->nField;
while( idx1<szHdr1 && i<pPKey2->nField ){
u32 serial_type1;
@@ -58298,7 +62463,7 @@
** this code can safely assume that nCellKey is 32-bits
*/
assert( sqlite3BtreeCursorIsValid(pCur) );
- rc = sqlite3BtreeKeySize(pCur, &nCellKey);
+ VVA_ONLY(rc =) sqlite3BtreeKeySize(pCur, &nCellKey);
assert( rc==SQLITE_OK ); /* pCur is always valid so KeySize cannot fail */
assert( (nCellKey & SQLITE_MAX_U32)==(u64)nCellKey );
@@ -58373,7 +62538,7 @@
Mem m;
assert( sqlite3BtreeCursorIsValid(pCur) );
- rc = sqlite3BtreeKeySize(pCur, &nCellKey);
+ VVA_ONLY(rc =) sqlite3BtreeKeySize(pCur, &nCellKey);
assert( rc==SQLITE_OK ); /* pCur is always valid so KeySize cannot fail */
/* nCellKey will always be between 0 and 0xffffffff because of the say
** that btreeParseCellPtr() and sqlite3GetVarint32() are implemented */
@@ -58386,7 +62551,7 @@
if( rc ){
return rc;
}
- assert( pUnpacked->flags & UNPACKED_IGNORE_ROWID );
+ assert( pUnpacked->flags & UNPACKED_PREFIX_MATCH );
*res = sqlite3VdbeRecordCompare(m.n, m.z, pUnpacked);
sqlite3VdbeMemRelease(&m);
return SQLITE_OK;
@@ -58577,7 +62742,7 @@
Vdbe *v = (Vdbe*)pStmt;
sqlite3_mutex_enter(v->db->mutex);
rc = sqlite3VdbeReset(v);
- sqlite3VdbeMakeReady(v, -1, 0, 0, 0, 0, 0);
+ sqlite3VdbeRewind(v);
assert( (rc & (v->db->errMask))==rc );
rc = sqlite3ApiExit(v->db, rc);
sqlite3_mutex_leave(v->db->mutex);
@@ -58820,11 +62985,30 @@
assert(p);
if( p->magic!=VDBE_MAGIC_RUN ){
/* We used to require that sqlite3_reset() be called before retrying
- ** sqlite3_step() after any error. But after 3.6.23, we changed this
- ** so that sqlite3_reset() would be called automatically instead of
- ** throwing the error.
+ ** sqlite3_step() after any error or after SQLITE_DONE. But beginning
+ ** with version 3.7.0, we changed this so that sqlite3_reset() would
+ ** be called automatically instead of throwing the SQLITE_MISUSE error.
+ ** This "automatic-reset" change is not technically an incompatibility,
+ ** since any application that receives an SQLITE_MISUSE is broken by
+ ** definition.
+ **
+ ** Nevertheless, some published applications that were originally written
+ ** for version 3.6.23 or earlier do in fact depend on SQLITE_MISUSE
+ ** returns, and those were broken by the automatic-reset change. As a
+ ** a work-around, the SQLITE_OMIT_AUTORESET compile-time restores the
+ ** legacy behavior of returning SQLITE_MISUSE for cases where the
+ ** previous sqlite3_step() returned something other than a SQLITE_LOCKED
+ ** or SQLITE_BUSY error.
*/
+#ifdef SQLITE_OMIT_AUTORESET
+ if( p->rc==SQLITE_BUSY || p->rc==SQLITE_LOCKED ){
+ sqlite3_reset((sqlite3_stmt*)p);
+ }else{
+ return SQLITE_MISUSE_BKPT;
+ }
+#else
sqlite3_reset((sqlite3_stmt*)p);
+#endif
}
/* Check that malloc() has not failed. If it has, return early. */
@@ -58866,7 +63050,9 @@
}else
#endif /* SQLITE_OMIT_EXPLAIN */
{
+ db->vdbeExecCnt++;
rc = sqlite3VdbeExec(p);
+ db->vdbeExecCnt--;
}
#ifndef SQLITE_OMIT_TRACE
@@ -58908,12 +63094,20 @@
** error has occured, then return the error code in p->rc to the
** caller. Set the error code in the database handle to the same value.
*/
- rc = db->errCode = p->rc;
+ rc = sqlite3VdbeTransferError(p);
}
return (rc&db->errMask);
}
/*
+** The maximum number of times that a statement will try to reparse
+** itself before giving up and returning SQLITE_SCHEMA.
+*/
+#ifndef SQLITE_MAX_SCHEMA_RETRY
+# define SQLITE_MAX_SCHEMA_RETRY 5
+#endif
+
+/*
** This is the top-level implementation of sqlite3_step(). Call
** sqlite3Step() to do most of the work. If a schema error occurs,
** call sqlite3Reprepare() and try again.
@@ -58931,10 +63125,10 @@
db = v->db;
sqlite3_mutex_enter(db->mutex);
while( (rc = sqlite3Step(v))==SQLITE_SCHEMA
- && cnt++ < 5
+ && cnt++ < SQLITE_MAX_SCHEMA_RETRY
&& (rc2 = rc = sqlite3Reprepare(v))==SQLITE_OK ){
sqlite3_reset(pStmt);
- v->expired = 0;
+ assert( v->expired==0 );
}
if( rc2!=SQLITE_OK && ALWAYS(v->isPrepareV2) && ALWAYS(db->pErr) ){
/* This case occurs after failing to recompile an sql statement.
@@ -59136,31 +63330,33 @@
*/
static Mem *columnMem(sqlite3_stmt *pStmt, int i){
Vdbe *pVm;
- int vals;
Mem *pOut;
pVm = (Vdbe *)pStmt;
if( pVm && pVm->pResultSet!=0 && i<pVm->nResColumn && i>=0 ){
sqlite3_mutex_enter(pVm->db->mutex);
- vals = sqlite3_data_count(pStmt);
pOut = &pVm->pResultSet[i];
}else{
/* If the value passed as the second argument is out of range, return
** a pointer to the following static Mem object which contains the
** value SQL NULL. Even though the Mem structure contains an element
- ** of type i64, on certain architecture (x86) with certain compiler
+ ** of type i64, on certain architectures (x86) with certain compiler
** switches (-Os), gcc may align this Mem object on a 4-byte boundary
** instead of an 8-byte one. This all works fine, except that when
** running with SQLITE_DEBUG defined the SQLite code sometimes assert()s
** that a Mem structure is located on an 8-byte boundary. To prevent
- ** this assert() from failing, when building with SQLITE_DEBUG defined
- ** using gcc, force nullMem to be 8-byte aligned using the magical
+ ** these assert()s from failing, when building with SQLITE_DEBUG defined
+ ** using gcc, we force nullMem to be 8-byte aligned using the magical
** __attribute__((aligned(8))) macro. */
static const Mem nullMem
#if defined(SQLITE_DEBUG) && defined(__GNUC__)
__attribute__((aligned(8)))
#endif
- = {{0}, (double)0, 0, "", 0, MEM_Null, SQLITE_NULL, 0, 0, 0 };
+ = {0, "", (double)0, {0}, 0, MEM_Null, SQLITE_NULL, 0,
+#ifdef SQLITE_DEBUG
+ 0, 0, /* pScopyFrom, pFiller */
+#endif
+ 0, 0 };
if( pVm && ALWAYS(pVm->db) ){
sqlite3_mutex_enter(pVm->db->mutex);
@@ -59620,32 +63816,6 @@
}
/*
-** Create a mapping from variable numbers to variable names
-** in the Vdbe.azVar[] array, if such a mapping does not already
-** exist.
-*/
-static void createVarMap(Vdbe *p){
- if( !p->okVar ){
- int j;
- Op *pOp;
- sqlite3_mutex_enter(p->db->mutex);
- /* The race condition here is harmless. If two threads call this
- ** routine on the same Vdbe at the same time, they both might end
- ** up initializing the Vdbe.azVar[] array. That is a little extra
- ** work but it results in the same answer.
- */
- for(j=0, pOp=p->aOp; j<p->nOp; j++, pOp++){
- if( pOp->opcode==OP_Variable ){
- assert( pOp->p1>0 && pOp->p1<=p->nVar );
- p->azVar[pOp->p1-1] = pOp->p4.z;
- }
- }
- p->okVar = 1;
- sqlite3_mutex_leave(p->db->mutex);
- }
-}
-
-/*
** Return the name of a wildcard parameter. Return NULL if the index
** is out of range or if the wildcard is unnamed.
**
@@ -59653,10 +63823,9 @@
*/
SQLITE_API const char *sqlite3_bind_parameter_name(sqlite3_stmt *pStmt, int i){
Vdbe *p = (Vdbe*)pStmt;
- if( p==0 || i<1 || i>p->nVar ){
+ if( p==0 || i<1 || i>p->nzVar ){
return 0;
}
- createVarMap(p);
return p->azVar[i-1];
}
@@ -59670,9 +63839,8 @@
if( p==0 ){
return 0;
}
- createVarMap(p);
if( zName ){
- for(i=0; i<p->nVar; i++){
+ for(i=0; i<p->nzVar; i++){
const char *z = p->azVar[i];
if( z && memcmp(z,zName,nName)==0 && z[nName]==0 ){
return i+1;
@@ -59750,6 +63918,14 @@
}
/*
+** Return true if the prepared statement is in need of being reset.
+*/
+SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt *pStmt){
+ Vdbe *v = (Vdbe*)pStmt;
+ return v!=0 && v->pc>0 && v->magic==VDBE_MAGIC_RUN;
+}
+
+/*
** Return a pointer to the next prepared statement after pStmt associated
** with database connection pDb. If pStmt is NULL, return the first
** prepared statement for the database connection. Return NULL if there
@@ -59793,6 +63969,8 @@
**
** This file contains code used to insert the values of host parameters
** (aka "wildcards") into the SQL text output by sqlite3_trace().
+**
+** The Vdbe parse-tree explainer is also found here.
*/
#ifndef SQLITE_OMIT_TRACE
@@ -59823,9 +64001,12 @@
}
/*
-** Return a pointer to a string in memory obtained form sqlite3DbMalloc() which
-** holds a copy of zRawSql but with host parameters expanded to their
-** current bindings.
+** This function returns a pointer to a nul-terminated string in memory
+** obtained from sqlite3DbMalloc(). If sqlite3.vdbeExecCnt is 1, then the
+** string contains a copy of zRawSql but with host parameters expanded to
+** their current bindings. Or, if sqlite3.vdbeExecCnt is greater than 1,
+** then the returned string holds a copy of zRawSql with "-- " prepended
+** to each line of text.
**
** The calling function is responsible for making sure the memory returned
** is eventually freed.
@@ -59856,63 +64037,72 @@
sqlite3StrAccumInit(&out, zBase, sizeof(zBase),
db->aLimit[SQLITE_LIMIT_LENGTH]);
out.db = db;
- while( zRawSql[0] ){
- n = findNextHostParameter(zRawSql, &nToken);
- assert( n>0 );
- sqlite3StrAccumAppend(&out, zRawSql, n);
- zRawSql += n;
- assert( zRawSql[0] || nToken==0 );
- if( nToken==0 ) break;
- if( zRawSql[0]=='?' ){
- if( nToken>1 ){
- assert( sqlite3Isdigit(zRawSql[1]) );
- sqlite3GetInt32(&zRawSql[1], &idx);
- }else{
- idx = nextIndex;
- }
- }else{
- assert( zRawSql[0]==':' || zRawSql[0]=='$' || zRawSql[0]=='@' );
- testcase( zRawSql[0]==':' );
- testcase( zRawSql[0]=='$' );
- testcase( zRawSql[0]=='@' );
- idx = sqlite3VdbeParameterIndex(p, zRawSql, nToken);
- assert( idx>0 );
+ if( db->vdbeExecCnt>1 ){
+ while( *zRawSql ){
+ const char *zStart = zRawSql;
+ while( *(zRawSql++)!='\n' && *zRawSql );
+ sqlite3StrAccumAppend(&out, "-- ", 3);
+ sqlite3StrAccumAppend(&out, zStart, (int)(zRawSql-zStart));
}
- zRawSql += nToken;
- nextIndex = idx + 1;
- assert( idx>0 && idx<=p->nVar );
- pVar = &p->aVar[idx-1];
- if( pVar->flags & MEM_Null ){
- sqlite3StrAccumAppend(&out, "NULL", 4);
- }else if( pVar->flags & MEM_Int ){
- sqlite3XPrintf(&out, "%lld", pVar->u.i);
- }else if( pVar->flags & MEM_Real ){
- sqlite3XPrintf(&out, "%!.15g", pVar->r);
- }else if( pVar->flags & MEM_Str ){
+ }else{
+ while( zRawSql[0] ){
+ n = findNextHostParameter(zRawSql, &nToken);
+ assert( n>0 );
+ sqlite3StrAccumAppend(&out, zRawSql, n);
+ zRawSql += n;
+ assert( zRawSql[0] || nToken==0 );
+ if( nToken==0 ) break;
+ if( zRawSql[0]=='?' ){
+ if( nToken>1 ){
+ assert( sqlite3Isdigit(zRawSql[1]) );
+ sqlite3GetInt32(&zRawSql[1], &idx);
+ }else{
+ idx = nextIndex;
+ }
+ }else{
+ assert( zRawSql[0]==':' || zRawSql[0]=='$' || zRawSql[0]=='@' );
+ testcase( zRawSql[0]==':' );
+ testcase( zRawSql[0]=='$' );
+ testcase( zRawSql[0]=='@' );
+ idx = sqlite3VdbeParameterIndex(p, zRawSql, nToken);
+ assert( idx>0 );
+ }
+ zRawSql += nToken;
+ nextIndex = idx + 1;
+ assert( idx>0 && idx<=p->nVar );
+ pVar = &p->aVar[idx-1];
+ if( pVar->flags & MEM_Null ){
+ sqlite3StrAccumAppend(&out, "NULL", 4);
+ }else if( pVar->flags & MEM_Int ){
+ sqlite3XPrintf(&out, "%lld", pVar->u.i);
+ }else if( pVar->flags & MEM_Real ){
+ sqlite3XPrintf(&out, "%!.15g", pVar->r);
+ }else if( pVar->flags & MEM_Str ){
#ifndef SQLITE_OMIT_UTF16
- u8 enc = ENC(db);
- if( enc!=SQLITE_UTF8 ){
- Mem utf8;
- memset(&utf8, 0, sizeof(utf8));
- utf8.db = db;
- sqlite3VdbeMemSetStr(&utf8, pVar->z, pVar->n, enc, SQLITE_STATIC);
- sqlite3VdbeChangeEncoding(&utf8, SQLITE_UTF8);
- sqlite3XPrintf(&out, "'%.*q'", utf8.n, utf8.z);
- sqlite3VdbeMemRelease(&utf8);
- }else
+ u8 enc = ENC(db);
+ if( enc!=SQLITE_UTF8 ){
+ Mem utf8;
+ memset(&utf8, 0, sizeof(utf8));
+ utf8.db = db;
+ sqlite3VdbeMemSetStr(&utf8, pVar->z, pVar->n, enc, SQLITE_STATIC);
+ sqlite3VdbeChangeEncoding(&utf8, SQLITE_UTF8);
+ sqlite3XPrintf(&out, "'%.*q'", utf8.n, utf8.z);
+ sqlite3VdbeMemRelease(&utf8);
+ }else
#endif
- {
- sqlite3XPrintf(&out, "'%.*q'", pVar->n, pVar->z);
+ {
+ sqlite3XPrintf(&out, "'%.*q'", pVar->n, pVar->z);
+ }
+ }else if( pVar->flags & MEM_Zero ){
+ sqlite3XPrintf(&out, "zeroblob(%d)", pVar->u.nZero);
+ }else{
+ assert( pVar->flags & MEM_Blob );
+ sqlite3StrAccumAppend(&out, "x'", 2);
+ for(i=0; i<pVar->n; i++){
+ sqlite3XPrintf(&out, "%02x", pVar->z[i]&0xff);
+ }
+ sqlite3StrAccumAppend(&out, "'", 1);
}
- }else if( pVar->flags & MEM_Zero ){
- sqlite3XPrintf(&out, "zeroblob(%d)", pVar->u.nZero);
- }else{
- assert( pVar->flags & MEM_Blob );
- sqlite3StrAccumAppend(&out, "x'", 2);
- for(i=0; i<pVar->n; i++){
- sqlite3XPrintf(&out, "%02x", pVar->z[i]&0xff);
- }
- sqlite3StrAccumAppend(&out, "'", 1);
}
}
return sqlite3StrAccumFinish(&out);
@@ -59920,6 +64110,121 @@
#endif /* #ifndef SQLITE_OMIT_TRACE */
+/*****************************************************************************
+** The following code implements the data-structure explaining logic
+** for the Vdbe.
+*/
+
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
+
+/*
+** Allocate a new Explain object
+*/
+SQLITE_PRIVATE void sqlite3ExplainBegin(Vdbe *pVdbe){
+ if( pVdbe ){
+ sqlite3BeginBenignMalloc();
+ Explain *p = sqlite3_malloc( sizeof(Explain) );
+ if( p ){
+ memset(p, 0, sizeof(*p));
+ p->pVdbe = pVdbe;
+ sqlite3_free(pVdbe->pExplain);
+ pVdbe->pExplain = p;
+ sqlite3StrAccumInit(&p->str, p->zBase, sizeof(p->zBase),
+ SQLITE_MAX_LENGTH);
+ p->str.useMalloc = 2;
+ }else{
+ sqlite3EndBenignMalloc();
+ }
+ }
+}
+
+/*
+** Return true if the Explain ends with a new-line.
+*/
+static int endsWithNL(Explain *p){
+ return p && p->str.zText && p->str.nChar
+ && p->str.zText[p->str.nChar-1]=='\n';
+}
+
+/*
+** Append text to the indentation
+*/
+SQLITE_PRIVATE void sqlite3ExplainPrintf(Vdbe *pVdbe, const char *zFormat, ...){
+ Explain *p;
+ if( pVdbe && (p = pVdbe->pExplain)!=0 ){
+ va_list ap;
+ if( p->nIndent && endsWithNL(p) ){
+ int n = p->nIndent;
+ if( n>ArraySize(p->aIndent) ) n = ArraySize(p->aIndent);
+ sqlite3AppendSpace(&p->str, p->aIndent[n-1]);
+ }
+ va_start(ap, zFormat);
+ sqlite3VXPrintf(&p->str, 1, zFormat, ap);
+ va_end(ap);
+ }
+}
+
+/*
+** Append a '\n' if there is not already one.
+*/
+SQLITE_PRIVATE void sqlite3ExplainNL(Vdbe *pVdbe){
+ Explain *p;
+ if( pVdbe && (p = pVdbe->pExplain)!=0 && !endsWithNL(p) ){
+ sqlite3StrAccumAppend(&p->str, "\n", 1);
+ }
+}
+
+/*
+** Push a new indentation level. Subsequent lines will be indented
+** so that they begin at the current cursor position.
+*/
+SQLITE_PRIVATE void sqlite3ExplainPush(Vdbe *pVdbe){
+ Explain *p;
+ if( pVdbe && (p = pVdbe->pExplain)!=0 ){
+ if( p->str.zText && p->nIndent<ArraySize(p->aIndent) ){
+ const char *z = p->str.zText;
+ int i = p->str.nChar-1;
+ int x;
+ while( i>=0 && z[i]!='\n' ){ i--; }
+ x = (p->str.nChar - 1) - i;
+ if( p->nIndent && x<p->aIndent[p->nIndent-1] ){
+ x = p->aIndent[p->nIndent-1];
+ }
+ p->aIndent[p->nIndent] = x;
+ }
+ p->nIndent++;
+ }
+}
+
+/*
+** Pop the indentation stack by one level.
+*/
+SQLITE_PRIVATE void sqlite3ExplainPop(Vdbe *p){
+ if( p && p->pExplain ) p->pExplain->nIndent--;
+}
+
+/*
+** Free the indentation structure
+*/
+SQLITE_PRIVATE void sqlite3ExplainFinish(Vdbe *pVdbe){
+ if( pVdbe && pVdbe->pExplain ){
+ sqlite3_free(pVdbe->zExplain);
+ sqlite3ExplainNL(pVdbe);
+ pVdbe->zExplain = sqlite3StrAccumFinish(&pVdbe->pExplain->str);
+ sqlite3_free(pVdbe->pExplain);
+ pVdbe->pExplain = 0;
+ sqlite3EndBenignMalloc();
+ }
+}
+
+/*
+** Return the explanation of a virtual machine.
+*/
+SQLITE_PRIVATE const char *sqlite3VdbeExplanation(Vdbe *pVdbe){
+ return (pVdbe && pVdbe->zExplain) ? pVdbe->zExplain : 0;
+}
+#endif /* defined(SQLITE_DEBUG) */
+
/************** End of vdbetrace.c *******************************************/
/************** Begin file vdbe.c ********************************************/
/*
@@ -59974,7 +64279,7 @@
** not misused.
*/
#ifdef SQLITE_DEBUG
-# define memAboutToChange(P,M) sqlite3VdbeMemPrepareToChange(P,M)
+# define memAboutToChange(P,M) sqlite3VdbeMemAboutToChange(P,M)
#else
# define memAboutToChange(P,M)
#endif
@@ -59992,8 +64297,8 @@
/*
** When this global variable is positive, it gets decremented once before
-** each instruction in the VDBE. When reaches zero, the u1.isInterrupted
-** field of the sqlite3 structure is set in order to simulate and interrupt.
+** each instruction in the VDBE. When it reaches zero, the u1.isInterrupted
+** field of the sqlite3 structure is set in order to simulate an interrupt.
**
** This facility is used for testing purposes only. It does not function
** in an ordinary build.
@@ -60073,11 +64378,12 @@
if( ((P)->flags&MEM_Ephem)!=0 \
&& sqlite3VdbeMemMakeWriteable(P) ){ goto no_mem;}
-/*
-** Call sqlite3VdbeMemExpandBlob() on the supplied value (type Mem*)
-** P if required.
-*/
-#define ExpandBlob(P) (((P)->flags&MEM_Zero)?sqlite3VdbeMemExpandBlob(P):0)
+/* Return true if the cursor was opened using the OP_OpenSorter opcode. */
+#ifdef SQLITE_OMIT_MERGE_SORT
+# define isSorter(x) 0
+#else
+# define isSorter(x) ((x)->pSorter!=0)
+#endif
/*
** Argument pMem points at a register that will be passed to a
@@ -60111,7 +64417,7 @@
Vdbe *p, /* The virtual machine */
int iCur, /* Index of the new VdbeCursor */
int nField, /* Number of fields in the table or index */
- int iDb, /* When database the cursor belongs to, or -1 */
+ int iDb, /* Database the cursor belongs to, or -1 */
int isBtreeCursor /* True for B-Tree. False for pseudo-table or vtab */
){
/* Find the memory cell that will be used to store the blob of memory
@@ -60482,7 +64788,7 @@
**
** This macro added to every instruction that does a jump in order to
** implement a loop. This test used to be on every single instruction,
-** but that meant we more testing that we needed. By only testing the
+** but that meant we more testing than we needed. By only testing the
** flag on jump instructions, we get a (small) speed improvement.
*/
#define CHECK_FOR_INTERRUPT \
@@ -60562,7 +64868,7 @@
Op *pOp; /* Current operation */
int rc = SQLITE_OK; /* Value to return */
sqlite3 *db = p->db; /* The database */
- u8 resetSchemaOnFault = 0; /* Reset schema after an error if true */
+ u8 resetSchemaOnFault = 0; /* Reset schema after an error if positive */
u8 encoding = ENC(db); /* The database encoding */
#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
int checkProgress; /* True if progress callbacks are enabled */
@@ -60575,6 +64881,7 @@
Mem *pOut = 0; /* Output operand */
int iCompare = 0; /* Result of last OP_Compare operation */
int *aPermute = 0; /* Permutation of columns for OP_Compare */
+ i64 lastRowid = db->lastRowid; /* Saved value of the last insert ROWID */
#ifdef VDBE_PROFILE
u64 start; /* CPU clock count at start of opcode */
int origPc; /* Program counter at start of opcode */
@@ -60591,46 +64898,51 @@
struct OP_Yield_stack_vars {
int pcDest;
} aa;
+ struct OP_Null_stack_vars {
+ int cnt;
+ } ab;
struct OP_Variable_stack_vars {
Mem *pVar; /* Value being transferred */
- } ab;
+ } ac;
struct OP_Move_stack_vars {
char *zMalloc; /* Holding variable for allocated memory */
int n; /* Number of registers left to copy */
int p1; /* Register to copy from */
int p2; /* Register to copy to */
- } ac;
+ } ad;
struct OP_ResultRow_stack_vars {
Mem *pMem;
int i;
- } ad;
+ } ae;
struct OP_Concat_stack_vars {
i64 nByte;
- } ae;
+ } af;
struct OP_Remainder_stack_vars {
int flags; /* Combined MEM_* flags from both inputs */
i64 iA; /* Integer value of left operand */
i64 iB; /* Integer value of right operand */
double rA; /* Real value of left operand */
double rB; /* Real value of right operand */
- } af;
+ } ag;
struct OP_Function_stack_vars {
int i;
Mem *pArg;
sqlite3_context ctx;
sqlite3_value **apVal;
int n;
- } ag;
- struct OP_ShiftRight_stack_vars {
- i64 a;
- i64 b;
} ah;
+ struct OP_ShiftRight_stack_vars {
+ i64 iA;
+ u64 uA;
+ i64 iB;
+ u8 op;
+ } ai;
struct OP_Ge_stack_vars {
int res; /* Result of the comparison of pIn1 against pIn3 */
char affinity; /* Affinity to use for comparison */
u16 flags1; /* Copy of initial value of pIn1->flags */
u16 flags3; /* Copy of initial value of pIn3->flags */
- } ai;
+ } aj;
struct OP_Compare_stack_vars {
int n;
int i;
@@ -60640,14 +64952,14 @@
int idx;
CollSeq *pColl; /* Collating sequence to use on this term */
int bRev; /* True for DESCENDING sort order */
- } aj;
+ } ak;
struct OP_Or_stack_vars {
int v1; /* Left operand: 0==FALSE, 1==TRUE, 2==UNKNOWN or NULL */
int v2; /* Right operand: 0==FALSE, 1==TRUE, 2==UNKNOWN or NULL */
- } ak;
+ } al;
struct OP_IfNot_stack_vars {
int c;
- } al;
+ } am;
struct OP_Column_stack_vars {
u32 payloadSize; /* Number of bytes in the record */
i64 payloadSize64; /* Number of bytes in the record */
@@ -60670,12 +64982,13 @@
u32 szField; /* Number of bytes in the content of a field */
int szHdr; /* Size of the header size field at start of record */
int avail; /* Number of bytes of available data */
+ u32 t; /* A type code from the record header */
Mem *pReg; /* PseudoTable input register */
- } am;
+ } an;
struct OP_Affinity_stack_vars {
const char *zAffinity; /* The affinity to be applied */
char cAff; /* A single character of affinity */
- } an;
+ } ao;
struct OP_MakeRecord_stack_vars {
u8 *zNewRecord; /* A buffer to hold the data for the new record */
Mem *pRec; /* The new record */
@@ -60692,11 +65005,11 @@
int file_format; /* File format to use for encoding */
int i; /* Space used in zNewRecord[] */
int len; /* Length of a field */
- } ao;
+ } ap;
struct OP_Count_stack_vars {
i64 nEntry;
BtCursor *pCrsr;
- } ap;
+ } aq;
struct OP_Savepoint_stack_vars {
int p1; /* Value of P1 operand */
char *zName; /* Name of savepoint */
@@ -60706,27 +65019,28 @@
Savepoint *pTmp;
int iSavepoint;
int ii;
- } aq;
+ } ar;
struct OP_AutoCommit_stack_vars {
int desiredAutoCommit;
int iRollback;
int turnOnAC;
- } ar;
+ } as;
struct OP_Transaction_stack_vars {
Btree *pBt;
- } as;
+ } at;
struct OP_ReadCookie_stack_vars {
int iMeta;
int iDb;
int iCookie;
- } at;
+ } au;
struct OP_SetCookie_stack_vars {
Db *pDb;
- } au;
+ } av;
struct OP_VerifyCookie_stack_vars {
int iMeta;
+ int iGen;
Btree *pBt;
- } av;
+ } aw;
struct OP_OpenWrite_stack_vars {
int nField;
KeyInfo *pKeyInfo;
@@ -60736,13 +65050,16 @@
Btree *pX;
VdbeCursor *pCur;
Db *pDb;
- } aw;
+ } ax;
struct OP_OpenEphemeral_stack_vars {
VdbeCursor *pCx;
- } ax;
+ } ay;
+ struct OP_SorterOpen_stack_vars {
+ VdbeCursor *pCx;
+ } az;
struct OP_OpenPseudo_stack_vars {
VdbeCursor *pCx;
- } ay;
+ } ba;
struct OP_SeekGt_stack_vars {
int res;
int oc;
@@ -60750,18 +65067,19 @@
UnpackedRecord r;
int nField;
i64 iKey; /* The rowid we are to seek to */
- } az;
+ } bb;
struct OP_Seek_stack_vars {
VdbeCursor *pC;
- } ba;
+ } bc;
struct OP_Found_stack_vars {
int alreadyExists;
VdbeCursor *pC;
int res;
+ char *pFree;
UnpackedRecord *pIdxKey;
UnpackedRecord r;
char aTempRec[ROUND8(sizeof(UnpackedRecord)) + sizeof(Mem)*3 + 7];
- } bb;
+ } bd;
struct OP_IsUnique_stack_vars {
u16 ii;
VdbeCursor *pCx;
@@ -60770,13 +65088,13 @@
Mem *aMx;
UnpackedRecord r; /* B-Tree index search key */
i64 R; /* Rowid stored in register P3 */
- } bc;
+ } be;
struct OP_NotExists_stack_vars {
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
u64 iKey;
- } bd;
+ } bf;
struct OP_NewRowid_stack_vars {
i64 v; /* The new rowid */
VdbeCursor *pC; /* Cursor of table to get the new rowid */
@@ -60784,7 +65102,7 @@
int cnt; /* Counter to limit the number of searches */
Mem *pMem; /* Register holding largest rowid for AUTOINCREMENT */
VdbeFrame *pFrame; /* Root frame of VDBE */
- } be;
+ } bg;
struct OP_InsertInt_stack_vars {
Mem *pData; /* MEM cell holding data for the record to be inserted */
Mem *pKey; /* MEM cell holding key for the record */
@@ -60795,83 +65113,89 @@
const char *zDb; /* database name - used by the update hook */
const char *zTbl; /* Table name - used by the opdate hook */
int op; /* Opcode for update hook: SQLITE_UPDATE or SQLITE_INSERT */
- } bf;
+ } bh;
struct OP_Delete_stack_vars {
i64 iKey;
VdbeCursor *pC;
- } bg;
+ } bi;
+ struct OP_SorterCompare_stack_vars {
+ VdbeCursor *pC;
+ int res;
+ } bj;
+ struct OP_SorterData_stack_vars {
+ VdbeCursor *pC;
+ } bk;
struct OP_RowData_stack_vars {
VdbeCursor *pC;
BtCursor *pCrsr;
u32 n;
i64 n64;
- } bh;
+ } bl;
struct OP_Rowid_stack_vars {
VdbeCursor *pC;
i64 v;
sqlite3_vtab *pVtab;
const sqlite3_module *pModule;
- } bi;
+ } bm;
struct OP_NullRow_stack_vars {
VdbeCursor *pC;
- } bj;
+ } bn;
struct OP_Last_stack_vars {
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
- } bk;
+ } bo;
struct OP_Rewind_stack_vars {
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
- } bl;
+ } bp;
struct OP_Next_stack_vars {
VdbeCursor *pC;
- BtCursor *pCrsr;
int res;
- } bm;
+ } bq;
struct OP_IdxInsert_stack_vars {
VdbeCursor *pC;
BtCursor *pCrsr;
int nKey;
const char *zKey;
- } bn;
+ } br;
struct OP_IdxDelete_stack_vars {
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
UnpackedRecord r;
- } bo;
+ } bs;
struct OP_IdxRowid_stack_vars {
BtCursor *pCrsr;
VdbeCursor *pC;
i64 rowid;
- } bp;
+ } bt;
struct OP_IdxGE_stack_vars {
VdbeCursor *pC;
int res;
UnpackedRecord r;
- } bq;
+ } bu;
struct OP_Destroy_stack_vars {
int iMoved;
int iCnt;
Vdbe *pVdbe;
int iDb;
- } br;
+ } bv;
struct OP_Clear_stack_vars {
int nChange;
- } bs;
+ } bw;
struct OP_CreateTable_stack_vars {
int pgno;
int flags;
Db *pDb;
- } bt;
+ } bx;
struct OP_ParseSchema_stack_vars {
int iDb;
const char *zMaster;
char *zSql;
InitData initData;
- } bu;
+ } by;
struct OP_IntegrityCk_stack_vars {
int nRoot; /* Number of tables to check. (Number of root pages.) */
int *aRoot; /* Array of rootpage numbers for tables to be checked */
@@ -60879,14 +65203,14 @@
int nErr; /* Number of errors reported */
char *z; /* Text of the error report */
Mem *pnErr; /* Register keeping track of errors remaining */
- } bv;
+ } bz;
struct OP_RowSetRead_stack_vars {
i64 val;
- } bw;
+ } ca;
struct OP_RowSetTest_stack_vars {
int iSet;
int exists;
- } bx;
+ } cb;
struct OP_Program_stack_vars {
int nMem; /* Number of memory registers for sub-program */
int nByte; /* Bytes of runtime space required for sub-program */
@@ -60896,15 +65220,15 @@
VdbeFrame *pFrame; /* New vdbe frame to execute in */
SubProgram *pProgram; /* Sub-program to execute */
void *t; /* Token identifying trigger */
- } by;
+ } cc;
struct OP_Param_stack_vars {
VdbeFrame *pFrame;
Mem *pIn;
- } bz;
+ } cd;
struct OP_MemMax_stack_vars {
Mem *pIn1;
VdbeFrame *pFrame;
- } ca;
+ } ce;
struct OP_AggStep_stack_vars {
int n;
int i;
@@ -60912,29 +65236,34 @@
Mem *pRec;
sqlite3_context ctx;
sqlite3_value **apVal;
- } cb;
+ } cf;
struct OP_AggFinal_stack_vars {
Mem *pMem;
- } cc;
+ } cg;
+ struct OP_Checkpoint_stack_vars {
+ int i; /* Loop counter */
+ int aRes[3]; /* Results */
+ Mem *pMem; /* Write results here */
+ } ch;
struct OP_JournalMode_stack_vars {
Btree *pBt; /* Btree to change journal mode of */
Pager *pPager; /* Pager associated with pBt */
int eNew; /* New journal mode */
int eOld; /* The old journal mode */
const char *zFilename; /* Name of database file for pPager */
- } cd;
+ } ci;
struct OP_IncrVacuum_stack_vars {
Btree *pBt;
- } ce;
+ } cj;
struct OP_VBegin_stack_vars {
VTable *pVTab;
- } cf;
+ } ck;
struct OP_VOpen_stack_vars {
VdbeCursor *pCur;
sqlite3_vtab_cursor *pVtabCursor;
sqlite3_vtab *pVtab;
sqlite3_module *pModule;
- } cg;
+ } cl;
struct OP_VFilter_stack_vars {
int nArg;
int iQuery;
@@ -60947,23 +65276,23 @@
int res;
int i;
Mem **apArg;
- } ch;
+ } cm;
struct OP_VColumn_stack_vars {
sqlite3_vtab *pVtab;
const sqlite3_module *pModule;
Mem *pDest;
sqlite3_context sContext;
- } ci;
+ } cn;
struct OP_VNext_stack_vars {
sqlite3_vtab *pVtab;
const sqlite3_module *pModule;
int res;
VdbeCursor *pCur;
- } cj;
+ } co;
struct OP_VRename_stack_vars {
sqlite3_vtab *pVtab;
Mem *pName;
- } ck;
+ } cp;
struct OP_VUpdate_stack_vars {
sqlite3_vtab *pVtab;
sqlite3_module *pModule;
@@ -60972,16 +65301,17 @@
sqlite_int64 rowid;
Mem **apArg;
Mem *pX;
- } cl;
+ } cq;
struct OP_Trace_stack_vars {
char *zTrace;
- } cm;
+ char *z;
+ } cr;
} u;
/* End automatically generated code
********************************************************************/
assert( p->magic==VDBE_MAGIC_RUN ); /* sqlite3_step() verifies this */
- sqlite3VdbeMutexArrayEnter(p);
+ sqlite3VdbeEnter(p);
if( p->rc==SQLITE_NOMEM ){
/* This happens if a malloc() inside a call to sqlite3_column_text() or
** sqlite3_column_text16() failed. */
@@ -61075,7 +65405,7 @@
assert( pOp->p2<=p->nMem );
pOut = &aMem[pOp->p2];
memAboutToChange(p, pOut);
- sqlite3VdbeMemReleaseExternal(pOut);
+ VdbeMemRelease(pOut);
pOut->flags = MEM_Int;
}
@@ -61166,7 +65496,8 @@
** Write the current address onto register P1
** and then jump to address P2.
*/
-case OP_Gosub: { /* jump, in1 */
+case OP_Gosub: { /* jump */
+ assert( pOp->p1>0 && pOp->p1<=p->nMem );
pIn1 = &aMem[pOp->p1];
assert( (pIn1->flags & MEM_Dyn)==0 );
memAboutToChange(p, pIn1);
@@ -61208,7 +65539,7 @@
/* Opcode: HaltIfNull P1 P2 P3 P4 *
**
-** Check the value in register P3. If is is NULL then Halt using
+** Check the value in register P3. If it is NULL then Halt using
** parameter P1, P2, and P4 as if this were a Halt instruction. If the
** value in register P3 is not NULL, then this routine is a no-op.
*/
@@ -61245,6 +65576,7 @@
p->nFrame--;
sqlite3VdbeSetChanges(db, p->nChange);
pc = sqlite3VdbeFrameRestore(pFrame);
+ lastRowid = db->lastRowid;
if( pOp->p2==OE_Ignore ){
/* Instruction pc is the OP_Program that invoked the sub-program
** currently being halted. If the p2 instruction of this OP_Halt
@@ -61364,12 +65696,27 @@
break;
}
-/* Opcode: Null * P2 * * *
+/* Opcode: Null * P2 P3 * *
**
-** Write a NULL into register P2.
+** Write a NULL into registers P2. If P3 greater than P2, then also write
+** NULL into register P3 and ever register in between P2 and P3. If P3
+** is less than P2 (typically P3 is zero) then only register P2 is
+** set to NULL
*/
case OP_Null: { /* out2-prerelease */
+#if 0 /* local variables moved into u.ab */
+ int cnt;
+#endif /* local variables moved into u.ab */
+ u.ab.cnt = pOp->p3-pOp->p2;
+ assert( pOp->p3<=p->nMem );
pOut->flags = MEM_Null;
+ while( u.ab.cnt>0 ){
+ pOut++;
+ memAboutToChange(p, pOut);
+ VdbeMemRelease(pOut);
+ pOut->flags = MEM_Null;
+ u.ab.cnt--;
+ }
break;
}
@@ -61395,16 +65742,17 @@
** The P4 value is used by sqlite3_bind_parameter_name().
*/
case OP_Variable: { /* out2-prerelease */
-#if 0 /* local variables moved into u.ab */
+#if 0 /* local variables moved into u.ac */
Mem *pVar; /* Value being transferred */
-#endif /* local variables moved into u.ab */
+#endif /* local variables moved into u.ac */
assert( pOp->p1>0 && pOp->p1<=p->nVar );
- u.ab.pVar = &p->aVar[pOp->p1 - 1];
- if( sqlite3VdbeMemTooBig(u.ab.pVar) ){
+ assert( pOp->p4.z==0 || pOp->p4.z==p->azVar[pOp->p1-1] );
+ u.ac.pVar = &p->aVar[pOp->p1 - 1];
+ if( sqlite3VdbeMemTooBig(u.ac.pVar) ){
goto too_big;
}
- sqlite3VdbeMemShallowCopy(pOut, u.ab.pVar, MEM_Static);
+ sqlite3VdbeMemShallowCopy(pOut, u.ac.pVar, MEM_Static);
UPDATE_MAX_BLOBSIZE(pOut);
break;
}
@@ -61417,31 +65765,36 @@
** P1..P1+P3-1 and P2..P2+P3-1 to overlap.
*/
case OP_Move: {
-#if 0 /* local variables moved into u.ac */
+#if 0 /* local variables moved into u.ad */
char *zMalloc; /* Holding variable for allocated memory */
int n; /* Number of registers left to copy */
int p1; /* Register to copy from */
int p2; /* Register to copy to */
-#endif /* local variables moved into u.ac */
+#endif /* local variables moved into u.ad */
- u.ac.n = pOp->p3;
- u.ac.p1 = pOp->p1;
- u.ac.p2 = pOp->p2;
- assert( u.ac.n>0 && u.ac.p1>0 && u.ac.p2>0 );
- assert( u.ac.p1+u.ac.n<=u.ac.p2 || u.ac.p2+u.ac.n<=u.ac.p1 );
+ u.ad.n = pOp->p3;
+ u.ad.p1 = pOp->p1;
+ u.ad.p2 = pOp->p2;
+ assert( u.ad.n>0 && u.ad.p1>0 && u.ad.p2>0 );
+ assert( u.ad.p1+u.ad.n<=u.ad.p2 || u.ad.p2+u.ad.n<=u.ad.p1 );
- pIn1 = &aMem[u.ac.p1];
- pOut = &aMem[u.ac.p2];
- while( u.ac.n-- ){
+ pIn1 = &aMem[u.ad.p1];
+ pOut = &aMem[u.ad.p2];
+ while( u.ad.n-- ){
assert( pOut<=&aMem[p->nMem] );
assert( pIn1<=&aMem[p->nMem] );
assert( memIsValid(pIn1) );
memAboutToChange(p, pOut);
- u.ac.zMalloc = pOut->zMalloc;
+ u.ad.zMalloc = pOut->zMalloc;
pOut->zMalloc = 0;
sqlite3VdbeMemMove(pOut, pIn1);
- pIn1->zMalloc = u.ac.zMalloc;
- REGISTER_TRACE(u.ac.p2++, pOut);
+#ifdef SQLITE_DEBUG
+ if( pOut->pScopyFrom>=&aMem[u.ad.p1] && pOut->pScopyFrom<&aMem[u.ad.p1+pOp->p3] ){
+ pOut->pScopyFrom += u.ad.p1 - pOp->p2;
+ }
+#endif
+ pIn1->zMalloc = u.ad.zMalloc;
+ REGISTER_TRACE(u.ad.p2++, pOut);
pIn1++;
pOut++;
}
@@ -61498,10 +65851,10 @@
** row.
*/
case OP_ResultRow: {
-#if 0 /* local variables moved into u.ad */
+#if 0 /* local variables moved into u.ae */
Mem *pMem;
int i;
-#endif /* local variables moved into u.ad */
+#endif /* local variables moved into u.ae */
assert( p->nResColumn==pOp->p2 );
assert( pOp->p1>0 );
assert( pOp->p1+pOp->p2<=p->nMem+1 );
@@ -61541,17 +65894,17 @@
/* Make sure the results of the current row are \000 terminated
** and have an assigned type. The results are de-ephemeralized as
- ** as side effect.
+ ** a side effect.
*/
- u.ad.pMem = p->pResultSet = &aMem[pOp->p1];
- for(u.ad.i=0; u.ad.i<pOp->p2; u.ad.i++){
- assert( memIsValid(&u.ad.pMem[u.ad.i]) );
- Deephemeralize(&u.ad.pMem[u.ad.i]);
- assert( (u.ad.pMem[u.ad.i].flags & MEM_Ephem)==0
- || (u.ad.pMem[u.ad.i].flags & (MEM_Str|MEM_Blob))==0 );
- sqlite3VdbeMemNulTerminate(&u.ad.pMem[u.ad.i]);
- sqlite3VdbeMemStoreType(&u.ad.pMem[u.ad.i]);
- REGISTER_TRACE(pOp->p1+u.ad.i, &u.ad.pMem[u.ad.i]);
+ u.ae.pMem = p->pResultSet = &aMem[pOp->p1];
+ for(u.ae.i=0; u.ae.i<pOp->p2; u.ae.i++){
+ assert( memIsValid(&u.ae.pMem[u.ae.i]) );
+ Deephemeralize(&u.ae.pMem[u.ae.i]);
+ assert( (u.ae.pMem[u.ae.i].flags & MEM_Ephem)==0
+ || (u.ae.pMem[u.ae.i].flags & (MEM_Str|MEM_Blob))==0 );
+ sqlite3VdbeMemNulTerminate(&u.ae.pMem[u.ae.i]);
+ sqlite3VdbeMemStoreType(&u.ae.pMem[u.ae.i]);
+ REGISTER_TRACE(pOp->p1+u.ae.i, &u.ae.pMem[u.ae.i]);
}
if( db->mallocFailed ) goto no_mem;
@@ -61575,9 +65928,9 @@
** to avoid a memcpy().
*/
case OP_Concat: { /* same as TK_CONCAT, in1, in2, out3 */
-#if 0 /* local variables moved into u.ae */
+#if 0 /* local variables moved into u.af */
i64 nByte;
-#endif /* local variables moved into u.ae */
+#endif /* local variables moved into u.af */
pIn1 = &aMem[pOp->p1];
pIn2 = &aMem[pOp->p2];
@@ -61590,22 +65943,22 @@
if( ExpandBlob(pIn1) || ExpandBlob(pIn2) ) goto no_mem;
Stringify(pIn1, encoding);
Stringify(pIn2, encoding);
- u.ae.nByte = pIn1->n + pIn2->n;
- if( u.ae.nByte>db->aLimit[SQLITE_LIMIT_LENGTH] ){
+ u.af.nByte = pIn1->n + pIn2->n;
+ if( u.af.nByte>db->aLimit[SQLITE_LIMIT_LENGTH] ){
goto too_big;
}
MemSetTypeFlag(pOut, MEM_Str);
- if( sqlite3VdbeMemGrow(pOut, (int)u.ae.nByte+2, pOut==pIn2) ){
+ if( sqlite3VdbeMemGrow(pOut, (int)u.af.nByte+2, pOut==pIn2) ){
goto no_mem;
}
if( pOut!=pIn2 ){
memcpy(pOut->z, pIn2->z, pIn2->n);
}
memcpy(&pOut->z[pIn2->n], pIn1->z, pIn1->n);
- pOut->z[u.ae.nByte] = 0;
- pOut->z[u.ae.nByte+1] = 0;
+ pOut->z[u.af.nByte] = 0;
+ pOut->z[u.af.nByte+1] = 0;
pOut->flags |= MEM_Term;
- pOut->n = (int)u.ae.nByte;
+ pOut->n = (int)u.af.nByte;
pOut->enc = encoding;
UPDATE_MAX_BLOBSIZE(pOut);
break;
@@ -61649,82 +66002,76 @@
case OP_Multiply: /* same as TK_STAR, in1, in2, out3 */
case OP_Divide: /* same as TK_SLASH, in1, in2, out3 */
case OP_Remainder: { /* same as TK_REM, in1, in2, out3 */
-#if 0 /* local variables moved into u.af */
+#if 0 /* local variables moved into u.ag */
int flags; /* Combined MEM_* flags from both inputs */
i64 iA; /* Integer value of left operand */
i64 iB; /* Integer value of right operand */
double rA; /* Real value of left operand */
double rB; /* Real value of right operand */
-#endif /* local variables moved into u.af */
+#endif /* local variables moved into u.ag */
pIn1 = &aMem[pOp->p1];
applyNumericAffinity(pIn1);
pIn2 = &aMem[pOp->p2];
applyNumericAffinity(pIn2);
pOut = &aMem[pOp->p3];
- u.af.flags = pIn1->flags | pIn2->flags;
- if( (u.af.flags & MEM_Null)!=0 ) goto arithmetic_result_is_null;
+ u.ag.flags = pIn1->flags | pIn2->flags;
+ if( (u.ag.flags & MEM_Null)!=0 ) goto arithmetic_result_is_null;
if( (pIn1->flags & pIn2->flags & MEM_Int)==MEM_Int ){
- u.af.iA = pIn1->u.i;
- u.af.iB = pIn2->u.i;
+ u.ag.iA = pIn1->u.i;
+ u.ag.iB = pIn2->u.i;
switch( pOp->opcode ){
- case OP_Add: u.af.iB += u.af.iA; break;
- case OP_Subtract: u.af.iB -= u.af.iA; break;
- case OP_Multiply: u.af.iB *= u.af.iA; break;
+ case OP_Add: if( sqlite3AddInt64(&u.ag.iB,u.ag.iA) ) goto fp_math; break;
+ case OP_Subtract: if( sqlite3SubInt64(&u.ag.iB,u.ag.iA) ) goto fp_math; break;
+ case OP_Multiply: if( sqlite3MulInt64(&u.ag.iB,u.ag.iA) ) goto fp_math; break;
case OP_Divide: {
- if( u.af.iA==0 ) goto arithmetic_result_is_null;
- /* Dividing the largest possible negative 64-bit integer (1<<63) by
- ** -1 returns an integer too large to store in a 64-bit data-type. On
- ** some architectures, the value overflows to (1<<63). On others,
- ** a SIGFPE is issued. The following statement normalizes this
- ** behavior so that all architectures behave as if integer
- ** overflow occurred.
- */
- if( u.af.iA==-1 && u.af.iB==SMALLEST_INT64 ) u.af.iA = 1;
- u.af.iB /= u.af.iA;
+ if( u.ag.iA==0 ) goto arithmetic_result_is_null;
+ if( u.ag.iA==-1 && u.ag.iB==SMALLEST_INT64 ) goto fp_math;
+ u.ag.iB /= u.ag.iA;
break;
}
default: {
- if( u.af.iA==0 ) goto arithmetic_result_is_null;
- if( u.af.iA==-1 ) u.af.iA = 1;
- u.af.iB %= u.af.iA;
+ if( u.ag.iA==0 ) goto arithmetic_result_is_null;
+ if( u.ag.iA==-1 ) u.ag.iA = 1;
+ u.ag.iB %= u.ag.iA;
break;
}
}
- pOut->u.i = u.af.iB;
+ pOut->u.i = u.ag.iB;
MemSetTypeFlag(pOut, MEM_Int);
}else{
- u.af.rA = sqlite3VdbeRealValue(pIn1);
- u.af.rB = sqlite3VdbeRealValue(pIn2);
+fp_math:
+ u.ag.rA = sqlite3VdbeRealValue(pIn1);
+ u.ag.rB = sqlite3VdbeRealValue(pIn2);
switch( pOp->opcode ){
- case OP_Add: u.af.rB += u.af.rA; break;
- case OP_Subtract: u.af.rB -= u.af.rA; break;
- case OP_Multiply: u.af.rB *= u.af.rA; break;
+ case OP_Add: u.ag.rB += u.ag.rA; break;
+ case OP_Subtract: u.ag.rB -= u.ag.rA; break;
+ case OP_Multiply: u.ag.rB *= u.ag.rA; break;
case OP_Divide: {
/* (double)0 In case of SQLITE_OMIT_FLOATING_POINT... */
- if( u.af.rA==(double)0 ) goto arithmetic_result_is_null;
- u.af.rB /= u.af.rA;
+ if( u.ag.rA==(double)0 ) goto arithmetic_result_is_null;
+ u.ag.rB /= u.ag.rA;
break;
}
default: {
- u.af.iA = (i64)u.af.rA;
- u.af.iB = (i64)u.af.rB;
- if( u.af.iA==0 ) goto arithmetic_result_is_null;
- if( u.af.iA==-1 ) u.af.iA = 1;
- u.af.rB = (double)(u.af.iB % u.af.iA);
+ u.ag.iA = (i64)u.ag.rA;
+ u.ag.iB = (i64)u.ag.rB;
+ if( u.ag.iA==0 ) goto arithmetic_result_is_null;
+ if( u.ag.iA==-1 ) u.ag.iA = 1;
+ u.ag.rB = (double)(u.ag.iB % u.ag.iA);
break;
}
}
#ifdef SQLITE_OMIT_FLOATING_POINT
- pOut->u.i = u.af.rB;
+ pOut->u.i = u.ag.rB;
MemSetTypeFlag(pOut, MEM_Int);
#else
- if( sqlite3IsNaN(u.af.rB) ){
+ if( sqlite3IsNaN(u.ag.rB) ){
goto arithmetic_result_is_null;
}
- pOut->r = u.af.rB;
+ pOut->r = u.ag.rB;
MemSetTypeFlag(pOut, MEM_Real);
- if( (u.af.flags & MEM_Real)==0 ){
+ if( (u.ag.flags & MEM_Real)==0 ){
sqlite3VdbeIntegerAffinity(pOut);
}
#endif
@@ -61769,92 +66116,104 @@
** See also: AggStep and AggFinal
*/
case OP_Function: {
-#if 0 /* local variables moved into u.ag */
+#if 0 /* local variables moved into u.ah */
int i;
Mem *pArg;
sqlite3_context ctx;
sqlite3_value **apVal;
int n;
-#endif /* local variables moved into u.ag */
+#endif /* local variables moved into u.ah */
- u.ag.n = pOp->p5;
- u.ag.apVal = p->apArg;
- assert( u.ag.apVal || u.ag.n==0 );
+ u.ah.n = pOp->p5;
+ u.ah.apVal = p->apArg;
+ assert( u.ah.apVal || u.ah.n==0 );
assert( pOp->p3>0 && pOp->p3<=p->nMem );
pOut = &aMem[pOp->p3];
memAboutToChange(p, pOut);
- assert( u.ag.n==0 || (pOp->p2>0 && pOp->p2+u.ag.n<=p->nMem+1) );
- assert( pOp->p3<pOp->p2 || pOp->p3>=pOp->p2+u.ag.n );
- u.ag.pArg = &aMem[pOp->p2];
- for(u.ag.i=0; u.ag.i<u.ag.n; u.ag.i++, u.ag.pArg++){
- assert( memIsValid(u.ag.pArg) );
- u.ag.apVal[u.ag.i] = u.ag.pArg;
- Deephemeralize(u.ag.pArg);
- sqlite3VdbeMemStoreType(u.ag.pArg);
- REGISTER_TRACE(pOp->p2+u.ag.i, u.ag.pArg);
+ assert( u.ah.n==0 || (pOp->p2>0 && pOp->p2+u.ah.n<=p->nMem+1) );
+ assert( pOp->p3<pOp->p2 || pOp->p3>=pOp->p2+u.ah.n );
+ u.ah.pArg = &aMem[pOp->p2];
+ for(u.ah.i=0; u.ah.i<u.ah.n; u.ah.i++, u.ah.pArg++){
+ assert( memIsValid(u.ah.pArg) );
+ u.ah.apVal[u.ah.i] = u.ah.pArg;
+ Deephemeralize(u.ah.pArg);
+ sqlite3VdbeMemStoreType(u.ah.pArg);
+ REGISTER_TRACE(pOp->p2+u.ah.i, u.ah.pArg);
}
assert( pOp->p4type==P4_FUNCDEF || pOp->p4type==P4_VDBEFUNC );
if( pOp->p4type==P4_FUNCDEF ){
- u.ag.ctx.pFunc = pOp->p4.pFunc;
- u.ag.ctx.pVdbeFunc = 0;
+ u.ah.ctx.pFunc = pOp->p4.pFunc;
+ u.ah.ctx.pVdbeFunc = 0;
}else{
- u.ag.ctx.pVdbeFunc = (VdbeFunc*)pOp->p4.pVdbeFunc;
- u.ag.ctx.pFunc = u.ag.ctx.pVdbeFunc->pFunc;
+ u.ah.ctx.pVdbeFunc = (VdbeFunc*)pOp->p4.pVdbeFunc;
+ u.ah.ctx.pFunc = u.ah.ctx.pVdbeFunc->pFunc;
}
- u.ag.ctx.s.flags = MEM_Null;
- u.ag.ctx.s.db = db;
- u.ag.ctx.s.xDel = 0;
- u.ag.ctx.s.zMalloc = 0;
+ u.ah.ctx.s.flags = MEM_Null;
+ u.ah.ctx.s.db = db;
+ u.ah.ctx.s.xDel = 0;
+ u.ah.ctx.s.zMalloc = 0;
/* The output cell may already have a buffer allocated. Move
- ** the pointer to u.ag.ctx.s so in case the user-function can use
+ ** the pointer to u.ah.ctx.s so in case the user-function can use
** the already allocated buffer instead of allocating a new one.
*/
- sqlite3VdbeMemMove(&u.ag.ctx.s, pOut);
- MemSetTypeFlag(&u.ag.ctx.s, MEM_Null);
+ sqlite3VdbeMemMove(&u.ah.ctx.s, pOut);
+ MemSetTypeFlag(&u.ah.ctx.s, MEM_Null);
- u.ag.ctx.isError = 0;
- if( u.ag.ctx.pFunc->flags & SQLITE_FUNC_NEEDCOLL ){
+ u.ah.ctx.isError = 0;
+ if( u.ah.ctx.pFunc->flags & SQLITE_FUNC_NEEDCOLL ){
assert( pOp>aOp );
assert( pOp[-1].p4type==P4_COLLSEQ );
assert( pOp[-1].opcode==OP_CollSeq );
- u.ag.ctx.pColl = pOp[-1].p4.pColl;
+ u.ah.ctx.pColl = pOp[-1].p4.pColl;
}
- (*u.ag.ctx.pFunc->xFunc)(&u.ag.ctx, u.ag.n, u.ag.apVal); /* IMP: R-24505-23230 */
+ db->lastRowid = lastRowid;
+ (*u.ah.ctx.pFunc->xFunc)(&u.ah.ctx, u.ah.n, u.ah.apVal); /* IMP: R-24505-23230 */
+ lastRowid = db->lastRowid;
+
+ /* If any auxiliary data functions have been called by this user function,
+ ** immediately call the destructor for any non-static values.
+ */
+ if( u.ah.ctx.pVdbeFunc ){
+ sqlite3VdbeDeleteAuxData(u.ah.ctx.pVdbeFunc, pOp->p1);
+ pOp->p4.pVdbeFunc = u.ah.ctx.pVdbeFunc;
+ pOp->p4type = P4_VDBEFUNC;
+ }
+
if( db->mallocFailed ){
/* Even though a malloc() has failed, the implementation of the
** user function may have called an sqlite3_result_XXX() function
** to return a value. The following call releases any resources
** associated with such a value.
*/
- sqlite3VdbeMemRelease(&u.ag.ctx.s);
+ sqlite3VdbeMemRelease(&u.ah.ctx.s);
goto no_mem;
}
- /* If any auxiliary data functions have been called by this user function,
- ** immediately call the destructor for any non-static values.
- */
- if( u.ag.ctx.pVdbeFunc ){
- sqlite3VdbeDeleteAuxData(u.ag.ctx.pVdbeFunc, pOp->p1);
- pOp->p4.pVdbeFunc = u.ag.ctx.pVdbeFunc;
- pOp->p4type = P4_VDBEFUNC;
- }
-
/* If the function returned an error, throw an exception */
- if( u.ag.ctx.isError ){
- sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(&u.ag.ctx.s));
- rc = u.ag.ctx.isError;
+ if( u.ah.ctx.isError ){
+ sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(&u.ah.ctx.s));
+ rc = u.ah.ctx.isError;
}
/* Copy the result of the function into register P3 */
- sqlite3VdbeChangeEncoding(&u.ag.ctx.s, encoding);
- sqlite3VdbeMemMove(pOut, &u.ag.ctx.s);
+ sqlite3VdbeChangeEncoding(&u.ah.ctx.s, encoding);
+ sqlite3VdbeMemMove(pOut, &u.ah.ctx.s);
if( sqlite3VdbeMemTooBig(pOut) ){
goto too_big;
}
+
+#if 0
+ /* The app-defined function has done something that as caused this
+ ** statement to expire. (Perhaps the function called sqlite3_exec()
+ ** with a CREATE TABLE statement.)
+ */
+ if( p->expired ) rc = SQLITE_ABORT;
+#endif
+
REGISTER_TRACE(pOp->p3, pOut);
UPDATE_MAX_BLOBSIZE(pOut);
break;
@@ -61890,10 +66249,12 @@
case OP_BitOr: /* same as TK_BITOR, in1, in2, out3 */
case OP_ShiftLeft: /* same as TK_LSHIFT, in1, in2, out3 */
case OP_ShiftRight: { /* same as TK_RSHIFT, in1, in2, out3 */
-#if 0 /* local variables moved into u.ah */
- i64 a;
- i64 b;
-#endif /* local variables moved into u.ah */
+#if 0 /* local variables moved into u.ai */
+ i64 iA;
+ u64 uA;
+ i64 iB;
+ u8 op;
+#endif /* local variables moved into u.ai */
pIn1 = &aMem[pOp->p1];
pIn2 = &aMem[pOp->p2];
@@ -61902,16 +66263,38 @@
sqlite3VdbeMemSetNull(pOut);
break;
}
- u.ah.a = sqlite3VdbeIntValue(pIn2);
- u.ah.b = sqlite3VdbeIntValue(pIn1);
- switch( pOp->opcode ){
- case OP_BitAnd: u.ah.a &= u.ah.b; break;
- case OP_BitOr: u.ah.a |= u.ah.b; break;
- case OP_ShiftLeft: u.ah.a <<= u.ah.b; break;
- default: assert( pOp->opcode==OP_ShiftRight );
- u.ah.a >>= u.ah.b; break;
+ u.ai.iA = sqlite3VdbeIntValue(pIn2);
+ u.ai.iB = sqlite3VdbeIntValue(pIn1);
+ u.ai.op = pOp->opcode;
+ if( u.ai.op==OP_BitAnd ){
+ u.ai.iA &= u.ai.iB;
+ }else if( u.ai.op==OP_BitOr ){
+ u.ai.iA |= u.ai.iB;
+ }else if( u.ai.iB!=0 ){
+ assert( u.ai.op==OP_ShiftRight || u.ai.op==OP_ShiftLeft );
+
+ /* If shifting by a negative amount, shift in the other direction */
+ if( u.ai.iB<0 ){
+ assert( OP_ShiftRight==OP_ShiftLeft+1 );
+ u.ai.op = 2*OP_ShiftLeft + 1 - u.ai.op;
+ u.ai.iB = u.ai.iB>(-64) ? -u.ai.iB : 64;
+ }
+
+ if( u.ai.iB>=64 ){
+ u.ai.iA = (u.ai.iA>=0 || u.ai.op==OP_ShiftLeft) ? 0 : -1;
+ }else{
+ memcpy(&u.ai.uA, &u.ai.iA, sizeof(u.ai.uA));
+ if( u.ai.op==OP_ShiftLeft ){
+ u.ai.uA <<= u.ai.iB;
+ }else{
+ u.ai.uA >>= u.ai.iB;
+ /* Sign-extend on a right shift of a negative number */
+ if( u.ai.iA<0 ) u.ai.uA |= ((((u64)0xffffffff)<<32)|0xffffffff) << (64-u.ai.iB);
+ }
+ memcpy(&u.ai.iA, &u.ai.uA, sizeof(u.ai.iA));
+ }
}
- pOut->u.i = u.ah.a;
+ pOut->u.i = u.ai.iA;
MemSetTypeFlag(pOut, MEM_Int);
break;
}
@@ -62113,7 +66496,7 @@
** If SQLITE_NULLEQ is set in P5 then the result of comparison is always either
** true or false and is never NULL. If both operands are NULL then the result
** of comparison is false. If either operand is NULL then the result is true.
-** If neither operand is NULL the the result is the same as it would be if
+** If neither operand is NULL the result is the same as it would be if
** the SQLITE_NULLEQ flag were omitted from P5.
*/
/* Opcode: Eq P1 P2 P3 P4 P5
@@ -62125,7 +66508,7 @@
** If SQLITE_NULLEQ is set in P5 then the result of comparison is always either
** true or false and is never NULL. If both operands are NULL then the result
** of comparison is true. If either operand is NULL then the result is false.
-** If neither operand is NULL the the result is the same as it would be if
+** If neither operand is NULL the result is the same as it would be if
** the SQLITE_NULLEQ flag were omitted from P5.
*/
/* Opcode: Le P1 P2 P3 P4 P5
@@ -62152,18 +66535,18 @@
case OP_Le: /* same as TK_LE, jump, in1, in3 */
case OP_Gt: /* same as TK_GT, jump, in1, in3 */
case OP_Ge: { /* same as TK_GE, jump, in1, in3 */
-#if 0 /* local variables moved into u.ai */
+#if 0 /* local variables moved into u.aj */
int res; /* Result of the comparison of pIn1 against pIn3 */
char affinity; /* Affinity to use for comparison */
u16 flags1; /* Copy of initial value of pIn1->flags */
u16 flags3; /* Copy of initial value of pIn3->flags */
-#endif /* local variables moved into u.ai */
+#endif /* local variables moved into u.aj */
pIn1 = &aMem[pOp->p1];
pIn3 = &aMem[pOp->p3];
- u.ai.flags1 = pIn1->flags;
- u.ai.flags3 = pIn3->flags;
- if( (pIn1->flags | pIn3->flags)&MEM_Null ){
+ u.aj.flags1 = pIn1->flags;
+ u.aj.flags3 = pIn3->flags;
+ if( (u.aj.flags1 | u.aj.flags3)&MEM_Null ){
/* One or both operands are NULL */
if( pOp->p5 & SQLITE_NULLEQ ){
/* If SQLITE_NULLEQ is set (which will only happen if the operator is
@@ -62171,7 +66554,7 @@
** or not both operands are null.
*/
assert( pOp->opcode==OP_Eq || pOp->opcode==OP_Ne );
- u.ai.res = (pIn1->flags & pIn3->flags & MEM_Null)==0;
+ u.aj.res = (u.aj.flags1 & u.aj.flags3 & MEM_Null)==0;
}else{
/* SQLITE_NULLEQ is clear and at least one operand is NULL,
** then the result is always NULL.
@@ -62188,40 +66571,40 @@
}
}else{
/* Neither operand is NULL. Do a comparison. */
- u.ai.affinity = pOp->p5 & SQLITE_AFF_MASK;
- if( u.ai.affinity ){
- applyAffinity(pIn1, u.ai.affinity, encoding);
- applyAffinity(pIn3, u.ai.affinity, encoding);
+ u.aj.affinity = pOp->p5 & SQLITE_AFF_MASK;
+ if( u.aj.affinity ){
+ applyAffinity(pIn1, u.aj.affinity, encoding);
+ applyAffinity(pIn3, u.aj.affinity, encoding);
if( db->mallocFailed ) goto no_mem;
}
assert( pOp->p4type==P4_COLLSEQ || pOp->p4.pColl==0 );
ExpandBlob(pIn1);
ExpandBlob(pIn3);
- u.ai.res = sqlite3MemCompare(pIn3, pIn1, pOp->p4.pColl);
+ u.aj.res = sqlite3MemCompare(pIn3, pIn1, pOp->p4.pColl);
}
switch( pOp->opcode ){
- case OP_Eq: u.ai.res = u.ai.res==0; break;
- case OP_Ne: u.ai.res = u.ai.res!=0; break;
- case OP_Lt: u.ai.res = u.ai.res<0; break;
- case OP_Le: u.ai.res = u.ai.res<=0; break;
- case OP_Gt: u.ai.res = u.ai.res>0; break;
- default: u.ai.res = u.ai.res>=0; break;
+ case OP_Eq: u.aj.res = u.aj.res==0; break;
+ case OP_Ne: u.aj.res = u.aj.res!=0; break;
+ case OP_Lt: u.aj.res = u.aj.res<0; break;
+ case OP_Le: u.aj.res = u.aj.res<=0; break;
+ case OP_Gt: u.aj.res = u.aj.res>0; break;
+ default: u.aj.res = u.aj.res>=0; break;
}
if( pOp->p5 & SQLITE_STOREP2 ){
pOut = &aMem[pOp->p2];
memAboutToChange(p, pOut);
MemSetTypeFlag(pOut, MEM_Int);
- pOut->u.i = u.ai.res;
+ pOut->u.i = u.aj.res;
REGISTER_TRACE(pOp->p2, pOut);
- }else if( u.ai.res ){
+ }else if( u.aj.res ){
pc = pOp->p2-1;
}
/* Undo any changes made by applyAffinity() to the input registers. */
- pIn1->flags = (pIn1->flags&~MEM_TypeMask) | (u.ai.flags1&MEM_TypeMask);
- pIn3->flags = (pIn3->flags&~MEM_TypeMask) | (u.ai.flags3&MEM_TypeMask);
+ pIn1->flags = (pIn1->flags&~MEM_TypeMask) | (u.aj.flags1&MEM_TypeMask);
+ pIn3->flags = (pIn3->flags&~MEM_TypeMask) | (u.aj.flags3&MEM_TypeMask);
break;
}
@@ -62256,7 +66639,7 @@
** and strings are less than blobs.
*/
case OP_Compare: {
-#if 0 /* local variables moved into u.aj */
+#if 0 /* local variables moved into u.ak */
int n;
int i;
int p1;
@@ -62265,37 +66648,37 @@
int idx;
CollSeq *pColl; /* Collating sequence to use on this term */
int bRev; /* True for DESCENDING sort order */
-#endif /* local variables moved into u.aj */
+#endif /* local variables moved into u.ak */
- u.aj.n = pOp->p3;
- u.aj.pKeyInfo = pOp->p4.pKeyInfo;
- assert( u.aj.n>0 );
- assert( u.aj.pKeyInfo!=0 );
- u.aj.p1 = pOp->p1;
- u.aj.p2 = pOp->p2;
+ u.ak.n = pOp->p3;
+ u.ak.pKeyInfo = pOp->p4.pKeyInfo;
+ assert( u.ak.n>0 );
+ assert( u.ak.pKeyInfo!=0 );
+ u.ak.p1 = pOp->p1;
+ u.ak.p2 = pOp->p2;
#if SQLITE_DEBUG
if( aPermute ){
int k, mx = 0;
- for(k=0; k<u.aj.n; k++) if( aPermute[k]>mx ) mx = aPermute[k];
- assert( u.aj.p1>0 && u.aj.p1+mx<=p->nMem+1 );
- assert( u.aj.p2>0 && u.aj.p2+mx<=p->nMem+1 );
+ for(k=0; k<u.ak.n; k++) if( aPermute[k]>mx ) mx = aPermute[k];
+ assert( u.ak.p1>0 && u.ak.p1+mx<=p->nMem+1 );
+ assert( u.ak.p2>0 && u.ak.p2+mx<=p->nMem+1 );
}else{
- assert( u.aj.p1>0 && u.aj.p1+u.aj.n<=p->nMem+1 );
- assert( u.aj.p2>0 && u.aj.p2+u.aj.n<=p->nMem+1 );
+ assert( u.ak.p1>0 && u.ak.p1+u.ak.n<=p->nMem+1 );
+ assert( u.ak.p2>0 && u.ak.p2+u.ak.n<=p->nMem+1 );
}
#endif /* SQLITE_DEBUG */
- for(u.aj.i=0; u.aj.i<u.aj.n; u.aj.i++){
- u.aj.idx = aPermute ? aPermute[u.aj.i] : u.aj.i;
- assert( memIsValid(&aMem[u.aj.p1+u.aj.idx]) );
- assert( memIsValid(&aMem[u.aj.p2+u.aj.idx]) );
- REGISTER_TRACE(u.aj.p1+u.aj.idx, &aMem[u.aj.p1+u.aj.idx]);
- REGISTER_TRACE(u.aj.p2+u.aj.idx, &aMem[u.aj.p2+u.aj.idx]);
- assert( u.aj.i<u.aj.pKeyInfo->nField );
- u.aj.pColl = u.aj.pKeyInfo->aColl[u.aj.i];
- u.aj.bRev = u.aj.pKeyInfo->aSortOrder[u.aj.i];
- iCompare = sqlite3MemCompare(&aMem[u.aj.p1+u.aj.idx], &aMem[u.aj.p2+u.aj.idx], u.aj.pColl);
+ for(u.ak.i=0; u.ak.i<u.ak.n; u.ak.i++){
+ u.ak.idx = aPermute ? aPermute[u.ak.i] : u.ak.i;
+ assert( memIsValid(&aMem[u.ak.p1+u.ak.idx]) );
+ assert( memIsValid(&aMem[u.ak.p2+u.ak.idx]) );
+ REGISTER_TRACE(u.ak.p1+u.ak.idx, &aMem[u.ak.p1+u.ak.idx]);
+ REGISTER_TRACE(u.ak.p2+u.ak.idx, &aMem[u.ak.p2+u.ak.idx]);
+ assert( u.ak.i<u.ak.pKeyInfo->nField );
+ u.ak.pColl = u.ak.pKeyInfo->aColl[u.ak.i];
+ u.ak.bRev = u.ak.pKeyInfo->aSortOrder[u.ak.i];
+ iCompare = sqlite3MemCompare(&aMem[u.ak.p1+u.ak.idx], &aMem[u.ak.p2+u.ak.idx], u.ak.pColl);
if( iCompare ){
- if( u.aj.bRev ) iCompare = -iCompare;
+ if( u.ak.bRev ) iCompare = -iCompare;
break;
}
}
@@ -62340,35 +66723,35 @@
*/
case OP_And: /* same as TK_AND, in1, in2, out3 */
case OP_Or: { /* same as TK_OR, in1, in2, out3 */
-#if 0 /* local variables moved into u.ak */
+#if 0 /* local variables moved into u.al */
int v1; /* Left operand: 0==FALSE, 1==TRUE, 2==UNKNOWN or NULL */
int v2; /* Right operand: 0==FALSE, 1==TRUE, 2==UNKNOWN or NULL */
-#endif /* local variables moved into u.ak */
+#endif /* local variables moved into u.al */
pIn1 = &aMem[pOp->p1];
if( pIn1->flags & MEM_Null ){
- u.ak.v1 = 2;
+ u.al.v1 = 2;
}else{
- u.ak.v1 = sqlite3VdbeIntValue(pIn1)!=0;
+ u.al.v1 = sqlite3VdbeIntValue(pIn1)!=0;
}
pIn2 = &aMem[pOp->p2];
if( pIn2->flags & MEM_Null ){
- u.ak.v2 = 2;
+ u.al.v2 = 2;
}else{
- u.ak.v2 = sqlite3VdbeIntValue(pIn2)!=0;
+ u.al.v2 = sqlite3VdbeIntValue(pIn2)!=0;
}
if( pOp->opcode==OP_And ){
static const unsigned char and_logic[] = { 0, 0, 0, 0, 1, 2, 0, 2, 2 };
- u.ak.v1 = and_logic[u.ak.v1*3+u.ak.v2];
+ u.al.v1 = and_logic[u.al.v1*3+u.al.v2];
}else{
static const unsigned char or_logic[] = { 0, 1, 2, 1, 1, 1, 2, 1, 2 };
- u.ak.v1 = or_logic[u.ak.v1*3+u.ak.v2];
+ u.al.v1 = or_logic[u.al.v1*3+u.al.v2];
}
pOut = &aMem[pOp->p3];
- if( u.ak.v1==2 ){
+ if( u.al.v1==2 ){
MemSetTypeFlag(pOut, MEM_Null);
}else{
- pOut->u.i = u.ak.v1;
+ pOut->u.i = u.al.v1;
MemSetTypeFlag(pOut, MEM_Int);
}
break;
@@ -62408,35 +66791,52 @@
break;
}
+/* Opcode: Once P1 P2 * * *
+**
+** Check if OP_Once flag P1 is set. If so, jump to instruction P2. Otherwise,
+** set the flag and fall through to the next instruction.
+**
+** See also: JumpOnce
+*/
+case OP_Once: { /* jump */
+ assert( pOp->p1<p->nOnceFlag );
+ if( p->aOnceFlag[pOp->p1] ){
+ pc = pOp->p2-1;
+ }else{
+ p->aOnceFlag[pOp->p1] = 1;
+ }
+ break;
+}
+
/* Opcode: If P1 P2 P3 * *
**
-** Jump to P2 if the value in register P1 is true. The value is
+** Jump to P2 if the value in register P1 is true. The value
** is considered true if it is numeric and non-zero. If the value
-** in P1 is NULL then take the jump if P3 is true.
+** in P1 is NULL then take the jump if P3 is non-zero.
*/
/* Opcode: IfNot P1 P2 P3 * *
**
-** Jump to P2 if the value in register P1 is False. The value is
-** is considered true if it has a numeric value of zero. If the value
-** in P1 is NULL then take the jump if P3 is true.
+** Jump to P2 if the value in register P1 is False. The value
+** is considered false if it has a numeric value of zero. If the value
+** in P1 is NULL then take the jump if P3 is zero.
*/
case OP_If: /* jump, in1 */
case OP_IfNot: { /* jump, in1 */
-#if 0 /* local variables moved into u.al */
+#if 0 /* local variables moved into u.am */
int c;
-#endif /* local variables moved into u.al */
+#endif /* local variables moved into u.am */
pIn1 = &aMem[pOp->p1];
if( pIn1->flags & MEM_Null ){
- u.al.c = pOp->p3;
+ u.am.c = pOp->p3;
}else{
#ifdef SQLITE_OMIT_FLOATING_POINT
- u.al.c = sqlite3VdbeIntValue(pIn1)!=0;
+ u.am.c = sqlite3VdbeIntValue(pIn1)!=0;
#else
- u.al.c = sqlite3VdbeRealValue(pIn1)!=0.0;
+ u.am.c = sqlite3VdbeRealValue(pIn1)!=0.0;
#endif
- if( pOp->opcode==OP_IfNot ) u.al.c = !u.al.c;
+ if( pOp->opcode==OP_IfNot ) u.am.c = !u.am.c;
}
- if( u.al.c ){
+ if( u.am.c ){
pc = pOp->p2-1;
}
break;
@@ -62486,7 +66886,7 @@
** register has changed should have this bit set.
*/
case OP_Column: {
-#if 0 /* local variables moved into u.am */
+#if 0 /* local variables moved into u.an */
u32 payloadSize; /* Number of bytes in the record */
i64 payloadSize64; /* Number of bytes in the record */
int p1; /* P1 value of the opcode */
@@ -62508,127 +66908,128 @@
u32 szField; /* Number of bytes in the content of a field */
int szHdr; /* Size of the header size field at start of record */
int avail; /* Number of bytes of available data */
+ u32 t; /* A type code from the record header */
Mem *pReg; /* PseudoTable input register */
-#endif /* local variables moved into u.am */
+#endif /* local variables moved into u.an */
- u.am.p1 = pOp->p1;
- u.am.p2 = pOp->p2;
- u.am.pC = 0;
- memset(&u.am.sMem, 0, sizeof(u.am.sMem));
- assert( u.am.p1<p->nCursor );
+ u.an.p1 = pOp->p1;
+ u.an.p2 = pOp->p2;
+ u.an.pC = 0;
+ memset(&u.an.sMem, 0, sizeof(u.an.sMem));
+ assert( u.an.p1<p->nCursor );
assert( pOp->p3>0 && pOp->p3<=p->nMem );
- u.am.pDest = &aMem[pOp->p3];
- memAboutToChange(p, u.am.pDest);
- MemSetTypeFlag(u.am.pDest, MEM_Null);
- u.am.zRec = 0;
+ u.an.pDest = &aMem[pOp->p3];
+ memAboutToChange(p, u.an.pDest);
+ u.an.zRec = 0;
- /* This block sets the variable u.am.payloadSize to be the total number of
+ /* This block sets the variable u.an.payloadSize to be the total number of
** bytes in the record.
**
- ** u.am.zRec is set to be the complete text of the record if it is available.
+ ** u.an.zRec is set to be the complete text of the record if it is available.
** The complete record text is always available for pseudo-tables
** If the record is stored in a cursor, the complete record text
- ** might be available in the u.am.pC->aRow cache. Or it might not be.
- ** If the data is unavailable, u.am.zRec is set to NULL.
+ ** might be available in the u.an.pC->aRow cache. Or it might not be.
+ ** If the data is unavailable, u.an.zRec is set to NULL.
**
** We also compute the number of columns in the record. For cursors,
** the number of columns is stored in the VdbeCursor.nField element.
*/
- u.am.pC = p->apCsr[u.am.p1];
- assert( u.am.pC!=0 );
+ u.an.pC = p->apCsr[u.an.p1];
+ assert( u.an.pC!=0 );
#ifndef SQLITE_OMIT_VIRTUALTABLE
- assert( u.am.pC->pVtabCursor==0 );
+ assert( u.an.pC->pVtabCursor==0 );
#endif
- u.am.pCrsr = u.am.pC->pCursor;
- if( u.am.pCrsr!=0 ){
+ u.an.pCrsr = u.an.pC->pCursor;
+ if( u.an.pCrsr!=0 ){
/* The record is stored in a B-Tree */
- rc = sqlite3VdbeCursorMoveto(u.am.pC);
+ rc = sqlite3VdbeCursorMoveto(u.an.pC);
if( rc ) goto abort_due_to_error;
- if( u.am.pC->nullRow ){
- u.am.payloadSize = 0;
- }else if( u.am.pC->cacheStatus==p->cacheCtr ){
- u.am.payloadSize = u.am.pC->payloadSize;
- u.am.zRec = (char*)u.am.pC->aRow;
- }else if( u.am.pC->isIndex ){
- assert( sqlite3BtreeCursorIsValid(u.am.pCrsr) );
- rc = sqlite3BtreeKeySize(u.am.pCrsr, &u.am.payloadSize64);
+ if( u.an.pC->nullRow ){
+ u.an.payloadSize = 0;
+ }else if( u.an.pC->cacheStatus==p->cacheCtr ){
+ u.an.payloadSize = u.an.pC->payloadSize;
+ u.an.zRec = (char*)u.an.pC->aRow;
+ }else if( u.an.pC->isIndex ){
+ assert( sqlite3BtreeCursorIsValid(u.an.pCrsr) );
+ VVA_ONLY(rc =) sqlite3BtreeKeySize(u.an.pCrsr, &u.an.payloadSize64);
assert( rc==SQLITE_OK ); /* True because of CursorMoveto() call above */
/* sqlite3BtreeParseCellPtr() uses getVarint32() to extract the
- ** payload size, so it is impossible for u.am.payloadSize64 to be
+ ** payload size, so it is impossible for u.an.payloadSize64 to be
** larger than 32 bits. */
- assert( (u.am.payloadSize64 & SQLITE_MAX_U32)==(u64)u.am.payloadSize64 );
- u.am.payloadSize = (u32)u.am.payloadSize64;
+ assert( (u.an.payloadSize64 & SQLITE_MAX_U32)==(u64)u.an.payloadSize64 );
+ u.an.payloadSize = (u32)u.an.payloadSize64;
}else{
- assert( sqlite3BtreeCursorIsValid(u.am.pCrsr) );
- rc = sqlite3BtreeDataSize(u.am.pCrsr, &u.am.payloadSize);
+ assert( sqlite3BtreeCursorIsValid(u.an.pCrsr) );
+ VVA_ONLY(rc =) sqlite3BtreeDataSize(u.an.pCrsr, &u.an.payloadSize);
assert( rc==SQLITE_OK ); /* DataSize() cannot fail */
}
- }else if( u.am.pC->pseudoTableReg>0 ){
- u.am.pReg = &aMem[u.am.pC->pseudoTableReg];
- assert( u.am.pReg->flags & MEM_Blob );
- assert( memIsValid(u.am.pReg) );
- u.am.payloadSize = u.am.pReg->n;
- u.am.zRec = u.am.pReg->z;
- u.am.pC->cacheStatus = (pOp->p5&OPFLAG_CLEARCACHE) ? CACHE_STALE : p->cacheCtr;
- assert( u.am.payloadSize==0 || u.am.zRec!=0 );
+ }else if( ALWAYS(u.an.pC->pseudoTableReg>0) ){
+ u.an.pReg = &aMem[u.an.pC->pseudoTableReg];
+ assert( u.an.pReg->flags & MEM_Blob );
+ assert( memIsValid(u.an.pReg) );
+ u.an.payloadSize = u.an.pReg->n;
+ u.an.zRec = u.an.pReg->z;
+ u.an.pC->cacheStatus = (pOp->p5&OPFLAG_CLEARCACHE) ? CACHE_STALE : p->cacheCtr;
+ assert( u.an.payloadSize==0 || u.an.zRec!=0 );
}else{
/* Consider the row to be NULL */
- u.am.payloadSize = 0;
+ u.an.payloadSize = 0;
}
- /* If u.am.payloadSize is 0, then just store a NULL */
- if( u.am.payloadSize==0 ){
- assert( u.am.pDest->flags&MEM_Null );
+ /* If u.an.payloadSize is 0, then just store a NULL. This can happen because of
+ ** nullRow or because of a corrupt database. */
+ if( u.an.payloadSize==0 ){
+ MemSetTypeFlag(u.an.pDest, MEM_Null);
goto op_column_out;
}
assert( db->aLimit[SQLITE_LIMIT_LENGTH]>=0 );
- if( u.am.payloadSize > (u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){
+ if( u.an.payloadSize > (u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){
goto too_big;
}
- u.am.nField = u.am.pC->nField;
- assert( u.am.p2<u.am.nField );
+ u.an.nField = u.an.pC->nField;
+ assert( u.an.p2<u.an.nField );
/* Read and parse the table header. Store the results of the parse
** into the record header cache fields of the cursor.
*/
- u.am.aType = u.am.pC->aType;
- if( u.am.pC->cacheStatus==p->cacheCtr ){
- u.am.aOffset = u.am.pC->aOffset;
+ u.an.aType = u.an.pC->aType;
+ if( u.an.pC->cacheStatus==p->cacheCtr ){
+ u.an.aOffset = u.an.pC->aOffset;
}else{
- assert(u.am.aType);
- u.am.avail = 0;
- u.am.pC->aOffset = u.am.aOffset = &u.am.aType[u.am.nField];
- u.am.pC->payloadSize = u.am.payloadSize;
- u.am.pC->cacheStatus = p->cacheCtr;
+ assert(u.an.aType);
+ u.an.avail = 0;
+ u.an.pC->aOffset = u.an.aOffset = &u.an.aType[u.an.nField];
+ u.an.pC->payloadSize = u.an.payloadSize;
+ u.an.pC->cacheStatus = p->cacheCtr;
/* Figure out how many bytes are in the header */
- if( u.am.zRec ){
- u.am.zData = u.am.zRec;
+ if( u.an.zRec ){
+ u.an.zData = u.an.zRec;
}else{
- if( u.am.pC->isIndex ){
- u.am.zData = (char*)sqlite3BtreeKeyFetch(u.am.pCrsr, &u.am.avail);
+ if( u.an.pC->isIndex ){
+ u.an.zData = (char*)sqlite3BtreeKeyFetch(u.an.pCrsr, &u.an.avail);
}else{
- u.am.zData = (char*)sqlite3BtreeDataFetch(u.am.pCrsr, &u.am.avail);
+ u.an.zData = (char*)sqlite3BtreeDataFetch(u.an.pCrsr, &u.an.avail);
}
/* If KeyFetch()/DataFetch() managed to get the entire payload,
- ** save the payload in the u.am.pC->aRow cache. That will save us from
+ ** save the payload in the u.an.pC->aRow cache. That will save us from
** having to make additional calls to fetch the content portion of
** the record.
*/
- assert( u.am.avail>=0 );
- if( u.am.payloadSize <= (u32)u.am.avail ){
- u.am.zRec = u.am.zData;
- u.am.pC->aRow = (u8*)u.am.zData;
+ assert( u.an.avail>=0 );
+ if( u.an.payloadSize <= (u32)u.an.avail ){
+ u.an.zRec = u.an.zData;
+ u.an.pC->aRow = (u8*)u.an.zData;
}else{
- u.am.pC->aRow = 0;
+ u.an.pC->aRow = 0;
}
}
/* The following assert is true in all cases accept when
** the database file has been corrupted externally.
- ** assert( u.am.zRec!=0 || u.am.avail>=u.am.payloadSize || u.am.avail>=9 ); */
- u.am.szHdr = getVarint32((u8*)u.am.zData, u.am.offset);
+ ** assert( u.an.zRec!=0 || u.an.avail>=u.an.payloadSize || u.an.avail>=9 ); */
+ u.an.szHdr = getVarint32((u8*)u.an.zData, u.an.offset);
/* Make sure a corrupt database has not given us an oversize header.
** Do this now to avoid an oversize memory allocation.
@@ -62639,26 +67040,26 @@
** 3-byte type for each of the maximum of 32768 columns plus three
** extra bytes for the header length itself. 32768*3 + 3 = 98307.
*/
- if( u.am.offset > 98307 ){
+ if( u.an.offset > 98307 ){
rc = SQLITE_CORRUPT_BKPT;
goto op_column_out;
}
- /* Compute in u.am.len the number of bytes of data we need to read in order
- ** to get u.am.nField type values. u.am.offset is an upper bound on this. But
- ** u.am.nField might be significantly less than the true number of columns
- ** in the table, and in that case, 5*u.am.nField+3 might be smaller than u.am.offset.
- ** We want to minimize u.am.len in order to limit the size of the memory
- ** allocation, especially if a corrupt database file has caused u.am.offset
+ /* Compute in u.an.len the number of bytes of data we need to read in order
+ ** to get u.an.nField type values. u.an.offset is an upper bound on this. But
+ ** u.an.nField might be significantly less than the true number of columns
+ ** in the table, and in that case, 5*u.an.nField+3 might be smaller than u.an.offset.
+ ** We want to minimize u.an.len in order to limit the size of the memory
+ ** allocation, especially if a corrupt database file has caused u.an.offset
** to be oversized. Offset is limited to 98307 above. But 98307 might
** still exceed Robson memory allocation limits on some configurations.
- ** On systems that cannot tolerate large memory allocations, u.am.nField*5+3
- ** will likely be much smaller since u.am.nField will likely be less than
+ ** On systems that cannot tolerate large memory allocations, u.an.nField*5+3
+ ** will likely be much smaller since u.an.nField will likely be less than
** 20 or so. This insures that Robson memory allocation limits are
** not exceeded even for corrupt database files.
*/
- u.am.len = u.am.nField*5 + 3;
- if( u.am.len > (int)u.am.offset ) u.am.len = (int)u.am.offset;
+ u.an.len = u.an.nField*5 + 3;
+ if( u.an.len > (int)u.an.offset ) u.an.len = (int)u.an.offset;
/* The KeyFetch() or DataFetch() above are fast and will get the entire
** record header in most cases. But they will fail to get the complete
@@ -62666,45 +67067,51 @@
** in the B-Tree. When that happens, use sqlite3VdbeMemFromBtree() to
** acquire the complete header text.
*/
- if( !u.am.zRec && u.am.avail<u.am.len ){
- u.am.sMem.flags = 0;
- u.am.sMem.db = 0;
- rc = sqlite3VdbeMemFromBtree(u.am.pCrsr, 0, u.am.len, u.am.pC->isIndex, &u.am.sMem);
+ if( !u.an.zRec && u.an.avail<u.an.len ){
+ u.an.sMem.flags = 0;
+ u.an.sMem.db = 0;
+ rc = sqlite3VdbeMemFromBtree(u.an.pCrsr, 0, u.an.len, u.an.pC->isIndex, &u.an.sMem);
if( rc!=SQLITE_OK ){
goto op_column_out;
}
- u.am.zData = u.am.sMem.z;
+ u.an.zData = u.an.sMem.z;
}
- u.am.zEndHdr = (u8 *)&u.am.zData[u.am.len];
- u.am.zIdx = (u8 *)&u.am.zData[u.am.szHdr];
+ u.an.zEndHdr = (u8 *)&u.an.zData[u.an.len];
+ u.an.zIdx = (u8 *)&u.an.zData[u.an.szHdr];
- /* Scan the header and use it to fill in the u.am.aType[] and u.am.aOffset[]
- ** arrays. u.am.aType[u.am.i] will contain the type integer for the u.am.i-th
- ** column and u.am.aOffset[u.am.i] will contain the u.am.offset from the beginning
- ** of the record to the start of the data for the u.am.i-th column
+ /* Scan the header and use it to fill in the u.an.aType[] and u.an.aOffset[]
+ ** arrays. u.an.aType[u.an.i] will contain the type integer for the u.an.i-th
+ ** column and u.an.aOffset[u.an.i] will contain the u.an.offset from the beginning
+ ** of the record to the start of the data for the u.an.i-th column
*/
- for(u.am.i=0; u.am.i<u.am.nField; u.am.i++){
- if( u.am.zIdx<u.am.zEndHdr ){
- u.am.aOffset[u.am.i] = u.am.offset;
- u.am.zIdx += getVarint32(u.am.zIdx, u.am.aType[u.am.i]);
- u.am.szField = sqlite3VdbeSerialTypeLen(u.am.aType[u.am.i]);
- u.am.offset += u.am.szField;
- if( u.am.offset<u.am.szField ){ /* True if u.am.offset overflows */
- u.am.zIdx = &u.am.zEndHdr[1]; /* Forces SQLITE_CORRUPT return below */
+ for(u.an.i=0; u.an.i<u.an.nField; u.an.i++){
+ if( u.an.zIdx<u.an.zEndHdr ){
+ u.an.aOffset[u.an.i] = u.an.offset;
+ if( u.an.zIdx[0]<0x80 ){
+ u.an.t = u.an.zIdx[0];
+ u.an.zIdx++;
+ }else{
+ u.an.zIdx += sqlite3GetVarint32(u.an.zIdx, &u.an.t);
+ }
+ u.an.aType[u.an.i] = u.an.t;
+ u.an.szField = sqlite3VdbeSerialTypeLen(u.an.t);
+ u.an.offset += u.an.szField;
+ if( u.an.offset<u.an.szField ){ /* True if u.an.offset overflows */
+ u.an.zIdx = &u.an.zEndHdr[1]; /* Forces SQLITE_CORRUPT return below */
break;
}
}else{
- /* If u.am.i is less that u.am.nField, then there are less fields in this
+ /* If u.an.i is less that u.an.nField, then there are less fields in this
** record than SetNumColumns indicated there are columns in the
- ** table. Set the u.am.offset for any extra columns not present in
+ ** table. Set the u.an.offset for any extra columns not present in
** the record to 0. This tells code below to store a NULL
** instead of deserializing a value from the record.
*/
- u.am.aOffset[u.am.i] = 0;
+ u.an.aOffset[u.an.i] = 0;
}
}
- sqlite3VdbeMemRelease(&u.am.sMem);
- u.am.sMem.flags = MEM_Null;
+ sqlite3VdbeMemRelease(&u.an.sMem);
+ u.an.sMem.flags = MEM_Null;
/* If we have read more header data than was contained in the header,
** or if the end of the last field appears to be past the end of the
@@ -62712,63 +67119,63 @@
** of the record (when all fields present), then we must be dealing
** with a corrupt database.
*/
- if( (u.am.zIdx > u.am.zEndHdr) || (u.am.offset > u.am.payloadSize)
- || (u.am.zIdx==u.am.zEndHdr && u.am.offset!=u.am.payloadSize) ){
+ if( (u.an.zIdx > u.an.zEndHdr) || (u.an.offset > u.an.payloadSize)
+ || (u.an.zIdx==u.an.zEndHdr && u.an.offset!=u.an.payloadSize) ){
rc = SQLITE_CORRUPT_BKPT;
goto op_column_out;
}
}
- /* Get the column information. If u.am.aOffset[u.am.p2] is non-zero, then
- ** deserialize the value from the record. If u.am.aOffset[u.am.p2] is zero,
+ /* Get the column information. If u.an.aOffset[u.an.p2] is non-zero, then
+ ** deserialize the value from the record. If u.an.aOffset[u.an.p2] is zero,
** then there are not enough fields in the record to satisfy the
** request. In this case, set the value NULL or to P4 if P4 is
** a pointer to a Mem object.
*/
- if( u.am.aOffset[u.am.p2] ){
+ if( u.an.aOffset[u.an.p2] ){
assert( rc==SQLITE_OK );
- if( u.am.zRec ){
- sqlite3VdbeMemReleaseExternal(u.am.pDest);
- sqlite3VdbeSerialGet((u8 *)&u.am.zRec[u.am.aOffset[u.am.p2]], u.am.aType[u.am.p2], u.am.pDest);
+ if( u.an.zRec ){
+ VdbeMemRelease(u.an.pDest);
+ sqlite3VdbeSerialGet((u8 *)&u.an.zRec[u.an.aOffset[u.an.p2]], u.an.aType[u.an.p2], u.an.pDest);
}else{
- u.am.len = sqlite3VdbeSerialTypeLen(u.am.aType[u.am.p2]);
- sqlite3VdbeMemMove(&u.am.sMem, u.am.pDest);
- rc = sqlite3VdbeMemFromBtree(u.am.pCrsr, u.am.aOffset[u.am.p2], u.am.len, u.am.pC->isIndex, &u.am.sMem);
+ u.an.len = sqlite3VdbeSerialTypeLen(u.an.aType[u.an.p2]);
+ sqlite3VdbeMemMove(&u.an.sMem, u.an.pDest);
+ rc = sqlite3VdbeMemFromBtree(u.an.pCrsr, u.an.aOffset[u.an.p2], u.an.len, u.an.pC->isIndex, &u.an.sMem);
if( rc!=SQLITE_OK ){
goto op_column_out;
}
- u.am.zData = u.am.sMem.z;
- sqlite3VdbeSerialGet((u8*)u.am.zData, u.am.aType[u.am.p2], u.am.pDest);
+ u.an.zData = u.an.sMem.z;
+ sqlite3VdbeSerialGet((u8*)u.an.zData, u.an.aType[u.an.p2], u.an.pDest);
}
- u.am.pDest->enc = encoding;
+ u.an.pDest->enc = encoding;
}else{
if( pOp->p4type==P4_MEM ){
- sqlite3VdbeMemShallowCopy(u.am.pDest, pOp->p4.pMem, MEM_Static);
+ sqlite3VdbeMemShallowCopy(u.an.pDest, pOp->p4.pMem, MEM_Static);
}else{
- assert( u.am.pDest->flags&MEM_Null );
+ MemSetTypeFlag(u.an.pDest, MEM_Null);
}
}
/* If we dynamically allocated space to hold the data (in the
** sqlite3VdbeMemFromBtree() call above) then transfer control of that
- ** dynamically allocated space over to the u.am.pDest structure.
+ ** dynamically allocated space over to the u.an.pDest structure.
** This prevents a memory copy.
*/
- if( u.am.sMem.zMalloc ){
- assert( u.am.sMem.z==u.am.sMem.zMalloc );
- assert( !(u.am.pDest->flags & MEM_Dyn) );
- assert( !(u.am.pDest->flags & (MEM_Blob|MEM_Str)) || u.am.pDest->z==u.am.sMem.z );
- u.am.pDest->flags &= ~(MEM_Ephem|MEM_Static);
- u.am.pDest->flags |= MEM_Term;
- u.am.pDest->z = u.am.sMem.z;
- u.am.pDest->zMalloc = u.am.sMem.zMalloc;
+ if( u.an.sMem.zMalloc ){
+ assert( u.an.sMem.z==u.an.sMem.zMalloc );
+ assert( !(u.an.pDest->flags & MEM_Dyn) );
+ assert( !(u.an.pDest->flags & (MEM_Blob|MEM_Str)) || u.an.pDest->z==u.an.sMem.z );
+ u.an.pDest->flags &= ~(MEM_Ephem|MEM_Static);
+ u.an.pDest->flags |= MEM_Term;
+ u.an.pDest->z = u.an.sMem.z;
+ u.an.pDest->zMalloc = u.an.sMem.zMalloc;
}
- rc = sqlite3VdbeMemMakeWriteable(u.am.pDest);
+ rc = sqlite3VdbeMemMakeWriteable(u.an.pDest);
op_column_out:
- UPDATE_MAX_BLOBSIZE(u.am.pDest);
- REGISTER_TRACE(pOp->p3, u.am.pDest);
+ UPDATE_MAX_BLOBSIZE(u.an.pDest);
+ REGISTER_TRACE(pOp->p3, u.an.pDest);
break;
}
@@ -62781,20 +67188,20 @@
** memory cell in the range.
*/
case OP_Affinity: {
-#if 0 /* local variables moved into u.an */
+#if 0 /* local variables moved into u.ao */
const char *zAffinity; /* The affinity to be applied */
char cAff; /* A single character of affinity */
-#endif /* local variables moved into u.an */
+#endif /* local variables moved into u.ao */
- u.an.zAffinity = pOp->p4.z;
- assert( u.an.zAffinity!=0 );
- assert( u.an.zAffinity[pOp->p2]==0 );
+ u.ao.zAffinity = pOp->p4.z;
+ assert( u.ao.zAffinity!=0 );
+ assert( u.ao.zAffinity[pOp->p2]==0 );
pIn1 = &aMem[pOp->p1];
- while( (u.an.cAff = *(u.an.zAffinity++))!=0 ){
+ while( (u.ao.cAff = *(u.ao.zAffinity++))!=0 ){
assert( pIn1 <= &p->aMem[p->nMem] );
assert( memIsValid(pIn1) );
ExpandBlob(pIn1);
- applyAffinity(pIn1, u.an.cAff, encoding);
+ applyAffinity(pIn1, u.ao.cAff, encoding);
pIn1++;
}
break;
@@ -62816,7 +67223,7 @@
** If P4 is NULL then all index fields have the affinity NONE.
*/
case OP_MakeRecord: {
-#if 0 /* local variables moved into u.ao */
+#if 0 /* local variables moved into u.ap */
u8 *zNewRecord; /* A buffer to hold the data for the new record */
Mem *pRec; /* The new record */
u64 nData; /* Number of bytes of data space */
@@ -62832,7 +67239,7 @@
int file_format; /* File format to use for encoding */
int i; /* Space used in zNewRecord[] */
int len; /* Length of a field */
-#endif /* local variables moved into u.ao */
+#endif /* local variables moved into u.ap */
/* Assuming the record contains N fields, the record format looks
** like this:
@@ -62849,17 +67256,16 @@
** hdr-size field is also a varint which is the offset from the beginning
** of the record to data0.
*/
- u.ao.nData = 0; /* Number of bytes of data space */
- u.ao.nHdr = 0; /* Number of bytes of header space */
- u.ao.nByte = 0; /* Data space required for this record */
- u.ao.nZero = 0; /* Number of zero bytes at the end of the record */
- u.ao.nField = pOp->p1;
- u.ao.zAffinity = pOp->p4.z;
- assert( u.ao.nField>0 && pOp->p2>0 && pOp->p2+u.ao.nField<=p->nMem+1 );
- u.ao.pData0 = &aMem[u.ao.nField];
- u.ao.nField = pOp->p2;
- u.ao.pLast = &u.ao.pData0[u.ao.nField-1];
- u.ao.file_format = p->minWriteFileFormat;
+ u.ap.nData = 0; /* Number of bytes of data space */
+ u.ap.nHdr = 0; /* Number of bytes of header space */
+ u.ap.nZero = 0; /* Number of zero bytes at the end of the record */
+ u.ap.nField = pOp->p1;
+ u.ap.zAffinity = pOp->p4.z;
+ assert( u.ap.nField>0 && pOp->p2>0 && pOp->p2+u.ap.nField<=p->nMem+1 );
+ u.ap.pData0 = &aMem[u.ap.nField];
+ u.ap.nField = pOp->p2;
+ u.ap.pLast = &u.ap.pData0[u.ap.nField-1];
+ u.ap.file_format = p->minWriteFileFormat;
/* Identify the output register */
assert( pOp->p3<pOp->p1 || pOp->p3>=pOp->p1+pOp->p2 );
@@ -62869,34 +67275,34 @@
/* Loop through the elements that will make up the record to figure
** out how much space is required for the new record.
*/
- for(u.ao.pRec=u.ao.pData0; u.ao.pRec<=u.ao.pLast; u.ao.pRec++){
- assert( memIsValid(u.ao.pRec) );
- if( u.ao.zAffinity ){
- applyAffinity(u.ao.pRec, u.ao.zAffinity[u.ao.pRec-u.ao.pData0], encoding);
+ for(u.ap.pRec=u.ap.pData0; u.ap.pRec<=u.ap.pLast; u.ap.pRec++){
+ assert( memIsValid(u.ap.pRec) );
+ if( u.ap.zAffinity ){
+ applyAffinity(u.ap.pRec, u.ap.zAffinity[u.ap.pRec-u.ap.pData0], encoding);
}
- if( u.ao.pRec->flags&MEM_Zero && u.ao.pRec->n>0 ){
- sqlite3VdbeMemExpandBlob(u.ao.pRec);
+ if( u.ap.pRec->flags&MEM_Zero && u.ap.pRec->n>0 ){
+ sqlite3VdbeMemExpandBlob(u.ap.pRec);
}
- u.ao.serial_type = sqlite3VdbeSerialType(u.ao.pRec, u.ao.file_format);
- u.ao.len = sqlite3VdbeSerialTypeLen(u.ao.serial_type);
- u.ao.nData += u.ao.len;
- u.ao.nHdr += sqlite3VarintLen(u.ao.serial_type);
- if( u.ao.pRec->flags & MEM_Zero ){
+ u.ap.serial_type = sqlite3VdbeSerialType(u.ap.pRec, u.ap.file_format);
+ u.ap.len = sqlite3VdbeSerialTypeLen(u.ap.serial_type);
+ u.ap.nData += u.ap.len;
+ u.ap.nHdr += sqlite3VarintLen(u.ap.serial_type);
+ if( u.ap.pRec->flags & MEM_Zero ){
/* Only pure zero-filled BLOBs can be input to this Opcode.
** We do not allow blobs with a prefix and a zero-filled tail. */
- u.ao.nZero += u.ao.pRec->u.nZero;
- }else if( u.ao.len ){
- u.ao.nZero = 0;
+ u.ap.nZero += u.ap.pRec->u.nZero;
+ }else if( u.ap.len ){
+ u.ap.nZero = 0;
}
}
/* Add the initial header varint and total the size */
- u.ao.nHdr += u.ao.nVarint = sqlite3VarintLen(u.ao.nHdr);
- if( u.ao.nVarint<sqlite3VarintLen(u.ao.nHdr) ){
- u.ao.nHdr++;
+ u.ap.nHdr += u.ap.nVarint = sqlite3VarintLen(u.ap.nHdr);
+ if( u.ap.nVarint<sqlite3VarintLen(u.ap.nHdr) ){
+ u.ap.nHdr++;
}
- u.ao.nByte = u.ao.nHdr+u.ao.nData-u.ao.nZero;
- if( u.ao.nByte>db->aLimit[SQLITE_LIMIT_LENGTH] ){
+ u.ap.nByte = u.ap.nHdr+u.ap.nData-u.ap.nZero;
+ if( u.ap.nByte>db->aLimit[SQLITE_LIMIT_LENGTH] ){
goto too_big;
}
@@ -62905,28 +67311,28 @@
** be one of the input registers (because the following call to
** sqlite3VdbeMemGrow() could clobber the value before it is used).
*/
- if( sqlite3VdbeMemGrow(pOut, (int)u.ao.nByte, 0) ){
+ if( sqlite3VdbeMemGrow(pOut, (int)u.ap.nByte, 0) ){
goto no_mem;
}
- u.ao.zNewRecord = (u8 *)pOut->z;
+ u.ap.zNewRecord = (u8 *)pOut->z;
/* Write the record */
- u.ao.i = putVarint32(u.ao.zNewRecord, u.ao.nHdr);
- for(u.ao.pRec=u.ao.pData0; u.ao.pRec<=u.ao.pLast; u.ao.pRec++){
- u.ao.serial_type = sqlite3VdbeSerialType(u.ao.pRec, u.ao.file_format);
- u.ao.i += putVarint32(&u.ao.zNewRecord[u.ao.i], u.ao.serial_type); /* serial type */
+ u.ap.i = putVarint32(u.ap.zNewRecord, u.ap.nHdr);
+ for(u.ap.pRec=u.ap.pData0; u.ap.pRec<=u.ap.pLast; u.ap.pRec++){
+ u.ap.serial_type = sqlite3VdbeSerialType(u.ap.pRec, u.ap.file_format);
+ u.ap.i += putVarint32(&u.ap.zNewRecord[u.ap.i], u.ap.serial_type); /* serial type */
}
- for(u.ao.pRec=u.ao.pData0; u.ao.pRec<=u.ao.pLast; u.ao.pRec++){ /* serial data */
- u.ao.i += sqlite3VdbeSerialPut(&u.ao.zNewRecord[u.ao.i], (int)(u.ao.nByte-u.ao.i), u.ao.pRec,u.ao.file_format);
+ for(u.ap.pRec=u.ap.pData0; u.ap.pRec<=u.ap.pLast; u.ap.pRec++){ /* serial data */
+ u.ap.i += sqlite3VdbeSerialPut(&u.ap.zNewRecord[u.ap.i], (int)(u.ap.nByte-u.ap.i), u.ap.pRec,u.ap.file_format);
}
- assert( u.ao.i==u.ao.nByte );
+ assert( u.ap.i==u.ap.nByte );
assert( pOp->p3>0 && pOp->p3<=p->nMem );
- pOut->n = (int)u.ao.nByte;
+ pOut->n = (int)u.ap.nByte;
pOut->flags = MEM_Blob | MEM_Dyn;
pOut->xDel = 0;
- if( u.ao.nZero ){
- pOut->u.nZero = u.ao.nZero;
+ if( u.ap.nZero ){
+ pOut->u.nZero = u.ap.nZero;
pOut->flags |= MEM_Zero;
}
pOut->enc = SQLITE_UTF8; /* In case the blob is ever converted to text */
@@ -62942,18 +67348,18 @@
*/
#ifndef SQLITE_OMIT_BTREECOUNT
case OP_Count: { /* out2-prerelease */
-#if 0 /* local variables moved into u.ap */
+#if 0 /* local variables moved into u.aq */
i64 nEntry;
BtCursor *pCrsr;
-#endif /* local variables moved into u.ap */
+#endif /* local variables moved into u.aq */
- u.ap.pCrsr = p->apCsr[pOp->p1]->pCursor;
- if( u.ap.pCrsr ){
- rc = sqlite3BtreeCount(u.ap.pCrsr, &u.ap.nEntry);
+ u.aq.pCrsr = p->apCsr[pOp->p1]->pCursor;
+ if( ALWAYS(u.aq.pCrsr) ){
+ rc = sqlite3BtreeCount(u.aq.pCrsr, &u.aq.nEntry);
}else{
- u.ap.nEntry = 0;
+ u.aq.nEntry = 0;
}
- pOut->u.i = u.ap.nEntry;
+ pOut->u.i = u.aq.nEntry;
break;
}
#endif
@@ -62965,7 +67371,7 @@
** existing savepoint, P1==1, or to rollback an existing savepoint P1==2.
*/
case OP_Savepoint: {
-#if 0 /* local variables moved into u.aq */
+#if 0 /* local variables moved into u.ar */
int p1; /* Value of P1 operand */
char *zName; /* Name of savepoint */
int nName;
@@ -62974,20 +67380,20 @@
Savepoint *pTmp;
int iSavepoint;
int ii;
-#endif /* local variables moved into u.aq */
+#endif /* local variables moved into u.ar */
- u.aq.p1 = pOp->p1;
- u.aq.zName = pOp->p4.z;
+ u.ar.p1 = pOp->p1;
+ u.ar.zName = pOp->p4.z;
- /* Assert that the u.aq.p1 parameter is valid. Also that if there is no open
+ /* Assert that the u.ar.p1 parameter is valid. Also that if there is no open
** transaction, then there cannot be any savepoints.
*/
assert( db->pSavepoint==0 || db->autoCommit==0 );
- assert( u.aq.p1==SAVEPOINT_BEGIN||u.aq.p1==SAVEPOINT_RELEASE||u.aq.p1==SAVEPOINT_ROLLBACK );
+ assert( u.ar.p1==SAVEPOINT_BEGIN||u.ar.p1==SAVEPOINT_RELEASE||u.ar.p1==SAVEPOINT_ROLLBACK );
assert( db->pSavepoint || db->isTransactionSavepoint==0 );
assert( checkSavepointCount(db) );
- if( u.aq.p1==SAVEPOINT_BEGIN ){
+ if( u.ar.p1==SAVEPOINT_BEGIN ){
if( db->writeVdbeCnt>0 ){
/* A new savepoint cannot be created if there are active write
** statements (i.e. open read/write incremental blob handles).
@@ -62996,13 +67402,24 @@
"SQL statements in progress");
rc = SQLITE_BUSY;
}else{
- u.aq.nName = sqlite3Strlen30(u.aq.zName);
+ u.ar.nName = sqlite3Strlen30(u.ar.zName);
+
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+ /* This call is Ok even if this savepoint is actually a transaction
+ ** savepoint (and therefore should not prompt xSavepoint()) callbacks.
+ ** If this is a transaction savepoint being opened, it is guaranteed
+ ** that the db->aVTrans[] array is empty. */
+ assert( db->autoCommit==0 || db->nVTrans==0 );
+ rc = sqlite3VtabSavepoint(db, SAVEPOINT_BEGIN,
+ db->nStatement+db->nSavepoint);
+ if( rc!=SQLITE_OK ) goto abort_due_to_error;
+#endif
/* Create a new savepoint structure. */
- u.aq.pNew = sqlite3DbMallocRaw(db, sizeof(Savepoint)+u.aq.nName+1);
- if( u.aq.pNew ){
- u.aq.pNew->zName = (char *)&u.aq.pNew[1];
- memcpy(u.aq.pNew->zName, u.aq.zName, u.aq.nName+1);
+ u.ar.pNew = sqlite3DbMallocRaw(db, sizeof(Savepoint)+u.ar.nName+1);
+ if( u.ar.pNew ){
+ u.ar.pNew->zName = (char *)&u.ar.pNew[1];
+ memcpy(u.ar.pNew->zName, u.ar.zName, u.ar.nName+1);
/* If there is no open transaction, then mark this as a special
** "transaction savepoint". */
@@ -63014,28 +67431,28 @@
}
/* Link the new savepoint into the database handle's list. */
- u.aq.pNew->pNext = db->pSavepoint;
- db->pSavepoint = u.aq.pNew;
- u.aq.pNew->nDeferredCons = db->nDeferredCons;
+ u.ar.pNew->pNext = db->pSavepoint;
+ db->pSavepoint = u.ar.pNew;
+ u.ar.pNew->nDeferredCons = db->nDeferredCons;
}
}
}else{
- u.aq.iSavepoint = 0;
+ u.ar.iSavepoint = 0;
/* Find the named savepoint. If there is no such savepoint, then an
** an error is returned to the user. */
for(
- u.aq.pSavepoint = db->pSavepoint;
- u.aq.pSavepoint && sqlite3StrICmp(u.aq.pSavepoint->zName, u.aq.zName);
- u.aq.pSavepoint = u.aq.pSavepoint->pNext
+ u.ar.pSavepoint = db->pSavepoint;
+ u.ar.pSavepoint && sqlite3StrICmp(u.ar.pSavepoint->zName, u.ar.zName);
+ u.ar.pSavepoint = u.ar.pSavepoint->pNext
){
- u.aq.iSavepoint++;
+ u.ar.iSavepoint++;
}
- if( !u.aq.pSavepoint ){
- sqlite3SetString(&p->zErrMsg, db, "no such savepoint: %s", u.aq.zName);
+ if( !u.ar.pSavepoint ){
+ sqlite3SetString(&p->zErrMsg, db, "no such savepoint: %s", u.ar.zName);
rc = SQLITE_ERROR;
}else if(
- db->writeVdbeCnt>0 || (u.aq.p1==SAVEPOINT_ROLLBACK && db->activeVdbeCnt>1)
+ db->writeVdbeCnt>0 || (u.ar.p1==SAVEPOINT_ROLLBACK && db->activeVdbeCnt>1)
){
/* It is not possible to release (commit) a savepoint if there are
** active write statements. It is not possible to rollback a savepoint
@@ -63043,7 +67460,7 @@
*/
sqlite3SetString(&p->zErrMsg, db,
"cannot %s savepoint - SQL statements in progress",
- (u.aq.p1==SAVEPOINT_ROLLBACK ? "rollback": "release")
+ (u.ar.p1==SAVEPOINT_ROLLBACK ? "rollback": "release")
);
rc = SQLITE_BUSY;
}else{
@@ -63052,8 +67469,8 @@
** and this is a RELEASE command, then the current transaction
** is committed.
*/
- int isTransaction = u.aq.pSavepoint->pNext==0 && db->isTransactionSavepoint;
- if( isTransaction && u.aq.p1==SAVEPOINT_RELEASE ){
+ int isTransaction = u.ar.pSavepoint->pNext==0 && db->isTransactionSavepoint;
+ if( isTransaction && u.ar.p1==SAVEPOINT_RELEASE ){
if( (rc = sqlite3VdbeCheckFk(p, 1))!=SQLITE_OK ){
goto vdbe_return;
}
@@ -63067,26 +67484,26 @@
db->isTransactionSavepoint = 0;
rc = p->rc;
}else{
- u.aq.iSavepoint = db->nSavepoint - u.aq.iSavepoint - 1;
- for(u.aq.ii=0; u.aq.ii<db->nDb; u.aq.ii++){
- rc = sqlite3BtreeSavepoint(db->aDb[u.aq.ii].pBt, u.aq.p1, u.aq.iSavepoint);
+ u.ar.iSavepoint = db->nSavepoint - u.ar.iSavepoint - 1;
+ for(u.ar.ii=0; u.ar.ii<db->nDb; u.ar.ii++){
+ rc = sqlite3BtreeSavepoint(db->aDb[u.ar.ii].pBt, u.ar.p1, u.ar.iSavepoint);
if( rc!=SQLITE_OK ){
goto abort_due_to_error;
}
}
- if( u.aq.p1==SAVEPOINT_ROLLBACK && (db->flags&SQLITE_InternChanges)!=0 ){
+ if( u.ar.p1==SAVEPOINT_ROLLBACK && (db->flags&SQLITE_InternChanges)!=0 ){
sqlite3ExpirePreparedStatements(db);
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
db->flags = (db->flags | SQLITE_InternChanges);
}
}
/* Regardless of whether this is a RELEASE or ROLLBACK, destroy all
** savepoints nested inside of the savepoint being operated on. */
- while( db->pSavepoint!=u.aq.pSavepoint ){
- u.aq.pTmp = db->pSavepoint;
- db->pSavepoint = u.aq.pTmp->pNext;
- sqlite3DbFree(db, u.aq.pTmp);
+ while( db->pSavepoint!=u.ar.pSavepoint ){
+ u.ar.pTmp = db->pSavepoint;
+ db->pSavepoint = u.ar.pTmp->pNext;
+ sqlite3DbFree(db, u.ar.pTmp);
db->nSavepoint--;
}
@@ -63094,15 +67511,20 @@
** too. If it is a ROLLBACK TO, then set the number of deferred
** constraint violations present in the database to the value stored
** when the savepoint was created. */
- if( u.aq.p1==SAVEPOINT_RELEASE ){
- assert( u.aq.pSavepoint==db->pSavepoint );
- db->pSavepoint = u.aq.pSavepoint->pNext;
- sqlite3DbFree(db, u.aq.pSavepoint);
+ if( u.ar.p1==SAVEPOINT_RELEASE ){
+ assert( u.ar.pSavepoint==db->pSavepoint );
+ db->pSavepoint = u.ar.pSavepoint->pNext;
+ sqlite3DbFree(db, u.ar.pSavepoint);
if( !isTransaction ){
db->nSavepoint--;
}
}else{
- db->nDeferredCons = u.aq.pSavepoint->nDeferredCons;
+ db->nDeferredCons = u.ar.pSavepoint->nDeferredCons;
+ }
+
+ if( !isTransaction ){
+ rc = sqlite3VtabSavepoint(db, u.ar.p1, u.ar.iSavepoint);
+ if( rc!=SQLITE_OK ) goto abort_due_to_error;
}
}
}
@@ -63120,20 +67542,20 @@
** This instruction causes the VM to halt.
*/
case OP_AutoCommit: {
-#if 0 /* local variables moved into u.ar */
+#if 0 /* local variables moved into u.as */
int desiredAutoCommit;
int iRollback;
int turnOnAC;
-#endif /* local variables moved into u.ar */
+#endif /* local variables moved into u.as */
- u.ar.desiredAutoCommit = pOp->p1;
- u.ar.iRollback = pOp->p2;
- u.ar.turnOnAC = u.ar.desiredAutoCommit && !db->autoCommit;
- assert( u.ar.desiredAutoCommit==1 || u.ar.desiredAutoCommit==0 );
- assert( u.ar.desiredAutoCommit==1 || u.ar.iRollback==0 );
+ u.as.desiredAutoCommit = pOp->p1;
+ u.as.iRollback = pOp->p2;
+ u.as.turnOnAC = u.as.desiredAutoCommit && !db->autoCommit;
+ assert( u.as.desiredAutoCommit==1 || u.as.desiredAutoCommit==0 );
+ assert( u.as.desiredAutoCommit==1 || u.as.iRollback==0 );
assert( db->activeVdbeCnt>0 ); /* At least this one VM is active */
- if( u.ar.turnOnAC && u.ar.iRollback && db->activeVdbeCnt>1 ){
+ if( u.as.turnOnAC && u.as.iRollback && db->activeVdbeCnt>1 ){
/* If this instruction implements a ROLLBACK and other VMs are
** still running, and a transaction is active, return an error indicating
** that the other VMs must complete first.
@@ -63141,25 +67563,25 @@
sqlite3SetString(&p->zErrMsg, db, "cannot rollback transaction - "
"SQL statements in progress");
rc = SQLITE_BUSY;
- }else if( u.ar.turnOnAC && !u.ar.iRollback && db->writeVdbeCnt>0 ){
+ }else if( u.as.turnOnAC && !u.as.iRollback && db->writeVdbeCnt>0 ){
/* If this instruction implements a COMMIT and other VMs are writing
** return an error indicating that the other VMs must complete first.
*/
sqlite3SetString(&p->zErrMsg, db, "cannot commit transaction - "
"SQL statements in progress");
rc = SQLITE_BUSY;
- }else if( u.ar.desiredAutoCommit!=db->autoCommit ){
- if( u.ar.iRollback ){
- assert( u.ar.desiredAutoCommit==1 );
+ }else if( u.as.desiredAutoCommit!=db->autoCommit ){
+ if( u.as.iRollback ){
+ assert( u.as.desiredAutoCommit==1 );
sqlite3RollbackAll(db);
db->autoCommit = 1;
}else if( (rc = sqlite3VdbeCheckFk(p, 1))!=SQLITE_OK ){
goto vdbe_return;
}else{
- db->autoCommit = (u8)u.ar.desiredAutoCommit;
+ db->autoCommit = (u8)u.as.desiredAutoCommit;
if( sqlite3VdbeHalt(p)==SQLITE_BUSY ){
p->pc = pc;
- db->autoCommit = (u8)(1-u.ar.desiredAutoCommit);
+ db->autoCommit = (u8)(1-u.as.desiredAutoCommit);
p->rc = rc = SQLITE_BUSY;
goto vdbe_return;
}
@@ -63174,8 +67596,8 @@
goto vdbe_return;
}else{
sqlite3SetString(&p->zErrMsg, db,
- (!u.ar.desiredAutoCommit)?"cannot start a transaction within a transaction":(
- (u.ar.iRollback)?"cannot rollback - no transaction is active":
+ (!u.as.desiredAutoCommit)?"cannot start a transaction within a transaction":(
+ (u.as.iRollback)?"cannot rollback - no transaction is active":
"cannot commit - no transaction is active"));
rc = SQLITE_ERROR;
@@ -63215,16 +67637,16 @@
** If P2 is zero, then a read-lock is obtained on the database file.
*/
case OP_Transaction: {
-#if 0 /* local variables moved into u.as */
+#if 0 /* local variables moved into u.at */
Btree *pBt;
-#endif /* local variables moved into u.as */
+#endif /* local variables moved into u.at */
assert( pOp->p1>=0 && pOp->p1<db->nDb );
- assert( (p->btreeMask & (1<<pOp->p1))!=0 );
- u.as.pBt = db->aDb[pOp->p1].pBt;
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
+ u.at.pBt = db->aDb[pOp->p1].pBt;
- if( u.as.pBt ){
- rc = sqlite3BtreeBeginTrans(u.as.pBt, pOp->p2);
+ if( u.at.pBt ){
+ rc = sqlite3BtreeBeginTrans(u.at.pBt, pOp->p2);
if( rc==SQLITE_BUSY ){
p->pc = pc;
p->rc = rc = SQLITE_BUSY;
@@ -63237,13 +67659,17 @@
if( pOp->p2 && p->usesStmtJournal
&& (db->autoCommit==0 || db->activeVdbeCnt>1)
){
- assert( sqlite3BtreeIsInTrans(u.as.pBt) );
+ assert( sqlite3BtreeIsInTrans(u.at.pBt) );
if( p->iStatement==0 ){
assert( db->nStatement>=0 && db->nSavepoint>=0 );
db->nStatement++;
p->iStatement = db->nSavepoint + db->nStatement;
}
- rc = sqlite3BtreeBeginStmt(u.as.pBt, p->iStatement);
+
+ rc = sqlite3VtabSavepoint(db, SAVEPOINT_BEGIN, p->iStatement-1);
+ if( rc==SQLITE_OK ){
+ rc = sqlite3BtreeBeginStmt(u.at.pBt, p->iStatement);
+ }
/* Store the current value of the database handles deferred constraint
** counter. If the statement transaction needs to be rolled back,
@@ -63267,21 +67693,21 @@
** executing this instruction.
*/
case OP_ReadCookie: { /* out2-prerelease */
-#if 0 /* local variables moved into u.at */
+#if 0 /* local variables moved into u.au */
int iMeta;
int iDb;
int iCookie;
-#endif /* local variables moved into u.at */
+#endif /* local variables moved into u.au */
- u.at.iDb = pOp->p1;
- u.at.iCookie = pOp->p3;
+ u.au.iDb = pOp->p1;
+ u.au.iCookie = pOp->p3;
assert( pOp->p3<SQLITE_N_BTREE_META );
- assert( u.at.iDb>=0 && u.at.iDb<db->nDb );
- assert( db->aDb[u.at.iDb].pBt!=0 );
- assert( (p->btreeMask & (1<<u.at.iDb))!=0 );
+ assert( u.au.iDb>=0 && u.au.iDb<db->nDb );
+ assert( db->aDb[u.au.iDb].pBt!=0 );
+ assert( (p->btreeMask & (((yDbMask)1)<<u.au.iDb))!=0 );
- sqlite3BtreeGetMeta(db->aDb[u.at.iDb].pBt, u.at.iCookie, (u32 *)&u.at.iMeta);
- pOut->u.i = u.at.iMeta;
+ sqlite3BtreeGetMeta(db->aDb[u.au.iDb].pBt, u.au.iCookie, (u32 *)&u.au.iMeta);
+ pOut->u.i = u.au.iMeta;
break;
}
@@ -63296,25 +67722,26 @@
** A transaction must be started before executing this opcode.
*/
case OP_SetCookie: { /* in3 */
-#if 0 /* local variables moved into u.au */
+#if 0 /* local variables moved into u.av */
Db *pDb;
-#endif /* local variables moved into u.au */
+#endif /* local variables moved into u.av */
assert( pOp->p2<SQLITE_N_BTREE_META );
assert( pOp->p1>=0 && pOp->p1<db->nDb );
- assert( (p->btreeMask & (1<<pOp->p1))!=0 );
- u.au.pDb = &db->aDb[pOp->p1];
- assert( u.au.pDb->pBt!=0 );
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
+ u.av.pDb = &db->aDb[pOp->p1];
+ assert( u.av.pDb->pBt!=0 );
+ assert( sqlite3SchemaMutexHeld(db, pOp->p1, 0) );
pIn3 = &aMem[pOp->p3];
sqlite3VdbeMemIntegerify(pIn3);
/* See note about index shifting on OP_ReadCookie */
- rc = sqlite3BtreeUpdateMeta(u.au.pDb->pBt, pOp->p2, (int)pIn3->u.i);
+ rc = sqlite3BtreeUpdateMeta(u.av.pDb->pBt, pOp->p2, (int)pIn3->u.i);
if( pOp->p2==BTREE_SCHEMA_VERSION ){
/* When the schema cookie changes, record the new cookie internally */
- u.au.pDb->pSchema->schema_cookie = (int)pIn3->u.i;
+ u.av.pDb->pSchema->schema_cookie = (int)pIn3->u.i;
db->flags |= SQLITE_InternChanges;
}else if( pOp->p2==BTREE_FILE_FORMAT ){
/* Record changes in the file format */
- u.au.pDb->pSchema->file_format = (u8)pIn3->u.i;
+ u.av.pDb->pSchema->file_format = (u8)pIn3->u.i;
}
if( pOp->p1==1 ){
/* Invalidate all prepared statements whenever the TEMP database
@@ -63325,10 +67752,12 @@
break;
}
-/* Opcode: VerifyCookie P1 P2 *
+/* Opcode: VerifyCookie P1 P2 P3 * *
**
** Check the value of global database parameter number 0 (the
-** schema version) and make sure it is equal to P2.
+** schema version) and make sure it is equal to P2 and that the
+** generation counter on the local schema parse equals P3.
+**
** P1 is the database number which is 0 for the main database file
** and 1 for the file holding temporary tables and some higher number
** for auxiliary databases.
@@ -63342,19 +67771,23 @@
** invoked.
*/
case OP_VerifyCookie: {
-#if 0 /* local variables moved into u.av */
+#if 0 /* local variables moved into u.aw */
int iMeta;
+ int iGen;
Btree *pBt;
-#endif /* local variables moved into u.av */
+#endif /* local variables moved into u.aw */
+
assert( pOp->p1>=0 && pOp->p1<db->nDb );
- assert( (p->btreeMask & (1<<pOp->p1))!=0 );
- u.av.pBt = db->aDb[pOp->p1].pBt;
- if( u.av.pBt ){
- sqlite3BtreeGetMeta(u.av.pBt, BTREE_SCHEMA_VERSION, (u32 *)&u.av.iMeta);
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
+ assert( sqlite3SchemaMutexHeld(db, pOp->p1, 0) );
+ u.aw.pBt = db->aDb[pOp->p1].pBt;
+ if( u.aw.pBt ){
+ sqlite3BtreeGetMeta(u.aw.pBt, BTREE_SCHEMA_VERSION, (u32 *)&u.aw.iMeta);
+ u.aw.iGen = db->aDb[pOp->p1].pSchema->iGeneration;
}else{
- u.av.iMeta = 0;
+ u.aw.iGen = u.aw.iMeta = 0;
}
- if( u.av.iMeta!=pOp->p2 ){
+ if( u.aw.iMeta!=pOp->p2 || u.aw.iGen!=pOp->p3 ){
sqlite3DbFree(db, p->zErrMsg);
p->zErrMsg = sqlite3DbStrDup(db, "database schema has changed");
/* If the schema-cookie from the database file matches the cookie
@@ -63370,11 +67803,11 @@
** to be invalidated whenever sqlite3_step() is called from within
** a v-table method.
*/
- if( db->aDb[pOp->p1].pSchema->schema_cookie!=u.av.iMeta ){
+ if( db->aDb[pOp->p1].pSchema->schema_cookie!=u.aw.iMeta ){
sqlite3ResetInternalSchema(db, pOp->p1);
}
- sqlite3ExpirePreparedStatements(db);
+ p->expired = 1;
rc = SQLITE_SCHEMA;
}
break;
@@ -63431,7 +67864,7 @@
*/
case OP_OpenRead:
case OP_OpenWrite: {
-#if 0 /* local variables moved into u.aw */
+#if 0 /* local variables moved into u.ax */
int nField;
KeyInfo *pKeyInfo;
int p2;
@@ -63440,82 +67873,77 @@
Btree *pX;
VdbeCursor *pCur;
Db *pDb;
-#endif /* local variables moved into u.aw */
+#endif /* local variables moved into u.ax */
if( p->expired ){
rc = SQLITE_ABORT;
break;
}
- u.aw.nField = 0;
- u.aw.pKeyInfo = 0;
- u.aw.p2 = pOp->p2;
- u.aw.iDb = pOp->p3;
- assert( u.aw.iDb>=0 && u.aw.iDb<db->nDb );
- assert( (p->btreeMask & (1<<u.aw.iDb))!=0 );
- u.aw.pDb = &db->aDb[u.aw.iDb];
- u.aw.pX = u.aw.pDb->pBt;
- assert( u.aw.pX!=0 );
+ u.ax.nField = 0;
+ u.ax.pKeyInfo = 0;
+ u.ax.p2 = pOp->p2;
+ u.ax.iDb = pOp->p3;
+ assert( u.ax.iDb>=0 && u.ax.iDb<db->nDb );
+ assert( (p->btreeMask & (((yDbMask)1)<<u.ax.iDb))!=0 );
+ u.ax.pDb = &db->aDb[u.ax.iDb];
+ u.ax.pX = u.ax.pDb->pBt;
+ assert( u.ax.pX!=0 );
if( pOp->opcode==OP_OpenWrite ){
- u.aw.wrFlag = 1;
- if( u.aw.pDb->pSchema->file_format < p->minWriteFileFormat ){
- p->minWriteFileFormat = u.aw.pDb->pSchema->file_format;
+ u.ax.wrFlag = 1;
+ assert( sqlite3SchemaMutexHeld(db, u.ax.iDb, 0) );
+ if( u.ax.pDb->pSchema->file_format < p->minWriteFileFormat ){
+ p->minWriteFileFormat = u.ax.pDb->pSchema->file_format;
}
}else{
- u.aw.wrFlag = 0;
+ u.ax.wrFlag = 0;
}
if( pOp->p5 ){
- assert( u.aw.p2>0 );
- assert( u.aw.p2<=p->nMem );
- pIn2 = &aMem[u.aw.p2];
+ assert( u.ax.p2>0 );
+ assert( u.ax.p2<=p->nMem );
+ pIn2 = &aMem[u.ax.p2];
assert( memIsValid(pIn2) );
assert( (pIn2->flags & MEM_Int)!=0 );
sqlite3VdbeMemIntegerify(pIn2);
- u.aw.p2 = (int)pIn2->u.i;
- /* The u.aw.p2 value always comes from a prior OP_CreateTable opcode and
- ** that opcode will always set the u.aw.p2 value to 2 or more or else fail.
+ u.ax.p2 = (int)pIn2->u.i;
+ /* The u.ax.p2 value always comes from a prior OP_CreateTable opcode and
+ ** that opcode will always set the u.ax.p2 value to 2 or more or else fail.
** If there were a failure, the prepared statement would have halted
** before reaching this instruction. */
- if( NEVER(u.aw.p2<2) ) {
+ if( NEVER(u.ax.p2<2) ) {
rc = SQLITE_CORRUPT_BKPT;
goto abort_due_to_error;
}
}
if( pOp->p4type==P4_KEYINFO ){
- u.aw.pKeyInfo = pOp->p4.pKeyInfo;
- u.aw.pKeyInfo->enc = ENC(p->db);
- u.aw.nField = u.aw.pKeyInfo->nField+1;
+ u.ax.pKeyInfo = pOp->p4.pKeyInfo;
+ u.ax.pKeyInfo->enc = ENC(p->db);
+ u.ax.nField = u.ax.pKeyInfo->nField+1;
}else if( pOp->p4type==P4_INT32 ){
- u.aw.nField = pOp->p4.i;
+ u.ax.nField = pOp->p4.i;
}
assert( pOp->p1>=0 );
- u.aw.pCur = allocateCursor(p, pOp->p1, u.aw.nField, u.aw.iDb, 1);
- if( u.aw.pCur==0 ) goto no_mem;
- u.aw.pCur->nullRow = 1;
- u.aw.pCur->isOrdered = 1;
- rc = sqlite3BtreeCursor(u.aw.pX, u.aw.p2, u.aw.wrFlag, u.aw.pKeyInfo, u.aw.pCur->pCursor);
- u.aw.pCur->pKeyInfo = u.aw.pKeyInfo;
+ u.ax.pCur = allocateCursor(p, pOp->p1, u.ax.nField, u.ax.iDb, 1);
+ if( u.ax.pCur==0 ) goto no_mem;
+ u.ax.pCur->nullRow = 1;
+ u.ax.pCur->isOrdered = 1;
+ rc = sqlite3BtreeCursor(u.ax.pX, u.ax.p2, u.ax.wrFlag, u.ax.pKeyInfo, u.ax.pCur->pCursor);
+ u.ax.pCur->pKeyInfo = u.ax.pKeyInfo;
- /* Since it performs no memory allocation or IO, the only values that
- ** sqlite3BtreeCursor() may return are SQLITE_EMPTY and SQLITE_OK.
- ** SQLITE_EMPTY is only returned when attempting to open the table
- ** rooted at page 1 of a zero-byte database. */
- assert( rc==SQLITE_EMPTY || rc==SQLITE_OK );
- if( rc==SQLITE_EMPTY ){
- u.aw.pCur->pCursor = 0;
- rc = SQLITE_OK;
- }
+ /* Since it performs no memory allocation or IO, the only value that
+ ** sqlite3BtreeCursor() may return is SQLITE_OK. */
+ assert( rc==SQLITE_OK );
/* Set the VdbeCursor.isTable and isIndex variables. Previous versions of
** SQLite used to check if the root-page flags were sane at this point
** and report database corruption if they were not, but this check has
** since moved into the btree layer. */
- u.aw.pCur->isTable = pOp->p4type!=P4_KEYINFO;
- u.aw.pCur->isIndex = !u.aw.pCur->isTable;
+ u.ax.pCur->isTable = pOp->p4type!=P4_KEYINFO;
+ u.ax.pCur->isIndex = !u.ax.pCur->isTable;
break;
}
-/* Opcode: OpenEphemeral P1 P2 * P4 *
+/* Opcode: OpenEphemeral P1 P2 * P4 P5
**
** Open a new cursor P1 to a transient table.
** The cursor is always opened read/write even if
@@ -63532,6 +67960,11 @@
** to a TEMP table at the SQL level, or to a table opened by
** this opcode. Then this opcode was call OpenVirtual. But
** that created confusion with the whole virtual-table idea.
+**
+** The P5 parameter can be a mask of the BTREE_* flags defined
+** in btree.h. These flags control aspects of the operation of
+** the btree. The BTREE_OMIT_JOURNAL and BTREE_SINGLE flags are
+** added automatically.
*/
/* Opcode: OpenAutoindex P1 P2 * P4 *
**
@@ -63542,9 +67975,9 @@
*/
case OP_OpenAutoindex:
case OP_OpenEphemeral: {
-#if 0 /* local variables moved into u.ax */
+#if 0 /* local variables moved into u.ay */
VdbeCursor *pCx;
-#endif /* local variables moved into u.ax */
+#endif /* local variables moved into u.ay */
static const int vfsFlags =
SQLITE_OPEN_READWRITE |
SQLITE_OPEN_CREATE |
@@ -63553,13 +67986,13 @@
SQLITE_OPEN_TRANSIENT_DB;
assert( pOp->p1>=0 );
- u.ax.pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, 1);
- if( u.ax.pCx==0 ) goto no_mem;
- u.ax.pCx->nullRow = 1;
- rc = sqlite3BtreeOpen(0, db, &u.ax.pCx->pBt,
+ u.ay.pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, 1);
+ if( u.ay.pCx==0 ) goto no_mem;
+ u.ay.pCx->nullRow = 1;
+ rc = sqlite3BtreeOpen(db->pVfs, 0, db, &u.ay.pCx->pBt,
BTREE_OMIT_JOURNAL | BTREE_SINGLE | pOp->p5, vfsFlags);
if( rc==SQLITE_OK ){
- rc = sqlite3BtreeBeginTrans(u.ax.pCx->pBt, 1);
+ rc = sqlite3BtreeBeginTrans(u.ay.pCx->pBt, 1);
}
if( rc==SQLITE_OK ){
/* If a transient index is required, create it by calling
@@ -63570,22 +68003,46 @@
if( pOp->p4.pKeyInfo ){
int pgno;
assert( pOp->p4type==P4_KEYINFO );
- rc = sqlite3BtreeCreateTable(u.ax.pCx->pBt, &pgno, BTREE_BLOBKEY);
+ rc = sqlite3BtreeCreateTable(u.ay.pCx->pBt, &pgno, BTREE_BLOBKEY | pOp->p5);
if( rc==SQLITE_OK ){
assert( pgno==MASTER_ROOT+1 );
- rc = sqlite3BtreeCursor(u.ax.pCx->pBt, pgno, 1,
- (KeyInfo*)pOp->p4.z, u.ax.pCx->pCursor);
- u.ax.pCx->pKeyInfo = pOp->p4.pKeyInfo;
- u.ax.pCx->pKeyInfo->enc = ENC(p->db);
+ rc = sqlite3BtreeCursor(u.ay.pCx->pBt, pgno, 1,
+ (KeyInfo*)pOp->p4.z, u.ay.pCx->pCursor);
+ u.ay.pCx->pKeyInfo = pOp->p4.pKeyInfo;
+ u.ay.pCx->pKeyInfo->enc = ENC(p->db);
}
- u.ax.pCx->isTable = 0;
+ u.ay.pCx->isTable = 0;
}else{
- rc = sqlite3BtreeCursor(u.ax.pCx->pBt, MASTER_ROOT, 1, 0, u.ax.pCx->pCursor);
- u.ax.pCx->isTable = 1;
+ rc = sqlite3BtreeCursor(u.ay.pCx->pBt, MASTER_ROOT, 1, 0, u.ay.pCx->pCursor);
+ u.ay.pCx->isTable = 1;
}
}
- u.ax.pCx->isOrdered = (pOp->p5!=BTREE_UNORDERED);
- u.ax.pCx->isIndex = !u.ax.pCx->isTable;
+ u.ay.pCx->isOrdered = (pOp->p5!=BTREE_UNORDERED);
+ u.ay.pCx->isIndex = !u.ay.pCx->isTable;
+ break;
+}
+
+/* Opcode: OpenSorter P1 P2 * P4 *
+**
+** This opcode works like OP_OpenEphemeral except that it opens
+** a transient index that is specifically designed to sort large
+** tables using an external merge-sort algorithm.
+*/
+case OP_SorterOpen: {
+#if 0 /* local variables moved into u.az */
+ VdbeCursor *pCx;
+#endif /* local variables moved into u.az */
+#ifndef SQLITE_OMIT_MERGE_SORT
+ u.az.pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, 1);
+ if( u.az.pCx==0 ) goto no_mem;
+ u.az.pCx->pKeyInfo = pOp->p4.pKeyInfo;
+ u.az.pCx->pKeyInfo->enc = ENC(p->db);
+ u.az.pCx->isSorter = 1;
+ rc = sqlite3VdbeSorterInit(db, u.az.pCx);
+#else
+ pOp->opcode = OP_OpenEphemeral;
+ pc--;
+#endif
break;
}
@@ -63605,17 +68062,17 @@
** the pseudo-table.
*/
case OP_OpenPseudo: {
-#if 0 /* local variables moved into u.ay */
+#if 0 /* local variables moved into u.ba */
VdbeCursor *pCx;
-#endif /* local variables moved into u.ay */
+#endif /* local variables moved into u.ba */
assert( pOp->p1>=0 );
- u.ay.pCx = allocateCursor(p, pOp->p1, pOp->p3, -1, 0);
- if( u.ay.pCx==0 ) goto no_mem;
- u.ay.pCx->nullRow = 1;
- u.ay.pCx->pseudoTableReg = pOp->p2;
- u.ay.pCx->isTable = 1;
- u.ay.pCx->isIndex = 0;
+ u.ba.pCx = allocateCursor(p, pOp->p1, pOp->p3, -1, 0);
+ if( u.ba.pCx==0 ) goto no_mem;
+ u.ba.pCx->nullRow = 1;
+ u.ba.pCx->pseudoTableReg = pOp->p2;
+ u.ba.pCx->isTable = 1;
+ u.ba.pCx->isIndex = 0;
break;
}
@@ -63687,35 +68144,35 @@
case OP_SeekLe: /* jump, in3 */
case OP_SeekGe: /* jump, in3 */
case OP_SeekGt: { /* jump, in3 */
-#if 0 /* local variables moved into u.az */
+#if 0 /* local variables moved into u.bb */
int res;
int oc;
VdbeCursor *pC;
UnpackedRecord r;
int nField;
i64 iKey; /* The rowid we are to seek to */
-#endif /* local variables moved into u.az */
+#endif /* local variables moved into u.bb */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
assert( pOp->p2!=0 );
- u.az.pC = p->apCsr[pOp->p1];
- assert( u.az.pC!=0 );
- assert( u.az.pC->pseudoTableReg==0 );
+ u.bb.pC = p->apCsr[pOp->p1];
+ assert( u.bb.pC!=0 );
+ assert( u.bb.pC->pseudoTableReg==0 );
assert( OP_SeekLe == OP_SeekLt+1 );
assert( OP_SeekGe == OP_SeekLt+2 );
assert( OP_SeekGt == OP_SeekLt+3 );
- assert( u.az.pC->isOrdered );
- if( u.az.pC->pCursor!=0 ){
- u.az.oc = pOp->opcode;
- u.az.pC->nullRow = 0;
- if( u.az.pC->isTable ){
+ assert( u.bb.pC->isOrdered );
+ if( ALWAYS(u.bb.pC->pCursor!=0) ){
+ u.bb.oc = pOp->opcode;
+ u.bb.pC->nullRow = 0;
+ if( u.bb.pC->isTable ){
/* The input value in P3 might be of any type: integer, real, string,
** blob, or NULL. But it needs to be an integer before we can do
** the seek, so covert it. */
pIn3 = &aMem[pOp->p3];
applyNumericAffinity(pIn3);
- u.az.iKey = sqlite3VdbeIntValue(pIn3);
- u.az.pC->rowidIsValid = 0;
+ u.bb.iKey = sqlite3VdbeIntValue(pIn3);
+ u.bb.pC->rowidIsValid = 0;
/* If the P3 value could not be converted into an integer without
** loss of information, then special processing is required... */
@@ -63730,101 +68187,101 @@
** point number. */
assert( (pIn3->flags & MEM_Real)!=0 );
- if( u.az.iKey==SMALLEST_INT64 && (pIn3->r<(double)u.az.iKey || pIn3->r>0) ){
+ if( u.bb.iKey==SMALLEST_INT64 && (pIn3->r<(double)u.bb.iKey || pIn3->r>0) ){
/* The P3 value is too large in magnitude to be expressed as an
** integer. */
- u.az.res = 1;
+ u.bb.res = 1;
if( pIn3->r<0 ){
- if( u.az.oc>=OP_SeekGe ){ assert( u.az.oc==OP_SeekGe || u.az.oc==OP_SeekGt );
- rc = sqlite3BtreeFirst(u.az.pC->pCursor, &u.az.res);
+ if( u.bb.oc>=OP_SeekGe ){ assert( u.bb.oc==OP_SeekGe || u.bb.oc==OP_SeekGt );
+ rc = sqlite3BtreeFirst(u.bb.pC->pCursor, &u.bb.res);
if( rc!=SQLITE_OK ) goto abort_due_to_error;
}
}else{
- if( u.az.oc<=OP_SeekLe ){ assert( u.az.oc==OP_SeekLt || u.az.oc==OP_SeekLe );
- rc = sqlite3BtreeLast(u.az.pC->pCursor, &u.az.res);
+ if( u.bb.oc<=OP_SeekLe ){ assert( u.bb.oc==OP_SeekLt || u.bb.oc==OP_SeekLe );
+ rc = sqlite3BtreeLast(u.bb.pC->pCursor, &u.bb.res);
if( rc!=SQLITE_OK ) goto abort_due_to_error;
}
}
- if( u.az.res ){
+ if( u.bb.res ){
pc = pOp->p2 - 1;
}
break;
- }else if( u.az.oc==OP_SeekLt || u.az.oc==OP_SeekGe ){
+ }else if( u.bb.oc==OP_SeekLt || u.bb.oc==OP_SeekGe ){
/* Use the ceiling() function to convert real->int */
- if( pIn3->r > (double)u.az.iKey ) u.az.iKey++;
+ if( pIn3->r > (double)u.bb.iKey ) u.bb.iKey++;
}else{
/* Use the floor() function to convert real->int */
- assert( u.az.oc==OP_SeekLe || u.az.oc==OP_SeekGt );
- if( pIn3->r < (double)u.az.iKey ) u.az.iKey--;
+ assert( u.bb.oc==OP_SeekLe || u.bb.oc==OP_SeekGt );
+ if( pIn3->r < (double)u.bb.iKey ) u.bb.iKey--;
}
}
- rc = sqlite3BtreeMovetoUnpacked(u.az.pC->pCursor, 0, (u64)u.az.iKey, 0, &u.az.res);
+ rc = sqlite3BtreeMovetoUnpacked(u.bb.pC->pCursor, 0, (u64)u.bb.iKey, 0, &u.bb.res);
if( rc!=SQLITE_OK ){
goto abort_due_to_error;
}
- if( u.az.res==0 ){
- u.az.pC->rowidIsValid = 1;
- u.az.pC->lastRowid = u.az.iKey;
+ if( u.bb.res==0 ){
+ u.bb.pC->rowidIsValid = 1;
+ u.bb.pC->lastRowid = u.bb.iKey;
}
}else{
- u.az.nField = pOp->p4.i;
+ u.bb.nField = pOp->p4.i;
assert( pOp->p4type==P4_INT32 );
- assert( u.az.nField>0 );
- u.az.r.pKeyInfo = u.az.pC->pKeyInfo;
- u.az.r.nField = (u16)u.az.nField;
+ assert( u.bb.nField>0 );
+ u.bb.r.pKeyInfo = u.bb.pC->pKeyInfo;
+ u.bb.r.nField = (u16)u.bb.nField;
/* The next line of code computes as follows, only faster:
- ** if( u.az.oc==OP_SeekGt || u.az.oc==OP_SeekLe ){
- ** u.az.r.flags = UNPACKED_INCRKEY;
+ ** if( u.bb.oc==OP_SeekGt || u.bb.oc==OP_SeekLe ){
+ ** u.bb.r.flags = UNPACKED_INCRKEY;
** }else{
- ** u.az.r.flags = 0;
+ ** u.bb.r.flags = 0;
** }
*/
- u.az.r.flags = (u16)(UNPACKED_INCRKEY * (1 & (u.az.oc - OP_SeekLt)));
- assert( u.az.oc!=OP_SeekGt || u.az.r.flags==UNPACKED_INCRKEY );
- assert( u.az.oc!=OP_SeekLe || u.az.r.flags==UNPACKED_INCRKEY );
- assert( u.az.oc!=OP_SeekGe || u.az.r.flags==0 );
- assert( u.az.oc!=OP_SeekLt || u.az.r.flags==0 );
+ u.bb.r.flags = (u16)(UNPACKED_INCRKEY * (1 & (u.bb.oc - OP_SeekLt)));
+ assert( u.bb.oc!=OP_SeekGt || u.bb.r.flags==UNPACKED_INCRKEY );
+ assert( u.bb.oc!=OP_SeekLe || u.bb.r.flags==UNPACKED_INCRKEY );
+ assert( u.bb.oc!=OP_SeekGe || u.bb.r.flags==0 );
+ assert( u.bb.oc!=OP_SeekLt || u.bb.r.flags==0 );
- u.az.r.aMem = &aMem[pOp->p3];
+ u.bb.r.aMem = &aMem[pOp->p3];
#ifdef SQLITE_DEBUG
- { int i; for(i=0; i<u.az.r.nField; i++) assert( memIsValid(&u.az.r.aMem[i]) ); }
+ { int i; for(i=0; i<u.bb.r.nField; i++) assert( memIsValid(&u.bb.r.aMem[i]) ); }
#endif
- ExpandBlob(u.az.r.aMem);
- rc = sqlite3BtreeMovetoUnpacked(u.az.pC->pCursor, &u.az.r, 0, 0, &u.az.res);
+ ExpandBlob(u.bb.r.aMem);
+ rc = sqlite3BtreeMovetoUnpacked(u.bb.pC->pCursor, &u.bb.r, 0, 0, &u.bb.res);
if( rc!=SQLITE_OK ){
goto abort_due_to_error;
}
- u.az.pC->rowidIsValid = 0;
+ u.bb.pC->rowidIsValid = 0;
}
- u.az.pC->deferredMoveto = 0;
- u.az.pC->cacheStatus = CACHE_STALE;
+ u.bb.pC->deferredMoveto = 0;
+ u.bb.pC->cacheStatus = CACHE_STALE;
#ifdef SQLITE_TEST
sqlite3_search_count++;
#endif
- if( u.az.oc>=OP_SeekGe ){ assert( u.az.oc==OP_SeekGe || u.az.oc==OP_SeekGt );
- if( u.az.res<0 || (u.az.res==0 && u.az.oc==OP_SeekGt) ){
- rc = sqlite3BtreeNext(u.az.pC->pCursor, &u.az.res);
+ if( u.bb.oc>=OP_SeekGe ){ assert( u.bb.oc==OP_SeekGe || u.bb.oc==OP_SeekGt );
+ if( u.bb.res<0 || (u.bb.res==0 && u.bb.oc==OP_SeekGt) ){
+ rc = sqlite3BtreeNext(u.bb.pC->pCursor, &u.bb.res);
if( rc!=SQLITE_OK ) goto abort_due_to_error;
- u.az.pC->rowidIsValid = 0;
+ u.bb.pC->rowidIsValid = 0;
}else{
- u.az.res = 0;
+ u.bb.res = 0;
}
}else{
- assert( u.az.oc==OP_SeekLt || u.az.oc==OP_SeekLe );
- if( u.az.res>0 || (u.az.res==0 && u.az.oc==OP_SeekLt) ){
- rc = sqlite3BtreePrevious(u.az.pC->pCursor, &u.az.res);
+ assert( u.bb.oc==OP_SeekLt || u.bb.oc==OP_SeekLe );
+ if( u.bb.res>0 || (u.bb.res==0 && u.bb.oc==OP_SeekLt) ){
+ rc = sqlite3BtreePrevious(u.bb.pC->pCursor, &u.bb.res);
if( rc!=SQLITE_OK ) goto abort_due_to_error;
- u.az.pC->rowidIsValid = 0;
+ u.bb.pC->rowidIsValid = 0;
}else{
- /* u.az.res might be negative because the table is empty. Check to
+ /* u.bb.res might be negative because the table is empty. Check to
** see if this is the case.
*/
- u.az.res = sqlite3BtreeEof(u.az.pC->pCursor);
+ u.bb.res = sqlite3BtreeEof(u.bb.pC->pCursor);
}
}
assert( pOp->p2>0 );
- if( u.az.res ){
+ if( u.bb.res ){
pc = pOp->p2 - 1;
}
}else{
@@ -63847,20 +68304,20 @@
** occur, no unnecessary I/O happens.
*/
case OP_Seek: { /* in2 */
-#if 0 /* local variables moved into u.ba */
+#if 0 /* local variables moved into u.bc */
VdbeCursor *pC;
-#endif /* local variables moved into u.ba */
+#endif /* local variables moved into u.bc */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.ba.pC = p->apCsr[pOp->p1];
- assert( u.ba.pC!=0 );
- if( ALWAYS(u.ba.pC->pCursor!=0) ){
- assert( u.ba.pC->isTable );
- u.ba.pC->nullRow = 0;
+ u.bc.pC = p->apCsr[pOp->p1];
+ assert( u.bc.pC!=0 );
+ if( ALWAYS(u.bc.pC->pCursor!=0) ){
+ assert( u.bc.pC->isTable );
+ u.bc.pC->nullRow = 0;
pIn2 = &aMem[pOp->p2];
- u.ba.pC->movetoTarget = sqlite3VdbeIntValue(pIn2);
- u.ba.pC->rowidIsValid = 0;
- u.ba.pC->deferredMoveto = 1;
+ u.bc.pC->movetoTarget = sqlite3VdbeIntValue(pIn2);
+ u.bc.pC->rowidIsValid = 0;
+ u.bc.pC->deferredMoveto = 1;
}
break;
}
@@ -63892,62 +68349,63 @@
*/
case OP_NotFound: /* jump, in3 */
case OP_Found: { /* jump, in3 */
-#if 0 /* local variables moved into u.bb */
+#if 0 /* local variables moved into u.bd */
int alreadyExists;
VdbeCursor *pC;
int res;
+ char *pFree;
UnpackedRecord *pIdxKey;
UnpackedRecord r;
char aTempRec[ROUND8(sizeof(UnpackedRecord)) + sizeof(Mem)*3 + 7];
-#endif /* local variables moved into u.bb */
+#endif /* local variables moved into u.bd */
#ifdef SQLITE_TEST
sqlite3_found_count++;
#endif
- u.bb.alreadyExists = 0;
+ u.bd.alreadyExists = 0;
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
assert( pOp->p4type==P4_INT32 );
- u.bb.pC = p->apCsr[pOp->p1];
- assert( u.bb.pC!=0 );
+ u.bd.pC = p->apCsr[pOp->p1];
+ assert( u.bd.pC!=0 );
pIn3 = &aMem[pOp->p3];
- if( ALWAYS(u.bb.pC->pCursor!=0) ){
+ if( ALWAYS(u.bd.pC->pCursor!=0) ){
- assert( u.bb.pC->isTable==0 );
+ assert( u.bd.pC->isTable==0 );
if( pOp->p4.i>0 ){
- u.bb.r.pKeyInfo = u.bb.pC->pKeyInfo;
- u.bb.r.nField = (u16)pOp->p4.i;
- u.bb.r.aMem = pIn3;
+ u.bd.r.pKeyInfo = u.bd.pC->pKeyInfo;
+ u.bd.r.nField = (u16)pOp->p4.i;
+ u.bd.r.aMem = pIn3;
#ifdef SQLITE_DEBUG
- { int i; for(i=0; i<u.bb.r.nField; i++) assert( memIsValid(&u.bb.r.aMem[i]) ); }
+ { int i; for(i=0; i<u.bd.r.nField; i++) assert( memIsValid(&u.bd.r.aMem[i]) ); }
#endif
- u.bb.r.flags = UNPACKED_PREFIX_MATCH;
- u.bb.pIdxKey = &u.bb.r;
+ u.bd.r.flags = UNPACKED_PREFIX_MATCH;
+ u.bd.pIdxKey = &u.bd.r;
}else{
+ u.bd.pIdxKey = sqlite3VdbeAllocUnpackedRecord(
+ u.bd.pC->pKeyInfo, u.bd.aTempRec, sizeof(u.bd.aTempRec), &u.bd.pFree
+ );
+ if( u.bd.pIdxKey==0 ) goto no_mem;
assert( pIn3->flags & MEM_Blob );
assert( (pIn3->flags & MEM_Zero)==0 ); /* zeroblobs already expanded */
- u.bb.pIdxKey = sqlite3VdbeRecordUnpack(u.bb.pC->pKeyInfo, pIn3->n, pIn3->z,
- u.bb.aTempRec, sizeof(u.bb.aTempRec));
- if( u.bb.pIdxKey==0 ){
- goto no_mem;
- }
- u.bb.pIdxKey->flags |= UNPACKED_PREFIX_MATCH;
+ sqlite3VdbeRecordUnpack(u.bd.pC->pKeyInfo, pIn3->n, pIn3->z, u.bd.pIdxKey);
+ u.bd.pIdxKey->flags |= UNPACKED_PREFIX_MATCH;
}
- rc = sqlite3BtreeMovetoUnpacked(u.bb.pC->pCursor, u.bb.pIdxKey, 0, 0, &u.bb.res);
+ rc = sqlite3BtreeMovetoUnpacked(u.bd.pC->pCursor, u.bd.pIdxKey, 0, 0, &u.bd.res);
if( pOp->p4.i==0 ){
- sqlite3VdbeDeleteUnpackedRecord(u.bb.pIdxKey);
+ sqlite3DbFree(db, u.bd.pFree);
}
if( rc!=SQLITE_OK ){
break;
}
- u.bb.alreadyExists = (u.bb.res==0);
- u.bb.pC->deferredMoveto = 0;
- u.bb.pC->cacheStatus = CACHE_STALE;
+ u.bd.alreadyExists = (u.bd.res==0);
+ u.bd.pC->deferredMoveto = 0;
+ u.bd.pC->cacheStatus = CACHE_STALE;
}
if( pOp->opcode==OP_Found ){
- if( u.bb.alreadyExists ) pc = pOp->p2 - 1;
+ if( u.bd.alreadyExists ) pc = pOp->p2 - 1;
}else{
- if( !u.bb.alreadyExists ) pc = pOp->p2 - 1;
+ if( !u.bd.alreadyExists ) pc = pOp->p2 - 1;
}
break;
}
@@ -63979,7 +68437,7 @@
** See also: NotFound, NotExists, Found
*/
case OP_IsUnique: { /* jump, in3 */
-#if 0 /* local variables moved into u.bc */
+#if 0 /* local variables moved into u.be */
u16 ii;
VdbeCursor *pCx;
BtCursor *pCrsr;
@@ -63987,55 +68445,55 @@
Mem *aMx;
UnpackedRecord r; /* B-Tree index search key */
i64 R; /* Rowid stored in register P3 */
-#endif /* local variables moved into u.bc */
+#endif /* local variables moved into u.be */
pIn3 = &aMem[pOp->p3];
- u.bc.aMx = &aMem[pOp->p4.i];
+ u.be.aMx = &aMem[pOp->p4.i];
/* Assert that the values of parameters P1 and P4 are in range. */
assert( pOp->p4type==P4_INT32 );
assert( pOp->p4.i>0 && pOp->p4.i<=p->nMem );
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
/* Find the index cursor. */
- u.bc.pCx = p->apCsr[pOp->p1];
- assert( u.bc.pCx->deferredMoveto==0 );
- u.bc.pCx->seekResult = 0;
- u.bc.pCx->cacheStatus = CACHE_STALE;
- u.bc.pCrsr = u.bc.pCx->pCursor;
+ u.be.pCx = p->apCsr[pOp->p1];
+ assert( u.be.pCx->deferredMoveto==0 );
+ u.be.pCx->seekResult = 0;
+ u.be.pCx->cacheStatus = CACHE_STALE;
+ u.be.pCrsr = u.be.pCx->pCursor;
/* If any of the values are NULL, take the jump. */
- u.bc.nField = u.bc.pCx->pKeyInfo->nField;
- for(u.bc.ii=0; u.bc.ii<u.bc.nField; u.bc.ii++){
- if( u.bc.aMx[u.bc.ii].flags & MEM_Null ){
+ u.be.nField = u.be.pCx->pKeyInfo->nField;
+ for(u.be.ii=0; u.be.ii<u.be.nField; u.be.ii++){
+ if( u.be.aMx[u.be.ii].flags & MEM_Null ){
pc = pOp->p2 - 1;
- u.bc.pCrsr = 0;
+ u.be.pCrsr = 0;
break;
}
}
- assert( (u.bc.aMx[u.bc.nField].flags & MEM_Null)==0 );
+ assert( (u.be.aMx[u.be.nField].flags & MEM_Null)==0 );
- if( u.bc.pCrsr!=0 ){
+ if( u.be.pCrsr!=0 ){
/* Populate the index search key. */
- u.bc.r.pKeyInfo = u.bc.pCx->pKeyInfo;
- u.bc.r.nField = u.bc.nField + 1;
- u.bc.r.flags = UNPACKED_PREFIX_SEARCH;
- u.bc.r.aMem = u.bc.aMx;
+ u.be.r.pKeyInfo = u.be.pCx->pKeyInfo;
+ u.be.r.nField = u.be.nField + 1;
+ u.be.r.flags = UNPACKED_PREFIX_SEARCH;
+ u.be.r.aMem = u.be.aMx;
#ifdef SQLITE_DEBUG
- { int i; for(i=0; i<u.bc.r.nField; i++) assert( memIsValid(&u.bc.r.aMem[i]) ); }
+ { int i; for(i=0; i<u.be.r.nField; i++) assert( memIsValid(&u.be.r.aMem[i]) ); }
#endif
- /* Extract the value of u.bc.R from register P3. */
+ /* Extract the value of u.be.R from register P3. */
sqlite3VdbeMemIntegerify(pIn3);
- u.bc.R = pIn3->u.i;
+ u.be.R = pIn3->u.i;
/* Search the B-Tree index. If no conflicting record is found, jump
** to P2. Otherwise, copy the rowid of the conflicting record to
** register P3 and fall through to the next instruction. */
- rc = sqlite3BtreeMovetoUnpacked(u.bc.pCrsr, &u.bc.r, 0, 0, &u.bc.pCx->seekResult);
- if( (u.bc.r.flags & UNPACKED_PREFIX_SEARCH) || u.bc.r.rowid==u.bc.R ){
+ rc = sqlite3BtreeMovetoUnpacked(u.be.pCrsr, &u.be.r, 0, 0, &u.be.pCx->seekResult);
+ if( (u.be.r.flags & UNPACKED_PREFIX_SEARCH) || u.be.r.rowid==u.be.R ){
pc = pOp->p2 - 1;
}else{
- pIn3->u.i = u.bc.r.rowid;
+ pIn3->u.i = u.be.r.rowid;
}
}
break;
@@ -64043,7 +68501,7 @@
/* Opcode: NotExists P1 P2 P3 * *
**
-** Use the content of register P3 as a integer key. If a record
+** Use the content of register P3 as an integer key. If a record
** with that key does not exist in table of P1, then jump to P2.
** If the record does exist, then fall through. The cursor is left
** pointing to the record if it exists.
@@ -64056,42 +68514,42 @@
** See also: Found, NotFound, IsUnique
*/
case OP_NotExists: { /* jump, in3 */
-#if 0 /* local variables moved into u.bd */
+#if 0 /* local variables moved into u.bf */
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
u64 iKey;
-#endif /* local variables moved into u.bd */
+#endif /* local variables moved into u.bf */
pIn3 = &aMem[pOp->p3];
assert( pIn3->flags & MEM_Int );
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bd.pC = p->apCsr[pOp->p1];
- assert( u.bd.pC!=0 );
- assert( u.bd.pC->isTable );
- assert( u.bd.pC->pseudoTableReg==0 );
- u.bd.pCrsr = u.bd.pC->pCursor;
- if( u.bd.pCrsr!=0 ){
- u.bd.res = 0;
- u.bd.iKey = pIn3->u.i;
- rc = sqlite3BtreeMovetoUnpacked(u.bd.pCrsr, 0, u.bd.iKey, 0, &u.bd.res);
- u.bd.pC->lastRowid = pIn3->u.i;
- u.bd.pC->rowidIsValid = u.bd.res==0 ?1:0;
- u.bd.pC->nullRow = 0;
- u.bd.pC->cacheStatus = CACHE_STALE;
- u.bd.pC->deferredMoveto = 0;
- if( u.bd.res!=0 ){
+ u.bf.pC = p->apCsr[pOp->p1];
+ assert( u.bf.pC!=0 );
+ assert( u.bf.pC->isTable );
+ assert( u.bf.pC->pseudoTableReg==0 );
+ u.bf.pCrsr = u.bf.pC->pCursor;
+ if( ALWAYS(u.bf.pCrsr!=0) ){
+ u.bf.res = 0;
+ u.bf.iKey = pIn3->u.i;
+ rc = sqlite3BtreeMovetoUnpacked(u.bf.pCrsr, 0, u.bf.iKey, 0, &u.bf.res);
+ u.bf.pC->lastRowid = pIn3->u.i;
+ u.bf.pC->rowidIsValid = u.bf.res==0 ?1:0;
+ u.bf.pC->nullRow = 0;
+ u.bf.pC->cacheStatus = CACHE_STALE;
+ u.bf.pC->deferredMoveto = 0;
+ if( u.bf.res!=0 ){
pc = pOp->p2 - 1;
- assert( u.bd.pC->rowidIsValid==0 );
+ assert( u.bf.pC->rowidIsValid==0 );
}
- u.bd.pC->seekResult = u.bd.res;
+ u.bf.pC->seekResult = u.bf.res;
}else{
/* This happens when an attempt to open a read cursor on the
** sqlite_master table returns SQLITE_EMPTY.
*/
pc = pOp->p2 - 1;
- assert( u.bd.pC->rowidIsValid==0 );
- u.bd.pC->seekResult = 0;
+ assert( u.bf.pC->rowidIsValid==0 );
+ u.bf.pC->seekResult = 0;
}
break;
}
@@ -64121,26 +68579,26 @@
** If P3>0 then P3 is a register in the root frame of this VDBE that holds
** the largest previously generated record number. No new record numbers are
** allowed to be less than this value. When this value reaches its maximum,
-** a SQLITE_FULL error is generated. The P3 register is updated with the '
+** an SQLITE_FULL error is generated. The P3 register is updated with the '
** generated record number. This P3 mechanism is used to help implement the
** AUTOINCREMENT feature.
*/
case OP_NewRowid: { /* out2-prerelease */
-#if 0 /* local variables moved into u.be */
+#if 0 /* local variables moved into u.bg */
i64 v; /* The new rowid */
VdbeCursor *pC; /* Cursor of table to get the new rowid */
int res; /* Result of an sqlite3BtreeLast() */
int cnt; /* Counter to limit the number of searches */
Mem *pMem; /* Register holding largest rowid for AUTOINCREMENT */
VdbeFrame *pFrame; /* Root frame of VDBE */
-#endif /* local variables moved into u.be */
+#endif /* local variables moved into u.bg */
- u.be.v = 0;
- u.be.res = 0;
+ u.bg.v = 0;
+ u.bg.res = 0;
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.be.pC = p->apCsr[pOp->p1];
- assert( u.be.pC!=0 );
- if( NEVER(u.be.pC->pCursor==0) ){
+ u.bg.pC = p->apCsr[pOp->p1];
+ assert( u.bg.pC!=0 );
+ if( NEVER(u.bg.pC->pCursor==0) ){
/* The zero initialization above is all that is needed */
}else{
/* The next rowid or record number (different terms for the same
@@ -64156,8 +68614,7 @@
** succeeded. If the random rowid does exist, we select a new one
** and try again, up to 100 times.
*/
- assert( u.be.pC->isTable );
- u.be.cnt = 0;
+ assert( u.bg.pC->isTable );
#ifdef SQLITE_32BIT_ROWID
# define MAX_ROWID 0x7fffffff
@@ -64169,23 +68626,23 @@
# define MAX_ROWID (i64)( (((u64)0x7fffffff)<<32) | (u64)0xffffffff )
#endif
- if( !u.be.pC->useRandomRowid ){
- u.be.v = sqlite3BtreeGetCachedRowid(u.be.pC->pCursor);
- if( u.be.v==0 ){
- rc = sqlite3BtreeLast(u.be.pC->pCursor, &u.be.res);
+ if( !u.bg.pC->useRandomRowid ){
+ u.bg.v = sqlite3BtreeGetCachedRowid(u.bg.pC->pCursor);
+ if( u.bg.v==0 ){
+ rc = sqlite3BtreeLast(u.bg.pC->pCursor, &u.bg.res);
if( rc!=SQLITE_OK ){
goto abort_due_to_error;
}
- if( u.be.res ){
- u.be.v = 1; /* IMP: R-61914-48074 */
+ if( u.bg.res ){
+ u.bg.v = 1; /* IMP: R-61914-48074 */
}else{
- assert( sqlite3BtreeCursorIsValid(u.be.pC->pCursor) );
- rc = sqlite3BtreeKeySize(u.be.pC->pCursor, &u.be.v);
+ assert( sqlite3BtreeCursorIsValid(u.bg.pC->pCursor) );
+ rc = sqlite3BtreeKeySize(u.bg.pC->pCursor, &u.bg.v);
assert( rc==SQLITE_OK ); /* Cannot fail following BtreeLast() */
- if( u.be.v==MAX_ROWID ){
- u.be.pC->useRandomRowid = 1;
+ if( u.bg.v==MAX_ROWID ){
+ u.bg.pC->useRandomRowid = 1;
}else{
- u.be.v++; /* IMP: R-29538-34987 */
+ u.bg.v++; /* IMP: R-29538-34987 */
}
}
}
@@ -64195,35 +68652,35 @@
/* Assert that P3 is a valid memory cell. */
assert( pOp->p3>0 );
if( p->pFrame ){
- for(u.be.pFrame=p->pFrame; u.be.pFrame->pParent; u.be.pFrame=u.be.pFrame->pParent);
+ for(u.bg.pFrame=p->pFrame; u.bg.pFrame->pParent; u.bg.pFrame=u.bg.pFrame->pParent);
/* Assert that P3 is a valid memory cell. */
- assert( pOp->p3<=u.be.pFrame->nMem );
- u.be.pMem = &u.be.pFrame->aMem[pOp->p3];
+ assert( pOp->p3<=u.bg.pFrame->nMem );
+ u.bg.pMem = &u.bg.pFrame->aMem[pOp->p3];
}else{
/* Assert that P3 is a valid memory cell. */
assert( pOp->p3<=p->nMem );
- u.be.pMem = &aMem[pOp->p3];
- memAboutToChange(p, u.be.pMem);
+ u.bg.pMem = &aMem[pOp->p3];
+ memAboutToChange(p, u.bg.pMem);
}
- assert( memIsValid(u.be.pMem) );
+ assert( memIsValid(u.bg.pMem) );
- REGISTER_TRACE(pOp->p3, u.be.pMem);
- sqlite3VdbeMemIntegerify(u.be.pMem);
- assert( (u.be.pMem->flags & MEM_Int)!=0 ); /* mem(P3) holds an integer */
- if( u.be.pMem->u.i==MAX_ROWID || u.be.pC->useRandomRowid ){
+ REGISTER_TRACE(pOp->p3, u.bg.pMem);
+ sqlite3VdbeMemIntegerify(u.bg.pMem);
+ assert( (u.bg.pMem->flags & MEM_Int)!=0 ); /* mem(P3) holds an integer */
+ if( u.bg.pMem->u.i==MAX_ROWID || u.bg.pC->useRandomRowid ){
rc = SQLITE_FULL; /* IMP: R-12275-61338 */
goto abort_due_to_error;
}
- if( u.be.v<u.be.pMem->u.i+1 ){
- u.be.v = u.be.pMem->u.i + 1;
+ if( u.bg.v<u.bg.pMem->u.i+1 ){
+ u.bg.v = u.bg.pMem->u.i + 1;
}
- u.be.pMem->u.i = u.be.v;
+ u.bg.pMem->u.i = u.bg.v;
}
#endif
- sqlite3BtreeSetCachedRowid(u.be.pC->pCursor, u.be.v<MAX_ROWID ? u.be.v+1 : 0);
+ sqlite3BtreeSetCachedRowid(u.bg.pC->pCursor, u.bg.v<MAX_ROWID ? u.bg.v+1 : 0);
}
- if( u.be.pC->useRandomRowid ){
+ if( u.bg.pC->useRandomRowid ){
/* IMPLEMENTATION-OF: R-07677-41881 If the largest ROWID is equal to the
** largest possible integer (9223372036854775807) then the database
** engine starts picking positive candidate ROWIDs at random until
@@ -64231,35 +68688,35 @@
assert( pOp->p3==0 ); /* We cannot be in random rowid mode if this is
** an AUTOINCREMENT table. */
/* on the first attempt, simply do one more than previous */
- u.be.v = db->lastRowid;
- u.be.v &= (MAX_ROWID>>1); /* ensure doesn't go negative */
- u.be.v++; /* ensure non-zero */
- u.be.cnt = 0;
- while( ((rc = sqlite3BtreeMovetoUnpacked(u.be.pC->pCursor, 0, (u64)u.be.v,
- 0, &u.be.res))==SQLITE_OK)
- && (u.be.res==0)
- && (++u.be.cnt<100)){
+ u.bg.v = lastRowid;
+ u.bg.v &= (MAX_ROWID>>1); /* ensure doesn't go negative */
+ u.bg.v++; /* ensure non-zero */
+ u.bg.cnt = 0;
+ while( ((rc = sqlite3BtreeMovetoUnpacked(u.bg.pC->pCursor, 0, (u64)u.bg.v,
+ 0, &u.bg.res))==SQLITE_OK)
+ && (u.bg.res==0)
+ && (++u.bg.cnt<100)){
/* collision - try another random rowid */
- sqlite3_randomness(sizeof(u.be.v), &u.be.v);
- if( u.be.cnt<5 ){
+ sqlite3_randomness(sizeof(u.bg.v), &u.bg.v);
+ if( u.bg.cnt<5 ){
/* try "small" random rowids for the initial attempts */
- u.be.v &= 0xffffff;
+ u.bg.v &= 0xffffff;
}else{
- u.be.v &= (MAX_ROWID>>1); /* ensure doesn't go negative */
+ u.bg.v &= (MAX_ROWID>>1); /* ensure doesn't go negative */
}
- u.be.v++; /* ensure non-zero */
+ u.bg.v++; /* ensure non-zero */
}
- if( rc==SQLITE_OK && u.be.res==0 ){
+ if( rc==SQLITE_OK && u.bg.res==0 ){
rc = SQLITE_FULL; /* IMP: R-38219-53002 */
goto abort_due_to_error;
}
- assert( u.be.v>0 ); /* EV: R-40812-03570 */
+ assert( u.bg.v>0 ); /* EV: R-40812-03570 */
}
- u.be.pC->rowidIsValid = 0;
- u.be.pC->deferredMoveto = 0;
- u.be.pC->cacheStatus = CACHE_STALE;
+ u.bg.pC->rowidIsValid = 0;
+ u.bg.pC->deferredMoveto = 0;
+ u.bg.pC->cacheStatus = CACHE_STALE;
}
- pOut->u.i = u.be.v;
+ pOut->u.i = u.bg.v;
break;
}
@@ -64309,7 +68766,7 @@
*/
case OP_Insert:
case OP_InsertInt: {
-#if 0 /* local variables moved into u.bf */
+#if 0 /* local variables moved into u.bh */
Mem *pData; /* MEM cell holding data for the record to be inserted */
Mem *pKey; /* MEM cell holding key for the record */
i64 iKey; /* The integer ROWID or key for the record to be inserted */
@@ -64319,60 +68776,60 @@
const char *zDb; /* database name - used by the update hook */
const char *zTbl; /* Table name - used by the opdate hook */
int op; /* Opcode for update hook: SQLITE_UPDATE or SQLITE_INSERT */
-#endif /* local variables moved into u.bf */
+#endif /* local variables moved into u.bh */
- u.bf.pData = &aMem[pOp->p2];
+ u.bh.pData = &aMem[pOp->p2];
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- assert( memIsValid(u.bf.pData) );
- u.bf.pC = p->apCsr[pOp->p1];
- assert( u.bf.pC!=0 );
- assert( u.bf.pC->pCursor!=0 );
- assert( u.bf.pC->pseudoTableReg==0 );
- assert( u.bf.pC->isTable );
- REGISTER_TRACE(pOp->p2, u.bf.pData);
+ assert( memIsValid(u.bh.pData) );
+ u.bh.pC = p->apCsr[pOp->p1];
+ assert( u.bh.pC!=0 );
+ assert( u.bh.pC->pCursor!=0 );
+ assert( u.bh.pC->pseudoTableReg==0 );
+ assert( u.bh.pC->isTable );
+ REGISTER_TRACE(pOp->p2, u.bh.pData);
if( pOp->opcode==OP_Insert ){
- u.bf.pKey = &aMem[pOp->p3];
- assert( u.bf.pKey->flags & MEM_Int );
- assert( memIsValid(u.bf.pKey) );
- REGISTER_TRACE(pOp->p3, u.bf.pKey);
- u.bf.iKey = u.bf.pKey->u.i;
+ u.bh.pKey = &aMem[pOp->p3];
+ assert( u.bh.pKey->flags & MEM_Int );
+ assert( memIsValid(u.bh.pKey) );
+ REGISTER_TRACE(pOp->p3, u.bh.pKey);
+ u.bh.iKey = u.bh.pKey->u.i;
}else{
assert( pOp->opcode==OP_InsertInt );
- u.bf.iKey = pOp->p3;
+ u.bh.iKey = pOp->p3;
}
if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++;
- if( pOp->p5 & OPFLAG_LASTROWID ) db->lastRowid = u.bf.iKey;
- if( u.bf.pData->flags & MEM_Null ){
- u.bf.pData->z = 0;
- u.bf.pData->n = 0;
+ if( pOp->p5 & OPFLAG_LASTROWID ) db->lastRowid = lastRowid = u.bh.iKey;
+ if( u.bh.pData->flags & MEM_Null ){
+ u.bh.pData->z = 0;
+ u.bh.pData->n = 0;
}else{
- assert( u.bf.pData->flags & (MEM_Blob|MEM_Str) );
+ assert( u.bh.pData->flags & (MEM_Blob|MEM_Str) );
}
- u.bf.seekResult = ((pOp->p5 & OPFLAG_USESEEKRESULT) ? u.bf.pC->seekResult : 0);
- if( u.bf.pData->flags & MEM_Zero ){
- u.bf.nZero = u.bf.pData->u.nZero;
+ u.bh.seekResult = ((pOp->p5 & OPFLAG_USESEEKRESULT) ? u.bh.pC->seekResult : 0);
+ if( u.bh.pData->flags & MEM_Zero ){
+ u.bh.nZero = u.bh.pData->u.nZero;
}else{
- u.bf.nZero = 0;
+ u.bh.nZero = 0;
}
- sqlite3BtreeSetCachedRowid(u.bf.pC->pCursor, 0);
- rc = sqlite3BtreeInsert(u.bf.pC->pCursor, 0, u.bf.iKey,
- u.bf.pData->z, u.bf.pData->n, u.bf.nZero,
- pOp->p5 & OPFLAG_APPEND, u.bf.seekResult
+ sqlite3BtreeSetCachedRowid(u.bh.pC->pCursor, 0);
+ rc = sqlite3BtreeInsert(u.bh.pC->pCursor, 0, u.bh.iKey,
+ u.bh.pData->z, u.bh.pData->n, u.bh.nZero,
+ pOp->p5 & OPFLAG_APPEND, u.bh.seekResult
);
- u.bf.pC->rowidIsValid = 0;
- u.bf.pC->deferredMoveto = 0;
- u.bf.pC->cacheStatus = CACHE_STALE;
+ u.bh.pC->rowidIsValid = 0;
+ u.bh.pC->deferredMoveto = 0;
+ u.bh.pC->cacheStatus = CACHE_STALE;
/* Invoke the update-hook if required. */
if( rc==SQLITE_OK && db->xUpdateCallback && pOp->p4.z ){
- u.bf.zDb = db->aDb[u.bf.pC->iDb].zName;
- u.bf.zTbl = pOp->p4.z;
- u.bf.op = ((pOp->p5 & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_INSERT);
- assert( u.bf.pC->isTable );
- db->xUpdateCallback(db->pUpdateArg, u.bf.op, u.bf.zDb, u.bf.zTbl, u.bf.iKey);
- assert( u.bf.pC->iDb>=0 );
+ u.bh.zDb = db->aDb[u.bh.pC->iDb].zName;
+ u.bh.zTbl = pOp->p4.z;
+ u.bh.op = ((pOp->p5 & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_INSERT);
+ assert( u.bh.pC->isTable );
+ db->xUpdateCallback(db->pUpdateArg, u.bh.op, u.bh.zDb, u.bh.zTbl, u.bh.iKey);
+ assert( u.bh.pC->iDb>=0 );
}
break;
}
@@ -64398,47 +68855,47 @@
** using OP_NotFound prior to invoking this opcode.
*/
case OP_Delete: {
-#if 0 /* local variables moved into u.bg */
+#if 0 /* local variables moved into u.bi */
i64 iKey;
VdbeCursor *pC;
-#endif /* local variables moved into u.bg */
+#endif /* local variables moved into u.bi */
- u.bg.iKey = 0;
+ u.bi.iKey = 0;
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bg.pC = p->apCsr[pOp->p1];
- assert( u.bg.pC!=0 );
- assert( u.bg.pC->pCursor!=0 ); /* Only valid for real tables, no pseudotables */
+ u.bi.pC = p->apCsr[pOp->p1];
+ assert( u.bi.pC!=0 );
+ assert( u.bi.pC->pCursor!=0 ); /* Only valid for real tables, no pseudotables */
- /* If the update-hook will be invoked, set u.bg.iKey to the rowid of the
+ /* If the update-hook will be invoked, set u.bi.iKey to the rowid of the
** row being deleted.
*/
if( db->xUpdateCallback && pOp->p4.z ){
- assert( u.bg.pC->isTable );
- assert( u.bg.pC->rowidIsValid ); /* lastRowid set by previous OP_NotFound */
- u.bg.iKey = u.bg.pC->lastRowid;
+ assert( u.bi.pC->isTable );
+ assert( u.bi.pC->rowidIsValid ); /* lastRowid set by previous OP_NotFound */
+ u.bi.iKey = u.bi.pC->lastRowid;
}
/* The OP_Delete opcode always follows an OP_NotExists or OP_Last or
** OP_Column on the same table without any intervening operations that
- ** might move or invalidate the cursor. Hence cursor u.bg.pC is always pointing
+ ** might move or invalidate the cursor. Hence cursor u.bi.pC is always pointing
** to the row to be deleted and the sqlite3VdbeCursorMoveto() operation
** below is always a no-op and cannot fail. We will run it anyhow, though,
** to guard against future changes to the code generator.
**/
- assert( u.bg.pC->deferredMoveto==0 );
- rc = sqlite3VdbeCursorMoveto(u.bg.pC);
+ assert( u.bi.pC->deferredMoveto==0 );
+ rc = sqlite3VdbeCursorMoveto(u.bi.pC);
if( NEVER(rc!=SQLITE_OK) ) goto abort_due_to_error;
- sqlite3BtreeSetCachedRowid(u.bg.pC->pCursor, 0);
- rc = sqlite3BtreeDelete(u.bg.pC->pCursor);
- u.bg.pC->cacheStatus = CACHE_STALE;
+ sqlite3BtreeSetCachedRowid(u.bi.pC->pCursor, 0);
+ rc = sqlite3BtreeDelete(u.bi.pC->pCursor);
+ u.bi.pC->cacheStatus = CACHE_STALE;
/* Invoke the update-hook if required. */
if( rc==SQLITE_OK && db->xUpdateCallback && pOp->p4.z ){
- const char *zDb = db->aDb[u.bg.pC->iDb].zName;
+ const char *zDb = db->aDb[u.bi.pC->iDb].zName;
const char *zTbl = pOp->p4.z;
- db->xUpdateCallback(db->pUpdateArg, SQLITE_DELETE, zDb, zTbl, u.bg.iKey);
- assert( u.bg.pC->iDb>=0 );
+ db->xUpdateCallback(db->pUpdateArg, SQLITE_DELETE, zDb, zTbl, u.bi.iKey);
+ assert( u.bi.pC->iDb>=0 );
}
if( pOp->p2 & OPFLAG_NCHANGE ) p->nChange++;
break;
@@ -64456,6 +68913,49 @@
break;
}
+/* Opcode: SorterCompare P1 P2 P3
+**
+** P1 is a sorter cursor. This instruction compares the record blob in
+** register P3 with the entry that the sorter cursor currently points to.
+** If, excluding the rowid fields at the end, the two records are a match,
+** fall through to the next instruction. Otherwise, jump to instruction P2.
+*/
+case OP_SorterCompare: {
+#if 0 /* local variables moved into u.bj */
+ VdbeCursor *pC;
+ int res;
+#endif /* local variables moved into u.bj */
+
+ u.bj.pC = p->apCsr[pOp->p1];
+ assert( isSorter(u.bj.pC) );
+ pIn3 = &aMem[pOp->p3];
+ rc = sqlite3VdbeSorterCompare(u.bj.pC, pIn3, &u.bj.res);
+ if( u.bj.res ){
+ pc = pOp->p2-1;
+ }
+ break;
+};
+
+/* Opcode: SorterData P1 P2 * * *
+**
+** Write into register P2 the current sorter data for sorter cursor P1.
+*/
+case OP_SorterData: {
+#if 0 /* local variables moved into u.bk */
+ VdbeCursor *pC;
+#endif /* local variables moved into u.bk */
+#ifndef SQLITE_OMIT_MERGE_SORT
+ pOut = &aMem[pOp->p2];
+ u.bk.pC = p->apCsr[pOp->p1];
+ assert( u.bk.pC->isSorter );
+ rc = sqlite3VdbeSorterRowkey(u.bk.pC, pOut);
+#else
+ pOp->opcode = OP_RowKey;
+ pc--;
+#endif
+ break;
+}
+
/* Opcode: RowData P1 P2 * * *
**
** Write into register P2 the complete row data for cursor P1.
@@ -64478,61 +68978,63 @@
*/
case OP_RowKey:
case OP_RowData: {
-#if 0 /* local variables moved into u.bh */
+#if 0 /* local variables moved into u.bl */
VdbeCursor *pC;
BtCursor *pCrsr;
u32 n;
i64 n64;
-#endif /* local variables moved into u.bh */
+#endif /* local variables moved into u.bl */
pOut = &aMem[pOp->p2];
memAboutToChange(p, pOut);
/* Note that RowKey and RowData are really exactly the same instruction */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bh.pC = p->apCsr[pOp->p1];
- assert( u.bh.pC->isTable || pOp->opcode==OP_RowKey );
- assert( u.bh.pC->isIndex || pOp->opcode==OP_RowData );
- assert( u.bh.pC!=0 );
- assert( u.bh.pC->nullRow==0 );
- assert( u.bh.pC->pseudoTableReg==0 );
- assert( u.bh.pC->pCursor!=0 );
- u.bh.pCrsr = u.bh.pC->pCursor;
- assert( sqlite3BtreeCursorIsValid(u.bh.pCrsr) );
+ u.bl.pC = p->apCsr[pOp->p1];
+ assert( u.bl.pC->isSorter==0 );
+ assert( u.bl.pC->isTable || pOp->opcode!=OP_RowData );
+ assert( u.bl.pC->isIndex || pOp->opcode==OP_RowData );
+ assert( u.bl.pC!=0 );
+ assert( u.bl.pC->nullRow==0 );
+ assert( u.bl.pC->pseudoTableReg==0 );
+ assert( !u.bl.pC->isSorter );
+ assert( u.bl.pC->pCursor!=0 );
+ u.bl.pCrsr = u.bl.pC->pCursor;
+ assert( sqlite3BtreeCursorIsValid(u.bl.pCrsr) );
/* The OP_RowKey and OP_RowData opcodes always follow OP_NotExists or
** OP_Rewind/Op_Next with no intervening instructions that might invalidate
** the cursor. Hence the following sqlite3VdbeCursorMoveto() call is always
** a no-op and can never fail. But we leave it in place as a safety.
*/
- assert( u.bh.pC->deferredMoveto==0 );
- rc = sqlite3VdbeCursorMoveto(u.bh.pC);
+ assert( u.bl.pC->deferredMoveto==0 );
+ rc = sqlite3VdbeCursorMoveto(u.bl.pC);
if( NEVER(rc!=SQLITE_OK) ) goto abort_due_to_error;
- if( u.bh.pC->isIndex ){
- assert( !u.bh.pC->isTable );
- rc = sqlite3BtreeKeySize(u.bh.pCrsr, &u.bh.n64);
+ if( u.bl.pC->isIndex ){
+ assert( !u.bl.pC->isTable );
+ VVA_ONLY(rc =) sqlite3BtreeKeySize(u.bl.pCrsr, &u.bl.n64);
assert( rc==SQLITE_OK ); /* True because of CursorMoveto() call above */
- if( u.bh.n64>db->aLimit[SQLITE_LIMIT_LENGTH] ){
+ if( u.bl.n64>db->aLimit[SQLITE_LIMIT_LENGTH] ){
goto too_big;
}
- u.bh.n = (u32)u.bh.n64;
+ u.bl.n = (u32)u.bl.n64;
}else{
- rc = sqlite3BtreeDataSize(u.bh.pCrsr, &u.bh.n);
+ VVA_ONLY(rc =) sqlite3BtreeDataSize(u.bl.pCrsr, &u.bl.n);
assert( rc==SQLITE_OK ); /* DataSize() cannot fail */
- if( u.bh.n>(u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){
+ if( u.bl.n>(u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){
goto too_big;
}
}
- if( sqlite3VdbeMemGrow(pOut, u.bh.n, 0) ){
+ if( sqlite3VdbeMemGrow(pOut, u.bl.n, 0) ){
goto no_mem;
}
- pOut->n = u.bh.n;
+ pOut->n = u.bl.n;
MemSetTypeFlag(pOut, MEM_Blob);
- if( u.bh.pC->isIndex ){
- rc = sqlite3BtreeKey(u.bh.pCrsr, 0, u.bh.n, pOut->z);
+ if( u.bl.pC->isIndex ){
+ rc = sqlite3BtreeKey(u.bl.pCrsr, 0, u.bl.n, pOut->z);
}else{
- rc = sqlite3BtreeData(u.bh.pCrsr, 0, u.bh.n, pOut->z);
+ rc = sqlite3BtreeData(u.bl.pCrsr, 0, u.bl.n, pOut->z);
}
pOut->enc = SQLITE_UTF8; /* In case the blob is ever cast to text */
UPDATE_MAX_BLOBSIZE(pOut);
@@ -64549,42 +69051,42 @@
** one opcode now works for both table types.
*/
case OP_Rowid: { /* out2-prerelease */
-#if 0 /* local variables moved into u.bi */
+#if 0 /* local variables moved into u.bm */
VdbeCursor *pC;
i64 v;
sqlite3_vtab *pVtab;
const sqlite3_module *pModule;
-#endif /* local variables moved into u.bi */
+#endif /* local variables moved into u.bm */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bi.pC = p->apCsr[pOp->p1];
- assert( u.bi.pC!=0 );
- assert( u.bi.pC->pseudoTableReg==0 );
- if( u.bi.pC->nullRow ){
+ u.bm.pC = p->apCsr[pOp->p1];
+ assert( u.bm.pC!=0 );
+ assert( u.bm.pC->pseudoTableReg==0 );
+ if( u.bm.pC->nullRow ){
pOut->flags = MEM_Null;
break;
- }else if( u.bi.pC->deferredMoveto ){
- u.bi.v = u.bi.pC->movetoTarget;
+ }else if( u.bm.pC->deferredMoveto ){
+ u.bm.v = u.bm.pC->movetoTarget;
#ifndef SQLITE_OMIT_VIRTUALTABLE
- }else if( u.bi.pC->pVtabCursor ){
- u.bi.pVtab = u.bi.pC->pVtabCursor->pVtab;
- u.bi.pModule = u.bi.pVtab->pModule;
- assert( u.bi.pModule->xRowid );
- rc = u.bi.pModule->xRowid(u.bi.pC->pVtabCursor, &u.bi.v);
- importVtabErrMsg(p, u.bi.pVtab);
+ }else if( u.bm.pC->pVtabCursor ){
+ u.bm.pVtab = u.bm.pC->pVtabCursor->pVtab;
+ u.bm.pModule = u.bm.pVtab->pModule;
+ assert( u.bm.pModule->xRowid );
+ rc = u.bm.pModule->xRowid(u.bm.pC->pVtabCursor, &u.bm.v);
+ importVtabErrMsg(p, u.bm.pVtab);
#endif /* SQLITE_OMIT_VIRTUALTABLE */
}else{
- assert( u.bi.pC->pCursor!=0 );
- rc = sqlite3VdbeCursorMoveto(u.bi.pC);
+ assert( u.bm.pC->pCursor!=0 );
+ rc = sqlite3VdbeCursorMoveto(u.bm.pC);
if( rc ) goto abort_due_to_error;
- if( u.bi.pC->rowidIsValid ){
- u.bi.v = u.bi.pC->lastRowid;
+ if( u.bm.pC->rowidIsValid ){
+ u.bm.v = u.bm.pC->lastRowid;
}else{
- rc = sqlite3BtreeKeySize(u.bi.pC->pCursor, &u.bi.v);
+ rc = sqlite3BtreeKeySize(u.bm.pC->pCursor, &u.bm.v);
assert( rc==SQLITE_OK ); /* Always so because of CursorMoveto() above */
}
}
- pOut->u.i = u.bi.v;
+ pOut->u.i = u.bm.v;
break;
}
@@ -64595,17 +69097,18 @@
** write a NULL.
*/
case OP_NullRow: {
-#if 0 /* local variables moved into u.bj */
+#if 0 /* local variables moved into u.bn */
VdbeCursor *pC;
-#endif /* local variables moved into u.bj */
+#endif /* local variables moved into u.bn */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bj.pC = p->apCsr[pOp->p1];
- assert( u.bj.pC!=0 );
- u.bj.pC->nullRow = 1;
- u.bj.pC->rowidIsValid = 0;
- if( u.bj.pC->pCursor ){
- sqlite3BtreeClearCursor(u.bj.pC->pCursor);
+ u.bn.pC = p->apCsr[pOp->p1];
+ assert( u.bn.pC!=0 );
+ u.bn.pC->nullRow = 1;
+ u.bn.pC->rowidIsValid = 0;
+ assert( u.bn.pC->pCursor || u.bn.pC->pVtabCursor );
+ if( u.bn.pC->pCursor ){
+ sqlite3BtreeClearCursor(u.bn.pC->pCursor);
}
break;
}
@@ -64619,26 +69122,25 @@
** to the following instruction.
*/
case OP_Last: { /* jump */
-#if 0 /* local variables moved into u.bk */
+#if 0 /* local variables moved into u.bo */
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
-#endif /* local variables moved into u.bk */
+#endif /* local variables moved into u.bo */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bk.pC = p->apCsr[pOp->p1];
- assert( u.bk.pC!=0 );
- u.bk.pCrsr = u.bk.pC->pCursor;
- if( u.bk.pCrsr==0 ){
- u.bk.res = 1;
- }else{
- rc = sqlite3BtreeLast(u.bk.pCrsr, &u.bk.res);
+ u.bo.pC = p->apCsr[pOp->p1];
+ assert( u.bo.pC!=0 );
+ u.bo.pCrsr = u.bo.pC->pCursor;
+ u.bo.res = 0;
+ if( ALWAYS(u.bo.pCrsr!=0) ){
+ rc = sqlite3BtreeLast(u.bo.pCrsr, &u.bo.res);
}
- u.bk.pC->nullRow = (u8)u.bk.res;
- u.bk.pC->deferredMoveto = 0;
- u.bk.pC->rowidIsValid = 0;
- u.bk.pC->cacheStatus = CACHE_STALE;
- if( pOp->p2>0 && u.bk.res ){
+ u.bo.pC->nullRow = (u8)u.bo.res;
+ u.bo.pC->deferredMoveto = 0;
+ u.bo.pC->rowidIsValid = 0;
+ u.bo.pC->cacheStatus = CACHE_STALE;
+ if( pOp->p2>0 && u.bo.res ){
pc = pOp->p2 - 1;
}
break;
@@ -64657,6 +69159,10 @@
** regression tests can determine whether or not the optimizer is
** correctly optimizing out sorts.
*/
+case OP_SorterSort: /* jump */
+#ifdef SQLITE_OMIT_MERGE_SORT
+ pOp->opcode = OP_Sort;
+#endif
case OP_Sort: { /* jump */
#ifdef SQLITE_TEST
sqlite3_sort_count++;
@@ -64674,32 +69180,37 @@
** to the following instruction.
*/
case OP_Rewind: { /* jump */
-#if 0 /* local variables moved into u.bl */
+#if 0 /* local variables moved into u.bp */
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
-#endif /* local variables moved into u.bl */
+#endif /* local variables moved into u.bp */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bl.pC = p->apCsr[pOp->p1];
- assert( u.bl.pC!=0 );
- u.bl.res = 1;
- if( (u.bl.pCrsr = u.bl.pC->pCursor)!=0 ){
- rc = sqlite3BtreeFirst(u.bl.pCrsr, &u.bl.res);
- u.bl.pC->atFirst = u.bl.res==0 ?1:0;
- u.bl.pC->deferredMoveto = 0;
- u.bl.pC->cacheStatus = CACHE_STALE;
- u.bl.pC->rowidIsValid = 0;
+ u.bp.pC = p->apCsr[pOp->p1];
+ assert( u.bp.pC!=0 );
+ assert( u.bp.pC->isSorter==(pOp->opcode==OP_SorterSort) );
+ u.bp.res = 1;
+ if( isSorter(u.bp.pC) ){
+ rc = sqlite3VdbeSorterRewind(db, u.bp.pC, &u.bp.res);
+ }else{
+ u.bp.pCrsr = u.bp.pC->pCursor;
+ assert( u.bp.pCrsr );
+ rc = sqlite3BtreeFirst(u.bp.pCrsr, &u.bp.res);
+ u.bp.pC->atFirst = u.bp.res==0 ?1:0;
+ u.bp.pC->deferredMoveto = 0;
+ u.bp.pC->cacheStatus = CACHE_STALE;
+ u.bp.pC->rowidIsValid = 0;
}
- u.bl.pC->nullRow = (u8)u.bl.res;
+ u.bp.pC->nullRow = (u8)u.bp.res;
assert( pOp->p2>0 && pOp->p2<p->nOp );
- if( u.bl.res ){
+ if( u.bp.res ){
pc = pOp->p2 - 1;
}
break;
}
-/* Opcode: Next P1 P2 * * P5
+/* Opcode: Next P1 P2 * P4 P5
**
** Advance cursor P1 so that it points to the next key/data pair in its
** table or index. If there are no more key/value pairs then fall through
@@ -64708,6 +69219,9 @@
**
** The P1 cursor must be for a real table, not a pseudo-table.
**
+** P4 is always of type P4_ADVANCE. The function pointer points to
+** sqlite3BtreeNext().
+**
** If P5 is positive and the jump is taken, then event counter
** number P5-1 in the prepared statement is incremented.
**
@@ -64722,49 +69236,58 @@
**
** The P1 cursor must be for a real table, not a pseudo-table.
**
+** P4 is always of type P4_ADVANCE. The function pointer points to
+** sqlite3BtreePrevious().
+**
** If P5 is positive and the jump is taken, then event counter
** number P5-1 in the prepared statement is incremented.
*/
+case OP_SorterNext: /* jump */
+#ifdef SQLITE_OMIT_MERGE_SORT
+ pOp->opcode = OP_Next;
+#endif
case OP_Prev: /* jump */
case OP_Next: { /* jump */
-#if 0 /* local variables moved into u.bm */
+#if 0 /* local variables moved into u.bq */
VdbeCursor *pC;
- BtCursor *pCrsr;
int res;
-#endif /* local variables moved into u.bm */
+#endif /* local variables moved into u.bq */
CHECK_FOR_INTERRUPT;
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
assert( pOp->p5<=ArraySize(p->aCounter) );
- u.bm.pC = p->apCsr[pOp->p1];
- if( u.bm.pC==0 ){
+ u.bq.pC = p->apCsr[pOp->p1];
+ if( u.bq.pC==0 ){
break; /* See ticket #2273 */
}
- u.bm.pCrsr = u.bm.pC->pCursor;
- if( u.bm.pCrsr==0 ){
- u.bm.pC->nullRow = 1;
- break;
+ assert( u.bq.pC->isSorter==(pOp->opcode==OP_SorterNext) );
+ if( isSorter(u.bq.pC) ){
+ assert( pOp->opcode==OP_SorterNext );
+ rc = sqlite3VdbeSorterNext(db, u.bq.pC, &u.bq.res);
+ }else{
+ u.bq.res = 1;
+ assert( u.bq.pC->deferredMoveto==0 );
+ assert( u.bq.pC->pCursor );
+ assert( pOp->opcode!=OP_Next || pOp->p4.xAdvance==sqlite3BtreeNext );
+ assert( pOp->opcode!=OP_Prev || pOp->p4.xAdvance==sqlite3BtreePrevious );
+ rc = pOp->p4.xAdvance(u.bq.pC->pCursor, &u.bq.res);
}
- u.bm.res = 1;
- assert( u.bm.pC->deferredMoveto==0 );
- rc = pOp->opcode==OP_Next ? sqlite3BtreeNext(u.bm.pCrsr, &u.bm.res) :
- sqlite3BtreePrevious(u.bm.pCrsr, &u.bm.res);
- u.bm.pC->nullRow = (u8)u.bm.res;
- u.bm.pC->cacheStatus = CACHE_STALE;
- if( u.bm.res==0 ){
+ u.bq.pC->nullRow = (u8)u.bq.res;
+ u.bq.pC->cacheStatus = CACHE_STALE;
+ if( u.bq.res==0 ){
pc = pOp->p2 - 1;
if( pOp->p5 ) p->aCounter[pOp->p5-1]++;
#ifdef SQLITE_TEST
sqlite3_search_count++;
#endif
}
- u.bm.pC->rowidIsValid = 0;
+ u.bq.pC->rowidIsValid = 0;
break;
}
/* Opcode: IdxInsert P1 P2 P3 * P5
**
-** Register P2 holds a SQL index key made using the
+** Register P2 holds an SQL index key made using the
** MakeRecord instructions. This opcode writes that key
** into the index P1. Data for the entry is nil.
**
@@ -64774,31 +69297,40 @@
** This instruction only works for indices. The equivalent instruction
** for tables is OP_Insert.
*/
+case OP_SorterInsert: /* in2 */
+#ifdef SQLITE_OMIT_MERGE_SORT
+ pOp->opcode = OP_IdxInsert;
+#endif
case OP_IdxInsert: { /* in2 */
-#if 0 /* local variables moved into u.bn */
+#if 0 /* local variables moved into u.br */
VdbeCursor *pC;
BtCursor *pCrsr;
int nKey;
const char *zKey;
-#endif /* local variables moved into u.bn */
+#endif /* local variables moved into u.br */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bn.pC = p->apCsr[pOp->p1];
- assert( u.bn.pC!=0 );
+ u.br.pC = p->apCsr[pOp->p1];
+ assert( u.br.pC!=0 );
+ assert( u.br.pC->isSorter==(pOp->opcode==OP_SorterInsert) );
pIn2 = &aMem[pOp->p2];
assert( pIn2->flags & MEM_Blob );
- u.bn.pCrsr = u.bn.pC->pCursor;
- if( ALWAYS(u.bn.pCrsr!=0) ){
- assert( u.bn.pC->isTable==0 );
+ u.br.pCrsr = u.br.pC->pCursor;
+ if( ALWAYS(u.br.pCrsr!=0) ){
+ assert( u.br.pC->isTable==0 );
rc = ExpandBlob(pIn2);
if( rc==SQLITE_OK ){
- u.bn.nKey = pIn2->n;
- u.bn.zKey = pIn2->z;
- rc = sqlite3BtreeInsert(u.bn.pCrsr, u.bn.zKey, u.bn.nKey, "", 0, 0, pOp->p3,
- ((pOp->p5 & OPFLAG_USESEEKRESULT) ? u.bn.pC->seekResult : 0)
- );
- assert( u.bn.pC->deferredMoveto==0 );
- u.bn.pC->cacheStatus = CACHE_STALE;
+ if( isSorter(u.br.pC) ){
+ rc = sqlite3VdbeSorterWrite(db, u.br.pC, pIn2);
+ }else{
+ u.br.nKey = pIn2->n;
+ u.br.zKey = pIn2->z;
+ rc = sqlite3BtreeInsert(u.br.pCrsr, u.br.zKey, u.br.nKey, "", 0, 0, pOp->p3,
+ ((pOp->p5 & OPFLAG_USESEEKRESULT) ? u.br.pC->seekResult : 0)
+ );
+ assert( u.br.pC->deferredMoveto==0 );
+ u.br.pC->cacheStatus = CACHE_STALE;
+ }
}
}
break;
@@ -64811,33 +69343,33 @@
** index opened by cursor P1.
*/
case OP_IdxDelete: {
-#if 0 /* local variables moved into u.bo */
+#if 0 /* local variables moved into u.bs */
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
UnpackedRecord r;
-#endif /* local variables moved into u.bo */
+#endif /* local variables moved into u.bs */
assert( pOp->p3>0 );
assert( pOp->p2>0 && pOp->p2+pOp->p3<=p->nMem+1 );
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bo.pC = p->apCsr[pOp->p1];
- assert( u.bo.pC!=0 );
- u.bo.pCrsr = u.bo.pC->pCursor;
- if( ALWAYS(u.bo.pCrsr!=0) ){
- u.bo.r.pKeyInfo = u.bo.pC->pKeyInfo;
- u.bo.r.nField = (u16)pOp->p3;
- u.bo.r.flags = 0;
- u.bo.r.aMem = &aMem[pOp->p2];
+ u.bs.pC = p->apCsr[pOp->p1];
+ assert( u.bs.pC!=0 );
+ u.bs.pCrsr = u.bs.pC->pCursor;
+ if( ALWAYS(u.bs.pCrsr!=0) ){
+ u.bs.r.pKeyInfo = u.bs.pC->pKeyInfo;
+ u.bs.r.nField = (u16)pOp->p3;
+ u.bs.r.flags = 0;
+ u.bs.r.aMem = &aMem[pOp->p2];
#ifdef SQLITE_DEBUG
- { int i; for(i=0; i<u.bo.r.nField; i++) assert( memIsValid(&u.bo.r.aMem[i]) ); }
+ { int i; for(i=0; i<u.bs.r.nField; i++) assert( memIsValid(&u.bs.r.aMem[i]) ); }
#endif
- rc = sqlite3BtreeMovetoUnpacked(u.bo.pCrsr, &u.bo.r, 0, 0, &u.bo.res);
- if( rc==SQLITE_OK && u.bo.res==0 ){
- rc = sqlite3BtreeDelete(u.bo.pCrsr);
+ rc = sqlite3BtreeMovetoUnpacked(u.bs.pCrsr, &u.bs.r, 0, 0, &u.bs.res);
+ if( rc==SQLITE_OK && u.bs.res==0 ){
+ rc = sqlite3BtreeDelete(u.bs.pCrsr);
}
- assert( u.bo.pC->deferredMoveto==0 );
- u.bo.pC->cacheStatus = CACHE_STALE;
+ assert( u.bs.pC->deferredMoveto==0 );
+ u.bs.pC->cacheStatus = CACHE_STALE;
}
break;
}
@@ -64851,28 +69383,28 @@
** See also: Rowid, MakeRecord.
*/
case OP_IdxRowid: { /* out2-prerelease */
-#if 0 /* local variables moved into u.bp */
+#if 0 /* local variables moved into u.bt */
BtCursor *pCrsr;
VdbeCursor *pC;
i64 rowid;
-#endif /* local variables moved into u.bp */
+#endif /* local variables moved into u.bt */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bp.pC = p->apCsr[pOp->p1];
- assert( u.bp.pC!=0 );
- u.bp.pCrsr = u.bp.pC->pCursor;
+ u.bt.pC = p->apCsr[pOp->p1];
+ assert( u.bt.pC!=0 );
+ u.bt.pCrsr = u.bt.pC->pCursor;
pOut->flags = MEM_Null;
- if( ALWAYS(u.bp.pCrsr!=0) ){
- rc = sqlite3VdbeCursorMoveto(u.bp.pC);
+ if( ALWAYS(u.bt.pCrsr!=0) ){
+ rc = sqlite3VdbeCursorMoveto(u.bt.pC);
if( NEVER(rc) ) goto abort_due_to_error;
- assert( u.bp.pC->deferredMoveto==0 );
- assert( u.bp.pC->isTable==0 );
- if( !u.bp.pC->nullRow ){
- rc = sqlite3VdbeIdxRowid(db, u.bp.pCrsr, &u.bp.rowid);
+ assert( u.bt.pC->deferredMoveto==0 );
+ assert( u.bt.pC->isTable==0 );
+ if( !u.bt.pC->nullRow ){
+ rc = sqlite3VdbeIdxRowid(db, u.bt.pCrsr, &u.bt.rowid);
if( rc!=SQLITE_OK ){
goto abort_due_to_error;
}
- pOut->u.i = u.bp.rowid;
+ pOut->u.i = u.bt.rowid;
pOut->flags = MEM_Int;
}
}
@@ -64907,39 +69439,39 @@
*/
case OP_IdxLT: /* jump */
case OP_IdxGE: { /* jump */
-#if 0 /* local variables moved into u.bq */
+#if 0 /* local variables moved into u.bu */
VdbeCursor *pC;
int res;
UnpackedRecord r;
-#endif /* local variables moved into u.bq */
+#endif /* local variables moved into u.bu */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bq.pC = p->apCsr[pOp->p1];
- assert( u.bq.pC!=0 );
- assert( u.bq.pC->isOrdered );
- if( ALWAYS(u.bq.pC->pCursor!=0) ){
- assert( u.bq.pC->deferredMoveto==0 );
+ u.bu.pC = p->apCsr[pOp->p1];
+ assert( u.bu.pC!=0 );
+ assert( u.bu.pC->isOrdered );
+ if( ALWAYS(u.bu.pC->pCursor!=0) ){
+ assert( u.bu.pC->deferredMoveto==0 );
assert( pOp->p5==0 || pOp->p5==1 );
assert( pOp->p4type==P4_INT32 );
- u.bq.r.pKeyInfo = u.bq.pC->pKeyInfo;
- u.bq.r.nField = (u16)pOp->p4.i;
+ u.bu.r.pKeyInfo = u.bu.pC->pKeyInfo;
+ u.bu.r.nField = (u16)pOp->p4.i;
if( pOp->p5 ){
- u.bq.r.flags = UNPACKED_INCRKEY | UNPACKED_IGNORE_ROWID;
+ u.bu.r.flags = UNPACKED_INCRKEY | UNPACKED_PREFIX_MATCH;
}else{
- u.bq.r.flags = UNPACKED_IGNORE_ROWID;
+ u.bu.r.flags = UNPACKED_PREFIX_MATCH;
}
- u.bq.r.aMem = &aMem[pOp->p3];
+ u.bu.r.aMem = &aMem[pOp->p3];
#ifdef SQLITE_DEBUG
- { int i; for(i=0; i<u.bq.r.nField; i++) assert( memIsValid(&u.bq.r.aMem[i]) ); }
+ { int i; for(i=0; i<u.bu.r.nField; i++) assert( memIsValid(&u.bu.r.aMem[i]) ); }
#endif
- rc = sqlite3VdbeIdxKeyCompare(u.bq.pC, &u.bq.r, &u.bq.res);
+ rc = sqlite3VdbeIdxKeyCompare(u.bu.pC, &u.bu.r, &u.bu.res);
if( pOp->opcode==OP_IdxLT ){
- u.bq.res = -u.bq.res;
+ u.bu.res = -u.bu.res;
}else{
assert( pOp->opcode==OP_IdxGE );
- u.bq.res++;
+ u.bu.res++;
}
- if( u.bq.res>0 ){
+ if( u.bu.res>0 ){
pc = pOp->p2 - 1 ;
}
}
@@ -64967,37 +69499,39 @@
** See also: Clear
*/
case OP_Destroy: { /* out2-prerelease */
-#if 0 /* local variables moved into u.br */
+#if 0 /* local variables moved into u.bv */
int iMoved;
int iCnt;
Vdbe *pVdbe;
int iDb;
-#endif /* local variables moved into u.br */
+#endif /* local variables moved into u.bv */
#ifndef SQLITE_OMIT_VIRTUALTABLE
- u.br.iCnt = 0;
- for(u.br.pVdbe=db->pVdbe; u.br.pVdbe; u.br.pVdbe = u.br.pVdbe->pNext){
- if( u.br.pVdbe->magic==VDBE_MAGIC_RUN && u.br.pVdbe->inVtabMethod<2 && u.br.pVdbe->pc>=0 ){
- u.br.iCnt++;
+ u.bv.iCnt = 0;
+ for(u.bv.pVdbe=db->pVdbe; u.bv.pVdbe; u.bv.pVdbe = u.bv.pVdbe->pNext){
+ if( u.bv.pVdbe->magic==VDBE_MAGIC_RUN && u.bv.pVdbe->inVtabMethod<2 && u.bv.pVdbe->pc>=0 ){
+ u.bv.iCnt++;
}
}
#else
- u.br.iCnt = db->activeVdbeCnt;
+ u.bv.iCnt = db->activeVdbeCnt;
#endif
pOut->flags = MEM_Null;
- if( u.br.iCnt>1 ){
+ if( u.bv.iCnt>1 ){
rc = SQLITE_LOCKED;
p->errorAction = OE_Abort;
}else{
- u.br.iDb = pOp->p3;
- assert( u.br.iCnt==1 );
- assert( (p->btreeMask & (1<<u.br.iDb))!=0 );
- rc = sqlite3BtreeDropTable(db->aDb[u.br.iDb].pBt, pOp->p1, &u.br.iMoved);
+ u.bv.iDb = pOp->p3;
+ assert( u.bv.iCnt==1 );
+ assert( (p->btreeMask & (((yDbMask)1)<<u.bv.iDb))!=0 );
+ rc = sqlite3BtreeDropTable(db->aDb[u.bv.iDb].pBt, pOp->p1, &u.bv.iMoved);
pOut->flags = MEM_Int;
- pOut->u.i = u.br.iMoved;
+ pOut->u.i = u.bv.iMoved;
#ifndef SQLITE_OMIT_AUTOVACUUM
- if( rc==SQLITE_OK && u.br.iMoved!=0 ){
- sqlite3RootPageMoved(&db->aDb[u.br.iDb], u.br.iMoved, pOp->p1);
- resetSchemaOnFault = 1;
+ if( rc==SQLITE_OK && u.bv.iMoved!=0 ){
+ sqlite3RootPageMoved(db, u.bv.iDb, u.bv.iMoved, pOp->p1);
+ /* All OP_Destroy operations occur on the same btree */
+ assert( resetSchemaOnFault==0 || resetSchemaOnFault==u.bv.iDb+1 );
+ resetSchemaOnFault = u.bv.iDb+1;
}
#endif
}
@@ -65023,21 +69557,21 @@
** See also: Destroy
*/
case OP_Clear: {
-#if 0 /* local variables moved into u.bs */
+#if 0 /* local variables moved into u.bw */
int nChange;
-#endif /* local variables moved into u.bs */
+#endif /* local variables moved into u.bw */
- u.bs.nChange = 0;
- assert( (p->btreeMask & (1<<pOp->p2))!=0 );
+ u.bw.nChange = 0;
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p2))!=0 );
rc = sqlite3BtreeClearTable(
- db->aDb[pOp->p2].pBt, pOp->p1, (pOp->p3 ? &u.bs.nChange : 0)
+ db->aDb[pOp->p2].pBt, pOp->p1, (pOp->p3 ? &u.bw.nChange : 0)
);
if( pOp->p3 ){
- p->nChange += u.bs.nChange;
+ p->nChange += u.bw.nChange;
if( pOp->p3>0 ){
assert( memIsValid(&aMem[pOp->p3]) );
memAboutToChange(p, &aMem[pOp->p3]);
- aMem[pOp->p3].u.i += u.bs.nChange;
+ aMem[pOp->p3].u.i += u.bw.nChange;
}
}
break;
@@ -65067,96 +69601,78 @@
*/
case OP_CreateIndex: /* out2-prerelease */
case OP_CreateTable: { /* out2-prerelease */
-#if 0 /* local variables moved into u.bt */
+#if 0 /* local variables moved into u.bx */
int pgno;
int flags;
Db *pDb;
-#endif /* local variables moved into u.bt */
+#endif /* local variables moved into u.bx */
- u.bt.pgno = 0;
+ u.bx.pgno = 0;
assert( pOp->p1>=0 && pOp->p1<db->nDb );
- assert( (p->btreeMask & (1<<pOp->p1))!=0 );
- u.bt.pDb = &db->aDb[pOp->p1];
- assert( u.bt.pDb->pBt!=0 );
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
+ u.bx.pDb = &db->aDb[pOp->p1];
+ assert( u.bx.pDb->pBt!=0 );
if( pOp->opcode==OP_CreateTable ){
- /* u.bt.flags = BTREE_INTKEY; */
- u.bt.flags = BTREE_INTKEY;
+ /* u.bx.flags = BTREE_INTKEY; */
+ u.bx.flags = BTREE_INTKEY;
}else{
- u.bt.flags = BTREE_BLOBKEY;
+ u.bx.flags = BTREE_BLOBKEY;
}
- rc = sqlite3BtreeCreateTable(u.bt.pDb->pBt, &u.bt.pgno, u.bt.flags);
- pOut->u.i = u.bt.pgno;
+ rc = sqlite3BtreeCreateTable(u.bx.pDb->pBt, &u.bx.pgno, u.bx.flags);
+ pOut->u.i = u.bx.pgno;
break;
}
-/* Opcode: ParseSchema P1 P2 * P4 *
+/* Opcode: ParseSchema P1 * * P4 *
**
** Read and parse all entries from the SQLITE_MASTER table of database P1
-** that match the WHERE clause P4. P2 is the "force" flag. Always do
-** the parsing if P2 is true. If P2 is false, then this routine is a
-** no-op if the schema is not currently loaded. In other words, if P2
-** is false, the SQLITE_MASTER table is only parsed if the rest of the
-** schema is already loaded into the symbol table.
+** that match the WHERE clause P4.
**
** This opcode invokes the parser to create a new virtual machine,
** then runs the new virtual machine. It is thus a re-entrant opcode.
*/
case OP_ParseSchema: {
-#if 0 /* local variables moved into u.bu */
+#if 0 /* local variables moved into u.by */
int iDb;
const char *zMaster;
char *zSql;
InitData initData;
-#endif /* local variables moved into u.bu */
+#endif /* local variables moved into u.by */
- u.bu.iDb = pOp->p1;
- assert( u.bu.iDb>=0 && u.bu.iDb<db->nDb );
-
- /* If pOp->p2 is 0, then this opcode is being executed to read a
- ** single row, for example the row corresponding to a new index
- ** created by this VDBE, from the sqlite_master table. It only
- ** does this if the corresponding in-memory schema is currently
- ** loaded. Otherwise, the new index definition can be loaded along
- ** with the rest of the schema when it is required.
- **
- ** Although the mutex on the BtShared object that corresponds to
- ** database u.bu.iDb (the database containing the sqlite_master table
- ** read by this instruction) is currently held, it is necessary to
- ** obtain the mutexes on all attached databases before checking if
- ** the schema of u.bu.iDb is loaded. This is because, at the start of
- ** the sqlite3_exec() call below, SQLite will invoke
- ** sqlite3BtreeEnterAll(). If all mutexes are not already held, the
- ** u.bu.iDb mutex may be temporarily released to avoid deadlock. If
- ** this happens, then some other thread may delete the in-memory
- ** schema of database u.bu.iDb before the SQL statement runs. The schema
- ** will not be reloaded becuase the db->init.busy flag is set. This
- ** can result in a "no such table: sqlite_master" or "malformed
- ** database schema" error being returned to the user.
+ /* Any prepared statement that invokes this opcode will hold mutexes
+ ** on every btree. This is a prerequisite for invoking
+ ** sqlite3InitCallback().
*/
- assert( sqlite3BtreeHoldsMutex(db->aDb[u.bu.iDb].pBt) );
- sqlite3BtreeEnterAll(db);
- if( pOp->p2 || DbHasProperty(db, u.bu.iDb, DB_SchemaLoaded) ){
- u.bu.zMaster = SCHEMA_TABLE(u.bu.iDb);
- u.bu.initData.db = db;
- u.bu.initData.iDb = pOp->p1;
- u.bu.initData.pzErrMsg = &p->zErrMsg;
- u.bu.zSql = sqlite3MPrintf(db,
+#ifdef SQLITE_DEBUG
+ for(u.by.iDb=0; u.by.iDb<db->nDb; u.by.iDb++){
+ assert( u.by.iDb==1 || sqlite3BtreeHoldsMutex(db->aDb[u.by.iDb].pBt) );
+ }
+#endif
+
+ u.by.iDb = pOp->p1;
+ assert( u.by.iDb>=0 && u.by.iDb<db->nDb );
+ assert( DbHasProperty(db, u.by.iDb, DB_SchemaLoaded) );
+ /* Used to be a conditional */ {
+ u.by.zMaster = SCHEMA_TABLE(u.by.iDb);
+ u.by.initData.db = db;
+ u.by.initData.iDb = pOp->p1;
+ u.by.initData.pzErrMsg = &p->zErrMsg;
+ u.by.zSql = sqlite3MPrintf(db,
"SELECT name, rootpage, sql FROM '%q'.%s WHERE %s ORDER BY rowid",
- db->aDb[u.bu.iDb].zName, u.bu.zMaster, pOp->p4.z);
- if( u.bu.zSql==0 ){
+ db->aDb[u.by.iDb].zName, u.by.zMaster, pOp->p4.z);
+ if( u.by.zSql==0 ){
rc = SQLITE_NOMEM;
}else{
assert( db->init.busy==0 );
db->init.busy = 1;
- u.bu.initData.rc = SQLITE_OK;
+ u.by.initData.rc = SQLITE_OK;
assert( !db->mallocFailed );
- rc = sqlite3_exec(db, u.bu.zSql, sqlite3InitCallback, &u.bu.initData, 0);
- if( rc==SQLITE_OK ) rc = u.bu.initData.rc;
- sqlite3DbFree(db, u.bu.zSql);
+ rc = sqlite3_exec(db, u.by.zSql, sqlite3InitCallback, &u.by.initData, 0);
+ if( rc==SQLITE_OK ) rc = u.by.initData.rc;
+ sqlite3DbFree(db, u.by.zSql);
db->init.busy = 0;
}
}
- sqlite3BtreeLeaveAll(db);
if( rc==SQLITE_NOMEM ){
goto no_mem;
}
@@ -65236,41 +69752,41 @@
** This opcode is used to implement the integrity_check pragma.
*/
case OP_IntegrityCk: {
-#if 0 /* local variables moved into u.bv */
+#if 0 /* local variables moved into u.bz */
int nRoot; /* Number of tables to check. (Number of root pages.) */
int *aRoot; /* Array of rootpage numbers for tables to be checked */
int j; /* Loop counter */
int nErr; /* Number of errors reported */
char *z; /* Text of the error report */
Mem *pnErr; /* Register keeping track of errors remaining */
-#endif /* local variables moved into u.bv */
+#endif /* local variables moved into u.bz */
- u.bv.nRoot = pOp->p2;
- assert( u.bv.nRoot>0 );
- u.bv.aRoot = sqlite3DbMallocRaw(db, sizeof(int)*(u.bv.nRoot+1) );
- if( u.bv.aRoot==0 ) goto no_mem;
+ u.bz.nRoot = pOp->p2;
+ assert( u.bz.nRoot>0 );
+ u.bz.aRoot = sqlite3DbMallocRaw(db, sizeof(int)*(u.bz.nRoot+1) );
+ if( u.bz.aRoot==0 ) goto no_mem;
assert( pOp->p3>0 && pOp->p3<=p->nMem );
- u.bv.pnErr = &aMem[pOp->p3];
- assert( (u.bv.pnErr->flags & MEM_Int)!=0 );
- assert( (u.bv.pnErr->flags & (MEM_Str|MEM_Blob))==0 );
+ u.bz.pnErr = &aMem[pOp->p3];
+ assert( (u.bz.pnErr->flags & MEM_Int)!=0 );
+ assert( (u.bz.pnErr->flags & (MEM_Str|MEM_Blob))==0 );
pIn1 = &aMem[pOp->p1];
- for(u.bv.j=0; u.bv.j<u.bv.nRoot; u.bv.j++){
- u.bv.aRoot[u.bv.j] = (int)sqlite3VdbeIntValue(&pIn1[u.bv.j]);
+ for(u.bz.j=0; u.bz.j<u.bz.nRoot; u.bz.j++){
+ u.bz.aRoot[u.bz.j] = (int)sqlite3VdbeIntValue(&pIn1[u.bz.j]);
}
- u.bv.aRoot[u.bv.j] = 0;
+ u.bz.aRoot[u.bz.j] = 0;
assert( pOp->p5<db->nDb );
- assert( (p->btreeMask & (1<<pOp->p5))!=0 );
- u.bv.z = sqlite3BtreeIntegrityCheck(db->aDb[pOp->p5].pBt, u.bv.aRoot, u.bv.nRoot,
- (int)u.bv.pnErr->u.i, &u.bv.nErr);
- sqlite3DbFree(db, u.bv.aRoot);
- u.bv.pnErr->u.i -= u.bv.nErr;
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p5))!=0 );
+ u.bz.z = sqlite3BtreeIntegrityCheck(db->aDb[pOp->p5].pBt, u.bz.aRoot, u.bz.nRoot,
+ (int)u.bz.pnErr->u.i, &u.bz.nErr);
+ sqlite3DbFree(db, u.bz.aRoot);
+ u.bz.pnErr->u.i -= u.bz.nErr;
sqlite3VdbeMemSetNull(pIn1);
- if( u.bv.nErr==0 ){
- assert( u.bv.z==0 );
- }else if( u.bv.z==0 ){
+ if( u.bz.nErr==0 ){
+ assert( u.bz.z==0 );
+ }else if( u.bz.z==0 ){
goto no_mem;
}else{
- sqlite3VdbeMemSetStr(pIn1, u.bv.z, -1, SQLITE_UTF8, sqlite3_free);
+ sqlite3VdbeMemSetStr(pIn1, u.bz.z, -1, SQLITE_UTF8, sqlite3_free);
}
UPDATE_MAX_BLOBSIZE(pIn1);
sqlite3VdbeChangeEncoding(pIn1, encoding);
@@ -65304,20 +69820,20 @@
** unchanged and jump to instruction P2.
*/
case OP_RowSetRead: { /* jump, in1, out3 */
-#if 0 /* local variables moved into u.bw */
+#if 0 /* local variables moved into u.ca */
i64 val;
-#endif /* local variables moved into u.bw */
+#endif /* local variables moved into u.ca */
CHECK_FOR_INTERRUPT;
pIn1 = &aMem[pOp->p1];
if( (pIn1->flags & MEM_RowSet)==0
- || sqlite3RowSetNext(pIn1->u.pRowSet, &u.bw.val)==0
+ || sqlite3RowSetNext(pIn1->u.pRowSet, &u.ca.val)==0
){
/* The boolean index is empty */
sqlite3VdbeMemSetNull(pIn1);
pc = pOp->p2 - 1;
}else{
/* A value was pulled from the index */
- sqlite3VdbeMemSetInt64(&aMem[pOp->p3], u.bw.val);
+ sqlite3VdbeMemSetInt64(&aMem[pOp->p3], u.ca.val);
}
break;
}
@@ -65346,14 +69862,14 @@
** inserted as part of some other set).
*/
case OP_RowSetTest: { /* jump, in1, in3 */
-#if 0 /* local variables moved into u.bx */
+#if 0 /* local variables moved into u.cb */
int iSet;
int exists;
-#endif /* local variables moved into u.bx */
+#endif /* local variables moved into u.cb */
pIn1 = &aMem[pOp->p1];
pIn3 = &aMem[pOp->p3];
- u.bx.iSet = pOp->p4.i;
+ u.cb.iSet = pOp->p4.i;
assert( pIn3->flags&MEM_Int );
/* If there is anything other than a rowset object in memory cell P1,
@@ -65365,17 +69881,17 @@
}
assert( pOp->p4type==P4_INT32 );
- assert( u.bx.iSet==-1 || u.bx.iSet>=0 );
- if( u.bx.iSet ){
- u.bx.exists = sqlite3RowSetTest(pIn1->u.pRowSet,
- (u8)(u.bx.iSet>=0 ? u.bx.iSet & 0xf : 0xff),
+ assert( u.cb.iSet==-1 || u.cb.iSet>=0 );
+ if( u.cb.iSet ){
+ u.cb.exists = sqlite3RowSetTest(pIn1->u.pRowSet,
+ (u8)(u.cb.iSet>=0 ? u.cb.iSet & 0xf : 0xff),
pIn3->u.i);
- if( u.bx.exists ){
+ if( u.cb.exists ){
pc = pOp->p2 - 1;
break;
}
}
- if( u.bx.iSet>=0 ){
+ if( u.cb.iSet>=0 ){
sqlite3RowSetInsert(pIn1->u.pRowSet, pIn3->u.i);
}
break;
@@ -65398,7 +69914,7 @@
** P4 is a pointer to the VM containing the trigger program.
*/
case OP_Program: { /* jump */
-#if 0 /* local variables moved into u.by */
+#if 0 /* local variables moved into u.cc */
int nMem; /* Number of memory registers for sub-program */
int nByte; /* Bytes of runtime space required for sub-program */
Mem *pRt; /* Register to allocate runtime space */
@@ -65407,12 +69923,11 @@
VdbeFrame *pFrame; /* New vdbe frame to execute in */
SubProgram *pProgram; /* Sub-program to execute */
void *t; /* Token identifying trigger */
-#endif /* local variables moved into u.by */
+#endif /* local variables moved into u.cc */
- u.by.pProgram = pOp->p4.pProgram;
- u.by.pRt = &aMem[pOp->p3];
- assert( memIsValid(u.by.pRt) );
- assert( u.by.pProgram->nOp>0 );
+ u.cc.pProgram = pOp->p4.pProgram;
+ u.cc.pRt = &aMem[pOp->p3];
+ assert( u.cc.pProgram->nOp>0 );
/* If the p5 flag is clear, then recursive invocation of triggers is
** disabled for backwards compatibility (p5 is set if this sub-program
@@ -65426,9 +69941,9 @@
** single trigger all have the same value for the SubProgram.token
** variable. */
if( pOp->p5 ){
- u.by.t = u.by.pProgram->token;
- for(u.by.pFrame=p->pFrame; u.by.pFrame && u.by.pFrame->token!=u.by.t; u.by.pFrame=u.by.pFrame->pParent);
- if( u.by.pFrame ) break;
+ u.cc.t = u.cc.pProgram->token;
+ for(u.cc.pFrame=p->pFrame; u.cc.pFrame && u.cc.pFrame->token!=u.cc.t; u.cc.pFrame=u.cc.pFrame->pParent);
+ if( u.cc.pFrame ) break;
}
if( p->nFrame>=db->aLimit[SQLITE_LIMIT_TRIGGER_DEPTH] ){
@@ -65437,65 +69952,72 @@
break;
}
- /* Register u.by.pRt is used to store the memory required to save the state
+ /* Register u.cc.pRt is used to store the memory required to save the state
** of the current program, and the memory required at runtime to execute
- ** the trigger program. If this trigger has been fired before, then u.by.pRt
+ ** the trigger program. If this trigger has been fired before, then u.cc.pRt
** is already allocated. Otherwise, it must be initialized. */
- if( (u.by.pRt->flags&MEM_Frame)==0 ){
+ if( (u.cc.pRt->flags&MEM_Frame)==0 ){
/* SubProgram.nMem is set to the number of memory cells used by the
** program stored in SubProgram.aOp. As well as these, one memory
** cell is required for each cursor used by the program. Set local
- ** variable u.by.nMem (and later, VdbeFrame.nChildMem) to this value.
+ ** variable u.cc.nMem (and later, VdbeFrame.nChildMem) to this value.
*/
- u.by.nMem = u.by.pProgram->nMem + u.by.pProgram->nCsr;
- u.by.nByte = ROUND8(sizeof(VdbeFrame))
- + u.by.nMem * sizeof(Mem)
- + u.by.pProgram->nCsr * sizeof(VdbeCursor *);
- u.by.pFrame = sqlite3DbMallocZero(db, u.by.nByte);
- if( !u.by.pFrame ){
+ u.cc.nMem = u.cc.pProgram->nMem + u.cc.pProgram->nCsr;
+ u.cc.nByte = ROUND8(sizeof(VdbeFrame))
+ + u.cc.nMem * sizeof(Mem)
+ + u.cc.pProgram->nCsr * sizeof(VdbeCursor *)
+ + u.cc.pProgram->nOnce * sizeof(u8);
+ u.cc.pFrame = sqlite3DbMallocZero(db, u.cc.nByte);
+ if( !u.cc.pFrame ){
goto no_mem;
}
- sqlite3VdbeMemRelease(u.by.pRt);
- u.by.pRt->flags = MEM_Frame;
- u.by.pRt->u.pFrame = u.by.pFrame;
+ sqlite3VdbeMemRelease(u.cc.pRt);
+ u.cc.pRt->flags = MEM_Frame;
+ u.cc.pRt->u.pFrame = u.cc.pFrame;
- u.by.pFrame->v = p;
- u.by.pFrame->nChildMem = u.by.nMem;
- u.by.pFrame->nChildCsr = u.by.pProgram->nCsr;
- u.by.pFrame->pc = pc;
- u.by.pFrame->aMem = p->aMem;
- u.by.pFrame->nMem = p->nMem;
- u.by.pFrame->apCsr = p->apCsr;
- u.by.pFrame->nCursor = p->nCursor;
- u.by.pFrame->aOp = p->aOp;
- u.by.pFrame->nOp = p->nOp;
- u.by.pFrame->token = u.by.pProgram->token;
+ u.cc.pFrame->v = p;
+ u.cc.pFrame->nChildMem = u.cc.nMem;
+ u.cc.pFrame->nChildCsr = u.cc.pProgram->nCsr;
+ u.cc.pFrame->pc = pc;
+ u.cc.pFrame->aMem = p->aMem;
+ u.cc.pFrame->nMem = p->nMem;
+ u.cc.pFrame->apCsr = p->apCsr;
+ u.cc.pFrame->nCursor = p->nCursor;
+ u.cc.pFrame->aOp = p->aOp;
+ u.cc.pFrame->nOp = p->nOp;
+ u.cc.pFrame->token = u.cc.pProgram->token;
+ u.cc.pFrame->aOnceFlag = p->aOnceFlag;
+ u.cc.pFrame->nOnceFlag = p->nOnceFlag;
- u.by.pEnd = &VdbeFrameMem(u.by.pFrame)[u.by.pFrame->nChildMem];
- for(u.by.pMem=VdbeFrameMem(u.by.pFrame); u.by.pMem!=u.by.pEnd; u.by.pMem++){
- u.by.pMem->flags = MEM_Null;
- u.by.pMem->db = db;
+ u.cc.pEnd = &VdbeFrameMem(u.cc.pFrame)[u.cc.pFrame->nChildMem];
+ for(u.cc.pMem=VdbeFrameMem(u.cc.pFrame); u.cc.pMem!=u.cc.pEnd; u.cc.pMem++){
+ u.cc.pMem->flags = MEM_Invalid;
+ u.cc.pMem->db = db;
}
}else{
- u.by.pFrame = u.by.pRt->u.pFrame;
- assert( u.by.pProgram->nMem+u.by.pProgram->nCsr==u.by.pFrame->nChildMem );
- assert( u.by.pProgram->nCsr==u.by.pFrame->nChildCsr );
- assert( pc==u.by.pFrame->pc );
+ u.cc.pFrame = u.cc.pRt->u.pFrame;
+ assert( u.cc.pProgram->nMem+u.cc.pProgram->nCsr==u.cc.pFrame->nChildMem );
+ assert( u.cc.pProgram->nCsr==u.cc.pFrame->nChildCsr );
+ assert( pc==u.cc.pFrame->pc );
}
p->nFrame++;
- u.by.pFrame->pParent = p->pFrame;
- u.by.pFrame->lastRowid = db->lastRowid;
- u.by.pFrame->nChange = p->nChange;
+ u.cc.pFrame->pParent = p->pFrame;
+ u.cc.pFrame->lastRowid = lastRowid;
+ u.cc.pFrame->nChange = p->nChange;
p->nChange = 0;
- p->pFrame = u.by.pFrame;
- p->aMem = aMem = &VdbeFrameMem(u.by.pFrame)[-1];
- p->nMem = u.by.pFrame->nChildMem;
- p->nCursor = (u16)u.by.pFrame->nChildCsr;
+ p->pFrame = u.cc.pFrame;
+ p->aMem = aMem = &VdbeFrameMem(u.cc.pFrame)[-1];
+ p->nMem = u.cc.pFrame->nChildMem;
+ p->nCursor = (u16)u.cc.pFrame->nChildCsr;
p->apCsr = (VdbeCursor **)&aMem[p->nMem+1];
- p->aOp = aOp = u.by.pProgram->aOp;
- p->nOp = u.by.pProgram->nOp;
+ p->aOp = aOp = u.cc.pProgram->aOp;
+ p->nOp = u.cc.pProgram->nOp;
+ p->aOnceFlag = (u8 *)&p->apCsr[p->nCursor];
+ p->nOnceFlag = u.cc.pProgram->nOnce;
+ p->nOp = u.cc.pProgram->nOp;
pc = -1;
+ memset(p->aOnceFlag, 0, p->nOnceFlag);
break;
}
@@ -65513,13 +70035,13 @@
** calling OP_Program instruction.
*/
case OP_Param: { /* out2-prerelease */
-#if 0 /* local variables moved into u.bz */
+#if 0 /* local variables moved into u.cd */
VdbeFrame *pFrame;
Mem *pIn;
-#endif /* local variables moved into u.bz */
- u.bz.pFrame = p->pFrame;
- u.bz.pIn = &u.bz.pFrame->aMem[pOp->p1 + u.bz.pFrame->aOp[u.bz.pFrame->pc].p1];
- sqlite3VdbeMemShallowCopy(pOut, u.bz.pIn, MEM_Ephem);
+#endif /* local variables moved into u.cd */
+ u.cd.pFrame = p->pFrame;
+ u.cd.pIn = &u.cd.pFrame->aMem[pOp->p1 + u.cd.pFrame->aOp[u.cd.pFrame->pc].p1];
+ sqlite3VdbeMemShallowCopy(pOut, u.cd.pIn, MEM_Ephem);
break;
}
@@ -65575,22 +70097,22 @@
** an integer.
*/
case OP_MemMax: { /* in2 */
-#if 0 /* local variables moved into u.ca */
+#if 0 /* local variables moved into u.ce */
Mem *pIn1;
VdbeFrame *pFrame;
-#endif /* local variables moved into u.ca */
+#endif /* local variables moved into u.ce */
if( p->pFrame ){
- for(u.ca.pFrame=p->pFrame; u.ca.pFrame->pParent; u.ca.pFrame=u.ca.pFrame->pParent);
- u.ca.pIn1 = &u.ca.pFrame->aMem[pOp->p1];
+ for(u.ce.pFrame=p->pFrame; u.ce.pFrame->pParent; u.ce.pFrame=u.ce.pFrame->pParent);
+ u.ce.pIn1 = &u.ce.pFrame->aMem[pOp->p1];
}else{
- u.ca.pIn1 = &aMem[pOp->p1];
+ u.ce.pIn1 = &aMem[pOp->p1];
}
- assert( memIsValid(u.ca.pIn1) );
- sqlite3VdbeMemIntegerify(u.ca.pIn1);
+ assert( memIsValid(u.ce.pIn1) );
+ sqlite3VdbeMemIntegerify(u.ce.pIn1);
pIn2 = &aMem[pOp->p2];
sqlite3VdbeMemIntegerify(pIn2);
- if( u.ca.pIn1->u.i<pIn2->u.i){
- u.ca.pIn1->u.i = pIn2->u.i;
+ if( u.ce.pIn1->u.i<pIn2->u.i){
+ u.ce.pIn1->u.i = pIn2->u.i;
}
break;
}
@@ -65657,49 +70179,51 @@
** successors.
*/
case OP_AggStep: {
-#if 0 /* local variables moved into u.cb */
+#if 0 /* local variables moved into u.cf */
int n;
int i;
Mem *pMem;
Mem *pRec;
sqlite3_context ctx;
sqlite3_value **apVal;
-#endif /* local variables moved into u.cb */
+#endif /* local variables moved into u.cf */
- u.cb.n = pOp->p5;
- assert( u.cb.n>=0 );
- u.cb.pRec = &aMem[pOp->p2];
- u.cb.apVal = p->apArg;
- assert( u.cb.apVal || u.cb.n==0 );
- for(u.cb.i=0; u.cb.i<u.cb.n; u.cb.i++, u.cb.pRec++){
- assert( memIsValid(u.cb.pRec) );
- u.cb.apVal[u.cb.i] = u.cb.pRec;
- memAboutToChange(p, u.cb.pRec);
- sqlite3VdbeMemStoreType(u.cb.pRec);
+ u.cf.n = pOp->p5;
+ assert( u.cf.n>=0 );
+ u.cf.pRec = &aMem[pOp->p2];
+ u.cf.apVal = p->apArg;
+ assert( u.cf.apVal || u.cf.n==0 );
+ for(u.cf.i=0; u.cf.i<u.cf.n; u.cf.i++, u.cf.pRec++){
+ assert( memIsValid(u.cf.pRec) );
+ u.cf.apVal[u.cf.i] = u.cf.pRec;
+ memAboutToChange(p, u.cf.pRec);
+ sqlite3VdbeMemStoreType(u.cf.pRec);
}
- u.cb.ctx.pFunc = pOp->p4.pFunc;
+ u.cf.ctx.pFunc = pOp->p4.pFunc;
assert( pOp->p3>0 && pOp->p3<=p->nMem );
- u.cb.ctx.pMem = u.cb.pMem = &aMem[pOp->p3];
- u.cb.pMem->n++;
- u.cb.ctx.s.flags = MEM_Null;
- u.cb.ctx.s.z = 0;
- u.cb.ctx.s.zMalloc = 0;
- u.cb.ctx.s.xDel = 0;
- u.cb.ctx.s.db = db;
- u.cb.ctx.isError = 0;
- u.cb.ctx.pColl = 0;
- if( u.cb.ctx.pFunc->flags & SQLITE_FUNC_NEEDCOLL ){
+ u.cf.ctx.pMem = u.cf.pMem = &aMem[pOp->p3];
+ u.cf.pMem->n++;
+ u.cf.ctx.s.flags = MEM_Null;
+ u.cf.ctx.s.z = 0;
+ u.cf.ctx.s.zMalloc = 0;
+ u.cf.ctx.s.xDel = 0;
+ u.cf.ctx.s.db = db;
+ u.cf.ctx.isError = 0;
+ u.cf.ctx.pColl = 0;
+ if( u.cf.ctx.pFunc->flags & SQLITE_FUNC_NEEDCOLL ){
assert( pOp>p->aOp );
assert( pOp[-1].p4type==P4_COLLSEQ );
assert( pOp[-1].opcode==OP_CollSeq );
- u.cb.ctx.pColl = pOp[-1].p4.pColl;
+ u.cf.ctx.pColl = pOp[-1].p4.pColl;
}
- (u.cb.ctx.pFunc->xStep)(&u.cb.ctx, u.cb.n, u.cb.apVal); /* IMP: R-24505-23230 */
- if( u.cb.ctx.isError ){
- sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(&u.cb.ctx.s));
- rc = u.cb.ctx.isError;
+ (u.cf.ctx.pFunc->xStep)(&u.cf.ctx, u.cf.n, u.cf.apVal); /* IMP: R-24505-23230 */
+ if( u.cf.ctx.isError ){
+ sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(&u.cf.ctx.s));
+ rc = u.cf.ctx.isError;
}
- sqlite3VdbeMemRelease(&u.cb.ctx.s);
+
+ sqlite3VdbeMemRelease(&u.cf.ctx.s);
+
break;
}
@@ -65716,32 +70240,57 @@
** the step function was not previously called.
*/
case OP_AggFinal: {
-#if 0 /* local variables moved into u.cc */
+#if 0 /* local variables moved into u.cg */
Mem *pMem;
-#endif /* local variables moved into u.cc */
+#endif /* local variables moved into u.cg */
assert( pOp->p1>0 && pOp->p1<=p->nMem );
- u.cc.pMem = &aMem[pOp->p1];
- assert( (u.cc.pMem->flags & ~(MEM_Null|MEM_Agg))==0 );
- rc = sqlite3VdbeMemFinalize(u.cc.pMem, pOp->p4.pFunc);
+ u.cg.pMem = &aMem[pOp->p1];
+ assert( (u.cg.pMem->flags & ~(MEM_Null|MEM_Agg))==0 );
+ rc = sqlite3VdbeMemFinalize(u.cg.pMem, pOp->p4.pFunc);
if( rc ){
- sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(u.cc.pMem));
+ sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(u.cg.pMem));
}
- sqlite3VdbeChangeEncoding(u.cc.pMem, encoding);
- UPDATE_MAX_BLOBSIZE(u.cc.pMem);
- if( sqlite3VdbeMemTooBig(u.cc.pMem) ){
+ sqlite3VdbeChangeEncoding(u.cg.pMem, encoding);
+ UPDATE_MAX_BLOBSIZE(u.cg.pMem);
+ if( sqlite3VdbeMemTooBig(u.cg.pMem) ){
goto too_big;
}
break;
}
#ifndef SQLITE_OMIT_WAL
-/* Opcode: Checkpoint P1 * * * *
+/* Opcode: Checkpoint P1 P2 P3 * *
**
** Checkpoint database P1. This is a no-op if P1 is not currently in
-** WAL mode.
+** WAL mode. Parameter P2 is one of SQLITE_CHECKPOINT_PASSIVE, FULL
+** or RESTART. Write 1 or 0 into mem[P3] if the checkpoint returns
+** SQLITE_BUSY or not, respectively. Write the number of pages in the
+** WAL after the checkpoint into mem[P3+1] and the number of pages
+** in the WAL that have been checkpointed after the checkpoint
+** completes into mem[P3+2]. However on an error, mem[P3+1] and
+** mem[P3+2] are initialized to -1.
*/
case OP_Checkpoint: {
- rc = sqlite3Checkpoint(db, pOp->p1);
+#if 0 /* local variables moved into u.ch */
+ int i; /* Loop counter */
+ int aRes[3]; /* Results */
+ Mem *pMem; /* Write results here */
+#endif /* local variables moved into u.ch */
+
+ u.ch.aRes[0] = 0;
+ u.ch.aRes[1] = u.ch.aRes[2] = -1;
+ assert( pOp->p2==SQLITE_CHECKPOINT_PASSIVE
+ || pOp->p2==SQLITE_CHECKPOINT_FULL
+ || pOp->p2==SQLITE_CHECKPOINT_RESTART
+ );
+ rc = sqlite3Checkpoint(db, pOp->p1, pOp->p2, &u.ch.aRes[1], &u.ch.aRes[2]);
+ if( rc==SQLITE_BUSY ){
+ rc = SQLITE_OK;
+ u.ch.aRes[0] = 1;
+ }
+ for(u.ch.i=0, u.ch.pMem = &aMem[pOp->p3]; u.ch.i<3; u.ch.i++, u.ch.pMem++){
+ sqlite3VdbeMemSetInt64(u.ch.pMem, (i64)u.ch.aRes[u.ch.i]);
+ }
break;
};
#endif
@@ -65759,110 +70308,91 @@
** Write a string containing the final journal-mode to register P2.
*/
case OP_JournalMode: { /* out2-prerelease */
-#if 0 /* local variables moved into u.cd */
+#if 0 /* local variables moved into u.ci */
Btree *pBt; /* Btree to change journal mode of */
Pager *pPager; /* Pager associated with pBt */
int eNew; /* New journal mode */
int eOld; /* The old journal mode */
const char *zFilename; /* Name of database file for pPager */
-#endif /* local variables moved into u.cd */
+#endif /* local variables moved into u.ci */
- u.cd.eNew = pOp->p3;
- assert( u.cd.eNew==PAGER_JOURNALMODE_DELETE
- || u.cd.eNew==PAGER_JOURNALMODE_TRUNCATE
- || u.cd.eNew==PAGER_JOURNALMODE_PERSIST
- || u.cd.eNew==PAGER_JOURNALMODE_OFF
- || u.cd.eNew==PAGER_JOURNALMODE_MEMORY
- || u.cd.eNew==PAGER_JOURNALMODE_WAL
- || u.cd.eNew==PAGER_JOURNALMODE_QUERY
+ u.ci.eNew = pOp->p3;
+ assert( u.ci.eNew==PAGER_JOURNALMODE_DELETE
+ || u.ci.eNew==PAGER_JOURNALMODE_TRUNCATE
+ || u.ci.eNew==PAGER_JOURNALMODE_PERSIST
+ || u.ci.eNew==PAGER_JOURNALMODE_OFF
+ || u.ci.eNew==PAGER_JOURNALMODE_MEMORY
+ || u.ci.eNew==PAGER_JOURNALMODE_WAL
+ || u.ci.eNew==PAGER_JOURNALMODE_QUERY
);
assert( pOp->p1>=0 && pOp->p1<db->nDb );
- /* This opcode is used in two places: PRAGMA journal_mode and ATTACH.
- ** In PRAGMA journal_mode, the sqlite3VdbeUsesBtree() routine is called
- ** when the statment is prepared and so p->aMutex.nMutex>0. All mutexes
- ** are already acquired. But when used in ATTACH, sqlite3VdbeUsesBtree()
- ** is not called when the statement is prepared because it requires the
- ** iDb index of the database as a parameter, and the database has not
- ** yet been attached so that index is unavailable. We have to wait
- ** until runtime (now) to get the mutex on the newly attached database.
- ** No other mutexes are required by the ATTACH command so this is safe
- ** to do.
- */
- assert( (p->btreeMask & (1<<pOp->p1))!=0 || p->aMutex.nMutex==0 );
- if( p->aMutex.nMutex==0 ){
- /* This occurs right after ATTACH. Get a mutex on the newly ATTACHed
- ** database. */
- sqlite3VdbeUsesBtree(p, pOp->p1);
- sqlite3VdbeMutexArrayEnter(p);
- }
-
- u.cd.pBt = db->aDb[pOp->p1].pBt;
- u.cd.pPager = sqlite3BtreePager(u.cd.pBt);
- u.cd.eOld = sqlite3PagerGetJournalMode(u.cd.pPager);
- if( u.cd.eNew==PAGER_JOURNALMODE_QUERY ) u.cd.eNew = u.cd.eOld;
- if( !sqlite3PagerOkToChangeJournalMode(u.cd.pPager) ) u.cd.eNew = u.cd.eOld;
+ u.ci.pBt = db->aDb[pOp->p1].pBt;
+ u.ci.pPager = sqlite3BtreePager(u.ci.pBt);
+ u.ci.eOld = sqlite3PagerGetJournalMode(u.ci.pPager);
+ if( u.ci.eNew==PAGER_JOURNALMODE_QUERY ) u.ci.eNew = u.ci.eOld;
+ if( !sqlite3PagerOkToChangeJournalMode(u.ci.pPager) ) u.ci.eNew = u.ci.eOld;
#ifndef SQLITE_OMIT_WAL
- u.cd.zFilename = sqlite3PagerFilename(u.cd.pPager);
+ u.ci.zFilename = sqlite3PagerFilename(u.ci.pPager);
/* Do not allow a transition to journal_mode=WAL for a database
** in temporary storage or if the VFS does not support shared memory
*/
- if( u.cd.eNew==PAGER_JOURNALMODE_WAL
- && (u.cd.zFilename[0]==0 /* Temp file */
- || !sqlite3PagerWalSupported(u.cd.pPager)) /* No shared-memory support */
+ if( u.ci.eNew==PAGER_JOURNALMODE_WAL
+ && (sqlite3Strlen30(u.ci.zFilename)==0 /* Temp file */
+ || !sqlite3PagerWalSupported(u.ci.pPager)) /* No shared-memory support */
){
- u.cd.eNew = u.cd.eOld;
+ u.ci.eNew = u.ci.eOld;
}
- if( (u.cd.eNew!=u.cd.eOld)
- && (u.cd.eOld==PAGER_JOURNALMODE_WAL || u.cd.eNew==PAGER_JOURNALMODE_WAL)
+ if( (u.ci.eNew!=u.ci.eOld)
+ && (u.ci.eOld==PAGER_JOURNALMODE_WAL || u.ci.eNew==PAGER_JOURNALMODE_WAL)
){
if( !db->autoCommit || db->activeVdbeCnt>1 ){
rc = SQLITE_ERROR;
sqlite3SetString(&p->zErrMsg, db,
"cannot change %s wal mode from within a transaction",
- (u.cd.eNew==PAGER_JOURNALMODE_WAL ? "into" : "out of")
+ (u.ci.eNew==PAGER_JOURNALMODE_WAL ? "into" : "out of")
);
break;
}else{
- if( u.cd.eOld==PAGER_JOURNALMODE_WAL ){
+ if( u.ci.eOld==PAGER_JOURNALMODE_WAL ){
/* If leaving WAL mode, close the log file. If successful, the call
** to PagerCloseWal() checkpoints and deletes the write-ahead-log
** file. An EXCLUSIVE lock may still be held on the database file
** after a successful return.
*/
- rc = sqlite3PagerCloseWal(u.cd.pPager);
+ rc = sqlite3PagerCloseWal(u.ci.pPager);
if( rc==SQLITE_OK ){
- sqlite3PagerSetJournalMode(u.cd.pPager, u.cd.eNew);
+ sqlite3PagerSetJournalMode(u.ci.pPager, u.ci.eNew);
}
- }else if( u.cd.eOld==PAGER_JOURNALMODE_MEMORY ){
+ }else if( u.ci.eOld==PAGER_JOURNALMODE_MEMORY ){
/* Cannot transition directly from MEMORY to WAL. Use mode OFF
** as an intermediate */
- sqlite3PagerSetJournalMode(u.cd.pPager, PAGER_JOURNALMODE_OFF);
+ sqlite3PagerSetJournalMode(u.ci.pPager, PAGER_JOURNALMODE_OFF);
}
/* Open a transaction on the database file. Regardless of the journal
** mode, this transaction always uses a rollback journal.
*/
- assert( sqlite3BtreeIsInTrans(u.cd.pBt)==0 );
+ assert( sqlite3BtreeIsInTrans(u.ci.pBt)==0 );
if( rc==SQLITE_OK ){
- rc = sqlite3BtreeSetVersion(u.cd.pBt, (u.cd.eNew==PAGER_JOURNALMODE_WAL ? 2 : 1));
+ rc = sqlite3BtreeSetVersion(u.ci.pBt, (u.ci.eNew==PAGER_JOURNALMODE_WAL ? 2 : 1));
}
}
}
#endif /* ifndef SQLITE_OMIT_WAL */
if( rc ){
- u.cd.eNew = u.cd.eOld;
+ u.ci.eNew = u.ci.eOld;
}
- u.cd.eNew = sqlite3PagerSetJournalMode(u.cd.pPager, u.cd.eNew);
+ u.ci.eNew = sqlite3PagerSetJournalMode(u.ci.pPager, u.ci.eNew);
pOut = &aMem[pOp->p2];
pOut->flags = MEM_Str|MEM_Static|MEM_Term;
- pOut->z = (char *)sqlite3JournalModename(u.cd.eNew);
+ pOut->z = (char *)sqlite3JournalModename(u.ci.eNew);
pOut->n = sqlite3Strlen30(pOut->z);
pOut->enc = SQLITE_UTF8;
sqlite3VdbeChangeEncoding(pOut, encoding);
@@ -65891,14 +70421,14 @@
** P2. Otherwise, fall through to the next instruction.
*/
case OP_IncrVacuum: { /* jump */
-#if 0 /* local variables moved into u.ce */
+#if 0 /* local variables moved into u.cj */
Btree *pBt;
-#endif /* local variables moved into u.ce */
+#endif /* local variables moved into u.cj */
assert( pOp->p1>=0 && pOp->p1<db->nDb );
- assert( (p->btreeMask & (1<<pOp->p1))!=0 );
- u.ce.pBt = db->aDb[pOp->p1].pBt;
- rc = sqlite3BtreeIncrVacuum(u.ce.pBt);
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
+ u.cj.pBt = db->aDb[pOp->p1].pBt;
+ rc = sqlite3BtreeIncrVacuum(u.cj.pBt);
if( rc==SQLITE_DONE ){
pc = pOp->p2 - 1;
rc = SQLITE_OK;
@@ -65945,7 +70475,7 @@
if( isWriteLock || 0==(db->flags&SQLITE_ReadUncommitted) ){
int p1 = pOp->p1;
assert( p1>=0 && p1<db->nDb );
- assert( (p->btreeMask & (1<<p1))!=0 );
+ assert( (p->btreeMask & (((yDbMask)1)<<p1))!=0 );
assert( isWriteLock==0 || isWriteLock==1 );
rc = sqlite3BtreeLockTable(db->aDb[p1].pBt, pOp->p2, isWriteLock);
if( (rc&0xFF)==SQLITE_LOCKED ){
@@ -65968,12 +70498,12 @@
** code will be set to SQLITE_LOCKED.
*/
case OP_VBegin: {
-#if 0 /* local variables moved into u.cf */
+#if 0 /* local variables moved into u.ck */
VTable *pVTab;
-#endif /* local variables moved into u.cf */
- u.cf.pVTab = pOp->p4.pVtab;
- rc = sqlite3VtabBegin(db, u.cf.pVTab);
- if( u.cf.pVTab ) importVtabErrMsg(p, u.cf.pVTab->pVtab);
+#endif /* local variables moved into u.ck */
+ u.ck.pVTab = pOp->p4.pVtab;
+ rc = sqlite3VtabBegin(db, u.ck.pVTab);
+ if( u.ck.pVTab ) importVtabErrMsg(p, u.ck.pVTab->pVtab);
break;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */
@@ -66012,32 +70542,32 @@
** table and stores that cursor in P1.
*/
case OP_VOpen: {
-#if 0 /* local variables moved into u.cg */
+#if 0 /* local variables moved into u.cl */
VdbeCursor *pCur;
sqlite3_vtab_cursor *pVtabCursor;
sqlite3_vtab *pVtab;
sqlite3_module *pModule;
-#endif /* local variables moved into u.cg */
+#endif /* local variables moved into u.cl */
- u.cg.pCur = 0;
- u.cg.pVtabCursor = 0;
- u.cg.pVtab = pOp->p4.pVtab->pVtab;
- u.cg.pModule = (sqlite3_module *)u.cg.pVtab->pModule;
- assert(u.cg.pVtab && u.cg.pModule);
- rc = u.cg.pModule->xOpen(u.cg.pVtab, &u.cg.pVtabCursor);
- importVtabErrMsg(p, u.cg.pVtab);
+ u.cl.pCur = 0;
+ u.cl.pVtabCursor = 0;
+ u.cl.pVtab = pOp->p4.pVtab->pVtab;
+ u.cl.pModule = (sqlite3_module *)u.cl.pVtab->pModule;
+ assert(u.cl.pVtab && u.cl.pModule);
+ rc = u.cl.pModule->xOpen(u.cl.pVtab, &u.cl.pVtabCursor);
+ importVtabErrMsg(p, u.cl.pVtab);
if( SQLITE_OK==rc ){
/* Initialize sqlite3_vtab_cursor base class */
- u.cg.pVtabCursor->pVtab = u.cg.pVtab;
+ u.cl.pVtabCursor->pVtab = u.cl.pVtab;
/* Initialise vdbe cursor object */
- u.cg.pCur = allocateCursor(p, pOp->p1, 0, -1, 0);
- if( u.cg.pCur ){
- u.cg.pCur->pVtabCursor = u.cg.pVtabCursor;
- u.cg.pCur->pModule = u.cg.pVtabCursor->pVtab->pModule;
+ u.cl.pCur = allocateCursor(p, pOp->p1, 0, -1, 0);
+ if( u.cl.pCur ){
+ u.cl.pCur->pVtabCursor = u.cl.pVtabCursor;
+ u.cl.pCur->pModule = u.cl.pVtabCursor->pVtab->pModule;
}else{
db->mallocFailed = 1;
- u.cg.pModule->xClose(u.cg.pVtabCursor);
+ u.cl.pModule->xClose(u.cl.pVtabCursor);
}
}
break;
@@ -66064,7 +70594,7 @@
** A jump is made to P2 if the result set after filtering would be empty.
*/
case OP_VFilter: { /* jump */
-#if 0 /* local variables moved into u.ch */
+#if 0 /* local variables moved into u.cm */
int nArg;
int iQuery;
const sqlite3_module *pModule;
@@ -66076,45 +70606,45 @@
int res;
int i;
Mem **apArg;
-#endif /* local variables moved into u.ch */
+#endif /* local variables moved into u.cm */
- u.ch.pQuery = &aMem[pOp->p3];
- u.ch.pArgc = &u.ch.pQuery[1];
- u.ch.pCur = p->apCsr[pOp->p1];
- assert( memIsValid(u.ch.pQuery) );
- REGISTER_TRACE(pOp->p3, u.ch.pQuery);
- assert( u.ch.pCur->pVtabCursor );
- u.ch.pVtabCursor = u.ch.pCur->pVtabCursor;
- u.ch.pVtab = u.ch.pVtabCursor->pVtab;
- u.ch.pModule = u.ch.pVtab->pModule;
+ u.cm.pQuery = &aMem[pOp->p3];
+ u.cm.pArgc = &u.cm.pQuery[1];
+ u.cm.pCur = p->apCsr[pOp->p1];
+ assert( memIsValid(u.cm.pQuery) );
+ REGISTER_TRACE(pOp->p3, u.cm.pQuery);
+ assert( u.cm.pCur->pVtabCursor );
+ u.cm.pVtabCursor = u.cm.pCur->pVtabCursor;
+ u.cm.pVtab = u.cm.pVtabCursor->pVtab;
+ u.cm.pModule = u.cm.pVtab->pModule;
/* Grab the index number and argc parameters */
- assert( (u.ch.pQuery->flags&MEM_Int)!=0 && u.ch.pArgc->flags==MEM_Int );
- u.ch.nArg = (int)u.ch.pArgc->u.i;
- u.ch.iQuery = (int)u.ch.pQuery->u.i;
+ assert( (u.cm.pQuery->flags&MEM_Int)!=0 && u.cm.pArgc->flags==MEM_Int );
+ u.cm.nArg = (int)u.cm.pArgc->u.i;
+ u.cm.iQuery = (int)u.cm.pQuery->u.i;
/* Invoke the xFilter method */
{
- u.ch.res = 0;
- u.ch.apArg = p->apArg;
- for(u.ch.i = 0; u.ch.i<u.ch.nArg; u.ch.i++){
- u.ch.apArg[u.ch.i] = &u.ch.pArgc[u.ch.i+1];
- sqlite3VdbeMemStoreType(u.ch.apArg[u.ch.i]);
+ u.cm.res = 0;
+ u.cm.apArg = p->apArg;
+ for(u.cm.i = 0; u.cm.i<u.cm.nArg; u.cm.i++){
+ u.cm.apArg[u.cm.i] = &u.cm.pArgc[u.cm.i+1];
+ sqlite3VdbeMemStoreType(u.cm.apArg[u.cm.i]);
}
p->inVtabMethod = 1;
- rc = u.ch.pModule->xFilter(u.ch.pVtabCursor, u.ch.iQuery, pOp->p4.z, u.ch.nArg, u.ch.apArg);
+ rc = u.cm.pModule->xFilter(u.cm.pVtabCursor, u.cm.iQuery, pOp->p4.z, u.cm.nArg, u.cm.apArg);
p->inVtabMethod = 0;
- importVtabErrMsg(p, u.ch.pVtab);
+ importVtabErrMsg(p, u.cm.pVtab);
if( rc==SQLITE_OK ){
- u.ch.res = u.ch.pModule->xEof(u.ch.pVtabCursor);
+ u.cm.res = u.cm.pModule->xEof(u.cm.pVtabCursor);
}
- if( u.ch.res ){
+ if( u.cm.res ){
pc = pOp->p2 - 1;
}
}
- u.ch.pCur->nullRow = 0;
+ u.cm.pCur->nullRow = 0;
break;
}
@@ -66128,51 +70658,51 @@
** P1 cursor is pointing to into register P3.
*/
case OP_VColumn: {
-#if 0 /* local variables moved into u.ci */
+#if 0 /* local variables moved into u.cn */
sqlite3_vtab *pVtab;
const sqlite3_module *pModule;
Mem *pDest;
sqlite3_context sContext;
-#endif /* local variables moved into u.ci */
+#endif /* local variables moved into u.cn */
VdbeCursor *pCur = p->apCsr[pOp->p1];
assert( pCur->pVtabCursor );
assert( pOp->p3>0 && pOp->p3<=p->nMem );
- u.ci.pDest = &aMem[pOp->p3];
- memAboutToChange(p, u.ci.pDest);
+ u.cn.pDest = &aMem[pOp->p3];
+ memAboutToChange(p, u.cn.pDest);
if( pCur->nullRow ){
- sqlite3VdbeMemSetNull(u.ci.pDest);
+ sqlite3VdbeMemSetNull(u.cn.pDest);
break;
}
- u.ci.pVtab = pCur->pVtabCursor->pVtab;
- u.ci.pModule = u.ci.pVtab->pModule;
- assert( u.ci.pModule->xColumn );
- memset(&u.ci.sContext, 0, sizeof(u.ci.sContext));
+ u.cn.pVtab = pCur->pVtabCursor->pVtab;
+ u.cn.pModule = u.cn.pVtab->pModule;
+ assert( u.cn.pModule->xColumn );
+ memset(&u.cn.sContext, 0, sizeof(u.cn.sContext));
/* The output cell may already have a buffer allocated. Move
- ** the current contents to u.ci.sContext.s so in case the user-function
+ ** the current contents to u.cn.sContext.s so in case the user-function
** can use the already allocated buffer instead of allocating a
** new one.
*/
- sqlite3VdbeMemMove(&u.ci.sContext.s, u.ci.pDest);
- MemSetTypeFlag(&u.ci.sContext.s, MEM_Null);
+ sqlite3VdbeMemMove(&u.cn.sContext.s, u.cn.pDest);
+ MemSetTypeFlag(&u.cn.sContext.s, MEM_Null);
- rc = u.ci.pModule->xColumn(pCur->pVtabCursor, &u.ci.sContext, pOp->p2);
- importVtabErrMsg(p, u.ci.pVtab);
- if( u.ci.sContext.isError ){
- rc = u.ci.sContext.isError;
+ rc = u.cn.pModule->xColumn(pCur->pVtabCursor, &u.cn.sContext, pOp->p2);
+ importVtabErrMsg(p, u.cn.pVtab);
+ if( u.cn.sContext.isError ){
+ rc = u.cn.sContext.isError;
}
/* Copy the result of the function to the P3 register. We
** do this regardless of whether or not an error occurred to ensure any
- ** dynamic allocation in u.ci.sContext.s (a Mem struct) is released.
+ ** dynamic allocation in u.cn.sContext.s (a Mem struct) is released.
*/
- sqlite3VdbeChangeEncoding(&u.ci.sContext.s, encoding);
- sqlite3VdbeMemMove(u.ci.pDest, &u.ci.sContext.s);
- REGISTER_TRACE(pOp->p3, u.ci.pDest);
- UPDATE_MAX_BLOBSIZE(u.ci.pDest);
+ sqlite3VdbeChangeEncoding(&u.cn.sContext.s, encoding);
+ sqlite3VdbeMemMove(u.cn.pDest, &u.cn.sContext.s);
+ REGISTER_TRACE(pOp->p3, u.cn.pDest);
+ UPDATE_MAX_BLOBSIZE(u.cn.pDest);
- if( sqlite3VdbeMemTooBig(u.ci.pDest) ){
+ if( sqlite3VdbeMemTooBig(u.cn.pDest) ){
goto too_big;
}
break;
@@ -66187,22 +70717,22 @@
** the end of its result set, then fall through to the next instruction.
*/
case OP_VNext: { /* jump */
-#if 0 /* local variables moved into u.cj */
+#if 0 /* local variables moved into u.co */
sqlite3_vtab *pVtab;
const sqlite3_module *pModule;
int res;
VdbeCursor *pCur;
-#endif /* local variables moved into u.cj */
+#endif /* local variables moved into u.co */
- u.cj.res = 0;
- u.cj.pCur = p->apCsr[pOp->p1];
- assert( u.cj.pCur->pVtabCursor );
- if( u.cj.pCur->nullRow ){
+ u.co.res = 0;
+ u.co.pCur = p->apCsr[pOp->p1];
+ assert( u.co.pCur->pVtabCursor );
+ if( u.co.pCur->nullRow ){
break;
}
- u.cj.pVtab = u.cj.pCur->pVtabCursor->pVtab;
- u.cj.pModule = u.cj.pVtab->pModule;
- assert( u.cj.pModule->xNext );
+ u.co.pVtab = u.co.pCur->pVtabCursor->pVtab;
+ u.co.pModule = u.co.pVtab->pModule;
+ assert( u.co.pModule->xNext );
/* Invoke the xNext() method of the module. There is no way for the
** underlying implementation to return an error if one occurs during
@@ -66211,14 +70741,14 @@
** some other method is next invoked on the save virtual table cursor.
*/
p->inVtabMethod = 1;
- rc = u.cj.pModule->xNext(u.cj.pCur->pVtabCursor);
+ rc = u.co.pModule->xNext(u.co.pCur->pVtabCursor);
p->inVtabMethod = 0;
- importVtabErrMsg(p, u.cj.pVtab);
+ importVtabErrMsg(p, u.co.pVtab);
if( rc==SQLITE_OK ){
- u.cj.res = u.cj.pModule->xEof(u.cj.pCur->pVtabCursor);
+ u.co.res = u.co.pModule->xEof(u.co.pCur->pVtabCursor);
}
- if( !u.cj.res ){
+ if( !u.co.res ){
/* If there is data, jump to P2 */
pc = pOp->p2 - 1;
}
@@ -66234,21 +70764,26 @@
** in register P1 is passed as the zName argument to the xRename method.
*/
case OP_VRename: {
-#if 0 /* local variables moved into u.ck */
+#if 0 /* local variables moved into u.cp */
sqlite3_vtab *pVtab;
Mem *pName;
-#endif /* local variables moved into u.ck */
+#endif /* local variables moved into u.cp */
- u.ck.pVtab = pOp->p4.pVtab->pVtab;
- u.ck.pName = &aMem[pOp->p1];
- assert( u.ck.pVtab->pModule->xRename );
- assert( memIsValid(u.ck.pName) );
- REGISTER_TRACE(pOp->p1, u.ck.pName);
- assert( u.ck.pName->flags & MEM_Str );
- rc = u.ck.pVtab->pModule->xRename(u.ck.pVtab, u.ck.pName->z);
- importVtabErrMsg(p, u.ck.pVtab);
- p->expired = 0;
-
+ u.cp.pVtab = pOp->p4.pVtab->pVtab;
+ u.cp.pName = &aMem[pOp->p1];
+ assert( u.cp.pVtab->pModule->xRename );
+ assert( memIsValid(u.cp.pName) );
+ REGISTER_TRACE(pOp->p1, u.cp.pName);
+ assert( u.cp.pName->flags & MEM_Str );
+ testcase( u.cp.pName->enc==SQLITE_UTF8 );
+ testcase( u.cp.pName->enc==SQLITE_UTF16BE );
+ testcase( u.cp.pName->enc==SQLITE_UTF16LE );
+ rc = sqlite3VdbeChangeEncoding(u.cp.pName, SQLITE_UTF8);
+ if( rc==SQLITE_OK ){
+ rc = u.cp.pVtab->pModule->xRename(u.cp.pVtab, u.cp.pName->z);
+ importVtabErrMsg(p, u.cp.pVtab);
+ p->expired = 0;
+ }
break;
}
#endif
@@ -66278,7 +70813,7 @@
** is set to the value of the rowid for the row just inserted.
*/
case OP_VUpdate: {
-#if 0 /* local variables moved into u.cl */
+#if 0 /* local variables moved into u.cq */
sqlite3_vtab *pVtab;
sqlite3_module *pModule;
int nArg;
@@ -66286,29 +70821,43 @@
sqlite_int64 rowid;
Mem **apArg;
Mem *pX;
-#endif /* local variables moved into u.cl */
+#endif /* local variables moved into u.cq */
- u.cl.pVtab = pOp->p4.pVtab->pVtab;
- u.cl.pModule = (sqlite3_module *)u.cl.pVtab->pModule;
- u.cl.nArg = pOp->p2;
+ assert( pOp->p2==1 || pOp->p5==OE_Fail || pOp->p5==OE_Rollback
+ || pOp->p5==OE_Abort || pOp->p5==OE_Ignore || pOp->p5==OE_Replace
+ );
+ u.cq.pVtab = pOp->p4.pVtab->pVtab;
+ u.cq.pModule = (sqlite3_module *)u.cq.pVtab->pModule;
+ u.cq.nArg = pOp->p2;
assert( pOp->p4type==P4_VTAB );
- if( ALWAYS(u.cl.pModule->xUpdate) ){
- u.cl.apArg = p->apArg;
- u.cl.pX = &aMem[pOp->p3];
- for(u.cl.i=0; u.cl.i<u.cl.nArg; u.cl.i++){
- assert( memIsValid(u.cl.pX) );
- memAboutToChange(p, u.cl.pX);
- sqlite3VdbeMemStoreType(u.cl.pX);
- u.cl.apArg[u.cl.i] = u.cl.pX;
- u.cl.pX++;
+ if( ALWAYS(u.cq.pModule->xUpdate) ){
+ u8 vtabOnConflict = db->vtabOnConflict;
+ u.cq.apArg = p->apArg;
+ u.cq.pX = &aMem[pOp->p3];
+ for(u.cq.i=0; u.cq.i<u.cq.nArg; u.cq.i++){
+ assert( memIsValid(u.cq.pX) );
+ memAboutToChange(p, u.cq.pX);
+ sqlite3VdbeMemStoreType(u.cq.pX);
+ u.cq.apArg[u.cq.i] = u.cq.pX;
+ u.cq.pX++;
}
- rc = u.cl.pModule->xUpdate(u.cl.pVtab, u.cl.nArg, u.cl.apArg, &u.cl.rowid);
- importVtabErrMsg(p, u.cl.pVtab);
+ db->vtabOnConflict = pOp->p5;
+ rc = u.cq.pModule->xUpdate(u.cq.pVtab, u.cq.nArg, u.cq.apArg, &u.cq.rowid);
+ db->vtabOnConflict = vtabOnConflict;
+ importVtabErrMsg(p, u.cq.pVtab);
if( rc==SQLITE_OK && pOp->p1 ){
- assert( u.cl.nArg>1 && u.cl.apArg[0] && (u.cl.apArg[0]->flags&MEM_Null) );
- db->lastRowid = u.cl.rowid;
+ assert( u.cq.nArg>1 && u.cq.apArg[0] && (u.cq.apArg[0]->flags&MEM_Null) );
+ db->lastRowid = lastRowid = u.cq.rowid;
}
- p->nChange++;
+ if( rc==SQLITE_CONSTRAINT && pOp->p4.pVtab->bConstraint ){
+ if( pOp->p5==OE_Ignore ){
+ rc = SQLITE_OK;
+ }else{
+ p->errorAction = ((pOp->p5==OE_Replace) ? OE_Abort : pOp->p5);
+ }
+ }else{
+ p->nChange++;
+ }
}
break;
}
@@ -66358,23 +70907,23 @@
** the UTF-8 string contained in P4 is emitted on the trace callback.
*/
case OP_Trace: {
-#if 0 /* local variables moved into u.cm */
+#if 0 /* local variables moved into u.cr */
char *zTrace;
-#endif /* local variables moved into u.cm */
+ char *z;
+#endif /* local variables moved into u.cr */
- u.cm.zTrace = (pOp->p4.z ? pOp->p4.z : p->zSql);
- if( u.cm.zTrace ){
- if( db->xTrace ){
- char *z = sqlite3VdbeExpandSql(p, u.cm.zTrace);
- db->xTrace(db->pTraceArg, z);
- sqlite3DbFree(db, z);
- }
-#ifdef SQLITE_DEBUG
- if( (db->flags & SQLITE_SqlTrace)!=0 ){
- sqlite3DebugPrintf("SQL-trace: %s\n", u.cm.zTrace);
- }
-#endif /* SQLITE_DEBUG */
+ if( db->xTrace && (u.cr.zTrace = (pOp->p4.z ? pOp->p4.z : p->zSql))!=0 ){
+ u.cr.z = sqlite3VdbeExpandSql(p, u.cr.zTrace);
+ db->xTrace(db->pTraceArg, u.cr.z);
+ sqlite3DbFree(db, u.cr.z);
}
+#ifdef SQLITE_DEBUG
+ if( (db->flags & SQLITE_SqlTrace)!=0
+ && (u.cr.zTrace = (pOp->p4.z ? pOp->p4.z : p->zSql))!=0
+ ){
+ sqlite3DebugPrintf("SQL-trace: %s\n", u.cr.zTrace);
+ }
+#endif /* SQLITE_DEBUG */
break;
}
#endif
@@ -66450,13 +70999,16 @@
sqlite3VdbeHalt(p);
if( rc==SQLITE_IOERR_NOMEM ) db->mallocFailed = 1;
rc = SQLITE_ERROR;
- if( resetSchemaOnFault ) sqlite3ResetInternalSchema(db, 0);
+ if( resetSchemaOnFault>0 ){
+ sqlite3ResetInternalSchema(db, resetSchemaOnFault-1);
+ }
/* This is the only way out of this procedure. We have to
** release the mutexes on btrees that were acquired at the
** top. */
vdbe_return:
- sqlite3BtreeMutexArrayLeave(&p->aMutex);
+ db->lastRowid = lastRowid;
+ sqlite3VdbeLeave(p);
return rc;
/* Jump to here if a string or blob larger than SQLITE_MAX_LENGTH
@@ -66765,13 +71317,14 @@
/* Configure the OP_VerifyCookie */
sqlite3VdbeChangeP1(v, 1, iDb);
sqlite3VdbeChangeP2(v, 1, pTab->pSchema->schema_cookie);
+ sqlite3VdbeChangeP3(v, 1, pTab->pSchema->iGeneration);
/* Make sure a mutex is held on the table to be accessed */
sqlite3VdbeUsesBtree(v, iDb);
/* Configure the OP_TableLock instruction */
#ifdef SQLITE_OMIT_SHARED_CACHE
- sqlite3VdbeChangeToNoop(v, 2, 1);
+ sqlite3VdbeChangeToNoop(v, 2);
#else
sqlite3VdbeChangeP1(v, 2, iDb);
sqlite3VdbeChangeP2(v, 2, pTab->tnum);
@@ -66781,7 +71334,7 @@
/* Remove either the OP_OpenWrite or OpenRead. Set the P2
** parameter of the other to pTab->tnum. */
- sqlite3VdbeChangeToNoop(v, 4 - flags, 1);
+ sqlite3VdbeChangeToNoop(v, 4 - flags);
sqlite3VdbeChangeP2(v, 3 + flags, pTab->tnum);
sqlite3VdbeChangeP3(v, 3 + flags, iDb);
@@ -66795,7 +71348,10 @@
sqlite3VdbeChangeP4(v, 3+flags, SQLITE_INT_TO_PTR(pTab->nCol+1),P4_INT32);
sqlite3VdbeChangeP2(v, 7, pTab->nCol);
if( !db->mallocFailed ){
- sqlite3VdbeMakeReady(v, 1, 1, 1, 0, 0, 0);
+ pParse->nVar = 1;
+ pParse->nMem = 1;
+ pParse->nTab = 1;
+ sqlite3VdbeMakeReady(v, pParse);
}
}
@@ -66964,6 +71520,889 @@
#endif /* #ifndef SQLITE_OMIT_INCRBLOB */
/************** End of vdbeblob.c ********************************************/
+/************** Begin file vdbesort.c ****************************************/
+/*
+** 2011 July 9
+**
+** The author disclaims copyright to this source code. In place of
+** a legal notice, here is a blessing:
+**
+** May you do good and not evil.
+** May you find forgiveness for yourself and forgive others.
+** May you share freely, never taking more than you give.
+**
+*************************************************************************
+** This file contains code for the VdbeSorter object, used in concert with
+** a VdbeCursor to sort large numbers of keys (as may be required, for
+** example, by CREATE INDEX statements on tables too large to fit in main
+** memory).
+*/
+
+
+#ifndef SQLITE_OMIT_MERGE_SORT
+
+typedef struct VdbeSorterIter VdbeSorterIter;
+typedef struct SorterRecord SorterRecord;
+
+/*
+** NOTES ON DATA STRUCTURE USED FOR N-WAY MERGES:
+**
+** As keys are added to the sorter, they are written to disk in a series
+** of sorted packed-memory-arrays (PMAs). The size of each PMA is roughly
+** the same as the cache-size allowed for temporary databases. In order
+** to allow the caller to extract keys from the sorter in sorted order,
+** all PMAs currently stored on disk must be merged together. This comment
+** describes the data structure used to do so. The structure supports
+** merging any number of arrays in a single pass with no redundant comparison
+** operations.
+**
+** The aIter[] array contains an iterator for each of the PMAs being merged.
+** An aIter[] iterator either points to a valid key or else is at EOF. For
+** the purposes of the paragraphs below, we assume that the array is actually
+** N elements in size, where N is the smallest power of 2 greater to or equal
+** to the number of iterators being merged. The extra aIter[] elements are
+** treated as if they are empty (always at EOF).
+**
+** The aTree[] array is also N elements in size. The value of N is stored in
+** the VdbeSorter.nTree variable.
+**
+** The final (N/2) elements of aTree[] contain the results of comparing
+** pairs of iterator keys together. Element i contains the result of
+** comparing aIter[2*i-N] and aIter[2*i-N+1]. Whichever key is smaller, the
+** aTree element is set to the index of it.
+**
+** For the purposes of this comparison, EOF is considered greater than any
+** other key value. If the keys are equal (only possible with two EOF
+** values), it doesn't matter which index is stored.
+**
+** The (N/4) elements of aTree[] that preceed the final (N/2) described
+** above contains the index of the smallest of each block of 4 iterators.
+** And so on. So that aTree[1] contains the index of the iterator that
+** currently points to the smallest key value. aTree[0] is unused.
+**
+** Example:
+**
+** aIter[0] -> Banana
+** aIter[1] -> Feijoa
+** aIter[2] -> Elderberry
+** aIter[3] -> Currant
+** aIter[4] -> Grapefruit
+** aIter[5] -> Apple
+** aIter[6] -> Durian
+** aIter[7] -> EOF
+**
+** aTree[] = { X, 5 0, 5 0, 3, 5, 6 }
+**
+** The current element is "Apple" (the value of the key indicated by
+** iterator 5). When the Next() operation is invoked, iterator 5 will
+** be advanced to the next key in its segment. Say the next key is
+** "Eggplant":
+**
+** aIter[5] -> Eggplant
+**
+** The contents of aTree[] are updated first by comparing the new iterator
+** 5 key to the current key of iterator 4 (still "Grapefruit"). The iterator
+** 5 value is still smaller, so aTree[6] is set to 5. And so on up the tree.
+** The value of iterator 6 - "Durian" - is now smaller than that of iterator
+** 5, so aTree[3] is set to 6. Key 0 is smaller than key 6 (Banana<Durian),
+** so the value written into element 1 of the array is 0. As follows:
+**
+** aTree[] = { X, 0 0, 6 0, 3, 5, 6 }
+**
+** In other words, each time we advance to the next sorter element, log2(N)
+** key comparison operations are required, where N is the number of segments
+** being merged (rounded up to the next power of 2).
+*/
+struct VdbeSorter {
+ int nInMemory; /* Current size of pRecord list as PMA */
+ int nTree; /* Used size of aTree/aIter (power of 2) */
+ VdbeSorterIter *aIter; /* Array of iterators to merge */
+ int *aTree; /* Current state of incremental merge */
+ i64 iWriteOff; /* Current write offset within file pTemp1 */
+ i64 iReadOff; /* Current read offset within file pTemp1 */
+ sqlite3_file *pTemp1; /* PMA file 1 */
+ int nPMA; /* Number of PMAs stored in pTemp1 */
+ SorterRecord *pRecord; /* Head of in-memory record list */
+ int mnPmaSize; /* Minimum PMA size, in bytes */
+ int mxPmaSize; /* Maximum PMA size, in bytes. 0==no limit */
+ UnpackedRecord *pUnpacked; /* Used to unpack keys */
+};
+
+/*
+** The following type is an iterator for a PMA. It caches the current key in
+** variables nKey/aKey. If the iterator is at EOF, pFile==0.
+*/
+struct VdbeSorterIter {
+ i64 iReadOff; /* Current read offset */
+ i64 iEof; /* 1 byte past EOF for this iterator */
+ sqlite3_file *pFile; /* File iterator is reading from */
+ int nAlloc; /* Bytes of space at aAlloc */
+ u8 *aAlloc; /* Allocated space */
+ int nKey; /* Number of bytes in key */
+ u8 *aKey; /* Pointer to current key */
+};
+
+/*
+** A structure to store a single record. All in-memory records are connected
+** together into a linked list headed at VdbeSorter.pRecord using the
+** SorterRecord.pNext pointer.
+*/
+struct SorterRecord {
+ void *pVal;
+ int nVal;
+ SorterRecord *pNext;
+};
+
+/* Minimum allowable value for the VdbeSorter.nWorking variable */
+#define SORTER_MIN_WORKING 10
+
+/* Maximum number of segments to merge in a single pass. */
+#define SORTER_MAX_MERGE_COUNT 16
+
+/*
+** Free all memory belonging to the VdbeSorterIter object passed as the second
+** argument. All structure fields are set to zero before returning.
+*/
+static void vdbeSorterIterZero(sqlite3 *db, VdbeSorterIter *pIter){
+ sqlite3DbFree(db, pIter->aAlloc);
+ memset(pIter, 0, sizeof(VdbeSorterIter));
+}
+
+/*
+** Advance iterator pIter to the next key in its PMA. Return SQLITE_OK if
+** no error occurs, or an SQLite error code if one does.
+*/
+static int vdbeSorterIterNext(
+ sqlite3 *db, /* Database handle (for sqlite3DbMalloc() ) */
+ VdbeSorterIter *pIter /* Iterator to advance */
+){
+ int rc; /* Return Code */
+ int nRead; /* Number of bytes read */
+ int nRec = 0; /* Size of record in bytes */
+ int iOff = 0; /* Size of serialized size varint in bytes */
+
+ assert( pIter->iEof>=pIter->iReadOff );
+ if( pIter->iEof-pIter->iReadOff>5 ){
+ nRead = 5;
+ }else{
+ nRead = (int)(pIter->iEof - pIter->iReadOff);
+ }
+ if( nRead<=0 ){
+ /* This is an EOF condition */
+ vdbeSorterIterZero(db, pIter);
+ return SQLITE_OK;
+ }
+
+ rc = sqlite3OsRead(pIter->pFile, pIter->aAlloc, nRead, pIter->iReadOff);
+ if( rc==SQLITE_OK ){
+ iOff = getVarint32(pIter->aAlloc, nRec);
+ if( (iOff+nRec)>nRead ){
+ int nRead2; /* Number of extra bytes to read */
+ if( (iOff+nRec)>pIter->nAlloc ){
+ int nNew = pIter->nAlloc*2;
+ while( (iOff+nRec)>nNew ) nNew = nNew*2;
+ pIter->aAlloc = sqlite3DbReallocOrFree(db, pIter->aAlloc, nNew);
+ if( !pIter->aAlloc ) return SQLITE_NOMEM;
+ pIter->nAlloc = nNew;
+ }
+
+ nRead2 = iOff + nRec - nRead;
+ rc = sqlite3OsRead(
+ pIter->pFile, &pIter->aAlloc[nRead], nRead2, pIter->iReadOff+nRead
+ );
+ }
+ }
+
+ assert( rc!=SQLITE_OK || nRec>0 );
+ pIter->iReadOff += iOff+nRec;
+ pIter->nKey = nRec;
+ pIter->aKey = &pIter->aAlloc[iOff];
+ return rc;
+}
+
+/*
+** Write a single varint, value iVal, to file-descriptor pFile. Return
+** SQLITE_OK if successful, or an SQLite error code if some error occurs.
+**
+** The value of *piOffset when this function is called is used as the byte
+** offset in file pFile to write to. Before returning, *piOffset is
+** incremented by the number of bytes written.
+*/
+static int vdbeSorterWriteVarint(
+ sqlite3_file *pFile, /* File to write to */
+ i64 iVal, /* Value to write as a varint */
+ i64 *piOffset /* IN/OUT: Write offset in file pFile */
+){
+ u8 aVarint[9]; /* Buffer large enough for a varint */
+ int nVarint; /* Number of used bytes in varint */
+ int rc; /* Result of write() call */
+
+ nVarint = sqlite3PutVarint(aVarint, iVal);
+ rc = sqlite3OsWrite(pFile, aVarint, nVarint, *piOffset);
+ *piOffset += nVarint;
+
+ return rc;
+}
+
+/*
+** Read a single varint from file-descriptor pFile. Return SQLITE_OK if
+** successful, or an SQLite error code if some error occurs.
+**
+** The value of *piOffset when this function is called is used as the
+** byte offset in file pFile from whence to read the varint. If successful
+** (i.e. if no IO error occurs), then *piOffset is set to the offset of
+** the first byte past the end of the varint before returning. *piVal is
+** set to the integer value read. If an error occurs, the final values of
+** both *piOffset and *piVal are undefined.
+*/
+static int vdbeSorterReadVarint(
+ sqlite3_file *pFile, /* File to read from */
+ i64 *piOffset, /* IN/OUT: Read offset in pFile */
+ i64 *piVal /* OUT: Value read from file */
+){
+ u8 aVarint[9]; /* Buffer large enough for a varint */
+ i64 iOff = *piOffset; /* Offset in file to read from */
+ int rc; /* Return code */
+
+ rc = sqlite3OsRead(pFile, aVarint, 9, iOff);
+ if( rc==SQLITE_OK ){
+ *piOffset += getVarint(aVarint, (u64 *)piVal);
+ }
+
+ return rc;
+}
+
+/*
+** Initialize iterator pIter to scan through the PMA stored in file pFile
+** starting at offset iStart and ending at offset iEof-1. This function
+** leaves the iterator pointing to the first key in the PMA (or EOF if the
+** PMA is empty).
+*/
+static int vdbeSorterIterInit(
+ sqlite3 *db, /* Database handle */
+ VdbeSorter *pSorter, /* Sorter object */
+ i64 iStart, /* Start offset in pFile */
+ VdbeSorterIter *pIter, /* Iterator to populate */
+ i64 *pnByte /* IN/OUT: Increment this value by PMA size */
+){
+ int rc;
+
+ assert( pSorter->iWriteOff>iStart );
+ assert( pIter->aAlloc==0 );
+ pIter->pFile = pSorter->pTemp1;
+ pIter->iReadOff = iStart;
+ pIter->nAlloc = 128;
+ pIter->aAlloc = (u8 *)sqlite3DbMallocRaw(db, pIter->nAlloc);
+ if( !pIter->aAlloc ){
+ rc = SQLITE_NOMEM;
+ }else{
+ i64 nByte; /* Total size of PMA in bytes */
+ rc = vdbeSorterReadVarint(pSorter->pTemp1, &pIter->iReadOff, &nByte);
+ *pnByte += nByte;
+ pIter->iEof = pIter->iReadOff + nByte;
+ }
+ if( rc==SQLITE_OK ){
+ rc = vdbeSorterIterNext(db, pIter);
+ }
+ return rc;
+}
+
+
+/*
+** Compare key1 (buffer pKey1, size nKey1 bytes) with key2 (buffer pKey2,
+** size nKey2 bytes). Argument pKeyInfo supplies the collation functions
+** used by the comparison. If an error occurs, return an SQLite error code.
+** Otherwise, return SQLITE_OK and set *pRes to a negative, zero or positive
+** value, depending on whether key1 is smaller, equal to or larger than key2.
+**
+** If the bOmitRowid argument is non-zero, assume both keys end in a rowid
+** field. For the purposes of the comparison, ignore it. Also, if bOmitRowid
+** is true and key1 contains even a single NULL value, it is considered to
+** be less than key2. Even if key2 also contains NULL values.
+**
+** If pKey2 is passed a NULL pointer, then it is assumed that the pCsr->aSpace
+** has been allocated and contains an unpacked record that is used as key2.
+*/
+static void vdbeSorterCompare(
+ VdbeCursor *pCsr, /* Cursor object (for pKeyInfo) */
+ int bOmitRowid, /* Ignore rowid field at end of keys */
+ void *pKey1, int nKey1, /* Left side of comparison */
+ void *pKey2, int nKey2, /* Right side of comparison */
+ int *pRes /* OUT: Result of comparison */
+){
+ KeyInfo *pKeyInfo = pCsr->pKeyInfo;
+ VdbeSorter *pSorter = pCsr->pSorter;
+ UnpackedRecord *r2 = pSorter->pUnpacked;
+ int i;
+
+ if( pKey2 ){
+ sqlite3VdbeRecordUnpack(pKeyInfo, nKey2, pKey2, r2);
+ }
+
+ if( bOmitRowid ){
+ r2->nField = pKeyInfo->nField;
+ assert( r2->nField>0 );
+ for(i=0; i<r2->nField; i++){
+ if( r2->aMem[i].flags & MEM_Null ){
+ *pRes = -1;
+ return;
+ }
+ }
+ r2->flags |= UNPACKED_PREFIX_MATCH;
+ }
+
+ *pRes = sqlite3VdbeRecordCompare(nKey1, pKey1, r2);
+}
+
+/*
+** This function is called to compare two iterator keys when merging
+** multiple b-tree segments. Parameter iOut is the index of the aTree[]
+** value to recalculate.
+*/
+static int vdbeSorterDoCompare(VdbeCursor *pCsr, int iOut){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ int i1;
+ int i2;
+ int iRes;
+ VdbeSorterIter *p1;
+ VdbeSorterIter *p2;
+
+ assert( iOut<pSorter->nTree && iOut>0 );
+
+ if( iOut>=(pSorter->nTree/2) ){
+ i1 = (iOut - pSorter->nTree/2) * 2;
+ i2 = i1 + 1;
+ }else{
+ i1 = pSorter->aTree[iOut*2];
+ i2 = pSorter->aTree[iOut*2+1];
+ }
+
+ p1 = &pSorter->aIter[i1];
+ p2 = &pSorter->aIter[i2];
+
+ if( p1->pFile==0 ){
+ iRes = i2;
+ }else if( p2->pFile==0 ){
+ iRes = i1;
+ }else{
+ int res;
+ assert( pCsr->pSorter->pUnpacked!=0 ); /* allocated in vdbeSorterMerge() */
+ vdbeSorterCompare(
+ pCsr, 0, p1->aKey, p1->nKey, p2->aKey, p2->nKey, &res
+ );
+ if( res<=0 ){
+ iRes = i1;
+ }else{
+ iRes = i2;
+ }
+ }
+
+ pSorter->aTree[iOut] = iRes;
+ return SQLITE_OK;
+}
+
+/*
+** Initialize the temporary index cursor just opened as a sorter cursor.
+*/
+SQLITE_PRIVATE int sqlite3VdbeSorterInit(sqlite3 *db, VdbeCursor *pCsr){
+ int pgsz; /* Page size of main database */
+ int mxCache; /* Cache size */
+ VdbeSorter *pSorter; /* The new sorter */
+ char *d; /* Dummy */
+
+ assert( pCsr->pKeyInfo && pCsr->pBt==0 );
+ pCsr->pSorter = pSorter = sqlite3DbMallocZero(db, sizeof(VdbeSorter));
+ if( pSorter==0 ){
+ return SQLITE_NOMEM;
+ }
+
+ pSorter->pUnpacked = sqlite3VdbeAllocUnpackedRecord(pCsr->pKeyInfo, 0, 0, &d);
+ if( pSorter->pUnpacked==0 ) return SQLITE_NOMEM;
+ assert( pSorter->pUnpacked==(UnpackedRecord *)d );
+
+ if( !sqlite3TempInMemory(db) ){
+ pgsz = sqlite3BtreeGetPageSize(db->aDb[0].pBt);
+ pSorter->mnPmaSize = SORTER_MIN_WORKING * pgsz;
+ mxCache = db->aDb[0].pSchema->cache_size;
+ if( mxCache<SORTER_MIN_WORKING ) mxCache = SORTER_MIN_WORKING;
+ pSorter->mxPmaSize = mxCache * pgsz;
+ }
+
+ return SQLITE_OK;
+}
+
+/*
+** Free the list of sorted records starting at pRecord.
+*/
+static void vdbeSorterRecordFree(sqlite3 *db, SorterRecord *pRecord){
+ SorterRecord *p;
+ SorterRecord *pNext;
+ for(p=pRecord; p; p=pNext){
+ pNext = p->pNext;
+ sqlite3DbFree(db, p);
+ }
+}
+
+/*
+** Free any cursor components allocated by sqlite3VdbeSorterXXX routines.
+*/
+SQLITE_PRIVATE void sqlite3VdbeSorterClose(sqlite3 *db, VdbeCursor *pCsr){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ if( pSorter ){
+ if( pSorter->aIter ){
+ int i;
+ for(i=0; i<pSorter->nTree; i++){
+ vdbeSorterIterZero(db, &pSorter->aIter[i]);
+ }
+ sqlite3DbFree(db, pSorter->aIter);
+ }
+ if( pSorter->pTemp1 ){
+ sqlite3OsCloseFree(pSorter->pTemp1);
+ }
+ vdbeSorterRecordFree(db, pSorter->pRecord);
+ sqlite3DbFree(db, pSorter->pUnpacked);
+ sqlite3DbFree(db, pSorter);
+ pCsr->pSorter = 0;
+ }
+}
+
+/*
+** Allocate space for a file-handle and open a temporary file. If successful,
+** set *ppFile to point to the malloc'd file-handle and return SQLITE_OK.
+** Otherwise, set *ppFile to 0 and return an SQLite error code.
+*/
+static int vdbeSorterOpenTempFile(sqlite3 *db, sqlite3_file **ppFile){
+ int dummy;
+ return sqlite3OsOpenMalloc(db->pVfs, 0, ppFile,
+ SQLITE_OPEN_TEMP_JOURNAL |
+ SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE |
+ SQLITE_OPEN_EXCLUSIVE | SQLITE_OPEN_DELETEONCLOSE, &dummy
+ );
+}
+
+/*
+** Merge the two sorted lists p1 and p2 into a single list.
+** Set *ppOut to the head of the new list.
+*/
+static void vdbeSorterMerge(
+ VdbeCursor *pCsr, /* For pKeyInfo */
+ SorterRecord *p1, /* First list to merge */
+ SorterRecord *p2, /* Second list to merge */
+ SorterRecord **ppOut /* OUT: Head of merged list */
+){
+ SorterRecord *pFinal = 0;
+ SorterRecord **pp = &pFinal;
+ void *pVal2 = p2 ? p2->pVal : 0;
+
+ while( p1 && p2 ){
+ int res;
+ vdbeSorterCompare(pCsr, 0, p1->pVal, p1->nVal, pVal2, p2->nVal, &res);
+ if( res<=0 ){
+ *pp = p1;
+ pp = &p1->pNext;
+ p1 = p1->pNext;
+ pVal2 = 0;
+ }else{
+ *pp = p2;
+ pp = &p2->pNext;
+ p2 = p2->pNext;
+ if( p2==0 ) break;
+ pVal2 = p2->pVal;
+ }
+ }
+ *pp = p1 ? p1 : p2;
+ *ppOut = pFinal;
+}
+
+/*
+** Sort the linked list of records headed at pCsr->pRecord. Return SQLITE_OK
+** if successful, or an SQLite error code (i.e. SQLITE_NOMEM) if an error
+** occurs.
+*/
+static int vdbeSorterSort(VdbeCursor *pCsr){
+ int i;
+ SorterRecord **aSlot;
+ SorterRecord *p;
+ VdbeSorter *pSorter = pCsr->pSorter;
+
+ aSlot = (SorterRecord **)sqlite3MallocZero(64 * sizeof(SorterRecord *));
+ if( !aSlot ){
+ return SQLITE_NOMEM;
+ }
+
+ p = pSorter->pRecord;
+ while( p ){
+ SorterRecord *pNext = p->pNext;
+ p->pNext = 0;
+ for(i=0; aSlot[i]; i++){
+ vdbeSorterMerge(pCsr, p, aSlot[i], &p);
+ aSlot[i] = 0;
+ }
+ aSlot[i] = p;
+ p = pNext;
+ }
+
+ p = 0;
+ for(i=0; i<64; i++){
+ vdbeSorterMerge(pCsr, p, aSlot[i], &p);
+ }
+ pSorter->pRecord = p;
+
+ sqlite3_free(aSlot);
+ return SQLITE_OK;
+}
+
+
+/*
+** Write the current contents of the in-memory linked-list to a PMA. Return
+** SQLITE_OK if successful, or an SQLite error code otherwise.
+**
+** The format of a PMA is:
+**
+** * A varint. This varint contains the total number of bytes of content
+** in the PMA (not including the varint itself).
+**
+** * One or more records packed end-to-end in order of ascending keys.
+** Each record consists of a varint followed by a blob of data (the
+** key). The varint is the number of bytes in the blob of data.
+*/
+static int vdbeSorterListToPMA(sqlite3 *db, VdbeCursor *pCsr){
+ int rc = SQLITE_OK; /* Return code */
+ VdbeSorter *pSorter = pCsr->pSorter;
+
+ if( pSorter->nInMemory==0 ){
+ assert( pSorter->pRecord==0 );
+ return rc;
+ }
+
+ rc = vdbeSorterSort(pCsr);
+
+ /* If the first temporary PMA file has not been opened, open it now. */
+ if( rc==SQLITE_OK && pSorter->pTemp1==0 ){
+ rc = vdbeSorterOpenTempFile(db, &pSorter->pTemp1);
+ assert( rc!=SQLITE_OK || pSorter->pTemp1 );
+ assert( pSorter->iWriteOff==0 );
+ assert( pSorter->nPMA==0 );
+ }
+
+ if( rc==SQLITE_OK ){
+ i64 iOff = pSorter->iWriteOff;
+ SorterRecord *p;
+ SorterRecord *pNext = 0;
+ static const char eightZeros[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+
+ pSorter->nPMA++;
+ rc = vdbeSorterWriteVarint(pSorter->pTemp1, pSorter->nInMemory, &iOff);
+ for(p=pSorter->pRecord; rc==SQLITE_OK && p; p=pNext){
+ pNext = p->pNext;
+ rc = vdbeSorterWriteVarint(pSorter->pTemp1, p->nVal, &iOff);
+
+ if( rc==SQLITE_OK ){
+ rc = sqlite3OsWrite(pSorter->pTemp1, p->pVal, p->nVal, iOff);
+ iOff += p->nVal;
+ }
+
+ sqlite3DbFree(db, p);
+ }
+
+ /* This assert verifies that unless an error has occurred, the size of
+ ** the PMA on disk is the same as the expected size stored in
+ ** pSorter->nInMemory. */
+ assert( rc!=SQLITE_OK || pSorter->nInMemory==(
+ iOff-pSorter->iWriteOff-sqlite3VarintLen(pSorter->nInMemory)
+ ));
+
+ pSorter->iWriteOff = iOff;
+ if( rc==SQLITE_OK ){
+ /* Terminate each file with 8 extra bytes so that from any offset
+ ** in the file we can always read 9 bytes without a SHORT_READ error */
+ rc = sqlite3OsWrite(pSorter->pTemp1, eightZeros, 8, iOff);
+ }
+ pSorter->pRecord = p;
+ }
+
+ return rc;
+}
+
+/*
+** Add a record to the sorter.
+*/
+SQLITE_PRIVATE int sqlite3VdbeSorterWrite(
+ sqlite3 *db, /* Database handle */
+ VdbeCursor *pCsr, /* Sorter cursor */
+ Mem *pVal /* Memory cell containing record */
+){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ int rc = SQLITE_OK; /* Return Code */
+ SorterRecord *pNew; /* New list element */
+
+ assert( pSorter );
+ pSorter->nInMemory += sqlite3VarintLen(pVal->n) + pVal->n;
+
+ pNew = (SorterRecord *)sqlite3DbMallocRaw(db, pVal->n + sizeof(SorterRecord));
+ if( pNew==0 ){
+ rc = SQLITE_NOMEM;
+ }else{
+ pNew->pVal = (void *)&pNew[1];
+ memcpy(pNew->pVal, pVal->z, pVal->n);
+ pNew->nVal = pVal->n;
+ pNew->pNext = pSorter->pRecord;
+ pSorter->pRecord = pNew;
+ }
+
+ /* See if the contents of the sorter should now be written out. They
+ ** are written out when either of the following are true:
+ **
+ ** * The total memory allocated for the in-memory list is greater
+ ** than (page-size * cache-size), or
+ **
+ ** * The total memory allocated for the in-memory list is greater
+ ** than (page-size * 10) and sqlite3HeapNearlyFull() returns true.
+ */
+ if( rc==SQLITE_OK && pSorter->mxPmaSize>0 && (
+ (pSorter->nInMemory>pSorter->mxPmaSize)
+ || (pSorter->nInMemory>pSorter->mnPmaSize && sqlite3HeapNearlyFull())
+ )){
+ rc = vdbeSorterListToPMA(db, pCsr);
+ pSorter->nInMemory = 0;
+ }
+
+ return rc;
+}
+
+/*
+** Helper function for sqlite3VdbeSorterRewind().
+*/
+static int vdbeSorterInitMerge(
+ sqlite3 *db, /* Database handle */
+ VdbeCursor *pCsr, /* Cursor handle for this sorter */
+ i64 *pnByte /* Sum of bytes in all opened PMAs */
+){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ int rc = SQLITE_OK; /* Return code */
+ int i; /* Used to iterator through aIter[] */
+ i64 nByte = 0; /* Total bytes in all opened PMAs */
+
+ /* Initialize the iterators. */
+ for(i=0; i<SORTER_MAX_MERGE_COUNT; i++){
+ VdbeSorterIter *pIter = &pSorter->aIter[i];
+ rc = vdbeSorterIterInit(db, pSorter, pSorter->iReadOff, pIter, &nByte);
+ pSorter->iReadOff = pIter->iEof;
+ assert( rc!=SQLITE_OK || pSorter->iReadOff<=pSorter->iWriteOff );
+ if( rc!=SQLITE_OK || pSorter->iReadOff>=pSorter->iWriteOff ) break;
+ }
+
+ /* Initialize the aTree[] array. */
+ for(i=pSorter->nTree-1; rc==SQLITE_OK && i>0; i--){
+ rc = vdbeSorterDoCompare(pCsr, i);
+ }
+
+ *pnByte = nByte;
+ return rc;
+}
+
+/*
+** Once the sorter has been populated, this function is called to prepare
+** for iterating through its contents in sorted order.
+*/
+SQLITE_PRIVATE int sqlite3VdbeSorterRewind(sqlite3 *db, VdbeCursor *pCsr, int *pbEof){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ int rc; /* Return code */
+ sqlite3_file *pTemp2 = 0; /* Second temp file to use */
+ i64 iWrite2 = 0; /* Write offset for pTemp2 */
+ int nIter; /* Number of iterators used */
+ int nByte; /* Bytes of space required for aIter/aTree */
+ int N = 2; /* Power of 2 >= nIter */
+
+ assert( pSorter );
+
+ /* If no data has been written to disk, then do not do so now. Instead,
+ ** sort the VdbeSorter.pRecord list. The vdbe layer will read data directly
+ ** from the in-memory list. */
+ if( pSorter->nPMA==0 ){
+ *pbEof = !pSorter->pRecord;
+ assert( pSorter->aTree==0 );
+ return vdbeSorterSort(pCsr);
+ }
+
+ /* Write the current b-tree to a PMA. Close the b-tree cursor. */
+ rc = vdbeSorterListToPMA(db, pCsr);
+ if( rc!=SQLITE_OK ) return rc;
+
+ /* Allocate space for aIter[] and aTree[]. */
+ nIter = pSorter->nPMA;
+ if( nIter>SORTER_MAX_MERGE_COUNT ) nIter = SORTER_MAX_MERGE_COUNT;
+ assert( nIter>0 );
+ while( N<nIter ) N += N;
+ nByte = N * (sizeof(int) + sizeof(VdbeSorterIter));
+ pSorter->aIter = (VdbeSorterIter *)sqlite3DbMallocZero(db, nByte);
+ if( !pSorter->aIter ) return SQLITE_NOMEM;
+ pSorter->aTree = (int *)&pSorter->aIter[N];
+ pSorter->nTree = N;
+
+ do {
+ int iNew; /* Index of new, merged, PMA */
+
+ for(iNew=0;
+ rc==SQLITE_OK && iNew*SORTER_MAX_MERGE_COUNT<pSorter->nPMA;
+ iNew++
+ ){
+ i64 nWrite; /* Number of bytes in new PMA */
+
+ /* If there are SORTER_MAX_MERGE_COUNT or less PMAs in file pTemp1,
+ ** initialize an iterator for each of them and break out of the loop.
+ ** These iterators will be incrementally merged as the VDBE layer calls
+ ** sqlite3VdbeSorterNext().
+ **
+ ** Otherwise, if pTemp1 contains more than SORTER_MAX_MERGE_COUNT PMAs,
+ ** initialize interators for SORTER_MAX_MERGE_COUNT of them. These PMAs
+ ** are merged into a single PMA that is written to file pTemp2.
+ */
+ rc = vdbeSorterInitMerge(db, pCsr, &nWrite);
+ assert( rc!=SQLITE_OK || pSorter->aIter[ pSorter->aTree[1] ].pFile );
+ if( rc!=SQLITE_OK || pSorter->nPMA<=SORTER_MAX_MERGE_COUNT ){
+ break;
+ }
+
+ /* Open the second temp file, if it is not already open. */
+ if( pTemp2==0 ){
+ assert( iWrite2==0 );
+ rc = vdbeSorterOpenTempFile(db, &pTemp2);
+ }
+
+ if( rc==SQLITE_OK ){
+ rc = vdbeSorterWriteVarint(pTemp2, nWrite, &iWrite2);
+ }
+
+ if( rc==SQLITE_OK ){
+ int bEof = 0;
+ while( rc==SQLITE_OK && bEof==0 ){
+ int nToWrite;
+ VdbeSorterIter *pIter = &pSorter->aIter[ pSorter->aTree[1] ];
+ assert( pIter->pFile );
+ nToWrite = pIter->nKey + sqlite3VarintLen(pIter->nKey);
+ rc = sqlite3OsWrite(pTemp2, pIter->aAlloc, nToWrite, iWrite2);
+ iWrite2 += nToWrite;
+ if( rc==SQLITE_OK ){
+ rc = sqlite3VdbeSorterNext(db, pCsr, &bEof);
+ }
+ }
+ }
+ }
+
+ if( pSorter->nPMA<=SORTER_MAX_MERGE_COUNT ){
+ break;
+ }else{
+ sqlite3_file *pTmp = pSorter->pTemp1;
+ pSorter->nPMA = iNew;
+ pSorter->pTemp1 = pTemp2;
+ pTemp2 = pTmp;
+ pSorter->iWriteOff = iWrite2;
+ pSorter->iReadOff = 0;
+ iWrite2 = 0;
+ }
+ }while( rc==SQLITE_OK );
+
+ if( pTemp2 ){
+ sqlite3OsCloseFree(pTemp2);
+ }
+ *pbEof = (pSorter->aIter[pSorter->aTree[1]].pFile==0);
+ return rc;
+}
+
+/*
+** Advance to the next element in the sorter.
+*/
+SQLITE_PRIVATE int sqlite3VdbeSorterNext(sqlite3 *db, VdbeCursor *pCsr, int *pbEof){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ int rc; /* Return code */
+
+ if( pSorter->aTree ){
+ int iPrev = pSorter->aTree[1];/* Index of iterator to advance */
+ int i; /* Index of aTree[] to recalculate */
+
+ rc = vdbeSorterIterNext(db, &pSorter->aIter[iPrev]);
+ for(i=(pSorter->nTree+iPrev)/2; rc==SQLITE_OK && i>0; i=i/2){
+ rc = vdbeSorterDoCompare(pCsr, i);
+ }
+
+ *pbEof = (pSorter->aIter[pSorter->aTree[1]].pFile==0);
+ }else{
+ SorterRecord *pFree = pSorter->pRecord;
+ pSorter->pRecord = pFree->pNext;
+ pFree->pNext = 0;
+ vdbeSorterRecordFree(db, pFree);
+ *pbEof = !pSorter->pRecord;
+ rc = SQLITE_OK;
+ }
+ return rc;
+}
+
+/*
+** Return a pointer to a buffer owned by the sorter that contains the
+** current key.
+*/
+static void *vdbeSorterRowkey(
+ VdbeSorter *pSorter, /* Sorter object */
+ int *pnKey /* OUT: Size of current key in bytes */
+){
+ void *pKey;
+ if( pSorter->aTree ){
+ VdbeSorterIter *pIter;
+ pIter = &pSorter->aIter[ pSorter->aTree[1] ];
+ *pnKey = pIter->nKey;
+ pKey = pIter->aKey;
+ }else{
+ *pnKey = pSorter->pRecord->nVal;
+ pKey = pSorter->pRecord->pVal;
+ }
+ return pKey;
+}
+
+/*
+** Copy the current sorter key into the memory cell pOut.
+*/
+SQLITE_PRIVATE int sqlite3VdbeSorterRowkey(VdbeCursor *pCsr, Mem *pOut){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ void *pKey; int nKey; /* Sorter key to copy into pOut */
+
+ pKey = vdbeSorterRowkey(pSorter, &nKey);
+ if( sqlite3VdbeMemGrow(pOut, nKey, 0) ){
+ return SQLITE_NOMEM;
+ }
+ pOut->n = nKey;
+ MemSetTypeFlag(pOut, MEM_Blob);
+ memcpy(pOut->z, pKey, nKey);
+
+ return SQLITE_OK;
+}
+
+/*
+** Compare the key in memory cell pVal with the key that the sorter cursor
+** passed as the first argument currently points to. For the purposes of
+** the comparison, ignore the rowid field at the end of each record.
+**
+** If an error occurs, return an SQLite error code (i.e. SQLITE_NOMEM).
+** Otherwise, set *pRes to a negative, zero or positive value if the
+** key in pVal is smaller than, equal to or larger than the current sorter
+** key.
+*/
+SQLITE_PRIVATE int sqlite3VdbeSorterCompare(
+ VdbeCursor *pCsr, /* Sorter cursor */
+ Mem *pVal, /* Value to compare to current sorter key */
+ int *pRes /* OUT: Result of comparison */
+){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ void *pKey; int nKey; /* Sorter key to compare pVal with */
+
+ pKey = vdbeSorterRowkey(pSorter, &nKey);
+ vdbeSorterCompare(pCsr, 1, pVal->z, pVal->n, pKey, nKey, pRes);
+ return SQLITE_OK;
+}
+
+#endif /* #ifndef SQLITE_OMIT_MERGE_SORT */
+
+/************** End of vdbesort.c ********************************************/
/************** Begin file journal.c *****************************************/
/*
** 2007 August 22
@@ -67480,6 +72919,8 @@
** This file contains routines used for walking the parser tree for
** an SQL statement.
*/
+/* #include <stdlib.h> */
+/* #include <string.h> */
/*
@@ -67618,6 +73059,8 @@
** resolve all identifiers by associating them with a particular
** table and column.
*/
+/* #include <stdlib.h> */
+/* #include <string.h> */
/*
** Turn the pExpr expression into an alias for the iCol-th column of the
@@ -67699,6 +73142,24 @@
sqlite3DbFree(db, pDup);
}
+
+/*
+** Return TRUE if the name zCol occurs anywhere in the USING clause.
+**
+** Return FALSE if the USING clause is NULL or if it does not contain
+** zCol.
+*/
+static int nameInUsingClause(IdList *pUsing, const char *zCol){
+ if( pUsing ){
+ int k;
+ for(k=0; k<pUsing->nId; k++){
+ if( sqlite3StrICmp(pUsing->a[k].zName, zCol)==0 ) return 1;
+ }
+ }
+ return 0;
+}
+
+
/*
** Given the name of a column of the form X.Y.Z or Y.Z or just Z, look up
** that name in the set of source tables in pSrcList and make the pExpr
@@ -67790,7 +73251,14 @@
}
for(j=0, pCol=pTab->aCol; j<pTab->nCol; j++, pCol++){
if( sqlite3StrICmp(pCol->zName, zCol)==0 ){
- IdList *pUsing;
+ /* If there has been exactly one prior match and this match
+ ** is for the right-hand table of a NATURAL JOIN or is in a
+ ** USING clause, then skip this match.
+ */
+ if( cnt==1 ){
+ if( pItem->jointype & JT_NATURAL ) continue;
+ if( nameInUsingClause(pItem->pUsing, zCol) ) continue;
+ }
cnt++;
pExpr->iTable = pItem->iCursor;
pExpr->pTab = pTab;
@@ -67798,26 +73266,6 @@
pSchema = pTab->pSchema;
/* Substitute the rowid (column -1) for the INTEGER PRIMARY KEY */
pExpr->iColumn = j==pTab->iPKey ? -1 : (i16)j;
- if( i<pSrcList->nSrc-1 ){
- if( pItem[1].jointype & JT_NATURAL ){
- /* If this match occurred in the left table of a natural join,
- ** then skip the right table to avoid a duplicate match */
- pItem++;
- i++;
- }else if( (pUsing = pItem[1].pUsing)!=0 ){
- /* If this match occurs on a column that is in the USING clause
- ** of a join, skip the search of the right table of the join
- ** to avoid a duplicate match there. */
- int k;
- for(k=0; k<pUsing->nId; k++){
- if( sqlite3StrICmp(pUsing->a[k].zName, zCol)==0 ){
- pItem++;
- i++;
- break;
- }
- }
- }
- }
break;
}
}
@@ -68395,7 +73843,7 @@
pE->pColl = pColl;
pE->flags |= EP_IntValue | flags;
pE->u.iValue = iCol;
- pItem->iCol = (u16)iCol;
+ pItem->iOrderByCol = (u16)iCol;
pItem->done = 1;
}else{
moreToDo = 1;
@@ -68444,12 +73892,12 @@
pEList = pSelect->pEList;
assert( pEList!=0 ); /* sqlite3SelectNew() guarantees this */
for(i=0, pItem=pOrderBy->a; i<pOrderBy->nExpr; i++, pItem++){
- if( pItem->iCol ){
- if( pItem->iCol>pEList->nExpr ){
+ if( pItem->iOrderByCol ){
+ if( pItem->iOrderByCol>pEList->nExpr ){
resolveOutOfRangeError(pParse, zType, i+1, pEList->nExpr);
return 1;
}
- resolveAlias(pParse, pEList, pItem->iCol-1, pItem->pExpr, zType);
+ resolveAlias(pParse, pEList, pItem->iOrderByCol-1, pItem->pExpr, zType);
}
}
return 0;
@@ -68496,7 +73944,7 @@
** a copy of the iCol-th result-set column. The subsequent call to
** sqlite3ResolveOrderGroupBy() will convert the expression to a
** copy of the iCol-th result-set expression. */
- pItem->iCol = (u16)iCol;
+ pItem->iOrderByCol = (u16)iCol;
continue;
}
if( sqlite3ExprIsInteger(pE, &iCol) ){
@@ -68507,12 +73955,12 @@
resolveOutOfRangeError(pParse, zType, i+1, nResult);
return 1;
}
- pItem->iCol = (u16)iCol;
+ pItem->iOrderByCol = (u16)iCol;
continue;
}
/* Otherwise, treat the ORDER BY term as an ordinary expression */
- pItem->iCol = 0;
+ pItem->iOrderByCol = 0;
if( sqlite3ResolveExprNames(pNC, pE) ){
return 1;
}
@@ -68597,11 +74045,25 @@
for(i=0; i<p->pSrc->nSrc; i++){
struct SrcList_item *pItem = &p->pSrc->a[i];
if( pItem->pSelect ){
+ NameContext *pNC; /* Used to iterate name contexts */
+ int nRef = 0; /* Refcount for pOuterNC and outer contexts */
const char *zSavedContext = pParse->zAuthContext;
+
+ /* Count the total number of references to pOuterNC and all of its
+ ** parent contexts. After resolving references to expressions in
+ ** pItem->pSelect, check if this value has changed. If so, then
+ ** SELECT statement pItem->pSelect must be correlated. Set the
+ ** pItem->isCorrelated flag if this is the case. */
+ for(pNC=pOuterNC; pNC; pNC=pNC->pNext) nRef += pNC->nRef;
+
if( pItem->zName ) pParse->zAuthContext = pItem->zName;
sqlite3ResolveSelectNames(pParse, pItem->pSelect, pOuterNC);
pParse->zAuthContext = zSavedContext;
if( pParse->nErr || db->mallocFailed ) return WRC_Abort;
+
+ for(pNC=pOuterNC; pNC; pNC=pNC->pNext) nRef -= pNC->nRef;
+ assert( pItem->isCorrelated==0 && nRef<=0 );
+ pItem->isCorrelated = (nRef!=0);
}
}
@@ -68899,7 +74361,7 @@
SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){
CollSeq *pColl = 0;
Expr *p = pExpr;
- while( ALWAYS(p) ){
+ while( p ){
int op;
pColl = p->pColl;
if( pColl ) break;
@@ -69196,6 +74658,7 @@
if( op!=TK_INTEGER || pToken->z==0
|| sqlite3GetInt32(pToken->z, &iValue)==0 ){
nExtra = pToken->n+1;
+ assert( iValue>=0 );
}
}
pNew = sqlite3DbMallocZero(db, sizeof(Expr)+nExtra);
@@ -69209,7 +74672,8 @@
}else{
int c;
pNew->u.zToken = (char*)&pNew[1];
- memcpy(pNew->u.zToken, pToken->z, pToken->n);
+ assert( pToken->z!=0 || pToken->n==0 );
+ if( pToken->n ) memcpy(pNew->u.zToken, pToken->z, pToken->n);
pNew->u.zToken[pToken->n] = 0;
if( dequote && nExtra>=3
&& ((c = pToken->z[0])=='\'' || c=='"' || c=='[' || c=='`') ){
@@ -69361,53 +74825,53 @@
/* Wildcard of the form "?". Assign the next variable number */
assert( z[0]=='?' );
pExpr->iColumn = (ynVar)(++pParse->nVar);
- }else if( z[0]=='?' ){
- /* Wildcard of the form "?nnn". Convert "nnn" to an integer and
- ** use it as the variable number */
- i64 i;
- int bOk = 0==sqlite3Atoi64(&z[1], &i, sqlite3Strlen30(&z[1]), SQLITE_UTF8);
- pExpr->iColumn = (ynVar)i;
- testcase( i==0 );
- testcase( i==1 );
- testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]-1 );
- testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] );
- if( bOk==0 || i<1 || i>db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ){
- sqlite3ErrorMsg(pParse, "variable number must be between ?1 and ?%d",
- db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]);
- }
- if( i>pParse->nVar ){
- pParse->nVar = (int)i;
- }
}else{
- /* Wildcards like ":aaa", "$aaa" or "@aaa". Reuse the same variable
- ** number as the prior appearance of the same name, or if the name
- ** has never appeared before, reuse the same variable number
- */
- int i;
- u32 n;
- n = sqlite3Strlen30(z);
- for(i=0; i<pParse->nVarExpr; i++){
- Expr *pE = pParse->apVarExpr[i];
- assert( pE!=0 );
- if( memcmp(pE->u.zToken, z, n)==0 && pE->u.zToken[n]==0 ){
- pExpr->iColumn = pE->iColumn;
- break;
+ ynVar x = 0;
+ u32 n = sqlite3Strlen30(z);
+ if( z[0]=='?' ){
+ /* Wildcard of the form "?nnn". Convert "nnn" to an integer and
+ ** use it as the variable number */
+ i64 i;
+ int bOk = 0==sqlite3Atoi64(&z[1], &i, n-1, SQLITE_UTF8);
+ pExpr->iColumn = x = (ynVar)i;
+ testcase( i==0 );
+ testcase( i==1 );
+ testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]-1 );
+ testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] );
+ if( bOk==0 || i<1 || i>db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ){
+ sqlite3ErrorMsg(pParse, "variable number must be between ?1 and ?%d",
+ db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]);
+ x = 0;
}
+ if( i>pParse->nVar ){
+ pParse->nVar = (int)i;
+ }
+ }else{
+ /* Wildcards like ":aaa", "$aaa" or "@aaa". Reuse the same variable
+ ** number as the prior appearance of the same name, or if the name
+ ** has never appeared before, reuse the same variable number
+ */
+ ynVar i;
+ for(i=0; i<pParse->nzVar; i++){
+ if( pParse->azVar[i] && memcmp(pParse->azVar[i],z,n+1)==0 ){
+ pExpr->iColumn = x = (ynVar)i+1;
+ break;
+ }
+ }
+ if( x==0 ) x = pExpr->iColumn = (ynVar)(++pParse->nVar);
}
- if( i>=pParse->nVarExpr ){
- pExpr->iColumn = (ynVar)(++pParse->nVar);
- if( pParse->nVarExpr>=pParse->nVarExprAlloc-1 ){
- pParse->nVarExprAlloc += pParse->nVarExprAlloc + 10;
- pParse->apVarExpr =
- sqlite3DbReallocOrFree(
- db,
- pParse->apVarExpr,
- pParse->nVarExprAlloc*sizeof(pParse->apVarExpr[0])
- );
+ if( x>0 ){
+ if( x>pParse->nzVar ){
+ char **a;
+ a = sqlite3DbRealloc(db, pParse->azVar, x*sizeof(a[0]));
+ if( a==0 ) return; /* Error reported through db->mallocFailed */
+ pParse->azVar = a;
+ memset(&a[pParse->nzVar], 0, (x-pParse->nzVar)*sizeof(a[0]));
+ pParse->nzVar = x;
}
- if( !db->mallocFailed ){
- assert( pParse->apVarExpr!=0 );
- pParse->apVarExpr[pParse->nVarExpr++] = pExpr;
+ if( z[0]!='?' || pParse->azVar[x-1]==0 ){
+ sqlite3DbFree(db, pParse->azVar[x-1]);
+ pParse->azVar[x-1] = sqlite3DbStrNDup(db, z, n);
}
}
}
@@ -69421,6 +74885,8 @@
*/
SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3 *db, Expr *p){
if( p==0 ) return;
+ /* Sanity check: Assert that the IntValue is non-negative if it exists */
+ assert( !ExprHasProperty(p, EP_IntValue) || p->u.iValue>=0 );
if( !ExprHasAnyProperty(p, EP_TokenOnly) ){
sqlite3ExprDelete(db, p->pLeft);
sqlite3ExprDelete(db, p->pRight);
@@ -69673,7 +75139,7 @@
pItem->zSpan = sqlite3DbStrDup(db, pOldItem->zSpan);
pItem->sortOrder = pOldItem->sortOrder;
pItem->done = 0;
- pItem->iCol = pOldItem->iCol;
+ pItem->iOrderByCol = pOldItem->iOrderByCol;
pItem->iAlias = pOldItem->iAlias;
}
return pNew;
@@ -69705,7 +75171,9 @@
pNewItem->zAlias = sqlite3DbStrDup(db, pOldItem->zAlias);
pNewItem->jointype = pOldItem->jointype;
pNewItem->iCursor = pOldItem->iCursor;
- pNewItem->isPopulated = pOldItem->isPopulated;
+ pNewItem->addrFillSub = pOldItem->addrFillSub;
+ pNewItem->regReturn = pOldItem->regReturn;
+ pNewItem->isCorrelated = pOldItem->isCorrelated;
pNewItem->zIndex = sqlite3DbStrDup(db, pOldItem->zIndex);
pNewItem->notIndexed = pOldItem->notIndexed;
pNewItem->pIndex = pOldItem->pIndex;
@@ -69741,7 +75209,7 @@
return pNew;
}
SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3 *db, Select *p, int flags){
- Select *pNew;
+ Select *pNew, *pPrior;
if( p==0 ) return 0;
pNew = sqlite3DbMallocRaw(db, sizeof(*p) );
if( pNew==0 ) return 0;
@@ -69752,7 +75220,9 @@
pNew->pHaving = sqlite3ExprDup(db, p->pHaving, flags);
pNew->pOrderBy = sqlite3ExprListDup(db, p->pOrderBy, flags);
pNew->op = p->op;
- pNew->pPrior = sqlite3SelectDup(db, p->pPrior, flags);
+ pNew->pPrior = pPrior = sqlite3SelectDup(db, p->pPrior, flags);
+ if( pPrior ) pPrior->pNext = pNew;
+ pNew->pNext = 0;
pNew->pLimit = sqlite3ExprDup(db, p->pLimit, flags);
pNew->pOffset = sqlite3ExprDup(db, p->pOffset, flags);
pNew->iLimit = 0;
@@ -70005,16 +75475,17 @@
*/
SQLITE_PRIVATE int sqlite3ExprIsInteger(Expr *p, int *pValue){
int rc = 0;
+
+ /* If an expression is an integer literal that fits in a signed 32-bit
+ ** integer, then the EP_IntValue flag will have already been set */
+ assert( p->op!=TK_INTEGER || (p->flags & EP_IntValue)!=0
+ || sqlite3GetInt32(p->u.zToken, &rc)==0 );
+
if( p->flags & EP_IntValue ){
*pValue = p->u.iValue;
return 1;
}
switch( p->op ){
- case TK_INTEGER: {
- rc = sqlite3GetInt32(p->u.zToken, pValue);
- assert( rc==0 );
- break;
- }
case TK_UPLUS: {
rc = sqlite3ExprIsInteger(p->pLeft, pValue);
break;
@@ -70029,13 +75500,6 @@
}
default: break;
}
- if( rc ){
- assert( ExprHasAnyProperty(p, EP_Reduced|EP_TokenOnly)
- || (p->flags2 & EP2_MallocedToken)==0 );
- p->op = TK_INTEGER;
- p->flags |= EP_IntValue;
- p->u.iValue = *pValue;
- }
return rc;
}
@@ -70181,6 +75645,15 @@
#endif /* SQLITE_OMIT_SUBQUERY */
/*
+** Code an OP_Once instruction and allocate space for its flag. Return the
+** address of the new instruction.
+*/
+SQLITE_PRIVATE int sqlite3CodeOnce(Parse *pParse){
+ Vdbe *v = sqlite3GetVdbe(pParse); /* Virtual machine being coded */
+ return sqlite3VdbeAddOp1(v, OP_Once, pParse->nOnce++);
+}
+
+/*
** This function is used by the implementation of the IN (...) operator.
** It's job is to find or create a b-tree structure that may be used
** either to test for membership of the (...) set or to iterate through
@@ -70240,6 +75713,7 @@
int eType = 0; /* Type of RHS table. IN_INDEX_* */
int iTab = pParse->nTab++; /* Cursor of the RHS table */
int mustBeUnique = (prNotFound==0); /* True if RHS must be unique */
+ Vdbe *v = sqlite3GetVdbe(pParse); /* Virtual machine being coded */
assert( pX->op==TK_IN );
@@ -70250,11 +75724,18 @@
p = (ExprHasProperty(pX, EP_xIsSelect) ? pX->x.pSelect : 0);
if( ALWAYS(pParse->nErr==0) && isCandidateForInOpt(p) ){
sqlite3 *db = pParse->db; /* Database connection */
- Expr *pExpr = p->pEList->a[0].pExpr; /* Expression <column> */
- int iCol = pExpr->iColumn; /* Index of column <column> */
- Vdbe *v = sqlite3GetVdbe(pParse); /* Virtual machine being coded */
- Table *pTab = p->pSrc->a[0].pTab; /* Table <table>. */
+ Table *pTab; /* Table <table>. */
+ Expr *pExpr; /* Expression <column> */
+ int iCol; /* Index of column <column> */
int iDb; /* Database idx for pTab */
+
+ assert( p ); /* Because of isCandidateForInOpt(p) */
+ assert( p->pEList!=0 ); /* Because of isCandidateForInOpt(p) */
+ assert( p->pEList->a[0].pExpr!=0 ); /* Because of isCandidateForInOpt(p) */
+ assert( p->pSrc!=0 ); /* Because of isCandidateForInOpt(p) */
+ pTab = p->pSrc->a[0].pTab;
+ pExpr = p->pEList->a[0].pExpr;
+ iCol = pExpr->iColumn;
/* Code an OP_VerifyCookie and OP_TableLock for <table>. */
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
@@ -70267,11 +75748,9 @@
*/
assert(v);
if( iCol<0 ){
- int iMem = ++pParse->nMem;
int iAddr;
- iAddr = sqlite3VdbeAddOp1(v, OP_If, iMem);
- sqlite3VdbeAddOp2(v, OP_Integer, 1, iMem);
+ iAddr = sqlite3CodeOnce(pParse);
sqlite3OpenTable(pParse, iTab, iDb, pTab, OP_OpenRead);
eType = IN_INDEX_ROWID;
@@ -70297,13 +75776,11 @@
&& sqlite3FindCollSeq(db, ENC(db), pIdx->azColl[0], 0)==pReq
&& (!mustBeUnique || (pIdx->nColumn==1 && pIdx->onError!=OE_None))
){
- int iMem = ++pParse->nMem;
int iAddr;
char *pKey;
pKey = (char *)sqlite3IndexKeyinfo(pParse, pIdx);
- iAddr = sqlite3VdbeAddOp1(v, OP_If, iMem);
- sqlite3VdbeAddOp2(v, OP_Integer, 1, iMem);
+ iAddr = sqlite3CodeOnce(pParse);
sqlite3VdbeAddOp4(v, OP_OpenRead, iTab, pIdx->tnum, iDb,
pKey,P4_KEYINFO_HANDOFF);
@@ -70313,6 +75790,7 @@
sqlite3VdbeJumpHere(v, iAddr);
if( prNotFound && !pTab->aCol[iCol].notNull ){
*prNotFound = ++pParse->nMem;
+ sqlite3VdbeAddOp2(v, OP_Null, 0, *prNotFound);
}
}
}
@@ -70328,6 +75806,7 @@
eType = IN_INDEX_EPH;
if( prNotFound ){
*prNotFound = rMayHaveNull = ++pParse->nMem;
+ sqlite3VdbeAddOp2(v, OP_Null, 0, *prNotFound);
}else{
testcase( pParse->nQueryLoop>(double)1 );
pParse->nQueryLoop = (double)1;
@@ -70384,7 +75863,7 @@
int rMayHaveNull, /* Register that records whether NULLs exist in RHS */
int isRowid /* If true, LHS of IN operator is a rowid */
){
- int testAddr = 0; /* One-time test address */
+ int testAddr = -1; /* One-time test address */
int rReg = 0; /* Register storing resulting */
Vdbe *v = sqlite3GetVdbe(pParse);
if( NEVER(v==0) ) return 0;
@@ -70400,17 +75879,14 @@
** If all of the above are false, then we can run this code just once
** save the results, and reuse the same result on subsequent invocations.
*/
- if( !ExprHasAnyProperty(pExpr, EP_VarSelect) && !pParse->pTriggerTab ){
- int mem = ++pParse->nMem;
- sqlite3VdbeAddOp1(v, OP_If, mem);
- testAddr = sqlite3VdbeAddOp2(v, OP_Integer, 1, mem);
- assert( testAddr>0 || pParse->db->mallocFailed );
+ if( !ExprHasAnyProperty(pExpr, EP_VarSelect) ){
+ testAddr = sqlite3CodeOnce(pParse);
}
#ifndef SQLITE_OMIT_EXPLAIN
if( pParse->explain==2 ){
char *zMsg = sqlite3MPrintf(
- pParse->db, "EXECUTE %s%s SUBQUERY %d", testAddr?"":"CORRELATED ",
+ pParse->db, "EXECUTE %s%s SUBQUERY %d", testAddr>=0?"":"CORRELATED ",
pExpr->op==TK_IN?"LIST":"SCALAR", pParse->iNextSelectId
);
sqlite3VdbeAddOp4(v, OP_Explain, pParse->iSelectId, 0, 0, zMsg, P4_DYNAMIC);
@@ -70502,9 +75978,9 @@
** this code only executes once. Because for a non-constant
** expression we need to rerun this code each time.
*/
- if( testAddr && !sqlite3ExprIsConstant(pE2) ){
- sqlite3VdbeChangeToNoop(v, testAddr-1, 2);
- testAddr = 0;
+ if( testAddr>=0 && !sqlite3ExprIsConstant(pE2) ){
+ sqlite3VdbeChangeToNoop(v, testAddr);
+ testAddr = -1;
}
/* Evaluate the expression and insert it into the temp table */
@@ -70573,8 +76049,8 @@
}
}
- if( testAddr ){
- sqlite3VdbeJumpHere(v, testAddr-1);
+ if( testAddr>=0 ){
+ sqlite3VdbeJumpHere(v, testAddr);
}
sqlite3ExprCachePop(pParse, 1);
@@ -70760,6 +76236,7 @@
Vdbe *v = pParse->pVdbe;
if( pExpr->flags & EP_IntValue ){
int i = pExpr->u.iValue;
+ assert( i>=0 );
if( negFlag ) i = -i;
sqlite3VdbeAddOp2(v, OP_Integer, i, iMem);
}else{
@@ -70770,7 +76247,7 @@
c = sqlite3Atoi64(z, &value, sqlite3Strlen30(z), SQLITE_UTF8);
if( c==0 || (c==2 && negFlag) ){
char *zV;
- if( negFlag ){ value = -value; }
+ if( negFlag ){ value = c==2 ? SMALLEST_INT64 : -value; }
zV = dup8bytes(v, (char*)&value);
sqlite3VdbeAddOp4(v, OP_Int64, 0, iMem, 0, zV, P4_INT64);
}else{
@@ -71095,7 +76572,7 @@
inReg = pCol->iMem;
break;
}else if( pAggInfo->useSortingIdx ){
- sqlite3VdbeAddOp3(v, OP_Column, pAggInfo->sortingIdx,
+ sqlite3VdbeAddOp3(v, OP_Column, pAggInfo->sortingIdxPTab,
pCol->iSorterColumn, target);
break;
}
@@ -71154,7 +76631,9 @@
assert( pExpr->u.zToken[0]!=0 );
sqlite3VdbeAddOp2(v, OP_Variable, pExpr->iColumn, target);
if( pExpr->u.zToken[1]!=0 ){
- sqlite3VdbeChangeP4(v, -1, pExpr->u.zToken, 0);
+ assert( pExpr->u.zToken[0]=='?'
+ || strcmp(pExpr->u.zToken, pParse->azVar[pExpr->iColumn-1])==0 );
+ sqlite3VdbeChangeP4(v, -1, pParse->azVar[pExpr->iColumn-1], P4_STATIC);
}
break;
}
@@ -71739,6 +77218,264 @@
return inReg;
}
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
+/*
+** Generate a human-readable explanation of an expression tree.
+*/
+SQLITE_PRIVATE void sqlite3ExplainExpr(Vdbe *pOut, Expr *pExpr){
+ int op; /* The opcode being coded */
+ const char *zBinOp = 0; /* Binary operator */
+ const char *zUniOp = 0; /* Unary operator */
+ if( pExpr==0 ){
+ op = TK_NULL;
+ }else{
+ op = pExpr->op;
+ }
+ switch( op ){
+ case TK_AGG_COLUMN: {
+ sqlite3ExplainPrintf(pOut, "AGG{%d:%d}",
+ pExpr->iTable, pExpr->iColumn);
+ break;
+ }
+ case TK_COLUMN: {
+ if( pExpr->iTable<0 ){
+ /* This only happens when coding check constraints */
+ sqlite3ExplainPrintf(pOut, "COLUMN(%d)", pExpr->iColumn);
+ }else{
+ sqlite3ExplainPrintf(pOut, "{%d:%d}",
+ pExpr->iTable, pExpr->iColumn);
+ }
+ break;
+ }
+ case TK_INTEGER: {
+ if( pExpr->flags & EP_IntValue ){
+ sqlite3ExplainPrintf(pOut, "%d", pExpr->u.iValue);
+ }else{
+ sqlite3ExplainPrintf(pOut, "%s", pExpr->u.zToken);
+ }
+ break;
+ }
+#ifndef SQLITE_OMIT_FLOATING_POINT
+ case TK_FLOAT: {
+ sqlite3ExplainPrintf(pOut,"%s", pExpr->u.zToken);
+ break;
+ }
+#endif
+ case TK_STRING: {
+ sqlite3ExplainPrintf(pOut,"%Q", pExpr->u.zToken);
+ break;
+ }
+ case TK_NULL: {
+ sqlite3ExplainPrintf(pOut,"NULL");
+ break;
+ }
+#ifndef SQLITE_OMIT_BLOB_LITERAL
+ case TK_BLOB: {
+ sqlite3ExplainPrintf(pOut,"%s", pExpr->u.zToken);
+ break;
+ }
+#endif
+ case TK_VARIABLE: {
+ sqlite3ExplainPrintf(pOut,"VARIABLE(%s,%d)",
+ pExpr->u.zToken, pExpr->iColumn);
+ break;
+ }
+ case TK_REGISTER: {
+ sqlite3ExplainPrintf(pOut,"REGISTER(%d)", pExpr->iTable);
+ break;
+ }
+ case TK_AS: {
+ sqlite3ExplainExpr(pOut, pExpr->pLeft);
+ break;
+ }
+#ifndef SQLITE_OMIT_CAST
+ case TK_CAST: {
+ /* Expressions of the form: CAST(pLeft AS token) */
+ const char *zAff = "unk";
+ switch( sqlite3AffinityType(pExpr->u.zToken) ){
+ case SQLITE_AFF_TEXT: zAff = "TEXT"; break;
+ case SQLITE_AFF_NONE: zAff = "NONE"; break;
+ case SQLITE_AFF_NUMERIC: zAff = "NUMERIC"; break;
+ case SQLITE_AFF_INTEGER: zAff = "INTEGER"; break;
+ case SQLITE_AFF_REAL: zAff = "REAL"; break;
+ }
+ sqlite3ExplainPrintf(pOut, "CAST-%s(", zAff);
+ sqlite3ExplainExpr(pOut, pExpr->pLeft);
+ sqlite3ExplainPrintf(pOut, ")");
+ break;
+ }
+#endif /* SQLITE_OMIT_CAST */
+ case TK_LT: zBinOp = "LT"; break;
+ case TK_LE: zBinOp = "LE"; break;
+ case TK_GT: zBinOp = "GT"; break;
+ case TK_GE: zBinOp = "GE"; break;
+ case TK_NE: zBinOp = "NE"; break;
+ case TK_EQ: zBinOp = "EQ"; break;
+ case TK_IS: zBinOp = "IS"; break;
+ case TK_ISNOT: zBinOp = "ISNOT"; break;
+ case TK_AND: zBinOp = "AND"; break;
+ case TK_OR: zBinOp = "OR"; break;
+ case TK_PLUS: zBinOp = "ADD"; break;
+ case TK_STAR: zBinOp = "MUL"; break;
+ case TK_MINUS: zBinOp = "SUB"; break;
+ case TK_REM: zBinOp = "REM"; break;
+ case TK_BITAND: zBinOp = "BITAND"; break;
+ case TK_BITOR: zBinOp = "BITOR"; break;
+ case TK_SLASH: zBinOp = "DIV"; break;
+ case TK_LSHIFT: zBinOp = "LSHIFT"; break;
+ case TK_RSHIFT: zBinOp = "RSHIFT"; break;
+ case TK_CONCAT: zBinOp = "CONCAT"; break;
+
+ case TK_UMINUS: zUniOp = "UMINUS"; break;
+ case TK_UPLUS: zUniOp = "UPLUS"; break;
+ case TK_BITNOT: zUniOp = "BITNOT"; break;
+ case TK_NOT: zUniOp = "NOT"; break;
+ case TK_ISNULL: zUniOp = "ISNULL"; break;
+ case TK_NOTNULL: zUniOp = "NOTNULL"; break;
+
+ case TK_AGG_FUNCTION:
+ case TK_CONST_FUNC:
+ case TK_FUNCTION: {
+ ExprList *pFarg; /* List of function arguments */
+ if( ExprHasAnyProperty(pExpr, EP_TokenOnly) ){
+ pFarg = 0;
+ }else{
+ pFarg = pExpr->x.pList;
+ }
+ sqlite3ExplainPrintf(pOut, "%sFUNCTION:%s(",
+ op==TK_AGG_FUNCTION ? "AGG_" : "",
+ pExpr->u.zToken);
+ if( pFarg ){
+ sqlite3ExplainExprList(pOut, pFarg);
+ }
+ sqlite3ExplainPrintf(pOut, ")");
+ break;
+ }
+#ifndef SQLITE_OMIT_SUBQUERY
+ case TK_EXISTS: {
+ sqlite3ExplainPrintf(pOut, "EXISTS(");
+ sqlite3ExplainSelect(pOut, pExpr->x.pSelect);
+ sqlite3ExplainPrintf(pOut,")");
+ break;
+ }
+ case TK_SELECT: {
+ sqlite3ExplainPrintf(pOut, "(");
+ sqlite3ExplainSelect(pOut, pExpr->x.pSelect);
+ sqlite3ExplainPrintf(pOut, ")");
+ break;
+ }
+ case TK_IN: {
+ sqlite3ExplainPrintf(pOut, "IN(");
+ sqlite3ExplainExpr(pOut, pExpr->pLeft);
+ sqlite3ExplainPrintf(pOut, ",");
+ if( ExprHasProperty(pExpr, EP_xIsSelect) ){
+ sqlite3ExplainSelect(pOut, pExpr->x.pSelect);
+ }else{
+ sqlite3ExplainExprList(pOut, pExpr->x.pList);
+ }
+ sqlite3ExplainPrintf(pOut, ")");
+ break;
+ }
+#endif /* SQLITE_OMIT_SUBQUERY */
+
+ /*
+ ** x BETWEEN y AND z
+ **
+ ** This is equivalent to
+ **
+ ** x>=y AND x<=z
+ **
+ ** X is stored in pExpr->pLeft.
+ ** Y is stored in pExpr->pList->a[0].pExpr.
+ ** Z is stored in pExpr->pList->a[1].pExpr.
+ */
+ case TK_BETWEEN: {
+ Expr *pX = pExpr->pLeft;
+ Expr *pY = pExpr->x.pList->a[0].pExpr;
+ Expr *pZ = pExpr->x.pList->a[1].pExpr;
+ sqlite3ExplainPrintf(pOut, "BETWEEN(");
+ sqlite3ExplainExpr(pOut, pX);
+ sqlite3ExplainPrintf(pOut, ",");
+ sqlite3ExplainExpr(pOut, pY);
+ sqlite3ExplainPrintf(pOut, ",");
+ sqlite3ExplainExpr(pOut, pZ);
+ sqlite3ExplainPrintf(pOut, ")");
+ break;
+ }
+ case TK_TRIGGER: {
+ /* If the opcode is TK_TRIGGER, then the expression is a reference
+ ** to a column in the new.* or old.* pseudo-tables available to
+ ** trigger programs. In this case Expr.iTable is set to 1 for the
+ ** new.* pseudo-table, or 0 for the old.* pseudo-table. Expr.iColumn
+ ** is set to the column of the pseudo-table to read, or to -1 to
+ ** read the rowid field.
+ */
+ sqlite3ExplainPrintf(pOut, "%s(%d)",
+ pExpr->iTable ? "NEW" : "OLD", pExpr->iColumn);
+ break;
+ }
+ case TK_CASE: {
+ sqlite3ExplainPrintf(pOut, "CASE(");
+ sqlite3ExplainExpr(pOut, pExpr->pLeft);
+ sqlite3ExplainPrintf(pOut, ",");
+ sqlite3ExplainExprList(pOut, pExpr->x.pList);
+ break;
+ }
+#ifndef SQLITE_OMIT_TRIGGER
+ case TK_RAISE: {
+ const char *zType = "unk";
+ switch( pExpr->affinity ){
+ case OE_Rollback: zType = "rollback"; break;
+ case OE_Abort: zType = "abort"; break;
+ case OE_Fail: zType = "fail"; break;
+ case OE_Ignore: zType = "ignore"; break;
+ }
+ sqlite3ExplainPrintf(pOut, "RAISE-%s(%s)", zType, pExpr->u.zToken);
+ break;
+ }
+#endif
+ }
+ if( zBinOp ){
+ sqlite3ExplainPrintf(pOut,"%s(", zBinOp);
+ sqlite3ExplainExpr(pOut, pExpr->pLeft);
+ sqlite3ExplainPrintf(pOut,",");
+ sqlite3ExplainExpr(pOut, pExpr->pRight);
+ sqlite3ExplainPrintf(pOut,")");
+ }else if( zUniOp ){
+ sqlite3ExplainPrintf(pOut,"%s(", zUniOp);
+ sqlite3ExplainExpr(pOut, pExpr->pLeft);
+ sqlite3ExplainPrintf(pOut,")");
+ }
+}
+#endif /* defined(SQLITE_ENABLE_TREE_EXPLAIN) */
+
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
+/*
+** Generate a human-readable explanation of an expression list.
+*/
+SQLITE_PRIVATE void sqlite3ExplainExprList(Vdbe *pOut, ExprList *pList){
+ int i;
+ if( pList==0 || pList->nExpr==0 ){
+ sqlite3ExplainPrintf(pOut, "(empty-list)");
+ return;
+ }else if( pList->nExpr==1 ){
+ sqlite3ExplainExpr(pOut, pList->a[0].pExpr);
+ }else{
+ sqlite3ExplainPush(pOut);
+ for(i=0; i<pList->nExpr; i++){
+ sqlite3ExplainPrintf(pOut, "item[%d] = ", i);
+ sqlite3ExplainPush(pOut);
+ sqlite3ExplainExpr(pOut, pList->a[i].pExpr);
+ sqlite3ExplainPop(pOut);
+ if( i<pList->nExpr-1 ){
+ sqlite3ExplainNL(pOut);
+ }
+ }
+ sqlite3ExplainPop(pOut);
+ }
+}
+#endif /* SQLITE_DEBUG */
+
/*
** Return TRUE if pExpr is an constant expression that is appropriate
** for factoring out of a loop. Appropriate expressions are:
@@ -72058,6 +77795,7 @@
exprCodeBetween(pParse, pExpr, dest, 1, jumpIfNull);
break;
}
+#ifndef SQLITE_OMIT_SUBQUERY
case TK_IN: {
int destIfFalse = sqlite3VdbeMakeLabel(v);
int destIfNull = jumpIfNull ? dest : destIfFalse;
@@ -72066,6 +77804,7 @@
sqlite3VdbeResolveLabel(v, destIfFalse);
break;
}
+#endif
default: {
r1 = sqlite3ExprCodeTemp(pParse, pExpr, ®Free1);
sqlite3VdbeAddOp3(v, OP_If, r1, dest, jumpIfNull!=0);
@@ -72199,6 +77938,7 @@
exprCodeBetween(pParse, pExpr, dest, 0, jumpIfNull);
break;
}
+#ifndef SQLITE_OMIT_SUBQUERY
case TK_IN: {
if( jumpIfNull ){
sqlite3ExprCodeIN(pParse, pExpr, dest, dest);
@@ -72209,6 +77949,7 @@
}
break;
}
+#endif
default: {
r1 = sqlite3ExprCodeTemp(pParse, pExpr, ®Free1);
sqlite3VdbeAddOp3(v, OP_IfNot, r1, dest, jumpIfNull!=0);
@@ -72258,7 +77999,7 @@
}
}else if( pA->op!=TK_COLUMN && pA->u.zToken ){
if( ExprHasProperty(pB, EP_IntValue) || NEVER(pB->u.zToken==0) ) return 2;
- if( sqlite3StrICmp(pA->u.zToken,pB->u.zToken)!=0 ){
+ if( strcmp(pA->u.zToken,pB->u.zToken)!=0 ){
return 2;
}
}
@@ -72559,6 +78300,14 @@
}
}
+/*
+** Mark all temporary registers as being unavailable for reuse.
+*/
+SQLITE_PRIVATE void sqlite3ClearTempRegCache(Parse *pParse){
+ pParse->nTempReg = 0;
+ pParse->nRangeReg = 0;
+}
+
/************** End of expr.c ************************************************/
/************** Begin file alter.c *******************************************/
/*
@@ -72920,19 +78669,35 @@
/* Reload the table, index and permanent trigger schemas. */
zWhere = sqlite3MPrintf(pParse->db, "tbl_name=%Q", zName);
if( !zWhere ) return;
- sqlite3VdbeAddOp4(v, OP_ParseSchema, iDb, 0, 0, zWhere, P4_DYNAMIC);
+ sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere);
#ifndef SQLITE_OMIT_TRIGGER
/* Now, if the table is not stored in the temp database, reload any temp
** triggers. Don't use IN(...) in case SQLITE_OMIT_SUBQUERY is defined.
*/
if( (zWhere=whereTempTriggers(pParse, pTab))!=0 ){
- sqlite3VdbeAddOp4(v, OP_ParseSchema, 1, 0, 0, zWhere, P4_DYNAMIC);
+ sqlite3VdbeAddParseSchemaOp(v, 1, zWhere);
}
#endif
}
/*
+** Parameter zName is the name of a table that is about to be altered
+** (either with ALTER TABLE ... RENAME TO or ALTER TABLE ... ADD COLUMN).
+** If the table is a system table, this function leaves an error message
+** in pParse->zErr (system tables may not be altered) and returns non-zero.
+**
+** Or, if zName is not a system table, zero is returned.
+*/
+static int isSystemTable(Parse *pParse, const char *zName){
+ if( sqlite3Strlen30(zName)>6 && 0==sqlite3StrNICmp(zName, "sqlite_", 7) ){
+ sqlite3ErrorMsg(pParse, "table %s may not be altered", zName);
+ return 1;
+ }
+ return 0;
+}
+
+/*
** Generate code to implement the "ALTER TABLE xxx RENAME TO yyy"
** command.
*/
@@ -72982,14 +78747,11 @@
/* Make sure it is not a system table being altered, or a reserved name
** that the table is being renamed to.
*/
- if( sqlite3Strlen30(pTab->zName)>6
- && 0==sqlite3StrNICmp(pTab->zName, "sqlite_", 7)
- ){
- sqlite3ErrorMsg(pParse, "table %s may not be altered", pTab->zName);
+ if( SQLITE_OK!=isSystemTable(pParse, pTab->zName) ){
goto exit_rename_table;
}
- if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){
- goto exit_rename_table;
+ if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){ goto
+ exit_rename_table;
}
#ifndef SQLITE_OMIT_VIEW
@@ -73321,6 +79083,9 @@
sqlite3ErrorMsg(pParse, "Cannot add a column to a view");
goto exit_begin_add_column;
}
+ if( SQLITE_OK!=isSystemTable(pParse, pTab->zName) ){
+ goto exit_begin_add_column;
+ }
assert( pTab->addColOffset>0 );
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
@@ -73385,22 +79150,124 @@
**
*************************************************************************
** This file contains code associated with the ANALYZE command.
+**
+** The ANALYZE command gather statistics about the content of tables
+** and indices. These statistics are made available to the query planner
+** to help it make better decisions about how to perform queries.
+**
+** The following system tables are or have been supported:
+**
+** CREATE TABLE sqlite_stat1(tbl, idx, stat);
+** CREATE TABLE sqlite_stat2(tbl, idx, sampleno, sample);
+** CREATE TABLE sqlite_stat3(tbl, idx, nEq, nLt, nDLt, sample);
+**
+** Additional tables might be added in future releases of SQLite.
+** The sqlite_stat2 table is not created or used unless the SQLite version
+** is between 3.6.18 and 3.7.8, inclusive, and unless SQLite is compiled
+** with SQLITE_ENABLE_STAT2. The sqlite_stat2 table is deprecated.
+** The sqlite_stat2 table is superceded by sqlite_stat3, which is only
+** created and used by SQLite versions 3.7.9 and later and with
+** SQLITE_ENABLE_STAT3 defined. The fucntionality of sqlite_stat3
+** is a superset of sqlite_stat2.
+**
+** Format of sqlite_stat1:
+**
+** There is normally one row per index, with the index identified by the
+** name in the idx column. The tbl column is the name of the table to
+** which the index belongs. In each such row, the stat column will be
+** a string consisting of a list of integers. The first integer in this
+** list is the number of rows in the index and in the table. The second
+** integer is the average number of rows in the index that have the same
+** value in the first column of the index. The third integer is the average
+** number of rows in the index that have the same value for the first two
+** columns. The N-th integer (for N>1) is the average number of rows in
+** the index which have the same value for the first N-1 columns. For
+** a K-column index, there will be K+1 integers in the stat column. If
+** the index is unique, then the last integer will be 1.
+**
+** The list of integers in the stat column can optionally be followed
+** by the keyword "unordered". The "unordered" keyword, if it is present,
+** must be separated from the last integer by a single space. If the
+** "unordered" keyword is present, then the query planner assumes that
+** the index is unordered and will not use the index for a range query.
+**
+** If the sqlite_stat1.idx column is NULL, then the sqlite_stat1.stat
+** column contains a single integer which is the (estimated) number of
+** rows in the table identified by sqlite_stat1.tbl.
+**
+** Format of sqlite_stat2:
+**
+** The sqlite_stat2 is only created and is only used if SQLite is compiled
+** with SQLITE_ENABLE_STAT2 and if the SQLite version number is between
+** 3.6.18 and 3.7.8. The "stat2" table contains additional information
+** about the distribution of keys within an index. The index is identified by
+** the "idx" column and the "tbl" column is the name of the table to which
+** the index belongs. There are usually 10 rows in the sqlite_stat2
+** table for each index.
+**
+** The sqlite_stat2 entries for an index that have sampleno between 0 and 9
+** inclusive are samples of the left-most key value in the index taken at
+** evenly spaced points along the index. Let the number of samples be S
+** (10 in the standard build) and let C be the number of rows in the index.
+** Then the sampled rows are given by:
+**
+** rownumber = (i*C*2 + C)/(S*2)
+**
+** For i between 0 and S-1. Conceptually, the index space is divided into
+** S uniform buckets and the samples are the middle row from each bucket.
+**
+** The format for sqlite_stat2 is recorded here for legacy reference. This
+** version of SQLite does not support sqlite_stat2. It neither reads nor
+** writes the sqlite_stat2 table. This version of SQLite only supports
+** sqlite_stat3.
+**
+** Format for sqlite_stat3:
+**
+** The sqlite_stat3 is an enhancement to sqlite_stat2. A new name is
+** used to avoid compatibility problems.
+**
+** The format of the sqlite_stat3 table is similar to the format of
+** the sqlite_stat2 table. There are multiple entries for each index.
+** The idx column names the index and the tbl column is the table of the
+** index. If the idx and tbl columns are the same, then the sample is
+** of the INTEGER PRIMARY KEY. The sample column is a value taken from
+** the left-most column of the index. The nEq column is the approximate
+** number of entires in the index whose left-most column exactly matches
+** the sample. nLt is the approximate number of entires whose left-most
+** column is less than the sample. The nDLt column is the approximate
+** number of distinct left-most entries in the index that are less than
+** the sample.
+**
+** Future versions of SQLite might change to store a string containing
+** multiple integers values in the nDLt column of sqlite_stat3. The first
+** integer will be the number of prior index entires that are distinct in
+** the left-most column. The second integer will be the number of prior index
+** entries that are distinct in the first two columns. The third integer
+** will be the number of prior index entries that are distinct in the first
+** three columns. And so forth. With that extension, the nDLt field is
+** similar in function to the sqlite_stat1.stat field.
+**
+** There can be an arbitrary number of sqlite_stat3 entries per index.
+** The ANALYZE command will typically generate sqlite_stat3 tables
+** that contain between 10 and 40 samples which are distributed across
+** the key space, though not uniformly, and which include samples with
+** largest possible nEq values.
*/
#ifndef SQLITE_OMIT_ANALYZE
/*
** This routine generates code that opens the sqlite_stat1 table for
** writing with cursor iStatCur. If the library was built with the
-** SQLITE_ENABLE_STAT2 macro defined, then the sqlite_stat2 table is
+** SQLITE_ENABLE_STAT3 macro defined, then the sqlite_stat3 table is
** opened for writing using cursor (iStatCur+1)
**
** If the sqlite_stat1 tables does not previously exist, it is created.
-** Similarly, if the sqlite_stat2 table does not exist and the library
-** is compiled with SQLITE_ENABLE_STAT2 defined, it is created.
+** Similarly, if the sqlite_stat3 table does not exist and the library
+** is compiled with SQLITE_ENABLE_STAT3 defined, it is created.
**
** Argument zWhere may be a pointer to a buffer containing a table name,
** or it may be a NULL pointer. If it is not NULL, then all entries in
-** the sqlite_stat1 and (if applicable) sqlite_stat2 tables associated
+** the sqlite_stat1 and (if applicable) sqlite_stat3 tables associated
** with the named table are deleted. If zWhere==0, then code is generated
** to delete all stat table entries.
*/
@@ -73408,15 +79275,16 @@
Parse *pParse, /* Parsing context */
int iDb, /* The database we are looking in */
int iStatCur, /* Open the sqlite_stat1 table on this cursor */
- const char *zWhere /* Delete entries associated with this table */
+ const char *zWhere, /* Delete entries for this table or index */
+ const char *zWhereType /* Either "tbl" or "idx" */
){
static const struct {
const char *zName;
const char *zCols;
} aTable[] = {
{ "sqlite_stat1", "tbl,idx,stat" },
-#ifdef SQLITE_ENABLE_STAT2
- { "sqlite_stat2", "tbl,idx,sampleno,sample" },
+#ifdef SQLITE_ENABLE_STAT3
+ { "sqlite_stat3", "tbl,idx,neq,nlt,ndlt,sample" },
#endif
};
@@ -73432,6 +79300,9 @@
assert( sqlite3VdbeDb(v)==db );
pDb = &db->aDb[iDb];
+ /* Create new statistic tables if they do not exist, or clear them
+ ** if they do already exist.
+ */
for(i=0; i<ArraySize(aTable); i++){
const char *zTab = aTable[i].zName;
Table *pStat;
@@ -73453,7 +79324,7 @@
sqlite3TableLock(pParse, iDb, aRoot[i], 1, zTab);
if( zWhere ){
sqlite3NestedParse(pParse,
- "DELETE FROM %Q.%s WHERE tbl=%Q", pDb->zName, zTab, zWhere
+ "DELETE FROM %Q.%s WHERE %s=%Q", pDb->zName, zTab, zWhereType, zWhere
);
}else{
/* The sqlite_stat[12] table already exists. Delete all rows. */
@@ -73462,7 +79333,7 @@
}
}
- /* Open the sqlite_stat[12] tables for writing. */
+ /* Open the sqlite_stat[13] tables for writing. */
for(i=0; i<ArraySize(aTable); i++){
sqlite3VdbeAddOp3(v, OP_OpenWrite, iStatCur+i, aRoot[i], iDb);
sqlite3VdbeChangeP4(v, -1, (char *)3, P4_INT32);
@@ -73471,12 +79342,233 @@
}
/*
+** Recommended number of samples for sqlite_stat3
+*/
+#ifndef SQLITE_STAT3_SAMPLES
+# define SQLITE_STAT3_SAMPLES 24
+#endif
+
+/*
+** Three SQL functions - stat3_init(), stat3_push(), and stat3_pop() -
+** share an instance of the following structure to hold their state
+** information.
+*/
+typedef struct Stat3Accum Stat3Accum;
+struct Stat3Accum {
+ tRowcnt nRow; /* Number of rows in the entire table */
+ tRowcnt nPSample; /* How often to do a periodic sample */
+ int iMin; /* Index of entry with minimum nEq and hash */
+ int mxSample; /* Maximum number of samples to accumulate */
+ int nSample; /* Current number of samples */
+ u32 iPrn; /* Pseudo-random number used for sampling */
+ struct Stat3Sample {
+ i64 iRowid; /* Rowid in main table of the key */
+ tRowcnt nEq; /* sqlite_stat3.nEq */
+ tRowcnt nLt; /* sqlite_stat3.nLt */
+ tRowcnt nDLt; /* sqlite_stat3.nDLt */
+ u8 isPSample; /* True if a periodic sample */
+ u32 iHash; /* Tiebreaker hash */
+ } *a; /* An array of samples */
+};
+
+#ifdef SQLITE_ENABLE_STAT3
+/*
+** Implementation of the stat3_init(C,S) SQL function. The two parameters
+** are the number of rows in the table or index (C) and the number of samples
+** to accumulate (S).
+**
+** This routine allocates the Stat3Accum object.
+**
+** The return value is the Stat3Accum object (P).
+*/
+static void stat3Init(
+ sqlite3_context *context,
+ int argc,
+ sqlite3_value **argv
+){
+ Stat3Accum *p;
+ tRowcnt nRow;
+ int mxSample;
+ int n;
+
+ UNUSED_PARAMETER(argc);
+ nRow = (tRowcnt)sqlite3_value_int64(argv[0]);
+ mxSample = sqlite3_value_int(argv[1]);
+ n = sizeof(*p) + sizeof(p->a[0])*mxSample;
+ p = sqlite3_malloc( n );
+ if( p==0 ){
+ sqlite3_result_error_nomem(context);
+ return;
+ }
+ memset(p, 0, n);
+ p->a = (struct Stat3Sample*)&p[1];
+ p->nRow = nRow;
+ p->mxSample = mxSample;
+ p->nPSample = p->nRow/(mxSample/3+1) + 1;
+ sqlite3_randomness(sizeof(p->iPrn), &p->iPrn);
+ sqlite3_result_blob(context, p, sizeof(p), sqlite3_free);
+}
+static const FuncDef stat3InitFuncdef = {
+ 2, /* nArg */
+ SQLITE_UTF8, /* iPrefEnc */
+ 0, /* flags */
+ 0, /* pUserData */
+ 0, /* pNext */
+ stat3Init, /* xFunc */
+ 0, /* xStep */
+ 0, /* xFinalize */
+ "stat3_init", /* zName */
+ 0, /* pHash */
+ 0 /* pDestructor */
+};
+
+
+/*
+** Implementation of the stat3_push(nEq,nLt,nDLt,rowid,P) SQL function. The
+** arguments describe a single key instance. This routine makes the
+** decision about whether or not to retain this key for the sqlite_stat3
+** table.
+**
+** The return value is NULL.
+*/
+static void stat3Push(
+ sqlite3_context *context,
+ int argc,
+ sqlite3_value **argv
+){
+ Stat3Accum *p = (Stat3Accum*)sqlite3_value_blob(argv[4]);
+ tRowcnt nEq = sqlite3_value_int64(argv[0]);
+ tRowcnt nLt = sqlite3_value_int64(argv[1]);
+ tRowcnt nDLt = sqlite3_value_int64(argv[2]);
+ i64 rowid = sqlite3_value_int64(argv[3]);
+ u8 isPSample = 0;
+ u8 doInsert = 0;
+ int iMin = p->iMin;
+ struct Stat3Sample *pSample;
+ int i;
+ u32 h;
+
+ UNUSED_PARAMETER(context);
+ UNUSED_PARAMETER(argc);
+ if( nEq==0 ) return;
+ h = p->iPrn = p->iPrn*1103515245 + 12345;
+ if( (nLt/p->nPSample)!=((nEq+nLt)/p->nPSample) ){
+ doInsert = isPSample = 1;
+ }else if( p->nSample<p->mxSample ){
+ doInsert = 1;
+ }else{
+ if( nEq>p->a[iMin].nEq || (nEq==p->a[iMin].nEq && h>p->a[iMin].iHash) ){
+ doInsert = 1;
+ }
+ }
+ if( !doInsert ) return;
+ if( p->nSample==p->mxSample ){
+ assert( p->nSample - iMin - 1 >= 0 );
+ memmove(&p->a[iMin], &p->a[iMin+1], sizeof(p->a[0])*(p->nSample-iMin-1));
+ pSample = &p->a[p->nSample-1];
+ }else{
+ pSample = &p->a[p->nSample++];
+ }
+ pSample->iRowid = rowid;
+ pSample->nEq = nEq;
+ pSample->nLt = nLt;
+ pSample->nDLt = nDLt;
+ pSample->iHash = h;
+ pSample->isPSample = isPSample;
+
+ /* Find the new minimum */
+ if( p->nSample==p->mxSample ){
+ pSample = p->a;
+ i = 0;
+ while( pSample->isPSample ){
+ i++;
+ pSample++;
+ assert( i<p->nSample );
+ }
+ nEq = pSample->nEq;
+ h = pSample->iHash;
+ iMin = i;
+ for(i++, pSample++; i<p->nSample; i++, pSample++){
+ if( pSample->isPSample ) continue;
+ if( pSample->nEq<nEq
+ || (pSample->nEq==nEq && pSample->iHash<h)
+ ){
+ iMin = i;
+ nEq = pSample->nEq;
+ h = pSample->iHash;
+ }
+ }
+ p->iMin = iMin;
+ }
+}
+static const FuncDef stat3PushFuncdef = {
+ 5, /* nArg */
+ SQLITE_UTF8, /* iPrefEnc */
+ 0, /* flags */
+ 0, /* pUserData */
+ 0, /* pNext */
+ stat3Push, /* xFunc */
+ 0, /* xStep */
+ 0, /* xFinalize */
+ "stat3_push", /* zName */
+ 0, /* pHash */
+ 0 /* pDestructor */
+};
+
+/*
+** Implementation of the stat3_get(P,N,...) SQL function. This routine is
+** used to query the results. Content is returned for the Nth sqlite_stat3
+** row where N is between 0 and S-1 and S is the number of samples. The
+** value returned depends on the number of arguments.
+**
+** argc==2 result: rowid
+** argc==3 result: nEq
+** argc==4 result: nLt
+** argc==5 result: nDLt
+*/
+static void stat3Get(
+ sqlite3_context *context,
+ int argc,
+ sqlite3_value **argv
+){
+ int n = sqlite3_value_int(argv[1]);
+ Stat3Accum *p = (Stat3Accum*)sqlite3_value_blob(argv[0]);
+
+ assert( p!=0 );
+ if( p->nSample<=n ) return;
+ switch( argc ){
+ case 2: sqlite3_result_int64(context, p->a[n].iRowid); break;
+ case 3: sqlite3_result_int64(context, p->a[n].nEq); break;
+ case 4: sqlite3_result_int64(context, p->a[n].nLt); break;
+ default: sqlite3_result_int64(context, p->a[n].nDLt); break;
+ }
+}
+static const FuncDef stat3GetFuncdef = {
+ -1, /* nArg */
+ SQLITE_UTF8, /* iPrefEnc */
+ 0, /* flags */
+ 0, /* pUserData */
+ 0, /* pNext */
+ stat3Get, /* xFunc */
+ 0, /* xStep */
+ 0, /* xFinalize */
+ "stat3_get", /* zName */
+ 0, /* pHash */
+ 0 /* pDestructor */
+};
+#endif /* SQLITE_ENABLE_STAT3 */
+
+
+
+
+/*
** Generate code to do an analysis of all indices associated with
** a single table.
*/
static void analyzeOneTable(
Parse *pParse, /* Parser context */
Table *pTab, /* Table whose indices are to be analyzed */
+ Index *pOnlyIdx, /* If not NULL, only analyze this one index */
int iStatCur, /* Index of VdbeCursor that writes the sqlite_stat1 table */
int iMem /* Available memory locations begin here */
){
@@ -73487,24 +79579,31 @@
int i; /* Loop counter */
int topOfLoop; /* The top of the loop */
int endOfLoop; /* The end of the loop */
- int addr = 0; /* The address of an instruction */
- int jZeroRows = 0; /* Jump from here if number of rows is zero */
+ int jZeroRows = -1; /* Jump from here if number of rows is zero */
int iDb; /* Index of database containing pTab */
int regTabname = iMem++; /* Register containing table name */
int regIdxname = iMem++; /* Register containing index name */
- int regSampleno = iMem++; /* Register containing next sample number */
- int regCol = iMem++; /* Content of a column analyzed table */
+ int regStat1 = iMem++; /* The stat column of sqlite_stat1 */
+#ifdef SQLITE_ENABLE_STAT3
+ int regNumEq = regStat1; /* Number of instances. Same as regStat1 */
+ int regNumLt = iMem++; /* Number of keys less than regSample */
+ int regNumDLt = iMem++; /* Number of distinct keys less than regSample */
+ int regSample = iMem++; /* The next sample value */
+ int regRowid = regSample; /* Rowid of a sample */
+ int regAccum = iMem++; /* Register to hold Stat3Accum object */
+ int regLoop = iMem++; /* Loop counter */
+ int regCount = iMem++; /* Number of rows in the table or index */
+ int regTemp1 = iMem++; /* Intermediate register */
+ int regTemp2 = iMem++; /* Intermediate register */
+ int once = 1; /* One-time initialization */
+ int shortJump = 0; /* Instruction address */
+ int iTabCur = pParse->nTab++; /* Table cursor */
+#endif
+ int regCol = iMem++; /* Content of a column in analyzed table */
int regRec = iMem++; /* Register holding completed record */
int regTemp = iMem++; /* Temporary use register */
- int regRowid = iMem++; /* Rowid for the inserted record */
+ int regNewRowid = iMem++; /* Rowid for the inserted record */
-#ifdef SQLITE_ENABLE_STAT2
- int regTemp2 = iMem++; /* Temporary use register */
- int regSamplerecno = iMem++; /* Index of next sample to record */
- int regRecno = iMem++; /* Current sample index */
- int regLast = iMem++; /* Index of last sample to record */
- int regFirst = iMem++; /* Index of first sample to record */
-#endif
v = sqlite3GetVdbe(pParse);
if( v==0 || NEVER(pTab==0) ){
@@ -73521,6 +79620,7 @@
assert( sqlite3BtreeHoldsAllMutexes(db) );
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
assert( iDb>=0 );
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
#ifndef SQLITE_OMIT_AUTHORIZATION
if( sqlite3AuthCheck(pParse, SQLITE_ANALYZE, pTab->zName, 0,
db->aDb[iDb].zName ) ){
@@ -73534,9 +79634,17 @@
iIdxCur = pParse->nTab++;
sqlite3VdbeAddOp4(v, OP_String8, 0, regTabname, 0, pTab->zName, 0);
for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
- int nCol = pIdx->nColumn;
- KeyInfo *pKey = sqlite3IndexKeyinfo(pParse, pIdx);
+ int nCol;
+ KeyInfo *pKey;
+ int addrIfNot = 0; /* address of OP_IfNot */
+ int *aChngAddr; /* Array of jump instruction addresses */
+ if( pOnlyIdx && pOnlyIdx!=pIdx ) continue;
+ VdbeNoopComment((v, "Begin analysis of %s", pIdx->zName));
+ nCol = pIdx->nColumn;
+ aChngAddr = sqlite3DbMallocRaw(db, sizeof(int)*nCol);
+ if( aChngAddr==0 ) continue;
+ pKey = sqlite3IndexKeyinfo(pParse, pIdx);
if( iMem+1+(nCol*2)>pParse->nMem ){
pParse->nMem = iMem+1+(nCol*2);
}
@@ -73550,31 +79658,21 @@
/* Populate the register containing the index name. */
sqlite3VdbeAddOp4(v, OP_String8, 0, regIdxname, 0, pIdx->zName, 0);
-#ifdef SQLITE_ENABLE_STAT2
-
- /* If this iteration of the loop is generating code to analyze the
- ** first index in the pTab->pIndex list, then register regLast has
- ** not been populated. In this case populate it now. */
- if( pTab->pIndex==pIdx ){
- sqlite3VdbeAddOp2(v, OP_Integer, SQLITE_INDEX_SAMPLES, regSamplerecno);
- sqlite3VdbeAddOp2(v, OP_Integer, SQLITE_INDEX_SAMPLES*2-1, regTemp);
- sqlite3VdbeAddOp2(v, OP_Integer, SQLITE_INDEX_SAMPLES*2, regTemp2);
-
- sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regLast);
- sqlite3VdbeAddOp2(v, OP_Null, 0, regFirst);
- addr = sqlite3VdbeAddOp3(v, OP_Lt, regSamplerecno, 0, regLast);
- sqlite3VdbeAddOp3(v, OP_Divide, regTemp2, regLast, regFirst);
- sqlite3VdbeAddOp3(v, OP_Multiply, regLast, regTemp, regLast);
- sqlite3VdbeAddOp2(v, OP_AddImm, regLast, SQLITE_INDEX_SAMPLES*2-2);
- sqlite3VdbeAddOp3(v, OP_Divide, regTemp2, regLast, regLast);
- sqlite3VdbeJumpHere(v, addr);
+#ifdef SQLITE_ENABLE_STAT3
+ if( once ){
+ once = 0;
+ sqlite3OpenTable(pParse, iTabCur, iDb, pTab, OP_OpenRead);
}
-
- /* Zero the regSampleno and regRecno registers. */
- sqlite3VdbeAddOp2(v, OP_Integer, 0, regSampleno);
- sqlite3VdbeAddOp2(v, OP_Integer, 0, regRecno);
- sqlite3VdbeAddOp2(v, OP_Copy, regFirst, regSamplerecno);
-#endif
+ sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regCount);
+ sqlite3VdbeAddOp2(v, OP_Integer, SQLITE_STAT3_SAMPLES, regTemp1);
+ sqlite3VdbeAddOp2(v, OP_Integer, 0, regNumEq);
+ sqlite3VdbeAddOp2(v, OP_Integer, 0, regNumLt);
+ sqlite3VdbeAddOp2(v, OP_Integer, -1, regNumDLt);
+ sqlite3VdbeAddOp3(v, OP_Null, 0, regSample, regAccum);
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regCount, regAccum,
+ (char*)&stat3InitFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 2);
+#endif /* SQLITE_ENABLE_STAT3 */
/* The block of memory cells initialized here is used as follows.
**
@@ -73604,65 +79702,83 @@
endOfLoop = sqlite3VdbeMakeLabel(v);
sqlite3VdbeAddOp2(v, OP_Rewind, iIdxCur, endOfLoop);
topOfLoop = sqlite3VdbeCurrentAddr(v);
- sqlite3VdbeAddOp2(v, OP_AddImm, iMem, 1);
+ sqlite3VdbeAddOp2(v, OP_AddImm, iMem, 1); /* Increment row counter */
for(i=0; i<nCol; i++){
+ CollSeq *pColl;
sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, i, regCol);
-#ifdef SQLITE_ENABLE_STAT2
if( i==0 ){
- /* Check if the record that cursor iIdxCur points to contains a
- ** value that should be stored in the sqlite_stat2 table. If so,
- ** store it. */
- int ne = sqlite3VdbeAddOp3(v, OP_Ne, regRecno, 0, regSamplerecno);
- assert( regTabname+1==regIdxname
- && regTabname+2==regSampleno
- && regTabname+3==regCol
- );
- sqlite3VdbeChangeP5(v, SQLITE_JUMPIFNULL);
- sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 4, regRec, "aaab", 0);
- sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur+1, regRowid);
- sqlite3VdbeAddOp3(v, OP_Insert, iStatCur+1, regRec, regRowid);
-
- /* Calculate new values for regSamplerecno and regSampleno.
- **
- ** sampleno = sampleno + 1
- ** samplerecno = samplerecno+(remaining records)/(remaining samples)
- */
- sqlite3VdbeAddOp2(v, OP_AddImm, regSampleno, 1);
- sqlite3VdbeAddOp3(v, OP_Subtract, regRecno, regLast, regTemp);
- sqlite3VdbeAddOp2(v, OP_AddImm, regTemp, -1);
- sqlite3VdbeAddOp2(v, OP_Integer, SQLITE_INDEX_SAMPLES, regTemp2);
- sqlite3VdbeAddOp3(v, OP_Subtract, regSampleno, regTemp2, regTemp2);
- sqlite3VdbeAddOp3(v, OP_Divide, regTemp2, regTemp, regTemp);
- sqlite3VdbeAddOp3(v, OP_Add, regSamplerecno, regTemp, regSamplerecno);
-
- sqlite3VdbeJumpHere(v, ne);
- sqlite3VdbeAddOp2(v, OP_AddImm, regRecno, 1);
+ /* Always record the very first row */
+ addrIfNot = sqlite3VdbeAddOp1(v, OP_IfNot, iMem+1);
+ }
+ assert( pIdx->azColl!=0 );
+ assert( pIdx->azColl[i]!=0 );
+ pColl = sqlite3LocateCollSeq(pParse, pIdx->azColl[i]);
+ aChngAddr[i] = sqlite3VdbeAddOp4(v, OP_Ne, regCol, 0, iMem+nCol+i+1,
+ (char*)pColl, P4_COLLSEQ);
+ sqlite3VdbeChangeP5(v, SQLITE_NULLEQ);
+ VdbeComment((v, "jump if column %d changed", i));
+#ifdef SQLITE_ENABLE_STAT3
+ if( i==0 ){
+ sqlite3VdbeAddOp2(v, OP_AddImm, regNumEq, 1);
+ VdbeComment((v, "incr repeat count"));
}
#endif
-
- sqlite3VdbeAddOp3(v, OP_Ne, regCol, 0, iMem+nCol+i+1);
- /**** TODO: add collating sequence *****/
- sqlite3VdbeChangeP5(v, SQLITE_JUMPIFNULL);
- }
- if( db->mallocFailed ){
- /* If a malloc failure has occurred, then the result of the expression
- ** passed as the second argument to the call to sqlite3VdbeJumpHere()
- ** below may be negative. Which causes an assert() to fail (or an
- ** out-of-bounds write if SQLITE_DEBUG is not defined). */
- return;
}
sqlite3VdbeAddOp2(v, OP_Goto, 0, endOfLoop);
for(i=0; i<nCol; i++){
- sqlite3VdbeJumpHere(v, sqlite3VdbeCurrentAddr(v)-(nCol*2));
+ sqlite3VdbeJumpHere(v, aChngAddr[i]); /* Set jump dest for the OP_Ne */
+ if( i==0 ){
+ sqlite3VdbeJumpHere(v, addrIfNot); /* Jump dest for OP_IfNot */
+#ifdef SQLITE_ENABLE_STAT3
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regNumEq, regTemp2,
+ (char*)&stat3PushFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 5);
+ sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, pIdx->nColumn, regRowid);
+ sqlite3VdbeAddOp3(v, OP_Add, regNumEq, regNumLt, regNumLt);
+ sqlite3VdbeAddOp2(v, OP_AddImm, regNumDLt, 1);
+ sqlite3VdbeAddOp2(v, OP_Integer, 1, regNumEq);
+#endif
+ }
sqlite3VdbeAddOp2(v, OP_AddImm, iMem+i+1, 1);
sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, i, iMem+nCol+i+1);
}
+ sqlite3DbFree(db, aChngAddr);
- /* End of the analysis loop. */
+ /* Always jump here after updating the iMem+1...iMem+1+nCol counters */
sqlite3VdbeResolveLabel(v, endOfLoop);
+
sqlite3VdbeAddOp2(v, OP_Next, iIdxCur, topOfLoop);
sqlite3VdbeAddOp1(v, OP_Close, iIdxCur);
+#ifdef SQLITE_ENABLE_STAT3
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regNumEq, regTemp2,
+ (char*)&stat3PushFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 5);
+ sqlite3VdbeAddOp2(v, OP_Integer, -1, regLoop);
+ shortJump =
+ sqlite3VdbeAddOp2(v, OP_AddImm, regLoop, 1);
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regAccum, regTemp1,
+ (char*)&stat3GetFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 2);
+ sqlite3VdbeAddOp1(v, OP_IsNull, regTemp1);
+ sqlite3VdbeAddOp3(v, OP_NotExists, iTabCur, shortJump, regTemp1);
+ sqlite3VdbeAddOp3(v, OP_Column, iTabCur, pIdx->aiColumn[0], regSample);
+ sqlite3ColumnDefault(v, pTab, pIdx->aiColumn[0], regSample);
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regAccum, regNumEq,
+ (char*)&stat3GetFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 3);
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regAccum, regNumLt,
+ (char*)&stat3GetFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 4);
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regAccum, regNumDLt,
+ (char*)&stat3GetFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 5);
+ sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 6, regRec, "bbbbbb", 0);
+ sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur+1, regNewRowid);
+ sqlite3VdbeAddOp3(v, OP_Insert, iStatCur+1, regRec, regNewRowid);
+ sqlite3VdbeAddOp2(v, OP_Goto, 0, shortJump);
+ sqlite3VdbeJumpHere(v, shortJump+2);
+#endif
/* Store the results in sqlite_stat1.
**
@@ -73682,22 +79798,22 @@
** If K>0 then it is always the case the D>0 so division by zero
** is never possible.
*/
- sqlite3VdbeAddOp2(v, OP_SCopy, iMem, regSampleno);
- if( jZeroRows==0 ){
+ sqlite3VdbeAddOp2(v, OP_SCopy, iMem, regStat1);
+ if( jZeroRows<0 ){
jZeroRows = sqlite3VdbeAddOp1(v, OP_IfNot, iMem);
}
for(i=0; i<nCol; i++){
sqlite3VdbeAddOp4(v, OP_String8, 0, regTemp, 0, " ", 0);
- sqlite3VdbeAddOp3(v, OP_Concat, regTemp, regSampleno, regSampleno);
+ sqlite3VdbeAddOp3(v, OP_Concat, regTemp, regStat1, regStat1);
sqlite3VdbeAddOp3(v, OP_Add, iMem, iMem+i+1, regTemp);
sqlite3VdbeAddOp2(v, OP_AddImm, regTemp, -1);
sqlite3VdbeAddOp3(v, OP_Divide, iMem+i+1, regTemp, regTemp);
sqlite3VdbeAddOp1(v, OP_ToInt, regTemp);
- sqlite3VdbeAddOp3(v, OP_Concat, regTemp, regSampleno, regSampleno);
+ sqlite3VdbeAddOp3(v, OP_Concat, regTemp, regStat1, regStat1);
}
sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 3, regRec, "aaa", 0);
- sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regRowid);
- sqlite3VdbeAddOp3(v, OP_Insert, iStatCur, regRec, regRowid);
+ sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regNewRowid);
+ sqlite3VdbeAddOp3(v, OP_Insert, iStatCur, regRec, regNewRowid);
sqlite3VdbeChangeP5(v, OPFLAG_APPEND);
}
@@ -73707,24 +79823,23 @@
if( pTab->pIndex==0 ){
sqlite3VdbeAddOp3(v, OP_OpenRead, iIdxCur, pTab->tnum, iDb);
VdbeComment((v, "%s", pTab->zName));
- sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regSampleno);
+ sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regStat1);
sqlite3VdbeAddOp1(v, OP_Close, iIdxCur);
+ jZeroRows = sqlite3VdbeAddOp1(v, OP_IfNot, regStat1);
}else{
- assert( jZeroRows>0 );
- addr = sqlite3VdbeAddOp0(v, OP_Goto);
sqlite3VdbeJumpHere(v, jZeroRows);
+ jZeroRows = sqlite3VdbeAddOp0(v, OP_Goto);
}
sqlite3VdbeAddOp2(v, OP_Null, 0, regIdxname);
sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 3, regRec, "aaa", 0);
- sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regRowid);
- sqlite3VdbeAddOp3(v, OP_Insert, iStatCur, regRec, regRowid);
+ sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regNewRowid);
+ sqlite3VdbeAddOp3(v, OP_Insert, iStatCur, regRec, regNewRowid);
sqlite3VdbeChangeP5(v, OPFLAG_APPEND);
if( pParse->nMem<regRec ) pParse->nMem = regRec;
- if( jZeroRows ){
- sqlite3VdbeJumpHere(v, addr);
- }
+ sqlite3VdbeJumpHere(v, jZeroRows);
}
+
/*
** Generate code that will cause the most recent index analysis to
** be loaded into internal hash tables where is can be used.
@@ -73748,21 +79863,23 @@
sqlite3BeginWriteOperation(pParse, 0, iDb);
iStatCur = pParse->nTab;
- pParse->nTab += 2;
- openStatTable(pParse, iDb, iStatCur, 0);
+ pParse->nTab += 3;
+ openStatTable(pParse, iDb, iStatCur, 0, 0);
iMem = pParse->nMem+1;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
for(k=sqliteHashFirst(&pSchema->tblHash); k; k=sqliteHashNext(k)){
Table *pTab = (Table*)sqliteHashData(k);
- analyzeOneTable(pParse, pTab, iStatCur, iMem);
+ analyzeOneTable(pParse, pTab, 0, iStatCur, iMem);
}
loadAnalysis(pParse, iDb);
}
/*
** Generate code that will do an analysis of a single table in
-** a database.
+** a database. If pOnlyIdx is not NULL then it is a single index
+** in pTab that should be analyzed.
*/
-static void analyzeTable(Parse *pParse, Table *pTab){
+static void analyzeTable(Parse *pParse, Table *pTab, Index *pOnlyIdx){
int iDb;
int iStatCur;
@@ -73771,9 +79888,13 @@
iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema);
sqlite3BeginWriteOperation(pParse, 0, iDb);
iStatCur = pParse->nTab;
- pParse->nTab += 2;
- openStatTable(pParse, iDb, iStatCur, pTab->zName);
- analyzeOneTable(pParse, pTab, iStatCur, pParse->nMem+1);
+ pParse->nTab += 3;
+ if( pOnlyIdx ){
+ openStatTable(pParse, iDb, iStatCur, pOnlyIdx->zName, "idx");
+ }else{
+ openStatTable(pParse, iDb, iStatCur, pTab->zName, "tbl");
+ }
+ analyzeOneTable(pParse, pTab, pOnlyIdx, iStatCur, pParse->nMem+1);
loadAnalysis(pParse, iDb);
}
@@ -73795,6 +79916,7 @@
int i;
char *z, *zDb;
Table *pTab;
+ Index *pIdx;
Token *pTableName;
/* Read the database schema. If an error occurs, leave an error message
@@ -73819,11 +79941,12 @@
}else{
z = sqlite3NameFromToken(db, pName1);
if( z ){
- pTab = sqlite3LocateTable(pParse, 0, z, 0);
- sqlite3DbFree(db, z);
- if( pTab ){
- analyzeTable(pParse, pTab);
+ if( (pIdx = sqlite3FindIndex(db, z, 0))!=0 ){
+ analyzeTable(pParse, pIdx->pTable, pIdx);
+ }else if( (pTab = sqlite3LocateTable(pParse, 0, z, 0))!=0 ){
+ analyzeTable(pParse, pTab, 0);
}
+ sqlite3DbFree(db, z);
}
}
}else{
@@ -73833,11 +79956,12 @@
zDb = db->aDb[iDb].zName;
z = sqlite3NameFromToken(db, pTableName);
if( z ){
- pTab = sqlite3LocateTable(pParse, 0, z, zDb);
- sqlite3DbFree(db, z);
- if( pTab ){
- analyzeTable(pParse, pTab);
+ if( (pIdx = sqlite3FindIndex(db, z, zDb))!=0 ){
+ analyzeTable(pParse, pIdx->pTable, pIdx);
+ }else if( (pTab = sqlite3LocateTable(pParse, 0, z, zDb))!=0 ){
+ analyzeTable(pParse, pTab, 0);
}
+ sqlite3DbFree(db, z);
}
}
}
@@ -73869,7 +79993,7 @@
Index *pIndex;
Table *pTable;
int i, c, n;
- unsigned int v;
+ tRowcnt v;
const char *z;
assert( argc==3 );
@@ -73899,6 +80023,10 @@
if( pIndex==0 ) break;
pIndex->aiRowEst[i] = v;
if( *z==' ' ) z++;
+ if( memcmp(z, "unordered", 10)==0 ){
+ pIndex->bUnordered = 1;
+ break;
+ }
}
return 0;
}
@@ -73908,10 +80036,10 @@
** and its contents.
*/
SQLITE_PRIVATE void sqlite3DeleteIndexSamples(sqlite3 *db, Index *pIdx){
-#ifdef SQLITE_ENABLE_STAT2
+#ifdef SQLITE_ENABLE_STAT3
if( pIdx->aSample ){
int j;
- for(j=0; j<SQLITE_INDEX_SAMPLES; j++){
+ for(j=0; j<pIdx->nSample; j++){
IndexSample *p = &pIdx->aSample[j];
if( p->eType==SQLITE_TEXT || p->eType==SQLITE_BLOB ){
sqlite3DbFree(db, p->u.z);
@@ -73919,25 +80047,157 @@
}
sqlite3DbFree(db, pIdx->aSample);
}
+ if( db && db->pnBytesFreed==0 ){
+ pIdx->nSample = 0;
+ pIdx->aSample = 0;
+ }
#else
UNUSED_PARAMETER(db);
UNUSED_PARAMETER(pIdx);
#endif
}
+#ifdef SQLITE_ENABLE_STAT3
/*
-** Load the content of the sqlite_stat1 and sqlite_stat2 tables. The
+** Load content from the sqlite_stat3 table into the Index.aSample[]
+** arrays of all indices.
+*/
+static int loadStat3(sqlite3 *db, const char *zDb){
+ int rc; /* Result codes from subroutines */
+ sqlite3_stmt *pStmt = 0; /* An SQL statement being run */
+ char *zSql; /* Text of the SQL statement */
+ Index *pPrevIdx = 0; /* Previous index in the loop */
+ int idx = 0; /* slot in pIdx->aSample[] for next sample */
+ int eType; /* Datatype of a sample */
+ IndexSample *pSample; /* A slot in pIdx->aSample[] */
+
+ if( !sqlite3FindTable(db, "sqlite_stat3", zDb) ){
+ return SQLITE_OK;
+ }
+
+ zSql = sqlite3MPrintf(db,
+ "SELECT idx,count(*) FROM %Q.sqlite_stat3"
+ " GROUP BY idx", zDb);
+ if( !zSql ){
+ return SQLITE_NOMEM;
+ }
+ rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0);
+ sqlite3DbFree(db, zSql);
+ if( rc ) return rc;
+
+ while( sqlite3_step(pStmt)==SQLITE_ROW ){
+ char *zIndex; /* Index name */
+ Index *pIdx; /* Pointer to the index object */
+ int nSample; /* Number of samples */
+
+ zIndex = (char *)sqlite3_column_text(pStmt, 0);
+ if( zIndex==0 ) continue;
+ nSample = sqlite3_column_int(pStmt, 1);
+ pIdx = sqlite3FindIndex(db, zIndex, zDb);
+ if( pIdx==0 ) continue;
+ assert( pIdx->nSample==0 );
+ pIdx->nSample = nSample;
+ pIdx->aSample = sqlite3MallocZero( nSample*sizeof(IndexSample) );
+ pIdx->avgEq = pIdx->aiRowEst[1];
+ if( pIdx->aSample==0 ){
+ db->mallocFailed = 1;
+ sqlite3_finalize(pStmt);
+ return SQLITE_NOMEM;
+ }
+ }
+ rc = sqlite3_finalize(pStmt);
+ if( rc ) return rc;
+
+ zSql = sqlite3MPrintf(db,
+ "SELECT idx,neq,nlt,ndlt,sample FROM %Q.sqlite_stat3", zDb);
+ if( !zSql ){
+ return SQLITE_NOMEM;
+ }
+ rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0);
+ sqlite3DbFree(db, zSql);
+ if( rc ) return rc;
+
+ while( sqlite3_step(pStmt)==SQLITE_ROW ){
+ char *zIndex; /* Index name */
+ Index *pIdx; /* Pointer to the index object */
+ int i; /* Loop counter */
+ tRowcnt sumEq; /* Sum of the nEq values */
+
+ zIndex = (char *)sqlite3_column_text(pStmt, 0);
+ if( zIndex==0 ) continue;
+ pIdx = sqlite3FindIndex(db, zIndex, zDb);
+ if( pIdx==0 ) continue;
+ if( pIdx==pPrevIdx ){
+ idx++;
+ }else{
+ pPrevIdx = pIdx;
+ idx = 0;
+ }
+ assert( idx<pIdx->nSample );
+ pSample = &pIdx->aSample[idx];
+ pSample->nEq = (tRowcnt)sqlite3_column_int64(pStmt, 1);
+ pSample->nLt = (tRowcnt)sqlite3_column_int64(pStmt, 2);
+ pSample->nDLt = (tRowcnt)sqlite3_column_int64(pStmt, 3);
+ if( idx==pIdx->nSample-1 ){
+ if( pSample->nDLt>0 ){
+ for(i=0, sumEq=0; i<=idx-1; i++) sumEq += pIdx->aSample[i].nEq;
+ pIdx->avgEq = (pSample->nLt - sumEq)/pSample->nDLt;
+ }
+ if( pIdx->avgEq<=0 ) pIdx->avgEq = 1;
+ }
+ eType = sqlite3_column_type(pStmt, 4);
+ pSample->eType = (u8)eType;
+ switch( eType ){
+ case SQLITE_INTEGER: {
+ pSample->u.i = sqlite3_column_int64(pStmt, 4);
+ break;
+ }
+ case SQLITE_FLOAT: {
+ pSample->u.r = sqlite3_column_double(pStmt, 4);
+ break;
+ }
+ case SQLITE_NULL: {
+ break;
+ }
+ default: assert( eType==SQLITE_TEXT || eType==SQLITE_BLOB ); {
+ const char *z = (const char *)(
+ (eType==SQLITE_BLOB) ?
+ sqlite3_column_blob(pStmt, 4):
+ sqlite3_column_text(pStmt, 4)
+ );
+ int n = z ? sqlite3_column_bytes(pStmt, 4) : 0;
+ pSample->nByte = n;
+ if( n < 1){
+ pSample->u.z = 0;
+ }else{
+ pSample->u.z = sqlite3Malloc(n);
+ if( pSample->u.z==0 ){
+ db->mallocFailed = 1;
+ sqlite3_finalize(pStmt);
+ return SQLITE_NOMEM;
+ }
+ memcpy(pSample->u.z, z, n);
+ }
+ }
+ }
+ }
+ return sqlite3_finalize(pStmt);
+}
+#endif /* SQLITE_ENABLE_STAT3 */
+
+/*
+** Load the content of the sqlite_stat1 and sqlite_stat3 tables. The
** contents of sqlite_stat1 are used to populate the Index.aiRowEst[]
-** arrays. The contents of sqlite_stat2 are used to populate the
+** arrays. The contents of sqlite_stat3 are used to populate the
** Index.aSample[] arrays.
**
** If the sqlite_stat1 table is not present in the database, SQLITE_ERROR
-** is returned. In this case, even if SQLITE_ENABLE_STAT2 was defined
-** during compilation and the sqlite_stat2 table is present, no data is
+** is returned. In this case, even if SQLITE_ENABLE_STAT3 was defined
+** during compilation and the sqlite_stat3 table is present, no data is
** read from it.
**
-** If SQLITE_ENABLE_STAT2 was defined during compilation and the
-** sqlite_stat2 table is not present in the database, SQLITE_ERROR is
+** If SQLITE_ENABLE_STAT3 was defined during compilation and the
+** sqlite_stat3 table is not present in the database, SQLITE_ERROR is
** returned. However, in this case, data is read from the sqlite_stat1
** table (if it is present) before returning.
**
@@ -73953,14 +80213,16 @@
assert( iDb>=0 && iDb<db->nDb );
assert( db->aDb[iDb].pBt!=0 );
- assert( sqlite3BtreeHoldsMutex(db->aDb[iDb].pBt) );
/* Clear any prior statistics */
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
for(i=sqliteHashFirst(&db->aDb[iDb].pSchema->idxHash);i;i=sqliteHashNext(i)){
Index *pIdx = sqliteHashData(i);
sqlite3DefaultRowEst(pIdx);
+#ifdef SQLITE_ENABLE_STAT3
sqlite3DeleteIndexSamples(db, pIdx);
pIdx->aSample = 0;
+#endif
}
/* Check to make sure the sqlite_stat1 table exists */
@@ -73972,7 +80234,7 @@
/* Load new statistics out of the sqlite_stat1 table */
zSql = sqlite3MPrintf(db,
- "SELECT tbl, idx, stat FROM %Q.sqlite_stat1", sInfo.zDatabase);
+ "SELECT tbl,idx,stat FROM %Q.sqlite_stat1", sInfo.zDatabase);
if( zSql==0 ){
rc = SQLITE_NOMEM;
}else{
@@ -73981,75 +80243,10 @@
}
- /* Load the statistics from the sqlite_stat2 table. */
-#ifdef SQLITE_ENABLE_STAT2
- if( rc==SQLITE_OK && !sqlite3FindTable(db, "sqlite_stat2", sInfo.zDatabase) ){
- rc = SQLITE_ERROR;
- }
+ /* Load the statistics from the sqlite_stat3 table. */
+#ifdef SQLITE_ENABLE_STAT3
if( rc==SQLITE_OK ){
- sqlite3_stmt *pStmt = 0;
-
- zSql = sqlite3MPrintf(db,
- "SELECT idx,sampleno,sample FROM %Q.sqlite_stat2", sInfo.zDatabase);
- if( !zSql ){
- rc = SQLITE_NOMEM;
- }else{
- rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0);
- sqlite3DbFree(db, zSql);
- }
-
- if( rc==SQLITE_OK ){
- while( sqlite3_step(pStmt)==SQLITE_ROW ){
- char *zIndex = (char *)sqlite3_column_text(pStmt, 0);
- Index *pIdx = sqlite3FindIndex(db, zIndex, sInfo.zDatabase);
- if( pIdx ){
- int iSample = sqlite3_column_int(pStmt, 1);
- if( iSample<SQLITE_INDEX_SAMPLES && iSample>=0 ){
- int eType = sqlite3_column_type(pStmt, 2);
-
- if( pIdx->aSample==0 ){
- static const int sz = sizeof(IndexSample)*SQLITE_INDEX_SAMPLES;
- pIdx->aSample = (IndexSample *)sqlite3DbMallocRaw(0, sz);
- if( pIdx->aSample==0 ){
- db->mallocFailed = 1;
- break;
- }
- memset(pIdx->aSample, 0, sz);
- }
-
- assert( pIdx->aSample );
- {
- IndexSample *pSample = &pIdx->aSample[iSample];
- pSample->eType = (u8)eType;
- if( eType==SQLITE_INTEGER || eType==SQLITE_FLOAT ){
- pSample->u.r = sqlite3_column_double(pStmt, 2);
- }else if( eType==SQLITE_TEXT || eType==SQLITE_BLOB ){
- const char *z = (const char *)(
- (eType==SQLITE_BLOB) ?
- sqlite3_column_blob(pStmt, 2):
- sqlite3_column_text(pStmt, 2)
- );
- int n = sqlite3_column_bytes(pStmt, 2);
- if( n>24 ){
- n = 24;
- }
- pSample->nByte = (u8)n;
- if( n < 1){
- pSample->u.z = 0;
- }else{
- pSample->u.z = sqlite3DbStrNDup(0, z, n);
- if( pSample->u.z==0 ){
- db->mallocFailed = 1;
- break;
- }
- }
- }
- }
- }
- }
- }
- rc = sqlite3_finalize(pStmt);
- }
+ rc = loadStat3(db, sInfo.zDatabase);
}
#endif
@@ -74135,8 +80332,12 @@
sqlite3 *db = sqlite3_context_db_handle(context);
const char *zName;
const char *zFile;
+ char *zPath = 0;
+ char *zErr = 0;
+ unsigned int flags;
Db *aNew;
char *zErrDyn = 0;
+ sqlite3_vfs *pVfs;
UNUSED_PARAMETER(NotUsed);
@@ -74189,8 +80390,18 @@
** it to obtain the database schema. At this point the schema may
** or may not be initialised.
*/
- rc = sqlite3BtreeOpen(zFile, db, &aNew->pBt, 0,
- db->openFlags | SQLITE_OPEN_MAIN_DB);
+ flags = db->openFlags;
+ rc = sqlite3ParseUri(db->pVfs->zName, zFile, &flags, &pVfs, &zPath, &zErr);
+ if( rc!=SQLITE_OK ){
+ if( rc==SQLITE_NOMEM ) db->mallocFailed = 1;
+ sqlite3_result_error(context, zErr, -1);
+ sqlite3_free(zErr);
+ return;
+ }
+ assert( pVfs );
+ flags |= SQLITE_OPEN_MAIN_DB;
+ rc = sqlite3BtreeOpen(pVfs, zPath, db, &aNew->pBt, 0, flags);
+ sqlite3_free( zPath );
db->nDb++;
if( rc==SQLITE_CONSTRAINT ){
rc = SQLITE_ERROR;
@@ -74241,7 +80452,9 @@
case SQLITE_NULL:
/* No key specified. Use the key from the main database */
sqlite3CodecGetKey(db, 0, (void**)&zKey, &nKey);
- rc = sqlite3CodecAttach(db, db->nDb-1, zKey, nKey);
+ if( nKey>0 || sqlite3BtreeGetReserve(db->aDb[0].pBt)>0 ){
+ rc = sqlite3CodecAttach(db, db->nDb-1, zKey, nKey);
+ }
break;
}
}
@@ -74265,7 +80478,7 @@
db->aDb[iDb].pBt = 0;
db->aDb[iDb].pSchema = 0;
}
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
db->nDb = iDb;
if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ){
db->mallocFailed = 1;
@@ -74337,7 +80550,7 @@
sqlite3BtreeClose(pDb->pBt);
pDb->pBt = 0;
pDb->pSchema = 0;
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
return;
detach_error:
@@ -74377,9 +80590,11 @@
#ifndef SQLITE_OMIT_AUTHORIZATION
if( pAuthArg ){
- char *zAuthArg = pAuthArg->u.zToken;
- if( NEVER(zAuthArg==0) ){
- goto attach_end;
+ char *zAuthArg;
+ if( pAuthArg->op==TK_STRING ){
+ zAuthArg = pAuthArg->u.zToken;
+ }else{
+ zAuthArg = 0;
}
rc = sqlite3AuthCheck(pParse, type, zAuthArg, 0, 0);
if(rc!=SQLITE_OK ){
@@ -75005,7 +81220,7 @@
** on each used database.
*/
if( pParse->cookieGoto>0 ){
- u32 mask;
+ yDbMask mask;
int iDb;
sqlite3VdbeJumpHere(v, pParse->cookieGoto-1);
for(iDb=0, mask=1; iDb<db->nDb; mask<<=1, iDb++){
@@ -75013,7 +81228,10 @@
sqlite3VdbeUsesBtree(v, iDb);
sqlite3VdbeAddOp2(v,OP_Transaction, iDb, (mask & pParse->writeMask)!=0);
if( db->init.busy==0 ){
- sqlite3VdbeAddOp2(v,OP_VerifyCookie, iDb, pParse->cookieValue[iDb]);
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
+ sqlite3VdbeAddOp3(v, OP_VerifyCookie,
+ iDb, pParse->cookieValue[iDb],
+ db->aDb[iDb].pSchema->iGeneration);
}
}
#ifndef SQLITE_OMIT_VIRTUALTABLE
@@ -75054,9 +81272,7 @@
/* A minimum of one cursor is required if autoincrement is used
* See ticket [a696379c1f08866] */
if( pParse->pAinc!=0 && pParse->nTab==0 ) pParse->nTab = 1;
- sqlite3VdbeMakeReady(v, pParse->nVar, pParse->nMem,
- pParse->nTab, pParse->nMaxArg, pParse->explain,
- pParse->isMultiWrite && pParse->mayAbort);
+ sqlite3VdbeMakeReady(v, pParse);
pParse->rc = SQLITE_DONE;
pParse->colNamesSet = 0;
}else{
@@ -75126,9 +81342,12 @@
int nName;
assert( zName!=0 );
nName = sqlite3Strlen30(zName);
+ /* All mutexes are required for schema access. Make sure we hold them. */
+ assert( zDatabase!=0 || sqlite3BtreeHoldsAllMutexes(db) );
for(i=OMIT_TEMPDB; i<db->nDb; i++){
int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */
if( zDatabase!=0 && sqlite3StrICmp(zDatabase, db->aDb[j].zName) ) continue;
+ assert( sqlite3SchemaMutexHeld(db, j, 0) );
p = sqlite3HashFind(&db->aDb[j].pSchema->tblHash, zName, nName);
if( p ) break;
}
@@ -75188,11 +81407,14 @@
Index *p = 0;
int i;
int nName = sqlite3Strlen30(zName);
+ /* All mutexes are required for schema access. Make sure we hold them. */
+ assert( zDb!=0 || sqlite3BtreeHoldsAllMutexes(db) );
for(i=OMIT_TEMPDB; i<db->nDb; i++){
int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */
Schema *pSchema = db->aDb[j].pSchema;
assert( pSchema );
if( zDb && sqlite3StrICmp(zDb, db->aDb[j].zName) ) continue;
+ assert( sqlite3SchemaMutexHeld(db, j, 0) );
p = sqlite3HashFind(&pSchema->idxHash, zName, nName);
if( p ) break;
}
@@ -75219,11 +81441,13 @@
SQLITE_PRIVATE void sqlite3UnlinkAndDeleteIndex(sqlite3 *db, int iDb, const char *zIdxName){
Index *pIndex;
int len;
- Hash *pHash = &db->aDb[iDb].pSchema->idxHash;
+ Hash *pHash;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
+ pHash = &db->aDb[iDb].pSchema->idxHash;
len = sqlite3Strlen30(zIdxName);
pIndex = sqlite3HashInsert(pHash, zIdxName, len, 0);
- if( pIndex ){
+ if( ALWAYS(pIndex) ){
if( pIndex->pTable->pIndex==pIndex ){
pIndex->pTable->pIndex = pIndex->pNext;
}else{
@@ -75248,26 +81472,42 @@
** if there were schema changes during the transaction or if a
** schema-cookie mismatch occurs.
**
-** If iDb==0 then reset the internal schema tables for all database
-** files. If iDb>=1 then reset the internal schema for only the
+** If iDb<0 then reset the internal schema tables for all database
+** files. If iDb>=0 then reset the internal schema for only the
** single file indicated.
*/
SQLITE_PRIVATE void sqlite3ResetInternalSchema(sqlite3 *db, int iDb){
int i, j;
- assert( iDb>=0 && iDb<db->nDb );
+ assert( iDb<db->nDb );
- if( iDb==0 ){
- sqlite3BtreeEnterAll(db);
+ if( iDb>=0 ){
+ /* Case 1: Reset the single schema identified by iDb */
+ Db *pDb = &db->aDb[iDb];
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
+ assert( pDb->pSchema!=0 );
+ sqlite3SchemaClear(pDb->pSchema);
+
+ /* If any database other than TEMP is reset, then also reset TEMP
+ ** since TEMP might be holding triggers that reference tables in the
+ ** other database.
+ */
+ if( iDb!=1 ){
+ pDb = &db->aDb[1];
+ assert( pDb->pSchema!=0 );
+ sqlite3SchemaClear(pDb->pSchema);
+ }
+ return;
}
- for(i=iDb; i<db->nDb; i++){
+ /* Case 2 (from here to the end): Reset all schemas for all attached
+ ** databases. */
+ assert( iDb<0 );
+ sqlite3BtreeEnterAll(db);
+ for(i=0; i<db->nDb; i++){
Db *pDb = &db->aDb[i];
if( pDb->pSchema ){
- assert(i==1 || (pDb->pBt && sqlite3BtreeHoldsMutex(pDb->pBt)));
- sqlite3SchemaFree(pDb->pSchema);
+ sqlite3SchemaClear(pDb->pSchema);
}
- if( iDb>0 ) return;
}
- assert( iDb==0 );
db->flags &= ~SQLITE_InternChanges;
sqlite3VtabUnlockList(db);
sqlite3BtreeLeaveAll(db);
@@ -75353,6 +81593,7 @@
TESTONLY ( Index *pOld = ) sqlite3HashInsert(
&pIndex->pSchema->idxHash, zName, sqlite3Strlen30(zName), 0
);
+ assert( db==0 || sqlite3SchemaMutexHeld(db, 0, pIndex->pSchema) );
assert( pOld==pIndex || pOld==0 );
}
freeIndex(db, pIndex);
@@ -75387,6 +81628,7 @@
assert( db!=0 );
assert( iDb>=0 && iDb<db->nDb );
assert( zTabName );
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
testcase( zTabName[0]==0 ); /* Zero-length table names are allowed */
pDb = &db->aDb[iDb];
p = sqlite3HashInsert(&pDb->pSchema->tblHash, zTabName,
@@ -75641,6 +81883,9 @@
if( pTable ){
if( !noErr ){
sqlite3ErrorMsg(pParse, "table %T already exists", pName);
+ }else{
+ assert( !db->init.busy );
+ sqlite3CodeVerifySchema(pParse, iDb);
}
goto begin_table_error;
}
@@ -75671,6 +81916,7 @@
*/
#ifndef SQLITE_OMIT_AUTOINCREMENT
if( !pParse->nested && strcmp(zName, "sqlite_sequence")==0 ){
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
pTable->pSchema->pSeqTab = pTable;
}
#endif
@@ -76131,6 +82377,7 @@
int r1 = sqlite3GetTempReg(pParse);
sqlite3 *db = pParse->db;
Vdbe *v = pParse->pVdbe;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
sqlite3VdbeAddOp2(v, OP_Integer, db->aDb[iDb].pSchema->schema_cookie+1, r1);
sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_SCHEMA_VERSION, r1);
sqlite3ReleaseTempReg(pParse, r1);
@@ -76238,7 +82485,7 @@
zSep = zSep2;
identPut(zStmt, &k, pCol->zName);
assert( pCol->affinity-SQLITE_AFF_TEXT >= 0 );
- assert( pCol->affinity-SQLITE_AFF_TEXT < sizeof(azType)/sizeof(azType[0]) );
+ assert( pCol->affinity-SQLITE_AFF_TEXT < ArraySize(azType) );
testcase( pCol->affinity==SQLITE_AFF_TEXT );
testcase( pCol->affinity==SQLITE_AFF_NONE );
testcase( pCol->affinity==SQLITE_AFF_NUMERIC );
@@ -76433,6 +82680,7 @@
*/
if( p->tabFlags & TF_Autoincrement ){
Db *pDb = &db->aDb[iDb];
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
if( pDb->pSchema->pSeqTab==0 ){
sqlite3NestedParse(pParse,
"CREATE TABLE %Q.sqlite_sequence(name,seq)",
@@ -76443,8 +82691,8 @@
#endif
/* Reparse everything to update our internal data structures */
- sqlite3VdbeAddOp4(v, OP_ParseSchema, iDb, 0, 0,
- sqlite3MPrintf(db, "tbl_name='%q'",p->zName), P4_DYNAMIC);
+ sqlite3VdbeAddParseSchemaOp(v, iDb,
+ sqlite3MPrintf(db, "tbl_name='%q'", p->zName));
}
@@ -76453,6 +82701,7 @@
if( db->init.busy ){
Table *pOld;
Schema *pSchema = p->pSchema;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
pOld = sqlite3HashInsert(&pSchema->tblHash, p->zName,
sqlite3Strlen30(p->zName),p);
if( pOld ){
@@ -76497,7 +82746,7 @@
const char *z;
Token sEnd;
DbFixer sFix;
- Token *pName;
+ Token *pName = 0;
int iDb;
sqlite3 *db = pParse->db;
@@ -76637,6 +82886,7 @@
pSelTab->nCol = 0;
pSelTab->aCol = 0;
sqlite3DeleteTable(db, pSelTab);
+ assert( sqlite3SchemaMutexHeld(db, 0, pTable->pSchema) );
pTable->pSchema->flags |= DB_UnresetViews;
}else{
pTable->nCol = 0;
@@ -76657,6 +82907,7 @@
*/
static void sqliteViewResetAll(sqlite3 *db, int idx){
HashElem *i;
+ assert( sqlite3SchemaMutexHeld(db, idx, 0) );
if( !DbHasProperty(db, idx, DB_UnresetViews) ) return;
for(i=sqliteHashFirst(&db->aDb[idx].pSchema->tblHash); i;i=sqliteHashNext(i)){
Table *pTab = sqliteHashData(i);
@@ -76690,10 +82941,13 @@
** in order to be certain that we got the right one.
*/
#ifndef SQLITE_OMIT_AUTOVACUUM
-SQLITE_PRIVATE void sqlite3RootPageMoved(Db *pDb, int iFrom, int iTo){
+SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3 *db, int iDb, int iFrom, int iTo){
HashElem *pElem;
Hash *pHash;
+ Db *pDb;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
+ pDb = &db->aDb[iDb];
pHash = &pDb->pSchema->tblHash;
for(pElem=sqliteHashFirst(pHash); pElem; pElem=sqliteHashNext(pElem)){
Table *pTab = sqliteHashData(pElem);
@@ -76799,6 +83053,100 @@
}
/*
+** Remove entries from the sqlite_statN tables (for N in (1,2,3))
+** after a DROP INDEX or DROP TABLE command.
+*/
+static void sqlite3ClearStatTables(
+ Parse *pParse, /* The parsing context */
+ int iDb, /* The database number */
+ const char *zType, /* "idx" or "tbl" */
+ const char *zName /* Name of index or table */
+){
+ int i;
+ const char *zDbName = pParse->db->aDb[iDb].zName;
+ for(i=1; i<=3; i++){
+ char zTab[24];
+ sqlite3_snprintf(sizeof(zTab),zTab,"sqlite_stat%d",i);
+ if( sqlite3FindTable(pParse->db, zTab, zDbName) ){
+ sqlite3NestedParse(pParse,
+ "DELETE FROM %Q.%s WHERE %s=%Q",
+ zDbName, zTab, zType, zName
+ );
+ }
+ }
+}
+
+/*
+** Generate code to drop a table.
+*/
+SQLITE_PRIVATE void sqlite3CodeDropTable(Parse *pParse, Table *pTab, int iDb, int isView){
+ Vdbe *v;
+ sqlite3 *db = pParse->db;
+ Trigger *pTrigger;
+ Db *pDb = &db->aDb[iDb];
+
+ v = sqlite3GetVdbe(pParse);
+ assert( v!=0 );
+ sqlite3BeginWriteOperation(pParse, 1, iDb);
+
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+ if( IsVirtual(pTab) ){
+ sqlite3VdbeAddOp0(v, OP_VBegin);
+ }
+#endif
+
+ /* Drop all triggers associated with the table being dropped. Code
+ ** is generated to remove entries from sqlite_master and/or
+ ** sqlite_temp_master if required.
+ */
+ pTrigger = sqlite3TriggerList(pParse, pTab);
+ while( pTrigger ){
+ assert( pTrigger->pSchema==pTab->pSchema ||
+ pTrigger->pSchema==db->aDb[1].pSchema );
+ sqlite3DropTriggerPtr(pParse, pTrigger);
+ pTrigger = pTrigger->pNext;
+ }
+
+#ifndef SQLITE_OMIT_AUTOINCREMENT
+ /* Remove any entries of the sqlite_sequence table associated with
+ ** the table being dropped. This is done before the table is dropped
+ ** at the btree level, in case the sqlite_sequence table needs to
+ ** move as a result of the drop (can happen in auto-vacuum mode).
+ */
+ if( pTab->tabFlags & TF_Autoincrement ){
+ sqlite3NestedParse(pParse,
+ "DELETE FROM %Q.sqlite_sequence WHERE name=%Q",
+ pDb->zName, pTab->zName
+ );
+ }
+#endif
+
+ /* Drop all SQLITE_MASTER table and index entries that refer to the
+ ** table. The program name loops through the master table and deletes
+ ** every row that refers to a table of the same name as the one being
+ ** dropped. Triggers are handled seperately because a trigger can be
+ ** created in the temp database that refers to a table in another
+ ** database.
+ */
+ sqlite3NestedParse(pParse,
+ "DELETE FROM %Q.%s WHERE tbl_name=%Q and type!='trigger'",
+ pDb->zName, SCHEMA_TABLE(iDb), pTab->zName);
+ if( !isView && !IsVirtual(pTab) ){
+ destroyTable(pParse, pTab);
+ }
+
+ /* Remove the table entry from SQLite's internal schema and modify
+ ** the schema cookie.
+ */
+ if( IsVirtual(pTab) ){
+ sqlite3VdbeAddOp4(v, OP_VDestroy, iDb, 0, 0, pTab->zName, 0);
+ }
+ sqlite3VdbeAddOp4(v, OP_DropTable, iDb, 0, 0, pTab->zName, 0);
+ sqlite3ChangeCookie(pParse, iDb);
+ sqliteViewResetAll(db, iDb);
+}
+
+/*
** This routine is called to do the work of a DROP TABLE statement.
** pName is the name of the table to be dropped.
*/
@@ -76819,6 +83167,7 @@
if( noErr ) db->suppressErr--;
if( pTab==0 ){
+ if( noErr ) sqlite3CodeVerifyNamedSchema(pParse, pName->a[0].zDatabase);
goto exit_drop_table;
}
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
@@ -76865,7 +83214,8 @@
}
}
#endif
- if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 ){
+ if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0
+ && sqlite3StrNICmp(pTab->zName, "sqlite_stat", 11)!=0 ){
sqlite3ErrorMsg(pParse, "table %s may not be dropped", pTab->zName);
goto exit_drop_table;
}
@@ -76889,75 +83239,11 @@
*/
v = sqlite3GetVdbe(pParse);
if( v ){
- Trigger *pTrigger;
- Db *pDb = &db->aDb[iDb];
sqlite3BeginWriteOperation(pParse, 1, iDb);
-
-#ifndef SQLITE_OMIT_VIRTUALTABLE
- if( IsVirtual(pTab) ){
- sqlite3VdbeAddOp0(v, OP_VBegin);
- }
-#endif
+ sqlite3ClearStatTables(pParse, iDb, "tbl", pTab->zName);
sqlite3FkDropTable(pParse, pName, pTab);
-
- /* Drop all triggers associated with the table being dropped. Code
- ** is generated to remove entries from sqlite_master and/or
- ** sqlite_temp_master if required.
- */
- pTrigger = sqlite3TriggerList(pParse, pTab);
- while( pTrigger ){
- assert( pTrigger->pSchema==pTab->pSchema ||
- pTrigger->pSchema==db->aDb[1].pSchema );
- sqlite3DropTriggerPtr(pParse, pTrigger);
- pTrigger = pTrigger->pNext;
- }
-
-#ifndef SQLITE_OMIT_AUTOINCREMENT
- /* Remove any entries of the sqlite_sequence table associated with
- ** the table being dropped. This is done before the table is dropped
- ** at the btree level, in case the sqlite_sequence table needs to
- ** move as a result of the drop (can happen in auto-vacuum mode).
- */
- if( pTab->tabFlags & TF_Autoincrement ){
- sqlite3NestedParse(pParse,
- "DELETE FROM %s.sqlite_sequence WHERE name=%Q",
- pDb->zName, pTab->zName
- );
- }
-#endif
-
- /* Drop all SQLITE_MASTER table and index entries that refer to the
- ** table. The program name loops through the master table and deletes
- ** every row that refers to a table of the same name as the one being
- ** dropped. Triggers are handled seperately because a trigger can be
- ** created in the temp database that refers to a table in another
- ** database.
- */
- sqlite3NestedParse(pParse,
- "DELETE FROM %Q.%s WHERE tbl_name=%Q and type!='trigger'",
- pDb->zName, SCHEMA_TABLE(iDb), pTab->zName);
-
- /* Drop any statistics from the sqlite_stat1 table, if it exists */
- if( sqlite3FindTable(db, "sqlite_stat1", db->aDb[iDb].zName) ){
- sqlite3NestedParse(pParse,
- "DELETE FROM %Q.sqlite_stat1 WHERE tbl=%Q", pDb->zName, pTab->zName
- );
- }
-
- if( !isView && !IsVirtual(pTab) ){
- destroyTable(pParse, pTab);
- }
-
- /* Remove the table entry from SQLite's internal schema and modify
- ** the schema cookie.
- */
- if( IsVirtual(pTab) ){
- sqlite3VdbeAddOp4(v, OP_VDestroy, iDb, 0, 0, pTab->zName, 0);
- }
- sqlite3VdbeAddOp4(v, OP_DropTable, iDb, 0, 0, pTab->zName, 0);
- sqlite3ChangeCookie(pParse, iDb);
+ sqlite3CodeDropTable(pParse, pTab, iDb, isView);
}
- sqliteViewResetAll(db, iDb);
exit_drop_table:
sqlite3SrcListDelete(db, pName);
@@ -77067,6 +83353,7 @@
pFKey->aAction[0] = (u8)(flags & 0xff); /* ON DELETE action */
pFKey->aAction[1] = (u8)((flags >> 8 ) & 0xff); /* ON UPDATE action */
+ assert( sqlite3SchemaMutexHeld(db, 0, p->pSchema) );
pNextTo = (FKey *)sqlite3HashInsert(&p->pSchema->fkeyHash,
pFKey->zTo, sqlite3Strlen30(pFKey->zTo), (void *)pFKey
);
@@ -77124,11 +83411,15 @@
Table *pTab = pIndex->pTable; /* The table that is indexed */
int iTab = pParse->nTab++; /* Btree cursor used for pTab */
int iIdx = pParse->nTab++; /* Btree cursor used for pIndex */
+ int iSorter; /* Cursor opened by OpenSorter (if in use) */
int addr1; /* Address of top of loop */
+ int addr2; /* Address to jump to for next iteration */
int tnum; /* Root page of index */
Vdbe *v; /* Generate code into this virtual machine */
KeyInfo *pKey; /* KeyInfo for index */
+#ifdef SQLITE_OMIT_MERGE_SORT
int regIdxKey; /* Registers containing the index key */
+#endif
int regRecord; /* Register holding assemblied index record */
sqlite3 *db = pParse->db; /* The database connection */
int iDb = sqlite3SchemaToIndex(db, pIndex->pSchema);
@@ -77157,10 +83448,44 @@
if( memRootPage>=0 ){
sqlite3VdbeChangeP5(v, 1);
}
+
+#ifndef SQLITE_OMIT_MERGE_SORT
+ /* Open the sorter cursor if we are to use one. */
+ iSorter = pParse->nTab++;
+ sqlite3VdbeAddOp4(v, OP_SorterOpen, iSorter, 0, 0, (char*)pKey, P4_KEYINFO);
+#else
+ iSorter = iTab;
+#endif
+
+ /* Open the table. Loop through all rows of the table, inserting index
+ ** records into the sorter. */
sqlite3OpenTable(pParse, iTab, iDb, pTab, OP_OpenRead);
addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iTab, 0);
regRecord = sqlite3GetTempReg(pParse);
+
+#ifndef SQLITE_OMIT_MERGE_SORT
+ sqlite3GenerateIndexKey(pParse, pIndex, iTab, regRecord, 1);
+ sqlite3VdbeAddOp2(v, OP_SorterInsert, iSorter, regRecord);
+ sqlite3VdbeAddOp2(v, OP_Next, iTab, addr1+1);
+ sqlite3VdbeJumpHere(v, addr1);
+ addr1 = sqlite3VdbeAddOp2(v, OP_SorterSort, iSorter, 0);
+ if( pIndex->onError!=OE_None ){
+ int j2 = sqlite3VdbeCurrentAddr(v) + 3;
+ sqlite3VdbeAddOp2(v, OP_Goto, 0, j2);
+ addr2 = sqlite3VdbeCurrentAddr(v);
+ sqlite3VdbeAddOp3(v, OP_SorterCompare, iSorter, j2, regRecord);
+ sqlite3HaltConstraint(
+ pParse, OE_Abort, "indexed columns are not unique", P4_STATIC
+ );
+ }else{
+ addr2 = sqlite3VdbeCurrentAddr(v);
+ }
+ sqlite3VdbeAddOp2(v, OP_SorterData, iSorter, regRecord);
+ sqlite3VdbeAddOp3(v, OP_IdxInsert, iIdx, regRecord, 1);
+ sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT);
+#else
regIdxKey = sqlite3GenerateIndexKey(pParse, pIndex, iTab, regRecord, 1);
+ addr2 = addr1 + 1;
if( pIndex->onError!=OE_None ){
const int regRowid = regIdxKey + pIndex->nColumn;
const int j2 = sqlite3VdbeCurrentAddr(v) + 2;
@@ -77179,13 +83504,16 @@
sqlite3HaltConstraint(
pParse, OE_Abort, "indexed columns are not unique", P4_STATIC);
}
- sqlite3VdbeAddOp2(v, OP_IdxInsert, iIdx, regRecord);
+ sqlite3VdbeAddOp3(v, OP_IdxInsert, iIdx, regRecord, 0);
sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT);
+#endif
sqlite3ReleaseTempReg(pParse, regRecord);
- sqlite3VdbeAddOp2(v, OP_Next, iTab, addr1+1);
+ sqlite3VdbeAddOp2(v, OP_SorterNext, iSorter, addr2);
sqlite3VdbeJumpHere(v, addr1);
+
sqlite3VdbeAddOp1(v, OP_Close, iTab);
sqlite3VdbeAddOp1(v, OP_Close, iIdx);
+ sqlite3VdbeAddOp1(v, OP_Close, iSorter);
}
/*
@@ -77255,6 +83583,7 @@
assert( pName1 && pName2 );
iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pName);
if( iDb<0 ) goto exit_create_index;
+ assert( pName && pName->z );
#ifndef SQLITE_OMIT_TEMPDB
/* If the index name was unqualified, check if the the table
@@ -77282,6 +83611,7 @@
assert( db->aDb[iDb].pSchema==pTab->pSchema );
}else{
assert( pName==0 );
+ assert( pStart==0 );
pTab = pParse->pNewTable;
if( !pTab ) goto exit_create_index;
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
@@ -77324,6 +83654,7 @@
if( pName ){
zName = sqlite3NameFromToken(db, pName);
if( zName==0 ) goto exit_create_index;
+ assert( pName->z!=0 );
if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){
goto exit_create_index;
}
@@ -77336,6 +83667,9 @@
if( sqlite3FindIndex(db, zName, pDb->zName)!=0 ){
if( !ifNotExist ){
sqlite3ErrorMsg(pParse, "index %s already exists", zName);
+ }else{
+ assert( !db->init.busy );
+ sqlite3CodeVerifySchema(pParse, iDb);
}
goto exit_create_index;
}
@@ -77399,21 +83733,25 @@
nName = sqlite3Strlen30(zName);
nCol = pList->nExpr;
pIndex = sqlite3DbMallocZero(db,
- sizeof(Index) + /* Index structure */
- sizeof(int)*nCol + /* Index.aiColumn */
- sizeof(int)*(nCol+1) + /* Index.aiRowEst */
- sizeof(char *)*nCol + /* Index.azColl */
- sizeof(u8)*nCol + /* Index.aSortOrder */
- nName + 1 + /* Index.zName */
- nExtra /* Collation sequence names */
+ ROUND8(sizeof(Index)) + /* Index structure */
+ ROUND8(sizeof(tRowcnt)*(nCol+1)) + /* Index.aiRowEst */
+ sizeof(char *)*nCol + /* Index.azColl */
+ sizeof(int)*nCol + /* Index.aiColumn */
+ sizeof(u8)*nCol + /* Index.aSortOrder */
+ nName + 1 + /* Index.zName */
+ nExtra /* Collation sequence names */
);
if( db->mallocFailed ){
goto exit_create_index;
}
- pIndex->azColl = (char**)(&pIndex[1]);
+ zExtra = (char*)pIndex;
+ pIndex->aiRowEst = (tRowcnt*)&zExtra[ROUND8(sizeof(Index))];
+ pIndex->azColl = (char**)
+ ((char*)pIndex->aiRowEst + ROUND8(sizeof(tRowcnt)*nCol+1));
+ assert( EIGHT_BYTE_ALIGNMENT(pIndex->aiRowEst) );
+ assert( EIGHT_BYTE_ALIGNMENT(pIndex->azColl) );
pIndex->aiColumn = (int *)(&pIndex->azColl[nCol]);
- pIndex->aiRowEst = (unsigned *)(&pIndex->aiColumn[nCol]);
- pIndex->aSortOrder = (u8 *)(&pIndex->aiRowEst[nCol+1]);
+ pIndex->aSortOrder = (u8 *)(&pIndex->aiColumn[nCol]);
pIndex->zName = (char *)(&pIndex->aSortOrder[nCol]);
zExtra = (char *)(&pIndex->zName[nName+1]);
memcpy(pIndex->zName, zName, nName+1);
@@ -77422,6 +83760,7 @@
pIndex->onError = (u8)onError;
pIndex->autoIndex = (u8)(pName==0);
pIndex->pSchema = db->aDb[iDb].pSchema;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
/* Check to see if we should honor DESC requests on index columns
*/
@@ -77551,6 +83890,7 @@
*/
if( db->init.busy ){
Index *p;
+ assert( sqlite3SchemaMutexHeld(db, 0, pIndex->pSchema) );
p = sqlite3HashInsert(&pIndex->pSchema->idxHash,
pIndex->zName, sqlite3Strlen30(pIndex->zName),
pIndex);
@@ -77602,7 +83942,7 @@
/* A named index with an explicit CREATE INDEX statement */
zStmt = sqlite3MPrintf(db, "CREATE%s INDEX %.*s",
onError==OE_None ? "" : " UNIQUE",
- pEnd->z - pName->z + 1,
+ (int)(pEnd->z - pName->z) + 1,
pName->z);
}else{
/* An automatic index created by a PRIMARY KEY or UNIQUE constraint */
@@ -77628,9 +83968,8 @@
if( pTblName ){
sqlite3RefillIndex(pParse, pIndex, iMem);
sqlite3ChangeCookie(pParse, iDb);
- sqlite3VdbeAddOp4(v, OP_ParseSchema, iDb, 0, 0,
- sqlite3MPrintf(db, "name='%q' AND type='index'", pIndex->zName),
- P4_DYNAMIC);
+ sqlite3VdbeAddParseSchemaOp(v, iDb,
+ sqlite3MPrintf(db, "name='%q' AND type='index'", pIndex->zName));
sqlite3VdbeAddOp1(v, OP_Expire, 0);
}
}
@@ -77689,9 +84028,9 @@
** are based on typical values found in actual indices.
*/
SQLITE_PRIVATE void sqlite3DefaultRowEst(Index *pIdx){
- unsigned *a = pIdx->aiRowEst;
+ tRowcnt *a = pIdx->aiRowEst;
int i;
- unsigned n;
+ tRowcnt n;
assert( a!=0 );
a[0] = pIdx->pTable->nRowEst;
if( a[0]<10 ) a[0] = 10;
@@ -77727,6 +84066,8 @@
if( pIndex==0 ){
if( !ifExists ){
sqlite3ErrorMsg(pParse, "no such index: %S", pName, 0);
+ }else{
+ sqlite3CodeVerifyNamedSchema(pParse, pName->a[0].zDatabase);
}
pParse->checkSchema = 1;
goto exit_drop_index;
@@ -77759,15 +84100,9 @@
sqlite3BeginWriteOperation(pParse, 1, iDb);
sqlite3NestedParse(pParse,
"DELETE FROM %Q.%s WHERE name=%Q AND type='index'",
- db->aDb[iDb].zName, SCHEMA_TABLE(iDb),
- pIndex->zName
+ db->aDb[iDb].zName, SCHEMA_TABLE(iDb), pIndex->zName
);
- if( sqlite3FindTable(db, "sqlite_stat1", db->aDb[iDb].zName) ){
- sqlite3NestedParse(pParse,
- "DELETE FROM %Q.sqlite_stat1 WHERE idx=%Q",
- db->aDb[iDb].zName, pIndex->zName
- );
- }
+ sqlite3ClearStatTables(pParse, iDb, "idx", pIndex->zName);
sqlite3ChangeCookie(pParse, iDb);
destroyRootPage(pParse, pIndex->tnum, iDb);
sqlite3VdbeAddOp4(v, OP_DropIndex, iDb, 0, 0, pIndex->zName, 0);
@@ -78139,8 +84474,9 @@
** operator with A. This routine shifts that operator over to B.
*/
SQLITE_PRIVATE void sqlite3SrcListShiftJoinType(SrcList *p){
- if( p && p->a ){
+ if( p ){
int i;
+ assert( p->a || p->nSrc==0 );
for(i=p->nSrc-1; i>0; i--){
p->a[i].jointype = p->a[i-1].jointype;
}
@@ -78178,13 +84514,10 @@
** Commit a transaction
*/
SQLITE_PRIVATE void sqlite3CommitTransaction(Parse *pParse){
- sqlite3 *db;
Vdbe *v;
assert( pParse!=0 );
- db = pParse->db;
- assert( db!=0 );
-/* if( db->aDb[0].pBt==0 ) return; */
+ assert( pParse->db!=0 );
if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION, "COMMIT", 0, 0) ){
return;
}
@@ -78198,13 +84531,10 @@
** Rollback a transaction
*/
SQLITE_PRIVATE void sqlite3RollbackTransaction(Parse *pParse){
- sqlite3 *db;
Vdbe *v;
assert( pParse!=0 );
- db = pParse->db;
- assert( db!=0 );
-/* if( db->aDb[0].pBt==0 ) return; */
+ assert( pParse->db!=0 );
if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION, "ROLLBACK", 0, 0) ){
return;
}
@@ -78250,7 +84580,7 @@
SQLITE_OPEN_DELETEONCLOSE |
SQLITE_OPEN_TEMP_DB;
- rc = sqlite3BtreeOpen(0, db, &pBt, 0, flags);
+ rc = sqlite3BtreeOpen(db->pVfs, 0, db, &pBt, 0, flags);
if( rc!=SQLITE_OK ){
sqlite3ErrorMsg(pParse, "unable to open a temporary database "
"file for storing temporary tables");
@@ -78299,12 +84629,13 @@
}
if( iDb>=0 ){
sqlite3 *db = pToplevel->db;
- int mask;
+ yDbMask mask;
assert( iDb<db->nDb );
assert( db->aDb[iDb].pBt!=0 || iDb==1 );
assert( iDb<SQLITE_MAX_ATTACHED+2 );
- mask = 1<<iDb;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
+ mask = ((yDbMask)1)<<iDb;
if( (pToplevel->cookieMask & mask)==0 ){
pToplevel->cookieMask |= mask;
pToplevel->cookieValue[iDb] = db->aDb[iDb].pSchema->schema_cookie;
@@ -78316,6 +84647,21 @@
}
/*
+** If argument zDb is NULL, then call sqlite3CodeVerifySchema() for each
+** attached database. Otherwise, invoke it for the database named zDb only.
+*/
+SQLITE_PRIVATE void sqlite3CodeVerifyNamedSchema(Parse *pParse, const char *zDb){
+ sqlite3 *db = pParse->db;
+ int i;
+ for(i=0; i<db->nDb; i++){
+ Db *pDb = &db->aDb[i];
+ if( pDb->pBt && (!zDb || 0==sqlite3StrICmp(zDb, pDb->zName)) ){
+ sqlite3CodeVerifySchema(pParse, i);
+ }
+ }
+}
+
+/*
** Generate VDBE code that prepares for doing an operation that
** might change the database.
**
@@ -78331,7 +84677,7 @@
SQLITE_PRIVATE void sqlite3BeginWriteOperation(Parse *pParse, int setStatement, int iDb){
Parse *pToplevel = sqlite3ParseToplevel(pParse);
sqlite3CodeVerifySchema(pParse, iDb);
- pToplevel->writeMask |= 1<<iDb;
+ pToplevel->writeMask |= ((yDbMask)1)<<iDb;
pToplevel->isMultiWrite |= setStatement;
}
@@ -78431,6 +84777,7 @@
HashElem *k; /* For looping over tables in pDb */
Table *pTab; /* A table in the database */
+ assert( sqlite3BtreeHoldsAllMutexes(db) ); /* Needed for schema access */
for(iDb=0, pDb=db->aDb; iDb<db->nDb; iDb++, pDb++){
assert( pDb!=0 );
for(k=sqliteHashFirst(&pDb->pSchema->tblHash); k; k=sqliteHashNext(k)){
@@ -78949,12 +85296,12 @@
/*
** Free all resources held by the schema structure. The void* argument points
** at a Schema struct. This function does not call sqlite3DbFree(db, ) on the
-** pointer itself, it just cleans up subsiduary resources (i.e. the contents
+** pointer itself, it just cleans up subsidiary resources (i.e. the contents
** of the schema hash tables).
**
** The Schema.cache_size variable is not cleared.
*/
-SQLITE_PRIVATE void sqlite3SchemaFree(void *p){
+SQLITE_PRIVATE void sqlite3SchemaClear(void *p){
Hash temp1;
Hash temp2;
HashElem *pElem;
@@ -78976,7 +85323,10 @@
sqlite3HashClear(&temp1);
sqlite3HashClear(&pSchema->fkeyHash);
pSchema->pSeqTab = 0;
- pSchema->flags &= ~DB_SchemaLoaded;
+ if( pSchema->flags & DB_SchemaLoaded ){
+ pSchema->iGeneration++;
+ pSchema->flags &= ~DB_SchemaLoaded;
+ }
}
/*
@@ -78986,7 +85336,7 @@
SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *db, Btree *pBt){
Schema * p;
if( pBt ){
- p = (Schema *)sqlite3BtreeSchema(pBt, sizeof(Schema), sqlite3SchemaFree);
+ p = (Schema *)sqlite3BtreeSchema(pBt, sizeof(Schema), sqlite3SchemaClear);
}else{
p = (Schema *)sqlite3DbMallocZero(0, sizeof(Schema));
}
@@ -79020,9 +85370,18 @@
*/
/*
-** Look up every table that is named in pSrc. If any table is not found,
-** add an error message to pParse->zErrMsg and return NULL. If all tables
-** are found, return a pointer to the last table.
+** While a SrcList can in general represent multiple tables and subqueries
+** (as in the FROM clause of a SELECT statement) in this case it contains
+** the name of a single table, as one might find in an INSERT, DELETE,
+** or UPDATE statement. Look up that table in the symbol table and
+** return a pointer. Set an error message and return NULL if the table
+** name is not found or if any other error occurs.
+**
+** The following fields are initialized appropriate in pSrc:
+**
+** pSrc->a[0].pTab Pointer to the Table object
+** pSrc->a[0].pIndex Pointer to the INDEXED BY index, if there is one
+**
*/
SQLITE_PRIVATE Table *sqlite3SrcListLookup(Parse *pParse, SrcList *pSrc){
struct SrcList_item *pItem = pSrc->a;
@@ -79144,7 +85503,6 @@
*/
if( pOrderBy && (pLimit == 0) ) {
sqlite3ErrorMsg(pParse, "ORDER BY without LIMIT on %s", zStmtType);
- pParse->parseError = 1;
goto limit_where_cleanup_2;
}
@@ -79367,7 +85725,9 @@
/* Collect rowids of every row to be deleted.
*/
sqlite3VdbeAddOp2(v, OP_Null, 0, iRowSet);
- pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere,0,WHERE_DUPLICATES_OK);
+ pWInfo = sqlite3WhereBegin(
+ pParse, pTabList, pWhere, 0, 0, WHERE_DUPLICATES_OK
+ );
if( pWInfo==0 ) goto delete_from_cleanup;
regRowid = sqlite3ExprCodeGetColumn(pParse, pTab, -1, iCur, iRowid);
sqlite3VdbeAddOp2(v, OP_RowSetAdd, iRowSet, regRowid);
@@ -79397,6 +85757,7 @@
const char *pVTab = (const char *)sqlite3GetVTable(db, pTab);
sqlite3VtabMakeWritable(pParse, pTab);
sqlite3VdbeAddOp4(v, OP_VUpdate, 0, 1, iRowid, pVTab, P4_VTAB);
+ sqlite3VdbeChangeP5(v, OE_Abort);
sqlite3MayAbort(pParse);
}else
#endif
@@ -79541,7 +85902,7 @@
sqlite3GenerateRowIndexDelete(pParse, pTab, iCur, 0);
sqlite3VdbeAddOp2(v, OP_Delete, iCur, (count?OPFLAG_NCHANGE:0));
if( count ){
- sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_STATIC);
+ sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_TRANSIENT);
}
}
@@ -79631,8 +85992,14 @@
}
}
if( doMakeRec ){
+ const char *zAff;
+ if( pTab->pSelect || (pParse->db->flags & SQLITE_IdxRealAsInt)!=0 ){
+ zAff = 0;
+ }else{
+ zAff = sqlite3IndexAffinityStr(v, pIdx);
+ }
sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nCol+1, regOut);
- sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v, pIdx), 0);
+ sqlite3VdbeChangeP4(v, -1, zAff, P4_TRANSIENT);
}
sqlite3ReleaseTempRange(pParse, regBase, nCol+1);
return regBase;
@@ -79658,6 +86025,8 @@
** sqliteRegisterBuildinFunctions() found at the bottom of the file.
** All other code has file scope.
*/
+/* #include <stdlib.h> */
+/* #include <assert.h> */
/*
** Return the collating function associated with a function.
@@ -79970,16 +86339,15 @@
if( z2 ){
z1 = contextMalloc(context, ((i64)n)+1);
if( z1 ){
- memcpy(z1, z2, n+1);
- for(i=0; z1[i]; i++){
- z1[i] = (char)sqlite3Toupper(z1[i]);
+ for(i=0; i<n; i++){
+ z1[i] = (char)sqlite3Toupper(z2[i]);
}
- sqlite3_result_text(context, z1, -1, sqlite3_free);
+ sqlite3_result_text(context, z1, n, sqlite3_free);
}
}
}
static void lowerFunc(sqlite3_context *context, int argc, sqlite3_value **argv){
- u8 *z1;
+ char *z1;
const char *z2;
int i, n;
UNUSED_PARAMETER(argc);
@@ -79990,11 +86358,10 @@
if( z2 ){
z1 = contextMalloc(context, ((i64)n)+1);
if( z1 ){
- memcpy(z1, z2, n+1);
- for(i=0; z1[i]; i++){
- z1[i] = sqlite3Tolower(z1[i]);
+ for(i=0; i<n; i++){
+ z1[i] = sqlite3Tolower(z2[i]);
}
- sqlite3_result_text(context, (char *)z1, -1, sqlite3_free);
+ sqlite3_result_text(context, z1, n, sqlite3_free);
}
}
}
@@ -80144,10 +86511,10 @@
** whereas only characters less than 0x80 do in ASCII.
*/
#if defined(SQLITE_EBCDIC)
-# define sqlite3Utf8Read(A,C) (*(A++))
-# define GlogUpperToLower(A) A = sqlite3UpperToLower[A]
+# define sqlite3Utf8Read(A,C) (*(A++))
+# define GlogUpperToLower(A) A = sqlite3UpperToLower[A]
#else
-# define GlogUpperToLower(A) if( A<0x80 ){ A = sqlite3UpperToLower[A]; }
+# define GlogUpperToLower(A) if( !((A)&~0x7f) ){ A = sqlite3UpperToLower[A]; }
#endif
static const struct compareInfo globInfo = { '*', '?', '[', 0 };
@@ -80190,9 +86557,9 @@
const u8 *zPattern, /* The glob pattern */
const u8 *zString, /* The string to compare against the glob */
const struct compareInfo *pInfo, /* Information about how to do the compare */
- const int esc /* The escape character */
+ u32 esc /* The escape character */
){
- int c, c2;
+ u32 c, c2;
int invert;
int seen;
u8 matchOne = pInfo->matchOne;
@@ -80246,7 +86613,7 @@
return 0;
}
}else if( c==matchSet ){
- int prior_c = 0;
+ u32 prior_c = 0;
assert( esc==0 ); /* This only occurs for GLOB, not LIKE */
seen = 0;
invert = 0;
@@ -80322,7 +86689,7 @@
sqlite3_value **argv
){
const unsigned char *zA, *zB;
- int escape = 0;
+ u32 escape = 0;
int nPat;
sqlite3 *db = sqlite3_context_db_handle(context);
@@ -80413,6 +86780,21 @@
}
/*
+** Implementation of the sqlite_log() function. This is a wrapper around
+** sqlite3_log(). The return value is NULL. The function exists purely for
+** its side-effects.
+*/
+static void errlogFunc(
+ sqlite3_context *context,
+ int argc,
+ sqlite3_value **argv
+){
+ UNUSED_PARAMETER(argc);
+ UNUSED_PARAMETER(context);
+ sqlite3_log(sqlite3_value_int(argv[0]), "%s", sqlite3_value_text(argv[1]));
+}
+
+/*
** Implementation of the sqlite_compileoption_used() function.
** The result is an integer that identifies if the compiler option
** was used to build SQLite.
@@ -80877,13 +87259,8 @@
if( type==SQLITE_INTEGER ){
i64 v = sqlite3_value_int64(argv[0]);
p->rSum += v;
- if( (p->approx|p->overflow)==0 ){
- i64 iNewSum = p->iSum + v;
- int s1 = (int)(p->iSum >> (sizeof(i64)*8-1));
- int s2 = (int)(v >> (sizeof(i64)*8-1));
- int s3 = (int)(iNewSum >> (sizeof(i64)*8-1));
- p->overflow = ((s1&s2&~s3) | (~s1&~s2&s3))?1:0;
- p->iSum = iNewSum;
+ if( (p->approx|p->overflow)==0 && sqlite3AddInt64(&p->iSum, v) ){
+ p->overflow = 1;
}
}else{
p->rSum += sqlite3_value_double(argv[0]);
@@ -81088,9 +87465,9 @@
}else{
pInfo = (struct compareInfo*)&likeInfoNorm;
}
- sqlite3CreateFunc(db, "like", 2, SQLITE_ANY, pInfo, likeFunc, 0, 0, 0);
- sqlite3CreateFunc(db, "like", 3, SQLITE_ANY, pInfo, likeFunc, 0, 0, 0);
- sqlite3CreateFunc(db, "glob", 2, SQLITE_ANY,
+ sqlite3CreateFunc(db, "like", 2, SQLITE_UTF8, pInfo, likeFunc, 0, 0, 0);
+ sqlite3CreateFunc(db, "like", 3, SQLITE_UTF8, pInfo, likeFunc, 0, 0, 0);
+ sqlite3CreateFunc(db, "glob", 2, SQLITE_UTF8,
(struct compareInfo*)&globInfo, likeFunc, 0, 0, 0);
setLikeOptFlag(db, "glob", SQLITE_FUNC_LIKE | SQLITE_FUNC_CASE);
setLikeOptFlag(db, "like",
@@ -81184,6 +87561,7 @@
FUNCTION(nullif, 2, 0, 1, nullifFunc ),
FUNCTION(sqlite_version, 0, 0, 0, versionFunc ),
FUNCTION(sqlite_source_id, 0, 0, 0, sourceidFunc ),
+ FUNCTION(sqlite_log, 2, 0, 0, errlogFunc ),
#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS
FUNCTION(sqlite_compileoption_used,1, 0, 0, compileoptionusedFunc ),
FUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc ),
@@ -81622,19 +88000,31 @@
/* If the parent table is the same as the child table, and we are about
** to increment the constraint-counter (i.e. this is an INSERT operation),
** then check if the row being inserted matches itself. If so, do not
- ** increment the constraint-counter. */
+ ** increment the constraint-counter.
+ **
+ ** If any of the parent-key values are NULL, then the row cannot match
+ ** itself. So set JUMPIFNULL to make sure we do the OP_Found if any
+ ** of the parent-key values are NULL (at this point it is known that
+ ** none of the child key values are).
+ */
if( pTab==pFKey->pFrom && nIncr==1 ){
int iJump = sqlite3VdbeCurrentAddr(v) + nCol + 1;
for(i=0; i<nCol; i++){
int iChild = aiCol[i]+1+regData;
int iParent = pIdx->aiColumn[i]+1+regData;
+ assert( aiCol[i]!=pTab->iPKey );
+ if( pIdx->aiColumn[i]==pTab->iPKey ){
+ /* The parent key is a composite key that includes the IPK column */
+ iParent = regData;
+ }
sqlite3VdbeAddOp3(v, OP_Ne, iChild, iJump, iParent);
+ sqlite3VdbeChangeP5(v, SQLITE_JUMPIFNULL);
}
sqlite3VdbeAddOp2(v, OP_Goto, 0, iOk);
}
sqlite3VdbeAddOp3(v, OP_MakeRecord, regTemp, nCol, regRec);
- sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v, pIdx), 0);
+ sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v,pIdx), P4_TRANSIENT);
sqlite3VdbeAddOp4Int(v, OP_Found, iCur, iOk, regRec, 0);
sqlite3ReleaseTempReg(pParse, regRec);
@@ -81784,7 +88174,7 @@
** clause. If the constraint is not deferred, throw an exception for
** each row found. Otherwise, for deferred constraints, increment the
** deferred constraint counter by nIncr for each row selected. */
- pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0, 0);
+ pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0, 0, 0);
if( nIncr>0 && pFKey->isDeferred==0 ){
sqlite3ParseToplevel(pParse)->mayAbort = 1;
}
@@ -81923,7 +88313,6 @@
int regNew /* New row data is stored here */
){
sqlite3 *db = pParse->db; /* Database handle */
- Vdbe *v; /* VM to write code to */
FKey *pFKey; /* Used to iterate through FKs */
int iDb; /* Index of database containing pTab */
const char *zDb; /* Name of database containing pTab */
@@ -81935,7 +88324,6 @@
/* If foreign-keys are disabled, this function is a no-op. */
if( (db->flags&SQLITE_ForeignKeys)==0 ) return;
- v = sqlite3GetVdbe(pParse);
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
zDb = db->aDb[iDb].zName;
@@ -81960,7 +88348,24 @@
pTo = sqlite3LocateTable(pParse, 0, pFKey->zTo, zDb);
}
if( !pTo || locateFkeyIndex(pParse, pTo, pFKey, &pIdx, &aiFree) ){
+ assert( isIgnoreErrors==0 || (regOld!=0 && regNew==0) );
if( !isIgnoreErrors || db->mallocFailed ) return;
+ if( pTo==0 ){
+ /* If isIgnoreErrors is true, then a table is being dropped. In this
+ ** case SQLite runs a "DELETE FROM xxx" on the table being dropped
+ ** before actually dropping it in order to check FK constraints.
+ ** If the parent table of an FK constraint on the current table is
+ ** missing, behave as if it is empty. i.e. decrement the relevant
+ ** FK counter for each row of the current table with non-NULL keys.
+ */
+ Vdbe *v = sqlite3GetVdbe(pParse);
+ int iJump = sqlite3VdbeCurrentAddr(v) + pFKey->nCol + 1;
+ for(i=0; i<pFKey->nCol; i++){
+ int iReg = pFKey->aCol[i].iFrom + regOld + 1;
+ sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iJump);
+ }
+ sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, -1);
+ }
continue;
}
assert( pFKey->nCol==1 || (aiFree && pIdx) );
@@ -82333,6 +88738,7 @@
fkTriggerDelete(db, pTrigger);
return 0;
}
+ assert( pStep!=0 );
switch( action ){
case OE_Restrict:
@@ -82392,6 +88798,7 @@
FKey *pFKey; /* Iterator variable */
FKey *pNext; /* Copy of pFKey->pNextFrom */
+ assert( db==0 || sqlite3SchemaMutexHeld(db, 0, pTab->pSchema) );
for(pFKey=pTab->pFKey; pFKey; pFKey=pNext){
/* Remove the FK from the fkeyHash hash table. */
@@ -82475,7 +88882,7 @@
** 'd' INTEGER
** 'e' REAL
**
-** An extra 'b' is appended to the end of the string to cover the
+** An extra 'd' is appended to the end of the string to cover the
** rowid that appears as the last column in every index.
**
** Memory for the buffer containing the column index affinity string
@@ -82503,7 +88910,7 @@
for(n=0; n<pIdx->nColumn; n++){
pIdx->zColAff[n] = pTab->aCol[pIdx->aiColumn[n]].affinity;
}
- pIdx->zColAff[n++] = SQLITE_AFF_NONE;
+ pIdx->zColAff[n++] = SQLITE_AFF_INTEGER;
pIdx->zColAff[n] = 0;
}
@@ -82551,7 +88958,7 @@
pTab->zColAff = zColAff;
}
- sqlite3VdbeChangeP4(v, -1, pTab->zColAff, 0);
+ sqlite3VdbeChangeP4(v, -1, pTab->zColAff, P4_TRANSIENT);
}
/*
@@ -82665,7 +89072,9 @@
for(p = pParse->pAinc; p; p = p->pNext){
pDb = &db->aDb[p->iDb];
memId = p->regCtr;
+ assert( sqlite3SchemaMutexHeld(db, 0, pDb->pSchema) );
sqlite3OpenTable(pParse, 0, p->iDb, pDb->pSchema->pSeqTab, OP_OpenRead);
+ sqlite3VdbeAddOp3(v, OP_Null, 0, memId, memId+1);
addr = sqlite3VdbeCurrentAddr(v);
sqlite3VdbeAddOp4(v, OP_String8, 0, memId-1, 0, p->pTab->zName, 0);
sqlite3VdbeAddOp2(v, OP_Rewind, 0, addr+9);
@@ -82715,6 +89124,7 @@
int memId = p->regCtr;
iRec = sqlite3GetTempReg(pParse);
+ assert( sqlite3SchemaMutexHeld(db, 0, pDb->pSchema) );
sqlite3OpenTable(pParse, 0, p->iDb, pDb->pSchema->pSeqTab, OP_OpenWrite);
j1 = sqlite3VdbeAddOp1(v, OP_NotNull, memId+1);
j2 = sqlite3VdbeAddOp0(v, OP_Rewind);
@@ -82893,7 +89303,6 @@
int regIns; /* Block of regs holding rowid+data being inserted */
int regRowid; /* registers holding insert rowid */
int regData; /* register holding first column to insert */
- int regRecord; /* Holds the assemblied row record */
int regEof = 0; /* Register recording end of SELECT data */
int *aRegIdx = 0; /* One register allocated to each index */
@@ -83222,7 +89631,6 @@
/* Allocate registers for holding the rowid of the new row,
** the content of the new row, and the assemblied row record.
*/
- regRecord = ++pParse->nMem;
regRowid = regIns = pParse->nMem+1;
pParse->nMem += pTab->nCol + 1;
if( IsVirtual(pTab) ){
@@ -83397,6 +89805,7 @@
const char *pVTab = (const char *)sqlite3GetVTable(db, pTab);
sqlite3VtabMakeWritable(pParse, pTab);
sqlite3VdbeAddOp4(v, OP_VUpdate, 1, pTab->nCol+2, regIns, pVTab, P4_VTAB);
+ sqlite3VdbeChangeP5(v, onError==OE_Default ? OE_Abort : onError);
sqlite3MayAbort(pParse);
}else
#endif
@@ -83533,7 +89942,7 @@
** cause sqlite3_exec() to return immediately
** with SQLITE_CONSTRAINT.
**
-** any FAIL Sqlite_exec() returns immediately with a
+** any FAIL Sqlite3_exec() returns immediately with a
** return code of SQLITE_CONSTRAINT. The
** transaction is not rolled back and any
** prior changes are retained.
@@ -83616,7 +90025,7 @@
case OE_Rollback:
case OE_Fail: {
char *zMsg;
- j1 = sqlite3VdbeAddOp3(v, OP_HaltIfNull,
+ sqlite3VdbeAddOp3(v, OP_HaltIfNull,
SQLITE_CONSTRAINT, onError, regData+i);
zMsg = sqlite3MPrintf(pParse->db, "%s.%s may not be NULL",
pTab->zName, pTab->aCol[i].zName);
@@ -83756,7 +90165,7 @@
}
sqlite3VdbeAddOp2(v, OP_SCopy, regRowid, regIdx+i);
sqlite3VdbeAddOp3(v, OP_MakeRecord, regIdx, pIdx->nColumn+1, aRegIdx[iCur]);
- sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v, pIdx), 0);
+ sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v, pIdx), P4_TRANSIENT);
sqlite3ExprCacheAffinityChange(pParse, regIdx, pIdx->nColumn+1);
/* Find out what action to take in case there is an indexing conflict */
@@ -83896,7 +90305,7 @@
}
sqlite3VdbeAddOp3(v, OP_Insert, baseCur, regRec, regRowid);
if( !pParse->nested ){
- sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_STATIC);
+ sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_TRANSIENT);
}
sqlite3VdbeChangeP5(v, pik_flags);
}
@@ -84005,31 +90414,25 @@
**
** INSERT INTO tab1 SELECT * FROM tab2;
**
-** This optimization is only attempted if
+** The xfer optimization transfers raw records from tab2 over to tab1.
+** Columns are not decoded and reassemblied, which greatly improves
+** performance. Raw index records are transferred in the same way.
**
-** (1) tab1 and tab2 have identical schemas including all the
-** same indices and constraints
+** The xfer optimization is only attempted if tab1 and tab2 are compatible.
+** There are lots of rules for determining compatibility - see comments
+** embedded in the code for details.
**
-** (2) tab1 and tab2 are different tables
+** This routine returns TRUE if the optimization is guaranteed to be used.
+** Sometimes the xfer optimization will only work if the destination table
+** is empty - a factor that can only be determined at run-time. In that
+** case, this routine generates code for the xfer optimization but also
+** does a test to see if the destination table is empty and jumps over the
+** xfer optimization code if the test fails. In that case, this routine
+** returns FALSE so that the caller will know to go ahead and generate
+** an unoptimized transfer. This routine also returns FALSE if there
+** is no chance that the xfer optimization can be applied.
**
-** (3) There must be no triggers on tab1
-**
-** (4) The result set of the SELECT statement is "*"
-**
-** (5) The SELECT statement has no WHERE, HAVING, ORDER BY, GROUP BY,
-** or LIMIT clause.
-**
-** (6) The SELECT statement is a simple (not a compound) select that
-** contains only tab2 in its FROM clause
-**
-** This method for implementing the INSERT transfers raw records from
-** tab2 over to tab1. The columns are not decoded. Raw records from
-** the indices of tab2 are transfered to tab1 as well. In so doing,
-** the resulting tab1 has much less fragmentation.
-**
-** This routine returns TRUE if the optimization is attempted. If any
-** of the conditions above fail so that the optimization should not
-** be attempted, then this routine returns FALSE.
+** This optimization is particularly useful at making VACUUM run faster.
*/
static int xferOptimization(
Parse *pParse, /* Parser context */
@@ -84066,10 +90469,8 @@
}
#endif
if( onError==OE_Default ){
- onError = OE_Abort;
- }
- if( onError!=OE_Abort && onError!=OE_Rollback ){
- return 0; /* Cannot do OR REPLACE or OR IGNORE or OR FAIL */
+ if( pDest->iPKey>=0 ) onError = pDest->keyConf;
+ if( onError==OE_Default ) onError = OE_Abort;
}
assert(pSelect->pSrc); /* allocated even if there is no FROM clause */
if( pSelect->pSrc->nSrc!=1 ){
@@ -84162,14 +90563,25 @@
return 0; /* Tables have different CHECK constraints. Ticket #2252 */
}
#endif
+#ifndef SQLITE_OMIT_FOREIGN_KEY
+ /* Disallow the transfer optimization if the destination table constains
+ ** any foreign key constraints. This is more restrictive than necessary.
+ ** But the main beneficiary of the transfer optimization is the VACUUM
+ ** command, and the VACUUM command disables foreign key constraints. So
+ ** the extra complication to make this rule less restrictive is probably
+ ** not worth the effort. Ticket [6284df89debdfa61db8073e062908af0c9b6118e]
+ */
+ if( (pParse->db->flags & SQLITE_ForeignKeys)!=0 && pDest->pFKey!=0 ){
+ return 0;
+ }
+#endif
+ if( (pParse->db->flags & SQLITE_CountRows)!=0 ){
+ return 0; /* xfer opt does not play well with PRAGMA count_changes */
+ }
- /* If we get this far, it means either:
- **
- ** * We can always do the transfer if the table contains an
- ** an integer primary key
- **
- ** * We can conditionally do the transfer if the destination
- ** table is empty.
+ /* If we get this far, it means that the xfer optimization is at
+ ** least a possibility, though it might only work if the destination
+ ** table (tab1) is initially empty.
*/
#ifdef SQLITE_TEST
sqlite3_xferopt_count++;
@@ -84181,16 +90593,23 @@
iDest = pParse->nTab++;
regAutoinc = autoIncBegin(pParse, iDbDest, pDest);
sqlite3OpenTable(pParse, iDest, iDbDest, pDest, OP_OpenWrite);
- if( (pDest->iPKey<0 && pDest->pIndex!=0) || destHasUniqueIdx ){
- /* If tables do not have an INTEGER PRIMARY KEY and there
- ** are indices to be copied and the destination is not empty,
- ** we have to disallow the transfer optimization because the
- ** the rowids might change which will mess up indexing.
+ if( (pDest->iPKey<0 && pDest->pIndex!=0) /* (1) */
+ || destHasUniqueIdx /* (2) */
+ || (onError!=OE_Abort && onError!=OE_Rollback) /* (3) */
+ ){
+ /* In some circumstances, we are able to run the xfer optimization
+ ** only if the destination table is initially empty. This code makes
+ ** that determination. Conditions under which the destination must
+ ** be empty:
**
- ** Or if the destination has a UNIQUE index and is not empty,
- ** we also disallow the transfer optimization because we cannot
- ** insure that all entries in the union of DEST and SRC will be
- ** unique.
+ ** (1) There is no INTEGER PRIMARY KEY but there are indices.
+ ** (If the destination is not initially empty, the rowid fields
+ ** of index entries might need to change.)
+ **
+ ** (2) The destination has a unique index. (The xfer optimization
+ ** is unable to test uniqueness.)
+ **
+ ** (3) onError is something other than OE_Abort and OE_Rollback.
*/
addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iDest, 0);
emptyDestTest = sqlite3VdbeAddOp2(v, OP_Goto, 0, 0);
@@ -84476,8 +90895,10 @@
int (*busy_timeout)(sqlite3*,int ms);
int (*changes)(sqlite3*);
int (*close)(sqlite3*);
- int (*collation_needed)(sqlite3*,void*,void(*)(void*,sqlite3*,int eTextRep,const char*));
- int (*collation_needed16)(sqlite3*,void*,void(*)(void*,sqlite3*,int eTextRep,const void*));
+ int (*collation_needed)(sqlite3*,void*,void(*)(void*,sqlite3*,
+ int eTextRep,const char*));
+ int (*collation_needed16)(sqlite3*,void*,void(*)(void*,sqlite3*,
+ int eTextRep,const void*));
const void * (*column_blob)(sqlite3_stmt*,int iCol);
int (*column_bytes)(sqlite3_stmt*,int iCol);
int (*column_bytes16)(sqlite3_stmt*,int iCol);
@@ -84502,10 +90923,18 @@
void * (*commit_hook)(sqlite3*,int(*)(void*),void*);
int (*complete)(const char*sql);
int (*complete16)(const void*sql);
- int (*create_collation)(sqlite3*,const char*,int,void*,int(*)(void*,int,const void*,int,const void*));
- int (*create_collation16)(sqlite3*,const void*,int,void*,int(*)(void*,int,const void*,int,const void*));
- int (*create_function)(sqlite3*,const char*,int,int,void*,void (*xFunc)(sqlite3_context*,int,sqlite3_value**),void (*xStep)(sqlite3_context*,int,sqlite3_value**),void (*xFinal)(sqlite3_context*));
- int (*create_function16)(sqlite3*,const void*,int,int,void*,void (*xFunc)(sqlite3_context*,int,sqlite3_value**),void (*xStep)(sqlite3_context*,int,sqlite3_value**),void (*xFinal)(sqlite3_context*));
+ int (*create_collation)(sqlite3*,const char*,int,void*,
+ int(*)(void*,int,const void*,int,const void*));
+ int (*create_collation16)(sqlite3*,const void*,int,void*,
+ int(*)(void*,int,const void*,int,const void*));
+ int (*create_function)(sqlite3*,const char*,int,int,void*,
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
+ void (*xFinal)(sqlite3_context*));
+ int (*create_function16)(sqlite3*,const void*,int,int,void*,
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
+ void (*xFinal)(sqlite3_context*));
int (*create_module)(sqlite3*,const char*,const sqlite3_module*,void*);
int (*data_count)(sqlite3_stmt*pStmt);
sqlite3 * (*db_handle)(sqlite3_stmt*);
@@ -84550,16 +90979,19 @@
void (*result_text16le)(sqlite3_context*,const void*,int,void(*)(void*));
void (*result_value)(sqlite3_context*,sqlite3_value*);
void * (*rollback_hook)(sqlite3*,void(*)(void*),void*);
- int (*set_authorizer)(sqlite3*,int(*)(void*,int,const char*,const char*,const char*,const char*),void*);
+ int (*set_authorizer)(sqlite3*,int(*)(void*,int,const char*,const char*,
+ const char*,const char*),void*);
void (*set_auxdata)(sqlite3_context*,int,void*,void (*)(void*));
char * (*snprintf)(int,char*,const char*,...);
int (*step)(sqlite3_stmt*);
- int (*table_column_metadata)(sqlite3*,const char*,const char*,const char*,char const**,char const**,int*,int*,int*);
+ int (*table_column_metadata)(sqlite3*,const char*,const char*,const char*,
+ char const**,char const**,int*,int*,int*);
void (*thread_cleanup)(void);
int (*total_changes)(sqlite3*);
void * (*trace)(sqlite3*,void(*xTrace)(void*,const char*),void*);
int (*transfer_bindings)(sqlite3_stmt*,sqlite3_stmt*);
- void * (*update_hook)(sqlite3*,void(*)(void*,int ,char const*,char const*,sqlite_int64),void*);
+ void * (*update_hook)(sqlite3*,void(*)(void*,int ,char const*,char const*,
+ sqlite_int64),void*);
void * (*user_data)(sqlite3_context*);
const void * (*value_blob)(sqlite3_value*);
int (*value_bytes)(sqlite3_value*);
@@ -84581,15 +91013,19 @@
int (*prepare16_v2)(sqlite3*,const void*,int,sqlite3_stmt**,const void**);
int (*clear_bindings)(sqlite3_stmt*);
/* Added by 3.4.1 */
- int (*create_module_v2)(sqlite3*,const char*,const sqlite3_module*,void*,void (*xDestroy)(void *));
+ int (*create_module_v2)(sqlite3*,const char*,const sqlite3_module*,void*,
+ void (*xDestroy)(void *));
/* Added by 3.5.0 */
int (*bind_zeroblob)(sqlite3_stmt*,int,int);
int (*blob_bytes)(sqlite3_blob*);
int (*blob_close)(sqlite3_blob*);
- int (*blob_open)(sqlite3*,const char*,const char*,const char*,sqlite3_int64,int,sqlite3_blob**);
+ int (*blob_open)(sqlite3*,const char*,const char*,const char*,sqlite3_int64,
+ int,sqlite3_blob**);
int (*blob_read)(sqlite3_blob*,void*,int,int);
int (*blob_write)(sqlite3_blob*,const void*,int,int);
- int (*create_collation_v2)(sqlite3*,const char*,int,void*,int(*)(void*,int,const void*,int,const void*),void(*)(void*));
+ int (*create_collation_v2)(sqlite3*,const char*,int,void*,
+ int(*)(void*,int,const void*,int,const void*),
+ void(*)(void*));
int (*file_control)(sqlite3*,const char*,int,void*);
sqlite3_int64 (*memory_highwater)(int);
sqlite3_int64 (*memory_used)(void);
@@ -84625,7 +91061,11 @@
int (*backup_step)(sqlite3_backup*,int);
const char *(*compileoption_get)(int);
int (*compileoption_used)(const char*);
- int (*create_function_v2)(sqlite3*,const char*,int,int,void*,void (*xFunc)(sqlite3_context*,int,sqlite3_value**),void (*xStep)(sqlite3_context*,int,sqlite3_value**),void (*xFinal)(sqlite3_context*),void(*xDestroy)(void*));
+ int (*create_function_v2)(sqlite3*,const char*,int,int,void*,
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
+ void (*xFinal)(sqlite3_context*),
+ void(*xDestroy)(void*));
int (*db_config)(sqlite3*,int,...);
sqlite3_mutex *(*db_mutex)(sqlite3*);
int (*db_status)(sqlite3*,int,int*,int*,int);
@@ -84639,6 +91079,9 @@
int (*wal_autocheckpoint)(sqlite3*,int);
int (*wal_checkpoint)(sqlite3*,const char*);
void *(*wal_hook)(sqlite3*,int(*)(void*,sqlite3*,const char*,int),void*);
+ int (*blob_reopen)(sqlite3_blob*,sqlite3_int64);
+ int (*vtab_config)(sqlite3*,int op,...);
+ int (*vtab_on_conflict)(sqlite3*);
};
/*
@@ -84839,6 +91282,9 @@
#define sqlite3_wal_autocheckpoint sqlite3_api->wal_autocheckpoint
#define sqlite3_wal_checkpoint sqlite3_api->wal_checkpoint
#define sqlite3_wal_hook sqlite3_api->wal_hook
+#define sqlite3_blob_reopen sqlite3_api->blob_reopen
+#define sqlite3_vtab_config sqlite3_api->vtab_config
+#define sqlite3_vtab_on_conflict sqlite3_api->vtab_on_conflict
#endif /* SQLITE_CORE */
#define SQLITE_EXTENSION_INIT1 const sqlite3_api_routines *sqlite3_api = 0;
@@ -84848,6 +91294,7 @@
/************** End of sqlite3ext.h ******************************************/
/************** Continuing where we left off in loadext.c ********************/
+/* #include <string.h> */
#ifndef SQLITE_OMIT_LOAD_EXTENSION
@@ -84900,6 +91347,11 @@
# define sqlite3_complete16 0
#endif
+#ifdef SQLITE_OMIT_DECLTYPE
+# define sqlite3_column_decltype16 0
+# define sqlite3_column_decltype 0
+#endif
+
#ifdef SQLITE_OMIT_PROGRESS_CALLBACK
# define sqlite3_progress_handler 0
#endif
@@ -84908,6 +91360,8 @@
# define sqlite3_create_module 0
# define sqlite3_create_module_v2 0
# define sqlite3_declare_vtab 0
+# define sqlite3_vtab_config 0
+# define sqlite3_vtab_on_conflict 0
#endif
#ifdef SQLITE_OMIT_SHARED_CACHE
@@ -84931,6 +91385,7 @@
#define sqlite3_blob_open 0
#define sqlite3_blob_read 0
#define sqlite3_blob_write 0
+#define sqlite3_blob_reopen 0
#endif
/*
@@ -85196,6 +91651,9 @@
0,
0,
#endif
+ sqlite3_blob_reopen,
+ sqlite3_vtab_config,
+ sqlite3_vtab_on_conflict,
};
/*
@@ -85221,7 +91679,7 @@
int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*);
char *zErrmsg = 0;
void **aHandle;
- const int nMsg = 300;
+ int nMsg = 300 + sqlite3Strlen30(zFile);
if( pzErrMsg ) *pzErrMsg = 0;
@@ -85258,6 +91716,7 @@
sqlite3OsDlSym(pVfs, handle, zProc);
if( xInit==0 ){
if( pzErrMsg ){
+ nMsg += sqlite3Strlen30(zProc);
*pzErrMsg = zErrmsg = sqlite3_malloc(nMsg);
if( zErrmsg ){
sqlite3_snprintf(nMsg, zErrmsg,
@@ -85442,6 +91901,7 @@
SQLITE_PRIVATE void sqlite3AutoLoadExtensions(sqlite3 *db){
int i;
int go = 1;
+ int rc;
int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*);
wsdAutoextInit;
@@ -85464,8 +91924,8 @@
}
sqlite3_mutex_leave(mutex);
zErrmsg = 0;
- if( xInit && xInit(db, &zErrmsg, &sqlite3Apis) ){
- sqlite3Error(db, SQLITE_ERROR,
+ if( xInit && (rc = xInit(db, &zErrmsg, &sqlite3Apis))!=0 ){
+ sqlite3Error(db, rc,
"automatic extension loading failed: %s", zErrmsg);
go = 0;
}
@@ -85489,10 +91949,6 @@
** This file contains code used to implement the PRAGMA command.
*/
-/* Ignore this whole file if pragmas are disabled
-*/
-#if !defined(SQLITE_OMIT_PRAGMA)
-
/*
** Interpret the given string as a safety level. Return 0 for OFF,
** 1 for ON or NORMAL and 2 for FULL. Return 1 for an empty or
@@ -85525,10 +91981,16 @@
/*
** Interpret the given string as a boolean value.
*/
-static u8 getBoolean(const char *z){
+SQLITE_PRIVATE u8 sqlite3GetBoolean(const char *z){
return getSafetyLevel(z)&1;
}
+/* The sqlite3GetBoolean() function is used by other modules but the
+** remainder of this file is specific to PRAGMA processing. So omit
+** the rest of the file if PRAGMAs are omitted from the build.
+*/
+#if !defined(SQLITE_OMIT_PRAGMA)
+
/*
** Interpret the given string as a locking mode value.
*/
@@ -85591,7 +92053,7 @@
}
sqlite3BtreeClose(db->aDb[1].pBt);
db->aDb[1].pBt = 0;
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
}
return SQLITE_OK;
}
@@ -85695,7 +92157,7 @@
mask &= ~(SQLITE_ForeignKeys);
}
- if( getBoolean(zRight) ){
+ if( sqlite3GetBoolean(zRight) ){
db->flags |= mask;
}else{
db->flags &= ~mask;
@@ -85820,7 +92282,7 @@
goto pragma_out;
}
-#ifndef SQLITE_OMIT_PAGER_PRAGMAS
+#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && !defined(SQLITE_OMIT_DEPRECATED)
/*
** PRAGMA [database.]default_cache_size
** PRAGMA [database.]default_cache_size=N
@@ -85860,16 +92322,18 @@
sqlite3VdbeChangeP1(v, addr+1, iDb);
sqlite3VdbeChangeP1(v, addr+6, SQLITE_DEFAULT_CACHE_SIZE);
}else{
- int size = sqlite3Atoi(zRight);
- if( size<0 ) size = -size;
+ int size = sqlite3AbsInt32(sqlite3Atoi(zRight));
sqlite3BeginWriteOperation(pParse, 0, iDb);
sqlite3VdbeAddOp2(v, OP_Integer, size, 1);
sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_DEFAULT_CACHE_SIZE, 1);
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
pDb->pSchema->cache_size = size;
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
}
}else
+#endif /* !SQLITE_OMIT_PAGER_PRAGMAS && !SQLITE_OMIT_DEPRECATED */
+#if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
/*
** PRAGMA [database.]page_size
** PRAGMA [database.]page_size=N
@@ -85890,7 +92354,7 @@
** buffer that the pager module resizes using sqlite3_realloc().
*/
db->nextPagesize = sqlite3Atoi(zRight);
- if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize, -1, 0) ){
+ if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize,-1,0) ){
db->mallocFailed = 1;
}
}
@@ -85909,7 +92373,7 @@
int b = -1;
assert( pBt!=0 );
if( zRight ){
- b = getBoolean(zRight);
+ b = sqlite3GetBoolean(zRight);
}
if( pId2->n==0 && b>=0 ){
int ii;
@@ -85930,6 +92394,10 @@
** second form attempts to change this setting. Both
** forms return the current setting.
**
+ ** The absolute value of N is used. This is undocumented and might
+ ** change. The only purpose is to provide an easy way to test
+ ** the sqlite3AbsInt32() function.
+ **
** PRAGMA [database.]page_count
**
** Return the number of pages in the specified database.
@@ -85941,10 +92409,11 @@
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
sqlite3CodeVerifySchema(pParse, iDb);
iReg = ++pParse->nMem;
- if( zLeft[0]=='p' ){
+ if( sqlite3Tolower(zLeft[0])=='p' ){
sqlite3VdbeAddOp2(v, OP_Pagecount, iDb, iReg);
}else{
- sqlite3VdbeAddOp3(v, OP_MaxPgcnt, iDb, iReg, sqlite3Atoi(zRight));
+ sqlite3VdbeAddOp3(v, OP_MaxPgcnt, iDb, iReg,
+ sqlite3AbsInt32(sqlite3Atoi(zRight)));
}
sqlite3VdbeAddOp2(v, OP_ResultRow, iReg, 1);
sqlite3VdbeSetNumCols(v, 1);
@@ -86007,8 +92476,10 @@
int eMode; /* One of the PAGER_JOURNALMODE_XXX symbols */
int ii; /* Loop counter */
- /* Force the schema to be loaded on all databases. This cases all
- ** database files to be opened and the journal_modes set. */
+ /* Force the schema to be loaded on all databases. This causes all
+ ** database files to be opened and the journal_modes set. This is
+ ** necessary because subsequent processing must know if the databases
+ ** are in WAL mode. */
if( sqlite3ReadSchema(pParse) ){
goto pragma_out;
}
@@ -86156,22 +92627,19 @@
** PRAGMA [database.]cache_size=N
**
** The first form reports the current local setting for the
- ** page cache size. The local setting can be different from
- ** the persistent cache size value that is stored in the database
- ** file itself. The value returned is the maximum number of
- ** pages in the page cache. The second form sets the local
- ** page cache size value. It does not change the persistent
- ** cache size stored on the disk so the cache size will revert
- ** to its default value when the database is closed and reopened.
- ** N should be a positive integer.
+ ** page cache size. The second form sets the local
+ ** page cache size value. If N is positive then that is the
+ ** number of pages in the cache. If N is negative, then the
+ ** number of pages is adjusted so that the cache uses -N kibibytes
+ ** of memory.
*/
if( sqlite3StrICmp(zLeft,"cache_size")==0 ){
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
if( !zRight ){
returnSingleInt(pParse, "cache_size", pDb->pSchema->cache_size);
}else{
int size = sqlite3Atoi(zRight);
- if( size<0 ) size = -size;
pDb->pSchema->cache_size = size;
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
}
@@ -86263,7 +92731,7 @@
Pager *pPager = sqlite3BtreePager(pDb->pBt);
char *proxy_file_path = NULL;
sqlite3_file *pFile = sqlite3PagerFile(pPager);
- sqlite3OsFileControl(pFile, SQLITE_GET_LOCKPROXYFILE,
+ sqlite3OsFileControlHint(pFile, SQLITE_GET_LOCKPROXYFILE,
&proxy_file_path);
if( proxy_file_path ){
@@ -86509,7 +92977,7 @@
#ifndef NDEBUG
if( sqlite3StrICmp(zLeft, "parser_trace")==0 ){
if( zRight ){
- if( getBoolean(zRight) ){
+ if( sqlite3GetBoolean(zRight) ){
sqlite3ParserTrace(stderr, "parser: ");
}else{
sqlite3ParserTrace(0, 0);
@@ -86523,7 +92991,7 @@
*/
if( sqlite3StrICmp(zLeft, "case_sensitive_like")==0 ){
if( zRight ){
- sqlite3RegisterLikeFunctions(db, getBoolean(zRight));
+ sqlite3RegisterLikeFunctions(db, sqlite3GetBoolean(zRight));
}
}else
@@ -86552,7 +93020,7 @@
{ OP_ResultRow, 3, 1, 0},
};
- int isQuick = (zLeft[0]=='q');
+ int isQuick = (sqlite3Tolower(zLeft[0])=='q');
/* Initialize the VDBE program */
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
@@ -86588,6 +93056,7 @@
** Begin by filling registers 2, 3, ... with the root pages numbers
** for all tables and indices in the database.
*/
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
pTbls = &db->aDb[i].pSchema->tblHash;
for(x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){
Table *pTab = sqliteHashData(x);
@@ -86653,7 +93122,7 @@
addr = sqlite3VdbeAddOpList(v, ArraySize(idxErr), idxErr);
sqlite3VdbeChangeP4(v, addr+1, "rowid ", P4_STATIC);
sqlite3VdbeChangeP4(v, addr+3, " missing from index ", P4_STATIC);
- sqlite3VdbeChangeP4(v, addr+4, pIdx->zName, P4_STATIC);
+ sqlite3VdbeChangeP4(v, addr+4, pIdx->zName, P4_TRANSIENT);
sqlite3VdbeJumpHere(v, addr+9);
sqlite3VdbeJumpHere(v, jmp2);
}
@@ -86683,7 +93152,7 @@
sqlite3VdbeJumpHere(v, addr+4);
sqlite3VdbeChangeP4(v, addr+6,
"wrong # of entries in index ", P4_STATIC);
- sqlite3VdbeChangeP4(v, addr+7, pIdx->zName, P4_STATIC);
+ sqlite3VdbeChangeP4(v, addr+7, pIdx->zName, P4_TRANSIENT);
}
}
}
@@ -86862,13 +93331,29 @@
#ifndef SQLITE_OMIT_WAL
/*
- ** PRAGMA [database.]wal_checkpoint
+ ** PRAGMA [database.]wal_checkpoint = passive|full|restart
**
** Checkpoint the database.
*/
if( sqlite3StrICmp(zLeft, "wal_checkpoint")==0 ){
+ int iBt = (pId2->z?iDb:SQLITE_MAX_ATTACHED);
+ int eMode = SQLITE_CHECKPOINT_PASSIVE;
+ if( zRight ){
+ if( sqlite3StrICmp(zRight, "full")==0 ){
+ eMode = SQLITE_CHECKPOINT_FULL;
+ }else if( sqlite3StrICmp(zRight, "restart")==0 ){
+ eMode = SQLITE_CHECKPOINT_RESTART;
+ }
+ }
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
- sqlite3VdbeAddOp3(v, OP_Checkpoint, pId2->z?iDb:SQLITE_MAX_ATTACHED, 0, 0);
+ sqlite3VdbeSetNumCols(v, 3);
+ pParse->nMem = 3;
+ sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "busy", SQLITE_STATIC);
+ sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "log", SQLITE_STATIC);
+ sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "checkpointed", SQLITE_STATIC);
+
+ sqlite3VdbeAddOp3(v, OP_Checkpoint, iBt, eMode, 1);
+ sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
}else
/*
@@ -86889,6 +93374,16 @@
}else
#endif
+ /*
+ ** PRAGMA shrink_memory
+ **
+ ** This pragma attempts to free as much memory as possible from the
+ ** current database connection.
+ */
+ if( sqlite3StrICmp(zLeft, "shrink_memory")==0 ){
+ sqlite3_db_release_memory(db);
+ }else
+
#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
/*
** Report the current state of file logs for all databases
@@ -87019,7 +93514,7 @@
"%s - %s", *pData->pzErrMsg, zExtra);
}
}
- pData->rc = db->mallocFailed ? SQLITE_NOMEM : SQLITE_CORRUPT;
+ pData->rc = db->mallocFailed ? SQLITE_NOMEM : SQLITE_CORRUPT_BKPT;
}
/*
@@ -87126,7 +93621,7 @@
int meta[5];
InitData initData;
char const *zMasterSchema;
- char const *zMasterName = SCHEMA_TABLE(iDb);
+ char const *zMasterName;
int openedTransaction = 0;
/*
@@ -87263,10 +93758,13 @@
pDb->pSchema->enc = ENC(db);
if( pDb->pSchema->cache_size==0 ){
- size = meta[BTREE_DEFAULT_CACHE_SIZE-1];
+#ifndef SQLITE_OMIT_DEPRECATED
+ size = sqlite3AbsInt32(meta[BTREE_DEFAULT_CACHE_SIZE-1]);
if( size==0 ){ size = SQLITE_DEFAULT_CACHE_SIZE; }
- if( size<0 ) size = -size;
pDb->pSchema->cache_size = size;
+#else
+ pDb->pSchema->cache_size = SQLITE_DEFAULT_CACHE_SIZE;
+#endif
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
}
@@ -87324,7 +93822,7 @@
}
if( db->mallocFailed ){
rc = SQLITE_NOMEM;
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
}
if( rc==SQLITE_OK || (db->flags&SQLITE_RecoveryMode)){
/* Black magic: If the SQLITE_RecoveryMode flag is set, then consider
@@ -87456,7 +93954,9 @@
** value stored as part of the in-memory schema representation,
** set Parse.rc to SQLITE_SCHEMA. */
sqlite3BtreeGetMeta(pBt, BTREE_SCHEMA_VERSION, (u32 *)&cookie);
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
if( cookie!=db->aDb[iDb].pSchema->schema_cookie ){
+ sqlite3ResetInternalSchema(db, iDb);
pParse->rc = SQLITE_SCHEMA;
}
@@ -87598,9 +94098,6 @@
if( pParse->checkSchema ){
schemaIsValid(pParse);
}
- if( pParse->rc==SQLITE_SCHEMA ){
- sqlite3ResetInternalSchema(db, 0);
- }
if( db->mallocFailed ){
pParse->rc = SQLITE_NOMEM;
}
@@ -87769,7 +94266,7 @@
*/
static int sqlite3Prepare16(
sqlite3 *db, /* Database handle. */
- const void *zSql, /* UTF-8 encoded SQL statement. */
+ const void *zSql, /* UTF-16 encoded SQL statement. */
int nBytes, /* Length of zSql in bytes. */
int saveSqlFlag, /* True to save SQL text into the sqlite3_stmt */
sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */
@@ -87819,7 +94316,7 @@
*/
SQLITE_API int sqlite3_prepare16(
sqlite3 *db, /* Database handle. */
- const void *zSql, /* UTF-8 encoded SQL statement. */
+ const void *zSql, /* UTF-16 encoded SQL statement. */
int nBytes, /* Length of zSql in bytes. */
sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */
const void **pzTail /* OUT: End of parsed string */
@@ -87831,7 +94328,7 @@
}
SQLITE_API int sqlite3_prepare16_v2(
sqlite3 *db, /* Database handle. */
- const void *zSql, /* UTF-8 encoded SQL statement. */
+ const void *zSql, /* UTF-16 encoded SQL statement. */
int nBytes, /* Length of zSql in bytes. */
sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */
const void **pzTail /* OUT: End of parsed string */
@@ -87912,6 +94409,7 @@
pNew = sqlite3DbMallocZero(db, sizeof(*pNew) );
assert( db->mallocFailed || !pOffset || pLimit ); /* OFFSET implies LIMIT */
if( pNew==0 ){
+ assert( db->mallocFailed );
pNew = &standin;
memset(pNew, 0, sizeof(*pNew));
}
@@ -87936,7 +94434,10 @@
clearSelect(db, pNew);
if( pNew!=&standin ) sqlite3DbFree(db, pNew);
pNew = 0;
+ }else{
+ assert( pNew->pSrc!=0 || pParse->nErr>0 );
}
+ assert( pNew!=&standin );
return pNew;
}
@@ -88266,12 +94767,18 @@
int nExpr = pOrderBy->nExpr;
int regBase = sqlite3GetTempRange(pParse, nExpr+2);
int regRecord = sqlite3GetTempReg(pParse);
+ int op;
sqlite3ExprCacheClear(pParse);
sqlite3ExprCodeExprList(pParse, pOrderBy, regBase, 0);
sqlite3VdbeAddOp2(v, OP_Sequence, pOrderBy->iECursor, regBase+nExpr);
sqlite3ExprCodeMove(pParse, regData, regBase+nExpr+1, 1);
sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nExpr + 2, regRecord);
- sqlite3VdbeAddOp2(v, OP_IdxInsert, pOrderBy->iECursor, regRecord);
+ if( pSelect->selFlags & SF_UseSorter ){
+ op = OP_SorterInsert;
+ }else{
+ op = OP_IdxInsert;
+ }
+ sqlite3VdbeAddOp2(v, op, pOrderBy->iECursor, regRecord);
sqlite3ReleaseTempReg(pParse, regRecord);
sqlite3ReleaseTempRange(pParse, regBase, nExpr+2);
if( pSelect->iLimit ){
@@ -88654,6 +95161,22 @@
}
/*
+** Assign expression b to lvalue a. A second, no-op, version of this macro
+** is provided when SQLITE_OMIT_EXPLAIN is defined. This allows the code
+** in sqlite3Select() to assign values to structure member variables that
+** only exist if SQLITE_OMIT_EXPLAIN is not defined without polluting the
+** code with #ifndef directives.
+*/
+# define explainSetInteger(a, b) a = b
+
+#else
+/* No-op versions of the explainXXX() functions and macros. */
+# define explainTempTable(y,z)
+# define explainSetInteger(y,z)
+#endif
+
+#if !defined(SQLITE_OMIT_EXPLAIN) && !defined(SQLITE_OMIT_COMPOUND_SELECT)
+/*
** Unless an "EXPLAIN QUERY PLAN" command is being processed, this function
** is a no-op. Otherwise, it adds a single row of output to the EQP result,
** where the caption is of one of the two forms:
@@ -88684,21 +95207,9 @@
sqlite3VdbeAddOp4(v, OP_Explain, pParse->iSelectId, 0, 0, zMsg, P4_DYNAMIC);
}
}
-
-/*
-** Assign expression b to lvalue a. A second, no-op, version of this macro
-** is provided when SQLITE_OMIT_EXPLAIN is defined. This allows the code
-** in sqlite3Select() to assign values to structure member variables that
-** only exist if SQLITE_OMIT_EXPLAIN is not defined without polluting the
-** code with #ifndef directives.
-*/
-# define explainSetInteger(a, b) a = b
-
#else
/* No-op versions of the explainXXX() functions and macros. */
-# define explainTempTable(y,z)
# define explainComposite(v,w,x,y,z)
-# define explainSetInteger(y,z)
#endif
/*
@@ -88736,9 +95247,20 @@
}else{
regRowid = sqlite3GetTempReg(pParse);
}
- addr = 1 + sqlite3VdbeAddOp2(v, OP_Sort, iTab, addrBreak);
- codeOffset(v, p, addrContinue);
- sqlite3VdbeAddOp3(v, OP_Column, iTab, pOrderBy->nExpr + 1, regRow);
+ if( p->selFlags & SF_UseSorter ){
+ int regSortOut = ++pParse->nMem;
+ int ptab2 = pParse->nTab++;
+ sqlite3VdbeAddOp3(v, OP_OpenPseudo, ptab2, regSortOut, pOrderBy->nExpr+2);
+ addr = 1 + sqlite3VdbeAddOp2(v, OP_SorterSort, iTab, addrBreak);
+ codeOffset(v, p, addrContinue);
+ sqlite3VdbeAddOp2(v, OP_SorterData, iTab, regSortOut);
+ sqlite3VdbeAddOp3(v, OP_Column, ptab2, pOrderBy->nExpr+1, regRow);
+ sqlite3VdbeChangeP5(v, OPFLAG_CLEARCACHE);
+ }else{
+ addr = 1 + sqlite3VdbeAddOp2(v, OP_Sort, iTab, addrBreak);
+ codeOffset(v, p, addrContinue);
+ sqlite3VdbeAddOp3(v, OP_Column, iTab, pOrderBy->nExpr+1, regRow);
+ }
switch( eDest ){
case SRT_Table:
case SRT_EphemTab: {
@@ -88791,7 +95313,11 @@
/* The bottom of the loop
*/
sqlite3VdbeResolveLabel(v, addrContinue);
- sqlite3VdbeAddOp2(v, OP_Next, iTab, addr);
+ if( p->selFlags & SF_UseSorter ){
+ sqlite3VdbeAddOp2(v, OP_SorterNext, iTab, addr);
+ }else{
+ sqlite3VdbeAddOp2(v, OP_Next, iTab, addr);
+ }
sqlite3VdbeResolveLabel(v, addrBreak);
if( eDest==SRT_Output || eDest==SRT_Coroutine ){
sqlite3VdbeAddOp2(v, OP_Close, pseudoTab, 0);
@@ -89090,7 +95616,10 @@
}else{
Expr *pColExpr = p; /* The expression that is the result column name */
Table *pTab; /* Table associated with this expression */
- while( pColExpr->op==TK_DOT ) pColExpr = pColExpr->pRight;
+ while( pColExpr->op==TK_DOT ){
+ pColExpr = pColExpr->pRight;
+ assert( pColExpr!=0 );
+ }
if( pColExpr->op==TK_COLUMN && ALWAYS(pColExpr->pTab!=0) ){
/* For columns use the column name name */
int iCol = pColExpr->iColumn;
@@ -90034,8 +96563,8 @@
for(i=1; db->mallocFailed==0 && i<=p->pEList->nExpr; i++){
struct ExprList_item *pItem;
for(j=0, pItem=pOrderBy->a; j<nOrderBy; j++, pItem++){
- assert( pItem->iCol>0 );
- if( pItem->iCol==i ) break;
+ assert( pItem->iOrderByCol>0 );
+ if( pItem->iOrderByCol==i ) break;
}
if( j==nOrderBy ){
Expr *pNew = sqlite3Expr(db, TK_INTEGER, 0);
@@ -90043,7 +96572,7 @@
pNew->flags |= EP_IntValue;
pNew->u.iValue = i;
pOrderBy = sqlite3ExprListAppend(pParse, pOrderBy, pNew);
- pOrderBy->a[nOrderBy++].iCol = (u16)i;
+ pOrderBy->a[nOrderBy++].iOrderByCol = (u16)i;
}
}
}
@@ -90059,8 +96588,8 @@
if( aPermute ){
struct ExprList_item *pItem;
for(i=0, pItem=pOrderBy->a; i<nOrderBy; i++, pItem++){
- assert( pItem->iCol>0 && pItem->iCol<=p->pEList->nExpr );
- aPermute[i] = pItem->iCol - 1;
+ assert( pItem->iOrderByCol>0 && pItem->iOrderByCol<=p->pEList->nExpr );
+ aPermute[i] = pItem->iOrderByCol - 1;
}
pKeyMerge =
sqlite3DbMallocRaw(db, sizeof(*pKeyMerge)+nOrderBy*(sizeof(CollSeq*)+1));
@@ -90403,9 +96932,8 @@
#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW)
/*
-** This routine attempts to flatten subqueries in order to speed
-** execution. It returns 1 if it makes changes and 0 if no flattening
-** occurs.
+** This routine attempts to flatten subqueries as a performance optimization.
+** This routine returns 1 if it makes changes and 0 if no flattening occurs.
**
** To understand the concept of flattening, consider the following
** query:
@@ -90447,7 +96975,10 @@
** (6) The subquery does not use aggregates or the outer query is not
** DISTINCT.
**
-** (7) The subquery has a FROM clause.
+** (7) The subquery has a FROM clause. TODO: For subqueries without
+** A FROM clause, consider adding a FROM close with the special
+** table sqlite_once that consists of a single row containing a
+** single NULL.
**
** (8) The subquery does not use LIMIT or the outer query is not a join.
**
@@ -90480,11 +97011,14 @@
**
** * is not itself part of a compound select,
** * is not an aggregate or DISTINCT query, and
-** * has no other tables or sub-selects in the FROM clause.
+** * is not a join
**
** The parent and sub-query may contain WHERE clauses. Subject to
** rules (11), (13) and (14), they may also contain ORDER BY,
-** LIMIT and OFFSET clauses.
+** LIMIT and OFFSET clauses. The subquery cannot use any compound
+** operator other than UNION ALL because all the other compound
+** operators have an implied DISTINCT which is disallowed by
+** restriction (4).
**
** (18) If the sub-query is a compound select, then all terms of the
** ORDER by clause of the parent must be simple references to
@@ -90496,9 +97030,12 @@
** (20) If the sub-query is a compound select, then it must not use
** an ORDER BY clause. Ticket #3773. We could relax this constraint
** somewhat by saying that the terms of the ORDER BY clause must
-** appear as unmodified result columns in the outer query. But
+** appear as unmodified result columns in the outer query. But we
** have other optimizations in mind to deal with that case.
**
+** (21) The subquery does not use LIMIT or the outer query is not
+** DISTINCT. (See ticket [752e1646fc]).
+**
** In this routine, the "p" parameter is a pointer to the outer query.
** The subquery is p->pSrc->a[iFrom]. isAgg is true if the outer query
** uses aggregates and subqueryIsAgg is true if the subquery uses aggregates.
@@ -90567,6 +97104,9 @@
}
if( isAgg && pSub->pOrderBy ) return 0; /* Restriction (16) */
if( pSub->pLimit && p->pWhere ) return 0; /* Restriction (19) */
+ if( pSub->pLimit && (p->selFlags & SF_Distinct)!=0 ){
+ return 0; /* Restriction (21) */
+ }
/* OBSOLETE COMMENT 1:
** Restriction 3: If the subquery is a join, make sure the subquery is
@@ -90619,19 +97159,21 @@
for(pSub1=pSub; pSub1; pSub1=pSub1->pPrior){
testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct );
testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Aggregate );
+ assert( pSub->pSrc!=0 );
if( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))!=0
|| (pSub1->pPrior && pSub1->op!=TK_ALL)
- || NEVER(pSub1->pSrc==0) || pSub1->pSrc->nSrc!=1
+ || pSub1->pSrc->nSrc<1
){
return 0;
}
+ testcase( pSub1->pSrc->nSrc>1 );
}
/* Restriction 18. */
if( p->pOrderBy ){
int ii;
for(ii=0; ii<p->pOrderBy->nExpr; ii++){
- if( p->pOrderBy->a[ii].iCol==0 ) return 0;
+ if( p->pOrderBy->a[ii].iOrderByCol==0 ) return 0;
}
}
}
@@ -91460,6 +98002,32 @@
}
/*
+** Add a single OP_Explain instruction to the VDBE to explain a simple
+** count(*) query ("SELECT count(*) FROM pTab").
+*/
+#ifndef SQLITE_OMIT_EXPLAIN
+static void explainSimpleCount(
+ Parse *pParse, /* Parse context */
+ Table *pTab, /* Table being queried */
+ Index *pIdx /* Index used to optimize scan, or NULL */
+){
+ if( pParse->explain==2 ){
+ char *zEqp = sqlite3MPrintf(pParse->db, "SCAN TABLE %s %s%s(~%d rows)",
+ pTab->zName,
+ pIdx ? "USING COVERING INDEX " : "",
+ pIdx ? pIdx->zName : "",
+ pTab->nRowEst
+ );
+ sqlite3VdbeAddOp4(
+ pParse->pVdbe, OP_Explain, pParse->iSelectId, 0, 0, zEqp, P4_DYNAMIC
+ );
+ }
+}
+#else
+# define explainSimpleCount(a,b,c)
+#endif
+
+/*
** Generate code for the SELECT statement given in the p argument.
**
** The results are distributed in various ways depending on the
@@ -91532,6 +98100,7 @@
int distinct; /* Table to use for the distinct set */
int rc = 1; /* Value to return from this function */
int addrSortIndex; /* Address of an OP_OpenEphemeral instruction */
+ int addrDistinctIndex; /* Address of an OP_OpenEphemeral instruction */
AggInfo sAggInfo; /* Information used by aggregate queries */
int iEnd; /* Address of the end of the query */
sqlite3 *db; /* The database connection */
@@ -91590,7 +98159,11 @@
Select *pSub = pItem->pSelect;
int isAggSub;
- if( pSub==0 || pItem->isPopulated ) continue;
+ if( pSub==0 ) continue;
+ if( pItem->addrFillSub ){
+ sqlite3VdbeAddOp2(v, OP_Gosub, pItem->regReturn, pItem->addrFillSub);
+ continue;
+ }
/* Increment Parse.nHeight by the height of the largest expression
** tree refered to by this, the parent select. The child select
@@ -91601,21 +98174,43 @@
*/
pParse->nHeight += sqlite3SelectExprHeight(p);
- /* Check to see if the subquery can be absorbed into the parent. */
isAggSub = (pSub->selFlags & SF_Aggregate)!=0;
if( flattenSubquery(pParse, p, i, isAgg, isAggSub) ){
+ /* This subquery can be absorbed into its parent. */
if( isAggSub ){
isAgg = 1;
p->selFlags |= SF_Aggregate;
}
i = -1;
}else{
+ /* Generate a subroutine that will fill an ephemeral table with
+ ** the content of this subquery. pItem->addrFillSub will point
+ ** to the address of the generated subroutine. pItem->regReturn
+ ** is a register allocated to hold the subroutine return address
+ */
+ int topAddr;
+ int onceAddr = 0;
+ int retAddr;
+ assert( pItem->addrFillSub==0 );
+ pItem->regReturn = ++pParse->nMem;
+ topAddr = sqlite3VdbeAddOp2(v, OP_Integer, 0, pItem->regReturn);
+ pItem->addrFillSub = topAddr+1;
+ VdbeNoopComment((v, "materialize %s", pItem->pTab->zName));
+ if( pItem->isCorrelated==0 ){
+ /* If the subquery is no correlated and if we are not inside of
+ ** a trigger, then we only need to compute the value of the subquery
+ ** once. */
+ onceAddr = sqlite3CodeOnce(pParse);
+ }
sqlite3SelectDestInit(&dest, SRT_EphemTab, pItem->iCursor);
- assert( pItem->isPopulated==0 );
explainSetInteger(pItem->iSelectId, (u8)pParse->iNextSelectId);
sqlite3Select(pParse, pSub, &dest);
- pItem->isPopulated = 1;
pItem->pTab->nRowEst = (unsigned)pSub->nSelectRow;
+ if( onceAddr ) sqlite3VdbeJumpHere(v, onceAddr);
+ retAddr = sqlite3VdbeAddOp1(v, OP_Return, pItem->regReturn);
+ VdbeComment((v, "end %s", pItem->pTab->zName));
+ sqlite3VdbeChangeP1(v, topAddr, retAddr);
+ sqlite3ClearTempRegCache(pParse);
}
if( /*pParse->nErr ||*/ db->mallocFailed ){
goto select_end;
@@ -91658,16 +98253,6 @@
}
#endif
- /* If possible, rewrite the query to use GROUP BY instead of DISTINCT.
- ** GROUP BY might use an index, DISTINCT never does.
- */
- assert( p->pGroupBy==0 || (p->selFlags & SF_Aggregate)!=0 );
- if( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct ){
- p->pGroupBy = sqlite3ExprListDup(db, p->pEList, 0);
- pGroupBy = p->pGroupBy;
- p->selFlags &= ~SF_Distinct;
- }
-
/* If there is both a GROUP BY and an ORDER BY clause and they are
** identical, then disable the ORDER BY clause since the GROUP BY
** will cause elements to come out in the correct order. This is
@@ -91680,6 +98265,30 @@
pOrderBy = 0;
}
+ /* If the query is DISTINCT with an ORDER BY but is not an aggregate, and
+ ** if the select-list is the same as the ORDER BY list, then this query
+ ** can be rewritten as a GROUP BY. In other words, this:
+ **
+ ** SELECT DISTINCT xyz FROM ... ORDER BY xyz
+ **
+ ** is transformed to:
+ **
+ ** SELECT xyz FROM ... GROUP BY xyz
+ **
+ ** The second form is preferred as a single index (or temp-table) may be
+ ** used for both the ORDER BY and DISTINCT processing. As originally
+ ** written the query must use a temp-table for at least one of the ORDER
+ ** BY and DISTINCT, and an index or separate temp-table for the other.
+ */
+ if( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct
+ && sqlite3ExprListCompare(pOrderBy, p->pEList)==0
+ ){
+ p->selFlags &= ~SF_Distinct;
+ p->pGroupBy = sqlite3ExprListDup(db, p->pEList, 0);
+ pGroupBy = p->pGroupBy;
+ pOrderBy = 0;
+ }
+
/* If there is an ORDER BY clause, then this sorting
** index might end up being unused if the data can be
** extracted in pre-sorted order. If that is the case, then the
@@ -91710,27 +98319,30 @@
iEnd = sqlite3VdbeMakeLabel(v);
p->nSelectRow = (double)LARGEST_INT64;
computeLimitRegisters(pParse, p, iEnd);
+ if( p->iLimit==0 && addrSortIndex>=0 ){
+ sqlite3VdbeGetOp(v, addrSortIndex)->opcode = OP_SorterOpen;
+ p->selFlags |= SF_UseSorter;
+ }
/* Open a virtual index to use for the distinct set.
*/
if( p->selFlags & SF_Distinct ){
KeyInfo *pKeyInfo;
- assert( isAgg || pGroupBy );
distinct = pParse->nTab++;
pKeyInfo = keyInfoFromExprList(pParse, p->pEList);
- sqlite3VdbeAddOp4(v, OP_OpenEphemeral, distinct, 0, 0,
- (char*)pKeyInfo, P4_KEYINFO_HANDOFF);
+ addrDistinctIndex = sqlite3VdbeAddOp4(v, OP_OpenEphemeral, distinct, 0, 0,
+ (char*)pKeyInfo, P4_KEYINFO_HANDOFF);
sqlite3VdbeChangeP5(v, BTREE_UNORDERED);
}else{
- distinct = -1;
+ distinct = addrDistinctIndex = -1;
}
/* Aggregate and non-aggregate queries are handled differently */
if( !isAgg && pGroupBy==0 ){
- /* This case is for non-aggregate queries
- ** Begin the database scan
- */
- pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pOrderBy, 0);
+ ExprList *pDist = (isDistinct ? p->pEList : 0);
+
+ /* Begin the database scan. */
+ pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pOrderBy, pDist, 0);
if( pWInfo==0 ) goto select_end;
if( pWInfo->nRowOut < p->nSelectRow ) p->nSelectRow = pWInfo->nRowOut;
@@ -91739,14 +98351,56 @@
** into an OP_Noop.
*/
if( addrSortIndex>=0 && pOrderBy==0 ){
- sqlite3VdbeChangeToNoop(v, addrSortIndex, 1);
+ sqlite3VdbeChangeToNoop(v, addrSortIndex);
p->addrOpenEphm[2] = -1;
}
- /* Use the standard inner loop
- */
- assert(!isDistinct);
- selectInnerLoop(pParse, p, pEList, 0, 0, pOrderBy, -1, pDest,
+ if( pWInfo->eDistinct ){
+ VdbeOp *pOp; /* No longer required OpenEphemeral instr. */
+
+ assert( addrDistinctIndex>=0 );
+ pOp = sqlite3VdbeGetOp(v, addrDistinctIndex);
+
+ assert( isDistinct );
+ assert( pWInfo->eDistinct==WHERE_DISTINCT_ORDERED
+ || pWInfo->eDistinct==WHERE_DISTINCT_UNIQUE
+ );
+ distinct = -1;
+ if( pWInfo->eDistinct==WHERE_DISTINCT_ORDERED ){
+ int iJump;
+ int iExpr;
+ int iFlag = ++pParse->nMem;
+ int iBase = pParse->nMem+1;
+ int iBase2 = iBase + pEList->nExpr;
+ pParse->nMem += (pEList->nExpr*2);
+
+ /* Change the OP_OpenEphemeral coded earlier to an OP_Integer. The
+ ** OP_Integer initializes the "first row" flag. */
+ pOp->opcode = OP_Integer;
+ pOp->p1 = 1;
+ pOp->p2 = iFlag;
+
+ sqlite3ExprCodeExprList(pParse, pEList, iBase, 1);
+ iJump = sqlite3VdbeCurrentAddr(v) + 1 + pEList->nExpr + 1 + 1;
+ sqlite3VdbeAddOp2(v, OP_If, iFlag, iJump-1);
+ for(iExpr=0; iExpr<pEList->nExpr; iExpr++){
+ CollSeq *pColl = sqlite3ExprCollSeq(pParse, pEList->a[iExpr].pExpr);
+ sqlite3VdbeAddOp3(v, OP_Ne, iBase+iExpr, iJump, iBase2+iExpr);
+ sqlite3VdbeChangeP4(v, -1, (const char *)pColl, P4_COLLSEQ);
+ sqlite3VdbeChangeP5(v, SQLITE_NULLEQ);
+ }
+ sqlite3VdbeAddOp2(v, OP_Goto, 0, pWInfo->iContinue);
+
+ sqlite3VdbeAddOp2(v, OP_Integer, 0, iFlag);
+ assert( sqlite3VdbeCurrentAddr(v)==iJump );
+ sqlite3VdbeAddOp3(v, OP_Move, iBase, iBase2, pEList->nExpr);
+ }else{
+ pOp->opcode = OP_Noop;
+ }
+ }
+
+ /* Use the standard inner loop. */
+ selectInnerLoop(pParse, p, pEList, 0, 0, pOrderBy, distinct, pDest,
pWInfo->iContinue, pWInfo->iBreak);
/* End the database scan loop.
@@ -91763,6 +98417,8 @@
int iAbortFlag; /* Mem address which causes query abort if positive */
int groupBySort; /* Rows come from source in GROUP BY order */
int addrEnd; /* End of processing for this SELECT */
+ int sortPTab = 0; /* Pseudotable used to decode sorting results */
+ int sortOut = 0; /* Output register from the sorter */
/* Remove any and all aliases between the result set and the
** GROUP BY clause.
@@ -91824,12 +98480,12 @@
/* If there is a GROUP BY clause we might need a sorting index to
** implement it. Allocate that sorting index now. If it turns out
- ** that we do not need it after all, the OpenEphemeral instruction
+ ** that we do not need it after all, the OP_SorterOpen instruction
** will be converted into a Noop.
*/
sAggInfo.sortingIdx = pParse->nTab++;
pKeyInfo = keyInfoFromExprList(pParse, pGroupBy);
- addrSortingIdx = sqlite3VdbeAddOp4(v, OP_OpenEphemeral,
+ addrSortingIdx = sqlite3VdbeAddOp4(v, OP_SorterOpen,
sAggInfo.sortingIdx, sAggInfo.nSortingColumn,
0, (char*)pKeyInfo, P4_KEYINFO_HANDOFF);
@@ -91849,6 +98505,7 @@
VdbeComment((v, "clear abort flag"));
sqlite3VdbeAddOp2(v, OP_Integer, 0, iUseFlag);
VdbeComment((v, "indicate accumulator empty"));
+ sqlite3VdbeAddOp3(v, OP_Null, 0, iAMem, iAMem+pGroupBy->nExpr-1);
/* Begin a loop that will extract all source rows in GROUP BY order.
** This might involve two separate loops with an OP_Sort in between, or
@@ -91856,7 +98513,7 @@
** in the right order to begin with.
*/
sqlite3VdbeAddOp2(v, OP_Gosub, regReset, addrReset);
- pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pGroupBy, 0);
+ pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pGroupBy, 0, 0);
if( pWInfo==0 ) goto select_end;
if( pGroupBy==0 ){
/* The optimizer is able to deliver rows in group by order so
@@ -91910,11 +98567,14 @@
}
regRecord = sqlite3GetTempReg(pParse);
sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nCol, regRecord);
- sqlite3VdbeAddOp2(v, OP_IdxInsert, sAggInfo.sortingIdx, regRecord);
+ sqlite3VdbeAddOp2(v, OP_SorterInsert, sAggInfo.sortingIdx, regRecord);
sqlite3ReleaseTempReg(pParse, regRecord);
sqlite3ReleaseTempRange(pParse, regBase, nCol);
sqlite3WhereEnd(pWInfo);
- sqlite3VdbeAddOp2(v, OP_Sort, sAggInfo.sortingIdx, addrEnd);
+ sAggInfo.sortingIdxPTab = sortPTab = pParse->nTab++;
+ sortOut = sqlite3GetTempReg(pParse);
+ sqlite3VdbeAddOp3(v, OP_OpenPseudo, sortPTab, sortOut, nCol);
+ sqlite3VdbeAddOp2(v, OP_SorterSort, sAggInfo.sortingIdx, addrEnd);
VdbeComment((v, "GROUP BY sort"));
sAggInfo.useSortingIdx = 1;
sqlite3ExprCacheClear(pParse);
@@ -91927,9 +98587,13 @@
*/
addrTopOfLoop = sqlite3VdbeCurrentAddr(v);
sqlite3ExprCacheClear(pParse);
+ if( groupBySort ){
+ sqlite3VdbeAddOp2(v, OP_SorterData, sAggInfo.sortingIdx, sortOut);
+ }
for(j=0; j<pGroupBy->nExpr; j++){
if( groupBySort ){
- sqlite3VdbeAddOp3(v, OP_Column, sAggInfo.sortingIdx, j, iBMem+j);
+ sqlite3VdbeAddOp3(v, OP_Column, sortPTab, j, iBMem+j);
+ if( j==0 ) sqlite3VdbeChangeP5(v, OPFLAG_CLEARCACHE);
}else{
sAggInfo.directMode = 1;
sqlite3ExprCode(pParse, pGroupBy->a[j].pExpr, iBMem+j);
@@ -91968,10 +98632,10 @@
/* End of the loop
*/
if( groupBySort ){
- sqlite3VdbeAddOp2(v, OP_Next, sAggInfo.sortingIdx, addrTopOfLoop);
+ sqlite3VdbeAddOp2(v, OP_SorterNext, sAggInfo.sortingIdx, addrTopOfLoop);
}else{
sqlite3WhereEnd(pWInfo);
- sqlite3VdbeChangeToNoop(v, addrSortingIdx, 1);
+ sqlite3VdbeChangeToNoop(v, addrSortingIdx);
}
/* Output the final row of result
@@ -92050,11 +98714,13 @@
** and pKeyInfo to the KeyInfo structure required to navigate the
** index.
**
+ ** (2011-04-15) Do not do a full scan of an unordered index.
+ **
** In practice the KeyInfo structure will not be used. It is only
** passed to keep OP_OpenRead happy.
*/
for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
- if( !pBest || pIdx->nColumn<pBest->nColumn ){
+ if( pIdx->bUnordered==0 && (!pBest || pIdx->nColumn<pBest->nColumn) ){
pBest = pIdx;
}
}
@@ -92070,6 +98736,7 @@
}
sqlite3VdbeAddOp2(v, OP_Count, iCsr, sAggInfo.aFunc[0].iMem);
sqlite3VdbeAddOp1(v, OP_Close, iCsr);
+ explainSimpleCount(pParse, pTab, pBest);
}else
#endif /* SQLITE_OMIT_BTREECOUNT */
{
@@ -92115,7 +98782,7 @@
** of output.
*/
resetAccumulator(pParse, &sAggInfo);
- pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pMinMax, flag);
+ pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pMinMax, 0, flag);
if( pWInfo==0 ){
sqlite3ExprListDelete(db, pDel);
goto select_end;
@@ -92178,98 +98845,98 @@
return rc;
}
-#if defined(SQLITE_DEBUG)
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
/*
-*******************************************************************************
-** The following code is used for testing and debugging only. The code
-** that follows does not appear in normal builds.
-**
-** These routines are used to print out the content of all or part of a
-** parse structures such as Select or Expr. Such printouts are useful
-** for helping to understand what is happening inside the code generator
-** during the execution of complex SELECT statements.
-**
-** These routine are not called anywhere from within the normal
-** code base. Then are intended to be called from within the debugger
-** or from temporary "printf" statements inserted for debugging.
+** Generate a human-readable description of a the Select object.
*/
-SQLITE_PRIVATE void sqlite3PrintExpr(Expr *p){
- if( !ExprHasProperty(p, EP_IntValue) && p->u.zToken ){
- sqlite3DebugPrintf("(%s", p->u.zToken);
- }else{
- sqlite3DebugPrintf("(%d", p->op);
- }
- if( p->pLeft ){
- sqlite3DebugPrintf(" ");
- sqlite3PrintExpr(p->pLeft);
- }
- if( p->pRight ){
- sqlite3DebugPrintf(" ");
- sqlite3PrintExpr(p->pRight);
- }
- sqlite3DebugPrintf(")");
-}
-SQLITE_PRIVATE void sqlite3PrintExprList(ExprList *pList){
- int i;
- for(i=0; i<pList->nExpr; i++){
- sqlite3PrintExpr(pList->a[i].pExpr);
- if( i<pList->nExpr-1 ){
- sqlite3DebugPrintf(", ");
+static void explainOneSelect(Vdbe *pVdbe, Select *p){
+ sqlite3ExplainPrintf(pVdbe, "SELECT ");
+ if( p->selFlags & (SF_Distinct|SF_Aggregate) ){
+ if( p->selFlags & SF_Distinct ){
+ sqlite3ExplainPrintf(pVdbe, "DISTINCT ");
}
+ if( p->selFlags & SF_Aggregate ){
+ sqlite3ExplainPrintf(pVdbe, "agg_flag ");
+ }
+ sqlite3ExplainNL(pVdbe);
+ sqlite3ExplainPrintf(pVdbe, " ");
}
-}
-SQLITE_PRIVATE void sqlite3PrintSelect(Select *p, int indent){
- sqlite3DebugPrintf("%*sSELECT(%p) ", indent, "", p);
- sqlite3PrintExprList(p->pEList);
- sqlite3DebugPrintf("\n");
- if( p->pSrc ){
- char *zPrefix;
+ sqlite3ExplainExprList(pVdbe, p->pEList);
+ sqlite3ExplainNL(pVdbe);
+ if( p->pSrc && p->pSrc->nSrc ){
int i;
- zPrefix = "FROM";
+ sqlite3ExplainPrintf(pVdbe, "FROM ");
+ sqlite3ExplainPush(pVdbe);
for(i=0; i<p->pSrc->nSrc; i++){
struct SrcList_item *pItem = &p->pSrc->a[i];
- sqlite3DebugPrintf("%*s ", indent+6, zPrefix);
- zPrefix = "";
+ sqlite3ExplainPrintf(pVdbe, "{%d,*} = ", pItem->iCursor);
if( pItem->pSelect ){
- sqlite3DebugPrintf("(\n");
- sqlite3PrintSelect(pItem->pSelect, indent+10);
- sqlite3DebugPrintf("%*s)", indent+8, "");
+ sqlite3ExplainSelect(pVdbe, pItem->pSelect);
+ if( pItem->pTab ){
+ sqlite3ExplainPrintf(pVdbe, " (tabname=%s)", pItem->pTab->zName);
+ }
}else if( pItem->zName ){
- sqlite3DebugPrintf("%s", pItem->zName);
- }
- if( pItem->pTab ){
- sqlite3DebugPrintf("(table: %s)", pItem->pTab->zName);
+ sqlite3ExplainPrintf(pVdbe, "%s", pItem->zName);
}
if( pItem->zAlias ){
- sqlite3DebugPrintf(" AS %s", pItem->zAlias);
+ sqlite3ExplainPrintf(pVdbe, " (AS %s)", pItem->zAlias);
}
- if( i<p->pSrc->nSrc-1 ){
- sqlite3DebugPrintf(",");
+ if( pItem->jointype & JT_LEFT ){
+ sqlite3ExplainPrintf(pVdbe, " LEFT-JOIN");
}
- sqlite3DebugPrintf("\n");
+ sqlite3ExplainNL(pVdbe);
}
+ sqlite3ExplainPop(pVdbe);
}
if( p->pWhere ){
- sqlite3DebugPrintf("%*s WHERE ", indent, "");
- sqlite3PrintExpr(p->pWhere);
- sqlite3DebugPrintf("\n");
+ sqlite3ExplainPrintf(pVdbe, "WHERE ");
+ sqlite3ExplainExpr(pVdbe, p->pWhere);
+ sqlite3ExplainNL(pVdbe);
}
if( p->pGroupBy ){
- sqlite3DebugPrintf("%*s GROUP BY ", indent, "");
- sqlite3PrintExprList(p->pGroupBy);
- sqlite3DebugPrintf("\n");
+ sqlite3ExplainPrintf(pVdbe, "GROUPBY ");
+ sqlite3ExplainExprList(pVdbe, p->pGroupBy);
+ sqlite3ExplainNL(pVdbe);
}
if( p->pHaving ){
- sqlite3DebugPrintf("%*s HAVING ", indent, "");
- sqlite3PrintExpr(p->pHaving);
- sqlite3DebugPrintf("\n");
+ sqlite3ExplainPrintf(pVdbe, "HAVING ");
+ sqlite3ExplainExpr(pVdbe, p->pHaving);
+ sqlite3ExplainNL(pVdbe);
}
if( p->pOrderBy ){
- sqlite3DebugPrintf("%*s ORDER BY ", indent, "");
- sqlite3PrintExprList(p->pOrderBy);
- sqlite3DebugPrintf("\n");
+ sqlite3ExplainPrintf(pVdbe, "ORDERBY ");
+ sqlite3ExplainExprList(pVdbe, p->pOrderBy);
+ sqlite3ExplainNL(pVdbe);
+ }
+ if( p->pLimit ){
+ sqlite3ExplainPrintf(pVdbe, "LIMIT ");
+ sqlite3ExplainExpr(pVdbe, p->pLimit);
+ sqlite3ExplainNL(pVdbe);
+ }
+ if( p->pOffset ){
+ sqlite3ExplainPrintf(pVdbe, "OFFSET ");
+ sqlite3ExplainExpr(pVdbe, p->pOffset);
+ sqlite3ExplainNL(pVdbe);
}
}
+SQLITE_PRIVATE void sqlite3ExplainSelect(Vdbe *pVdbe, Select *p){
+ if( p==0 ){
+ sqlite3ExplainPrintf(pVdbe, "(null-select)");
+ return;
+ }
+ while( p->pPrior ) p = p->pPrior;
+ sqlite3ExplainPush(pVdbe);
+ while( p ){
+ explainOneSelect(pVdbe, p);
+ p = p->pNext;
+ if( p==0 ) break;
+ sqlite3ExplainNL(pVdbe);
+ sqlite3ExplainPrintf(pVdbe, "%s\n", selectOpName(p->op));
+ }
+ sqlite3ExplainPrintf(pVdbe, "END");
+ sqlite3ExplainPop(pVdbe);
+}
+
/* End of the structure debug printing code
*****************************************************************************/
#endif /* defined(SQLITE_TEST) || defined(SQLITE_DEBUG) */
@@ -92294,6 +98961,8 @@
** These routines are in a separate files so that they will not be linked
** if they are not used.
*/
+/* #include <stdlib.h> */
+/* #include <string.h> */
#ifndef SQLITE_OMIT_GET_TABLE
@@ -92528,6 +99197,7 @@
if( pTmpSchema!=pTab->pSchema ){
HashElem *p;
+ assert( sqlite3SchemaMutexHeld(pParse->db, 0, pTmpSchema) );
for(p=sqliteHashFirst(&pTmpSchema->trigHash); p; p=sqliteHashNext(p)){
Trigger *pTrig = (Trigger *)sqliteHashData(p);
if( pTrig->pTabSchema==pTab->pSchema
@@ -92590,15 +99260,28 @@
goto trigger_cleanup;
}
}
+ if( !pTableName || db->mallocFailed ){
+ goto trigger_cleanup;
+ }
+
+ /* A long-standing parser bug is that this syntax was allowed:
+ **
+ ** CREATE TRIGGER attached.demo AFTER INSERT ON attached.tab ....
+ ** ^^^^^^^^
+ **
+ ** To maintain backwards compatibility, ignore the database
+ ** name on pTableName if we are reparsing our of SQLITE_MASTER.
+ */
+ if( db->init.busy && iDb!=1 ){
+ sqlite3DbFree(db, pTableName->a[0].zDatabase);
+ pTableName->a[0].zDatabase = 0;
+ }
/* If the trigger name was unqualified, and the table is a temp table,
** then set iDb to 1 to create the trigger in the temporary database.
** If sqlite3SrcListLookup() returns 0, indicating the table does not
** exist, the error is caught by the block below.
*/
- if( !pTableName || db->mallocFailed ){
- goto trigger_cleanup;
- }
pTab = sqlite3SrcListLookup(pParse, pTableName);
if( db->init.busy==0 && pName2->n==0 && pTab
&& pTab->pSchema==db->aDb[1].pSchema ){
@@ -92639,10 +99322,14 @@
if( !zName || SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){
goto trigger_cleanup;
}
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
if( sqlite3HashFind(&(db->aDb[iDb].pSchema->trigHash),
zName, sqlite3Strlen30(zName)) ){
if( !noErr ){
sqlite3ErrorMsg(pParse, "trigger %T already exists", pName);
+ }else{
+ assert( !db->init.busy );
+ sqlite3CodeVerifySchema(pParse, iDb);
}
goto trigger_cleanup;
}
@@ -92736,7 +99423,6 @@
int iDb; /* Database containing the trigger */
Token nameToken; /* Trigger name for error reporting */
- pTrig = pParse->pNewTrigger;
pParse->pNewTrigger = 0;
if( NEVER(pParse->nErr) || !pTrig ) goto triggerfinish_cleanup;
zName = pTrig->zName;
@@ -92771,14 +99457,14 @@
pTrig->table, z);
sqlite3DbFree(db, z);
sqlite3ChangeCookie(pParse, iDb);
- sqlite3VdbeAddOp4(v, OP_ParseSchema, iDb, 0, 0, sqlite3MPrintf(
- db, "type='trigger' AND name='%q'", zName), P4_DYNAMIC
- );
+ sqlite3VdbeAddParseSchemaOp(v, iDb,
+ sqlite3MPrintf(db, "type='trigger' AND name='%q'", zName));
}
if( db->init.busy ){
Trigger *pLink = pTrig;
Hash *pHash = &db->aDb[iDb].pSchema->trigHash;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
pTrig = sqlite3HashInsert(pHash, zName, sqlite3Strlen30(zName), pTrig);
if( pTrig ){
db->mallocFailed = 1;
@@ -92960,15 +99646,19 @@
zDb = pName->a[0].zDatabase;
zName = pName->a[0].zName;
nName = sqlite3Strlen30(zName);
+ assert( zDb!=0 || sqlite3BtreeHoldsAllMutexes(db) );
for(i=OMIT_TEMPDB; i<db->nDb; i++){
int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */
if( zDb && sqlite3StrICmp(db->aDb[j].zName, zDb) ) continue;
+ assert( sqlite3SchemaMutexHeld(db, j, 0) );
pTrigger = sqlite3HashFind(&(db->aDb[j].pSchema->trigHash), zName, nName);
if( pTrigger ) break;
}
if( !pTrigger ){
if( !noErr ){
sqlite3ErrorMsg(pParse, "no such trigger: %S", pName, 0);
+ }else{
+ sqlite3CodeVerifyNamedSchema(pParse, zDb);
}
pParse->checkSchema = 1;
goto drop_trigger_cleanup;
@@ -93036,7 +99726,7 @@
sqlite3BeginWriteOperation(pParse, 0, iDb);
sqlite3OpenMasterTable(pParse, iDb);
base = sqlite3VdbeAddOpList(v, ArraySize(dropTrigger), dropTrigger);
- sqlite3VdbeChangeP4(v, base+1, pTrigger->zName, 0);
+ sqlite3VdbeChangeP4(v, base+1, pTrigger->zName, P4_TRANSIENT);
sqlite3VdbeChangeP4(v, base+4, "trigger", P4_STATIC);
sqlite3ChangeCookie(pParse, iDb);
sqlite3VdbeAddOp2(v, OP_Close, 0, 0);
@@ -93051,8 +99741,11 @@
** Remove a trigger from the hash tables of the sqlite* pointer.
*/
SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTrigger(sqlite3 *db, int iDb, const char *zName){
- Hash *pHash = &(db->aDb[iDb].pSchema->trigHash);
Trigger *pTrigger;
+ Hash *pHash;
+
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
+ pHash = &(db->aDb[iDb].pSchema->trigHash);
pTrigger = sqlite3HashInsert(pHash, zName, sqlite3Strlen30(zName), 0);
if( ALWAYS(pTrigger) ){
if( pTrigger->pSchema==pTrigger->pTabSchema ){
@@ -93098,8 +99791,12 @@
int *pMask /* OUT: Mask of TRIGGER_BEFORE|TRIGGER_AFTER */
){
int mask = 0;
- Trigger *pList = sqlite3TriggerList(pParse, pTab);
+ Trigger *pList = 0;
Trigger *p;
+
+ if( (pParse->db->flags & SQLITE_EnableTrigger)!=0 ){
+ pList = sqlite3TriggerList(pParse, pTab);
+ }
assert( pList==0 || IsVirtual(pTab)==0 );
for(p=pList; p; p=p->pNext){
if( p->op==op && checkColumnOverlap(p->pColumns, pChanges) ){
@@ -93350,6 +100047,7 @@
}
pProgram->nMem = pSubParse->nMem;
pProgram->nCsr = pSubParse->nTab;
+ pProgram->nOnce = pSubParse->nOnce;
pProgram->token = (void *)pTrigger;
pPrg->aColmask[0] = pSubParse->oldmask;
pPrg->aColmask[1] = pSubParse->newmask;
@@ -93594,7 +100292,8 @@
ExprList *pChanges, /* The columns to change in the UPDATE statement */
Expr *pRowidExpr, /* Expression used to recompute the rowid */
int *aXRef, /* Mapping from columns of pTab to entries in pChanges */
- Expr *pWhere /* WHERE clause of the UPDATE statement */
+ Expr *pWhere, /* WHERE clause of the UPDATE statement */
+ int onError /* ON CONFLICT strategy */
);
#endif /* SQLITE_OMIT_VIRTUALTABLE */
@@ -93696,10 +100395,9 @@
int regRowCount = 0; /* A count of rows changed */
int regOldRowid; /* The old rowid */
int regNewRowid; /* The new rowid */
- int regNew;
- int regOld = 0;
+ int regNew; /* Content of the NEW.* table in triggers */
+ int regOld = 0; /* Content of OLD.* table in triggers */
int regRowSet = 0; /* Rowset of rows to be updated */
- int regRec; /* Register used for new table record to insert */
memset(&sContext, 0, sizeof(sContext));
db = pParse->db;
@@ -93815,7 +100513,7 @@
}
for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
int reg;
- if( chngRowid ){
+ if( hasFK || chngRowid ){
reg = ++pParse->nMem;
}else{
reg = 0;
@@ -93839,7 +100537,7 @@
/* Virtual tables must be handled separately */
if( IsVirtual(pTab) ){
updateVirtualTable(pParse, pTabList, pTab, pChanges, pRowidExpr, aXRef,
- pWhere);
+ pWhere, onError);
pWhere = 0;
pTabList = 0;
goto update_cleanup;
@@ -93847,6 +100545,7 @@
#endif
/* Allocate required registers. */
+ regRowSet = ++pParse->nMem;
regOldRowid = regNewRowid = ++pParse->nMem;
if( pTrigger || hasFK ){
regOld = pParse->nMem + 1;
@@ -93857,7 +100556,6 @@
}
regNew = pParse->nMem + 1;
pParse->nMem += pTab->nCol;
- regRec = ++pParse->nMem;
/* Start the view context. */
if( isView ){
@@ -93882,8 +100580,10 @@
/* Begin the database scan
*/
- sqlite3VdbeAddOp2(v, OP_Null, 0, regOldRowid);
- pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere,0, WHERE_ONEPASS_DESIRED);
+ sqlite3VdbeAddOp3(v, OP_Null, 0, regRowSet, regOldRowid);
+ pWInfo = sqlite3WhereBegin(
+ pParse, pTabList, pWhere, 0, 0, WHERE_ONEPASS_DESIRED
+ );
if( pWInfo==0 ) goto update_cleanup;
okOnePass = pWInfo->okOnePass;
@@ -93891,7 +100591,6 @@
*/
sqlite3VdbeAddOp2(v, OP_Rowid, iCur, regOldRowid);
if( !okOnePass ){
- regRowSet = ++pParse->nMem;
sqlite3VdbeAddOp2(v, OP_RowSetAdd, regRowSet, regOldRowid);
}
@@ -93926,6 +100625,7 @@
}
}
for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
+ assert( aRegIdx );
if( openAll || aRegIdx[i]>0 ){
KeyInfo *pKey = sqlite3IndexKeyinfo(pParse, pIdx);
sqlite3VdbeAddOp4(v, OP_OpenWrite, iCur+i+1, pIdx->tnum, iDb,
@@ -93967,7 +100667,7 @@
pTrigger, pChanges, 0, TRIGGER_BEFORE|TRIGGER_AFTER, pTab, onError
);
for(i=0; i<pTab->nCol; i++){
- if( aXRef[i]<0 || oldmask==0xffffffff || (oldmask & (1<<i)) ){
+ if( aXRef[i]<0 || oldmask==0xffffffff || (i<32 && (oldmask & (1<<i))) ){
sqlite3ExprCodeGetColumnOfTable(v, pTab, iCur, i, regOld+i);
}else{
sqlite3VdbeAddOp2(v, OP_Null, 0, regOld+i);
@@ -93994,9 +100694,10 @@
newmask = sqlite3TriggerColmask(
pParse, pTrigger, pChanges, 1, TRIGGER_BEFORE, pTab, onError
);
+ sqlite3VdbeAddOp3(v, OP_Null, 0, regNew, regNew+pTab->nCol-1);
for(i=0; i<pTab->nCol; i++){
if( i==pTab->iPKey ){
- sqlite3VdbeAddOp2(v, OP_Null, 0, regNew+i);
+ /*sqlite3VdbeAddOp2(v, OP_Null, 0, regNew+i);*/
}else{
j = aXRef[i];
if( j>=0 ){
@@ -94099,6 +100800,7 @@
/* Close all tables */
for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
+ assert( aRegIdx );
if( openAll || aRegIdx[i]>0 ){
sqlite3VdbeAddOp2(v, OP_Close, iCur+i+1, 0);
}
@@ -94170,7 +100872,8 @@
ExprList *pChanges, /* The columns to change in the UPDATE statement */
Expr *pRowid, /* Expression used to recompute the rowid */
int *aXRef, /* Mapping from columns of pTab to entries in pChanges */
- Expr *pWhere /* WHERE clause of the UPDATE statement */
+ Expr *pWhere, /* WHERE clause of the UPDATE statement */
+ int onError /* ON CONFLICT strategy */
){
Vdbe *v = pParse->pVdbe; /* Virtual machine under construction */
ExprList *pEList = 0; /* The result set of the SELECT statement */
@@ -94227,6 +100930,7 @@
}
sqlite3VtabMakeWritable(pParse, pTab);
sqlite3VdbeAddOp4(v, OP_VUpdate, 0, pTab->nCol+2, iReg, pVTab, P4_VTAB);
+ sqlite3VdbeChangeP5(v, onError==OE_Default ? OE_Abort : onError);
sqlite3MayAbort(pParse);
sqlite3VdbeAddOp2(v, OP_Next, ephemTab, addr+1);
sqlite3VdbeJumpHere(v, addr);
@@ -94284,7 +100988,7 @@
return sqlite3_errcode(db);
}
VVA_ONLY( rc = ) sqlite3_step(pStmt);
- assert( rc!=SQLITE_ROW );
+ assert( rc!=SQLITE_ROW || (db->flags&SQLITE_CountRows) );
return vacuumFinalize(db, pStmt, pzErrMsg);
}
@@ -94502,13 +101206,11 @@
);
if( rc ) goto end_of_vacuum;
- /* At this point, unless the main db was completely empty, there is now a
- ** transaction open on the vacuum database, but not on the main database.
- ** Open a btree level transaction on the main database. This allows a
- ** call to sqlite3BtreeCopyFile(). The main database btree level
- ** transaction is then committed, so the SQL level never knows it was
- ** opened for writing. This way, the SQL transaction used to create the
- ** temporary database never needs to be committed.
+ /* At this point, there is a write transaction open on both the
+ ** vacuum database and the main database. Assuming no error occurs,
+ ** both transactions are closed by this block - the main database
+ ** transaction by sqlite3BtreeCopyFile() and the other by an explicit
+ ** call to sqlite3BtreeCommit().
*/
{
u32 meta;
@@ -94574,10 +101276,13 @@
pDb->pSchema = 0;
}
- sqlite3ResetInternalSchema(db, 0);
+ /* This both clears the schemas and reduces the size of the db->aDb[]
+ ** array. */
+ sqlite3ResetInternalSchema(db, -1);
return rc;
}
+
#endif /* SQLITE_OMIT_VACUUM && SQLITE_OMIT_ATTACH */
/************** End of vacuum.c **********************************************/
@@ -94598,6 +101303,18 @@
#ifndef SQLITE_OMIT_VIRTUALTABLE
/*
+** Before a virtual table xCreate() or xConnect() method is invoked, the
+** sqlite3.pVtabCtx member variable is set to point to an instance of
+** this struct allocated on the stack. It is used by the implementation of
+** the sqlite3_declare_vtab() and sqlite3_vtab_config() APIs, both of which
+** are invoked only from within xCreate and xConnect methods.
+*/
+struct VtabCtx {
+ Table *pTab;
+ VTable *pVTable;
+};
+
+/*
** The actual function that does the work of creating a new module.
** This function implements the sqlite3_create_module() and
** sqlite3_create_module_v2() interfaces.
@@ -94625,13 +101342,13 @@
pMod->xDestroy = xDestroy;
pDel = (Module *)sqlite3HashInsert(&db->aModule, zCopy, nName, (void*)pMod);
if( pDel && pDel->xDestroy ){
+ sqlite3ResetInternalSchema(db, -1);
pDel->xDestroy(pDel->pAux);
}
sqlite3DbFree(db, pDel);
if( pDel==pMod ){
db->mallocFailed = 1;
}
- sqlite3ResetInternalSchema(db, 0);
}else if( xDestroy ){
xDestroy(pAux);
}
@@ -94728,10 +101445,9 @@
** that contains table p is held by the caller. See header comments
** above function sqlite3VtabUnlockList() for an explanation of why
** this makes it safe to access the sqlite3.pDisconnect list of any
- ** database connection that may have an entry in the p->pVTable list. */
- assert( db==0 ||
- sqlite3BtreeHoldsMutex(db->aDb[sqlite3SchemaToIndex(db, p->pSchema)].pBt)
- );
+ ** database connection that may have an entry in the p->pVTable list.
+ */
+ assert( db==0 || sqlite3SchemaMutexHeld(db, 0, p->pSchema) );
while( pVTable ){
sqlite3 *db2 = pVTable->db;
@@ -94955,7 +101671,7 @@
sqlite3VdbeAddOp2(v, OP_Expire, 0, 0);
zWhere = sqlite3MPrintf(db, "name='%q' AND type='table'", pTab->zName);
- sqlite3VdbeAddOp4(v, OP_ParseSchema, iDb, 1, 0, zWhere, P4_DYNAMIC);
+ sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere);
sqlite3VdbeAddOp4(v, OP_VCreate, iDb, 0, 0,
pTab->zName, sqlite3Strlen30(pTab->zName) + 1);
}
@@ -94970,6 +101686,7 @@
Schema *pSchema = pTab->pSchema;
const char *zName = pTab->zName;
int nName = sqlite3Strlen30(zName);
+ assert( sqlite3SchemaMutexHeld(db, 0, pSchema) );
pOld = sqlite3HashInsert(&pSchema->tblHash, zName, nName, pTab);
if( pOld ){
db->mallocFailed = 1;
@@ -95017,6 +101734,7 @@
int (*xConstruct)(sqlite3*,void*,int,const char*const*,sqlite3_vtab**,char**),
char **pzErr
){
+ VtabCtx sCtx;
VTable *pVTable;
int rc;
const char *const*azArg = (const char *const*)pTab->azModuleArg;
@@ -95036,12 +101754,14 @@
pVTable->db = db;
pVTable->pMod = pMod;
- assert( !db->pVTab );
- assert( xConstruct );
- db->pVTab = pTab;
-
/* Invoke the virtual table constructor */
+ assert( &db->pVtabCtx );
+ assert( xConstruct );
+ sCtx.pTab = pTab;
+ sCtx.pVTable = pVTable;
+ db->pVtabCtx = &sCtx;
rc = xConstruct(db, pMod->pAux, nArg, azArg, &pVTable->pVtab, &zErr);
+ db->pVtabCtx = 0;
if( rc==SQLITE_NOMEM ) db->mallocFailed = 1;
if( SQLITE_OK!=rc ){
@@ -95057,7 +101777,7 @@
** the sqlite3_vtab object if successful. */
pVTable->pVtab->pModule = pMod->pModule;
pVTable->nRef = 1;
- if( db->pVTab ){
+ if( sCtx.pTab ){
const char *zFormat = "vtable constructor did not declare schema: %s";
*pzErr = sqlite3MPrintf(db, zFormat, pTab->zName);
sqlite3VtabUnlock(pVTable);
@@ -95105,7 +101825,6 @@
}
sqlite3DbFree(db, zModuleName);
- db->pVTab = 0;
return rc;
}
@@ -95146,11 +101865,11 @@
return rc;
}
-
/*
-** Add the virtual table pVTab to the array sqlite3.aVTrans[].
+** Grow the db->aVTrans[] array so that there is room for at least one
+** more v-table. Return SQLITE_NOMEM if a malloc fails, or SQLITE_OK otherwise.
*/
-static int addToVTrans(sqlite3 *db, VTable *pVTab){
+static int growVTrans(sqlite3 *db){
const int ARRAY_INCR = 5;
/* Grow the sqlite3.aVTrans array if required */
@@ -95165,10 +101884,17 @@
db->aVTrans = aVTrans;
}
+ return SQLITE_OK;
+}
+
+/*
+** Add the virtual table pVTab to the array sqlite3.aVTrans[]. Space should
+** have already been reserved using growVTrans().
+*/
+static void addToVTrans(sqlite3 *db, VTable *pVTab){
/* Add pVtab to the end of sqlite3.aVTrans */
db->aVTrans[db->nVTrans++] = pVTab;
sqlite3VtabLock(pVTab);
- return SQLITE_OK;
}
/*
@@ -95206,7 +101932,10 @@
/* Justification of ALWAYS(): The xConstructor method is required to
** create a valid sqlite3_vtab if it returns SQLITE_OK. */
if( rc==SQLITE_OK && ALWAYS(sqlite3GetVTable(db, pTab)) ){
- rc = addToVTrans(db, sqlite3GetVTable(db, pTab));
+ rc = growVTrans(db);
+ if( rc==SQLITE_OK ){
+ addToVTrans(db, sqlite3GetVTable(db, pTab));
+ }
}
return rc;
@@ -95225,8 +101954,7 @@
char *zErr = 0;
sqlite3_mutex_enter(db->mutex);
- pTab = db->pVTab;
- if( !pTab ){
+ if( !db->pVtabCtx || !(pTab = db->pVtabCtx->pTab) ){
sqlite3Error(db, SQLITE_MISUSE, 0);
sqlite3_mutex_leave(db->mutex);
return SQLITE_MISUSE_BKPT;
@@ -95253,7 +101981,7 @@
pParse->pNewTable->nCol = 0;
pParse->pNewTable->aCol = 0;
}
- db->pVTab = 0;
+ db->pVtabCtx->pTab = 0;
}else{
sqlite3Error(db, SQLITE_ERROR, (zErr ? "%s" : 0), zErr);
sqlite3DbFree(db, zErr);
@@ -95323,6 +102051,7 @@
x = *(int (**)(sqlite3_vtab *))((char *)p->pModule + offset);
if( x ) x(p);
}
+ pVTab->iSavepoint = 0;
sqlite3VtabUnlock(pVTab);
}
sqlite3DbFree(db, db->aVTrans);
@@ -95405,7 +102134,6 @@
if( pModule->xBegin ){
int i;
-
/* If pVtab is already in the aVTrans array, return early */
for(i=0; i<db->nVTrans; i++){
if( db->aVTrans[i]==pVTab ){
@@ -95413,10 +102141,62 @@
}
}
- /* Invoke the xBegin method */
- rc = pModule->xBegin(pVTab->pVtab);
+ /* Invoke the xBegin method. If successful, add the vtab to the
+ ** sqlite3.aVTrans[] array. */
+ rc = growVTrans(db);
if( rc==SQLITE_OK ){
- rc = addToVTrans(db, pVTab);
+ rc = pModule->xBegin(pVTab->pVtab);
+ if( rc==SQLITE_OK ){
+ addToVTrans(db, pVTab);
+ }
+ }
+ }
+ return rc;
+}
+
+/*
+** Invoke either the xSavepoint, xRollbackTo or xRelease method of all
+** virtual tables that currently have an open transaction. Pass iSavepoint
+** as the second argument to the virtual table method invoked.
+**
+** If op is SAVEPOINT_BEGIN, the xSavepoint method is invoked. If it is
+** SAVEPOINT_ROLLBACK, the xRollbackTo method. Otherwise, if op is
+** SAVEPOINT_RELEASE, then the xRelease method of each virtual table with
+** an open transaction is invoked.
+**
+** If any virtual table method returns an error code other than SQLITE_OK,
+** processing is abandoned and the error returned to the caller of this
+** function immediately. If all calls to virtual table methods are successful,
+** SQLITE_OK is returned.
+*/
+SQLITE_PRIVATE int sqlite3VtabSavepoint(sqlite3 *db, int op, int iSavepoint){
+ int rc = SQLITE_OK;
+
+ assert( op==SAVEPOINT_RELEASE||op==SAVEPOINT_ROLLBACK||op==SAVEPOINT_BEGIN );
+ assert( iSavepoint>=0 );
+ if( db->aVTrans ){
+ int i;
+ for(i=0; rc==SQLITE_OK && i<db->nVTrans; i++){
+ VTable *pVTab = db->aVTrans[i];
+ const sqlite3_module *pMod = pVTab->pMod->pModule;
+ if( pVTab->pVtab && pMod->iVersion>=2 ){
+ int (*xMethod)(sqlite3_vtab *, int);
+ switch( op ){
+ case SAVEPOINT_BEGIN:
+ xMethod = pMod->xSavepoint;
+ pVTab->iSavepoint = iSavepoint+1;
+ break;
+ case SAVEPOINT_ROLLBACK:
+ xMethod = pMod->xRollbackTo;
+ break;
+ default:
+ xMethod = pMod->xRelease;
+ break;
+ }
+ if( xMethod && pVTab->iSavepoint>iSavepoint ){
+ rc = xMethod(pVTab->pVtab, iSavepoint);
+ }
+ }
}
}
return rc;
@@ -95520,6 +102300,57 @@
}
}
+/*
+** Return the ON CONFLICT resolution mode in effect for the virtual
+** table update operation currently in progress.
+**
+** The results of this routine are undefined unless it is called from
+** within an xUpdate method.
+*/
+SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *db){
+ static const unsigned char aMap[] = {
+ SQLITE_ROLLBACK, SQLITE_ABORT, SQLITE_FAIL, SQLITE_IGNORE, SQLITE_REPLACE
+ };
+ assert( OE_Rollback==1 && OE_Abort==2 && OE_Fail==3 );
+ assert( OE_Ignore==4 && OE_Replace==5 );
+ assert( db->vtabOnConflict>=1 && db->vtabOnConflict<=5 );
+ return (int)aMap[db->vtabOnConflict-1];
+}
+
+/*
+** Call from within the xCreate() or xConnect() methods to provide
+** the SQLite core with additional information about the behavior
+** of the virtual table being implemented.
+*/
+SQLITE_API int sqlite3_vtab_config(sqlite3 *db, int op, ...){
+ va_list ap;
+ int rc = SQLITE_OK;
+
+ sqlite3_mutex_enter(db->mutex);
+
+ va_start(ap, op);
+ switch( op ){
+ case SQLITE_VTAB_CONSTRAINT_SUPPORT: {
+ VtabCtx *p = db->pVtabCtx;
+ if( !p ){
+ rc = SQLITE_MISUSE_BKPT;
+ }else{
+ assert( p->pTab==0 || (p->pTab->tabFlags & TF_Virtual)!=0 );
+ p->pVTable->bConstraint = (u8)va_arg(ap, int);
+ }
+ break;
+ }
+ default:
+ rc = SQLITE_MISUSE_BKPT;
+ break;
+ }
+ va_end(ap);
+
+ if( rc!=SQLITE_OK ) sqlite3Error(db, rc, 0);
+ sqlite3_mutex_leave(db->mutex);
+ return rc;
+}
+
#endif /* SQLITE_OMIT_VIRTUALTABLE */
/************** End of vtab.c ************************************************/
@@ -95543,6 +102374,7 @@
** indices, you might also think of this module as the "query optimizer".
*/
+
/*
** Trace output macros
*/
@@ -95642,16 +102474,31 @@
#define TERM_ORINFO 0x10 /* Need to free the WhereTerm.u.pOrInfo object */
#define TERM_ANDINFO 0x20 /* Need to free the WhereTerm.u.pAndInfo obj */
#define TERM_OR_OK 0x40 /* Used during OR-clause processing */
+#ifdef SQLITE_ENABLE_STAT3
+# define TERM_VNULL 0x80 /* Manufactured x>NULL or x<=NULL term */
+#else
+# define TERM_VNULL 0x00 /* Disabled if not using stat3 */
+#endif
/*
** An instance of the following structure holds all information about a
** WHERE clause. Mostly this is a container for one or more WhereTerms.
+**
+** Explanation of pOuter: For a WHERE clause of the form
+**
+** a AND ((b AND c) OR (d AND e)) AND f
+**
+** There are separate WhereClause objects for the whole clause and for
+** the subclauses "(b AND c)" and "(d AND e)". The pOuter field of the
+** subclauses points to the WhereClause object for the whole clause.
*/
struct WhereClause {
Parse *pParse; /* The parser context */
WhereMaskSet *pMaskSet; /* Mapping of table cursor numbers to bitmasks */
Bitmask vmask; /* Bitmask identifying virtual table cursors */
+ WhereClause *pOuter; /* Outer conjunction */
u8 op; /* Split operator. TK_AND or TK_OR */
+ u16 wctrlFlags; /* Might include WHERE_AND_ONLY */
int nTerm; /* Number of terms */
int nSlot; /* Number of entries in a[] */
WhereTerm *a; /* Each a[] describes a term of the WHERE cluase */
@@ -95735,6 +102582,7 @@
#define WO_ISNULL 0x080
#define WO_OR 0x100 /* Two or more OR-connected terms */
#define WO_AND 0x200 /* Two or more AND-connected terms */
+#define WO_NOOP 0x800 /* This term does not restrict search space */
#define WO_ALL 0xfff /* Mask of all possible WO_* values */
#define WO_SINGLE 0x0ff /* Mask of all non-compound WO_* values */
@@ -95771,6 +102619,7 @@
#define WHERE_VIRTUALTABLE 0x08000000 /* Use virtual-table processing */
#define WHERE_MULTI_OR 0x10000000 /* OR using multiple indices */
#define WHERE_TEMP_INDEX 0x20000000 /* Uses an ephemeral index */
+#define WHERE_DISTINCT 0x40000000 /* Correct order for DISTINCT */
/*
** Initialize a preallocated WhereClause structure.
@@ -95778,14 +102627,17 @@
static void whereClauseInit(
WhereClause *pWC, /* The WhereClause to be initialized */
Parse *pParse, /* The parsing context */
- WhereMaskSet *pMaskSet /* Mapping from table cursor numbers to bitmasks */
+ WhereMaskSet *pMaskSet, /* Mapping from table cursor numbers to bitmasks */
+ u16 wctrlFlags /* Might include WHERE_AND_ONLY */
){
pWC->pParse = pParse;
pWC->pMaskSet = pMaskSet;
+ pWC->pOuter = 0;
pWC->nTerm = 0;
pWC->nSlot = ArraySize(pWC->aStatic);
pWC->a = pWC->aStatic;
pWC->vmask = 0;
+ pWC->wctrlFlags = wctrlFlags;
}
/* Forward reference */
@@ -95917,7 +102769,7 @@
*/
static Bitmask getMask(WhereMaskSet *pMaskSet, int iCursor){
int i;
- assert( pMaskSet->n<=sizeof(Bitmask)*8 );
+ assert( pMaskSet->n<=(int)sizeof(Bitmask)*8 );
for(i=0; i<pMaskSet->n; i++){
if( pMaskSet->ix[i]==iCursor ){
return ((Bitmask)1)<<i;
@@ -95984,11 +102836,19 @@
static Bitmask exprSelectTableUsage(WhereMaskSet *pMaskSet, Select *pS){
Bitmask mask = 0;
while( pS ){
+ SrcList *pSrc = pS->pSrc;
mask |= exprListTableUsage(pMaskSet, pS->pEList);
mask |= exprListTableUsage(pMaskSet, pS->pGroupBy);
mask |= exprListTableUsage(pMaskSet, pS->pOrderBy);
mask |= exprTableUsage(pMaskSet, pS->pWhere);
mask |= exprTableUsage(pMaskSet, pS->pHaving);
+ if( ALWAYS(pSrc!=0) ){
+ int i;
+ for(i=0; i<pSrc->nSrc; i++){
+ mask |= exprSelectTableUsage(pMaskSet, pSrc->a[i].pSelect);
+ mask |= exprTableUsage(pMaskSet, pSrc->a[i].pOn);
+ }
+ }
pS = pS->pPrior;
}
return mask;
@@ -96093,36 +102953,38 @@
int k;
assert( iCur>=0 );
op &= WO_ALL;
- for(pTerm=pWC->a, k=pWC->nTerm; k; k--, pTerm++){
- if( pTerm->leftCursor==iCur
- && (pTerm->prereqRight & notReady)==0
- && pTerm->u.leftColumn==iColumn
- && (pTerm->eOperator & op)!=0
- ){
- if( pIdx && pTerm->eOperator!=WO_ISNULL ){
- Expr *pX = pTerm->pExpr;
- CollSeq *pColl;
- char idxaff;
- int j;
- Parse *pParse = pWC->pParse;
-
- idxaff = pIdx->pTable->aCol[iColumn].affinity;
- if( !sqlite3IndexAffinityOk(pX, idxaff) ) continue;
-
- /* Figure out the collation sequence required from an index for
- ** it to be useful for optimising expression pX. Store this
- ** value in variable pColl.
- */
- assert(pX->pLeft);
- pColl = sqlite3BinaryCompareCollSeq(pParse, pX->pLeft, pX->pRight);
- assert(pColl || pParse->nErr);
-
- for(j=0; pIdx->aiColumn[j]!=iColumn; j++){
- if( NEVER(j>=pIdx->nColumn) ) return 0;
+ for(; pWC; pWC=pWC->pOuter){
+ for(pTerm=pWC->a, k=pWC->nTerm; k; k--, pTerm++){
+ if( pTerm->leftCursor==iCur
+ && (pTerm->prereqRight & notReady)==0
+ && pTerm->u.leftColumn==iColumn
+ && (pTerm->eOperator & op)!=0
+ ){
+ if( iColumn>=0 && pIdx && pTerm->eOperator!=WO_ISNULL ){
+ Expr *pX = pTerm->pExpr;
+ CollSeq *pColl;
+ char idxaff;
+ int j;
+ Parse *pParse = pWC->pParse;
+
+ idxaff = pIdx->pTable->aCol[iColumn].affinity;
+ if( !sqlite3IndexAffinityOk(pX, idxaff) ) continue;
+
+ /* Figure out the collation sequence required from an index for
+ ** it to be useful for optimising expression pX. Store this
+ ** value in variable pColl.
+ */
+ assert(pX->pLeft);
+ pColl = sqlite3BinaryCompareCollSeq(pParse, pX->pLeft, pX->pRight);
+ assert(pColl || pParse->nErr);
+
+ for(j=0; pIdx->aiColumn[j]!=iColumn; j++){
+ if( NEVER(j>=pIdx->nColumn) ) return 0;
+ }
+ if( pColl && sqlite3StrICmp(pColl->zName, pIdx->azColl[j]) ) continue;
}
- if( pColl && sqlite3StrICmp(pColl->zName, pIdx->azColl[j]) ) continue;
+ return pTerm;
}
- return pTerm;
}
}
return 0;
@@ -96199,7 +103061,7 @@
if( pVal && sqlite3_value_type(pVal)==SQLITE_TEXT ){
z = (char *)sqlite3_value_text(pVal);
}
- sqlite3VdbeSetVarmask(pParse->pVdbe, iCol); /* IMP: R-23257-02778 */
+ sqlite3VdbeSetVarmask(pParse->pVdbe, iCol);
assert( pRight->op==TK_VARIABLE || pRight->op==TK_REGISTER );
}else if( op==TK_STRING ){
z = pRight->u.zToken;
@@ -96217,7 +103079,7 @@
*ppPrefix = pPrefix;
if( op==TK_VARIABLE ){
Vdbe *v = pParse->pVdbe;
- sqlite3VdbeSetVarmask(v, pRight->iColumn); /* IMP: R-23257-02778 */
+ sqlite3VdbeSetVarmask(v, pRight->iColumn);
if( *pisComplete && pRight->u.zToken[1] ){
/* If the rhs of the LIKE expression is a variable, and the current
** value of the variable means there is no need to invoke the LIKE
@@ -96386,7 +103248,7 @@
if( pOrInfo==0 ) return;
pTerm->wtFlags |= TERM_ORINFO;
pOrWc = &pOrInfo->wc;
- whereClauseInit(pOrWc, pWC->pParse, pMaskSet);
+ whereClauseInit(pOrWc, pWC->pParse, pMaskSet, pWC->wctrlFlags);
whereSplit(pOrWc, pExpr, TK_OR);
exprAnalyzeAll(pSrc, pOrWc);
if( db->mallocFailed ) return;
@@ -96413,9 +103275,10 @@
pOrTerm->wtFlags |= TERM_ANDINFO;
pOrTerm->eOperator = WO_AND;
pAndWC = &pAndInfo->wc;
- whereClauseInit(pAndWC, pWC->pParse, pMaskSet);
+ whereClauseInit(pAndWC, pWC->pParse, pMaskSet, pWC->wctrlFlags);
whereSplit(pAndWC, pOrTerm->pExpr, TK_AND);
exprAnalyzeAll(pSrc, pAndWC);
+ pAndWC->pOuter = pWC;
testcase( db->mallocFailed );
if( !db->mallocFailed ){
for(j=0, pAndTerm=pAndWC->a; j<pAndWC->nTerm; j++, pAndTerm++){
@@ -96585,7 +103448,7 @@
}else{
sqlite3ExprListDelete(db, pList);
}
- pTerm->eOperator = 0; /* case 1 trumps case 2 */
+ pTerm->eOperator = WO_NOOP; /* case 1 trumps case 2 */
}
}
}
@@ -96849,6 +103712,47 @@
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */
+#ifdef SQLITE_ENABLE_STAT3
+ /* When sqlite_stat3 histogram data is available an operator of the
+ ** form "x IS NOT NULL" can sometimes be evaluated more efficiently
+ ** as "x>NULL" if x is not an INTEGER PRIMARY KEY. So construct a
+ ** virtual term of that form.
+ **
+ ** Note that the virtual term must be tagged with TERM_VNULL. This
+ ** TERM_VNULL tag will suppress the not-null check at the beginning
+ ** of the loop. Without the TERM_VNULL flag, the not-null check at
+ ** the start of the loop will prevent any results from being returned.
+ */
+ if( pExpr->op==TK_NOTNULL
+ && pExpr->pLeft->op==TK_COLUMN
+ && pExpr->pLeft->iColumn>=0
+ ){
+ Expr *pNewExpr;
+ Expr *pLeft = pExpr->pLeft;
+ int idxNew;
+ WhereTerm *pNewTerm;
+
+ pNewExpr = sqlite3PExpr(pParse, TK_GT,
+ sqlite3ExprDup(db, pLeft, 0),
+ sqlite3PExpr(pParse, TK_NULL, 0, 0, 0), 0);
+
+ idxNew = whereClauseInsert(pWC, pNewExpr,
+ TERM_VIRTUAL|TERM_DYNAMIC|TERM_VNULL);
+ if( idxNew ){
+ pNewTerm = &pWC->a[idxNew];
+ pNewTerm->prereqRight = 0;
+ pNewTerm->leftCursor = pLeft->iTable;
+ pNewTerm->u.leftColumn = pLeft->iColumn;
+ pNewTerm->eOperator = WO_GT;
+ pNewTerm->iParent = idxTerm;
+ pTerm = &pWC->a[idxTerm];
+ pTerm->nChild = 1;
+ pTerm->wtFlags |= TERM_COPIED;
+ pNewTerm->prereqAll = pTerm->prereqAll;
+ }
+ }
+#endif /* SQLITE_ENABLE_STAT */
+
/* Prevent ON clause terms of a LEFT JOIN from being used to drive
** an index for tables to the left of the join.
*/
@@ -96874,6 +103778,162 @@
return 0;
}
+/*
+** This function searches the expression list passed as the second argument
+** for an expression of type TK_COLUMN that refers to the same column and
+** uses the same collation sequence as the iCol'th column of index pIdx.
+** Argument iBase is the cursor number used for the table that pIdx refers
+** to.
+**
+** If such an expression is found, its index in pList->a[] is returned. If
+** no expression is found, -1 is returned.
+*/
+static int findIndexCol(
+ Parse *pParse, /* Parse context */
+ ExprList *pList, /* Expression list to search */
+ int iBase, /* Cursor for table associated with pIdx */
+ Index *pIdx, /* Index to match column of */
+ int iCol /* Column of index to match */
+){
+ int i;
+ const char *zColl = pIdx->azColl[iCol];
+
+ for(i=0; i<pList->nExpr; i++){
+ Expr *p = pList->a[i].pExpr;
+ if( p->op==TK_COLUMN
+ && p->iColumn==pIdx->aiColumn[iCol]
+ && p->iTable==iBase
+ ){
+ CollSeq *pColl = sqlite3ExprCollSeq(pParse, p);
+ if( ALWAYS(pColl) && 0==sqlite3StrICmp(pColl->zName, zColl) ){
+ return i;
+ }
+ }
+ }
+
+ return -1;
+}
+
+/*
+** This routine determines if pIdx can be used to assist in processing a
+** DISTINCT qualifier. In other words, it tests whether or not using this
+** index for the outer loop guarantees that rows with equal values for
+** all expressions in the pDistinct list are delivered grouped together.
+**
+** For example, the query
+**
+** SELECT DISTINCT a, b, c FROM tbl WHERE a = ?
+**
+** can benefit from any index on columns "b" and "c".
+*/
+static int isDistinctIndex(
+ Parse *pParse, /* Parsing context */
+ WhereClause *pWC, /* The WHERE clause */
+ Index *pIdx, /* The index being considered */
+ int base, /* Cursor number for the table pIdx is on */
+ ExprList *pDistinct, /* The DISTINCT expressions */
+ int nEqCol /* Number of index columns with == */
+){
+ Bitmask mask = 0; /* Mask of unaccounted for pDistinct exprs */
+ int i; /* Iterator variable */
+
+ if( pIdx->zName==0 || pDistinct==0 || pDistinct->nExpr>=BMS ) return 0;
+ testcase( pDistinct->nExpr==BMS-1 );
+
+ /* Loop through all the expressions in the distinct list. If any of them
+ ** are not simple column references, return early. Otherwise, test if the
+ ** WHERE clause contains a "col=X" clause. If it does, the expression
+ ** can be ignored. If it does not, and the column does not belong to the
+ ** same table as index pIdx, return early. Finally, if there is no
+ ** matching "col=X" expression and the column is on the same table as pIdx,
+ ** set the corresponding bit in variable mask.
+ */
+ for(i=0; i<pDistinct->nExpr; i++){
+ WhereTerm *pTerm;
+ Expr *p = pDistinct->a[i].pExpr;
+ if( p->op!=TK_COLUMN ) return 0;
+ pTerm = findTerm(pWC, p->iTable, p->iColumn, ~(Bitmask)0, WO_EQ, 0);
+ if( pTerm ){
+ Expr *pX = pTerm->pExpr;
+ CollSeq *p1 = sqlite3BinaryCompareCollSeq(pParse, pX->pLeft, pX->pRight);
+ CollSeq *p2 = sqlite3ExprCollSeq(pParse, p);
+ if( p1==p2 ) continue;
+ }
+ if( p->iTable!=base ) return 0;
+ mask |= (((Bitmask)1) << i);
+ }
+
+ for(i=nEqCol; mask && i<pIdx->nColumn; i++){
+ int iExpr = findIndexCol(pParse, pDistinct, base, pIdx, i);
+ if( iExpr<0 ) break;
+ mask &= ~(((Bitmask)1) << iExpr);
+ }
+
+ return (mask==0);
+}
+
+
+/*
+** Return true if the DISTINCT expression-list passed as the third argument
+** is redundant. A DISTINCT list is redundant if the database contains a
+** UNIQUE index that guarantees that the result of the query will be distinct
+** anyway.
+*/
+static int isDistinctRedundant(
+ Parse *pParse,
+ SrcList *pTabList,
+ WhereClause *pWC,
+ ExprList *pDistinct
+){
+ Table *pTab;
+ Index *pIdx;
+ int i;
+ int iBase;
+
+ /* If there is more than one table or sub-select in the FROM clause of
+ ** this query, then it will not be possible to show that the DISTINCT
+ ** clause is redundant. */
+ if( pTabList->nSrc!=1 ) return 0;
+ iBase = pTabList->a[0].iCursor;
+ pTab = pTabList->a[0].pTab;
+
+ /* If any of the expressions is an IPK column on table iBase, then return
+ ** true. Note: The (p->iTable==iBase) part of this test may be false if the
+ ** current SELECT is a correlated sub-query.
+ */
+ for(i=0; i<pDistinct->nExpr; i++){
+ Expr *p = pDistinct->a[i].pExpr;
+ if( p->op==TK_COLUMN && p->iTable==iBase && p->iColumn<0 ) return 1;
+ }
+
+ /* Loop through all indices on the table, checking each to see if it makes
+ ** the DISTINCT qualifier redundant. It does so if:
+ **
+ ** 1. The index is itself UNIQUE, and
+ **
+ ** 2. All of the columns in the index are either part of the pDistinct
+ ** list, or else the WHERE clause contains a term of the form "col=X",
+ ** where X is a constant value. The collation sequences of the
+ ** comparison and select-list expressions must match those of the index.
+ */
+ for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
+ if( pIdx->onError==OE_None ) continue;
+ for(i=0; i<pIdx->nColumn; i++){
+ int iCol = pIdx->aiColumn[i];
+ if( 0==findTerm(pWC, iBase, iCol, ~(Bitmask)0, WO_EQ, pIdx)
+ && 0>findIndexCol(pParse, pDistinct, iBase, pIdx, i)
+ ){
+ break;
+ }
+ }
+ if( i==pIdx->nColumn ){
+ /* This index implies that the DISTINCT qualifier is redundant. */
+ return 1;
+ }
+ }
+
+ return 0;
+}
/*
** This routine decides if pIdx can be used to satisfy the ORDER BY
@@ -96901,6 +103961,7 @@
int base, /* Cursor number for the table to be sorted */
ExprList *pOrderBy, /* The ORDER BY clause */
int nEqCol, /* Number of index columns with == constraints */
+ int wsFlags, /* Index usages flags */
int *pbRev /* Set to 1 if ORDER BY is DESC */
){
int i, j; /* Loop counters */
@@ -96909,7 +103970,10 @@
struct ExprList_item *pTerm; /* A term of the ORDER BY clause */
sqlite3 *db = pParse->db;
- assert( pOrderBy!=0 );
+ if( !pOrderBy ) return 0;
+ if( wsFlags & WHERE_COLUMN_IN ) return 0;
+ if( pIdx->bUnordered ) return 0;
+
nTerm = pOrderBy->nExpr;
assert( nTerm>0 );
@@ -97006,11 +104070,14 @@
return 1;
}
if( pIdx->onError!=OE_None && i==pIdx->nColumn
+ && (wsFlags & WHERE_COLUMN_NULL)==0
&& !referencesOtherTables(pOrderBy, pMaskSet, j, base) ){
/* All terms of this index match some prefix of the ORDER BY clause
** and the index is UNIQUE and no terms on the tail of the ORDER BY
** clause reference other tables in a join. If this is all true then
- ** the order by clause is superfluous. */
+ ** the order by clause is superfluous. Not that if the matching
+ ** condition is IS NULL then the result is not necessarily unique
+ ** even on a UNIQUE index, so disallow those cases. */
return 1;
}
return 0;
@@ -97106,11 +104173,14 @@
WhereTerm * const pWCEnd = &pWC->a[pWC->nTerm]; /* End of pWC->a[] */
WhereTerm *pTerm; /* A single term of the WHERE clause */
- /* No OR-clause optimization allowed if the INDEXED BY or NOT INDEXED clauses
- ** are used */
+ /* The OR-clause optimization is disallowed if the INDEXED BY or
+ ** NOT INDEXED clauses are used or if the WHERE_AND_ONLY bit is set. */
if( pSrc->notIndexed || pSrc->pIndex!=0 ){
return;
}
+ if( pWC->wctrlFlags & WHERE_AND_ONLY ){
+ return;
+ }
/* Search the WHERE clause terms for a usable WO_OR term. */
for(pTerm=pWC->a; pTerm<pWCEnd; pTerm++){
@@ -97138,8 +104208,10 @@
WhereClause tempWC;
tempWC.pParse = pWC->pParse;
tempWC.pMaskSet = pWC->pMaskSet;
+ tempWC.pOuter = pWC;
tempWC.op = TK_AND;
tempWC.a = pOrTerm;
+ tempWC.wctrlFlags = 0;
tempWC.nTerm = 1;
bestIndex(pParse, &tempWC, pSrc, notReady, notValid, 0, &sTermCost);
}else{
@@ -97219,6 +104291,10 @@
WhereTerm *pWCEnd; /* End of pWC->a[] */
Table *pTable; /* Table tht might be indexed */
+ if( pParse->nQueryLoop<=(double)1 ){
+ /* There is no point in building an automatic index for a single scan */
+ return;
+ }
if( (pParse->db->flags & SQLITE_AutoIndex)==0 ){
/* Automatic indices are disabled at run-time */
return;
@@ -97231,6 +104307,10 @@
/* The NOT INDEXED clause appears in the SQL. */
return;
}
+ if( pSrc->isCorrelated ){
+ /* The source is a correlated sub-query. No point in indexing it. */
+ return;
+ }
assert( pParse->nQueryLoop >= (double)1 );
pTable = pSrc->pTab;
@@ -97247,7 +104327,7 @@
pWCEnd = &pWC->a[pWC->nTerm];
for(pTerm=pWC->a; pTerm<pWCEnd; pTerm++){
if( termCanDriveIndex(pTerm, pSrc, notReady) ){
- WHERETRACE(("auto-index reduces cost from %.2f to %.2f\n",
+ WHERETRACE(("auto-index reduces cost from %.1f to %.1f\n",
pCost->rCost, costTempIdx));
pCost->rCost = costTempIdx;
pCost->plan.nRow = logN + 1;
@@ -97281,7 +104361,6 @@
int nByte; /* Byte of memory needed for pIdx */
Index *pIdx; /* Object describing the transient index */
Vdbe *v; /* Prepared statement under construction */
- int regIsInit; /* Register set by initialization */
int addrInit; /* Address of the initialization bypass jump */
Table *pTable; /* The table being indexed */
KeyInfo *pKeyinfo; /* Key information for the index */
@@ -97298,9 +104377,7 @@
** transient index on 2nd and subsequent iterations of the loop. */
v = pParse->pVdbe;
assert( v!=0 );
- regIsInit = ++pParse->nMem;
- addrInit = sqlite3VdbeAddOp1(v, OP_If, regIsInit);
- sqlite3VdbeAddOp2(v, OP_Integer, 1, regIsInit);
+ addrInit = sqlite3CodeOnce(pParse);
/* Count the number of columns that will be added to the index
** and used to match WHERE clause constraints */
@@ -97368,7 +104445,7 @@
idxCols |= cMask;
pIdx->aiColumn[n] = pTerm->u.leftColumn;
pColl = sqlite3BinaryCompareCollSeq(pParse, pX->pLeft, pX->pRight);
- pIdx->azColl[n] = pColl->zName;
+ pIdx->azColl[n] = ALWAYS(pColl) ? pColl->zName : "BINARY";
n++;
}
}
@@ -97447,6 +104524,7 @@
testcase( pTerm->eOperator==WO_IN );
testcase( pTerm->eOperator==WO_ISNULL );
if( pTerm->eOperator & (WO_IN|WO_ISNULL) ) continue;
+ if( pTerm->wtFlags & TERM_VNULL ) continue;
nTerm++;
}
@@ -97497,6 +104575,7 @@
testcase( pTerm->eOperator==WO_IN );
testcase( pTerm->eOperator==WO_ISNULL );
if( pTerm->eOperator & (WO_IN|WO_ISNULL) ) continue;
+ if( pTerm->wtFlags & TERM_VNULL ) continue;
pIdxCons[j].iColumn = pTerm->u.leftColumn;
pIdxCons[j].iTermOffset = i;
pIdxCons[j].op = (u8)pTerm->eOperator;
@@ -97723,48 +104802,85 @@
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */
+#ifdef SQLITE_ENABLE_STAT3
/*
-** Argument pIdx is a pointer to an index structure that has an array of
-** SQLITE_INDEX_SAMPLES evenly spaced samples of the first indexed column
-** stored in Index.aSample. The domain of values stored in said column
-** may be thought of as divided into (SQLITE_INDEX_SAMPLES+1) regions.
-** Region 0 contains all values smaller than the first sample value. Region
-** 1 contains values larger than or equal to the value of the first sample,
-** but smaller than the value of the second. And so on.
+** Estimate the location of a particular key among all keys in an
+** index. Store the results in aStat as follows:
**
-** If successful, this function determines which of the regions value
-** pVal lies in, sets *piRegion to the region index (a value between 0
-** and SQLITE_INDEX_SAMPLES+1, inclusive) and returns SQLITE_OK.
-** Or, if an OOM occurs while converting text values between encodings,
-** SQLITE_NOMEM is returned and *piRegion is undefined.
+** aStat[0] Est. number of rows less than pVal
+** aStat[1] Est. number of rows equal to pVal
+**
+** Return SQLITE_OK on success.
*/
-#ifdef SQLITE_ENABLE_STAT2
-static int whereRangeRegion(
+static int whereKeyStats(
Parse *pParse, /* Database connection */
Index *pIdx, /* Index to consider domain of */
sqlite3_value *pVal, /* Value to consider */
- int *piRegion /* OUT: Region of domain in which value lies */
+ int roundUp, /* Round up if true. Round down if false */
+ tRowcnt *aStat /* OUT: stats written here */
){
- if( ALWAYS(pVal) ){
- IndexSample *aSample = pIdx->aSample;
- int i = 0;
- int eType = sqlite3_value_type(pVal);
+ tRowcnt n;
+ IndexSample *aSample;
+ int i, eType;
+ int isEq = 0;
+ i64 v;
+ double r, rS;
- if( eType==SQLITE_INTEGER || eType==SQLITE_FLOAT ){
- double r = sqlite3_value_double(pVal);
- for(i=0; i<SQLITE_INDEX_SAMPLES; i++){
- if( aSample[i].eType==SQLITE_NULL ) continue;
- if( aSample[i].eType>=SQLITE_TEXT || aSample[i].u.r>r ) break;
+ assert( roundUp==0 || roundUp==1 );
+ assert( pIdx->nSample>0 );
+ if( pVal==0 ) return SQLITE_ERROR;
+ n = pIdx->aiRowEst[0];
+ aSample = pIdx->aSample;
+ eType = sqlite3_value_type(pVal);
+
+ if( eType==SQLITE_INTEGER ){
+ v = sqlite3_value_int64(pVal);
+ r = (i64)v;
+ for(i=0; i<pIdx->nSample; i++){
+ if( aSample[i].eType==SQLITE_NULL ) continue;
+ if( aSample[i].eType>=SQLITE_TEXT ) break;
+ if( aSample[i].eType==SQLITE_INTEGER ){
+ if( aSample[i].u.i>=v ){
+ isEq = aSample[i].u.i==v;
+ break;
+ }
+ }else{
+ assert( aSample[i].eType==SQLITE_FLOAT );
+ if( aSample[i].u.r>=r ){
+ isEq = aSample[i].u.r==r;
+ break;
+ }
}
- }else{
+ }
+ }else if( eType==SQLITE_FLOAT ){
+ r = sqlite3_value_double(pVal);
+ for(i=0; i<pIdx->nSample; i++){
+ if( aSample[i].eType==SQLITE_NULL ) continue;
+ if( aSample[i].eType>=SQLITE_TEXT ) break;
+ if( aSample[i].eType==SQLITE_FLOAT ){
+ rS = aSample[i].u.r;
+ }else{
+ rS = aSample[i].u.i;
+ }
+ if( rS>=r ){
+ isEq = rS==r;
+ break;
+ }
+ }
+ }else if( eType==SQLITE_NULL ){
+ i = 0;
+ if( aSample[0].eType==SQLITE_NULL ) isEq = 1;
+ }else{
+ assert( eType==SQLITE_TEXT || eType==SQLITE_BLOB );
+ for(i=0; i<pIdx->nSample; i++){
+ if( aSample[i].eType==SQLITE_TEXT || aSample[i].eType==SQLITE_BLOB ){
+ break;
+ }
+ }
+ if( i<pIdx->nSample ){
sqlite3 *db = pParse->db;
CollSeq *pColl;
const u8 *z;
- int n;
-
- /* pVal comes from sqlite3ValueFromExpr() so the type cannot be NULL */
- assert( eType==SQLITE_TEXT || eType==SQLITE_BLOB );
-
if( eType==SQLITE_BLOB ){
z = (const u8 *)sqlite3_value_blob(pVal);
pColl = db->pDfltColl;
@@ -97783,12 +104899,12 @@
assert( z && pColl && pColl->xCmp );
}
n = sqlite3ValueBytes(pVal, pColl->enc);
-
- for(i=0; i<SQLITE_INDEX_SAMPLES; i++){
- int r;
+
+ for(; i<pIdx->nSample; i++){
+ int c;
int eSampletype = aSample[i].eType;
- if( eSampletype==SQLITE_NULL || eSampletype<eType ) continue;
- if( (eSampletype!=eType) ) break;
+ if( eSampletype<eType ) continue;
+ if( eSampletype!=eType ) break;
#ifndef SQLITE_OMIT_UTF16
if( pColl->enc!=SQLITE_UTF8 ){
int nSample;
@@ -97799,23 +104915,54 @@
assert( db->mallocFailed );
return SQLITE_NOMEM;
}
- r = pColl->xCmp(pColl->pUser, nSample, zSample, n, z);
+ c = pColl->xCmp(pColl->pUser, nSample, zSample, n, z);
sqlite3DbFree(db, zSample);
}else
#endif
{
- r = pColl->xCmp(pColl->pUser, aSample[i].nByte, aSample[i].u.z, n, z);
+ c = pColl->xCmp(pColl->pUser, aSample[i].nByte, aSample[i].u.z, n, z);
}
- if( r>0 ) break;
+ if( c>=0 ){
+ if( c==0 ) isEq = 1;
+ break;
+ }
}
}
+ }
- assert( i>=0 && i<=SQLITE_INDEX_SAMPLES );
- *piRegion = i;
+ /* At this point, aSample[i] is the first sample that is greater than
+ ** or equal to pVal. Or if i==pIdx->nSample, then all samples are less
+ ** than pVal. If aSample[i]==pVal, then isEq==1.
+ */
+ if( isEq ){
+ assert( i<pIdx->nSample );
+ aStat[0] = aSample[i].nLt;
+ aStat[1] = aSample[i].nEq;
+ }else{
+ tRowcnt iLower, iUpper, iGap;
+ if( i==0 ){
+ iLower = 0;
+ iUpper = aSample[0].nLt;
+ }else{
+ iUpper = i>=pIdx->nSample ? n : aSample[i].nLt;
+ iLower = aSample[i-1].nEq + aSample[i-1].nLt;
+ }
+ aStat[1] = pIdx->avgEq;
+ if( iLower>=iUpper ){
+ iGap = 0;
+ }else{
+ iGap = iUpper - iLower;
+ }
+ if( roundUp ){
+ iGap = (iGap*2)/3;
+ }else{
+ iGap = iGap/3;
+ }
+ aStat[0] = iLower + iGap;
}
return SQLITE_OK;
}
-#endif /* #ifdef SQLITE_ENABLE_STAT2 */
+#endif /* SQLITE_ENABLE_STAT3 */
/*
** If expression pExpr represents a literal value, set *pp to point to
@@ -97833,7 +104980,7 @@
**
** If an error occurs, return an error code. Otherwise, SQLITE_OK.
*/
-#ifdef SQLITE_ENABLE_STAT2
+#ifdef SQLITE_ENABLE_STAT3
static int valueFromExpr(
Parse *pParse,
Expr *pExpr,
@@ -97844,7 +104991,7 @@
|| (pExpr->op==TK_REGISTER && pExpr->op2==TK_VARIABLE)
){
int iVar = pExpr->iColumn;
- sqlite3VdbeSetVarmask(pParse->pVdbe, iVar); /* IMP: R-23257-02778 */
+ sqlite3VdbeSetVarmask(pParse->pVdbe, iVar);
*pp = sqlite3VdbeGetValue(pParse->pReprepare, iVar, aff);
return SQLITE_OK;
}
@@ -97881,17 +105028,15 @@
**
** then nEq should be passed 0.
**
-** The returned value is an integer between 1 and 100, inclusive. A return
-** value of 1 indicates that the proposed range scan is expected to visit
-** approximately 1/100th (1%) of the rows selected by the nEq equality
-** constraints (if any). A return value of 100 indicates that it is expected
-** that the range scan will visit every row (100%) selected by the equality
-** constraints.
+** The returned value is an integer divisor to reduce the estimated
+** search space. A return value of 1 means that range constraints are
+** no help at all. A return value of 2 means range constraints are
+** expected to reduce the search space by half. And so forth...
**
-** In the absence of sqlite_stat2 ANALYZE data, each range inequality
-** reduces the search space by 2/3rds. Hence a single constraint (x>?)
-** results in a return of 33 and a range constraint (x>? AND x<?) results
-** in a return of 11.
+** In the absence of sqlite_stat3 ANALYZE data, each range inequality
+** reduces the search space by a factor of 4. Hence a single constraint (x>?)
+** results in a return of 4 and a range constraint (x>? AND x<?) results
+** in a return of 16.
*/
static int whereRangeScanEst(
Parse *pParse, /* Parsing & code generating context */
@@ -97899,81 +105044,167 @@
int nEq, /* index into p->aCol[] of the range-compared column */
WhereTerm *pLower, /* Lower bound on the range. ex: "x>123" Might be NULL */
WhereTerm *pUpper, /* Upper bound on the range. ex: "x<455" Might be NULL */
- int *piEst /* OUT: Return value */
+ double *pRangeDiv /* OUT: Reduce search space by this divisor */
){
int rc = SQLITE_OK;
-#ifdef SQLITE_ENABLE_STAT2
+#ifdef SQLITE_ENABLE_STAT3
- if( nEq==0 && p->aSample ){
- sqlite3_value *pLowerVal = 0;
- sqlite3_value *pUpperVal = 0;
- int iEst;
- int iLower = 0;
- int iUpper = SQLITE_INDEX_SAMPLES;
+ if( nEq==0 && p->nSample ){
+ sqlite3_value *pRangeVal;
+ tRowcnt iLower = 0;
+ tRowcnt iUpper = p->aiRowEst[0];
+ tRowcnt a[2];
u8 aff = p->pTable->aCol[p->aiColumn[0]].affinity;
if( pLower ){
Expr *pExpr = pLower->pExpr->pRight;
- rc = valueFromExpr(pParse, pExpr, aff, &pLowerVal);
+ rc = valueFromExpr(pParse, pExpr, aff, &pRangeVal);
+ assert( pLower->eOperator==WO_GT || pLower->eOperator==WO_GE );
+ if( rc==SQLITE_OK
+ && whereKeyStats(pParse, p, pRangeVal, 0, a)==SQLITE_OK
+ ){
+ iLower = a[0];
+ if( pLower->eOperator==WO_GT ) iLower += a[1];
+ }
+ sqlite3ValueFree(pRangeVal);
}
if( rc==SQLITE_OK && pUpper ){
Expr *pExpr = pUpper->pExpr->pRight;
- rc = valueFromExpr(pParse, pExpr, aff, &pUpperVal);
- }
-
- if( rc!=SQLITE_OK || (pLowerVal==0 && pUpperVal==0) ){
- sqlite3ValueFree(pLowerVal);
- sqlite3ValueFree(pUpperVal);
- goto range_est_fallback;
- }else if( pLowerVal==0 ){
- rc = whereRangeRegion(pParse, p, pUpperVal, &iUpper);
- if( pLower ) iLower = iUpper/2;
- }else if( pUpperVal==0 ){
- rc = whereRangeRegion(pParse, p, pLowerVal, &iLower);
- if( pUpper ) iUpper = (iLower + SQLITE_INDEX_SAMPLES + 1)/2;
- }else{
- rc = whereRangeRegion(pParse, p, pUpperVal, &iUpper);
- if( rc==SQLITE_OK ){
- rc = whereRangeRegion(pParse, p, pLowerVal, &iLower);
+ rc = valueFromExpr(pParse, pExpr, aff, &pRangeVal);
+ assert( pUpper->eOperator==WO_LT || pUpper->eOperator==WO_LE );
+ if( rc==SQLITE_OK
+ && whereKeyStats(pParse, p, pRangeVal, 1, a)==SQLITE_OK
+ ){
+ iUpper = a[0];
+ if( pUpper->eOperator==WO_LE ) iUpper += a[1];
}
+ sqlite3ValueFree(pRangeVal);
}
-
- iEst = iUpper - iLower;
- testcase( iEst==SQLITE_INDEX_SAMPLES );
- assert( iEst<=SQLITE_INDEX_SAMPLES );
- if( iEst<1 ){
- iEst = 1;
+ if( rc==SQLITE_OK ){
+ if( iUpper<=iLower ){
+ *pRangeDiv = (double)p->aiRowEst[0];
+ }else{
+ *pRangeDiv = (double)p->aiRowEst[0]/(double)(iUpper - iLower);
+ }
+ WHERETRACE(("range scan regions: %u..%u div=%g\n",
+ (u32)iLower, (u32)iUpper, *pRangeDiv));
+ return SQLITE_OK;
}
-
- sqlite3ValueFree(pLowerVal);
- sqlite3ValueFree(pUpperVal);
- *piEst = (iEst * 100)/SQLITE_INDEX_SAMPLES;
- return rc;
}
-range_est_fallback:
#else
UNUSED_PARAMETER(pParse);
UNUSED_PARAMETER(p);
UNUSED_PARAMETER(nEq);
#endif
assert( pLower || pUpper );
- if( pLower && pUpper ){
- *piEst = 11;
- }else{
- *piEst = 33;
- }
+ *pRangeDiv = (double)1;
+ if( pLower && (pLower->wtFlags & TERM_VNULL)==0 ) *pRangeDiv *= (double)4;
+ if( pUpper ) *pRangeDiv *= (double)4;
return rc;
}
+#ifdef SQLITE_ENABLE_STAT3
+/*
+** Estimate the number of rows that will be returned based on
+** an equality constraint x=VALUE and where that VALUE occurs in
+** the histogram data. This only works when x is the left-most
+** column of an index and sqlite_stat3 histogram data is available
+** for that index. When pExpr==NULL that means the constraint is
+** "x IS NULL" instead of "x=VALUE".
+**
+** Write the estimated row count into *pnRow and return SQLITE_OK.
+** If unable to make an estimate, leave *pnRow unchanged and return
+** non-zero.
+**
+** This routine can fail if it is unable to load a collating sequence
+** required for string comparison, or if unable to allocate memory
+** for a UTF conversion required for comparison. The error is stored
+** in the pParse structure.
+*/
+static int whereEqualScanEst(
+ Parse *pParse, /* Parsing & code generating context */
+ Index *p, /* The index whose left-most column is pTerm */
+ Expr *pExpr, /* Expression for VALUE in the x=VALUE constraint */
+ double *pnRow /* Write the revised row estimate here */
+){
+ sqlite3_value *pRhs = 0; /* VALUE on right-hand side of pTerm */
+ u8 aff; /* Column affinity */
+ int rc; /* Subfunction return code */
+ tRowcnt a[2]; /* Statistics */
+
+ assert( p->aSample!=0 );
+ assert( p->nSample>0 );
+ aff = p->pTable->aCol[p->aiColumn[0]].affinity;
+ if( pExpr ){
+ rc = valueFromExpr(pParse, pExpr, aff, &pRhs);
+ if( rc ) goto whereEqualScanEst_cancel;
+ }else{
+ pRhs = sqlite3ValueNew(pParse->db);
+ }
+ if( pRhs==0 ) return SQLITE_NOTFOUND;
+ rc = whereKeyStats(pParse, p, pRhs, 0, a);
+ if( rc==SQLITE_OK ){
+ WHERETRACE(("equality scan regions: %d\n", (int)a[1]));
+ *pnRow = a[1];
+ }
+whereEqualScanEst_cancel:
+ sqlite3ValueFree(pRhs);
+ return rc;
+}
+#endif /* defined(SQLITE_ENABLE_STAT3) */
+
+#ifdef SQLITE_ENABLE_STAT3
+/*
+** Estimate the number of rows that will be returned based on
+** an IN constraint where the right-hand side of the IN operator
+** is a list of values. Example:
+**
+** WHERE x IN (1,2,3,4)
+**
+** Write the estimated row count into *pnRow and return SQLITE_OK.
+** If unable to make an estimate, leave *pnRow unchanged and return
+** non-zero.
+**
+** This routine can fail if it is unable to load a collating sequence
+** required for string comparison, or if unable to allocate memory
+** for a UTF conversion required for comparison. The error is stored
+** in the pParse structure.
+*/
+static int whereInScanEst(
+ Parse *pParse, /* Parsing & code generating context */
+ Index *p, /* The index whose left-most column is pTerm */
+ ExprList *pList, /* The value list on the RHS of "x IN (v1,v2,v3,...)" */
+ double *pnRow /* Write the revised row estimate here */
+){
+ int rc = SQLITE_OK; /* Subfunction return code */
+ double nEst; /* Number of rows for a single term */
+ double nRowEst = (double)0; /* New estimate of the number of rows */
+ int i; /* Loop counter */
+
+ assert( p->aSample!=0 );
+ for(i=0; rc==SQLITE_OK && i<pList->nExpr; i++){
+ nEst = p->aiRowEst[0];
+ rc = whereEqualScanEst(pParse, p, pList->a[i].pExpr, &nEst);
+ nRowEst += nEst;
+ }
+ if( rc==SQLITE_OK ){
+ if( nRowEst > p->aiRowEst[0] ) nRowEst = p->aiRowEst[0];
+ *pnRow = nRowEst;
+ WHERETRACE(("IN row estimate: est=%g\n", nRowEst));
+ }
+ return rc;
+}
+#endif /* defined(SQLITE_ENABLE_STAT3) */
+
/*
-** Find the query plan for accessing a particular table. Write the
+** Find the best query plan for accessing a particular table. Write the
** best query plan and its cost into the WhereCost object supplied as the
** last parameter.
**
** The lowest cost plan wins. The cost is an estimate of the amount of
-** CPU and disk I/O need to process the request using the selected plan.
+** CPU and disk I/O needed to process the requested result.
** Factors that influence cost include:
**
** * The estimated number of rows that will be retrieved. (The
@@ -97992,7 +105223,7 @@
**
** If a NOT INDEXED clause (pSrc->notIndexed!=0) was attached to the table
** in the SELECT statement, then no indexes are considered. However, the
-** selected plan may still take advantage of the tables built-in rowid
+** selected plan may still take advantage of the built-in rowid primary key
** index.
*/
static void bestBtreeIndex(
@@ -98002,6 +105233,7 @@
Bitmask notReady, /* Mask of cursors not available for indexing */
Bitmask notValid, /* Cursors not available for any purpose */
ExprList *pOrderBy, /* The ORDER BY clause */
+ ExprList *pDistinct, /* The select-list if query is DISTINCT */
WhereCost *pCost /* Lowest cost query plan */
){
int iCur = pSrc->iCursor; /* The cursor of the table to be accessed */
@@ -98010,7 +105242,7 @@
int eqTermMask; /* Current mask of valid equality operators */
int idxEqTermMask; /* Index mask of valid equality operators */
Index sPk; /* A fake index object for the primary key */
- unsigned int aiRowEstPk[2]; /* The aiRowEst[] value for the sPk index */
+ tRowcnt aiRowEstPk[2]; /* The aiRowEst[] value for the sPk index */
int aiColumnPk = -1; /* The aColumn[] value for the sPk index */
int wsFlagMask; /* Allowed flags in pCost->plan.wsFlag */
@@ -98035,9 +105267,11 @@
wsFlagMask = ~(WHERE_ROWID_EQ|WHERE_ROWID_RANGE);
eqTermMask = idxEqTermMask;
}else{
- /* There is no INDEXED BY clause. Create a fake Index object to
- ** represent the primary key */
- Index *pFirst; /* Any other index on the table */
+ /* There is no INDEXED BY clause. Create a fake Index object in local
+ ** variable sPk to represent the rowid primary key index. Make this
+ ** fake index the first in a chain of Index objects with all of the real
+ ** indices to follow */
+ Index *pFirst; /* First of real indices on the table */
memset(&sPk, 0, sizeof(Index));
sPk.nColumn = 1;
sPk.aiColumn = &aiColumnPk;
@@ -98048,6 +105282,8 @@
aiRowEstPk[1] = 1;
pFirst = pSrc->pTab->pIndex;
if( pSrc->notIndexed==0 ){
+ /* The real indices of the table are only considered if the
+ ** NOT INDEXED qualifier is omitted from the FROM clause */
sPk.pNext = pFirst;
}
pProbe = &sPk;
@@ -98061,19 +105297,22 @@
/* Loop over all indices looking for the best one to use
*/
for(; pProbe; pIdx=pProbe=pProbe->pNext){
- const unsigned int * const aiRowEst = pProbe->aiRowEst;
+ const tRowcnt * const aiRowEst = pProbe->aiRowEst;
double cost; /* Cost of using pProbe */
double nRow; /* Estimated number of rows in result set */
+ double log10N = (double)1; /* base-10 logarithm of nRow (inexact) */
int rev; /* True to scan in reverse order */
int wsFlags = 0;
Bitmask used = 0;
/* The following variables are populated based on the properties of
- ** scan being evaluated. They are then used to determine the expected
+ ** index being evaluated. They are then used to determine the expected
** cost and number of rows returned.
**
** nEq:
** Number of equality terms that can be implemented using the index.
+ ** In other words, the number of initial fields in the index that
+ ** are used in == or IN or NOT NULL constraints of the WHERE clause.
**
** nInMul:
** The "in-multiplier". This is an estimate of how many seek operations
@@ -98097,16 +105336,16 @@
**
** bInEst:
** Set to true if there was at least one "x IN (SELECT ...)" term used
- ** in determining the value of nInMul.
+ ** in determining the value of nInMul. Note that the RHS of the
+ ** IN operator must be a SELECT, not a value list, for this variable
+ ** to be true.
**
- ** estBound:
- ** An estimate on the amount of the table that must be searched. A
- ** value of 100 means the entire table is searched. Range constraints
- ** might reduce this to a value less than 100 to indicate that only
- ** a fraction of the table needs searching. In the absence of
- ** sqlite_stat2 ANALYZE data, a single inequality reduces the search
- ** space to 1/3rd its original size. So an x>? constraint reduces
- ** estBound to 33. Two constraints (x>? AND x<?) reduce estBound to 11.
+ ** rangeDiv:
+ ** An estimate of a divisor by which to reduce the search space due
+ ** to inequality constraints. In the absence of sqlite_stat3 ANALYZE
+ ** data, a single inequality reduces the search space to 1/4rd its
+ ** original size (rangeDiv==4). Two inequalities reduce the search
+ ** space to 1/16th of its original size (rangeDiv==16).
**
** bSort:
** Boolean. True if there is an ORDER BY clause that will require an
@@ -98114,25 +105353,32 @@
** correctly order records).
**
** bLookup:
- ** Boolean. True if for each index entry visited a lookup on the
- ** corresponding table b-tree is required. This is always false
- ** for the rowid index. For other indexes, it is true unless all the
- ** columns of the table used by the SELECT statement are present in
- ** the index (such an index is sometimes described as a covering index).
+ ** Boolean. True if a table lookup is required for each index entry
+ ** visited. In other words, true if this is not a covering index.
+ ** This is always false for the rowid primary key index of a table.
+ ** For other indexes, it is true unless all the columns of the table
+ ** used by the SELECT statement are present in the index (such an
+ ** index is sometimes described as a covering index).
** For example, given the index on (a, b), the second of the following
- ** two queries requires table b-tree lookups, but the first does not.
+ ** two queries requires table b-tree lookups in order to find the value
+ ** of column c, but the first does not because columns a and b are
+ ** both available in the index.
**
** SELECT a, b FROM tbl WHERE a = 1;
** SELECT a, b, c FROM tbl WHERE a = 1;
*/
- int nEq;
- int bInEst = 0;
- int nInMul = 1;
- int estBound = 100;
- int nBound = 0; /* Number of range constraints seen */
- int bSort = 0;
- int bLookup = 0;
- WhereTerm *pTerm; /* A single term of the WHERE clause */
+ int nEq; /* Number of == or IN terms matching index */
+ int bInEst = 0; /* True if "x IN (SELECT...)" seen */
+ int nInMul = 1; /* Number of distinct equalities to lookup */
+ double rangeDiv = (double)1; /* Estimated reduction in search space */
+ int nBound = 0; /* Number of range constraints seen */
+ int bSort = !!pOrderBy; /* True if external sort required */
+ int bDist = !!pDistinct; /* True if index cannot help with DISTINCT */
+ int bLookup = 0; /* True if not a covering index */
+ WhereTerm *pTerm; /* A single term of the WHERE clause */
+#ifdef SQLITE_ENABLE_STAT3
+ WhereTerm *pFirstTerm = 0; /* First term matching the index */
+#endif
/* Determine the values of nEq and nInMul */
for(nEq=0; nEq<pProbe->nColumn; nEq++){
@@ -98140,61 +105386,82 @@
pTerm = findTerm(pWC, iCur, j, notReady, eqTermMask, pIdx);
if( pTerm==0 ) break;
wsFlags |= (WHERE_COLUMN_EQ|WHERE_ROWID_EQ);
+ testcase( pTerm->pWC!=pWC );
if( pTerm->eOperator & WO_IN ){
Expr *pExpr = pTerm->pExpr;
wsFlags |= WHERE_COLUMN_IN;
if( ExprHasProperty(pExpr, EP_xIsSelect) ){
+ /* "x IN (SELECT ...)": Assume the SELECT returns 25 rows */
nInMul *= 25;
bInEst = 1;
- }else if( ALWAYS(pExpr->x.pList) ){
- nInMul *= pExpr->x.pList->nExpr + 1;
+ }else if( ALWAYS(pExpr->x.pList && pExpr->x.pList->nExpr) ){
+ /* "x IN (value, value, ...)" */
+ nInMul *= pExpr->x.pList->nExpr;
}
}else if( pTerm->eOperator & WO_ISNULL ){
wsFlags |= WHERE_COLUMN_NULL;
}
+#ifdef SQLITE_ENABLE_STAT3
+ if( nEq==0 && pProbe->aSample ) pFirstTerm = pTerm;
+#endif
used |= pTerm->prereqRight;
}
-
- /* Determine the value of estBound. */
- if( nEq<pProbe->nColumn ){
- int j = pProbe->aiColumn[nEq];
+
+ /* If the index being considered is UNIQUE, and there is an equality
+ ** constraint for all columns in the index, then this search will find
+ ** at most a single row. In this case set the WHERE_UNIQUE flag to
+ ** indicate this to the caller.
+ **
+ ** Otherwise, if the search may find more than one row, test to see if
+ ** there is a range constraint on indexed column (nEq+1) that can be
+ ** optimized using the index.
+ */
+ if( nEq==pProbe->nColumn && pProbe->onError!=OE_None ){
+ testcase( wsFlags & WHERE_COLUMN_IN );
+ testcase( wsFlags & WHERE_COLUMN_NULL );
+ if( (wsFlags & (WHERE_COLUMN_IN|WHERE_COLUMN_NULL))==0 ){
+ wsFlags |= WHERE_UNIQUE;
+ }
+ }else if( pProbe->bUnordered==0 ){
+ int j = (nEq==pProbe->nColumn ? -1 : pProbe->aiColumn[nEq]);
if( findTerm(pWC, iCur, j, notReady, WO_LT|WO_LE|WO_GT|WO_GE, pIdx) ){
WhereTerm *pTop = findTerm(pWC, iCur, j, notReady, WO_LT|WO_LE, pIdx);
WhereTerm *pBtm = findTerm(pWC, iCur, j, notReady, WO_GT|WO_GE, pIdx);
- whereRangeScanEst(pParse, pProbe, nEq, pBtm, pTop, &estBound);
+ whereRangeScanEst(pParse, pProbe, nEq, pBtm, pTop, &rangeDiv);
if( pTop ){
nBound = 1;
wsFlags |= WHERE_TOP_LIMIT;
used |= pTop->prereqRight;
+ testcase( pTop->pWC!=pWC );
}
if( pBtm ){
nBound++;
wsFlags |= WHERE_BTM_LIMIT;
used |= pBtm->prereqRight;
+ testcase( pBtm->pWC!=pWC );
}
wsFlags |= (WHERE_COLUMN_RANGE|WHERE_ROWID_RANGE);
}
- }else if( pProbe->onError!=OE_None ){
- testcase( wsFlags & WHERE_COLUMN_IN );
- testcase( wsFlags & WHERE_COLUMN_NULL );
- if( (wsFlags & (WHERE_COLUMN_IN|WHERE_COLUMN_NULL))==0 ){
- wsFlags |= WHERE_UNIQUE;
- }
}
/* If there is an ORDER BY clause and the index being considered will
** naturally scan rows in the required order, set the appropriate flags
** in wsFlags. Otherwise, if there is an ORDER BY clause but the index
** will scan rows in a different order, set the bSort variable. */
- if( pOrderBy ){
- if( (wsFlags & (WHERE_COLUMN_IN|WHERE_COLUMN_NULL))==0
- && isSortingIndex(pParse,pWC->pMaskSet,pProbe,iCur,pOrderBy,nEq,&rev)
- ){
- wsFlags |= WHERE_ROWID_RANGE|WHERE_COLUMN_RANGE|WHERE_ORDERBY;
- wsFlags |= (rev ? WHERE_REVERSE : 0);
- }else{
- bSort = 1;
- }
+ if( isSortingIndex(
+ pParse, pWC->pMaskSet, pProbe, iCur, pOrderBy, nEq, wsFlags, &rev)
+ ){
+ bSort = 0;
+ wsFlags |= WHERE_ROWID_RANGE|WHERE_COLUMN_RANGE|WHERE_ORDERBY;
+ wsFlags |= (rev ? WHERE_REVERSE : 0);
+ }
+
+ /* If there is a DISTINCT qualifier and this index will scan rows in
+ ** order of the DISTINCT expressions, clear bDist and set the appropriate
+ ** flags in wsFlags. */
+ if( isDistinctIndex(pParse, pWC, pProbe, iCur, pDistinct, nEq) ){
+ bDist = 0;
+ wsFlags |= WHERE_ROWID_RANGE|WHERE_COLUMN_RANGE|WHERE_DISTINCT;
}
/* If currently calculating the cost of using an index (not the IPK
@@ -98219,8 +105486,8 @@
}
/*
- ** Estimate the number of rows of output. For an IN operator,
- ** do not let the estimate exceed half the rows in the table.
+ ** Estimate the number of rows of output. For an "x IN (SELECT...)"
+ ** constraint, do not let the estimate exceed half the rows in the table.
*/
nRow = (double)(aiRowEst[nEq] * nInMul);
if( bInEst && nRow*2>aiRowEst[0] ){
@@ -98228,31 +105495,96 @@
nInMul = (int)(nRow / aiRowEst[nEq]);
}
- /* Assume constant cost to access a row and logarithmic cost to
- ** do a binary search. Hence, the initial cost is the number of output
- ** rows plus log2(table-size) times the number of binary searches.
+#ifdef SQLITE_ENABLE_STAT3
+ /* If the constraint is of the form x=VALUE or x IN (E1,E2,...)
+ ** and we do not think that values of x are unique and if histogram
+ ** data is available for column x, then it might be possible
+ ** to get a better estimate on the number of rows based on
+ ** VALUE and how common that value is according to the histogram.
*/
- cost = nRow + nInMul*estLog(aiRowEst[0]);
+ if( nRow>(double)1 && nEq==1 && pFirstTerm!=0 && aiRowEst[1]>1 ){
+ assert( (pFirstTerm->eOperator & (WO_EQ|WO_ISNULL|WO_IN))!=0 );
+ if( pFirstTerm->eOperator & (WO_EQ|WO_ISNULL) ){
+ testcase( pFirstTerm->eOperator==WO_EQ );
+ testcase( pFirstTerm->eOperator==WO_ISNULL );
+ whereEqualScanEst(pParse, pProbe, pFirstTerm->pExpr->pRight, &nRow);
+ }else if( bInEst==0 ){
+ assert( pFirstTerm->eOperator==WO_IN );
+ whereInScanEst(pParse, pProbe, pFirstTerm->pExpr->x.pList, &nRow);
+ }
+ }
+#endif /* SQLITE_ENABLE_STAT3 */
- /* Adjust the number of rows and the cost downward to reflect rows
+ /* Adjust the number of output rows and downward to reflect rows
** that are excluded by range constraints.
*/
- nRow = (nRow * (double)estBound) / (double)100;
- cost = (cost * (double)estBound) / (double)100;
+ nRow = nRow/rangeDiv;
+ if( nRow<1 ) nRow = 1;
- /* Add in the estimated cost of sorting the result
+ /* Experiments run on real SQLite databases show that the time needed
+ ** to do a binary search to locate a row in a table or index is roughly
+ ** log10(N) times the time to move from one row to the next row within
+ ** a table or index. The actual times can vary, with the size of
+ ** records being an important factor. Both moves and searches are
+ ** slower with larger records, presumably because fewer records fit
+ ** on one page and hence more pages have to be fetched.
+ **
+ ** The ANALYZE command and the sqlite_stat1 and sqlite_stat3 tables do
+ ** not give us data on the relative sizes of table and index records.
+ ** So this computation assumes table records are about twice as big
+ ** as index records
+ */
+ if( (wsFlags & WHERE_NOT_FULLSCAN)==0 ){
+ /* The cost of a full table scan is a number of move operations equal
+ ** to the number of rows in the table.
+ **
+ ** We add an additional 4x penalty to full table scans. This causes
+ ** the cost function to err on the side of choosing an index over
+ ** choosing a full scan. This 4x full-scan penalty is an arguable
+ ** decision and one which we expect to revisit in the future. But
+ ** it seems to be working well enough at the moment.
+ */
+ cost = aiRowEst[0]*4;
+ }else{
+ log10N = estLog(aiRowEst[0]);
+ cost = nRow;
+ if( pIdx ){
+ if( bLookup ){
+ /* For an index lookup followed by a table lookup:
+ ** nInMul index searches to find the start of each index range
+ ** + nRow steps through the index
+ ** + nRow table searches to lookup the table entry using the rowid
+ */
+ cost += (nInMul + nRow)*log10N;
+ }else{
+ /* For a covering index:
+ ** nInMul index searches to find the initial entry
+ ** + nRow steps through the index
+ */
+ cost += nInMul*log10N;
+ }
+ }else{
+ /* For a rowid primary key lookup:
+ ** nInMult table searches to find the initial entry for each range
+ ** + nRow steps through the table
+ */
+ cost += nInMul*log10N;
+ }
+ }
+
+ /* Add in the estimated cost of sorting the result. Actual experimental
+ ** measurements of sorting performance in SQLite show that sorting time
+ ** adds C*N*log10(N) to the cost, where N is the number of rows to be
+ ** sorted and C is a factor between 1.95 and 4.3. We will split the
+ ** difference and select C of 3.0.
*/
if( bSort ){
- cost += cost*estLog(cost);
+ cost += nRow*estLog(nRow)*3;
+ }
+ if( bDist ){
+ cost += nRow*estLog(nRow)*3;
}
- /* If all information can be taken directly from the index, we avoid
- ** doing table lookups. This reduces the cost by half. (Not really -
- ** this needs to be fixed.)
- */
- if( pIdx && bLookup==0 ){
- cost /= (double)2;
- }
/**** Cost of using this index has now been computed ****/
/* If there are additional constraints on this table that cannot
@@ -98293,15 +105625,19 @@
}
}else if( pTerm->eOperator & (WO_LT|WO_LE|WO_GT|WO_GE) ){
if( nSkipRange ){
- /* Ignore the first nBound range constraints since the index
+ /* Ignore the first nSkipRange range constraints since the index
** has already accounted for these */
nSkipRange--;
}else{
/* Assume each additional range constraint reduces the result
- ** set size by a factor of 3 */
+ ** set size by a factor of 3. Indexed range constraints reduce
+ ** the search space by a larger factor: 4. We make indexed range
+ ** more selective intentionally because of the subjective
+ ** observation that indexed range constraints really are more
+ ** selective in practice, on average. */
nRow /= 3;
}
- }else{
+ }else if( pTerm->eOperator!=WO_NOOP ){
/* Any other expression lowers the output row count by half */
nRow /= 2;
}
@@ -98311,11 +105647,11 @@
WHERETRACE((
- "%s(%s): nEq=%d nInMul=%d estBound=%d bSort=%d bLookup=%d wsFlags=0x%x\n"
- " notReady=0x%llx nRow=%.2f cost=%.2f used=0x%llx\n",
+ "%s(%s): nEq=%d nInMul=%d rangeDiv=%d bSort=%d bLookup=%d wsFlags=0x%x\n"
+ " notReady=0x%llx log10N=%.1f nRow=%.1f cost=%.1f used=0x%llx\n",
pSrc->pTab->zName, (pIdx ? pIdx->zName : "ipk"),
- nEq, nInMul, estBound, bSort, bLookup, wsFlags,
- notReady, nRow, cost, used
+ nEq, nInMul, (int)rangeDiv, bSort, bLookup, wsFlags,
+ notReady, log10N, nRow, cost, used
));
/* If this index is the best we have seen so far, then record this
@@ -98393,7 +105729,7 @@
}else
#endif
{
- bestBtreeIndex(pParse, pWC, pSrc, notReady, notValid, pOrderBy, pCost);
+ bestBtreeIndex(pParse, pWC, pSrc, notReady, notValid, pOrderBy, 0, pCost);
}
}
@@ -98716,10 +106052,12 @@
j = i;
if( pPlan->wsFlags&WHERE_BTM_LIMIT ){
- explainAppendTerm(&txt, i++, aCol[aiColumn[j]].zName, ">");
+ char *z = (j==pIndex->nColumn ) ? "rowid" : aCol[aiColumn[j]].zName;
+ explainAppendTerm(&txt, i++, z, ">");
}
if( pPlan->wsFlags&WHERE_TOP_LIMIT ){
- explainAppendTerm(&txt, i, aCol[aiColumn[j]].zName, "<");
+ char *z = (j==pIndex->nColumn ) ? "rowid" : aCol[aiColumn[j]].zName;
+ explainAppendTerm(&txt, i, z, "<");
}
sqlite3StrAccumAppend(&txt, ")", 1);
return sqlite3StrAccumFinish(&txt);
@@ -98818,7 +106156,8 @@
WhereInfo *pWInfo, /* Complete information about the WHERE clause */
int iLevel, /* Which level of pWInfo->a[] should be coded */
u16 wctrlFlags, /* One of the WHERE_* flags defined in sqliteInt.h */
- Bitmask notReady /* Which tables are currently available */
+ Bitmask notReady, /* Which tables are currently available */
+ Expr *pWhere /* Complete WHERE clause */
){
int j, k; /* Loop counters */
int iCur; /* The VDBE cursor for the table */
@@ -99076,7 +106415,7 @@
pIdx = pLevel->plan.u.pIdx;
iIdxCur = pLevel->iIdxCur;
- k = pIdx->aiColumn[nEq]; /* Column for inequality constraints */
+ k = (nEq==pIdx->nColumn ? -1 : pIdx->aiColumn[nEq]);
/* If this loop satisfies a sort order (pOrderBy) request that
** was passed to this function to implement a "SELECT min(x) ..."
@@ -99122,7 +106461,9 @@
** a forward order scan on a descending index, interchange the
** start and end terms (pRangeStart and pRangeEnd).
*/
- if( nEq<pIdx->nColumn && bRev==(pIdx->aSortOrder[nEq]==SQLITE_SO_ASC) ){
+ if( (nEq<pIdx->nColumn && bRev==(pIdx->aSortOrder[nEq]==SQLITE_SO_ASC))
+ || (bRev && pIdx->nColumn==nEq)
+ ){
SWAP(WhereTerm *, pRangeEnd, pRangeStart);
}
@@ -99139,7 +106480,9 @@
if( pRangeStart ){
Expr *pRight = pRangeStart->pExpr->pRight;
sqlite3ExprCode(pParse, pRight, regBase+nEq);
- sqlite3ExprCodeIsNullJump(v, pRight, regBase+nEq, addrNxt);
+ if( (pRangeStart->wtFlags & TERM_VNULL)==0 ){
+ sqlite3ExprCodeIsNullJump(v, pRight, regBase+nEq, addrNxt);
+ }
if( zStartAff ){
if( sqlite3CompareAffinity(pRight, zStartAff[nEq])==SQLITE_AFF_NONE){
/* Since the comparison is to be performed with no conversions
@@ -99178,7 +106521,9 @@
Expr *pRight = pRangeEnd->pExpr->pRight;
sqlite3ExprCacheRemove(pParse, regBase+nEq, 1);
sqlite3ExprCode(pParse, pRight, regBase+nEq);
- sqlite3ExprCodeIsNullJump(v, pRight, regBase+nEq, addrNxt);
+ if( (pRangeEnd->wtFlags & TERM_VNULL)==0 ){
+ sqlite3ExprCodeIsNullJump(v, pRight, regBase+nEq, addrNxt);
+ }
if( zEndAff ){
if( sqlite3CompareAffinity(pRight, zEndAff[nEq])==SQLITE_AFF_NONE){
/* Since the comparison is to be performed with no conversions
@@ -99236,7 +106581,13 @@
/* Record the instruction used to terminate the loop. Disable
** WHERE clause terms made redundant by the index range scan.
*/
- pLevel->op = bRev ? OP_Prev : OP_Next;
+ if( pLevel->plan.wsFlags & WHERE_UNIQUE ){
+ pLevel->op = OP_Noop;
+ }else if( bRev ){
+ pLevel->op = OP_Prev;
+ }else{
+ pLevel->op = OP_Next;
+ }
pLevel->p1 = iIdxCur;
}else
@@ -99282,7 +106633,6 @@
**
*/
WhereClause *pOrWc; /* The OR-clause broken out into subterms */
- WhereTerm *pFinal; /* Final subterm within the OR-clause. */
SrcList *pOrTab; /* Shortened table list or OR-clause generation */
int regReturn = ++pParse->nMem; /* Register used with OP_Gosub */
@@ -99291,14 +106641,14 @@
int iLoopBody = sqlite3VdbeMakeLabel(v); /* Start of loop body */
int iRetInit; /* Address of regReturn init */
int untestedTerms = 0; /* Some terms not completely tested */
- int ii;
+ int ii; /* Loop counter */
+ Expr *pAndExpr = 0; /* An ".. AND (...)" expression */
pTerm = pLevel->plan.u.pTerm;
assert( pTerm!=0 );
assert( pTerm->eOperator==WO_OR );
assert( (pTerm->wtFlags & TERM_ORINFO)!=0 );
pOrWc = &pTerm->u.pOrInfo->wc;
- pFinal = &pOrWc->a[pOrWc->nTerm-1];
pLevel->op = OP_Return;
pLevel->p1 = regReturn;
@@ -99342,13 +106692,28 @@
}
iRetInit = sqlite3VdbeAddOp2(v, OP_Integer, 0, regReturn);
+ /* If the original WHERE clause is z of the form: (x1 OR x2 OR ...) AND y
+ ** Then for every term xN, evaluate as the subexpression: xN AND z
+ ** That way, terms in y that are factored into the disjunction will
+ ** be picked up by the recursive calls to sqlite3WhereBegin() below.
+ */
+ if( pWC->nTerm>1 ){
+ pAndExpr = sqlite3ExprAlloc(pParse->db, TK_AND, 0, 0);
+ pAndExpr->pRight = pWhere;
+ }
+
for(ii=0; ii<pOrWc->nTerm; ii++){
WhereTerm *pOrTerm = &pOrWc->a[ii];
if( pOrTerm->leftCursor==iCur || pOrTerm->eOperator==WO_AND ){
WhereInfo *pSubWInfo; /* Info for single OR-term scan */
+ Expr *pOrExpr = pOrTerm->pExpr;
+ if( pAndExpr ){
+ pAndExpr->pLeft = pOrExpr;
+ pOrExpr = pAndExpr;
+ }
/* Loop through table entries that match term pOrTerm. */
- pSubWInfo = sqlite3WhereBegin(pParse, pOrTab, pOrTerm->pExpr, 0,
- WHERE_OMIT_OPEN | WHERE_OMIT_CLOSE |
+ pSubWInfo = sqlite3WhereBegin(pParse, pOrTab, pOrExpr, 0, 0,
+ WHERE_OMIT_OPEN_CLOSE | WHERE_AND_ONLY |
WHERE_FORCE_TABLE | WHERE_ONETABLE_ONLY);
if( pSubWInfo ){
explainOneScan(
@@ -99376,6 +106741,7 @@
}
}
}
+ sqlite3DbFree(pParse->db, pAndExpr);
sqlite3VdbeChangeP1(v, iRetInit, sqlite3VdbeCurrentAddr(v));
sqlite3VdbeAddOp2(v, OP_Goto, 0, pLevel->addrBrk);
sqlite3VdbeResolveLabel(v, iLoopBody);
@@ -99407,7 +106773,6 @@
** the use of indices become tests that are evaluated against each row of
** the relevant input tables.
*/
- k = 0;
for(pTerm=pWC->a, j=pWC->nTerm; j>0; j--, pTerm++){
Expr *pE;
testcase( pTerm->wtFlags & TERM_VIRTUAL ); /* IMP: R-30575-11662 */
@@ -99425,7 +106790,6 @@
continue;
}
sqlite3ExprIfFalse(pParse, pE, addrCont, SQLITE_JUMPIFNULL);
- k = 1;
pTerm->wtFlags |= TERM_CODED;
}
@@ -99590,6 +106954,7 @@
SrcList *pTabList, /* A list of all tables to be scanned */
Expr *pWhere, /* The WHERE clause */
ExprList **ppOrderBy, /* An ORDER BY clause, or NULL */
+ ExprList *pDistinct, /* The select-list for DISTINCT queries - or NULL */
u16 wctrlFlags /* One of the WHERE_* flags defined in sqliteInt.h */
){
int i; /* Loop counter */
@@ -99650,11 +107015,15 @@
pWInfo->savedNQueryLoop = pParse->nQueryLoop;
pMaskSet = (WhereMaskSet*)&pWC[1];
+ /* Disable the DISTINCT optimization if SQLITE_DistinctOpt is set via
+ ** sqlite3_test_ctrl(SQLITE_TESTCTRL_OPTIMIZATIONS,...) */
+ if( db->flags & SQLITE_DistinctOpt ) pDistinct = 0;
+
/* Split the WHERE clause into separate subexpressions where each
** subexpression is separated by an AND operator.
*/
initMaskSet(pMaskSet);
- whereClauseInit(pWC, pParse, pMaskSet);
+ whereClauseInit(pWC, pParse, pMaskSet, wctrlFlags);
sqlite3ExprCodeConstants(pParse, pWhere);
whereSplit(pWC, pWhere, TK_AND); /* IMP: R-15842-53296 */
@@ -99717,6 +107086,15 @@
goto whereBeginError;
}
+ /* Check if the DISTINCT qualifier, if there is one, is redundant.
+ ** If it is, then set pDistinct to NULL and WhereInfo.eDistinct to
+ ** WHERE_DISTINCT_UNIQUE to tell the caller to ignore the DISTINCT.
+ */
+ if( pDistinct && isDistinctRedundant(pParse, pTabList, pWC, pDistinct) ){
+ pDistinct = 0;
+ pWInfo->eDistinct = WHERE_DISTINCT_UNIQUE;
+ }
+
/* Chose the best index to use for each table in the FROM clause.
**
** This loop fills in the following fields:
@@ -99733,8 +107111,6 @@
** clause.
*/
notReady = ~(Bitmask)0;
- pTabItem = pTabList->a;
- pLevel = pWInfo->a;
andFlags = ~0;
WHERETRACE(("*** Optimizer Start ***\n"));
for(i=iFrom=0, pLevel=pWInfo->a; i<nTabList; i++, pLevel++){
@@ -99802,6 +107178,7 @@
int doNotReorder; /* True if this table should not be reordered */
WhereCost sCost; /* Cost information from best[Virtual]Index() */
ExprList *pOrderBy; /* ORDER BY clause for index to optimize */
+ ExprList *pDist; /* DISTINCT clause for index to optimize */
doNotReorder = (pTabItem->jointype & (JT_LEFT|JT_CROSS))!=0;
if( j!=iFrom && doNotReorder ) break;
@@ -99812,6 +107189,7 @@
}
mask = (isOptimal ? m : notReady);
pOrderBy = ((i==0 && ppOrderBy )?*ppOrderBy:0);
+ pDist = (i==0 ? pDistinct : 0);
if( pTabItem->pIndex==0 ) nUnconstrained++;
WHERETRACE(("=== trying table %d with isOptimal=%d ===\n",
@@ -99826,7 +107204,7 @@
#endif
{
bestBtreeIndex(pParse, pWC, pTabItem, mask, notReady, pOrderBy,
- &sCost);
+ pDist, &sCost);
}
assert( isOptimal || (sCost.used¬Ready)==0 );
@@ -99845,8 +107223,8 @@
** (1) The table must not depend on other tables that have not
** yet run.
**
- ** (2) A full-table-scan plan cannot supercede another plan unless
- ** it is an "optimal" plan as defined above.
+ ** (2) A full-table-scan plan cannot supercede indexed plan unless
+ ** the full-table-scan is an "optimal" plan as defined above.
**
** (3) All tables have an INDEXED BY clause or this table lacks an
** INDEXED BY clause or this table uses the specific
@@ -99862,6 +107240,7 @@
*/
if( (sCost.used¬Ready)==0 /* (1) */
&& (bestJ<0 || (notIndexed&m)!=0 /* (2) */
+ || (bestPlan.plan.wsFlags & WHERE_NOT_FULLSCAN)==0
|| (sCost.plan.wsFlags & WHERE_NOT_FULLSCAN)!=0)
&& (nUnconstrained==0 || pTabItem->pIndex==0 /* (3) */
|| NEVER((sCost.plan.wsFlags & WHERE_NOT_FULLSCAN)!=0))
@@ -99883,9 +107262,14 @@
WHERETRACE(("*** Optimizer selects table %d for loop %d"
" with cost=%g and nRow=%g\n",
bestJ, pLevel-pWInfo->a, bestPlan.rCost, bestPlan.plan.nRow));
- if( (bestPlan.plan.wsFlags & WHERE_ORDERBY)!=0 ){
+ /* The ALWAYS() that follows was added to hush up clang scan-build */
+ if( (bestPlan.plan.wsFlags & WHERE_ORDERBY)!=0 && ALWAYS(ppOrderBy) ){
*ppOrderBy = 0;
}
+ if( (bestPlan.plan.wsFlags & WHERE_DISTINCT)!=0 ){
+ assert( pWInfo->eDistinct==0 );
+ pWInfo->eDistinct = WHERE_DISTINCT_ORDERED;
+ }
andFlags &= bestPlan.plan.wsFlags;
pLevel->plan = bestPlan.plan;
testcase( bestPlan.plan.wsFlags & WHERE_INDEXED );
@@ -99968,7 +107352,7 @@
}else
#endif
if( (pLevel->plan.wsFlags & WHERE_IDX_ONLY)==0
- && (wctrlFlags & WHERE_OMIT_OPEN)==0 ){
+ && (wctrlFlags & WHERE_OMIT_OPEN_CLOSE)==0 ){
int op = pWInfo->okOnePass ? OP_OpenWrite : OP_OpenRead;
sqlite3OpenTable(pParse, pTabItem->iCursor, iDb, pTab, op);
testcase( pTab->nCol==BMS-1 );
@@ -100013,7 +107397,7 @@
for(i=0; i<nTabList; i++){
pLevel = &pWInfo->a[i];
explainOneScan(pParse, pTabList, pLevel, i, pLevel->iFrom, wctrlFlags);
- notReady = codeOneLoopStart(pWInfo, i, wctrlFlags, notReady);
+ notReady = codeOneLoopStart(pWInfo, i, wctrlFlags, notReady, pWhere);
pWInfo->iContinue = pLevel->addrCont;
}
@@ -100148,7 +107532,7 @@
assert( pTab!=0 );
if( (pTab->tabFlags & TF_Ephemeral)==0
&& pTab->pSelect==0
- && (pWInfo->wctrlFlags & WHERE_OMIT_CLOSE)==0
+ && (pWInfo->wctrlFlags & WHERE_OMIT_OPEN_CLOSE)==0
){
int ws = pLevel->plan.wsFlags;
if( !pWInfo->okOnePass && (ws & WHERE_IDX_ONLY)==0 ){
@@ -100220,6 +107604,7 @@
*/
/* First off, code is included that follows the "include" declaration
** in the input grammar file. */
+/* #include <stdio.h> */
/*
@@ -101080,6 +108465,7 @@
typedef struct yyParser yyParser;
#ifndef NDEBUG
+/* #include <stdio.h> */
static FILE *yyTraceFILE = 0;
static char *yyTracePrompt = 0;
#endif /* NDEBUG */
@@ -101843,7 +109229,6 @@
UNUSED_PARAMETER(yypMinor); /* Silence some compiler warnings */
sqlite3ErrorMsg(pParse, "parser stack overflow");
- pParse->parseError = 1;
sqlite3ParserARG_STORE; /* Suppress warning about unused %extra_argument var */
}
@@ -102566,6 +109951,9 @@
{
SelectDest dest = {SRT_Output, 0, 0, 0, 0};
sqlite3Select(pParse, yymsp[0].minor.yy387, &dest);
+ sqlite3ExplainBegin(pParse->pVdbe);
+ sqlite3ExplainSelect(pParse->pVdbe, yymsp[0].minor.yy387);
+ sqlite3ExplainFinish(pParse->pVdbe);
sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy387);
}
break;
@@ -103444,7 +110832,6 @@
UNUSED_PARAMETER(yymajor); /* Silence some compiler warnings */
assert( TOKEN.z[0] ); /* The tokenizer always gives us a token */
sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", &TOKEN);
- pParse->parseError = 1;
sqlite3ParserARG_STORE; /* Suppress warning about unused %extra_argument variable */
}
@@ -103493,7 +110880,9 @@
){
YYMINORTYPE yyminorunion;
int yyact; /* The parser action. */
+#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY)
int yyendofinput; /* True if we are at the end of input */
+#endif
#ifdef YYERRORSYMBOL
int yyerrorhit = 0; /* True if yymajor has invoked an error */
#endif
@@ -103516,7 +110905,9 @@
yypParser->yystack[0].major = 0;
}
yyminorunion.yy0 = yyminor;
+#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY)
yyendofinput = (yymajor==0);
+#endif
sqlite3ParserARG_STORE;
#ifndef NDEBUG
@@ -103528,7 +110919,6 @@
do{
yyact = yy_find_shift_action(yypParser,(YYCODETYPE)yymajor);
if( yyact<YYNSTATE ){
- assert( !yyendofinput ); /* Impossible to shift the $ token */
yy_shift(yypParser,yyact,yymajor,&yyminorunion);
yypParser->yyerrcnt--;
yymajor = YYNOCODE;
@@ -103655,6 +111045,7 @@
** individual tokens and sends those tokens one-by-one over to the
** parser for analysis.
*/
+/* #include <stdlib.h> */
/*
** The charMap() macro maps alphabetic characters into their
@@ -104035,7 +111426,7 @@
}
case '-': {
if( z[1]=='-' ){
- /* IMP: R-15891-05542 -- syntax diagram for comments */
+ /* IMP: R-50417-27976 -- syntax diagram for comments */
for(i=2; (c=z[i])!=0 && c!='\n'; i++){}
*tokenType = TK_SPACE; /* IMP: R-22934-25134 */
return i;
@@ -104068,7 +111459,7 @@
*tokenType = TK_SLASH;
return 1;
}
- /* IMP: R-15891-05542 -- syntax diagram for comments */
+ /* IMP: R-50417-27976 -- syntax diagram for comments */
for(i=3, c=z[2]; (c!='*' || z[i]!='/') && (c=z[i])!=0; i++){}
if( c ) i++;
*tokenType = TK_SPACE; /* IMP: R-22934-25134 */
@@ -104265,13 +111656,12 @@
testcase( z[0]=='x' ); testcase( z[0]=='X' );
if( z[1]=='\'' ){
*tokenType = TK_BLOB;
- for(i=2; (c=z[i])!=0 && c!='\''; i++){
- if( !sqlite3Isxdigit(c) ){
- *tokenType = TK_ILLEGAL;
- }
+ for(i=2; sqlite3Isxdigit(z[i]); i++){}
+ if( z[i]!='\'' || i%2 ){
+ *tokenType = TK_ILLEGAL;
+ while( z[i] && z[i]!='\'' ){ i++; }
}
- if( i%2 || !c ) *tokenType = TK_ILLEGAL;
- if( c ) i++;
+ if( z[i] ) i++;
return i;
}
/* Otherwise fall through to the next case */
@@ -104324,9 +111714,8 @@
assert( pParse->pNewTable==0 );
assert( pParse->pNewTrigger==0 );
assert( pParse->nVar==0 );
- assert( pParse->nVarExpr==0 );
- assert( pParse->nVarExprAlloc==0 );
- assert( pParse->apVarExpr==0 );
+ assert( pParse->nzVar==0 );
+ assert( pParse->azVar==0 );
enableLookaside = db->lookaside.bEnabled;
if( db->lookaside.pStart ) db->lookaside.bEnabled = 1;
while( !db->mallocFailed && zSql[i]!=0 ){
@@ -104420,7 +111809,8 @@
}
sqlite3DeleteTrigger(db, pParse->pNewTrigger);
- sqlite3DbFree(db, pParse->apVarExpr);
+ for(i=pParse->nzVar-1; i>=0; i--) sqlite3DbFree(db, pParse->azVar[i]);
+ sqlite3DbFree(db, pParse->azVar);
sqlite3DbFree(db, pParse->aAlias);
while( pParse->pAinc ){
AutoincInfo *p = pParse->pAinc;
@@ -104863,8 +112253,8 @@
*/
SQLITE_API int sqlite3_libversion_number(void){ return SQLITE_VERSION_NUMBER; }
-/* IMPLEMENTATION-OF: R-54823-41343 The sqlite3_threadsafe() function returns
-** zero if and only if SQLite was compiled mutexing code omitted due to
+/* IMPLEMENTATION-OF: R-20790-14025 The sqlite3_threadsafe() function returns
+** zero if and only if SQLite was compiled with mutexing code omitted due to
** the SQLITE_THREADSAFE compile-time option being set to 0.
*/
SQLITE_API int sqlite3_threadsafe(void){ return SQLITE_THREADSAFE; }
@@ -104920,7 +112310,7 @@
** without blocking.
*/
SQLITE_API int sqlite3_initialize(void){
- sqlite3_mutex *pMaster; /* The main static mutex */
+ MUTEX_LOGIC( sqlite3_mutex *pMaster; ) /* The main static mutex */
int rc; /* Result code */
#ifdef SQLITE_OMIT_WSD
@@ -104954,7 +112344,7 @@
** malloc subsystem - this implies that the allocation of a static
** mutex must not require support from the malloc subsystem.
*/
- pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+ MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
sqlite3_mutex_enter(pMaster);
sqlite3GlobalConfig.isMutexInit = 1;
if( !sqlite3GlobalConfig.isMallocInit ){
@@ -105048,6 +112438,16 @@
#endif
#endif
+ /* Do extra initialization steps requested by the SQLITE_EXTRA_INIT
+ ** compile-time option.
+ */
+#ifdef SQLITE_EXTRA_INIT
+ if( rc==SQLITE_OK && sqlite3GlobalConfig.isInit ){
+ int SQLITE_EXTRA_INIT(const char*);
+ rc = SQLITE_EXTRA_INIT(0);
+ }
+#endif
+
return rc;
}
@@ -105061,6 +112461,10 @@
*/
SQLITE_API int sqlite3_shutdown(void){
if( sqlite3GlobalConfig.isInit ){
+#ifdef SQLITE_EXTRA_SHUTDOWN
+ void SQLITE_EXTRA_SHUTDOWN(void);
+ SQLITE_EXTRA_SHUTDOWN();
+#endif
sqlite3_os_end();
sqlite3_reset_auto_extension();
sqlite3GlobalConfig.isInit = 0;
@@ -105169,16 +112573,25 @@
}
case SQLITE_CONFIG_PCACHE: {
- /* Specify an alternative page cache implementation */
- sqlite3GlobalConfig.pcache = *va_arg(ap, sqlite3_pcache_methods*);
+ /* no-op */
+ break;
+ }
+ case SQLITE_CONFIG_GETPCACHE: {
+ /* now an error */
+ rc = SQLITE_ERROR;
break;
}
- case SQLITE_CONFIG_GETPCACHE: {
- if( sqlite3GlobalConfig.pcache.xInit==0 ){
+ case SQLITE_CONFIG_PCACHE2: {
+ /* Specify an alternative page cache implementation */
+ sqlite3GlobalConfig.pcache2 = *va_arg(ap, sqlite3_pcache_methods2*);
+ break;
+ }
+ case SQLITE_CONFIG_GETPCACHE2: {
+ if( sqlite3GlobalConfig.pcache2.xInit==0 ){
sqlite3PCacheSetDefault();
}
- *va_arg(ap, sqlite3_pcache_methods*) = sqlite3GlobalConfig.pcache;
+ *va_arg(ap, sqlite3_pcache_methods2*) = sqlite3GlobalConfig.pcache2;
break;
}
@@ -105189,6 +112602,13 @@
sqlite3GlobalConfig.nHeap = va_arg(ap, int);
sqlite3GlobalConfig.mnReq = va_arg(ap, int);
+ if( sqlite3GlobalConfig.mnReq<1 ){
+ sqlite3GlobalConfig.mnReq = 1;
+ }else if( sqlite3GlobalConfig.mnReq>(1<<12) ){
+ /* cap min request size at 2^12 */
+ sqlite3GlobalConfig.mnReq = (1<<12);
+ }
+
if( sqlite3GlobalConfig.pHeap==0 ){
/* If the heap pointer is NULL, then restore the malloc implementation
** back to NULL pointers too. This will cause the malloc to go
@@ -105233,6 +112653,11 @@
break;
}
+ case SQLITE_CONFIG_URI: {
+ sqlite3GlobalConfig.bOpenUri = va_arg(ap, int);
+ break;
+ }
+
default: {
rc = SQLITE_ERROR;
break;
@@ -105265,21 +112690,21 @@
if( db->lookaside.bMalloced ){
sqlite3_free(db->lookaside.pStart);
}
- /* The size of a lookaside slot needs to be larger than a pointer
- ** to be useful.
+ /* The size of a lookaside slot after ROUNDDOWN8 needs to be larger
+ ** than a pointer to be useful.
*/
+ sz = ROUNDDOWN8(sz); /* IMP: R-33038-09382 */
if( sz<=(int)sizeof(LookasideSlot*) ) sz = 0;
if( cnt<0 ) cnt = 0;
if( sz==0 || cnt==0 ){
sz = 0;
pStart = 0;
}else if( pBuf==0 ){
- sz = ROUNDDOWN8(sz); /* IMP: R-33038-09382 */
sqlite3BeginBenignMalloc();
pStart = sqlite3Malloc( sz*cnt ); /* IMP: R-61949-35727 */
sqlite3EndBenignMalloc();
+ if( pStart ) cnt = sqlite3MallocSize(pStart)/sz;
}else{
- sz = ROUNDDOWN8(sz); /* IMP: R-33038-09382 */
pStart = pBuf;
}
db->lookaside.pStart = pStart;
@@ -105314,6 +112739,26 @@
}
/*
+** Free up as much memory as we can from the given database
+** connection.
+*/
+SQLITE_API int sqlite3_db_release_memory(sqlite3 *db){
+ int i;
+ sqlite3_mutex_enter(db->mutex);
+ sqlite3BtreeEnterAll(db);
+ for(i=0; i<db->nDb; i++){
+ Btree *pBt = db->aDb[i].pBt;
+ if( pBt ){
+ Pager *pPager = sqlite3BtreePager(pBt);
+ sqlite3PagerShrink(pPager);
+ }
+ }
+ sqlite3BtreeLeaveAll(db);
+ sqlite3_mutex_leave(db->mutex);
+ return SQLITE_OK;
+}
+
+/*
** Configuration settings for an individual database connection
*/
SQLITE_API int sqlite3_db_config(sqlite3 *db, int op, ...){
@@ -105322,14 +112767,42 @@
va_start(ap, op);
switch( op ){
case SQLITE_DBCONFIG_LOOKASIDE: {
- void *pBuf = va_arg(ap, void*); /* IMP: R-21112-12275 */
+ void *pBuf = va_arg(ap, void*); /* IMP: R-26835-10964 */
int sz = va_arg(ap, int); /* IMP: R-47871-25994 */
int cnt = va_arg(ap, int); /* IMP: R-04460-53386 */
rc = setupLookaside(db, pBuf, sz, cnt);
break;
}
default: {
+ static const struct {
+ int op; /* The opcode */
+ u32 mask; /* Mask of the bit in sqlite3.flags to set/clear */
+ } aFlagOp[] = {
+ { SQLITE_DBCONFIG_ENABLE_FKEY, SQLITE_ForeignKeys },
+ { SQLITE_DBCONFIG_ENABLE_TRIGGER, SQLITE_EnableTrigger },
+ };
+ unsigned int i;
rc = SQLITE_ERROR; /* IMP: R-42790-23372 */
+ for(i=0; i<ArraySize(aFlagOp); i++){
+ if( aFlagOp[i].op==op ){
+ int onoff = va_arg(ap, int);
+ int *pRes = va_arg(ap, int*);
+ int oldFlags = db->flags;
+ if( onoff>0 ){
+ db->flags |= aFlagOp[i].mask;
+ }else if( onoff==0 ){
+ db->flags &= ~aFlagOp[i].mask;
+ }
+ if( oldFlags!=db->flags ){
+ sqlite3ExpirePreparedStatements(db);
+ }
+ if( pRes ){
+ *pRes = (db->flags & aFlagOp[i].mask)!=0;
+ }
+ rc = SQLITE_OK;
+ break;
+ }
+ }
break;
}
}
@@ -105466,7 +112939,8 @@
}
sqlite3_mutex_enter(db->mutex);
- sqlite3ResetInternalSchema(db, 0);
+ /* Force xDestroy calls on all virtual tables */
+ sqlite3ResetInternalSchema(db, -1);
/* If a transaction is open, the ResetInternalSchema() call above
** will not have called the xDisconnect() method on any virtual
@@ -105479,16 +112953,10 @@
/* If there are any outstanding VMs, return SQLITE_BUSY. */
if( db->pVdbe ){
- // Begin Android Change
- // print the first unfinalized statement in the error message, to help the developer
- // figure out what the unfinalized statement is.
- char buff[120];
- snprintf(buff, sizeof(buff), "%d,%s", (int)db->pVdbe, db->pVdbe->zSql);
- sqlite3Error(db, SQLITE_UNCLOSED, buff);
- // End Android Change
-
+ sqlite3Error(db, SQLITE_BUSY,
+ "unable to close due to unfinalised statements");
sqlite3_mutex_leave(db->mutex);
- return SQLITE_UNCLOSED;
+ return SQLITE_BUSY;
}
assert( sqlite3SafetyCheckSickOrOk(db) );
@@ -105515,7 +112983,7 @@
}
}
}
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
/* Tell the code in notify.c that the connection no longer holds any
** locks and does not require any further unlock-notify callbacks.
@@ -105606,7 +113074,7 @@
if( db->flags&SQLITE_InternChanges ){
sqlite3ExpirePreparedStatements(db);
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
}
/* Any deferred constraint violations have now been resolved. */
@@ -105636,7 +113104,7 @@
/* SQLITE_INTERRUPT */ "interrupted",
/* SQLITE_IOERR */ "disk I/O error",
/* SQLITE_CORRUPT */ "database disk image is malformed",
- /* SQLITE_NOTFOUND */ 0,
+ /* SQLITE_NOTFOUND */ "unknown operation",
/* SQLITE_FULL */ "database or disk is full",
/* SQLITE_CANTOPEN */ "unable to open database file",
/* SQLITE_PROTOCOL */ "locking protocol",
@@ -105675,7 +113143,7 @@
{ 1, 2, 5, 10, 15, 20, 25, 25, 25, 50, 50, 100 };
static const u8 totals[] =
{ 0, 1, 3, 8, 18, 33, 53, 78, 103, 128, 178, 228 };
-# define NDELAY (sizeof(delays)/sizeof(delays[0]))
+# define NDELAY ArraySize(delays)
sqlite3 *db = (sqlite3 *)ptr;
int timeout = db->busyTimeout;
int delay, prior;
@@ -105983,13 +113451,13 @@
int nArg
){
int nName = sqlite3Strlen30(zName);
- int rc;
+ int rc = SQLITE_OK;
sqlite3_mutex_enter(db->mutex);
if( sqlite3FindFunction(db, zName, nName, nArg, SQLITE_UTF8, 0)==0 ){
- sqlite3CreateFunc(db, zName, nArg, SQLITE_UTF8,
- 0, sqlite3InvalidFunction, 0, 0, 0);
+ rc = sqlite3CreateFunc(db, zName, nArg, SQLITE_UTF8,
+ 0, sqlite3InvalidFunction, 0, 0, 0);
}
- rc = sqlite3ApiExit(db, SQLITE_OK);
+ rc = sqlite3ApiExit(db, rc);
sqlite3_mutex_leave(db->mutex);
return rc;
}
@@ -106160,19 +113628,33 @@
#endif
}
-
/*
-** Checkpoint database zDb. If zDb is NULL, or if the buffer zDb points
-** to contains a zero-length string, all attached databases are
-** checkpointed.
+** Checkpoint database zDb.
*/
-SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb){
+SQLITE_API int sqlite3_wal_checkpoint_v2(
+ sqlite3 *db, /* Database handle */
+ const char *zDb, /* Name of attached database (or NULL) */
+ int eMode, /* SQLITE_CHECKPOINT_* value */
+ int *pnLog, /* OUT: Size of WAL log in frames */
+ int *pnCkpt /* OUT: Total number of frames checkpointed */
+){
#ifdef SQLITE_OMIT_WAL
return SQLITE_OK;
#else
int rc; /* Return code */
int iDb = SQLITE_MAX_ATTACHED; /* sqlite3.aDb[] index of db to checkpoint */
+ /* Initialize the output variables to -1 in case an error occurs. */
+ if( pnLog ) *pnLog = -1;
+ if( pnCkpt ) *pnCkpt = -1;
+
+ assert( SQLITE_CHECKPOINT_FULL>SQLITE_CHECKPOINT_PASSIVE );
+ assert( SQLITE_CHECKPOINT_FULL<SQLITE_CHECKPOINT_RESTART );
+ assert( SQLITE_CHECKPOINT_PASSIVE+2==SQLITE_CHECKPOINT_RESTART );
+ if( eMode<SQLITE_CHECKPOINT_PASSIVE || eMode>SQLITE_CHECKPOINT_RESTART ){
+ return SQLITE_MISUSE;
+ }
+
sqlite3_mutex_enter(db->mutex);
if( zDb && zDb[0] ){
iDb = sqlite3FindDbName(db, zDb);
@@ -106181,7 +113663,7 @@
rc = SQLITE_ERROR;
sqlite3Error(db, SQLITE_ERROR, "unknown database: %s", zDb);
}else{
- rc = sqlite3Checkpoint(db, iDb);
+ rc = sqlite3Checkpoint(db, iDb, eMode, pnLog, pnCkpt);
sqlite3Error(db, rc, 0);
}
rc = sqlite3ApiExit(db, rc);
@@ -106190,6 +113672,16 @@
#endif
}
+
+/*
+** Checkpoint database zDb. If zDb is NULL, or if the buffer zDb points
+** to contains a zero-length string, all attached databases are
+** checkpointed.
+*/
+SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb){
+ return sqlite3_wal_checkpoint_v2(db, zDb, SQLITE_CHECKPOINT_PASSIVE, 0, 0);
+}
+
#ifndef SQLITE_OMIT_WAL
/*
** Run a checkpoint on database iDb. This is a no-op if database iDb is
@@ -106207,20 +113699,31 @@
** If iDb is passed SQLITE_MAX_ATTACHED, then all attached databases are
** checkpointed. If an error is encountered it is returned immediately -
** no attempt is made to checkpoint any remaining databases.
+**
+** Parameter eMode is one of SQLITE_CHECKPOINT_PASSIVE, FULL or RESTART.
*/
-SQLITE_PRIVATE int sqlite3Checkpoint(sqlite3 *db, int iDb){
+SQLITE_PRIVATE int sqlite3Checkpoint(sqlite3 *db, int iDb, int eMode, int *pnLog, int *pnCkpt){
int rc = SQLITE_OK; /* Return code */
int i; /* Used to iterate through attached dbs */
+ int bBusy = 0; /* True if SQLITE_BUSY has been encountered */
assert( sqlite3_mutex_held(db->mutex) );
+ assert( !pnLog || *pnLog==-1 );
+ assert( !pnCkpt || *pnCkpt==-1 );
for(i=0; i<db->nDb && rc==SQLITE_OK; i++){
if( i==iDb || iDb==SQLITE_MAX_ATTACHED ){
- rc = sqlite3BtreeCheckpoint(db->aDb[i].pBt);
+ rc = sqlite3BtreeCheckpoint(db->aDb[i].pBt, eMode, pnLog, pnCkpt);
+ pnLog = 0;
+ pnCkpt = 0;
+ if( rc==SQLITE_BUSY ){
+ bBusy = 1;
+ rc = SQLITE_OK;
+ }
}
}
- return rc;
+ return (rc==SQLITE_OK && bBusy) ? SQLITE_BUSY : rc;
}
#endif /* SQLITE_OMIT_WAL */
@@ -106362,7 +113865,6 @@
sqlite3* db,
const char *zName,
u8 enc,
- u8 collType,
void* pCtx,
int(*xCompare)(void*,int,const void*,int,const void*),
void(*xDel)(void*)
@@ -106427,7 +113929,6 @@
pColl->pUser = pCtx;
pColl->xDel = xDel;
pColl->enc = (u8)(enc2 | (enc & SQLITE_UTF16_ALIGNED));
- pColl->type = collType;
sqlite3Error(db, SQLITE_OK, 0);
return SQLITE_OK;
}
@@ -106473,8 +113974,8 @@
#if SQLITE_MAX_FUNCTION_ARG<0 || SQLITE_MAX_FUNCTION_ARG>1000
# error SQLITE_MAX_FUNCTION_ARG must be between 0 and 1000
#endif
-#if SQLITE_MAX_ATTACHED<0 || SQLITE_MAX_ATTACHED>30
-# error SQLITE_MAX_ATTACHED must be between 0 and 30
+#if SQLITE_MAX_ATTACHED<0 || SQLITE_MAX_ATTACHED>62
+# error SQLITE_MAX_ATTACHED must be between 0 and 62
#endif
#if SQLITE_MAX_LIKE_PATTERN_LENGTH<1
# error SQLITE_MAX_LIKE_PATTERN_LENGTH must be at least 1
@@ -106535,6 +114036,236 @@
}
/*
+** This function is used to parse both URIs and non-URI filenames passed by the
+** user to API functions sqlite3_open() or sqlite3_open_v2(), and for database
+** URIs specified as part of ATTACH statements.
+**
+** The first argument to this function is the name of the VFS to use (or
+** a NULL to signify the default VFS) if the URI does not contain a "vfs=xxx"
+** query parameter. The second argument contains the URI (or non-URI filename)
+** itself. When this function is called the *pFlags variable should contain
+** the default flags to open the database handle with. The value stored in
+** *pFlags may be updated before returning if the URI filename contains
+** "cache=xxx" or "mode=xxx" query parameters.
+**
+** If successful, SQLITE_OK is returned. In this case *ppVfs is set to point to
+** the VFS that should be used to open the database file. *pzFile is set to
+** point to a buffer containing the name of the file to open. It is the
+** responsibility of the caller to eventually call sqlite3_free() to release
+** this buffer.
+**
+** If an error occurs, then an SQLite error code is returned and *pzErrMsg
+** may be set to point to a buffer containing an English language error
+** message. It is the responsibility of the caller to eventually release
+** this buffer by calling sqlite3_free().
+*/
+SQLITE_PRIVATE int sqlite3ParseUri(
+ const char *zDefaultVfs, /* VFS to use if no "vfs=xxx" query option */
+ const char *zUri, /* Nul-terminated URI to parse */
+ unsigned int *pFlags, /* IN/OUT: SQLITE_OPEN_XXX flags */
+ sqlite3_vfs **ppVfs, /* OUT: VFS to use */
+ char **pzFile, /* OUT: Filename component of URI */
+ char **pzErrMsg /* OUT: Error message (if rc!=SQLITE_OK) */
+){
+ int rc = SQLITE_OK;
+ unsigned int flags = *pFlags;
+ const char *zVfs = zDefaultVfs;
+ char *zFile;
+ char c;
+ int nUri = sqlite3Strlen30(zUri);
+
+ assert( *pzErrMsg==0 );
+
+ if( ((flags & SQLITE_OPEN_URI) || sqlite3GlobalConfig.bOpenUri)
+ && nUri>=5 && memcmp(zUri, "file:", 5)==0
+ ){
+ char *zOpt;
+ int eState; /* Parser state when parsing URI */
+ int iIn; /* Input character index */
+ int iOut = 0; /* Output character index */
+ int nByte = nUri+2; /* Bytes of space to allocate */
+
+ /* Make sure the SQLITE_OPEN_URI flag is set to indicate to the VFS xOpen
+ ** method that there may be extra parameters following the file-name. */
+ flags |= SQLITE_OPEN_URI;
+
+ for(iIn=0; iIn<nUri; iIn++) nByte += (zUri[iIn]=='&');
+ zFile = sqlite3_malloc(nByte);
+ if( !zFile ) return SQLITE_NOMEM;
+
+ /* Discard the scheme and authority segments of the URI. */
+ if( zUri[5]=='/' && zUri[6]=='/' ){
+ iIn = 7;
+ while( zUri[iIn] && zUri[iIn]!='/' ) iIn++;
+
+ if( iIn!=7 && (iIn!=16 || memcmp("localhost", &zUri[7], 9)) ){
+ *pzErrMsg = sqlite3_mprintf("invalid uri authority: %.*s",
+ iIn-7, &zUri[7]);
+ rc = SQLITE_ERROR;
+ goto parse_uri_out;
+ }
+ }else{
+ iIn = 5;
+ }
+
+ /* Copy the filename and any query parameters into the zFile buffer.
+ ** Decode %HH escape codes along the way.
+ **
+ ** Within this loop, variable eState may be set to 0, 1 or 2, depending
+ ** on the parsing context. As follows:
+ **
+ ** 0: Parsing file-name.
+ ** 1: Parsing name section of a name=value query parameter.
+ ** 2: Parsing value section of a name=value query parameter.
+ */
+ eState = 0;
+ while( (c = zUri[iIn])!=0 && c!='#' ){
+ iIn++;
+ if( c=='%'
+ && sqlite3Isxdigit(zUri[iIn])
+ && sqlite3Isxdigit(zUri[iIn+1])
+ ){
+ int octet = (sqlite3HexToInt(zUri[iIn++]) << 4);
+ octet += sqlite3HexToInt(zUri[iIn++]);
+
+ assert( octet>=0 && octet<256 );
+ if( octet==0 ){
+ /* This branch is taken when "%00" appears within the URI. In this
+ ** case we ignore all text in the remainder of the path, name or
+ ** value currently being parsed. So ignore the current character
+ ** and skip to the next "?", "=" or "&", as appropriate. */
+ while( (c = zUri[iIn])!=0 && c!='#'
+ && (eState!=0 || c!='?')
+ && (eState!=1 || (c!='=' && c!='&'))
+ && (eState!=2 || c!='&')
+ ){
+ iIn++;
+ }
+ continue;
+ }
+ c = octet;
+ }else if( eState==1 && (c=='&' || c=='=') ){
+ if( zFile[iOut-1]==0 ){
+ /* An empty option name. Ignore this option altogether. */
+ while( zUri[iIn] && zUri[iIn]!='#' && zUri[iIn-1]!='&' ) iIn++;
+ continue;
+ }
+ if( c=='&' ){
+ zFile[iOut++] = '\0';
+ }else{
+ eState = 2;
+ }
+ c = 0;
+ }else if( (eState==0 && c=='?') || (eState==2 && c=='&') ){
+ c = 0;
+ eState = 1;
+ }
+ zFile[iOut++] = c;
+ }
+ if( eState==1 ) zFile[iOut++] = '\0';
+ zFile[iOut++] = '\0';
+ zFile[iOut++] = '\0';
+
+ /* Check if there were any options specified that should be interpreted
+ ** here. Options that are interpreted here include "vfs" and those that
+ ** correspond to flags that may be passed to the sqlite3_open_v2()
+ ** method. */
+ zOpt = &zFile[sqlite3Strlen30(zFile)+1];
+ while( zOpt[0] ){
+ int nOpt = sqlite3Strlen30(zOpt);
+ char *zVal = &zOpt[nOpt+1];
+ int nVal = sqlite3Strlen30(zVal);
+
+ if( nOpt==3 && memcmp("vfs", zOpt, 3)==0 ){
+ zVfs = zVal;
+ }else{
+ struct OpenMode {
+ const char *z;
+ int mode;
+ } *aMode = 0;
+ char *zModeType = 0;
+ int mask = 0;
+ int limit = 0;
+
+ if( nOpt==5 && memcmp("cache", zOpt, 5)==0 ){
+ static struct OpenMode aCacheMode[] = {
+ { "shared", SQLITE_OPEN_SHAREDCACHE },
+ { "private", SQLITE_OPEN_PRIVATECACHE },
+ { 0, 0 }
+ };
+
+ mask = SQLITE_OPEN_SHAREDCACHE|SQLITE_OPEN_PRIVATECACHE;
+ aMode = aCacheMode;
+ limit = mask;
+ zModeType = "cache";
+ }
+ if( nOpt==4 && memcmp("mode", zOpt, 4)==0 ){
+ static struct OpenMode aOpenMode[] = {
+ { "ro", SQLITE_OPEN_READONLY },
+ { "rw", SQLITE_OPEN_READWRITE },
+ { "rwc", SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE },
+ { 0, 0 }
+ };
+
+ mask = SQLITE_OPEN_READONLY|SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE;
+ aMode = aOpenMode;
+ limit = mask & flags;
+ zModeType = "access";
+ }
+
+ if( aMode ){
+ int i;
+ int mode = 0;
+ for(i=0; aMode[i].z; i++){
+ const char *z = aMode[i].z;
+ if( nVal==sqlite3Strlen30(z) && 0==memcmp(zVal, z, nVal) ){
+ mode = aMode[i].mode;
+ break;
+ }
+ }
+ if( mode==0 ){
+ *pzErrMsg = sqlite3_mprintf("no such %s mode: %s", zModeType, zVal);
+ rc = SQLITE_ERROR;
+ goto parse_uri_out;
+ }
+ if( mode>limit ){
+ *pzErrMsg = sqlite3_mprintf("%s mode not allowed: %s",
+ zModeType, zVal);
+ rc = SQLITE_PERM;
+ goto parse_uri_out;
+ }
+ flags = (flags & ~mask) | mode;
+ }
+ }
+
+ zOpt = &zVal[nVal+1];
+ }
+
+ }else{
+ zFile = sqlite3_malloc(nUri+2);
+ if( !zFile ) return SQLITE_NOMEM;
+ memcpy(zFile, zUri, nUri);
+ zFile[nUri] = '\0';
+ zFile[nUri+1] = '\0';
+ }
+
+ *ppVfs = sqlite3_vfs_find(zVfs);
+ if( *ppVfs==0 ){
+ *pzErrMsg = sqlite3_mprintf("no such vfs: %s", zVfs);
+ rc = SQLITE_ERROR;
+ }
+ parse_uri_out:
+ if( rc!=SQLITE_OK ){
+ sqlite3_free(zFile);
+ zFile = 0;
+ }
+ *pFlags = flags;
+ *pzFile = zFile;
+ return rc;
+}
+
+
+/*
** This routine does the work of opening a database on behalf of
** sqlite3_open() and sqlite3_open16(). The database filename "zFilename"
** is UTF-8 encoded.
@@ -106542,12 +114273,14 @@
static int openDatabase(
const char *zFilename, /* Database filename UTF-8 encoded */
sqlite3 **ppDb, /* OUT: Returned database handle */
- unsigned flags, /* Operational flags */
+ unsigned int flags, /* Operational flags */
const char *zVfs /* Name of the VFS to use */
){
- sqlite3 *db;
- int rc;
- int isThreadsafe;
+ sqlite3 *db; /* Store allocated handle here */
+ int rc; /* Return code */
+ int isThreadsafe; /* True for threadsafe connections */
+ char *zOpen = 0; /* Filename argument to pass to BtreeOpen() */
+ char *zErrMsg = 0; /* Error message from sqlite3ParseUri() */
*ppDb = 0;
#ifndef SQLITE_OMIT_AUTOINIT
@@ -106571,7 +114304,7 @@
testcase( (1<<(flags&7))==0x02 ); /* READONLY */
testcase( (1<<(flags&7))==0x04 ); /* READWRITE */
testcase( (1<<(flags&7))==0x40 ); /* READWRITE | CREATE */
- if( ((1<<(flags&7)) & 0x46)==0 ) return SQLITE_MISUSE;
+ if( ((1<<(flags&7)) & 0x46)==0 ) return SQLITE_MISUSE_BKPT;
if( sqlite3GlobalConfig.bCoreMutex==0 ){
isThreadsafe = 0;
@@ -106593,7 +114326,8 @@
** The SQLITE_OPEN_NOMUTEX and SQLITE_OPEN_FULLMUTEX flags were
** dealt with in the previous code block. Besides these, the only
** valid input flags for sqlite3_open_v2() are SQLITE_OPEN_READONLY,
- ** SQLITE_OPEN_READWRITE, and SQLITE_OPEN_CREATE. Silently mask
+ ** SQLITE_OPEN_READWRITE, SQLITE_OPEN_CREATE, SQLITE_OPEN_SHAREDCACHE,
+ ** SQLITE_OPEN_PRIVATECACHE, and some reserved bits. Silently mask
** off all other flags.
*/
flags &= ~( SQLITE_OPEN_DELETEONCLOSE |
@@ -106632,7 +114366,7 @@
db->autoCommit = 1;
db->nextAutovac = -1;
db->nextPagesize = 0;
- db->flags |= SQLITE_ShortColNames | SQLITE_AutoIndex
+ db->flags |= SQLITE_ShortColNames | SQLITE_AutoIndex | SQLITE_EnableTrigger
#if SQLITE_DEFAULT_FILE_FORMAT<4
| SQLITE_LegacyFileFmt
#endif
@@ -106642,31 +114376,23 @@
#if SQLITE_DEFAULT_RECURSIVE_TRIGGERS
| SQLITE_RecTriggers
#endif
+#if defined(SQLITE_DEFAULT_FOREIGN_KEYS) && SQLITE_DEFAULT_FOREIGN_KEYS
+ | SQLITE_ForeignKeys
+#endif
;
sqlite3HashInit(&db->aCollSeq);
#ifndef SQLITE_OMIT_VIRTUALTABLE
sqlite3HashInit(&db->aModule);
#endif
- db->pVfs = sqlite3_vfs_find(zVfs);
- if( !db->pVfs ){
- rc = SQLITE_ERROR;
- sqlite3Error(db, rc, "no such vfs: %s", zVfs);
- goto opendb_out;
- }
-
/* Add the default collation sequence BINARY. BINARY works for both UTF-8
** and UTF-16, so add a version for each to avoid any unnecessary
** conversions. The only error that can occur here is a malloc() failure.
*/
- createCollation(db, "BINARY", SQLITE_UTF8, SQLITE_COLL_BINARY, 0,
- binCollFunc, 0);
- createCollation(db, "BINARY", SQLITE_UTF16BE, SQLITE_COLL_BINARY, 0,
- binCollFunc, 0);
- createCollation(db, "BINARY", SQLITE_UTF16LE, SQLITE_COLL_BINARY, 0,
- binCollFunc, 0);
- createCollation(db, "RTRIM", SQLITE_UTF8, SQLITE_COLL_USER, (void*)1,
- binCollFunc, 0);
+ createCollation(db, "BINARY", SQLITE_UTF8, 0, binCollFunc, 0);
+ createCollation(db, "BINARY", SQLITE_UTF16BE, 0, binCollFunc, 0);
+ createCollation(db, "BINARY", SQLITE_UTF16LE, 0, binCollFunc, 0);
+ createCollation(db, "RTRIM", SQLITE_UTF8, (void*)1, binCollFunc, 0);
if( db->mallocFailed ){
goto opendb_out;
}
@@ -106674,12 +114400,20 @@
assert( db->pDfltColl!=0 );
/* Also add a UTF-8 case-insensitive collation sequence. */
- createCollation(db, "NOCASE", SQLITE_UTF8, SQLITE_COLL_NOCASE, 0,
- nocaseCollatingFunc, 0);
+ createCollation(db, "NOCASE", SQLITE_UTF8, 0, nocaseCollatingFunc, 0);
+
+ /* Parse the filename/URI argument. */
+ db->openFlags = flags;
+ rc = sqlite3ParseUri(zVfs, zFilename, &flags, &db->pVfs, &zOpen, &zErrMsg);
+ if( rc!=SQLITE_OK ){
+ if( rc==SQLITE_NOMEM ) db->mallocFailed = 1;
+ sqlite3Error(db, rc, zErrMsg ? "%s" : 0, zErrMsg);
+ sqlite3_free(zErrMsg);
+ goto opendb_out;
+ }
/* Open the backend database driver */
- db->openFlags = flags;
- rc = sqlite3BtreeOpen(zFilename, db, &db->aDb[0].pBt, 0,
+ rc = sqlite3BtreeOpen(db->pVfs, zOpen, db, &db->aDb[0].pBt, 0,
flags | SQLITE_OPEN_MAIN_DB);
if( rc!=SQLITE_OK ){
if( rc==SQLITE_IOERR_NOMEM ){
@@ -106715,10 +114449,13 @@
/* Load automatic extensions - extensions that have been registered
** using the sqlite3_automatic_extension() API.
*/
- sqlite3AutoLoadExtensions(db);
rc = sqlite3_errcode(db);
- if( rc!=SQLITE_OK ){
- goto opendb_out;
+ if( rc==SQLITE_OK ){
+ sqlite3AutoLoadExtensions(db);
+ rc = sqlite3_errcode(db);
+ if( rc!=SQLITE_OK ){
+ goto opendb_out;
+ }
}
#ifdef SQLITE_ENABLE_FTS1
@@ -106787,11 +114524,13 @@
sqlite3_wal_autocheckpoint(db, SQLITE_DEFAULT_WAL_AUTOCHECKPOINT);
opendb_out:
+ sqlite3_free(zOpen);
if( db ){
assert( db->mutex!=0 || isThreadsafe==0 || sqlite3GlobalConfig.bFullMutex==0 );
sqlite3_mutex_leave(db->mutex);
}
rc = sqlite3_errcode(db);
+ assert( db!=0 || rc==SQLITE_NOMEM );
if( rc==SQLITE_NOMEM ){
sqlite3_close(db);
db = 0;
@@ -106818,7 +114557,7 @@
int flags, /* Flags */
const char *zVfs /* Name of VFS module to use */
){
- return openDatabase(filename, ppDb, flags, zVfs);
+ return openDatabase(filename, ppDb, (unsigned int)flags, zVfs);
}
#ifndef SQLITE_OMIT_UTF16
@@ -106872,7 +114611,7 @@
int rc;
sqlite3_mutex_enter(db->mutex);
assert( !db->mallocFailed );
- rc = createCollation(db, zName, (u8)enc, SQLITE_COLL_USER, pCtx, xCompare, 0);
+ rc = createCollation(db, zName, (u8)enc, pCtx, xCompare, 0);
rc = sqlite3ApiExit(db, rc);
sqlite3_mutex_leave(db->mutex);
return rc;
@@ -106892,7 +114631,7 @@
int rc;
sqlite3_mutex_enter(db->mutex);
assert( !db->mallocFailed );
- rc = createCollation(db, zName, (u8)enc, SQLITE_COLL_USER, pCtx, xCompare, xDel);
+ rc = createCollation(db, zName, (u8)enc, pCtx, xCompare, xDel);
rc = sqlite3ApiExit(db, rc);
sqlite3_mutex_leave(db->mutex);
return rc;
@@ -106915,7 +114654,7 @@
assert( !db->mallocFailed );
zName8 = sqlite3Utf16to8(db, zName, -1, SQLITE_UTF16NATIVE);
if( zName8 ){
- rc = createCollation(db, zName8, (u8)enc, SQLITE_COLL_USER, pCtx, xCompare, 0);
+ rc = createCollation(db, zName8, (u8)enc, pCtx, xCompare, 0);
sqlite3DbFree(db, zName8);
}
rc = sqlite3ApiExit(db, rc);
@@ -107196,6 +114935,8 @@
rc = SQLITE_OK;
}else if( fd->pMethods ){
rc = sqlite3OsFileControl(fd, op, pArg);
+ }else{
+ rc = SQLITE_NOTFOUND;
}
sqlite3BtreeLeave(pBtree);
}
@@ -107396,15 +115137,6 @@
}
#endif
- /* sqlite3_test_control(SQLITE_TESTCTRL_PGHDRSZ)
- **
- ** Return the size of a pcache header in bytes.
- */
- case SQLITE_TESTCTRL_PGHDRSZ: {
- rc = sizeof(PgHdr);
- break;
- }
-
/* sqlite3_test_control(SQLITE_TESTCTRL_SCRATCHMALLOC, sz, &pNew, pFree);
**
** Pass pFree into sqlite3ScratchFree().
@@ -107421,12 +115153,100 @@
break;
}
+ /* sqlite3_test_control(SQLITE_TESTCTRL_LOCALTIME_FAULT, int onoff);
+ **
+ ** If parameter onoff is non-zero, configure the wrappers so that all
+ ** subsequent calls to localtime() and variants fail. If onoff is zero,
+ ** undo this setting.
+ */
+ case SQLITE_TESTCTRL_LOCALTIME_FAULT: {
+ sqlite3GlobalConfig.bLocaltimeFault = va_arg(ap, int);
+ break;
+ }
+
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
+ /* sqlite3_test_control(SQLITE_TESTCTRL_EXPLAIN_STMT,
+ ** sqlite3_stmt*,const char**);
+ **
+ ** If compiled with SQLITE_ENABLE_TREE_EXPLAIN, each sqlite3_stmt holds
+ ** a string that describes the optimized parse tree. This test-control
+ ** returns a pointer to that string.
+ */
+ case SQLITE_TESTCTRL_EXPLAIN_STMT: {
+ sqlite3_stmt *pStmt = va_arg(ap, sqlite3_stmt*);
+ const char **pzRet = va_arg(ap, const char**);
+ *pzRet = sqlite3VdbeExplanation((Vdbe*)pStmt);
+ break;
+ }
+#endif
+
}
va_end(ap);
#endif /* SQLITE_OMIT_BUILTIN_TEST */
return rc;
}
+/*
+** This is a utility routine, useful to VFS implementations, that checks
+** to see if a database file was a URI that contained a specific query
+** parameter, and if so obtains the value of the query parameter.
+**
+** The zFilename argument is the filename pointer passed into the xOpen()
+** method of a VFS implementation. The zParam argument is the name of the
+** query parameter we seek. This routine returns the value of the zParam
+** parameter if it exists. If the parameter does not exist, this routine
+** returns a NULL pointer.
+*/
+SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam){
+ if( zFilename==0 ) return 0;
+ zFilename += sqlite3Strlen30(zFilename) + 1;
+ while( zFilename[0] ){
+ int x = strcmp(zFilename, zParam);
+ zFilename += sqlite3Strlen30(zFilename) + 1;
+ if( x==0 ) return zFilename;
+ zFilename += sqlite3Strlen30(zFilename) + 1;
+ }
+ return 0;
+}
+
+/*
+** Return a boolean value for a query parameter.
+*/
+SQLITE_API int sqlite3_uri_boolean(const char *zFilename, const char *zParam, int bDflt){
+ const char *z = sqlite3_uri_parameter(zFilename, zParam);
+ return z ? sqlite3GetBoolean(z) : (bDflt!=0);
+}
+
+/*
+** Return a 64-bit integer value for a query parameter.
+*/
+SQLITE_API sqlite3_int64 sqlite3_uri_int64(
+ const char *zFilename, /* Filename as passed to xOpen */
+ const char *zParam, /* URI parameter sought */
+ sqlite3_int64 bDflt /* return if parameter is missing */
+){
+ const char *z = sqlite3_uri_parameter(zFilename, zParam);
+ sqlite3_int64 v;
+ if( z && sqlite3Atoi64(z, &v, sqlite3Strlen30(z), SQLITE_UTF8)==SQLITE_OK ){
+ bDflt = v;
+ }
+ return bDflt;
+}
+
+/*
+** Return the filename of the database associated with a database
+** connection.
+*/
+SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName){
+ int i;
+ for(i=0; i<db->nDb; i++){
+ if( db->aDb[i].pBt && sqlite3StrICmp(zDbName, db->aDb[i].zName)==0 ){
+ return sqlite3BtreeGetFilename(db->aDb[i].pBt);
+ }
+ }
+ return 0;
+}
+
/************** End of main.c ************************************************/
/************** Begin file notify.c ******************************************/
/*
@@ -108056,12 +115876,6 @@
** into a single segment.
*/
-#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
-
-#if defined(SQLITE_ENABLE_FTS3) && !defined(SQLITE_CORE)
-# define SQLITE_CORE 1
-#endif
-
/************** Include fts3Int.h in the middle of fts3.c ********************/
/************** Begin file fts3Int.h *****************************************/
/*
@@ -108077,7 +115891,6 @@
******************************************************************************
**
*/
-
#ifndef _FTSINT_H
#define _FTSINT_H
@@ -108085,6 +115898,22 @@
# define NDEBUG 1
#endif
+/*
+** FTS4 is really an extension for FTS3. It is enabled using the
+** SQLITE_ENABLE_FTS3 macro. But to avoid confusion we also all
+** the SQLITE_ENABLE_FTS4 macro to serve as an alisse for SQLITE_ENABLE_FTS3.
+*/
+#if defined(SQLITE_ENABLE_FTS4) && !defined(SQLITE_ENABLE_FTS3)
+# define SQLITE_ENABLE_FTS3
+#endif
+
+#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
+
+/* If not building as part of the core, include sqlite3ext.h. */
+#ifndef SQLITE_CORE
+SQLITE_API extern const sqlite3_api_routines *sqlite3_api;
+#endif
+
/************** Include fts3_tokenizer.h in the middle of fts3Int.h **********/
/************** Begin file fts3_tokenizer.h **********************************/
/*
@@ -108383,6 +116212,11 @@
*/
#define SizeofArray(X) ((int)(sizeof(X)/sizeof(X[0])))
+
+#ifndef MIN
+# define MIN(x,y) ((x)<(y)?(x):(y))
+#endif
+
/*
** Maximum length of a varint encoded integer. The varint format is different
** from that used by SQLite, so the maximum length is 10, not 9.
@@ -108390,6 +116224,24 @@
#define FTS3_VARINT_MAX 10
/*
+** FTS4 virtual tables may maintain multiple indexes - one index of all terms
+** in the document set and zero or more prefix indexes. All indexes are stored
+** as one or more b+-trees in the %_segments and %_segdir tables.
+**
+** It is possible to determine which index a b+-tree belongs to based on the
+** value stored in the "%_segdir.level" column. Given this value L, the index
+** that the b+-tree belongs to is (L<<10). In other words, all b+-trees with
+** level values between 0 and 1023 (inclusive) belong to index 0, all levels
+** between 1024 and 2047 to index 1, and so on.
+**
+** It is considered impossible for an index to use more than 1024 levels. In
+** theory though this may happen, but only after at least
+** (FTS3_MERGE_COUNT^1024) separate flushes of the pending-terms tables.
+*/
+#define FTS3_SEGDIR_MAXLEVEL 1024
+#define FTS3_SEGDIR_MAXLEVEL_STR "1024"
+
+/*
** The testcase() macro is only used by the amalgamation. If undefined,
** make it a no-op.
*/
@@ -108428,10 +116280,37 @@
typedef short int i16; /* 2-byte (or larger) signed integer */
typedef unsigned int u32; /* 4-byte unsigned integer */
typedef sqlite3_uint64 u64; /* 8-byte unsigned integer */
+
/*
** Macro used to suppress compiler warnings for unused parameters.
*/
#define UNUSED_PARAMETER(x) (void)(x)
+
+/*
+** Activate assert() only if SQLITE_TEST is enabled.
+*/
+#if !defined(NDEBUG) && !defined(SQLITE_DEBUG)
+# define NDEBUG 1
+#endif
+
+/*
+** The TESTONLY macro is used to enclose variable declarations or
+** other bits of code that are needed to support the arguments
+** within testcase() and assert() macros.
+*/
+#if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST)
+# define TESTONLY(X) X
+#else
+# define TESTONLY(X)
+#endif
+
+#endif /* SQLITE_AMALGAMATION */
+
+#ifdef SQLITE_DEBUG
+SQLITE_PRIVATE int sqlite3Fts3Corrupt(void);
+# define FTS_CORRUPT_VTAB sqlite3Fts3Corrupt()
+#else
+# define FTS_CORRUPT_VTAB SQLITE_CORRUPT_VTAB
#endif
typedef struct Fts3Table Fts3Table;
@@ -108440,10 +116319,11 @@
typedef struct Fts3Phrase Fts3Phrase;
typedef struct Fts3PhraseToken Fts3PhraseToken;
+typedef struct Fts3Doclist Fts3Doclist;
typedef struct Fts3SegFilter Fts3SegFilter;
typedef struct Fts3DeferredToken Fts3DeferredToken;
typedef struct Fts3SegReader Fts3SegReader;
-typedef struct Fts3SegReaderArray Fts3SegReaderArray;
+typedef struct Fts3MultiSegReader Fts3MultiSegReader;
/*
** A connection to a fulltext index is an instance of the following
@@ -108460,30 +116340,56 @@
int nColumn; /* number of named columns in virtual table */
char **azColumn; /* column names. malloced */
sqlite3_tokenizer *pTokenizer; /* tokenizer for inserts and queries */
+ char *zContentTbl; /* content=xxx option, or NULL */
/* Precompiled statements used by the implementation. Each of these
** statements is run and reset within a single virtual table API call.
*/
- sqlite3_stmt *aStmt[24];
+ sqlite3_stmt *aStmt[27];
+
+ char *zReadExprlist;
+ char *zWriteExprlist;
int nNodeSize; /* Soft limit for node size */
u8 bHasStat; /* True if %_stat table exists */
u8 bHasDocsize; /* True if %_docsize table exists */
+ u8 bDescIdx; /* True if doclists are in reverse order */
int nPgsz; /* Page size for host database */
char *zSegmentsTbl; /* Name of %_segments table */
sqlite3_blob *pSegments; /* Blob handle open on %_segments table */
- /* The following hash table is used to buffer pending index updates during
+ /* TODO: Fix the first paragraph of this comment.
+ **
+ ** The following hash table is used to buffer pending index updates during
** transactions. Variable nPendingData estimates the memory size of the
** pending data, including hash table overhead, but not malloc overhead.
** When nPendingData exceeds nMaxPendingData, the buffer is flushed
** automatically. Variable iPrevDocid is the docid of the most recently
** inserted record.
+ **
+ ** A single FTS4 table may have multiple full-text indexes. For each index
+ ** there is an entry in the aIndex[] array. Index 0 is an index of all the
+ ** terms that appear in the document set. Each subsequent index in aIndex[]
+ ** is an index of prefixes of a specific length.
*/
- int nMaxPendingData;
- int nPendingData;
- sqlite_int64 iPrevDocid;
- Fts3Hash pendingTerms;
+ int nIndex; /* Size of aIndex[] */
+ struct Fts3Index {
+ int nPrefix; /* Prefix length (0 for main terms index) */
+ Fts3Hash hPending; /* Pending terms table for this index */
+ } *aIndex;
+ int nMaxPendingData; /* Max pending data before flush to disk */
+ int nPendingData; /* Current bytes of pending data */
+ sqlite_int64 iPrevDocid; /* Docid of most recently inserted document */
+
+#if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST)
+ /* State variables used for validating that the transaction control
+ ** methods of the virtual table are called at appropriate times. These
+ ** values do not contribution to the FTS computation; they are used for
+ ** verifying the SQLite core.
+ */
+ int inTransaction; /* True after xBegin but before xCommit/xRollback */
+ int mxSavepoint; /* Largest valid xSavepoint integer */
+#endif
};
/*
@@ -108504,8 +116410,10 @@
char *pNextId; /* Pointer into the body of aDoclist */
char *aDoclist; /* List of docids for full-text queries */
int nDoclist; /* Size of buffer at aDoclist */
+ u8 bDesc; /* True to sort in descending order */
int eEvalmode; /* An FTS3_EVAL_XX constant */
int nRowAvg; /* Average size of database rows, in pages */
+ sqlite3_int64 nDoc; /* Documents in table */
int isMatchinfoNeeded; /* True when aMatchinfo[] needs filling in */
u32 *aMatchinfo; /* Information about most recent match */
@@ -108536,47 +116444,71 @@
#define FTS3_DOCID_SEARCH 1 /* Lookup by rowid on %_content table */
#define FTS3_FULLTEXT_SEARCH 2 /* Full-text index search */
+
+struct Fts3Doclist {
+ char *aAll; /* Array containing doclist (or NULL) */
+ int nAll; /* Size of a[] in bytes */
+ char *pNextDocid; /* Pointer to next docid */
+
+ sqlite3_int64 iDocid; /* Current docid (if pList!=0) */
+ int bFreeList; /* True if pList should be sqlite3_free()d */
+ char *pList; /* Pointer to position list following iDocid */
+ int nList; /* Length of position list */
+};
+
/*
** A "phrase" is a sequence of one or more tokens that must match in
** sequence. A single token is the base case and the most common case.
** For a sequence of tokens contained in double-quotes (i.e. "one two three")
** nToken will be the number of tokens in the string.
-**
-** The nDocMatch and nMatch variables contain data that may be used by the
-** matchinfo() function. They are populated when the full-text index is
-** queried for hits on the phrase. If one or more tokens in the phrase
-** are deferred, the nDocMatch and nMatch variables are populated based
-** on the assumption that the
*/
struct Fts3PhraseToken {
char *z; /* Text of the token */
int n; /* Number of bytes in buffer z */
int isPrefix; /* True if token ends with a "*" character */
- int bFulltext; /* True if full-text index was used */
- Fts3SegReaderArray *pArray; /* Segment-reader for this token */
+ int bFirst; /* True if token must appear at position 0 */
+
+ /* Variables above this point are populated when the expression is
+ ** parsed (by code in fts3_expr.c). Below this point the variables are
+ ** used when evaluating the expression. */
Fts3DeferredToken *pDeferred; /* Deferred token object for this token */
+ Fts3MultiSegReader *pSegcsr; /* Segment-reader for this token */
};
struct Fts3Phrase {
- /* Variables populated by fts3_expr.c when parsing a MATCH expression */
+ /* Cache of doclist for this phrase. */
+ Fts3Doclist doclist;
+ int bIncr; /* True if doclist is loaded incrementally */
+ int iDoclistToken;
+
+ /* Variables below this point are populated by fts3_expr.c when parsing
+ ** a MATCH expression. Everything above is part of the evaluation phase.
+ */
int nToken; /* Number of tokens in the phrase */
int iColumn; /* Index of column this phrase must match */
- int isNot; /* Phrase prefixed by unary not (-) operator */
Fts3PhraseToken aToken[1]; /* One entry for each token in the phrase */
};
/*
** A tree of these objects forms the RHS of a MATCH operator.
**
-** If Fts3Expr.eType is either FTSQUERY_NEAR or FTSQUERY_PHRASE and isLoaded
-** is true, then aDoclist points to a malloced buffer, size nDoclist bytes,
-** containing the results of the NEAR or phrase query in FTS3 doclist
-** format. As usual, the initial "Length" field found in doclists stored
-** on disk is omitted from this buffer.
+** If Fts3Expr.eType is FTSQUERY_PHRASE and isLoaded is true, then aDoclist
+** points to a malloced buffer, size nDoclist bytes, containing the results
+** of this phrase query in FTS3 doclist format. As usual, the initial
+** "Length" field found in doclists stored on disk is omitted from this
+** buffer.
**
-** Variable pCurrent always points to the start of a docid field within
-** aDoclist. Since the doclist is usually scanned in docid order, this can
-** be used to accelerate seeking to the required docid within the doclist.
+** Variable aMI is used only for FTSQUERY_NEAR nodes to store the global
+** matchinfo data. If it is not NULL, it points to an array of size nCol*3,
+** where nCol is the number of columns in the queried FTS table. The array
+** is populated as follows:
+**
+** aMI[iCol*3 + 0] = Undefined
+** aMI[iCol*3 + 1] = Number of occurrences
+** aMI[iCol*3 + 2] = Number of rows containing at least one instance
+**
+** The aMI array is allocated using sqlite3_malloc(). It should be freed
+** when the expression node is.
*/
struct Fts3Expr {
int eType; /* One of the FTSQUERY_XXX values defined below */
@@ -108586,12 +116518,13 @@
Fts3Expr *pRight; /* Right operand */
Fts3Phrase *pPhrase; /* Valid if eType==FTSQUERY_PHRASE */
- int isLoaded; /* True if aDoclist/nDoclist are initialized. */
- char *aDoclist; /* Buffer containing doclist */
- int nDoclist; /* Size of aDoclist in bytes */
+ /* The following are used by the fts3_eval.c module. */
+ sqlite3_int64 iDocid; /* Current docid */
+ u8 bEof; /* True this expression is at EOF already */
+ u8 bStart; /* True if iDocid is valid */
+ u8 bDeferred; /* True if this expression is entirely deferred */
- sqlite3_int64 iCurrent;
- char *pCurrent;
+ u32 *aMI;
};
/*
@@ -108619,16 +116552,12 @@
SQLITE_PRIVATE int sqlite3Fts3Optimize(Fts3Table *);
SQLITE_PRIVATE int sqlite3Fts3SegReaderNew(int, sqlite3_int64,
sqlite3_int64, sqlite3_int64, const char *, int, Fts3SegReader**);
-SQLITE_PRIVATE int sqlite3Fts3SegReaderPending(Fts3Table*,const char*,int,int,Fts3SegReader**);
+SQLITE_PRIVATE int sqlite3Fts3SegReaderPending(
+ Fts3Table*,int,const char*,int,int,Fts3SegReader**);
SQLITE_PRIVATE void sqlite3Fts3SegReaderFree(Fts3SegReader *);
-SQLITE_PRIVATE int sqlite3Fts3SegReaderIterate(
- Fts3Table *, Fts3SegReader **, int, Fts3SegFilter *,
- int (*)(Fts3Table *, void *, char *, int, char *, int), void *
-);
-SQLITE_PRIVATE int sqlite3Fts3SegReaderCost(Fts3Cursor *, Fts3SegReader *, int *);
-SQLITE_PRIVATE int sqlite3Fts3AllSegdirs(Fts3Table*, sqlite3_stmt **);
+SQLITE_PRIVATE int sqlite3Fts3AllSegdirs(Fts3Table*, int, int, sqlite3_stmt **);
SQLITE_PRIVATE int sqlite3Fts3ReadLock(Fts3Table *);
-SQLITE_PRIVATE int sqlite3Fts3ReadBlock(Fts3Table*, sqlite3_int64, char **, int*);
+SQLITE_PRIVATE int sqlite3Fts3ReadBlock(Fts3Table*, sqlite3_int64, char **, int*, int*);
SQLITE_PRIVATE int sqlite3Fts3SelectDoctotal(Fts3Table *, sqlite3_stmt **);
SQLITE_PRIVATE int sqlite3Fts3SelectDocsize(Fts3Table *, sqlite3_int64, sqlite3_stmt **);
@@ -108637,15 +116566,26 @@
SQLITE_PRIVATE int sqlite3Fts3DeferToken(Fts3Cursor *, Fts3PhraseToken *, int);
SQLITE_PRIVATE int sqlite3Fts3CacheDeferredDoclists(Fts3Cursor *);
SQLITE_PRIVATE void sqlite3Fts3FreeDeferredDoclists(Fts3Cursor *);
-SQLITE_PRIVATE char *sqlite3Fts3DeferredDoclist(Fts3DeferredToken *, int *);
-
SQLITE_PRIVATE void sqlite3Fts3SegmentsClose(Fts3Table *);
+/* Special values interpreted by sqlite3SegReaderCursor() */
+#define FTS3_SEGCURSOR_PENDING -1
+#define FTS3_SEGCURSOR_ALL -2
+
+SQLITE_PRIVATE int sqlite3Fts3SegReaderStart(Fts3Table*, Fts3MultiSegReader*, Fts3SegFilter*);
+SQLITE_PRIVATE int sqlite3Fts3SegReaderStep(Fts3Table *, Fts3MultiSegReader *);
+SQLITE_PRIVATE void sqlite3Fts3SegReaderFinish(Fts3MultiSegReader *);
+
+SQLITE_PRIVATE int sqlite3Fts3SegReaderCursor(
+ Fts3Table *, int, int, const char *, int, int, int, Fts3MultiSegReader *);
+
/* Flags allowed as part of the 4th argument to SegmentReaderIterate() */
#define FTS3_SEGMENT_REQUIRE_POS 0x00000001
#define FTS3_SEGMENT_IGNORE_EMPTY 0x00000002
#define FTS3_SEGMENT_COLUMN_FILTER 0x00000004
#define FTS3_SEGMENT_PREFIX 0x00000008
+#define FTS3_SEGMENT_SCAN 0x00000010
+#define FTS3_SEGMENT_FIRST 0x00000020
/* Type passed as 4th argument to SegmentReaderIterate() */
struct Fts3SegFilter {
@@ -108655,17 +116595,38 @@
int flags;
};
+struct Fts3MultiSegReader {
+ /* Used internally by sqlite3Fts3SegReaderXXX() calls */
+ Fts3SegReader **apSegment; /* Array of Fts3SegReader objects */
+ int nSegment; /* Size of apSegment array */
+ int nAdvance; /* How many seg-readers to advance */
+ Fts3SegFilter *pFilter; /* Pointer to filter object */
+ char *aBuffer; /* Buffer to merge doclists in */
+ int nBuffer; /* Allocated size of aBuffer[] in bytes */
+
+ int iColFilter; /* If >=0, filter for this column */
+ int bRestart;
+
+ /* Used by fts3.c only. */
+ int nCost; /* Cost of running iterator */
+ int bLookup; /* True if a lookup of a single entry. */
+
+ /* Output values. Valid only after Fts3SegReaderStep() returns SQLITE_ROW. */
+ char *zTerm; /* Pointer to term buffer */
+ int nTerm; /* Size of zTerm in bytes */
+ char *aDoclist; /* Pointer to doclist buffer */
+ int nDoclist; /* Size of aDoclist[] in bytes */
+};
+
/* fts3.c */
SQLITE_PRIVATE int sqlite3Fts3PutVarint(char *, sqlite3_int64);
SQLITE_PRIVATE int sqlite3Fts3GetVarint(const char *, sqlite_int64 *);
SQLITE_PRIVATE int sqlite3Fts3GetVarint32(const char *, int *);
SQLITE_PRIVATE int sqlite3Fts3VarintLen(sqlite3_uint64);
SQLITE_PRIVATE void sqlite3Fts3Dequote(char *);
-
-SQLITE_PRIVATE char *sqlite3Fts3FindPositions(Fts3Expr *, sqlite3_int64, int);
-SQLITE_PRIVATE int sqlite3Fts3ExprLoadDoclist(Fts3Cursor *, Fts3Expr *);
-SQLITE_PRIVATE int sqlite3Fts3ExprLoadFtDoclist(Fts3Cursor *, Fts3Expr *, char **, int *);
-SQLITE_PRIVATE int sqlite3Fts3ExprNearTrim(Fts3Expr *, Fts3Expr *, int);
+SQLITE_PRIVATE void sqlite3Fts3DoclistPrev(int,char*,int,char**,sqlite3_int64*,int*,u8*);
+SQLITE_PRIVATE int sqlite3Fts3EvalPhraseStats(Fts3Cursor *, Fts3Expr *, u32 *);
+SQLITE_PRIVATE int sqlite3Fts3FirstFilter(sqlite3_int64, char *, int, char *);
/* fts3_tokenizer.c */
SQLITE_PRIVATE const char *sqlite3Fts3NextToken(const char *, int *);
@@ -108684,23 +116645,56 @@
/* fts3_expr.c */
SQLITE_PRIVATE int sqlite3Fts3ExprParse(sqlite3_tokenizer *,
- char **, int, int, const char *, int, Fts3Expr **
+ char **, int, int, int, const char *, int, Fts3Expr **
);
SQLITE_PRIVATE void sqlite3Fts3ExprFree(Fts3Expr *);
#ifdef SQLITE_TEST
SQLITE_PRIVATE int sqlite3Fts3ExprInitTestInterface(sqlite3 *db);
+SQLITE_PRIVATE int sqlite3Fts3InitTerm(sqlite3 *db);
#endif
+/* fts3_aux.c */
+SQLITE_PRIVATE int sqlite3Fts3InitAux(sqlite3 *db);
+
+SQLITE_PRIVATE void sqlite3Fts3EvalPhraseCleanup(Fts3Phrase *);
+
+SQLITE_PRIVATE int sqlite3Fts3MsrIncrStart(
+ Fts3Table*, Fts3MultiSegReader*, int, const char*, int);
+SQLITE_PRIVATE int sqlite3Fts3MsrIncrNext(
+ Fts3Table *, Fts3MultiSegReader *, sqlite3_int64 *, char **, int *);
+SQLITE_PRIVATE char *sqlite3Fts3EvalPhrasePoslist(Fts3Cursor *, Fts3Expr *, int iCol);
+SQLITE_PRIVATE int sqlite3Fts3MsrOvfl(Fts3Cursor *, Fts3MultiSegReader *, int *);
+SQLITE_PRIVATE int sqlite3Fts3MsrIncrRestart(Fts3MultiSegReader *pCsr);
+
+SQLITE_PRIVATE int sqlite3Fts3DeferredTokenList(Fts3DeferredToken *, char **, int *);
+
+#endif /* !SQLITE_CORE || SQLITE_ENABLE_FTS3 */
#endif /* _FTSINT_H */
/************** End of fts3Int.h *********************************************/
/************** Continuing where we left off in fts3.c ***********************/
+#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
+#if defined(SQLITE_ENABLE_FTS3) && !defined(SQLITE_CORE)
+# define SQLITE_CORE 1
+#endif
+
+/* #include <assert.h> */
+/* #include <stdlib.h> */
+/* #include <stddef.h> */
+/* #include <stdio.h> */
+/* #include <string.h> */
+/* #include <stdarg.h> */
#ifndef SQLITE_CORE
SQLITE_EXTENSION_INIT1
#endif
+static int fts3EvalNext(Fts3Cursor *pCsr);
+static int fts3EvalStart(Fts3Cursor *pCsr);
+static int fts3TermSegReaderCursor(
+ Fts3Cursor *, const char *, int, int, Fts3MultiSegReader **);
+
/*
** Write a 64-bit variable-length integer to memory starting at p[0].
** The length of data written will be between 1 and FTS3_VARINT_MAX bytes.
@@ -108808,17 +116802,31 @@
}
/*
-** As long as *pp has not reached its end (pEnd), then do the same
-** as fts3GetDeltaVarint(): read a single varint and add it to *pVal.
-** But if we have reached the end of the varint, just set *pp=0 and
-** leave *pVal unchanged.
+** When this function is called, *pp points to the first byte following a
+** varint that is part of a doclist (or position-list, or any other list
+** of varints). This function moves *pp to point to the start of that varint,
+** and sets *pVal by the varint value.
+**
+** Argument pStart points to the first byte of the doclist that the
+** varint is part of.
*/
-static void fts3GetDeltaVarint2(char **pp, char *pEnd, sqlite3_int64 *pVal){
- if( *pp>=pEnd ){
- *pp = 0;
- }else{
- fts3GetDeltaVarint(pp, pVal);
- }
+static void fts3GetReverseVarint(
+ char **pp,
+ char *pStart,
+ sqlite3_int64 *pVal
+){
+ sqlite3_int64 iVal;
+ char *p;
+
+ /* Pointer p now points at the first byte past the varint we are
+ ** interested in. So, unless the doclist is corrupt, the 0x80 bit is
+ ** clear on character p[-1]. */
+ for(p = (*pp)-2; p>=pStart && *p&0x80; p--);
+ p++;
+ *pp = p;
+
+ sqlite3Fts3GetVarint(p, &iVal);
+ *pVal = iVal;
}
/*
@@ -108836,6 +116844,9 @@
sqlite3_finalize(p->aStmt[i]);
}
sqlite3_free(p->zSegmentsTbl);
+ sqlite3_free(p->zReadExprlist);
+ sqlite3_free(p->zWriteExprlist);
+ sqlite3_free(p->zContentTbl);
/* Invoke the tokenizer destructor to free the tokenizer. */
p->pTokenizer->pModule->xDestroy(p->pTokenizer);
@@ -108875,16 +116886,19 @@
** The xDestroy() virtual table method.
*/
static int fts3DestroyMethod(sqlite3_vtab *pVtab){
- int rc = SQLITE_OK; /* Return code */
Fts3Table *p = (Fts3Table *)pVtab;
- sqlite3 *db = p->db;
+ int rc = SQLITE_OK; /* Return code */
+ const char *zDb = p->zDb; /* Name of database (e.g. "main", "temp") */
+ sqlite3 *db = p->db; /* Database handle */
/* Drop the shadow tables */
- fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_content'", p->zDb, p->zName);
- fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segments'", p->zDb,p->zName);
- fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segdir'", p->zDb, p->zName);
- fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_docsize'", p->zDb, p->zName);
- fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_stat'", p->zDb, p->zName);
+ if( p->zContentTbl==0 ){
+ fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_content'", zDb, p->zName);
+ }
+ fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segments'", zDb,p->zName);
+ fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segdir'", zDb, p->zName);
+ fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_docsize'", zDb, p->zName);
+ fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_stat'", zDb, p->zName);
/* If everything has worked, invoke fts3DisconnectMethod() to free the
** memory associated with the Fts3Table structure and return SQLITE_OK.
@@ -108910,6 +116924,8 @@
char *zSql; /* SQL statement passed to declare_vtab() */
char *zCols; /* List of user defined columns */
+ sqlite3_vtab_config(p->db, SQLITE_VTAB_CONSTRAINT_SUPPORT, 1);
+
/* Create a list of user columns for the virtual table */
zCols = sqlite3_mprintf("%Q, ", p->azColumn[0]);
for(i=1; zCols && i<p->nColumn; i++){
@@ -108944,23 +116960,27 @@
static int fts3CreateTables(Fts3Table *p){
int rc = SQLITE_OK; /* Return code */
int i; /* Iterator variable */
- char *zContentCols; /* Columns of %_content table */
sqlite3 *db = p->db; /* The database connection */
- /* Create a list of user columns for the content table */
- zContentCols = sqlite3_mprintf("docid INTEGER PRIMARY KEY");
- for(i=0; zContentCols && i<p->nColumn; i++){
- char *z = p->azColumn[i];
- zContentCols = sqlite3_mprintf("%z, 'c%d%q'", zContentCols, i, z);
- }
- if( zContentCols==0 ) rc = SQLITE_NOMEM;
+ if( p->zContentTbl==0 ){
+ char *zContentCols; /* Columns of %_content table */
- /* Create the content table */
- fts3DbExec(&rc, db,
- "CREATE TABLE %Q.'%q_content'(%s)",
- p->zDb, p->zName, zContentCols
- );
- sqlite3_free(zContentCols);
+ /* Create a list of user columns for the content table */
+ zContentCols = sqlite3_mprintf("docid INTEGER PRIMARY KEY");
+ for(i=0; zContentCols && i<p->nColumn; i++){
+ char *z = p->azColumn[i];
+ zContentCols = sqlite3_mprintf("%z, 'c%d%q'", zContentCols, i, z);
+ }
+ if( zContentCols==0 ) rc = SQLITE_NOMEM;
+
+ /* Create the content table */
+ fts3DbExec(&rc, db,
+ "CREATE TABLE %Q.'%q_content'(%s)",
+ p->zDb, p->zName, zContentCols
+ );
+ sqlite3_free(zContentCols);
+ }
+
/* Create other tables */
fts3DbExec(&rc, db,
"CREATE TABLE %Q.'%q_segments'(blockid INTEGER PRIMARY KEY, block BLOB);",
@@ -109015,6 +117035,9 @@
sqlite3_step(pStmt);
p->nPgsz = sqlite3_column_int(pStmt, 0);
rc = sqlite3_finalize(pStmt);
+ }else if( rc==SQLITE_AUTH ){
+ p->nPgsz = 1024;
+ rc = SQLITE_OK;
}
}
assert( p->nPgsz>0 || rc!=SQLITE_OK );
@@ -109054,6 +117077,320 @@
}
/*
+** Append the output of a printf() style formatting to an existing string.
+*/
+static void fts3Appendf(
+ int *pRc, /* IN/OUT: Error code */
+ char **pz, /* IN/OUT: Pointer to string buffer */
+ const char *zFormat, /* Printf format string to append */
+ ... /* Arguments for printf format string */
+){
+ if( *pRc==SQLITE_OK ){
+ va_list ap;
+ char *z;
+ va_start(ap, zFormat);
+ z = sqlite3_vmprintf(zFormat, ap);
+ va_end(ap);
+ if( z && *pz ){
+ char *z2 = sqlite3_mprintf("%s%s", *pz, z);
+ sqlite3_free(z);
+ z = z2;
+ }
+ if( z==0 ) *pRc = SQLITE_NOMEM;
+ sqlite3_free(*pz);
+ *pz = z;
+ }
+}
+
+/*
+** Return a copy of input string zInput enclosed in double-quotes (") and
+** with all double quote characters escaped. For example:
+**
+** fts3QuoteId("un \"zip\"") -> "un \"\"zip\"\""
+**
+** The pointer returned points to memory obtained from sqlite3_malloc(). It
+** is the callers responsibility to call sqlite3_free() to release this
+** memory.
+*/
+static char *fts3QuoteId(char const *zInput){
+ int nRet;
+ char *zRet;
+ nRet = 2 + strlen(zInput)*2 + 1;
+ zRet = sqlite3_malloc(nRet);
+ if( zRet ){
+ int i;
+ char *z = zRet;
+ *(z++) = '"';
+ for(i=0; zInput[i]; i++){
+ if( zInput[i]=='"' ) *(z++) = '"';
+ *(z++) = zInput[i];
+ }
+ *(z++) = '"';
+ *(z++) = '\0';
+ }
+ return zRet;
+}
+
+/*
+** Return a list of comma separated SQL expressions and a FROM clause that
+** could be used in a SELECT statement such as the following:
+**
+** SELECT <list of expressions> FROM %_content AS x ...
+**
+** to return the docid, followed by each column of text data in order
+** from left to write. If parameter zFunc is not NULL, then instead of
+** being returned directly each column of text data is passed to an SQL
+** function named zFunc first. For example, if zFunc is "unzip" and the
+** table has the three user-defined columns "a", "b", and "c", the following
+** string is returned:
+**
+** "docid, unzip(x.'a'), unzip(x.'b'), unzip(x.'c') FROM %_content AS x"
+**
+** The pointer returned points to a buffer allocated by sqlite3_malloc(). It
+** is the responsibility of the caller to eventually free it.
+**
+** If *pRc is not SQLITE_OK when this function is called, it is a no-op (and
+** a NULL pointer is returned). Otherwise, if an OOM error is encountered
+** by this function, NULL is returned and *pRc is set to SQLITE_NOMEM. If
+** no error occurs, *pRc is left unmodified.
+*/
+static char *fts3ReadExprList(Fts3Table *p, const char *zFunc, int *pRc){
+ char *zRet = 0;
+ char *zFree = 0;
+ char *zFunction;
+ int i;
+
+ if( p->zContentTbl==0 ){
+ if( !zFunc ){
+ zFunction = "";
+ }else{
+ zFree = zFunction = fts3QuoteId(zFunc);
+ }
+ fts3Appendf(pRc, &zRet, "docid");
+ for(i=0; i<p->nColumn; i++){
+ fts3Appendf(pRc, &zRet, ",%s(x.'c%d%q')", zFunction, i, p->azColumn[i]);
+ }
+ sqlite3_free(zFree);
+ }else{
+ fts3Appendf(pRc, &zRet, "rowid");
+ for(i=0; i<p->nColumn; i++){
+ fts3Appendf(pRc, &zRet, ", x.'%q'", p->azColumn[i]);
+ }
+ }
+ fts3Appendf(pRc, &zRet, "FROM '%q'.'%q%s' AS x",
+ p->zDb,
+ (p->zContentTbl ? p->zContentTbl : p->zName),
+ (p->zContentTbl ? "" : "_content")
+ );
+ return zRet;
+}
+
+/*
+** Return a list of N comma separated question marks, where N is the number
+** of columns in the %_content table (one for the docid plus one for each
+** user-defined text column).
+**
+** If argument zFunc is not NULL, then all but the first question mark
+** is preceded by zFunc and an open bracket, and followed by a closed
+** bracket. For example, if zFunc is "zip" and the FTS3 table has three
+** user-defined text columns, the following string is returned:
+**
+** "?, zip(?), zip(?), zip(?)"
+**
+** The pointer returned points to a buffer allocated by sqlite3_malloc(). It
+** is the responsibility of the caller to eventually free it.
+**
+** If *pRc is not SQLITE_OK when this function is called, it is a no-op (and
+** a NULL pointer is returned). Otherwise, if an OOM error is encountered
+** by this function, NULL is returned and *pRc is set to SQLITE_NOMEM. If
+** no error occurs, *pRc is left unmodified.
+*/
+static char *fts3WriteExprList(Fts3Table *p, const char *zFunc, int *pRc){
+ char *zRet = 0;
+ char *zFree = 0;
+ char *zFunction;
+ int i;
+
+ if( !zFunc ){
+ zFunction = "";
+ }else{
+ zFree = zFunction = fts3QuoteId(zFunc);
+ }
+ fts3Appendf(pRc, &zRet, "?");
+ for(i=0; i<p->nColumn; i++){
+ fts3Appendf(pRc, &zRet, ",%s(?)", zFunction);
+ }
+ sqlite3_free(zFree);
+ return zRet;
+}
+
+/*
+** This function interprets the string at (*pp) as a non-negative integer
+** value. It reads the integer and sets *pnOut to the value read, then
+** sets *pp to point to the byte immediately following the last byte of
+** the integer value.
+**
+** Only decimal digits ('0'..'9') may be part of an integer value.
+**
+** If *pp does not being with a decimal digit SQLITE_ERROR is returned and
+** the output value undefined. Otherwise SQLITE_OK is returned.
+**
+** This function is used when parsing the "prefix=" FTS4 parameter.
+*/
+static int fts3GobbleInt(const char **pp, int *pnOut){
+ const char *p; /* Iterator pointer */
+ int nInt = 0; /* Output value */
+
+ for(p=*pp; p[0]>='0' && p[0]<='9'; p++){
+ nInt = nInt * 10 + (p[0] - '0');
+ }
+ if( p==*pp ) return SQLITE_ERROR;
+ *pnOut = nInt;
+ *pp = p;
+ return SQLITE_OK;
+}
+
+/*
+** This function is called to allocate an array of Fts3Index structures
+** representing the indexes maintained by the current FTS table. FTS tables
+** always maintain the main "terms" index, but may also maintain one or
+** more "prefix" indexes, depending on the value of the "prefix=" parameter
+** (if any) specified as part of the CREATE VIRTUAL TABLE statement.
+**
+** Argument zParam is passed the value of the "prefix=" option if one was
+** specified, or NULL otherwise.
+**
+** If no error occurs, SQLITE_OK is returned and *apIndex set to point to
+** the allocated array. *pnIndex is set to the number of elements in the
+** array. If an error does occur, an SQLite error code is returned.
+**
+** Regardless of whether or not an error is returned, it is the responsibility
+** of the caller to call sqlite3_free() on the output array to free it.
+*/
+static int fts3PrefixParameter(
+ const char *zParam, /* ABC in prefix=ABC parameter to parse */
+ int *pnIndex, /* OUT: size of *apIndex[] array */
+ struct Fts3Index **apIndex /* OUT: Array of indexes for this table */
+){
+ struct Fts3Index *aIndex; /* Allocated array */
+ int nIndex = 1; /* Number of entries in array */
+
+ if( zParam && zParam[0] ){
+ const char *p;
+ nIndex++;
+ for(p=zParam; *p; p++){
+ if( *p==',' ) nIndex++;
+ }
+ }
+
+ aIndex = sqlite3_malloc(sizeof(struct Fts3Index) * nIndex);
+ *apIndex = aIndex;
+ *pnIndex = nIndex;
+ if( !aIndex ){
+ return SQLITE_NOMEM;
+ }
+
+ memset(aIndex, 0, sizeof(struct Fts3Index) * nIndex);
+ if( zParam ){
+ const char *p = zParam;
+ int i;
+ for(i=1; i<nIndex; i++){
+ int nPrefix;
+ if( fts3GobbleInt(&p, &nPrefix) ) return SQLITE_ERROR;
+ aIndex[i].nPrefix = nPrefix;
+ p++;
+ }
+ }
+
+ return SQLITE_OK;
+}
+
+/*
+** This function is called when initializing an FTS4 table that uses the
+** content=xxx option. It determines the number of and names of the columns
+** of the new FTS4 table.
+**
+** The third argument passed to this function is the value passed to the
+** config=xxx option (i.e. "xxx"). This function queries the database for
+** a table of that name. If found, the output variables are populated
+** as follows:
+**
+** *pnCol: Set to the number of columns table xxx has,
+**
+** *pnStr: Set to the total amount of space required to store a copy
+** of each columns name, including the nul-terminator.
+**
+** *pazCol: Set to point to an array of *pnCol strings. Each string is
+** the name of the corresponding column in table xxx. The array
+** and its contents are allocated using a single allocation. It
+** is the responsibility of the caller to free this allocation
+** by eventually passing the *pazCol value to sqlite3_free().
+**
+** If the table cannot be found, an error code is returned and the output
+** variables are undefined. Or, if an OOM is encountered, SQLITE_NOMEM is
+** returned (and the output variables are undefined).
+*/
+static int fts3ContentColumns(
+ sqlite3 *db, /* Database handle */
+ const char *zDb, /* Name of db (i.e. "main", "temp" etc.) */
+ const char *zTbl, /* Name of content table */
+ const char ***pazCol, /* OUT: Malloc'd array of column names */
+ int *pnCol, /* OUT: Size of array *pazCol */
+ int *pnStr /* OUT: Bytes of string content */
+){
+ int rc = SQLITE_OK; /* Return code */
+ char *zSql; /* "SELECT *" statement on zTbl */
+ sqlite3_stmt *pStmt = 0; /* Compiled version of zSql */
+
+ zSql = sqlite3_mprintf("SELECT * FROM %Q.%Q", zDb, zTbl);
+ if( !zSql ){
+ rc = SQLITE_NOMEM;
+ }else{
+ rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0);
+ }
+ sqlite3_free(zSql);
+
+ if( rc==SQLITE_OK ){
+ const char **azCol; /* Output array */
+ int nStr = 0; /* Size of all column names (incl. 0x00) */
+ int nCol; /* Number of table columns */
+ int i; /* Used to iterate through columns */
+
+ /* Loop through the returned columns. Set nStr to the number of bytes of
+ ** space required to store a copy of each column name, including the
+ ** nul-terminator byte. */
+ nCol = sqlite3_column_count(pStmt);
+ for(i=0; i<nCol; i++){
+ const char *zCol = sqlite3_column_name(pStmt, i);
+ nStr += strlen(zCol) + 1;
+ }
+
+ /* Allocate and populate the array to return. */
+ azCol = (const char **)sqlite3_malloc(sizeof(char *) * nCol + nStr);
+ if( azCol==0 ){
+ rc = SQLITE_NOMEM;
+ }else{
+ char *p = (char *)&azCol[nCol];
+ for(i=0; i<nCol; i++){
+ const char *zCol = sqlite3_column_name(pStmt, i);
+ int n = strlen(zCol)+1;
+ memcpy(p, zCol, n);
+ azCol[i] = p;
+ p += n;
+ }
+ }
+ sqlite3_finalize(pStmt);
+
+ /* Set the output variables. */
+ *pnCol = nCol;
+ *pnStr = nStr;
+ *pazCol = azCol;
+ }
+
+ return rc;
+}
+
+/*
** This function is the implementation of both the xConnect and xCreate
** methods of the FTS3 virtual table.
**
@@ -109085,10 +117422,20 @@
int nDb; /* Bytes required to hold database name */
int nName; /* Bytes required to hold table name */
int isFts4 = (argv[0][3]=='4'); /* True for FTS4, false for FTS3 */
- int bNoDocsize = 0; /* True to omit %_docsize table */
const char **aCol; /* Array of column names */
sqlite3_tokenizer *pTokenizer = 0; /* Tokenizer for this table */
+ int nIndex; /* Size of aIndex[] array */
+ struct Fts3Index *aIndex = 0; /* Array of indexes for this table */
+
+ /* The results of parsing supported FTS4 key=value options: */
+ int bNoDocsize = 0; /* True to omit %_docsize table */
+ int bDescIdx = 0; /* True to store descending indexes */
+ char *zPrefix = 0; /* Prefix parameter value (or NULL) */
+ char *zCompress = 0; /* compress=? parameter (or NULL) */
+ char *zUncompress = 0; /* uncompress=? parameter (or NULL) */
+ char *zContent = 0; /* content=? parameter (or NULL) */
+
assert( strlen(argv[0])==4 );
assert( (sqlite3_strnicmp(argv[0], "fts4", 4)==0 && isFts4)
|| (sqlite3_strnicmp(argv[0], "fts3", 4)==0 && !isFts4)
@@ -109128,22 +117475,79 @@
/* Check if it is an FTS4 special argument. */
else if( isFts4 && fts3IsSpecialColumn(z, &nKey, &zVal) ){
+ struct Fts4Option {
+ const char *zOpt;
+ int nOpt;
+ } aFts4Opt[] = {
+ { "matchinfo", 9 }, /* 0 -> MATCHINFO */
+ { "prefix", 6 }, /* 1 -> PREFIX */
+ { "compress", 8 }, /* 2 -> COMPRESS */
+ { "uncompress", 10 }, /* 3 -> UNCOMPRESS */
+ { "order", 5 }, /* 4 -> ORDER */
+ { "content", 7 } /* 5 -> CONTENT */
+ };
+
+ int iOpt;
if( !zVal ){
rc = SQLITE_NOMEM;
- goto fts3_init_out;
- }
- if( nKey==9 && 0==sqlite3_strnicmp(z, "matchinfo", 9) ){
- if( strlen(zVal)==4 && 0==sqlite3_strnicmp(zVal, "fts3", 4) ){
- bNoDocsize = 1;
- }else{
- *pzErr = sqlite3_mprintf("unrecognized matchinfo: %s", zVal);
- rc = SQLITE_ERROR;
- }
}else{
- *pzErr = sqlite3_mprintf("unrecognized parameter: %s", z);
- rc = SQLITE_ERROR;
+ for(iOpt=0; iOpt<SizeofArray(aFts4Opt); iOpt++){
+ struct Fts4Option *pOp = &aFts4Opt[iOpt];
+ if( nKey==pOp->nOpt && !sqlite3_strnicmp(z, pOp->zOpt, pOp->nOpt) ){
+ break;
+ }
+ }
+ if( iOpt==SizeofArray(aFts4Opt) ){
+ *pzErr = sqlite3_mprintf("unrecognized parameter: %s", z);
+ rc = SQLITE_ERROR;
+ }else{
+ switch( iOpt ){
+ case 0: /* MATCHINFO */
+ if( strlen(zVal)!=4 || sqlite3_strnicmp(zVal, "fts3", 4) ){
+ *pzErr = sqlite3_mprintf("unrecognized matchinfo: %s", zVal);
+ rc = SQLITE_ERROR;
+ }
+ bNoDocsize = 1;
+ break;
+
+ case 1: /* PREFIX */
+ sqlite3_free(zPrefix);
+ zPrefix = zVal;
+ zVal = 0;
+ break;
+
+ case 2: /* COMPRESS */
+ sqlite3_free(zCompress);
+ zCompress = zVal;
+ zVal = 0;
+ break;
+
+ case 3: /* UNCOMPRESS */
+ sqlite3_free(zUncompress);
+ zUncompress = zVal;
+ zVal = 0;
+ break;
+
+ case 4: /* ORDER */
+ if( (strlen(zVal)!=3 || sqlite3_strnicmp(zVal, "asc", 3))
+ && (strlen(zVal)!=4 || sqlite3_strnicmp(zVal, "desc", 4))
+ ){
+ *pzErr = sqlite3_mprintf("unrecognized order: %s", zVal);
+ rc = SQLITE_ERROR;
+ }
+ bDescIdx = (zVal[0]=='d' || zVal[0]=='D');
+ break;
+
+ default: /* CONTENT */
+ assert( iOpt==5 );
+ sqlite3_free(zUncompress);
+ zContent = zVal;
+ zVal = 0;
+ break;
+ }
+ }
+ sqlite3_free(zVal);
}
- sqlite3_free(zVal);
}
/* Otherwise, the argument is a column name. */
@@ -109152,6 +117556,26 @@
aCol[nCol++] = z;
}
}
+
+ /* If a content=xxx option was specified, the following:
+ **
+ ** 1. Ignore any compress= and uncompress= options.
+ **
+ ** 2. If no column names were specified as part of the CREATE VIRTUAL
+ ** TABLE statement, use all columns from the content table.
+ */
+ if( rc==SQLITE_OK && zContent ){
+ sqlite3_free(zCompress);
+ sqlite3_free(zUncompress);
+ zCompress = 0;
+ zUncompress = 0;
+ if( nCol==0 ){
+ sqlite3_free((void*)aCol);
+ aCol = 0;
+ rc = fts3ContentColumns(db, argv[1], zContent, &aCol, &nCol, &nString);
+ }
+ assert( rc!=SQLITE_OK || nCol>0 );
+ }
if( rc!=SQLITE_OK ) goto fts3_init_out;
if( nCol==0 ){
@@ -109167,10 +117591,17 @@
}
assert( pTokenizer );
+ rc = fts3PrefixParameter(zPrefix, &nIndex, &aIndex);
+ if( rc==SQLITE_ERROR ){
+ assert( zPrefix );
+ *pzErr = sqlite3_mprintf("error parsing prefix parameter: %s", zPrefix);
+ }
+ if( rc!=SQLITE_OK ) goto fts3_init_out;
/* Allocate and populate the Fts3Table structure. */
- nByte = sizeof(Fts3Table) + /* Fts3Table */
+ nByte = sizeof(Fts3Table) + /* Fts3Table */
nCol * sizeof(char *) + /* azColumn */
+ nIndex * sizeof(struct Fts3Index) + /* aIndex */
nName + /* zName */
nDb + /* zDb */
nString; /* Space for azColumn strings */
@@ -109185,14 +117616,24 @@
p->nPendingData = 0;
p->azColumn = (char **)&p[1];
p->pTokenizer = pTokenizer;
- p->nNodeSize = 1000;
p->nMaxPendingData = FTS3_MAX_PENDING_DATA;
p->bHasDocsize = (isFts4 && bNoDocsize==0);
p->bHasStat = isFts4;
- fts3HashInit(&p->pendingTerms, FTS3_HASH_STRING, 1);
+ p->bDescIdx = bDescIdx;
+ p->zContentTbl = zContent;
+ zContent = 0;
+ TESTONLY( p->inTransaction = -1 );
+ TESTONLY( p->mxSavepoint = -1 );
+
+ p->aIndex = (struct Fts3Index *)&p->azColumn[nCol];
+ memcpy(p->aIndex, aIndex, sizeof(struct Fts3Index) * nIndex);
+ p->nIndex = nIndex;
+ for(i=0; i<nIndex; i++){
+ fts3HashInit(&p->aIndex[i].hPending, FTS3_HASH_STRING, 1);
+ }
/* Fill in the zName and zDb fields of the vtab structure. */
- zCsr = (char *)&p->azColumn[nCol];
+ zCsr = (char *)&p->aIndex[nIndex];
p->zName = zCsr;
memcpy(zCsr, argv[2], nName);
zCsr += nName;
@@ -109203,7 +117644,7 @@
/* Fill in the azColumn array */
for(iCol=0; iCol<nCol; iCol++){
char *z;
- int n;
+ int n = 0;
z = (char *)sqlite3Fts3NextToken(aCol[iCol], &n);
memcpy(zCsr, z, n);
zCsr[n] = '\0';
@@ -109213,6 +117654,15 @@
assert( zCsr <= &((char *)p)[nByte] );
}
+ if( (zCompress==0)!=(zUncompress==0) ){
+ char const *zMiss = (zCompress==0 ? "compress" : "uncompress");
+ rc = SQLITE_ERROR;
+ *pzErr = sqlite3_mprintf("missing %s parameter in fts4 constructor", zMiss);
+ }
+ p->zReadExprlist = fts3ReadExprList(p, zUncompress, &rc);
+ p->zWriteExprlist = fts3WriteExprList(p, zCompress, &rc);
+ if( rc!=SQLITE_OK ) goto fts3_init_out;
+
/* If this is an xCreate call, create the underlying tables in the
** database. TODO: For xConnect(), it could verify that said tables exist.
*/
@@ -109221,16 +117671,19 @@
}
/* Figure out the page-size for the database. This is required in order to
- ** estimate the cost of loading large doclists from the database (see
- ** function sqlite3Fts3SegReaderCost() for details).
- */
+ ** estimate the cost of loading large doclists from the database. */
fts3DatabasePageSize(&rc, p);
+ p->nNodeSize = p->nPgsz-35;
/* Declare the table schema to SQLite. */
fts3DeclareVtab(&rc, p);
fts3_init_out:
-
+ sqlite3_free(zPrefix);
+ sqlite3_free(aIndex);
+ sqlite3_free(zCompress);
+ sqlite3_free(zUncompress);
+ sqlite3_free(zContent);
sqlite3_free((void *)aCol);
if( rc!=SQLITE_OK ){
if( p ){
@@ -109239,6 +117692,7 @@
pTokenizer->pModule->xDestroy(pTokenizer);
}
}else{
+ assert( p->pSegments==0 );
*ppVTab = &p->base;
}
return rc;
@@ -109324,6 +117778,23 @@
pInfo->aConstraintUsage[iCons].argvIndex = 1;
pInfo->aConstraintUsage[iCons].omit = 1;
}
+
+ /* Regardless of the strategy selected, FTS can deliver rows in rowid (or
+ ** docid) order. Both ascending and descending are possible.
+ */
+ if( pInfo->nOrderBy==1 ){
+ struct sqlite3_index_orderby *pOrder = &pInfo->aOrderBy[0];
+ if( pOrder->iColumn<0 || pOrder->iColumn==p->nColumn+1 ){
+ if( pOrder->desc ){
+ pInfo->idxStr = "DESC";
+ }else{
+ pInfo->idxStr = "ASC";
+ }
+ pInfo->orderByConsumed = 1;
+ }
+ }
+
+ assert( p->pSegments==0 );
return SQLITE_OK;
}
@@ -109359,39 +117830,69 @@
sqlite3Fts3FreeDeferredTokens(pCsr);
sqlite3_free(pCsr->aDoclist);
sqlite3_free(pCsr->aMatchinfo);
+ assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 );
sqlite3_free(pCsr);
return SQLITE_OK;
}
/*
+** If pCsr->pStmt has not been prepared (i.e. if pCsr->pStmt==0), then
+** compose and prepare an SQL statement of the form:
+**
+** "SELECT <columns> FROM %_content WHERE rowid = ?"
+**
+** (or the equivalent for a content=xxx table) and set pCsr->pStmt to
+** it. If an error occurs, return an SQLite error code.
+**
+** Otherwise, set *ppStmt to point to pCsr->pStmt and return SQLITE_OK.
+*/
+static int fts3CursorSeekStmt(Fts3Cursor *pCsr, sqlite3_stmt **ppStmt){
+ int rc = SQLITE_OK;
+ if( pCsr->pStmt==0 ){
+ Fts3Table *p = (Fts3Table *)pCsr->base.pVtab;
+ char *zSql;
+ zSql = sqlite3_mprintf("SELECT %s WHERE rowid = ?", p->zReadExprlist);
+ if( !zSql ) return SQLITE_NOMEM;
+ rc = sqlite3_prepare_v2(p->db, zSql, -1, &pCsr->pStmt, 0);
+ sqlite3_free(zSql);
+ }
+ *ppStmt = pCsr->pStmt;
+ return rc;
+}
+
+/*
** Position the pCsr->pStmt statement so that it is on the row
** of the %_content table that contains the last match. Return
** SQLITE_OK on success.
*/
static int fts3CursorSeek(sqlite3_context *pContext, Fts3Cursor *pCsr){
+ int rc = SQLITE_OK;
if( pCsr->isRequireSeek ){
- pCsr->isRequireSeek = 0;
- sqlite3_bind_int64(pCsr->pStmt, 1, pCsr->iPrevId);
- if( SQLITE_ROW==sqlite3_step(pCsr->pStmt) ){
- return SQLITE_OK;
- }else{
- int rc = sqlite3_reset(pCsr->pStmt);
- if( rc==SQLITE_OK ){
- /* If no row was found and no error has occured, then the %_content
- ** table is missing a row that is present in the full-text index.
- ** The data structures are corrupt.
- */
- rc = SQLITE_CORRUPT;
+ sqlite3_stmt *pStmt = 0;
+
+ rc = fts3CursorSeekStmt(pCsr, &pStmt);
+ if( rc==SQLITE_OK ){
+ sqlite3_bind_int64(pCsr->pStmt, 1, pCsr->iPrevId);
+ pCsr->isRequireSeek = 0;
+ if( SQLITE_ROW==sqlite3_step(pCsr->pStmt) ){
+ return SQLITE_OK;
+ }else{
+ rc = sqlite3_reset(pCsr->pStmt);
+ if( rc==SQLITE_OK && ((Fts3Table *)pCsr->base.pVtab)->zContentTbl==0 ){
+ /* If no row was found and no error has occured, then the %_content
+ ** table is missing a row that is present in the full-text index.
+ ** The data structures are corrupt. */
+ rc = FTS_CORRUPT_VTAB;
+ pCsr->isEof = 1;
+ }
}
- pCsr->isEof = 1;
- if( pContext ){
- sqlite3_result_error_code(pContext, rc);
- }
- return rc;
}
- }else{
- return SQLITE_OK;
}
+
+ if( rc!=SQLITE_OK && pContext ){
+ sqlite3_result_error_code(pContext, rc);
+ }
+ return rc;
}
/*
@@ -109441,7 +117942,7 @@
zCsr += sqlite3Fts3GetVarint(zCsr, &iChild);
zCsr += sqlite3Fts3GetVarint(zCsr, &iChild);
if( zCsr>zEnd ){
- return SQLITE_CORRUPT;
+ return FTS_CORRUPT_VTAB;
}
while( zCsr<zEnd && (piFirst || piLast) ){
@@ -109459,7 +117960,7 @@
zCsr += sqlite3Fts3GetVarint32(zCsr, &nSuffix);
if( nPrefix<0 || nSuffix<0 || &zCsr[nSuffix]>zEnd ){
- rc = SQLITE_CORRUPT;
+ rc = FTS_CORRUPT_VTAB;
goto finish_scan;
}
if( nPrefix+nSuffix>nAlloc ){
@@ -109472,6 +117973,7 @@
}
zBuffer = zNew;
}
+ assert( zBuffer );
memcpy(&zBuffer[nPrefix], zCsr, nSuffix);
nBuffer = nPrefix + nSuffix;
zCsr += nSuffix;
@@ -109552,7 +118054,7 @@
int nBlob; /* Size of zBlob in bytes */
if( piLeaf && piLeaf2 && (*piLeaf!=*piLeaf2) ){
- rc = sqlite3Fts3ReadBlock(p, *piLeaf, &zBlob, &nBlob);
+ rc = sqlite3Fts3ReadBlock(p, *piLeaf, &zBlob, &nBlob, 0);
if( rc==SQLITE_OK ){
rc = fts3SelectLeaf(p, zTerm, nTerm, zBlob, nBlob, piLeaf, 0);
}
@@ -109562,7 +118064,7 @@
}
if( rc==SQLITE_OK ){
- rc = sqlite3Fts3ReadBlock(p, piLeaf ? *piLeaf : *piLeaf2, &zBlob, &nBlob);
+ rc = sqlite3Fts3ReadBlock(p, piLeaf?*piLeaf:*piLeaf2, &zBlob, &nBlob, 0);
}
if( rc==SQLITE_OK ){
rc = fts3SelectLeaf(p, zTerm, nTerm, zBlob, nBlob, piLeaf, piLeaf2);
@@ -109800,8 +118302,6 @@
}
/*
-** nToken==1 searches for adjacent positions.
-**
** This function is used to merge two position lists into one. When it is
** called, *pp1 and *pp2 must both point to position lists. A position-list is
** the part of a doclist that follows each document id. For example, if a row
@@ -109821,6 +118321,8 @@
** *pp1 so that (pos(*pp2)>pos(*pp1) && pos(*pp2)-pos(*pp1)<=nToken). i.e.
** when the *pp1 token appears before the *pp2 token, but not more than nToken
** slots before it.
+**
+** e.g. nToken==1 searches for adjacent positions.
*/
static int fts3PoslistPhraseMerge(
char **pp, /* IN/OUT: Preallocated output buffer */
@@ -109830,7 +118332,7 @@
char **pp1, /* IN/OUT: Left input list */
char **pp2 /* IN/OUT: Right input list */
){
- char *p = (pp ? *pp : 0);
+ char *p = *pp;
char *p1 = *pp1;
char *p2 = *pp2;
int iCol1 = 0;
@@ -109839,7 +118341,7 @@
/* Never set both isSaveLeft and isExact for the same invocation. */
assert( isSaveLeft==0 || isExact==0 );
- assert( *p1!=0 && *p2!=0 );
+ assert( p!=0 && *p1!=0 && *p2!=0 );
if( *p1==POS_COLUMN ){
p1++;
p1 += sqlite3Fts3GetVarint32(p1, &iCol1);
@@ -109856,7 +118358,7 @@
sqlite3_int64 iPos1 = 0;
sqlite3_int64 iPos2 = 0;
- if( pp && iCol1 ){
+ if( iCol1 ){
*p++ = POS_COLUMN;
p += sqlite3Fts3PutVarint(p, iCol1);
}
@@ -109871,16 +118373,10 @@
|| (isExact==0 && iPos2>iPos1 && iPos2<=iPos1+nToken)
){
sqlite3_int64 iSave;
- if( !pp ){
- fts3PoslistCopy(0, &p2);
- fts3PoslistCopy(0, &p1);
- *pp1 = p1;
- *pp2 = p2;
- return 1;
- }
iSave = isSaveLeft ? iPos1 : iPos2;
fts3PutDeltaVarint(&p, &iPrev, iSave+2); iPrev -= 2;
pSave = 0;
+ assert( p );
}
if( (!isSaveLeft && iPos2<=(iPos1+nToken)) || iPos2<=iPos1 ){
if( (*p2&0xFE)==0 ) break;
@@ -109929,7 +118425,7 @@
fts3PoslistCopy(0, &p1);
*pp1 = p1;
*pp2 = p2;
- if( !pp || *pp==p ){
+ if( *pp==p ){
return 0;
}
*p++ = 0x00;
@@ -109938,7 +118434,19 @@
}
/*
-** Merge two position-lists as required by the NEAR operator.
+** Merge two position-lists as required by the NEAR operator. The argument
+** position lists correspond to the left and right phrases of an expression
+** like:
+**
+** "phrase 1" NEAR "phrase number 2"
+**
+** Position list *pp1 corresponds to the left-hand side of the NEAR
+** expression and *pp2 to the right. As usual, the indexes in the position
+** lists are the offsets of the last token in each phrase (tokens "1" and "2"
+** in the example above).
+**
+** The output position list - written to *pp - is a copy of *pp2 with those
+** entries that are not sufficiently NEAR entries in *pp1 removed.
*/
static int fts3PoslistNearMerge(
char **pp, /* Output buffer */
@@ -109951,226 +118459,325 @@
char *p1 = *pp1;
char *p2 = *pp2;
- if( !pp ){
- if( fts3PoslistPhraseMerge(0, nRight, 0, 0, pp1, pp2) ) return 1;
- *pp1 = p1;
- *pp2 = p2;
- return fts3PoslistPhraseMerge(0, nLeft, 0, 0, pp2, pp1);
+ char *pTmp1 = aTmp;
+ char *pTmp2;
+ char *aTmp2;
+ int res = 1;
+
+ fts3PoslistPhraseMerge(&pTmp1, nRight, 0, 0, pp1, pp2);
+ aTmp2 = pTmp2 = pTmp1;
+ *pp1 = p1;
+ *pp2 = p2;
+ fts3PoslistPhraseMerge(&pTmp2, nLeft, 1, 0, pp2, pp1);
+ if( pTmp1!=aTmp && pTmp2!=aTmp2 ){
+ fts3PoslistMerge(pp, &aTmp, &aTmp2);
+ }else if( pTmp1!=aTmp ){
+ fts3PoslistCopy(pp, &aTmp);
+ }else if( pTmp2!=aTmp2 ){
+ fts3PoslistCopy(pp, &aTmp2);
}else{
- char *pTmp1 = aTmp;
- char *pTmp2;
- char *aTmp2;
- int res = 1;
+ res = 0;
+ }
- fts3PoslistPhraseMerge(&pTmp1, nRight, 0, 0, pp1, pp2);
- aTmp2 = pTmp2 = pTmp1;
- *pp1 = p1;
- *pp2 = p2;
- fts3PoslistPhraseMerge(&pTmp2, nLeft, 1, 0, pp2, pp1);
- if( pTmp1!=aTmp && pTmp2!=aTmp2 ){
- fts3PoslistMerge(pp, &aTmp, &aTmp2);
- }else if( pTmp1!=aTmp ){
- fts3PoslistCopy(pp, &aTmp);
- }else if( pTmp2!=aTmp2 ){
- fts3PoslistCopy(pp, &aTmp2);
+ return res;
+}
+
+/*
+** An instance of this function is used to merge together the (potentially
+** large number of) doclists for each term that matches a prefix query.
+** See function fts3TermSelectMerge() for details.
+*/
+typedef struct TermSelect TermSelect;
+struct TermSelect {
+ char *aaOutput[16]; /* Malloc'd output buffers */
+ int anOutput[16]; /* Size each output buffer in bytes */
+};
+
+/*
+** This function is used to read a single varint from a buffer. Parameter
+** pEnd points 1 byte past the end of the buffer. When this function is
+** called, if *pp points to pEnd or greater, then the end of the buffer
+** has been reached. In this case *pp is set to 0 and the function returns.
+**
+** If *pp does not point to or past pEnd, then a single varint is read
+** from *pp. *pp is then set to point 1 byte past the end of the read varint.
+**
+** If bDescIdx is false, the value read is added to *pVal before returning.
+** If it is true, the value read is subtracted from *pVal before this
+** function returns.
+*/
+static void fts3GetDeltaVarint3(
+ char **pp, /* IN/OUT: Point to read varint from */
+ char *pEnd, /* End of buffer */
+ int bDescIdx, /* True if docids are descending */
+ sqlite3_int64 *pVal /* IN/OUT: Integer value */
+){
+ if( *pp>=pEnd ){
+ *pp = 0;
+ }else{
+ sqlite3_int64 iVal;
+ *pp += sqlite3Fts3GetVarint(*pp, &iVal);
+ if( bDescIdx ){
+ *pVal -= iVal;
}else{
- res = 0;
+ *pVal += iVal;
}
-
- return res;
}
}
/*
-** Values that may be used as the first parameter to fts3DoclistMerge().
+** This function is used to write a single varint to a buffer. The varint
+** is written to *pp. Before returning, *pp is set to point 1 byte past the
+** end of the value written.
+**
+** If *pbFirst is zero when this function is called, the value written to
+** the buffer is that of parameter iVal.
+**
+** If *pbFirst is non-zero when this function is called, then the value
+** written is either (iVal-*piPrev) (if bDescIdx is zero) or (*piPrev-iVal)
+** (if bDescIdx is non-zero).
+**
+** Before returning, this function always sets *pbFirst to 1 and *piPrev
+** to the value of parameter iVal.
*/
-#define MERGE_NOT 2 /* D + D -> D */
-#define MERGE_AND 3 /* D + D -> D */
-#define MERGE_OR 4 /* D + D -> D */
-#define MERGE_POS_OR 5 /* P + P -> P */
-#define MERGE_PHRASE 6 /* P + P -> D */
-#define MERGE_POS_PHRASE 7 /* P + P -> P */
-#define MERGE_NEAR 8 /* P + P -> D */
-#define MERGE_POS_NEAR 9 /* P + P -> P */
+static void fts3PutDeltaVarint3(
+ char **pp, /* IN/OUT: Output pointer */
+ int bDescIdx, /* True for descending docids */
+ sqlite3_int64 *piPrev, /* IN/OUT: Previous value written to list */
+ int *pbFirst, /* IN/OUT: True after first int written */
+ sqlite3_int64 iVal /* Write this value to the list */
+){
+ sqlite3_int64 iWrite;
+ if( bDescIdx==0 || *pbFirst==0 ){
+ iWrite = iVal - *piPrev;
+ }else{
+ iWrite = *piPrev - iVal;
+ }
+ assert( *pbFirst || *piPrev==0 );
+ assert( *pbFirst==0 || iWrite>0 );
+ *pp += sqlite3Fts3PutVarint(*pp, iWrite);
+ *piPrev = iVal;
+ *pbFirst = 1;
+}
+
/*
-** Merge the two doclists passed in buffer a1 (size n1 bytes) and a2
-** (size n2 bytes). The output is written to pre-allocated buffer aBuffer,
-** which is guaranteed to be large enough to hold the results. The number
-** of bytes written to aBuffer is stored in *pnBuffer before returning.
+** This macro is used by various functions that merge doclists. The two
+** arguments are 64-bit docid values. If the value of the stack variable
+** bDescDoclist is 0 when this macro is invoked, then it returns (i1-i2).
+** Otherwise, (i2-i1).
**
-** If successful, SQLITE_OK is returned. Otherwise, if a malloc error
-** occurs while allocating a temporary buffer as part of the merge operation,
-** SQLITE_NOMEM is returned.
+** Using this makes it easier to write code that can merge doclists that are
+** sorted in either ascending or descending order.
*/
-static int fts3DoclistMerge(
- int mergetype, /* One of the MERGE_XXX constants */
- int nParam1, /* Used by MERGE_NEAR and MERGE_POS_NEAR */
- int nParam2, /* Used by MERGE_NEAR and MERGE_POS_NEAR */
- char *aBuffer, /* Pre-allocated output buffer */
- int *pnBuffer, /* OUT: Bytes written to aBuffer */
- char *a1, /* Buffer containing first doclist */
- int n1, /* Size of buffer a1 */
- char *a2, /* Buffer containing second doclist */
- int n2, /* Size of buffer a2 */
- int *pnDoc /* OUT: Number of docids in output */
+#define DOCID_CMP(i1, i2) ((bDescDoclist?-1:1) * (i1-i2))
+
+/*
+** This function does an "OR" merge of two doclists (output contains all
+** positions contained in either argument doclist). If the docids in the
+** input doclists are sorted in ascending order, parameter bDescDoclist
+** should be false. If they are sorted in ascending order, it should be
+** passed a non-zero value.
+**
+** If no error occurs, *paOut is set to point at an sqlite3_malloc'd buffer
+** containing the output doclist and SQLITE_OK is returned. In this case
+** *pnOut is set to the number of bytes in the output doclist.
+**
+** If an error occurs, an SQLite error code is returned. The output values
+** are undefined in this case.
+*/
+static int fts3DoclistOrMerge(
+ int bDescDoclist, /* True if arguments are desc */
+ char *a1, int n1, /* First doclist */
+ char *a2, int n2, /* Second doclist */
+ char **paOut, int *pnOut /* OUT: Malloc'd doclist */
){
sqlite3_int64 i1 = 0;
sqlite3_int64 i2 = 0;
sqlite3_int64 iPrev = 0;
-
- char *p = aBuffer;
- char *p1 = a1;
- char *p2 = a2;
char *pEnd1 = &a1[n1];
char *pEnd2 = &a2[n2];
- int nDoc = 0;
+ char *p1 = a1;
+ char *p2 = a2;
+ char *p;
+ char *aOut;
+ int bFirstOut = 0;
- assert( mergetype==MERGE_OR || mergetype==MERGE_POS_OR
- || mergetype==MERGE_AND || mergetype==MERGE_NOT
- || mergetype==MERGE_PHRASE || mergetype==MERGE_POS_PHRASE
- || mergetype==MERGE_NEAR || mergetype==MERGE_POS_NEAR
- );
+ *paOut = 0;
+ *pnOut = 0;
- if( !aBuffer ){
- *pnBuffer = 0;
- return SQLITE_NOMEM;
- }
+ /* Allocate space for the output. Both the input and output doclists
+ ** are delta encoded. If they are in ascending order (bDescDoclist==0),
+ ** then the first docid in each list is simply encoded as a varint. For
+ ** each subsequent docid, the varint stored is the difference between the
+ ** current and previous docid (a positive number - since the list is in
+ ** ascending order).
+ **
+ ** The first docid written to the output is therefore encoded using the
+ ** same number of bytes as it is in whichever of the input lists it is
+ ** read from. And each subsequent docid read from the same input list
+ ** consumes either the same or less bytes as it did in the input (since
+ ** the difference between it and the previous value in the output must
+ ** be a positive value less than or equal to the delta value read from
+ ** the input list). The same argument applies to all but the first docid
+ ** read from the 'other' list. And to the contents of all position lists
+ ** that will be copied and merged from the input to the output.
+ **
+ ** However, if the first docid copied to the output is a negative number,
+ ** then the encoding of the first docid from the 'other' input list may
+ ** be larger in the output than it was in the input (since the delta value
+ ** may be a larger positive integer than the actual docid).
+ **
+ ** The space required to store the output is therefore the sum of the
+ ** sizes of the two inputs, plus enough space for exactly one of the input
+ ** docids to grow.
+ **
+ ** A symetric argument may be made if the doclists are in descending
+ ** order.
+ */
+ aOut = sqlite3_malloc(n1+n2+FTS3_VARINT_MAX-1);
+ if( !aOut ) return SQLITE_NOMEM;
- /* Read the first docid from each doclist */
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
+ p = aOut;
+ fts3GetDeltaVarint3(&p1, pEnd1, 0, &i1);
+ fts3GetDeltaVarint3(&p2, pEnd2, 0, &i2);
+ while( p1 || p2 ){
+ sqlite3_int64 iDiff = DOCID_CMP(i1, i2);
- switch( mergetype ){
- case MERGE_OR:
- case MERGE_POS_OR:
- while( p1 || p2 ){
- if( p2 && p1 && i1==i2 ){
- fts3PutDeltaVarint(&p, &iPrev, i1);
- if( mergetype==MERGE_POS_OR ) fts3PoslistMerge(&p, &p1, &p2);
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }else if( !p2 || (p1 && i1<i2) ){
- fts3PutDeltaVarint(&p, &iPrev, i1);
- if( mergetype==MERGE_POS_OR ) fts3PoslistCopy(&p, &p1);
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- }else{
- fts3PutDeltaVarint(&p, &iPrev, i2);
- if( mergetype==MERGE_POS_OR ) fts3PoslistCopy(&p, &p2);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }
- }
- break;
-
- case MERGE_AND:
- while( p1 && p2 ){
- if( i1==i2 ){
- fts3PutDeltaVarint(&p, &iPrev, i1);
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- nDoc++;
- }else if( i1<i2 ){
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- }else{
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }
- }
- break;
-
- case MERGE_NOT:
- while( p1 ){
- if( p2 && i1==i2 ){
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }else if( !p2 || i1<i2 ){
- fts3PutDeltaVarint(&p, &iPrev, i1);
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- }else{
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }
- }
- break;
-
- case MERGE_POS_PHRASE:
- case MERGE_PHRASE: {
- char **ppPos = (mergetype==MERGE_PHRASE ? 0 : &p);
- while( p1 && p2 ){
- if( i1==i2 ){
- char *pSave = p;
- sqlite3_int64 iPrevSave = iPrev;
- fts3PutDeltaVarint(&p, &iPrev, i1);
- if( 0==fts3PoslistPhraseMerge(ppPos, nParam1, 0, 1, &p1, &p2) ){
- p = pSave;
- iPrev = iPrevSave;
- }else{
- nDoc++;
- }
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }else if( i1<i2 ){
- fts3PoslistCopy(0, &p1);
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- }else{
- fts3PoslistCopy(0, &p2);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }
- }
- break;
- }
-
- default: assert( mergetype==MERGE_POS_NEAR || mergetype==MERGE_NEAR ); {
- char *aTmp = 0;
- char **ppPos = 0;
-
- if( mergetype==MERGE_POS_NEAR ){
- ppPos = &p;
- aTmp = sqlite3_malloc(2*(n1+n2+1));
- if( !aTmp ){
- return SQLITE_NOMEM;
- }
- }
-
- while( p1 && p2 ){
- if( i1==i2 ){
- char *pSave = p;
- sqlite3_int64 iPrevSave = iPrev;
- fts3PutDeltaVarint(&p, &iPrev, i1);
-
- if( !fts3PoslistNearMerge(ppPos, aTmp, nParam1, nParam2, &p1, &p2) ){
- iPrev = iPrevSave;
- p = pSave;
- }
-
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }else if( i1<i2 ){
- fts3PoslistCopy(0, &p1);
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- }else{
- fts3PoslistCopy(0, &p2);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }
- }
- sqlite3_free(aTmp);
- break;
+ if( p2 && p1 && iDiff==0 ){
+ fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i1);
+ fts3PoslistMerge(&p, &p1, &p2);
+ fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1);
+ fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2);
+ }else if( !p2 || (p1 && iDiff<0) ){
+ fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i1);
+ fts3PoslistCopy(&p, &p1);
+ fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1);
+ }else{
+ fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i2);
+ fts3PoslistCopy(&p, &p2);
+ fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2);
}
}
- if( pnDoc ) *pnDoc = nDoc;
- *pnBuffer = (int)(p-aBuffer);
+ *paOut = aOut;
+ *pnOut = (p-aOut);
+ assert( *pnOut<=n1+n2+FTS3_VARINT_MAX-1 );
return SQLITE_OK;
}
-/*
-** A pointer to an instance of this structure is used as the context
-** argument to sqlite3Fts3SegReaderIterate()
+/*
+** This function does a "phrase" merge of two doclists. In a phrase merge,
+** the output contains a copy of each position from the right-hand input
+** doclist for which there is a position in the left-hand input doclist
+** exactly nDist tokens before it.
+**
+** If the docids in the input doclists are sorted in ascending order,
+** parameter bDescDoclist should be false. If they are sorted in ascending
+** order, it should be passed a non-zero value.
+**
+** The right-hand input doclist is overwritten by this function.
*/
-typedef struct TermSelect TermSelect;
-struct TermSelect {
- int isReqPos;
- char *aaOutput[16]; /* Malloc'd output buffer */
- int anOutput[16]; /* Size of output in bytes */
-};
+static void fts3DoclistPhraseMerge(
+ int bDescDoclist, /* True if arguments are desc */
+ int nDist, /* Distance from left to right (1=adjacent) */
+ char *aLeft, int nLeft, /* Left doclist */
+ char *aRight, int *pnRight /* IN/OUT: Right/output doclist */
+){
+ sqlite3_int64 i1 = 0;
+ sqlite3_int64 i2 = 0;
+ sqlite3_int64 iPrev = 0;
+ char *pEnd1 = &aLeft[nLeft];
+ char *pEnd2 = &aRight[*pnRight];
+ char *p1 = aLeft;
+ char *p2 = aRight;
+ char *p;
+ int bFirstOut = 0;
+ char *aOut = aRight;
+
+ assert( nDist>0 );
+
+ p = aOut;
+ fts3GetDeltaVarint3(&p1, pEnd1, 0, &i1);
+ fts3GetDeltaVarint3(&p2, pEnd2, 0, &i2);
+
+ while( p1 && p2 ){
+ sqlite3_int64 iDiff = DOCID_CMP(i1, i2);
+ if( iDiff==0 ){
+ char *pSave = p;
+ sqlite3_int64 iPrevSave = iPrev;
+ int bFirstOutSave = bFirstOut;
+
+ fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i1);
+ if( 0==fts3PoslistPhraseMerge(&p, nDist, 0, 1, &p1, &p2) ){
+ p = pSave;
+ iPrev = iPrevSave;
+ bFirstOut = bFirstOutSave;
+ }
+ fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1);
+ fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2);
+ }else if( iDiff<0 ){
+ fts3PoslistCopy(0, &p1);
+ fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1);
+ }else{
+ fts3PoslistCopy(0, &p2);
+ fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2);
+ }
+ }
+
+ *pnRight = p - aOut;
+}
+
+/*
+** Argument pList points to a position list nList bytes in size. This
+** function checks to see if the position list contains any entries for
+** a token in position 0 (of any column). If so, it writes argument iDelta
+** to the output buffer pOut, followed by a position list consisting only
+** of the entries from pList at position 0, and terminated by an 0x00 byte.
+** The value returned is the number of bytes written to pOut (if any).
+*/
+SQLITE_PRIVATE int sqlite3Fts3FirstFilter(
+ sqlite3_int64 iDelta, /* Varint that may be written to pOut */
+ char *pList, /* Position list (no 0x00 term) */
+ int nList, /* Size of pList in bytes */
+ char *pOut /* Write output here */
+){
+ int nOut = 0;
+ int bWritten = 0; /* True once iDelta has been written */
+ char *p = pList;
+ char *pEnd = &pList[nList];
+
+ if( *p!=0x01 ){
+ if( *p==0x02 ){
+ nOut += sqlite3Fts3PutVarint(&pOut[nOut], iDelta);
+ pOut[nOut++] = 0x02;
+ bWritten = 1;
+ }
+ fts3ColumnlistCopy(0, &p);
+ }
+
+ while( p<pEnd && *p==0x01 ){
+ sqlite3_int64 iCol;
+ p++;
+ p += sqlite3Fts3GetVarint(p, &iCol);
+ if( *p==0x02 ){
+ if( bWritten==0 ){
+ nOut += sqlite3Fts3PutVarint(&pOut[nOut], iDelta);
+ bWritten = 1;
+ }
+ pOut[nOut++] = 0x01;
+ nOut += sqlite3Fts3PutVarint(&pOut[nOut], iCol);
+ pOut[nOut++] = 0x02;
+ }
+ fts3ColumnlistCopy(0, &p);
+ }
+ if( bWritten ){
+ pOut[nOut++] = 0x00;
+ }
+
+ return nOut;
+}
+
/*
** Merge all doclists in the TermSelect.aaOutput[] array into a single
@@ -110181,8 +118788,7 @@
** the responsibility of the caller to free any doclists left in the
** TermSelect.aaOutput[] array.
*/
-static int fts3TermSelectMerge(TermSelect *pTS){
- int mergetype = (pTS->isReqPos ? MERGE_POS_OR : MERGE_OR);
+static int fts3TermSelectFinishMerge(Fts3Table *p, TermSelect *pTS){
char *aOut = 0;
int nOut = 0;
int i;
@@ -110197,15 +118803,17 @@
nOut = pTS->anOutput[i];
pTS->aaOutput[i] = 0;
}else{
- int nNew = nOut + pTS->anOutput[i];
- char *aNew = sqlite3_malloc(nNew);
- if( !aNew ){
- sqlite3_free(aOut);
- return SQLITE_NOMEM;
- }
- fts3DoclistMerge(mergetype, 0, 0,
- aNew, &nNew, pTS->aaOutput[i], pTS->anOutput[i], aOut, nOut, 0
+ int nNew;
+ char *aNew;
+
+ int rc = fts3DoclistOrMerge(p->bDescIdx,
+ pTS->aaOutput[i], pTS->anOutput[i], aOut, nOut, &aNew, &nNew
);
+ if( rc!=SQLITE_OK ){
+ sqlite3_free(aOut);
+ return rc;
+ }
+
sqlite3_free(pTS->aaOutput[i]);
sqlite3_free(aOut);
pTS->aaOutput[i] = 0;
@@ -110221,29 +118829,28 @@
}
/*
-** This function is used as the sqlite3Fts3SegReaderIterate() callback when
-** querying the full-text index for a doclist associated with a term or
-** term-prefix.
+** Merge the doclist aDoclist/nDoclist into the TermSelect object passed
+** as the first argument. The merge is an "OR" merge (see function
+** fts3DoclistOrMerge() for details).
+**
+** This function is called with the doclist for each term that matches
+** a queried prefix. It merges all these doclists into one, the doclist
+** for the specified prefix. Since there can be a very large number of
+** doclists to merge, the merging is done pair-wise using the TermSelect
+** object.
+**
+** This function returns SQLITE_OK if the merge is successful, or an
+** SQLite error code (SQLITE_NOMEM) if an error occurs.
*/
-static int fts3TermSelectCb(
- Fts3Table *p, /* Virtual table object */
- void *pContext, /* Pointer to TermSelect structure */
- char *zTerm,
- int nTerm,
- char *aDoclist,
- int nDoclist
+static int fts3TermSelectMerge(
+ Fts3Table *p, /* FTS table handle */
+ TermSelect *pTS, /* TermSelect object to merge into */
+ char *aDoclist, /* Pointer to doclist */
+ int nDoclist /* Size of aDoclist in bytes */
){
- TermSelect *pTS = (TermSelect *)pContext;
-
- UNUSED_PARAMETER(p);
- UNUSED_PARAMETER(zTerm);
- UNUSED_PARAMETER(nTerm);
-
if( pTS->aaOutput[0]==0 ){
/* If this is the first term selected, copy the doclist to the output
- ** buffer using memcpy(). TODO: Add a way to transfer control of the
- ** aDoclist buffer from the caller so as to avoid the memcpy().
- */
+ ** buffer using memcpy(). */
pTS->aaOutput[0] = sqlite3_malloc(nDoclist);
pTS->anOutput[0] = nDoclist;
if( pTS->aaOutput[0] ){
@@ -110252,247 +118859,298 @@
return SQLITE_NOMEM;
}
}else{
- int mergetype = (pTS->isReqPos ? MERGE_POS_OR : MERGE_OR);
char *aMerge = aDoclist;
int nMerge = nDoclist;
int iOut;
for(iOut=0; iOut<SizeofArray(pTS->aaOutput); iOut++){
- char *aNew;
- int nNew;
if( pTS->aaOutput[iOut]==0 ){
assert( iOut>0 );
pTS->aaOutput[iOut] = aMerge;
pTS->anOutput[iOut] = nMerge;
break;
- }
+ }else{
+ char *aNew;
+ int nNew;
- nNew = nMerge + pTS->anOutput[iOut];
- aNew = sqlite3_malloc(nNew);
- if( !aNew ){
- if( aMerge!=aDoclist ){
- sqlite3_free(aMerge);
+ int rc = fts3DoclistOrMerge(p->bDescIdx, aMerge, nMerge,
+ pTS->aaOutput[iOut], pTS->anOutput[iOut], &aNew, &nNew
+ );
+ if( rc!=SQLITE_OK ){
+ if( aMerge!=aDoclist ) sqlite3_free(aMerge);
+ return rc;
}
- return SQLITE_NOMEM;
- }
- fts3DoclistMerge(mergetype, 0, 0, aNew, &nNew,
- pTS->aaOutput[iOut], pTS->anOutput[iOut], aMerge, nMerge, 0
- );
- if( iOut>0 ) sqlite3_free(aMerge);
- sqlite3_free(pTS->aaOutput[iOut]);
- pTS->aaOutput[iOut] = 0;
-
- aMerge = aNew;
- nMerge = nNew;
- if( (iOut+1)==SizeofArray(pTS->aaOutput) ){
- pTS->aaOutput[iOut] = aMerge;
- pTS->anOutput[iOut] = nMerge;
+ if( aMerge!=aDoclist ) sqlite3_free(aMerge);
+ sqlite3_free(pTS->aaOutput[iOut]);
+ pTS->aaOutput[iOut] = 0;
+
+ aMerge = aNew;
+ nMerge = nNew;
+ if( (iOut+1)==SizeofArray(pTS->aaOutput) ){
+ pTS->aaOutput[iOut] = aMerge;
+ pTS->anOutput[iOut] = nMerge;
+ }
}
}
}
return SQLITE_OK;
}
-static int fts3DeferredTermSelect(
- Fts3DeferredToken *pToken, /* Phrase token */
- int isTermPos, /* True to include positions */
- int *pnOut, /* OUT: Size of list */
- char **ppOut /* OUT: Body of list */
-){
- char *aSource;
- int nSource;
-
- aSource = sqlite3Fts3DeferredDoclist(pToken, &nSource);
- if( !aSource ){
- *pnOut = 0;
- *ppOut = 0;
- }else if( isTermPos ){
- *ppOut = sqlite3_malloc(nSource);
- if( !*ppOut ) return SQLITE_NOMEM;
- memcpy(*ppOut, aSource, nSource);
- *pnOut = nSource;
- }else{
- sqlite3_int64 docid;
- *pnOut = sqlite3Fts3GetVarint(aSource, &docid);
- *ppOut = sqlite3_malloc(*pnOut);
- if( !*ppOut ) return SQLITE_NOMEM;
- sqlite3Fts3PutVarint(*ppOut, docid);
- }
-
- return SQLITE_OK;
-}
-
/*
-** An Fts3SegReaderArray is used to store an array of Fts3SegReader objects.
-** Elements are added to the array using fts3SegReaderArrayAdd().
+** Append SegReader object pNew to the end of the pCsr->apSegment[] array.
*/
-struct Fts3SegReaderArray {
- int nSegment; /* Number of valid entries in apSegment[] */
- int nAlloc; /* Allocated size of apSegment[] */
- int nCost; /* The cost of executing SegReaderIterate() */
- Fts3SegReader *apSegment[1]; /* Array of seg-reader objects */
-};
-
-
-/*
-** Free an Fts3SegReaderArray object. Also free all seg-readers in the
-** array (using sqlite3Fts3SegReaderFree()).
-*/
-static void fts3SegReaderArrayFree(Fts3SegReaderArray *pArray){
- if( pArray ){
- int i;
- for(i=0; i<pArray->nSegment; i++){
- sqlite3Fts3SegReaderFree(pArray->apSegment[i]);
- }
- sqlite3_free(pArray);
- }
-}
-
-static int fts3SegReaderArrayAdd(
- Fts3SegReaderArray **ppArray,
+static int fts3SegReaderCursorAppend(
+ Fts3MultiSegReader *pCsr,
Fts3SegReader *pNew
){
- Fts3SegReaderArray *pArray = *ppArray;
-
- if( !pArray || pArray->nAlloc==pArray->nSegment ){
- int nNew = (pArray ? pArray->nAlloc+16 : 16);
- pArray = (Fts3SegReaderArray *)sqlite3_realloc(pArray,
- sizeof(Fts3SegReaderArray) + (nNew-1) * sizeof(Fts3SegReader*)
- );
- if( !pArray ){
+ if( (pCsr->nSegment%16)==0 ){
+ Fts3SegReader **apNew;
+ int nByte = (pCsr->nSegment + 16)*sizeof(Fts3SegReader*);
+ apNew = (Fts3SegReader **)sqlite3_realloc(pCsr->apSegment, nByte);
+ if( !apNew ){
sqlite3Fts3SegReaderFree(pNew);
return SQLITE_NOMEM;
}
- if( nNew==16 ){
- pArray->nSegment = 0;
- pArray->nCost = 0;
- }
- pArray->nAlloc = nNew;
- *ppArray = pArray;
+ pCsr->apSegment = apNew;
}
-
- pArray->apSegment[pArray->nSegment++] = pNew;
+ pCsr->apSegment[pCsr->nSegment++] = pNew;
return SQLITE_OK;
}
-static int fts3TermSegReaderArray(
- Fts3Cursor *pCsr, /* Virtual table cursor handle */
+/*
+** Add seg-reader objects to the Fts3MultiSegReader object passed as the
+** 8th argument.
+**
+** This function returns SQLITE_OK if successful, or an SQLite error code
+** otherwise.
+*/
+static int fts3SegReaderCursor(
+ Fts3Table *p, /* FTS3 table handle */
+ int iIndex, /* Index to search (from 0 to p->nIndex-1) */
+ int iLevel, /* Level of segments to scan */
const char *zTerm, /* Term to query for */
int nTerm, /* Size of zTerm in bytes */
int isPrefix, /* True for a prefix search */
- Fts3SegReaderArray **ppArray /* OUT: Allocated seg-reader array */
+ int isScan, /* True to scan from zTerm to EOF */
+ Fts3MultiSegReader *pCsr /* Cursor object to populate */
){
- Fts3Table *p = (Fts3Table *)pCsr->base.pVtab;
- int rc; /* Return code */
- Fts3SegReaderArray *pArray = 0; /* Array object to build */
- Fts3SegReader *pReader = 0; /* Seg-reader to add to pArray */
- sqlite3_stmt *pStmt = 0; /* SQL statement to scan %_segdir table */
- int iAge = 0; /* Used to assign ages to segments */
+ int rc = SQLITE_OK; /* Error code */
+ sqlite3_stmt *pStmt = 0; /* Statement to iterate through segments */
+ int rc2; /* Result of sqlite3_reset() */
- /* Allocate a seg-reader to scan the pending terms, if any. */
- rc = sqlite3Fts3SegReaderPending(p, zTerm, nTerm, isPrefix, &pReader);
- if( rc==SQLITE_OK && pReader ) {
- rc = fts3SegReaderArrayAdd(&pArray, pReader);
+ /* If iLevel is less than 0 and this is not a scan, include a seg-reader
+ ** for the pending-terms. If this is a scan, then this call must be being
+ ** made by an fts4aux module, not an FTS table. In this case calling
+ ** Fts3SegReaderPending might segfault, as the data structures used by
+ ** fts4aux are not completely populated. So it's easiest to filter these
+ ** calls out here. */
+ if( iLevel<0 && p->aIndex ){
+ Fts3SegReader *pSeg = 0;
+ rc = sqlite3Fts3SegReaderPending(p, iIndex, zTerm, nTerm, isPrefix, &pSeg);
+ if( rc==SQLITE_OK && pSeg ){
+ rc = fts3SegReaderCursorAppend(pCsr, pSeg);
+ }
}
- /* Loop through the entire %_segdir table. For each segment, create a
- ** Fts3SegReader to iterate through the subset of the segment leaves
- ** that may contain a term that matches zTerm/nTerm. For non-prefix
- ** searches, this is always a single leaf. For prefix searches, this
- ** may be a contiguous block of leaves.
- */
- if( rc==SQLITE_OK ){
- rc = sqlite3Fts3AllSegdirs(p, &pStmt);
- }
- while( rc==SQLITE_OK && SQLITE_ROW==(rc = sqlite3_step(pStmt)) ){
- Fts3SegReader *pNew = 0;
- int nRoot = sqlite3_column_bytes(pStmt, 4);
- char const *zRoot = sqlite3_column_blob(pStmt, 4);
- if( sqlite3_column_int64(pStmt, 1)==0 ){
- /* The entire segment is stored on the root node (which must be a
- ** leaf). Do not bother inspecting any data in this case, just
- ** create a Fts3SegReader to scan the single leaf.
- */
- rc = sqlite3Fts3SegReaderNew(iAge, 0, 0, 0, zRoot, nRoot, &pNew);
- }else{
- sqlite3_int64 i1; /* First leaf that may contain zTerm */
- sqlite3_int64 i2; /* Final leaf that may contain zTerm */
- rc = fts3SelectLeaf(p, zTerm, nTerm, zRoot, nRoot, &i1, (isPrefix?&i2:0));
- if( isPrefix==0 ) i2 = i1;
- if( rc==SQLITE_OK ){
- rc = sqlite3Fts3SegReaderNew(iAge, i1, i2, 0, 0, 0, &pNew);
+ if( iLevel!=FTS3_SEGCURSOR_PENDING ){
+ if( rc==SQLITE_OK ){
+ rc = sqlite3Fts3AllSegdirs(p, iIndex, iLevel, &pStmt);
+ }
+
+ while( rc==SQLITE_OK && SQLITE_ROW==(rc = sqlite3_step(pStmt)) ){
+ Fts3SegReader *pSeg = 0;
+
+ /* Read the values returned by the SELECT into local variables. */
+ sqlite3_int64 iStartBlock = sqlite3_column_int64(pStmt, 1);
+ sqlite3_int64 iLeavesEndBlock = sqlite3_column_int64(pStmt, 2);
+ sqlite3_int64 iEndBlock = sqlite3_column_int64(pStmt, 3);
+ int nRoot = sqlite3_column_bytes(pStmt, 4);
+ char const *zRoot = sqlite3_column_blob(pStmt, 4);
+
+ /* If zTerm is not NULL, and this segment is not stored entirely on its
+ ** root node, the range of leaves scanned can be reduced. Do this. */
+ if( iStartBlock && zTerm ){
+ sqlite3_int64 *pi = (isPrefix ? &iLeavesEndBlock : 0);
+ rc = fts3SelectLeaf(p, zTerm, nTerm, zRoot, nRoot, &iStartBlock, pi);
+ if( rc!=SQLITE_OK ) goto finished;
+ if( isPrefix==0 && isScan==0 ) iLeavesEndBlock = iStartBlock;
}
+
+ rc = sqlite3Fts3SegReaderNew(pCsr->nSegment+1,
+ iStartBlock, iLeavesEndBlock, iEndBlock, zRoot, nRoot, &pSeg
+ );
+ if( rc!=SQLITE_OK ) goto finished;
+ rc = fts3SegReaderCursorAppend(pCsr, pSeg);
}
- assert( (pNew==0)==(rc!=SQLITE_OK) );
-
- /* If a new Fts3SegReader was allocated, add it to the array. */
- if( rc==SQLITE_OK ){
- rc = fts3SegReaderArrayAdd(&pArray, pNew);
- }
- if( rc==SQLITE_OK ){
- rc = sqlite3Fts3SegReaderCost(pCsr, pNew, &pArray->nCost);
- }
- iAge++;
}
- if( rc==SQLITE_DONE ){
- rc = sqlite3_reset(pStmt);
- }else{
- sqlite3_reset(pStmt);
- }
- if( rc!=SQLITE_OK ){
- fts3SegReaderArrayFree(pArray);
- pArray = 0;
- }
- *ppArray = pArray;
+ finished:
+ rc2 = sqlite3_reset(pStmt);
+ if( rc==SQLITE_DONE ) rc = rc2;
+
return rc;
}
/*
-** This function retreives the doclist for the specified term (or term
-** prefix) from the database.
+** Set up a cursor object for iterating through a full-text index or a
+** single level therein.
+*/
+SQLITE_PRIVATE int sqlite3Fts3SegReaderCursor(
+ Fts3Table *p, /* FTS3 table handle */
+ int iIndex, /* Index to search (from 0 to p->nIndex-1) */
+ int iLevel, /* Level of segments to scan */
+ const char *zTerm, /* Term to query for */
+ int nTerm, /* Size of zTerm in bytes */
+ int isPrefix, /* True for a prefix search */
+ int isScan, /* True to scan from zTerm to EOF */
+ Fts3MultiSegReader *pCsr /* Cursor object to populate */
+){
+ assert( iIndex>=0 && iIndex<p->nIndex );
+ assert( iLevel==FTS3_SEGCURSOR_ALL
+ || iLevel==FTS3_SEGCURSOR_PENDING
+ || iLevel>=0
+ );
+ assert( iLevel<FTS3_SEGDIR_MAXLEVEL );
+ assert( FTS3_SEGCURSOR_ALL<0 && FTS3_SEGCURSOR_PENDING<0 );
+ assert( isPrefix==0 || isScan==0 );
+
+ /* "isScan" is only set to true by the ft4aux module, an ordinary
+ ** full-text tables. */
+ assert( isScan==0 || p->aIndex==0 );
+
+ memset(pCsr, 0, sizeof(Fts3MultiSegReader));
+
+ return fts3SegReaderCursor(
+ p, iIndex, iLevel, zTerm, nTerm, isPrefix, isScan, pCsr
+ );
+}
+
+/*
+** In addition to its current configuration, have the Fts3MultiSegReader
+** passed as the 4th argument also scan the doclist for term zTerm/nTerm.
**
-** The returned doclist may be in one of two formats, depending on the
-** value of parameter isReqPos. If isReqPos is zero, then the doclist is
-** a sorted list of delta-compressed docids (a bare doclist). If isReqPos
-** is non-zero, then the returned list is in the same format as is stored
-** in the database without the found length specifier at the start of on-disk
-** doclists.
+** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code.
+*/
+static int fts3SegReaderCursorAddZero(
+ Fts3Table *p, /* FTS virtual table handle */
+ const char *zTerm, /* Term to scan doclist of */
+ int nTerm, /* Number of bytes in zTerm */
+ Fts3MultiSegReader *pCsr /* Fts3MultiSegReader to modify */
+){
+ return fts3SegReaderCursor(p, 0, FTS3_SEGCURSOR_ALL, zTerm, nTerm, 0, 0,pCsr);
+}
+
+/*
+** Open an Fts3MultiSegReader to scan the doclist for term zTerm/nTerm. Or,
+** if isPrefix is true, to scan the doclist for all terms for which
+** zTerm/nTerm is a prefix. If successful, return SQLITE_OK and write
+** a pointer to the new Fts3MultiSegReader to *ppSegcsr. Otherwise, return
+** an SQLite error code.
+**
+** It is the responsibility of the caller to free this object by eventually
+** passing it to fts3SegReaderCursorFree()
+**
+** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code.
+** Output parameter *ppSegcsr is set to 0 if an error occurs.
+*/
+static int fts3TermSegReaderCursor(
+ Fts3Cursor *pCsr, /* Virtual table cursor handle */
+ const char *zTerm, /* Term to query for */
+ int nTerm, /* Size of zTerm in bytes */
+ int isPrefix, /* True for a prefix search */
+ Fts3MultiSegReader **ppSegcsr /* OUT: Allocated seg-reader cursor */
+){
+ Fts3MultiSegReader *pSegcsr; /* Object to allocate and return */
+ int rc = SQLITE_NOMEM; /* Return code */
+
+ pSegcsr = sqlite3_malloc(sizeof(Fts3MultiSegReader));
+ if( pSegcsr ){
+ int i;
+ int bFound = 0; /* True once an index has been found */
+ Fts3Table *p = (Fts3Table *)pCsr->base.pVtab;
+
+ if( isPrefix ){
+ for(i=1; bFound==0 && i<p->nIndex; i++){
+ if( p->aIndex[i].nPrefix==nTerm ){
+ bFound = 1;
+ rc = sqlite3Fts3SegReaderCursor(
+ p, i, FTS3_SEGCURSOR_ALL, zTerm, nTerm, 0, 0, pSegcsr);
+ pSegcsr->bLookup = 1;
+ }
+ }
+
+ for(i=1; bFound==0 && i<p->nIndex; i++){
+ if( p->aIndex[i].nPrefix==nTerm+1 ){
+ bFound = 1;
+ rc = sqlite3Fts3SegReaderCursor(
+ p, i, FTS3_SEGCURSOR_ALL, zTerm, nTerm, 1, 0, pSegcsr
+ );
+ if( rc==SQLITE_OK ){
+ rc = fts3SegReaderCursorAddZero(p, zTerm, nTerm, pSegcsr);
+ }
+ }
+ }
+ }
+
+ if( bFound==0 ){
+ rc = sqlite3Fts3SegReaderCursor(
+ p, 0, FTS3_SEGCURSOR_ALL, zTerm, nTerm, isPrefix, 0, pSegcsr
+ );
+ pSegcsr->bLookup = !isPrefix;
+ }
+ }
+
+ *ppSegcsr = pSegcsr;
+ return rc;
+}
+
+/*
+** Free an Fts3MultiSegReader allocated by fts3TermSegReaderCursor().
+*/
+static void fts3SegReaderCursorFree(Fts3MultiSegReader *pSegcsr){
+ sqlite3Fts3SegReaderFinish(pSegcsr);
+ sqlite3_free(pSegcsr);
+}
+
+/*
+** This function retreives the doclist for the specified term (or term
+** prefix) from the database.
*/
static int fts3TermSelect(
Fts3Table *p, /* Virtual table handle */
Fts3PhraseToken *pTok, /* Token to query for */
int iColumn, /* Column to query (or -ve for all columns) */
- int isReqPos, /* True to include position lists in output */
int *pnOut, /* OUT: Size of buffer at *ppOut */
char **ppOut /* OUT: Malloced result buffer */
){
int rc; /* Return code */
- Fts3SegReaderArray *pArray; /* Seg-reader array for this term */
- TermSelect tsc; /* Context object for fts3TermSelectCb() */
- Fts3SegFilter filter; /* Segment term filter configuration */
+ Fts3MultiSegReader *pSegcsr; /* Seg-reader cursor for this term */
+ TermSelect tsc; /* Object for pair-wise doclist merging */
+ Fts3SegFilter filter; /* Segment term filter configuration */
- pArray = pTok->pArray;
+ pSegcsr = pTok->pSegcsr;
memset(&tsc, 0, sizeof(TermSelect));
- tsc.isReqPos = isReqPos;
- filter.flags = FTS3_SEGMENT_IGNORE_EMPTY
+ filter.flags = FTS3_SEGMENT_IGNORE_EMPTY | FTS3_SEGMENT_REQUIRE_POS
| (pTok->isPrefix ? FTS3_SEGMENT_PREFIX : 0)
- | (isReqPos ? FTS3_SEGMENT_REQUIRE_POS : 0)
+ | (pTok->bFirst ? FTS3_SEGMENT_FIRST : 0)
| (iColumn<p->nColumn ? FTS3_SEGMENT_COLUMN_FILTER : 0);
filter.iCol = iColumn;
filter.zTerm = pTok->z;
filter.nTerm = pTok->n;
- rc = sqlite3Fts3SegReaderIterate(p, pArray->apSegment, pArray->nSegment,
- &filter, fts3TermSelectCb, (void *)&tsc
- );
- if( rc==SQLITE_OK ){
- rc = fts3TermSelectMerge(&tsc);
+ rc = sqlite3Fts3SegReaderStart(p, pSegcsr, &filter);
+ while( SQLITE_OK==rc
+ && SQLITE_ROW==(rc = sqlite3Fts3SegReaderStep(p, pSegcsr))
+ ){
+ rc = fts3TermSelectMerge(p, &tsc, pSegcsr->aDoclist, pSegcsr->nDoclist);
}
if( rc==SQLITE_OK ){
+ rc = fts3TermSelectFinishMerge(p, &tsc);
+ }
+ if( rc==SQLITE_OK ){
*ppOut = tsc.aaOutput[0];
*pnOut = tsc.anOutput[0];
}else{
@@ -110502,8 +119160,8 @@
}
}
- fts3SegReaderArrayFree(pArray);
- pTok->pArray = 0;
+ fts3SegReaderCursorFree(pSegcsr);
+ pTok->pSegcsr = 0;
return rc;
}
@@ -110516,24 +119174,15 @@
** that the doclist is simply a list of docids stored as delta encoded
** varints.
*/
-static int fts3DoclistCountDocids(int isPoslist, char *aList, int nList){
+static int fts3DoclistCountDocids(char *aList, int nList){
int nDoc = 0; /* Return value */
if( aList ){
char *aEnd = &aList[nList]; /* Pointer to one byte after EOF */
char *p = aList; /* Cursor */
- if( !isPoslist ){
- /* The number of docids in the list is the same as the number of
- ** varints. In FTS3 a varint consists of a single byte with the 0x80
- ** bit cleared and zero or more bytes with the 0x80 bit set. So to
- ** count the varints in the buffer, just count the number of bytes
- ** with the 0x80 bit clear. */
- while( p<aEnd ) nDoc += (((*p++)&0x80)==0);
- }else{
- while( p<aEnd ){
- nDoc++;
- while( (*p++)&0x80 ); /* Skip docid varint */
- fts3PoslistCopy(0, &p); /* Skip over position list */
- }
+ while( p<aEnd ){
+ nDoc++;
+ while( (*p++)&0x80 ); /* Skip docid varint */
+ fts3PoslistCopy(0, &p); /* Skip over position list */
}
}
@@ -110541,662 +119190,6 @@
}
/*
-** Call sqlite3Fts3DeferToken() for each token in the expression pExpr.
-*/
-static int fts3DeferExpression(Fts3Cursor *pCsr, Fts3Expr *pExpr){
- int rc = SQLITE_OK;
- if( pExpr ){
- rc = fts3DeferExpression(pCsr, pExpr->pLeft);
- if( rc==SQLITE_OK ){
- rc = fts3DeferExpression(pCsr, pExpr->pRight);
- }
- if( pExpr->eType==FTSQUERY_PHRASE ){
- int iCol = pExpr->pPhrase->iColumn;
- int i;
- for(i=0; rc==SQLITE_OK && i<pExpr->pPhrase->nToken; i++){
- Fts3PhraseToken *pToken = &pExpr->pPhrase->aToken[i];
- if( pToken->pDeferred==0 ){
- rc = sqlite3Fts3DeferToken(pCsr, pToken, iCol);
- }
- }
- }
- }
- return rc;
-}
-
-/*
-** This function removes the position information from a doclist. When
-** called, buffer aList (size *pnList bytes) contains a doclist that includes
-** position information. This function removes the position information so
-** that aList contains only docids, and adjusts *pnList to reflect the new
-** (possibly reduced) size of the doclist.
-*/
-static void fts3DoclistStripPositions(
- char *aList, /* IN/OUT: Buffer containing doclist */
- int *pnList /* IN/OUT: Size of doclist in bytes */
-){
- if( aList ){
- char *aEnd = &aList[*pnList]; /* Pointer to one byte after EOF */
- char *p = aList; /* Input cursor */
- char *pOut = aList; /* Output cursor */
-
- while( p<aEnd ){
- sqlite3_int64 delta;
- p += sqlite3Fts3GetVarint(p, &delta);
- fts3PoslistCopy(0, &p);
- pOut += sqlite3Fts3PutVarint(pOut, delta);
- }
-
- *pnList = (int)(pOut - aList);
- }
-}
-
-/*
-** Return a DocList corresponding to the phrase *pPhrase.
-**
-** If this function returns SQLITE_OK, but *pnOut is set to a negative value,
-** then no tokens in the phrase were looked up in the full-text index. This
-** is only possible when this function is called from within xFilter(). The
-** caller should assume that all documents match the phrase. The actual
-** filtering will take place in xNext().
-*/
-static int fts3PhraseSelect(
- Fts3Cursor *pCsr, /* Virtual table cursor handle */
- Fts3Phrase *pPhrase, /* Phrase to return a doclist for */
- int isReqPos, /* True if output should contain positions */
- char **paOut, /* OUT: Pointer to malloc'd result buffer */
- int *pnOut /* OUT: Size of buffer at *paOut */
-){
- char *pOut = 0;
- int nOut = 0;
- int rc = SQLITE_OK;
- int ii;
- int iCol = pPhrase->iColumn;
- int isTermPos = (pPhrase->nToken>1 || isReqPos);
- Fts3Table *p = (Fts3Table *)pCsr->base.pVtab;
- int isFirst = 1;
-
- int iPrevTok = 0;
- int nDoc = 0;
-
- /* If this is an xFilter() evaluation, create a segment-reader for each
- ** phrase token. Or, if this is an xNext() or snippet/offsets/matchinfo
- ** evaluation, only create segment-readers if there are no Fts3DeferredToken
- ** objects attached to the phrase-tokens.
- */
- for(ii=0; ii<pPhrase->nToken; ii++){
- Fts3PhraseToken *pTok = &pPhrase->aToken[ii];
- if( pTok->pArray==0 ){
- if( (pCsr->eEvalmode==FTS3_EVAL_FILTER)
- || (pCsr->eEvalmode==FTS3_EVAL_NEXT && pCsr->pDeferred==0)
- || (pCsr->eEvalmode==FTS3_EVAL_MATCHINFO && pTok->bFulltext)
- ){
- rc = fts3TermSegReaderArray(
- pCsr, pTok->z, pTok->n, pTok->isPrefix, &pTok->pArray
- );
- if( rc!=SQLITE_OK ) return rc;
- }
- }
- }
-
- for(ii=0; ii<pPhrase->nToken; ii++){
- Fts3PhraseToken *pTok; /* Token to find doclist for */
- int iTok = 0; /* The token being queried this iteration */
- char *pList = 0; /* Pointer to token doclist */
- int nList = 0; /* Size of buffer at pList */
-
- /* Select a token to process. If this is an xFilter() call, then tokens
- ** are processed in order from least to most costly. Otherwise, tokens
- ** are processed in the order in which they occur in the phrase.
- */
- if( pCsr->eEvalmode==FTS3_EVAL_MATCHINFO ){
- assert( isReqPos );
- iTok = ii;
- pTok = &pPhrase->aToken[iTok];
- if( pTok->bFulltext==0 ) continue;
- }else if( pCsr->eEvalmode==FTS3_EVAL_NEXT || isReqPos ){
- iTok = ii;
- pTok = &pPhrase->aToken[iTok];
- }else{
- int nMinCost = 0x7FFFFFFF;
- int jj;
-
- /* Find the remaining token with the lowest cost. */
- for(jj=0; jj<pPhrase->nToken; jj++){
- Fts3SegReaderArray *pArray = pPhrase->aToken[jj].pArray;
- if( pArray && pArray->nCost<nMinCost ){
- iTok = jj;
- nMinCost = pArray->nCost;
- }
- }
- pTok = &pPhrase->aToken[iTok];
-
- /* This branch is taken if it is determined that loading the doclist
- ** for the next token would require more IO than loading all documents
- ** currently identified by doclist pOut/nOut. No further doclists will
- ** be loaded from the full-text index for this phrase.
- */
- if( nMinCost>nDoc && ii>0 ){
- rc = fts3DeferExpression(pCsr, pCsr->pExpr);
- break;
- }
- }
-
- if( pCsr->eEvalmode==FTS3_EVAL_NEXT && pTok->pDeferred ){
- rc = fts3DeferredTermSelect(pTok->pDeferred, isTermPos, &nList, &pList);
- }else{
- if( pTok->pArray ){
- rc = fts3TermSelect(p, pTok, iCol, isTermPos, &nList, &pList);
- }
- pTok->bFulltext = 1;
- }
- assert( rc!=SQLITE_OK || pCsr->eEvalmode || pTok->pArray==0 );
- if( rc!=SQLITE_OK ) break;
-
- if( isFirst ){
- pOut = pList;
- nOut = nList;
- if( pCsr->eEvalmode==FTS3_EVAL_FILTER && pPhrase->nToken>1 ){
- nDoc = fts3DoclistCountDocids(1, pOut, nOut);
- }
- isFirst = 0;
- iPrevTok = iTok;
- }else{
- /* Merge the new term list and the current output. */
- char *aLeft, *aRight;
- int nLeft, nRight;
- int nDist;
- int mt;
-
- /* If this is the final token of the phrase, and positions were not
- ** requested by the caller, use MERGE_PHRASE instead of POS_PHRASE.
- ** This drops the position information from the output list.
- */
- mt = MERGE_POS_PHRASE;
- if( ii==pPhrase->nToken-1 && !isReqPos ) mt = MERGE_PHRASE;
-
- assert( iPrevTok!=iTok );
- if( iPrevTok<iTok ){
- aLeft = pOut;
- nLeft = nOut;
- aRight = pList;
- nRight = nList;
- nDist = iTok-iPrevTok;
- iPrevTok = iTok;
- }else{
- aRight = pOut;
- nRight = nOut;
- aLeft = pList;
- nLeft = nList;
- nDist = iPrevTok-iTok;
- }
- pOut = aRight;
- fts3DoclistMerge(
- mt, nDist, 0, pOut, &nOut, aLeft, nLeft, aRight, nRight, &nDoc
- );
- sqlite3_free(aLeft);
- }
- assert( nOut==0 || pOut!=0 );
- }
-
- if( rc==SQLITE_OK ){
- if( ii!=pPhrase->nToken ){
- assert( pCsr->eEvalmode==FTS3_EVAL_FILTER && isReqPos==0 );
- fts3DoclistStripPositions(pOut, &nOut);
- }
- *paOut = pOut;
- *pnOut = nOut;
- }else{
- sqlite3_free(pOut);
- }
- return rc;
-}
-
-/*
-** This function merges two doclists according to the requirements of a
-** NEAR operator.
-**
-** Both input doclists must include position information. The output doclist
-** includes position information if the first argument to this function
-** is MERGE_POS_NEAR, or does not if it is MERGE_NEAR.
-*/
-static int fts3NearMerge(
- int mergetype, /* MERGE_POS_NEAR or MERGE_NEAR */
- int nNear, /* Parameter to NEAR operator */
- int nTokenLeft, /* Number of tokens in LHS phrase arg */
- char *aLeft, /* Doclist for LHS (incl. positions) */
- int nLeft, /* Size of LHS doclist in bytes */
- int nTokenRight, /* As nTokenLeft */
- char *aRight, /* As aLeft */
- int nRight, /* As nRight */
- char **paOut, /* OUT: Results of merge (malloced) */
- int *pnOut /* OUT: Sized of output buffer */
-){
- char *aOut; /* Buffer to write output doclist to */
- int rc; /* Return code */
-
- assert( mergetype==MERGE_POS_NEAR || MERGE_NEAR );
-
- aOut = sqlite3_malloc(nLeft+nRight+1);
- if( aOut==0 ){
- rc = SQLITE_NOMEM;
- }else{
- rc = fts3DoclistMerge(mergetype, nNear+nTokenRight, nNear+nTokenLeft,
- aOut, pnOut, aLeft, nLeft, aRight, nRight, 0
- );
- if( rc!=SQLITE_OK ){
- sqlite3_free(aOut);
- aOut = 0;
- }
- }
-
- *paOut = aOut;
- return rc;
-}
-
-/*
-** This function is used as part of the processing for the snippet() and
-** offsets() functions.
-**
-** Both pLeft and pRight are expression nodes of type FTSQUERY_PHRASE. Both
-** have their respective doclists (including position information) loaded
-** in Fts3Expr.aDoclist/nDoclist. This function removes all entries from
-** each doclist that are not within nNear tokens of a corresponding entry
-** in the other doclist.
-*/
-SQLITE_PRIVATE int sqlite3Fts3ExprNearTrim(Fts3Expr *pLeft, Fts3Expr *pRight, int nNear){
- int rc; /* Return code */
-
- assert( pLeft->eType==FTSQUERY_PHRASE );
- assert( pRight->eType==FTSQUERY_PHRASE );
- assert( pLeft->isLoaded && pRight->isLoaded );
-
- if( pLeft->aDoclist==0 || pRight->aDoclist==0 ){
- sqlite3_free(pLeft->aDoclist);
- sqlite3_free(pRight->aDoclist);
- pRight->aDoclist = 0;
- pLeft->aDoclist = 0;
- rc = SQLITE_OK;
- }else{
- char *aOut; /* Buffer in which to assemble new doclist */
- int nOut; /* Size of buffer aOut in bytes */
-
- rc = fts3NearMerge(MERGE_POS_NEAR, nNear,
- pLeft->pPhrase->nToken, pLeft->aDoclist, pLeft->nDoclist,
- pRight->pPhrase->nToken, pRight->aDoclist, pRight->nDoclist,
- &aOut, &nOut
- );
- if( rc!=SQLITE_OK ) return rc;
- sqlite3_free(pRight->aDoclist);
- pRight->aDoclist = aOut;
- pRight->nDoclist = nOut;
-
- rc = fts3NearMerge(MERGE_POS_NEAR, nNear,
- pRight->pPhrase->nToken, pRight->aDoclist, pRight->nDoclist,
- pLeft->pPhrase->nToken, pLeft->aDoclist, pLeft->nDoclist,
- &aOut, &nOut
- );
- sqlite3_free(pLeft->aDoclist);
- pLeft->aDoclist = aOut;
- pLeft->nDoclist = nOut;
- }
- return rc;
-}
-
-
-/*
-** Allocate an Fts3SegReaderArray for each token in the expression pExpr.
-** The allocated objects are stored in the Fts3PhraseToken.pArray member
-** variables of each token structure.
-*/
-static int fts3ExprAllocateSegReaders(
- Fts3Cursor *pCsr, /* FTS3 table */
- Fts3Expr *pExpr, /* Expression to create seg-readers for */
- int *pnExpr /* OUT: Number of AND'd expressions */
-){
- int rc = SQLITE_OK; /* Return code */
-
- assert( pCsr->eEvalmode==FTS3_EVAL_FILTER );
- if( pnExpr && pExpr->eType!=FTSQUERY_AND ){
- (*pnExpr)++;
- pnExpr = 0;
- }
-
- if( pExpr->eType==FTSQUERY_PHRASE ){
- Fts3Phrase *pPhrase = pExpr->pPhrase;
- int ii;
-
- for(ii=0; rc==SQLITE_OK && ii<pPhrase->nToken; ii++){
- Fts3PhraseToken *pTok = &pPhrase->aToken[ii];
- if( pTok->pArray==0 ){
- rc = fts3TermSegReaderArray(
- pCsr, pTok->z, pTok->n, pTok->isPrefix, &pTok->pArray
- );
- }
- }
- }else{
- rc = fts3ExprAllocateSegReaders(pCsr, pExpr->pLeft, pnExpr);
- if( rc==SQLITE_OK ){
- rc = fts3ExprAllocateSegReaders(pCsr, pExpr->pRight, pnExpr);
- }
- }
- return rc;
-}
-
-/*
-** Free the Fts3SegReaderArray objects associated with each token in the
-** expression pExpr. In other words, this function frees the resources
-** allocated by fts3ExprAllocateSegReaders().
-*/
-static void fts3ExprFreeSegReaders(Fts3Expr *pExpr){
- if( pExpr ){
- Fts3Phrase *pPhrase = pExpr->pPhrase;
- if( pPhrase ){
- int kk;
- for(kk=0; kk<pPhrase->nToken; kk++){
- fts3SegReaderArrayFree(pPhrase->aToken[kk].pArray);
- pPhrase->aToken[kk].pArray = 0;
- }
- }
- fts3ExprFreeSegReaders(pExpr->pLeft);
- fts3ExprFreeSegReaders(pExpr->pRight);
- }
-}
-
-/*
-** Return the sum of the costs of all tokens in the expression pExpr. This
-** function must be called after Fts3SegReaderArrays have been allocated
-** for all tokens using fts3ExprAllocateSegReaders().
-*/
-static int fts3ExprCost(Fts3Expr *pExpr){
- int nCost; /* Return value */
- if( pExpr->eType==FTSQUERY_PHRASE ){
- Fts3Phrase *pPhrase = pExpr->pPhrase;
- int ii;
- nCost = 0;
- for(ii=0; ii<pPhrase->nToken; ii++){
- Fts3SegReaderArray *pArray = pPhrase->aToken[ii].pArray;
- if( pArray ){
- nCost += pPhrase->aToken[ii].pArray->nCost;
- }
- }
- }else{
- nCost = fts3ExprCost(pExpr->pLeft) + fts3ExprCost(pExpr->pRight);
- }
- return nCost;
-}
-
-/*
-** The following is a helper function (and type) for fts3EvalExpr(). It
-** must be called after Fts3SegReaders have been allocated for every token
-** in the expression. See the context it is called from in fts3EvalExpr()
-** for further explanation.
-*/
-typedef struct ExprAndCost ExprAndCost;
-struct ExprAndCost {
- Fts3Expr *pExpr;
- int nCost;
-};
-static void fts3ExprAssignCosts(
- Fts3Expr *pExpr, /* Expression to create seg-readers for */
- ExprAndCost **ppExprCost /* OUT: Write to *ppExprCost */
-){
- if( pExpr->eType==FTSQUERY_AND ){
- fts3ExprAssignCosts(pExpr->pLeft, ppExprCost);
- fts3ExprAssignCosts(pExpr->pRight, ppExprCost);
- }else{
- (*ppExprCost)->pExpr = pExpr;
- (*ppExprCost)->nCost = fts3ExprCost(pExpr);
- (*ppExprCost)++;
- }
-}
-
-/*
-** Evaluate the full-text expression pExpr against FTS3 table pTab. Store
-** the resulting doclist in *paOut and *pnOut. This routine mallocs for
-** the space needed to store the output. The caller is responsible for
-** freeing the space when it has finished.
-**
-** This function is called in two distinct contexts:
-**
-** * From within the virtual table xFilter() method. In this case, the
-** output doclist contains entries for all rows in the table, based on
-** data read from the full-text index.
-**
-** In this case, if the query expression contains one or more tokens that
-** are very common, then the returned doclist may contain a superset of
-** the documents that actually match the expression.
-**
-** * From within the virtual table xNext() method. This call is only made
-** if the call from within xFilter() found that there were very common
-** tokens in the query expression and did return a superset of the
-** matching documents. In this case the returned doclist contains only
-** entries that correspond to the current row of the table. Instead of
-** reading the data for each token from the full-text index, the data is
-** already available in-memory in the Fts3PhraseToken.pDeferred structures.
-** See fts3EvalDeferred() for how it gets there.
-**
-** In the first case above, Fts3Cursor.doDeferred==0. In the second (if it is
-** required) Fts3Cursor.doDeferred==1.
-**
-** If the SQLite invokes the snippet(), offsets() or matchinfo() function
-** as part of a SELECT on an FTS3 table, this function is called on each
-** individual phrase expression in the query. If there were very common tokens
-** found in the xFilter() call, then this function is called once for phrase
-** for each row visited, and the returned doclist contains entries for the
-** current row only. Otherwise, if there were no very common tokens, then this
-** function is called once only for each phrase in the query and the returned
-** doclist contains entries for all rows of the table.
-**
-** Fts3Cursor.doDeferred==1 when this function is called on phrases as a
-** result of a snippet(), offsets() or matchinfo() invocation.
-*/
-static int fts3EvalExpr(
- Fts3Cursor *p, /* Virtual table cursor handle */
- Fts3Expr *pExpr, /* Parsed fts3 expression */
- char **paOut, /* OUT: Pointer to malloc'd result buffer */
- int *pnOut, /* OUT: Size of buffer at *paOut */
- int isReqPos /* Require positions in output buffer */
-){
- int rc = SQLITE_OK; /* Return code */
-
- /* Zero the output parameters. */
- *paOut = 0;
- *pnOut = 0;
-
- if( pExpr ){
- assert( pExpr->eType==FTSQUERY_NEAR || pExpr->eType==FTSQUERY_OR
- || pExpr->eType==FTSQUERY_AND || pExpr->eType==FTSQUERY_NOT
- || pExpr->eType==FTSQUERY_PHRASE
- );
- assert( pExpr->eType==FTSQUERY_PHRASE || isReqPos==0 );
-
- if( pExpr->eType==FTSQUERY_PHRASE ){
- rc = fts3PhraseSelect(p, pExpr->pPhrase,
- isReqPos || (pExpr->pParent && pExpr->pParent->eType==FTSQUERY_NEAR),
- paOut, pnOut
- );
- fts3ExprFreeSegReaders(pExpr);
- }else if( p->eEvalmode==FTS3_EVAL_FILTER && pExpr->eType==FTSQUERY_AND ){
- ExprAndCost *aExpr = 0; /* Array of AND'd expressions and costs */
- int nExpr = 0; /* Size of aExpr[] */
- char *aRet = 0; /* Doclist to return to caller */
- int nRet = 0; /* Length of aRet[] in bytes */
- int nDoc = 0x7FFFFFFF;
-
- assert( !isReqPos );
-
- rc = fts3ExprAllocateSegReaders(p, pExpr, &nExpr);
- if( rc==SQLITE_OK ){
- assert( nExpr>1 );
- aExpr = sqlite3_malloc(sizeof(ExprAndCost) * nExpr);
- if( !aExpr ) rc = SQLITE_NOMEM;
- }
- if( rc==SQLITE_OK ){
- int ii; /* Used to iterate through expressions */
-
- fts3ExprAssignCosts(pExpr, &aExpr);
- aExpr -= nExpr;
- for(ii=0; ii<nExpr; ii++){
- char *aNew;
- int nNew;
- int jj;
- ExprAndCost *pBest = 0;
-
- for(jj=0; jj<nExpr; jj++){
- ExprAndCost *pCand = &aExpr[jj];
- if( pCand->pExpr && (pBest==0 || pCand->nCost<pBest->nCost) ){
- pBest = pCand;
- }
- }
-
- if( pBest->nCost>nDoc ){
- rc = fts3DeferExpression(p, p->pExpr);
- break;
- }else{
- rc = fts3EvalExpr(p, pBest->pExpr, &aNew, &nNew, 0);
- if( rc!=SQLITE_OK ) break;
- pBest->pExpr = 0;
- if( ii==0 ){
- aRet = aNew;
- nRet = nNew;
- nDoc = fts3DoclistCountDocids(0, aRet, nRet);
- }else{
- fts3DoclistMerge(
- MERGE_AND, 0, 0, aRet, &nRet, aRet, nRet, aNew, nNew, &nDoc
- );
- sqlite3_free(aNew);
- }
- }
- }
- }
-
- if( rc==SQLITE_OK ){
- *paOut = aRet;
- *pnOut = nRet;
- }else{
- assert( *paOut==0 );
- sqlite3_free(aRet);
- }
- sqlite3_free(aExpr);
- fts3ExprFreeSegReaders(pExpr);
-
- }else{
- char *aLeft;
- char *aRight;
- int nLeft;
- int nRight;
-
- assert( pExpr->eType==FTSQUERY_NEAR
- || pExpr->eType==FTSQUERY_OR
- || pExpr->eType==FTSQUERY_NOT
- || (pExpr->eType==FTSQUERY_AND && p->eEvalmode==FTS3_EVAL_NEXT)
- );
-
- if( 0==(rc = fts3EvalExpr(p, pExpr->pRight, &aRight, &nRight, isReqPos))
- && 0==(rc = fts3EvalExpr(p, pExpr->pLeft, &aLeft, &nLeft, isReqPos))
- ){
- switch( pExpr->eType ){
- case FTSQUERY_NEAR: {
- Fts3Expr *pLeft;
- Fts3Expr *pRight;
- int mergetype = MERGE_NEAR;
- if( pExpr->pParent && pExpr->pParent->eType==FTSQUERY_NEAR ){
- mergetype = MERGE_POS_NEAR;
- }
- pLeft = pExpr->pLeft;
- while( pLeft->eType==FTSQUERY_NEAR ){
- pLeft=pLeft->pRight;
- }
- pRight = pExpr->pRight;
- assert( pRight->eType==FTSQUERY_PHRASE );
- assert( pLeft->eType==FTSQUERY_PHRASE );
-
- rc = fts3NearMerge(mergetype, pExpr->nNear,
- pLeft->pPhrase->nToken, aLeft, nLeft,
- pRight->pPhrase->nToken, aRight, nRight,
- paOut, pnOut
- );
- sqlite3_free(aLeft);
- break;
- }
-
- case FTSQUERY_OR: {
- /* Allocate a buffer for the output. The maximum size is the
- ** sum of the sizes of the two input buffers. The +1 term is
- ** so that a buffer of zero bytes is never allocated - this can
- ** cause fts3DoclistMerge() to incorrectly return SQLITE_NOMEM.
- */
- char *aBuffer = sqlite3_malloc(nRight+nLeft+1);
- rc = fts3DoclistMerge(MERGE_OR, 0, 0, aBuffer, pnOut,
- aLeft, nLeft, aRight, nRight, 0
- );
- *paOut = aBuffer;
- sqlite3_free(aLeft);
- break;
- }
-
- default: {
- assert( FTSQUERY_NOT==MERGE_NOT && FTSQUERY_AND==MERGE_AND );
- fts3DoclistMerge(pExpr->eType, 0, 0, aLeft, pnOut,
- aLeft, nLeft, aRight, nRight, 0
- );
- *paOut = aLeft;
- break;
- }
- }
- }
- sqlite3_free(aRight);
- }
- }
-
- assert( rc==SQLITE_OK || *paOut==0 );
- return rc;
-}
-
-/*
-** This function is called from within xNext() for each row visited by
-** an FTS3 query. If evaluating the FTS3 query expression within xFilter()
-** was able to determine the exact set of matching rows, this function sets
-** *pbRes to true and returns SQLITE_IO immediately.
-**
-** Otherwise, if evaluating the query expression within xFilter() returned a
-** superset of the matching documents instead of an exact set (this happens
-** when the query includes very common tokens and it is deemed too expensive to
-** load their doclists from disk), this function tests if the current row
-** really does match the FTS3 query.
-**
-** If an error occurs, an SQLite error code is returned. Otherwise, SQLITE_OK
-** is returned and *pbRes is set to true if the current row matches the
-** FTS3 query (and should be included in the results returned to SQLite), or
-** false otherwise.
-*/
-static int fts3EvalDeferred(
- Fts3Cursor *pCsr, /* FTS3 cursor pointing at row to test */
- int *pbRes /* OUT: Set to true if row is a match */
-){
- int rc = SQLITE_OK;
- if( pCsr->pDeferred==0 ){
- *pbRes = 1;
- }else{
- rc = fts3CursorSeek(0, pCsr);
- if( rc==SQLITE_OK ){
- sqlite3Fts3FreeDeferredDoclists(pCsr);
- rc = sqlite3Fts3CacheDeferredDoclists(pCsr);
- }
- if( rc==SQLITE_OK ){
- char *a = 0;
- int n = 0;
- rc = fts3EvalExpr(pCsr, pCsr->pExpr, &a, &n, 0);
- assert( n>=0 );
- *pbRes = (n>0);
- sqlite3_free(a);
- }
- }
- return rc;
-}
-
-/*
** Advance the cursor to the next row in the %_content table that
** matches the search criteria. For a MATCH search, this will be
** the next row that matches. For a full-table scan, this will be
@@ -111208,31 +119201,20 @@
** subsequently to determine whether or not an EOF was hit.
*/
static int fts3NextMethod(sqlite3_vtab_cursor *pCursor){
- int res;
- int rc = SQLITE_OK; /* Return code */
+ int rc;
Fts3Cursor *pCsr = (Fts3Cursor *)pCursor;
-
- pCsr->eEvalmode = FTS3_EVAL_NEXT;
- do {
- if( pCsr->aDoclist==0 ){
- if( SQLITE_ROW!=sqlite3_step(pCsr->pStmt) ){
- pCsr->isEof = 1;
- rc = sqlite3_reset(pCsr->pStmt);
- break;
- }
- pCsr->iPrevId = sqlite3_column_int64(pCsr->pStmt, 0);
+ if( pCsr->eSearch==FTS3_DOCID_SEARCH || pCsr->eSearch==FTS3_FULLSCAN_SEARCH ){
+ if( SQLITE_ROW!=sqlite3_step(pCsr->pStmt) ){
+ pCsr->isEof = 1;
+ rc = sqlite3_reset(pCsr->pStmt);
}else{
- if( pCsr->pNextId>=&pCsr->aDoclist[pCsr->nDoclist] ){
- pCsr->isEof = 1;
- break;
- }
- sqlite3_reset(pCsr->pStmt);
- fts3GetDeltaVarint(&pCsr->pNextId, &pCsr->iPrevId);
- pCsr->isRequireSeek = 1;
- pCsr->isMatchinfoNeeded = 1;
+ pCsr->iPrevId = sqlite3_column_int64(pCsr->pStmt, 0);
+ rc = SQLITE_OK;
}
- }while( SQLITE_OK==(rc = fts3EvalDeferred(pCsr, &res)) && res==0 );
-
+ }else{
+ rc = fts3EvalNext((Fts3Cursor *)pCursor);
+ }
+ assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 );
return rc;
}
@@ -111259,11 +119241,7 @@
int nVal, /* Number of elements in apVal */
sqlite3_value **apVal /* Arguments for the indexing scheme */
){
- const char *azSql[] = {
- "SELECT * FROM %Q.'%q_content' WHERE docid = ?", /* non-full-table-scan */
- "SELECT * FROM %Q.'%q_content'", /* full-table-scan */
- };
- int rc; /* Return code */
+ int rc;
char *zSql; /* SQL statement used to access %_content */
Fts3Table *p = (Fts3Table *)pCursor->pVtab;
Fts3Cursor *pCsr = (Fts3Cursor *)pCursor;
@@ -111282,6 +119260,13 @@
sqlite3Fts3ExprFree(pCsr->pExpr);
memset(&pCursor[1], 0, sizeof(Fts3Cursor)-sizeof(sqlite3_vtab_cursor));
+ if( idxStr ){
+ pCsr->bDesc = (idxStr[0]=='D');
+ }else{
+ pCsr->bDesc = p->bDescIdx;
+ }
+ pCsr->eSearch = (i16)idxNum;
+
if( idxNum!=FTS3_DOCID_SEARCH && idxNum!=FTS3_FULLSCAN_SEARCH ){
int iCol = idxNum-FTS3_FULLTEXT_SEARCH;
const char *zQuery = (const char *)sqlite3_value_text(apVal[0]);
@@ -111290,13 +119275,13 @@
return SQLITE_NOMEM;
}
- rc = sqlite3Fts3ExprParse(p->pTokenizer, p->azColumn, p->nColumn,
- iCol, zQuery, -1, &pCsr->pExpr
+ rc = sqlite3Fts3ExprParse(p->pTokenizer, p->azColumn, p->bHasStat,
+ p->nColumn, iCol, zQuery, -1, &pCsr->pExpr
);
if( rc!=SQLITE_OK ){
if( rc==SQLITE_ERROR ){
- p->base.zErrMsg = sqlite3_mprintf("malformed MATCH expression: [%s]",
- zQuery);
+ static const char *zErr = "malformed MATCH expression: [%s]";
+ p->base.zErrMsg = sqlite3_mprintf(zErr, zQuery);
}
return rc;
}
@@ -111304,7 +119289,8 @@
rc = sqlite3Fts3ReadLock(p);
if( rc!=SQLITE_OK ) return rc;
- rc = fts3EvalExpr(pCsr, pCsr->pExpr, &pCsr->aDoclist, &pCsr->nDoclist, 0);
+ rc = fts3EvalStart(pCsr);
+
sqlite3Fts3SegmentsClose(p);
if( rc!=SQLITE_OK ) return rc;
pCsr->pNextId = pCsr->aDoclist;
@@ -111316,19 +119302,25 @@
** full-text query or docid lookup, the statement retrieves a single
** row by docid.
*/
- zSql = sqlite3_mprintf(azSql[idxNum==FTS3_FULLSCAN_SEARCH], p->zDb, p->zName);
- if( !zSql ){
- rc = SQLITE_NOMEM;
- }else{
- rc = sqlite3_prepare_v2(p->db, zSql, -1, &pCsr->pStmt, 0);
- sqlite3_free(zSql);
+ if( idxNum==FTS3_FULLSCAN_SEARCH ){
+ zSql = sqlite3_mprintf(
+ "SELECT %s ORDER BY rowid %s",
+ p->zReadExprlist, (pCsr->bDesc ? "DESC" : "ASC")
+ );
+ if( zSql ){
+ rc = sqlite3_prepare_v2(p->db, zSql, -1, &pCsr->pStmt, 0);
+ sqlite3_free(zSql);
+ }else{
+ rc = SQLITE_NOMEM;
+ }
+ }else if( idxNum==FTS3_DOCID_SEARCH ){
+ rc = fts3CursorSeekStmt(pCsr, &pCsr->pStmt);
+ if( rc==SQLITE_OK ){
+ rc = sqlite3_bind_value(pCsr->pStmt, 1, apVal[0]);
+ }
}
- if( rc==SQLITE_OK && idxNum==FTS3_DOCID_SEARCH ){
- rc = sqlite3_bind_value(pCsr->pStmt, 1, apVal[0]);
- }
- pCsr->eSearch = (i16)idxNum;
-
if( rc!=SQLITE_OK ) return rc;
+
return fts3NextMethod(pCursor);
}
@@ -111348,16 +119340,7 @@
*/
static int fts3RowidMethod(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){
Fts3Cursor *pCsr = (Fts3Cursor *) pCursor;
- if( pCsr->aDoclist ){
- *pRowid = pCsr->iPrevId;
- }else{
- /* This branch runs if the query is implemented using a full-table scan
- ** (not using the full-text index). In this case grab the rowid from the
- ** SELECT statement.
- */
- assert( pCsr->isRequireSeek==0 );
- *pRowid = sqlite3_column_int64(pCsr->pStmt, 0);
- }
+ *pRowid = pCsr->iPrevId;
return SQLITE_OK;
}
@@ -111370,7 +119353,7 @@
sqlite3_context *pContext, /* Context for sqlite3_result_xxx() calls */
int iCol /* Index of column to read value from */
){
- int rc; /* Return Code */
+ int rc = SQLITE_OK; /* Return Code */
Fts3Cursor *pCsr = (Fts3Cursor *) pCursor;
Fts3Table *p = (Fts3Table *)pCursor->pVtab;
@@ -111381,21 +119364,20 @@
/* This call is a request for the "docid" column. Since "docid" is an
** alias for "rowid", use the xRowid() method to obtain the value.
*/
- sqlite3_int64 iRowid;
- rc = fts3RowidMethod(pCursor, &iRowid);
- sqlite3_result_int64(pContext, iRowid);
+ sqlite3_result_int64(pContext, pCsr->iPrevId);
}else if( iCol==p->nColumn ){
/* The extra column whose name is the same as the table.
** Return a blob which is a pointer to the cursor.
*/
sqlite3_result_blob(pContext, &pCsr, sizeof(pCsr), SQLITE_TRANSIENT);
- rc = SQLITE_OK;
}else{
rc = fts3CursorSeek(0, pCsr);
- if( rc==SQLITE_OK ){
+ if( rc==SQLITE_OK && sqlite3_data_count(pCsr->pStmt)>(iCol+1) ){
sqlite3_result_value(pContext, sqlite3_column_value(pCsr->pStmt, iCol+1));
}
}
+
+ assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 );
return rc;
}
@@ -111427,8 +119409,13 @@
** Implementation of xBegin() method. This is a no-op.
*/
static int fts3BeginMethod(sqlite3_vtab *pVtab){
+ TESTONLY( Fts3Table *p = (Fts3Table*)pVtab );
UNUSED_PARAMETER(pVtab);
- assert( ((Fts3Table *)pVtab)->nPendingData==0 );
+ assert( p->pSegments==0 );
+ assert( p->nPendingData==0 );
+ assert( p->inTransaction!=1 );
+ TESTONLY( p->inTransaction = 1 );
+ TESTONLY( p->mxSavepoint = -1; );
return SQLITE_OK;
}
@@ -111438,8 +119425,13 @@
** by fts3SyncMethod().
*/
static int fts3CommitMethod(sqlite3_vtab *pVtab){
+ TESTONLY( Fts3Table *p = (Fts3Table*)pVtab );
UNUSED_PARAMETER(pVtab);
- assert( ((Fts3Table *)pVtab)->nPendingData==0 );
+ assert( p->nPendingData==0 );
+ assert( p->inTransaction!=0 );
+ assert( p->pSegments==0 );
+ TESTONLY( p->inTransaction = 0 );
+ TESTONLY( p->mxSavepoint = -1; );
return SQLITE_OK;
}
@@ -111448,86 +119440,31 @@
** hash-table. Any changes made to the database are reverted by SQLite.
*/
static int fts3RollbackMethod(sqlite3_vtab *pVtab){
- sqlite3Fts3PendingTermsClear((Fts3Table *)pVtab);
+ Fts3Table *p = (Fts3Table*)pVtab;
+ sqlite3Fts3PendingTermsClear(p);
+ assert( p->inTransaction!=0 );
+ TESTONLY( p->inTransaction = 0 );
+ TESTONLY( p->mxSavepoint = -1; );
return SQLITE_OK;
}
/*
-** Load the doclist associated with expression pExpr to pExpr->aDoclist.
-** The loaded doclist contains positions as well as the document ids.
-** This is used by the matchinfo(), snippet() and offsets() auxillary
-** functions.
+** When called, *ppPoslist must point to the byte immediately following the
+** end of a position-list. i.e. ( (*ppPoslist)[-1]==POS_END ). This function
+** moves *ppPoslist so that it instead points to the first byte of the
+** same position list.
*/
-SQLITE_PRIVATE int sqlite3Fts3ExprLoadDoclist(Fts3Cursor *pCsr, Fts3Expr *pExpr){
- int rc;
- assert( pExpr->eType==FTSQUERY_PHRASE && pExpr->pPhrase );
- assert( pCsr->eEvalmode==FTS3_EVAL_NEXT );
- rc = fts3EvalExpr(pCsr, pExpr, &pExpr->aDoclist, &pExpr->nDoclist, 1);
- return rc;
-}
+static void fts3ReversePoslist(char *pStart, char **ppPoslist){
+ char *p = &(*ppPoslist)[-2];
+ char c = 0;
-SQLITE_PRIVATE int sqlite3Fts3ExprLoadFtDoclist(
- Fts3Cursor *pCsr,
- Fts3Expr *pExpr,
- char **paDoclist,
- int *pnDoclist
-){
- int rc;
- assert( pCsr->eEvalmode==FTS3_EVAL_NEXT );
- assert( pExpr->eType==FTSQUERY_PHRASE && pExpr->pPhrase );
- pCsr->eEvalmode = FTS3_EVAL_MATCHINFO;
- rc = fts3EvalExpr(pCsr, pExpr, paDoclist, pnDoclist, 1);
- pCsr->eEvalmode = FTS3_EVAL_NEXT;
- return rc;
-}
-
-/*
-** After ExprLoadDoclist() (see above) has been called, this function is
-** used to iterate/search through the position lists that make up the doclist
-** stored in pExpr->aDoclist.
-*/
-SQLITE_PRIVATE char *sqlite3Fts3FindPositions(
- Fts3Expr *pExpr, /* Access this expressions doclist */
- sqlite3_int64 iDocid, /* Docid associated with requested pos-list */
- int iCol /* Column of requested pos-list */
-){
- assert( pExpr->isLoaded );
- if( pExpr->aDoclist ){
- char *pEnd = &pExpr->aDoclist[pExpr->nDoclist];
- char *pCsr = pExpr->pCurrent;
-
- assert( pCsr );
- while( pCsr<pEnd ){
- if( pExpr->iCurrent<iDocid ){
- fts3PoslistCopy(0, &pCsr);
- if( pCsr<pEnd ){
- fts3GetDeltaVarint(&pCsr, &pExpr->iCurrent);
- }
- pExpr->pCurrent = pCsr;
- }else{
- if( pExpr->iCurrent==iDocid ){
- int iThis = 0;
- if( iCol<0 ){
- /* If iCol is negative, return a pointer to the start of the
- ** position-list (instead of a pointer to the start of a list
- ** of offsets associated with a specific column).
- */
- return pCsr;
- }
- while( iThis<iCol ){
- fts3ColumnlistCopy(0, &pCsr);
- if( *pCsr==0x00 ) return 0;
- pCsr++;
- pCsr += sqlite3Fts3GetVarint32(pCsr, &iThis);
- }
- if( iCol==iThis && (*pCsr&0xFE) ) return pCsr;
- }
- return 0;
- }
- }
+ while( p>pStart && (c=*p--)==0 );
+ while( p>pStart && (*p & 0x80) | c ){
+ c = *p--;
}
-
- return 0;
+ if( p>pStart ){ p = &p[2]; }
+ while( *p++&0x80 );
+ *ppPoslist = p;
}
/*
@@ -111728,15 +119665,22 @@
sqlite3 *db = p->db; /* Database connection */
int rc; /* Return Code */
+ /* As it happens, the pending terms table is always empty here. This is
+ ** because an "ALTER TABLE RENAME TABLE" statement inside a transaction
+ ** always opens a savepoint transaction. And the xSavepoint() method
+ ** flushes the pending terms table. But leave the (no-op) call to
+ ** PendingTermsFlush() in in case that changes.
+ */
+ assert( p->nPendingData==0 );
rc = sqlite3Fts3PendingTermsFlush(p);
- if( rc!=SQLITE_OK ){
- return rc;
+
+ if( p->zContentTbl==0 ){
+ fts3DbExec(&rc, db,
+ "ALTER TABLE %Q.'%q_content' RENAME TO '%q_content';",
+ p->zDb, p->zName, zName
+ );
}
- fts3DbExec(&rc, db,
- "ALTER TABLE %Q.'%q_content' RENAME TO '%q_content';",
- p->zDb, p->zName, zName
- );
if( p->bHasDocsize ){
fts3DbExec(&rc, db,
"ALTER TABLE %Q.'%q_docsize' RENAME TO '%q_docsize';",
@@ -111760,8 +119704,51 @@
return rc;
}
+/*
+** The xSavepoint() method.
+**
+** Flush the contents of the pending-terms table to disk.
+*/
+static int fts3SavepointMethod(sqlite3_vtab *pVtab, int iSavepoint){
+ UNUSED_PARAMETER(iSavepoint);
+ assert( ((Fts3Table *)pVtab)->inTransaction );
+ assert( ((Fts3Table *)pVtab)->mxSavepoint < iSavepoint );
+ TESTONLY( ((Fts3Table *)pVtab)->mxSavepoint = iSavepoint );
+ return fts3SyncMethod(pVtab);
+}
+
+/*
+** The xRelease() method.
+**
+** This is a no-op.
+*/
+static int fts3ReleaseMethod(sqlite3_vtab *pVtab, int iSavepoint){
+ TESTONLY( Fts3Table *p = (Fts3Table*)pVtab );
+ UNUSED_PARAMETER(iSavepoint);
+ UNUSED_PARAMETER(pVtab);
+ assert( p->inTransaction );
+ assert( p->mxSavepoint >= iSavepoint );
+ TESTONLY( p->mxSavepoint = iSavepoint-1 );
+ return SQLITE_OK;
+}
+
+/*
+** The xRollbackTo() method.
+**
+** Discard the contents of the pending terms table.
+*/
+static int fts3RollbackToMethod(sqlite3_vtab *pVtab, int iSavepoint){
+ Fts3Table *p = (Fts3Table*)pVtab;
+ UNUSED_PARAMETER(iSavepoint);
+ assert( p->inTransaction );
+ assert( p->mxSavepoint >= iSavepoint );
+ TESTONLY( p->mxSavepoint = iSavepoint );
+ sqlite3Fts3PendingTermsClear(p);
+ return SQLITE_OK;
+}
+
static const sqlite3_module fts3Module = {
- /* iVersion */ 0,
+ /* iVersion */ 2,
/* xCreate */ fts3CreateMethod,
/* xConnect */ fts3ConnectMethod,
/* xBestIndex */ fts3BestIndexMethod,
@@ -111781,6 +119768,9 @@
/* xRollback */ fts3RollbackMethod,
/* xFindFunction */ fts3FindFunctionMethod,
/* xRename */ fts3RenameMethod,
+ /* xSavepoint */ fts3SavepointMethod,
+ /* xRelease */ fts3ReleaseMethod,
+ /* xRollbackTo */ fts3RollbackToMethod,
};
/*
@@ -111827,6 +119817,14 @@
sqlite3Fts3IcuTokenizerModule(&pIcu);
#endif
+#ifdef SQLITE_TEST
+ rc = sqlite3Fts3InitTerm(db);
+ if( rc!=SQLITE_OK ) return rc;
+#endif
+
+ rc = sqlite3Fts3InitAux(db);
+ if( rc!=SQLITE_OK ) return rc;
+
sqlite3Fts3SimpleTokenizerModule(&pSimple);
sqlite3Fts3PorterTokenizerModule(&pPorter);
@@ -111891,7 +119889,1578 @@
return rc;
}
+/*
+** Allocate an Fts3MultiSegReader for each token in the expression headed
+** by pExpr.
+**
+** An Fts3SegReader object is a cursor that can seek or scan a range of
+** entries within a single segment b-tree. An Fts3MultiSegReader uses multiple
+** Fts3SegReader objects internally to provide an interface to seek or scan
+** within the union of all segments of a b-tree. Hence the name.
+**
+** If the allocated Fts3MultiSegReader just seeks to a single entry in a
+** segment b-tree (if the term is not a prefix or it is a prefix for which
+** there exists prefix b-tree of the right length) then it may be traversed
+** and merged incrementally. Otherwise, it has to be merged into an in-memory
+** doclist and then traversed.
+*/
+static void fts3EvalAllocateReaders(
+ Fts3Cursor *pCsr, /* FTS cursor handle */
+ Fts3Expr *pExpr, /* Allocate readers for this expression */
+ int *pnToken, /* OUT: Total number of tokens in phrase. */
+ int *pnOr, /* OUT: Total number of OR nodes in expr. */
+ int *pRc /* IN/OUT: Error code */
+){
+ if( pExpr && SQLITE_OK==*pRc ){
+ if( pExpr->eType==FTSQUERY_PHRASE ){
+ int i;
+ int nToken = pExpr->pPhrase->nToken;
+ *pnToken += nToken;
+ for(i=0; i<nToken; i++){
+ Fts3PhraseToken *pToken = &pExpr->pPhrase->aToken[i];
+ int rc = fts3TermSegReaderCursor(pCsr,
+ pToken->z, pToken->n, pToken->isPrefix, &pToken->pSegcsr
+ );
+ if( rc!=SQLITE_OK ){
+ *pRc = rc;
+ return;
+ }
+ }
+ assert( pExpr->pPhrase->iDoclistToken==0 );
+ pExpr->pPhrase->iDoclistToken = -1;
+ }else{
+ *pnOr += (pExpr->eType==FTSQUERY_OR);
+ fts3EvalAllocateReaders(pCsr, pExpr->pLeft, pnToken, pnOr, pRc);
+ fts3EvalAllocateReaders(pCsr, pExpr->pRight, pnToken, pnOr, pRc);
+ }
+ }
+}
+
+/*
+** Arguments pList/nList contain the doclist for token iToken of phrase p.
+** It is merged into the main doclist stored in p->doclist.aAll/nAll.
+**
+** This function assumes that pList points to a buffer allocated using
+** sqlite3_malloc(). This function takes responsibility for eventually
+** freeing the buffer.
+*/
+static void fts3EvalPhraseMergeToken(
+ Fts3Table *pTab, /* FTS Table pointer */
+ Fts3Phrase *p, /* Phrase to merge pList/nList into */
+ int iToken, /* Token pList/nList corresponds to */
+ char *pList, /* Pointer to doclist */
+ int nList /* Number of bytes in pList */
+){
+ assert( iToken!=p->iDoclistToken );
+
+ if( pList==0 ){
+ sqlite3_free(p->doclist.aAll);
+ p->doclist.aAll = 0;
+ p->doclist.nAll = 0;
+ }
+
+ else if( p->iDoclistToken<0 ){
+ p->doclist.aAll = pList;
+ p->doclist.nAll = nList;
+ }
+
+ else if( p->doclist.aAll==0 ){
+ sqlite3_free(pList);
+ }
+
+ else {
+ char *pLeft;
+ char *pRight;
+ int nLeft;
+ int nRight;
+ int nDiff;
+
+ if( p->iDoclistToken<iToken ){
+ pLeft = p->doclist.aAll;
+ nLeft = p->doclist.nAll;
+ pRight = pList;
+ nRight = nList;
+ nDiff = iToken - p->iDoclistToken;
+ }else{
+ pRight = p->doclist.aAll;
+ nRight = p->doclist.nAll;
+ pLeft = pList;
+ nLeft = nList;
+ nDiff = p->iDoclistToken - iToken;
+ }
+
+ fts3DoclistPhraseMerge(pTab->bDescIdx, nDiff, pLeft, nLeft, pRight,&nRight);
+ sqlite3_free(pLeft);
+ p->doclist.aAll = pRight;
+ p->doclist.nAll = nRight;
+ }
+
+ if( iToken>p->iDoclistToken ) p->iDoclistToken = iToken;
+}
+
+/*
+** Load the doclist for phrase p into p->doclist.aAll/nAll. The loaded doclist
+** does not take deferred tokens into account.
+**
+** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code.
+*/
+static int fts3EvalPhraseLoad(
+ Fts3Cursor *pCsr, /* FTS Cursor handle */
+ Fts3Phrase *p /* Phrase object */
+){
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+ int iToken;
+ int rc = SQLITE_OK;
+
+ for(iToken=0; rc==SQLITE_OK && iToken<p->nToken; iToken++){
+ Fts3PhraseToken *pToken = &p->aToken[iToken];
+ assert( pToken->pDeferred==0 || pToken->pSegcsr==0 );
+
+ if( pToken->pSegcsr ){
+ int nThis = 0;
+ char *pThis = 0;
+ rc = fts3TermSelect(pTab, pToken, p->iColumn, &nThis, &pThis);
+ if( rc==SQLITE_OK ){
+ fts3EvalPhraseMergeToken(pTab, p, iToken, pThis, nThis);
+ }
+ }
+ assert( pToken->pSegcsr==0 );
+ }
+
+ return rc;
+}
+
+/*
+** This function is called on each phrase after the position lists for
+** any deferred tokens have been loaded into memory. It updates the phrases
+** current position list to include only those positions that are really
+** instances of the phrase (after considering deferred tokens). If this
+** means that the phrase does not appear in the current row, doclist.pList
+** and doclist.nList are both zeroed.
+**
+** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code.
+*/
+static int fts3EvalDeferredPhrase(Fts3Cursor *pCsr, Fts3Phrase *pPhrase){
+ int iToken; /* Used to iterate through phrase tokens */
+ char *aPoslist = 0; /* Position list for deferred tokens */
+ int nPoslist = 0; /* Number of bytes in aPoslist */
+ int iPrev = -1; /* Token number of previous deferred token */
+
+ assert( pPhrase->doclist.bFreeList==0 );
+
+ for(iToken=0; iToken<pPhrase->nToken; iToken++){
+ Fts3PhraseToken *pToken = &pPhrase->aToken[iToken];
+ Fts3DeferredToken *pDeferred = pToken->pDeferred;
+
+ if( pDeferred ){
+ char *pList;
+ int nList;
+ int rc = sqlite3Fts3DeferredTokenList(pDeferred, &pList, &nList);
+ if( rc!=SQLITE_OK ) return rc;
+
+ if( pList==0 ){
+ sqlite3_free(aPoslist);
+ pPhrase->doclist.pList = 0;
+ pPhrase->doclist.nList = 0;
+ return SQLITE_OK;
+
+ }else if( aPoslist==0 ){
+ aPoslist = pList;
+ nPoslist = nList;
+
+ }else{
+ char *aOut = pList;
+ char *p1 = aPoslist;
+ char *p2 = aOut;
+
+ assert( iPrev>=0 );
+ fts3PoslistPhraseMerge(&aOut, iToken-iPrev, 0, 1, &p1, &p2);
+ sqlite3_free(aPoslist);
+ aPoslist = pList;
+ nPoslist = aOut - aPoslist;
+ if( nPoslist==0 ){
+ sqlite3_free(aPoslist);
+ pPhrase->doclist.pList = 0;
+ pPhrase->doclist.nList = 0;
+ return SQLITE_OK;
+ }
+ }
+ iPrev = iToken;
+ }
+ }
+
+ if( iPrev>=0 ){
+ int nMaxUndeferred = pPhrase->iDoclistToken;
+ if( nMaxUndeferred<0 ){
+ pPhrase->doclist.pList = aPoslist;
+ pPhrase->doclist.nList = nPoslist;
+ pPhrase->doclist.iDocid = pCsr->iPrevId;
+ pPhrase->doclist.bFreeList = 1;
+ }else{
+ int nDistance;
+ char *p1;
+ char *p2;
+ char *aOut;
+
+ if( nMaxUndeferred>iPrev ){
+ p1 = aPoslist;
+ p2 = pPhrase->doclist.pList;
+ nDistance = nMaxUndeferred - iPrev;
+ }else{
+ p1 = pPhrase->doclist.pList;
+ p2 = aPoslist;
+ nDistance = iPrev - nMaxUndeferred;
+ }
+
+ aOut = (char *)sqlite3_malloc(nPoslist+8);
+ if( !aOut ){
+ sqlite3_free(aPoslist);
+ return SQLITE_NOMEM;
+ }
+
+ pPhrase->doclist.pList = aOut;
+ if( fts3PoslistPhraseMerge(&aOut, nDistance, 0, 1, &p1, &p2) ){
+ pPhrase->doclist.bFreeList = 1;
+ pPhrase->doclist.nList = (aOut - pPhrase->doclist.pList);
+ }else{
+ sqlite3_free(aOut);
+ pPhrase->doclist.pList = 0;
+ pPhrase->doclist.nList = 0;
+ }
+ sqlite3_free(aPoslist);
+ }
+ }
+
+ return SQLITE_OK;
+}
+
+/*
+** This function is called for each Fts3Phrase in a full-text query
+** expression to initialize the mechanism for returning rows. Once this
+** function has been called successfully on an Fts3Phrase, it may be
+** used with fts3EvalPhraseNext() to iterate through the matching docids.
+**
+** If parameter bOptOk is true, then the phrase may (or may not) use the
+** incremental loading strategy. Otherwise, the entire doclist is loaded into
+** memory within this call.
+**
+** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code.
+*/
+static int fts3EvalPhraseStart(Fts3Cursor *pCsr, int bOptOk, Fts3Phrase *p){
+ int rc; /* Error code */
+ Fts3PhraseToken *pFirst = &p->aToken[0];
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+
+ if( pCsr->bDesc==pTab->bDescIdx
+ && bOptOk==1
+ && p->nToken==1
+ && pFirst->pSegcsr
+ && pFirst->pSegcsr->bLookup
+ && pFirst->bFirst==0
+ ){
+ /* Use the incremental approach. */
+ int iCol = (p->iColumn >= pTab->nColumn ? -1 : p->iColumn);
+ rc = sqlite3Fts3MsrIncrStart(
+ pTab, pFirst->pSegcsr, iCol, pFirst->z, pFirst->n);
+ p->bIncr = 1;
+
+ }else{
+ /* Load the full doclist for the phrase into memory. */
+ rc = fts3EvalPhraseLoad(pCsr, p);
+ p->bIncr = 0;
+ }
+
+ assert( rc!=SQLITE_OK || p->nToken<1 || p->aToken[0].pSegcsr==0 || p->bIncr );
+ return rc;
+}
+
+/*
+** This function is used to iterate backwards (from the end to start)
+** through doclists. It is used by this module to iterate through phrase
+** doclists in reverse and by the fts3_write.c module to iterate through
+** pending-terms lists when writing to databases with "order=desc".
+**
+** The doclist may be sorted in ascending (parameter bDescIdx==0) or
+** descending (parameter bDescIdx==1) order of docid. Regardless, this
+** function iterates from the end of the doclist to the beginning.
+*/
+SQLITE_PRIVATE void sqlite3Fts3DoclistPrev(
+ int bDescIdx, /* True if the doclist is desc */
+ char *aDoclist, /* Pointer to entire doclist */
+ int nDoclist, /* Length of aDoclist in bytes */
+ char **ppIter, /* IN/OUT: Iterator pointer */
+ sqlite3_int64 *piDocid, /* IN/OUT: Docid pointer */
+ int *pnList, /* IN/OUT: List length pointer */
+ u8 *pbEof /* OUT: End-of-file flag */
+){
+ char *p = *ppIter;
+
+ assert( nDoclist>0 );
+ assert( *pbEof==0 );
+ assert( p || *piDocid==0 );
+ assert( !p || (p>aDoclist && p<&aDoclist[nDoclist]) );
+
+ if( p==0 ){
+ sqlite3_int64 iDocid = 0;
+ char *pNext = 0;
+ char *pDocid = aDoclist;
+ char *pEnd = &aDoclist[nDoclist];
+ int iMul = 1;
+
+ while( pDocid<pEnd ){
+ sqlite3_int64 iDelta;
+ pDocid += sqlite3Fts3GetVarint(pDocid, &iDelta);
+ iDocid += (iMul * iDelta);
+ pNext = pDocid;
+ fts3PoslistCopy(0, &pDocid);
+ while( pDocid<pEnd && *pDocid==0 ) pDocid++;
+ iMul = (bDescIdx ? -1 : 1);
+ }
+
+ *pnList = pEnd - pNext;
+ *ppIter = pNext;
+ *piDocid = iDocid;
+ }else{
+ int iMul = (bDescIdx ? -1 : 1);
+ sqlite3_int64 iDelta;
+ fts3GetReverseVarint(&p, aDoclist, &iDelta);
+ *piDocid -= (iMul * iDelta);
+
+ if( p==aDoclist ){
+ *pbEof = 1;
+ }else{
+ char *pSave = p;
+ fts3ReversePoslist(aDoclist, &p);
+ *pnList = (pSave - p);
+ }
+ *ppIter = p;
+ }
+}
+
+/*
+** Attempt to move the phrase iterator to point to the next matching docid.
+** If an error occurs, return an SQLite error code. Otherwise, return
+** SQLITE_OK.
+**
+** If there is no "next" entry and no error occurs, then *pbEof is set to
+** 1 before returning. Otherwise, if no error occurs and the iterator is
+** successfully advanced, *pbEof is set to 0.
+*/
+static int fts3EvalPhraseNext(
+ Fts3Cursor *pCsr, /* FTS Cursor handle */
+ Fts3Phrase *p, /* Phrase object to advance to next docid */
+ u8 *pbEof /* OUT: Set to 1 if EOF */
+){
+ int rc = SQLITE_OK;
+ Fts3Doclist *pDL = &p->doclist;
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+
+ if( p->bIncr ){
+ assert( p->nToken==1 );
+ assert( pDL->pNextDocid==0 );
+ rc = sqlite3Fts3MsrIncrNext(pTab, p->aToken[0].pSegcsr,
+ &pDL->iDocid, &pDL->pList, &pDL->nList
+ );
+ if( rc==SQLITE_OK && !pDL->pList ){
+ *pbEof = 1;
+ }
+ }else if( pCsr->bDesc!=pTab->bDescIdx && pDL->nAll ){
+ sqlite3Fts3DoclistPrev(pTab->bDescIdx, pDL->aAll, pDL->nAll,
+ &pDL->pNextDocid, &pDL->iDocid, &pDL->nList, pbEof
+ );
+ pDL->pList = pDL->pNextDocid;
+ }else{
+ char *pIter; /* Used to iterate through aAll */
+ char *pEnd = &pDL->aAll[pDL->nAll]; /* 1 byte past end of aAll */
+ if( pDL->pNextDocid ){
+ pIter = pDL->pNextDocid;
+ }else{
+ pIter = pDL->aAll;
+ }
+
+ if( pIter>=pEnd ){
+ /* We have already reached the end of this doclist. EOF. */
+ *pbEof = 1;
+ }else{
+ sqlite3_int64 iDelta;
+ pIter += sqlite3Fts3GetVarint(pIter, &iDelta);
+ if( pTab->bDescIdx==0 || pDL->pNextDocid==0 ){
+ pDL->iDocid += iDelta;
+ }else{
+ pDL->iDocid -= iDelta;
+ }
+ pDL->pList = pIter;
+ fts3PoslistCopy(0, &pIter);
+ pDL->nList = (pIter - pDL->pList);
+
+ /* pIter now points just past the 0x00 that terminates the position-
+ ** list for document pDL->iDocid. However, if this position-list was
+ ** edited in place by fts3EvalNearTrim(), then pIter may not actually
+ ** point to the start of the next docid value. The following line deals
+ ** with this case by advancing pIter past the zero-padding added by
+ ** fts3EvalNearTrim(). */
+ while( pIter<pEnd && *pIter==0 ) pIter++;
+
+ pDL->pNextDocid = pIter;
+ assert( pIter>=&pDL->aAll[pDL->nAll] || *pIter );
+ *pbEof = 0;
+ }
+ }
+
+ return rc;
+}
+
+/*
+**
+** If *pRc is not SQLITE_OK when this function is called, it is a no-op.
+** Otherwise, fts3EvalPhraseStart() is called on all phrases within the
+** expression. Also the Fts3Expr.bDeferred variable is set to true for any
+** expressions for which all descendent tokens are deferred.
+**
+** If parameter bOptOk is zero, then it is guaranteed that the
+** Fts3Phrase.doclist.aAll/nAll variables contain the entire doclist for
+** each phrase in the expression (subject to deferred token processing).
+** Or, if bOptOk is non-zero, then one or more tokens within the expression
+** may be loaded incrementally, meaning doclist.aAll/nAll is not available.
+**
+** If an error occurs within this function, *pRc is set to an SQLite error
+** code before returning.
+*/
+static void fts3EvalStartReaders(
+ Fts3Cursor *pCsr, /* FTS Cursor handle */
+ Fts3Expr *pExpr, /* Expression to initialize phrases in */
+ int bOptOk, /* True to enable incremental loading */
+ int *pRc /* IN/OUT: Error code */
+){
+ if( pExpr && SQLITE_OK==*pRc ){
+ if( pExpr->eType==FTSQUERY_PHRASE ){
+ int i;
+ int nToken = pExpr->pPhrase->nToken;
+ for(i=0; i<nToken; i++){
+ if( pExpr->pPhrase->aToken[i].pDeferred==0 ) break;
+ }
+ pExpr->bDeferred = (i==nToken);
+ *pRc = fts3EvalPhraseStart(pCsr, bOptOk, pExpr->pPhrase);
+ }else{
+ fts3EvalStartReaders(pCsr, pExpr->pLeft, bOptOk, pRc);
+ fts3EvalStartReaders(pCsr, pExpr->pRight, bOptOk, pRc);
+ pExpr->bDeferred = (pExpr->pLeft->bDeferred && pExpr->pRight->bDeferred);
+ }
+ }
+}
+
+/*
+** An array of the following structures is assembled as part of the process
+** of selecting tokens to defer before the query starts executing (as part
+** of the xFilter() method). There is one element in the array for each
+** token in the FTS expression.
+**
+** Tokens are divided into AND/NEAR clusters. All tokens in a cluster belong
+** to phrases that are connected only by AND and NEAR operators (not OR or
+** NOT). When determining tokens to defer, each AND/NEAR cluster is considered
+** separately. The root of a tokens AND/NEAR cluster is stored in
+** Fts3TokenAndCost.pRoot.
+*/
+typedef struct Fts3TokenAndCost Fts3TokenAndCost;
+struct Fts3TokenAndCost {
+ Fts3Phrase *pPhrase; /* The phrase the token belongs to */
+ int iToken; /* Position of token in phrase */
+ Fts3PhraseToken *pToken; /* The token itself */
+ Fts3Expr *pRoot; /* Root of NEAR/AND cluster */
+ int nOvfl; /* Number of overflow pages to load doclist */
+ int iCol; /* The column the token must match */
+};
+
+/*
+** This function is used to populate an allocated Fts3TokenAndCost array.
+**
+** If *pRc is not SQLITE_OK when this function is called, it is a no-op.
+** Otherwise, if an error occurs during execution, *pRc is set to an
+** SQLite error code.
+*/
+static void fts3EvalTokenCosts(
+ Fts3Cursor *pCsr, /* FTS Cursor handle */
+ Fts3Expr *pRoot, /* Root of current AND/NEAR cluster */
+ Fts3Expr *pExpr, /* Expression to consider */
+ Fts3TokenAndCost **ppTC, /* Write new entries to *(*ppTC)++ */
+ Fts3Expr ***ppOr, /* Write new OR root to *(*ppOr)++ */
+ int *pRc /* IN/OUT: Error code */
+){
+ if( *pRc==SQLITE_OK ){
+ if( pExpr->eType==FTSQUERY_PHRASE ){
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
+ int i;
+ for(i=0; *pRc==SQLITE_OK && i<pPhrase->nToken; i++){
+ Fts3TokenAndCost *pTC = (*ppTC)++;
+ pTC->pPhrase = pPhrase;
+ pTC->iToken = i;
+ pTC->pRoot = pRoot;
+ pTC->pToken = &pPhrase->aToken[i];
+ pTC->iCol = pPhrase->iColumn;
+ *pRc = sqlite3Fts3MsrOvfl(pCsr, pTC->pToken->pSegcsr, &pTC->nOvfl);
+ }
+ }else if( pExpr->eType!=FTSQUERY_NOT ){
+ assert( pExpr->eType==FTSQUERY_OR
+ || pExpr->eType==FTSQUERY_AND
+ || pExpr->eType==FTSQUERY_NEAR
+ );
+ assert( pExpr->pLeft && pExpr->pRight );
+ if( pExpr->eType==FTSQUERY_OR ){
+ pRoot = pExpr->pLeft;
+ **ppOr = pRoot;
+ (*ppOr)++;
+ }
+ fts3EvalTokenCosts(pCsr, pRoot, pExpr->pLeft, ppTC, ppOr, pRc);
+ if( pExpr->eType==FTSQUERY_OR ){
+ pRoot = pExpr->pRight;
+ **ppOr = pRoot;
+ (*ppOr)++;
+ }
+ fts3EvalTokenCosts(pCsr, pRoot, pExpr->pRight, ppTC, ppOr, pRc);
+ }
+ }
+}
+
+/*
+** Determine the average document (row) size in pages. If successful,
+** write this value to *pnPage and return SQLITE_OK. Otherwise, return
+** an SQLite error code.
+**
+** The average document size in pages is calculated by first calculating
+** determining the average size in bytes, B. If B is less than the amount
+** of data that will fit on a single leaf page of an intkey table in
+** this database, then the average docsize is 1. Otherwise, it is 1 plus
+** the number of overflow pages consumed by a record B bytes in size.
+*/
+static int fts3EvalAverageDocsize(Fts3Cursor *pCsr, int *pnPage){
+ if( pCsr->nRowAvg==0 ){
+ /* The average document size, which is required to calculate the cost
+ ** of each doclist, has not yet been determined. Read the required
+ ** data from the %_stat table to calculate it.
+ **
+ ** Entry 0 of the %_stat table is a blob containing (nCol+1) FTS3
+ ** varints, where nCol is the number of columns in the FTS3 table.
+ ** The first varint is the number of documents currently stored in
+ ** the table. The following nCol varints contain the total amount of
+ ** data stored in all rows of each column of the table, from left
+ ** to right.
+ */
+ int rc;
+ Fts3Table *p = (Fts3Table*)pCsr->base.pVtab;
+ sqlite3_stmt *pStmt;
+ sqlite3_int64 nDoc = 0;
+ sqlite3_int64 nByte = 0;
+ const char *pEnd;
+ const char *a;
+
+ rc = sqlite3Fts3SelectDoctotal(p, &pStmt);
+ if( rc!=SQLITE_OK ) return rc;
+ a = sqlite3_column_blob(pStmt, 0);
+ assert( a );
+
+ pEnd = &a[sqlite3_column_bytes(pStmt, 0)];
+ a += sqlite3Fts3GetVarint(a, &nDoc);
+ while( a<pEnd ){
+ a += sqlite3Fts3GetVarint(a, &nByte);
+ }
+ if( nDoc==0 || nByte==0 ){
+ sqlite3_reset(pStmt);
+ return FTS_CORRUPT_VTAB;
+ }
+
+ pCsr->nDoc = nDoc;
+ pCsr->nRowAvg = (int)(((nByte / nDoc) + p->nPgsz) / p->nPgsz);
+ assert( pCsr->nRowAvg>0 );
+ rc = sqlite3_reset(pStmt);
+ if( rc!=SQLITE_OK ) return rc;
+ }
+
+ *pnPage = pCsr->nRowAvg;
+ return SQLITE_OK;
+}
+
+/*
+** This function is called to select the tokens (if any) that will be
+** deferred. The array aTC[] has already been populated when this is
+** called.
+**
+** This function is called once for each AND/NEAR cluster in the
+** expression. Each invocation determines which tokens to defer within
+** the cluster with root node pRoot. See comments above the definition
+** of struct Fts3TokenAndCost for more details.
+**
+** If no error occurs, SQLITE_OK is returned and sqlite3Fts3DeferToken()
+** called on each token to defer. Otherwise, an SQLite error code is
+** returned.
+*/
+static int fts3EvalSelectDeferred(
+ Fts3Cursor *pCsr, /* FTS Cursor handle */
+ Fts3Expr *pRoot, /* Consider tokens with this root node */
+ Fts3TokenAndCost *aTC, /* Array of expression tokens and costs */
+ int nTC /* Number of entries in aTC[] */
+){
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+ int nDocSize = 0; /* Number of pages per doc loaded */
+ int rc = SQLITE_OK; /* Return code */
+ int ii; /* Iterator variable for various purposes */
+ int nOvfl = 0; /* Total overflow pages used by doclists */
+ int nToken = 0; /* Total number of tokens in cluster */
+
+ int nMinEst = 0; /* The minimum count for any phrase so far. */
+ int nLoad4 = 1; /* (Phrases that will be loaded)^4. */
+
+ /* Tokens are never deferred for FTS tables created using the content=xxx
+ ** option. The reason being that it is not guaranteed that the content
+ ** table actually contains the same data as the index. To prevent this from
+ ** causing any problems, the deferred token optimization is completely
+ ** disabled for content=xxx tables. */
+ if( pTab->zContentTbl ){
+ return SQLITE_OK;
+ }
+
+ /* Count the tokens in this AND/NEAR cluster. If none of the doclists
+ ** associated with the tokens spill onto overflow pages, or if there is
+ ** only 1 token, exit early. No tokens to defer in this case. */
+ for(ii=0; ii<nTC; ii++){
+ if( aTC[ii].pRoot==pRoot ){
+ nOvfl += aTC[ii].nOvfl;
+ nToken++;
+ }
+ }
+ if( nOvfl==0 || nToken<2 ) return SQLITE_OK;
+
+ /* Obtain the average docsize (in pages). */
+ rc = fts3EvalAverageDocsize(pCsr, &nDocSize);
+ assert( rc!=SQLITE_OK || nDocSize>0 );
+
+
+ /* Iterate through all tokens in this AND/NEAR cluster, in ascending order
+ ** of the number of overflow pages that will be loaded by the pager layer
+ ** to retrieve the entire doclist for the token from the full-text index.
+ ** Load the doclists for tokens that are either:
+ **
+ ** a. The cheapest token in the entire query (i.e. the one visited by the
+ ** first iteration of this loop), or
+ **
+ ** b. Part of a multi-token phrase.
+ **
+ ** After each token doclist is loaded, merge it with the others from the
+ ** same phrase and count the number of documents that the merged doclist
+ ** contains. Set variable "nMinEst" to the smallest number of documents in
+ ** any phrase doclist for which 1 or more token doclists have been loaded.
+ ** Let nOther be the number of other phrases for which it is certain that
+ ** one or more tokens will not be deferred.
+ **
+ ** Then, for each token, defer it if loading the doclist would result in
+ ** loading N or more overflow pages into memory, where N is computed as:
+ **
+ ** (nMinEst + 4^nOther - 1) / (4^nOther)
+ */
+ for(ii=0; ii<nToken && rc==SQLITE_OK; ii++){
+ int iTC; /* Used to iterate through aTC[] array. */
+ Fts3TokenAndCost *pTC = 0; /* Set to cheapest remaining token. */
+
+ /* Set pTC to point to the cheapest remaining token. */
+ for(iTC=0; iTC<nTC; iTC++){
+ if( aTC[iTC].pToken && aTC[iTC].pRoot==pRoot
+ && (!pTC || aTC[iTC].nOvfl<pTC->nOvfl)
+ ){
+ pTC = &aTC[iTC];
+ }
+ }
+ assert( pTC );
+
+ if( ii && pTC->nOvfl>=((nMinEst+(nLoad4/4)-1)/(nLoad4/4))*nDocSize ){
+ /* The number of overflow pages to load for this (and therefore all
+ ** subsequent) tokens is greater than the estimated number of pages
+ ** that will be loaded if all subsequent tokens are deferred.
+ */
+ Fts3PhraseToken *pToken = pTC->pToken;
+ rc = sqlite3Fts3DeferToken(pCsr, pToken, pTC->iCol);
+ fts3SegReaderCursorFree(pToken->pSegcsr);
+ pToken->pSegcsr = 0;
+ }else{
+ /* Set nLoad4 to the value of (4^nOther) for the next iteration of the
+ ** for-loop. Except, limit the value to 2^24 to prevent it from
+ ** overflowing the 32-bit integer it is stored in. */
+ if( ii<12 ) nLoad4 = nLoad4*4;
+
+ if( ii==0 || pTC->pPhrase->nToken>1 ){
+ /* Either this is the cheapest token in the entire query, or it is
+ ** part of a multi-token phrase. Either way, the entire doclist will
+ ** (eventually) be loaded into memory. It may as well be now. */
+ Fts3PhraseToken *pToken = pTC->pToken;
+ int nList = 0;
+ char *pList = 0;
+ rc = fts3TermSelect(pTab, pToken, pTC->iCol, &nList, &pList);
+ assert( rc==SQLITE_OK || pList==0 );
+ if( rc==SQLITE_OK ){
+ int nCount;
+ fts3EvalPhraseMergeToken(pTab, pTC->pPhrase, pTC->iToken,pList,nList);
+ nCount = fts3DoclistCountDocids(
+ pTC->pPhrase->doclist.aAll, pTC->pPhrase->doclist.nAll
+ );
+ if( ii==0 || nCount<nMinEst ) nMinEst = nCount;
+ }
+ }
+ }
+ pTC->pToken = 0;
+ }
+
+ return rc;
+}
+
+/*
+** This function is called from within the xFilter method. It initializes
+** the full-text query currently stored in pCsr->pExpr. To iterate through
+** the results of a query, the caller does:
+**
+** fts3EvalStart(pCsr);
+** while( 1 ){
+** fts3EvalNext(pCsr);
+** if( pCsr->bEof ) break;
+** ... return row pCsr->iPrevId to the caller ...
+** }
+*/
+static int fts3EvalStart(Fts3Cursor *pCsr){
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+ int rc = SQLITE_OK;
+ int nToken = 0;
+ int nOr = 0;
+
+ /* Allocate a MultiSegReader for each token in the expression. */
+ fts3EvalAllocateReaders(pCsr, pCsr->pExpr, &nToken, &nOr, &rc);
+
+ /* Determine which, if any, tokens in the expression should be deferred. */
+ if( rc==SQLITE_OK && nToken>1 && pTab->bHasStat ){
+ Fts3TokenAndCost *aTC;
+ Fts3Expr **apOr;
+ aTC = (Fts3TokenAndCost *)sqlite3_malloc(
+ sizeof(Fts3TokenAndCost) * nToken
+ + sizeof(Fts3Expr *) * nOr * 2
+ );
+ apOr = (Fts3Expr **)&aTC[nToken];
+
+ if( !aTC ){
+ rc = SQLITE_NOMEM;
+ }else{
+ int ii;
+ Fts3TokenAndCost *pTC = aTC;
+ Fts3Expr **ppOr = apOr;
+
+ fts3EvalTokenCosts(pCsr, 0, pCsr->pExpr, &pTC, &ppOr, &rc);
+ nToken = pTC-aTC;
+ nOr = ppOr-apOr;
+
+ if( rc==SQLITE_OK ){
+ rc = fts3EvalSelectDeferred(pCsr, 0, aTC, nToken);
+ for(ii=0; rc==SQLITE_OK && ii<nOr; ii++){
+ rc = fts3EvalSelectDeferred(pCsr, apOr[ii], aTC, nToken);
+ }
+ }
+
+ sqlite3_free(aTC);
+ }
+ }
+
+ fts3EvalStartReaders(pCsr, pCsr->pExpr, 1, &rc);
+ return rc;
+}
+
+/*
+** Invalidate the current position list for phrase pPhrase.
+*/
+static void fts3EvalInvalidatePoslist(Fts3Phrase *pPhrase){
+ if( pPhrase->doclist.bFreeList ){
+ sqlite3_free(pPhrase->doclist.pList);
+ }
+ pPhrase->doclist.pList = 0;
+ pPhrase->doclist.nList = 0;
+ pPhrase->doclist.bFreeList = 0;
+}
+
+/*
+** This function is called to edit the position list associated with
+** the phrase object passed as the fifth argument according to a NEAR
+** condition. For example:
+**
+** abc NEAR/5 "def ghi"
+**
+** Parameter nNear is passed the NEAR distance of the expression (5 in
+** the example above). When this function is called, *paPoslist points to
+** the position list, and *pnToken is the number of phrase tokens in, the
+** phrase on the other side of the NEAR operator to pPhrase. For example,
+** if pPhrase refers to the "def ghi" phrase, then *paPoslist points to
+** the position list associated with phrase "abc".
+**
+** All positions in the pPhrase position list that are not sufficiently
+** close to a position in the *paPoslist position list are removed. If this
+** leaves 0 positions, zero is returned. Otherwise, non-zero.
+**
+** Before returning, *paPoslist is set to point to the position lsit
+** associated with pPhrase. And *pnToken is set to the number of tokens in
+** pPhrase.
+*/
+static int fts3EvalNearTrim(
+ int nNear, /* NEAR distance. As in "NEAR/nNear". */
+ char *aTmp, /* Temporary space to use */
+ char **paPoslist, /* IN/OUT: Position list */
+ int *pnToken, /* IN/OUT: Tokens in phrase of *paPoslist */
+ Fts3Phrase *pPhrase /* The phrase object to trim the doclist of */
+){
+ int nParam1 = nNear + pPhrase->nToken;
+ int nParam2 = nNear + *pnToken;
+ int nNew;
+ char *p2;
+ char *pOut;
+ int res;
+
+ assert( pPhrase->doclist.pList );
+
+ p2 = pOut = pPhrase->doclist.pList;
+ res = fts3PoslistNearMerge(
+ &pOut, aTmp, nParam1, nParam2, paPoslist, &p2
+ );
+ if( res ){
+ nNew = (pOut - pPhrase->doclist.pList) - 1;
+ assert( pPhrase->doclist.pList[nNew]=='\0' );
+ assert( nNew<=pPhrase->doclist.nList && nNew>0 );
+ memset(&pPhrase->doclist.pList[nNew], 0, pPhrase->doclist.nList - nNew);
+ pPhrase->doclist.nList = nNew;
+ *paPoslist = pPhrase->doclist.pList;
+ *pnToken = pPhrase->nToken;
+ }
+
+ return res;
+}
+
+/*
+** This function is a no-op if *pRc is other than SQLITE_OK when it is called.
+** Otherwise, it advances the expression passed as the second argument to
+** point to the next matching row in the database. Expressions iterate through
+** matching rows in docid order. Ascending order if Fts3Cursor.bDesc is zero,
+** or descending if it is non-zero.
+**
+** If an error occurs, *pRc is set to an SQLite error code. Otherwise, if
+** successful, the following variables in pExpr are set:
+**
+** Fts3Expr.bEof (non-zero if EOF - there is no next row)
+** Fts3Expr.iDocid (valid if bEof==0. The docid of the next row)
+**
+** If the expression is of type FTSQUERY_PHRASE, and the expression is not
+** at EOF, then the following variables are populated with the position list
+** for the phrase for the visited row:
+**
+** FTs3Expr.pPhrase->doclist.nList (length of pList in bytes)
+** FTs3Expr.pPhrase->doclist.pList (pointer to position list)
+**
+** It says above that this function advances the expression to the next
+** matching row. This is usually true, but there are the following exceptions:
+**
+** 1. Deferred tokens are not taken into account. If a phrase consists
+** entirely of deferred tokens, it is assumed to match every row in
+** the db. In this case the position-list is not populated at all.
+**
+** Or, if a phrase contains one or more deferred tokens and one or
+** more non-deferred tokens, then the expression is advanced to the
+** next possible match, considering only non-deferred tokens. In other
+** words, if the phrase is "A B C", and "B" is deferred, the expression
+** is advanced to the next row that contains an instance of "A * C",
+** where "*" may match any single token. The position list in this case
+** is populated as for "A * C" before returning.
+**
+** 2. NEAR is treated as AND. If the expression is "x NEAR y", it is
+** advanced to point to the next row that matches "x AND y".
+**
+** See fts3EvalTestDeferredAndNear() for details on testing if a row is
+** really a match, taking into account deferred tokens and NEAR operators.
+*/
+static void fts3EvalNextRow(
+ Fts3Cursor *pCsr, /* FTS Cursor handle */
+ Fts3Expr *pExpr, /* Expr. to advance to next matching row */
+ int *pRc /* IN/OUT: Error code */
+){
+ if( *pRc==SQLITE_OK ){
+ int bDescDoclist = pCsr->bDesc; /* Used by DOCID_CMP() macro */
+ assert( pExpr->bEof==0 );
+ pExpr->bStart = 1;
+
+ switch( pExpr->eType ){
+ case FTSQUERY_NEAR:
+ case FTSQUERY_AND: {
+ Fts3Expr *pLeft = pExpr->pLeft;
+ Fts3Expr *pRight = pExpr->pRight;
+ assert( !pLeft->bDeferred || !pRight->bDeferred );
+
+ if( pLeft->bDeferred ){
+ /* LHS is entirely deferred. So we assume it matches every row.
+ ** Advance the RHS iterator to find the next row visited. */
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ pExpr->iDocid = pRight->iDocid;
+ pExpr->bEof = pRight->bEof;
+ }else if( pRight->bDeferred ){
+ /* RHS is entirely deferred. So we assume it matches every row.
+ ** Advance the LHS iterator to find the next row visited. */
+ fts3EvalNextRow(pCsr, pLeft, pRc);
+ pExpr->iDocid = pLeft->iDocid;
+ pExpr->bEof = pLeft->bEof;
+ }else{
+ /* Neither the RHS or LHS are deferred. */
+ fts3EvalNextRow(pCsr, pLeft, pRc);
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ while( !pLeft->bEof && !pRight->bEof && *pRc==SQLITE_OK ){
+ sqlite3_int64 iDiff = DOCID_CMP(pLeft->iDocid, pRight->iDocid);
+ if( iDiff==0 ) break;
+ if( iDiff<0 ){
+ fts3EvalNextRow(pCsr, pLeft, pRc);
+ }else{
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ }
+ }
+ pExpr->iDocid = pLeft->iDocid;
+ pExpr->bEof = (pLeft->bEof || pRight->bEof);
+ }
+ break;
+ }
+
+ case FTSQUERY_OR: {
+ Fts3Expr *pLeft = pExpr->pLeft;
+ Fts3Expr *pRight = pExpr->pRight;
+ sqlite3_int64 iCmp = DOCID_CMP(pLeft->iDocid, pRight->iDocid);
+
+ assert( pLeft->bStart || pLeft->iDocid==pRight->iDocid );
+ assert( pRight->bStart || pLeft->iDocid==pRight->iDocid );
+
+ if( pRight->bEof || (pLeft->bEof==0 && iCmp<0) ){
+ fts3EvalNextRow(pCsr, pLeft, pRc);
+ }else if( pLeft->bEof || (pRight->bEof==0 && iCmp>0) ){
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ }else{
+ fts3EvalNextRow(pCsr, pLeft, pRc);
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ }
+
+ pExpr->bEof = (pLeft->bEof && pRight->bEof);
+ iCmp = DOCID_CMP(pLeft->iDocid, pRight->iDocid);
+ if( pRight->bEof || (pLeft->bEof==0 && iCmp<0) ){
+ pExpr->iDocid = pLeft->iDocid;
+ }else{
+ pExpr->iDocid = pRight->iDocid;
+ }
+
+ break;
+ }
+
+ case FTSQUERY_NOT: {
+ Fts3Expr *pLeft = pExpr->pLeft;
+ Fts3Expr *pRight = pExpr->pRight;
+
+ if( pRight->bStart==0 ){
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ assert( *pRc!=SQLITE_OK || pRight->bStart );
+ }
+
+ fts3EvalNextRow(pCsr, pLeft, pRc);
+ if( pLeft->bEof==0 ){
+ while( !*pRc
+ && !pRight->bEof
+ && DOCID_CMP(pLeft->iDocid, pRight->iDocid)>0
+ ){
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ }
+ }
+ pExpr->iDocid = pLeft->iDocid;
+ pExpr->bEof = pLeft->bEof;
+ break;
+ }
+
+ default: {
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
+ fts3EvalInvalidatePoslist(pPhrase);
+ *pRc = fts3EvalPhraseNext(pCsr, pPhrase, &pExpr->bEof);
+ pExpr->iDocid = pPhrase->doclist.iDocid;
+ break;
+ }
+ }
+ }
+}
+
+/*
+** If *pRc is not SQLITE_OK, or if pExpr is not the root node of a NEAR
+** cluster, then this function returns 1 immediately.
+**
+** Otherwise, it checks if the current row really does match the NEAR
+** expression, using the data currently stored in the position lists
+** (Fts3Expr->pPhrase.doclist.pList/nList) for each phrase in the expression.
+**
+** If the current row is a match, the position list associated with each
+** phrase in the NEAR expression is edited in place to contain only those
+** phrase instances sufficiently close to their peers to satisfy all NEAR
+** constraints. In this case it returns 1. If the NEAR expression does not
+** match the current row, 0 is returned. The position lists may or may not
+** be edited if 0 is returned.
+*/
+static int fts3EvalNearTest(Fts3Expr *pExpr, int *pRc){
+ int res = 1;
+
+ /* The following block runs if pExpr is the root of a NEAR query.
+ ** For example, the query:
+ **
+ ** "w" NEAR "x" NEAR "y" NEAR "z"
+ **
+ ** which is represented in tree form as:
+ **
+ ** |
+ ** +--NEAR--+ <-- root of NEAR query
+ ** | |
+ ** +--NEAR--+ "z"
+ ** | |
+ ** +--NEAR--+ "y"
+ ** | |
+ ** "w" "x"
+ **
+ ** The right-hand child of a NEAR node is always a phrase. The
+ ** left-hand child may be either a phrase or a NEAR node. There are
+ ** no exceptions to this - it's the way the parser in fts3_expr.c works.
+ */
+ if( *pRc==SQLITE_OK
+ && pExpr->eType==FTSQUERY_NEAR
+ && pExpr->bEof==0
+ && (pExpr->pParent==0 || pExpr->pParent->eType!=FTSQUERY_NEAR)
+ ){
+ Fts3Expr *p;
+ int nTmp = 0; /* Bytes of temp space */
+ char *aTmp; /* Temp space for PoslistNearMerge() */
+
+ /* Allocate temporary working space. */
+ for(p=pExpr; p->pLeft; p=p->pLeft){
+ nTmp += p->pRight->pPhrase->doclist.nList;
+ }
+ nTmp += p->pPhrase->doclist.nList;
+ aTmp = sqlite3_malloc(nTmp*2);
+ if( !aTmp ){
+ *pRc = SQLITE_NOMEM;
+ res = 0;
+ }else{
+ char *aPoslist = p->pPhrase->doclist.pList;
+ int nToken = p->pPhrase->nToken;
+
+ for(p=p->pParent;res && p && p->eType==FTSQUERY_NEAR; p=p->pParent){
+ Fts3Phrase *pPhrase = p->pRight->pPhrase;
+ int nNear = p->nNear;
+ res = fts3EvalNearTrim(nNear, aTmp, &aPoslist, &nToken, pPhrase);
+ }
+
+ aPoslist = pExpr->pRight->pPhrase->doclist.pList;
+ nToken = pExpr->pRight->pPhrase->nToken;
+ for(p=pExpr->pLeft; p && res; p=p->pLeft){
+ int nNear;
+ Fts3Phrase *pPhrase;
+ assert( p->pParent && p->pParent->pLeft==p );
+ nNear = p->pParent->nNear;
+ pPhrase = (
+ p->eType==FTSQUERY_NEAR ? p->pRight->pPhrase : p->pPhrase
+ );
+ res = fts3EvalNearTrim(nNear, aTmp, &aPoslist, &nToken, pPhrase);
+ }
+ }
+
+ sqlite3_free(aTmp);
+ }
+
+ return res;
+}
+
+/*
+** This function is a helper function for fts3EvalTestDeferredAndNear().
+** Assuming no error occurs or has occurred, It returns non-zero if the
+** expression passed as the second argument matches the row that pCsr
+** currently points to, or zero if it does not.
+**
+** If *pRc is not SQLITE_OK when this function is called, it is a no-op.
+** If an error occurs during execution of this function, *pRc is set to
+** the appropriate SQLite error code. In this case the returned value is
+** undefined.
+*/
+static int fts3EvalTestExpr(
+ Fts3Cursor *pCsr, /* FTS cursor handle */
+ Fts3Expr *pExpr, /* Expr to test. May or may not be root. */
+ int *pRc /* IN/OUT: Error code */
+){
+ int bHit = 1; /* Return value */
+ if( *pRc==SQLITE_OK ){
+ switch( pExpr->eType ){
+ case FTSQUERY_NEAR:
+ case FTSQUERY_AND:
+ bHit = (
+ fts3EvalTestExpr(pCsr, pExpr->pLeft, pRc)
+ && fts3EvalTestExpr(pCsr, pExpr->pRight, pRc)
+ && fts3EvalNearTest(pExpr, pRc)
+ );
+
+ /* If the NEAR expression does not match any rows, zero the doclist for
+ ** all phrases involved in the NEAR. This is because the snippet(),
+ ** offsets() and matchinfo() functions are not supposed to recognize
+ ** any instances of phrases that are part of unmatched NEAR queries.
+ ** For example if this expression:
+ **
+ ** ... MATCH 'a OR (b NEAR c)'
+ **
+ ** is matched against a row containing:
+ **
+ ** 'a b d e'
+ **
+ ** then any snippet() should ony highlight the "a" term, not the "b"
+ ** (as "b" is part of a non-matching NEAR clause).
+ */
+ if( bHit==0
+ && pExpr->eType==FTSQUERY_NEAR
+ && (pExpr->pParent==0 || pExpr->pParent->eType!=FTSQUERY_NEAR)
+ ){
+ Fts3Expr *p;
+ for(p=pExpr; p->pPhrase==0; p=p->pLeft){
+ if( p->pRight->iDocid==pCsr->iPrevId ){
+ fts3EvalInvalidatePoslist(p->pRight->pPhrase);
+ }
+ }
+ if( p->iDocid==pCsr->iPrevId ){
+ fts3EvalInvalidatePoslist(p->pPhrase);
+ }
+ }
+
+ break;
+
+ case FTSQUERY_OR: {
+ int bHit1 = fts3EvalTestExpr(pCsr, pExpr->pLeft, pRc);
+ int bHit2 = fts3EvalTestExpr(pCsr, pExpr->pRight, pRc);
+ bHit = bHit1 || bHit2;
+ break;
+ }
+
+ case FTSQUERY_NOT:
+ bHit = (
+ fts3EvalTestExpr(pCsr, pExpr->pLeft, pRc)
+ && !fts3EvalTestExpr(pCsr, pExpr->pRight, pRc)
+ );
+ break;
+
+ default: {
+ if( pCsr->pDeferred
+ && (pExpr->iDocid==pCsr->iPrevId || pExpr->bDeferred)
+ ){
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
+ assert( pExpr->bDeferred || pPhrase->doclist.bFreeList==0 );
+ if( pExpr->bDeferred ){
+ fts3EvalInvalidatePoslist(pPhrase);
+ }
+ *pRc = fts3EvalDeferredPhrase(pCsr, pPhrase);
+ bHit = (pPhrase->doclist.pList!=0);
+ pExpr->iDocid = pCsr->iPrevId;
+ }else{
+ bHit = (pExpr->bEof==0 && pExpr->iDocid==pCsr->iPrevId);
+ }
+ break;
+ }
+ }
+ }
+ return bHit;
+}
+
+/*
+** This function is called as the second part of each xNext operation when
+** iterating through the results of a full-text query. At this point the
+** cursor points to a row that matches the query expression, with the
+** following caveats:
+**
+** * Up until this point, "NEAR" operators in the expression have been
+** treated as "AND".
+**
+** * Deferred tokens have not yet been considered.
+**
+** If *pRc is not SQLITE_OK when this function is called, it immediately
+** returns 0. Otherwise, it tests whether or not after considering NEAR
+** operators and deferred tokens the current row is still a match for the
+** expression. It returns 1 if both of the following are true:
+**
+** 1. *pRc is SQLITE_OK when this function returns, and
+**
+** 2. After scanning the current FTS table row for the deferred tokens,
+** it is determined that the row does *not* match the query.
+**
+** Or, if no error occurs and it seems the current row does match the FTS
+** query, return 0.
+*/
+static int fts3EvalTestDeferredAndNear(Fts3Cursor *pCsr, int *pRc){
+ int rc = *pRc;
+ int bMiss = 0;
+ if( rc==SQLITE_OK ){
+
+ /* If there are one or more deferred tokens, load the current row into
+ ** memory and scan it to determine the position list for each deferred
+ ** token. Then, see if this row is really a match, considering deferred
+ ** tokens and NEAR operators (neither of which were taken into account
+ ** earlier, by fts3EvalNextRow()).
+ */
+ if( pCsr->pDeferred ){
+ rc = fts3CursorSeek(0, pCsr);
+ if( rc==SQLITE_OK ){
+ rc = sqlite3Fts3CacheDeferredDoclists(pCsr);
+ }
+ }
+ bMiss = (0==fts3EvalTestExpr(pCsr, pCsr->pExpr, &rc));
+
+ /* Free the position-lists accumulated for each deferred token above. */
+ sqlite3Fts3FreeDeferredDoclists(pCsr);
+ *pRc = rc;
+ }
+ return (rc==SQLITE_OK && bMiss);
+}
+
+/*
+** Advance to the next document that matches the FTS expression in
+** Fts3Cursor.pExpr.
+*/
+static int fts3EvalNext(Fts3Cursor *pCsr){
+ int rc = SQLITE_OK; /* Return Code */
+ Fts3Expr *pExpr = pCsr->pExpr;
+ assert( pCsr->isEof==0 );
+ if( pExpr==0 ){
+ pCsr->isEof = 1;
+ }else{
+ do {
+ if( pCsr->isRequireSeek==0 ){
+ sqlite3_reset(pCsr->pStmt);
+ }
+ assert( sqlite3_data_count(pCsr->pStmt)==0 );
+ fts3EvalNextRow(pCsr, pExpr, &rc);
+ pCsr->isEof = pExpr->bEof;
+ pCsr->isRequireSeek = 1;
+ pCsr->isMatchinfoNeeded = 1;
+ pCsr->iPrevId = pExpr->iDocid;
+ }while( pCsr->isEof==0 && fts3EvalTestDeferredAndNear(pCsr, &rc) );
+ }
+ return rc;
+}
+
+/*
+** Restart interation for expression pExpr so that the next call to
+** fts3EvalNext() visits the first row. Do not allow incremental
+** loading or merging of phrase doclists for this iteration.
+**
+** If *pRc is other than SQLITE_OK when this function is called, it is
+** a no-op. If an error occurs within this function, *pRc is set to an
+** SQLite error code before returning.
+*/
+static void fts3EvalRestart(
+ Fts3Cursor *pCsr,
+ Fts3Expr *pExpr,
+ int *pRc
+){
+ if( pExpr && *pRc==SQLITE_OK ){
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
+
+ if( pPhrase ){
+ fts3EvalInvalidatePoslist(pPhrase);
+ if( pPhrase->bIncr ){
+ assert( pPhrase->nToken==1 );
+ assert( pPhrase->aToken[0].pSegcsr );
+ sqlite3Fts3MsrIncrRestart(pPhrase->aToken[0].pSegcsr);
+ *pRc = fts3EvalPhraseStart(pCsr, 0, pPhrase);
+ }
+
+ pPhrase->doclist.pNextDocid = 0;
+ pPhrase->doclist.iDocid = 0;
+ }
+
+ pExpr->iDocid = 0;
+ pExpr->bEof = 0;
+ pExpr->bStart = 0;
+
+ fts3EvalRestart(pCsr, pExpr->pLeft, pRc);
+ fts3EvalRestart(pCsr, pExpr->pRight, pRc);
+ }
+}
+
+/*
+** After allocating the Fts3Expr.aMI[] array for each phrase in the
+** expression rooted at pExpr, the cursor iterates through all rows matched
+** by pExpr, calling this function for each row. This function increments
+** the values in Fts3Expr.aMI[] according to the position-list currently
+** found in Fts3Expr.pPhrase->doclist.pList for each of the phrase
+** expression nodes.
+*/
+static void fts3EvalUpdateCounts(Fts3Expr *pExpr){
+ if( pExpr ){
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
+ if( pPhrase && pPhrase->doclist.pList ){
+ int iCol = 0;
+ char *p = pPhrase->doclist.pList;
+
+ assert( *p );
+ while( 1 ){
+ u8 c = 0;
+ int iCnt = 0;
+ while( 0xFE & (*p | c) ){
+ if( (c&0x80)==0 ) iCnt++;
+ c = *p++ & 0x80;
+ }
+
+ /* aMI[iCol*3 + 1] = Number of occurrences
+ ** aMI[iCol*3 + 2] = Number of rows containing at least one instance
+ */
+ pExpr->aMI[iCol*3 + 1] += iCnt;
+ pExpr->aMI[iCol*3 + 2] += (iCnt>0);
+ if( *p==0x00 ) break;
+ p++;
+ p += sqlite3Fts3GetVarint32(p, &iCol);
+ }
+ }
+
+ fts3EvalUpdateCounts(pExpr->pLeft);
+ fts3EvalUpdateCounts(pExpr->pRight);
+ }
+}
+
+/*
+** Expression pExpr must be of type FTSQUERY_PHRASE.
+**
+** If it is not already allocated and populated, this function allocates and
+** populates the Fts3Expr.aMI[] array for expression pExpr. If pExpr is part
+** of a NEAR expression, then it also allocates and populates the same array
+** for all other phrases that are part of the NEAR expression.
+**
+** SQLITE_OK is returned if the aMI[] array is successfully allocated and
+** populated. Otherwise, if an error occurs, an SQLite error code is returned.
+*/
+static int fts3EvalGatherStats(
+ Fts3Cursor *pCsr, /* Cursor object */
+ Fts3Expr *pExpr /* FTSQUERY_PHRASE expression */
+){
+ int rc = SQLITE_OK; /* Return code */
+
+ assert( pExpr->eType==FTSQUERY_PHRASE );
+ if( pExpr->aMI==0 ){
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+ Fts3Expr *pRoot; /* Root of NEAR expression */
+ Fts3Expr *p; /* Iterator used for several purposes */
+
+ sqlite3_int64 iPrevId = pCsr->iPrevId;
+ sqlite3_int64 iDocid;
+ u8 bEof;
+
+ /* Find the root of the NEAR expression */
+ pRoot = pExpr;
+ while( pRoot->pParent && pRoot->pParent->eType==FTSQUERY_NEAR ){
+ pRoot = pRoot->pParent;
+ }
+ iDocid = pRoot->iDocid;
+ bEof = pRoot->bEof;
+ assert( pRoot->bStart );
+
+ /* Allocate space for the aMSI[] array of each FTSQUERY_PHRASE node */
+ for(p=pRoot; p; p=p->pLeft){
+ Fts3Expr *pE = (p->eType==FTSQUERY_PHRASE?p:p->pRight);
+ assert( pE->aMI==0 );
+ pE->aMI = (u32 *)sqlite3_malloc(pTab->nColumn * 3 * sizeof(u32));
+ if( !pE->aMI ) return SQLITE_NOMEM;
+ memset(pE->aMI, 0, pTab->nColumn * 3 * sizeof(u32));
+ }
+
+ fts3EvalRestart(pCsr, pRoot, &rc);
+
+ while( pCsr->isEof==0 && rc==SQLITE_OK ){
+
+ do {
+ /* Ensure the %_content statement is reset. */
+ if( pCsr->isRequireSeek==0 ) sqlite3_reset(pCsr->pStmt);
+ assert( sqlite3_data_count(pCsr->pStmt)==0 );
+
+ /* Advance to the next document */
+ fts3EvalNextRow(pCsr, pRoot, &rc);
+ pCsr->isEof = pRoot->bEof;
+ pCsr->isRequireSeek = 1;
+ pCsr->isMatchinfoNeeded = 1;
+ pCsr->iPrevId = pRoot->iDocid;
+ }while( pCsr->isEof==0
+ && pRoot->eType==FTSQUERY_NEAR
+ && fts3EvalTestDeferredAndNear(pCsr, &rc)
+ );
+
+ if( rc==SQLITE_OK && pCsr->isEof==0 ){
+ fts3EvalUpdateCounts(pRoot);
+ }
+ }
+
+ pCsr->isEof = 0;
+ pCsr->iPrevId = iPrevId;
+
+ if( bEof ){
+ pRoot->bEof = bEof;
+ }else{
+ /* Caution: pRoot may iterate through docids in ascending or descending
+ ** order. For this reason, even though it seems more defensive, the
+ ** do loop can not be written:
+ **
+ ** do {...} while( pRoot->iDocid<iDocid && rc==SQLITE_OK );
+ */
+ fts3EvalRestart(pCsr, pRoot, &rc);
+ do {
+ fts3EvalNextRow(pCsr, pRoot, &rc);
+ assert( pRoot->bEof==0 );
+ }while( pRoot->iDocid!=iDocid && rc==SQLITE_OK );
+ fts3EvalTestDeferredAndNear(pCsr, &rc);
+ }
+ }
+ return rc;
+}
+
+/*
+** This function is used by the matchinfo() module to query a phrase
+** expression node for the following information:
+**
+** 1. The total number of occurrences of the phrase in each column of
+** the FTS table (considering all rows), and
+**
+** 2. For each column, the number of rows in the table for which the
+** column contains at least one instance of the phrase.
+**
+** If no error occurs, SQLITE_OK is returned and the values for each column
+** written into the array aiOut as follows:
+**
+** aiOut[iCol*3 + 1] = Number of occurrences
+** aiOut[iCol*3 + 2] = Number of rows containing at least one instance
+**
+** Caveats:
+**
+** * If a phrase consists entirely of deferred tokens, then all output
+** values are set to the number of documents in the table. In other
+** words we assume that very common tokens occur exactly once in each
+** column of each row of the table.
+**
+** * If a phrase contains some deferred tokens (and some non-deferred
+** tokens), count the potential occurrence identified by considering
+** the non-deferred tokens instead of actual phrase occurrences.
+**
+** * If the phrase is part of a NEAR expression, then only phrase instances
+** that meet the NEAR constraint are included in the counts.
+*/
+SQLITE_PRIVATE int sqlite3Fts3EvalPhraseStats(
+ Fts3Cursor *pCsr, /* FTS cursor handle */
+ Fts3Expr *pExpr, /* Phrase expression */
+ u32 *aiOut /* Array to write results into (see above) */
+){
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+ int rc = SQLITE_OK;
+ int iCol;
+
+ if( pExpr->bDeferred && pExpr->pParent->eType!=FTSQUERY_NEAR ){
+ assert( pCsr->nDoc>0 );
+ for(iCol=0; iCol<pTab->nColumn; iCol++){
+ aiOut[iCol*3 + 1] = (u32)pCsr->nDoc;
+ aiOut[iCol*3 + 2] = (u32)pCsr->nDoc;
+ }
+ }else{
+ rc = fts3EvalGatherStats(pCsr, pExpr);
+ if( rc==SQLITE_OK ){
+ assert( pExpr->aMI );
+ for(iCol=0; iCol<pTab->nColumn; iCol++){
+ aiOut[iCol*3 + 1] = pExpr->aMI[iCol*3 + 1];
+ aiOut[iCol*3 + 2] = pExpr->aMI[iCol*3 + 2];
+ }
+ }
+ }
+
+ return rc;
+}
+
+/*
+** The expression pExpr passed as the second argument to this function
+** must be of type FTSQUERY_PHRASE.
+**
+** The returned value is either NULL or a pointer to a buffer containing
+** a position-list indicating the occurrences of the phrase in column iCol
+** of the current row.
+**
+** More specifically, the returned buffer contains 1 varint for each
+** occurence of the phrase in the column, stored using the normal (delta+2)
+** compression and is terminated by either an 0x01 or 0x00 byte. For example,
+** if the requested column contains "a b X c d X X" and the position-list
+** for 'X' is requested, the buffer returned may contain:
+**
+** 0x04 0x05 0x03 0x01 or 0x04 0x05 0x03 0x00
+**
+** This function works regardless of whether or not the phrase is deferred,
+** incremental, or neither.
+*/
+SQLITE_PRIVATE char *sqlite3Fts3EvalPhrasePoslist(
+ Fts3Cursor *pCsr, /* FTS3 cursor object */
+ Fts3Expr *pExpr, /* Phrase to return doclist for */
+ int iCol /* Column to return position list for */
+){
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+ char *pIter = pPhrase->doclist.pList;
+ int iThis;
+
+ assert( iCol>=0 && iCol<pTab->nColumn );
+ if( !pIter
+ || pExpr->bEof
+ || pExpr->iDocid!=pCsr->iPrevId
+ || (pPhrase->iColumn<pTab->nColumn && pPhrase->iColumn!=iCol)
+ ){
+ return 0;
+ }
+
+ assert( pPhrase->doclist.nList>0 );
+ if( *pIter==0x01 ){
+ pIter++;
+ pIter += sqlite3Fts3GetVarint32(pIter, &iThis);
+ }else{
+ iThis = 0;
+ }
+ while( iThis<iCol ){
+ fts3ColumnlistCopy(0, &pIter);
+ if( *pIter==0x00 ) return 0;
+ pIter++;
+ pIter += sqlite3Fts3GetVarint32(pIter, &iThis);
+ }
+
+ return ((iCol==iThis)?pIter:0);
+}
+
+/*
+** Free all components of the Fts3Phrase structure that were allocated by
+** the eval module. Specifically, this means to free:
+**
+** * the contents of pPhrase->doclist, and
+** * any Fts3MultiSegReader objects held by phrase tokens.
+*/
+SQLITE_PRIVATE void sqlite3Fts3EvalPhraseCleanup(Fts3Phrase *pPhrase){
+ if( pPhrase ){
+ int i;
+ sqlite3_free(pPhrase->doclist.aAll);
+ fts3EvalInvalidatePoslist(pPhrase);
+ memset(&pPhrase->doclist, 0, sizeof(Fts3Doclist));
+ for(i=0; i<pPhrase->nToken; i++){
+ fts3SegReaderCursorFree(pPhrase->aToken[i].pSegcsr);
+ pPhrase->aToken[i].pSegcsr = 0;
+ }
+ }
+}
+
+/*
+** Return SQLITE_CORRUPT_VTAB.
+*/
+#ifdef SQLITE_DEBUG
+SQLITE_PRIVATE int sqlite3Fts3Corrupt(){
+ return SQLITE_CORRUPT_VTAB;
+}
+#endif
+
#if !SQLITE_CORE
+/*
+** Initialize API pointer table, if required.
+*/
SQLITE_API int sqlite3_extension_init(
sqlite3 *db,
char **pzErrMsg,
@@ -111905,6 +121474,482 @@
#endif
/************** End of fts3.c ************************************************/
+/************** Begin file fts3_aux.c ****************************************/
+/*
+** 2011 Jan 27
+**
+** The author disclaims copyright to this source code. In place of
+** a legal notice, here is a blessing:
+**
+** May you do good and not evil.
+** May you find forgiveness for yourself and forgive others.
+** May you share freely, never taking more than you give.
+**
+******************************************************************************
+**
+*/
+#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
+
+/* #include <string.h> */
+/* #include <assert.h> */
+
+typedef struct Fts3auxTable Fts3auxTable;
+typedef struct Fts3auxCursor Fts3auxCursor;
+
+struct Fts3auxTable {
+ sqlite3_vtab base; /* Base class used by SQLite core */
+ Fts3Table *pFts3Tab;
+};
+
+struct Fts3auxCursor {
+ sqlite3_vtab_cursor base; /* Base class used by SQLite core */
+ Fts3MultiSegReader csr; /* Must be right after "base" */
+ Fts3SegFilter filter;
+ char *zStop;
+ int nStop; /* Byte-length of string zStop */
+ int isEof; /* True if cursor is at EOF */
+ sqlite3_int64 iRowid; /* Current rowid */
+
+ int iCol; /* Current value of 'col' column */
+ int nStat; /* Size of aStat[] array */
+ struct Fts3auxColstats {
+ sqlite3_int64 nDoc; /* 'documents' values for current csr row */
+ sqlite3_int64 nOcc; /* 'occurrences' values for current csr row */
+ } *aStat;
+};
+
+/*
+** Schema of the terms table.
+*/
+#define FTS3_TERMS_SCHEMA "CREATE TABLE x(term, col, documents, occurrences)"
+
+/*
+** This function does all the work for both the xConnect and xCreate methods.
+** These tables have no persistent representation of their own, so xConnect
+** and xCreate are identical operations.
+*/
+static int fts3auxConnectMethod(
+ sqlite3 *db, /* Database connection */
+ void *pUnused, /* Unused */
+ int argc, /* Number of elements in argv array */
+ const char * const *argv, /* xCreate/xConnect argument array */
+ sqlite3_vtab **ppVtab, /* OUT: New sqlite3_vtab object */
+ char **pzErr /* OUT: sqlite3_malloc'd error message */
+){
+ char const *zDb; /* Name of database (e.g. "main") */
+ char const *zFts3; /* Name of fts3 table */
+ int nDb; /* Result of strlen(zDb) */
+ int nFts3; /* Result of strlen(zFts3) */
+ int nByte; /* Bytes of space to allocate here */
+ int rc; /* value returned by declare_vtab() */
+ Fts3auxTable *p; /* Virtual table object to return */
+
+ UNUSED_PARAMETER(pUnused);
+
+ /* The user should specify a single argument - the name of an fts3 table. */
+ if( argc!=4 ){
+ *pzErr = sqlite3_mprintf(
+ "wrong number of arguments to fts4aux constructor"
+ );
+ return SQLITE_ERROR;
+ }
+
+ zDb = argv[1];
+ nDb = strlen(zDb);
+ zFts3 = argv[3];
+ nFts3 = strlen(zFts3);
+
+ rc = sqlite3_declare_vtab(db, FTS3_TERMS_SCHEMA);
+ if( rc!=SQLITE_OK ) return rc;
+
+ nByte = sizeof(Fts3auxTable) + sizeof(Fts3Table) + nDb + nFts3 + 2;
+ p = (Fts3auxTable *)sqlite3_malloc(nByte);
+ if( !p ) return SQLITE_NOMEM;
+ memset(p, 0, nByte);
+
+ p->pFts3Tab = (Fts3Table *)&p[1];
+ p->pFts3Tab->zDb = (char *)&p->pFts3Tab[1];
+ p->pFts3Tab->zName = &p->pFts3Tab->zDb[nDb+1];
+ p->pFts3Tab->db = db;
+ p->pFts3Tab->nIndex = 1;
+
+ memcpy((char *)p->pFts3Tab->zDb, zDb, nDb);
+ memcpy((char *)p->pFts3Tab->zName, zFts3, nFts3);
+ sqlite3Fts3Dequote((char *)p->pFts3Tab->zName);
+
+ *ppVtab = (sqlite3_vtab *)p;
+ return SQLITE_OK;
+}
+
+/*
+** This function does the work for both the xDisconnect and xDestroy methods.
+** These tables have no persistent representation of their own, so xDisconnect
+** and xDestroy are identical operations.
+*/
+static int fts3auxDisconnectMethod(sqlite3_vtab *pVtab){
+ Fts3auxTable *p = (Fts3auxTable *)pVtab;
+ Fts3Table *pFts3 = p->pFts3Tab;
+ int i;
+
+ /* Free any prepared statements held */
+ for(i=0; i<SizeofArray(pFts3->aStmt); i++){
+ sqlite3_finalize(pFts3->aStmt[i]);
+ }
+ sqlite3_free(pFts3->zSegmentsTbl);
+ sqlite3_free(p);
+ return SQLITE_OK;
+}
+
+#define FTS4AUX_EQ_CONSTRAINT 1
+#define FTS4AUX_GE_CONSTRAINT 2
+#define FTS4AUX_LE_CONSTRAINT 4
+
+/*
+** xBestIndex - Analyze a WHERE and ORDER BY clause.
+*/
+static int fts3auxBestIndexMethod(
+ sqlite3_vtab *pVTab,
+ sqlite3_index_info *pInfo
+){
+ int i;
+ int iEq = -1;
+ int iGe = -1;
+ int iLe = -1;
+
+ UNUSED_PARAMETER(pVTab);
+
+ /* This vtab delivers always results in "ORDER BY term ASC" order. */
+ if( pInfo->nOrderBy==1
+ && pInfo->aOrderBy[0].iColumn==0
+ && pInfo->aOrderBy[0].desc==0
+ ){
+ pInfo->orderByConsumed = 1;
+ }
+
+ /* Search for equality and range constraints on the "term" column. */
+ for(i=0; i<pInfo->nConstraint; i++){
+ if( pInfo->aConstraint[i].usable && pInfo->aConstraint[i].iColumn==0 ){
+ int op = pInfo->aConstraint[i].op;
+ if( op==SQLITE_INDEX_CONSTRAINT_EQ ) iEq = i;
+ if( op==SQLITE_INDEX_CONSTRAINT_LT ) iLe = i;
+ if( op==SQLITE_INDEX_CONSTRAINT_LE ) iLe = i;
+ if( op==SQLITE_INDEX_CONSTRAINT_GT ) iGe = i;
+ if( op==SQLITE_INDEX_CONSTRAINT_GE ) iGe = i;
+ }
+ }
+
+ if( iEq>=0 ){
+ pInfo->idxNum = FTS4AUX_EQ_CONSTRAINT;
+ pInfo->aConstraintUsage[iEq].argvIndex = 1;
+ pInfo->estimatedCost = 5;
+ }else{
+ pInfo->idxNum = 0;
+ pInfo->estimatedCost = 20000;
+ if( iGe>=0 ){
+ pInfo->idxNum += FTS4AUX_GE_CONSTRAINT;
+ pInfo->aConstraintUsage[iGe].argvIndex = 1;
+ pInfo->estimatedCost /= 2;
+ }
+ if( iLe>=0 ){
+ pInfo->idxNum += FTS4AUX_LE_CONSTRAINT;
+ pInfo->aConstraintUsage[iLe].argvIndex = 1 + (iGe>=0);
+ pInfo->estimatedCost /= 2;
+ }
+ }
+
+ return SQLITE_OK;
+}
+
+/*
+** xOpen - Open a cursor.
+*/
+static int fts3auxOpenMethod(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCsr){
+ Fts3auxCursor *pCsr; /* Pointer to cursor object to return */
+
+ UNUSED_PARAMETER(pVTab);
+
+ pCsr = (Fts3auxCursor *)sqlite3_malloc(sizeof(Fts3auxCursor));
+ if( !pCsr ) return SQLITE_NOMEM;
+ memset(pCsr, 0, sizeof(Fts3auxCursor));
+
+ *ppCsr = (sqlite3_vtab_cursor *)pCsr;
+ return SQLITE_OK;
+}
+
+/*
+** xClose - Close a cursor.
+*/
+static int fts3auxCloseMethod(sqlite3_vtab_cursor *pCursor){
+ Fts3Table *pFts3 = ((Fts3auxTable *)pCursor->pVtab)->pFts3Tab;
+ Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor;
+
+ sqlite3Fts3SegmentsClose(pFts3);
+ sqlite3Fts3SegReaderFinish(&pCsr->csr);
+ sqlite3_free((void *)pCsr->filter.zTerm);
+ sqlite3_free(pCsr->zStop);
+ sqlite3_free(pCsr->aStat);
+ sqlite3_free(pCsr);
+ return SQLITE_OK;
+}
+
+static int fts3auxGrowStatArray(Fts3auxCursor *pCsr, int nSize){
+ if( nSize>pCsr->nStat ){
+ struct Fts3auxColstats *aNew;
+ aNew = (struct Fts3auxColstats *)sqlite3_realloc(pCsr->aStat,
+ sizeof(struct Fts3auxColstats) * nSize
+ );
+ if( aNew==0 ) return SQLITE_NOMEM;
+ memset(&aNew[pCsr->nStat], 0,
+ sizeof(struct Fts3auxColstats) * (nSize - pCsr->nStat)
+ );
+ pCsr->aStat = aNew;
+ pCsr->nStat = nSize;
+ }
+ return SQLITE_OK;
+}
+
+/*
+** xNext - Advance the cursor to the next row, if any.
+*/
+static int fts3auxNextMethod(sqlite3_vtab_cursor *pCursor){
+ Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor;
+ Fts3Table *pFts3 = ((Fts3auxTable *)pCursor->pVtab)->pFts3Tab;
+ int rc;
+
+ /* Increment our pretend rowid value. */
+ pCsr->iRowid++;
+
+ for(pCsr->iCol++; pCsr->iCol<pCsr->nStat; pCsr->iCol++){
+ if( pCsr->aStat[pCsr->iCol].nDoc>0 ) return SQLITE_OK;
+ }
+
+ rc = sqlite3Fts3SegReaderStep(pFts3, &pCsr->csr);
+ if( rc==SQLITE_ROW ){
+ int i = 0;
+ int nDoclist = pCsr->csr.nDoclist;
+ char *aDoclist = pCsr->csr.aDoclist;
+ int iCol;
+
+ int eState = 0;
+
+ if( pCsr->zStop ){
+ int n = (pCsr->nStop<pCsr->csr.nTerm) ? pCsr->nStop : pCsr->csr.nTerm;
+ int mc = memcmp(pCsr->zStop, pCsr->csr.zTerm, n);
+ if( mc<0 || (mc==0 && pCsr->csr.nTerm>pCsr->nStop) ){
+ pCsr->isEof = 1;
+ return SQLITE_OK;
+ }
+ }
+
+ if( fts3auxGrowStatArray(pCsr, 2) ) return SQLITE_NOMEM;
+ memset(pCsr->aStat, 0, sizeof(struct Fts3auxColstats) * pCsr->nStat);
+ iCol = 0;
+
+ while( i<nDoclist ){
+ sqlite3_int64 v = 0;
+
+ i += sqlite3Fts3GetVarint(&aDoclist[i], &v);
+ switch( eState ){
+ /* State 0. In this state the integer just read was a docid. */
+ case 0:
+ pCsr->aStat[0].nDoc++;
+ eState = 1;
+ iCol = 0;
+ break;
+
+ /* State 1. In this state we are expecting either a 1, indicating
+ ** that the following integer will be a column number, or the
+ ** start of a position list for column 0.
+ **
+ ** The only difference between state 1 and state 2 is that if the
+ ** integer encountered in state 1 is not 0 or 1, then we need to
+ ** increment the column 0 "nDoc" count for this term.
+ */
+ case 1:
+ assert( iCol==0 );
+ if( v>1 ){
+ pCsr->aStat[1].nDoc++;
+ }
+ eState = 2;
+ /* fall through */
+
+ case 2:
+ if( v==0 ){ /* 0x00. Next integer will be a docid. */
+ eState = 0;
+ }else if( v==1 ){ /* 0x01. Next integer will be a column number. */
+ eState = 3;
+ }else{ /* 2 or greater. A position. */
+ pCsr->aStat[iCol+1].nOcc++;
+ pCsr->aStat[0].nOcc++;
+ }
+ break;
+
+ /* State 3. The integer just read is a column number. */
+ default: assert( eState==3 );
+ iCol = (int)v;
+ if( fts3auxGrowStatArray(pCsr, iCol+2) ) return SQLITE_NOMEM;
+ pCsr->aStat[iCol+1].nDoc++;
+ eState = 2;
+ break;
+ }
+ }
+
+ pCsr->iCol = 0;
+ rc = SQLITE_OK;
+ }else{
+ pCsr->isEof = 1;
+ }
+ return rc;
+}
+
+/*
+** xFilter - Initialize a cursor to point at the start of its data.
+*/
+static int fts3auxFilterMethod(
+ sqlite3_vtab_cursor *pCursor, /* The cursor used for this query */
+ int idxNum, /* Strategy index */
+ const char *idxStr, /* Unused */
+ int nVal, /* Number of elements in apVal */
+ sqlite3_value **apVal /* Arguments for the indexing scheme */
+){
+ Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor;
+ Fts3Table *pFts3 = ((Fts3auxTable *)pCursor->pVtab)->pFts3Tab;
+ int rc;
+ int isScan;
+
+ UNUSED_PARAMETER(nVal);
+ UNUSED_PARAMETER(idxStr);
+
+ assert( idxStr==0 );
+ assert( idxNum==FTS4AUX_EQ_CONSTRAINT || idxNum==0
+ || idxNum==FTS4AUX_LE_CONSTRAINT || idxNum==FTS4AUX_GE_CONSTRAINT
+ || idxNum==(FTS4AUX_LE_CONSTRAINT|FTS4AUX_GE_CONSTRAINT)
+ );
+ isScan = (idxNum!=FTS4AUX_EQ_CONSTRAINT);
+
+ /* In case this cursor is being reused, close and zero it. */
+ testcase(pCsr->filter.zTerm);
+ sqlite3Fts3SegReaderFinish(&pCsr->csr);
+ sqlite3_free((void *)pCsr->filter.zTerm);
+ sqlite3_free(pCsr->aStat);
+ memset(&pCsr->csr, 0, ((u8*)&pCsr[1]) - (u8*)&pCsr->csr);
+
+ pCsr->filter.flags = FTS3_SEGMENT_REQUIRE_POS|FTS3_SEGMENT_IGNORE_EMPTY;
+ if( isScan ) pCsr->filter.flags |= FTS3_SEGMENT_SCAN;
+
+ if( idxNum&(FTS4AUX_EQ_CONSTRAINT|FTS4AUX_GE_CONSTRAINT) ){
+ const unsigned char *zStr = sqlite3_value_text(apVal[0]);
+ if( zStr ){
+ pCsr->filter.zTerm = sqlite3_mprintf("%s", zStr);
+ pCsr->filter.nTerm = sqlite3_value_bytes(apVal[0]);
+ if( pCsr->filter.zTerm==0 ) return SQLITE_NOMEM;
+ }
+ }
+ if( idxNum&FTS4AUX_LE_CONSTRAINT ){
+ int iIdx = (idxNum&FTS4AUX_GE_CONSTRAINT) ? 1 : 0;
+ pCsr->zStop = sqlite3_mprintf("%s", sqlite3_value_text(apVal[iIdx]));
+ pCsr->nStop = sqlite3_value_bytes(apVal[iIdx]);
+ if( pCsr->zStop==0 ) return SQLITE_NOMEM;
+ }
+
+ rc = sqlite3Fts3SegReaderCursor(pFts3, 0, FTS3_SEGCURSOR_ALL,
+ pCsr->filter.zTerm, pCsr->filter.nTerm, 0, isScan, &pCsr->csr
+ );
+ if( rc==SQLITE_OK ){
+ rc = sqlite3Fts3SegReaderStart(pFts3, &pCsr->csr, &pCsr->filter);
+ }
+
+ if( rc==SQLITE_OK ) rc = fts3auxNextMethod(pCursor);
+ return rc;
+}
+
+/*
+** xEof - Return true if the cursor is at EOF, or false otherwise.
+*/
+static int fts3auxEofMethod(sqlite3_vtab_cursor *pCursor){
+ Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor;
+ return pCsr->isEof;
+}
+
+/*
+** xColumn - Return a column value.
+*/
+static int fts3auxColumnMethod(
+ sqlite3_vtab_cursor *pCursor, /* Cursor to retrieve value from */
+ sqlite3_context *pContext, /* Context for sqlite3_result_xxx() calls */
+ int iCol /* Index of column to read value from */
+){
+ Fts3auxCursor *p = (Fts3auxCursor *)pCursor;
+
+ assert( p->isEof==0 );
+ if( iCol==0 ){ /* Column "term" */
+ sqlite3_result_text(pContext, p->csr.zTerm, p->csr.nTerm, SQLITE_TRANSIENT);
+ }else if( iCol==1 ){ /* Column "col" */
+ if( p->iCol ){
+ sqlite3_result_int(pContext, p->iCol-1);
+ }else{
+ sqlite3_result_text(pContext, "*", -1, SQLITE_STATIC);
+ }
+ }else if( iCol==2 ){ /* Column "documents" */
+ sqlite3_result_int64(pContext, p->aStat[p->iCol].nDoc);
+ }else{ /* Column "occurrences" */
+ sqlite3_result_int64(pContext, p->aStat[p->iCol].nOcc);
+ }
+
+ return SQLITE_OK;
+}
+
+/*
+** xRowid - Return the current rowid for the cursor.
+*/
+static int fts3auxRowidMethod(
+ sqlite3_vtab_cursor *pCursor, /* Cursor to retrieve value from */
+ sqlite_int64 *pRowid /* OUT: Rowid value */
+){
+ Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor;
+ *pRowid = pCsr->iRowid;
+ return SQLITE_OK;
+}
+
+/*
+** Register the fts3aux module with database connection db. Return SQLITE_OK
+** if successful or an error code if sqlite3_create_module() fails.
+*/
+SQLITE_PRIVATE int sqlite3Fts3InitAux(sqlite3 *db){
+ static const sqlite3_module fts3aux_module = {
+ 0, /* iVersion */
+ fts3auxConnectMethod, /* xCreate */
+ fts3auxConnectMethod, /* xConnect */
+ fts3auxBestIndexMethod, /* xBestIndex */
+ fts3auxDisconnectMethod, /* xDisconnect */
+ fts3auxDisconnectMethod, /* xDestroy */
+ fts3auxOpenMethod, /* xOpen */
+ fts3auxCloseMethod, /* xClose */
+ fts3auxFilterMethod, /* xFilter */
+ fts3auxNextMethod, /* xNext */
+ fts3auxEofMethod, /* xEof */
+ fts3auxColumnMethod, /* xColumn */
+ fts3auxRowidMethod, /* xRowid */
+ 0, /* xUpdate */
+ 0, /* xBegin */
+ 0, /* xSync */
+ 0, /* xCommit */
+ 0, /* xRollback */
+ 0, /* xFindFunction */
+ 0, /* xRename */
+ 0, /* xSavepoint */
+ 0, /* xRelease */
+ 0 /* xRollbackTo */
+ };
+ int rc; /* Return code */
+
+ rc = sqlite3_create_module(db, "fts4aux", &fts3aux_module, 0);
+ return rc;
+}
+
+#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */
+
+/************** End of fts3_aux.c ********************************************/
/************** Begin file fts3_expr.c ***************************************/
/*
** 2008 Nov 28
@@ -111985,13 +122030,25 @@
*/
#define SQLITE_FTS3_DEFAULT_NEAR_PARAM 10
+/* #include <string.h> */
+/* #include <assert.h> */
+/*
+** isNot:
+** This variable is used by function getNextNode(). When getNextNode() is
+** called, it sets ParseContext.isNot to true if the 'next node' is a
+** FTSQUERY_PHRASE with a unary "-" attached to it. i.e. "mysql" in the
+** FTS3 query "sqlite -mysql". Otherwise, ParseContext.isNot is set to
+** zero.
+*/
typedef struct ParseContext ParseContext;
struct ParseContext {
sqlite3_tokenizer *pTokenizer; /* Tokenizer module */
const char **azCol; /* Array of column names for fts3 table */
+ int bFts4; /* True to allow FTS4-only syntax */
int nCol; /* Number of entries in azCol[] */
int iDefaultCol; /* Default column to query */
+ int isNot; /* True if getNextNode() sees a unary - */
sqlite3_context *pCtx; /* Write error message here */
int nNest; /* Number of nested brackets */
};
@@ -112076,9 +122133,21 @@
pRet->pPhrase->aToken[0].isPrefix = 1;
iEnd++;
}
- if( !sqlite3_fts3_enable_parentheses && iStart>0 && z[iStart-1]=='-' ){
- pRet->pPhrase->isNot = 1;
+
+ while( 1 ){
+ if( !sqlite3_fts3_enable_parentheses
+ && iStart>0 && z[iStart-1]=='-'
+ ){
+ pParse->isNot = 1;
+ iStart--;
+ }else if( pParse->bFts4 && iStart>0 && z[iStart-1]=='^' ){
+ pRet->pPhrase->aToken[0].bFirst = 1;
+ iStart--;
+ }else{
+ break;
+ }
}
+
}
nConsumed = iEnd;
}
@@ -112129,36 +122198,56 @@
char *zTemp = 0;
int nTemp = 0;
+ const int nSpace = sizeof(Fts3Expr) + sizeof(Fts3Phrase);
+ int nToken = 0;
+
+ /* The final Fts3Expr data structure, including the Fts3Phrase,
+ ** Fts3PhraseToken structures token buffers are all stored as a single
+ ** allocation so that the expression can be freed with a single call to
+ ** sqlite3_free(). Setting this up requires a two pass approach.
+ **
+ ** The first pass, in the block below, uses a tokenizer cursor to iterate
+ ** through the tokens in the expression. This pass uses fts3ReallocOrFree()
+ ** to assemble data in two dynamic buffers:
+ **
+ ** Buffer p: Points to the Fts3Expr structure, followed by the Fts3Phrase
+ ** structure, followed by the array of Fts3PhraseToken
+ ** structures. This pass only populates the Fts3PhraseToken array.
+ **
+ ** Buffer zTemp: Contains copies of all tokens.
+ **
+ ** The second pass, in the block that begins "if( rc==SQLITE_DONE )" below,
+ ** appends buffer zTemp to buffer p, and fills in the Fts3Expr and Fts3Phrase
+ ** structures.
+ */
rc = pModule->xOpen(pTokenizer, zInput, nInput, &pCursor);
if( rc==SQLITE_OK ){
int ii;
pCursor->pTokenizer = pTokenizer;
for(ii=0; rc==SQLITE_OK; ii++){
- const char *zToken;
- int nToken, iBegin, iEnd, iPos;
- rc = pModule->xNext(pCursor, &zToken, &nToken, &iBegin, &iEnd, &iPos);
+ const char *zByte;
+ int nByte, iBegin, iEnd, iPos;
+ rc = pModule->xNext(pCursor, &zByte, &nByte, &iBegin, &iEnd, &iPos);
if( rc==SQLITE_OK ){
- int nByte = sizeof(Fts3Expr) + sizeof(Fts3Phrase);
- p = fts3ReallocOrFree(p, nByte+ii*sizeof(Fts3PhraseToken));
- zTemp = fts3ReallocOrFree(zTemp, nTemp + nToken);
- if( !p || !zTemp ){
- goto no_mem;
- }
- if( ii==0 ){
- memset(p, 0, nByte);
- p->pPhrase = (Fts3Phrase *)&p[1];
- }
- p->pPhrase = (Fts3Phrase *)&p[1];
- memset(&p->pPhrase->aToken[ii], 0, sizeof(Fts3PhraseToken));
- p->pPhrase->nToken = ii+1;
- p->pPhrase->aToken[ii].n = nToken;
- memcpy(&zTemp[nTemp], zToken, nToken);
- nTemp += nToken;
- if( iEnd<nInput && zInput[iEnd]=='*' ){
- p->pPhrase->aToken[ii].isPrefix = 1;
- }else{
- p->pPhrase->aToken[ii].isPrefix = 0;
- }
+ Fts3PhraseToken *pToken;
+
+ p = fts3ReallocOrFree(p, nSpace + ii*sizeof(Fts3PhraseToken));
+ if( !p ) goto no_mem;
+
+ zTemp = fts3ReallocOrFree(zTemp, nTemp + nByte);
+ if( !zTemp ) goto no_mem;
+
+ assert( nToken==ii );
+ pToken = &((Fts3Phrase *)(&p[1]))->aToken[ii];
+ memset(pToken, 0, sizeof(Fts3PhraseToken));
+
+ memcpy(&zTemp[nTemp], zByte, nByte);
+ nTemp += nByte;
+
+ pToken->n = nByte;
+ pToken->isPrefix = (iEnd<nInput && zInput[iEnd]=='*');
+ pToken->bFirst = (iBegin>0 && zInput[iBegin-1]=='^');
+ nToken = ii+1;
}
}
@@ -112168,28 +122257,28 @@
if( rc==SQLITE_DONE ){
int jj;
- char *zNew = NULL;
- int nNew = 0;
- int nByte = sizeof(Fts3Expr) + sizeof(Fts3Phrase);
- nByte += (p?(p->pPhrase->nToken-1):0) * sizeof(Fts3PhraseToken);
- p = fts3ReallocOrFree(p, nByte + nTemp);
- if( !p ){
- goto no_mem;
- }
- if( zTemp ){
- zNew = &(((char *)p)[nByte]);
- memcpy(zNew, zTemp, nTemp);
- }else{
- memset(p, 0, nByte+nTemp);
- }
- p->pPhrase = (Fts3Phrase *)&p[1];
- for(jj=0; jj<p->pPhrase->nToken; jj++){
- p->pPhrase->aToken[jj].z = &zNew[nNew];
- nNew += p->pPhrase->aToken[jj].n;
- }
- sqlite3_free(zTemp);
+ char *zBuf = 0;
+
+ p = fts3ReallocOrFree(p, nSpace + nToken*sizeof(Fts3PhraseToken) + nTemp);
+ if( !p ) goto no_mem;
+ memset(p, 0, (char *)&(((Fts3Phrase *)&p[1])->aToken[0])-(char *)p);
p->eType = FTSQUERY_PHRASE;
+ p->pPhrase = (Fts3Phrase *)&p[1];
p->pPhrase->iColumn = pParse->iDefaultCol;
+ p->pPhrase->nToken = nToken;
+
+ zBuf = (char *)&p->pPhrase->aToken[nToken];
+ if( zTemp ){
+ memcpy(zBuf, zTemp, nTemp);
+ sqlite3_free(zTemp);
+ }else{
+ assert( nTemp==0 );
+ }
+
+ for(jj=0; jj<p->pPhrase->nToken; jj++){
+ p->pPhrase->aToken[jj].z = zBuf;
+ zBuf += p->pPhrase->aToken[jj].n;
+ }
rc = SQLITE_OK;
}
@@ -112246,6 +122335,8 @@
const char *zInput = z;
int nInput = n;
+ pParse->isNot = 0;
+
/* Skip over any whitespace before checking for a keyword, an open or
** close bracket, or a quoted string.
*/
@@ -112464,7 +122555,7 @@
int isPhrase;
if( !sqlite3_fts3_enable_parentheses
- && p->eType==FTSQUERY_PHRASE && p->pPhrase->isNot
+ && p->eType==FTSQUERY_PHRASE && pParse->isNot
){
/* Create an implicit NOT operator. */
Fts3Expr *pNot = fts3MallocZero(sizeof(Fts3Expr));
@@ -112482,7 +122573,6 @@
p = pPrev;
}else{
int eType = p->eType;
- assert( eType!=FTSQUERY_PHRASE || !p->pPhrase->isNot );
isPhrase = (eType==FTSQUERY_PHRASE || p->pLeft);
/* The isRequirePhrase variable is set to true if a phrase or
@@ -112608,6 +122698,7 @@
SQLITE_PRIVATE int sqlite3Fts3ExprParse(
sqlite3_tokenizer *pTokenizer, /* Tokenizer module */
char **azCol, /* Array of column names for fts3 table */
+ int bFts4, /* True to allow FTS4-only syntax */
int nCol, /* Number of entries in azCol[] */
int iDefaultCol, /* Default column to query */
const char *z, int n, /* Text of MATCH query */
@@ -112621,6 +122712,7 @@
sParse.nCol = nCol;
sParse.iDefaultCol = iDefaultCol;
sParse.nNest = 0;
+ sParse.bFts4 = bFts4;
if( z==0 ){
*ppExpr = 0;
return SQLITE_OK;
@@ -112645,9 +122737,11 @@
*/
SQLITE_PRIVATE void sqlite3Fts3ExprFree(Fts3Expr *p){
if( p ){
+ assert( p->eType==FTSQUERY_PHRASE || p->pPhrase==0 );
sqlite3Fts3ExprFree(p->pLeft);
sqlite3Fts3ExprFree(p->pRight);
- sqlite3_free(p->aDoclist);
+ sqlite3Fts3EvalPhraseCleanup(p->pPhrase);
+ sqlite3_free(p->aMI);
sqlite3_free(p);
}
}
@@ -112659,6 +122753,7 @@
#ifdef SQLITE_TEST
+/* #include <stdio.h> */
/*
** Function to query the hash-table of tokenizers (see README.tokenizers).
@@ -112704,7 +122799,7 @@
Fts3Phrase *pPhrase = pExpr->pPhrase;
int i;
zBuf = sqlite3_mprintf(
- "%zPHRASE %d %d", zBuf, pPhrase->iColumn, pPhrase->isNot);
+ "%zPHRASE %d 0", zBuf, pPhrase->iColumn);
for(i=0; zBuf && i<pPhrase->nToken; i++){
zBuf = sqlite3_mprintf("%z %.*s%s", zBuf,
pPhrase->aToken[i].n, pPhrase->aToken[i].z,
@@ -112807,7 +122902,7 @@
}
rc = sqlite3Fts3ExprParse(
- pTokenizer, azCol, nCol, nCol, zExpr, nExpr, &pExpr
+ pTokenizer, azCol, 0, nCol, nCol, zExpr, nExpr, &pExpr
);
if( rc!=SQLITE_OK && rc!=SQLITE_NOMEM ){
sqlite3_result_error(context, "Error parsing expression", -1);
@@ -112869,6 +122964,9 @@
*/
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
+/* #include <assert.h> */
+/* #include <stdlib.h> */
+/* #include <string.h> */
/*
@@ -113249,7 +123347,10 @@
*/
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
-
+/* #include <assert.h> */
+/* #include <stdlib.h> */
+/* #include <stdio.h> */
+/* #include <string.h> */
/*
@@ -113260,7 +123361,7 @@
} porter_tokenizer;
/*
-** Class derived from sqlit3_tokenizer_cursor
+** Class derived from sqlite3_tokenizer_cursor
*/
typedef struct porter_tokenizer_cursor {
sqlite3_tokenizer_cursor base;
@@ -113893,10 +123994,8 @@
*/
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
-#ifndef SQLITE_CORE
- SQLITE_EXTENSION_INIT1
-#endif
-
+/* #include <assert.h> */
+/* #include <string.h> */
/*
** Implementation of the SQL scalar function for accessing the underlying
@@ -114020,7 +124119,7 @@
){
int rc;
char *z = (char *)zArg;
- int n;
+ int n = 0;
char *zCopy;
char *zEnd; /* Pointer to nul-term of zCopy */
sqlite3_tokenizer_module *m;
@@ -114072,6 +124171,8 @@
#ifdef SQLITE_TEST
+/* #include <tcl.h> */
+/* #include <string.h> */
/*
** Implementation of a special SQL scalar function for testing tokenizers
@@ -114383,7 +124484,10 @@
*/
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
-
+/* #include <assert.h> */
+/* #include <stdlib.h> */
+/* #include <stdio.h> */
+/* #include <string.h> */
typedef struct simple_tokenizer {
@@ -114609,6 +124713,9 @@
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
+/* #include <string.h> */
+/* #include <assert.h> */
+/* #include <stdlib.h> */
/*
** When full-text index nodes are loaded from disk, the buffer that they
@@ -114622,14 +124729,40 @@
*/
#define FTS3_NODE_PADDING (FTS3_VARINT_MAX*2)
+/*
+** Under certain circumstances, b-tree nodes (doclists) can be loaded into
+** memory incrementally instead of all at once. This can be a big performance
+** win (reduced IO and CPU) if SQLite stops calling the virtual table xNext()
+** method before retrieving all query results (as may happen, for example,
+** if a query has a LIMIT clause).
+**
+** Incremental loading is used for b-tree nodes FTS3_NODE_CHUNK_THRESHOLD
+** bytes and larger. Nodes are loaded in chunks of FTS3_NODE_CHUNKSIZE bytes.
+** The code is written so that the hard lower-limit for each of these values
+** is 1. Clearly such small values would be inefficient, but can be useful
+** for testing purposes.
+**
+** If this module is built with SQLITE_TEST defined, these constants may
+** be overridden at runtime for testing purposes. File fts3_test.c contains
+** a Tcl interface to read and write the values.
+*/
+#ifdef SQLITE_TEST
+int test_fts3_node_chunksize = (4*1024);
+int test_fts3_node_chunk_threshold = (4*1024)*4;
+# define FTS3_NODE_CHUNKSIZE test_fts3_node_chunksize
+# define FTS3_NODE_CHUNK_THRESHOLD test_fts3_node_chunk_threshold
+#else
+# define FTS3_NODE_CHUNKSIZE (4*1024)
+# define FTS3_NODE_CHUNK_THRESHOLD (FTS3_NODE_CHUNKSIZE*4)
+#endif
+
typedef struct PendingList PendingList;
typedef struct SegmentNode SegmentNode;
typedef struct SegmentWriter SegmentWriter;
/*
-** Data structure used while accumulating terms in the pending-terms hash
-** table. The hash table entry maps from term (a string) to a malloc'd
-** instance of this structure.
+** An instance of the following data structure is used to build doclists
+** incrementally. See function fts3PendingListAppend() for details.
*/
struct PendingList {
int nData;
@@ -114660,7 +124793,6 @@
**
** sqlite3Fts3SegReaderNew()
** sqlite3Fts3SegReaderFree()
-** sqlite3Fts3SegReaderCost()
** sqlite3Fts3SegReaderIterate()
**
** Methods used to manipulate Fts3SegReader structures:
@@ -114679,6 +124811,9 @@
char *aNode; /* Pointer to node data (or NULL) */
int nNode; /* Size of buffer at aNode (or 0) */
+ int nPopulate; /* If >0, bytes of buffer aNode[] loaded */
+ sqlite3_blob *pBlob; /* If not NULL, blob handle to read node */
+
Fts3HashElem **ppNextElem;
/* Variables set by fts3SegReaderNext(). These may be read directly
@@ -114692,8 +124827,11 @@
char *aDoclist; /* Pointer to doclist of current entry */
int nDoclist; /* Size of doclist in current entry */
- /* The following variables are used to iterate through the current doclist */
+ /* The following variables are used by fts3SegReaderNextDocid() to iterate
+ ** through the current doclist (aDoclist/nDoclist).
+ */
char *pOffsetList;
+ int nOffsetList; /* For descending pending seg-readers only */
sqlite3_int64 iDocid;
};
@@ -114731,6 +124869,14 @@
** fts3NodeAddTerm()
** fts3NodeWrite()
** fts3NodeFree()
+**
+** When a b+tree is written to the database (either as a result of a merge
+** or the pending-terms table being flushed), leaves are written into the
+** database file as soon as they are completely populated. The interior of
+** the tree is assembled in memory and written out only once all leaves have
+** been populated and stored. This is Ok, as the b+-tree fanout is usually
+** very large, meaning that the interior of the tree consumes relatively
+** little memory.
*/
struct SegmentNode {
SegmentNode *pParent; /* Parent node (or NULL for root node) */
@@ -114761,10 +124907,10 @@
#define SQL_NEXT_SEGMENTS_ID 10
#define SQL_INSERT_SEGDIR 11
#define SQL_SELECT_LEVEL 12
-#define SQL_SELECT_ALL_LEVEL 13
+#define SQL_SELECT_LEVEL_RANGE 13
#define SQL_SELECT_LEVEL_COUNT 14
-#define SQL_SELECT_SEGDIR_COUNT_MAX 15
-#define SQL_DELETE_SEGDIR_BY_LEVEL 16
+#define SQL_SELECT_SEGDIR_MAX_LEVEL 15
+#define SQL_DELETE_SEGDIR_LEVEL 16
#define SQL_DELETE_SEGMENTS_RANGE 17
#define SQL_CONTENT_INSERT 18
#define SQL_DELETE_DOCSIZE 19
@@ -114773,6 +124919,11 @@
#define SQL_SELECT_DOCTOTAL 22
#define SQL_REPLACE_DOCTOTAL 23
+#define SQL_SELECT_ALL_PREFIX_LEVEL 24
+#define SQL_DELETE_ALL_TERMS_SEGDIR 25
+
+#define SQL_DELETE_SEGDIR_RANGE 26
+
/*
** This function is used to obtain an SQLite prepared statement handle
** for the statement identified by the second argument. If successful,
@@ -114798,7 +124949,7 @@
/* 4 */ "DELETE FROM %Q.'%q_segdir'",
/* 5 */ "DELETE FROM %Q.'%q_docsize'",
/* 6 */ "DELETE FROM %Q.'%q_stat'",
-/* 7 */ "SELECT * FROM %Q.'%q_content' WHERE rowid=?",
+/* 7 */ "SELECT %s WHERE rowid=?",
/* 8 */ "SELECT (SELECT max(idx) FROM %Q.'%q_segdir' WHERE level = ?) + 1",
/* 9 */ "INSERT INTO %Q.'%q_segments'(blockid, block) VALUES(?, ?)",
/* 10 */ "SELECT coalesce((SELECT max(blockid) FROM %Q.'%q_segments') + 1, 1)",
@@ -114808,19 +124959,25 @@
/* 12 */ "SELECT idx, start_block, leaves_end_block, end_block, root "
"FROM %Q.'%q_segdir' WHERE level = ? ORDER BY idx ASC",
/* 13 */ "SELECT idx, start_block, leaves_end_block, end_block, root "
- "FROM %Q.'%q_segdir' ORDER BY level DESC, idx ASC",
+ "FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ?"
+ "ORDER BY level DESC, idx ASC",
/* 14 */ "SELECT count(*) FROM %Q.'%q_segdir' WHERE level = ?",
-/* 15 */ "SELECT count(*), max(level) FROM %Q.'%q_segdir'",
+/* 15 */ "SELECT max(level) FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ?",
/* 16 */ "DELETE FROM %Q.'%q_segdir' WHERE level = ?",
/* 17 */ "DELETE FROM %Q.'%q_segments' WHERE blockid BETWEEN ? AND ?",
-/* 18 */ "INSERT INTO %Q.'%q_content' VALUES(%z)",
+/* 18 */ "INSERT INTO %Q.'%q_content' VALUES(%s)",
/* 19 */ "DELETE FROM %Q.'%q_docsize' WHERE docid = ?",
/* 20 */ "REPLACE INTO %Q.'%q_docsize' VALUES(?,?)",
/* 21 */ "SELECT size FROM %Q.'%q_docsize' WHERE docid=?",
/* 22 */ "SELECT value FROM %Q.'%q_stat' WHERE id=0",
/* 23 */ "REPLACE INTO %Q.'%q_stat' VALUES(0,?)",
+/* 24 */ "",
+/* 25 */ "",
+
+/* 26 */ "DELETE FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ?",
+
};
int rc = SQLITE_OK;
sqlite3_stmt *pStmt;
@@ -114832,20 +124989,9 @@
if( !pStmt ){
char *zSql;
if( eStmt==SQL_CONTENT_INSERT ){
- int i; /* Iterator variable */
- char *zVarlist; /* The "?, ?, ..." string */
- zVarlist = (char *)sqlite3_malloc(2*p->nColumn+2);
- if( !zVarlist ){
- *pp = 0;
- return SQLITE_NOMEM;
- }
- zVarlist[0] = '?';
- zVarlist[p->nColumn*2+1] = '\0';
- for(i=1; i<=p->nColumn; i++){
- zVarlist[i*2-1] = ',';
- zVarlist[i*2] = '?';
- }
- zSql = sqlite3_mprintf(azSql[eStmt], p->zDb, p->zName, zVarlist);
+ zSql = sqlite3_mprintf(azSql[eStmt], p->zDb, p->zName, p->zWriteExprlist);
+ }else if( eStmt==SQL_SELECT_CONTENT_BY_ROWID ){
+ zSql = sqlite3_mprintf(azSql[eStmt], p->zReadExprlist);
}else{
zSql = sqlite3_mprintf(azSql[eStmt], p->zDb, p->zName);
}
@@ -114886,9 +125032,9 @@
sqlite3_bind_int64(pStmt, 1, iDocid);
}
rc = sqlite3_step(pStmt);
- if( rc!=SQLITE_ROW ){
+ if( rc!=SQLITE_ROW || sqlite3_column_type(pStmt, 0)!=SQLITE_BLOB ){
rc = sqlite3_reset(pStmt);
- if( rc==SQLITE_OK ) rc = SQLITE_CORRUPT;
+ if( rc==SQLITE_OK ) rc = FTS_CORRUPT_VTAB;
pStmt = 0;
}else{
rc = SQLITE_OK;
@@ -114956,17 +125102,24 @@
** not what users expect when they get SQLITE_LOCKED_SHAREDCACHE. It can
** still happen if the user reads data directly from the %_segments or
** %_segdir tables instead of going through FTS3 though.
+**
+** This reasoning does not apply to a content=xxx table.
*/
SQLITE_PRIVATE int sqlite3Fts3ReadLock(Fts3Table *p){
int rc; /* Return code */
sqlite3_stmt *pStmt; /* Statement used to obtain lock */
- rc = fts3SqlStmt(p, SQL_SELECT_CONTENT_BY_ROWID, &pStmt, 0);
- if( rc==SQLITE_OK ){
- sqlite3_bind_null(pStmt, 1);
- sqlite3_step(pStmt);
- rc = sqlite3_reset(pStmt);
+ if( p->zContentTbl==0 ){
+ rc = fts3SqlStmt(p, SQL_SELECT_CONTENT_BY_ROWID, &pStmt, 0);
+ if( rc==SQLITE_OK ){
+ sqlite3_bind_null(pStmt, 1);
+ sqlite3_step(pStmt);
+ rc = sqlite3_reset(pStmt);
+ }
+ }else{
+ rc = SQLITE_OK;
}
+
return rc;
}
@@ -114987,8 +125140,35 @@
** 3: end_block
** 4: root
*/
-SQLITE_PRIVATE int sqlite3Fts3AllSegdirs(Fts3Table *p, sqlite3_stmt **ppStmt){
- return fts3SqlStmt(p, SQL_SELECT_ALL_LEVEL, ppStmt, 0);
+SQLITE_PRIVATE int sqlite3Fts3AllSegdirs(
+ Fts3Table *p, /* FTS3 table */
+ int iIndex, /* Index for p->aIndex[] */
+ int iLevel, /* Level to select */
+ sqlite3_stmt **ppStmt /* OUT: Compiled statement */
+){
+ int rc;
+ sqlite3_stmt *pStmt = 0;
+
+ assert( iLevel==FTS3_SEGCURSOR_ALL || iLevel>=0 );
+ assert( iLevel<FTS3_SEGDIR_MAXLEVEL );
+ assert( iIndex>=0 && iIndex<p->nIndex );
+
+ if( iLevel<0 ){
+ /* "SELECT * FROM %_segdir WHERE level BETWEEN ? AND ? ORDER BY ..." */
+ rc = fts3SqlStmt(p, SQL_SELECT_LEVEL_RANGE, &pStmt, 0);
+ if( rc==SQLITE_OK ){
+ sqlite3_bind_int(pStmt, 1, iIndex*FTS3_SEGDIR_MAXLEVEL);
+ sqlite3_bind_int(pStmt, 2, (iIndex+1)*FTS3_SEGDIR_MAXLEVEL-1);
+ }
+ }else{
+ /* "SELECT * FROM %_segdir WHERE level = ? ORDER BY ..." */
+ rc = fts3SqlStmt(p, SQL_SELECT_LEVEL, &pStmt, 0);
+ if( rc==SQLITE_OK ){
+ sqlite3_bind_int(pStmt, 1, iLevel+iIndex*FTS3_SEGDIR_MAXLEVEL);
+ }
+ }
+ *ppStmt = pStmt;
+ return rc;
}
@@ -115101,6 +125281,47 @@
}
/*
+** Free a PendingList object allocated by fts3PendingListAppend().
+*/
+static void fts3PendingListDelete(PendingList *pList){
+ sqlite3_free(pList);
+}
+
+/*
+** Add an entry to one of the pending-terms hash tables.
+*/
+static int fts3PendingTermsAddOne(
+ Fts3Table *p,
+ int iCol,
+ int iPos,
+ Fts3Hash *pHash, /* Pending terms hash table to add entry to */
+ const char *zToken,
+ int nToken
+){
+ PendingList *pList;
+ int rc = SQLITE_OK;
+
+ pList = (PendingList *)fts3HashFind(pHash, zToken, nToken);
+ if( pList ){
+ p->nPendingData -= (pList->nData + nToken + sizeof(Fts3HashElem));
+ }
+ if( fts3PendingListAppend(&pList, p->iPrevDocid, iCol, iPos, &rc) ){
+ if( pList==fts3HashInsert(pHash, zToken, nToken, pList) ){
+ /* Malloc failed while inserting the new entry. This can only
+ ** happen if there was no previous entry for this token.
+ */
+ assert( 0==fts3HashFind(pHash, zToken, nToken) );
+ sqlite3_free(pList);
+ rc = SQLITE_NOMEM;
+ }
+ }
+ if( rc==SQLITE_OK ){
+ p->nPendingData += (pList->nData + nToken + sizeof(Fts3HashElem));
+ }
+ return rc;
+}
+
+/*
** Tokenize the nul-terminated string zText and add all tokens to the
** pending-terms hash-table. The docid used is that currently stored in
** p->iPrevDocid, and the column is specified by argument iCol.
@@ -115130,6 +125351,14 @@
assert( pTokenizer && pModule );
+ /* If the user has inserted a NULL value, this function may be called with
+ ** zText==0. In this case, add zero token entries to the hash table and
+ ** return early. */
+ if( zText==0 ){
+ *pnWord = 0;
+ return SQLITE_OK;
+ }
+
rc = pModule->xOpen(pTokenizer, zText, -1, &pCsr);
if( rc!=SQLITE_OK ){
return rc;
@@ -115140,8 +125369,7 @@
while( SQLITE_OK==rc
&& SQLITE_OK==(rc = xNext(pCsr, &zToken, &nToken, &iStart, &iEnd, &iPos))
){
- PendingList *pList;
-
+ int i;
if( iPos>=nWord ) nWord = iPos+1;
/* Positions cannot be negative; we use -1 as a terminator internally.
@@ -115152,22 +125380,19 @@
break;
}
- pList = (PendingList *)fts3HashFind(&p->pendingTerms, zToken, nToken);
- if( pList ){
- p->nPendingData -= (pList->nData + nToken + sizeof(Fts3HashElem));
- }
- if( fts3PendingListAppend(&pList, p->iPrevDocid, iCol, iPos, &rc) ){
- if( pList==fts3HashInsert(&p->pendingTerms, zToken, nToken, pList) ){
- /* Malloc failed while inserting the new entry. This can only
- ** happen if there was no previous entry for this token.
- */
- assert( 0==fts3HashFind(&p->pendingTerms, zToken, nToken) );
- sqlite3_free(pList);
- rc = SQLITE_NOMEM;
- }
- }
- if( rc==SQLITE_OK ){
- p->nPendingData += (pList->nData + nToken + sizeof(Fts3HashElem));
+ /* Add the term to the terms index */
+ rc = fts3PendingTermsAddOne(
+ p, iCol, iPos, &p->aIndex[0].hPending, zToken, nToken
+ );
+
+ /* Add the term to each of the prefix indexes that it is not too
+ ** short for. */
+ for(i=1; rc==SQLITE_OK && i<p->nIndex; i++){
+ struct Fts3Index *pIndex = &p->aIndex[i];
+ if( nToken<pIndex->nPrefix ) continue;
+ rc = fts3PendingTermsAddOne(
+ p, iCol, iPos, &pIndex->hPending, zToken, pIndex->nPrefix
+ );
}
}
@@ -115197,14 +125422,19 @@
}
/*
-** Discard the contents of the pending-terms hash table.
+** Discard the contents of the pending-terms hash tables.
*/
SQLITE_PRIVATE void sqlite3Fts3PendingTermsClear(Fts3Table *p){
- Fts3HashElem *pElem;
- for(pElem=fts3HashFirst(&p->pendingTerms); pElem; pElem=fts3HashNext(pElem)){
- sqlite3_free(fts3HashData(pElem));
+ int i;
+ for(i=0; i<p->nIndex; i++){
+ Fts3HashElem *pElem;
+ Fts3Hash *pHash = &p->aIndex[i].hPending;
+ for(pElem=fts3HashFirst(pHash); pElem; pElem=fts3HashNext(pElem)){
+ PendingList *pList = (PendingList *)fts3HashData(pElem);
+ fts3PendingListDelete(pList);
+ }
+ fts3HashClear(pHash);
}
- fts3HashClear(&p->pendingTerms);
p->nPendingData = 0;
}
@@ -115220,11 +125450,9 @@
int i; /* Iterator variable */
for(i=2; i<p->nColumn+2; i++){
const char *zText = (const char *)sqlite3_value_text(apVal[i]);
- if( zText ){
- int rc = fts3PendingTermsAdd(p, zText, i-2, &aSz[i-2]);
- if( rc!=SQLITE_OK ){
- return rc;
- }
+ int rc = fts3PendingTermsAdd(p, zText, i-2, &aSz[i-2]);
+ if( rc!=SQLITE_OK ){
+ return rc;
}
aSz[p->nColumn] += sqlite3_value_bytes(apVal[i]);
}
@@ -115252,6 +125480,18 @@
int rc; /* Return code */
sqlite3_stmt *pContentInsert; /* INSERT INTO %_content VALUES(...) */
+ if( p->zContentTbl ){
+ sqlite3_value *pRowid = apVal[p->nColumn+3];
+ if( sqlite3_value_type(pRowid)==SQLITE_NULL ){
+ pRowid = apVal[1];
+ }
+ if( sqlite3_value_type(pRowid)!=SQLITE_INTEGER ){
+ return SQLITE_CONSTRAINT;
+ }
+ *piDocid = sqlite3_value_int64(pRowid);
+ return SQLITE_OK;
+ }
+
/* Locate the statement handle used to insert data into the %_content
** table. The SQL for this statement is:
**
@@ -115302,14 +125542,16 @@
** Remove all data from the FTS3 table. Clear the hash table containing
** pending terms.
*/
-static int fts3DeleteAll(Fts3Table *p){
+static int fts3DeleteAll(Fts3Table *p, int bContent){
int rc = SQLITE_OK; /* Return code */
/* Discard the contents of the pending-terms hash table. */
sqlite3Fts3PendingTermsClear(p);
- /* Delete everything from the %_content, %_segments and %_segdir tables. */
- fts3SqlExec(&rc, p, SQL_DELETE_ALL_CONTENT, 0);
+ /* Delete everything from the shadow tables. Except, leave %_content as
+ ** is if bContent is false. */
+ assert( p->zContentTbl==0 || bContent==0 );
+ if( bContent ) fts3SqlExec(&rc, p, SQL_DELETE_ALL_CONTENT, 0);
fts3SqlExec(&rc, p, SQL_DELETE_ALL_SEGMENTS, 0);
fts3SqlExec(&rc, p, SQL_DELETE_ALL_SEGDIR, 0);
if( p->bHasDocsize ){
@@ -115329,14 +125571,14 @@
static void fts3DeleteTerms(
int *pRC, /* Result code */
Fts3Table *p, /* The FTS table to delete from */
- sqlite3_value **apVal, /* apVal[] contains the docid to be deleted */
+ sqlite3_value *pRowid, /* The docid to be deleted */
u32 *aSz /* Sizes of deleted document written here */
){
int rc;
sqlite3_stmt *pSelect;
if( *pRC ) return;
- rc = fts3SqlStmt(p, SQL_SELECT_CONTENT_BY_ROWID, &pSelect, apVal);
+ rc = fts3SqlStmt(p, SQL_SELECT_CONTENT_BY_ROWID, &pSelect, &pRowid);
if( rc==SQLITE_OK ){
if( SQLITE_ROW==sqlite3_step(pSelect) ){
int i;
@@ -115362,7 +125604,7 @@
** Forward declaration to account for the circular dependency between
** functions fts3SegmentMerge() and fts3AllocateSegdirIdx().
*/
-static int fts3SegmentMerge(Fts3Table *, int);
+static int fts3SegmentMerge(Fts3Table *, int, int);
/*
** This function allocates a new level iLevel index in the segdir table.
@@ -115379,7 +125621,12 @@
** If successful, *piIdx is set to the allocated index slot and SQLITE_OK
** returned. Otherwise, an SQLite error code is returned.
*/
-static int fts3AllocateSegdirIdx(Fts3Table *p, int iLevel, int *piIdx){
+static int fts3AllocateSegdirIdx(
+ Fts3Table *p,
+ int iIndex, /* Index for p->aIndex */
+ int iLevel,
+ int *piIdx
+){
int rc; /* Return Code */
sqlite3_stmt *pNextIdx; /* Query for next idx at level iLevel */
int iNext = 0; /* Result of query pNextIdx */
@@ -115387,7 +125634,7 @@
/* Set variable iNext to the next available segdir index at level iLevel. */
rc = fts3SqlStmt(p, SQL_NEXT_SEGMENT_INDEX, &pNextIdx, 0);
if( rc==SQLITE_OK ){
- sqlite3_bind_int(pNextIdx, 1, iLevel);
+ sqlite3_bind_int(pNextIdx, 1, iIndex*FTS3_SEGDIR_MAXLEVEL + iLevel);
if( SQLITE_ROW==sqlite3_step(pNextIdx) ){
iNext = sqlite3_column_int(pNextIdx, 0);
}
@@ -115401,7 +125648,7 @@
** if iNext is less than FTS3_MERGE_COUNT, allocate index iNext.
*/
if( iNext>=FTS3_MERGE_COUNT ){
- rc = fts3SegmentMerge(p, iLevel);
+ rc = fts3SegmentMerge(p, iIndex, iLevel);
*piIdx = 0;
}else{
*piIdx = iNext;
@@ -115442,7 +125689,8 @@
Fts3Table *p, /* FTS3 table handle */
sqlite3_int64 iBlockid, /* Access the row with blockid=$iBlockid */
char **paBlob, /* OUT: Blob data in malloc'd buffer */
- int *pnBlob /* OUT: Size of blob data */
+ int *pnBlob, /* OUT: Size of blob data */
+ int *pnLoad /* OUT: Bytes actually loaded */
){
int rc; /* Return code */
@@ -115463,11 +125711,16 @@
if( rc==SQLITE_OK ){
int nByte = sqlite3_blob_bytes(p->pSegments);
+ *pnBlob = nByte;
if( paBlob ){
char *aByte = sqlite3_malloc(nByte + FTS3_NODE_PADDING);
if( !aByte ){
rc = SQLITE_NOMEM;
}else{
+ if( pnLoad && nByte>(FTS3_NODE_CHUNK_THRESHOLD) ){
+ nByte = FTS3_NODE_CHUNKSIZE;
+ *pnLoad = nByte;
+ }
rc = sqlite3_blob_read(p->pSegments, aByte, nByte, 0);
memset(&aByte[nByte], 0, FTS3_NODE_PADDING);
if( rc!=SQLITE_OK ){
@@ -115477,7 +125730,6 @@
}
*paBlob = aByte;
}
- *pnBlob = nByte;
}
return rc;
@@ -115491,13 +125743,55 @@
sqlite3_blob_close(p->pSegments);
p->pSegments = 0;
}
+
+static int fts3SegReaderIncrRead(Fts3SegReader *pReader){
+ int nRead; /* Number of bytes to read */
+ int rc; /* Return code */
+
+ nRead = MIN(pReader->nNode - pReader->nPopulate, FTS3_NODE_CHUNKSIZE);
+ rc = sqlite3_blob_read(
+ pReader->pBlob,
+ &pReader->aNode[pReader->nPopulate],
+ nRead,
+ pReader->nPopulate
+ );
+
+ if( rc==SQLITE_OK ){
+ pReader->nPopulate += nRead;
+ memset(&pReader->aNode[pReader->nPopulate], 0, FTS3_NODE_PADDING);
+ if( pReader->nPopulate==pReader->nNode ){
+ sqlite3_blob_close(pReader->pBlob);
+ pReader->pBlob = 0;
+ pReader->nPopulate = 0;
+ }
+ }
+ return rc;
+}
+
+static int fts3SegReaderRequire(Fts3SegReader *pReader, char *pFrom, int nByte){
+ int rc = SQLITE_OK;
+ assert( !pReader->pBlob
+ || (pFrom>=pReader->aNode && pFrom<&pReader->aNode[pReader->nNode])
+ );
+ while( pReader->pBlob && rc==SQLITE_OK
+ && (pFrom - pReader->aNode + nByte)>pReader->nPopulate
+ ){
+ rc = fts3SegReaderIncrRead(pReader);
+ }
+ return rc;
+}
/*
** Move the iterator passed as the first argument to the next term in the
** segment. If successful, SQLITE_OK is returned. If there is no next term,
** SQLITE_DONE. Otherwise, an SQLite error code.
*/
-static int fts3SegReaderNext(Fts3Table *p, Fts3SegReader *pReader){
+static int fts3SegReaderNext(
+ Fts3Table *p,
+ Fts3SegReader *pReader,
+ int bIncr
+){
+ int rc; /* Return code of various sub-routines */
char *pNext; /* Cursor variable */
int nPrefix; /* Number of bytes in term prefix */
int nSuffix; /* Number of bytes in term suffix */
@@ -115509,7 +125803,6 @@
}
if( !pNext || pNext>=&pReader->aNode[pReader->nNode] ){
- int rc; /* Return code from Fts3ReadBlock() */
if( fts3SegReaderIsPending(pReader) ){
Fts3HashElem *pElem = *(pReader->ppNextElem);
@@ -115529,6 +125822,8 @@
if( !fts3SegReaderIsRootOnly(pReader) ){
sqlite3_free(pReader->aNode);
+ sqlite3_blob_close(pReader->pBlob);
+ pReader->pBlob = 0;
}
pReader->aNode = 0;
@@ -115540,21 +125835,31 @@
}
rc = sqlite3Fts3ReadBlock(
- p, ++pReader->iCurrentBlock, &pReader->aNode, &pReader->nNode
+ p, ++pReader->iCurrentBlock, &pReader->aNode, &pReader->nNode,
+ (bIncr ? &pReader->nPopulate : 0)
);
if( rc!=SQLITE_OK ) return rc;
+ assert( pReader->pBlob==0 );
+ if( bIncr && pReader->nPopulate<pReader->nNode ){
+ pReader->pBlob = p->pSegments;
+ p->pSegments = 0;
+ }
pNext = pReader->aNode;
}
+
+ assert( !fts3SegReaderIsPending(pReader) );
+
+ rc = fts3SegReaderRequire(pReader, pNext, FTS3_VARINT_MAX*2);
+ if( rc!=SQLITE_OK ) return rc;
/* Because of the FTS3_NODE_PADDING bytes of padding, the following is
- ** safe (no risk of overread) even if the node data is corrupted.
- */
+ ** safe (no risk of overread) even if the node data is corrupted. */
pNext += sqlite3Fts3GetVarint32(pNext, &nPrefix);
pNext += sqlite3Fts3GetVarint32(pNext, &nSuffix);
if( nPrefix<0 || nSuffix<=0
|| &pNext[nSuffix]>&pReader->aNode[pReader->nNode]
){
- return SQLITE_CORRUPT;
+ return FTS_CORRUPT_VTAB;
}
if( nPrefix+nSuffix>pReader->nTermAlloc ){
@@ -115566,6 +125871,10 @@
pReader->zTerm = zNew;
pReader->nTermAlloc = nNew;
}
+
+ rc = fts3SegReaderRequire(pReader, pNext, nSuffix+FTS3_VARINT_MAX);
+ if( rc!=SQLITE_OK ) return rc;
+
memcpy(&pReader->zTerm[nPrefix], pNext, nSuffix);
pReader->nTerm = nPrefix+nSuffix;
pNext += nSuffix;
@@ -115578,9 +125887,9 @@
** of these statements is untrue, then the data structure is corrupt.
*/
if( &pReader->aDoclist[pReader->nDoclist]>&pReader->aNode[pReader->nNode]
- || pReader->aDoclist[pReader->nDoclist-1]
+ || (pReader->nPopulate==0 && pReader->aDoclist[pReader->nDoclist-1])
){
- return SQLITE_CORRUPT;
+ return FTS_CORRUPT_VTAB;
}
return SQLITE_OK;
}
@@ -115589,12 +125898,26 @@
** Set the SegReader to point to the first docid in the doclist associated
** with the current term.
*/
-static void fts3SegReaderFirstDocid(Fts3SegReader *pReader){
- int n;
+static int fts3SegReaderFirstDocid(Fts3Table *pTab, Fts3SegReader *pReader){
+ int rc = SQLITE_OK;
assert( pReader->aDoclist );
assert( !pReader->pOffsetList );
- n = sqlite3Fts3GetVarint(pReader->aDoclist, &pReader->iDocid);
- pReader->pOffsetList = &pReader->aDoclist[n];
+ if( pTab->bDescIdx && fts3SegReaderIsPending(pReader) ){
+ u8 bEof = 0;
+ pReader->iDocid = 0;
+ pReader->nOffsetList = 0;
+ sqlite3Fts3DoclistPrev(0,
+ pReader->aDoclist, pReader->nDoclist, &pReader->pOffsetList,
+ &pReader->iDocid, &pReader->nOffsetList, &bEof
+ );
+ }else{
+ rc = fts3SegReaderRequire(pReader, pReader->aDoclist, FTS3_VARINT_MAX);
+ if( rc==SQLITE_OK ){
+ int n = sqlite3Fts3GetVarint(pReader->aDoclist, &pReader->iDocid);
+ pReader->pOffsetList = &pReader->aDoclist[n];
+ }
+ }
+ return rc;
}
/*
@@ -115607,122 +125930,125 @@
** *pnOffsetList is set to the length of the set of column-offset
** lists, not including the nul-terminator byte. For example:
*/
-static void fts3SegReaderNextDocid(
- Fts3SegReader *pReader,
- char **ppOffsetList,
- int *pnOffsetList
+static int fts3SegReaderNextDocid(
+ Fts3Table *pTab,
+ Fts3SegReader *pReader, /* Reader to advance to next docid */
+ char **ppOffsetList, /* OUT: Pointer to current position-list */
+ int *pnOffsetList /* OUT: Length of *ppOffsetList in bytes */
){
+ int rc = SQLITE_OK;
char *p = pReader->pOffsetList;
char c = 0;
- /* Pointer p currently points at the first byte of an offset list. The
- ** following two lines advance it to point one byte past the end of
- ** the same offset list.
- */
- while( *p | c ) c = *p++ & 0x80;
- p++;
+ assert( p );
- /* If required, populate the output variables with a pointer to and the
- ** size of the previous offset-list.
- */
- if( ppOffsetList ){
- *ppOffsetList = pReader->pOffsetList;
- *pnOffsetList = (int)(p - pReader->pOffsetList - 1);
- }
-
- /* If there are no more entries in the doclist, set pOffsetList to
- ** NULL. Otherwise, set Fts3SegReader.iDocid to the next docid and
- ** Fts3SegReader.pOffsetList to point to the next offset list before
- ** returning.
- */
- if( p>=&pReader->aDoclist[pReader->nDoclist] ){
- pReader->pOffsetList = 0;
+ if( pTab->bDescIdx && fts3SegReaderIsPending(pReader) ){
+ /* A pending-terms seg-reader for an FTS4 table that uses order=desc.
+ ** Pending-terms doclists are always built up in ascending order, so
+ ** we have to iterate through them backwards here. */
+ u8 bEof = 0;
+ if( ppOffsetList ){
+ *ppOffsetList = pReader->pOffsetList;
+ *pnOffsetList = pReader->nOffsetList - 1;
+ }
+ sqlite3Fts3DoclistPrev(0,
+ pReader->aDoclist, pReader->nDoclist, &p, &pReader->iDocid,
+ &pReader->nOffsetList, &bEof
+ );
+ if( bEof ){
+ pReader->pOffsetList = 0;
+ }else{
+ pReader->pOffsetList = p;
+ }
}else{
- sqlite3_int64 iDelta;
- pReader->pOffsetList = p + sqlite3Fts3GetVarint(p, &iDelta);
- pReader->iDocid += iDelta;
+ char *pEnd = &pReader->aDoclist[pReader->nDoclist];
+
+ /* Pointer p currently points at the first byte of an offset list. The
+ ** following block advances it to point one byte past the end of
+ ** the same offset list. */
+ while( 1 ){
+
+ /* The following line of code (and the "p++" below the while() loop) is
+ ** normally all that is required to move pointer p to the desired
+ ** position. The exception is if this node is being loaded from disk
+ ** incrementally and pointer "p" now points to the first byte passed
+ ** the populated part of pReader->aNode[].
+ */
+ while( *p | c ) c = *p++ & 0x80;
+ assert( *p==0 );
+
+ if( pReader->pBlob==0 || p<&pReader->aNode[pReader->nPopulate] ) break;
+ rc = fts3SegReaderIncrRead(pReader);
+ if( rc!=SQLITE_OK ) return rc;
+ }
+ p++;
+
+ /* If required, populate the output variables with a pointer to and the
+ ** size of the previous offset-list.
+ */
+ if( ppOffsetList ){
+ *ppOffsetList = pReader->pOffsetList;
+ *pnOffsetList = (int)(p - pReader->pOffsetList - 1);
+ }
+
+ while( p<pEnd && *p==0 ) p++;
+
+ /* If there are no more entries in the doclist, set pOffsetList to
+ ** NULL. Otherwise, set Fts3SegReader.iDocid to the next docid and
+ ** Fts3SegReader.pOffsetList to point to the next offset list before
+ ** returning.
+ */
+ if( p>=pEnd ){
+ pReader->pOffsetList = 0;
+ }else{
+ rc = fts3SegReaderRequire(pReader, p, FTS3_VARINT_MAX);
+ if( rc==SQLITE_OK ){
+ sqlite3_int64 iDelta;
+ pReader->pOffsetList = p + sqlite3Fts3GetVarint(p, &iDelta);
+ if( pTab->bDescIdx ){
+ pReader->iDocid -= iDelta;
+ }else{
+ pReader->iDocid += iDelta;
+ }
+ }
+ }
}
+
+ return SQLITE_OK;
}
-/*
-** This function is called to estimate the amount of data that will be
-** loaded from the disk If SegReaderIterate() is called on this seg-reader,
-** in units of average document size.
-**
-** This can be used as follows: If the caller has a small doclist that
-** contains references to N documents, and is considering merging it with
-** a large doclist (size X "average documents"), it may opt not to load
-** the large doclist if X>N.
-*/
-SQLITE_PRIVATE int sqlite3Fts3SegReaderCost(
- Fts3Cursor *pCsr, /* FTS3 cursor handle */
- Fts3SegReader *pReader, /* Segment-reader handle */
- int *pnCost /* IN/OUT: Number of bytes read */
+
+SQLITE_PRIVATE int sqlite3Fts3MsrOvfl(
+ Fts3Cursor *pCsr,
+ Fts3MultiSegReader *pMsr,
+ int *pnOvfl
){
Fts3Table *p = (Fts3Table*)pCsr->base.pVtab;
- int rc = SQLITE_OK; /* Return code */
- int nCost = 0; /* Cost in bytes to return */
- int pgsz = p->nPgsz; /* Database page size */
+ int nOvfl = 0;
+ int ii;
+ int rc = SQLITE_OK;
+ int pgsz = p->nPgsz;
- /* If this seg-reader is reading the pending-terms table, or if all data
- ** for the segment is stored on the root page of the b-tree, then the cost
- ** is zero. In this case all required data is already in main memory.
- */
- if( p->bHasStat
- && !fts3SegReaderIsPending(pReader)
- && !fts3SegReaderIsRootOnly(pReader)
- ){
- int nBlob = 0;
- sqlite3_int64 iBlock;
+ assert( p->bHasStat );
+ assert( pgsz>0 );
- if( pCsr->nRowAvg==0 ){
- /* The average document size, which is required to calculate the cost
- ** of each doclist, has not yet been determined. Read the required
- ** data from the %_stat table to calculate it.
- **
- ** Entry 0 of the %_stat table is a blob containing (nCol+1) FTS3
- ** varints, where nCol is the number of columns in the FTS3 table.
- ** The first varint is the number of documents currently stored in
- ** the table. The following nCol varints contain the total amount of
- ** data stored in all rows of each column of the table, from left
- ** to right.
- */
- sqlite3_stmt *pStmt;
- rc = fts3SqlStmt(p, SQL_SELECT_DOCTOTAL, &pStmt, 0);
- if( rc ) return rc;
- if( sqlite3_step(pStmt)==SQLITE_ROW ){
- sqlite3_int64 nDoc = 0;
- sqlite3_int64 nByte = 0;
- const char *a = sqlite3_column_blob(pStmt, 0);
- if( a ){
- const char *pEnd = &a[sqlite3_column_bytes(pStmt, 0)];
- a += sqlite3Fts3GetVarint(a, &nDoc);
- while( a<pEnd ){
- a += sqlite3Fts3GetVarint(a, &nByte);
- }
+ for(ii=0; rc==SQLITE_OK && ii<pMsr->nSegment; ii++){
+ Fts3SegReader *pReader = pMsr->apSegment[ii];
+ if( !fts3SegReaderIsPending(pReader)
+ && !fts3SegReaderIsRootOnly(pReader)
+ ){
+ sqlite3_int64 jj;
+ for(jj=pReader->iStartBlock; jj<=pReader->iLeafEndBlock; jj++){
+ int nBlob;
+ rc = sqlite3Fts3ReadBlock(p, jj, 0, &nBlob, 0);
+ if( rc!=SQLITE_OK ) break;
+ if( (nBlob+35)>pgsz ){
+ nOvfl += (nBlob + 34)/pgsz;
}
-
- pCsr->nRowAvg = (int)(((nByte / nDoc) + pgsz - 1) / pgsz);
- }
- rc = sqlite3_reset(pStmt);
- if( rc!=SQLITE_OK || pCsr->nRowAvg==0 ) return rc;
- }
-
- /* Assume that a blob flows over onto overflow pages if it is larger
- ** than (pgsz-35) bytes in size (the file-format documentation
- ** confirms this).
- */
- for(iBlock=pReader->iStartBlock; iBlock<=pReader->iLeafEndBlock; iBlock++){
- rc = sqlite3Fts3ReadBlock(p, iBlock, 0, &nBlob);
- if( rc!=SQLITE_OK ) break;
- if( (nBlob+35)>pgsz ){
- int nOvfl = (nBlob + 34)/pgsz;
- nCost += ((nOvfl + pCsr->nRowAvg - 1)/pCsr->nRowAvg);
}
}
}
-
- *pnCost += nCost;
+ *pnOvfl = nOvfl;
return rc;
}
@@ -115735,6 +126061,7 @@
sqlite3_free(pReader->zTerm);
if( !fts3SegReaderIsRootOnly(pReader) ){
sqlite3_free(pReader->aNode);
+ sqlite3_blob_close(pReader->pBlob);
}
}
sqlite3_free(pReader);
@@ -115752,7 +126079,6 @@
int nRoot, /* Size of buffer containing root node */
Fts3SegReader **ppReader /* OUT: Allocated Fts3SegReader */
){
- int rc = SQLITE_OK; /* Return code */
Fts3SegReader *pReader; /* Newly allocated SegReader object */
int nExtra = 0; /* Bytes to allocate segment root node */
@@ -115780,13 +126106,8 @@
}else{
pReader->iCurrentBlock = iStartLeaf-1;
}
-
- if( rc==SQLITE_OK ){
- *ppReader = pReader;
- }else{
- sqlite3Fts3SegReaderFree(pReader);
- }
- return rc;
+ *ppReader = pReader;
+ return SQLITE_OK;
}
/*
@@ -115811,24 +126132,42 @@
/*
** This function is used to allocate an Fts3SegReader that iterates through
** a subset of the terms stored in the Fts3Table.pendingTerms array.
+**
+** If the isPrefixIter parameter is zero, then the returned SegReader iterates
+** through each term in the pending-terms table. Or, if isPrefixIter is
+** non-zero, it iterates through each term and its prefixes. For example, if
+** the pending terms hash table contains the terms "sqlite", "mysql" and
+** "firebird", then the iterator visits the following 'terms' (in the order
+** shown):
+**
+** f fi fir fire fireb firebi firebir firebird
+** m my mys mysq mysql
+** s sq sql sqli sqlit sqlite
+**
+** Whereas if isPrefixIter is zero, the terms visited are:
+**
+** firebird mysql sqlite
*/
SQLITE_PRIVATE int sqlite3Fts3SegReaderPending(
Fts3Table *p, /* Virtual table handle */
+ int iIndex, /* Index for p->aIndex */
const char *zTerm, /* Term to search for */
int nTerm, /* Size of buffer zTerm */
- int isPrefix, /* True for a term-prefix query */
+ int bPrefix, /* True for a prefix iterator */
Fts3SegReader **ppReader /* OUT: SegReader for pending-terms */
){
Fts3SegReader *pReader = 0; /* Fts3SegReader object to return */
+ Fts3HashElem *pE; /* Iterator variable */
Fts3HashElem **aElem = 0; /* Array of term hash entries to scan */
int nElem = 0; /* Size of array at aElem */
int rc = SQLITE_OK; /* Return Code */
+ Fts3Hash *pHash;
- if( isPrefix ){
+ pHash = &p->aIndex[iIndex].hPending;
+ if( bPrefix ){
int nAlloc = 0; /* Size of allocated array at aElem */
- Fts3HashElem *pE = 0; /* Iterator variable */
- for(pE=fts3HashFirst(&p->pendingTerms); pE; pE=fts3HashNext(pE)){
+ for(pE=fts3HashFirst(pHash); pE; pE=fts3HashNext(pE)){
char *zKey = (char *)fts3HashKey(pE);
int nKey = fts3HashKeysize(pE);
if( nTerm==0 || (nKey>=nTerm && 0==memcmp(zKey, zTerm, nTerm)) ){
@@ -115845,6 +126184,7 @@
}
aElem = aElem2;
}
+
aElem[nElem++] = pE;
}
}
@@ -115858,7 +126198,14 @@
}
}else{
- Fts3HashElem *pE = fts3HashFindElem(&p->pendingTerms, zTerm, nTerm);
+ /* The query is a simple term lookup that matches at most one term in
+ ** the index. All that is required is a straight hash-lookup.
+ **
+ ** Because the stack address of pE may be accessed via the aElem pointer
+ ** below, the "Fts3HashElem *pE" must be declared so that it is valid
+ ** within this entire function, not just this "else{...}" block.
+ */
+ pE = fts3HashFindElem(pHash, zTerm, nTerm);
if( pE ){
aElem = &pE;
nElem = 1;
@@ -115878,49 +126225,13 @@
}
}
- if( isPrefix ){
+ if( bPrefix ){
sqlite3_free(aElem);
}
*ppReader = pReader;
return rc;
}
-
-/*
-** The second argument to this function is expected to be a statement of
-** the form:
-**
-** SELECT
-** idx, -- col 0
-** start_block, -- col 1
-** leaves_end_block, -- col 2
-** end_block, -- col 3
-** root -- col 4
-** FROM %_segdir ...
-**
-** This function allocates and initializes a Fts3SegReader structure to
-** iterate through the terms stored in the segment identified by the
-** current row that pStmt is pointing to.
-**
-** If successful, the Fts3SegReader is left pointing to the first term
-** in the segment and SQLITE_OK is returned. Otherwise, an SQLite error
-** code is returned.
-*/
-static int fts3SegReaderNew(
- sqlite3_stmt *pStmt, /* See above */
- int iAge, /* Segment "age". */
- Fts3SegReader **ppReader /* OUT: Allocated Fts3SegReader */
-){
- return sqlite3Fts3SegReaderNew(iAge,
- sqlite3_column_int64(pStmt, 1),
- sqlite3_column_int64(pStmt, 2),
- sqlite3_column_int64(pStmt, 3),
- sqlite3_column_blob(pStmt, 4),
- sqlite3_column_bytes(pStmt, 4),
- ppReader
- );
-}
-
/*
** Compare the entries pointed to by two Fts3SegReader structures.
** Comparison is as follows:
@@ -115978,6 +126289,18 @@
assert( pLhs->aNode && pRhs->aNode );
return rc;
}
+static int fts3SegReaderDoclistCmpRev(Fts3SegReader *pLhs, Fts3SegReader *pRhs){
+ int rc = (pLhs->pOffsetList==0)-(pRhs->pOffsetList==0);
+ if( rc==0 ){
+ if( pLhs->iDocid==pRhs->iDocid ){
+ rc = pRhs->iIdx - pLhs->iIdx;
+ }else{
+ rc = (pLhs->iDocid < pRhs->iDocid) ? 1 : -1;
+ }
+ }
+ assert( pLhs->aNode && pRhs->aNode );
+ return rc;
+}
/*
** Compare the term that the Fts3SegReader object passed as the first argument
@@ -116506,60 +126829,56 @@
** The first value in the apVal[] array is assumed to contain an integer.
** This function tests if there exist any documents with docid values that
** are different from that integer. i.e. if deleting the document with docid
-** apVal[0] would mean the FTS3 table were empty.
+** pRowid would mean the FTS3 table were empty.
**
** If successful, *pisEmpty is set to true if the table is empty except for
-** document apVal[0], or false otherwise, and SQLITE_OK is returned. If an
+** document pRowid, or false otherwise, and SQLITE_OK is returned. If an
** error occurs, an SQLite error code is returned.
*/
-static int fts3IsEmpty(Fts3Table *p, sqlite3_value **apVal, int *pisEmpty){
+static int fts3IsEmpty(Fts3Table *p, sqlite3_value *pRowid, int *pisEmpty){
sqlite3_stmt *pStmt;
int rc;
- rc = fts3SqlStmt(p, SQL_IS_EMPTY, &pStmt, apVal);
- if( rc==SQLITE_OK ){
- if( SQLITE_ROW==sqlite3_step(pStmt) ){
- *pisEmpty = sqlite3_column_int(pStmt, 0);
+ if( p->zContentTbl ){
+ /* If using the content=xxx option, assume the table is never empty */
+ *pisEmpty = 0;
+ rc = SQLITE_OK;
+ }else{
+ rc = fts3SqlStmt(p, SQL_IS_EMPTY, &pStmt, &pRowid);
+ if( rc==SQLITE_OK ){
+ if( SQLITE_ROW==sqlite3_step(pStmt) ){
+ *pisEmpty = sqlite3_column_int(pStmt, 0);
+ }
+ rc = sqlite3_reset(pStmt);
}
- rc = sqlite3_reset(pStmt);
}
return rc;
}
/*
-** Set *pnSegment to the number of segments of level iLevel in the database.
+** Set *pnMax to the largest segment level in the database for the index
+** iIndex.
+**
+** Segment levels are stored in the 'level' column of the %_segdir table.
**
** Return SQLITE_OK if successful, or an SQLite error code if not.
*/
-static int fts3SegmentCount(Fts3Table *p, int iLevel, int *pnSegment){
+static int fts3SegmentMaxLevel(Fts3Table *p, int iIndex, int *pnMax){
sqlite3_stmt *pStmt;
int rc;
+ assert( iIndex>=0 && iIndex<p->nIndex );
- assert( iLevel>=0 );
- rc = fts3SqlStmt(p, SQL_SELECT_LEVEL_COUNT, &pStmt, 0);
+ /* Set pStmt to the compiled version of:
+ **
+ ** SELECT max(level) FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ?
+ **
+ ** (1024 is actually the value of macro FTS3_SEGDIR_PREFIXLEVEL_STR).
+ */
+ rc = fts3SqlStmt(p, SQL_SELECT_SEGDIR_MAX_LEVEL, &pStmt, 0);
if( rc!=SQLITE_OK ) return rc;
- sqlite3_bind_int(pStmt, 1, iLevel);
+ sqlite3_bind_int(pStmt, 1, iIndex*FTS3_SEGDIR_MAXLEVEL);
+ sqlite3_bind_int(pStmt, 2, (iIndex+1)*FTS3_SEGDIR_MAXLEVEL - 1);
if( SQLITE_ROW==sqlite3_step(pStmt) ){
- *pnSegment = sqlite3_column_int(pStmt, 0);
- }
- return sqlite3_reset(pStmt);
-}
-
-/*
-** Set *pnSegment to the total number of segments in the database. Set
-** *pnMax to the largest segment level in the database (segment levels
-** are stored in the 'level' column of the %_segdir table).
-**
-** Return SQLITE_OK if successful, or an SQLite error code if not.
-*/
-static int fts3SegmentCountMax(Fts3Table *p, int *pnSegment, int *pnMax){
- sqlite3_stmt *pStmt;
- int rc;
-
- rc = fts3SqlStmt(p, SQL_SELECT_SEGDIR_COUNT_MAX, &pStmt, 0);
- if( rc!=SQLITE_OK ) return rc;
- if( SQLITE_ROW==sqlite3_step(pStmt) ){
- *pnSegment = sqlite3_column_int(pStmt, 0);
- *pnMax = sqlite3_column_int(pStmt, 1);
+ *pnMax = sqlite3_column_int(pStmt, 0);
}
return sqlite3_reset(pStmt);
}
@@ -116580,6 +126899,7 @@
*/
static int fts3DeleteSegdir(
Fts3Table *p, /* Virtual table handle */
+ int iIndex, /* Index for p->aIndex */
int iLevel, /* Level of %_segdir entries to delete */
Fts3SegReader **apSegment, /* Array of SegReader objects */
int nReader /* Size of array apSegment */
@@ -116602,15 +126922,23 @@
return rc;
}
- if( iLevel>=0 ){
- rc = fts3SqlStmt(p, SQL_DELETE_SEGDIR_BY_LEVEL, &pDelete, 0);
+ assert( iLevel>=0 || iLevel==FTS3_SEGCURSOR_ALL );
+ if( iLevel==FTS3_SEGCURSOR_ALL ){
+ rc = fts3SqlStmt(p, SQL_DELETE_SEGDIR_RANGE, &pDelete, 0);
if( rc==SQLITE_OK ){
- sqlite3_bind_int(pDelete, 1, iLevel);
- sqlite3_step(pDelete);
- rc = sqlite3_reset(pDelete);
+ sqlite3_bind_int(pDelete, 1, iIndex*FTS3_SEGDIR_MAXLEVEL);
+ sqlite3_bind_int(pDelete, 2, (iIndex+1) * FTS3_SEGDIR_MAXLEVEL - 1);
}
}else{
- fts3SqlExec(&rc, p, SQL_DELETE_ALL_SEGDIR, 0);
+ rc = fts3SqlStmt(p, SQL_DELETE_SEGDIR_LEVEL, &pDelete, 0);
+ if( rc==SQLITE_OK ){
+ sqlite3_bind_int(pDelete, 1, iIndex*FTS3_SEGDIR_MAXLEVEL + iLevel);
+ }
+ }
+
+ if( rc==SQLITE_OK ){
+ sqlite3_step(pDelete);
+ rc = sqlite3_reset(pDelete);
}
return rc;
@@ -116660,84 +126988,105 @@
}
/*
-** sqlite3Fts3SegReaderIterate() callback used when merging multiple
-** segments to create a single, larger segment.
+** Cache data in the Fts3MultiSegReader.aBuffer[] buffer (overwriting any
+** existing data). Grow the buffer if required.
+**
+** If successful, return SQLITE_OK. Otherwise, if an OOM error is encountered
+** trying to resize the buffer, return SQLITE_NOMEM.
*/
-static int fts3MergeCallback(
- Fts3Table *p, /* FTS3 Virtual table handle */
- void *pContext, /* Pointer to SegmentWriter* to write with */
- char *zTerm, /* Term to write to the db */
- int nTerm, /* Number of bytes in zTerm */
- char *aDoclist, /* Doclist associated with zTerm */
- int nDoclist /* Number of bytes in doclist */
+static int fts3MsrBufferData(
+ Fts3MultiSegReader *pMsr, /* Multi-segment-reader handle */
+ char *pList,
+ int nList
){
- SegmentWriter **ppW = (SegmentWriter **)pContext;
- return fts3SegWriterAdd(p, ppW, 1, zTerm, nTerm, aDoclist, nDoclist);
+ if( nList>pMsr->nBuffer ){
+ char *pNew;
+ pMsr->nBuffer = nList*2;
+ pNew = (char *)sqlite3_realloc(pMsr->aBuffer, pMsr->nBuffer);
+ if( !pNew ) return SQLITE_NOMEM;
+ pMsr->aBuffer = pNew;
+ }
+
+ memcpy(pMsr->aBuffer, pList, nList);
+ return SQLITE_OK;
}
-/*
-** sqlite3Fts3SegReaderIterate() callback used when flushing the contents
-** of the pending-terms hash table to the database.
-*/
-static int fts3FlushCallback(
- Fts3Table *p, /* FTS3 Virtual table handle */
- void *pContext, /* Pointer to SegmentWriter* to write with */
- char *zTerm, /* Term to write to the db */
- int nTerm, /* Number of bytes in zTerm */
- char *aDoclist, /* Doclist associated with zTerm */
- int nDoclist /* Number of bytes in doclist */
-){
- SegmentWriter **ppW = (SegmentWriter **)pContext;
- return fts3SegWriterAdd(p, ppW, 0, zTerm, nTerm, aDoclist, nDoclist);
-}
-
-/*
-** This function is used to iterate through a contiguous set of terms
-** stored in the full-text index. It merges data contained in one or
-** more segments to support this.
-**
-** The second argument is passed an array of pointers to SegReader objects
-** allocated with sqlite3Fts3SegReaderNew(). This function merges the range
-** of terms selected by each SegReader. If a single term is present in
-** more than one segment, the associated doclists are merged. For each
-** term and (possibly merged) doclist in the merged range, the callback
-** function xFunc is invoked with its arguments set as follows.
-**
-** arg 0: Copy of 'p' parameter passed to this function
-** arg 1: Copy of 'pContext' parameter passed to this function
-** arg 2: Pointer to buffer containing term
-** arg 3: Size of arg 2 buffer in bytes
-** arg 4: Pointer to buffer containing doclist
-** arg 5: Size of arg 2 buffer in bytes
-**
-** The 4th argument to this function is a pointer to a structure of type
-** Fts3SegFilter, defined in fts3Int.h. The contents of this structure
-** further restrict the range of terms that callbacks are made for and
-** modify the behaviour of this function. See comments above structure
-** definition for details.
-*/
-SQLITE_PRIVATE int sqlite3Fts3SegReaderIterate(
+SQLITE_PRIVATE int sqlite3Fts3MsrIncrNext(
Fts3Table *p, /* Virtual table handle */
- Fts3SegReader **apSegment, /* Array of Fts3SegReader objects */
- int nSegment, /* Size of apSegment array */
- Fts3SegFilter *pFilter, /* Restrictions on range of iteration */
- int (*xFunc)(Fts3Table *, void *, char *, int, char *, int), /* Callback */
- void *pContext /* Callback context (2nd argument) */
+ Fts3MultiSegReader *pMsr, /* Multi-segment-reader handle */
+ sqlite3_int64 *piDocid, /* OUT: Docid value */
+ char **paPoslist, /* OUT: Pointer to position list */
+ int *pnPoslist /* OUT: Size of position list in bytes */
){
- int i; /* Iterator variable */
- char *aBuffer = 0; /* Buffer to merge doclists in */
- int nAlloc = 0; /* Allocated size of aBuffer buffer */
- int rc = SQLITE_OK; /* Return code */
+ int nMerge = pMsr->nAdvance;
+ Fts3SegReader **apSegment = pMsr->apSegment;
+ int (*xCmp)(Fts3SegReader *, Fts3SegReader *) = (
+ p->bDescIdx ? fts3SegReaderDoclistCmpRev : fts3SegReaderDoclistCmp
+ );
- int isIgnoreEmpty = (pFilter->flags & FTS3_SEGMENT_IGNORE_EMPTY);
- int isRequirePos = (pFilter->flags & FTS3_SEGMENT_REQUIRE_POS);
- int isColFilter = (pFilter->flags & FTS3_SEGMENT_COLUMN_FILTER);
- int isPrefix = (pFilter->flags & FTS3_SEGMENT_PREFIX);
+ if( nMerge==0 ){
+ *paPoslist = 0;
+ return SQLITE_OK;
+ }
- /* If there are zero segments, this function is a no-op. This scenario
- ** comes about only when reading from an empty database.
- */
- if( nSegment==0 ) goto finished;
+ while( 1 ){
+ Fts3SegReader *pSeg;
+ pSeg = pMsr->apSegment[0];
+
+ if( pSeg->pOffsetList==0 ){
+ *paPoslist = 0;
+ break;
+ }else{
+ int rc;
+ char *pList;
+ int nList;
+ int j;
+ sqlite3_int64 iDocid = apSegment[0]->iDocid;
+
+ rc = fts3SegReaderNextDocid(p, apSegment[0], &pList, &nList);
+ j = 1;
+ while( rc==SQLITE_OK
+ && j<nMerge
+ && apSegment[j]->pOffsetList
+ && apSegment[j]->iDocid==iDocid
+ ){
+ rc = fts3SegReaderNextDocid(p, apSegment[j], 0, 0);
+ j++;
+ }
+ if( rc!=SQLITE_OK ) return rc;
+ fts3SegReaderSort(pMsr->apSegment, nMerge, j, xCmp);
+
+ if( pMsr->iColFilter>=0 ){
+ fts3ColumnFilter(pMsr->iColFilter, &pList, &nList);
+ }
+
+ if( nList>0 ){
+ if( fts3SegReaderIsPending(apSegment[0]) ){
+ rc = fts3MsrBufferData(pMsr, pList, nList+1);
+ if( rc!=SQLITE_OK ) return rc;
+ *paPoslist = pMsr->aBuffer;
+ assert( (pMsr->aBuffer[nList] & 0xFE)==0x00 );
+ }else{
+ *paPoslist = pList;
+ }
+ *piDocid = iDocid;
+ *pnPoslist = nList;
+ break;
+ }
+ }
+ }
+
+ return SQLITE_OK;
+}
+
+static int fts3SegReaderStart(
+ Fts3Table *p, /* Virtual table handle */
+ Fts3MultiSegReader *pCsr, /* Cursor object */
+ const char *zTerm, /* Term searched for (or NULL) */
+ int nTerm /* Length of zTerm in bytes */
+){
+ int i;
+ int nSeg = pCsr->nSegment;
/* If the Fts3SegFilter defines a specific term (or term prefix) to search
** for, then advance each segment iterator until it points to a term of
@@ -116745,21 +127094,144 @@
** unnecessary merge/sort operations for the case where single segment
** b-tree leaf nodes contain more than one term.
*/
- for(i=0; i<nSegment; i++){
- int nTerm = pFilter->nTerm;
- const char *zTerm = pFilter->zTerm;
- Fts3SegReader *pSeg = apSegment[i];
+ for(i=0; pCsr->bRestart==0 && i<pCsr->nSegment; i++){
+ Fts3SegReader *pSeg = pCsr->apSegment[i];
do {
- rc = fts3SegReaderNext(p, pSeg);
- if( rc!=SQLITE_OK ) goto finished;
+ int rc = fts3SegReaderNext(p, pSeg, 0);
+ if( rc!=SQLITE_OK ) return rc;
}while( zTerm && fts3SegReaderTermCmp(pSeg, zTerm, nTerm)<0 );
}
+ fts3SegReaderSort(pCsr->apSegment, nSeg, nSeg, fts3SegReaderCmp);
- fts3SegReaderSort(apSegment, nSegment, nSegment, fts3SegReaderCmp);
- while( apSegment[0]->aNode ){
- int nTerm = apSegment[0]->nTerm;
- char *zTerm = apSegment[0]->zTerm;
- int nMerge = 1;
+ return SQLITE_OK;
+}
+
+SQLITE_PRIVATE int sqlite3Fts3SegReaderStart(
+ Fts3Table *p, /* Virtual table handle */
+ Fts3MultiSegReader *pCsr, /* Cursor object */
+ Fts3SegFilter *pFilter /* Restrictions on range of iteration */
+){
+ pCsr->pFilter = pFilter;
+ return fts3SegReaderStart(p, pCsr, pFilter->zTerm, pFilter->nTerm);
+}
+
+SQLITE_PRIVATE int sqlite3Fts3MsrIncrStart(
+ Fts3Table *p, /* Virtual table handle */
+ Fts3MultiSegReader *pCsr, /* Cursor object */
+ int iCol, /* Column to match on. */
+ const char *zTerm, /* Term to iterate through a doclist for */
+ int nTerm /* Number of bytes in zTerm */
+){
+ int i;
+ int rc;
+ int nSegment = pCsr->nSegment;
+ int (*xCmp)(Fts3SegReader *, Fts3SegReader *) = (
+ p->bDescIdx ? fts3SegReaderDoclistCmpRev : fts3SegReaderDoclistCmp
+ );
+
+ assert( pCsr->pFilter==0 );
+ assert( zTerm && nTerm>0 );
+
+ /* Advance each segment iterator until it points to the term zTerm/nTerm. */
+ rc = fts3SegReaderStart(p, pCsr, zTerm, nTerm);
+ if( rc!=SQLITE_OK ) return rc;
+
+ /* Determine how many of the segments actually point to zTerm/nTerm. */
+ for(i=0; i<nSegment; i++){
+ Fts3SegReader *pSeg = pCsr->apSegment[i];
+ if( !pSeg->aNode || fts3SegReaderTermCmp(pSeg, zTerm, nTerm) ){
+ break;
+ }
+ }
+ pCsr->nAdvance = i;
+
+ /* Advance each of the segments to point to the first docid. */
+ for(i=0; i<pCsr->nAdvance; i++){
+ rc = fts3SegReaderFirstDocid(p, pCsr->apSegment[i]);
+ if( rc!=SQLITE_OK ) return rc;
+ }
+ fts3SegReaderSort(pCsr->apSegment, i, i, xCmp);
+
+ assert( iCol<0 || iCol<p->nColumn );
+ pCsr->iColFilter = iCol;
+
+ return SQLITE_OK;
+}
+
+/*
+** This function is called on a MultiSegReader that has been started using
+** sqlite3Fts3MsrIncrStart(). One or more calls to MsrIncrNext() may also
+** have been made. Calling this function puts the MultiSegReader in such
+** a state that if the next two calls are:
+**
+** sqlite3Fts3SegReaderStart()
+** sqlite3Fts3SegReaderStep()
+**
+** then the entire doclist for the term is available in
+** MultiSegReader.aDoclist/nDoclist.
+*/
+SQLITE_PRIVATE int sqlite3Fts3MsrIncrRestart(Fts3MultiSegReader *pCsr){
+ int i; /* Used to iterate through segment-readers */
+
+ assert( pCsr->zTerm==0 );
+ assert( pCsr->nTerm==0 );
+ assert( pCsr->aDoclist==0 );
+ assert( pCsr->nDoclist==0 );
+
+ pCsr->nAdvance = 0;
+ pCsr->bRestart = 1;
+ for(i=0; i<pCsr->nSegment; i++){
+ pCsr->apSegment[i]->pOffsetList = 0;
+ pCsr->apSegment[i]->nOffsetList = 0;
+ pCsr->apSegment[i]->iDocid = 0;
+ }
+
+ return SQLITE_OK;
+}
+
+
+SQLITE_PRIVATE int sqlite3Fts3SegReaderStep(
+ Fts3Table *p, /* Virtual table handle */
+ Fts3MultiSegReader *pCsr /* Cursor object */
+){
+ int rc = SQLITE_OK;
+
+ int isIgnoreEmpty = (pCsr->pFilter->flags & FTS3_SEGMENT_IGNORE_EMPTY);
+ int isRequirePos = (pCsr->pFilter->flags & FTS3_SEGMENT_REQUIRE_POS);
+ int isColFilter = (pCsr->pFilter->flags & FTS3_SEGMENT_COLUMN_FILTER);
+ int isPrefix = (pCsr->pFilter->flags & FTS3_SEGMENT_PREFIX);
+ int isScan = (pCsr->pFilter->flags & FTS3_SEGMENT_SCAN);
+ int isFirst = (pCsr->pFilter->flags & FTS3_SEGMENT_FIRST);
+
+ Fts3SegReader **apSegment = pCsr->apSegment;
+ int nSegment = pCsr->nSegment;
+ Fts3SegFilter *pFilter = pCsr->pFilter;
+ int (*xCmp)(Fts3SegReader *, Fts3SegReader *) = (
+ p->bDescIdx ? fts3SegReaderDoclistCmpRev : fts3SegReaderDoclistCmp
+ );
+
+ if( pCsr->nSegment==0 ) return SQLITE_OK;
+
+ do {
+ int nMerge;
+ int i;
+
+ /* Advance the first pCsr->nAdvance entries in the apSegment[] array
+ ** forward. Then sort the list in order of current term again.
+ */
+ for(i=0; i<pCsr->nAdvance; i++){
+ rc = fts3SegReaderNext(p, apSegment[i], 0);
+ if( rc!=SQLITE_OK ) return rc;
+ }
+ fts3SegReaderSort(apSegment, nSegment, pCsr->nAdvance, fts3SegReaderCmp);
+ pCsr->nAdvance = 0;
+
+ /* If all the seg-readers are at EOF, we're finished. return SQLITE_OK. */
+ assert( rc==SQLITE_OK );
+ if( apSegment[0]->aNode==0 ) break;
+
+ pCsr->nTerm = apSegment[0]->nTerm;
+ pCsr->zTerm = apSegment[0]->zTerm;
/* If this is a prefix-search, and if the term that apSegment[0] points
** to does not share a suffix with pFilter->zTerm/nTerm, then all
@@ -116768,53 +127240,63 @@
** Similarly, if this is a search for an exact match, and the first term
** of segment apSegment[0] is not a match, exit early.
*/
- if( pFilter->zTerm ){
- if( nTerm<pFilter->nTerm
- || (!isPrefix && nTerm>pFilter->nTerm)
- || memcmp(zTerm, pFilter->zTerm, pFilter->nTerm)
- ){
- goto finished;
+ if( pFilter->zTerm && !isScan ){
+ if( pCsr->nTerm<pFilter->nTerm
+ || (!isPrefix && pCsr->nTerm>pFilter->nTerm)
+ || memcmp(pCsr->zTerm, pFilter->zTerm, pFilter->nTerm)
+ ){
+ break;
}
}
+ nMerge = 1;
while( nMerge<nSegment
&& apSegment[nMerge]->aNode
- && apSegment[nMerge]->nTerm==nTerm
- && 0==memcmp(zTerm, apSegment[nMerge]->zTerm, nTerm)
+ && apSegment[nMerge]->nTerm==pCsr->nTerm
+ && 0==memcmp(pCsr->zTerm, apSegment[nMerge]->zTerm, pCsr->nTerm)
){
nMerge++;
}
assert( isIgnoreEmpty || (isRequirePos && !isColFilter) );
- if( nMerge==1 && !isIgnoreEmpty ){
- Fts3SegReader *p0 = apSegment[0];
- rc = xFunc(p, pContext, zTerm, nTerm, p0->aDoclist, p0->nDoclist);
- if( rc!=SQLITE_OK ) goto finished;
+ if( nMerge==1
+ && !isIgnoreEmpty
+ && !isFirst
+ && (p->bDescIdx==0 || fts3SegReaderIsPending(apSegment[0])==0)
+ ){
+ pCsr->nDoclist = apSegment[0]->nDoclist;
+ if( fts3SegReaderIsPending(apSegment[0]) ){
+ rc = fts3MsrBufferData(pCsr, apSegment[0]->aDoclist, pCsr->nDoclist);
+ pCsr->aDoclist = pCsr->aBuffer;
+ }else{
+ pCsr->aDoclist = apSegment[0]->aDoclist;
+ }
+ if( rc==SQLITE_OK ) rc = SQLITE_ROW;
}else{
int nDoclist = 0; /* Size of doclist */
sqlite3_int64 iPrev = 0; /* Previous docid stored in doclist */
/* The current term of the first nMerge entries in the array
** of Fts3SegReader objects is the same. The doclists must be merged
- ** and a single term added to the new segment.
+ ** and a single term returned with the merged doclist.
*/
for(i=0; i<nMerge; i++){
- fts3SegReaderFirstDocid(apSegment[i]);
+ fts3SegReaderFirstDocid(p, apSegment[i]);
}
- fts3SegReaderSort(apSegment, nMerge, nMerge, fts3SegReaderDoclistCmp);
+ fts3SegReaderSort(apSegment, nMerge, nMerge, xCmp);
while( apSegment[0]->pOffsetList ){
int j; /* Number of segments that share a docid */
char *pList;
int nList;
int nByte;
sqlite3_int64 iDocid = apSegment[0]->iDocid;
- fts3SegReaderNextDocid(apSegment[0], &pList, &nList);
+ fts3SegReaderNextDocid(p, apSegment[0], &pList, &nList);
j = 1;
while( j<nMerge
&& apSegment[j]->pOffsetList
&& apSegment[j]->iDocid==iDocid
){
- fts3SegReaderNextDocid(apSegment[j], 0, 0);
+ fts3SegReaderNextDocid(p, apSegment[j], 0, 0);
j++;
}
@@ -116823,55 +127305,81 @@
}
if( !isIgnoreEmpty || nList>0 ){
- nByte = sqlite3Fts3VarintLen(iDocid-iPrev) + (isRequirePos?nList+1:0);
- if( nDoclist+nByte>nAlloc ){
- char *aNew;
- nAlloc = nDoclist+nByte*2;
- aNew = sqlite3_realloc(aBuffer, nAlloc);
- if( !aNew ){
- rc = SQLITE_NOMEM;
- goto finished;
- }
- aBuffer = aNew;
+
+ /* Calculate the 'docid' delta value to write into the merged
+ ** doclist. */
+ sqlite3_int64 iDelta;
+ if( p->bDescIdx && nDoclist>0 ){
+ iDelta = iPrev - iDocid;
+ }else{
+ iDelta = iDocid - iPrev;
}
- nDoclist += sqlite3Fts3PutVarint(&aBuffer[nDoclist], iDocid-iPrev);
- iPrev = iDocid;
- if( isRequirePos ){
- memcpy(&aBuffer[nDoclist], pList, nList);
- nDoclist += nList;
- aBuffer[nDoclist++] = '\0';
+ assert( iDelta>0 || (nDoclist==0 && iDelta==iDocid) );
+ assert( nDoclist>0 || iDelta==iDocid );
+
+ nByte = sqlite3Fts3VarintLen(iDelta) + (isRequirePos?nList+1:0);
+ if( nDoclist+nByte>pCsr->nBuffer ){
+ char *aNew;
+ pCsr->nBuffer = (nDoclist+nByte)*2;
+ aNew = sqlite3_realloc(pCsr->aBuffer, pCsr->nBuffer);
+ if( !aNew ){
+ return SQLITE_NOMEM;
+ }
+ pCsr->aBuffer = aNew;
+ }
+
+ if( isFirst ){
+ char *a = &pCsr->aBuffer[nDoclist];
+ int nWrite;
+
+ nWrite = sqlite3Fts3FirstFilter(iDelta, pList, nList, a);
+ if( nWrite ){
+ iPrev = iDocid;
+ nDoclist += nWrite;
+ }
+ }else{
+ nDoclist += sqlite3Fts3PutVarint(&pCsr->aBuffer[nDoclist], iDelta);
+ iPrev = iDocid;
+ if( isRequirePos ){
+ memcpy(&pCsr->aBuffer[nDoclist], pList, nList);
+ nDoclist += nList;
+ pCsr->aBuffer[nDoclist++] = '\0';
+ }
}
}
- fts3SegReaderSort(apSegment, nMerge, j, fts3SegReaderDoclistCmp);
+ fts3SegReaderSort(apSegment, nMerge, j, xCmp);
}
-
if( nDoclist>0 ){
- rc = xFunc(p, pContext, zTerm, nTerm, aBuffer, nDoclist);
- if( rc!=SQLITE_OK ) goto finished;
+ pCsr->aDoclist = pCsr->aBuffer;
+ pCsr->nDoclist = nDoclist;
+ rc = SQLITE_ROW;
}
}
+ pCsr->nAdvance = nMerge;
+ }while( rc==SQLITE_OK );
- /* If there is a term specified to filter on, and this is not a prefix
- ** search, return now. The callback that corresponds to the required
- ** term (if such a term exists in the index) has already been made.
- */
- if( pFilter->zTerm && !isPrefix ){
- goto finished;
- }
-
- for(i=0; i<nMerge; i++){
- rc = fts3SegReaderNext(p, apSegment[i]);
- if( rc!=SQLITE_OK ) goto finished;
- }
- fts3SegReaderSort(apSegment, nSegment, nMerge, fts3SegReaderCmp);
- }
-
- finished:
- sqlite3_free(aBuffer);
return rc;
}
+
+SQLITE_PRIVATE void sqlite3Fts3SegReaderFinish(
+ Fts3MultiSegReader *pCsr /* Cursor object */
+){
+ if( pCsr ){
+ int i;
+ for(i=0; i<pCsr->nSegment; i++){
+ sqlite3Fts3SegReaderFree(pCsr->apSegment[i]);
+ }
+ sqlite3_free(pCsr->apSegment);
+ sqlite3_free(pCsr->aBuffer);
+
+ pCsr->nSegment = 0;
+ pCsr->apSegment = 0;
+ pCsr->aBuffer = 0;
+ }
+}
+
/*
** Merge all level iLevel segments in the database into a single
** iLevel+1 segment. Or, if iLevel<0, merge all segments into a
@@ -116883,157 +127391,91 @@
** Otherwise, if successful, SQLITE_OK is returned. If an error occurs,
** an SQLite error code is returned.
*/
-static int fts3SegmentMerge(Fts3Table *p, int iLevel){
- int i; /* Iterator variable */
+static int fts3SegmentMerge(Fts3Table *p, int iIndex, int iLevel){
int rc; /* Return code */
- int iIdx; /* Index of new segment */
- int iNewLevel = 0; /* Level to create new segment at */
- sqlite3_stmt *pStmt = 0;
- SegmentWriter *pWriter = 0;
- int nSegment = 0; /* Number of segments being merged */
- Fts3SegReader **apSegment = 0; /* Array of Segment iterators */
- Fts3SegReader *pPending = 0; /* Iterator for pending-terms */
+ int iIdx = 0; /* Index of new segment */
+ int iNewLevel = 0; /* Level/index to create new segment at */
+ SegmentWriter *pWriter = 0; /* Used to write the new, merged, segment */
Fts3SegFilter filter; /* Segment term filter condition */
+ Fts3MultiSegReader csr; /* Cursor to iterate through level(s) */
+ int bIgnoreEmpty = 0; /* True to ignore empty segments */
- if( iLevel<0 ){
+ assert( iLevel==FTS3_SEGCURSOR_ALL
+ || iLevel==FTS3_SEGCURSOR_PENDING
+ || iLevel>=0
+ );
+ assert( iLevel<FTS3_SEGDIR_MAXLEVEL );
+ assert( iIndex>=0 && iIndex<p->nIndex );
+
+ rc = sqlite3Fts3SegReaderCursor(p, iIndex, iLevel, 0, 0, 1, 0, &csr);
+ if( rc!=SQLITE_OK || csr.nSegment==0 ) goto finished;
+
+ if( iLevel==FTS3_SEGCURSOR_ALL ){
/* This call is to merge all segments in the database to a single
** segment. The level of the new segment is equal to the the numerically
- ** greatest segment level currently present in the database. The index
- ** of the new segment is always 0.
- */
- iIdx = 0;
- rc = sqlite3Fts3SegReaderPending(p, 0, 0, 1, &pPending);
- if( rc!=SQLITE_OK ) goto finished;
- rc = fts3SegmentCountMax(p, &nSegment, &iNewLevel);
- if( rc!=SQLITE_OK ) goto finished;
- nSegment += (pPending!=0);
- if( nSegment<=1 ){
- return SQLITE_DONE;
- }
- }else{
- /* This call is to merge all segments at level iLevel. Find the next
- ** available segment index at level iLevel+1. The call to
- ** fts3AllocateSegdirIdx() will merge the segments at level iLevel+1 to
- ** a single iLevel+2 segment if necessary.
- */
- iNewLevel = iLevel+1;
- rc = fts3AllocateSegdirIdx(p, iNewLevel, &iIdx);
- if( rc!=SQLITE_OK ) goto finished;
- rc = fts3SegmentCount(p, iLevel, &nSegment);
- if( rc!=SQLITE_OK ) goto finished;
- }
- assert( nSegment>0 );
- assert( iNewLevel>=0 );
-
- /* Allocate space for an array of pointers to segment iterators. */
- apSegment = (Fts3SegReader**)sqlite3_malloc(sizeof(Fts3SegReader *)*nSegment);
- if( !apSegment ){
- rc = SQLITE_NOMEM;
- goto finished;
- }
- memset(apSegment, 0, sizeof(Fts3SegReader *)*nSegment);
-
- /* Allocate a Fts3SegReader structure for each segment being merged. A
- ** Fts3SegReader stores the state data required to iterate through all
- ** entries on all leaves of a single segment.
- */
- assert( SQL_SELECT_LEVEL+1==SQL_SELECT_ALL_LEVEL);
- rc = fts3SqlStmt(p, SQL_SELECT_LEVEL+(iLevel<0), &pStmt, 0);
- if( rc!=SQLITE_OK ) goto finished;
- sqlite3_bind_int(pStmt, 1, iLevel);
- for(i=0; SQLITE_ROW==(sqlite3_step(pStmt)); i++){
- rc = fts3SegReaderNew(pStmt, i, &apSegment[i]);
- if( rc!=SQLITE_OK ){
+ ** greatest segment level currently present in the database for this
+ ** index. The idx of the new segment is always 0. */
+ if( csr.nSegment==1 ){
+ rc = SQLITE_DONE;
goto finished;
}
+ rc = fts3SegmentMaxLevel(p, iIndex, &iNewLevel);
+ bIgnoreEmpty = 1;
+
+ }else if( iLevel==FTS3_SEGCURSOR_PENDING ){
+ iNewLevel = iIndex * FTS3_SEGDIR_MAXLEVEL;
+ rc = fts3AllocateSegdirIdx(p, iIndex, 0, &iIdx);
+ }else{
+ /* This call is to merge all segments at level iLevel. find the next
+ ** available segment index at level iLevel+1. The call to
+ ** fts3AllocateSegdirIdx() will merge the segments at level iLevel+1 to
+ ** a single iLevel+2 segment if necessary. */
+ rc = fts3AllocateSegdirIdx(p, iIndex, iLevel+1, &iIdx);
+ iNewLevel = iIndex * FTS3_SEGDIR_MAXLEVEL + iLevel+1;
}
- rc = sqlite3_reset(pStmt);
- if( pPending ){
- apSegment[i] = pPending;
- pPending = 0;
- }
- pStmt = 0;
if( rc!=SQLITE_OK ) goto finished;
+ assert( csr.nSegment>0 );
+ assert( iNewLevel>=(iIndex*FTS3_SEGDIR_MAXLEVEL) );
+ assert( iNewLevel<((iIndex+1)*FTS3_SEGDIR_MAXLEVEL) );
memset(&filter, 0, sizeof(Fts3SegFilter));
filter.flags = FTS3_SEGMENT_REQUIRE_POS;
- filter.flags |= (iLevel<0 ? FTS3_SEGMENT_IGNORE_EMPTY : 0);
- rc = sqlite3Fts3SegReaderIterate(p, apSegment, nSegment,
- &filter, fts3MergeCallback, (void *)&pWriter
- );
- if( rc!=SQLITE_OK ) goto finished;
+ filter.flags |= (bIgnoreEmpty ? FTS3_SEGMENT_IGNORE_EMPTY : 0);
- rc = fts3DeleteSegdir(p, iLevel, apSegment, nSegment);
- if( rc==SQLITE_OK ){
- rc = fts3SegWriterFlush(p, pWriter, iNewLevel, iIdx);
+ rc = sqlite3Fts3SegReaderStart(p, &csr, &filter);
+ while( SQLITE_OK==rc ){
+ rc = sqlite3Fts3SegReaderStep(p, &csr);
+ if( rc!=SQLITE_ROW ) break;
+ rc = fts3SegWriterAdd(p, &pWriter, 1,
+ csr.zTerm, csr.nTerm, csr.aDoclist, csr.nDoclist);
}
+ if( rc!=SQLITE_OK ) goto finished;
+ assert( pWriter );
+
+ if( iLevel!=FTS3_SEGCURSOR_PENDING ){
+ rc = fts3DeleteSegdir(p, iIndex, iLevel, csr.apSegment, csr.nSegment);
+ if( rc!=SQLITE_OK ) goto finished;
+ }
+ rc = fts3SegWriterFlush(p, pWriter, iNewLevel, iIdx);
finished:
fts3SegWriterFree(pWriter);
- if( apSegment ){
- for(i=0; i<nSegment; i++){
- sqlite3Fts3SegReaderFree(apSegment[i]);
- }
- sqlite3_free(apSegment);
- }
- sqlite3Fts3SegReaderFree(pPending);
- sqlite3_reset(pStmt);
+ sqlite3Fts3SegReaderFinish(&csr);
return rc;
}
/*
-** Flush the contents of pendingTerms to a level 0 segment.
+** Flush the contents of pendingTerms to level 0 segments.
*/
SQLITE_PRIVATE int sqlite3Fts3PendingTermsFlush(Fts3Table *p){
- int rc; /* Return Code */
- int idx; /* Index of new segment created */
- SegmentWriter *pWriter = 0; /* Used to write the segment */
- Fts3SegReader *pReader = 0; /* Used to iterate through the hash table */
-
- /* Allocate a SegReader object to iterate through the contents of the
- ** pending-terms table. If an error occurs, or if there are no terms
- ** in the pending-terms table, return immediately.
- */
- rc = sqlite3Fts3SegReaderPending(p, 0, 0, 1, &pReader);
- if( rc!=SQLITE_OK || pReader==0 ){
- return rc;
+ int rc = SQLITE_OK;
+ int i;
+ for(i=0; rc==SQLITE_OK && i<p->nIndex; i++){
+ rc = fts3SegmentMerge(p, i, FTS3_SEGCURSOR_PENDING);
+ if( rc==SQLITE_DONE ) rc = SQLITE_OK;
}
-
- /* Determine the next index at level 0. If level 0 is already full, this
- ** call may merge all existing level 0 segments into a single level 1
- ** segment.
- */
- rc = fts3AllocateSegdirIdx(p, 0, &idx);
-
- /* If no errors have occured, iterate through the contents of the
- ** pending-terms hash table using the Fts3SegReader iterator. The callback
- ** writes each term (along with its doclist) to the database via the
- ** SegmentWriter handle pWriter.
- */
- if( rc==SQLITE_OK ){
- void *c = (void *)&pWriter; /* SegReaderIterate() callback context */
- Fts3SegFilter f; /* SegReaderIterate() parameters */
-
- memset(&f, 0, sizeof(Fts3SegFilter));
- f.flags = FTS3_SEGMENT_REQUIRE_POS;
- rc = sqlite3Fts3SegReaderIterate(p, &pReader, 1, &f, fts3FlushCallback, c);
- }
- assert( pWriter || rc!=SQLITE_OK );
-
- /* If no errors have occured, flush the SegmentWriter object to the
- ** database. Then delete the SegmentWriter and Fts3SegReader objects
- ** allocated by this function.
- */
- if( rc==SQLITE_OK ){
- rc = fts3SegWriterFlush(p, pWriter, 0, idx);
- }
- fts3SegWriterFree(pWriter);
- sqlite3Fts3SegReaderFree(pReader);
-
- if( rc==SQLITE_OK ){
- sqlite3Fts3PendingTermsClear(p);
- }
+ sqlite3Fts3PendingTermsClear(p);
return rc;
}
@@ -117078,9 +127520,9 @@
** a blob of varints.
*/
static void fts3InsertDocsize(
- int *pRC, /* Result code */
- Fts3Table *p, /* Table into which to insert */
- u32 *aSz /* Sizes of each column */
+ int *pRC, /* Result code */
+ Fts3Table *p, /* Table into which to insert */
+ u32 *aSz /* Sizes of each column, in tokens */
){
char *pBlob; /* The BLOB encoding of the document size */
int nBlob; /* Number of bytes in the BLOB */
@@ -117185,6 +127627,103 @@
sqlite3_free(a);
}
+static int fts3DoOptimize(Fts3Table *p, int bReturnDone){
+ int i;
+ int bSeenDone = 0;
+ int rc = SQLITE_OK;
+ for(i=0; rc==SQLITE_OK && i<p->nIndex; i++){
+ rc = fts3SegmentMerge(p, i, FTS3_SEGCURSOR_ALL);
+ if( rc==SQLITE_DONE ){
+ bSeenDone = 1;
+ rc = SQLITE_OK;
+ }
+ }
+ sqlite3Fts3SegmentsClose(p);
+ sqlite3Fts3PendingTermsClear(p);
+
+ return (rc==SQLITE_OK && bReturnDone && bSeenDone) ? SQLITE_DONE : rc;
+}
+
+/*
+** This function is called when the user executes the following statement:
+**
+** INSERT INTO <tbl>(<tbl>) VALUES('rebuild');
+**
+** The entire FTS index is discarded and rebuilt. If the table is one
+** created using the content=xxx option, then the new index is based on
+** the current contents of the xxx table. Otherwise, it is rebuilt based
+** on the contents of the %_content table.
+*/
+static int fts3DoRebuild(Fts3Table *p){
+ int rc; /* Return Code */
+
+ rc = fts3DeleteAll(p, 0);
+ if( rc==SQLITE_OK ){
+ u32 *aSz = 0;
+ u32 *aSzIns = 0;
+ u32 *aSzDel = 0;
+ sqlite3_stmt *pStmt = 0;
+ int nEntry = 0;
+
+ /* Compose and prepare an SQL statement to loop through the content table */
+ char *zSql = sqlite3_mprintf("SELECT %s" , p->zReadExprlist);
+ if( !zSql ){
+ rc = SQLITE_NOMEM;
+ }else{
+ rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0);
+ sqlite3_free(zSql);
+ }
+
+ if( rc==SQLITE_OK ){
+ int nByte = sizeof(u32) * (p->nColumn+1)*3;
+ aSz = (u32 *)sqlite3_malloc(nByte);
+ if( aSz==0 ){
+ rc = SQLITE_NOMEM;
+ }else{
+ memset(aSz, 0, nByte);
+ aSzIns = &aSz[p->nColumn+1];
+ aSzDel = &aSzIns[p->nColumn+1];
+ }
+ }
+
+ while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){
+ int iCol;
+ rc = fts3PendingTermsDocid(p, sqlite3_column_int64(pStmt, 0));
+ aSz[p->nColumn] = 0;
+ for(iCol=0; rc==SQLITE_OK && iCol<p->nColumn; iCol++){
+ const char *z = (const char *) sqlite3_column_text(pStmt, iCol+1);
+ rc = fts3PendingTermsAdd(p, z, iCol, &aSz[iCol]);
+ aSz[p->nColumn] += sqlite3_column_bytes(pStmt, iCol+1);
+ }
+ if( p->bHasDocsize ){
+ fts3InsertDocsize(&rc, p, aSz);
+ }
+ if( rc!=SQLITE_OK ){
+ sqlite3_finalize(pStmt);
+ pStmt = 0;
+ }else{
+ nEntry++;
+ for(iCol=0; iCol<=p->nColumn; iCol++){
+ aSzIns[iCol] += aSz[iCol];
+ }
+ }
+ }
+ if( p->bHasStat ){
+ fts3UpdateDocTotals(&rc, p, aSzIns, aSzDel, nEntry);
+ }
+ sqlite3_free(aSz);
+
+ if( pStmt ){
+ int rc2 = sqlite3_finalize(pStmt);
+ if( rc==SQLITE_OK ){
+ rc = rc2;
+ }
+ }
+ }
+
+ return rc;
+}
+
/*
** Handle a 'special' INSERT of the form:
**
@@ -117201,12 +127740,9 @@
if( !zVal ){
return SQLITE_NOMEM;
}else if( nVal==8 && 0==sqlite3_strnicmp(zVal, "optimize", 8) ){
- rc = fts3SegmentMerge(p, -1);
- if( rc==SQLITE_DONE ){
- rc = SQLITE_OK;
- }else{
- sqlite3Fts3PendingTermsClear(p);
- }
+ rc = fts3DoOptimize(p, 0);
+ }else if( nVal==7 && 0==sqlite3_strnicmp(zVal, "rebuild", 7) ){
+ rc = fts3DoRebuild(p);
#ifdef SQLITE_TEST
}else if( nVal>9 && 0==sqlite3_strnicmp(zVal, "nodesize=", 9) ){
p->nNodeSize = atoi(&zVal[9]);
@@ -117219,57 +127755,19 @@
rc = SQLITE_ERROR;
}
- sqlite3Fts3SegmentsClose(p);
return rc;
}
/*
-** Return the deferred doclist associated with deferred token pDeferred.
-** This function assumes that sqlite3Fts3CacheDeferredDoclists() has already
-** been called to allocate and populate the doclist.
-*/
-SQLITE_PRIVATE char *sqlite3Fts3DeferredDoclist(Fts3DeferredToken *pDeferred, int *pnByte){
- if( pDeferred->pList ){
- *pnByte = pDeferred->pList->nData;
- return pDeferred->pList->aData;
- }
- *pnByte = 0;
- return 0;
-}
-
-/*
-** Helper fucntion for FreeDeferredDoclists(). This function removes all
-** references to deferred doclists from within the tree of Fts3Expr
-** structures headed by
-*/
-static void fts3DeferredDoclistClear(Fts3Expr *pExpr){
- if( pExpr ){
- fts3DeferredDoclistClear(pExpr->pLeft);
- fts3DeferredDoclistClear(pExpr->pRight);
- if( pExpr->isLoaded ){
- sqlite3_free(pExpr->aDoclist);
- pExpr->isLoaded = 0;
- pExpr->aDoclist = 0;
- pExpr->nDoclist = 0;
- pExpr->pCurrent = 0;
- pExpr->iCurrent = 0;
- }
- }
-}
-
-/*
** Delete all cached deferred doclists. Deferred doclists are cached
** (allocated) by the sqlite3Fts3CacheDeferredDoclists() function.
*/
SQLITE_PRIVATE void sqlite3Fts3FreeDeferredDoclists(Fts3Cursor *pCsr){
Fts3DeferredToken *pDef;
for(pDef=pCsr->pDeferred; pDef; pDef=pDef->pNext){
- sqlite3_free(pDef->pList);
+ fts3PendingListDelete(pDef->pList);
pDef->pList = 0;
}
- if( pCsr->pDeferred ){
- fts3DeferredDoclistClear(pCsr->pExpr);
- }
}
/*
@@ -117281,7 +127779,7 @@
Fts3DeferredToken *pNext;
for(pDef=pCsr->pDeferred; pDef; pDef=pNext){
pNext = pDef->pNext;
- sqlite3_free(pDef->pList);
+ fts3PendingListDelete(pDef->pList);
sqlite3_free(pDef);
}
pCsr->pDeferred = 0;
@@ -117325,6 +127823,7 @@
for(pDef=pCsr->pDeferred; pDef && rc==SQLITE_OK; pDef=pDef->pNext){
Fts3PhraseToken *pPT = pDef->pToken;
if( (pDef->iCol>=p->nColumn || pDef->iCol==i)
+ && (pPT->bFirst==0 || iPos==0)
&& (pPT->n==nToken || (pPT->isPrefix && pPT->n<nToken))
&& (0==memcmp(zToken, pPT->z, pPT->n))
){
@@ -117346,6 +127845,33 @@
return rc;
}
+SQLITE_PRIVATE int sqlite3Fts3DeferredTokenList(
+ Fts3DeferredToken *p,
+ char **ppData,
+ int *pnData
+){
+ char *pRet;
+ int nSkip;
+ sqlite3_int64 dummy;
+
+ *ppData = 0;
+ *pnData = 0;
+
+ if( p->pList==0 ){
+ return SQLITE_OK;
+ }
+
+ pRet = (char *)sqlite3_malloc(p->pList->nData);
+ if( !pRet ) return SQLITE_NOMEM;
+
+ nSkip = sqlite3Fts3GetVarint(p->pList->aData, &dummy);
+ *pnData = p->pList->nData - nSkip;
+ *ppData = pRet;
+
+ memcpy(pRet, &p->pList->aData[nSkip], *pnData);
+ return SQLITE_OK;
+}
+
/*
** Add an entry for token pToken to the pCsr->pDeferred list.
*/
@@ -117371,6 +127897,44 @@
return SQLITE_OK;
}
+/*
+** SQLite value pRowid contains the rowid of a row that may or may not be
+** present in the FTS3 table. If it is, delete it and adjust the contents
+** of subsiduary data structures accordingly.
+*/
+static int fts3DeleteByRowid(
+ Fts3Table *p,
+ sqlite3_value *pRowid,
+ int *pnDoc,
+ u32 *aSzDel
+){
+ int isEmpty = 0;
+ int rc = fts3IsEmpty(p, pRowid, &isEmpty);
+ if( rc==SQLITE_OK ){
+ if( isEmpty ){
+ /* Deleting this row means the whole table is empty. In this case
+ ** delete the contents of all three tables and throw away any
+ ** data in the pendingTerms hash table. */
+ rc = fts3DeleteAll(p, 1);
+ *pnDoc = *pnDoc - 1;
+ }else{
+ sqlite3_int64 iRemove = sqlite3_value_int64(pRowid);
+ rc = fts3PendingTermsDocid(p, iRemove);
+ fts3DeleteTerms(&rc, p, pRowid, aSzDel);
+ if( p->zContentTbl==0 ){
+ fts3SqlExec(&rc, p, SQL_DELETE_CONTENT, &pRowid);
+ if( sqlite3_changes(p->db) ) *pnDoc = *pnDoc - 1;
+ }else{
+ *pnDoc = *pnDoc - 1;
+ }
+ if( p->bHasDocsize ){
+ fts3SqlExec(&rc, p, SQL_DELETE_DOCSIZE, &pRowid);
+ }
+ }
+ }
+
+ return rc;
+}
/*
** This function does the work for the xUpdate method of FTS3 virtual
@@ -117385,54 +127949,103 @@
Fts3Table *p = (Fts3Table *)pVtab;
int rc = SQLITE_OK; /* Return Code */
int isRemove = 0; /* True for an UPDATE or DELETE */
- sqlite3_int64 iRemove = 0; /* Rowid removed by UPDATE or DELETE */
- u32 *aSzIns; /* Sizes of inserted documents */
+ u32 *aSzIns = 0; /* Sizes of inserted documents */
u32 *aSzDel; /* Sizes of deleted documents */
int nChng = 0; /* Net change in number of documents */
+ int bInsertDone = 0;
assert( p->pSegments==0 );
+ /* Check for a "special" INSERT operation. One of the form:
+ **
+ ** INSERT INTO xyz(xyz) VALUES('command');
+ */
+ if( nArg>1
+ && sqlite3_value_type(apVal[0])==SQLITE_NULL
+ && sqlite3_value_type(apVal[p->nColumn+2])!=SQLITE_NULL
+ ){
+ rc = fts3SpecialInsert(p, apVal[p->nColumn+2]);
+ goto update_out;
+ }
+
/* Allocate space to hold the change in document sizes */
aSzIns = sqlite3_malloc( sizeof(aSzIns[0])*(p->nColumn+1)*2 );
- if( aSzIns==0 ) return SQLITE_NOMEM;
+ if( aSzIns==0 ){
+ rc = SQLITE_NOMEM;
+ goto update_out;
+ }
aSzDel = &aSzIns[p->nColumn+1];
memset(aSzIns, 0, sizeof(aSzIns[0])*(p->nColumn+1)*2);
- /* If this is a DELETE or UPDATE operation, remove the old record. */
- if( sqlite3_value_type(apVal[0])!=SQLITE_NULL ){
- int isEmpty = 0;
- rc = fts3IsEmpty(p, apVal, &isEmpty);
- if( rc==SQLITE_OK ){
- if( isEmpty ){
- /* Deleting this row means the whole table is empty. In this case
- ** delete the contents of all three tables and throw away any
- ** data in the pendingTerms hash table.
- */
- rc = fts3DeleteAll(p);
+ /* If this is an INSERT operation, or an UPDATE that modifies the rowid
+ ** value, then this operation requires constraint handling.
+ **
+ ** If the on-conflict mode is REPLACE, this means that the existing row
+ ** should be deleted from the database before inserting the new row. Or,
+ ** if the on-conflict mode is other than REPLACE, then this method must
+ ** detect the conflict and return SQLITE_CONSTRAINT before beginning to
+ ** modify the database file.
+ */
+ if( nArg>1 && p->zContentTbl==0 ){
+ /* Find the value object that holds the new rowid value. */
+ sqlite3_value *pNewRowid = apVal[3+p->nColumn];
+ if( sqlite3_value_type(pNewRowid)==SQLITE_NULL ){
+ pNewRowid = apVal[1];
+ }
+
+ if( sqlite3_value_type(pNewRowid)!=SQLITE_NULL && (
+ sqlite3_value_type(apVal[0])==SQLITE_NULL
+ || sqlite3_value_int64(apVal[0])!=sqlite3_value_int64(pNewRowid)
+ )){
+ /* The new rowid is not NULL (in this case the rowid will be
+ ** automatically assigned and there is no chance of a conflict), and
+ ** the statement is either an INSERT or an UPDATE that modifies the
+ ** rowid column. So if the conflict mode is REPLACE, then delete any
+ ** existing row with rowid=pNewRowid.
+ **
+ ** Or, if the conflict mode is not REPLACE, insert the new record into
+ ** the %_content table. If we hit the duplicate rowid constraint (or any
+ ** other error) while doing so, return immediately.
+ **
+ ** This branch may also run if pNewRowid contains a value that cannot
+ ** be losslessly converted to an integer. In this case, the eventual
+ ** call to fts3InsertData() (either just below or further on in this
+ ** function) will return SQLITE_MISMATCH. If fts3DeleteByRowid is
+ ** invoked, it will delete zero rows (since no row will have
+ ** docid=$pNewRowid if $pNewRowid is not an integer value).
+ */
+ if( sqlite3_vtab_on_conflict(p->db)==SQLITE_REPLACE ){
+ rc = fts3DeleteByRowid(p, pNewRowid, &nChng, aSzDel);
}else{
- isRemove = 1;
- iRemove = sqlite3_value_int64(apVal[0]);
- rc = fts3PendingTermsDocid(p, iRemove);
- fts3DeleteTerms(&rc, p, apVal, aSzDel);
- fts3SqlExec(&rc, p, SQL_DELETE_CONTENT, apVal);
- if( p->bHasDocsize ){
- fts3SqlExec(&rc, p, SQL_DELETE_DOCSIZE, apVal);
- }
- nChng--;
+ rc = fts3InsertData(p, apVal, pRowid);
+ bInsertDone = 1;
}
}
- }else if( sqlite3_value_type(apVal[p->nColumn+2])!=SQLITE_NULL ){
- sqlite3_free(aSzIns);
- return fts3SpecialInsert(p, apVal[p->nColumn+2]);
+ }
+ if( rc!=SQLITE_OK ){
+ goto update_out;
+ }
+
+ /* If this is a DELETE or UPDATE operation, remove the old record. */
+ if( sqlite3_value_type(apVal[0])!=SQLITE_NULL ){
+ assert( sqlite3_value_type(apVal[0])==SQLITE_INTEGER );
+ rc = fts3DeleteByRowid(p, apVal[0], &nChng, aSzDel);
+ isRemove = 1;
}
/* If this is an INSERT or UPDATE operation, insert the new record. */
if( nArg>1 && rc==SQLITE_OK ){
- rc = fts3InsertData(p, apVal, pRowid);
- if( rc==SQLITE_OK && (!isRemove || *pRowid!=iRemove) ){
+ if( bInsertDone==0 ){
+ rc = fts3InsertData(p, apVal, pRowid);
+ if( rc==SQLITE_CONSTRAINT && p->zContentTbl==0 ){
+ rc = FTS_CORRUPT_VTAB;
+ }
+ }
+ if( rc==SQLITE_OK && (!isRemove || *pRowid!=p->iPrevDocid ) ){
rc = fts3PendingTermsDocid(p, *pRowid);
}
if( rc==SQLITE_OK ){
+ assert( p->iPrevDocid==*pRowid );
rc = fts3InsertTerms(p, apVal, aSzIns);
}
if( p->bHasDocsize ){
@@ -117445,6 +128058,7 @@
fts3UpdateDocTotals(&rc, p, aSzIns, aSzDel, nChng);
}
+ update_out:
sqlite3_free(aSzIns);
sqlite3Fts3SegmentsClose(p);
return rc;
@@ -117459,12 +128073,10 @@
int rc;
rc = sqlite3_exec(p->db, "SAVEPOINT fts3", 0, 0, 0);
if( rc==SQLITE_OK ){
- rc = fts3SegmentMerge(p, -1);
- if( rc==SQLITE_OK ){
- rc = sqlite3_exec(p->db, "RELEASE fts3", 0, 0, 0);
- if( rc==SQLITE_OK ){
- sqlite3Fts3PendingTermsClear(p);
- }
+ rc = fts3DoOptimize(p, 1);
+ if( rc==SQLITE_OK || rc==SQLITE_DONE ){
+ int rc2 = sqlite3_exec(p->db, "RELEASE fts3", 0, 0, 0);
+ if( rc2!=SQLITE_OK ) rc = rc2;
}else{
sqlite3_exec(p->db, "ROLLBACK TO fts3", 0, 0, 0);
sqlite3_exec(p->db, "RELEASE fts3", 0, 0, 0);
@@ -117493,6 +128105,8 @@
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
+/* #include <string.h> */
+/* #include <assert.h> */
/*
** Characters that may appear in the second argument to matchinfo().
@@ -117654,92 +128268,24 @@
}
/*
-** The argument to this function is always a phrase node. Its doclist
-** (Fts3Expr.aDoclist[]) and the doclists associated with all phrase nodes
-** to the left of this one in the query tree have already been loaded.
-**
-** If this phrase node is part of a series of phrase nodes joined by
-** NEAR operators (and is not the left-most of said series), then elements are
-** removed from the phrases doclist consistent with the NEAR restriction. If
-** required, elements may be removed from the doclists of phrases to the
-** left of this one that are part of the same series of NEAR operator
-** connected phrases.
-**
-** If an OOM error occurs, SQLITE_NOMEM is returned. Otherwise, SQLITE_OK.
-*/
-static int fts3ExprNearTrim(Fts3Expr *pExpr){
- int rc = SQLITE_OK;
- Fts3Expr *pParent = pExpr->pParent;
-
- assert( pExpr->eType==FTSQUERY_PHRASE );
- while( rc==SQLITE_OK
- && pParent
- && pParent->eType==FTSQUERY_NEAR
- && pParent->pRight==pExpr
- ){
- /* This expression (pExpr) is the right-hand-side of a NEAR operator.
- ** Find the expression to the left of the same operator.
- */
- int nNear = pParent->nNear;
- Fts3Expr *pLeft = pParent->pLeft;
-
- if( pLeft->eType!=FTSQUERY_PHRASE ){
- assert( pLeft->eType==FTSQUERY_NEAR );
- assert( pLeft->pRight->eType==FTSQUERY_PHRASE );
- pLeft = pLeft->pRight;
- }
-
- rc = sqlite3Fts3ExprNearTrim(pLeft, pExpr, nNear);
-
- pExpr = pLeft;
- pParent = pExpr->pParent;
- }
-
- return rc;
-}
-
-/*
** This is an fts3ExprIterate() callback used while loading the doclists
** for each phrase into Fts3Expr.aDoclist[]/nDoclist. See also
** fts3ExprLoadDoclists().
*/
-static int fts3ExprLoadDoclistsCb1(Fts3Expr *pExpr, int iPhrase, void *ctx){
+static int fts3ExprLoadDoclistsCb(Fts3Expr *pExpr, int iPhrase, void *ctx){
int rc = SQLITE_OK;
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
LoadDoclistCtx *p = (LoadDoclistCtx *)ctx;
UNUSED_PARAMETER(iPhrase);
p->nPhrase++;
- p->nToken += pExpr->pPhrase->nToken;
-
- if( pExpr->isLoaded==0 ){
- rc = sqlite3Fts3ExprLoadDoclist(p->pCsr, pExpr);
- pExpr->isLoaded = 1;
- if( rc==SQLITE_OK ){
- rc = fts3ExprNearTrim(pExpr);
- }
- }
+ p->nToken += pPhrase->nToken;
return rc;
}
/*
-** This is an fts3ExprIterate() callback used while loading the doclists
-** for each phrase into Fts3Expr.aDoclist[]/nDoclist. See also
-** fts3ExprLoadDoclists().
-*/
-static int fts3ExprLoadDoclistsCb2(Fts3Expr *pExpr, int iPhrase, void *ctx){
- UNUSED_PARAMETER(iPhrase);
- UNUSED_PARAMETER(ctx);
- if( pExpr->aDoclist ){
- pExpr->pCurrent = pExpr->aDoclist;
- pExpr->iCurrent = 0;
- pExpr->pCurrent += sqlite3Fts3GetVarint(pExpr->pCurrent, &pExpr->iCurrent);
- }
- return SQLITE_OK;
-}
-
-/*
** Load the doclists for each phrase in the query associated with FTS3 cursor
** pCsr.
**
@@ -117757,10 +128303,7 @@
int rc; /* Return Code */
LoadDoclistCtx sCtx = {0,0,0}; /* Context for fts3ExprIterate() */
sCtx.pCsr = pCsr;
- rc = fts3ExprIterate(pCsr->pExpr, fts3ExprLoadDoclistsCb1, (void *)&sCtx);
- if( rc==SQLITE_OK ){
- (void)fts3ExprIterate(pCsr->pExpr, fts3ExprLoadDoclistsCb2, 0);
- }
+ rc = fts3ExprIterate(pCsr->pExpr, fts3ExprLoadDoclistsCb, (void *)&sCtx);
if( pnPhrase ) *pnPhrase = sCtx.nPhrase;
if( pnToken ) *pnToken = sCtx.nToken;
return rc;
@@ -117911,11 +128454,12 @@
pPhrase->nToken = pExpr->pPhrase->nToken;
- pCsr = sqlite3Fts3FindPositions(pExpr, p->pCsr->iPrevId, p->iCol);
+ pCsr = sqlite3Fts3EvalPhrasePoslist(p->pCsr, pExpr, p->iCol);
if( pCsr ){
int iFirst = 0;
pPhrase->pList = pCsr;
fts3GetDeltaPosition(&pCsr, &iFirst);
+ assert( iFirst>=0 );
pPhrase->pHead = pCsr;
pPhrase->pTail = pCsr;
pPhrase->iHead = iFirst;
@@ -118268,26 +128812,6 @@
return nEntry;
}
-static void fts3LoadColumnlistCounts(char **pp, u32 *aOut, int isGlobal){
- char *pCsr = *pp;
- while( *pCsr ){
- int nHit;
- sqlite3_int64 iCol = 0;
- if( *pCsr==0x01 ){
- pCsr++;
- pCsr += sqlite3Fts3GetVarint(pCsr, &iCol);
- }
- nHit = fts3ColumnlistCount(&pCsr);
- assert( nHit>0 );
- if( isGlobal ){
- aOut[iCol*3+1]++;
- }
- aOut[iCol*3] += nHit;
- }
- pCsr++;
- *pp = pCsr;
-}
-
/*
** fts3ExprIterate() callback used to collect the "global" matchinfo stats
** for a single query.
@@ -118321,48 +128845,9 @@
void *pCtx /* Pointer to MatchInfo structure */
){
MatchInfo *p = (MatchInfo *)pCtx;
- Fts3Cursor *pCsr = p->pCursor;
- char *pIter;
- char *pEnd;
- char *pFree = 0;
- u32 *aOut = &p->aMatchinfo[3*iPhrase*p->nCol];
-
- assert( pExpr->isLoaded );
- assert( pExpr->eType==FTSQUERY_PHRASE );
-
- if( pCsr->pDeferred ){
- Fts3Phrase *pPhrase = pExpr->pPhrase;
- int ii;
- for(ii=0; ii<pPhrase->nToken; ii++){
- if( pPhrase->aToken[ii].bFulltext ) break;
- }
- if( ii<pPhrase->nToken ){
- int nFree = 0;
- int rc = sqlite3Fts3ExprLoadFtDoclist(pCsr, pExpr, &pFree, &nFree);
- if( rc!=SQLITE_OK ) return rc;
- pIter = pFree;
- pEnd = &pFree[nFree];
- }else{
- int iCol; /* Column index */
- for(iCol=0; iCol<p->nCol; iCol++){
- aOut[iCol*3 + 1] = (u32)p->nDoc;
- aOut[iCol*3 + 2] = (u32)p->nDoc;
- }
- return SQLITE_OK;
- }
- }else{
- pIter = pExpr->aDoclist;
- pEnd = &pExpr->aDoclist[pExpr->nDoclist];
- }
-
- /* Fill in the global hit count matrix row for this phrase. */
- while( pIter<pEnd ){
- while( *pIter++ & 0x80 ); /* Skip past docid. */
- fts3LoadColumnlistCounts(&pIter, &aOut[1], 1);
- }
-
- sqlite3_free(pFree);
- return SQLITE_OK;
+ return sqlite3Fts3EvalPhraseStats(
+ p->pCursor, pExpr, &p->aMatchinfo[3*iPhrase*p->nCol]
+ );
}
/*
@@ -118376,17 +128861,16 @@
void *pCtx /* Pointer to MatchInfo structure */
){
MatchInfo *p = (MatchInfo *)pCtx;
+ int iStart = iPhrase * p->nCol * 3;
+ int i;
- if( pExpr->aDoclist ){
+ for(i=0; i<p->nCol; i++){
char *pCsr;
- int iStart = iPhrase * p->nCol * 3;
- int i;
-
- for(i=0; i<p->nCol; i++) p->aMatchinfo[iStart+i*3] = 0;
-
- pCsr = sqlite3Fts3FindPositions(pExpr, p->pCursor->iPrevId, -1);
+ pCsr = sqlite3Fts3EvalPhrasePoslist(p->pCursor, pExpr, i);
if( pCsr ){
- fts3LoadColumnlistCounts(&pCsr, &p->aMatchinfo[iStart], 0);
+ p->aMatchinfo[iStart+i*3] = fts3ColumnlistCount(&pCsr);
+ }else{
+ p->aMatchinfo[iStart+i*3] = 0;
}
}
@@ -118452,9 +128936,11 @@
if( rc!=SQLITE_OK ) return rc;
}
pStmt = *ppStmt;
+ assert( sqlite3_data_count(pStmt)==1 );
a = sqlite3_column_blob(pStmt, 0);
a += sqlite3Fts3GetVarint(a, &nDoc);
+ if( nDoc==0 ) return FTS_CORRUPT_VTAB;
*pnDoc = (u32)nDoc;
if( paLen ) *paLen = a;
@@ -118470,9 +128956,8 @@
typedef struct LcsIterator LcsIterator;
struct LcsIterator {
Fts3Expr *pExpr; /* Pointer to phrase expression */
- char *pRead; /* Cursor used to iterate through aDoclist */
int iPosOffset; /* Tokens count up to end of this phrase */
- int iCol; /* Current column number */
+ char *pRead; /* Cursor used to iterate through aDoclist */
int iPos; /* Current position */
};
@@ -118503,17 +128988,10 @@
int rc = 0;
pRead += sqlite3Fts3GetVarint(pRead, &iRead);
- if( iRead==0 ){
- pIter->iCol = LCS_ITERATOR_FINISHED;
+ if( iRead==0 || iRead==1 ){
+ pRead = 0;
rc = 1;
}else{
- if( iRead==1 ){
- pRead += sqlite3Fts3GetVarint(pRead, &iRead);
- pIter->iCol = (int)iRead;
- pIter->iPos = pIter->iPosOffset;
- pRead += sqlite3Fts3GetVarint(pRead, &iRead);
- rc = 1;
- }
pIter->iPos += (int)(iRead-2);
}
@@ -118545,42 +129023,34 @@
if( !aIter ) return SQLITE_NOMEM;
memset(aIter, 0, sizeof(LcsIterator) * pCsr->nPhrase);
(void)fts3ExprIterate(pCsr->pExpr, fts3MatchinfoLcsCb, (void*)aIter);
+
for(i=0; i<pInfo->nPhrase; i++){
LcsIterator *pIter = &aIter[i];
nToken -= pIter->pExpr->pPhrase->nToken;
pIter->iPosOffset = nToken;
- pIter->pRead = sqlite3Fts3FindPositions(pIter->pExpr, pCsr->iPrevId, -1);
- if( pIter->pRead ){
- pIter->iPos = pIter->iPosOffset;
- fts3LcsIteratorAdvance(&aIter[i]);
- }else{
- pIter->iCol = LCS_ITERATOR_FINISHED;
- }
}
for(iCol=0; iCol<pInfo->nCol; iCol++){
int nLcs = 0; /* LCS value for this column */
int nLive = 0; /* Number of iterators in aIter not at EOF */
- /* Loop through the iterators in aIter[]. Set nLive to the number of
- ** iterators that point to a position-list corresponding to column iCol.
- */
for(i=0; i<pInfo->nPhrase; i++){
- assert( aIter[i].iCol>=iCol );
- if( aIter[i].iCol==iCol ) nLive++;
+ LcsIterator *pIt = &aIter[i];
+ pIt->pRead = sqlite3Fts3EvalPhrasePoslist(pCsr, pIt->pExpr, iCol);
+ if( pIt->pRead ){
+ pIt->iPos = pIt->iPosOffset;
+ fts3LcsIteratorAdvance(&aIter[i]);
+ nLive++;
+ }
}
- /* The following loop runs until all iterators in aIter[] have finished
- ** iterating through positions in column iCol. Exactly one of the
- ** iterators is advanced each time the body of the loop is run.
- */
while( nLive>0 ){
LcsIterator *pAdv = 0; /* The iterator to advance by one position */
int nThisLcs = 0; /* LCS for the current iterator positions */
for(i=0; i<pInfo->nPhrase; i++){
LcsIterator *pIter = &aIter[i];
- if( iCol!=pIter->iCol ){
+ if( pIter->pRead==0 ){
/* This iterator is already at EOF for this column. */
nThisLcs = 0;
}else{
@@ -118646,7 +129116,7 @@
case FTS3_MATCHINFO_NDOC:
if( bGlobal ){
- sqlite3_int64 nDoc;
+ sqlite3_int64 nDoc = 0;
rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &nDoc, 0);
pInfo->aMatchinfo[0] = (u32)nDoc;
}
@@ -118661,9 +129131,11 @@
if( rc==SQLITE_OK ){
int iCol;
for(iCol=0; iCol<pInfo->nCol; iCol++){
+ u32 iVal;
sqlite3_int64 nToken;
a += sqlite3Fts3GetVarint(a, &nToken);
- pInfo->aMatchinfo[iCol] = (u32)(((u32)(nToken&0xffffffff)+nDoc/2)/nDoc);
+ iVal = (u32)(((u32)(nToken&0xffffffff)+nDoc/2)/nDoc);
+ pInfo->aMatchinfo[iCol] = iVal;
}
}
}
@@ -118900,6 +129372,7 @@
};
struct TermOffsetCtx {
+ Fts3Cursor *pCsr;
int iCol; /* Column of table to populate aTerm for */
int iTerm;
sqlite3_int64 iDocid;
@@ -118917,7 +129390,7 @@
int iPos = 0; /* First position in position-list */
UNUSED_PARAMETER(iPhrase);
- pList = sqlite3Fts3FindPositions(pExpr, p->iDocid, p->iCol);
+ pList = sqlite3Fts3EvalPhrasePoslist(p->pCsr, pExpr, p->iCol);
nTerm = pExpr->pPhrase->nToken;
if( pList ){
fts3GetDeltaPosition(&pList, &iPos);
@@ -118970,6 +129443,7 @@
goto offsets_out;
}
sCtx.iDocid = pCsr->iPrevId;
+ sCtx.pCsr = pCsr;
/* Loop through the table columns, appending offset information to
** string-buffer res for each column.
@@ -119027,7 +129501,7 @@
if( !pTerm ){
/* All offsets for this column have been gathered. */
- break;
+ rc = SQLITE_DONE;
}else{
assert( iCurrent<=iMinPos );
if( 0==(0xFE&*pTerm->pList) ){
@@ -119044,8 +129518,8 @@
"%d %d %d %d ", iCol, pTerm-sCtx.aTerm, iStart, iEnd-iStart
);
rc = fts3StringAppend(&res, aBuffer, -1);
- }else if( rc==SQLITE_DONE ){
- rc = SQLITE_CORRUPT;
+ }else if( rc==SQLITE_DONE && pTab->zContentTbl==0 ){
+ rc = FTS_CORRUPT_VTAB;
}
}
}
@@ -119221,6 +129695,8 @@
#else
#endif
+/* #include <string.h> */
+/* #include <assert.h> */
#ifndef SQLITE_AMALGAMATION
#include "sqlite3rtree.h"
@@ -119633,17 +130109,17 @@
if( pNode && iNode==1 ){
pRtree->iDepth = readInt16(pNode->zData);
if( pRtree->iDepth>RTREE_MAX_DEPTH ){
- rc = SQLITE_CORRUPT;
+ rc = SQLITE_CORRUPT_VTAB;
}
}
/* If no error has occurred so far, check if the "number of entries"
** field on the node is too large. If so, set the return code to
- ** SQLITE_CORRUPT.
+ ** SQLITE_CORRUPT_VTAB.
*/
if( pNode && rc==SQLITE_OK ){
if( NCELL(pNode)>((pRtree->iNodeSize-4)/pRtree->nBytesPerCell) ){
- rc = SQLITE_CORRUPT;
+ rc = SQLITE_CORRUPT_VTAB;
}
}
@@ -119651,7 +130127,7 @@
if( pNode!=0 ){
nodeHashInsert(pRtree, pNode);
}else{
- rc = SQLITE_CORRUPT;
+ rc = SQLITE_CORRUPT_VTAB;
}
*ppNode = pNode;
}else{
@@ -120178,7 +130654,7 @@
return SQLITE_OK;
}
}
- return SQLITE_CORRUPT;
+ return SQLITE_CORRUPT_VTAB;
}
/*
@@ -120309,7 +130785,7 @@
int nBlob;
/* Check that value is actually a blob. */
- if( !sqlite3_value_type(pValue)==SQLITE_BLOB ) return SQLITE_ERROR;
+ if( sqlite3_value_type(pValue)!=SQLITE_BLOB ) return SQLITE_ERROR;
/* Check that the blob is roughly the right size. */
nBlob = sqlite3_value_bytes(pValue);
@@ -120384,7 +130860,8 @@
rc = SQLITE_NOMEM;
}else{
memset(pCsr->aConstraint, 0, sizeof(RtreeConstraint)*argc);
- assert( (idxStr==0 && argc==0) || strlen(idxStr)==argc*2 );
+ assert( (idxStr==0 && argc==0)
+ || (idxStr && (int)strlen(idxStr)==argc*2) );
for(ii=0; ii<argc; ii++){
RtreeConstraint *p = &pCsr->aConstraint[ii];
p->op = idxStr[ii*2];
@@ -120469,7 +130946,7 @@
*/
static int rtreeBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){
int rc = SQLITE_OK;
- int ii, cCol;
+ int ii;
int iIdx = 0;
char zIdxStr[RTREE_MAX_DIMENSIONS*8+1];
@@ -120477,7 +130954,7 @@
UNUSED_PARAMETER(tab);
assert( pIdxInfo->idxStr==0 );
- for(ii=0; ii<pIdxInfo->nConstraint; ii++){
+ for(ii=0; ii<pIdxInfo->nConstraint && iIdx<(int)(sizeof(zIdxStr)-1); ii++){
struct sqlite3_index_constraint *p = &pIdxInfo->aConstraint[ii];
if( p->usable && p->iColumn==0 && p->op==SQLITE_INDEX_CONSTRAINT_EQ ){
@@ -120501,9 +130978,7 @@
}
if( p->usable && (p->iColumn>0 || p->op==SQLITE_INDEX_CONSTRAINT_MATCH) ){
- int j, opmsk;
- static const unsigned char compatible[] = { 0, 0, 1, 1, 2, 2 };
- u8 op = 0;
+ u8 op;
switch( p->op ){
case SQLITE_INDEX_CONSTRAINT_EQ: op = RTREE_EQ; break;
case SQLITE_INDEX_CONSTRAINT_GT: op = RTREE_GT; break;
@@ -120515,37 +130990,10 @@
op = RTREE_MATCH;
break;
}
- assert( op!=0 );
-
- /* Make sure this particular constraint has not been used before.
- ** If it has been used before, ignore it.
- **
- ** A <= or < can be used if there is a prior >= or >.
- ** A >= or > can be used if there is a prior < or <=.
- ** A <= or < is disqualified if there is a prior <=, <, or ==.
- ** A >= or > is disqualified if there is a prior >=, >, or ==.
- ** A == is disqualifed if there is any prior constraint.
- */
- assert( compatible[RTREE_EQ & 7]==0 );
- assert( compatible[RTREE_LT & 7]==1 );
- assert( compatible[RTREE_LE & 7]==1 );
- assert( compatible[RTREE_GT & 7]==2 );
- assert( compatible[RTREE_GE & 7]==2 );
- cCol = p->iColumn - 1 + 'a';
- opmsk = compatible[op & 7];
- for(j=0; j<iIdx; j+=2){
- if( zIdxStr[j+1]==cCol && (compatible[zIdxStr[j] & 7] & opmsk)!=0 ){
- op = 0;
- break;
- }
- }
- if( op ){
- assert( iIdx<sizeof(zIdxStr)-1 );
- zIdxStr[iIdx++] = op;
- zIdxStr[iIdx++] = cCol;
- pIdxInfo->aConstraintUsage[ii].argvIndex = (iIdx/2);
- pIdxInfo->aConstraintUsage[ii].omit = 1;
- }
+ zIdxStr[iIdx++] = op;
+ zIdxStr[iIdx++] = p->iColumn - 1 + 'a';
+ pIdxInfo->aConstraintUsage[ii].argvIndex = (iIdx/2);
+ pIdxInfo->aConstraintUsage[ii].omit = 1;
}
}
@@ -120566,7 +131014,7 @@
float area = 1.0;
int ii;
for(ii=0; ii<(pRtree->nDim*2); ii+=2){
- area = area * (DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii]));
+ area = (float)(area * (DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii])));
}
return area;
}
@@ -120579,7 +131027,7 @@
float margin = 0.0;
int ii;
for(ii=0; ii<(pRtree->nDim*2); ii+=2){
- margin += (DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii]));
+ margin += (float)(DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii]));
}
return margin;
}
@@ -120664,7 +131112,7 @@
o = 0.0;
break;
}else{
- o = o * (x2-x1);
+ o = o * (float)(x2-x1);
}
}
overlap += o;
@@ -120683,12 +131131,12 @@
int nCell,
int iExclude
){
- float before;
- float after;
+ double before;
+ double after;
before = cellOverlap(pRtree, p, aCell, nCell, iExclude);
cellUnion(pRtree, p, pInsert);
after = cellOverlap(pRtree, p, aCell, nCell, iExclude);
- return after-before;
+ return (float)(after-before);
}
#endif
@@ -120710,11 +131158,14 @@
for(ii=0; rc==SQLITE_OK && ii<(pRtree->iDepth-iHeight); ii++){
int iCell;
- sqlite3_int64 iBest;
+ sqlite3_int64 iBest = 0;
- float fMinGrowth;
- float fMinArea;
- float fMinOverlap;
+ float fMinGrowth = 0.0;
+ float fMinArea = 0.0;
+#if VARIANT_RSTARTREE_CHOOSESUBTREE
+ float fMinOverlap = 0.0;
+ float overlap;
+#endif
int nCell = NCELL(pNode);
RtreeCell cell;
@@ -120746,7 +131197,6 @@
int bBest = 0;
float growth;
float area;
- float overlap = 0.0;
nodeGetCell(pRtree, pNode, iCell, &cell);
growth = cellGrowth(pRtree, &cell, pCell);
area = cellArea(pRtree, &cell);
@@ -120754,6 +131204,8 @@
#if VARIANT_RSTARTREE_CHOOSESUBTREE
if( ii==(pRtree->iDepth-1) ){
overlap = cellOverlapEnlargement(pRtree,&cell,pCell,aCell,nCell,iCell);
+ }else{
+ overlap = 0.0;
}
if( (iCell==0)
|| (overlap<fMinOverlap)
@@ -120761,6 +131213,7 @@
|| (overlap==fMinOverlap && growth==fMinGrowth && area<fMinArea)
){
bBest = 1;
+ fMinOverlap = overlap;
}
#else
if( iCell==0||growth<fMinGrowth||(growth==fMinGrowth && area<fMinArea) ){
@@ -120768,7 +131221,6 @@
}
#endif
if( bBest ){
- fMinOverlap = overlap;
fMinGrowth = growth;
fMinArea = area;
iBest = cell.iRowid;
@@ -120802,7 +131254,7 @@
int iCell;
if( nodeParentIndex(pRtree, p, &iCell) ){
- return SQLITE_CORRUPT;
+ return SQLITE_CORRUPT_VTAB;
}
nodeGetCell(pRtree, pParent, iCell, &cell);
@@ -121144,9 +131596,9 @@
int *aSpare;
int ii;
- int iBestDim;
- int iBestSplit;
- float fBestMargin;
+ int iBestDim = 0;
+ int iBestSplit = 0;
+ float fBestMargin = 0.0;
int nByte = (pRtree->nDim+1)*(sizeof(int*)+nCell*sizeof(int));
@@ -121168,9 +131620,9 @@
for(ii=0; ii<pRtree->nDim; ii++){
float margin = 0.0;
- float fBestOverlap;
- float fBestArea;
- int iBestLeft;
+ float fBestOverlap = 0.0;
+ float fBestArea = 0.0;
+ int iBestLeft = 0;
int nLeft;
for(
@@ -121474,7 +131926,7 @@
}
rc = sqlite3_reset(pRtree->pReadParent);
if( rc==SQLITE_OK ) rc = rc2;
- if( rc==SQLITE_OK && !pChild->pParent ) rc = SQLITE_CORRUPT;
+ if( rc==SQLITE_OK && !pChild->pParent ) rc = SQLITE_CORRUPT_VTAB;
pChild = pChild->pParent;
}
return rc;
@@ -121485,7 +131937,7 @@
static int removeNode(Rtree *pRtree, RtreeNode *pNode, int iHeight){
int rc;
int rc2;
- RtreeNode *pParent;
+ RtreeNode *pParent = 0;
int iCell;
assert( pNode->nRef==1 );
@@ -121633,19 +132085,19 @@
}
aOrder[ii] = ii;
for(iDim=0; iDim<pRtree->nDim; iDim++){
- aCenterCoord[iDim] += DCOORD(aCell[ii].aCoord[iDim*2]);
- aCenterCoord[iDim] += DCOORD(aCell[ii].aCoord[iDim*2+1]);
+ aCenterCoord[iDim] += (float)DCOORD(aCell[ii].aCoord[iDim*2]);
+ aCenterCoord[iDim] += (float)DCOORD(aCell[ii].aCoord[iDim*2+1]);
}
}
for(iDim=0; iDim<pRtree->nDim; iDim++){
- aCenterCoord[iDim] = aCenterCoord[iDim]/((float)nCell*2.0);
+ aCenterCoord[iDim] = (float)(aCenterCoord[iDim]/((float)nCell*2.0));
}
for(ii=0; ii<nCell; ii++){
aDistance[ii] = 0.0;
for(iDim=0; iDim<pRtree->nDim; iDim++){
- float coord = DCOORD(aCell[ii].aCoord[iDim*2+1]) -
- DCOORD(aCell[ii].aCoord[iDim*2]);
+ float coord = (float)(DCOORD(aCell[ii].aCoord[iDim*2+1]) -
+ DCOORD(aCell[ii].aCoord[iDim*2]));
aDistance[ii] += (coord-aCenterCoord[iDim])*(coord-aCenterCoord[iDim]);
}
}
@@ -121744,10 +132196,10 @@
/* Find a node to store this cell in. pNode->iNode currently contains
** the height of the sub-tree headed by the cell.
*/
- rc = ChooseLeaf(pRtree, &cell, pNode->iNode, &pInsert);
+ rc = ChooseLeaf(pRtree, &cell, (int)pNode->iNode, &pInsert);
if( rc==SQLITE_OK ){
int rc2;
- rc = rtreeInsertCell(pRtree, pInsert, &cell, pNode->iNode);
+ rc = rtreeInsertCell(pRtree, pInsert, &cell, (int)pNode->iNode);
rc2 = nodeRelease(pRtree, pInsert);
if( rc==SQLITE_OK ){
rc = rc2;
@@ -121771,6 +132223,90 @@
}
/*
+** Remove the entry with rowid=iDelete from the r-tree structure.
+*/
+static int rtreeDeleteRowid(Rtree *pRtree, sqlite3_int64 iDelete){
+ int rc; /* Return code */
+ RtreeNode *pLeaf; /* Leaf node containing record iDelete */
+ int iCell; /* Index of iDelete cell in pLeaf */
+ RtreeNode *pRoot; /* Root node of rtree structure */
+
+
+ /* Obtain a reference to the root node to initialise Rtree.iDepth */
+ rc = nodeAcquire(pRtree, 1, 0, &pRoot);
+
+ /* Obtain a reference to the leaf node that contains the entry
+ ** about to be deleted.
+ */
+ if( rc==SQLITE_OK ){
+ rc = findLeafNode(pRtree, iDelete, &pLeaf);
+ }
+
+ /* Delete the cell in question from the leaf node. */
+ if( rc==SQLITE_OK ){
+ int rc2;
+ rc = nodeRowidIndex(pRtree, pLeaf, iDelete, &iCell);
+ if( rc==SQLITE_OK ){
+ rc = deleteCell(pRtree, pLeaf, iCell, 0);
+ }
+ rc2 = nodeRelease(pRtree, pLeaf);
+ if( rc==SQLITE_OK ){
+ rc = rc2;
+ }
+ }
+
+ /* Delete the corresponding entry in the <rtree>_rowid table. */
+ if( rc==SQLITE_OK ){
+ sqlite3_bind_int64(pRtree->pDeleteRowid, 1, iDelete);
+ sqlite3_step(pRtree->pDeleteRowid);
+ rc = sqlite3_reset(pRtree->pDeleteRowid);
+ }
+
+ /* Check if the root node now has exactly one child. If so, remove
+ ** it, schedule the contents of the child for reinsertion and
+ ** reduce the tree height by one.
+ **
+ ** This is equivalent to copying the contents of the child into
+ ** the root node (the operation that Gutman's paper says to perform
+ ** in this scenario).
+ */
+ if( rc==SQLITE_OK && pRtree->iDepth>0 && NCELL(pRoot)==1 ){
+ int rc2;
+ RtreeNode *pChild;
+ i64 iChild = nodeGetRowid(pRtree, pRoot, 0);
+ rc = nodeAcquire(pRtree, iChild, pRoot, &pChild);
+ if( rc==SQLITE_OK ){
+ rc = removeNode(pRtree, pChild, pRtree->iDepth-1);
+ }
+ rc2 = nodeRelease(pRtree, pChild);
+ if( rc==SQLITE_OK ) rc = rc2;
+ if( rc==SQLITE_OK ){
+ pRtree->iDepth--;
+ writeInt16(pRoot->zData, pRtree->iDepth);
+ pRoot->isDirty = 1;
+ }
+ }
+
+ /* Re-insert the contents of any underfull nodes removed from the tree. */
+ for(pLeaf=pRtree->pDeleted; pLeaf; pLeaf=pRtree->pDeleted){
+ if( rc==SQLITE_OK ){
+ rc = reinsertNodeContent(pRtree, pLeaf);
+ }
+ pRtree->pDeleted = pLeaf->pNext;
+ sqlite3_free(pLeaf);
+ }
+
+ /* Release the reference to the root node. */
+ if( rc==SQLITE_OK ){
+ rc = nodeRelease(pRtree, pRoot);
+ }else{
+ nodeRelease(pRtree, pRoot);
+ }
+
+ return rc;
+}
+
+/*
** The xUpdate method for rtree module virtual tables.
*/
static int rtreeUpdate(
@@ -121781,103 +132317,25 @@
){
Rtree *pRtree = (Rtree *)pVtab;
int rc = SQLITE_OK;
+ RtreeCell cell; /* New cell to insert if nData>1 */
+ int bHaveRowid = 0; /* Set to 1 after new rowid is determined */
rtreeReference(pRtree);
-
assert(nData>=1);
- /* If azData[0] is not an SQL NULL value, it is the rowid of a
- ** record to delete from the r-tree table. The following block does
- ** just that.
+ /* Constraint handling. A write operation on an r-tree table may return
+ ** SQLITE_CONSTRAINT for two reasons:
+ **
+ ** 1. A duplicate rowid value, or
+ ** 2. The supplied data violates the "x2>=x1" constraint.
+ **
+ ** In the first case, if the conflict-handling mode is REPLACE, then
+ ** the conflicting row can be removed before proceeding. In the second
+ ** case, SQLITE_CONSTRAINT must be returned regardless of the
+ ** conflict-handling mode specified by the user.
*/
- if( sqlite3_value_type(azData[0])!=SQLITE_NULL ){
- i64 iDelete; /* The rowid to delete */
- RtreeNode *pLeaf; /* Leaf node containing record iDelete */
- int iCell; /* Index of iDelete cell in pLeaf */
- RtreeNode *pRoot;
-
- /* Obtain a reference to the root node to initialise Rtree.iDepth */
- rc = nodeAcquire(pRtree, 1, 0, &pRoot);
-
- /* Obtain a reference to the leaf node that contains the entry
- ** about to be deleted.
- */
- if( rc==SQLITE_OK ){
- iDelete = sqlite3_value_int64(azData[0]);
- rc = findLeafNode(pRtree, iDelete, &pLeaf);
- }
-
- /* Delete the cell in question from the leaf node. */
- if( rc==SQLITE_OK ){
- int rc2;
- rc = nodeRowidIndex(pRtree, pLeaf, iDelete, &iCell);
- if( rc==SQLITE_OK ){
- rc = deleteCell(pRtree, pLeaf, iCell, 0);
- }
- rc2 = nodeRelease(pRtree, pLeaf);
- if( rc==SQLITE_OK ){
- rc = rc2;
- }
- }
-
- /* Delete the corresponding entry in the <rtree>_rowid table. */
- if( rc==SQLITE_OK ){
- sqlite3_bind_int64(pRtree->pDeleteRowid, 1, iDelete);
- sqlite3_step(pRtree->pDeleteRowid);
- rc = sqlite3_reset(pRtree->pDeleteRowid);
- }
-
- /* Check if the root node now has exactly one child. If so, remove
- ** it, schedule the contents of the child for reinsertion and
- ** reduce the tree height by one.
- **
- ** This is equivalent to copying the contents of the child into
- ** the root node (the operation that Gutman's paper says to perform
- ** in this scenario).
- */
- if( rc==SQLITE_OK && pRtree->iDepth>0 && NCELL(pRoot)==1 ){
- int rc2;
- RtreeNode *pChild;
- i64 iChild = nodeGetRowid(pRtree, pRoot, 0);
- rc = nodeAcquire(pRtree, iChild, pRoot, &pChild);
- if( rc==SQLITE_OK ){
- rc = removeNode(pRtree, pChild, pRtree->iDepth-1);
- }
- rc2 = nodeRelease(pRtree, pChild);
- if( rc==SQLITE_OK ) rc = rc2;
- if( rc==SQLITE_OK ){
- pRtree->iDepth--;
- writeInt16(pRoot->zData, pRtree->iDepth);
- pRoot->isDirty = 1;
- }
- }
-
- /* Re-insert the contents of any underfull nodes removed from the tree. */
- for(pLeaf=pRtree->pDeleted; pLeaf; pLeaf=pRtree->pDeleted){
- if( rc==SQLITE_OK ){
- rc = reinsertNodeContent(pRtree, pLeaf);
- }
- pRtree->pDeleted = pLeaf->pNext;
- sqlite3_free(pLeaf);
- }
-
- /* Release the reference to the root node. */
- if( rc==SQLITE_OK ){
- rc = nodeRelease(pRtree, pRoot);
- }else{
- nodeRelease(pRtree, pRoot);
- }
- }
-
- /* If the azData[] array contains more than one element, elements
- ** (azData[2]..azData[argc-1]) contain a new record to insert into
- ** the r-tree structure.
- */
- if( rc==SQLITE_OK && nData>1 ){
- /* Insert a new record into the r-tree */
- RtreeCell cell;
+ if( nData>1 ){
int ii;
- RtreeNode *pLeaf;
/* Populate the cell.aCoord[] array. The first coordinate is azData[3]. */
assert( nData==(pRtree->nDim*2 + 3) );
@@ -121901,18 +132359,49 @@
}
}
- /* Figure out the rowid of the new row. */
- if( sqlite3_value_type(azData[2])==SQLITE_NULL ){
- rc = newRowid(pRtree, &cell.iRowid);
- }else{
+ /* If a rowid value was supplied, check if it is already present in
+ ** the table. If so, the constraint has failed. */
+ if( sqlite3_value_type(azData[2])!=SQLITE_NULL ){
cell.iRowid = sqlite3_value_int64(azData[2]);
- sqlite3_bind_int64(pRtree->pReadRowid, 1, cell.iRowid);
- if( SQLITE_ROW==sqlite3_step(pRtree->pReadRowid) ){
- sqlite3_reset(pRtree->pReadRowid);
- rc = SQLITE_CONSTRAINT;
- goto constraint;
+ if( sqlite3_value_type(azData[0])==SQLITE_NULL
+ || sqlite3_value_int64(azData[0])!=cell.iRowid
+ ){
+ int steprc;
+ sqlite3_bind_int64(pRtree->pReadRowid, 1, cell.iRowid);
+ steprc = sqlite3_step(pRtree->pReadRowid);
+ rc = sqlite3_reset(pRtree->pReadRowid);
+ if( SQLITE_ROW==steprc ){
+ if( sqlite3_vtab_on_conflict(pRtree->db)==SQLITE_REPLACE ){
+ rc = rtreeDeleteRowid(pRtree, cell.iRowid);
+ }else{
+ rc = SQLITE_CONSTRAINT;
+ goto constraint;
+ }
+ }
}
- rc = sqlite3_reset(pRtree->pReadRowid);
+ bHaveRowid = 1;
+ }
+ }
+
+ /* If azData[0] is not an SQL NULL value, it is the rowid of a
+ ** record to delete from the r-tree table. The following block does
+ ** just that.
+ */
+ if( sqlite3_value_type(azData[0])!=SQLITE_NULL ){
+ rc = rtreeDeleteRowid(pRtree, sqlite3_value_int64(azData[0]));
+ }
+
+ /* If the azData[] array contains more than one element, elements
+ ** (azData[2]..azData[argc-1]) contain a new record to insert into
+ ** the r-tree structure.
+ */
+ if( rc==SQLITE_OK && nData>1 ){
+ /* Insert the new record into the r-tree */
+ RtreeNode *pLeaf;
+
+ /* Figure out the rowid of the new row. */
+ if( bHaveRowid==0 ){
+ rc = newRowid(pRtree, &cell.iRowid);
}
*pRowid = cell.iRowid;
@@ -121957,7 +132446,7 @@
}
static sqlite3_module rtreeModule = {
- 0, /* iVersion */
+ 0, /* iVersion */
rtreeCreate, /* xCreate - create a table */
rtreeConnect, /* xConnect - connect to an existing table */
rtreeBestIndex, /* xBestIndex - Determine search strategy */
@@ -121976,7 +132465,10 @@
0, /* xCommit - commit transaction */
0, /* xRollback - rollback transaction */
0, /* xFindFunction - function overloading */
- rtreeRename /* xRename - rename the table */
+ rtreeRename, /* xRename - rename the table */
+ 0, /* xSavepoint */
+ 0, /* xRelease */
+ 0 /* xRollbackTo */
};
static int rtreeSqlInit(
@@ -122096,7 +132588,7 @@
int rc;
char *zSql;
if( isCreate ){
- int iPageSize;
+ int iPageSize = 0;
zSql = sqlite3_mprintf("PRAGMA %Q.page_size", pRtree->zDb);
rc = getIntFromStmt(db, zSql, &iPageSize);
if( rc==SQLITE_OK ){
@@ -122153,6 +132645,8 @@
return SQLITE_ERROR;
}
+ sqlite3_vtab_config(db, SQLITE_VTAB_CONSTRAINT_SUPPORT, 1);
+
/* Allocate the sqlite3_vtab structure */
nDb = strlen(argv[1]);
nName = strlen(argv[2]);
@@ -122249,7 +132743,7 @@
int jj;
nodeGetCell(&tree, &node, ii, &cell);
- sqlite3_snprintf(512-nCell,&zCell[nCell],"%d", cell.iRowid);
+ sqlite3_snprintf(512-nCell,&zCell[nCell],"%lld", cell.iRowid);
nCell = strlen(zCell);
for(jj=0; jj<tree.nDim*2; jj++){
sqlite3_snprintf(512-nCell,&zCell[nCell]," %f",(double)cell.aCoord[jj].f);
@@ -122422,6 +132916,7 @@
#include <unicode/ustring.h>
#include <unicode/ucol.h>
+/* #include <assert.h> */
#ifndef SQLITE_CORE
SQLITE_EXTENSION_INIT1
@@ -122630,6 +133125,8 @@
UBool res;
const UChar *zString = sqlite3_value_text16(apArg[1]);
+ (void)nArg; /* Unused parameter */
+
/* If the left hand side of the regexp operator is NULL,
** then the result is also NULL.
*/
@@ -122858,7 +133355,7 @@
int rc = SQLITE_OK;
int i;
- for(i=0; rc==SQLITE_OK && i<(sizeof(scalars)/sizeof(struct IcuScalar)); i++){
+ for(i=0; rc==SQLITE_OK && i<(int)(sizeof(scalars)/sizeof(scalars[0])); i++){
struct IcuScalar *p = &scalars[i];
rc = sqlite3_create_function(
db, p->zName, p->nArg, p->enc, p->pContext, p->xFunc, 0, 0
@@ -122895,15 +133392,16 @@
**
*************************************************************************
** This file implements a tokenizer for fts3 based on the ICU library.
-**
-** $Id: fts3_icu.c,v 1.3 2008/09/01 18:34:20 danielk1977 Exp $
*/
-
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
#ifdef SQLITE_ENABLE_ICU
+/* #include <assert.h> */
+/* #include <string.h> */
#include <unicode/ubrk.h>
+/* #include <unicode/ucol.h> */
+/* #include <unicode/ustring.h> */
#include <unicode/utf16.h>
typedef struct IcuTokenizer IcuTokenizer;
diff --git a/dist/sqlite3.c.orig b/dist/sqlite3.c.orig
index 8915873..f501d0b 100644
--- a/dist/sqlite3.c.orig
+++ b/dist/sqlite3.c.orig
@@ -1,7 +1,7 @@
/******************************************************************************
** This file is an amalgamation of many separate C source files from SQLite
-** version 3.7.4. By combining all the individual C code files into this
-** single large file, the entire code can be compiled as a one translation
+** version 3.7.10. By combining all the individual C code files into this
+** single large file, the entire code can be compiled as a single translation
** unit. This allows many compilers to do optimizations that would not be
** possible if the files were compiled separately. Performance improvements
** of 5% or more are commonly seen when SQLite is compiled as a single
@@ -200,7 +200,7 @@
/*
** The maximum number of attached databases. This must be between 0
-** and 30. The upper bound on 30 is because a 32-bit integer bitmap
+** and 62. The upper bound on 62 is because a 64-bit integer bitmap
** is used internally to track attached databases.
*/
#ifndef SQLITE_MAX_ATTACHED
@@ -317,13 +317,6 @@
#endif
/*
-** The number of samples of an index that SQLite takes in order to
-** construct a histogram of the table content when running ANALYZE
-** and with SQLITE_ENABLE_STAT2
-*/
-#define SQLITE_INDEX_SAMPLES 10
-
-/*
** The following macros are used to cast pointers to integers and
** integers to pointers. The way you do this varies from one compiler
** to the next, so we have developed the following set of #if statements
@@ -373,6 +366,14 @@
#endif
/*
+** Powersafe overwrite is on by default. But can be turned off using
+** the -DSQLITE_POWERSAFE_OVERWRITE=0 command-line option.
+*/
+#ifndef SQLITE_POWERSAFE_OVERWRITE
+# define SQLITE_POWERSAFE_OVERWRITE 1
+#endif
+
+/*
** The SQLITE_DEFAULT_MEMSTATUS macro must be defined as either 0 or 1.
** It determines whether or not the features related to
** SQLITE_CONFIG_MEMSTATUS are available by default or not. This value can
@@ -387,19 +388,25 @@
** specify which memory allocation subsystem to use.
**
** SQLITE_SYSTEM_MALLOC // Use normal system malloc()
+** SQLITE_WIN32_MALLOC // Use Win32 native heap API
** SQLITE_MEMDEBUG // Debugging version of system malloc()
**
+** On Windows, if the SQLITE_WIN32_MALLOC_VALIDATE macro is defined and the
+** assert() macro is enabled, each call into the Win32 native heap subsystem
+** will cause HeapValidate to be called. If heap validation should fail, an
+** assertion will be triggered.
+**
** (Historical note: There used to be several other options, but we've
-** pared it down to just these two.)
+** pared it down to just these three.)
**
** If none of the above are defined, then set SQLITE_SYSTEM_MALLOC as
** the default.
*/
-#if defined(SQLITE_SYSTEM_MALLOC)+defined(SQLITE_MEMDEBUG)>1
+#if defined(SQLITE_SYSTEM_MALLOC)+defined(SQLITE_WIN32_MALLOC)+defined(SQLITE_MEMDEBUG)>1
# error "At most one of the following compile-time configuration options\
- is allows: SQLITE_SYSTEM_MALLOC, SQLITE_MEMDEBUG"
+ is allows: SQLITE_SYSTEM_MALLOC, SQLITE_WIN32_MALLOC, SQLITE_MEMDEBUG"
#endif
-#if defined(SQLITE_SYSTEM_MALLOC)+defined(SQLITE_MEMDEBUG)==0
+#if defined(SQLITE_SYSTEM_MALLOC)+defined(SQLITE_WIN32_MALLOC)+defined(SQLITE_MEMDEBUG)==0
# define SQLITE_SYSTEM_MALLOC 1
#endif
@@ -650,9 +657,9 @@
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
-#define SQLITE_VERSION "3.7.4"
-#define SQLITE_VERSION_NUMBER 3007004
-#define SQLITE_SOURCE_ID "2011-02-23 14:33:31 8609a15dfad23a7c5311b52617d5c4818c0b8d1e"
+#define SQLITE_VERSION "3.7.10"
+#define SQLITE_VERSION_NUMBER 3007010
+#define SQLITE_SOURCE_ID "2012-01-16 13:28:40 ebd01a8deffb5024a5d7494eef800d2366d97204"
/*
** CAPI3REF: Run-Time Library Version Numbers
@@ -720,7 +727,7 @@
** CAPI3REF: Test To See If The Library Is Threadsafe
**
** ^The sqlite3_threadsafe() function returns zero if and only if
-** SQLite was compiled mutexing code omitted due to the
+** SQLite was compiled with mutexing code omitted due to the
** [SQLITE_THREADSAFE] compile-time option being set to 0.
**
** SQLite can be compiled with or without mutexes. When
@@ -853,7 +860,7 @@
** argument. ^If the callback function of the 3rd argument to
** sqlite3_exec() is not NULL, then it is invoked for each result row
** coming out of the evaluated SQL statements. ^The 4th argument to
-** to sqlite3_exec() is relayed through to the 1st argument of each
+** sqlite3_exec() is relayed through to the 1st argument of each
** callback invocation. ^If the callback pointer to sqlite3_exec()
** is NULL, then no callback is ever invoked and result rows are
** ignored.
@@ -914,11 +921,12 @@
** KEYWORDS: {result code} {result codes}
**
** Many SQLite functions return an integer result code from the set shown
-** here in order to indicates success or failure.
+** here in order to indicate success or failure.
**
** New error codes may be added in future versions of SQLite.
**
-** See also: [SQLITE_IOERR_READ | extended result codes]
+** See also: [SQLITE_IOERR_READ | extended result codes],
+** [sqlite3_vtab_on_conflict()] [SQLITE_ROLLBACK | result codes].
*/
#define SQLITE_OK 0 /* Successful result */
/* beginning-of-error-codes */
@@ -933,7 +941,7 @@
#define SQLITE_INTERRUPT 9 /* Operation terminated by sqlite3_interrupt()*/
#define SQLITE_IOERR 10 /* Some kind of disk I/O error occurred */
#define SQLITE_CORRUPT 11 /* The database disk image is malformed */
-#define SQLITE_NOTFOUND 12 /* NOT USED. Table or record not found */
+#define SQLITE_NOTFOUND 12 /* Unknown opcode in sqlite3_file_control() */
#define SQLITE_FULL 13 /* Insertion failed because database is full */
#define SQLITE_CANTOPEN 14 /* Unable to open the database file */
#define SQLITE_PROTOCOL 15 /* Database lock protocol error */
@@ -995,17 +1003,21 @@
#define SQLITE_IOERR_SHMOPEN (SQLITE_IOERR | (18<<8))
#define SQLITE_IOERR_SHMSIZE (SQLITE_IOERR | (19<<8))
#define SQLITE_IOERR_SHMLOCK (SQLITE_IOERR | (20<<8))
+#define SQLITE_IOERR_SHMMAP (SQLITE_IOERR | (21<<8))
+#define SQLITE_IOERR_SEEK (SQLITE_IOERR | (22<<8))
#define SQLITE_LOCKED_SHAREDCACHE (SQLITE_LOCKED | (1<<8))
#define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8))
#define SQLITE_CANTOPEN_NOTEMPDIR (SQLITE_CANTOPEN | (1<<8))
+#define SQLITE_CORRUPT_VTAB (SQLITE_CORRUPT | (1<<8))
+#define SQLITE_READONLY_RECOVERY (SQLITE_READONLY | (1<<8))
+#define SQLITE_READONLY_CANTLOCK (SQLITE_READONLY | (2<<8))
/*
** CAPI3REF: Flags For File Open Operations
**
** These bit values are intended for use in the
** 3rd parameter to the [sqlite3_open_v2()] interface and
-** in the 4th parameter to the xOpen method of the
-** [sqlite3_vfs] object.
+** in the 4th parameter to the [sqlite3_vfs.xOpen] method.
*/
#define SQLITE_OPEN_READONLY 0x00000001 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_READWRITE 0x00000002 /* Ok for sqlite3_open_v2() */
@@ -1013,6 +1025,7 @@
#define SQLITE_OPEN_DELETEONCLOSE 0x00000008 /* VFS only */
#define SQLITE_OPEN_EXCLUSIVE 0x00000010 /* VFS only */
#define SQLITE_OPEN_AUTOPROXY 0x00000020 /* VFS only */
+#define SQLITE_OPEN_URI 0x00000040 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_MAIN_DB 0x00000100 /* VFS only */
#define SQLITE_OPEN_TEMP_DB 0x00000200 /* VFS only */
#define SQLITE_OPEN_TRANSIENT_DB 0x00000400 /* VFS only */
@@ -1026,6 +1039,8 @@
#define SQLITE_OPEN_PRIVATECACHE 0x00040000 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_WAL 0x00080000 /* VFS only */
+/* Reserved: 0x00F00000 */
+
/*
** CAPI3REF: Device Characteristics
**
@@ -1044,7 +1059,11 @@
** first then the size of the file is extended, never the other
** way around. The SQLITE_IOCAP_SEQUENTIAL property means that
** information is written to disk in the same order as calls
-** to xWrite().
+** to xWrite(). The SQLITE_IOCAP_POWERSAFE_OVERWRITE property means that
+** after reboot following a crash or power loss, the only bytes in a
+** file that were written at the application level might have changed
+** and that adjacent bytes, even bytes within the same sector are
+** guaranteed to be unchanged.
*/
#define SQLITE_IOCAP_ATOMIC 0x00000001
#define SQLITE_IOCAP_ATOMIC512 0x00000002
@@ -1058,6 +1077,7 @@
#define SQLITE_IOCAP_SAFE_APPEND 0x00000200
#define SQLITE_IOCAP_SEQUENTIAL 0x00000400
#define SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN 0x00000800
+#define SQLITE_IOCAP_POWERSAFE_OVERWRITE 0x00001000
/*
** CAPI3REF: File Locking Levels
@@ -1121,17 +1141,18 @@
/*
** CAPI3REF: OS Interface File Virtual Methods Object
**
-** Every file opened by the [sqlite3_vfs] xOpen method populates an
+** Every file opened by the [sqlite3_vfs.xOpen] method populates an
** [sqlite3_file] object (or, more commonly, a subclass of the
** [sqlite3_file] object) with a pointer to an instance of this object.
** This object defines the methods used to perform various operations
** against the open file represented by the [sqlite3_file] object.
**
-** If the xOpen method sets the sqlite3_file.pMethods element
+** If the [sqlite3_vfs.xOpen] method sets the sqlite3_file.pMethods element
** to a non-NULL pointer, then the sqlite3_io_methods.xClose method
-** may be invoked even if the xOpen reported that it failed. The
-** only way to prevent a call to xClose following a failed xOpen
-** is for the xOpen to set the sqlite3_file.pMethods element to NULL.
+** may be invoked even if the [sqlite3_vfs.xOpen] reported that it failed. The
+** only way to prevent a call to xClose following a failed [sqlite3_vfs.xOpen]
+** is for the [sqlite3_vfs.xOpen] to set the sqlite3_file.pMethods element
+** to NULL.
**
** The flags argument to xSync may be one of [SQLITE_SYNC_NORMAL] or
** [SQLITE_SYNC_FULL]. The first choice is the normal fsync().
@@ -1165,7 +1186,9 @@
** core reserves all opcodes less than 100 for its own use.
** A [SQLITE_FCNTL_LOCKSTATE | list of opcodes] less than 100 is available.
** Applications that define a custom xFileControl method should use opcodes
-** greater than 100 to avoid conflicts.
+** greater than 100 to avoid conflicts. VFS implementations should
+** return [SQLITE_NOTFOUND] for file control opcodes that they do not
+** recognize.
**
** The xSectorSize() method returns the sector size of the
** device that underlies the file. The sector size is the
@@ -1258,15 +1281,90 @@
** for the nominated database. Allocating database file space in large
** chunks (say 1MB at a time), may reduce file-system fragmentation and
** improve performance on some systems.
+**
+** The [SQLITE_FCNTL_FILE_POINTER] opcode is used to obtain a pointer
+** to the [sqlite3_file] object associated with a particular database
+** connection. See the [sqlite3_file_control()] documentation for
+** additional information.
+**
+** ^(The [SQLITE_FCNTL_SYNC_OMITTED] opcode is generated internally by
+** SQLite and sent to all VFSes in place of a call to the xSync method
+** when the database connection has [PRAGMA synchronous] set to OFF.)^
+** Some specialized VFSes need this signal in order to operate correctly
+** when [PRAGMA synchronous | PRAGMA synchronous=OFF] is set, but most
+** VFSes do not need this signal and should silently ignore this opcode.
+** Applications should not call [sqlite3_file_control()] with this
+** opcode as doing so may disrupt the operation of the specialized VFSes
+** that do require it.
+**
+** ^The [SQLITE_FCNTL_WIN32_AV_RETRY] opcode is used to configure automatic
+** retry counts and intervals for certain disk I/O operations for the
+** windows [VFS] in order to provide robustness in the presence of
+** anti-virus programs. By default, the windows VFS will retry file read,
+** file write, and file delete operations up to 10 times, with a delay
+** of 25 milliseconds before the first retry and with the delay increasing
+** by an additional 25 milliseconds with each subsequent retry. This
+** opcode allows these two values (10 retries and 25 milliseconds of delay)
+** to be adjusted. The values are changed for all database connections
+** within the same process. The argument is a pointer to an array of two
+** integers where the first integer i the new retry count and the second
+** integer is the delay. If either integer is negative, then the setting
+** is not changed but instead the prior value of that setting is written
+** into the array entry, allowing the current retry settings to be
+** interrogated. The zDbName parameter is ignored.
+**
+** ^The [SQLITE_FCNTL_PERSIST_WAL] opcode is used to set or query the
+** persistent [WAL | Write AHead Log] setting. By default, the auxiliary
+** write ahead log and shared memory files used for transaction control
+** are automatically deleted when the latest connection to the database
+** closes. Setting persistent WAL mode causes those files to persist after
+** close. Persisting the files is useful when other processes that do not
+** have write permission on the directory containing the database file want
+** to read the database file, as the WAL and shared memory files must exist
+** in order for the database to be readable. The fourth parameter to
+** [sqlite3_file_control()] for this opcode should be a pointer to an integer.
+** That integer is 0 to disable persistent WAL mode or 1 to enable persistent
+** WAL mode. If the integer is -1, then it is overwritten with the current
+** WAL persistence setting.
+**
+** ^The [SQLITE_FCNTL_POWERSAFE_OVERWRITE] opcode is used to set or query the
+** persistent "powersafe-overwrite" or "PSOW" setting. The PSOW setting
+** determines the [SQLITE_IOCAP_POWERSAFE_OVERWRITE] bit of the
+** xDeviceCharacteristics methods. The fourth parameter to
+** [sqlite3_file_control()] for this opcode should be a pointer to an integer.
+** That integer is 0 to disable zero-damage mode or 1 to enable zero-damage
+** mode. If the integer is -1, then it is overwritten with the current
+** zero-damage mode setting.
+**
+** ^The [SQLITE_FCNTL_OVERWRITE] opcode is invoked by SQLite after opening
+** a write transaction to indicate that, unless it is rolled back for some
+** reason, the entire database file will be overwritten by the current
+** transaction. This is used by VACUUM operations.
+**
+** ^The [SQLITE_FCNTL_VFSNAME] opcode can be used to obtain the names of
+** all [VFSes] in the VFS stack. The names are of all VFS shims and the
+** final bottom-level VFS are written into memory obtained from
+** [sqlite3_malloc()] and the result is stored in the char* variable
+** that the fourth parameter of [sqlite3_file_control()] points to.
+** The caller is responsible for freeing the memory when done. As with
+** all file-control actions, there is no guarantee that this will actually
+** do anything. Callers should initialize the char* variable to a NULL
+** pointer in case this file-control is not implemented. This file-control
+** is intended for diagnostic use only.
*/
-#define SQLITE_FCNTL_LOCKSTATE 1
-#define SQLITE_GET_LOCKPROXYFILE 2
-#define SQLITE_SET_LOCKPROXYFILE 3
-#define SQLITE_LAST_ERRNO 4
-#define SQLITE_FCNTL_SIZE_HINT 5
-#define SQLITE_FCNTL_CHUNK_SIZE 6
-#define SQLITE_FCNTL_FILE_POINTER 7
-
+#define SQLITE_FCNTL_LOCKSTATE 1
+#define SQLITE_GET_LOCKPROXYFILE 2
+#define SQLITE_SET_LOCKPROXYFILE 3
+#define SQLITE_LAST_ERRNO 4
+#define SQLITE_FCNTL_SIZE_HINT 5
+#define SQLITE_FCNTL_CHUNK_SIZE 6
+#define SQLITE_FCNTL_FILE_POINTER 7
+#define SQLITE_FCNTL_SYNC_OMITTED 8
+#define SQLITE_FCNTL_WIN32_AV_RETRY 9
+#define SQLITE_FCNTL_PERSIST_WAL 10
+#define SQLITE_FCNTL_OVERWRITE 11
+#define SQLITE_FCNTL_VFSNAME 12
+#define SQLITE_FCNTL_POWERSAFE_OVERWRITE 13
/*
** CAPI3REF: Mutex Handle
@@ -1285,7 +1383,8 @@
**
** An instance of the sqlite3_vfs object defines the interface between
** the SQLite core and the underlying operating system. The "vfs"
-** in the name of the object stands for "virtual file system".
+** in the name of the object stands for "virtual file system". See
+** the [VFS | VFS documentation] for further information.
**
** The value of the iVersion field is initially 1 but may be larger in
** future versions of SQLite. Additional fields may be appended to this
@@ -1314,12 +1413,13 @@
** The zName field holds the name of the VFS module. The name must
** be unique across all VFS modules.
**
+** [[sqlite3_vfs.xOpen]]
** ^SQLite guarantees that the zFilename parameter to xOpen
** is either a NULL pointer or string obtained
** from xFullPathname() with an optional suffix added.
** ^If a suffix is added to the zFilename parameter, it will
** consist of a single "-" character followed by no more than
-** 10 alphanumeric and/or "-" characters.
+** 11 alphanumeric and/or "-" characters.
** ^SQLite further guarantees that
** the string will be valid and unchanged until xClose() is
** called. Because of the previous sentence,
@@ -1391,6 +1491,7 @@
** element will be valid after xOpen returns regardless of the success
** or failure of the xOpen call.
**
+** [[sqlite3_vfs.xAccess]]
** ^The flags argument to xAccess() may be [SQLITE_ACCESS_EXISTS]
** to test for the existence of a file, or [SQLITE_ACCESS_READWRITE] to
** test whether a file is readable and writable, or [SQLITE_ACCESS_READ]
@@ -1415,16 +1516,29 @@
** method returns a Julian Day Number for the current date and time as
** a floating point value.
** ^The xCurrentTimeInt64() method returns, as an integer, the Julian
-** Day Number multipled by 86400000 (the number of milliseconds in
+** Day Number multiplied by 86400000 (the number of milliseconds in
** a 24-hour day).
** ^SQLite will use the xCurrentTimeInt64() method to get the current
** date and time if that method is available (if iVersion is 2 or
** greater and the function pointer is not NULL) and will fall back
** to xCurrentTime() if xCurrentTimeInt64() is unavailable.
+**
+** ^The xSetSystemCall(), xGetSystemCall(), and xNestSystemCall() interfaces
+** are not used by the SQLite core. These optional interfaces are provided
+** by some VFSes to facilitate testing of the VFS code. By overriding
+** system calls with functions under its control, a test program can
+** simulate faults and error conditions that would otherwise be difficult
+** or impossible to induce. The set of system calls that can be overridden
+** varies from one VFS to another, and from one version of the same VFS to the
+** next. Applications that use these interfaces must be prepared for any
+** or all of these interfaces to be NULL or for their behavior to change
+** from one release to the next. Applications must not attempt to access
+** any of these methods if the iVersion of the VFS is less than 3.
*/
typedef struct sqlite3_vfs sqlite3_vfs;
+typedef void (*sqlite3_syscall_ptr)(void);
struct sqlite3_vfs {
- int iVersion; /* Structure version number (currently 2) */
+ int iVersion; /* Structure version number (currently 3) */
int szOsFile; /* Size of subclassed sqlite3_file */
int mxPathname; /* Maximum file pathname length */
sqlite3_vfs *pNext; /* Next registered VFS */
@@ -1450,6 +1564,13 @@
int (*xCurrentTimeInt64)(sqlite3_vfs*, sqlite3_int64*);
/*
** The methods above are in versions 1 and 2 of the sqlite_vfs object.
+ ** Those below are for version 3 and greater.
+ */
+ int (*xSetSystemCall)(sqlite3_vfs*, const char *zName, sqlite3_syscall_ptr);
+ sqlite3_syscall_ptr (*xGetSystemCall)(sqlite3_vfs*, const char *zName);
+ const char *(*xNextSystemCall)(sqlite3_vfs*, const char *zName);
+ /*
+ ** The methods above are in versions 1 through 3 of the sqlite_vfs object.
** New fields may be appended in figure versions. The iVersion
** value will increment whenever this happens.
*/
@@ -1617,9 +1738,9 @@
** implementation of an application-defined [sqlite3_os_init()].
**
** The first argument to sqlite3_config() is an integer
-** [SQLITE_CONFIG_SINGLETHREAD | configuration option] that determines
+** [configuration option] that determines
** what property of SQLite is to be configured. Subsequent arguments
-** vary depending on the [SQLITE_CONFIG_SINGLETHREAD | configuration option]
+** vary depending on the [configuration option]
** in the first argument.
**
** ^When a configuration option is set, sqlite3_config() returns [SQLITE_OK].
@@ -1634,17 +1755,12 @@
** The sqlite3_db_config() interface is used to make configuration
** changes to a [database connection]. The interface is similar to
** [sqlite3_config()] except that the changes apply to a single
-** [database connection] (specified in the first argument). The
-** sqlite3_db_config() interface should only be used immediately after
-** the database connection is created using [sqlite3_open()],
-** [sqlite3_open16()], or [sqlite3_open_v2()].
+** [database connection] (specified in the first argument).
**
** The second argument to sqlite3_db_config(D,V,...) is the
-** configuration verb - an integer code that indicates what
-** aspect of the [database connection] is being configured.
-** The only choice for this value is [SQLITE_DBCONFIG_LOOKASIDE].
-** New verbs are likely to be added in future releases of SQLite.
-** Additional arguments depend on the verb.
+** [SQLITE_DBCONFIG_LOOKASIDE | configuration verb] - an integer code
+** that indicates what aspect of the [database connection] is being configured.
+** Subsequent arguments vary depending on the configuration verb.
**
** ^Calls to sqlite3_db_config() return SQLITE_OK if and only if
** the call is considered successful.
@@ -1676,16 +1792,10 @@
** order to verify that SQLite recovers gracefully from such
** conditions.
**
-** The xMalloc and xFree methods must work like the
-** malloc() and free() functions from the standard C library.
-** The xRealloc method must work like realloc() from the standard C library
-** with the exception that if the second argument to xRealloc is zero,
-** xRealloc must be a no-op - it must not perform any allocation or
-** deallocation. ^SQLite guarantees that the second argument to
+** The xMalloc, xRealloc, and xFree methods must work like the
+** malloc(), realloc() and free() functions from the standard C library.
+** ^SQLite guarantees that the second argument to
** xRealloc is always a value returned by a prior call to xRoundup.
-** And so in cases where xRoundup always returns a positive number,
-** xRealloc can perform exactly as the standard library realloc() and
-** still be in compliance with this specification.
**
** xSize should return the allocated size of a memory allocation
** previously obtained from xMalloc or xRealloc. The allocated size
@@ -1734,6 +1844,7 @@
/*
** CAPI3REF: Configuration Options
+** KEYWORDS: {configuration option}
**
** These constants are the available integer configuration options that
** can be passed as the first argument to the [sqlite3_config()] interface.
@@ -1746,7 +1857,7 @@
** is invoked.
**
** <dl>
-** <dt>SQLITE_CONFIG_SINGLETHREAD</dt>
+** [[SQLITE_CONFIG_SINGLETHREAD]] <dt>SQLITE_CONFIG_SINGLETHREAD</dt>
** <dd>There are no arguments to this option. ^This option sets the
** [threading mode] to Single-thread. In other words, it disables
** all mutexing and puts SQLite into a mode where it can only be used
@@ -1757,7 +1868,7 @@
** [SQLITE_ERROR] if called with the SQLITE_CONFIG_SINGLETHREAD
** configuration option.</dd>
**
-** <dt>SQLITE_CONFIG_MULTITHREAD</dt>
+** [[SQLITE_CONFIG_MULTITHREAD]] <dt>SQLITE_CONFIG_MULTITHREAD</dt>
** <dd>There are no arguments to this option. ^This option sets the
** [threading mode] to Multi-thread. In other words, it disables
** mutexing on [database connection] and [prepared statement] objects.
@@ -1771,7 +1882,7 @@
** [sqlite3_config()] will return [SQLITE_ERROR] if called with the
** SQLITE_CONFIG_MULTITHREAD configuration option.</dd>
**
-** <dt>SQLITE_CONFIG_SERIALIZED</dt>
+** [[SQLITE_CONFIG_SERIALIZED]] <dt>SQLITE_CONFIG_SERIALIZED</dt>
** <dd>There are no arguments to this option. ^This option sets the
** [threading mode] to Serialized. In other words, this option enables
** all mutexes including the recursive
@@ -1787,7 +1898,7 @@
** [sqlite3_config()] will return [SQLITE_ERROR] if called with the
** SQLITE_CONFIG_SERIALIZED configuration option.</dd>
**
-** <dt>SQLITE_CONFIG_MALLOC</dt>
+** [[SQLITE_CONFIG_MALLOC]] <dt>SQLITE_CONFIG_MALLOC</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mem_methods] structure. The argument specifies
** alternative low-level memory allocation routines to be used in place of
@@ -1795,7 +1906,7 @@
** its own private copy of the content of the [sqlite3_mem_methods] structure
** before the [sqlite3_config()] call returns.</dd>
**
-** <dt>SQLITE_CONFIG_GETMALLOC</dt>
+** [[SQLITE_CONFIG_GETMALLOC]] <dt>SQLITE_CONFIG_GETMALLOC</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mem_methods] structure. The [sqlite3_mem_methods]
** structure is filled with the currently defined memory allocation routines.)^
@@ -1803,7 +1914,7 @@
** routines with a wrapper that simulations memory allocation failure or
** tracks memory usage, for example. </dd>
**
-** <dt>SQLITE_CONFIG_MEMSTATUS</dt>
+** [[SQLITE_CONFIG_MEMSTATUS]] <dt>SQLITE_CONFIG_MEMSTATUS</dt>
** <dd> ^This option takes single argument of type int, interpreted as a
** boolean, which enables or disables the collection of memory allocation
** statistics. ^(When memory allocation statistics are disabled, the
@@ -1819,10 +1930,10 @@
** allocation statistics are disabled by default.
** </dd>
**
-** <dt>SQLITE_CONFIG_SCRATCH</dt>
+** [[SQLITE_CONFIG_SCRATCH]] <dt>SQLITE_CONFIG_SCRATCH</dt>
** <dd> ^This option specifies a static memory buffer that SQLite can use for
** scratch memory. There are three arguments: A pointer an 8-byte
-** aligned memory buffer from which the scrach allocations will be
+** aligned memory buffer from which the scratch allocations will be
** drawn, the size of each scratch allocation (sz),
** and the maximum number of scratch allocations (N). The sz
** argument must be a multiple of 16.
@@ -1835,11 +1946,11 @@
** scratch memory beyond what is provided by this configuration option, then
** [sqlite3_malloc()] will be used to obtain the memory needed.</dd>
**
-** <dt>SQLITE_CONFIG_PAGECACHE</dt>
+** [[SQLITE_CONFIG_PAGECACHE]] <dt>SQLITE_CONFIG_PAGECACHE</dt>
** <dd> ^This option specifies a static memory buffer that SQLite can use for
-** the database page cache with the default page cache implemenation.
+** the database page cache with the default page cache implementation.
** This configuration should not be used if an application-define page
-** cache implementation is loaded using the SQLITE_CONFIG_PCACHE option.
+** cache implementation is loaded using the SQLITE_CONFIG_PCACHE2 option.
** There are three arguments to this option: A pointer to 8-byte aligned
** memory, the size of each page buffer (sz), and the number of pages (N).
** The sz argument should be the size of the largest database page
@@ -1856,7 +1967,7 @@
** be aligned to an 8-byte boundary or subsequent behavior of SQLite
** will be undefined.</dd>
**
-** <dt>SQLITE_CONFIG_HEAP</dt>
+** [[SQLITE_CONFIG_HEAP]] <dt>SQLITE_CONFIG_HEAP</dt>
** <dd> ^This option specifies a static memory buffer that SQLite will use
** for all of its dynamic memory allocation needs beyond those provided
** for by [SQLITE_CONFIG_SCRATCH] and [SQLITE_CONFIG_PAGECACHE].
@@ -1869,9 +1980,11 @@
** [SQLITE_ENABLE_MEMSYS5] are defined, then the alternative memory
** allocator is engaged to handle all of SQLites memory allocation needs.
** The first pointer (the memory pointer) must be aligned to an 8-byte
-** boundary or subsequent behavior of SQLite will be undefined.</dd>
+** boundary or subsequent behavior of SQLite will be undefined.
+** The minimum allocation size is capped at 2**12. Reasonable values
+** for the minimum allocation size are 2**5 through 2**8.</dd>
**
-** <dt>SQLITE_CONFIG_MUTEX</dt>
+** [[SQLITE_CONFIG_MUTEX]] <dt>SQLITE_CONFIG_MUTEX</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mutex_methods] structure. The argument specifies
** alternative low-level mutex routines to be used in place
@@ -1883,7 +1996,7 @@
** [sqlite3_config()] with the SQLITE_CONFIG_MUTEX configuration option will
** return [SQLITE_ERROR].</dd>
**
-** <dt>SQLITE_CONFIG_GETMUTEX</dt>
+** [[SQLITE_CONFIG_GETMUTEX]] <dt>SQLITE_CONFIG_GETMUTEX</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mutex_methods] structure. The
** [sqlite3_mutex_methods]
@@ -1896,7 +2009,7 @@
** [sqlite3_config()] with the SQLITE_CONFIG_GETMUTEX configuration option will
** return [SQLITE_ERROR].</dd>
**
-** <dt>SQLITE_CONFIG_LOOKASIDE</dt>
+** [[SQLITE_CONFIG_LOOKASIDE]] <dt>SQLITE_CONFIG_LOOKASIDE</dt>
** <dd> ^(This option takes two arguments that determine the default
** memory allocation for the lookaside memory allocator on each
** [database connection]. The first argument is the
@@ -1906,18 +2019,18 @@
** verb to [sqlite3_db_config()] can be used to change the lookaside
** configuration on individual connections.)^ </dd>
**
-** <dt>SQLITE_CONFIG_PCACHE</dt>
+** [[SQLITE_CONFIG_PCACHE2]] <dt>SQLITE_CONFIG_PCACHE2</dt>
** <dd> ^(This option takes a single argument which is a pointer to
-** an [sqlite3_pcache_methods] object. This object specifies the interface
+** an [sqlite3_pcache_methods2] object. This object specifies the interface
** to a custom page cache implementation.)^ ^SQLite makes a copy of the
** object and uses it for page cache memory allocations.</dd>
**
-** <dt>SQLITE_CONFIG_GETPCACHE</dt>
+** [[SQLITE_CONFIG_GETPCACHE2]] <dt>SQLITE_CONFIG_GETPCACHE2</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
-** [sqlite3_pcache_methods] object. SQLite copies of the current
+** [sqlite3_pcache_methods2] object. SQLite copies of the current
** page cache implementation into that object.)^ </dd>
**
-** <dt>SQLITE_CONFIG_LOG</dt>
+** [[SQLITE_CONFIG_LOG]] <dt>SQLITE_CONFIG_LOG</dt>
** <dd> ^The SQLITE_CONFIG_LOG option takes two arguments: a pointer to a
** function with a call signature of void(*)(void*,int,const char*),
** and a pointer to void. ^If the function pointer is not NULL, it is
@@ -1935,6 +2048,23 @@
** In a multi-threaded application, the application-defined logger
** function must be threadsafe. </dd>
**
+** [[SQLITE_CONFIG_URI]] <dt>SQLITE_CONFIG_URI
+** <dd> This option takes a single argument of type int. If non-zero, then
+** URI handling is globally enabled. If the parameter is zero, then URI handling
+** is globally disabled. If URI handling is globally enabled, all filenames
+** passed to [sqlite3_open()], [sqlite3_open_v2()], [sqlite3_open16()] or
+** specified as part of [ATTACH] commands are interpreted as URIs, regardless
+** of whether or not the [SQLITE_OPEN_URI] flag is set when the database
+** connection is opened. If it is globally disabled, filenames are
+** only interpreted as URIs if the SQLITE_OPEN_URI flag is set when the
+** database connection is opened. By default, URI handling is globally
+** disabled. The default value may be changed by compiling with the
+** [SQLITE_USE_URI] symbol defined.
+**
+** [[SQLITE_CONFIG_PCACHE]] [[SQLITE_CONFIG_GETPCACHE]]
+** <dt>SQLITE_CONFIG_PCACHE and SQLITE_CONFNIG_GETPCACHE
+** <dd> These options are obsolete and should not be used by new code.
+** They are retained for backwards compatibility but are now no-ops.
** </dl>
*/
#define SQLITE_CONFIG_SINGLETHREAD 1 /* nil */
@@ -1950,9 +2080,12 @@
#define SQLITE_CONFIG_GETMUTEX 11 /* sqlite3_mutex_methods* */
/* previously SQLITE_CONFIG_CHUNKALLOC 12 which is now unused. */
#define SQLITE_CONFIG_LOOKASIDE 13 /* int int */
-#define SQLITE_CONFIG_PCACHE 14 /* sqlite3_pcache_methods* */
-#define SQLITE_CONFIG_GETPCACHE 15 /* sqlite3_pcache_methods* */
+#define SQLITE_CONFIG_PCACHE 14 /* no-op */
+#define SQLITE_CONFIG_GETPCACHE 15 /* no-op */
#define SQLITE_CONFIG_LOG 16 /* xFunc, void* */
+#define SQLITE_CONFIG_URI 17 /* int */
+#define SQLITE_CONFIG_PCACHE2 18 /* sqlite3_pcache_methods2* */
+#define SQLITE_CONFIG_GETPCACHE2 19 /* sqlite3_pcache_methods2* */
/*
** CAPI3REF: Database Connection Configuration Options
@@ -1972,7 +2105,7 @@
** <dd> ^This option takes three additional arguments that determine the
** [lookaside memory allocator] configuration for the [database connection].
** ^The first argument (the third parameter to [sqlite3_db_config()] is a
-** pointer to an memory buffer to use for lookaside memory.
+** pointer to a memory buffer to use for lookaside memory.
** ^The first argument after the SQLITE_DBCONFIG_LOOKASIDE verb
** may be NULL in which case SQLite will allocate the
** lookaside buffer itself using [sqlite3_malloc()]. ^The second argument is the
@@ -1990,9 +2123,31 @@
** memory is in use leaves the configuration unchanged and returns
** [SQLITE_BUSY].)^</dd>
**
+** <dt>SQLITE_DBCONFIG_ENABLE_FKEY</dt>
+** <dd> ^This option is used to enable or disable the enforcement of
+** [foreign key constraints]. There should be two additional arguments.
+** The first argument is an integer which is 0 to disable FK enforcement,
+** positive to enable FK enforcement or negative to leave FK enforcement
+** unchanged. The second parameter is a pointer to an integer into which
+** is written 0 or 1 to indicate whether FK enforcement is off or on
+** following this call. The second parameter may be a NULL pointer, in
+** which case the FK enforcement setting is not reported back. </dd>
+**
+** <dt>SQLITE_DBCONFIG_ENABLE_TRIGGER</dt>
+** <dd> ^This option is used to enable or disable [CREATE TRIGGER | triggers].
+** There should be two additional arguments.
+** The first argument is an integer which is 0 to disable triggers,
+** positive to enable triggers or negative to leave the setting unchanged.
+** The second parameter is a pointer to an integer into which
+** is written 0 or 1 to indicate whether triggers are disabled or enabled
+** following this call. The second parameter may be a NULL pointer, in
+** which case the trigger setting is not reported back. </dd>
+**
** </dl>
*/
-#define SQLITE_DBCONFIG_LOOKASIDE 1001 /* void* int int */
+#define SQLITE_DBCONFIG_LOOKASIDE 1001 /* void* int int */
+#define SQLITE_DBCONFIG_ENABLE_FKEY 1002 /* int int* */
+#define SQLITE_DBCONFIG_ENABLE_TRIGGER 1003 /* int int* */
/*
@@ -2016,13 +2171,17 @@
**
** ^This routine returns the [rowid] of the most recent
** successful [INSERT] into the database from the [database connection]
-** in the first argument. ^If no successful [INSERT]s
+** in the first argument. ^As of SQLite version 3.7.7, this routines
+** records the last insert rowid of both ordinary tables and [virtual tables].
+** ^If no successful [INSERT]s
** have ever occurred on that database connection, zero is returned.
**
-** ^(If an [INSERT] occurs within a trigger, then the [rowid] of the inserted
-** row is returned by this routine as long as the trigger is running.
-** But once the trigger terminates, the value returned by this routine
-** reverts to the last value inserted before the trigger fired.)^
+** ^(If an [INSERT] occurs within a trigger or within a [virtual table]
+** method, then this routine will return the [rowid] of the inserted
+** row as long as the trigger or virtual table method is running.
+** But once the trigger or virtual table method ends, the value returned
+** by this routine reverts to what it was before the trigger or virtual
+** table method began.)^
**
** ^An [INSERT] that fails due to a constraint violation is not a
** successful [INSERT] and does not change the value returned by this
@@ -2385,7 +2544,7 @@
** NULL pointer if [sqlite3_malloc()] is unable to allocate enough
** memory to hold the resulting string.
**
-** ^(In sqlite3_snprintf() routine is similar to "snprintf()" from
+** ^(The sqlite3_snprintf() routine is similar to "snprintf()" from
** the standard C library. The result is written into the
** buffer supplied as the second parameter whose size is given by
** the first parameter. Note that the order of the
@@ -2404,12 +2563,14 @@
** the zero terminator. So the longest string that can be completely
** written will be n-1 characters.
**
+** ^The sqlite3_vsnprintf() routine is a varargs version of sqlite3_snprintf().
+**
** These routines all implement some additional formatting
** options that are useful for constructing SQL statements.
** All of the usual printf() formatting options apply. In addition, there
** is are "%q", "%Q", and "%z" options.
**
-** ^(The %q option works like %s in that it substitutes a null-terminated
+** ^(The %q option works like %s in that it substitutes a nul-terminated
** string from the argument list. But %q also doubles every '\'' character.
** %q is designed for use inside a string literal.)^ By doubling each '\''
** character it escapes that character and allows it to be inserted into
@@ -2467,6 +2628,7 @@
SQLITE_API char *sqlite3_mprintf(const char*,...);
SQLITE_API char *sqlite3_vmprintf(const char*, va_list);
SQLITE_API char *sqlite3_snprintf(int,char*,const char*, ...);
+SQLITE_API char *sqlite3_vsnprintf(int,char*,const char*, va_list);
/*
** CAPI3REF: Memory Allocation Subsystem
@@ -2591,7 +2753,7 @@
/*
** CAPI3REF: Compile-Time Authorization Callbacks
**
-** ^This routine registers a authorizer callback with a particular
+** ^This routine registers an authorizer callback with a particular
** [database connection], supplied in the first argument.
** ^The authorizer callback is invoked as SQL statements are being compiled
** by [sqlite3_prepare()] or its variants [sqlite3_prepare_v2()],
@@ -2682,6 +2844,9 @@
** to signal SQLite whether or not the action is permitted. See the
** [sqlite3_set_authorizer | authorizer documentation] for additional
** information.
+**
+** Note that SQLITE_IGNORE is also used as a [SQLITE_ROLLBACK | return code]
+** from the [sqlite3_vtab_on_conflict()] interface.
*/
#define SQLITE_DENY 1 /* Abort the SQL statement with an error */
#define SQLITE_IGNORE 2 /* Don't allow access, but don't generate an error */
@@ -2804,7 +2969,7 @@
/*
** CAPI3REF: Opening A New Database Connection
**
-** ^These routines open an SQLite database file whose name is given by the
+** ^These routines open an SQLite database file as specified by the
** filename argument. ^The filename argument is interpreted as UTF-8 for
** sqlite3_open() and sqlite3_open_v2() and as UTF-16 in the native byte
** order for sqlite3_open16(). ^(A [database connection] handle is usually
@@ -2831,7 +2996,7 @@
** sqlite3_open_v2() can take one of
** the following three values, optionally combined with the
** [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX], [SQLITE_OPEN_SHAREDCACHE],
-** and/or [SQLITE_OPEN_PRIVATECACHE] flags:)^
+** [SQLITE_OPEN_PRIVATECACHE], and/or [SQLITE_OPEN_URI] flags:)^
**
** <dl>
** ^(<dt>[SQLITE_OPEN_READONLY]</dt>
@@ -2844,15 +3009,14 @@
** case the database must already exist, otherwise an error is returned.</dd>)^
**
** ^(<dt>[SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]</dt>
-** <dd>The database is opened for reading and writing, and is creates it if
+** <dd>The database is opened for reading and writing, and is created if
** it does not already exist. This is the behavior that is always used for
** sqlite3_open() and sqlite3_open16().</dd>)^
** </dl>
**
** If the 3rd parameter to sqlite3_open_v2() is not one of the
-** combinations shown above or one of the combinations shown above combined
-** with the [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX],
-** [SQLITE_OPEN_SHAREDCACHE] and/or [SQLITE_OPEN_PRIVATECACHE] flags,
+** combinations shown above optionally combined with other
+** [SQLITE_OPEN_READONLY | SQLITE_OPEN_* bits]
** then the behavior is undefined.
**
** ^If the [SQLITE_OPEN_NOMUTEX] flag is set, then the database connection
@@ -2867,6 +3031,11 @@
** [SQLITE_OPEN_PRIVATECACHE] flag causes the database connection to not
** participate in [shared cache mode] even if it is enabled.
**
+** ^The fourth parameter to sqlite3_open_v2() is the name of the
+** [sqlite3_vfs] object that defines the operating system interface that
+** the new database connection should use. ^If the fourth parameter is
+** a NULL pointer then the default [sqlite3_vfs] object is used.
+**
** ^If the filename is ":memory:", then a private, temporary in-memory database
** is created for the connection. ^This in-memory database will vanish when
** the database connection is closed. Future versions of SQLite might
@@ -2879,10 +3048,111 @@
** on-disk database will be created. ^This private database will be
** automatically deleted as soon as the database connection is closed.
**
-** ^The fourth parameter to sqlite3_open_v2() is the name of the
-** [sqlite3_vfs] object that defines the operating system interface that
-** the new database connection should use. ^If the fourth parameter is
-** a NULL pointer then the default [sqlite3_vfs] object is used.
+** [[URI filenames in sqlite3_open()]] <h3>URI Filenames</h3>
+**
+** ^If [URI filename] interpretation is enabled, and the filename argument
+** begins with "file:", then the filename is interpreted as a URI. ^URI
+** filename interpretation is enabled if the [SQLITE_OPEN_URI] flag is
+** set in the fourth argument to sqlite3_open_v2(), or if it has
+** been enabled globally using the [SQLITE_CONFIG_URI] option with the
+** [sqlite3_config()] method or by the [SQLITE_USE_URI] compile-time option.
+** As of SQLite version 3.7.7, URI filename interpretation is turned off
+** by default, but future releases of SQLite might enable URI filename
+** interpretation by default. See "[URI filenames]" for additional
+** information.
+**
+** URI filenames are parsed according to RFC 3986. ^If the URI contains an
+** authority, then it must be either an empty string or the string
+** "localhost". ^If the authority is not an empty string or "localhost", an
+** error is returned to the caller. ^The fragment component of a URI, if
+** present, is ignored.
+**
+** ^SQLite uses the path component of the URI as the name of the disk file
+** which contains the database. ^If the path begins with a '/' character,
+** then it is interpreted as an absolute path. ^If the path does not begin
+** with a '/' (meaning that the authority section is omitted from the URI)
+** then the path is interpreted as a relative path.
+** ^On windows, the first component of an absolute path
+** is a drive specification (e.g. "C:").
+**
+** [[core URI query parameters]]
+** The query component of a URI may contain parameters that are interpreted
+** either by SQLite itself, or by a [VFS | custom VFS implementation].
+** SQLite interprets the following three query parameters:
+**
+** <ul>
+** <li> <b>vfs</b>: ^The "vfs" parameter may be used to specify the name of
+** a VFS object that provides the operating system interface that should
+** be used to access the database file on disk. ^If this option is set to
+** an empty string the default VFS object is used. ^Specifying an unknown
+** VFS is an error. ^If sqlite3_open_v2() is used and the vfs option is
+** present, then the VFS specified by the option takes precedence over
+** the value passed as the fourth parameter to sqlite3_open_v2().
+**
+** <li> <b>mode</b>: ^(The mode parameter may be set to either "ro", "rw" or
+** "rwc". Attempting to set it to any other value is an error)^.
+** ^If "ro" is specified, then the database is opened for read-only
+** access, just as if the [SQLITE_OPEN_READONLY] flag had been set in the
+** third argument to sqlite3_prepare_v2(). ^If the mode option is set to
+** "rw", then the database is opened for read-write (but not create)
+** access, as if SQLITE_OPEN_READWRITE (but not SQLITE_OPEN_CREATE) had
+** been set. ^Value "rwc" is equivalent to setting both
+** SQLITE_OPEN_READWRITE and SQLITE_OPEN_CREATE. ^If sqlite3_open_v2() is
+** used, it is an error to specify a value for the mode parameter that is
+** less restrictive than that specified by the flags passed as the third
+** parameter.
+**
+** <li> <b>cache</b>: ^The cache parameter may be set to either "shared" or
+** "private". ^Setting it to "shared" is equivalent to setting the
+** SQLITE_OPEN_SHAREDCACHE bit in the flags argument passed to
+** sqlite3_open_v2(). ^Setting the cache parameter to "private" is
+** equivalent to setting the SQLITE_OPEN_PRIVATECACHE bit.
+** ^If sqlite3_open_v2() is used and the "cache" parameter is present in
+** a URI filename, its value overrides any behaviour requested by setting
+** SQLITE_OPEN_PRIVATECACHE or SQLITE_OPEN_SHAREDCACHE flag.
+** </ul>
+**
+** ^Specifying an unknown parameter in the query component of a URI is not an
+** error. Future versions of SQLite might understand additional query
+** parameters. See "[query parameters with special meaning to SQLite]" for
+** additional information.
+**
+** [[URI filename examples]] <h3>URI filename examples</h3>
+**
+** <table border="1" align=center cellpadding=5>
+** <tr><th> URI filenames <th> Results
+** <tr><td> file:data.db <td>
+** Open the file "data.db" in the current directory.
+** <tr><td> file:/home/fred/data.db<br>
+** file:///home/fred/data.db <br>
+** file://localhost/home/fred/data.db <br> <td>
+** Open the database file "/home/fred/data.db".
+** <tr><td> file://darkstar/home/fred/data.db <td>
+** An error. "darkstar" is not a recognized authority.
+** <tr><td style="white-space:nowrap">
+** file:///C:/Documents%20and%20Settings/fred/Desktop/data.db
+** <td> Windows only: Open the file "data.db" on fred's desktop on drive
+** C:. Note that the %20 escaping in this example is not strictly
+** necessary - space characters can be used literally
+** in URI filenames.
+** <tr><td> file:data.db?mode=ro&cache=private <td>
+** Open file "data.db" in the current directory for read-only access.
+** Regardless of whether or not shared-cache mode is enabled by
+** default, use a private cache.
+** <tr><td> file:/home/fred/data.db?vfs=unix-nolock <td>
+** Open file "/home/fred/data.db". Use the special VFS "unix-nolock".
+** <tr><td> file:data.db?mode=readonly <td>
+** An error. "readonly" is not a valid option for the "mode" parameter.
+** </table>
+**
+** ^URI hexadecimal escape sequences (%HH) are supported within the path and
+** query components of a URI. A hexadecimal escape sequence consists of a
+** percent sign - "%" - followed by exactly two hexadecimal digits
+** specifying an octet value. ^Before the path or query components of a
+** URI filename are interpreted, they are encoded using UTF-8 and all
+** hexadecimal escape sequences replaced by a single byte containing the
+** corresponding octet. If this process generates an invalid UTF-8 encoding,
+** the results are undefined.
**
** <b>Note to Windows users:</b> The encoding used for the filename argument
** of sqlite3_open() and sqlite3_open_v2() must be UTF-8, not whatever
@@ -2906,6 +3176,45 @@
);
/*
+** CAPI3REF: Obtain Values For URI Parameters
+**
+** These are utility routines, useful to VFS implementations, that check
+** to see if a database file was a URI that contained a specific query
+** parameter, and if so obtains the value of that query parameter.
+**
+** If F is the database filename pointer passed into the xOpen() method of
+** a VFS implementation when the flags parameter to xOpen() has one or
+** more of the [SQLITE_OPEN_URI] or [SQLITE_OPEN_MAIN_DB] bits set and
+** P is the name of the query parameter, then
+** sqlite3_uri_parameter(F,P) returns the value of the P
+** parameter if it exists or a NULL pointer if P does not appear as a
+** query parameter on F. If P is a query parameter of F
+** has no explicit value, then sqlite3_uri_parameter(F,P) returns
+** a pointer to an empty string.
+**
+** The sqlite3_uri_boolean(F,P,B) routine assumes that P is a boolean
+** parameter and returns true (1) or false (0) according to the value
+** of P. The value of P is true if it is "yes" or "true" or "on" or
+** a non-zero number and is false otherwise. If P is not a query parameter
+** on F then sqlite3_uri_boolean(F,P,B) returns (B!=0).
+**
+** The sqlite3_uri_int64(F,P,D) routine converts the value of P into a
+** 64-bit signed integer and returns that integer, or D if P does not
+** exist. If the value of P is something other than an integer, then
+** zero is returned.
+**
+** If F is a NULL pointer, then sqlite3_uri_parameter(F,P) returns NULL and
+** sqlite3_uri_boolean(F,P,B) returns B. If F is not a NULL pointer and
+** is not a database file pathname pointer that SQLite passed into the xOpen
+** VFS method, then the behavior of this routine is undefined and probably
+** undesirable.
+*/
+SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam);
+SQLITE_API int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault);
+SQLITE_API sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int64);
+
+
+/*
** CAPI3REF: Error Codes And Messages
**
** ^The sqlite3_errcode() interface returns the numeric [result code] or
@@ -3020,43 +3329,45 @@
** Additional information is available at [limits | Limits in SQLite].
**
** <dl>
-** ^(<dt>SQLITE_LIMIT_LENGTH</dt>
+** [[SQLITE_LIMIT_LENGTH]] ^(<dt>SQLITE_LIMIT_LENGTH</dt>
** <dd>The maximum size of any string or BLOB or table row, in bytes.<dd>)^
**
-** ^(<dt>SQLITE_LIMIT_SQL_LENGTH</dt>
+** [[SQLITE_LIMIT_SQL_LENGTH]] ^(<dt>SQLITE_LIMIT_SQL_LENGTH</dt>
** <dd>The maximum length of an SQL statement, in bytes.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_COLUMN</dt>
+** [[SQLITE_LIMIT_COLUMN]] ^(<dt>SQLITE_LIMIT_COLUMN</dt>
** <dd>The maximum number of columns in a table definition or in the
** result set of a [SELECT] or the maximum number of columns in an index
** or in an ORDER BY or GROUP BY clause.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_EXPR_DEPTH</dt>
+** [[SQLITE_LIMIT_EXPR_DEPTH]] ^(<dt>SQLITE_LIMIT_EXPR_DEPTH</dt>
** <dd>The maximum depth of the parse tree on any expression.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_COMPOUND_SELECT</dt>
+** [[SQLITE_LIMIT_COMPOUND_SELECT]] ^(<dt>SQLITE_LIMIT_COMPOUND_SELECT</dt>
** <dd>The maximum number of terms in a compound SELECT statement.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_VDBE_OP</dt>
+** [[SQLITE_LIMIT_VDBE_OP]] ^(<dt>SQLITE_LIMIT_VDBE_OP</dt>
** <dd>The maximum number of instructions in a virtual machine program
** used to implement an SQL statement. This limit is not currently
** enforced, though that might be added in some future release of
** SQLite.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_FUNCTION_ARG</dt>
+** [[SQLITE_LIMIT_FUNCTION_ARG]] ^(<dt>SQLITE_LIMIT_FUNCTION_ARG</dt>
** <dd>The maximum number of arguments on a function.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_ATTACHED</dt>
+** [[SQLITE_LIMIT_ATTACHED]] ^(<dt>SQLITE_LIMIT_ATTACHED</dt>
** <dd>The maximum number of [ATTACH | attached databases].)^</dd>
**
+** [[SQLITE_LIMIT_LIKE_PATTERN_LENGTH]]
** ^(<dt>SQLITE_LIMIT_LIKE_PATTERN_LENGTH</dt>
** <dd>The maximum length of the pattern argument to the [LIKE] or
** [GLOB] operators.</dd>)^
**
+** [[SQLITE_LIMIT_VARIABLE_NUMBER]]
** ^(<dt>SQLITE_LIMIT_VARIABLE_NUMBER</dt>
** <dd>The maximum index number of any [parameter] in an SQL statement.)^
**
-** ^(<dt>SQLITE_LIMIT_TRIGGER_DEPTH</dt>
+** [[SQLITE_LIMIT_TRIGGER_DEPTH]] ^(<dt>SQLITE_LIMIT_TRIGGER_DEPTH</dt>
** <dd>The maximum depth of recursion for triggers.</dd>)^
** </dl>
*/
@@ -3096,7 +3407,8 @@
** that the supplied string is nul-terminated, then there is a small
** performance advantage to be gained by passing an nByte parameter that
** is equal to the number of bytes in the input string <i>including</i>
-** the nul-terminator bytes.
+** the nul-terminator bytes as this saves SQLite from having to
+** make a copy of the input string.
**
** ^If pzTail is not NULL then *pzTail is made to point to the first byte
** past the end of the first SQL statement in zSql. These routines only
@@ -3147,7 +3459,7 @@
** ^The specific value of WHERE-clause [parameter] might influence the
** choice of query plan if the parameter is the left-hand side of a [LIKE]
** or [GLOB] operator or if the parameter is compared to an indexed column
-** and the [SQLITE_ENABLE_STAT2] compile-time option is enabled.
+** and the [SQLITE_ENABLE_STAT3] compile-time option is enabled.
** the
** </li>
** </ol>
@@ -3194,17 +3506,53 @@
** CAPI3REF: Determine If An SQL Statement Writes The Database
**
** ^The sqlite3_stmt_readonly(X) interface returns true (non-zero) if
-** the [prepared statement] X is [SELECT] statement and false (zero) if
-** X is an [INSERT], [UPDATE], [DELETE], CREATE, DROP, [ANALYZE],
-** [ALTER], or [REINDEX] statement.
-** If X is a NULL pointer or any other kind of statement, including but
-** not limited to [ATTACH], [DETACH], [COMMIT], [ROLLBACK], [RELEASE],
-** [SAVEPOINT], [PRAGMA], or [VACUUM] the result of sqlite3_stmt_readonly(X) is
-** undefined.
+** and only if the [prepared statement] X makes no direct changes to
+** the content of the database file.
+**
+** Note that [application-defined SQL functions] or
+** [virtual tables] might change the database indirectly as a side effect.
+** ^(For example, if an application defines a function "eval()" that
+** calls [sqlite3_exec()], then the following SQL statement would
+** change the database file through side-effects:
+**
+** <blockquote><pre>
+** SELECT eval('DELETE FROM t1') FROM t2;
+** </pre></blockquote>
+**
+** But because the [SELECT] statement does not change the database file
+** directly, sqlite3_stmt_readonly() would still return true.)^
+**
+** ^Transaction control statements such as [BEGIN], [COMMIT], [ROLLBACK],
+** [SAVEPOINT], and [RELEASE] cause sqlite3_stmt_readonly() to return true,
+** since the statements themselves do not actually modify the database but
+** rather they control the timing of when other statements modify the
+** database. ^The [ATTACH] and [DETACH] statements also cause
+** sqlite3_stmt_readonly() to return true since, while those statements
+** change the configuration of a database connection, they do not make
+** changes to the content of the database files on disk.
*/
SQLITE_API int sqlite3_stmt_readonly(sqlite3_stmt *pStmt);
/*
+** CAPI3REF: Determine If A Prepared Statement Has Been Reset
+**
+** ^The sqlite3_stmt_busy(S) interface returns true (non-zero) if the
+** [prepared statement] S has been stepped at least once using
+** [sqlite3_step(S)] but has not run to completion and/or has not
+** been reset using [sqlite3_reset(S)]. ^The sqlite3_stmt_busy(S)
+** interface returns false if S is a NULL pointer. If S is not a
+** NULL pointer and is not a pointer to a valid [prepared statement]
+** object, then the behavior is undefined and probably undesirable.
+**
+** This interface can be used in combination [sqlite3_next_stmt()]
+** to locate all prepared statements associated with a database
+** connection that are in need of being reset. This can be used,
+** for example, in diagnostic routines to search for prepared
+** statements that are holding a transaction open.
+*/
+SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*);
+
+/*
** CAPI3REF: Dynamically Typed Value Object
** KEYWORDS: {protected sqlite3_value} {unprotected sqlite3_value}
**
@@ -3220,7 +3568,7 @@
** whether or not it requires a protected sqlite3_value.
**
** The terms "protected" and "unprotected" refer to whether or not
-** a mutex is held. A internal mutex is held for a protected
+** a mutex is held. An internal mutex is held for a protected
** sqlite3_value object but no mutex is held for an unprotected
** sqlite3_value object. If SQLite is compiled to be single-threaded
** (with [SQLITE_THREADSAFE=0] and with [sqlite3_threadsafe()] returning 0)
@@ -3300,6 +3648,13 @@
** number of <u>bytes</u> in the value, not the number of characters.)^
** ^If the fourth parameter is negative, the length of the string is
** the number of bytes up to the first zero terminator.
+** If a non-negative fourth parameter is provided to sqlite3_bind_text()
+** or sqlite3_bind_text16() then that parameter must be the byte offset
+** where the NUL terminator would occur assuming the string were NUL
+** terminated. If any NUL characters occur at byte offsets less than
+** the value of the fourth parameter then the resulting string value will
+** contain embedded NULs. The result of expressions involving strings
+** with embedded NULs is undefined.
**
** ^The fifth argument to sqlite3_bind_blob(), sqlite3_bind_text(), and
** sqlite3_bind_text16() is a destructor used to dispose of the BLOB or
@@ -3444,7 +3799,9 @@
** column number. ^The leftmost column is number 0.
**
** ^The returned string pointer is valid until either the [prepared statement]
-** is destroyed by [sqlite3_finalize()] or until the next call to
+** is destroyed by [sqlite3_finalize()] or until the statement is automatically
+** reprepared by the first call to [sqlite3_step()] for a particular run
+** or until the next call to
** sqlite3_column_name() or sqlite3_column_name16() on the same column.
**
** ^If sqlite3_malloc() fails during the processing of either routine
@@ -3470,7 +3827,9 @@
** the database name, the _table_ routines return the table name, and
** the origin_ routines return the column name.
** ^The returned string is valid until the [prepared statement] is destroyed
-** using [sqlite3_finalize()] or until the same information is requested
+** using [sqlite3_finalize()] or until the statement is automatically
+** reprepared by the first call to [sqlite3_step()] for a particular run
+** or until the same information is requested
** again in a different encoding.
**
** ^The names returned are the original un-aliased names of the
@@ -3564,7 +3923,7 @@
** ^[SQLITE_BUSY] means that the database engine was unable to acquire the
** database locks it needs to do its job. ^If the statement is a [COMMIT]
** or occurs outside of an explicit transaction, then you can retry the
-** statement. If the statement is not a [COMMIT] and occurs within a
+** statement. If the statement is not a [COMMIT] and occurs within an
** explicit transaction then you should rollback the transaction before
** continuing.
**
@@ -3594,13 +3953,17 @@
** be the case that the same database connection is being used by two or
** more threads at the same moment in time.
**
-** For all versions of SQLite up to and including 3.6.23.1, it was required
-** after sqlite3_step() returned anything other than [SQLITE_ROW] that
-** [sqlite3_reset()] be called before any subsequent invocation of
-** sqlite3_step(). Failure to invoke [sqlite3_reset()] in this way would
-** result in an [SQLITE_MISUSE] return from sqlite3_step(). But after
-** version 3.6.23.1, sqlite3_step() began calling [sqlite3_reset()]
-** automatically in this circumstance rather than returning [SQLITE_MISUSE].
+** For all versions of SQLite up to and including 3.6.23.1, a call to
+** [sqlite3_reset()] was required after sqlite3_step() returned anything
+** other than [SQLITE_ROW] before any subsequent invocation of
+** sqlite3_step(). Failure to reset the prepared statement using
+** [sqlite3_reset()] would result in an [SQLITE_MISUSE] return from
+** sqlite3_step(). But after version 3.6.23.1, sqlite3_step() began
+** calling [sqlite3_reset()] automatically in this circumstance rather
+** than returning [SQLITE_MISUSE]. This is not considered a compatibility
+** break because any application that ever receives an SQLITE_MISUSE error
+** is broken by definition. The [SQLITE_OMIT_AUTORESET] compile-time option
+** can be used to restore the legacy behavior.
**
** <b>Goofy Interface Alert:</b> In the legacy interface, the sqlite3_step()
** API always returns a generic error code, [SQLITE_ERROR], following any
@@ -3625,6 +3988,12 @@
** (via calls to the [sqlite3_column_int | sqlite3_column_*()] of
** interfaces) then sqlite3_data_count(P) returns 0.
** ^The sqlite3_data_count(P) routine also returns 0 if P is a NULL pointer.
+** ^The sqlite3_data_count(P) routine returns 0 if the previous call to
+** [sqlite3_step](P) returned [SQLITE_DONE]. ^The sqlite3_data_count(P)
+** will return non-zero if previous call to [sqlite3_step](P) returned
+** [SQLITE_ROW], except in the case of the [PRAGMA incremental_vacuum]
+** where it always returns zero since each step of that multi-step
+** pragma returns 0 columns of data.
**
** See also: [sqlite3_column_count()]
*/
@@ -3724,7 +4093,7 @@
** bytes in the string, not the number of characters.
**
** ^Strings returned by sqlite3_column_text() and sqlite3_column_text16(),
-** even empty strings, are always zero terminated. ^The return
+** even empty strings, are always zero-terminated. ^The return
** value from sqlite3_column_blob() for a zero-length BLOB is a NULL pointer.
**
** ^The object returned by [sqlite3_column_value()] is an
@@ -3839,7 +4208,7 @@
** CAPI3REF: Destroy A Prepared Statement Object
**
** ^The sqlite3_finalize() function is called to delete a [prepared statement].
-** ^If the most recent evaluation of the statement encountered no errors or
+** ^If the most recent evaluation of the statement encountered no errors
** or if the statement is never been evaluated, then sqlite3_finalize() returns
** SQLITE_OK. ^If the most recent evaluation of statement S failed, then
** sqlite3_finalize(S) returns the appropriate [error code] or
@@ -3898,7 +4267,7 @@
** are used to add SQL functions or aggregates or to redefine the behavior
** of existing SQL functions or aggregates. The only differences between
** these routines are the text encoding expected for
-** the the second parameter (the name of the function being created)
+** the second parameter (the name of the function being created)
** and the presence or absence of a destructor callback for
** the application data pointer.
**
@@ -3937,16 +4306,16 @@
** ^(The fifth parameter is an arbitrary pointer. The implementation of the
** function can gain access to this pointer using [sqlite3_user_data()].)^
**
-** ^The seventh, eighth and ninth parameters, xFunc, xStep and xFinal, are
+** ^The sixth, seventh and eighth parameters, xFunc, xStep and xFinal, are
** pointers to C-language functions that implement the SQL function or
** aggregate. ^A scalar SQL function requires an implementation of the xFunc
** callback only; NULL pointers must be passed as the xStep and xFinal
** parameters. ^An aggregate SQL function requires an implementation of xStep
** and xFinal and NULL pointer must be passed for xFunc. ^To delete an existing
-** SQL function or aggregate, pass NULL poiners for all three function
+** SQL function or aggregate, pass NULL pointers for all three function
** callbacks.
**
-** ^(If the tenth parameter to sqlite3_create_function_v2() is not NULL,
+** ^(If the ninth parameter to sqlite3_create_function_v2() is not NULL,
** then it is destructor for the application data pointer.
** The destructor is invoked when the function is deleted, either by being
** overloaded or when the database connection closes.)^
@@ -4050,7 +4419,7 @@
** The xFunc (for scalar functions) or xStep (for aggregates) parameters
** to [sqlite3_create_function()] and [sqlite3_create_function16()]
** define callbacks that implement the SQL functions and aggregates.
-** The 4th parameter to these callbacks is an array of pointers to
+** The 3rd parameter to these callbacks is an array of pointers to
** [protected sqlite3_value] objects. There is one [sqlite3_value] object for
** each parameter to the SQL function. These routines are used to
** extract values from the [sqlite3_value] objects.
@@ -4304,7 +4673,12 @@
** ^If the 3rd parameter to the sqlite3_result_text* interfaces
** is non-negative, then as many bytes (not characters) of the text
** pointed to by the 2nd parameter are taken as the application-defined
-** function result.
+** function result. If the 3rd parameter is non-negative, then it
+** must be the byte offset into the string where the NUL terminator would
+** appear if the string where NUL terminated. If any NUL characters occur
+** in the string at a byte offset that is less than the value of the 3rd
+** parameter, then the resulting string will contain embedded NULs and the
+** result of expressions operating on strings with embedded NULs is undefined.
** ^If the 4th parameter to the sqlite3_result_text* interfaces
** or sqlite3_result_blob is a non-NULL pointer, then SQLite calls that
** function as the destructor on the text or BLOB result when it has
@@ -4377,7 +4751,7 @@
** ^The [SQLITE_UTF16_ALIGNED] value for eTextRep forces strings to begin
** on an even byte address.
**
-** ^The fourth argument, pArg, is a application data pointer that is passed
+** ^The fourth argument, pArg, is an application data pointer that is passed
** through as the first argument to the collating function callback.
**
** ^The fifth argument, xCallback, is a pointer to the collating function.
@@ -4393,7 +4767,7 @@
** by the eTextRep argument. The collating function must return an
** integer that is negative, zero, or positive
** if the first string is less than, equal to, or greater than the second,
-** respectively. A collating function must alway return the same answer
+** respectively. A collating function must always return the same answer
** given the same inputs. If two or more collating functions are registered
** to the same collation name (using different eTextRep values) then all
** must give an equivalent answer when invoked with equivalent strings.
@@ -4620,6 +4994,22 @@
SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt*);
/*
+** CAPI3REF: Return The Filename For A Database Connection
+**
+** ^The sqlite3_db_filename(D,N) interface returns a pointer to a filename
+** associated with database N of connection D. ^The main database file
+** has the name "main". If there is no attached database N on the database
+** connection D, or if database N is a temporary or in-memory database, then
+** a NULL pointer is returned.
+**
+** ^The filename returned by this function is the output of the
+** xFullPathname method of the [VFS]. ^In other words, the filename
+** will be an absolute pathname, even if the filename used
+** to open the database originally was a URI or relative pathname.
+*/
+SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName);
+
+/*
** CAPI3REF: Find the next prepared statement
**
** ^This interface returns a pointer to the next [prepared statement] after
@@ -4654,13 +5044,15 @@
** on the same [database connection] D, or NULL for
** the first call for each function on D.
**
+** The commit and rollback hook callbacks are not reentrant.
** The callback implementation must not do anything that will modify
** the database connection that invoked the callback. Any actions
** to modify the database connection must be deferred until after the
** completion of the [sqlite3_step()] call that triggered the commit
** or rollback hook in the first place.
-** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their
-** database connections for the meaning of "modify" in this paragraph.
+** Note that running any other SQL statements, including SELECT statements,
+** or merely calling [sqlite3_prepare_v2()] and [sqlite3_step()] will modify
+** the database connections for the meaning of "modify" in this paragraph.
**
** ^Registering a NULL function disables the callback.
**
@@ -4773,10 +5165,25 @@
** which might be more or less than the amount requested.
** ^The sqlite3_release_memory() routine is a no-op returning zero
** if SQLite is not compiled with [SQLITE_ENABLE_MEMORY_MANAGEMENT].
+**
+** See also: [sqlite3_db_release_memory()]
*/
SQLITE_API int sqlite3_release_memory(int);
/*
+** CAPI3REF: Free Memory Used By A Database Connection
+**
+** ^The sqlite3_db_release_memory(D) interface attempts to free as much heap
+** memory as possible from database connection D. Unlike the
+** [sqlite3_release_memory()] interface, this interface is effect even
+** when then [SQLITE_ENABLE_MEMORY_MANAGEMENT] compile-time option is
+** omitted.
+**
+** See also: [sqlite3_release_memory()]
+*/
+SQLITE_API int sqlite3_db_release_memory(sqlite3*);
+
+/*
** CAPI3REF: Impose A Limit On Heap Size
**
** ^The sqlite3_soft_heap_limit64() interface sets and/or queries the
@@ -4790,7 +5197,8 @@
** is advisory only.
**
** ^The return value from sqlite3_soft_heap_limit64() is the size of
-** the soft heap limit prior to the call. ^If the argument N is negative
+** the soft heap limit prior to the call, or negative in the case of an
+** error. ^If the argument N is negative
** then no change is made to the soft heap limit. Hence, the current
** size of the soft heap limit can be determined by invoking
** sqlite3_soft_heap_limit64() with a negative argument.
@@ -4805,8 +5213,8 @@
** <li> Memory accounting is disabled using a combination of the
** [sqlite3_config]([SQLITE_CONFIG_MEMSTATUS],...) start-time option and
** the [SQLITE_DEFAULT_MEMSTATUS] compile-time option.
-** <li> An alternative page cache implementation is specifed using
-** [sqlite3_config]([SQLITE_CONFIG_PCACHE],...).
+** <li> An alternative page cache implementation is specified using
+** [sqlite3_config]([SQLITE_CONFIG_PCACHE2],...).
** <li> The page cache allocates from its own memory pool supplied
** by [sqlite3_config]([SQLITE_CONFIG_PAGECACHE],...) rather than
** from the heap.
@@ -5026,7 +5434,7 @@
** CAPI3REF: Virtual Table Object
** KEYWORDS: sqlite3_module {virtual table module}
**
-** This structure, sometimes called a a "virtual table module",
+** This structure, sometimes called a "virtual table module",
** defines the implementation of a [virtual tables].
** This structure consists mostly of methods for the module.
**
@@ -5066,6 +5474,11 @@
void (**pxFunc)(sqlite3_context*,int,sqlite3_value**),
void **ppArg);
int (*xRename)(sqlite3_vtab *pVtab, const char *zNew);
+ /* The methods above are in version 1 of the sqlite_module object. Those
+ ** below are for version 2 and greater. */
+ int (*xSavepoint)(sqlite3_vtab *pVTab, int);
+ int (*xRelease)(sqlite3_vtab *pVTab, int);
+ int (*xRollbackTo)(sqlite3_vtab *pVTab, int);
};
/*
@@ -5338,7 +5751,7 @@
** This is true if any column of the row is changed, even a column
** other than the one the BLOB handle is open on.)^
** ^Calls to [sqlite3_blob_read()] and [sqlite3_blob_write()] for
-** a expired BLOB handle fail with an return code of [SQLITE_ABORT].
+** an expired BLOB handle fail with a return code of [SQLITE_ABORT].
** ^(Changes written into a BLOB prior to the BLOB expiring are not
** rolled back by the expiration of the BLOB. Such changes will eventually
** commit if the transaction continues to completion.)^
@@ -5543,7 +5956,7 @@
**
** <ul>
** <li> SQLITE_MUTEX_OS2
-** <li> SQLITE_MUTEX_PTHREAD
+** <li> SQLITE_MUTEX_PTHREADS
** <li> SQLITE_MUTEX_W32
** <li> SQLITE_MUTEX_NOOP
** </ul>)^
@@ -5551,7 +5964,7 @@
** ^The SQLITE_MUTEX_NOOP implementation is a set of routines
** that does no real locking and is appropriate for use in
** a single-threaded application. ^The SQLITE_MUTEX_OS2,
-** SQLITE_MUTEX_PTHREAD, and SQLITE_MUTEX_W32 implementations
+** SQLITE_MUTEX_PTHREADS, and SQLITE_MUTEX_W32 implementations
** are appropriate for use on OS/2, Unix, and Windows.
**
** ^(If SQLite is compiled with the SQLITE_MUTEX_APPDEF preprocessor
@@ -5741,14 +6154,14 @@
** ^These routines should return true if the mutex in their argument
** is held or not held, respectively, by the calling thread.
**
-** ^The implementation is not required to provided versions of these
+** ^The implementation is not required to provide versions of these
** routines that actually work. If the implementation does not provide working
** versions of these routines, it should at least provide stubs that always
** return true so that one does not get spurious assertion failures.
**
** ^If the argument to sqlite3_mutex_held() is a NULL pointer then
** the routine should return 1. This seems counter-intuitive since
-** clearly the mutex cannot be held if it does not exist. But the
+** clearly the mutex cannot be held if it does not exist. But
** the reason the mutex does not exist is because the build is not
** using mutexes. And we do not want the assert() containing the
** call to sqlite3_mutex_held() to fail, so a non-zero return is
@@ -5778,7 +6191,8 @@
#define SQLITE_MUTEX_STATIC_OPEN 4 /* sqlite3BtreeOpen() */
#define SQLITE_MUTEX_STATIC_PRNG 5 /* sqlite3_random() */
#define SQLITE_MUTEX_STATIC_LRU 6 /* lru page list */
-#define SQLITE_MUTEX_STATIC_LRU2 7 /* lru page list */
+#define SQLITE_MUTEX_STATIC_LRU2 7 /* NOT USED */
+#define SQLITE_MUTEX_STATIC_PMEM 7 /* sqlite3PageMalloc() */
/*
** CAPI3REF: Retrieve the mutex for a database connection
@@ -5868,9 +6282,10 @@
#define SQLITE_TESTCTRL_RESERVE 14
#define SQLITE_TESTCTRL_OPTIMIZATIONS 15
#define SQLITE_TESTCTRL_ISKEYWORD 16
-#define SQLITE_TESTCTRL_PGHDRSZ 17
-#define SQLITE_TESTCTRL_SCRATCHMALLOC 18
-#define SQLITE_TESTCTRL_LAST 18
+#define SQLITE_TESTCTRL_SCRATCHMALLOC 17
+#define SQLITE_TESTCTRL_LOCALTIME_FAULT 18
+#define SQLITE_TESTCTRL_EXPLAIN_STMT 19
+#define SQLITE_TESTCTRL_LAST 19
/*
** CAPI3REF: SQLite Runtime Status
@@ -5879,7 +6294,7 @@
** about the performance of SQLite, and optionally to reset various
** highwater marks. ^The first argument is an integer code for
** the specific parameter to measure. ^(Recognized integer codes
-** are of the form [SQLITE_STATUS_MEMORY_USED | SQLITE_STATUS_...].)^
+** are of the form [status parameters | SQLITE_STATUS_...].)^
** ^The current value of the parameter is returned into *pCurrent.
** ^The highest recorded value is returned in *pHighwater. ^If the
** resetFlag is true, then the highest record value is reset after
@@ -5906,12 +6321,13 @@
/*
** CAPI3REF: Status Parameters
+** KEYWORDS: {status parameters}
**
** These integer constants designate various run-time status parameters
** that can be returned by [sqlite3_status()].
**
** <dl>
-** ^(<dt>SQLITE_STATUS_MEMORY_USED</dt>
+** [[SQLITE_STATUS_MEMORY_USED]] ^(<dt>SQLITE_STATUS_MEMORY_USED</dt>
** <dd>This parameter is the current amount of memory checked out
** using [sqlite3_malloc()], either directly or indirectly. The
** figure includes calls made to [sqlite3_malloc()] by the application
@@ -5921,22 +6337,24 @@
** this parameter. The amount returned is the sum of the allocation
** sizes as reported by the xSize method in [sqlite3_mem_methods].</dd>)^
**
-** ^(<dt>SQLITE_STATUS_MALLOC_SIZE</dt>
+** [[SQLITE_STATUS_MALLOC_SIZE]] ^(<dt>SQLITE_STATUS_MALLOC_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [sqlite3_malloc()] or [sqlite3_realloc()] (or their
** internal equivalents). Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_MALLOC_COUNT</dt>
-** <dd>This parameter records the number of separate memory allocations.</dd>)^
+** [[SQLITE_STATUS_MALLOC_COUNT]] ^(<dt>SQLITE_STATUS_MALLOC_COUNT</dt>
+** <dd>This parameter records the number of separate memory allocations
+** currently checked out.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_PAGECACHE_USED</dt>
+** [[SQLITE_STATUS_PAGECACHE_USED]] ^(<dt>SQLITE_STATUS_PAGECACHE_USED</dt>
** <dd>This parameter returns the number of pages used out of the
** [pagecache memory allocator] that was configured using
** [SQLITE_CONFIG_PAGECACHE]. The
** value returned is in pages, not in bytes.</dd>)^
**
+** [[SQLITE_STATUS_PAGECACHE_OVERFLOW]]
** ^(<dt>SQLITE_STATUS_PAGECACHE_OVERFLOW</dt>
** <dd>This parameter returns the number of bytes of page cache
** allocation which could not be satisfied by the [SQLITE_CONFIG_PAGECACHE]
@@ -5946,13 +6364,13 @@
** [SQLITE_CONFIG_PAGECACHE]) and allocations that overflowed because
** no space was left in the page cache.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_PAGECACHE_SIZE</dt>
+** [[SQLITE_STATUS_PAGECACHE_SIZE]] ^(<dt>SQLITE_STATUS_PAGECACHE_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [pagecache memory allocator]. Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_SCRATCH_USED</dt>
+** [[SQLITE_STATUS_SCRATCH_USED]] ^(<dt>SQLITE_STATUS_SCRATCH_USED</dt>
** <dd>This parameter returns the number of allocations used out of the
** [scratch memory allocator] configured using
** [SQLITE_CONFIG_SCRATCH]. The value returned is in allocations, not
@@ -5960,7 +6378,7 @@
** outstanding at time, this parameter also reports the number of threads
** using scratch memory at the same time.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_SCRATCH_OVERFLOW</dt>
+** [[SQLITE_STATUS_SCRATCH_OVERFLOW]] ^(<dt>SQLITE_STATUS_SCRATCH_OVERFLOW</dt>
** <dd>This parameter returns the number of bytes of scratch memory
** allocation which could not be satisfied by the [SQLITE_CONFIG_SCRATCH]
** buffer and where forced to overflow to [sqlite3_malloc()]. The values
@@ -5970,13 +6388,13 @@
** slots were available.
** </dd>)^
**
-** ^(<dt>SQLITE_STATUS_SCRATCH_SIZE</dt>
+** [[SQLITE_STATUS_SCRATCH_SIZE]] ^(<dt>SQLITE_STATUS_SCRATCH_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [scratch memory allocator]. Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_PARSER_STACK</dt>
+** [[SQLITE_STATUS_PARSER_STACK]] ^(<dt>SQLITE_STATUS_PARSER_STACK</dt>
** <dd>This parameter records the deepest parser stack. It is only
** meaningful if SQLite is compiled with [YYTRACKMAXSTACKDEPTH].</dd>)^
** </dl>
@@ -6001,9 +6419,9 @@
** about a single [database connection]. ^The first argument is the
** database connection object to be interrogated. ^The second argument
** is an integer constant, taken from the set of
-** [SQLITE_DBSTATUS_LOOKASIDE_USED | SQLITE_DBSTATUS_*] macros, that
+** [SQLITE_DBSTATUS options], that
** determines the parameter to interrogate. The set of
-** [SQLITE_DBSTATUS_LOOKASIDE_USED | SQLITE_DBSTATUS_*] macros is likely
+** [SQLITE_DBSTATUS options] is likely
** to grow in future releases of SQLite.
**
** ^The current value of the requested parameter is written into *pCur
@@ -6020,6 +6438,7 @@
/*
** CAPI3REF: Status Parameters for database connections
+** KEYWORDS: {SQLITE_DBSTATUS options}
**
** These constants are the available integer "verbs" that can be passed as
** the second argument to the [sqlite3_db_status()] interface.
@@ -6031,16 +6450,37 @@
** if a discontinued or unsupported verb is invoked.
**
** <dl>
-** ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_USED</dt>
+** [[SQLITE_DBSTATUS_LOOKASIDE_USED]] ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_USED</dt>
** <dd>This parameter returns the number of lookaside memory slots currently
** checked out.</dd>)^
**
-** ^(<dt>SQLITE_DBSTATUS_CACHE_USED</dt>
+** [[SQLITE_DBSTATUS_LOOKASIDE_HIT]] ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_HIT</dt>
+** <dd>This parameter returns the number malloc attempts that were
+** satisfied using lookaside memory. Only the high-water value is meaningful;
+** the current value is always zero.)^
+**
+** [[SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE]]
+** ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE</dt>
+** <dd>This parameter returns the number malloc attempts that might have
+** been satisfied using lookaside memory but failed due to the amount of
+** memory requested being larger than the lookaside slot size.
+** Only the high-water value is meaningful;
+** the current value is always zero.)^
+**
+** [[SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL]]
+** ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL</dt>
+** <dd>This parameter returns the number malloc attempts that might have
+** been satisfied using lookaside memory but failed due to all lookaside
+** memory already being in use.
+** Only the high-water value is meaningful;
+** the current value is always zero.)^
+**
+** [[SQLITE_DBSTATUS_CACHE_USED]] ^(<dt>SQLITE_DBSTATUS_CACHE_USED</dt>
** <dd>This parameter returns the approximate number of of bytes of heap
** memory used by all pager caches associated with the database connection.)^
** ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_USED is always 0.
**
-** ^(<dt>SQLITE_DBSTATUS_SCHEMA_USED</dt>
+** [[SQLITE_DBSTATUS_SCHEMA_USED]] ^(<dt>SQLITE_DBSTATUS_SCHEMA_USED</dt>
** <dd>This parameter returns the approximate number of of bytes of heap
** memory used to store the schema for all databases associated
** with the connection - main, temp, and any [ATTACH]-ed databases.)^
@@ -6049,26 +6489,43 @@
** [shared cache mode] being enabled.
** ^The highwater mark associated with SQLITE_DBSTATUS_SCHEMA_USED is always 0.
**
-** ^(<dt>SQLITE_DBSTATUS_STMT_USED</dt>
+** [[SQLITE_DBSTATUS_STMT_USED]] ^(<dt>SQLITE_DBSTATUS_STMT_USED</dt>
** <dd>This parameter returns the approximate number of of bytes of heap
** and lookaside memory used by all prepared statements associated with
** the database connection.)^
** ^The highwater mark associated with SQLITE_DBSTATUS_STMT_USED is always 0.
** </dd>
+**
+** [[SQLITE_DBSTATUS_CACHE_HIT]] ^(<dt>SQLITE_DBSTATUS_CACHE_HIT</dt>
+** <dd>This parameter returns the number of pager cache hits that have
+** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_HIT
+** is always 0.
+** </dd>
+**
+** [[SQLITE_DBSTATUS_CACHE_MISS]] ^(<dt>SQLITE_DBSTATUS_CACHE_MISS</dt>
+** <dd>This parameter returns the number of pager cache misses that have
+** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_MISS
+** is always 0.
+** </dd>
** </dl>
*/
-#define SQLITE_DBSTATUS_LOOKASIDE_USED 0
-#define SQLITE_DBSTATUS_CACHE_USED 1
-#define SQLITE_DBSTATUS_SCHEMA_USED 2
-#define SQLITE_DBSTATUS_STMT_USED 3
-#define SQLITE_DBSTATUS_MAX 3 /* Largest defined DBSTATUS */
+#define SQLITE_DBSTATUS_LOOKASIDE_USED 0
+#define SQLITE_DBSTATUS_CACHE_USED 1
+#define SQLITE_DBSTATUS_SCHEMA_USED 2
+#define SQLITE_DBSTATUS_STMT_USED 3
+#define SQLITE_DBSTATUS_LOOKASIDE_HIT 4
+#define SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE 5
+#define SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL 6
+#define SQLITE_DBSTATUS_CACHE_HIT 7
+#define SQLITE_DBSTATUS_CACHE_MISS 8
+#define SQLITE_DBSTATUS_MAX 8 /* Largest defined DBSTATUS */
/*
** CAPI3REF: Prepared Statement Status
**
** ^(Each prepared statement maintains various
-** [SQLITE_STMTSTATUS_SORT | counters] that measure the number
+** [SQLITE_STMTSTATUS counters] that measure the number
** of times it has performed specific operations.)^ These counters can
** be used to monitor the performance characteristics of the prepared
** statements. For example, if the number of table steps greatly exceeds
@@ -6079,7 +6536,7 @@
** ^(This interface is used to retrieve and reset counter values from
** a [prepared statement]. The first argument is the prepared statement
** object to be interrogated. The second argument
-** is an integer code for a specific [SQLITE_STMTSTATUS_SORT | counter]
+** is an integer code for a specific [SQLITE_STMTSTATUS counter]
** to be interrogated.)^
** ^The current value of the requested counter is returned.
** ^If the resetFlg is true, then the counter is reset to zero after this
@@ -6091,30 +6548,30 @@
/*
** CAPI3REF: Status Parameters for prepared statements
+** KEYWORDS: {SQLITE_STMTSTATUS counter} {SQLITE_STMTSTATUS counters}
**
** These preprocessor macros define integer codes that name counter
** values associated with the [sqlite3_stmt_status()] interface.
** The meanings of the various counters are as follows:
**
** <dl>
-** <dt>SQLITE_STMTSTATUS_FULLSCAN_STEP</dt>
+** [[SQLITE_STMTSTATUS_FULLSCAN_STEP]] <dt>SQLITE_STMTSTATUS_FULLSCAN_STEP</dt>
** <dd>^This is the number of times that SQLite has stepped forward in
** a table as part of a full table scan. Large numbers for this counter
** may indicate opportunities for performance improvement through
** careful use of indices.</dd>
**
-** <dt>SQLITE_STMTSTATUS_SORT</dt>
+** [[SQLITE_STMTSTATUS_SORT]] <dt>SQLITE_STMTSTATUS_SORT</dt>
** <dd>^This is the number of sort operations that have occurred.
** A non-zero value in this counter may indicate an opportunity to
** improvement performance through careful use of indices.</dd>
**
-** <dt>SQLITE_STMTSTATUS_AUTOINDEX</dt>
+** [[SQLITE_STMTSTATUS_AUTOINDEX]] <dt>SQLITE_STMTSTATUS_AUTOINDEX</dt>
** <dd>^This is the number of rows inserted into transient indices that
** were created automatically in order to help joins run faster.
** A non-zero value in this counter may indicate an opportunity to
** improvement performance by adding permanent indices that do not
** need to be reinitialized each time the statement is run.</dd>
-**
** </dl>
*/
#define SQLITE_STMTSTATUS_FULLSCAN_STEP 1
@@ -6130,17 +6587,33 @@
** sqlite3_pcache object except by holding and passing pointers
** to the object.
**
-** See [sqlite3_pcache_methods] for additional information.
+** See [sqlite3_pcache_methods2] for additional information.
*/
typedef struct sqlite3_pcache sqlite3_pcache;
/*
+** CAPI3REF: Custom Page Cache Object
+**
+** The sqlite3_pcache_page object represents a single page in the
+** page cache. The page cache will allocate instances of this
+** object. Various methods of the page cache use pointers to instances
+** of this object as parameters or as their return value.
+**
+** See [sqlite3_pcache_methods2] for additional information.
+*/
+typedef struct sqlite3_pcache_page sqlite3_pcache_page;
+struct sqlite3_pcache_page {
+ void *pBuf; /* The content of the page */
+ void *pExtra; /* Extra information associated with the page */
+};
+
+/*
** CAPI3REF: Application Defined Page Cache.
** KEYWORDS: {page cache}
**
-** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE], ...) interface can
+** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE2], ...) interface can
** register an alternative page cache implementation by passing in an
-** instance of the sqlite3_pcache_methods structure.)^
+** instance of the sqlite3_pcache_methods2 structure.)^
** In many applications, most of the heap memory allocated by
** SQLite is used for the page cache.
** By implementing a
@@ -6154,21 +6627,23 @@
** extreme measure that is only needed by the most demanding applications.
** The built-in page cache is recommended for most uses.
**
-** ^(The contents of the sqlite3_pcache_methods structure are copied to an
+** ^(The contents of the sqlite3_pcache_methods2 structure are copied to an
** internal buffer by SQLite within the call to [sqlite3_config]. Hence
** the application may discard the parameter after the call to
** [sqlite3_config()] returns.)^
**
+** [[the xInit() page cache method]]
** ^(The xInit() method is called once for each effective
** call to [sqlite3_initialize()])^
** (usually only once during the lifetime of the process). ^(The xInit()
-** method is passed a copy of the sqlite3_pcache_methods.pArg value.)^
+** method is passed a copy of the sqlite3_pcache_methods2.pArg value.)^
** The intent of the xInit() method is to set up global data structures
** required by the custom page cache implementation.
** ^(If the xInit() method is NULL, then the
** built-in default page cache is used instead of the application defined
** page cache.)^
**
+** [[the xShutdown() page cache method]]
** ^The xShutdown() method is called by [sqlite3_shutdown()].
** It can be used to clean up
** any outstanding resources before process shutdown, if required.
@@ -6183,19 +6658,20 @@
** ^SQLite will never invoke xInit() more than once without an intervening
** call to xShutdown().
**
+** [[the xCreate() page cache methods]]
** ^SQLite invokes the xCreate() method to construct a new cache instance.
** SQLite will typically create one cache instance for each open database file,
** though this is not guaranteed. ^The
** first parameter, szPage, is the size in bytes of the pages that must
-** be allocated by the cache. ^szPage will not be a power of two. ^szPage
-** will the page size of the database file that is to be cached plus an
-** increment (here called "R") of about 100 or 200. SQLite will use the
-** extra R bytes on each page to store metadata about the underlying
-** database page on disk. The value of R depends
+** be allocated by the cache. ^szPage will always a power of two. ^The
+** second parameter szExtra is a number of bytes of extra storage
+** associated with each page cache entry. ^The szExtra parameter will
+** a number less than 250. SQLite will use the
+** extra szExtra bytes on each page to store metadata about the underlying
+** database page on disk. The value passed into szExtra depends
** on the SQLite version, the target platform, and how SQLite was compiled.
-** ^R is constant for a particular build of SQLite. ^The second argument to
-** xCreate(), bPurgeable, is true if the cache being created will
-** be used to cache database pages of a file stored on disk, or
+** ^The third argument to xCreate(), bPurgeable, is true if the cache being
+** created will be used to cache database pages of a file stored on disk, or
** false if it is used for an in-memory database. The cache implementation
** does not have to do anything special based with the value of bPurgeable;
** it is purely advisory. ^On a cache where bPurgeable is false, SQLite will
@@ -6205,6 +6681,7 @@
** ^Hence, a cache created with bPurgeable false will
** never contain any unpinned pages.
**
+** [[the xCachesize() page cache method]]
** ^(The xCachesize() method may be called at any time by SQLite to set the
** suggested maximum cache-size (number of pages stored by) the cache
** instance passed as the first argument. This is the value configured using
@@ -6212,20 +6689,27 @@
** parameter, the implementation is not required to do anything with this
** value; it is advisory only.
**
+** [[the xPagecount() page cache methods]]
** The xPagecount() method must return the number of pages currently
** stored in the cache, both pinned and unpinned.
**
+** [[the xFetch() page cache methods]]
** The xFetch() method locates a page in the cache and returns a pointer to
-** the page, or a NULL pointer.
-** A "page", in this context, means a buffer of szPage bytes aligned at an
-** 8-byte boundary. The page to be fetched is determined by the key. ^The
-** mimimum key value is 1. After it has been retrieved using xFetch, the page
-** is considered to be "pinned".
+** an sqlite3_pcache_page object associated with that page, or a NULL pointer.
+** The pBuf element of the returned sqlite3_pcache_page object will be a
+** pointer to a buffer of szPage bytes used to store the content of a
+** single database page. The pExtra element of sqlite3_pcache_page will be
+** a pointer to the szExtra bytes of extra storage that SQLite has requested
+** for each entry in the page cache.
+**
+** The page to be fetched is determined by the key. ^The minimum key value
+** is 1. After it has been retrieved using xFetch, the page is considered
+** to be "pinned".
**
** If the requested page is already in the page cache, then the page cache
** implementation must return a pointer to the page buffer with its content
** intact. If the requested page is not already in the cache, then the
-** behavior of the cache implementation should use the value of the createFlag
+** cache implementation should use the value of the createFlag
** parameter to help it determined what action to take:
**
** <table border=1 width=85% align=center>
@@ -6243,6 +6727,7 @@
** attempt to unpin one or more cache pages by spilling the content of
** pinned pages to disk and synching the operating system disk cache.
**
+** [[the xUnpin() page cache method]]
** ^xUnpin() is called by SQLite with a pointer to a currently pinned page
** as its second argument. If the third parameter, discard, is non-zero,
** then the page must be evicted from the cache.
@@ -6255,6 +6740,7 @@
** call to xUnpin() unpins the page regardless of the number of prior calls
** to xFetch().
**
+** [[the xRekey() page cache methods]]
** The xRekey() method is used to change the key value associated with the
** page passed as the second argument. If the cache
** previously contains an entry associated with newKey, it must be
@@ -6267,11 +6753,41 @@
** of these pages are pinned, they are implicitly unpinned, meaning that
** they can be safely discarded.
**
+** [[the xDestroy() page cache method]]
** ^The xDestroy() method is used to delete a cache allocated by xCreate().
** All resources associated with the specified cache should be freed. ^After
** calling the xDestroy() method, SQLite considers the [sqlite3_pcache*]
-** handle invalid, and will not use it with any other sqlite3_pcache_methods
+** handle invalid, and will not use it with any other sqlite3_pcache_methods2
** functions.
+**
+** [[the xShrink() page cache method]]
+** ^SQLite invokes the xShrink() method when it wants the page cache to
+** free up as much of heap memory as possible. The page cache implementation
+** is not obligated to free any memory, but well-behaved implementations should
+** do their best.
+*/
+typedef struct sqlite3_pcache_methods2 sqlite3_pcache_methods2;
+struct sqlite3_pcache_methods2 {
+ int iVersion;
+ void *pArg;
+ int (*xInit)(void*);
+ void (*xShutdown)(void*);
+ sqlite3_pcache *(*xCreate)(int szPage, int szExtra, int bPurgeable);
+ void (*xCachesize)(sqlite3_pcache*, int nCachesize);
+ int (*xPagecount)(sqlite3_pcache*);
+ sqlite3_pcache_page *(*xFetch)(sqlite3_pcache*, unsigned key, int createFlag);
+ void (*xUnpin)(sqlite3_pcache*, sqlite3_pcache_page*, int discard);
+ void (*xRekey)(sqlite3_pcache*, sqlite3_pcache_page*,
+ unsigned oldKey, unsigned newKey);
+ void (*xTruncate)(sqlite3_pcache*, unsigned iLimit);
+ void (*xDestroy)(sqlite3_pcache*);
+ void (*xShrink)(sqlite3_pcache*);
+};
+
+/*
+** This is the obsolete pcache_methods object that has now been replaced
+** by sqlite3_pcache_methods2. This object is not used by SQLite. It is
+** retained in the header file for backwards compatibility only.
*/
typedef struct sqlite3_pcache_methods sqlite3_pcache_methods;
struct sqlite3_pcache_methods {
@@ -6288,6 +6804,7 @@
void (*xDestroy)(sqlite3_pcache*);
};
+
/*
** CAPI3REF: Online Backup Object
**
@@ -6309,11 +6826,12 @@
**
** See Also: [Using the SQLite Online Backup API]
**
-** ^Exclusive access is required to the destination database for the
-** duration of the operation. ^However the source database is only
-** read-locked while it is actually being read; it is not locked
-** continuously for the entire backup operation. ^Thus, the backup may be
-** performed on a live source database without preventing other users from
+** ^SQLite holds a write transaction open on the destination database file
+** for the duration of the backup operation.
+** ^The source database is read-locked only while it is being read;
+** it is not locked continuously for the entire backup operation.
+** ^Thus, the backup may be performed on a live source database without
+** preventing other database connections from
** reading or writing to the source database while the backup is underway.
**
** ^(To perform a backup operation:
@@ -6328,7 +6846,7 @@
** There should be exactly one call to sqlite3_backup_finish() for each
** successful call to sqlite3_backup_init().
**
-** <b>sqlite3_backup_init()</b>
+** [[sqlite3_backup_init()]] <b>sqlite3_backup_init()</b>
**
** ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the
** [database connection] associated with the destination database
@@ -6340,11 +6858,11 @@
** sqlite3_backup_init(D,N,S,M) identify the [database connection]
** and database name of the source database, respectively.
** ^The source and destination [database connections] (parameters S and D)
-** must be different or else sqlite3_backup_init(D,N,S,M) will file with
+** must be different or else sqlite3_backup_init(D,N,S,M) will fail with
** an error.
**
** ^If an error occurs within sqlite3_backup_init(D,N,S,M), then NULL is
-** returned and an error code and error message are store3d in the
+** returned and an error code and error message are stored in the
** destination [database connection] D.
** ^The error code and message for the failed call to sqlite3_backup_init()
** can be retrieved using the [sqlite3_errcode()], [sqlite3_errmsg()], and/or
@@ -6355,13 +6873,13 @@
** sqlite3_backup_finish() functions to perform the specified backup
** operation.
**
-** <b>sqlite3_backup_step()</b>
+** [[sqlite3_backup_step()]] <b>sqlite3_backup_step()</b>
**
** ^Function sqlite3_backup_step(B,N) will copy up to N pages between
** the source and destination databases specified by [sqlite3_backup] object B.
** ^If N is negative, all remaining source pages are copied.
** ^If sqlite3_backup_step(B,N) successfully copies N pages and there
-** are still more pages to be copied, then the function resturns [SQLITE_OK].
+** are still more pages to be copied, then the function returns [SQLITE_OK].
** ^If sqlite3_backup_step(B,N) successfully finishes copying all pages
** from source to destination, then it returns [SQLITE_DONE].
** ^If an error occurs while running sqlite3_backup_step(B,N),
@@ -6375,7 +6893,7 @@
** <li> the destination database was opened read-only, or
** <li> the destination database is using write-ahead-log journaling
** and the destination and source page sizes differ, or
-** <li> The destination database is an in-memory database and the
+** <li> the destination database is an in-memory database and the
** destination and source page sizes differ.
** </ol>)^
**
@@ -6412,7 +6930,7 @@
** by the backup operation, then the backup database is automatically
** updated at the same time.
**
-** <b>sqlite3_backup_finish()</b>
+** [[sqlite3_backup_finish()]] <b>sqlite3_backup_finish()</b>
**
** When sqlite3_backup_step() has returned [SQLITE_DONE], or when the
** application wishes to abandon the backup operation, the application
@@ -6435,7 +6953,8 @@
** is not a permanent error and does not affect the return value of
** sqlite3_backup_finish().
**
-** <b>sqlite3_backup_remaining(), sqlite3_backup_pagecount()</b>
+** [[sqlite3_backup__remaining()]] [[sqlite3_backup_pagecount()]]
+** <b>sqlite3_backup_remaining() and sqlite3_backup_pagecount()</b>
**
** ^Each call to sqlite3_backup_step() sets two values inside
** the [sqlite3_backup] object: the number of pages still to be backed
@@ -6706,7 +7225,8 @@
** from SQL.
**
** ^Every new [database connection] defaults to having the auto-checkpoint
-** enabled with a threshold of 1000 pages. The use of this interface
+** enabled with a threshold of 1000 or [SQLITE_DEFAULT_WAL_AUTOCHECKPOINT]
+** pages. The use of this interface
** is only necessary if the default setting is found to be suboptimal
** for a particular application.
*/
@@ -6725,10 +7245,190 @@
** from SQL. ^The [sqlite3_wal_autocheckpoint()] interface and the
** [wal_autocheckpoint pragma] can be used to cause this interface to be
** run whenever the WAL reaches a certain size threshold.
+**
+** See also: [sqlite3_wal_checkpoint_v2()]
*/
SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb);
/*
+** CAPI3REF: Checkpoint a database
+**
+** Run a checkpoint operation on WAL database zDb attached to database
+** handle db. The specific operation is determined by the value of the
+** eMode parameter:
+**
+** <dl>
+** <dt>SQLITE_CHECKPOINT_PASSIVE<dd>
+** Checkpoint as many frames as possible without waiting for any database
+** readers or writers to finish. Sync the db file if all frames in the log
+** are checkpointed. This mode is the same as calling
+** sqlite3_wal_checkpoint(). The busy-handler callback is never invoked.
+**
+** <dt>SQLITE_CHECKPOINT_FULL<dd>
+** This mode blocks (calls the busy-handler callback) until there is no
+** database writer and all readers are reading from the most recent database
+** snapshot. It then checkpoints all frames in the log file and syncs the
+** database file. This call blocks database writers while it is running,
+** but not database readers.
+**
+** <dt>SQLITE_CHECKPOINT_RESTART<dd>
+** This mode works the same way as SQLITE_CHECKPOINT_FULL, except after
+** checkpointing the log file it blocks (calls the busy-handler callback)
+** until all readers are reading from the database file only. This ensures
+** that the next client to write to the database file restarts the log file
+** from the beginning. This call blocks database writers while it is running,
+** but not database readers.
+** </dl>
+**
+** If pnLog is not NULL, then *pnLog is set to the total number of frames in
+** the log file before returning. If pnCkpt is not NULL, then *pnCkpt is set to
+** the total number of checkpointed frames (including any that were already
+** checkpointed when this function is called). *pnLog and *pnCkpt may be
+** populated even if sqlite3_wal_checkpoint_v2() returns other than SQLITE_OK.
+** If no values are available because of an error, they are both set to -1
+** before returning to communicate this to the caller.
+**
+** All calls obtain an exclusive "checkpoint" lock on the database file. If
+** any other process is running a checkpoint operation at the same time, the
+** lock cannot be obtained and SQLITE_BUSY is returned. Even if there is a
+** busy-handler configured, it will not be invoked in this case.
+**
+** The SQLITE_CHECKPOINT_FULL and RESTART modes also obtain the exclusive
+** "writer" lock on the database file. If the writer lock cannot be obtained
+** immediately, and a busy-handler is configured, it is invoked and the writer
+** lock retried until either the busy-handler returns 0 or the lock is
+** successfully obtained. The busy-handler is also invoked while waiting for
+** database readers as described above. If the busy-handler returns 0 before
+** the writer lock is obtained or while waiting for database readers, the
+** checkpoint operation proceeds from that point in the same way as
+** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible
+** without blocking any further. SQLITE_BUSY is returned in this case.
+**
+** If parameter zDb is NULL or points to a zero length string, then the
+** specified operation is attempted on all WAL databases. In this case the
+** values written to output parameters *pnLog and *pnCkpt are undefined. If
+** an SQLITE_BUSY error is encountered when processing one or more of the
+** attached WAL databases, the operation is still attempted on any remaining
+** attached databases and SQLITE_BUSY is returned to the caller. If any other
+** error occurs while processing an attached database, processing is abandoned
+** and the error code returned to the caller immediately. If no error
+** (SQLITE_BUSY or otherwise) is encountered while processing the attached
+** databases, SQLITE_OK is returned.
+**
+** If database zDb is the name of an attached database that is not in WAL
+** mode, SQLITE_OK is returned and both *pnLog and *pnCkpt set to -1. If
+** zDb is not NULL (or a zero length string) and is not the name of any
+** attached database, SQLITE_ERROR is returned to the caller.
+*/
+SQLITE_API int sqlite3_wal_checkpoint_v2(
+ sqlite3 *db, /* Database handle */
+ const char *zDb, /* Name of attached database (or NULL) */
+ int eMode, /* SQLITE_CHECKPOINT_* value */
+ int *pnLog, /* OUT: Size of WAL log in frames */
+ int *pnCkpt /* OUT: Total number of frames checkpointed */
+);
+
+/*
+** CAPI3REF: Checkpoint operation parameters
+**
+** These constants can be used as the 3rd parameter to
+** [sqlite3_wal_checkpoint_v2()]. See the [sqlite3_wal_checkpoint_v2()]
+** documentation for additional information about the meaning and use of
+** each of these values.
+*/
+#define SQLITE_CHECKPOINT_PASSIVE 0
+#define SQLITE_CHECKPOINT_FULL 1
+#define SQLITE_CHECKPOINT_RESTART 2
+
+/*
+** CAPI3REF: Virtual Table Interface Configuration
+**
+** This function may be called by either the [xConnect] or [xCreate] method
+** of a [virtual table] implementation to configure
+** various facets of the virtual table interface.
+**
+** If this interface is invoked outside the context of an xConnect or
+** xCreate virtual table method then the behavior is undefined.
+**
+** At present, there is only one option that may be configured using
+** this function. (See [SQLITE_VTAB_CONSTRAINT_SUPPORT].) Further options
+** may be added in the future.
+*/
+SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...);
+
+/*
+** CAPI3REF: Virtual Table Configuration Options
+**
+** These macros define the various options to the
+** [sqlite3_vtab_config()] interface that [virtual table] implementations
+** can use to customize and optimize their behavior.
+**
+** <dl>
+** <dt>SQLITE_VTAB_CONSTRAINT_SUPPORT
+** <dd>Calls of the form
+** [sqlite3_vtab_config](db,SQLITE_VTAB_CONSTRAINT_SUPPORT,X) are supported,
+** where X is an integer. If X is zero, then the [virtual table] whose
+** [xCreate] or [xConnect] method invoked [sqlite3_vtab_config()] does not
+** support constraints. In this configuration (which is the default) if
+** a call to the [xUpdate] method returns [SQLITE_CONSTRAINT], then the entire
+** statement is rolled back as if [ON CONFLICT | OR ABORT] had been
+** specified as part of the users SQL statement, regardless of the actual
+** ON CONFLICT mode specified.
+**
+** If X is non-zero, then the virtual table implementation guarantees
+** that if [xUpdate] returns [SQLITE_CONSTRAINT], it will do so before
+** any modifications to internal or persistent data structures have been made.
+** If the [ON CONFLICT] mode is ABORT, FAIL, IGNORE or ROLLBACK, SQLite
+** is able to roll back a statement or database transaction, and abandon
+** or continue processing the current SQL statement as appropriate.
+** If the ON CONFLICT mode is REPLACE and the [xUpdate] method returns
+** [SQLITE_CONSTRAINT], SQLite handles this as if the ON CONFLICT mode
+** had been ABORT.
+**
+** Virtual table implementations that are required to handle OR REPLACE
+** must do so within the [xUpdate] method. If a call to the
+** [sqlite3_vtab_on_conflict()] function indicates that the current ON
+** CONFLICT policy is REPLACE, the virtual table implementation should
+** silently replace the appropriate rows within the xUpdate callback and
+** return SQLITE_OK. Or, if this is not possible, it may return
+** SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT
+** constraint handling.
+** </dl>
+*/
+#define SQLITE_VTAB_CONSTRAINT_SUPPORT 1
+
+/*
+** CAPI3REF: Determine The Virtual Table Conflict Policy
+**
+** This function may only be called from within a call to the [xUpdate] method
+** of a [virtual table] implementation for an INSERT or UPDATE operation. ^The
+** value returned is one of [SQLITE_ROLLBACK], [SQLITE_IGNORE], [SQLITE_FAIL],
+** [SQLITE_ABORT], or [SQLITE_REPLACE], according to the [ON CONFLICT] mode
+** of the SQL statement that triggered the call to the [xUpdate] method of the
+** [virtual table].
+*/
+SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *);
+
+/*
+** CAPI3REF: Conflict resolution modes
+**
+** These constants are returned by [sqlite3_vtab_on_conflict()] to
+** inform a [virtual table] implementation what the [ON CONFLICT] mode
+** is for the SQL statement being evaluated.
+**
+** Note that the [SQLITE_IGNORE] constant is also used as a potential
+** return value from the [sqlite3_set_authorizer()] callback and that
+** [SQLITE_ABORT] is also a [result code].
+*/
+#define SQLITE_ROLLBACK 1
+/* #define SQLITE_IGNORE 2 // Also used by sqlite3_authorizer() callback */
+#define SQLITE_FAIL 3
+/* #define SQLITE_ABORT 4 // Also an error code */
+#define SQLITE_REPLACE 5
+
+
+
+/*
** Undo the hack that converts floating point types to integer for
** builds on processors without floating point support.
*/
@@ -7108,7 +7808,7 @@
*/
#define SQLITE_MAX_FILE_FORMAT 4
#ifndef SQLITE_DEFAULT_FILE_FORMAT
-# define SQLITE_DEFAULT_FILE_FORMAT 1
+# define SQLITE_DEFAULT_FILE_FORMAT 4
#endif
/*
@@ -7207,6 +7907,18 @@
#define SQLITE_MAX_U32 ((((u64)1)<<32)-1)
/*
+** The datatype used to store estimates of the number of rows in a
+** table or index. This is an unsigned integer type. For 99.9% of
+** the world, a 32-bit integer is sufficient. But a 64-bit integer
+** can be used at compile-time if desired.
+*/
+#ifdef SQLITE_64BIT_STATS
+ typedef u64 tRowcnt; /* 64-bit only if requested at compile-time */
+#else
+ typedef u32 tRowcnt; /* 32-bit is the default */
+#endif
+
+/*
** Macros to determine whether the machine is big or little endian,
** evaluated at runtime.
*/
@@ -7393,6 +8105,7 @@
typedef struct TriggerStep TriggerStep;
typedef struct UnpackedRecord UnpackedRecord;
typedef struct VTable VTable;
+typedef struct VtabCtx VtabCtx;
typedef struct Walker Walker;
typedef struct WherePlan WherePlan;
typedef struct WhereInfo WhereInfo;
@@ -7446,21 +8159,10 @@
typedef struct Btree Btree;
typedef struct BtCursor BtCursor;
typedef struct BtShared BtShared;
-typedef struct BtreeMutexArray BtreeMutexArray;
-
-/*
-** This structure records all of the Btrees that need to hold
-** a mutex before we enter sqlite3VdbeExec(). The Btrees are
-** are placed in aBtree[] in order of aBtree[]->pBt. That way,
-** we can always lock and unlock them all quickly.
-*/
-struct BtreeMutexArray {
- int nMutex;
- Btree *aBtree[SQLITE_MAX_ATTACHED+1];
-};
SQLITE_PRIVATE int sqlite3BtreeOpen(
+ sqlite3_vfs *pVfs, /* VFS to use with this b-tree */
const char *zFilename, /* Name of database file to open */
sqlite3 *db, /* Associated database connection */
Btree **ppBtree, /* Return open Btree* here */
@@ -7494,7 +8196,7 @@
SQLITE_PRIVATE int sqlite3BtreeGetAutoVacuum(Btree *);
SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree*,int);
SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree*, const char *zMaster);
-SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree*);
+SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree*, int);
SQLITE_PRIVATE int sqlite3BtreeCommit(Btree*);
SQLITE_PRIVATE int sqlite3BtreeRollback(Btree*);
SQLITE_PRIVATE int sqlite3BtreeBeginStmt(Btree*,int);
@@ -7614,7 +8316,7 @@
#endif
#ifndef SQLITE_OMIT_WAL
-SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree*);
+SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree*, int, int *, int *);
#endif
/*
@@ -7631,30 +8333,28 @@
#endif
#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE
+SQLITE_PRIVATE int sqlite3BtreeSharable(Btree*);
SQLITE_PRIVATE void sqlite3BtreeLeave(Btree*);
SQLITE_PRIVATE void sqlite3BtreeEnterCursor(BtCursor*);
SQLITE_PRIVATE void sqlite3BtreeLeaveCursor(BtCursor*);
SQLITE_PRIVATE void sqlite3BtreeLeaveAll(sqlite3*);
-SQLITE_PRIVATE void sqlite3BtreeMutexArrayEnter(BtreeMutexArray*);
-SQLITE_PRIVATE void sqlite3BtreeMutexArrayLeave(BtreeMutexArray*);
-SQLITE_PRIVATE void sqlite3BtreeMutexArrayInsert(BtreeMutexArray*, Btree*);
#ifndef NDEBUG
/* These routines are used inside assert() statements only. */
SQLITE_PRIVATE int sqlite3BtreeHoldsMutex(Btree*);
SQLITE_PRIVATE int sqlite3BtreeHoldsAllMutexes(sqlite3*);
+SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3*,int,Schema*);
#endif
#else
+# define sqlite3BtreeSharable(X) 0
# define sqlite3BtreeLeave(X)
# define sqlite3BtreeEnterCursor(X)
# define sqlite3BtreeLeaveCursor(X)
# define sqlite3BtreeLeaveAll(X)
-# define sqlite3BtreeMutexArrayEnter(X)
-# define sqlite3BtreeMutexArrayLeave(X)
-# define sqlite3BtreeMutexArrayInsert(X,Y)
# define sqlite3BtreeHoldsMutex(X) 1
# define sqlite3BtreeHoldsAllMutexes(X) 1
+# define sqlite3SchemaMutexHeld(X,Y,Z) 1
#endif
@@ -7683,6 +8383,7 @@
*/
#ifndef _SQLITE_VDBE_H_
#define _SQLITE_VDBE_H_
+/* #include <stdio.h> */
/*
** A single VDBE is an opaque structure named "Vdbe". Only routines
@@ -7726,6 +8427,7 @@
KeyInfo *pKeyInfo; /* Used when p4type is P4_KEYINFO */
int *ai; /* Used when p4type is P4_INTARRAY */
SubProgram *pProgram; /* Used when p4type is P4_SUBPROGRAM */
+ int (*xAdvance)(BtCursor *, int *);
} p4;
#ifdef SQLITE_DEBUG
char *zComment; /* Comment to improve readability */
@@ -7746,6 +8448,7 @@
int nOp; /* Elements in aOp[] */
int nMem; /* Number of memory cells required */
int nCsr; /* Number of cursors required */
+ int nOnce; /* Number of OP_Once instructions */
void *token; /* id that may be used to recursive triggers */
SubProgram *pNext; /* Next sub-program already visited */
};
@@ -7773,7 +8476,7 @@
#define P4_KEYINFO (-6) /* P4 is a pointer to a KeyInfo structure */
#define P4_VDBEFUNC (-7) /* P4 is a pointer to a VdbeFunc structure */
#define P4_MEM (-8) /* P4 is a pointer to a Mem* structure */
-#define P4_TRANSIENT (-9) /* P4 is a pointer to a transient string */
+#define P4_TRANSIENT 0 /* P4 is a pointer to a transient string */
#define P4_VTAB (-10) /* P4 is a pointer to an sqlite3_vtab structure */
#define P4_MPRINTF (-11) /* P4 is a string obtained from sqlite3_mprintf() */
#define P4_REAL (-12) /* P4 is a 64-bit floating point value */
@@ -7781,6 +8484,7 @@
#define P4_INT32 (-14) /* P4 is a 32-bit signed integer */
#define P4_INTARRAY (-15) /* P4 is a vector of 32-bit integers */
#define P4_SUBPROGRAM (-18) /* P4 is a pointer to a SubProgram structure */
+#define P4_ADVANCE (-19) /* P4 is a pointer to BtreeNext() or BtreePrev() */
/* When adding a P4 argument using P4_KEYINFO, a copy of the KeyInfo structure
** is made. That copy is freed when the Vdbe is finalized. But if the
@@ -7878,102 +8582,105 @@
#define OP_Or 68 /* same as TK_OR */
#define OP_Not 19 /* same as TK_NOT */
#define OP_BitNot 93 /* same as TK_BITNOT */
-#define OP_If 26
-#define OP_IfNot 27
+#define OP_Once 26
+#define OP_If 27
+#define OP_IfNot 28
#define OP_IsNull 73 /* same as TK_ISNULL */
#define OP_NotNull 74 /* same as TK_NOTNULL */
-#define OP_Column 28
-#define OP_Affinity 29
-#define OP_MakeRecord 30
-#define OP_Count 31
-#define OP_Savepoint 32
-#define OP_AutoCommit 33
-#define OP_Transaction 34
-#define OP_ReadCookie 35
-#define OP_SetCookie 36
-#define OP_VerifyCookie 37
-#define OP_OpenRead 38
-#define OP_OpenWrite 39
-#define OP_OpenAutoindex 40
-#define OP_OpenEphemeral 41
-#define OP_OpenPseudo 42
-#define OP_Close 43
-#define OP_SeekLt 44
-#define OP_SeekLe 45
-#define OP_SeekGe 46
-#define OP_SeekGt 47
-#define OP_Seek 48
-#define OP_NotFound 49
-#define OP_Found 50
-#define OP_IsUnique 51
-#define OP_NotExists 52
-#define OP_Sequence 53
-#define OP_NewRowid 54
-#define OP_Insert 55
-#define OP_InsertInt 56
-#define OP_Delete 57
-#define OP_ResetCount 58
-#define OP_RowKey 59
-#define OP_RowData 60
-#define OP_Rowid 61
-#define OP_NullRow 62
-#define OP_Last 63
-#define OP_Sort 64
-#define OP_Rewind 65
-#define OP_Prev 66
-#define OP_Next 67
-#define OP_IdxInsert 70
-#define OP_IdxDelete 71
-#define OP_IdxRowid 72
-#define OP_IdxLT 81
-#define OP_IdxGE 92
-#define OP_Destroy 95
-#define OP_Clear 96
-#define OP_CreateIndex 97
-#define OP_CreateTable 98
-#define OP_ParseSchema 99
-#define OP_LoadAnalysis 100
-#define OP_DropTable 101
-#define OP_DropIndex 102
-#define OP_DropTrigger 103
-#define OP_IntegrityCk 104
-#define OP_RowSetAdd 105
-#define OP_RowSetRead 106
-#define OP_RowSetTest 107
-#define OP_Program 108
-#define OP_Param 109
-#define OP_FkCounter 110
-#define OP_FkIfZero 111
-#define OP_MemMax 112
-#define OP_IfPos 113
-#define OP_IfNeg 114
-#define OP_IfZero 115
-#define OP_AggStep 116
-#define OP_AggFinal 117
-#define OP_Checkpoint 118
-#define OP_JournalMode 119
-#define OP_Vacuum 120
-#define OP_IncrVacuum 121
-#define OP_Expire 122
-#define OP_TableLock 123
-#define OP_VBegin 124
-#define OP_VCreate 125
-#define OP_VDestroy 126
-#define OP_VOpen 127
-#define OP_VFilter 128
-#define OP_VColumn 129
-#define OP_VNext 131
-#define OP_VRename 132
-#define OP_VUpdate 133
-#define OP_Pagecount 134
-#define OP_MaxPgcnt 135
-#define OP_Trace 136
-#define OP_Noop 137
-#define OP_Explain 138
-
-/* The following opcode values are never used */
-#define OP_NotUsed_139 139
-#define OP_NotUsed_140 140
+#define OP_Column 29
+#define OP_Affinity 30
+#define OP_MakeRecord 31
+#define OP_Count 32
+#define OP_Savepoint 33
+#define OP_AutoCommit 34
+#define OP_Transaction 35
+#define OP_ReadCookie 36
+#define OP_SetCookie 37
+#define OP_VerifyCookie 38
+#define OP_OpenRead 39
+#define OP_OpenWrite 40
+#define OP_OpenAutoindex 41
+#define OP_OpenEphemeral 42
+#define OP_SorterOpen 43
+#define OP_OpenPseudo 44
+#define OP_Close 45
+#define OP_SeekLt 46
+#define OP_SeekLe 47
+#define OP_SeekGe 48
+#define OP_SeekGt 49
+#define OP_Seek 50
+#define OP_NotFound 51
+#define OP_Found 52
+#define OP_IsUnique 53
+#define OP_NotExists 54
+#define OP_Sequence 55
+#define OP_NewRowid 56
+#define OP_Insert 57
+#define OP_InsertInt 58
+#define OP_Delete 59
+#define OP_ResetCount 60
+#define OP_SorterCompare 61
+#define OP_SorterData 62
+#define OP_RowKey 63
+#define OP_RowData 64
+#define OP_Rowid 65
+#define OP_NullRow 66
+#define OP_Last 67
+#define OP_SorterSort 70
+#define OP_Sort 71
+#define OP_Rewind 72
+#define OP_SorterNext 81
+#define OP_Prev 92
+#define OP_Next 95
+#define OP_SorterInsert 96
+#define OP_IdxInsert 97
+#define OP_IdxDelete 98
+#define OP_IdxRowid 99
+#define OP_IdxLT 100
+#define OP_IdxGE 101
+#define OP_Destroy 102
+#define OP_Clear 103
+#define OP_CreateIndex 104
+#define OP_CreateTable 105
+#define OP_ParseSchema 106
+#define OP_LoadAnalysis 107
+#define OP_DropTable 108
+#define OP_DropIndex 109
+#define OP_DropTrigger 110
+#define OP_IntegrityCk 111
+#define OP_RowSetAdd 112
+#define OP_RowSetRead 113
+#define OP_RowSetTest 114
+#define OP_Program 115
+#define OP_Param 116
+#define OP_FkCounter 117
+#define OP_FkIfZero 118
+#define OP_MemMax 119
+#define OP_IfPos 120
+#define OP_IfNeg 121
+#define OP_IfZero 122
+#define OP_AggStep 123
+#define OP_AggFinal 124
+#define OP_Checkpoint 125
+#define OP_JournalMode 126
+#define OP_Vacuum 127
+#define OP_IncrVacuum 128
+#define OP_Expire 129
+#define OP_TableLock 131
+#define OP_VBegin 132
+#define OP_VCreate 133
+#define OP_VDestroy 134
+#define OP_VOpen 135
+#define OP_VFilter 136
+#define OP_VColumn 137
+#define OP_VNext 138
+#define OP_VRename 139
+#define OP_VUpdate 140
+#define OP_Pagecount 146
+#define OP_MaxPgcnt 147
+#define OP_Trace 148
+#define OP_Noop 149
+#define OP_Explain 150
/* Properties such as "out2" or "jump" that are specified in
@@ -7988,25 +8695,25 @@
#define OPFLG_OUT2 0x0020 /* out2: P2 is an output */
#define OPFLG_OUT3 0x0040 /* out3: P3 is an output */
#define OPFLG_INITIALIZER {\
-/* 0 */ 0x00, 0x01, 0x05, 0x04, 0x04, 0x10, 0x00, 0x02,\
+/* 0 */ 0x00, 0x01, 0x01, 0x04, 0x04, 0x10, 0x00, 0x02,\
/* 8 */ 0x02, 0x02, 0x02, 0x02, 0x02, 0x00, 0x24, 0x24,\
/* 16 */ 0x00, 0x00, 0x00, 0x24, 0x04, 0x05, 0x04, 0x00,\
-/* 24 */ 0x00, 0x01, 0x05, 0x05, 0x00, 0x00, 0x00, 0x02,\
-/* 32 */ 0x00, 0x00, 0x00, 0x02, 0x10, 0x00, 0x00, 0x00,\
-/* 40 */ 0x00, 0x00, 0x00, 0x00, 0x11, 0x11, 0x11, 0x11,\
-/* 48 */ 0x08, 0x11, 0x11, 0x11, 0x11, 0x02, 0x02, 0x00,\
-/* 56 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01,\
-/* 64 */ 0x01, 0x01, 0x01, 0x01, 0x4c, 0x4c, 0x08, 0x00,\
-/* 72 */ 0x02, 0x05, 0x05, 0x15, 0x15, 0x15, 0x15, 0x15,\
+/* 24 */ 0x00, 0x01, 0x01, 0x05, 0x05, 0x00, 0x00, 0x00,\
+/* 32 */ 0x02, 0x00, 0x00, 0x00, 0x02, 0x10, 0x00, 0x00,\
+/* 40 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x11,\
+/* 48 */ 0x11, 0x11, 0x08, 0x11, 0x11, 0x11, 0x11, 0x02,\
+/* 56 */ 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
+/* 64 */ 0x00, 0x02, 0x00, 0x01, 0x4c, 0x4c, 0x01, 0x01,\
+/* 72 */ 0x01, 0x05, 0x05, 0x15, 0x15, 0x15, 0x15, 0x15,\
/* 80 */ 0x15, 0x01, 0x4c, 0x4c, 0x4c, 0x4c, 0x4c, 0x4c,\
-/* 88 */ 0x4c, 0x4c, 0x4c, 0x4c, 0x01, 0x24, 0x02, 0x02,\
-/* 96 */ 0x00, 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,\
-/* 104 */ 0x00, 0x0c, 0x45, 0x15, 0x01, 0x02, 0x00, 0x01,\
-/* 112 */ 0x08, 0x05, 0x05, 0x05, 0x00, 0x00, 0x00, 0x02,\
-/* 120 */ 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
-/* 128 */ 0x01, 0x00, 0x02, 0x01, 0x00, 0x00, 0x02, 0x02,\
-/* 136 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04,\
-/* 144 */ 0x04, 0x04,}
+/* 88 */ 0x4c, 0x4c, 0x4c, 0x4c, 0x01, 0x24, 0x02, 0x01,\
+/* 96 */ 0x08, 0x08, 0x00, 0x02, 0x01, 0x01, 0x02, 0x00,\
+/* 104 */ 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
+/* 112 */ 0x0c, 0x45, 0x15, 0x01, 0x02, 0x00, 0x01, 0x08,\
+/* 120 */ 0x05, 0x05, 0x05, 0x00, 0x00, 0x00, 0x02, 0x00,\
+/* 128 */ 0x01, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,\
+/* 136 */ 0x01, 0x00, 0x01, 0x00, 0x00, 0x04, 0x04, 0x04,\
+/* 144 */ 0x04, 0x04, 0x02, 0x02, 0x00, 0x00, 0x00,}
/************** End of opcodes.h *********************************************/
/************** Continuing where we left off in vdbe.h ***********************/
@@ -8023,12 +8730,13 @@
SQLITE_PRIVATE int sqlite3VdbeAddOp4(Vdbe*,int,int,int,int,const char *zP4,int);
SQLITE_PRIVATE int sqlite3VdbeAddOp4Int(Vdbe*,int,int,int,int,int);
SQLITE_PRIVATE int sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp);
-SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, int addr, int P1);
-SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, int addr, int P2);
-SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, int addr, int P3);
+SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*);
+SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, u32 addr, int P1);
+SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, u32 addr, int P2);
+SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, u32 addr, int P3);
SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe*, u8 P5);
SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe*, int addr);
-SQLITE_PRIVATE void sqlite3VdbeChangeToNoop(Vdbe*, int addr, int N);
+SQLITE_PRIVATE void sqlite3VdbeChangeToNoop(Vdbe*, int addr);
SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe*, int addr, const char *zP4, int N);
SQLITE_PRIVATE void sqlite3VdbeUsesBtree(Vdbe*, int);
SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetOp(Vdbe*, int);
@@ -8036,7 +8744,7 @@
SQLITE_PRIVATE void sqlite3VdbeRunOnlyOnce(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeDeleteObject(sqlite3*,Vdbe*);
-SQLITE_PRIVATE void sqlite3VdbeMakeReady(Vdbe*,int,int,int,int,int,int);
+SQLITE_PRIVATE void sqlite3VdbeMakeReady(Vdbe*,Parse*);
SQLITE_PRIVATE int sqlite3VdbeFinalize(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeResolveLabel(Vdbe*, int);
SQLITE_PRIVATE int sqlite3VdbeCurrentAddr(Vdbe*);
@@ -8045,6 +8753,7 @@
SQLITE_PRIVATE void sqlite3VdbeTrace(Vdbe*,FILE*);
#endif
SQLITE_PRIVATE void sqlite3VdbeResetStepResult(Vdbe*);
+SQLITE_PRIVATE void sqlite3VdbeRewind(Vdbe*);
SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeSetNumCols(Vdbe*,int);
SQLITE_PRIVATE int sqlite3VdbeSetColName(Vdbe*, int, int, const char *, void(*)(void*));
@@ -8059,9 +8768,9 @@
SQLITE_PRIVATE char *sqlite3VdbeExpandSql(Vdbe*, const char*);
#endif
-SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeRecordUnpack(KeyInfo*,int,const void*,char*,int);
-SQLITE_PRIVATE void sqlite3VdbeDeleteUnpackedRecord(UnpackedRecord*);
+SQLITE_PRIVATE void sqlite3VdbeRecordUnpack(KeyInfo*,int,const void*,UnpackedRecord*);
SQLITE_PRIVATE int sqlite3VdbeRecordCompare(int,const void*,UnpackedRecord*);
+SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeAllocUnpackedRecord(KeyInfo *, char *, int, char **);
#ifndef SQLITE_OMIT_TRIGGER
SQLITE_PRIVATE void sqlite3VdbeLinkSubProgram(Vdbe *, SubProgram *);
@@ -8189,6 +8898,7 @@
SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager*, u32*, int);
SQLITE_PRIVATE int sqlite3PagerMaxPageCount(Pager*, int);
SQLITE_PRIVATE void sqlite3PagerSetCachesize(Pager*, int);
+SQLITE_PRIVATE void sqlite3PagerShrink(Pager*);
SQLITE_PRIVATE void sqlite3PagerSetSafetyLevel(Pager*,int,int,int);
SQLITE_PRIVATE int sqlite3PagerLockingMode(Pager *, int);
SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *, int);
@@ -8224,7 +8934,7 @@
SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint);
SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager);
-SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager);
+SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager, int, int*, int*);
SQLITE_PRIVATE int sqlite3PagerWalSupported(Pager *pPager);
SQLITE_PRIVATE int sqlite3PagerWalCallback(Pager *pPager);
SQLITE_PRIVATE int sqlite3PagerOpenWal(Pager *pPager, int *pisOpen);
@@ -8241,6 +8951,8 @@
SQLITE_PRIVATE int sqlite3PagerNosync(Pager*);
SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager*);
SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager*);
+SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *, int, int, int *);
+SQLITE_PRIVATE void sqlite3PagerClearCache(Pager *);
/* Functions used to truncate the database file. */
SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager*,Pgno);
@@ -8295,7 +9007,8 @@
** structure.
*/
struct PgHdr {
- void *pData; /* Content of this page */
+ sqlite3_pcache_page *pPage; /* Pcache object page handle */
+ void *pData; /* Page data */
void *pExtra; /* Extra content */
PgHdr *pDirty; /* Transient list of dirty pages */
Pgno pgno; /* Page number for this page */
@@ -8413,6 +9126,9 @@
SQLITE_PRIVATE int sqlite3PcacheGetCachesize(PCache *);
#endif
+/* Free up as much memory as possible from the page cache */
+SQLITE_PRIVATE void sqlite3PcacheShrink(PCache*);
+
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
/* Try to return memory used by the pcache module to the main memory heap */
SQLITE_PRIVATE int sqlite3PcacheReleaseMemory(int);
@@ -8499,17 +9215,6 @@
#endif
/*
-** Determine if we are dealing with WindowsCE - which has a much
-** reduced API.
-*/
-#if defined(_WIN32_WCE)
-# define SQLITE_OS_WINCE 1
-#else
-# define SQLITE_OS_WINCE 0
-#endif
-
-
-/*
** Define the maximum size of a temporary filename
*/
#if SQLITE_OS_WIN
@@ -8533,6 +9238,25 @@
# define SQLITE_TEMPNAME_SIZE 200
#endif
+/*
+** Determine if we are dealing with Windows NT.
+*/
+#if defined(_WIN32_WINNT)
+# define SQLITE_OS_WINNT 1
+#else
+# define SQLITE_OS_WINNT 0
+#endif
+
+/*
+** Determine if we are dealing with WindowsCE - which has a much
+** reduced API.
+*/
+#if defined(_WIN32_WCE)
+# define SQLITE_OS_WINCE 1
+#else
+# define SQLITE_OS_WINCE 0
+#endif
+
/* If the SET_FULLSYNC macro is not defined above, then make it
** a no-op
*/
@@ -8544,7 +9268,7 @@
** The default size of a disk sector
*/
#ifndef SQLITE_DEFAULT_SECTOR_SIZE
-# define SQLITE_DEFAULT_SECTOR_SIZE 512
+# define SQLITE_DEFAULT_SECTOR_SIZE 4096
#endif
/*
@@ -8677,6 +9401,7 @@
SQLITE_PRIVATE int sqlite3OsUnlock(sqlite3_file*, int);
SQLITE_PRIVATE int sqlite3OsCheckReservedLock(sqlite3_file *id, int *pResOut);
SQLITE_PRIVATE int sqlite3OsFileControl(sqlite3_file*,int,void*);
+SQLITE_PRIVATE void sqlite3OsFileControlHint(sqlite3_file*,int,void*);
#define SQLITE_FCNTL_DB_UNCHANGED 0xca093fa0
SQLITE_PRIVATE int sqlite3OsSectorSize(sqlite3_file *id);
SQLITE_PRIVATE int sqlite3OsDeviceCharacteristics(sqlite3_file *id);
@@ -8685,6 +9410,7 @@
SQLITE_PRIVATE void sqlite3OsShmBarrier(sqlite3_file *id);
SQLITE_PRIVATE int sqlite3OsShmUnmap(sqlite3_file *id, int);
+
/*
** Functions for accessing sqlite3_vfs methods
*/
@@ -8777,14 +9503,17 @@
*/
#define sqlite3_mutex_alloc(X) ((sqlite3_mutex*)8)
#define sqlite3_mutex_free(X)
-#define sqlite3_mutex_enter(X)
+#define sqlite3_mutex_enter(X)
#define sqlite3_mutex_try(X) SQLITE_OK
-#define sqlite3_mutex_leave(X)
+#define sqlite3_mutex_leave(X)
#define sqlite3_mutex_held(X) ((void)(X),1)
#define sqlite3_mutex_notheld(X) ((void)(X),1)
#define sqlite3MutexAlloc(X) ((sqlite3_mutex*)8)
#define sqlite3MutexInit() SQLITE_OK
#define sqlite3MutexEnd()
+#define MUTEX_LOGIC(X)
+#else
+#define MUTEX_LOGIC(X) X
#endif /* defined(SQLITE_MUTEX_OMIT) */
/************** End of mutex.h ***********************************************/
@@ -8808,9 +9537,24 @@
/*
** An instance of the following structure stores a database schema.
+**
+** Most Schema objects are associated with a Btree. The exception is
+** the Schema for the TEMP databaes (sqlite3.aDb[1]) which is free-standing.
+** In shared cache mode, a single Schema object can be shared by multiple
+** Btrees that refer to the same underlying BtShared object.
+**
+** Schema objects are automatically deallocated when the last Btree that
+** references them is destroyed. The TEMP Schema is manually freed by
+** sqlite3_close().
+*
+** A thread must be holding a mutex on the corresponding Btree in order
+** to access Schema content. This implies that the thread must also be
+** holding a mutex on the sqlite3 connection pointer that owns the Btree.
+** For a TEMP Schema, only the connection mutex is required.
*/
struct Schema {
int schema_cookie; /* Database schema version number for this file */
+ int iGeneration; /* Generation counter. Incremented with each change */
Hash tblHash; /* All tables indexed by name */
Hash idxHash; /* All (named) indices indexed by name */
Hash trigHash; /* All triggers indexed by name */
@@ -8877,6 +9621,7 @@
u8 bMalloced; /* True if pStart obtained from sqlite3_malloc() */
int nOut; /* Number of buffers currently checked out */
int mxOut; /* Highwater mark for nOut */
+ int anStat[3]; /* 0: hits. 1: size misses. 2: full misses */
LookasideSlot *pFree; /* List of available buffers */
void *pStart; /* First byte of available memory space */
void *pEnd; /* First byte past end of available space */
@@ -8926,7 +9671,7 @@
int nDb; /* Number of backends currently in use */
Db *aDb; /* All backends */
int flags; /* Miscellaneous flags. See below */
- int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */
+ unsigned int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */
int errCode; /* Most recent error code (SQLITE_*) */
int errMask; /* & result codes with this before returning */
u8 autoCommit; /* The auto-commit flag. */
@@ -8935,6 +9680,7 @@
u8 dfltLockMode; /* Default locking-mode for attached dbs */
signed char nextAutovac; /* Autovac setting after VACUUM if >=0 */
u8 suppressErr; /* Do not issue error messages if true */
+ u8 vtabOnConflict; /* Value to return for s3_vtab_on_conflict() */
int nextPagesize; /* Pagesize after VACUUM if >0 */
int nTable; /* Number of tables in the database */
CollSeq *pDfltColl; /* The default collating sequence (BINARY) */
@@ -8955,6 +9701,7 @@
struct Vdbe *pVdbe; /* List of active virtual machines */
int activeVdbeCnt; /* Number of VDBEs currently executing */
int writeVdbeCnt; /* Number of active VDBEs that are writing */
+ int vdbeExecCnt; /* Number of nested calls to VdbeExec() */
void (*xTrace)(void*,const char*); /* Trace function */
void *pTraceArg; /* Argument to the trace function */
void (*xProfile)(void*,const char*,u64); /* Profiling function */
@@ -8992,7 +9739,7 @@
#endif
#ifndef SQLITE_OMIT_VIRTUALTABLE
Hash aModule; /* populated by sqlite3_create_module() */
- Table *pVTab; /* vtab with active Connect/Create method */
+ VtabCtx *pVtabCtx; /* Context for active vtab connect/create */
VTable **aVTrans; /* Virtual tables with open transactions */
int nVTrans; /* Allocated size of aVTrans */
VTable *pDisconnect; /* Disconnect these in next sqlite3_prepare() */
@@ -9062,6 +9809,7 @@
#define SQLITE_AutoIndex 0x08000000 /* Enable automatic indexes */
#define SQLITE_PreferBuiltin 0x10000000 /* Preference to built-in funcs */
#define SQLITE_LoadExtension 0x20000000 /* Enable load_extension */
+#define SQLITE_EnableTrigger 0x40000000 /* True to enable triggers */
/*
** Bits of the sqlite3.flags field that are used by the
@@ -9075,6 +9823,8 @@
#define SQLITE_IndexCover 0x10 /* Disable index covering table */
#define SQLITE_GroupByOrder 0x20 /* Disable GROUPBY cover of ORDERBY */
#define SQLITE_FactorOutConst 0x40 /* Disable factoring out constants */
+#define SQLITE_IdxRealAsInt 0x80 /* Store REAL as INT in indices */
+#define SQLITE_DistinctOpt 0x80 /* DISTINCT using indexes */
#define SQLITE_OptMask 0xff /* Mask of all disablable opts */
/*
@@ -9251,21 +10001,12 @@
struct CollSeq {
char *zName; /* Name of the collating sequence, UTF-8 encoded */
u8 enc; /* Text encoding handled by xCmp() */
- u8 type; /* One of the SQLITE_COLL_... values below */
void *pUser; /* First argument to xCmp() */
int (*xCmp)(void*,int, const void*, int, const void*);
void (*xDel)(void*); /* Destructor for pUser */
};
/*
-** Allowed values of CollSeq.type:
-*/
-#define SQLITE_COLL_BINARY 1 /* The default memcmp() collating sequence */
-#define SQLITE_COLL_NOCASE 2 /* The built-in NOCASE collating sequence */
-#define SQLITE_COLL_REVERSE 3 /* The built-in REVERSE collating sequence */
-#define SQLITE_COLL_USER 0 /* Any other user-defined collating sequence */
-
-/*
** A sort order can be either ASC or DESC.
*/
#define SQLITE_SO_ASC 0 /* Sort in ascending order */
@@ -9320,7 +10061,7 @@
** schema is shared, as the implementation often stores the database
** connection handle passed to it via the xConnect() or xCreate() method
** during initialization internally. This database connection handle may
-** then used by the virtual table implementation to access real tables
+** then be used by the virtual table implementation to access real tables
** within the database. So that they appear as part of the callers
** transaction, these accesses need to be made via the same database
** connection as that used to execute SQL operations on the virtual table.
@@ -9354,6 +10095,8 @@
Module *pMod; /* Pointer to module implementation */
sqlite3_vtab *pVtab; /* Pointer to vtab instance */
int nRef; /* Number of pointers to this structure */
+ u8 bConstraint; /* True if constraints are supported */
+ int iSavepoint; /* Depth of the SAVEPOINT stack */
VTable *pNext; /* Next in linked list (see above) */
};
@@ -9394,7 +10137,7 @@
Column *aCol; /* Information about each column */
Index *pIndex; /* List of SQL indexes on this table. */
int tnum; /* Root BTree node for this table (see note above) */
- unsigned nRowEst; /* Estimated rows in table - from sqlite_stat1 table */
+ tRowcnt nRowEst; /* Estimated rows in table - from sqlite_stat1 table */
Select *pSelect; /* NULL for tables. Points to definition if a view. */
u16 nRef; /* Number of pointers to this Table */
u8 tabFlags; /* Mask of TF_* values */
@@ -9548,7 +10291,7 @@
struct UnpackedRecord {
KeyInfo *pKeyInfo; /* Collation and sort-order information */
u16 nField; /* Number of entries in apMem[] */
- u16 flags; /* Boolean settings. UNPACKED_... below */
+ u8 flags; /* Boolean settings. UNPACKED_... below */
i64 rowid; /* Used by UNPACKED_PREFIX_SEARCH */
Mem *aMem; /* Values */
};
@@ -9556,12 +10299,9 @@
/*
** Allowed values of UnpackedRecord.flags
*/
-#define UNPACKED_NEED_FREE 0x0001 /* Memory is from sqlite3Malloc() */
-#define UNPACKED_NEED_DESTROY 0x0002 /* apMem[]s should all be destroyed */
-#define UNPACKED_IGNORE_ROWID 0x0004 /* Ignore trailing rowid on key1 */
-#define UNPACKED_INCRKEY 0x0008 /* Make this key an epsilon larger */
-#define UNPACKED_PREFIX_MATCH 0x0010 /* A prefix match is considered OK */
-#define UNPACKED_PREFIX_SEARCH 0x0020 /* A prefix match is considered OK */
+#define UNPACKED_INCRKEY 0x01 /* Make this key an epsilon larger */
+#define UNPACKED_PREFIX_MATCH 0x02 /* A prefix match is considered OK */
+#define UNPACKED_PREFIX_SEARCH 0x04 /* Ignore final (rowid) field */
/*
** Each SQL index is represented in memory by an
@@ -9593,30 +10333,40 @@
char *zName; /* Name of this index */
int nColumn; /* Number of columns in the table used by this index */
int *aiColumn; /* Which columns are used by this index. 1st is 0 */
- unsigned *aiRowEst; /* Result of ANALYZE: Est. rows selected by each column */
+ tRowcnt *aiRowEst; /* Result of ANALYZE: Est. rows selected by each column */
Table *pTable; /* The SQL table being indexed */
int tnum; /* Page containing root of this index in database file */
u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */
u8 autoIndex; /* True if is automatically created (ex: by UNIQUE) */
+ u8 bUnordered; /* Use this index for == or IN queries only */
char *zColAff; /* String defining the affinity of each column */
Index *pNext; /* The next index associated with the same table */
Schema *pSchema; /* Schema containing this index */
u8 *aSortOrder; /* Array of size Index.nColumn. True==DESC, False==ASC */
char **azColl; /* Array of collation sequence names for index */
- IndexSample *aSample; /* Array of SQLITE_INDEX_SAMPLES samples */
+#ifdef SQLITE_ENABLE_STAT3
+ int nSample; /* Number of elements in aSample[] */
+ tRowcnt avgEq; /* Average nEq value for key values not in aSample */
+ IndexSample *aSample; /* Samples of the left-most key */
+#endif
};
/*
-** Each sample stored in the sqlite_stat2 table is represented in memory
-** using a structure of this type.
+** Each sample stored in the sqlite_stat3 table is represented in memory
+** using a structure of this type. See documentation at the top of the
+** analyze.c source file for additional information.
*/
struct IndexSample {
union {
char *z; /* Value if eType is SQLITE_TEXT or SQLITE_BLOB */
- double r; /* Value if eType is SQLITE_FLOAT or SQLITE_INTEGER */
+ double r; /* Value if eType is SQLITE_FLOAT */
+ i64 i; /* Value if eType is SQLITE_INTEGER */
} u;
u8 eType; /* SQLITE_NULL, SQLITE_INTEGER ... etc. */
- u8 nByte; /* Size in byte of text or blob. */
+ int nByte; /* Size in byte of text or blob. */
+ tRowcnt nEq; /* Est. number of rows where the key equals this sample */
+ tRowcnt nLt; /* Est. number of rows where key is less than this sample */
+ tRowcnt nDLt; /* Est. number of distinct keys less than this sample */
};
/*
@@ -9651,6 +10401,7 @@
u8 useSortingIdx; /* In direct mode, reference the sorting index rather
** than the source table */
int sortingIdx; /* Cursor number of the sorting index */
+ int sortingIdxPTab; /* Cursor number of pseudo-table */
ExprList *pGroupBy; /* The group by clause */
int nSortingColumn; /* Number of columns in the sorting index */
struct AggInfo_col { /* For each column used in source tables */
@@ -9761,7 +10512,7 @@
u16 flags; /* Various flags. EP_* See below */
union {
char *zToken; /* Token value. Zero terminated and dequoted */
- int iValue; /* Integer value if EP_IntValue */
+ int iValue; /* Non-negative integer value if EP_IntValue */
} u;
/* If the EP_TokenOnly flag is set in the Expr.flags mask, then no
@@ -9813,10 +10564,10 @@
#define EP_FixedDest 0x0200 /* Result needed in a specific register */
#define EP_IntValue 0x0400 /* Integer value contained in u.iValue */
#define EP_xIsSelect 0x0800 /* x.pSelect is valid (otherwise x.pList is) */
-
-#define EP_Reduced 0x1000 /* Expr struct is EXPR_REDUCEDSIZE bytes only */
-#define EP_TokenOnly 0x2000 /* Expr struct is EXPR_TOKENONLYSIZE bytes only */
-#define EP_Static 0x4000 /* Held in memory not obtained from malloc() */
+#define EP_Hint 0x1000 /* Optimizer hint. Not required for correctness */
+#define EP_Reduced 0x2000 /* Expr struct is EXPR_REDUCEDSIZE bytes only */
+#define EP_TokenOnly 0x4000 /* Expr struct is EXPR_TOKENONLYSIZE bytes only */
+#define EP_Static 0x8000 /* Held in memory not obtained from malloc() */
/*
** The following are the meanings of bits in the Expr.flags2 field.
@@ -9878,7 +10629,7 @@
char *zSpan; /* Original text of the expression */
u8 sortOrder; /* 1 for DESC or 0 for ASC */
u8 done; /* A flag to indicate when processing is finished */
- u16 iCol; /* For ORDER BY, column number in result set */
+ u16 iOrderByCol; /* For ORDER BY, column number in result set */
u16 iAlias; /* Index into Parse.aAlias[] for zName */
} *a; /* One entry for each expression */
};
@@ -9960,9 +10711,11 @@
char *zAlias; /* The "B" part of a "A AS B" phrase. zName is the "A" */
Table *pTab; /* An SQL table corresponding to zName */
Select *pSelect; /* A SELECT statement used in place of a table name */
- u8 isPopulated; /* Temporary table associated with SELECT is populated */
+ int addrFillSub; /* Address of subroutine to manifest a subquery */
+ int regReturn; /* Register holding return address of addrFillSub */
u8 jointype; /* Type of join between this able and the previous */
u8 notIndexed; /* True if there is a NOT INDEXED clause */
+ u8 isCorrelated; /* True if sub-query is correlated */
#ifndef SQLITE_OMIT_EXPLAIN
u8 iSelectId; /* If pSelect!=0, the id of the sub-select in EQP */
#endif
@@ -10065,10 +10818,10 @@
#define WHERE_ORDERBY_MAX 0x0002 /* ORDER BY processing for max() func */
#define WHERE_ONEPASS_DESIRED 0x0004 /* Want to do one-pass UPDATE/DELETE */
#define WHERE_DUPLICATES_OK 0x0008 /* Ok to return a row more than once */
-#define WHERE_OMIT_OPEN 0x0010 /* Table cursors are already open */
-#define WHERE_OMIT_CLOSE 0x0020 /* Omit close of table & index cursors */
-#define WHERE_FORCE_TABLE 0x0040 /* Do not use an index-only search */
-#define WHERE_ONETABLE_ONLY 0x0080 /* Only code the 1st table in pTabList */
+#define WHERE_OMIT_OPEN_CLOSE 0x0010 /* Table cursors are already open */
+#define WHERE_FORCE_TABLE 0x0020 /* Do not use an index-only search */
+#define WHERE_ONETABLE_ONLY 0x0040 /* Only code the 1st table in pTabList */
+#define WHERE_AND_ONLY 0x0080 /* Don't use indices for OR terms */
/*
** The WHERE clause processing routine has two halves. The
@@ -10082,6 +10835,7 @@
u16 wctrlFlags; /* Flags originally passed to sqlite3WhereBegin() */
u8 okOnePass; /* Ok to use one-pass algorithm for UPDATE or DELETE */
u8 untestedTerms; /* Not all WHERE terms resolved by outer loop */
+ u8 eDistinct;
SrcList *pTabList; /* List of tables in the join */
int iTop; /* The very beginning of the WHERE loop */
int iContinue; /* Jump here to continue with next record */
@@ -10093,6 +10847,9 @@
WhereLevel a[1]; /* Information about each nest loop in WHERE */
};
+#define WHERE_DISTINCT_UNIQUE 1
+#define WHERE_DISTINCT_ORDERED 2
+
/*
** A NameContext defines a context in which to resolve table and column
** names. The context consists of a list of tables (the pSrcList) field and
@@ -10172,12 +10929,13 @@
** Allowed values for Select.selFlags. The "SF" prefix stands for
** "Select Flag".
*/
-#define SF_Distinct 0x0001 /* Output should be DISTINCT */
-#define SF_Resolved 0x0002 /* Identifiers have been resolved */
-#define SF_Aggregate 0x0004 /* Contains aggregate functions */
-#define SF_UsesEphemeral 0x0008 /* Uses the OpenEphemeral opcode */
-#define SF_Expanded 0x0010 /* sqlite3SelectExpand() called on this */
-#define SF_HasTypeInfo 0x0020 /* FROM subqueries have Table metadata */
+#define SF_Distinct 0x01 /* Output should be DISTINCT */
+#define SF_Resolved 0x02 /* Identifiers have been resolved */
+#define SF_Aggregate 0x04 /* Contains aggregate functions */
+#define SF_UsesEphemeral 0x08 /* Uses the OpenEphemeral opcode */
+#define SF_Expanded 0x10 /* sqlite3SelectExpand() called on this */
+#define SF_HasTypeInfo 0x20 /* FROM subqueries have Table metadata */
+#define SF_UseSorter 0x40 /* Sort using a sorter */
/*
@@ -10262,6 +11020,15 @@
};
/*
+** The yDbMask datatype for the bitmask of all attached databases.
+*/
+#if SQLITE_MAX_ATTACHED>30
+ typedef sqlite3_uint64 yDbMask;
+#else
+ typedef unsigned int yDbMask;
+#endif
+
+/*
** An SQL parser context. A copy of this structure is passed through
** the parser and down into all the parser action routine in order to
** carry around information that is global to the entire parse.
@@ -10283,10 +11050,8 @@
char *zErrMsg; /* An error message */
Vdbe *pVdbe; /* An engine for executing database bytecode */
u8 colNamesSet; /* TRUE after OP_ColumnName has been issued to pVdbe */
- u8 nameClash; /* A permanent table name clashes with temp table name */
u8 checkSchema; /* Causes schema cookie check after an error */
u8 nested; /* Number of nested calls to the parser/code generator */
- u8 parseError; /* True after a parsing error. Ticket #1794 */
u8 nTempReg; /* Number of temporary registers in aTempReg[] */
u8 nTempInUse; /* Number of aTempReg[] currently checked out */
int aTempReg[8]; /* Holding area for temporary registers */
@@ -10296,11 +11061,12 @@
int nTab; /* Number of previously allocated VDBE cursors */
int nMem; /* Number of memory cells used so far */
int nSet; /* Number of sets used so far */
+ int nOnce; /* Number of OP_Once instructions so far */
int ckBase; /* Base register of data during check constraints */
int iCacheLevel; /* ColCache valid when aColCache[].iLevel<=iCacheLevel */
int iCacheCnt; /* Counter used to generate aColCache[].lru values */
- u8 nColCache; /* Number of entries in the column cache */
- u8 iColCache; /* Next entry of the cache to replace */
+ u8 nColCache; /* Number of entries in aColCache[] */
+ u8 iColCache; /* Next entry in aColCache[] to replace */
struct yColCache {
int iTable; /* Table cursor number */
int iColumn; /* Table column number */
@@ -10309,8 +11075,8 @@
int iReg; /* Reg with value of this column. 0 means none. */
int lru; /* Least recently used entry has the smallest value */
} aColCache[SQLITE_N_COLCACHE]; /* One for each column cache entry */
- u32 writeMask; /* Start a write transaction on these databases */
- u32 cookieMask; /* Bitmask of schema verified databases */
+ yDbMask writeMask; /* Start a write transaction on these databases */
+ yDbMask cookieMask; /* Bitmask of schema verified databases */
u8 isMultiWrite; /* True if statement may affect/insert multiple rows */
u8 mayAbort; /* True if statement may throw an ABORT exception */
int cookieGoto; /* Address of OP_Goto to cookie verifier subroutine */
@@ -10338,12 +11104,10 @@
** each recursion */
int nVar; /* Number of '?' variables seen in the SQL so far */
- int nVarExpr; /* Number of used slots in apVarExpr[] */
- int nVarExprAlloc; /* Number of allocated slots in apVarExpr[] */
- Expr **apVarExpr; /* Pointers to :aaa and $aaaa wildcard expressions */
+ int nzVar; /* Number of available slots in azVar[] */
+ char **azVar; /* Pointers to names of parameters */
Vdbe *pReprepare; /* VM being reprepared (sqlite3Reprepare()) */
int nAlias; /* Number of aliased result set columns */
- int nAliasAlloc; /* Number of allocated slots for aAlias[] */
int *aAlias; /* Register used to hold aliased result */
u8 explain; /* True if the EXPLAIN flag is found on the query */
Token sNameToken; /* Token with unqualified schema object name */
@@ -10532,12 +11296,13 @@
int bMemstat; /* True to enable memory status */
int bCoreMutex; /* True to enable core mutexing */
int bFullMutex; /* True to enable full mutexing */
+ int bOpenUri; /* True to interpret filenames as URIs */
int mxStrlen; /* Maximum string length */
int szLookaside; /* Default lookaside buffer size */
int nLookaside; /* Default lookaside buffer count */
sqlite3_mem_methods m; /* Low-level memory allocation interface */
sqlite3_mutex_methods mutex; /* Low-level mutex interface */
- sqlite3_pcache_methods pcache; /* Low-level page-cache interface */
+ sqlite3_pcache_methods2 pcache2; /* Low-level page-cache interface */
void *pHeap; /* Heap storage space */
int nHeap; /* Size of pHeap[] */
int mnReq, mxReq; /* Min and max heap requests sizes */
@@ -10560,6 +11325,7 @@
int nRefInitMutex; /* Number of users of pInitMutex */
void (*xLog)(void*,int,const char*); /* Function for logging */
void *pLogArg; /* First argument to xLog() */
+ int bLocaltimeFault; /* True to fail localtime() calls */
};
/*
@@ -10742,6 +11508,29 @@
#if defined(SQLITE_TEST)
SQLITE_PRIVATE void *sqlite3TestTextToPtr(const char*);
#endif
+
+/* Output formatting for SQLITE_TESTCTRL_EXPLAIN */
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
+SQLITE_PRIVATE void sqlite3ExplainBegin(Vdbe*);
+SQLITE_PRIVATE void sqlite3ExplainPrintf(Vdbe*, const char*, ...);
+SQLITE_PRIVATE void sqlite3ExplainNL(Vdbe*);
+SQLITE_PRIVATE void sqlite3ExplainPush(Vdbe*);
+SQLITE_PRIVATE void sqlite3ExplainPop(Vdbe*);
+SQLITE_PRIVATE void sqlite3ExplainFinish(Vdbe*);
+SQLITE_PRIVATE void sqlite3ExplainSelect(Vdbe*, Select*);
+SQLITE_PRIVATE void sqlite3ExplainExpr(Vdbe*, Expr*);
+SQLITE_PRIVATE void sqlite3ExplainExprList(Vdbe*, ExprList*);
+SQLITE_PRIVATE const char *sqlite3VdbeExplanation(Vdbe*);
+#else
+# define sqlite3ExplainBegin(X)
+# define sqlite3ExplainSelect(A,B)
+# define sqlite3ExplainExpr(A,B)
+# define sqlite3ExplainExprList(A,B)
+# define sqlite3ExplainFinish(X)
+# define sqlite3VdbeExplanation(X) 0
+#endif
+
+
SQLITE_PRIVATE void sqlite3SetString(char **, sqlite3*, const char*, ...);
SQLITE_PRIVATE void sqlite3ErrorMsg(Parse*, const char*, ...);
SQLITE_PRIVATE int sqlite3Dequote(char*);
@@ -10752,6 +11541,7 @@
SQLITE_PRIVATE void sqlite3ReleaseTempReg(Parse*,int);
SQLITE_PRIVATE int sqlite3GetTempRange(Parse*,int);
SQLITE_PRIVATE void sqlite3ReleaseTempRange(Parse*,int,int);
+SQLITE_PRIVATE void sqlite3ClearTempRegCache(Parse*);
SQLITE_PRIVATE Expr *sqlite3ExprAlloc(sqlite3*,int,const Token*,int);
SQLITE_PRIVATE Expr *sqlite3Expr(sqlite3*,int,const char*);
SQLITE_PRIVATE void sqlite3ExprAttachSubtrees(sqlite3*,Expr*,Expr*,Expr*);
@@ -10781,6 +11571,9 @@
SQLITE_PRIVATE void sqlite3AddDefaultValue(Parse*,ExprSpan*);
SQLITE_PRIVATE void sqlite3AddCollateType(Parse*, Token*);
SQLITE_PRIVATE void sqlite3EndTable(Parse*,Token*,Token*,Select*);
+SQLITE_PRIVATE int sqlite3ParseUri(const char*,const char*,unsigned int*,
+ sqlite3_vfs**,char**,char **);
+SQLITE_PRIVATE int sqlite3CodeOnce(Parse *);
SQLITE_PRIVATE Bitvec *sqlite3BitvecCreate(u32);
SQLITE_PRIVATE int sqlite3BitvecTest(Bitvec*, u32);
@@ -10805,6 +11598,7 @@
#endif
SQLITE_PRIVATE void sqlite3DropTable(Parse*, SrcList*, int, int);
+SQLITE_PRIVATE void sqlite3CodeDropTable(Parse*, Table*, int, int);
SQLITE_PRIVATE void sqlite3DeleteTable(sqlite3*, Table*);
#ifndef SQLITE_OMIT_AUTOINCREMENT
SQLITE_PRIVATE void sqlite3AutoincrementBegin(Parse *pParse);
@@ -10842,7 +11636,7 @@
#endif
SQLITE_PRIVATE void sqlite3DeleteFrom(Parse*, SrcList*, Expr*);
SQLITE_PRIVATE void sqlite3Update(Parse*, SrcList*, ExprList*, Expr*, int);
-SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(Parse*, SrcList*, Expr*, ExprList**, u16);
+SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(Parse*, SrcList*, Expr*, ExprList**,ExprList*,u16);
SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo*);
SQLITE_PRIVATE int sqlite3ExprCodeGetColumn(Parse*, Table*, int, int, int);
SQLITE_PRIVATE void sqlite3ExprCodeGetColumnOfTable(Vdbe*, Table*, int, int, int);
@@ -10880,6 +11674,7 @@
SQLITE_PRIVATE void sqlite3PrngResetState(void);
SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3*);
SQLITE_PRIVATE void sqlite3CodeVerifySchema(Parse*, int);
+SQLITE_PRIVATE void sqlite3CodeVerifyNamedSchema(Parse*, const char *zDb);
SQLITE_PRIVATE void sqlite3BeginTransaction(Parse*, int);
SQLITE_PRIVATE void sqlite3CommitTransaction(Parse*);
SQLITE_PRIVATE void sqlite3RollbackTransaction(Parse*);
@@ -10984,7 +11779,7 @@
SQLITE_PRIVATE int sqlite3Atoi(const char*);
SQLITE_PRIVATE int sqlite3Utf16ByteLen(const void *pData, int nChar);
SQLITE_PRIVATE int sqlite3Utf8CharLen(const char *pData, int nByte);
-SQLITE_PRIVATE int sqlite3Utf8Read(const u8*, const u8**);
+SQLITE_PRIVATE u32 sqlite3Utf8Read(const u8*, const u8**);
/*
** Routines to read and write variable-length integers. These used to
@@ -11030,6 +11825,7 @@
SQLITE_PRIVATE int sqlite3Atoi64(const char*, i64*, int, u8);
SQLITE_PRIVATE void sqlite3Error(sqlite3*, int, const char*,...);
SQLITE_PRIVATE void *sqlite3HexToBlob(sqlite3*, const char *z, int n);
+SQLITE_PRIVATE u8 sqlite3HexToInt(int h);
SQLITE_PRIVATE int sqlite3TwoPartName(Parse *, Token *, Token *, Token **);
SQLITE_PRIVATE const char *sqlite3ErrStr(int);
SQLITE_PRIVATE int sqlite3ReadSchema(Parse *pParse);
@@ -11041,6 +11837,16 @@
SQLITE_PRIVATE int sqlite3CheckCollSeq(Parse *, CollSeq *);
SQLITE_PRIVATE int sqlite3CheckObjectName(Parse *, const char *);
SQLITE_PRIVATE void sqlite3VdbeSetChanges(sqlite3 *, int);
+SQLITE_PRIVATE int sqlite3AddInt64(i64*,i64);
+SQLITE_PRIVATE int sqlite3SubInt64(i64*,i64);
+SQLITE_PRIVATE int sqlite3MulInt64(i64*,i64);
+SQLITE_PRIVATE int sqlite3AbsInt32(int);
+#ifdef SQLITE_ENABLE_8_3_NAMES
+SQLITE_PRIVATE void sqlite3FileSuffix3(const char*, char*);
+#else
+# define sqlite3FileSuffix3(X,Y)
+#endif
+SQLITE_PRIVATE u8 sqlite3GetBoolean(const char *z);
SQLITE_PRIVATE const void *sqlite3ValueText(sqlite3_value*, u8);
SQLITE_PRIVATE int sqlite3ValueBytes(sqlite3_value*, u8);
@@ -11049,7 +11855,7 @@
SQLITE_PRIVATE void sqlite3ValueFree(sqlite3_value*);
SQLITE_PRIVATE sqlite3_value *sqlite3ValueNew(sqlite3 *);
SQLITE_PRIVATE char *sqlite3Utf16to8(sqlite3 *, const void*, int, u8);
-#ifdef SQLITE_ENABLE_STAT2
+#ifdef SQLITE_ENABLE_STAT3
SQLITE_PRIVATE char *sqlite3Utf8to16(sqlite3 *, u8, char *, int, int *);
#endif
SQLITE_PRIVATE int sqlite3ValueFromExpr(sqlite3 *, Expr *, u8, u8, sqlite3_value **);
@@ -11065,7 +11871,7 @@
SQLITE_PRIVATE int sqlite3PendingByte;
#endif
#endif
-SQLITE_PRIVATE void sqlite3RootPageMoved(Db*, int, int);
+SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3*, int, int, int);
SQLITE_PRIVATE void sqlite3Reindex(Parse*, Token*, Token*);
SQLITE_PRIVATE void sqlite3AlterFunctions(void);
SQLITE_PRIVATE void sqlite3AlterRenameTable(Parse*, SrcList*, Token*);
@@ -11092,7 +11898,7 @@
SQLITE_PRIVATE void sqlite3RegisterLikeFunctions(sqlite3*, int);
SQLITE_PRIVATE int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);
SQLITE_PRIVATE void sqlite3MinimumFileFormat(Parse*, int, int);
-SQLITE_PRIVATE void sqlite3SchemaFree(void *);
+SQLITE_PRIVATE void sqlite3SchemaClear(void *);
SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *);
SQLITE_PRIVATE KeyInfo *sqlite3IndexKeyinfo(Parse *, Index *);
@@ -11106,6 +11912,7 @@
SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum*, char*, int, int);
SQLITE_PRIVATE void sqlite3StrAccumAppend(StrAccum*,const char*,int);
+SQLITE_PRIVATE void sqlite3AppendSpace(StrAccum*,int);
SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum*);
SQLITE_PRIVATE void sqlite3StrAccumReset(StrAccum*);
SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest*,int,int);
@@ -11150,6 +11957,8 @@
# define sqlite3VtabLock(X)
# define sqlite3VtabUnlock(X)
# define sqlite3VtabUnlockList(X)
+# define sqlite3VtabSavepoint(X, Y, Z) SQLITE_OK
+# define sqlite3GetVTable(X,Y) ((VTable*)0)
#else
SQLITE_PRIVATE void sqlite3VtabClear(sqlite3 *db, Table*);
SQLITE_PRIVATE int sqlite3VtabSync(sqlite3 *db, char **);
@@ -11158,6 +11967,8 @@
SQLITE_PRIVATE void sqlite3VtabLock(VTable *);
SQLITE_PRIVATE void sqlite3VtabUnlock(VTable *);
SQLITE_PRIVATE void sqlite3VtabUnlockList(sqlite3*);
+SQLITE_PRIVATE int sqlite3VtabSavepoint(sqlite3 *, int, int);
+SQLITE_PRIVATE VTable *sqlite3GetVTable(sqlite3*, Table*);
# define sqlite3VtabInSync(db) ((db)->nVTrans>0 && (db)->aVTrans==0)
#endif
SQLITE_PRIVATE void sqlite3VtabMakeWritable(Parse*,Table*);
@@ -11177,9 +11988,8 @@
SQLITE_PRIVATE void sqlite3ExprListCheckLength(Parse*, ExprList*, const char*);
SQLITE_PRIVATE CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *);
SQLITE_PRIVATE int sqlite3TempInMemory(const sqlite3*);
-SQLITE_PRIVATE VTable *sqlite3GetVTable(sqlite3*, Table*);
SQLITE_PRIVATE const char *sqlite3JournalModename(int);
-SQLITE_PRIVATE int sqlite3Checkpoint(sqlite3*, int);
+SQLITE_PRIVATE int sqlite3Checkpoint(sqlite3*, int, int, int*, int*);
SQLITE_PRIVATE int sqlite3WalDefaultHook(void*,sqlite3*,const char*,int);
/* Declarations for functions in fkey.c. All of these are replaced by
@@ -11464,7 +12274,9 @@
};
#endif
-
+#ifndef SQLITE_USE_URI
+# define SQLITE_USE_URI 0
+#endif
/*
** The following singleton contains the global configuration for
@@ -11474,12 +12286,13 @@
SQLITE_DEFAULT_MEMSTATUS, /* bMemstat */
1, /* bCoreMutex */
SQLITE_THREADSAFE==1, /* bFullMutex */
+ SQLITE_USE_URI, /* bOpenUri */
0x7ffffffe, /* mxStrlen */
- 100, /* szLookaside */
+ 128, /* szLookaside */
500, /* nLookaside */
{0,0,0,0,0,0,0,0}, /* m */
{0,0,0,0,0,0,0,0,0}, /* mutex */
- {0,0,0,0,0,0,0,0,0,0,0}, /* pcache */
+ {0,0,0,0,0,0,0,0,0,0,0,0,0},/* pcache2 */
(void*)0, /* pHeap */
0, /* nHeap */
0, 0, /* mnHeap, mxHeap */
@@ -11501,6 +12314,7 @@
0, /* nRefInitMutex */
0, /* xLog */
0, /* pLogArg */
+ 0, /* bLocaltimeFault */
};
@@ -11667,8 +12481,8 @@
#ifdef SQLITE_ENABLE_RTREE
"ENABLE_RTREE",
#endif
-#ifdef SQLITE_ENABLE_STAT2
- "ENABLE_STAT2",
+#ifdef SQLITE_ENABLE_STAT3
+ "ENABLE_STAT3",
#endif
#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY
"ENABLE_UNLOCK_NOTIFY",
@@ -11697,6 +12511,9 @@
#ifdef SQLITE_LOCK_TRACE
"LOCK_TRACE",
#endif
+#ifdef SQLITE_MAX_SCHEMA_RETRY
+ "MAX_SCHEMA_RETRY=" CTIMEOPT_VAL(SQLITE_MAX_SCHEMA_RETRY),
+#endif
#ifdef SQLITE_MEMDEBUG
"MEMDEBUG",
#endif
@@ -11727,6 +12544,9 @@
#ifdef SQLITE_OMIT_AUTOMATIC_INDEX
"OMIT_AUTOMATIC_INDEX",
#endif
+#ifdef SQLITE_OMIT_AUTORESET
+ "OMIT_AUTORESET",
+#endif
#ifdef SQLITE_OMIT_AUTOVACUUM
"OMIT_AUTOVACUUM",
#endif
@@ -11807,6 +12627,9 @@
#ifdef SQLITE_OMIT_MEMORYDB
"OMIT_MEMORYDB",
#endif
+#ifdef SQLITE_OMIT_MERGE_SORT
+ "OMIT_MERGE_SORT",
+#endif
#ifdef SQLITE_OMIT_OR_OPTIMIZATION
"OMIT_OR_OPTIMIZATION",
#endif
@@ -11993,6 +12816,12 @@
*/
typedef unsigned char Bool;
+/* Opaque type used by code in vdbesort.c */
+typedef struct VdbeSorter VdbeSorter;
+
+/* Opaque type used by the explainer */
+typedef struct Explain Explain;
+
/*
** A cursor is a pointer into a single BTree within a database file.
** The cursor can seek to a BTree entry with a particular key, or
@@ -12002,16 +12831,14 @@
**
** Every cursor that the virtual machine has open is represented by an
** instance of the following structure.
-**
-** If the VdbeCursor.isTriggerRow flag is set it means that this cursor is
-** really a single row that represents the NEW or OLD pseudo-table of
-** a row trigger. The data for the row is stored in VdbeCursor.pData and
-** the rowid is in VdbeCursor.iKey.
*/
struct VdbeCursor {
BtCursor *pCursor; /* The cursor structure of the backend */
+ Btree *pBt; /* Separate file holding temporary table */
+ KeyInfo *pKeyInfo; /* Info about index keys needed by index cursors */
int iDb; /* Index of cursor database in db->aDb[] (or -1) */
- i64 lastRowid; /* Last rowid from a Next or NextIdx operation */
+ int pseudoTableReg; /* Register holding pseudotable content. */
+ int nField; /* Number of fields in the header */
Bool zeroed; /* True if zeroed out and ready for reuse */
Bool rowidIsValid; /* True if lastRowid is valid */
Bool atFirst; /* True if pointing to first entry */
@@ -12021,14 +12848,13 @@
Bool isTable; /* True if a table requiring integer keys */
Bool isIndex; /* True if an index containing keys only - no data */
Bool isOrdered; /* True if the underlying table is BTREE_UNORDERED */
- i64 movetoTarget; /* Argument to the deferred sqlite3BtreeMoveto() */
- Btree *pBt; /* Separate file holding temporary table */
- int pseudoTableReg; /* Register holding pseudotable content. */
- KeyInfo *pKeyInfo; /* Info about index keys needed by index cursors */
- int nField; /* Number of fields in the header */
- i64 seqCount; /* Sequence counter */
+ Bool isSorter; /* True if a new-style sorter */
sqlite3_vtab_cursor *pVtabCursor; /* The cursor for a virtual table */
const sqlite3_module *pModule; /* Module for cursor pVtabCursor */
+ i64 seqCount; /* Sequence counter */
+ i64 movetoTarget; /* Argument to the deferred sqlite3BtreeMoveto() */
+ i64 lastRowid; /* Last rowid from a Next or NextIdx operation */
+ VdbeSorter *pSorter; /* Sorter object for OP_SorterOpen cursors */
/* Result of last sqlite3BtreeMoveto() done by an OP_NotExists or
** OP_IsUnique opcode on this cursor. */
@@ -12080,6 +12906,8 @@
int nOp; /* Size of aOp array */
Mem *aMem; /* Array of memory cells for parent frame */
int nMem; /* Number of entries in aMem */
+ u8 *aOnceFlag; /* Array of OP_Once flags for parent frame */
+ int nOnceFlag; /* Number of entries in aOnceFlag */
VdbeCursor **apCsr; /* Array of Vdbe cursors for parent frame */
u16 nCursor; /* Number of entries in apCsr */
void *token; /* Copy of SubProgram.token */
@@ -12100,25 +12928,19 @@
/*
** Internally, the vdbe manipulates nearly all SQL values as Mem
** structures. Each Mem struct may cache multiple representations (string,
-** integer etc.) of the same value. A value (and therefore Mem structure)
-** has the following properties:
-**
-** Each value has a manifest type. The manifest type of the value stored
-** in a Mem struct is returned by the MemType(Mem*) macro. The type is
-** one of SQLITE_NULL, SQLITE_INTEGER, SQLITE_REAL, SQLITE_TEXT or
-** SQLITE_BLOB.
+** integer etc.) of the same value.
*/
struct Mem {
+ sqlite3 *db; /* The associated database connection */
+ char *z; /* String or BLOB value */
+ double r; /* Real value */
union {
- i64 i; /* Integer value. */
+ i64 i; /* Integer value used when MEM_Int is set in flags */
int nZero; /* Used when bit MEM_Zero is set in flags */
FuncDef *pDef; /* Used only when flags==MEM_Agg */
RowSet *pRowSet; /* Used only when flags==MEM_RowSet */
VdbeFrame *pFrame; /* Used when flags==MEM_Frame */
} u;
- double r; /* Real value */
- sqlite3 *db; /* The associated database connection */
- char *z; /* String or BLOB value */
int n; /* Number of characters in string value, excluding '\0' */
u16 flags; /* Some combination of MEM_Null, MEM_Str, MEM_Dyn, etc. */
u8 type; /* One of SQLITE_NULL, SQLITE_TEXT, SQLITE_INTEGER, etc */
@@ -12142,9 +12964,6 @@
** database (see below for exceptions). If the MEM_Term flag is also
** set, then the string is nul terminated. The MEM_Int and MEM_Real
** flags may coexist with the MEM_Str flag.
-**
-** Multiple of these values can appear in Mem.flags. But only one
-** at a time can appear in Mem.type.
*/
#define MEM_Null 0x0001 /* Value is NULL */
#define MEM_Str 0x0002 /* Value is a string */
@@ -12228,22 +13047,22 @@
};
/*
-** A Set structure is used for quick testing to see if a value
-** is part of a small set. Sets are used to implement code like
-** this:
-** x.y IN ('hi','hoo','hum')
+** An Explain object accumulates indented output which is helpful
+** in describing recursive data structures.
*/
-typedef struct Set Set;
-struct Set {
- Hash hash; /* A set is just a hash table */
- HashElem *prev; /* Previously accessed hash elemen */
+struct Explain {
+ Vdbe *pVdbe; /* Attach the explanation to this Vdbe */
+ StrAccum str; /* The string being accumulated */
+ int nIndent; /* Number of elements in aIndent */
+ u16 aIndent[100]; /* Levels of indentation */
+ char zBase[100]; /* Initial space */
};
/*
** An instance of the virtual machine. This structure contains the complete
** state of the virtual machine.
**
-** The "sqlite3_stmt" structure pointer that is returned by sqlite3_compile()
+** The "sqlite3_stmt" structure pointer that is returned by sqlite3_prepare()
** is really a pointer to an instance of this structure.
**
** The Vdbe.inVtabMethod variable is set to non-zero for the duration of
@@ -12256,31 +13075,31 @@
*/
struct Vdbe {
sqlite3 *db; /* The database connection that owns this statement */
- Vdbe *pPrev,*pNext; /* Linked list of VDBEs with the same Vdbe.db */
- int nOp; /* Number of instructions in the program */
- int nOpAlloc; /* Number of slots allocated for aOp[] */
Op *aOp; /* Space to hold the virtual machine's program */
- int nLabel; /* Number of labels used */
- int nLabelAlloc; /* Number of slots allocated in aLabel[] */
- int *aLabel; /* Space to hold the labels */
+ Mem *aMem; /* The memory locations */
Mem **apArg; /* Arguments to currently executing user function */
Mem *aColName; /* Column names to return */
Mem *pResultSet; /* Pointer to an array of results */
+ int nMem; /* Number of memory locations currently allocated */
+ int nOp; /* Number of instructions in the program */
+ int nOpAlloc; /* Number of slots allocated for aOp[] */
+ int nLabel; /* Number of labels used */
+ int nLabelAlloc; /* Number of slots allocated in aLabel[] */
+ int *aLabel; /* Space to hold the labels */
u16 nResColumn; /* Number of columns in one row of the result set */
u16 nCursor; /* Number of slots in apCsr[] */
+ u32 magic; /* Magic number for sanity checking */
+ char *zErrMsg; /* Error message written here */
+ Vdbe *pPrev,*pNext; /* Linked list of VDBEs with the same Vdbe.db */
VdbeCursor **apCsr; /* One element of this array for each open cursor */
- u8 errorAction; /* Recovery action to do in case of an error */
- u8 okVar; /* True if azVar[] has been initialized */
- ynVar nVar; /* Number of entries in aVar[] */
Mem *aVar; /* Values for the OP_Variable opcode. */
char **azVar; /* Name of variables */
- u32 magic; /* Magic number for sanity checking */
- int nMem; /* Number of memory locations currently allocated */
- Mem *aMem; /* The memory locations */
+ ynVar nVar; /* Number of entries in aVar[] */
+ ynVar nzVar; /* Number of entries in azVar[] */
u32 cacheCtr; /* VdbeCursor row cache generation counter */
int pc; /* The program counter */
int rc; /* Value to return */
- char *zErrMsg; /* Error message written here */
+ u8 errorAction; /* Recovery action to do in case of an error */
u8 explain; /* True if EXPLAIN present on SQL command */
u8 changeCntOn; /* True to update the change-counter */
u8 expired; /* True if the VM needs to be recompiled */
@@ -12291,23 +13110,31 @@
u8 readOnly; /* True for read-only statements */
u8 isPrepareV2; /* True if prepared with prepare_v2() */
int nChange; /* Number of db changes made since last reset */
- int btreeMask; /* Bitmask of db->aDb[] entries referenced */
- i64 startTime; /* Time when query started - used for profiling */
- BtreeMutexArray aMutex; /* An array of Btree used here and needing locks */
+ yDbMask btreeMask; /* Bitmask of db->aDb[] entries referenced */
+ yDbMask lockMask; /* Subset of btreeMask that requires a lock */
+ int iStatement; /* Statement number (or 0 if has not opened stmt) */
int aCounter[3]; /* Counters used by sqlite3_stmt_status() */
- char *zSql; /* Text of the SQL statement that generated this */
- void *pFree; /* Free this when deleting the vdbe */
+#ifndef SQLITE_OMIT_TRACE
+ i64 startTime; /* Time when query started - used for profiling */
+#endif
i64 nFkConstraint; /* Number of imm. FK constraints this VM */
i64 nStmtDefCons; /* Number of def. constraints when stmt started */
- int iStatement; /* Statement number (or 0 if has not opened stmt) */
+ char *zSql; /* Text of the SQL statement that generated this */
+ void *pFree; /* Free this when deleting the vdbe */
#ifdef SQLITE_DEBUG
FILE *trace; /* Write an execution trace here, if not NULL */
#endif
+#ifdef SQLITE_ENABLE_TREE_EXPLAIN
+ Explain *pExplain; /* The explainer */
+ char *zExplain; /* Explanation of data structures */
+#endif
VdbeFrame *pFrame; /* Parent frame */
VdbeFrame *pDelFrame; /* List of frame objects to free on VM reset */
int nFrame; /* Number of frames in pFrame list */
u32 expmask; /* Binding to these vars invalidates VM */
SubProgram *pProgram; /* Linked list of all sub-programs used by VM */
+ int nOnceFlag; /* Size of array aOnceFlag[] */
+ u8 *aOnceFlag; /* Flags for OP_Once */
};
/*
@@ -12367,6 +13194,9 @@
SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(BtCursor*,int,int,int,Mem*);
SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p);
SQLITE_PRIVATE void sqlite3VdbeMemReleaseExternal(Mem *p);
+#define VdbeMemRelease(X) \
+ if((X)->flags&(MEM_Agg|MEM_Dyn|MEM_RowSet|MEM_Frame)) \
+ sqlite3VdbeMemReleaseExternal(X);
SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem*, FuncDef*);
SQLITE_PRIVATE const char *sqlite3OpcodeName(int);
SQLITE_PRIVATE int sqlite3VdbeMemGrow(Mem *pMem, int n, int preserve);
@@ -12374,9 +13204,36 @@
SQLITE_PRIVATE void sqlite3VdbeFrameDelete(VdbeFrame*);
SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *);
SQLITE_PRIVATE void sqlite3VdbeMemStoreType(Mem *pMem);
+SQLITE_PRIVATE int sqlite3VdbeTransferError(Vdbe *p);
+
+#ifdef SQLITE_OMIT_MERGE_SORT
+# define sqlite3VdbeSorterInit(Y,Z) SQLITE_OK
+# define sqlite3VdbeSorterWrite(X,Y,Z) SQLITE_OK
+# define sqlite3VdbeSorterClose(Y,Z)
+# define sqlite3VdbeSorterRowkey(Y,Z) SQLITE_OK
+# define sqlite3VdbeSorterRewind(X,Y,Z) SQLITE_OK
+# define sqlite3VdbeSorterNext(X,Y,Z) SQLITE_OK
+# define sqlite3VdbeSorterCompare(X,Y,Z) SQLITE_OK
+#else
+SQLITE_PRIVATE int sqlite3VdbeSorterInit(sqlite3 *, VdbeCursor *);
+SQLITE_PRIVATE void sqlite3VdbeSorterClose(sqlite3 *, VdbeCursor *);
+SQLITE_PRIVATE int sqlite3VdbeSorterRowkey(VdbeCursor *, Mem *);
+SQLITE_PRIVATE int sqlite3VdbeSorterNext(sqlite3 *, VdbeCursor *, int *);
+SQLITE_PRIVATE int sqlite3VdbeSorterRewind(sqlite3 *, VdbeCursor *, int *);
+SQLITE_PRIVATE int sqlite3VdbeSorterWrite(sqlite3 *, VdbeCursor *, Mem *);
+SQLITE_PRIVATE int sqlite3VdbeSorterCompare(VdbeCursor *, Mem *, int *);
+#endif
+
+#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0
+SQLITE_PRIVATE void sqlite3VdbeEnter(Vdbe*);
+SQLITE_PRIVATE void sqlite3VdbeLeave(Vdbe*);
+#else
+# define sqlite3VdbeEnter(X)
+# define sqlite3VdbeLeave(X)
+#endif
#ifdef SQLITE_DEBUG
-SQLITE_PRIVATE void sqlite3VdbeMemPrepareToChange(Vdbe*,Mem*);
+SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe*,Mem*);
#endif
#ifndef SQLITE_OMIT_FOREIGN_KEY
@@ -12385,12 +13242,6 @@
# define sqlite3VdbeCheckFk(p,i) 0
#endif
-#ifndef SQLITE_OMIT_SHARED_CACHE
-SQLITE_PRIVATE void sqlite3VdbeMutexArrayEnter(Vdbe *p);
-#else
-# define sqlite3VdbeMutexArrayEnter(p)
-#endif
-
SQLITE_PRIVATE int sqlite3VdbeMemTranslate(Mem*, u8);
#ifdef SQLITE_DEBUG
SQLITE_PRIVATE void sqlite3VdbePrintSql(Vdbe*);
@@ -12400,8 +13251,10 @@
#ifndef SQLITE_OMIT_INCRBLOB
SQLITE_PRIVATE int sqlite3VdbeMemExpandBlob(Mem *);
+ #define ExpandBlob(P) (((P)->flags&MEM_Zero)?sqlite3VdbeMemExpandBlob(P):0)
#else
#define sqlite3VdbeMemExpandBlob(x) SQLITE_OK
+ #define ExpandBlob(P) SQLITE_OK
#endif
#endif /* !defined(_VDBEINT_H_) */
@@ -12509,6 +13362,22 @@
break;
}
+ case SQLITE_DBSTATUS_LOOKASIDE_HIT:
+ case SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE:
+ case SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL: {
+ testcase( op==SQLITE_DBSTATUS_LOOKASIDE_HIT );
+ testcase( op==SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE );
+ testcase( op==SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL );
+ assert( (op-SQLITE_DBSTATUS_LOOKASIDE_HIT)>=0 );
+ assert( (op-SQLITE_DBSTATUS_LOOKASIDE_HIT)<3 );
+ *pCurrent = 0;
+ *pHighwater = db->lookaside.anStat[op - SQLITE_DBSTATUS_LOOKASIDE_HIT];
+ if( resetFlag ){
+ db->lookaside.anStat[op - SQLITE_DBSTATUS_LOOKASIDE_HIT] = 0;
+ }
+ break;
+ }
+
/*
** Return an approximation for the amount of memory currently used
** by all pagers associated with the given database connection. The
@@ -12540,6 +13409,7 @@
int i; /* Used to iterate through schemas */
int nByte = 0; /* Used to accumulate return value */
+ sqlite3BtreeEnterAll(db);
db->pnBytesFreed = &nByte;
for(i=0; i<db->nDb; i++){
Schema *pSchema = db->aDb[i].pSchema;
@@ -12566,6 +13436,7 @@
}
}
db->pnBytesFreed = 0;
+ sqlite3BtreeLeaveAll(db);
*pHighwater = 0;
*pCurrent = nByte;
@@ -12593,6 +13464,28 @@
break;
}
+ /*
+ ** Set *pCurrent to the total cache hits or misses encountered by all
+ ** pagers the database handle is connected to. *pHighwater is always set
+ ** to zero.
+ */
+ case SQLITE_DBSTATUS_CACHE_HIT:
+ case SQLITE_DBSTATUS_CACHE_MISS: {
+ int i;
+ int nRet = 0;
+ assert( SQLITE_DBSTATUS_CACHE_MISS==SQLITE_DBSTATUS_CACHE_HIT+1 );
+
+ for(i=0; i<db->nDb; i++){
+ if( db->aDb[i].pBt ){
+ Pager *pPager = sqlite3BtreePager(db->aDb[i].pBt);
+ sqlite3PagerCacheStat(pPager, op, resetFlag, &nRet);
+ }
+ }
+ *pHighwater = 0;
+ *pCurrent = nRet;
+ break;
+ }
+
default: {
rc = SQLITE_ERROR;
}
@@ -12648,26 +13541,12 @@
** Willmann-Bell, Inc
** Richmond, Virginia (USA)
*/
+/* #include <stdlib.h> */
+/* #include <assert.h> */
#include <time.h>
#ifndef SQLITE_OMIT_DATETIME_FUNCS
-/*
-** On recent Windows platforms, the localtime_s() function is available
-** as part of the "Secure CRT". It is essentially equivalent to
-** localtime_r() available under most POSIX platforms, except that the
-** order of the parameters is reversed.
-**
-** See http://msdn.microsoft.com/en-us/library/a442x3ye(VS.80).aspx.
-**
-** If the user has not indicated to use localtime_r() or localtime_s()
-** already, check for an MSVC build environment that provides
-** localtime_s().
-*/
-#if !defined(HAVE_LOCALTIME_R) && !defined(HAVE_LOCALTIME_S) && \
- defined(_MSC_VER) && defined(_CRT_INSECURE_DEPRECATE)
-#define HAVE_LOCALTIME_S 1
-#endif
/*
** A structure for holding a single date and time.
@@ -12907,12 +13786,18 @@
}
/*
-** Set the time to the current time reported by the VFS
+** Set the time to the current time reported by the VFS.
+**
+** Return the number of errors.
*/
-static void setDateTimeToCurrent(sqlite3_context *context, DateTime *p){
+static int setDateTimeToCurrent(sqlite3_context *context, DateTime *p){
sqlite3 *db = sqlite3_context_db_handle(context);
- sqlite3OsCurrentTimeInt64(db->pVfs, &p->iJD);
- p->validJD = 1;
+ if( sqlite3OsCurrentTimeInt64(db->pVfs, &p->iJD)==SQLITE_OK ){
+ p->validJD = 1;
+ return 0;
+ }else{
+ return 1;
+ }
}
/*
@@ -12942,8 +13827,7 @@
}else if( parseHhMmSs(zDate, p)==0 ){
return 0;
}else if( sqlite3StrICmp(zDate,"now")==0){
- setDateTimeToCurrent(context, p);
- return 0;
+ return setDateTimeToCurrent(context, p);
}else if( sqlite3AtoF(zDate, &r, sqlite3Strlen30(zDate), SQLITE_UTF8) ){
p->iJD = (sqlite3_int64)(r*86400000.0 + 0.5);
p->validJD = 1;
@@ -13013,15 +13897,85 @@
p->validTZ = 0;
}
+/*
+** On recent Windows platforms, the localtime_s() function is available
+** as part of the "Secure CRT". It is essentially equivalent to
+** localtime_r() available under most POSIX platforms, except that the
+** order of the parameters is reversed.
+**
+** See http://msdn.microsoft.com/en-us/library/a442x3ye(VS.80).aspx.
+**
+** If the user has not indicated to use localtime_r() or localtime_s()
+** already, check for an MSVC build environment that provides
+** localtime_s().
+*/
+#if !defined(HAVE_LOCALTIME_R) && !defined(HAVE_LOCALTIME_S) && \
+ defined(_MSC_VER) && defined(_CRT_INSECURE_DEPRECATE)
+#define HAVE_LOCALTIME_S 1
+#endif
+
#ifndef SQLITE_OMIT_LOCALTIME
/*
-** Compute the difference (in milliseconds)
-** between localtime and UTC (a.k.a. GMT)
-** for the time value p where p is in UTC.
+** The following routine implements the rough equivalent of localtime_r()
+** using whatever operating-system specific localtime facility that
+** is available. This routine returns 0 on success and
+** non-zero on any kind of error.
+**
+** If the sqlite3GlobalConfig.bLocaltimeFault variable is true then this
+** routine will always fail.
*/
-static sqlite3_int64 localtimeOffset(DateTime *p){
+static int osLocaltime(time_t *t, struct tm *pTm){
+ int rc;
+#if (!defined(HAVE_LOCALTIME_R) || !HAVE_LOCALTIME_R) \
+ && (!defined(HAVE_LOCALTIME_S) || !HAVE_LOCALTIME_S)
+ struct tm *pX;
+#if SQLITE_THREADSAFE>0
+ sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+#endif
+ sqlite3_mutex_enter(mutex);
+ pX = localtime(t);
+#ifndef SQLITE_OMIT_BUILTIN_TEST
+ if( sqlite3GlobalConfig.bLocaltimeFault ) pX = 0;
+#endif
+ if( pX ) *pTm = *pX;
+ sqlite3_mutex_leave(mutex);
+ rc = pX==0;
+#else
+#ifndef SQLITE_OMIT_BUILTIN_TEST
+ if( sqlite3GlobalConfig.bLocaltimeFault ) return 1;
+#endif
+#if defined(HAVE_LOCALTIME_R) && HAVE_LOCALTIME_R
+ rc = localtime_r(t, pTm)==0;
+#else
+ rc = localtime_s(pTm, t);
+#endif /* HAVE_LOCALTIME_R */
+#endif /* HAVE_LOCALTIME_R || HAVE_LOCALTIME_S */
+ return rc;
+}
+#endif /* SQLITE_OMIT_LOCALTIME */
+
+
+#ifndef SQLITE_OMIT_LOCALTIME
+/*
+** Compute the difference (in milliseconds) between localtime and UTC
+** (a.k.a. GMT) for the time value p where p is in UTC. If no error occurs,
+** return this value and set *pRc to SQLITE_OK.
+**
+** Or, if an error does occur, set *pRc to SQLITE_ERROR. The returned value
+** is undefined in this case.
+*/
+static sqlite3_int64 localtimeOffset(
+ DateTime *p, /* Date at which to calculate offset */
+ sqlite3_context *pCtx, /* Write error here if one occurs */
+ int *pRc /* OUT: Error code. SQLITE_OK or ERROR */
+){
DateTime x, y;
time_t t;
+ struct tm sLocal;
+
+ /* Initialize the contents of sLocal to avoid a compiler warning. */
+ memset(&sLocal, 0, sizeof(sLocal));
+
x = *p;
computeYMD_HMS(&x);
if( x.Y<1971 || x.Y>=2038 ){
@@ -13039,47 +13993,23 @@
x.validJD = 0;
computeJD(&x);
t = (time_t)(x.iJD/1000 - 21086676*(i64)10000);
-#ifdef HAVE_LOCALTIME_R
- {
- struct tm sLocal;
- localtime_r(&t, &sLocal);
- y.Y = sLocal.tm_year + 1900;
- y.M = sLocal.tm_mon + 1;
- y.D = sLocal.tm_mday;
- y.h = sLocal.tm_hour;
- y.m = sLocal.tm_min;
- y.s = sLocal.tm_sec;
+ if( osLocaltime(&t, &sLocal) ){
+ sqlite3_result_error(pCtx, "local time unavailable", -1);
+ *pRc = SQLITE_ERROR;
+ return 0;
}
-#elif defined(HAVE_LOCALTIME_S) && HAVE_LOCALTIME_S
- {
- struct tm sLocal;
- localtime_s(&sLocal, &t);
- y.Y = sLocal.tm_year + 1900;
- y.M = sLocal.tm_mon + 1;
- y.D = sLocal.tm_mday;
- y.h = sLocal.tm_hour;
- y.m = sLocal.tm_min;
- y.s = sLocal.tm_sec;
- }
-#else
- {
- struct tm *pTm;
- sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
- pTm = localtime(&t);
- y.Y = pTm->tm_year + 1900;
- y.M = pTm->tm_mon + 1;
- y.D = pTm->tm_mday;
- y.h = pTm->tm_hour;
- y.m = pTm->tm_min;
- y.s = pTm->tm_sec;
- sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
- }
-#endif
+ y.Y = sLocal.tm_year + 1900;
+ y.M = sLocal.tm_mon + 1;
+ y.D = sLocal.tm_mday;
+ y.h = sLocal.tm_hour;
+ y.m = sLocal.tm_min;
+ y.s = sLocal.tm_sec;
y.validYMD = 1;
y.validHMS = 1;
y.validJD = 0;
y.validTZ = 0;
computeJD(&y);
+ *pRc = SQLITE_OK;
return y.iJD - x.iJD;
}
#endif /* SQLITE_OMIT_LOCALTIME */
@@ -13103,9 +14033,12 @@
** localtime
** utc
**
-** Return 0 on success and 1 if there is any kind of error.
+** Return 0 on success and 1 if there is any kind of error. If the error
+** is in a system call (i.e. localtime()), then an error message is written
+** to context pCtx. If the error is an unrecognized modifier, no error is
+** written to pCtx.
*/
-static int parseModifier(const char *zMod, DateTime *p){
+static int parseModifier(sqlite3_context *pCtx, const char *zMod, DateTime *p){
int rc = 1;
int n;
double r;
@@ -13125,9 +14058,8 @@
*/
if( strcmp(z, "localtime")==0 ){
computeJD(p);
- p->iJD += localtimeOffset(p);
+ p->iJD += localtimeOffset(p, pCtx, &rc);
clearYMD_HMS_TZ(p);
- rc = 0;
}
break;
}
@@ -13148,11 +14080,12 @@
else if( strcmp(z, "utc")==0 ){
sqlite3_int64 c1;
computeJD(p);
- c1 = localtimeOffset(p);
- p->iJD -= c1;
- clearYMD_HMS_TZ(p);
- p->iJD += c1 - localtimeOffset(p);
- rc = 0;
+ c1 = localtimeOffset(p, pCtx, &rc);
+ if( rc==SQLITE_OK ){
+ p->iJD -= c1;
+ clearYMD_HMS_TZ(p);
+ p->iJD += c1 - localtimeOffset(p, pCtx, &rc);
+ }
}
#endif
break;
@@ -13321,8 +14254,9 @@
int eType;
memset(p, 0, sizeof(*p));
if( argc==0 ){
- setDateTimeToCurrent(context, p);
- }else if( (eType = sqlite3_value_type(argv[0]))==SQLITE_FLOAT
+ return setDateTimeToCurrent(context, p);
+ }
+ if( (eType = sqlite3_value_type(argv[0]))==SQLITE_FLOAT
|| eType==SQLITE_INTEGER ){
p->iJD = (sqlite3_int64)(sqlite3_value_double(argv[0])*86400000.0 + 0.5);
p->validJD = 1;
@@ -13333,9 +14267,8 @@
}
}
for(i=1; i<argc; i++){
- if( (z = sqlite3_value_text(argv[i]))==0 || parseModifier((char*)z, p) ){
- return 1;
- }
+ z = sqlite3_value_text(argv[i]);
+ if( z==0 || parseModifier(context, (char*)z, p) ) return 1;
}
return 0;
}
@@ -13635,31 +14568,28 @@
char *zFormat = (char *)sqlite3_user_data(context);
sqlite3 *db;
sqlite3_int64 iT;
+ struct tm *pTm;
+ struct tm sNow;
char zBuf[20];
UNUSED_PARAMETER(argc);
UNUSED_PARAMETER(argv);
db = sqlite3_context_db_handle(context);
- sqlite3OsCurrentTimeInt64(db->pVfs, &iT);
+ if( sqlite3OsCurrentTimeInt64(db->pVfs, &iT) ) return;
t = iT/1000 - 10000*(sqlite3_int64)21086676;
#ifdef HAVE_GMTIME_R
- {
- struct tm sNow;
- gmtime_r(&t, &sNow);
- strftime(zBuf, 20, zFormat, &sNow);
- }
+ pTm = gmtime_r(&t, &sNow);
#else
- {
- struct tm *pTm;
- sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
- pTm = gmtime(&t);
- strftime(zBuf, 20, zFormat, pTm);
- sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
- }
+ sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+ pTm = gmtime(&t);
+ if( pTm ) memcpy(&sNow, pTm, sizeof(sNow));
+ sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
#endif
-
- sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT);
+ if( pTm ){
+ strftime(zBuf, 20, zFormat, &sNow);
+ sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT);
+ }
}
#endif
@@ -13724,11 +14654,18 @@
** The following functions are instrumented for malloc() failure
** testing:
**
-** sqlite3OsOpen()
** sqlite3OsRead()
** sqlite3OsWrite()
** sqlite3OsSync()
+** sqlite3OsFileSize()
** sqlite3OsLock()
+** sqlite3OsCheckReservedLock()
+** sqlite3OsFileControl()
+** sqlite3OsShmMap()
+** sqlite3OsOpen()
+** sqlite3OsDelete()
+** sqlite3OsAccess()
+** sqlite3OsFullPathname()
**
*/
#if defined(SQLITE_TEST)
@@ -13787,9 +14724,23 @@
DO_OS_MALLOC_TEST(id);
return id->pMethods->xCheckReservedLock(id, pResOut);
}
+
+/*
+** Use sqlite3OsFileControl() when we are doing something that might fail
+** and we need to know about the failures. Use sqlite3OsFileControlHint()
+** when simply tossing information over the wall to the VFS and we do not
+** really care if the VFS receives and understands the information since it
+** is only a hint and can be safely ignored. The sqlite3OsFileControlHint()
+** routine has no return value since the return value would be meaningless.
+*/
SQLITE_PRIVATE int sqlite3OsFileControl(sqlite3_file *id, int op, void *pArg){
+ DO_OS_MALLOC_TEST(id);
return id->pMethods->xFileControl(id, op, pArg);
}
+SQLITE_PRIVATE void sqlite3OsFileControlHint(sqlite3_file *id, int op, void *pArg){
+ (void)id->pMethods->xFileControl(id, op, pArg);
+}
+
SQLITE_PRIVATE int sqlite3OsSectorSize(sqlite3_file *id){
int (*xSectorSize)(sqlite3_file*) = id->pMethods->xSectorSize;
return (xSectorSize ? xSectorSize(id) : SQLITE_DEFAULT_SECTOR_SIZE);
@@ -13813,6 +14764,7 @@
int bExtend, /* True to extend file if necessary */
void volatile **pp /* OUT: Pointer to mapping */
){
+ DO_OS_MALLOC_TEST(id);
return id->pMethods->xShmMap(id, iPage, pgsz, bExtend, pp);
}
@@ -13829,15 +14781,17 @@
){
int rc;
DO_OS_MALLOC_TEST(0);
- /* 0x87f3f is a mask of SQLITE_OPEN_ flags that are valid to be passed
+ /* 0x87f7f is a mask of SQLITE_OPEN_ flags that are valid to be passed
** down into the VFS layer. Some SQLITE_OPEN_ flags (for example,
** SQLITE_OPEN_FULLMUTEX or SQLITE_OPEN_SHAREDCACHE) are blocked before
** reaching the VFS. */
- rc = pVfs->xOpen(pVfs, zPath, pFile, flags & 0x87f3f, pFlagsOut);
+ rc = pVfs->xOpen(pVfs, zPath, pFile, flags & 0x87f7f, pFlagsOut);
assert( rc==SQLITE_OK || pFile->pMethods==0 );
return rc;
}
SQLITE_PRIVATE int sqlite3OsDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){
+ DO_OS_MALLOC_TEST(0);
+ assert( dirSync==0 || dirSync==1 );
return pVfs->xDelete(pVfs, zPath, dirSync);
}
SQLITE_PRIVATE int sqlite3OsAccess(
@@ -13855,6 +14809,7 @@
int nPathOut,
char *zPathOut
){
+ DO_OS_MALLOC_TEST(0);
zPathOut[0] = 0;
return pVfs->xFullPathname(pVfs, zPath, nPathOut, zPathOut);
}
@@ -13905,7 +14860,7 @@
){
int rc = SQLITE_NOMEM;
sqlite3_file *pFile;
- pFile = (sqlite3_file *)sqlite3Malloc(pVfs->szOsFile);
+ pFile = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile);
if( pFile ){
rc = sqlite3OsOpen(pVfs, zFile, pFile, flags, pOutFlags);
if( rc!=SQLITE_OK ){
@@ -13994,12 +14949,12 @@
** true.
*/
SQLITE_API int sqlite3_vfs_register(sqlite3_vfs *pVfs, int makeDflt){
- sqlite3_mutex *mutex = 0;
+ MUTEX_LOGIC(sqlite3_mutex *mutex;)
#ifndef SQLITE_OMIT_AUTOINIT
int rc = sqlite3_initialize();
if( rc ) return rc;
#endif
- mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+ MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
sqlite3_mutex_enter(mutex);
vfsUnlink(pVfs);
if( makeDflt || vfsList==0 ){
@@ -14207,6 +15162,47 @@
#ifdef SQLITE_SYSTEM_MALLOC
/*
+** Windows systems have malloc_usable_size() but it is called _msize()
+*/
+#if !defined(HAVE_MALLOC_USABLE_SIZE) && SQLITE_OS_WIN
+# define HAVE_MALLOC_USABLE_SIZE 1
+# define malloc_usable_size _msize
+#endif
+
+#if defined(__APPLE__)
+
+/*
+** Use the zone allocator available on apple products
+*/
+#include <sys/sysctl.h>
+#include <malloc/malloc.h>
+#include <libkern/OSAtomic.h>
+static malloc_zone_t* _sqliteZone_;
+#define SQLITE_MALLOC(x) malloc_zone_malloc(_sqliteZone_, (x))
+#define SQLITE_FREE(x) malloc_zone_free(_sqliteZone_, (x));
+#define SQLITE_REALLOC(x,y) malloc_zone_realloc(_sqliteZone_, (x), (y))
+#define SQLITE_MALLOCSIZE(x) \
+ (_sqliteZone_ ? _sqliteZone_->size(_sqliteZone_,x) : malloc_size(x))
+
+#else /* if not __APPLE__ */
+
+/*
+** Use standard C library malloc and free on non-Apple systems.
+*/
+#define SQLITE_MALLOC(x) malloc(x)
+#define SQLITE_FREE(x) free(x)
+#define SQLITE_REALLOC(x,y) realloc((x),(y))
+
+#ifdef HAVE_MALLOC_USABLE_SIZE
+#include <malloc.h>
+#define SQLITE_MALLOCSIZE(x) malloc_usable_size(x)
+#else
+#undef SQLITE_MALLOCSIZE
+#endif
+
+#endif /* __APPLE__ or not __APPLE__ */
+
+/*
** Like malloc(), but remember the size of the allocation
** so that we can find it later using sqlite3MemSize().
**
@@ -14215,10 +15211,18 @@
** routines.
*/
static void *sqlite3MemMalloc(int nByte){
+#ifdef SQLITE_MALLOCSIZE
+ void *p = SQLITE_MALLOC( nByte );
+ if( p==0 ){
+ testcase( sqlite3GlobalConfig.xLog!=0 );
+ sqlite3_log(SQLITE_NOMEM, "failed to allocate %u bytes of memory", nByte);
+ }
+ return p;
+#else
sqlite3_int64 *p;
assert( nByte>0 );
nByte = ROUND8(nByte);
- p = malloc( nByte+8 );
+ p = SQLITE_MALLOC( nByte+8 );
if( p ){
p[0] = nByte;
p++;
@@ -14227,6 +15231,7 @@
sqlite3_log(SQLITE_NOMEM, "failed to allocate %u bytes of memory", nByte);
}
return (void *)p;
+#endif
}
/*
@@ -14238,10 +15243,14 @@
** by higher-level routines.
*/
static void sqlite3MemFree(void *pPrior){
+#ifdef SQLITE_MALLOCSIZE
+ SQLITE_FREE(pPrior);
+#else
sqlite3_int64 *p = (sqlite3_int64*)pPrior;
assert( pPrior!=0 );
p--;
- free(p);
+ SQLITE_FREE(p);
+#endif
}
/*
@@ -14249,11 +15258,15 @@
** or xRealloc().
*/
static int sqlite3MemSize(void *pPrior){
+#ifdef SQLITE_MALLOCSIZE
+ return pPrior ? (int)SQLITE_MALLOCSIZE(pPrior) : 0;
+#else
sqlite3_int64 *p;
if( pPrior==0 ) return 0;
p = (sqlite3_int64*)pPrior;
p--;
return (int)p[0];
+#endif
}
/*
@@ -14267,11 +15280,21 @@
** routines and redirected to xFree.
*/
static void *sqlite3MemRealloc(void *pPrior, int nByte){
+#ifdef SQLITE_MALLOCSIZE
+ void *p = SQLITE_REALLOC(pPrior, nByte);
+ if( p==0 ){
+ testcase( sqlite3GlobalConfig.xLog!=0 );
+ sqlite3_log(SQLITE_NOMEM,
+ "failed memory resize %u to %u bytes",
+ SQLITE_MALLOCSIZE(pPrior), nByte);
+ }
+ return p;
+#else
sqlite3_int64 *p = (sqlite3_int64*)pPrior;
assert( pPrior!=0 && nByte>0 );
assert( nByte==ROUND8(nByte) ); /* EV: R-46199-30249 */
p--;
- p = realloc(p, nByte+8 );
+ p = SQLITE_REALLOC(p, nByte+8 );
if( p ){
p[0] = nByte;
p++;
@@ -14282,6 +15305,7 @@
sqlite3MemSize(pPrior), nByte);
}
return (void*)p;
+#endif
}
/*
@@ -14295,6 +15319,34 @@
** Initialize this module.
*/
static int sqlite3MemInit(void *NotUsed){
+#if defined(__APPLE__)
+ int cpuCount;
+ size_t len;
+ if( _sqliteZone_ ){
+ return SQLITE_OK;
+ }
+ len = sizeof(cpuCount);
+ /* One usually wants to use hw.acctivecpu for MT decisions, but not here */
+ sysctlbyname("hw.ncpu", &cpuCount, &len, NULL, 0);
+ if( cpuCount>1 ){
+ /* defer MT decisions to system malloc */
+ _sqliteZone_ = malloc_default_zone();
+ }else{
+ /* only 1 core, use our own zone to contention over global locks,
+ ** e.g. we have our own dedicated locks */
+ bool success;
+ malloc_zone_t* newzone = malloc_create_zone(4096, 0);
+ malloc_set_zone_name(newzone, "Sqlite_Heap");
+ do{
+ success = OSAtomicCompareAndSwapPtrBarrier(NULL, newzone,
+ (void * volatile *)&_sqliteZone_);
+ }while(!_sqliteZone_);
+ if( !success ){
+ /* somebody registered a zone first */
+ malloc_destroy_zone(newzone);
+ }
+ }
+#endif
UNUSED_PARAMETER(NotUsed);
return SQLITE_OK;
}
@@ -14369,6 +15421,7 @@
# define backtrace(A,B) 1
# define backtrace_symbols_fd(A,B,C)
#endif
+/* #include <stdio.h> */
/*
** Each memory allocation looks like this:
@@ -15294,7 +16347,7 @@
** This function assumes that the necessary mutexes, if any, are
** already held by the caller. Hence "Unsafe".
*/
-void memsys3FreeUnsafe(void *pOld){
+static void memsys3FreeUnsafe(void *pOld){
Mem3Block *p = (Mem3Block*)pOld;
int i;
u32 size, x;
@@ -15369,7 +16422,7 @@
/*
** Free memory.
*/
-void memsys3Free(void *pPrior){
+static void memsys3Free(void *pPrior){
assert( pPrior );
memsys3Enter();
memsys3FreeUnsafe(pPrior);
@@ -15379,7 +16432,7 @@
/*
** Change the size of an existing memory allocation
*/
-void *memsys3Realloc(void *pPrior, int nBytes){
+static void *memsys3Realloc(void *pPrior, int nBytes){
int nOld;
void *p;
if( pPrior==0 ){
@@ -15677,7 +16730,7 @@
*/
u8 *aCtrl;
-} mem5 = { 0 };
+} mem5;
/*
** Access the static variable through a macro for SQLITE_OMIT_WSD
@@ -15992,7 +17045,7 @@
*/
static int memsys5Log(int iValue){
int iLog;
- for(iLog=0; (1<<iLog)<iValue; iLog++);
+ for(iLog=0; (iLog<(int)((sizeof(int)*8)-1)) && (1<<iLog)<iValue; iLog++);
return iLog;
}
@@ -16023,6 +17076,7 @@
zByte = (u8*)sqlite3GlobalConfig.pHeap;
assert( zByte!=0 ); /* sqlite3_config() does not allow otherwise */
+ /* boundaries on sqlite3GlobalConfig.mnReq are enforced in sqlite3_config() */
nMinLog = memsys5Log(sqlite3GlobalConfig.mnReq);
mem5.szAtom = (1<<nMinLog);
while( (int)sizeof(Mem5Link)>mem5.szAtom ){
@@ -16282,7 +17336,7 @@
}
#endif
-#endif /* SQLITE_MUTEX_OMIT */
+#endif /* !defined(SQLITE_MUTEX_OMIT) */
/************** End of mutex.c ***********************************************/
/************** Begin file mutex_noop.c **************************************/
@@ -16489,8 +17543,8 @@
SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
return sqlite3NoopMutex();
}
-#endif /* SQLITE_MUTEX_NOOP */
-#endif /* SQLITE_MUTEX_OMIT */
+#endif /* defined(SQLITE_MUTEX_NOOP) */
+#endif /* !defined(SQLITE_MUTEX_OMIT) */
/************** End of mutex_noop.c ******************************************/
/************** Begin file mutex_os2.c ***************************************/
@@ -16526,11 +17580,16 @@
struct sqlite3_mutex {
HMTX mutex; /* Mutex controlling the lock */
int id; /* Mutex type */
- int nRef; /* Number of references */
- TID owner; /* Thread holding this mutex */
+#ifdef SQLITE_DEBUG
+ int trace; /* True to trace changes */
+#endif
};
-#define OS2_MUTEX_INITIALIZER 0,0,0,0
+#ifdef SQLITE_DEBUG
+#define SQLITE3_MUTEX_INITIALIZER { 0, 0, 0 }
+#else
+#define SQLITE3_MUTEX_INITIALIZER { 0, 0 }
+#endif
/*
** Initialize and deinitialize the mutex subsystem.
@@ -16546,11 +17605,14 @@
** to sqlite3_mutex_alloc() is one of these integer constants:
**
** <ul>
-** <li> SQLITE_MUTEX_FAST 0
-** <li> SQLITE_MUTEX_RECURSIVE 1
-** <li> SQLITE_MUTEX_STATIC_MASTER 2
-** <li> SQLITE_MUTEX_STATIC_MEM 3
-** <li> SQLITE_MUTEX_STATIC_PRNG 4
+** <li> SQLITE_MUTEX_FAST
+** <li> SQLITE_MUTEX_RECURSIVE
+** <li> SQLITE_MUTEX_STATIC_MASTER
+** <li> SQLITE_MUTEX_STATIC_MEM
+** <li> SQLITE_MUTEX_STATIC_MEM2
+** <li> SQLITE_MUTEX_STATIC_PRNG
+** <li> SQLITE_MUTEX_STATIC_LRU
+** <li> SQLITE_MUTEX_STATIC_LRU2
** </ul>
**
** The first two constants cause sqlite3_mutex_alloc() to create
@@ -16564,7 +17626,7 @@
** might return such a mutex in response to SQLITE_MUTEX_FAST.
**
** The other allowed parameters to sqlite3_mutex_alloc() each return
-** a pointer to a static preexisting mutex. Three static mutexes are
+** a pointer to a static preexisting mutex. Six static mutexes are
** used by the current version of SQLite. Future versions of SQLite
** may add additional static mutexes. Static mutexes are for internal
** use by SQLite only. Applications that use SQLite mutexes should
@@ -16594,13 +17656,13 @@
}
default: {
static volatile int isInit = 0;
- static sqlite3_mutex staticMutexes[] = {
- { OS2_MUTEX_INITIALIZER, },
- { OS2_MUTEX_INITIALIZER, },
- { OS2_MUTEX_INITIALIZER, },
- { OS2_MUTEX_INITIALIZER, },
- { OS2_MUTEX_INITIALIZER, },
- { OS2_MUTEX_INITIALIZER, },
+ static sqlite3_mutex staticMutexes[6] = {
+ SQLITE3_MUTEX_INITIALIZER,
+ SQLITE3_MUTEX_INITIALIZER,
+ SQLITE3_MUTEX_INITIALIZER,
+ SQLITE3_MUTEX_INITIALIZER,
+ SQLITE3_MUTEX_INITIALIZER,
+ SQLITE3_MUTEX_INITIALIZER,
};
if ( !isInit ){
APIRET rc;
@@ -16646,9 +17708,14 @@
** SQLite is careful to deallocate every mutex that it allocates.
*/
static void os2MutexFree(sqlite3_mutex *p){
- if( p==0 ) return;
- assert( p->nRef==0 );
+#ifdef SQLITE_DEBUG
+ TID tid;
+ PID pid;
+ ULONG ulCount;
+ DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount);
+ assert( ulCount==0 );
assert( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE );
+#endif
DosCloseMutexSem( p->mutex );
sqlite3_free( p );
}
@@ -16663,26 +17730,29 @@
PID pid;
ULONG ulCount;
PTIB ptib;
- if( p!=0 ) {
- DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount);
- } else {
- DosGetInfoBlocks(&ptib, NULL);
- tid = ptib->tib_ptib2->tib2_ultid;
- }
- return p==0 || (p->nRef!=0 && p->owner==tid);
+ DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount);
+ if( ulCount==0 || ( ulCount>1 && p->id!=SQLITE_MUTEX_RECURSIVE ) )
+ return 0;
+ DosGetInfoBlocks(&ptib, NULL);
+ return tid==ptib->tib_ptib2->tib2_ultid;
}
static int os2MutexNotheld(sqlite3_mutex *p){
TID tid;
PID pid;
ULONG ulCount;
PTIB ptib;
- if( p!= 0 ) {
- DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount);
- } else {
- DosGetInfoBlocks(&ptib, NULL);
- tid = ptib->tib_ptib2->tib2_ultid;
- }
- return p==0 || p->nRef==0 || p->owner!=tid;
+ DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount);
+ if( ulCount==0 )
+ return 1;
+ DosGetInfoBlocks(&ptib, NULL);
+ return tid!=ptib->tib_ptib2->tib2_ultid;
+}
+static void os2MutexTrace(sqlite3_mutex *p, char *pAction){
+ TID tid;
+ PID pid;
+ ULONG ulCount;
+ DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount);
+ printf("%s mutex %p (%d) with nRef=%ld\n", pAction, (void*)p, p->trace, ulCount);
}
#endif
@@ -16698,32 +17768,21 @@
** more than once, the behavior is undefined.
*/
static void os2MutexEnter(sqlite3_mutex *p){
- TID tid;
- PID holder1;
- ULONG holder2;
- if( p==0 ) return;
assert( p->id==SQLITE_MUTEX_RECURSIVE || os2MutexNotheld(p) );
DosRequestMutexSem(p->mutex, SEM_INDEFINITE_WAIT);
- DosQueryMutexSem(p->mutex, &holder1, &tid, &holder2);
- p->owner = tid;
- p->nRef++;
+#ifdef SQLITE_DEBUG
+ if( p->trace ) os2MutexTrace(p, "enter");
+#endif
}
static int os2MutexTry(sqlite3_mutex *p){
- int rc;
- TID tid;
- PID holder1;
- ULONG holder2;
- if( p==0 ) return SQLITE_OK;
+ int rc = SQLITE_BUSY;
assert( p->id==SQLITE_MUTEX_RECURSIVE || os2MutexNotheld(p) );
- if( DosRequestMutexSem(p->mutex, SEM_IMMEDIATE_RETURN) == NO_ERROR) {
- DosQueryMutexSem(p->mutex, &holder1, &tid, &holder2);
- p->owner = tid;
- p->nRef++;
+ if( DosRequestMutexSem(p->mutex, SEM_IMMEDIATE_RETURN) == NO_ERROR ) {
rc = SQLITE_OK;
- } else {
- rc = SQLITE_BUSY;
+#ifdef SQLITE_DEBUG
+ if( p->trace ) os2MutexTrace(p, "try");
+#endif
}
-
return rc;
}
@@ -16734,16 +17793,11 @@
** is not currently allocated. SQLite will never do either.
*/
static void os2MutexLeave(sqlite3_mutex *p){
- TID tid;
- PID holder1;
- ULONG holder2;
- if( p==0 ) return;
- assert( p->nRef>0 );
- DosQueryMutexSem(p->mutex, &holder1, &tid, &holder2);
- assert( p->owner==tid );
- p->nRef--;
- assert( p->nRef==0 || p->id==SQLITE_MUTEX_RECURSIVE );
+ assert( os2MutexHeld(p) );
DosReleaseMutexSem(p->mutex);
+#ifdef SQLITE_DEBUG
+ if( p->trace ) os2MutexTrace(p, "leave");
+#endif
}
SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
@@ -16758,6 +17812,9 @@
#ifdef SQLITE_DEBUG
os2MutexHeld,
os2MutexNotheld
+#else
+ 0,
+ 0
#endif
};
@@ -16867,7 +17924,7 @@
** <li> SQLITE_MUTEX_STATIC_MEM2
** <li> SQLITE_MUTEX_STATIC_PRNG
** <li> SQLITE_MUTEX_STATIC_LRU
-** <li> SQLITE_MUTEX_STATIC_LRU2
+** <li> SQLITE_MUTEX_STATIC_PMEM
** </ul>
**
** The first two constants cause sqlite3_mutex_alloc() to create
@@ -17116,7 +18173,7 @@
return &sMutex;
}
-#endif /* SQLITE_MUTEX_PTHREAD */
+#endif /* SQLITE_MUTEX_PTHREADS */
/************** End of mutex_unix.c ******************************************/
/************** Begin file mutex_w32.c ***************************************/
@@ -17277,7 +18334,7 @@
** <li> SQLITE_MUTEX_STATIC_MEM2
** <li> SQLITE_MUTEX_STATIC_PRNG
** <li> SQLITE_MUTEX_STATIC_LRU
-** <li> SQLITE_MUTEX_STATIC_LRU2
+** <li> SQLITE_MUTEX_STATIC_PMEM
** </ul>
**
** The first two constants cause sqlite3_mutex_alloc() to create
@@ -17401,7 +18458,7 @@
#endif
#ifdef SQLITE_DEBUG
if( rc==SQLITE_OK && p->trace ){
- printf("enter mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef);
+ printf("try mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef);
}
#endif
return rc;
@@ -17468,6 +18525,7 @@
**
** Memory allocation functions used throughout sqlite.
*/
+/* #include <stdarg.h> */
/*
** Attempt to release up to n bytes of non-essential memory currently
@@ -17584,7 +18642,8 @@
sqlite3_int64 priorLimit;
sqlite3_int64 excess;
#ifndef SQLITE_OMIT_AUTOINIT
- sqlite3_initialize();
+ int rc = sqlite3_initialize();
+ if( rc ) return -1;
#endif
sqlite3_mutex_enter(mem0.mutex);
priorLimit = mem0.alarmThreshold;
@@ -17720,7 +18779,7 @@
sqlite3StatusSet(SQLITE_STATUS_MALLOC_SIZE, n);
if( mem0.alarmCallback!=0 ){
int nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
- if( nUsed+nFull >= mem0.alarmThreshold ){
+ if( nUsed >= mem0.alarmThreshold - nFull ){
mem0.nearlyFull = 1;
sqlite3MallocAlarm(nFull);
}else{
@@ -17858,7 +18917,7 @@
pSlot->pNext = mem0.pScratchFree;
mem0.pScratchFree = pSlot;
mem0.nScratchFree++;
- assert( mem0.nScratchFree<=sqlite3GlobalConfig.nScratch );
+ assert( mem0.nScratchFree <= (u32)sqlite3GlobalConfig.nScratch );
sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_USED, -1);
sqlite3_mutex_leave(mem0.mutex);
}else{
@@ -17961,7 +19020,7 @@
** Change the size of an existing memory allocation
*/
SQLITE_PRIVATE void *sqlite3Realloc(void *pOld, int nBytes){
- int nOld, nNew;
+ int nOld, nNew, nDiff;
void *pNew;
if( pOld==0 ){
return sqlite3Malloc(nBytes); /* IMP: R-28354-25769 */
@@ -17984,9 +19043,10 @@
}else if( sqlite3GlobalConfig.bMemstat ){
sqlite3_mutex_enter(mem0.mutex);
sqlite3StatusSet(SQLITE_STATUS_MALLOC_SIZE, nBytes);
- if( sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED)+nNew-nOld >=
- mem0.alarmThreshold ){
- sqlite3MallocAlarm(nNew-nOld);
+ nDiff = nNew - nOld;
+ if( sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED) >=
+ mem0.alarmThreshold-nDiff ){
+ sqlite3MallocAlarm(nDiff);
}
assert( sqlite3MemdebugHasType(pOld, MEMTYPE_HEAP) );
assert( sqlite3MemdebugNoType(pOld, ~MEMTYPE_HEAP) );
@@ -18070,14 +19130,20 @@
if( db->mallocFailed ){
return 0;
}
- if( db->lookaside.bEnabled && n<=db->lookaside.sz
- && (pBuf = db->lookaside.pFree)!=0 ){
- db->lookaside.pFree = pBuf->pNext;
- db->lookaside.nOut++;
- if( db->lookaside.nOut>db->lookaside.mxOut ){
- db->lookaside.mxOut = db->lookaside.nOut;
+ if( db->lookaside.bEnabled ){
+ if( n>db->lookaside.sz ){
+ db->lookaside.anStat[1]++;
+ }else if( (pBuf = db->lookaside.pFree)==0 ){
+ db->lookaside.anStat[2]++;
+ }else{
+ db->lookaside.pFree = pBuf->pNext;
+ db->lookaside.nOut++;
+ db->lookaside.anStat[0]++;
+ if( db->lookaside.nOut>db->lookaside.mxOut ){
+ db->lookaside.mxOut = db->lookaside.nOut;
+ }
+ return (void*)pBuf;
}
- return (void*)pBuf;
}
}
#else
@@ -18234,48 +19300,10 @@
**
**************************************************************************
**
-** The following modules is an enhanced replacement for the "printf" subroutines
-** found in the standard C library. The following enhancements are
-** supported:
-**
-** + Additional functions. The standard set of "printf" functions
-** includes printf, fprintf, sprintf, vprintf, vfprintf, and
-** vsprintf. This module adds the following:
-**
-** * snprintf -- Works like sprintf, but has an extra argument
-** which is the size of the buffer written to.
-**
-** * mprintf -- Similar to sprintf. Writes output to memory
-** obtained from malloc.
-**
-** * xprintf -- Calls a function to dispose of output.
-**
-** * nprintf -- No output, but returns the number of characters
-** that would have been output by printf.
-**
-** * A v- version (ex: vsnprintf) of every function is also
-** supplied.
-**
-** + A few extensions to the formatting notation are supported:
-**
-** * The "=" flag (similar to "-") causes the output to be
-** be centered in the appropriately sized field.
-**
-** * The %b field outputs an integer in binary notation.
-**
-** * The %c field now accepts a precision. The character output
-** is repeated by the number of times the precision specifies.
-**
-** * The %' field works like %c, but takes as its character the
-** next character of the format string, instead of the next
-** argument. For example, printf("%.78'-") prints 78 minus
-** signs, the same as printf("%.78c",'-').
-**
-** + When compiled using GCC on a SPARC, this version of printf is
-** faster than the library printf for SUN OS 4.1.
-**
-** + All functions are fully reentrant.
-**
+** This file contains code for a set of "printf"-like routines. These
+** routines format strings much like the printf() from the standard C
+** library, though the implementation here has enhancements to support
+** SQLlite.
*/
/*
@@ -18400,7 +19428,7 @@
/*
** Append N space characters to the given string buffer.
*/
-static void appendSpace(StrAccum *pAccum, int N){
+SQLITE_PRIVATE void sqlite3AppendSpace(StrAccum *pAccum, int N){
static const char zSpaces[] = " ";
while( N>=(int)sizeof(zSpaces)-1 ){
sqlite3StrAccumAppend(pAccum, zSpaces, sizeof(zSpaces)-1);
@@ -18413,43 +19441,15 @@
/*
** On machines with a small stack size, you can redefine the
-** SQLITE_PRINT_BUF_SIZE to be less than 350.
+** SQLITE_PRINT_BUF_SIZE to be something smaller, if desired.
*/
#ifndef SQLITE_PRINT_BUF_SIZE
-# if defined(SQLITE_SMALL_STACK)
-# define SQLITE_PRINT_BUF_SIZE 50
-# else
-# define SQLITE_PRINT_BUF_SIZE 350
-# endif
+# define SQLITE_PRINT_BUF_SIZE 70
#endif
#define etBUFSIZE SQLITE_PRINT_BUF_SIZE /* Size of the output buffer */
/*
-** The root program. All variations call this core.
-**
-** INPUTS:
-** func This is a pointer to a function taking three arguments
-** 1. A pointer to anything. Same as the "arg" parameter.
-** 2. A pointer to the list of characters to be output
-** (Note, this list is NOT null terminated.)
-** 3. An integer number of characters to be output.
-** (Note: This number might be zero.)
-**
-** arg This is the pointer to anything which will be passed as the
-** first argument to "func". Use it for whatever you like.
-**
-** fmt This is the format string, as in the usual print.
-**
-** ap This is a pointer to a list of arguments. Same as in
-** vfprint.
-**
-** OUTPUTS:
-** The return value is the total number of characters sent to
-** the function "func". Returns -1 on a error.
-**
-** Note that the order in which automatic variables are declared below
-** seems to make a big difference in determining how fast this beast
-** will run.
+** Render a string given by "fmt" into the StrAccum object.
*/
SQLITE_PRIVATE void sqlite3VXPrintf(
StrAccum *pAccum, /* Accumulate results here */
@@ -18472,23 +19472,23 @@
etByte flag_long; /* True if "l" flag is present */
etByte flag_longlong; /* True if the "ll" flag is present */
etByte done; /* Loop termination flag */
+ etByte xtype = 0; /* Conversion paradigm */
+ char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */
sqlite_uint64 longvalue; /* Value for integer types */
LONGDOUBLE_TYPE realvalue; /* Value for real types */
const et_info *infop; /* Pointer to the appropriate info structure */
- char buf[etBUFSIZE]; /* Conversion buffer */
- char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */
- etByte xtype = 0; /* Conversion paradigm */
- char *zExtra; /* Extra memory used for etTCLESCAPE conversions */
+ char *zOut; /* Rendering buffer */
+ int nOut; /* Size of the rendering buffer */
+ char *zExtra; /* Malloced memory used by some conversion */
#ifndef SQLITE_OMIT_FLOATING_POINT
int exp, e2; /* exponent of real numbers */
+ int nsd; /* Number of significant digits returned */
double rounder; /* Used for rounding floating point values */
etByte flag_dp; /* True if decimal point should be shown */
etByte flag_rtz; /* True if trailing zeros should be removed */
- etByte flag_exp; /* True to force display of the exponent */
- int nsd; /* Number of significant digits returned */
#endif
+ char buf[etBUFSIZE]; /* Conversion buffer */
- length = 0;
bufpt = 0;
for(; (c=(*fmt))!=0; ++fmt){
if( c!='%' ){
@@ -18533,9 +19533,6 @@
c = *++fmt;
}
}
- if( width > etBUFSIZE-10 ){
- width = etBUFSIZE-10;
- }
/* Get the precision */
if( c=='.' ){
precision = 0;
@@ -18582,12 +19579,6 @@
}
zExtra = 0;
-
- /* Limit the precision to prevent overflowing buf[] during conversion */
- if( precision>etBUFSIZE-40 && (infop->flags & FLAG_STRING)==0 ){
- precision = etBUFSIZE-40;
- }
-
/*
** At this point, variables are initialized as follows:
**
@@ -18626,7 +19617,11 @@
v = va_arg(ap,int);
}
if( v<0 ){
- longvalue = -v;
+ if( v==SMALLEST_INT64 ){
+ longvalue = ((u64)1)<<63;
+ }else{
+ longvalue = -v;
+ }
prefix = '-';
}else{
longvalue = v;
@@ -18648,16 +19643,26 @@
if( flag_zeropad && precision<width-(prefix!=0) ){
precision = width-(prefix!=0);
}
- bufpt = &buf[etBUFSIZE-1];
+ if( precision<etBUFSIZE-10 ){
+ nOut = etBUFSIZE;
+ zOut = buf;
+ }else{
+ nOut = precision + 10;
+ zOut = zExtra = sqlite3Malloc( nOut );
+ if( zOut==0 ){
+ pAccum->mallocFailed = 1;
+ return;
+ }
+ }
+ bufpt = &zOut[nOut-1];
if( xtype==etORDINAL ){
static const char zOrd[] = "thstndrd";
int x = (int)(longvalue % 10);
if( x>=4 || (longvalue/10)%10==1 ){
x = 0;
}
- buf[etBUFSIZE-3] = zOrd[x*2];
- buf[etBUFSIZE-2] = zOrd[x*2+1];
- bufpt -= 2;
+ *(--bufpt) = zOrd[x*2+1];
+ *(--bufpt) = zOrd[x*2];
}
{
register const char *cset; /* Use registers for speed */
@@ -18669,7 +19674,7 @@
longvalue = longvalue/base;
}while( longvalue>0 );
}
- length = (int)(&buf[etBUFSIZE-1]-bufpt);
+ length = (int)(&zOut[nOut-1]-bufpt);
for(idx=precision-length; idx>0; idx--){
*(--bufpt) = '0'; /* Zero pad */
}
@@ -18680,7 +19685,7 @@
pre = &aPrefix[infop->prefix];
for(; (x=(*pre))!=0; pre++) *(--bufpt) = x;
}
- length = (int)(&buf[etBUFSIZE-1]-bufpt);
+ length = (int)(&zOut[nOut-1]-bufpt);
break;
case etFLOAT:
case etEXP:
@@ -18690,7 +19695,6 @@
length = 0;
#else
if( precision<0 ) precision = 6; /* Set default precision */
- if( precision>etBUFSIZE/2-10 ) precision = etBUFSIZE/2-10;
if( realvalue<0.0 ){
realvalue = -realvalue;
prefix = '-';
@@ -18738,7 +19742,6 @@
** If the field type is etGENERIC, then convert to either etEXP
** or etFLOAT, as appropriate.
*/
- flag_exp = xtype==etEXP;
if( xtype!=etFLOAT ){
realvalue += rounder;
if( realvalue>=10.0 ){ realvalue *= 0.1; exp++; }
@@ -18759,6 +19762,14 @@
}else{
e2 = exp;
}
+ if( e2+precision+width > etBUFSIZE - 15 ){
+ bufpt = zExtra = sqlite3Malloc( e2+precision+width+15 );
+ if( bufpt==0 ){
+ pAccum->mallocFailed = 1;
+ return;
+ }
+ }
+ zOut = bufpt;
nsd = 0;
flag_dp = (precision>0 ?1:0) | flag_alternateform | flag_altform2;
/* The sign in front of the number */
@@ -18790,7 +19801,7 @@
/* Remove trailing zeros and the "." if no digits follow the "." */
if( flag_rtz && flag_dp ){
while( bufpt[-1]=='0' ) *(--bufpt) = 0;
- assert( bufpt>buf );
+ assert( bufpt>zOut );
if( bufpt[-1]=='.' ){
if( flag_altform2 ){
*(bufpt++) = '0';
@@ -18800,7 +19811,7 @@
}
}
/* Add the "eNNN" suffix */
- if( flag_exp || xtype==etEXP ){
+ if( xtype==etEXP ){
*(bufpt++) = aDigits[infop->charset];
if( exp<0 ){
*(bufpt++) = '-'; exp = -exp;
@@ -18819,8 +19830,8 @@
/* The converted number is in buf[] and zero terminated. Output it.
** Note that the number is in the usual order, not reversed as with
** integer conversions. */
- length = (int)(bufpt-buf);
- bufpt = buf;
+ length = (int)(bufpt-zOut);
+ bufpt = zOut;
/* Special case: Add leading zeros if the flag_zeropad flag is
** set and we are not left justified */
@@ -18945,7 +19956,7 @@
register int nspace;
nspace = width-length;
if( nspace>0 ){
- appendSpace(pAccum, nspace);
+ sqlite3AppendSpace(pAccum, nspace);
}
}
if( length>0 ){
@@ -18955,12 +19966,10 @@
register int nspace;
nspace = width-length;
if( nspace>0 ){
- appendSpace(pAccum, nspace);
+ sqlite3AppendSpace(pAccum, nspace);
}
}
- if( zExtra ){
- sqlite3_free(zExtra);
- }
+ sqlite3_free(zExtra);
}/* End for loop over the format string */
} /* End of function */
@@ -18974,6 +19983,7 @@
testcase(p->mallocFailed);
return;
}
+ assert( p->zText!=0 || p->nChar==0 );
if( N<0 ){
N = sqlite3Strlen30(z);
}
@@ -18989,6 +19999,7 @@
return;
}
}else{
+ char *zOld = (p->zText==p->zBase ? 0 : p->zText);
i64 szNew = p->nChar;
szNew += N + 1;
if( szNew > p->mxAlloc ){
@@ -18999,13 +20010,12 @@
p->nAlloc = (int)szNew;
}
if( p->useMalloc==1 ){
- zNew = sqlite3DbMallocRaw(p->db, p->nAlloc );
+ zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc);
}else{
- zNew = sqlite3_malloc(p->nAlloc);
+ zNew = sqlite3_realloc(zOld, p->nAlloc);
}
if( zNew ){
- memcpy(zNew, p->zText, p->nChar);
- sqlite3StrAccumReset(p);
+ if( zOld==0 && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar);
p->zText = zNew;
}else{
p->mallocFailed = 1;
@@ -19014,6 +20024,7 @@
}
}
}
+ assert( p->zText );
memcpy(&p->zText[p->nChar], z, N);
p->nChar += N;
}
@@ -19160,21 +20171,28 @@
** current locale settings. This is important for SQLite because we
** are not able to use a "," as the decimal point in place of "." as
** specified by some locales.
+**
+** Oops: The first two arguments of sqlite3_snprintf() are backwards
+** from the snprintf() standard. Unfortunately, it is too late to change
+** this without breaking compatibility, so we just have to live with the
+** mistake.
+**
+** sqlite3_vsnprintf() is the varargs version.
*/
+SQLITE_API char *sqlite3_vsnprintf(int n, char *zBuf, const char *zFormat, va_list ap){
+ StrAccum acc;
+ if( n<=0 ) return zBuf;
+ sqlite3StrAccumInit(&acc, zBuf, n, 0);
+ acc.useMalloc = 0;
+ sqlite3VXPrintf(&acc, 0, zFormat, ap);
+ return sqlite3StrAccumFinish(&acc);
+}
SQLITE_API char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){
char *z;
va_list ap;
- StrAccum acc;
-
- if( n<=0 ){
- return zBuf;
- }
- sqlite3StrAccumInit(&acc, zBuf, n, 0);
- acc.useMalloc = 0;
va_start(ap,zFormat);
- sqlite3VXPrintf(&acc, 0, zFormat, ap);
+ z = sqlite3_vsnprintf(n, zBuf, zFormat, ap);
va_end(ap);
- z = sqlite3StrAccumFinish(&acc);
return z;
}
@@ -19427,6 +20445,7 @@
** 0xfe 0xff big-endian utf-16 follows
**
*/
+/* #include <assert.h> */
#ifndef SQLITE_AMALGAMATION
/*
@@ -19554,11 +20573,11 @@
|| (c&0xFFFFF800)==0xD800 \
|| (c&0xFFFFFFFE)==0xFFFE ){ c = 0xFFFD; } \
}
-SQLITE_PRIVATE int sqlite3Utf8Read(
+SQLITE_PRIVATE u32 sqlite3Utf8Read(
const unsigned char *zIn, /* First byte of UTF-8 character */
const unsigned char **pzNext /* Write first byte past UTF-8 char here */
){
- int c;
+ unsigned int c;
/* Same as READ_UTF8() above but without the zTerm parameter.
** For this routine, we assume the UTF8 string is always zero-terminated.
@@ -19801,15 +20820,15 @@
** This has the effect of making sure that the string is well-formed
** UTF-8. Miscoded characters are removed.
**
-** The translation is done in-place (since it is impossible for the
-** correct UTF-8 encoding to be longer than a malformed encoding).
+** The translation is done in-place and aborted if the output
+** overruns the input.
*/
SQLITE_PRIVATE int sqlite3Utf8To8(unsigned char *zIn){
unsigned char *zOut = zIn;
unsigned char *zStart = zIn;
u32 c;
- while( zIn[0] ){
+ while( zIn[0] && zOut<=zIn ){
c = sqlite3Utf8Read(zIn, (const u8**)&zIn);
if( c!=0xfffd ){
WRITE_UTF8(zOut, c);
@@ -19855,7 +20874,7 @@
** If a malloc failure occurs, NULL is returned and the db.mallocFailed
** flag set.
*/
-#ifdef SQLITE_ENABLE_STAT2
+#ifdef SQLITE_ENABLE_STAT3
SQLITE_PRIVATE char *sqlite3Utf8to16(sqlite3 *db, u8 enc, char *z, int n, int *pnOut){
Mem m;
memset(&m, 0, sizeof(m));
@@ -19969,6 +20988,7 @@
** strings, and stuff like that.
**
*/
+/* #include <stdarg.h> */
#ifdef SQLITE_HAVE_ISNAN
# include <math.h>
#endif
@@ -19978,8 +20998,8 @@
*/
#ifdef SQLITE_COVERAGE_TEST
SQLITE_PRIVATE void sqlite3Coverage(int x){
- static int dummy = 0;
- dummy += x;
+ static unsigned dummy = 0;
+ dummy += (unsigned)x;
}
#endif
@@ -20283,7 +21303,7 @@
}
/* copy digits to exponent */
while( z<zEnd && sqlite3Isdigit(*z) ){
- e = e*10 + (*z - '0');
+ e = e<10000 ? (e*10 + (*z - '0')) : 10000;
z+=incr;
eValid = 1;
}
@@ -20334,6 +21354,12 @@
result = s * scale;
result *= 1.0e+308;
}
+ }else if( e>=342 ){
+ if( esign<0 ){
+ result = 0.0*s;
+ }else{
+ result = 1e308*1e308*s; /* Infinity */
+ }
}else{
/* 1.0e+22 is the largest power of 10 than can be
** represented exactly. */
@@ -20393,14 +21419,17 @@
/*
-** Convert zNum to a 64-bit signed integer and write
-** the value of the integer into *pNum.
-** If zNum is exactly 9223372036854665808, return 2.
-** This is a special case as the context will determine
-** if it is too big (used as a negative).
-** If zNum is not an integer or is an integer that
-** is too large to be expressed with 64 bits,
-** then return 1. Otherwise return 0.
+** Convert zNum to a 64-bit signed integer.
+**
+** If the zNum value is representable as a 64-bit twos-complement
+** integer, then write that value into *pNum and return 0.
+**
+** If zNum is exactly 9223372036854665808, return 2. This special
+** case is broken out because while 9223372036854665808 cannot be a
+** signed 64-bit integer, its negative -9223372036854665808 can be.
+**
+** If zNum is too big for a 64-bit integer and is not
+** 9223372036854665808 then return 1.
**
** length is the number of bytes in the string (bytes, not characters).
** The string is not necessarily zero-terminated. The encoding is
@@ -20408,7 +21437,7 @@
*/
SQLITE_PRIVATE int sqlite3Atoi64(const char *zNum, i64 *pNum, int length, u8 enc){
int incr = (enc==SQLITE_UTF8?1:2);
- i64 v = 0;
+ u64 u = 0;
int neg = 0; /* assume positive */
int i;
int c = 0;
@@ -20416,20 +21445,26 @@
const char *zEnd = zNum + length;
if( enc==SQLITE_UTF16BE ) zNum++;
while( zNum<zEnd && sqlite3Isspace(*zNum) ) zNum+=incr;
- if( zNum>=zEnd ) goto do_atoi_calc;
- if( *zNum=='-' ){
- neg = 1;
- zNum+=incr;
- }else if( *zNum=='+' ){
- zNum+=incr;
+ if( zNum<zEnd ){
+ if( *zNum=='-' ){
+ neg = 1;
+ zNum+=incr;
+ }else if( *zNum=='+' ){
+ zNum+=incr;
+ }
}
-do_atoi_calc:
zStart = zNum;
while( zNum<zEnd && zNum[0]=='0' ){ zNum+=incr; } /* Skip leading zeros. */
for(i=0; &zNum[i]<zEnd && (c=zNum[i])>='0' && c<='9'; i+=incr){
- v = v*10 + c - '0';
+ u = u*10 + c - '0';
}
- *pNum = neg ? -v : v;
+ if( u>LARGEST_INT64 ){
+ *pNum = SMALLEST_INT64;
+ }else if( neg ){
+ *pNum = -(i64)u;
+ }else{
+ *pNum = (i64)u;
+ }
testcase( i==18 );
testcase( i==19 );
testcase( i==20 );
@@ -20439,14 +21474,25 @@
return 1;
}else if( i<19*incr ){
/* Less than 19 digits, so we know that it fits in 64 bits */
+ assert( u<=LARGEST_INT64 );
return 0;
}else{
- /* 19-digit numbers must be no larger than 9223372036854775807 if positive
- ** or 9223372036854775808 if negative. Note that 9223372036854665808
- ** is 2^63. Return 1 if to large */
- c=compare2pow63(zNum, incr);
- if( c==0 && neg==0 ) return 2; /* too big, exactly 9223372036854665808 */
- return c<neg ? 0 : 1;
+ /* zNum is a 19-digit numbers. Compare it against 9223372036854775808. */
+ c = compare2pow63(zNum, incr);
+ if( c<0 ){
+ /* zNum is less than 9223372036854775808 so it fits */
+ assert( u<=LARGEST_INT64 );
+ return 0;
+ }else if( c>0 ){
+ /* zNum is greater than 9223372036854775808 so it overflows */
+ return 1;
+ }else{
+ /* zNum is exactly 9223372036854775808. Fits if negative. The
+ ** special case 2 overflow if positive */
+ assert( u-1==LARGEST_INT64 );
+ assert( (*pNum)==SMALLEST_INT64 );
+ return neg ? 0 : 2;
+ }
}
}
@@ -20915,13 +21961,12 @@
-#if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC)
/*
** Translate a single byte of Hex into an integer.
** This routine only works if h really is a valid hexadecimal
** character: 0..9a..fA..F
*/
-static u8 hexToInt(int h){
+SQLITE_PRIVATE u8 sqlite3HexToInt(int h){
assert( (h>='0' && h<='9') || (h>='a' && h<='f') || (h>='A' && h<='F') );
#ifdef SQLITE_ASCII
h += 9*(1&(h>>6));
@@ -20931,7 +21976,6 @@
#endif
return (u8)(h & 0xf);
}
-#endif /* !SQLITE_OMIT_BLOB_LITERAL || SQLITE_HAS_CODEC */
#if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC)
/*
@@ -20948,7 +21992,7 @@
n--;
if( zBlob ){
for(i=0; i<n; i+=2){
- zBlob[i/2] = (hexToInt(z[i])<<4) | hexToInt(z[i+1]);
+ zBlob[i/2] = (sqlite3HexToInt(z[i])<<4) | sqlite3HexToInt(z[i+1]);
}
zBlob[i/2] = 0;
}
@@ -21013,6 +22057,105 @@
}
}
+/*
+** Attempt to add, substract, or multiply the 64-bit signed value iB against
+** the other 64-bit signed integer at *pA and store the result in *pA.
+** Return 0 on success. Or if the operation would have resulted in an
+** overflow, leave *pA unchanged and return 1.
+*/
+SQLITE_PRIVATE int sqlite3AddInt64(i64 *pA, i64 iB){
+ i64 iA = *pA;
+ testcase( iA==0 ); testcase( iA==1 );
+ testcase( iB==-1 ); testcase( iB==0 );
+ if( iB>=0 ){
+ testcase( iA>0 && LARGEST_INT64 - iA == iB );
+ testcase( iA>0 && LARGEST_INT64 - iA == iB - 1 );
+ if( iA>0 && LARGEST_INT64 - iA < iB ) return 1;
+ *pA += iB;
+ }else{
+ testcase( iA<0 && -(iA + LARGEST_INT64) == iB + 1 );
+ testcase( iA<0 && -(iA + LARGEST_INT64) == iB + 2 );
+ if( iA<0 && -(iA + LARGEST_INT64) > iB + 1 ) return 1;
+ *pA += iB;
+ }
+ return 0;
+}
+SQLITE_PRIVATE int sqlite3SubInt64(i64 *pA, i64 iB){
+ testcase( iB==SMALLEST_INT64+1 );
+ if( iB==SMALLEST_INT64 ){
+ testcase( (*pA)==(-1) ); testcase( (*pA)==0 );
+ if( (*pA)>=0 ) return 1;
+ *pA -= iB;
+ return 0;
+ }else{
+ return sqlite3AddInt64(pA, -iB);
+ }
+}
+#define TWOPOWER32 (((i64)1)<<32)
+#define TWOPOWER31 (((i64)1)<<31)
+SQLITE_PRIVATE int sqlite3MulInt64(i64 *pA, i64 iB){
+ i64 iA = *pA;
+ i64 iA1, iA0, iB1, iB0, r;
+
+ iA1 = iA/TWOPOWER32;
+ iA0 = iA % TWOPOWER32;
+ iB1 = iB/TWOPOWER32;
+ iB0 = iB % TWOPOWER32;
+ if( iA1*iB1 != 0 ) return 1;
+ assert( iA1*iB0==0 || iA0*iB1==0 );
+ r = iA1*iB0 + iA0*iB1;
+ testcase( r==(-TWOPOWER31)-1 );
+ testcase( r==(-TWOPOWER31) );
+ testcase( r==TWOPOWER31 );
+ testcase( r==TWOPOWER31-1 );
+ if( r<(-TWOPOWER31) || r>=TWOPOWER31 ) return 1;
+ r *= TWOPOWER32;
+ if( sqlite3AddInt64(&r, iA0*iB0) ) return 1;
+ *pA = r;
+ return 0;
+}
+
+/*
+** Compute the absolute value of a 32-bit signed integer, of possible. Or
+** if the integer has a value of -2147483648, return +2147483647
+*/
+SQLITE_PRIVATE int sqlite3AbsInt32(int x){
+ if( x>=0 ) return x;
+ if( x==(int)0x80000000 ) return 0x7fffffff;
+ return -x;
+}
+
+#ifdef SQLITE_ENABLE_8_3_NAMES
+/*
+** If SQLITE_ENABLE_8_3_NAMES is set at compile-time and if the database
+** filename in zBaseFilename is a URI with the "8_3_names=1" parameter and
+** if filename in z[] has a suffix (a.k.a. "extension") that is longer than
+** three characters, then shorten the suffix on z[] to be the last three
+** characters of the original suffix.
+**
+** If SQLITE_ENABLE_8_3_NAMES is set to 2 at compile-time, then always
+** do the suffix shortening regardless of URI parameter.
+**
+** Examples:
+**
+** test.db-journal => test.nal
+** test.db-wal => test.wal
+** test.db-shm => test.shm
+** test.db-mj7f3319fa => test.9fa
+*/
+SQLITE_PRIVATE void sqlite3FileSuffix3(const char *zBaseFilename, char *z){
+#if SQLITE_ENABLE_8_3_NAMES<2
+ if( sqlite3_uri_boolean(zBaseFilename, "8_3_names", 0) )
+#endif
+ {
+ int i, sz;
+ sz = sqlite3Strlen30(z);
+ for(i=sz-1; i>0 && z[i]!='/' && z[i]!='.'; i--){}
+ if( z[i]=='.' && ALWAYS(sz>i+4) ) memmove(&z[i+1], &z[sz-3], 4);
+ }
+}
+#endif
+
/************** End of util.c ************************************************/
/************** Begin file hash.c ********************************************/
/*
@@ -21029,6 +22172,7 @@
** This is the implementation of generic hash-tables
** used in SQLite.
*/
+/* #include <assert.h> */
/* Turn bulk memory into a hash table object by initializing the
** fields of the Hash structure.
@@ -21323,53 +22467,53 @@
/* 23 */ "Permutation",
/* 24 */ "Compare",
/* 25 */ "Jump",
- /* 26 */ "If",
- /* 27 */ "IfNot",
- /* 28 */ "Column",
- /* 29 */ "Affinity",
- /* 30 */ "MakeRecord",
- /* 31 */ "Count",
- /* 32 */ "Savepoint",
- /* 33 */ "AutoCommit",
- /* 34 */ "Transaction",
- /* 35 */ "ReadCookie",
- /* 36 */ "SetCookie",
- /* 37 */ "VerifyCookie",
- /* 38 */ "OpenRead",
- /* 39 */ "OpenWrite",
- /* 40 */ "OpenAutoindex",
- /* 41 */ "OpenEphemeral",
- /* 42 */ "OpenPseudo",
- /* 43 */ "Close",
- /* 44 */ "SeekLt",
- /* 45 */ "SeekLe",
- /* 46 */ "SeekGe",
- /* 47 */ "SeekGt",
- /* 48 */ "Seek",
- /* 49 */ "NotFound",
- /* 50 */ "Found",
- /* 51 */ "IsUnique",
- /* 52 */ "NotExists",
- /* 53 */ "Sequence",
- /* 54 */ "NewRowid",
- /* 55 */ "Insert",
- /* 56 */ "InsertInt",
- /* 57 */ "Delete",
- /* 58 */ "ResetCount",
- /* 59 */ "RowKey",
- /* 60 */ "RowData",
- /* 61 */ "Rowid",
- /* 62 */ "NullRow",
- /* 63 */ "Last",
- /* 64 */ "Sort",
- /* 65 */ "Rewind",
- /* 66 */ "Prev",
- /* 67 */ "Next",
+ /* 26 */ "Once",
+ /* 27 */ "If",
+ /* 28 */ "IfNot",
+ /* 29 */ "Column",
+ /* 30 */ "Affinity",
+ /* 31 */ "MakeRecord",
+ /* 32 */ "Count",
+ /* 33 */ "Savepoint",
+ /* 34 */ "AutoCommit",
+ /* 35 */ "Transaction",
+ /* 36 */ "ReadCookie",
+ /* 37 */ "SetCookie",
+ /* 38 */ "VerifyCookie",
+ /* 39 */ "OpenRead",
+ /* 40 */ "OpenWrite",
+ /* 41 */ "OpenAutoindex",
+ /* 42 */ "OpenEphemeral",
+ /* 43 */ "SorterOpen",
+ /* 44 */ "OpenPseudo",
+ /* 45 */ "Close",
+ /* 46 */ "SeekLt",
+ /* 47 */ "SeekLe",
+ /* 48 */ "SeekGe",
+ /* 49 */ "SeekGt",
+ /* 50 */ "Seek",
+ /* 51 */ "NotFound",
+ /* 52 */ "Found",
+ /* 53 */ "IsUnique",
+ /* 54 */ "NotExists",
+ /* 55 */ "Sequence",
+ /* 56 */ "NewRowid",
+ /* 57 */ "Insert",
+ /* 58 */ "InsertInt",
+ /* 59 */ "Delete",
+ /* 60 */ "ResetCount",
+ /* 61 */ "SorterCompare",
+ /* 62 */ "SorterData",
+ /* 63 */ "RowKey",
+ /* 64 */ "RowData",
+ /* 65 */ "Rowid",
+ /* 66 */ "NullRow",
+ /* 67 */ "Last",
/* 68 */ "Or",
/* 69 */ "And",
- /* 70 */ "IdxInsert",
- /* 71 */ "IdxDelete",
- /* 72 */ "IdxRowid",
+ /* 70 */ "SorterSort",
+ /* 71 */ "Sort",
+ /* 72 */ "Rewind",
/* 73 */ "IsNull",
/* 74 */ "NotNull",
/* 75 */ "Ne",
@@ -21378,7 +22522,7 @@
/* 78 */ "Le",
/* 79 */ "Lt",
/* 80 */ "Ge",
- /* 81 */ "IdxLT",
+ /* 81 */ "SorterNext",
/* 82 */ "BitAnd",
/* 83 */ "BitOr",
/* 84 */ "ShiftLeft",
@@ -21389,60 +22533,65 @@
/* 89 */ "Divide",
/* 90 */ "Remainder",
/* 91 */ "Concat",
- /* 92 */ "IdxGE",
+ /* 92 */ "Prev",
/* 93 */ "BitNot",
/* 94 */ "String8",
- /* 95 */ "Destroy",
- /* 96 */ "Clear",
- /* 97 */ "CreateIndex",
- /* 98 */ "CreateTable",
- /* 99 */ "ParseSchema",
- /* 100 */ "LoadAnalysis",
- /* 101 */ "DropTable",
- /* 102 */ "DropIndex",
- /* 103 */ "DropTrigger",
- /* 104 */ "IntegrityCk",
- /* 105 */ "RowSetAdd",
- /* 106 */ "RowSetRead",
- /* 107 */ "RowSetTest",
- /* 108 */ "Program",
- /* 109 */ "Param",
- /* 110 */ "FkCounter",
- /* 111 */ "FkIfZero",
- /* 112 */ "MemMax",
- /* 113 */ "IfPos",
- /* 114 */ "IfNeg",
- /* 115 */ "IfZero",
- /* 116 */ "AggStep",
- /* 117 */ "AggFinal",
- /* 118 */ "Checkpoint",
- /* 119 */ "JournalMode",
- /* 120 */ "Vacuum",
- /* 121 */ "IncrVacuum",
- /* 122 */ "Expire",
- /* 123 */ "TableLock",
- /* 124 */ "VBegin",
- /* 125 */ "VCreate",
- /* 126 */ "VDestroy",
- /* 127 */ "VOpen",
- /* 128 */ "VFilter",
- /* 129 */ "VColumn",
+ /* 95 */ "Next",
+ /* 96 */ "SorterInsert",
+ /* 97 */ "IdxInsert",
+ /* 98 */ "IdxDelete",
+ /* 99 */ "IdxRowid",
+ /* 100 */ "IdxLT",
+ /* 101 */ "IdxGE",
+ /* 102 */ "Destroy",
+ /* 103 */ "Clear",
+ /* 104 */ "CreateIndex",
+ /* 105 */ "CreateTable",
+ /* 106 */ "ParseSchema",
+ /* 107 */ "LoadAnalysis",
+ /* 108 */ "DropTable",
+ /* 109 */ "DropIndex",
+ /* 110 */ "DropTrigger",
+ /* 111 */ "IntegrityCk",
+ /* 112 */ "RowSetAdd",
+ /* 113 */ "RowSetRead",
+ /* 114 */ "RowSetTest",
+ /* 115 */ "Program",
+ /* 116 */ "Param",
+ /* 117 */ "FkCounter",
+ /* 118 */ "FkIfZero",
+ /* 119 */ "MemMax",
+ /* 120 */ "IfPos",
+ /* 121 */ "IfNeg",
+ /* 122 */ "IfZero",
+ /* 123 */ "AggStep",
+ /* 124 */ "AggFinal",
+ /* 125 */ "Checkpoint",
+ /* 126 */ "JournalMode",
+ /* 127 */ "Vacuum",
+ /* 128 */ "IncrVacuum",
+ /* 129 */ "Expire",
/* 130 */ "Real",
- /* 131 */ "VNext",
- /* 132 */ "VRename",
- /* 133 */ "VUpdate",
- /* 134 */ "Pagecount",
- /* 135 */ "MaxPgcnt",
- /* 136 */ "Trace",
- /* 137 */ "Noop",
- /* 138 */ "Explain",
- /* 139 */ "NotUsed_139",
- /* 140 */ "NotUsed_140",
+ /* 131 */ "TableLock",
+ /* 132 */ "VBegin",
+ /* 133 */ "VCreate",
+ /* 134 */ "VDestroy",
+ /* 135 */ "VOpen",
+ /* 136 */ "VFilter",
+ /* 137 */ "VColumn",
+ /* 138 */ "VNext",
+ /* 139 */ "VRename",
+ /* 140 */ "VUpdate",
/* 141 */ "ToText",
/* 142 */ "ToBlob",
/* 143 */ "ToNumeric",
/* 144 */ "ToInt",
/* 145 */ "ToReal",
+ /* 146 */ "Pagecount",
+ /* 147 */ "MaxPgcnt",
+ /* 148 */ "Trace",
+ /* 149 */ "Noop",
+ /* 150 */ "Explain",
};
return azName[i];
}
@@ -21537,11 +22686,14 @@
# error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead."
#endif
-#ifdef SQLITE_DEBUG
-SQLITE_PRIVATE int sqlite3OSTrace = 0;
-#define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X
+#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG)
+# ifndef SQLITE_DEBUG_OS_TRACE
+# define SQLITE_DEBUG_OS_TRACE 0
+# endif
+ int sqlite3OSTrace = SQLITE_DEBUG_OS_TRACE;
+# define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X
#else
-#define OSTRACE(X)
+# define OSTRACE(X)
#endif
/*
@@ -21711,20 +22863,35 @@
/************** End of os_common.h *******************************************/
/************** Continuing where we left off in os_os2.c *********************/
+/* Forward references */
+typedef struct os2File os2File; /* The file structure */
+typedef struct os2ShmNode os2ShmNode; /* A shared descritive memory node */
+typedef struct os2ShmLink os2ShmLink; /* A connection to shared-memory */
+
/*
** The os2File structure is subclass of sqlite3_file specific for the OS/2
** protability layer.
*/
-typedef struct os2File os2File;
struct os2File {
const sqlite3_io_methods *pMethod; /* Always the first entry */
HFILE h; /* Handle for accessing the file */
- char* pathToDel; /* Name of file to delete on close, NULL if not */
- unsigned char locktype; /* Type of lock currently held on this file */
+ int flags; /* Flags provided to os2Open() */
+ int locktype; /* Type of lock currently held on this file */
+ int szChunk; /* Chunk size configured by FCNTL_CHUNK_SIZE */
+ char *zFullPathCp; /* Full path name of this file */
+ os2ShmLink *pShmLink; /* Instance of shared memory on this file */
};
#define LOCK_TIMEOUT 10L /* the default locking timeout */
+/*
+** Missing from some versions of the OS/2 toolkit -
+** used to allocate from high memory if possible
+*/
+#ifndef OBJ_ANY
+# define OBJ_ANY 0x00000400
+#endif
+
/*****************************************************************************
** The next group of routines implement the I/O methods specified
** by the sqlite3_io_methods object.
@@ -21734,21 +22901,24 @@
** Close a file.
*/
static int os2Close( sqlite3_file *id ){
- APIRET rc = NO_ERROR;
- os2File *pFile;
- if( id && (pFile = (os2File*)id) != 0 ){
- OSTRACE(( "CLOSE %d\n", pFile->h ));
- rc = DosClose( pFile->h );
- pFile->locktype = NO_LOCK;
- if( pFile->pathToDel != NULL ){
- rc = DosForceDelete( (PSZ)pFile->pathToDel );
- free( pFile->pathToDel );
- pFile->pathToDel = NULL;
- }
- id = 0;
- OpenCounter( -1 );
- }
+ APIRET rc;
+ os2File *pFile = (os2File*)id;
+ assert( id!=0 );
+ OSTRACE(( "CLOSE %d (%s)\n", pFile->h, pFile->zFullPathCp ));
+
+ rc = DosClose( pFile->h );
+
+ if( pFile->flags & SQLITE_OPEN_DELETEONCLOSE )
+ DosForceDelete( (PSZ)pFile->zFullPathCp );
+
+ free( pFile->zFullPathCp );
+ pFile->zFullPathCp = NULL;
+ pFile->locktype = NO_LOCK;
+ pFile->h = (HFILE)-1;
+ pFile->flags = 0;
+
+ OpenCounter( -1 );
return rc == NO_ERROR ? SQLITE_OK : SQLITE_IOERR;
}
@@ -21821,10 +22991,21 @@
** Truncate an open file to a specified size
*/
static int os2Truncate( sqlite3_file *id, i64 nByte ){
- APIRET rc = NO_ERROR;
+ APIRET rc;
os2File *pFile = (os2File*)id;
+ assert( id!=0 );
OSTRACE(( "TRUNCATE %d %lld\n", pFile->h, nByte ));
SimulateIOError( return SQLITE_IOERR_TRUNCATE );
+
+ /* If the user has configured a chunk-size for this file, truncate the
+ ** file so that it consists of an integer number of chunks (i.e. the
+ ** actual file size after the operation may be larger than the requested
+ ** size).
+ */
+ if( pFile->szChunk ){
+ nByte = ((nByte + pFile->szChunk - 1)/pFile->szChunk) * pFile->szChunk;
+ }
+
rc = DosSetFileSize( pFile->h, nByte );
return rc == NO_ERROR ? SQLITE_OK : SQLITE_IOERR_TRUNCATE;
}
@@ -22188,8 +23369,22 @@
((os2File*)id)->h, ((os2File*)id)->locktype ));
return SQLITE_OK;
}
+ case SQLITE_FCNTL_CHUNK_SIZE: {
+ ((os2File*)id)->szChunk = *(int*)pArg;
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_SIZE_HINT: {
+ sqlite3_int64 sz = *(sqlite3_int64*)pArg;
+ SimulateIOErrorBenign(1);
+ os2Truncate(id, sz);
+ SimulateIOErrorBenign(0);
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_SYNC_OMITTED: {
+ return SQLITE_OK;
+ }
}
- return SQLITE_ERROR;
+ return SQLITE_NOTFOUND;
}
/*
@@ -22203,6 +23398,7 @@
** same for both.
*/
static int os2SectorSize(sqlite3_file *id){
+ UNUSED_PARAMETER(id);
return SQLITE_DEFAULT_SECTOR_SIZE;
}
@@ -22210,7 +23406,8 @@
** Return a vector of device characteristics.
*/
static int os2DeviceCharacteristics(sqlite3_file *id){
- return 0;
+ UNUSED_PARAMETER(id);
+ return SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN;
}
@@ -22297,26 +23494,682 @@
return out;
}
+
+#ifndef SQLITE_OMIT_WAL
+
+/*
+** Use main database file for interprocess locking. If un-defined
+** a separate file is created for this purpose. The file will be
+** used only to set file locks. There will be no data written to it.
+*/
+#define SQLITE_OS2_NO_WAL_LOCK_FILE
+
+#if 0
+static void _ERR_TRACE( const char *fmt, ... ) {
+ va_list ap;
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
+ fflush(stderr);
+}
+#define ERR_TRACE(rc, msg) \
+ if( (rc) != SQLITE_OK ) _ERR_TRACE msg;
+#else
+#define ERR_TRACE(rc, msg)
+#endif
+
+/*
+** Helper functions to obtain and relinquish the global mutex. The
+** global mutex is used to protect os2ShmNodeList.
+**
+** Function os2ShmMutexHeld() is used to assert() that the global mutex
+** is held when required. This function is only used as part of assert()
+** statements. e.g.
+**
+** os2ShmEnterMutex()
+** assert( os2ShmMutexHeld() );
+** os2ShmLeaveMutex()
+*/
+static void os2ShmEnterMutex(void){
+ sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+}
+static void os2ShmLeaveMutex(void){
+ sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+}
+#ifdef SQLITE_DEBUG
+static int os2ShmMutexHeld(void) {
+ return sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+}
+int GetCurrentProcessId(void) {
+ PPIB pib;
+ DosGetInfoBlocks(NULL, &pib);
+ return (int)pib->pib_ulpid;
+}
+#endif
+
+/*
+** Object used to represent a the shared memory area for a single log file.
+** When multiple threads all reference the same log-summary, each thread has
+** its own os2File object, but they all point to a single instance of this
+** object. In other words, each log-summary is opened only once per process.
+**
+** os2ShmMutexHeld() must be true when creating or destroying
+** this object or while reading or writing the following fields:
+**
+** nRef
+** pNext
+**
+** The following fields are read-only after the object is created:
+**
+** szRegion
+** hLockFile
+** shmBaseName
+**
+** Either os2ShmNode.mutex must be held or os2ShmNode.nRef==0 and
+** os2ShmMutexHeld() is true when reading or writing any other field
+** in this structure.
+**
+*/
+struct os2ShmNode {
+ sqlite3_mutex *mutex; /* Mutex to access this object */
+ os2ShmNode *pNext; /* Next in list of all os2ShmNode objects */
+
+ int szRegion; /* Size of shared-memory regions */
+
+ int nRegion; /* Size of array apRegion */
+ void **apRegion; /* Array of pointers to shared-memory regions */
+
+ int nRef; /* Number of os2ShmLink objects pointing to this */
+ os2ShmLink *pFirst; /* First os2ShmLink object pointing to this */
+
+ HFILE hLockFile; /* File used for inter-process memory locking */
+ char shmBaseName[1]; /* Name of the memory object !!! must last !!! */
+};
+
+
+/*
+** Structure used internally by this VFS to record the state of an
+** open shared memory connection.
+**
+** The following fields are initialized when this object is created and
+** are read-only thereafter:
+**
+** os2Shm.pShmNode
+** os2Shm.id
+**
+** All other fields are read/write. The os2Shm.pShmNode->mutex must be held
+** while accessing any read/write fields.
+*/
+struct os2ShmLink {
+ os2ShmNode *pShmNode; /* The underlying os2ShmNode object */
+ os2ShmLink *pNext; /* Next os2Shm with the same os2ShmNode */
+ u32 sharedMask; /* Mask of shared locks held */
+ u32 exclMask; /* Mask of exclusive locks held */
+#ifdef SQLITE_DEBUG
+ u8 id; /* Id of this connection with its os2ShmNode */
+#endif
+};
+
+
+/*
+** A global list of all os2ShmNode objects.
+**
+** The os2ShmMutexHeld() must be true while reading or writing this list.
+*/
+static os2ShmNode *os2ShmNodeList = NULL;
+
+/*
+** Constants used for locking
+*/
+#ifdef SQLITE_OS2_NO_WAL_LOCK_FILE
+#define OS2_SHM_BASE (PENDING_BYTE + 0x10000) /* first lock byte */
+#else
+#define OS2_SHM_BASE ((22+SQLITE_SHM_NLOCK)*4) /* first lock byte */
+#endif
+
+#define OS2_SHM_DMS (OS2_SHM_BASE+SQLITE_SHM_NLOCK) /* deadman switch */
+
+/*
+** Apply advisory locks for all n bytes beginning at ofst.
+*/
+#define _SHM_UNLCK 1 /* no lock */
+#define _SHM_RDLCK 2 /* shared lock, no wait */
+#define _SHM_WRLCK 3 /* exlusive lock, no wait */
+#define _SHM_WRLCK_WAIT 4 /* exclusive lock, wait */
+static int os2ShmSystemLock(
+ os2ShmNode *pNode, /* Apply locks to this open shared-memory segment */
+ int lockType, /* _SHM_UNLCK, _SHM_RDLCK, _SHM_WRLCK or _SHM_WRLCK_WAIT */
+ int ofst, /* Offset to first byte to be locked/unlocked */
+ int nByte /* Number of bytes to lock or unlock */
+){
+ APIRET rc;
+ FILELOCK area;
+ ULONG mode, timeout;
+
+ /* Access to the os2ShmNode object is serialized by the caller */
+ assert( sqlite3_mutex_held(pNode->mutex) || pNode->nRef==0 );
+
+ mode = 1; /* shared lock */
+ timeout = 0; /* no wait */
+ area.lOffset = ofst;
+ area.lRange = nByte;
+
+ switch( lockType ) {
+ case _SHM_WRLCK_WAIT:
+ timeout = (ULONG)-1; /* wait forever */
+ case _SHM_WRLCK:
+ mode = 0; /* exclusive lock */
+ case _SHM_RDLCK:
+ rc = DosSetFileLocks(pNode->hLockFile,
+ NULL, &area, timeout, mode);
+ break;
+ /* case _SHM_UNLCK: */
+ default:
+ rc = DosSetFileLocks(pNode->hLockFile,
+ &area, NULL, 0, 0);
+ break;
+ }
+
+ OSTRACE(("SHM-LOCK %d %s %s 0x%08lx\n",
+ pNode->hLockFile,
+ rc==SQLITE_OK ? "ok" : "failed",
+ lockType==_SHM_UNLCK ? "Unlock" : "Lock",
+ rc));
+
+ ERR_TRACE(rc, ("os2ShmSystemLock: %d %s\n", rc, pNode->shmBaseName))
+
+ return ( rc == 0 ) ? SQLITE_OK : SQLITE_BUSY;
+}
+
+/*
+** Find an os2ShmNode in global list or allocate a new one, if not found.
+**
+** This is not a VFS shared-memory method; it is a utility function called
+** by VFS shared-memory methods.
+*/
+static int os2OpenSharedMemory( os2File *fd, int szRegion ) {
+ os2ShmLink *pLink;
+ os2ShmNode *pNode;
+ int cbShmName, rc = SQLITE_OK;
+ char shmName[CCHMAXPATH + 30];
+#ifndef SQLITE_OS2_NO_WAL_LOCK_FILE
+ ULONG action;
+#endif
+
+ /* We need some additional space at the end to append the region number */
+ cbShmName = sprintf(shmName, "\\SHAREMEM\\%s", fd->zFullPathCp );
+ if( cbShmName >= CCHMAXPATH-8 )
+ return SQLITE_IOERR_SHMOPEN;
+
+ /* Replace colon in file name to form a valid shared memory name */
+ shmName[10+1] = '!';
+
+ /* Allocate link object (we free it later in case of failure) */
+ pLink = sqlite3_malloc( sizeof(*pLink) );
+ if( !pLink )
+ return SQLITE_NOMEM;
+
+ /* Access node list */
+ os2ShmEnterMutex();
+
+ /* Find node by it's shared memory base name */
+ for( pNode = os2ShmNodeList;
+ pNode && stricmp(shmName, pNode->shmBaseName) != 0;
+ pNode = pNode->pNext ) ;
+
+ /* Not found: allocate a new node */
+ if( !pNode ) {
+ pNode = sqlite3_malloc( sizeof(*pNode) + cbShmName );
+ if( pNode ) {
+ memset(pNode, 0, sizeof(*pNode) );
+ pNode->szRegion = szRegion;
+ pNode->hLockFile = (HFILE)-1;
+ strcpy(pNode->shmBaseName, shmName);
+
+#ifdef SQLITE_OS2_NO_WAL_LOCK_FILE
+ if( DosDupHandle(fd->h, &pNode->hLockFile) != 0 ) {
+#else
+ sprintf(shmName, "%s-lck", fd->zFullPathCp);
+ if( DosOpen((PSZ)shmName, &pNode->hLockFile, &action, 0, FILE_NORMAL,
+ OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW,
+ OPEN_ACCESS_READWRITE | OPEN_SHARE_DENYNONE |
+ OPEN_FLAGS_NOINHERIT | OPEN_FLAGS_FAIL_ON_ERROR,
+ NULL) != 0 ) {
+#endif
+ sqlite3_free(pNode);
+ rc = SQLITE_IOERR;
+ } else {
+ pNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST);
+ if( !pNode->mutex ) {
+ sqlite3_free(pNode);
+ rc = SQLITE_NOMEM;
+ }
+ }
+ } else {
+ rc = SQLITE_NOMEM;
+ }
+
+ if( rc == SQLITE_OK ) {
+ pNode->pNext = os2ShmNodeList;
+ os2ShmNodeList = pNode;
+ } else {
+ pNode = NULL;
+ }
+ } else if( pNode->szRegion != szRegion ) {
+ rc = SQLITE_IOERR_SHMSIZE;
+ pNode = NULL;
+ }
+
+ if( pNode ) {
+ sqlite3_mutex_enter(pNode->mutex);
+
+ memset(pLink, 0, sizeof(*pLink));
+
+ pLink->pShmNode = pNode;
+ pLink->pNext = pNode->pFirst;
+ pNode->pFirst = pLink;
+ pNode->nRef++;
+
+ fd->pShmLink = pLink;
+
+ sqlite3_mutex_leave(pNode->mutex);
+
+ } else {
+ /* Error occured. Free our link object. */
+ sqlite3_free(pLink);
+ }
+
+ os2ShmLeaveMutex();
+
+ ERR_TRACE(rc, ("os2OpenSharedMemory: %d %s\n", rc, fd->zFullPathCp))
+
+ return rc;
+}
+
+/*
+** Purge the os2ShmNodeList list of all entries with nRef==0.
+**
+** This is not a VFS shared-memory method; it is a utility function called
+** by VFS shared-memory methods.
+*/
+static void os2PurgeShmNodes( int deleteFlag ) {
+ os2ShmNode *pNode;
+ os2ShmNode **ppNode;
+
+ os2ShmEnterMutex();
+
+ ppNode = &os2ShmNodeList;
+
+ while( *ppNode ) {
+ pNode = *ppNode;
+
+ if( pNode->nRef == 0 ) {
+ *ppNode = pNode->pNext;
+
+ if( pNode->apRegion ) {
+ /* Prevent other processes from resizing the shared memory */
+ os2ShmSystemLock(pNode, _SHM_WRLCK_WAIT, OS2_SHM_DMS, 1);
+
+ while( pNode->nRegion-- ) {
+#ifdef SQLITE_DEBUG
+ int rc =
+#endif
+ DosFreeMem(pNode->apRegion[pNode->nRegion]);
+
+ OSTRACE(("SHM-PURGE pid-%d unmap region=%d %s\n",
+ (int)GetCurrentProcessId(), pNode->nRegion,
+ rc == 0 ? "ok" : "failed"));
+ }
+
+ /* Allow other processes to resize the shared memory */
+ os2ShmSystemLock(pNode, _SHM_UNLCK, OS2_SHM_DMS, 1);
+
+ sqlite3_free(pNode->apRegion);
+ }
+
+ DosClose(pNode->hLockFile);
+
+#ifndef SQLITE_OS2_NO_WAL_LOCK_FILE
+ if( deleteFlag ) {
+ char fileName[CCHMAXPATH];
+ /* Skip "\\SHAREMEM\\" */
+ sprintf(fileName, "%s-lck", pNode->shmBaseName + 10);
+ /* restore colon */
+ fileName[1] = ':';
+
+ DosForceDelete(fileName);
+ }
+#endif
+
+ sqlite3_mutex_free(pNode->mutex);
+
+ sqlite3_free(pNode);
+
+ } else {
+ ppNode = &pNode->pNext;
+ }
+ }
+
+ os2ShmLeaveMutex();
+}
+
+/*
+** This function is called to obtain a pointer to region iRegion of the
+** shared-memory associated with the database file id. Shared-memory regions
+** are numbered starting from zero. Each shared-memory region is szRegion
+** bytes in size.
+**
+** If an error occurs, an error code is returned and *pp is set to NULL.
+**
+** Otherwise, if the bExtend parameter is 0 and the requested shared-memory
+** region has not been allocated (by any client, including one running in a
+** separate process), then *pp is set to NULL and SQLITE_OK returned. If
+** bExtend is non-zero and the requested shared-memory region has not yet
+** been allocated, it is allocated by this function.
+**
+** If the shared-memory region has already been allocated or is allocated by
+** this call as described above, then it is mapped into this processes
+** address space (if it is not already), *pp is set to point to the mapped
+** memory and SQLITE_OK returned.
+*/
+static int os2ShmMap(
+ sqlite3_file *id, /* Handle open on database file */
+ int iRegion, /* Region to retrieve */
+ int szRegion, /* Size of regions */
+ int bExtend, /* True to extend block if necessary */
+ void volatile **pp /* OUT: Mapped memory */
+){
+ PVOID pvTemp;
+ void **apRegion;
+ os2ShmNode *pNode;
+ int n, rc = SQLITE_OK;
+ char shmName[CCHMAXPATH];
+ os2File *pFile = (os2File*)id;
+
+ *pp = NULL;
+
+ if( !pFile->pShmLink )
+ rc = os2OpenSharedMemory( pFile, szRegion );
+
+ if( rc == SQLITE_OK ) {
+ pNode = pFile->pShmLink->pShmNode ;
+
+ sqlite3_mutex_enter(pNode->mutex);
+
+ assert( szRegion==pNode->szRegion );
+
+ /* Unmapped region ? */
+ if( iRegion >= pNode->nRegion ) {
+ /* Prevent other processes from resizing the shared memory */
+ os2ShmSystemLock(pNode, _SHM_WRLCK_WAIT, OS2_SHM_DMS, 1);
+
+ apRegion = sqlite3_realloc(
+ pNode->apRegion, (iRegion + 1) * sizeof(apRegion[0]));
+
+ if( apRegion ) {
+ pNode->apRegion = apRegion;
+
+ while( pNode->nRegion <= iRegion ) {
+ sprintf(shmName, "%s-%u",
+ pNode->shmBaseName, pNode->nRegion);
+
+ if( DosGetNamedSharedMem(&pvTemp, (PSZ)shmName,
+ PAG_READ | PAG_WRITE) != NO_ERROR ) {
+ if( !bExtend )
+ break;
+
+ if( DosAllocSharedMem(&pvTemp, (PSZ)shmName, szRegion,
+ PAG_READ | PAG_WRITE | PAG_COMMIT | OBJ_ANY) != NO_ERROR &&
+ DosAllocSharedMem(&pvTemp, (PSZ)shmName, szRegion,
+ PAG_READ | PAG_WRITE | PAG_COMMIT) != NO_ERROR ) {
+ rc = SQLITE_NOMEM;
+ break;
+ }
+ }
+
+ apRegion[pNode->nRegion++] = pvTemp;
+ }
+
+ /* zero out remaining entries */
+ for( n = pNode->nRegion; n <= iRegion; n++ )
+ pNode->apRegion[n] = NULL;
+
+ /* Return this region (maybe zero) */
+ *pp = pNode->apRegion[iRegion];
+ } else {
+ rc = SQLITE_NOMEM;
+ }
+
+ /* Allow other processes to resize the shared memory */
+ os2ShmSystemLock(pNode, _SHM_UNLCK, OS2_SHM_DMS, 1);
+
+ } else {
+ /* Region has been mapped previously */
+ *pp = pNode->apRegion[iRegion];
+ }
+
+ sqlite3_mutex_leave(pNode->mutex);
+ }
+
+ ERR_TRACE(rc, ("os2ShmMap: %s iRgn = %d, szRgn = %d, bExt = %d : %d\n",
+ pFile->zFullPathCp, iRegion, szRegion, bExtend, rc))
+
+ return rc;
+}
+
+/*
+** Close a connection to shared-memory. Delete the underlying
+** storage if deleteFlag is true.
+**
+** If there is no shared memory associated with the connection then this
+** routine is a harmless no-op.
+*/
+static int os2ShmUnmap(
+ sqlite3_file *id, /* The underlying database file */
+ int deleteFlag /* Delete shared-memory if true */
+){
+ os2File *pFile = (os2File*)id;
+ os2ShmLink *pLink = pFile->pShmLink;
+
+ if( pLink ) {
+ int nRef = -1;
+ os2ShmLink **ppLink;
+ os2ShmNode *pNode = pLink->pShmNode;
+
+ sqlite3_mutex_enter(pNode->mutex);
+
+ for( ppLink = &pNode->pFirst;
+ *ppLink && *ppLink != pLink;
+ ppLink = &(*ppLink)->pNext ) ;
+
+ assert(*ppLink);
+
+ if( *ppLink ) {
+ *ppLink = pLink->pNext;
+ nRef = --pNode->nRef;
+ } else {
+ ERR_TRACE(1, ("os2ShmUnmap: link not found ! %s\n",
+ pNode->shmBaseName))
+ }
+
+ pFile->pShmLink = NULL;
+ sqlite3_free(pLink);
+
+ sqlite3_mutex_leave(pNode->mutex);
+
+ if( nRef == 0 )
+ os2PurgeShmNodes( deleteFlag );
+ }
+
+ return SQLITE_OK;
+}
+
+/*
+** Change the lock state for a shared-memory segment.
+**
+** Note that the relationship between SHAREd and EXCLUSIVE locks is a little
+** different here than in posix. In xShmLock(), one can go from unlocked
+** to shared and back or from unlocked to exclusive and back. But one may
+** not go from shared to exclusive or from exclusive to shared.
+*/
+static int os2ShmLock(
+ sqlite3_file *id, /* Database file holding the shared memory */
+ int ofst, /* First lock to acquire or release */
+ int n, /* Number of locks to acquire or release */
+ int flags /* What to do with the lock */
+){
+ u32 mask; /* Mask of locks to take or release */
+ int rc = SQLITE_OK; /* Result code */
+ os2File *pFile = (os2File*)id;
+ os2ShmLink *p = pFile->pShmLink; /* The shared memory being locked */
+ os2ShmLink *pX; /* For looping over all siblings */
+ os2ShmNode *pShmNode = p->pShmNode; /* Our node */
+
+ assert( ofst>=0 && ofst+n<=SQLITE_SHM_NLOCK );
+ assert( n>=1 );
+ assert( flags==(SQLITE_SHM_LOCK | SQLITE_SHM_SHARED)
+ || flags==(SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE)
+ || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED)
+ || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE) );
+ assert( n==1 || (flags & SQLITE_SHM_EXCLUSIVE)!=0 );
+
+ mask = (u32)((1U<<(ofst+n)) - (1U<<ofst));
+ assert( n>1 || mask==(1<<ofst) );
+
+
+ sqlite3_mutex_enter(pShmNode->mutex);
+
+ if( flags & SQLITE_SHM_UNLOCK ){
+ u32 allMask = 0; /* Mask of locks held by siblings */
+
+ /* See if any siblings hold this same lock */
+ for(pX=pShmNode->pFirst; pX; pX=pX->pNext){
+ if( pX==p ) continue;
+ assert( (pX->exclMask & (p->exclMask|p->sharedMask))==0 );
+ allMask |= pX->sharedMask;
+ }
+
+ /* Unlock the system-level locks */
+ if( (mask & allMask)==0 ){
+ rc = os2ShmSystemLock(pShmNode, _SHM_UNLCK, ofst+OS2_SHM_BASE, n);
+ }else{
+ rc = SQLITE_OK;
+ }
+
+ /* Undo the local locks */
+ if( rc==SQLITE_OK ){
+ p->exclMask &= ~mask;
+ p->sharedMask &= ~mask;
+ }
+ }else if( flags & SQLITE_SHM_SHARED ){
+ u32 allShared = 0; /* Union of locks held by connections other than "p" */
+
+ /* Find out which shared locks are already held by sibling connections.
+ ** If any sibling already holds an exclusive lock, go ahead and return
+ ** SQLITE_BUSY.
+ */
+ for(pX=pShmNode->pFirst; pX; pX=pX->pNext){
+ if( (pX->exclMask & mask)!=0 ){
+ rc = SQLITE_BUSY;
+ break;
+ }
+ allShared |= pX->sharedMask;
+ }
+
+ /* Get shared locks at the system level, if necessary */
+ if( rc==SQLITE_OK ){
+ if( (allShared & mask)==0 ){
+ rc = os2ShmSystemLock(pShmNode, _SHM_RDLCK, ofst+OS2_SHM_BASE, n);
+ }else{
+ rc = SQLITE_OK;
+ }
+ }
+
+ /* Get the local shared locks */
+ if( rc==SQLITE_OK ){
+ p->sharedMask |= mask;
+ }
+ }else{
+ /* Make sure no sibling connections hold locks that will block this
+ ** lock. If any do, return SQLITE_BUSY right away.
+ */
+ for(pX=pShmNode->pFirst; pX; pX=pX->pNext){
+ if( (pX->exclMask & mask)!=0 || (pX->sharedMask & mask)!=0 ){
+ rc = SQLITE_BUSY;
+ break;
+ }
+ }
+
+ /* Get the exclusive locks at the system level. Then if successful
+ ** also mark the local connection as being locked.
+ */
+ if( rc==SQLITE_OK ){
+ rc = os2ShmSystemLock(pShmNode, _SHM_WRLCK, ofst+OS2_SHM_BASE, n);
+ if( rc==SQLITE_OK ){
+ assert( (p->sharedMask & mask)==0 );
+ p->exclMask |= mask;
+ }
+ }
+ }
+
+ sqlite3_mutex_leave(pShmNode->mutex);
+
+ OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x %s\n",
+ p->id, (int)GetCurrentProcessId(), p->sharedMask, p->exclMask,
+ rc ? "failed" : "ok"));
+
+ ERR_TRACE(rc, ("os2ShmLock: ofst = %d, n = %d, flags = 0x%x -> %d \n",
+ ofst, n, flags, rc))
+
+ return rc;
+}
+
+/*
+** Implement a memory barrier or memory fence on shared memory.
+**
+** All loads and stores begun before the barrier must complete before
+** any load or store begun after the barrier.
+*/
+static void os2ShmBarrier(
+ sqlite3_file *id /* Database file holding the shared memory */
+){
+ UNUSED_PARAMETER(id);
+ os2ShmEnterMutex();
+ os2ShmLeaveMutex();
+}
+
+#else
+# define os2ShmMap 0
+# define os2ShmLock 0
+# define os2ShmBarrier 0
+# define os2ShmUnmap 0
+#endif /* #ifndef SQLITE_OMIT_WAL */
+
+
/*
** This vector defines all the methods that can operate on an
** sqlite3_file for os2.
*/
static const sqlite3_io_methods os2IoMethod = {
- 1, /* iVersion */
- os2Close,
- os2Read,
- os2Write,
- os2Truncate,
- os2Sync,
- os2FileSize,
- os2Lock,
- os2Unlock,
- os2CheckReservedLock,
- os2FileControl,
- os2SectorSize,
- os2DeviceCharacteristics
+ 2, /* iVersion */
+ os2Close, /* xClose */
+ os2Read, /* xRead */
+ os2Write, /* xWrite */
+ os2Truncate, /* xTruncate */
+ os2Sync, /* xSync */
+ os2FileSize, /* xFileSize */
+ os2Lock, /* xLock */
+ os2Unlock, /* xUnlock */
+ os2CheckReservedLock, /* xCheckReservedLock */
+ os2FileControl, /* xFileControl */
+ os2SectorSize, /* xSectorSize */
+ os2DeviceCharacteristics, /* xDeviceCharacteristics */
+ os2ShmMap, /* xShmMap */
+ os2ShmLock, /* xShmLock */
+ os2ShmBarrier, /* xShmBarrier */
+ os2ShmUnmap /* xShmUnmap */
};
+
/***************************************************************************
** Here ends the I/O methods that form the sqlite3_io_methods object.
**
@@ -22328,50 +24181,57 @@
** hold at pVfs->mxPathname characters.
*/
static int getTempname(int nBuf, char *zBuf ){
- static const unsigned char zChars[] =
+ static const char zChars[] =
"abcdefghijklmnopqrstuvwxyz"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"0123456789";
int i, j;
- char zTempPathBuf[3];
- PSZ zTempPath = (PSZ)&zTempPathBuf;
- if( sqlite3_temp_directory ){
- zTempPath = sqlite3_temp_directory;
- }else{
- if( DosScanEnv( (PSZ)"TEMP", &zTempPath ) ){
- if( DosScanEnv( (PSZ)"TMP", &zTempPath ) ){
- if( DosScanEnv( (PSZ)"TMPDIR", &zTempPath ) ){
- ULONG ulDriveNum = 0, ulDriveMap = 0;
- DosQueryCurrentDisk( &ulDriveNum, &ulDriveMap );
- sprintf( (char*)zTempPath, "%c:", (char)( 'A' + ulDriveNum - 1 ) );
- }
- }
- }
+ PSZ zTempPathCp;
+ char zTempPath[CCHMAXPATH];
+ ULONG ulDriveNum, ulDriveMap;
+
+ /* It's odd to simulate an io-error here, but really this is just
+ ** using the io-error infrastructure to test that SQLite handles this
+ ** function failing.
+ */
+ SimulateIOError( return SQLITE_IOERR );
+
+ if( sqlite3_temp_directory ) {
+ sqlite3_snprintf(CCHMAXPATH-30, zTempPath, "%s", sqlite3_temp_directory);
+ } else if( DosScanEnv( (PSZ)"TEMP", &zTempPathCp ) == NO_ERROR ||
+ DosScanEnv( (PSZ)"TMP", &zTempPathCp ) == NO_ERROR ||
+ DosScanEnv( (PSZ)"TMPDIR", &zTempPathCp ) == NO_ERROR ) {
+ char *zTempPathUTF = convertCpPathToUtf8( (char *)zTempPathCp );
+ sqlite3_snprintf(CCHMAXPATH-30, zTempPath, "%s", zTempPathUTF);
+ free( zTempPathUTF );
+ } else if( DosQueryCurrentDisk( &ulDriveNum, &ulDriveMap ) == NO_ERROR ) {
+ zTempPath[0] = (char)('A' + ulDriveNum - 1);
+ zTempPath[1] = ':';
+ zTempPath[2] = '\0';
+ } else {
+ zTempPath[0] = '\0';
}
+
/* Strip off a trailing slashes or backslashes, otherwise we would get *
* multiple (back)slashes which causes DosOpen() to fail. *
* Trailing spaces are not allowed, either. */
j = sqlite3Strlen30(zTempPath);
- while( j > 0 && ( zTempPath[j-1] == '\\' || zTempPath[j-1] == '/'
- || zTempPath[j-1] == ' ' ) ){
+ while( j > 0 && ( zTempPath[j-1] == '\\' || zTempPath[j-1] == '/' ||
+ zTempPath[j-1] == ' ' ) ){
j--;
}
zTempPath[j] = '\0';
- if( !sqlite3_temp_directory ){
- char *zTempPathUTF = convertCpPathToUtf8( zTempPath );
- sqlite3_snprintf( nBuf-30, zBuf,
- "%s\\"SQLITE_TEMP_FILE_PREFIX, zTempPathUTF );
- free( zTempPathUTF );
- }else{
- sqlite3_snprintf( nBuf-30, zBuf,
- "%s\\"SQLITE_TEMP_FILE_PREFIX, zTempPath );
- }
- j = sqlite3Strlen30( zBuf );
+
+ /* We use 20 bytes to randomize the name */
+ sqlite3_snprintf(nBuf-22, zBuf,
+ "%s\\"SQLITE_TEMP_FILE_PREFIX, zTempPath);
+ j = sqlite3Strlen30(zBuf);
sqlite3_randomness( 20, &zBuf[j] );
for( i = 0; i < 20; i++, j++ ){
- zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
+ zBuf[j] = zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
}
zBuf[j] = 0;
+
OSTRACE(( "TEMP FILENAME: %s\n", zBuf ));
return SQLITE_OK;
}
@@ -22391,8 +24251,8 @@
char *zRelativeCp = convertUtf8PathToCp( zRelative );
char zFullCp[CCHMAXPATH] = "\0";
char *zFullUTF;
- APIRET rc = DosQueryPathInfo( zRelativeCp, FIL_QUERYFULLNAME, zFullCp,
- CCHMAXPATH );
+ APIRET rc = DosQueryPathInfo( (PSZ)zRelativeCp, FIL_QUERYFULLNAME,
+ zFullCp, CCHMAXPATH );
free( zRelativeCp );
zFullUTF = convertCpPathToUtf8( zFullCp );
sqlite3_snprintf( nFull, zFull, zFullUTF );
@@ -22406,100 +24266,127 @@
*/
static int os2Open(
sqlite3_vfs *pVfs, /* Not used */
- const char *zName, /* Name of the file */
+ const char *zName, /* Name of the file (UTF-8) */
sqlite3_file *id, /* Write the SQLite file handle here */
int flags, /* Open mode flags */
int *pOutFlags /* Status return flags */
){
HFILE h;
- ULONG ulFileAttribute = FILE_NORMAL;
ULONG ulOpenFlags = 0;
ULONG ulOpenMode = 0;
+ ULONG ulAction = 0;
+ ULONG rc;
os2File *pFile = (os2File*)id;
- APIRET rc = NO_ERROR;
- ULONG ulAction;
+ const char *zUtf8Name = zName;
char *zNameCp;
- char zTmpname[CCHMAXPATH+1]; /* Buffer to hold name of temp file */
+ char zTmpname[CCHMAXPATH];
+
+ int isExclusive = (flags & SQLITE_OPEN_EXCLUSIVE);
+ int isCreate = (flags & SQLITE_OPEN_CREATE);
+ int isReadWrite = (flags & SQLITE_OPEN_READWRITE);
+#ifndef NDEBUG
+ int isDelete = (flags & SQLITE_OPEN_DELETEONCLOSE);
+ int isReadonly = (flags & SQLITE_OPEN_READONLY);
+ int eType = (flags & 0xFFFFFF00);
+ int isOpenJournal = (isCreate && (
+ eType==SQLITE_OPEN_MASTER_JOURNAL
+ || eType==SQLITE_OPEN_MAIN_JOURNAL
+ || eType==SQLITE_OPEN_WAL
+ ));
+#endif
+
+ UNUSED_PARAMETER(pVfs);
+ assert( id!=0 );
+
+ /* Check the following statements are true:
+ **
+ ** (a) Exactly one of the READWRITE and READONLY flags must be set, and
+ ** (b) if CREATE is set, then READWRITE must also be set, and
+ ** (c) if EXCLUSIVE is set, then CREATE must also be set.
+ ** (d) if DELETEONCLOSE is set, then CREATE must also be set.
+ */
+ assert((isReadonly==0 || isReadWrite==0) && (isReadWrite || isReadonly));
+ assert(isCreate==0 || isReadWrite);
+ assert(isExclusive==0 || isCreate);
+ assert(isDelete==0 || isCreate);
+
+ /* The main DB, main journal, WAL file and master journal are never
+ ** automatically deleted. Nor are they ever temporary files. */
+ assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB );
+ assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL );
+ assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MASTER_JOURNAL );
+ assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL );
+
+ /* Assert that the upper layer has set one of the "file-type" flags. */
+ assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB
+ || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL
+ || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_MASTER_JOURNAL
+ || eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL
+ );
+
+ memset( pFile, 0, sizeof(*pFile) );
+ pFile->h = (HFILE)-1;
/* If the second argument to this function is NULL, generate a
** temporary file name to use
*/
- if( !zName ){
- int rc = getTempname(CCHMAXPATH+1, zTmpname);
+ if( !zUtf8Name ){
+ assert(isDelete && !isOpenJournal);
+ rc = getTempname(CCHMAXPATH, zTmpname);
if( rc!=SQLITE_OK ){
return rc;
}
- zName = zTmpname;
+ zUtf8Name = zTmpname;
}
-
- memset( pFile, 0, sizeof(*pFile) );
-
- OSTRACE(( "OPEN want %d\n", flags ));
-
- if( flags & SQLITE_OPEN_READWRITE ){
+ if( isReadWrite ){
ulOpenMode |= OPEN_ACCESS_READWRITE;
- OSTRACE(( "OPEN read/write\n" ));
}else{
ulOpenMode |= OPEN_ACCESS_READONLY;
- OSTRACE(( "OPEN read only\n" ));
}
- if( flags & SQLITE_OPEN_CREATE ){
- ulOpenFlags |= OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW;
- OSTRACE(( "OPEN open new/create\n" ));
+ /* Open in random access mode for possibly better speed. Allow full
+ ** sharing because file locks will provide exclusive access when needed.
+ ** The handle should not be inherited by child processes and we don't
+ ** want popups from the critical error handler.
+ */
+ ulOpenMode |= OPEN_FLAGS_RANDOM | OPEN_SHARE_DENYNONE |
+ OPEN_FLAGS_NOINHERIT | OPEN_FLAGS_FAIL_ON_ERROR;
+
+ /* SQLITE_OPEN_EXCLUSIVE is used to make sure that a new file is
+ ** created. SQLite doesn't use it to indicate "exclusive access"
+ ** as it is usually understood.
+ */
+ if( isExclusive ){
+ /* Creates a new file, only if it does not already exist. */
+ /* If the file exists, it fails. */
+ ulOpenFlags |= OPEN_ACTION_CREATE_IF_NEW | OPEN_ACTION_FAIL_IF_EXISTS;
+ }else if( isCreate ){
+ /* Open existing file, or create if it doesn't exist */
+ ulOpenFlags |= OPEN_ACTION_CREATE_IF_NEW | OPEN_ACTION_OPEN_IF_EXISTS;
}else{
- ulOpenFlags |= OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW;
- OSTRACE(( "OPEN open existing\n" ));
+ /* Opens a file, only if it exists. */
+ ulOpenFlags |= OPEN_ACTION_FAIL_IF_NEW | OPEN_ACTION_OPEN_IF_EXISTS;
}
- if( flags & SQLITE_OPEN_MAIN_DB ){
- ulOpenMode |= OPEN_SHARE_DENYNONE;
- OSTRACE(( "OPEN share read/write\n" ));
- }else{
- ulOpenMode |= OPEN_SHARE_DENYWRITE;
- OSTRACE(( "OPEN share read only\n" ));
- }
-
- if( flags & SQLITE_OPEN_DELETEONCLOSE ){
- char pathUtf8[CCHMAXPATH];
-#ifdef NDEBUG /* when debugging we want to make sure it is deleted */
- ulFileAttribute = FILE_HIDDEN;
-#endif
- os2FullPathname( pVfs, zName, CCHMAXPATH, pathUtf8 );
- pFile->pathToDel = convertUtf8PathToCp( pathUtf8 );
- OSTRACE(( "OPEN hidden/delete on close file attributes\n" ));
- }else{
- pFile->pathToDel = NULL;
- OSTRACE(( "OPEN normal file attribute\n" ));
- }
-
- /* always open in random access mode for possibly better speed */
- ulOpenMode |= OPEN_FLAGS_RANDOM;
- ulOpenMode |= OPEN_FLAGS_FAIL_ON_ERROR;
- ulOpenMode |= OPEN_FLAGS_NOINHERIT;
-
- zNameCp = convertUtf8PathToCp( zName );
+ zNameCp = convertUtf8PathToCp( zUtf8Name );
rc = DosOpen( (PSZ)zNameCp,
&h,
&ulAction,
0L,
- ulFileAttribute,
+ FILE_NORMAL,
ulOpenFlags,
ulOpenMode,
(PEAOP2)NULL );
free( zNameCp );
+
if( rc != NO_ERROR ){
- OSTRACE(( "OPEN Invalid handle rc=%d: zName=%s, ulAction=%#lx, ulAttr=%#lx, ulFlags=%#lx, ulMode=%#lx\n",
- rc, zName, ulAction, ulFileAttribute, ulOpenFlags, ulOpenMode ));
- if( pFile->pathToDel )
- free( pFile->pathToDel );
- pFile->pathToDel = NULL;
- if( flags & SQLITE_OPEN_READWRITE ){
- OSTRACE(( "OPEN %d Invalid handle\n",
- ((flags | SQLITE_OPEN_READONLY) & ~SQLITE_OPEN_READWRITE) ));
+ OSTRACE(( "OPEN Invalid handle rc=%d: zName=%s, ulAction=%#lx, ulFlags=%#lx, ulMode=%#lx\n",
+ rc, zUtf8Name, ulAction, ulOpenFlags, ulOpenMode ));
+
+ if( isReadWrite ){
return os2Open( pVfs, zName, id,
- ((flags | SQLITE_OPEN_READONLY) & ~SQLITE_OPEN_READWRITE),
+ ((flags|SQLITE_OPEN_READONLY)&~(SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE)),
pOutFlags );
}else{
return SQLITE_CANTOPEN;
@@ -22507,11 +24394,15 @@
}
if( pOutFlags ){
- *pOutFlags = flags & SQLITE_OPEN_READWRITE ? SQLITE_OPEN_READWRITE : SQLITE_OPEN_READONLY;
+ *pOutFlags = isReadWrite ? SQLITE_OPEN_READWRITE : SQLITE_OPEN_READONLY;
}
+ os2FullPathname( pVfs, zUtf8Name, sizeof( zTmpname ), zTmpname );
+ pFile->zFullPathCp = convertUtf8PathToCp( zTmpname );
pFile->pMethod = &os2IoMethod;
+ pFile->flags = flags;
pFile->h = h;
+
OpenCounter(+1);
OSTRACE(( "OPEN %d pOutFlags=%d\n", pFile->h, pOutFlags ));
return SQLITE_OK;
@@ -22525,13 +24416,16 @@
const char *zFilename, /* Name of file to delete */
int syncDir /* Not used on os2 */
){
- APIRET rc = NO_ERROR;
- char *zFilenameCp = convertUtf8PathToCp( zFilename );
+ APIRET rc;
+ char *zFilenameCp;
SimulateIOError( return SQLITE_IOERR_DELETE );
+ zFilenameCp = convertUtf8PathToCp( zFilename );
rc = DosDelete( (PSZ)zFilenameCp );
free( zFilenameCp );
OSTRACE(( "DELETE \"%s\"\n", zFilename ));
- return rc == NO_ERROR ? SQLITE_OK : SQLITE_IOERR_DELETE;
+ return (rc == NO_ERROR ||
+ rc == ERROR_FILE_NOT_FOUND ||
+ rc == ERROR_PATH_NOT_FOUND ) ? SQLITE_OK : SQLITE_IOERR_DELETE;
}
/*
@@ -22543,30 +24437,42 @@
int flags, /* Type of test to make on this file */
int *pOut /* Write results here */
){
+ APIRET rc;
FILESTATUS3 fsts3ConfigInfo;
- APIRET rc = NO_ERROR;
- char *zFilenameCp = convertUtf8PathToCp( zFilename );
+ char *zFilenameCp;
- memset( &fsts3ConfigInfo, 0, sizeof(fsts3ConfigInfo) );
+ UNUSED_PARAMETER(pVfs);
+ SimulateIOError( return SQLITE_IOERR_ACCESS; );
+
+ zFilenameCp = convertUtf8PathToCp( zFilename );
rc = DosQueryPathInfo( (PSZ)zFilenameCp, FIL_STANDARD,
&fsts3ConfigInfo, sizeof(FILESTATUS3) );
free( zFilenameCp );
OSTRACE(( "ACCESS fsts3ConfigInfo.attrFile=%d flags=%d rc=%d\n",
fsts3ConfigInfo.attrFile, flags, rc ));
+
switch( flags ){
- case SQLITE_ACCESS_READ:
case SQLITE_ACCESS_EXISTS:
- rc = (rc == NO_ERROR);
- OSTRACE(( "ACCESS %s access of read and exists rc=%d\n", zFilename, rc));
+ /* For an SQLITE_ACCESS_EXISTS query, treat a zero-length file
+ ** as if it does not exist.
+ */
+ if( fsts3ConfigInfo.cbFile == 0 )
+ rc = ERROR_FILE_NOT_FOUND;
+ break;
+ case SQLITE_ACCESS_READ:
break;
case SQLITE_ACCESS_READWRITE:
- rc = (rc == NO_ERROR) && ( (fsts3ConfigInfo.attrFile & FILE_READONLY) == 0 );
- OSTRACE(( "ACCESS %s access of read/write rc=%d\n", zFilename, rc ));
+ if( fsts3ConfigInfo.attrFile & FILE_READONLY )
+ rc = ERROR_ACCESS_DENIED;
break;
default:
+ rc = ERROR_FILE_NOT_FOUND;
assert( !"Invalid flags argument" );
}
- *pOut = rc;
+
+ *pOut = (rc == NO_ERROR);
+ OSTRACE(( "ACCESS %s flags %d: rc=%d\n", zFilename, flags, *pOut ));
+
return SQLITE_OK;
}
@@ -22581,11 +24487,10 @@
** within the shared library, and closing the shared library.
*/
static void *os2DlOpen(sqlite3_vfs *pVfs, const char *zFilename){
- UCHAR loadErr[256];
HMODULE hmod;
APIRET rc;
char *zFilenameCp = convertUtf8PathToCp(zFilename);
- rc = DosLoadModule((PSZ)loadErr, sizeof(loadErr), zFilenameCp, &hmod);
+ rc = DosLoadModule(NULL, 0, (PSZ)zFilenameCp, &hmod);
free(zFilenameCp);
return rc != NO_ERROR ? 0 : (void*)hmod;
}
@@ -22596,19 +24501,19 @@
static void os2DlError(sqlite3_vfs *pVfs, int nBuf, char *zBufOut){
/* no-op */
}
-static void *os2DlSym(sqlite3_vfs *pVfs, void *pHandle, const char *zSymbol){
+static void (*os2DlSym(sqlite3_vfs *pVfs, void *pHandle, const char *zSymbol))(void){
PFN pfn;
APIRET rc;
- rc = DosQueryProcAddr((HMODULE)pHandle, 0L, zSymbol, &pfn);
+ rc = DosQueryProcAddr((HMODULE)pHandle, 0L, (PSZ)zSymbol, &pfn);
if( rc != NO_ERROR ){
/* if the symbol itself was not found, search again for the same
* symbol with an extra underscore, that might be needed depending
* on the calling convention */
char _zSymbol[256] = "_";
- strncat(_zSymbol, zSymbol, 255);
- rc = DosQueryProcAddr((HMODULE)pHandle, 0L, _zSymbol, &pfn);
+ strncat(_zSymbol, zSymbol, 254);
+ rc = DosQueryProcAddr((HMODULE)pHandle, 0L, (PSZ)_zSymbol, &pfn);
}
- return rc != NO_ERROR ? 0 : (void*)pfn;
+ return rc != NO_ERROR ? 0 : (void(*)(void))pfn;
}
static void os2DlClose(sqlite3_vfs *pVfs, void *pHandle){
DosFreeModule((HMODULE)pHandle);
@@ -22630,54 +24535,39 @@
n = nBuf;
memset(zBuf, 0, nBuf);
#else
- int sizeofULong = sizeof(ULONG);
- if( (int)sizeof(DATETIME) <= nBuf - n ){
- DATETIME x;
- DosGetDateTime(&x);
- memcpy(&zBuf[n], &x, sizeof(x));
- n += sizeof(x);
+ int i;
+ PPIB ppib;
+ PTIB ptib;
+ DATETIME dt;
+ static unsigned c = 0;
+ /* Ordered by variation probability */
+ static ULONG svIdx[6] = { QSV_MS_COUNT, QSV_TIME_LOW,
+ QSV_MAXPRMEM, QSV_MAXSHMEM,
+ QSV_TOTAVAILMEM, QSV_TOTRESMEM };
+
+ /* 8 bytes; timezone and weekday don't increase the randomness much */
+ if( (int)sizeof(dt)-3 <= nBuf - n ){
+ c += 0x0100;
+ DosGetDateTime(&dt);
+ dt.year = (USHORT)((dt.year - 1900) | c);
+ memcpy(&zBuf[n], &dt, sizeof(dt)-3);
+ n += sizeof(dt)-3;
}
- if( sizeofULong <= nBuf - n ){
- PPIB ppib;
- DosGetInfoBlocks(NULL, &ppib);
- memcpy(&zBuf[n], &ppib->pib_ulpid, sizeofULong);
- n += sizeofULong;
+ /* 4 bytes; PIDs and TIDs are 16 bit internally, so combine them */
+ if( (int)sizeof(ULONG) <= nBuf - n ){
+ DosGetInfoBlocks(&ptib, &ppib);
+ *(PULONG)&zBuf[n] = MAKELONG(ppib->pib_ulpid,
+ ptib->tib_ptib2->tib2_ultid);
+ n += sizeof(ULONG);
}
- if( sizeofULong <= nBuf - n ){
- PTIB ptib;
- DosGetInfoBlocks(&ptib, NULL);
- memcpy(&zBuf[n], &ptib->tib_ptib2->tib2_ultid, sizeofULong);
- n += sizeofULong;
- }
-
- /* if we still haven't filled the buffer yet the following will */
- /* grab everything once instead of making several calls for a single item */
- if( sizeofULong <= nBuf - n ){
- ULONG ulSysInfo[QSV_MAX];
- DosQuerySysInfo(1L, QSV_MAX, ulSysInfo, sizeofULong * QSV_MAX);
-
- memcpy(&zBuf[n], &ulSysInfo[QSV_MS_COUNT - 1], sizeofULong);
- n += sizeofULong;
-
- if( sizeofULong <= nBuf - n ){
- memcpy(&zBuf[n], &ulSysInfo[QSV_TIMER_INTERVAL - 1], sizeofULong);
- n += sizeofULong;
- }
- if( sizeofULong <= nBuf - n ){
- memcpy(&zBuf[n], &ulSysInfo[QSV_TIME_LOW - 1], sizeofULong);
- n += sizeofULong;
- }
- if( sizeofULong <= nBuf - n ){
- memcpy(&zBuf[n], &ulSysInfo[QSV_TIME_HIGH - 1], sizeofULong);
- n += sizeofULong;
- }
- if( sizeofULong <= nBuf - n ){
- memcpy(&zBuf[n], &ulSysInfo[QSV_TOTAVAILMEM - 1], sizeofULong);
- n += sizeofULong;
- }
- }
+ /* Up to 6 * 4 bytes; variables depend on the system state */
+ for( i = 0; i < 6 && (int)sizeof(ULONG) <= nBuf - n; i++ ){
+ DosQuerySysInfo(svIdx[i], svIdx[i],
+ (PULONG)&zBuf[n], sizeof(ULONG));
+ n += sizeof(ULONG);
+ }
#endif
return n;
@@ -22705,46 +24595,98 @@
#endif
/*
-** Find the current time (in Universal Coordinated Time). Write the
-** current time and date as a Julian Day number into *prNow and
-** return 0. Return 1 if the time and date cannot be found.
+** Find the current time (in Universal Coordinated Time). Write into *piNow
+** the current time and date as a Julian Day number times 86_400_000. In
+** other words, write into *piNow the number of milliseconds since the Julian
+** epoch of noon in Greenwich on November 24, 4714 B.C according to the
+** proleptic Gregorian calendar.
+**
+** On success, return 0. Return 1 if the time and date cannot be found.
*/
-int os2CurrentTime( sqlite3_vfs *pVfs, double *prNow ){
- double now;
- SHORT minute; /* needs to be able to cope with negative timezone offset */
- USHORT second, hour,
- day, month, year;
+static int os2CurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *piNow){
+#ifdef SQLITE_TEST
+ static const sqlite3_int64 unixEpoch = 24405875*(sqlite3_int64)8640000;
+#endif
+ int year, month, datepart, timepart;
+
DATETIME dt;
DosGetDateTime( &dt );
- second = (USHORT)dt.seconds;
- minute = (SHORT)dt.minutes + dt.timezone;
- hour = (USHORT)dt.hours;
- day = (USHORT)dt.day;
- month = (USHORT)dt.month;
- year = (USHORT)dt.year;
+
+ year = dt.year;
+ month = dt.month;
/* Calculations from http://www.astro.keele.ac.uk/~rno/Astronomy/hjd.html
- http://www.astro.keele.ac.uk/~rno/Astronomy/hjd-0.1.c */
- /* Calculate the Julian days */
- now = day - 32076 +
+ ** http://www.astro.keele.ac.uk/~rno/Astronomy/hjd-0.1.c
+ ** Calculate the Julian days
+ */
+ datepart = (int)dt.day - 32076 +
1461*(year + 4800 + (month - 14)/12)/4 +
367*(month - 2 - (month - 14)/12*12)/12 -
3*((year + 4900 + (month - 14)/12)/100)/4;
- /* Add the fractional hours, mins and seconds */
- now += (hour + 12.0)/24.0;
- now += minute/1440.0;
- now += second/86400.0;
- *prNow = now;
+ /* Time in milliseconds, hours to noon added */
+ timepart = 12*3600*1000 + dt.hundredths*10 + dt.seconds*1000 +
+ ((int)dt.minutes + dt.timezone)*60*1000 + dt.hours*3600*1000;
+
+ *piNow = (sqlite3_int64)datepart*86400*1000 + timepart;
+
#ifdef SQLITE_TEST
if( sqlite3_current_time ){
- *prNow = sqlite3_current_time/86400.0 + 2440587.5;
+ *piNow = 1000*(sqlite3_int64)sqlite3_current_time + unixEpoch;
}
#endif
+
+ UNUSED_PARAMETER(pVfs);
return 0;
}
+/*
+** Find the current time (in Universal Coordinated Time). Write the
+** current time and date as a Julian Day number into *prNow and
+** return 0. Return 1 if the time and date cannot be found.
+*/
+static int os2CurrentTime( sqlite3_vfs *pVfs, double *prNow ){
+ int rc;
+ sqlite3_int64 i;
+ rc = os2CurrentTimeInt64(pVfs, &i);
+ if( !rc ){
+ *prNow = i/86400000.0;
+ }
+ return rc;
+}
+
+/*
+** The idea is that this function works like a combination of
+** GetLastError() and FormatMessage() on windows (or errno and
+** strerror_r() on unix). After an error is returned by an OS
+** function, SQLite calls this function with zBuf pointing to
+** a buffer of nBuf bytes. The OS layer should populate the
+** buffer with a nul-terminated UTF-8 encoded error message
+** describing the last IO error to have occurred within the calling
+** thread.
+**
+** If the error message is too large for the supplied buffer,
+** it should be truncated. The return value of xGetLastError
+** is zero if the error message fits in the buffer, or non-zero
+** otherwise (if the message was truncated). If non-zero is returned,
+** then it is not necessary to include the nul-terminator character
+** in the output buffer.
+**
+** Not supplying an error message will have no adverse effect
+** on SQLite. It is fine to have an implementation that never
+** returns an error message:
+**
+** int xGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
+** assert(zBuf[0]=='\0');
+** return 0;
+** }
+**
+** However if an error message is supplied, it will be incorporated
+** by sqlite into the error message available to the user using
+** sqlite3_errmsg(), possibly making IO errors easier to debug.
+*/
static int os2GetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
+ assert(zBuf[0]=='\0');
return 0;
}
@@ -22753,7 +24695,7 @@
*/
SQLITE_API int sqlite3_os_init(void){
static sqlite3_vfs os2Vfs = {
- 1, /* iVersion */
+ 3, /* iVersion */
sizeof(os2File), /* szOsFile */
CCHMAXPATH, /* mxPathname */
0, /* pNext */
@@ -22772,9 +24714,14 @@
os2Sleep, /* xSleep */
os2CurrentTime, /* xCurrentTime */
os2GetLastError, /* xGetLastError */
+ os2CurrentTimeInt64, /* xCurrentTimeInt64 */
+ 0, /* xSetSystemCall */
+ 0, /* xGetSystemCall */
+ 0 /* xNextSystemCall */
};
sqlite3_vfs_register(&os2Vfs, 1);
initUconvObjects();
+/* sqlite3OSTrace = 1; */
return SQLITE_OK;
}
SQLITE_API int sqlite3_os_end(void){
@@ -22903,9 +24850,13 @@
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
+/* #include <time.h> */
#include <sys/time.h>
#include <errno.h>
+#ifndef SQLITE_OMIT_WAL
#include <sys/mman.h>
+#endif
+
#if SQLITE_ENABLE_LOCKING_STYLE
# include <sys/ioctl.h>
@@ -22922,6 +24873,10 @@
# include <sys/mount.h>
#endif
+#ifdef HAVE_UTIME
+# include <utime.h>
+#endif
+
/*
** Allowed values of unixFile.fsFlags
*/
@@ -22932,6 +24887,7 @@
** the SQLITE_UNIX_THREADS macro.
*/
#if SQLITE_THREADSAFE
+/* # include <pthread.h> */
# define SQLITE_UNIX_THREADS 1
#endif
@@ -22985,14 +24941,14 @@
typedef struct unixFile unixFile;
struct unixFile {
sqlite3_io_methods const *pMethod; /* Always the first entry */
+ sqlite3_vfs *pVfs; /* The VFS that created this unixFile */
unixInodeInfo *pInode; /* Info about locks on this inode */
int h; /* The file descriptor */
- int dirfd; /* File descriptor for the directory */
unsigned char eFileLock; /* The type of lock held on this fd */
+ unsigned char ctrlFlags; /* Behavioral bits. UNIXFILE_* flags */
int lastErrno; /* The unix errno from last I/O error */
void *lockingContext; /* Locking style specific state */
UnixUnusedFd *pUnused; /* Pre-allocated UnixUnusedFd */
- int fileFlags; /* Miscellanous flags */
const char *zPath; /* Name of the file */
unixShm *pShm; /* Shared memory segment information */
int szChunk; /* Configured by FCNTL_CHUNK_SIZE */
@@ -23003,7 +24959,6 @@
unsigned fsFlags; /* cached details from statfs() */
#endif
#if OS_VXWORKS
- int isDelete; /* Delete on close if true */
struct vxworksFileId *pId; /* Unique file ID */
#endif
#ifndef NDEBUG
@@ -23027,9 +24982,20 @@
};
/*
-** The following macros define bits in unixFile.fileFlags
+** Allowed values for the unixFile.ctrlFlags bitmask:
*/
-#define SQLITE_WHOLE_FILE_LOCKING 0x0001 /* Use whole-file locking */
+#define UNIXFILE_EXCL 0x01 /* Connections from one process only */
+#define UNIXFILE_RDONLY 0x02 /* Connection is read only */
+#define UNIXFILE_PERSIST_WAL 0x04 /* Persistent WAL mode */
+#ifndef SQLITE_DISABLE_DIRSYNC
+# define UNIXFILE_DIRSYNC 0x08 /* Directory sync needed */
+#else
+# define UNIXFILE_DIRSYNC 0x00
+#endif
+#define UNIXFILE_PSOW 0x10 /* SQLITE_IOCAP_POWERSAFE_OVERWRITE */
+#define UNIXFILE_DELETE 0x20 /* Delete on close */
+#define UNIXFILE_URI 0x40 /* Filename might have query parameters */
+#define UNIXFILE_NOLOCK 0x80 /* Do no file locking */
/*
** Include code that is common to all os_*.c files
@@ -23067,11 +25033,14 @@
# error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead."
#endif
-#ifdef SQLITE_DEBUG
-SQLITE_PRIVATE int sqlite3OSTrace = 0;
-#define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X
+#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG)
+# ifndef SQLITE_DEBUG_OS_TRACE
+# define SQLITE_DEBUG_OS_TRACE 0
+# endif
+ int sqlite3OSTrace = SQLITE_DEBUG_OS_TRACE;
+# define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X
#else
-#define OSTRACE(X)
+# define OSTRACE(X)
#endif
/*
@@ -23259,16 +25228,6 @@
#endif
/*
-** The DJGPP compiler environment looks mostly like Unix, but it
-** lacks the fcntl() system call. So redefine fcntl() to be something
-** that always succeeds. This means that locking does not occur under
-** DJGPP. But it is DOS - what did you expect?
-*/
-#ifdef __DJGPP__
-# define fcntl(A,B,C) 0
-#endif
-
-/*
** The threadid macro resolves to the thread-id or to 0. Used for
** testing and debugging only.
*/
@@ -23278,6 +25237,222 @@
#define threadid 0
#endif
+/*
+** Different Unix systems declare open() in different ways. Same use
+** open(const char*,int,mode_t). Others use open(const char*,int,...).
+** The difference is important when using a pointer to the function.
+**
+** The safest way to deal with the problem is to always use this wrapper
+** which always has the same well-defined interface.
+*/
+static int posixOpen(const char *zFile, int flags, int mode){
+ return open(zFile, flags, mode);
+}
+
+/* Forward reference */
+static int openDirectory(const char*, int*);
+
+/*
+** Many system calls are accessed through pointer-to-functions so that
+** they may be overridden at runtime to facilitate fault injection during
+** testing and sandboxing. The following array holds the names and pointers
+** to all overrideable system calls.
+*/
+static struct unix_syscall {
+ const char *zName; /* Name of the sytem call */
+ sqlite3_syscall_ptr pCurrent; /* Current value of the system call */
+ sqlite3_syscall_ptr pDefault; /* Default value */
+} aSyscall[] = {
+ { "open", (sqlite3_syscall_ptr)posixOpen, 0 },
+#define osOpen ((int(*)(const char*,int,int))aSyscall[0].pCurrent)
+
+ { "close", (sqlite3_syscall_ptr)close, 0 },
+#define osClose ((int(*)(int))aSyscall[1].pCurrent)
+
+ { "access", (sqlite3_syscall_ptr)access, 0 },
+#define osAccess ((int(*)(const char*,int))aSyscall[2].pCurrent)
+
+ { "getcwd", (sqlite3_syscall_ptr)getcwd, 0 },
+#define osGetcwd ((char*(*)(char*,size_t))aSyscall[3].pCurrent)
+
+ { "stat", (sqlite3_syscall_ptr)stat, 0 },
+#define osStat ((int(*)(const char*,struct stat*))aSyscall[4].pCurrent)
+
+/*
+** The DJGPP compiler environment looks mostly like Unix, but it
+** lacks the fcntl() system call. So redefine fcntl() to be something
+** that always succeeds. This means that locking does not occur under
+** DJGPP. But it is DOS - what did you expect?
+*/
+#ifdef __DJGPP__
+ { "fstat", 0, 0 },
+#define osFstat(a,b,c) 0
+#else
+ { "fstat", (sqlite3_syscall_ptr)fstat, 0 },
+#define osFstat ((int(*)(int,struct stat*))aSyscall[5].pCurrent)
+#endif
+
+ { "ftruncate", (sqlite3_syscall_ptr)ftruncate, 0 },
+#define osFtruncate ((int(*)(int,off_t))aSyscall[6].pCurrent)
+
+ { "fcntl", (sqlite3_syscall_ptr)fcntl, 0 },
+#define osFcntl ((int(*)(int,int,...))aSyscall[7].pCurrent)
+
+ { "read", (sqlite3_syscall_ptr)read, 0 },
+#define osRead ((ssize_t(*)(int,void*,size_t))aSyscall[8].pCurrent)
+
+#if defined(USE_PREAD) || SQLITE_ENABLE_LOCKING_STYLE
+ { "pread", (sqlite3_syscall_ptr)pread, 0 },
+#else
+ { "pread", (sqlite3_syscall_ptr)0, 0 },
+#endif
+#define osPread ((ssize_t(*)(int,void*,size_t,off_t))aSyscall[9].pCurrent)
+
+#if defined(USE_PREAD64)
+ { "pread64", (sqlite3_syscall_ptr)pread64, 0 },
+#else
+ { "pread64", (sqlite3_syscall_ptr)0, 0 },
+#endif
+#define osPread64 ((ssize_t(*)(int,void*,size_t,off_t))aSyscall[10].pCurrent)
+
+ { "write", (sqlite3_syscall_ptr)write, 0 },
+#define osWrite ((ssize_t(*)(int,const void*,size_t))aSyscall[11].pCurrent)
+
+#if defined(USE_PREAD) || SQLITE_ENABLE_LOCKING_STYLE
+ { "pwrite", (sqlite3_syscall_ptr)pwrite, 0 },
+#else
+ { "pwrite", (sqlite3_syscall_ptr)0, 0 },
+#endif
+#define osPwrite ((ssize_t(*)(int,const void*,size_t,off_t))\
+ aSyscall[12].pCurrent)
+
+#if defined(USE_PREAD64)
+ { "pwrite64", (sqlite3_syscall_ptr)pwrite64, 0 },
+#else
+ { "pwrite64", (sqlite3_syscall_ptr)0, 0 },
+#endif
+#define osPwrite64 ((ssize_t(*)(int,const void*,size_t,off_t))\
+ aSyscall[13].pCurrent)
+
+#if SQLITE_ENABLE_LOCKING_STYLE
+ { "fchmod", (sqlite3_syscall_ptr)fchmod, 0 },
+#else
+ { "fchmod", (sqlite3_syscall_ptr)0, 0 },
+#endif
+#define osFchmod ((int(*)(int,mode_t))aSyscall[14].pCurrent)
+
+#if defined(HAVE_POSIX_FALLOCATE) && HAVE_POSIX_FALLOCATE
+ { "fallocate", (sqlite3_syscall_ptr)posix_fallocate, 0 },
+#else
+ { "fallocate", (sqlite3_syscall_ptr)0, 0 },
+#endif
+#define osFallocate ((int(*)(int,off_t,off_t))aSyscall[15].pCurrent)
+
+ { "unlink", (sqlite3_syscall_ptr)unlink, 0 },
+#define osUnlink ((int(*)(const char*))aSyscall[16].pCurrent)
+
+ { "openDirectory", (sqlite3_syscall_ptr)openDirectory, 0 },
+#define osOpenDirectory ((int(*)(const char*,int*))aSyscall[17].pCurrent)
+
+ { "mkdir", (sqlite3_syscall_ptr)mkdir, 0 },
+#define osMkdir ((int(*)(const char*,mode_t))aSyscall[18].pCurrent)
+
+ { "rmdir", (sqlite3_syscall_ptr)rmdir, 0 },
+#define osRmdir ((int(*)(const char*))aSyscall[19].pCurrent)
+
+}; /* End of the overrideable system calls */
+
+/*
+** This is the xSetSystemCall() method of sqlite3_vfs for all of the
+** "unix" VFSes. Return SQLITE_OK opon successfully updating the
+** system call pointer, or SQLITE_NOTFOUND if there is no configurable
+** system call named zName.
+*/
+static int unixSetSystemCall(
+ sqlite3_vfs *pNotUsed, /* The VFS pointer. Not used */
+ const char *zName, /* Name of system call to override */
+ sqlite3_syscall_ptr pNewFunc /* Pointer to new system call value */
+){
+ unsigned int i;
+ int rc = SQLITE_NOTFOUND;
+
+ UNUSED_PARAMETER(pNotUsed);
+ if( zName==0 ){
+ /* If no zName is given, restore all system calls to their default
+ ** settings and return NULL
+ */
+ rc = SQLITE_OK;
+ for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
+ if( aSyscall[i].pDefault ){
+ aSyscall[i].pCurrent = aSyscall[i].pDefault;
+ }
+ }
+ }else{
+ /* If zName is specified, operate on only the one system call
+ ** specified.
+ */
+ for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
+ if( strcmp(zName, aSyscall[i].zName)==0 ){
+ if( aSyscall[i].pDefault==0 ){
+ aSyscall[i].pDefault = aSyscall[i].pCurrent;
+ }
+ rc = SQLITE_OK;
+ if( pNewFunc==0 ) pNewFunc = aSyscall[i].pDefault;
+ aSyscall[i].pCurrent = pNewFunc;
+ break;
+ }
+ }
+ }
+ return rc;
+}
+
+/*
+** Return the value of a system call. Return NULL if zName is not a
+** recognized system call name. NULL is also returned if the system call
+** is currently undefined.
+*/
+static sqlite3_syscall_ptr unixGetSystemCall(
+ sqlite3_vfs *pNotUsed,
+ const char *zName
+){
+ unsigned int i;
+
+ UNUSED_PARAMETER(pNotUsed);
+ for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
+ if( strcmp(zName, aSyscall[i].zName)==0 ) return aSyscall[i].pCurrent;
+ }
+ return 0;
+}
+
+/*
+** Return the name of the first system call after zName. If zName==NULL
+** then return the name of the first system call. Return NULL if zName
+** is the last system call or if zName is not the name of a valid
+** system call.
+*/
+static const char *unixNextSystemCall(sqlite3_vfs *p, const char *zName){
+ int i = -1;
+
+ UNUSED_PARAMETER(p);
+ if( zName ){
+ for(i=0; i<ArraySize(aSyscall)-1; i++){
+ if( strcmp(zName, aSyscall[i].zName)==0 ) break;
+ }
+ }
+ for(i++; i<ArraySize(aSyscall); i++){
+ if( aSyscall[i].pCurrent!=0 ) return aSyscall[i].zName;
+ }
+ return 0;
+}
+
+/*
+** Retry open() calls that fail due to EINTR
+*/
+static int robust_open(const char *z, int f, int m){
+ int rc;
+ do{ rc = osOpen(z,f,m); }while( rc<0 && errno==EINTR );
+ return rc;
+}
/*
** Helper functions to obtain and relinquish the global mutex. The
@@ -23306,7 +25481,7 @@
#endif
-#ifdef SQLITE_DEBUG
+#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG)
/*
** Helper function for printing out trace information from debugging
** binaries. This returns the string represetation of the supplied
@@ -23342,7 +25517,7 @@
}else if( op==F_SETLK ){
zOpName = "SETLK";
}else{
- s = fcntl(fd, op, p);
+ s = osFcntl(fd, op, p);
sqlite3DebugPrintf("fcntl unknown %d %d %d\n", fd, op, s);
return s;
}
@@ -23356,7 +25531,7 @@
assert( 0 );
}
assert( p->l_whence==SEEK_SET );
- s = fcntl(fd, op, p);
+ s = osFcntl(fd, op, p);
savedErrno = errno;
sqlite3DebugPrintf("fcntl %d %d %s %s %d %d %d %d\n",
threadid, fd, zOpName, zType, (int)p->l_start, (int)p->l_len,
@@ -23364,7 +25539,7 @@
if( s==(-1) && op==F_SETLK && (p->l_type==F_RDLCK || p->l_type==F_WRLCK) ){
struct flock l2;
l2 = *p;
- fcntl(fd, F_GETLK, &l2);
+ osFcntl(fd, F_GETLK, &l2);
if( l2.l_type==F_RDLCK ){
zType = "RDLCK";
}else if( l2.l_type==F_WRLCK ){
@@ -23380,23 +25555,18 @@
errno = savedErrno;
return s;
}
-#define fcntl lockTrace
+#undef osFcntl
+#define osFcntl lockTrace
#endif /* SQLITE_LOCK_TRACE */
-
/*
** Retry ftruncate() calls that fail due to EINTR
*/
-#ifdef EINTR
static int robust_ftruncate(int h, sqlite3_int64 sz){
int rc;
- do{ rc = ftruncate(h,sz); }while( rc<0 && errno==EINTR );
+ do{ rc = osFtruncate(h,sz); }while( rc<0 && errno==EINTR );
return rc;
}
-#else
-# define robust_ftruncate(a,b) ftruncate(a,b)
-#endif
-
/*
** This routine translates a standard POSIX errno code into something
@@ -23410,9 +25580,22 @@
*/
static int sqliteErrorFromPosixError(int posixError, int sqliteIOErr) {
switch (posixError) {
+#if 0
+ /* At one point this code was not commented out. In theory, this branch
+ ** should never be hit, as this function should only be called after
+ ** a locking-related function (i.e. fcntl()) has returned non-zero with
+ ** the value of errno as the first argument. Since a system call has failed,
+ ** errno should be non-zero.
+ **
+ ** Despite this, if errno really is zero, we still don't want to return
+ ** SQLITE_OK. The system call failed, and *some* SQLite error should be
+ ** propagated back to the caller. Commenting this branch out means errno==0
+ ** will be handled by the "default:" case below.
+ */
case 0:
return SQLITE_OK;
-
+#endif
+
case EAGAIN:
case ETIMEDOUT:
case EBUSY:
@@ -23434,8 +25617,15 @@
case EPERM:
return SQLITE_PERM;
+ /* EDEADLK is only possible if a call to fcntl(F_SETLKW) is made. And
+ ** this module never makes such a call. And the code in SQLite itself
+ ** asserts that SQLITE_IOERR_BLOCKED is never returned. For these reasons
+ ** this case is also commented out. If the system does set errno to EDEADLK,
+ ** the default SQLITE_IOERR_XXX code will be returned. */
+#if 0
case EDEADLK:
return SQLITE_IOERR_BLOCKED;
+#endif
#if EOPNOTSUPP!=ENOTSUP
case EOPNOTSUPP:
@@ -23454,7 +25644,9 @@
case ENODEV:
case ENXIO:
case ENOENT:
+#ifdef ESTALE /* ESTALE is not defined on Interix systems */
case ESTALE:
+#endif
case ENOSYS:
/* these should force the client to close the file and reconnect */
@@ -23718,14 +25910,15 @@
struct unixInodeInfo {
struct unixFileId fileId; /* The lookup key */
int nShared; /* Number of SHARED locks held */
- int eFileLock; /* One of SHARED_LOCK, RESERVED_LOCK etc. */
+ unsigned char eFileLock; /* One of SHARED_LOCK, RESERVED_LOCK etc. */
+ unsigned char bProcessLock; /* An exclusive process lock is held */
int nRef; /* Number of pointers to this structure */
unixShmNode *pShmNode; /* Shared memory associated with this inode */
int nLock; /* Number of outstanding file locks */
UnixUnusedFd *pUnused; /* Unused file descriptors to close */
unixInodeInfo *pNext; /* List of all unixInodeInfo objects */
unixInodeInfo *pPrev; /* .... doubly linked */
-#if defined(SQLITE_ENABLE_LOCKING_STYLE)
+#if SQLITE_ENABLE_LOCKING_STYLE
unsigned long long sharedByte; /* for AFP simulated shared lock */
#endif
#if OS_VXWORKS
@@ -23755,14 +25948,15 @@
** failed (e.g. "unlink", "open") and the the associated file-system path,
** if any.
*/
-#define unixLogError(a,b,c) unixLogError_x(a,b,c,__LINE__)
-static int unixLogError_x(
+#define unixLogError(a,b,c) unixLogErrorAtLine(a,b,c,__LINE__)
+static int unixLogErrorAtLine(
int errcode, /* SQLite error code */
const char *zFunc, /* Name of OS function that failed */
const char *zPath, /* File path associated with error */
int iLine /* Source line number where error occurred */
){
char *zErr; /* Message from strerror() or equivalent */
+ int iErrno = errno; /* Saved syscall error number */
/* If this is not a threadsafe build (SQLITE_THREADSAFE==0), then use
** the strerror() function to obtain the human-readable error message
@@ -23788,54 +25982,59 @@
#if defined(STRERROR_R_CHAR_P) || defined(__USE_GNU)
zErr =
# endif
- strerror_r(errno, aErr, sizeof(aErr)-1);
+ strerror_r(iErrno, aErr, sizeof(aErr)-1);
#elif SQLITE_THREADSAFE
/* This is a threadsafe build, but strerror_r() is not available. */
zErr = "";
#else
/* Non-threadsafe build, use strerror(). */
- zErr = strerror(errno);
+ zErr = strerror(iErrno);
#endif
assert( errcode!=SQLITE_OK );
+ if( zPath==0 ) zPath = "";
sqlite3_log(errcode,
- "os_unix.c: %s() at line %d - \"%s\" errno=%d path=%s",
- zFunc, iLine, zErr, errno, (zPath ? zPath : "n/a")
+ "os_unix.c:%d: (%d) %s(%s) - %s",
+ iLine, iErrno, zFunc, zPath, zErr
);
return errcode;
}
+/*
+** Close a file descriptor.
+**
+** We assume that close() almost always works, since it is only in a
+** very sick application or on a very sick platform that it might fail.
+** If it does fail, simply leak the file descriptor, but do log the
+** error.
+**
+** Note that it is not safe to retry close() after EINTR since the
+** file descriptor might have already been reused by another thread.
+** So we don't even try to recover from an EINTR. Just log the error
+** and move on.
+*/
+static void robust_close(unixFile *pFile, int h, int lineno){
+ if( osClose(h) ){
+ unixLogErrorAtLine(SQLITE_IOERR_CLOSE, "close",
+ pFile ? pFile->zPath : 0, lineno);
+ }
+}
/*
** Close all file descriptors accumuated in the unixInodeInfo->pUnused list.
-** If all such file descriptors are closed without error, the list is
-** cleared and SQLITE_OK returned.
-**
-** Otherwise, if an error occurs, then successfully closed file descriptor
-** entries are removed from the list, and SQLITE_IOERR_CLOSE returned.
-** not deleted and SQLITE_IOERR_CLOSE returned.
*/
-static int closePendingFds(unixFile *pFile){
- int rc = SQLITE_OK;
+static void closePendingFds(unixFile *pFile){
unixInodeInfo *pInode = pFile->pInode;
- UnixUnusedFd *pError = 0;
UnixUnusedFd *p;
UnixUnusedFd *pNext;
for(p=pInode->pUnused; p; p=pNext){
pNext = p->pNext;
- if( close(p->fd) ){
- pFile->lastErrno = errno;
- rc = unixLogError(SQLITE_IOERR_CLOSE, "close", pFile->zPath);
- p->pNext = pError;
- pError = p;
- }else{
- sqlite3_free(p);
- }
+ robust_close(pFile, p->fd, __LINE__);
+ sqlite3_free(p);
}
- pInode->pUnused = pError;
- return rc;
+ pInode->pUnused = 0;
}
/*
@@ -23847,7 +26046,7 @@
static void releaseInodeInfo(unixFile *pFile){
unixInodeInfo *pInode = pFile->pInode;
assert( unixMutexHeld() );
- if( pInode ){
+ if( ALWAYS(pInode) ){
pInode->nRef--;
if( pInode->nRef==0 ){
assert( pInode->pShmNode==0 );
@@ -23894,7 +26093,7 @@
** create a unique name for the file.
*/
fd = pFile->h;
- rc = fstat(fd, &statbuf);
+ rc = osFstat(fd, &statbuf);
if( rc!=0 ){
pFile->lastErrno = errno;
#ifdef EOVERFLOW
@@ -23915,12 +26114,12 @@
** the first page of the database, no damage is done.
*/
if( statbuf.st_size==0 && (pFile->fsFlags & SQLITE_FSFLAGS_IS_MSDOS)!=0 ){
- do{ rc = write(fd, "S", 1); }while( rc<0 && errno==EINTR );
+ do{ rc = osWrite(fd, "S", 1); }while( rc<0 && errno==EINTR );
if( rc!=1 ){
pFile->lastErrno = errno;
return SQLITE_IOERR;
}
- rc = fstat(fd, &statbuf);
+ rc = osFstat(fd, &statbuf);
if( rc!=0 ){
pFile->lastErrno = errno;
return SQLITE_IOERR;
@@ -23983,16 +26182,15 @@
/* Otherwise see if some other process holds it.
*/
#ifndef __DJGPP__
- if( !reserved ){
+ if( !reserved && !pFile->pInode->bProcessLock ){
struct flock lock;
lock.l_whence = SEEK_SET;
lock.l_start = RESERVED_BYTE;
lock.l_len = 1;
lock.l_type = F_WRLCK;
- if (-1 == fcntl(pFile->h, F_GETLK, &lock)) {
- int tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_CHECKRESERVEDLOCK);
- pFile->lastErrno = tErrno;
+ if( osFcntl(pFile->h, F_GETLK, &lock) ){
+ rc = SQLITE_IOERR_CHECKRESERVEDLOCK;
+ pFile->lastErrno = errno;
} else if( lock.l_type!=F_UNLCK ){
reserved = 1;
}
@@ -24007,6 +26205,53 @@
}
/*
+** Attempt to set a system-lock on the file pFile. The lock is
+** described by pLock.
+**
+** If the pFile was opened read/write from unix-excl, then the only lock
+** ever obtained is an exclusive lock, and it is obtained exactly once
+** the first time any lock is attempted. All subsequent system locking
+** operations become no-ops. Locking operations still happen internally,
+** in order to coordinate access between separate database connections
+** within this process, but all of that is handled in memory and the
+** operating system does not participate.
+**
+** This function is a pass-through to fcntl(F_SETLK) if pFile is using
+** any VFS other than "unix-excl" or if pFile is opened on "unix-excl"
+** and is read-only.
+**
+** Zero is returned if the call completes successfully, or -1 if a call
+** to fcntl() fails. In this case, errno is set appropriately (by fcntl()).
+*/
+static int unixFileLock(unixFile *pFile, struct flock *pLock){
+ int rc;
+ unixInodeInfo *pInode = pFile->pInode;
+ assert( unixMutexHeld() );
+ assert( pInode!=0 );
+ if( ((pFile->ctrlFlags & UNIXFILE_EXCL)!=0 || pInode->bProcessLock)
+ && ((pFile->ctrlFlags & UNIXFILE_RDONLY)==0)
+ ){
+ if( pInode->bProcessLock==0 ){
+ struct flock lock;
+ assert( pInode->nLock==0 );
+ lock.l_whence = SEEK_SET;
+ lock.l_start = SHARED_FIRST;
+ lock.l_len = SHARED_SIZE;
+ lock.l_type = F_WRLCK;
+ rc = osFcntl(pFile->h, F_SETLK, &lock);
+ if( rc<0 ) return rc;
+ pInode->bProcessLock = 1;
+ pInode->nLock++;
+ }else{
+ rc = 0;
+ }
+ }else{
+ rc = osFcntl(pFile->h, F_SETLK, pLock);
+ }
+ return rc;
+}
+
+/*
** Lock the file with the lock specified by parameter eFileLock - one
** of the following:
**
@@ -24071,15 +26316,14 @@
*/
int rc = SQLITE_OK;
unixFile *pFile = (unixFile*)id;
- unixInodeInfo *pInode = pFile->pInode;
+ unixInodeInfo *pInode;
struct flock lock;
- int s = 0;
int tErrno = 0;
assert( pFile );
OSTRACE(("LOCK %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h,
azFileLock(eFileLock), azFileLock(pFile->eFileLock),
- azFileLock(pInode->eFileLock), pInode->nShared , getpid()));
+ azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared , getpid()));
/* If there is already a lock of this type or more restrictive on the
** unixFile, do nothing. Don't use the end_lock: exit path, as
@@ -24142,11 +26386,10 @@
){
lock.l_type = (eFileLock==SHARED_LOCK?F_RDLCK:F_WRLCK);
lock.l_start = PENDING_BYTE;
- s = fcntl(pFile->h, F_SETLK, &lock);
- if( s==(-1) ){
+ if( unixFileLock(pFile, &lock) ){
tErrno = errno;
rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
- if( IS_LOCK_ERROR(rc) ){
+ if( rc!=SQLITE_BUSY ){
pFile->lastErrno = tErrno;
}
goto end_lock;
@@ -24160,33 +26403,31 @@
if( eFileLock==SHARED_LOCK ){
assert( pInode->nShared==0 );
assert( pInode->eFileLock==0 );
+ assert( rc==SQLITE_OK );
/* Now get the read-lock */
lock.l_start = SHARED_FIRST;
lock.l_len = SHARED_SIZE;
- if( (s = fcntl(pFile->h, F_SETLK, &lock))==(-1) ){
+ if( unixFileLock(pFile, &lock) ){
tErrno = errno;
+ rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
}
+
/* Drop the temporary PENDING lock */
lock.l_start = PENDING_BYTE;
lock.l_len = 1L;
lock.l_type = F_UNLCK;
- if( fcntl(pFile->h, F_SETLK, &lock)!=0 ){
- if( s != -1 ){
- /* This could happen with a network mount */
- tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
- if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
- }
- goto end_lock;
- }
+ if( unixFileLock(pFile, &lock) && rc==SQLITE_OK ){
+ /* This could happen with a network mount */
+ tErrno = errno;
+ rc = SQLITE_IOERR_UNLOCK;
}
- if( s==(-1) ){
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
- if( IS_LOCK_ERROR(rc) ){
+
+ if( rc ){
+ if( rc!=SQLITE_BUSY ){
pFile->lastErrno = tErrno;
}
+ goto end_lock;
}else{
pFile->eFileLock = SHARED_LOCK;
pInode->nLock++;
@@ -24203,22 +26444,20 @@
*/
assert( 0!=pFile->eFileLock );
lock.l_type = F_WRLCK;
- switch( eFileLock ){
- case RESERVED_LOCK:
- lock.l_start = RESERVED_BYTE;
- break;
- case EXCLUSIVE_LOCK:
- lock.l_start = SHARED_FIRST;
- lock.l_len = SHARED_SIZE;
- break;
- default:
- assert(0);
+
+ assert( eFileLock==RESERVED_LOCK || eFileLock==EXCLUSIVE_LOCK );
+ if( eFileLock==RESERVED_LOCK ){
+ lock.l_start = RESERVED_BYTE;
+ lock.l_len = 1L;
+ }else{
+ lock.l_start = SHARED_FIRST;
+ lock.l_len = SHARED_SIZE;
}
- s = fcntl(pFile->h, F_SETLK, &lock);
- if( s==(-1) ){
+
+ if( unixFileLock(pFile, &lock) ){
tErrno = errno;
rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK);
- if( IS_LOCK_ERROR(rc) ){
+ if( rc!=SQLITE_BUSY ){
pFile->lastErrno = tErrno;
}
}
@@ -24283,13 +26522,11 @@
** around a bug in BSD NFS lockd (also seen on MacOSX 10.3+) that fails to
** remove the write lock on a region when a read lock is set.
*/
-static int _posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){
+static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){
unixFile *pFile = (unixFile*)id;
unixInodeInfo *pInode;
struct flock lock;
int rc = SQLITE_OK;
- int h;
- int tErrno; /* Error code from system call errors */
assert( pFile );
OSTRACE(("UNLOCK %d %d was %d(%d,%d) pid=%d (unix)\n", pFile->h, eFileLock,
@@ -24301,14 +26538,10 @@
return SQLITE_OK;
}
unixEnterMutex();
- h = pFile->h;
pInode = pFile->pInode;
assert( pInode->nShared!=0 );
if( pFile->eFileLock>SHARED_LOCK ){
assert( pInode->eFileLock==pFile->eFileLock );
- SimulateIOErrorBenign(1);
- SimulateIOError( h=(-1) )
- SimulateIOErrorBenign(0);
#ifndef NDEBUG
/* When reducing a lock such that other processes can start
@@ -24319,11 +26552,6 @@
** the file has changed and hence might not know to flush their
** cache. The use of a stale cache can lead to database corruption.
*/
-#if 0
- assert( pFile->inNormalWrite==0
- || pFile->dbUpdate==0
- || pFile->transCntrChng==1 );
-#endif
pFile->inNormalWrite = 0;
#endif
@@ -24337,16 +26565,23 @@
** 4: [RRRR.]
*/
if( eFileLock==SHARED_LOCK ){
+
+#if !defined(__APPLE__) || !SQLITE_ENABLE_LOCKING_STYLE
+ (void)handleNFSUnlock;
+ assert( handleNFSUnlock==0 );
+#endif
+#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE
if( handleNFSUnlock ){
+ int tErrno; /* Error code from system call errors */
off_t divSize = SHARED_SIZE - 1;
lock.l_type = F_UNLCK;
lock.l_whence = SEEK_SET;
lock.l_start = SHARED_FIRST;
lock.l_len = divSize;
- if( fcntl(h, F_SETLK, &lock)==(-1) ){
+ if( unixFileLock(pFile, &lock)==(-1) ){
tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
+ rc = SQLITE_IOERR_UNLOCK;
if( IS_LOCK_ERROR(rc) ){
pFile->lastErrno = tErrno;
}
@@ -24356,7 +26591,7 @@
lock.l_whence = SEEK_SET;
lock.l_start = SHARED_FIRST;
lock.l_len = divSize;
- if( fcntl(h, F_SETLK, &lock)==(-1) ){
+ if( unixFileLock(pFile, &lock)==(-1) ){
tErrno = errno;
rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_RDLOCK);
if( IS_LOCK_ERROR(rc) ){
@@ -24368,25 +26603,30 @@
lock.l_whence = SEEK_SET;
lock.l_start = SHARED_FIRST+divSize;
lock.l_len = SHARED_SIZE-divSize;
- if( fcntl(h, F_SETLK, &lock)==(-1) ){
+ if( unixFileLock(pFile, &lock)==(-1) ){
tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
+ rc = SQLITE_IOERR_UNLOCK;
if( IS_LOCK_ERROR(rc) ){
pFile->lastErrno = tErrno;
}
goto end_unlock;
}
- }else{
+ }else
+#endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */
+ {
lock.l_type = F_RDLCK;
lock.l_whence = SEEK_SET;
lock.l_start = SHARED_FIRST;
lock.l_len = SHARED_SIZE;
- if( fcntl(h, F_SETLK, &lock)==(-1) ){
- tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_RDLOCK);
- if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
- }
+ if( unixFileLock(pFile, &lock) ){
+ /* In theory, the call to unixFileLock() cannot fail because another
+ ** process is holding an incompatible lock. If it does, this
+ ** indicates that the other process is not following the locking
+ ** protocol. If this happens, return SQLITE_IOERR_RDLOCK. Returning
+ ** SQLITE_BUSY would confuse the upper layer (in practice it causes
+ ** an assert to fail). */
+ rc = SQLITE_IOERR_RDLOCK;
+ pFile->lastErrno = errno;
goto end_unlock;
}
}
@@ -24395,14 +26635,11 @@
lock.l_whence = SEEK_SET;
lock.l_start = PENDING_BYTE;
lock.l_len = 2L; assert( PENDING_BYTE+1==RESERVED_BYTE );
- if( fcntl(h, F_SETLK, &lock)!=(-1) ){
+ if( unixFileLock(pFile, &lock)==0 ){
pInode->eFileLock = SHARED_LOCK;
}else{
- tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
- if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
- }
+ rc = SQLITE_IOERR_UNLOCK;
+ pFile->lastErrno = errno;
goto end_unlock;
}
}
@@ -24416,17 +26653,11 @@
lock.l_type = F_UNLCK;
lock.l_whence = SEEK_SET;
lock.l_start = lock.l_len = 0L;
- SimulateIOErrorBenign(1);
- SimulateIOError( h=(-1) )
- SimulateIOErrorBenign(0);
- if( fcntl(h, F_SETLK, &lock)!=(-1) ){
+ if( unixFileLock(pFile, &lock)==0 ){
pInode->eFileLock = NO_LOCK;
}else{
- tErrno = errno;
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
- if( IS_LOCK_ERROR(rc) ){
- pFile->lastErrno = tErrno;
- }
+ rc = SQLITE_IOERR_UNLOCK;
+ pFile->lastErrno = errno;
pInode->eFileLock = NO_LOCK;
pFile->eFileLock = NO_LOCK;
}
@@ -24439,10 +26670,7 @@
pInode->nLock--;
assert( pInode->nLock>=0 );
if( pInode->nLock==0 ){
- int rc2 = closePendingFds(pFile);
- if( rc==SQLITE_OK ){
- rc = rc2;
- }
+ closePendingFds(pFile);
}
}
@@ -24460,7 +26688,7 @@
** the requested locking level, this routine is a no-op.
*/
static int unixUnlock(sqlite3_file *id, int eFileLock){
- return _posixUnlock(id, eFileLock, 0);
+ return posixUnlock(id, eFileLock, 0);
}
/*
@@ -24475,37 +26703,23 @@
*/
static int closeUnixFile(sqlite3_file *id){
unixFile *pFile = (unixFile*)id;
- if( pFile ){
- if( pFile->dirfd>=0 ){
- int err = close(pFile->dirfd);
- if( err ){
- pFile->lastErrno = errno;
- return unixLogError(SQLITE_IOERR_DIR_CLOSE, "close", pFile->zPath);
- }else{
- pFile->dirfd=-1;
- }
- }
- if( pFile->h>=0 ){
- int err = close(pFile->h);
- if( err ){
- pFile->lastErrno = errno;
- return unixLogError(SQLITE_IOERR_CLOSE, "close", pFile->zPath);
- }
- }
-#if OS_VXWORKS
- if( pFile->pId ){
- if( pFile->isDelete ){
- unlink(pFile->pId->zCanonicalName);
- }
- vxworksReleaseFileId(pFile->pId);
- pFile->pId = 0;
- }
-#endif
- OSTRACE(("CLOSE %-3d\n", pFile->h));
- OpenCounter(-1);
- sqlite3_free(pFile->pUnused);
- memset(pFile, 0, sizeof(unixFile));
+ if( pFile->h>=0 ){
+ robust_close(pFile, pFile->h, __LINE__);
+ pFile->h = -1;
}
+#if OS_VXWORKS
+ if( pFile->pId ){
+ if( pFile->ctrlFlags & UNIXFILE_DELETE ){
+ osUnlink(pFile->pId->zCanonicalName);
+ }
+ vxworksReleaseFileId(pFile->pId);
+ pFile->pId = 0;
+ }
+#endif
+ OSTRACE(("CLOSE %-3d\n", pFile->h));
+ OpenCounter(-1);
+ sqlite3_free(pFile->pUnused);
+ memset(pFile, 0, sizeof(unixFile));
return SQLITE_OK;
}
@@ -24514,22 +26728,25 @@
*/
static int unixClose(sqlite3_file *id){
int rc = SQLITE_OK;
- if( id ){
- unixFile *pFile = (unixFile *)id;
- unixUnlock(id, NO_LOCK);
- unixEnterMutex();
- if( pFile->pInode && pFile->pInode->nLock ){
- /* If there are outstanding locks, do not actually close the file just
- ** yet because that would clear those locks. Instead, add the file
- ** descriptor to pInode->pUnused list. It will be automatically closed
- ** when the last lock is cleared.
- */
- setPendingFd(pFile);
- }
- releaseInodeInfo(pFile);
- rc = closeUnixFile(id);
- unixLeaveMutex();
+ unixFile *pFile = (unixFile *)id;
+ unixUnlock(id, NO_LOCK);
+ unixEnterMutex();
+
+ /* unixFile.pInode is always valid here. Otherwise, a different close
+ ** routine (e.g. nolockClose()) would be called instead.
+ */
+ assert( pFile->pInode->nLock>0 || pFile->pInode->bProcessLock==0 );
+ if( ALWAYS(pFile->pInode) && pFile->pInode->nLock ){
+ /* If there are outstanding locks, do not actually close the file just
+ ** yet because that would clear those locks. Instead, add the file
+ ** descriptor to pInode->pUnused list. It will be automatically closed
+ ** when the last lock is cleared.
+ */
+ setPendingFd(pFile);
}
+ releaseInodeInfo(pFile);
+ rc = closeUnixFile(id);
+ unixLeaveMutex();
return rc;
}
@@ -24581,8 +26798,8 @@
************************* Begin dot-file Locking ******************************
**
** The dotfile locking implementation uses the existance of separate lock
-** files in order to control access to the database. This works on just
-** about every filesystem imaginable. But there are serious downsides:
+** files (really a directory) to control access to the database. This works
+** on just about every filesystem imaginable. But there are serious downsides:
**
** (1) There is zero concurrency. A single reader blocks all other
** connections from reading or writing the database.
@@ -24593,15 +26810,15 @@
** Nevertheless, a dotlock is an appropriate locking mode for use if no
** other locking strategy is available.
**
-** Dotfile locking works by creating a file in the same directory as the
-** database and with the same name but with a ".lock" extension added.
-** The existance of a lock file implies an EXCLUSIVE lock. All other lock
-** types (SHARED, RESERVED, PENDING) are mapped into EXCLUSIVE.
+** Dotfile locking works by creating a subdirectory in the same directory as
+** the database and with the same name but with a ".lock" extension added.
+** The existance of a lock directory implies an EXCLUSIVE lock. All other
+** lock types (SHARED, RESERVED, PENDING) are mapped into EXCLUSIVE.
*/
/*
** The file suffix added to the data base filename in order to create the
-** lock file.
+** lock directory.
*/
#define DOTLOCK_SUFFIX ".lock"
@@ -24632,7 +26849,7 @@
}else{
/* The lock is held if and only if the lockfile exists */
const char *zLockFile = (const char*)pFile->lockingContext;
- reserved = access(zLockFile, 0)==0;
+ reserved = osAccess(zLockFile, 0)==0;
}
OSTRACE(("TEST WR-LOCK %d %d %d (dotlock)\n", pFile->h, rc, reserved));
*pResOut = reserved;
@@ -24668,7 +26885,6 @@
*/
static int dotlockLock(sqlite3_file *id, int eFileLock) {
unixFile *pFile = (unixFile*)id;
- int fd;
char *zLockFile = (char *)pFile->lockingContext;
int rc = SQLITE_OK;
@@ -24678,17 +26894,19 @@
*/
if( pFile->eFileLock > NO_LOCK ){
pFile->eFileLock = eFileLock;
-#if !OS_VXWORKS
/* Always update the timestamp on the old file */
+#ifdef HAVE_UTIME
+ utime(zLockFile, NULL);
+#else
utimes(zLockFile, NULL);
#endif
return SQLITE_OK;
}
/* grab an exclusive lock */
- fd = open(zLockFile,O_RDONLY|O_CREAT|O_EXCL,0600);
- if( fd<0 ){
- /* failed to open/create the file, someone else may have stolen the lock */
+ rc = osMkdir(zLockFile, 0777);
+ if( rc<0 ){
+ /* failed to open/create the lock directory */
int tErrno = errno;
if( EEXIST == tErrno ){
rc = SQLITE_BUSY;
@@ -24700,10 +26918,6 @@
}
return rc;
}
- if( close(fd) ){
- pFile->lastErrno = errno;
- rc = SQLITE_IOERR_CLOSE;
- }
/* got it, set the type and return ok */
pFile->eFileLock = eFileLock;
@@ -24722,6 +26936,7 @@
static int dotlockUnlock(sqlite3_file *id, int eFileLock) {
unixFile *pFile = (unixFile*)id;
char *zLockFile = (char *)pFile->lockingContext;
+ int rc;
assert( pFile );
OSTRACE(("UNLOCK %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock,
@@ -24743,11 +26958,13 @@
/* To fully unlock the database, delete the lock file */
assert( eFileLock==NO_LOCK );
- if( unlink(zLockFile) ){
- int rc = 0;
+ rc = osRmdir(zLockFile);
+ if( rc<0 && errno==ENOTDIR ) rc = osUnlink(zLockFile);
+ if( rc<0 ){
int tErrno = errno;
+ rc = 0;
if( ENOENT != tErrno ){
- rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
+ rc = SQLITE_IOERR_UNLOCK;
}
if( IS_LOCK_ERROR(rc) ){
pFile->lastErrno = tErrno;
@@ -24835,7 +27052,7 @@
if ( lrc ) {
int tErrno = errno;
/* unlock failed with an error */
- lrc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
+ lrc = SQLITE_IOERR_UNLOCK;
if( IS_LOCK_ERROR(lrc) ){
pFile->lastErrno = tErrno;
rc = lrc;
@@ -24957,21 +27174,12 @@
}
/* no, really, unlock. */
- int rc = robust_flock(pFile->h, LOCK_UN);
- if (rc) {
- int r, tErrno = errno;
- r = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK);
- if( IS_LOCK_ERROR(r) ){
- pFile->lastErrno = tErrno;
- }
+ if( robust_flock(pFile->h, LOCK_UN) ){
#ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS
- if( (r & SQLITE_IOERR) == SQLITE_IOERR ){
- r = SQLITE_BUSY;
- }
+ return SQLITE_OK;
#endif /* SQLITE_IGNORE_FLOCK_LOCK_ERRORS */
-
- return r;
- } else {
+ return SQLITE_IOERR_UNLOCK;
+ }else{
pFile->eFileLock = NO_LOCK;
return SQLITE_OK;
}
@@ -25258,11 +27466,12 @@
int rc = SQLITE_OK;
int reserved = 0;
unixFile *pFile = (unixFile*)id;
+ afpLockingContext *context;
SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; );
assert( pFile );
- afpLockingContext *context = (afpLockingContext *) pFile->lockingContext;
+ context = (afpLockingContext *) pFile->lockingContext;
if( context->reserved ){
*pResOut = 1;
return SQLITE_OK;
@@ -25402,7 +27611,7 @@
** operating system calls for the specified lock.
*/
if( eFileLock==SHARED_LOCK ){
- int lrc1, lrc2, lrc1Errno;
+ int lrc1, lrc2, lrc1Errno = 0;
long lk, mask;
assert( pInode->nShared==0 );
@@ -25595,7 +27804,7 @@
pInode->nLock--;
assert( pInode->nLock>=0 );
if( pInode->nLock==0 ){
- rc = closePendingFds(pFile);
+ closePendingFds(pFile);
}
}
}
@@ -25652,7 +27861,7 @@
** the requested locking level, this routine is a no-op.
*/
static int nfsUnlock(sqlite3_file *id, int eFileLock){
- return _posixUnlock(id, eFileLock, 1);
+ return posixUnlock(id, eFileLock, 1);
}
#endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */
@@ -25689,35 +27898,48 @@
*/
static int seekAndRead(unixFile *id, sqlite3_int64 offset, void *pBuf, int cnt){
int got;
+ int prior = 0;
#if (!defined(USE_PREAD) && !defined(USE_PREAD64))
i64 newOffset;
#endif
TIMER_START;
+ do{
#if defined(USE_PREAD)
- do{ got = pread(id->h, pBuf, cnt, offset); }while( got<0 && errno==EINTR );
- SimulateIOError( got = -1 );
+ got = osPread(id->h, pBuf, cnt, offset);
+ SimulateIOError( got = -1 );
#elif defined(USE_PREAD64)
- do{ got = pread64(id->h, pBuf, cnt, offset); }while( got<0 && errno==EINTR );
- SimulateIOError( got = -1 );
+ got = osPread64(id->h, pBuf, cnt, offset);
+ SimulateIOError( got = -1 );
#else
- newOffset = lseek(id->h, offset, SEEK_SET);
- SimulateIOError( newOffset-- );
- if( newOffset!=offset ){
- if( newOffset == -1 ){
- ((unixFile*)id)->lastErrno = errno;
- }else{
- ((unixFile*)id)->lastErrno = 0;
+ newOffset = lseek(id->h, offset, SEEK_SET);
+ SimulateIOError( newOffset-- );
+ if( newOffset!=offset ){
+ if( newOffset == -1 ){
+ ((unixFile*)id)->lastErrno = errno;
+ }else{
+ ((unixFile*)id)->lastErrno = 0;
+ }
+ return -1;
}
- return -1;
- }
- do{ got = read(id->h, pBuf, cnt); }while( got<0 && errno==EINTR );
+ got = osRead(id->h, pBuf, cnt);
#endif
+ if( got==cnt ) break;
+ if( got<0 ){
+ if( errno==EINTR ){ got = 1; continue; }
+ prior = 0;
+ ((unixFile*)id)->lastErrno = errno;
+ break;
+ }else if( got>0 ){
+ cnt -= got;
+ offset += got;
+ prior += got;
+ pBuf = (void*)(got + (char*)pBuf);
+ }
+ }while( got>0 );
TIMER_END;
- if( got<0 ){
- ((unixFile*)id)->lastErrno = errno;
- }
- OSTRACE(("READ %-3d %5d %7lld %llu\n", id->h, got, offset, TIMER_ELAPSED));
- return got;
+ OSTRACE(("READ %-3d %5d %7lld %llu\n",
+ id->h, got+prior, offset-prior, TIMER_ELAPSED));
+ return got+prior;
}
/*
@@ -25772,20 +27994,23 @@
#endif
TIMER_START;
#if defined(USE_PREAD)
- do{ got = pwrite(id->h, pBuf, cnt, offset); }while( got<0 && errno==EINTR );
+ do{ got = osPwrite(id->h, pBuf, cnt, offset); }while( got<0 && errno==EINTR );
#elif defined(USE_PREAD64)
- do{ got = pwrite64(id->h, pBuf, cnt, offset); }while( got<0 && errno==EINTR );
+ do{ got = osPwrite64(id->h, pBuf, cnt, offset);}while( got<0 && errno==EINTR);
#else
- newOffset = lseek(id->h, offset, SEEK_SET);
- if( newOffset!=offset ){
- if( newOffset == -1 ){
- ((unixFile*)id)->lastErrno = errno;
- }else{
- ((unixFile*)id)->lastErrno = 0;
+ do{
+ newOffset = lseek(id->h, offset, SEEK_SET);
+ SimulateIOError( newOffset-- );
+ if( newOffset!=offset ){
+ if( newOffset == -1 ){
+ ((unixFile*)id)->lastErrno = errno;
+ }else{
+ ((unixFile*)id)->lastErrno = 0;
+ }
+ return -1;
}
- return -1;
- }
- do{ got = write(id->h, pBuf, cnt); }while( got<0 && errno==EINTR );
+ got = osWrite(id->h, pBuf, cnt);
+ }while( got<0 && errno==EINTR );
#endif
TIMER_END;
if( got<0 ){
@@ -25852,7 +28077,7 @@
SimulateDiskfullError(( wrote=0, amt=1 ));
if( amt>0 ){
- if( wrote<0 ){
+ if( wrote<0 && pFile->lastErrno!=ENOSPC ){
/* lastErrno set by seekAndWrite */
return SQLITE_IOERR_WRITE;
}else{
@@ -25875,11 +28100,11 @@
/*
** We do not trust systems to provide a working fdatasync(). Some do.
-** Others do no. To be safe, we will stick with the (slower) fsync().
-** If you know that your system does support fdatasync() correctly,
+** Others do no. To be safe, we will stick with the (slightly slower)
+** fsync(). If you know that your system does support fdatasync() correctly,
** then simply compile with -Dfdatasync=fdatasync
*/
-#if !defined(fdatasync) && !defined(__linux__)
+#if !defined(fdatasync)
# define fdatasync fsync
#endif
@@ -25953,7 +28178,7 @@
rc = SQLITE_OK;
#elif HAVE_FULLFSYNC
if( fullSync ){
- rc = fcntl(fd, F_FULLFSYNC, 0);
+ rc = osFcntl(fd, F_FULLFSYNC, 0);
}else{
rc = 1;
}
@@ -25988,6 +28213,50 @@
}
/*
+** Open a file descriptor to the directory containing file zFilename.
+** If successful, *pFd is set to the opened file descriptor and
+** SQLITE_OK is returned. If an error occurs, either SQLITE_NOMEM
+** or SQLITE_CANTOPEN is returned and *pFd is set to an undefined
+** value.
+**
+** The directory file descriptor is used for only one thing - to
+** fsync() a directory to make sure file creation and deletion events
+** are flushed to disk. Such fsyncs are not needed on newer
+** journaling filesystems, but are required on older filesystems.
+**
+** This routine can be overridden using the xSetSysCall interface.
+** The ability to override this routine was added in support of the
+** chromium sandbox. Opening a directory is a security risk (we are
+** told) so making it overrideable allows the chromium sandbox to
+** replace this routine with a harmless no-op. To make this routine
+** a no-op, replace it with a stub that returns SQLITE_OK but leaves
+** *pFd set to a negative number.
+**
+** If SQLITE_OK is returned, the caller is responsible for closing
+** the file descriptor *pFd using close().
+*/
+static int openDirectory(const char *zFilename, int *pFd){
+ int ii;
+ int fd = -1;
+ char zDirname[MAX_PATHNAME+1];
+
+ sqlite3_snprintf(MAX_PATHNAME, zDirname, "%s", zFilename);
+ for(ii=(int)strlen(zDirname); ii>1 && zDirname[ii]!='/'; ii--);
+ if( ii>0 ){
+ zDirname[ii] = '\0';
+ fd = robust_open(zDirname, O_RDONLY|O_BINARY, 0);
+ if( fd>=0 ){
+#ifdef FD_CLOEXEC
+ osFcntl(fd, F_SETFD, osFcntl(fd, F_GETFD, 0) | FD_CLOEXEC);
+#endif
+ OSTRACE(("OPENDIR %-3d %s\n", fd, zDirname));
+ }
+ }
+ *pFd = fd;
+ return (fd>=0?SQLITE_OK:unixLogError(SQLITE_CANTOPEN_BKPT, "open", zDirname));
+}
+
+/*
** Make sure all writes to a particular file are committed to disk.
**
** If dataOnly==0 then both the file itself and its metadata (file
@@ -26027,33 +28296,23 @@
pFile->lastErrno = errno;
return unixLogError(SQLITE_IOERR_FSYNC, "full_fsync", pFile->zPath);
}
- if( pFile->dirfd>=0 ){
- int err;
- OSTRACE(("DIRSYNC %-3d (have_fullfsync=%d fullsync=%d)\n", pFile->dirfd,
+
+ /* Also fsync the directory containing the file if the DIRSYNC flag
+ ** is set. This is a one-time occurrance. Many systems (examples: AIX)
+ ** are unable to fsync a directory, so ignore errors on the fsync.
+ */
+ if( pFile->ctrlFlags & UNIXFILE_DIRSYNC ){
+ int dirfd;
+ OSTRACE(("DIRSYNC %s (have_fullfsync=%d fullsync=%d)\n", pFile->zPath,
HAVE_FULLFSYNC, isFullsync));
-#ifndef SQLITE_DISABLE_DIRSYNC
- /* The directory sync is only attempted if full_fsync is
- ** turned off or unavailable. If a full_fsync occurred above,
- ** then the directory sync is superfluous.
- */
- if( (!HAVE_FULLFSYNC || !isFullsync) && full_fsync(pFile->dirfd,0,0) ){
- /*
- ** We have received multiple reports of fsync() returning
- ** errors when applied to directories on certain file systems.
- ** A failed directory sync is not a big deal. So it seems
- ** better to ignore the error. Ticket #1657
- */
- /* pFile->lastErrno = errno; */
- /* return SQLITE_IOERR; */
+ rc = osOpenDirectory(pFile->zPath, &dirfd);
+ if( rc==SQLITE_OK && dirfd>=0 ){
+ full_fsync(dirfd, 0, 0);
+ robust_close(pFile, dirfd, __LINE__);
+ }else if( rc==SQLITE_CANTOPEN ){
+ rc = SQLITE_OK;
}
-#endif
- err = close(pFile->dirfd); /* Only need to sync once, so close the */
- if( err==0 ){ /* directory when we are done */
- pFile->dirfd = -1;
- }else{
- pFile->lastErrno = errno;
- rc = unixLogError(SQLITE_IOERR_DIR_CLOSE, "close", pFile->zPath);
- }
+ pFile->ctrlFlags &= ~UNIXFILE_DIRSYNC;
}
return rc;
}
@@ -26105,7 +28364,7 @@
int rc;
struct stat buf;
assert( id );
- rc = fstat(((unixFile*)id)->h, &buf);
+ rc = osFstat(((unixFile*)id)->h, &buf);
SimulateIOError( rc=1 );
if( rc!=0 ){
((unixFile*)id)->lastErrno = errno;
@@ -26135,27 +28394,29 @@
/*
** This function is called to handle the SQLITE_FCNTL_SIZE_HINT
-** file-control operation.
-**
-** If the user has configured a chunk-size for this file, it could be
-** that the file needs to be extended at this point. Otherwise, the
-** SQLITE_FCNTL_SIZE_HINT operation is a no-op for Unix.
+** file-control operation. Enlarge the database to nBytes in size
+** (rounded up to the next chunk-size). If the database is already
+** nBytes or larger, this routine is a no-op.
*/
static int fcntlSizeHint(unixFile *pFile, i64 nByte){
- if( pFile->szChunk ){
+ if( pFile->szChunk>0 ){
i64 nSize; /* Required file size */
struct stat buf; /* Used to hold return values of fstat() */
- if( fstat(pFile->h, &buf) ) return SQLITE_IOERR_FSTAT;
+ if( osFstat(pFile->h, &buf) ) return SQLITE_IOERR_FSTAT;
nSize = ((nByte+pFile->szChunk-1) / pFile->szChunk) * pFile->szChunk;
if( nSize>(i64)buf.st_size ){
+
#if defined(HAVE_POSIX_FALLOCATE) && HAVE_POSIX_FALLOCATE
- int rc;
+ /* The code below is handling the return value of osFallocate()
+ ** correctly. posix_fallocate() is defined to "returns zero on success,
+ ** or an error number on failure". See the manpage for details. */
+ int err;
do{
- rc = posix_fallocate(pFile-.h, buf.st_size, nSize-buf.st_size;
- }while( rc<0 && errno=EINTR );
- if( rc ) return SQLITE_IOERR_WRITE;
+ err = osFallocate(pFile->h, buf.st_size, nSize-buf.st_size);
+ }while( err==EINTR );
+ if( err ) return SQLITE_IOERR_WRITE;
#else
/* If the OS does not have posix_fallocate(), fake it. First use
** ftruncate() to set the file size, then write a single byte to
@@ -26165,18 +28426,17 @@
*/
int nBlk = buf.st_blksize; /* File-system block size */
i64 iWrite; /* Next offset to write to */
- int nWrite; /* Return value from seekAndWrite() */
if( robust_ftruncate(pFile->h, nSize) ){
pFile->lastErrno = errno;
return unixLogError(SQLITE_IOERR_TRUNCATE, "ftruncate", pFile->zPath);
}
iWrite = ((buf.st_size + 2*nBlk - 1)/nBlk)*nBlk-1;
- do {
- nWrite = seekAndWrite(pFile, iWrite, "", 1);
+ while( iWrite<nSize ){
+ int nWrite = seekAndWrite(pFile, iWrite, "", 1);
+ if( nWrite!=1 ) return SQLITE_IOERR_WRITE;
iWrite += nBlk;
- } while( nWrite==1 && iWrite<nSize );
- if( nWrite!=1 ) return SQLITE_IOERR_WRITE;
+ }
#endif
}
}
@@ -26185,24 +28445,57 @@
}
/*
+** If *pArg is inititially negative then this is a query. Set *pArg to
+** 1 or 0 depending on whether or not bit mask of pFile->ctrlFlags is set.
+**
+** If *pArg is 0 or 1, then clear or set the mask bit of pFile->ctrlFlags.
+*/
+static void unixModeBit(unixFile *pFile, unsigned char mask, int *pArg){
+ if( *pArg<0 ){
+ *pArg = (pFile->ctrlFlags & mask)!=0;
+ }else if( (*pArg)==0 ){
+ pFile->ctrlFlags &= ~mask;
+ }else{
+ pFile->ctrlFlags |= mask;
+ }
+}
+
+/*
** Information and control of an open file handle.
*/
static int unixFileControl(sqlite3_file *id, int op, void *pArg){
+ unixFile *pFile = (unixFile*)id;
switch( op ){
case SQLITE_FCNTL_LOCKSTATE: {
- *(int*)pArg = ((unixFile*)id)->eFileLock;
+ *(int*)pArg = pFile->eFileLock;
return SQLITE_OK;
}
case SQLITE_LAST_ERRNO: {
- *(int*)pArg = ((unixFile*)id)->lastErrno;
+ *(int*)pArg = pFile->lastErrno;
return SQLITE_OK;
}
case SQLITE_FCNTL_CHUNK_SIZE: {
- ((unixFile*)id)->szChunk = *(int *)pArg;
+ pFile->szChunk = *(int *)pArg;
return SQLITE_OK;
}
case SQLITE_FCNTL_SIZE_HINT: {
- return fcntlSizeHint((unixFile *)id, *(i64 *)pArg);
+ int rc;
+ SimulateIOErrorBenign(1);
+ rc = fcntlSizeHint(pFile, *(i64 *)pArg);
+ SimulateIOErrorBenign(0);
+ return rc;
+ }
+ case SQLITE_FCNTL_PERSIST_WAL: {
+ unixModeBit(pFile, UNIXFILE_PERSIST_WAL, (int*)pArg);
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_POWERSAFE_OVERWRITE: {
+ unixModeBit(pFile, UNIXFILE_PSOW, (int*)pArg);
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_VFSNAME: {
+ *(char**)pArg = sqlite3_mprintf("%s", pFile->pVfs->zName);
+ return SQLITE_OK;
}
#ifndef NDEBUG
/* The pager calls this method to signal that it has done
@@ -26222,7 +28515,7 @@
}
#endif /* SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) */
}
- return SQLITE_ERROR;
+ return SQLITE_NOTFOUND;
}
/*
@@ -26235,17 +28528,31 @@
** a database and its journal file) that the sector size will be the
** same for both.
*/
-static int unixSectorSize(sqlite3_file *NotUsed){
- UNUSED_PARAMETER(NotUsed);
+static int unixSectorSize(sqlite3_file *pFile){
+ (void)pFile;
return SQLITE_DEFAULT_SECTOR_SIZE;
}
/*
-** Return the device characteristics for the file. This is always 0 for unix.
+** Return the device characteristics for the file.
+**
+** This VFS is set up to return SQLITE_IOCAP_POWERSAFE_OVERWRITE by default.
+** However, that choice is contraversial since technically the underlying
+** file system does not always provide powersafe overwrites. (In other
+** words, after a power-loss event, parts of the file that were never
+** written might end up being altered.) However, non-PSOW behavior is very,
+** very rare. And asserting PSOW makes a large reduction in the amount
+** of required I/O for journaling, since a lot of padding is eliminated.
+** Hence, while POWERSAFE_OVERWRITE is on by default, there is a file-control
+** available to turn it off and URI query parameter available to turn it off.
*/
-static int unixDeviceCharacteristics(sqlite3_file *NotUsed){
- UNUSED_PARAMETER(NotUsed);
- return 0;
+static int unixDeviceCharacteristics(sqlite3_file *id){
+ unixFile *p = (unixFile*)id;
+ if( p->ctrlFlags & UNIXFILE_PSOW ){
+ return SQLITE_IOCAP_POWERSAFE_OVERWRITE;
+ }else{
+ return 0;
+ }
}
#ifndef SQLITE_OMIT_WAL
@@ -26286,7 +28593,8 @@
char *zFilename; /* Name of the mmapped file */
int h; /* Open file descriptor */
int szRegion; /* Size of shared-memory regions */
- int nRegion; /* Size of array apRegion */
+ u16 nRegion; /* Size of array apRegion */
+ u8 isReadonly; /* True if read-only */
char **apRegion; /* Array of mapped shared-memory regions */
int nRef; /* Number of unixShm objects pointing to this */
unixShm *pFirst; /* All unixShm objects pointing to this */
@@ -26314,11 +28622,9 @@
unixShmNode *pShmNode; /* The underlying unixShmNode object */
unixShm *pNext; /* Next unixShm with the same unixShmNode */
u8 hasMutex; /* True if holding the unixShmNode mutex */
+ u8 id; /* Id of this connection within its unixShmNode */
u16 sharedMask; /* Mask of shared locks held */
u16 exclMask; /* Mask of exclusive locks held */
-#ifdef SQLITE_DEBUG
- u8 id; /* Id of this connection within its unixShmNode */
-#endif
};
/*
@@ -26351,15 +28657,17 @@
/* Locks are within range */
assert( n>=1 && n<SQLITE_SHM_NLOCK );
- /* Initialize the locking parameters */
- memset(&f, 0, sizeof(f));
- f.l_type = lockType;
- f.l_whence = SEEK_SET;
- f.l_start = ofst;
- f.l_len = n;
+ if( pShmNode->h>=0 ){
+ /* Initialize the locking parameters */
+ memset(&f, 0, sizeof(f));
+ f.l_type = lockType;
+ f.l_whence = SEEK_SET;
+ f.l_start = ofst;
+ f.l_len = n;
- rc = fcntl(pShmNode->h, F_SETLK, &f);
- rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY;
+ rc = osFcntl(pShmNode->h, F_SETLK, &f);
+ rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY;
+ }
/* Update the global lock state and do debug tracing */
#ifdef SQLITE_DEBUG
@@ -26412,12 +28720,19 @@
if( p && p->nRef==0 ){
int i;
assert( p->pInode==pFd->pInode );
- if( p->mutex ) sqlite3_mutex_free(p->mutex);
+ sqlite3_mutex_free(p->mutex);
for(i=0; i<p->nRegion; i++){
- munmap(p->apRegion[i], p->szRegion);
+ if( p->h>=0 ){
+ munmap(p->apRegion[i], p->szRegion);
+ }else{
+ sqlite3_free(p->apRegion[i]);
+ }
}
sqlite3_free(p->apRegion);
- if( p->h>=0 ) close(p->h);
+ if( p->h>=0 ){
+ robust_close(pFd, p->h, __LINE__);
+ p->h = -1;
+ }
p->pInode->pShmNode = 0;
sqlite3_free(p);
}
@@ -26451,6 +28766,12 @@
** When opening a new shared-memory file, if no other instances of that
** file are currently open, in this process or in other processes, then
** the file must be truncated to zero length or have its header cleared.
+**
+** If the original database file (pDbFd) is using the "unix-excl" VFS
+** that means that an exclusive lock is held on the database file and
+** that no other processes are able to read or write the database. In
+** that case, we do not really need shared memory. No shared memory
+** file is created. The shared memory will be simulated with heap memory.
*/
static int unixOpenSharedMemory(unixFile *pDbFd){
struct unixShm *p = 0; /* The connection to be opened */
@@ -26480,22 +28801,22 @@
** with the same permissions. The actual permissions the file is created
** with are subject to the current umask setting.
*/
- if( fstat(pDbFd->h, &sStat) ){
+ if( osFstat(pDbFd->h, &sStat) && pInode->bProcessLock==0 ){
rc = SQLITE_IOERR_FSTAT;
goto shm_open_err;
}
#ifdef SQLITE_SHM_DIRECTORY
- nShmFilename = sizeof(SQLITE_SHM_DIRECTORY) + 30;
+ nShmFilename = sizeof(SQLITE_SHM_DIRECTORY) + 31;
#else
- nShmFilename = 5 + (int)strlen(pDbFd->zPath);
+ nShmFilename = 6 + (int)strlen(pDbFd->zPath);
#endif
pShmNode = sqlite3_malloc( sizeof(*pShmNode) + nShmFilename );
if( pShmNode==0 ){
rc = SQLITE_NOMEM;
goto shm_open_err;
}
- memset(pShmNode, 0, sizeof(*pShmNode));
+ memset(pShmNode, 0, sizeof(*pShmNode)+nShmFilename);
zShmFilename = pShmNode->zFilename = (char*)&pShmNode[1];
#ifdef SQLITE_SHM_DIRECTORY
sqlite3_snprintf(nShmFilename, zShmFilename,
@@ -26503,6 +28824,7 @@
(u32)sStat.st_ino, (u32)sStat.st_dev);
#else
sqlite3_snprintf(nShmFilename, zShmFilename, "%s-shm", pDbFd->zPath);
+ sqlite3FileSuffix3(pDbFd->zPath, zShmFilename);
#endif
pShmNode->h = -1;
pDbFd->pInode->pShmNode = pShmNode;
@@ -26513,25 +28835,34 @@
goto shm_open_err;
}
- pShmNode->h = open(zShmFilename, O_RDWR|O_CREAT, (sStat.st_mode & 0777));
- if( pShmNode->h<0 ){
- rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zShmFilename);
- goto shm_open_err;
- }
-
- /* Check to see if another process is holding the dead-man switch.
- ** If not, truncate the file to zero length.
- */
- rc = SQLITE_OK;
- if( unixShmSystemLock(pShmNode, F_WRLCK, UNIX_SHM_DMS, 1)==SQLITE_OK ){
- if( robust_ftruncate(pShmNode->h, 0) ){
- rc = unixLogError(SQLITE_IOERR_SHMOPEN, "ftruncate", zShmFilename);
+ if( pInode->bProcessLock==0 ){
+ int openFlags = O_RDWR | O_CREAT;
+ if( sqlite3_uri_boolean(pDbFd->zPath, "readonly_shm", 0) ){
+ openFlags = O_RDONLY;
+ pShmNode->isReadonly = 1;
}
+ pShmNode->h = robust_open(zShmFilename, openFlags, (sStat.st_mode&0777));
+ if( pShmNode->h<0 ){
+ if( pShmNode->h<0 ){
+ rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zShmFilename);
+ goto shm_open_err;
+ }
+ }
+
+ /* Check to see if another process is holding the dead-man switch.
+ ** If not, truncate the file to zero length.
+ */
+ rc = SQLITE_OK;
+ if( unixShmSystemLock(pShmNode, F_WRLCK, UNIX_SHM_DMS, 1)==SQLITE_OK ){
+ if( robust_ftruncate(pShmNode->h, 0) ){
+ rc = unixLogError(SQLITE_IOERR_SHMOPEN, "ftruncate", zShmFilename);
+ }
+ }
+ if( rc==SQLITE_OK ){
+ rc = unixShmSystemLock(pShmNode, F_RDLCK, UNIX_SHM_DMS, 1);
+ }
+ if( rc ) goto shm_open_err;
}
- if( rc==SQLITE_OK ){
- rc = unixShmSystemLock(pShmNode, F_RDLCK, UNIX_SHM_DMS, 1);
- }
- if( rc ) goto shm_open_err;
}
/* Make the new connection a child of the unixShmNode */
@@ -26605,6 +28936,9 @@
pShmNode = p->pShmNode;
sqlite3_mutex_enter(pShmNode->mutex);
assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 );
+ assert( pShmNode->pInode==pDbFd->pInode );
+ assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 );
+ assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 );
if( pShmNode->nRegion<=iRegion ){
char **apNew; /* New apRegion[] array */
@@ -26613,27 +28947,30 @@
pShmNode->szRegion = szRegion;
- /* The requested region is not mapped into this processes address space.
- ** Check to see if it has been allocated (i.e. if the wal-index file is
- ** large enough to contain the requested region).
- */
- if( fstat(pShmNode->h, &sStat) ){
- rc = SQLITE_IOERR_SHMSIZE;
- goto shmpage_out;
- }
-
- if( sStat.st_size<nByte ){
- /* The requested memory region does not exist. If bExtend is set to
- ** false, exit early. *pp will be set to NULL and SQLITE_OK returned.
- **
- ** Alternatively, if bExtend is true, use ftruncate() to allocate
- ** the requested memory region.
+ if( pShmNode->h>=0 ){
+ /* The requested region is not mapped into this processes address space.
+ ** Check to see if it has been allocated (i.e. if the wal-index file is
+ ** large enough to contain the requested region).
*/
- if( !bExtend ) goto shmpage_out;
- if( robust_ftruncate(pShmNode->h, nByte) ){
- rc = unixLogError(SQLITE_IOERR_SHMSIZE,"ftruncate",pShmNode->zFilename);
+ if( osFstat(pShmNode->h, &sStat) ){
+ rc = SQLITE_IOERR_SHMSIZE;
goto shmpage_out;
}
+
+ if( sStat.st_size<nByte ){
+ /* The requested memory region does not exist. If bExtend is set to
+ ** false, exit early. *pp will be set to NULL and SQLITE_OK returned.
+ **
+ ** Alternatively, if bExtend is true, use ftruncate() to allocate
+ ** the requested memory region.
+ */
+ if( !bExtend ) goto shmpage_out;
+ if( robust_ftruncate(pShmNode->h, nByte) ){
+ rc = unixLogError(SQLITE_IOERR_SHMSIZE, "ftruncate",
+ pShmNode->zFilename);
+ goto shmpage_out;
+ }
+ }
}
/* Map the requested memory region into this processes address space. */
@@ -26646,12 +28983,23 @@
}
pShmNode->apRegion = apNew;
while(pShmNode->nRegion<=iRegion){
- void *pMem = mmap(0, szRegion, PROT_READ|PROT_WRITE,
- MAP_SHARED, pShmNode->h, pShmNode->nRegion*szRegion
- );
- if( pMem==MAP_FAILED ){
- rc = SQLITE_IOERR;
- goto shmpage_out;
+ void *pMem;
+ if( pShmNode->h>=0 ){
+ pMem = mmap(0, szRegion,
+ pShmNode->isReadonly ? PROT_READ : PROT_READ|PROT_WRITE,
+ MAP_SHARED, pShmNode->h, pShmNode->nRegion*szRegion
+ );
+ if( pMem==MAP_FAILED ){
+ rc = unixLogError(SQLITE_IOERR_SHMMAP, "mmap", pShmNode->zFilename);
+ goto shmpage_out;
+ }
+ }else{
+ pMem = sqlite3_malloc(szRegion);
+ if( pMem==0 ){
+ rc = SQLITE_NOMEM;
+ goto shmpage_out;
+ }
+ memset(pMem, 0, szRegion);
}
pShmNode->apRegion[pShmNode->nRegion] = pMem;
pShmNode->nRegion++;
@@ -26664,6 +29012,7 @@
}else{
*pp = 0;
}
+ if( pShmNode->isReadonly && rc==SQLITE_OK ) rc = SQLITE_READONLY;
sqlite3_mutex_leave(pShmNode->mutex);
return rc;
}
@@ -26698,6 +29047,8 @@
|| flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED)
|| flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE) );
assert( n==1 || (flags & SQLITE_SHM_EXCLUSIVE)!=0 );
+ assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 );
+ assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 );
mask = (1<<(ofst+n)) - (1<<ofst);
assert( n>1 || mask==(1<<ofst) );
@@ -26835,7 +29186,7 @@
assert( pShmNode->nRef>0 );
pShmNode->nRef--;
if( pShmNode->nRef==0 ){
- if( deleteFlag ) unlink(pShmNode->zFilename);
+ if( deleteFlag && pShmNode->h>=0 ) osUnlink(pShmNode->zFilename);
unixShmPurge(pDbFd);
}
unixLeaveMutex();
@@ -27076,7 +29427,7 @@
lockInfo.l_start = 0;
lockInfo.l_whence = SEEK_SET;
lockInfo.l_type = F_RDLCK;
- if( fcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) {
+ if( osFcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) {
if( strcmp(fsInfo.f_fstypename, "nfs")==0 ){
return &nfsIoMethods;
} else {
@@ -27118,7 +29469,7 @@
lockInfo.l_start = 0;
lockInfo.l_whence = SEEK_SET;
lockInfo.l_type = F_RDLCK;
- if( fcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) {
+ if( osFcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) {
return &posixIoMethods;
}else{
return &semIoMethods;
@@ -27148,11 +29499,9 @@
static int fillInUnixFile(
sqlite3_vfs *pVfs, /* Pointer to vfs object */
int h, /* Open file descriptor of file being opened */
- int dirfd, /* Directory file descriptor */
sqlite3_file *pId, /* Write to the unixFile structure here */
const char *zFilename, /* Name of the file being opened */
- int noLock, /* Omit locking if true */
- int isDelete /* Delete on close if true */
+ int ctrlFlags /* Zero or more UNIXFILE_* values */
){
const sqlite3_io_methods *pLockingStyle;
unixFile *pNew = (unixFile *)pId;
@@ -27160,11 +29509,6 @@
assert( pNew->pInode==NULL );
- /* Parameter isDelete is only used on vxworks. Express this explicitly
- ** here to prevent compiler warnings about unused parameters.
- */
- UNUSED_PARAMETER(isDelete);
-
/* Usually the path zFilename should not be a relative pathname. The
** exception is when opening the proxy "conch" file in builds that
** include the special Apple locking styles.
@@ -27176,21 +29520,31 @@
assert( zFilename==0 || zFilename[0]=='/' );
#endif
+ /* No locking occurs in temporary files */
+ assert( zFilename!=0 || (ctrlFlags & UNIXFILE_NOLOCK)!=0 );
+
OSTRACE(("OPEN %-3d %s\n", h, zFilename));
pNew->h = h;
- pNew->dirfd = dirfd;
- pNew->fileFlags = 0;
+ pNew->pVfs = pVfs;
pNew->zPath = zFilename;
+ pNew->ctrlFlags = (u8)ctrlFlags;
+ if( sqlite3_uri_boolean(((ctrlFlags & UNIXFILE_URI) ? zFilename : 0),
+ "psow", SQLITE_POWERSAFE_OVERWRITE) ){
+ pNew->ctrlFlags |= UNIXFILE_PSOW;
+ }
+ if( memcmp(pVfs->zName,"unix-excl",10)==0 ){
+ pNew->ctrlFlags |= UNIXFILE_EXCL;
+ }
#if OS_VXWORKS
pNew->pId = vxworksFindFileId(zFilename);
if( pNew->pId==0 ){
- noLock = 1;
+ ctrlFlags |= UNIXFILE_NOLOCK;
rc = SQLITE_NOMEM;
}
#endif
- if( noLock ){
+ if( ctrlFlags & UNIXFILE_NOLOCK ){
pLockingStyle = &nolockIoMethods;
}else{
pLockingStyle = (**(finder_type*)pVfs->pAppData)(zFilename, pNew);
@@ -27228,7 +29582,7 @@
** implicit assumption here is that if fstat() fails, things are in
** such bad shape that dropping a lock or two doesn't matter much.
*/
- close(h);
+ robust_close(pNew, h, __LINE__);
h = -1;
}
unixLeaveMutex();
@@ -27254,7 +29608,7 @@
rc = findInodeInfo(pNew, &pNew->pInode);
if( rc!=SQLITE_OK ){
sqlite3_free(pNew->lockingContext);
- close(h);
+ robust_close(pNew, h, __LINE__);
h = -1;
}
unixLeaveMutex();
@@ -27268,6 +29622,7 @@
*/
char *zLockFile;
int nFilename;
+ assert( zFilename!=0 );
nFilename = (int)strlen(zFilename) + 6;
zLockFile = (char *)sqlite3_malloc(nFilename);
if( zLockFile==0 ){
@@ -27305,16 +29660,15 @@
pNew->lastErrno = 0;
#if OS_VXWORKS
if( rc!=SQLITE_OK ){
- if( h>=0 ) close(h);
+ if( h>=0 ) robust_close(pNew, h, __LINE__);
h = -1;
- unlink(zFilename);
+ osUnlink(zFilename);
isDelete = 0;
}
- pNew->isDelete = isDelete;
+ if( isDelete ) pNew->ctrlFlags |= UNIXFILE_DELETE;
#endif
if( rc!=SQLITE_OK ){
- if( dirfd>=0 ) close(dirfd); /* silent leak if fail, already in error */
- if( h>=0 ) close(h);
+ if( h>=0 ) robust_close(pNew, h, __LINE__);
}else{
pNew->pMethod = pLockingStyle;
OpenCounter(+1);
@@ -27323,37 +29677,6 @@
}
/*
-** Open a file descriptor to the directory containing file zFilename.
-** If successful, *pFd is set to the opened file descriptor and
-** SQLITE_OK is returned. If an error occurs, either SQLITE_NOMEM
-** or SQLITE_CANTOPEN is returned and *pFd is set to an undefined
-** value.
-**
-** If SQLITE_OK is returned, the caller is responsible for closing
-** the file descriptor *pFd using close().
-*/
-static int openDirectory(const char *zFilename, int *pFd){
- int ii;
- int fd = -1;
- char zDirname[MAX_PATHNAME+1];
-
- sqlite3_snprintf(MAX_PATHNAME, zDirname, "%s", zFilename);
- for(ii=(int)strlen(zDirname); ii>1 && zDirname[ii]!='/'; ii--);
- if( ii>0 ){
- zDirname[ii] = '\0';
- fd = open(zDirname, O_RDONLY|O_BINARY, 0);
- if( fd>=0 ){
-#ifdef FD_CLOEXEC
- fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0) | FD_CLOEXEC);
-#endif
- OSTRACE(("OPENDIR %-3d %s\n", fd, zDirname));
- }
- }
- *pFd = fd;
- return (fd>=0?SQLITE_OK:unixLogError(SQLITE_CANTOPEN_BKPT, "open", zDirname));
-}
-
-/*
** Return the name of a directory in which to put temporary files.
** If no suitable temporary file directory can be found, return NULL.
*/
@@ -27374,9 +29697,9 @@
if( !azDirs[1] ) azDirs[1] = getenv("TMPDIR");
for(i=0; i<sizeof(azDirs)/sizeof(azDirs[0]); zDir=azDirs[i++]){
if( zDir==0 ) continue;
- if( stat(zDir, &buf) ) continue;
+ if( osStat(zDir, &buf) ) continue;
if( !S_ISDIR(buf.st_mode) ) continue;
- if( access(zDir, 07) ) continue;
+ if( osAccess(zDir, 07) ) continue;
break;
}
return zDir;
@@ -27407,19 +29730,20 @@
/* Check that the output buffer is large enough for the temporary file
** name. If it is not, return SQLITE_ERROR.
*/
- if( (strlen(zDir) + strlen(SQLITE_TEMP_FILE_PREFIX) + 17) >= (size_t)nBuf ){
+ if( (strlen(zDir) + strlen(SQLITE_TEMP_FILE_PREFIX) + 18) >= (size_t)nBuf ){
return SQLITE_ERROR;
}
do{
- sqlite3_snprintf(nBuf-17, zBuf, "%s/"SQLITE_TEMP_FILE_PREFIX, zDir);
+ sqlite3_snprintf(nBuf-18, zBuf, "%s/"SQLITE_TEMP_FILE_PREFIX, zDir);
j = (int)strlen(zBuf);
sqlite3_randomness(15, &zBuf[j]);
for(i=0; i<15; i++, j++){
zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
}
zBuf[j] = 0;
- }while( access(zBuf,0)==0 );
+ zBuf[j+1] = 0;
+ }while( osAccess(zBuf,0)==0 );
return SQLITE_OK;
}
@@ -27467,7 +29791,7 @@
**
** Even if a subsequent open() call does succeed, the consequences of
** not searching for a resusable file descriptor are not dire. */
- if( 0==stat(zPath, &sStat) ){
+ if( 0==osStat(zPath, &sStat) ){
unixInodeInfo *pInode;
unixEnterMutex();
@@ -27507,6 +29831,11 @@
** corresponding database file and sets *pMode to this value. Whenever
** possible, WAL and journal files are created using the same permissions
** as the associated database file.
+**
+** If the SQLITE_ENABLE_8_3_NAMES option is enabled, then the
+** original filename is unavailable. But 8_3_NAMES is only used for
+** FAT filesystems and permissions do not matter there, so just use
+** the default permissions.
*/
static int findCreateFileMode(
const char *zPath, /* Path of file (possibly) being created */
@@ -27514,6 +29843,7 @@
mode_t *pMode /* OUT: Permissions to open file with */
){
int rc = SQLITE_OK; /* Return Code */
+ *pMode = SQLITE_DEFAULT_FILE_PERMISSIONS;
if( flags & (SQLITE_OPEN_WAL|SQLITE_OPEN_MAIN_JOURNAL) ){
char zDb[MAX_PATHNAME+1]; /* Database file path */
int nDb; /* Number of valid bytes in zDb */
@@ -27525,27 +29855,33 @@
**
** "<path to db>-journal"
** "<path to db>-wal"
- ** "<path to db>-journal-NNNN"
- ** "<path to db>-wal-NNNN"
+ ** "<path to db>-journalNN"
+ ** "<path to db>-walNN"
**
- ** where NNNN is a 4 digit decimal number. The NNNN naming schemes are
+ ** where NN is a decimal number. The NN naming schemes are
** used by the test_multiplex.c module.
*/
nDb = sqlite3Strlen30(zPath) - 1;
- while( nDb>0 && zPath[nDb]!='l' ) nDb--;
- nDb -= ((flags & SQLITE_OPEN_WAL) ? 3 : 7);
+#ifdef SQLITE_ENABLE_8_3_NAMES
+ while( nDb>0 && sqlite3Isalnum(zPath[nDb]) ) nDb--;
+ if( nDb==0 || zPath[nDb]!='-' ) return SQLITE_OK;
+#else
+ while( zPath[nDb]!='-' ){
+ assert( nDb>0 );
+ assert( zPath[nDb]!='\n' );
+ nDb--;
+ }
+#endif
memcpy(zDb, zPath, nDb);
zDb[nDb] = '\0';
- if( 0==stat(zDb, &sStat) ){
+ if( 0==osStat(zDb, &sStat) ){
*pMode = sStat.st_mode & 0777;
}else{
rc = SQLITE_IOERR_FSTAT;
}
}else if( flags & SQLITE_OPEN_DELETEONCLOSE ){
*pMode = 0600;
- }else{
- *pMode = SQLITE_DEFAULT_FILE_PERMISSIONS;
}
return rc;
}
@@ -27581,11 +29917,11 @@
){
unixFile *p = (unixFile *)pFile;
int fd = -1; /* File descriptor returned by open() */
- int dirfd = -1; /* Directory file descriptor */
int openFlags = 0; /* Flags to pass to open() */
int eType = flags&0xFFFFFF00; /* Type of file to open */
int noLock; /* True to omit locking primitives */
int rc = SQLITE_OK; /* Function Return Code */
+ int ctrlFlags = 0; /* UNIXFILE_* flags */
int isExclusive = (flags & SQLITE_OPEN_EXCLUSIVE);
int isDelete = (flags & SQLITE_OPEN_DELETEONCLOSE);
@@ -27595,12 +29931,15 @@
#if SQLITE_ENABLE_LOCKING_STYLE
int isAutoProxy = (flags & SQLITE_OPEN_AUTOPROXY);
#endif
+#if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE
+ struct statfs fsInfo;
+#endif
/* If creating a master or main-file journal, this function will open
** a file-descriptor on the directory too. The first time unixSync()
** is called the directory file descriptor will be fsync()ed and close()d.
*/
- int isOpenDirectory = (isCreate && (
+ int syncDir = (isCreate && (
eType==SQLITE_OPEN_MASTER_JOURNAL
|| eType==SQLITE_OPEN_MAIN_JOURNAL
|| eType==SQLITE_OPEN_WAL
@@ -27609,7 +29948,7 @@
/* If argument zPath is a NULL pointer, this function is required to open
** a temporary file. Use this buffer to store the file name in.
*/
- char zTmpname[MAX_PATHNAME+1];
+ char zTmpname[MAX_PATHNAME+2];
const char *zName = zPath;
/* Check the following statements are true:
@@ -27652,14 +29991,24 @@
}
}
p->pUnused = pUnused;
+
+ /* Database filenames are double-zero terminated if they are not
+ ** URIs with parameters. Hence, they can always be passed into
+ ** sqlite3_uri_parameter(). */
+ assert( (flags & SQLITE_OPEN_URI) || zName[strlen(zName)+1]==0 );
+
}else if( !zName ){
/* If zName is NULL, the upper layer is requesting a temp file. */
- assert(isDelete && !isOpenDirectory);
- rc = unixGetTempname(MAX_PATHNAME+1, zTmpname);
+ assert(isDelete && !syncDir);
+ rc = unixGetTempname(MAX_PATHNAME+2, zTmpname);
if( rc!=SQLITE_OK ){
return rc;
}
zName = zTmpname;
+
+ /* Generated temporary filenames are always double-zero terminated
+ ** for use by sqlite3_uri_parameter(). */
+ assert( zName[strlen(zName)+1]==0 );
}
/* Determine the value of the flags parameter passed to POSIX function
@@ -27680,7 +30029,7 @@
assert( eType==SQLITE_OPEN_WAL || eType==SQLITE_OPEN_MAIN_JOURNAL );
return rc;
}
- fd = open(zName, openFlags, openMode);
+ fd = robust_open(zName, openFlags, openMode);
OSTRACE(("OPENX %-3d %s 0%o\n", fd, zName, openFlags));
if( fd<0 && errno!=EISDIR && isReadWrite && !isExclusive ){
/* Failed to open the file for read/write access. Try read-only. */
@@ -27688,7 +30037,8 @@
openFlags &= ~(O_RDWR|O_CREAT);
flags |= SQLITE_OPEN_READONLY;
openFlags |= O_RDONLY;
- fd = open(zName, openFlags, openMode);
+ isReadonly = 1;
+ fd = robust_open(zName, openFlags, openMode);
}
if( fd<0 ){
rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zName);
@@ -27709,7 +30059,7 @@
#if OS_VXWORKS
zPath = zName;
#else
- unlink(zName);
+ osUnlink(zName);
#endif
}
#if SQLITE_ENABLE_LOCKING_STYLE
@@ -27718,39 +30068,31 @@
}
#endif
- if( isOpenDirectory ){
- rc = openDirectory(zPath, &dirfd);
- if( rc!=SQLITE_OK ){
- /* It is safe to close fd at this point, because it is guaranteed not
- ** to be open on a database file. If it were open on a database file,
- ** it would not be safe to close as this would release any locks held
- ** on the file by this process. */
- assert( eType!=SQLITE_OPEN_MAIN_DB );
- close(fd); /* silently leak if fail, already in error */
- goto open_finished;
- }
- }
-
#ifdef FD_CLOEXEC
- fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0) | FD_CLOEXEC);
+ osFcntl(fd, F_SETFD, osFcntl(fd, F_GETFD, 0) | FD_CLOEXEC);
#endif
noLock = eType!=SQLITE_OPEN_MAIN_DB;
#if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE
- struct statfs fsInfo;
if( fstatfs(fd, &fsInfo) == -1 ){
((unixFile*)pFile)->lastErrno = errno;
- if( dirfd>=0 ) close(dirfd); /* silently leak if fail, in error */
- close(fd); /* silently leak if fail, in error */
+ robust_close(p, fd, __LINE__);
return SQLITE_IOERR_ACCESS;
}
if (0 == strncmp("msdos", fsInfo.f_fstypename, 5)) {
((unixFile*)pFile)->fsFlags |= SQLITE_FSFLAGS_IS_MSDOS;
}
#endif
-
+
+ /* Set up appropriate ctrlFlags */
+ if( isDelete ) ctrlFlags |= UNIXFILE_DELETE;
+ if( isReadonly ) ctrlFlags |= UNIXFILE_RDONLY;
+ if( noLock ) ctrlFlags |= UNIXFILE_NOLOCK;
+ if( syncDir ) ctrlFlags |= UNIXFILE_DIRSYNC;
+ if( flags & SQLITE_OPEN_URI ) ctrlFlags |= UNIXFILE_URI;
+
#if SQLITE_ENABLE_LOCKING_STYLE
#if SQLITE_PREFER_PROXY_LOCKING
isAutoProxy = 1;
@@ -27764,7 +30106,6 @@
if( envforce!=NULL ){
useProxy = atoi(envforce)>0;
}else{
- struct statfs fsInfo;
if( statfs(zPath, &fsInfo) == -1 ){
/* In theory, the close(fd) call is sub-optimal. If the file opened
** with fd is a database file, and there are other connections open
@@ -27774,17 +30115,14 @@
** not while other file descriptors opened by the same process on
** the same file are working. */
p->lastErrno = errno;
- if( dirfd>=0 ){
- close(dirfd); /* silently leak if fail, in error */
- }
- close(fd); /* silently leak if fail, in error */
+ robust_close(p, fd, __LINE__);
rc = SQLITE_IOERR_ACCESS;
goto open_finished;
}
useProxy = !(fsInfo.f_flags&MNT_LOCAL);
}
if( useProxy ){
- rc = fillInUnixFile(pVfs, fd, dirfd, pFile, zPath, noLock, isDelete);
+ rc = fillInUnixFile(pVfs, fd, pFile, zPath, ctrlFlags);
if( rc==SQLITE_OK ){
rc = proxyTransformUnixFile((unixFile*)pFile, ":auto:");
if( rc!=SQLITE_OK ){
@@ -27801,7 +30139,8 @@
}
#endif
- rc = fillInUnixFile(pVfs, fd, dirfd, pFile, zPath, noLock, isDelete);
+ rc = fillInUnixFile(pVfs, fd, pFile, zPath, ctrlFlags);
+
open_finished:
if( rc!=SQLITE_OK ){
sqlite3_free(p->pUnused);
@@ -27822,13 +30161,13 @@
int rc = SQLITE_OK;
UNUSED_PARAMETER(NotUsed);
SimulateIOError(return SQLITE_IOERR_DELETE);
- if( unlink(zPath)==(-1) && errno!=ENOENT ){
+ if( osUnlink(zPath)==(-1) && errno!=ENOENT ){
return unixLogError(SQLITE_IOERR_DELETE, "unlink", zPath);
}
#ifndef SQLITE_DISABLE_DIRSYNC
- if( dirSync ){
+ if( (dirSync & 1)!=0 ){
int fd;
- rc = openDirectory(zPath, &fd);
+ rc = osOpenDirectory(zPath, &fd);
if( rc==SQLITE_OK ){
#if OS_VXWORKS
if( fsync(fd)==-1 )
@@ -27838,9 +30177,9 @@
{
rc = unixLogError(SQLITE_IOERR_DIR_FSYNC, "fsync", zPath);
}
- if( close(fd)&&!rc ){
- rc = unixLogError(SQLITE_IOERR_DIR_CLOSE, "close", zPath);
- }
+ robust_close(0, fd, __LINE__);
+ }else if( rc==SQLITE_CANTOPEN ){
+ rc = SQLITE_OK;
}
}
#endif
@@ -27880,10 +30219,10 @@
default:
assert(!"Invalid flags argument");
}
- *pResOut = (access(zPath, amode)==0);
+ *pResOut = (osAccess(zPath, amode)==0);
if( flags==SQLITE_ACCESS_EXISTS && *pResOut ){
struct stat buf;
- if( 0==stat(zPath, &buf) && buf.st_size==0 ){
+ if( 0==osStat(zPath, &buf) && buf.st_size==0 ){
*pResOut = 0;
}
}
@@ -27922,7 +30261,7 @@
sqlite3_snprintf(nOut, zOut, "%s", zPath);
}else{
int nCwd;
- if( getcwd(zOut, nOut-1)==0 ){
+ if( osGetcwd(zOut, nOut-1)==0 ){
return unixLogError(SQLITE_CANTOPEN_BKPT, "getcwd", zPath);
}
nCwd = (int)strlen(zOut);
@@ -28017,7 +30356,7 @@
#if !defined(SQLITE_TEST)
{
int pid, fd;
- fd = open("/dev/urandom", O_RDONLY);
+ fd = robust_open("/dev/urandom", O_RDONLY, 0);
if( fd<0 ){
time_t t;
time(&t);
@@ -28027,8 +30366,8 @@
assert( sizeof(t)+sizeof(pid)<=(size_t)nBuf );
nBuf = sizeof(t) + sizeof(pid);
}else{
- do{ nBuf = read(fd, zBuf, nBuf); }while( nBuf<0 && errno==EINTR );
- close(fd);
+ do{ nBuf = osRead(fd, zBuf, nBuf); }while( nBuf<0 && errno==EINTR );
+ robust_close(0, fd, __LINE__);
}
}
#endif
@@ -28081,10 +30420,12 @@
** epoch of noon in Greenwich on November 24, 4714 B.C according to the
** proleptic Gregorian calendar.
**
-** On success, return 0. Return 1 if the time and date cannot be found.
+** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date
+** cannot be found.
*/
static int unixCurrentTimeInt64(sqlite3_vfs *NotUsed, sqlite3_int64 *piNow){
static const sqlite3_int64 unixEpoch = 24405875*(sqlite3_int64)8640000;
+ int rc = SQLITE_OK;
#if defined(NO_GETTOD)
time_t t;
time(&t);
@@ -28095,8 +30436,11 @@
*piNow = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_nsec/1000000;
#else
struct timeval sNow;
- gettimeofday(&sNow, 0);
- *piNow = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_usec/1000;
+ if( gettimeofday(&sNow, 0)==0 ){
+ *piNow = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_usec/1000;
+ }else{
+ rc = SQLITE_ERROR;
+ }
#endif
#ifdef SQLITE_TEST
@@ -28105,7 +30449,7 @@
}
#endif
UNUSED_PARAMETER(NotUsed);
- return 0;
+ return rc;
}
/*
@@ -28114,11 +30458,12 @@
** return 0. Return 1 if the time and date cannot be found.
*/
static int unixCurrentTime(sqlite3_vfs *NotUsed, double *prNow){
- sqlite3_int64 i;
+ sqlite3_int64 i = 0;
+ int rc;
UNUSED_PARAMETER(NotUsed);
- unixCurrentTimeInt64(0, &i);
+ rc = unixCurrentTimeInt64(0, &i);
*prNow = i/86400000.0;
- return 0;
+ return rc;
}
/*
@@ -28371,7 +30716,7 @@
if( i-start>2 || (i-start==1 && buf[start] != '.' && buf[start] != '/')
|| (i-start==2 && buf[start] != '.' && buf[start+1] != '.') ){
buf[i]='\0';
- if( mkdir(buf, SQLITE_DEFAULT_PROXYDIR_PERMISSIONS) ){
+ if( osMkdir(buf, SQLITE_DEFAULT_PROXYDIR_PERMISSIONS) ){
int err=errno;
if( err!=EEXIST ) {
OSTRACE(("CREATELOCKPATH FAILED creating %s, "
@@ -28402,7 +30747,6 @@
int islockfile /* if non zero missing dirs will be created */
) {
int fd = -1;
- int dirfd = -1;
unixFile *pNew;
int rc = SQLITE_OK;
int openFlags = O_RDWR | O_CREAT;
@@ -28426,17 +30770,17 @@
}
}
if( fd<0 ){
- fd = open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS);
+ fd = robust_open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS);
terrno = errno;
if( fd<0 && errno==ENOENT && islockfile ){
if( proxyCreateLockPath(path) == SQLITE_OK ){
- fd = open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS);
+ fd = robust_open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS);
}
}
}
if( fd<0 ){
openFlags = O_RDONLY;
- fd = open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS);
+ fd = robust_open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS);
terrno = errno;
}
if( fd<0 ){
@@ -28460,18 +30804,20 @@
}
memset(pNew, 0, sizeof(unixFile));
pNew->openFlags = openFlags;
+ memset(&dummyVfs, 0, sizeof(dummyVfs));
dummyVfs.pAppData = (void*)&autolockIoFinder;
+ dummyVfs.zName = "dummy";
pUnused->fd = fd;
pUnused->flags = openFlags;
pNew->pUnused = pUnused;
- rc = fillInUnixFile(&dummyVfs, fd, dirfd, (sqlite3_file*)pNew, path, 0, 0);
+ rc = fillInUnixFile(&dummyVfs, fd, (sqlite3_file*)pNew, path, 0);
if( rc==SQLITE_OK ){
*ppFile = pNew;
return SQLITE_OK;
}
end_create_proxy:
- close(fd); /* silently leak fd if error, we're already in error */
+ robust_close(pNew, fd, __LINE__);
sqlite3_free(pNew);
sqlite3_free(pUnused);
return rc;
@@ -28491,19 +30837,22 @@
** bytes of writable memory.
*/
static int proxyGetHostID(unsigned char *pHostID, int *pError){
- struct timespec timeout = {1, 0}; /* 1 sec timeout */
-
assert(PROXY_HOSTIDLEN == sizeof(uuid_t));
memset(pHostID, 0, PROXY_HOSTIDLEN);
#if defined(__MAX_OS_X_VERSION_MIN_REQUIRED)\
&& __MAC_OS_X_VERSION_MIN_REQUIRED<1050
- if( gethostuuid(pHostID, &timeout) ){
- int err = errno;
- if( pError ){
- *pError = err;
+ {
+ static const struct timespec timeout = {1, 0}; /* 1 sec timeout */
+ if( gethostuuid(pHostID, &timeout) ){
+ int err = errno;
+ if( pError ){
+ *pError = err;
+ }
+ return SQLITE_IOERR;
}
- return SQLITE_IOERR;
}
+#else
+ UNUSED_PARAMETER(pError);
#endif
#ifdef SQLITE_TEST
/* simulate multiple hosts by creating unique hostid file paths */
@@ -28549,18 +30898,19 @@
goto end_breaklock;
}
/* read the conch content */
- readLen = pread(conchFile->h, buf, PROXY_MAXCONCHLEN, 0);
+ readLen = osPread(conchFile->h, buf, PROXY_MAXCONCHLEN, 0);
if( readLen<PROXY_PATHINDEX ){
sqlite3_snprintf(sizeof(errmsg),errmsg,"read error (len %d)",(int)readLen);
goto end_breaklock;
}
/* write it out to the temporary break file */
- fd = open(tPath, (O_RDWR|O_CREAT|O_EXCL), SQLITE_DEFAULT_FILE_PERMISSIONS);
+ fd = robust_open(tPath, (O_RDWR|O_CREAT|O_EXCL),
+ SQLITE_DEFAULT_FILE_PERMISSIONS);
if( fd<0 ){
sqlite3_snprintf(sizeof(errmsg), errmsg, "create failed (%d)", errno);
goto end_breaklock;
}
- if( pwrite(fd, buf, readLen, 0) != (ssize_t)readLen ){
+ if( osPwrite(fd, buf, readLen, 0) != (ssize_t)readLen ){
sqlite3_snprintf(sizeof(errmsg), errmsg, "write failed (%d)", errno);
goto end_breaklock;
}
@@ -28570,15 +30920,15 @@
}
rc = 0;
fprintf(stderr, "broke stale lock on %s\n", cPath);
- close(conchFile->h);
+ robust_close(pFile, conchFile->h, __LINE__);
conchFile->h = fd;
conchFile->openFlags = O_RDWR | O_CREAT;
end_breaklock:
if( rc ){
if( fd>=0 ){
- unlink(tPath);
- close(fd);
+ osUnlink(tPath);
+ robust_close(pFile, fd, __LINE__);
}
fprintf(stderr, "failed to break stale lock on %s, %s\n", cPath, errmsg);
}
@@ -28595,6 +30945,7 @@
int nTries = 0;
struct timespec conchModTime;
+ memset(&conchModTime, 0, sizeof(conchModTime));
do {
rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, lockType);
nTries ++;
@@ -28606,7 +30957,7 @@
* 3rd try: break the lock unless the mod time has changed.
*/
struct stat buf;
- if( fstat(conchFile->h, &buf) ){
+ if( osFstat(conchFile->h, &buf) ){
pFile->lastErrno = errno;
return SQLITE_IOERR_LOCK;
}
@@ -28625,7 +30976,7 @@
if( nTries==2 ){
char tBuf[PROXY_MAXCONCHLEN];
- int len = pread(conchFile->h, tBuf, PROXY_MAXCONCHLEN, 0);
+ int len = osPread(conchFile->h, tBuf, PROXY_MAXCONCHLEN, 0);
if( len<0 ){
pFile->lastErrno = errno;
return SQLITE_IOERR_LOCK;
@@ -28795,17 +31146,16 @@
*/
if( rc==SQLITE_OK && createConch ){
struct stat buf;
- int rc;
- int err = fstat(pFile->h, &buf);
+ int err = osFstat(pFile->h, &buf);
if( err==0 ){
mode_t cmode = buf.st_mode&(S_IRUSR|S_IWUSR | S_IRGRP|S_IWGRP |
S_IROTH|S_IWOTH);
/* try to match the database file R/W permissions, ignore failure */
#ifndef SQLITE_PROXY_DEBUG
- fchmod(conchFile->h, cmode);
+ osFchmod(conchFile->h, cmode);
#else
do{
- rc = fchmod(conchFile->h, cmode);
+ rc = osFchmod(conchFile->h, cmode);
}while( rc==(-1) && errno==EINTR );
if( rc!=0 ){
int code = errno;
@@ -28827,18 +31177,12 @@
end_takeconch:
OSTRACE(("TRANSPROXY: CLOSE %d\n", pFile->h));
if( rc==SQLITE_OK && pFile->openFlags ){
+ int fd;
if( pFile->h>=0 ){
-#ifdef STRICT_CLOSE_ERROR
- if( close(pFile->h) ){
- pFile->lastErrno = errno;
- return SQLITE_IOERR_CLOSE;
- }
-#else
- close(pFile->h); /* silently leak fd if fail */
-#endif
+ robust_close(pFile, pFile->h, __LINE__);
}
pFile->h = -1;
- int fd = open(pCtx->dbPath, pFile->openFlags,
+ fd = robust_open(pCtx->dbPath, pFile->openFlags,
SQLITE_DEFAULT_FILE_PERMISSIONS);
OSTRACE(("TRANSPROXY: OPEN %d\n", fd));
if( fd>=0 ){
@@ -29064,7 +31408,7 @@
struct stat conchInfo;
int goLockless = 0;
- if( stat(pCtx->conchFilePath, &conchInfo) == -1 ) {
+ if( osStat(pCtx->conchFilePath, &conchInfo) == -1 ) {
int err = errno;
if( (err==ENOENT) && (statfs(dbPath, &fsInfo) != -1) ){
goLockless = (fsInfo.f_flags&MNT_RDONLY) == MNT_RDONLY;
@@ -29349,7 +31693,7 @@
** that filesystem time.
*/
#define UNIXVFS(VFSNAME, FINDER) { \
- 2, /* iVersion */ \
+ 3, /* iVersion */ \
sizeof(unixFile), /* szOsFile */ \
MAX_PATHNAME, /* mxPathname */ \
0, /* pNext */ \
@@ -29368,6 +31712,9 @@
unixCurrentTime, /* xCurrentTime */ \
unixGetLastError, /* xGetLastError */ \
unixCurrentTimeInt64, /* xCurrentTimeInt64 */ \
+ unixSetSystemCall, /* xSetSystemCall */ \
+ unixGetSystemCall, /* xGetSystemCall */ \
+ unixNextSystemCall, /* xNextSystemCall */ \
}
/*
@@ -29385,6 +31732,7 @@
#endif
UNIXVFS("unix-none", nolockIoFinder ),
UNIXVFS("unix-dotfile", dotlockIoFinder ),
+ UNIXVFS("unix-excl", posixIoFinder ),
#if OS_VXWORKS
UNIXVFS("unix-namedsem", semIoFinder ),
#endif
@@ -29402,6 +31750,10 @@
};
unsigned int i; /* Loop counter */
+ /* Double-check that the aSyscall[] array has been constructed
+ ** correctly. See ticket [bb3a86e890c8e96ab] */
+ assert( ArraySize(aSyscall)==20 );
+
/* Register all VFSes defined in the aVfs[] array */
for(i=0; i<(sizeof(aVfs)/sizeof(sqlite3_vfs)); i++){
sqlite3_vfs_register(&aVfs[i], i==0);
@@ -29436,51 +31788,15 @@
**
******************************************************************************
**
-** This file contains code that is specific to windows.
+** This file contains code that is specific to Windows.
*/
-#if SQLITE_OS_WIN /* This file is used for windows only */
-
-
-/*
-** A Note About Memory Allocation:
-**
-** This driver uses malloc()/free() directly rather than going through
-** the SQLite-wrappers sqlite3_malloc()/sqlite3_free(). Those wrappers
-** are designed for use on embedded systems where memory is scarce and
-** malloc failures happen frequently. Win32 does not typically run on
-** embedded systems, and when it does the developers normally have bigger
-** problems to worry about than running out of memory. So there is not
-** a compelling need to use the wrappers.
-**
-** But there is a good reason to not use the wrappers. If we use the
-** wrappers then we will get simulated malloc() failures within this
-** driver. And that causes all kinds of problems for our tests. We
-** could enhance SQLite to deal with simulated malloc failures within
-** the OS driver, but the code to deal with those failure would not
-** be exercised on Linux (which does not need to malloc() in the driver)
-** and so we would have difficulty writing coverage tests for that
-** code. Better to leave the code out, we think.
-**
-** The point of this discussion is as follows: When creating a new
-** OS layer for an embedded system, if you use this file as an example,
-** avoid the use of malloc()/free(). Those routines work ok on windows
-** desktops but not so well in embedded systems.
-*/
-
-#include <winbase.h>
+#if SQLITE_OS_WIN /* This file is used for Windows only */
#ifdef __CYGWIN__
# include <sys/cygwin.h>
#endif
/*
-** Macros used to determine whether or not to use threads.
-*/
-#if defined(THREADSAFE) && THREADSAFE
-# define SQLITE_W32_THREADS 1
-#endif
-
-/*
** Include code that is common to all os_*.c files
*/
/************** Include os_common.h in the middle of os_win.c ****************/
@@ -29516,11 +31832,14 @@
# error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead."
#endif
-#ifdef SQLITE_DEBUG
-SQLITE_PRIVATE int sqlite3OSTrace = 0;
-#define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X
+#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG)
+# ifndef SQLITE_DEBUG_OS_TRACE
+# define SQLITE_DEBUG_OS_TRACE 0
+# endif
+ int sqlite3OSTrace = SQLITE_DEBUG_OS_TRACE;
+# define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X
#else
-#define OSTRACE(X)
+# define OSTRACE(X)
#endif
/*
@@ -29691,21 +32010,12 @@
/************** Continuing where we left off in os_win.c *********************/
/*
-** Some microsoft compilers lack this definition.
+** Some Microsoft compilers lack this definition.
*/
#ifndef INVALID_FILE_ATTRIBUTES
# define INVALID_FILE_ATTRIBUTES ((DWORD)-1)
#endif
-/*
-** Determine if we are dealing with WindowsCE - which has a much
-** reduced API.
-*/
-#if SQLITE_OS_WINCE
-# define AreFileApisANSI() 1
-# define FormatMessageW(a,b,c,d,e,f,g) 0
-#endif
-
/* Forward references */
typedef struct winShm winShm; /* A connection to shared-memory */
typedef struct winShmNode winShmNode; /* A region of shared-memory */
@@ -29732,15 +32042,15 @@
const sqlite3_io_methods *pMethod; /*** Must be first ***/
sqlite3_vfs *pVfs; /* The VFS used to open this file */
HANDLE h; /* Handle for accessing the file */
- unsigned char locktype; /* Type of lock currently held on this file */
+ u8 locktype; /* Type of lock currently held on this file */
short sharedLockByte; /* Randomly chosen byte used as a shared lock */
+ u8 ctrlFlags; /* Flags. See WINFILE_* below */
DWORD lastErrno; /* The Windows errno from the last I/O error */
- DWORD sectorSize; /* Sector size of the device file is on */
winShm *pShm; /* Instance of shared memory on this file */
const char *zPath; /* Full pathname of this file */
int szChunk; /* Chunk size configured by FCNTL_CHUNK_SIZE */
#if SQLITE_OS_WINCE
- WCHAR *zDeleteOnClose; /* Name of file to delete when closing */
+ LPWSTR zDeleteOnClose; /* Name of file to delete when closing */
HANDLE hMutex; /* Mutex used to control access to shared lock */
HANDLE hShared; /* Shared memory segment used for locking */
winceLock local; /* Locks obtained by this instance of winFile */
@@ -29749,20 +32059,89 @@
};
/*
-** Forward prototypes.
+** Allowed values for winFile.ctrlFlags
*/
-static int getSectorSize(
- sqlite3_vfs *pVfs,
- const char *zRelative /* UTF-8 file name */
-);
+#define WINFILE_PERSIST_WAL 0x04 /* Persistent WAL mode */
+#define WINFILE_PSOW 0x10 /* SQLITE_IOCAP_POWERSAFE_OVERWRITE */
+
+/*
+ * If compiled with SQLITE_WIN32_MALLOC on Windows, we will use the
+ * various Win32 API heap functions instead of our own.
+ */
+#ifdef SQLITE_WIN32_MALLOC
+/*
+ * The initial size of the Win32-specific heap. This value may be zero.
+ */
+#ifndef SQLITE_WIN32_HEAP_INIT_SIZE
+# define SQLITE_WIN32_HEAP_INIT_SIZE ((SQLITE_DEFAULT_CACHE_SIZE) * \
+ (SQLITE_DEFAULT_PAGE_SIZE) + 4194304)
+#endif
+
+/*
+ * The maximum size of the Win32-specific heap. This value may be zero.
+ */
+#ifndef SQLITE_WIN32_HEAP_MAX_SIZE
+# define SQLITE_WIN32_HEAP_MAX_SIZE (0)
+#endif
+
+/*
+ * The extra flags to use in calls to the Win32 heap APIs. This value may be
+ * zero for the default behavior.
+ */
+#ifndef SQLITE_WIN32_HEAP_FLAGS
+# define SQLITE_WIN32_HEAP_FLAGS (0)
+#endif
+
+/*
+** The winMemData structure stores information required by the Win32-specific
+** sqlite3_mem_methods implementation.
+*/
+typedef struct winMemData winMemData;
+struct winMemData {
+#ifndef NDEBUG
+ u32 magic; /* Magic number to detect structure corruption. */
+#endif
+ HANDLE hHeap; /* The handle to our heap. */
+ BOOL bOwned; /* Do we own the heap (i.e. destroy it on shutdown)? */
+};
+
+#ifndef NDEBUG
+#define WINMEM_MAGIC 0x42b2830b
+#endif
+
+static struct winMemData win_mem_data = {
+#ifndef NDEBUG
+ WINMEM_MAGIC,
+#endif
+ NULL, FALSE
+};
+
+#ifndef NDEBUG
+#define winMemAssertMagic() assert( win_mem_data.magic==WINMEM_MAGIC )
+#else
+#define winMemAssertMagic()
+#endif
+
+#define winMemGetHeap() win_mem_data.hHeap
+
+static void *winMemMalloc(int nBytes);
+static void winMemFree(void *pPrior);
+static void *winMemRealloc(void *pPrior, int nBytes);
+static int winMemSize(void *p);
+static int winMemRoundup(int n);
+static int winMemInit(void *pAppData);
+static void winMemShutdown(void *pAppData);
+
+SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetWin32(void);
+#endif /* SQLITE_WIN32_MALLOC */
/*
** The following variable is (normally) set once and never changes
-** thereafter. It records whether the operating system is Win95
+** thereafter. It records whether the operating system is Win9x
** or WinNT.
**
** 0: Operating system unknown.
-** 1: Operating system is Win95.
+** 1: Operating system is Win9x.
** 2: Operating system is WinNT.
**
** In order to facilitate testing on a WinNT system, the test fixture
@@ -29775,6 +32154,536 @@
#endif
/*
+** Many system calls are accessed through pointer-to-functions so that
+** they may be overridden at runtime to facilitate fault injection during
+** testing and sandboxing. The following array holds the names and pointers
+** to all overrideable system calls.
+*/
+#if !SQLITE_OS_WINCE
+# define SQLITE_WIN32_HAS_ANSI
+#endif
+
+#if SQLITE_OS_WINCE || SQLITE_OS_WINNT
+# define SQLITE_WIN32_HAS_WIDE
+#endif
+
+#ifndef SYSCALL
+# define SYSCALL sqlite3_syscall_ptr
+#endif
+
+#if SQLITE_OS_WINCE
+/*
+** These macros are necessary because Windows CE does not natively support the
+** Win32 APIs LockFile, UnlockFile, and LockFileEx.
+ */
+
+# define LockFile(a,b,c,d,e) winceLockFile(&a, b, c, d, e)
+# define UnlockFile(a,b,c,d,e) winceUnlockFile(&a, b, c, d, e)
+# define LockFileEx(a,b,c,d,e,f) winceLockFileEx(&a, b, c, d, e, f)
+
+/*
+** These are the special syscall hacks for Windows CE. The locking related
+** defines here refer to the macros defined just above.
+ */
+
+# define osAreFileApisANSI() 1
+# define osLockFile LockFile
+# define osUnlockFile UnlockFile
+# define osLockFileEx LockFileEx
+#endif
+
+static struct win_syscall {
+ const char *zName; /* Name of the sytem call */
+ sqlite3_syscall_ptr pCurrent; /* Current value of the system call */
+ sqlite3_syscall_ptr pDefault; /* Default value */
+} aSyscall[] = {
+#if !SQLITE_OS_WINCE
+ { "AreFileApisANSI", (SYSCALL)AreFileApisANSI, 0 },
+
+#define osAreFileApisANSI ((BOOL(WINAPI*)(VOID))aSyscall[0].pCurrent)
+#else
+ { "AreFileApisANSI", (SYSCALL)0, 0 },
+#endif
+
+#if SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_WIDE)
+ { "CharLowerW", (SYSCALL)CharLowerW, 0 },
+#else
+ { "CharLowerW", (SYSCALL)0, 0 },
+#endif
+
+#define osCharLowerW ((LPWSTR(WINAPI*)(LPWSTR))aSyscall[1].pCurrent)
+
+#if SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_WIDE)
+ { "CharUpperW", (SYSCALL)CharUpperW, 0 },
+#else
+ { "CharUpperW", (SYSCALL)0, 0 },
+#endif
+
+#define osCharUpperW ((LPWSTR(WINAPI*)(LPWSTR))aSyscall[2].pCurrent)
+
+ { "CloseHandle", (SYSCALL)CloseHandle, 0 },
+
+#define osCloseHandle ((BOOL(WINAPI*)(HANDLE))aSyscall[3].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "CreateFileA", (SYSCALL)CreateFileA, 0 },
+#else
+ { "CreateFileA", (SYSCALL)0, 0 },
+#endif
+
+#define osCreateFileA ((HANDLE(WINAPI*)(LPCSTR,DWORD,DWORD, \
+ LPSECURITY_ATTRIBUTES,DWORD,DWORD,HANDLE))aSyscall[4].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "CreateFileW", (SYSCALL)CreateFileW, 0 },
+#else
+ { "CreateFileW", (SYSCALL)0, 0 },
+#endif
+
+#define osCreateFileW ((HANDLE(WINAPI*)(LPCWSTR,DWORD,DWORD, \
+ LPSECURITY_ATTRIBUTES,DWORD,DWORD,HANDLE))aSyscall[5].pCurrent)
+
+ { "CreateFileMapping", (SYSCALL)CreateFileMapping, 0 },
+
+#define osCreateFileMapping ((HANDLE(WINAPI*)(HANDLE,LPSECURITY_ATTRIBUTES, \
+ DWORD,DWORD,DWORD,LPCTSTR))aSyscall[6].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "CreateFileMappingW", (SYSCALL)CreateFileMappingW, 0 },
+#else
+ { "CreateFileMappingW", (SYSCALL)0, 0 },
+#endif
+
+#define osCreateFileMappingW ((HANDLE(WINAPI*)(HANDLE,LPSECURITY_ATTRIBUTES, \
+ DWORD,DWORD,DWORD,LPCWSTR))aSyscall[7].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "CreateMutexW", (SYSCALL)CreateMutexW, 0 },
+#else
+ { "CreateMutexW", (SYSCALL)0, 0 },
+#endif
+
+#define osCreateMutexW ((HANDLE(WINAPI*)(LPSECURITY_ATTRIBUTES,BOOL, \
+ LPCWSTR))aSyscall[8].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "DeleteFileA", (SYSCALL)DeleteFileA, 0 },
+#else
+ { "DeleteFileA", (SYSCALL)0, 0 },
+#endif
+
+#define osDeleteFileA ((BOOL(WINAPI*)(LPCSTR))aSyscall[9].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "DeleteFileW", (SYSCALL)DeleteFileW, 0 },
+#else
+ { "DeleteFileW", (SYSCALL)0, 0 },
+#endif
+
+#define osDeleteFileW ((BOOL(WINAPI*)(LPCWSTR))aSyscall[10].pCurrent)
+
+#if SQLITE_OS_WINCE
+ { "FileTimeToLocalFileTime", (SYSCALL)FileTimeToLocalFileTime, 0 },
+#else
+ { "FileTimeToLocalFileTime", (SYSCALL)0, 0 },
+#endif
+
+#define osFileTimeToLocalFileTime ((BOOL(WINAPI*)(CONST FILETIME*, \
+ LPFILETIME))aSyscall[11].pCurrent)
+
+#if SQLITE_OS_WINCE
+ { "FileTimeToSystemTime", (SYSCALL)FileTimeToSystemTime, 0 },
+#else
+ { "FileTimeToSystemTime", (SYSCALL)0, 0 },
+#endif
+
+#define osFileTimeToSystemTime ((BOOL(WINAPI*)(CONST FILETIME*, \
+ LPSYSTEMTIME))aSyscall[12].pCurrent)
+
+ { "FlushFileBuffers", (SYSCALL)FlushFileBuffers, 0 },
+
+#define osFlushFileBuffers ((BOOL(WINAPI*)(HANDLE))aSyscall[13].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "FormatMessageA", (SYSCALL)FormatMessageA, 0 },
+#else
+ { "FormatMessageA", (SYSCALL)0, 0 },
+#endif
+
+#define osFormatMessageA ((DWORD(WINAPI*)(DWORD,LPCVOID,DWORD,DWORD,LPSTR, \
+ DWORD,va_list*))aSyscall[14].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "FormatMessageW", (SYSCALL)FormatMessageW, 0 },
+#else
+ { "FormatMessageW", (SYSCALL)0, 0 },
+#endif
+
+#define osFormatMessageW ((DWORD(WINAPI*)(DWORD,LPCVOID,DWORD,DWORD,LPWSTR, \
+ DWORD,va_list*))aSyscall[15].pCurrent)
+
+ { "FreeLibrary", (SYSCALL)FreeLibrary, 0 },
+
+#define osFreeLibrary ((BOOL(WINAPI*)(HMODULE))aSyscall[16].pCurrent)
+
+ { "GetCurrentProcessId", (SYSCALL)GetCurrentProcessId, 0 },
+
+#define osGetCurrentProcessId ((DWORD(WINAPI*)(VOID))aSyscall[17].pCurrent)
+
+#if !SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_ANSI)
+ { "GetDiskFreeSpaceA", (SYSCALL)GetDiskFreeSpaceA, 0 },
+#else
+ { "GetDiskFreeSpaceA", (SYSCALL)0, 0 },
+#endif
+
+#define osGetDiskFreeSpaceA ((BOOL(WINAPI*)(LPCSTR,LPDWORD,LPDWORD,LPDWORD, \
+ LPDWORD))aSyscall[18].pCurrent)
+
+#if !SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_WIDE)
+ { "GetDiskFreeSpaceW", (SYSCALL)GetDiskFreeSpaceW, 0 },
+#else
+ { "GetDiskFreeSpaceW", (SYSCALL)0, 0 },
+#endif
+
+#define osGetDiskFreeSpaceW ((BOOL(WINAPI*)(LPCWSTR,LPDWORD,LPDWORD,LPDWORD, \
+ LPDWORD))aSyscall[19].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "GetFileAttributesA", (SYSCALL)GetFileAttributesA, 0 },
+#else
+ { "GetFileAttributesA", (SYSCALL)0, 0 },
+#endif
+
+#define osGetFileAttributesA ((DWORD(WINAPI*)(LPCSTR))aSyscall[20].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "GetFileAttributesW", (SYSCALL)GetFileAttributesW, 0 },
+#else
+ { "GetFileAttributesW", (SYSCALL)0, 0 },
+#endif
+
+#define osGetFileAttributesW ((DWORD(WINAPI*)(LPCWSTR))aSyscall[21].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "GetFileAttributesExW", (SYSCALL)GetFileAttributesExW, 0 },
+#else
+ { "GetFileAttributesExW", (SYSCALL)0, 0 },
+#endif
+
+#define osGetFileAttributesExW ((BOOL(WINAPI*)(LPCWSTR,GET_FILEEX_INFO_LEVELS, \
+ LPVOID))aSyscall[22].pCurrent)
+
+ { "GetFileSize", (SYSCALL)GetFileSize, 0 },
+
+#define osGetFileSize ((DWORD(WINAPI*)(HANDLE,LPDWORD))aSyscall[23].pCurrent)
+
+#if !SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_ANSI)
+ { "GetFullPathNameA", (SYSCALL)GetFullPathNameA, 0 },
+#else
+ { "GetFullPathNameA", (SYSCALL)0, 0 },
+#endif
+
+#define osGetFullPathNameA ((DWORD(WINAPI*)(LPCSTR,DWORD,LPSTR, \
+ LPSTR*))aSyscall[24].pCurrent)
+
+#if !SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_WIDE)
+ { "GetFullPathNameW", (SYSCALL)GetFullPathNameW, 0 },
+#else
+ { "GetFullPathNameW", (SYSCALL)0, 0 },
+#endif
+
+#define osGetFullPathNameW ((DWORD(WINAPI*)(LPCWSTR,DWORD,LPWSTR, \
+ LPWSTR*))aSyscall[25].pCurrent)
+
+ { "GetLastError", (SYSCALL)GetLastError, 0 },
+
+#define osGetLastError ((DWORD(WINAPI*)(VOID))aSyscall[26].pCurrent)
+
+#if SQLITE_OS_WINCE
+ /* The GetProcAddressA() routine is only available on Windows CE. */
+ { "GetProcAddressA", (SYSCALL)GetProcAddressA, 0 },
+#else
+ /* All other Windows platforms expect GetProcAddress() to take
+ ** an ANSI string regardless of the _UNICODE setting */
+ { "GetProcAddressA", (SYSCALL)GetProcAddress, 0 },
+#endif
+
+#define osGetProcAddressA ((FARPROC(WINAPI*)(HMODULE, \
+ LPCSTR))aSyscall[27].pCurrent)
+
+ { "GetSystemInfo", (SYSCALL)GetSystemInfo, 0 },
+
+#define osGetSystemInfo ((VOID(WINAPI*)(LPSYSTEM_INFO))aSyscall[28].pCurrent)
+
+ { "GetSystemTime", (SYSCALL)GetSystemTime, 0 },
+
+#define osGetSystemTime ((VOID(WINAPI*)(LPSYSTEMTIME))aSyscall[29].pCurrent)
+
+#if !SQLITE_OS_WINCE
+ { "GetSystemTimeAsFileTime", (SYSCALL)GetSystemTimeAsFileTime, 0 },
+#else
+ { "GetSystemTimeAsFileTime", (SYSCALL)0, 0 },
+#endif
+
+#define osGetSystemTimeAsFileTime ((VOID(WINAPI*)( \
+ LPFILETIME))aSyscall[30].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "GetTempPathA", (SYSCALL)GetTempPathA, 0 },
+#else
+ { "GetTempPathA", (SYSCALL)0, 0 },
+#endif
+
+#define osGetTempPathA ((DWORD(WINAPI*)(DWORD,LPSTR))aSyscall[31].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "GetTempPathW", (SYSCALL)GetTempPathW, 0 },
+#else
+ { "GetTempPathW", (SYSCALL)0, 0 },
+#endif
+
+#define osGetTempPathW ((DWORD(WINAPI*)(DWORD,LPWSTR))aSyscall[32].pCurrent)
+
+ { "GetTickCount", (SYSCALL)GetTickCount, 0 },
+
+#define osGetTickCount ((DWORD(WINAPI*)(VOID))aSyscall[33].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "GetVersionExA", (SYSCALL)GetVersionExA, 0 },
+#else
+ { "GetVersionExA", (SYSCALL)0, 0 },
+#endif
+
+#define osGetVersionExA ((BOOL(WINAPI*)( \
+ LPOSVERSIONINFOA))aSyscall[34].pCurrent)
+
+ { "HeapAlloc", (SYSCALL)HeapAlloc, 0 },
+
+#define osHeapAlloc ((LPVOID(WINAPI*)(HANDLE,DWORD, \
+ SIZE_T))aSyscall[35].pCurrent)
+
+ { "HeapCreate", (SYSCALL)HeapCreate, 0 },
+
+#define osHeapCreate ((HANDLE(WINAPI*)(DWORD,SIZE_T, \
+ SIZE_T))aSyscall[36].pCurrent)
+
+ { "HeapDestroy", (SYSCALL)HeapDestroy, 0 },
+
+#define osHeapDestroy ((BOOL(WINAPI*)(HANDLE))aSyscall[37].pCurrent)
+
+ { "HeapFree", (SYSCALL)HeapFree, 0 },
+
+#define osHeapFree ((BOOL(WINAPI*)(HANDLE,DWORD,LPVOID))aSyscall[38].pCurrent)
+
+ { "HeapReAlloc", (SYSCALL)HeapReAlloc, 0 },
+
+#define osHeapReAlloc ((LPVOID(WINAPI*)(HANDLE,DWORD,LPVOID, \
+ SIZE_T))aSyscall[39].pCurrent)
+
+ { "HeapSize", (SYSCALL)HeapSize, 0 },
+
+#define osHeapSize ((SIZE_T(WINAPI*)(HANDLE,DWORD, \
+ LPCVOID))aSyscall[40].pCurrent)
+
+ { "HeapValidate", (SYSCALL)HeapValidate, 0 },
+
+#define osHeapValidate ((BOOL(WINAPI*)(HANDLE,DWORD, \
+ LPCVOID))aSyscall[41].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_ANSI)
+ { "LoadLibraryA", (SYSCALL)LoadLibraryA, 0 },
+#else
+ { "LoadLibraryA", (SYSCALL)0, 0 },
+#endif
+
+#define osLoadLibraryA ((HMODULE(WINAPI*)(LPCSTR))aSyscall[42].pCurrent)
+
+#if defined(SQLITE_WIN32_HAS_WIDE)
+ { "LoadLibraryW", (SYSCALL)LoadLibraryW, 0 },
+#else
+ { "LoadLibraryW", (SYSCALL)0, 0 },
+#endif
+
+#define osLoadLibraryW ((HMODULE(WINAPI*)(LPCWSTR))aSyscall[43].pCurrent)
+
+ { "LocalFree", (SYSCALL)LocalFree, 0 },
+
+#define osLocalFree ((HLOCAL(WINAPI*)(HLOCAL))aSyscall[44].pCurrent)
+
+#if !SQLITE_OS_WINCE
+ { "LockFile", (SYSCALL)LockFile, 0 },
+
+#define osLockFile ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
+ DWORD))aSyscall[45].pCurrent)
+#else
+ { "LockFile", (SYSCALL)0, 0 },
+#endif
+
+#if !SQLITE_OS_WINCE
+ { "LockFileEx", (SYSCALL)LockFileEx, 0 },
+
+#define osLockFileEx ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD,DWORD, \
+ LPOVERLAPPED))aSyscall[46].pCurrent)
+#else
+ { "LockFileEx", (SYSCALL)0, 0 },
+#endif
+
+ { "MapViewOfFile", (SYSCALL)MapViewOfFile, 0 },
+
+#define osMapViewOfFile ((LPVOID(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
+ SIZE_T))aSyscall[47].pCurrent)
+
+ { "MultiByteToWideChar", (SYSCALL)MultiByteToWideChar, 0 },
+
+#define osMultiByteToWideChar ((int(WINAPI*)(UINT,DWORD,LPCSTR,int,LPWSTR, \
+ int))aSyscall[48].pCurrent)
+
+ { "QueryPerformanceCounter", (SYSCALL)QueryPerformanceCounter, 0 },
+
+#define osQueryPerformanceCounter ((BOOL(WINAPI*)( \
+ LARGE_INTEGER*))aSyscall[49].pCurrent)
+
+ { "ReadFile", (SYSCALL)ReadFile, 0 },
+
+#define osReadFile ((BOOL(WINAPI*)(HANDLE,LPVOID,DWORD,LPDWORD, \
+ LPOVERLAPPED))aSyscall[50].pCurrent)
+
+ { "SetEndOfFile", (SYSCALL)SetEndOfFile, 0 },
+
+#define osSetEndOfFile ((BOOL(WINAPI*)(HANDLE))aSyscall[51].pCurrent)
+
+ { "SetFilePointer", (SYSCALL)SetFilePointer, 0 },
+
+#define osSetFilePointer ((DWORD(WINAPI*)(HANDLE,LONG,PLONG, \
+ DWORD))aSyscall[52].pCurrent)
+
+ { "Sleep", (SYSCALL)Sleep, 0 },
+
+#define osSleep ((VOID(WINAPI*)(DWORD))aSyscall[53].pCurrent)
+
+ { "SystemTimeToFileTime", (SYSCALL)SystemTimeToFileTime, 0 },
+
+#define osSystemTimeToFileTime ((BOOL(WINAPI*)(CONST SYSTEMTIME*, \
+ LPFILETIME))aSyscall[54].pCurrent)
+
+#if !SQLITE_OS_WINCE
+ { "UnlockFile", (SYSCALL)UnlockFile, 0 },
+
+#define osUnlockFile ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
+ DWORD))aSyscall[55].pCurrent)
+#else
+ { "UnlockFile", (SYSCALL)0, 0 },
+#endif
+
+#if !SQLITE_OS_WINCE
+ { "UnlockFileEx", (SYSCALL)UnlockFileEx, 0 },
+
+#define osUnlockFileEx ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
+ LPOVERLAPPED))aSyscall[56].pCurrent)
+#else
+ { "UnlockFileEx", (SYSCALL)0, 0 },
+#endif
+
+ { "UnmapViewOfFile", (SYSCALL)UnmapViewOfFile, 0 },
+
+#define osUnmapViewOfFile ((BOOL(WINAPI*)(LPCVOID))aSyscall[57].pCurrent)
+
+ { "WideCharToMultiByte", (SYSCALL)WideCharToMultiByte, 0 },
+
+#define osWideCharToMultiByte ((int(WINAPI*)(UINT,DWORD,LPCWSTR,int,LPSTR,int, \
+ LPCSTR,LPBOOL))aSyscall[58].pCurrent)
+
+ { "WriteFile", (SYSCALL)WriteFile, 0 },
+
+#define osWriteFile ((BOOL(WINAPI*)(HANDLE,LPCVOID,DWORD,LPDWORD, \
+ LPOVERLAPPED))aSyscall[59].pCurrent)
+
+}; /* End of the overrideable system calls */
+
+/*
+** This is the xSetSystemCall() method of sqlite3_vfs for all of the
+** "win32" VFSes. Return SQLITE_OK opon successfully updating the
+** system call pointer, or SQLITE_NOTFOUND if there is no configurable
+** system call named zName.
+*/
+static int winSetSystemCall(
+ sqlite3_vfs *pNotUsed, /* The VFS pointer. Not used */
+ const char *zName, /* Name of system call to override */
+ sqlite3_syscall_ptr pNewFunc /* Pointer to new system call value */
+){
+ unsigned int i;
+ int rc = SQLITE_NOTFOUND;
+
+ UNUSED_PARAMETER(pNotUsed);
+ if( zName==0 ){
+ /* If no zName is given, restore all system calls to their default
+ ** settings and return NULL
+ */
+ rc = SQLITE_OK;
+ for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
+ if( aSyscall[i].pDefault ){
+ aSyscall[i].pCurrent = aSyscall[i].pDefault;
+ }
+ }
+ }else{
+ /* If zName is specified, operate on only the one system call
+ ** specified.
+ */
+ for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
+ if( strcmp(zName, aSyscall[i].zName)==0 ){
+ if( aSyscall[i].pDefault==0 ){
+ aSyscall[i].pDefault = aSyscall[i].pCurrent;
+ }
+ rc = SQLITE_OK;
+ if( pNewFunc==0 ) pNewFunc = aSyscall[i].pDefault;
+ aSyscall[i].pCurrent = pNewFunc;
+ break;
+ }
+ }
+ }
+ return rc;
+}
+
+/*
+** Return the value of a system call. Return NULL if zName is not a
+** recognized system call name. NULL is also returned if the system call
+** is currently undefined.
+*/
+static sqlite3_syscall_ptr winGetSystemCall(
+ sqlite3_vfs *pNotUsed,
+ const char *zName
+){
+ unsigned int i;
+
+ UNUSED_PARAMETER(pNotUsed);
+ for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
+ if( strcmp(zName, aSyscall[i].zName)==0 ) return aSyscall[i].pCurrent;
+ }
+ return 0;
+}
+
+/*
+** Return the name of the first system call after zName. If zName==NULL
+** then return the name of the first system call. Return NULL if zName
+** is the last system call or if zName is not the name of a valid
+** system call.
+*/
+static const char *winNextSystemCall(sqlite3_vfs *p, const char *zName){
+ int i = -1;
+
+ UNUSED_PARAMETER(p);
+ if( zName ){
+ for(i=0; i<ArraySize(aSyscall)-1; i++){
+ if( strcmp(zName, aSyscall[i].zName)==0 ) break;
+ }
+ }
+ for(i++; i<ArraySize(aSyscall); i++){
+ if( aSyscall[i].pCurrent!=0 ) return aSyscall[i].zName;
+ }
+ return 0;
+}
+
+/*
** Return true (non-zero) if we are running under WinNT, Win2K, WinXP,
** or WinCE. Return false (zero) for Win95, Win98, or WinME.
**
@@ -29790,105 +32699,302 @@
#else
static int isNT(void){
if( sqlite3_os_type==0 ){
- OSVERSIONINFO sInfo;
+ OSVERSIONINFOA sInfo;
sInfo.dwOSVersionInfoSize = sizeof(sInfo);
- GetVersionEx(&sInfo);
+ osGetVersionExA(&sInfo);
sqlite3_os_type = sInfo.dwPlatformId==VER_PLATFORM_WIN32_NT ? 2 : 1;
}
return sqlite3_os_type==2;
}
#endif /* SQLITE_OS_WINCE */
+#ifdef SQLITE_WIN32_MALLOC
/*
-** Convert a UTF-8 string to microsoft unicode (UTF-16?).
+** Allocate nBytes of memory.
+*/
+static void *winMemMalloc(int nBytes){
+ HANDLE hHeap;
+ void *p;
+
+ winMemAssertMagic();
+ hHeap = winMemGetHeap();
+ assert( hHeap!=0 );
+ assert( hHeap!=INVALID_HANDLE_VALUE );
+#ifdef SQLITE_WIN32_MALLOC_VALIDATE
+ assert ( osHeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) );
+#endif
+ assert( nBytes>=0 );
+ p = osHeapAlloc(hHeap, SQLITE_WIN32_HEAP_FLAGS, (SIZE_T)nBytes);
+ if( !p ){
+ sqlite3_log(SQLITE_NOMEM, "failed to HeapAlloc %u bytes (%d), heap=%p",
+ nBytes, osGetLastError(), (void*)hHeap);
+ }
+ return p;
+}
+
+/*
+** Free memory.
+*/
+static void winMemFree(void *pPrior){
+ HANDLE hHeap;
+
+ winMemAssertMagic();
+ hHeap = winMemGetHeap();
+ assert( hHeap!=0 );
+ assert( hHeap!=INVALID_HANDLE_VALUE );
+#ifdef SQLITE_WIN32_MALLOC_VALIDATE
+ assert ( osHeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior) );
+#endif
+ if( !pPrior ) return; /* Passing NULL to HeapFree is undefined. */
+ if( !osHeapFree(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior) ){
+ sqlite3_log(SQLITE_NOMEM, "failed to HeapFree block %p (%d), heap=%p",
+ pPrior, osGetLastError(), (void*)hHeap);
+ }
+}
+
+/*
+** Change the size of an existing memory allocation
+*/
+static void *winMemRealloc(void *pPrior, int nBytes){
+ HANDLE hHeap;
+ void *p;
+
+ winMemAssertMagic();
+ hHeap = winMemGetHeap();
+ assert( hHeap!=0 );
+ assert( hHeap!=INVALID_HANDLE_VALUE );
+#ifdef SQLITE_WIN32_MALLOC_VALIDATE
+ assert ( osHeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior) );
+#endif
+ assert( nBytes>=0 );
+ if( !pPrior ){
+ p = osHeapAlloc(hHeap, SQLITE_WIN32_HEAP_FLAGS, (SIZE_T)nBytes);
+ }else{
+ p = osHeapReAlloc(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior, (SIZE_T)nBytes);
+ }
+ if( !p ){
+ sqlite3_log(SQLITE_NOMEM, "failed to %s %u bytes (%d), heap=%p",
+ pPrior ? "HeapReAlloc" : "HeapAlloc", nBytes, osGetLastError(),
+ (void*)hHeap);
+ }
+ return p;
+}
+
+/*
+** Return the size of an outstanding allocation, in bytes.
+*/
+static int winMemSize(void *p){
+ HANDLE hHeap;
+ SIZE_T n;
+
+ winMemAssertMagic();
+ hHeap = winMemGetHeap();
+ assert( hHeap!=0 );
+ assert( hHeap!=INVALID_HANDLE_VALUE );
+#ifdef SQLITE_WIN32_MALLOC_VALIDATE
+ assert ( osHeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) );
+#endif
+ if( !p ) return 0;
+ n = osHeapSize(hHeap, SQLITE_WIN32_HEAP_FLAGS, p);
+ if( n==(SIZE_T)-1 ){
+ sqlite3_log(SQLITE_NOMEM, "failed to HeapSize block %p (%d), heap=%p",
+ p, osGetLastError(), (void*)hHeap);
+ return 0;
+ }
+ return (int)n;
+}
+
+/*
+** Round up a request size to the next valid allocation size.
+*/
+static int winMemRoundup(int n){
+ return n;
+}
+
+/*
+** Initialize this module.
+*/
+static int winMemInit(void *pAppData){
+ winMemData *pWinMemData = (winMemData *)pAppData;
+
+ if( !pWinMemData ) return SQLITE_ERROR;
+ assert( pWinMemData->magic==WINMEM_MAGIC );
+ if( !pWinMemData->hHeap ){
+ pWinMemData->hHeap = osHeapCreate(SQLITE_WIN32_HEAP_FLAGS,
+ SQLITE_WIN32_HEAP_INIT_SIZE,
+ SQLITE_WIN32_HEAP_MAX_SIZE);
+ if( !pWinMemData->hHeap ){
+ sqlite3_log(SQLITE_NOMEM,
+ "failed to HeapCreate (%d), flags=%u, initSize=%u, maxSize=%u",
+ osGetLastError(), SQLITE_WIN32_HEAP_FLAGS,
+ SQLITE_WIN32_HEAP_INIT_SIZE, SQLITE_WIN32_HEAP_MAX_SIZE);
+ return SQLITE_NOMEM;
+ }
+ pWinMemData->bOwned = TRUE;
+ }
+ assert( pWinMemData->hHeap!=0 );
+ assert( pWinMemData->hHeap!=INVALID_HANDLE_VALUE );
+#ifdef SQLITE_WIN32_MALLOC_VALIDATE
+ assert( osHeapValidate(pWinMemData->hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) );
+#endif
+ return SQLITE_OK;
+}
+
+/*
+** Deinitialize this module.
+*/
+static void winMemShutdown(void *pAppData){
+ winMemData *pWinMemData = (winMemData *)pAppData;
+
+ if( !pWinMemData ) return;
+ if( pWinMemData->hHeap ){
+ assert( pWinMemData->hHeap!=INVALID_HANDLE_VALUE );
+#ifdef SQLITE_WIN32_MALLOC_VALIDATE
+ assert( osHeapValidate(pWinMemData->hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) );
+#endif
+ if( pWinMemData->bOwned ){
+ if( !osHeapDestroy(pWinMemData->hHeap) ){
+ sqlite3_log(SQLITE_NOMEM, "failed to HeapDestroy (%d), heap=%p",
+ osGetLastError(), (void*)pWinMemData->hHeap);
+ }
+ pWinMemData->bOwned = FALSE;
+ }
+ pWinMemData->hHeap = NULL;
+ }
+}
+
+/*
+** Populate the low-level memory allocation function pointers in
+** sqlite3GlobalConfig.m with pointers to the routines in this file. The
+** arguments specify the block of memory to manage.
+**
+** This routine is only called by sqlite3_config(), and therefore
+** is not required to be threadsafe (it is not).
+*/
+SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetWin32(void){
+ static const sqlite3_mem_methods winMemMethods = {
+ winMemMalloc,
+ winMemFree,
+ winMemRealloc,
+ winMemSize,
+ winMemRoundup,
+ winMemInit,
+ winMemShutdown,
+ &win_mem_data
+ };
+ return &winMemMethods;
+}
+
+SQLITE_PRIVATE void sqlite3MemSetDefault(void){
+ sqlite3_config(SQLITE_CONFIG_MALLOC, sqlite3MemGetWin32());
+}
+#endif /* SQLITE_WIN32_MALLOC */
+
+/*
+** Convert a UTF-8 string to Microsoft Unicode (UTF-16?).
**
** Space to hold the returned string is obtained from malloc.
*/
-static WCHAR *utf8ToUnicode(const char *zFilename){
+static LPWSTR utf8ToUnicode(const char *zFilename){
int nChar;
- WCHAR *zWideFilename;
+ LPWSTR zWideFilename;
- nChar = MultiByteToWideChar(CP_UTF8, 0, zFilename, -1, NULL, 0);
- zWideFilename = malloc( nChar*sizeof(zWideFilename[0]) );
+ nChar = osMultiByteToWideChar(CP_UTF8, 0, zFilename, -1, NULL, 0);
+ if( nChar==0 ){
+ return 0;
+ }
+ zWideFilename = sqlite3_malloc( nChar*sizeof(zWideFilename[0]) );
if( zWideFilename==0 ){
return 0;
}
- nChar = MultiByteToWideChar(CP_UTF8, 0, zFilename, -1, zWideFilename, nChar);
+ nChar = osMultiByteToWideChar(CP_UTF8, 0, zFilename, -1, zWideFilename,
+ nChar);
if( nChar==0 ){
- free(zWideFilename);
+ sqlite3_free(zWideFilename);
zWideFilename = 0;
}
return zWideFilename;
}
/*
-** Convert microsoft unicode to UTF-8. Space to hold the returned string is
-** obtained from malloc().
+** Convert Microsoft Unicode to UTF-8. Space to hold the returned string is
+** obtained from sqlite3_malloc().
*/
-static char *unicodeToUtf8(const WCHAR *zWideFilename){
+static char *unicodeToUtf8(LPCWSTR zWideFilename){
int nByte;
char *zFilename;
- nByte = WideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, 0, 0, 0, 0);
- zFilename = malloc( nByte );
+ nByte = osWideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, 0, 0, 0, 0);
+ if( nByte == 0 ){
+ return 0;
+ }
+ zFilename = sqlite3_malloc( nByte );
if( zFilename==0 ){
return 0;
}
- nByte = WideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, zFilename, nByte,
- 0, 0);
+ nByte = osWideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, zFilename, nByte,
+ 0, 0);
if( nByte == 0 ){
- free(zFilename);
+ sqlite3_free(zFilename);
zFilename = 0;
}
return zFilename;
}
/*
-** Convert an ansi string to microsoft unicode, based on the
+** Convert an ANSI string to Microsoft Unicode, based on the
** current codepage settings for file apis.
**
** Space to hold the returned string is obtained
-** from malloc.
+** from sqlite3_malloc.
*/
-static WCHAR *mbcsToUnicode(const char *zFilename){
+static LPWSTR mbcsToUnicode(const char *zFilename){
int nByte;
- WCHAR *zMbcsFilename;
- int codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
+ LPWSTR zMbcsFilename;
+ int codepage = osAreFileApisANSI() ? CP_ACP : CP_OEMCP;
- nByte = MultiByteToWideChar(codepage, 0, zFilename, -1, NULL,0)*sizeof(WCHAR);
- zMbcsFilename = malloc( nByte*sizeof(zMbcsFilename[0]) );
+ nByte = osMultiByteToWideChar(codepage, 0, zFilename, -1, NULL,
+ 0)*sizeof(WCHAR);
+ if( nByte==0 ){
+ return 0;
+ }
+ zMbcsFilename = sqlite3_malloc( nByte*sizeof(zMbcsFilename[0]) );
if( zMbcsFilename==0 ){
return 0;
}
- nByte = MultiByteToWideChar(codepage, 0, zFilename, -1, zMbcsFilename, nByte);
+ nByte = osMultiByteToWideChar(codepage, 0, zFilename, -1, zMbcsFilename,
+ nByte);
if( nByte==0 ){
- free(zMbcsFilename);
+ sqlite3_free(zMbcsFilename);
zMbcsFilename = 0;
}
return zMbcsFilename;
}
/*
-** Convert microsoft unicode to multibyte character string, based on the
-** user's Ansi codepage.
+** Convert Microsoft Unicode to multi-byte character string, based on the
+** user's ANSI codepage.
**
** Space to hold the returned string is obtained from
-** malloc().
+** sqlite3_malloc().
*/
-static char *unicodeToMbcs(const WCHAR *zWideFilename){
+static char *unicodeToMbcs(LPCWSTR zWideFilename){
int nByte;
char *zFilename;
- int codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
+ int codepage = osAreFileApisANSI() ? CP_ACP : CP_OEMCP;
- nByte = WideCharToMultiByte(codepage, 0, zWideFilename, -1, 0, 0, 0, 0);
- zFilename = malloc( nByte );
+ nByte = osWideCharToMultiByte(codepage, 0, zWideFilename, -1, 0, 0, 0, 0);
+ if( nByte == 0 ){
+ return 0;
+ }
+ zFilename = sqlite3_malloc( nByte );
if( zFilename==0 ){
return 0;
}
- nByte = WideCharToMultiByte(codepage, 0, zWideFilename, -1, zFilename, nByte,
- 0, 0);
+ nByte = osWideCharToMultiByte(codepage, 0, zWideFilename, -1, zFilename,
+ nByte, 0, 0);
if( nByte == 0 ){
- free(zFilename);
+ sqlite3_free(zFilename);
zFilename = 0;
}
return zFilename;
@@ -29896,46 +33002,210 @@
/*
** Convert multibyte character string to UTF-8. Space to hold the
-** returned string is obtained from malloc().
+** returned string is obtained from sqlite3_malloc().
*/
SQLITE_API char *sqlite3_win32_mbcs_to_utf8(const char *zFilename){
char *zFilenameUtf8;
- WCHAR *zTmpWide;
+ LPWSTR zTmpWide;
zTmpWide = mbcsToUnicode(zFilename);
if( zTmpWide==0 ){
return 0;
}
zFilenameUtf8 = unicodeToUtf8(zTmpWide);
- free(zTmpWide);
+ sqlite3_free(zTmpWide);
return zFilenameUtf8;
}
/*
** Convert UTF-8 to multibyte character string. Space to hold the
-** returned string is obtained from malloc().
+** returned string is obtained from sqlite3_malloc().
*/
-static char *utf8ToMbcs(const char *zFilename){
+SQLITE_API char *sqlite3_win32_utf8_to_mbcs(const char *zFilename){
char *zFilenameMbcs;
- WCHAR *zTmpWide;
+ LPWSTR zTmpWide;
zTmpWide = utf8ToUnicode(zFilename);
if( zTmpWide==0 ){
return 0;
}
zFilenameMbcs = unicodeToMbcs(zTmpWide);
- free(zTmpWide);
+ sqlite3_free(zTmpWide);
return zFilenameMbcs;
}
+
+/*
+** The return value of getLastErrorMsg
+** is zero if the error message fits in the buffer, or non-zero
+** otherwise (if the message was truncated).
+*/
+static int getLastErrorMsg(DWORD lastErrno, int nBuf, char *zBuf){
+ /* FormatMessage returns 0 on failure. Otherwise it
+ ** returns the number of TCHARs written to the output
+ ** buffer, excluding the terminating null char.
+ */
+ DWORD dwLen = 0;
+ char *zOut = 0;
+
+ if( isNT() ){
+ LPWSTR zTempWide = NULL;
+ dwLen = osFormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER |
+ FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_IGNORE_INSERTS,
+ NULL,
+ lastErrno,
+ 0,
+ (LPWSTR) &zTempWide,
+ 0,
+ 0);
+ if( dwLen > 0 ){
+ /* allocate a buffer and convert to UTF8 */
+ sqlite3BeginBenignMalloc();
+ zOut = unicodeToUtf8(zTempWide);
+ sqlite3EndBenignMalloc();
+ /* free the system buffer allocated by FormatMessage */
+ osLocalFree(zTempWide);
+ }
+/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
+** Since the ANSI version of these Windows API do not exist for WINCE,
+** it's important to not reference them for WINCE builds.
+*/
+#if SQLITE_OS_WINCE==0
+ }else{
+ char *zTemp = NULL;
+ dwLen = osFormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER |
+ FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_IGNORE_INSERTS,
+ NULL,
+ lastErrno,
+ 0,
+ (LPSTR) &zTemp,
+ 0,
+ 0);
+ if( dwLen > 0 ){
+ /* allocate a buffer and convert to UTF8 */
+ sqlite3BeginBenignMalloc();
+ zOut = sqlite3_win32_mbcs_to_utf8(zTemp);
+ sqlite3EndBenignMalloc();
+ /* free the system buffer allocated by FormatMessage */
+ osLocalFree(zTemp);
+ }
+#endif
+ }
+ if( 0 == dwLen ){
+ sqlite3_snprintf(nBuf, zBuf, "OsError 0x%x (%u)", lastErrno, lastErrno);
+ }else{
+ /* copy a maximum of nBuf chars to output buffer */
+ sqlite3_snprintf(nBuf, zBuf, "%s", zOut);
+ /* free the UTF8 buffer */
+ sqlite3_free(zOut);
+ }
+ return 0;
+}
+
+/*
+**
+** This function - winLogErrorAtLine() - is only ever called via the macro
+** winLogError().
+**
+** This routine is invoked after an error occurs in an OS function.
+** It logs a message using sqlite3_log() containing the current value of
+** error code and, if possible, the human-readable equivalent from
+** FormatMessage.
+**
+** The first argument passed to the macro should be the error code that
+** will be returned to SQLite (e.g. SQLITE_IOERR_DELETE, SQLITE_CANTOPEN).
+** The two subsequent arguments should be the name of the OS function that
+** failed and the the associated file-system path, if any.
+*/
+#define winLogError(a,b,c,d) winLogErrorAtLine(a,b,c,d,__LINE__)
+static int winLogErrorAtLine(
+ int errcode, /* SQLite error code */
+ DWORD lastErrno, /* Win32 last error */
+ const char *zFunc, /* Name of OS function that failed */
+ const char *zPath, /* File path associated with error */
+ int iLine /* Source line number where error occurred */
+){
+ char zMsg[500]; /* Human readable error text */
+ int i; /* Loop counter */
+
+ zMsg[0] = 0;
+ getLastErrorMsg(lastErrno, sizeof(zMsg), zMsg);
+ assert( errcode!=SQLITE_OK );
+ if( zPath==0 ) zPath = "";
+ for(i=0; zMsg[i] && zMsg[i]!='\r' && zMsg[i]!='\n'; i++){}
+ zMsg[i] = 0;
+ sqlite3_log(errcode,
+ "os_win.c:%d: (%d) %s(%s) - %s",
+ iLine, lastErrno, zFunc, zPath, zMsg
+ );
+
+ return errcode;
+}
+
+/*
+** The number of times that a ReadFile(), WriteFile(), and DeleteFile()
+** will be retried following a locking error - probably caused by
+** antivirus software. Also the initial delay before the first retry.
+** The delay increases linearly with each retry.
+*/
+#ifndef SQLITE_WIN32_IOERR_RETRY
+# define SQLITE_WIN32_IOERR_RETRY 10
+#endif
+#ifndef SQLITE_WIN32_IOERR_RETRY_DELAY
+# define SQLITE_WIN32_IOERR_RETRY_DELAY 25
+#endif
+static int win32IoerrRetry = SQLITE_WIN32_IOERR_RETRY;
+static int win32IoerrRetryDelay = SQLITE_WIN32_IOERR_RETRY_DELAY;
+
+/*
+** If a ReadFile() or WriteFile() error occurs, invoke this routine
+** to see if it should be retried. Return TRUE to retry. Return FALSE
+** to give up with an error.
+*/
+static int retryIoerr(int *pnRetry, DWORD *pError){
+ DWORD e = osGetLastError();
+ if( *pnRetry>=win32IoerrRetry ){
+ if( pError ){
+ *pError = e;
+ }
+ return 0;
+ }
+ if( e==ERROR_ACCESS_DENIED ||
+ e==ERROR_LOCK_VIOLATION ||
+ e==ERROR_SHARING_VIOLATION ){
+ osSleep(win32IoerrRetryDelay*(1+*pnRetry));
+ ++*pnRetry;
+ return 1;
+ }
+ if( pError ){
+ *pError = e;
+ }
+ return 0;
+}
+
+/*
+** Log a I/O error retry episode.
+*/
+static void logIoerr(int nRetry){
+ if( nRetry ){
+ sqlite3_log(SQLITE_IOERR,
+ "delayed %dms for lock/sharing conflict",
+ win32IoerrRetryDelay*nRetry*(nRetry+1)/2
+ );
+ }
+}
+
#if SQLITE_OS_WINCE
/*************************************************************************
** This section contains code for WinCE only.
*/
/*
-** WindowsCE does not have a localtime() function. So create a
+** Windows CE does not have a localtime() function. So create a
** substitute.
*/
+/* #include <time.h> */
struct tm *__cdecl localtime(const time_t *t)
{
static struct tm y;
@@ -29946,8 +33216,8 @@
t64 = (t64 + 11644473600)*10000000;
uTm.dwLowDateTime = (DWORD)(t64 & 0xFFFFFFFF);
uTm.dwHighDateTime= (DWORD)(t64 >> 32);
- FileTimeToLocalFileTime(&uTm,&lTm);
- FileTimeToSystemTime(&lTm,&pTm);
+ osFileTimeToLocalFileTime(&uTm,&lTm);
+ osFileTimeToSystemTime(&lTm,&pTm);
y.tm_year = pTm.wYear - 1900;
y.tm_mon = pTm.wMonth - 1;
y.tm_wday = pTm.wDayOfWeek;
@@ -29958,13 +33228,6 @@
return &y;
}
-/* This will never be called, but defined to make the code compile */
-#define GetTempPathA(a,b)
-
-#define LockFile(a,b,c,d,e) winceLockFile(&a, b, c, d, e)
-#define UnlockFile(a,b,c,d,e) winceUnlockFile(&a, b, c, d, e)
-#define LockFileEx(a,b,c,d,e,f) winceLockFileEx(&a, b, c, d, e, f)
-
#define HANDLE_TO_WINFILE(a) (winFile*)&((char*)a)[-(int)offsetof(winFile,h)]
/*
@@ -29986,25 +33249,32 @@
** descriptor pFile
*/
static BOOL winceCreateLock(const char *zFilename, winFile *pFile){
- WCHAR *zTok;
- WCHAR *zName = utf8ToUnicode(zFilename);
+ LPWSTR zTok;
+ LPWSTR zName;
BOOL bInit = TRUE;
+ zName = utf8ToUnicode(zFilename);
+ if( zName==0 ){
+ /* out of memory */
+ return FALSE;
+ }
+
/* Initialize the local lockdata */
- ZeroMemory(&pFile->local, sizeof(pFile->local));
+ memset(&pFile->local, 0, sizeof(pFile->local));
/* Replace the backslashes from the filename and lowercase it
** to derive a mutex name. */
- zTok = CharLowerW(zName);
+ zTok = osCharLowerW(zName);
for (;*zTok;zTok++){
if (*zTok == '\\') *zTok = '_';
}
/* Create/open the named mutex */
- pFile->hMutex = CreateMutexW(NULL, FALSE, zName);
+ pFile->hMutex = osCreateMutexW(NULL, FALSE, zName);
if (!pFile->hMutex){
- pFile->lastErrno = GetLastError();
- free(zName);
+ pFile->lastErrno = osGetLastError();
+ winLogError(SQLITE_ERROR, pFile->lastErrno, "winceCreateLock1", zFilename);
+ sqlite3_free(zName);
return FALSE;
}
@@ -30015,27 +33285,29 @@
** case-sensitive, take advantage of that by uppercasing the mutex name
** and using that as the shared filemapping name.
*/
- CharUpperW(zName);
- pFile->hShared = CreateFileMappingW(INVALID_HANDLE_VALUE, NULL,
- PAGE_READWRITE, 0, sizeof(winceLock),
- zName);
+ osCharUpperW(zName);
+ pFile->hShared = osCreateFileMappingW(INVALID_HANDLE_VALUE, NULL,
+ PAGE_READWRITE, 0, sizeof(winceLock),
+ zName);
/* Set a flag that indicates we're the first to create the memory so it
** must be zero-initialized */
- if (GetLastError() == ERROR_ALREADY_EXISTS){
+ if (osGetLastError() == ERROR_ALREADY_EXISTS){
bInit = FALSE;
}
- free(zName);
+ sqlite3_free(zName);
/* If we succeeded in making the shared memory handle, map it. */
if (pFile->hShared){
- pFile->shared = (winceLock*)MapViewOfFile(pFile->hShared,
+ pFile->shared = (winceLock*)osMapViewOfFile(pFile->hShared,
FILE_MAP_READ|FILE_MAP_WRITE, 0, 0, sizeof(winceLock));
/* If mapping failed, close the shared memory handle and erase it */
if (!pFile->shared){
- pFile->lastErrno = GetLastError();
- CloseHandle(pFile->hShared);
+ pFile->lastErrno = osGetLastError();
+ winLogError(SQLITE_ERROR, pFile->lastErrno,
+ "winceCreateLock2", zFilename);
+ osCloseHandle(pFile->hShared);
pFile->hShared = NULL;
}
}
@@ -30043,14 +33315,14 @@
/* If shared memory could not be created, then close the mutex and fail */
if (pFile->hShared == NULL){
winceMutexRelease(pFile->hMutex);
- CloseHandle(pFile->hMutex);
+ osCloseHandle(pFile->hMutex);
pFile->hMutex = NULL;
return FALSE;
}
/* Initialize the shared memory if we're supposed to */
if (bInit) {
- ZeroMemory(pFile->shared, sizeof(winceLock));
+ memset(pFile->shared, 0, sizeof(winceLock));
}
winceMutexRelease(pFile->hMutex);
@@ -30081,18 +33353,18 @@
}
/* De-reference and close our copy of the shared memory handle */
- UnmapViewOfFile(pFile->shared);
- CloseHandle(pFile->hShared);
+ osUnmapViewOfFile(pFile->shared);
+ osCloseHandle(pFile->hShared);
/* Done with the mutex */
winceMutexRelease(pFile->hMutex);
- CloseHandle(pFile->hMutex);
+ osCloseHandle(pFile->hMutex);
pFile->hMutex = NULL;
}
}
/*
-** An implementation of the LockFile() API of windows for wince
+** An implementation of the LockFile() API of Windows for CE
*/
static BOOL winceLockFile(
HANDLE *phFile,
@@ -30156,7 +33428,7 @@
}
/*
-** An implementation of the UnlockFile API of windows for wince
+** An implementation of the UnlockFile API of Windows for CE
*/
static BOOL winceUnlockFile(
HANDLE *phFile,
@@ -30218,7 +33490,7 @@
}
/*
-** An implementation of the LockFileEx() API of windows for wince
+** An implementation of the LockFileEx() API of Windows for CE
*/
static BOOL winceLockFileEx(
HANDLE *phFile,
@@ -30251,7 +33523,7 @@
******************************************************************************/
/*
-** Some microsoft compilers lack this definition.
+** Some Microsoft compilers lack this definition.
*/
#ifndef INVALID_SET_FILE_POINTER
# define INVALID_SET_FILE_POINTER ((DWORD)-1)
@@ -30266,6 +33538,7 @@
LONG upperBits; /* Most sig. 32 bits of new offset */
LONG lowerBits; /* Least sig. 32 bits of new offset */
DWORD dwRet; /* Value returned by SetFilePointer() */
+ DWORD lastErrno; /* Value returned by GetLastError() */
upperBits = (LONG)((iOffset>>32) & 0x7fffffff);
lowerBits = (LONG)(iOffset & 0xffffffff);
@@ -30277,9 +33550,13 @@
** whether an error has actually occured, it is also necessary to call
** GetLastError().
*/
- dwRet = SetFilePointer(pFile->h, lowerBits, &upperBits, FILE_BEGIN);
- if( (dwRet==INVALID_SET_FILE_POINTER && GetLastError()!=NO_ERROR) ){
- pFile->lastErrno = GetLastError();
+ dwRet = osSetFilePointer(pFile->h, lowerBits, &upperBits, FILE_BEGIN);
+
+ if( (dwRet==INVALID_SET_FILE_POINTER
+ && ((lastErrno = osGetLastError())!=NO_ERROR)) ){
+ pFile->lastErrno = lastErrno;
+ winLogError(SQLITE_IOERR_SEEK, pFile->lastErrno,
+ "seekWinFile", pFile->zPath);
return 1;
}
@@ -30290,7 +33567,7 @@
** Close a file.
**
** It is reported that an attempt to close a handle might sometimes
-** fail. This is a very unreasonable result, but windows is notorious
+** fail. This is a very unreasonable result, but Windows is notorious
** for being unreasonable so I do not doubt that it might happen. If
** the close fails, we pause for 100 milliseconds and try again. As
** many as MX_CLOSE_ATTEMPT attempts to close the handle are made before
@@ -30305,27 +33582,29 @@
assert( pFile->pShm==0 );
OSTRACE(("CLOSE %d\n", pFile->h));
do{
- rc = CloseHandle(pFile->h);
+ rc = osCloseHandle(pFile->h);
/* SimulateIOError( rc=0; cnt=MX_CLOSE_ATTEMPT; ); */
- }while( rc==0 && ++cnt < MX_CLOSE_ATTEMPT && (Sleep(100), 1) );
+ }while( rc==0 && ++cnt < MX_CLOSE_ATTEMPT && (osSleep(100), 1) );
#if SQLITE_OS_WINCE
#define WINCE_DELETION_ATTEMPTS 3
winceDestroyLock(pFile);
if( pFile->zDeleteOnClose ){
int cnt = 0;
while(
- DeleteFileW(pFile->zDeleteOnClose)==0
- && GetFileAttributesW(pFile->zDeleteOnClose)!=0xffffffff
+ osDeleteFileW(pFile->zDeleteOnClose)==0
+ && osGetFileAttributesW(pFile->zDeleteOnClose)!=0xffffffff
&& cnt++ < WINCE_DELETION_ATTEMPTS
){
- Sleep(100); /* Wait a little before trying again */
+ osSleep(100); /* Wait a little before trying again */
}
- free(pFile->zDeleteOnClose);
+ sqlite3_free(pFile->zDeleteOnClose);
}
#endif
OSTRACE(("CLOSE %d %s\n", pFile->h, rc ? "ok" : "failed"));
OpenCounter(-1);
- return rc ? SQLITE_OK : SQLITE_IOERR;
+ return rc ? SQLITE_OK
+ : winLogError(SQLITE_IOERR_CLOSE, osGetLastError(),
+ "winClose", pFile->zPath);
}
/*
@@ -30341,6 +33620,7 @@
){
winFile *pFile = (winFile*)id; /* file handle */
DWORD nRead; /* Number of bytes actually read from file */
+ int nRetry = 0; /* Number of retrys */
assert( id!=0 );
SimulateIOError(return SQLITE_IOERR_READ);
@@ -30349,10 +33629,14 @@
if( seekWinFile(pFile, offset) ){
return SQLITE_FULL;
}
- if( !ReadFile(pFile->h, pBuf, amt, &nRead, 0) ){
- pFile->lastErrno = GetLastError();
- return SQLITE_IOERR_READ;
+ while( !osReadFile(pFile->h, pBuf, amt, &nRead, 0) ){
+ DWORD lastErrno;
+ if( retryIoerr(&nRetry, &lastErrno) ) continue;
+ pFile->lastErrno = lastErrno;
+ return winLogError(SQLITE_IOERR_READ, pFile->lastErrno,
+ "winRead", pFile->zPath);
}
+ logIoerr(nRetry);
if( nRead<(DWORD)amt ){
/* Unread parts of the buffer must be zero-filled */
memset(&((char*)pBuf)[nRead], 0, amt-nRead);
@@ -30374,6 +33658,7 @@
){
int rc; /* True if error has occured, else false */
winFile *pFile = (winFile*)id; /* File handle */
+ int nRetry = 0; /* Number of retries */
assert( amt>0 );
assert( pFile );
@@ -30387,22 +33672,32 @@
u8 *aRem = (u8 *)pBuf; /* Data yet to be written */
int nRem = amt; /* Number of bytes yet to be written */
DWORD nWrite; /* Bytes written by each WriteFile() call */
+ DWORD lastErrno = NO_ERROR; /* Value returned by GetLastError() */
- while( nRem>0 && WriteFile(pFile->h, aRem, nRem, &nWrite, 0) && nWrite>0 ){
+ while( nRem>0 ){
+ if( !osWriteFile(pFile->h, aRem, nRem, &nWrite, 0) ){
+ if( retryIoerr(&nRetry, &lastErrno) ) continue;
+ break;
+ }
+ if( nWrite<=0 ) break;
aRem += nWrite;
nRem -= nWrite;
}
if( nRem>0 ){
- pFile->lastErrno = GetLastError();
+ pFile->lastErrno = lastErrno;
rc = 1;
}
}
if( rc ){
- if( pFile->lastErrno==ERROR_HANDLE_DISK_FULL ){
+ if( ( pFile->lastErrno==ERROR_HANDLE_DISK_FULL )
+ || ( pFile->lastErrno==ERROR_DISK_FULL )){
return SQLITE_FULL;
}
- return SQLITE_IOERR_WRITE;
+ return winLogError(SQLITE_IOERR_WRITE, pFile->lastErrno,
+ "winWrite", pFile->zPath);
+ }else{
+ logIoerr(nRetry);
}
return SQLITE_OK;
}
@@ -30424,16 +33719,18 @@
** actual file size after the operation may be larger than the requested
** size).
*/
- if( pFile->szChunk ){
+ if( pFile->szChunk>0 ){
nByte = ((nByte + pFile->szChunk - 1)/pFile->szChunk) * pFile->szChunk;
}
/* SetEndOfFile() returns non-zero when successful, or zero when it fails. */
if( seekWinFile(pFile, nByte) ){
- rc = SQLITE_IOERR_TRUNCATE;
- }else if( 0==SetEndOfFile(pFile->h) ){
- pFile->lastErrno = GetLastError();
- rc = SQLITE_IOERR_TRUNCATE;
+ rc = winLogError(SQLITE_IOERR_TRUNCATE, pFile->lastErrno,
+ "winTruncate1", pFile->zPath);
+ }else if( 0==osSetEndOfFile(pFile->h) ){
+ pFile->lastErrno = osGetLastError();
+ rc = winLogError(SQLITE_IOERR_TRUNCATE, pFile->lastErrno,
+ "winTruncate2", pFile->zPath);
}
OSTRACE(("TRUNCATE %d %lld %s\n", pFile->h, nByte, rc ? "failed" : "ok"));
@@ -30453,7 +33750,18 @@
** Make sure all writes to a particular file are committed to disk.
*/
static int winSync(sqlite3_file *id, int flags){
-#if !defined(NDEBUG) || !defined(SQLITE_NO_SYNC) || defined(SQLITE_DEBUG)
+#ifndef SQLITE_NO_SYNC
+ /*
+ ** Used only when SQLITE_NO_SYNC is not defined.
+ */
+ BOOL rc;
+#endif
+#if !defined(NDEBUG) || !defined(SQLITE_NO_SYNC) || \
+ (defined(SQLITE_TEST) && defined(SQLITE_DEBUG))
+ /*
+ ** Used when SQLITE_NO_SYNC is not defined and by the assert() and/or
+ ** OSTRACE() macros.
+ */
winFile *pFile = (winFile*)id;
#else
UNUSED_PARAMETER(id);
@@ -30467,20 +33775,19 @@
OSTRACE(("SYNC %d lock=%d\n", pFile->h, pFile->locktype));
-#ifndef SQLITE_TEST
- UNUSED_PARAMETER(flags);
-#else
- if( flags & SQLITE_SYNC_FULL ){
- sqlite3_fullsync_count++;
- }
- sqlite3_sync_count++;
-#endif
-
/* Unix cannot, but some systems may return SQLITE_FULL from here. This
** line is to test that doing so does not cause any problems.
*/
SimulateDiskfullError( return SQLITE_FULL );
- SimulateIOError( return SQLITE_IOERR; );
+
+#ifndef SQLITE_TEST
+ UNUSED_PARAMETER(flags);
+#else
+ if( (flags&0x0F)==SQLITE_SYNC_FULL ){
+ sqlite3_fullsync_count++;
+ }
+ sqlite3_sync_count++;
+#endif
/* If we compiled with the SQLITE_NO_SYNC flag, then syncing is a
** no-op
@@ -30488,11 +33795,14 @@
#ifdef SQLITE_NO_SYNC
return SQLITE_OK;
#else
- if( FlushFileBuffers(pFile->h) ){
+ rc = osFlushFileBuffers(pFile->h);
+ SimulateIOError( rc=FALSE );
+ if( rc ){
return SQLITE_OK;
}else{
- pFile->lastErrno = GetLastError();
- return SQLITE_IOERR;
+ pFile->lastErrno = osGetLastError();
+ return winLogError(SQLITE_IOERR_FSYNC, pFile->lastErrno,
+ "winSync", pFile->zPath);
}
#endif
}
@@ -30504,16 +33814,17 @@
DWORD upperBits;
DWORD lowerBits;
winFile *pFile = (winFile*)id;
- DWORD error;
+ DWORD lastErrno;
assert( id!=0 );
SimulateIOError(return SQLITE_IOERR_FSTAT);
- lowerBits = GetFileSize(pFile->h, &upperBits);
+ lowerBits = osGetFileSize(pFile->h, &upperBits);
if( (lowerBits == INVALID_FILE_SIZE)
- && ((error = GetLastError()) != NO_ERROR) )
+ && ((lastErrno = osGetLastError())!=NO_ERROR) )
{
- pFile->lastErrno = error;
- return SQLITE_IOERR_FSTAT;
+ pFile->lastErrno = lastErrno;
+ return winLogError(SQLITE_IOERR_FSTAT, pFile->lastErrno,
+ "winFileSize", pFile->zPath);
}
*pSize = (((sqlite3_int64)upperBits)<<32) + lowerBits;
return SQLITE_OK;
@@ -30529,7 +33840,7 @@
/*
** Acquire a reader lock.
** Different API routines are called depending on whether or not this
-** is Win95 or WinNT.
+** is Win9x or WinNT.
*/
static int getReadLock(winFile *pFile){
int res;
@@ -30538,8 +33849,8 @@
ovlp.Offset = SHARED_FIRST;
ovlp.OffsetHigh = 0;
ovlp.hEvent = 0;
- res = LockFileEx(pFile->h, LOCKFILE_FAIL_IMMEDIATELY,
- 0, SHARED_SIZE, 0, &ovlp);
+ res = osLockFileEx(pFile->h, LOCKFILE_FAIL_IMMEDIATELY,
+ 0, SHARED_SIZE, 0, &ovlp);
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
*/
#if SQLITE_OS_WINCE==0
@@ -30547,11 +33858,12 @@
int lk;
sqlite3_randomness(sizeof(lk), &lk);
pFile->sharedLockByte = (short)((lk & 0x7fffffff)%(SHARED_SIZE - 1));
- res = LockFile(pFile->h, SHARED_FIRST+pFile->sharedLockByte, 0, 1, 0);
+ res = osLockFile(pFile->h, SHARED_FIRST+pFile->sharedLockByte, 0, 1, 0);
#endif
}
if( res == 0 ){
- pFile->lastErrno = GetLastError();
+ pFile->lastErrno = osGetLastError();
+ /* No need to log a failure to lock */
}
return res;
}
@@ -30561,17 +33873,20 @@
*/
static int unlockReadLock(winFile *pFile){
int res;
+ DWORD lastErrno;
if( isNT() ){
- res = UnlockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
+ res = osUnlockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
*/
#if SQLITE_OS_WINCE==0
}else{
- res = UnlockFile(pFile->h, SHARED_FIRST + pFile->sharedLockByte, 0, 1, 0);
+ res = osUnlockFile(pFile->h, SHARED_FIRST + pFile->sharedLockByte, 0, 1, 0);
#endif
}
- if( res == 0 ){
- pFile->lastErrno = GetLastError();
+ if( res==0 && ((lastErrno = osGetLastError())!=ERROR_NOT_LOCKED) ){
+ pFile->lastErrno = lastErrno;
+ winLogError(SQLITE_IOERR_UNLOCK, pFile->lastErrno,
+ "unlockReadLock", pFile->zPath);
}
return res;
}
@@ -30604,11 +33919,11 @@
*/
static int winLock(sqlite3_file *id, int locktype){
int rc = SQLITE_OK; /* Return code from subroutines */
- int res = 1; /* Result of a windows lock call */
+ int res = 1; /* Result of a Windows lock call */
int newLocktype; /* Set pFile->locktype to this value before exiting */
int gotPendingLock = 0;/* True if we acquired a PENDING lock this time */
winFile *pFile = (winFile*)id;
- DWORD error = NO_ERROR;
+ DWORD lastErrno = NO_ERROR;
assert( id!=0 );
OSTRACE(("LOCK %d %d was %d(%d)\n",
@@ -30638,16 +33953,19 @@
&& (pFile->locktype==RESERVED_LOCK))
){
int cnt = 3;
- while( cnt-->0 && (res = LockFile(pFile->h, PENDING_BYTE, 0, 1, 0))==0 ){
- /* Try 3 times to get the pending lock. The pending lock might be
- ** held by another reader process who will release it momentarily.
+ while( cnt-->0 && (res = osLockFile(pFile->h, PENDING_BYTE, 0, 1, 0))==0 ){
+ /* Try 3 times to get the pending lock. This is needed to work
+ ** around problems caused by indexing and/or anti-virus software on
+ ** Windows systems.
+ ** If you are using this code as a model for alternative VFSes, do not
+ ** copy this retry logic. It is a hack intended for Windows only.
*/
OSTRACE(("could not get a PENDING lock. cnt=%d\n", cnt));
- Sleep(1);
+ if( cnt ) osSleep(1);
}
gotPendingLock = res;
if( !res ){
- error = GetLastError();
+ lastErrno = osGetLastError();
}
}
@@ -30659,7 +33977,7 @@
if( res ){
newLocktype = SHARED_LOCK;
}else{
- error = GetLastError();
+ lastErrno = osGetLastError();
}
}
@@ -30667,11 +33985,11 @@
*/
if( locktype==RESERVED_LOCK && res ){
assert( pFile->locktype==SHARED_LOCK );
- res = LockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
+ res = osLockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
if( res ){
newLocktype = RESERVED_LOCK;
}else{
- error = GetLastError();
+ lastErrno = osGetLastError();
}
}
@@ -30688,12 +34006,12 @@
assert( pFile->locktype>=SHARED_LOCK );
res = unlockReadLock(pFile);
OSTRACE(("unreadlock = %d\n", res));
- res = LockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
+ res = osLockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
if( res ){
newLocktype = EXCLUSIVE_LOCK;
}else{
- error = GetLastError();
- OSTRACE(("error-code = %d\n", error));
+ lastErrno = osGetLastError();
+ OSTRACE(("error-code = %d\n", lastErrno));
getReadLock(pFile);
}
}
@@ -30702,7 +34020,7 @@
** release it now.
*/
if( gotPendingLock && locktype==SHARED_LOCK ){
- UnlockFile(pFile->h, PENDING_BYTE, 0, 1, 0);
+ osUnlockFile(pFile->h, PENDING_BYTE, 0, 1, 0);
}
/* Update the state of the lock has held in the file descriptor then
@@ -30713,7 +34031,7 @@
}else{
OSTRACE(("LOCK FAILED %d trying for %d but got %d\n", pFile->h,
locktype, newLocktype));
- pFile->lastErrno = error;
+ pFile->lastErrno = lastErrno;
rc = SQLITE_BUSY;
}
pFile->locktype = (u8)newLocktype;
@@ -30736,9 +34054,9 @@
rc = 1;
OSTRACE(("TEST WR-LOCK %d %d (local)\n", pFile->h, rc));
}else{
- rc = LockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
+ rc = osLockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
if( rc ){
- UnlockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
+ osUnlockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
}
rc = !rc;
OSTRACE(("TEST WR-LOCK %d %d (remote)\n", pFile->h, rc));
@@ -30768,52 +34086,105 @@
pFile->locktype, pFile->sharedLockByte));
type = pFile->locktype;
if( type>=EXCLUSIVE_LOCK ){
- UnlockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
+ osUnlockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
if( locktype==SHARED_LOCK && !getReadLock(pFile) ){
/* This should never happen. We should always be able to
** reacquire the read lock */
- rc = SQLITE_IOERR_UNLOCK;
+ rc = winLogError(SQLITE_IOERR_UNLOCK, osGetLastError(),
+ "winUnlock", pFile->zPath);
}
}
if( type>=RESERVED_LOCK ){
- UnlockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
+ osUnlockFile(pFile->h, RESERVED_BYTE, 0, 1, 0);
}
if( locktype==NO_LOCK && type>=SHARED_LOCK ){
unlockReadLock(pFile);
}
if( type>=PENDING_LOCK ){
- UnlockFile(pFile->h, PENDING_BYTE, 0, 1, 0);
+ osUnlockFile(pFile->h, PENDING_BYTE, 0, 1, 0);
}
pFile->locktype = (u8)locktype;
return rc;
}
/*
+** If *pArg is inititially negative then this is a query. Set *pArg to
+** 1 or 0 depending on whether or not bit mask of pFile->ctrlFlags is set.
+**
+** If *pArg is 0 or 1, then clear or set the mask bit of pFile->ctrlFlags.
+*/
+static void winModeBit(winFile *pFile, unsigned char mask, int *pArg){
+ if( *pArg<0 ){
+ *pArg = (pFile->ctrlFlags & mask)!=0;
+ }else if( (*pArg)==0 ){
+ pFile->ctrlFlags &= ~mask;
+ }else{
+ pFile->ctrlFlags |= mask;
+ }
+}
+
+/*
** Control and query of the open file handle.
*/
static int winFileControl(sqlite3_file *id, int op, void *pArg){
+ winFile *pFile = (winFile*)id;
switch( op ){
case SQLITE_FCNTL_LOCKSTATE: {
- *(int*)pArg = ((winFile*)id)->locktype;
+ *(int*)pArg = pFile->locktype;
return SQLITE_OK;
}
case SQLITE_LAST_ERRNO: {
- *(int*)pArg = (int)((winFile*)id)->lastErrno;
+ *(int*)pArg = (int)pFile->lastErrno;
return SQLITE_OK;
}
case SQLITE_FCNTL_CHUNK_SIZE: {
- ((winFile*)id)->szChunk = *(int *)pArg;
+ pFile->szChunk = *(int *)pArg;
return SQLITE_OK;
}
case SQLITE_FCNTL_SIZE_HINT: {
- sqlite3_int64 sz = *(sqlite3_int64*)pArg;
- SimulateIOErrorBenign(1);
- winTruncate(id, sz);
- SimulateIOErrorBenign(0);
+ if( pFile->szChunk>0 ){
+ sqlite3_int64 oldSz;
+ int rc = winFileSize(id, &oldSz);
+ if( rc==SQLITE_OK ){
+ sqlite3_int64 newSz = *(sqlite3_int64*)pArg;
+ if( newSz>oldSz ){
+ SimulateIOErrorBenign(1);
+ rc = winTruncate(id, newSz);
+ SimulateIOErrorBenign(0);
+ }
+ }
+ return rc;
+ }
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_PERSIST_WAL: {
+ winModeBit(pFile, WINFILE_PERSIST_WAL, (int*)pArg);
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_POWERSAFE_OVERWRITE: {
+ winModeBit(pFile, WINFILE_PSOW, (int*)pArg);
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_VFSNAME: {
+ *(char**)pArg = sqlite3_mprintf("win32");
+ return SQLITE_OK;
+ }
+ case SQLITE_FCNTL_WIN32_AV_RETRY: {
+ int *a = (int*)pArg;
+ if( a[0]>0 ){
+ win32IoerrRetry = a[0];
+ }else{
+ a[0] = win32IoerrRetry;
+ }
+ if( a[1]>0 ){
+ win32IoerrRetryDelay = a[1];
+ }else{
+ a[1] = win32IoerrRetryDelay;
+ }
return SQLITE_OK;
}
}
- return SQLITE_ERROR;
+ return SQLITE_NOTFOUND;
}
/*
@@ -30827,16 +34198,17 @@
** same for both.
*/
static int winSectorSize(sqlite3_file *id){
- assert( id!=0 );
- return (int)(((winFile*)id)->sectorSize);
+ (void)id;
+ return SQLITE_DEFAULT_SECTOR_SIZE;
}
/*
** Return a vector of device characteristics.
*/
static int winDeviceCharacteristics(sqlite3_file *id){
- UNUSED_PARAMETER(id);
- return SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN;
+ winFile *p = (winFile*)id;
+ return SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN |
+ ((p->ctrlFlags & WINFILE_PSOW)?SQLITE_IOCAP_POWERSAFE_OVERWRITE:0);
}
#ifndef SQLITE_OMIT_WAL
@@ -30983,15 +34355,15 @@
/* Release/Acquire the system-level lock */
if( lockType==_SHM_UNLCK ){
- rc = UnlockFileEx(pFile->hFile.h, 0, nByte, 0, &ovlp);
+ rc = osUnlockFileEx(pFile->hFile.h, 0, nByte, 0, &ovlp);
}else{
- rc = LockFileEx(pFile->hFile.h, dwFlags, 0, nByte, 0, &ovlp);
+ rc = osLockFileEx(pFile->hFile.h, dwFlags, 0, nByte, 0, &ovlp);
}
if( rc!= 0 ){
rc = SQLITE_OK;
}else{
- pFile->lastErrno = GetLastError();
+ pFile->lastErrno = osGetLastError();
rc = SQLITE_BUSY;
}
@@ -31025,13 +34397,13 @@
int i;
if( p->mutex ) sqlite3_mutex_free(p->mutex);
for(i=0; i<p->nRegion; i++){
- bRc = UnmapViewOfFile(p->aRegion[i].pMap);
+ bRc = osUnmapViewOfFile(p->aRegion[i].pMap);
OSTRACE(("SHM-PURGE pid-%d unmap region=%d %s\n",
- (int)GetCurrentProcessId(), i,
+ (int)osGetCurrentProcessId(), i,
bRc ? "ok" : "failed"));
- bRc = CloseHandle(p->aRegion[i].hMap);
+ bRc = osCloseHandle(p->aRegion[i].hMap);
OSTRACE(("SHM-PURGE pid-%d close region=%d %s\n",
- (int)GetCurrentProcessId(), i,
+ (int)osGetCurrentProcessId(), i,
bRc ? "ok" : "failed"));
}
if( p->hFile.h != INVALID_HANDLE_VALUE ){
@@ -31041,7 +34413,9 @@
}
if( deleteFlag ){
SimulateIOErrorBenign(1);
+ sqlite3BeginBenignMalloc();
winDelete(pVfs, p->zFilename, 0);
+ sqlite3EndBenignMalloc();
SimulateIOErrorBenign(0);
}
*pp = p->pNext;
@@ -31073,17 +34447,18 @@
** allocate space for a new winShmNode and filename.
*/
p = sqlite3_malloc( sizeof(*p) );
- if( p==0 ) return SQLITE_NOMEM;
+ if( p==0 ) return SQLITE_IOERR_NOMEM;
memset(p, 0, sizeof(*p));
nName = sqlite3Strlen30(pDbFd->zPath);
- pNew = sqlite3_malloc( sizeof(*pShmNode) + nName + 15 );
+ pNew = sqlite3_malloc( sizeof(*pShmNode) + nName + 17 );
if( pNew==0 ){
sqlite3_free(p);
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
- memset(pNew, 0, sizeof(*pNew));
+ memset(pNew, 0, sizeof(*pNew) + nName + 17);
pNew->zFilename = (char*)&pNew[1];
sqlite3_snprintf(nName+15, pNew->zFilename, "%s-shm", pDbFd->zPath);
+ sqlite3FileSuffix3(pDbFd->zPath, pNew->zFilename);
/* Look to see if there is an existing winShmNode that can be used.
** If no matching winShmNode currently exists, create a new one.
@@ -31106,7 +34481,7 @@
pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST);
if( pShmNode->mutex==0 ){
- rc = SQLITE_NOMEM;
+ rc = SQLITE_IOERR_NOMEM;
goto shm_open_err;
}
@@ -31116,7 +34491,6 @@
SQLITE_OPEN_WAL | SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, /* Mode flags */
0);
if( SQLITE_OK!=rc ){
- rc = SQLITE_CANTOPEN_BKPT;
goto shm_open_err;
}
@@ -31126,7 +34500,8 @@
if( winShmSystemLock(pShmNode, _SHM_WRLCK, WIN_SHM_DMS, 1)==SQLITE_OK ){
rc = winTruncate((sqlite3_file *)&pShmNode->hFile, 0);
if( rc!=SQLITE_OK ){
- rc = SQLITE_IOERR_SHMOPEN;
+ rc = winLogError(SQLITE_IOERR_SHMOPEN, osGetLastError(),
+ "winOpenShm", pDbFd->zPath);
}
}
if( rc==SQLITE_OK ){
@@ -31311,7 +34686,7 @@
}
sqlite3_mutex_leave(pShmNode->mutex);
OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x %s\n",
- p->id, (int)GetCurrentProcessId(), p->sharedMask, p->exclMask,
+ p->id, (int)osGetCurrentProcessId(), p->sharedMask, p->exclMask,
rc ? "failed" : "ok"));
return rc;
}
@@ -31385,7 +34760,8 @@
*/
rc = winFileSize((sqlite3_file *)&pShmNode->hFile, &sz);
if( rc!=SQLITE_OK ){
- rc = SQLITE_IOERR_SHMSIZE;
+ rc = winLogError(SQLITE_IOERR_SHMSIZE, osGetLastError(),
+ "winShmMap1", pDbFd->zPath);
goto shmpage_out;
}
@@ -31399,7 +34775,8 @@
if( !isWrite ) goto shmpage_out;
rc = winTruncate((sqlite3_file *)&pShmNode->hFile, nByte);
if( rc!=SQLITE_OK ){
- rc = SQLITE_IOERR_SHMSIZE;
+ rc = winLogError(SQLITE_IOERR_SHMSIZE, osGetLastError(),
+ "winShmMap2", pDbFd->zPath);
goto shmpage_out;
}
}
@@ -31418,26 +34795,27 @@
HANDLE hMap; /* file-mapping handle */
void *pMap = 0; /* Mapped memory region */
- hMap = CreateFileMapping(pShmNode->hFile.h,
+ hMap = osCreateFileMapping(pShmNode->hFile.h,
NULL, PAGE_READWRITE, 0, nByte, NULL
);
OSTRACE(("SHM-MAP pid-%d create region=%d nbyte=%d %s\n",
- (int)GetCurrentProcessId(), pShmNode->nRegion, nByte,
+ (int)osGetCurrentProcessId(), pShmNode->nRegion, nByte,
hMap ? "ok" : "failed"));
if( hMap ){
int iOffset = pShmNode->nRegion*szRegion;
int iOffsetShift = iOffset % winSysInfo.dwAllocationGranularity;
- pMap = MapViewOfFile(hMap, FILE_MAP_WRITE | FILE_MAP_READ,
+ pMap = osMapViewOfFile(hMap, FILE_MAP_WRITE | FILE_MAP_READ,
0, iOffset - iOffsetShift, szRegion + iOffsetShift
);
OSTRACE(("SHM-MAP pid-%d map region=%d offset=%d size=%d %s\n",
- (int)GetCurrentProcessId(), pShmNode->nRegion, iOffset, szRegion,
- pMap ? "ok" : "failed"));
+ (int)osGetCurrentProcessId(), pShmNode->nRegion, iOffset,
+ szRegion, pMap ? "ok" : "failed"));
}
if( !pMap ){
- pShmNode->lastErrno = GetLastError();
- rc = SQLITE_IOERR;
- if( hMap ) CloseHandle(hMap);
+ pShmNode->lastErrno = osGetLastError();
+ rc = winLogError(SQLITE_IOERR_SHMMAP, pShmNode->lastErrno,
+ "winShmMap3", pDbFd->zPath);
+ if( hMap ) osCloseHandle(hMap);
goto shmpage_out;
}
@@ -31518,7 +34896,7 @@
*/
#if SQLITE_OS_WINCE==0
}else{
- zConverted = utf8ToMbcs(zFilename);
+ zConverted = sqlite3_win32_utf8_to_mbcs(zFilename);
#endif
}
/* caller will handle out of memory */
@@ -31535,7 +34913,7 @@
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"0123456789";
size_t i, j;
- char zTempPath[MAX_PATH+1];
+ char zTempPath[MAX_PATH+2];
/* It's odd to simulate an io-error here, but really this is just
** using the io-error infrastructure to test that SQLite handles this
@@ -31548,29 +34926,29 @@
}else if( isNT() ){
char *zMulti;
WCHAR zWidePath[MAX_PATH];
- GetTempPathW(MAX_PATH-30, zWidePath);
+ osGetTempPathW(MAX_PATH-30, zWidePath);
zMulti = unicodeToUtf8(zWidePath);
if( zMulti ){
sqlite3_snprintf(MAX_PATH-30, zTempPath, "%s", zMulti);
- free(zMulti);
+ sqlite3_free(zMulti);
}else{
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
+** Since the ANSI version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
#if SQLITE_OS_WINCE==0
}else{
char *zUtf8;
char zMbcsPath[MAX_PATH];
- GetTempPathA(MAX_PATH-30, zMbcsPath);
+ osGetTempPathA(MAX_PATH-30, zMbcsPath);
zUtf8 = sqlite3_win32_mbcs_to_utf8(zMbcsPath);
if( zUtf8 ){
sqlite3_snprintf(MAX_PATH-30, zTempPath, "%s", zUtf8);
- free(zUtf8);
+ sqlite3_free(zUtf8);
}else{
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
#endif
}
@@ -31578,14 +34956,14 @@
/* Check that the output buffer is large enough for the temporary file
** name. If it is not, return SQLITE_ERROR.
*/
- if( (sqlite3Strlen30(zTempPath) + sqlite3Strlen30(SQLITE_TEMP_FILE_PREFIX) + 17) >= nBuf ){
+ if( (sqlite3Strlen30(zTempPath) + sqlite3Strlen30(SQLITE_TEMP_FILE_PREFIX) + 18) >= nBuf ){
return SQLITE_ERROR;
}
for(i=sqlite3Strlen30(zTempPath); i>0 && zTempPath[i-1]=='\\'; i--){}
zTempPath[i] = 0;
- sqlite3_snprintf(nBuf-17, zBuf,
+ sqlite3_snprintf(nBuf-18, zBuf,
"%s\\"SQLITE_TEMP_FILE_PREFIX, zTempPath);
j = sqlite3Strlen30(zBuf);
sqlite3_randomness(15, &zBuf[j]);
@@ -31593,74 +34971,13 @@
zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
}
zBuf[j] = 0;
+ zBuf[j+1] = 0;
OSTRACE(("TEMP FILENAME: %s\n", zBuf));
return SQLITE_OK;
}
/*
-** The return value of getLastErrorMsg
-** is zero if the error message fits in the buffer, or non-zero
-** otherwise (if the message was truncated).
-*/
-static int getLastErrorMsg(int nBuf, char *zBuf){
- /* FormatMessage returns 0 on failure. Otherwise it
- ** returns the number of TCHARs written to the output
- ** buffer, excluding the terminating null char.
- */
- DWORD error = GetLastError();
- DWORD dwLen = 0;
- char *zOut = 0;
-
- if( isNT() ){
- WCHAR *zTempWide = NULL;
- dwLen = FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
- NULL,
- error,
- 0,
- (LPWSTR) &zTempWide,
- 0,
- 0);
- if( dwLen > 0 ){
- /* allocate a buffer and convert to UTF8 */
- zOut = unicodeToUtf8(zTempWide);
- /* free the system buffer allocated by FormatMessage */
- LocalFree(zTempWide);
- }
-/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
-** it's important to not reference them for WINCE builds.
-*/
-#if SQLITE_OS_WINCE==0
- }else{
- char *zTemp = NULL;
- dwLen = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
- NULL,
- error,
- 0,
- (LPSTR) &zTemp,
- 0,
- 0);
- if( dwLen > 0 ){
- /* allocate a buffer and convert to UTF8 */
- zOut = sqlite3_win32_mbcs_to_utf8(zTemp);
- /* free the system buffer allocated by FormatMessage */
- LocalFree(zTemp);
- }
-#endif
- }
- if( 0 == dwLen ){
- sqlite3_snprintf(nBuf, zBuf, "OsError 0x%x (%u)", error, error);
- }else{
- /* copy a maximum of nBuf chars to output buffer */
- sqlite3_snprintf(nBuf, zBuf, "%s", zOut);
- /* free the UTF8 buffer */
- free(zOut);
- }
- return 0;
-}
-
-/*
** Open a file.
*/
static int winOpen(
@@ -31671,6 +34988,7 @@
int *pOutFlags /* Status return flags */
){
HANDLE h;
+ DWORD lastErrno;
DWORD dwDesiredAccess;
DWORD dwShareMode;
DWORD dwCreationDisposition;
@@ -31681,11 +34999,12 @@
winFile *pFile = (winFile*)id;
void *zConverted; /* Filename in OS encoding */
const char *zUtf8Name = zName; /* Filename in UTF-8 encoding */
+ int cnt = 0;
/* If argument zPath is a NULL pointer, this function is required to open
** a temporary file. Use this buffer to store the file name in.
*/
- char zTmpname[MAX_PATH+1]; /* Buffer used to create temp filename */
+ char zTmpname[MAX_PATH+2]; /* Buffer used to create temp filename */
int rc = SQLITE_OK; /* Function Return Code */
#if !defined(NDEBUG) || SQLITE_OS_WINCE
@@ -31744,17 +35063,24 @@
*/
if( !zUtf8Name ){
assert(isDelete && !isOpenJournal);
- rc = getTempname(MAX_PATH+1, zTmpname);
+ rc = getTempname(MAX_PATH+2, zTmpname);
if( rc!=SQLITE_OK ){
return rc;
}
zUtf8Name = zTmpname;
}
+ /* Database filenames are double-zero terminated if they are not
+ ** URIs with parameters. Hence, they can always be passed into
+ ** sqlite3_uri_parameter().
+ */
+ assert( (eType!=SQLITE_OPEN_MAIN_DB) || (flags & SQLITE_OPEN_URI) ||
+ zUtf8Name[strlen(zUtf8Name)+1]==0 );
+
/* Convert the filename to the system encoding. */
zConverted = convertUtf8Filename(zUtf8Name);
if( zConverted==0 ){
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
if( isReadWrite ){
@@ -31800,39 +35126,40 @@
#endif
if( isNT() ){
- h = CreateFileW((WCHAR*)zConverted,
- dwDesiredAccess,
- dwShareMode,
- NULL,
- dwCreationDisposition,
- dwFlagsAndAttributes,
- NULL
- );
+ while( (h = osCreateFileW((LPCWSTR)zConverted,
+ dwDesiredAccess,
+ dwShareMode, NULL,
+ dwCreationDisposition,
+ dwFlagsAndAttributes,
+ NULL))==INVALID_HANDLE_VALUE &&
+ retryIoerr(&cnt, &lastErrno) ){}
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
+** Since the ANSI version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
#if SQLITE_OS_WINCE==0
}else{
- h = CreateFileA((char*)zConverted,
- dwDesiredAccess,
- dwShareMode,
- NULL,
- dwCreationDisposition,
- dwFlagsAndAttributes,
- NULL
- );
+ while( (h = osCreateFileA((LPCSTR)zConverted,
+ dwDesiredAccess,
+ dwShareMode, NULL,
+ dwCreationDisposition,
+ dwFlagsAndAttributes,
+ NULL))==INVALID_HANDLE_VALUE &&
+ retryIoerr(&cnt, &lastErrno) ){}
#endif
}
+ logIoerr(cnt);
+
OSTRACE(("OPEN %d %s 0x%lx %s\n",
h, zName, dwDesiredAccess,
h==INVALID_HANDLE_VALUE ? "failed" : "ok"));
if( h==INVALID_HANDLE_VALUE ){
- pFile->lastErrno = GetLastError();
- free(zConverted);
- if( isReadWrite ){
+ pFile->lastErrno = lastErrno;
+ winLogError(SQLITE_CANTOPEN, pFile->lastErrno, "winOpen", zUtf8Name);
+ sqlite3_free(zConverted);
+ if( isReadWrite && !isExclusive ){
return winOpen(pVfs, zName, id,
((flags|SQLITE_OPEN_READONLY)&~(SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE)), pOutFlags);
}else{
@@ -31855,14 +35182,16 @@
pFile->pVfs = pVfs;
pFile->pShm = 0;
pFile->zPath = zName;
- pFile->sectorSize = getSectorSize(pVfs, zUtf8Name);
+ if( sqlite3_uri_boolean(zName, "psow", SQLITE_POWERSAFE_OVERWRITE) ){
+ pFile->ctrlFlags |= WINFILE_PSOW;
+ }
#if SQLITE_OS_WINCE
if( isReadWrite && eType==SQLITE_OPEN_MAIN_DB
&& !winceCreateLock(zName, pFile)
){
- CloseHandle(h);
- free(zConverted);
+ osCloseHandle(h);
+ sqlite3_free(zConverted);
return SQLITE_CANTOPEN_BKPT;
}
if( isTemp ){
@@ -31870,7 +35199,7 @@
}else
#endif
{
- free(zConverted);
+ sqlite3_free(zConverted);
}
OpenCounter(+1);
@@ -31880,7 +35209,7 @@
/*
** Delete the named file.
**
-** Note that windows does not allow a file to be deleted if some other
+** Note that Windows does not allow a file to be deleted if some other
** process has it open. Sometimes a virus scanner or indexing program
** will open a journal file shortly after it is created in order to do
** whatever it does. While this other process is holding the
@@ -31889,15 +35218,14 @@
** to MX_DELETION_ATTEMPTs deletion attempts are run before giving
** up and returning an error.
*/
-#define MX_DELETION_ATTEMPTS 5
static int winDelete(
sqlite3_vfs *pVfs, /* Not used on win32 */
const char *zFilename, /* Name of file to delete */
int syncDir /* Not used on win32 */
){
int cnt = 0;
- DWORD rc;
- DWORD error = 0;
+ int rc;
+ DWORD lastErrno;
void *zConverted;
UNUSED_PARAMETER(pVfs);
UNUSED_PARAMETER(syncDir);
@@ -31905,36 +35233,34 @@
SimulateIOError(return SQLITE_IOERR_DELETE);
zConverted = convertUtf8Filename(zFilename);
if( zConverted==0 ){
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
if( isNT() ){
- do{
- DeleteFileW(zConverted);
- }while( ( ((rc = GetFileAttributesW(zConverted)) != INVALID_FILE_ATTRIBUTES)
- || ((error = GetLastError()) == ERROR_ACCESS_DENIED))
- && (++cnt < MX_DELETION_ATTEMPTS)
- && (Sleep(100), 1) );
+ rc = 1;
+ while( osGetFileAttributesW(zConverted)!=INVALID_FILE_ATTRIBUTES &&
+ (rc = osDeleteFileW(zConverted))==0 && retryIoerr(&cnt, &lastErrno) ){}
+ rc = rc ? SQLITE_OK : SQLITE_ERROR;
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
+** Since the ANSI version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
#if SQLITE_OS_WINCE==0
}else{
- do{
- DeleteFileA(zConverted);
- }while( ( ((rc = GetFileAttributesA(zConverted)) != INVALID_FILE_ATTRIBUTES)
- || ((error = GetLastError()) == ERROR_ACCESS_DENIED))
- && (++cnt < MX_DELETION_ATTEMPTS)
- && (Sleep(100), 1) );
+ rc = 1;
+ while( osGetFileAttributesA(zConverted)!=INVALID_FILE_ATTRIBUTES &&
+ (rc = osDeleteFileA(zConverted))==0 && retryIoerr(&cnt, &lastErrno) ){}
+ rc = rc ? SQLITE_OK : SQLITE_ERROR;
#endif
}
- free(zConverted);
- OSTRACE(("DELETE \"%s\" %s\n", zFilename,
- ( (rc==INVALID_FILE_ATTRIBUTES) && (error==ERROR_FILE_NOT_FOUND)) ?
- "ok" : "failed" ));
-
- return ( (rc == INVALID_FILE_ATTRIBUTES)
- && (error == ERROR_FILE_NOT_FOUND)) ? SQLITE_OK : SQLITE_IOERR_DELETE;
+ if( rc ){
+ rc = winLogError(SQLITE_IOERR_DELETE, lastErrno,
+ "winDelete", zFilename);
+ }else{
+ logIoerr(cnt);
+ }
+ sqlite3_free(zConverted);
+ OSTRACE(("DELETE \"%s\" %s\n", zFilename, (rc ? "failed" : "ok" )));
+ return rc;
}
/*
@@ -31948,20 +35274,23 @@
){
DWORD attr;
int rc = 0;
+ DWORD lastErrno;
void *zConverted;
UNUSED_PARAMETER(pVfs);
SimulateIOError( return SQLITE_IOERR_ACCESS; );
zConverted = convertUtf8Filename(zFilename);
if( zConverted==0 ){
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
if( isNT() ){
+ int cnt = 0;
WIN32_FILE_ATTRIBUTE_DATA sAttrData;
memset(&sAttrData, 0, sizeof(sAttrData));
- if( GetFileAttributesExW((WCHAR*)zConverted,
+ while( !(rc = osGetFileAttributesExW((LPCWSTR)zConverted,
GetFileExInfoStandard,
- &sAttrData) ){
+ &sAttrData)) && retryIoerr(&cnt, &lastErrno) ){}
+ if( rc ){
/* For an SQLITE_ACCESS_EXISTS query, treat a zero-length file
** as if it does not exist.
*/
@@ -31973,30 +35302,33 @@
attr = sAttrData.dwFileAttributes;
}
}else{
- if( GetLastError()!=ERROR_FILE_NOT_FOUND ){
- free(zConverted);
+ logIoerr(cnt);
+ if( lastErrno!=ERROR_FILE_NOT_FOUND ){
+ winLogError(SQLITE_IOERR_ACCESS, lastErrno, "winAccess", zFilename);
+ sqlite3_free(zConverted);
return SQLITE_IOERR_ACCESS;
}else{
attr = INVALID_FILE_ATTRIBUTES;
}
}
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
+** Since the ANSI version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
#if SQLITE_OS_WINCE==0
}else{
- attr = GetFileAttributesA((char*)zConverted);
+ attr = osGetFileAttributesA((char*)zConverted);
#endif
}
- free(zConverted);
+ sqlite3_free(zConverted);
switch( flags ){
case SQLITE_ACCESS_READ:
case SQLITE_ACCESS_EXISTS:
rc = attr!=INVALID_FILE_ATTRIBUTES;
break;
case SQLITE_ACCESS_READWRITE:
- rc = (attr & FILE_ATTRIBUTE_READONLY)==0;
+ rc = attr!=INVALID_FILE_ATTRIBUTES &&
+ (attr & FILE_ATTRIBUTE_READONLY)==0;
break;
default:
assert(!"Invalid flags argument");
@@ -32038,6 +35370,13 @@
void *zConverted;
char *zOut;
+ /* If this path name begins with "/X:", where "X" is any alphabetic
+ ** character, discard the initial "/" from the pathname.
+ */
+ if( zRelative[0]=='/' && sqlite3Isalpha(zRelative[1]) && zRelative[2]==':' ){
+ zRelative++;
+ }
+
/* It's odd to simulate an io-error here, but really this is just
** using the io-error infrastructure to test that SQLite handles this
** function failing. This function could fail if, for example, the
@@ -32046,117 +35385,50 @@
SimulateIOError( return SQLITE_ERROR );
UNUSED_PARAMETER(nFull);
zConverted = convertUtf8Filename(zRelative);
+ if( zConverted==0 ){
+ return SQLITE_IOERR_NOMEM;
+ }
if( isNT() ){
- WCHAR *zTemp;
- nByte = GetFullPathNameW((WCHAR*)zConverted, 0, 0, 0) + 3;
- zTemp = malloc( nByte*sizeof(zTemp[0]) );
+ LPWSTR zTemp;
+ nByte = osGetFullPathNameW((LPCWSTR)zConverted, 0, 0, 0) + 3;
+ zTemp = sqlite3_malloc( nByte*sizeof(zTemp[0]) );
if( zTemp==0 ){
- free(zConverted);
- return SQLITE_NOMEM;
+ sqlite3_free(zConverted);
+ return SQLITE_IOERR_NOMEM;
}
- GetFullPathNameW((WCHAR*)zConverted, nByte, zTemp, 0);
- free(zConverted);
+ osGetFullPathNameW((LPCWSTR)zConverted, nByte, zTemp, 0);
+ sqlite3_free(zConverted);
zOut = unicodeToUtf8(zTemp);
- free(zTemp);
+ sqlite3_free(zTemp);
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
+** Since the ANSI version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
#if SQLITE_OS_WINCE==0
}else{
char *zTemp;
- nByte = GetFullPathNameA((char*)zConverted, 0, 0, 0) + 3;
- zTemp = malloc( nByte*sizeof(zTemp[0]) );
+ nByte = osGetFullPathNameA((char*)zConverted, 0, 0, 0) + 3;
+ zTemp = sqlite3_malloc( nByte*sizeof(zTemp[0]) );
if( zTemp==0 ){
- free(zConverted);
- return SQLITE_NOMEM;
+ sqlite3_free(zConverted);
+ return SQLITE_IOERR_NOMEM;
}
- GetFullPathNameA((char*)zConverted, nByte, zTemp, 0);
- free(zConverted);
+ osGetFullPathNameA((char*)zConverted, nByte, zTemp, 0);
+ sqlite3_free(zConverted);
zOut = sqlite3_win32_mbcs_to_utf8(zTemp);
- free(zTemp);
+ sqlite3_free(zTemp);
#endif
}
if( zOut ){
sqlite3_snprintf(pVfs->mxPathname, zFull, "%s", zOut);
- free(zOut);
+ sqlite3_free(zOut);
return SQLITE_OK;
}else{
- return SQLITE_NOMEM;
+ return SQLITE_IOERR_NOMEM;
}
#endif
}
-/*
-** Get the sector size of the device used to store
-** file.
-*/
-static int getSectorSize(
- sqlite3_vfs *pVfs,
- const char *zRelative /* UTF-8 file name */
-){
- DWORD bytesPerSector = SQLITE_DEFAULT_SECTOR_SIZE;
- /* GetDiskFreeSpace is not supported under WINCE */
-#if SQLITE_OS_WINCE
- UNUSED_PARAMETER(pVfs);
- UNUSED_PARAMETER(zRelative);
-#else
- char zFullpath[MAX_PATH+1];
- int rc;
- DWORD dwRet = 0;
- DWORD dwDummy;
-
- /*
- ** We need to get the full path name of the file
- ** to get the drive letter to look up the sector
- ** size.
- */
- SimulateIOErrorBenign(1);
- rc = winFullPathname(pVfs, zRelative, MAX_PATH, zFullpath);
- SimulateIOErrorBenign(0);
- if( rc == SQLITE_OK )
- {
- void *zConverted = convertUtf8Filename(zFullpath);
- if( zConverted ){
- if( isNT() ){
- /* trim path to just drive reference */
- WCHAR *p = zConverted;
- for(;*p;p++){
- if( *p == '\\' ){
- *p = '\0';
- break;
- }
- }
- dwRet = GetDiskFreeSpaceW((WCHAR*)zConverted,
- &dwDummy,
- &bytesPerSector,
- &dwDummy,
- &dwDummy);
- }else{
- /* trim path to just drive reference */
- char *p = (char *)zConverted;
- for(;*p;p++){
- if( *p == '\\' ){
- *p = '\0';
- break;
- }
- }
- dwRet = GetDiskFreeSpaceA((char*)zConverted,
- &dwDummy,
- &bytesPerSector,
- &dwDummy,
- &dwDummy);
- }
- free(zConverted);
- }
- if( !dwRet ){
- bytesPerSector = SQLITE_DEFAULT_SECTOR_SIZE;
- }
- }
-#endif
- return (int) bytesPerSector;
-}
-
#ifndef SQLITE_OMIT_LOAD_EXTENSION
/*
** Interfaces for opening a shared library, finding entry points
@@ -32174,37 +35446,30 @@
return 0;
}
if( isNT() ){
- h = LoadLibraryW((WCHAR*)zConverted);
+ h = osLoadLibraryW((LPCWSTR)zConverted);
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
-** Since the ASCII version of these Windows API do not exist for WINCE,
+** Since the ANSI version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
#if SQLITE_OS_WINCE==0
}else{
- h = LoadLibraryA((char*)zConverted);
+ h = osLoadLibraryA((char*)zConverted);
#endif
}
- free(zConverted);
+ sqlite3_free(zConverted);
return (void*)h;
}
static void winDlError(sqlite3_vfs *pVfs, int nBuf, char *zBufOut){
UNUSED_PARAMETER(pVfs);
- getLastErrorMsg(nBuf, zBufOut);
+ getLastErrorMsg(osGetLastError(), nBuf, zBufOut);
}
-void (*winDlSym(sqlite3_vfs *pVfs, void *pHandle, const char *zSymbol))(void){
+static void (*winDlSym(sqlite3_vfs *pVfs, void *pHandle, const char *zSymbol))(void){
UNUSED_PARAMETER(pVfs);
-#if SQLITE_OS_WINCE
- /* The GetProcAddressA() routine is only available on wince. */
- return (void(*)(void))GetProcAddressA((HANDLE)pHandle, zSymbol);
-#else
- /* All other windows platforms expect GetProcAddress() to take
- ** an Ansi string regardless of the _UNICODE setting */
- return (void(*)(void))GetProcAddress((HANDLE)pHandle, zSymbol);
-#endif
+ return (void(*)(void))osGetProcAddressA((HANDLE)pHandle, zSymbol);
}
-void winDlClose(sqlite3_vfs *pVfs, void *pHandle){
+static void winDlClose(sqlite3_vfs *pVfs, void *pHandle){
UNUSED_PARAMETER(pVfs);
- FreeLibrary((HANDLE)pHandle);
+ osFreeLibrary((HANDLE)pHandle);
}
#else /* if SQLITE_OMIT_LOAD_EXTENSION is defined: */
#define winDlOpen 0
@@ -32226,23 +35491,23 @@
#else
if( sizeof(SYSTEMTIME)<=nBuf-n ){
SYSTEMTIME x;
- GetSystemTime(&x);
+ osGetSystemTime(&x);
memcpy(&zBuf[n], &x, sizeof(x));
n += sizeof(x);
}
if( sizeof(DWORD)<=nBuf-n ){
- DWORD pid = GetCurrentProcessId();
+ DWORD pid = osGetCurrentProcessId();
memcpy(&zBuf[n], &pid, sizeof(pid));
n += sizeof(pid);
}
if( sizeof(DWORD)<=nBuf-n ){
- DWORD cnt = GetTickCount();
+ DWORD cnt = osGetTickCount();
memcpy(&zBuf[n], &cnt, sizeof(cnt));
n += sizeof(cnt);
}
if( sizeof(LARGE_INTEGER)<=nBuf-n ){
LARGE_INTEGER i;
- QueryPerformanceCounter(&i);
+ osQueryPerformanceCounter(&i);
memcpy(&zBuf[n], &i, sizeof(i));
n += sizeof(i);
}
@@ -32255,7 +35520,7 @@
** Sleep for a little while. Return the amount of time slept.
*/
static int winSleep(sqlite3_vfs *pVfs, int microsec){
- Sleep((microsec+999)/1000);
+ osSleep((microsec+999)/1000);
UNUSED_PARAMETER(pVfs);
return ((microsec+999)/1000)*1000;
}
@@ -32276,7 +35541,8 @@
** epoch of noon in Greenwich on November 24, 4714 B.C according to the
** proleptic Gregorian calendar.
**
-** On success, return 0. Return 1 if the time and date cannot be found.
+** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date
+** cannot be found.
*/
static int winCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *piNow){
/* FILETIME structure is a 64-bit value representing the number of
@@ -32293,13 +35559,13 @@
#if SQLITE_OS_WINCE
SYSTEMTIME time;
- GetSystemTime(&time);
+ osGetSystemTime(&time);
/* if SystemTimeToFileTime() fails, it returns zero. */
- if (!SystemTimeToFileTime(&time,&ft)){
- return 1;
+ if (!osSystemTimeToFileTime(&time,&ft)){
+ return SQLITE_ERROR;
}
#else
- GetSystemTimeAsFileTime( &ft );
+ osGetSystemTimeAsFileTime( &ft );
#endif
*piNow = winFiletimeEpoch +
@@ -32312,7 +35578,7 @@
}
#endif
UNUSED_PARAMETER(pVfs);
- return 0;
+ return SQLITE_OK;
}
/*
@@ -32320,7 +35586,7 @@
** current time and date as a Julian Day number into *prNow and
** return 0. Return 1 if the time and date cannot be found.
*/
-int winCurrentTime(sqlite3_vfs *pVfs, double *prNow){
+static int winCurrentTime(sqlite3_vfs *pVfs, double *prNow){
int rc;
sqlite3_int64 i;
rc = winCurrentTimeInt64(pVfs, &i);
@@ -32332,8 +35598,8 @@
/*
** The idea is that this function works like a combination of
-** GetLastError() and FormatMessage() on windows (or errno and
-** strerror_r() on unix). After an error is returned by an OS
+** GetLastError() and FormatMessage() on Windows (or errno and
+** strerror_r() on Unix). After an error is returned by an OS
** function, SQLite calls this function with zBuf pointing to
** a buffer of nBuf bytes. The OS layer should populate the
** buffer with a nul-terminated UTF-8 encoded error message
@@ -32362,17 +35628,15 @@
*/
static int winGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
UNUSED_PARAMETER(pVfs);
- return getLastErrorMsg(nBuf, zBuf);
+ return getLastErrorMsg(osGetLastError(), nBuf, zBuf);
}
-
-
/*
** Initialize and deinitialize the operating system interface.
*/
SQLITE_API int sqlite3_os_init(void){
static sqlite3_vfs winVfs = {
- 2, /* iVersion */
+ 3, /* iVersion */
sizeof(winFile), /* szOsFile */
MAX_PATH, /* mxPathname */
0, /* pNext */
@@ -32391,18 +35655,26 @@
winCurrentTime, /* xCurrentTime */
winGetLastError, /* xGetLastError */
winCurrentTimeInt64, /* xCurrentTimeInt64 */
+ winSetSystemCall, /* xSetSystemCall */
+ winGetSystemCall, /* xGetSystemCall */
+ winNextSystemCall, /* xNextSystemCall */
};
+ /* Double-check that the aSyscall[] array has been constructed
+ ** correctly. See ticket [bb3a86e890c8e96ab] */
+ assert( ArraySize(aSyscall)==60 );
+
#ifndef SQLITE_OMIT_WAL
/* get memory map allocation granularity */
memset(&winSysInfo, 0, sizeof(SYSTEM_INFO));
- GetSystemInfo(&winSysInfo);
+ osGetSystemInfo(&winSysInfo);
assert(winSysInfo.dwAllocationGranularity > 0);
#endif
sqlite3_vfs_register(&winVfs, 1);
return SQLITE_OK;
}
+
SQLITE_API int sqlite3_os_end(void){
return SQLITE_OK;
}
@@ -32842,7 +36114,7 @@
PgHdr *pDirty, *pDirtyTail; /* List of dirty pages in LRU order */
PgHdr *pSynced; /* Last synced page in dirty page list */
int nRef; /* Number of referenced pages */
- int nMax; /* Configured cache size */
+ int szCache; /* Configured cache size */
int szPage; /* Size of every page in this cache */
int szExtra; /* Size of extra space for each page */
int bPurgeable; /* True if pages are on backing store */
@@ -32953,7 +36225,7 @@
if( p->pgno==1 ){
pCache->pPage1 = 0;
}
- sqlite3GlobalConfig.pcache.xUnpin(pCache->pCache, p, 0);
+ sqlite3GlobalConfig.pcache2.xUnpin(pCache->pCache, p->pPage, 0);
}
}
@@ -32963,18 +36235,18 @@
** functions are threadsafe.
*/
SQLITE_PRIVATE int sqlite3PcacheInitialize(void){
- if( sqlite3GlobalConfig.pcache.xInit==0 ){
+ if( sqlite3GlobalConfig.pcache2.xInit==0 ){
/* IMPLEMENTATION-OF: R-26801-64137 If the xInit() method is NULL, then the
** built-in default page cache is used instead of the application defined
** page cache. */
sqlite3PCacheSetDefault();
}
- return sqlite3GlobalConfig.pcache.xInit(sqlite3GlobalConfig.pcache.pArg);
+ return sqlite3GlobalConfig.pcache2.xInit(sqlite3GlobalConfig.pcache2.pArg);
}
SQLITE_PRIVATE void sqlite3PcacheShutdown(void){
- if( sqlite3GlobalConfig.pcache.xShutdown ){
+ if( sqlite3GlobalConfig.pcache2.xShutdown ){
/* IMPLEMENTATION-OF: R-26000-56589 The xShutdown() method may be NULL. */
- sqlite3GlobalConfig.pcache.xShutdown(sqlite3GlobalConfig.pcache.pArg);
+ sqlite3GlobalConfig.pcache2.xShutdown(sqlite3GlobalConfig.pcache2.pArg);
}
}
@@ -33003,7 +36275,7 @@
p->bPurgeable = bPurgeable;
p->xStress = xStress;
p->pStress = pStress;
- p->nMax = 100;
+ p->szCache = 100;
}
/*
@@ -33013,7 +36285,7 @@
SQLITE_PRIVATE void sqlite3PcacheSetPageSize(PCache *pCache, int szPage){
assert( pCache->nRef==0 && pCache->pDirty==0 );
if( pCache->pCache ){
- sqlite3GlobalConfig.pcache.xDestroy(pCache->pCache);
+ sqlite3GlobalConfig.pcache2.xDestroy(pCache->pCache);
pCache->pCache = 0;
pCache->pPage1 = 0;
}
@@ -33021,6 +36293,17 @@
}
/*
+** Compute the number of pages of cache requested.
+*/
+static int numberOfCachePages(PCache *p){
+ if( p->szCache>=0 ){
+ return p->szCache;
+ }else{
+ return (int)((-1024*(i64)p->szCache)/(p->szPage+p->szExtra));
+ }
+}
+
+/*
** Try to obtain a page from the cache.
*/
SQLITE_PRIVATE int sqlite3PcacheFetch(
@@ -33029,7 +36312,8 @@
int createFlag, /* If true, create page if it does not exist already */
PgHdr **ppPage /* Write the page here */
){
- PgHdr *pPage = 0;
+ sqlite3_pcache_page *pPage = 0;
+ PgHdr *pPgHdr = 0;
int eCreate;
assert( pCache!=0 );
@@ -33041,19 +36325,19 @@
*/
if( !pCache->pCache && createFlag ){
sqlite3_pcache *p;
- int nByte;
- nByte = pCache->szPage + pCache->szExtra + sizeof(PgHdr);
- p = sqlite3GlobalConfig.pcache.xCreate(nByte, pCache->bPurgeable);
+ p = sqlite3GlobalConfig.pcache2.xCreate(
+ pCache->szPage, pCache->szExtra + sizeof(PgHdr), pCache->bPurgeable
+ );
if( !p ){
return SQLITE_NOMEM;
}
- sqlite3GlobalConfig.pcache.xCachesize(p, pCache->nMax);
+ sqlite3GlobalConfig.pcache2.xCachesize(p, numberOfCachePages(pCache));
pCache->pCache = p;
}
eCreate = createFlag * (1 + (!pCache->bPurgeable || !pCache->pDirty));
if( pCache->pCache ){
- pPage = sqlite3GlobalConfig.pcache.xFetch(pCache->pCache, pgno, eCreate);
+ pPage = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache, pgno, eCreate);
}
if( !pPage && eCreate==1 ){
@@ -33075,39 +36359,49 @@
}
if( pPg ){
int rc;
+#ifdef SQLITE_LOG_CACHE_SPILL
+ sqlite3_log(SQLITE_FULL,
+ "spill page %d making room for %d - cache used: %d/%d",
+ pPg->pgno, pgno,
+ sqlite3GlobalConfig.pcache.xPagecount(pCache->pCache),
+ numberOfCachePages(pCache));
+#endif
rc = pCache->xStress(pCache->pStress, pPg);
if( rc!=SQLITE_OK && rc!=SQLITE_BUSY ){
return rc;
}
}
- pPage = sqlite3GlobalConfig.pcache.xFetch(pCache->pCache, pgno, 2);
+ pPage = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache, pgno, 2);
}
if( pPage ){
- if( !pPage->pData ){
- memset(pPage, 0, sizeof(PgHdr));
- pPage->pData = (void *)&pPage[1];
- pPage->pExtra = (void*)&((char *)pPage->pData)[pCache->szPage];
- memset(pPage->pExtra, 0, pCache->szExtra);
- pPage->pCache = pCache;
- pPage->pgno = pgno;
- }
- assert( pPage->pCache==pCache );
- assert( pPage->pgno==pgno );
- assert( pPage->pData==(void *)&pPage[1] );
- assert( pPage->pExtra==(void *)&((char *)&pPage[1])[pCache->szPage] );
+ pPgHdr = (PgHdr *)pPage->pExtra;
- if( 0==pPage->nRef ){
+ if( !pPgHdr->pPage ){
+ memset(pPgHdr, 0, sizeof(PgHdr));
+ pPgHdr->pPage = pPage;
+ pPgHdr->pData = pPage->pBuf;
+ pPgHdr->pExtra = (void *)&pPgHdr[1];
+ memset(pPgHdr->pExtra, 0, pCache->szExtra);
+ pPgHdr->pCache = pCache;
+ pPgHdr->pgno = pgno;
+ }
+ assert( pPgHdr->pCache==pCache );
+ assert( pPgHdr->pgno==pgno );
+ assert( pPgHdr->pData==pPage->pBuf );
+ assert( pPgHdr->pExtra==(void *)&pPgHdr[1] );
+
+ if( 0==pPgHdr->nRef ){
pCache->nRef++;
}
- pPage->nRef++;
+ pPgHdr->nRef++;
if( pgno==1 ){
- pCache->pPage1 = pPage;
+ pCache->pPage1 = pPgHdr;
}
}
- *ppPage = pPage;
- return (pPage==0 && eCreate) ? SQLITE_NOMEM : SQLITE_OK;
+ *ppPage = pPgHdr;
+ return (pPgHdr==0 && eCreate) ? SQLITE_NOMEM : SQLITE_OK;
}
/*
@@ -33154,7 +36448,7 @@
if( p->pgno==1 ){
pCache->pPage1 = 0;
}
- sqlite3GlobalConfig.pcache.xUnpin(pCache->pCache, p, 1);
+ sqlite3GlobalConfig.pcache2.xUnpin(pCache->pCache, p->pPage, 1);
}
/*
@@ -33212,7 +36506,7 @@
PCache *pCache = p->pCache;
assert( p->nRef>0 );
assert( newPgno>0 );
- sqlite3GlobalConfig.pcache.xRekey(pCache->pCache, p, p->pgno, newPgno);
+ sqlite3GlobalConfig.pcache2.xRekey(pCache->pCache, p->pPage, p->pgno,newPgno);
p->pgno = newPgno;
if( (p->flags&PGHDR_DIRTY) && (p->flags&PGHDR_NEED_SYNC) ){
pcacheRemoveFromDirtyList(p);
@@ -33249,7 +36543,7 @@
memset(pCache->pPage1->pData, 0, pCache->szPage);
pgno = 1;
}
- sqlite3GlobalConfig.pcache.xTruncate(pCache->pCache, pgno+1);
+ sqlite3GlobalConfig.pcache2.xTruncate(pCache->pCache, pgno+1);
}
}
@@ -33258,7 +36552,7 @@
*/
SQLITE_PRIVATE void sqlite3PcacheClose(PCache *pCache){
if( pCache->pCache ){
- sqlite3GlobalConfig.pcache.xDestroy(pCache->pCache);
+ sqlite3GlobalConfig.pcache2.xDestroy(pCache->pCache);
}
}
@@ -33370,7 +36664,7 @@
SQLITE_PRIVATE int sqlite3PcachePagecount(PCache *pCache){
int nPage = 0;
if( pCache->pCache ){
- nPage = sqlite3GlobalConfig.pcache.xPagecount(pCache->pCache);
+ nPage = sqlite3GlobalConfig.pcache2.xPagecount(pCache->pCache);
}
return nPage;
}
@@ -33380,7 +36674,7 @@
** Get the suggested cache-size value.
*/
SQLITE_PRIVATE int sqlite3PcacheGetCachesize(PCache *pCache){
- return pCache->nMax;
+ return numberOfCachePages(pCache);
}
#endif
@@ -33388,9 +36682,19 @@
** Set the suggested cache-size value.
*/
SQLITE_PRIVATE void sqlite3PcacheSetCachesize(PCache *pCache, int mxPage){
- pCache->nMax = mxPage;
+ pCache->szCache = mxPage;
if( pCache->pCache ){
- sqlite3GlobalConfig.pcache.xCachesize(pCache->pCache, mxPage);
+ sqlite3GlobalConfig.pcache2.xCachesize(pCache->pCache,
+ numberOfCachePages(pCache));
+ }
+}
+
+/*
+** Free up as much memory as possible from the page cache.
+*/
+SQLITE_PRIVATE void sqlite3PcacheShrink(PCache *pCache){
+ if( pCache->pCache ){
+ sqlite3GlobalConfig.pcache2.xShrink(pCache->pCache);
}
}
@@ -33433,6 +36737,38 @@
typedef struct PCache1 PCache1;
typedef struct PgHdr1 PgHdr1;
typedef struct PgFreeslot PgFreeslot;
+typedef struct PGroup PGroup;
+
+/* Each page cache (or PCache) belongs to a PGroup. A PGroup is a set
+** of one or more PCaches that are able to recycle each others unpinned
+** pages when they are under memory pressure. A PGroup is an instance of
+** the following object.
+**
+** This page cache implementation works in one of two modes:
+**
+** (1) Every PCache is the sole member of its own PGroup. There is
+** one PGroup per PCache.
+**
+** (2) There is a single global PGroup that all PCaches are a member
+** of.
+**
+** Mode 1 uses more memory (since PCache instances are not able to rob
+** unused pages from other PCaches) but it also operates without a mutex,
+** and is therefore often faster. Mode 2 requires a mutex in order to be
+** threadsafe, but recycles pages more efficiently.
+**
+** For mode (1), PGroup.mutex is NULL. For mode (2) there is only a single
+** PGroup which is the pcache1.grp global variable and its mutex is
+** SQLITE_MUTEX_STATIC_LRU.
+*/
+struct PGroup {
+ sqlite3_mutex *mutex; /* MUTEX_STATIC_LRU or NULL */
+ unsigned int nMaxPage; /* Sum of nMax for purgeable caches */
+ unsigned int nMinPage; /* Sum of nMin for purgeable caches */
+ unsigned int mxPinned; /* nMaxpage + 10 - nMinPage */
+ unsigned int nCurrentPage; /* Number of purgeable pages allocated */
+ PgHdr1 *pLruHead, *pLruTail; /* LRU list of unpinned pages */
+};
/* Each page cache is an instance of the following object. Every
** open database file (including each in-memory database and each
@@ -33445,17 +36781,19 @@
struct PCache1 {
/* Cache configuration parameters. Page size (szPage) and the purgeable
** flag (bPurgeable) are set when the cache is created. nMax may be
- ** modified at any time by a call to the pcache1CacheSize() method.
- ** The global mutex must be held when accessing nMax.
+ ** modified at any time by a call to the pcache1Cachesize() method.
+ ** The PGroup mutex must be held when accessing nMax.
*/
+ PGroup *pGroup; /* PGroup this cache belongs to */
int szPage; /* Size of allocated pages in bytes */
+ int szExtra; /* Size of extra space in bytes */
int bPurgeable; /* True if cache is purgeable */
unsigned int nMin; /* Minimum number of pages reserved */
unsigned int nMax; /* Configured "cache_size" value */
+ unsigned int n90pct; /* nMax*9/10 */
/* Hash table of all pages. The following variables may only be accessed
- ** when the accessor is holding the global mutex (see pcache1EnterMutex()
- ** and pcache1LeaveMutex()).
+ ** when the accessor is holding the PGroup mutex.
*/
unsigned int nRecyclable; /* Number of pages in the LRU list */
unsigned int nPage; /* Total number of pages in apHash */
@@ -33467,11 +36805,12 @@
/*
** Each cache entry is represented by an instance of the following
-** structure. A buffer of PgHdr1.pCache->szPage bytes is allocated
-** directly before this structure in memory (see the PGHDR1_TO_PAGE()
-** macro below).
+** structure. Unless SQLITE_PCACHE_SEPARATE_HEADER is defined, a buffer of
+** PgHdr1.pCache->szPage bytes is allocated directly before this structure
+** in memory.
*/
struct PgHdr1 {
+ sqlite3_pcache_page page;
unsigned int iKey; /* Key value (page number) */
PgHdr1 *pNext; /* Next in hash table chain */
PCache1 *pCache; /* Cache that currently owns this page */
@@ -33491,21 +36830,27 @@
** Global data used by this cache.
*/
static SQLITE_WSD struct PCacheGlobal {
- sqlite3_mutex *mutex; /* static mutex MUTEX_STATIC_LRU */
+ PGroup grp; /* The global PGroup for mode (2) */
- int nMaxPage; /* Sum of nMaxPage for purgeable caches */
- int nMinPage; /* Sum of nMinPage for purgeable caches */
- int nCurrentPage; /* Number of purgeable pages allocated */
- PgHdr1 *pLruHead, *pLruTail; /* LRU list of unpinned pages */
-
- /* Variables related to SQLITE_CONFIG_PAGECACHE settings. */
- int szSlot; /* Size of each free slot */
- int nSlot; /* The number of pcache slots */
- int nFreeSlot; /* Number of unused pcache slots */
- int nReserve; /* Try to keep nFreeSlot above this */
- void *pStart, *pEnd; /* Bounds of pagecache malloc range */
- PgFreeslot *pFree; /* Free page blocks */
- int isInit; /* True if initialized */
+ /* Variables related to SQLITE_CONFIG_PAGECACHE settings. The
+ ** szSlot, nSlot, pStart, pEnd, nReserve, and isInit values are all
+ ** fixed at sqlite3_initialize() time and do not require mutex protection.
+ ** The nFreeSlot and pFree values do require mutex protection.
+ */
+ int isInit; /* True if initialized */
+ int szSlot; /* Size of each free slot */
+ int nSlot; /* The number of pcache slots */
+ int nReserve; /* Try to keep nFreeSlot above this */
+ void *pStart, *pEnd; /* Bounds of pagecache malloc range */
+ /* Above requires no mutex. Use mutex below for variable that follow. */
+ sqlite3_mutex *mutex; /* Mutex for accessing the following: */
+ int nFreeSlot; /* Number of unused pcache slots */
+ PgFreeslot *pFree; /* Free page blocks */
+ /* The following value requires a mutex to change. We skip the mutex on
+ ** reading because (1) most platforms read a 32-bit integer atomically and
+ ** (2) even if an incorrect value is read, no great harm is done since this
+ ** is really just an optimization. */
+ int bUnderPressure; /* True if low on PAGECACHE memory */
} pcache1_g;
/*
@@ -33516,25 +36861,10 @@
#define pcache1 (GLOBAL(struct PCacheGlobal, pcache1_g))
/*
-** When a PgHdr1 structure is allocated, the associated PCache1.szPage
-** bytes of data are located directly before it in memory (i.e. the total
-** size of the allocation is sizeof(PgHdr1)+PCache1.szPage byte). The
-** PGHDR1_TO_PAGE() macro takes a pointer to a PgHdr1 structure as
-** an argument and returns a pointer to the associated block of szPage
-** bytes. The PAGE_TO_PGHDR1() macro does the opposite: its argument is
-** a pointer to a block of szPage bytes of data and the return value is
-** a pointer to the associated PgHdr1 structure.
-**
-** assert( PGHDR1_TO_PAGE(PAGE_TO_PGHDR1(pCache, X))==X );
+** Macros to enter and leave the PCache LRU mutex.
*/
-#define PGHDR1_TO_PAGE(p) (void*)(((char*)p) - p->pCache->szPage)
-#define PAGE_TO_PGHDR1(c, p) (PgHdr1*)(((char*)p) + c->szPage)
-
-/*
-** Macros to enter and leave the global LRU mutex.
-*/
-#define pcache1EnterMutex() sqlite3_mutex_enter(pcache1.mutex)
-#define pcache1LeaveMutex() sqlite3_mutex_leave(pcache1.mutex)
+#define pcache1EnterMutex(X) sqlite3_mutex_enter((X)->mutex)
+#define pcache1LeaveMutex(X) sqlite3_mutex_leave((X)->mutex)
/******************************************************************************/
/******** Page Allocation/SQLITE_CONFIG_PCACHE Related Functions **************/
@@ -33544,6 +36874,9 @@
** supplied to use for the page-cache by passing the SQLITE_CONFIG_PAGECACHE
** verb to sqlite3_config(). Parameter pBuf points to an allocation large
** enough to contain 'n' buffers of 'sz' bytes each.
+**
+** This routine is called from sqlite3_initialize() and so it is guaranteed
+** to be serialized already. There is no need for further mutexing.
*/
SQLITE_PRIVATE void sqlite3PCacheBufferSetup(void *pBuf, int sz, int n){
if( pcache1.isInit ){
@@ -33554,6 +36887,7 @@
pcache1.nReserve = n>90 ? 10 : (n/10 + 1);
pcache1.pStart = pBuf;
pcache1.pFree = 0;
+ pcache1.bUnderPressure = 0;
while( n-- ){
p = (PgFreeslot*)pBuf;
p->pNext = pcache1.pFree;
@@ -33569,32 +36903,36 @@
** configured using sqlite3_config(SQLITE_CONFIG_PAGECACHE) option. If no
** such buffer exists or there is no space left in it, this function falls
** back to sqlite3Malloc().
+**
+** Multiple threads can run this routine at the same time. Global variables
+** in pcache1 need to be protected via mutex.
*/
static void *pcache1Alloc(int nByte){
- void *p;
- assert( sqlite3_mutex_held(pcache1.mutex) );
+ void *p = 0;
+ assert( sqlite3_mutex_notheld(pcache1.grp.mutex) );
sqlite3StatusSet(SQLITE_STATUS_PAGECACHE_SIZE, nByte);
- if( nByte<=pcache1.szSlot && pcache1.pFree ){
- assert( pcache1.isInit );
+ if( nByte<=pcache1.szSlot ){
+ sqlite3_mutex_enter(pcache1.mutex);
p = (PgHdr1 *)pcache1.pFree;
- pcache1.pFree = pcache1.pFree->pNext;
- pcache1.nFreeSlot--;
- assert( pcache1.nFreeSlot>=0 );
- sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, 1);
- }else{
-
- /* Allocate a new buffer using sqlite3Malloc. Before doing so, exit the
- ** global pcache mutex and unlock the pager-cache object pCache. This is
- ** so that if the attempt to allocate a new buffer causes the the
- ** configured soft-heap-limit to be breached, it will be possible to
- ** reclaim memory from this pager-cache.
+ if( p ){
+ pcache1.pFree = pcache1.pFree->pNext;
+ pcache1.nFreeSlot--;
+ pcache1.bUnderPressure = pcache1.nFreeSlot<pcache1.nReserve;
+ assert( pcache1.nFreeSlot>=0 );
+ sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, 1);
+ }
+ sqlite3_mutex_leave(pcache1.mutex);
+ }
+ if( p==0 ){
+ /* Memory is not available in the SQLITE_CONFIG_PAGECACHE pool. Get
+ ** it from sqlite3Malloc instead.
*/
- pcache1LeaveMutex();
p = sqlite3Malloc(nByte);
- pcache1EnterMutex();
if( p ){
int sz = sqlite3MallocSize(p);
+ sqlite3_mutex_enter(pcache1.mutex);
sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, sz);
+ sqlite3_mutex_leave(pcache1.mutex);
}
sqlite3MemdebugSetType(p, MEMTYPE_PCACHE);
}
@@ -33604,25 +36942,30 @@
/*
** Free an allocated buffer obtained from pcache1Alloc().
*/
-static void pcache1Free(void *p){
- assert( sqlite3_mutex_held(pcache1.mutex) );
- if( p==0 ) return;
+static int pcache1Free(void *p){
+ int nFreed = 0;
+ if( p==0 ) return 0;
if( p>=pcache1.pStart && p<pcache1.pEnd ){
PgFreeslot *pSlot;
+ sqlite3_mutex_enter(pcache1.mutex);
sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, -1);
pSlot = (PgFreeslot*)p;
pSlot->pNext = pcache1.pFree;
pcache1.pFree = pSlot;
pcache1.nFreeSlot++;
+ pcache1.bUnderPressure = pcache1.nFreeSlot<pcache1.nReserve;
assert( pcache1.nFreeSlot<=pcache1.nSlot );
+ sqlite3_mutex_leave(pcache1.mutex);
}else{
- int iSize;
assert( sqlite3MemdebugHasType(p, MEMTYPE_PCACHE) );
sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
- iSize = sqlite3MallocSize(p);
- sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, -iSize);
+ nFreed = sqlite3MallocSize(p);
+ sqlite3_mutex_enter(pcache1.mutex);
+ sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, -nFreed);
+ sqlite3_mutex_leave(pcache1.mutex);
sqlite3_free(p);
}
+ return nFreed;
}
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
@@ -33630,7 +36973,6 @@
** Return the size of a pcache allocation
*/
static int pcache1MemSize(void *p){
- assert( sqlite3_mutex_held(pcache1.mutex) );
if( p>=pcache1.pStart && p<pcache1.pEnd ){
return pcache1.szSlot;
}else{
@@ -33648,18 +36990,37 @@
** Allocate a new page object initially associated with cache pCache.
*/
static PgHdr1 *pcache1AllocPage(PCache1 *pCache){
- int nByte = sizeof(PgHdr1) + pCache->szPage;
- void *pPg = pcache1Alloc(nByte);
- PgHdr1 *p;
- if( pPg ){
- p = PAGE_TO_PGHDR1(pCache, pPg);
- if( pCache->bPurgeable ){
- pcache1.nCurrentPage++;
- }
- }else{
- p = 0;
+ PgHdr1 *p = 0;
+ void *pPg;
+
+ /* The group mutex must be released before pcache1Alloc() is called. This
+ ** is because it may call sqlite3_release_memory(), which assumes that
+ ** this mutex is not held. */
+ assert( sqlite3_mutex_held(pCache->pGroup->mutex) );
+ pcache1LeaveMutex(pCache->pGroup);
+#ifdef SQLITE_PCACHE_SEPARATE_HEADER
+ pPg = pcache1Alloc(pCache->szPage);
+ p = sqlite3Malloc(sizeof(PgHdr1) + pCache->szExtra);
+ if( !pPg || !p ){
+ pcache1Free(pPg);
+ sqlite3_free(p);
+ pPg = 0;
}
- return p;
+#else
+ pPg = pcache1Alloc(sizeof(PgHdr1) + pCache->szPage + pCache->szExtra);
+ p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage];
+#endif
+ pcache1EnterMutex(pCache->pGroup);
+
+ if( pPg ){
+ p->page.pBuf = pPg;
+ p->page.pExtra = &p[1];
+ if( pCache->bPurgeable ){
+ pCache->pGroup->nCurrentPage++;
+ }
+ return p;
+ }
+ return 0;
}
/*
@@ -33671,10 +37032,15 @@
*/
static void pcache1FreePage(PgHdr1 *p){
if( ALWAYS(p) ){
- if( p->pCache->bPurgeable ){
- pcache1.nCurrentPage--;
+ PCache1 *pCache = p->pCache;
+ assert( sqlite3_mutex_held(p->pCache->pGroup->mutex) );
+ pcache1Free(p->page.pBuf);
+#ifdef SQLITE_PCACHE_SEPARATE_HEADER
+ sqlite3_free(p);
+#endif
+ if( pCache->bPurgeable ){
+ pCache->pGroup->nCurrentPage--;
}
- pcache1Free(PGHDR1_TO_PAGE(p));
}
}
@@ -33684,20 +37050,14 @@
** exists, this function falls back to sqlite3Malloc().
*/
SQLITE_PRIVATE void *sqlite3PageMalloc(int sz){
- void *p;
- pcache1EnterMutex();
- p = pcache1Alloc(sz);
- pcache1LeaveMutex();
- return p;
+ return pcache1Alloc(sz);
}
/*
** Free an allocated buffer obtained from sqlite3PageMalloc().
*/
SQLITE_PRIVATE void sqlite3PageFree(void *p){
- pcache1EnterMutex();
pcache1Free(p);
- pcache1LeaveMutex();
}
@@ -33712,15 +37072,14 @@
** for all page cache needs and we should not need to spill the
** allocation onto the heap.
**
-** Or, the heap is used for all page cache memory put the heap is
+** Or, the heap is used for all page cache memory but the heap is
** under memory pressure, then again it is desirable to avoid
** allocating a new page cache entry in order to avoid stressing
** the heap even further.
*/
static int pcache1UnderMemoryPressure(PCache1 *pCache){
- assert( sqlite3_mutex_held(pcache1.mutex) );
- if( pcache1.nSlot && pCache->szPage<=pcache1.szSlot ){
- return pcache1.nFreeSlot<pcache1.nReserve;
+ if( pcache1.nSlot && (pCache->szPage+pCache->szExtra)<=pcache1.szSlot ){
+ return pcache1.bUnderPressure;
}else{
return sqlite3HeapNearlyFull();
}
@@ -33733,25 +37092,25 @@
** This function is used to resize the hash table used by the cache passed
** as the first argument.
**
-** The global mutex must be held when this function is called.
+** The PCache mutex must be held when this function is called.
*/
static int pcache1ResizeHash(PCache1 *p){
PgHdr1 **apNew;
unsigned int nNew;
unsigned int i;
- assert( sqlite3_mutex_held(pcache1.mutex) );
+ assert( sqlite3_mutex_held(p->pGroup->mutex) );
nNew = p->nHash*2;
if( nNew<256 ){
nNew = 256;
}
- pcache1LeaveMutex();
+ pcache1LeaveMutex(p->pGroup);
if( p->nHash ){ sqlite3BeginBenignMalloc(); }
apNew = (PgHdr1 **)sqlite3_malloc(sizeof(PgHdr1 *)*nNew);
if( p->nHash ){ sqlite3EndBenignMalloc(); }
- pcache1EnterMutex();
+ pcache1EnterMutex(p->pGroup);
if( apNew ){
memset(apNew, 0, sizeof(PgHdr1 *)*nNew);
for(i=0; i<p->nHash; i++){
@@ -33774,25 +37133,33 @@
/*
** This function is used internally to remove the page pPage from the
-** global LRU list, if is part of it. If pPage is not part of the global
+** PGroup LRU list, if is part of it. If pPage is not part of the PGroup
** LRU list, then this function is a no-op.
**
-** The global mutex must be held when this function is called.
+** The PGroup mutex must be held when this function is called.
+**
+** If pPage is NULL then this routine is a no-op.
*/
static void pcache1PinPage(PgHdr1 *pPage){
- assert( sqlite3_mutex_held(pcache1.mutex) );
- if( pPage && (pPage->pLruNext || pPage==pcache1.pLruTail) ){
+ PCache1 *pCache;
+ PGroup *pGroup;
+
+ if( pPage==0 ) return;
+ pCache = pPage->pCache;
+ pGroup = pCache->pGroup;
+ assert( sqlite3_mutex_held(pGroup->mutex) );
+ if( pPage->pLruNext || pPage==pGroup->pLruTail ){
if( pPage->pLruPrev ){
pPage->pLruPrev->pLruNext = pPage->pLruNext;
}
if( pPage->pLruNext ){
pPage->pLruNext->pLruPrev = pPage->pLruPrev;
}
- if( pcache1.pLruHead==pPage ){
- pcache1.pLruHead = pPage->pLruNext;
+ if( pGroup->pLruHead==pPage ){
+ pGroup->pLruHead = pPage->pLruNext;
}
- if( pcache1.pLruTail==pPage ){
- pcache1.pLruTail = pPage->pLruPrev;
+ if( pGroup->pLruTail==pPage ){
+ pGroup->pLruTail = pPage->pLruPrev;
}
pPage->pLruNext = 0;
pPage->pLruPrev = 0;
@@ -33805,13 +37172,14 @@
** Remove the page supplied as an argument from the hash table
** (PCache1.apHash structure) that it is currently stored in.
**
-** The global mutex must be held when this function is called.
+** The PGroup mutex must be held when this function is called.
*/
static void pcache1RemoveFromHash(PgHdr1 *pPage){
unsigned int h;
PCache1 *pCache = pPage->pCache;
PgHdr1 **pp;
+ assert( sqlite3_mutex_held(pCache->pGroup->mutex) );
h = pPage->iKey % pCache->nHash;
for(pp=&pCache->apHash[h]; (*pp)!=pPage; pp=&(*pp)->pNext);
*pp = (*pp)->pNext;
@@ -33820,13 +37188,14 @@
}
/*
-** If there are currently more than pcache.nMaxPage pages allocated, try
-** to recycle pages to reduce the number allocated to pcache.nMaxPage.
+** If there are currently more than nMaxPage pages allocated, try
+** to recycle pages to reduce the number allocated to nMaxPage.
*/
-static void pcache1EnforceMaxPage(void){
- assert( sqlite3_mutex_held(pcache1.mutex) );
- while( pcache1.nCurrentPage>pcache1.nMaxPage && pcache1.pLruTail ){
- PgHdr1 *p = pcache1.pLruTail;
+static void pcache1EnforceMaxPage(PGroup *pGroup){
+ assert( sqlite3_mutex_held(pGroup->mutex) );
+ while( pGroup->nCurrentPage>pGroup->nMaxPage && pGroup->pLruTail ){
+ PgHdr1 *p = pGroup->pLruTail;
+ assert( p->pCache->pGroup==pGroup );
pcache1PinPage(p);
pcache1RemoveFromHash(p);
pcache1FreePage(p);
@@ -33838,15 +37207,15 @@
** greater than or equal to iLimit. Any pinned pages that meet this
** criteria are unpinned before they are discarded.
**
-** The global mutex must be held when this function is called.
+** The PCache mutex must be held when this function is called.
*/
static void pcache1TruncateUnsafe(
- PCache1 *pCache,
- unsigned int iLimit
+ PCache1 *pCache, /* The cache to truncate */
+ unsigned int iLimit /* Drop pages with this pgno or larger */
){
- TESTONLY( unsigned int nPage = 0; ) /* Used to assert pCache->nPage is correct */
+ TESTONLY( unsigned int nPage = 0; ) /* To assert pCache->nPage is correct */
unsigned int h;
- assert( sqlite3_mutex_held(pcache1.mutex) );
+ assert( sqlite3_mutex_held(pCache->pGroup->mutex) );
for(h=0; h<pCache->nHash; h++){
PgHdr1 **pp = &pCache->apHash[h];
PgHdr1 *pPage;
@@ -33876,8 +37245,10 @@
assert( pcache1.isInit==0 );
memset(&pcache1, 0, sizeof(pcache1));
if( sqlite3GlobalConfig.bCoreMutex ){
- pcache1.mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_LRU);
+ pcache1.grp.mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_LRU);
+ pcache1.mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_PMEM);
}
+ pcache1.grp.mxPinned = 10;
pcache1.isInit = 1;
return SQLITE_OK;
}
@@ -33898,19 +37269,52 @@
**
** Allocate a new cache.
*/
-static sqlite3_pcache *pcache1Create(int szPage, int bPurgeable){
- PCache1 *pCache;
+static sqlite3_pcache *pcache1Create(int szPage, int szExtra, int bPurgeable){
+ PCache1 *pCache; /* The newly created page cache */
+ PGroup *pGroup; /* The group the new page cache will belong to */
+ int sz; /* Bytes of memory required to allocate the new cache */
- pCache = (PCache1 *)sqlite3_malloc(sizeof(PCache1));
+ /*
+ ** The seperateCache variable is true if each PCache has its own private
+ ** PGroup. In other words, separateCache is true for mode (1) where no
+ ** mutexing is required.
+ **
+ ** * Always use a unified cache (mode-2) if ENABLE_MEMORY_MANAGEMENT
+ **
+ ** * Always use a unified cache in single-threaded applications
+ **
+ ** * Otherwise (if multi-threaded and ENABLE_MEMORY_MANAGEMENT is off)
+ ** use separate caches (mode-1)
+ */
+#if defined(SQLITE_ENABLE_MEMORY_MANAGEMENT) || SQLITE_THREADSAFE==0
+ const int separateCache = 0;
+#else
+ int separateCache = sqlite3GlobalConfig.bCoreMutex>0;
+#endif
+
+ assert( (szPage & (szPage-1))==0 && szPage>=512 && szPage<=65536 );
+ assert( szExtra < 300 );
+
+ sz = sizeof(PCache1) + sizeof(PGroup)*separateCache;
+ pCache = (PCache1 *)sqlite3_malloc(sz);
if( pCache ){
- memset(pCache, 0, sizeof(PCache1));
+ memset(pCache, 0, sz);
+ if( separateCache ){
+ pGroup = (PGroup*)&pCache[1];
+ pGroup->mxPinned = 10;
+ }else{
+ pGroup = &pcache1.grp;
+ }
+ pCache->pGroup = pGroup;
pCache->szPage = szPage;
+ pCache->szExtra = szExtra;
pCache->bPurgeable = (bPurgeable ? 1 : 0);
if( bPurgeable ){
pCache->nMin = 10;
- pcache1EnterMutex();
- pcache1.nMinPage += pCache->nMin;
- pcache1LeaveMutex();
+ pcache1EnterMutex(pGroup);
+ pGroup->nMinPage += pCache->nMin;
+ pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage;
+ pcache1LeaveMutex(pGroup);
}
}
return (sqlite3_pcache *)pCache;
@@ -33924,11 +37328,33 @@
static void pcache1Cachesize(sqlite3_pcache *p, int nMax){
PCache1 *pCache = (PCache1 *)p;
if( pCache->bPurgeable ){
- pcache1EnterMutex();
- pcache1.nMaxPage += (nMax - pCache->nMax);
+ PGroup *pGroup = pCache->pGroup;
+ pcache1EnterMutex(pGroup);
+ pGroup->nMaxPage += (nMax - pCache->nMax);
+ pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage;
pCache->nMax = nMax;
- pcache1EnforceMaxPage();
- pcache1LeaveMutex();
+ pCache->n90pct = pCache->nMax*9/10;
+ pcache1EnforceMaxPage(pGroup);
+ pcache1LeaveMutex(pGroup);
+ }
+}
+
+/*
+** Implementation of the sqlite3_pcache.xShrink method.
+**
+** Free up as much memory as possible.
+*/
+static void pcache1Shrink(sqlite3_pcache *p){
+ PCache1 *pCache = (PCache1*)p;
+ if( pCache->bPurgeable ){
+ PGroup *pGroup = pCache->pGroup;
+ int savedMaxPage;
+ pcache1EnterMutex(pGroup);
+ savedMaxPage = pGroup->nMaxPage;
+ pGroup->nMaxPage = 0;
+ pcache1EnforceMaxPage(pGroup);
+ pGroup->nMaxPage = savedMaxPage;
+ pcache1LeaveMutex(pGroup);
}
}
@@ -33937,9 +37363,10 @@
*/
static int pcache1Pagecount(sqlite3_pcache *p){
int n;
- pcache1EnterMutex();
- n = ((PCache1 *)p)->nPage;
- pcache1LeaveMutex();
+ PCache1 *pCache = (PCache1*)p;
+ pcache1EnterMutex(pCache->pGroup);
+ n = pCache->nPage;
+ pcache1LeaveMutex(pCache->pGroup);
return n;
}
@@ -33956,7 +37383,7 @@
** For a non-purgeable cache (a cache used as the storage for an in-memory
** database) there is really no difference between createFlag 1 and 2. So
** the calling function (pcache.c) will never have a createFlag of 1 on
-** a non-purgable cache.
+** a non-purgeable cache.
**
** There are three different approaches to obtaining space for a page,
** depending on the value of parameter createFlag (which may be 0, 1 or 2).
@@ -33997,31 +37424,53 @@
**
** 5. Otherwise, allocate and return a new page buffer.
*/
-static void *pcache1Fetch(sqlite3_pcache *p, unsigned int iKey, int createFlag){
+static sqlite3_pcache_page *pcache1Fetch(
+ sqlite3_pcache *p,
+ unsigned int iKey,
+ int createFlag
+){
unsigned int nPinned;
PCache1 *pCache = (PCache1 *)p;
+ PGroup *pGroup;
PgHdr1 *pPage = 0;
assert( pCache->bPurgeable || createFlag!=1 );
- pcache1EnterMutex();
- if( createFlag==1 ) sqlite3BeginBenignMalloc();
+ assert( pCache->bPurgeable || pCache->nMin==0 );
+ assert( pCache->bPurgeable==0 || pCache->nMin==10 );
+ assert( pCache->nMin==0 || pCache->bPurgeable );
+ pcache1EnterMutex(pGroup = pCache->pGroup);
- /* Search the hash table for an existing entry. */
+ /* Step 1: Search the hash table for an existing entry. */
if( pCache->nHash>0 ){
unsigned int h = iKey % pCache->nHash;
for(pPage=pCache->apHash[h]; pPage&&pPage->iKey!=iKey; pPage=pPage->pNext);
}
+ /* Step 2: Abort if no existing page is found and createFlag is 0 */
if( pPage || createFlag==0 ){
pcache1PinPage(pPage);
goto fetch_out;
}
- /* Step 3 of header comment. */
+ /* The pGroup local variable will normally be initialized by the
+ ** pcache1EnterMutex() macro above. But if SQLITE_MUTEX_OMIT is defined,
+ ** then pcache1EnterMutex() is a no-op, so we have to initialize the
+ ** local variable here. Delaying the initialization of pGroup is an
+ ** optimization: The common case is to exit the module before reaching
+ ** this point.
+ */
+#ifdef SQLITE_MUTEX_OMIT
+ pGroup = pCache->pGroup;
+#endif
+
+ /* Step 3: Abort if createFlag is 1 but the cache is nearly full */
+ assert( pCache->nPage >= pCache->nRecyclable );
nPinned = pCache->nPage - pCache->nRecyclable;
+ assert( pGroup->mxPinned == pGroup->nMaxPage + 10 - pGroup->nMinPage );
+ assert( pCache->n90pct == pCache->nMax*9/10 );
if( createFlag==1 && (
- nPinned>=(pcache1.nMaxPage+pCache->nMin-pcache1.nMinPage)
- || nPinned>=(pCache->nMax * 9 / 10)
+ nPinned>=pGroup->mxPinned
+ || nPinned>=pCache->n90pct
|| pcache1UnderMemoryPressure(pCache)
)){
goto fetch_out;
@@ -34031,20 +37480,30 @@
goto fetch_out;
}
- /* Step 4. Try to recycle a page buffer if appropriate. */
- if( pCache->bPurgeable && pcache1.pLruTail && (
+ /* Step 4. Try to recycle a page. */
+ if( pCache->bPurgeable && pGroup->pLruTail && (
(pCache->nPage+1>=pCache->nMax)
- || pcache1.nCurrentPage>=pcache1.nMaxPage
+ || pGroup->nCurrentPage>=pGroup->nMaxPage
|| pcache1UnderMemoryPressure(pCache)
)){
- pPage = pcache1.pLruTail;
+ PCache1 *pOther;
+ pPage = pGroup->pLruTail;
pcache1RemoveFromHash(pPage);
pcache1PinPage(pPage);
- if( pPage->pCache->szPage!=pCache->szPage ){
+ pOther = pPage->pCache;
+
+ /* We want to verify that szPage and szExtra are the same for pOther
+ ** and pCache. Assert that we can verify this by comparing sums. */
+ assert( (pCache->szPage & (pCache->szPage-1))==0 && pCache->szPage>=512 );
+ assert( pCache->szExtra<512 );
+ assert( (pOther->szPage & (pOther->szPage-1))==0 && pOther->szPage>=512 );
+ assert( pOther->szExtra<512 );
+
+ if( pOther->szPage+pOther->szExtra != pCache->szPage+pCache->szExtra ){
pcache1FreePage(pPage);
pPage = 0;
}else{
- pcache1.nCurrentPage -= (pPage->pCache->bPurgeable - pCache->bPurgeable);
+ pGroup->nCurrentPage -= (pOther->bPurgeable - pCache->bPurgeable);
}
}
@@ -34052,7 +37511,9 @@
** attempt to allocate a new one.
*/
if( !pPage ){
+ if( createFlag==1 ) sqlite3BeginBenignMalloc();
pPage = pcache1AllocPage(pCache);
+ if( createFlag==1 ) sqlite3EndBenignMalloc();
}
if( pPage ){
@@ -34063,7 +37524,7 @@
pPage->pCache = pCache;
pPage->pLruPrev = 0;
pPage->pLruNext = 0;
- *(void **)(PGHDR1_TO_PAGE(pPage)) = 0;
+ *(void **)pPage->page.pExtra = 0;
pCache->apHash[h] = pPage;
}
@@ -34071,9 +37532,8 @@
if( pPage && iKey>pCache->iMaxKey ){
pCache->iMaxKey = iKey;
}
- if( createFlag==1 ) sqlite3EndBenignMalloc();
- pcache1LeaveMutex();
- return (pPage ? PGHDR1_TO_PAGE(pPage) : 0);
+ pcache1LeaveMutex(pGroup);
+ return &pPage->page;
}
@@ -34082,40 +37542,41 @@
**
** Mark a page as unpinned (eligible for asynchronous recycling).
*/
-static void pcache1Unpin(sqlite3_pcache *p, void *pPg, int reuseUnlikely){
+static void pcache1Unpin(
+ sqlite3_pcache *p,
+ sqlite3_pcache_page *pPg,
+ int reuseUnlikely
+){
PCache1 *pCache = (PCache1 *)p;
- PgHdr1 *pPage = PAGE_TO_PGHDR1(pCache, pPg);
+ PgHdr1 *pPage = (PgHdr1 *)pPg;
+ PGroup *pGroup = pCache->pGroup;
assert( pPage->pCache==pCache );
- pcache1EnterMutex();
+ pcache1EnterMutex(pGroup);
/* It is an error to call this function if the page is already
- ** part of the global LRU list.
+ ** part of the PGroup LRU list.
*/
assert( pPage->pLruPrev==0 && pPage->pLruNext==0 );
- assert( pcache1.pLruHead!=pPage && pcache1.pLruTail!=pPage );
+ assert( pGroup->pLruHead!=pPage && pGroup->pLruTail!=pPage );
- if( reuseUnlikely || pcache1.nCurrentPage>pcache1.nMaxPage ){
+ if( reuseUnlikely || pGroup->nCurrentPage>pGroup->nMaxPage ){
pcache1RemoveFromHash(pPage);
pcache1FreePage(pPage);
}else{
- /* Add the page to the global LRU list. Normally, the page is added to
- ** the head of the list (last page to be recycled). However, if the
- ** reuseUnlikely flag passed to this function is true, the page is added
- ** to the tail of the list (first page to be recycled).
- */
- if( pcache1.pLruHead ){
- pcache1.pLruHead->pLruPrev = pPage;
- pPage->pLruNext = pcache1.pLruHead;
- pcache1.pLruHead = pPage;
+ /* Add the page to the PGroup LRU list. */
+ if( pGroup->pLruHead ){
+ pGroup->pLruHead->pLruPrev = pPage;
+ pPage->pLruNext = pGroup->pLruHead;
+ pGroup->pLruHead = pPage;
}else{
- pcache1.pLruTail = pPage;
- pcache1.pLruHead = pPage;
+ pGroup->pLruTail = pPage;
+ pGroup->pLruHead = pPage;
}
pCache->nRecyclable++;
}
- pcache1LeaveMutex();
+ pcache1LeaveMutex(pCache->pGroup);
}
/*
@@ -34123,18 +37584,18 @@
*/
static void pcache1Rekey(
sqlite3_pcache *p,
- void *pPg,
+ sqlite3_pcache_page *pPg,
unsigned int iOld,
unsigned int iNew
){
PCache1 *pCache = (PCache1 *)p;
- PgHdr1 *pPage = PAGE_TO_PGHDR1(pCache, pPg);
+ PgHdr1 *pPage = (PgHdr1 *)pPg;
PgHdr1 **pp;
unsigned int h;
assert( pPage->iKey==iOld );
assert( pPage->pCache==pCache );
- pcache1EnterMutex();
+ pcache1EnterMutex(pCache->pGroup);
h = iOld%pCache->nHash;
pp = &pCache->apHash[h];
@@ -34151,7 +37612,7 @@
pCache->iMaxKey = iNew;
}
- pcache1LeaveMutex();
+ pcache1LeaveMutex(pCache->pGroup);
}
/*
@@ -34163,12 +37624,12 @@
*/
static void pcache1Truncate(sqlite3_pcache *p, unsigned int iLimit){
PCache1 *pCache = (PCache1 *)p;
- pcache1EnterMutex();
+ pcache1EnterMutex(pCache->pGroup);
if( iLimit<=pCache->iMaxKey ){
pcache1TruncateUnsafe(pCache, iLimit);
pCache->iMaxKey = iLimit-1;
}
- pcache1LeaveMutex();
+ pcache1LeaveMutex(pCache->pGroup);
}
/*
@@ -34178,13 +37639,17 @@
*/
static void pcache1Destroy(sqlite3_pcache *p){
PCache1 *pCache = (PCache1 *)p;
+ PGroup *pGroup = pCache->pGroup;
assert( pCache->bPurgeable || (pCache->nMax==0 && pCache->nMin==0) );
- pcache1EnterMutex();
+ pcache1EnterMutex(pGroup);
pcache1TruncateUnsafe(pCache, 0);
- pcache1.nMaxPage -= pCache->nMax;
- pcache1.nMinPage -= pCache->nMin;
- pcache1EnforceMaxPage();
- pcache1LeaveMutex();
+ assert( pGroup->nMaxPage >= pCache->nMax );
+ pGroup->nMaxPage -= pCache->nMax;
+ assert( pGroup->nMinPage >= pCache->nMin );
+ pGroup->nMinPage -= pCache->nMin;
+ pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage;
+ pcache1EnforceMaxPage(pGroup);
+ pcache1LeaveMutex(pGroup);
sqlite3_free(pCache->apHash);
sqlite3_free(pCache);
}
@@ -34195,7 +37660,8 @@
** already provided an alternative.
*/
SQLITE_PRIVATE void sqlite3PCacheSetDefault(void){
- static const sqlite3_pcache_methods defaultMethods = {
+ static const sqlite3_pcache_methods2 defaultMethods = {
+ 1, /* iVersion */
0, /* pArg */
pcache1Init, /* xInit */
pcache1Shutdown, /* xShutdown */
@@ -34206,9 +37672,10 @@
pcache1Unpin, /* xUnpin */
pcache1Rekey, /* xRekey */
pcache1Truncate, /* xTruncate */
- pcache1Destroy /* xDestroy */
+ pcache1Destroy, /* xDestroy */
+ pcache1Shrink /* xShrink */
};
- sqlite3_config(SQLITE_CONFIG_PCACHE, &defaultMethods);
+ sqlite3_config(SQLITE_CONFIG_PCACHE2, &defaultMethods);
}
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
@@ -34223,16 +37690,21 @@
*/
SQLITE_PRIVATE int sqlite3PcacheReleaseMemory(int nReq){
int nFree = 0;
+ assert( sqlite3_mutex_notheld(pcache1.grp.mutex) );
+ assert( sqlite3_mutex_notheld(pcache1.mutex) );
if( pcache1.pStart==0 ){
PgHdr1 *p;
- pcache1EnterMutex();
- while( (nReq<0 || nFree<nReq) && ((p=pcache1.pLruTail)!=0) ){
- nFree += pcache1MemSize(PGHDR1_TO_PAGE(p));
+ pcache1EnterMutex(&pcache1.grp);
+ while( (nReq<0 || nFree<nReq) && ((p=pcache1.grp.pLruTail)!=0) ){
+ nFree += pcache1MemSize(p->page.pBuf);
+#ifdef SQLITE_PCACHE_SEPARATE_HEADER
+ nFree += sqlite3MemSize(p);
+#endif
pcache1PinPage(p);
pcache1RemoveFromHash(p);
pcache1FreePage(p);
}
- pcache1LeaveMutex();
+ pcache1LeaveMutex(&pcache1.grp);
}
return nFree;
}
@@ -34251,12 +37723,12 @@
){
PgHdr1 *p;
int nRecyclable = 0;
- for(p=pcache1.pLruHead; p; p=p->pLruNext){
+ for(p=pcache1.grp.pLruHead; p; p=p->pLruNext){
nRecyclable++;
}
- *pnCurrent = pcache1.nCurrentPage;
- *pnMax = pcache1.nMaxPage;
- *pnMin = pcache1.nMinPage;
+ *pnCurrent = pcache1.grp.nCurrentPage;
+ *pnMax = (int)pcache1.grp.nMaxPage;
+ *pnMin = (int)pcache1.grp.nMinPage;
*pnRecyclable = nRecyclable;
}
#endif
@@ -34730,23 +38202,30 @@
#define _WAL_H_
+/* Additional values that can be added to the sync_flags argument of
+** sqlite3WalFrames():
+*/
+#define WAL_SYNC_TRANSACTIONS 0x20 /* Sync at the end of each transaction */
+#define SQLITE_SYNC_MASK 0x13 /* Mask off the SQLITE_SYNC_* values */
+
#ifdef SQLITE_OMIT_WAL
-# define sqlite3WalOpen(x,y,z) 0
-# define sqlite3WalClose(w,x,y,z) 0
-# define sqlite3WalBeginReadTransaction(y,z) 0
+# define sqlite3WalOpen(x,y,z) 0
+# define sqlite3WalLimit(x,y)
+# define sqlite3WalClose(w,x,y,z) 0
+# define sqlite3WalBeginReadTransaction(y,z) 0
# define sqlite3WalEndReadTransaction(z)
-# define sqlite3WalRead(v,w,x,y,z) 0
-# define sqlite3WalDbsize(y) 0
-# define sqlite3WalBeginWriteTransaction(y) 0
-# define sqlite3WalEndWriteTransaction(x) 0
-# define sqlite3WalUndo(x,y,z) 0
+# define sqlite3WalRead(v,w,x,y,z) 0
+# define sqlite3WalDbsize(y) 0
+# define sqlite3WalBeginWriteTransaction(y) 0
+# define sqlite3WalEndWriteTransaction(x) 0
+# define sqlite3WalUndo(x,y,z) 0
# define sqlite3WalSavepoint(y,z)
-# define sqlite3WalSavepointUndo(y,z) 0
-# define sqlite3WalFrames(u,v,w,x,y,z) 0
-# define sqlite3WalCheckpoint(u,v,w,x) 0
-# define sqlite3WalCallback(z) 0
-# define sqlite3WalExclusiveMode(y,z) 0
-# define sqlite3WalHeapMemory(z) 0
+# define sqlite3WalSavepointUndo(y,z) 0
+# define sqlite3WalFrames(u,v,w,x,y,z) 0
+# define sqlite3WalCheckpoint(r,s,t,u,v,w,x,y,z) 0
+# define sqlite3WalCallback(z) 0
+# define sqlite3WalExclusiveMode(y,z) 0
+# define sqlite3WalHeapMemory(z) 0
#else
#define WAL_SAVEPOINT_NDATA 4
@@ -34757,9 +38236,12 @@
typedef struct Wal Wal;
/* Open and close a connection to a write-ahead log. */
-SQLITE_PRIVATE int sqlite3WalOpen(sqlite3_vfs*, sqlite3_file*, const char *zName, int, Wal**);
+SQLITE_PRIVATE int sqlite3WalOpen(sqlite3_vfs*, sqlite3_file*, const char *, int, i64, Wal**);
SQLITE_PRIVATE int sqlite3WalClose(Wal *pWal, int sync_flags, int, u8 *);
+/* Set the limiting size of a WAL file. */
+SQLITE_PRIVATE void sqlite3WalLimit(Wal*, i64);
+
/* Used by readers to open (lock) and close (unlock) a snapshot. A
** snapshot is like a read-transaction. It is the state of the database
** at an instant in time. sqlite3WalOpenSnapshot gets a read lock and
@@ -34797,9 +38279,14 @@
/* Copy pages from the log to the database file */
SQLITE_PRIVATE int sqlite3WalCheckpoint(
Wal *pWal, /* Write-ahead log connection */
+ int eMode, /* One of PASSIVE, FULL and RESTART */
+ int (*xBusy)(void*), /* Function to call when busy */
+ void *pBusyArg, /* Context argument for xBusyHandler */
int sync_flags, /* Flags to sync db file with (or 0) */
int nBuf, /* Size of buffer nBuf */
- u8 *zBuf /* Temporary buffer to use */
+ u8 *zBuf, /* Temporary buffer to use */
+ int *pnLog, /* OUT: Number of frames in WAL */
+ int *pnCkpt /* OUT: Number of backfilled frames in WAL */
);
/* Return the value to pass to a sqlite3_wal_hook callback, the
@@ -35420,6 +38907,7 @@
u8 noSync; /* Do not sync the journal if true */
u8 fullSync; /* Do extra syncs of the journal for robustness */
u8 ckptSyncFlags; /* SYNC_NORMAL or SYNC_FULL for checkpoint */
+ u8 walSyncFlags; /* SYNC_NORMAL or SYNC_FULL for wal writes */
u8 syncFlags; /* SYNC_NORMAL or SYNC_FULL otherwise */
u8 tempFile; /* zFilename is a temporary file */
u8 readOnly; /* True for a read-only database */
@@ -35474,8 +38962,8 @@
char *zJournal; /* Name of the journal file */
int (*xBusyHandler)(void*); /* Function to call when busy */
void *pBusyHandlerArg; /* Context argument for xBusyHandler */
+ int nHit, nMiss; /* Total cache hits and misses */
#ifdef SQLITE_TEST
- int nHit, nMiss; /* Cache hits and missing */
int nRead, nWrite; /* Database pages read/written */
#endif
void (*xReiniter)(DbPage*); /* Call this routine when reloading pages */
@@ -35590,7 +39078,7 @@
#else
# define pagerUseWal(x) 0
# define pagerRollbackWal(x) 0
-# define pagerWalFrames(v,w,x,y,z) 0
+# define pagerWalFrames(v,w,x,y) 0
# define pagerOpenWalIfPresent(z) SQLITE_OK
# define pagerBeginReadTransaction(z) SQLITE_OK
#endif
@@ -37281,15 +40769,20 @@
&& (pPager->eState>=PAGER_WRITER_DBMOD || pPager->eState==PAGER_OPEN)
){
i64 currentSize, newSize;
+ int szPage = pPager->pageSize;
assert( pPager->eLock==EXCLUSIVE_LOCK );
/* TODO: Is it safe to use Pager.dbFileSize here? */
rc = sqlite3OsFileSize(pPager->fd, ¤tSize);
- newSize = pPager->pageSize*(i64)nPage;
+ newSize = szPage*(i64)nPage;
if( rc==SQLITE_OK && currentSize!=newSize ){
if( currentSize>newSize ){
rc = sqlite3OsTruncate(pPager->fd, newSize);
- }else{
- rc = sqlite3OsWrite(pPager->fd, "", 1, newSize-1);
+ }else if( (currentSize+szPage)<=newSize ){
+ char *pTmp = pPager->pTmpSpace;
+ memset(pTmp, 0, szPage);
+ testcase( (newSize-szPage) == currentSize );
+ testcase( (newSize-szPage) > currentSize );
+ rc = sqlite3OsWrite(pPager->fd, pTmp, szPage, newSize-szPage);
}
if( rc==SQLITE_OK ){
pPager->dbFileSize = nPage;
@@ -37312,23 +40805,36 @@
** the value returned by the xSectorSize() method rounded up to 32 if
** it is less than 32, or rounded down to MAX_SECTOR_SIZE if it
** is greater than MAX_SECTOR_SIZE.
+**
+** If the file has the SQLITE_IOCAP_POWERSAFE_OVERWRITE property, then set
+** the effective sector size to its minimum value (512). The purpose of
+** pPager->sectorSize is to define the "blast radius" of bytes that
+** might change if a crash occurs while writing to a single byte in
+** that range. But with POWERSAFE_OVERWRITE, the blast radius is zero
+** (that is what POWERSAFE_OVERWRITE means), so we minimize the sector
+** size. For backwards compatibility of the rollback journal file format,
+** we cannot reduce the effective sector size below 512.
*/
static void setSectorSize(Pager *pPager){
assert( isOpen(pPager->fd) || pPager->tempFile );
- if( !pPager->tempFile ){
+ if( pPager->tempFile
+ || (sqlite3OsDeviceCharacteristics(pPager->fd) &
+ SQLITE_IOCAP_POWERSAFE_OVERWRITE)!=0
+ ){
/* Sector size doesn't matter for temporary files. Also, the file
** may not have been opened yet, in which case the OsSectorSize()
- ** call will segfault.
- */
- pPager->sectorSize = sqlite3OsSectorSize(pPager->fd);
- }
- if( pPager->sectorSize<32 ){
+ ** call will segfault. */
pPager->sectorSize = 512;
- }
- if( pPager->sectorSize>MAX_SECTOR_SIZE ){
- assert( MAX_SECTOR_SIZE>=512 );
- pPager->sectorSize = MAX_SECTOR_SIZE;
+ }else{
+ pPager->sectorSize = sqlite3OsSectorSize(pPager->fd);
+ if( pPager->sectorSize<32 ){
+ pPager->sectorSize = 512;
+ }
+ if( pPager->sectorSize>MAX_SECTOR_SIZE ){
+ assert( MAX_SECTOR_SIZE>=512 );
+ pPager->sectorSize = MAX_SECTOR_SIZE;
+ }
}
}
@@ -37501,7 +41007,6 @@
rc = pager_playback_one_page(pPager,&pPager->journalOff,0,1,0);
if( rc!=SQLITE_OK ){
if( rc==SQLITE_DONE ){
- rc = SQLITE_OK;
pPager->journalOff = szJ;
break;
}else if( rc==SQLITE_IOERR_SHORT_READ ){
@@ -37532,10 +41037,11 @@
** SQLITE_FCNTL_DB_UNCHANGED file-control method to disable the
** assertion that the transaction counter was modified.
*/
- assert(
- pPager->fd->pMethods==0 ||
- sqlite3OsFileControl(pPager->fd,SQLITE_FCNTL_DB_UNCHANGED,0)>=SQLITE_OK
- );
+#ifdef SQLITE_DEBUG
+ if( pPager->fd->pMethods ){
+ sqlite3OsFileControlHint(pPager->fd,SQLITE_FCNTL_DB_UNCHANGED,0);
+ }
+#endif
/* If this playback is happening automatically as a result of an IO or
** malloc error that occurred after the change-counter was updated but
@@ -37553,10 +41059,10 @@
rc = readMasterJournal(pPager->jfd, zMaster, pPager->pVfs->mxPathname+1);
testcase( rc!=SQLITE_OK );
}
- if( rc==SQLITE_OK && !pPager->noSync
+ if( rc==SQLITE_OK
&& (pPager->eState>=PAGER_WRITER_DBMOD || pPager->eState==PAGER_OPEN)
){
- rc = sqlite3OsSync(pPager->fd, pPager->syncFlags);
+ rc = sqlite3PagerSync(pPager);
}
if( rc==SQLITE_OK ){
rc = pager_end_transaction(pPager, zMaster[0]!='\0');
@@ -37649,6 +41155,28 @@
return rc;
}
+/*
+** Update the value of the change-counter at offsets 24 and 92 in
+** the header and the sqlite version number at offset 96.
+**
+** This is an unconditional update. See also the pager_incr_changecounter()
+** routine which only updates the change-counter if the update is actually
+** needed, as determined by the pPager->changeCountDone state variable.
+*/
+static void pager_write_changecounter(PgHdr *pPg){
+ u32 change_counter;
+
+ /* Increment the value just read and write it back to byte 24. */
+ change_counter = sqlite3Get4byte((u8*)pPg->pPager->dbFileVers)+1;
+ put32bits(((char*)pPg->pData)+24, change_counter);
+
+ /* Also store the SQLite version number in bytes 96..99 and in
+ ** bytes 92..95 store the change counter for which the version number
+ ** is valid. */
+ put32bits(((char*)pPg->pData)+92, change_counter);
+ put32bits(((char*)pPg->pData)+96, SQLITE_VERSION_NUMBER);
+}
+
#ifndef SQLITE_OMIT_WAL
/*
** This function is invoked once for each page that has already been
@@ -37719,34 +41247,11 @@
return rc;
}
-
-/*
-** Update the value of the change-counter at offsets 24 and 92 in
-** the header and the sqlite version number at offset 96.
-**
-** This is an unconditional update. See also the pager_incr_changecounter()
-** routine which only updates the change-counter if the update is actually
-** needed, as determined by the pPager->changeCountDone state variable.
-*/
-static void pager_write_changecounter(PgHdr *pPg){
- u32 change_counter;
-
- /* Increment the value just read and write it back to byte 24. */
- change_counter = sqlite3Get4byte((u8*)pPg->pPager->dbFileVers)+1;
- put32bits(((char*)pPg->pData)+24, change_counter);
-
- /* Also store the SQLite version number in bytes 96..99 and in
- ** bytes 92..95 store the change counter for which the version number
- ** is valid. */
- put32bits(((char*)pPg->pData)+92, change_counter);
- put32bits(((char*)pPg->pData)+96, SQLITE_VERSION_NUMBER);
-}
-
/*
** This function is a wrapper around sqlite3WalFrames(). As well as logging
** the contents of the list of pages headed by pList (connected by pDirty),
** this function notifies any active backup processes that the pages have
-** changed.
+** changed.
**
** The list of pages passed into this routine is always sorted by page number.
** Hence, if page 1 appears anywhere on the list, it will be the first page.
@@ -37755,8 +41260,7 @@
Pager *pPager, /* Pager object */
PgHdr *pList, /* List of frames to log */
Pgno nTruncate, /* Database size after this commit */
- int isCommit, /* True if this is a commit */
- int syncFlags /* Flags to pass to OsSync() (or 0) */
+ int isCommit /* True if this is a commit */
){
int rc; /* Return code */
#if defined(SQLITE_DEBUG) || defined(SQLITE_CHECK_PAGES)
@@ -37764,6 +41268,7 @@
#endif
assert( pPager->pWal );
+ assert( pList );
#ifdef SQLITE_DEBUG
/* Verify that the page list is in accending order */
for(p=pList; p && p->pDirty; p=p->pDirty){
@@ -37771,9 +41276,22 @@
}
#endif
+ if( isCommit ){
+ /* If a WAL transaction is being committed, there is no point in writing
+ ** any pages with page numbers greater than nTruncate into the WAL file.
+ ** They will never be read by any client. So remove them from the pDirty
+ ** list here. */
+ PgHdr *p;
+ PgHdr **ppNext = &pList;
+ for(p=pList; (*ppNext = p); p=p->pDirty){
+ if( p->pgno<=nTruncate ) ppNext = &p->pDirty;
+ }
+ assert( pList );
+ }
+
if( pList->pgno==1 ) pager_write_changecounter(pList);
rc = sqlite3WalFrames(pPager->pWal,
- pPager->pageSize, pList, nTruncate, isCommit, syncFlags
+ pPager->pageSize, pList, nTruncate, isCommit, pPager->walSyncFlags
);
if( rc==SQLITE_OK && pPager->pBackup ){
PgHdr *p;
@@ -37783,6 +41301,7 @@
}
#ifdef SQLITE_CHECK_PAGES
+ pList = sqlite3PcacheDirtyList(pPager->pPCache);
for(p=pList; p; p=p->pDirty){
pager_set_pagehash(p);
}
@@ -37859,10 +41378,7 @@
return rc;
}
}
- nPage = (Pgno)(n / pPager->pageSize);
- if( nPage==0 && n>0 ){
- nPage = 1;
- }
+ nPage = (Pgno)((n+pPager->pageSize-1) / pPager->pageSize);
}
/* If the current number of pages in the file is greater than the
@@ -38052,13 +41568,13 @@
*/
if( pSavepoint ){
u32 ii; /* Loop counter */
- i64 offset = pSavepoint->iSubRec*(4+pPager->pageSize);
+ i64 offset = (i64)pSavepoint->iSubRec*(4+pPager->pageSize);
if( pagerUseWal(pPager) ){
rc = sqlite3WalSavepointUndo(pPager->pWal, pSavepoint->aWalData);
}
for(ii=pSavepoint->iSubRec; rc==SQLITE_OK && ii<pPager->nSubRec; ii++){
- assert( offset==ii*(4+pPager->pageSize) );
+ assert( offset==(i64)ii*(4+pPager->pageSize) );
rc = pager_playback_one_page(pPager, &offset, pDone, 0, 1);
}
assert( rc!=SQLITE_DONE );
@@ -38080,6 +41596,13 @@
}
/*
+** Free as much memory as possible from the pager.
+*/
+SQLITE_PRIVATE void sqlite3PagerShrink(Pager *pPager){
+ sqlite3PcacheShrink(pPager->pPCache);
+}
+
+/*
** Adjust the robustness of the database to damage due to OS crashes
** or power failures by changing the number of syncs()s when writing
** the rollback journal. There are three levels:
@@ -38145,6 +41668,10 @@
pPager->syncFlags = SQLITE_SYNC_NORMAL;
pPager->ckptSyncFlags = SQLITE_SYNC_NORMAL;
}
+ pPager->walSyncFlags = pPager->syncFlags;
+ if( pPager->fullSync ){
+ pPager->walSyncFlags |= WAL_SYNC_TRANSACTIONS;
+ }
}
#endif
@@ -38282,7 +41809,7 @@
if( rc==SQLITE_OK ){
pager_reset(pPager);
- pPager->dbSize = (Pgno)(nByte/pageSize);
+ pPager->dbSize = (Pgno)((nByte+pageSize-1)/pageSize);
pPager->pageSize = pageSize;
sqlite3PageFree(pPager->pTmpSpace);
pPager->pTmpSpace = pNew;
@@ -38524,6 +42051,7 @@
SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager){
u8 *pTmp = (u8 *)pPager->pTmpSpace;
+ assert( assert_pager_state(pPager) );
disable_simulated_io_errors();
sqlite3BeginBenignMalloc();
/* pPager->errCode = 0; */
@@ -38789,7 +42317,7 @@
assert( rc!=SQLITE_OK || isOpen(pPager->fd) );
if( rc==SQLITE_OK && pPager->dbSize>pPager->dbHintSize ){
sqlite3_int64 szFile = pPager->pageSize * (sqlite3_int64)pPager->dbSize;
- sqlite3OsFileControl(pPager->fd, SQLITE_FCNTL_SIZE_HINT, &szFile);
+ sqlite3OsFileControlHint(pPager->fd, SQLITE_FCNTL_SIZE_HINT, &szFile);
pPager->dbHintSize = pPager->dbSize;
}
@@ -38898,7 +42426,7 @@
** write the journal record into the file. */
if( rc==SQLITE_OK ){
void *pData = pPg->pData;
- i64 offset = pPager->nSubRec*(4+pPager->pageSize);
+ i64 offset = (i64)pPager->nSubRec*(4+pPager->pageSize);
char *pData2;
CODEC2(pPager, pData, pPg->pgno, 7, return SQLITE_NOMEM, pData2);
@@ -38953,7 +42481,7 @@
**
** Spilling is also prohibited when in an error state since that could
** lead to database corruption. In the current implementaton it
- ** is impossible for sqlite3PCacheFetch() to be called with createFlag==1
+ ** is impossible for sqlite3PcacheFetch() to be called with createFlag==1
** while in the error state, hence it is impossible for this routine to
** be called in the error state. Nevertheless, we include a NEVER()
** test for the error state as a safeguard against future changes.
@@ -38971,7 +42499,7 @@
rc = subjournalPage(pPg);
}
if( rc==SQLITE_OK ){
- rc = pagerWalFrames(pPager, pPg, 0, 0, 0);
+ rc = pagerWalFrames(pPager, pPg, 0, 0);
}
}else{
@@ -39084,6 +42612,8 @@
int noReadlock = (flags & PAGER_NO_READLOCK)!=0; /* True to omit read-lock */
int pcacheSize = sqlite3PcacheSize(); /* Bytes to allocate for PCache */
u32 szPageDflt = SQLITE_DEFAULT_PAGE_SIZE; /* Default page size */
+ const char *zUri = 0; /* URI args to copy */
+ int nUri = 0; /* Number of bytes of URI args at *zUri */
/* Figure out how much space is required for each journal file-handle
** (there are two of them, the main journal and the sub-journal). This
@@ -39114,6 +42644,7 @@
** leave both nPathname and zPathname set to 0.
*/
if( zFilename && zFilename[0] ){
+ const char *z;
nPathname = pVfs->mxPathname+1;
zPathname = sqlite3Malloc(nPathname*2);
if( zPathname==0 ){
@@ -39122,6 +42653,13 @@
zPathname[0] = 0; /* Make sure initialized even if FullPathname() fails */
rc = sqlite3OsFullPathname(pVfs, zFilename, nPathname, zPathname);
nPathname = sqlite3Strlen30(zPathname);
+ z = zUri = &zFilename[sqlite3Strlen30(zFilename)+1];
+ while( *z ){
+ z += sqlite3Strlen30(z)+1;
+ z += sqlite3Strlen30(z)+1;
+ }
+ nUri = (int)(&z[1] - zUri);
+ assert( nUri>=0 );
if( rc==SQLITE_OK && nPathname+8>pVfs->mxPathname ){
/* This branch is taken when the journal path required by
** the database being opened will be more than pVfs->mxPathname
@@ -39154,10 +42692,10 @@
ROUND8(pcacheSize) + /* PCache object */
ROUND8(pVfs->szOsFile) + /* The main db file */
journalFileSize * 2 + /* The two journal files */
- nPathname + 1 + /* zFilename */
- nPathname + 8 + 1 /* zJournal */
+ nPathname + 1 + nUri + /* zFilename */
+ nPathname + 8 + 2 /* zJournal */
#ifndef SQLITE_OMIT_WAL
- + nPathname + 4 + 1 /* zWal */
+ + nPathname + 4 + 2 /* zWal */
#endif
);
assert( EIGHT_BYTE_ALIGNMENT(SQLITE_INT_TO_PTR(journalFileSize)) );
@@ -39176,14 +42714,17 @@
/* Fill in the Pager.zFilename and Pager.zJournal buffers, if required. */
if( zPathname ){
assert( nPathname>0 );
- pPager->zJournal = (char*)(pPtr += nPathname + 1);
+ pPager->zJournal = (char*)(pPtr += nPathname + 1 + nUri);
memcpy(pPager->zFilename, zPathname, nPathname);
+ memcpy(&pPager->zFilename[nPathname+1], zUri, nUri);
memcpy(pPager->zJournal, zPathname, nPathname);
- memcpy(&pPager->zJournal[nPathname], "-journal", 8);
+ memcpy(&pPager->zJournal[nPathname], "-journal\000", 8+1);
+ sqlite3FileSuffix3(pPager->zFilename, pPager->zJournal);
#ifndef SQLITE_OMIT_WAL
pPager->zWal = &pPager->zJournal[nPathname+8+1];
memcpy(pPager->zWal, zPathname, nPathname);
- memcpy(&pPager->zWal[nPathname], "-wal", 4);
+ memcpy(&pPager->zWal[nPathname], "-wal\000", 4+1);
+ sqlite3FileSuffix3(pPager->zFilename, pPager->zWal);
#endif
sqlite3_free(zPathname);
}
@@ -39298,9 +42839,17 @@
pPager->readOnly = (u8)readOnly;
assert( useJournal || pPager->tempFile );
pPager->noSync = pPager->tempFile;
- pPager->fullSync = pPager->noSync ?0:1;
- pPager->syncFlags = pPager->noSync ? 0 : SQLITE_SYNC_NORMAL;
- pPager->ckptSyncFlags = pPager->syncFlags;
+ if( pPager->noSync ){
+ assert( pPager->fullSync==0 );
+ assert( pPager->syncFlags==0 );
+ assert( pPager->walSyncFlags==0 );
+ assert( pPager->ckptSyncFlags==0 );
+ }else{
+ pPager->fullSync = 1;
+ pPager->syncFlags = SQLITE_SYNC_NORMAL;
+ pPager->walSyncFlags = SQLITE_SYNC_NORMAL | WAL_SYNC_TRANSACTIONS;
+ pPager->ckptSyncFlags = SQLITE_SYNC_NORMAL;
+ }
/* pPager->pFirst = 0; */
/* pPager->pFirstSynced = 0; */
/* pPager->pLast = 0; */
@@ -39777,14 +43326,13 @@
/* In this case the pcache already contains an initialized copy of
** the page. Return without further ado. */
assert( pgno<=PAGER_MAX_PGNO && pgno!=PAGER_MJ_PGNO(pPager) );
- PAGER_INCR(pPager->nHit);
+ pPager->nHit++;
return SQLITE_OK;
}else{
/* The pager cache has created a new page. Its content needs to
** be initialized. */
- PAGER_INCR(pPager->nMiss);
pPg = *ppPage;
pPg->pPager = pPager;
@@ -39820,6 +43368,7 @@
IOTRACE(("ZERO %p %d\n", pPager, pgno));
}else{
assert( pPg->pPager==pPager );
+ pPager->nMiss++;
rc = readDbPage(pPg);
if( rc!=SQLITE_OK ){
goto pager_acquire_err;
@@ -40389,7 +43938,7 @@
** direct mode, page 1 is always held in cache and hence the PagerGet()
** above is always successful - hence the ALWAYS on rc==SQLITE_OK.
*/
- if( !DIRECT_MODE && rc==SQLITE_OK ){
+ if( !DIRECT_MODE && ALWAYS(rc==SQLITE_OK) ){
rc = sqlite3PagerWrite(pPgHdr);
}
@@ -40427,12 +43976,16 @@
** function returns SQLITE_OK. Otherwise, an IO error code is returned.
*/
SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager){
- int rc; /* Return code */
- assert( !MEMDB );
- if( pPager->noSync ){
- rc = SQLITE_OK;
- }else{
+ int rc = SQLITE_OK;
+ if( !pPager->noSync ){
+ assert( !MEMDB );
rc = sqlite3OsSync(pPager->fd, pPager->syncFlags);
+ }else if( isOpen(pPager->fd) ){
+ assert( !MEMDB );
+ rc = sqlite3OsFileControl(pPager->fd, SQLITE_FCNTL_SYNC_OMITTED, 0);
+ if( rc==SQLITE_NOTFOUND ){
+ rc = SQLITE_OK;
+ }
}
return rc;
}
@@ -40519,11 +44072,19 @@
}else{
if( pagerUseWal(pPager) ){
PgHdr *pList = sqlite3PcacheDirtyList(pPager->pPCache);
- if( pList ){
- rc = pagerWalFrames(pPager, pList, pPager->dbSize, 1,
- (pPager->fullSync ? pPager->syncFlags : 0)
- );
+ PgHdr *pPageOne = 0;
+ if( pList==0 ){
+ /* Must have at least one page for the WAL commit flag.
+ ** Ticket [2d1a5c67dfc2363e44f29d9bbd57f] 2011-05-18 */
+ rc = sqlite3PagerGet(pPager, 1, &pPageOne);
+ pList = pPageOne;
+ pList->pDirty = 0;
}
+ assert( rc==SQLITE_OK );
+ if( ALWAYS(pList) ){
+ rc = pagerWalFrames(pPager, pList, pPager->dbSize, 1);
+ }
+ sqlite3PagerUnref(pPageOne);
if( rc==SQLITE_OK ){
sqlite3PcacheCleanAll(pPager->pPCache);
}
@@ -40651,8 +44212,8 @@
}
/* Finally, sync the database file. */
- if( !pPager->noSync && !noSync ){
- rc = sqlite3OsSync(pPager->fd, pPager->syncFlags);
+ if( !noSync ){
+ rc = sqlite3PagerSync(pPager);
}
IOTRACE(("DBSYNC %p\n", pPager))
}
@@ -40764,13 +44325,24 @@
rc2 = pager_end_transaction(pPager, pPager->setMaster);
if( rc==SQLITE_OK ) rc = rc2;
}else if( !isOpen(pPager->jfd) || pPager->eState==PAGER_WRITER_LOCKED ){
+ int eState = pPager->eState;
rc = pager_end_transaction(pPager, 0);
+ if( !MEMDB && eState>PAGER_WRITER_LOCKED ){
+ /* This can happen using journal_mode=off. Move the pager to the error
+ ** state to indicate that the contents of the cache may not be trusted.
+ ** Any active readers will get SQLITE_ABORT.
+ */
+ pPager->errCode = SQLITE_ABORT;
+ pPager->eState = PAGER_ERROR;
+ return rc;
+ }
}else{
rc = pager_playback(pPager, 0);
}
assert( pPager->eState==PAGER_READER || rc!=SQLITE_OK );
- assert( rc==SQLITE_OK || rc==SQLITE_FULL || (rc&0xFF)==SQLITE_IOERR );
+ assert( rc==SQLITE_OK || rc==SQLITE_FULL
+ || rc==SQLITE_NOMEM || (rc&0xFF)==SQLITE_IOERR );
/* If an error occurs during a ROLLBACK, we can no longer trust the pager
** cache. So call pager_error() on the way out to make any error persistent.
@@ -40834,6 +44406,31 @@
#endif
/*
+** Parameter eStat must be either SQLITE_DBSTATUS_CACHE_HIT or
+** SQLITE_DBSTATUS_CACHE_MISS. Before returning, *pnVal is incremented by the
+** current cache hit or miss count, according to the value of eStat. If the
+** reset parameter is non-zero, the cache hit or miss count is zeroed before
+** returning.
+*/
+SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *pPager, int eStat, int reset, int *pnVal){
+ int *piStat;
+
+ assert( eStat==SQLITE_DBSTATUS_CACHE_HIT
+ || eStat==SQLITE_DBSTATUS_CACHE_MISS
+ );
+ if( eStat==SQLITE_DBSTATUS_CACHE_HIT ){
+ piStat = &pPager->nHit;
+ }else{
+ piStat = &pPager->nMiss;
+ }
+
+ *pnVal += *piStat;
+ if( reset ){
+ *piStat = 0;
+ }
+}
+
+/*
** Return true if this is an in-memory pager.
*/
SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager *pPager){
@@ -41371,6 +44968,7 @@
SQLITE_PRIVATE i64 sqlite3PagerJournalSizeLimit(Pager *pPager, i64 iLimit){
if( iLimit>=-1 ){
pPager->journalSizeLimit = iLimit;
+ sqlite3WalLimit(pPager->pWal, iLimit);
}
return pPager->journalSizeLimit;
}
@@ -41385,16 +44983,31 @@
return &pPager->pBackup;
}
+#ifndef SQLITE_OMIT_VACUUM
+/*
+** Unless this is an in-memory or temporary database, clear the pager cache.
+*/
+SQLITE_PRIVATE void sqlite3PagerClearCache(Pager *pPager){
+ if( !MEMDB && pPager->tempFile==0 ) pager_reset(pPager);
+}
+#endif
+
#ifndef SQLITE_OMIT_WAL
/*
-** This function is called when the user invokes "PRAGMA checkpoint".
+** This function is called when the user invokes "PRAGMA wal_checkpoint",
+** "PRAGMA wal_blocking_checkpoint" or calls the sqlite3_wal_checkpoint()
+** or wal_blocking_checkpoint() API functions.
+**
+** Parameter eMode is one of SQLITE_CHECKPOINT_PASSIVE, FULL or RESTART.
*/
-SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager){
+SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager, int eMode, int *pnLog, int *pnCkpt){
int rc = SQLITE_OK;
if( pPager->pWal ){
- u8 *zBuf = (u8 *)pPager->pTmpSpace;
- rc = sqlite3WalCheckpoint(pPager->pWal, pPager->ckptSyncFlags,
- pPager->pageSize, zBuf);
+ rc = sqlite3WalCheckpoint(pPager->pWal, eMode,
+ pPager->xBusyHandler, pPager->pBusyHandlerArg,
+ pPager->ckptSyncFlags, pPager->pageSize, (u8 *)pPager->pTmpSpace,
+ pnLog, pnCkpt
+ );
}
return rc;
}
@@ -41422,8 +45035,8 @@
assert( pPager->eLock==SHARED_LOCK || pPager->eLock==EXCLUSIVE_LOCK );
rc = pagerLockDb(pPager, EXCLUSIVE_LOCK);
if( rc!=SQLITE_OK ){
- /* If the attempt to grab the pending lock failed, release the
- ** exclusive lock that may have been obtained instead. */
+ /* If the attempt to grab the exclusive lock failed, release the
+ ** pending lock that may have been obtained instead. */
pagerUnlockDb(pPager, SHARED_LOCK);
}
@@ -41456,7 +45069,8 @@
*/
if( rc==SQLITE_OK ){
rc = sqlite3WalOpen(pPager->pVfs,
- pPager->fd, pPager->zWal, pPager->exclusiveMode, &pPager->pWal
+ pPager->fd, pPager->zWal, pPager->exclusiveMode,
+ pPager->journalSizeLimit, &pPager->pWal
);
}
@@ -41988,14 +45602,20 @@
sqlite3_file *pDbFd; /* File handle for the database file */
sqlite3_file *pWalFd; /* File handle for WAL file */
u32 iCallback; /* Value to pass to log callback (or 0) */
+ i64 mxWalSize; /* Truncate WAL to this size upon reset */
int nWiData; /* Size of array apWiData */
+ int szFirstBlock; /* Size of first block written to WAL file */
volatile u32 **apWiData; /* Pointer to wal-index content in memory */
u32 szPage; /* Database page size */
i16 readLock; /* Which read lock is being held. -1 for none */
+ u8 syncFlags; /* Flags to use to sync header writes */
u8 exclusiveMode; /* Non-zero if connection is in exclusive mode */
u8 writeLock; /* True if in a write transaction */
u8 ckptLock; /* True if holding a checkpoint lock */
- u8 readOnly; /* True if the WAL file is open read-only */
+ u8 readOnly; /* WAL_RDWR, WAL_RDONLY, or WAL_SHM_RDONLY */
+ u8 truncateOnCommit; /* True to truncate WAL file on commit */
+ u8 syncHeader; /* Fsync the WAL header if true */
+ u8 padToSectorBoundary; /* Pad transactions out to the next sector */
WalIndexHdr hdr; /* Wal-index header for current transaction */
const char *zWalName; /* Name of WAL file */
u32 nCkpt; /* Checkpoint sequence counter in the wal-header */
@@ -42012,6 +45632,13 @@
#define WAL_HEAPMEMORY_MODE 2
/*
+** Possible values for WAL.readOnly
+*/
+#define WAL_RDWR 0 /* Normal read/write connection */
+#define WAL_RDONLY 1 /* The WAL file is readonly */
+#define WAL_SHM_RDONLY 2 /* The SHM file is readonly */
+
+/*
** Each page of the wal-index mapping contains a hash-table made up of
** an array of HASHTABLE_NSLOT elements of the following type.
*/
@@ -42034,14 +45661,14 @@
*/
struct WalIterator {
int iPrior; /* Last result returned from the iterator */
- int nSegment; /* Size of the aSegment[] array */
+ int nSegment; /* Number of entries in aSegment[] */
struct WalSegment {
int iNext; /* Next slot in aIndex[] not yet returned */
ht_slot *aIndex; /* i0, i1, i2... such that aPgno[iN] ascend */
u32 *aPgno; /* Array of page numbers. */
- int nEntry; /* Max size of aPgno[] and aIndex[] arrays */
+ int nEntry; /* Nr. of entries in aPgno[] and aIndex[] */
int iZero; /* Frame number associated with aPgno[0] */
- } aSegment[1]; /* One for every 32KB page in the WAL */
+ } aSegment[1]; /* One for every 32KB page in the wal-index */
};
/*
@@ -42104,6 +45731,10 @@
rc = sqlite3OsShmMap(pWal->pDbFd, iPage, WALINDEX_PGSZ,
pWal->writeLock, (void volatile **)&pWal->apWiData[iPage]
);
+ if( rc==SQLITE_READONLY ){
+ pWal->readOnly |= WAL_SHM_RDONLY;
+ rc = SQLITE_OK;
+ }
}
}
@@ -42657,6 +46288,7 @@
int szPage; /* Page size according to the log */
u32 magic; /* Magic value read from WAL header */
u32 version; /* Magic value read from WAL header */
+ int isValid; /* True if this frame is valid */
/* Read in the WAL header. */
rc = sqlite3OsRead(pWal->pWalFd, aBuf, WAL_HDRSIZE, 0);
@@ -42715,14 +46347,14 @@
for(iOffset=WAL_HDRSIZE; (iOffset+szFrame)<=nSize; iOffset+=szFrame){
u32 pgno; /* Database page number for frame */
u32 nTruncate; /* dbsize field from frame header */
- int isValid; /* True if this frame is valid */
/* Read and decode the next log frame. */
+ iFrame++;
rc = sqlite3OsRead(pWal->pWalFd, aFrame, szFrame, iOffset);
if( rc!=SQLITE_OK ) break;
isValid = walDecodeFrame(pWal, &pgno, &nTruncate, aData, aFrame);
if( !isValid ) break;
- rc = walIndexAppend(pWal, ++iFrame, pgno);
+ rc = walIndexAppend(pWal, iFrame, pgno);
if( rc!=SQLITE_OK ) break;
/* If nTruncate is non-zero, this is a commit record. */
@@ -42810,6 +46442,7 @@
sqlite3_file *pDbFd, /* The open database file */
const char *zWalName, /* Name of the WAL file */
int bNoShm, /* True to run in heap-memory mode */
+ i64 mxWalSize, /* Truncate WAL to this size on reset */
Wal **ppWal /* OUT: Allocated Wal handle */
){
int rc; /* Return Code */
@@ -42842,14 +46475,17 @@
pRet->pWalFd = (sqlite3_file *)&pRet[1];
pRet->pDbFd = pDbFd;
pRet->readLock = -1;
+ pRet->mxWalSize = mxWalSize;
pRet->zWalName = zWalName;
+ pRet->syncHeader = 1;
+ pRet->padToSectorBoundary = 1;
pRet->exclusiveMode = (bNoShm ? WAL_HEAPMEMORY_MODE: WAL_NORMAL_MODE);
/* Open file handle on the write-ahead log file. */
flags = (SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE|SQLITE_OPEN_WAL);
rc = sqlite3OsOpen(pVfs, zWalName, pRet->pWalFd, flags, &flags);
if( rc==SQLITE_OK && flags&SQLITE_OPEN_READONLY ){
- pRet->readOnly = 1;
+ pRet->readOnly = WAL_RDONLY;
}
if( rc!=SQLITE_OK ){
@@ -42857,6 +46493,11 @@
sqlite3OsClose(pRet->pWalFd);
sqlite3_free(pRet);
}else{
+ int iDC = sqlite3OsDeviceCharacteristics(pRet->pWalFd);
+ if( iDC & SQLITE_IOCAP_SEQUENTIAL ){ pRet->syncHeader = 0; }
+ if( iDC & SQLITE_IOCAP_POWERSAFE_OVERWRITE ){
+ pRet->padToSectorBoundary = 0;
+ }
*ppWal = pRet;
WALTRACE(("WAL%d: opened\n", pRet));
}
@@ -42864,6 +46505,13 @@
}
/*
+** Change the size to which the WAL file is trucated on each reset.
+*/
+SQLITE_PRIVATE void sqlite3WalLimit(Wal *pWal, i64 iLimit){
+ if( pWal ) pWal->mxWalSize = iLimit;
+}
+
+/*
** Find the smallest page number out of all pages held in the WAL that
** has not been returned by any prior invocation of this method on the
** same WalIterator object. Write into *piFrame the frame index where
@@ -42905,9 +46553,29 @@
/*
** This function merges two sorted lists into a single sorted list.
+**
+** aLeft[] and aRight[] are arrays of indices. The sort key is
+** aContent[aLeft[]] and aContent[aRight[]]. Upon entry, the following
+** is guaranteed for all J<K:
+**
+** aContent[aLeft[J]] < aContent[aLeft[K]]
+** aContent[aRight[J]] < aContent[aRight[K]]
+**
+** This routine overwrites aRight[] with a new (probably longer) sequence
+** of indices such that the aRight[] contains every index that appears in
+** either aLeft[] or the old aRight[] and such that the second condition
+** above is still met.
+**
+** The aContent[aLeft[X]] values will be unique for all X. And the
+** aContent[aRight[X]] values will be unique too. But there might be
+** one or more combinations of X and Y such that
+**
+** aLeft[X]!=aRight[Y] && aContent[aLeft[X]] == aContent[aRight[Y]]
+**
+** When that happens, omit the aLeft[X] and use the aRight[Y] index.
*/
static void walMerge(
- u32 *aContent, /* Pages in wal */
+ const u32 *aContent, /* Pages in wal - keys for the sort */
ht_slot *aLeft, /* IN: Left hand input list */
int nLeft, /* IN: Elements in array *paLeft */
ht_slot **paRight, /* IN/OUT: Right hand input list */
@@ -42947,10 +46615,24 @@
}
/*
-** Sort the elements in list aList, removing any duplicates.
+** Sort the elements in list aList using aContent[] as the sort key.
+** Remove elements with duplicate keys, preferring to keep the
+** larger aList[] values.
+**
+** The aList[] entries are indices into aContent[]. The values in
+** aList[] are to be sorted so that for all J<K:
+**
+** aContent[aList[J]] < aContent[aList[K]]
+**
+** For any X and Y such that
+**
+** aContent[aList[X]] == aContent[aList[Y]]
+**
+** Keep the larger of the two values aList[X] and aList[Y] and discard
+** the smaller.
*/
static void walMergesort(
- u32 *aContent, /* Pages in wal */
+ const u32 *aContent, /* Pages in wal */
ht_slot *aBuffer, /* Buffer of at least *pnList items to use */
ht_slot *aList, /* IN/OUT: List to sort */
int *pnList /* IN/OUT: Number of elements in aList[] */
@@ -43015,6 +46697,7 @@
/*
** Construct a WalInterator object that can be used to loop over all
** pages in the WAL in ascending order. The caller must hold the checkpoint
+** lock.
**
** On success, make *pp point to the newly allocated WalInterator object
** return SQLITE_OK. Otherwise, return an error code. If this routine
@@ -43100,6 +46783,34 @@
}
/*
+** Attempt to obtain the exclusive WAL lock defined by parameters lockIdx and
+** n. If the attempt fails and parameter xBusy is not NULL, then it is a
+** busy-handler function. Invoke it and retry the lock until either the
+** lock is successfully obtained or the busy-handler returns 0.
+*/
+static int walBusyLock(
+ Wal *pWal, /* WAL connection */
+ int (*xBusy)(void*), /* Function to call when busy */
+ void *pBusyArg, /* Context argument for xBusyHandler */
+ int lockIdx, /* Offset of first byte to lock */
+ int n /* Number of bytes to lock */
+){
+ int rc;
+ do {
+ rc = walLockExclusive(pWal, lockIdx, n);
+ }while( xBusy && rc==SQLITE_BUSY && xBusy(pBusyArg) );
+ return rc;
+}
+
+/*
+** The cache of the wal-index header must be valid to call this function.
+** Return the page-size in bytes used by the database.
+*/
+static int walPagesize(Wal *pWal){
+ return (pWal->hdr.szPage&0xfe00) + ((pWal->hdr.szPage&0x0001)<<16);
+}
+
+/*
** Copy as much content as we can from the WAL back into the database file
** in response to an sqlite3_wal_checkpoint() request or the equivalent.
**
@@ -43132,8 +46843,10 @@
*/
static int walCheckpoint(
Wal *pWal, /* Wal connection */
+ int eMode, /* One of PASSIVE, FULL or RESTART */
+ int (*xBusyCall)(void*), /* Function to call when busy */
+ void *pBusyArg, /* Context argument for xBusyHandler */
int sync_flags, /* Flags for OsSync() (or 0) */
- int nBuf, /* Size of zBuf in bytes */
u8 *zBuf /* Temporary buffer to use */
){
int rc; /* Return code */
@@ -43145,8 +46858,9 @@
u32 mxPage; /* Max database page to write */
int i; /* Loop counter */
volatile WalCkptInfo *pInfo; /* The checkpoint status information */
+ int (*xBusy)(void*) = 0; /* Function to call when waiting for locks */
- szPage = (pWal->hdr.szPage&0xfe00) + ((pWal->hdr.szPage&0x0001)<<16);
+ szPage = walPagesize(pWal);
testcase( szPage<=32768 );
testcase( szPage>=65536 );
pInfo = walCkptInfo(pWal);
@@ -43159,11 +46873,7 @@
}
assert( pIter );
- /*** TODO: Move this test out to the caller. Make it an assert() here ***/
- if( szPage!=nBuf ){
- rc = SQLITE_CORRUPT_BKPT;
- goto walcheckpoint_out;
- }
+ if( eMode!=SQLITE_CHECKPOINT_PASSIVE ) xBusy = xBusyCall;
/* Compute in mxSafeFrame the index of the last frame of the WAL that is
** safe to write into the database. Frames beyond mxSafeFrame might
@@ -43174,14 +46884,15 @@
mxPage = pWal->hdr.nPage;
for(i=1; i<WAL_NREADER; i++){
u32 y = pInfo->aReadMark[i];
- if( mxSafeFrame>=y ){
+ if( mxSafeFrame>y ){
assert( y<=pWal->hdr.mxFrame );
- rc = walLockExclusive(pWal, WAL_READ_LOCK(i), 1);
+ rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(i), 1);
if( rc==SQLITE_OK ){
pInfo->aReadMark[i] = READMARK_NOT_USED;
walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
}else if( rc==SQLITE_BUSY ){
mxSafeFrame = y;
+ xBusy = 0;
}else{
goto walcheckpoint_out;
}
@@ -43189,7 +46900,7 @@
}
if( pInfo->nBackfill<mxSafeFrame
- && (rc = walLockExclusive(pWal, WAL_READ_LOCK(0), 1))==SQLITE_OK
+ && (rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(0), 1))==SQLITE_OK
){
i64 nSize; /* Current size of database file */
u32 nBackfill = pInfo->nBackfill;
@@ -43206,7 +46917,7 @@
i64 nReq = ((i64)mxPage * szPage);
rc = sqlite3OsFileSize(pWal->pDbFd, &nSize);
if( rc==SQLITE_OK && nSize<nReq ){
- sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_SIZE_HINT, &nReq);
+ sqlite3OsFileControlHint(pWal->pDbFd, SQLITE_FCNTL_SIZE_HINT, &nReq);
}
}
@@ -43242,19 +46953,56 @@
/* Release the reader lock held while backfilling */
walUnlockExclusive(pWal, WAL_READ_LOCK(0), 1);
- }else if( rc==SQLITE_BUSY ){
+ }
+
+ if( rc==SQLITE_BUSY ){
/* Reset the return code so as not to report a checkpoint failure
- ** just because active readers prevent any backfill.
- */
+ ** just because there are active readers. */
rc = SQLITE_OK;
}
+ /* If this is an SQLITE_CHECKPOINT_RESTART operation, and the entire wal
+ ** file has been copied into the database file, then block until all
+ ** readers have finished using the wal file. This ensures that the next
+ ** process to write to the database restarts the wal file.
+ */
+ if( rc==SQLITE_OK && eMode!=SQLITE_CHECKPOINT_PASSIVE ){
+ assert( pWal->writeLock );
+ if( pInfo->nBackfill<pWal->hdr.mxFrame ){
+ rc = SQLITE_BUSY;
+ }else if( eMode==SQLITE_CHECKPOINT_RESTART ){
+ assert( mxSafeFrame==pWal->hdr.mxFrame );
+ rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(1), WAL_NREADER-1);
+ if( rc==SQLITE_OK ){
+ walUnlockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1);
+ }
+ }
+ }
+
walcheckpoint_out:
walIteratorFree(pIter);
return rc;
}
/*
+** If the WAL file is currently larger than nMax bytes in size, truncate
+** it to exactly nMax bytes. If an error occurs while doing so, ignore it.
+*/
+static void walLimitSize(Wal *pWal, i64 nMax){
+ i64 sz;
+ int rx;
+ sqlite3BeginBenignMalloc();
+ rx = sqlite3OsFileSize(pWal->pWalFd, &sz);
+ if( rx==SQLITE_OK && (sz > nMax ) ){
+ rx = sqlite3OsTruncate(pWal->pWalFd, nMax);
+ }
+ sqlite3EndBenignMalloc();
+ if( rx ){
+ sqlite3_log(rx, "cannot limit WAL size: %s", pWal->zWalName);
+ }
+}
+
+/*
** Close a connection to a log file.
*/
SQLITE_PRIVATE int sqlite3WalClose(
@@ -43280,16 +47028,37 @@
if( pWal->exclusiveMode==WAL_NORMAL_MODE ){
pWal->exclusiveMode = WAL_EXCLUSIVE_MODE;
}
- rc = sqlite3WalCheckpoint(pWal, sync_flags, nBuf, zBuf);
+ rc = sqlite3WalCheckpoint(
+ pWal, SQLITE_CHECKPOINT_PASSIVE, 0, 0, sync_flags, nBuf, zBuf, 0, 0
+ );
if( rc==SQLITE_OK ){
- isDelete = 1;
+ int bPersist = -1;
+ sqlite3OsFileControlHint(
+ pWal->pDbFd, SQLITE_FCNTL_PERSIST_WAL, &bPersist
+ );
+ if( bPersist!=1 ){
+ /* Try to delete the WAL file if the checkpoint completed and
+ ** fsyned (rc==SQLITE_OK) and if we are not in persistent-wal
+ ** mode (!bPersist) */
+ isDelete = 1;
+ }else if( pWal->mxWalSize>=0 ){
+ /* Try to truncate the WAL file to zero bytes if the checkpoint
+ ** completed and fsynced (rc==SQLITE_OK) and we are in persistent
+ ** WAL mode (bPersist) and if the PRAGMA journal_size_limit is a
+ ** non-negative value (pWal->mxWalSize>=0). Note that we truncate
+ ** to zero bytes as truncating to the journal_size_limit might
+ ** leave a corrupt WAL file on disk. */
+ walLimitSize(pWal, 0);
+ }
}
}
walIndexClose(pWal, isDelete);
sqlite3OsClose(pWal->pWalFd);
if( isDelete ){
+ sqlite3BeginBenignMalloc();
sqlite3OsDelete(pWal->pVfs, pWal->zWalName, 0);
+ sqlite3EndBenignMalloc();
}
WALTRACE(("WAL%p: closed\n", pWal));
sqlite3_free((void *)pWal->apWiData);
@@ -43399,21 +47168,28 @@
** with a writer. So get a WRITE lock and try again.
*/
assert( badHdr==0 || pWal->writeLock==0 );
- if( badHdr && SQLITE_OK==(rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1)) ){
- pWal->writeLock = 1;
- if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){
- badHdr = walIndexTryHdr(pWal, pChanged);
- if( badHdr ){
- /* If the wal-index header is still malformed even while holding
- ** a WRITE lock, it can only mean that the header is corrupted and
- ** needs to be reconstructed. So run recovery to do exactly that.
- */
- rc = walIndexRecover(pWal);
- *pChanged = 1;
+ if( badHdr ){
+ if( pWal->readOnly & WAL_SHM_RDONLY ){
+ if( SQLITE_OK==(rc = walLockShared(pWal, WAL_WRITE_LOCK)) ){
+ walUnlockShared(pWal, WAL_WRITE_LOCK);
+ rc = SQLITE_READONLY_RECOVERY;
}
+ }else if( SQLITE_OK==(rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1)) ){
+ pWal->writeLock = 1;
+ if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){
+ badHdr = walIndexTryHdr(pWal, pChanged);
+ if( badHdr ){
+ /* If the wal-index header is still malformed even while holding
+ ** a WRITE lock, it can only mean that the header is corrupted and
+ ** needs to be reconstructed. So run recovery to do exactly that.
+ */
+ rc = walIndexRecover(pWal);
+ *pChanged = 1;
+ }
+ }
+ pWal->writeLock = 0;
+ walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
}
- pWal->writeLock = 0;
- walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
}
/* If the header is read successfully, check the version number to make
@@ -43600,7 +47376,9 @@
}
/* There was once an "if" here. The extra "{" is to preserve indentation. */
{
- if( mxReadMark < pWal->hdr.mxFrame || mxI==0 ){
+ if( (pWal->readOnly & WAL_SHM_RDONLY)==0
+ && (mxReadMark<pWal->hdr.mxFrame || mxI==0)
+ ){
for(i=1; i<WAL_NREADER; i++){
rc = walLockExclusive(pWal, WAL_READ_LOCK(i), 1);
if( rc==SQLITE_OK ){
@@ -43614,8 +47392,8 @@
}
}
if( mxI==0 ){
- assert( rc==SQLITE_BUSY );
- return WAL_RETRY;
+ assert( rc==SQLITE_BUSY || (pWal->readOnly & WAL_SHM_RDONLY)!=0 );
+ return rc==SQLITE_BUSY ? WAL_RETRY : SQLITE_READONLY_CANTLOCK;
}
rc = walLockShared(pWal, WAL_READ_LOCK(mxI));
@@ -43770,7 +47548,7 @@
for(iKey=walHash(pgno); aHash[iKey]; iKey=walNextHash(iKey)){
u32 iFrame = aHash[iKey] + iZero;
if( iFrame<=iLast && aPgno[aHash[iKey]]==pgno ){
- assert( iFrame>iRead );
+ /* assert( iFrame>iRead ); -- not true if there is corruption */
iRead = iFrame;
}
if( (nCollide--)==0 ){
@@ -43803,7 +47581,7 @@
int sz;
i64 iOffset;
sz = pWal->hdr.szPage;
- sz = (pWal->hdr.szPage&0xfe00) + ((pWal->hdr.szPage&0x0001)<<16);
+ sz = (sz&0xfe00) + ((sz&0x0001)<<16);
testcase( sz<=32768 );
testcase( sz>=65536 );
iOffset = walFrameOffset(iRead, sz) + WAL_FRAME_HDRSIZE;
@@ -43882,6 +47660,7 @@
if( pWal->writeLock ){
walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
pWal->writeLock = 0;
+ pWal->truncateOnCommit = 0;
}
return SQLITE_OK;
}
@@ -43978,6 +47757,7 @@
return rc;
}
+
/*
** This function is called just before writing a set of frames to the log
** file (see sqlite3WalFrames()). It checks to see if, instead of appending
@@ -44014,6 +47794,7 @@
*/
int i; /* Loop counter */
u32 *aSalt = pWal->hdr.aSalt; /* Big-endian salt values */
+
pWal->nCkpt++;
pWal->hdr.mxFrame = 0;
sqlite3Put4byte((u8*)&aSalt[0], 1 + sqlite3Get4byte((u8*)&aSalt[0]));
@@ -44042,6 +47823,74 @@
return rc;
}
+/*
+** Information about the current state of the WAL file and where
+** the next fsync should occur - passed from sqlite3WalFrames() into
+** walWriteToLog().
+*/
+typedef struct WalWriter {
+ Wal *pWal; /* The complete WAL information */
+ sqlite3_file *pFd; /* The WAL file to which we write */
+ sqlite3_int64 iSyncPoint; /* Fsync at this offset */
+ int syncFlags; /* Flags for the fsync */
+ int szPage; /* Size of one page */
+} WalWriter;
+
+/*
+** Write iAmt bytes of content into the WAL file beginning at iOffset.
+** Do a sync when crossing the p->iSyncPoint boundary.
+**
+** In other words, if iSyncPoint is in between iOffset and iOffset+iAmt,
+** first write the part before iSyncPoint, then sync, then write the
+** rest.
+*/
+static int walWriteToLog(
+ WalWriter *p, /* WAL to write to */
+ void *pContent, /* Content to be written */
+ int iAmt, /* Number of bytes to write */
+ sqlite3_int64 iOffset /* Start writing at this offset */
+){
+ int rc;
+ if( iOffset<p->iSyncPoint && iOffset+iAmt>=p->iSyncPoint ){
+ int iFirstAmt = (int)(p->iSyncPoint - iOffset);
+ rc = sqlite3OsWrite(p->pFd, pContent, iFirstAmt, iOffset);
+ if( rc ) return rc;
+ iOffset += iFirstAmt;
+ iAmt -= iFirstAmt;
+ pContent = (void*)(iFirstAmt + (char*)pContent);
+ assert( p->syncFlags & (SQLITE_SYNC_NORMAL|SQLITE_SYNC_FULL) );
+ rc = sqlite3OsSync(p->pFd, p->syncFlags);
+ if( iAmt==0 || rc ) return rc;
+ }
+ rc = sqlite3OsWrite(p->pFd, pContent, iAmt, iOffset);
+ return rc;
+}
+
+/*
+** Write out a single frame of the WAL
+*/
+static int walWriteOneFrame(
+ WalWriter *p, /* Where to write the frame */
+ PgHdr *pPage, /* The page of the frame to be written */
+ int nTruncate, /* The commit flag. Usually 0. >0 for commit */
+ sqlite3_int64 iOffset /* Byte offset at which to write */
+){
+ int rc; /* Result code from subfunctions */
+ void *pData; /* Data actually written */
+ u8 aFrame[WAL_FRAME_HDRSIZE]; /* Buffer to assemble frame-header in */
+#if defined(SQLITE_HAS_CODEC)
+ if( (pData = sqlite3PagerCodec(pPage))==0 ) return SQLITE_NOMEM;
+#else
+ pData = pPage->pData;
+#endif
+ walEncodeFrame(p->pWal, pPage->pgno, nTruncate, pData, aFrame);
+ rc = walWriteToLog(p, aFrame, sizeof(aFrame), iOffset);
+ if( rc ) return rc;
+ /* Write the page data */
+ rc = walWriteToLog(p, pData, p->szPage, iOffset+sizeof(aFrame));
+ return rc;
+}
+
/*
** Write a set of frames to the log. The caller must hold the write-lock
** on the log file (obtained using sqlite3WalBeginWriteTransaction()).
@@ -44056,14 +47905,20 @@
){
int rc; /* Used to catch return codes */
u32 iFrame; /* Next frame address */
- u8 aFrame[WAL_FRAME_HDRSIZE]; /* Buffer to assemble frame-header in */
PgHdr *p; /* Iterator to run through pList with. */
PgHdr *pLast = 0; /* Last frame in list */
- int nLast = 0; /* Number of extra copies of last page */
+ int nExtra = 0; /* Number of extra copies of last page */
+ int szFrame; /* The size of a single frame */
+ i64 iOffset; /* Next byte to write in WAL file */
+ WalWriter w; /* The writer */
assert( pList );
assert( pWal->writeLock );
+ /* If this frame set completes a transaction, then nTruncate>0. If
+ ** nTruncate==0 then this frame set does not complete the transaction. */
+ assert( (isCommit!=0)==(nTruncate!=0) );
+
#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG)
{ int cnt; for(cnt=0, p=pList; p; p=p->pDirty, cnt++){}
WALTRACE(("WAL%p: frame write begin. %d frames. mxFrame=%d. %s\n",
@@ -44091,7 +47946,7 @@
sqlite3Put4byte(&aWalHdr[4], WAL_MAX_VERSION);
sqlite3Put4byte(&aWalHdr[8], szPage);
sqlite3Put4byte(&aWalHdr[12], pWal->nCkpt);
- sqlite3_randomness(8, pWal->hdr.aSalt);
+ if( pWal->nCkpt==0 ) sqlite3_randomness(8, pWal->hdr.aSalt);
memcpy(&aWalHdr[16], pWal->hdr.aSalt, 8);
walChecksumBytes(1, aWalHdr, WAL_HDRSIZE-2*4, 0, aCksum);
sqlite3Put4byte(&aWalHdr[24], aCksum[0]);
@@ -44101,77 +47956,89 @@
pWal->hdr.bigEndCksum = SQLITE_BIGENDIAN;
pWal->hdr.aFrameCksum[0] = aCksum[0];
pWal->hdr.aFrameCksum[1] = aCksum[1];
+ pWal->truncateOnCommit = 1;
rc = sqlite3OsWrite(pWal->pWalFd, aWalHdr, sizeof(aWalHdr), 0);
WALTRACE(("WAL%p: wal-header write %s\n", pWal, rc ? "failed" : "ok"));
if( rc!=SQLITE_OK ){
return rc;
}
+
+ /* Sync the header (unless SQLITE_IOCAP_SEQUENTIAL is true or unless
+ ** all syncing is turned off by PRAGMA synchronous=OFF). Otherwise
+ ** an out-of-order write following a WAL restart could result in
+ ** database corruption. See the ticket:
+ **
+ ** http://localhost:591/sqlite/info/ff5be73dee
+ */
+ if( pWal->syncHeader && sync_flags ){
+ rc = sqlite3OsSync(pWal->pWalFd, sync_flags & SQLITE_SYNC_MASK);
+ if( rc ) return rc;
+ }
}
assert( (int)pWal->szPage==szPage );
- /* Write the log file. */
- for(p=pList; p; p=p->pDirty){
- u32 nDbsize; /* Db-size field for frame header */
- i64 iOffset; /* Write offset in log file */
- void *pData;
-
- iOffset = walFrameOffset(++iFrame, szPage);
- /* testcase( IS_BIG_INT(iOffset) ); // requires a 4GiB WAL */
-
- /* Populate and write the frame header */
- nDbsize = (isCommit && p->pDirty==0) ? nTruncate : 0;
-#if defined(SQLITE_HAS_CODEC)
- if( (pData = sqlite3PagerCodec(p))==0 ) return SQLITE_NOMEM;
-#else
- pData = p->pData;
-#endif
- walEncodeFrame(pWal, p->pgno, nDbsize, pData, aFrame);
- rc = sqlite3OsWrite(pWal->pWalFd, aFrame, sizeof(aFrame), iOffset);
- if( rc!=SQLITE_OK ){
- return rc;
- }
+ /* Setup information needed to write frames into the WAL */
+ w.pWal = pWal;
+ w.pFd = pWal->pWalFd;
+ w.iSyncPoint = 0;
+ w.syncFlags = sync_flags;
+ w.szPage = szPage;
+ iOffset = walFrameOffset(iFrame+1, szPage);
+ szFrame = szPage + WAL_FRAME_HDRSIZE;
- /* Write the page data */
- rc = sqlite3OsWrite(pWal->pWalFd, pData, szPage, iOffset+sizeof(aFrame));
- if( rc!=SQLITE_OK ){
- return rc;
- }
+ /* Write all frames into the log file exactly once */
+ for(p=pList; p; p=p->pDirty){
+ int nDbSize; /* 0 normally. Positive == commit flag */
+ iFrame++;
+ assert( iOffset==walFrameOffset(iFrame, szPage) );
+ nDbSize = (isCommit && p->pDirty==0) ? nTruncate : 0;
+ rc = walWriteOneFrame(&w, p, nDbSize, iOffset);
+ if( rc ) return rc;
pLast = p;
+ iOffset += szFrame;
}
- /* Sync the log file if the 'isSync' flag was specified. */
- if( sync_flags ){
- i64 iSegment = sqlite3OsSectorSize(pWal->pWalFd);
- i64 iOffset = walFrameOffset(iFrame+1, szPage);
-
- assert( isCommit );
- assert( iSegment>0 );
-
- iSegment = (((iOffset+iSegment-1)/iSegment) * iSegment);
- while( iOffset<iSegment ){
- void *pData;
-#if defined(SQLITE_HAS_CODEC)
- if( (pData = sqlite3PagerCodec(pLast))==0 ) return SQLITE_NOMEM;
-#else
- pData = pLast->pData;
-#endif
- walEncodeFrame(pWal, pLast->pgno, nTruncate, pData, aFrame);
- /* testcase( IS_BIG_INT(iOffset) ); // requires a 4GiB WAL */
- rc = sqlite3OsWrite(pWal->pWalFd, aFrame, sizeof(aFrame), iOffset);
- if( rc!=SQLITE_OK ){
- return rc;
+ /* If this is the end of a transaction, then we might need to pad
+ ** the transaction and/or sync the WAL file.
+ **
+ ** Padding and syncing only occur if this set of frames complete a
+ ** transaction and if PRAGMA synchronous=FULL. If synchronous==NORMAL
+ ** or synchonous==OFF, then no padding or syncing are needed.
+ **
+ ** If SQLITE_IOCAP_POWERSAFE_OVERWRITE is defined, then padding is not
+ ** needed and only the sync is done. If padding is needed, then the
+ ** final frame is repeated (with its commit mark) until the next sector
+ ** boundary is crossed. Only the part of the WAL prior to the last
+ ** sector boundary is synced; the part of the last frame that extends
+ ** past the sector boundary is written after the sync.
+ */
+ if( isCommit && (sync_flags & WAL_SYNC_TRANSACTIONS)!=0 ){
+ if( pWal->padToSectorBoundary ){
+ int sectorSize = sqlite3OsSectorSize(pWal->pWalFd);
+ w.iSyncPoint = ((iOffset+sectorSize-1)/sectorSize)*sectorSize;
+ while( iOffset<w.iSyncPoint ){
+ rc = walWriteOneFrame(&w, pLast, nTruncate, iOffset);
+ if( rc ) return rc;
+ iOffset += szFrame;
+ nExtra++;
}
- iOffset += WAL_FRAME_HDRSIZE;
- rc = sqlite3OsWrite(pWal->pWalFd, pData, szPage, iOffset);
- if( rc!=SQLITE_OK ){
- return rc;
- }
- nLast++;
- iOffset += szPage;
+ }else{
+ rc = sqlite3OsSync(w.pFd, sync_flags & SQLITE_SYNC_MASK);
}
+ }
- rc = sqlite3OsSync(pWal->pWalFd, sync_flags);
+ /* If this frame set completes the first transaction in the WAL and
+ ** if PRAGMA journal_size_limit is set, then truncate the WAL to the
+ ** journal size limit, if possible.
+ */
+ if( isCommit && pWal->truncateOnCommit && pWal->mxWalSize>=0 ){
+ i64 sz = pWal->mxWalSize;
+ if( walFrameOffset(iFrame+nExtra+1, szPage)>pWal->mxWalSize ){
+ sz = walFrameOffset(iFrame+nExtra+1, szPage);
+ }
+ walLimitSize(pWal, sz);
+ pWal->truncateOnCommit = 0;
}
/* Append data to the wal-index. It is not necessary to lock the
@@ -44184,9 +48051,9 @@
iFrame++;
rc = walIndexAppend(pWal, iFrame, p->pgno);
}
- while( nLast>0 && rc==SQLITE_OK ){
+ while( rc==SQLITE_OK && nExtra>0 ){
iFrame++;
- nLast--;
+ nExtra--;
rc = walIndexAppend(pWal, iFrame, pLast->pgno);
}
@@ -44217,18 +48084,29 @@
**
** Obtain a CHECKPOINT lock and then backfill as much information as
** we can from WAL into the database.
+**
+** If parameter xBusy is not NULL, it is a pointer to a busy-handler
+** callback. In this case this function runs a blocking checkpoint.
*/
SQLITE_PRIVATE int sqlite3WalCheckpoint(
Wal *pWal, /* Wal connection */
+ int eMode, /* PASSIVE, FULL or RESTART */
+ int (*xBusy)(void*), /* Function to call when busy */
+ void *pBusyArg, /* Context argument for xBusyHandler */
int sync_flags, /* Flags to sync db file with (or 0) */
int nBuf, /* Size of temporary buffer */
- u8 *zBuf /* Temporary buffer to use */
+ u8 *zBuf, /* Temporary buffer to use */
+ int *pnLog, /* OUT: Number of frames in WAL */
+ int *pnCkpt /* OUT: Number of backfilled frames in WAL */
){
int rc; /* Return code */
int isChanged = 0; /* True if a new wal-index header is loaded */
+ int eMode2 = eMode; /* Mode to pass to walCheckpoint() */
assert( pWal->ckptLock==0 );
+ assert( pWal->writeLock==0 );
+ if( pWal->readOnly ) return SQLITE_READONLY;
WALTRACE(("WAL%p: checkpoint begins\n", pWal));
rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1);
if( rc ){
@@ -44239,11 +48117,45 @@
}
pWal->ckptLock = 1;
- /* Copy data from the log to the database file. */
- rc = walIndexReadHdr(pWal, &isChanged);
- if( rc==SQLITE_OK ){
- rc = walCheckpoint(pWal, sync_flags, nBuf, zBuf);
+ /* If this is a blocking-checkpoint, then obtain the write-lock as well
+ ** to prevent any writers from running while the checkpoint is underway.
+ ** This has to be done before the call to walIndexReadHdr() below.
+ **
+ ** If the writer lock cannot be obtained, then a passive checkpoint is
+ ** run instead. Since the checkpointer is not holding the writer lock,
+ ** there is no point in blocking waiting for any readers. Assuming no
+ ** other error occurs, this function will return SQLITE_BUSY to the caller.
+ */
+ if( eMode!=SQLITE_CHECKPOINT_PASSIVE ){
+ rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_WRITE_LOCK, 1);
+ if( rc==SQLITE_OK ){
+ pWal->writeLock = 1;
+ }else if( rc==SQLITE_BUSY ){
+ eMode2 = SQLITE_CHECKPOINT_PASSIVE;
+ rc = SQLITE_OK;
+ }
}
+
+ /* Read the wal-index header. */
+ if( rc==SQLITE_OK ){
+ rc = walIndexReadHdr(pWal, &isChanged);
+ }
+
+ /* Copy data from the log to the database file. */
+ if( rc==SQLITE_OK ){
+ if( pWal->hdr.mxFrame && walPagesize(pWal)!=nBuf ){
+ rc = SQLITE_CORRUPT_BKPT;
+ }else{
+ rc = walCheckpoint(pWal, eMode2, xBusy, pBusyArg, sync_flags, zBuf);
+ }
+
+ /* If no error occurred, set the output variables. */
+ if( rc==SQLITE_OK || rc==SQLITE_BUSY ){
+ if( pnLog ) *pnLog = (int)pWal->hdr.mxFrame;
+ if( pnCkpt ) *pnCkpt = (int)(walCkptInfo(pWal)->nBackfill);
+ }
+ }
+
if( isChanged ){
/* If a new wal-index header was loaded before the checkpoint was
** performed, then the pager-cache associated with pWal is now
@@ -44255,10 +48167,11 @@
}
/* Release the locks. */
+ sqlite3WalEndWriteTransaction(pWal);
walUnlockExclusive(pWal, WAL_CKPT_LOCK, 1);
pWal->ckptLock = 0;
WALTRACE(("WAL%p: checkpoint %s\n", pWal, rc ? "failed" : "ok"));
- return rc;
+ return (rc==SQLITE_OK && eMode!=eMode2 ? SQLITE_BUSY : rc);
}
/* Return the value to pass to a sqlite3_wal_hook callback, the
@@ -44587,7 +48500,7 @@
/* The following value is the maximum cell size assuming a maximum page
** size give above.
*/
-#define MX_CELL_SIZE(pBt) (pBt->pageSize-8)
+#define MX_CELL_SIZE(pBt) ((int)(pBt->pageSize-8))
/* The maximum number of cells on a single page of the database. This
** assumes a minimum cell size of 6 bytes (4 bytes for the cell itself
@@ -44646,6 +48559,7 @@
u8 hasData; /* True if this page stores data */
u8 hdrOffset; /* 100 for page 1. 0 otherwise */
u8 childPtrSize; /* 0 if leaf==1. 4 if leaf==0 */
+ u8 max1bytePayload; /* min(maxLocal,127) */
u16 maxLocal; /* Copy of BtShared.maxLocal or BtShared.maxLeaf */
u16 minLocal; /* Copy of BtShared.minLocal or BtShared.minLeaf */
u16 cellOffset; /* Index in aData of first cell pointer */
@@ -44658,6 +48572,8 @@
} aOvfl[5];
BtShared *pBt; /* Pointer to BtShared that this page is part of */
u8 *aData; /* Pointer to disk image of the page data */
+ u8 *aDataEnd; /* One byte past the end of usable data */
+ u8 *aCellIdx; /* The cell index area */
DbPage *pDbPage; /* Pager page handle */
Pgno pgno; /* Page number for this page */
};
@@ -44705,7 +48621,7 @@
** All fields in this structure are accessed under sqlite3.mutex.
** The pBt pointer itself may not be changed while there exists cursors
** in the referenced BtShared that point back to this Btree since those
-** cursors have to do go through this Btree to find their BtShared and
+** cursors have to go through this Btree to find their BtShared and
** they often do so without holding sqlite3.mutex.
*/
struct Btree {
@@ -44737,7 +48653,7 @@
/*
** An instance of this object represents a single database file.
**
-** A single database file can be in use as the same time by two
+** A single database file can be in use at the same time by two
** or more database connections. When two or more connections are
** sharing the same database file, each connection has it own
** private Btree object for the file and each of those Btrees points
@@ -44774,49 +48690,55 @@
sqlite3 *db; /* Database connection currently using this Btree */
BtCursor *pCursor; /* A list of all open cursors */
MemPage *pPage1; /* First page of the database */
- u8 readOnly; /* True if the underlying file is readonly */
- u8 pageSizeFixed; /* True if the page size can no longer be changed */
- u8 secureDelete; /* True if secure_delete is enabled */
- u8 initiallyEmpty; /* Database is empty at start of transaction */
u8 openFlags; /* Flags to sqlite3BtreeOpen() */
#ifndef SQLITE_OMIT_AUTOVACUUM
u8 autoVacuum; /* True if auto-vacuum is enabled */
u8 incrVacuum; /* True if incr-vacuum is enabled */
#endif
+ u8 inTransaction; /* Transaction state */
+ u8 max1bytePayload; /* Maximum first byte of cell for a 1-byte payload */
+ u16 btsFlags; /* Boolean parameters. See BTS_* macros below */
u16 maxLocal; /* Maximum local payload in non-LEAFDATA tables */
u16 minLocal; /* Minimum local payload in non-LEAFDATA tables */
u16 maxLeaf; /* Maximum local payload in a LEAFDATA table */
u16 minLeaf; /* Minimum local payload in a LEAFDATA table */
- u8 inTransaction; /* Transaction state */
- u8 doNotUseWAL; /* If true, do not open write-ahead-log file */
u32 pageSize; /* Total number of bytes on a page */
u32 usableSize; /* Number of usable bytes on each page */
int nTransaction; /* Number of open transactions (read + write) */
u32 nPage; /* Number of pages in the database */
void *pSchema; /* Pointer to space allocated by sqlite3BtreeSchema() */
void (*xFreeSchema)(void*); /* Destructor for BtShared.pSchema */
- sqlite3_mutex *mutex; /* Non-recursive mutex required to access this struct */
+ sqlite3_mutex *mutex; /* Non-recursive mutex required to access this object */
Bitvec *pHasContent; /* Set of pages moved to free-list this transaction */
#ifndef SQLITE_OMIT_SHARED_CACHE
int nRef; /* Number of references to this structure */
BtShared *pNext; /* Next on a list of sharable BtShared structs */
BtLock *pLock; /* List of locks held on this shared-btree struct */
Btree *pWriter; /* Btree with currently open write transaction */
- u8 isExclusive; /* True if pWriter has an EXCLUSIVE lock on the db */
- u8 isPending; /* If waiting for read-locks to clear */
#endif
u8 *pTmpSpace; /* BtShared.pageSize bytes of space for tmp use */
};
/*
+** Allowed values for BtShared.btsFlags
+*/
+#define BTS_READ_ONLY 0x0001 /* Underlying file is readonly */
+#define BTS_PAGESIZE_FIXED 0x0002 /* Page size can no longer be changed */
+#define BTS_SECURE_DELETE 0x0004 /* PRAGMA secure_delete is enabled */
+#define BTS_INITIALLY_EMPTY 0x0008 /* Database was empty at trans start */
+#define BTS_NO_WAL 0x0010 /* Do not open write-ahead-log files */
+#define BTS_EXCLUSIVE 0x0020 /* pWriter has an exclusive lock */
+#define BTS_PENDING 0x0040 /* Waiting for read-locks to clear */
+
+/*
** An instance of the following structure is used to hold information
** about a cell. The parseCellPtr() function fills in this structure
** based on information extract from the raw disk page.
*/
typedef struct CellInfo CellInfo;
struct CellInfo {
- u8 *pCell; /* Pointer to the start of cell content */
i64 nKey; /* The key for INTKEY tables, or number of bytes in key */
+ u8 *pCell; /* Pointer to the start of cell content */
u32 nData; /* Number of bytes of data */
u32 nPayload; /* Total amount of payload */
u16 nHeader; /* Size of the cell content header in bytes */
@@ -44843,7 +48765,7 @@
** The entry is identified by its MemPage and the index in
** MemPage.aCell[] of the entry.
**
-** A single database file can shared by two more database connections,
+** A single database file can be shared by two more database connections,
** but cursors cannot be shared. Each cursor is associated with a
** particular database connection identified BtCursor.pBtree.db.
**
@@ -44858,20 +48780,20 @@
Pgno pgnoRoot; /* The root page of this tree */
sqlite3_int64 cachedRowid; /* Next rowid cache. 0 means not valid */
CellInfo info; /* A parse of the cell we are pointing at */
+ i64 nKey; /* Size of pKey, or last integer key */
+ void *pKey; /* Saved key that was cursor's last known position */
+ int skipNext; /* Prev() is noop if negative. Next() is noop if positive */
u8 wrFlag; /* True if writable */
u8 atLast; /* Cursor pointing to the last entry */
u8 validNKey; /* True if info.nKey is valid */
u8 eState; /* One of the CURSOR_XXX constants (see below) */
- void *pKey; /* Saved key that was cursor's last known position */
- i64 nKey; /* Size of pKey, or last integer key */
- int skipNext; /* Prev() is noop if negative. Next() is noop if positive */
#ifndef SQLITE_OMIT_INCRBLOB
- u8 isIncrblobHandle; /* True if this cursor is an incr. io handle */
Pgno *aOverflow; /* Cache of overflow page locations */
+ u8 isIncrblobHandle; /* True if this cursor is an incr. io handle */
#endif
i16 iPage; /* Index of current page in apPage */
- MemPage *apPage[BTCURSOR_MAX_DEPTH]; /* Pages from root to current page */
u16 aiIdx[BTCURSOR_MAX_DEPTH]; /* Current index in apPage[i] */
+ MemPage *apPage[BTCURSOR_MAX_DEPTH]; /* Pages from root to current page */
};
/*
@@ -45004,7 +48926,7 @@
};
/*
-** Read or write a two- and four-byte big-endian integer values.
+** Routines to read or write a two- and four-byte big-endian integer values.
*/
#define get2byte(x) ((x)[0]<<8 | (x)[1])
#define put2byte(p,v) ((p)[0] = (u8)((v)>>8), (p)[1] = (u8)(v))
@@ -45036,12 +48958,13 @@
** clear the p->locked boolean.
*/
static void unlockBtreeMutex(Btree *p){
+ BtShared *pBt = p->pBt;
assert( p->locked==1 );
- assert( sqlite3_mutex_held(p->pBt->mutex) );
+ assert( sqlite3_mutex_held(pBt->mutex) );
assert( sqlite3_mutex_held(p->db->mutex) );
- assert( p->db==p->pBt->db );
+ assert( p->db==pBt->db );
- sqlite3_mutex_leave(p->pBt->mutex);
+ sqlite3_mutex_leave(pBt->mutex);
p->locked = 0;
}
@@ -45182,30 +49105,11 @@
*/
SQLITE_PRIVATE void sqlite3BtreeEnterAll(sqlite3 *db){
int i;
- Btree *p, *pLater;
+ Btree *p;
assert( sqlite3_mutex_held(db->mutex) );
for(i=0; i<db->nDb; i++){
p = db->aDb[i].pBt;
- assert( !p || (p->locked==0 && p->sharable) || p->pBt->db==p->db );
- if( p && p->sharable ){
- p->wantToLock++;
- if( !p->locked ){
- assert( p->wantToLock==1 );
- while( p->pPrev ) p = p->pPrev;
- /* Reason for ALWAYS: There must be at least on unlocked Btree in
- ** the chain. Otherwise the !p->locked test above would have failed */
- while( p->locked && ALWAYS(p->pNext) ) p = p->pNext;
- for(pLater = p->pNext; pLater; pLater=pLater->pNext){
- if( pLater->locked ){
- unlockBtreeMutex(pLater);
- }
- }
- while( p ){
- lockBtreeMutex(p);
- p = p->pNext;
- }
- }
- }
+ if( p ) sqlite3BtreeEnter(p);
}
}
SQLITE_PRIVATE void sqlite3BtreeLeaveAll(sqlite3 *db){
@@ -45214,16 +49118,18 @@
assert( sqlite3_mutex_held(db->mutex) );
for(i=0; i<db->nDb; i++){
p = db->aDb[i].pBt;
- if( p && p->sharable ){
- assert( p->wantToLock>0 );
- p->wantToLock--;
- if( p->wantToLock==0 ){
- unlockBtreeMutex(p);
- }
- }
+ if( p ) sqlite3BtreeLeave(p);
}
}
+/*
+** Return true if a particular Btree requires a lock. Return FALSE if
+** no lock is ever required since it is not sharable.
+*/
+SQLITE_PRIVATE int sqlite3BtreeSharable(Btree *p){
+ return p->sharable;
+}
+
#ifndef NDEBUG
/*
** Return true if the current thread holds the database connection
@@ -45248,97 +49154,42 @@
}
#endif /* NDEBUG */
-/*
-** Add a new Btree pointer to a BtreeMutexArray.
-** if the pointer can possibly be shared with
-** another database connection.
-**
-** The pointers are kept in sorted order by pBtree->pBt. That
-** way when we go to enter all the mutexes, we can enter them
-** in order without every having to backup and retry and without
-** worrying about deadlock.
-**
-** The number of shared btrees will always be small (usually 0 or 1)
-** so an insertion sort is an adequate algorithm here.
-*/
-SQLITE_PRIVATE void sqlite3BtreeMutexArrayInsert(BtreeMutexArray *pArray, Btree *pBtree){
- int i, j;
- BtShared *pBt;
- if( pBtree==0 || pBtree->sharable==0 ) return;
#ifndef NDEBUG
- {
- for(i=0; i<pArray->nMutex; i++){
- assert( pArray->aBtree[i]!=pBtree );
- }
- }
-#endif
- assert( pArray->nMutex>=0 );
- assert( pArray->nMutex<ArraySize(pArray->aBtree)-1 );
- pBt = pBtree->pBt;
- for(i=0; i<pArray->nMutex; i++){
- assert( pArray->aBtree[i]!=pBtree );
- if( pArray->aBtree[i]->pBt>pBt ){
- for(j=pArray->nMutex; j>i; j--){
- pArray->aBtree[j] = pArray->aBtree[j-1];
- }
- pArray->aBtree[i] = pBtree;
- pArray->nMutex++;
- return;
- }
- }
- pArray->aBtree[pArray->nMutex++] = pBtree;
-}
-
/*
-** Enter the mutex of every btree in the array. This routine is
-** called at the beginning of sqlite3VdbeExec(). The mutexes are
-** exited at the end of the same function.
+** Return true if the correct mutexes are held for accessing the
+** db->aDb[iDb].pSchema structure. The mutexes required for schema
+** access are:
+**
+** (1) The mutex on db
+** (2) if iDb!=1, then the mutex on db->aDb[iDb].pBt.
+**
+** If pSchema is not NULL, then iDb is computed from pSchema and
+** db using sqlite3SchemaToIndex().
*/
-SQLITE_PRIVATE void sqlite3BtreeMutexArrayEnter(BtreeMutexArray *pArray){
- int i;
- for(i=0; i<pArray->nMutex; i++){
- Btree *p = pArray->aBtree[i];
- /* Some basic sanity checking */
- assert( i==0 || pArray->aBtree[i-1]->pBt<p->pBt );
- assert( !p->locked || p->wantToLock>0 );
-
- /* We should already hold a lock on the database connection */
- assert( sqlite3_mutex_held(p->db->mutex) );
-
- /* The Btree is sharable because only sharable Btrees are entered
- ** into the array in the first place. */
- assert( p->sharable );
-
- p->wantToLock++;
- if( !p->locked ){
- lockBtreeMutex(p);
- }
- }
+SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3 *db, int iDb, Schema *pSchema){
+ Btree *p;
+ assert( db!=0 );
+ if( pSchema ) iDb = sqlite3SchemaToIndex(db, pSchema);
+ assert( iDb>=0 && iDb<db->nDb );
+ if( !sqlite3_mutex_held(db->mutex) ) return 0;
+ if( iDb==1 ) return 1;
+ p = db->aDb[iDb].pBt;
+ assert( p!=0 );
+ return p->sharable==0 || p->locked==1;
}
+#endif /* NDEBUG */
+#else /* SQLITE_THREADSAFE>0 above. SQLITE_THREADSAFE==0 below */
/*
-** Leave the mutex of every btree in the group.
+** The following are special cases for mutex enter routines for use
+** in single threaded applications that use shared cache. Except for
+** these two routines, all mutex operations are no-ops in that case and
+** are null #defines in btree.h.
+**
+** If shared cache is disabled, then all btree mutex routines, including
+** the ones below, are no-ops and are null #defines in btree.h.
*/
-SQLITE_PRIVATE void sqlite3BtreeMutexArrayLeave(BtreeMutexArray *pArray){
- int i;
- for(i=0; i<pArray->nMutex; i++){
- Btree *p = pArray->aBtree[i];
- /* Some basic sanity checking */
- assert( i==0 || pArray->aBtree[i-1]->pBt<p->pBt );
- assert( p->locked );
- assert( p->wantToLock>0 );
- /* We should already hold a lock on the database connection */
- assert( sqlite3_mutex_held(p->db->mutex) );
-
- p->wantToLock--;
- if( p->wantToLock==0 ){
- unlockBtreeMutex(p);
- }
- }
-}
-
-#else
SQLITE_PRIVATE void sqlite3BtreeEnter(Btree *p){
p->pBt->db = p->db;
}
@@ -45600,7 +49451,7 @@
/* If some other connection is holding an exclusive lock, the
** requested lock may not be obtained.
*/
- if( pBt->pWriter!=p && pBt->isExclusive ){
+ if( pBt->pWriter!=p && (pBt->btsFlags & BTS_EXCLUSIVE)!=0 ){
sqlite3ConnectionBlocked(p->db, pBt->pWriter->db);
return SQLITE_LOCKED_SHAREDCACHE;
}
@@ -45621,7 +49472,7 @@
sqlite3ConnectionBlocked(p->db, pIter->pBtree->db);
if( eLock==WRITE_LOCK ){
assert( p==pBt->pWriter );
- pBt->isPending = 1;
+ pBt->btsFlags |= BTS_PENDING;
}
return SQLITE_LOCKED_SHAREDCACHE;
}
@@ -45709,7 +49560,7 @@
** the setSharedCacheTableLock() procedure) held by Btree object p.
**
** This function assumes that Btree p has an open read or write
-** transaction. If it does not, then the BtShared.isPending variable
+** transaction. If it does not, then the BTS_PENDING flag
** may be incorrectly cleared.
*/
static void clearAllSharedCacheTableLocks(Btree *p){
@@ -45722,7 +49573,7 @@
while( *ppIter ){
BtLock *pLock = *ppIter;
- assert( pBt->isExclusive==0 || pBt->pWriter==pLock->pBtree );
+ assert( (pBt->btsFlags & BTS_EXCLUSIVE)==0 || pBt->pWriter==pLock->pBtree );
assert( pLock->pBtree->inTrans>=pLock->eLock );
if( pLock->pBtree==p ){
*ppIter = pLock->pNext;
@@ -45735,22 +49586,21 @@
}
}
- assert( pBt->isPending==0 || pBt->pWriter );
+ assert( (pBt->btsFlags & BTS_PENDING)==0 || pBt->pWriter );
if( pBt->pWriter==p ){
pBt->pWriter = 0;
- pBt->isExclusive = 0;
- pBt->isPending = 0;
+ pBt->btsFlags &= ~(BTS_EXCLUSIVE|BTS_PENDING);
}else if( pBt->nTransaction==2 ){
/* This function is called when Btree p is concluding its
** transaction. If there currently exists a writer, and p is not
** that writer, then the number of locks held by connections other
** than the writer must be about to drop to zero. In this case
- ** set the isPending flag to 0.
+ ** set the BTS_PENDING flag to 0.
**
- ** If there is not currently a writer, then BtShared.isPending must
+ ** If there is not currently a writer, then BTS_PENDING must
** be zero already. So this next line is harmless in that case.
*/
- pBt->isPending = 0;
+ pBt->btsFlags &= ~BTS_PENDING;
}
}
@@ -45762,8 +49612,7 @@
if( pBt->pWriter==p ){
BtLock *pLock;
pBt->pWriter = 0;
- pBt->isExclusive = 0;
- pBt->isPending = 0;
+ pBt->btsFlags &= ~(BTS_EXCLUSIVE|BTS_PENDING);
for(pLock=pBt->pLock; pLock; pLock=pLock->pNext){
assert( pLock->eLock==READ_LOCK || pLock->pBtree==p );
pLock->eLock = READ_LOCK;
@@ -46013,18 +49862,21 @@
int rc; /* Status code */
UnpackedRecord *pIdxKey; /* Unpacked index key */
char aSpace[150]; /* Temp space for pIdxKey - to avoid a malloc */
+ char *pFree = 0;
if( pKey ){
assert( nKey==(i64)(int)nKey );
- pIdxKey = sqlite3VdbeRecordUnpack(pCur->pKeyInfo, (int)nKey, pKey,
- aSpace, sizeof(aSpace));
+ pIdxKey = sqlite3VdbeAllocUnpackedRecord(
+ pCur->pKeyInfo, aSpace, sizeof(aSpace), &pFree
+ );
if( pIdxKey==0 ) return SQLITE_NOMEM;
+ sqlite3VdbeRecordUnpack(pCur->pKeyInfo, (int)nKey, pKey, pIdxKey);
}else{
pIdxKey = 0;
}
rc = sqlite3BtreeMovetoUnpacked(pCur, pIdxKey, nKey, bias, pRes);
- if( pKey ){
- sqlite3VdbeDeleteUnpackedRecord(pIdxKey);
+ if( pFree ){
+ sqlite3DbFree(pCur->pKeyInfo->db, pFree);
}
return rc;
}
@@ -46145,6 +49997,7 @@
*pRC = SQLITE_CORRUPT_BKPT;
goto ptrmap_exit;
}
+ assert( offset <= (int)pBt->usableSize-5 );
pPtrmap = (u8 *)sqlite3PagerGetData(pDbPage);
if( eType!=pPtrmap[offset] || get4byte(&pPtrmap[offset+1])!=parent ){
@@ -46184,6 +50037,11 @@
pPtrmap = (u8 *)sqlite3PagerGetData(pDbPage);
offset = PTRMAP_PTROFFSET(iPtrmap, key);
+ if( offset<0 ){
+ sqlite3PagerUnref(pDbPage);
+ return SQLITE_CORRUPT_BKPT;
+ }
+ assert( offset <= (int)pBt->usableSize-5 );
assert( pEType!=0 );
*pEType = pPtrmap[offset];
if( pPgno ) *pPgno = get4byte(&pPtrmap[offset+1]);
@@ -46207,7 +50065,9 @@
** This routine works only for pages that do not contain overflow cells.
*/
#define findCell(P,I) \
- ((P)->aData + ((P)->maskPage & get2byte(&(P)->aData[(P)->cellOffset+2*(I)])))
+ ((P)->aData + ((P)->maskPage & get2byte(&(P)->aCellIdx[2*(I)])))
+#define findCellv2(D,M,O,I) (D+(M&get2byte(D+(O+2*(I)))))
+
/*
** This a more complex version of findCell() that works for
@@ -46275,14 +50135,9 @@
/* This is the (easy) common case where the entire payload fits
** on the local page. No overflow is required.
*/
- int nSize; /* Total size of cell content in bytes */
- nSize = nPayload + n;
+ if( (pInfo->nSize = (u16)(n+nPayload))<4 ) pInfo->nSize = 4;
pInfo->nLocal = (u16)nPayload;
pInfo->iOverflow = 0;
- if( (nSize & ~3)==0 ){
- nSize = 4; /* Minimum cell size is 4 */
- }
- pInfo->nSize = (u16)nSize;
}else{
/* If the payload will not fit completely on the local page, we have
** to decide how much to store locally and how much to spill onto
@@ -46590,7 +50445,7 @@
*/
top -= nByte;
put2byte(&data[hdr+5], top);
- assert( top+nByte <= pPage->pBt->usableSize );
+ assert( top+nByte <= (int)pPage->pBt->usableSize );
*pIdx = top;
return SQLITE_OK;
}
@@ -46611,11 +50466,11 @@
assert( pPage->pBt!=0 );
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
assert( start>=pPage->hdrOffset+6+pPage->childPtrSize );
- assert( (start + size)<=pPage->pBt->usableSize );
+ assert( (start + size) <= (int)pPage->pBt->usableSize );
assert( sqlite3_mutex_held(pPage->pBt->mutex) );
assert( size>=0 ); /* Minimum cell size is 4 */
- if( pPage->pBt->secureDelete ){
+ if( pPage->pBt->btsFlags & BTS_SECURE_DELETE ){
/* Overwrite deleted information with zeros when the secure_delete
** option is enabled */
memset(&data[start], 0, size);
@@ -46654,7 +50509,7 @@
while( (pbegin = get2byte(&data[addr]))>0 ){
int pnext, psize, x;
assert( pbegin>addr );
- assert( pbegin<=pPage->pBt->usableSize-4 );
+ assert( pbegin <= (int)pPage->pBt->usableSize-4 );
pnext = get2byte(&data[pbegin]);
psize = get2byte(&data[pbegin+2]);
if( pbegin + psize + 3 >= pnext && pnext>0 ){
@@ -46718,6 +50573,7 @@
}else{
return SQLITE_CORRUPT_BKPT;
}
+ pPage->max1bytePayload = pBt->max1bytePayload;
return SQLITE_OK;
}
@@ -46760,6 +50616,8 @@
pPage->nOverflow = 0;
usableSize = pBt->usableSize;
pPage->cellOffset = cellOffset = hdr + 12 - 4*pPage->leaf;
+ pPage->aDataEnd = &data[usableSize];
+ pPage->aCellIdx = &data[cellOffset];
top = get2byteNotZero(&data[hdr+5]);
pPage->nCell = get2byte(&data[hdr+3]);
if( pPage->nCell>MX_CELL(pBt) ){
@@ -46851,7 +50709,7 @@
assert( sqlite3PagerGetData(pPage->pDbPage) == data );
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
assert( sqlite3_mutex_held(pBt->mutex) );
- if( pBt->secureDelete ){
+ if( pBt->btsFlags & BTS_SECURE_DELETE ){
memset(&data[hdr], 0, pBt->usableSize - hdr);
}
data[hdr] = (char)flags;
@@ -46863,6 +50721,8 @@
decodeFlags(pPage, flags);
pPage->hdrOffset = hdr;
pPage->cellOffset = first;
+ pPage->aDataEnd = &data[pBt->usableSize];
+ pPage->aCellIdx = &data[first];
pPage->nOverflow = 0;
assert( pBt->pageSize>=512 && pBt->pageSize<=65536 );
pPage->maskPage = (u16)(pBt->pageSize - 1);
@@ -47050,13 +50910,13 @@
** to problems with locking.
*/
SQLITE_PRIVATE int sqlite3BtreeOpen(
+ sqlite3_vfs *pVfs, /* VFS to use for this b-tree */
const char *zFilename, /* Name of the file containing the BTree database */
sqlite3 *db, /* Associated database handle */
Btree **ppBtree, /* Pointer to new Btree object written here */
int flags, /* Options */
int vfsFlags /* Flags passed through to sqlite3_vfs.xOpen() */
){
- sqlite3_vfs *pVfs; /* The VFS to use for this btree */
BtShared *pBt = 0; /* Shared part of btree structure */
Btree *p; /* Handle to return */
sqlite3_mutex *mutexOpen = 0; /* Prevents a race condition. Ticket #3537 */
@@ -47078,6 +50938,7 @@
#endif
assert( db!=0 );
+ assert( pVfs!=0 );
assert( sqlite3_mutex_held(db->mutex) );
assert( (flags&0xff)==flags ); /* flags fit in 8 bits */
@@ -47096,7 +50957,6 @@
if( (vfsFlags & SQLITE_OPEN_MAIN_DB)!=0 && (isMemdb || isTempDb) ){
vfsFlags = (vfsFlags & ~SQLITE_OPEN_MAIN_DB) | SQLITE_OPEN_TEMP_DB;
}
- pVfs = db->pVfs;
p = sqlite3MallocZero(sizeof(Btree));
if( !p ){
return SQLITE_NOMEM;
@@ -47117,17 +50977,24 @@
if( vfsFlags & SQLITE_OPEN_SHAREDCACHE ){
int nFullPathname = pVfs->mxPathname+1;
char *zFullPathname = sqlite3Malloc(nFullPathname);
- sqlite3_mutex *mutexShared;
+ MUTEX_LOGIC( sqlite3_mutex *mutexShared; )
p->sharable = 1;
if( !zFullPathname ){
sqlite3_free(p);
return SQLITE_NOMEM;
}
- sqlite3OsFullPathname(pVfs, zFilename, nFullPathname, zFullPathname);
+ rc = sqlite3OsFullPathname(pVfs, zFilename, nFullPathname, zFullPathname);
+ if( rc ){
+ sqlite3_free(zFullPathname);
+ sqlite3_free(p);
+ return rc;
+ }
+#if SQLITE_THREADSAFE
mutexOpen = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_OPEN);
sqlite3_mutex_enter(mutexOpen);
mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
sqlite3_mutex_enter(mutexShared);
+#endif
for(pBt=GLOBAL(BtShared*,sqlite3SharedCacheList); pBt; pBt=pBt->pNext){
assert( pBt->nRef>0 );
if( 0==strcmp(zFullPathname, sqlite3PagerFilename(pBt->pPager))
@@ -47195,9 +51062,9 @@
pBt->pCursor = 0;
pBt->pPage1 = 0;
- pBt->readOnly = sqlite3PagerIsreadonly(pBt->pPager);
+ if( sqlite3PagerIsreadonly(pBt->pPager) ) pBt->btsFlags |= BTS_READ_ONLY;
#ifdef SQLITE_SECURE_DELETE
- pBt->secureDelete = 1;
+ pBt->btsFlags |= BTS_SECURE_DELETE;
#endif
pBt->pageSize = (zDbHeader[16]<<8) | (zDbHeader[17]<<16);
if( pBt->pageSize<512 || pBt->pageSize>SQLITE_MAX_PAGE_SIZE
@@ -47218,7 +51085,7 @@
nReserve = 0;
}else{
nReserve = zDbHeader[20];
- pBt->pageSizeFixed = 1;
+ pBt->btsFlags |= BTS_PAGESIZE_FIXED;
#ifndef SQLITE_OMIT_AUTOVACUUM
pBt->autoVacuum = (get4byte(&zDbHeader[36 + 4*4])?1:0);
pBt->incrVacuum = (get4byte(&zDbHeader[36 + 7*4])?1:0);
@@ -47233,9 +51100,9 @@
/* Add the new BtShared object to the linked list sharable BtShareds.
*/
if( p->sharable ){
- sqlite3_mutex *mutexShared;
+ MUTEX_LOGIC( sqlite3_mutex *mutexShared; )
pBt->nRef = 1;
- mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+ MUTEX_LOGIC( mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);)
if( SQLITE_THREADSAFE && sqlite3GlobalConfig.bCoreMutex ){
pBt->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_FAST);
if( pBt->mutex==0 ){
@@ -47317,12 +51184,12 @@
*/
static int removeFromSharingList(BtShared *pBt){
#ifndef SQLITE_OMIT_SHARED_CACHE
- sqlite3_mutex *pMaster;
+ MUTEX_LOGIC( sqlite3_mutex *pMaster; )
BtShared *pList;
int removed = 0;
assert( sqlite3_mutex_notheld(pBt->mutex) );
- pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+ MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
sqlite3_mutex_enter(pMaster);
pBt->nRef--;
if( pBt->nRef<=0 ){
@@ -47489,7 +51356,6 @@
return rc;
}
-#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) || !defined(SQLITE_OMIT_VACUUM)
/*
** Change the default pages size and the number of reserved bytes per page.
** Or, if the page size has already been fixed, return SQLITE_READONLY
@@ -47507,7 +51373,7 @@
** If parameter nReserve is less than zero, then the number of reserved
** bytes per page is left unchanged.
**
-** If the iFix!=0 then the pageSizeFixed flag is set so that the page size
+** If the iFix!=0 then the BTS_PAGESIZE_FIXED flag is set so that the page size
** and autovacuum mode can no longer be changed.
*/
SQLITE_PRIVATE int sqlite3BtreeSetPageSize(Btree *p, int pageSize, int nReserve, int iFix){
@@ -47515,7 +51381,7 @@
BtShared *pBt = p->pBt;
assert( nReserve>=-1 && nReserve<=255 );
sqlite3BtreeEnter(p);
- if( pBt->pageSizeFixed ){
+ if( pBt->btsFlags & BTS_PAGESIZE_FIXED ){
sqlite3BtreeLeave(p);
return SQLITE_READONLY;
}
@@ -47532,7 +51398,7 @@
}
rc = sqlite3PagerSetPagesize(pBt->pPager, &pBt->pageSize, nReserve);
pBt->usableSize = pBt->pageSize - (u16)nReserve;
- if( iFix ) pBt->pageSizeFixed = 1;
+ if( iFix ) pBt->btsFlags |= BTS_PAGESIZE_FIXED;
sqlite3BtreeLeave(p);
return rc;
}
@@ -47544,6 +51410,7 @@
return p->pBt->pageSize;
}
+#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) || !defined(SQLITE_OMIT_VACUUM)
/*
** Return the number of bytes of space at the end of every page that
** are intentually left unused. This is the "reserved" space that is
@@ -47571,8 +51438,8 @@
}
/*
-** Set the secureDelete flag if newFlag is 0 or 1. If newFlag is -1,
-** then make no changes. Always return the value of the secureDelete
+** Set the BTS_SECURE_DELETE flag if newFlag is 0 or 1. If newFlag is -1,
+** then make no changes. Always return the value of the BTS_SECURE_DELETE
** setting after the change.
*/
SQLITE_PRIVATE int sqlite3BtreeSecureDelete(Btree *p, int newFlag){
@@ -47580,9 +51447,10 @@
if( p==0 ) return 0;
sqlite3BtreeEnter(p);
if( newFlag>=0 ){
- p->pBt->secureDelete = (newFlag!=0) ? 1 : 0;
+ p->pBt->btsFlags &= ~BTS_SECURE_DELETE;
+ if( newFlag ) p->pBt->btsFlags |= BTS_SECURE_DELETE;
}
- b = p->pBt->secureDelete;
+ b = (p->pBt->btsFlags & BTS_SECURE_DELETE)!=0;
sqlite3BtreeLeave(p);
return b;
}
@@ -47603,7 +51471,7 @@
u8 av = (u8)autoVacuum;
sqlite3BtreeEnter(p);
- if( pBt->pageSizeFixed && (av ?1:0)!=pBt->autoVacuum ){
+ if( (pBt->btsFlags & BTS_PAGESIZE_FIXED)!=0 && (av ?1:0)!=pBt->autoVacuum ){
rc = SQLITE_READONLY;
}else{
pBt->autoVacuum = av ?1:0;
@@ -47677,14 +51545,14 @@
#ifdef SQLITE_OMIT_WAL
if( page1[18]>1 ){
- pBt->readOnly = 1;
+ pBt->btsFlags |= BTS_READ_ONLY;
}
if( page1[19]>1 ){
goto page1_init_failed;
}
#else
if( page1[18]>2 ){
- pBt->readOnly = 1;
+ pBt->btsFlags |= BTS_READ_ONLY;
}
if( page1[19]>2 ){
goto page1_init_failed;
@@ -47698,7 +51566,7 @@
** may not be the latest version - there may be a newer one in the log
** file.
*/
- if( page1[19]==2 && pBt->doNotUseWAL==0 ){
+ if( page1[19]==2 && (pBt->btsFlags & BTS_NO_WAL)==0 ){
int isOpen = 0;
rc = sqlite3PagerOpenWal(pBt->pPager, &isOpen);
if( rc!=SQLITE_OK ){
@@ -47775,6 +51643,11 @@
pBt->minLocal = (u16)((pBt->usableSize-12)*32/255 - 23);
pBt->maxLeaf = (u16)(pBt->usableSize - 35);
pBt->minLeaf = (u16)((pBt->usableSize-12)*32/255 - 23);
+ if( pBt->maxLocal>127 ){
+ pBt->max1bytePayload = 127;
+ }else{
+ pBt->max1bytePayload = (u8)pBt->maxLocal;
+ }
assert( pBt->maxLeaf + 23 <= MX_CELL_SIZE(pBt) );
pBt->pPage1 = pPage1;
pBt->nPage = nPage;
@@ -47838,7 +51711,7 @@
data[23] = 32;
memset(&data[24], 0, 100-24);
zeroPage(pP1, PTF_INTKEY|PTF_LEAF|PTF_LEAFDATA );
- pBt->pageSizeFixed = 1;
+ pBt->btsFlags |= BTS_PAGESIZE_FIXED;
#ifndef SQLITE_OMIT_AUTOVACUUM
assert( pBt->autoVacuum==1 || pBt->autoVacuum==0 );
assert( pBt->incrVacuum==1 || pBt->incrVacuum==0 );
@@ -47902,7 +51775,7 @@
}
/* Write transactions are not possible on a read-only database */
- if( pBt->readOnly && wrflag ){
+ if( (pBt->btsFlags & BTS_READ_ONLY)!=0 && wrflag ){
rc = SQLITE_READONLY;
goto trans_begun;
}
@@ -47912,7 +51785,9 @@
** on this shared-btree structure and a second write transaction is
** requested, return SQLITE_LOCKED.
*/
- if( (wrflag && pBt->inTransaction==TRANS_WRITE) || pBt->isPending ){
+ if( (wrflag && pBt->inTransaction==TRANS_WRITE)
+ || (pBt->btsFlags & BTS_PENDING)!=0
+ ){
pBlock = pBt->pWriter->db;
}else if( wrflag>1 ){
BtLock *pIter;
@@ -47936,7 +51811,8 @@
rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK);
if( SQLITE_OK!=rc ) goto trans_begun;
- pBt->initiallyEmpty = (u8)(pBt->nPage==0);
+ pBt->btsFlags &= ~BTS_INITIALLY_EMPTY;
+ if( pBt->nPage==0 ) pBt->btsFlags |= BTS_INITIALLY_EMPTY;
do {
/* Call lockBtree() until either pBt->pPage1 is populated or
** lockBtree() returns something other than SQLITE_OK. lockBtree()
@@ -47948,7 +51824,7 @@
while( pBt->pPage1==0 && SQLITE_OK==(rc = lockBtree(pBt)) );
if( rc==SQLITE_OK && wrflag ){
- if( pBt->readOnly ){
+ if( (pBt->btsFlags & BTS_READ_ONLY)!=0 ){
rc = SQLITE_READONLY;
}else{
rc = sqlite3PagerBegin(pBt->pPager,wrflag>1,sqlite3TempInMemory(p->db));
@@ -47985,7 +51861,8 @@
#ifndef SQLITE_OMIT_SHARED_CACHE
assert( !pBt->pWriter );
pBt->pWriter = p;
- pBt->isExclusive = (u8)(wrflag>1);
+ pBt->btsFlags &= ~BTS_EXCLUSIVE;
+ if( wrflag>1 ) pBt->btsFlags |= BTS_EXCLUSIVE;
#endif
/* If the db-size header field is incorrect (as it may be if an old
@@ -48097,11 +51974,12 @@
if( eType==PTRMAP_OVERFLOW1 ){
CellInfo info;
btreeParseCellPtr(pPage, pCell, &info);
- if( info.iOverflow ){
- if( iFrom==get4byte(&pCell[info.iOverflow]) ){
- put4byte(&pCell[info.iOverflow], iTo);
- break;
- }
+ if( info.iOverflow
+ && pCell+info.iOverflow+3<=pPage->aData+pPage->maskPage
+ && iFrom==get4byte(&pCell[info.iOverflow])
+ ){
+ put4byte(&pCell[info.iOverflow], iTo);
+ break;
}
}else{
if( get4byte(pCell)==iFrom ){
@@ -48522,10 +52400,21 @@
** the rollback journal (which causes the transaction to commit) and
** drop locks.
**
+** Normally, if an error occurs while the pager layer is attempting to
+** finalize the underlying journal file, this function returns an error and
+** the upper layer will attempt a rollback. However, if the second argument
+** is non-zero then this b-tree transaction is part of a multi-file
+** transaction. In this case, the transaction has already been committed
+** (by deleting a master journal file) and the caller will ignore this
+** functions return code. So, even if an error occurs in the pager layer,
+** reset the b-tree objects internal state to indicate that the write
+** transaction has been closed. This is quite safe, as the pager will have
+** transitioned to the error state.
+**
** This will release the write lock on the database file. If there
** are no active cursors, it also releases the read lock.
*/
-SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree *p){
+SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree *p, int bCleanup){
if( p->inTrans==TRANS_NONE ) return SQLITE_OK;
sqlite3BtreeEnter(p);
@@ -48540,7 +52429,7 @@
assert( pBt->inTransaction==TRANS_WRITE );
assert( pBt->nTransaction>0 );
rc = sqlite3PagerCommitPhaseTwo(pBt->pPager);
- if( rc!=SQLITE_OK ){
+ if( rc!=SQLITE_OK && bCleanup==0 ){
sqlite3BtreeLeave(p);
return rc;
}
@@ -48560,7 +52449,7 @@
sqlite3BtreeEnter(p);
rc = sqlite3BtreeCommitPhaseOne(p, 0);
if( rc==SQLITE_OK ){
- rc = sqlite3BtreeCommitPhaseTwo(p);
+ rc = sqlite3BtreeCommitPhaseTwo(p, 0);
}
sqlite3BtreeLeave(p);
return rc;
@@ -48702,7 +52591,7 @@
BtShared *pBt = p->pBt;
sqlite3BtreeEnter(p);
assert( p->inTrans==TRANS_WRITE );
- assert( pBt->readOnly==0 );
+ assert( (pBt->btsFlags & BTS_READ_ONLY)==0 );
assert( iStatement>0 );
assert( iStatement>p->db->nSavepoint );
assert( pBt->inTransaction==TRANS_WRITE );
@@ -48737,7 +52626,9 @@
sqlite3BtreeEnter(p);
rc = sqlite3PagerSavepoint(pBt->pPager, op, iSavepoint);
if( rc==SQLITE_OK ){
- if( iSavepoint<0 && pBt->initiallyEmpty ) pBt->nPage = 0;
+ if( iSavepoint<0 && (pBt->btsFlags & BTS_INITIALLY_EMPTY)!=0 ){
+ pBt->nPage = 0;
+ }
rc = newDatabase(pBt);
pBt->nPage = get4byte(28 + pBt->pPage1->aData);
@@ -48807,11 +52698,12 @@
assert( wrFlag==0 || p->inTrans==TRANS_WRITE );
assert( pBt->pPage1 && pBt->pPage1->aData );
- if( NEVER(wrFlag && pBt->readOnly) ){
+ if( NEVER(wrFlag && (pBt->btsFlags & BTS_READ_ONLY)!=0) ){
return SQLITE_READONLY;
}
if( iTable==1 && btreePagecount(pBt)==0 ){
- return SQLITE_EMPTY;
+ assert( wrFlag==0 );
+ iTable = 0;
}
/* Now that no other errors can occur, finish filling in the BtCursor
@@ -49276,21 +53168,55 @@
/* Need to read this page properly. It contains some of the
** range of data that is being read (eOp==0) or written (eOp!=0).
*/
- DbPage *pDbPage;
+#ifdef SQLITE_DIRECT_OVERFLOW_READ
+ sqlite3_file *fd;
+#endif
int a = amt;
- rc = sqlite3PagerGet(pBt->pPager, nextPage, &pDbPage);
- if( rc==SQLITE_OK ){
- aPayload = sqlite3PagerGetData(pDbPage);
- nextPage = get4byte(aPayload);
- if( a + offset > ovflSize ){
- a = ovflSize - offset;
- }
- rc = copyPayload(&aPayload[offset+4], pBuf, a, eOp, pDbPage);
- sqlite3PagerUnref(pDbPage);
- offset = 0;
- amt -= a;
- pBuf += a;
+ if( a + offset > ovflSize ){
+ a = ovflSize - offset;
}
+
+#ifdef SQLITE_DIRECT_OVERFLOW_READ
+ /* If all the following are true:
+ **
+ ** 1) this is a read operation, and
+ ** 2) data is required from the start of this overflow page, and
+ ** 3) the database is file-backed, and
+ ** 4) there is no open write-transaction, and
+ ** 5) the database is not a WAL database,
+ **
+ ** then data can be read directly from the database file into the
+ ** output buffer, bypassing the page-cache altogether. This speeds
+ ** up loading large records that span many overflow pages.
+ */
+ if( eOp==0 /* (1) */
+ && offset==0 /* (2) */
+ && pBt->inTransaction==TRANS_READ /* (4) */
+ && (fd = sqlite3PagerFile(pBt->pPager))->pMethods /* (3) */
+ && pBt->pPage1->aData[19]==0x01 /* (5) */
+ ){
+ u8 aSave[4];
+ u8 *aWrite = &pBuf[-4];
+ memcpy(aSave, aWrite, 4);
+ rc = sqlite3OsRead(fd, aWrite, a+4, (i64)pBt->pageSize*(nextPage-1));
+ nextPage = get4byte(aWrite);
+ memcpy(aWrite, aSave, 4);
+ }else
+#endif
+
+ {
+ DbPage *pDbPage;
+ rc = sqlite3PagerGet(pBt->pPager, nextPage, &pDbPage);
+ if( rc==SQLITE_OK ){
+ aPayload = sqlite3PagerGetData(pDbPage);
+ nextPage = get4byte(aPayload);
+ rc = copyPayload(&aPayload[offset+4], pBuf, a, eOp, pDbPage);
+ sqlite3PagerUnref(pDbPage);
+ offset = 0;
+ }
+ }
+ amt -= a;
+ pBuf += a;
}
}
}
@@ -49476,7 +53402,7 @@
return SQLITE_OK;
}
-#ifndef NDEBUG
+#if 0
/*
** Page pParent is an internal (non-leaf) tree page. This function
** asserts that page number iChild is the left-child if the iIdx'th
@@ -49509,11 +53435,21 @@
assert( pCur->eState==CURSOR_VALID );
assert( pCur->iPage>0 );
assert( pCur->apPage[pCur->iPage] );
+
+ /* UPDATE: It is actually possible for the condition tested by the assert
+ ** below to be untrue if the database file is corrupt. This can occur if
+ ** one cursor has modified page pParent while a reference to it is held
+ ** by a second cursor. Which can only happen if a single page is linked
+ ** into more than one b-tree structure in a corrupt database. */
+#if 0
assertParentIndex(
pCur->apPage[pCur->iPage-1],
pCur->aiIdx[pCur->iPage-1],
pCur->apPage[pCur->iPage]->pgno
);
+#endif
+ testcase( pCur->aiIdx[pCur->iPage-1] > pCur->apPage[pCur->iPage-1]->nCell );
+
releasePage(pCur->apPage[pCur->iPage]);
pCur->iPage--;
pCur->info.nSize = 0;
@@ -49565,6 +53501,9 @@
releasePage(pCur->apPage[i]);
}
pCur->iPage = 0;
+ }else if( pCur->pgnoRoot==0 ){
+ pCur->eState = CURSOR_INVALID;
+ return SQLITE_OK;
}else{
rc = getAndInitPage(pBt, pCur->pgnoRoot, &pCur->apPage[0]);
if( rc!=SQLITE_OK ){
@@ -49674,7 +53613,7 @@
rc = moveToRoot(pCur);
if( rc==SQLITE_OK ){
if( pCur->eState==CURSOR_INVALID ){
- assert( pCur->apPage[pCur->iPage]->nCell==0 );
+ assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->nCell==0 );
*pRes = 1;
}else{
assert( pCur->apPage[pCur->iPage]->nCell>0 );
@@ -49713,7 +53652,7 @@
rc = moveToRoot(pCur);
if( rc==SQLITE_OK ){
if( CURSOR_INVALID==pCur->eState ){
- assert( pCur->apPage[pCur->iPage]->nCell==0 );
+ assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->nCell==0 );
*pRes = 1;
}else{
assert( pCur->eState==CURSOR_VALID );
@@ -49786,17 +53725,17 @@
if( rc ){
return rc;
}
- assert( pCur->apPage[pCur->iPage] );
- assert( pCur->apPage[pCur->iPage]->isInit );
- assert( pCur->apPage[pCur->iPage]->nCell>0 || pCur->eState==CURSOR_INVALID );
+ assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage] );
+ assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->isInit );
+ assert( pCur->eState==CURSOR_INVALID || pCur->apPage[pCur->iPage]->nCell>0 );
if( pCur->eState==CURSOR_INVALID ){
*pRes = -1;
- assert( pCur->apPage[pCur->iPage]->nCell==0 );
+ assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->nCell==0 );
return SQLITE_OK;
}
assert( pCur->apPage[0]->intKey || pIdxKey );
for(;;){
- int lwr, upr;
+ int lwr, upr, idx;
Pgno chldPg;
MemPage *pPage = pCur->apPage[pCur->iPage];
int c;
@@ -49812,14 +53751,14 @@
lwr = 0;
upr = pPage->nCell-1;
if( biasRight ){
- pCur->aiIdx[pCur->iPage] = (u16)upr;
+ pCur->aiIdx[pCur->iPage] = (u16)(idx = upr);
}else{
- pCur->aiIdx[pCur->iPage] = (u16)((upr+lwr)/2);
+ pCur->aiIdx[pCur->iPage] = (u16)(idx = (upr+lwr)/2);
}
for(;;){
- int idx = pCur->aiIdx[pCur->iPage]; /* Index of current cell in pPage */
u8 *pCell; /* Pointer to current cell in pPage */
+ assert( idx==pCur->aiIdx[pCur->iPage] );
pCur->info.nSize = 0;
pCell = findCell(pPage, idx) + pPage->childPtrSize;
if( pPage->intKey ){
@@ -49849,16 +53788,21 @@
** 2 bytes of the cell.
*/
int nCell = pCell[0];
- if( !(nCell & 0x80) && nCell<=pPage->maxLocal ){
+ if( nCell<=pPage->max1bytePayload
+ /* && (pCell+nCell)<pPage->aDataEnd */
+ ){
/* This branch runs if the record-size field of the cell is a
** single byte varint and the record fits entirely on the main
** b-tree page. */
+ testcase( pCell+nCell+1==pPage->aDataEnd );
c = sqlite3VdbeRecordCompare(nCell, (void*)&pCell[1], pIdxKey);
}else if( !(pCell[1] & 0x80)
&& (nCell = ((nCell&0x7f)<<7) + pCell[1])<=pPage->maxLocal
+ /* && (pCell+nCell+2)<=pPage->aDataEnd */
){
/* The record-size field is a 2 byte varint and the record
** fits entirely on the main b-tree page. */
+ testcase( pCell+nCell+2==pPage->aDataEnd );
c = sqlite3VdbeRecordCompare(nCell, (void*)&pCell[2], pIdxKey);
}else{
/* The record flows over onto one or more overflow pages. In
@@ -49886,7 +53830,6 @@
if( c==0 ){
if( pPage->intKey && !pPage->leaf ){
lwr = idx;
- upr = lwr - 1;
break;
}else{
*pRes = 0;
@@ -49902,9 +53845,9 @@
if( lwr>upr ){
break;
}
- pCur->aiIdx[pCur->iPage] = (u16)((lwr+upr)/2);
+ pCur->aiIdx[pCur->iPage] = (u16)(idx = (lwr+upr)/2);
}
- assert( lwr==upr+1 );
+ assert( lwr==upr+1 || (pPage->intKey && !pPage->leaf) );
assert( pPage->isInit );
if( pPage->leaf ){
chldPg = 0;
@@ -49976,7 +53919,13 @@
pPage = pCur->apPage[pCur->iPage];
idx = ++pCur->aiIdx[pCur->iPage];
assert( pPage->isInit );
- assert( idx<=pPage->nCell );
+
+ /* If the database file is corrupt, it is possible for the value of idx
+ ** to be invalid here. This can only occur if a second cursor modifies
+ ** the page while cursor pCur is holding a reference to it. Which can
+ ** only happen if the database is corrupt in such a way as to link the
+ ** page into more than one b-tree structure. */
+ testcase( idx>pPage->nCell );
pCur->info.nSize = 0;
pCur->validNKey = 0;
@@ -50169,8 +54118,10 @@
pTrunk = 0;
goto end_allocate_page;
}
+ assert( pTrunk!=0 );
+ assert( pTrunk->aData!=0 );
- k = get4byte(&pTrunk->aData[4]);
+ k = get4byte(&pTrunk->aData[4]); /* # of leaves on this trunk page */
if( k==0 && !searchList ){
/* The trunk has no leaves and the list is not being searched.
** So extract the trunk page itself and use it as the newly
@@ -50255,19 +54206,13 @@
u32 closest;
Pgno iPage;
unsigned char *aData = pTrunk->aData;
- rc = sqlite3PagerWrite(pTrunk->pDbPage);
- if( rc ){
- goto end_allocate_page;
- }
if( nearby>0 ){
u32 i;
int dist;
closest = 0;
- dist = get4byte(&aData[8]) - nearby;
- if( dist<0 ) dist = -dist;
+ dist = sqlite3AbsInt32(get4byte(&aData[8]) - nearby);
for(i=1; i<k; i++){
- int d2 = get4byte(&aData[8+i*4]) - nearby;
- if( d2<0 ) d2 = -d2;
+ int d2 = sqlite3AbsInt32(get4byte(&aData[8+i*4]) - nearby);
if( d2<dist ){
closest = i;
dist = d2;
@@ -50290,11 +54235,12 @@
TRACE(("ALLOCATE: %d was leaf %d of %d on trunk %d"
": %d more free pages\n",
*pPgno, closest+1, k, pTrunk->pgno, n-1));
+ rc = sqlite3PagerWrite(pTrunk->pDbPage);
+ if( rc ) goto end_allocate_page;
if( closest<k-1 ){
memcpy(&aData[8+closest*4], &aData[4+k*4], 4);
}
put4byte(&aData[4], k-1);
- assert( sqlite3PagerIswriteable(pTrunk->pDbPage) );
noContent = !btreeGetHasContent(pBt, *pPgno);
rc = btreeGetPage(pBt, *pPgno, ppPage, noContent);
if( rc==SQLITE_OK ){
@@ -50363,6 +54309,7 @@
}else{
*ppPage = 0;
}
+ assert( rc!=SQLITE_OK || sqlite3PagerIswriteable((*ppPage)->pDbPage) );
return rc;
}
@@ -50403,7 +54350,7 @@
nFree = get4byte(&pPage1->aData[36]);
put4byte(&pPage1->aData[36], nFree+1);
- if( pBt->secureDelete ){
+ if( pBt->btsFlags & BTS_SECURE_DELETE ){
/* If the secure_delete option is enabled, then
** always fully overwrite deleted information with zeros.
*/
@@ -50464,7 +54411,7 @@
if( rc==SQLITE_OK ){
put4byte(&pTrunk->aData[4], nLeaf+1);
put4byte(&pTrunk->aData[8+nLeaf*4], iPage);
- if( pPage && !pBt->secureDelete ){
+ if( pPage && (pBt->btsFlags & BTS_SECURE_DELETE)==0 ){
sqlite3PagerDontWrite(pPage->pDbPage);
}
rc = btreeSetHasContent(pBt, iPage);
@@ -50522,6 +54469,9 @@
if( info.iOverflow==0 ){
return SQLITE_OK; /* No overflow pages. Return without doing anything */
}
+ if( pCell+info.iOverflow+3 > pPage->aData+pPage->maskPage ){
+ return SQLITE_CORRUPT; /* Cell extends past end of page */
+ }
ovflPgno = get4byte(&pCell[info.iOverflow]);
assert( pBt->usableSize > 4 );
ovflPageSize = pBt->usableSize - 4;
@@ -50739,10 +54689,10 @@
** "sz" must be the number of bytes in the cell.
*/
static void dropCell(MemPage *pPage, int idx, int sz, int *pRC){
- int i; /* Loop counter */
u32 pc; /* Offset to cell content of cell being deleted */
u8 *data; /* pPage->aData */
u8 *ptr; /* Used to move bytes around within data[] */
+ u8 *endPtr; /* End of loop */
int rc; /* The return code */
int hdr; /* Beginning of the header. 0 most pages. 100 page 1 */
@@ -50753,7 +54703,7 @@
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
assert( sqlite3_mutex_held(pPage->pBt->mutex) );
data = pPage->aData;
- ptr = &data[pPage->cellOffset + 2*idx];
+ ptr = &pPage->aCellIdx[2*idx];
pc = get2byte(ptr);
hdr = pPage->hdrOffset;
testcase( pc==get2byte(&data[hdr+5]) );
@@ -50767,9 +54717,11 @@
*pRC = rc;
return;
}
- for(i=idx+1; i<pPage->nCell; i++, ptr+=2){
- ptr[0] = ptr[2];
- ptr[1] = ptr[3];
+ endPtr = &pPage->aCellIdx[2*pPage->nCell - 2];
+ assert( (SQLITE_PTR_TO_INT(ptr)&1)==0 ); /* ptr is always 2-byte aligned */
+ while( ptr<endPtr ){
+ *(u16*)ptr = *(u16*)&ptr[2];
+ ptr += 2;
}
pPage->nCell--;
put2byte(&data[hdr+3], pPage->nCell);
@@ -50809,6 +54761,7 @@
int cellOffset; /* Address of first cell pointer in data[] */
u8 *data; /* The content of the whole page */
u8 *ptr; /* Used for moving information around in data[] */
+ u8 *endPtr; /* End of the loop */
int nSkip = (iChild ? 4 : 0);
@@ -50852,16 +54805,19 @@
/* The allocateSpace() routine guarantees the following two properties
** if it returns success */
assert( idx >= end+2 );
- assert( idx+sz <= pPage->pBt->usableSize );
+ assert( idx+sz <= (int)pPage->pBt->usableSize );
pPage->nCell++;
pPage->nFree -= (u16)(2 + sz);
memcpy(&data[idx+nSkip], pCell+nSkip, sz-nSkip);
if( iChild ){
put4byte(&data[idx], iChild);
}
- for(j=end, ptr=&data[j]; j>ins; j-=2, ptr-=2){
- ptr[0] = ptr[-2];
- ptr[1] = ptr[-1];
+ ptr = &data[end];
+ endPtr = &data[ins];
+ assert( (SQLITE_PTR_TO_INT(ptr)&1)==0 ); /* ptr is always 2-byte aligned */
+ while( ptr>endPtr ){
+ *(u16*)ptr = *(u16*)&ptr[-2];
+ ptr -= 2;
}
put2byte(&data[ins], idx);
put2byte(&data[pPage->hdrOffset+3], pPage->nCell);
@@ -50895,20 +54851,22 @@
assert( pPage->nOverflow==0 );
assert( sqlite3_mutex_held(pPage->pBt->mutex) );
- assert( nCell>=0 && nCell<=MX_CELL(pPage->pBt) && MX_CELL(pPage->pBt)<=10921);
+ assert( nCell>=0 && nCell<=(int)MX_CELL(pPage->pBt)
+ && (int)MX_CELL(pPage->pBt)<=10921);
assert( sqlite3PagerIswriteable(pPage->pDbPage) );
/* Check that the page has just been zeroed by zeroPage() */
assert( pPage->nCell==0 );
assert( get2byteNotZero(&data[hdr+5])==nUsable );
- pCellptr = &data[pPage->cellOffset + nCell*2];
+ pCellptr = &pPage->aCellIdx[nCell*2];
cellbody = nUsable;
for(i=nCell-1; i>=0; i--){
+ u16 sz = aSize[i];
pCellptr -= 2;
- cellbody -= aSize[i];
+ cellbody -= sz;
put2byte(pCellptr, cellbody);
- memcpy(&data[cellbody], apCell[i], aSize[i]);
+ memcpy(&data[cellbody], apCell[i], sz);
}
put2byte(&data[hdr+3], nCell);
put2byte(&data[hdr+5], cellbody);
@@ -51109,7 +55067,7 @@
assert( pFrom->isInit );
assert( pFrom->nFree>=iToHdr );
- assert( get2byte(&aFrom[iFromHdr+5])<=pBt->usableSize );
+ assert( get2byte(&aFrom[iFromHdr+5]) <= (int)pBt->usableSize );
/* Copy the b-tree node content from page pFrom to page pTo. */
iData = get2byte(&aFrom[iFromHdr+5]);
@@ -51289,13 +55247,15 @@
** four bytes of the divider cell. So the pointer is safe to use
** later on.
**
- ** Unless SQLite is compiled in secure-delete mode. In this case,
+ ** But not if we are in secure-delete mode. In secure-delete mode,
** the dropCell() routine will overwrite the entire cell with zeroes.
** In this case, temporarily copy the cell into the aOvflSpace[]
** buffer. It will be copied out again as soon as the aSpace[] buffer
** is allocated. */
- if( pBt->secureDelete ){
- int iOff = SQLITE_PTR_TO_INT(apDiv[i]) - SQLITE_PTR_TO_INT(pParent->aData);
+ if( pBt->btsFlags & BTS_SECURE_DELETE ){
+ int iOff;
+
+ iOff = SQLITE_PTR_TO_INT(apDiv[i]) - SQLITE_PTR_TO_INT(pParent->aData);
if( (iOff+szNew[i])>(int)pBt->usableSize ){
rc = SQLITE_CORRUPT_BKPT;
memset(apOld, 0, (i+1)*sizeof(MemPage*));
@@ -51362,12 +55322,24 @@
memcpy(pOld->aData, apOld[i]->aData, pBt->pageSize);
limit = pOld->nCell+pOld->nOverflow;
- for(j=0; j<limit; j++){
- assert( nCell<nMaxCells );
- apCell[nCell] = findOverflowCell(pOld, j);
- szCell[nCell] = cellSizePtr(pOld, apCell[nCell]);
- nCell++;
- }
+ if( pOld->nOverflow>0 ){
+ for(j=0; j<limit; j++){
+ assert( nCell<nMaxCells );
+ apCell[nCell] = findOverflowCell(pOld, j);
+ szCell[nCell] = cellSizePtr(pOld, apCell[nCell]);
+ nCell++;
+ }
+ }else{
+ u8 *aData = pOld->aData;
+ u16 maskPage = pOld->maskPage;
+ u16 cellOffset = pOld->cellOffset;
+ for(j=0; j<limit; j++){
+ assert( nCell<nMaxCells );
+ apCell[nCell] = findCellv2(aData, maskPage, cellOffset, j);
+ szCell[nCell] = cellSizePtr(pOld, apCell[nCell]);
+ nCell++;
+ }
+ }
if( i<nOld-1 && !leafData){
u16 sz = (u16)szNew[i];
u8 *pTemp;
@@ -51376,7 +55348,7 @@
pTemp = &aSpace1[iSpace1];
iSpace1 += sz;
assert( sz<=pBt->maxLocal+23 );
- assert( iSpace1<=pBt->pageSize );
+ assert( iSpace1 <= (int)pBt->pageSize );
memcpy(pTemp, apDiv[i], sz);
apCell[nCell] = pTemp+leafCorrection;
assert( leafCorrection==0 || leafCorrection==4 );
@@ -51465,8 +55437,14 @@
/* Either we found one or more cells (cntnew[0])>0) or pPage is
** a virtual root page. A virtual root page is when the real root
** page is page 1 and we are the only child of that page.
+ **
+ ** UPDATE: The assert() below is not necessarily true if the database
+ ** file is corrupt. The corruption will be detected and reported later
+ ** in this procedure so there is no need to act upon it now.
*/
+#if 0
assert( cntNew[0]>0 || (pParent->pgno==1 && pParent->nCell==0) );
+#endif
TRACE(("BALANCE: old: %d %d %d ",
apOld[0]->pgno,
@@ -51541,9 +55519,7 @@
}
}
if( minI>i ){
- int t;
MemPage *pT;
- t = apNew[i]->pgno;
pT = apNew[i];
apNew[i] = apNew[minI];
apNew[minI] = pT;
@@ -51622,7 +55598,7 @@
}
iOvflSpace += sz;
assert( sz<=pBt->maxLocal+23 );
- assert( iOvflSpace<=pBt->pageSize );
+ assert( iOvflSpace <= (int)pBt->pageSize );
insertCell(pParent, nxDiv, pCell, sz, pTemp, pNew->pgno, &rc);
if( rc!=SQLITE_OK ) goto balance_cleanup;
assert( sqlite3PagerIswriteable(pParent->pDbPage) );
@@ -51705,6 +55681,7 @@
/* Cell i is the cell immediately following the last cell on old
** sibling page j. If the siblings are not leaf pages of an
** intkey b-tree, then cell i was a divider cell. */
+ assert( j+1 < ArraySize(apCopy) );
pOld = apCopy[++j];
iNextOld = i + !leafData + pOld->nCell + pOld->nOverflow;
if( pOld->nOverflow ){
@@ -52017,7 +55994,8 @@
}
assert( cursorHoldsMutex(pCur) );
- assert( pCur->wrFlag && pBt->inTransaction==TRANS_WRITE && !pBt->readOnly );
+ assert( pCur->wrFlag && pBt->inTransaction==TRANS_WRITE
+ && (pBt->btsFlags & BTS_READ_ONLY)==0 );
assert( hasSharedCacheTableLock(p, pCur->pgnoRoot, pCur->pKeyInfo!=0, 2) );
/* Assert that the caller has been consistent. If this cursor was opened
@@ -52067,7 +56045,7 @@
rc = fillInCell(pPage, newCell, pKey, nKey, pData, nData, nZero, &szNew);
if( rc ) goto end_insert;
assert( szNew==cellSizePtr(pPage, newCell) );
- assert( szNew<=MX_CELL_SIZE(pBt) );
+ assert( szNew <= MX_CELL_SIZE(pBt) );
idx = pCur->aiIdx[pCur->iPage];
if( loc==0 ){
u16 szOld;
@@ -52146,7 +56124,7 @@
assert( cursorHoldsMutex(pCur) );
assert( pBt->inTransaction==TRANS_WRITE );
- assert( !pBt->readOnly );
+ assert( (pBt->btsFlags & BTS_READ_ONLY)==0 );
assert( pCur->wrFlag );
assert( hasSharedCacheTableLock(p, pCur->pgnoRoot, pCur->pKeyInfo!=0, 2) );
assert( !hasReadConflicts(p, pCur->pgnoRoot) );
@@ -52207,7 +56185,7 @@
pCell = findCell(pLeaf, pLeaf->nCell-1);
nCell = cellSizePtr(pLeaf, pCell);
- assert( MX_CELL_SIZE(pBt)>=nCell );
+ assert( MX_CELL_SIZE(pBt) >= nCell );
allocateTempSpace(pBt);
pTmp = pBt->pTmpSpace;
@@ -52267,7 +56245,7 @@
assert( sqlite3BtreeHoldsMutex(p) );
assert( pBt->inTransaction==TRANS_WRITE );
- assert( !pBt->readOnly );
+ assert( (pBt->btsFlags & BTS_READ_ONLY)==0 );
#ifdef SQLITE_OMIT_AUTOVACUUM
rc = allocateBtreePage(pBt, &pRoot, &pgnoRoot, 1, 0);
@@ -52641,7 +56619,9 @@
/* If auto-vacuum is disabled in this build and this is an auto-vacuum
** database, mark the database as read-only. */
#ifdef SQLITE_OMIT_AUTOVACUUM
- if( idx==BTREE_LARGEST_ROOT_PAGE && *pMeta>0 ) pBt->readOnly = 1;
+ if( idx==BTREE_LARGEST_ROOT_PAGE && *pMeta>0 ){
+ pBt->btsFlags |= BTS_READ_ONLY;
+ }
#endif
sqlite3BtreeLeave(p);
@@ -52687,6 +56667,11 @@
SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *pCur, i64 *pnEntry){
i64 nEntry = 0; /* Value to return in *pnEntry */
int rc; /* Return code */
+
+ if( pCur->pgnoRoot==0 ){
+ *pnEntry = 0;
+ return SQLITE_OK;
+ }
rc = moveToRoot(pCur);
/* Unless an error occurs, the following loop runs one iteration for each
@@ -53294,8 +57279,10 @@
**
** Return SQLITE_LOCKED if this or any other connection has an open
** transaction on the shared-cache the argument Btree is connected to.
+**
+** Parameter eMode is one of SQLITE_CHECKPOINT_PASSIVE, FULL or RESTART.
*/
-SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree *p){
+SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree *p, int eMode, int *pnLog, int *pnCkpt){
int rc = SQLITE_OK;
if( p ){
BtShared *pBt = p->pBt;
@@ -53303,7 +57290,7 @@
if( pBt->inTransaction!=TRANS_NONE ){
rc = SQLITE_LOCKED;
}else{
- rc = sqlite3PagerCheckpoint(pBt->pPager);
+ rc = sqlite3PagerCheckpoint(pBt->pPager, eMode, pnLog, pnCkpt);
}
sqlite3BtreeLeave(p);
}
@@ -53343,7 +57330,7 @@
**
** Just before the shared-btree is closed, the function passed as the
** xFree argument when the memory allocation was made is invoked on the
-** blob of allocated memory. This function should not call sqlite3_free()
+** blob of allocated memory. The xFree function should not call sqlite3_free()
** on the memory, the btree layer does that.
*/
SQLITE_PRIVATE void *sqlite3BtreeSchema(Btree *p, int nBytes, void(*xFree)(void *)){
@@ -53434,7 +57421,8 @@
if( !pCsr->wrFlag ){
return SQLITE_READONLY;
}
- assert( !pCsr->pBt->readOnly && pCsr->pBt->inTransaction==TRANS_WRITE );
+ assert( (pCsr->pBt->btsFlags & BTS_READ_ONLY)==0
+ && pCsr->pBt->inTransaction==TRANS_WRITE );
assert( hasSharedCacheTableLock(pCsr->pBtree, pCsr->pgnoRoot, 0, 2) );
assert( !hasReadConflicts(pCsr->pBtree, pCsr->pgnoRoot) );
assert( pCsr->apPage[pCsr->iPage]->intKey );
@@ -53469,13 +57457,13 @@
BtShared *pBt = pBtree->pBt;
int rc; /* Return code */
- assert( pBtree->inTrans==TRANS_NONE );
assert( iVersion==1 || iVersion==2 );
/* If setting the version fields to 1, do not automatically open the
** WAL connection, even if the version fields are currently set to 2.
*/
- pBt->doNotUseWAL = (u8)(iVersion==1);
+ pBt->btsFlags &= ~BTS_NO_WAL;
+ if( iVersion==1 ) pBt->btsFlags |= BTS_NO_WAL;
rc = sqlite3BtreeBeginTrans(pBtree, 0);
if( rc==SQLITE_OK ){
@@ -53492,7 +57480,7 @@
}
}
- pBt->doNotUseWAL = 0;
+ pBt->btsFlags &= ~BTS_NO_WAL;
return rc;
}
@@ -53616,6 +57604,16 @@
}
/*
+** Attempt to set the page size of the destination to match the page size
+** of the source.
+*/
+static int setDestPgsz(sqlite3_backup *p){
+ int rc;
+ rc = sqlite3BtreeSetPageSize(p->pDest,sqlite3BtreeGetPageSize(p->pSrc),-1,0);
+ return rc;
+}
+
+/*
** Create an sqlite3_backup process to copy the contents of zSrcDb from
** connection handle pSrcDb to zDestDb in pDestDb. If successful, return
** a pointer to the new sqlite3_backup object.
@@ -53668,10 +57666,11 @@
p->iNext = 1;
p->isAttached = 0;
- if( 0==p->pSrc || 0==p->pDest ){
- /* One (or both) of the named databases did not exist. An error has
- ** already been written into the pDestDb handle. All that is left
- ** to do here is free the sqlite3_backup structure.
+ if( 0==p->pSrc || 0==p->pDest || setDestPgsz(p)==SQLITE_NOMEM ){
+ /* One (or both) of the named databases did not exist or an OOM
+ ** error was hit. The error has already been written into the
+ ** pDestDb handle. All that is left to do here is free the
+ ** sqlite3_backup structure.
*/
sqlite3_free(p);
p = 0;
@@ -53706,6 +57705,10 @@
int nDestPgsz = sqlite3BtreeGetPageSize(p->pDest);
const int nCopy = MIN(nSrcPgsz, nDestPgsz);
const i64 iEnd = (i64)iSrcPg*(i64)nSrcPgsz;
+#ifdef SQLITE_HAS_CODEC
+ int nSrcReserve = sqlite3BtreeGetReserve(p->pSrc);
+ int nDestReserve = sqlite3BtreeGetReserve(p->pDest);
+#endif
int rc = SQLITE_OK;
i64 iOff;
@@ -53724,11 +57727,22 @@
#ifdef SQLITE_HAS_CODEC
/* Backup is not possible if the page size of the destination is changing
- ** a a codec is in use.
+ ** and a codec is in use.
*/
if( nSrcPgsz!=nDestPgsz && sqlite3PagerGetCodec(pDestPager)!=0 ){
rc = SQLITE_READONLY;
}
+
+ /* Backup is not possible if the number of bytes of reserve space differ
+ ** between source and destination. If there is a difference, try to
+ ** fix the destination to agree with the source. If that is not possible,
+ ** then the backup cannot proceed.
+ */
+ if( nSrcReserve!=nDestReserve ){
+ u32 newPgsz = nSrcPgsz;
+ rc = sqlite3PagerSetPagesize(pDestPager, &newPgsz, nSrcReserve);
+ if( rc==SQLITE_OK && newPgsz!=nSrcPgsz ) rc = SQLITE_READONLY;
+ }
#endif
/* This loop runs once for each destination page spanned by the source
@@ -53882,64 +57896,74 @@
** the case where the source and destination databases have the
** same schema version.
*/
- if( rc==SQLITE_DONE
- && (rc = sqlite3BtreeUpdateMeta(p->pDest,1,p->iDestSchema+1))==SQLITE_OK
- ){
- int nDestTruncate;
-
- if( p->pDestDb ){
- sqlite3ResetInternalSchema(p->pDestDb, 0);
- }
-
- /* Set nDestTruncate to the final number of pages in the destination
- ** database. The complication here is that the destination page
- ** size may be different to the source page size.
- **
- ** If the source page size is smaller than the destination page size,
- ** round up. In this case the call to sqlite3OsTruncate() below will
- ** fix the size of the file. However it is important to call
- ** sqlite3PagerTruncateImage() here so that any pages in the
- ** destination file that lie beyond the nDestTruncate page mark are
- ** journalled by PagerCommitPhaseOne() before they are destroyed
- ** by the file truncation.
- */
- assert( pgszSrc==sqlite3BtreeGetPageSize(p->pSrc) );
- assert( pgszDest==sqlite3BtreeGetPageSize(p->pDest) );
- if( pgszSrc<pgszDest ){
- int ratio = pgszDest/pgszSrc;
- nDestTruncate = (nSrcPage+ratio-1)/ratio;
- if( nDestTruncate==(int)PENDING_BYTE_PAGE(p->pDest->pBt) ){
- nDestTruncate--;
+ if( rc==SQLITE_DONE ){
+ rc = sqlite3BtreeUpdateMeta(p->pDest,1,p->iDestSchema+1);
+ if( rc==SQLITE_OK ){
+ if( p->pDestDb ){
+ sqlite3ResetInternalSchema(p->pDestDb, -1);
}
- }else{
- nDestTruncate = nSrcPage * (pgszSrc/pgszDest);
+ if( destMode==PAGER_JOURNALMODE_WAL ){
+ rc = sqlite3BtreeSetVersion(p->pDest, 2);
+ }
}
- sqlite3PagerTruncateImage(pDestPager, nDestTruncate);
-
- if( pgszSrc<pgszDest ){
- /* If the source page-size is smaller than the destination page-size,
- ** two extra things may need to happen:
+ if( rc==SQLITE_OK ){
+ int nDestTruncate;
+ /* Set nDestTruncate to the final number of pages in the destination
+ ** database. The complication here is that the destination page
+ ** size may be different to the source page size.
**
- ** * The destination may need to be truncated, and
- **
- ** * Data stored on the pages immediately following the
- ** pending-byte page in the source database may need to be
- ** copied into the destination database.
+ ** If the source page size is smaller than the destination page size,
+ ** round up. In this case the call to sqlite3OsTruncate() below will
+ ** fix the size of the file. However it is important to call
+ ** sqlite3PagerTruncateImage() here so that any pages in the
+ ** destination file that lie beyond the nDestTruncate page mark are
+ ** journalled by PagerCommitPhaseOne() before they are destroyed
+ ** by the file truncation.
*/
- const i64 iSize = (i64)pgszSrc * (i64)nSrcPage;
- sqlite3_file * const pFile = sqlite3PagerFile(pDestPager);
+ assert( pgszSrc==sqlite3BtreeGetPageSize(p->pSrc) );
+ assert( pgszDest==sqlite3BtreeGetPageSize(p->pDest) );
+ if( pgszSrc<pgszDest ){
+ int ratio = pgszDest/pgszSrc;
+ nDestTruncate = (nSrcPage+ratio-1)/ratio;
+ if( nDestTruncate==(int)PENDING_BYTE_PAGE(p->pDest->pBt) ){
+ nDestTruncate--;
+ }
+ }else{
+ nDestTruncate = nSrcPage * (pgszSrc/pgszDest);
+ }
+ sqlite3PagerTruncateImage(pDestPager, nDestTruncate);
- assert( pFile );
- assert( (i64)nDestTruncate*(i64)pgszDest >= iSize || (
- nDestTruncate==(int)(PENDING_BYTE_PAGE(p->pDest->pBt)-1)
- && iSize>=PENDING_BYTE && iSize<=PENDING_BYTE+pgszDest
- ));
- if( SQLITE_OK==(rc = sqlite3PagerCommitPhaseOne(pDestPager, 0, 1))
- && SQLITE_OK==(rc = backupTruncateFile(pFile, iSize))
- && SQLITE_OK==(rc = sqlite3PagerSync(pDestPager))
- ){
+ if( pgszSrc<pgszDest ){
+ /* If the source page-size is smaller than the destination page-size,
+ ** two extra things may need to happen:
+ **
+ ** * The destination may need to be truncated, and
+ **
+ ** * Data stored on the pages immediately following the
+ ** pending-byte page in the source database may need to be
+ ** copied into the destination database.
+ */
+ const i64 iSize = (i64)pgszSrc * (i64)nSrcPage;
+ sqlite3_file * const pFile = sqlite3PagerFile(pDestPager);
i64 iOff;
- i64 iEnd = MIN(PENDING_BYTE + pgszDest, iSize);
+ i64 iEnd;
+
+ assert( pFile );
+ assert( (i64)nDestTruncate*(i64)pgszDest >= iSize || (
+ nDestTruncate==(int)(PENDING_BYTE_PAGE(p->pDest->pBt)-1)
+ && iSize>=PENDING_BYTE && iSize<=PENDING_BYTE+pgszDest
+ ));
+
+ /* This call ensures that all data required to recreate the original
+ ** database has been stored in the journal for pDestPager and the
+ ** journal synced to disk. So at this point we may safely modify
+ ** the database file in any way, knowing that if a power failure
+ ** occurs, the original database will be reconstructed from the
+ ** journal file. */
+ rc = sqlite3PagerCommitPhaseOne(pDestPager, 0, 1);
+
+ /* Write the extra pages and truncate the database file as required */
+ iEnd = MIN(PENDING_BYTE + pgszDest, iSize);
for(
iOff=PENDING_BYTE+pgszSrc;
rc==SQLITE_OK && iOff<iEnd;
@@ -53954,16 +57978,24 @@
}
sqlite3PagerUnref(pSrcPg);
}
+ if( rc==SQLITE_OK ){
+ rc = backupTruncateFile(pFile, iSize);
+ }
+
+ /* Sync the database file to disk. */
+ if( rc==SQLITE_OK ){
+ rc = sqlite3PagerSync(pDestPager);
+ }
+ }else{
+ rc = sqlite3PagerCommitPhaseOne(pDestPager, 0, 0);
}
- }else{
- rc = sqlite3PagerCommitPhaseOne(pDestPager, 0, 0);
- }
-
- /* Finish committing the transaction to the destination database. */
- if( SQLITE_OK==rc
- && SQLITE_OK==(rc = sqlite3BtreeCommitPhaseTwo(p->pDest))
- ){
- rc = SQLITE_DONE;
+
+ /* Finish committing the transaction to the destination database. */
+ if( SQLITE_OK==rc
+ && SQLITE_OK==(rc = sqlite3BtreeCommitPhaseTwo(p->pDest, 0))
+ ){
+ rc = SQLITE_DONE;
+ }
}
}
@@ -53975,7 +58007,7 @@
if( bCloseTrans ){
TESTONLY( int rc2 );
TESTONLY( rc2 = ) sqlite3BtreeCommitPhaseOne(p->pSrc, 0);
- TESTONLY( rc2 |= ) sqlite3BtreeCommitPhaseTwo(p->pSrc);
+ TESTONLY( rc2 |= ) sqlite3BtreeCommitPhaseTwo(p->pSrc, 0);
assert( rc2==SQLITE_OK );
}
@@ -53997,14 +58029,14 @@
*/
SQLITE_API int sqlite3_backup_finish(sqlite3_backup *p){
sqlite3_backup **pp; /* Ptr to head of pagers backup list */
- sqlite3_mutex *mutex; /* Mutex to protect source database */
+ MUTEX_LOGIC( sqlite3_mutex *mutex; ) /* Mutex to protect source database */
int rc; /* Value to return */
/* Enter the mutexes */
if( p==0 ) return SQLITE_OK;
sqlite3_mutex_enter(p->pSrcDb->mutex);
sqlite3BtreeEnter(p->pSrc);
- mutex = p->pSrcDb->mutex;
+ MUTEX_LOGIC( mutex = p->pSrcDb->mutex; )
if( p->pDestDb ){
sqlite3_mutex_enter(p->pDestDb->mutex);
}
@@ -54080,7 +58112,11 @@
** has been modified by a transaction on the source pager. Copy
** the new data into the backup.
*/
- int rc = backupOnePage(p, iPage, aData);
+ int rc;
+ assert( p->pDestDb );
+ sqlite3_mutex_enter(p->pDestDb->mutex);
+ rc = backupOnePage(p, iPage, aData);
+ sqlite3_mutex_leave(p->pDestDb->mutex);
assert( rc!=SQLITE_BUSY && rc!=SQLITE_LOCKED );
if( rc!=SQLITE_OK ){
p->rc = rc;
@@ -54119,10 +58155,20 @@
*/
SQLITE_PRIVATE int sqlite3BtreeCopyFile(Btree *pTo, Btree *pFrom){
int rc;
+ sqlite3_file *pFd; /* File descriptor for database pTo */
sqlite3_backup b;
sqlite3BtreeEnter(pTo);
sqlite3BtreeEnter(pFrom);
+ assert( sqlite3BtreeIsInTrans(pTo) );
+ pFd = sqlite3PagerFile(sqlite3BtreePager(pTo));
+ if( pFd->pMethods ){
+ i64 nByte = sqlite3BtreeGetPageSize(pFrom)*(i64)sqlite3BtreeLastPage(pFrom);
+ rc = sqlite3OsFileControl(pFd, SQLITE_FCNTL_OVERWRITE, &nByte);
+ if( rc==SQLITE_NOTFOUND ) rc = SQLITE_OK;
+ if( rc ) goto copy_finished;
+ }
+
/* Set up an sqlite3_backup object. sqlite3_backup.pDestDb must be set
** to 0. This is used by the implementations of sqlite3_backup_step()
** and sqlite3_backup_finish() to detect that they are being called
@@ -54145,9 +58191,13 @@
assert( b.rc!=SQLITE_OK );
rc = sqlite3_backup_finish(&b);
if( rc==SQLITE_OK ){
- pTo->pBt->pageSizeFixed = 0;
+ pTo->pBt->btsFlags &= ~BTS_PAGESIZE_FIXED;
+ }else{
+ sqlite3PagerClearCache(sqlite3BtreePager(b.pDest));
}
+ assert( sqlite3BtreeIsInTrans(pTo)==0 );
+copy_finished:
sqlite3BtreeLeave(pFrom);
sqlite3BtreeLeave(pTo);
return rc;
@@ -54175,12 +58225,6 @@
*/
/*
-** Call sqlite3VdbeMemExpandBlob() on the supplied value (type Mem*)
-** P if required.
-*/
-#define expandBlob(P) (((P)->flags&MEM_Zero)?sqlite3VdbeMemExpandBlob(P):0)
-
-/*
** If pMem is an object with a valid string representation, this routine
** ensures the internal encoding for the string representation is
** 'desiredEnc', one of SQLITE_UTF8, SQLITE_UTF16LE or SQLITE_UTF16BE.
@@ -54279,7 +58323,7 @@
int f;
assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) );
assert( (pMem->flags&MEM_RowSet)==0 );
- expandBlob(pMem);
+ ExpandBlob(pMem);
f = pMem->flags;
if( (f&(MEM_Str|MEM_Blob)) && pMem->z!=pMem->zMalloc ){
if( sqlite3VdbeMemGrow(pMem, pMem->n + 2, 1) ){
@@ -54427,24 +58471,18 @@
*/
SQLITE_PRIVATE void sqlite3VdbeMemReleaseExternal(Mem *p){
assert( p->db==0 || sqlite3_mutex_held(p->db->mutex) );
- testcase( p->flags & MEM_Agg );
- testcase( p->flags & MEM_Dyn );
- testcase( p->flags & MEM_RowSet );
- testcase( p->flags & MEM_Frame );
- if( p->flags&(MEM_Agg|MEM_Dyn|MEM_RowSet|MEM_Frame) ){
- if( p->flags&MEM_Agg ){
- sqlite3VdbeMemFinalize(p, p->u.pDef);
- assert( (p->flags & MEM_Agg)==0 );
- sqlite3VdbeMemRelease(p);
- }else if( p->flags&MEM_Dyn && p->xDel ){
- assert( (p->flags&MEM_RowSet)==0 );
- p->xDel((void *)p->z);
- p->xDel = 0;
- }else if( p->flags&MEM_RowSet ){
- sqlite3RowSetClear(p->u.pRowSet);
- }else if( p->flags&MEM_Frame ){
- sqlite3VdbeMemSetNull(p);
- }
+ if( p->flags&MEM_Agg ){
+ sqlite3VdbeMemFinalize(p, p->u.pDef);
+ assert( (p->flags & MEM_Agg)==0 );
+ sqlite3VdbeMemRelease(p);
+ }else if( p->flags&MEM_Dyn && p->xDel ){
+ assert( (p->flags&MEM_RowSet)==0 );
+ p->xDel((void *)p->z);
+ p->xDel = 0;
+ }else if( p->flags&MEM_RowSet ){
+ sqlite3RowSetClear(p->u.pRowSet);
+ }else if( p->flags&MEM_Frame ){
+ sqlite3VdbeMemSetNull(p);
}
}
@@ -54454,7 +58492,7 @@
** (Mem.type==SQLITE_TEXT).
*/
SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p){
- sqlite3VdbeMemReleaseExternal(p);
+ VdbeMemRelease(p);
sqlite3DbFree(p->db, p->zMalloc);
p->z = 0;
p->zMalloc = 0;
@@ -54523,7 +58561,7 @@
}else if( flags & MEM_Real ){
return doubleToInt64(pMem->r);
}else if( flags & (MEM_Str|MEM_Blob) ){
- i64 value;
+ i64 value = 0;
assert( pMem->z || pMem->n==0 );
testcase( pMem->z==0 );
sqlite3Atoi64(pMem->z, &value, pMem->n, pMem->enc);
@@ -54750,7 +58788,7 @@
** This is used for testing and debugging only - to make sure shallow
** copies are not misused.
*/
-SQLITE_PRIVATE void sqlite3VdbeMemPrepareToChange(Vdbe *pVdbe, Mem *pMem){
+SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe *pVdbe, Mem *pMem){
int i;
Mem *pX;
for(i=1, pX=&pVdbe->aMem[1]; i<=pVdbe->nMem; i++, pX++){
@@ -54776,7 +58814,7 @@
*/
SQLITE_PRIVATE void sqlite3VdbeMemShallowCopy(Mem *pTo, const Mem *pFrom, int srcType){
assert( (pFrom->flags & MEM_RowSet)==0 );
- sqlite3VdbeMemReleaseExternal(pTo);
+ VdbeMemRelease(pTo);
memcpy(pTo, pFrom, MEMCELLSIZE);
pTo->xDel = 0;
if( (pFrom->flags&MEM_Static)==0 ){
@@ -54794,7 +58832,7 @@
int rc = SQLITE_OK;
assert( (pFrom->flags & MEM_RowSet)==0 );
- sqlite3VdbeMemReleaseExternal(pTo);
+ VdbeMemRelease(pTo);
memcpy(pTo, pFrom, MEMCELLSIZE);
pTo->flags &= ~MEM_Dyn;
@@ -55122,7 +59160,7 @@
}
assert( (MEM_Blob>>3) == MEM_Str );
pVal->flags |= (pVal->flags & MEM_Blob)>>3;
- expandBlob(pVal);
+ ExpandBlob(pVal);
if( pVal->flags&MEM_Str ){
sqlite3VdbeChangeEncoding(pVal, enc & ~SQLITE_UTF16_ALIGNED);
if( (enc & SQLITE_UTF16_ALIGNED)!=0 && 1==(1&SQLITE_PTR_TO_INT(pVal->z)) ){
@@ -55131,7 +59169,7 @@
return 0;
}
}
- sqlite3VdbeMemNulTerminate(pVal); /* IMP: R-59893-45467 */
+ sqlite3VdbeMemNulTerminate(pVal); /* IMP: R-31275-44060 */
}else{
assert( (pVal->flags&MEM_Blob)==0 );
sqlite3VdbeMemStringify(pVal, enc);
@@ -55188,11 +59226,11 @@
}
op = pExpr->op;
- /* op can only be TK_REGISTER if we have compiled with SQLITE_ENABLE_STAT2.
+ /* op can only be TK_REGISTER if we have compiled with SQLITE_ENABLE_STAT3.
** The ifdef here is to enable us to achieve 100% branch test coverage even
- ** when SQLITE_ENABLE_STAT2 is omitted.
+ ** when SQLITE_ENABLE_STAT3 is omitted.
*/
-#ifdef SQLITE_ENABLE_STAT2
+#ifdef SQLITE_ENABLE_STAT3
if( op==TK_REGISTER ) op = pExpr->op2;
#else
if( NEVER(op==TK_REGISTER) ) op = pExpr->op2;
@@ -55233,11 +59271,19 @@
/* This branch happens for multiple negative signs. Ex: -(-5) */
if( SQLITE_OK==sqlite3ValueFromExpr(db,pExpr->pLeft,enc,affinity,&pVal) ){
sqlite3VdbeMemNumerify(pVal);
- pVal->u.i = -1 * pVal->u.i;
- /* (double)-1 In case of SQLITE_OMIT_FLOATING_POINT... */
- pVal->r = (double)-1 * pVal->r;
+ if( pVal->u.i==SMALLEST_INT64 ){
+ pVal->flags &= MEM_Int;
+ pVal->flags |= MEM_Real;
+ pVal->r = (double)LARGEST_INT64;
+ }else{
+ pVal->u.i = -pVal->u.i;
+ }
+ pVal->r = -pVal->r;
sqlite3ValueApplyAffinity(pVal, affinity, enc);
}
+ }else if( op==TK_NULL ){
+ pVal = sqlite3ValueNew(db);
+ if( pVal==0 ) goto no_mem;
}
#ifndef SQLITE_OMIT_BLOB_LITERAL
else if( op==TK_BLOB ){
@@ -55464,7 +59510,6 @@
pOp->p3 = p3;
pOp->p4.p = 0;
pOp->p4type = P4_NOTUSED;
- p->expired = 0;
#ifdef SQLITE_DEBUG
pOp->zComment = 0;
if( sqlite3VdbeAddopTrace ) sqlite3VdbePrintOp(0, i, &p->aOp[i]);
@@ -55504,6 +59549,21 @@
}
/*
+** Add an OP_ParseSchema opcode. This routine is broken out from
+** sqlite3VdbeAddOp4() since it needs to also needs to mark all btrees
+** as having been used.
+**
+** The zWhere string must have been obtained from sqlite3_malloc().
+** This routine will take ownership of the allocated memory.
+*/
+SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe *p, int iDb, char *zWhere){
+ int j;
+ int addr = sqlite3VdbeAddOp3(p, OP_ParseSchema, iDb, 0, 0);
+ sqlite3VdbeChangeP4(p, addr, zWhere, P4_DYNAMIC);
+ for(j=0; j<p->db->nDb; j++) sqlite3VdbeUsesBtree(p, j);
+}
+
+/*
** Add an opcode that includes the p4 value as an integer.
*/
SQLITE_PRIVATE int sqlite3VdbeAddOp4Int(
@@ -55716,7 +59776,7 @@
pOp->opflags = sqlite3OpcodeProperty[opcode];
if( opcode==OP_Function || opcode==OP_AggStep ){
if( pOp->p5>nMaxArgs ) nMaxArgs = pOp->p5;
- }else if( opcode==OP_Transaction && pOp->p2!=0 ){
+ }else if( (opcode==OP_Transaction && pOp->p2!=0) || opcode==OP_Vacuum ){
p->readOnly = 0;
#ifndef SQLITE_OMIT_VIRTUALTABLE
}else if( opcode==OP_VUpdate ){
@@ -55728,6 +59788,12 @@
n = pOp[-1].p1;
if( n>nMaxArgs ) nMaxArgs = n;
#endif
+ }else if( opcode==OP_Next || opcode==OP_SorterNext ){
+ pOp->p4.xAdvance = sqlite3BtreeNext;
+ pOp->p4type = P4_ADVANCE;
+ }else if( opcode==OP_Prev ){
+ pOp->p4.xAdvance = sqlite3BtreePrevious;
+ pOp->p4type = P4_ADVANCE;
}
if( (pOp->opflags & OPFLG_JUMP)!=0 && pOp->p2<0 ){
@@ -55765,7 +59831,7 @@
assert( aOp && !p->db->mallocFailed );
/* Check that sqlite3VdbeUsesBtree() was not called on this VM */
- assert( p->aMutex.nMutex==0 );
+ assert( p->btreeMask==0 );
resolveP2Values(p, pnMaxArg);
*pnOp = p->nOp;
@@ -55819,10 +59885,9 @@
** static array using sqlite3VdbeAddOpList but we want to make a
** few minor changes to the program.
*/
-SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe *p, int addr, int val){
+SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe *p, u32 addr, int val){
assert( p!=0 );
- assert( addr>=0 );
- if( p->nOp>addr ){
+ if( ((u32)p->nOp)>addr ){
p->aOp[addr].p1 = val;
}
}
@@ -55831,10 +59896,9 @@
** Change the value of the P2 operand for a specific instruction.
** This routine is useful for setting a jump destination.
*/
-SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe *p, int addr, int val){
+SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe *p, u32 addr, int val){
assert( p!=0 );
- assert( addr>=0 );
- if( p->nOp>addr ){
+ if( ((u32)p->nOp)>addr ){
p->aOp[addr].p2 = val;
}
}
@@ -55842,10 +59906,9 @@
/*
** Change the value of the P3 operand for a specific instruction.
*/
-SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe *p, int addr, int val){
+SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe *p, u32 addr, int val){
assert( p!=0 );
- assert( addr>=0 );
- if( p->nOp>addr ){
+ if( ((u32)p->nOp)>addr ){
p->aOp[addr].p3 = val;
}
}
@@ -55867,7 +59930,8 @@
** the address of the next instruction to be coded.
*/
SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe *p, int addr){
- sqlite3VdbeChangeP2(p, addr, p->nOp);
+ assert( addr>=0 || p->db->mallocFailed );
+ if( addr>=0 ) sqlite3VdbeChangeP2(p, addr, p->nOp);
}
@@ -55961,18 +60025,15 @@
}
/*
-** Change N opcodes starting at addr to No-ops.
+** Change the opcode at addr into OP_Noop
*/
-SQLITE_PRIVATE void sqlite3VdbeChangeToNoop(Vdbe *p, int addr, int N){
+SQLITE_PRIVATE void sqlite3VdbeChangeToNoop(Vdbe *p, int addr){
if( p->aOp ){
VdbeOp *pOp = &p->aOp[addr];
sqlite3 *db = p->db;
- while( N-- ){
- freeP4(db, pOp->p4type, pOp->p4.p);
- memset(pOp, 0, sizeof(pOp[0]));
- pOp->opcode = OP_Noop;
- pOp++;
- }
+ freeP4(db, pOp->p4type, pOp->p4.p);
+ memset(pOp, 0, sizeof(pOp[0]));
+ pOp->opcode = OP_Noop;
}
}
@@ -56075,30 +60136,29 @@
** makes the code easier to read during debugging. None of this happens
** in a production build.
*/
-SQLITE_PRIVATE void sqlite3VdbeComment(Vdbe *p, const char *zFormat, ...){
- va_list ap;
- if( !p ) return;
+static void vdbeVComment(Vdbe *p, const char *zFormat, va_list ap){
assert( p->nOp>0 || p->aOp==0 );
assert( p->aOp==0 || p->aOp[p->nOp-1].zComment==0 || p->db->mallocFailed );
if( p->nOp ){
- char **pz = &p->aOp[p->nOp-1].zComment;
+ assert( p->aOp );
+ sqlite3DbFree(p->db, p->aOp[p->nOp-1].zComment);
+ p->aOp[p->nOp-1].zComment = sqlite3VMPrintf(p->db, zFormat, ap);
+ }
+}
+SQLITE_PRIVATE void sqlite3VdbeComment(Vdbe *p, const char *zFormat, ...){
+ va_list ap;
+ if( p ){
va_start(ap, zFormat);
- sqlite3DbFree(p->db, *pz);
- *pz = sqlite3VMPrintf(p->db, zFormat, ap);
+ vdbeVComment(p, zFormat, ap);
va_end(ap);
}
}
SQLITE_PRIVATE void sqlite3VdbeNoopComment(Vdbe *p, const char *zFormat, ...){
va_list ap;
- if( !p ) return;
- sqlite3VdbeAddOp0(p, OP_Noop);
- assert( p->nOp>0 || p->aOp==0 );
- assert( p->aOp==0 || p->aOp[p->nOp-1].zComment==0 || p->db->mallocFailed );
- if( p->nOp ){
- char **pz = &p->aOp[p->nOp-1].zComment;
+ if( p ){
+ sqlite3VdbeAddOp0(p, OP_Noop);
va_start(ap, zFormat);
- sqlite3DbFree(p->db, *pz);
- *pz = sqlite3VMPrintf(p->db, zFormat, ap);
+ vdbeVComment(p, zFormat, ap);
va_end(ap);
}
}
@@ -56128,7 +60188,7 @@
SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetOp(Vdbe *p, int addr){
/* C89 specifies that the constant "dummy" will be initialized to all
** zeros, which is correct. MSVC generates a warning, nevertheless. */
- static const VdbeOp dummy; /* Ignore the MSVC warning about no initializer */
+ static VdbeOp dummy; /* Ignore the MSVC warning about no initializer */
assert( p->magic==VDBE_MAGIC_INIT );
if( addr<0 ){
#ifdef SQLITE_OMIT_TRACE
@@ -56208,13 +60268,14 @@
}
case P4_MEM: {
Mem *pMem = pOp->p4.pMem;
- assert( (pMem->flags & MEM_Null)==0 );
if( pMem->flags & MEM_Str ){
zP4 = pMem->z;
}else if( pMem->flags & MEM_Int ){
sqlite3_snprintf(nTemp, zTemp, "%lld", pMem->u.i);
}else if( pMem->flags & MEM_Real ){
sqlite3_snprintf(nTemp, zTemp, "%.16g", pMem->r);
+ }else if( pMem->flags & MEM_Null ){
+ sqlite3_snprintf(nTemp, zTemp, "NULL");
}else{
assert( pMem->flags & MEM_Blob );
zP4 = "(blob)";
@@ -56236,6 +60297,10 @@
sqlite3_snprintf(nTemp, zTemp, "program");
break;
}
+ case P4_ADVANCE: {
+ zTemp[0] = 0;
+ break;
+ }
default: {
zP4 = pOp->p4.z;
if( zP4==0 ){
@@ -56252,22 +60317,81 @@
/*
** Declare to the Vdbe that the BTree object at db->aDb[i] is used.
**
-** The prepared statement has to know in advance which Btree objects
-** will be used so that it can acquire mutexes on them all in sorted
-** order (via sqlite3VdbeMutexArrayEnter(). Mutexes are acquired
-** in order (and released in reverse order) to avoid deadlocks.
+** The prepared statements need to know in advance the complete set of
+** attached databases that will be use. A mask of these databases
+** is maintained in p->btreeMask. The p->lockMask value is the subset of
+** p->btreeMask of databases that will require a lock.
*/
SQLITE_PRIVATE void sqlite3VdbeUsesBtree(Vdbe *p, int i){
- int mask;
- assert( i>=0 && i<p->db->nDb && i<sizeof(u32)*8 );
+ assert( i>=0 && i<p->db->nDb && i<(int)sizeof(yDbMask)*8 );
assert( i<(int)sizeof(p->btreeMask)*8 );
- mask = ((u32)1)<<i;
- if( (p->btreeMask & mask)==0 ){
- p->btreeMask |= mask;
- sqlite3BtreeMutexArrayInsert(&p->aMutex, p->db->aDb[i].pBt);
+ p->btreeMask |= ((yDbMask)1)<<i;
+ if( i!=1 && sqlite3BtreeSharable(p->db->aDb[i].pBt) ){
+ p->lockMask |= ((yDbMask)1)<<i;
}
}
+#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0
+/*
+** If SQLite is compiled to support shared-cache mode and to be threadsafe,
+** this routine obtains the mutex associated with each BtShared structure
+** that may be accessed by the VM passed as an argument. In doing so it also
+** sets the BtShared.db member of each of the BtShared structures, ensuring
+** that the correct busy-handler callback is invoked if required.
+**
+** If SQLite is not threadsafe but does support shared-cache mode, then
+** sqlite3BtreeEnter() is invoked to set the BtShared.db variables
+** of all of BtShared structures accessible via the database handle
+** associated with the VM.
+**
+** If SQLite is not threadsafe and does not support shared-cache mode, this
+** function is a no-op.
+**
+** The p->btreeMask field is a bitmask of all btrees that the prepared
+** statement p will ever use. Let N be the number of bits in p->btreeMask
+** corresponding to btrees that use shared cache. Then the runtime of
+** this routine is N*N. But as N is rarely more than 1, this should not
+** be a problem.
+*/
+SQLITE_PRIVATE void sqlite3VdbeEnter(Vdbe *p){
+ int i;
+ yDbMask mask;
+ sqlite3 *db;
+ Db *aDb;
+ int nDb;
+ if( p->lockMask==0 ) return; /* The common case */
+ db = p->db;
+ aDb = db->aDb;
+ nDb = db->nDb;
+ for(i=0, mask=1; i<nDb; i++, mask += mask){
+ if( i!=1 && (mask & p->lockMask)!=0 && ALWAYS(aDb[i].pBt!=0) ){
+ sqlite3BtreeEnter(aDb[i].pBt);
+ }
+ }
+}
+#endif
+
+#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0
+/*
+** Unlock all of the btrees previously locked by a call to sqlite3VdbeEnter().
+*/
+SQLITE_PRIVATE void sqlite3VdbeLeave(Vdbe *p){
+ int i;
+ yDbMask mask;
+ sqlite3 *db;
+ Db *aDb;
+ int nDb;
+ if( p->lockMask==0 ) return; /* The common case */
+ db = p->db;
+ aDb = db->aDb;
+ nDb = db->nDb;
+ for(i=0, mask=1; i<nDb; i++, mask += mask){
+ if( i!=1 && (mask & p->lockMask)!=0 && ALWAYS(aDb[i].pBt!=0) ){
+ sqlite3BtreeLeave(aDb[i].pBt);
+ }
+ }
+}
+#endif
#if defined(VDBE_PROFILE) || defined(SQLITE_DEBUG)
/*
@@ -56327,7 +60451,7 @@
p->zMalloc = 0;
}
- p->flags = MEM_Null;
+ p->flags = MEM_Invalid;
}
db->mallocFailed = malloc_failed;
}
@@ -56374,7 +60498,7 @@
sqlite3 *db = p->db; /* The database connection */
int i; /* Loop counter */
int rc = SQLITE_OK; /* Return code */
- Mem *pMem = p->pResultSet = &p->aMem[1]; /* First Mem of result set */
+ Mem *pMem = &p->aMem[1]; /* First Mem of result set */
assert( p->explain );
assert( p->magic==VDBE_MAGIC_RUN );
@@ -56385,6 +60509,7 @@
** sqlite3_column_text16(), causing a translation to UTF-16 encoding.
*/
releaseMemArray(pMem, 8);
+ p->pResultSet = 0;
if( p->rc==SQLITE_NOMEM ){
/* This happens if a malloc() inside a call to sqlite3_column_text() or
@@ -56539,6 +60664,7 @@
}
p->nResColumn = 8 - 4*(p->explain-1);
+ p->pResultSet = &p->aMem[1];
p->rc = SQLITE_OK;
rc = SQLITE_ROW;
}
@@ -56634,34 +60760,13 @@
}
/*
-** Prepare a virtual machine for execution. This involves things such
-** as allocating stack space and initializing the program counter.
-** After the VDBE has be prepped, it can be executed by one or more
-** calls to sqlite3VdbeExec().
-**
-** This is the only way to move a VDBE from VDBE_MAGIC_INIT to
-** VDBE_MAGIC_RUN.
-**
-** This function may be called more than once on a single virtual machine.
-** The first call is made while compiling the SQL statement. Subsequent
-** calls are made as part of the process of resetting a statement to be
-** re-executed (from a call to sqlite3_reset()). The nVar, nMem, nCursor
-** and isExplain parameters are only passed correct values the first time
-** the function is called. On subsequent calls, from sqlite3_reset(), nVar
-** is passed -1 and nMem, nCursor and isExplain are all passed zero.
+** Rewind the VDBE back to the beginning in preparation for
+** running it.
*/
-SQLITE_PRIVATE void sqlite3VdbeMakeReady(
- Vdbe *p, /* The VDBE */
- int nVar, /* Number of '?' see in the SQL statement */
- int nMem, /* Number of memory cells to allocate */
- int nCursor, /* Number of cursors to allocate */
- int nArg, /* Maximum number of args in SubPrograms */
- int isExplain, /* True if the EXPLAIN keywords is present */
- int usesStmtJournal /* True to set Vdbe.usesStmtJournal */
-){
- int n;
- sqlite3 *db = p->db;
-
+SQLITE_PRIVATE void sqlite3VdbeRewind(Vdbe *p){
+#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE)
+ int i;
+#endif
assert( p!=0 );
assert( p->magic==VDBE_MAGIC_INIT );
@@ -56672,6 +60777,74 @@
/* Set the magic to VDBE_MAGIC_RUN sooner rather than later. */
p->magic = VDBE_MAGIC_RUN;
+#ifdef SQLITE_DEBUG
+ for(i=1; i<p->nMem; i++){
+ assert( p->aMem[i].db==p->db );
+ }
+#endif
+ p->pc = -1;
+ p->rc = SQLITE_OK;
+ p->errorAction = OE_Abort;
+ p->magic = VDBE_MAGIC_RUN;
+ p->nChange = 0;
+ p->cacheCtr = 1;
+ p->minWriteFileFormat = 255;
+ p->iStatement = 0;
+ p->nFkConstraint = 0;
+#ifdef VDBE_PROFILE
+ for(i=0; i<p->nOp; i++){
+ p->aOp[i].cnt = 0;
+ p->aOp[i].cycles = 0;
+ }
+#endif
+}
+
+/*
+** Prepare a virtual machine for execution for the first time after
+** creating the virtual machine. This involves things such
+** as allocating stack space and initializing the program counter.
+** After the VDBE has be prepped, it can be executed by one or more
+** calls to sqlite3VdbeExec().
+**
+** This function may be called exact once on a each virtual machine.
+** After this routine is called the VM has been "packaged" and is ready
+** to run. After this routine is called, futher calls to
+** sqlite3VdbeAddOp() functions are prohibited. This routine disconnects
+** the Vdbe from the Parse object that helped generate it so that the
+** the Vdbe becomes an independent entity and the Parse object can be
+** destroyed.
+**
+** Use the sqlite3VdbeRewind() procedure to restore a virtual machine back
+** to its initial state after it has been run.
+*/
+SQLITE_PRIVATE void sqlite3VdbeMakeReady(
+ Vdbe *p, /* The VDBE */
+ Parse *pParse /* Parsing context */
+){
+ sqlite3 *db; /* The database connection */
+ int nVar; /* Number of parameters */
+ int nMem; /* Number of VM memory registers */
+ int nCursor; /* Number of cursors required */
+ int nArg; /* Number of arguments in subprograms */
+ int nOnce; /* Number of OP_Once instructions */
+ int n; /* Loop counter */
+ u8 *zCsr; /* Memory available for allocation */
+ u8 *zEnd; /* First byte past allocated memory */
+ int nByte; /* How much extra memory is needed */
+
+ assert( p!=0 );
+ assert( p->nOp>0 );
+ assert( pParse!=0 );
+ assert( p->magic==VDBE_MAGIC_INIT );
+ db = p->db;
+ assert( db->mallocFailed==0 );
+ nVar = pParse->nVar;
+ nMem = pParse->nMem;
+ nCursor = pParse->nTab;
+ nArg = pParse->nMaxArg;
+ nOnce = pParse->nOnce;
+ if( nOnce==0 ) nOnce = 1; /* Ensure at least one byte in p->aOnceFlag[] */
+
/* For each cursor required, also allocate a memory cell. Memory
** cells (nMem+1-nCursor)..nMem, inclusive, will never be used by
** the vdbe program. Instead they are used to allocate space for
@@ -56684,91 +60857,71 @@
nMem += nCursor;
/* Allocate space for memory registers, SQL variables, VDBE cursors and
- ** an array to marshal SQL function arguments in. This is only done the
- ** first time this function is called for a given VDBE, not when it is
- ** being called from sqlite3_reset() to reset the virtual machine.
+ ** an array to marshal SQL function arguments in.
*/
- if( nVar>=0 && ALWAYS(db->mallocFailed==0) ){
- u8 *zCsr = (u8 *)&p->aOp[p->nOp]; /* Memory avaliable for alloation */
- u8 *zEnd = (u8 *)&p->aOp[p->nOpAlloc]; /* First byte past available mem */
- int nByte; /* How much extra memory needed */
+ zCsr = (u8*)&p->aOp[p->nOp]; /* Memory avaliable for allocation */
+ zEnd = (u8*)&p->aOp[p->nOpAlloc]; /* First byte past end of zCsr[] */
- resolveP2Values(p, &nArg);
- p->usesStmtJournal = (u8)usesStmtJournal;
- if( isExplain && nMem<10 ){
- nMem = 10;
+ resolveP2Values(p, &nArg);
+ p->usesStmtJournal = (u8)(pParse->isMultiWrite && pParse->mayAbort);
+ if( pParse->explain && nMem<10 ){
+ nMem = 10;
+ }
+ memset(zCsr, 0, zEnd-zCsr);
+ zCsr += (zCsr - (u8*)0)&7;
+ assert( EIGHT_BYTE_ALIGNMENT(zCsr) );
+ p->expired = 0;
+
+ /* Memory for registers, parameters, cursor, etc, is allocated in two
+ ** passes. On the first pass, we try to reuse unused space at the
+ ** end of the opcode array. If we are unable to satisfy all memory
+ ** requirements by reusing the opcode array tail, then the second
+ ** pass will fill in the rest using a fresh allocation.
+ **
+ ** This two-pass approach that reuses as much memory as possible from
+ ** the leftover space at the end of the opcode array can significantly
+ ** reduce the amount of memory held by a prepared statement.
+ */
+ do {
+ nByte = 0;
+ p->aMem = allocSpace(p->aMem, nMem*sizeof(Mem), &zCsr, zEnd, &nByte);
+ p->aVar = allocSpace(p->aVar, nVar*sizeof(Mem), &zCsr, zEnd, &nByte);
+ p->apArg = allocSpace(p->apArg, nArg*sizeof(Mem*), &zCsr, zEnd, &nByte);
+ p->azVar = allocSpace(p->azVar, nVar*sizeof(char*), &zCsr, zEnd, &nByte);
+ p->apCsr = allocSpace(p->apCsr, nCursor*sizeof(VdbeCursor*),
+ &zCsr, zEnd, &nByte);
+ p->aOnceFlag = allocSpace(p->aOnceFlag, nOnce, &zCsr, zEnd, &nByte);
+ if( nByte ){
+ p->pFree = sqlite3DbMallocZero(db, nByte);
}
- memset(zCsr, 0, zEnd-zCsr);
- zCsr += (zCsr - (u8*)0)&7;
- assert( EIGHT_BYTE_ALIGNMENT(zCsr) );
+ zCsr = p->pFree;
+ zEnd = &zCsr[nByte];
+ }while( nByte && !db->mallocFailed );
- /* Memory for registers, parameters, cursor, etc, is allocated in two
- ** passes. On the first pass, we try to reuse unused space at the
- ** end of the opcode array. If we are unable to satisfy all memory
- ** requirements by reusing the opcode array tail, then the second
- ** pass will fill in the rest using a fresh allocation.
- **
- ** This two-pass approach that reuses as much memory as possible from
- ** the leftover space at the end of the opcode array can significantly
- ** reduce the amount of memory held by a prepared statement.
- */
- do {
- nByte = 0;
- p->aMem = allocSpace(p->aMem, nMem*sizeof(Mem), &zCsr, zEnd, &nByte);
- p->aVar = allocSpace(p->aVar, nVar*sizeof(Mem), &zCsr, zEnd, &nByte);
- p->apArg = allocSpace(p->apArg, nArg*sizeof(Mem*), &zCsr, zEnd, &nByte);
- p->azVar = allocSpace(p->azVar, nVar*sizeof(char*), &zCsr, zEnd, &nByte);
- p->apCsr = allocSpace(p->apCsr, nCursor*sizeof(VdbeCursor*),
- &zCsr, zEnd, &nByte);
- if( nByte ){
- p->pFree = sqlite3DbMallocZero(db, nByte);
- }
- zCsr = p->pFree;
- zEnd = &zCsr[nByte];
- }while( nByte && !db->mallocFailed );
-
- p->nCursor = (u16)nCursor;
- if( p->aVar ){
- p->nVar = (ynVar)nVar;
- for(n=0; n<nVar; n++){
- p->aVar[n].flags = MEM_Null;
- p->aVar[n].db = db;
- }
- }
- if( p->aMem ){
- p->aMem--; /* aMem[] goes from 1..nMem */
- p->nMem = nMem; /* not from 0..nMem-1 */
- for(n=1; n<=nMem; n++){
- p->aMem[n].flags = MEM_Null;
- p->aMem[n].db = db;
- }
+ p->nCursor = (u16)nCursor;
+ p->nOnceFlag = nOnce;
+ if( p->aVar ){
+ p->nVar = (ynVar)nVar;
+ for(n=0; n<nVar; n++){
+ p->aVar[n].flags = MEM_Null;
+ p->aVar[n].db = db;
}
}
-#ifdef SQLITE_DEBUG
- for(n=1; n<p->nMem; n++){
- assert( p->aMem[n].db==db );
+ if( p->azVar ){
+ p->nzVar = pParse->nzVar;
+ memcpy(p->azVar, pParse->azVar, p->nzVar*sizeof(p->azVar[0]));
+ memset(pParse->azVar, 0, pParse->nzVar*sizeof(pParse->azVar[0]));
}
-#endif
-
- p->pc = -1;
- p->rc = SQLITE_OK;
- p->errorAction = OE_Abort;
- p->explain |= isExplain;
- p->magic = VDBE_MAGIC_RUN;
- p->nChange = 0;
- p->cacheCtr = 1;
- p->minWriteFileFormat = 255;
- p->iStatement = 0;
- p->nFkConstraint = 0;
-#ifdef VDBE_PROFILE
- {
- int i;
- for(i=0; i<p->nOp; i++){
- p->aOp[i].cnt = 0;
- p->aOp[i].cycles = 0;
+ if( p->aMem ){
+ p->aMem--; /* aMem[] goes from 1..nMem */
+ p->nMem = nMem; /* not from 0..nMem-1 */
+ for(n=1; n<=nMem; n++){
+ p->aMem[n].flags = MEM_Invalid;
+ p->aMem[n].db = db;
}
}
-#endif
+ p->explain = pParse->explain;
+ sqlite3VdbeRewind(p);
}
/*
@@ -56779,6 +60932,7 @@
if( pCx==0 ){
return;
}
+ sqlite3VdbeSorterClose(p->db, pCx);
if( pCx->pBt ){
sqlite3BtreeClose(pCx->pBt);
/* The pCx->pCursor will be close automatically, if it exists, by
@@ -56804,6 +60958,8 @@
*/
SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *pFrame){
Vdbe *v = pFrame->v;
+ v->aOnceFlag = pFrame->aOnceFlag;
+ v->nOnceFlag = pFrame->nOnceFlag;
v->aOp = pFrame->aOp;
v->nOp = pFrame->nOp;
v->aMem = pFrame->aMem;
@@ -56825,7 +60981,7 @@
*/
static void closeAllCursors(Vdbe *p){
if( p->pFrame ){
- VdbeFrame *pFrame = p->pFrame;
+ VdbeFrame *pFrame;
for(pFrame=p->pFrame; pFrame->pParent; pFrame=pFrame->pParent);
sqlite3VdbeFrameRestore(pFrame);
}
@@ -56866,8 +61022,10 @@
/* Execute assert() statements to ensure that the Vdbe.apCsr[] and
** Vdbe.aMem[] arrays have already been cleaned up. */
int i;
- for(i=0; i<p->nCursor; i++) assert( p->apCsr==0 || p->apCsr[i]==0 );
- for(i=1; i<=p->nMem; i++) assert( p->aMem==0 || p->aMem[i].flags==MEM_Null );
+ if( p->apCsr ) for(i=0; i<p->nCursor; i++) assert( p->apCsr[i]==0 );
+ if( p->aMem ){
+ for(i=1; i<=p->nMem; i++) assert( p->aMem[i].flags==MEM_Invalid );
+ }
#endif
sqlite3DbFree(db, p->zErrMsg);
@@ -57011,7 +61169,7 @@
for(i=0; rc==SQLITE_OK && i<db->nDb; i++){
Btree *pBt = db->aDb[i].pBt;
if( pBt ){
- rc = sqlite3BtreeCommitPhaseTwo(pBt);
+ rc = sqlite3BtreeCommitPhaseTwo(pBt, 0);
}
}
if( rc==SQLITE_OK ){
@@ -57032,16 +61190,32 @@
sqlite3_file *pMaster = 0;
i64 offset = 0;
int res;
+ int retryCount = 0;
+ int nMainFile;
/* Select a master journal file name */
+ nMainFile = sqlite3Strlen30(zMainFile);
+ zMaster = sqlite3MPrintf(db, "%s-mjXXXXXX9XXz", zMainFile);
+ if( zMaster==0 ) return SQLITE_NOMEM;
do {
u32 iRandom;
- sqlite3DbFree(db, zMaster);
- sqlite3_randomness(sizeof(iRandom), &iRandom);
- zMaster = sqlite3MPrintf(db, "%s-mj%08X", zMainFile, iRandom&0x7fffffff);
- if( !zMaster ){
- return SQLITE_NOMEM;
+ if( retryCount ){
+ if( retryCount>100 ){
+ sqlite3_log(SQLITE_FULL, "MJ delete: %s", zMaster);
+ sqlite3OsDelete(pVfs, zMaster, 0);
+ break;
+ }else if( retryCount==1 ){
+ sqlite3_log(SQLITE_FULL, "MJ collide: %s", zMaster);
+ }
}
+ retryCount++;
+ sqlite3_randomness(sizeof(iRandom), &iRandom);
+ sqlite3_snprintf(13, &zMaster[nMainFile], "-mj%06X9%02X",
+ (iRandom>>8)&0xffffff, iRandom&0xff);
+ /* The antipenultimate character of the master journal name must
+ ** be "9" to avoid name collisions when using 8+3 filenames. */
+ assert( zMaster[sqlite3Strlen30(zMaster)-3]=='9' );
+ sqlite3FileSuffix3(zMainFile, zMaster);
rc = sqlite3OsAccess(pVfs, zMaster, SQLITE_ACCESS_EXISTS, &res);
}while( rc==SQLITE_OK && res );
if( rc==SQLITE_OK ){
@@ -57143,7 +61317,7 @@
for(i=0; i<db->nDb; i++){
Btree *pBt = db->aDb[i].pBt;
if( pBt ){
- sqlite3BtreeCommitPhaseTwo(pBt);
+ sqlite3BtreeCommitPhaseTwo(pBt, 1);
}
}
sqlite3EndBenignMalloc();
@@ -57256,6 +61430,15 @@
db->nStatement--;
p->iStatement = 0;
+ if( rc==SQLITE_OK ){
+ if( eOp==SAVEPOINT_ROLLBACK ){
+ rc = sqlite3VtabSavepoint(db, SAVEPOINT_ROLLBACK, iSavepoint);
+ }
+ if( rc==SQLITE_OK ){
+ rc = sqlite3VtabSavepoint(db, SAVEPOINT_RELEASE, iSavepoint);
+ }
+ }
+
/* If the statement transaction is being rolled back, also restore the
** database handles deferred constraint counter to the value it had when
** the statement transaction was opened. */
@@ -57267,33 +61450,6 @@
}
/*
-** If SQLite is compiled to support shared-cache mode and to be threadsafe,
-** this routine obtains the mutex associated with each BtShared structure
-** that may be accessed by the VM passed as an argument. In doing so it
-** sets the BtShared.db member of each of the BtShared structures, ensuring
-** that the correct busy-handler callback is invoked if required.
-**
-** If SQLite is not threadsafe but does support shared-cache mode, then
-** sqlite3BtreeEnterAll() is invoked to set the BtShared.db variables
-** of all of BtShared structures accessible via the database handle
-** associated with the VM. Of course only a subset of these structures
-** will be accessed by the VM, and we could use Vdbe.btreeMask to figure
-** that subset out, but there is no advantage to doing so.
-**
-** If SQLite is not threadsafe and does not support shared-cache mode, this
-** function is a no-op.
-*/
-#ifndef SQLITE_OMIT_SHARED_CACHE
-SQLITE_PRIVATE void sqlite3VdbeMutexArrayEnter(Vdbe *p){
-#if SQLITE_THREADSAFE
- sqlite3BtreeMutexArrayEnter(&p->aMutex);
-#else
- sqlite3BtreeEnterAll(p->db);
-#endif
-}
-#endif
-
-/*
** This function is called when a transaction opened by the database
** handle associated with the VM passed as an argument is about to be
** committed. If there are outstanding deferred foreign key constraint
@@ -57352,6 +61508,7 @@
if( p->db->mallocFailed ){
p->rc = SQLITE_NOMEM;
}
+ if( p->aOnceFlag ) memset(p->aOnceFlag, 0, p->nOnceFlag);
closeAllCursors(p);
if( p->magic!=VDBE_MAGIC_RUN ){
return SQLITE_OK;
@@ -57365,7 +61522,7 @@
int isSpecialError; /* Set to true if a 'special' error */
/* Lock all btrees used by the statement */
- sqlite3VdbeMutexArrayEnter(p);
+ sqlite3VdbeEnter(p);
/* Check for one of the special errors */
mrc = p->rc & 0xff;
@@ -57416,17 +61573,22 @@
&& db->writeVdbeCnt==(p->readOnly==0)
){
if( p->rc==SQLITE_OK || (p->errorAction==OE_Fail && !isSpecialError) ){
- if( sqlite3VdbeCheckFk(p, 1) ){
- sqlite3BtreeMutexArrayLeave(&p->aMutex);
- return SQLITE_ERROR;
+ rc = sqlite3VdbeCheckFk(p, 1);
+ if( rc!=SQLITE_OK ){
+ if( NEVER(p->readOnly) ){
+ sqlite3VdbeLeave(p);
+ return SQLITE_ERROR;
+ }
+ rc = SQLITE_CONSTRAINT;
+ }else{
+ /* The auto-commit flag is true, the vdbe program was successful
+ ** or hit an 'OR FAIL' constraint and there are no deferred foreign
+ ** key constraints to hold up the transaction. This means a commit
+ ** is required. */
+ rc = vdbeCommit(db, p);
}
- /* The auto-commit flag is true, the vdbe program was successful
- ** or hit an 'OR FAIL' constraint and there are no deferred foreign
- ** key constraints to hold up the transaction. This means a commit
- ** is required. */
- rc = vdbeCommit(db, p);
- if( rc==SQLITE_BUSY ){
- sqlite3BtreeMutexArrayLeave(&p->aMutex);
+ if( rc==SQLITE_BUSY && p->readOnly ){
+ sqlite3VdbeLeave(p);
return SQLITE_BUSY;
}else if( rc!=SQLITE_OK ){
p->rc = rc;
@@ -57457,17 +61619,11 @@
** do so. If this operation returns an error, and the current statement
** error code is SQLITE_OK or SQLITE_CONSTRAINT, then promote the
** current statement error code.
- **
- ** Note that sqlite3VdbeCloseStatement() can only fail if eStatementOp
- ** is SAVEPOINT_ROLLBACK. But if p->rc==SQLITE_OK then eStatementOp
- ** must be SAVEPOINT_RELEASE. Hence the NEVER(p->rc==SQLITE_OK) in
- ** the following code.
*/
if( eStatementOp ){
rc = sqlite3VdbeCloseStatement(p, eStatementOp);
if( rc ){
- assert( eStatementOp==SAVEPOINT_ROLLBACK );
- if( NEVER(p->rc==SQLITE_OK) || p->rc==SQLITE_CONSTRAINT ){
+ if( p->rc==SQLITE_OK || p->rc==SQLITE_CONSTRAINT ){
p->rc = rc;
sqlite3DbFree(db, p->zErrMsg);
p->zErrMsg = 0;
@@ -57493,12 +61649,12 @@
/* Rollback or commit any schema changes that occurred. */
if( p->rc!=SQLITE_OK && db->flags&SQLITE_InternChanges ){
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
db->flags = (db->flags | SQLITE_InternChanges);
}
/* Release the locks */
- sqlite3BtreeMutexArrayLeave(&p->aMutex);
+ sqlite3VdbeLeave(p);
}
/* We have successfully halted and closed the VM. Record this fact. */
@@ -57524,7 +61680,7 @@
}
assert( db->activeVdbeCnt>0 || db->autoCommit==0 || db->nStatement==0 );
- return SQLITE_OK;
+ return (p->rc==SQLITE_BUSY ? SQLITE_BUSY : SQLITE_OK);
}
@@ -57537,6 +61693,30 @@
}
/*
+** Copy the error code and error message belonging to the VDBE passed
+** as the first argument to its database handle (so that they will be
+** returned by calls to sqlite3_errcode() and sqlite3_errmsg()).
+**
+** This function does not clear the VDBE error code or message, just
+** copies them to the database handle.
+*/
+SQLITE_PRIVATE int sqlite3VdbeTransferError(Vdbe *p){
+ sqlite3 *db = p->db;
+ int rc = p->rc;
+ if( p->zErrMsg ){
+ u8 mallocFailed = db->mallocFailed;
+ sqlite3BeginBenignMalloc();
+ sqlite3ValueSetStr(db->pErr, -1, p->zErrMsg, SQLITE_UTF8, SQLITE_TRANSIENT);
+ sqlite3EndBenignMalloc();
+ db->mallocFailed = mallocFailed;
+ db->errCode = rc;
+ }else{
+ sqlite3Error(db, rc, 0);
+ }
+ return rc;
+}
+
+/*
** Clean up a VDBE after execution but do not delete the VDBE just yet.
** Write any error messages into *pzErrMsg. Return the result code.
**
@@ -57563,18 +61743,9 @@
** instructions yet, leave the main database error information unchanged.
*/
if( p->pc>=0 ){
- if( p->zErrMsg ){
- sqlite3BeginBenignMalloc();
- sqlite3ValueSetStr(db->pErr,-1,p->zErrMsg,SQLITE_UTF8,SQLITE_TRANSIENT);
- sqlite3EndBenignMalloc();
- db->errCode = p->rc;
- sqlite3DbFree(db, p->zErrMsg);
- p->zErrMsg = 0;
- }else if( p->rc ){
- sqlite3Error(db, p->rc, 0);
- }else{
- sqlite3Error(db, SQLITE_OK, 0);
- }
+ sqlite3VdbeTransferError(p);
+ sqlite3DbFree(db, p->zErrMsg);
+ p->zErrMsg = 0;
if( p->runOnlyOnce ) p->expired = 1;
}else if( p->rc && p->expired ){
/* The expired flag was set on the VDBE before the first call
@@ -57660,6 +61831,7 @@
*/
SQLITE_PRIVATE void sqlite3VdbeDeleteObject(sqlite3 *db, Vdbe *p){
SubProgram *pSub, *pNext;
+ int i;
assert( p->db==0 || p->db==db );
releaseMemArray(p->aVar, p->nVar);
releaseMemArray(p->aColName, p->nResColumn*COLNAME_N);
@@ -57668,11 +61840,16 @@
vdbeFreeOpArray(db, pSub->aOp, pSub->nOp);
sqlite3DbFree(db, pSub);
}
+ for(i=p->nzVar-1; i>=0; i--) sqlite3DbFree(db, p->azVar[i]);
vdbeFreeOpArray(db, p->aOp, p->nOp);
sqlite3DbFree(db, p->aLabel);
sqlite3DbFree(db, p->aColName);
sqlite3DbFree(db, p->zSql);
sqlite3DbFree(db, p->pFree);
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
+ sqlite3DbFree(db, p->zExplain);
+ sqlite3DbFree(db, p->pExplain);
+#endif
sqlite3DbFree(db, p);
}
@@ -57800,7 +61977,13 @@
if( file_format>=4 && (i&1)==i ){
return 8+(u32)i;
}
- u = i<0 ? -i : i;
+ if( i<0 ){
+ if( i<(-MAX_6BYTE) ) return 6;
+ /* Previous test prevents: u = -(-9223372036854775808) */
+ u = -i;
+ }else{
+ u = i;
+ }
if( u<=127 ) return 1;
if( u<=32767 ) return 2;
if( u<=8388607 ) return 3;
@@ -58046,57 +62229,70 @@
return 0;
}
-
/*
-** Given the nKey-byte encoding of a record in pKey[], parse the
-** record into a UnpackedRecord structure. Return a pointer to
-** that structure.
+** This routine is used to allocate sufficient space for an UnpackedRecord
+** structure large enough to be used with sqlite3VdbeRecordUnpack() if
+** the first argument is a pointer to KeyInfo structure pKeyInfo.
**
-** The calling function might provide szSpace bytes of memory
-** space at pSpace. This space can be used to hold the returned
-** VDbeParsedRecord structure if it is large enough. If it is
-** not big enough, space is obtained from sqlite3_malloc().
+** The space is either allocated using sqlite3DbMallocRaw() or from within
+** the unaligned buffer passed via the second and third arguments (presumably
+** stack space). If the former, then *ppFree is set to a pointer that should
+** be eventually freed by the caller using sqlite3DbFree(). Or, if the
+** allocation comes from the pSpace/szSpace buffer, *ppFree is set to NULL
+** before returning.
**
-** The returned structure should be closed by a call to
-** sqlite3VdbeDeleteUnpackedRecord().
-*/
-SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeRecordUnpack(
- KeyInfo *pKeyInfo, /* Information about the record format */
- int nKey, /* Size of the binary record */
- const void *pKey, /* The binary record */
- char *pSpace, /* Unaligned space available to hold the object */
- int szSpace /* Size of pSpace[] in bytes */
+** If an OOM error occurs, NULL is returned.
+*/
+SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeAllocUnpackedRecord(
+ KeyInfo *pKeyInfo, /* Description of the record */
+ char *pSpace, /* Unaligned space available */
+ int szSpace, /* Size of pSpace[] in bytes */
+ char **ppFree /* OUT: Caller should free this pointer */
){
- const unsigned char *aKey = (const unsigned char *)pKey;
- UnpackedRecord *p; /* The unpacked record that we will return */
- int nByte; /* Memory space needed to hold p, in bytes */
- int d;
- u32 idx;
- u16 u; /* Unsigned loop counter */
- u32 szHdr;
- Mem *pMem;
- int nOff; /* Increase pSpace by this much to 8-byte align it */
-
- /*
- ** We want to shift the pointer pSpace up such that it is 8-byte aligned.
+ UnpackedRecord *p; /* Unpacked record to return */
+ int nOff; /* Increment pSpace by nOff to align it */
+ int nByte; /* Number of bytes required for *p */
+
+ /* We want to shift the pointer pSpace up such that it is 8-byte aligned.
** Thus, we need to calculate a value, nOff, between 0 and 7, to shift
** it by. If pSpace is already 8-byte aligned, nOff should be zero.
*/
nOff = (8 - (SQLITE_PTR_TO_INT(pSpace) & 7)) & 7;
- pSpace += nOff;
- szSpace -= nOff;
nByte = ROUND8(sizeof(UnpackedRecord)) + sizeof(Mem)*(pKeyInfo->nField+1);
- if( nByte>szSpace ){
- p = sqlite3DbMallocRaw(pKeyInfo->db, nByte);
- if( p==0 ) return 0;
- p->flags = UNPACKED_NEED_FREE | UNPACKED_NEED_DESTROY;
+ if( nByte>szSpace+nOff ){
+ p = (UnpackedRecord *)sqlite3DbMallocRaw(pKeyInfo->db, nByte);
+ *ppFree = (char *)p;
+ if( !p ) return 0;
}else{
- p = (UnpackedRecord*)pSpace;
- p->flags = UNPACKED_NEED_DESTROY;
+ p = (UnpackedRecord*)&pSpace[nOff];
+ *ppFree = 0;
}
+
+ p->aMem = (Mem*)&((char*)p)[ROUND8(sizeof(UnpackedRecord))];
p->pKeyInfo = pKeyInfo;
p->nField = pKeyInfo->nField + 1;
- p->aMem = pMem = (Mem*)&((char*)p)[ROUND8(sizeof(UnpackedRecord))];
+ return p;
+}
+
+/*
+** Given the nKey-byte encoding of a record in pKey[], populate the
+** UnpackedRecord structure indicated by the fourth argument with the
+** contents of the decoded record.
+*/
+SQLITE_PRIVATE void sqlite3VdbeRecordUnpack(
+ KeyInfo *pKeyInfo, /* Information about the record format */
+ int nKey, /* Size of the binary record */
+ const void *pKey, /* The binary record */
+ UnpackedRecord *p /* Populate this structure before returning. */
+){
+ const unsigned char *aKey = (const unsigned char *)pKey;
+ int d;
+ u32 idx; /* Offset in aKey[] to read from */
+ u16 u; /* Unsigned loop counter */
+ u32 szHdr;
+ Mem *pMem = p->aMem;
+
+ p->flags = 0;
assert( EIGHT_BYTE_ALIGNMENT(pMem) );
idx = getVarint32(aKey, szHdr);
d = szHdr;
@@ -58107,7 +62303,7 @@
idx += getVarint32(&aKey[idx], serial_type);
pMem->enc = pKeyInfo->enc;
pMem->db = pKeyInfo->db;
- pMem->flags = 0;
+ /* pMem->flags = 0; // sqlite3VdbeSerialGet() will set this for us */
pMem->zMalloc = 0;
d += sqlite3VdbeSerialGet(&aKey[d], serial_type, pMem);
pMem++;
@@ -58115,29 +62311,6 @@
}
assert( u<=pKeyInfo->nField + 1 );
p->nField = u;
- return (void*)p;
-}
-
-/*
-** This routine destroys a UnpackedRecord object.
-*/
-SQLITE_PRIVATE void sqlite3VdbeDeleteUnpackedRecord(UnpackedRecord *p){
- int i;
- Mem *pMem;
-
- assert( p!=0 );
- assert( p->flags & UNPACKED_NEED_DESTROY );
- for(i=0, pMem=p->aMem; i<p->nField; i++, pMem++){
- /* The unpacked record is always constructed by the
- ** sqlite3VdbeUnpackRecord() function above, which makes all
- ** strings and blobs static. And none of the elements are
- ** ever transformed, so there is never anything to delete.
- */
- if( NEVER(pMem->zMalloc) ) sqlite3VdbeMemRelease(pMem);
- }
- if( p->flags & UNPACKED_NEED_FREE ){
- sqlite3DbFree(p->pKeyInfo->db, p);
- }
}
/*
@@ -58156,15 +62329,6 @@
** Or if the UNPACKED_MATCH_PREFIX flag is set and the prefixes are
** equal, then the keys are considered to be equal and
** the parts beyond the common prefix are ignored.
-**
-** If the UNPACKED_IGNORE_ROWID flag is set, then the last byte of
-** the header of pKey1 is ignored. It is assumed that pKey1 is
-** an index key, and thus ends with a rowid value. The last byte
-** of the header will therefore be the serial type of the rowid:
-** one of 1, 2, 3, 4, 5, 6, 8, or 9 - the integer serial types.
-** The serial type of the final rowid will always be a single byte.
-** By ignoring this last byte of the header, we force the comparison
-** to ignore the rowid at the end of key1.
*/
SQLITE_PRIVATE int sqlite3VdbeRecordCompare(
int nKey1, const void *pKey1, /* Left key */
@@ -58188,7 +62352,7 @@
/* Compilers may complain that mem1.u.i is potentially uninitialized.
** We could initialize it, as shown here, to silence those complaints.
- ** But in fact, mem1.u.i will never actually be used initialized, and doing
+ ** But in fact, mem1.u.i will never actually be used uninitialized, and doing
** the unnecessary initialization has a measurable negative performance
** impact, since this routine is a very high runner. And so, we choose
** to ignore the compiler warnings and leave this variable uninitialized.
@@ -58197,9 +62361,6 @@
idx1 = getVarint32(aKey1, szHdr1);
d1 = szHdr1;
- if( pPKey2->flags & UNPACKED_IGNORE_ROWID ){
- szHdr1--;
- }
nField = pKeyInfo->nField;
while( idx1<szHdr1 && i<pPKey2->nField ){
u32 serial_type1;
@@ -58291,7 +62452,7 @@
** this code can safely assume that nCellKey is 32-bits
*/
assert( sqlite3BtreeCursorIsValid(pCur) );
- rc = sqlite3BtreeKeySize(pCur, &nCellKey);
+ VVA_ONLY(rc =) sqlite3BtreeKeySize(pCur, &nCellKey);
assert( rc==SQLITE_OK ); /* pCur is always valid so KeySize cannot fail */
assert( (nCellKey & SQLITE_MAX_U32)==(u64)nCellKey );
@@ -58366,7 +62527,7 @@
Mem m;
assert( sqlite3BtreeCursorIsValid(pCur) );
- rc = sqlite3BtreeKeySize(pCur, &nCellKey);
+ VVA_ONLY(rc =) sqlite3BtreeKeySize(pCur, &nCellKey);
assert( rc==SQLITE_OK ); /* pCur is always valid so KeySize cannot fail */
/* nCellKey will always be between 0 and 0xffffffff because of the say
** that btreeParseCellPtr() and sqlite3GetVarint32() are implemented */
@@ -58379,7 +62540,7 @@
if( rc ){
return rc;
}
- assert( pUnpacked->flags & UNPACKED_IGNORE_ROWID );
+ assert( pUnpacked->flags & UNPACKED_PREFIX_MATCH );
*res = sqlite3VdbeRecordCompare(m.n, m.z, pUnpacked);
sqlite3VdbeMemRelease(&m);
return SQLITE_OK;
@@ -58570,7 +62731,7 @@
Vdbe *v = (Vdbe*)pStmt;
sqlite3_mutex_enter(v->db->mutex);
rc = sqlite3VdbeReset(v);
- sqlite3VdbeMakeReady(v, -1, 0, 0, 0, 0, 0);
+ sqlite3VdbeRewind(v);
assert( (rc & (v->db->errMask))==rc );
rc = sqlite3ApiExit(v->db, rc);
sqlite3_mutex_leave(v->db->mutex);
@@ -58813,11 +62974,30 @@
assert(p);
if( p->magic!=VDBE_MAGIC_RUN ){
/* We used to require that sqlite3_reset() be called before retrying
- ** sqlite3_step() after any error. But after 3.6.23, we changed this
- ** so that sqlite3_reset() would be called automatically instead of
- ** throwing the error.
+ ** sqlite3_step() after any error or after SQLITE_DONE. But beginning
+ ** with version 3.7.0, we changed this so that sqlite3_reset() would
+ ** be called automatically instead of throwing the SQLITE_MISUSE error.
+ ** This "automatic-reset" change is not technically an incompatibility,
+ ** since any application that receives an SQLITE_MISUSE is broken by
+ ** definition.
+ **
+ ** Nevertheless, some published applications that were originally written
+ ** for version 3.6.23 or earlier do in fact depend on SQLITE_MISUSE
+ ** returns, and those were broken by the automatic-reset change. As a
+ ** a work-around, the SQLITE_OMIT_AUTORESET compile-time restores the
+ ** legacy behavior of returning SQLITE_MISUSE for cases where the
+ ** previous sqlite3_step() returned something other than a SQLITE_LOCKED
+ ** or SQLITE_BUSY error.
*/
+#ifdef SQLITE_OMIT_AUTORESET
+ if( p->rc==SQLITE_BUSY || p->rc==SQLITE_LOCKED ){
+ sqlite3_reset((sqlite3_stmt*)p);
+ }else{
+ return SQLITE_MISUSE_BKPT;
+ }
+#else
sqlite3_reset((sqlite3_stmt*)p);
+#endif
}
/* Check that malloc() has not failed. If it has, return early. */
@@ -58859,7 +63039,9 @@
}else
#endif /* SQLITE_OMIT_EXPLAIN */
{
+ db->vdbeExecCnt++;
rc = sqlite3VdbeExec(p);
+ db->vdbeExecCnt--;
}
#ifndef SQLITE_OMIT_TRACE
@@ -58901,12 +63083,20 @@
** error has occured, then return the error code in p->rc to the
** caller. Set the error code in the database handle to the same value.
*/
- rc = db->errCode = p->rc;
+ rc = sqlite3VdbeTransferError(p);
}
return (rc&db->errMask);
}
/*
+** The maximum number of times that a statement will try to reparse
+** itself before giving up and returning SQLITE_SCHEMA.
+*/
+#ifndef SQLITE_MAX_SCHEMA_RETRY
+# define SQLITE_MAX_SCHEMA_RETRY 5
+#endif
+
+/*
** This is the top-level implementation of sqlite3_step(). Call
** sqlite3Step() to do most of the work. If a schema error occurs,
** call sqlite3Reprepare() and try again.
@@ -58924,10 +63114,10 @@
db = v->db;
sqlite3_mutex_enter(db->mutex);
while( (rc = sqlite3Step(v))==SQLITE_SCHEMA
- && cnt++ < 5
+ && cnt++ < SQLITE_MAX_SCHEMA_RETRY
&& (rc2 = rc = sqlite3Reprepare(v))==SQLITE_OK ){
sqlite3_reset(pStmt);
- v->expired = 0;
+ assert( v->expired==0 );
}
if( rc2!=SQLITE_OK && ALWAYS(v->isPrepareV2) && ALWAYS(db->pErr) ){
/* This case occurs after failing to recompile an sql statement.
@@ -59129,31 +63319,33 @@
*/
static Mem *columnMem(sqlite3_stmt *pStmt, int i){
Vdbe *pVm;
- int vals;
Mem *pOut;
pVm = (Vdbe *)pStmt;
if( pVm && pVm->pResultSet!=0 && i<pVm->nResColumn && i>=0 ){
sqlite3_mutex_enter(pVm->db->mutex);
- vals = sqlite3_data_count(pStmt);
pOut = &pVm->pResultSet[i];
}else{
/* If the value passed as the second argument is out of range, return
** a pointer to the following static Mem object which contains the
** value SQL NULL. Even though the Mem structure contains an element
- ** of type i64, on certain architecture (x86) with certain compiler
+ ** of type i64, on certain architectures (x86) with certain compiler
** switches (-Os), gcc may align this Mem object on a 4-byte boundary
** instead of an 8-byte one. This all works fine, except that when
** running with SQLITE_DEBUG defined the SQLite code sometimes assert()s
** that a Mem structure is located on an 8-byte boundary. To prevent
- ** this assert() from failing, when building with SQLITE_DEBUG defined
- ** using gcc, force nullMem to be 8-byte aligned using the magical
+ ** these assert()s from failing, when building with SQLITE_DEBUG defined
+ ** using gcc, we force nullMem to be 8-byte aligned using the magical
** __attribute__((aligned(8))) macro. */
static const Mem nullMem
#if defined(SQLITE_DEBUG) && defined(__GNUC__)
__attribute__((aligned(8)))
#endif
- = {{0}, (double)0, 0, "", 0, MEM_Null, SQLITE_NULL, 0, 0, 0 };
+ = {0, "", (double)0, {0}, 0, MEM_Null, SQLITE_NULL, 0,
+#ifdef SQLITE_DEBUG
+ 0, 0, /* pScopyFrom, pFiller */
+#endif
+ 0, 0 };
if( pVm && ALWAYS(pVm->db) ){
sqlite3_mutex_enter(pVm->db->mutex);
@@ -59613,32 +63805,6 @@
}
/*
-** Create a mapping from variable numbers to variable names
-** in the Vdbe.azVar[] array, if such a mapping does not already
-** exist.
-*/
-static void createVarMap(Vdbe *p){
- if( !p->okVar ){
- int j;
- Op *pOp;
- sqlite3_mutex_enter(p->db->mutex);
- /* The race condition here is harmless. If two threads call this
- ** routine on the same Vdbe at the same time, they both might end
- ** up initializing the Vdbe.azVar[] array. That is a little extra
- ** work but it results in the same answer.
- */
- for(j=0, pOp=p->aOp; j<p->nOp; j++, pOp++){
- if( pOp->opcode==OP_Variable ){
- assert( pOp->p1>0 && pOp->p1<=p->nVar );
- p->azVar[pOp->p1-1] = pOp->p4.z;
- }
- }
- p->okVar = 1;
- sqlite3_mutex_leave(p->db->mutex);
- }
-}
-
-/*
** Return the name of a wildcard parameter. Return NULL if the index
** is out of range or if the wildcard is unnamed.
**
@@ -59646,10 +63812,9 @@
*/
SQLITE_API const char *sqlite3_bind_parameter_name(sqlite3_stmt *pStmt, int i){
Vdbe *p = (Vdbe*)pStmt;
- if( p==0 || i<1 || i>p->nVar ){
+ if( p==0 || i<1 || i>p->nzVar ){
return 0;
}
- createVarMap(p);
return p->azVar[i-1];
}
@@ -59663,9 +63828,8 @@
if( p==0 ){
return 0;
}
- createVarMap(p);
if( zName ){
- for(i=0; i<p->nVar; i++){
+ for(i=0; i<p->nzVar; i++){
const char *z = p->azVar[i];
if( z && memcmp(z,zName,nName)==0 && z[nName]==0 ){
return i+1;
@@ -59743,6 +63907,14 @@
}
/*
+** Return true if the prepared statement is in need of being reset.
+*/
+SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt *pStmt){
+ Vdbe *v = (Vdbe*)pStmt;
+ return v!=0 && v->pc>0 && v->magic==VDBE_MAGIC_RUN;
+}
+
+/*
** Return a pointer to the next prepared statement after pStmt associated
** with database connection pDb. If pStmt is NULL, return the first
** prepared statement for the database connection. Return NULL if there
@@ -59786,6 +63958,8 @@
**
** This file contains code used to insert the values of host parameters
** (aka "wildcards") into the SQL text output by sqlite3_trace().
+**
+** The Vdbe parse-tree explainer is also found here.
*/
#ifndef SQLITE_OMIT_TRACE
@@ -59816,9 +63990,12 @@
}
/*
-** Return a pointer to a string in memory obtained form sqlite3DbMalloc() which
-** holds a copy of zRawSql but with host parameters expanded to their
-** current bindings.
+** This function returns a pointer to a nul-terminated string in memory
+** obtained from sqlite3DbMalloc(). If sqlite3.vdbeExecCnt is 1, then the
+** string contains a copy of zRawSql but with host parameters expanded to
+** their current bindings. Or, if sqlite3.vdbeExecCnt is greater than 1,
+** then the returned string holds a copy of zRawSql with "-- " prepended
+** to each line of text.
**
** The calling function is responsible for making sure the memory returned
** is eventually freed.
@@ -59849,63 +64026,72 @@
sqlite3StrAccumInit(&out, zBase, sizeof(zBase),
db->aLimit[SQLITE_LIMIT_LENGTH]);
out.db = db;
- while( zRawSql[0] ){
- n = findNextHostParameter(zRawSql, &nToken);
- assert( n>0 );
- sqlite3StrAccumAppend(&out, zRawSql, n);
- zRawSql += n;
- assert( zRawSql[0] || nToken==0 );
- if( nToken==0 ) break;
- if( zRawSql[0]=='?' ){
- if( nToken>1 ){
- assert( sqlite3Isdigit(zRawSql[1]) );
- sqlite3GetInt32(&zRawSql[1], &idx);
- }else{
- idx = nextIndex;
- }
- }else{
- assert( zRawSql[0]==':' || zRawSql[0]=='$' || zRawSql[0]=='@' );
- testcase( zRawSql[0]==':' );
- testcase( zRawSql[0]=='$' );
- testcase( zRawSql[0]=='@' );
- idx = sqlite3VdbeParameterIndex(p, zRawSql, nToken);
- assert( idx>0 );
+ if( db->vdbeExecCnt>1 ){
+ while( *zRawSql ){
+ const char *zStart = zRawSql;
+ while( *(zRawSql++)!='\n' && *zRawSql );
+ sqlite3StrAccumAppend(&out, "-- ", 3);
+ sqlite3StrAccumAppend(&out, zStart, (int)(zRawSql-zStart));
}
- zRawSql += nToken;
- nextIndex = idx + 1;
- assert( idx>0 && idx<=p->nVar );
- pVar = &p->aVar[idx-1];
- if( pVar->flags & MEM_Null ){
- sqlite3StrAccumAppend(&out, "NULL", 4);
- }else if( pVar->flags & MEM_Int ){
- sqlite3XPrintf(&out, "%lld", pVar->u.i);
- }else if( pVar->flags & MEM_Real ){
- sqlite3XPrintf(&out, "%!.15g", pVar->r);
- }else if( pVar->flags & MEM_Str ){
+ }else{
+ while( zRawSql[0] ){
+ n = findNextHostParameter(zRawSql, &nToken);
+ assert( n>0 );
+ sqlite3StrAccumAppend(&out, zRawSql, n);
+ zRawSql += n;
+ assert( zRawSql[0] || nToken==0 );
+ if( nToken==0 ) break;
+ if( zRawSql[0]=='?' ){
+ if( nToken>1 ){
+ assert( sqlite3Isdigit(zRawSql[1]) );
+ sqlite3GetInt32(&zRawSql[1], &idx);
+ }else{
+ idx = nextIndex;
+ }
+ }else{
+ assert( zRawSql[0]==':' || zRawSql[0]=='$' || zRawSql[0]=='@' );
+ testcase( zRawSql[0]==':' );
+ testcase( zRawSql[0]=='$' );
+ testcase( zRawSql[0]=='@' );
+ idx = sqlite3VdbeParameterIndex(p, zRawSql, nToken);
+ assert( idx>0 );
+ }
+ zRawSql += nToken;
+ nextIndex = idx + 1;
+ assert( idx>0 && idx<=p->nVar );
+ pVar = &p->aVar[idx-1];
+ if( pVar->flags & MEM_Null ){
+ sqlite3StrAccumAppend(&out, "NULL", 4);
+ }else if( pVar->flags & MEM_Int ){
+ sqlite3XPrintf(&out, "%lld", pVar->u.i);
+ }else if( pVar->flags & MEM_Real ){
+ sqlite3XPrintf(&out, "%!.15g", pVar->r);
+ }else if( pVar->flags & MEM_Str ){
#ifndef SQLITE_OMIT_UTF16
- u8 enc = ENC(db);
- if( enc!=SQLITE_UTF8 ){
- Mem utf8;
- memset(&utf8, 0, sizeof(utf8));
- utf8.db = db;
- sqlite3VdbeMemSetStr(&utf8, pVar->z, pVar->n, enc, SQLITE_STATIC);
- sqlite3VdbeChangeEncoding(&utf8, SQLITE_UTF8);
- sqlite3XPrintf(&out, "'%.*q'", utf8.n, utf8.z);
- sqlite3VdbeMemRelease(&utf8);
- }else
+ u8 enc = ENC(db);
+ if( enc!=SQLITE_UTF8 ){
+ Mem utf8;
+ memset(&utf8, 0, sizeof(utf8));
+ utf8.db = db;
+ sqlite3VdbeMemSetStr(&utf8, pVar->z, pVar->n, enc, SQLITE_STATIC);
+ sqlite3VdbeChangeEncoding(&utf8, SQLITE_UTF8);
+ sqlite3XPrintf(&out, "'%.*q'", utf8.n, utf8.z);
+ sqlite3VdbeMemRelease(&utf8);
+ }else
#endif
- {
- sqlite3XPrintf(&out, "'%.*q'", pVar->n, pVar->z);
+ {
+ sqlite3XPrintf(&out, "'%.*q'", pVar->n, pVar->z);
+ }
+ }else if( pVar->flags & MEM_Zero ){
+ sqlite3XPrintf(&out, "zeroblob(%d)", pVar->u.nZero);
+ }else{
+ assert( pVar->flags & MEM_Blob );
+ sqlite3StrAccumAppend(&out, "x'", 2);
+ for(i=0; i<pVar->n; i++){
+ sqlite3XPrintf(&out, "%02x", pVar->z[i]&0xff);
+ }
+ sqlite3StrAccumAppend(&out, "'", 1);
}
- }else if( pVar->flags & MEM_Zero ){
- sqlite3XPrintf(&out, "zeroblob(%d)", pVar->u.nZero);
- }else{
- assert( pVar->flags & MEM_Blob );
- sqlite3StrAccumAppend(&out, "x'", 2);
- for(i=0; i<pVar->n; i++){
- sqlite3XPrintf(&out, "%02x", pVar->z[i]&0xff);
- }
- sqlite3StrAccumAppend(&out, "'", 1);
}
}
return sqlite3StrAccumFinish(&out);
@@ -59913,6 +64099,121 @@
#endif /* #ifndef SQLITE_OMIT_TRACE */
+/*****************************************************************************
+** The following code implements the data-structure explaining logic
+** for the Vdbe.
+*/
+
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
+
+/*
+** Allocate a new Explain object
+*/
+SQLITE_PRIVATE void sqlite3ExplainBegin(Vdbe *pVdbe){
+ if( pVdbe ){
+ sqlite3BeginBenignMalloc();
+ Explain *p = sqlite3_malloc( sizeof(Explain) );
+ if( p ){
+ memset(p, 0, sizeof(*p));
+ p->pVdbe = pVdbe;
+ sqlite3_free(pVdbe->pExplain);
+ pVdbe->pExplain = p;
+ sqlite3StrAccumInit(&p->str, p->zBase, sizeof(p->zBase),
+ SQLITE_MAX_LENGTH);
+ p->str.useMalloc = 2;
+ }else{
+ sqlite3EndBenignMalloc();
+ }
+ }
+}
+
+/*
+** Return true if the Explain ends with a new-line.
+*/
+static int endsWithNL(Explain *p){
+ return p && p->str.zText && p->str.nChar
+ && p->str.zText[p->str.nChar-1]=='\n';
+}
+
+/*
+** Append text to the indentation
+*/
+SQLITE_PRIVATE void sqlite3ExplainPrintf(Vdbe *pVdbe, const char *zFormat, ...){
+ Explain *p;
+ if( pVdbe && (p = pVdbe->pExplain)!=0 ){
+ va_list ap;
+ if( p->nIndent && endsWithNL(p) ){
+ int n = p->nIndent;
+ if( n>ArraySize(p->aIndent) ) n = ArraySize(p->aIndent);
+ sqlite3AppendSpace(&p->str, p->aIndent[n-1]);
+ }
+ va_start(ap, zFormat);
+ sqlite3VXPrintf(&p->str, 1, zFormat, ap);
+ va_end(ap);
+ }
+}
+
+/*
+** Append a '\n' if there is not already one.
+*/
+SQLITE_PRIVATE void sqlite3ExplainNL(Vdbe *pVdbe){
+ Explain *p;
+ if( pVdbe && (p = pVdbe->pExplain)!=0 && !endsWithNL(p) ){
+ sqlite3StrAccumAppend(&p->str, "\n", 1);
+ }
+}
+
+/*
+** Push a new indentation level. Subsequent lines will be indented
+** so that they begin at the current cursor position.
+*/
+SQLITE_PRIVATE void sqlite3ExplainPush(Vdbe *pVdbe){
+ Explain *p;
+ if( pVdbe && (p = pVdbe->pExplain)!=0 ){
+ if( p->str.zText && p->nIndent<ArraySize(p->aIndent) ){
+ const char *z = p->str.zText;
+ int i = p->str.nChar-1;
+ int x;
+ while( i>=0 && z[i]!='\n' ){ i--; }
+ x = (p->str.nChar - 1) - i;
+ if( p->nIndent && x<p->aIndent[p->nIndent-1] ){
+ x = p->aIndent[p->nIndent-1];
+ }
+ p->aIndent[p->nIndent] = x;
+ }
+ p->nIndent++;
+ }
+}
+
+/*
+** Pop the indentation stack by one level.
+*/
+SQLITE_PRIVATE void sqlite3ExplainPop(Vdbe *p){
+ if( p && p->pExplain ) p->pExplain->nIndent--;
+}
+
+/*
+** Free the indentation structure
+*/
+SQLITE_PRIVATE void sqlite3ExplainFinish(Vdbe *pVdbe){
+ if( pVdbe && pVdbe->pExplain ){
+ sqlite3_free(pVdbe->zExplain);
+ sqlite3ExplainNL(pVdbe);
+ pVdbe->zExplain = sqlite3StrAccumFinish(&pVdbe->pExplain->str);
+ sqlite3_free(pVdbe->pExplain);
+ pVdbe->pExplain = 0;
+ sqlite3EndBenignMalloc();
+ }
+}
+
+/*
+** Return the explanation of a virtual machine.
+*/
+SQLITE_PRIVATE const char *sqlite3VdbeExplanation(Vdbe *pVdbe){
+ return (pVdbe && pVdbe->zExplain) ? pVdbe->zExplain : 0;
+}
+#endif /* defined(SQLITE_DEBUG) */
+
/************** End of vdbetrace.c *******************************************/
/************** Begin file vdbe.c ********************************************/
/*
@@ -59967,7 +64268,7 @@
** not misused.
*/
#ifdef SQLITE_DEBUG
-# define memAboutToChange(P,M) sqlite3VdbeMemPrepareToChange(P,M)
+# define memAboutToChange(P,M) sqlite3VdbeMemAboutToChange(P,M)
#else
# define memAboutToChange(P,M)
#endif
@@ -59985,8 +64286,8 @@
/*
** When this global variable is positive, it gets decremented once before
-** each instruction in the VDBE. When reaches zero, the u1.isInterrupted
-** field of the sqlite3 structure is set in order to simulate and interrupt.
+** each instruction in the VDBE. When it reaches zero, the u1.isInterrupted
+** field of the sqlite3 structure is set in order to simulate an interrupt.
**
** This facility is used for testing purposes only. It does not function
** in an ordinary build.
@@ -60066,11 +64367,12 @@
if( ((P)->flags&MEM_Ephem)!=0 \
&& sqlite3VdbeMemMakeWriteable(P) ){ goto no_mem;}
-/*
-** Call sqlite3VdbeMemExpandBlob() on the supplied value (type Mem*)
-** P if required.
-*/
-#define ExpandBlob(P) (((P)->flags&MEM_Zero)?sqlite3VdbeMemExpandBlob(P):0)
+/* Return true if the cursor was opened using the OP_OpenSorter opcode. */
+#ifdef SQLITE_OMIT_MERGE_SORT
+# define isSorter(x) 0
+#else
+# define isSorter(x) ((x)->pSorter!=0)
+#endif
/*
** Argument pMem points at a register that will be passed to a
@@ -60104,7 +64406,7 @@
Vdbe *p, /* The virtual machine */
int iCur, /* Index of the new VdbeCursor */
int nField, /* Number of fields in the table or index */
- int iDb, /* When database the cursor belongs to, or -1 */
+ int iDb, /* Database the cursor belongs to, or -1 */
int isBtreeCursor /* True for B-Tree. False for pseudo-table or vtab */
){
/* Find the memory cell that will be used to store the blob of memory
@@ -60475,7 +64777,7 @@
**
** This macro added to every instruction that does a jump in order to
** implement a loop. This test used to be on every single instruction,
-** but that meant we more testing that we needed. By only testing the
+** but that meant we more testing than we needed. By only testing the
** flag on jump instructions, we get a (small) speed improvement.
*/
#define CHECK_FOR_INTERRUPT \
@@ -60555,7 +64857,7 @@
Op *pOp; /* Current operation */
int rc = SQLITE_OK; /* Value to return */
sqlite3 *db = p->db; /* The database */
- u8 resetSchemaOnFault = 0; /* Reset schema after an error if true */
+ u8 resetSchemaOnFault = 0; /* Reset schema after an error if positive */
u8 encoding = ENC(db); /* The database encoding */
#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
int checkProgress; /* True if progress callbacks are enabled */
@@ -60568,6 +64870,7 @@
Mem *pOut = 0; /* Output operand */
int iCompare = 0; /* Result of last OP_Compare operation */
int *aPermute = 0; /* Permutation of columns for OP_Compare */
+ i64 lastRowid = db->lastRowid; /* Saved value of the last insert ROWID */
#ifdef VDBE_PROFILE
u64 start; /* CPU clock count at start of opcode */
int origPc; /* Program counter at start of opcode */
@@ -60584,46 +64887,51 @@
struct OP_Yield_stack_vars {
int pcDest;
} aa;
+ struct OP_Null_stack_vars {
+ int cnt;
+ } ab;
struct OP_Variable_stack_vars {
Mem *pVar; /* Value being transferred */
- } ab;
+ } ac;
struct OP_Move_stack_vars {
char *zMalloc; /* Holding variable for allocated memory */
int n; /* Number of registers left to copy */
int p1; /* Register to copy from */
int p2; /* Register to copy to */
- } ac;
+ } ad;
struct OP_ResultRow_stack_vars {
Mem *pMem;
int i;
- } ad;
+ } ae;
struct OP_Concat_stack_vars {
i64 nByte;
- } ae;
+ } af;
struct OP_Remainder_stack_vars {
int flags; /* Combined MEM_* flags from both inputs */
i64 iA; /* Integer value of left operand */
i64 iB; /* Integer value of right operand */
double rA; /* Real value of left operand */
double rB; /* Real value of right operand */
- } af;
+ } ag;
struct OP_Function_stack_vars {
int i;
Mem *pArg;
sqlite3_context ctx;
sqlite3_value **apVal;
int n;
- } ag;
- struct OP_ShiftRight_stack_vars {
- i64 a;
- i64 b;
} ah;
+ struct OP_ShiftRight_stack_vars {
+ i64 iA;
+ u64 uA;
+ i64 iB;
+ u8 op;
+ } ai;
struct OP_Ge_stack_vars {
int res; /* Result of the comparison of pIn1 against pIn3 */
char affinity; /* Affinity to use for comparison */
u16 flags1; /* Copy of initial value of pIn1->flags */
u16 flags3; /* Copy of initial value of pIn3->flags */
- } ai;
+ } aj;
struct OP_Compare_stack_vars {
int n;
int i;
@@ -60633,14 +64941,14 @@
int idx;
CollSeq *pColl; /* Collating sequence to use on this term */
int bRev; /* True for DESCENDING sort order */
- } aj;
+ } ak;
struct OP_Or_stack_vars {
int v1; /* Left operand: 0==FALSE, 1==TRUE, 2==UNKNOWN or NULL */
int v2; /* Right operand: 0==FALSE, 1==TRUE, 2==UNKNOWN or NULL */
- } ak;
+ } al;
struct OP_IfNot_stack_vars {
int c;
- } al;
+ } am;
struct OP_Column_stack_vars {
u32 payloadSize; /* Number of bytes in the record */
i64 payloadSize64; /* Number of bytes in the record */
@@ -60663,12 +64971,13 @@
u32 szField; /* Number of bytes in the content of a field */
int szHdr; /* Size of the header size field at start of record */
int avail; /* Number of bytes of available data */
+ u32 t; /* A type code from the record header */
Mem *pReg; /* PseudoTable input register */
- } am;
+ } an;
struct OP_Affinity_stack_vars {
const char *zAffinity; /* The affinity to be applied */
char cAff; /* A single character of affinity */
- } an;
+ } ao;
struct OP_MakeRecord_stack_vars {
u8 *zNewRecord; /* A buffer to hold the data for the new record */
Mem *pRec; /* The new record */
@@ -60685,11 +64994,11 @@
int file_format; /* File format to use for encoding */
int i; /* Space used in zNewRecord[] */
int len; /* Length of a field */
- } ao;
+ } ap;
struct OP_Count_stack_vars {
i64 nEntry;
BtCursor *pCrsr;
- } ap;
+ } aq;
struct OP_Savepoint_stack_vars {
int p1; /* Value of P1 operand */
char *zName; /* Name of savepoint */
@@ -60699,27 +65008,28 @@
Savepoint *pTmp;
int iSavepoint;
int ii;
- } aq;
+ } ar;
struct OP_AutoCommit_stack_vars {
int desiredAutoCommit;
int iRollback;
int turnOnAC;
- } ar;
+ } as;
struct OP_Transaction_stack_vars {
Btree *pBt;
- } as;
+ } at;
struct OP_ReadCookie_stack_vars {
int iMeta;
int iDb;
int iCookie;
- } at;
+ } au;
struct OP_SetCookie_stack_vars {
Db *pDb;
- } au;
+ } av;
struct OP_VerifyCookie_stack_vars {
int iMeta;
+ int iGen;
Btree *pBt;
- } av;
+ } aw;
struct OP_OpenWrite_stack_vars {
int nField;
KeyInfo *pKeyInfo;
@@ -60729,13 +65039,16 @@
Btree *pX;
VdbeCursor *pCur;
Db *pDb;
- } aw;
+ } ax;
struct OP_OpenEphemeral_stack_vars {
VdbeCursor *pCx;
- } ax;
+ } ay;
+ struct OP_SorterOpen_stack_vars {
+ VdbeCursor *pCx;
+ } az;
struct OP_OpenPseudo_stack_vars {
VdbeCursor *pCx;
- } ay;
+ } ba;
struct OP_SeekGt_stack_vars {
int res;
int oc;
@@ -60743,18 +65056,19 @@
UnpackedRecord r;
int nField;
i64 iKey; /* The rowid we are to seek to */
- } az;
+ } bb;
struct OP_Seek_stack_vars {
VdbeCursor *pC;
- } ba;
+ } bc;
struct OP_Found_stack_vars {
int alreadyExists;
VdbeCursor *pC;
int res;
+ char *pFree;
UnpackedRecord *pIdxKey;
UnpackedRecord r;
char aTempRec[ROUND8(sizeof(UnpackedRecord)) + sizeof(Mem)*3 + 7];
- } bb;
+ } bd;
struct OP_IsUnique_stack_vars {
u16 ii;
VdbeCursor *pCx;
@@ -60763,13 +65077,13 @@
Mem *aMx;
UnpackedRecord r; /* B-Tree index search key */
i64 R; /* Rowid stored in register P3 */
- } bc;
+ } be;
struct OP_NotExists_stack_vars {
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
u64 iKey;
- } bd;
+ } bf;
struct OP_NewRowid_stack_vars {
i64 v; /* The new rowid */
VdbeCursor *pC; /* Cursor of table to get the new rowid */
@@ -60777,7 +65091,7 @@
int cnt; /* Counter to limit the number of searches */
Mem *pMem; /* Register holding largest rowid for AUTOINCREMENT */
VdbeFrame *pFrame; /* Root frame of VDBE */
- } be;
+ } bg;
struct OP_InsertInt_stack_vars {
Mem *pData; /* MEM cell holding data for the record to be inserted */
Mem *pKey; /* MEM cell holding key for the record */
@@ -60788,83 +65102,89 @@
const char *zDb; /* database name - used by the update hook */
const char *zTbl; /* Table name - used by the opdate hook */
int op; /* Opcode for update hook: SQLITE_UPDATE or SQLITE_INSERT */
- } bf;
+ } bh;
struct OP_Delete_stack_vars {
i64 iKey;
VdbeCursor *pC;
- } bg;
+ } bi;
+ struct OP_SorterCompare_stack_vars {
+ VdbeCursor *pC;
+ int res;
+ } bj;
+ struct OP_SorterData_stack_vars {
+ VdbeCursor *pC;
+ } bk;
struct OP_RowData_stack_vars {
VdbeCursor *pC;
BtCursor *pCrsr;
u32 n;
i64 n64;
- } bh;
+ } bl;
struct OP_Rowid_stack_vars {
VdbeCursor *pC;
i64 v;
sqlite3_vtab *pVtab;
const sqlite3_module *pModule;
- } bi;
+ } bm;
struct OP_NullRow_stack_vars {
VdbeCursor *pC;
- } bj;
+ } bn;
struct OP_Last_stack_vars {
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
- } bk;
+ } bo;
struct OP_Rewind_stack_vars {
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
- } bl;
+ } bp;
struct OP_Next_stack_vars {
VdbeCursor *pC;
- BtCursor *pCrsr;
int res;
- } bm;
+ } bq;
struct OP_IdxInsert_stack_vars {
VdbeCursor *pC;
BtCursor *pCrsr;
int nKey;
const char *zKey;
- } bn;
+ } br;
struct OP_IdxDelete_stack_vars {
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
UnpackedRecord r;
- } bo;
+ } bs;
struct OP_IdxRowid_stack_vars {
BtCursor *pCrsr;
VdbeCursor *pC;
i64 rowid;
- } bp;
+ } bt;
struct OP_IdxGE_stack_vars {
VdbeCursor *pC;
int res;
UnpackedRecord r;
- } bq;
+ } bu;
struct OP_Destroy_stack_vars {
int iMoved;
int iCnt;
Vdbe *pVdbe;
int iDb;
- } br;
+ } bv;
struct OP_Clear_stack_vars {
int nChange;
- } bs;
+ } bw;
struct OP_CreateTable_stack_vars {
int pgno;
int flags;
Db *pDb;
- } bt;
+ } bx;
struct OP_ParseSchema_stack_vars {
int iDb;
const char *zMaster;
char *zSql;
InitData initData;
- } bu;
+ } by;
struct OP_IntegrityCk_stack_vars {
int nRoot; /* Number of tables to check. (Number of root pages.) */
int *aRoot; /* Array of rootpage numbers for tables to be checked */
@@ -60872,14 +65192,14 @@
int nErr; /* Number of errors reported */
char *z; /* Text of the error report */
Mem *pnErr; /* Register keeping track of errors remaining */
- } bv;
+ } bz;
struct OP_RowSetRead_stack_vars {
i64 val;
- } bw;
+ } ca;
struct OP_RowSetTest_stack_vars {
int iSet;
int exists;
- } bx;
+ } cb;
struct OP_Program_stack_vars {
int nMem; /* Number of memory registers for sub-program */
int nByte; /* Bytes of runtime space required for sub-program */
@@ -60889,15 +65209,15 @@
VdbeFrame *pFrame; /* New vdbe frame to execute in */
SubProgram *pProgram; /* Sub-program to execute */
void *t; /* Token identifying trigger */
- } by;
+ } cc;
struct OP_Param_stack_vars {
VdbeFrame *pFrame;
Mem *pIn;
- } bz;
+ } cd;
struct OP_MemMax_stack_vars {
Mem *pIn1;
VdbeFrame *pFrame;
- } ca;
+ } ce;
struct OP_AggStep_stack_vars {
int n;
int i;
@@ -60905,29 +65225,34 @@
Mem *pRec;
sqlite3_context ctx;
sqlite3_value **apVal;
- } cb;
+ } cf;
struct OP_AggFinal_stack_vars {
Mem *pMem;
- } cc;
+ } cg;
+ struct OP_Checkpoint_stack_vars {
+ int i; /* Loop counter */
+ int aRes[3]; /* Results */
+ Mem *pMem; /* Write results here */
+ } ch;
struct OP_JournalMode_stack_vars {
Btree *pBt; /* Btree to change journal mode of */
Pager *pPager; /* Pager associated with pBt */
int eNew; /* New journal mode */
int eOld; /* The old journal mode */
const char *zFilename; /* Name of database file for pPager */
- } cd;
+ } ci;
struct OP_IncrVacuum_stack_vars {
Btree *pBt;
- } ce;
+ } cj;
struct OP_VBegin_stack_vars {
VTable *pVTab;
- } cf;
+ } ck;
struct OP_VOpen_stack_vars {
VdbeCursor *pCur;
sqlite3_vtab_cursor *pVtabCursor;
sqlite3_vtab *pVtab;
sqlite3_module *pModule;
- } cg;
+ } cl;
struct OP_VFilter_stack_vars {
int nArg;
int iQuery;
@@ -60940,23 +65265,23 @@
int res;
int i;
Mem **apArg;
- } ch;
+ } cm;
struct OP_VColumn_stack_vars {
sqlite3_vtab *pVtab;
const sqlite3_module *pModule;
Mem *pDest;
sqlite3_context sContext;
- } ci;
+ } cn;
struct OP_VNext_stack_vars {
sqlite3_vtab *pVtab;
const sqlite3_module *pModule;
int res;
VdbeCursor *pCur;
- } cj;
+ } co;
struct OP_VRename_stack_vars {
sqlite3_vtab *pVtab;
Mem *pName;
- } ck;
+ } cp;
struct OP_VUpdate_stack_vars {
sqlite3_vtab *pVtab;
sqlite3_module *pModule;
@@ -60965,16 +65290,17 @@
sqlite_int64 rowid;
Mem **apArg;
Mem *pX;
- } cl;
+ } cq;
struct OP_Trace_stack_vars {
char *zTrace;
- } cm;
+ char *z;
+ } cr;
} u;
/* End automatically generated code
********************************************************************/
assert( p->magic==VDBE_MAGIC_RUN ); /* sqlite3_step() verifies this */
- sqlite3VdbeMutexArrayEnter(p);
+ sqlite3VdbeEnter(p);
if( p->rc==SQLITE_NOMEM ){
/* This happens if a malloc() inside a call to sqlite3_column_text() or
** sqlite3_column_text16() failed. */
@@ -61068,7 +65394,7 @@
assert( pOp->p2<=p->nMem );
pOut = &aMem[pOp->p2];
memAboutToChange(p, pOut);
- sqlite3VdbeMemReleaseExternal(pOut);
+ VdbeMemRelease(pOut);
pOut->flags = MEM_Int;
}
@@ -61159,7 +65485,8 @@
** Write the current address onto register P1
** and then jump to address P2.
*/
-case OP_Gosub: { /* jump, in1 */
+case OP_Gosub: { /* jump */
+ assert( pOp->p1>0 && pOp->p1<=p->nMem );
pIn1 = &aMem[pOp->p1];
assert( (pIn1->flags & MEM_Dyn)==0 );
memAboutToChange(p, pIn1);
@@ -61201,7 +65528,7 @@
/* Opcode: HaltIfNull P1 P2 P3 P4 *
**
-** Check the value in register P3. If is is NULL then Halt using
+** Check the value in register P3. If it is NULL then Halt using
** parameter P1, P2, and P4 as if this were a Halt instruction. If the
** value in register P3 is not NULL, then this routine is a no-op.
*/
@@ -61238,6 +65565,7 @@
p->nFrame--;
sqlite3VdbeSetChanges(db, p->nChange);
pc = sqlite3VdbeFrameRestore(pFrame);
+ lastRowid = db->lastRowid;
if( pOp->p2==OE_Ignore ){
/* Instruction pc is the OP_Program that invoked the sub-program
** currently being halted. If the p2 instruction of this OP_Halt
@@ -61357,12 +65685,27 @@
break;
}
-/* Opcode: Null * P2 * * *
+/* Opcode: Null * P2 P3 * *
**
-** Write a NULL into register P2.
+** Write a NULL into registers P2. If P3 greater than P2, then also write
+** NULL into register P3 and ever register in between P2 and P3. If P3
+** is less than P2 (typically P3 is zero) then only register P2 is
+** set to NULL
*/
case OP_Null: { /* out2-prerelease */
+#if 0 /* local variables moved into u.ab */
+ int cnt;
+#endif /* local variables moved into u.ab */
+ u.ab.cnt = pOp->p3-pOp->p2;
+ assert( pOp->p3<=p->nMem );
pOut->flags = MEM_Null;
+ while( u.ab.cnt>0 ){
+ pOut++;
+ memAboutToChange(p, pOut);
+ VdbeMemRelease(pOut);
+ pOut->flags = MEM_Null;
+ u.ab.cnt--;
+ }
break;
}
@@ -61388,16 +65731,17 @@
** The P4 value is used by sqlite3_bind_parameter_name().
*/
case OP_Variable: { /* out2-prerelease */
-#if 0 /* local variables moved into u.ab */
+#if 0 /* local variables moved into u.ac */
Mem *pVar; /* Value being transferred */
-#endif /* local variables moved into u.ab */
+#endif /* local variables moved into u.ac */
assert( pOp->p1>0 && pOp->p1<=p->nVar );
- u.ab.pVar = &p->aVar[pOp->p1 - 1];
- if( sqlite3VdbeMemTooBig(u.ab.pVar) ){
+ assert( pOp->p4.z==0 || pOp->p4.z==p->azVar[pOp->p1-1] );
+ u.ac.pVar = &p->aVar[pOp->p1 - 1];
+ if( sqlite3VdbeMemTooBig(u.ac.pVar) ){
goto too_big;
}
- sqlite3VdbeMemShallowCopy(pOut, u.ab.pVar, MEM_Static);
+ sqlite3VdbeMemShallowCopy(pOut, u.ac.pVar, MEM_Static);
UPDATE_MAX_BLOBSIZE(pOut);
break;
}
@@ -61410,31 +65754,36 @@
** P1..P1+P3-1 and P2..P2+P3-1 to overlap.
*/
case OP_Move: {
-#if 0 /* local variables moved into u.ac */
+#if 0 /* local variables moved into u.ad */
char *zMalloc; /* Holding variable for allocated memory */
int n; /* Number of registers left to copy */
int p1; /* Register to copy from */
int p2; /* Register to copy to */
-#endif /* local variables moved into u.ac */
+#endif /* local variables moved into u.ad */
- u.ac.n = pOp->p3;
- u.ac.p1 = pOp->p1;
- u.ac.p2 = pOp->p2;
- assert( u.ac.n>0 && u.ac.p1>0 && u.ac.p2>0 );
- assert( u.ac.p1+u.ac.n<=u.ac.p2 || u.ac.p2+u.ac.n<=u.ac.p1 );
+ u.ad.n = pOp->p3;
+ u.ad.p1 = pOp->p1;
+ u.ad.p2 = pOp->p2;
+ assert( u.ad.n>0 && u.ad.p1>0 && u.ad.p2>0 );
+ assert( u.ad.p1+u.ad.n<=u.ad.p2 || u.ad.p2+u.ad.n<=u.ad.p1 );
- pIn1 = &aMem[u.ac.p1];
- pOut = &aMem[u.ac.p2];
- while( u.ac.n-- ){
+ pIn1 = &aMem[u.ad.p1];
+ pOut = &aMem[u.ad.p2];
+ while( u.ad.n-- ){
assert( pOut<=&aMem[p->nMem] );
assert( pIn1<=&aMem[p->nMem] );
assert( memIsValid(pIn1) );
memAboutToChange(p, pOut);
- u.ac.zMalloc = pOut->zMalloc;
+ u.ad.zMalloc = pOut->zMalloc;
pOut->zMalloc = 0;
sqlite3VdbeMemMove(pOut, pIn1);
- pIn1->zMalloc = u.ac.zMalloc;
- REGISTER_TRACE(u.ac.p2++, pOut);
+#ifdef SQLITE_DEBUG
+ if( pOut->pScopyFrom>=&aMem[u.ad.p1] && pOut->pScopyFrom<&aMem[u.ad.p1+pOp->p3] ){
+ pOut->pScopyFrom += u.ad.p1 - pOp->p2;
+ }
+#endif
+ pIn1->zMalloc = u.ad.zMalloc;
+ REGISTER_TRACE(u.ad.p2++, pOut);
pIn1++;
pOut++;
}
@@ -61491,10 +65840,10 @@
** row.
*/
case OP_ResultRow: {
-#if 0 /* local variables moved into u.ad */
+#if 0 /* local variables moved into u.ae */
Mem *pMem;
int i;
-#endif /* local variables moved into u.ad */
+#endif /* local variables moved into u.ae */
assert( p->nResColumn==pOp->p2 );
assert( pOp->p1>0 );
assert( pOp->p1+pOp->p2<=p->nMem+1 );
@@ -61534,17 +65883,17 @@
/* Make sure the results of the current row are \000 terminated
** and have an assigned type. The results are de-ephemeralized as
- ** as side effect.
+ ** a side effect.
*/
- u.ad.pMem = p->pResultSet = &aMem[pOp->p1];
- for(u.ad.i=0; u.ad.i<pOp->p2; u.ad.i++){
- assert( memIsValid(&u.ad.pMem[u.ad.i]) );
- Deephemeralize(&u.ad.pMem[u.ad.i]);
- assert( (u.ad.pMem[u.ad.i].flags & MEM_Ephem)==0
- || (u.ad.pMem[u.ad.i].flags & (MEM_Str|MEM_Blob))==0 );
- sqlite3VdbeMemNulTerminate(&u.ad.pMem[u.ad.i]);
- sqlite3VdbeMemStoreType(&u.ad.pMem[u.ad.i]);
- REGISTER_TRACE(pOp->p1+u.ad.i, &u.ad.pMem[u.ad.i]);
+ u.ae.pMem = p->pResultSet = &aMem[pOp->p1];
+ for(u.ae.i=0; u.ae.i<pOp->p2; u.ae.i++){
+ assert( memIsValid(&u.ae.pMem[u.ae.i]) );
+ Deephemeralize(&u.ae.pMem[u.ae.i]);
+ assert( (u.ae.pMem[u.ae.i].flags & MEM_Ephem)==0
+ || (u.ae.pMem[u.ae.i].flags & (MEM_Str|MEM_Blob))==0 );
+ sqlite3VdbeMemNulTerminate(&u.ae.pMem[u.ae.i]);
+ sqlite3VdbeMemStoreType(&u.ae.pMem[u.ae.i]);
+ REGISTER_TRACE(pOp->p1+u.ae.i, &u.ae.pMem[u.ae.i]);
}
if( db->mallocFailed ) goto no_mem;
@@ -61568,9 +65917,9 @@
** to avoid a memcpy().
*/
case OP_Concat: { /* same as TK_CONCAT, in1, in2, out3 */
-#if 0 /* local variables moved into u.ae */
+#if 0 /* local variables moved into u.af */
i64 nByte;
-#endif /* local variables moved into u.ae */
+#endif /* local variables moved into u.af */
pIn1 = &aMem[pOp->p1];
pIn2 = &aMem[pOp->p2];
@@ -61583,22 +65932,22 @@
if( ExpandBlob(pIn1) || ExpandBlob(pIn2) ) goto no_mem;
Stringify(pIn1, encoding);
Stringify(pIn2, encoding);
- u.ae.nByte = pIn1->n + pIn2->n;
- if( u.ae.nByte>db->aLimit[SQLITE_LIMIT_LENGTH] ){
+ u.af.nByte = pIn1->n + pIn2->n;
+ if( u.af.nByte>db->aLimit[SQLITE_LIMIT_LENGTH] ){
goto too_big;
}
MemSetTypeFlag(pOut, MEM_Str);
- if( sqlite3VdbeMemGrow(pOut, (int)u.ae.nByte+2, pOut==pIn2) ){
+ if( sqlite3VdbeMemGrow(pOut, (int)u.af.nByte+2, pOut==pIn2) ){
goto no_mem;
}
if( pOut!=pIn2 ){
memcpy(pOut->z, pIn2->z, pIn2->n);
}
memcpy(&pOut->z[pIn2->n], pIn1->z, pIn1->n);
- pOut->z[u.ae.nByte] = 0;
- pOut->z[u.ae.nByte+1] = 0;
+ pOut->z[u.af.nByte] = 0;
+ pOut->z[u.af.nByte+1] = 0;
pOut->flags |= MEM_Term;
- pOut->n = (int)u.ae.nByte;
+ pOut->n = (int)u.af.nByte;
pOut->enc = encoding;
UPDATE_MAX_BLOBSIZE(pOut);
break;
@@ -61642,82 +65991,76 @@
case OP_Multiply: /* same as TK_STAR, in1, in2, out3 */
case OP_Divide: /* same as TK_SLASH, in1, in2, out3 */
case OP_Remainder: { /* same as TK_REM, in1, in2, out3 */
-#if 0 /* local variables moved into u.af */
+#if 0 /* local variables moved into u.ag */
int flags; /* Combined MEM_* flags from both inputs */
i64 iA; /* Integer value of left operand */
i64 iB; /* Integer value of right operand */
double rA; /* Real value of left operand */
double rB; /* Real value of right operand */
-#endif /* local variables moved into u.af */
+#endif /* local variables moved into u.ag */
pIn1 = &aMem[pOp->p1];
applyNumericAffinity(pIn1);
pIn2 = &aMem[pOp->p2];
applyNumericAffinity(pIn2);
pOut = &aMem[pOp->p3];
- u.af.flags = pIn1->flags | pIn2->flags;
- if( (u.af.flags & MEM_Null)!=0 ) goto arithmetic_result_is_null;
+ u.ag.flags = pIn1->flags | pIn2->flags;
+ if( (u.ag.flags & MEM_Null)!=0 ) goto arithmetic_result_is_null;
if( (pIn1->flags & pIn2->flags & MEM_Int)==MEM_Int ){
- u.af.iA = pIn1->u.i;
- u.af.iB = pIn2->u.i;
+ u.ag.iA = pIn1->u.i;
+ u.ag.iB = pIn2->u.i;
switch( pOp->opcode ){
- case OP_Add: u.af.iB += u.af.iA; break;
- case OP_Subtract: u.af.iB -= u.af.iA; break;
- case OP_Multiply: u.af.iB *= u.af.iA; break;
+ case OP_Add: if( sqlite3AddInt64(&u.ag.iB,u.ag.iA) ) goto fp_math; break;
+ case OP_Subtract: if( sqlite3SubInt64(&u.ag.iB,u.ag.iA) ) goto fp_math; break;
+ case OP_Multiply: if( sqlite3MulInt64(&u.ag.iB,u.ag.iA) ) goto fp_math; break;
case OP_Divide: {
- if( u.af.iA==0 ) goto arithmetic_result_is_null;
- /* Dividing the largest possible negative 64-bit integer (1<<63) by
- ** -1 returns an integer too large to store in a 64-bit data-type. On
- ** some architectures, the value overflows to (1<<63). On others,
- ** a SIGFPE is issued. The following statement normalizes this
- ** behavior so that all architectures behave as if integer
- ** overflow occurred.
- */
- if( u.af.iA==-1 && u.af.iB==SMALLEST_INT64 ) u.af.iA = 1;
- u.af.iB /= u.af.iA;
+ if( u.ag.iA==0 ) goto arithmetic_result_is_null;
+ if( u.ag.iA==-1 && u.ag.iB==SMALLEST_INT64 ) goto fp_math;
+ u.ag.iB /= u.ag.iA;
break;
}
default: {
- if( u.af.iA==0 ) goto arithmetic_result_is_null;
- if( u.af.iA==-1 ) u.af.iA = 1;
- u.af.iB %= u.af.iA;
+ if( u.ag.iA==0 ) goto arithmetic_result_is_null;
+ if( u.ag.iA==-1 ) u.ag.iA = 1;
+ u.ag.iB %= u.ag.iA;
break;
}
}
- pOut->u.i = u.af.iB;
+ pOut->u.i = u.ag.iB;
MemSetTypeFlag(pOut, MEM_Int);
}else{
- u.af.rA = sqlite3VdbeRealValue(pIn1);
- u.af.rB = sqlite3VdbeRealValue(pIn2);
+fp_math:
+ u.ag.rA = sqlite3VdbeRealValue(pIn1);
+ u.ag.rB = sqlite3VdbeRealValue(pIn2);
switch( pOp->opcode ){
- case OP_Add: u.af.rB += u.af.rA; break;
- case OP_Subtract: u.af.rB -= u.af.rA; break;
- case OP_Multiply: u.af.rB *= u.af.rA; break;
+ case OP_Add: u.ag.rB += u.ag.rA; break;
+ case OP_Subtract: u.ag.rB -= u.ag.rA; break;
+ case OP_Multiply: u.ag.rB *= u.ag.rA; break;
case OP_Divide: {
/* (double)0 In case of SQLITE_OMIT_FLOATING_POINT... */
- if( u.af.rA==(double)0 ) goto arithmetic_result_is_null;
- u.af.rB /= u.af.rA;
+ if( u.ag.rA==(double)0 ) goto arithmetic_result_is_null;
+ u.ag.rB /= u.ag.rA;
break;
}
default: {
- u.af.iA = (i64)u.af.rA;
- u.af.iB = (i64)u.af.rB;
- if( u.af.iA==0 ) goto arithmetic_result_is_null;
- if( u.af.iA==-1 ) u.af.iA = 1;
- u.af.rB = (double)(u.af.iB % u.af.iA);
+ u.ag.iA = (i64)u.ag.rA;
+ u.ag.iB = (i64)u.ag.rB;
+ if( u.ag.iA==0 ) goto arithmetic_result_is_null;
+ if( u.ag.iA==-1 ) u.ag.iA = 1;
+ u.ag.rB = (double)(u.ag.iB % u.ag.iA);
break;
}
}
#ifdef SQLITE_OMIT_FLOATING_POINT
- pOut->u.i = u.af.rB;
+ pOut->u.i = u.ag.rB;
MemSetTypeFlag(pOut, MEM_Int);
#else
- if( sqlite3IsNaN(u.af.rB) ){
+ if( sqlite3IsNaN(u.ag.rB) ){
goto arithmetic_result_is_null;
}
- pOut->r = u.af.rB;
+ pOut->r = u.ag.rB;
MemSetTypeFlag(pOut, MEM_Real);
- if( (u.af.flags & MEM_Real)==0 ){
+ if( (u.ag.flags & MEM_Real)==0 ){
sqlite3VdbeIntegerAffinity(pOut);
}
#endif
@@ -61762,92 +66105,104 @@
** See also: AggStep and AggFinal
*/
case OP_Function: {
-#if 0 /* local variables moved into u.ag */
+#if 0 /* local variables moved into u.ah */
int i;
Mem *pArg;
sqlite3_context ctx;
sqlite3_value **apVal;
int n;
-#endif /* local variables moved into u.ag */
+#endif /* local variables moved into u.ah */
- u.ag.n = pOp->p5;
- u.ag.apVal = p->apArg;
- assert( u.ag.apVal || u.ag.n==0 );
+ u.ah.n = pOp->p5;
+ u.ah.apVal = p->apArg;
+ assert( u.ah.apVal || u.ah.n==0 );
assert( pOp->p3>0 && pOp->p3<=p->nMem );
pOut = &aMem[pOp->p3];
memAboutToChange(p, pOut);
- assert( u.ag.n==0 || (pOp->p2>0 && pOp->p2+u.ag.n<=p->nMem+1) );
- assert( pOp->p3<pOp->p2 || pOp->p3>=pOp->p2+u.ag.n );
- u.ag.pArg = &aMem[pOp->p2];
- for(u.ag.i=0; u.ag.i<u.ag.n; u.ag.i++, u.ag.pArg++){
- assert( memIsValid(u.ag.pArg) );
- u.ag.apVal[u.ag.i] = u.ag.pArg;
- Deephemeralize(u.ag.pArg);
- sqlite3VdbeMemStoreType(u.ag.pArg);
- REGISTER_TRACE(pOp->p2+u.ag.i, u.ag.pArg);
+ assert( u.ah.n==0 || (pOp->p2>0 && pOp->p2+u.ah.n<=p->nMem+1) );
+ assert( pOp->p3<pOp->p2 || pOp->p3>=pOp->p2+u.ah.n );
+ u.ah.pArg = &aMem[pOp->p2];
+ for(u.ah.i=0; u.ah.i<u.ah.n; u.ah.i++, u.ah.pArg++){
+ assert( memIsValid(u.ah.pArg) );
+ u.ah.apVal[u.ah.i] = u.ah.pArg;
+ Deephemeralize(u.ah.pArg);
+ sqlite3VdbeMemStoreType(u.ah.pArg);
+ REGISTER_TRACE(pOp->p2+u.ah.i, u.ah.pArg);
}
assert( pOp->p4type==P4_FUNCDEF || pOp->p4type==P4_VDBEFUNC );
if( pOp->p4type==P4_FUNCDEF ){
- u.ag.ctx.pFunc = pOp->p4.pFunc;
- u.ag.ctx.pVdbeFunc = 0;
+ u.ah.ctx.pFunc = pOp->p4.pFunc;
+ u.ah.ctx.pVdbeFunc = 0;
}else{
- u.ag.ctx.pVdbeFunc = (VdbeFunc*)pOp->p4.pVdbeFunc;
- u.ag.ctx.pFunc = u.ag.ctx.pVdbeFunc->pFunc;
+ u.ah.ctx.pVdbeFunc = (VdbeFunc*)pOp->p4.pVdbeFunc;
+ u.ah.ctx.pFunc = u.ah.ctx.pVdbeFunc->pFunc;
}
- u.ag.ctx.s.flags = MEM_Null;
- u.ag.ctx.s.db = db;
- u.ag.ctx.s.xDel = 0;
- u.ag.ctx.s.zMalloc = 0;
+ u.ah.ctx.s.flags = MEM_Null;
+ u.ah.ctx.s.db = db;
+ u.ah.ctx.s.xDel = 0;
+ u.ah.ctx.s.zMalloc = 0;
/* The output cell may already have a buffer allocated. Move
- ** the pointer to u.ag.ctx.s so in case the user-function can use
+ ** the pointer to u.ah.ctx.s so in case the user-function can use
** the already allocated buffer instead of allocating a new one.
*/
- sqlite3VdbeMemMove(&u.ag.ctx.s, pOut);
- MemSetTypeFlag(&u.ag.ctx.s, MEM_Null);
+ sqlite3VdbeMemMove(&u.ah.ctx.s, pOut);
+ MemSetTypeFlag(&u.ah.ctx.s, MEM_Null);
- u.ag.ctx.isError = 0;
- if( u.ag.ctx.pFunc->flags & SQLITE_FUNC_NEEDCOLL ){
+ u.ah.ctx.isError = 0;
+ if( u.ah.ctx.pFunc->flags & SQLITE_FUNC_NEEDCOLL ){
assert( pOp>aOp );
assert( pOp[-1].p4type==P4_COLLSEQ );
assert( pOp[-1].opcode==OP_CollSeq );
- u.ag.ctx.pColl = pOp[-1].p4.pColl;
+ u.ah.ctx.pColl = pOp[-1].p4.pColl;
}
- (*u.ag.ctx.pFunc->xFunc)(&u.ag.ctx, u.ag.n, u.ag.apVal); /* IMP: R-24505-23230 */
+ db->lastRowid = lastRowid;
+ (*u.ah.ctx.pFunc->xFunc)(&u.ah.ctx, u.ah.n, u.ah.apVal); /* IMP: R-24505-23230 */
+ lastRowid = db->lastRowid;
+
+ /* If any auxiliary data functions have been called by this user function,
+ ** immediately call the destructor for any non-static values.
+ */
+ if( u.ah.ctx.pVdbeFunc ){
+ sqlite3VdbeDeleteAuxData(u.ah.ctx.pVdbeFunc, pOp->p1);
+ pOp->p4.pVdbeFunc = u.ah.ctx.pVdbeFunc;
+ pOp->p4type = P4_VDBEFUNC;
+ }
+
if( db->mallocFailed ){
/* Even though a malloc() has failed, the implementation of the
** user function may have called an sqlite3_result_XXX() function
** to return a value. The following call releases any resources
** associated with such a value.
*/
- sqlite3VdbeMemRelease(&u.ag.ctx.s);
+ sqlite3VdbeMemRelease(&u.ah.ctx.s);
goto no_mem;
}
- /* If any auxiliary data functions have been called by this user function,
- ** immediately call the destructor for any non-static values.
- */
- if( u.ag.ctx.pVdbeFunc ){
- sqlite3VdbeDeleteAuxData(u.ag.ctx.pVdbeFunc, pOp->p1);
- pOp->p4.pVdbeFunc = u.ag.ctx.pVdbeFunc;
- pOp->p4type = P4_VDBEFUNC;
- }
-
/* If the function returned an error, throw an exception */
- if( u.ag.ctx.isError ){
- sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(&u.ag.ctx.s));
- rc = u.ag.ctx.isError;
+ if( u.ah.ctx.isError ){
+ sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(&u.ah.ctx.s));
+ rc = u.ah.ctx.isError;
}
/* Copy the result of the function into register P3 */
- sqlite3VdbeChangeEncoding(&u.ag.ctx.s, encoding);
- sqlite3VdbeMemMove(pOut, &u.ag.ctx.s);
+ sqlite3VdbeChangeEncoding(&u.ah.ctx.s, encoding);
+ sqlite3VdbeMemMove(pOut, &u.ah.ctx.s);
if( sqlite3VdbeMemTooBig(pOut) ){
goto too_big;
}
+
+#if 0
+ /* The app-defined function has done something that as caused this
+ ** statement to expire. (Perhaps the function called sqlite3_exec()
+ ** with a CREATE TABLE statement.)
+ */
+ if( p->expired ) rc = SQLITE_ABORT;
+#endif
+
REGISTER_TRACE(pOp->p3, pOut);
UPDATE_MAX_BLOBSIZE(pOut);
break;
@@ -61883,10 +66238,12 @@
case OP_BitOr: /* same as TK_BITOR, in1, in2, out3 */
case OP_ShiftLeft: /* same as TK_LSHIFT, in1, in2, out3 */
case OP_ShiftRight: { /* same as TK_RSHIFT, in1, in2, out3 */
-#if 0 /* local variables moved into u.ah */
- i64 a;
- i64 b;
-#endif /* local variables moved into u.ah */
+#if 0 /* local variables moved into u.ai */
+ i64 iA;
+ u64 uA;
+ i64 iB;
+ u8 op;
+#endif /* local variables moved into u.ai */
pIn1 = &aMem[pOp->p1];
pIn2 = &aMem[pOp->p2];
@@ -61895,16 +66252,38 @@
sqlite3VdbeMemSetNull(pOut);
break;
}
- u.ah.a = sqlite3VdbeIntValue(pIn2);
- u.ah.b = sqlite3VdbeIntValue(pIn1);
- switch( pOp->opcode ){
- case OP_BitAnd: u.ah.a &= u.ah.b; break;
- case OP_BitOr: u.ah.a |= u.ah.b; break;
- case OP_ShiftLeft: u.ah.a <<= u.ah.b; break;
- default: assert( pOp->opcode==OP_ShiftRight );
- u.ah.a >>= u.ah.b; break;
+ u.ai.iA = sqlite3VdbeIntValue(pIn2);
+ u.ai.iB = sqlite3VdbeIntValue(pIn1);
+ u.ai.op = pOp->opcode;
+ if( u.ai.op==OP_BitAnd ){
+ u.ai.iA &= u.ai.iB;
+ }else if( u.ai.op==OP_BitOr ){
+ u.ai.iA |= u.ai.iB;
+ }else if( u.ai.iB!=0 ){
+ assert( u.ai.op==OP_ShiftRight || u.ai.op==OP_ShiftLeft );
+
+ /* If shifting by a negative amount, shift in the other direction */
+ if( u.ai.iB<0 ){
+ assert( OP_ShiftRight==OP_ShiftLeft+1 );
+ u.ai.op = 2*OP_ShiftLeft + 1 - u.ai.op;
+ u.ai.iB = u.ai.iB>(-64) ? -u.ai.iB : 64;
+ }
+
+ if( u.ai.iB>=64 ){
+ u.ai.iA = (u.ai.iA>=0 || u.ai.op==OP_ShiftLeft) ? 0 : -1;
+ }else{
+ memcpy(&u.ai.uA, &u.ai.iA, sizeof(u.ai.uA));
+ if( u.ai.op==OP_ShiftLeft ){
+ u.ai.uA <<= u.ai.iB;
+ }else{
+ u.ai.uA >>= u.ai.iB;
+ /* Sign-extend on a right shift of a negative number */
+ if( u.ai.iA<0 ) u.ai.uA |= ((((u64)0xffffffff)<<32)|0xffffffff) << (64-u.ai.iB);
+ }
+ memcpy(&u.ai.iA, &u.ai.uA, sizeof(u.ai.iA));
+ }
}
- pOut->u.i = u.ah.a;
+ pOut->u.i = u.ai.iA;
MemSetTypeFlag(pOut, MEM_Int);
break;
}
@@ -62106,7 +66485,7 @@
** If SQLITE_NULLEQ is set in P5 then the result of comparison is always either
** true or false and is never NULL. If both operands are NULL then the result
** of comparison is false. If either operand is NULL then the result is true.
-** If neither operand is NULL the the result is the same as it would be if
+** If neither operand is NULL the result is the same as it would be if
** the SQLITE_NULLEQ flag were omitted from P5.
*/
/* Opcode: Eq P1 P2 P3 P4 P5
@@ -62118,7 +66497,7 @@
** If SQLITE_NULLEQ is set in P5 then the result of comparison is always either
** true or false and is never NULL. If both operands are NULL then the result
** of comparison is true. If either operand is NULL then the result is false.
-** If neither operand is NULL the the result is the same as it would be if
+** If neither operand is NULL the result is the same as it would be if
** the SQLITE_NULLEQ flag were omitted from P5.
*/
/* Opcode: Le P1 P2 P3 P4 P5
@@ -62145,18 +66524,18 @@
case OP_Le: /* same as TK_LE, jump, in1, in3 */
case OP_Gt: /* same as TK_GT, jump, in1, in3 */
case OP_Ge: { /* same as TK_GE, jump, in1, in3 */
-#if 0 /* local variables moved into u.ai */
+#if 0 /* local variables moved into u.aj */
int res; /* Result of the comparison of pIn1 against pIn3 */
char affinity; /* Affinity to use for comparison */
u16 flags1; /* Copy of initial value of pIn1->flags */
u16 flags3; /* Copy of initial value of pIn3->flags */
-#endif /* local variables moved into u.ai */
+#endif /* local variables moved into u.aj */
pIn1 = &aMem[pOp->p1];
pIn3 = &aMem[pOp->p3];
- u.ai.flags1 = pIn1->flags;
- u.ai.flags3 = pIn3->flags;
- if( (pIn1->flags | pIn3->flags)&MEM_Null ){
+ u.aj.flags1 = pIn1->flags;
+ u.aj.flags3 = pIn3->flags;
+ if( (u.aj.flags1 | u.aj.flags3)&MEM_Null ){
/* One or both operands are NULL */
if( pOp->p5 & SQLITE_NULLEQ ){
/* If SQLITE_NULLEQ is set (which will only happen if the operator is
@@ -62164,7 +66543,7 @@
** or not both operands are null.
*/
assert( pOp->opcode==OP_Eq || pOp->opcode==OP_Ne );
- u.ai.res = (pIn1->flags & pIn3->flags & MEM_Null)==0;
+ u.aj.res = (u.aj.flags1 & u.aj.flags3 & MEM_Null)==0;
}else{
/* SQLITE_NULLEQ is clear and at least one operand is NULL,
** then the result is always NULL.
@@ -62181,40 +66560,40 @@
}
}else{
/* Neither operand is NULL. Do a comparison. */
- u.ai.affinity = pOp->p5 & SQLITE_AFF_MASK;
- if( u.ai.affinity ){
- applyAffinity(pIn1, u.ai.affinity, encoding);
- applyAffinity(pIn3, u.ai.affinity, encoding);
+ u.aj.affinity = pOp->p5 & SQLITE_AFF_MASK;
+ if( u.aj.affinity ){
+ applyAffinity(pIn1, u.aj.affinity, encoding);
+ applyAffinity(pIn3, u.aj.affinity, encoding);
if( db->mallocFailed ) goto no_mem;
}
assert( pOp->p4type==P4_COLLSEQ || pOp->p4.pColl==0 );
ExpandBlob(pIn1);
ExpandBlob(pIn3);
- u.ai.res = sqlite3MemCompare(pIn3, pIn1, pOp->p4.pColl);
+ u.aj.res = sqlite3MemCompare(pIn3, pIn1, pOp->p4.pColl);
}
switch( pOp->opcode ){
- case OP_Eq: u.ai.res = u.ai.res==0; break;
- case OP_Ne: u.ai.res = u.ai.res!=0; break;
- case OP_Lt: u.ai.res = u.ai.res<0; break;
- case OP_Le: u.ai.res = u.ai.res<=0; break;
- case OP_Gt: u.ai.res = u.ai.res>0; break;
- default: u.ai.res = u.ai.res>=0; break;
+ case OP_Eq: u.aj.res = u.aj.res==0; break;
+ case OP_Ne: u.aj.res = u.aj.res!=0; break;
+ case OP_Lt: u.aj.res = u.aj.res<0; break;
+ case OP_Le: u.aj.res = u.aj.res<=0; break;
+ case OP_Gt: u.aj.res = u.aj.res>0; break;
+ default: u.aj.res = u.aj.res>=0; break;
}
if( pOp->p5 & SQLITE_STOREP2 ){
pOut = &aMem[pOp->p2];
memAboutToChange(p, pOut);
MemSetTypeFlag(pOut, MEM_Int);
- pOut->u.i = u.ai.res;
+ pOut->u.i = u.aj.res;
REGISTER_TRACE(pOp->p2, pOut);
- }else if( u.ai.res ){
+ }else if( u.aj.res ){
pc = pOp->p2-1;
}
/* Undo any changes made by applyAffinity() to the input registers. */
- pIn1->flags = (pIn1->flags&~MEM_TypeMask) | (u.ai.flags1&MEM_TypeMask);
- pIn3->flags = (pIn3->flags&~MEM_TypeMask) | (u.ai.flags3&MEM_TypeMask);
+ pIn1->flags = (pIn1->flags&~MEM_TypeMask) | (u.aj.flags1&MEM_TypeMask);
+ pIn3->flags = (pIn3->flags&~MEM_TypeMask) | (u.aj.flags3&MEM_TypeMask);
break;
}
@@ -62249,7 +66628,7 @@
** and strings are less than blobs.
*/
case OP_Compare: {
-#if 0 /* local variables moved into u.aj */
+#if 0 /* local variables moved into u.ak */
int n;
int i;
int p1;
@@ -62258,37 +66637,37 @@
int idx;
CollSeq *pColl; /* Collating sequence to use on this term */
int bRev; /* True for DESCENDING sort order */
-#endif /* local variables moved into u.aj */
+#endif /* local variables moved into u.ak */
- u.aj.n = pOp->p3;
- u.aj.pKeyInfo = pOp->p4.pKeyInfo;
- assert( u.aj.n>0 );
- assert( u.aj.pKeyInfo!=0 );
- u.aj.p1 = pOp->p1;
- u.aj.p2 = pOp->p2;
+ u.ak.n = pOp->p3;
+ u.ak.pKeyInfo = pOp->p4.pKeyInfo;
+ assert( u.ak.n>0 );
+ assert( u.ak.pKeyInfo!=0 );
+ u.ak.p1 = pOp->p1;
+ u.ak.p2 = pOp->p2;
#if SQLITE_DEBUG
if( aPermute ){
int k, mx = 0;
- for(k=0; k<u.aj.n; k++) if( aPermute[k]>mx ) mx = aPermute[k];
- assert( u.aj.p1>0 && u.aj.p1+mx<=p->nMem+1 );
- assert( u.aj.p2>0 && u.aj.p2+mx<=p->nMem+1 );
+ for(k=0; k<u.ak.n; k++) if( aPermute[k]>mx ) mx = aPermute[k];
+ assert( u.ak.p1>0 && u.ak.p1+mx<=p->nMem+1 );
+ assert( u.ak.p2>0 && u.ak.p2+mx<=p->nMem+1 );
}else{
- assert( u.aj.p1>0 && u.aj.p1+u.aj.n<=p->nMem+1 );
- assert( u.aj.p2>0 && u.aj.p2+u.aj.n<=p->nMem+1 );
+ assert( u.ak.p1>0 && u.ak.p1+u.ak.n<=p->nMem+1 );
+ assert( u.ak.p2>0 && u.ak.p2+u.ak.n<=p->nMem+1 );
}
#endif /* SQLITE_DEBUG */
- for(u.aj.i=0; u.aj.i<u.aj.n; u.aj.i++){
- u.aj.idx = aPermute ? aPermute[u.aj.i] : u.aj.i;
- assert( memIsValid(&aMem[u.aj.p1+u.aj.idx]) );
- assert( memIsValid(&aMem[u.aj.p2+u.aj.idx]) );
- REGISTER_TRACE(u.aj.p1+u.aj.idx, &aMem[u.aj.p1+u.aj.idx]);
- REGISTER_TRACE(u.aj.p2+u.aj.idx, &aMem[u.aj.p2+u.aj.idx]);
- assert( u.aj.i<u.aj.pKeyInfo->nField );
- u.aj.pColl = u.aj.pKeyInfo->aColl[u.aj.i];
- u.aj.bRev = u.aj.pKeyInfo->aSortOrder[u.aj.i];
- iCompare = sqlite3MemCompare(&aMem[u.aj.p1+u.aj.idx], &aMem[u.aj.p2+u.aj.idx], u.aj.pColl);
+ for(u.ak.i=0; u.ak.i<u.ak.n; u.ak.i++){
+ u.ak.idx = aPermute ? aPermute[u.ak.i] : u.ak.i;
+ assert( memIsValid(&aMem[u.ak.p1+u.ak.idx]) );
+ assert( memIsValid(&aMem[u.ak.p2+u.ak.idx]) );
+ REGISTER_TRACE(u.ak.p1+u.ak.idx, &aMem[u.ak.p1+u.ak.idx]);
+ REGISTER_TRACE(u.ak.p2+u.ak.idx, &aMem[u.ak.p2+u.ak.idx]);
+ assert( u.ak.i<u.ak.pKeyInfo->nField );
+ u.ak.pColl = u.ak.pKeyInfo->aColl[u.ak.i];
+ u.ak.bRev = u.ak.pKeyInfo->aSortOrder[u.ak.i];
+ iCompare = sqlite3MemCompare(&aMem[u.ak.p1+u.ak.idx], &aMem[u.ak.p2+u.ak.idx], u.ak.pColl);
if( iCompare ){
- if( u.aj.bRev ) iCompare = -iCompare;
+ if( u.ak.bRev ) iCompare = -iCompare;
break;
}
}
@@ -62333,35 +66712,35 @@
*/
case OP_And: /* same as TK_AND, in1, in2, out3 */
case OP_Or: { /* same as TK_OR, in1, in2, out3 */
-#if 0 /* local variables moved into u.ak */
+#if 0 /* local variables moved into u.al */
int v1; /* Left operand: 0==FALSE, 1==TRUE, 2==UNKNOWN or NULL */
int v2; /* Right operand: 0==FALSE, 1==TRUE, 2==UNKNOWN or NULL */
-#endif /* local variables moved into u.ak */
+#endif /* local variables moved into u.al */
pIn1 = &aMem[pOp->p1];
if( pIn1->flags & MEM_Null ){
- u.ak.v1 = 2;
+ u.al.v1 = 2;
}else{
- u.ak.v1 = sqlite3VdbeIntValue(pIn1)!=0;
+ u.al.v1 = sqlite3VdbeIntValue(pIn1)!=0;
}
pIn2 = &aMem[pOp->p2];
if( pIn2->flags & MEM_Null ){
- u.ak.v2 = 2;
+ u.al.v2 = 2;
}else{
- u.ak.v2 = sqlite3VdbeIntValue(pIn2)!=0;
+ u.al.v2 = sqlite3VdbeIntValue(pIn2)!=0;
}
if( pOp->opcode==OP_And ){
static const unsigned char and_logic[] = { 0, 0, 0, 0, 1, 2, 0, 2, 2 };
- u.ak.v1 = and_logic[u.ak.v1*3+u.ak.v2];
+ u.al.v1 = and_logic[u.al.v1*3+u.al.v2];
}else{
static const unsigned char or_logic[] = { 0, 1, 2, 1, 1, 1, 2, 1, 2 };
- u.ak.v1 = or_logic[u.ak.v1*3+u.ak.v2];
+ u.al.v1 = or_logic[u.al.v1*3+u.al.v2];
}
pOut = &aMem[pOp->p3];
- if( u.ak.v1==2 ){
+ if( u.al.v1==2 ){
MemSetTypeFlag(pOut, MEM_Null);
}else{
- pOut->u.i = u.ak.v1;
+ pOut->u.i = u.al.v1;
MemSetTypeFlag(pOut, MEM_Int);
}
break;
@@ -62401,35 +66780,52 @@
break;
}
+/* Opcode: Once P1 P2 * * *
+**
+** Check if OP_Once flag P1 is set. If so, jump to instruction P2. Otherwise,
+** set the flag and fall through to the next instruction.
+**
+** See also: JumpOnce
+*/
+case OP_Once: { /* jump */
+ assert( pOp->p1<p->nOnceFlag );
+ if( p->aOnceFlag[pOp->p1] ){
+ pc = pOp->p2-1;
+ }else{
+ p->aOnceFlag[pOp->p1] = 1;
+ }
+ break;
+}
+
/* Opcode: If P1 P2 P3 * *
**
-** Jump to P2 if the value in register P1 is true. The value is
+** Jump to P2 if the value in register P1 is true. The value
** is considered true if it is numeric and non-zero. If the value
-** in P1 is NULL then take the jump if P3 is true.
+** in P1 is NULL then take the jump if P3 is non-zero.
*/
/* Opcode: IfNot P1 P2 P3 * *
**
-** Jump to P2 if the value in register P1 is False. The value is
-** is considered true if it has a numeric value of zero. If the value
-** in P1 is NULL then take the jump if P3 is true.
+** Jump to P2 if the value in register P1 is False. The value
+** is considered false if it has a numeric value of zero. If the value
+** in P1 is NULL then take the jump if P3 is zero.
*/
case OP_If: /* jump, in1 */
case OP_IfNot: { /* jump, in1 */
-#if 0 /* local variables moved into u.al */
+#if 0 /* local variables moved into u.am */
int c;
-#endif /* local variables moved into u.al */
+#endif /* local variables moved into u.am */
pIn1 = &aMem[pOp->p1];
if( pIn1->flags & MEM_Null ){
- u.al.c = pOp->p3;
+ u.am.c = pOp->p3;
}else{
#ifdef SQLITE_OMIT_FLOATING_POINT
- u.al.c = sqlite3VdbeIntValue(pIn1)!=0;
+ u.am.c = sqlite3VdbeIntValue(pIn1)!=0;
#else
- u.al.c = sqlite3VdbeRealValue(pIn1)!=0.0;
+ u.am.c = sqlite3VdbeRealValue(pIn1)!=0.0;
#endif
- if( pOp->opcode==OP_IfNot ) u.al.c = !u.al.c;
+ if( pOp->opcode==OP_IfNot ) u.am.c = !u.am.c;
}
- if( u.al.c ){
+ if( u.am.c ){
pc = pOp->p2-1;
}
break;
@@ -62479,7 +66875,7 @@
** register has changed should have this bit set.
*/
case OP_Column: {
-#if 0 /* local variables moved into u.am */
+#if 0 /* local variables moved into u.an */
u32 payloadSize; /* Number of bytes in the record */
i64 payloadSize64; /* Number of bytes in the record */
int p1; /* P1 value of the opcode */
@@ -62501,127 +66897,128 @@
u32 szField; /* Number of bytes in the content of a field */
int szHdr; /* Size of the header size field at start of record */
int avail; /* Number of bytes of available data */
+ u32 t; /* A type code from the record header */
Mem *pReg; /* PseudoTable input register */
-#endif /* local variables moved into u.am */
+#endif /* local variables moved into u.an */
- u.am.p1 = pOp->p1;
- u.am.p2 = pOp->p2;
- u.am.pC = 0;
- memset(&u.am.sMem, 0, sizeof(u.am.sMem));
- assert( u.am.p1<p->nCursor );
+ u.an.p1 = pOp->p1;
+ u.an.p2 = pOp->p2;
+ u.an.pC = 0;
+ memset(&u.an.sMem, 0, sizeof(u.an.sMem));
+ assert( u.an.p1<p->nCursor );
assert( pOp->p3>0 && pOp->p3<=p->nMem );
- u.am.pDest = &aMem[pOp->p3];
- memAboutToChange(p, u.am.pDest);
- MemSetTypeFlag(u.am.pDest, MEM_Null);
- u.am.zRec = 0;
+ u.an.pDest = &aMem[pOp->p3];
+ memAboutToChange(p, u.an.pDest);
+ u.an.zRec = 0;
- /* This block sets the variable u.am.payloadSize to be the total number of
+ /* This block sets the variable u.an.payloadSize to be the total number of
** bytes in the record.
**
- ** u.am.zRec is set to be the complete text of the record if it is available.
+ ** u.an.zRec is set to be the complete text of the record if it is available.
** The complete record text is always available for pseudo-tables
** If the record is stored in a cursor, the complete record text
- ** might be available in the u.am.pC->aRow cache. Or it might not be.
- ** If the data is unavailable, u.am.zRec is set to NULL.
+ ** might be available in the u.an.pC->aRow cache. Or it might not be.
+ ** If the data is unavailable, u.an.zRec is set to NULL.
**
** We also compute the number of columns in the record. For cursors,
** the number of columns is stored in the VdbeCursor.nField element.
*/
- u.am.pC = p->apCsr[u.am.p1];
- assert( u.am.pC!=0 );
+ u.an.pC = p->apCsr[u.an.p1];
+ assert( u.an.pC!=0 );
#ifndef SQLITE_OMIT_VIRTUALTABLE
- assert( u.am.pC->pVtabCursor==0 );
+ assert( u.an.pC->pVtabCursor==0 );
#endif
- u.am.pCrsr = u.am.pC->pCursor;
- if( u.am.pCrsr!=0 ){
+ u.an.pCrsr = u.an.pC->pCursor;
+ if( u.an.pCrsr!=0 ){
/* The record is stored in a B-Tree */
- rc = sqlite3VdbeCursorMoveto(u.am.pC);
+ rc = sqlite3VdbeCursorMoveto(u.an.pC);
if( rc ) goto abort_due_to_error;
- if( u.am.pC->nullRow ){
- u.am.payloadSize = 0;
- }else if( u.am.pC->cacheStatus==p->cacheCtr ){
- u.am.payloadSize = u.am.pC->payloadSize;
- u.am.zRec = (char*)u.am.pC->aRow;
- }else if( u.am.pC->isIndex ){
- assert( sqlite3BtreeCursorIsValid(u.am.pCrsr) );
- rc = sqlite3BtreeKeySize(u.am.pCrsr, &u.am.payloadSize64);
+ if( u.an.pC->nullRow ){
+ u.an.payloadSize = 0;
+ }else if( u.an.pC->cacheStatus==p->cacheCtr ){
+ u.an.payloadSize = u.an.pC->payloadSize;
+ u.an.zRec = (char*)u.an.pC->aRow;
+ }else if( u.an.pC->isIndex ){
+ assert( sqlite3BtreeCursorIsValid(u.an.pCrsr) );
+ VVA_ONLY(rc =) sqlite3BtreeKeySize(u.an.pCrsr, &u.an.payloadSize64);
assert( rc==SQLITE_OK ); /* True because of CursorMoveto() call above */
/* sqlite3BtreeParseCellPtr() uses getVarint32() to extract the
- ** payload size, so it is impossible for u.am.payloadSize64 to be
+ ** payload size, so it is impossible for u.an.payloadSize64 to be
** larger than 32 bits. */
- assert( (u.am.payloadSize64 & SQLITE_MAX_U32)==(u64)u.am.payloadSize64 );
- u.am.payloadSize = (u32)u.am.payloadSize64;
+ assert( (u.an.payloadSize64 & SQLITE_MAX_U32)==(u64)u.an.payloadSize64 );
+ u.an.payloadSize = (u32)u.an.payloadSize64;
}else{
- assert( sqlite3BtreeCursorIsValid(u.am.pCrsr) );
- rc = sqlite3BtreeDataSize(u.am.pCrsr, &u.am.payloadSize);
+ assert( sqlite3BtreeCursorIsValid(u.an.pCrsr) );
+ VVA_ONLY(rc =) sqlite3BtreeDataSize(u.an.pCrsr, &u.an.payloadSize);
assert( rc==SQLITE_OK ); /* DataSize() cannot fail */
}
- }else if( u.am.pC->pseudoTableReg>0 ){
- u.am.pReg = &aMem[u.am.pC->pseudoTableReg];
- assert( u.am.pReg->flags & MEM_Blob );
- assert( memIsValid(u.am.pReg) );
- u.am.payloadSize = u.am.pReg->n;
- u.am.zRec = u.am.pReg->z;
- u.am.pC->cacheStatus = (pOp->p5&OPFLAG_CLEARCACHE) ? CACHE_STALE : p->cacheCtr;
- assert( u.am.payloadSize==0 || u.am.zRec!=0 );
+ }else if( ALWAYS(u.an.pC->pseudoTableReg>0) ){
+ u.an.pReg = &aMem[u.an.pC->pseudoTableReg];
+ assert( u.an.pReg->flags & MEM_Blob );
+ assert( memIsValid(u.an.pReg) );
+ u.an.payloadSize = u.an.pReg->n;
+ u.an.zRec = u.an.pReg->z;
+ u.an.pC->cacheStatus = (pOp->p5&OPFLAG_CLEARCACHE) ? CACHE_STALE : p->cacheCtr;
+ assert( u.an.payloadSize==0 || u.an.zRec!=0 );
}else{
/* Consider the row to be NULL */
- u.am.payloadSize = 0;
+ u.an.payloadSize = 0;
}
- /* If u.am.payloadSize is 0, then just store a NULL */
- if( u.am.payloadSize==0 ){
- assert( u.am.pDest->flags&MEM_Null );
+ /* If u.an.payloadSize is 0, then just store a NULL. This can happen because of
+ ** nullRow or because of a corrupt database. */
+ if( u.an.payloadSize==0 ){
+ MemSetTypeFlag(u.an.pDest, MEM_Null);
goto op_column_out;
}
assert( db->aLimit[SQLITE_LIMIT_LENGTH]>=0 );
- if( u.am.payloadSize > (u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){
+ if( u.an.payloadSize > (u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){
goto too_big;
}
- u.am.nField = u.am.pC->nField;
- assert( u.am.p2<u.am.nField );
+ u.an.nField = u.an.pC->nField;
+ assert( u.an.p2<u.an.nField );
/* Read and parse the table header. Store the results of the parse
** into the record header cache fields of the cursor.
*/
- u.am.aType = u.am.pC->aType;
- if( u.am.pC->cacheStatus==p->cacheCtr ){
- u.am.aOffset = u.am.pC->aOffset;
+ u.an.aType = u.an.pC->aType;
+ if( u.an.pC->cacheStatus==p->cacheCtr ){
+ u.an.aOffset = u.an.pC->aOffset;
}else{
- assert(u.am.aType);
- u.am.avail = 0;
- u.am.pC->aOffset = u.am.aOffset = &u.am.aType[u.am.nField];
- u.am.pC->payloadSize = u.am.payloadSize;
- u.am.pC->cacheStatus = p->cacheCtr;
+ assert(u.an.aType);
+ u.an.avail = 0;
+ u.an.pC->aOffset = u.an.aOffset = &u.an.aType[u.an.nField];
+ u.an.pC->payloadSize = u.an.payloadSize;
+ u.an.pC->cacheStatus = p->cacheCtr;
/* Figure out how many bytes are in the header */
- if( u.am.zRec ){
- u.am.zData = u.am.zRec;
+ if( u.an.zRec ){
+ u.an.zData = u.an.zRec;
}else{
- if( u.am.pC->isIndex ){
- u.am.zData = (char*)sqlite3BtreeKeyFetch(u.am.pCrsr, &u.am.avail);
+ if( u.an.pC->isIndex ){
+ u.an.zData = (char*)sqlite3BtreeKeyFetch(u.an.pCrsr, &u.an.avail);
}else{
- u.am.zData = (char*)sqlite3BtreeDataFetch(u.am.pCrsr, &u.am.avail);
+ u.an.zData = (char*)sqlite3BtreeDataFetch(u.an.pCrsr, &u.an.avail);
}
/* If KeyFetch()/DataFetch() managed to get the entire payload,
- ** save the payload in the u.am.pC->aRow cache. That will save us from
+ ** save the payload in the u.an.pC->aRow cache. That will save us from
** having to make additional calls to fetch the content portion of
** the record.
*/
- assert( u.am.avail>=0 );
- if( u.am.payloadSize <= (u32)u.am.avail ){
- u.am.zRec = u.am.zData;
- u.am.pC->aRow = (u8*)u.am.zData;
+ assert( u.an.avail>=0 );
+ if( u.an.payloadSize <= (u32)u.an.avail ){
+ u.an.zRec = u.an.zData;
+ u.an.pC->aRow = (u8*)u.an.zData;
}else{
- u.am.pC->aRow = 0;
+ u.an.pC->aRow = 0;
}
}
/* The following assert is true in all cases accept when
** the database file has been corrupted externally.
- ** assert( u.am.zRec!=0 || u.am.avail>=u.am.payloadSize || u.am.avail>=9 ); */
- u.am.szHdr = getVarint32((u8*)u.am.zData, u.am.offset);
+ ** assert( u.an.zRec!=0 || u.an.avail>=u.an.payloadSize || u.an.avail>=9 ); */
+ u.an.szHdr = getVarint32((u8*)u.an.zData, u.an.offset);
/* Make sure a corrupt database has not given us an oversize header.
** Do this now to avoid an oversize memory allocation.
@@ -62632,26 +67029,26 @@
** 3-byte type for each of the maximum of 32768 columns plus three
** extra bytes for the header length itself. 32768*3 + 3 = 98307.
*/
- if( u.am.offset > 98307 ){
+ if( u.an.offset > 98307 ){
rc = SQLITE_CORRUPT_BKPT;
goto op_column_out;
}
- /* Compute in u.am.len the number of bytes of data we need to read in order
- ** to get u.am.nField type values. u.am.offset is an upper bound on this. But
- ** u.am.nField might be significantly less than the true number of columns
- ** in the table, and in that case, 5*u.am.nField+3 might be smaller than u.am.offset.
- ** We want to minimize u.am.len in order to limit the size of the memory
- ** allocation, especially if a corrupt database file has caused u.am.offset
+ /* Compute in u.an.len the number of bytes of data we need to read in order
+ ** to get u.an.nField type values. u.an.offset is an upper bound on this. But
+ ** u.an.nField might be significantly less than the true number of columns
+ ** in the table, and in that case, 5*u.an.nField+3 might be smaller than u.an.offset.
+ ** We want to minimize u.an.len in order to limit the size of the memory
+ ** allocation, especially if a corrupt database file has caused u.an.offset
** to be oversized. Offset is limited to 98307 above. But 98307 might
** still exceed Robson memory allocation limits on some configurations.
- ** On systems that cannot tolerate large memory allocations, u.am.nField*5+3
- ** will likely be much smaller since u.am.nField will likely be less than
+ ** On systems that cannot tolerate large memory allocations, u.an.nField*5+3
+ ** will likely be much smaller since u.an.nField will likely be less than
** 20 or so. This insures that Robson memory allocation limits are
** not exceeded even for corrupt database files.
*/
- u.am.len = u.am.nField*5 + 3;
- if( u.am.len > (int)u.am.offset ) u.am.len = (int)u.am.offset;
+ u.an.len = u.an.nField*5 + 3;
+ if( u.an.len > (int)u.an.offset ) u.an.len = (int)u.an.offset;
/* The KeyFetch() or DataFetch() above are fast and will get the entire
** record header in most cases. But they will fail to get the complete
@@ -62659,45 +67056,51 @@
** in the B-Tree. When that happens, use sqlite3VdbeMemFromBtree() to
** acquire the complete header text.
*/
- if( !u.am.zRec && u.am.avail<u.am.len ){
- u.am.sMem.flags = 0;
- u.am.sMem.db = 0;
- rc = sqlite3VdbeMemFromBtree(u.am.pCrsr, 0, u.am.len, u.am.pC->isIndex, &u.am.sMem);
+ if( !u.an.zRec && u.an.avail<u.an.len ){
+ u.an.sMem.flags = 0;
+ u.an.sMem.db = 0;
+ rc = sqlite3VdbeMemFromBtree(u.an.pCrsr, 0, u.an.len, u.an.pC->isIndex, &u.an.sMem);
if( rc!=SQLITE_OK ){
goto op_column_out;
}
- u.am.zData = u.am.sMem.z;
+ u.an.zData = u.an.sMem.z;
}
- u.am.zEndHdr = (u8 *)&u.am.zData[u.am.len];
- u.am.zIdx = (u8 *)&u.am.zData[u.am.szHdr];
+ u.an.zEndHdr = (u8 *)&u.an.zData[u.an.len];
+ u.an.zIdx = (u8 *)&u.an.zData[u.an.szHdr];
- /* Scan the header and use it to fill in the u.am.aType[] and u.am.aOffset[]
- ** arrays. u.am.aType[u.am.i] will contain the type integer for the u.am.i-th
- ** column and u.am.aOffset[u.am.i] will contain the u.am.offset from the beginning
- ** of the record to the start of the data for the u.am.i-th column
+ /* Scan the header and use it to fill in the u.an.aType[] and u.an.aOffset[]
+ ** arrays. u.an.aType[u.an.i] will contain the type integer for the u.an.i-th
+ ** column and u.an.aOffset[u.an.i] will contain the u.an.offset from the beginning
+ ** of the record to the start of the data for the u.an.i-th column
*/
- for(u.am.i=0; u.am.i<u.am.nField; u.am.i++){
- if( u.am.zIdx<u.am.zEndHdr ){
- u.am.aOffset[u.am.i] = u.am.offset;
- u.am.zIdx += getVarint32(u.am.zIdx, u.am.aType[u.am.i]);
- u.am.szField = sqlite3VdbeSerialTypeLen(u.am.aType[u.am.i]);
- u.am.offset += u.am.szField;
- if( u.am.offset<u.am.szField ){ /* True if u.am.offset overflows */
- u.am.zIdx = &u.am.zEndHdr[1]; /* Forces SQLITE_CORRUPT return below */
+ for(u.an.i=0; u.an.i<u.an.nField; u.an.i++){
+ if( u.an.zIdx<u.an.zEndHdr ){
+ u.an.aOffset[u.an.i] = u.an.offset;
+ if( u.an.zIdx[0]<0x80 ){
+ u.an.t = u.an.zIdx[0];
+ u.an.zIdx++;
+ }else{
+ u.an.zIdx += sqlite3GetVarint32(u.an.zIdx, &u.an.t);
+ }
+ u.an.aType[u.an.i] = u.an.t;
+ u.an.szField = sqlite3VdbeSerialTypeLen(u.an.t);
+ u.an.offset += u.an.szField;
+ if( u.an.offset<u.an.szField ){ /* True if u.an.offset overflows */
+ u.an.zIdx = &u.an.zEndHdr[1]; /* Forces SQLITE_CORRUPT return below */
break;
}
}else{
- /* If u.am.i is less that u.am.nField, then there are less fields in this
+ /* If u.an.i is less that u.an.nField, then there are less fields in this
** record than SetNumColumns indicated there are columns in the
- ** table. Set the u.am.offset for any extra columns not present in
+ ** table. Set the u.an.offset for any extra columns not present in
** the record to 0. This tells code below to store a NULL
** instead of deserializing a value from the record.
*/
- u.am.aOffset[u.am.i] = 0;
+ u.an.aOffset[u.an.i] = 0;
}
}
- sqlite3VdbeMemRelease(&u.am.sMem);
- u.am.sMem.flags = MEM_Null;
+ sqlite3VdbeMemRelease(&u.an.sMem);
+ u.an.sMem.flags = MEM_Null;
/* If we have read more header data than was contained in the header,
** or if the end of the last field appears to be past the end of the
@@ -62705,63 +67108,63 @@
** of the record (when all fields present), then we must be dealing
** with a corrupt database.
*/
- if( (u.am.zIdx > u.am.zEndHdr) || (u.am.offset > u.am.payloadSize)
- || (u.am.zIdx==u.am.zEndHdr && u.am.offset!=u.am.payloadSize) ){
+ if( (u.an.zIdx > u.an.zEndHdr) || (u.an.offset > u.an.payloadSize)
+ || (u.an.zIdx==u.an.zEndHdr && u.an.offset!=u.an.payloadSize) ){
rc = SQLITE_CORRUPT_BKPT;
goto op_column_out;
}
}
- /* Get the column information. If u.am.aOffset[u.am.p2] is non-zero, then
- ** deserialize the value from the record. If u.am.aOffset[u.am.p2] is zero,
+ /* Get the column information. If u.an.aOffset[u.an.p2] is non-zero, then
+ ** deserialize the value from the record. If u.an.aOffset[u.an.p2] is zero,
** then there are not enough fields in the record to satisfy the
** request. In this case, set the value NULL or to P4 if P4 is
** a pointer to a Mem object.
*/
- if( u.am.aOffset[u.am.p2] ){
+ if( u.an.aOffset[u.an.p2] ){
assert( rc==SQLITE_OK );
- if( u.am.zRec ){
- sqlite3VdbeMemReleaseExternal(u.am.pDest);
- sqlite3VdbeSerialGet((u8 *)&u.am.zRec[u.am.aOffset[u.am.p2]], u.am.aType[u.am.p2], u.am.pDest);
+ if( u.an.zRec ){
+ VdbeMemRelease(u.an.pDest);
+ sqlite3VdbeSerialGet((u8 *)&u.an.zRec[u.an.aOffset[u.an.p2]], u.an.aType[u.an.p2], u.an.pDest);
}else{
- u.am.len = sqlite3VdbeSerialTypeLen(u.am.aType[u.am.p2]);
- sqlite3VdbeMemMove(&u.am.sMem, u.am.pDest);
- rc = sqlite3VdbeMemFromBtree(u.am.pCrsr, u.am.aOffset[u.am.p2], u.am.len, u.am.pC->isIndex, &u.am.sMem);
+ u.an.len = sqlite3VdbeSerialTypeLen(u.an.aType[u.an.p2]);
+ sqlite3VdbeMemMove(&u.an.sMem, u.an.pDest);
+ rc = sqlite3VdbeMemFromBtree(u.an.pCrsr, u.an.aOffset[u.an.p2], u.an.len, u.an.pC->isIndex, &u.an.sMem);
if( rc!=SQLITE_OK ){
goto op_column_out;
}
- u.am.zData = u.am.sMem.z;
- sqlite3VdbeSerialGet((u8*)u.am.zData, u.am.aType[u.am.p2], u.am.pDest);
+ u.an.zData = u.an.sMem.z;
+ sqlite3VdbeSerialGet((u8*)u.an.zData, u.an.aType[u.an.p2], u.an.pDest);
}
- u.am.pDest->enc = encoding;
+ u.an.pDest->enc = encoding;
}else{
if( pOp->p4type==P4_MEM ){
- sqlite3VdbeMemShallowCopy(u.am.pDest, pOp->p4.pMem, MEM_Static);
+ sqlite3VdbeMemShallowCopy(u.an.pDest, pOp->p4.pMem, MEM_Static);
}else{
- assert( u.am.pDest->flags&MEM_Null );
+ MemSetTypeFlag(u.an.pDest, MEM_Null);
}
}
/* If we dynamically allocated space to hold the data (in the
** sqlite3VdbeMemFromBtree() call above) then transfer control of that
- ** dynamically allocated space over to the u.am.pDest structure.
+ ** dynamically allocated space over to the u.an.pDest structure.
** This prevents a memory copy.
*/
- if( u.am.sMem.zMalloc ){
- assert( u.am.sMem.z==u.am.sMem.zMalloc );
- assert( !(u.am.pDest->flags & MEM_Dyn) );
- assert( !(u.am.pDest->flags & (MEM_Blob|MEM_Str)) || u.am.pDest->z==u.am.sMem.z );
- u.am.pDest->flags &= ~(MEM_Ephem|MEM_Static);
- u.am.pDest->flags |= MEM_Term;
- u.am.pDest->z = u.am.sMem.z;
- u.am.pDest->zMalloc = u.am.sMem.zMalloc;
+ if( u.an.sMem.zMalloc ){
+ assert( u.an.sMem.z==u.an.sMem.zMalloc );
+ assert( !(u.an.pDest->flags & MEM_Dyn) );
+ assert( !(u.an.pDest->flags & (MEM_Blob|MEM_Str)) || u.an.pDest->z==u.an.sMem.z );
+ u.an.pDest->flags &= ~(MEM_Ephem|MEM_Static);
+ u.an.pDest->flags |= MEM_Term;
+ u.an.pDest->z = u.an.sMem.z;
+ u.an.pDest->zMalloc = u.an.sMem.zMalloc;
}
- rc = sqlite3VdbeMemMakeWriteable(u.am.pDest);
+ rc = sqlite3VdbeMemMakeWriteable(u.an.pDest);
op_column_out:
- UPDATE_MAX_BLOBSIZE(u.am.pDest);
- REGISTER_TRACE(pOp->p3, u.am.pDest);
+ UPDATE_MAX_BLOBSIZE(u.an.pDest);
+ REGISTER_TRACE(pOp->p3, u.an.pDest);
break;
}
@@ -62774,20 +67177,20 @@
** memory cell in the range.
*/
case OP_Affinity: {
-#if 0 /* local variables moved into u.an */
+#if 0 /* local variables moved into u.ao */
const char *zAffinity; /* The affinity to be applied */
char cAff; /* A single character of affinity */
-#endif /* local variables moved into u.an */
+#endif /* local variables moved into u.ao */
- u.an.zAffinity = pOp->p4.z;
- assert( u.an.zAffinity!=0 );
- assert( u.an.zAffinity[pOp->p2]==0 );
+ u.ao.zAffinity = pOp->p4.z;
+ assert( u.ao.zAffinity!=0 );
+ assert( u.ao.zAffinity[pOp->p2]==0 );
pIn1 = &aMem[pOp->p1];
- while( (u.an.cAff = *(u.an.zAffinity++))!=0 ){
+ while( (u.ao.cAff = *(u.ao.zAffinity++))!=0 ){
assert( pIn1 <= &p->aMem[p->nMem] );
assert( memIsValid(pIn1) );
ExpandBlob(pIn1);
- applyAffinity(pIn1, u.an.cAff, encoding);
+ applyAffinity(pIn1, u.ao.cAff, encoding);
pIn1++;
}
break;
@@ -62809,7 +67212,7 @@
** If P4 is NULL then all index fields have the affinity NONE.
*/
case OP_MakeRecord: {
-#if 0 /* local variables moved into u.ao */
+#if 0 /* local variables moved into u.ap */
u8 *zNewRecord; /* A buffer to hold the data for the new record */
Mem *pRec; /* The new record */
u64 nData; /* Number of bytes of data space */
@@ -62825,7 +67228,7 @@
int file_format; /* File format to use for encoding */
int i; /* Space used in zNewRecord[] */
int len; /* Length of a field */
-#endif /* local variables moved into u.ao */
+#endif /* local variables moved into u.ap */
/* Assuming the record contains N fields, the record format looks
** like this:
@@ -62842,17 +67245,16 @@
** hdr-size field is also a varint which is the offset from the beginning
** of the record to data0.
*/
- u.ao.nData = 0; /* Number of bytes of data space */
- u.ao.nHdr = 0; /* Number of bytes of header space */
- u.ao.nByte = 0; /* Data space required for this record */
- u.ao.nZero = 0; /* Number of zero bytes at the end of the record */
- u.ao.nField = pOp->p1;
- u.ao.zAffinity = pOp->p4.z;
- assert( u.ao.nField>0 && pOp->p2>0 && pOp->p2+u.ao.nField<=p->nMem+1 );
- u.ao.pData0 = &aMem[u.ao.nField];
- u.ao.nField = pOp->p2;
- u.ao.pLast = &u.ao.pData0[u.ao.nField-1];
- u.ao.file_format = p->minWriteFileFormat;
+ u.ap.nData = 0; /* Number of bytes of data space */
+ u.ap.nHdr = 0; /* Number of bytes of header space */
+ u.ap.nZero = 0; /* Number of zero bytes at the end of the record */
+ u.ap.nField = pOp->p1;
+ u.ap.zAffinity = pOp->p4.z;
+ assert( u.ap.nField>0 && pOp->p2>0 && pOp->p2+u.ap.nField<=p->nMem+1 );
+ u.ap.pData0 = &aMem[u.ap.nField];
+ u.ap.nField = pOp->p2;
+ u.ap.pLast = &u.ap.pData0[u.ap.nField-1];
+ u.ap.file_format = p->minWriteFileFormat;
/* Identify the output register */
assert( pOp->p3<pOp->p1 || pOp->p3>=pOp->p1+pOp->p2 );
@@ -62862,34 +67264,34 @@
/* Loop through the elements that will make up the record to figure
** out how much space is required for the new record.
*/
- for(u.ao.pRec=u.ao.pData0; u.ao.pRec<=u.ao.pLast; u.ao.pRec++){
- assert( memIsValid(u.ao.pRec) );
- if( u.ao.zAffinity ){
- applyAffinity(u.ao.pRec, u.ao.zAffinity[u.ao.pRec-u.ao.pData0], encoding);
+ for(u.ap.pRec=u.ap.pData0; u.ap.pRec<=u.ap.pLast; u.ap.pRec++){
+ assert( memIsValid(u.ap.pRec) );
+ if( u.ap.zAffinity ){
+ applyAffinity(u.ap.pRec, u.ap.zAffinity[u.ap.pRec-u.ap.pData0], encoding);
}
- if( u.ao.pRec->flags&MEM_Zero && u.ao.pRec->n>0 ){
- sqlite3VdbeMemExpandBlob(u.ao.pRec);
+ if( u.ap.pRec->flags&MEM_Zero && u.ap.pRec->n>0 ){
+ sqlite3VdbeMemExpandBlob(u.ap.pRec);
}
- u.ao.serial_type = sqlite3VdbeSerialType(u.ao.pRec, u.ao.file_format);
- u.ao.len = sqlite3VdbeSerialTypeLen(u.ao.serial_type);
- u.ao.nData += u.ao.len;
- u.ao.nHdr += sqlite3VarintLen(u.ao.serial_type);
- if( u.ao.pRec->flags & MEM_Zero ){
+ u.ap.serial_type = sqlite3VdbeSerialType(u.ap.pRec, u.ap.file_format);
+ u.ap.len = sqlite3VdbeSerialTypeLen(u.ap.serial_type);
+ u.ap.nData += u.ap.len;
+ u.ap.nHdr += sqlite3VarintLen(u.ap.serial_type);
+ if( u.ap.pRec->flags & MEM_Zero ){
/* Only pure zero-filled BLOBs can be input to this Opcode.
** We do not allow blobs with a prefix and a zero-filled tail. */
- u.ao.nZero += u.ao.pRec->u.nZero;
- }else if( u.ao.len ){
- u.ao.nZero = 0;
+ u.ap.nZero += u.ap.pRec->u.nZero;
+ }else if( u.ap.len ){
+ u.ap.nZero = 0;
}
}
/* Add the initial header varint and total the size */
- u.ao.nHdr += u.ao.nVarint = sqlite3VarintLen(u.ao.nHdr);
- if( u.ao.nVarint<sqlite3VarintLen(u.ao.nHdr) ){
- u.ao.nHdr++;
+ u.ap.nHdr += u.ap.nVarint = sqlite3VarintLen(u.ap.nHdr);
+ if( u.ap.nVarint<sqlite3VarintLen(u.ap.nHdr) ){
+ u.ap.nHdr++;
}
- u.ao.nByte = u.ao.nHdr+u.ao.nData-u.ao.nZero;
- if( u.ao.nByte>db->aLimit[SQLITE_LIMIT_LENGTH] ){
+ u.ap.nByte = u.ap.nHdr+u.ap.nData-u.ap.nZero;
+ if( u.ap.nByte>db->aLimit[SQLITE_LIMIT_LENGTH] ){
goto too_big;
}
@@ -62898,28 +67300,28 @@
** be one of the input registers (because the following call to
** sqlite3VdbeMemGrow() could clobber the value before it is used).
*/
- if( sqlite3VdbeMemGrow(pOut, (int)u.ao.nByte, 0) ){
+ if( sqlite3VdbeMemGrow(pOut, (int)u.ap.nByte, 0) ){
goto no_mem;
}
- u.ao.zNewRecord = (u8 *)pOut->z;
+ u.ap.zNewRecord = (u8 *)pOut->z;
/* Write the record */
- u.ao.i = putVarint32(u.ao.zNewRecord, u.ao.nHdr);
- for(u.ao.pRec=u.ao.pData0; u.ao.pRec<=u.ao.pLast; u.ao.pRec++){
- u.ao.serial_type = sqlite3VdbeSerialType(u.ao.pRec, u.ao.file_format);
- u.ao.i += putVarint32(&u.ao.zNewRecord[u.ao.i], u.ao.serial_type); /* serial type */
+ u.ap.i = putVarint32(u.ap.zNewRecord, u.ap.nHdr);
+ for(u.ap.pRec=u.ap.pData0; u.ap.pRec<=u.ap.pLast; u.ap.pRec++){
+ u.ap.serial_type = sqlite3VdbeSerialType(u.ap.pRec, u.ap.file_format);
+ u.ap.i += putVarint32(&u.ap.zNewRecord[u.ap.i], u.ap.serial_type); /* serial type */
}
- for(u.ao.pRec=u.ao.pData0; u.ao.pRec<=u.ao.pLast; u.ao.pRec++){ /* serial data */
- u.ao.i += sqlite3VdbeSerialPut(&u.ao.zNewRecord[u.ao.i], (int)(u.ao.nByte-u.ao.i), u.ao.pRec,u.ao.file_format);
+ for(u.ap.pRec=u.ap.pData0; u.ap.pRec<=u.ap.pLast; u.ap.pRec++){ /* serial data */
+ u.ap.i += sqlite3VdbeSerialPut(&u.ap.zNewRecord[u.ap.i], (int)(u.ap.nByte-u.ap.i), u.ap.pRec,u.ap.file_format);
}
- assert( u.ao.i==u.ao.nByte );
+ assert( u.ap.i==u.ap.nByte );
assert( pOp->p3>0 && pOp->p3<=p->nMem );
- pOut->n = (int)u.ao.nByte;
+ pOut->n = (int)u.ap.nByte;
pOut->flags = MEM_Blob | MEM_Dyn;
pOut->xDel = 0;
- if( u.ao.nZero ){
- pOut->u.nZero = u.ao.nZero;
+ if( u.ap.nZero ){
+ pOut->u.nZero = u.ap.nZero;
pOut->flags |= MEM_Zero;
}
pOut->enc = SQLITE_UTF8; /* In case the blob is ever converted to text */
@@ -62935,18 +67337,18 @@
*/
#ifndef SQLITE_OMIT_BTREECOUNT
case OP_Count: { /* out2-prerelease */
-#if 0 /* local variables moved into u.ap */
+#if 0 /* local variables moved into u.aq */
i64 nEntry;
BtCursor *pCrsr;
-#endif /* local variables moved into u.ap */
+#endif /* local variables moved into u.aq */
- u.ap.pCrsr = p->apCsr[pOp->p1]->pCursor;
- if( u.ap.pCrsr ){
- rc = sqlite3BtreeCount(u.ap.pCrsr, &u.ap.nEntry);
+ u.aq.pCrsr = p->apCsr[pOp->p1]->pCursor;
+ if( ALWAYS(u.aq.pCrsr) ){
+ rc = sqlite3BtreeCount(u.aq.pCrsr, &u.aq.nEntry);
}else{
- u.ap.nEntry = 0;
+ u.aq.nEntry = 0;
}
- pOut->u.i = u.ap.nEntry;
+ pOut->u.i = u.aq.nEntry;
break;
}
#endif
@@ -62958,7 +67360,7 @@
** existing savepoint, P1==1, or to rollback an existing savepoint P1==2.
*/
case OP_Savepoint: {
-#if 0 /* local variables moved into u.aq */
+#if 0 /* local variables moved into u.ar */
int p1; /* Value of P1 operand */
char *zName; /* Name of savepoint */
int nName;
@@ -62967,20 +67369,20 @@
Savepoint *pTmp;
int iSavepoint;
int ii;
-#endif /* local variables moved into u.aq */
+#endif /* local variables moved into u.ar */
- u.aq.p1 = pOp->p1;
- u.aq.zName = pOp->p4.z;
+ u.ar.p1 = pOp->p1;
+ u.ar.zName = pOp->p4.z;
- /* Assert that the u.aq.p1 parameter is valid. Also that if there is no open
+ /* Assert that the u.ar.p1 parameter is valid. Also that if there is no open
** transaction, then there cannot be any savepoints.
*/
assert( db->pSavepoint==0 || db->autoCommit==0 );
- assert( u.aq.p1==SAVEPOINT_BEGIN||u.aq.p1==SAVEPOINT_RELEASE||u.aq.p1==SAVEPOINT_ROLLBACK );
+ assert( u.ar.p1==SAVEPOINT_BEGIN||u.ar.p1==SAVEPOINT_RELEASE||u.ar.p1==SAVEPOINT_ROLLBACK );
assert( db->pSavepoint || db->isTransactionSavepoint==0 );
assert( checkSavepointCount(db) );
- if( u.aq.p1==SAVEPOINT_BEGIN ){
+ if( u.ar.p1==SAVEPOINT_BEGIN ){
if( db->writeVdbeCnt>0 ){
/* A new savepoint cannot be created if there are active write
** statements (i.e. open read/write incremental blob handles).
@@ -62989,13 +67391,24 @@
"SQL statements in progress");
rc = SQLITE_BUSY;
}else{
- u.aq.nName = sqlite3Strlen30(u.aq.zName);
+ u.ar.nName = sqlite3Strlen30(u.ar.zName);
+
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+ /* This call is Ok even if this savepoint is actually a transaction
+ ** savepoint (and therefore should not prompt xSavepoint()) callbacks.
+ ** If this is a transaction savepoint being opened, it is guaranteed
+ ** that the db->aVTrans[] array is empty. */
+ assert( db->autoCommit==0 || db->nVTrans==0 );
+ rc = sqlite3VtabSavepoint(db, SAVEPOINT_BEGIN,
+ db->nStatement+db->nSavepoint);
+ if( rc!=SQLITE_OK ) goto abort_due_to_error;
+#endif
/* Create a new savepoint structure. */
- u.aq.pNew = sqlite3DbMallocRaw(db, sizeof(Savepoint)+u.aq.nName+1);
- if( u.aq.pNew ){
- u.aq.pNew->zName = (char *)&u.aq.pNew[1];
- memcpy(u.aq.pNew->zName, u.aq.zName, u.aq.nName+1);
+ u.ar.pNew = sqlite3DbMallocRaw(db, sizeof(Savepoint)+u.ar.nName+1);
+ if( u.ar.pNew ){
+ u.ar.pNew->zName = (char *)&u.ar.pNew[1];
+ memcpy(u.ar.pNew->zName, u.ar.zName, u.ar.nName+1);
/* If there is no open transaction, then mark this as a special
** "transaction savepoint". */
@@ -63007,28 +67420,28 @@
}
/* Link the new savepoint into the database handle's list. */
- u.aq.pNew->pNext = db->pSavepoint;
- db->pSavepoint = u.aq.pNew;
- u.aq.pNew->nDeferredCons = db->nDeferredCons;
+ u.ar.pNew->pNext = db->pSavepoint;
+ db->pSavepoint = u.ar.pNew;
+ u.ar.pNew->nDeferredCons = db->nDeferredCons;
}
}
}else{
- u.aq.iSavepoint = 0;
+ u.ar.iSavepoint = 0;
/* Find the named savepoint. If there is no such savepoint, then an
** an error is returned to the user. */
for(
- u.aq.pSavepoint = db->pSavepoint;
- u.aq.pSavepoint && sqlite3StrICmp(u.aq.pSavepoint->zName, u.aq.zName);
- u.aq.pSavepoint = u.aq.pSavepoint->pNext
+ u.ar.pSavepoint = db->pSavepoint;
+ u.ar.pSavepoint && sqlite3StrICmp(u.ar.pSavepoint->zName, u.ar.zName);
+ u.ar.pSavepoint = u.ar.pSavepoint->pNext
){
- u.aq.iSavepoint++;
+ u.ar.iSavepoint++;
}
- if( !u.aq.pSavepoint ){
- sqlite3SetString(&p->zErrMsg, db, "no such savepoint: %s", u.aq.zName);
+ if( !u.ar.pSavepoint ){
+ sqlite3SetString(&p->zErrMsg, db, "no such savepoint: %s", u.ar.zName);
rc = SQLITE_ERROR;
}else if(
- db->writeVdbeCnt>0 || (u.aq.p1==SAVEPOINT_ROLLBACK && db->activeVdbeCnt>1)
+ db->writeVdbeCnt>0 || (u.ar.p1==SAVEPOINT_ROLLBACK && db->activeVdbeCnt>1)
){
/* It is not possible to release (commit) a savepoint if there are
** active write statements. It is not possible to rollback a savepoint
@@ -63036,7 +67449,7 @@
*/
sqlite3SetString(&p->zErrMsg, db,
"cannot %s savepoint - SQL statements in progress",
- (u.aq.p1==SAVEPOINT_ROLLBACK ? "rollback": "release")
+ (u.ar.p1==SAVEPOINT_ROLLBACK ? "rollback": "release")
);
rc = SQLITE_BUSY;
}else{
@@ -63045,8 +67458,8 @@
** and this is a RELEASE command, then the current transaction
** is committed.
*/
- int isTransaction = u.aq.pSavepoint->pNext==0 && db->isTransactionSavepoint;
- if( isTransaction && u.aq.p1==SAVEPOINT_RELEASE ){
+ int isTransaction = u.ar.pSavepoint->pNext==0 && db->isTransactionSavepoint;
+ if( isTransaction && u.ar.p1==SAVEPOINT_RELEASE ){
if( (rc = sqlite3VdbeCheckFk(p, 1))!=SQLITE_OK ){
goto vdbe_return;
}
@@ -63060,26 +67473,26 @@
db->isTransactionSavepoint = 0;
rc = p->rc;
}else{
- u.aq.iSavepoint = db->nSavepoint - u.aq.iSavepoint - 1;
- for(u.aq.ii=0; u.aq.ii<db->nDb; u.aq.ii++){
- rc = sqlite3BtreeSavepoint(db->aDb[u.aq.ii].pBt, u.aq.p1, u.aq.iSavepoint);
+ u.ar.iSavepoint = db->nSavepoint - u.ar.iSavepoint - 1;
+ for(u.ar.ii=0; u.ar.ii<db->nDb; u.ar.ii++){
+ rc = sqlite3BtreeSavepoint(db->aDb[u.ar.ii].pBt, u.ar.p1, u.ar.iSavepoint);
if( rc!=SQLITE_OK ){
goto abort_due_to_error;
}
}
- if( u.aq.p1==SAVEPOINT_ROLLBACK && (db->flags&SQLITE_InternChanges)!=0 ){
+ if( u.ar.p1==SAVEPOINT_ROLLBACK && (db->flags&SQLITE_InternChanges)!=0 ){
sqlite3ExpirePreparedStatements(db);
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
db->flags = (db->flags | SQLITE_InternChanges);
}
}
/* Regardless of whether this is a RELEASE or ROLLBACK, destroy all
** savepoints nested inside of the savepoint being operated on. */
- while( db->pSavepoint!=u.aq.pSavepoint ){
- u.aq.pTmp = db->pSavepoint;
- db->pSavepoint = u.aq.pTmp->pNext;
- sqlite3DbFree(db, u.aq.pTmp);
+ while( db->pSavepoint!=u.ar.pSavepoint ){
+ u.ar.pTmp = db->pSavepoint;
+ db->pSavepoint = u.ar.pTmp->pNext;
+ sqlite3DbFree(db, u.ar.pTmp);
db->nSavepoint--;
}
@@ -63087,15 +67500,20 @@
** too. If it is a ROLLBACK TO, then set the number of deferred
** constraint violations present in the database to the value stored
** when the savepoint was created. */
- if( u.aq.p1==SAVEPOINT_RELEASE ){
- assert( u.aq.pSavepoint==db->pSavepoint );
- db->pSavepoint = u.aq.pSavepoint->pNext;
- sqlite3DbFree(db, u.aq.pSavepoint);
+ if( u.ar.p1==SAVEPOINT_RELEASE ){
+ assert( u.ar.pSavepoint==db->pSavepoint );
+ db->pSavepoint = u.ar.pSavepoint->pNext;
+ sqlite3DbFree(db, u.ar.pSavepoint);
if( !isTransaction ){
db->nSavepoint--;
}
}else{
- db->nDeferredCons = u.aq.pSavepoint->nDeferredCons;
+ db->nDeferredCons = u.ar.pSavepoint->nDeferredCons;
+ }
+
+ if( !isTransaction ){
+ rc = sqlite3VtabSavepoint(db, u.ar.p1, u.ar.iSavepoint);
+ if( rc!=SQLITE_OK ) goto abort_due_to_error;
}
}
}
@@ -63113,20 +67531,20 @@
** This instruction causes the VM to halt.
*/
case OP_AutoCommit: {
-#if 0 /* local variables moved into u.ar */
+#if 0 /* local variables moved into u.as */
int desiredAutoCommit;
int iRollback;
int turnOnAC;
-#endif /* local variables moved into u.ar */
+#endif /* local variables moved into u.as */
- u.ar.desiredAutoCommit = pOp->p1;
- u.ar.iRollback = pOp->p2;
- u.ar.turnOnAC = u.ar.desiredAutoCommit && !db->autoCommit;
- assert( u.ar.desiredAutoCommit==1 || u.ar.desiredAutoCommit==0 );
- assert( u.ar.desiredAutoCommit==1 || u.ar.iRollback==0 );
+ u.as.desiredAutoCommit = pOp->p1;
+ u.as.iRollback = pOp->p2;
+ u.as.turnOnAC = u.as.desiredAutoCommit && !db->autoCommit;
+ assert( u.as.desiredAutoCommit==1 || u.as.desiredAutoCommit==0 );
+ assert( u.as.desiredAutoCommit==1 || u.as.iRollback==0 );
assert( db->activeVdbeCnt>0 ); /* At least this one VM is active */
- if( u.ar.turnOnAC && u.ar.iRollback && db->activeVdbeCnt>1 ){
+ if( u.as.turnOnAC && u.as.iRollback && db->activeVdbeCnt>1 ){
/* If this instruction implements a ROLLBACK and other VMs are
** still running, and a transaction is active, return an error indicating
** that the other VMs must complete first.
@@ -63134,25 +67552,25 @@
sqlite3SetString(&p->zErrMsg, db, "cannot rollback transaction - "
"SQL statements in progress");
rc = SQLITE_BUSY;
- }else if( u.ar.turnOnAC && !u.ar.iRollback && db->writeVdbeCnt>0 ){
+ }else if( u.as.turnOnAC && !u.as.iRollback && db->writeVdbeCnt>0 ){
/* If this instruction implements a COMMIT and other VMs are writing
** return an error indicating that the other VMs must complete first.
*/
sqlite3SetString(&p->zErrMsg, db, "cannot commit transaction - "
"SQL statements in progress");
rc = SQLITE_BUSY;
- }else if( u.ar.desiredAutoCommit!=db->autoCommit ){
- if( u.ar.iRollback ){
- assert( u.ar.desiredAutoCommit==1 );
+ }else if( u.as.desiredAutoCommit!=db->autoCommit ){
+ if( u.as.iRollback ){
+ assert( u.as.desiredAutoCommit==1 );
sqlite3RollbackAll(db);
db->autoCommit = 1;
}else if( (rc = sqlite3VdbeCheckFk(p, 1))!=SQLITE_OK ){
goto vdbe_return;
}else{
- db->autoCommit = (u8)u.ar.desiredAutoCommit;
+ db->autoCommit = (u8)u.as.desiredAutoCommit;
if( sqlite3VdbeHalt(p)==SQLITE_BUSY ){
p->pc = pc;
- db->autoCommit = (u8)(1-u.ar.desiredAutoCommit);
+ db->autoCommit = (u8)(1-u.as.desiredAutoCommit);
p->rc = rc = SQLITE_BUSY;
goto vdbe_return;
}
@@ -63167,8 +67585,8 @@
goto vdbe_return;
}else{
sqlite3SetString(&p->zErrMsg, db,
- (!u.ar.desiredAutoCommit)?"cannot start a transaction within a transaction":(
- (u.ar.iRollback)?"cannot rollback - no transaction is active":
+ (!u.as.desiredAutoCommit)?"cannot start a transaction within a transaction":(
+ (u.as.iRollback)?"cannot rollback - no transaction is active":
"cannot commit - no transaction is active"));
rc = SQLITE_ERROR;
@@ -63208,16 +67626,16 @@
** If P2 is zero, then a read-lock is obtained on the database file.
*/
case OP_Transaction: {
-#if 0 /* local variables moved into u.as */
+#if 0 /* local variables moved into u.at */
Btree *pBt;
-#endif /* local variables moved into u.as */
+#endif /* local variables moved into u.at */
assert( pOp->p1>=0 && pOp->p1<db->nDb );
- assert( (p->btreeMask & (1<<pOp->p1))!=0 );
- u.as.pBt = db->aDb[pOp->p1].pBt;
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
+ u.at.pBt = db->aDb[pOp->p1].pBt;
- if( u.as.pBt ){
- rc = sqlite3BtreeBeginTrans(u.as.pBt, pOp->p2);
+ if( u.at.pBt ){
+ rc = sqlite3BtreeBeginTrans(u.at.pBt, pOp->p2);
if( rc==SQLITE_BUSY ){
p->pc = pc;
p->rc = rc = SQLITE_BUSY;
@@ -63230,13 +67648,17 @@
if( pOp->p2 && p->usesStmtJournal
&& (db->autoCommit==0 || db->activeVdbeCnt>1)
){
- assert( sqlite3BtreeIsInTrans(u.as.pBt) );
+ assert( sqlite3BtreeIsInTrans(u.at.pBt) );
if( p->iStatement==0 ){
assert( db->nStatement>=0 && db->nSavepoint>=0 );
db->nStatement++;
p->iStatement = db->nSavepoint + db->nStatement;
}
- rc = sqlite3BtreeBeginStmt(u.as.pBt, p->iStatement);
+
+ rc = sqlite3VtabSavepoint(db, SAVEPOINT_BEGIN, p->iStatement-1);
+ if( rc==SQLITE_OK ){
+ rc = sqlite3BtreeBeginStmt(u.at.pBt, p->iStatement);
+ }
/* Store the current value of the database handles deferred constraint
** counter. If the statement transaction needs to be rolled back,
@@ -63260,21 +67682,21 @@
** executing this instruction.
*/
case OP_ReadCookie: { /* out2-prerelease */
-#if 0 /* local variables moved into u.at */
+#if 0 /* local variables moved into u.au */
int iMeta;
int iDb;
int iCookie;
-#endif /* local variables moved into u.at */
+#endif /* local variables moved into u.au */
- u.at.iDb = pOp->p1;
- u.at.iCookie = pOp->p3;
+ u.au.iDb = pOp->p1;
+ u.au.iCookie = pOp->p3;
assert( pOp->p3<SQLITE_N_BTREE_META );
- assert( u.at.iDb>=0 && u.at.iDb<db->nDb );
- assert( db->aDb[u.at.iDb].pBt!=0 );
- assert( (p->btreeMask & (1<<u.at.iDb))!=0 );
+ assert( u.au.iDb>=0 && u.au.iDb<db->nDb );
+ assert( db->aDb[u.au.iDb].pBt!=0 );
+ assert( (p->btreeMask & (((yDbMask)1)<<u.au.iDb))!=0 );
- sqlite3BtreeGetMeta(db->aDb[u.at.iDb].pBt, u.at.iCookie, (u32 *)&u.at.iMeta);
- pOut->u.i = u.at.iMeta;
+ sqlite3BtreeGetMeta(db->aDb[u.au.iDb].pBt, u.au.iCookie, (u32 *)&u.au.iMeta);
+ pOut->u.i = u.au.iMeta;
break;
}
@@ -63289,25 +67711,26 @@
** A transaction must be started before executing this opcode.
*/
case OP_SetCookie: { /* in3 */
-#if 0 /* local variables moved into u.au */
+#if 0 /* local variables moved into u.av */
Db *pDb;
-#endif /* local variables moved into u.au */
+#endif /* local variables moved into u.av */
assert( pOp->p2<SQLITE_N_BTREE_META );
assert( pOp->p1>=0 && pOp->p1<db->nDb );
- assert( (p->btreeMask & (1<<pOp->p1))!=0 );
- u.au.pDb = &db->aDb[pOp->p1];
- assert( u.au.pDb->pBt!=0 );
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
+ u.av.pDb = &db->aDb[pOp->p1];
+ assert( u.av.pDb->pBt!=0 );
+ assert( sqlite3SchemaMutexHeld(db, pOp->p1, 0) );
pIn3 = &aMem[pOp->p3];
sqlite3VdbeMemIntegerify(pIn3);
/* See note about index shifting on OP_ReadCookie */
- rc = sqlite3BtreeUpdateMeta(u.au.pDb->pBt, pOp->p2, (int)pIn3->u.i);
+ rc = sqlite3BtreeUpdateMeta(u.av.pDb->pBt, pOp->p2, (int)pIn3->u.i);
if( pOp->p2==BTREE_SCHEMA_VERSION ){
/* When the schema cookie changes, record the new cookie internally */
- u.au.pDb->pSchema->schema_cookie = (int)pIn3->u.i;
+ u.av.pDb->pSchema->schema_cookie = (int)pIn3->u.i;
db->flags |= SQLITE_InternChanges;
}else if( pOp->p2==BTREE_FILE_FORMAT ){
/* Record changes in the file format */
- u.au.pDb->pSchema->file_format = (u8)pIn3->u.i;
+ u.av.pDb->pSchema->file_format = (u8)pIn3->u.i;
}
if( pOp->p1==1 ){
/* Invalidate all prepared statements whenever the TEMP database
@@ -63318,10 +67741,12 @@
break;
}
-/* Opcode: VerifyCookie P1 P2 *
+/* Opcode: VerifyCookie P1 P2 P3 * *
**
** Check the value of global database parameter number 0 (the
-** schema version) and make sure it is equal to P2.
+** schema version) and make sure it is equal to P2 and that the
+** generation counter on the local schema parse equals P3.
+**
** P1 is the database number which is 0 for the main database file
** and 1 for the file holding temporary tables and some higher number
** for auxiliary databases.
@@ -63335,19 +67760,23 @@
** invoked.
*/
case OP_VerifyCookie: {
-#if 0 /* local variables moved into u.av */
+#if 0 /* local variables moved into u.aw */
int iMeta;
+ int iGen;
Btree *pBt;
-#endif /* local variables moved into u.av */
+#endif /* local variables moved into u.aw */
+
assert( pOp->p1>=0 && pOp->p1<db->nDb );
- assert( (p->btreeMask & (1<<pOp->p1))!=0 );
- u.av.pBt = db->aDb[pOp->p1].pBt;
- if( u.av.pBt ){
- sqlite3BtreeGetMeta(u.av.pBt, BTREE_SCHEMA_VERSION, (u32 *)&u.av.iMeta);
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
+ assert( sqlite3SchemaMutexHeld(db, pOp->p1, 0) );
+ u.aw.pBt = db->aDb[pOp->p1].pBt;
+ if( u.aw.pBt ){
+ sqlite3BtreeGetMeta(u.aw.pBt, BTREE_SCHEMA_VERSION, (u32 *)&u.aw.iMeta);
+ u.aw.iGen = db->aDb[pOp->p1].pSchema->iGeneration;
}else{
- u.av.iMeta = 0;
+ u.aw.iGen = u.aw.iMeta = 0;
}
- if( u.av.iMeta!=pOp->p2 ){
+ if( u.aw.iMeta!=pOp->p2 || u.aw.iGen!=pOp->p3 ){
sqlite3DbFree(db, p->zErrMsg);
p->zErrMsg = sqlite3DbStrDup(db, "database schema has changed");
/* If the schema-cookie from the database file matches the cookie
@@ -63363,11 +67792,11 @@
** to be invalidated whenever sqlite3_step() is called from within
** a v-table method.
*/
- if( db->aDb[pOp->p1].pSchema->schema_cookie!=u.av.iMeta ){
+ if( db->aDb[pOp->p1].pSchema->schema_cookie!=u.aw.iMeta ){
sqlite3ResetInternalSchema(db, pOp->p1);
}
- sqlite3ExpirePreparedStatements(db);
+ p->expired = 1;
rc = SQLITE_SCHEMA;
}
break;
@@ -63424,7 +67853,7 @@
*/
case OP_OpenRead:
case OP_OpenWrite: {
-#if 0 /* local variables moved into u.aw */
+#if 0 /* local variables moved into u.ax */
int nField;
KeyInfo *pKeyInfo;
int p2;
@@ -63433,82 +67862,77 @@
Btree *pX;
VdbeCursor *pCur;
Db *pDb;
-#endif /* local variables moved into u.aw */
+#endif /* local variables moved into u.ax */
if( p->expired ){
rc = SQLITE_ABORT;
break;
}
- u.aw.nField = 0;
- u.aw.pKeyInfo = 0;
- u.aw.p2 = pOp->p2;
- u.aw.iDb = pOp->p3;
- assert( u.aw.iDb>=0 && u.aw.iDb<db->nDb );
- assert( (p->btreeMask & (1<<u.aw.iDb))!=0 );
- u.aw.pDb = &db->aDb[u.aw.iDb];
- u.aw.pX = u.aw.pDb->pBt;
- assert( u.aw.pX!=0 );
+ u.ax.nField = 0;
+ u.ax.pKeyInfo = 0;
+ u.ax.p2 = pOp->p2;
+ u.ax.iDb = pOp->p3;
+ assert( u.ax.iDb>=0 && u.ax.iDb<db->nDb );
+ assert( (p->btreeMask & (((yDbMask)1)<<u.ax.iDb))!=0 );
+ u.ax.pDb = &db->aDb[u.ax.iDb];
+ u.ax.pX = u.ax.pDb->pBt;
+ assert( u.ax.pX!=0 );
if( pOp->opcode==OP_OpenWrite ){
- u.aw.wrFlag = 1;
- if( u.aw.pDb->pSchema->file_format < p->minWriteFileFormat ){
- p->minWriteFileFormat = u.aw.pDb->pSchema->file_format;
+ u.ax.wrFlag = 1;
+ assert( sqlite3SchemaMutexHeld(db, u.ax.iDb, 0) );
+ if( u.ax.pDb->pSchema->file_format < p->minWriteFileFormat ){
+ p->minWriteFileFormat = u.ax.pDb->pSchema->file_format;
}
}else{
- u.aw.wrFlag = 0;
+ u.ax.wrFlag = 0;
}
if( pOp->p5 ){
- assert( u.aw.p2>0 );
- assert( u.aw.p2<=p->nMem );
- pIn2 = &aMem[u.aw.p2];
+ assert( u.ax.p2>0 );
+ assert( u.ax.p2<=p->nMem );
+ pIn2 = &aMem[u.ax.p2];
assert( memIsValid(pIn2) );
assert( (pIn2->flags & MEM_Int)!=0 );
sqlite3VdbeMemIntegerify(pIn2);
- u.aw.p2 = (int)pIn2->u.i;
- /* The u.aw.p2 value always comes from a prior OP_CreateTable opcode and
- ** that opcode will always set the u.aw.p2 value to 2 or more or else fail.
+ u.ax.p2 = (int)pIn2->u.i;
+ /* The u.ax.p2 value always comes from a prior OP_CreateTable opcode and
+ ** that opcode will always set the u.ax.p2 value to 2 or more or else fail.
** If there were a failure, the prepared statement would have halted
** before reaching this instruction. */
- if( NEVER(u.aw.p2<2) ) {
+ if( NEVER(u.ax.p2<2) ) {
rc = SQLITE_CORRUPT_BKPT;
goto abort_due_to_error;
}
}
if( pOp->p4type==P4_KEYINFO ){
- u.aw.pKeyInfo = pOp->p4.pKeyInfo;
- u.aw.pKeyInfo->enc = ENC(p->db);
- u.aw.nField = u.aw.pKeyInfo->nField+1;
+ u.ax.pKeyInfo = pOp->p4.pKeyInfo;
+ u.ax.pKeyInfo->enc = ENC(p->db);
+ u.ax.nField = u.ax.pKeyInfo->nField+1;
}else if( pOp->p4type==P4_INT32 ){
- u.aw.nField = pOp->p4.i;
+ u.ax.nField = pOp->p4.i;
}
assert( pOp->p1>=0 );
- u.aw.pCur = allocateCursor(p, pOp->p1, u.aw.nField, u.aw.iDb, 1);
- if( u.aw.pCur==0 ) goto no_mem;
- u.aw.pCur->nullRow = 1;
- u.aw.pCur->isOrdered = 1;
- rc = sqlite3BtreeCursor(u.aw.pX, u.aw.p2, u.aw.wrFlag, u.aw.pKeyInfo, u.aw.pCur->pCursor);
- u.aw.pCur->pKeyInfo = u.aw.pKeyInfo;
+ u.ax.pCur = allocateCursor(p, pOp->p1, u.ax.nField, u.ax.iDb, 1);
+ if( u.ax.pCur==0 ) goto no_mem;
+ u.ax.pCur->nullRow = 1;
+ u.ax.pCur->isOrdered = 1;
+ rc = sqlite3BtreeCursor(u.ax.pX, u.ax.p2, u.ax.wrFlag, u.ax.pKeyInfo, u.ax.pCur->pCursor);
+ u.ax.pCur->pKeyInfo = u.ax.pKeyInfo;
- /* Since it performs no memory allocation or IO, the only values that
- ** sqlite3BtreeCursor() may return are SQLITE_EMPTY and SQLITE_OK.
- ** SQLITE_EMPTY is only returned when attempting to open the table
- ** rooted at page 1 of a zero-byte database. */
- assert( rc==SQLITE_EMPTY || rc==SQLITE_OK );
- if( rc==SQLITE_EMPTY ){
- u.aw.pCur->pCursor = 0;
- rc = SQLITE_OK;
- }
+ /* Since it performs no memory allocation or IO, the only value that
+ ** sqlite3BtreeCursor() may return is SQLITE_OK. */
+ assert( rc==SQLITE_OK );
/* Set the VdbeCursor.isTable and isIndex variables. Previous versions of
** SQLite used to check if the root-page flags were sane at this point
** and report database corruption if they were not, but this check has
** since moved into the btree layer. */
- u.aw.pCur->isTable = pOp->p4type!=P4_KEYINFO;
- u.aw.pCur->isIndex = !u.aw.pCur->isTable;
+ u.ax.pCur->isTable = pOp->p4type!=P4_KEYINFO;
+ u.ax.pCur->isIndex = !u.ax.pCur->isTable;
break;
}
-/* Opcode: OpenEphemeral P1 P2 * P4 *
+/* Opcode: OpenEphemeral P1 P2 * P4 P5
**
** Open a new cursor P1 to a transient table.
** The cursor is always opened read/write even if
@@ -63525,6 +67949,11 @@
** to a TEMP table at the SQL level, or to a table opened by
** this opcode. Then this opcode was call OpenVirtual. But
** that created confusion with the whole virtual-table idea.
+**
+** The P5 parameter can be a mask of the BTREE_* flags defined
+** in btree.h. These flags control aspects of the operation of
+** the btree. The BTREE_OMIT_JOURNAL and BTREE_SINGLE flags are
+** added automatically.
*/
/* Opcode: OpenAutoindex P1 P2 * P4 *
**
@@ -63535,9 +67964,9 @@
*/
case OP_OpenAutoindex:
case OP_OpenEphemeral: {
-#if 0 /* local variables moved into u.ax */
+#if 0 /* local variables moved into u.ay */
VdbeCursor *pCx;
-#endif /* local variables moved into u.ax */
+#endif /* local variables moved into u.ay */
static const int vfsFlags =
SQLITE_OPEN_READWRITE |
SQLITE_OPEN_CREATE |
@@ -63546,13 +67975,13 @@
SQLITE_OPEN_TRANSIENT_DB;
assert( pOp->p1>=0 );
- u.ax.pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, 1);
- if( u.ax.pCx==0 ) goto no_mem;
- u.ax.pCx->nullRow = 1;
- rc = sqlite3BtreeOpen(0, db, &u.ax.pCx->pBt,
+ u.ay.pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, 1);
+ if( u.ay.pCx==0 ) goto no_mem;
+ u.ay.pCx->nullRow = 1;
+ rc = sqlite3BtreeOpen(db->pVfs, 0, db, &u.ay.pCx->pBt,
BTREE_OMIT_JOURNAL | BTREE_SINGLE | pOp->p5, vfsFlags);
if( rc==SQLITE_OK ){
- rc = sqlite3BtreeBeginTrans(u.ax.pCx->pBt, 1);
+ rc = sqlite3BtreeBeginTrans(u.ay.pCx->pBt, 1);
}
if( rc==SQLITE_OK ){
/* If a transient index is required, create it by calling
@@ -63563,22 +67992,46 @@
if( pOp->p4.pKeyInfo ){
int pgno;
assert( pOp->p4type==P4_KEYINFO );
- rc = sqlite3BtreeCreateTable(u.ax.pCx->pBt, &pgno, BTREE_BLOBKEY);
+ rc = sqlite3BtreeCreateTable(u.ay.pCx->pBt, &pgno, BTREE_BLOBKEY | pOp->p5);
if( rc==SQLITE_OK ){
assert( pgno==MASTER_ROOT+1 );
- rc = sqlite3BtreeCursor(u.ax.pCx->pBt, pgno, 1,
- (KeyInfo*)pOp->p4.z, u.ax.pCx->pCursor);
- u.ax.pCx->pKeyInfo = pOp->p4.pKeyInfo;
- u.ax.pCx->pKeyInfo->enc = ENC(p->db);
+ rc = sqlite3BtreeCursor(u.ay.pCx->pBt, pgno, 1,
+ (KeyInfo*)pOp->p4.z, u.ay.pCx->pCursor);
+ u.ay.pCx->pKeyInfo = pOp->p4.pKeyInfo;
+ u.ay.pCx->pKeyInfo->enc = ENC(p->db);
}
- u.ax.pCx->isTable = 0;
+ u.ay.pCx->isTable = 0;
}else{
- rc = sqlite3BtreeCursor(u.ax.pCx->pBt, MASTER_ROOT, 1, 0, u.ax.pCx->pCursor);
- u.ax.pCx->isTable = 1;
+ rc = sqlite3BtreeCursor(u.ay.pCx->pBt, MASTER_ROOT, 1, 0, u.ay.pCx->pCursor);
+ u.ay.pCx->isTable = 1;
}
}
- u.ax.pCx->isOrdered = (pOp->p5!=BTREE_UNORDERED);
- u.ax.pCx->isIndex = !u.ax.pCx->isTable;
+ u.ay.pCx->isOrdered = (pOp->p5!=BTREE_UNORDERED);
+ u.ay.pCx->isIndex = !u.ay.pCx->isTable;
+ break;
+}
+
+/* Opcode: OpenSorter P1 P2 * P4 *
+**
+** This opcode works like OP_OpenEphemeral except that it opens
+** a transient index that is specifically designed to sort large
+** tables using an external merge-sort algorithm.
+*/
+case OP_SorterOpen: {
+#if 0 /* local variables moved into u.az */
+ VdbeCursor *pCx;
+#endif /* local variables moved into u.az */
+#ifndef SQLITE_OMIT_MERGE_SORT
+ u.az.pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, 1);
+ if( u.az.pCx==0 ) goto no_mem;
+ u.az.pCx->pKeyInfo = pOp->p4.pKeyInfo;
+ u.az.pCx->pKeyInfo->enc = ENC(p->db);
+ u.az.pCx->isSorter = 1;
+ rc = sqlite3VdbeSorterInit(db, u.az.pCx);
+#else
+ pOp->opcode = OP_OpenEphemeral;
+ pc--;
+#endif
break;
}
@@ -63598,17 +68051,17 @@
** the pseudo-table.
*/
case OP_OpenPseudo: {
-#if 0 /* local variables moved into u.ay */
+#if 0 /* local variables moved into u.ba */
VdbeCursor *pCx;
-#endif /* local variables moved into u.ay */
+#endif /* local variables moved into u.ba */
assert( pOp->p1>=0 );
- u.ay.pCx = allocateCursor(p, pOp->p1, pOp->p3, -1, 0);
- if( u.ay.pCx==0 ) goto no_mem;
- u.ay.pCx->nullRow = 1;
- u.ay.pCx->pseudoTableReg = pOp->p2;
- u.ay.pCx->isTable = 1;
- u.ay.pCx->isIndex = 0;
+ u.ba.pCx = allocateCursor(p, pOp->p1, pOp->p3, -1, 0);
+ if( u.ba.pCx==0 ) goto no_mem;
+ u.ba.pCx->nullRow = 1;
+ u.ba.pCx->pseudoTableReg = pOp->p2;
+ u.ba.pCx->isTable = 1;
+ u.ba.pCx->isIndex = 0;
break;
}
@@ -63680,35 +68133,35 @@
case OP_SeekLe: /* jump, in3 */
case OP_SeekGe: /* jump, in3 */
case OP_SeekGt: { /* jump, in3 */
-#if 0 /* local variables moved into u.az */
+#if 0 /* local variables moved into u.bb */
int res;
int oc;
VdbeCursor *pC;
UnpackedRecord r;
int nField;
i64 iKey; /* The rowid we are to seek to */
-#endif /* local variables moved into u.az */
+#endif /* local variables moved into u.bb */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
assert( pOp->p2!=0 );
- u.az.pC = p->apCsr[pOp->p1];
- assert( u.az.pC!=0 );
- assert( u.az.pC->pseudoTableReg==0 );
+ u.bb.pC = p->apCsr[pOp->p1];
+ assert( u.bb.pC!=0 );
+ assert( u.bb.pC->pseudoTableReg==0 );
assert( OP_SeekLe == OP_SeekLt+1 );
assert( OP_SeekGe == OP_SeekLt+2 );
assert( OP_SeekGt == OP_SeekLt+3 );
- assert( u.az.pC->isOrdered );
- if( u.az.pC->pCursor!=0 ){
- u.az.oc = pOp->opcode;
- u.az.pC->nullRow = 0;
- if( u.az.pC->isTable ){
+ assert( u.bb.pC->isOrdered );
+ if( ALWAYS(u.bb.pC->pCursor!=0) ){
+ u.bb.oc = pOp->opcode;
+ u.bb.pC->nullRow = 0;
+ if( u.bb.pC->isTable ){
/* The input value in P3 might be of any type: integer, real, string,
** blob, or NULL. But it needs to be an integer before we can do
** the seek, so covert it. */
pIn3 = &aMem[pOp->p3];
applyNumericAffinity(pIn3);
- u.az.iKey = sqlite3VdbeIntValue(pIn3);
- u.az.pC->rowidIsValid = 0;
+ u.bb.iKey = sqlite3VdbeIntValue(pIn3);
+ u.bb.pC->rowidIsValid = 0;
/* If the P3 value could not be converted into an integer without
** loss of information, then special processing is required... */
@@ -63723,101 +68176,101 @@
** point number. */
assert( (pIn3->flags & MEM_Real)!=0 );
- if( u.az.iKey==SMALLEST_INT64 && (pIn3->r<(double)u.az.iKey || pIn3->r>0) ){
+ if( u.bb.iKey==SMALLEST_INT64 && (pIn3->r<(double)u.bb.iKey || pIn3->r>0) ){
/* The P3 value is too large in magnitude to be expressed as an
** integer. */
- u.az.res = 1;
+ u.bb.res = 1;
if( pIn3->r<0 ){
- if( u.az.oc>=OP_SeekGe ){ assert( u.az.oc==OP_SeekGe || u.az.oc==OP_SeekGt );
- rc = sqlite3BtreeFirst(u.az.pC->pCursor, &u.az.res);
+ if( u.bb.oc>=OP_SeekGe ){ assert( u.bb.oc==OP_SeekGe || u.bb.oc==OP_SeekGt );
+ rc = sqlite3BtreeFirst(u.bb.pC->pCursor, &u.bb.res);
if( rc!=SQLITE_OK ) goto abort_due_to_error;
}
}else{
- if( u.az.oc<=OP_SeekLe ){ assert( u.az.oc==OP_SeekLt || u.az.oc==OP_SeekLe );
- rc = sqlite3BtreeLast(u.az.pC->pCursor, &u.az.res);
+ if( u.bb.oc<=OP_SeekLe ){ assert( u.bb.oc==OP_SeekLt || u.bb.oc==OP_SeekLe );
+ rc = sqlite3BtreeLast(u.bb.pC->pCursor, &u.bb.res);
if( rc!=SQLITE_OK ) goto abort_due_to_error;
}
}
- if( u.az.res ){
+ if( u.bb.res ){
pc = pOp->p2 - 1;
}
break;
- }else if( u.az.oc==OP_SeekLt || u.az.oc==OP_SeekGe ){
+ }else if( u.bb.oc==OP_SeekLt || u.bb.oc==OP_SeekGe ){
/* Use the ceiling() function to convert real->int */
- if( pIn3->r > (double)u.az.iKey ) u.az.iKey++;
+ if( pIn3->r > (double)u.bb.iKey ) u.bb.iKey++;
}else{
/* Use the floor() function to convert real->int */
- assert( u.az.oc==OP_SeekLe || u.az.oc==OP_SeekGt );
- if( pIn3->r < (double)u.az.iKey ) u.az.iKey--;
+ assert( u.bb.oc==OP_SeekLe || u.bb.oc==OP_SeekGt );
+ if( pIn3->r < (double)u.bb.iKey ) u.bb.iKey--;
}
}
- rc = sqlite3BtreeMovetoUnpacked(u.az.pC->pCursor, 0, (u64)u.az.iKey, 0, &u.az.res);
+ rc = sqlite3BtreeMovetoUnpacked(u.bb.pC->pCursor, 0, (u64)u.bb.iKey, 0, &u.bb.res);
if( rc!=SQLITE_OK ){
goto abort_due_to_error;
}
- if( u.az.res==0 ){
- u.az.pC->rowidIsValid = 1;
- u.az.pC->lastRowid = u.az.iKey;
+ if( u.bb.res==0 ){
+ u.bb.pC->rowidIsValid = 1;
+ u.bb.pC->lastRowid = u.bb.iKey;
}
}else{
- u.az.nField = pOp->p4.i;
+ u.bb.nField = pOp->p4.i;
assert( pOp->p4type==P4_INT32 );
- assert( u.az.nField>0 );
- u.az.r.pKeyInfo = u.az.pC->pKeyInfo;
- u.az.r.nField = (u16)u.az.nField;
+ assert( u.bb.nField>0 );
+ u.bb.r.pKeyInfo = u.bb.pC->pKeyInfo;
+ u.bb.r.nField = (u16)u.bb.nField;
/* The next line of code computes as follows, only faster:
- ** if( u.az.oc==OP_SeekGt || u.az.oc==OP_SeekLe ){
- ** u.az.r.flags = UNPACKED_INCRKEY;
+ ** if( u.bb.oc==OP_SeekGt || u.bb.oc==OP_SeekLe ){
+ ** u.bb.r.flags = UNPACKED_INCRKEY;
** }else{
- ** u.az.r.flags = 0;
+ ** u.bb.r.flags = 0;
** }
*/
- u.az.r.flags = (u16)(UNPACKED_INCRKEY * (1 & (u.az.oc - OP_SeekLt)));
- assert( u.az.oc!=OP_SeekGt || u.az.r.flags==UNPACKED_INCRKEY );
- assert( u.az.oc!=OP_SeekLe || u.az.r.flags==UNPACKED_INCRKEY );
- assert( u.az.oc!=OP_SeekGe || u.az.r.flags==0 );
- assert( u.az.oc!=OP_SeekLt || u.az.r.flags==0 );
+ u.bb.r.flags = (u16)(UNPACKED_INCRKEY * (1 & (u.bb.oc - OP_SeekLt)));
+ assert( u.bb.oc!=OP_SeekGt || u.bb.r.flags==UNPACKED_INCRKEY );
+ assert( u.bb.oc!=OP_SeekLe || u.bb.r.flags==UNPACKED_INCRKEY );
+ assert( u.bb.oc!=OP_SeekGe || u.bb.r.flags==0 );
+ assert( u.bb.oc!=OP_SeekLt || u.bb.r.flags==0 );
- u.az.r.aMem = &aMem[pOp->p3];
+ u.bb.r.aMem = &aMem[pOp->p3];
#ifdef SQLITE_DEBUG
- { int i; for(i=0; i<u.az.r.nField; i++) assert( memIsValid(&u.az.r.aMem[i]) ); }
+ { int i; for(i=0; i<u.bb.r.nField; i++) assert( memIsValid(&u.bb.r.aMem[i]) ); }
#endif
- ExpandBlob(u.az.r.aMem);
- rc = sqlite3BtreeMovetoUnpacked(u.az.pC->pCursor, &u.az.r, 0, 0, &u.az.res);
+ ExpandBlob(u.bb.r.aMem);
+ rc = sqlite3BtreeMovetoUnpacked(u.bb.pC->pCursor, &u.bb.r, 0, 0, &u.bb.res);
if( rc!=SQLITE_OK ){
goto abort_due_to_error;
}
- u.az.pC->rowidIsValid = 0;
+ u.bb.pC->rowidIsValid = 0;
}
- u.az.pC->deferredMoveto = 0;
- u.az.pC->cacheStatus = CACHE_STALE;
+ u.bb.pC->deferredMoveto = 0;
+ u.bb.pC->cacheStatus = CACHE_STALE;
#ifdef SQLITE_TEST
sqlite3_search_count++;
#endif
- if( u.az.oc>=OP_SeekGe ){ assert( u.az.oc==OP_SeekGe || u.az.oc==OP_SeekGt );
- if( u.az.res<0 || (u.az.res==0 && u.az.oc==OP_SeekGt) ){
- rc = sqlite3BtreeNext(u.az.pC->pCursor, &u.az.res);
+ if( u.bb.oc>=OP_SeekGe ){ assert( u.bb.oc==OP_SeekGe || u.bb.oc==OP_SeekGt );
+ if( u.bb.res<0 || (u.bb.res==0 && u.bb.oc==OP_SeekGt) ){
+ rc = sqlite3BtreeNext(u.bb.pC->pCursor, &u.bb.res);
if( rc!=SQLITE_OK ) goto abort_due_to_error;
- u.az.pC->rowidIsValid = 0;
+ u.bb.pC->rowidIsValid = 0;
}else{
- u.az.res = 0;
+ u.bb.res = 0;
}
}else{
- assert( u.az.oc==OP_SeekLt || u.az.oc==OP_SeekLe );
- if( u.az.res>0 || (u.az.res==0 && u.az.oc==OP_SeekLt) ){
- rc = sqlite3BtreePrevious(u.az.pC->pCursor, &u.az.res);
+ assert( u.bb.oc==OP_SeekLt || u.bb.oc==OP_SeekLe );
+ if( u.bb.res>0 || (u.bb.res==0 && u.bb.oc==OP_SeekLt) ){
+ rc = sqlite3BtreePrevious(u.bb.pC->pCursor, &u.bb.res);
if( rc!=SQLITE_OK ) goto abort_due_to_error;
- u.az.pC->rowidIsValid = 0;
+ u.bb.pC->rowidIsValid = 0;
}else{
- /* u.az.res might be negative because the table is empty. Check to
+ /* u.bb.res might be negative because the table is empty. Check to
** see if this is the case.
*/
- u.az.res = sqlite3BtreeEof(u.az.pC->pCursor);
+ u.bb.res = sqlite3BtreeEof(u.bb.pC->pCursor);
}
}
assert( pOp->p2>0 );
- if( u.az.res ){
+ if( u.bb.res ){
pc = pOp->p2 - 1;
}
}else{
@@ -63840,20 +68293,20 @@
** occur, no unnecessary I/O happens.
*/
case OP_Seek: { /* in2 */
-#if 0 /* local variables moved into u.ba */
+#if 0 /* local variables moved into u.bc */
VdbeCursor *pC;
-#endif /* local variables moved into u.ba */
+#endif /* local variables moved into u.bc */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.ba.pC = p->apCsr[pOp->p1];
- assert( u.ba.pC!=0 );
- if( ALWAYS(u.ba.pC->pCursor!=0) ){
- assert( u.ba.pC->isTable );
- u.ba.pC->nullRow = 0;
+ u.bc.pC = p->apCsr[pOp->p1];
+ assert( u.bc.pC!=0 );
+ if( ALWAYS(u.bc.pC->pCursor!=0) ){
+ assert( u.bc.pC->isTable );
+ u.bc.pC->nullRow = 0;
pIn2 = &aMem[pOp->p2];
- u.ba.pC->movetoTarget = sqlite3VdbeIntValue(pIn2);
- u.ba.pC->rowidIsValid = 0;
- u.ba.pC->deferredMoveto = 1;
+ u.bc.pC->movetoTarget = sqlite3VdbeIntValue(pIn2);
+ u.bc.pC->rowidIsValid = 0;
+ u.bc.pC->deferredMoveto = 1;
}
break;
}
@@ -63885,62 +68338,63 @@
*/
case OP_NotFound: /* jump, in3 */
case OP_Found: { /* jump, in3 */
-#if 0 /* local variables moved into u.bb */
+#if 0 /* local variables moved into u.bd */
int alreadyExists;
VdbeCursor *pC;
int res;
+ char *pFree;
UnpackedRecord *pIdxKey;
UnpackedRecord r;
char aTempRec[ROUND8(sizeof(UnpackedRecord)) + sizeof(Mem)*3 + 7];
-#endif /* local variables moved into u.bb */
+#endif /* local variables moved into u.bd */
#ifdef SQLITE_TEST
sqlite3_found_count++;
#endif
- u.bb.alreadyExists = 0;
+ u.bd.alreadyExists = 0;
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
assert( pOp->p4type==P4_INT32 );
- u.bb.pC = p->apCsr[pOp->p1];
- assert( u.bb.pC!=0 );
+ u.bd.pC = p->apCsr[pOp->p1];
+ assert( u.bd.pC!=0 );
pIn3 = &aMem[pOp->p3];
- if( ALWAYS(u.bb.pC->pCursor!=0) ){
+ if( ALWAYS(u.bd.pC->pCursor!=0) ){
- assert( u.bb.pC->isTable==0 );
+ assert( u.bd.pC->isTable==0 );
if( pOp->p4.i>0 ){
- u.bb.r.pKeyInfo = u.bb.pC->pKeyInfo;
- u.bb.r.nField = (u16)pOp->p4.i;
- u.bb.r.aMem = pIn3;
+ u.bd.r.pKeyInfo = u.bd.pC->pKeyInfo;
+ u.bd.r.nField = (u16)pOp->p4.i;
+ u.bd.r.aMem = pIn3;
#ifdef SQLITE_DEBUG
- { int i; for(i=0; i<u.bb.r.nField; i++) assert( memIsValid(&u.bb.r.aMem[i]) ); }
+ { int i; for(i=0; i<u.bd.r.nField; i++) assert( memIsValid(&u.bd.r.aMem[i]) ); }
#endif
- u.bb.r.flags = UNPACKED_PREFIX_MATCH;
- u.bb.pIdxKey = &u.bb.r;
+ u.bd.r.flags = UNPACKED_PREFIX_MATCH;
+ u.bd.pIdxKey = &u.bd.r;
}else{
+ u.bd.pIdxKey = sqlite3VdbeAllocUnpackedRecord(
+ u.bd.pC->pKeyInfo, u.bd.aTempRec, sizeof(u.bd.aTempRec), &u.bd.pFree
+ );
+ if( u.bd.pIdxKey==0 ) goto no_mem;
assert( pIn3->flags & MEM_Blob );
assert( (pIn3->flags & MEM_Zero)==0 ); /* zeroblobs already expanded */
- u.bb.pIdxKey = sqlite3VdbeRecordUnpack(u.bb.pC->pKeyInfo, pIn3->n, pIn3->z,
- u.bb.aTempRec, sizeof(u.bb.aTempRec));
- if( u.bb.pIdxKey==0 ){
- goto no_mem;
- }
- u.bb.pIdxKey->flags |= UNPACKED_PREFIX_MATCH;
+ sqlite3VdbeRecordUnpack(u.bd.pC->pKeyInfo, pIn3->n, pIn3->z, u.bd.pIdxKey);
+ u.bd.pIdxKey->flags |= UNPACKED_PREFIX_MATCH;
}
- rc = sqlite3BtreeMovetoUnpacked(u.bb.pC->pCursor, u.bb.pIdxKey, 0, 0, &u.bb.res);
+ rc = sqlite3BtreeMovetoUnpacked(u.bd.pC->pCursor, u.bd.pIdxKey, 0, 0, &u.bd.res);
if( pOp->p4.i==0 ){
- sqlite3VdbeDeleteUnpackedRecord(u.bb.pIdxKey);
+ sqlite3DbFree(db, u.bd.pFree);
}
if( rc!=SQLITE_OK ){
break;
}
- u.bb.alreadyExists = (u.bb.res==0);
- u.bb.pC->deferredMoveto = 0;
- u.bb.pC->cacheStatus = CACHE_STALE;
+ u.bd.alreadyExists = (u.bd.res==0);
+ u.bd.pC->deferredMoveto = 0;
+ u.bd.pC->cacheStatus = CACHE_STALE;
}
if( pOp->opcode==OP_Found ){
- if( u.bb.alreadyExists ) pc = pOp->p2 - 1;
+ if( u.bd.alreadyExists ) pc = pOp->p2 - 1;
}else{
- if( !u.bb.alreadyExists ) pc = pOp->p2 - 1;
+ if( !u.bd.alreadyExists ) pc = pOp->p2 - 1;
}
break;
}
@@ -63972,7 +68426,7 @@
** See also: NotFound, NotExists, Found
*/
case OP_IsUnique: { /* jump, in3 */
-#if 0 /* local variables moved into u.bc */
+#if 0 /* local variables moved into u.be */
u16 ii;
VdbeCursor *pCx;
BtCursor *pCrsr;
@@ -63980,55 +68434,55 @@
Mem *aMx;
UnpackedRecord r; /* B-Tree index search key */
i64 R; /* Rowid stored in register P3 */
-#endif /* local variables moved into u.bc */
+#endif /* local variables moved into u.be */
pIn3 = &aMem[pOp->p3];
- u.bc.aMx = &aMem[pOp->p4.i];
+ u.be.aMx = &aMem[pOp->p4.i];
/* Assert that the values of parameters P1 and P4 are in range. */
assert( pOp->p4type==P4_INT32 );
assert( pOp->p4.i>0 && pOp->p4.i<=p->nMem );
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
/* Find the index cursor. */
- u.bc.pCx = p->apCsr[pOp->p1];
- assert( u.bc.pCx->deferredMoveto==0 );
- u.bc.pCx->seekResult = 0;
- u.bc.pCx->cacheStatus = CACHE_STALE;
- u.bc.pCrsr = u.bc.pCx->pCursor;
+ u.be.pCx = p->apCsr[pOp->p1];
+ assert( u.be.pCx->deferredMoveto==0 );
+ u.be.pCx->seekResult = 0;
+ u.be.pCx->cacheStatus = CACHE_STALE;
+ u.be.pCrsr = u.be.pCx->pCursor;
/* If any of the values are NULL, take the jump. */
- u.bc.nField = u.bc.pCx->pKeyInfo->nField;
- for(u.bc.ii=0; u.bc.ii<u.bc.nField; u.bc.ii++){
- if( u.bc.aMx[u.bc.ii].flags & MEM_Null ){
+ u.be.nField = u.be.pCx->pKeyInfo->nField;
+ for(u.be.ii=0; u.be.ii<u.be.nField; u.be.ii++){
+ if( u.be.aMx[u.be.ii].flags & MEM_Null ){
pc = pOp->p2 - 1;
- u.bc.pCrsr = 0;
+ u.be.pCrsr = 0;
break;
}
}
- assert( (u.bc.aMx[u.bc.nField].flags & MEM_Null)==0 );
+ assert( (u.be.aMx[u.be.nField].flags & MEM_Null)==0 );
- if( u.bc.pCrsr!=0 ){
+ if( u.be.pCrsr!=0 ){
/* Populate the index search key. */
- u.bc.r.pKeyInfo = u.bc.pCx->pKeyInfo;
- u.bc.r.nField = u.bc.nField + 1;
- u.bc.r.flags = UNPACKED_PREFIX_SEARCH;
- u.bc.r.aMem = u.bc.aMx;
+ u.be.r.pKeyInfo = u.be.pCx->pKeyInfo;
+ u.be.r.nField = u.be.nField + 1;
+ u.be.r.flags = UNPACKED_PREFIX_SEARCH;
+ u.be.r.aMem = u.be.aMx;
#ifdef SQLITE_DEBUG
- { int i; for(i=0; i<u.bc.r.nField; i++) assert( memIsValid(&u.bc.r.aMem[i]) ); }
+ { int i; for(i=0; i<u.be.r.nField; i++) assert( memIsValid(&u.be.r.aMem[i]) ); }
#endif
- /* Extract the value of u.bc.R from register P3. */
+ /* Extract the value of u.be.R from register P3. */
sqlite3VdbeMemIntegerify(pIn3);
- u.bc.R = pIn3->u.i;
+ u.be.R = pIn3->u.i;
/* Search the B-Tree index. If no conflicting record is found, jump
** to P2. Otherwise, copy the rowid of the conflicting record to
** register P3 and fall through to the next instruction. */
- rc = sqlite3BtreeMovetoUnpacked(u.bc.pCrsr, &u.bc.r, 0, 0, &u.bc.pCx->seekResult);
- if( (u.bc.r.flags & UNPACKED_PREFIX_SEARCH) || u.bc.r.rowid==u.bc.R ){
+ rc = sqlite3BtreeMovetoUnpacked(u.be.pCrsr, &u.be.r, 0, 0, &u.be.pCx->seekResult);
+ if( (u.be.r.flags & UNPACKED_PREFIX_SEARCH) || u.be.r.rowid==u.be.R ){
pc = pOp->p2 - 1;
}else{
- pIn3->u.i = u.bc.r.rowid;
+ pIn3->u.i = u.be.r.rowid;
}
}
break;
@@ -64036,7 +68490,7 @@
/* Opcode: NotExists P1 P2 P3 * *
**
-** Use the content of register P3 as a integer key. If a record
+** Use the content of register P3 as an integer key. If a record
** with that key does not exist in table of P1, then jump to P2.
** If the record does exist, then fall through. The cursor is left
** pointing to the record if it exists.
@@ -64049,42 +68503,42 @@
** See also: Found, NotFound, IsUnique
*/
case OP_NotExists: { /* jump, in3 */
-#if 0 /* local variables moved into u.bd */
+#if 0 /* local variables moved into u.bf */
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
u64 iKey;
-#endif /* local variables moved into u.bd */
+#endif /* local variables moved into u.bf */
pIn3 = &aMem[pOp->p3];
assert( pIn3->flags & MEM_Int );
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bd.pC = p->apCsr[pOp->p1];
- assert( u.bd.pC!=0 );
- assert( u.bd.pC->isTable );
- assert( u.bd.pC->pseudoTableReg==0 );
- u.bd.pCrsr = u.bd.pC->pCursor;
- if( u.bd.pCrsr!=0 ){
- u.bd.res = 0;
- u.bd.iKey = pIn3->u.i;
- rc = sqlite3BtreeMovetoUnpacked(u.bd.pCrsr, 0, u.bd.iKey, 0, &u.bd.res);
- u.bd.pC->lastRowid = pIn3->u.i;
- u.bd.pC->rowidIsValid = u.bd.res==0 ?1:0;
- u.bd.pC->nullRow = 0;
- u.bd.pC->cacheStatus = CACHE_STALE;
- u.bd.pC->deferredMoveto = 0;
- if( u.bd.res!=0 ){
+ u.bf.pC = p->apCsr[pOp->p1];
+ assert( u.bf.pC!=0 );
+ assert( u.bf.pC->isTable );
+ assert( u.bf.pC->pseudoTableReg==0 );
+ u.bf.pCrsr = u.bf.pC->pCursor;
+ if( ALWAYS(u.bf.pCrsr!=0) ){
+ u.bf.res = 0;
+ u.bf.iKey = pIn3->u.i;
+ rc = sqlite3BtreeMovetoUnpacked(u.bf.pCrsr, 0, u.bf.iKey, 0, &u.bf.res);
+ u.bf.pC->lastRowid = pIn3->u.i;
+ u.bf.pC->rowidIsValid = u.bf.res==0 ?1:0;
+ u.bf.pC->nullRow = 0;
+ u.bf.pC->cacheStatus = CACHE_STALE;
+ u.bf.pC->deferredMoveto = 0;
+ if( u.bf.res!=0 ){
pc = pOp->p2 - 1;
- assert( u.bd.pC->rowidIsValid==0 );
+ assert( u.bf.pC->rowidIsValid==0 );
}
- u.bd.pC->seekResult = u.bd.res;
+ u.bf.pC->seekResult = u.bf.res;
}else{
/* This happens when an attempt to open a read cursor on the
** sqlite_master table returns SQLITE_EMPTY.
*/
pc = pOp->p2 - 1;
- assert( u.bd.pC->rowidIsValid==0 );
- u.bd.pC->seekResult = 0;
+ assert( u.bf.pC->rowidIsValid==0 );
+ u.bf.pC->seekResult = 0;
}
break;
}
@@ -64114,26 +68568,26 @@
** If P3>0 then P3 is a register in the root frame of this VDBE that holds
** the largest previously generated record number. No new record numbers are
** allowed to be less than this value. When this value reaches its maximum,
-** a SQLITE_FULL error is generated. The P3 register is updated with the '
+** an SQLITE_FULL error is generated. The P3 register is updated with the '
** generated record number. This P3 mechanism is used to help implement the
** AUTOINCREMENT feature.
*/
case OP_NewRowid: { /* out2-prerelease */
-#if 0 /* local variables moved into u.be */
+#if 0 /* local variables moved into u.bg */
i64 v; /* The new rowid */
VdbeCursor *pC; /* Cursor of table to get the new rowid */
int res; /* Result of an sqlite3BtreeLast() */
int cnt; /* Counter to limit the number of searches */
Mem *pMem; /* Register holding largest rowid for AUTOINCREMENT */
VdbeFrame *pFrame; /* Root frame of VDBE */
-#endif /* local variables moved into u.be */
+#endif /* local variables moved into u.bg */
- u.be.v = 0;
- u.be.res = 0;
+ u.bg.v = 0;
+ u.bg.res = 0;
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.be.pC = p->apCsr[pOp->p1];
- assert( u.be.pC!=0 );
- if( NEVER(u.be.pC->pCursor==0) ){
+ u.bg.pC = p->apCsr[pOp->p1];
+ assert( u.bg.pC!=0 );
+ if( NEVER(u.bg.pC->pCursor==0) ){
/* The zero initialization above is all that is needed */
}else{
/* The next rowid or record number (different terms for the same
@@ -64149,8 +68603,7 @@
** succeeded. If the random rowid does exist, we select a new one
** and try again, up to 100 times.
*/
- assert( u.be.pC->isTable );
- u.be.cnt = 0;
+ assert( u.bg.pC->isTable );
#ifdef SQLITE_32BIT_ROWID
# define MAX_ROWID 0x7fffffff
@@ -64162,23 +68615,23 @@
# define MAX_ROWID (i64)( (((u64)0x7fffffff)<<32) | (u64)0xffffffff )
#endif
- if( !u.be.pC->useRandomRowid ){
- u.be.v = sqlite3BtreeGetCachedRowid(u.be.pC->pCursor);
- if( u.be.v==0 ){
- rc = sqlite3BtreeLast(u.be.pC->pCursor, &u.be.res);
+ if( !u.bg.pC->useRandomRowid ){
+ u.bg.v = sqlite3BtreeGetCachedRowid(u.bg.pC->pCursor);
+ if( u.bg.v==0 ){
+ rc = sqlite3BtreeLast(u.bg.pC->pCursor, &u.bg.res);
if( rc!=SQLITE_OK ){
goto abort_due_to_error;
}
- if( u.be.res ){
- u.be.v = 1; /* IMP: R-61914-48074 */
+ if( u.bg.res ){
+ u.bg.v = 1; /* IMP: R-61914-48074 */
}else{
- assert( sqlite3BtreeCursorIsValid(u.be.pC->pCursor) );
- rc = sqlite3BtreeKeySize(u.be.pC->pCursor, &u.be.v);
+ assert( sqlite3BtreeCursorIsValid(u.bg.pC->pCursor) );
+ rc = sqlite3BtreeKeySize(u.bg.pC->pCursor, &u.bg.v);
assert( rc==SQLITE_OK ); /* Cannot fail following BtreeLast() */
- if( u.be.v==MAX_ROWID ){
- u.be.pC->useRandomRowid = 1;
+ if( u.bg.v==MAX_ROWID ){
+ u.bg.pC->useRandomRowid = 1;
}else{
- u.be.v++; /* IMP: R-29538-34987 */
+ u.bg.v++; /* IMP: R-29538-34987 */
}
}
}
@@ -64188,35 +68641,35 @@
/* Assert that P3 is a valid memory cell. */
assert( pOp->p3>0 );
if( p->pFrame ){
- for(u.be.pFrame=p->pFrame; u.be.pFrame->pParent; u.be.pFrame=u.be.pFrame->pParent);
+ for(u.bg.pFrame=p->pFrame; u.bg.pFrame->pParent; u.bg.pFrame=u.bg.pFrame->pParent);
/* Assert that P3 is a valid memory cell. */
- assert( pOp->p3<=u.be.pFrame->nMem );
- u.be.pMem = &u.be.pFrame->aMem[pOp->p3];
+ assert( pOp->p3<=u.bg.pFrame->nMem );
+ u.bg.pMem = &u.bg.pFrame->aMem[pOp->p3];
}else{
/* Assert that P3 is a valid memory cell. */
assert( pOp->p3<=p->nMem );
- u.be.pMem = &aMem[pOp->p3];
- memAboutToChange(p, u.be.pMem);
+ u.bg.pMem = &aMem[pOp->p3];
+ memAboutToChange(p, u.bg.pMem);
}
- assert( memIsValid(u.be.pMem) );
+ assert( memIsValid(u.bg.pMem) );
- REGISTER_TRACE(pOp->p3, u.be.pMem);
- sqlite3VdbeMemIntegerify(u.be.pMem);
- assert( (u.be.pMem->flags & MEM_Int)!=0 ); /* mem(P3) holds an integer */
- if( u.be.pMem->u.i==MAX_ROWID || u.be.pC->useRandomRowid ){
+ REGISTER_TRACE(pOp->p3, u.bg.pMem);
+ sqlite3VdbeMemIntegerify(u.bg.pMem);
+ assert( (u.bg.pMem->flags & MEM_Int)!=0 ); /* mem(P3) holds an integer */
+ if( u.bg.pMem->u.i==MAX_ROWID || u.bg.pC->useRandomRowid ){
rc = SQLITE_FULL; /* IMP: R-12275-61338 */
goto abort_due_to_error;
}
- if( u.be.v<u.be.pMem->u.i+1 ){
- u.be.v = u.be.pMem->u.i + 1;
+ if( u.bg.v<u.bg.pMem->u.i+1 ){
+ u.bg.v = u.bg.pMem->u.i + 1;
}
- u.be.pMem->u.i = u.be.v;
+ u.bg.pMem->u.i = u.bg.v;
}
#endif
- sqlite3BtreeSetCachedRowid(u.be.pC->pCursor, u.be.v<MAX_ROWID ? u.be.v+1 : 0);
+ sqlite3BtreeSetCachedRowid(u.bg.pC->pCursor, u.bg.v<MAX_ROWID ? u.bg.v+1 : 0);
}
- if( u.be.pC->useRandomRowid ){
+ if( u.bg.pC->useRandomRowid ){
/* IMPLEMENTATION-OF: R-07677-41881 If the largest ROWID is equal to the
** largest possible integer (9223372036854775807) then the database
** engine starts picking positive candidate ROWIDs at random until
@@ -64224,35 +68677,35 @@
assert( pOp->p3==0 ); /* We cannot be in random rowid mode if this is
** an AUTOINCREMENT table. */
/* on the first attempt, simply do one more than previous */
- u.be.v = db->lastRowid;
- u.be.v &= (MAX_ROWID>>1); /* ensure doesn't go negative */
- u.be.v++; /* ensure non-zero */
- u.be.cnt = 0;
- while( ((rc = sqlite3BtreeMovetoUnpacked(u.be.pC->pCursor, 0, (u64)u.be.v,
- 0, &u.be.res))==SQLITE_OK)
- && (u.be.res==0)
- && (++u.be.cnt<100)){
+ u.bg.v = lastRowid;
+ u.bg.v &= (MAX_ROWID>>1); /* ensure doesn't go negative */
+ u.bg.v++; /* ensure non-zero */
+ u.bg.cnt = 0;
+ while( ((rc = sqlite3BtreeMovetoUnpacked(u.bg.pC->pCursor, 0, (u64)u.bg.v,
+ 0, &u.bg.res))==SQLITE_OK)
+ && (u.bg.res==0)
+ && (++u.bg.cnt<100)){
/* collision - try another random rowid */
- sqlite3_randomness(sizeof(u.be.v), &u.be.v);
- if( u.be.cnt<5 ){
+ sqlite3_randomness(sizeof(u.bg.v), &u.bg.v);
+ if( u.bg.cnt<5 ){
/* try "small" random rowids for the initial attempts */
- u.be.v &= 0xffffff;
+ u.bg.v &= 0xffffff;
}else{
- u.be.v &= (MAX_ROWID>>1); /* ensure doesn't go negative */
+ u.bg.v &= (MAX_ROWID>>1); /* ensure doesn't go negative */
}
- u.be.v++; /* ensure non-zero */
+ u.bg.v++; /* ensure non-zero */
}
- if( rc==SQLITE_OK && u.be.res==0 ){
+ if( rc==SQLITE_OK && u.bg.res==0 ){
rc = SQLITE_FULL; /* IMP: R-38219-53002 */
goto abort_due_to_error;
}
- assert( u.be.v>0 ); /* EV: R-40812-03570 */
+ assert( u.bg.v>0 ); /* EV: R-40812-03570 */
}
- u.be.pC->rowidIsValid = 0;
- u.be.pC->deferredMoveto = 0;
- u.be.pC->cacheStatus = CACHE_STALE;
+ u.bg.pC->rowidIsValid = 0;
+ u.bg.pC->deferredMoveto = 0;
+ u.bg.pC->cacheStatus = CACHE_STALE;
}
- pOut->u.i = u.be.v;
+ pOut->u.i = u.bg.v;
break;
}
@@ -64302,7 +68755,7 @@
*/
case OP_Insert:
case OP_InsertInt: {
-#if 0 /* local variables moved into u.bf */
+#if 0 /* local variables moved into u.bh */
Mem *pData; /* MEM cell holding data for the record to be inserted */
Mem *pKey; /* MEM cell holding key for the record */
i64 iKey; /* The integer ROWID or key for the record to be inserted */
@@ -64312,60 +68765,60 @@
const char *zDb; /* database name - used by the update hook */
const char *zTbl; /* Table name - used by the opdate hook */
int op; /* Opcode for update hook: SQLITE_UPDATE or SQLITE_INSERT */
-#endif /* local variables moved into u.bf */
+#endif /* local variables moved into u.bh */
- u.bf.pData = &aMem[pOp->p2];
+ u.bh.pData = &aMem[pOp->p2];
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- assert( memIsValid(u.bf.pData) );
- u.bf.pC = p->apCsr[pOp->p1];
- assert( u.bf.pC!=0 );
- assert( u.bf.pC->pCursor!=0 );
- assert( u.bf.pC->pseudoTableReg==0 );
- assert( u.bf.pC->isTable );
- REGISTER_TRACE(pOp->p2, u.bf.pData);
+ assert( memIsValid(u.bh.pData) );
+ u.bh.pC = p->apCsr[pOp->p1];
+ assert( u.bh.pC!=0 );
+ assert( u.bh.pC->pCursor!=0 );
+ assert( u.bh.pC->pseudoTableReg==0 );
+ assert( u.bh.pC->isTable );
+ REGISTER_TRACE(pOp->p2, u.bh.pData);
if( pOp->opcode==OP_Insert ){
- u.bf.pKey = &aMem[pOp->p3];
- assert( u.bf.pKey->flags & MEM_Int );
- assert( memIsValid(u.bf.pKey) );
- REGISTER_TRACE(pOp->p3, u.bf.pKey);
- u.bf.iKey = u.bf.pKey->u.i;
+ u.bh.pKey = &aMem[pOp->p3];
+ assert( u.bh.pKey->flags & MEM_Int );
+ assert( memIsValid(u.bh.pKey) );
+ REGISTER_TRACE(pOp->p3, u.bh.pKey);
+ u.bh.iKey = u.bh.pKey->u.i;
}else{
assert( pOp->opcode==OP_InsertInt );
- u.bf.iKey = pOp->p3;
+ u.bh.iKey = pOp->p3;
}
if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++;
- if( pOp->p5 & OPFLAG_LASTROWID ) db->lastRowid = u.bf.iKey;
- if( u.bf.pData->flags & MEM_Null ){
- u.bf.pData->z = 0;
- u.bf.pData->n = 0;
+ if( pOp->p5 & OPFLAG_LASTROWID ) db->lastRowid = lastRowid = u.bh.iKey;
+ if( u.bh.pData->flags & MEM_Null ){
+ u.bh.pData->z = 0;
+ u.bh.pData->n = 0;
}else{
- assert( u.bf.pData->flags & (MEM_Blob|MEM_Str) );
+ assert( u.bh.pData->flags & (MEM_Blob|MEM_Str) );
}
- u.bf.seekResult = ((pOp->p5 & OPFLAG_USESEEKRESULT) ? u.bf.pC->seekResult : 0);
- if( u.bf.pData->flags & MEM_Zero ){
- u.bf.nZero = u.bf.pData->u.nZero;
+ u.bh.seekResult = ((pOp->p5 & OPFLAG_USESEEKRESULT) ? u.bh.pC->seekResult : 0);
+ if( u.bh.pData->flags & MEM_Zero ){
+ u.bh.nZero = u.bh.pData->u.nZero;
}else{
- u.bf.nZero = 0;
+ u.bh.nZero = 0;
}
- sqlite3BtreeSetCachedRowid(u.bf.pC->pCursor, 0);
- rc = sqlite3BtreeInsert(u.bf.pC->pCursor, 0, u.bf.iKey,
- u.bf.pData->z, u.bf.pData->n, u.bf.nZero,
- pOp->p5 & OPFLAG_APPEND, u.bf.seekResult
+ sqlite3BtreeSetCachedRowid(u.bh.pC->pCursor, 0);
+ rc = sqlite3BtreeInsert(u.bh.pC->pCursor, 0, u.bh.iKey,
+ u.bh.pData->z, u.bh.pData->n, u.bh.nZero,
+ pOp->p5 & OPFLAG_APPEND, u.bh.seekResult
);
- u.bf.pC->rowidIsValid = 0;
- u.bf.pC->deferredMoveto = 0;
- u.bf.pC->cacheStatus = CACHE_STALE;
+ u.bh.pC->rowidIsValid = 0;
+ u.bh.pC->deferredMoveto = 0;
+ u.bh.pC->cacheStatus = CACHE_STALE;
/* Invoke the update-hook if required. */
if( rc==SQLITE_OK && db->xUpdateCallback && pOp->p4.z ){
- u.bf.zDb = db->aDb[u.bf.pC->iDb].zName;
- u.bf.zTbl = pOp->p4.z;
- u.bf.op = ((pOp->p5 & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_INSERT);
- assert( u.bf.pC->isTable );
- db->xUpdateCallback(db->pUpdateArg, u.bf.op, u.bf.zDb, u.bf.zTbl, u.bf.iKey);
- assert( u.bf.pC->iDb>=0 );
+ u.bh.zDb = db->aDb[u.bh.pC->iDb].zName;
+ u.bh.zTbl = pOp->p4.z;
+ u.bh.op = ((pOp->p5 & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_INSERT);
+ assert( u.bh.pC->isTable );
+ db->xUpdateCallback(db->pUpdateArg, u.bh.op, u.bh.zDb, u.bh.zTbl, u.bh.iKey);
+ assert( u.bh.pC->iDb>=0 );
}
break;
}
@@ -64391,47 +68844,47 @@
** using OP_NotFound prior to invoking this opcode.
*/
case OP_Delete: {
-#if 0 /* local variables moved into u.bg */
+#if 0 /* local variables moved into u.bi */
i64 iKey;
VdbeCursor *pC;
-#endif /* local variables moved into u.bg */
+#endif /* local variables moved into u.bi */
- u.bg.iKey = 0;
+ u.bi.iKey = 0;
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bg.pC = p->apCsr[pOp->p1];
- assert( u.bg.pC!=0 );
- assert( u.bg.pC->pCursor!=0 ); /* Only valid for real tables, no pseudotables */
+ u.bi.pC = p->apCsr[pOp->p1];
+ assert( u.bi.pC!=0 );
+ assert( u.bi.pC->pCursor!=0 ); /* Only valid for real tables, no pseudotables */
- /* If the update-hook will be invoked, set u.bg.iKey to the rowid of the
+ /* If the update-hook will be invoked, set u.bi.iKey to the rowid of the
** row being deleted.
*/
if( db->xUpdateCallback && pOp->p4.z ){
- assert( u.bg.pC->isTable );
- assert( u.bg.pC->rowidIsValid ); /* lastRowid set by previous OP_NotFound */
- u.bg.iKey = u.bg.pC->lastRowid;
+ assert( u.bi.pC->isTable );
+ assert( u.bi.pC->rowidIsValid ); /* lastRowid set by previous OP_NotFound */
+ u.bi.iKey = u.bi.pC->lastRowid;
}
/* The OP_Delete opcode always follows an OP_NotExists or OP_Last or
** OP_Column on the same table without any intervening operations that
- ** might move or invalidate the cursor. Hence cursor u.bg.pC is always pointing
+ ** might move or invalidate the cursor. Hence cursor u.bi.pC is always pointing
** to the row to be deleted and the sqlite3VdbeCursorMoveto() operation
** below is always a no-op and cannot fail. We will run it anyhow, though,
** to guard against future changes to the code generator.
**/
- assert( u.bg.pC->deferredMoveto==0 );
- rc = sqlite3VdbeCursorMoveto(u.bg.pC);
+ assert( u.bi.pC->deferredMoveto==0 );
+ rc = sqlite3VdbeCursorMoveto(u.bi.pC);
if( NEVER(rc!=SQLITE_OK) ) goto abort_due_to_error;
- sqlite3BtreeSetCachedRowid(u.bg.pC->pCursor, 0);
- rc = sqlite3BtreeDelete(u.bg.pC->pCursor);
- u.bg.pC->cacheStatus = CACHE_STALE;
+ sqlite3BtreeSetCachedRowid(u.bi.pC->pCursor, 0);
+ rc = sqlite3BtreeDelete(u.bi.pC->pCursor);
+ u.bi.pC->cacheStatus = CACHE_STALE;
/* Invoke the update-hook if required. */
if( rc==SQLITE_OK && db->xUpdateCallback && pOp->p4.z ){
- const char *zDb = db->aDb[u.bg.pC->iDb].zName;
+ const char *zDb = db->aDb[u.bi.pC->iDb].zName;
const char *zTbl = pOp->p4.z;
- db->xUpdateCallback(db->pUpdateArg, SQLITE_DELETE, zDb, zTbl, u.bg.iKey);
- assert( u.bg.pC->iDb>=0 );
+ db->xUpdateCallback(db->pUpdateArg, SQLITE_DELETE, zDb, zTbl, u.bi.iKey);
+ assert( u.bi.pC->iDb>=0 );
}
if( pOp->p2 & OPFLAG_NCHANGE ) p->nChange++;
break;
@@ -64449,6 +68902,49 @@
break;
}
+/* Opcode: SorterCompare P1 P2 P3
+**
+** P1 is a sorter cursor. This instruction compares the record blob in
+** register P3 with the entry that the sorter cursor currently points to.
+** If, excluding the rowid fields at the end, the two records are a match,
+** fall through to the next instruction. Otherwise, jump to instruction P2.
+*/
+case OP_SorterCompare: {
+#if 0 /* local variables moved into u.bj */
+ VdbeCursor *pC;
+ int res;
+#endif /* local variables moved into u.bj */
+
+ u.bj.pC = p->apCsr[pOp->p1];
+ assert( isSorter(u.bj.pC) );
+ pIn3 = &aMem[pOp->p3];
+ rc = sqlite3VdbeSorterCompare(u.bj.pC, pIn3, &u.bj.res);
+ if( u.bj.res ){
+ pc = pOp->p2-1;
+ }
+ break;
+};
+
+/* Opcode: SorterData P1 P2 * * *
+**
+** Write into register P2 the current sorter data for sorter cursor P1.
+*/
+case OP_SorterData: {
+#if 0 /* local variables moved into u.bk */
+ VdbeCursor *pC;
+#endif /* local variables moved into u.bk */
+#ifndef SQLITE_OMIT_MERGE_SORT
+ pOut = &aMem[pOp->p2];
+ u.bk.pC = p->apCsr[pOp->p1];
+ assert( u.bk.pC->isSorter );
+ rc = sqlite3VdbeSorterRowkey(u.bk.pC, pOut);
+#else
+ pOp->opcode = OP_RowKey;
+ pc--;
+#endif
+ break;
+}
+
/* Opcode: RowData P1 P2 * * *
**
** Write into register P2 the complete row data for cursor P1.
@@ -64471,61 +68967,63 @@
*/
case OP_RowKey:
case OP_RowData: {
-#if 0 /* local variables moved into u.bh */
+#if 0 /* local variables moved into u.bl */
VdbeCursor *pC;
BtCursor *pCrsr;
u32 n;
i64 n64;
-#endif /* local variables moved into u.bh */
+#endif /* local variables moved into u.bl */
pOut = &aMem[pOp->p2];
memAboutToChange(p, pOut);
/* Note that RowKey and RowData are really exactly the same instruction */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bh.pC = p->apCsr[pOp->p1];
- assert( u.bh.pC->isTable || pOp->opcode==OP_RowKey );
- assert( u.bh.pC->isIndex || pOp->opcode==OP_RowData );
- assert( u.bh.pC!=0 );
- assert( u.bh.pC->nullRow==0 );
- assert( u.bh.pC->pseudoTableReg==0 );
- assert( u.bh.pC->pCursor!=0 );
- u.bh.pCrsr = u.bh.pC->pCursor;
- assert( sqlite3BtreeCursorIsValid(u.bh.pCrsr) );
+ u.bl.pC = p->apCsr[pOp->p1];
+ assert( u.bl.pC->isSorter==0 );
+ assert( u.bl.pC->isTable || pOp->opcode!=OP_RowData );
+ assert( u.bl.pC->isIndex || pOp->opcode==OP_RowData );
+ assert( u.bl.pC!=0 );
+ assert( u.bl.pC->nullRow==0 );
+ assert( u.bl.pC->pseudoTableReg==0 );
+ assert( !u.bl.pC->isSorter );
+ assert( u.bl.pC->pCursor!=0 );
+ u.bl.pCrsr = u.bl.pC->pCursor;
+ assert( sqlite3BtreeCursorIsValid(u.bl.pCrsr) );
/* The OP_RowKey and OP_RowData opcodes always follow OP_NotExists or
** OP_Rewind/Op_Next with no intervening instructions that might invalidate
** the cursor. Hence the following sqlite3VdbeCursorMoveto() call is always
** a no-op and can never fail. But we leave it in place as a safety.
*/
- assert( u.bh.pC->deferredMoveto==0 );
- rc = sqlite3VdbeCursorMoveto(u.bh.pC);
+ assert( u.bl.pC->deferredMoveto==0 );
+ rc = sqlite3VdbeCursorMoveto(u.bl.pC);
if( NEVER(rc!=SQLITE_OK) ) goto abort_due_to_error;
- if( u.bh.pC->isIndex ){
- assert( !u.bh.pC->isTable );
- rc = sqlite3BtreeKeySize(u.bh.pCrsr, &u.bh.n64);
+ if( u.bl.pC->isIndex ){
+ assert( !u.bl.pC->isTable );
+ VVA_ONLY(rc =) sqlite3BtreeKeySize(u.bl.pCrsr, &u.bl.n64);
assert( rc==SQLITE_OK ); /* True because of CursorMoveto() call above */
- if( u.bh.n64>db->aLimit[SQLITE_LIMIT_LENGTH] ){
+ if( u.bl.n64>db->aLimit[SQLITE_LIMIT_LENGTH] ){
goto too_big;
}
- u.bh.n = (u32)u.bh.n64;
+ u.bl.n = (u32)u.bl.n64;
}else{
- rc = sqlite3BtreeDataSize(u.bh.pCrsr, &u.bh.n);
+ VVA_ONLY(rc =) sqlite3BtreeDataSize(u.bl.pCrsr, &u.bl.n);
assert( rc==SQLITE_OK ); /* DataSize() cannot fail */
- if( u.bh.n>(u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){
+ if( u.bl.n>(u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){
goto too_big;
}
}
- if( sqlite3VdbeMemGrow(pOut, u.bh.n, 0) ){
+ if( sqlite3VdbeMemGrow(pOut, u.bl.n, 0) ){
goto no_mem;
}
- pOut->n = u.bh.n;
+ pOut->n = u.bl.n;
MemSetTypeFlag(pOut, MEM_Blob);
- if( u.bh.pC->isIndex ){
- rc = sqlite3BtreeKey(u.bh.pCrsr, 0, u.bh.n, pOut->z);
+ if( u.bl.pC->isIndex ){
+ rc = sqlite3BtreeKey(u.bl.pCrsr, 0, u.bl.n, pOut->z);
}else{
- rc = sqlite3BtreeData(u.bh.pCrsr, 0, u.bh.n, pOut->z);
+ rc = sqlite3BtreeData(u.bl.pCrsr, 0, u.bl.n, pOut->z);
}
pOut->enc = SQLITE_UTF8; /* In case the blob is ever cast to text */
UPDATE_MAX_BLOBSIZE(pOut);
@@ -64542,42 +69040,42 @@
** one opcode now works for both table types.
*/
case OP_Rowid: { /* out2-prerelease */
-#if 0 /* local variables moved into u.bi */
+#if 0 /* local variables moved into u.bm */
VdbeCursor *pC;
i64 v;
sqlite3_vtab *pVtab;
const sqlite3_module *pModule;
-#endif /* local variables moved into u.bi */
+#endif /* local variables moved into u.bm */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bi.pC = p->apCsr[pOp->p1];
- assert( u.bi.pC!=0 );
- assert( u.bi.pC->pseudoTableReg==0 );
- if( u.bi.pC->nullRow ){
+ u.bm.pC = p->apCsr[pOp->p1];
+ assert( u.bm.pC!=0 );
+ assert( u.bm.pC->pseudoTableReg==0 );
+ if( u.bm.pC->nullRow ){
pOut->flags = MEM_Null;
break;
- }else if( u.bi.pC->deferredMoveto ){
- u.bi.v = u.bi.pC->movetoTarget;
+ }else if( u.bm.pC->deferredMoveto ){
+ u.bm.v = u.bm.pC->movetoTarget;
#ifndef SQLITE_OMIT_VIRTUALTABLE
- }else if( u.bi.pC->pVtabCursor ){
- u.bi.pVtab = u.bi.pC->pVtabCursor->pVtab;
- u.bi.pModule = u.bi.pVtab->pModule;
- assert( u.bi.pModule->xRowid );
- rc = u.bi.pModule->xRowid(u.bi.pC->pVtabCursor, &u.bi.v);
- importVtabErrMsg(p, u.bi.pVtab);
+ }else if( u.bm.pC->pVtabCursor ){
+ u.bm.pVtab = u.bm.pC->pVtabCursor->pVtab;
+ u.bm.pModule = u.bm.pVtab->pModule;
+ assert( u.bm.pModule->xRowid );
+ rc = u.bm.pModule->xRowid(u.bm.pC->pVtabCursor, &u.bm.v);
+ importVtabErrMsg(p, u.bm.pVtab);
#endif /* SQLITE_OMIT_VIRTUALTABLE */
}else{
- assert( u.bi.pC->pCursor!=0 );
- rc = sqlite3VdbeCursorMoveto(u.bi.pC);
+ assert( u.bm.pC->pCursor!=0 );
+ rc = sqlite3VdbeCursorMoveto(u.bm.pC);
if( rc ) goto abort_due_to_error;
- if( u.bi.pC->rowidIsValid ){
- u.bi.v = u.bi.pC->lastRowid;
+ if( u.bm.pC->rowidIsValid ){
+ u.bm.v = u.bm.pC->lastRowid;
}else{
- rc = sqlite3BtreeKeySize(u.bi.pC->pCursor, &u.bi.v);
+ rc = sqlite3BtreeKeySize(u.bm.pC->pCursor, &u.bm.v);
assert( rc==SQLITE_OK ); /* Always so because of CursorMoveto() above */
}
}
- pOut->u.i = u.bi.v;
+ pOut->u.i = u.bm.v;
break;
}
@@ -64588,17 +69086,18 @@
** write a NULL.
*/
case OP_NullRow: {
-#if 0 /* local variables moved into u.bj */
+#if 0 /* local variables moved into u.bn */
VdbeCursor *pC;
-#endif /* local variables moved into u.bj */
+#endif /* local variables moved into u.bn */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bj.pC = p->apCsr[pOp->p1];
- assert( u.bj.pC!=0 );
- u.bj.pC->nullRow = 1;
- u.bj.pC->rowidIsValid = 0;
- if( u.bj.pC->pCursor ){
- sqlite3BtreeClearCursor(u.bj.pC->pCursor);
+ u.bn.pC = p->apCsr[pOp->p1];
+ assert( u.bn.pC!=0 );
+ u.bn.pC->nullRow = 1;
+ u.bn.pC->rowidIsValid = 0;
+ assert( u.bn.pC->pCursor || u.bn.pC->pVtabCursor );
+ if( u.bn.pC->pCursor ){
+ sqlite3BtreeClearCursor(u.bn.pC->pCursor);
}
break;
}
@@ -64612,26 +69111,25 @@
** to the following instruction.
*/
case OP_Last: { /* jump */
-#if 0 /* local variables moved into u.bk */
+#if 0 /* local variables moved into u.bo */
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
-#endif /* local variables moved into u.bk */
+#endif /* local variables moved into u.bo */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bk.pC = p->apCsr[pOp->p1];
- assert( u.bk.pC!=0 );
- u.bk.pCrsr = u.bk.pC->pCursor;
- if( u.bk.pCrsr==0 ){
- u.bk.res = 1;
- }else{
- rc = sqlite3BtreeLast(u.bk.pCrsr, &u.bk.res);
+ u.bo.pC = p->apCsr[pOp->p1];
+ assert( u.bo.pC!=0 );
+ u.bo.pCrsr = u.bo.pC->pCursor;
+ u.bo.res = 0;
+ if( ALWAYS(u.bo.pCrsr!=0) ){
+ rc = sqlite3BtreeLast(u.bo.pCrsr, &u.bo.res);
}
- u.bk.pC->nullRow = (u8)u.bk.res;
- u.bk.pC->deferredMoveto = 0;
- u.bk.pC->rowidIsValid = 0;
- u.bk.pC->cacheStatus = CACHE_STALE;
- if( pOp->p2>0 && u.bk.res ){
+ u.bo.pC->nullRow = (u8)u.bo.res;
+ u.bo.pC->deferredMoveto = 0;
+ u.bo.pC->rowidIsValid = 0;
+ u.bo.pC->cacheStatus = CACHE_STALE;
+ if( pOp->p2>0 && u.bo.res ){
pc = pOp->p2 - 1;
}
break;
@@ -64650,6 +69148,10 @@
** regression tests can determine whether or not the optimizer is
** correctly optimizing out sorts.
*/
+case OP_SorterSort: /* jump */
+#ifdef SQLITE_OMIT_MERGE_SORT
+ pOp->opcode = OP_Sort;
+#endif
case OP_Sort: { /* jump */
#ifdef SQLITE_TEST
sqlite3_sort_count++;
@@ -64667,32 +69169,37 @@
** to the following instruction.
*/
case OP_Rewind: { /* jump */
-#if 0 /* local variables moved into u.bl */
+#if 0 /* local variables moved into u.bp */
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
-#endif /* local variables moved into u.bl */
+#endif /* local variables moved into u.bp */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bl.pC = p->apCsr[pOp->p1];
- assert( u.bl.pC!=0 );
- u.bl.res = 1;
- if( (u.bl.pCrsr = u.bl.pC->pCursor)!=0 ){
- rc = sqlite3BtreeFirst(u.bl.pCrsr, &u.bl.res);
- u.bl.pC->atFirst = u.bl.res==0 ?1:0;
- u.bl.pC->deferredMoveto = 0;
- u.bl.pC->cacheStatus = CACHE_STALE;
- u.bl.pC->rowidIsValid = 0;
+ u.bp.pC = p->apCsr[pOp->p1];
+ assert( u.bp.pC!=0 );
+ assert( u.bp.pC->isSorter==(pOp->opcode==OP_SorterSort) );
+ u.bp.res = 1;
+ if( isSorter(u.bp.pC) ){
+ rc = sqlite3VdbeSorterRewind(db, u.bp.pC, &u.bp.res);
+ }else{
+ u.bp.pCrsr = u.bp.pC->pCursor;
+ assert( u.bp.pCrsr );
+ rc = sqlite3BtreeFirst(u.bp.pCrsr, &u.bp.res);
+ u.bp.pC->atFirst = u.bp.res==0 ?1:0;
+ u.bp.pC->deferredMoveto = 0;
+ u.bp.pC->cacheStatus = CACHE_STALE;
+ u.bp.pC->rowidIsValid = 0;
}
- u.bl.pC->nullRow = (u8)u.bl.res;
+ u.bp.pC->nullRow = (u8)u.bp.res;
assert( pOp->p2>0 && pOp->p2<p->nOp );
- if( u.bl.res ){
+ if( u.bp.res ){
pc = pOp->p2 - 1;
}
break;
}
-/* Opcode: Next P1 P2 * * P5
+/* Opcode: Next P1 P2 * P4 P5
**
** Advance cursor P1 so that it points to the next key/data pair in its
** table or index. If there are no more key/value pairs then fall through
@@ -64701,6 +69208,9 @@
**
** The P1 cursor must be for a real table, not a pseudo-table.
**
+** P4 is always of type P4_ADVANCE. The function pointer points to
+** sqlite3BtreeNext().
+**
** If P5 is positive and the jump is taken, then event counter
** number P5-1 in the prepared statement is incremented.
**
@@ -64715,49 +69225,58 @@
**
** The P1 cursor must be for a real table, not a pseudo-table.
**
+** P4 is always of type P4_ADVANCE. The function pointer points to
+** sqlite3BtreePrevious().
+**
** If P5 is positive and the jump is taken, then event counter
** number P5-1 in the prepared statement is incremented.
*/
+case OP_SorterNext: /* jump */
+#ifdef SQLITE_OMIT_MERGE_SORT
+ pOp->opcode = OP_Next;
+#endif
case OP_Prev: /* jump */
case OP_Next: { /* jump */
-#if 0 /* local variables moved into u.bm */
+#if 0 /* local variables moved into u.bq */
VdbeCursor *pC;
- BtCursor *pCrsr;
int res;
-#endif /* local variables moved into u.bm */
+#endif /* local variables moved into u.bq */
CHECK_FOR_INTERRUPT;
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
assert( pOp->p5<=ArraySize(p->aCounter) );
- u.bm.pC = p->apCsr[pOp->p1];
- if( u.bm.pC==0 ){
+ u.bq.pC = p->apCsr[pOp->p1];
+ if( u.bq.pC==0 ){
break; /* See ticket #2273 */
}
- u.bm.pCrsr = u.bm.pC->pCursor;
- if( u.bm.pCrsr==0 ){
- u.bm.pC->nullRow = 1;
- break;
+ assert( u.bq.pC->isSorter==(pOp->opcode==OP_SorterNext) );
+ if( isSorter(u.bq.pC) ){
+ assert( pOp->opcode==OP_SorterNext );
+ rc = sqlite3VdbeSorterNext(db, u.bq.pC, &u.bq.res);
+ }else{
+ u.bq.res = 1;
+ assert( u.bq.pC->deferredMoveto==0 );
+ assert( u.bq.pC->pCursor );
+ assert( pOp->opcode!=OP_Next || pOp->p4.xAdvance==sqlite3BtreeNext );
+ assert( pOp->opcode!=OP_Prev || pOp->p4.xAdvance==sqlite3BtreePrevious );
+ rc = pOp->p4.xAdvance(u.bq.pC->pCursor, &u.bq.res);
}
- u.bm.res = 1;
- assert( u.bm.pC->deferredMoveto==0 );
- rc = pOp->opcode==OP_Next ? sqlite3BtreeNext(u.bm.pCrsr, &u.bm.res) :
- sqlite3BtreePrevious(u.bm.pCrsr, &u.bm.res);
- u.bm.pC->nullRow = (u8)u.bm.res;
- u.bm.pC->cacheStatus = CACHE_STALE;
- if( u.bm.res==0 ){
+ u.bq.pC->nullRow = (u8)u.bq.res;
+ u.bq.pC->cacheStatus = CACHE_STALE;
+ if( u.bq.res==0 ){
pc = pOp->p2 - 1;
if( pOp->p5 ) p->aCounter[pOp->p5-1]++;
#ifdef SQLITE_TEST
sqlite3_search_count++;
#endif
}
- u.bm.pC->rowidIsValid = 0;
+ u.bq.pC->rowidIsValid = 0;
break;
}
/* Opcode: IdxInsert P1 P2 P3 * P5
**
-** Register P2 holds a SQL index key made using the
+** Register P2 holds an SQL index key made using the
** MakeRecord instructions. This opcode writes that key
** into the index P1. Data for the entry is nil.
**
@@ -64767,31 +69286,40 @@
** This instruction only works for indices. The equivalent instruction
** for tables is OP_Insert.
*/
+case OP_SorterInsert: /* in2 */
+#ifdef SQLITE_OMIT_MERGE_SORT
+ pOp->opcode = OP_IdxInsert;
+#endif
case OP_IdxInsert: { /* in2 */
-#if 0 /* local variables moved into u.bn */
+#if 0 /* local variables moved into u.br */
VdbeCursor *pC;
BtCursor *pCrsr;
int nKey;
const char *zKey;
-#endif /* local variables moved into u.bn */
+#endif /* local variables moved into u.br */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bn.pC = p->apCsr[pOp->p1];
- assert( u.bn.pC!=0 );
+ u.br.pC = p->apCsr[pOp->p1];
+ assert( u.br.pC!=0 );
+ assert( u.br.pC->isSorter==(pOp->opcode==OP_SorterInsert) );
pIn2 = &aMem[pOp->p2];
assert( pIn2->flags & MEM_Blob );
- u.bn.pCrsr = u.bn.pC->pCursor;
- if( ALWAYS(u.bn.pCrsr!=0) ){
- assert( u.bn.pC->isTable==0 );
+ u.br.pCrsr = u.br.pC->pCursor;
+ if( ALWAYS(u.br.pCrsr!=0) ){
+ assert( u.br.pC->isTable==0 );
rc = ExpandBlob(pIn2);
if( rc==SQLITE_OK ){
- u.bn.nKey = pIn2->n;
- u.bn.zKey = pIn2->z;
- rc = sqlite3BtreeInsert(u.bn.pCrsr, u.bn.zKey, u.bn.nKey, "", 0, 0, pOp->p3,
- ((pOp->p5 & OPFLAG_USESEEKRESULT) ? u.bn.pC->seekResult : 0)
- );
- assert( u.bn.pC->deferredMoveto==0 );
- u.bn.pC->cacheStatus = CACHE_STALE;
+ if( isSorter(u.br.pC) ){
+ rc = sqlite3VdbeSorterWrite(db, u.br.pC, pIn2);
+ }else{
+ u.br.nKey = pIn2->n;
+ u.br.zKey = pIn2->z;
+ rc = sqlite3BtreeInsert(u.br.pCrsr, u.br.zKey, u.br.nKey, "", 0, 0, pOp->p3,
+ ((pOp->p5 & OPFLAG_USESEEKRESULT) ? u.br.pC->seekResult : 0)
+ );
+ assert( u.br.pC->deferredMoveto==0 );
+ u.br.pC->cacheStatus = CACHE_STALE;
+ }
}
}
break;
@@ -64804,33 +69332,33 @@
** index opened by cursor P1.
*/
case OP_IdxDelete: {
-#if 0 /* local variables moved into u.bo */
+#if 0 /* local variables moved into u.bs */
VdbeCursor *pC;
BtCursor *pCrsr;
int res;
UnpackedRecord r;
-#endif /* local variables moved into u.bo */
+#endif /* local variables moved into u.bs */
assert( pOp->p3>0 );
assert( pOp->p2>0 && pOp->p2+pOp->p3<=p->nMem+1 );
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bo.pC = p->apCsr[pOp->p1];
- assert( u.bo.pC!=0 );
- u.bo.pCrsr = u.bo.pC->pCursor;
- if( ALWAYS(u.bo.pCrsr!=0) ){
- u.bo.r.pKeyInfo = u.bo.pC->pKeyInfo;
- u.bo.r.nField = (u16)pOp->p3;
- u.bo.r.flags = 0;
- u.bo.r.aMem = &aMem[pOp->p2];
+ u.bs.pC = p->apCsr[pOp->p1];
+ assert( u.bs.pC!=0 );
+ u.bs.pCrsr = u.bs.pC->pCursor;
+ if( ALWAYS(u.bs.pCrsr!=0) ){
+ u.bs.r.pKeyInfo = u.bs.pC->pKeyInfo;
+ u.bs.r.nField = (u16)pOp->p3;
+ u.bs.r.flags = 0;
+ u.bs.r.aMem = &aMem[pOp->p2];
#ifdef SQLITE_DEBUG
- { int i; for(i=0; i<u.bo.r.nField; i++) assert( memIsValid(&u.bo.r.aMem[i]) ); }
+ { int i; for(i=0; i<u.bs.r.nField; i++) assert( memIsValid(&u.bs.r.aMem[i]) ); }
#endif
- rc = sqlite3BtreeMovetoUnpacked(u.bo.pCrsr, &u.bo.r, 0, 0, &u.bo.res);
- if( rc==SQLITE_OK && u.bo.res==0 ){
- rc = sqlite3BtreeDelete(u.bo.pCrsr);
+ rc = sqlite3BtreeMovetoUnpacked(u.bs.pCrsr, &u.bs.r, 0, 0, &u.bs.res);
+ if( rc==SQLITE_OK && u.bs.res==0 ){
+ rc = sqlite3BtreeDelete(u.bs.pCrsr);
}
- assert( u.bo.pC->deferredMoveto==0 );
- u.bo.pC->cacheStatus = CACHE_STALE;
+ assert( u.bs.pC->deferredMoveto==0 );
+ u.bs.pC->cacheStatus = CACHE_STALE;
}
break;
}
@@ -64844,28 +69372,28 @@
** See also: Rowid, MakeRecord.
*/
case OP_IdxRowid: { /* out2-prerelease */
-#if 0 /* local variables moved into u.bp */
+#if 0 /* local variables moved into u.bt */
BtCursor *pCrsr;
VdbeCursor *pC;
i64 rowid;
-#endif /* local variables moved into u.bp */
+#endif /* local variables moved into u.bt */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bp.pC = p->apCsr[pOp->p1];
- assert( u.bp.pC!=0 );
- u.bp.pCrsr = u.bp.pC->pCursor;
+ u.bt.pC = p->apCsr[pOp->p1];
+ assert( u.bt.pC!=0 );
+ u.bt.pCrsr = u.bt.pC->pCursor;
pOut->flags = MEM_Null;
- if( ALWAYS(u.bp.pCrsr!=0) ){
- rc = sqlite3VdbeCursorMoveto(u.bp.pC);
+ if( ALWAYS(u.bt.pCrsr!=0) ){
+ rc = sqlite3VdbeCursorMoveto(u.bt.pC);
if( NEVER(rc) ) goto abort_due_to_error;
- assert( u.bp.pC->deferredMoveto==0 );
- assert( u.bp.pC->isTable==0 );
- if( !u.bp.pC->nullRow ){
- rc = sqlite3VdbeIdxRowid(db, u.bp.pCrsr, &u.bp.rowid);
+ assert( u.bt.pC->deferredMoveto==0 );
+ assert( u.bt.pC->isTable==0 );
+ if( !u.bt.pC->nullRow ){
+ rc = sqlite3VdbeIdxRowid(db, u.bt.pCrsr, &u.bt.rowid);
if( rc!=SQLITE_OK ){
goto abort_due_to_error;
}
- pOut->u.i = u.bp.rowid;
+ pOut->u.i = u.bt.rowid;
pOut->flags = MEM_Int;
}
}
@@ -64900,39 +69428,39 @@
*/
case OP_IdxLT: /* jump */
case OP_IdxGE: { /* jump */
-#if 0 /* local variables moved into u.bq */
+#if 0 /* local variables moved into u.bu */
VdbeCursor *pC;
int res;
UnpackedRecord r;
-#endif /* local variables moved into u.bq */
+#endif /* local variables moved into u.bu */
assert( pOp->p1>=0 && pOp->p1<p->nCursor );
- u.bq.pC = p->apCsr[pOp->p1];
- assert( u.bq.pC!=0 );
- assert( u.bq.pC->isOrdered );
- if( ALWAYS(u.bq.pC->pCursor!=0) ){
- assert( u.bq.pC->deferredMoveto==0 );
+ u.bu.pC = p->apCsr[pOp->p1];
+ assert( u.bu.pC!=0 );
+ assert( u.bu.pC->isOrdered );
+ if( ALWAYS(u.bu.pC->pCursor!=0) ){
+ assert( u.bu.pC->deferredMoveto==0 );
assert( pOp->p5==0 || pOp->p5==1 );
assert( pOp->p4type==P4_INT32 );
- u.bq.r.pKeyInfo = u.bq.pC->pKeyInfo;
- u.bq.r.nField = (u16)pOp->p4.i;
+ u.bu.r.pKeyInfo = u.bu.pC->pKeyInfo;
+ u.bu.r.nField = (u16)pOp->p4.i;
if( pOp->p5 ){
- u.bq.r.flags = UNPACKED_INCRKEY | UNPACKED_IGNORE_ROWID;
+ u.bu.r.flags = UNPACKED_INCRKEY | UNPACKED_PREFIX_MATCH;
}else{
- u.bq.r.flags = UNPACKED_IGNORE_ROWID;
+ u.bu.r.flags = UNPACKED_PREFIX_MATCH;
}
- u.bq.r.aMem = &aMem[pOp->p3];
+ u.bu.r.aMem = &aMem[pOp->p3];
#ifdef SQLITE_DEBUG
- { int i; for(i=0; i<u.bq.r.nField; i++) assert( memIsValid(&u.bq.r.aMem[i]) ); }
+ { int i; for(i=0; i<u.bu.r.nField; i++) assert( memIsValid(&u.bu.r.aMem[i]) ); }
#endif
- rc = sqlite3VdbeIdxKeyCompare(u.bq.pC, &u.bq.r, &u.bq.res);
+ rc = sqlite3VdbeIdxKeyCompare(u.bu.pC, &u.bu.r, &u.bu.res);
if( pOp->opcode==OP_IdxLT ){
- u.bq.res = -u.bq.res;
+ u.bu.res = -u.bu.res;
}else{
assert( pOp->opcode==OP_IdxGE );
- u.bq.res++;
+ u.bu.res++;
}
- if( u.bq.res>0 ){
+ if( u.bu.res>0 ){
pc = pOp->p2 - 1 ;
}
}
@@ -64960,37 +69488,39 @@
** See also: Clear
*/
case OP_Destroy: { /* out2-prerelease */
-#if 0 /* local variables moved into u.br */
+#if 0 /* local variables moved into u.bv */
int iMoved;
int iCnt;
Vdbe *pVdbe;
int iDb;
-#endif /* local variables moved into u.br */
+#endif /* local variables moved into u.bv */
#ifndef SQLITE_OMIT_VIRTUALTABLE
- u.br.iCnt = 0;
- for(u.br.pVdbe=db->pVdbe; u.br.pVdbe; u.br.pVdbe = u.br.pVdbe->pNext){
- if( u.br.pVdbe->magic==VDBE_MAGIC_RUN && u.br.pVdbe->inVtabMethod<2 && u.br.pVdbe->pc>=0 ){
- u.br.iCnt++;
+ u.bv.iCnt = 0;
+ for(u.bv.pVdbe=db->pVdbe; u.bv.pVdbe; u.bv.pVdbe = u.bv.pVdbe->pNext){
+ if( u.bv.pVdbe->magic==VDBE_MAGIC_RUN && u.bv.pVdbe->inVtabMethod<2 && u.bv.pVdbe->pc>=0 ){
+ u.bv.iCnt++;
}
}
#else
- u.br.iCnt = db->activeVdbeCnt;
+ u.bv.iCnt = db->activeVdbeCnt;
#endif
pOut->flags = MEM_Null;
- if( u.br.iCnt>1 ){
+ if( u.bv.iCnt>1 ){
rc = SQLITE_LOCKED;
p->errorAction = OE_Abort;
}else{
- u.br.iDb = pOp->p3;
- assert( u.br.iCnt==1 );
- assert( (p->btreeMask & (1<<u.br.iDb))!=0 );
- rc = sqlite3BtreeDropTable(db->aDb[u.br.iDb].pBt, pOp->p1, &u.br.iMoved);
+ u.bv.iDb = pOp->p3;
+ assert( u.bv.iCnt==1 );
+ assert( (p->btreeMask & (((yDbMask)1)<<u.bv.iDb))!=0 );
+ rc = sqlite3BtreeDropTable(db->aDb[u.bv.iDb].pBt, pOp->p1, &u.bv.iMoved);
pOut->flags = MEM_Int;
- pOut->u.i = u.br.iMoved;
+ pOut->u.i = u.bv.iMoved;
#ifndef SQLITE_OMIT_AUTOVACUUM
- if( rc==SQLITE_OK && u.br.iMoved!=0 ){
- sqlite3RootPageMoved(&db->aDb[u.br.iDb], u.br.iMoved, pOp->p1);
- resetSchemaOnFault = 1;
+ if( rc==SQLITE_OK && u.bv.iMoved!=0 ){
+ sqlite3RootPageMoved(db, u.bv.iDb, u.bv.iMoved, pOp->p1);
+ /* All OP_Destroy operations occur on the same btree */
+ assert( resetSchemaOnFault==0 || resetSchemaOnFault==u.bv.iDb+1 );
+ resetSchemaOnFault = u.bv.iDb+1;
}
#endif
}
@@ -65016,21 +69546,21 @@
** See also: Destroy
*/
case OP_Clear: {
-#if 0 /* local variables moved into u.bs */
+#if 0 /* local variables moved into u.bw */
int nChange;
-#endif /* local variables moved into u.bs */
+#endif /* local variables moved into u.bw */
- u.bs.nChange = 0;
- assert( (p->btreeMask & (1<<pOp->p2))!=0 );
+ u.bw.nChange = 0;
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p2))!=0 );
rc = sqlite3BtreeClearTable(
- db->aDb[pOp->p2].pBt, pOp->p1, (pOp->p3 ? &u.bs.nChange : 0)
+ db->aDb[pOp->p2].pBt, pOp->p1, (pOp->p3 ? &u.bw.nChange : 0)
);
if( pOp->p3 ){
- p->nChange += u.bs.nChange;
+ p->nChange += u.bw.nChange;
if( pOp->p3>0 ){
assert( memIsValid(&aMem[pOp->p3]) );
memAboutToChange(p, &aMem[pOp->p3]);
- aMem[pOp->p3].u.i += u.bs.nChange;
+ aMem[pOp->p3].u.i += u.bw.nChange;
}
}
break;
@@ -65060,96 +69590,78 @@
*/
case OP_CreateIndex: /* out2-prerelease */
case OP_CreateTable: { /* out2-prerelease */
-#if 0 /* local variables moved into u.bt */
+#if 0 /* local variables moved into u.bx */
int pgno;
int flags;
Db *pDb;
-#endif /* local variables moved into u.bt */
+#endif /* local variables moved into u.bx */
- u.bt.pgno = 0;
+ u.bx.pgno = 0;
assert( pOp->p1>=0 && pOp->p1<db->nDb );
- assert( (p->btreeMask & (1<<pOp->p1))!=0 );
- u.bt.pDb = &db->aDb[pOp->p1];
- assert( u.bt.pDb->pBt!=0 );
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
+ u.bx.pDb = &db->aDb[pOp->p1];
+ assert( u.bx.pDb->pBt!=0 );
if( pOp->opcode==OP_CreateTable ){
- /* u.bt.flags = BTREE_INTKEY; */
- u.bt.flags = BTREE_INTKEY;
+ /* u.bx.flags = BTREE_INTKEY; */
+ u.bx.flags = BTREE_INTKEY;
}else{
- u.bt.flags = BTREE_BLOBKEY;
+ u.bx.flags = BTREE_BLOBKEY;
}
- rc = sqlite3BtreeCreateTable(u.bt.pDb->pBt, &u.bt.pgno, u.bt.flags);
- pOut->u.i = u.bt.pgno;
+ rc = sqlite3BtreeCreateTable(u.bx.pDb->pBt, &u.bx.pgno, u.bx.flags);
+ pOut->u.i = u.bx.pgno;
break;
}
-/* Opcode: ParseSchema P1 P2 * P4 *
+/* Opcode: ParseSchema P1 * * P4 *
**
** Read and parse all entries from the SQLITE_MASTER table of database P1
-** that match the WHERE clause P4. P2 is the "force" flag. Always do
-** the parsing if P2 is true. If P2 is false, then this routine is a
-** no-op if the schema is not currently loaded. In other words, if P2
-** is false, the SQLITE_MASTER table is only parsed if the rest of the
-** schema is already loaded into the symbol table.
+** that match the WHERE clause P4.
**
** This opcode invokes the parser to create a new virtual machine,
** then runs the new virtual machine. It is thus a re-entrant opcode.
*/
case OP_ParseSchema: {
-#if 0 /* local variables moved into u.bu */
+#if 0 /* local variables moved into u.by */
int iDb;
const char *zMaster;
char *zSql;
InitData initData;
-#endif /* local variables moved into u.bu */
+#endif /* local variables moved into u.by */
- u.bu.iDb = pOp->p1;
- assert( u.bu.iDb>=0 && u.bu.iDb<db->nDb );
-
- /* If pOp->p2 is 0, then this opcode is being executed to read a
- ** single row, for example the row corresponding to a new index
- ** created by this VDBE, from the sqlite_master table. It only
- ** does this if the corresponding in-memory schema is currently
- ** loaded. Otherwise, the new index definition can be loaded along
- ** with the rest of the schema when it is required.
- **
- ** Although the mutex on the BtShared object that corresponds to
- ** database u.bu.iDb (the database containing the sqlite_master table
- ** read by this instruction) is currently held, it is necessary to
- ** obtain the mutexes on all attached databases before checking if
- ** the schema of u.bu.iDb is loaded. This is because, at the start of
- ** the sqlite3_exec() call below, SQLite will invoke
- ** sqlite3BtreeEnterAll(). If all mutexes are not already held, the
- ** u.bu.iDb mutex may be temporarily released to avoid deadlock. If
- ** this happens, then some other thread may delete the in-memory
- ** schema of database u.bu.iDb before the SQL statement runs. The schema
- ** will not be reloaded becuase the db->init.busy flag is set. This
- ** can result in a "no such table: sqlite_master" or "malformed
- ** database schema" error being returned to the user.
+ /* Any prepared statement that invokes this opcode will hold mutexes
+ ** on every btree. This is a prerequisite for invoking
+ ** sqlite3InitCallback().
*/
- assert( sqlite3BtreeHoldsMutex(db->aDb[u.bu.iDb].pBt) );
- sqlite3BtreeEnterAll(db);
- if( pOp->p2 || DbHasProperty(db, u.bu.iDb, DB_SchemaLoaded) ){
- u.bu.zMaster = SCHEMA_TABLE(u.bu.iDb);
- u.bu.initData.db = db;
- u.bu.initData.iDb = pOp->p1;
- u.bu.initData.pzErrMsg = &p->zErrMsg;
- u.bu.zSql = sqlite3MPrintf(db,
+#ifdef SQLITE_DEBUG
+ for(u.by.iDb=0; u.by.iDb<db->nDb; u.by.iDb++){
+ assert( u.by.iDb==1 || sqlite3BtreeHoldsMutex(db->aDb[u.by.iDb].pBt) );
+ }
+#endif
+
+ u.by.iDb = pOp->p1;
+ assert( u.by.iDb>=0 && u.by.iDb<db->nDb );
+ assert( DbHasProperty(db, u.by.iDb, DB_SchemaLoaded) );
+ /* Used to be a conditional */ {
+ u.by.zMaster = SCHEMA_TABLE(u.by.iDb);
+ u.by.initData.db = db;
+ u.by.initData.iDb = pOp->p1;
+ u.by.initData.pzErrMsg = &p->zErrMsg;
+ u.by.zSql = sqlite3MPrintf(db,
"SELECT name, rootpage, sql FROM '%q'.%s WHERE %s ORDER BY rowid",
- db->aDb[u.bu.iDb].zName, u.bu.zMaster, pOp->p4.z);
- if( u.bu.zSql==0 ){
+ db->aDb[u.by.iDb].zName, u.by.zMaster, pOp->p4.z);
+ if( u.by.zSql==0 ){
rc = SQLITE_NOMEM;
}else{
assert( db->init.busy==0 );
db->init.busy = 1;
- u.bu.initData.rc = SQLITE_OK;
+ u.by.initData.rc = SQLITE_OK;
assert( !db->mallocFailed );
- rc = sqlite3_exec(db, u.bu.zSql, sqlite3InitCallback, &u.bu.initData, 0);
- if( rc==SQLITE_OK ) rc = u.bu.initData.rc;
- sqlite3DbFree(db, u.bu.zSql);
+ rc = sqlite3_exec(db, u.by.zSql, sqlite3InitCallback, &u.by.initData, 0);
+ if( rc==SQLITE_OK ) rc = u.by.initData.rc;
+ sqlite3DbFree(db, u.by.zSql);
db->init.busy = 0;
}
}
- sqlite3BtreeLeaveAll(db);
if( rc==SQLITE_NOMEM ){
goto no_mem;
}
@@ -65229,41 +69741,41 @@
** This opcode is used to implement the integrity_check pragma.
*/
case OP_IntegrityCk: {
-#if 0 /* local variables moved into u.bv */
+#if 0 /* local variables moved into u.bz */
int nRoot; /* Number of tables to check. (Number of root pages.) */
int *aRoot; /* Array of rootpage numbers for tables to be checked */
int j; /* Loop counter */
int nErr; /* Number of errors reported */
char *z; /* Text of the error report */
Mem *pnErr; /* Register keeping track of errors remaining */
-#endif /* local variables moved into u.bv */
+#endif /* local variables moved into u.bz */
- u.bv.nRoot = pOp->p2;
- assert( u.bv.nRoot>0 );
- u.bv.aRoot = sqlite3DbMallocRaw(db, sizeof(int)*(u.bv.nRoot+1) );
- if( u.bv.aRoot==0 ) goto no_mem;
+ u.bz.nRoot = pOp->p2;
+ assert( u.bz.nRoot>0 );
+ u.bz.aRoot = sqlite3DbMallocRaw(db, sizeof(int)*(u.bz.nRoot+1) );
+ if( u.bz.aRoot==0 ) goto no_mem;
assert( pOp->p3>0 && pOp->p3<=p->nMem );
- u.bv.pnErr = &aMem[pOp->p3];
- assert( (u.bv.pnErr->flags & MEM_Int)!=0 );
- assert( (u.bv.pnErr->flags & (MEM_Str|MEM_Blob))==0 );
+ u.bz.pnErr = &aMem[pOp->p3];
+ assert( (u.bz.pnErr->flags & MEM_Int)!=0 );
+ assert( (u.bz.pnErr->flags & (MEM_Str|MEM_Blob))==0 );
pIn1 = &aMem[pOp->p1];
- for(u.bv.j=0; u.bv.j<u.bv.nRoot; u.bv.j++){
- u.bv.aRoot[u.bv.j] = (int)sqlite3VdbeIntValue(&pIn1[u.bv.j]);
+ for(u.bz.j=0; u.bz.j<u.bz.nRoot; u.bz.j++){
+ u.bz.aRoot[u.bz.j] = (int)sqlite3VdbeIntValue(&pIn1[u.bz.j]);
}
- u.bv.aRoot[u.bv.j] = 0;
+ u.bz.aRoot[u.bz.j] = 0;
assert( pOp->p5<db->nDb );
- assert( (p->btreeMask & (1<<pOp->p5))!=0 );
- u.bv.z = sqlite3BtreeIntegrityCheck(db->aDb[pOp->p5].pBt, u.bv.aRoot, u.bv.nRoot,
- (int)u.bv.pnErr->u.i, &u.bv.nErr);
- sqlite3DbFree(db, u.bv.aRoot);
- u.bv.pnErr->u.i -= u.bv.nErr;
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p5))!=0 );
+ u.bz.z = sqlite3BtreeIntegrityCheck(db->aDb[pOp->p5].pBt, u.bz.aRoot, u.bz.nRoot,
+ (int)u.bz.pnErr->u.i, &u.bz.nErr);
+ sqlite3DbFree(db, u.bz.aRoot);
+ u.bz.pnErr->u.i -= u.bz.nErr;
sqlite3VdbeMemSetNull(pIn1);
- if( u.bv.nErr==0 ){
- assert( u.bv.z==0 );
- }else if( u.bv.z==0 ){
+ if( u.bz.nErr==0 ){
+ assert( u.bz.z==0 );
+ }else if( u.bz.z==0 ){
goto no_mem;
}else{
- sqlite3VdbeMemSetStr(pIn1, u.bv.z, -1, SQLITE_UTF8, sqlite3_free);
+ sqlite3VdbeMemSetStr(pIn1, u.bz.z, -1, SQLITE_UTF8, sqlite3_free);
}
UPDATE_MAX_BLOBSIZE(pIn1);
sqlite3VdbeChangeEncoding(pIn1, encoding);
@@ -65297,20 +69809,20 @@
** unchanged and jump to instruction P2.
*/
case OP_RowSetRead: { /* jump, in1, out3 */
-#if 0 /* local variables moved into u.bw */
+#if 0 /* local variables moved into u.ca */
i64 val;
-#endif /* local variables moved into u.bw */
+#endif /* local variables moved into u.ca */
CHECK_FOR_INTERRUPT;
pIn1 = &aMem[pOp->p1];
if( (pIn1->flags & MEM_RowSet)==0
- || sqlite3RowSetNext(pIn1->u.pRowSet, &u.bw.val)==0
+ || sqlite3RowSetNext(pIn1->u.pRowSet, &u.ca.val)==0
){
/* The boolean index is empty */
sqlite3VdbeMemSetNull(pIn1);
pc = pOp->p2 - 1;
}else{
/* A value was pulled from the index */
- sqlite3VdbeMemSetInt64(&aMem[pOp->p3], u.bw.val);
+ sqlite3VdbeMemSetInt64(&aMem[pOp->p3], u.ca.val);
}
break;
}
@@ -65339,14 +69851,14 @@
** inserted as part of some other set).
*/
case OP_RowSetTest: { /* jump, in1, in3 */
-#if 0 /* local variables moved into u.bx */
+#if 0 /* local variables moved into u.cb */
int iSet;
int exists;
-#endif /* local variables moved into u.bx */
+#endif /* local variables moved into u.cb */
pIn1 = &aMem[pOp->p1];
pIn3 = &aMem[pOp->p3];
- u.bx.iSet = pOp->p4.i;
+ u.cb.iSet = pOp->p4.i;
assert( pIn3->flags&MEM_Int );
/* If there is anything other than a rowset object in memory cell P1,
@@ -65358,17 +69870,17 @@
}
assert( pOp->p4type==P4_INT32 );
- assert( u.bx.iSet==-1 || u.bx.iSet>=0 );
- if( u.bx.iSet ){
- u.bx.exists = sqlite3RowSetTest(pIn1->u.pRowSet,
- (u8)(u.bx.iSet>=0 ? u.bx.iSet & 0xf : 0xff),
+ assert( u.cb.iSet==-1 || u.cb.iSet>=0 );
+ if( u.cb.iSet ){
+ u.cb.exists = sqlite3RowSetTest(pIn1->u.pRowSet,
+ (u8)(u.cb.iSet>=0 ? u.cb.iSet & 0xf : 0xff),
pIn3->u.i);
- if( u.bx.exists ){
+ if( u.cb.exists ){
pc = pOp->p2 - 1;
break;
}
}
- if( u.bx.iSet>=0 ){
+ if( u.cb.iSet>=0 ){
sqlite3RowSetInsert(pIn1->u.pRowSet, pIn3->u.i);
}
break;
@@ -65391,7 +69903,7 @@
** P4 is a pointer to the VM containing the trigger program.
*/
case OP_Program: { /* jump */
-#if 0 /* local variables moved into u.by */
+#if 0 /* local variables moved into u.cc */
int nMem; /* Number of memory registers for sub-program */
int nByte; /* Bytes of runtime space required for sub-program */
Mem *pRt; /* Register to allocate runtime space */
@@ -65400,12 +69912,11 @@
VdbeFrame *pFrame; /* New vdbe frame to execute in */
SubProgram *pProgram; /* Sub-program to execute */
void *t; /* Token identifying trigger */
-#endif /* local variables moved into u.by */
+#endif /* local variables moved into u.cc */
- u.by.pProgram = pOp->p4.pProgram;
- u.by.pRt = &aMem[pOp->p3];
- assert( memIsValid(u.by.pRt) );
- assert( u.by.pProgram->nOp>0 );
+ u.cc.pProgram = pOp->p4.pProgram;
+ u.cc.pRt = &aMem[pOp->p3];
+ assert( u.cc.pProgram->nOp>0 );
/* If the p5 flag is clear, then recursive invocation of triggers is
** disabled for backwards compatibility (p5 is set if this sub-program
@@ -65419,9 +69930,9 @@
** single trigger all have the same value for the SubProgram.token
** variable. */
if( pOp->p5 ){
- u.by.t = u.by.pProgram->token;
- for(u.by.pFrame=p->pFrame; u.by.pFrame && u.by.pFrame->token!=u.by.t; u.by.pFrame=u.by.pFrame->pParent);
- if( u.by.pFrame ) break;
+ u.cc.t = u.cc.pProgram->token;
+ for(u.cc.pFrame=p->pFrame; u.cc.pFrame && u.cc.pFrame->token!=u.cc.t; u.cc.pFrame=u.cc.pFrame->pParent);
+ if( u.cc.pFrame ) break;
}
if( p->nFrame>=db->aLimit[SQLITE_LIMIT_TRIGGER_DEPTH] ){
@@ -65430,65 +69941,72 @@
break;
}
- /* Register u.by.pRt is used to store the memory required to save the state
+ /* Register u.cc.pRt is used to store the memory required to save the state
** of the current program, and the memory required at runtime to execute
- ** the trigger program. If this trigger has been fired before, then u.by.pRt
+ ** the trigger program. If this trigger has been fired before, then u.cc.pRt
** is already allocated. Otherwise, it must be initialized. */
- if( (u.by.pRt->flags&MEM_Frame)==0 ){
+ if( (u.cc.pRt->flags&MEM_Frame)==0 ){
/* SubProgram.nMem is set to the number of memory cells used by the
** program stored in SubProgram.aOp. As well as these, one memory
** cell is required for each cursor used by the program. Set local
- ** variable u.by.nMem (and later, VdbeFrame.nChildMem) to this value.
+ ** variable u.cc.nMem (and later, VdbeFrame.nChildMem) to this value.
*/
- u.by.nMem = u.by.pProgram->nMem + u.by.pProgram->nCsr;
- u.by.nByte = ROUND8(sizeof(VdbeFrame))
- + u.by.nMem * sizeof(Mem)
- + u.by.pProgram->nCsr * sizeof(VdbeCursor *);
- u.by.pFrame = sqlite3DbMallocZero(db, u.by.nByte);
- if( !u.by.pFrame ){
+ u.cc.nMem = u.cc.pProgram->nMem + u.cc.pProgram->nCsr;
+ u.cc.nByte = ROUND8(sizeof(VdbeFrame))
+ + u.cc.nMem * sizeof(Mem)
+ + u.cc.pProgram->nCsr * sizeof(VdbeCursor *)
+ + u.cc.pProgram->nOnce * sizeof(u8);
+ u.cc.pFrame = sqlite3DbMallocZero(db, u.cc.nByte);
+ if( !u.cc.pFrame ){
goto no_mem;
}
- sqlite3VdbeMemRelease(u.by.pRt);
- u.by.pRt->flags = MEM_Frame;
- u.by.pRt->u.pFrame = u.by.pFrame;
+ sqlite3VdbeMemRelease(u.cc.pRt);
+ u.cc.pRt->flags = MEM_Frame;
+ u.cc.pRt->u.pFrame = u.cc.pFrame;
- u.by.pFrame->v = p;
- u.by.pFrame->nChildMem = u.by.nMem;
- u.by.pFrame->nChildCsr = u.by.pProgram->nCsr;
- u.by.pFrame->pc = pc;
- u.by.pFrame->aMem = p->aMem;
- u.by.pFrame->nMem = p->nMem;
- u.by.pFrame->apCsr = p->apCsr;
- u.by.pFrame->nCursor = p->nCursor;
- u.by.pFrame->aOp = p->aOp;
- u.by.pFrame->nOp = p->nOp;
- u.by.pFrame->token = u.by.pProgram->token;
+ u.cc.pFrame->v = p;
+ u.cc.pFrame->nChildMem = u.cc.nMem;
+ u.cc.pFrame->nChildCsr = u.cc.pProgram->nCsr;
+ u.cc.pFrame->pc = pc;
+ u.cc.pFrame->aMem = p->aMem;
+ u.cc.pFrame->nMem = p->nMem;
+ u.cc.pFrame->apCsr = p->apCsr;
+ u.cc.pFrame->nCursor = p->nCursor;
+ u.cc.pFrame->aOp = p->aOp;
+ u.cc.pFrame->nOp = p->nOp;
+ u.cc.pFrame->token = u.cc.pProgram->token;
+ u.cc.pFrame->aOnceFlag = p->aOnceFlag;
+ u.cc.pFrame->nOnceFlag = p->nOnceFlag;
- u.by.pEnd = &VdbeFrameMem(u.by.pFrame)[u.by.pFrame->nChildMem];
- for(u.by.pMem=VdbeFrameMem(u.by.pFrame); u.by.pMem!=u.by.pEnd; u.by.pMem++){
- u.by.pMem->flags = MEM_Null;
- u.by.pMem->db = db;
+ u.cc.pEnd = &VdbeFrameMem(u.cc.pFrame)[u.cc.pFrame->nChildMem];
+ for(u.cc.pMem=VdbeFrameMem(u.cc.pFrame); u.cc.pMem!=u.cc.pEnd; u.cc.pMem++){
+ u.cc.pMem->flags = MEM_Invalid;
+ u.cc.pMem->db = db;
}
}else{
- u.by.pFrame = u.by.pRt->u.pFrame;
- assert( u.by.pProgram->nMem+u.by.pProgram->nCsr==u.by.pFrame->nChildMem );
- assert( u.by.pProgram->nCsr==u.by.pFrame->nChildCsr );
- assert( pc==u.by.pFrame->pc );
+ u.cc.pFrame = u.cc.pRt->u.pFrame;
+ assert( u.cc.pProgram->nMem+u.cc.pProgram->nCsr==u.cc.pFrame->nChildMem );
+ assert( u.cc.pProgram->nCsr==u.cc.pFrame->nChildCsr );
+ assert( pc==u.cc.pFrame->pc );
}
p->nFrame++;
- u.by.pFrame->pParent = p->pFrame;
- u.by.pFrame->lastRowid = db->lastRowid;
- u.by.pFrame->nChange = p->nChange;
+ u.cc.pFrame->pParent = p->pFrame;
+ u.cc.pFrame->lastRowid = lastRowid;
+ u.cc.pFrame->nChange = p->nChange;
p->nChange = 0;
- p->pFrame = u.by.pFrame;
- p->aMem = aMem = &VdbeFrameMem(u.by.pFrame)[-1];
- p->nMem = u.by.pFrame->nChildMem;
- p->nCursor = (u16)u.by.pFrame->nChildCsr;
+ p->pFrame = u.cc.pFrame;
+ p->aMem = aMem = &VdbeFrameMem(u.cc.pFrame)[-1];
+ p->nMem = u.cc.pFrame->nChildMem;
+ p->nCursor = (u16)u.cc.pFrame->nChildCsr;
p->apCsr = (VdbeCursor **)&aMem[p->nMem+1];
- p->aOp = aOp = u.by.pProgram->aOp;
- p->nOp = u.by.pProgram->nOp;
+ p->aOp = aOp = u.cc.pProgram->aOp;
+ p->nOp = u.cc.pProgram->nOp;
+ p->aOnceFlag = (u8 *)&p->apCsr[p->nCursor];
+ p->nOnceFlag = u.cc.pProgram->nOnce;
+ p->nOp = u.cc.pProgram->nOp;
pc = -1;
+ memset(p->aOnceFlag, 0, p->nOnceFlag);
break;
}
@@ -65506,13 +70024,13 @@
** calling OP_Program instruction.
*/
case OP_Param: { /* out2-prerelease */
-#if 0 /* local variables moved into u.bz */
+#if 0 /* local variables moved into u.cd */
VdbeFrame *pFrame;
Mem *pIn;
-#endif /* local variables moved into u.bz */
- u.bz.pFrame = p->pFrame;
- u.bz.pIn = &u.bz.pFrame->aMem[pOp->p1 + u.bz.pFrame->aOp[u.bz.pFrame->pc].p1];
- sqlite3VdbeMemShallowCopy(pOut, u.bz.pIn, MEM_Ephem);
+#endif /* local variables moved into u.cd */
+ u.cd.pFrame = p->pFrame;
+ u.cd.pIn = &u.cd.pFrame->aMem[pOp->p1 + u.cd.pFrame->aOp[u.cd.pFrame->pc].p1];
+ sqlite3VdbeMemShallowCopy(pOut, u.cd.pIn, MEM_Ephem);
break;
}
@@ -65568,22 +70086,22 @@
** an integer.
*/
case OP_MemMax: { /* in2 */
-#if 0 /* local variables moved into u.ca */
+#if 0 /* local variables moved into u.ce */
Mem *pIn1;
VdbeFrame *pFrame;
-#endif /* local variables moved into u.ca */
+#endif /* local variables moved into u.ce */
if( p->pFrame ){
- for(u.ca.pFrame=p->pFrame; u.ca.pFrame->pParent; u.ca.pFrame=u.ca.pFrame->pParent);
- u.ca.pIn1 = &u.ca.pFrame->aMem[pOp->p1];
+ for(u.ce.pFrame=p->pFrame; u.ce.pFrame->pParent; u.ce.pFrame=u.ce.pFrame->pParent);
+ u.ce.pIn1 = &u.ce.pFrame->aMem[pOp->p1];
}else{
- u.ca.pIn1 = &aMem[pOp->p1];
+ u.ce.pIn1 = &aMem[pOp->p1];
}
- assert( memIsValid(u.ca.pIn1) );
- sqlite3VdbeMemIntegerify(u.ca.pIn1);
+ assert( memIsValid(u.ce.pIn1) );
+ sqlite3VdbeMemIntegerify(u.ce.pIn1);
pIn2 = &aMem[pOp->p2];
sqlite3VdbeMemIntegerify(pIn2);
- if( u.ca.pIn1->u.i<pIn2->u.i){
- u.ca.pIn1->u.i = pIn2->u.i;
+ if( u.ce.pIn1->u.i<pIn2->u.i){
+ u.ce.pIn1->u.i = pIn2->u.i;
}
break;
}
@@ -65650,49 +70168,51 @@
** successors.
*/
case OP_AggStep: {
-#if 0 /* local variables moved into u.cb */
+#if 0 /* local variables moved into u.cf */
int n;
int i;
Mem *pMem;
Mem *pRec;
sqlite3_context ctx;
sqlite3_value **apVal;
-#endif /* local variables moved into u.cb */
+#endif /* local variables moved into u.cf */
- u.cb.n = pOp->p5;
- assert( u.cb.n>=0 );
- u.cb.pRec = &aMem[pOp->p2];
- u.cb.apVal = p->apArg;
- assert( u.cb.apVal || u.cb.n==0 );
- for(u.cb.i=0; u.cb.i<u.cb.n; u.cb.i++, u.cb.pRec++){
- assert( memIsValid(u.cb.pRec) );
- u.cb.apVal[u.cb.i] = u.cb.pRec;
- memAboutToChange(p, u.cb.pRec);
- sqlite3VdbeMemStoreType(u.cb.pRec);
+ u.cf.n = pOp->p5;
+ assert( u.cf.n>=0 );
+ u.cf.pRec = &aMem[pOp->p2];
+ u.cf.apVal = p->apArg;
+ assert( u.cf.apVal || u.cf.n==0 );
+ for(u.cf.i=0; u.cf.i<u.cf.n; u.cf.i++, u.cf.pRec++){
+ assert( memIsValid(u.cf.pRec) );
+ u.cf.apVal[u.cf.i] = u.cf.pRec;
+ memAboutToChange(p, u.cf.pRec);
+ sqlite3VdbeMemStoreType(u.cf.pRec);
}
- u.cb.ctx.pFunc = pOp->p4.pFunc;
+ u.cf.ctx.pFunc = pOp->p4.pFunc;
assert( pOp->p3>0 && pOp->p3<=p->nMem );
- u.cb.ctx.pMem = u.cb.pMem = &aMem[pOp->p3];
- u.cb.pMem->n++;
- u.cb.ctx.s.flags = MEM_Null;
- u.cb.ctx.s.z = 0;
- u.cb.ctx.s.zMalloc = 0;
- u.cb.ctx.s.xDel = 0;
- u.cb.ctx.s.db = db;
- u.cb.ctx.isError = 0;
- u.cb.ctx.pColl = 0;
- if( u.cb.ctx.pFunc->flags & SQLITE_FUNC_NEEDCOLL ){
+ u.cf.ctx.pMem = u.cf.pMem = &aMem[pOp->p3];
+ u.cf.pMem->n++;
+ u.cf.ctx.s.flags = MEM_Null;
+ u.cf.ctx.s.z = 0;
+ u.cf.ctx.s.zMalloc = 0;
+ u.cf.ctx.s.xDel = 0;
+ u.cf.ctx.s.db = db;
+ u.cf.ctx.isError = 0;
+ u.cf.ctx.pColl = 0;
+ if( u.cf.ctx.pFunc->flags & SQLITE_FUNC_NEEDCOLL ){
assert( pOp>p->aOp );
assert( pOp[-1].p4type==P4_COLLSEQ );
assert( pOp[-1].opcode==OP_CollSeq );
- u.cb.ctx.pColl = pOp[-1].p4.pColl;
+ u.cf.ctx.pColl = pOp[-1].p4.pColl;
}
- (u.cb.ctx.pFunc->xStep)(&u.cb.ctx, u.cb.n, u.cb.apVal); /* IMP: R-24505-23230 */
- if( u.cb.ctx.isError ){
- sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(&u.cb.ctx.s));
- rc = u.cb.ctx.isError;
+ (u.cf.ctx.pFunc->xStep)(&u.cf.ctx, u.cf.n, u.cf.apVal); /* IMP: R-24505-23230 */
+ if( u.cf.ctx.isError ){
+ sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(&u.cf.ctx.s));
+ rc = u.cf.ctx.isError;
}
- sqlite3VdbeMemRelease(&u.cb.ctx.s);
+
+ sqlite3VdbeMemRelease(&u.cf.ctx.s);
+
break;
}
@@ -65709,32 +70229,57 @@
** the step function was not previously called.
*/
case OP_AggFinal: {
-#if 0 /* local variables moved into u.cc */
+#if 0 /* local variables moved into u.cg */
Mem *pMem;
-#endif /* local variables moved into u.cc */
+#endif /* local variables moved into u.cg */
assert( pOp->p1>0 && pOp->p1<=p->nMem );
- u.cc.pMem = &aMem[pOp->p1];
- assert( (u.cc.pMem->flags & ~(MEM_Null|MEM_Agg))==0 );
- rc = sqlite3VdbeMemFinalize(u.cc.pMem, pOp->p4.pFunc);
+ u.cg.pMem = &aMem[pOp->p1];
+ assert( (u.cg.pMem->flags & ~(MEM_Null|MEM_Agg))==0 );
+ rc = sqlite3VdbeMemFinalize(u.cg.pMem, pOp->p4.pFunc);
if( rc ){
- sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(u.cc.pMem));
+ sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(u.cg.pMem));
}
- sqlite3VdbeChangeEncoding(u.cc.pMem, encoding);
- UPDATE_MAX_BLOBSIZE(u.cc.pMem);
- if( sqlite3VdbeMemTooBig(u.cc.pMem) ){
+ sqlite3VdbeChangeEncoding(u.cg.pMem, encoding);
+ UPDATE_MAX_BLOBSIZE(u.cg.pMem);
+ if( sqlite3VdbeMemTooBig(u.cg.pMem) ){
goto too_big;
}
break;
}
#ifndef SQLITE_OMIT_WAL
-/* Opcode: Checkpoint P1 * * * *
+/* Opcode: Checkpoint P1 P2 P3 * *
**
** Checkpoint database P1. This is a no-op if P1 is not currently in
-** WAL mode.
+** WAL mode. Parameter P2 is one of SQLITE_CHECKPOINT_PASSIVE, FULL
+** or RESTART. Write 1 or 0 into mem[P3] if the checkpoint returns
+** SQLITE_BUSY or not, respectively. Write the number of pages in the
+** WAL after the checkpoint into mem[P3+1] and the number of pages
+** in the WAL that have been checkpointed after the checkpoint
+** completes into mem[P3+2]. However on an error, mem[P3+1] and
+** mem[P3+2] are initialized to -1.
*/
case OP_Checkpoint: {
- rc = sqlite3Checkpoint(db, pOp->p1);
+#if 0 /* local variables moved into u.ch */
+ int i; /* Loop counter */
+ int aRes[3]; /* Results */
+ Mem *pMem; /* Write results here */
+#endif /* local variables moved into u.ch */
+
+ u.ch.aRes[0] = 0;
+ u.ch.aRes[1] = u.ch.aRes[2] = -1;
+ assert( pOp->p2==SQLITE_CHECKPOINT_PASSIVE
+ || pOp->p2==SQLITE_CHECKPOINT_FULL
+ || pOp->p2==SQLITE_CHECKPOINT_RESTART
+ );
+ rc = sqlite3Checkpoint(db, pOp->p1, pOp->p2, &u.ch.aRes[1], &u.ch.aRes[2]);
+ if( rc==SQLITE_BUSY ){
+ rc = SQLITE_OK;
+ u.ch.aRes[0] = 1;
+ }
+ for(u.ch.i=0, u.ch.pMem = &aMem[pOp->p3]; u.ch.i<3; u.ch.i++, u.ch.pMem++){
+ sqlite3VdbeMemSetInt64(u.ch.pMem, (i64)u.ch.aRes[u.ch.i]);
+ }
break;
};
#endif
@@ -65752,110 +70297,91 @@
** Write a string containing the final journal-mode to register P2.
*/
case OP_JournalMode: { /* out2-prerelease */
-#if 0 /* local variables moved into u.cd */
+#if 0 /* local variables moved into u.ci */
Btree *pBt; /* Btree to change journal mode of */
Pager *pPager; /* Pager associated with pBt */
int eNew; /* New journal mode */
int eOld; /* The old journal mode */
const char *zFilename; /* Name of database file for pPager */
-#endif /* local variables moved into u.cd */
+#endif /* local variables moved into u.ci */
- u.cd.eNew = pOp->p3;
- assert( u.cd.eNew==PAGER_JOURNALMODE_DELETE
- || u.cd.eNew==PAGER_JOURNALMODE_TRUNCATE
- || u.cd.eNew==PAGER_JOURNALMODE_PERSIST
- || u.cd.eNew==PAGER_JOURNALMODE_OFF
- || u.cd.eNew==PAGER_JOURNALMODE_MEMORY
- || u.cd.eNew==PAGER_JOURNALMODE_WAL
- || u.cd.eNew==PAGER_JOURNALMODE_QUERY
+ u.ci.eNew = pOp->p3;
+ assert( u.ci.eNew==PAGER_JOURNALMODE_DELETE
+ || u.ci.eNew==PAGER_JOURNALMODE_TRUNCATE
+ || u.ci.eNew==PAGER_JOURNALMODE_PERSIST
+ || u.ci.eNew==PAGER_JOURNALMODE_OFF
+ || u.ci.eNew==PAGER_JOURNALMODE_MEMORY
+ || u.ci.eNew==PAGER_JOURNALMODE_WAL
+ || u.ci.eNew==PAGER_JOURNALMODE_QUERY
);
assert( pOp->p1>=0 && pOp->p1<db->nDb );
- /* This opcode is used in two places: PRAGMA journal_mode and ATTACH.
- ** In PRAGMA journal_mode, the sqlite3VdbeUsesBtree() routine is called
- ** when the statment is prepared and so p->aMutex.nMutex>0. All mutexes
- ** are already acquired. But when used in ATTACH, sqlite3VdbeUsesBtree()
- ** is not called when the statement is prepared because it requires the
- ** iDb index of the database as a parameter, and the database has not
- ** yet been attached so that index is unavailable. We have to wait
- ** until runtime (now) to get the mutex on the newly attached database.
- ** No other mutexes are required by the ATTACH command so this is safe
- ** to do.
- */
- assert( (p->btreeMask & (1<<pOp->p1))!=0 || p->aMutex.nMutex==0 );
- if( p->aMutex.nMutex==0 ){
- /* This occurs right after ATTACH. Get a mutex on the newly ATTACHed
- ** database. */
- sqlite3VdbeUsesBtree(p, pOp->p1);
- sqlite3VdbeMutexArrayEnter(p);
- }
-
- u.cd.pBt = db->aDb[pOp->p1].pBt;
- u.cd.pPager = sqlite3BtreePager(u.cd.pBt);
- u.cd.eOld = sqlite3PagerGetJournalMode(u.cd.pPager);
- if( u.cd.eNew==PAGER_JOURNALMODE_QUERY ) u.cd.eNew = u.cd.eOld;
- if( !sqlite3PagerOkToChangeJournalMode(u.cd.pPager) ) u.cd.eNew = u.cd.eOld;
+ u.ci.pBt = db->aDb[pOp->p1].pBt;
+ u.ci.pPager = sqlite3BtreePager(u.ci.pBt);
+ u.ci.eOld = sqlite3PagerGetJournalMode(u.ci.pPager);
+ if( u.ci.eNew==PAGER_JOURNALMODE_QUERY ) u.ci.eNew = u.ci.eOld;
+ if( !sqlite3PagerOkToChangeJournalMode(u.ci.pPager) ) u.ci.eNew = u.ci.eOld;
#ifndef SQLITE_OMIT_WAL
- u.cd.zFilename = sqlite3PagerFilename(u.cd.pPager);
+ u.ci.zFilename = sqlite3PagerFilename(u.ci.pPager);
/* Do not allow a transition to journal_mode=WAL for a database
** in temporary storage or if the VFS does not support shared memory
*/
- if( u.cd.eNew==PAGER_JOURNALMODE_WAL
- && (u.cd.zFilename[0]==0 /* Temp file */
- || !sqlite3PagerWalSupported(u.cd.pPager)) /* No shared-memory support */
+ if( u.ci.eNew==PAGER_JOURNALMODE_WAL
+ && (sqlite3Strlen30(u.ci.zFilename)==0 /* Temp file */
+ || !sqlite3PagerWalSupported(u.ci.pPager)) /* No shared-memory support */
){
- u.cd.eNew = u.cd.eOld;
+ u.ci.eNew = u.ci.eOld;
}
- if( (u.cd.eNew!=u.cd.eOld)
- && (u.cd.eOld==PAGER_JOURNALMODE_WAL || u.cd.eNew==PAGER_JOURNALMODE_WAL)
+ if( (u.ci.eNew!=u.ci.eOld)
+ && (u.ci.eOld==PAGER_JOURNALMODE_WAL || u.ci.eNew==PAGER_JOURNALMODE_WAL)
){
if( !db->autoCommit || db->activeVdbeCnt>1 ){
rc = SQLITE_ERROR;
sqlite3SetString(&p->zErrMsg, db,
"cannot change %s wal mode from within a transaction",
- (u.cd.eNew==PAGER_JOURNALMODE_WAL ? "into" : "out of")
+ (u.ci.eNew==PAGER_JOURNALMODE_WAL ? "into" : "out of")
);
break;
}else{
- if( u.cd.eOld==PAGER_JOURNALMODE_WAL ){
+ if( u.ci.eOld==PAGER_JOURNALMODE_WAL ){
/* If leaving WAL mode, close the log file. If successful, the call
** to PagerCloseWal() checkpoints and deletes the write-ahead-log
** file. An EXCLUSIVE lock may still be held on the database file
** after a successful return.
*/
- rc = sqlite3PagerCloseWal(u.cd.pPager);
+ rc = sqlite3PagerCloseWal(u.ci.pPager);
if( rc==SQLITE_OK ){
- sqlite3PagerSetJournalMode(u.cd.pPager, u.cd.eNew);
+ sqlite3PagerSetJournalMode(u.ci.pPager, u.ci.eNew);
}
- }else if( u.cd.eOld==PAGER_JOURNALMODE_MEMORY ){
+ }else if( u.ci.eOld==PAGER_JOURNALMODE_MEMORY ){
/* Cannot transition directly from MEMORY to WAL. Use mode OFF
** as an intermediate */
- sqlite3PagerSetJournalMode(u.cd.pPager, PAGER_JOURNALMODE_OFF);
+ sqlite3PagerSetJournalMode(u.ci.pPager, PAGER_JOURNALMODE_OFF);
}
/* Open a transaction on the database file. Regardless of the journal
** mode, this transaction always uses a rollback journal.
*/
- assert( sqlite3BtreeIsInTrans(u.cd.pBt)==0 );
+ assert( sqlite3BtreeIsInTrans(u.ci.pBt)==0 );
if( rc==SQLITE_OK ){
- rc = sqlite3BtreeSetVersion(u.cd.pBt, (u.cd.eNew==PAGER_JOURNALMODE_WAL ? 2 : 1));
+ rc = sqlite3BtreeSetVersion(u.ci.pBt, (u.ci.eNew==PAGER_JOURNALMODE_WAL ? 2 : 1));
}
}
}
#endif /* ifndef SQLITE_OMIT_WAL */
if( rc ){
- u.cd.eNew = u.cd.eOld;
+ u.ci.eNew = u.ci.eOld;
}
- u.cd.eNew = sqlite3PagerSetJournalMode(u.cd.pPager, u.cd.eNew);
+ u.ci.eNew = sqlite3PagerSetJournalMode(u.ci.pPager, u.ci.eNew);
pOut = &aMem[pOp->p2];
pOut->flags = MEM_Str|MEM_Static|MEM_Term;
- pOut->z = (char *)sqlite3JournalModename(u.cd.eNew);
+ pOut->z = (char *)sqlite3JournalModename(u.ci.eNew);
pOut->n = sqlite3Strlen30(pOut->z);
pOut->enc = SQLITE_UTF8;
sqlite3VdbeChangeEncoding(pOut, encoding);
@@ -65884,14 +70410,14 @@
** P2. Otherwise, fall through to the next instruction.
*/
case OP_IncrVacuum: { /* jump */
-#if 0 /* local variables moved into u.ce */
+#if 0 /* local variables moved into u.cj */
Btree *pBt;
-#endif /* local variables moved into u.ce */
+#endif /* local variables moved into u.cj */
assert( pOp->p1>=0 && pOp->p1<db->nDb );
- assert( (p->btreeMask & (1<<pOp->p1))!=0 );
- u.ce.pBt = db->aDb[pOp->p1].pBt;
- rc = sqlite3BtreeIncrVacuum(u.ce.pBt);
+ assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
+ u.cj.pBt = db->aDb[pOp->p1].pBt;
+ rc = sqlite3BtreeIncrVacuum(u.cj.pBt);
if( rc==SQLITE_DONE ){
pc = pOp->p2 - 1;
rc = SQLITE_OK;
@@ -65938,7 +70464,7 @@
if( isWriteLock || 0==(db->flags&SQLITE_ReadUncommitted) ){
int p1 = pOp->p1;
assert( p1>=0 && p1<db->nDb );
- assert( (p->btreeMask & (1<<p1))!=0 );
+ assert( (p->btreeMask & (((yDbMask)1)<<p1))!=0 );
assert( isWriteLock==0 || isWriteLock==1 );
rc = sqlite3BtreeLockTable(db->aDb[p1].pBt, pOp->p2, isWriteLock);
if( (rc&0xFF)==SQLITE_LOCKED ){
@@ -65961,12 +70487,12 @@
** code will be set to SQLITE_LOCKED.
*/
case OP_VBegin: {
-#if 0 /* local variables moved into u.cf */
+#if 0 /* local variables moved into u.ck */
VTable *pVTab;
-#endif /* local variables moved into u.cf */
- u.cf.pVTab = pOp->p4.pVtab;
- rc = sqlite3VtabBegin(db, u.cf.pVTab);
- if( u.cf.pVTab ) importVtabErrMsg(p, u.cf.pVTab->pVtab);
+#endif /* local variables moved into u.ck */
+ u.ck.pVTab = pOp->p4.pVtab;
+ rc = sqlite3VtabBegin(db, u.ck.pVTab);
+ if( u.ck.pVTab ) importVtabErrMsg(p, u.ck.pVTab->pVtab);
break;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */
@@ -66005,32 +70531,32 @@
** table and stores that cursor in P1.
*/
case OP_VOpen: {
-#if 0 /* local variables moved into u.cg */
+#if 0 /* local variables moved into u.cl */
VdbeCursor *pCur;
sqlite3_vtab_cursor *pVtabCursor;
sqlite3_vtab *pVtab;
sqlite3_module *pModule;
-#endif /* local variables moved into u.cg */
+#endif /* local variables moved into u.cl */
- u.cg.pCur = 0;
- u.cg.pVtabCursor = 0;
- u.cg.pVtab = pOp->p4.pVtab->pVtab;
- u.cg.pModule = (sqlite3_module *)u.cg.pVtab->pModule;
- assert(u.cg.pVtab && u.cg.pModule);
- rc = u.cg.pModule->xOpen(u.cg.pVtab, &u.cg.pVtabCursor);
- importVtabErrMsg(p, u.cg.pVtab);
+ u.cl.pCur = 0;
+ u.cl.pVtabCursor = 0;
+ u.cl.pVtab = pOp->p4.pVtab->pVtab;
+ u.cl.pModule = (sqlite3_module *)u.cl.pVtab->pModule;
+ assert(u.cl.pVtab && u.cl.pModule);
+ rc = u.cl.pModule->xOpen(u.cl.pVtab, &u.cl.pVtabCursor);
+ importVtabErrMsg(p, u.cl.pVtab);
if( SQLITE_OK==rc ){
/* Initialize sqlite3_vtab_cursor base class */
- u.cg.pVtabCursor->pVtab = u.cg.pVtab;
+ u.cl.pVtabCursor->pVtab = u.cl.pVtab;
/* Initialise vdbe cursor object */
- u.cg.pCur = allocateCursor(p, pOp->p1, 0, -1, 0);
- if( u.cg.pCur ){
- u.cg.pCur->pVtabCursor = u.cg.pVtabCursor;
- u.cg.pCur->pModule = u.cg.pVtabCursor->pVtab->pModule;
+ u.cl.pCur = allocateCursor(p, pOp->p1, 0, -1, 0);
+ if( u.cl.pCur ){
+ u.cl.pCur->pVtabCursor = u.cl.pVtabCursor;
+ u.cl.pCur->pModule = u.cl.pVtabCursor->pVtab->pModule;
}else{
db->mallocFailed = 1;
- u.cg.pModule->xClose(u.cg.pVtabCursor);
+ u.cl.pModule->xClose(u.cl.pVtabCursor);
}
}
break;
@@ -66057,7 +70583,7 @@
** A jump is made to P2 if the result set after filtering would be empty.
*/
case OP_VFilter: { /* jump */
-#if 0 /* local variables moved into u.ch */
+#if 0 /* local variables moved into u.cm */
int nArg;
int iQuery;
const sqlite3_module *pModule;
@@ -66069,45 +70595,45 @@
int res;
int i;
Mem **apArg;
-#endif /* local variables moved into u.ch */
+#endif /* local variables moved into u.cm */
- u.ch.pQuery = &aMem[pOp->p3];
- u.ch.pArgc = &u.ch.pQuery[1];
- u.ch.pCur = p->apCsr[pOp->p1];
- assert( memIsValid(u.ch.pQuery) );
- REGISTER_TRACE(pOp->p3, u.ch.pQuery);
- assert( u.ch.pCur->pVtabCursor );
- u.ch.pVtabCursor = u.ch.pCur->pVtabCursor;
- u.ch.pVtab = u.ch.pVtabCursor->pVtab;
- u.ch.pModule = u.ch.pVtab->pModule;
+ u.cm.pQuery = &aMem[pOp->p3];
+ u.cm.pArgc = &u.cm.pQuery[1];
+ u.cm.pCur = p->apCsr[pOp->p1];
+ assert( memIsValid(u.cm.pQuery) );
+ REGISTER_TRACE(pOp->p3, u.cm.pQuery);
+ assert( u.cm.pCur->pVtabCursor );
+ u.cm.pVtabCursor = u.cm.pCur->pVtabCursor;
+ u.cm.pVtab = u.cm.pVtabCursor->pVtab;
+ u.cm.pModule = u.cm.pVtab->pModule;
/* Grab the index number and argc parameters */
- assert( (u.ch.pQuery->flags&MEM_Int)!=0 && u.ch.pArgc->flags==MEM_Int );
- u.ch.nArg = (int)u.ch.pArgc->u.i;
- u.ch.iQuery = (int)u.ch.pQuery->u.i;
+ assert( (u.cm.pQuery->flags&MEM_Int)!=0 && u.cm.pArgc->flags==MEM_Int );
+ u.cm.nArg = (int)u.cm.pArgc->u.i;
+ u.cm.iQuery = (int)u.cm.pQuery->u.i;
/* Invoke the xFilter method */
{
- u.ch.res = 0;
- u.ch.apArg = p->apArg;
- for(u.ch.i = 0; u.ch.i<u.ch.nArg; u.ch.i++){
- u.ch.apArg[u.ch.i] = &u.ch.pArgc[u.ch.i+1];
- sqlite3VdbeMemStoreType(u.ch.apArg[u.ch.i]);
+ u.cm.res = 0;
+ u.cm.apArg = p->apArg;
+ for(u.cm.i = 0; u.cm.i<u.cm.nArg; u.cm.i++){
+ u.cm.apArg[u.cm.i] = &u.cm.pArgc[u.cm.i+1];
+ sqlite3VdbeMemStoreType(u.cm.apArg[u.cm.i]);
}
p->inVtabMethod = 1;
- rc = u.ch.pModule->xFilter(u.ch.pVtabCursor, u.ch.iQuery, pOp->p4.z, u.ch.nArg, u.ch.apArg);
+ rc = u.cm.pModule->xFilter(u.cm.pVtabCursor, u.cm.iQuery, pOp->p4.z, u.cm.nArg, u.cm.apArg);
p->inVtabMethod = 0;
- importVtabErrMsg(p, u.ch.pVtab);
+ importVtabErrMsg(p, u.cm.pVtab);
if( rc==SQLITE_OK ){
- u.ch.res = u.ch.pModule->xEof(u.ch.pVtabCursor);
+ u.cm.res = u.cm.pModule->xEof(u.cm.pVtabCursor);
}
- if( u.ch.res ){
+ if( u.cm.res ){
pc = pOp->p2 - 1;
}
}
- u.ch.pCur->nullRow = 0;
+ u.cm.pCur->nullRow = 0;
break;
}
@@ -66121,51 +70647,51 @@
** P1 cursor is pointing to into register P3.
*/
case OP_VColumn: {
-#if 0 /* local variables moved into u.ci */
+#if 0 /* local variables moved into u.cn */
sqlite3_vtab *pVtab;
const sqlite3_module *pModule;
Mem *pDest;
sqlite3_context sContext;
-#endif /* local variables moved into u.ci */
+#endif /* local variables moved into u.cn */
VdbeCursor *pCur = p->apCsr[pOp->p1];
assert( pCur->pVtabCursor );
assert( pOp->p3>0 && pOp->p3<=p->nMem );
- u.ci.pDest = &aMem[pOp->p3];
- memAboutToChange(p, u.ci.pDest);
+ u.cn.pDest = &aMem[pOp->p3];
+ memAboutToChange(p, u.cn.pDest);
if( pCur->nullRow ){
- sqlite3VdbeMemSetNull(u.ci.pDest);
+ sqlite3VdbeMemSetNull(u.cn.pDest);
break;
}
- u.ci.pVtab = pCur->pVtabCursor->pVtab;
- u.ci.pModule = u.ci.pVtab->pModule;
- assert( u.ci.pModule->xColumn );
- memset(&u.ci.sContext, 0, sizeof(u.ci.sContext));
+ u.cn.pVtab = pCur->pVtabCursor->pVtab;
+ u.cn.pModule = u.cn.pVtab->pModule;
+ assert( u.cn.pModule->xColumn );
+ memset(&u.cn.sContext, 0, sizeof(u.cn.sContext));
/* The output cell may already have a buffer allocated. Move
- ** the current contents to u.ci.sContext.s so in case the user-function
+ ** the current contents to u.cn.sContext.s so in case the user-function
** can use the already allocated buffer instead of allocating a
** new one.
*/
- sqlite3VdbeMemMove(&u.ci.sContext.s, u.ci.pDest);
- MemSetTypeFlag(&u.ci.sContext.s, MEM_Null);
+ sqlite3VdbeMemMove(&u.cn.sContext.s, u.cn.pDest);
+ MemSetTypeFlag(&u.cn.sContext.s, MEM_Null);
- rc = u.ci.pModule->xColumn(pCur->pVtabCursor, &u.ci.sContext, pOp->p2);
- importVtabErrMsg(p, u.ci.pVtab);
- if( u.ci.sContext.isError ){
- rc = u.ci.sContext.isError;
+ rc = u.cn.pModule->xColumn(pCur->pVtabCursor, &u.cn.sContext, pOp->p2);
+ importVtabErrMsg(p, u.cn.pVtab);
+ if( u.cn.sContext.isError ){
+ rc = u.cn.sContext.isError;
}
/* Copy the result of the function to the P3 register. We
** do this regardless of whether or not an error occurred to ensure any
- ** dynamic allocation in u.ci.sContext.s (a Mem struct) is released.
+ ** dynamic allocation in u.cn.sContext.s (a Mem struct) is released.
*/
- sqlite3VdbeChangeEncoding(&u.ci.sContext.s, encoding);
- sqlite3VdbeMemMove(u.ci.pDest, &u.ci.sContext.s);
- REGISTER_TRACE(pOp->p3, u.ci.pDest);
- UPDATE_MAX_BLOBSIZE(u.ci.pDest);
+ sqlite3VdbeChangeEncoding(&u.cn.sContext.s, encoding);
+ sqlite3VdbeMemMove(u.cn.pDest, &u.cn.sContext.s);
+ REGISTER_TRACE(pOp->p3, u.cn.pDest);
+ UPDATE_MAX_BLOBSIZE(u.cn.pDest);
- if( sqlite3VdbeMemTooBig(u.ci.pDest) ){
+ if( sqlite3VdbeMemTooBig(u.cn.pDest) ){
goto too_big;
}
break;
@@ -66180,22 +70706,22 @@
** the end of its result set, then fall through to the next instruction.
*/
case OP_VNext: { /* jump */
-#if 0 /* local variables moved into u.cj */
+#if 0 /* local variables moved into u.co */
sqlite3_vtab *pVtab;
const sqlite3_module *pModule;
int res;
VdbeCursor *pCur;
-#endif /* local variables moved into u.cj */
+#endif /* local variables moved into u.co */
- u.cj.res = 0;
- u.cj.pCur = p->apCsr[pOp->p1];
- assert( u.cj.pCur->pVtabCursor );
- if( u.cj.pCur->nullRow ){
+ u.co.res = 0;
+ u.co.pCur = p->apCsr[pOp->p1];
+ assert( u.co.pCur->pVtabCursor );
+ if( u.co.pCur->nullRow ){
break;
}
- u.cj.pVtab = u.cj.pCur->pVtabCursor->pVtab;
- u.cj.pModule = u.cj.pVtab->pModule;
- assert( u.cj.pModule->xNext );
+ u.co.pVtab = u.co.pCur->pVtabCursor->pVtab;
+ u.co.pModule = u.co.pVtab->pModule;
+ assert( u.co.pModule->xNext );
/* Invoke the xNext() method of the module. There is no way for the
** underlying implementation to return an error if one occurs during
@@ -66204,14 +70730,14 @@
** some other method is next invoked on the save virtual table cursor.
*/
p->inVtabMethod = 1;
- rc = u.cj.pModule->xNext(u.cj.pCur->pVtabCursor);
+ rc = u.co.pModule->xNext(u.co.pCur->pVtabCursor);
p->inVtabMethod = 0;
- importVtabErrMsg(p, u.cj.pVtab);
+ importVtabErrMsg(p, u.co.pVtab);
if( rc==SQLITE_OK ){
- u.cj.res = u.cj.pModule->xEof(u.cj.pCur->pVtabCursor);
+ u.co.res = u.co.pModule->xEof(u.co.pCur->pVtabCursor);
}
- if( !u.cj.res ){
+ if( !u.co.res ){
/* If there is data, jump to P2 */
pc = pOp->p2 - 1;
}
@@ -66227,21 +70753,26 @@
** in register P1 is passed as the zName argument to the xRename method.
*/
case OP_VRename: {
-#if 0 /* local variables moved into u.ck */
+#if 0 /* local variables moved into u.cp */
sqlite3_vtab *pVtab;
Mem *pName;
-#endif /* local variables moved into u.ck */
+#endif /* local variables moved into u.cp */
- u.ck.pVtab = pOp->p4.pVtab->pVtab;
- u.ck.pName = &aMem[pOp->p1];
- assert( u.ck.pVtab->pModule->xRename );
- assert( memIsValid(u.ck.pName) );
- REGISTER_TRACE(pOp->p1, u.ck.pName);
- assert( u.ck.pName->flags & MEM_Str );
- rc = u.ck.pVtab->pModule->xRename(u.ck.pVtab, u.ck.pName->z);
- importVtabErrMsg(p, u.ck.pVtab);
- p->expired = 0;
-
+ u.cp.pVtab = pOp->p4.pVtab->pVtab;
+ u.cp.pName = &aMem[pOp->p1];
+ assert( u.cp.pVtab->pModule->xRename );
+ assert( memIsValid(u.cp.pName) );
+ REGISTER_TRACE(pOp->p1, u.cp.pName);
+ assert( u.cp.pName->flags & MEM_Str );
+ testcase( u.cp.pName->enc==SQLITE_UTF8 );
+ testcase( u.cp.pName->enc==SQLITE_UTF16BE );
+ testcase( u.cp.pName->enc==SQLITE_UTF16LE );
+ rc = sqlite3VdbeChangeEncoding(u.cp.pName, SQLITE_UTF8);
+ if( rc==SQLITE_OK ){
+ rc = u.cp.pVtab->pModule->xRename(u.cp.pVtab, u.cp.pName->z);
+ importVtabErrMsg(p, u.cp.pVtab);
+ p->expired = 0;
+ }
break;
}
#endif
@@ -66271,7 +70802,7 @@
** is set to the value of the rowid for the row just inserted.
*/
case OP_VUpdate: {
-#if 0 /* local variables moved into u.cl */
+#if 0 /* local variables moved into u.cq */
sqlite3_vtab *pVtab;
sqlite3_module *pModule;
int nArg;
@@ -66279,29 +70810,43 @@
sqlite_int64 rowid;
Mem **apArg;
Mem *pX;
-#endif /* local variables moved into u.cl */
+#endif /* local variables moved into u.cq */
- u.cl.pVtab = pOp->p4.pVtab->pVtab;
- u.cl.pModule = (sqlite3_module *)u.cl.pVtab->pModule;
- u.cl.nArg = pOp->p2;
+ assert( pOp->p2==1 || pOp->p5==OE_Fail || pOp->p5==OE_Rollback
+ || pOp->p5==OE_Abort || pOp->p5==OE_Ignore || pOp->p5==OE_Replace
+ );
+ u.cq.pVtab = pOp->p4.pVtab->pVtab;
+ u.cq.pModule = (sqlite3_module *)u.cq.pVtab->pModule;
+ u.cq.nArg = pOp->p2;
assert( pOp->p4type==P4_VTAB );
- if( ALWAYS(u.cl.pModule->xUpdate) ){
- u.cl.apArg = p->apArg;
- u.cl.pX = &aMem[pOp->p3];
- for(u.cl.i=0; u.cl.i<u.cl.nArg; u.cl.i++){
- assert( memIsValid(u.cl.pX) );
- memAboutToChange(p, u.cl.pX);
- sqlite3VdbeMemStoreType(u.cl.pX);
- u.cl.apArg[u.cl.i] = u.cl.pX;
- u.cl.pX++;
+ if( ALWAYS(u.cq.pModule->xUpdate) ){
+ u8 vtabOnConflict = db->vtabOnConflict;
+ u.cq.apArg = p->apArg;
+ u.cq.pX = &aMem[pOp->p3];
+ for(u.cq.i=0; u.cq.i<u.cq.nArg; u.cq.i++){
+ assert( memIsValid(u.cq.pX) );
+ memAboutToChange(p, u.cq.pX);
+ sqlite3VdbeMemStoreType(u.cq.pX);
+ u.cq.apArg[u.cq.i] = u.cq.pX;
+ u.cq.pX++;
}
- rc = u.cl.pModule->xUpdate(u.cl.pVtab, u.cl.nArg, u.cl.apArg, &u.cl.rowid);
- importVtabErrMsg(p, u.cl.pVtab);
+ db->vtabOnConflict = pOp->p5;
+ rc = u.cq.pModule->xUpdate(u.cq.pVtab, u.cq.nArg, u.cq.apArg, &u.cq.rowid);
+ db->vtabOnConflict = vtabOnConflict;
+ importVtabErrMsg(p, u.cq.pVtab);
if( rc==SQLITE_OK && pOp->p1 ){
- assert( u.cl.nArg>1 && u.cl.apArg[0] && (u.cl.apArg[0]->flags&MEM_Null) );
- db->lastRowid = u.cl.rowid;
+ assert( u.cq.nArg>1 && u.cq.apArg[0] && (u.cq.apArg[0]->flags&MEM_Null) );
+ db->lastRowid = lastRowid = u.cq.rowid;
}
- p->nChange++;
+ if( rc==SQLITE_CONSTRAINT && pOp->p4.pVtab->bConstraint ){
+ if( pOp->p5==OE_Ignore ){
+ rc = SQLITE_OK;
+ }else{
+ p->errorAction = ((pOp->p5==OE_Replace) ? OE_Abort : pOp->p5);
+ }
+ }else{
+ p->nChange++;
+ }
}
break;
}
@@ -66351,23 +70896,23 @@
** the UTF-8 string contained in P4 is emitted on the trace callback.
*/
case OP_Trace: {
-#if 0 /* local variables moved into u.cm */
+#if 0 /* local variables moved into u.cr */
char *zTrace;
-#endif /* local variables moved into u.cm */
+ char *z;
+#endif /* local variables moved into u.cr */
- u.cm.zTrace = (pOp->p4.z ? pOp->p4.z : p->zSql);
- if( u.cm.zTrace ){
- if( db->xTrace ){
- char *z = sqlite3VdbeExpandSql(p, u.cm.zTrace);
- db->xTrace(db->pTraceArg, z);
- sqlite3DbFree(db, z);
- }
-#ifdef SQLITE_DEBUG
- if( (db->flags & SQLITE_SqlTrace)!=0 ){
- sqlite3DebugPrintf("SQL-trace: %s\n", u.cm.zTrace);
- }
-#endif /* SQLITE_DEBUG */
+ if( db->xTrace && (u.cr.zTrace = (pOp->p4.z ? pOp->p4.z : p->zSql))!=0 ){
+ u.cr.z = sqlite3VdbeExpandSql(p, u.cr.zTrace);
+ db->xTrace(db->pTraceArg, u.cr.z);
+ sqlite3DbFree(db, u.cr.z);
}
+#ifdef SQLITE_DEBUG
+ if( (db->flags & SQLITE_SqlTrace)!=0
+ && (u.cr.zTrace = (pOp->p4.z ? pOp->p4.z : p->zSql))!=0
+ ){
+ sqlite3DebugPrintf("SQL-trace: %s\n", u.cr.zTrace);
+ }
+#endif /* SQLITE_DEBUG */
break;
}
#endif
@@ -66443,13 +70988,16 @@
sqlite3VdbeHalt(p);
if( rc==SQLITE_IOERR_NOMEM ) db->mallocFailed = 1;
rc = SQLITE_ERROR;
- if( resetSchemaOnFault ) sqlite3ResetInternalSchema(db, 0);
+ if( resetSchemaOnFault>0 ){
+ sqlite3ResetInternalSchema(db, resetSchemaOnFault-1);
+ }
/* This is the only way out of this procedure. We have to
** release the mutexes on btrees that were acquired at the
** top. */
vdbe_return:
- sqlite3BtreeMutexArrayLeave(&p->aMutex);
+ db->lastRowid = lastRowid;
+ sqlite3VdbeLeave(p);
return rc;
/* Jump to here if a string or blob larger than SQLITE_MAX_LENGTH
@@ -66758,13 +71306,14 @@
/* Configure the OP_VerifyCookie */
sqlite3VdbeChangeP1(v, 1, iDb);
sqlite3VdbeChangeP2(v, 1, pTab->pSchema->schema_cookie);
+ sqlite3VdbeChangeP3(v, 1, pTab->pSchema->iGeneration);
/* Make sure a mutex is held on the table to be accessed */
sqlite3VdbeUsesBtree(v, iDb);
/* Configure the OP_TableLock instruction */
#ifdef SQLITE_OMIT_SHARED_CACHE
- sqlite3VdbeChangeToNoop(v, 2, 1);
+ sqlite3VdbeChangeToNoop(v, 2);
#else
sqlite3VdbeChangeP1(v, 2, iDb);
sqlite3VdbeChangeP2(v, 2, pTab->tnum);
@@ -66774,7 +71323,7 @@
/* Remove either the OP_OpenWrite or OpenRead. Set the P2
** parameter of the other to pTab->tnum. */
- sqlite3VdbeChangeToNoop(v, 4 - flags, 1);
+ sqlite3VdbeChangeToNoop(v, 4 - flags);
sqlite3VdbeChangeP2(v, 3 + flags, pTab->tnum);
sqlite3VdbeChangeP3(v, 3 + flags, iDb);
@@ -66788,7 +71337,10 @@
sqlite3VdbeChangeP4(v, 3+flags, SQLITE_INT_TO_PTR(pTab->nCol+1),P4_INT32);
sqlite3VdbeChangeP2(v, 7, pTab->nCol);
if( !db->mallocFailed ){
- sqlite3VdbeMakeReady(v, 1, 1, 1, 0, 0, 0);
+ pParse->nVar = 1;
+ pParse->nMem = 1;
+ pParse->nTab = 1;
+ sqlite3VdbeMakeReady(v, pParse);
}
}
@@ -66957,6 +71509,889 @@
#endif /* #ifndef SQLITE_OMIT_INCRBLOB */
/************** End of vdbeblob.c ********************************************/
+/************** Begin file vdbesort.c ****************************************/
+/*
+** 2011 July 9
+**
+** The author disclaims copyright to this source code. In place of
+** a legal notice, here is a blessing:
+**
+** May you do good and not evil.
+** May you find forgiveness for yourself and forgive others.
+** May you share freely, never taking more than you give.
+**
+*************************************************************************
+** This file contains code for the VdbeSorter object, used in concert with
+** a VdbeCursor to sort large numbers of keys (as may be required, for
+** example, by CREATE INDEX statements on tables too large to fit in main
+** memory).
+*/
+
+
+#ifndef SQLITE_OMIT_MERGE_SORT
+
+typedef struct VdbeSorterIter VdbeSorterIter;
+typedef struct SorterRecord SorterRecord;
+
+/*
+** NOTES ON DATA STRUCTURE USED FOR N-WAY MERGES:
+**
+** As keys are added to the sorter, they are written to disk in a series
+** of sorted packed-memory-arrays (PMAs). The size of each PMA is roughly
+** the same as the cache-size allowed for temporary databases. In order
+** to allow the caller to extract keys from the sorter in sorted order,
+** all PMAs currently stored on disk must be merged together. This comment
+** describes the data structure used to do so. The structure supports
+** merging any number of arrays in a single pass with no redundant comparison
+** operations.
+**
+** The aIter[] array contains an iterator for each of the PMAs being merged.
+** An aIter[] iterator either points to a valid key or else is at EOF. For
+** the purposes of the paragraphs below, we assume that the array is actually
+** N elements in size, where N is the smallest power of 2 greater to or equal
+** to the number of iterators being merged. The extra aIter[] elements are
+** treated as if they are empty (always at EOF).
+**
+** The aTree[] array is also N elements in size. The value of N is stored in
+** the VdbeSorter.nTree variable.
+**
+** The final (N/2) elements of aTree[] contain the results of comparing
+** pairs of iterator keys together. Element i contains the result of
+** comparing aIter[2*i-N] and aIter[2*i-N+1]. Whichever key is smaller, the
+** aTree element is set to the index of it.
+**
+** For the purposes of this comparison, EOF is considered greater than any
+** other key value. If the keys are equal (only possible with two EOF
+** values), it doesn't matter which index is stored.
+**
+** The (N/4) elements of aTree[] that preceed the final (N/2) described
+** above contains the index of the smallest of each block of 4 iterators.
+** And so on. So that aTree[1] contains the index of the iterator that
+** currently points to the smallest key value. aTree[0] is unused.
+**
+** Example:
+**
+** aIter[0] -> Banana
+** aIter[1] -> Feijoa
+** aIter[2] -> Elderberry
+** aIter[3] -> Currant
+** aIter[4] -> Grapefruit
+** aIter[5] -> Apple
+** aIter[6] -> Durian
+** aIter[7] -> EOF
+**
+** aTree[] = { X, 5 0, 5 0, 3, 5, 6 }
+**
+** The current element is "Apple" (the value of the key indicated by
+** iterator 5). When the Next() operation is invoked, iterator 5 will
+** be advanced to the next key in its segment. Say the next key is
+** "Eggplant":
+**
+** aIter[5] -> Eggplant
+**
+** The contents of aTree[] are updated first by comparing the new iterator
+** 5 key to the current key of iterator 4 (still "Grapefruit"). The iterator
+** 5 value is still smaller, so aTree[6] is set to 5. And so on up the tree.
+** The value of iterator 6 - "Durian" - is now smaller than that of iterator
+** 5, so aTree[3] is set to 6. Key 0 is smaller than key 6 (Banana<Durian),
+** so the value written into element 1 of the array is 0. As follows:
+**
+** aTree[] = { X, 0 0, 6 0, 3, 5, 6 }
+**
+** In other words, each time we advance to the next sorter element, log2(N)
+** key comparison operations are required, where N is the number of segments
+** being merged (rounded up to the next power of 2).
+*/
+struct VdbeSorter {
+ int nInMemory; /* Current size of pRecord list as PMA */
+ int nTree; /* Used size of aTree/aIter (power of 2) */
+ VdbeSorterIter *aIter; /* Array of iterators to merge */
+ int *aTree; /* Current state of incremental merge */
+ i64 iWriteOff; /* Current write offset within file pTemp1 */
+ i64 iReadOff; /* Current read offset within file pTemp1 */
+ sqlite3_file *pTemp1; /* PMA file 1 */
+ int nPMA; /* Number of PMAs stored in pTemp1 */
+ SorterRecord *pRecord; /* Head of in-memory record list */
+ int mnPmaSize; /* Minimum PMA size, in bytes */
+ int mxPmaSize; /* Maximum PMA size, in bytes. 0==no limit */
+ UnpackedRecord *pUnpacked; /* Used to unpack keys */
+};
+
+/*
+** The following type is an iterator for a PMA. It caches the current key in
+** variables nKey/aKey. If the iterator is at EOF, pFile==0.
+*/
+struct VdbeSorterIter {
+ i64 iReadOff; /* Current read offset */
+ i64 iEof; /* 1 byte past EOF for this iterator */
+ sqlite3_file *pFile; /* File iterator is reading from */
+ int nAlloc; /* Bytes of space at aAlloc */
+ u8 *aAlloc; /* Allocated space */
+ int nKey; /* Number of bytes in key */
+ u8 *aKey; /* Pointer to current key */
+};
+
+/*
+** A structure to store a single record. All in-memory records are connected
+** together into a linked list headed at VdbeSorter.pRecord using the
+** SorterRecord.pNext pointer.
+*/
+struct SorterRecord {
+ void *pVal;
+ int nVal;
+ SorterRecord *pNext;
+};
+
+/* Minimum allowable value for the VdbeSorter.nWorking variable */
+#define SORTER_MIN_WORKING 10
+
+/* Maximum number of segments to merge in a single pass. */
+#define SORTER_MAX_MERGE_COUNT 16
+
+/*
+** Free all memory belonging to the VdbeSorterIter object passed as the second
+** argument. All structure fields are set to zero before returning.
+*/
+static void vdbeSorterIterZero(sqlite3 *db, VdbeSorterIter *pIter){
+ sqlite3DbFree(db, pIter->aAlloc);
+ memset(pIter, 0, sizeof(VdbeSorterIter));
+}
+
+/*
+** Advance iterator pIter to the next key in its PMA. Return SQLITE_OK if
+** no error occurs, or an SQLite error code if one does.
+*/
+static int vdbeSorterIterNext(
+ sqlite3 *db, /* Database handle (for sqlite3DbMalloc() ) */
+ VdbeSorterIter *pIter /* Iterator to advance */
+){
+ int rc; /* Return Code */
+ int nRead; /* Number of bytes read */
+ int nRec = 0; /* Size of record in bytes */
+ int iOff = 0; /* Size of serialized size varint in bytes */
+
+ assert( pIter->iEof>=pIter->iReadOff );
+ if( pIter->iEof-pIter->iReadOff>5 ){
+ nRead = 5;
+ }else{
+ nRead = (int)(pIter->iEof - pIter->iReadOff);
+ }
+ if( nRead<=0 ){
+ /* This is an EOF condition */
+ vdbeSorterIterZero(db, pIter);
+ return SQLITE_OK;
+ }
+
+ rc = sqlite3OsRead(pIter->pFile, pIter->aAlloc, nRead, pIter->iReadOff);
+ if( rc==SQLITE_OK ){
+ iOff = getVarint32(pIter->aAlloc, nRec);
+ if( (iOff+nRec)>nRead ){
+ int nRead2; /* Number of extra bytes to read */
+ if( (iOff+nRec)>pIter->nAlloc ){
+ int nNew = pIter->nAlloc*2;
+ while( (iOff+nRec)>nNew ) nNew = nNew*2;
+ pIter->aAlloc = sqlite3DbReallocOrFree(db, pIter->aAlloc, nNew);
+ if( !pIter->aAlloc ) return SQLITE_NOMEM;
+ pIter->nAlloc = nNew;
+ }
+
+ nRead2 = iOff + nRec - nRead;
+ rc = sqlite3OsRead(
+ pIter->pFile, &pIter->aAlloc[nRead], nRead2, pIter->iReadOff+nRead
+ );
+ }
+ }
+
+ assert( rc!=SQLITE_OK || nRec>0 );
+ pIter->iReadOff += iOff+nRec;
+ pIter->nKey = nRec;
+ pIter->aKey = &pIter->aAlloc[iOff];
+ return rc;
+}
+
+/*
+** Write a single varint, value iVal, to file-descriptor pFile. Return
+** SQLITE_OK if successful, or an SQLite error code if some error occurs.
+**
+** The value of *piOffset when this function is called is used as the byte
+** offset in file pFile to write to. Before returning, *piOffset is
+** incremented by the number of bytes written.
+*/
+static int vdbeSorterWriteVarint(
+ sqlite3_file *pFile, /* File to write to */
+ i64 iVal, /* Value to write as a varint */
+ i64 *piOffset /* IN/OUT: Write offset in file pFile */
+){
+ u8 aVarint[9]; /* Buffer large enough for a varint */
+ int nVarint; /* Number of used bytes in varint */
+ int rc; /* Result of write() call */
+
+ nVarint = sqlite3PutVarint(aVarint, iVal);
+ rc = sqlite3OsWrite(pFile, aVarint, nVarint, *piOffset);
+ *piOffset += nVarint;
+
+ return rc;
+}
+
+/*
+** Read a single varint from file-descriptor pFile. Return SQLITE_OK if
+** successful, or an SQLite error code if some error occurs.
+**
+** The value of *piOffset when this function is called is used as the
+** byte offset in file pFile from whence to read the varint. If successful
+** (i.e. if no IO error occurs), then *piOffset is set to the offset of
+** the first byte past the end of the varint before returning. *piVal is
+** set to the integer value read. If an error occurs, the final values of
+** both *piOffset and *piVal are undefined.
+*/
+static int vdbeSorterReadVarint(
+ sqlite3_file *pFile, /* File to read from */
+ i64 *piOffset, /* IN/OUT: Read offset in pFile */
+ i64 *piVal /* OUT: Value read from file */
+){
+ u8 aVarint[9]; /* Buffer large enough for a varint */
+ i64 iOff = *piOffset; /* Offset in file to read from */
+ int rc; /* Return code */
+
+ rc = sqlite3OsRead(pFile, aVarint, 9, iOff);
+ if( rc==SQLITE_OK ){
+ *piOffset += getVarint(aVarint, (u64 *)piVal);
+ }
+
+ return rc;
+}
+
+/*
+** Initialize iterator pIter to scan through the PMA stored in file pFile
+** starting at offset iStart and ending at offset iEof-1. This function
+** leaves the iterator pointing to the first key in the PMA (or EOF if the
+** PMA is empty).
+*/
+static int vdbeSorterIterInit(
+ sqlite3 *db, /* Database handle */
+ VdbeSorter *pSorter, /* Sorter object */
+ i64 iStart, /* Start offset in pFile */
+ VdbeSorterIter *pIter, /* Iterator to populate */
+ i64 *pnByte /* IN/OUT: Increment this value by PMA size */
+){
+ int rc;
+
+ assert( pSorter->iWriteOff>iStart );
+ assert( pIter->aAlloc==0 );
+ pIter->pFile = pSorter->pTemp1;
+ pIter->iReadOff = iStart;
+ pIter->nAlloc = 128;
+ pIter->aAlloc = (u8 *)sqlite3DbMallocRaw(db, pIter->nAlloc);
+ if( !pIter->aAlloc ){
+ rc = SQLITE_NOMEM;
+ }else{
+ i64 nByte; /* Total size of PMA in bytes */
+ rc = vdbeSorterReadVarint(pSorter->pTemp1, &pIter->iReadOff, &nByte);
+ *pnByte += nByte;
+ pIter->iEof = pIter->iReadOff + nByte;
+ }
+ if( rc==SQLITE_OK ){
+ rc = vdbeSorterIterNext(db, pIter);
+ }
+ return rc;
+}
+
+
+/*
+** Compare key1 (buffer pKey1, size nKey1 bytes) with key2 (buffer pKey2,
+** size nKey2 bytes). Argument pKeyInfo supplies the collation functions
+** used by the comparison. If an error occurs, return an SQLite error code.
+** Otherwise, return SQLITE_OK and set *pRes to a negative, zero or positive
+** value, depending on whether key1 is smaller, equal to or larger than key2.
+**
+** If the bOmitRowid argument is non-zero, assume both keys end in a rowid
+** field. For the purposes of the comparison, ignore it. Also, if bOmitRowid
+** is true and key1 contains even a single NULL value, it is considered to
+** be less than key2. Even if key2 also contains NULL values.
+**
+** If pKey2 is passed a NULL pointer, then it is assumed that the pCsr->aSpace
+** has been allocated and contains an unpacked record that is used as key2.
+*/
+static void vdbeSorterCompare(
+ VdbeCursor *pCsr, /* Cursor object (for pKeyInfo) */
+ int bOmitRowid, /* Ignore rowid field at end of keys */
+ void *pKey1, int nKey1, /* Left side of comparison */
+ void *pKey2, int nKey2, /* Right side of comparison */
+ int *pRes /* OUT: Result of comparison */
+){
+ KeyInfo *pKeyInfo = pCsr->pKeyInfo;
+ VdbeSorter *pSorter = pCsr->pSorter;
+ UnpackedRecord *r2 = pSorter->pUnpacked;
+ int i;
+
+ if( pKey2 ){
+ sqlite3VdbeRecordUnpack(pKeyInfo, nKey2, pKey2, r2);
+ }
+
+ if( bOmitRowid ){
+ r2->nField = pKeyInfo->nField;
+ assert( r2->nField>0 );
+ for(i=0; i<r2->nField; i++){
+ if( r2->aMem[i].flags & MEM_Null ){
+ *pRes = -1;
+ return;
+ }
+ }
+ r2->flags |= UNPACKED_PREFIX_MATCH;
+ }
+
+ *pRes = sqlite3VdbeRecordCompare(nKey1, pKey1, r2);
+}
+
+/*
+** This function is called to compare two iterator keys when merging
+** multiple b-tree segments. Parameter iOut is the index of the aTree[]
+** value to recalculate.
+*/
+static int vdbeSorterDoCompare(VdbeCursor *pCsr, int iOut){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ int i1;
+ int i2;
+ int iRes;
+ VdbeSorterIter *p1;
+ VdbeSorterIter *p2;
+
+ assert( iOut<pSorter->nTree && iOut>0 );
+
+ if( iOut>=(pSorter->nTree/2) ){
+ i1 = (iOut - pSorter->nTree/2) * 2;
+ i2 = i1 + 1;
+ }else{
+ i1 = pSorter->aTree[iOut*2];
+ i2 = pSorter->aTree[iOut*2+1];
+ }
+
+ p1 = &pSorter->aIter[i1];
+ p2 = &pSorter->aIter[i2];
+
+ if( p1->pFile==0 ){
+ iRes = i2;
+ }else if( p2->pFile==0 ){
+ iRes = i1;
+ }else{
+ int res;
+ assert( pCsr->pSorter->pUnpacked!=0 ); /* allocated in vdbeSorterMerge() */
+ vdbeSorterCompare(
+ pCsr, 0, p1->aKey, p1->nKey, p2->aKey, p2->nKey, &res
+ );
+ if( res<=0 ){
+ iRes = i1;
+ }else{
+ iRes = i2;
+ }
+ }
+
+ pSorter->aTree[iOut] = iRes;
+ return SQLITE_OK;
+}
+
+/*
+** Initialize the temporary index cursor just opened as a sorter cursor.
+*/
+SQLITE_PRIVATE int sqlite3VdbeSorterInit(sqlite3 *db, VdbeCursor *pCsr){
+ int pgsz; /* Page size of main database */
+ int mxCache; /* Cache size */
+ VdbeSorter *pSorter; /* The new sorter */
+ char *d; /* Dummy */
+
+ assert( pCsr->pKeyInfo && pCsr->pBt==0 );
+ pCsr->pSorter = pSorter = sqlite3DbMallocZero(db, sizeof(VdbeSorter));
+ if( pSorter==0 ){
+ return SQLITE_NOMEM;
+ }
+
+ pSorter->pUnpacked = sqlite3VdbeAllocUnpackedRecord(pCsr->pKeyInfo, 0, 0, &d);
+ if( pSorter->pUnpacked==0 ) return SQLITE_NOMEM;
+ assert( pSorter->pUnpacked==(UnpackedRecord *)d );
+
+ if( !sqlite3TempInMemory(db) ){
+ pgsz = sqlite3BtreeGetPageSize(db->aDb[0].pBt);
+ pSorter->mnPmaSize = SORTER_MIN_WORKING * pgsz;
+ mxCache = db->aDb[0].pSchema->cache_size;
+ if( mxCache<SORTER_MIN_WORKING ) mxCache = SORTER_MIN_WORKING;
+ pSorter->mxPmaSize = mxCache * pgsz;
+ }
+
+ return SQLITE_OK;
+}
+
+/*
+** Free the list of sorted records starting at pRecord.
+*/
+static void vdbeSorterRecordFree(sqlite3 *db, SorterRecord *pRecord){
+ SorterRecord *p;
+ SorterRecord *pNext;
+ for(p=pRecord; p; p=pNext){
+ pNext = p->pNext;
+ sqlite3DbFree(db, p);
+ }
+}
+
+/*
+** Free any cursor components allocated by sqlite3VdbeSorterXXX routines.
+*/
+SQLITE_PRIVATE void sqlite3VdbeSorterClose(sqlite3 *db, VdbeCursor *pCsr){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ if( pSorter ){
+ if( pSorter->aIter ){
+ int i;
+ for(i=0; i<pSorter->nTree; i++){
+ vdbeSorterIterZero(db, &pSorter->aIter[i]);
+ }
+ sqlite3DbFree(db, pSorter->aIter);
+ }
+ if( pSorter->pTemp1 ){
+ sqlite3OsCloseFree(pSorter->pTemp1);
+ }
+ vdbeSorterRecordFree(db, pSorter->pRecord);
+ sqlite3DbFree(db, pSorter->pUnpacked);
+ sqlite3DbFree(db, pSorter);
+ pCsr->pSorter = 0;
+ }
+}
+
+/*
+** Allocate space for a file-handle and open a temporary file. If successful,
+** set *ppFile to point to the malloc'd file-handle and return SQLITE_OK.
+** Otherwise, set *ppFile to 0 and return an SQLite error code.
+*/
+static int vdbeSorterOpenTempFile(sqlite3 *db, sqlite3_file **ppFile){
+ int dummy;
+ return sqlite3OsOpenMalloc(db->pVfs, 0, ppFile,
+ SQLITE_OPEN_TEMP_JOURNAL |
+ SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE |
+ SQLITE_OPEN_EXCLUSIVE | SQLITE_OPEN_DELETEONCLOSE, &dummy
+ );
+}
+
+/*
+** Merge the two sorted lists p1 and p2 into a single list.
+** Set *ppOut to the head of the new list.
+*/
+static void vdbeSorterMerge(
+ VdbeCursor *pCsr, /* For pKeyInfo */
+ SorterRecord *p1, /* First list to merge */
+ SorterRecord *p2, /* Second list to merge */
+ SorterRecord **ppOut /* OUT: Head of merged list */
+){
+ SorterRecord *pFinal = 0;
+ SorterRecord **pp = &pFinal;
+ void *pVal2 = p2 ? p2->pVal : 0;
+
+ while( p1 && p2 ){
+ int res;
+ vdbeSorterCompare(pCsr, 0, p1->pVal, p1->nVal, pVal2, p2->nVal, &res);
+ if( res<=0 ){
+ *pp = p1;
+ pp = &p1->pNext;
+ p1 = p1->pNext;
+ pVal2 = 0;
+ }else{
+ *pp = p2;
+ pp = &p2->pNext;
+ p2 = p2->pNext;
+ if( p2==0 ) break;
+ pVal2 = p2->pVal;
+ }
+ }
+ *pp = p1 ? p1 : p2;
+ *ppOut = pFinal;
+}
+
+/*
+** Sort the linked list of records headed at pCsr->pRecord. Return SQLITE_OK
+** if successful, or an SQLite error code (i.e. SQLITE_NOMEM) if an error
+** occurs.
+*/
+static int vdbeSorterSort(VdbeCursor *pCsr){
+ int i;
+ SorterRecord **aSlot;
+ SorterRecord *p;
+ VdbeSorter *pSorter = pCsr->pSorter;
+
+ aSlot = (SorterRecord **)sqlite3MallocZero(64 * sizeof(SorterRecord *));
+ if( !aSlot ){
+ return SQLITE_NOMEM;
+ }
+
+ p = pSorter->pRecord;
+ while( p ){
+ SorterRecord *pNext = p->pNext;
+ p->pNext = 0;
+ for(i=0; aSlot[i]; i++){
+ vdbeSorterMerge(pCsr, p, aSlot[i], &p);
+ aSlot[i] = 0;
+ }
+ aSlot[i] = p;
+ p = pNext;
+ }
+
+ p = 0;
+ for(i=0; i<64; i++){
+ vdbeSorterMerge(pCsr, p, aSlot[i], &p);
+ }
+ pSorter->pRecord = p;
+
+ sqlite3_free(aSlot);
+ return SQLITE_OK;
+}
+
+
+/*
+** Write the current contents of the in-memory linked-list to a PMA. Return
+** SQLITE_OK if successful, or an SQLite error code otherwise.
+**
+** The format of a PMA is:
+**
+** * A varint. This varint contains the total number of bytes of content
+** in the PMA (not including the varint itself).
+**
+** * One or more records packed end-to-end in order of ascending keys.
+** Each record consists of a varint followed by a blob of data (the
+** key). The varint is the number of bytes in the blob of data.
+*/
+static int vdbeSorterListToPMA(sqlite3 *db, VdbeCursor *pCsr){
+ int rc = SQLITE_OK; /* Return code */
+ VdbeSorter *pSorter = pCsr->pSorter;
+
+ if( pSorter->nInMemory==0 ){
+ assert( pSorter->pRecord==0 );
+ return rc;
+ }
+
+ rc = vdbeSorterSort(pCsr);
+
+ /* If the first temporary PMA file has not been opened, open it now. */
+ if( rc==SQLITE_OK && pSorter->pTemp1==0 ){
+ rc = vdbeSorterOpenTempFile(db, &pSorter->pTemp1);
+ assert( rc!=SQLITE_OK || pSorter->pTemp1 );
+ assert( pSorter->iWriteOff==0 );
+ assert( pSorter->nPMA==0 );
+ }
+
+ if( rc==SQLITE_OK ){
+ i64 iOff = pSorter->iWriteOff;
+ SorterRecord *p;
+ SorterRecord *pNext = 0;
+ static const char eightZeros[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+
+ pSorter->nPMA++;
+ rc = vdbeSorterWriteVarint(pSorter->pTemp1, pSorter->nInMemory, &iOff);
+ for(p=pSorter->pRecord; rc==SQLITE_OK && p; p=pNext){
+ pNext = p->pNext;
+ rc = vdbeSorterWriteVarint(pSorter->pTemp1, p->nVal, &iOff);
+
+ if( rc==SQLITE_OK ){
+ rc = sqlite3OsWrite(pSorter->pTemp1, p->pVal, p->nVal, iOff);
+ iOff += p->nVal;
+ }
+
+ sqlite3DbFree(db, p);
+ }
+
+ /* This assert verifies that unless an error has occurred, the size of
+ ** the PMA on disk is the same as the expected size stored in
+ ** pSorter->nInMemory. */
+ assert( rc!=SQLITE_OK || pSorter->nInMemory==(
+ iOff-pSorter->iWriteOff-sqlite3VarintLen(pSorter->nInMemory)
+ ));
+
+ pSorter->iWriteOff = iOff;
+ if( rc==SQLITE_OK ){
+ /* Terminate each file with 8 extra bytes so that from any offset
+ ** in the file we can always read 9 bytes without a SHORT_READ error */
+ rc = sqlite3OsWrite(pSorter->pTemp1, eightZeros, 8, iOff);
+ }
+ pSorter->pRecord = p;
+ }
+
+ return rc;
+}
+
+/*
+** Add a record to the sorter.
+*/
+SQLITE_PRIVATE int sqlite3VdbeSorterWrite(
+ sqlite3 *db, /* Database handle */
+ VdbeCursor *pCsr, /* Sorter cursor */
+ Mem *pVal /* Memory cell containing record */
+){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ int rc = SQLITE_OK; /* Return Code */
+ SorterRecord *pNew; /* New list element */
+
+ assert( pSorter );
+ pSorter->nInMemory += sqlite3VarintLen(pVal->n) + pVal->n;
+
+ pNew = (SorterRecord *)sqlite3DbMallocRaw(db, pVal->n + sizeof(SorterRecord));
+ if( pNew==0 ){
+ rc = SQLITE_NOMEM;
+ }else{
+ pNew->pVal = (void *)&pNew[1];
+ memcpy(pNew->pVal, pVal->z, pVal->n);
+ pNew->nVal = pVal->n;
+ pNew->pNext = pSorter->pRecord;
+ pSorter->pRecord = pNew;
+ }
+
+ /* See if the contents of the sorter should now be written out. They
+ ** are written out when either of the following are true:
+ **
+ ** * The total memory allocated for the in-memory list is greater
+ ** than (page-size * cache-size), or
+ **
+ ** * The total memory allocated for the in-memory list is greater
+ ** than (page-size * 10) and sqlite3HeapNearlyFull() returns true.
+ */
+ if( rc==SQLITE_OK && pSorter->mxPmaSize>0 && (
+ (pSorter->nInMemory>pSorter->mxPmaSize)
+ || (pSorter->nInMemory>pSorter->mnPmaSize && sqlite3HeapNearlyFull())
+ )){
+ rc = vdbeSorterListToPMA(db, pCsr);
+ pSorter->nInMemory = 0;
+ }
+
+ return rc;
+}
+
+/*
+** Helper function for sqlite3VdbeSorterRewind().
+*/
+static int vdbeSorterInitMerge(
+ sqlite3 *db, /* Database handle */
+ VdbeCursor *pCsr, /* Cursor handle for this sorter */
+ i64 *pnByte /* Sum of bytes in all opened PMAs */
+){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ int rc = SQLITE_OK; /* Return code */
+ int i; /* Used to iterator through aIter[] */
+ i64 nByte = 0; /* Total bytes in all opened PMAs */
+
+ /* Initialize the iterators. */
+ for(i=0; i<SORTER_MAX_MERGE_COUNT; i++){
+ VdbeSorterIter *pIter = &pSorter->aIter[i];
+ rc = vdbeSorterIterInit(db, pSorter, pSorter->iReadOff, pIter, &nByte);
+ pSorter->iReadOff = pIter->iEof;
+ assert( rc!=SQLITE_OK || pSorter->iReadOff<=pSorter->iWriteOff );
+ if( rc!=SQLITE_OK || pSorter->iReadOff>=pSorter->iWriteOff ) break;
+ }
+
+ /* Initialize the aTree[] array. */
+ for(i=pSorter->nTree-1; rc==SQLITE_OK && i>0; i--){
+ rc = vdbeSorterDoCompare(pCsr, i);
+ }
+
+ *pnByte = nByte;
+ return rc;
+}
+
+/*
+** Once the sorter has been populated, this function is called to prepare
+** for iterating through its contents in sorted order.
+*/
+SQLITE_PRIVATE int sqlite3VdbeSorterRewind(sqlite3 *db, VdbeCursor *pCsr, int *pbEof){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ int rc; /* Return code */
+ sqlite3_file *pTemp2 = 0; /* Second temp file to use */
+ i64 iWrite2 = 0; /* Write offset for pTemp2 */
+ int nIter; /* Number of iterators used */
+ int nByte; /* Bytes of space required for aIter/aTree */
+ int N = 2; /* Power of 2 >= nIter */
+
+ assert( pSorter );
+
+ /* If no data has been written to disk, then do not do so now. Instead,
+ ** sort the VdbeSorter.pRecord list. The vdbe layer will read data directly
+ ** from the in-memory list. */
+ if( pSorter->nPMA==0 ){
+ *pbEof = !pSorter->pRecord;
+ assert( pSorter->aTree==0 );
+ return vdbeSorterSort(pCsr);
+ }
+
+ /* Write the current b-tree to a PMA. Close the b-tree cursor. */
+ rc = vdbeSorterListToPMA(db, pCsr);
+ if( rc!=SQLITE_OK ) return rc;
+
+ /* Allocate space for aIter[] and aTree[]. */
+ nIter = pSorter->nPMA;
+ if( nIter>SORTER_MAX_MERGE_COUNT ) nIter = SORTER_MAX_MERGE_COUNT;
+ assert( nIter>0 );
+ while( N<nIter ) N += N;
+ nByte = N * (sizeof(int) + sizeof(VdbeSorterIter));
+ pSorter->aIter = (VdbeSorterIter *)sqlite3DbMallocZero(db, nByte);
+ if( !pSorter->aIter ) return SQLITE_NOMEM;
+ pSorter->aTree = (int *)&pSorter->aIter[N];
+ pSorter->nTree = N;
+
+ do {
+ int iNew; /* Index of new, merged, PMA */
+
+ for(iNew=0;
+ rc==SQLITE_OK && iNew*SORTER_MAX_MERGE_COUNT<pSorter->nPMA;
+ iNew++
+ ){
+ i64 nWrite; /* Number of bytes in new PMA */
+
+ /* If there are SORTER_MAX_MERGE_COUNT or less PMAs in file pTemp1,
+ ** initialize an iterator for each of them and break out of the loop.
+ ** These iterators will be incrementally merged as the VDBE layer calls
+ ** sqlite3VdbeSorterNext().
+ **
+ ** Otherwise, if pTemp1 contains more than SORTER_MAX_MERGE_COUNT PMAs,
+ ** initialize interators for SORTER_MAX_MERGE_COUNT of them. These PMAs
+ ** are merged into a single PMA that is written to file pTemp2.
+ */
+ rc = vdbeSorterInitMerge(db, pCsr, &nWrite);
+ assert( rc!=SQLITE_OK || pSorter->aIter[ pSorter->aTree[1] ].pFile );
+ if( rc!=SQLITE_OK || pSorter->nPMA<=SORTER_MAX_MERGE_COUNT ){
+ break;
+ }
+
+ /* Open the second temp file, if it is not already open. */
+ if( pTemp2==0 ){
+ assert( iWrite2==0 );
+ rc = vdbeSorterOpenTempFile(db, &pTemp2);
+ }
+
+ if( rc==SQLITE_OK ){
+ rc = vdbeSorterWriteVarint(pTemp2, nWrite, &iWrite2);
+ }
+
+ if( rc==SQLITE_OK ){
+ int bEof = 0;
+ while( rc==SQLITE_OK && bEof==0 ){
+ int nToWrite;
+ VdbeSorterIter *pIter = &pSorter->aIter[ pSorter->aTree[1] ];
+ assert( pIter->pFile );
+ nToWrite = pIter->nKey + sqlite3VarintLen(pIter->nKey);
+ rc = sqlite3OsWrite(pTemp2, pIter->aAlloc, nToWrite, iWrite2);
+ iWrite2 += nToWrite;
+ if( rc==SQLITE_OK ){
+ rc = sqlite3VdbeSorterNext(db, pCsr, &bEof);
+ }
+ }
+ }
+ }
+
+ if( pSorter->nPMA<=SORTER_MAX_MERGE_COUNT ){
+ break;
+ }else{
+ sqlite3_file *pTmp = pSorter->pTemp1;
+ pSorter->nPMA = iNew;
+ pSorter->pTemp1 = pTemp2;
+ pTemp2 = pTmp;
+ pSorter->iWriteOff = iWrite2;
+ pSorter->iReadOff = 0;
+ iWrite2 = 0;
+ }
+ }while( rc==SQLITE_OK );
+
+ if( pTemp2 ){
+ sqlite3OsCloseFree(pTemp2);
+ }
+ *pbEof = (pSorter->aIter[pSorter->aTree[1]].pFile==0);
+ return rc;
+}
+
+/*
+** Advance to the next element in the sorter.
+*/
+SQLITE_PRIVATE int sqlite3VdbeSorterNext(sqlite3 *db, VdbeCursor *pCsr, int *pbEof){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ int rc; /* Return code */
+
+ if( pSorter->aTree ){
+ int iPrev = pSorter->aTree[1];/* Index of iterator to advance */
+ int i; /* Index of aTree[] to recalculate */
+
+ rc = vdbeSorterIterNext(db, &pSorter->aIter[iPrev]);
+ for(i=(pSorter->nTree+iPrev)/2; rc==SQLITE_OK && i>0; i=i/2){
+ rc = vdbeSorterDoCompare(pCsr, i);
+ }
+
+ *pbEof = (pSorter->aIter[pSorter->aTree[1]].pFile==0);
+ }else{
+ SorterRecord *pFree = pSorter->pRecord;
+ pSorter->pRecord = pFree->pNext;
+ pFree->pNext = 0;
+ vdbeSorterRecordFree(db, pFree);
+ *pbEof = !pSorter->pRecord;
+ rc = SQLITE_OK;
+ }
+ return rc;
+}
+
+/*
+** Return a pointer to a buffer owned by the sorter that contains the
+** current key.
+*/
+static void *vdbeSorterRowkey(
+ VdbeSorter *pSorter, /* Sorter object */
+ int *pnKey /* OUT: Size of current key in bytes */
+){
+ void *pKey;
+ if( pSorter->aTree ){
+ VdbeSorterIter *pIter;
+ pIter = &pSorter->aIter[ pSorter->aTree[1] ];
+ *pnKey = pIter->nKey;
+ pKey = pIter->aKey;
+ }else{
+ *pnKey = pSorter->pRecord->nVal;
+ pKey = pSorter->pRecord->pVal;
+ }
+ return pKey;
+}
+
+/*
+** Copy the current sorter key into the memory cell pOut.
+*/
+SQLITE_PRIVATE int sqlite3VdbeSorterRowkey(VdbeCursor *pCsr, Mem *pOut){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ void *pKey; int nKey; /* Sorter key to copy into pOut */
+
+ pKey = vdbeSorterRowkey(pSorter, &nKey);
+ if( sqlite3VdbeMemGrow(pOut, nKey, 0) ){
+ return SQLITE_NOMEM;
+ }
+ pOut->n = nKey;
+ MemSetTypeFlag(pOut, MEM_Blob);
+ memcpy(pOut->z, pKey, nKey);
+
+ return SQLITE_OK;
+}
+
+/*
+** Compare the key in memory cell pVal with the key that the sorter cursor
+** passed as the first argument currently points to. For the purposes of
+** the comparison, ignore the rowid field at the end of each record.
+**
+** If an error occurs, return an SQLite error code (i.e. SQLITE_NOMEM).
+** Otherwise, set *pRes to a negative, zero or positive value if the
+** key in pVal is smaller than, equal to or larger than the current sorter
+** key.
+*/
+SQLITE_PRIVATE int sqlite3VdbeSorterCompare(
+ VdbeCursor *pCsr, /* Sorter cursor */
+ Mem *pVal, /* Value to compare to current sorter key */
+ int *pRes /* OUT: Result of comparison */
+){
+ VdbeSorter *pSorter = pCsr->pSorter;
+ void *pKey; int nKey; /* Sorter key to compare pVal with */
+
+ pKey = vdbeSorterRowkey(pSorter, &nKey);
+ vdbeSorterCompare(pCsr, 1, pVal->z, pVal->n, pKey, nKey, pRes);
+ return SQLITE_OK;
+}
+
+#endif /* #ifndef SQLITE_OMIT_MERGE_SORT */
+
+/************** End of vdbesort.c ********************************************/
/************** Begin file journal.c *****************************************/
/*
** 2007 August 22
@@ -67473,6 +72908,8 @@
** This file contains routines used for walking the parser tree for
** an SQL statement.
*/
+/* #include <stdlib.h> */
+/* #include <string.h> */
/*
@@ -67611,6 +73048,8 @@
** resolve all identifiers by associating them with a particular
** table and column.
*/
+/* #include <stdlib.h> */
+/* #include <string.h> */
/*
** Turn the pExpr expression into an alias for the iCol-th column of the
@@ -67692,6 +73131,24 @@
sqlite3DbFree(db, pDup);
}
+
+/*
+** Return TRUE if the name zCol occurs anywhere in the USING clause.
+**
+** Return FALSE if the USING clause is NULL or if it does not contain
+** zCol.
+*/
+static int nameInUsingClause(IdList *pUsing, const char *zCol){
+ if( pUsing ){
+ int k;
+ for(k=0; k<pUsing->nId; k++){
+ if( sqlite3StrICmp(pUsing->a[k].zName, zCol)==0 ) return 1;
+ }
+ }
+ return 0;
+}
+
+
/*
** Given the name of a column of the form X.Y.Z or Y.Z or just Z, look up
** that name in the set of source tables in pSrcList and make the pExpr
@@ -67783,7 +73240,14 @@
}
for(j=0, pCol=pTab->aCol; j<pTab->nCol; j++, pCol++){
if( sqlite3StrICmp(pCol->zName, zCol)==0 ){
- IdList *pUsing;
+ /* If there has been exactly one prior match and this match
+ ** is for the right-hand table of a NATURAL JOIN or is in a
+ ** USING clause, then skip this match.
+ */
+ if( cnt==1 ){
+ if( pItem->jointype & JT_NATURAL ) continue;
+ if( nameInUsingClause(pItem->pUsing, zCol) ) continue;
+ }
cnt++;
pExpr->iTable = pItem->iCursor;
pExpr->pTab = pTab;
@@ -67791,26 +73255,6 @@
pSchema = pTab->pSchema;
/* Substitute the rowid (column -1) for the INTEGER PRIMARY KEY */
pExpr->iColumn = j==pTab->iPKey ? -1 : (i16)j;
- if( i<pSrcList->nSrc-1 ){
- if( pItem[1].jointype & JT_NATURAL ){
- /* If this match occurred in the left table of a natural join,
- ** then skip the right table to avoid a duplicate match */
- pItem++;
- i++;
- }else if( (pUsing = pItem[1].pUsing)!=0 ){
- /* If this match occurs on a column that is in the USING clause
- ** of a join, skip the search of the right table of the join
- ** to avoid a duplicate match there. */
- int k;
- for(k=0; k<pUsing->nId; k++){
- if( sqlite3StrICmp(pUsing->a[k].zName, zCol)==0 ){
- pItem++;
- i++;
- break;
- }
- }
- }
- }
break;
}
}
@@ -68388,7 +73832,7 @@
pE->pColl = pColl;
pE->flags |= EP_IntValue | flags;
pE->u.iValue = iCol;
- pItem->iCol = (u16)iCol;
+ pItem->iOrderByCol = (u16)iCol;
pItem->done = 1;
}else{
moreToDo = 1;
@@ -68437,12 +73881,12 @@
pEList = pSelect->pEList;
assert( pEList!=0 ); /* sqlite3SelectNew() guarantees this */
for(i=0, pItem=pOrderBy->a; i<pOrderBy->nExpr; i++, pItem++){
- if( pItem->iCol ){
- if( pItem->iCol>pEList->nExpr ){
+ if( pItem->iOrderByCol ){
+ if( pItem->iOrderByCol>pEList->nExpr ){
resolveOutOfRangeError(pParse, zType, i+1, pEList->nExpr);
return 1;
}
- resolveAlias(pParse, pEList, pItem->iCol-1, pItem->pExpr, zType);
+ resolveAlias(pParse, pEList, pItem->iOrderByCol-1, pItem->pExpr, zType);
}
}
return 0;
@@ -68489,7 +73933,7 @@
** a copy of the iCol-th result-set column. The subsequent call to
** sqlite3ResolveOrderGroupBy() will convert the expression to a
** copy of the iCol-th result-set expression. */
- pItem->iCol = (u16)iCol;
+ pItem->iOrderByCol = (u16)iCol;
continue;
}
if( sqlite3ExprIsInteger(pE, &iCol) ){
@@ -68500,12 +73944,12 @@
resolveOutOfRangeError(pParse, zType, i+1, nResult);
return 1;
}
- pItem->iCol = (u16)iCol;
+ pItem->iOrderByCol = (u16)iCol;
continue;
}
/* Otherwise, treat the ORDER BY term as an ordinary expression */
- pItem->iCol = 0;
+ pItem->iOrderByCol = 0;
if( sqlite3ResolveExprNames(pNC, pE) ){
return 1;
}
@@ -68590,11 +74034,25 @@
for(i=0; i<p->pSrc->nSrc; i++){
struct SrcList_item *pItem = &p->pSrc->a[i];
if( pItem->pSelect ){
+ NameContext *pNC; /* Used to iterate name contexts */
+ int nRef = 0; /* Refcount for pOuterNC and outer contexts */
const char *zSavedContext = pParse->zAuthContext;
+
+ /* Count the total number of references to pOuterNC and all of its
+ ** parent contexts. After resolving references to expressions in
+ ** pItem->pSelect, check if this value has changed. If so, then
+ ** SELECT statement pItem->pSelect must be correlated. Set the
+ ** pItem->isCorrelated flag if this is the case. */
+ for(pNC=pOuterNC; pNC; pNC=pNC->pNext) nRef += pNC->nRef;
+
if( pItem->zName ) pParse->zAuthContext = pItem->zName;
sqlite3ResolveSelectNames(pParse, pItem->pSelect, pOuterNC);
pParse->zAuthContext = zSavedContext;
if( pParse->nErr || db->mallocFailed ) return WRC_Abort;
+
+ for(pNC=pOuterNC; pNC; pNC=pNC->pNext) nRef -= pNC->nRef;
+ assert( pItem->isCorrelated==0 && nRef<=0 );
+ pItem->isCorrelated = (nRef!=0);
}
}
@@ -68892,7 +74350,7 @@
SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){
CollSeq *pColl = 0;
Expr *p = pExpr;
- while( ALWAYS(p) ){
+ while( p ){
int op;
pColl = p->pColl;
if( pColl ) break;
@@ -69189,6 +74647,7 @@
if( op!=TK_INTEGER || pToken->z==0
|| sqlite3GetInt32(pToken->z, &iValue)==0 ){
nExtra = pToken->n+1;
+ assert( iValue>=0 );
}
}
pNew = sqlite3DbMallocZero(db, sizeof(Expr)+nExtra);
@@ -69202,7 +74661,8 @@
}else{
int c;
pNew->u.zToken = (char*)&pNew[1];
- memcpy(pNew->u.zToken, pToken->z, pToken->n);
+ assert( pToken->z!=0 || pToken->n==0 );
+ if( pToken->n ) memcpy(pNew->u.zToken, pToken->z, pToken->n);
pNew->u.zToken[pToken->n] = 0;
if( dequote && nExtra>=3
&& ((c = pToken->z[0])=='\'' || c=='"' || c=='[' || c=='`') ){
@@ -69354,53 +74814,53 @@
/* Wildcard of the form "?". Assign the next variable number */
assert( z[0]=='?' );
pExpr->iColumn = (ynVar)(++pParse->nVar);
- }else if( z[0]=='?' ){
- /* Wildcard of the form "?nnn". Convert "nnn" to an integer and
- ** use it as the variable number */
- i64 i;
- int bOk = 0==sqlite3Atoi64(&z[1], &i, sqlite3Strlen30(&z[1]), SQLITE_UTF8);
- pExpr->iColumn = (ynVar)i;
- testcase( i==0 );
- testcase( i==1 );
- testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]-1 );
- testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] );
- if( bOk==0 || i<1 || i>db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ){
- sqlite3ErrorMsg(pParse, "variable number must be between ?1 and ?%d",
- db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]);
- }
- if( i>pParse->nVar ){
- pParse->nVar = (int)i;
- }
}else{
- /* Wildcards like ":aaa", "$aaa" or "@aaa". Reuse the same variable
- ** number as the prior appearance of the same name, or if the name
- ** has never appeared before, reuse the same variable number
- */
- int i;
- u32 n;
- n = sqlite3Strlen30(z);
- for(i=0; i<pParse->nVarExpr; i++){
- Expr *pE = pParse->apVarExpr[i];
- assert( pE!=0 );
- if( memcmp(pE->u.zToken, z, n)==0 && pE->u.zToken[n]==0 ){
- pExpr->iColumn = pE->iColumn;
- break;
+ ynVar x = 0;
+ u32 n = sqlite3Strlen30(z);
+ if( z[0]=='?' ){
+ /* Wildcard of the form "?nnn". Convert "nnn" to an integer and
+ ** use it as the variable number */
+ i64 i;
+ int bOk = 0==sqlite3Atoi64(&z[1], &i, n-1, SQLITE_UTF8);
+ pExpr->iColumn = x = (ynVar)i;
+ testcase( i==0 );
+ testcase( i==1 );
+ testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]-1 );
+ testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] );
+ if( bOk==0 || i<1 || i>db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ){
+ sqlite3ErrorMsg(pParse, "variable number must be between ?1 and ?%d",
+ db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]);
+ x = 0;
}
+ if( i>pParse->nVar ){
+ pParse->nVar = (int)i;
+ }
+ }else{
+ /* Wildcards like ":aaa", "$aaa" or "@aaa". Reuse the same variable
+ ** number as the prior appearance of the same name, or if the name
+ ** has never appeared before, reuse the same variable number
+ */
+ ynVar i;
+ for(i=0; i<pParse->nzVar; i++){
+ if( pParse->azVar[i] && memcmp(pParse->azVar[i],z,n+1)==0 ){
+ pExpr->iColumn = x = (ynVar)i+1;
+ break;
+ }
+ }
+ if( x==0 ) x = pExpr->iColumn = (ynVar)(++pParse->nVar);
}
- if( i>=pParse->nVarExpr ){
- pExpr->iColumn = (ynVar)(++pParse->nVar);
- if( pParse->nVarExpr>=pParse->nVarExprAlloc-1 ){
- pParse->nVarExprAlloc += pParse->nVarExprAlloc + 10;
- pParse->apVarExpr =
- sqlite3DbReallocOrFree(
- db,
- pParse->apVarExpr,
- pParse->nVarExprAlloc*sizeof(pParse->apVarExpr[0])
- );
+ if( x>0 ){
+ if( x>pParse->nzVar ){
+ char **a;
+ a = sqlite3DbRealloc(db, pParse->azVar, x*sizeof(a[0]));
+ if( a==0 ) return; /* Error reported through db->mallocFailed */
+ pParse->azVar = a;
+ memset(&a[pParse->nzVar], 0, (x-pParse->nzVar)*sizeof(a[0]));
+ pParse->nzVar = x;
}
- if( !db->mallocFailed ){
- assert( pParse->apVarExpr!=0 );
- pParse->apVarExpr[pParse->nVarExpr++] = pExpr;
+ if( z[0]!='?' || pParse->azVar[x-1]==0 ){
+ sqlite3DbFree(db, pParse->azVar[x-1]);
+ pParse->azVar[x-1] = sqlite3DbStrNDup(db, z, n);
}
}
}
@@ -69414,6 +74874,8 @@
*/
SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3 *db, Expr *p){
if( p==0 ) return;
+ /* Sanity check: Assert that the IntValue is non-negative if it exists */
+ assert( !ExprHasProperty(p, EP_IntValue) || p->u.iValue>=0 );
if( !ExprHasAnyProperty(p, EP_TokenOnly) ){
sqlite3ExprDelete(db, p->pLeft);
sqlite3ExprDelete(db, p->pRight);
@@ -69666,7 +75128,7 @@
pItem->zSpan = sqlite3DbStrDup(db, pOldItem->zSpan);
pItem->sortOrder = pOldItem->sortOrder;
pItem->done = 0;
- pItem->iCol = pOldItem->iCol;
+ pItem->iOrderByCol = pOldItem->iOrderByCol;
pItem->iAlias = pOldItem->iAlias;
}
return pNew;
@@ -69698,7 +75160,9 @@
pNewItem->zAlias = sqlite3DbStrDup(db, pOldItem->zAlias);
pNewItem->jointype = pOldItem->jointype;
pNewItem->iCursor = pOldItem->iCursor;
- pNewItem->isPopulated = pOldItem->isPopulated;
+ pNewItem->addrFillSub = pOldItem->addrFillSub;
+ pNewItem->regReturn = pOldItem->regReturn;
+ pNewItem->isCorrelated = pOldItem->isCorrelated;
pNewItem->zIndex = sqlite3DbStrDup(db, pOldItem->zIndex);
pNewItem->notIndexed = pOldItem->notIndexed;
pNewItem->pIndex = pOldItem->pIndex;
@@ -69734,7 +75198,7 @@
return pNew;
}
SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3 *db, Select *p, int flags){
- Select *pNew;
+ Select *pNew, *pPrior;
if( p==0 ) return 0;
pNew = sqlite3DbMallocRaw(db, sizeof(*p) );
if( pNew==0 ) return 0;
@@ -69745,7 +75209,9 @@
pNew->pHaving = sqlite3ExprDup(db, p->pHaving, flags);
pNew->pOrderBy = sqlite3ExprListDup(db, p->pOrderBy, flags);
pNew->op = p->op;
- pNew->pPrior = sqlite3SelectDup(db, p->pPrior, flags);
+ pNew->pPrior = pPrior = sqlite3SelectDup(db, p->pPrior, flags);
+ if( pPrior ) pPrior->pNext = pNew;
+ pNew->pNext = 0;
pNew->pLimit = sqlite3ExprDup(db, p->pLimit, flags);
pNew->pOffset = sqlite3ExprDup(db, p->pOffset, flags);
pNew->iLimit = 0;
@@ -69998,16 +75464,17 @@
*/
SQLITE_PRIVATE int sqlite3ExprIsInteger(Expr *p, int *pValue){
int rc = 0;
+
+ /* If an expression is an integer literal that fits in a signed 32-bit
+ ** integer, then the EP_IntValue flag will have already been set */
+ assert( p->op!=TK_INTEGER || (p->flags & EP_IntValue)!=0
+ || sqlite3GetInt32(p->u.zToken, &rc)==0 );
+
if( p->flags & EP_IntValue ){
*pValue = p->u.iValue;
return 1;
}
switch( p->op ){
- case TK_INTEGER: {
- rc = sqlite3GetInt32(p->u.zToken, pValue);
- assert( rc==0 );
- break;
- }
case TK_UPLUS: {
rc = sqlite3ExprIsInteger(p->pLeft, pValue);
break;
@@ -70022,13 +75489,6 @@
}
default: break;
}
- if( rc ){
- assert( ExprHasAnyProperty(p, EP_Reduced|EP_TokenOnly)
- || (p->flags2 & EP2_MallocedToken)==0 );
- p->op = TK_INTEGER;
- p->flags |= EP_IntValue;
- p->u.iValue = *pValue;
- }
return rc;
}
@@ -70174,6 +75634,15 @@
#endif /* SQLITE_OMIT_SUBQUERY */
/*
+** Code an OP_Once instruction and allocate space for its flag. Return the
+** address of the new instruction.
+*/
+SQLITE_PRIVATE int sqlite3CodeOnce(Parse *pParse){
+ Vdbe *v = sqlite3GetVdbe(pParse); /* Virtual machine being coded */
+ return sqlite3VdbeAddOp1(v, OP_Once, pParse->nOnce++);
+}
+
+/*
** This function is used by the implementation of the IN (...) operator.
** It's job is to find or create a b-tree structure that may be used
** either to test for membership of the (...) set or to iterate through
@@ -70233,6 +75702,7 @@
int eType = 0; /* Type of RHS table. IN_INDEX_* */
int iTab = pParse->nTab++; /* Cursor of the RHS table */
int mustBeUnique = (prNotFound==0); /* True if RHS must be unique */
+ Vdbe *v = sqlite3GetVdbe(pParse); /* Virtual machine being coded */
assert( pX->op==TK_IN );
@@ -70243,11 +75713,18 @@
p = (ExprHasProperty(pX, EP_xIsSelect) ? pX->x.pSelect : 0);
if( ALWAYS(pParse->nErr==0) && isCandidateForInOpt(p) ){
sqlite3 *db = pParse->db; /* Database connection */
- Expr *pExpr = p->pEList->a[0].pExpr; /* Expression <column> */
- int iCol = pExpr->iColumn; /* Index of column <column> */
- Vdbe *v = sqlite3GetVdbe(pParse); /* Virtual machine being coded */
- Table *pTab = p->pSrc->a[0].pTab; /* Table <table>. */
+ Table *pTab; /* Table <table>. */
+ Expr *pExpr; /* Expression <column> */
+ int iCol; /* Index of column <column> */
int iDb; /* Database idx for pTab */
+
+ assert( p ); /* Because of isCandidateForInOpt(p) */
+ assert( p->pEList!=0 ); /* Because of isCandidateForInOpt(p) */
+ assert( p->pEList->a[0].pExpr!=0 ); /* Because of isCandidateForInOpt(p) */
+ assert( p->pSrc!=0 ); /* Because of isCandidateForInOpt(p) */
+ pTab = p->pSrc->a[0].pTab;
+ pExpr = p->pEList->a[0].pExpr;
+ iCol = pExpr->iColumn;
/* Code an OP_VerifyCookie and OP_TableLock for <table>. */
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
@@ -70260,11 +75737,9 @@
*/
assert(v);
if( iCol<0 ){
- int iMem = ++pParse->nMem;
int iAddr;
- iAddr = sqlite3VdbeAddOp1(v, OP_If, iMem);
- sqlite3VdbeAddOp2(v, OP_Integer, 1, iMem);
+ iAddr = sqlite3CodeOnce(pParse);
sqlite3OpenTable(pParse, iTab, iDb, pTab, OP_OpenRead);
eType = IN_INDEX_ROWID;
@@ -70290,13 +75765,11 @@
&& sqlite3FindCollSeq(db, ENC(db), pIdx->azColl[0], 0)==pReq
&& (!mustBeUnique || (pIdx->nColumn==1 && pIdx->onError!=OE_None))
){
- int iMem = ++pParse->nMem;
int iAddr;
char *pKey;
pKey = (char *)sqlite3IndexKeyinfo(pParse, pIdx);
- iAddr = sqlite3VdbeAddOp1(v, OP_If, iMem);
- sqlite3VdbeAddOp2(v, OP_Integer, 1, iMem);
+ iAddr = sqlite3CodeOnce(pParse);
sqlite3VdbeAddOp4(v, OP_OpenRead, iTab, pIdx->tnum, iDb,
pKey,P4_KEYINFO_HANDOFF);
@@ -70306,6 +75779,7 @@
sqlite3VdbeJumpHere(v, iAddr);
if( prNotFound && !pTab->aCol[iCol].notNull ){
*prNotFound = ++pParse->nMem;
+ sqlite3VdbeAddOp2(v, OP_Null, 0, *prNotFound);
}
}
}
@@ -70321,6 +75795,7 @@
eType = IN_INDEX_EPH;
if( prNotFound ){
*prNotFound = rMayHaveNull = ++pParse->nMem;
+ sqlite3VdbeAddOp2(v, OP_Null, 0, *prNotFound);
}else{
testcase( pParse->nQueryLoop>(double)1 );
pParse->nQueryLoop = (double)1;
@@ -70377,7 +75852,7 @@
int rMayHaveNull, /* Register that records whether NULLs exist in RHS */
int isRowid /* If true, LHS of IN operator is a rowid */
){
- int testAddr = 0; /* One-time test address */
+ int testAddr = -1; /* One-time test address */
int rReg = 0; /* Register storing resulting */
Vdbe *v = sqlite3GetVdbe(pParse);
if( NEVER(v==0) ) return 0;
@@ -70393,17 +75868,14 @@
** If all of the above are false, then we can run this code just once
** save the results, and reuse the same result on subsequent invocations.
*/
- if( !ExprHasAnyProperty(pExpr, EP_VarSelect) && !pParse->pTriggerTab ){
- int mem = ++pParse->nMem;
- sqlite3VdbeAddOp1(v, OP_If, mem);
- testAddr = sqlite3VdbeAddOp2(v, OP_Integer, 1, mem);
- assert( testAddr>0 || pParse->db->mallocFailed );
+ if( !ExprHasAnyProperty(pExpr, EP_VarSelect) ){
+ testAddr = sqlite3CodeOnce(pParse);
}
#ifndef SQLITE_OMIT_EXPLAIN
if( pParse->explain==2 ){
char *zMsg = sqlite3MPrintf(
- pParse->db, "EXECUTE %s%s SUBQUERY %d", testAddr?"":"CORRELATED ",
+ pParse->db, "EXECUTE %s%s SUBQUERY %d", testAddr>=0?"":"CORRELATED ",
pExpr->op==TK_IN?"LIST":"SCALAR", pParse->iNextSelectId
);
sqlite3VdbeAddOp4(v, OP_Explain, pParse->iSelectId, 0, 0, zMsg, P4_DYNAMIC);
@@ -70495,9 +75967,9 @@
** this code only executes once. Because for a non-constant
** expression we need to rerun this code each time.
*/
- if( testAddr && !sqlite3ExprIsConstant(pE2) ){
- sqlite3VdbeChangeToNoop(v, testAddr-1, 2);
- testAddr = 0;
+ if( testAddr>=0 && !sqlite3ExprIsConstant(pE2) ){
+ sqlite3VdbeChangeToNoop(v, testAddr);
+ testAddr = -1;
}
/* Evaluate the expression and insert it into the temp table */
@@ -70566,8 +76038,8 @@
}
}
- if( testAddr ){
- sqlite3VdbeJumpHere(v, testAddr-1);
+ if( testAddr>=0 ){
+ sqlite3VdbeJumpHere(v, testAddr);
}
sqlite3ExprCachePop(pParse, 1);
@@ -70753,6 +76225,7 @@
Vdbe *v = pParse->pVdbe;
if( pExpr->flags & EP_IntValue ){
int i = pExpr->u.iValue;
+ assert( i>=0 );
if( negFlag ) i = -i;
sqlite3VdbeAddOp2(v, OP_Integer, i, iMem);
}else{
@@ -70763,7 +76236,7 @@
c = sqlite3Atoi64(z, &value, sqlite3Strlen30(z), SQLITE_UTF8);
if( c==0 || (c==2 && negFlag) ){
char *zV;
- if( negFlag ){ value = -value; }
+ if( negFlag ){ value = c==2 ? SMALLEST_INT64 : -value; }
zV = dup8bytes(v, (char*)&value);
sqlite3VdbeAddOp4(v, OP_Int64, 0, iMem, 0, zV, P4_INT64);
}else{
@@ -71088,7 +76561,7 @@
inReg = pCol->iMem;
break;
}else if( pAggInfo->useSortingIdx ){
- sqlite3VdbeAddOp3(v, OP_Column, pAggInfo->sortingIdx,
+ sqlite3VdbeAddOp3(v, OP_Column, pAggInfo->sortingIdxPTab,
pCol->iSorterColumn, target);
break;
}
@@ -71147,7 +76620,9 @@
assert( pExpr->u.zToken[0]!=0 );
sqlite3VdbeAddOp2(v, OP_Variable, pExpr->iColumn, target);
if( pExpr->u.zToken[1]!=0 ){
- sqlite3VdbeChangeP4(v, -1, pExpr->u.zToken, 0);
+ assert( pExpr->u.zToken[0]=='?'
+ || strcmp(pExpr->u.zToken, pParse->azVar[pExpr->iColumn-1])==0 );
+ sqlite3VdbeChangeP4(v, -1, pParse->azVar[pExpr->iColumn-1], P4_STATIC);
}
break;
}
@@ -71732,6 +77207,264 @@
return inReg;
}
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
+/*
+** Generate a human-readable explanation of an expression tree.
+*/
+SQLITE_PRIVATE void sqlite3ExplainExpr(Vdbe *pOut, Expr *pExpr){
+ int op; /* The opcode being coded */
+ const char *zBinOp = 0; /* Binary operator */
+ const char *zUniOp = 0; /* Unary operator */
+ if( pExpr==0 ){
+ op = TK_NULL;
+ }else{
+ op = pExpr->op;
+ }
+ switch( op ){
+ case TK_AGG_COLUMN: {
+ sqlite3ExplainPrintf(pOut, "AGG{%d:%d}",
+ pExpr->iTable, pExpr->iColumn);
+ break;
+ }
+ case TK_COLUMN: {
+ if( pExpr->iTable<0 ){
+ /* This only happens when coding check constraints */
+ sqlite3ExplainPrintf(pOut, "COLUMN(%d)", pExpr->iColumn);
+ }else{
+ sqlite3ExplainPrintf(pOut, "{%d:%d}",
+ pExpr->iTable, pExpr->iColumn);
+ }
+ break;
+ }
+ case TK_INTEGER: {
+ if( pExpr->flags & EP_IntValue ){
+ sqlite3ExplainPrintf(pOut, "%d", pExpr->u.iValue);
+ }else{
+ sqlite3ExplainPrintf(pOut, "%s", pExpr->u.zToken);
+ }
+ break;
+ }
+#ifndef SQLITE_OMIT_FLOATING_POINT
+ case TK_FLOAT: {
+ sqlite3ExplainPrintf(pOut,"%s", pExpr->u.zToken);
+ break;
+ }
+#endif
+ case TK_STRING: {
+ sqlite3ExplainPrintf(pOut,"%Q", pExpr->u.zToken);
+ break;
+ }
+ case TK_NULL: {
+ sqlite3ExplainPrintf(pOut,"NULL");
+ break;
+ }
+#ifndef SQLITE_OMIT_BLOB_LITERAL
+ case TK_BLOB: {
+ sqlite3ExplainPrintf(pOut,"%s", pExpr->u.zToken);
+ break;
+ }
+#endif
+ case TK_VARIABLE: {
+ sqlite3ExplainPrintf(pOut,"VARIABLE(%s,%d)",
+ pExpr->u.zToken, pExpr->iColumn);
+ break;
+ }
+ case TK_REGISTER: {
+ sqlite3ExplainPrintf(pOut,"REGISTER(%d)", pExpr->iTable);
+ break;
+ }
+ case TK_AS: {
+ sqlite3ExplainExpr(pOut, pExpr->pLeft);
+ break;
+ }
+#ifndef SQLITE_OMIT_CAST
+ case TK_CAST: {
+ /* Expressions of the form: CAST(pLeft AS token) */
+ const char *zAff = "unk";
+ switch( sqlite3AffinityType(pExpr->u.zToken) ){
+ case SQLITE_AFF_TEXT: zAff = "TEXT"; break;
+ case SQLITE_AFF_NONE: zAff = "NONE"; break;
+ case SQLITE_AFF_NUMERIC: zAff = "NUMERIC"; break;
+ case SQLITE_AFF_INTEGER: zAff = "INTEGER"; break;
+ case SQLITE_AFF_REAL: zAff = "REAL"; break;
+ }
+ sqlite3ExplainPrintf(pOut, "CAST-%s(", zAff);
+ sqlite3ExplainExpr(pOut, pExpr->pLeft);
+ sqlite3ExplainPrintf(pOut, ")");
+ break;
+ }
+#endif /* SQLITE_OMIT_CAST */
+ case TK_LT: zBinOp = "LT"; break;
+ case TK_LE: zBinOp = "LE"; break;
+ case TK_GT: zBinOp = "GT"; break;
+ case TK_GE: zBinOp = "GE"; break;
+ case TK_NE: zBinOp = "NE"; break;
+ case TK_EQ: zBinOp = "EQ"; break;
+ case TK_IS: zBinOp = "IS"; break;
+ case TK_ISNOT: zBinOp = "ISNOT"; break;
+ case TK_AND: zBinOp = "AND"; break;
+ case TK_OR: zBinOp = "OR"; break;
+ case TK_PLUS: zBinOp = "ADD"; break;
+ case TK_STAR: zBinOp = "MUL"; break;
+ case TK_MINUS: zBinOp = "SUB"; break;
+ case TK_REM: zBinOp = "REM"; break;
+ case TK_BITAND: zBinOp = "BITAND"; break;
+ case TK_BITOR: zBinOp = "BITOR"; break;
+ case TK_SLASH: zBinOp = "DIV"; break;
+ case TK_LSHIFT: zBinOp = "LSHIFT"; break;
+ case TK_RSHIFT: zBinOp = "RSHIFT"; break;
+ case TK_CONCAT: zBinOp = "CONCAT"; break;
+
+ case TK_UMINUS: zUniOp = "UMINUS"; break;
+ case TK_UPLUS: zUniOp = "UPLUS"; break;
+ case TK_BITNOT: zUniOp = "BITNOT"; break;
+ case TK_NOT: zUniOp = "NOT"; break;
+ case TK_ISNULL: zUniOp = "ISNULL"; break;
+ case TK_NOTNULL: zUniOp = "NOTNULL"; break;
+
+ case TK_AGG_FUNCTION:
+ case TK_CONST_FUNC:
+ case TK_FUNCTION: {
+ ExprList *pFarg; /* List of function arguments */
+ if( ExprHasAnyProperty(pExpr, EP_TokenOnly) ){
+ pFarg = 0;
+ }else{
+ pFarg = pExpr->x.pList;
+ }
+ sqlite3ExplainPrintf(pOut, "%sFUNCTION:%s(",
+ op==TK_AGG_FUNCTION ? "AGG_" : "",
+ pExpr->u.zToken);
+ if( pFarg ){
+ sqlite3ExplainExprList(pOut, pFarg);
+ }
+ sqlite3ExplainPrintf(pOut, ")");
+ break;
+ }
+#ifndef SQLITE_OMIT_SUBQUERY
+ case TK_EXISTS: {
+ sqlite3ExplainPrintf(pOut, "EXISTS(");
+ sqlite3ExplainSelect(pOut, pExpr->x.pSelect);
+ sqlite3ExplainPrintf(pOut,")");
+ break;
+ }
+ case TK_SELECT: {
+ sqlite3ExplainPrintf(pOut, "(");
+ sqlite3ExplainSelect(pOut, pExpr->x.pSelect);
+ sqlite3ExplainPrintf(pOut, ")");
+ break;
+ }
+ case TK_IN: {
+ sqlite3ExplainPrintf(pOut, "IN(");
+ sqlite3ExplainExpr(pOut, pExpr->pLeft);
+ sqlite3ExplainPrintf(pOut, ",");
+ if( ExprHasProperty(pExpr, EP_xIsSelect) ){
+ sqlite3ExplainSelect(pOut, pExpr->x.pSelect);
+ }else{
+ sqlite3ExplainExprList(pOut, pExpr->x.pList);
+ }
+ sqlite3ExplainPrintf(pOut, ")");
+ break;
+ }
+#endif /* SQLITE_OMIT_SUBQUERY */
+
+ /*
+ ** x BETWEEN y AND z
+ **
+ ** This is equivalent to
+ **
+ ** x>=y AND x<=z
+ **
+ ** X is stored in pExpr->pLeft.
+ ** Y is stored in pExpr->pList->a[0].pExpr.
+ ** Z is stored in pExpr->pList->a[1].pExpr.
+ */
+ case TK_BETWEEN: {
+ Expr *pX = pExpr->pLeft;
+ Expr *pY = pExpr->x.pList->a[0].pExpr;
+ Expr *pZ = pExpr->x.pList->a[1].pExpr;
+ sqlite3ExplainPrintf(pOut, "BETWEEN(");
+ sqlite3ExplainExpr(pOut, pX);
+ sqlite3ExplainPrintf(pOut, ",");
+ sqlite3ExplainExpr(pOut, pY);
+ sqlite3ExplainPrintf(pOut, ",");
+ sqlite3ExplainExpr(pOut, pZ);
+ sqlite3ExplainPrintf(pOut, ")");
+ break;
+ }
+ case TK_TRIGGER: {
+ /* If the opcode is TK_TRIGGER, then the expression is a reference
+ ** to a column in the new.* or old.* pseudo-tables available to
+ ** trigger programs. In this case Expr.iTable is set to 1 for the
+ ** new.* pseudo-table, or 0 for the old.* pseudo-table. Expr.iColumn
+ ** is set to the column of the pseudo-table to read, or to -1 to
+ ** read the rowid field.
+ */
+ sqlite3ExplainPrintf(pOut, "%s(%d)",
+ pExpr->iTable ? "NEW" : "OLD", pExpr->iColumn);
+ break;
+ }
+ case TK_CASE: {
+ sqlite3ExplainPrintf(pOut, "CASE(");
+ sqlite3ExplainExpr(pOut, pExpr->pLeft);
+ sqlite3ExplainPrintf(pOut, ",");
+ sqlite3ExplainExprList(pOut, pExpr->x.pList);
+ break;
+ }
+#ifndef SQLITE_OMIT_TRIGGER
+ case TK_RAISE: {
+ const char *zType = "unk";
+ switch( pExpr->affinity ){
+ case OE_Rollback: zType = "rollback"; break;
+ case OE_Abort: zType = "abort"; break;
+ case OE_Fail: zType = "fail"; break;
+ case OE_Ignore: zType = "ignore"; break;
+ }
+ sqlite3ExplainPrintf(pOut, "RAISE-%s(%s)", zType, pExpr->u.zToken);
+ break;
+ }
+#endif
+ }
+ if( zBinOp ){
+ sqlite3ExplainPrintf(pOut,"%s(", zBinOp);
+ sqlite3ExplainExpr(pOut, pExpr->pLeft);
+ sqlite3ExplainPrintf(pOut,",");
+ sqlite3ExplainExpr(pOut, pExpr->pRight);
+ sqlite3ExplainPrintf(pOut,")");
+ }else if( zUniOp ){
+ sqlite3ExplainPrintf(pOut,"%s(", zUniOp);
+ sqlite3ExplainExpr(pOut, pExpr->pLeft);
+ sqlite3ExplainPrintf(pOut,")");
+ }
+}
+#endif /* defined(SQLITE_ENABLE_TREE_EXPLAIN) */
+
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
+/*
+** Generate a human-readable explanation of an expression list.
+*/
+SQLITE_PRIVATE void sqlite3ExplainExprList(Vdbe *pOut, ExprList *pList){
+ int i;
+ if( pList==0 || pList->nExpr==0 ){
+ sqlite3ExplainPrintf(pOut, "(empty-list)");
+ return;
+ }else if( pList->nExpr==1 ){
+ sqlite3ExplainExpr(pOut, pList->a[0].pExpr);
+ }else{
+ sqlite3ExplainPush(pOut);
+ for(i=0; i<pList->nExpr; i++){
+ sqlite3ExplainPrintf(pOut, "item[%d] = ", i);
+ sqlite3ExplainPush(pOut);
+ sqlite3ExplainExpr(pOut, pList->a[i].pExpr);
+ sqlite3ExplainPop(pOut);
+ if( i<pList->nExpr-1 ){
+ sqlite3ExplainNL(pOut);
+ }
+ }
+ sqlite3ExplainPop(pOut);
+ }
+}
+#endif /* SQLITE_DEBUG */
+
/*
** Return TRUE if pExpr is an constant expression that is appropriate
** for factoring out of a loop. Appropriate expressions are:
@@ -72051,6 +77784,7 @@
exprCodeBetween(pParse, pExpr, dest, 1, jumpIfNull);
break;
}
+#ifndef SQLITE_OMIT_SUBQUERY
case TK_IN: {
int destIfFalse = sqlite3VdbeMakeLabel(v);
int destIfNull = jumpIfNull ? dest : destIfFalse;
@@ -72059,6 +77793,7 @@
sqlite3VdbeResolveLabel(v, destIfFalse);
break;
}
+#endif
default: {
r1 = sqlite3ExprCodeTemp(pParse, pExpr, ®Free1);
sqlite3VdbeAddOp3(v, OP_If, r1, dest, jumpIfNull!=0);
@@ -72192,6 +77927,7 @@
exprCodeBetween(pParse, pExpr, dest, 0, jumpIfNull);
break;
}
+#ifndef SQLITE_OMIT_SUBQUERY
case TK_IN: {
if( jumpIfNull ){
sqlite3ExprCodeIN(pParse, pExpr, dest, dest);
@@ -72202,6 +77938,7 @@
}
break;
}
+#endif
default: {
r1 = sqlite3ExprCodeTemp(pParse, pExpr, ®Free1);
sqlite3VdbeAddOp3(v, OP_IfNot, r1, dest, jumpIfNull!=0);
@@ -72251,7 +77988,7 @@
}
}else if( pA->op!=TK_COLUMN && pA->u.zToken ){
if( ExprHasProperty(pB, EP_IntValue) || NEVER(pB->u.zToken==0) ) return 2;
- if( sqlite3StrICmp(pA->u.zToken,pB->u.zToken)!=0 ){
+ if( strcmp(pA->u.zToken,pB->u.zToken)!=0 ){
return 2;
}
}
@@ -72552,6 +78289,14 @@
}
}
+/*
+** Mark all temporary registers as being unavailable for reuse.
+*/
+SQLITE_PRIVATE void sqlite3ClearTempRegCache(Parse *pParse){
+ pParse->nTempReg = 0;
+ pParse->nRangeReg = 0;
+}
+
/************** End of expr.c ************************************************/
/************** Begin file alter.c *******************************************/
/*
@@ -72913,19 +78658,35 @@
/* Reload the table, index and permanent trigger schemas. */
zWhere = sqlite3MPrintf(pParse->db, "tbl_name=%Q", zName);
if( !zWhere ) return;
- sqlite3VdbeAddOp4(v, OP_ParseSchema, iDb, 0, 0, zWhere, P4_DYNAMIC);
+ sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere);
#ifndef SQLITE_OMIT_TRIGGER
/* Now, if the table is not stored in the temp database, reload any temp
** triggers. Don't use IN(...) in case SQLITE_OMIT_SUBQUERY is defined.
*/
if( (zWhere=whereTempTriggers(pParse, pTab))!=0 ){
- sqlite3VdbeAddOp4(v, OP_ParseSchema, 1, 0, 0, zWhere, P4_DYNAMIC);
+ sqlite3VdbeAddParseSchemaOp(v, 1, zWhere);
}
#endif
}
/*
+** Parameter zName is the name of a table that is about to be altered
+** (either with ALTER TABLE ... RENAME TO or ALTER TABLE ... ADD COLUMN).
+** If the table is a system table, this function leaves an error message
+** in pParse->zErr (system tables may not be altered) and returns non-zero.
+**
+** Or, if zName is not a system table, zero is returned.
+*/
+static int isSystemTable(Parse *pParse, const char *zName){
+ if( sqlite3Strlen30(zName)>6 && 0==sqlite3StrNICmp(zName, "sqlite_", 7) ){
+ sqlite3ErrorMsg(pParse, "table %s may not be altered", zName);
+ return 1;
+ }
+ return 0;
+}
+
+/*
** Generate code to implement the "ALTER TABLE xxx RENAME TO yyy"
** command.
*/
@@ -72975,14 +78736,11 @@
/* Make sure it is not a system table being altered, or a reserved name
** that the table is being renamed to.
*/
- if( sqlite3Strlen30(pTab->zName)>6
- && 0==sqlite3StrNICmp(pTab->zName, "sqlite_", 7)
- ){
- sqlite3ErrorMsg(pParse, "table %s may not be altered", pTab->zName);
+ if( SQLITE_OK!=isSystemTable(pParse, pTab->zName) ){
goto exit_rename_table;
}
- if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){
- goto exit_rename_table;
+ if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){ goto
+ exit_rename_table;
}
#ifndef SQLITE_OMIT_VIEW
@@ -73314,6 +79072,9 @@
sqlite3ErrorMsg(pParse, "Cannot add a column to a view");
goto exit_begin_add_column;
}
+ if( SQLITE_OK!=isSystemTable(pParse, pTab->zName) ){
+ goto exit_begin_add_column;
+ }
assert( pTab->addColOffset>0 );
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
@@ -73378,22 +79139,124 @@
**
*************************************************************************
** This file contains code associated with the ANALYZE command.
+**
+** The ANALYZE command gather statistics about the content of tables
+** and indices. These statistics are made available to the query planner
+** to help it make better decisions about how to perform queries.
+**
+** The following system tables are or have been supported:
+**
+** CREATE TABLE sqlite_stat1(tbl, idx, stat);
+** CREATE TABLE sqlite_stat2(tbl, idx, sampleno, sample);
+** CREATE TABLE sqlite_stat3(tbl, idx, nEq, nLt, nDLt, sample);
+**
+** Additional tables might be added in future releases of SQLite.
+** The sqlite_stat2 table is not created or used unless the SQLite version
+** is between 3.6.18 and 3.7.8, inclusive, and unless SQLite is compiled
+** with SQLITE_ENABLE_STAT2. The sqlite_stat2 table is deprecated.
+** The sqlite_stat2 table is superceded by sqlite_stat3, which is only
+** created and used by SQLite versions 3.7.9 and later and with
+** SQLITE_ENABLE_STAT3 defined. The fucntionality of sqlite_stat3
+** is a superset of sqlite_stat2.
+**
+** Format of sqlite_stat1:
+**
+** There is normally one row per index, with the index identified by the
+** name in the idx column. The tbl column is the name of the table to
+** which the index belongs. In each such row, the stat column will be
+** a string consisting of a list of integers. The first integer in this
+** list is the number of rows in the index and in the table. The second
+** integer is the average number of rows in the index that have the same
+** value in the first column of the index. The third integer is the average
+** number of rows in the index that have the same value for the first two
+** columns. The N-th integer (for N>1) is the average number of rows in
+** the index which have the same value for the first N-1 columns. For
+** a K-column index, there will be K+1 integers in the stat column. If
+** the index is unique, then the last integer will be 1.
+**
+** The list of integers in the stat column can optionally be followed
+** by the keyword "unordered". The "unordered" keyword, if it is present,
+** must be separated from the last integer by a single space. If the
+** "unordered" keyword is present, then the query planner assumes that
+** the index is unordered and will not use the index for a range query.
+**
+** If the sqlite_stat1.idx column is NULL, then the sqlite_stat1.stat
+** column contains a single integer which is the (estimated) number of
+** rows in the table identified by sqlite_stat1.tbl.
+**
+** Format of sqlite_stat2:
+**
+** The sqlite_stat2 is only created and is only used if SQLite is compiled
+** with SQLITE_ENABLE_STAT2 and if the SQLite version number is between
+** 3.6.18 and 3.7.8. The "stat2" table contains additional information
+** about the distribution of keys within an index. The index is identified by
+** the "idx" column and the "tbl" column is the name of the table to which
+** the index belongs. There are usually 10 rows in the sqlite_stat2
+** table for each index.
+**
+** The sqlite_stat2 entries for an index that have sampleno between 0 and 9
+** inclusive are samples of the left-most key value in the index taken at
+** evenly spaced points along the index. Let the number of samples be S
+** (10 in the standard build) and let C be the number of rows in the index.
+** Then the sampled rows are given by:
+**
+** rownumber = (i*C*2 + C)/(S*2)
+**
+** For i between 0 and S-1. Conceptually, the index space is divided into
+** S uniform buckets and the samples are the middle row from each bucket.
+**
+** The format for sqlite_stat2 is recorded here for legacy reference. This
+** version of SQLite does not support sqlite_stat2. It neither reads nor
+** writes the sqlite_stat2 table. This version of SQLite only supports
+** sqlite_stat3.
+**
+** Format for sqlite_stat3:
+**
+** The sqlite_stat3 is an enhancement to sqlite_stat2. A new name is
+** used to avoid compatibility problems.
+**
+** The format of the sqlite_stat3 table is similar to the format of
+** the sqlite_stat2 table. There are multiple entries for each index.
+** The idx column names the index and the tbl column is the table of the
+** index. If the idx and tbl columns are the same, then the sample is
+** of the INTEGER PRIMARY KEY. The sample column is a value taken from
+** the left-most column of the index. The nEq column is the approximate
+** number of entires in the index whose left-most column exactly matches
+** the sample. nLt is the approximate number of entires whose left-most
+** column is less than the sample. The nDLt column is the approximate
+** number of distinct left-most entries in the index that are less than
+** the sample.
+**
+** Future versions of SQLite might change to store a string containing
+** multiple integers values in the nDLt column of sqlite_stat3. The first
+** integer will be the number of prior index entires that are distinct in
+** the left-most column. The second integer will be the number of prior index
+** entries that are distinct in the first two columns. The third integer
+** will be the number of prior index entries that are distinct in the first
+** three columns. And so forth. With that extension, the nDLt field is
+** similar in function to the sqlite_stat1.stat field.
+**
+** There can be an arbitrary number of sqlite_stat3 entries per index.
+** The ANALYZE command will typically generate sqlite_stat3 tables
+** that contain between 10 and 40 samples which are distributed across
+** the key space, though not uniformly, and which include samples with
+** largest possible nEq values.
*/
#ifndef SQLITE_OMIT_ANALYZE
/*
** This routine generates code that opens the sqlite_stat1 table for
** writing with cursor iStatCur. If the library was built with the
-** SQLITE_ENABLE_STAT2 macro defined, then the sqlite_stat2 table is
+** SQLITE_ENABLE_STAT3 macro defined, then the sqlite_stat3 table is
** opened for writing using cursor (iStatCur+1)
**
** If the sqlite_stat1 tables does not previously exist, it is created.
-** Similarly, if the sqlite_stat2 table does not exist and the library
-** is compiled with SQLITE_ENABLE_STAT2 defined, it is created.
+** Similarly, if the sqlite_stat3 table does not exist and the library
+** is compiled with SQLITE_ENABLE_STAT3 defined, it is created.
**
** Argument zWhere may be a pointer to a buffer containing a table name,
** or it may be a NULL pointer. If it is not NULL, then all entries in
-** the sqlite_stat1 and (if applicable) sqlite_stat2 tables associated
+** the sqlite_stat1 and (if applicable) sqlite_stat3 tables associated
** with the named table are deleted. If zWhere==0, then code is generated
** to delete all stat table entries.
*/
@@ -73401,15 +79264,16 @@
Parse *pParse, /* Parsing context */
int iDb, /* The database we are looking in */
int iStatCur, /* Open the sqlite_stat1 table on this cursor */
- const char *zWhere /* Delete entries associated with this table */
+ const char *zWhere, /* Delete entries for this table or index */
+ const char *zWhereType /* Either "tbl" or "idx" */
){
static const struct {
const char *zName;
const char *zCols;
} aTable[] = {
{ "sqlite_stat1", "tbl,idx,stat" },
-#ifdef SQLITE_ENABLE_STAT2
- { "sqlite_stat2", "tbl,idx,sampleno,sample" },
+#ifdef SQLITE_ENABLE_STAT3
+ { "sqlite_stat3", "tbl,idx,neq,nlt,ndlt,sample" },
#endif
};
@@ -73425,6 +79289,9 @@
assert( sqlite3VdbeDb(v)==db );
pDb = &db->aDb[iDb];
+ /* Create new statistic tables if they do not exist, or clear them
+ ** if they do already exist.
+ */
for(i=0; i<ArraySize(aTable); i++){
const char *zTab = aTable[i].zName;
Table *pStat;
@@ -73446,7 +79313,7 @@
sqlite3TableLock(pParse, iDb, aRoot[i], 1, zTab);
if( zWhere ){
sqlite3NestedParse(pParse,
- "DELETE FROM %Q.%s WHERE tbl=%Q", pDb->zName, zTab, zWhere
+ "DELETE FROM %Q.%s WHERE %s=%Q", pDb->zName, zTab, zWhereType, zWhere
);
}else{
/* The sqlite_stat[12] table already exists. Delete all rows. */
@@ -73455,7 +79322,7 @@
}
}
- /* Open the sqlite_stat[12] tables for writing. */
+ /* Open the sqlite_stat[13] tables for writing. */
for(i=0; i<ArraySize(aTable); i++){
sqlite3VdbeAddOp3(v, OP_OpenWrite, iStatCur+i, aRoot[i], iDb);
sqlite3VdbeChangeP4(v, -1, (char *)3, P4_INT32);
@@ -73464,12 +79331,233 @@
}
/*
+** Recommended number of samples for sqlite_stat3
+*/
+#ifndef SQLITE_STAT3_SAMPLES
+# define SQLITE_STAT3_SAMPLES 24
+#endif
+
+/*
+** Three SQL functions - stat3_init(), stat3_push(), and stat3_pop() -
+** share an instance of the following structure to hold their state
+** information.
+*/
+typedef struct Stat3Accum Stat3Accum;
+struct Stat3Accum {
+ tRowcnt nRow; /* Number of rows in the entire table */
+ tRowcnt nPSample; /* How often to do a periodic sample */
+ int iMin; /* Index of entry with minimum nEq and hash */
+ int mxSample; /* Maximum number of samples to accumulate */
+ int nSample; /* Current number of samples */
+ u32 iPrn; /* Pseudo-random number used for sampling */
+ struct Stat3Sample {
+ i64 iRowid; /* Rowid in main table of the key */
+ tRowcnt nEq; /* sqlite_stat3.nEq */
+ tRowcnt nLt; /* sqlite_stat3.nLt */
+ tRowcnt nDLt; /* sqlite_stat3.nDLt */
+ u8 isPSample; /* True if a periodic sample */
+ u32 iHash; /* Tiebreaker hash */
+ } *a; /* An array of samples */
+};
+
+#ifdef SQLITE_ENABLE_STAT3
+/*
+** Implementation of the stat3_init(C,S) SQL function. The two parameters
+** are the number of rows in the table or index (C) and the number of samples
+** to accumulate (S).
+**
+** This routine allocates the Stat3Accum object.
+**
+** The return value is the Stat3Accum object (P).
+*/
+static void stat3Init(
+ sqlite3_context *context,
+ int argc,
+ sqlite3_value **argv
+){
+ Stat3Accum *p;
+ tRowcnt nRow;
+ int mxSample;
+ int n;
+
+ UNUSED_PARAMETER(argc);
+ nRow = (tRowcnt)sqlite3_value_int64(argv[0]);
+ mxSample = sqlite3_value_int(argv[1]);
+ n = sizeof(*p) + sizeof(p->a[0])*mxSample;
+ p = sqlite3_malloc( n );
+ if( p==0 ){
+ sqlite3_result_error_nomem(context);
+ return;
+ }
+ memset(p, 0, n);
+ p->a = (struct Stat3Sample*)&p[1];
+ p->nRow = nRow;
+ p->mxSample = mxSample;
+ p->nPSample = p->nRow/(mxSample/3+1) + 1;
+ sqlite3_randomness(sizeof(p->iPrn), &p->iPrn);
+ sqlite3_result_blob(context, p, sizeof(p), sqlite3_free);
+}
+static const FuncDef stat3InitFuncdef = {
+ 2, /* nArg */
+ SQLITE_UTF8, /* iPrefEnc */
+ 0, /* flags */
+ 0, /* pUserData */
+ 0, /* pNext */
+ stat3Init, /* xFunc */
+ 0, /* xStep */
+ 0, /* xFinalize */
+ "stat3_init", /* zName */
+ 0, /* pHash */
+ 0 /* pDestructor */
+};
+
+
+/*
+** Implementation of the stat3_push(nEq,nLt,nDLt,rowid,P) SQL function. The
+** arguments describe a single key instance. This routine makes the
+** decision about whether or not to retain this key for the sqlite_stat3
+** table.
+**
+** The return value is NULL.
+*/
+static void stat3Push(
+ sqlite3_context *context,
+ int argc,
+ sqlite3_value **argv
+){
+ Stat3Accum *p = (Stat3Accum*)sqlite3_value_blob(argv[4]);
+ tRowcnt nEq = sqlite3_value_int64(argv[0]);
+ tRowcnt nLt = sqlite3_value_int64(argv[1]);
+ tRowcnt nDLt = sqlite3_value_int64(argv[2]);
+ i64 rowid = sqlite3_value_int64(argv[3]);
+ u8 isPSample = 0;
+ u8 doInsert = 0;
+ int iMin = p->iMin;
+ struct Stat3Sample *pSample;
+ int i;
+ u32 h;
+
+ UNUSED_PARAMETER(context);
+ UNUSED_PARAMETER(argc);
+ if( nEq==0 ) return;
+ h = p->iPrn = p->iPrn*1103515245 + 12345;
+ if( (nLt/p->nPSample)!=((nEq+nLt)/p->nPSample) ){
+ doInsert = isPSample = 1;
+ }else if( p->nSample<p->mxSample ){
+ doInsert = 1;
+ }else{
+ if( nEq>p->a[iMin].nEq || (nEq==p->a[iMin].nEq && h>p->a[iMin].iHash) ){
+ doInsert = 1;
+ }
+ }
+ if( !doInsert ) return;
+ if( p->nSample==p->mxSample ){
+ assert( p->nSample - iMin - 1 >= 0 );
+ memmove(&p->a[iMin], &p->a[iMin+1], sizeof(p->a[0])*(p->nSample-iMin-1));
+ pSample = &p->a[p->nSample-1];
+ }else{
+ pSample = &p->a[p->nSample++];
+ }
+ pSample->iRowid = rowid;
+ pSample->nEq = nEq;
+ pSample->nLt = nLt;
+ pSample->nDLt = nDLt;
+ pSample->iHash = h;
+ pSample->isPSample = isPSample;
+
+ /* Find the new minimum */
+ if( p->nSample==p->mxSample ){
+ pSample = p->a;
+ i = 0;
+ while( pSample->isPSample ){
+ i++;
+ pSample++;
+ assert( i<p->nSample );
+ }
+ nEq = pSample->nEq;
+ h = pSample->iHash;
+ iMin = i;
+ for(i++, pSample++; i<p->nSample; i++, pSample++){
+ if( pSample->isPSample ) continue;
+ if( pSample->nEq<nEq
+ || (pSample->nEq==nEq && pSample->iHash<h)
+ ){
+ iMin = i;
+ nEq = pSample->nEq;
+ h = pSample->iHash;
+ }
+ }
+ p->iMin = iMin;
+ }
+}
+static const FuncDef stat3PushFuncdef = {
+ 5, /* nArg */
+ SQLITE_UTF8, /* iPrefEnc */
+ 0, /* flags */
+ 0, /* pUserData */
+ 0, /* pNext */
+ stat3Push, /* xFunc */
+ 0, /* xStep */
+ 0, /* xFinalize */
+ "stat3_push", /* zName */
+ 0, /* pHash */
+ 0 /* pDestructor */
+};
+
+/*
+** Implementation of the stat3_get(P,N,...) SQL function. This routine is
+** used to query the results. Content is returned for the Nth sqlite_stat3
+** row where N is between 0 and S-1 and S is the number of samples. The
+** value returned depends on the number of arguments.
+**
+** argc==2 result: rowid
+** argc==3 result: nEq
+** argc==4 result: nLt
+** argc==5 result: nDLt
+*/
+static void stat3Get(
+ sqlite3_context *context,
+ int argc,
+ sqlite3_value **argv
+){
+ int n = sqlite3_value_int(argv[1]);
+ Stat3Accum *p = (Stat3Accum*)sqlite3_value_blob(argv[0]);
+
+ assert( p!=0 );
+ if( p->nSample<=n ) return;
+ switch( argc ){
+ case 2: sqlite3_result_int64(context, p->a[n].iRowid); break;
+ case 3: sqlite3_result_int64(context, p->a[n].nEq); break;
+ case 4: sqlite3_result_int64(context, p->a[n].nLt); break;
+ default: sqlite3_result_int64(context, p->a[n].nDLt); break;
+ }
+}
+static const FuncDef stat3GetFuncdef = {
+ -1, /* nArg */
+ SQLITE_UTF8, /* iPrefEnc */
+ 0, /* flags */
+ 0, /* pUserData */
+ 0, /* pNext */
+ stat3Get, /* xFunc */
+ 0, /* xStep */
+ 0, /* xFinalize */
+ "stat3_get", /* zName */
+ 0, /* pHash */
+ 0 /* pDestructor */
+};
+#endif /* SQLITE_ENABLE_STAT3 */
+
+
+
+
+/*
** Generate code to do an analysis of all indices associated with
** a single table.
*/
static void analyzeOneTable(
Parse *pParse, /* Parser context */
Table *pTab, /* Table whose indices are to be analyzed */
+ Index *pOnlyIdx, /* If not NULL, only analyze this one index */
int iStatCur, /* Index of VdbeCursor that writes the sqlite_stat1 table */
int iMem /* Available memory locations begin here */
){
@@ -73480,24 +79568,31 @@
int i; /* Loop counter */
int topOfLoop; /* The top of the loop */
int endOfLoop; /* The end of the loop */
- int addr = 0; /* The address of an instruction */
- int jZeroRows = 0; /* Jump from here if number of rows is zero */
+ int jZeroRows = -1; /* Jump from here if number of rows is zero */
int iDb; /* Index of database containing pTab */
int regTabname = iMem++; /* Register containing table name */
int regIdxname = iMem++; /* Register containing index name */
- int regSampleno = iMem++; /* Register containing next sample number */
- int regCol = iMem++; /* Content of a column analyzed table */
+ int regStat1 = iMem++; /* The stat column of sqlite_stat1 */
+#ifdef SQLITE_ENABLE_STAT3
+ int regNumEq = regStat1; /* Number of instances. Same as regStat1 */
+ int regNumLt = iMem++; /* Number of keys less than regSample */
+ int regNumDLt = iMem++; /* Number of distinct keys less than regSample */
+ int regSample = iMem++; /* The next sample value */
+ int regRowid = regSample; /* Rowid of a sample */
+ int regAccum = iMem++; /* Register to hold Stat3Accum object */
+ int regLoop = iMem++; /* Loop counter */
+ int regCount = iMem++; /* Number of rows in the table or index */
+ int regTemp1 = iMem++; /* Intermediate register */
+ int regTemp2 = iMem++; /* Intermediate register */
+ int once = 1; /* One-time initialization */
+ int shortJump = 0; /* Instruction address */
+ int iTabCur = pParse->nTab++; /* Table cursor */
+#endif
+ int regCol = iMem++; /* Content of a column in analyzed table */
int regRec = iMem++; /* Register holding completed record */
int regTemp = iMem++; /* Temporary use register */
- int regRowid = iMem++; /* Rowid for the inserted record */
+ int regNewRowid = iMem++; /* Rowid for the inserted record */
-#ifdef SQLITE_ENABLE_STAT2
- int regTemp2 = iMem++; /* Temporary use register */
- int regSamplerecno = iMem++; /* Index of next sample to record */
- int regRecno = iMem++; /* Current sample index */
- int regLast = iMem++; /* Index of last sample to record */
- int regFirst = iMem++; /* Index of first sample to record */
-#endif
v = sqlite3GetVdbe(pParse);
if( v==0 || NEVER(pTab==0) ){
@@ -73514,6 +79609,7 @@
assert( sqlite3BtreeHoldsAllMutexes(db) );
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
assert( iDb>=0 );
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
#ifndef SQLITE_OMIT_AUTHORIZATION
if( sqlite3AuthCheck(pParse, SQLITE_ANALYZE, pTab->zName, 0,
db->aDb[iDb].zName ) ){
@@ -73527,9 +79623,17 @@
iIdxCur = pParse->nTab++;
sqlite3VdbeAddOp4(v, OP_String8, 0, regTabname, 0, pTab->zName, 0);
for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
- int nCol = pIdx->nColumn;
- KeyInfo *pKey = sqlite3IndexKeyinfo(pParse, pIdx);
+ int nCol;
+ KeyInfo *pKey;
+ int addrIfNot = 0; /* address of OP_IfNot */
+ int *aChngAddr; /* Array of jump instruction addresses */
+ if( pOnlyIdx && pOnlyIdx!=pIdx ) continue;
+ VdbeNoopComment((v, "Begin analysis of %s", pIdx->zName));
+ nCol = pIdx->nColumn;
+ aChngAddr = sqlite3DbMallocRaw(db, sizeof(int)*nCol);
+ if( aChngAddr==0 ) continue;
+ pKey = sqlite3IndexKeyinfo(pParse, pIdx);
if( iMem+1+(nCol*2)>pParse->nMem ){
pParse->nMem = iMem+1+(nCol*2);
}
@@ -73543,31 +79647,21 @@
/* Populate the register containing the index name. */
sqlite3VdbeAddOp4(v, OP_String8, 0, regIdxname, 0, pIdx->zName, 0);
-#ifdef SQLITE_ENABLE_STAT2
-
- /* If this iteration of the loop is generating code to analyze the
- ** first index in the pTab->pIndex list, then register regLast has
- ** not been populated. In this case populate it now. */
- if( pTab->pIndex==pIdx ){
- sqlite3VdbeAddOp2(v, OP_Integer, SQLITE_INDEX_SAMPLES, regSamplerecno);
- sqlite3VdbeAddOp2(v, OP_Integer, SQLITE_INDEX_SAMPLES*2-1, regTemp);
- sqlite3VdbeAddOp2(v, OP_Integer, SQLITE_INDEX_SAMPLES*2, regTemp2);
-
- sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regLast);
- sqlite3VdbeAddOp2(v, OP_Null, 0, regFirst);
- addr = sqlite3VdbeAddOp3(v, OP_Lt, regSamplerecno, 0, regLast);
- sqlite3VdbeAddOp3(v, OP_Divide, regTemp2, regLast, regFirst);
- sqlite3VdbeAddOp3(v, OP_Multiply, regLast, regTemp, regLast);
- sqlite3VdbeAddOp2(v, OP_AddImm, regLast, SQLITE_INDEX_SAMPLES*2-2);
- sqlite3VdbeAddOp3(v, OP_Divide, regTemp2, regLast, regLast);
- sqlite3VdbeJumpHere(v, addr);
+#ifdef SQLITE_ENABLE_STAT3
+ if( once ){
+ once = 0;
+ sqlite3OpenTable(pParse, iTabCur, iDb, pTab, OP_OpenRead);
}
-
- /* Zero the regSampleno and regRecno registers. */
- sqlite3VdbeAddOp2(v, OP_Integer, 0, regSampleno);
- sqlite3VdbeAddOp2(v, OP_Integer, 0, regRecno);
- sqlite3VdbeAddOp2(v, OP_Copy, regFirst, regSamplerecno);
-#endif
+ sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regCount);
+ sqlite3VdbeAddOp2(v, OP_Integer, SQLITE_STAT3_SAMPLES, regTemp1);
+ sqlite3VdbeAddOp2(v, OP_Integer, 0, regNumEq);
+ sqlite3VdbeAddOp2(v, OP_Integer, 0, regNumLt);
+ sqlite3VdbeAddOp2(v, OP_Integer, -1, regNumDLt);
+ sqlite3VdbeAddOp3(v, OP_Null, 0, regSample, regAccum);
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regCount, regAccum,
+ (char*)&stat3InitFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 2);
+#endif /* SQLITE_ENABLE_STAT3 */
/* The block of memory cells initialized here is used as follows.
**
@@ -73597,65 +79691,83 @@
endOfLoop = sqlite3VdbeMakeLabel(v);
sqlite3VdbeAddOp2(v, OP_Rewind, iIdxCur, endOfLoop);
topOfLoop = sqlite3VdbeCurrentAddr(v);
- sqlite3VdbeAddOp2(v, OP_AddImm, iMem, 1);
+ sqlite3VdbeAddOp2(v, OP_AddImm, iMem, 1); /* Increment row counter */
for(i=0; i<nCol; i++){
+ CollSeq *pColl;
sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, i, regCol);
-#ifdef SQLITE_ENABLE_STAT2
if( i==0 ){
- /* Check if the record that cursor iIdxCur points to contains a
- ** value that should be stored in the sqlite_stat2 table. If so,
- ** store it. */
- int ne = sqlite3VdbeAddOp3(v, OP_Ne, regRecno, 0, regSamplerecno);
- assert( regTabname+1==regIdxname
- && regTabname+2==regSampleno
- && regTabname+3==regCol
- );
- sqlite3VdbeChangeP5(v, SQLITE_JUMPIFNULL);
- sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 4, regRec, "aaab", 0);
- sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur+1, regRowid);
- sqlite3VdbeAddOp3(v, OP_Insert, iStatCur+1, regRec, regRowid);
-
- /* Calculate new values for regSamplerecno and regSampleno.
- **
- ** sampleno = sampleno + 1
- ** samplerecno = samplerecno+(remaining records)/(remaining samples)
- */
- sqlite3VdbeAddOp2(v, OP_AddImm, regSampleno, 1);
- sqlite3VdbeAddOp3(v, OP_Subtract, regRecno, regLast, regTemp);
- sqlite3VdbeAddOp2(v, OP_AddImm, regTemp, -1);
- sqlite3VdbeAddOp2(v, OP_Integer, SQLITE_INDEX_SAMPLES, regTemp2);
- sqlite3VdbeAddOp3(v, OP_Subtract, regSampleno, regTemp2, regTemp2);
- sqlite3VdbeAddOp3(v, OP_Divide, regTemp2, regTemp, regTemp);
- sqlite3VdbeAddOp3(v, OP_Add, regSamplerecno, regTemp, regSamplerecno);
-
- sqlite3VdbeJumpHere(v, ne);
- sqlite3VdbeAddOp2(v, OP_AddImm, regRecno, 1);
+ /* Always record the very first row */
+ addrIfNot = sqlite3VdbeAddOp1(v, OP_IfNot, iMem+1);
+ }
+ assert( pIdx->azColl!=0 );
+ assert( pIdx->azColl[i]!=0 );
+ pColl = sqlite3LocateCollSeq(pParse, pIdx->azColl[i]);
+ aChngAddr[i] = sqlite3VdbeAddOp4(v, OP_Ne, regCol, 0, iMem+nCol+i+1,
+ (char*)pColl, P4_COLLSEQ);
+ sqlite3VdbeChangeP5(v, SQLITE_NULLEQ);
+ VdbeComment((v, "jump if column %d changed", i));
+#ifdef SQLITE_ENABLE_STAT3
+ if( i==0 ){
+ sqlite3VdbeAddOp2(v, OP_AddImm, regNumEq, 1);
+ VdbeComment((v, "incr repeat count"));
}
#endif
-
- sqlite3VdbeAddOp3(v, OP_Ne, regCol, 0, iMem+nCol+i+1);
- /**** TODO: add collating sequence *****/
- sqlite3VdbeChangeP5(v, SQLITE_JUMPIFNULL);
- }
- if( db->mallocFailed ){
- /* If a malloc failure has occurred, then the result of the expression
- ** passed as the second argument to the call to sqlite3VdbeJumpHere()
- ** below may be negative. Which causes an assert() to fail (or an
- ** out-of-bounds write if SQLITE_DEBUG is not defined). */
- return;
}
sqlite3VdbeAddOp2(v, OP_Goto, 0, endOfLoop);
for(i=0; i<nCol; i++){
- sqlite3VdbeJumpHere(v, sqlite3VdbeCurrentAddr(v)-(nCol*2));
+ sqlite3VdbeJumpHere(v, aChngAddr[i]); /* Set jump dest for the OP_Ne */
+ if( i==0 ){
+ sqlite3VdbeJumpHere(v, addrIfNot); /* Jump dest for OP_IfNot */
+#ifdef SQLITE_ENABLE_STAT3
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regNumEq, regTemp2,
+ (char*)&stat3PushFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 5);
+ sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, pIdx->nColumn, regRowid);
+ sqlite3VdbeAddOp3(v, OP_Add, regNumEq, regNumLt, regNumLt);
+ sqlite3VdbeAddOp2(v, OP_AddImm, regNumDLt, 1);
+ sqlite3VdbeAddOp2(v, OP_Integer, 1, regNumEq);
+#endif
+ }
sqlite3VdbeAddOp2(v, OP_AddImm, iMem+i+1, 1);
sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, i, iMem+nCol+i+1);
}
+ sqlite3DbFree(db, aChngAddr);
- /* End of the analysis loop. */
+ /* Always jump here after updating the iMem+1...iMem+1+nCol counters */
sqlite3VdbeResolveLabel(v, endOfLoop);
+
sqlite3VdbeAddOp2(v, OP_Next, iIdxCur, topOfLoop);
sqlite3VdbeAddOp1(v, OP_Close, iIdxCur);
+#ifdef SQLITE_ENABLE_STAT3
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regNumEq, regTemp2,
+ (char*)&stat3PushFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 5);
+ sqlite3VdbeAddOp2(v, OP_Integer, -1, regLoop);
+ shortJump =
+ sqlite3VdbeAddOp2(v, OP_AddImm, regLoop, 1);
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regAccum, regTemp1,
+ (char*)&stat3GetFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 2);
+ sqlite3VdbeAddOp1(v, OP_IsNull, regTemp1);
+ sqlite3VdbeAddOp3(v, OP_NotExists, iTabCur, shortJump, regTemp1);
+ sqlite3VdbeAddOp3(v, OP_Column, iTabCur, pIdx->aiColumn[0], regSample);
+ sqlite3ColumnDefault(v, pTab, pIdx->aiColumn[0], regSample);
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regAccum, regNumEq,
+ (char*)&stat3GetFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 3);
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regAccum, regNumLt,
+ (char*)&stat3GetFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 4);
+ sqlite3VdbeAddOp4(v, OP_Function, 1, regAccum, regNumDLt,
+ (char*)&stat3GetFuncdef, P4_FUNCDEF);
+ sqlite3VdbeChangeP5(v, 5);
+ sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 6, regRec, "bbbbbb", 0);
+ sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur+1, regNewRowid);
+ sqlite3VdbeAddOp3(v, OP_Insert, iStatCur+1, regRec, regNewRowid);
+ sqlite3VdbeAddOp2(v, OP_Goto, 0, shortJump);
+ sqlite3VdbeJumpHere(v, shortJump+2);
+#endif
/* Store the results in sqlite_stat1.
**
@@ -73675,22 +79787,22 @@
** If K>0 then it is always the case the D>0 so division by zero
** is never possible.
*/
- sqlite3VdbeAddOp2(v, OP_SCopy, iMem, regSampleno);
- if( jZeroRows==0 ){
+ sqlite3VdbeAddOp2(v, OP_SCopy, iMem, regStat1);
+ if( jZeroRows<0 ){
jZeroRows = sqlite3VdbeAddOp1(v, OP_IfNot, iMem);
}
for(i=0; i<nCol; i++){
sqlite3VdbeAddOp4(v, OP_String8, 0, regTemp, 0, " ", 0);
- sqlite3VdbeAddOp3(v, OP_Concat, regTemp, regSampleno, regSampleno);
+ sqlite3VdbeAddOp3(v, OP_Concat, regTemp, regStat1, regStat1);
sqlite3VdbeAddOp3(v, OP_Add, iMem, iMem+i+1, regTemp);
sqlite3VdbeAddOp2(v, OP_AddImm, regTemp, -1);
sqlite3VdbeAddOp3(v, OP_Divide, iMem+i+1, regTemp, regTemp);
sqlite3VdbeAddOp1(v, OP_ToInt, regTemp);
- sqlite3VdbeAddOp3(v, OP_Concat, regTemp, regSampleno, regSampleno);
+ sqlite3VdbeAddOp3(v, OP_Concat, regTemp, regStat1, regStat1);
}
sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 3, regRec, "aaa", 0);
- sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regRowid);
- sqlite3VdbeAddOp3(v, OP_Insert, iStatCur, regRec, regRowid);
+ sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regNewRowid);
+ sqlite3VdbeAddOp3(v, OP_Insert, iStatCur, regRec, regNewRowid);
sqlite3VdbeChangeP5(v, OPFLAG_APPEND);
}
@@ -73700,24 +79812,23 @@
if( pTab->pIndex==0 ){
sqlite3VdbeAddOp3(v, OP_OpenRead, iIdxCur, pTab->tnum, iDb);
VdbeComment((v, "%s", pTab->zName));
- sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regSampleno);
+ sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regStat1);
sqlite3VdbeAddOp1(v, OP_Close, iIdxCur);
+ jZeroRows = sqlite3VdbeAddOp1(v, OP_IfNot, regStat1);
}else{
- assert( jZeroRows>0 );
- addr = sqlite3VdbeAddOp0(v, OP_Goto);
sqlite3VdbeJumpHere(v, jZeroRows);
+ jZeroRows = sqlite3VdbeAddOp0(v, OP_Goto);
}
sqlite3VdbeAddOp2(v, OP_Null, 0, regIdxname);
sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 3, regRec, "aaa", 0);
- sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regRowid);
- sqlite3VdbeAddOp3(v, OP_Insert, iStatCur, regRec, regRowid);
+ sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regNewRowid);
+ sqlite3VdbeAddOp3(v, OP_Insert, iStatCur, regRec, regNewRowid);
sqlite3VdbeChangeP5(v, OPFLAG_APPEND);
if( pParse->nMem<regRec ) pParse->nMem = regRec;
- if( jZeroRows ){
- sqlite3VdbeJumpHere(v, addr);
- }
+ sqlite3VdbeJumpHere(v, jZeroRows);
}
+
/*
** Generate code that will cause the most recent index analysis to
** be loaded into internal hash tables where is can be used.
@@ -73741,21 +79852,23 @@
sqlite3BeginWriteOperation(pParse, 0, iDb);
iStatCur = pParse->nTab;
- pParse->nTab += 2;
- openStatTable(pParse, iDb, iStatCur, 0);
+ pParse->nTab += 3;
+ openStatTable(pParse, iDb, iStatCur, 0, 0);
iMem = pParse->nMem+1;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
for(k=sqliteHashFirst(&pSchema->tblHash); k; k=sqliteHashNext(k)){
Table *pTab = (Table*)sqliteHashData(k);
- analyzeOneTable(pParse, pTab, iStatCur, iMem);
+ analyzeOneTable(pParse, pTab, 0, iStatCur, iMem);
}
loadAnalysis(pParse, iDb);
}
/*
** Generate code that will do an analysis of a single table in
-** a database.
+** a database. If pOnlyIdx is not NULL then it is a single index
+** in pTab that should be analyzed.
*/
-static void analyzeTable(Parse *pParse, Table *pTab){
+static void analyzeTable(Parse *pParse, Table *pTab, Index *pOnlyIdx){
int iDb;
int iStatCur;
@@ -73764,9 +79877,13 @@
iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema);
sqlite3BeginWriteOperation(pParse, 0, iDb);
iStatCur = pParse->nTab;
- pParse->nTab += 2;
- openStatTable(pParse, iDb, iStatCur, pTab->zName);
- analyzeOneTable(pParse, pTab, iStatCur, pParse->nMem+1);
+ pParse->nTab += 3;
+ if( pOnlyIdx ){
+ openStatTable(pParse, iDb, iStatCur, pOnlyIdx->zName, "idx");
+ }else{
+ openStatTable(pParse, iDb, iStatCur, pTab->zName, "tbl");
+ }
+ analyzeOneTable(pParse, pTab, pOnlyIdx, iStatCur, pParse->nMem+1);
loadAnalysis(pParse, iDb);
}
@@ -73788,6 +79905,7 @@
int i;
char *z, *zDb;
Table *pTab;
+ Index *pIdx;
Token *pTableName;
/* Read the database schema. If an error occurs, leave an error message
@@ -73812,11 +79930,12 @@
}else{
z = sqlite3NameFromToken(db, pName1);
if( z ){
- pTab = sqlite3LocateTable(pParse, 0, z, 0);
- sqlite3DbFree(db, z);
- if( pTab ){
- analyzeTable(pParse, pTab);
+ if( (pIdx = sqlite3FindIndex(db, z, 0))!=0 ){
+ analyzeTable(pParse, pIdx->pTable, pIdx);
+ }else if( (pTab = sqlite3LocateTable(pParse, 0, z, 0))!=0 ){
+ analyzeTable(pParse, pTab, 0);
}
+ sqlite3DbFree(db, z);
}
}
}else{
@@ -73826,11 +79945,12 @@
zDb = db->aDb[iDb].zName;
z = sqlite3NameFromToken(db, pTableName);
if( z ){
- pTab = sqlite3LocateTable(pParse, 0, z, zDb);
- sqlite3DbFree(db, z);
- if( pTab ){
- analyzeTable(pParse, pTab);
+ if( (pIdx = sqlite3FindIndex(db, z, zDb))!=0 ){
+ analyzeTable(pParse, pIdx->pTable, pIdx);
+ }else if( (pTab = sqlite3LocateTable(pParse, 0, z, zDb))!=0 ){
+ analyzeTable(pParse, pTab, 0);
}
+ sqlite3DbFree(db, z);
}
}
}
@@ -73862,7 +79982,7 @@
Index *pIndex;
Table *pTable;
int i, c, n;
- unsigned int v;
+ tRowcnt v;
const char *z;
assert( argc==3 );
@@ -73892,6 +80012,10 @@
if( pIndex==0 ) break;
pIndex->aiRowEst[i] = v;
if( *z==' ' ) z++;
+ if( memcmp(z, "unordered", 10)==0 ){
+ pIndex->bUnordered = 1;
+ break;
+ }
}
return 0;
}
@@ -73901,10 +80025,10 @@
** and its contents.
*/
SQLITE_PRIVATE void sqlite3DeleteIndexSamples(sqlite3 *db, Index *pIdx){
-#ifdef SQLITE_ENABLE_STAT2
+#ifdef SQLITE_ENABLE_STAT3
if( pIdx->aSample ){
int j;
- for(j=0; j<SQLITE_INDEX_SAMPLES; j++){
+ for(j=0; j<pIdx->nSample; j++){
IndexSample *p = &pIdx->aSample[j];
if( p->eType==SQLITE_TEXT || p->eType==SQLITE_BLOB ){
sqlite3DbFree(db, p->u.z);
@@ -73912,25 +80036,157 @@
}
sqlite3DbFree(db, pIdx->aSample);
}
+ if( db && db->pnBytesFreed==0 ){
+ pIdx->nSample = 0;
+ pIdx->aSample = 0;
+ }
#else
UNUSED_PARAMETER(db);
UNUSED_PARAMETER(pIdx);
#endif
}
+#ifdef SQLITE_ENABLE_STAT3
/*
-** Load the content of the sqlite_stat1 and sqlite_stat2 tables. The
+** Load content from the sqlite_stat3 table into the Index.aSample[]
+** arrays of all indices.
+*/
+static int loadStat3(sqlite3 *db, const char *zDb){
+ int rc; /* Result codes from subroutines */
+ sqlite3_stmt *pStmt = 0; /* An SQL statement being run */
+ char *zSql; /* Text of the SQL statement */
+ Index *pPrevIdx = 0; /* Previous index in the loop */
+ int idx = 0; /* slot in pIdx->aSample[] for next sample */
+ int eType; /* Datatype of a sample */
+ IndexSample *pSample; /* A slot in pIdx->aSample[] */
+
+ if( !sqlite3FindTable(db, "sqlite_stat3", zDb) ){
+ return SQLITE_OK;
+ }
+
+ zSql = sqlite3MPrintf(db,
+ "SELECT idx,count(*) FROM %Q.sqlite_stat3"
+ " GROUP BY idx", zDb);
+ if( !zSql ){
+ return SQLITE_NOMEM;
+ }
+ rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0);
+ sqlite3DbFree(db, zSql);
+ if( rc ) return rc;
+
+ while( sqlite3_step(pStmt)==SQLITE_ROW ){
+ char *zIndex; /* Index name */
+ Index *pIdx; /* Pointer to the index object */
+ int nSample; /* Number of samples */
+
+ zIndex = (char *)sqlite3_column_text(pStmt, 0);
+ if( zIndex==0 ) continue;
+ nSample = sqlite3_column_int(pStmt, 1);
+ pIdx = sqlite3FindIndex(db, zIndex, zDb);
+ if( pIdx==0 ) continue;
+ assert( pIdx->nSample==0 );
+ pIdx->nSample = nSample;
+ pIdx->aSample = sqlite3MallocZero( nSample*sizeof(IndexSample) );
+ pIdx->avgEq = pIdx->aiRowEst[1];
+ if( pIdx->aSample==0 ){
+ db->mallocFailed = 1;
+ sqlite3_finalize(pStmt);
+ return SQLITE_NOMEM;
+ }
+ }
+ rc = sqlite3_finalize(pStmt);
+ if( rc ) return rc;
+
+ zSql = sqlite3MPrintf(db,
+ "SELECT idx,neq,nlt,ndlt,sample FROM %Q.sqlite_stat3", zDb);
+ if( !zSql ){
+ return SQLITE_NOMEM;
+ }
+ rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0);
+ sqlite3DbFree(db, zSql);
+ if( rc ) return rc;
+
+ while( sqlite3_step(pStmt)==SQLITE_ROW ){
+ char *zIndex; /* Index name */
+ Index *pIdx; /* Pointer to the index object */
+ int i; /* Loop counter */
+ tRowcnt sumEq; /* Sum of the nEq values */
+
+ zIndex = (char *)sqlite3_column_text(pStmt, 0);
+ if( zIndex==0 ) continue;
+ pIdx = sqlite3FindIndex(db, zIndex, zDb);
+ if( pIdx==0 ) continue;
+ if( pIdx==pPrevIdx ){
+ idx++;
+ }else{
+ pPrevIdx = pIdx;
+ idx = 0;
+ }
+ assert( idx<pIdx->nSample );
+ pSample = &pIdx->aSample[idx];
+ pSample->nEq = (tRowcnt)sqlite3_column_int64(pStmt, 1);
+ pSample->nLt = (tRowcnt)sqlite3_column_int64(pStmt, 2);
+ pSample->nDLt = (tRowcnt)sqlite3_column_int64(pStmt, 3);
+ if( idx==pIdx->nSample-1 ){
+ if( pSample->nDLt>0 ){
+ for(i=0, sumEq=0; i<=idx-1; i++) sumEq += pIdx->aSample[i].nEq;
+ pIdx->avgEq = (pSample->nLt - sumEq)/pSample->nDLt;
+ }
+ if( pIdx->avgEq<=0 ) pIdx->avgEq = 1;
+ }
+ eType = sqlite3_column_type(pStmt, 4);
+ pSample->eType = (u8)eType;
+ switch( eType ){
+ case SQLITE_INTEGER: {
+ pSample->u.i = sqlite3_column_int64(pStmt, 4);
+ break;
+ }
+ case SQLITE_FLOAT: {
+ pSample->u.r = sqlite3_column_double(pStmt, 4);
+ break;
+ }
+ case SQLITE_NULL: {
+ break;
+ }
+ default: assert( eType==SQLITE_TEXT || eType==SQLITE_BLOB ); {
+ const char *z = (const char *)(
+ (eType==SQLITE_BLOB) ?
+ sqlite3_column_blob(pStmt, 4):
+ sqlite3_column_text(pStmt, 4)
+ );
+ int n = z ? sqlite3_column_bytes(pStmt, 4) : 0;
+ pSample->nByte = n;
+ if( n < 1){
+ pSample->u.z = 0;
+ }else{
+ pSample->u.z = sqlite3Malloc(n);
+ if( pSample->u.z==0 ){
+ db->mallocFailed = 1;
+ sqlite3_finalize(pStmt);
+ return SQLITE_NOMEM;
+ }
+ memcpy(pSample->u.z, z, n);
+ }
+ }
+ }
+ }
+ return sqlite3_finalize(pStmt);
+}
+#endif /* SQLITE_ENABLE_STAT3 */
+
+/*
+** Load the content of the sqlite_stat1 and sqlite_stat3 tables. The
** contents of sqlite_stat1 are used to populate the Index.aiRowEst[]
-** arrays. The contents of sqlite_stat2 are used to populate the
+** arrays. The contents of sqlite_stat3 are used to populate the
** Index.aSample[] arrays.
**
** If the sqlite_stat1 table is not present in the database, SQLITE_ERROR
-** is returned. In this case, even if SQLITE_ENABLE_STAT2 was defined
-** during compilation and the sqlite_stat2 table is present, no data is
+** is returned. In this case, even if SQLITE_ENABLE_STAT3 was defined
+** during compilation and the sqlite_stat3 table is present, no data is
** read from it.
**
-** If SQLITE_ENABLE_STAT2 was defined during compilation and the
-** sqlite_stat2 table is not present in the database, SQLITE_ERROR is
+** If SQLITE_ENABLE_STAT3 was defined during compilation and the
+** sqlite_stat3 table is not present in the database, SQLITE_ERROR is
** returned. However, in this case, data is read from the sqlite_stat1
** table (if it is present) before returning.
**
@@ -73946,14 +80202,16 @@
assert( iDb>=0 && iDb<db->nDb );
assert( db->aDb[iDb].pBt!=0 );
- assert( sqlite3BtreeHoldsMutex(db->aDb[iDb].pBt) );
/* Clear any prior statistics */
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
for(i=sqliteHashFirst(&db->aDb[iDb].pSchema->idxHash);i;i=sqliteHashNext(i)){
Index *pIdx = sqliteHashData(i);
sqlite3DefaultRowEst(pIdx);
+#ifdef SQLITE_ENABLE_STAT3
sqlite3DeleteIndexSamples(db, pIdx);
pIdx->aSample = 0;
+#endif
}
/* Check to make sure the sqlite_stat1 table exists */
@@ -73965,7 +80223,7 @@
/* Load new statistics out of the sqlite_stat1 table */
zSql = sqlite3MPrintf(db,
- "SELECT tbl, idx, stat FROM %Q.sqlite_stat1", sInfo.zDatabase);
+ "SELECT tbl,idx,stat FROM %Q.sqlite_stat1", sInfo.zDatabase);
if( zSql==0 ){
rc = SQLITE_NOMEM;
}else{
@@ -73974,75 +80232,10 @@
}
- /* Load the statistics from the sqlite_stat2 table. */
-#ifdef SQLITE_ENABLE_STAT2
- if( rc==SQLITE_OK && !sqlite3FindTable(db, "sqlite_stat2", sInfo.zDatabase) ){
- rc = SQLITE_ERROR;
- }
+ /* Load the statistics from the sqlite_stat3 table. */
+#ifdef SQLITE_ENABLE_STAT3
if( rc==SQLITE_OK ){
- sqlite3_stmt *pStmt = 0;
-
- zSql = sqlite3MPrintf(db,
- "SELECT idx,sampleno,sample FROM %Q.sqlite_stat2", sInfo.zDatabase);
- if( !zSql ){
- rc = SQLITE_NOMEM;
- }else{
- rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0);
- sqlite3DbFree(db, zSql);
- }
-
- if( rc==SQLITE_OK ){
- while( sqlite3_step(pStmt)==SQLITE_ROW ){
- char *zIndex = (char *)sqlite3_column_text(pStmt, 0);
- Index *pIdx = sqlite3FindIndex(db, zIndex, sInfo.zDatabase);
- if( pIdx ){
- int iSample = sqlite3_column_int(pStmt, 1);
- if( iSample<SQLITE_INDEX_SAMPLES && iSample>=0 ){
- int eType = sqlite3_column_type(pStmt, 2);
-
- if( pIdx->aSample==0 ){
- static const int sz = sizeof(IndexSample)*SQLITE_INDEX_SAMPLES;
- pIdx->aSample = (IndexSample *)sqlite3DbMallocRaw(0, sz);
- if( pIdx->aSample==0 ){
- db->mallocFailed = 1;
- break;
- }
- memset(pIdx->aSample, 0, sz);
- }
-
- assert( pIdx->aSample );
- {
- IndexSample *pSample = &pIdx->aSample[iSample];
- pSample->eType = (u8)eType;
- if( eType==SQLITE_INTEGER || eType==SQLITE_FLOAT ){
- pSample->u.r = sqlite3_column_double(pStmt, 2);
- }else if( eType==SQLITE_TEXT || eType==SQLITE_BLOB ){
- const char *z = (const char *)(
- (eType==SQLITE_BLOB) ?
- sqlite3_column_blob(pStmt, 2):
- sqlite3_column_text(pStmt, 2)
- );
- int n = sqlite3_column_bytes(pStmt, 2);
- if( n>24 ){
- n = 24;
- }
- pSample->nByte = (u8)n;
- if( n < 1){
- pSample->u.z = 0;
- }else{
- pSample->u.z = sqlite3DbStrNDup(0, z, n);
- if( pSample->u.z==0 ){
- db->mallocFailed = 1;
- break;
- }
- }
- }
- }
- }
- }
- }
- rc = sqlite3_finalize(pStmt);
- }
+ rc = loadStat3(db, sInfo.zDatabase);
}
#endif
@@ -74128,8 +80321,12 @@
sqlite3 *db = sqlite3_context_db_handle(context);
const char *zName;
const char *zFile;
+ char *zPath = 0;
+ char *zErr = 0;
+ unsigned int flags;
Db *aNew;
char *zErrDyn = 0;
+ sqlite3_vfs *pVfs;
UNUSED_PARAMETER(NotUsed);
@@ -74182,8 +80379,18 @@
** it to obtain the database schema. At this point the schema may
** or may not be initialised.
*/
- rc = sqlite3BtreeOpen(zFile, db, &aNew->pBt, 0,
- db->openFlags | SQLITE_OPEN_MAIN_DB);
+ flags = db->openFlags;
+ rc = sqlite3ParseUri(db->pVfs->zName, zFile, &flags, &pVfs, &zPath, &zErr);
+ if( rc!=SQLITE_OK ){
+ if( rc==SQLITE_NOMEM ) db->mallocFailed = 1;
+ sqlite3_result_error(context, zErr, -1);
+ sqlite3_free(zErr);
+ return;
+ }
+ assert( pVfs );
+ flags |= SQLITE_OPEN_MAIN_DB;
+ rc = sqlite3BtreeOpen(pVfs, zPath, db, &aNew->pBt, 0, flags);
+ sqlite3_free( zPath );
db->nDb++;
if( rc==SQLITE_CONSTRAINT ){
rc = SQLITE_ERROR;
@@ -74234,7 +80441,9 @@
case SQLITE_NULL:
/* No key specified. Use the key from the main database */
sqlite3CodecGetKey(db, 0, (void**)&zKey, &nKey);
- rc = sqlite3CodecAttach(db, db->nDb-1, zKey, nKey);
+ if( nKey>0 || sqlite3BtreeGetReserve(db->aDb[0].pBt)>0 ){
+ rc = sqlite3CodecAttach(db, db->nDb-1, zKey, nKey);
+ }
break;
}
}
@@ -74258,7 +80467,7 @@
db->aDb[iDb].pBt = 0;
db->aDb[iDb].pSchema = 0;
}
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
db->nDb = iDb;
if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ){
db->mallocFailed = 1;
@@ -74330,7 +80539,7 @@
sqlite3BtreeClose(pDb->pBt);
pDb->pBt = 0;
pDb->pSchema = 0;
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
return;
detach_error:
@@ -74370,9 +80579,11 @@
#ifndef SQLITE_OMIT_AUTHORIZATION
if( pAuthArg ){
- char *zAuthArg = pAuthArg->u.zToken;
- if( NEVER(zAuthArg==0) ){
- goto attach_end;
+ char *zAuthArg;
+ if( pAuthArg->op==TK_STRING ){
+ zAuthArg = pAuthArg->u.zToken;
+ }else{
+ zAuthArg = 0;
}
rc = sqlite3AuthCheck(pParse, type, zAuthArg, 0, 0);
if(rc!=SQLITE_OK ){
@@ -74998,7 +81209,7 @@
** on each used database.
*/
if( pParse->cookieGoto>0 ){
- u32 mask;
+ yDbMask mask;
int iDb;
sqlite3VdbeJumpHere(v, pParse->cookieGoto-1);
for(iDb=0, mask=1; iDb<db->nDb; mask<<=1, iDb++){
@@ -75006,7 +81217,10 @@
sqlite3VdbeUsesBtree(v, iDb);
sqlite3VdbeAddOp2(v,OP_Transaction, iDb, (mask & pParse->writeMask)!=0);
if( db->init.busy==0 ){
- sqlite3VdbeAddOp2(v,OP_VerifyCookie, iDb, pParse->cookieValue[iDb]);
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
+ sqlite3VdbeAddOp3(v, OP_VerifyCookie,
+ iDb, pParse->cookieValue[iDb],
+ db->aDb[iDb].pSchema->iGeneration);
}
}
#ifndef SQLITE_OMIT_VIRTUALTABLE
@@ -75047,9 +81261,7 @@
/* A minimum of one cursor is required if autoincrement is used
* See ticket [a696379c1f08866] */
if( pParse->pAinc!=0 && pParse->nTab==0 ) pParse->nTab = 1;
- sqlite3VdbeMakeReady(v, pParse->nVar, pParse->nMem,
- pParse->nTab, pParse->nMaxArg, pParse->explain,
- pParse->isMultiWrite && pParse->mayAbort);
+ sqlite3VdbeMakeReady(v, pParse);
pParse->rc = SQLITE_DONE;
pParse->colNamesSet = 0;
}else{
@@ -75119,9 +81331,12 @@
int nName;
assert( zName!=0 );
nName = sqlite3Strlen30(zName);
+ /* All mutexes are required for schema access. Make sure we hold them. */
+ assert( zDatabase!=0 || sqlite3BtreeHoldsAllMutexes(db) );
for(i=OMIT_TEMPDB; i<db->nDb; i++){
int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */
if( zDatabase!=0 && sqlite3StrICmp(zDatabase, db->aDb[j].zName) ) continue;
+ assert( sqlite3SchemaMutexHeld(db, j, 0) );
p = sqlite3HashFind(&db->aDb[j].pSchema->tblHash, zName, nName);
if( p ) break;
}
@@ -75181,11 +81396,14 @@
Index *p = 0;
int i;
int nName = sqlite3Strlen30(zName);
+ /* All mutexes are required for schema access. Make sure we hold them. */
+ assert( zDb!=0 || sqlite3BtreeHoldsAllMutexes(db) );
for(i=OMIT_TEMPDB; i<db->nDb; i++){
int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */
Schema *pSchema = db->aDb[j].pSchema;
assert( pSchema );
if( zDb && sqlite3StrICmp(zDb, db->aDb[j].zName) ) continue;
+ assert( sqlite3SchemaMutexHeld(db, j, 0) );
p = sqlite3HashFind(&pSchema->idxHash, zName, nName);
if( p ) break;
}
@@ -75212,11 +81430,13 @@
SQLITE_PRIVATE void sqlite3UnlinkAndDeleteIndex(sqlite3 *db, int iDb, const char *zIdxName){
Index *pIndex;
int len;
- Hash *pHash = &db->aDb[iDb].pSchema->idxHash;
+ Hash *pHash;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
+ pHash = &db->aDb[iDb].pSchema->idxHash;
len = sqlite3Strlen30(zIdxName);
pIndex = sqlite3HashInsert(pHash, zIdxName, len, 0);
- if( pIndex ){
+ if( ALWAYS(pIndex) ){
if( pIndex->pTable->pIndex==pIndex ){
pIndex->pTable->pIndex = pIndex->pNext;
}else{
@@ -75241,26 +81461,42 @@
** if there were schema changes during the transaction or if a
** schema-cookie mismatch occurs.
**
-** If iDb==0 then reset the internal schema tables for all database
-** files. If iDb>=1 then reset the internal schema for only the
+** If iDb<0 then reset the internal schema tables for all database
+** files. If iDb>=0 then reset the internal schema for only the
** single file indicated.
*/
SQLITE_PRIVATE void sqlite3ResetInternalSchema(sqlite3 *db, int iDb){
int i, j;
- assert( iDb>=0 && iDb<db->nDb );
+ assert( iDb<db->nDb );
- if( iDb==0 ){
- sqlite3BtreeEnterAll(db);
+ if( iDb>=0 ){
+ /* Case 1: Reset the single schema identified by iDb */
+ Db *pDb = &db->aDb[iDb];
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
+ assert( pDb->pSchema!=0 );
+ sqlite3SchemaClear(pDb->pSchema);
+
+ /* If any database other than TEMP is reset, then also reset TEMP
+ ** since TEMP might be holding triggers that reference tables in the
+ ** other database.
+ */
+ if( iDb!=1 ){
+ pDb = &db->aDb[1];
+ assert( pDb->pSchema!=0 );
+ sqlite3SchemaClear(pDb->pSchema);
+ }
+ return;
}
- for(i=iDb; i<db->nDb; i++){
+ /* Case 2 (from here to the end): Reset all schemas for all attached
+ ** databases. */
+ assert( iDb<0 );
+ sqlite3BtreeEnterAll(db);
+ for(i=0; i<db->nDb; i++){
Db *pDb = &db->aDb[i];
if( pDb->pSchema ){
- assert(i==1 || (pDb->pBt && sqlite3BtreeHoldsMutex(pDb->pBt)));
- sqlite3SchemaFree(pDb->pSchema);
+ sqlite3SchemaClear(pDb->pSchema);
}
- if( iDb>0 ) return;
}
- assert( iDb==0 );
db->flags &= ~SQLITE_InternChanges;
sqlite3VtabUnlockList(db);
sqlite3BtreeLeaveAll(db);
@@ -75346,6 +81582,7 @@
TESTONLY ( Index *pOld = ) sqlite3HashInsert(
&pIndex->pSchema->idxHash, zName, sqlite3Strlen30(zName), 0
);
+ assert( db==0 || sqlite3SchemaMutexHeld(db, 0, pIndex->pSchema) );
assert( pOld==pIndex || pOld==0 );
}
freeIndex(db, pIndex);
@@ -75380,6 +81617,7 @@
assert( db!=0 );
assert( iDb>=0 && iDb<db->nDb );
assert( zTabName );
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
testcase( zTabName[0]==0 ); /* Zero-length table names are allowed */
pDb = &db->aDb[iDb];
p = sqlite3HashInsert(&pDb->pSchema->tblHash, zTabName,
@@ -75634,6 +81872,9 @@
if( pTable ){
if( !noErr ){
sqlite3ErrorMsg(pParse, "table %T already exists", pName);
+ }else{
+ assert( !db->init.busy );
+ sqlite3CodeVerifySchema(pParse, iDb);
}
goto begin_table_error;
}
@@ -75664,6 +81905,7 @@
*/
#ifndef SQLITE_OMIT_AUTOINCREMENT
if( !pParse->nested && strcmp(zName, "sqlite_sequence")==0 ){
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
pTable->pSchema->pSeqTab = pTable;
}
#endif
@@ -76124,6 +82366,7 @@
int r1 = sqlite3GetTempReg(pParse);
sqlite3 *db = pParse->db;
Vdbe *v = pParse->pVdbe;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
sqlite3VdbeAddOp2(v, OP_Integer, db->aDb[iDb].pSchema->schema_cookie+1, r1);
sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_SCHEMA_VERSION, r1);
sqlite3ReleaseTempReg(pParse, r1);
@@ -76231,7 +82474,7 @@
zSep = zSep2;
identPut(zStmt, &k, pCol->zName);
assert( pCol->affinity-SQLITE_AFF_TEXT >= 0 );
- assert( pCol->affinity-SQLITE_AFF_TEXT < sizeof(azType)/sizeof(azType[0]) );
+ assert( pCol->affinity-SQLITE_AFF_TEXT < ArraySize(azType) );
testcase( pCol->affinity==SQLITE_AFF_TEXT );
testcase( pCol->affinity==SQLITE_AFF_NONE );
testcase( pCol->affinity==SQLITE_AFF_NUMERIC );
@@ -76426,6 +82669,7 @@
*/
if( p->tabFlags & TF_Autoincrement ){
Db *pDb = &db->aDb[iDb];
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
if( pDb->pSchema->pSeqTab==0 ){
sqlite3NestedParse(pParse,
"CREATE TABLE %Q.sqlite_sequence(name,seq)",
@@ -76436,8 +82680,8 @@
#endif
/* Reparse everything to update our internal data structures */
- sqlite3VdbeAddOp4(v, OP_ParseSchema, iDb, 0, 0,
- sqlite3MPrintf(db, "tbl_name='%q'",p->zName), P4_DYNAMIC);
+ sqlite3VdbeAddParseSchemaOp(v, iDb,
+ sqlite3MPrintf(db, "tbl_name='%q'", p->zName));
}
@@ -76446,6 +82690,7 @@
if( db->init.busy ){
Table *pOld;
Schema *pSchema = p->pSchema;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
pOld = sqlite3HashInsert(&pSchema->tblHash, p->zName,
sqlite3Strlen30(p->zName),p);
if( pOld ){
@@ -76490,7 +82735,7 @@
const char *z;
Token sEnd;
DbFixer sFix;
- Token *pName;
+ Token *pName = 0;
int iDb;
sqlite3 *db = pParse->db;
@@ -76630,6 +82875,7 @@
pSelTab->nCol = 0;
pSelTab->aCol = 0;
sqlite3DeleteTable(db, pSelTab);
+ assert( sqlite3SchemaMutexHeld(db, 0, pTable->pSchema) );
pTable->pSchema->flags |= DB_UnresetViews;
}else{
pTable->nCol = 0;
@@ -76650,6 +82896,7 @@
*/
static void sqliteViewResetAll(sqlite3 *db, int idx){
HashElem *i;
+ assert( sqlite3SchemaMutexHeld(db, idx, 0) );
if( !DbHasProperty(db, idx, DB_UnresetViews) ) return;
for(i=sqliteHashFirst(&db->aDb[idx].pSchema->tblHash); i;i=sqliteHashNext(i)){
Table *pTab = sqliteHashData(i);
@@ -76683,10 +82930,13 @@
** in order to be certain that we got the right one.
*/
#ifndef SQLITE_OMIT_AUTOVACUUM
-SQLITE_PRIVATE void sqlite3RootPageMoved(Db *pDb, int iFrom, int iTo){
+SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3 *db, int iDb, int iFrom, int iTo){
HashElem *pElem;
Hash *pHash;
+ Db *pDb;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
+ pDb = &db->aDb[iDb];
pHash = &pDb->pSchema->tblHash;
for(pElem=sqliteHashFirst(pHash); pElem; pElem=sqliteHashNext(pElem)){
Table *pTab = sqliteHashData(pElem);
@@ -76792,6 +83042,100 @@
}
/*
+** Remove entries from the sqlite_statN tables (for N in (1,2,3))
+** after a DROP INDEX or DROP TABLE command.
+*/
+static void sqlite3ClearStatTables(
+ Parse *pParse, /* The parsing context */
+ int iDb, /* The database number */
+ const char *zType, /* "idx" or "tbl" */
+ const char *zName /* Name of index or table */
+){
+ int i;
+ const char *zDbName = pParse->db->aDb[iDb].zName;
+ for(i=1; i<=3; i++){
+ char zTab[24];
+ sqlite3_snprintf(sizeof(zTab),zTab,"sqlite_stat%d",i);
+ if( sqlite3FindTable(pParse->db, zTab, zDbName) ){
+ sqlite3NestedParse(pParse,
+ "DELETE FROM %Q.%s WHERE %s=%Q",
+ zDbName, zTab, zType, zName
+ );
+ }
+ }
+}
+
+/*
+** Generate code to drop a table.
+*/
+SQLITE_PRIVATE void sqlite3CodeDropTable(Parse *pParse, Table *pTab, int iDb, int isView){
+ Vdbe *v;
+ sqlite3 *db = pParse->db;
+ Trigger *pTrigger;
+ Db *pDb = &db->aDb[iDb];
+
+ v = sqlite3GetVdbe(pParse);
+ assert( v!=0 );
+ sqlite3BeginWriteOperation(pParse, 1, iDb);
+
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+ if( IsVirtual(pTab) ){
+ sqlite3VdbeAddOp0(v, OP_VBegin);
+ }
+#endif
+
+ /* Drop all triggers associated with the table being dropped. Code
+ ** is generated to remove entries from sqlite_master and/or
+ ** sqlite_temp_master if required.
+ */
+ pTrigger = sqlite3TriggerList(pParse, pTab);
+ while( pTrigger ){
+ assert( pTrigger->pSchema==pTab->pSchema ||
+ pTrigger->pSchema==db->aDb[1].pSchema );
+ sqlite3DropTriggerPtr(pParse, pTrigger);
+ pTrigger = pTrigger->pNext;
+ }
+
+#ifndef SQLITE_OMIT_AUTOINCREMENT
+ /* Remove any entries of the sqlite_sequence table associated with
+ ** the table being dropped. This is done before the table is dropped
+ ** at the btree level, in case the sqlite_sequence table needs to
+ ** move as a result of the drop (can happen in auto-vacuum mode).
+ */
+ if( pTab->tabFlags & TF_Autoincrement ){
+ sqlite3NestedParse(pParse,
+ "DELETE FROM %Q.sqlite_sequence WHERE name=%Q",
+ pDb->zName, pTab->zName
+ );
+ }
+#endif
+
+ /* Drop all SQLITE_MASTER table and index entries that refer to the
+ ** table. The program name loops through the master table and deletes
+ ** every row that refers to a table of the same name as the one being
+ ** dropped. Triggers are handled seperately because a trigger can be
+ ** created in the temp database that refers to a table in another
+ ** database.
+ */
+ sqlite3NestedParse(pParse,
+ "DELETE FROM %Q.%s WHERE tbl_name=%Q and type!='trigger'",
+ pDb->zName, SCHEMA_TABLE(iDb), pTab->zName);
+ if( !isView && !IsVirtual(pTab) ){
+ destroyTable(pParse, pTab);
+ }
+
+ /* Remove the table entry from SQLite's internal schema and modify
+ ** the schema cookie.
+ */
+ if( IsVirtual(pTab) ){
+ sqlite3VdbeAddOp4(v, OP_VDestroy, iDb, 0, 0, pTab->zName, 0);
+ }
+ sqlite3VdbeAddOp4(v, OP_DropTable, iDb, 0, 0, pTab->zName, 0);
+ sqlite3ChangeCookie(pParse, iDb);
+ sqliteViewResetAll(db, iDb);
+}
+
+/*
** This routine is called to do the work of a DROP TABLE statement.
** pName is the name of the table to be dropped.
*/
@@ -76812,6 +83156,7 @@
if( noErr ) db->suppressErr--;
if( pTab==0 ){
+ if( noErr ) sqlite3CodeVerifyNamedSchema(pParse, pName->a[0].zDatabase);
goto exit_drop_table;
}
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
@@ -76858,7 +83203,8 @@
}
}
#endif
- if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 ){
+ if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0
+ && sqlite3StrNICmp(pTab->zName, "sqlite_stat", 11)!=0 ){
sqlite3ErrorMsg(pParse, "table %s may not be dropped", pTab->zName);
goto exit_drop_table;
}
@@ -76882,75 +83228,11 @@
*/
v = sqlite3GetVdbe(pParse);
if( v ){
- Trigger *pTrigger;
- Db *pDb = &db->aDb[iDb];
sqlite3BeginWriteOperation(pParse, 1, iDb);
-
-#ifndef SQLITE_OMIT_VIRTUALTABLE
- if( IsVirtual(pTab) ){
- sqlite3VdbeAddOp0(v, OP_VBegin);
- }
-#endif
+ sqlite3ClearStatTables(pParse, iDb, "tbl", pTab->zName);
sqlite3FkDropTable(pParse, pName, pTab);
-
- /* Drop all triggers associated with the table being dropped. Code
- ** is generated to remove entries from sqlite_master and/or
- ** sqlite_temp_master if required.
- */
- pTrigger = sqlite3TriggerList(pParse, pTab);
- while( pTrigger ){
- assert( pTrigger->pSchema==pTab->pSchema ||
- pTrigger->pSchema==db->aDb[1].pSchema );
- sqlite3DropTriggerPtr(pParse, pTrigger);
- pTrigger = pTrigger->pNext;
- }
-
-#ifndef SQLITE_OMIT_AUTOINCREMENT
- /* Remove any entries of the sqlite_sequence table associated with
- ** the table being dropped. This is done before the table is dropped
- ** at the btree level, in case the sqlite_sequence table needs to
- ** move as a result of the drop (can happen in auto-vacuum mode).
- */
- if( pTab->tabFlags & TF_Autoincrement ){
- sqlite3NestedParse(pParse,
- "DELETE FROM %s.sqlite_sequence WHERE name=%Q",
- pDb->zName, pTab->zName
- );
- }
-#endif
-
- /* Drop all SQLITE_MASTER table and index entries that refer to the
- ** table. The program name loops through the master table and deletes
- ** every row that refers to a table of the same name as the one being
- ** dropped. Triggers are handled seperately because a trigger can be
- ** created in the temp database that refers to a table in another
- ** database.
- */
- sqlite3NestedParse(pParse,
- "DELETE FROM %Q.%s WHERE tbl_name=%Q and type!='trigger'",
- pDb->zName, SCHEMA_TABLE(iDb), pTab->zName);
-
- /* Drop any statistics from the sqlite_stat1 table, if it exists */
- if( sqlite3FindTable(db, "sqlite_stat1", db->aDb[iDb].zName) ){
- sqlite3NestedParse(pParse,
- "DELETE FROM %Q.sqlite_stat1 WHERE tbl=%Q", pDb->zName, pTab->zName
- );
- }
-
- if( !isView && !IsVirtual(pTab) ){
- destroyTable(pParse, pTab);
- }
-
- /* Remove the table entry from SQLite's internal schema and modify
- ** the schema cookie.
- */
- if( IsVirtual(pTab) ){
- sqlite3VdbeAddOp4(v, OP_VDestroy, iDb, 0, 0, pTab->zName, 0);
- }
- sqlite3VdbeAddOp4(v, OP_DropTable, iDb, 0, 0, pTab->zName, 0);
- sqlite3ChangeCookie(pParse, iDb);
+ sqlite3CodeDropTable(pParse, pTab, iDb, isView);
}
- sqliteViewResetAll(db, iDb);
exit_drop_table:
sqlite3SrcListDelete(db, pName);
@@ -77060,6 +83342,7 @@
pFKey->aAction[0] = (u8)(flags & 0xff); /* ON DELETE action */
pFKey->aAction[1] = (u8)((flags >> 8 ) & 0xff); /* ON UPDATE action */
+ assert( sqlite3SchemaMutexHeld(db, 0, p->pSchema) );
pNextTo = (FKey *)sqlite3HashInsert(&p->pSchema->fkeyHash,
pFKey->zTo, sqlite3Strlen30(pFKey->zTo), (void *)pFKey
);
@@ -77117,11 +83400,15 @@
Table *pTab = pIndex->pTable; /* The table that is indexed */
int iTab = pParse->nTab++; /* Btree cursor used for pTab */
int iIdx = pParse->nTab++; /* Btree cursor used for pIndex */
+ int iSorter; /* Cursor opened by OpenSorter (if in use) */
int addr1; /* Address of top of loop */
+ int addr2; /* Address to jump to for next iteration */
int tnum; /* Root page of index */
Vdbe *v; /* Generate code into this virtual machine */
KeyInfo *pKey; /* KeyInfo for index */
+#ifdef SQLITE_OMIT_MERGE_SORT
int regIdxKey; /* Registers containing the index key */
+#endif
int regRecord; /* Register holding assemblied index record */
sqlite3 *db = pParse->db; /* The database connection */
int iDb = sqlite3SchemaToIndex(db, pIndex->pSchema);
@@ -77150,10 +83437,44 @@
if( memRootPage>=0 ){
sqlite3VdbeChangeP5(v, 1);
}
+
+#ifndef SQLITE_OMIT_MERGE_SORT
+ /* Open the sorter cursor if we are to use one. */
+ iSorter = pParse->nTab++;
+ sqlite3VdbeAddOp4(v, OP_SorterOpen, iSorter, 0, 0, (char*)pKey, P4_KEYINFO);
+#else
+ iSorter = iTab;
+#endif
+
+ /* Open the table. Loop through all rows of the table, inserting index
+ ** records into the sorter. */
sqlite3OpenTable(pParse, iTab, iDb, pTab, OP_OpenRead);
addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iTab, 0);
regRecord = sqlite3GetTempReg(pParse);
+
+#ifndef SQLITE_OMIT_MERGE_SORT
+ sqlite3GenerateIndexKey(pParse, pIndex, iTab, regRecord, 1);
+ sqlite3VdbeAddOp2(v, OP_SorterInsert, iSorter, regRecord);
+ sqlite3VdbeAddOp2(v, OP_Next, iTab, addr1+1);
+ sqlite3VdbeJumpHere(v, addr1);
+ addr1 = sqlite3VdbeAddOp2(v, OP_SorterSort, iSorter, 0);
+ if( pIndex->onError!=OE_None ){
+ int j2 = sqlite3VdbeCurrentAddr(v) + 3;
+ sqlite3VdbeAddOp2(v, OP_Goto, 0, j2);
+ addr2 = sqlite3VdbeCurrentAddr(v);
+ sqlite3VdbeAddOp3(v, OP_SorterCompare, iSorter, j2, regRecord);
+ sqlite3HaltConstraint(
+ pParse, OE_Abort, "indexed columns are not unique", P4_STATIC
+ );
+ }else{
+ addr2 = sqlite3VdbeCurrentAddr(v);
+ }
+ sqlite3VdbeAddOp2(v, OP_SorterData, iSorter, regRecord);
+ sqlite3VdbeAddOp3(v, OP_IdxInsert, iIdx, regRecord, 1);
+ sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT);
+#else
regIdxKey = sqlite3GenerateIndexKey(pParse, pIndex, iTab, regRecord, 1);
+ addr2 = addr1 + 1;
if( pIndex->onError!=OE_None ){
const int regRowid = regIdxKey + pIndex->nColumn;
const int j2 = sqlite3VdbeCurrentAddr(v) + 2;
@@ -77172,13 +83493,16 @@
sqlite3HaltConstraint(
pParse, OE_Abort, "indexed columns are not unique", P4_STATIC);
}
- sqlite3VdbeAddOp2(v, OP_IdxInsert, iIdx, regRecord);
+ sqlite3VdbeAddOp3(v, OP_IdxInsert, iIdx, regRecord, 0);
sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT);
+#endif
sqlite3ReleaseTempReg(pParse, regRecord);
- sqlite3VdbeAddOp2(v, OP_Next, iTab, addr1+1);
+ sqlite3VdbeAddOp2(v, OP_SorterNext, iSorter, addr2);
sqlite3VdbeJumpHere(v, addr1);
+
sqlite3VdbeAddOp1(v, OP_Close, iTab);
sqlite3VdbeAddOp1(v, OP_Close, iIdx);
+ sqlite3VdbeAddOp1(v, OP_Close, iSorter);
}
/*
@@ -77248,6 +83572,7 @@
assert( pName1 && pName2 );
iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pName);
if( iDb<0 ) goto exit_create_index;
+ assert( pName && pName->z );
#ifndef SQLITE_OMIT_TEMPDB
/* If the index name was unqualified, check if the the table
@@ -77275,6 +83600,7 @@
assert( db->aDb[iDb].pSchema==pTab->pSchema );
}else{
assert( pName==0 );
+ assert( pStart==0 );
pTab = pParse->pNewTable;
if( !pTab ) goto exit_create_index;
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
@@ -77317,6 +83643,7 @@
if( pName ){
zName = sqlite3NameFromToken(db, pName);
if( zName==0 ) goto exit_create_index;
+ assert( pName->z!=0 );
if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){
goto exit_create_index;
}
@@ -77329,6 +83656,9 @@
if( sqlite3FindIndex(db, zName, pDb->zName)!=0 ){
if( !ifNotExist ){
sqlite3ErrorMsg(pParse, "index %s already exists", zName);
+ }else{
+ assert( !db->init.busy );
+ sqlite3CodeVerifySchema(pParse, iDb);
}
goto exit_create_index;
}
@@ -77392,21 +83722,25 @@
nName = sqlite3Strlen30(zName);
nCol = pList->nExpr;
pIndex = sqlite3DbMallocZero(db,
- sizeof(Index) + /* Index structure */
- sizeof(int)*nCol + /* Index.aiColumn */
- sizeof(int)*(nCol+1) + /* Index.aiRowEst */
- sizeof(char *)*nCol + /* Index.azColl */
- sizeof(u8)*nCol + /* Index.aSortOrder */
- nName + 1 + /* Index.zName */
- nExtra /* Collation sequence names */
+ ROUND8(sizeof(Index)) + /* Index structure */
+ ROUND8(sizeof(tRowcnt)*(nCol+1)) + /* Index.aiRowEst */
+ sizeof(char *)*nCol + /* Index.azColl */
+ sizeof(int)*nCol + /* Index.aiColumn */
+ sizeof(u8)*nCol + /* Index.aSortOrder */
+ nName + 1 + /* Index.zName */
+ nExtra /* Collation sequence names */
);
if( db->mallocFailed ){
goto exit_create_index;
}
- pIndex->azColl = (char**)(&pIndex[1]);
+ zExtra = (char*)pIndex;
+ pIndex->aiRowEst = (tRowcnt*)&zExtra[ROUND8(sizeof(Index))];
+ pIndex->azColl = (char**)
+ ((char*)pIndex->aiRowEst + ROUND8(sizeof(tRowcnt)*nCol+1));
+ assert( EIGHT_BYTE_ALIGNMENT(pIndex->aiRowEst) );
+ assert( EIGHT_BYTE_ALIGNMENT(pIndex->azColl) );
pIndex->aiColumn = (int *)(&pIndex->azColl[nCol]);
- pIndex->aiRowEst = (unsigned *)(&pIndex->aiColumn[nCol]);
- pIndex->aSortOrder = (u8 *)(&pIndex->aiRowEst[nCol+1]);
+ pIndex->aSortOrder = (u8 *)(&pIndex->aiColumn[nCol]);
pIndex->zName = (char *)(&pIndex->aSortOrder[nCol]);
zExtra = (char *)(&pIndex->zName[nName+1]);
memcpy(pIndex->zName, zName, nName+1);
@@ -77415,6 +83749,7 @@
pIndex->onError = (u8)onError;
pIndex->autoIndex = (u8)(pName==0);
pIndex->pSchema = db->aDb[iDb].pSchema;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
/* Check to see if we should honor DESC requests on index columns
*/
@@ -77544,6 +83879,7 @@
*/
if( db->init.busy ){
Index *p;
+ assert( sqlite3SchemaMutexHeld(db, 0, pIndex->pSchema) );
p = sqlite3HashInsert(&pIndex->pSchema->idxHash,
pIndex->zName, sqlite3Strlen30(pIndex->zName),
pIndex);
@@ -77595,7 +83931,7 @@
/* A named index with an explicit CREATE INDEX statement */
zStmt = sqlite3MPrintf(db, "CREATE%s INDEX %.*s",
onError==OE_None ? "" : " UNIQUE",
- pEnd->z - pName->z + 1,
+ (int)(pEnd->z - pName->z) + 1,
pName->z);
}else{
/* An automatic index created by a PRIMARY KEY or UNIQUE constraint */
@@ -77621,9 +83957,8 @@
if( pTblName ){
sqlite3RefillIndex(pParse, pIndex, iMem);
sqlite3ChangeCookie(pParse, iDb);
- sqlite3VdbeAddOp4(v, OP_ParseSchema, iDb, 0, 0,
- sqlite3MPrintf(db, "name='%q' AND type='index'", pIndex->zName),
- P4_DYNAMIC);
+ sqlite3VdbeAddParseSchemaOp(v, iDb,
+ sqlite3MPrintf(db, "name='%q' AND type='index'", pIndex->zName));
sqlite3VdbeAddOp1(v, OP_Expire, 0);
}
}
@@ -77682,9 +84017,9 @@
** are based on typical values found in actual indices.
*/
SQLITE_PRIVATE void sqlite3DefaultRowEst(Index *pIdx){
- unsigned *a = pIdx->aiRowEst;
+ tRowcnt *a = pIdx->aiRowEst;
int i;
- unsigned n;
+ tRowcnt n;
assert( a!=0 );
a[0] = pIdx->pTable->nRowEst;
if( a[0]<10 ) a[0] = 10;
@@ -77720,6 +84055,8 @@
if( pIndex==0 ){
if( !ifExists ){
sqlite3ErrorMsg(pParse, "no such index: %S", pName, 0);
+ }else{
+ sqlite3CodeVerifyNamedSchema(pParse, pName->a[0].zDatabase);
}
pParse->checkSchema = 1;
goto exit_drop_index;
@@ -77752,15 +84089,9 @@
sqlite3BeginWriteOperation(pParse, 1, iDb);
sqlite3NestedParse(pParse,
"DELETE FROM %Q.%s WHERE name=%Q AND type='index'",
- db->aDb[iDb].zName, SCHEMA_TABLE(iDb),
- pIndex->zName
+ db->aDb[iDb].zName, SCHEMA_TABLE(iDb), pIndex->zName
);
- if( sqlite3FindTable(db, "sqlite_stat1", db->aDb[iDb].zName) ){
- sqlite3NestedParse(pParse,
- "DELETE FROM %Q.sqlite_stat1 WHERE idx=%Q",
- db->aDb[iDb].zName, pIndex->zName
- );
- }
+ sqlite3ClearStatTables(pParse, iDb, "idx", pIndex->zName);
sqlite3ChangeCookie(pParse, iDb);
destroyRootPage(pParse, pIndex->tnum, iDb);
sqlite3VdbeAddOp4(v, OP_DropIndex, iDb, 0, 0, pIndex->zName, 0);
@@ -78132,8 +84463,9 @@
** operator with A. This routine shifts that operator over to B.
*/
SQLITE_PRIVATE void sqlite3SrcListShiftJoinType(SrcList *p){
- if( p && p->a ){
+ if( p ){
int i;
+ assert( p->a || p->nSrc==0 );
for(i=p->nSrc-1; i>0; i--){
p->a[i].jointype = p->a[i-1].jointype;
}
@@ -78171,13 +84503,10 @@
** Commit a transaction
*/
SQLITE_PRIVATE void sqlite3CommitTransaction(Parse *pParse){
- sqlite3 *db;
Vdbe *v;
assert( pParse!=0 );
- db = pParse->db;
- assert( db!=0 );
-/* if( db->aDb[0].pBt==0 ) return; */
+ assert( pParse->db!=0 );
if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION, "COMMIT", 0, 0) ){
return;
}
@@ -78191,13 +84520,10 @@
** Rollback a transaction
*/
SQLITE_PRIVATE void sqlite3RollbackTransaction(Parse *pParse){
- sqlite3 *db;
Vdbe *v;
assert( pParse!=0 );
- db = pParse->db;
- assert( db!=0 );
-/* if( db->aDb[0].pBt==0 ) return; */
+ assert( pParse->db!=0 );
if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION, "ROLLBACK", 0, 0) ){
return;
}
@@ -78243,7 +84569,7 @@
SQLITE_OPEN_DELETEONCLOSE |
SQLITE_OPEN_TEMP_DB;
- rc = sqlite3BtreeOpen(0, db, &pBt, 0, flags);
+ rc = sqlite3BtreeOpen(db->pVfs, 0, db, &pBt, 0, flags);
if( rc!=SQLITE_OK ){
sqlite3ErrorMsg(pParse, "unable to open a temporary database "
"file for storing temporary tables");
@@ -78292,12 +84618,13 @@
}
if( iDb>=0 ){
sqlite3 *db = pToplevel->db;
- int mask;
+ yDbMask mask;
assert( iDb<db->nDb );
assert( db->aDb[iDb].pBt!=0 || iDb==1 );
assert( iDb<SQLITE_MAX_ATTACHED+2 );
- mask = 1<<iDb;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
+ mask = ((yDbMask)1)<<iDb;
if( (pToplevel->cookieMask & mask)==0 ){
pToplevel->cookieMask |= mask;
pToplevel->cookieValue[iDb] = db->aDb[iDb].pSchema->schema_cookie;
@@ -78309,6 +84636,21 @@
}
/*
+** If argument zDb is NULL, then call sqlite3CodeVerifySchema() for each
+** attached database. Otherwise, invoke it for the database named zDb only.
+*/
+SQLITE_PRIVATE void sqlite3CodeVerifyNamedSchema(Parse *pParse, const char *zDb){
+ sqlite3 *db = pParse->db;
+ int i;
+ for(i=0; i<db->nDb; i++){
+ Db *pDb = &db->aDb[i];
+ if( pDb->pBt && (!zDb || 0==sqlite3StrICmp(zDb, pDb->zName)) ){
+ sqlite3CodeVerifySchema(pParse, i);
+ }
+ }
+}
+
+/*
** Generate VDBE code that prepares for doing an operation that
** might change the database.
**
@@ -78324,7 +84666,7 @@
SQLITE_PRIVATE void sqlite3BeginWriteOperation(Parse *pParse, int setStatement, int iDb){
Parse *pToplevel = sqlite3ParseToplevel(pParse);
sqlite3CodeVerifySchema(pParse, iDb);
- pToplevel->writeMask |= 1<<iDb;
+ pToplevel->writeMask |= ((yDbMask)1)<<iDb;
pToplevel->isMultiWrite |= setStatement;
}
@@ -78424,6 +84766,7 @@
HashElem *k; /* For looping over tables in pDb */
Table *pTab; /* A table in the database */
+ assert( sqlite3BtreeHoldsAllMutexes(db) ); /* Needed for schema access */
for(iDb=0, pDb=db->aDb; iDb<db->nDb; iDb++, pDb++){
assert( pDb!=0 );
for(k=sqliteHashFirst(&pDb->pSchema->tblHash); k; k=sqliteHashNext(k)){
@@ -78942,12 +85285,12 @@
/*
** Free all resources held by the schema structure. The void* argument points
** at a Schema struct. This function does not call sqlite3DbFree(db, ) on the
-** pointer itself, it just cleans up subsiduary resources (i.e. the contents
+** pointer itself, it just cleans up subsidiary resources (i.e. the contents
** of the schema hash tables).
**
** The Schema.cache_size variable is not cleared.
*/
-SQLITE_PRIVATE void sqlite3SchemaFree(void *p){
+SQLITE_PRIVATE void sqlite3SchemaClear(void *p){
Hash temp1;
Hash temp2;
HashElem *pElem;
@@ -78969,7 +85312,10 @@
sqlite3HashClear(&temp1);
sqlite3HashClear(&pSchema->fkeyHash);
pSchema->pSeqTab = 0;
- pSchema->flags &= ~DB_SchemaLoaded;
+ if( pSchema->flags & DB_SchemaLoaded ){
+ pSchema->iGeneration++;
+ pSchema->flags &= ~DB_SchemaLoaded;
+ }
}
/*
@@ -78979,7 +85325,7 @@
SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *db, Btree *pBt){
Schema * p;
if( pBt ){
- p = (Schema *)sqlite3BtreeSchema(pBt, sizeof(Schema), sqlite3SchemaFree);
+ p = (Schema *)sqlite3BtreeSchema(pBt, sizeof(Schema), sqlite3SchemaClear);
}else{
p = (Schema *)sqlite3DbMallocZero(0, sizeof(Schema));
}
@@ -79013,9 +85359,18 @@
*/
/*
-** Look up every table that is named in pSrc. If any table is not found,
-** add an error message to pParse->zErrMsg and return NULL. If all tables
-** are found, return a pointer to the last table.
+** While a SrcList can in general represent multiple tables and subqueries
+** (as in the FROM clause of a SELECT statement) in this case it contains
+** the name of a single table, as one might find in an INSERT, DELETE,
+** or UPDATE statement. Look up that table in the symbol table and
+** return a pointer. Set an error message and return NULL if the table
+** name is not found or if any other error occurs.
+**
+** The following fields are initialized appropriate in pSrc:
+**
+** pSrc->a[0].pTab Pointer to the Table object
+** pSrc->a[0].pIndex Pointer to the INDEXED BY index, if there is one
+**
*/
SQLITE_PRIVATE Table *sqlite3SrcListLookup(Parse *pParse, SrcList *pSrc){
struct SrcList_item *pItem = pSrc->a;
@@ -79137,7 +85492,6 @@
*/
if( pOrderBy && (pLimit == 0) ) {
sqlite3ErrorMsg(pParse, "ORDER BY without LIMIT on %s", zStmtType);
- pParse->parseError = 1;
goto limit_where_cleanup_2;
}
@@ -79360,7 +85714,9 @@
/* Collect rowids of every row to be deleted.
*/
sqlite3VdbeAddOp2(v, OP_Null, 0, iRowSet);
- pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere,0,WHERE_DUPLICATES_OK);
+ pWInfo = sqlite3WhereBegin(
+ pParse, pTabList, pWhere, 0, 0, WHERE_DUPLICATES_OK
+ );
if( pWInfo==0 ) goto delete_from_cleanup;
regRowid = sqlite3ExprCodeGetColumn(pParse, pTab, -1, iCur, iRowid);
sqlite3VdbeAddOp2(v, OP_RowSetAdd, iRowSet, regRowid);
@@ -79390,6 +85746,7 @@
const char *pVTab = (const char *)sqlite3GetVTable(db, pTab);
sqlite3VtabMakeWritable(pParse, pTab);
sqlite3VdbeAddOp4(v, OP_VUpdate, 0, 1, iRowid, pVTab, P4_VTAB);
+ sqlite3VdbeChangeP5(v, OE_Abort);
sqlite3MayAbort(pParse);
}else
#endif
@@ -79534,7 +85891,7 @@
sqlite3GenerateRowIndexDelete(pParse, pTab, iCur, 0);
sqlite3VdbeAddOp2(v, OP_Delete, iCur, (count?OPFLAG_NCHANGE:0));
if( count ){
- sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_STATIC);
+ sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_TRANSIENT);
}
}
@@ -79624,8 +85981,14 @@
}
}
if( doMakeRec ){
+ const char *zAff;
+ if( pTab->pSelect || (pParse->db->flags & SQLITE_IdxRealAsInt)!=0 ){
+ zAff = 0;
+ }else{
+ zAff = sqlite3IndexAffinityStr(v, pIdx);
+ }
sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nCol+1, regOut);
- sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v, pIdx), 0);
+ sqlite3VdbeChangeP4(v, -1, zAff, P4_TRANSIENT);
}
sqlite3ReleaseTempRange(pParse, regBase, nCol+1);
return regBase;
@@ -79651,6 +86014,8 @@
** sqliteRegisterBuildinFunctions() found at the bottom of the file.
** All other code has file scope.
*/
+/* #include <stdlib.h> */
+/* #include <assert.h> */
/*
** Return the collating function associated with a function.
@@ -79963,16 +86328,15 @@
if( z2 ){
z1 = contextMalloc(context, ((i64)n)+1);
if( z1 ){
- memcpy(z1, z2, n+1);
- for(i=0; z1[i]; i++){
- z1[i] = (char)sqlite3Toupper(z1[i]);
+ for(i=0; i<n; i++){
+ z1[i] = (char)sqlite3Toupper(z2[i]);
}
- sqlite3_result_text(context, z1, -1, sqlite3_free);
+ sqlite3_result_text(context, z1, n, sqlite3_free);
}
}
}
static void lowerFunc(sqlite3_context *context, int argc, sqlite3_value **argv){
- u8 *z1;
+ char *z1;
const char *z2;
int i, n;
UNUSED_PARAMETER(argc);
@@ -79983,11 +86347,10 @@
if( z2 ){
z1 = contextMalloc(context, ((i64)n)+1);
if( z1 ){
- memcpy(z1, z2, n+1);
- for(i=0; z1[i]; i++){
- z1[i] = sqlite3Tolower(z1[i]);
+ for(i=0; i<n; i++){
+ z1[i] = sqlite3Tolower(z2[i]);
}
- sqlite3_result_text(context, (char *)z1, -1, sqlite3_free);
+ sqlite3_result_text(context, z1, n, sqlite3_free);
}
}
}
@@ -80137,10 +86500,10 @@
** whereas only characters less than 0x80 do in ASCII.
*/
#if defined(SQLITE_EBCDIC)
-# define sqlite3Utf8Read(A,C) (*(A++))
-# define GlogUpperToLower(A) A = sqlite3UpperToLower[A]
+# define sqlite3Utf8Read(A,C) (*(A++))
+# define GlogUpperToLower(A) A = sqlite3UpperToLower[A]
#else
-# define GlogUpperToLower(A) if( A<0x80 ){ A = sqlite3UpperToLower[A]; }
+# define GlogUpperToLower(A) if( !((A)&~0x7f) ){ A = sqlite3UpperToLower[A]; }
#endif
static const struct compareInfo globInfo = { '*', '?', '[', 0 };
@@ -80183,9 +86546,9 @@
const u8 *zPattern, /* The glob pattern */
const u8 *zString, /* The string to compare against the glob */
const struct compareInfo *pInfo, /* Information about how to do the compare */
- const int esc /* The escape character */
+ u32 esc /* The escape character */
){
- int c, c2;
+ u32 c, c2;
int invert;
int seen;
u8 matchOne = pInfo->matchOne;
@@ -80239,7 +86602,7 @@
return 0;
}
}else if( c==matchSet ){
- int prior_c = 0;
+ u32 prior_c = 0;
assert( esc==0 ); /* This only occurs for GLOB, not LIKE */
seen = 0;
invert = 0;
@@ -80315,7 +86678,7 @@
sqlite3_value **argv
){
const unsigned char *zA, *zB;
- int escape = 0;
+ u32 escape = 0;
int nPat;
sqlite3 *db = sqlite3_context_db_handle(context);
@@ -80406,6 +86769,21 @@
}
/*
+** Implementation of the sqlite_log() function. This is a wrapper around
+** sqlite3_log(). The return value is NULL. The function exists purely for
+** its side-effects.
+*/
+static void errlogFunc(
+ sqlite3_context *context,
+ int argc,
+ sqlite3_value **argv
+){
+ UNUSED_PARAMETER(argc);
+ UNUSED_PARAMETER(context);
+ sqlite3_log(sqlite3_value_int(argv[0]), "%s", sqlite3_value_text(argv[1]));
+}
+
+/*
** Implementation of the sqlite_compileoption_used() function.
** The result is an integer that identifies if the compiler option
** was used to build SQLite.
@@ -80870,13 +87248,8 @@
if( type==SQLITE_INTEGER ){
i64 v = sqlite3_value_int64(argv[0]);
p->rSum += v;
- if( (p->approx|p->overflow)==0 ){
- i64 iNewSum = p->iSum + v;
- int s1 = (int)(p->iSum >> (sizeof(i64)*8-1));
- int s2 = (int)(v >> (sizeof(i64)*8-1));
- int s3 = (int)(iNewSum >> (sizeof(i64)*8-1));
- p->overflow = ((s1&s2&~s3) | (~s1&~s2&s3))?1:0;
- p->iSum = iNewSum;
+ if( (p->approx|p->overflow)==0 && sqlite3AddInt64(&p->iSum, v) ){
+ p->overflow = 1;
}
}else{
p->rSum += sqlite3_value_double(argv[0]);
@@ -81081,9 +87454,9 @@
}else{
pInfo = (struct compareInfo*)&likeInfoNorm;
}
- sqlite3CreateFunc(db, "like", 2, SQLITE_ANY, pInfo, likeFunc, 0, 0, 0);
- sqlite3CreateFunc(db, "like", 3, SQLITE_ANY, pInfo, likeFunc, 0, 0, 0);
- sqlite3CreateFunc(db, "glob", 2, SQLITE_ANY,
+ sqlite3CreateFunc(db, "like", 2, SQLITE_UTF8, pInfo, likeFunc, 0, 0, 0);
+ sqlite3CreateFunc(db, "like", 3, SQLITE_UTF8, pInfo, likeFunc, 0, 0, 0);
+ sqlite3CreateFunc(db, "glob", 2, SQLITE_UTF8,
(struct compareInfo*)&globInfo, likeFunc, 0, 0, 0);
setLikeOptFlag(db, "glob", SQLITE_FUNC_LIKE | SQLITE_FUNC_CASE);
setLikeOptFlag(db, "like",
@@ -81177,6 +87550,7 @@
FUNCTION(nullif, 2, 0, 1, nullifFunc ),
FUNCTION(sqlite_version, 0, 0, 0, versionFunc ),
FUNCTION(sqlite_source_id, 0, 0, 0, sourceidFunc ),
+ FUNCTION(sqlite_log, 2, 0, 0, errlogFunc ),
#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS
FUNCTION(sqlite_compileoption_used,1, 0, 0, compileoptionusedFunc ),
FUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc ),
@@ -81615,19 +87989,31 @@
/* If the parent table is the same as the child table, and we are about
** to increment the constraint-counter (i.e. this is an INSERT operation),
** then check if the row being inserted matches itself. If so, do not
- ** increment the constraint-counter. */
+ ** increment the constraint-counter.
+ **
+ ** If any of the parent-key values are NULL, then the row cannot match
+ ** itself. So set JUMPIFNULL to make sure we do the OP_Found if any
+ ** of the parent-key values are NULL (at this point it is known that
+ ** none of the child key values are).
+ */
if( pTab==pFKey->pFrom && nIncr==1 ){
int iJump = sqlite3VdbeCurrentAddr(v) + nCol + 1;
for(i=0; i<nCol; i++){
int iChild = aiCol[i]+1+regData;
int iParent = pIdx->aiColumn[i]+1+regData;
+ assert( aiCol[i]!=pTab->iPKey );
+ if( pIdx->aiColumn[i]==pTab->iPKey ){
+ /* The parent key is a composite key that includes the IPK column */
+ iParent = regData;
+ }
sqlite3VdbeAddOp3(v, OP_Ne, iChild, iJump, iParent);
+ sqlite3VdbeChangeP5(v, SQLITE_JUMPIFNULL);
}
sqlite3VdbeAddOp2(v, OP_Goto, 0, iOk);
}
sqlite3VdbeAddOp3(v, OP_MakeRecord, regTemp, nCol, regRec);
- sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v, pIdx), 0);
+ sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v,pIdx), P4_TRANSIENT);
sqlite3VdbeAddOp4Int(v, OP_Found, iCur, iOk, regRec, 0);
sqlite3ReleaseTempReg(pParse, regRec);
@@ -81777,7 +88163,7 @@
** clause. If the constraint is not deferred, throw an exception for
** each row found. Otherwise, for deferred constraints, increment the
** deferred constraint counter by nIncr for each row selected. */
- pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0, 0);
+ pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0, 0, 0);
if( nIncr>0 && pFKey->isDeferred==0 ){
sqlite3ParseToplevel(pParse)->mayAbort = 1;
}
@@ -81916,7 +88302,6 @@
int regNew /* New row data is stored here */
){
sqlite3 *db = pParse->db; /* Database handle */
- Vdbe *v; /* VM to write code to */
FKey *pFKey; /* Used to iterate through FKs */
int iDb; /* Index of database containing pTab */
const char *zDb; /* Name of database containing pTab */
@@ -81928,7 +88313,6 @@
/* If foreign-keys are disabled, this function is a no-op. */
if( (db->flags&SQLITE_ForeignKeys)==0 ) return;
- v = sqlite3GetVdbe(pParse);
iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
zDb = db->aDb[iDb].zName;
@@ -81953,7 +88337,24 @@
pTo = sqlite3LocateTable(pParse, 0, pFKey->zTo, zDb);
}
if( !pTo || locateFkeyIndex(pParse, pTo, pFKey, &pIdx, &aiFree) ){
+ assert( isIgnoreErrors==0 || (regOld!=0 && regNew==0) );
if( !isIgnoreErrors || db->mallocFailed ) return;
+ if( pTo==0 ){
+ /* If isIgnoreErrors is true, then a table is being dropped. In this
+ ** case SQLite runs a "DELETE FROM xxx" on the table being dropped
+ ** before actually dropping it in order to check FK constraints.
+ ** If the parent table of an FK constraint on the current table is
+ ** missing, behave as if it is empty. i.e. decrement the relevant
+ ** FK counter for each row of the current table with non-NULL keys.
+ */
+ Vdbe *v = sqlite3GetVdbe(pParse);
+ int iJump = sqlite3VdbeCurrentAddr(v) + pFKey->nCol + 1;
+ for(i=0; i<pFKey->nCol; i++){
+ int iReg = pFKey->aCol[i].iFrom + regOld + 1;
+ sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iJump);
+ }
+ sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, -1);
+ }
continue;
}
assert( pFKey->nCol==1 || (aiFree && pIdx) );
@@ -82326,6 +88727,7 @@
fkTriggerDelete(db, pTrigger);
return 0;
}
+ assert( pStep!=0 );
switch( action ){
case OE_Restrict:
@@ -82385,6 +88787,7 @@
FKey *pFKey; /* Iterator variable */
FKey *pNext; /* Copy of pFKey->pNextFrom */
+ assert( db==0 || sqlite3SchemaMutexHeld(db, 0, pTab->pSchema) );
for(pFKey=pTab->pFKey; pFKey; pFKey=pNext){
/* Remove the FK from the fkeyHash hash table. */
@@ -82468,7 +88871,7 @@
** 'd' INTEGER
** 'e' REAL
**
-** An extra 'b' is appended to the end of the string to cover the
+** An extra 'd' is appended to the end of the string to cover the
** rowid that appears as the last column in every index.
**
** Memory for the buffer containing the column index affinity string
@@ -82496,7 +88899,7 @@
for(n=0; n<pIdx->nColumn; n++){
pIdx->zColAff[n] = pTab->aCol[pIdx->aiColumn[n]].affinity;
}
- pIdx->zColAff[n++] = SQLITE_AFF_NONE;
+ pIdx->zColAff[n++] = SQLITE_AFF_INTEGER;
pIdx->zColAff[n] = 0;
}
@@ -82544,7 +88947,7 @@
pTab->zColAff = zColAff;
}
- sqlite3VdbeChangeP4(v, -1, pTab->zColAff, 0);
+ sqlite3VdbeChangeP4(v, -1, pTab->zColAff, P4_TRANSIENT);
}
/*
@@ -82658,7 +89061,9 @@
for(p = pParse->pAinc; p; p = p->pNext){
pDb = &db->aDb[p->iDb];
memId = p->regCtr;
+ assert( sqlite3SchemaMutexHeld(db, 0, pDb->pSchema) );
sqlite3OpenTable(pParse, 0, p->iDb, pDb->pSchema->pSeqTab, OP_OpenRead);
+ sqlite3VdbeAddOp3(v, OP_Null, 0, memId, memId+1);
addr = sqlite3VdbeCurrentAddr(v);
sqlite3VdbeAddOp4(v, OP_String8, 0, memId-1, 0, p->pTab->zName, 0);
sqlite3VdbeAddOp2(v, OP_Rewind, 0, addr+9);
@@ -82708,6 +89113,7 @@
int memId = p->regCtr;
iRec = sqlite3GetTempReg(pParse);
+ assert( sqlite3SchemaMutexHeld(db, 0, pDb->pSchema) );
sqlite3OpenTable(pParse, 0, p->iDb, pDb->pSchema->pSeqTab, OP_OpenWrite);
j1 = sqlite3VdbeAddOp1(v, OP_NotNull, memId+1);
j2 = sqlite3VdbeAddOp0(v, OP_Rewind);
@@ -82886,7 +89292,6 @@
int regIns; /* Block of regs holding rowid+data being inserted */
int regRowid; /* registers holding insert rowid */
int regData; /* register holding first column to insert */
- int regRecord; /* Holds the assemblied row record */
int regEof = 0; /* Register recording end of SELECT data */
int *aRegIdx = 0; /* One register allocated to each index */
@@ -83215,7 +89620,6 @@
/* Allocate registers for holding the rowid of the new row,
** the content of the new row, and the assemblied row record.
*/
- regRecord = ++pParse->nMem;
regRowid = regIns = pParse->nMem+1;
pParse->nMem += pTab->nCol + 1;
if( IsVirtual(pTab) ){
@@ -83390,6 +89794,7 @@
const char *pVTab = (const char *)sqlite3GetVTable(db, pTab);
sqlite3VtabMakeWritable(pParse, pTab);
sqlite3VdbeAddOp4(v, OP_VUpdate, 1, pTab->nCol+2, regIns, pVTab, P4_VTAB);
+ sqlite3VdbeChangeP5(v, onError==OE_Default ? OE_Abort : onError);
sqlite3MayAbort(pParse);
}else
#endif
@@ -83526,7 +89931,7 @@
** cause sqlite3_exec() to return immediately
** with SQLITE_CONSTRAINT.
**
-** any FAIL Sqlite_exec() returns immediately with a
+** any FAIL Sqlite3_exec() returns immediately with a
** return code of SQLITE_CONSTRAINT. The
** transaction is not rolled back and any
** prior changes are retained.
@@ -83609,7 +90014,7 @@
case OE_Rollback:
case OE_Fail: {
char *zMsg;
- j1 = sqlite3VdbeAddOp3(v, OP_HaltIfNull,
+ sqlite3VdbeAddOp3(v, OP_HaltIfNull,
SQLITE_CONSTRAINT, onError, regData+i);
zMsg = sqlite3MPrintf(pParse->db, "%s.%s may not be NULL",
pTab->zName, pTab->aCol[i].zName);
@@ -83749,7 +90154,7 @@
}
sqlite3VdbeAddOp2(v, OP_SCopy, regRowid, regIdx+i);
sqlite3VdbeAddOp3(v, OP_MakeRecord, regIdx, pIdx->nColumn+1, aRegIdx[iCur]);
- sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v, pIdx), 0);
+ sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v, pIdx), P4_TRANSIENT);
sqlite3ExprCacheAffinityChange(pParse, regIdx, pIdx->nColumn+1);
/* Find out what action to take in case there is an indexing conflict */
@@ -83889,7 +90294,7 @@
}
sqlite3VdbeAddOp3(v, OP_Insert, baseCur, regRec, regRowid);
if( !pParse->nested ){
- sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_STATIC);
+ sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_TRANSIENT);
}
sqlite3VdbeChangeP5(v, pik_flags);
}
@@ -83998,31 +90403,25 @@
**
** INSERT INTO tab1 SELECT * FROM tab2;
**
-** This optimization is only attempted if
+** The xfer optimization transfers raw records from tab2 over to tab1.
+** Columns are not decoded and reassemblied, which greatly improves
+** performance. Raw index records are transferred in the same way.
**
-** (1) tab1 and tab2 have identical schemas including all the
-** same indices and constraints
+** The xfer optimization is only attempted if tab1 and tab2 are compatible.
+** There are lots of rules for determining compatibility - see comments
+** embedded in the code for details.
**
-** (2) tab1 and tab2 are different tables
+** This routine returns TRUE if the optimization is guaranteed to be used.
+** Sometimes the xfer optimization will only work if the destination table
+** is empty - a factor that can only be determined at run-time. In that
+** case, this routine generates code for the xfer optimization but also
+** does a test to see if the destination table is empty and jumps over the
+** xfer optimization code if the test fails. In that case, this routine
+** returns FALSE so that the caller will know to go ahead and generate
+** an unoptimized transfer. This routine also returns FALSE if there
+** is no chance that the xfer optimization can be applied.
**
-** (3) There must be no triggers on tab1
-**
-** (4) The result set of the SELECT statement is "*"
-**
-** (5) The SELECT statement has no WHERE, HAVING, ORDER BY, GROUP BY,
-** or LIMIT clause.
-**
-** (6) The SELECT statement is a simple (not a compound) select that
-** contains only tab2 in its FROM clause
-**
-** This method for implementing the INSERT transfers raw records from
-** tab2 over to tab1. The columns are not decoded. Raw records from
-** the indices of tab2 are transfered to tab1 as well. In so doing,
-** the resulting tab1 has much less fragmentation.
-**
-** This routine returns TRUE if the optimization is attempted. If any
-** of the conditions above fail so that the optimization should not
-** be attempted, then this routine returns FALSE.
+** This optimization is particularly useful at making VACUUM run faster.
*/
static int xferOptimization(
Parse *pParse, /* Parser context */
@@ -84059,10 +90458,8 @@
}
#endif
if( onError==OE_Default ){
- onError = OE_Abort;
- }
- if( onError!=OE_Abort && onError!=OE_Rollback ){
- return 0; /* Cannot do OR REPLACE or OR IGNORE or OR FAIL */
+ if( pDest->iPKey>=0 ) onError = pDest->keyConf;
+ if( onError==OE_Default ) onError = OE_Abort;
}
assert(pSelect->pSrc); /* allocated even if there is no FROM clause */
if( pSelect->pSrc->nSrc!=1 ){
@@ -84155,14 +90552,25 @@
return 0; /* Tables have different CHECK constraints. Ticket #2252 */
}
#endif
+#ifndef SQLITE_OMIT_FOREIGN_KEY
+ /* Disallow the transfer optimization if the destination table constains
+ ** any foreign key constraints. This is more restrictive than necessary.
+ ** But the main beneficiary of the transfer optimization is the VACUUM
+ ** command, and the VACUUM command disables foreign key constraints. So
+ ** the extra complication to make this rule less restrictive is probably
+ ** not worth the effort. Ticket [6284df89debdfa61db8073e062908af0c9b6118e]
+ */
+ if( (pParse->db->flags & SQLITE_ForeignKeys)!=0 && pDest->pFKey!=0 ){
+ return 0;
+ }
+#endif
+ if( (pParse->db->flags & SQLITE_CountRows)!=0 ){
+ return 0; /* xfer opt does not play well with PRAGMA count_changes */
+ }
- /* If we get this far, it means either:
- **
- ** * We can always do the transfer if the table contains an
- ** an integer primary key
- **
- ** * We can conditionally do the transfer if the destination
- ** table is empty.
+ /* If we get this far, it means that the xfer optimization is at
+ ** least a possibility, though it might only work if the destination
+ ** table (tab1) is initially empty.
*/
#ifdef SQLITE_TEST
sqlite3_xferopt_count++;
@@ -84174,16 +90582,23 @@
iDest = pParse->nTab++;
regAutoinc = autoIncBegin(pParse, iDbDest, pDest);
sqlite3OpenTable(pParse, iDest, iDbDest, pDest, OP_OpenWrite);
- if( (pDest->iPKey<0 && pDest->pIndex!=0) || destHasUniqueIdx ){
- /* If tables do not have an INTEGER PRIMARY KEY and there
- ** are indices to be copied and the destination is not empty,
- ** we have to disallow the transfer optimization because the
- ** the rowids might change which will mess up indexing.
+ if( (pDest->iPKey<0 && pDest->pIndex!=0) /* (1) */
+ || destHasUniqueIdx /* (2) */
+ || (onError!=OE_Abort && onError!=OE_Rollback) /* (3) */
+ ){
+ /* In some circumstances, we are able to run the xfer optimization
+ ** only if the destination table is initially empty. This code makes
+ ** that determination. Conditions under which the destination must
+ ** be empty:
**
- ** Or if the destination has a UNIQUE index and is not empty,
- ** we also disallow the transfer optimization because we cannot
- ** insure that all entries in the union of DEST and SRC will be
- ** unique.
+ ** (1) There is no INTEGER PRIMARY KEY but there are indices.
+ ** (If the destination is not initially empty, the rowid fields
+ ** of index entries might need to change.)
+ **
+ ** (2) The destination has a unique index. (The xfer optimization
+ ** is unable to test uniqueness.)
+ **
+ ** (3) onError is something other than OE_Abort and OE_Rollback.
*/
addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iDest, 0);
emptyDestTest = sqlite3VdbeAddOp2(v, OP_Goto, 0, 0);
@@ -84469,8 +90884,10 @@
int (*busy_timeout)(sqlite3*,int ms);
int (*changes)(sqlite3*);
int (*close)(sqlite3*);
- int (*collation_needed)(sqlite3*,void*,void(*)(void*,sqlite3*,int eTextRep,const char*));
- int (*collation_needed16)(sqlite3*,void*,void(*)(void*,sqlite3*,int eTextRep,const void*));
+ int (*collation_needed)(sqlite3*,void*,void(*)(void*,sqlite3*,
+ int eTextRep,const char*));
+ int (*collation_needed16)(sqlite3*,void*,void(*)(void*,sqlite3*,
+ int eTextRep,const void*));
const void * (*column_blob)(sqlite3_stmt*,int iCol);
int (*column_bytes)(sqlite3_stmt*,int iCol);
int (*column_bytes16)(sqlite3_stmt*,int iCol);
@@ -84495,10 +90912,18 @@
void * (*commit_hook)(sqlite3*,int(*)(void*),void*);
int (*complete)(const char*sql);
int (*complete16)(const void*sql);
- int (*create_collation)(sqlite3*,const char*,int,void*,int(*)(void*,int,const void*,int,const void*));
- int (*create_collation16)(sqlite3*,const void*,int,void*,int(*)(void*,int,const void*,int,const void*));
- int (*create_function)(sqlite3*,const char*,int,int,void*,void (*xFunc)(sqlite3_context*,int,sqlite3_value**),void (*xStep)(sqlite3_context*,int,sqlite3_value**),void (*xFinal)(sqlite3_context*));
- int (*create_function16)(sqlite3*,const void*,int,int,void*,void (*xFunc)(sqlite3_context*,int,sqlite3_value**),void (*xStep)(sqlite3_context*,int,sqlite3_value**),void (*xFinal)(sqlite3_context*));
+ int (*create_collation)(sqlite3*,const char*,int,void*,
+ int(*)(void*,int,const void*,int,const void*));
+ int (*create_collation16)(sqlite3*,const void*,int,void*,
+ int(*)(void*,int,const void*,int,const void*));
+ int (*create_function)(sqlite3*,const char*,int,int,void*,
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
+ void (*xFinal)(sqlite3_context*));
+ int (*create_function16)(sqlite3*,const void*,int,int,void*,
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
+ void (*xFinal)(sqlite3_context*));
int (*create_module)(sqlite3*,const char*,const sqlite3_module*,void*);
int (*data_count)(sqlite3_stmt*pStmt);
sqlite3 * (*db_handle)(sqlite3_stmt*);
@@ -84543,16 +90968,19 @@
void (*result_text16le)(sqlite3_context*,const void*,int,void(*)(void*));
void (*result_value)(sqlite3_context*,sqlite3_value*);
void * (*rollback_hook)(sqlite3*,void(*)(void*),void*);
- int (*set_authorizer)(sqlite3*,int(*)(void*,int,const char*,const char*,const char*,const char*),void*);
+ int (*set_authorizer)(sqlite3*,int(*)(void*,int,const char*,const char*,
+ const char*,const char*),void*);
void (*set_auxdata)(sqlite3_context*,int,void*,void (*)(void*));
char * (*snprintf)(int,char*,const char*,...);
int (*step)(sqlite3_stmt*);
- int (*table_column_metadata)(sqlite3*,const char*,const char*,const char*,char const**,char const**,int*,int*,int*);
+ int (*table_column_metadata)(sqlite3*,const char*,const char*,const char*,
+ char const**,char const**,int*,int*,int*);
void (*thread_cleanup)(void);
int (*total_changes)(sqlite3*);
void * (*trace)(sqlite3*,void(*xTrace)(void*,const char*),void*);
int (*transfer_bindings)(sqlite3_stmt*,sqlite3_stmt*);
- void * (*update_hook)(sqlite3*,void(*)(void*,int ,char const*,char const*,sqlite_int64),void*);
+ void * (*update_hook)(sqlite3*,void(*)(void*,int ,char const*,char const*,
+ sqlite_int64),void*);
void * (*user_data)(sqlite3_context*);
const void * (*value_blob)(sqlite3_value*);
int (*value_bytes)(sqlite3_value*);
@@ -84574,15 +91002,19 @@
int (*prepare16_v2)(sqlite3*,const void*,int,sqlite3_stmt**,const void**);
int (*clear_bindings)(sqlite3_stmt*);
/* Added by 3.4.1 */
- int (*create_module_v2)(sqlite3*,const char*,const sqlite3_module*,void*,void (*xDestroy)(void *));
+ int (*create_module_v2)(sqlite3*,const char*,const sqlite3_module*,void*,
+ void (*xDestroy)(void *));
/* Added by 3.5.0 */
int (*bind_zeroblob)(sqlite3_stmt*,int,int);
int (*blob_bytes)(sqlite3_blob*);
int (*blob_close)(sqlite3_blob*);
- int (*blob_open)(sqlite3*,const char*,const char*,const char*,sqlite3_int64,int,sqlite3_blob**);
+ int (*blob_open)(sqlite3*,const char*,const char*,const char*,sqlite3_int64,
+ int,sqlite3_blob**);
int (*blob_read)(sqlite3_blob*,void*,int,int);
int (*blob_write)(sqlite3_blob*,const void*,int,int);
- int (*create_collation_v2)(sqlite3*,const char*,int,void*,int(*)(void*,int,const void*,int,const void*),void(*)(void*));
+ int (*create_collation_v2)(sqlite3*,const char*,int,void*,
+ int(*)(void*,int,const void*,int,const void*),
+ void(*)(void*));
int (*file_control)(sqlite3*,const char*,int,void*);
sqlite3_int64 (*memory_highwater)(int);
sqlite3_int64 (*memory_used)(void);
@@ -84618,7 +91050,11 @@
int (*backup_step)(sqlite3_backup*,int);
const char *(*compileoption_get)(int);
int (*compileoption_used)(const char*);
- int (*create_function_v2)(sqlite3*,const char*,int,int,void*,void (*xFunc)(sqlite3_context*,int,sqlite3_value**),void (*xStep)(sqlite3_context*,int,sqlite3_value**),void (*xFinal)(sqlite3_context*),void(*xDestroy)(void*));
+ int (*create_function_v2)(sqlite3*,const char*,int,int,void*,
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
+ void (*xFinal)(sqlite3_context*),
+ void(*xDestroy)(void*));
int (*db_config)(sqlite3*,int,...);
sqlite3_mutex *(*db_mutex)(sqlite3*);
int (*db_status)(sqlite3*,int,int*,int*,int);
@@ -84632,6 +91068,9 @@
int (*wal_autocheckpoint)(sqlite3*,int);
int (*wal_checkpoint)(sqlite3*,const char*);
void *(*wal_hook)(sqlite3*,int(*)(void*,sqlite3*,const char*,int),void*);
+ int (*blob_reopen)(sqlite3_blob*,sqlite3_int64);
+ int (*vtab_config)(sqlite3*,int op,...);
+ int (*vtab_on_conflict)(sqlite3*);
};
/*
@@ -84832,6 +91271,9 @@
#define sqlite3_wal_autocheckpoint sqlite3_api->wal_autocheckpoint
#define sqlite3_wal_checkpoint sqlite3_api->wal_checkpoint
#define sqlite3_wal_hook sqlite3_api->wal_hook
+#define sqlite3_blob_reopen sqlite3_api->blob_reopen
+#define sqlite3_vtab_config sqlite3_api->vtab_config
+#define sqlite3_vtab_on_conflict sqlite3_api->vtab_on_conflict
#endif /* SQLITE_CORE */
#define SQLITE_EXTENSION_INIT1 const sqlite3_api_routines *sqlite3_api = 0;
@@ -84841,6 +91283,7 @@
/************** End of sqlite3ext.h ******************************************/
/************** Continuing where we left off in loadext.c ********************/
+/* #include <string.h> */
#ifndef SQLITE_OMIT_LOAD_EXTENSION
@@ -84893,6 +91336,11 @@
# define sqlite3_complete16 0
#endif
+#ifdef SQLITE_OMIT_DECLTYPE
+# define sqlite3_column_decltype16 0
+# define sqlite3_column_decltype 0
+#endif
+
#ifdef SQLITE_OMIT_PROGRESS_CALLBACK
# define sqlite3_progress_handler 0
#endif
@@ -84901,6 +91349,8 @@
# define sqlite3_create_module 0
# define sqlite3_create_module_v2 0
# define sqlite3_declare_vtab 0
+# define sqlite3_vtab_config 0
+# define sqlite3_vtab_on_conflict 0
#endif
#ifdef SQLITE_OMIT_SHARED_CACHE
@@ -84924,6 +91374,7 @@
#define sqlite3_blob_open 0
#define sqlite3_blob_read 0
#define sqlite3_blob_write 0
+#define sqlite3_blob_reopen 0
#endif
/*
@@ -85189,6 +91640,9 @@
0,
0,
#endif
+ sqlite3_blob_reopen,
+ sqlite3_vtab_config,
+ sqlite3_vtab_on_conflict,
};
/*
@@ -85214,7 +91668,7 @@
int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*);
char *zErrmsg = 0;
void **aHandle;
- const int nMsg = 300;
+ int nMsg = 300 + sqlite3Strlen30(zFile);
if( pzErrMsg ) *pzErrMsg = 0;
@@ -85251,6 +91705,7 @@
sqlite3OsDlSym(pVfs, handle, zProc);
if( xInit==0 ){
if( pzErrMsg ){
+ nMsg += sqlite3Strlen30(zProc);
*pzErrMsg = zErrmsg = sqlite3_malloc(nMsg);
if( zErrmsg ){
sqlite3_snprintf(nMsg, zErrmsg,
@@ -85435,6 +91890,7 @@
SQLITE_PRIVATE void sqlite3AutoLoadExtensions(sqlite3 *db){
int i;
int go = 1;
+ int rc;
int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*);
wsdAutoextInit;
@@ -85457,8 +91913,8 @@
}
sqlite3_mutex_leave(mutex);
zErrmsg = 0;
- if( xInit && xInit(db, &zErrmsg, &sqlite3Apis) ){
- sqlite3Error(db, SQLITE_ERROR,
+ if( xInit && (rc = xInit(db, &zErrmsg, &sqlite3Apis))!=0 ){
+ sqlite3Error(db, rc,
"automatic extension loading failed: %s", zErrmsg);
go = 0;
}
@@ -85482,10 +91938,6 @@
** This file contains code used to implement the PRAGMA command.
*/
-/* Ignore this whole file if pragmas are disabled
-*/
-#if !defined(SQLITE_OMIT_PRAGMA)
-
/*
** Interpret the given string as a safety level. Return 0 for OFF,
** 1 for ON or NORMAL and 2 for FULL. Return 1 for an empty or
@@ -85518,10 +91970,16 @@
/*
** Interpret the given string as a boolean value.
*/
-static u8 getBoolean(const char *z){
+SQLITE_PRIVATE u8 sqlite3GetBoolean(const char *z){
return getSafetyLevel(z)&1;
}
+/* The sqlite3GetBoolean() function is used by other modules but the
+** remainder of this file is specific to PRAGMA processing. So omit
+** the rest of the file if PRAGMAs are omitted from the build.
+*/
+#if !defined(SQLITE_OMIT_PRAGMA)
+
/*
** Interpret the given string as a locking mode value.
*/
@@ -85584,7 +92042,7 @@
}
sqlite3BtreeClose(db->aDb[1].pBt);
db->aDb[1].pBt = 0;
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
}
return SQLITE_OK;
}
@@ -85688,7 +92146,7 @@
mask &= ~(SQLITE_ForeignKeys);
}
- if( getBoolean(zRight) ){
+ if( sqlite3GetBoolean(zRight) ){
db->flags |= mask;
}else{
db->flags &= ~mask;
@@ -85813,7 +92271,7 @@
goto pragma_out;
}
-#ifndef SQLITE_OMIT_PAGER_PRAGMAS
+#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && !defined(SQLITE_OMIT_DEPRECATED)
/*
** PRAGMA [database.]default_cache_size
** PRAGMA [database.]default_cache_size=N
@@ -85853,16 +92311,18 @@
sqlite3VdbeChangeP1(v, addr+1, iDb);
sqlite3VdbeChangeP1(v, addr+6, SQLITE_DEFAULT_CACHE_SIZE);
}else{
- int size = sqlite3Atoi(zRight);
- if( size<0 ) size = -size;
+ int size = sqlite3AbsInt32(sqlite3Atoi(zRight));
sqlite3BeginWriteOperation(pParse, 0, iDb);
sqlite3VdbeAddOp2(v, OP_Integer, size, 1);
sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_DEFAULT_CACHE_SIZE, 1);
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
pDb->pSchema->cache_size = size;
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
}
}else
+#endif /* !SQLITE_OMIT_PAGER_PRAGMAS && !SQLITE_OMIT_DEPRECATED */
+#if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
/*
** PRAGMA [database.]page_size
** PRAGMA [database.]page_size=N
@@ -85883,7 +92343,7 @@
** buffer that the pager module resizes using sqlite3_realloc().
*/
db->nextPagesize = sqlite3Atoi(zRight);
- if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize, -1, 0) ){
+ if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize,-1,0) ){
db->mallocFailed = 1;
}
}
@@ -85902,7 +92362,7 @@
int b = -1;
assert( pBt!=0 );
if( zRight ){
- b = getBoolean(zRight);
+ b = sqlite3GetBoolean(zRight);
}
if( pId2->n==0 && b>=0 ){
int ii;
@@ -85923,6 +92383,10 @@
** second form attempts to change this setting. Both
** forms return the current setting.
**
+ ** The absolute value of N is used. This is undocumented and might
+ ** change. The only purpose is to provide an easy way to test
+ ** the sqlite3AbsInt32() function.
+ **
** PRAGMA [database.]page_count
**
** Return the number of pages in the specified database.
@@ -85934,10 +92398,11 @@
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
sqlite3CodeVerifySchema(pParse, iDb);
iReg = ++pParse->nMem;
- if( zLeft[0]=='p' ){
+ if( sqlite3Tolower(zLeft[0])=='p' ){
sqlite3VdbeAddOp2(v, OP_Pagecount, iDb, iReg);
}else{
- sqlite3VdbeAddOp3(v, OP_MaxPgcnt, iDb, iReg, sqlite3Atoi(zRight));
+ sqlite3VdbeAddOp3(v, OP_MaxPgcnt, iDb, iReg,
+ sqlite3AbsInt32(sqlite3Atoi(zRight)));
}
sqlite3VdbeAddOp2(v, OP_ResultRow, iReg, 1);
sqlite3VdbeSetNumCols(v, 1);
@@ -86000,8 +92465,10 @@
int eMode; /* One of the PAGER_JOURNALMODE_XXX symbols */
int ii; /* Loop counter */
- /* Force the schema to be loaded on all databases. This cases all
- ** database files to be opened and the journal_modes set. */
+ /* Force the schema to be loaded on all databases. This causes all
+ ** database files to be opened and the journal_modes set. This is
+ ** necessary because subsequent processing must know if the databases
+ ** are in WAL mode. */
if( sqlite3ReadSchema(pParse) ){
goto pragma_out;
}
@@ -86149,22 +92616,19 @@
** PRAGMA [database.]cache_size=N
**
** The first form reports the current local setting for the
- ** page cache size. The local setting can be different from
- ** the persistent cache size value that is stored in the database
- ** file itself. The value returned is the maximum number of
- ** pages in the page cache. The second form sets the local
- ** page cache size value. It does not change the persistent
- ** cache size stored on the disk so the cache size will revert
- ** to its default value when the database is closed and reopened.
- ** N should be a positive integer.
+ ** page cache size. The second form sets the local
+ ** page cache size value. If N is positive then that is the
+ ** number of pages in the cache. If N is negative, then the
+ ** number of pages is adjusted so that the cache uses -N kibibytes
+ ** of memory.
*/
if( sqlite3StrICmp(zLeft,"cache_size")==0 ){
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
if( !zRight ){
returnSingleInt(pParse, "cache_size", pDb->pSchema->cache_size);
}else{
int size = sqlite3Atoi(zRight);
- if( size<0 ) size = -size;
pDb->pSchema->cache_size = size;
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
}
@@ -86256,7 +92720,7 @@
Pager *pPager = sqlite3BtreePager(pDb->pBt);
char *proxy_file_path = NULL;
sqlite3_file *pFile = sqlite3PagerFile(pPager);
- sqlite3OsFileControl(pFile, SQLITE_GET_LOCKPROXYFILE,
+ sqlite3OsFileControlHint(pFile, SQLITE_GET_LOCKPROXYFILE,
&proxy_file_path);
if( proxy_file_path ){
@@ -86502,7 +92966,7 @@
#ifndef NDEBUG
if( sqlite3StrICmp(zLeft, "parser_trace")==0 ){
if( zRight ){
- if( getBoolean(zRight) ){
+ if( sqlite3GetBoolean(zRight) ){
sqlite3ParserTrace(stderr, "parser: ");
}else{
sqlite3ParserTrace(0, 0);
@@ -86516,7 +92980,7 @@
*/
if( sqlite3StrICmp(zLeft, "case_sensitive_like")==0 ){
if( zRight ){
- sqlite3RegisterLikeFunctions(db, getBoolean(zRight));
+ sqlite3RegisterLikeFunctions(db, sqlite3GetBoolean(zRight));
}
}else
@@ -86545,7 +93009,7 @@
{ OP_ResultRow, 3, 1, 0},
};
- int isQuick = (zLeft[0]=='q');
+ int isQuick = (sqlite3Tolower(zLeft[0])=='q');
/* Initialize the VDBE program */
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
@@ -86581,6 +93045,7 @@
** Begin by filling registers 2, 3, ... with the root pages numbers
** for all tables and indices in the database.
*/
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
pTbls = &db->aDb[i].pSchema->tblHash;
for(x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){
Table *pTab = sqliteHashData(x);
@@ -86646,7 +93111,7 @@
addr = sqlite3VdbeAddOpList(v, ArraySize(idxErr), idxErr);
sqlite3VdbeChangeP4(v, addr+1, "rowid ", P4_STATIC);
sqlite3VdbeChangeP4(v, addr+3, " missing from index ", P4_STATIC);
- sqlite3VdbeChangeP4(v, addr+4, pIdx->zName, P4_STATIC);
+ sqlite3VdbeChangeP4(v, addr+4, pIdx->zName, P4_TRANSIENT);
sqlite3VdbeJumpHere(v, addr+9);
sqlite3VdbeJumpHere(v, jmp2);
}
@@ -86676,7 +93141,7 @@
sqlite3VdbeJumpHere(v, addr+4);
sqlite3VdbeChangeP4(v, addr+6,
"wrong # of entries in index ", P4_STATIC);
- sqlite3VdbeChangeP4(v, addr+7, pIdx->zName, P4_STATIC);
+ sqlite3VdbeChangeP4(v, addr+7, pIdx->zName, P4_TRANSIENT);
}
}
}
@@ -86855,13 +93320,29 @@
#ifndef SQLITE_OMIT_WAL
/*
- ** PRAGMA [database.]wal_checkpoint
+ ** PRAGMA [database.]wal_checkpoint = passive|full|restart
**
** Checkpoint the database.
*/
if( sqlite3StrICmp(zLeft, "wal_checkpoint")==0 ){
+ int iBt = (pId2->z?iDb:SQLITE_MAX_ATTACHED);
+ int eMode = SQLITE_CHECKPOINT_PASSIVE;
+ if( zRight ){
+ if( sqlite3StrICmp(zRight, "full")==0 ){
+ eMode = SQLITE_CHECKPOINT_FULL;
+ }else if( sqlite3StrICmp(zRight, "restart")==0 ){
+ eMode = SQLITE_CHECKPOINT_RESTART;
+ }
+ }
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
- sqlite3VdbeAddOp3(v, OP_Checkpoint, pId2->z?iDb:SQLITE_MAX_ATTACHED, 0, 0);
+ sqlite3VdbeSetNumCols(v, 3);
+ pParse->nMem = 3;
+ sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "busy", SQLITE_STATIC);
+ sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "log", SQLITE_STATIC);
+ sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "checkpointed", SQLITE_STATIC);
+
+ sqlite3VdbeAddOp3(v, OP_Checkpoint, iBt, eMode, 1);
+ sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
}else
/*
@@ -86882,6 +93363,16 @@
}else
#endif
+ /*
+ ** PRAGMA shrink_memory
+ **
+ ** This pragma attempts to free as much memory as possible from the
+ ** current database connection.
+ */
+ if( sqlite3StrICmp(zLeft, "shrink_memory")==0 ){
+ sqlite3_db_release_memory(db);
+ }else
+
#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
/*
** Report the current state of file logs for all databases
@@ -87012,7 +93503,7 @@
"%s - %s", *pData->pzErrMsg, zExtra);
}
}
- pData->rc = db->mallocFailed ? SQLITE_NOMEM : SQLITE_CORRUPT;
+ pData->rc = db->mallocFailed ? SQLITE_NOMEM : SQLITE_CORRUPT_BKPT;
}
/*
@@ -87119,7 +93610,7 @@
int meta[5];
InitData initData;
char const *zMasterSchema;
- char const *zMasterName = SCHEMA_TABLE(iDb);
+ char const *zMasterName;
int openedTransaction = 0;
/*
@@ -87256,10 +93747,13 @@
pDb->pSchema->enc = ENC(db);
if( pDb->pSchema->cache_size==0 ){
- size = meta[BTREE_DEFAULT_CACHE_SIZE-1];
+#ifndef SQLITE_OMIT_DEPRECATED
+ size = sqlite3AbsInt32(meta[BTREE_DEFAULT_CACHE_SIZE-1]);
if( size==0 ){ size = SQLITE_DEFAULT_CACHE_SIZE; }
- if( size<0 ) size = -size;
pDb->pSchema->cache_size = size;
+#else
+ pDb->pSchema->cache_size = SQLITE_DEFAULT_CACHE_SIZE;
+#endif
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
}
@@ -87317,7 +93811,7 @@
}
if( db->mallocFailed ){
rc = SQLITE_NOMEM;
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
}
if( rc==SQLITE_OK || (db->flags&SQLITE_RecoveryMode)){
/* Black magic: If the SQLITE_RecoveryMode flag is set, then consider
@@ -87449,7 +93943,9 @@
** value stored as part of the in-memory schema representation,
** set Parse.rc to SQLITE_SCHEMA. */
sqlite3BtreeGetMeta(pBt, BTREE_SCHEMA_VERSION, (u32 *)&cookie);
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
if( cookie!=db->aDb[iDb].pSchema->schema_cookie ){
+ sqlite3ResetInternalSchema(db, iDb);
pParse->rc = SQLITE_SCHEMA;
}
@@ -87591,9 +94087,6 @@
if( pParse->checkSchema ){
schemaIsValid(pParse);
}
- if( pParse->rc==SQLITE_SCHEMA ){
- sqlite3ResetInternalSchema(db, 0);
- }
if( db->mallocFailed ){
pParse->rc = SQLITE_NOMEM;
}
@@ -87762,7 +94255,7 @@
*/
static int sqlite3Prepare16(
sqlite3 *db, /* Database handle. */
- const void *zSql, /* UTF-8 encoded SQL statement. */
+ const void *zSql, /* UTF-16 encoded SQL statement. */
int nBytes, /* Length of zSql in bytes. */
int saveSqlFlag, /* True to save SQL text into the sqlite3_stmt */
sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */
@@ -87812,7 +94305,7 @@
*/
SQLITE_API int sqlite3_prepare16(
sqlite3 *db, /* Database handle. */
- const void *zSql, /* UTF-8 encoded SQL statement. */
+ const void *zSql, /* UTF-16 encoded SQL statement. */
int nBytes, /* Length of zSql in bytes. */
sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */
const void **pzTail /* OUT: End of parsed string */
@@ -87824,7 +94317,7 @@
}
SQLITE_API int sqlite3_prepare16_v2(
sqlite3 *db, /* Database handle. */
- const void *zSql, /* UTF-8 encoded SQL statement. */
+ const void *zSql, /* UTF-16 encoded SQL statement. */
int nBytes, /* Length of zSql in bytes. */
sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */
const void **pzTail /* OUT: End of parsed string */
@@ -87905,6 +94398,7 @@
pNew = sqlite3DbMallocZero(db, sizeof(*pNew) );
assert( db->mallocFailed || !pOffset || pLimit ); /* OFFSET implies LIMIT */
if( pNew==0 ){
+ assert( db->mallocFailed );
pNew = &standin;
memset(pNew, 0, sizeof(*pNew));
}
@@ -87929,7 +94423,10 @@
clearSelect(db, pNew);
if( pNew!=&standin ) sqlite3DbFree(db, pNew);
pNew = 0;
+ }else{
+ assert( pNew->pSrc!=0 || pParse->nErr>0 );
}
+ assert( pNew!=&standin );
return pNew;
}
@@ -88259,12 +94756,18 @@
int nExpr = pOrderBy->nExpr;
int regBase = sqlite3GetTempRange(pParse, nExpr+2);
int regRecord = sqlite3GetTempReg(pParse);
+ int op;
sqlite3ExprCacheClear(pParse);
sqlite3ExprCodeExprList(pParse, pOrderBy, regBase, 0);
sqlite3VdbeAddOp2(v, OP_Sequence, pOrderBy->iECursor, regBase+nExpr);
sqlite3ExprCodeMove(pParse, regData, regBase+nExpr+1, 1);
sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nExpr + 2, regRecord);
- sqlite3VdbeAddOp2(v, OP_IdxInsert, pOrderBy->iECursor, regRecord);
+ if( pSelect->selFlags & SF_UseSorter ){
+ op = OP_SorterInsert;
+ }else{
+ op = OP_IdxInsert;
+ }
+ sqlite3VdbeAddOp2(v, op, pOrderBy->iECursor, regRecord);
sqlite3ReleaseTempReg(pParse, regRecord);
sqlite3ReleaseTempRange(pParse, regBase, nExpr+2);
if( pSelect->iLimit ){
@@ -88647,6 +95150,22 @@
}
/*
+** Assign expression b to lvalue a. A second, no-op, version of this macro
+** is provided when SQLITE_OMIT_EXPLAIN is defined. This allows the code
+** in sqlite3Select() to assign values to structure member variables that
+** only exist if SQLITE_OMIT_EXPLAIN is not defined without polluting the
+** code with #ifndef directives.
+*/
+# define explainSetInteger(a, b) a = b
+
+#else
+/* No-op versions of the explainXXX() functions and macros. */
+# define explainTempTable(y,z)
+# define explainSetInteger(y,z)
+#endif
+
+#if !defined(SQLITE_OMIT_EXPLAIN) && !defined(SQLITE_OMIT_COMPOUND_SELECT)
+/*
** Unless an "EXPLAIN QUERY PLAN" command is being processed, this function
** is a no-op. Otherwise, it adds a single row of output to the EQP result,
** where the caption is of one of the two forms:
@@ -88677,21 +95196,9 @@
sqlite3VdbeAddOp4(v, OP_Explain, pParse->iSelectId, 0, 0, zMsg, P4_DYNAMIC);
}
}
-
-/*
-** Assign expression b to lvalue a. A second, no-op, version of this macro
-** is provided when SQLITE_OMIT_EXPLAIN is defined. This allows the code
-** in sqlite3Select() to assign values to structure member variables that
-** only exist if SQLITE_OMIT_EXPLAIN is not defined without polluting the
-** code with #ifndef directives.
-*/
-# define explainSetInteger(a, b) a = b
-
#else
/* No-op versions of the explainXXX() functions and macros. */
-# define explainTempTable(y,z)
# define explainComposite(v,w,x,y,z)
-# define explainSetInteger(y,z)
#endif
/*
@@ -88729,9 +95236,20 @@
}else{
regRowid = sqlite3GetTempReg(pParse);
}
- addr = 1 + sqlite3VdbeAddOp2(v, OP_Sort, iTab, addrBreak);
- codeOffset(v, p, addrContinue);
- sqlite3VdbeAddOp3(v, OP_Column, iTab, pOrderBy->nExpr + 1, regRow);
+ if( p->selFlags & SF_UseSorter ){
+ int regSortOut = ++pParse->nMem;
+ int ptab2 = pParse->nTab++;
+ sqlite3VdbeAddOp3(v, OP_OpenPseudo, ptab2, regSortOut, pOrderBy->nExpr+2);
+ addr = 1 + sqlite3VdbeAddOp2(v, OP_SorterSort, iTab, addrBreak);
+ codeOffset(v, p, addrContinue);
+ sqlite3VdbeAddOp2(v, OP_SorterData, iTab, regSortOut);
+ sqlite3VdbeAddOp3(v, OP_Column, ptab2, pOrderBy->nExpr+1, regRow);
+ sqlite3VdbeChangeP5(v, OPFLAG_CLEARCACHE);
+ }else{
+ addr = 1 + sqlite3VdbeAddOp2(v, OP_Sort, iTab, addrBreak);
+ codeOffset(v, p, addrContinue);
+ sqlite3VdbeAddOp3(v, OP_Column, iTab, pOrderBy->nExpr+1, regRow);
+ }
switch( eDest ){
case SRT_Table:
case SRT_EphemTab: {
@@ -88784,7 +95302,11 @@
/* The bottom of the loop
*/
sqlite3VdbeResolveLabel(v, addrContinue);
- sqlite3VdbeAddOp2(v, OP_Next, iTab, addr);
+ if( p->selFlags & SF_UseSorter ){
+ sqlite3VdbeAddOp2(v, OP_SorterNext, iTab, addr);
+ }else{
+ sqlite3VdbeAddOp2(v, OP_Next, iTab, addr);
+ }
sqlite3VdbeResolveLabel(v, addrBreak);
if( eDest==SRT_Output || eDest==SRT_Coroutine ){
sqlite3VdbeAddOp2(v, OP_Close, pseudoTab, 0);
@@ -89083,7 +95605,10 @@
}else{
Expr *pColExpr = p; /* The expression that is the result column name */
Table *pTab; /* Table associated with this expression */
- while( pColExpr->op==TK_DOT ) pColExpr = pColExpr->pRight;
+ while( pColExpr->op==TK_DOT ){
+ pColExpr = pColExpr->pRight;
+ assert( pColExpr!=0 );
+ }
if( pColExpr->op==TK_COLUMN && ALWAYS(pColExpr->pTab!=0) ){
/* For columns use the column name name */
int iCol = pColExpr->iColumn;
@@ -90027,8 +96552,8 @@
for(i=1; db->mallocFailed==0 && i<=p->pEList->nExpr; i++){
struct ExprList_item *pItem;
for(j=0, pItem=pOrderBy->a; j<nOrderBy; j++, pItem++){
- assert( pItem->iCol>0 );
- if( pItem->iCol==i ) break;
+ assert( pItem->iOrderByCol>0 );
+ if( pItem->iOrderByCol==i ) break;
}
if( j==nOrderBy ){
Expr *pNew = sqlite3Expr(db, TK_INTEGER, 0);
@@ -90036,7 +96561,7 @@
pNew->flags |= EP_IntValue;
pNew->u.iValue = i;
pOrderBy = sqlite3ExprListAppend(pParse, pOrderBy, pNew);
- pOrderBy->a[nOrderBy++].iCol = (u16)i;
+ pOrderBy->a[nOrderBy++].iOrderByCol = (u16)i;
}
}
}
@@ -90052,8 +96577,8 @@
if( aPermute ){
struct ExprList_item *pItem;
for(i=0, pItem=pOrderBy->a; i<nOrderBy; i++, pItem++){
- assert( pItem->iCol>0 && pItem->iCol<=p->pEList->nExpr );
- aPermute[i] = pItem->iCol - 1;
+ assert( pItem->iOrderByCol>0 && pItem->iOrderByCol<=p->pEList->nExpr );
+ aPermute[i] = pItem->iOrderByCol - 1;
}
pKeyMerge =
sqlite3DbMallocRaw(db, sizeof(*pKeyMerge)+nOrderBy*(sizeof(CollSeq*)+1));
@@ -90396,9 +96921,8 @@
#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW)
/*
-** This routine attempts to flatten subqueries in order to speed
-** execution. It returns 1 if it makes changes and 0 if no flattening
-** occurs.
+** This routine attempts to flatten subqueries as a performance optimization.
+** This routine returns 1 if it makes changes and 0 if no flattening occurs.
**
** To understand the concept of flattening, consider the following
** query:
@@ -90440,7 +96964,10 @@
** (6) The subquery does not use aggregates or the outer query is not
** DISTINCT.
**
-** (7) The subquery has a FROM clause.
+** (7) The subquery has a FROM clause. TODO: For subqueries without
+** A FROM clause, consider adding a FROM close with the special
+** table sqlite_once that consists of a single row containing a
+** single NULL.
**
** (8) The subquery does not use LIMIT or the outer query is not a join.
**
@@ -90473,11 +97000,14 @@
**
** * is not itself part of a compound select,
** * is not an aggregate or DISTINCT query, and
-** * has no other tables or sub-selects in the FROM clause.
+** * is not a join
**
** The parent and sub-query may contain WHERE clauses. Subject to
** rules (11), (13) and (14), they may also contain ORDER BY,
-** LIMIT and OFFSET clauses.
+** LIMIT and OFFSET clauses. The subquery cannot use any compound
+** operator other than UNION ALL because all the other compound
+** operators have an implied DISTINCT which is disallowed by
+** restriction (4).
**
** (18) If the sub-query is a compound select, then all terms of the
** ORDER by clause of the parent must be simple references to
@@ -90489,9 +97019,12 @@
** (20) If the sub-query is a compound select, then it must not use
** an ORDER BY clause. Ticket #3773. We could relax this constraint
** somewhat by saying that the terms of the ORDER BY clause must
-** appear as unmodified result columns in the outer query. But
+** appear as unmodified result columns in the outer query. But we
** have other optimizations in mind to deal with that case.
**
+** (21) The subquery does not use LIMIT or the outer query is not
+** DISTINCT. (See ticket [752e1646fc]).
+**
** In this routine, the "p" parameter is a pointer to the outer query.
** The subquery is p->pSrc->a[iFrom]. isAgg is true if the outer query
** uses aggregates and subqueryIsAgg is true if the subquery uses aggregates.
@@ -90560,6 +97093,9 @@
}
if( isAgg && pSub->pOrderBy ) return 0; /* Restriction (16) */
if( pSub->pLimit && p->pWhere ) return 0; /* Restriction (19) */
+ if( pSub->pLimit && (p->selFlags & SF_Distinct)!=0 ){
+ return 0; /* Restriction (21) */
+ }
/* OBSOLETE COMMENT 1:
** Restriction 3: If the subquery is a join, make sure the subquery is
@@ -90612,19 +97148,21 @@
for(pSub1=pSub; pSub1; pSub1=pSub1->pPrior){
testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct );
testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Aggregate );
+ assert( pSub->pSrc!=0 );
if( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))!=0
|| (pSub1->pPrior && pSub1->op!=TK_ALL)
- || NEVER(pSub1->pSrc==0) || pSub1->pSrc->nSrc!=1
+ || pSub1->pSrc->nSrc<1
){
return 0;
}
+ testcase( pSub1->pSrc->nSrc>1 );
}
/* Restriction 18. */
if( p->pOrderBy ){
int ii;
for(ii=0; ii<p->pOrderBy->nExpr; ii++){
- if( p->pOrderBy->a[ii].iCol==0 ) return 0;
+ if( p->pOrderBy->a[ii].iOrderByCol==0 ) return 0;
}
}
}
@@ -91453,6 +97991,32 @@
}
/*
+** Add a single OP_Explain instruction to the VDBE to explain a simple
+** count(*) query ("SELECT count(*) FROM pTab").
+*/
+#ifndef SQLITE_OMIT_EXPLAIN
+static void explainSimpleCount(
+ Parse *pParse, /* Parse context */
+ Table *pTab, /* Table being queried */
+ Index *pIdx /* Index used to optimize scan, or NULL */
+){
+ if( pParse->explain==2 ){
+ char *zEqp = sqlite3MPrintf(pParse->db, "SCAN TABLE %s %s%s(~%d rows)",
+ pTab->zName,
+ pIdx ? "USING COVERING INDEX " : "",
+ pIdx ? pIdx->zName : "",
+ pTab->nRowEst
+ );
+ sqlite3VdbeAddOp4(
+ pParse->pVdbe, OP_Explain, pParse->iSelectId, 0, 0, zEqp, P4_DYNAMIC
+ );
+ }
+}
+#else
+# define explainSimpleCount(a,b,c)
+#endif
+
+/*
** Generate code for the SELECT statement given in the p argument.
**
** The results are distributed in various ways depending on the
@@ -91525,6 +98089,7 @@
int distinct; /* Table to use for the distinct set */
int rc = 1; /* Value to return from this function */
int addrSortIndex; /* Address of an OP_OpenEphemeral instruction */
+ int addrDistinctIndex; /* Address of an OP_OpenEphemeral instruction */
AggInfo sAggInfo; /* Information used by aggregate queries */
int iEnd; /* Address of the end of the query */
sqlite3 *db; /* The database connection */
@@ -91583,7 +98148,11 @@
Select *pSub = pItem->pSelect;
int isAggSub;
- if( pSub==0 || pItem->isPopulated ) continue;
+ if( pSub==0 ) continue;
+ if( pItem->addrFillSub ){
+ sqlite3VdbeAddOp2(v, OP_Gosub, pItem->regReturn, pItem->addrFillSub);
+ continue;
+ }
/* Increment Parse.nHeight by the height of the largest expression
** tree refered to by this, the parent select. The child select
@@ -91594,21 +98163,43 @@
*/
pParse->nHeight += sqlite3SelectExprHeight(p);
- /* Check to see if the subquery can be absorbed into the parent. */
isAggSub = (pSub->selFlags & SF_Aggregate)!=0;
if( flattenSubquery(pParse, p, i, isAgg, isAggSub) ){
+ /* This subquery can be absorbed into its parent. */
if( isAggSub ){
isAgg = 1;
p->selFlags |= SF_Aggregate;
}
i = -1;
}else{
+ /* Generate a subroutine that will fill an ephemeral table with
+ ** the content of this subquery. pItem->addrFillSub will point
+ ** to the address of the generated subroutine. pItem->regReturn
+ ** is a register allocated to hold the subroutine return address
+ */
+ int topAddr;
+ int onceAddr = 0;
+ int retAddr;
+ assert( pItem->addrFillSub==0 );
+ pItem->regReturn = ++pParse->nMem;
+ topAddr = sqlite3VdbeAddOp2(v, OP_Integer, 0, pItem->regReturn);
+ pItem->addrFillSub = topAddr+1;
+ VdbeNoopComment((v, "materialize %s", pItem->pTab->zName));
+ if( pItem->isCorrelated==0 ){
+ /* If the subquery is no correlated and if we are not inside of
+ ** a trigger, then we only need to compute the value of the subquery
+ ** once. */
+ onceAddr = sqlite3CodeOnce(pParse);
+ }
sqlite3SelectDestInit(&dest, SRT_EphemTab, pItem->iCursor);
- assert( pItem->isPopulated==0 );
explainSetInteger(pItem->iSelectId, (u8)pParse->iNextSelectId);
sqlite3Select(pParse, pSub, &dest);
- pItem->isPopulated = 1;
pItem->pTab->nRowEst = (unsigned)pSub->nSelectRow;
+ if( onceAddr ) sqlite3VdbeJumpHere(v, onceAddr);
+ retAddr = sqlite3VdbeAddOp1(v, OP_Return, pItem->regReturn);
+ VdbeComment((v, "end %s", pItem->pTab->zName));
+ sqlite3VdbeChangeP1(v, topAddr, retAddr);
+ sqlite3ClearTempRegCache(pParse);
}
if( /*pParse->nErr ||*/ db->mallocFailed ){
goto select_end;
@@ -91651,16 +98242,6 @@
}
#endif
- /* If possible, rewrite the query to use GROUP BY instead of DISTINCT.
- ** GROUP BY might use an index, DISTINCT never does.
- */
- assert( p->pGroupBy==0 || (p->selFlags & SF_Aggregate)!=0 );
- if( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct ){
- p->pGroupBy = sqlite3ExprListDup(db, p->pEList, 0);
- pGroupBy = p->pGroupBy;
- p->selFlags &= ~SF_Distinct;
- }
-
/* If there is both a GROUP BY and an ORDER BY clause and they are
** identical, then disable the ORDER BY clause since the GROUP BY
** will cause elements to come out in the correct order. This is
@@ -91673,6 +98254,30 @@
pOrderBy = 0;
}
+ /* If the query is DISTINCT with an ORDER BY but is not an aggregate, and
+ ** if the select-list is the same as the ORDER BY list, then this query
+ ** can be rewritten as a GROUP BY. In other words, this:
+ **
+ ** SELECT DISTINCT xyz FROM ... ORDER BY xyz
+ **
+ ** is transformed to:
+ **
+ ** SELECT xyz FROM ... GROUP BY xyz
+ **
+ ** The second form is preferred as a single index (or temp-table) may be
+ ** used for both the ORDER BY and DISTINCT processing. As originally
+ ** written the query must use a temp-table for at least one of the ORDER
+ ** BY and DISTINCT, and an index or separate temp-table for the other.
+ */
+ if( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct
+ && sqlite3ExprListCompare(pOrderBy, p->pEList)==0
+ ){
+ p->selFlags &= ~SF_Distinct;
+ p->pGroupBy = sqlite3ExprListDup(db, p->pEList, 0);
+ pGroupBy = p->pGroupBy;
+ pOrderBy = 0;
+ }
+
/* If there is an ORDER BY clause, then this sorting
** index might end up being unused if the data can be
** extracted in pre-sorted order. If that is the case, then the
@@ -91703,27 +98308,30 @@
iEnd = sqlite3VdbeMakeLabel(v);
p->nSelectRow = (double)LARGEST_INT64;
computeLimitRegisters(pParse, p, iEnd);
+ if( p->iLimit==0 && addrSortIndex>=0 ){
+ sqlite3VdbeGetOp(v, addrSortIndex)->opcode = OP_SorterOpen;
+ p->selFlags |= SF_UseSorter;
+ }
/* Open a virtual index to use for the distinct set.
*/
if( p->selFlags & SF_Distinct ){
KeyInfo *pKeyInfo;
- assert( isAgg || pGroupBy );
distinct = pParse->nTab++;
pKeyInfo = keyInfoFromExprList(pParse, p->pEList);
- sqlite3VdbeAddOp4(v, OP_OpenEphemeral, distinct, 0, 0,
- (char*)pKeyInfo, P4_KEYINFO_HANDOFF);
+ addrDistinctIndex = sqlite3VdbeAddOp4(v, OP_OpenEphemeral, distinct, 0, 0,
+ (char*)pKeyInfo, P4_KEYINFO_HANDOFF);
sqlite3VdbeChangeP5(v, BTREE_UNORDERED);
}else{
- distinct = -1;
+ distinct = addrDistinctIndex = -1;
}
/* Aggregate and non-aggregate queries are handled differently */
if( !isAgg && pGroupBy==0 ){
- /* This case is for non-aggregate queries
- ** Begin the database scan
- */
- pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pOrderBy, 0);
+ ExprList *pDist = (isDistinct ? p->pEList : 0);
+
+ /* Begin the database scan. */
+ pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pOrderBy, pDist, 0);
if( pWInfo==0 ) goto select_end;
if( pWInfo->nRowOut < p->nSelectRow ) p->nSelectRow = pWInfo->nRowOut;
@@ -91732,14 +98340,56 @@
** into an OP_Noop.
*/
if( addrSortIndex>=0 && pOrderBy==0 ){
- sqlite3VdbeChangeToNoop(v, addrSortIndex, 1);
+ sqlite3VdbeChangeToNoop(v, addrSortIndex);
p->addrOpenEphm[2] = -1;
}
- /* Use the standard inner loop
- */
- assert(!isDistinct);
- selectInnerLoop(pParse, p, pEList, 0, 0, pOrderBy, -1, pDest,
+ if( pWInfo->eDistinct ){
+ VdbeOp *pOp; /* No longer required OpenEphemeral instr. */
+
+ assert( addrDistinctIndex>=0 );
+ pOp = sqlite3VdbeGetOp(v, addrDistinctIndex);
+
+ assert( isDistinct );
+ assert( pWInfo->eDistinct==WHERE_DISTINCT_ORDERED
+ || pWInfo->eDistinct==WHERE_DISTINCT_UNIQUE
+ );
+ distinct = -1;
+ if( pWInfo->eDistinct==WHERE_DISTINCT_ORDERED ){
+ int iJump;
+ int iExpr;
+ int iFlag = ++pParse->nMem;
+ int iBase = pParse->nMem+1;
+ int iBase2 = iBase + pEList->nExpr;
+ pParse->nMem += (pEList->nExpr*2);
+
+ /* Change the OP_OpenEphemeral coded earlier to an OP_Integer. The
+ ** OP_Integer initializes the "first row" flag. */
+ pOp->opcode = OP_Integer;
+ pOp->p1 = 1;
+ pOp->p2 = iFlag;
+
+ sqlite3ExprCodeExprList(pParse, pEList, iBase, 1);
+ iJump = sqlite3VdbeCurrentAddr(v) + 1 + pEList->nExpr + 1 + 1;
+ sqlite3VdbeAddOp2(v, OP_If, iFlag, iJump-1);
+ for(iExpr=0; iExpr<pEList->nExpr; iExpr++){
+ CollSeq *pColl = sqlite3ExprCollSeq(pParse, pEList->a[iExpr].pExpr);
+ sqlite3VdbeAddOp3(v, OP_Ne, iBase+iExpr, iJump, iBase2+iExpr);
+ sqlite3VdbeChangeP4(v, -1, (const char *)pColl, P4_COLLSEQ);
+ sqlite3VdbeChangeP5(v, SQLITE_NULLEQ);
+ }
+ sqlite3VdbeAddOp2(v, OP_Goto, 0, pWInfo->iContinue);
+
+ sqlite3VdbeAddOp2(v, OP_Integer, 0, iFlag);
+ assert( sqlite3VdbeCurrentAddr(v)==iJump );
+ sqlite3VdbeAddOp3(v, OP_Move, iBase, iBase2, pEList->nExpr);
+ }else{
+ pOp->opcode = OP_Noop;
+ }
+ }
+
+ /* Use the standard inner loop. */
+ selectInnerLoop(pParse, p, pEList, 0, 0, pOrderBy, distinct, pDest,
pWInfo->iContinue, pWInfo->iBreak);
/* End the database scan loop.
@@ -91756,6 +98406,8 @@
int iAbortFlag; /* Mem address which causes query abort if positive */
int groupBySort; /* Rows come from source in GROUP BY order */
int addrEnd; /* End of processing for this SELECT */
+ int sortPTab = 0; /* Pseudotable used to decode sorting results */
+ int sortOut = 0; /* Output register from the sorter */
/* Remove any and all aliases between the result set and the
** GROUP BY clause.
@@ -91817,12 +98469,12 @@
/* If there is a GROUP BY clause we might need a sorting index to
** implement it. Allocate that sorting index now. If it turns out
- ** that we do not need it after all, the OpenEphemeral instruction
+ ** that we do not need it after all, the OP_SorterOpen instruction
** will be converted into a Noop.
*/
sAggInfo.sortingIdx = pParse->nTab++;
pKeyInfo = keyInfoFromExprList(pParse, pGroupBy);
- addrSortingIdx = sqlite3VdbeAddOp4(v, OP_OpenEphemeral,
+ addrSortingIdx = sqlite3VdbeAddOp4(v, OP_SorterOpen,
sAggInfo.sortingIdx, sAggInfo.nSortingColumn,
0, (char*)pKeyInfo, P4_KEYINFO_HANDOFF);
@@ -91842,6 +98494,7 @@
VdbeComment((v, "clear abort flag"));
sqlite3VdbeAddOp2(v, OP_Integer, 0, iUseFlag);
VdbeComment((v, "indicate accumulator empty"));
+ sqlite3VdbeAddOp3(v, OP_Null, 0, iAMem, iAMem+pGroupBy->nExpr-1);
/* Begin a loop that will extract all source rows in GROUP BY order.
** This might involve two separate loops with an OP_Sort in between, or
@@ -91849,7 +98502,7 @@
** in the right order to begin with.
*/
sqlite3VdbeAddOp2(v, OP_Gosub, regReset, addrReset);
- pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pGroupBy, 0);
+ pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pGroupBy, 0, 0);
if( pWInfo==0 ) goto select_end;
if( pGroupBy==0 ){
/* The optimizer is able to deliver rows in group by order so
@@ -91903,11 +98556,14 @@
}
regRecord = sqlite3GetTempReg(pParse);
sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nCol, regRecord);
- sqlite3VdbeAddOp2(v, OP_IdxInsert, sAggInfo.sortingIdx, regRecord);
+ sqlite3VdbeAddOp2(v, OP_SorterInsert, sAggInfo.sortingIdx, regRecord);
sqlite3ReleaseTempReg(pParse, regRecord);
sqlite3ReleaseTempRange(pParse, regBase, nCol);
sqlite3WhereEnd(pWInfo);
- sqlite3VdbeAddOp2(v, OP_Sort, sAggInfo.sortingIdx, addrEnd);
+ sAggInfo.sortingIdxPTab = sortPTab = pParse->nTab++;
+ sortOut = sqlite3GetTempReg(pParse);
+ sqlite3VdbeAddOp3(v, OP_OpenPseudo, sortPTab, sortOut, nCol);
+ sqlite3VdbeAddOp2(v, OP_SorterSort, sAggInfo.sortingIdx, addrEnd);
VdbeComment((v, "GROUP BY sort"));
sAggInfo.useSortingIdx = 1;
sqlite3ExprCacheClear(pParse);
@@ -91920,9 +98576,13 @@
*/
addrTopOfLoop = sqlite3VdbeCurrentAddr(v);
sqlite3ExprCacheClear(pParse);
+ if( groupBySort ){
+ sqlite3VdbeAddOp2(v, OP_SorterData, sAggInfo.sortingIdx, sortOut);
+ }
for(j=0; j<pGroupBy->nExpr; j++){
if( groupBySort ){
- sqlite3VdbeAddOp3(v, OP_Column, sAggInfo.sortingIdx, j, iBMem+j);
+ sqlite3VdbeAddOp3(v, OP_Column, sortPTab, j, iBMem+j);
+ if( j==0 ) sqlite3VdbeChangeP5(v, OPFLAG_CLEARCACHE);
}else{
sAggInfo.directMode = 1;
sqlite3ExprCode(pParse, pGroupBy->a[j].pExpr, iBMem+j);
@@ -91961,10 +98621,10 @@
/* End of the loop
*/
if( groupBySort ){
- sqlite3VdbeAddOp2(v, OP_Next, sAggInfo.sortingIdx, addrTopOfLoop);
+ sqlite3VdbeAddOp2(v, OP_SorterNext, sAggInfo.sortingIdx, addrTopOfLoop);
}else{
sqlite3WhereEnd(pWInfo);
- sqlite3VdbeChangeToNoop(v, addrSortingIdx, 1);
+ sqlite3VdbeChangeToNoop(v, addrSortingIdx);
}
/* Output the final row of result
@@ -92043,11 +98703,13 @@
** and pKeyInfo to the KeyInfo structure required to navigate the
** index.
**
+ ** (2011-04-15) Do not do a full scan of an unordered index.
+ **
** In practice the KeyInfo structure will not be used. It is only
** passed to keep OP_OpenRead happy.
*/
for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
- if( !pBest || pIdx->nColumn<pBest->nColumn ){
+ if( pIdx->bUnordered==0 && (!pBest || pIdx->nColumn<pBest->nColumn) ){
pBest = pIdx;
}
}
@@ -92063,6 +98725,7 @@
}
sqlite3VdbeAddOp2(v, OP_Count, iCsr, sAggInfo.aFunc[0].iMem);
sqlite3VdbeAddOp1(v, OP_Close, iCsr);
+ explainSimpleCount(pParse, pTab, pBest);
}else
#endif /* SQLITE_OMIT_BTREECOUNT */
{
@@ -92108,7 +98771,7 @@
** of output.
*/
resetAccumulator(pParse, &sAggInfo);
- pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pMinMax, flag);
+ pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pMinMax, 0, flag);
if( pWInfo==0 ){
sqlite3ExprListDelete(db, pDel);
goto select_end;
@@ -92171,98 +98834,98 @@
return rc;
}
-#if defined(SQLITE_DEBUG)
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
/*
-*******************************************************************************
-** The following code is used for testing and debugging only. The code
-** that follows does not appear in normal builds.
-**
-** These routines are used to print out the content of all or part of a
-** parse structures such as Select or Expr. Such printouts are useful
-** for helping to understand what is happening inside the code generator
-** during the execution of complex SELECT statements.
-**
-** These routine are not called anywhere from within the normal
-** code base. Then are intended to be called from within the debugger
-** or from temporary "printf" statements inserted for debugging.
+** Generate a human-readable description of a the Select object.
*/
-SQLITE_PRIVATE void sqlite3PrintExpr(Expr *p){
- if( !ExprHasProperty(p, EP_IntValue) && p->u.zToken ){
- sqlite3DebugPrintf("(%s", p->u.zToken);
- }else{
- sqlite3DebugPrintf("(%d", p->op);
- }
- if( p->pLeft ){
- sqlite3DebugPrintf(" ");
- sqlite3PrintExpr(p->pLeft);
- }
- if( p->pRight ){
- sqlite3DebugPrintf(" ");
- sqlite3PrintExpr(p->pRight);
- }
- sqlite3DebugPrintf(")");
-}
-SQLITE_PRIVATE void sqlite3PrintExprList(ExprList *pList){
- int i;
- for(i=0; i<pList->nExpr; i++){
- sqlite3PrintExpr(pList->a[i].pExpr);
- if( i<pList->nExpr-1 ){
- sqlite3DebugPrintf(", ");
+static void explainOneSelect(Vdbe *pVdbe, Select *p){
+ sqlite3ExplainPrintf(pVdbe, "SELECT ");
+ if( p->selFlags & (SF_Distinct|SF_Aggregate) ){
+ if( p->selFlags & SF_Distinct ){
+ sqlite3ExplainPrintf(pVdbe, "DISTINCT ");
}
+ if( p->selFlags & SF_Aggregate ){
+ sqlite3ExplainPrintf(pVdbe, "agg_flag ");
+ }
+ sqlite3ExplainNL(pVdbe);
+ sqlite3ExplainPrintf(pVdbe, " ");
}
-}
-SQLITE_PRIVATE void sqlite3PrintSelect(Select *p, int indent){
- sqlite3DebugPrintf("%*sSELECT(%p) ", indent, "", p);
- sqlite3PrintExprList(p->pEList);
- sqlite3DebugPrintf("\n");
- if( p->pSrc ){
- char *zPrefix;
+ sqlite3ExplainExprList(pVdbe, p->pEList);
+ sqlite3ExplainNL(pVdbe);
+ if( p->pSrc && p->pSrc->nSrc ){
int i;
- zPrefix = "FROM";
+ sqlite3ExplainPrintf(pVdbe, "FROM ");
+ sqlite3ExplainPush(pVdbe);
for(i=0; i<p->pSrc->nSrc; i++){
struct SrcList_item *pItem = &p->pSrc->a[i];
- sqlite3DebugPrintf("%*s ", indent+6, zPrefix);
- zPrefix = "";
+ sqlite3ExplainPrintf(pVdbe, "{%d,*} = ", pItem->iCursor);
if( pItem->pSelect ){
- sqlite3DebugPrintf("(\n");
- sqlite3PrintSelect(pItem->pSelect, indent+10);
- sqlite3DebugPrintf("%*s)", indent+8, "");
+ sqlite3ExplainSelect(pVdbe, pItem->pSelect);
+ if( pItem->pTab ){
+ sqlite3ExplainPrintf(pVdbe, " (tabname=%s)", pItem->pTab->zName);
+ }
}else if( pItem->zName ){
- sqlite3DebugPrintf("%s", pItem->zName);
- }
- if( pItem->pTab ){
- sqlite3DebugPrintf("(table: %s)", pItem->pTab->zName);
+ sqlite3ExplainPrintf(pVdbe, "%s", pItem->zName);
}
if( pItem->zAlias ){
- sqlite3DebugPrintf(" AS %s", pItem->zAlias);
+ sqlite3ExplainPrintf(pVdbe, " (AS %s)", pItem->zAlias);
}
- if( i<p->pSrc->nSrc-1 ){
- sqlite3DebugPrintf(",");
+ if( pItem->jointype & JT_LEFT ){
+ sqlite3ExplainPrintf(pVdbe, " LEFT-JOIN");
}
- sqlite3DebugPrintf("\n");
+ sqlite3ExplainNL(pVdbe);
}
+ sqlite3ExplainPop(pVdbe);
}
if( p->pWhere ){
- sqlite3DebugPrintf("%*s WHERE ", indent, "");
- sqlite3PrintExpr(p->pWhere);
- sqlite3DebugPrintf("\n");
+ sqlite3ExplainPrintf(pVdbe, "WHERE ");
+ sqlite3ExplainExpr(pVdbe, p->pWhere);
+ sqlite3ExplainNL(pVdbe);
}
if( p->pGroupBy ){
- sqlite3DebugPrintf("%*s GROUP BY ", indent, "");
- sqlite3PrintExprList(p->pGroupBy);
- sqlite3DebugPrintf("\n");
+ sqlite3ExplainPrintf(pVdbe, "GROUPBY ");
+ sqlite3ExplainExprList(pVdbe, p->pGroupBy);
+ sqlite3ExplainNL(pVdbe);
}
if( p->pHaving ){
- sqlite3DebugPrintf("%*s HAVING ", indent, "");
- sqlite3PrintExpr(p->pHaving);
- sqlite3DebugPrintf("\n");
+ sqlite3ExplainPrintf(pVdbe, "HAVING ");
+ sqlite3ExplainExpr(pVdbe, p->pHaving);
+ sqlite3ExplainNL(pVdbe);
}
if( p->pOrderBy ){
- sqlite3DebugPrintf("%*s ORDER BY ", indent, "");
- sqlite3PrintExprList(p->pOrderBy);
- sqlite3DebugPrintf("\n");
+ sqlite3ExplainPrintf(pVdbe, "ORDERBY ");
+ sqlite3ExplainExprList(pVdbe, p->pOrderBy);
+ sqlite3ExplainNL(pVdbe);
+ }
+ if( p->pLimit ){
+ sqlite3ExplainPrintf(pVdbe, "LIMIT ");
+ sqlite3ExplainExpr(pVdbe, p->pLimit);
+ sqlite3ExplainNL(pVdbe);
+ }
+ if( p->pOffset ){
+ sqlite3ExplainPrintf(pVdbe, "OFFSET ");
+ sqlite3ExplainExpr(pVdbe, p->pOffset);
+ sqlite3ExplainNL(pVdbe);
}
}
+SQLITE_PRIVATE void sqlite3ExplainSelect(Vdbe *pVdbe, Select *p){
+ if( p==0 ){
+ sqlite3ExplainPrintf(pVdbe, "(null-select)");
+ return;
+ }
+ while( p->pPrior ) p = p->pPrior;
+ sqlite3ExplainPush(pVdbe);
+ while( p ){
+ explainOneSelect(pVdbe, p);
+ p = p->pNext;
+ if( p==0 ) break;
+ sqlite3ExplainNL(pVdbe);
+ sqlite3ExplainPrintf(pVdbe, "%s\n", selectOpName(p->op));
+ }
+ sqlite3ExplainPrintf(pVdbe, "END");
+ sqlite3ExplainPop(pVdbe);
+}
+
/* End of the structure debug printing code
*****************************************************************************/
#endif /* defined(SQLITE_TEST) || defined(SQLITE_DEBUG) */
@@ -92287,6 +98950,8 @@
** These routines are in a separate files so that they will not be linked
** if they are not used.
*/
+/* #include <stdlib.h> */
+/* #include <string.h> */
#ifndef SQLITE_OMIT_GET_TABLE
@@ -92521,6 +99186,7 @@
if( pTmpSchema!=pTab->pSchema ){
HashElem *p;
+ assert( sqlite3SchemaMutexHeld(pParse->db, 0, pTmpSchema) );
for(p=sqliteHashFirst(&pTmpSchema->trigHash); p; p=sqliteHashNext(p)){
Trigger *pTrig = (Trigger *)sqliteHashData(p);
if( pTrig->pTabSchema==pTab->pSchema
@@ -92583,15 +99249,28 @@
goto trigger_cleanup;
}
}
+ if( !pTableName || db->mallocFailed ){
+ goto trigger_cleanup;
+ }
+
+ /* A long-standing parser bug is that this syntax was allowed:
+ **
+ ** CREATE TRIGGER attached.demo AFTER INSERT ON attached.tab ....
+ ** ^^^^^^^^
+ **
+ ** To maintain backwards compatibility, ignore the database
+ ** name on pTableName if we are reparsing our of SQLITE_MASTER.
+ */
+ if( db->init.busy && iDb!=1 ){
+ sqlite3DbFree(db, pTableName->a[0].zDatabase);
+ pTableName->a[0].zDatabase = 0;
+ }
/* If the trigger name was unqualified, and the table is a temp table,
** then set iDb to 1 to create the trigger in the temporary database.
** If sqlite3SrcListLookup() returns 0, indicating the table does not
** exist, the error is caught by the block below.
*/
- if( !pTableName || db->mallocFailed ){
- goto trigger_cleanup;
- }
pTab = sqlite3SrcListLookup(pParse, pTableName);
if( db->init.busy==0 && pName2->n==0 && pTab
&& pTab->pSchema==db->aDb[1].pSchema ){
@@ -92632,10 +99311,14 @@
if( !zName || SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){
goto trigger_cleanup;
}
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
if( sqlite3HashFind(&(db->aDb[iDb].pSchema->trigHash),
zName, sqlite3Strlen30(zName)) ){
if( !noErr ){
sqlite3ErrorMsg(pParse, "trigger %T already exists", pName);
+ }else{
+ assert( !db->init.busy );
+ sqlite3CodeVerifySchema(pParse, iDb);
}
goto trigger_cleanup;
}
@@ -92729,7 +99412,6 @@
int iDb; /* Database containing the trigger */
Token nameToken; /* Trigger name for error reporting */
- pTrig = pParse->pNewTrigger;
pParse->pNewTrigger = 0;
if( NEVER(pParse->nErr) || !pTrig ) goto triggerfinish_cleanup;
zName = pTrig->zName;
@@ -92764,14 +99446,14 @@
pTrig->table, z);
sqlite3DbFree(db, z);
sqlite3ChangeCookie(pParse, iDb);
- sqlite3VdbeAddOp4(v, OP_ParseSchema, iDb, 0, 0, sqlite3MPrintf(
- db, "type='trigger' AND name='%q'", zName), P4_DYNAMIC
- );
+ sqlite3VdbeAddParseSchemaOp(v, iDb,
+ sqlite3MPrintf(db, "type='trigger' AND name='%q'", zName));
}
if( db->init.busy ){
Trigger *pLink = pTrig;
Hash *pHash = &db->aDb[iDb].pSchema->trigHash;
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
pTrig = sqlite3HashInsert(pHash, zName, sqlite3Strlen30(zName), pTrig);
if( pTrig ){
db->mallocFailed = 1;
@@ -92953,15 +99635,19 @@
zDb = pName->a[0].zDatabase;
zName = pName->a[0].zName;
nName = sqlite3Strlen30(zName);
+ assert( zDb!=0 || sqlite3BtreeHoldsAllMutexes(db) );
for(i=OMIT_TEMPDB; i<db->nDb; i++){
int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */
if( zDb && sqlite3StrICmp(db->aDb[j].zName, zDb) ) continue;
+ assert( sqlite3SchemaMutexHeld(db, j, 0) );
pTrigger = sqlite3HashFind(&(db->aDb[j].pSchema->trigHash), zName, nName);
if( pTrigger ) break;
}
if( !pTrigger ){
if( !noErr ){
sqlite3ErrorMsg(pParse, "no such trigger: %S", pName, 0);
+ }else{
+ sqlite3CodeVerifyNamedSchema(pParse, zDb);
}
pParse->checkSchema = 1;
goto drop_trigger_cleanup;
@@ -93029,7 +99715,7 @@
sqlite3BeginWriteOperation(pParse, 0, iDb);
sqlite3OpenMasterTable(pParse, iDb);
base = sqlite3VdbeAddOpList(v, ArraySize(dropTrigger), dropTrigger);
- sqlite3VdbeChangeP4(v, base+1, pTrigger->zName, 0);
+ sqlite3VdbeChangeP4(v, base+1, pTrigger->zName, P4_TRANSIENT);
sqlite3VdbeChangeP4(v, base+4, "trigger", P4_STATIC);
sqlite3ChangeCookie(pParse, iDb);
sqlite3VdbeAddOp2(v, OP_Close, 0, 0);
@@ -93044,8 +99730,11 @@
** Remove a trigger from the hash tables of the sqlite* pointer.
*/
SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTrigger(sqlite3 *db, int iDb, const char *zName){
- Hash *pHash = &(db->aDb[iDb].pSchema->trigHash);
Trigger *pTrigger;
+ Hash *pHash;
+
+ assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
+ pHash = &(db->aDb[iDb].pSchema->trigHash);
pTrigger = sqlite3HashInsert(pHash, zName, sqlite3Strlen30(zName), 0);
if( ALWAYS(pTrigger) ){
if( pTrigger->pSchema==pTrigger->pTabSchema ){
@@ -93091,8 +99780,12 @@
int *pMask /* OUT: Mask of TRIGGER_BEFORE|TRIGGER_AFTER */
){
int mask = 0;
- Trigger *pList = sqlite3TriggerList(pParse, pTab);
+ Trigger *pList = 0;
Trigger *p;
+
+ if( (pParse->db->flags & SQLITE_EnableTrigger)!=0 ){
+ pList = sqlite3TriggerList(pParse, pTab);
+ }
assert( pList==0 || IsVirtual(pTab)==0 );
for(p=pList; p; p=p->pNext){
if( p->op==op && checkColumnOverlap(p->pColumns, pChanges) ){
@@ -93343,6 +100036,7 @@
}
pProgram->nMem = pSubParse->nMem;
pProgram->nCsr = pSubParse->nTab;
+ pProgram->nOnce = pSubParse->nOnce;
pProgram->token = (void *)pTrigger;
pPrg->aColmask[0] = pSubParse->oldmask;
pPrg->aColmask[1] = pSubParse->newmask;
@@ -93587,7 +100281,8 @@
ExprList *pChanges, /* The columns to change in the UPDATE statement */
Expr *pRowidExpr, /* Expression used to recompute the rowid */
int *aXRef, /* Mapping from columns of pTab to entries in pChanges */
- Expr *pWhere /* WHERE clause of the UPDATE statement */
+ Expr *pWhere, /* WHERE clause of the UPDATE statement */
+ int onError /* ON CONFLICT strategy */
);
#endif /* SQLITE_OMIT_VIRTUALTABLE */
@@ -93689,10 +100384,9 @@
int regRowCount = 0; /* A count of rows changed */
int regOldRowid; /* The old rowid */
int regNewRowid; /* The new rowid */
- int regNew;
- int regOld = 0;
+ int regNew; /* Content of the NEW.* table in triggers */
+ int regOld = 0; /* Content of OLD.* table in triggers */
int regRowSet = 0; /* Rowset of rows to be updated */
- int regRec; /* Register used for new table record to insert */
memset(&sContext, 0, sizeof(sContext));
db = pParse->db;
@@ -93808,7 +100502,7 @@
}
for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
int reg;
- if( chngRowid ){
+ if( hasFK || chngRowid ){
reg = ++pParse->nMem;
}else{
reg = 0;
@@ -93832,7 +100526,7 @@
/* Virtual tables must be handled separately */
if( IsVirtual(pTab) ){
updateVirtualTable(pParse, pTabList, pTab, pChanges, pRowidExpr, aXRef,
- pWhere);
+ pWhere, onError);
pWhere = 0;
pTabList = 0;
goto update_cleanup;
@@ -93840,6 +100534,7 @@
#endif
/* Allocate required registers. */
+ regRowSet = ++pParse->nMem;
regOldRowid = regNewRowid = ++pParse->nMem;
if( pTrigger || hasFK ){
regOld = pParse->nMem + 1;
@@ -93850,7 +100545,6 @@
}
regNew = pParse->nMem + 1;
pParse->nMem += pTab->nCol;
- regRec = ++pParse->nMem;
/* Start the view context. */
if( isView ){
@@ -93875,8 +100569,10 @@
/* Begin the database scan
*/
- sqlite3VdbeAddOp2(v, OP_Null, 0, regOldRowid);
- pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere,0, WHERE_ONEPASS_DESIRED);
+ sqlite3VdbeAddOp3(v, OP_Null, 0, regRowSet, regOldRowid);
+ pWInfo = sqlite3WhereBegin(
+ pParse, pTabList, pWhere, 0, 0, WHERE_ONEPASS_DESIRED
+ );
if( pWInfo==0 ) goto update_cleanup;
okOnePass = pWInfo->okOnePass;
@@ -93884,7 +100580,6 @@
*/
sqlite3VdbeAddOp2(v, OP_Rowid, iCur, regOldRowid);
if( !okOnePass ){
- regRowSet = ++pParse->nMem;
sqlite3VdbeAddOp2(v, OP_RowSetAdd, regRowSet, regOldRowid);
}
@@ -93919,6 +100614,7 @@
}
}
for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
+ assert( aRegIdx );
if( openAll || aRegIdx[i]>0 ){
KeyInfo *pKey = sqlite3IndexKeyinfo(pParse, pIdx);
sqlite3VdbeAddOp4(v, OP_OpenWrite, iCur+i+1, pIdx->tnum, iDb,
@@ -93960,7 +100656,7 @@
pTrigger, pChanges, 0, TRIGGER_BEFORE|TRIGGER_AFTER, pTab, onError
);
for(i=0; i<pTab->nCol; i++){
- if( aXRef[i]<0 || oldmask==0xffffffff || (oldmask & (1<<i)) ){
+ if( aXRef[i]<0 || oldmask==0xffffffff || (i<32 && (oldmask & (1<<i))) ){
sqlite3ExprCodeGetColumnOfTable(v, pTab, iCur, i, regOld+i);
}else{
sqlite3VdbeAddOp2(v, OP_Null, 0, regOld+i);
@@ -93987,9 +100683,10 @@
newmask = sqlite3TriggerColmask(
pParse, pTrigger, pChanges, 1, TRIGGER_BEFORE, pTab, onError
);
+ sqlite3VdbeAddOp3(v, OP_Null, 0, regNew, regNew+pTab->nCol-1);
for(i=0; i<pTab->nCol; i++){
if( i==pTab->iPKey ){
- sqlite3VdbeAddOp2(v, OP_Null, 0, regNew+i);
+ /*sqlite3VdbeAddOp2(v, OP_Null, 0, regNew+i);*/
}else{
j = aXRef[i];
if( j>=0 ){
@@ -94092,6 +100789,7 @@
/* Close all tables */
for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
+ assert( aRegIdx );
if( openAll || aRegIdx[i]>0 ){
sqlite3VdbeAddOp2(v, OP_Close, iCur+i+1, 0);
}
@@ -94163,7 +100861,8 @@
ExprList *pChanges, /* The columns to change in the UPDATE statement */
Expr *pRowid, /* Expression used to recompute the rowid */
int *aXRef, /* Mapping from columns of pTab to entries in pChanges */
- Expr *pWhere /* WHERE clause of the UPDATE statement */
+ Expr *pWhere, /* WHERE clause of the UPDATE statement */
+ int onError /* ON CONFLICT strategy */
){
Vdbe *v = pParse->pVdbe; /* Virtual machine under construction */
ExprList *pEList = 0; /* The result set of the SELECT statement */
@@ -94220,6 +100919,7 @@
}
sqlite3VtabMakeWritable(pParse, pTab);
sqlite3VdbeAddOp4(v, OP_VUpdate, 0, pTab->nCol+2, iReg, pVTab, P4_VTAB);
+ sqlite3VdbeChangeP5(v, onError==OE_Default ? OE_Abort : onError);
sqlite3MayAbort(pParse);
sqlite3VdbeAddOp2(v, OP_Next, ephemTab, addr+1);
sqlite3VdbeJumpHere(v, addr);
@@ -94277,7 +100977,7 @@
return sqlite3_errcode(db);
}
VVA_ONLY( rc = ) sqlite3_step(pStmt);
- assert( rc!=SQLITE_ROW );
+ assert( rc!=SQLITE_ROW || (db->flags&SQLITE_CountRows) );
return vacuumFinalize(db, pStmt, pzErrMsg);
}
@@ -94495,13 +101195,11 @@
);
if( rc ) goto end_of_vacuum;
- /* At this point, unless the main db was completely empty, there is now a
- ** transaction open on the vacuum database, but not on the main database.
- ** Open a btree level transaction on the main database. This allows a
- ** call to sqlite3BtreeCopyFile(). The main database btree level
- ** transaction is then committed, so the SQL level never knows it was
- ** opened for writing. This way, the SQL transaction used to create the
- ** temporary database never needs to be committed.
+ /* At this point, there is a write transaction open on both the
+ ** vacuum database and the main database. Assuming no error occurs,
+ ** both transactions are closed by this block - the main database
+ ** transaction by sqlite3BtreeCopyFile() and the other by an explicit
+ ** call to sqlite3BtreeCommit().
*/
{
u32 meta;
@@ -94567,10 +101265,13 @@
pDb->pSchema = 0;
}
- sqlite3ResetInternalSchema(db, 0);
+ /* This both clears the schemas and reduces the size of the db->aDb[]
+ ** array. */
+ sqlite3ResetInternalSchema(db, -1);
return rc;
}
+
#endif /* SQLITE_OMIT_VACUUM && SQLITE_OMIT_ATTACH */
/************** End of vacuum.c **********************************************/
@@ -94591,6 +101292,18 @@
#ifndef SQLITE_OMIT_VIRTUALTABLE
/*
+** Before a virtual table xCreate() or xConnect() method is invoked, the
+** sqlite3.pVtabCtx member variable is set to point to an instance of
+** this struct allocated on the stack. It is used by the implementation of
+** the sqlite3_declare_vtab() and sqlite3_vtab_config() APIs, both of which
+** are invoked only from within xCreate and xConnect methods.
+*/
+struct VtabCtx {
+ Table *pTab;
+ VTable *pVTable;
+};
+
+/*
** The actual function that does the work of creating a new module.
** This function implements the sqlite3_create_module() and
** sqlite3_create_module_v2() interfaces.
@@ -94618,13 +101331,13 @@
pMod->xDestroy = xDestroy;
pDel = (Module *)sqlite3HashInsert(&db->aModule, zCopy, nName, (void*)pMod);
if( pDel && pDel->xDestroy ){
+ sqlite3ResetInternalSchema(db, -1);
pDel->xDestroy(pDel->pAux);
}
sqlite3DbFree(db, pDel);
if( pDel==pMod ){
db->mallocFailed = 1;
}
- sqlite3ResetInternalSchema(db, 0);
}else if( xDestroy ){
xDestroy(pAux);
}
@@ -94721,10 +101434,9 @@
** that contains table p is held by the caller. See header comments
** above function sqlite3VtabUnlockList() for an explanation of why
** this makes it safe to access the sqlite3.pDisconnect list of any
- ** database connection that may have an entry in the p->pVTable list. */
- assert( db==0 ||
- sqlite3BtreeHoldsMutex(db->aDb[sqlite3SchemaToIndex(db, p->pSchema)].pBt)
- );
+ ** database connection that may have an entry in the p->pVTable list.
+ */
+ assert( db==0 || sqlite3SchemaMutexHeld(db, 0, p->pSchema) );
while( pVTable ){
sqlite3 *db2 = pVTable->db;
@@ -94948,7 +101660,7 @@
sqlite3VdbeAddOp2(v, OP_Expire, 0, 0);
zWhere = sqlite3MPrintf(db, "name='%q' AND type='table'", pTab->zName);
- sqlite3VdbeAddOp4(v, OP_ParseSchema, iDb, 1, 0, zWhere, P4_DYNAMIC);
+ sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere);
sqlite3VdbeAddOp4(v, OP_VCreate, iDb, 0, 0,
pTab->zName, sqlite3Strlen30(pTab->zName) + 1);
}
@@ -94963,6 +101675,7 @@
Schema *pSchema = pTab->pSchema;
const char *zName = pTab->zName;
int nName = sqlite3Strlen30(zName);
+ assert( sqlite3SchemaMutexHeld(db, 0, pSchema) );
pOld = sqlite3HashInsert(&pSchema->tblHash, zName, nName, pTab);
if( pOld ){
db->mallocFailed = 1;
@@ -95010,6 +101723,7 @@
int (*xConstruct)(sqlite3*,void*,int,const char*const*,sqlite3_vtab**,char**),
char **pzErr
){
+ VtabCtx sCtx;
VTable *pVTable;
int rc;
const char *const*azArg = (const char *const*)pTab->azModuleArg;
@@ -95029,12 +101743,14 @@
pVTable->db = db;
pVTable->pMod = pMod;
- assert( !db->pVTab );
- assert( xConstruct );
- db->pVTab = pTab;
-
/* Invoke the virtual table constructor */
+ assert( &db->pVtabCtx );
+ assert( xConstruct );
+ sCtx.pTab = pTab;
+ sCtx.pVTable = pVTable;
+ db->pVtabCtx = &sCtx;
rc = xConstruct(db, pMod->pAux, nArg, azArg, &pVTable->pVtab, &zErr);
+ db->pVtabCtx = 0;
if( rc==SQLITE_NOMEM ) db->mallocFailed = 1;
if( SQLITE_OK!=rc ){
@@ -95050,7 +101766,7 @@
** the sqlite3_vtab object if successful. */
pVTable->pVtab->pModule = pMod->pModule;
pVTable->nRef = 1;
- if( db->pVTab ){
+ if( sCtx.pTab ){
const char *zFormat = "vtable constructor did not declare schema: %s";
*pzErr = sqlite3MPrintf(db, zFormat, pTab->zName);
sqlite3VtabUnlock(pVTable);
@@ -95098,7 +101814,6 @@
}
sqlite3DbFree(db, zModuleName);
- db->pVTab = 0;
return rc;
}
@@ -95139,11 +101854,11 @@
return rc;
}
-
/*
-** Add the virtual table pVTab to the array sqlite3.aVTrans[].
+** Grow the db->aVTrans[] array so that there is room for at least one
+** more v-table. Return SQLITE_NOMEM if a malloc fails, or SQLITE_OK otherwise.
*/
-static int addToVTrans(sqlite3 *db, VTable *pVTab){
+static int growVTrans(sqlite3 *db){
const int ARRAY_INCR = 5;
/* Grow the sqlite3.aVTrans array if required */
@@ -95158,10 +101873,17 @@
db->aVTrans = aVTrans;
}
+ return SQLITE_OK;
+}
+
+/*
+** Add the virtual table pVTab to the array sqlite3.aVTrans[]. Space should
+** have already been reserved using growVTrans().
+*/
+static void addToVTrans(sqlite3 *db, VTable *pVTab){
/* Add pVtab to the end of sqlite3.aVTrans */
db->aVTrans[db->nVTrans++] = pVTab;
sqlite3VtabLock(pVTab);
- return SQLITE_OK;
}
/*
@@ -95199,7 +101921,10 @@
/* Justification of ALWAYS(): The xConstructor method is required to
** create a valid sqlite3_vtab if it returns SQLITE_OK. */
if( rc==SQLITE_OK && ALWAYS(sqlite3GetVTable(db, pTab)) ){
- rc = addToVTrans(db, sqlite3GetVTable(db, pTab));
+ rc = growVTrans(db);
+ if( rc==SQLITE_OK ){
+ addToVTrans(db, sqlite3GetVTable(db, pTab));
+ }
}
return rc;
@@ -95218,8 +101943,7 @@
char *zErr = 0;
sqlite3_mutex_enter(db->mutex);
- pTab = db->pVTab;
- if( !pTab ){
+ if( !db->pVtabCtx || !(pTab = db->pVtabCtx->pTab) ){
sqlite3Error(db, SQLITE_MISUSE, 0);
sqlite3_mutex_leave(db->mutex);
return SQLITE_MISUSE_BKPT;
@@ -95246,7 +101970,7 @@
pParse->pNewTable->nCol = 0;
pParse->pNewTable->aCol = 0;
}
- db->pVTab = 0;
+ db->pVtabCtx->pTab = 0;
}else{
sqlite3Error(db, SQLITE_ERROR, (zErr ? "%s" : 0), zErr);
sqlite3DbFree(db, zErr);
@@ -95316,6 +102040,7 @@
x = *(int (**)(sqlite3_vtab *))((char *)p->pModule + offset);
if( x ) x(p);
}
+ pVTab->iSavepoint = 0;
sqlite3VtabUnlock(pVTab);
}
sqlite3DbFree(db, db->aVTrans);
@@ -95398,7 +102123,6 @@
if( pModule->xBegin ){
int i;
-
/* If pVtab is already in the aVTrans array, return early */
for(i=0; i<db->nVTrans; i++){
if( db->aVTrans[i]==pVTab ){
@@ -95406,10 +102130,62 @@
}
}
- /* Invoke the xBegin method */
- rc = pModule->xBegin(pVTab->pVtab);
+ /* Invoke the xBegin method. If successful, add the vtab to the
+ ** sqlite3.aVTrans[] array. */
+ rc = growVTrans(db);
if( rc==SQLITE_OK ){
- rc = addToVTrans(db, pVTab);
+ rc = pModule->xBegin(pVTab->pVtab);
+ if( rc==SQLITE_OK ){
+ addToVTrans(db, pVTab);
+ }
+ }
+ }
+ return rc;
+}
+
+/*
+** Invoke either the xSavepoint, xRollbackTo or xRelease method of all
+** virtual tables that currently have an open transaction. Pass iSavepoint
+** as the second argument to the virtual table method invoked.
+**
+** If op is SAVEPOINT_BEGIN, the xSavepoint method is invoked. If it is
+** SAVEPOINT_ROLLBACK, the xRollbackTo method. Otherwise, if op is
+** SAVEPOINT_RELEASE, then the xRelease method of each virtual table with
+** an open transaction is invoked.
+**
+** If any virtual table method returns an error code other than SQLITE_OK,
+** processing is abandoned and the error returned to the caller of this
+** function immediately. If all calls to virtual table methods are successful,
+** SQLITE_OK is returned.
+*/
+SQLITE_PRIVATE int sqlite3VtabSavepoint(sqlite3 *db, int op, int iSavepoint){
+ int rc = SQLITE_OK;
+
+ assert( op==SAVEPOINT_RELEASE||op==SAVEPOINT_ROLLBACK||op==SAVEPOINT_BEGIN );
+ assert( iSavepoint>=0 );
+ if( db->aVTrans ){
+ int i;
+ for(i=0; rc==SQLITE_OK && i<db->nVTrans; i++){
+ VTable *pVTab = db->aVTrans[i];
+ const sqlite3_module *pMod = pVTab->pMod->pModule;
+ if( pVTab->pVtab && pMod->iVersion>=2 ){
+ int (*xMethod)(sqlite3_vtab *, int);
+ switch( op ){
+ case SAVEPOINT_BEGIN:
+ xMethod = pMod->xSavepoint;
+ pVTab->iSavepoint = iSavepoint+1;
+ break;
+ case SAVEPOINT_ROLLBACK:
+ xMethod = pMod->xRollbackTo;
+ break;
+ default:
+ xMethod = pMod->xRelease;
+ break;
+ }
+ if( xMethod && pVTab->iSavepoint>iSavepoint ){
+ rc = xMethod(pVTab->pVtab, iSavepoint);
+ }
+ }
}
}
return rc;
@@ -95513,6 +102289,57 @@
}
}
+/*
+** Return the ON CONFLICT resolution mode in effect for the virtual
+** table update operation currently in progress.
+**
+** The results of this routine are undefined unless it is called from
+** within an xUpdate method.
+*/
+SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *db){
+ static const unsigned char aMap[] = {
+ SQLITE_ROLLBACK, SQLITE_ABORT, SQLITE_FAIL, SQLITE_IGNORE, SQLITE_REPLACE
+ };
+ assert( OE_Rollback==1 && OE_Abort==2 && OE_Fail==3 );
+ assert( OE_Ignore==4 && OE_Replace==5 );
+ assert( db->vtabOnConflict>=1 && db->vtabOnConflict<=5 );
+ return (int)aMap[db->vtabOnConflict-1];
+}
+
+/*
+** Call from within the xCreate() or xConnect() methods to provide
+** the SQLite core with additional information about the behavior
+** of the virtual table being implemented.
+*/
+SQLITE_API int sqlite3_vtab_config(sqlite3 *db, int op, ...){
+ va_list ap;
+ int rc = SQLITE_OK;
+
+ sqlite3_mutex_enter(db->mutex);
+
+ va_start(ap, op);
+ switch( op ){
+ case SQLITE_VTAB_CONSTRAINT_SUPPORT: {
+ VtabCtx *p = db->pVtabCtx;
+ if( !p ){
+ rc = SQLITE_MISUSE_BKPT;
+ }else{
+ assert( p->pTab==0 || (p->pTab->tabFlags & TF_Virtual)!=0 );
+ p->pVTable->bConstraint = (u8)va_arg(ap, int);
+ }
+ break;
+ }
+ default:
+ rc = SQLITE_MISUSE_BKPT;
+ break;
+ }
+ va_end(ap);
+
+ if( rc!=SQLITE_OK ) sqlite3Error(db, rc, 0);
+ sqlite3_mutex_leave(db->mutex);
+ return rc;
+}
+
#endif /* SQLITE_OMIT_VIRTUALTABLE */
/************** End of vtab.c ************************************************/
@@ -95536,6 +102363,7 @@
** indices, you might also think of this module as the "query optimizer".
*/
+
/*
** Trace output macros
*/
@@ -95635,16 +102463,31 @@
#define TERM_ORINFO 0x10 /* Need to free the WhereTerm.u.pOrInfo object */
#define TERM_ANDINFO 0x20 /* Need to free the WhereTerm.u.pAndInfo obj */
#define TERM_OR_OK 0x40 /* Used during OR-clause processing */
+#ifdef SQLITE_ENABLE_STAT3
+# define TERM_VNULL 0x80 /* Manufactured x>NULL or x<=NULL term */
+#else
+# define TERM_VNULL 0x00 /* Disabled if not using stat3 */
+#endif
/*
** An instance of the following structure holds all information about a
** WHERE clause. Mostly this is a container for one or more WhereTerms.
+**
+** Explanation of pOuter: For a WHERE clause of the form
+**
+** a AND ((b AND c) OR (d AND e)) AND f
+**
+** There are separate WhereClause objects for the whole clause and for
+** the subclauses "(b AND c)" and "(d AND e)". The pOuter field of the
+** subclauses points to the WhereClause object for the whole clause.
*/
struct WhereClause {
Parse *pParse; /* The parser context */
WhereMaskSet *pMaskSet; /* Mapping of table cursor numbers to bitmasks */
Bitmask vmask; /* Bitmask identifying virtual table cursors */
+ WhereClause *pOuter; /* Outer conjunction */
u8 op; /* Split operator. TK_AND or TK_OR */
+ u16 wctrlFlags; /* Might include WHERE_AND_ONLY */
int nTerm; /* Number of terms */
int nSlot; /* Number of entries in a[] */
WhereTerm *a; /* Each a[] describes a term of the WHERE cluase */
@@ -95728,6 +102571,7 @@
#define WO_ISNULL 0x080
#define WO_OR 0x100 /* Two or more OR-connected terms */
#define WO_AND 0x200 /* Two or more AND-connected terms */
+#define WO_NOOP 0x800 /* This term does not restrict search space */
#define WO_ALL 0xfff /* Mask of all possible WO_* values */
#define WO_SINGLE 0x0ff /* Mask of all non-compound WO_* values */
@@ -95764,6 +102608,7 @@
#define WHERE_VIRTUALTABLE 0x08000000 /* Use virtual-table processing */
#define WHERE_MULTI_OR 0x10000000 /* OR using multiple indices */
#define WHERE_TEMP_INDEX 0x20000000 /* Uses an ephemeral index */
+#define WHERE_DISTINCT 0x40000000 /* Correct order for DISTINCT */
/*
** Initialize a preallocated WhereClause structure.
@@ -95771,14 +102616,17 @@
static void whereClauseInit(
WhereClause *pWC, /* The WhereClause to be initialized */
Parse *pParse, /* The parsing context */
- WhereMaskSet *pMaskSet /* Mapping from table cursor numbers to bitmasks */
+ WhereMaskSet *pMaskSet, /* Mapping from table cursor numbers to bitmasks */
+ u16 wctrlFlags /* Might include WHERE_AND_ONLY */
){
pWC->pParse = pParse;
pWC->pMaskSet = pMaskSet;
+ pWC->pOuter = 0;
pWC->nTerm = 0;
pWC->nSlot = ArraySize(pWC->aStatic);
pWC->a = pWC->aStatic;
pWC->vmask = 0;
+ pWC->wctrlFlags = wctrlFlags;
}
/* Forward reference */
@@ -95910,7 +102758,7 @@
*/
static Bitmask getMask(WhereMaskSet *pMaskSet, int iCursor){
int i;
- assert( pMaskSet->n<=sizeof(Bitmask)*8 );
+ assert( pMaskSet->n<=(int)sizeof(Bitmask)*8 );
for(i=0; i<pMaskSet->n; i++){
if( pMaskSet->ix[i]==iCursor ){
return ((Bitmask)1)<<i;
@@ -95977,11 +102825,19 @@
static Bitmask exprSelectTableUsage(WhereMaskSet *pMaskSet, Select *pS){
Bitmask mask = 0;
while( pS ){
+ SrcList *pSrc = pS->pSrc;
mask |= exprListTableUsage(pMaskSet, pS->pEList);
mask |= exprListTableUsage(pMaskSet, pS->pGroupBy);
mask |= exprListTableUsage(pMaskSet, pS->pOrderBy);
mask |= exprTableUsage(pMaskSet, pS->pWhere);
mask |= exprTableUsage(pMaskSet, pS->pHaving);
+ if( ALWAYS(pSrc!=0) ){
+ int i;
+ for(i=0; i<pSrc->nSrc; i++){
+ mask |= exprSelectTableUsage(pMaskSet, pSrc->a[i].pSelect);
+ mask |= exprTableUsage(pMaskSet, pSrc->a[i].pOn);
+ }
+ }
pS = pS->pPrior;
}
return mask;
@@ -96086,36 +102942,38 @@
int k;
assert( iCur>=0 );
op &= WO_ALL;
- for(pTerm=pWC->a, k=pWC->nTerm; k; k--, pTerm++){
- if( pTerm->leftCursor==iCur
- && (pTerm->prereqRight & notReady)==0
- && pTerm->u.leftColumn==iColumn
- && (pTerm->eOperator & op)!=0
- ){
- if( pIdx && pTerm->eOperator!=WO_ISNULL ){
- Expr *pX = pTerm->pExpr;
- CollSeq *pColl;
- char idxaff;
- int j;
- Parse *pParse = pWC->pParse;
-
- idxaff = pIdx->pTable->aCol[iColumn].affinity;
- if( !sqlite3IndexAffinityOk(pX, idxaff) ) continue;
-
- /* Figure out the collation sequence required from an index for
- ** it to be useful for optimising expression pX. Store this
- ** value in variable pColl.
- */
- assert(pX->pLeft);
- pColl = sqlite3BinaryCompareCollSeq(pParse, pX->pLeft, pX->pRight);
- assert(pColl || pParse->nErr);
-
- for(j=0; pIdx->aiColumn[j]!=iColumn; j++){
- if( NEVER(j>=pIdx->nColumn) ) return 0;
+ for(; pWC; pWC=pWC->pOuter){
+ for(pTerm=pWC->a, k=pWC->nTerm; k; k--, pTerm++){
+ if( pTerm->leftCursor==iCur
+ && (pTerm->prereqRight & notReady)==0
+ && pTerm->u.leftColumn==iColumn
+ && (pTerm->eOperator & op)!=0
+ ){
+ if( iColumn>=0 && pIdx && pTerm->eOperator!=WO_ISNULL ){
+ Expr *pX = pTerm->pExpr;
+ CollSeq *pColl;
+ char idxaff;
+ int j;
+ Parse *pParse = pWC->pParse;
+
+ idxaff = pIdx->pTable->aCol[iColumn].affinity;
+ if( !sqlite3IndexAffinityOk(pX, idxaff) ) continue;
+
+ /* Figure out the collation sequence required from an index for
+ ** it to be useful for optimising expression pX. Store this
+ ** value in variable pColl.
+ */
+ assert(pX->pLeft);
+ pColl = sqlite3BinaryCompareCollSeq(pParse, pX->pLeft, pX->pRight);
+ assert(pColl || pParse->nErr);
+
+ for(j=0; pIdx->aiColumn[j]!=iColumn; j++){
+ if( NEVER(j>=pIdx->nColumn) ) return 0;
+ }
+ if( pColl && sqlite3StrICmp(pColl->zName, pIdx->azColl[j]) ) continue;
}
- if( pColl && sqlite3StrICmp(pColl->zName, pIdx->azColl[j]) ) continue;
+ return pTerm;
}
- return pTerm;
}
}
return 0;
@@ -96192,7 +103050,7 @@
if( pVal && sqlite3_value_type(pVal)==SQLITE_TEXT ){
z = (char *)sqlite3_value_text(pVal);
}
- sqlite3VdbeSetVarmask(pParse->pVdbe, iCol); /* IMP: R-23257-02778 */
+ sqlite3VdbeSetVarmask(pParse->pVdbe, iCol);
assert( pRight->op==TK_VARIABLE || pRight->op==TK_REGISTER );
}else if( op==TK_STRING ){
z = pRight->u.zToken;
@@ -96210,7 +103068,7 @@
*ppPrefix = pPrefix;
if( op==TK_VARIABLE ){
Vdbe *v = pParse->pVdbe;
- sqlite3VdbeSetVarmask(v, pRight->iColumn); /* IMP: R-23257-02778 */
+ sqlite3VdbeSetVarmask(v, pRight->iColumn);
if( *pisComplete && pRight->u.zToken[1] ){
/* If the rhs of the LIKE expression is a variable, and the current
** value of the variable means there is no need to invoke the LIKE
@@ -96379,7 +103237,7 @@
if( pOrInfo==0 ) return;
pTerm->wtFlags |= TERM_ORINFO;
pOrWc = &pOrInfo->wc;
- whereClauseInit(pOrWc, pWC->pParse, pMaskSet);
+ whereClauseInit(pOrWc, pWC->pParse, pMaskSet, pWC->wctrlFlags);
whereSplit(pOrWc, pExpr, TK_OR);
exprAnalyzeAll(pSrc, pOrWc);
if( db->mallocFailed ) return;
@@ -96406,9 +103264,10 @@
pOrTerm->wtFlags |= TERM_ANDINFO;
pOrTerm->eOperator = WO_AND;
pAndWC = &pAndInfo->wc;
- whereClauseInit(pAndWC, pWC->pParse, pMaskSet);
+ whereClauseInit(pAndWC, pWC->pParse, pMaskSet, pWC->wctrlFlags);
whereSplit(pAndWC, pOrTerm->pExpr, TK_AND);
exprAnalyzeAll(pSrc, pAndWC);
+ pAndWC->pOuter = pWC;
testcase( db->mallocFailed );
if( !db->mallocFailed ){
for(j=0, pAndTerm=pAndWC->a; j<pAndWC->nTerm; j++, pAndTerm++){
@@ -96578,7 +103437,7 @@
}else{
sqlite3ExprListDelete(db, pList);
}
- pTerm->eOperator = 0; /* case 1 trumps case 2 */
+ pTerm->eOperator = WO_NOOP; /* case 1 trumps case 2 */
}
}
}
@@ -96842,6 +103701,47 @@
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */
+#ifdef SQLITE_ENABLE_STAT3
+ /* When sqlite_stat3 histogram data is available an operator of the
+ ** form "x IS NOT NULL" can sometimes be evaluated more efficiently
+ ** as "x>NULL" if x is not an INTEGER PRIMARY KEY. So construct a
+ ** virtual term of that form.
+ **
+ ** Note that the virtual term must be tagged with TERM_VNULL. This
+ ** TERM_VNULL tag will suppress the not-null check at the beginning
+ ** of the loop. Without the TERM_VNULL flag, the not-null check at
+ ** the start of the loop will prevent any results from being returned.
+ */
+ if( pExpr->op==TK_NOTNULL
+ && pExpr->pLeft->op==TK_COLUMN
+ && pExpr->pLeft->iColumn>=0
+ ){
+ Expr *pNewExpr;
+ Expr *pLeft = pExpr->pLeft;
+ int idxNew;
+ WhereTerm *pNewTerm;
+
+ pNewExpr = sqlite3PExpr(pParse, TK_GT,
+ sqlite3ExprDup(db, pLeft, 0),
+ sqlite3PExpr(pParse, TK_NULL, 0, 0, 0), 0);
+
+ idxNew = whereClauseInsert(pWC, pNewExpr,
+ TERM_VIRTUAL|TERM_DYNAMIC|TERM_VNULL);
+ if( idxNew ){
+ pNewTerm = &pWC->a[idxNew];
+ pNewTerm->prereqRight = 0;
+ pNewTerm->leftCursor = pLeft->iTable;
+ pNewTerm->u.leftColumn = pLeft->iColumn;
+ pNewTerm->eOperator = WO_GT;
+ pNewTerm->iParent = idxTerm;
+ pTerm = &pWC->a[idxTerm];
+ pTerm->nChild = 1;
+ pTerm->wtFlags |= TERM_COPIED;
+ pNewTerm->prereqAll = pTerm->prereqAll;
+ }
+ }
+#endif /* SQLITE_ENABLE_STAT */
+
/* Prevent ON clause terms of a LEFT JOIN from being used to drive
** an index for tables to the left of the join.
*/
@@ -96867,6 +103767,162 @@
return 0;
}
+/*
+** This function searches the expression list passed as the second argument
+** for an expression of type TK_COLUMN that refers to the same column and
+** uses the same collation sequence as the iCol'th column of index pIdx.
+** Argument iBase is the cursor number used for the table that pIdx refers
+** to.
+**
+** If such an expression is found, its index in pList->a[] is returned. If
+** no expression is found, -1 is returned.
+*/
+static int findIndexCol(
+ Parse *pParse, /* Parse context */
+ ExprList *pList, /* Expression list to search */
+ int iBase, /* Cursor for table associated with pIdx */
+ Index *pIdx, /* Index to match column of */
+ int iCol /* Column of index to match */
+){
+ int i;
+ const char *zColl = pIdx->azColl[iCol];
+
+ for(i=0; i<pList->nExpr; i++){
+ Expr *p = pList->a[i].pExpr;
+ if( p->op==TK_COLUMN
+ && p->iColumn==pIdx->aiColumn[iCol]
+ && p->iTable==iBase
+ ){
+ CollSeq *pColl = sqlite3ExprCollSeq(pParse, p);
+ if( ALWAYS(pColl) && 0==sqlite3StrICmp(pColl->zName, zColl) ){
+ return i;
+ }
+ }
+ }
+
+ return -1;
+}
+
+/*
+** This routine determines if pIdx can be used to assist in processing a
+** DISTINCT qualifier. In other words, it tests whether or not using this
+** index for the outer loop guarantees that rows with equal values for
+** all expressions in the pDistinct list are delivered grouped together.
+**
+** For example, the query
+**
+** SELECT DISTINCT a, b, c FROM tbl WHERE a = ?
+**
+** can benefit from any index on columns "b" and "c".
+*/
+static int isDistinctIndex(
+ Parse *pParse, /* Parsing context */
+ WhereClause *pWC, /* The WHERE clause */
+ Index *pIdx, /* The index being considered */
+ int base, /* Cursor number for the table pIdx is on */
+ ExprList *pDistinct, /* The DISTINCT expressions */
+ int nEqCol /* Number of index columns with == */
+){
+ Bitmask mask = 0; /* Mask of unaccounted for pDistinct exprs */
+ int i; /* Iterator variable */
+
+ if( pIdx->zName==0 || pDistinct==0 || pDistinct->nExpr>=BMS ) return 0;
+ testcase( pDistinct->nExpr==BMS-1 );
+
+ /* Loop through all the expressions in the distinct list. If any of them
+ ** are not simple column references, return early. Otherwise, test if the
+ ** WHERE clause contains a "col=X" clause. If it does, the expression
+ ** can be ignored. If it does not, and the column does not belong to the
+ ** same table as index pIdx, return early. Finally, if there is no
+ ** matching "col=X" expression and the column is on the same table as pIdx,
+ ** set the corresponding bit in variable mask.
+ */
+ for(i=0; i<pDistinct->nExpr; i++){
+ WhereTerm *pTerm;
+ Expr *p = pDistinct->a[i].pExpr;
+ if( p->op!=TK_COLUMN ) return 0;
+ pTerm = findTerm(pWC, p->iTable, p->iColumn, ~(Bitmask)0, WO_EQ, 0);
+ if( pTerm ){
+ Expr *pX = pTerm->pExpr;
+ CollSeq *p1 = sqlite3BinaryCompareCollSeq(pParse, pX->pLeft, pX->pRight);
+ CollSeq *p2 = sqlite3ExprCollSeq(pParse, p);
+ if( p1==p2 ) continue;
+ }
+ if( p->iTable!=base ) return 0;
+ mask |= (((Bitmask)1) << i);
+ }
+
+ for(i=nEqCol; mask && i<pIdx->nColumn; i++){
+ int iExpr = findIndexCol(pParse, pDistinct, base, pIdx, i);
+ if( iExpr<0 ) break;
+ mask &= ~(((Bitmask)1) << iExpr);
+ }
+
+ return (mask==0);
+}
+
+
+/*
+** Return true if the DISTINCT expression-list passed as the third argument
+** is redundant. A DISTINCT list is redundant if the database contains a
+** UNIQUE index that guarantees that the result of the query will be distinct
+** anyway.
+*/
+static int isDistinctRedundant(
+ Parse *pParse,
+ SrcList *pTabList,
+ WhereClause *pWC,
+ ExprList *pDistinct
+){
+ Table *pTab;
+ Index *pIdx;
+ int i;
+ int iBase;
+
+ /* If there is more than one table or sub-select in the FROM clause of
+ ** this query, then it will not be possible to show that the DISTINCT
+ ** clause is redundant. */
+ if( pTabList->nSrc!=1 ) return 0;
+ iBase = pTabList->a[0].iCursor;
+ pTab = pTabList->a[0].pTab;
+
+ /* If any of the expressions is an IPK column on table iBase, then return
+ ** true. Note: The (p->iTable==iBase) part of this test may be false if the
+ ** current SELECT is a correlated sub-query.
+ */
+ for(i=0; i<pDistinct->nExpr; i++){
+ Expr *p = pDistinct->a[i].pExpr;
+ if( p->op==TK_COLUMN && p->iTable==iBase && p->iColumn<0 ) return 1;
+ }
+
+ /* Loop through all indices on the table, checking each to see if it makes
+ ** the DISTINCT qualifier redundant. It does so if:
+ **
+ ** 1. The index is itself UNIQUE, and
+ **
+ ** 2. All of the columns in the index are either part of the pDistinct
+ ** list, or else the WHERE clause contains a term of the form "col=X",
+ ** where X is a constant value. The collation sequences of the
+ ** comparison and select-list expressions must match those of the index.
+ */
+ for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
+ if( pIdx->onError==OE_None ) continue;
+ for(i=0; i<pIdx->nColumn; i++){
+ int iCol = pIdx->aiColumn[i];
+ if( 0==findTerm(pWC, iBase, iCol, ~(Bitmask)0, WO_EQ, pIdx)
+ && 0>findIndexCol(pParse, pDistinct, iBase, pIdx, i)
+ ){
+ break;
+ }
+ }
+ if( i==pIdx->nColumn ){
+ /* This index implies that the DISTINCT qualifier is redundant. */
+ return 1;
+ }
+ }
+
+ return 0;
+}
/*
** This routine decides if pIdx can be used to satisfy the ORDER BY
@@ -96894,6 +103950,7 @@
int base, /* Cursor number for the table to be sorted */
ExprList *pOrderBy, /* The ORDER BY clause */
int nEqCol, /* Number of index columns with == constraints */
+ int wsFlags, /* Index usages flags */
int *pbRev /* Set to 1 if ORDER BY is DESC */
){
int i, j; /* Loop counters */
@@ -96902,7 +103959,10 @@
struct ExprList_item *pTerm; /* A term of the ORDER BY clause */
sqlite3 *db = pParse->db;
- assert( pOrderBy!=0 );
+ if( !pOrderBy ) return 0;
+ if( wsFlags & WHERE_COLUMN_IN ) return 0;
+ if( pIdx->bUnordered ) return 0;
+
nTerm = pOrderBy->nExpr;
assert( nTerm>0 );
@@ -96999,11 +104059,14 @@
return 1;
}
if( pIdx->onError!=OE_None && i==pIdx->nColumn
+ && (wsFlags & WHERE_COLUMN_NULL)==0
&& !referencesOtherTables(pOrderBy, pMaskSet, j, base) ){
/* All terms of this index match some prefix of the ORDER BY clause
** and the index is UNIQUE and no terms on the tail of the ORDER BY
** clause reference other tables in a join. If this is all true then
- ** the order by clause is superfluous. */
+ ** the order by clause is superfluous. Not that if the matching
+ ** condition is IS NULL then the result is not necessarily unique
+ ** even on a UNIQUE index, so disallow those cases. */
return 1;
}
return 0;
@@ -97099,11 +104162,14 @@
WhereTerm * const pWCEnd = &pWC->a[pWC->nTerm]; /* End of pWC->a[] */
WhereTerm *pTerm; /* A single term of the WHERE clause */
- /* No OR-clause optimization allowed if the INDEXED BY or NOT INDEXED clauses
- ** are used */
+ /* The OR-clause optimization is disallowed if the INDEXED BY or
+ ** NOT INDEXED clauses are used or if the WHERE_AND_ONLY bit is set. */
if( pSrc->notIndexed || pSrc->pIndex!=0 ){
return;
}
+ if( pWC->wctrlFlags & WHERE_AND_ONLY ){
+ return;
+ }
/* Search the WHERE clause terms for a usable WO_OR term. */
for(pTerm=pWC->a; pTerm<pWCEnd; pTerm++){
@@ -97131,8 +104197,10 @@
WhereClause tempWC;
tempWC.pParse = pWC->pParse;
tempWC.pMaskSet = pWC->pMaskSet;
+ tempWC.pOuter = pWC;
tempWC.op = TK_AND;
tempWC.a = pOrTerm;
+ tempWC.wctrlFlags = 0;
tempWC.nTerm = 1;
bestIndex(pParse, &tempWC, pSrc, notReady, notValid, 0, &sTermCost);
}else{
@@ -97212,6 +104280,10 @@
WhereTerm *pWCEnd; /* End of pWC->a[] */
Table *pTable; /* Table tht might be indexed */
+ if( pParse->nQueryLoop<=(double)1 ){
+ /* There is no point in building an automatic index for a single scan */
+ return;
+ }
if( (pParse->db->flags & SQLITE_AutoIndex)==0 ){
/* Automatic indices are disabled at run-time */
return;
@@ -97224,6 +104296,10 @@
/* The NOT INDEXED clause appears in the SQL. */
return;
}
+ if( pSrc->isCorrelated ){
+ /* The source is a correlated sub-query. No point in indexing it. */
+ return;
+ }
assert( pParse->nQueryLoop >= (double)1 );
pTable = pSrc->pTab;
@@ -97240,7 +104316,7 @@
pWCEnd = &pWC->a[pWC->nTerm];
for(pTerm=pWC->a; pTerm<pWCEnd; pTerm++){
if( termCanDriveIndex(pTerm, pSrc, notReady) ){
- WHERETRACE(("auto-index reduces cost from %.2f to %.2f\n",
+ WHERETRACE(("auto-index reduces cost from %.1f to %.1f\n",
pCost->rCost, costTempIdx));
pCost->rCost = costTempIdx;
pCost->plan.nRow = logN + 1;
@@ -97274,7 +104350,6 @@
int nByte; /* Byte of memory needed for pIdx */
Index *pIdx; /* Object describing the transient index */
Vdbe *v; /* Prepared statement under construction */
- int regIsInit; /* Register set by initialization */
int addrInit; /* Address of the initialization bypass jump */
Table *pTable; /* The table being indexed */
KeyInfo *pKeyinfo; /* Key information for the index */
@@ -97291,9 +104366,7 @@
** transient index on 2nd and subsequent iterations of the loop. */
v = pParse->pVdbe;
assert( v!=0 );
- regIsInit = ++pParse->nMem;
- addrInit = sqlite3VdbeAddOp1(v, OP_If, regIsInit);
- sqlite3VdbeAddOp2(v, OP_Integer, 1, regIsInit);
+ addrInit = sqlite3CodeOnce(pParse);
/* Count the number of columns that will be added to the index
** and used to match WHERE clause constraints */
@@ -97361,7 +104434,7 @@
idxCols |= cMask;
pIdx->aiColumn[n] = pTerm->u.leftColumn;
pColl = sqlite3BinaryCompareCollSeq(pParse, pX->pLeft, pX->pRight);
- pIdx->azColl[n] = pColl->zName;
+ pIdx->azColl[n] = ALWAYS(pColl) ? pColl->zName : "BINARY";
n++;
}
}
@@ -97440,6 +104513,7 @@
testcase( pTerm->eOperator==WO_IN );
testcase( pTerm->eOperator==WO_ISNULL );
if( pTerm->eOperator & (WO_IN|WO_ISNULL) ) continue;
+ if( pTerm->wtFlags & TERM_VNULL ) continue;
nTerm++;
}
@@ -97490,6 +104564,7 @@
testcase( pTerm->eOperator==WO_IN );
testcase( pTerm->eOperator==WO_ISNULL );
if( pTerm->eOperator & (WO_IN|WO_ISNULL) ) continue;
+ if( pTerm->wtFlags & TERM_VNULL ) continue;
pIdxCons[j].iColumn = pTerm->u.leftColumn;
pIdxCons[j].iTermOffset = i;
pIdxCons[j].op = (u8)pTerm->eOperator;
@@ -97716,48 +104791,85 @@
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */
+#ifdef SQLITE_ENABLE_STAT3
/*
-** Argument pIdx is a pointer to an index structure that has an array of
-** SQLITE_INDEX_SAMPLES evenly spaced samples of the first indexed column
-** stored in Index.aSample. The domain of values stored in said column
-** may be thought of as divided into (SQLITE_INDEX_SAMPLES+1) regions.
-** Region 0 contains all values smaller than the first sample value. Region
-** 1 contains values larger than or equal to the value of the first sample,
-** but smaller than the value of the second. And so on.
+** Estimate the location of a particular key among all keys in an
+** index. Store the results in aStat as follows:
**
-** If successful, this function determines which of the regions value
-** pVal lies in, sets *piRegion to the region index (a value between 0
-** and SQLITE_INDEX_SAMPLES+1, inclusive) and returns SQLITE_OK.
-** Or, if an OOM occurs while converting text values between encodings,
-** SQLITE_NOMEM is returned and *piRegion is undefined.
+** aStat[0] Est. number of rows less than pVal
+** aStat[1] Est. number of rows equal to pVal
+**
+** Return SQLITE_OK on success.
*/
-#ifdef SQLITE_ENABLE_STAT2
-static int whereRangeRegion(
+static int whereKeyStats(
Parse *pParse, /* Database connection */
Index *pIdx, /* Index to consider domain of */
sqlite3_value *pVal, /* Value to consider */
- int *piRegion /* OUT: Region of domain in which value lies */
+ int roundUp, /* Round up if true. Round down if false */
+ tRowcnt *aStat /* OUT: stats written here */
){
- if( ALWAYS(pVal) ){
- IndexSample *aSample = pIdx->aSample;
- int i = 0;
- int eType = sqlite3_value_type(pVal);
+ tRowcnt n;
+ IndexSample *aSample;
+ int i, eType;
+ int isEq = 0;
+ i64 v;
+ double r, rS;
- if( eType==SQLITE_INTEGER || eType==SQLITE_FLOAT ){
- double r = sqlite3_value_double(pVal);
- for(i=0; i<SQLITE_INDEX_SAMPLES; i++){
- if( aSample[i].eType==SQLITE_NULL ) continue;
- if( aSample[i].eType>=SQLITE_TEXT || aSample[i].u.r>r ) break;
+ assert( roundUp==0 || roundUp==1 );
+ assert( pIdx->nSample>0 );
+ if( pVal==0 ) return SQLITE_ERROR;
+ n = pIdx->aiRowEst[0];
+ aSample = pIdx->aSample;
+ eType = sqlite3_value_type(pVal);
+
+ if( eType==SQLITE_INTEGER ){
+ v = sqlite3_value_int64(pVal);
+ r = (i64)v;
+ for(i=0; i<pIdx->nSample; i++){
+ if( aSample[i].eType==SQLITE_NULL ) continue;
+ if( aSample[i].eType>=SQLITE_TEXT ) break;
+ if( aSample[i].eType==SQLITE_INTEGER ){
+ if( aSample[i].u.i>=v ){
+ isEq = aSample[i].u.i==v;
+ break;
+ }
+ }else{
+ assert( aSample[i].eType==SQLITE_FLOAT );
+ if( aSample[i].u.r>=r ){
+ isEq = aSample[i].u.r==r;
+ break;
+ }
}
- }else{
+ }
+ }else if( eType==SQLITE_FLOAT ){
+ r = sqlite3_value_double(pVal);
+ for(i=0; i<pIdx->nSample; i++){
+ if( aSample[i].eType==SQLITE_NULL ) continue;
+ if( aSample[i].eType>=SQLITE_TEXT ) break;
+ if( aSample[i].eType==SQLITE_FLOAT ){
+ rS = aSample[i].u.r;
+ }else{
+ rS = aSample[i].u.i;
+ }
+ if( rS>=r ){
+ isEq = rS==r;
+ break;
+ }
+ }
+ }else if( eType==SQLITE_NULL ){
+ i = 0;
+ if( aSample[0].eType==SQLITE_NULL ) isEq = 1;
+ }else{
+ assert( eType==SQLITE_TEXT || eType==SQLITE_BLOB );
+ for(i=0; i<pIdx->nSample; i++){
+ if( aSample[i].eType==SQLITE_TEXT || aSample[i].eType==SQLITE_BLOB ){
+ break;
+ }
+ }
+ if( i<pIdx->nSample ){
sqlite3 *db = pParse->db;
CollSeq *pColl;
const u8 *z;
- int n;
-
- /* pVal comes from sqlite3ValueFromExpr() so the type cannot be NULL */
- assert( eType==SQLITE_TEXT || eType==SQLITE_BLOB );
-
if( eType==SQLITE_BLOB ){
z = (const u8 *)sqlite3_value_blob(pVal);
pColl = db->pDfltColl;
@@ -97776,12 +104888,12 @@
assert( z && pColl && pColl->xCmp );
}
n = sqlite3ValueBytes(pVal, pColl->enc);
-
- for(i=0; i<SQLITE_INDEX_SAMPLES; i++){
- int r;
+
+ for(; i<pIdx->nSample; i++){
+ int c;
int eSampletype = aSample[i].eType;
- if( eSampletype==SQLITE_NULL || eSampletype<eType ) continue;
- if( (eSampletype!=eType) ) break;
+ if( eSampletype<eType ) continue;
+ if( eSampletype!=eType ) break;
#ifndef SQLITE_OMIT_UTF16
if( pColl->enc!=SQLITE_UTF8 ){
int nSample;
@@ -97792,23 +104904,54 @@
assert( db->mallocFailed );
return SQLITE_NOMEM;
}
- r = pColl->xCmp(pColl->pUser, nSample, zSample, n, z);
+ c = pColl->xCmp(pColl->pUser, nSample, zSample, n, z);
sqlite3DbFree(db, zSample);
}else
#endif
{
- r = pColl->xCmp(pColl->pUser, aSample[i].nByte, aSample[i].u.z, n, z);
+ c = pColl->xCmp(pColl->pUser, aSample[i].nByte, aSample[i].u.z, n, z);
}
- if( r>0 ) break;
+ if( c>=0 ){
+ if( c==0 ) isEq = 1;
+ break;
+ }
}
}
+ }
- assert( i>=0 && i<=SQLITE_INDEX_SAMPLES );
- *piRegion = i;
+ /* At this point, aSample[i] is the first sample that is greater than
+ ** or equal to pVal. Or if i==pIdx->nSample, then all samples are less
+ ** than pVal. If aSample[i]==pVal, then isEq==1.
+ */
+ if( isEq ){
+ assert( i<pIdx->nSample );
+ aStat[0] = aSample[i].nLt;
+ aStat[1] = aSample[i].nEq;
+ }else{
+ tRowcnt iLower, iUpper, iGap;
+ if( i==0 ){
+ iLower = 0;
+ iUpper = aSample[0].nLt;
+ }else{
+ iUpper = i>=pIdx->nSample ? n : aSample[i].nLt;
+ iLower = aSample[i-1].nEq + aSample[i-1].nLt;
+ }
+ aStat[1] = pIdx->avgEq;
+ if( iLower>=iUpper ){
+ iGap = 0;
+ }else{
+ iGap = iUpper - iLower;
+ }
+ if( roundUp ){
+ iGap = (iGap*2)/3;
+ }else{
+ iGap = iGap/3;
+ }
+ aStat[0] = iLower + iGap;
}
return SQLITE_OK;
}
-#endif /* #ifdef SQLITE_ENABLE_STAT2 */
+#endif /* SQLITE_ENABLE_STAT3 */
/*
** If expression pExpr represents a literal value, set *pp to point to
@@ -97826,7 +104969,7 @@
**
** If an error occurs, return an error code. Otherwise, SQLITE_OK.
*/
-#ifdef SQLITE_ENABLE_STAT2
+#ifdef SQLITE_ENABLE_STAT3
static int valueFromExpr(
Parse *pParse,
Expr *pExpr,
@@ -97837,7 +104980,7 @@
|| (pExpr->op==TK_REGISTER && pExpr->op2==TK_VARIABLE)
){
int iVar = pExpr->iColumn;
- sqlite3VdbeSetVarmask(pParse->pVdbe, iVar); /* IMP: R-23257-02778 */
+ sqlite3VdbeSetVarmask(pParse->pVdbe, iVar);
*pp = sqlite3VdbeGetValue(pParse->pReprepare, iVar, aff);
return SQLITE_OK;
}
@@ -97874,17 +105017,15 @@
**
** then nEq should be passed 0.
**
-** The returned value is an integer between 1 and 100, inclusive. A return
-** value of 1 indicates that the proposed range scan is expected to visit
-** approximately 1/100th (1%) of the rows selected by the nEq equality
-** constraints (if any). A return value of 100 indicates that it is expected
-** that the range scan will visit every row (100%) selected by the equality
-** constraints.
+** The returned value is an integer divisor to reduce the estimated
+** search space. A return value of 1 means that range constraints are
+** no help at all. A return value of 2 means range constraints are
+** expected to reduce the search space by half. And so forth...
**
-** In the absence of sqlite_stat2 ANALYZE data, each range inequality
-** reduces the search space by 2/3rds. Hence a single constraint (x>?)
-** results in a return of 33 and a range constraint (x>? AND x<?) results
-** in a return of 11.
+** In the absence of sqlite_stat3 ANALYZE data, each range inequality
+** reduces the search space by a factor of 4. Hence a single constraint (x>?)
+** results in a return of 4 and a range constraint (x>? AND x<?) results
+** in a return of 16.
*/
static int whereRangeScanEst(
Parse *pParse, /* Parsing & code generating context */
@@ -97892,81 +105033,167 @@
int nEq, /* index into p->aCol[] of the range-compared column */
WhereTerm *pLower, /* Lower bound on the range. ex: "x>123" Might be NULL */
WhereTerm *pUpper, /* Upper bound on the range. ex: "x<455" Might be NULL */
- int *piEst /* OUT: Return value */
+ double *pRangeDiv /* OUT: Reduce search space by this divisor */
){
int rc = SQLITE_OK;
-#ifdef SQLITE_ENABLE_STAT2
+#ifdef SQLITE_ENABLE_STAT3
- if( nEq==0 && p->aSample ){
- sqlite3_value *pLowerVal = 0;
- sqlite3_value *pUpperVal = 0;
- int iEst;
- int iLower = 0;
- int iUpper = SQLITE_INDEX_SAMPLES;
+ if( nEq==0 && p->nSample ){
+ sqlite3_value *pRangeVal;
+ tRowcnt iLower = 0;
+ tRowcnt iUpper = p->aiRowEst[0];
+ tRowcnt a[2];
u8 aff = p->pTable->aCol[p->aiColumn[0]].affinity;
if( pLower ){
Expr *pExpr = pLower->pExpr->pRight;
- rc = valueFromExpr(pParse, pExpr, aff, &pLowerVal);
+ rc = valueFromExpr(pParse, pExpr, aff, &pRangeVal);
+ assert( pLower->eOperator==WO_GT || pLower->eOperator==WO_GE );
+ if( rc==SQLITE_OK
+ && whereKeyStats(pParse, p, pRangeVal, 0, a)==SQLITE_OK
+ ){
+ iLower = a[0];
+ if( pLower->eOperator==WO_GT ) iLower += a[1];
+ }
+ sqlite3ValueFree(pRangeVal);
}
if( rc==SQLITE_OK && pUpper ){
Expr *pExpr = pUpper->pExpr->pRight;
- rc = valueFromExpr(pParse, pExpr, aff, &pUpperVal);
- }
-
- if( rc!=SQLITE_OK || (pLowerVal==0 && pUpperVal==0) ){
- sqlite3ValueFree(pLowerVal);
- sqlite3ValueFree(pUpperVal);
- goto range_est_fallback;
- }else if( pLowerVal==0 ){
- rc = whereRangeRegion(pParse, p, pUpperVal, &iUpper);
- if( pLower ) iLower = iUpper/2;
- }else if( pUpperVal==0 ){
- rc = whereRangeRegion(pParse, p, pLowerVal, &iLower);
- if( pUpper ) iUpper = (iLower + SQLITE_INDEX_SAMPLES + 1)/2;
- }else{
- rc = whereRangeRegion(pParse, p, pUpperVal, &iUpper);
- if( rc==SQLITE_OK ){
- rc = whereRangeRegion(pParse, p, pLowerVal, &iLower);
+ rc = valueFromExpr(pParse, pExpr, aff, &pRangeVal);
+ assert( pUpper->eOperator==WO_LT || pUpper->eOperator==WO_LE );
+ if( rc==SQLITE_OK
+ && whereKeyStats(pParse, p, pRangeVal, 1, a)==SQLITE_OK
+ ){
+ iUpper = a[0];
+ if( pUpper->eOperator==WO_LE ) iUpper += a[1];
}
+ sqlite3ValueFree(pRangeVal);
}
-
- iEst = iUpper - iLower;
- testcase( iEst==SQLITE_INDEX_SAMPLES );
- assert( iEst<=SQLITE_INDEX_SAMPLES );
- if( iEst<1 ){
- iEst = 1;
+ if( rc==SQLITE_OK ){
+ if( iUpper<=iLower ){
+ *pRangeDiv = (double)p->aiRowEst[0];
+ }else{
+ *pRangeDiv = (double)p->aiRowEst[0]/(double)(iUpper - iLower);
+ }
+ WHERETRACE(("range scan regions: %u..%u div=%g\n",
+ (u32)iLower, (u32)iUpper, *pRangeDiv));
+ return SQLITE_OK;
}
-
- sqlite3ValueFree(pLowerVal);
- sqlite3ValueFree(pUpperVal);
- *piEst = (iEst * 100)/SQLITE_INDEX_SAMPLES;
- return rc;
}
-range_est_fallback:
#else
UNUSED_PARAMETER(pParse);
UNUSED_PARAMETER(p);
UNUSED_PARAMETER(nEq);
#endif
assert( pLower || pUpper );
- if( pLower && pUpper ){
- *piEst = 11;
- }else{
- *piEst = 33;
- }
+ *pRangeDiv = (double)1;
+ if( pLower && (pLower->wtFlags & TERM_VNULL)==0 ) *pRangeDiv *= (double)4;
+ if( pUpper ) *pRangeDiv *= (double)4;
return rc;
}
+#ifdef SQLITE_ENABLE_STAT3
+/*
+** Estimate the number of rows that will be returned based on
+** an equality constraint x=VALUE and where that VALUE occurs in
+** the histogram data. This only works when x is the left-most
+** column of an index and sqlite_stat3 histogram data is available
+** for that index. When pExpr==NULL that means the constraint is
+** "x IS NULL" instead of "x=VALUE".
+**
+** Write the estimated row count into *pnRow and return SQLITE_OK.
+** If unable to make an estimate, leave *pnRow unchanged and return
+** non-zero.
+**
+** This routine can fail if it is unable to load a collating sequence
+** required for string comparison, or if unable to allocate memory
+** for a UTF conversion required for comparison. The error is stored
+** in the pParse structure.
+*/
+static int whereEqualScanEst(
+ Parse *pParse, /* Parsing & code generating context */
+ Index *p, /* The index whose left-most column is pTerm */
+ Expr *pExpr, /* Expression for VALUE in the x=VALUE constraint */
+ double *pnRow /* Write the revised row estimate here */
+){
+ sqlite3_value *pRhs = 0; /* VALUE on right-hand side of pTerm */
+ u8 aff; /* Column affinity */
+ int rc; /* Subfunction return code */
+ tRowcnt a[2]; /* Statistics */
+
+ assert( p->aSample!=0 );
+ assert( p->nSample>0 );
+ aff = p->pTable->aCol[p->aiColumn[0]].affinity;
+ if( pExpr ){
+ rc = valueFromExpr(pParse, pExpr, aff, &pRhs);
+ if( rc ) goto whereEqualScanEst_cancel;
+ }else{
+ pRhs = sqlite3ValueNew(pParse->db);
+ }
+ if( pRhs==0 ) return SQLITE_NOTFOUND;
+ rc = whereKeyStats(pParse, p, pRhs, 0, a);
+ if( rc==SQLITE_OK ){
+ WHERETRACE(("equality scan regions: %d\n", (int)a[1]));
+ *pnRow = a[1];
+ }
+whereEqualScanEst_cancel:
+ sqlite3ValueFree(pRhs);
+ return rc;
+}
+#endif /* defined(SQLITE_ENABLE_STAT3) */
+
+#ifdef SQLITE_ENABLE_STAT3
+/*
+** Estimate the number of rows that will be returned based on
+** an IN constraint where the right-hand side of the IN operator
+** is a list of values. Example:
+**
+** WHERE x IN (1,2,3,4)
+**
+** Write the estimated row count into *pnRow and return SQLITE_OK.
+** If unable to make an estimate, leave *pnRow unchanged and return
+** non-zero.
+**
+** This routine can fail if it is unable to load a collating sequence
+** required for string comparison, or if unable to allocate memory
+** for a UTF conversion required for comparison. The error is stored
+** in the pParse structure.
+*/
+static int whereInScanEst(
+ Parse *pParse, /* Parsing & code generating context */
+ Index *p, /* The index whose left-most column is pTerm */
+ ExprList *pList, /* The value list on the RHS of "x IN (v1,v2,v3,...)" */
+ double *pnRow /* Write the revised row estimate here */
+){
+ int rc = SQLITE_OK; /* Subfunction return code */
+ double nEst; /* Number of rows for a single term */
+ double nRowEst = (double)0; /* New estimate of the number of rows */
+ int i; /* Loop counter */
+
+ assert( p->aSample!=0 );
+ for(i=0; rc==SQLITE_OK && i<pList->nExpr; i++){
+ nEst = p->aiRowEst[0];
+ rc = whereEqualScanEst(pParse, p, pList->a[i].pExpr, &nEst);
+ nRowEst += nEst;
+ }
+ if( rc==SQLITE_OK ){
+ if( nRowEst > p->aiRowEst[0] ) nRowEst = p->aiRowEst[0];
+ *pnRow = nRowEst;
+ WHERETRACE(("IN row estimate: est=%g\n", nRowEst));
+ }
+ return rc;
+}
+#endif /* defined(SQLITE_ENABLE_STAT3) */
+
/*
-** Find the query plan for accessing a particular table. Write the
+** Find the best query plan for accessing a particular table. Write the
** best query plan and its cost into the WhereCost object supplied as the
** last parameter.
**
** The lowest cost plan wins. The cost is an estimate of the amount of
-** CPU and disk I/O need to process the request using the selected plan.
+** CPU and disk I/O needed to process the requested result.
** Factors that influence cost include:
**
** * The estimated number of rows that will be retrieved. (The
@@ -97985,7 +105212,7 @@
**
** If a NOT INDEXED clause (pSrc->notIndexed!=0) was attached to the table
** in the SELECT statement, then no indexes are considered. However, the
-** selected plan may still take advantage of the tables built-in rowid
+** selected plan may still take advantage of the built-in rowid primary key
** index.
*/
static void bestBtreeIndex(
@@ -97995,6 +105222,7 @@
Bitmask notReady, /* Mask of cursors not available for indexing */
Bitmask notValid, /* Cursors not available for any purpose */
ExprList *pOrderBy, /* The ORDER BY clause */
+ ExprList *pDistinct, /* The select-list if query is DISTINCT */
WhereCost *pCost /* Lowest cost query plan */
){
int iCur = pSrc->iCursor; /* The cursor of the table to be accessed */
@@ -98003,7 +105231,7 @@
int eqTermMask; /* Current mask of valid equality operators */
int idxEqTermMask; /* Index mask of valid equality operators */
Index sPk; /* A fake index object for the primary key */
- unsigned int aiRowEstPk[2]; /* The aiRowEst[] value for the sPk index */
+ tRowcnt aiRowEstPk[2]; /* The aiRowEst[] value for the sPk index */
int aiColumnPk = -1; /* The aColumn[] value for the sPk index */
int wsFlagMask; /* Allowed flags in pCost->plan.wsFlag */
@@ -98028,9 +105256,11 @@
wsFlagMask = ~(WHERE_ROWID_EQ|WHERE_ROWID_RANGE);
eqTermMask = idxEqTermMask;
}else{
- /* There is no INDEXED BY clause. Create a fake Index object to
- ** represent the primary key */
- Index *pFirst; /* Any other index on the table */
+ /* There is no INDEXED BY clause. Create a fake Index object in local
+ ** variable sPk to represent the rowid primary key index. Make this
+ ** fake index the first in a chain of Index objects with all of the real
+ ** indices to follow */
+ Index *pFirst; /* First of real indices on the table */
memset(&sPk, 0, sizeof(Index));
sPk.nColumn = 1;
sPk.aiColumn = &aiColumnPk;
@@ -98041,6 +105271,8 @@
aiRowEstPk[1] = 1;
pFirst = pSrc->pTab->pIndex;
if( pSrc->notIndexed==0 ){
+ /* The real indices of the table are only considered if the
+ ** NOT INDEXED qualifier is omitted from the FROM clause */
sPk.pNext = pFirst;
}
pProbe = &sPk;
@@ -98054,19 +105286,22 @@
/* Loop over all indices looking for the best one to use
*/
for(; pProbe; pIdx=pProbe=pProbe->pNext){
- const unsigned int * const aiRowEst = pProbe->aiRowEst;
+ const tRowcnt * const aiRowEst = pProbe->aiRowEst;
double cost; /* Cost of using pProbe */
double nRow; /* Estimated number of rows in result set */
+ double log10N = (double)1; /* base-10 logarithm of nRow (inexact) */
int rev; /* True to scan in reverse order */
int wsFlags = 0;
Bitmask used = 0;
/* The following variables are populated based on the properties of
- ** scan being evaluated. They are then used to determine the expected
+ ** index being evaluated. They are then used to determine the expected
** cost and number of rows returned.
**
** nEq:
** Number of equality terms that can be implemented using the index.
+ ** In other words, the number of initial fields in the index that
+ ** are used in == or IN or NOT NULL constraints of the WHERE clause.
**
** nInMul:
** The "in-multiplier". This is an estimate of how many seek operations
@@ -98090,16 +105325,16 @@
**
** bInEst:
** Set to true if there was at least one "x IN (SELECT ...)" term used
- ** in determining the value of nInMul.
+ ** in determining the value of nInMul. Note that the RHS of the
+ ** IN operator must be a SELECT, not a value list, for this variable
+ ** to be true.
**
- ** estBound:
- ** An estimate on the amount of the table that must be searched. A
- ** value of 100 means the entire table is searched. Range constraints
- ** might reduce this to a value less than 100 to indicate that only
- ** a fraction of the table needs searching. In the absence of
- ** sqlite_stat2 ANALYZE data, a single inequality reduces the search
- ** space to 1/3rd its original size. So an x>? constraint reduces
- ** estBound to 33. Two constraints (x>? AND x<?) reduce estBound to 11.
+ ** rangeDiv:
+ ** An estimate of a divisor by which to reduce the search space due
+ ** to inequality constraints. In the absence of sqlite_stat3 ANALYZE
+ ** data, a single inequality reduces the search space to 1/4rd its
+ ** original size (rangeDiv==4). Two inequalities reduce the search
+ ** space to 1/16th of its original size (rangeDiv==16).
**
** bSort:
** Boolean. True if there is an ORDER BY clause that will require an
@@ -98107,25 +105342,32 @@
** correctly order records).
**
** bLookup:
- ** Boolean. True if for each index entry visited a lookup on the
- ** corresponding table b-tree is required. This is always false
- ** for the rowid index. For other indexes, it is true unless all the
- ** columns of the table used by the SELECT statement are present in
- ** the index (such an index is sometimes described as a covering index).
+ ** Boolean. True if a table lookup is required for each index entry
+ ** visited. In other words, true if this is not a covering index.
+ ** This is always false for the rowid primary key index of a table.
+ ** For other indexes, it is true unless all the columns of the table
+ ** used by the SELECT statement are present in the index (such an
+ ** index is sometimes described as a covering index).
** For example, given the index on (a, b), the second of the following
- ** two queries requires table b-tree lookups, but the first does not.
+ ** two queries requires table b-tree lookups in order to find the value
+ ** of column c, but the first does not because columns a and b are
+ ** both available in the index.
**
** SELECT a, b FROM tbl WHERE a = 1;
** SELECT a, b, c FROM tbl WHERE a = 1;
*/
- int nEq;
- int bInEst = 0;
- int nInMul = 1;
- int estBound = 100;
- int nBound = 0; /* Number of range constraints seen */
- int bSort = 0;
- int bLookup = 0;
- WhereTerm *pTerm; /* A single term of the WHERE clause */
+ int nEq; /* Number of == or IN terms matching index */
+ int bInEst = 0; /* True if "x IN (SELECT...)" seen */
+ int nInMul = 1; /* Number of distinct equalities to lookup */
+ double rangeDiv = (double)1; /* Estimated reduction in search space */
+ int nBound = 0; /* Number of range constraints seen */
+ int bSort = !!pOrderBy; /* True if external sort required */
+ int bDist = !!pDistinct; /* True if index cannot help with DISTINCT */
+ int bLookup = 0; /* True if not a covering index */
+ WhereTerm *pTerm; /* A single term of the WHERE clause */
+#ifdef SQLITE_ENABLE_STAT3
+ WhereTerm *pFirstTerm = 0; /* First term matching the index */
+#endif
/* Determine the values of nEq and nInMul */
for(nEq=0; nEq<pProbe->nColumn; nEq++){
@@ -98133,61 +105375,82 @@
pTerm = findTerm(pWC, iCur, j, notReady, eqTermMask, pIdx);
if( pTerm==0 ) break;
wsFlags |= (WHERE_COLUMN_EQ|WHERE_ROWID_EQ);
+ testcase( pTerm->pWC!=pWC );
if( pTerm->eOperator & WO_IN ){
Expr *pExpr = pTerm->pExpr;
wsFlags |= WHERE_COLUMN_IN;
if( ExprHasProperty(pExpr, EP_xIsSelect) ){
+ /* "x IN (SELECT ...)": Assume the SELECT returns 25 rows */
nInMul *= 25;
bInEst = 1;
- }else if( ALWAYS(pExpr->x.pList) ){
- nInMul *= pExpr->x.pList->nExpr + 1;
+ }else if( ALWAYS(pExpr->x.pList && pExpr->x.pList->nExpr) ){
+ /* "x IN (value, value, ...)" */
+ nInMul *= pExpr->x.pList->nExpr;
}
}else if( pTerm->eOperator & WO_ISNULL ){
wsFlags |= WHERE_COLUMN_NULL;
}
+#ifdef SQLITE_ENABLE_STAT3
+ if( nEq==0 && pProbe->aSample ) pFirstTerm = pTerm;
+#endif
used |= pTerm->prereqRight;
}
-
- /* Determine the value of estBound. */
- if( nEq<pProbe->nColumn ){
- int j = pProbe->aiColumn[nEq];
+
+ /* If the index being considered is UNIQUE, and there is an equality
+ ** constraint for all columns in the index, then this search will find
+ ** at most a single row. In this case set the WHERE_UNIQUE flag to
+ ** indicate this to the caller.
+ **
+ ** Otherwise, if the search may find more than one row, test to see if
+ ** there is a range constraint on indexed column (nEq+1) that can be
+ ** optimized using the index.
+ */
+ if( nEq==pProbe->nColumn && pProbe->onError!=OE_None ){
+ testcase( wsFlags & WHERE_COLUMN_IN );
+ testcase( wsFlags & WHERE_COLUMN_NULL );
+ if( (wsFlags & (WHERE_COLUMN_IN|WHERE_COLUMN_NULL))==0 ){
+ wsFlags |= WHERE_UNIQUE;
+ }
+ }else if( pProbe->bUnordered==0 ){
+ int j = (nEq==pProbe->nColumn ? -1 : pProbe->aiColumn[nEq]);
if( findTerm(pWC, iCur, j, notReady, WO_LT|WO_LE|WO_GT|WO_GE, pIdx) ){
WhereTerm *pTop = findTerm(pWC, iCur, j, notReady, WO_LT|WO_LE, pIdx);
WhereTerm *pBtm = findTerm(pWC, iCur, j, notReady, WO_GT|WO_GE, pIdx);
- whereRangeScanEst(pParse, pProbe, nEq, pBtm, pTop, &estBound);
+ whereRangeScanEst(pParse, pProbe, nEq, pBtm, pTop, &rangeDiv);
if( pTop ){
nBound = 1;
wsFlags |= WHERE_TOP_LIMIT;
used |= pTop->prereqRight;
+ testcase( pTop->pWC!=pWC );
}
if( pBtm ){
nBound++;
wsFlags |= WHERE_BTM_LIMIT;
used |= pBtm->prereqRight;
+ testcase( pBtm->pWC!=pWC );
}
wsFlags |= (WHERE_COLUMN_RANGE|WHERE_ROWID_RANGE);
}
- }else if( pProbe->onError!=OE_None ){
- testcase( wsFlags & WHERE_COLUMN_IN );
- testcase( wsFlags & WHERE_COLUMN_NULL );
- if( (wsFlags & (WHERE_COLUMN_IN|WHERE_COLUMN_NULL))==0 ){
- wsFlags |= WHERE_UNIQUE;
- }
}
/* If there is an ORDER BY clause and the index being considered will
** naturally scan rows in the required order, set the appropriate flags
** in wsFlags. Otherwise, if there is an ORDER BY clause but the index
** will scan rows in a different order, set the bSort variable. */
- if( pOrderBy ){
- if( (wsFlags & (WHERE_COLUMN_IN|WHERE_COLUMN_NULL))==0
- && isSortingIndex(pParse,pWC->pMaskSet,pProbe,iCur,pOrderBy,nEq,&rev)
- ){
- wsFlags |= WHERE_ROWID_RANGE|WHERE_COLUMN_RANGE|WHERE_ORDERBY;
- wsFlags |= (rev ? WHERE_REVERSE : 0);
- }else{
- bSort = 1;
- }
+ if( isSortingIndex(
+ pParse, pWC->pMaskSet, pProbe, iCur, pOrderBy, nEq, wsFlags, &rev)
+ ){
+ bSort = 0;
+ wsFlags |= WHERE_ROWID_RANGE|WHERE_COLUMN_RANGE|WHERE_ORDERBY;
+ wsFlags |= (rev ? WHERE_REVERSE : 0);
+ }
+
+ /* If there is a DISTINCT qualifier and this index will scan rows in
+ ** order of the DISTINCT expressions, clear bDist and set the appropriate
+ ** flags in wsFlags. */
+ if( isDistinctIndex(pParse, pWC, pProbe, iCur, pDistinct, nEq) ){
+ bDist = 0;
+ wsFlags |= WHERE_ROWID_RANGE|WHERE_COLUMN_RANGE|WHERE_DISTINCT;
}
/* If currently calculating the cost of using an index (not the IPK
@@ -98212,8 +105475,8 @@
}
/*
- ** Estimate the number of rows of output. For an IN operator,
- ** do not let the estimate exceed half the rows in the table.
+ ** Estimate the number of rows of output. For an "x IN (SELECT...)"
+ ** constraint, do not let the estimate exceed half the rows in the table.
*/
nRow = (double)(aiRowEst[nEq] * nInMul);
if( bInEst && nRow*2>aiRowEst[0] ){
@@ -98221,31 +105484,96 @@
nInMul = (int)(nRow / aiRowEst[nEq]);
}
- /* Assume constant cost to access a row and logarithmic cost to
- ** do a binary search. Hence, the initial cost is the number of output
- ** rows plus log2(table-size) times the number of binary searches.
+#ifdef SQLITE_ENABLE_STAT3
+ /* If the constraint is of the form x=VALUE or x IN (E1,E2,...)
+ ** and we do not think that values of x are unique and if histogram
+ ** data is available for column x, then it might be possible
+ ** to get a better estimate on the number of rows based on
+ ** VALUE and how common that value is according to the histogram.
*/
- cost = nRow + nInMul*estLog(aiRowEst[0]);
+ if( nRow>(double)1 && nEq==1 && pFirstTerm!=0 && aiRowEst[1]>1 ){
+ assert( (pFirstTerm->eOperator & (WO_EQ|WO_ISNULL|WO_IN))!=0 );
+ if( pFirstTerm->eOperator & (WO_EQ|WO_ISNULL) ){
+ testcase( pFirstTerm->eOperator==WO_EQ );
+ testcase( pFirstTerm->eOperator==WO_ISNULL );
+ whereEqualScanEst(pParse, pProbe, pFirstTerm->pExpr->pRight, &nRow);
+ }else if( bInEst==0 ){
+ assert( pFirstTerm->eOperator==WO_IN );
+ whereInScanEst(pParse, pProbe, pFirstTerm->pExpr->x.pList, &nRow);
+ }
+ }
+#endif /* SQLITE_ENABLE_STAT3 */
- /* Adjust the number of rows and the cost downward to reflect rows
+ /* Adjust the number of output rows and downward to reflect rows
** that are excluded by range constraints.
*/
- nRow = (nRow * (double)estBound) / (double)100;
- cost = (cost * (double)estBound) / (double)100;
+ nRow = nRow/rangeDiv;
+ if( nRow<1 ) nRow = 1;
- /* Add in the estimated cost of sorting the result
+ /* Experiments run on real SQLite databases show that the time needed
+ ** to do a binary search to locate a row in a table or index is roughly
+ ** log10(N) times the time to move from one row to the next row within
+ ** a table or index. The actual times can vary, with the size of
+ ** records being an important factor. Both moves and searches are
+ ** slower with larger records, presumably because fewer records fit
+ ** on one page and hence more pages have to be fetched.
+ **
+ ** The ANALYZE command and the sqlite_stat1 and sqlite_stat3 tables do
+ ** not give us data on the relative sizes of table and index records.
+ ** So this computation assumes table records are about twice as big
+ ** as index records
+ */
+ if( (wsFlags & WHERE_NOT_FULLSCAN)==0 ){
+ /* The cost of a full table scan is a number of move operations equal
+ ** to the number of rows in the table.
+ **
+ ** We add an additional 4x penalty to full table scans. This causes
+ ** the cost function to err on the side of choosing an index over
+ ** choosing a full scan. This 4x full-scan penalty is an arguable
+ ** decision and one which we expect to revisit in the future. But
+ ** it seems to be working well enough at the moment.
+ */
+ cost = aiRowEst[0]*4;
+ }else{
+ log10N = estLog(aiRowEst[0]);
+ cost = nRow;
+ if( pIdx ){
+ if( bLookup ){
+ /* For an index lookup followed by a table lookup:
+ ** nInMul index searches to find the start of each index range
+ ** + nRow steps through the index
+ ** + nRow table searches to lookup the table entry using the rowid
+ */
+ cost += (nInMul + nRow)*log10N;
+ }else{
+ /* For a covering index:
+ ** nInMul index searches to find the initial entry
+ ** + nRow steps through the index
+ */
+ cost += nInMul*log10N;
+ }
+ }else{
+ /* For a rowid primary key lookup:
+ ** nInMult table searches to find the initial entry for each range
+ ** + nRow steps through the table
+ */
+ cost += nInMul*log10N;
+ }
+ }
+
+ /* Add in the estimated cost of sorting the result. Actual experimental
+ ** measurements of sorting performance in SQLite show that sorting time
+ ** adds C*N*log10(N) to the cost, where N is the number of rows to be
+ ** sorted and C is a factor between 1.95 and 4.3. We will split the
+ ** difference and select C of 3.0.
*/
if( bSort ){
- cost += cost*estLog(cost);
+ cost += nRow*estLog(nRow)*3;
+ }
+ if( bDist ){
+ cost += nRow*estLog(nRow)*3;
}
- /* If all information can be taken directly from the index, we avoid
- ** doing table lookups. This reduces the cost by half. (Not really -
- ** this needs to be fixed.)
- */
- if( pIdx && bLookup==0 ){
- cost /= (double)2;
- }
/**** Cost of using this index has now been computed ****/
/* If there are additional constraints on this table that cannot
@@ -98286,15 +105614,19 @@
}
}else if( pTerm->eOperator & (WO_LT|WO_LE|WO_GT|WO_GE) ){
if( nSkipRange ){
- /* Ignore the first nBound range constraints since the index
+ /* Ignore the first nSkipRange range constraints since the index
** has already accounted for these */
nSkipRange--;
}else{
/* Assume each additional range constraint reduces the result
- ** set size by a factor of 3 */
+ ** set size by a factor of 3. Indexed range constraints reduce
+ ** the search space by a larger factor: 4. We make indexed range
+ ** more selective intentionally because of the subjective
+ ** observation that indexed range constraints really are more
+ ** selective in practice, on average. */
nRow /= 3;
}
- }else{
+ }else if( pTerm->eOperator!=WO_NOOP ){
/* Any other expression lowers the output row count by half */
nRow /= 2;
}
@@ -98304,11 +105636,11 @@
WHERETRACE((
- "%s(%s): nEq=%d nInMul=%d estBound=%d bSort=%d bLookup=%d wsFlags=0x%x\n"
- " notReady=0x%llx nRow=%.2f cost=%.2f used=0x%llx\n",
+ "%s(%s): nEq=%d nInMul=%d rangeDiv=%d bSort=%d bLookup=%d wsFlags=0x%x\n"
+ " notReady=0x%llx log10N=%.1f nRow=%.1f cost=%.1f used=0x%llx\n",
pSrc->pTab->zName, (pIdx ? pIdx->zName : "ipk"),
- nEq, nInMul, estBound, bSort, bLookup, wsFlags,
- notReady, nRow, cost, used
+ nEq, nInMul, (int)rangeDiv, bSort, bLookup, wsFlags,
+ notReady, log10N, nRow, cost, used
));
/* If this index is the best we have seen so far, then record this
@@ -98386,7 +105718,7 @@
}else
#endif
{
- bestBtreeIndex(pParse, pWC, pSrc, notReady, notValid, pOrderBy, pCost);
+ bestBtreeIndex(pParse, pWC, pSrc, notReady, notValid, pOrderBy, 0, pCost);
}
}
@@ -98709,10 +106041,12 @@
j = i;
if( pPlan->wsFlags&WHERE_BTM_LIMIT ){
- explainAppendTerm(&txt, i++, aCol[aiColumn[j]].zName, ">");
+ char *z = (j==pIndex->nColumn ) ? "rowid" : aCol[aiColumn[j]].zName;
+ explainAppendTerm(&txt, i++, z, ">");
}
if( pPlan->wsFlags&WHERE_TOP_LIMIT ){
- explainAppendTerm(&txt, i, aCol[aiColumn[j]].zName, "<");
+ char *z = (j==pIndex->nColumn ) ? "rowid" : aCol[aiColumn[j]].zName;
+ explainAppendTerm(&txt, i, z, "<");
}
sqlite3StrAccumAppend(&txt, ")", 1);
return sqlite3StrAccumFinish(&txt);
@@ -98811,7 +106145,8 @@
WhereInfo *pWInfo, /* Complete information about the WHERE clause */
int iLevel, /* Which level of pWInfo->a[] should be coded */
u16 wctrlFlags, /* One of the WHERE_* flags defined in sqliteInt.h */
- Bitmask notReady /* Which tables are currently available */
+ Bitmask notReady, /* Which tables are currently available */
+ Expr *pWhere /* Complete WHERE clause */
){
int j, k; /* Loop counters */
int iCur; /* The VDBE cursor for the table */
@@ -99069,7 +106404,7 @@
pIdx = pLevel->plan.u.pIdx;
iIdxCur = pLevel->iIdxCur;
- k = pIdx->aiColumn[nEq]; /* Column for inequality constraints */
+ k = (nEq==pIdx->nColumn ? -1 : pIdx->aiColumn[nEq]);
/* If this loop satisfies a sort order (pOrderBy) request that
** was passed to this function to implement a "SELECT min(x) ..."
@@ -99115,7 +106450,9 @@
** a forward order scan on a descending index, interchange the
** start and end terms (pRangeStart and pRangeEnd).
*/
- if( nEq<pIdx->nColumn && bRev==(pIdx->aSortOrder[nEq]==SQLITE_SO_ASC) ){
+ if( (nEq<pIdx->nColumn && bRev==(pIdx->aSortOrder[nEq]==SQLITE_SO_ASC))
+ || (bRev && pIdx->nColumn==nEq)
+ ){
SWAP(WhereTerm *, pRangeEnd, pRangeStart);
}
@@ -99132,7 +106469,9 @@
if( pRangeStart ){
Expr *pRight = pRangeStart->pExpr->pRight;
sqlite3ExprCode(pParse, pRight, regBase+nEq);
- sqlite3ExprCodeIsNullJump(v, pRight, regBase+nEq, addrNxt);
+ if( (pRangeStart->wtFlags & TERM_VNULL)==0 ){
+ sqlite3ExprCodeIsNullJump(v, pRight, regBase+nEq, addrNxt);
+ }
if( zStartAff ){
if( sqlite3CompareAffinity(pRight, zStartAff[nEq])==SQLITE_AFF_NONE){
/* Since the comparison is to be performed with no conversions
@@ -99171,7 +106510,9 @@
Expr *pRight = pRangeEnd->pExpr->pRight;
sqlite3ExprCacheRemove(pParse, regBase+nEq, 1);
sqlite3ExprCode(pParse, pRight, regBase+nEq);
- sqlite3ExprCodeIsNullJump(v, pRight, regBase+nEq, addrNxt);
+ if( (pRangeEnd->wtFlags & TERM_VNULL)==0 ){
+ sqlite3ExprCodeIsNullJump(v, pRight, regBase+nEq, addrNxt);
+ }
if( zEndAff ){
if( sqlite3CompareAffinity(pRight, zEndAff[nEq])==SQLITE_AFF_NONE){
/* Since the comparison is to be performed with no conversions
@@ -99229,7 +106570,13 @@
/* Record the instruction used to terminate the loop. Disable
** WHERE clause terms made redundant by the index range scan.
*/
- pLevel->op = bRev ? OP_Prev : OP_Next;
+ if( pLevel->plan.wsFlags & WHERE_UNIQUE ){
+ pLevel->op = OP_Noop;
+ }else if( bRev ){
+ pLevel->op = OP_Prev;
+ }else{
+ pLevel->op = OP_Next;
+ }
pLevel->p1 = iIdxCur;
}else
@@ -99275,7 +106622,6 @@
**
*/
WhereClause *pOrWc; /* The OR-clause broken out into subterms */
- WhereTerm *pFinal; /* Final subterm within the OR-clause. */
SrcList *pOrTab; /* Shortened table list or OR-clause generation */
int regReturn = ++pParse->nMem; /* Register used with OP_Gosub */
@@ -99284,14 +106630,14 @@
int iLoopBody = sqlite3VdbeMakeLabel(v); /* Start of loop body */
int iRetInit; /* Address of regReturn init */
int untestedTerms = 0; /* Some terms not completely tested */
- int ii;
+ int ii; /* Loop counter */
+ Expr *pAndExpr = 0; /* An ".. AND (...)" expression */
pTerm = pLevel->plan.u.pTerm;
assert( pTerm!=0 );
assert( pTerm->eOperator==WO_OR );
assert( (pTerm->wtFlags & TERM_ORINFO)!=0 );
pOrWc = &pTerm->u.pOrInfo->wc;
- pFinal = &pOrWc->a[pOrWc->nTerm-1];
pLevel->op = OP_Return;
pLevel->p1 = regReturn;
@@ -99335,13 +106681,28 @@
}
iRetInit = sqlite3VdbeAddOp2(v, OP_Integer, 0, regReturn);
+ /* If the original WHERE clause is z of the form: (x1 OR x2 OR ...) AND y
+ ** Then for every term xN, evaluate as the subexpression: xN AND z
+ ** That way, terms in y that are factored into the disjunction will
+ ** be picked up by the recursive calls to sqlite3WhereBegin() below.
+ */
+ if( pWC->nTerm>1 ){
+ pAndExpr = sqlite3ExprAlloc(pParse->db, TK_AND, 0, 0);
+ pAndExpr->pRight = pWhere;
+ }
+
for(ii=0; ii<pOrWc->nTerm; ii++){
WhereTerm *pOrTerm = &pOrWc->a[ii];
if( pOrTerm->leftCursor==iCur || pOrTerm->eOperator==WO_AND ){
WhereInfo *pSubWInfo; /* Info for single OR-term scan */
+ Expr *pOrExpr = pOrTerm->pExpr;
+ if( pAndExpr ){
+ pAndExpr->pLeft = pOrExpr;
+ pOrExpr = pAndExpr;
+ }
/* Loop through table entries that match term pOrTerm. */
- pSubWInfo = sqlite3WhereBegin(pParse, pOrTab, pOrTerm->pExpr, 0,
- WHERE_OMIT_OPEN | WHERE_OMIT_CLOSE |
+ pSubWInfo = sqlite3WhereBegin(pParse, pOrTab, pOrExpr, 0, 0,
+ WHERE_OMIT_OPEN_CLOSE | WHERE_AND_ONLY |
WHERE_FORCE_TABLE | WHERE_ONETABLE_ONLY);
if( pSubWInfo ){
explainOneScan(
@@ -99369,6 +106730,7 @@
}
}
}
+ sqlite3DbFree(pParse->db, pAndExpr);
sqlite3VdbeChangeP1(v, iRetInit, sqlite3VdbeCurrentAddr(v));
sqlite3VdbeAddOp2(v, OP_Goto, 0, pLevel->addrBrk);
sqlite3VdbeResolveLabel(v, iLoopBody);
@@ -99400,7 +106762,6 @@
** the use of indices become tests that are evaluated against each row of
** the relevant input tables.
*/
- k = 0;
for(pTerm=pWC->a, j=pWC->nTerm; j>0; j--, pTerm++){
Expr *pE;
testcase( pTerm->wtFlags & TERM_VIRTUAL ); /* IMP: R-30575-11662 */
@@ -99418,7 +106779,6 @@
continue;
}
sqlite3ExprIfFalse(pParse, pE, addrCont, SQLITE_JUMPIFNULL);
- k = 1;
pTerm->wtFlags |= TERM_CODED;
}
@@ -99583,6 +106943,7 @@
SrcList *pTabList, /* A list of all tables to be scanned */
Expr *pWhere, /* The WHERE clause */
ExprList **ppOrderBy, /* An ORDER BY clause, or NULL */
+ ExprList *pDistinct, /* The select-list for DISTINCT queries - or NULL */
u16 wctrlFlags /* One of the WHERE_* flags defined in sqliteInt.h */
){
int i; /* Loop counter */
@@ -99643,11 +107004,15 @@
pWInfo->savedNQueryLoop = pParse->nQueryLoop;
pMaskSet = (WhereMaskSet*)&pWC[1];
+ /* Disable the DISTINCT optimization if SQLITE_DistinctOpt is set via
+ ** sqlite3_test_ctrl(SQLITE_TESTCTRL_OPTIMIZATIONS,...) */
+ if( db->flags & SQLITE_DistinctOpt ) pDistinct = 0;
+
/* Split the WHERE clause into separate subexpressions where each
** subexpression is separated by an AND operator.
*/
initMaskSet(pMaskSet);
- whereClauseInit(pWC, pParse, pMaskSet);
+ whereClauseInit(pWC, pParse, pMaskSet, wctrlFlags);
sqlite3ExprCodeConstants(pParse, pWhere);
whereSplit(pWC, pWhere, TK_AND); /* IMP: R-15842-53296 */
@@ -99710,6 +107075,15 @@
goto whereBeginError;
}
+ /* Check if the DISTINCT qualifier, if there is one, is redundant.
+ ** If it is, then set pDistinct to NULL and WhereInfo.eDistinct to
+ ** WHERE_DISTINCT_UNIQUE to tell the caller to ignore the DISTINCT.
+ */
+ if( pDistinct && isDistinctRedundant(pParse, pTabList, pWC, pDistinct) ){
+ pDistinct = 0;
+ pWInfo->eDistinct = WHERE_DISTINCT_UNIQUE;
+ }
+
/* Chose the best index to use for each table in the FROM clause.
**
** This loop fills in the following fields:
@@ -99726,8 +107100,6 @@
** clause.
*/
notReady = ~(Bitmask)0;
- pTabItem = pTabList->a;
- pLevel = pWInfo->a;
andFlags = ~0;
WHERETRACE(("*** Optimizer Start ***\n"));
for(i=iFrom=0, pLevel=pWInfo->a; i<nTabList; i++, pLevel++){
@@ -99795,6 +107167,7 @@
int doNotReorder; /* True if this table should not be reordered */
WhereCost sCost; /* Cost information from best[Virtual]Index() */
ExprList *pOrderBy; /* ORDER BY clause for index to optimize */
+ ExprList *pDist; /* DISTINCT clause for index to optimize */
doNotReorder = (pTabItem->jointype & (JT_LEFT|JT_CROSS))!=0;
if( j!=iFrom && doNotReorder ) break;
@@ -99805,6 +107178,7 @@
}
mask = (isOptimal ? m : notReady);
pOrderBy = ((i==0 && ppOrderBy )?*ppOrderBy:0);
+ pDist = (i==0 ? pDistinct : 0);
if( pTabItem->pIndex==0 ) nUnconstrained++;
WHERETRACE(("=== trying table %d with isOptimal=%d ===\n",
@@ -99819,7 +107193,7 @@
#endif
{
bestBtreeIndex(pParse, pWC, pTabItem, mask, notReady, pOrderBy,
- &sCost);
+ pDist, &sCost);
}
assert( isOptimal || (sCost.used¬Ready)==0 );
@@ -99838,8 +107212,8 @@
** (1) The table must not depend on other tables that have not
** yet run.
**
- ** (2) A full-table-scan plan cannot supercede another plan unless
- ** it is an "optimal" plan as defined above.
+ ** (2) A full-table-scan plan cannot supercede indexed plan unless
+ ** the full-table-scan is an "optimal" plan as defined above.
**
** (3) All tables have an INDEXED BY clause or this table lacks an
** INDEXED BY clause or this table uses the specific
@@ -99855,6 +107229,7 @@
*/
if( (sCost.used¬Ready)==0 /* (1) */
&& (bestJ<0 || (notIndexed&m)!=0 /* (2) */
+ || (bestPlan.plan.wsFlags & WHERE_NOT_FULLSCAN)==0
|| (sCost.plan.wsFlags & WHERE_NOT_FULLSCAN)!=0)
&& (nUnconstrained==0 || pTabItem->pIndex==0 /* (3) */
|| NEVER((sCost.plan.wsFlags & WHERE_NOT_FULLSCAN)!=0))
@@ -99876,9 +107251,14 @@
WHERETRACE(("*** Optimizer selects table %d for loop %d"
" with cost=%g and nRow=%g\n",
bestJ, pLevel-pWInfo->a, bestPlan.rCost, bestPlan.plan.nRow));
- if( (bestPlan.plan.wsFlags & WHERE_ORDERBY)!=0 ){
+ /* The ALWAYS() that follows was added to hush up clang scan-build */
+ if( (bestPlan.plan.wsFlags & WHERE_ORDERBY)!=0 && ALWAYS(ppOrderBy) ){
*ppOrderBy = 0;
}
+ if( (bestPlan.plan.wsFlags & WHERE_DISTINCT)!=0 ){
+ assert( pWInfo->eDistinct==0 );
+ pWInfo->eDistinct = WHERE_DISTINCT_ORDERED;
+ }
andFlags &= bestPlan.plan.wsFlags;
pLevel->plan = bestPlan.plan;
testcase( bestPlan.plan.wsFlags & WHERE_INDEXED );
@@ -99961,7 +107341,7 @@
}else
#endif
if( (pLevel->plan.wsFlags & WHERE_IDX_ONLY)==0
- && (wctrlFlags & WHERE_OMIT_OPEN)==0 ){
+ && (wctrlFlags & WHERE_OMIT_OPEN_CLOSE)==0 ){
int op = pWInfo->okOnePass ? OP_OpenWrite : OP_OpenRead;
sqlite3OpenTable(pParse, pTabItem->iCursor, iDb, pTab, op);
testcase( pTab->nCol==BMS-1 );
@@ -100006,7 +107386,7 @@
for(i=0; i<nTabList; i++){
pLevel = &pWInfo->a[i];
explainOneScan(pParse, pTabList, pLevel, i, pLevel->iFrom, wctrlFlags);
- notReady = codeOneLoopStart(pWInfo, i, wctrlFlags, notReady);
+ notReady = codeOneLoopStart(pWInfo, i, wctrlFlags, notReady, pWhere);
pWInfo->iContinue = pLevel->addrCont;
}
@@ -100141,7 +107521,7 @@
assert( pTab!=0 );
if( (pTab->tabFlags & TF_Ephemeral)==0
&& pTab->pSelect==0
- && (pWInfo->wctrlFlags & WHERE_OMIT_CLOSE)==0
+ && (pWInfo->wctrlFlags & WHERE_OMIT_OPEN_CLOSE)==0
){
int ws = pLevel->plan.wsFlags;
if( !pWInfo->okOnePass && (ws & WHERE_IDX_ONLY)==0 ){
@@ -100213,6 +107593,7 @@
*/
/* First off, code is included that follows the "include" declaration
** in the input grammar file. */
+/* #include <stdio.h> */
/*
@@ -101073,6 +108454,7 @@
typedef struct yyParser yyParser;
#ifndef NDEBUG
+/* #include <stdio.h> */
static FILE *yyTraceFILE = 0;
static char *yyTracePrompt = 0;
#endif /* NDEBUG */
@@ -101836,7 +109218,6 @@
UNUSED_PARAMETER(yypMinor); /* Silence some compiler warnings */
sqlite3ErrorMsg(pParse, "parser stack overflow");
- pParse->parseError = 1;
sqlite3ParserARG_STORE; /* Suppress warning about unused %extra_argument var */
}
@@ -102559,6 +109940,9 @@
{
SelectDest dest = {SRT_Output, 0, 0, 0, 0};
sqlite3Select(pParse, yymsp[0].minor.yy387, &dest);
+ sqlite3ExplainBegin(pParse->pVdbe);
+ sqlite3ExplainSelect(pParse->pVdbe, yymsp[0].minor.yy387);
+ sqlite3ExplainFinish(pParse->pVdbe);
sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy387);
}
break;
@@ -103437,7 +110821,6 @@
UNUSED_PARAMETER(yymajor); /* Silence some compiler warnings */
assert( TOKEN.z[0] ); /* The tokenizer always gives us a token */
sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", &TOKEN);
- pParse->parseError = 1;
sqlite3ParserARG_STORE; /* Suppress warning about unused %extra_argument variable */
}
@@ -103486,7 +110869,9 @@
){
YYMINORTYPE yyminorunion;
int yyact; /* The parser action. */
+#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY)
int yyendofinput; /* True if we are at the end of input */
+#endif
#ifdef YYERRORSYMBOL
int yyerrorhit = 0; /* True if yymajor has invoked an error */
#endif
@@ -103509,7 +110894,9 @@
yypParser->yystack[0].major = 0;
}
yyminorunion.yy0 = yyminor;
+#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY)
yyendofinput = (yymajor==0);
+#endif
sqlite3ParserARG_STORE;
#ifndef NDEBUG
@@ -103521,7 +110908,6 @@
do{
yyact = yy_find_shift_action(yypParser,(YYCODETYPE)yymajor);
if( yyact<YYNSTATE ){
- assert( !yyendofinput ); /* Impossible to shift the $ token */
yy_shift(yypParser,yyact,yymajor,&yyminorunion);
yypParser->yyerrcnt--;
yymajor = YYNOCODE;
@@ -103648,6 +111034,7 @@
** individual tokens and sends those tokens one-by-one over to the
** parser for analysis.
*/
+/* #include <stdlib.h> */
/*
** The charMap() macro maps alphabetic characters into their
@@ -104028,7 +111415,7 @@
}
case '-': {
if( z[1]=='-' ){
- /* IMP: R-15891-05542 -- syntax diagram for comments */
+ /* IMP: R-50417-27976 -- syntax diagram for comments */
for(i=2; (c=z[i])!=0 && c!='\n'; i++){}
*tokenType = TK_SPACE; /* IMP: R-22934-25134 */
return i;
@@ -104061,7 +111448,7 @@
*tokenType = TK_SLASH;
return 1;
}
- /* IMP: R-15891-05542 -- syntax diagram for comments */
+ /* IMP: R-50417-27976 -- syntax diagram for comments */
for(i=3, c=z[2]; (c!='*' || z[i]!='/') && (c=z[i])!=0; i++){}
if( c ) i++;
*tokenType = TK_SPACE; /* IMP: R-22934-25134 */
@@ -104258,13 +111645,12 @@
testcase( z[0]=='x' ); testcase( z[0]=='X' );
if( z[1]=='\'' ){
*tokenType = TK_BLOB;
- for(i=2; (c=z[i])!=0 && c!='\''; i++){
- if( !sqlite3Isxdigit(c) ){
- *tokenType = TK_ILLEGAL;
- }
+ for(i=2; sqlite3Isxdigit(z[i]); i++){}
+ if( z[i]!='\'' || i%2 ){
+ *tokenType = TK_ILLEGAL;
+ while( z[i] && z[i]!='\'' ){ i++; }
}
- if( i%2 || !c ) *tokenType = TK_ILLEGAL;
- if( c ) i++;
+ if( z[i] ) i++;
return i;
}
/* Otherwise fall through to the next case */
@@ -104317,9 +111703,8 @@
assert( pParse->pNewTable==0 );
assert( pParse->pNewTrigger==0 );
assert( pParse->nVar==0 );
- assert( pParse->nVarExpr==0 );
- assert( pParse->nVarExprAlloc==0 );
- assert( pParse->apVarExpr==0 );
+ assert( pParse->nzVar==0 );
+ assert( pParse->azVar==0 );
enableLookaside = db->lookaside.bEnabled;
if( db->lookaside.pStart ) db->lookaside.bEnabled = 1;
while( !db->mallocFailed && zSql[i]!=0 ){
@@ -104413,7 +111798,8 @@
}
sqlite3DeleteTrigger(db, pParse->pNewTrigger);
- sqlite3DbFree(db, pParse->apVarExpr);
+ for(i=pParse->nzVar-1; i>=0; i--) sqlite3DbFree(db, pParse->azVar[i]);
+ sqlite3DbFree(db, pParse->azVar);
sqlite3DbFree(db, pParse->aAlias);
while( pParse->pAinc ){
AutoincInfo *p = pParse->pAinc;
@@ -104856,8 +112242,8 @@
*/
SQLITE_API int sqlite3_libversion_number(void){ return SQLITE_VERSION_NUMBER; }
-/* IMPLEMENTATION-OF: R-54823-41343 The sqlite3_threadsafe() function returns
-** zero if and only if SQLite was compiled mutexing code omitted due to
+/* IMPLEMENTATION-OF: R-20790-14025 The sqlite3_threadsafe() function returns
+** zero if and only if SQLite was compiled with mutexing code omitted due to
** the SQLITE_THREADSAFE compile-time option being set to 0.
*/
SQLITE_API int sqlite3_threadsafe(void){ return SQLITE_THREADSAFE; }
@@ -104913,7 +112299,7 @@
** without blocking.
*/
SQLITE_API int sqlite3_initialize(void){
- sqlite3_mutex *pMaster; /* The main static mutex */
+ MUTEX_LOGIC( sqlite3_mutex *pMaster; ) /* The main static mutex */
int rc; /* Result code */
#ifdef SQLITE_OMIT_WSD
@@ -104947,7 +112333,7 @@
** malloc subsystem - this implies that the allocation of a static
** mutex must not require support from the malloc subsystem.
*/
- pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+ MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
sqlite3_mutex_enter(pMaster);
sqlite3GlobalConfig.isMutexInit = 1;
if( !sqlite3GlobalConfig.isMallocInit ){
@@ -105041,6 +112427,16 @@
#endif
#endif
+ /* Do extra initialization steps requested by the SQLITE_EXTRA_INIT
+ ** compile-time option.
+ */
+#ifdef SQLITE_EXTRA_INIT
+ if( rc==SQLITE_OK && sqlite3GlobalConfig.isInit ){
+ int SQLITE_EXTRA_INIT(const char*);
+ rc = SQLITE_EXTRA_INIT(0);
+ }
+#endif
+
return rc;
}
@@ -105054,6 +112450,10 @@
*/
SQLITE_API int sqlite3_shutdown(void){
if( sqlite3GlobalConfig.isInit ){
+#ifdef SQLITE_EXTRA_SHUTDOWN
+ void SQLITE_EXTRA_SHUTDOWN(void);
+ SQLITE_EXTRA_SHUTDOWN();
+#endif
sqlite3_os_end();
sqlite3_reset_auto_extension();
sqlite3GlobalConfig.isInit = 0;
@@ -105162,16 +112562,25 @@
}
case SQLITE_CONFIG_PCACHE: {
- /* Specify an alternative page cache implementation */
- sqlite3GlobalConfig.pcache = *va_arg(ap, sqlite3_pcache_methods*);
+ /* no-op */
+ break;
+ }
+ case SQLITE_CONFIG_GETPCACHE: {
+ /* now an error */
+ rc = SQLITE_ERROR;
break;
}
- case SQLITE_CONFIG_GETPCACHE: {
- if( sqlite3GlobalConfig.pcache.xInit==0 ){
+ case SQLITE_CONFIG_PCACHE2: {
+ /* Specify an alternative page cache implementation */
+ sqlite3GlobalConfig.pcache2 = *va_arg(ap, sqlite3_pcache_methods2*);
+ break;
+ }
+ case SQLITE_CONFIG_GETPCACHE2: {
+ if( sqlite3GlobalConfig.pcache2.xInit==0 ){
sqlite3PCacheSetDefault();
}
- *va_arg(ap, sqlite3_pcache_methods*) = sqlite3GlobalConfig.pcache;
+ *va_arg(ap, sqlite3_pcache_methods2*) = sqlite3GlobalConfig.pcache2;
break;
}
@@ -105182,6 +112591,13 @@
sqlite3GlobalConfig.nHeap = va_arg(ap, int);
sqlite3GlobalConfig.mnReq = va_arg(ap, int);
+ if( sqlite3GlobalConfig.mnReq<1 ){
+ sqlite3GlobalConfig.mnReq = 1;
+ }else if( sqlite3GlobalConfig.mnReq>(1<<12) ){
+ /* cap min request size at 2^12 */
+ sqlite3GlobalConfig.mnReq = (1<<12);
+ }
+
if( sqlite3GlobalConfig.pHeap==0 ){
/* If the heap pointer is NULL, then restore the malloc implementation
** back to NULL pointers too. This will cause the malloc to go
@@ -105226,6 +112642,11 @@
break;
}
+ case SQLITE_CONFIG_URI: {
+ sqlite3GlobalConfig.bOpenUri = va_arg(ap, int);
+ break;
+ }
+
default: {
rc = SQLITE_ERROR;
break;
@@ -105258,21 +112679,21 @@
if( db->lookaside.bMalloced ){
sqlite3_free(db->lookaside.pStart);
}
- /* The size of a lookaside slot needs to be larger than a pointer
- ** to be useful.
+ /* The size of a lookaside slot after ROUNDDOWN8 needs to be larger
+ ** than a pointer to be useful.
*/
+ sz = ROUNDDOWN8(sz); /* IMP: R-33038-09382 */
if( sz<=(int)sizeof(LookasideSlot*) ) sz = 0;
if( cnt<0 ) cnt = 0;
if( sz==0 || cnt==0 ){
sz = 0;
pStart = 0;
}else if( pBuf==0 ){
- sz = ROUNDDOWN8(sz); /* IMP: R-33038-09382 */
sqlite3BeginBenignMalloc();
pStart = sqlite3Malloc( sz*cnt ); /* IMP: R-61949-35727 */
sqlite3EndBenignMalloc();
+ if( pStart ) cnt = sqlite3MallocSize(pStart)/sz;
}else{
- sz = ROUNDDOWN8(sz); /* IMP: R-33038-09382 */
pStart = pBuf;
}
db->lookaside.pStart = pStart;
@@ -105307,6 +112728,26 @@
}
/*
+** Free up as much memory as we can from the given database
+** connection.
+*/
+SQLITE_API int sqlite3_db_release_memory(sqlite3 *db){
+ int i;
+ sqlite3_mutex_enter(db->mutex);
+ sqlite3BtreeEnterAll(db);
+ for(i=0; i<db->nDb; i++){
+ Btree *pBt = db->aDb[i].pBt;
+ if( pBt ){
+ Pager *pPager = sqlite3BtreePager(pBt);
+ sqlite3PagerShrink(pPager);
+ }
+ }
+ sqlite3BtreeLeaveAll(db);
+ sqlite3_mutex_leave(db->mutex);
+ return SQLITE_OK;
+}
+
+/*
** Configuration settings for an individual database connection
*/
SQLITE_API int sqlite3_db_config(sqlite3 *db, int op, ...){
@@ -105315,14 +112756,42 @@
va_start(ap, op);
switch( op ){
case SQLITE_DBCONFIG_LOOKASIDE: {
- void *pBuf = va_arg(ap, void*); /* IMP: R-21112-12275 */
+ void *pBuf = va_arg(ap, void*); /* IMP: R-26835-10964 */
int sz = va_arg(ap, int); /* IMP: R-47871-25994 */
int cnt = va_arg(ap, int); /* IMP: R-04460-53386 */
rc = setupLookaside(db, pBuf, sz, cnt);
break;
}
default: {
+ static const struct {
+ int op; /* The opcode */
+ u32 mask; /* Mask of the bit in sqlite3.flags to set/clear */
+ } aFlagOp[] = {
+ { SQLITE_DBCONFIG_ENABLE_FKEY, SQLITE_ForeignKeys },
+ { SQLITE_DBCONFIG_ENABLE_TRIGGER, SQLITE_EnableTrigger },
+ };
+ unsigned int i;
rc = SQLITE_ERROR; /* IMP: R-42790-23372 */
+ for(i=0; i<ArraySize(aFlagOp); i++){
+ if( aFlagOp[i].op==op ){
+ int onoff = va_arg(ap, int);
+ int *pRes = va_arg(ap, int*);
+ int oldFlags = db->flags;
+ if( onoff>0 ){
+ db->flags |= aFlagOp[i].mask;
+ }else if( onoff==0 ){
+ db->flags &= ~aFlagOp[i].mask;
+ }
+ if( oldFlags!=db->flags ){
+ sqlite3ExpirePreparedStatements(db);
+ }
+ if( pRes ){
+ *pRes = (db->flags & aFlagOp[i].mask)!=0;
+ }
+ rc = SQLITE_OK;
+ break;
+ }
+ }
break;
}
}
@@ -105459,7 +112928,8 @@
}
sqlite3_mutex_enter(db->mutex);
- sqlite3ResetInternalSchema(db, 0);
+ /* Force xDestroy calls on all virtual tables */
+ sqlite3ResetInternalSchema(db, -1);
/* If a transaction is open, the ResetInternalSchema() call above
** will not have called the xDisconnect() method on any virtual
@@ -105502,7 +112972,7 @@
}
}
}
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
/* Tell the code in notify.c that the connection no longer holds any
** locks and does not require any further unlock-notify callbacks.
@@ -105593,7 +113063,7 @@
if( db->flags&SQLITE_InternChanges ){
sqlite3ExpirePreparedStatements(db);
- sqlite3ResetInternalSchema(db, 0);
+ sqlite3ResetInternalSchema(db, -1);
}
/* Any deferred constraint violations have now been resolved. */
@@ -105623,7 +113093,7 @@
/* SQLITE_INTERRUPT */ "interrupted",
/* SQLITE_IOERR */ "disk I/O error",
/* SQLITE_CORRUPT */ "database disk image is malformed",
- /* SQLITE_NOTFOUND */ 0,
+ /* SQLITE_NOTFOUND */ "unknown operation",
/* SQLITE_FULL */ "database or disk is full",
/* SQLITE_CANTOPEN */ "unable to open database file",
/* SQLITE_PROTOCOL */ "locking protocol",
@@ -105662,7 +113132,7 @@
{ 1, 2, 5, 10, 15, 20, 25, 25, 25, 50, 50, 100 };
static const u8 totals[] =
{ 0, 1, 3, 8, 18, 33, 53, 78, 103, 128, 178, 228 };
-# define NDELAY (sizeof(delays)/sizeof(delays[0]))
+# define NDELAY ArraySize(delays)
sqlite3 *db = (sqlite3 *)ptr;
int timeout = db->busyTimeout;
int delay, prior;
@@ -105970,13 +113440,13 @@
int nArg
){
int nName = sqlite3Strlen30(zName);
- int rc;
+ int rc = SQLITE_OK;
sqlite3_mutex_enter(db->mutex);
if( sqlite3FindFunction(db, zName, nName, nArg, SQLITE_UTF8, 0)==0 ){
- sqlite3CreateFunc(db, zName, nArg, SQLITE_UTF8,
- 0, sqlite3InvalidFunction, 0, 0, 0);
+ rc = sqlite3CreateFunc(db, zName, nArg, SQLITE_UTF8,
+ 0, sqlite3InvalidFunction, 0, 0, 0);
}
- rc = sqlite3ApiExit(db, SQLITE_OK);
+ rc = sqlite3ApiExit(db, rc);
sqlite3_mutex_leave(db->mutex);
return rc;
}
@@ -106147,19 +113617,33 @@
#endif
}
-
/*
-** Checkpoint database zDb. If zDb is NULL, or if the buffer zDb points
-** to contains a zero-length string, all attached databases are
-** checkpointed.
+** Checkpoint database zDb.
*/
-SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb){
+SQLITE_API int sqlite3_wal_checkpoint_v2(
+ sqlite3 *db, /* Database handle */
+ const char *zDb, /* Name of attached database (or NULL) */
+ int eMode, /* SQLITE_CHECKPOINT_* value */
+ int *pnLog, /* OUT: Size of WAL log in frames */
+ int *pnCkpt /* OUT: Total number of frames checkpointed */
+){
#ifdef SQLITE_OMIT_WAL
return SQLITE_OK;
#else
int rc; /* Return code */
int iDb = SQLITE_MAX_ATTACHED; /* sqlite3.aDb[] index of db to checkpoint */
+ /* Initialize the output variables to -1 in case an error occurs. */
+ if( pnLog ) *pnLog = -1;
+ if( pnCkpt ) *pnCkpt = -1;
+
+ assert( SQLITE_CHECKPOINT_FULL>SQLITE_CHECKPOINT_PASSIVE );
+ assert( SQLITE_CHECKPOINT_FULL<SQLITE_CHECKPOINT_RESTART );
+ assert( SQLITE_CHECKPOINT_PASSIVE+2==SQLITE_CHECKPOINT_RESTART );
+ if( eMode<SQLITE_CHECKPOINT_PASSIVE || eMode>SQLITE_CHECKPOINT_RESTART ){
+ return SQLITE_MISUSE;
+ }
+
sqlite3_mutex_enter(db->mutex);
if( zDb && zDb[0] ){
iDb = sqlite3FindDbName(db, zDb);
@@ -106168,7 +113652,7 @@
rc = SQLITE_ERROR;
sqlite3Error(db, SQLITE_ERROR, "unknown database: %s", zDb);
}else{
- rc = sqlite3Checkpoint(db, iDb);
+ rc = sqlite3Checkpoint(db, iDb, eMode, pnLog, pnCkpt);
sqlite3Error(db, rc, 0);
}
rc = sqlite3ApiExit(db, rc);
@@ -106177,6 +113661,16 @@
#endif
}
+
+/*
+** Checkpoint database zDb. If zDb is NULL, or if the buffer zDb points
+** to contains a zero-length string, all attached databases are
+** checkpointed.
+*/
+SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb){
+ return sqlite3_wal_checkpoint_v2(db, zDb, SQLITE_CHECKPOINT_PASSIVE, 0, 0);
+}
+
#ifndef SQLITE_OMIT_WAL
/*
** Run a checkpoint on database iDb. This is a no-op if database iDb is
@@ -106194,20 +113688,31 @@
** If iDb is passed SQLITE_MAX_ATTACHED, then all attached databases are
** checkpointed. If an error is encountered it is returned immediately -
** no attempt is made to checkpoint any remaining databases.
+**
+** Parameter eMode is one of SQLITE_CHECKPOINT_PASSIVE, FULL or RESTART.
*/
-SQLITE_PRIVATE int sqlite3Checkpoint(sqlite3 *db, int iDb){
+SQLITE_PRIVATE int sqlite3Checkpoint(sqlite3 *db, int iDb, int eMode, int *pnLog, int *pnCkpt){
int rc = SQLITE_OK; /* Return code */
int i; /* Used to iterate through attached dbs */
+ int bBusy = 0; /* True if SQLITE_BUSY has been encountered */
assert( sqlite3_mutex_held(db->mutex) );
+ assert( !pnLog || *pnLog==-1 );
+ assert( !pnCkpt || *pnCkpt==-1 );
for(i=0; i<db->nDb && rc==SQLITE_OK; i++){
if( i==iDb || iDb==SQLITE_MAX_ATTACHED ){
- rc = sqlite3BtreeCheckpoint(db->aDb[i].pBt);
+ rc = sqlite3BtreeCheckpoint(db->aDb[i].pBt, eMode, pnLog, pnCkpt);
+ pnLog = 0;
+ pnCkpt = 0;
+ if( rc==SQLITE_BUSY ){
+ bBusy = 1;
+ rc = SQLITE_OK;
+ }
}
}
- return rc;
+ return (rc==SQLITE_OK && bBusy) ? SQLITE_BUSY : rc;
}
#endif /* SQLITE_OMIT_WAL */
@@ -106349,7 +113854,6 @@
sqlite3* db,
const char *zName,
u8 enc,
- u8 collType,
void* pCtx,
int(*xCompare)(void*,int,const void*,int,const void*),
void(*xDel)(void*)
@@ -106414,7 +113918,6 @@
pColl->pUser = pCtx;
pColl->xDel = xDel;
pColl->enc = (u8)(enc2 | (enc & SQLITE_UTF16_ALIGNED));
- pColl->type = collType;
sqlite3Error(db, SQLITE_OK, 0);
return SQLITE_OK;
}
@@ -106460,8 +113963,8 @@
#if SQLITE_MAX_FUNCTION_ARG<0 || SQLITE_MAX_FUNCTION_ARG>1000
# error SQLITE_MAX_FUNCTION_ARG must be between 0 and 1000
#endif
-#if SQLITE_MAX_ATTACHED<0 || SQLITE_MAX_ATTACHED>30
-# error SQLITE_MAX_ATTACHED must be between 0 and 30
+#if SQLITE_MAX_ATTACHED<0 || SQLITE_MAX_ATTACHED>62
+# error SQLITE_MAX_ATTACHED must be between 0 and 62
#endif
#if SQLITE_MAX_LIKE_PATTERN_LENGTH<1
# error SQLITE_MAX_LIKE_PATTERN_LENGTH must be at least 1
@@ -106522,6 +114025,236 @@
}
/*
+** This function is used to parse both URIs and non-URI filenames passed by the
+** user to API functions sqlite3_open() or sqlite3_open_v2(), and for database
+** URIs specified as part of ATTACH statements.
+**
+** The first argument to this function is the name of the VFS to use (or
+** a NULL to signify the default VFS) if the URI does not contain a "vfs=xxx"
+** query parameter. The second argument contains the URI (or non-URI filename)
+** itself. When this function is called the *pFlags variable should contain
+** the default flags to open the database handle with. The value stored in
+** *pFlags may be updated before returning if the URI filename contains
+** "cache=xxx" or "mode=xxx" query parameters.
+**
+** If successful, SQLITE_OK is returned. In this case *ppVfs is set to point to
+** the VFS that should be used to open the database file. *pzFile is set to
+** point to a buffer containing the name of the file to open. It is the
+** responsibility of the caller to eventually call sqlite3_free() to release
+** this buffer.
+**
+** If an error occurs, then an SQLite error code is returned and *pzErrMsg
+** may be set to point to a buffer containing an English language error
+** message. It is the responsibility of the caller to eventually release
+** this buffer by calling sqlite3_free().
+*/
+SQLITE_PRIVATE int sqlite3ParseUri(
+ const char *zDefaultVfs, /* VFS to use if no "vfs=xxx" query option */
+ const char *zUri, /* Nul-terminated URI to parse */
+ unsigned int *pFlags, /* IN/OUT: SQLITE_OPEN_XXX flags */
+ sqlite3_vfs **ppVfs, /* OUT: VFS to use */
+ char **pzFile, /* OUT: Filename component of URI */
+ char **pzErrMsg /* OUT: Error message (if rc!=SQLITE_OK) */
+){
+ int rc = SQLITE_OK;
+ unsigned int flags = *pFlags;
+ const char *zVfs = zDefaultVfs;
+ char *zFile;
+ char c;
+ int nUri = sqlite3Strlen30(zUri);
+
+ assert( *pzErrMsg==0 );
+
+ if( ((flags & SQLITE_OPEN_URI) || sqlite3GlobalConfig.bOpenUri)
+ && nUri>=5 && memcmp(zUri, "file:", 5)==0
+ ){
+ char *zOpt;
+ int eState; /* Parser state when parsing URI */
+ int iIn; /* Input character index */
+ int iOut = 0; /* Output character index */
+ int nByte = nUri+2; /* Bytes of space to allocate */
+
+ /* Make sure the SQLITE_OPEN_URI flag is set to indicate to the VFS xOpen
+ ** method that there may be extra parameters following the file-name. */
+ flags |= SQLITE_OPEN_URI;
+
+ for(iIn=0; iIn<nUri; iIn++) nByte += (zUri[iIn]=='&');
+ zFile = sqlite3_malloc(nByte);
+ if( !zFile ) return SQLITE_NOMEM;
+
+ /* Discard the scheme and authority segments of the URI. */
+ if( zUri[5]=='/' && zUri[6]=='/' ){
+ iIn = 7;
+ while( zUri[iIn] && zUri[iIn]!='/' ) iIn++;
+
+ if( iIn!=7 && (iIn!=16 || memcmp("localhost", &zUri[7], 9)) ){
+ *pzErrMsg = sqlite3_mprintf("invalid uri authority: %.*s",
+ iIn-7, &zUri[7]);
+ rc = SQLITE_ERROR;
+ goto parse_uri_out;
+ }
+ }else{
+ iIn = 5;
+ }
+
+ /* Copy the filename and any query parameters into the zFile buffer.
+ ** Decode %HH escape codes along the way.
+ **
+ ** Within this loop, variable eState may be set to 0, 1 or 2, depending
+ ** on the parsing context. As follows:
+ **
+ ** 0: Parsing file-name.
+ ** 1: Parsing name section of a name=value query parameter.
+ ** 2: Parsing value section of a name=value query parameter.
+ */
+ eState = 0;
+ while( (c = zUri[iIn])!=0 && c!='#' ){
+ iIn++;
+ if( c=='%'
+ && sqlite3Isxdigit(zUri[iIn])
+ && sqlite3Isxdigit(zUri[iIn+1])
+ ){
+ int octet = (sqlite3HexToInt(zUri[iIn++]) << 4);
+ octet += sqlite3HexToInt(zUri[iIn++]);
+
+ assert( octet>=0 && octet<256 );
+ if( octet==0 ){
+ /* This branch is taken when "%00" appears within the URI. In this
+ ** case we ignore all text in the remainder of the path, name or
+ ** value currently being parsed. So ignore the current character
+ ** and skip to the next "?", "=" or "&", as appropriate. */
+ while( (c = zUri[iIn])!=0 && c!='#'
+ && (eState!=0 || c!='?')
+ && (eState!=1 || (c!='=' && c!='&'))
+ && (eState!=2 || c!='&')
+ ){
+ iIn++;
+ }
+ continue;
+ }
+ c = octet;
+ }else if( eState==1 && (c=='&' || c=='=') ){
+ if( zFile[iOut-1]==0 ){
+ /* An empty option name. Ignore this option altogether. */
+ while( zUri[iIn] && zUri[iIn]!='#' && zUri[iIn-1]!='&' ) iIn++;
+ continue;
+ }
+ if( c=='&' ){
+ zFile[iOut++] = '\0';
+ }else{
+ eState = 2;
+ }
+ c = 0;
+ }else if( (eState==0 && c=='?') || (eState==2 && c=='&') ){
+ c = 0;
+ eState = 1;
+ }
+ zFile[iOut++] = c;
+ }
+ if( eState==1 ) zFile[iOut++] = '\0';
+ zFile[iOut++] = '\0';
+ zFile[iOut++] = '\0';
+
+ /* Check if there were any options specified that should be interpreted
+ ** here. Options that are interpreted here include "vfs" and those that
+ ** correspond to flags that may be passed to the sqlite3_open_v2()
+ ** method. */
+ zOpt = &zFile[sqlite3Strlen30(zFile)+1];
+ while( zOpt[0] ){
+ int nOpt = sqlite3Strlen30(zOpt);
+ char *zVal = &zOpt[nOpt+1];
+ int nVal = sqlite3Strlen30(zVal);
+
+ if( nOpt==3 && memcmp("vfs", zOpt, 3)==0 ){
+ zVfs = zVal;
+ }else{
+ struct OpenMode {
+ const char *z;
+ int mode;
+ } *aMode = 0;
+ char *zModeType = 0;
+ int mask = 0;
+ int limit = 0;
+
+ if( nOpt==5 && memcmp("cache", zOpt, 5)==0 ){
+ static struct OpenMode aCacheMode[] = {
+ { "shared", SQLITE_OPEN_SHAREDCACHE },
+ { "private", SQLITE_OPEN_PRIVATECACHE },
+ { 0, 0 }
+ };
+
+ mask = SQLITE_OPEN_SHAREDCACHE|SQLITE_OPEN_PRIVATECACHE;
+ aMode = aCacheMode;
+ limit = mask;
+ zModeType = "cache";
+ }
+ if( nOpt==4 && memcmp("mode", zOpt, 4)==0 ){
+ static struct OpenMode aOpenMode[] = {
+ { "ro", SQLITE_OPEN_READONLY },
+ { "rw", SQLITE_OPEN_READWRITE },
+ { "rwc", SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE },
+ { 0, 0 }
+ };
+
+ mask = SQLITE_OPEN_READONLY|SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE;
+ aMode = aOpenMode;
+ limit = mask & flags;
+ zModeType = "access";
+ }
+
+ if( aMode ){
+ int i;
+ int mode = 0;
+ for(i=0; aMode[i].z; i++){
+ const char *z = aMode[i].z;
+ if( nVal==sqlite3Strlen30(z) && 0==memcmp(zVal, z, nVal) ){
+ mode = aMode[i].mode;
+ break;
+ }
+ }
+ if( mode==0 ){
+ *pzErrMsg = sqlite3_mprintf("no such %s mode: %s", zModeType, zVal);
+ rc = SQLITE_ERROR;
+ goto parse_uri_out;
+ }
+ if( mode>limit ){
+ *pzErrMsg = sqlite3_mprintf("%s mode not allowed: %s",
+ zModeType, zVal);
+ rc = SQLITE_PERM;
+ goto parse_uri_out;
+ }
+ flags = (flags & ~mask) | mode;
+ }
+ }
+
+ zOpt = &zVal[nVal+1];
+ }
+
+ }else{
+ zFile = sqlite3_malloc(nUri+2);
+ if( !zFile ) return SQLITE_NOMEM;
+ memcpy(zFile, zUri, nUri);
+ zFile[nUri] = '\0';
+ zFile[nUri+1] = '\0';
+ }
+
+ *ppVfs = sqlite3_vfs_find(zVfs);
+ if( *ppVfs==0 ){
+ *pzErrMsg = sqlite3_mprintf("no such vfs: %s", zVfs);
+ rc = SQLITE_ERROR;
+ }
+ parse_uri_out:
+ if( rc!=SQLITE_OK ){
+ sqlite3_free(zFile);
+ zFile = 0;
+ }
+ *pFlags = flags;
+ *pzFile = zFile;
+ return rc;
+}
+
+
+/*
** This routine does the work of opening a database on behalf of
** sqlite3_open() and sqlite3_open16(). The database filename "zFilename"
** is UTF-8 encoded.
@@ -106529,12 +114262,14 @@
static int openDatabase(
const char *zFilename, /* Database filename UTF-8 encoded */
sqlite3 **ppDb, /* OUT: Returned database handle */
- unsigned flags, /* Operational flags */
+ unsigned int flags, /* Operational flags */
const char *zVfs /* Name of the VFS to use */
){
- sqlite3 *db;
- int rc;
- int isThreadsafe;
+ sqlite3 *db; /* Store allocated handle here */
+ int rc; /* Return code */
+ int isThreadsafe; /* True for threadsafe connections */
+ char *zOpen = 0; /* Filename argument to pass to BtreeOpen() */
+ char *zErrMsg = 0; /* Error message from sqlite3ParseUri() */
*ppDb = 0;
#ifndef SQLITE_OMIT_AUTOINIT
@@ -106558,7 +114293,7 @@
testcase( (1<<(flags&7))==0x02 ); /* READONLY */
testcase( (1<<(flags&7))==0x04 ); /* READWRITE */
testcase( (1<<(flags&7))==0x40 ); /* READWRITE | CREATE */
- if( ((1<<(flags&7)) & 0x46)==0 ) return SQLITE_MISUSE;
+ if( ((1<<(flags&7)) & 0x46)==0 ) return SQLITE_MISUSE_BKPT;
if( sqlite3GlobalConfig.bCoreMutex==0 ){
isThreadsafe = 0;
@@ -106580,7 +114315,8 @@
** The SQLITE_OPEN_NOMUTEX and SQLITE_OPEN_FULLMUTEX flags were
** dealt with in the previous code block. Besides these, the only
** valid input flags for sqlite3_open_v2() are SQLITE_OPEN_READONLY,
- ** SQLITE_OPEN_READWRITE, and SQLITE_OPEN_CREATE. Silently mask
+ ** SQLITE_OPEN_READWRITE, SQLITE_OPEN_CREATE, SQLITE_OPEN_SHAREDCACHE,
+ ** SQLITE_OPEN_PRIVATECACHE, and some reserved bits. Silently mask
** off all other flags.
*/
flags &= ~( SQLITE_OPEN_DELETEONCLOSE |
@@ -106619,7 +114355,7 @@
db->autoCommit = 1;
db->nextAutovac = -1;
db->nextPagesize = 0;
- db->flags |= SQLITE_ShortColNames | SQLITE_AutoIndex
+ db->flags |= SQLITE_ShortColNames | SQLITE_AutoIndex | SQLITE_EnableTrigger
#if SQLITE_DEFAULT_FILE_FORMAT<4
| SQLITE_LegacyFileFmt
#endif
@@ -106629,31 +114365,23 @@
#if SQLITE_DEFAULT_RECURSIVE_TRIGGERS
| SQLITE_RecTriggers
#endif
+#if defined(SQLITE_DEFAULT_FOREIGN_KEYS) && SQLITE_DEFAULT_FOREIGN_KEYS
+ | SQLITE_ForeignKeys
+#endif
;
sqlite3HashInit(&db->aCollSeq);
#ifndef SQLITE_OMIT_VIRTUALTABLE
sqlite3HashInit(&db->aModule);
#endif
- db->pVfs = sqlite3_vfs_find(zVfs);
- if( !db->pVfs ){
- rc = SQLITE_ERROR;
- sqlite3Error(db, rc, "no such vfs: %s", zVfs);
- goto opendb_out;
- }
-
/* Add the default collation sequence BINARY. BINARY works for both UTF-8
** and UTF-16, so add a version for each to avoid any unnecessary
** conversions. The only error that can occur here is a malloc() failure.
*/
- createCollation(db, "BINARY", SQLITE_UTF8, SQLITE_COLL_BINARY, 0,
- binCollFunc, 0);
- createCollation(db, "BINARY", SQLITE_UTF16BE, SQLITE_COLL_BINARY, 0,
- binCollFunc, 0);
- createCollation(db, "BINARY", SQLITE_UTF16LE, SQLITE_COLL_BINARY, 0,
- binCollFunc, 0);
- createCollation(db, "RTRIM", SQLITE_UTF8, SQLITE_COLL_USER, (void*)1,
- binCollFunc, 0);
+ createCollation(db, "BINARY", SQLITE_UTF8, 0, binCollFunc, 0);
+ createCollation(db, "BINARY", SQLITE_UTF16BE, 0, binCollFunc, 0);
+ createCollation(db, "BINARY", SQLITE_UTF16LE, 0, binCollFunc, 0);
+ createCollation(db, "RTRIM", SQLITE_UTF8, (void*)1, binCollFunc, 0);
if( db->mallocFailed ){
goto opendb_out;
}
@@ -106661,12 +114389,20 @@
assert( db->pDfltColl!=0 );
/* Also add a UTF-8 case-insensitive collation sequence. */
- createCollation(db, "NOCASE", SQLITE_UTF8, SQLITE_COLL_NOCASE, 0,
- nocaseCollatingFunc, 0);
+ createCollation(db, "NOCASE", SQLITE_UTF8, 0, nocaseCollatingFunc, 0);
+
+ /* Parse the filename/URI argument. */
+ db->openFlags = flags;
+ rc = sqlite3ParseUri(zVfs, zFilename, &flags, &db->pVfs, &zOpen, &zErrMsg);
+ if( rc!=SQLITE_OK ){
+ if( rc==SQLITE_NOMEM ) db->mallocFailed = 1;
+ sqlite3Error(db, rc, zErrMsg ? "%s" : 0, zErrMsg);
+ sqlite3_free(zErrMsg);
+ goto opendb_out;
+ }
/* Open the backend database driver */
- db->openFlags = flags;
- rc = sqlite3BtreeOpen(zFilename, db, &db->aDb[0].pBt, 0,
+ rc = sqlite3BtreeOpen(db->pVfs, zOpen, db, &db->aDb[0].pBt, 0,
flags | SQLITE_OPEN_MAIN_DB);
if( rc!=SQLITE_OK ){
if( rc==SQLITE_IOERR_NOMEM ){
@@ -106702,10 +114438,13 @@
/* Load automatic extensions - extensions that have been registered
** using the sqlite3_automatic_extension() API.
*/
- sqlite3AutoLoadExtensions(db);
rc = sqlite3_errcode(db);
- if( rc!=SQLITE_OK ){
- goto opendb_out;
+ if( rc==SQLITE_OK ){
+ sqlite3AutoLoadExtensions(db);
+ rc = sqlite3_errcode(db);
+ if( rc!=SQLITE_OK ){
+ goto opendb_out;
+ }
}
#ifdef SQLITE_ENABLE_FTS1
@@ -106759,11 +114498,13 @@
sqlite3_wal_autocheckpoint(db, SQLITE_DEFAULT_WAL_AUTOCHECKPOINT);
opendb_out:
+ sqlite3_free(zOpen);
if( db ){
assert( db->mutex!=0 || isThreadsafe==0 || sqlite3GlobalConfig.bFullMutex==0 );
sqlite3_mutex_leave(db->mutex);
}
rc = sqlite3_errcode(db);
+ assert( db!=0 || rc==SQLITE_NOMEM );
if( rc==SQLITE_NOMEM ){
sqlite3_close(db);
db = 0;
@@ -106790,7 +114531,7 @@
int flags, /* Flags */
const char *zVfs /* Name of VFS module to use */
){
- return openDatabase(filename, ppDb, flags, zVfs);
+ return openDatabase(filename, ppDb, (unsigned int)flags, zVfs);
}
#ifndef SQLITE_OMIT_UTF16
@@ -106844,7 +114585,7 @@
int rc;
sqlite3_mutex_enter(db->mutex);
assert( !db->mallocFailed );
- rc = createCollation(db, zName, (u8)enc, SQLITE_COLL_USER, pCtx, xCompare, 0);
+ rc = createCollation(db, zName, (u8)enc, pCtx, xCompare, 0);
rc = sqlite3ApiExit(db, rc);
sqlite3_mutex_leave(db->mutex);
return rc;
@@ -106864,7 +114605,7 @@
int rc;
sqlite3_mutex_enter(db->mutex);
assert( !db->mallocFailed );
- rc = createCollation(db, zName, (u8)enc, SQLITE_COLL_USER, pCtx, xCompare, xDel);
+ rc = createCollation(db, zName, (u8)enc, pCtx, xCompare, xDel);
rc = sqlite3ApiExit(db, rc);
sqlite3_mutex_leave(db->mutex);
return rc;
@@ -106887,7 +114628,7 @@
assert( !db->mallocFailed );
zName8 = sqlite3Utf16to8(db, zName, -1, SQLITE_UTF16NATIVE);
if( zName8 ){
- rc = createCollation(db, zName8, (u8)enc, SQLITE_COLL_USER, pCtx, xCompare, 0);
+ rc = createCollation(db, zName8, (u8)enc, pCtx, xCompare, 0);
sqlite3DbFree(db, zName8);
}
rc = sqlite3ApiExit(db, rc);
@@ -107168,6 +114909,8 @@
rc = SQLITE_OK;
}else if( fd->pMethods ){
rc = sqlite3OsFileControl(fd, op, pArg);
+ }else{
+ rc = SQLITE_NOTFOUND;
}
sqlite3BtreeLeave(pBtree);
}
@@ -107368,15 +115111,6 @@
}
#endif
- /* sqlite3_test_control(SQLITE_TESTCTRL_PGHDRSZ)
- **
- ** Return the size of a pcache header in bytes.
- */
- case SQLITE_TESTCTRL_PGHDRSZ: {
- rc = sizeof(PgHdr);
- break;
- }
-
/* sqlite3_test_control(SQLITE_TESTCTRL_SCRATCHMALLOC, sz, &pNew, pFree);
**
** Pass pFree into sqlite3ScratchFree().
@@ -107393,12 +115127,100 @@
break;
}
+ /* sqlite3_test_control(SQLITE_TESTCTRL_LOCALTIME_FAULT, int onoff);
+ **
+ ** If parameter onoff is non-zero, configure the wrappers so that all
+ ** subsequent calls to localtime() and variants fail. If onoff is zero,
+ ** undo this setting.
+ */
+ case SQLITE_TESTCTRL_LOCALTIME_FAULT: {
+ sqlite3GlobalConfig.bLocaltimeFault = va_arg(ap, int);
+ break;
+ }
+
+#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
+ /* sqlite3_test_control(SQLITE_TESTCTRL_EXPLAIN_STMT,
+ ** sqlite3_stmt*,const char**);
+ **
+ ** If compiled with SQLITE_ENABLE_TREE_EXPLAIN, each sqlite3_stmt holds
+ ** a string that describes the optimized parse tree. This test-control
+ ** returns a pointer to that string.
+ */
+ case SQLITE_TESTCTRL_EXPLAIN_STMT: {
+ sqlite3_stmt *pStmt = va_arg(ap, sqlite3_stmt*);
+ const char **pzRet = va_arg(ap, const char**);
+ *pzRet = sqlite3VdbeExplanation((Vdbe*)pStmt);
+ break;
+ }
+#endif
+
}
va_end(ap);
#endif /* SQLITE_OMIT_BUILTIN_TEST */
return rc;
}
+/*
+** This is a utility routine, useful to VFS implementations, that checks
+** to see if a database file was a URI that contained a specific query
+** parameter, and if so obtains the value of the query parameter.
+**
+** The zFilename argument is the filename pointer passed into the xOpen()
+** method of a VFS implementation. The zParam argument is the name of the
+** query parameter we seek. This routine returns the value of the zParam
+** parameter if it exists. If the parameter does not exist, this routine
+** returns a NULL pointer.
+*/
+SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam){
+ if( zFilename==0 ) return 0;
+ zFilename += sqlite3Strlen30(zFilename) + 1;
+ while( zFilename[0] ){
+ int x = strcmp(zFilename, zParam);
+ zFilename += sqlite3Strlen30(zFilename) + 1;
+ if( x==0 ) return zFilename;
+ zFilename += sqlite3Strlen30(zFilename) + 1;
+ }
+ return 0;
+}
+
+/*
+** Return a boolean value for a query parameter.
+*/
+SQLITE_API int sqlite3_uri_boolean(const char *zFilename, const char *zParam, int bDflt){
+ const char *z = sqlite3_uri_parameter(zFilename, zParam);
+ return z ? sqlite3GetBoolean(z) : (bDflt!=0);
+}
+
+/*
+** Return a 64-bit integer value for a query parameter.
+*/
+SQLITE_API sqlite3_int64 sqlite3_uri_int64(
+ const char *zFilename, /* Filename as passed to xOpen */
+ const char *zParam, /* URI parameter sought */
+ sqlite3_int64 bDflt /* return if parameter is missing */
+){
+ const char *z = sqlite3_uri_parameter(zFilename, zParam);
+ sqlite3_int64 v;
+ if( z && sqlite3Atoi64(z, &v, sqlite3Strlen30(z), SQLITE_UTF8)==SQLITE_OK ){
+ bDflt = v;
+ }
+ return bDflt;
+}
+
+/*
+** Return the filename of the database associated with a database
+** connection.
+*/
+SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName){
+ int i;
+ for(i=0; i<db->nDb; i++){
+ if( db->aDb[i].pBt && sqlite3StrICmp(zDbName, db->aDb[i].zName)==0 ){
+ return sqlite3BtreeGetFilename(db->aDb[i].pBt);
+ }
+ }
+ return 0;
+}
+
/************** End of main.c ************************************************/
/************** Begin file notify.c ******************************************/
/*
@@ -108028,12 +115850,6 @@
** into a single segment.
*/
-#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
-
-#if defined(SQLITE_ENABLE_FTS3) && !defined(SQLITE_CORE)
-# define SQLITE_CORE 1
-#endif
-
/************** Include fts3Int.h in the middle of fts3.c ********************/
/************** Begin file fts3Int.h *****************************************/
/*
@@ -108049,7 +115865,6 @@
******************************************************************************
**
*/
-
#ifndef _FTSINT_H
#define _FTSINT_H
@@ -108057,6 +115872,22 @@
# define NDEBUG 1
#endif
+/*
+** FTS4 is really an extension for FTS3. It is enabled using the
+** SQLITE_ENABLE_FTS3 macro. But to avoid confusion we also all
+** the SQLITE_ENABLE_FTS4 macro to serve as an alisse for SQLITE_ENABLE_FTS3.
+*/
+#if defined(SQLITE_ENABLE_FTS4) && !defined(SQLITE_ENABLE_FTS3)
+# define SQLITE_ENABLE_FTS3
+#endif
+
+#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
+
+/* If not building as part of the core, include sqlite3ext.h. */
+#ifndef SQLITE_CORE
+SQLITE_API extern const sqlite3_api_routines *sqlite3_api;
+#endif
+
/************** Include fts3_tokenizer.h in the middle of fts3Int.h **********/
/************** Begin file fts3_tokenizer.h **********************************/
/*
@@ -108355,6 +116186,11 @@
*/
#define SizeofArray(X) ((int)(sizeof(X)/sizeof(X[0])))
+
+#ifndef MIN
+# define MIN(x,y) ((x)<(y)?(x):(y))
+#endif
+
/*
** Maximum length of a varint encoded integer. The varint format is different
** from that used by SQLite, so the maximum length is 10, not 9.
@@ -108362,6 +116198,24 @@
#define FTS3_VARINT_MAX 10
/*
+** FTS4 virtual tables may maintain multiple indexes - one index of all terms
+** in the document set and zero or more prefix indexes. All indexes are stored
+** as one or more b+-trees in the %_segments and %_segdir tables.
+**
+** It is possible to determine which index a b+-tree belongs to based on the
+** value stored in the "%_segdir.level" column. Given this value L, the index
+** that the b+-tree belongs to is (L<<10). In other words, all b+-trees with
+** level values between 0 and 1023 (inclusive) belong to index 0, all levels
+** between 1024 and 2047 to index 1, and so on.
+**
+** It is considered impossible for an index to use more than 1024 levels. In
+** theory though this may happen, but only after at least
+** (FTS3_MERGE_COUNT^1024) separate flushes of the pending-terms tables.
+*/
+#define FTS3_SEGDIR_MAXLEVEL 1024
+#define FTS3_SEGDIR_MAXLEVEL_STR "1024"
+
+/*
** The testcase() macro is only used by the amalgamation. If undefined,
** make it a no-op.
*/
@@ -108400,10 +116254,37 @@
typedef short int i16; /* 2-byte (or larger) signed integer */
typedef unsigned int u32; /* 4-byte unsigned integer */
typedef sqlite3_uint64 u64; /* 8-byte unsigned integer */
+
/*
** Macro used to suppress compiler warnings for unused parameters.
*/
#define UNUSED_PARAMETER(x) (void)(x)
+
+/*
+** Activate assert() only if SQLITE_TEST is enabled.
+*/
+#if !defined(NDEBUG) && !defined(SQLITE_DEBUG)
+# define NDEBUG 1
+#endif
+
+/*
+** The TESTONLY macro is used to enclose variable declarations or
+** other bits of code that are needed to support the arguments
+** within testcase() and assert() macros.
+*/
+#if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST)
+# define TESTONLY(X) X
+#else
+# define TESTONLY(X)
+#endif
+
+#endif /* SQLITE_AMALGAMATION */
+
+#ifdef SQLITE_DEBUG
+SQLITE_PRIVATE int sqlite3Fts3Corrupt(void);
+# define FTS_CORRUPT_VTAB sqlite3Fts3Corrupt()
+#else
+# define FTS_CORRUPT_VTAB SQLITE_CORRUPT_VTAB
#endif
typedef struct Fts3Table Fts3Table;
@@ -108412,10 +116293,11 @@
typedef struct Fts3Phrase Fts3Phrase;
typedef struct Fts3PhraseToken Fts3PhraseToken;
+typedef struct Fts3Doclist Fts3Doclist;
typedef struct Fts3SegFilter Fts3SegFilter;
typedef struct Fts3DeferredToken Fts3DeferredToken;
typedef struct Fts3SegReader Fts3SegReader;
-typedef struct Fts3SegReaderArray Fts3SegReaderArray;
+typedef struct Fts3MultiSegReader Fts3MultiSegReader;
/*
** A connection to a fulltext index is an instance of the following
@@ -108432,30 +116314,56 @@
int nColumn; /* number of named columns in virtual table */
char **azColumn; /* column names. malloced */
sqlite3_tokenizer *pTokenizer; /* tokenizer for inserts and queries */
+ char *zContentTbl; /* content=xxx option, or NULL */
/* Precompiled statements used by the implementation. Each of these
** statements is run and reset within a single virtual table API call.
*/
- sqlite3_stmt *aStmt[24];
+ sqlite3_stmt *aStmt[27];
+
+ char *zReadExprlist;
+ char *zWriteExprlist;
int nNodeSize; /* Soft limit for node size */
u8 bHasStat; /* True if %_stat table exists */
u8 bHasDocsize; /* True if %_docsize table exists */
+ u8 bDescIdx; /* True if doclists are in reverse order */
int nPgsz; /* Page size for host database */
char *zSegmentsTbl; /* Name of %_segments table */
sqlite3_blob *pSegments; /* Blob handle open on %_segments table */
- /* The following hash table is used to buffer pending index updates during
+ /* TODO: Fix the first paragraph of this comment.
+ **
+ ** The following hash table is used to buffer pending index updates during
** transactions. Variable nPendingData estimates the memory size of the
** pending data, including hash table overhead, but not malloc overhead.
** When nPendingData exceeds nMaxPendingData, the buffer is flushed
** automatically. Variable iPrevDocid is the docid of the most recently
** inserted record.
+ **
+ ** A single FTS4 table may have multiple full-text indexes. For each index
+ ** there is an entry in the aIndex[] array. Index 0 is an index of all the
+ ** terms that appear in the document set. Each subsequent index in aIndex[]
+ ** is an index of prefixes of a specific length.
*/
- int nMaxPendingData;
- int nPendingData;
- sqlite_int64 iPrevDocid;
- Fts3Hash pendingTerms;
+ int nIndex; /* Size of aIndex[] */
+ struct Fts3Index {
+ int nPrefix; /* Prefix length (0 for main terms index) */
+ Fts3Hash hPending; /* Pending terms table for this index */
+ } *aIndex;
+ int nMaxPendingData; /* Max pending data before flush to disk */
+ int nPendingData; /* Current bytes of pending data */
+ sqlite_int64 iPrevDocid; /* Docid of most recently inserted document */
+
+#if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST)
+ /* State variables used for validating that the transaction control
+ ** methods of the virtual table are called at appropriate times. These
+ ** values do not contribution to the FTS computation; they are used for
+ ** verifying the SQLite core.
+ */
+ int inTransaction; /* True after xBegin but before xCommit/xRollback */
+ int mxSavepoint; /* Largest valid xSavepoint integer */
+#endif
};
/*
@@ -108476,8 +116384,10 @@
char *pNextId; /* Pointer into the body of aDoclist */
char *aDoclist; /* List of docids for full-text queries */
int nDoclist; /* Size of buffer at aDoclist */
+ u8 bDesc; /* True to sort in descending order */
int eEvalmode; /* An FTS3_EVAL_XX constant */
int nRowAvg; /* Average size of database rows, in pages */
+ sqlite3_int64 nDoc; /* Documents in table */
int isMatchinfoNeeded; /* True when aMatchinfo[] needs filling in */
u32 *aMatchinfo; /* Information about most recent match */
@@ -108508,47 +116418,71 @@
#define FTS3_DOCID_SEARCH 1 /* Lookup by rowid on %_content table */
#define FTS3_FULLTEXT_SEARCH 2 /* Full-text index search */
+
+struct Fts3Doclist {
+ char *aAll; /* Array containing doclist (or NULL) */
+ int nAll; /* Size of a[] in bytes */
+ char *pNextDocid; /* Pointer to next docid */
+
+ sqlite3_int64 iDocid; /* Current docid (if pList!=0) */
+ int bFreeList; /* True if pList should be sqlite3_free()d */
+ char *pList; /* Pointer to position list following iDocid */
+ int nList; /* Length of position list */
+};
+
/*
** A "phrase" is a sequence of one or more tokens that must match in
** sequence. A single token is the base case and the most common case.
** For a sequence of tokens contained in double-quotes (i.e. "one two three")
** nToken will be the number of tokens in the string.
-**
-** The nDocMatch and nMatch variables contain data that may be used by the
-** matchinfo() function. They are populated when the full-text index is
-** queried for hits on the phrase. If one or more tokens in the phrase
-** are deferred, the nDocMatch and nMatch variables are populated based
-** on the assumption that the
*/
struct Fts3PhraseToken {
char *z; /* Text of the token */
int n; /* Number of bytes in buffer z */
int isPrefix; /* True if token ends with a "*" character */
- int bFulltext; /* True if full-text index was used */
- Fts3SegReaderArray *pArray; /* Segment-reader for this token */
+ int bFirst; /* True if token must appear at position 0 */
+
+ /* Variables above this point are populated when the expression is
+ ** parsed (by code in fts3_expr.c). Below this point the variables are
+ ** used when evaluating the expression. */
Fts3DeferredToken *pDeferred; /* Deferred token object for this token */
+ Fts3MultiSegReader *pSegcsr; /* Segment-reader for this token */
};
struct Fts3Phrase {
- /* Variables populated by fts3_expr.c when parsing a MATCH expression */
+ /* Cache of doclist for this phrase. */
+ Fts3Doclist doclist;
+ int bIncr; /* True if doclist is loaded incrementally */
+ int iDoclistToken;
+
+ /* Variables below this point are populated by fts3_expr.c when parsing
+ ** a MATCH expression. Everything above is part of the evaluation phase.
+ */
int nToken; /* Number of tokens in the phrase */
int iColumn; /* Index of column this phrase must match */
- int isNot; /* Phrase prefixed by unary not (-) operator */
Fts3PhraseToken aToken[1]; /* One entry for each token in the phrase */
};
/*
** A tree of these objects forms the RHS of a MATCH operator.
**
-** If Fts3Expr.eType is either FTSQUERY_NEAR or FTSQUERY_PHRASE and isLoaded
-** is true, then aDoclist points to a malloced buffer, size nDoclist bytes,
-** containing the results of the NEAR or phrase query in FTS3 doclist
-** format. As usual, the initial "Length" field found in doclists stored
-** on disk is omitted from this buffer.
+** If Fts3Expr.eType is FTSQUERY_PHRASE and isLoaded is true, then aDoclist
+** points to a malloced buffer, size nDoclist bytes, containing the results
+** of this phrase query in FTS3 doclist format. As usual, the initial
+** "Length" field found in doclists stored on disk is omitted from this
+** buffer.
**
-** Variable pCurrent always points to the start of a docid field within
-** aDoclist. Since the doclist is usually scanned in docid order, this can
-** be used to accelerate seeking to the required docid within the doclist.
+** Variable aMI is used only for FTSQUERY_NEAR nodes to store the global
+** matchinfo data. If it is not NULL, it points to an array of size nCol*3,
+** where nCol is the number of columns in the queried FTS table. The array
+** is populated as follows:
+**
+** aMI[iCol*3 + 0] = Undefined
+** aMI[iCol*3 + 1] = Number of occurrences
+** aMI[iCol*3 + 2] = Number of rows containing at least one instance
+**
+** The aMI array is allocated using sqlite3_malloc(). It should be freed
+** when the expression node is.
*/
struct Fts3Expr {
int eType; /* One of the FTSQUERY_XXX values defined below */
@@ -108558,12 +116492,13 @@
Fts3Expr *pRight; /* Right operand */
Fts3Phrase *pPhrase; /* Valid if eType==FTSQUERY_PHRASE */
- int isLoaded; /* True if aDoclist/nDoclist are initialized. */
- char *aDoclist; /* Buffer containing doclist */
- int nDoclist; /* Size of aDoclist in bytes */
+ /* The following are used by the fts3_eval.c module. */
+ sqlite3_int64 iDocid; /* Current docid */
+ u8 bEof; /* True this expression is at EOF already */
+ u8 bStart; /* True if iDocid is valid */
+ u8 bDeferred; /* True if this expression is entirely deferred */
- sqlite3_int64 iCurrent;
- char *pCurrent;
+ u32 *aMI;
};
/*
@@ -108591,16 +116526,12 @@
SQLITE_PRIVATE int sqlite3Fts3Optimize(Fts3Table *);
SQLITE_PRIVATE int sqlite3Fts3SegReaderNew(int, sqlite3_int64,
sqlite3_int64, sqlite3_int64, const char *, int, Fts3SegReader**);
-SQLITE_PRIVATE int sqlite3Fts3SegReaderPending(Fts3Table*,const char*,int,int,Fts3SegReader**);
+SQLITE_PRIVATE int sqlite3Fts3SegReaderPending(
+ Fts3Table*,int,const char*,int,int,Fts3SegReader**);
SQLITE_PRIVATE void sqlite3Fts3SegReaderFree(Fts3SegReader *);
-SQLITE_PRIVATE int sqlite3Fts3SegReaderIterate(
- Fts3Table *, Fts3SegReader **, int, Fts3SegFilter *,
- int (*)(Fts3Table *, void *, char *, int, char *, int), void *
-);
-SQLITE_PRIVATE int sqlite3Fts3SegReaderCost(Fts3Cursor *, Fts3SegReader *, int *);
-SQLITE_PRIVATE int sqlite3Fts3AllSegdirs(Fts3Table*, sqlite3_stmt **);
+SQLITE_PRIVATE int sqlite3Fts3AllSegdirs(Fts3Table*, int, int, sqlite3_stmt **);
SQLITE_PRIVATE int sqlite3Fts3ReadLock(Fts3Table *);
-SQLITE_PRIVATE int sqlite3Fts3ReadBlock(Fts3Table*, sqlite3_int64, char **, int*);
+SQLITE_PRIVATE int sqlite3Fts3ReadBlock(Fts3Table*, sqlite3_int64, char **, int*, int*);
SQLITE_PRIVATE int sqlite3Fts3SelectDoctotal(Fts3Table *, sqlite3_stmt **);
SQLITE_PRIVATE int sqlite3Fts3SelectDocsize(Fts3Table *, sqlite3_int64, sqlite3_stmt **);
@@ -108609,15 +116540,26 @@
SQLITE_PRIVATE int sqlite3Fts3DeferToken(Fts3Cursor *, Fts3PhraseToken *, int);
SQLITE_PRIVATE int sqlite3Fts3CacheDeferredDoclists(Fts3Cursor *);
SQLITE_PRIVATE void sqlite3Fts3FreeDeferredDoclists(Fts3Cursor *);
-SQLITE_PRIVATE char *sqlite3Fts3DeferredDoclist(Fts3DeferredToken *, int *);
-
SQLITE_PRIVATE void sqlite3Fts3SegmentsClose(Fts3Table *);
+/* Special values interpreted by sqlite3SegReaderCursor() */
+#define FTS3_SEGCURSOR_PENDING -1
+#define FTS3_SEGCURSOR_ALL -2
+
+SQLITE_PRIVATE int sqlite3Fts3SegReaderStart(Fts3Table*, Fts3MultiSegReader*, Fts3SegFilter*);
+SQLITE_PRIVATE int sqlite3Fts3SegReaderStep(Fts3Table *, Fts3MultiSegReader *);
+SQLITE_PRIVATE void sqlite3Fts3SegReaderFinish(Fts3MultiSegReader *);
+
+SQLITE_PRIVATE int sqlite3Fts3SegReaderCursor(
+ Fts3Table *, int, int, const char *, int, int, int, Fts3MultiSegReader *);
+
/* Flags allowed as part of the 4th argument to SegmentReaderIterate() */
#define FTS3_SEGMENT_REQUIRE_POS 0x00000001
#define FTS3_SEGMENT_IGNORE_EMPTY 0x00000002
#define FTS3_SEGMENT_COLUMN_FILTER 0x00000004
#define FTS3_SEGMENT_PREFIX 0x00000008
+#define FTS3_SEGMENT_SCAN 0x00000010
+#define FTS3_SEGMENT_FIRST 0x00000020
/* Type passed as 4th argument to SegmentReaderIterate() */
struct Fts3SegFilter {
@@ -108627,17 +116569,38 @@
int flags;
};
+struct Fts3MultiSegReader {
+ /* Used internally by sqlite3Fts3SegReaderXXX() calls */
+ Fts3SegReader **apSegment; /* Array of Fts3SegReader objects */
+ int nSegment; /* Size of apSegment array */
+ int nAdvance; /* How many seg-readers to advance */
+ Fts3SegFilter *pFilter; /* Pointer to filter object */
+ char *aBuffer; /* Buffer to merge doclists in */
+ int nBuffer; /* Allocated size of aBuffer[] in bytes */
+
+ int iColFilter; /* If >=0, filter for this column */
+ int bRestart;
+
+ /* Used by fts3.c only. */
+ int nCost; /* Cost of running iterator */
+ int bLookup; /* True if a lookup of a single entry. */
+
+ /* Output values. Valid only after Fts3SegReaderStep() returns SQLITE_ROW. */
+ char *zTerm; /* Pointer to term buffer */
+ int nTerm; /* Size of zTerm in bytes */
+ char *aDoclist; /* Pointer to doclist buffer */
+ int nDoclist; /* Size of aDoclist[] in bytes */
+};
+
/* fts3.c */
SQLITE_PRIVATE int sqlite3Fts3PutVarint(char *, sqlite3_int64);
SQLITE_PRIVATE int sqlite3Fts3GetVarint(const char *, sqlite_int64 *);
SQLITE_PRIVATE int sqlite3Fts3GetVarint32(const char *, int *);
SQLITE_PRIVATE int sqlite3Fts3VarintLen(sqlite3_uint64);
SQLITE_PRIVATE void sqlite3Fts3Dequote(char *);
-
-SQLITE_PRIVATE char *sqlite3Fts3FindPositions(Fts3Expr *, sqlite3_int64, int);
-SQLITE_PRIVATE int sqlite3Fts3ExprLoadDoclist(Fts3Cursor *, Fts3Expr *);
-SQLITE_PRIVATE int sqlite3Fts3ExprLoadFtDoclist(Fts3Cursor *, Fts3Expr *, char **, int *);
-SQLITE_PRIVATE int sqlite3Fts3ExprNearTrim(Fts3Expr *, Fts3Expr *, int);
+SQLITE_PRIVATE void sqlite3Fts3DoclistPrev(int,char*,int,char**,sqlite3_int64*,int*,u8*);
+SQLITE_PRIVATE int sqlite3Fts3EvalPhraseStats(Fts3Cursor *, Fts3Expr *, u32 *);
+SQLITE_PRIVATE int sqlite3Fts3FirstFilter(sqlite3_int64, char *, int, char *);
/* fts3_tokenizer.c */
SQLITE_PRIVATE const char *sqlite3Fts3NextToken(const char *, int *);
@@ -108656,23 +116619,56 @@
/* fts3_expr.c */
SQLITE_PRIVATE int sqlite3Fts3ExprParse(sqlite3_tokenizer *,
- char **, int, int, const char *, int, Fts3Expr **
+ char **, int, int, int, const char *, int, Fts3Expr **
);
SQLITE_PRIVATE void sqlite3Fts3ExprFree(Fts3Expr *);
#ifdef SQLITE_TEST
SQLITE_PRIVATE int sqlite3Fts3ExprInitTestInterface(sqlite3 *db);
+SQLITE_PRIVATE int sqlite3Fts3InitTerm(sqlite3 *db);
#endif
+/* fts3_aux.c */
+SQLITE_PRIVATE int sqlite3Fts3InitAux(sqlite3 *db);
+
+SQLITE_PRIVATE void sqlite3Fts3EvalPhraseCleanup(Fts3Phrase *);
+
+SQLITE_PRIVATE int sqlite3Fts3MsrIncrStart(
+ Fts3Table*, Fts3MultiSegReader*, int, const char*, int);
+SQLITE_PRIVATE int sqlite3Fts3MsrIncrNext(
+ Fts3Table *, Fts3MultiSegReader *, sqlite3_int64 *, char **, int *);
+SQLITE_PRIVATE char *sqlite3Fts3EvalPhrasePoslist(Fts3Cursor *, Fts3Expr *, int iCol);
+SQLITE_PRIVATE int sqlite3Fts3MsrOvfl(Fts3Cursor *, Fts3MultiSegReader *, int *);
+SQLITE_PRIVATE int sqlite3Fts3MsrIncrRestart(Fts3MultiSegReader *pCsr);
+
+SQLITE_PRIVATE int sqlite3Fts3DeferredTokenList(Fts3DeferredToken *, char **, int *);
+
+#endif /* !SQLITE_CORE || SQLITE_ENABLE_FTS3 */
#endif /* _FTSINT_H */
/************** End of fts3Int.h *********************************************/
/************** Continuing where we left off in fts3.c ***********************/
+#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
+#if defined(SQLITE_ENABLE_FTS3) && !defined(SQLITE_CORE)
+# define SQLITE_CORE 1
+#endif
+
+/* #include <assert.h> */
+/* #include <stdlib.h> */
+/* #include <stddef.h> */
+/* #include <stdio.h> */
+/* #include <string.h> */
+/* #include <stdarg.h> */
#ifndef SQLITE_CORE
SQLITE_EXTENSION_INIT1
#endif
+static int fts3EvalNext(Fts3Cursor *pCsr);
+static int fts3EvalStart(Fts3Cursor *pCsr);
+static int fts3TermSegReaderCursor(
+ Fts3Cursor *, const char *, int, int, Fts3MultiSegReader **);
+
/*
** Write a 64-bit variable-length integer to memory starting at p[0].
** The length of data written will be between 1 and FTS3_VARINT_MAX bytes.
@@ -108780,17 +116776,31 @@
}
/*
-** As long as *pp has not reached its end (pEnd), then do the same
-** as fts3GetDeltaVarint(): read a single varint and add it to *pVal.
-** But if we have reached the end of the varint, just set *pp=0 and
-** leave *pVal unchanged.
+** When this function is called, *pp points to the first byte following a
+** varint that is part of a doclist (or position-list, or any other list
+** of varints). This function moves *pp to point to the start of that varint,
+** and sets *pVal by the varint value.
+**
+** Argument pStart points to the first byte of the doclist that the
+** varint is part of.
*/
-static void fts3GetDeltaVarint2(char **pp, char *pEnd, sqlite3_int64 *pVal){
- if( *pp>=pEnd ){
- *pp = 0;
- }else{
- fts3GetDeltaVarint(pp, pVal);
- }
+static void fts3GetReverseVarint(
+ char **pp,
+ char *pStart,
+ sqlite3_int64 *pVal
+){
+ sqlite3_int64 iVal;
+ char *p;
+
+ /* Pointer p now points at the first byte past the varint we are
+ ** interested in. So, unless the doclist is corrupt, the 0x80 bit is
+ ** clear on character p[-1]. */
+ for(p = (*pp)-2; p>=pStart && *p&0x80; p--);
+ p++;
+ *pp = p;
+
+ sqlite3Fts3GetVarint(p, &iVal);
+ *pVal = iVal;
}
/*
@@ -108808,6 +116818,9 @@
sqlite3_finalize(p->aStmt[i]);
}
sqlite3_free(p->zSegmentsTbl);
+ sqlite3_free(p->zReadExprlist);
+ sqlite3_free(p->zWriteExprlist);
+ sqlite3_free(p->zContentTbl);
/* Invoke the tokenizer destructor to free the tokenizer. */
p->pTokenizer->pModule->xDestroy(p->pTokenizer);
@@ -108847,16 +116860,19 @@
** The xDestroy() virtual table method.
*/
static int fts3DestroyMethod(sqlite3_vtab *pVtab){
- int rc = SQLITE_OK; /* Return code */
Fts3Table *p = (Fts3Table *)pVtab;
- sqlite3 *db = p->db;
+ int rc = SQLITE_OK; /* Return code */
+ const char *zDb = p->zDb; /* Name of database (e.g. "main", "temp") */
+ sqlite3 *db = p->db; /* Database handle */
/* Drop the shadow tables */
- fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_content'", p->zDb, p->zName);
- fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segments'", p->zDb,p->zName);
- fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segdir'", p->zDb, p->zName);
- fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_docsize'", p->zDb, p->zName);
- fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_stat'", p->zDb, p->zName);
+ if( p->zContentTbl==0 ){
+ fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_content'", zDb, p->zName);
+ }
+ fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segments'", zDb,p->zName);
+ fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segdir'", zDb, p->zName);
+ fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_docsize'", zDb, p->zName);
+ fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_stat'", zDb, p->zName);
/* If everything has worked, invoke fts3DisconnectMethod() to free the
** memory associated with the Fts3Table structure and return SQLITE_OK.
@@ -108882,6 +116898,8 @@
char *zSql; /* SQL statement passed to declare_vtab() */
char *zCols; /* List of user defined columns */
+ sqlite3_vtab_config(p->db, SQLITE_VTAB_CONSTRAINT_SUPPORT, 1);
+
/* Create a list of user columns for the virtual table */
zCols = sqlite3_mprintf("%Q, ", p->azColumn[0]);
for(i=1; zCols && i<p->nColumn; i++){
@@ -108916,23 +116934,27 @@
static int fts3CreateTables(Fts3Table *p){
int rc = SQLITE_OK; /* Return code */
int i; /* Iterator variable */
- char *zContentCols; /* Columns of %_content table */
sqlite3 *db = p->db; /* The database connection */
- /* Create a list of user columns for the content table */
- zContentCols = sqlite3_mprintf("docid INTEGER PRIMARY KEY");
- for(i=0; zContentCols && i<p->nColumn; i++){
- char *z = p->azColumn[i];
- zContentCols = sqlite3_mprintf("%z, 'c%d%q'", zContentCols, i, z);
- }
- if( zContentCols==0 ) rc = SQLITE_NOMEM;
+ if( p->zContentTbl==0 ){
+ char *zContentCols; /* Columns of %_content table */
- /* Create the content table */
- fts3DbExec(&rc, db,
- "CREATE TABLE %Q.'%q_content'(%s)",
- p->zDb, p->zName, zContentCols
- );
- sqlite3_free(zContentCols);
+ /* Create a list of user columns for the content table */
+ zContentCols = sqlite3_mprintf("docid INTEGER PRIMARY KEY");
+ for(i=0; zContentCols && i<p->nColumn; i++){
+ char *z = p->azColumn[i];
+ zContentCols = sqlite3_mprintf("%z, 'c%d%q'", zContentCols, i, z);
+ }
+ if( zContentCols==0 ) rc = SQLITE_NOMEM;
+
+ /* Create the content table */
+ fts3DbExec(&rc, db,
+ "CREATE TABLE %Q.'%q_content'(%s)",
+ p->zDb, p->zName, zContentCols
+ );
+ sqlite3_free(zContentCols);
+ }
+
/* Create other tables */
fts3DbExec(&rc, db,
"CREATE TABLE %Q.'%q_segments'(blockid INTEGER PRIMARY KEY, block BLOB);",
@@ -108987,6 +117009,9 @@
sqlite3_step(pStmt);
p->nPgsz = sqlite3_column_int(pStmt, 0);
rc = sqlite3_finalize(pStmt);
+ }else if( rc==SQLITE_AUTH ){
+ p->nPgsz = 1024;
+ rc = SQLITE_OK;
}
}
assert( p->nPgsz>0 || rc!=SQLITE_OK );
@@ -109026,6 +117051,320 @@
}
/*
+** Append the output of a printf() style formatting to an existing string.
+*/
+static void fts3Appendf(
+ int *pRc, /* IN/OUT: Error code */
+ char **pz, /* IN/OUT: Pointer to string buffer */
+ const char *zFormat, /* Printf format string to append */
+ ... /* Arguments for printf format string */
+){
+ if( *pRc==SQLITE_OK ){
+ va_list ap;
+ char *z;
+ va_start(ap, zFormat);
+ z = sqlite3_vmprintf(zFormat, ap);
+ va_end(ap);
+ if( z && *pz ){
+ char *z2 = sqlite3_mprintf("%s%s", *pz, z);
+ sqlite3_free(z);
+ z = z2;
+ }
+ if( z==0 ) *pRc = SQLITE_NOMEM;
+ sqlite3_free(*pz);
+ *pz = z;
+ }
+}
+
+/*
+** Return a copy of input string zInput enclosed in double-quotes (") and
+** with all double quote characters escaped. For example:
+**
+** fts3QuoteId("un \"zip\"") -> "un \"\"zip\"\""
+**
+** The pointer returned points to memory obtained from sqlite3_malloc(). It
+** is the callers responsibility to call sqlite3_free() to release this
+** memory.
+*/
+static char *fts3QuoteId(char const *zInput){
+ int nRet;
+ char *zRet;
+ nRet = 2 + strlen(zInput)*2 + 1;
+ zRet = sqlite3_malloc(nRet);
+ if( zRet ){
+ int i;
+ char *z = zRet;
+ *(z++) = '"';
+ for(i=0; zInput[i]; i++){
+ if( zInput[i]=='"' ) *(z++) = '"';
+ *(z++) = zInput[i];
+ }
+ *(z++) = '"';
+ *(z++) = '\0';
+ }
+ return zRet;
+}
+
+/*
+** Return a list of comma separated SQL expressions and a FROM clause that
+** could be used in a SELECT statement such as the following:
+**
+** SELECT <list of expressions> FROM %_content AS x ...
+**
+** to return the docid, followed by each column of text data in order
+** from left to write. If parameter zFunc is not NULL, then instead of
+** being returned directly each column of text data is passed to an SQL
+** function named zFunc first. For example, if zFunc is "unzip" and the
+** table has the three user-defined columns "a", "b", and "c", the following
+** string is returned:
+**
+** "docid, unzip(x.'a'), unzip(x.'b'), unzip(x.'c') FROM %_content AS x"
+**
+** The pointer returned points to a buffer allocated by sqlite3_malloc(). It
+** is the responsibility of the caller to eventually free it.
+**
+** If *pRc is not SQLITE_OK when this function is called, it is a no-op (and
+** a NULL pointer is returned). Otherwise, if an OOM error is encountered
+** by this function, NULL is returned and *pRc is set to SQLITE_NOMEM. If
+** no error occurs, *pRc is left unmodified.
+*/
+static char *fts3ReadExprList(Fts3Table *p, const char *zFunc, int *pRc){
+ char *zRet = 0;
+ char *zFree = 0;
+ char *zFunction;
+ int i;
+
+ if( p->zContentTbl==0 ){
+ if( !zFunc ){
+ zFunction = "";
+ }else{
+ zFree = zFunction = fts3QuoteId(zFunc);
+ }
+ fts3Appendf(pRc, &zRet, "docid");
+ for(i=0; i<p->nColumn; i++){
+ fts3Appendf(pRc, &zRet, ",%s(x.'c%d%q')", zFunction, i, p->azColumn[i]);
+ }
+ sqlite3_free(zFree);
+ }else{
+ fts3Appendf(pRc, &zRet, "rowid");
+ for(i=0; i<p->nColumn; i++){
+ fts3Appendf(pRc, &zRet, ", x.'%q'", p->azColumn[i]);
+ }
+ }
+ fts3Appendf(pRc, &zRet, "FROM '%q'.'%q%s' AS x",
+ p->zDb,
+ (p->zContentTbl ? p->zContentTbl : p->zName),
+ (p->zContentTbl ? "" : "_content")
+ );
+ return zRet;
+}
+
+/*
+** Return a list of N comma separated question marks, where N is the number
+** of columns in the %_content table (one for the docid plus one for each
+** user-defined text column).
+**
+** If argument zFunc is not NULL, then all but the first question mark
+** is preceded by zFunc and an open bracket, and followed by a closed
+** bracket. For example, if zFunc is "zip" and the FTS3 table has three
+** user-defined text columns, the following string is returned:
+**
+** "?, zip(?), zip(?), zip(?)"
+**
+** The pointer returned points to a buffer allocated by sqlite3_malloc(). It
+** is the responsibility of the caller to eventually free it.
+**
+** If *pRc is not SQLITE_OK when this function is called, it is a no-op (and
+** a NULL pointer is returned). Otherwise, if an OOM error is encountered
+** by this function, NULL is returned and *pRc is set to SQLITE_NOMEM. If
+** no error occurs, *pRc is left unmodified.
+*/
+static char *fts3WriteExprList(Fts3Table *p, const char *zFunc, int *pRc){
+ char *zRet = 0;
+ char *zFree = 0;
+ char *zFunction;
+ int i;
+
+ if( !zFunc ){
+ zFunction = "";
+ }else{
+ zFree = zFunction = fts3QuoteId(zFunc);
+ }
+ fts3Appendf(pRc, &zRet, "?");
+ for(i=0; i<p->nColumn; i++){
+ fts3Appendf(pRc, &zRet, ",%s(?)", zFunction);
+ }
+ sqlite3_free(zFree);
+ return zRet;
+}
+
+/*
+** This function interprets the string at (*pp) as a non-negative integer
+** value. It reads the integer and sets *pnOut to the value read, then
+** sets *pp to point to the byte immediately following the last byte of
+** the integer value.
+**
+** Only decimal digits ('0'..'9') may be part of an integer value.
+**
+** If *pp does not being with a decimal digit SQLITE_ERROR is returned and
+** the output value undefined. Otherwise SQLITE_OK is returned.
+**
+** This function is used when parsing the "prefix=" FTS4 parameter.
+*/
+static int fts3GobbleInt(const char **pp, int *pnOut){
+ const char *p; /* Iterator pointer */
+ int nInt = 0; /* Output value */
+
+ for(p=*pp; p[0]>='0' && p[0]<='9'; p++){
+ nInt = nInt * 10 + (p[0] - '0');
+ }
+ if( p==*pp ) return SQLITE_ERROR;
+ *pnOut = nInt;
+ *pp = p;
+ return SQLITE_OK;
+}
+
+/*
+** This function is called to allocate an array of Fts3Index structures
+** representing the indexes maintained by the current FTS table. FTS tables
+** always maintain the main "terms" index, but may also maintain one or
+** more "prefix" indexes, depending on the value of the "prefix=" parameter
+** (if any) specified as part of the CREATE VIRTUAL TABLE statement.
+**
+** Argument zParam is passed the value of the "prefix=" option if one was
+** specified, or NULL otherwise.
+**
+** If no error occurs, SQLITE_OK is returned and *apIndex set to point to
+** the allocated array. *pnIndex is set to the number of elements in the
+** array. If an error does occur, an SQLite error code is returned.
+**
+** Regardless of whether or not an error is returned, it is the responsibility
+** of the caller to call sqlite3_free() on the output array to free it.
+*/
+static int fts3PrefixParameter(
+ const char *zParam, /* ABC in prefix=ABC parameter to parse */
+ int *pnIndex, /* OUT: size of *apIndex[] array */
+ struct Fts3Index **apIndex /* OUT: Array of indexes for this table */
+){
+ struct Fts3Index *aIndex; /* Allocated array */
+ int nIndex = 1; /* Number of entries in array */
+
+ if( zParam && zParam[0] ){
+ const char *p;
+ nIndex++;
+ for(p=zParam; *p; p++){
+ if( *p==',' ) nIndex++;
+ }
+ }
+
+ aIndex = sqlite3_malloc(sizeof(struct Fts3Index) * nIndex);
+ *apIndex = aIndex;
+ *pnIndex = nIndex;
+ if( !aIndex ){
+ return SQLITE_NOMEM;
+ }
+
+ memset(aIndex, 0, sizeof(struct Fts3Index) * nIndex);
+ if( zParam ){
+ const char *p = zParam;
+ int i;
+ for(i=1; i<nIndex; i++){
+ int nPrefix;
+ if( fts3GobbleInt(&p, &nPrefix) ) return SQLITE_ERROR;
+ aIndex[i].nPrefix = nPrefix;
+ p++;
+ }
+ }
+
+ return SQLITE_OK;
+}
+
+/*
+** This function is called when initializing an FTS4 table that uses the
+** content=xxx option. It determines the number of and names of the columns
+** of the new FTS4 table.
+**
+** The third argument passed to this function is the value passed to the
+** config=xxx option (i.e. "xxx"). This function queries the database for
+** a table of that name. If found, the output variables are populated
+** as follows:
+**
+** *pnCol: Set to the number of columns table xxx has,
+**
+** *pnStr: Set to the total amount of space required to store a copy
+** of each columns name, including the nul-terminator.
+**
+** *pazCol: Set to point to an array of *pnCol strings. Each string is
+** the name of the corresponding column in table xxx. The array
+** and its contents are allocated using a single allocation. It
+** is the responsibility of the caller to free this allocation
+** by eventually passing the *pazCol value to sqlite3_free().
+**
+** If the table cannot be found, an error code is returned and the output
+** variables are undefined. Or, if an OOM is encountered, SQLITE_NOMEM is
+** returned (and the output variables are undefined).
+*/
+static int fts3ContentColumns(
+ sqlite3 *db, /* Database handle */
+ const char *zDb, /* Name of db (i.e. "main", "temp" etc.) */
+ const char *zTbl, /* Name of content table */
+ const char ***pazCol, /* OUT: Malloc'd array of column names */
+ int *pnCol, /* OUT: Size of array *pazCol */
+ int *pnStr /* OUT: Bytes of string content */
+){
+ int rc = SQLITE_OK; /* Return code */
+ char *zSql; /* "SELECT *" statement on zTbl */
+ sqlite3_stmt *pStmt = 0; /* Compiled version of zSql */
+
+ zSql = sqlite3_mprintf("SELECT * FROM %Q.%Q", zDb, zTbl);
+ if( !zSql ){
+ rc = SQLITE_NOMEM;
+ }else{
+ rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0);
+ }
+ sqlite3_free(zSql);
+
+ if( rc==SQLITE_OK ){
+ const char **azCol; /* Output array */
+ int nStr = 0; /* Size of all column names (incl. 0x00) */
+ int nCol; /* Number of table columns */
+ int i; /* Used to iterate through columns */
+
+ /* Loop through the returned columns. Set nStr to the number of bytes of
+ ** space required to store a copy of each column name, including the
+ ** nul-terminator byte. */
+ nCol = sqlite3_column_count(pStmt);
+ for(i=0; i<nCol; i++){
+ const char *zCol = sqlite3_column_name(pStmt, i);
+ nStr += strlen(zCol) + 1;
+ }
+
+ /* Allocate and populate the array to return. */
+ azCol = (const char **)sqlite3_malloc(sizeof(char *) * nCol + nStr);
+ if( azCol==0 ){
+ rc = SQLITE_NOMEM;
+ }else{
+ char *p = (char *)&azCol[nCol];
+ for(i=0; i<nCol; i++){
+ const char *zCol = sqlite3_column_name(pStmt, i);
+ int n = strlen(zCol)+1;
+ memcpy(p, zCol, n);
+ azCol[i] = p;
+ p += n;
+ }
+ }
+ sqlite3_finalize(pStmt);
+
+ /* Set the output variables. */
+ *pnCol = nCol;
+ *pnStr = nStr;
+ *pazCol = azCol;
+ }
+
+ return rc;
+}
+
+/*
** This function is the implementation of both the xConnect and xCreate
** methods of the FTS3 virtual table.
**
@@ -109057,10 +117396,20 @@
int nDb; /* Bytes required to hold database name */
int nName; /* Bytes required to hold table name */
int isFts4 = (argv[0][3]=='4'); /* True for FTS4, false for FTS3 */
- int bNoDocsize = 0; /* True to omit %_docsize table */
const char **aCol; /* Array of column names */
sqlite3_tokenizer *pTokenizer = 0; /* Tokenizer for this table */
+ int nIndex; /* Size of aIndex[] array */
+ struct Fts3Index *aIndex = 0; /* Array of indexes for this table */
+
+ /* The results of parsing supported FTS4 key=value options: */
+ int bNoDocsize = 0; /* True to omit %_docsize table */
+ int bDescIdx = 0; /* True to store descending indexes */
+ char *zPrefix = 0; /* Prefix parameter value (or NULL) */
+ char *zCompress = 0; /* compress=? parameter (or NULL) */
+ char *zUncompress = 0; /* uncompress=? parameter (or NULL) */
+ char *zContent = 0; /* content=? parameter (or NULL) */
+
assert( strlen(argv[0])==4 );
assert( (sqlite3_strnicmp(argv[0], "fts4", 4)==0 && isFts4)
|| (sqlite3_strnicmp(argv[0], "fts3", 4)==0 && !isFts4)
@@ -109100,22 +117449,79 @@
/* Check if it is an FTS4 special argument. */
else if( isFts4 && fts3IsSpecialColumn(z, &nKey, &zVal) ){
+ struct Fts4Option {
+ const char *zOpt;
+ int nOpt;
+ } aFts4Opt[] = {
+ { "matchinfo", 9 }, /* 0 -> MATCHINFO */
+ { "prefix", 6 }, /* 1 -> PREFIX */
+ { "compress", 8 }, /* 2 -> COMPRESS */
+ { "uncompress", 10 }, /* 3 -> UNCOMPRESS */
+ { "order", 5 }, /* 4 -> ORDER */
+ { "content", 7 } /* 5 -> CONTENT */
+ };
+
+ int iOpt;
if( !zVal ){
rc = SQLITE_NOMEM;
- goto fts3_init_out;
- }
- if( nKey==9 && 0==sqlite3_strnicmp(z, "matchinfo", 9) ){
- if( strlen(zVal)==4 && 0==sqlite3_strnicmp(zVal, "fts3", 4) ){
- bNoDocsize = 1;
- }else{
- *pzErr = sqlite3_mprintf("unrecognized matchinfo: %s", zVal);
- rc = SQLITE_ERROR;
- }
}else{
- *pzErr = sqlite3_mprintf("unrecognized parameter: %s", z);
- rc = SQLITE_ERROR;
+ for(iOpt=0; iOpt<SizeofArray(aFts4Opt); iOpt++){
+ struct Fts4Option *pOp = &aFts4Opt[iOpt];
+ if( nKey==pOp->nOpt && !sqlite3_strnicmp(z, pOp->zOpt, pOp->nOpt) ){
+ break;
+ }
+ }
+ if( iOpt==SizeofArray(aFts4Opt) ){
+ *pzErr = sqlite3_mprintf("unrecognized parameter: %s", z);
+ rc = SQLITE_ERROR;
+ }else{
+ switch( iOpt ){
+ case 0: /* MATCHINFO */
+ if( strlen(zVal)!=4 || sqlite3_strnicmp(zVal, "fts3", 4) ){
+ *pzErr = sqlite3_mprintf("unrecognized matchinfo: %s", zVal);
+ rc = SQLITE_ERROR;
+ }
+ bNoDocsize = 1;
+ break;
+
+ case 1: /* PREFIX */
+ sqlite3_free(zPrefix);
+ zPrefix = zVal;
+ zVal = 0;
+ break;
+
+ case 2: /* COMPRESS */
+ sqlite3_free(zCompress);
+ zCompress = zVal;
+ zVal = 0;
+ break;
+
+ case 3: /* UNCOMPRESS */
+ sqlite3_free(zUncompress);
+ zUncompress = zVal;
+ zVal = 0;
+ break;
+
+ case 4: /* ORDER */
+ if( (strlen(zVal)!=3 || sqlite3_strnicmp(zVal, "asc", 3))
+ && (strlen(zVal)!=4 || sqlite3_strnicmp(zVal, "desc", 4))
+ ){
+ *pzErr = sqlite3_mprintf("unrecognized order: %s", zVal);
+ rc = SQLITE_ERROR;
+ }
+ bDescIdx = (zVal[0]=='d' || zVal[0]=='D');
+ break;
+
+ default: /* CONTENT */
+ assert( iOpt==5 );
+ sqlite3_free(zUncompress);
+ zContent = zVal;
+ zVal = 0;
+ break;
+ }
+ }
+ sqlite3_free(zVal);
}
- sqlite3_free(zVal);
}
/* Otherwise, the argument is a column name. */
@@ -109124,6 +117530,26 @@
aCol[nCol++] = z;
}
}
+
+ /* If a content=xxx option was specified, the following:
+ **
+ ** 1. Ignore any compress= and uncompress= options.
+ **
+ ** 2. If no column names were specified as part of the CREATE VIRTUAL
+ ** TABLE statement, use all columns from the content table.
+ */
+ if( rc==SQLITE_OK && zContent ){
+ sqlite3_free(zCompress);
+ sqlite3_free(zUncompress);
+ zCompress = 0;
+ zUncompress = 0;
+ if( nCol==0 ){
+ sqlite3_free((void*)aCol);
+ aCol = 0;
+ rc = fts3ContentColumns(db, argv[1], zContent, &aCol, &nCol, &nString);
+ }
+ assert( rc!=SQLITE_OK || nCol>0 );
+ }
if( rc!=SQLITE_OK ) goto fts3_init_out;
if( nCol==0 ){
@@ -109139,10 +117565,17 @@
}
assert( pTokenizer );
+ rc = fts3PrefixParameter(zPrefix, &nIndex, &aIndex);
+ if( rc==SQLITE_ERROR ){
+ assert( zPrefix );
+ *pzErr = sqlite3_mprintf("error parsing prefix parameter: %s", zPrefix);
+ }
+ if( rc!=SQLITE_OK ) goto fts3_init_out;
/* Allocate and populate the Fts3Table structure. */
- nByte = sizeof(Fts3Table) + /* Fts3Table */
+ nByte = sizeof(Fts3Table) + /* Fts3Table */
nCol * sizeof(char *) + /* azColumn */
+ nIndex * sizeof(struct Fts3Index) + /* aIndex */
nName + /* zName */
nDb + /* zDb */
nString; /* Space for azColumn strings */
@@ -109157,14 +117590,24 @@
p->nPendingData = 0;
p->azColumn = (char **)&p[1];
p->pTokenizer = pTokenizer;
- p->nNodeSize = 1000;
p->nMaxPendingData = FTS3_MAX_PENDING_DATA;
p->bHasDocsize = (isFts4 && bNoDocsize==0);
p->bHasStat = isFts4;
- fts3HashInit(&p->pendingTerms, FTS3_HASH_STRING, 1);
+ p->bDescIdx = bDescIdx;
+ p->zContentTbl = zContent;
+ zContent = 0;
+ TESTONLY( p->inTransaction = -1 );
+ TESTONLY( p->mxSavepoint = -1 );
+
+ p->aIndex = (struct Fts3Index *)&p->azColumn[nCol];
+ memcpy(p->aIndex, aIndex, sizeof(struct Fts3Index) * nIndex);
+ p->nIndex = nIndex;
+ for(i=0; i<nIndex; i++){
+ fts3HashInit(&p->aIndex[i].hPending, FTS3_HASH_STRING, 1);
+ }
/* Fill in the zName and zDb fields of the vtab structure. */
- zCsr = (char *)&p->azColumn[nCol];
+ zCsr = (char *)&p->aIndex[nIndex];
p->zName = zCsr;
memcpy(zCsr, argv[2], nName);
zCsr += nName;
@@ -109175,7 +117618,7 @@
/* Fill in the azColumn array */
for(iCol=0; iCol<nCol; iCol++){
char *z;
- int n;
+ int n = 0;
z = (char *)sqlite3Fts3NextToken(aCol[iCol], &n);
memcpy(zCsr, z, n);
zCsr[n] = '\0';
@@ -109185,6 +117628,15 @@
assert( zCsr <= &((char *)p)[nByte] );
}
+ if( (zCompress==0)!=(zUncompress==0) ){
+ char const *zMiss = (zCompress==0 ? "compress" : "uncompress");
+ rc = SQLITE_ERROR;
+ *pzErr = sqlite3_mprintf("missing %s parameter in fts4 constructor", zMiss);
+ }
+ p->zReadExprlist = fts3ReadExprList(p, zUncompress, &rc);
+ p->zWriteExprlist = fts3WriteExprList(p, zCompress, &rc);
+ if( rc!=SQLITE_OK ) goto fts3_init_out;
+
/* If this is an xCreate call, create the underlying tables in the
** database. TODO: For xConnect(), it could verify that said tables exist.
*/
@@ -109193,16 +117645,19 @@
}
/* Figure out the page-size for the database. This is required in order to
- ** estimate the cost of loading large doclists from the database (see
- ** function sqlite3Fts3SegReaderCost() for details).
- */
+ ** estimate the cost of loading large doclists from the database. */
fts3DatabasePageSize(&rc, p);
+ p->nNodeSize = p->nPgsz-35;
/* Declare the table schema to SQLite. */
fts3DeclareVtab(&rc, p);
fts3_init_out:
-
+ sqlite3_free(zPrefix);
+ sqlite3_free(aIndex);
+ sqlite3_free(zCompress);
+ sqlite3_free(zUncompress);
+ sqlite3_free(zContent);
sqlite3_free((void *)aCol);
if( rc!=SQLITE_OK ){
if( p ){
@@ -109211,6 +117666,7 @@
pTokenizer->pModule->xDestroy(pTokenizer);
}
}else{
+ assert( p->pSegments==0 );
*ppVTab = &p->base;
}
return rc;
@@ -109296,6 +117752,23 @@
pInfo->aConstraintUsage[iCons].argvIndex = 1;
pInfo->aConstraintUsage[iCons].omit = 1;
}
+
+ /* Regardless of the strategy selected, FTS can deliver rows in rowid (or
+ ** docid) order. Both ascending and descending are possible.
+ */
+ if( pInfo->nOrderBy==1 ){
+ struct sqlite3_index_orderby *pOrder = &pInfo->aOrderBy[0];
+ if( pOrder->iColumn<0 || pOrder->iColumn==p->nColumn+1 ){
+ if( pOrder->desc ){
+ pInfo->idxStr = "DESC";
+ }else{
+ pInfo->idxStr = "ASC";
+ }
+ pInfo->orderByConsumed = 1;
+ }
+ }
+
+ assert( p->pSegments==0 );
return SQLITE_OK;
}
@@ -109331,39 +117804,69 @@
sqlite3Fts3FreeDeferredTokens(pCsr);
sqlite3_free(pCsr->aDoclist);
sqlite3_free(pCsr->aMatchinfo);
+ assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 );
sqlite3_free(pCsr);
return SQLITE_OK;
}
/*
+** If pCsr->pStmt has not been prepared (i.e. if pCsr->pStmt==0), then
+** compose and prepare an SQL statement of the form:
+**
+** "SELECT <columns> FROM %_content WHERE rowid = ?"
+**
+** (or the equivalent for a content=xxx table) and set pCsr->pStmt to
+** it. If an error occurs, return an SQLite error code.
+**
+** Otherwise, set *ppStmt to point to pCsr->pStmt and return SQLITE_OK.
+*/
+static int fts3CursorSeekStmt(Fts3Cursor *pCsr, sqlite3_stmt **ppStmt){
+ int rc = SQLITE_OK;
+ if( pCsr->pStmt==0 ){
+ Fts3Table *p = (Fts3Table *)pCsr->base.pVtab;
+ char *zSql;
+ zSql = sqlite3_mprintf("SELECT %s WHERE rowid = ?", p->zReadExprlist);
+ if( !zSql ) return SQLITE_NOMEM;
+ rc = sqlite3_prepare_v2(p->db, zSql, -1, &pCsr->pStmt, 0);
+ sqlite3_free(zSql);
+ }
+ *ppStmt = pCsr->pStmt;
+ return rc;
+}
+
+/*
** Position the pCsr->pStmt statement so that it is on the row
** of the %_content table that contains the last match. Return
** SQLITE_OK on success.
*/
static int fts3CursorSeek(sqlite3_context *pContext, Fts3Cursor *pCsr){
+ int rc = SQLITE_OK;
if( pCsr->isRequireSeek ){
- pCsr->isRequireSeek = 0;
- sqlite3_bind_int64(pCsr->pStmt, 1, pCsr->iPrevId);
- if( SQLITE_ROW==sqlite3_step(pCsr->pStmt) ){
- return SQLITE_OK;
- }else{
- int rc = sqlite3_reset(pCsr->pStmt);
- if( rc==SQLITE_OK ){
- /* If no row was found and no error has occured, then the %_content
- ** table is missing a row that is present in the full-text index.
- ** The data structures are corrupt.
- */
- rc = SQLITE_CORRUPT;
+ sqlite3_stmt *pStmt = 0;
+
+ rc = fts3CursorSeekStmt(pCsr, &pStmt);
+ if( rc==SQLITE_OK ){
+ sqlite3_bind_int64(pCsr->pStmt, 1, pCsr->iPrevId);
+ pCsr->isRequireSeek = 0;
+ if( SQLITE_ROW==sqlite3_step(pCsr->pStmt) ){
+ return SQLITE_OK;
+ }else{
+ rc = sqlite3_reset(pCsr->pStmt);
+ if( rc==SQLITE_OK && ((Fts3Table *)pCsr->base.pVtab)->zContentTbl==0 ){
+ /* If no row was found and no error has occured, then the %_content
+ ** table is missing a row that is present in the full-text index.
+ ** The data structures are corrupt. */
+ rc = FTS_CORRUPT_VTAB;
+ pCsr->isEof = 1;
+ }
}
- pCsr->isEof = 1;
- if( pContext ){
- sqlite3_result_error_code(pContext, rc);
- }
- return rc;
}
- }else{
- return SQLITE_OK;
}
+
+ if( rc!=SQLITE_OK && pContext ){
+ sqlite3_result_error_code(pContext, rc);
+ }
+ return rc;
}
/*
@@ -109413,7 +117916,7 @@
zCsr += sqlite3Fts3GetVarint(zCsr, &iChild);
zCsr += sqlite3Fts3GetVarint(zCsr, &iChild);
if( zCsr>zEnd ){
- return SQLITE_CORRUPT;
+ return FTS_CORRUPT_VTAB;
}
while( zCsr<zEnd && (piFirst || piLast) ){
@@ -109431,7 +117934,7 @@
zCsr += sqlite3Fts3GetVarint32(zCsr, &nSuffix);
if( nPrefix<0 || nSuffix<0 || &zCsr[nSuffix]>zEnd ){
- rc = SQLITE_CORRUPT;
+ rc = FTS_CORRUPT_VTAB;
goto finish_scan;
}
if( nPrefix+nSuffix>nAlloc ){
@@ -109444,6 +117947,7 @@
}
zBuffer = zNew;
}
+ assert( zBuffer );
memcpy(&zBuffer[nPrefix], zCsr, nSuffix);
nBuffer = nPrefix + nSuffix;
zCsr += nSuffix;
@@ -109524,7 +118028,7 @@
int nBlob; /* Size of zBlob in bytes */
if( piLeaf && piLeaf2 && (*piLeaf!=*piLeaf2) ){
- rc = sqlite3Fts3ReadBlock(p, *piLeaf, &zBlob, &nBlob);
+ rc = sqlite3Fts3ReadBlock(p, *piLeaf, &zBlob, &nBlob, 0);
if( rc==SQLITE_OK ){
rc = fts3SelectLeaf(p, zTerm, nTerm, zBlob, nBlob, piLeaf, 0);
}
@@ -109534,7 +118038,7 @@
}
if( rc==SQLITE_OK ){
- rc = sqlite3Fts3ReadBlock(p, piLeaf ? *piLeaf : *piLeaf2, &zBlob, &nBlob);
+ rc = sqlite3Fts3ReadBlock(p, piLeaf?*piLeaf:*piLeaf2, &zBlob, &nBlob, 0);
}
if( rc==SQLITE_OK ){
rc = fts3SelectLeaf(p, zTerm, nTerm, zBlob, nBlob, piLeaf, piLeaf2);
@@ -109772,8 +118276,6 @@
}
/*
-** nToken==1 searches for adjacent positions.
-**
** This function is used to merge two position lists into one. When it is
** called, *pp1 and *pp2 must both point to position lists. A position-list is
** the part of a doclist that follows each document id. For example, if a row
@@ -109793,6 +118295,8 @@
** *pp1 so that (pos(*pp2)>pos(*pp1) && pos(*pp2)-pos(*pp1)<=nToken). i.e.
** when the *pp1 token appears before the *pp2 token, but not more than nToken
** slots before it.
+**
+** e.g. nToken==1 searches for adjacent positions.
*/
static int fts3PoslistPhraseMerge(
char **pp, /* IN/OUT: Preallocated output buffer */
@@ -109802,7 +118306,7 @@
char **pp1, /* IN/OUT: Left input list */
char **pp2 /* IN/OUT: Right input list */
){
- char *p = (pp ? *pp : 0);
+ char *p = *pp;
char *p1 = *pp1;
char *p2 = *pp2;
int iCol1 = 0;
@@ -109811,7 +118315,7 @@
/* Never set both isSaveLeft and isExact for the same invocation. */
assert( isSaveLeft==0 || isExact==0 );
- assert( *p1!=0 && *p2!=0 );
+ assert( p!=0 && *p1!=0 && *p2!=0 );
if( *p1==POS_COLUMN ){
p1++;
p1 += sqlite3Fts3GetVarint32(p1, &iCol1);
@@ -109828,7 +118332,7 @@
sqlite3_int64 iPos1 = 0;
sqlite3_int64 iPos2 = 0;
- if( pp && iCol1 ){
+ if( iCol1 ){
*p++ = POS_COLUMN;
p += sqlite3Fts3PutVarint(p, iCol1);
}
@@ -109843,16 +118347,10 @@
|| (isExact==0 && iPos2>iPos1 && iPos2<=iPos1+nToken)
){
sqlite3_int64 iSave;
- if( !pp ){
- fts3PoslistCopy(0, &p2);
- fts3PoslistCopy(0, &p1);
- *pp1 = p1;
- *pp2 = p2;
- return 1;
- }
iSave = isSaveLeft ? iPos1 : iPos2;
fts3PutDeltaVarint(&p, &iPrev, iSave+2); iPrev -= 2;
pSave = 0;
+ assert( p );
}
if( (!isSaveLeft && iPos2<=(iPos1+nToken)) || iPos2<=iPos1 ){
if( (*p2&0xFE)==0 ) break;
@@ -109901,7 +118399,7 @@
fts3PoslistCopy(0, &p1);
*pp1 = p1;
*pp2 = p2;
- if( !pp || *pp==p ){
+ if( *pp==p ){
return 0;
}
*p++ = 0x00;
@@ -109910,7 +118408,19 @@
}
/*
-** Merge two position-lists as required by the NEAR operator.
+** Merge two position-lists as required by the NEAR operator. The argument
+** position lists correspond to the left and right phrases of an expression
+** like:
+**
+** "phrase 1" NEAR "phrase number 2"
+**
+** Position list *pp1 corresponds to the left-hand side of the NEAR
+** expression and *pp2 to the right. As usual, the indexes in the position
+** lists are the offsets of the last token in each phrase (tokens "1" and "2"
+** in the example above).
+**
+** The output position list - written to *pp - is a copy of *pp2 with those
+** entries that are not sufficiently NEAR entries in *pp1 removed.
*/
static int fts3PoslistNearMerge(
char **pp, /* Output buffer */
@@ -109923,226 +118433,325 @@
char *p1 = *pp1;
char *p2 = *pp2;
- if( !pp ){
- if( fts3PoslistPhraseMerge(0, nRight, 0, 0, pp1, pp2) ) return 1;
- *pp1 = p1;
- *pp2 = p2;
- return fts3PoslistPhraseMerge(0, nLeft, 0, 0, pp2, pp1);
+ char *pTmp1 = aTmp;
+ char *pTmp2;
+ char *aTmp2;
+ int res = 1;
+
+ fts3PoslistPhraseMerge(&pTmp1, nRight, 0, 0, pp1, pp2);
+ aTmp2 = pTmp2 = pTmp1;
+ *pp1 = p1;
+ *pp2 = p2;
+ fts3PoslistPhraseMerge(&pTmp2, nLeft, 1, 0, pp2, pp1);
+ if( pTmp1!=aTmp && pTmp2!=aTmp2 ){
+ fts3PoslistMerge(pp, &aTmp, &aTmp2);
+ }else if( pTmp1!=aTmp ){
+ fts3PoslistCopy(pp, &aTmp);
+ }else if( pTmp2!=aTmp2 ){
+ fts3PoslistCopy(pp, &aTmp2);
}else{
- char *pTmp1 = aTmp;
- char *pTmp2;
- char *aTmp2;
- int res = 1;
+ res = 0;
+ }
- fts3PoslistPhraseMerge(&pTmp1, nRight, 0, 0, pp1, pp2);
- aTmp2 = pTmp2 = pTmp1;
- *pp1 = p1;
- *pp2 = p2;
- fts3PoslistPhraseMerge(&pTmp2, nLeft, 1, 0, pp2, pp1);
- if( pTmp1!=aTmp && pTmp2!=aTmp2 ){
- fts3PoslistMerge(pp, &aTmp, &aTmp2);
- }else if( pTmp1!=aTmp ){
- fts3PoslistCopy(pp, &aTmp);
- }else if( pTmp2!=aTmp2 ){
- fts3PoslistCopy(pp, &aTmp2);
+ return res;
+}
+
+/*
+** An instance of this function is used to merge together the (potentially
+** large number of) doclists for each term that matches a prefix query.
+** See function fts3TermSelectMerge() for details.
+*/
+typedef struct TermSelect TermSelect;
+struct TermSelect {
+ char *aaOutput[16]; /* Malloc'd output buffers */
+ int anOutput[16]; /* Size each output buffer in bytes */
+};
+
+/*
+** This function is used to read a single varint from a buffer. Parameter
+** pEnd points 1 byte past the end of the buffer. When this function is
+** called, if *pp points to pEnd or greater, then the end of the buffer
+** has been reached. In this case *pp is set to 0 and the function returns.
+**
+** If *pp does not point to or past pEnd, then a single varint is read
+** from *pp. *pp is then set to point 1 byte past the end of the read varint.
+**
+** If bDescIdx is false, the value read is added to *pVal before returning.
+** If it is true, the value read is subtracted from *pVal before this
+** function returns.
+*/
+static void fts3GetDeltaVarint3(
+ char **pp, /* IN/OUT: Point to read varint from */
+ char *pEnd, /* End of buffer */
+ int bDescIdx, /* True if docids are descending */
+ sqlite3_int64 *pVal /* IN/OUT: Integer value */
+){
+ if( *pp>=pEnd ){
+ *pp = 0;
+ }else{
+ sqlite3_int64 iVal;
+ *pp += sqlite3Fts3GetVarint(*pp, &iVal);
+ if( bDescIdx ){
+ *pVal -= iVal;
}else{
- res = 0;
+ *pVal += iVal;
}
-
- return res;
}
}
/*
-** Values that may be used as the first parameter to fts3DoclistMerge().
+** This function is used to write a single varint to a buffer. The varint
+** is written to *pp. Before returning, *pp is set to point 1 byte past the
+** end of the value written.
+**
+** If *pbFirst is zero when this function is called, the value written to
+** the buffer is that of parameter iVal.
+**
+** If *pbFirst is non-zero when this function is called, then the value
+** written is either (iVal-*piPrev) (if bDescIdx is zero) or (*piPrev-iVal)
+** (if bDescIdx is non-zero).
+**
+** Before returning, this function always sets *pbFirst to 1 and *piPrev
+** to the value of parameter iVal.
*/
-#define MERGE_NOT 2 /* D + D -> D */
-#define MERGE_AND 3 /* D + D -> D */
-#define MERGE_OR 4 /* D + D -> D */
-#define MERGE_POS_OR 5 /* P + P -> P */
-#define MERGE_PHRASE 6 /* P + P -> D */
-#define MERGE_POS_PHRASE 7 /* P + P -> P */
-#define MERGE_NEAR 8 /* P + P -> D */
-#define MERGE_POS_NEAR 9 /* P + P -> P */
+static void fts3PutDeltaVarint3(
+ char **pp, /* IN/OUT: Output pointer */
+ int bDescIdx, /* True for descending docids */
+ sqlite3_int64 *piPrev, /* IN/OUT: Previous value written to list */
+ int *pbFirst, /* IN/OUT: True after first int written */
+ sqlite3_int64 iVal /* Write this value to the list */
+){
+ sqlite3_int64 iWrite;
+ if( bDescIdx==0 || *pbFirst==0 ){
+ iWrite = iVal - *piPrev;
+ }else{
+ iWrite = *piPrev - iVal;
+ }
+ assert( *pbFirst || *piPrev==0 );
+ assert( *pbFirst==0 || iWrite>0 );
+ *pp += sqlite3Fts3PutVarint(*pp, iWrite);
+ *piPrev = iVal;
+ *pbFirst = 1;
+}
+
/*
-** Merge the two doclists passed in buffer a1 (size n1 bytes) and a2
-** (size n2 bytes). The output is written to pre-allocated buffer aBuffer,
-** which is guaranteed to be large enough to hold the results. The number
-** of bytes written to aBuffer is stored in *pnBuffer before returning.
+** This macro is used by various functions that merge doclists. The two
+** arguments are 64-bit docid values. If the value of the stack variable
+** bDescDoclist is 0 when this macro is invoked, then it returns (i1-i2).
+** Otherwise, (i2-i1).
**
-** If successful, SQLITE_OK is returned. Otherwise, if a malloc error
-** occurs while allocating a temporary buffer as part of the merge operation,
-** SQLITE_NOMEM is returned.
+** Using this makes it easier to write code that can merge doclists that are
+** sorted in either ascending or descending order.
*/
-static int fts3DoclistMerge(
- int mergetype, /* One of the MERGE_XXX constants */
- int nParam1, /* Used by MERGE_NEAR and MERGE_POS_NEAR */
- int nParam2, /* Used by MERGE_NEAR and MERGE_POS_NEAR */
- char *aBuffer, /* Pre-allocated output buffer */
- int *pnBuffer, /* OUT: Bytes written to aBuffer */
- char *a1, /* Buffer containing first doclist */
- int n1, /* Size of buffer a1 */
- char *a2, /* Buffer containing second doclist */
- int n2, /* Size of buffer a2 */
- int *pnDoc /* OUT: Number of docids in output */
+#define DOCID_CMP(i1, i2) ((bDescDoclist?-1:1) * (i1-i2))
+
+/*
+** This function does an "OR" merge of two doclists (output contains all
+** positions contained in either argument doclist). If the docids in the
+** input doclists are sorted in ascending order, parameter bDescDoclist
+** should be false. If they are sorted in ascending order, it should be
+** passed a non-zero value.
+**
+** If no error occurs, *paOut is set to point at an sqlite3_malloc'd buffer
+** containing the output doclist and SQLITE_OK is returned. In this case
+** *pnOut is set to the number of bytes in the output doclist.
+**
+** If an error occurs, an SQLite error code is returned. The output values
+** are undefined in this case.
+*/
+static int fts3DoclistOrMerge(
+ int bDescDoclist, /* True if arguments are desc */
+ char *a1, int n1, /* First doclist */
+ char *a2, int n2, /* Second doclist */
+ char **paOut, int *pnOut /* OUT: Malloc'd doclist */
){
sqlite3_int64 i1 = 0;
sqlite3_int64 i2 = 0;
sqlite3_int64 iPrev = 0;
-
- char *p = aBuffer;
- char *p1 = a1;
- char *p2 = a2;
char *pEnd1 = &a1[n1];
char *pEnd2 = &a2[n2];
- int nDoc = 0;
+ char *p1 = a1;
+ char *p2 = a2;
+ char *p;
+ char *aOut;
+ int bFirstOut = 0;
- assert( mergetype==MERGE_OR || mergetype==MERGE_POS_OR
- || mergetype==MERGE_AND || mergetype==MERGE_NOT
- || mergetype==MERGE_PHRASE || mergetype==MERGE_POS_PHRASE
- || mergetype==MERGE_NEAR || mergetype==MERGE_POS_NEAR
- );
+ *paOut = 0;
+ *pnOut = 0;
- if( !aBuffer ){
- *pnBuffer = 0;
- return SQLITE_NOMEM;
- }
+ /* Allocate space for the output. Both the input and output doclists
+ ** are delta encoded. If they are in ascending order (bDescDoclist==0),
+ ** then the first docid in each list is simply encoded as a varint. For
+ ** each subsequent docid, the varint stored is the difference between the
+ ** current and previous docid (a positive number - since the list is in
+ ** ascending order).
+ **
+ ** The first docid written to the output is therefore encoded using the
+ ** same number of bytes as it is in whichever of the input lists it is
+ ** read from. And each subsequent docid read from the same input list
+ ** consumes either the same or less bytes as it did in the input (since
+ ** the difference between it and the previous value in the output must
+ ** be a positive value less than or equal to the delta value read from
+ ** the input list). The same argument applies to all but the first docid
+ ** read from the 'other' list. And to the contents of all position lists
+ ** that will be copied and merged from the input to the output.
+ **
+ ** However, if the first docid copied to the output is a negative number,
+ ** then the encoding of the first docid from the 'other' input list may
+ ** be larger in the output than it was in the input (since the delta value
+ ** may be a larger positive integer than the actual docid).
+ **
+ ** The space required to store the output is therefore the sum of the
+ ** sizes of the two inputs, plus enough space for exactly one of the input
+ ** docids to grow.
+ **
+ ** A symetric argument may be made if the doclists are in descending
+ ** order.
+ */
+ aOut = sqlite3_malloc(n1+n2+FTS3_VARINT_MAX-1);
+ if( !aOut ) return SQLITE_NOMEM;
- /* Read the first docid from each doclist */
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
+ p = aOut;
+ fts3GetDeltaVarint3(&p1, pEnd1, 0, &i1);
+ fts3GetDeltaVarint3(&p2, pEnd2, 0, &i2);
+ while( p1 || p2 ){
+ sqlite3_int64 iDiff = DOCID_CMP(i1, i2);
- switch( mergetype ){
- case MERGE_OR:
- case MERGE_POS_OR:
- while( p1 || p2 ){
- if( p2 && p1 && i1==i2 ){
- fts3PutDeltaVarint(&p, &iPrev, i1);
- if( mergetype==MERGE_POS_OR ) fts3PoslistMerge(&p, &p1, &p2);
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }else if( !p2 || (p1 && i1<i2) ){
- fts3PutDeltaVarint(&p, &iPrev, i1);
- if( mergetype==MERGE_POS_OR ) fts3PoslistCopy(&p, &p1);
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- }else{
- fts3PutDeltaVarint(&p, &iPrev, i2);
- if( mergetype==MERGE_POS_OR ) fts3PoslistCopy(&p, &p2);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }
- }
- break;
-
- case MERGE_AND:
- while( p1 && p2 ){
- if( i1==i2 ){
- fts3PutDeltaVarint(&p, &iPrev, i1);
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- nDoc++;
- }else if( i1<i2 ){
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- }else{
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }
- }
- break;
-
- case MERGE_NOT:
- while( p1 ){
- if( p2 && i1==i2 ){
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }else if( !p2 || i1<i2 ){
- fts3PutDeltaVarint(&p, &iPrev, i1);
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- }else{
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }
- }
- break;
-
- case MERGE_POS_PHRASE:
- case MERGE_PHRASE: {
- char **ppPos = (mergetype==MERGE_PHRASE ? 0 : &p);
- while( p1 && p2 ){
- if( i1==i2 ){
- char *pSave = p;
- sqlite3_int64 iPrevSave = iPrev;
- fts3PutDeltaVarint(&p, &iPrev, i1);
- if( 0==fts3PoslistPhraseMerge(ppPos, nParam1, 0, 1, &p1, &p2) ){
- p = pSave;
- iPrev = iPrevSave;
- }else{
- nDoc++;
- }
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }else if( i1<i2 ){
- fts3PoslistCopy(0, &p1);
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- }else{
- fts3PoslistCopy(0, &p2);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }
- }
- break;
- }
-
- default: assert( mergetype==MERGE_POS_NEAR || mergetype==MERGE_NEAR ); {
- char *aTmp = 0;
- char **ppPos = 0;
-
- if( mergetype==MERGE_POS_NEAR ){
- ppPos = &p;
- aTmp = sqlite3_malloc(2*(n1+n2+1));
- if( !aTmp ){
- return SQLITE_NOMEM;
- }
- }
-
- while( p1 && p2 ){
- if( i1==i2 ){
- char *pSave = p;
- sqlite3_int64 iPrevSave = iPrev;
- fts3PutDeltaVarint(&p, &iPrev, i1);
-
- if( !fts3PoslistNearMerge(ppPos, aTmp, nParam1, nParam2, &p1, &p2) ){
- iPrev = iPrevSave;
- p = pSave;
- }
-
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }else if( i1<i2 ){
- fts3PoslistCopy(0, &p1);
- fts3GetDeltaVarint2(&p1, pEnd1, &i1);
- }else{
- fts3PoslistCopy(0, &p2);
- fts3GetDeltaVarint2(&p2, pEnd2, &i2);
- }
- }
- sqlite3_free(aTmp);
- break;
+ if( p2 && p1 && iDiff==0 ){
+ fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i1);
+ fts3PoslistMerge(&p, &p1, &p2);
+ fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1);
+ fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2);
+ }else if( !p2 || (p1 && iDiff<0) ){
+ fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i1);
+ fts3PoslistCopy(&p, &p1);
+ fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1);
+ }else{
+ fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i2);
+ fts3PoslistCopy(&p, &p2);
+ fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2);
}
}
- if( pnDoc ) *pnDoc = nDoc;
- *pnBuffer = (int)(p-aBuffer);
+ *paOut = aOut;
+ *pnOut = (p-aOut);
+ assert( *pnOut<=n1+n2+FTS3_VARINT_MAX-1 );
return SQLITE_OK;
}
-/*
-** A pointer to an instance of this structure is used as the context
-** argument to sqlite3Fts3SegReaderIterate()
+/*
+** This function does a "phrase" merge of two doclists. In a phrase merge,
+** the output contains a copy of each position from the right-hand input
+** doclist for which there is a position in the left-hand input doclist
+** exactly nDist tokens before it.
+**
+** If the docids in the input doclists are sorted in ascending order,
+** parameter bDescDoclist should be false. If they are sorted in ascending
+** order, it should be passed a non-zero value.
+**
+** The right-hand input doclist is overwritten by this function.
*/
-typedef struct TermSelect TermSelect;
-struct TermSelect {
- int isReqPos;
- char *aaOutput[16]; /* Malloc'd output buffer */
- int anOutput[16]; /* Size of output in bytes */
-};
+static void fts3DoclistPhraseMerge(
+ int bDescDoclist, /* True if arguments are desc */
+ int nDist, /* Distance from left to right (1=adjacent) */
+ char *aLeft, int nLeft, /* Left doclist */
+ char *aRight, int *pnRight /* IN/OUT: Right/output doclist */
+){
+ sqlite3_int64 i1 = 0;
+ sqlite3_int64 i2 = 0;
+ sqlite3_int64 iPrev = 0;
+ char *pEnd1 = &aLeft[nLeft];
+ char *pEnd2 = &aRight[*pnRight];
+ char *p1 = aLeft;
+ char *p2 = aRight;
+ char *p;
+ int bFirstOut = 0;
+ char *aOut = aRight;
+
+ assert( nDist>0 );
+
+ p = aOut;
+ fts3GetDeltaVarint3(&p1, pEnd1, 0, &i1);
+ fts3GetDeltaVarint3(&p2, pEnd2, 0, &i2);
+
+ while( p1 && p2 ){
+ sqlite3_int64 iDiff = DOCID_CMP(i1, i2);
+ if( iDiff==0 ){
+ char *pSave = p;
+ sqlite3_int64 iPrevSave = iPrev;
+ int bFirstOutSave = bFirstOut;
+
+ fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i1);
+ if( 0==fts3PoslistPhraseMerge(&p, nDist, 0, 1, &p1, &p2) ){
+ p = pSave;
+ iPrev = iPrevSave;
+ bFirstOut = bFirstOutSave;
+ }
+ fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1);
+ fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2);
+ }else if( iDiff<0 ){
+ fts3PoslistCopy(0, &p1);
+ fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1);
+ }else{
+ fts3PoslistCopy(0, &p2);
+ fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2);
+ }
+ }
+
+ *pnRight = p - aOut;
+}
+
+/*
+** Argument pList points to a position list nList bytes in size. This
+** function checks to see if the position list contains any entries for
+** a token in position 0 (of any column). If so, it writes argument iDelta
+** to the output buffer pOut, followed by a position list consisting only
+** of the entries from pList at position 0, and terminated by an 0x00 byte.
+** The value returned is the number of bytes written to pOut (if any).
+*/
+SQLITE_PRIVATE int sqlite3Fts3FirstFilter(
+ sqlite3_int64 iDelta, /* Varint that may be written to pOut */
+ char *pList, /* Position list (no 0x00 term) */
+ int nList, /* Size of pList in bytes */
+ char *pOut /* Write output here */
+){
+ int nOut = 0;
+ int bWritten = 0; /* True once iDelta has been written */
+ char *p = pList;
+ char *pEnd = &pList[nList];
+
+ if( *p!=0x01 ){
+ if( *p==0x02 ){
+ nOut += sqlite3Fts3PutVarint(&pOut[nOut], iDelta);
+ pOut[nOut++] = 0x02;
+ bWritten = 1;
+ }
+ fts3ColumnlistCopy(0, &p);
+ }
+
+ while( p<pEnd && *p==0x01 ){
+ sqlite3_int64 iCol;
+ p++;
+ p += sqlite3Fts3GetVarint(p, &iCol);
+ if( *p==0x02 ){
+ if( bWritten==0 ){
+ nOut += sqlite3Fts3PutVarint(&pOut[nOut], iDelta);
+ bWritten = 1;
+ }
+ pOut[nOut++] = 0x01;
+ nOut += sqlite3Fts3PutVarint(&pOut[nOut], iCol);
+ pOut[nOut++] = 0x02;
+ }
+ fts3ColumnlistCopy(0, &p);
+ }
+ if( bWritten ){
+ pOut[nOut++] = 0x00;
+ }
+
+ return nOut;
+}
+
/*
** Merge all doclists in the TermSelect.aaOutput[] array into a single
@@ -110153,8 +118762,7 @@
** the responsibility of the caller to free any doclists left in the
** TermSelect.aaOutput[] array.
*/
-static int fts3TermSelectMerge(TermSelect *pTS){
- int mergetype = (pTS->isReqPos ? MERGE_POS_OR : MERGE_OR);
+static int fts3TermSelectFinishMerge(Fts3Table *p, TermSelect *pTS){
char *aOut = 0;
int nOut = 0;
int i;
@@ -110169,15 +118777,17 @@
nOut = pTS->anOutput[i];
pTS->aaOutput[i] = 0;
}else{
- int nNew = nOut + pTS->anOutput[i];
- char *aNew = sqlite3_malloc(nNew);
- if( !aNew ){
- sqlite3_free(aOut);
- return SQLITE_NOMEM;
- }
- fts3DoclistMerge(mergetype, 0, 0,
- aNew, &nNew, pTS->aaOutput[i], pTS->anOutput[i], aOut, nOut, 0
+ int nNew;
+ char *aNew;
+
+ int rc = fts3DoclistOrMerge(p->bDescIdx,
+ pTS->aaOutput[i], pTS->anOutput[i], aOut, nOut, &aNew, &nNew
);
+ if( rc!=SQLITE_OK ){
+ sqlite3_free(aOut);
+ return rc;
+ }
+
sqlite3_free(pTS->aaOutput[i]);
sqlite3_free(aOut);
pTS->aaOutput[i] = 0;
@@ -110193,29 +118803,28 @@
}
/*
-** This function is used as the sqlite3Fts3SegReaderIterate() callback when
-** querying the full-text index for a doclist associated with a term or
-** term-prefix.
+** Merge the doclist aDoclist/nDoclist into the TermSelect object passed
+** as the first argument. The merge is an "OR" merge (see function
+** fts3DoclistOrMerge() for details).
+**
+** This function is called with the doclist for each term that matches
+** a queried prefix. It merges all these doclists into one, the doclist
+** for the specified prefix. Since there can be a very large number of
+** doclists to merge, the merging is done pair-wise using the TermSelect
+** object.
+**
+** This function returns SQLITE_OK if the merge is successful, or an
+** SQLite error code (SQLITE_NOMEM) if an error occurs.
*/
-static int fts3TermSelectCb(
- Fts3Table *p, /* Virtual table object */
- void *pContext, /* Pointer to TermSelect structure */
- char *zTerm,
- int nTerm,
- char *aDoclist,
- int nDoclist
+static int fts3TermSelectMerge(
+ Fts3Table *p, /* FTS table handle */
+ TermSelect *pTS, /* TermSelect object to merge into */
+ char *aDoclist, /* Pointer to doclist */
+ int nDoclist /* Size of aDoclist in bytes */
){
- TermSelect *pTS = (TermSelect *)pContext;
-
- UNUSED_PARAMETER(p);
- UNUSED_PARAMETER(zTerm);
- UNUSED_PARAMETER(nTerm);
-
if( pTS->aaOutput[0]==0 ){
/* If this is the first term selected, copy the doclist to the output
- ** buffer using memcpy(). TODO: Add a way to transfer control of the
- ** aDoclist buffer from the caller so as to avoid the memcpy().
- */
+ ** buffer using memcpy(). */
pTS->aaOutput[0] = sqlite3_malloc(nDoclist);
pTS->anOutput[0] = nDoclist;
if( pTS->aaOutput[0] ){
@@ -110224,247 +118833,298 @@
return SQLITE_NOMEM;
}
}else{
- int mergetype = (pTS->isReqPos ? MERGE_POS_OR : MERGE_OR);
char *aMerge = aDoclist;
int nMerge = nDoclist;
int iOut;
for(iOut=0; iOut<SizeofArray(pTS->aaOutput); iOut++){
- char *aNew;
- int nNew;
if( pTS->aaOutput[iOut]==0 ){
assert( iOut>0 );
pTS->aaOutput[iOut] = aMerge;
pTS->anOutput[iOut] = nMerge;
break;
- }
+ }else{
+ char *aNew;
+ int nNew;
- nNew = nMerge + pTS->anOutput[iOut];
- aNew = sqlite3_malloc(nNew);
- if( !aNew ){
- if( aMerge!=aDoclist ){
- sqlite3_free(aMerge);
+ int rc = fts3DoclistOrMerge(p->bDescIdx, aMerge, nMerge,
+ pTS->aaOutput[iOut], pTS->anOutput[iOut], &aNew, &nNew
+ );
+ if( rc!=SQLITE_OK ){
+ if( aMerge!=aDoclist ) sqlite3_free(aMerge);
+ return rc;
}
- return SQLITE_NOMEM;
- }
- fts3DoclistMerge(mergetype, 0, 0, aNew, &nNew,
- pTS->aaOutput[iOut], pTS->anOutput[iOut], aMerge, nMerge, 0
- );
- if( iOut>0 ) sqlite3_free(aMerge);
- sqlite3_free(pTS->aaOutput[iOut]);
- pTS->aaOutput[iOut] = 0;
-
- aMerge = aNew;
- nMerge = nNew;
- if( (iOut+1)==SizeofArray(pTS->aaOutput) ){
- pTS->aaOutput[iOut] = aMerge;
- pTS->anOutput[iOut] = nMerge;
+ if( aMerge!=aDoclist ) sqlite3_free(aMerge);
+ sqlite3_free(pTS->aaOutput[iOut]);
+ pTS->aaOutput[iOut] = 0;
+
+ aMerge = aNew;
+ nMerge = nNew;
+ if( (iOut+1)==SizeofArray(pTS->aaOutput) ){
+ pTS->aaOutput[iOut] = aMerge;
+ pTS->anOutput[iOut] = nMerge;
+ }
}
}
}
return SQLITE_OK;
}
-static int fts3DeferredTermSelect(
- Fts3DeferredToken *pToken, /* Phrase token */
- int isTermPos, /* True to include positions */
- int *pnOut, /* OUT: Size of list */
- char **ppOut /* OUT: Body of list */
-){
- char *aSource;
- int nSource;
-
- aSource = sqlite3Fts3DeferredDoclist(pToken, &nSource);
- if( !aSource ){
- *pnOut = 0;
- *ppOut = 0;
- }else if( isTermPos ){
- *ppOut = sqlite3_malloc(nSource);
- if( !*ppOut ) return SQLITE_NOMEM;
- memcpy(*ppOut, aSource, nSource);
- *pnOut = nSource;
- }else{
- sqlite3_int64 docid;
- *pnOut = sqlite3Fts3GetVarint(aSource, &docid);
- *ppOut = sqlite3_malloc(*pnOut);
- if( !*ppOut ) return SQLITE_NOMEM;
- sqlite3Fts3PutVarint(*ppOut, docid);
- }
-
- return SQLITE_OK;
-}
-
/*
-** An Fts3SegReaderArray is used to store an array of Fts3SegReader objects.
-** Elements are added to the array using fts3SegReaderArrayAdd().
+** Append SegReader object pNew to the end of the pCsr->apSegment[] array.
*/
-struct Fts3SegReaderArray {
- int nSegment; /* Number of valid entries in apSegment[] */
- int nAlloc; /* Allocated size of apSegment[] */
- int nCost; /* The cost of executing SegReaderIterate() */
- Fts3SegReader *apSegment[1]; /* Array of seg-reader objects */
-};
-
-
-/*
-** Free an Fts3SegReaderArray object. Also free all seg-readers in the
-** array (using sqlite3Fts3SegReaderFree()).
-*/
-static void fts3SegReaderArrayFree(Fts3SegReaderArray *pArray){
- if( pArray ){
- int i;
- for(i=0; i<pArray->nSegment; i++){
- sqlite3Fts3SegReaderFree(pArray->apSegment[i]);
- }
- sqlite3_free(pArray);
- }
-}
-
-static int fts3SegReaderArrayAdd(
- Fts3SegReaderArray **ppArray,
+static int fts3SegReaderCursorAppend(
+ Fts3MultiSegReader *pCsr,
Fts3SegReader *pNew
){
- Fts3SegReaderArray *pArray = *ppArray;
-
- if( !pArray || pArray->nAlloc==pArray->nSegment ){
- int nNew = (pArray ? pArray->nAlloc+16 : 16);
- pArray = (Fts3SegReaderArray *)sqlite3_realloc(pArray,
- sizeof(Fts3SegReaderArray) + (nNew-1) * sizeof(Fts3SegReader*)
- );
- if( !pArray ){
+ if( (pCsr->nSegment%16)==0 ){
+ Fts3SegReader **apNew;
+ int nByte = (pCsr->nSegment + 16)*sizeof(Fts3SegReader*);
+ apNew = (Fts3SegReader **)sqlite3_realloc(pCsr->apSegment, nByte);
+ if( !apNew ){
sqlite3Fts3SegReaderFree(pNew);
return SQLITE_NOMEM;
}
- if( nNew==16 ){
- pArray->nSegment = 0;
- pArray->nCost = 0;
- }
- pArray->nAlloc = nNew;
- *ppArray = pArray;
+ pCsr->apSegment = apNew;
}
-
- pArray->apSegment[pArray->nSegment++] = pNew;
+ pCsr->apSegment[pCsr->nSegment++] = pNew;
return SQLITE_OK;
}
-static int fts3TermSegReaderArray(
- Fts3Cursor *pCsr, /* Virtual table cursor handle */
+/*
+** Add seg-reader objects to the Fts3MultiSegReader object passed as the
+** 8th argument.
+**
+** This function returns SQLITE_OK if successful, or an SQLite error code
+** otherwise.
+*/
+static int fts3SegReaderCursor(
+ Fts3Table *p, /* FTS3 table handle */
+ int iIndex, /* Index to search (from 0 to p->nIndex-1) */
+ int iLevel, /* Level of segments to scan */
const char *zTerm, /* Term to query for */
int nTerm, /* Size of zTerm in bytes */
int isPrefix, /* True for a prefix search */
- Fts3SegReaderArray **ppArray /* OUT: Allocated seg-reader array */
+ int isScan, /* True to scan from zTerm to EOF */
+ Fts3MultiSegReader *pCsr /* Cursor object to populate */
){
- Fts3Table *p = (Fts3Table *)pCsr->base.pVtab;
- int rc; /* Return code */
- Fts3SegReaderArray *pArray = 0; /* Array object to build */
- Fts3SegReader *pReader = 0; /* Seg-reader to add to pArray */
- sqlite3_stmt *pStmt = 0; /* SQL statement to scan %_segdir table */
- int iAge = 0; /* Used to assign ages to segments */
+ int rc = SQLITE_OK; /* Error code */
+ sqlite3_stmt *pStmt = 0; /* Statement to iterate through segments */
+ int rc2; /* Result of sqlite3_reset() */
- /* Allocate a seg-reader to scan the pending terms, if any. */
- rc = sqlite3Fts3SegReaderPending(p, zTerm, nTerm, isPrefix, &pReader);
- if( rc==SQLITE_OK && pReader ) {
- rc = fts3SegReaderArrayAdd(&pArray, pReader);
+ /* If iLevel is less than 0 and this is not a scan, include a seg-reader
+ ** for the pending-terms. If this is a scan, then this call must be being
+ ** made by an fts4aux module, not an FTS table. In this case calling
+ ** Fts3SegReaderPending might segfault, as the data structures used by
+ ** fts4aux are not completely populated. So it's easiest to filter these
+ ** calls out here. */
+ if( iLevel<0 && p->aIndex ){
+ Fts3SegReader *pSeg = 0;
+ rc = sqlite3Fts3SegReaderPending(p, iIndex, zTerm, nTerm, isPrefix, &pSeg);
+ if( rc==SQLITE_OK && pSeg ){
+ rc = fts3SegReaderCursorAppend(pCsr, pSeg);
+ }
}
- /* Loop through the entire %_segdir table. For each segment, create a
- ** Fts3SegReader to iterate through the subset of the segment leaves
- ** that may contain a term that matches zTerm/nTerm. For non-prefix
- ** searches, this is always a single leaf. For prefix searches, this
- ** may be a contiguous block of leaves.
- */
- if( rc==SQLITE_OK ){
- rc = sqlite3Fts3AllSegdirs(p, &pStmt);
- }
- while( rc==SQLITE_OK && SQLITE_ROW==(rc = sqlite3_step(pStmt)) ){
- Fts3SegReader *pNew = 0;
- int nRoot = sqlite3_column_bytes(pStmt, 4);
- char const *zRoot = sqlite3_column_blob(pStmt, 4);
- if( sqlite3_column_int64(pStmt, 1)==0 ){
- /* The entire segment is stored on the root node (which must be a
- ** leaf). Do not bother inspecting any data in this case, just
- ** create a Fts3SegReader to scan the single leaf.
- */
- rc = sqlite3Fts3SegReaderNew(iAge, 0, 0, 0, zRoot, nRoot, &pNew);
- }else{
- sqlite3_int64 i1; /* First leaf that may contain zTerm */
- sqlite3_int64 i2; /* Final leaf that may contain zTerm */
- rc = fts3SelectLeaf(p, zTerm, nTerm, zRoot, nRoot, &i1, (isPrefix?&i2:0));
- if( isPrefix==0 ) i2 = i1;
- if( rc==SQLITE_OK ){
- rc = sqlite3Fts3SegReaderNew(iAge, i1, i2, 0, 0, 0, &pNew);
+ if( iLevel!=FTS3_SEGCURSOR_PENDING ){
+ if( rc==SQLITE_OK ){
+ rc = sqlite3Fts3AllSegdirs(p, iIndex, iLevel, &pStmt);
+ }
+
+ while( rc==SQLITE_OK && SQLITE_ROW==(rc = sqlite3_step(pStmt)) ){
+ Fts3SegReader *pSeg = 0;
+
+ /* Read the values returned by the SELECT into local variables. */
+ sqlite3_int64 iStartBlock = sqlite3_column_int64(pStmt, 1);
+ sqlite3_int64 iLeavesEndBlock = sqlite3_column_int64(pStmt, 2);
+ sqlite3_int64 iEndBlock = sqlite3_column_int64(pStmt, 3);
+ int nRoot = sqlite3_column_bytes(pStmt, 4);
+ char const *zRoot = sqlite3_column_blob(pStmt, 4);
+
+ /* If zTerm is not NULL, and this segment is not stored entirely on its
+ ** root node, the range of leaves scanned can be reduced. Do this. */
+ if( iStartBlock && zTerm ){
+ sqlite3_int64 *pi = (isPrefix ? &iLeavesEndBlock : 0);
+ rc = fts3SelectLeaf(p, zTerm, nTerm, zRoot, nRoot, &iStartBlock, pi);
+ if( rc!=SQLITE_OK ) goto finished;
+ if( isPrefix==0 && isScan==0 ) iLeavesEndBlock = iStartBlock;
}
+
+ rc = sqlite3Fts3SegReaderNew(pCsr->nSegment+1,
+ iStartBlock, iLeavesEndBlock, iEndBlock, zRoot, nRoot, &pSeg
+ );
+ if( rc!=SQLITE_OK ) goto finished;
+ rc = fts3SegReaderCursorAppend(pCsr, pSeg);
}
- assert( (pNew==0)==(rc!=SQLITE_OK) );
-
- /* If a new Fts3SegReader was allocated, add it to the array. */
- if( rc==SQLITE_OK ){
- rc = fts3SegReaderArrayAdd(&pArray, pNew);
- }
- if( rc==SQLITE_OK ){
- rc = sqlite3Fts3SegReaderCost(pCsr, pNew, &pArray->nCost);
- }
- iAge++;
}
- if( rc==SQLITE_DONE ){
- rc = sqlite3_reset(pStmt);
- }else{
- sqlite3_reset(pStmt);
- }
- if( rc!=SQLITE_OK ){
- fts3SegReaderArrayFree(pArray);
- pArray = 0;
- }
- *ppArray = pArray;
+ finished:
+ rc2 = sqlite3_reset(pStmt);
+ if( rc==SQLITE_DONE ) rc = rc2;
+
return rc;
}
/*
-** This function retreives the doclist for the specified term (or term
-** prefix) from the database.
+** Set up a cursor object for iterating through a full-text index or a
+** single level therein.
+*/
+SQLITE_PRIVATE int sqlite3Fts3SegReaderCursor(
+ Fts3Table *p, /* FTS3 table handle */
+ int iIndex, /* Index to search (from 0 to p->nIndex-1) */
+ int iLevel, /* Level of segments to scan */
+ const char *zTerm, /* Term to query for */
+ int nTerm, /* Size of zTerm in bytes */
+ int isPrefix, /* True for a prefix search */
+ int isScan, /* True to scan from zTerm to EOF */
+ Fts3MultiSegReader *pCsr /* Cursor object to populate */
+){
+ assert( iIndex>=0 && iIndex<p->nIndex );
+ assert( iLevel==FTS3_SEGCURSOR_ALL
+ || iLevel==FTS3_SEGCURSOR_PENDING
+ || iLevel>=0
+ );
+ assert( iLevel<FTS3_SEGDIR_MAXLEVEL );
+ assert( FTS3_SEGCURSOR_ALL<0 && FTS3_SEGCURSOR_PENDING<0 );
+ assert( isPrefix==0 || isScan==0 );
+
+ /* "isScan" is only set to true by the ft4aux module, an ordinary
+ ** full-text tables. */
+ assert( isScan==0 || p->aIndex==0 );
+
+ memset(pCsr, 0, sizeof(Fts3MultiSegReader));
+
+ return fts3SegReaderCursor(
+ p, iIndex, iLevel, zTerm, nTerm, isPrefix, isScan, pCsr
+ );
+}
+
+/*
+** In addition to its current configuration, have the Fts3MultiSegReader
+** passed as the 4th argument also scan the doclist for term zTerm/nTerm.
**
-** The returned doclist may be in one of two formats, depending on the
-** value of parameter isReqPos. If isReqPos is zero, then the doclist is
-** a sorted list of delta-compressed docids (a bare doclist). If isReqPos
-** is non-zero, then the returned list is in the same format as is stored
-** in the database without the found length specifier at the start of on-disk
-** doclists.
+** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code.
+*/
+static int fts3SegReaderCursorAddZero(
+ Fts3Table *p, /* FTS virtual table handle */
+ const char *zTerm, /* Term to scan doclist of */
+ int nTerm, /* Number of bytes in zTerm */
+ Fts3MultiSegReader *pCsr /* Fts3MultiSegReader to modify */
+){
+ return fts3SegReaderCursor(p, 0, FTS3_SEGCURSOR_ALL, zTerm, nTerm, 0, 0,pCsr);
+}
+
+/*
+** Open an Fts3MultiSegReader to scan the doclist for term zTerm/nTerm. Or,
+** if isPrefix is true, to scan the doclist for all terms for which
+** zTerm/nTerm is a prefix. If successful, return SQLITE_OK and write
+** a pointer to the new Fts3MultiSegReader to *ppSegcsr. Otherwise, return
+** an SQLite error code.
+**
+** It is the responsibility of the caller to free this object by eventually
+** passing it to fts3SegReaderCursorFree()
+**
+** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code.
+** Output parameter *ppSegcsr is set to 0 if an error occurs.
+*/
+static int fts3TermSegReaderCursor(
+ Fts3Cursor *pCsr, /* Virtual table cursor handle */
+ const char *zTerm, /* Term to query for */
+ int nTerm, /* Size of zTerm in bytes */
+ int isPrefix, /* True for a prefix search */
+ Fts3MultiSegReader **ppSegcsr /* OUT: Allocated seg-reader cursor */
+){
+ Fts3MultiSegReader *pSegcsr; /* Object to allocate and return */
+ int rc = SQLITE_NOMEM; /* Return code */
+
+ pSegcsr = sqlite3_malloc(sizeof(Fts3MultiSegReader));
+ if( pSegcsr ){
+ int i;
+ int bFound = 0; /* True once an index has been found */
+ Fts3Table *p = (Fts3Table *)pCsr->base.pVtab;
+
+ if( isPrefix ){
+ for(i=1; bFound==0 && i<p->nIndex; i++){
+ if( p->aIndex[i].nPrefix==nTerm ){
+ bFound = 1;
+ rc = sqlite3Fts3SegReaderCursor(
+ p, i, FTS3_SEGCURSOR_ALL, zTerm, nTerm, 0, 0, pSegcsr);
+ pSegcsr->bLookup = 1;
+ }
+ }
+
+ for(i=1; bFound==0 && i<p->nIndex; i++){
+ if( p->aIndex[i].nPrefix==nTerm+1 ){
+ bFound = 1;
+ rc = sqlite3Fts3SegReaderCursor(
+ p, i, FTS3_SEGCURSOR_ALL, zTerm, nTerm, 1, 0, pSegcsr
+ );
+ if( rc==SQLITE_OK ){
+ rc = fts3SegReaderCursorAddZero(p, zTerm, nTerm, pSegcsr);
+ }
+ }
+ }
+ }
+
+ if( bFound==0 ){
+ rc = sqlite3Fts3SegReaderCursor(
+ p, 0, FTS3_SEGCURSOR_ALL, zTerm, nTerm, isPrefix, 0, pSegcsr
+ );
+ pSegcsr->bLookup = !isPrefix;
+ }
+ }
+
+ *ppSegcsr = pSegcsr;
+ return rc;
+}
+
+/*
+** Free an Fts3MultiSegReader allocated by fts3TermSegReaderCursor().
+*/
+static void fts3SegReaderCursorFree(Fts3MultiSegReader *pSegcsr){
+ sqlite3Fts3SegReaderFinish(pSegcsr);
+ sqlite3_free(pSegcsr);
+}
+
+/*
+** This function retreives the doclist for the specified term (or term
+** prefix) from the database.
*/
static int fts3TermSelect(
Fts3Table *p, /* Virtual table handle */
Fts3PhraseToken *pTok, /* Token to query for */
int iColumn, /* Column to query (or -ve for all columns) */
- int isReqPos, /* True to include position lists in output */
int *pnOut, /* OUT: Size of buffer at *ppOut */
char **ppOut /* OUT: Malloced result buffer */
){
int rc; /* Return code */
- Fts3SegReaderArray *pArray; /* Seg-reader array for this term */
- TermSelect tsc; /* Context object for fts3TermSelectCb() */
- Fts3SegFilter filter; /* Segment term filter configuration */
+ Fts3MultiSegReader *pSegcsr; /* Seg-reader cursor for this term */
+ TermSelect tsc; /* Object for pair-wise doclist merging */
+ Fts3SegFilter filter; /* Segment term filter configuration */
- pArray = pTok->pArray;
+ pSegcsr = pTok->pSegcsr;
memset(&tsc, 0, sizeof(TermSelect));
- tsc.isReqPos = isReqPos;
- filter.flags = FTS3_SEGMENT_IGNORE_EMPTY
+ filter.flags = FTS3_SEGMENT_IGNORE_EMPTY | FTS3_SEGMENT_REQUIRE_POS
| (pTok->isPrefix ? FTS3_SEGMENT_PREFIX : 0)
- | (isReqPos ? FTS3_SEGMENT_REQUIRE_POS : 0)
+ | (pTok->bFirst ? FTS3_SEGMENT_FIRST : 0)
| (iColumn<p->nColumn ? FTS3_SEGMENT_COLUMN_FILTER : 0);
filter.iCol = iColumn;
filter.zTerm = pTok->z;
filter.nTerm = pTok->n;
- rc = sqlite3Fts3SegReaderIterate(p, pArray->apSegment, pArray->nSegment,
- &filter, fts3TermSelectCb, (void *)&tsc
- );
- if( rc==SQLITE_OK ){
- rc = fts3TermSelectMerge(&tsc);
+ rc = sqlite3Fts3SegReaderStart(p, pSegcsr, &filter);
+ while( SQLITE_OK==rc
+ && SQLITE_ROW==(rc = sqlite3Fts3SegReaderStep(p, pSegcsr))
+ ){
+ rc = fts3TermSelectMerge(p, &tsc, pSegcsr->aDoclist, pSegcsr->nDoclist);
}
if( rc==SQLITE_OK ){
+ rc = fts3TermSelectFinishMerge(p, &tsc);
+ }
+ if( rc==SQLITE_OK ){
*ppOut = tsc.aaOutput[0];
*pnOut = tsc.anOutput[0];
}else{
@@ -110474,8 +119134,8 @@
}
}
- fts3SegReaderArrayFree(pArray);
- pTok->pArray = 0;
+ fts3SegReaderCursorFree(pSegcsr);
+ pTok->pSegcsr = 0;
return rc;
}
@@ -110488,24 +119148,15 @@
** that the doclist is simply a list of docids stored as delta encoded
** varints.
*/
-static int fts3DoclistCountDocids(int isPoslist, char *aList, int nList){
+static int fts3DoclistCountDocids(char *aList, int nList){
int nDoc = 0; /* Return value */
if( aList ){
char *aEnd = &aList[nList]; /* Pointer to one byte after EOF */
char *p = aList; /* Cursor */
- if( !isPoslist ){
- /* The number of docids in the list is the same as the number of
- ** varints. In FTS3 a varint consists of a single byte with the 0x80
- ** bit cleared and zero or more bytes with the 0x80 bit set. So to
- ** count the varints in the buffer, just count the number of bytes
- ** with the 0x80 bit clear. */
- while( p<aEnd ) nDoc += (((*p++)&0x80)==0);
- }else{
- while( p<aEnd ){
- nDoc++;
- while( (*p++)&0x80 ); /* Skip docid varint */
- fts3PoslistCopy(0, &p); /* Skip over position list */
- }
+ while( p<aEnd ){
+ nDoc++;
+ while( (*p++)&0x80 ); /* Skip docid varint */
+ fts3PoslistCopy(0, &p); /* Skip over position list */
}
}
@@ -110513,662 +119164,6 @@
}
/*
-** Call sqlite3Fts3DeferToken() for each token in the expression pExpr.
-*/
-static int fts3DeferExpression(Fts3Cursor *pCsr, Fts3Expr *pExpr){
- int rc = SQLITE_OK;
- if( pExpr ){
- rc = fts3DeferExpression(pCsr, pExpr->pLeft);
- if( rc==SQLITE_OK ){
- rc = fts3DeferExpression(pCsr, pExpr->pRight);
- }
- if( pExpr->eType==FTSQUERY_PHRASE ){
- int iCol = pExpr->pPhrase->iColumn;
- int i;
- for(i=0; rc==SQLITE_OK && i<pExpr->pPhrase->nToken; i++){
- Fts3PhraseToken *pToken = &pExpr->pPhrase->aToken[i];
- if( pToken->pDeferred==0 ){
- rc = sqlite3Fts3DeferToken(pCsr, pToken, iCol);
- }
- }
- }
- }
- return rc;
-}
-
-/*
-** This function removes the position information from a doclist. When
-** called, buffer aList (size *pnList bytes) contains a doclist that includes
-** position information. This function removes the position information so
-** that aList contains only docids, and adjusts *pnList to reflect the new
-** (possibly reduced) size of the doclist.
-*/
-static void fts3DoclistStripPositions(
- char *aList, /* IN/OUT: Buffer containing doclist */
- int *pnList /* IN/OUT: Size of doclist in bytes */
-){
- if( aList ){
- char *aEnd = &aList[*pnList]; /* Pointer to one byte after EOF */
- char *p = aList; /* Input cursor */
- char *pOut = aList; /* Output cursor */
-
- while( p<aEnd ){
- sqlite3_int64 delta;
- p += sqlite3Fts3GetVarint(p, &delta);
- fts3PoslistCopy(0, &p);
- pOut += sqlite3Fts3PutVarint(pOut, delta);
- }
-
- *pnList = (int)(pOut - aList);
- }
-}
-
-/*
-** Return a DocList corresponding to the phrase *pPhrase.
-**
-** If this function returns SQLITE_OK, but *pnOut is set to a negative value,
-** then no tokens in the phrase were looked up in the full-text index. This
-** is only possible when this function is called from within xFilter(). The
-** caller should assume that all documents match the phrase. The actual
-** filtering will take place in xNext().
-*/
-static int fts3PhraseSelect(
- Fts3Cursor *pCsr, /* Virtual table cursor handle */
- Fts3Phrase *pPhrase, /* Phrase to return a doclist for */
- int isReqPos, /* True if output should contain positions */
- char **paOut, /* OUT: Pointer to malloc'd result buffer */
- int *pnOut /* OUT: Size of buffer at *paOut */
-){
- char *pOut = 0;
- int nOut = 0;
- int rc = SQLITE_OK;
- int ii;
- int iCol = pPhrase->iColumn;
- int isTermPos = (pPhrase->nToken>1 || isReqPos);
- Fts3Table *p = (Fts3Table *)pCsr->base.pVtab;
- int isFirst = 1;
-
- int iPrevTok = 0;
- int nDoc = 0;
-
- /* If this is an xFilter() evaluation, create a segment-reader for each
- ** phrase token. Or, if this is an xNext() or snippet/offsets/matchinfo
- ** evaluation, only create segment-readers if there are no Fts3DeferredToken
- ** objects attached to the phrase-tokens.
- */
- for(ii=0; ii<pPhrase->nToken; ii++){
- Fts3PhraseToken *pTok = &pPhrase->aToken[ii];
- if( pTok->pArray==0 ){
- if( (pCsr->eEvalmode==FTS3_EVAL_FILTER)
- || (pCsr->eEvalmode==FTS3_EVAL_NEXT && pCsr->pDeferred==0)
- || (pCsr->eEvalmode==FTS3_EVAL_MATCHINFO && pTok->bFulltext)
- ){
- rc = fts3TermSegReaderArray(
- pCsr, pTok->z, pTok->n, pTok->isPrefix, &pTok->pArray
- );
- if( rc!=SQLITE_OK ) return rc;
- }
- }
- }
-
- for(ii=0; ii<pPhrase->nToken; ii++){
- Fts3PhraseToken *pTok; /* Token to find doclist for */
- int iTok = 0; /* The token being queried this iteration */
- char *pList = 0; /* Pointer to token doclist */
- int nList = 0; /* Size of buffer at pList */
-
- /* Select a token to process. If this is an xFilter() call, then tokens
- ** are processed in order from least to most costly. Otherwise, tokens
- ** are processed in the order in which they occur in the phrase.
- */
- if( pCsr->eEvalmode==FTS3_EVAL_MATCHINFO ){
- assert( isReqPos );
- iTok = ii;
- pTok = &pPhrase->aToken[iTok];
- if( pTok->bFulltext==0 ) continue;
- }else if( pCsr->eEvalmode==FTS3_EVAL_NEXT || isReqPos ){
- iTok = ii;
- pTok = &pPhrase->aToken[iTok];
- }else{
- int nMinCost = 0x7FFFFFFF;
- int jj;
-
- /* Find the remaining token with the lowest cost. */
- for(jj=0; jj<pPhrase->nToken; jj++){
- Fts3SegReaderArray *pArray = pPhrase->aToken[jj].pArray;
- if( pArray && pArray->nCost<nMinCost ){
- iTok = jj;
- nMinCost = pArray->nCost;
- }
- }
- pTok = &pPhrase->aToken[iTok];
-
- /* This branch is taken if it is determined that loading the doclist
- ** for the next token would require more IO than loading all documents
- ** currently identified by doclist pOut/nOut. No further doclists will
- ** be loaded from the full-text index for this phrase.
- */
- if( nMinCost>nDoc && ii>0 ){
- rc = fts3DeferExpression(pCsr, pCsr->pExpr);
- break;
- }
- }
-
- if( pCsr->eEvalmode==FTS3_EVAL_NEXT && pTok->pDeferred ){
- rc = fts3DeferredTermSelect(pTok->pDeferred, isTermPos, &nList, &pList);
- }else{
- if( pTok->pArray ){
- rc = fts3TermSelect(p, pTok, iCol, isTermPos, &nList, &pList);
- }
- pTok->bFulltext = 1;
- }
- assert( rc!=SQLITE_OK || pCsr->eEvalmode || pTok->pArray==0 );
- if( rc!=SQLITE_OK ) break;
-
- if( isFirst ){
- pOut = pList;
- nOut = nList;
- if( pCsr->eEvalmode==FTS3_EVAL_FILTER && pPhrase->nToken>1 ){
- nDoc = fts3DoclistCountDocids(1, pOut, nOut);
- }
- isFirst = 0;
- iPrevTok = iTok;
- }else{
- /* Merge the new term list and the current output. */
- char *aLeft, *aRight;
- int nLeft, nRight;
- int nDist;
- int mt;
-
- /* If this is the final token of the phrase, and positions were not
- ** requested by the caller, use MERGE_PHRASE instead of POS_PHRASE.
- ** This drops the position information from the output list.
- */
- mt = MERGE_POS_PHRASE;
- if( ii==pPhrase->nToken-1 && !isReqPos ) mt = MERGE_PHRASE;
-
- assert( iPrevTok!=iTok );
- if( iPrevTok<iTok ){
- aLeft = pOut;
- nLeft = nOut;
- aRight = pList;
- nRight = nList;
- nDist = iTok-iPrevTok;
- iPrevTok = iTok;
- }else{
- aRight = pOut;
- nRight = nOut;
- aLeft = pList;
- nLeft = nList;
- nDist = iPrevTok-iTok;
- }
- pOut = aRight;
- fts3DoclistMerge(
- mt, nDist, 0, pOut, &nOut, aLeft, nLeft, aRight, nRight, &nDoc
- );
- sqlite3_free(aLeft);
- }
- assert( nOut==0 || pOut!=0 );
- }
-
- if( rc==SQLITE_OK ){
- if( ii!=pPhrase->nToken ){
- assert( pCsr->eEvalmode==FTS3_EVAL_FILTER && isReqPos==0 );
- fts3DoclistStripPositions(pOut, &nOut);
- }
- *paOut = pOut;
- *pnOut = nOut;
- }else{
- sqlite3_free(pOut);
- }
- return rc;
-}
-
-/*
-** This function merges two doclists according to the requirements of a
-** NEAR operator.
-**
-** Both input doclists must include position information. The output doclist
-** includes position information if the first argument to this function
-** is MERGE_POS_NEAR, or does not if it is MERGE_NEAR.
-*/
-static int fts3NearMerge(
- int mergetype, /* MERGE_POS_NEAR or MERGE_NEAR */
- int nNear, /* Parameter to NEAR operator */
- int nTokenLeft, /* Number of tokens in LHS phrase arg */
- char *aLeft, /* Doclist for LHS (incl. positions) */
- int nLeft, /* Size of LHS doclist in bytes */
- int nTokenRight, /* As nTokenLeft */
- char *aRight, /* As aLeft */
- int nRight, /* As nRight */
- char **paOut, /* OUT: Results of merge (malloced) */
- int *pnOut /* OUT: Sized of output buffer */
-){
- char *aOut; /* Buffer to write output doclist to */
- int rc; /* Return code */
-
- assert( mergetype==MERGE_POS_NEAR || MERGE_NEAR );
-
- aOut = sqlite3_malloc(nLeft+nRight+1);
- if( aOut==0 ){
- rc = SQLITE_NOMEM;
- }else{
- rc = fts3DoclistMerge(mergetype, nNear+nTokenRight, nNear+nTokenLeft,
- aOut, pnOut, aLeft, nLeft, aRight, nRight, 0
- );
- if( rc!=SQLITE_OK ){
- sqlite3_free(aOut);
- aOut = 0;
- }
- }
-
- *paOut = aOut;
- return rc;
-}
-
-/*
-** This function is used as part of the processing for the snippet() and
-** offsets() functions.
-**
-** Both pLeft and pRight are expression nodes of type FTSQUERY_PHRASE. Both
-** have their respective doclists (including position information) loaded
-** in Fts3Expr.aDoclist/nDoclist. This function removes all entries from
-** each doclist that are not within nNear tokens of a corresponding entry
-** in the other doclist.
-*/
-SQLITE_PRIVATE int sqlite3Fts3ExprNearTrim(Fts3Expr *pLeft, Fts3Expr *pRight, int nNear){
- int rc; /* Return code */
-
- assert( pLeft->eType==FTSQUERY_PHRASE );
- assert( pRight->eType==FTSQUERY_PHRASE );
- assert( pLeft->isLoaded && pRight->isLoaded );
-
- if( pLeft->aDoclist==0 || pRight->aDoclist==0 ){
- sqlite3_free(pLeft->aDoclist);
- sqlite3_free(pRight->aDoclist);
- pRight->aDoclist = 0;
- pLeft->aDoclist = 0;
- rc = SQLITE_OK;
- }else{
- char *aOut; /* Buffer in which to assemble new doclist */
- int nOut; /* Size of buffer aOut in bytes */
-
- rc = fts3NearMerge(MERGE_POS_NEAR, nNear,
- pLeft->pPhrase->nToken, pLeft->aDoclist, pLeft->nDoclist,
- pRight->pPhrase->nToken, pRight->aDoclist, pRight->nDoclist,
- &aOut, &nOut
- );
- if( rc!=SQLITE_OK ) return rc;
- sqlite3_free(pRight->aDoclist);
- pRight->aDoclist = aOut;
- pRight->nDoclist = nOut;
-
- rc = fts3NearMerge(MERGE_POS_NEAR, nNear,
- pRight->pPhrase->nToken, pRight->aDoclist, pRight->nDoclist,
- pLeft->pPhrase->nToken, pLeft->aDoclist, pLeft->nDoclist,
- &aOut, &nOut
- );
- sqlite3_free(pLeft->aDoclist);
- pLeft->aDoclist = aOut;
- pLeft->nDoclist = nOut;
- }
- return rc;
-}
-
-
-/*
-** Allocate an Fts3SegReaderArray for each token in the expression pExpr.
-** The allocated objects are stored in the Fts3PhraseToken.pArray member
-** variables of each token structure.
-*/
-static int fts3ExprAllocateSegReaders(
- Fts3Cursor *pCsr, /* FTS3 table */
- Fts3Expr *pExpr, /* Expression to create seg-readers for */
- int *pnExpr /* OUT: Number of AND'd expressions */
-){
- int rc = SQLITE_OK; /* Return code */
-
- assert( pCsr->eEvalmode==FTS3_EVAL_FILTER );
- if( pnExpr && pExpr->eType!=FTSQUERY_AND ){
- (*pnExpr)++;
- pnExpr = 0;
- }
-
- if( pExpr->eType==FTSQUERY_PHRASE ){
- Fts3Phrase *pPhrase = pExpr->pPhrase;
- int ii;
-
- for(ii=0; rc==SQLITE_OK && ii<pPhrase->nToken; ii++){
- Fts3PhraseToken *pTok = &pPhrase->aToken[ii];
- if( pTok->pArray==0 ){
- rc = fts3TermSegReaderArray(
- pCsr, pTok->z, pTok->n, pTok->isPrefix, &pTok->pArray
- );
- }
- }
- }else{
- rc = fts3ExprAllocateSegReaders(pCsr, pExpr->pLeft, pnExpr);
- if( rc==SQLITE_OK ){
- rc = fts3ExprAllocateSegReaders(pCsr, pExpr->pRight, pnExpr);
- }
- }
- return rc;
-}
-
-/*
-** Free the Fts3SegReaderArray objects associated with each token in the
-** expression pExpr. In other words, this function frees the resources
-** allocated by fts3ExprAllocateSegReaders().
-*/
-static void fts3ExprFreeSegReaders(Fts3Expr *pExpr){
- if( pExpr ){
- Fts3Phrase *pPhrase = pExpr->pPhrase;
- if( pPhrase ){
- int kk;
- for(kk=0; kk<pPhrase->nToken; kk++){
- fts3SegReaderArrayFree(pPhrase->aToken[kk].pArray);
- pPhrase->aToken[kk].pArray = 0;
- }
- }
- fts3ExprFreeSegReaders(pExpr->pLeft);
- fts3ExprFreeSegReaders(pExpr->pRight);
- }
-}
-
-/*
-** Return the sum of the costs of all tokens in the expression pExpr. This
-** function must be called after Fts3SegReaderArrays have been allocated
-** for all tokens using fts3ExprAllocateSegReaders().
-*/
-static int fts3ExprCost(Fts3Expr *pExpr){
- int nCost; /* Return value */
- if( pExpr->eType==FTSQUERY_PHRASE ){
- Fts3Phrase *pPhrase = pExpr->pPhrase;
- int ii;
- nCost = 0;
- for(ii=0; ii<pPhrase->nToken; ii++){
- Fts3SegReaderArray *pArray = pPhrase->aToken[ii].pArray;
- if( pArray ){
- nCost += pPhrase->aToken[ii].pArray->nCost;
- }
- }
- }else{
- nCost = fts3ExprCost(pExpr->pLeft) + fts3ExprCost(pExpr->pRight);
- }
- return nCost;
-}
-
-/*
-** The following is a helper function (and type) for fts3EvalExpr(). It
-** must be called after Fts3SegReaders have been allocated for every token
-** in the expression. See the context it is called from in fts3EvalExpr()
-** for further explanation.
-*/
-typedef struct ExprAndCost ExprAndCost;
-struct ExprAndCost {
- Fts3Expr *pExpr;
- int nCost;
-};
-static void fts3ExprAssignCosts(
- Fts3Expr *pExpr, /* Expression to create seg-readers for */
- ExprAndCost **ppExprCost /* OUT: Write to *ppExprCost */
-){
- if( pExpr->eType==FTSQUERY_AND ){
- fts3ExprAssignCosts(pExpr->pLeft, ppExprCost);
- fts3ExprAssignCosts(pExpr->pRight, ppExprCost);
- }else{
- (*ppExprCost)->pExpr = pExpr;
- (*ppExprCost)->nCost = fts3ExprCost(pExpr);
- (*ppExprCost)++;
- }
-}
-
-/*
-** Evaluate the full-text expression pExpr against FTS3 table pTab. Store
-** the resulting doclist in *paOut and *pnOut. This routine mallocs for
-** the space needed to store the output. The caller is responsible for
-** freeing the space when it has finished.
-**
-** This function is called in two distinct contexts:
-**
-** * From within the virtual table xFilter() method. In this case, the
-** output doclist contains entries for all rows in the table, based on
-** data read from the full-text index.
-**
-** In this case, if the query expression contains one or more tokens that
-** are very common, then the returned doclist may contain a superset of
-** the documents that actually match the expression.
-**
-** * From within the virtual table xNext() method. This call is only made
-** if the call from within xFilter() found that there were very common
-** tokens in the query expression and did return a superset of the
-** matching documents. In this case the returned doclist contains only
-** entries that correspond to the current row of the table. Instead of
-** reading the data for each token from the full-text index, the data is
-** already available in-memory in the Fts3PhraseToken.pDeferred structures.
-** See fts3EvalDeferred() for how it gets there.
-**
-** In the first case above, Fts3Cursor.doDeferred==0. In the second (if it is
-** required) Fts3Cursor.doDeferred==1.
-**
-** If the SQLite invokes the snippet(), offsets() or matchinfo() function
-** as part of a SELECT on an FTS3 table, this function is called on each
-** individual phrase expression in the query. If there were very common tokens
-** found in the xFilter() call, then this function is called once for phrase
-** for each row visited, and the returned doclist contains entries for the
-** current row only. Otherwise, if there were no very common tokens, then this
-** function is called once only for each phrase in the query and the returned
-** doclist contains entries for all rows of the table.
-**
-** Fts3Cursor.doDeferred==1 when this function is called on phrases as a
-** result of a snippet(), offsets() or matchinfo() invocation.
-*/
-static int fts3EvalExpr(
- Fts3Cursor *p, /* Virtual table cursor handle */
- Fts3Expr *pExpr, /* Parsed fts3 expression */
- char **paOut, /* OUT: Pointer to malloc'd result buffer */
- int *pnOut, /* OUT: Size of buffer at *paOut */
- int isReqPos /* Require positions in output buffer */
-){
- int rc = SQLITE_OK; /* Return code */
-
- /* Zero the output parameters. */
- *paOut = 0;
- *pnOut = 0;
-
- if( pExpr ){
- assert( pExpr->eType==FTSQUERY_NEAR || pExpr->eType==FTSQUERY_OR
- || pExpr->eType==FTSQUERY_AND || pExpr->eType==FTSQUERY_NOT
- || pExpr->eType==FTSQUERY_PHRASE
- );
- assert( pExpr->eType==FTSQUERY_PHRASE || isReqPos==0 );
-
- if( pExpr->eType==FTSQUERY_PHRASE ){
- rc = fts3PhraseSelect(p, pExpr->pPhrase,
- isReqPos || (pExpr->pParent && pExpr->pParent->eType==FTSQUERY_NEAR),
- paOut, pnOut
- );
- fts3ExprFreeSegReaders(pExpr);
- }else if( p->eEvalmode==FTS3_EVAL_FILTER && pExpr->eType==FTSQUERY_AND ){
- ExprAndCost *aExpr = 0; /* Array of AND'd expressions and costs */
- int nExpr = 0; /* Size of aExpr[] */
- char *aRet = 0; /* Doclist to return to caller */
- int nRet = 0; /* Length of aRet[] in bytes */
- int nDoc = 0x7FFFFFFF;
-
- assert( !isReqPos );
-
- rc = fts3ExprAllocateSegReaders(p, pExpr, &nExpr);
- if( rc==SQLITE_OK ){
- assert( nExpr>1 );
- aExpr = sqlite3_malloc(sizeof(ExprAndCost) * nExpr);
- if( !aExpr ) rc = SQLITE_NOMEM;
- }
- if( rc==SQLITE_OK ){
- int ii; /* Used to iterate through expressions */
-
- fts3ExprAssignCosts(pExpr, &aExpr);
- aExpr -= nExpr;
- for(ii=0; ii<nExpr; ii++){
- char *aNew;
- int nNew;
- int jj;
- ExprAndCost *pBest = 0;
-
- for(jj=0; jj<nExpr; jj++){
- ExprAndCost *pCand = &aExpr[jj];
- if( pCand->pExpr && (pBest==0 || pCand->nCost<pBest->nCost) ){
- pBest = pCand;
- }
- }
-
- if( pBest->nCost>nDoc ){
- rc = fts3DeferExpression(p, p->pExpr);
- break;
- }else{
- rc = fts3EvalExpr(p, pBest->pExpr, &aNew, &nNew, 0);
- if( rc!=SQLITE_OK ) break;
- pBest->pExpr = 0;
- if( ii==0 ){
- aRet = aNew;
- nRet = nNew;
- nDoc = fts3DoclistCountDocids(0, aRet, nRet);
- }else{
- fts3DoclistMerge(
- MERGE_AND, 0, 0, aRet, &nRet, aRet, nRet, aNew, nNew, &nDoc
- );
- sqlite3_free(aNew);
- }
- }
- }
- }
-
- if( rc==SQLITE_OK ){
- *paOut = aRet;
- *pnOut = nRet;
- }else{
- assert( *paOut==0 );
- sqlite3_free(aRet);
- }
- sqlite3_free(aExpr);
- fts3ExprFreeSegReaders(pExpr);
-
- }else{
- char *aLeft;
- char *aRight;
- int nLeft;
- int nRight;
-
- assert( pExpr->eType==FTSQUERY_NEAR
- || pExpr->eType==FTSQUERY_OR
- || pExpr->eType==FTSQUERY_NOT
- || (pExpr->eType==FTSQUERY_AND && p->eEvalmode==FTS3_EVAL_NEXT)
- );
-
- if( 0==(rc = fts3EvalExpr(p, pExpr->pRight, &aRight, &nRight, isReqPos))
- && 0==(rc = fts3EvalExpr(p, pExpr->pLeft, &aLeft, &nLeft, isReqPos))
- ){
- switch( pExpr->eType ){
- case FTSQUERY_NEAR: {
- Fts3Expr *pLeft;
- Fts3Expr *pRight;
- int mergetype = MERGE_NEAR;
- if( pExpr->pParent && pExpr->pParent->eType==FTSQUERY_NEAR ){
- mergetype = MERGE_POS_NEAR;
- }
- pLeft = pExpr->pLeft;
- while( pLeft->eType==FTSQUERY_NEAR ){
- pLeft=pLeft->pRight;
- }
- pRight = pExpr->pRight;
- assert( pRight->eType==FTSQUERY_PHRASE );
- assert( pLeft->eType==FTSQUERY_PHRASE );
-
- rc = fts3NearMerge(mergetype, pExpr->nNear,
- pLeft->pPhrase->nToken, aLeft, nLeft,
- pRight->pPhrase->nToken, aRight, nRight,
- paOut, pnOut
- );
- sqlite3_free(aLeft);
- break;
- }
-
- case FTSQUERY_OR: {
- /* Allocate a buffer for the output. The maximum size is the
- ** sum of the sizes of the two input buffers. The +1 term is
- ** so that a buffer of zero bytes is never allocated - this can
- ** cause fts3DoclistMerge() to incorrectly return SQLITE_NOMEM.
- */
- char *aBuffer = sqlite3_malloc(nRight+nLeft+1);
- rc = fts3DoclistMerge(MERGE_OR, 0, 0, aBuffer, pnOut,
- aLeft, nLeft, aRight, nRight, 0
- );
- *paOut = aBuffer;
- sqlite3_free(aLeft);
- break;
- }
-
- default: {
- assert( FTSQUERY_NOT==MERGE_NOT && FTSQUERY_AND==MERGE_AND );
- fts3DoclistMerge(pExpr->eType, 0, 0, aLeft, pnOut,
- aLeft, nLeft, aRight, nRight, 0
- );
- *paOut = aLeft;
- break;
- }
- }
- }
- sqlite3_free(aRight);
- }
- }
-
- assert( rc==SQLITE_OK || *paOut==0 );
- return rc;
-}
-
-/*
-** This function is called from within xNext() for each row visited by
-** an FTS3 query. If evaluating the FTS3 query expression within xFilter()
-** was able to determine the exact set of matching rows, this function sets
-** *pbRes to true and returns SQLITE_IO immediately.
-**
-** Otherwise, if evaluating the query expression within xFilter() returned a
-** superset of the matching documents instead of an exact set (this happens
-** when the query includes very common tokens and it is deemed too expensive to
-** load their doclists from disk), this function tests if the current row
-** really does match the FTS3 query.
-**
-** If an error occurs, an SQLite error code is returned. Otherwise, SQLITE_OK
-** is returned and *pbRes is set to true if the current row matches the
-** FTS3 query (and should be included in the results returned to SQLite), or
-** false otherwise.
-*/
-static int fts3EvalDeferred(
- Fts3Cursor *pCsr, /* FTS3 cursor pointing at row to test */
- int *pbRes /* OUT: Set to true if row is a match */
-){
- int rc = SQLITE_OK;
- if( pCsr->pDeferred==0 ){
- *pbRes = 1;
- }else{
- rc = fts3CursorSeek(0, pCsr);
- if( rc==SQLITE_OK ){
- sqlite3Fts3FreeDeferredDoclists(pCsr);
- rc = sqlite3Fts3CacheDeferredDoclists(pCsr);
- }
- if( rc==SQLITE_OK ){
- char *a = 0;
- int n = 0;
- rc = fts3EvalExpr(pCsr, pCsr->pExpr, &a, &n, 0);
- assert( n>=0 );
- *pbRes = (n>0);
- sqlite3_free(a);
- }
- }
- return rc;
-}
-
-/*
** Advance the cursor to the next row in the %_content table that
** matches the search criteria. For a MATCH search, this will be
** the next row that matches. For a full-table scan, this will be
@@ -111180,31 +119175,20 @@
** subsequently to determine whether or not an EOF was hit.
*/
static int fts3NextMethod(sqlite3_vtab_cursor *pCursor){
- int res;
- int rc = SQLITE_OK; /* Return code */
+ int rc;
Fts3Cursor *pCsr = (Fts3Cursor *)pCursor;
-
- pCsr->eEvalmode = FTS3_EVAL_NEXT;
- do {
- if( pCsr->aDoclist==0 ){
- if( SQLITE_ROW!=sqlite3_step(pCsr->pStmt) ){
- pCsr->isEof = 1;
- rc = sqlite3_reset(pCsr->pStmt);
- break;
- }
- pCsr->iPrevId = sqlite3_column_int64(pCsr->pStmt, 0);
+ if( pCsr->eSearch==FTS3_DOCID_SEARCH || pCsr->eSearch==FTS3_FULLSCAN_SEARCH ){
+ if( SQLITE_ROW!=sqlite3_step(pCsr->pStmt) ){
+ pCsr->isEof = 1;
+ rc = sqlite3_reset(pCsr->pStmt);
}else{
- if( pCsr->pNextId>=&pCsr->aDoclist[pCsr->nDoclist] ){
- pCsr->isEof = 1;
- break;
- }
- sqlite3_reset(pCsr->pStmt);
- fts3GetDeltaVarint(&pCsr->pNextId, &pCsr->iPrevId);
- pCsr->isRequireSeek = 1;
- pCsr->isMatchinfoNeeded = 1;
+ pCsr->iPrevId = sqlite3_column_int64(pCsr->pStmt, 0);
+ rc = SQLITE_OK;
}
- }while( SQLITE_OK==(rc = fts3EvalDeferred(pCsr, &res)) && res==0 );
-
+ }else{
+ rc = fts3EvalNext((Fts3Cursor *)pCursor);
+ }
+ assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 );
return rc;
}
@@ -111231,11 +119215,7 @@
int nVal, /* Number of elements in apVal */
sqlite3_value **apVal /* Arguments for the indexing scheme */
){
- const char *azSql[] = {
- "SELECT * FROM %Q.'%q_content' WHERE docid = ?", /* non-full-table-scan */
- "SELECT * FROM %Q.'%q_content'", /* full-table-scan */
- };
- int rc; /* Return code */
+ int rc;
char *zSql; /* SQL statement used to access %_content */
Fts3Table *p = (Fts3Table *)pCursor->pVtab;
Fts3Cursor *pCsr = (Fts3Cursor *)pCursor;
@@ -111254,6 +119234,13 @@
sqlite3Fts3ExprFree(pCsr->pExpr);
memset(&pCursor[1], 0, sizeof(Fts3Cursor)-sizeof(sqlite3_vtab_cursor));
+ if( idxStr ){
+ pCsr->bDesc = (idxStr[0]=='D');
+ }else{
+ pCsr->bDesc = p->bDescIdx;
+ }
+ pCsr->eSearch = (i16)idxNum;
+
if( idxNum!=FTS3_DOCID_SEARCH && idxNum!=FTS3_FULLSCAN_SEARCH ){
int iCol = idxNum-FTS3_FULLTEXT_SEARCH;
const char *zQuery = (const char *)sqlite3_value_text(apVal[0]);
@@ -111262,13 +119249,13 @@
return SQLITE_NOMEM;
}
- rc = sqlite3Fts3ExprParse(p->pTokenizer, p->azColumn, p->nColumn,
- iCol, zQuery, -1, &pCsr->pExpr
+ rc = sqlite3Fts3ExprParse(p->pTokenizer, p->azColumn, p->bHasStat,
+ p->nColumn, iCol, zQuery, -1, &pCsr->pExpr
);
if( rc!=SQLITE_OK ){
if( rc==SQLITE_ERROR ){
- p->base.zErrMsg = sqlite3_mprintf("malformed MATCH expression: [%s]",
- zQuery);
+ static const char *zErr = "malformed MATCH expression: [%s]";
+ p->base.zErrMsg = sqlite3_mprintf(zErr, zQuery);
}
return rc;
}
@@ -111276,7 +119263,8 @@
rc = sqlite3Fts3ReadLock(p);
if( rc!=SQLITE_OK ) return rc;
- rc = fts3EvalExpr(pCsr, pCsr->pExpr, &pCsr->aDoclist, &pCsr->nDoclist, 0);
+ rc = fts3EvalStart(pCsr);
+
sqlite3Fts3SegmentsClose(p);
if( rc!=SQLITE_OK ) return rc;
pCsr->pNextId = pCsr->aDoclist;
@@ -111288,19 +119276,25 @@
** full-text query or docid lookup, the statement retrieves a single
** row by docid.
*/
- zSql = sqlite3_mprintf(azSql[idxNum==FTS3_FULLSCAN_SEARCH], p->zDb, p->zName);
- if( !zSql ){
- rc = SQLITE_NOMEM;
- }else{
- rc = sqlite3_prepare_v2(p->db, zSql, -1, &pCsr->pStmt, 0);
- sqlite3_free(zSql);
+ if( idxNum==FTS3_FULLSCAN_SEARCH ){
+ zSql = sqlite3_mprintf(
+ "SELECT %s ORDER BY rowid %s",
+ p->zReadExprlist, (pCsr->bDesc ? "DESC" : "ASC")
+ );
+ if( zSql ){
+ rc = sqlite3_prepare_v2(p->db, zSql, -1, &pCsr->pStmt, 0);
+ sqlite3_free(zSql);
+ }else{
+ rc = SQLITE_NOMEM;
+ }
+ }else if( idxNum==FTS3_DOCID_SEARCH ){
+ rc = fts3CursorSeekStmt(pCsr, &pCsr->pStmt);
+ if( rc==SQLITE_OK ){
+ rc = sqlite3_bind_value(pCsr->pStmt, 1, apVal[0]);
+ }
}
- if( rc==SQLITE_OK && idxNum==FTS3_DOCID_SEARCH ){
- rc = sqlite3_bind_value(pCsr->pStmt, 1, apVal[0]);
- }
- pCsr->eSearch = (i16)idxNum;
-
if( rc!=SQLITE_OK ) return rc;
+
return fts3NextMethod(pCursor);
}
@@ -111320,16 +119314,7 @@
*/
static int fts3RowidMethod(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){
Fts3Cursor *pCsr = (Fts3Cursor *) pCursor;
- if( pCsr->aDoclist ){
- *pRowid = pCsr->iPrevId;
- }else{
- /* This branch runs if the query is implemented using a full-table scan
- ** (not using the full-text index). In this case grab the rowid from the
- ** SELECT statement.
- */
- assert( pCsr->isRequireSeek==0 );
- *pRowid = sqlite3_column_int64(pCsr->pStmt, 0);
- }
+ *pRowid = pCsr->iPrevId;
return SQLITE_OK;
}
@@ -111342,7 +119327,7 @@
sqlite3_context *pContext, /* Context for sqlite3_result_xxx() calls */
int iCol /* Index of column to read value from */
){
- int rc; /* Return Code */
+ int rc = SQLITE_OK; /* Return Code */
Fts3Cursor *pCsr = (Fts3Cursor *) pCursor;
Fts3Table *p = (Fts3Table *)pCursor->pVtab;
@@ -111353,21 +119338,20 @@
/* This call is a request for the "docid" column. Since "docid" is an
** alias for "rowid", use the xRowid() method to obtain the value.
*/
- sqlite3_int64 iRowid;
- rc = fts3RowidMethod(pCursor, &iRowid);
- sqlite3_result_int64(pContext, iRowid);
+ sqlite3_result_int64(pContext, pCsr->iPrevId);
}else if( iCol==p->nColumn ){
/* The extra column whose name is the same as the table.
** Return a blob which is a pointer to the cursor.
*/
sqlite3_result_blob(pContext, &pCsr, sizeof(pCsr), SQLITE_TRANSIENT);
- rc = SQLITE_OK;
}else{
rc = fts3CursorSeek(0, pCsr);
- if( rc==SQLITE_OK ){
+ if( rc==SQLITE_OK && sqlite3_data_count(pCsr->pStmt)>(iCol+1) ){
sqlite3_result_value(pContext, sqlite3_column_value(pCsr->pStmt, iCol+1));
}
}
+
+ assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 );
return rc;
}
@@ -111399,8 +119383,13 @@
** Implementation of xBegin() method. This is a no-op.
*/
static int fts3BeginMethod(sqlite3_vtab *pVtab){
+ TESTONLY( Fts3Table *p = (Fts3Table*)pVtab );
UNUSED_PARAMETER(pVtab);
- assert( ((Fts3Table *)pVtab)->nPendingData==0 );
+ assert( p->pSegments==0 );
+ assert( p->nPendingData==0 );
+ assert( p->inTransaction!=1 );
+ TESTONLY( p->inTransaction = 1 );
+ TESTONLY( p->mxSavepoint = -1; );
return SQLITE_OK;
}
@@ -111410,8 +119399,13 @@
** by fts3SyncMethod().
*/
static int fts3CommitMethod(sqlite3_vtab *pVtab){
+ TESTONLY( Fts3Table *p = (Fts3Table*)pVtab );
UNUSED_PARAMETER(pVtab);
- assert( ((Fts3Table *)pVtab)->nPendingData==0 );
+ assert( p->nPendingData==0 );
+ assert( p->inTransaction!=0 );
+ assert( p->pSegments==0 );
+ TESTONLY( p->inTransaction = 0 );
+ TESTONLY( p->mxSavepoint = -1; );
return SQLITE_OK;
}
@@ -111420,86 +119414,31 @@
** hash-table. Any changes made to the database are reverted by SQLite.
*/
static int fts3RollbackMethod(sqlite3_vtab *pVtab){
- sqlite3Fts3PendingTermsClear((Fts3Table *)pVtab);
+ Fts3Table *p = (Fts3Table*)pVtab;
+ sqlite3Fts3PendingTermsClear(p);
+ assert( p->inTransaction!=0 );
+ TESTONLY( p->inTransaction = 0 );
+ TESTONLY( p->mxSavepoint = -1; );
return SQLITE_OK;
}
/*
-** Load the doclist associated with expression pExpr to pExpr->aDoclist.
-** The loaded doclist contains positions as well as the document ids.
-** This is used by the matchinfo(), snippet() and offsets() auxillary
-** functions.
+** When called, *ppPoslist must point to the byte immediately following the
+** end of a position-list. i.e. ( (*ppPoslist)[-1]==POS_END ). This function
+** moves *ppPoslist so that it instead points to the first byte of the
+** same position list.
*/
-SQLITE_PRIVATE int sqlite3Fts3ExprLoadDoclist(Fts3Cursor *pCsr, Fts3Expr *pExpr){
- int rc;
- assert( pExpr->eType==FTSQUERY_PHRASE && pExpr->pPhrase );
- assert( pCsr->eEvalmode==FTS3_EVAL_NEXT );
- rc = fts3EvalExpr(pCsr, pExpr, &pExpr->aDoclist, &pExpr->nDoclist, 1);
- return rc;
-}
+static void fts3ReversePoslist(char *pStart, char **ppPoslist){
+ char *p = &(*ppPoslist)[-2];
+ char c = 0;
-SQLITE_PRIVATE int sqlite3Fts3ExprLoadFtDoclist(
- Fts3Cursor *pCsr,
- Fts3Expr *pExpr,
- char **paDoclist,
- int *pnDoclist
-){
- int rc;
- assert( pCsr->eEvalmode==FTS3_EVAL_NEXT );
- assert( pExpr->eType==FTSQUERY_PHRASE && pExpr->pPhrase );
- pCsr->eEvalmode = FTS3_EVAL_MATCHINFO;
- rc = fts3EvalExpr(pCsr, pExpr, paDoclist, pnDoclist, 1);
- pCsr->eEvalmode = FTS3_EVAL_NEXT;
- return rc;
-}
-
-/*
-** After ExprLoadDoclist() (see above) has been called, this function is
-** used to iterate/search through the position lists that make up the doclist
-** stored in pExpr->aDoclist.
-*/
-SQLITE_PRIVATE char *sqlite3Fts3FindPositions(
- Fts3Expr *pExpr, /* Access this expressions doclist */
- sqlite3_int64 iDocid, /* Docid associated with requested pos-list */
- int iCol /* Column of requested pos-list */
-){
- assert( pExpr->isLoaded );
- if( pExpr->aDoclist ){
- char *pEnd = &pExpr->aDoclist[pExpr->nDoclist];
- char *pCsr = pExpr->pCurrent;
-
- assert( pCsr );
- while( pCsr<pEnd ){
- if( pExpr->iCurrent<iDocid ){
- fts3PoslistCopy(0, &pCsr);
- if( pCsr<pEnd ){
- fts3GetDeltaVarint(&pCsr, &pExpr->iCurrent);
- }
- pExpr->pCurrent = pCsr;
- }else{
- if( pExpr->iCurrent==iDocid ){
- int iThis = 0;
- if( iCol<0 ){
- /* If iCol is negative, return a pointer to the start of the
- ** position-list (instead of a pointer to the start of a list
- ** of offsets associated with a specific column).
- */
- return pCsr;
- }
- while( iThis<iCol ){
- fts3ColumnlistCopy(0, &pCsr);
- if( *pCsr==0x00 ) return 0;
- pCsr++;
- pCsr += sqlite3Fts3GetVarint32(pCsr, &iThis);
- }
- if( iCol==iThis && (*pCsr&0xFE) ) return pCsr;
- }
- return 0;
- }
- }
+ while( p>pStart && (c=*p--)==0 );
+ while( p>pStart && (*p & 0x80) | c ){
+ c = *p--;
}
-
- return 0;
+ if( p>pStart ){ p = &p[2]; }
+ while( *p++&0x80 );
+ *ppPoslist = p;
}
/*
@@ -111700,15 +119639,22 @@
sqlite3 *db = p->db; /* Database connection */
int rc; /* Return Code */
+ /* As it happens, the pending terms table is always empty here. This is
+ ** because an "ALTER TABLE RENAME TABLE" statement inside a transaction
+ ** always opens a savepoint transaction. And the xSavepoint() method
+ ** flushes the pending terms table. But leave the (no-op) call to
+ ** PendingTermsFlush() in in case that changes.
+ */
+ assert( p->nPendingData==0 );
rc = sqlite3Fts3PendingTermsFlush(p);
- if( rc!=SQLITE_OK ){
- return rc;
+
+ if( p->zContentTbl==0 ){
+ fts3DbExec(&rc, db,
+ "ALTER TABLE %Q.'%q_content' RENAME TO '%q_content';",
+ p->zDb, p->zName, zName
+ );
}
- fts3DbExec(&rc, db,
- "ALTER TABLE %Q.'%q_content' RENAME TO '%q_content';",
- p->zDb, p->zName, zName
- );
if( p->bHasDocsize ){
fts3DbExec(&rc, db,
"ALTER TABLE %Q.'%q_docsize' RENAME TO '%q_docsize';",
@@ -111732,8 +119678,51 @@
return rc;
}
+/*
+** The xSavepoint() method.
+**
+** Flush the contents of the pending-terms table to disk.
+*/
+static int fts3SavepointMethod(sqlite3_vtab *pVtab, int iSavepoint){
+ UNUSED_PARAMETER(iSavepoint);
+ assert( ((Fts3Table *)pVtab)->inTransaction );
+ assert( ((Fts3Table *)pVtab)->mxSavepoint < iSavepoint );
+ TESTONLY( ((Fts3Table *)pVtab)->mxSavepoint = iSavepoint );
+ return fts3SyncMethod(pVtab);
+}
+
+/*
+** The xRelease() method.
+**
+** This is a no-op.
+*/
+static int fts3ReleaseMethod(sqlite3_vtab *pVtab, int iSavepoint){
+ TESTONLY( Fts3Table *p = (Fts3Table*)pVtab );
+ UNUSED_PARAMETER(iSavepoint);
+ UNUSED_PARAMETER(pVtab);
+ assert( p->inTransaction );
+ assert( p->mxSavepoint >= iSavepoint );
+ TESTONLY( p->mxSavepoint = iSavepoint-1 );
+ return SQLITE_OK;
+}
+
+/*
+** The xRollbackTo() method.
+**
+** Discard the contents of the pending terms table.
+*/
+static int fts3RollbackToMethod(sqlite3_vtab *pVtab, int iSavepoint){
+ Fts3Table *p = (Fts3Table*)pVtab;
+ UNUSED_PARAMETER(iSavepoint);
+ assert( p->inTransaction );
+ assert( p->mxSavepoint >= iSavepoint );
+ TESTONLY( p->mxSavepoint = iSavepoint );
+ sqlite3Fts3PendingTermsClear(p);
+ return SQLITE_OK;
+}
+
static const sqlite3_module fts3Module = {
- /* iVersion */ 0,
+ /* iVersion */ 2,
/* xCreate */ fts3CreateMethod,
/* xConnect */ fts3ConnectMethod,
/* xBestIndex */ fts3BestIndexMethod,
@@ -111753,6 +119742,9 @@
/* xRollback */ fts3RollbackMethod,
/* xFindFunction */ fts3FindFunctionMethod,
/* xRename */ fts3RenameMethod,
+ /* xSavepoint */ fts3SavepointMethod,
+ /* xRelease */ fts3ReleaseMethod,
+ /* xRollbackTo */ fts3RollbackToMethod,
};
/*
@@ -111799,6 +119791,14 @@
sqlite3Fts3IcuTokenizerModule(&pIcu);
#endif
+#ifdef SQLITE_TEST
+ rc = sqlite3Fts3InitTerm(db);
+ if( rc!=SQLITE_OK ) return rc;
+#endif
+
+ rc = sqlite3Fts3InitAux(db);
+ if( rc!=SQLITE_OK ) return rc;
+
sqlite3Fts3SimpleTokenizerModule(&pSimple);
sqlite3Fts3PorterTokenizerModule(&pPorter);
@@ -111860,7 +119860,1578 @@
return rc;
}
+/*
+** Allocate an Fts3MultiSegReader for each token in the expression headed
+** by pExpr.
+**
+** An Fts3SegReader object is a cursor that can seek or scan a range of
+** entries within a single segment b-tree. An Fts3MultiSegReader uses multiple
+** Fts3SegReader objects internally to provide an interface to seek or scan
+** within the union of all segments of a b-tree. Hence the name.
+**
+** If the allocated Fts3MultiSegReader just seeks to a single entry in a
+** segment b-tree (if the term is not a prefix or it is a prefix for which
+** there exists prefix b-tree of the right length) then it may be traversed
+** and merged incrementally. Otherwise, it has to be merged into an in-memory
+** doclist and then traversed.
+*/
+static void fts3EvalAllocateReaders(
+ Fts3Cursor *pCsr, /* FTS cursor handle */
+ Fts3Expr *pExpr, /* Allocate readers for this expression */
+ int *pnToken, /* OUT: Total number of tokens in phrase. */
+ int *pnOr, /* OUT: Total number of OR nodes in expr. */
+ int *pRc /* IN/OUT: Error code */
+){
+ if( pExpr && SQLITE_OK==*pRc ){
+ if( pExpr->eType==FTSQUERY_PHRASE ){
+ int i;
+ int nToken = pExpr->pPhrase->nToken;
+ *pnToken += nToken;
+ for(i=0; i<nToken; i++){
+ Fts3PhraseToken *pToken = &pExpr->pPhrase->aToken[i];
+ int rc = fts3TermSegReaderCursor(pCsr,
+ pToken->z, pToken->n, pToken->isPrefix, &pToken->pSegcsr
+ );
+ if( rc!=SQLITE_OK ){
+ *pRc = rc;
+ return;
+ }
+ }
+ assert( pExpr->pPhrase->iDoclistToken==0 );
+ pExpr->pPhrase->iDoclistToken = -1;
+ }else{
+ *pnOr += (pExpr->eType==FTSQUERY_OR);
+ fts3EvalAllocateReaders(pCsr, pExpr->pLeft, pnToken, pnOr, pRc);
+ fts3EvalAllocateReaders(pCsr, pExpr->pRight, pnToken, pnOr, pRc);
+ }
+ }
+}
+
+/*
+** Arguments pList/nList contain the doclist for token iToken of phrase p.
+** It is merged into the main doclist stored in p->doclist.aAll/nAll.
+**
+** This function assumes that pList points to a buffer allocated using
+** sqlite3_malloc(). This function takes responsibility for eventually
+** freeing the buffer.
+*/
+static void fts3EvalPhraseMergeToken(
+ Fts3Table *pTab, /* FTS Table pointer */
+ Fts3Phrase *p, /* Phrase to merge pList/nList into */
+ int iToken, /* Token pList/nList corresponds to */
+ char *pList, /* Pointer to doclist */
+ int nList /* Number of bytes in pList */
+){
+ assert( iToken!=p->iDoclistToken );
+
+ if( pList==0 ){
+ sqlite3_free(p->doclist.aAll);
+ p->doclist.aAll = 0;
+ p->doclist.nAll = 0;
+ }
+
+ else if( p->iDoclistToken<0 ){
+ p->doclist.aAll = pList;
+ p->doclist.nAll = nList;
+ }
+
+ else if( p->doclist.aAll==0 ){
+ sqlite3_free(pList);
+ }
+
+ else {
+ char *pLeft;
+ char *pRight;
+ int nLeft;
+ int nRight;
+ int nDiff;
+
+ if( p->iDoclistToken<iToken ){
+ pLeft = p->doclist.aAll;
+ nLeft = p->doclist.nAll;
+ pRight = pList;
+ nRight = nList;
+ nDiff = iToken - p->iDoclistToken;
+ }else{
+ pRight = p->doclist.aAll;
+ nRight = p->doclist.nAll;
+ pLeft = pList;
+ nLeft = nList;
+ nDiff = p->iDoclistToken - iToken;
+ }
+
+ fts3DoclistPhraseMerge(pTab->bDescIdx, nDiff, pLeft, nLeft, pRight,&nRight);
+ sqlite3_free(pLeft);
+ p->doclist.aAll = pRight;
+ p->doclist.nAll = nRight;
+ }
+
+ if( iToken>p->iDoclistToken ) p->iDoclistToken = iToken;
+}
+
+/*
+** Load the doclist for phrase p into p->doclist.aAll/nAll. The loaded doclist
+** does not take deferred tokens into account.
+**
+** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code.
+*/
+static int fts3EvalPhraseLoad(
+ Fts3Cursor *pCsr, /* FTS Cursor handle */
+ Fts3Phrase *p /* Phrase object */
+){
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+ int iToken;
+ int rc = SQLITE_OK;
+
+ for(iToken=0; rc==SQLITE_OK && iToken<p->nToken; iToken++){
+ Fts3PhraseToken *pToken = &p->aToken[iToken];
+ assert( pToken->pDeferred==0 || pToken->pSegcsr==0 );
+
+ if( pToken->pSegcsr ){
+ int nThis = 0;
+ char *pThis = 0;
+ rc = fts3TermSelect(pTab, pToken, p->iColumn, &nThis, &pThis);
+ if( rc==SQLITE_OK ){
+ fts3EvalPhraseMergeToken(pTab, p, iToken, pThis, nThis);
+ }
+ }
+ assert( pToken->pSegcsr==0 );
+ }
+
+ return rc;
+}
+
+/*
+** This function is called on each phrase after the position lists for
+** any deferred tokens have been loaded into memory. It updates the phrases
+** current position list to include only those positions that are really
+** instances of the phrase (after considering deferred tokens). If this
+** means that the phrase does not appear in the current row, doclist.pList
+** and doclist.nList are both zeroed.
+**
+** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code.
+*/
+static int fts3EvalDeferredPhrase(Fts3Cursor *pCsr, Fts3Phrase *pPhrase){
+ int iToken; /* Used to iterate through phrase tokens */
+ char *aPoslist = 0; /* Position list for deferred tokens */
+ int nPoslist = 0; /* Number of bytes in aPoslist */
+ int iPrev = -1; /* Token number of previous deferred token */
+
+ assert( pPhrase->doclist.bFreeList==0 );
+
+ for(iToken=0; iToken<pPhrase->nToken; iToken++){
+ Fts3PhraseToken *pToken = &pPhrase->aToken[iToken];
+ Fts3DeferredToken *pDeferred = pToken->pDeferred;
+
+ if( pDeferred ){
+ char *pList;
+ int nList;
+ int rc = sqlite3Fts3DeferredTokenList(pDeferred, &pList, &nList);
+ if( rc!=SQLITE_OK ) return rc;
+
+ if( pList==0 ){
+ sqlite3_free(aPoslist);
+ pPhrase->doclist.pList = 0;
+ pPhrase->doclist.nList = 0;
+ return SQLITE_OK;
+
+ }else if( aPoslist==0 ){
+ aPoslist = pList;
+ nPoslist = nList;
+
+ }else{
+ char *aOut = pList;
+ char *p1 = aPoslist;
+ char *p2 = aOut;
+
+ assert( iPrev>=0 );
+ fts3PoslistPhraseMerge(&aOut, iToken-iPrev, 0, 1, &p1, &p2);
+ sqlite3_free(aPoslist);
+ aPoslist = pList;
+ nPoslist = aOut - aPoslist;
+ if( nPoslist==0 ){
+ sqlite3_free(aPoslist);
+ pPhrase->doclist.pList = 0;
+ pPhrase->doclist.nList = 0;
+ return SQLITE_OK;
+ }
+ }
+ iPrev = iToken;
+ }
+ }
+
+ if( iPrev>=0 ){
+ int nMaxUndeferred = pPhrase->iDoclistToken;
+ if( nMaxUndeferred<0 ){
+ pPhrase->doclist.pList = aPoslist;
+ pPhrase->doclist.nList = nPoslist;
+ pPhrase->doclist.iDocid = pCsr->iPrevId;
+ pPhrase->doclist.bFreeList = 1;
+ }else{
+ int nDistance;
+ char *p1;
+ char *p2;
+ char *aOut;
+
+ if( nMaxUndeferred>iPrev ){
+ p1 = aPoslist;
+ p2 = pPhrase->doclist.pList;
+ nDistance = nMaxUndeferred - iPrev;
+ }else{
+ p1 = pPhrase->doclist.pList;
+ p2 = aPoslist;
+ nDistance = iPrev - nMaxUndeferred;
+ }
+
+ aOut = (char *)sqlite3_malloc(nPoslist+8);
+ if( !aOut ){
+ sqlite3_free(aPoslist);
+ return SQLITE_NOMEM;
+ }
+
+ pPhrase->doclist.pList = aOut;
+ if( fts3PoslistPhraseMerge(&aOut, nDistance, 0, 1, &p1, &p2) ){
+ pPhrase->doclist.bFreeList = 1;
+ pPhrase->doclist.nList = (aOut - pPhrase->doclist.pList);
+ }else{
+ sqlite3_free(aOut);
+ pPhrase->doclist.pList = 0;
+ pPhrase->doclist.nList = 0;
+ }
+ sqlite3_free(aPoslist);
+ }
+ }
+
+ return SQLITE_OK;
+}
+
+/*
+** This function is called for each Fts3Phrase in a full-text query
+** expression to initialize the mechanism for returning rows. Once this
+** function has been called successfully on an Fts3Phrase, it may be
+** used with fts3EvalPhraseNext() to iterate through the matching docids.
+**
+** If parameter bOptOk is true, then the phrase may (or may not) use the
+** incremental loading strategy. Otherwise, the entire doclist is loaded into
+** memory within this call.
+**
+** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code.
+*/
+static int fts3EvalPhraseStart(Fts3Cursor *pCsr, int bOptOk, Fts3Phrase *p){
+ int rc; /* Error code */
+ Fts3PhraseToken *pFirst = &p->aToken[0];
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+
+ if( pCsr->bDesc==pTab->bDescIdx
+ && bOptOk==1
+ && p->nToken==1
+ && pFirst->pSegcsr
+ && pFirst->pSegcsr->bLookup
+ && pFirst->bFirst==0
+ ){
+ /* Use the incremental approach. */
+ int iCol = (p->iColumn >= pTab->nColumn ? -1 : p->iColumn);
+ rc = sqlite3Fts3MsrIncrStart(
+ pTab, pFirst->pSegcsr, iCol, pFirst->z, pFirst->n);
+ p->bIncr = 1;
+
+ }else{
+ /* Load the full doclist for the phrase into memory. */
+ rc = fts3EvalPhraseLoad(pCsr, p);
+ p->bIncr = 0;
+ }
+
+ assert( rc!=SQLITE_OK || p->nToken<1 || p->aToken[0].pSegcsr==0 || p->bIncr );
+ return rc;
+}
+
+/*
+** This function is used to iterate backwards (from the end to start)
+** through doclists. It is used by this module to iterate through phrase
+** doclists in reverse and by the fts3_write.c module to iterate through
+** pending-terms lists when writing to databases with "order=desc".
+**
+** The doclist may be sorted in ascending (parameter bDescIdx==0) or
+** descending (parameter bDescIdx==1) order of docid. Regardless, this
+** function iterates from the end of the doclist to the beginning.
+*/
+SQLITE_PRIVATE void sqlite3Fts3DoclistPrev(
+ int bDescIdx, /* True if the doclist is desc */
+ char *aDoclist, /* Pointer to entire doclist */
+ int nDoclist, /* Length of aDoclist in bytes */
+ char **ppIter, /* IN/OUT: Iterator pointer */
+ sqlite3_int64 *piDocid, /* IN/OUT: Docid pointer */
+ int *pnList, /* IN/OUT: List length pointer */
+ u8 *pbEof /* OUT: End-of-file flag */
+){
+ char *p = *ppIter;
+
+ assert( nDoclist>0 );
+ assert( *pbEof==0 );
+ assert( p || *piDocid==0 );
+ assert( !p || (p>aDoclist && p<&aDoclist[nDoclist]) );
+
+ if( p==0 ){
+ sqlite3_int64 iDocid = 0;
+ char *pNext = 0;
+ char *pDocid = aDoclist;
+ char *pEnd = &aDoclist[nDoclist];
+ int iMul = 1;
+
+ while( pDocid<pEnd ){
+ sqlite3_int64 iDelta;
+ pDocid += sqlite3Fts3GetVarint(pDocid, &iDelta);
+ iDocid += (iMul * iDelta);
+ pNext = pDocid;
+ fts3PoslistCopy(0, &pDocid);
+ while( pDocid<pEnd && *pDocid==0 ) pDocid++;
+ iMul = (bDescIdx ? -1 : 1);
+ }
+
+ *pnList = pEnd - pNext;
+ *ppIter = pNext;
+ *piDocid = iDocid;
+ }else{
+ int iMul = (bDescIdx ? -1 : 1);
+ sqlite3_int64 iDelta;
+ fts3GetReverseVarint(&p, aDoclist, &iDelta);
+ *piDocid -= (iMul * iDelta);
+
+ if( p==aDoclist ){
+ *pbEof = 1;
+ }else{
+ char *pSave = p;
+ fts3ReversePoslist(aDoclist, &p);
+ *pnList = (pSave - p);
+ }
+ *ppIter = p;
+ }
+}
+
+/*
+** Attempt to move the phrase iterator to point to the next matching docid.
+** If an error occurs, return an SQLite error code. Otherwise, return
+** SQLITE_OK.
+**
+** If there is no "next" entry and no error occurs, then *pbEof is set to
+** 1 before returning. Otherwise, if no error occurs and the iterator is
+** successfully advanced, *pbEof is set to 0.
+*/
+static int fts3EvalPhraseNext(
+ Fts3Cursor *pCsr, /* FTS Cursor handle */
+ Fts3Phrase *p, /* Phrase object to advance to next docid */
+ u8 *pbEof /* OUT: Set to 1 if EOF */
+){
+ int rc = SQLITE_OK;
+ Fts3Doclist *pDL = &p->doclist;
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+
+ if( p->bIncr ){
+ assert( p->nToken==1 );
+ assert( pDL->pNextDocid==0 );
+ rc = sqlite3Fts3MsrIncrNext(pTab, p->aToken[0].pSegcsr,
+ &pDL->iDocid, &pDL->pList, &pDL->nList
+ );
+ if( rc==SQLITE_OK && !pDL->pList ){
+ *pbEof = 1;
+ }
+ }else if( pCsr->bDesc!=pTab->bDescIdx && pDL->nAll ){
+ sqlite3Fts3DoclistPrev(pTab->bDescIdx, pDL->aAll, pDL->nAll,
+ &pDL->pNextDocid, &pDL->iDocid, &pDL->nList, pbEof
+ );
+ pDL->pList = pDL->pNextDocid;
+ }else{
+ char *pIter; /* Used to iterate through aAll */
+ char *pEnd = &pDL->aAll[pDL->nAll]; /* 1 byte past end of aAll */
+ if( pDL->pNextDocid ){
+ pIter = pDL->pNextDocid;
+ }else{
+ pIter = pDL->aAll;
+ }
+
+ if( pIter>=pEnd ){
+ /* We have already reached the end of this doclist. EOF. */
+ *pbEof = 1;
+ }else{
+ sqlite3_int64 iDelta;
+ pIter += sqlite3Fts3GetVarint(pIter, &iDelta);
+ if( pTab->bDescIdx==0 || pDL->pNextDocid==0 ){
+ pDL->iDocid += iDelta;
+ }else{
+ pDL->iDocid -= iDelta;
+ }
+ pDL->pList = pIter;
+ fts3PoslistCopy(0, &pIter);
+ pDL->nList = (pIter - pDL->pList);
+
+ /* pIter now points just past the 0x00 that terminates the position-
+ ** list for document pDL->iDocid. However, if this position-list was
+ ** edited in place by fts3EvalNearTrim(), then pIter may not actually
+ ** point to the start of the next docid value. The following line deals
+ ** with this case by advancing pIter past the zero-padding added by
+ ** fts3EvalNearTrim(). */
+ while( pIter<pEnd && *pIter==0 ) pIter++;
+
+ pDL->pNextDocid = pIter;
+ assert( pIter>=&pDL->aAll[pDL->nAll] || *pIter );
+ *pbEof = 0;
+ }
+ }
+
+ return rc;
+}
+
+/*
+**
+** If *pRc is not SQLITE_OK when this function is called, it is a no-op.
+** Otherwise, fts3EvalPhraseStart() is called on all phrases within the
+** expression. Also the Fts3Expr.bDeferred variable is set to true for any
+** expressions for which all descendent tokens are deferred.
+**
+** If parameter bOptOk is zero, then it is guaranteed that the
+** Fts3Phrase.doclist.aAll/nAll variables contain the entire doclist for
+** each phrase in the expression (subject to deferred token processing).
+** Or, if bOptOk is non-zero, then one or more tokens within the expression
+** may be loaded incrementally, meaning doclist.aAll/nAll is not available.
+**
+** If an error occurs within this function, *pRc is set to an SQLite error
+** code before returning.
+*/
+static void fts3EvalStartReaders(
+ Fts3Cursor *pCsr, /* FTS Cursor handle */
+ Fts3Expr *pExpr, /* Expression to initialize phrases in */
+ int bOptOk, /* True to enable incremental loading */
+ int *pRc /* IN/OUT: Error code */
+){
+ if( pExpr && SQLITE_OK==*pRc ){
+ if( pExpr->eType==FTSQUERY_PHRASE ){
+ int i;
+ int nToken = pExpr->pPhrase->nToken;
+ for(i=0; i<nToken; i++){
+ if( pExpr->pPhrase->aToken[i].pDeferred==0 ) break;
+ }
+ pExpr->bDeferred = (i==nToken);
+ *pRc = fts3EvalPhraseStart(pCsr, bOptOk, pExpr->pPhrase);
+ }else{
+ fts3EvalStartReaders(pCsr, pExpr->pLeft, bOptOk, pRc);
+ fts3EvalStartReaders(pCsr, pExpr->pRight, bOptOk, pRc);
+ pExpr->bDeferred = (pExpr->pLeft->bDeferred && pExpr->pRight->bDeferred);
+ }
+ }
+}
+
+/*
+** An array of the following structures is assembled as part of the process
+** of selecting tokens to defer before the query starts executing (as part
+** of the xFilter() method). There is one element in the array for each
+** token in the FTS expression.
+**
+** Tokens are divided into AND/NEAR clusters. All tokens in a cluster belong
+** to phrases that are connected only by AND and NEAR operators (not OR or
+** NOT). When determining tokens to defer, each AND/NEAR cluster is considered
+** separately. The root of a tokens AND/NEAR cluster is stored in
+** Fts3TokenAndCost.pRoot.
+*/
+typedef struct Fts3TokenAndCost Fts3TokenAndCost;
+struct Fts3TokenAndCost {
+ Fts3Phrase *pPhrase; /* The phrase the token belongs to */
+ int iToken; /* Position of token in phrase */
+ Fts3PhraseToken *pToken; /* The token itself */
+ Fts3Expr *pRoot; /* Root of NEAR/AND cluster */
+ int nOvfl; /* Number of overflow pages to load doclist */
+ int iCol; /* The column the token must match */
+};
+
+/*
+** This function is used to populate an allocated Fts3TokenAndCost array.
+**
+** If *pRc is not SQLITE_OK when this function is called, it is a no-op.
+** Otherwise, if an error occurs during execution, *pRc is set to an
+** SQLite error code.
+*/
+static void fts3EvalTokenCosts(
+ Fts3Cursor *pCsr, /* FTS Cursor handle */
+ Fts3Expr *pRoot, /* Root of current AND/NEAR cluster */
+ Fts3Expr *pExpr, /* Expression to consider */
+ Fts3TokenAndCost **ppTC, /* Write new entries to *(*ppTC)++ */
+ Fts3Expr ***ppOr, /* Write new OR root to *(*ppOr)++ */
+ int *pRc /* IN/OUT: Error code */
+){
+ if( *pRc==SQLITE_OK ){
+ if( pExpr->eType==FTSQUERY_PHRASE ){
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
+ int i;
+ for(i=0; *pRc==SQLITE_OK && i<pPhrase->nToken; i++){
+ Fts3TokenAndCost *pTC = (*ppTC)++;
+ pTC->pPhrase = pPhrase;
+ pTC->iToken = i;
+ pTC->pRoot = pRoot;
+ pTC->pToken = &pPhrase->aToken[i];
+ pTC->iCol = pPhrase->iColumn;
+ *pRc = sqlite3Fts3MsrOvfl(pCsr, pTC->pToken->pSegcsr, &pTC->nOvfl);
+ }
+ }else if( pExpr->eType!=FTSQUERY_NOT ){
+ assert( pExpr->eType==FTSQUERY_OR
+ || pExpr->eType==FTSQUERY_AND
+ || pExpr->eType==FTSQUERY_NEAR
+ );
+ assert( pExpr->pLeft && pExpr->pRight );
+ if( pExpr->eType==FTSQUERY_OR ){
+ pRoot = pExpr->pLeft;
+ **ppOr = pRoot;
+ (*ppOr)++;
+ }
+ fts3EvalTokenCosts(pCsr, pRoot, pExpr->pLeft, ppTC, ppOr, pRc);
+ if( pExpr->eType==FTSQUERY_OR ){
+ pRoot = pExpr->pRight;
+ **ppOr = pRoot;
+ (*ppOr)++;
+ }
+ fts3EvalTokenCosts(pCsr, pRoot, pExpr->pRight, ppTC, ppOr, pRc);
+ }
+ }
+}
+
+/*
+** Determine the average document (row) size in pages. If successful,
+** write this value to *pnPage and return SQLITE_OK. Otherwise, return
+** an SQLite error code.
+**
+** The average document size in pages is calculated by first calculating
+** determining the average size in bytes, B. If B is less than the amount
+** of data that will fit on a single leaf page of an intkey table in
+** this database, then the average docsize is 1. Otherwise, it is 1 plus
+** the number of overflow pages consumed by a record B bytes in size.
+*/
+static int fts3EvalAverageDocsize(Fts3Cursor *pCsr, int *pnPage){
+ if( pCsr->nRowAvg==0 ){
+ /* The average document size, which is required to calculate the cost
+ ** of each doclist, has not yet been determined. Read the required
+ ** data from the %_stat table to calculate it.
+ **
+ ** Entry 0 of the %_stat table is a blob containing (nCol+1) FTS3
+ ** varints, where nCol is the number of columns in the FTS3 table.
+ ** The first varint is the number of documents currently stored in
+ ** the table. The following nCol varints contain the total amount of
+ ** data stored in all rows of each column of the table, from left
+ ** to right.
+ */
+ int rc;
+ Fts3Table *p = (Fts3Table*)pCsr->base.pVtab;
+ sqlite3_stmt *pStmt;
+ sqlite3_int64 nDoc = 0;
+ sqlite3_int64 nByte = 0;
+ const char *pEnd;
+ const char *a;
+
+ rc = sqlite3Fts3SelectDoctotal(p, &pStmt);
+ if( rc!=SQLITE_OK ) return rc;
+ a = sqlite3_column_blob(pStmt, 0);
+ assert( a );
+
+ pEnd = &a[sqlite3_column_bytes(pStmt, 0)];
+ a += sqlite3Fts3GetVarint(a, &nDoc);
+ while( a<pEnd ){
+ a += sqlite3Fts3GetVarint(a, &nByte);
+ }
+ if( nDoc==0 || nByte==0 ){
+ sqlite3_reset(pStmt);
+ return FTS_CORRUPT_VTAB;
+ }
+
+ pCsr->nDoc = nDoc;
+ pCsr->nRowAvg = (int)(((nByte / nDoc) + p->nPgsz) / p->nPgsz);
+ assert( pCsr->nRowAvg>0 );
+ rc = sqlite3_reset(pStmt);
+ if( rc!=SQLITE_OK ) return rc;
+ }
+
+ *pnPage = pCsr->nRowAvg;
+ return SQLITE_OK;
+}
+
+/*
+** This function is called to select the tokens (if any) that will be
+** deferred. The array aTC[] has already been populated when this is
+** called.
+**
+** This function is called once for each AND/NEAR cluster in the
+** expression. Each invocation determines which tokens to defer within
+** the cluster with root node pRoot. See comments above the definition
+** of struct Fts3TokenAndCost for more details.
+**
+** If no error occurs, SQLITE_OK is returned and sqlite3Fts3DeferToken()
+** called on each token to defer. Otherwise, an SQLite error code is
+** returned.
+*/
+static int fts3EvalSelectDeferred(
+ Fts3Cursor *pCsr, /* FTS Cursor handle */
+ Fts3Expr *pRoot, /* Consider tokens with this root node */
+ Fts3TokenAndCost *aTC, /* Array of expression tokens and costs */
+ int nTC /* Number of entries in aTC[] */
+){
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+ int nDocSize = 0; /* Number of pages per doc loaded */
+ int rc = SQLITE_OK; /* Return code */
+ int ii; /* Iterator variable for various purposes */
+ int nOvfl = 0; /* Total overflow pages used by doclists */
+ int nToken = 0; /* Total number of tokens in cluster */
+
+ int nMinEst = 0; /* The minimum count for any phrase so far. */
+ int nLoad4 = 1; /* (Phrases that will be loaded)^4. */
+
+ /* Tokens are never deferred for FTS tables created using the content=xxx
+ ** option. The reason being that it is not guaranteed that the content
+ ** table actually contains the same data as the index. To prevent this from
+ ** causing any problems, the deferred token optimization is completely
+ ** disabled for content=xxx tables. */
+ if( pTab->zContentTbl ){
+ return SQLITE_OK;
+ }
+
+ /* Count the tokens in this AND/NEAR cluster. If none of the doclists
+ ** associated with the tokens spill onto overflow pages, or if there is
+ ** only 1 token, exit early. No tokens to defer in this case. */
+ for(ii=0; ii<nTC; ii++){
+ if( aTC[ii].pRoot==pRoot ){
+ nOvfl += aTC[ii].nOvfl;
+ nToken++;
+ }
+ }
+ if( nOvfl==0 || nToken<2 ) return SQLITE_OK;
+
+ /* Obtain the average docsize (in pages). */
+ rc = fts3EvalAverageDocsize(pCsr, &nDocSize);
+ assert( rc!=SQLITE_OK || nDocSize>0 );
+
+
+ /* Iterate through all tokens in this AND/NEAR cluster, in ascending order
+ ** of the number of overflow pages that will be loaded by the pager layer
+ ** to retrieve the entire doclist for the token from the full-text index.
+ ** Load the doclists for tokens that are either:
+ **
+ ** a. The cheapest token in the entire query (i.e. the one visited by the
+ ** first iteration of this loop), or
+ **
+ ** b. Part of a multi-token phrase.
+ **
+ ** After each token doclist is loaded, merge it with the others from the
+ ** same phrase and count the number of documents that the merged doclist
+ ** contains. Set variable "nMinEst" to the smallest number of documents in
+ ** any phrase doclist for which 1 or more token doclists have been loaded.
+ ** Let nOther be the number of other phrases for which it is certain that
+ ** one or more tokens will not be deferred.
+ **
+ ** Then, for each token, defer it if loading the doclist would result in
+ ** loading N or more overflow pages into memory, where N is computed as:
+ **
+ ** (nMinEst + 4^nOther - 1) / (4^nOther)
+ */
+ for(ii=0; ii<nToken && rc==SQLITE_OK; ii++){
+ int iTC; /* Used to iterate through aTC[] array. */
+ Fts3TokenAndCost *pTC = 0; /* Set to cheapest remaining token. */
+
+ /* Set pTC to point to the cheapest remaining token. */
+ for(iTC=0; iTC<nTC; iTC++){
+ if( aTC[iTC].pToken && aTC[iTC].pRoot==pRoot
+ && (!pTC || aTC[iTC].nOvfl<pTC->nOvfl)
+ ){
+ pTC = &aTC[iTC];
+ }
+ }
+ assert( pTC );
+
+ if( ii && pTC->nOvfl>=((nMinEst+(nLoad4/4)-1)/(nLoad4/4))*nDocSize ){
+ /* The number of overflow pages to load for this (and therefore all
+ ** subsequent) tokens is greater than the estimated number of pages
+ ** that will be loaded if all subsequent tokens are deferred.
+ */
+ Fts3PhraseToken *pToken = pTC->pToken;
+ rc = sqlite3Fts3DeferToken(pCsr, pToken, pTC->iCol);
+ fts3SegReaderCursorFree(pToken->pSegcsr);
+ pToken->pSegcsr = 0;
+ }else{
+ /* Set nLoad4 to the value of (4^nOther) for the next iteration of the
+ ** for-loop. Except, limit the value to 2^24 to prevent it from
+ ** overflowing the 32-bit integer it is stored in. */
+ if( ii<12 ) nLoad4 = nLoad4*4;
+
+ if( ii==0 || pTC->pPhrase->nToken>1 ){
+ /* Either this is the cheapest token in the entire query, or it is
+ ** part of a multi-token phrase. Either way, the entire doclist will
+ ** (eventually) be loaded into memory. It may as well be now. */
+ Fts3PhraseToken *pToken = pTC->pToken;
+ int nList = 0;
+ char *pList = 0;
+ rc = fts3TermSelect(pTab, pToken, pTC->iCol, &nList, &pList);
+ assert( rc==SQLITE_OK || pList==0 );
+ if( rc==SQLITE_OK ){
+ int nCount;
+ fts3EvalPhraseMergeToken(pTab, pTC->pPhrase, pTC->iToken,pList,nList);
+ nCount = fts3DoclistCountDocids(
+ pTC->pPhrase->doclist.aAll, pTC->pPhrase->doclist.nAll
+ );
+ if( ii==0 || nCount<nMinEst ) nMinEst = nCount;
+ }
+ }
+ }
+ pTC->pToken = 0;
+ }
+
+ return rc;
+}
+
+/*
+** This function is called from within the xFilter method. It initializes
+** the full-text query currently stored in pCsr->pExpr. To iterate through
+** the results of a query, the caller does:
+**
+** fts3EvalStart(pCsr);
+** while( 1 ){
+** fts3EvalNext(pCsr);
+** if( pCsr->bEof ) break;
+** ... return row pCsr->iPrevId to the caller ...
+** }
+*/
+static int fts3EvalStart(Fts3Cursor *pCsr){
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+ int rc = SQLITE_OK;
+ int nToken = 0;
+ int nOr = 0;
+
+ /* Allocate a MultiSegReader for each token in the expression. */
+ fts3EvalAllocateReaders(pCsr, pCsr->pExpr, &nToken, &nOr, &rc);
+
+ /* Determine which, if any, tokens in the expression should be deferred. */
+ if( rc==SQLITE_OK && nToken>1 && pTab->bHasStat ){
+ Fts3TokenAndCost *aTC;
+ Fts3Expr **apOr;
+ aTC = (Fts3TokenAndCost *)sqlite3_malloc(
+ sizeof(Fts3TokenAndCost) * nToken
+ + sizeof(Fts3Expr *) * nOr * 2
+ );
+ apOr = (Fts3Expr **)&aTC[nToken];
+
+ if( !aTC ){
+ rc = SQLITE_NOMEM;
+ }else{
+ int ii;
+ Fts3TokenAndCost *pTC = aTC;
+ Fts3Expr **ppOr = apOr;
+
+ fts3EvalTokenCosts(pCsr, 0, pCsr->pExpr, &pTC, &ppOr, &rc);
+ nToken = pTC-aTC;
+ nOr = ppOr-apOr;
+
+ if( rc==SQLITE_OK ){
+ rc = fts3EvalSelectDeferred(pCsr, 0, aTC, nToken);
+ for(ii=0; rc==SQLITE_OK && ii<nOr; ii++){
+ rc = fts3EvalSelectDeferred(pCsr, apOr[ii], aTC, nToken);
+ }
+ }
+
+ sqlite3_free(aTC);
+ }
+ }
+
+ fts3EvalStartReaders(pCsr, pCsr->pExpr, 1, &rc);
+ return rc;
+}
+
+/*
+** Invalidate the current position list for phrase pPhrase.
+*/
+static void fts3EvalInvalidatePoslist(Fts3Phrase *pPhrase){
+ if( pPhrase->doclist.bFreeList ){
+ sqlite3_free(pPhrase->doclist.pList);
+ }
+ pPhrase->doclist.pList = 0;
+ pPhrase->doclist.nList = 0;
+ pPhrase->doclist.bFreeList = 0;
+}
+
+/*
+** This function is called to edit the position list associated with
+** the phrase object passed as the fifth argument according to a NEAR
+** condition. For example:
+**
+** abc NEAR/5 "def ghi"
+**
+** Parameter nNear is passed the NEAR distance of the expression (5 in
+** the example above). When this function is called, *paPoslist points to
+** the position list, and *pnToken is the number of phrase tokens in, the
+** phrase on the other side of the NEAR operator to pPhrase. For example,
+** if pPhrase refers to the "def ghi" phrase, then *paPoslist points to
+** the position list associated with phrase "abc".
+**
+** All positions in the pPhrase position list that are not sufficiently
+** close to a position in the *paPoslist position list are removed. If this
+** leaves 0 positions, zero is returned. Otherwise, non-zero.
+**
+** Before returning, *paPoslist is set to point to the position lsit
+** associated with pPhrase. And *pnToken is set to the number of tokens in
+** pPhrase.
+*/
+static int fts3EvalNearTrim(
+ int nNear, /* NEAR distance. As in "NEAR/nNear". */
+ char *aTmp, /* Temporary space to use */
+ char **paPoslist, /* IN/OUT: Position list */
+ int *pnToken, /* IN/OUT: Tokens in phrase of *paPoslist */
+ Fts3Phrase *pPhrase /* The phrase object to trim the doclist of */
+){
+ int nParam1 = nNear + pPhrase->nToken;
+ int nParam2 = nNear + *pnToken;
+ int nNew;
+ char *p2;
+ char *pOut;
+ int res;
+
+ assert( pPhrase->doclist.pList );
+
+ p2 = pOut = pPhrase->doclist.pList;
+ res = fts3PoslistNearMerge(
+ &pOut, aTmp, nParam1, nParam2, paPoslist, &p2
+ );
+ if( res ){
+ nNew = (pOut - pPhrase->doclist.pList) - 1;
+ assert( pPhrase->doclist.pList[nNew]=='\0' );
+ assert( nNew<=pPhrase->doclist.nList && nNew>0 );
+ memset(&pPhrase->doclist.pList[nNew], 0, pPhrase->doclist.nList - nNew);
+ pPhrase->doclist.nList = nNew;
+ *paPoslist = pPhrase->doclist.pList;
+ *pnToken = pPhrase->nToken;
+ }
+
+ return res;
+}
+
+/*
+** This function is a no-op if *pRc is other than SQLITE_OK when it is called.
+** Otherwise, it advances the expression passed as the second argument to
+** point to the next matching row in the database. Expressions iterate through
+** matching rows in docid order. Ascending order if Fts3Cursor.bDesc is zero,
+** or descending if it is non-zero.
+**
+** If an error occurs, *pRc is set to an SQLite error code. Otherwise, if
+** successful, the following variables in pExpr are set:
+**
+** Fts3Expr.bEof (non-zero if EOF - there is no next row)
+** Fts3Expr.iDocid (valid if bEof==0. The docid of the next row)
+**
+** If the expression is of type FTSQUERY_PHRASE, and the expression is not
+** at EOF, then the following variables are populated with the position list
+** for the phrase for the visited row:
+**
+** FTs3Expr.pPhrase->doclist.nList (length of pList in bytes)
+** FTs3Expr.pPhrase->doclist.pList (pointer to position list)
+**
+** It says above that this function advances the expression to the next
+** matching row. This is usually true, but there are the following exceptions:
+**
+** 1. Deferred tokens are not taken into account. If a phrase consists
+** entirely of deferred tokens, it is assumed to match every row in
+** the db. In this case the position-list is not populated at all.
+**
+** Or, if a phrase contains one or more deferred tokens and one or
+** more non-deferred tokens, then the expression is advanced to the
+** next possible match, considering only non-deferred tokens. In other
+** words, if the phrase is "A B C", and "B" is deferred, the expression
+** is advanced to the next row that contains an instance of "A * C",
+** where "*" may match any single token. The position list in this case
+** is populated as for "A * C" before returning.
+**
+** 2. NEAR is treated as AND. If the expression is "x NEAR y", it is
+** advanced to point to the next row that matches "x AND y".
+**
+** See fts3EvalTestDeferredAndNear() for details on testing if a row is
+** really a match, taking into account deferred tokens and NEAR operators.
+*/
+static void fts3EvalNextRow(
+ Fts3Cursor *pCsr, /* FTS Cursor handle */
+ Fts3Expr *pExpr, /* Expr. to advance to next matching row */
+ int *pRc /* IN/OUT: Error code */
+){
+ if( *pRc==SQLITE_OK ){
+ int bDescDoclist = pCsr->bDesc; /* Used by DOCID_CMP() macro */
+ assert( pExpr->bEof==0 );
+ pExpr->bStart = 1;
+
+ switch( pExpr->eType ){
+ case FTSQUERY_NEAR:
+ case FTSQUERY_AND: {
+ Fts3Expr *pLeft = pExpr->pLeft;
+ Fts3Expr *pRight = pExpr->pRight;
+ assert( !pLeft->bDeferred || !pRight->bDeferred );
+
+ if( pLeft->bDeferred ){
+ /* LHS is entirely deferred. So we assume it matches every row.
+ ** Advance the RHS iterator to find the next row visited. */
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ pExpr->iDocid = pRight->iDocid;
+ pExpr->bEof = pRight->bEof;
+ }else if( pRight->bDeferred ){
+ /* RHS is entirely deferred. So we assume it matches every row.
+ ** Advance the LHS iterator to find the next row visited. */
+ fts3EvalNextRow(pCsr, pLeft, pRc);
+ pExpr->iDocid = pLeft->iDocid;
+ pExpr->bEof = pLeft->bEof;
+ }else{
+ /* Neither the RHS or LHS are deferred. */
+ fts3EvalNextRow(pCsr, pLeft, pRc);
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ while( !pLeft->bEof && !pRight->bEof && *pRc==SQLITE_OK ){
+ sqlite3_int64 iDiff = DOCID_CMP(pLeft->iDocid, pRight->iDocid);
+ if( iDiff==0 ) break;
+ if( iDiff<0 ){
+ fts3EvalNextRow(pCsr, pLeft, pRc);
+ }else{
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ }
+ }
+ pExpr->iDocid = pLeft->iDocid;
+ pExpr->bEof = (pLeft->bEof || pRight->bEof);
+ }
+ break;
+ }
+
+ case FTSQUERY_OR: {
+ Fts3Expr *pLeft = pExpr->pLeft;
+ Fts3Expr *pRight = pExpr->pRight;
+ sqlite3_int64 iCmp = DOCID_CMP(pLeft->iDocid, pRight->iDocid);
+
+ assert( pLeft->bStart || pLeft->iDocid==pRight->iDocid );
+ assert( pRight->bStart || pLeft->iDocid==pRight->iDocid );
+
+ if( pRight->bEof || (pLeft->bEof==0 && iCmp<0) ){
+ fts3EvalNextRow(pCsr, pLeft, pRc);
+ }else if( pLeft->bEof || (pRight->bEof==0 && iCmp>0) ){
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ }else{
+ fts3EvalNextRow(pCsr, pLeft, pRc);
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ }
+
+ pExpr->bEof = (pLeft->bEof && pRight->bEof);
+ iCmp = DOCID_CMP(pLeft->iDocid, pRight->iDocid);
+ if( pRight->bEof || (pLeft->bEof==0 && iCmp<0) ){
+ pExpr->iDocid = pLeft->iDocid;
+ }else{
+ pExpr->iDocid = pRight->iDocid;
+ }
+
+ break;
+ }
+
+ case FTSQUERY_NOT: {
+ Fts3Expr *pLeft = pExpr->pLeft;
+ Fts3Expr *pRight = pExpr->pRight;
+
+ if( pRight->bStart==0 ){
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ assert( *pRc!=SQLITE_OK || pRight->bStart );
+ }
+
+ fts3EvalNextRow(pCsr, pLeft, pRc);
+ if( pLeft->bEof==0 ){
+ while( !*pRc
+ && !pRight->bEof
+ && DOCID_CMP(pLeft->iDocid, pRight->iDocid)>0
+ ){
+ fts3EvalNextRow(pCsr, pRight, pRc);
+ }
+ }
+ pExpr->iDocid = pLeft->iDocid;
+ pExpr->bEof = pLeft->bEof;
+ break;
+ }
+
+ default: {
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
+ fts3EvalInvalidatePoslist(pPhrase);
+ *pRc = fts3EvalPhraseNext(pCsr, pPhrase, &pExpr->bEof);
+ pExpr->iDocid = pPhrase->doclist.iDocid;
+ break;
+ }
+ }
+ }
+}
+
+/*
+** If *pRc is not SQLITE_OK, or if pExpr is not the root node of a NEAR
+** cluster, then this function returns 1 immediately.
+**
+** Otherwise, it checks if the current row really does match the NEAR
+** expression, using the data currently stored in the position lists
+** (Fts3Expr->pPhrase.doclist.pList/nList) for each phrase in the expression.
+**
+** If the current row is a match, the position list associated with each
+** phrase in the NEAR expression is edited in place to contain only those
+** phrase instances sufficiently close to their peers to satisfy all NEAR
+** constraints. In this case it returns 1. If the NEAR expression does not
+** match the current row, 0 is returned. The position lists may or may not
+** be edited if 0 is returned.
+*/
+static int fts3EvalNearTest(Fts3Expr *pExpr, int *pRc){
+ int res = 1;
+
+ /* The following block runs if pExpr is the root of a NEAR query.
+ ** For example, the query:
+ **
+ ** "w" NEAR "x" NEAR "y" NEAR "z"
+ **
+ ** which is represented in tree form as:
+ **
+ ** |
+ ** +--NEAR--+ <-- root of NEAR query
+ ** | |
+ ** +--NEAR--+ "z"
+ ** | |
+ ** +--NEAR--+ "y"
+ ** | |
+ ** "w" "x"
+ **
+ ** The right-hand child of a NEAR node is always a phrase. The
+ ** left-hand child may be either a phrase or a NEAR node. There are
+ ** no exceptions to this - it's the way the parser in fts3_expr.c works.
+ */
+ if( *pRc==SQLITE_OK
+ && pExpr->eType==FTSQUERY_NEAR
+ && pExpr->bEof==0
+ && (pExpr->pParent==0 || pExpr->pParent->eType!=FTSQUERY_NEAR)
+ ){
+ Fts3Expr *p;
+ int nTmp = 0; /* Bytes of temp space */
+ char *aTmp; /* Temp space for PoslistNearMerge() */
+
+ /* Allocate temporary working space. */
+ for(p=pExpr; p->pLeft; p=p->pLeft){
+ nTmp += p->pRight->pPhrase->doclist.nList;
+ }
+ nTmp += p->pPhrase->doclist.nList;
+ aTmp = sqlite3_malloc(nTmp*2);
+ if( !aTmp ){
+ *pRc = SQLITE_NOMEM;
+ res = 0;
+ }else{
+ char *aPoslist = p->pPhrase->doclist.pList;
+ int nToken = p->pPhrase->nToken;
+
+ for(p=p->pParent;res && p && p->eType==FTSQUERY_NEAR; p=p->pParent){
+ Fts3Phrase *pPhrase = p->pRight->pPhrase;
+ int nNear = p->nNear;
+ res = fts3EvalNearTrim(nNear, aTmp, &aPoslist, &nToken, pPhrase);
+ }
+
+ aPoslist = pExpr->pRight->pPhrase->doclist.pList;
+ nToken = pExpr->pRight->pPhrase->nToken;
+ for(p=pExpr->pLeft; p && res; p=p->pLeft){
+ int nNear;
+ Fts3Phrase *pPhrase;
+ assert( p->pParent && p->pParent->pLeft==p );
+ nNear = p->pParent->nNear;
+ pPhrase = (
+ p->eType==FTSQUERY_NEAR ? p->pRight->pPhrase : p->pPhrase
+ );
+ res = fts3EvalNearTrim(nNear, aTmp, &aPoslist, &nToken, pPhrase);
+ }
+ }
+
+ sqlite3_free(aTmp);
+ }
+
+ return res;
+}
+
+/*
+** This function is a helper function for fts3EvalTestDeferredAndNear().
+** Assuming no error occurs or has occurred, It returns non-zero if the
+** expression passed as the second argument matches the row that pCsr
+** currently points to, or zero if it does not.
+**
+** If *pRc is not SQLITE_OK when this function is called, it is a no-op.
+** If an error occurs during execution of this function, *pRc is set to
+** the appropriate SQLite error code. In this case the returned value is
+** undefined.
+*/
+static int fts3EvalTestExpr(
+ Fts3Cursor *pCsr, /* FTS cursor handle */
+ Fts3Expr *pExpr, /* Expr to test. May or may not be root. */
+ int *pRc /* IN/OUT: Error code */
+){
+ int bHit = 1; /* Return value */
+ if( *pRc==SQLITE_OK ){
+ switch( pExpr->eType ){
+ case FTSQUERY_NEAR:
+ case FTSQUERY_AND:
+ bHit = (
+ fts3EvalTestExpr(pCsr, pExpr->pLeft, pRc)
+ && fts3EvalTestExpr(pCsr, pExpr->pRight, pRc)
+ && fts3EvalNearTest(pExpr, pRc)
+ );
+
+ /* If the NEAR expression does not match any rows, zero the doclist for
+ ** all phrases involved in the NEAR. This is because the snippet(),
+ ** offsets() and matchinfo() functions are not supposed to recognize
+ ** any instances of phrases that are part of unmatched NEAR queries.
+ ** For example if this expression:
+ **
+ ** ... MATCH 'a OR (b NEAR c)'
+ **
+ ** is matched against a row containing:
+ **
+ ** 'a b d e'
+ **
+ ** then any snippet() should ony highlight the "a" term, not the "b"
+ ** (as "b" is part of a non-matching NEAR clause).
+ */
+ if( bHit==0
+ && pExpr->eType==FTSQUERY_NEAR
+ && (pExpr->pParent==0 || pExpr->pParent->eType!=FTSQUERY_NEAR)
+ ){
+ Fts3Expr *p;
+ for(p=pExpr; p->pPhrase==0; p=p->pLeft){
+ if( p->pRight->iDocid==pCsr->iPrevId ){
+ fts3EvalInvalidatePoslist(p->pRight->pPhrase);
+ }
+ }
+ if( p->iDocid==pCsr->iPrevId ){
+ fts3EvalInvalidatePoslist(p->pPhrase);
+ }
+ }
+
+ break;
+
+ case FTSQUERY_OR: {
+ int bHit1 = fts3EvalTestExpr(pCsr, pExpr->pLeft, pRc);
+ int bHit2 = fts3EvalTestExpr(pCsr, pExpr->pRight, pRc);
+ bHit = bHit1 || bHit2;
+ break;
+ }
+
+ case FTSQUERY_NOT:
+ bHit = (
+ fts3EvalTestExpr(pCsr, pExpr->pLeft, pRc)
+ && !fts3EvalTestExpr(pCsr, pExpr->pRight, pRc)
+ );
+ break;
+
+ default: {
+ if( pCsr->pDeferred
+ && (pExpr->iDocid==pCsr->iPrevId || pExpr->bDeferred)
+ ){
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
+ assert( pExpr->bDeferred || pPhrase->doclist.bFreeList==0 );
+ if( pExpr->bDeferred ){
+ fts3EvalInvalidatePoslist(pPhrase);
+ }
+ *pRc = fts3EvalDeferredPhrase(pCsr, pPhrase);
+ bHit = (pPhrase->doclist.pList!=0);
+ pExpr->iDocid = pCsr->iPrevId;
+ }else{
+ bHit = (pExpr->bEof==0 && pExpr->iDocid==pCsr->iPrevId);
+ }
+ break;
+ }
+ }
+ }
+ return bHit;
+}
+
+/*
+** This function is called as the second part of each xNext operation when
+** iterating through the results of a full-text query. At this point the
+** cursor points to a row that matches the query expression, with the
+** following caveats:
+**
+** * Up until this point, "NEAR" operators in the expression have been
+** treated as "AND".
+**
+** * Deferred tokens have not yet been considered.
+**
+** If *pRc is not SQLITE_OK when this function is called, it immediately
+** returns 0. Otherwise, it tests whether or not after considering NEAR
+** operators and deferred tokens the current row is still a match for the
+** expression. It returns 1 if both of the following are true:
+**
+** 1. *pRc is SQLITE_OK when this function returns, and
+**
+** 2. After scanning the current FTS table row for the deferred tokens,
+** it is determined that the row does *not* match the query.
+**
+** Or, if no error occurs and it seems the current row does match the FTS
+** query, return 0.
+*/
+static int fts3EvalTestDeferredAndNear(Fts3Cursor *pCsr, int *pRc){
+ int rc = *pRc;
+ int bMiss = 0;
+ if( rc==SQLITE_OK ){
+
+ /* If there are one or more deferred tokens, load the current row into
+ ** memory and scan it to determine the position list for each deferred
+ ** token. Then, see if this row is really a match, considering deferred
+ ** tokens and NEAR operators (neither of which were taken into account
+ ** earlier, by fts3EvalNextRow()).
+ */
+ if( pCsr->pDeferred ){
+ rc = fts3CursorSeek(0, pCsr);
+ if( rc==SQLITE_OK ){
+ rc = sqlite3Fts3CacheDeferredDoclists(pCsr);
+ }
+ }
+ bMiss = (0==fts3EvalTestExpr(pCsr, pCsr->pExpr, &rc));
+
+ /* Free the position-lists accumulated for each deferred token above. */
+ sqlite3Fts3FreeDeferredDoclists(pCsr);
+ *pRc = rc;
+ }
+ return (rc==SQLITE_OK && bMiss);
+}
+
+/*
+** Advance to the next document that matches the FTS expression in
+** Fts3Cursor.pExpr.
+*/
+static int fts3EvalNext(Fts3Cursor *pCsr){
+ int rc = SQLITE_OK; /* Return Code */
+ Fts3Expr *pExpr = pCsr->pExpr;
+ assert( pCsr->isEof==0 );
+ if( pExpr==0 ){
+ pCsr->isEof = 1;
+ }else{
+ do {
+ if( pCsr->isRequireSeek==0 ){
+ sqlite3_reset(pCsr->pStmt);
+ }
+ assert( sqlite3_data_count(pCsr->pStmt)==0 );
+ fts3EvalNextRow(pCsr, pExpr, &rc);
+ pCsr->isEof = pExpr->bEof;
+ pCsr->isRequireSeek = 1;
+ pCsr->isMatchinfoNeeded = 1;
+ pCsr->iPrevId = pExpr->iDocid;
+ }while( pCsr->isEof==0 && fts3EvalTestDeferredAndNear(pCsr, &rc) );
+ }
+ return rc;
+}
+
+/*
+** Restart interation for expression pExpr so that the next call to
+** fts3EvalNext() visits the first row. Do not allow incremental
+** loading or merging of phrase doclists for this iteration.
+**
+** If *pRc is other than SQLITE_OK when this function is called, it is
+** a no-op. If an error occurs within this function, *pRc is set to an
+** SQLite error code before returning.
+*/
+static void fts3EvalRestart(
+ Fts3Cursor *pCsr,
+ Fts3Expr *pExpr,
+ int *pRc
+){
+ if( pExpr && *pRc==SQLITE_OK ){
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
+
+ if( pPhrase ){
+ fts3EvalInvalidatePoslist(pPhrase);
+ if( pPhrase->bIncr ){
+ assert( pPhrase->nToken==1 );
+ assert( pPhrase->aToken[0].pSegcsr );
+ sqlite3Fts3MsrIncrRestart(pPhrase->aToken[0].pSegcsr);
+ *pRc = fts3EvalPhraseStart(pCsr, 0, pPhrase);
+ }
+
+ pPhrase->doclist.pNextDocid = 0;
+ pPhrase->doclist.iDocid = 0;
+ }
+
+ pExpr->iDocid = 0;
+ pExpr->bEof = 0;
+ pExpr->bStart = 0;
+
+ fts3EvalRestart(pCsr, pExpr->pLeft, pRc);
+ fts3EvalRestart(pCsr, pExpr->pRight, pRc);
+ }
+}
+
+/*
+** After allocating the Fts3Expr.aMI[] array for each phrase in the
+** expression rooted at pExpr, the cursor iterates through all rows matched
+** by pExpr, calling this function for each row. This function increments
+** the values in Fts3Expr.aMI[] according to the position-list currently
+** found in Fts3Expr.pPhrase->doclist.pList for each of the phrase
+** expression nodes.
+*/
+static void fts3EvalUpdateCounts(Fts3Expr *pExpr){
+ if( pExpr ){
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
+ if( pPhrase && pPhrase->doclist.pList ){
+ int iCol = 0;
+ char *p = pPhrase->doclist.pList;
+
+ assert( *p );
+ while( 1 ){
+ u8 c = 0;
+ int iCnt = 0;
+ while( 0xFE & (*p | c) ){
+ if( (c&0x80)==0 ) iCnt++;
+ c = *p++ & 0x80;
+ }
+
+ /* aMI[iCol*3 + 1] = Number of occurrences
+ ** aMI[iCol*3 + 2] = Number of rows containing at least one instance
+ */
+ pExpr->aMI[iCol*3 + 1] += iCnt;
+ pExpr->aMI[iCol*3 + 2] += (iCnt>0);
+ if( *p==0x00 ) break;
+ p++;
+ p += sqlite3Fts3GetVarint32(p, &iCol);
+ }
+ }
+
+ fts3EvalUpdateCounts(pExpr->pLeft);
+ fts3EvalUpdateCounts(pExpr->pRight);
+ }
+}
+
+/*
+** Expression pExpr must be of type FTSQUERY_PHRASE.
+**
+** If it is not already allocated and populated, this function allocates and
+** populates the Fts3Expr.aMI[] array for expression pExpr. If pExpr is part
+** of a NEAR expression, then it also allocates and populates the same array
+** for all other phrases that are part of the NEAR expression.
+**
+** SQLITE_OK is returned if the aMI[] array is successfully allocated and
+** populated. Otherwise, if an error occurs, an SQLite error code is returned.
+*/
+static int fts3EvalGatherStats(
+ Fts3Cursor *pCsr, /* Cursor object */
+ Fts3Expr *pExpr /* FTSQUERY_PHRASE expression */
+){
+ int rc = SQLITE_OK; /* Return code */
+
+ assert( pExpr->eType==FTSQUERY_PHRASE );
+ if( pExpr->aMI==0 ){
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+ Fts3Expr *pRoot; /* Root of NEAR expression */
+ Fts3Expr *p; /* Iterator used for several purposes */
+
+ sqlite3_int64 iPrevId = pCsr->iPrevId;
+ sqlite3_int64 iDocid;
+ u8 bEof;
+
+ /* Find the root of the NEAR expression */
+ pRoot = pExpr;
+ while( pRoot->pParent && pRoot->pParent->eType==FTSQUERY_NEAR ){
+ pRoot = pRoot->pParent;
+ }
+ iDocid = pRoot->iDocid;
+ bEof = pRoot->bEof;
+ assert( pRoot->bStart );
+
+ /* Allocate space for the aMSI[] array of each FTSQUERY_PHRASE node */
+ for(p=pRoot; p; p=p->pLeft){
+ Fts3Expr *pE = (p->eType==FTSQUERY_PHRASE?p:p->pRight);
+ assert( pE->aMI==0 );
+ pE->aMI = (u32 *)sqlite3_malloc(pTab->nColumn * 3 * sizeof(u32));
+ if( !pE->aMI ) return SQLITE_NOMEM;
+ memset(pE->aMI, 0, pTab->nColumn * 3 * sizeof(u32));
+ }
+
+ fts3EvalRestart(pCsr, pRoot, &rc);
+
+ while( pCsr->isEof==0 && rc==SQLITE_OK ){
+
+ do {
+ /* Ensure the %_content statement is reset. */
+ if( pCsr->isRequireSeek==0 ) sqlite3_reset(pCsr->pStmt);
+ assert( sqlite3_data_count(pCsr->pStmt)==0 );
+
+ /* Advance to the next document */
+ fts3EvalNextRow(pCsr, pRoot, &rc);
+ pCsr->isEof = pRoot->bEof;
+ pCsr->isRequireSeek = 1;
+ pCsr->isMatchinfoNeeded = 1;
+ pCsr->iPrevId = pRoot->iDocid;
+ }while( pCsr->isEof==0
+ && pRoot->eType==FTSQUERY_NEAR
+ && fts3EvalTestDeferredAndNear(pCsr, &rc)
+ );
+
+ if( rc==SQLITE_OK && pCsr->isEof==0 ){
+ fts3EvalUpdateCounts(pRoot);
+ }
+ }
+
+ pCsr->isEof = 0;
+ pCsr->iPrevId = iPrevId;
+
+ if( bEof ){
+ pRoot->bEof = bEof;
+ }else{
+ /* Caution: pRoot may iterate through docids in ascending or descending
+ ** order. For this reason, even though it seems more defensive, the
+ ** do loop can not be written:
+ **
+ ** do {...} while( pRoot->iDocid<iDocid && rc==SQLITE_OK );
+ */
+ fts3EvalRestart(pCsr, pRoot, &rc);
+ do {
+ fts3EvalNextRow(pCsr, pRoot, &rc);
+ assert( pRoot->bEof==0 );
+ }while( pRoot->iDocid!=iDocid && rc==SQLITE_OK );
+ fts3EvalTestDeferredAndNear(pCsr, &rc);
+ }
+ }
+ return rc;
+}
+
+/*
+** This function is used by the matchinfo() module to query a phrase
+** expression node for the following information:
+**
+** 1. The total number of occurrences of the phrase in each column of
+** the FTS table (considering all rows), and
+**
+** 2. For each column, the number of rows in the table for which the
+** column contains at least one instance of the phrase.
+**
+** If no error occurs, SQLITE_OK is returned and the values for each column
+** written into the array aiOut as follows:
+**
+** aiOut[iCol*3 + 1] = Number of occurrences
+** aiOut[iCol*3 + 2] = Number of rows containing at least one instance
+**
+** Caveats:
+**
+** * If a phrase consists entirely of deferred tokens, then all output
+** values are set to the number of documents in the table. In other
+** words we assume that very common tokens occur exactly once in each
+** column of each row of the table.
+**
+** * If a phrase contains some deferred tokens (and some non-deferred
+** tokens), count the potential occurrence identified by considering
+** the non-deferred tokens instead of actual phrase occurrences.
+**
+** * If the phrase is part of a NEAR expression, then only phrase instances
+** that meet the NEAR constraint are included in the counts.
+*/
+SQLITE_PRIVATE int sqlite3Fts3EvalPhraseStats(
+ Fts3Cursor *pCsr, /* FTS cursor handle */
+ Fts3Expr *pExpr, /* Phrase expression */
+ u32 *aiOut /* Array to write results into (see above) */
+){
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+ int rc = SQLITE_OK;
+ int iCol;
+
+ if( pExpr->bDeferred && pExpr->pParent->eType!=FTSQUERY_NEAR ){
+ assert( pCsr->nDoc>0 );
+ for(iCol=0; iCol<pTab->nColumn; iCol++){
+ aiOut[iCol*3 + 1] = (u32)pCsr->nDoc;
+ aiOut[iCol*3 + 2] = (u32)pCsr->nDoc;
+ }
+ }else{
+ rc = fts3EvalGatherStats(pCsr, pExpr);
+ if( rc==SQLITE_OK ){
+ assert( pExpr->aMI );
+ for(iCol=0; iCol<pTab->nColumn; iCol++){
+ aiOut[iCol*3 + 1] = pExpr->aMI[iCol*3 + 1];
+ aiOut[iCol*3 + 2] = pExpr->aMI[iCol*3 + 2];
+ }
+ }
+ }
+
+ return rc;
+}
+
+/*
+** The expression pExpr passed as the second argument to this function
+** must be of type FTSQUERY_PHRASE.
+**
+** The returned value is either NULL or a pointer to a buffer containing
+** a position-list indicating the occurrences of the phrase in column iCol
+** of the current row.
+**
+** More specifically, the returned buffer contains 1 varint for each
+** occurence of the phrase in the column, stored using the normal (delta+2)
+** compression and is terminated by either an 0x01 or 0x00 byte. For example,
+** if the requested column contains "a b X c d X X" and the position-list
+** for 'X' is requested, the buffer returned may contain:
+**
+** 0x04 0x05 0x03 0x01 or 0x04 0x05 0x03 0x00
+**
+** This function works regardless of whether or not the phrase is deferred,
+** incremental, or neither.
+*/
+SQLITE_PRIVATE char *sqlite3Fts3EvalPhrasePoslist(
+ Fts3Cursor *pCsr, /* FTS3 cursor object */
+ Fts3Expr *pExpr, /* Phrase to return doclist for */
+ int iCol /* Column to return position list for */
+){
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
+ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
+ char *pIter = pPhrase->doclist.pList;
+ int iThis;
+
+ assert( iCol>=0 && iCol<pTab->nColumn );
+ if( !pIter
+ || pExpr->bEof
+ || pExpr->iDocid!=pCsr->iPrevId
+ || (pPhrase->iColumn<pTab->nColumn && pPhrase->iColumn!=iCol)
+ ){
+ return 0;
+ }
+
+ assert( pPhrase->doclist.nList>0 );
+ if( *pIter==0x01 ){
+ pIter++;
+ pIter += sqlite3Fts3GetVarint32(pIter, &iThis);
+ }else{
+ iThis = 0;
+ }
+ while( iThis<iCol ){
+ fts3ColumnlistCopy(0, &pIter);
+ if( *pIter==0x00 ) return 0;
+ pIter++;
+ pIter += sqlite3Fts3GetVarint32(pIter, &iThis);
+ }
+
+ return ((iCol==iThis)?pIter:0);
+}
+
+/*
+** Free all components of the Fts3Phrase structure that were allocated by
+** the eval module. Specifically, this means to free:
+**
+** * the contents of pPhrase->doclist, and
+** * any Fts3MultiSegReader objects held by phrase tokens.
+*/
+SQLITE_PRIVATE void sqlite3Fts3EvalPhraseCleanup(Fts3Phrase *pPhrase){
+ if( pPhrase ){
+ int i;
+ sqlite3_free(pPhrase->doclist.aAll);
+ fts3EvalInvalidatePoslist(pPhrase);
+ memset(&pPhrase->doclist, 0, sizeof(Fts3Doclist));
+ for(i=0; i<pPhrase->nToken; i++){
+ fts3SegReaderCursorFree(pPhrase->aToken[i].pSegcsr);
+ pPhrase->aToken[i].pSegcsr = 0;
+ }
+ }
+}
+
+/*
+** Return SQLITE_CORRUPT_VTAB.
+*/
+#ifdef SQLITE_DEBUG
+SQLITE_PRIVATE int sqlite3Fts3Corrupt(){
+ return SQLITE_CORRUPT_VTAB;
+}
+#endif
+
#if !SQLITE_CORE
+/*
+** Initialize API pointer table, if required.
+*/
SQLITE_API int sqlite3_extension_init(
sqlite3 *db,
char **pzErrMsg,
@@ -111874,6 +121445,482 @@
#endif
/************** End of fts3.c ************************************************/
+/************** Begin file fts3_aux.c ****************************************/
+/*
+** 2011 Jan 27
+**
+** The author disclaims copyright to this source code. In place of
+** a legal notice, here is a blessing:
+**
+** May you do good and not evil.
+** May you find forgiveness for yourself and forgive others.
+** May you share freely, never taking more than you give.
+**
+******************************************************************************
+**
+*/
+#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
+
+/* #include <string.h> */
+/* #include <assert.h> */
+
+typedef struct Fts3auxTable Fts3auxTable;
+typedef struct Fts3auxCursor Fts3auxCursor;
+
+struct Fts3auxTable {
+ sqlite3_vtab base; /* Base class used by SQLite core */
+ Fts3Table *pFts3Tab;
+};
+
+struct Fts3auxCursor {
+ sqlite3_vtab_cursor base; /* Base class used by SQLite core */
+ Fts3MultiSegReader csr; /* Must be right after "base" */
+ Fts3SegFilter filter;
+ char *zStop;
+ int nStop; /* Byte-length of string zStop */
+ int isEof; /* True if cursor is at EOF */
+ sqlite3_int64 iRowid; /* Current rowid */
+
+ int iCol; /* Current value of 'col' column */
+ int nStat; /* Size of aStat[] array */
+ struct Fts3auxColstats {
+ sqlite3_int64 nDoc; /* 'documents' values for current csr row */
+ sqlite3_int64 nOcc; /* 'occurrences' values for current csr row */
+ } *aStat;
+};
+
+/*
+** Schema of the terms table.
+*/
+#define FTS3_TERMS_SCHEMA "CREATE TABLE x(term, col, documents, occurrences)"
+
+/*
+** This function does all the work for both the xConnect and xCreate methods.
+** These tables have no persistent representation of their own, so xConnect
+** and xCreate are identical operations.
+*/
+static int fts3auxConnectMethod(
+ sqlite3 *db, /* Database connection */
+ void *pUnused, /* Unused */
+ int argc, /* Number of elements in argv array */
+ const char * const *argv, /* xCreate/xConnect argument array */
+ sqlite3_vtab **ppVtab, /* OUT: New sqlite3_vtab object */
+ char **pzErr /* OUT: sqlite3_malloc'd error message */
+){
+ char const *zDb; /* Name of database (e.g. "main") */
+ char const *zFts3; /* Name of fts3 table */
+ int nDb; /* Result of strlen(zDb) */
+ int nFts3; /* Result of strlen(zFts3) */
+ int nByte; /* Bytes of space to allocate here */
+ int rc; /* value returned by declare_vtab() */
+ Fts3auxTable *p; /* Virtual table object to return */
+
+ UNUSED_PARAMETER(pUnused);
+
+ /* The user should specify a single argument - the name of an fts3 table. */
+ if( argc!=4 ){
+ *pzErr = sqlite3_mprintf(
+ "wrong number of arguments to fts4aux constructor"
+ );
+ return SQLITE_ERROR;
+ }
+
+ zDb = argv[1];
+ nDb = strlen(zDb);
+ zFts3 = argv[3];
+ nFts3 = strlen(zFts3);
+
+ rc = sqlite3_declare_vtab(db, FTS3_TERMS_SCHEMA);
+ if( rc!=SQLITE_OK ) return rc;
+
+ nByte = sizeof(Fts3auxTable) + sizeof(Fts3Table) + nDb + nFts3 + 2;
+ p = (Fts3auxTable *)sqlite3_malloc(nByte);
+ if( !p ) return SQLITE_NOMEM;
+ memset(p, 0, nByte);
+
+ p->pFts3Tab = (Fts3Table *)&p[1];
+ p->pFts3Tab->zDb = (char *)&p->pFts3Tab[1];
+ p->pFts3Tab->zName = &p->pFts3Tab->zDb[nDb+1];
+ p->pFts3Tab->db = db;
+ p->pFts3Tab->nIndex = 1;
+
+ memcpy((char *)p->pFts3Tab->zDb, zDb, nDb);
+ memcpy((char *)p->pFts3Tab->zName, zFts3, nFts3);
+ sqlite3Fts3Dequote((char *)p->pFts3Tab->zName);
+
+ *ppVtab = (sqlite3_vtab *)p;
+ return SQLITE_OK;
+}
+
+/*
+** This function does the work for both the xDisconnect and xDestroy methods.
+** These tables have no persistent representation of their own, so xDisconnect
+** and xDestroy are identical operations.
+*/
+static int fts3auxDisconnectMethod(sqlite3_vtab *pVtab){
+ Fts3auxTable *p = (Fts3auxTable *)pVtab;
+ Fts3Table *pFts3 = p->pFts3Tab;
+ int i;
+
+ /* Free any prepared statements held */
+ for(i=0; i<SizeofArray(pFts3->aStmt); i++){
+ sqlite3_finalize(pFts3->aStmt[i]);
+ }
+ sqlite3_free(pFts3->zSegmentsTbl);
+ sqlite3_free(p);
+ return SQLITE_OK;
+}
+
+#define FTS4AUX_EQ_CONSTRAINT 1
+#define FTS4AUX_GE_CONSTRAINT 2
+#define FTS4AUX_LE_CONSTRAINT 4
+
+/*
+** xBestIndex - Analyze a WHERE and ORDER BY clause.
+*/
+static int fts3auxBestIndexMethod(
+ sqlite3_vtab *pVTab,
+ sqlite3_index_info *pInfo
+){
+ int i;
+ int iEq = -1;
+ int iGe = -1;
+ int iLe = -1;
+
+ UNUSED_PARAMETER(pVTab);
+
+ /* This vtab delivers always results in "ORDER BY term ASC" order. */
+ if( pInfo->nOrderBy==1
+ && pInfo->aOrderBy[0].iColumn==0
+ && pInfo->aOrderBy[0].desc==0
+ ){
+ pInfo->orderByConsumed = 1;
+ }
+
+ /* Search for equality and range constraints on the "term" column. */
+ for(i=0; i<pInfo->nConstraint; i++){
+ if( pInfo->aConstraint[i].usable && pInfo->aConstraint[i].iColumn==0 ){
+ int op = pInfo->aConstraint[i].op;
+ if( op==SQLITE_INDEX_CONSTRAINT_EQ ) iEq = i;
+ if( op==SQLITE_INDEX_CONSTRAINT_LT ) iLe = i;
+ if( op==SQLITE_INDEX_CONSTRAINT_LE ) iLe = i;
+ if( op==SQLITE_INDEX_CONSTRAINT_GT ) iGe = i;
+ if( op==SQLITE_INDEX_CONSTRAINT_GE ) iGe = i;
+ }
+ }
+
+ if( iEq>=0 ){
+ pInfo->idxNum = FTS4AUX_EQ_CONSTRAINT;
+ pInfo->aConstraintUsage[iEq].argvIndex = 1;
+ pInfo->estimatedCost = 5;
+ }else{
+ pInfo->idxNum = 0;
+ pInfo->estimatedCost = 20000;
+ if( iGe>=0 ){
+ pInfo->idxNum += FTS4AUX_GE_CONSTRAINT;
+ pInfo->aConstraintUsage[iGe].argvIndex = 1;
+ pInfo->estimatedCost /= 2;
+ }
+ if( iLe>=0 ){
+ pInfo->idxNum += FTS4AUX_LE_CONSTRAINT;
+ pInfo->aConstraintUsage[iLe].argvIndex = 1 + (iGe>=0);
+ pInfo->estimatedCost /= 2;
+ }
+ }
+
+ return SQLITE_OK;
+}
+
+/*
+** xOpen - Open a cursor.
+*/
+static int fts3auxOpenMethod(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCsr){
+ Fts3auxCursor *pCsr; /* Pointer to cursor object to return */
+
+ UNUSED_PARAMETER(pVTab);
+
+ pCsr = (Fts3auxCursor *)sqlite3_malloc(sizeof(Fts3auxCursor));
+ if( !pCsr ) return SQLITE_NOMEM;
+ memset(pCsr, 0, sizeof(Fts3auxCursor));
+
+ *ppCsr = (sqlite3_vtab_cursor *)pCsr;
+ return SQLITE_OK;
+}
+
+/*
+** xClose - Close a cursor.
+*/
+static int fts3auxCloseMethod(sqlite3_vtab_cursor *pCursor){
+ Fts3Table *pFts3 = ((Fts3auxTable *)pCursor->pVtab)->pFts3Tab;
+ Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor;
+
+ sqlite3Fts3SegmentsClose(pFts3);
+ sqlite3Fts3SegReaderFinish(&pCsr->csr);
+ sqlite3_free((void *)pCsr->filter.zTerm);
+ sqlite3_free(pCsr->zStop);
+ sqlite3_free(pCsr->aStat);
+ sqlite3_free(pCsr);
+ return SQLITE_OK;
+}
+
+static int fts3auxGrowStatArray(Fts3auxCursor *pCsr, int nSize){
+ if( nSize>pCsr->nStat ){
+ struct Fts3auxColstats *aNew;
+ aNew = (struct Fts3auxColstats *)sqlite3_realloc(pCsr->aStat,
+ sizeof(struct Fts3auxColstats) * nSize
+ );
+ if( aNew==0 ) return SQLITE_NOMEM;
+ memset(&aNew[pCsr->nStat], 0,
+ sizeof(struct Fts3auxColstats) * (nSize - pCsr->nStat)
+ );
+ pCsr->aStat = aNew;
+ pCsr->nStat = nSize;
+ }
+ return SQLITE_OK;
+}
+
+/*
+** xNext - Advance the cursor to the next row, if any.
+*/
+static int fts3auxNextMethod(sqlite3_vtab_cursor *pCursor){
+ Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor;
+ Fts3Table *pFts3 = ((Fts3auxTable *)pCursor->pVtab)->pFts3Tab;
+ int rc;
+
+ /* Increment our pretend rowid value. */
+ pCsr->iRowid++;
+
+ for(pCsr->iCol++; pCsr->iCol<pCsr->nStat; pCsr->iCol++){
+ if( pCsr->aStat[pCsr->iCol].nDoc>0 ) return SQLITE_OK;
+ }
+
+ rc = sqlite3Fts3SegReaderStep(pFts3, &pCsr->csr);
+ if( rc==SQLITE_ROW ){
+ int i = 0;
+ int nDoclist = pCsr->csr.nDoclist;
+ char *aDoclist = pCsr->csr.aDoclist;
+ int iCol;
+
+ int eState = 0;
+
+ if( pCsr->zStop ){
+ int n = (pCsr->nStop<pCsr->csr.nTerm) ? pCsr->nStop : pCsr->csr.nTerm;
+ int mc = memcmp(pCsr->zStop, pCsr->csr.zTerm, n);
+ if( mc<0 || (mc==0 && pCsr->csr.nTerm>pCsr->nStop) ){
+ pCsr->isEof = 1;
+ return SQLITE_OK;
+ }
+ }
+
+ if( fts3auxGrowStatArray(pCsr, 2) ) return SQLITE_NOMEM;
+ memset(pCsr->aStat, 0, sizeof(struct Fts3auxColstats) * pCsr->nStat);
+ iCol = 0;
+
+ while( i<nDoclist ){
+ sqlite3_int64 v = 0;
+
+ i += sqlite3Fts3GetVarint(&aDoclist[i], &v);
+ switch( eState ){
+ /* State 0. In this state the integer just read was a docid. */
+ case 0:
+ pCsr->aStat[0].nDoc++;
+ eState = 1;
+ iCol = 0;
+ break;
+
+ /* State 1. In this state we are expecting either a 1, indicating
+ ** that the following integer will be a column number, or the
+ ** start of a position list for column 0.
+ **
+ ** The only difference between state 1 and state 2 is that if the
+ ** integer encountered in state 1 is not 0 or 1, then we need to
+ ** increment the column 0 "nDoc" count for this term.
+ */
+ case 1:
+ assert( iCol==0 );
+ if( v>1 ){
+ pCsr->aStat[1].nDoc++;
+ }
+ eState = 2;
+ /* fall through */
+
+ case 2:
+ if( v==0 ){ /* 0x00. Next integer will be a docid. */
+ eState = 0;
+ }else if( v==1 ){ /* 0x01. Next integer will be a column number. */
+ eState = 3;
+ }else{ /* 2 or greater. A position. */
+ pCsr->aStat[iCol+1].nOcc++;
+ pCsr->aStat[0].nOcc++;
+ }
+ break;
+
+ /* State 3. The integer just read is a column number. */
+ default: assert( eState==3 );
+ iCol = (int)v;
+ if( fts3auxGrowStatArray(pCsr, iCol+2) ) return SQLITE_NOMEM;
+ pCsr->aStat[iCol+1].nDoc++;
+ eState = 2;
+ break;
+ }
+ }
+
+ pCsr->iCol = 0;
+ rc = SQLITE_OK;
+ }else{
+ pCsr->isEof = 1;
+ }
+ return rc;
+}
+
+/*
+** xFilter - Initialize a cursor to point at the start of its data.
+*/
+static int fts3auxFilterMethod(
+ sqlite3_vtab_cursor *pCursor, /* The cursor used for this query */
+ int idxNum, /* Strategy index */
+ const char *idxStr, /* Unused */
+ int nVal, /* Number of elements in apVal */
+ sqlite3_value **apVal /* Arguments for the indexing scheme */
+){
+ Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor;
+ Fts3Table *pFts3 = ((Fts3auxTable *)pCursor->pVtab)->pFts3Tab;
+ int rc;
+ int isScan;
+
+ UNUSED_PARAMETER(nVal);
+ UNUSED_PARAMETER(idxStr);
+
+ assert( idxStr==0 );
+ assert( idxNum==FTS4AUX_EQ_CONSTRAINT || idxNum==0
+ || idxNum==FTS4AUX_LE_CONSTRAINT || idxNum==FTS4AUX_GE_CONSTRAINT
+ || idxNum==(FTS4AUX_LE_CONSTRAINT|FTS4AUX_GE_CONSTRAINT)
+ );
+ isScan = (idxNum!=FTS4AUX_EQ_CONSTRAINT);
+
+ /* In case this cursor is being reused, close and zero it. */
+ testcase(pCsr->filter.zTerm);
+ sqlite3Fts3SegReaderFinish(&pCsr->csr);
+ sqlite3_free((void *)pCsr->filter.zTerm);
+ sqlite3_free(pCsr->aStat);
+ memset(&pCsr->csr, 0, ((u8*)&pCsr[1]) - (u8*)&pCsr->csr);
+
+ pCsr->filter.flags = FTS3_SEGMENT_REQUIRE_POS|FTS3_SEGMENT_IGNORE_EMPTY;
+ if( isScan ) pCsr->filter.flags |= FTS3_SEGMENT_SCAN;
+
+ if( idxNum&(FTS4AUX_EQ_CONSTRAINT|FTS4AUX_GE_CONSTRAINT) ){
+ const unsigned char *zStr = sqlite3_value_text(apVal[0]);
+ if( zStr ){
+ pCsr->filter.zTerm = sqlite3_mprintf("%s", zStr);
+ pCsr->filter.nTerm = sqlite3_value_bytes(apVal[0]);
+ if( pCsr->filter.zTerm==0 ) return SQLITE_NOMEM;
+ }
+ }
+ if( idxNum&FTS4AUX_LE_CONSTRAINT ){
+ int iIdx = (idxNum&FTS4AUX_GE_CONSTRAINT) ? 1 : 0;
+ pCsr->zStop = sqlite3_mprintf("%s", sqlite3_value_text(apVal[iIdx]));
+ pCsr->nStop = sqlite3_value_bytes(apVal[iIdx]);
+ if( pCsr->zStop==0 ) return SQLITE_NOMEM;
+ }
+
+ rc = sqlite3Fts3SegReaderCursor(pFts3, 0, FTS3_SEGCURSOR_ALL,
+ pCsr->filter.zTerm, pCsr->filter.nTerm, 0, isScan, &pCsr->csr
+ );
+ if( rc==SQLITE_OK ){
+ rc = sqlite3Fts3SegReaderStart(pFts3, &pCsr->csr, &pCsr->filter);
+ }
+
+ if( rc==SQLITE_OK ) rc = fts3auxNextMethod(pCursor);
+ return rc;
+}
+
+/*
+** xEof - Return true if the cursor is at EOF, or false otherwise.
+*/
+static int fts3auxEofMethod(sqlite3_vtab_cursor *pCursor){
+ Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor;
+ return pCsr->isEof;
+}
+
+/*
+** xColumn - Return a column value.
+*/
+static int fts3auxColumnMethod(
+ sqlite3_vtab_cursor *pCursor, /* Cursor to retrieve value from */
+ sqlite3_context *pContext, /* Context for sqlite3_result_xxx() calls */
+ int iCol /* Index of column to read value from */
+){
+ Fts3auxCursor *p = (Fts3auxCursor *)pCursor;
+
+ assert( p->isEof==0 );
+ if( iCol==0 ){ /* Column "term" */
+ sqlite3_result_text(pContext, p->csr.zTerm, p->csr.nTerm, SQLITE_TRANSIENT);
+ }else if( iCol==1 ){ /* Column "col" */
+ if( p->iCol ){
+ sqlite3_result_int(pContext, p->iCol-1);
+ }else{
+ sqlite3_result_text(pContext, "*", -1, SQLITE_STATIC);
+ }
+ }else if( iCol==2 ){ /* Column "documents" */
+ sqlite3_result_int64(pContext, p->aStat[p->iCol].nDoc);
+ }else{ /* Column "occurrences" */
+ sqlite3_result_int64(pContext, p->aStat[p->iCol].nOcc);
+ }
+
+ return SQLITE_OK;
+}
+
+/*
+** xRowid - Return the current rowid for the cursor.
+*/
+static int fts3auxRowidMethod(
+ sqlite3_vtab_cursor *pCursor, /* Cursor to retrieve value from */
+ sqlite_int64 *pRowid /* OUT: Rowid value */
+){
+ Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor;
+ *pRowid = pCsr->iRowid;
+ return SQLITE_OK;
+}
+
+/*
+** Register the fts3aux module with database connection db. Return SQLITE_OK
+** if successful or an error code if sqlite3_create_module() fails.
+*/
+SQLITE_PRIVATE int sqlite3Fts3InitAux(sqlite3 *db){
+ static const sqlite3_module fts3aux_module = {
+ 0, /* iVersion */
+ fts3auxConnectMethod, /* xCreate */
+ fts3auxConnectMethod, /* xConnect */
+ fts3auxBestIndexMethod, /* xBestIndex */
+ fts3auxDisconnectMethod, /* xDisconnect */
+ fts3auxDisconnectMethod, /* xDestroy */
+ fts3auxOpenMethod, /* xOpen */
+ fts3auxCloseMethod, /* xClose */
+ fts3auxFilterMethod, /* xFilter */
+ fts3auxNextMethod, /* xNext */
+ fts3auxEofMethod, /* xEof */
+ fts3auxColumnMethod, /* xColumn */
+ fts3auxRowidMethod, /* xRowid */
+ 0, /* xUpdate */
+ 0, /* xBegin */
+ 0, /* xSync */
+ 0, /* xCommit */
+ 0, /* xRollback */
+ 0, /* xFindFunction */
+ 0, /* xRename */
+ 0, /* xSavepoint */
+ 0, /* xRelease */
+ 0 /* xRollbackTo */
+ };
+ int rc; /* Return code */
+
+ rc = sqlite3_create_module(db, "fts4aux", &fts3aux_module, 0);
+ return rc;
+}
+
+#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */
+
+/************** End of fts3_aux.c ********************************************/
/************** Begin file fts3_expr.c ***************************************/
/*
** 2008 Nov 28
@@ -111954,13 +122001,25 @@
*/
#define SQLITE_FTS3_DEFAULT_NEAR_PARAM 10
+/* #include <string.h> */
+/* #include <assert.h> */
+/*
+** isNot:
+** This variable is used by function getNextNode(). When getNextNode() is
+** called, it sets ParseContext.isNot to true if the 'next node' is a
+** FTSQUERY_PHRASE with a unary "-" attached to it. i.e. "mysql" in the
+** FTS3 query "sqlite -mysql". Otherwise, ParseContext.isNot is set to
+** zero.
+*/
typedef struct ParseContext ParseContext;
struct ParseContext {
sqlite3_tokenizer *pTokenizer; /* Tokenizer module */
const char **azCol; /* Array of column names for fts3 table */
+ int bFts4; /* True to allow FTS4-only syntax */
int nCol; /* Number of entries in azCol[] */
int iDefaultCol; /* Default column to query */
+ int isNot; /* True if getNextNode() sees a unary - */
sqlite3_context *pCtx; /* Write error message here */
int nNest; /* Number of nested brackets */
};
@@ -112045,9 +122104,21 @@
pRet->pPhrase->aToken[0].isPrefix = 1;
iEnd++;
}
- if( !sqlite3_fts3_enable_parentheses && iStart>0 && z[iStart-1]=='-' ){
- pRet->pPhrase->isNot = 1;
+
+ while( 1 ){
+ if( !sqlite3_fts3_enable_parentheses
+ && iStart>0 && z[iStart-1]=='-'
+ ){
+ pParse->isNot = 1;
+ iStart--;
+ }else if( pParse->bFts4 && iStart>0 && z[iStart-1]=='^' ){
+ pRet->pPhrase->aToken[0].bFirst = 1;
+ iStart--;
+ }else{
+ break;
+ }
}
+
}
nConsumed = iEnd;
}
@@ -112098,36 +122169,56 @@
char *zTemp = 0;
int nTemp = 0;
+ const int nSpace = sizeof(Fts3Expr) + sizeof(Fts3Phrase);
+ int nToken = 0;
+
+ /* The final Fts3Expr data structure, including the Fts3Phrase,
+ ** Fts3PhraseToken structures token buffers are all stored as a single
+ ** allocation so that the expression can be freed with a single call to
+ ** sqlite3_free(). Setting this up requires a two pass approach.
+ **
+ ** The first pass, in the block below, uses a tokenizer cursor to iterate
+ ** through the tokens in the expression. This pass uses fts3ReallocOrFree()
+ ** to assemble data in two dynamic buffers:
+ **
+ ** Buffer p: Points to the Fts3Expr structure, followed by the Fts3Phrase
+ ** structure, followed by the array of Fts3PhraseToken
+ ** structures. This pass only populates the Fts3PhraseToken array.
+ **
+ ** Buffer zTemp: Contains copies of all tokens.
+ **
+ ** The second pass, in the block that begins "if( rc==SQLITE_DONE )" below,
+ ** appends buffer zTemp to buffer p, and fills in the Fts3Expr and Fts3Phrase
+ ** structures.
+ */
rc = pModule->xOpen(pTokenizer, zInput, nInput, &pCursor);
if( rc==SQLITE_OK ){
int ii;
pCursor->pTokenizer = pTokenizer;
for(ii=0; rc==SQLITE_OK; ii++){
- const char *zToken;
- int nToken, iBegin, iEnd, iPos;
- rc = pModule->xNext(pCursor, &zToken, &nToken, &iBegin, &iEnd, &iPos);
+ const char *zByte;
+ int nByte, iBegin, iEnd, iPos;
+ rc = pModule->xNext(pCursor, &zByte, &nByte, &iBegin, &iEnd, &iPos);
if( rc==SQLITE_OK ){
- int nByte = sizeof(Fts3Expr) + sizeof(Fts3Phrase);
- p = fts3ReallocOrFree(p, nByte+ii*sizeof(Fts3PhraseToken));
- zTemp = fts3ReallocOrFree(zTemp, nTemp + nToken);
- if( !p || !zTemp ){
- goto no_mem;
- }
- if( ii==0 ){
- memset(p, 0, nByte);
- p->pPhrase = (Fts3Phrase *)&p[1];
- }
- p->pPhrase = (Fts3Phrase *)&p[1];
- memset(&p->pPhrase->aToken[ii], 0, sizeof(Fts3PhraseToken));
- p->pPhrase->nToken = ii+1;
- p->pPhrase->aToken[ii].n = nToken;
- memcpy(&zTemp[nTemp], zToken, nToken);
- nTemp += nToken;
- if( iEnd<nInput && zInput[iEnd]=='*' ){
- p->pPhrase->aToken[ii].isPrefix = 1;
- }else{
- p->pPhrase->aToken[ii].isPrefix = 0;
- }
+ Fts3PhraseToken *pToken;
+
+ p = fts3ReallocOrFree(p, nSpace + ii*sizeof(Fts3PhraseToken));
+ if( !p ) goto no_mem;
+
+ zTemp = fts3ReallocOrFree(zTemp, nTemp + nByte);
+ if( !zTemp ) goto no_mem;
+
+ assert( nToken==ii );
+ pToken = &((Fts3Phrase *)(&p[1]))->aToken[ii];
+ memset(pToken, 0, sizeof(Fts3PhraseToken));
+
+ memcpy(&zTemp[nTemp], zByte, nByte);
+ nTemp += nByte;
+
+ pToken->n = nByte;
+ pToken->isPrefix = (iEnd<nInput && zInput[iEnd]=='*');
+ pToken->bFirst = (iBegin>0 && zInput[iBegin-1]=='^');
+ nToken = ii+1;
}
}
@@ -112137,28 +122228,28 @@
if( rc==SQLITE_DONE ){
int jj;
- char *zNew = NULL;
- int nNew = 0;
- int nByte = sizeof(Fts3Expr) + sizeof(Fts3Phrase);
- nByte += (p?(p->pPhrase->nToken-1):0) * sizeof(Fts3PhraseToken);
- p = fts3ReallocOrFree(p, nByte + nTemp);
- if( !p ){
- goto no_mem;
- }
- if( zTemp ){
- zNew = &(((char *)p)[nByte]);
- memcpy(zNew, zTemp, nTemp);
- }else{
- memset(p, 0, nByte+nTemp);
- }
- p->pPhrase = (Fts3Phrase *)&p[1];
- for(jj=0; jj<p->pPhrase->nToken; jj++){
- p->pPhrase->aToken[jj].z = &zNew[nNew];
- nNew += p->pPhrase->aToken[jj].n;
- }
- sqlite3_free(zTemp);
+ char *zBuf = 0;
+
+ p = fts3ReallocOrFree(p, nSpace + nToken*sizeof(Fts3PhraseToken) + nTemp);
+ if( !p ) goto no_mem;
+ memset(p, 0, (char *)&(((Fts3Phrase *)&p[1])->aToken[0])-(char *)p);
p->eType = FTSQUERY_PHRASE;
+ p->pPhrase = (Fts3Phrase *)&p[1];
p->pPhrase->iColumn = pParse->iDefaultCol;
+ p->pPhrase->nToken = nToken;
+
+ zBuf = (char *)&p->pPhrase->aToken[nToken];
+ if( zTemp ){
+ memcpy(zBuf, zTemp, nTemp);
+ sqlite3_free(zTemp);
+ }else{
+ assert( nTemp==0 );
+ }
+
+ for(jj=0; jj<p->pPhrase->nToken; jj++){
+ p->pPhrase->aToken[jj].z = zBuf;
+ zBuf += p->pPhrase->aToken[jj].n;
+ }
rc = SQLITE_OK;
}
@@ -112215,6 +122306,8 @@
const char *zInput = z;
int nInput = n;
+ pParse->isNot = 0;
+
/* Skip over any whitespace before checking for a keyword, an open or
** close bracket, or a quoted string.
*/
@@ -112433,7 +122526,7 @@
int isPhrase;
if( !sqlite3_fts3_enable_parentheses
- && p->eType==FTSQUERY_PHRASE && p->pPhrase->isNot
+ && p->eType==FTSQUERY_PHRASE && pParse->isNot
){
/* Create an implicit NOT operator. */
Fts3Expr *pNot = fts3MallocZero(sizeof(Fts3Expr));
@@ -112451,7 +122544,6 @@
p = pPrev;
}else{
int eType = p->eType;
- assert( eType!=FTSQUERY_PHRASE || !p->pPhrase->isNot );
isPhrase = (eType==FTSQUERY_PHRASE || p->pLeft);
/* The isRequirePhrase variable is set to true if a phrase or
@@ -112577,6 +122669,7 @@
SQLITE_PRIVATE int sqlite3Fts3ExprParse(
sqlite3_tokenizer *pTokenizer, /* Tokenizer module */
char **azCol, /* Array of column names for fts3 table */
+ int bFts4, /* True to allow FTS4-only syntax */
int nCol, /* Number of entries in azCol[] */
int iDefaultCol, /* Default column to query */
const char *z, int n, /* Text of MATCH query */
@@ -112590,6 +122683,7 @@
sParse.nCol = nCol;
sParse.iDefaultCol = iDefaultCol;
sParse.nNest = 0;
+ sParse.bFts4 = bFts4;
if( z==0 ){
*ppExpr = 0;
return SQLITE_OK;
@@ -112614,9 +122708,11 @@
*/
SQLITE_PRIVATE void sqlite3Fts3ExprFree(Fts3Expr *p){
if( p ){
+ assert( p->eType==FTSQUERY_PHRASE || p->pPhrase==0 );
sqlite3Fts3ExprFree(p->pLeft);
sqlite3Fts3ExprFree(p->pRight);
- sqlite3_free(p->aDoclist);
+ sqlite3Fts3EvalPhraseCleanup(p->pPhrase);
+ sqlite3_free(p->aMI);
sqlite3_free(p);
}
}
@@ -112628,6 +122724,7 @@
#ifdef SQLITE_TEST
+/* #include <stdio.h> */
/*
** Function to query the hash-table of tokenizers (see README.tokenizers).
@@ -112673,7 +122770,7 @@
Fts3Phrase *pPhrase = pExpr->pPhrase;
int i;
zBuf = sqlite3_mprintf(
- "%zPHRASE %d %d", zBuf, pPhrase->iColumn, pPhrase->isNot);
+ "%zPHRASE %d 0", zBuf, pPhrase->iColumn);
for(i=0; zBuf && i<pPhrase->nToken; i++){
zBuf = sqlite3_mprintf("%z %.*s%s", zBuf,
pPhrase->aToken[i].n, pPhrase->aToken[i].z,
@@ -112776,7 +122873,7 @@
}
rc = sqlite3Fts3ExprParse(
- pTokenizer, azCol, nCol, nCol, zExpr, nExpr, &pExpr
+ pTokenizer, azCol, 0, nCol, nCol, zExpr, nExpr, &pExpr
);
if( rc!=SQLITE_OK && rc!=SQLITE_NOMEM ){
sqlite3_result_error(context, "Error parsing expression", -1);
@@ -112838,6 +122935,9 @@
*/
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
+/* #include <assert.h> */
+/* #include <stdlib.h> */
+/* #include <string.h> */
/*
@@ -113218,7 +123318,10 @@
*/
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
-
+/* #include <assert.h> */
+/* #include <stdlib.h> */
+/* #include <stdio.h> */
+/* #include <string.h> */
/*
@@ -113229,7 +123332,7 @@
} porter_tokenizer;
/*
-** Class derived from sqlit3_tokenizer_cursor
+** Class derived from sqlite3_tokenizer_cursor
*/
typedef struct porter_tokenizer_cursor {
sqlite3_tokenizer_cursor base;
@@ -113862,10 +123965,8 @@
*/
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
-#ifndef SQLITE_CORE
- SQLITE_EXTENSION_INIT1
-#endif
-
+/* #include <assert.h> */
+/* #include <string.h> */
/*
** Implementation of the SQL scalar function for accessing the underlying
@@ -113989,7 +124090,7 @@
){
int rc;
char *z = (char *)zArg;
- int n;
+ int n = 0;
char *zCopy;
char *zEnd; /* Pointer to nul-term of zCopy */
sqlite3_tokenizer_module *m;
@@ -114041,6 +124142,8 @@
#ifdef SQLITE_TEST
+/* #include <tcl.h> */
+/* #include <string.h> */
/*
** Implementation of a special SQL scalar function for testing tokenizers
@@ -114352,7 +124455,10 @@
*/
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
-
+/* #include <assert.h> */
+/* #include <stdlib.h> */
+/* #include <stdio.h> */
+/* #include <string.h> */
typedef struct simple_tokenizer {
@@ -114578,6 +124684,9 @@
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
+/* #include <string.h> */
+/* #include <assert.h> */
+/* #include <stdlib.h> */
/*
** When full-text index nodes are loaded from disk, the buffer that they
@@ -114591,14 +124700,40 @@
*/
#define FTS3_NODE_PADDING (FTS3_VARINT_MAX*2)
+/*
+** Under certain circumstances, b-tree nodes (doclists) can be loaded into
+** memory incrementally instead of all at once. This can be a big performance
+** win (reduced IO and CPU) if SQLite stops calling the virtual table xNext()
+** method before retrieving all query results (as may happen, for example,
+** if a query has a LIMIT clause).
+**
+** Incremental loading is used for b-tree nodes FTS3_NODE_CHUNK_THRESHOLD
+** bytes and larger. Nodes are loaded in chunks of FTS3_NODE_CHUNKSIZE bytes.
+** The code is written so that the hard lower-limit for each of these values
+** is 1. Clearly such small values would be inefficient, but can be useful
+** for testing purposes.
+**
+** If this module is built with SQLITE_TEST defined, these constants may
+** be overridden at runtime for testing purposes. File fts3_test.c contains
+** a Tcl interface to read and write the values.
+*/
+#ifdef SQLITE_TEST
+int test_fts3_node_chunksize = (4*1024);
+int test_fts3_node_chunk_threshold = (4*1024)*4;
+# define FTS3_NODE_CHUNKSIZE test_fts3_node_chunksize
+# define FTS3_NODE_CHUNK_THRESHOLD test_fts3_node_chunk_threshold
+#else
+# define FTS3_NODE_CHUNKSIZE (4*1024)
+# define FTS3_NODE_CHUNK_THRESHOLD (FTS3_NODE_CHUNKSIZE*4)
+#endif
+
typedef struct PendingList PendingList;
typedef struct SegmentNode SegmentNode;
typedef struct SegmentWriter SegmentWriter;
/*
-** Data structure used while accumulating terms in the pending-terms hash
-** table. The hash table entry maps from term (a string) to a malloc'd
-** instance of this structure.
+** An instance of the following data structure is used to build doclists
+** incrementally. See function fts3PendingListAppend() for details.
*/
struct PendingList {
int nData;
@@ -114629,7 +124764,6 @@
**
** sqlite3Fts3SegReaderNew()
** sqlite3Fts3SegReaderFree()
-** sqlite3Fts3SegReaderCost()
** sqlite3Fts3SegReaderIterate()
**
** Methods used to manipulate Fts3SegReader structures:
@@ -114648,6 +124782,9 @@
char *aNode; /* Pointer to node data (or NULL) */
int nNode; /* Size of buffer at aNode (or 0) */
+ int nPopulate; /* If >0, bytes of buffer aNode[] loaded */
+ sqlite3_blob *pBlob; /* If not NULL, blob handle to read node */
+
Fts3HashElem **ppNextElem;
/* Variables set by fts3SegReaderNext(). These may be read directly
@@ -114661,8 +124798,11 @@
char *aDoclist; /* Pointer to doclist of current entry */
int nDoclist; /* Size of doclist in current entry */
- /* The following variables are used to iterate through the current doclist */
+ /* The following variables are used by fts3SegReaderNextDocid() to iterate
+ ** through the current doclist (aDoclist/nDoclist).
+ */
char *pOffsetList;
+ int nOffsetList; /* For descending pending seg-readers only */
sqlite3_int64 iDocid;
};
@@ -114700,6 +124840,14 @@
** fts3NodeAddTerm()
** fts3NodeWrite()
** fts3NodeFree()
+**
+** When a b+tree is written to the database (either as a result of a merge
+** or the pending-terms table being flushed), leaves are written into the
+** database file as soon as they are completely populated. The interior of
+** the tree is assembled in memory and written out only once all leaves have
+** been populated and stored. This is Ok, as the b+-tree fanout is usually
+** very large, meaning that the interior of the tree consumes relatively
+** little memory.
*/
struct SegmentNode {
SegmentNode *pParent; /* Parent node (or NULL for root node) */
@@ -114730,10 +124878,10 @@
#define SQL_NEXT_SEGMENTS_ID 10
#define SQL_INSERT_SEGDIR 11
#define SQL_SELECT_LEVEL 12
-#define SQL_SELECT_ALL_LEVEL 13
+#define SQL_SELECT_LEVEL_RANGE 13
#define SQL_SELECT_LEVEL_COUNT 14
-#define SQL_SELECT_SEGDIR_COUNT_MAX 15
-#define SQL_DELETE_SEGDIR_BY_LEVEL 16
+#define SQL_SELECT_SEGDIR_MAX_LEVEL 15
+#define SQL_DELETE_SEGDIR_LEVEL 16
#define SQL_DELETE_SEGMENTS_RANGE 17
#define SQL_CONTENT_INSERT 18
#define SQL_DELETE_DOCSIZE 19
@@ -114742,6 +124890,11 @@
#define SQL_SELECT_DOCTOTAL 22
#define SQL_REPLACE_DOCTOTAL 23
+#define SQL_SELECT_ALL_PREFIX_LEVEL 24
+#define SQL_DELETE_ALL_TERMS_SEGDIR 25
+
+#define SQL_DELETE_SEGDIR_RANGE 26
+
/*
** This function is used to obtain an SQLite prepared statement handle
** for the statement identified by the second argument. If successful,
@@ -114767,7 +124920,7 @@
/* 4 */ "DELETE FROM %Q.'%q_segdir'",
/* 5 */ "DELETE FROM %Q.'%q_docsize'",
/* 6 */ "DELETE FROM %Q.'%q_stat'",
-/* 7 */ "SELECT * FROM %Q.'%q_content' WHERE rowid=?",
+/* 7 */ "SELECT %s WHERE rowid=?",
/* 8 */ "SELECT (SELECT max(idx) FROM %Q.'%q_segdir' WHERE level = ?) + 1",
/* 9 */ "INSERT INTO %Q.'%q_segments'(blockid, block) VALUES(?, ?)",
/* 10 */ "SELECT coalesce((SELECT max(blockid) FROM %Q.'%q_segments') + 1, 1)",
@@ -114777,19 +124930,25 @@
/* 12 */ "SELECT idx, start_block, leaves_end_block, end_block, root "
"FROM %Q.'%q_segdir' WHERE level = ? ORDER BY idx ASC",
/* 13 */ "SELECT idx, start_block, leaves_end_block, end_block, root "
- "FROM %Q.'%q_segdir' ORDER BY level DESC, idx ASC",
+ "FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ?"
+ "ORDER BY level DESC, idx ASC",
/* 14 */ "SELECT count(*) FROM %Q.'%q_segdir' WHERE level = ?",
-/* 15 */ "SELECT count(*), max(level) FROM %Q.'%q_segdir'",
+/* 15 */ "SELECT max(level) FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ?",
/* 16 */ "DELETE FROM %Q.'%q_segdir' WHERE level = ?",
/* 17 */ "DELETE FROM %Q.'%q_segments' WHERE blockid BETWEEN ? AND ?",
-/* 18 */ "INSERT INTO %Q.'%q_content' VALUES(%z)",
+/* 18 */ "INSERT INTO %Q.'%q_content' VALUES(%s)",
/* 19 */ "DELETE FROM %Q.'%q_docsize' WHERE docid = ?",
/* 20 */ "REPLACE INTO %Q.'%q_docsize' VALUES(?,?)",
/* 21 */ "SELECT size FROM %Q.'%q_docsize' WHERE docid=?",
/* 22 */ "SELECT value FROM %Q.'%q_stat' WHERE id=0",
/* 23 */ "REPLACE INTO %Q.'%q_stat' VALUES(0,?)",
+/* 24 */ "",
+/* 25 */ "",
+
+/* 26 */ "DELETE FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ?",
+
};
int rc = SQLITE_OK;
sqlite3_stmt *pStmt;
@@ -114801,20 +124960,9 @@
if( !pStmt ){
char *zSql;
if( eStmt==SQL_CONTENT_INSERT ){
- int i; /* Iterator variable */
- char *zVarlist; /* The "?, ?, ..." string */
- zVarlist = (char *)sqlite3_malloc(2*p->nColumn+2);
- if( !zVarlist ){
- *pp = 0;
- return SQLITE_NOMEM;
- }
- zVarlist[0] = '?';
- zVarlist[p->nColumn*2+1] = '\0';
- for(i=1; i<=p->nColumn; i++){
- zVarlist[i*2-1] = ',';
- zVarlist[i*2] = '?';
- }
- zSql = sqlite3_mprintf(azSql[eStmt], p->zDb, p->zName, zVarlist);
+ zSql = sqlite3_mprintf(azSql[eStmt], p->zDb, p->zName, p->zWriteExprlist);
+ }else if( eStmt==SQL_SELECT_CONTENT_BY_ROWID ){
+ zSql = sqlite3_mprintf(azSql[eStmt], p->zReadExprlist);
}else{
zSql = sqlite3_mprintf(azSql[eStmt], p->zDb, p->zName);
}
@@ -114855,9 +125003,9 @@
sqlite3_bind_int64(pStmt, 1, iDocid);
}
rc = sqlite3_step(pStmt);
- if( rc!=SQLITE_ROW ){
+ if( rc!=SQLITE_ROW || sqlite3_column_type(pStmt, 0)!=SQLITE_BLOB ){
rc = sqlite3_reset(pStmt);
- if( rc==SQLITE_OK ) rc = SQLITE_CORRUPT;
+ if( rc==SQLITE_OK ) rc = FTS_CORRUPT_VTAB;
pStmt = 0;
}else{
rc = SQLITE_OK;
@@ -114925,17 +125073,24 @@
** not what users expect when they get SQLITE_LOCKED_SHAREDCACHE. It can
** still happen if the user reads data directly from the %_segments or
** %_segdir tables instead of going through FTS3 though.
+**
+** This reasoning does not apply to a content=xxx table.
*/
SQLITE_PRIVATE int sqlite3Fts3ReadLock(Fts3Table *p){
int rc; /* Return code */
sqlite3_stmt *pStmt; /* Statement used to obtain lock */
- rc = fts3SqlStmt(p, SQL_SELECT_CONTENT_BY_ROWID, &pStmt, 0);
- if( rc==SQLITE_OK ){
- sqlite3_bind_null(pStmt, 1);
- sqlite3_step(pStmt);
- rc = sqlite3_reset(pStmt);
+ if( p->zContentTbl==0 ){
+ rc = fts3SqlStmt(p, SQL_SELECT_CONTENT_BY_ROWID, &pStmt, 0);
+ if( rc==SQLITE_OK ){
+ sqlite3_bind_null(pStmt, 1);
+ sqlite3_step(pStmt);
+ rc = sqlite3_reset(pStmt);
+ }
+ }else{
+ rc = SQLITE_OK;
}
+
return rc;
}
@@ -114956,8 +125111,35 @@
** 3: end_block
** 4: root
*/
-SQLITE_PRIVATE int sqlite3Fts3AllSegdirs(Fts3Table *p, sqlite3_stmt **ppStmt){
- return fts3SqlStmt(p, SQL_SELECT_ALL_LEVEL, ppStmt, 0);
+SQLITE_PRIVATE int sqlite3Fts3AllSegdirs(
+ Fts3Table *p, /* FTS3 table */
+ int iIndex, /* Index for p->aIndex[] */
+ int iLevel, /* Level to select */
+ sqlite3_stmt **ppStmt /* OUT: Compiled statement */
+){
+ int rc;
+ sqlite3_stmt *pStmt = 0;
+
+ assert( iLevel==FTS3_SEGCURSOR_ALL || iLevel>=0 );
+ assert( iLevel<FTS3_SEGDIR_MAXLEVEL );
+ assert( iIndex>=0 && iIndex<p->nIndex );
+
+ if( iLevel<0 ){
+ /* "SELECT * FROM %_segdir WHERE level BETWEEN ? AND ? ORDER BY ..." */
+ rc = fts3SqlStmt(p, SQL_SELECT_LEVEL_RANGE, &pStmt, 0);
+ if( rc==SQLITE_OK ){
+ sqlite3_bind_int(pStmt, 1, iIndex*FTS3_SEGDIR_MAXLEVEL);
+ sqlite3_bind_int(pStmt, 2, (iIndex+1)*FTS3_SEGDIR_MAXLEVEL-1);
+ }
+ }else{
+ /* "SELECT * FROM %_segdir WHERE level = ? ORDER BY ..." */
+ rc = fts3SqlStmt(p, SQL_SELECT_LEVEL, &pStmt, 0);
+ if( rc==SQLITE_OK ){
+ sqlite3_bind_int(pStmt, 1, iLevel+iIndex*FTS3_SEGDIR_MAXLEVEL);
+ }
+ }
+ *ppStmt = pStmt;
+ return rc;
}
@@ -115070,6 +125252,47 @@
}
/*
+** Free a PendingList object allocated by fts3PendingListAppend().
+*/
+static void fts3PendingListDelete(PendingList *pList){
+ sqlite3_free(pList);
+}
+
+/*
+** Add an entry to one of the pending-terms hash tables.
+*/
+static int fts3PendingTermsAddOne(
+ Fts3Table *p,
+ int iCol,
+ int iPos,
+ Fts3Hash *pHash, /* Pending terms hash table to add entry to */
+ const char *zToken,
+ int nToken
+){
+ PendingList *pList;
+ int rc = SQLITE_OK;
+
+ pList = (PendingList *)fts3HashFind(pHash, zToken, nToken);
+ if( pList ){
+ p->nPendingData -= (pList->nData + nToken + sizeof(Fts3HashElem));
+ }
+ if( fts3PendingListAppend(&pList, p->iPrevDocid, iCol, iPos, &rc) ){
+ if( pList==fts3HashInsert(pHash, zToken, nToken, pList) ){
+ /* Malloc failed while inserting the new entry. This can only
+ ** happen if there was no previous entry for this token.
+ */
+ assert( 0==fts3HashFind(pHash, zToken, nToken) );
+ sqlite3_free(pList);
+ rc = SQLITE_NOMEM;
+ }
+ }
+ if( rc==SQLITE_OK ){
+ p->nPendingData += (pList->nData + nToken + sizeof(Fts3HashElem));
+ }
+ return rc;
+}
+
+/*
** Tokenize the nul-terminated string zText and add all tokens to the
** pending-terms hash-table. The docid used is that currently stored in
** p->iPrevDocid, and the column is specified by argument iCol.
@@ -115099,6 +125322,14 @@
assert( pTokenizer && pModule );
+ /* If the user has inserted a NULL value, this function may be called with
+ ** zText==0. In this case, add zero token entries to the hash table and
+ ** return early. */
+ if( zText==0 ){
+ *pnWord = 0;
+ return SQLITE_OK;
+ }
+
rc = pModule->xOpen(pTokenizer, zText, -1, &pCsr);
if( rc!=SQLITE_OK ){
return rc;
@@ -115109,8 +125340,7 @@
while( SQLITE_OK==rc
&& SQLITE_OK==(rc = xNext(pCsr, &zToken, &nToken, &iStart, &iEnd, &iPos))
){
- PendingList *pList;
-
+ int i;
if( iPos>=nWord ) nWord = iPos+1;
/* Positions cannot be negative; we use -1 as a terminator internally.
@@ -115121,22 +125351,19 @@
break;
}
- pList = (PendingList *)fts3HashFind(&p->pendingTerms, zToken, nToken);
- if( pList ){
- p->nPendingData -= (pList->nData + nToken + sizeof(Fts3HashElem));
- }
- if( fts3PendingListAppend(&pList, p->iPrevDocid, iCol, iPos, &rc) ){
- if( pList==fts3HashInsert(&p->pendingTerms, zToken, nToken, pList) ){
- /* Malloc failed while inserting the new entry. This can only
- ** happen if there was no previous entry for this token.
- */
- assert( 0==fts3HashFind(&p->pendingTerms, zToken, nToken) );
- sqlite3_free(pList);
- rc = SQLITE_NOMEM;
- }
- }
- if( rc==SQLITE_OK ){
- p->nPendingData += (pList->nData + nToken + sizeof(Fts3HashElem));
+ /* Add the term to the terms index */
+ rc = fts3PendingTermsAddOne(
+ p, iCol, iPos, &p->aIndex[0].hPending, zToken, nToken
+ );
+
+ /* Add the term to each of the prefix indexes that it is not too
+ ** short for. */
+ for(i=1; rc==SQLITE_OK && i<p->nIndex; i++){
+ struct Fts3Index *pIndex = &p->aIndex[i];
+ if( nToken<pIndex->nPrefix ) continue;
+ rc = fts3PendingTermsAddOne(
+ p, iCol, iPos, &pIndex->hPending, zToken, pIndex->nPrefix
+ );
}
}
@@ -115166,14 +125393,19 @@
}
/*
-** Discard the contents of the pending-terms hash table.
+** Discard the contents of the pending-terms hash tables.
*/
SQLITE_PRIVATE void sqlite3Fts3PendingTermsClear(Fts3Table *p){
- Fts3HashElem *pElem;
- for(pElem=fts3HashFirst(&p->pendingTerms); pElem; pElem=fts3HashNext(pElem)){
- sqlite3_free(fts3HashData(pElem));
+ int i;
+ for(i=0; i<p->nIndex; i++){
+ Fts3HashElem *pElem;
+ Fts3Hash *pHash = &p->aIndex[i].hPending;
+ for(pElem=fts3HashFirst(pHash); pElem; pElem=fts3HashNext(pElem)){
+ PendingList *pList = (PendingList *)fts3HashData(pElem);
+ fts3PendingListDelete(pList);
+ }
+ fts3HashClear(pHash);
}
- fts3HashClear(&p->pendingTerms);
p->nPendingData = 0;
}
@@ -115189,11 +125421,9 @@
int i; /* Iterator variable */
for(i=2; i<p->nColumn+2; i++){
const char *zText = (const char *)sqlite3_value_text(apVal[i]);
- if( zText ){
- int rc = fts3PendingTermsAdd(p, zText, i-2, &aSz[i-2]);
- if( rc!=SQLITE_OK ){
- return rc;
- }
+ int rc = fts3PendingTermsAdd(p, zText, i-2, &aSz[i-2]);
+ if( rc!=SQLITE_OK ){
+ return rc;
}
aSz[p->nColumn] += sqlite3_value_bytes(apVal[i]);
}
@@ -115221,6 +125451,18 @@
int rc; /* Return code */
sqlite3_stmt *pContentInsert; /* INSERT INTO %_content VALUES(...) */
+ if( p->zContentTbl ){
+ sqlite3_value *pRowid = apVal[p->nColumn+3];
+ if( sqlite3_value_type(pRowid)==SQLITE_NULL ){
+ pRowid = apVal[1];
+ }
+ if( sqlite3_value_type(pRowid)!=SQLITE_INTEGER ){
+ return SQLITE_CONSTRAINT;
+ }
+ *piDocid = sqlite3_value_int64(pRowid);
+ return SQLITE_OK;
+ }
+
/* Locate the statement handle used to insert data into the %_content
** table. The SQL for this statement is:
**
@@ -115271,14 +125513,16 @@
** Remove all data from the FTS3 table. Clear the hash table containing
** pending terms.
*/
-static int fts3DeleteAll(Fts3Table *p){
+static int fts3DeleteAll(Fts3Table *p, int bContent){
int rc = SQLITE_OK; /* Return code */
/* Discard the contents of the pending-terms hash table. */
sqlite3Fts3PendingTermsClear(p);
- /* Delete everything from the %_content, %_segments and %_segdir tables. */
- fts3SqlExec(&rc, p, SQL_DELETE_ALL_CONTENT, 0);
+ /* Delete everything from the shadow tables. Except, leave %_content as
+ ** is if bContent is false. */
+ assert( p->zContentTbl==0 || bContent==0 );
+ if( bContent ) fts3SqlExec(&rc, p, SQL_DELETE_ALL_CONTENT, 0);
fts3SqlExec(&rc, p, SQL_DELETE_ALL_SEGMENTS, 0);
fts3SqlExec(&rc, p, SQL_DELETE_ALL_SEGDIR, 0);
if( p->bHasDocsize ){
@@ -115298,14 +125542,14 @@
static void fts3DeleteTerms(
int *pRC, /* Result code */
Fts3Table *p, /* The FTS table to delete from */
- sqlite3_value **apVal, /* apVal[] contains the docid to be deleted */
+ sqlite3_value *pRowid, /* The docid to be deleted */
u32 *aSz /* Sizes of deleted document written here */
){
int rc;
sqlite3_stmt *pSelect;
if( *pRC ) return;
- rc = fts3SqlStmt(p, SQL_SELECT_CONTENT_BY_ROWID, &pSelect, apVal);
+ rc = fts3SqlStmt(p, SQL_SELECT_CONTENT_BY_ROWID, &pSelect, &pRowid);
if( rc==SQLITE_OK ){
if( SQLITE_ROW==sqlite3_step(pSelect) ){
int i;
@@ -115331,7 +125575,7 @@
** Forward declaration to account for the circular dependency between
** functions fts3SegmentMerge() and fts3AllocateSegdirIdx().
*/
-static int fts3SegmentMerge(Fts3Table *, int);
+static int fts3SegmentMerge(Fts3Table *, int, int);
/*
** This function allocates a new level iLevel index in the segdir table.
@@ -115348,7 +125592,12 @@
** If successful, *piIdx is set to the allocated index slot and SQLITE_OK
** returned. Otherwise, an SQLite error code is returned.
*/
-static int fts3AllocateSegdirIdx(Fts3Table *p, int iLevel, int *piIdx){
+static int fts3AllocateSegdirIdx(
+ Fts3Table *p,
+ int iIndex, /* Index for p->aIndex */
+ int iLevel,
+ int *piIdx
+){
int rc; /* Return Code */
sqlite3_stmt *pNextIdx; /* Query for next idx at level iLevel */
int iNext = 0; /* Result of query pNextIdx */
@@ -115356,7 +125605,7 @@
/* Set variable iNext to the next available segdir index at level iLevel. */
rc = fts3SqlStmt(p, SQL_NEXT_SEGMENT_INDEX, &pNextIdx, 0);
if( rc==SQLITE_OK ){
- sqlite3_bind_int(pNextIdx, 1, iLevel);
+ sqlite3_bind_int(pNextIdx, 1, iIndex*FTS3_SEGDIR_MAXLEVEL + iLevel);
if( SQLITE_ROW==sqlite3_step(pNextIdx) ){
iNext = sqlite3_column_int(pNextIdx, 0);
}
@@ -115370,7 +125619,7 @@
** if iNext is less than FTS3_MERGE_COUNT, allocate index iNext.
*/
if( iNext>=FTS3_MERGE_COUNT ){
- rc = fts3SegmentMerge(p, iLevel);
+ rc = fts3SegmentMerge(p, iIndex, iLevel);
*piIdx = 0;
}else{
*piIdx = iNext;
@@ -115411,7 +125660,8 @@
Fts3Table *p, /* FTS3 table handle */
sqlite3_int64 iBlockid, /* Access the row with blockid=$iBlockid */
char **paBlob, /* OUT: Blob data in malloc'd buffer */
- int *pnBlob /* OUT: Size of blob data */
+ int *pnBlob, /* OUT: Size of blob data */
+ int *pnLoad /* OUT: Bytes actually loaded */
){
int rc; /* Return code */
@@ -115432,11 +125682,16 @@
if( rc==SQLITE_OK ){
int nByte = sqlite3_blob_bytes(p->pSegments);
+ *pnBlob = nByte;
if( paBlob ){
char *aByte = sqlite3_malloc(nByte + FTS3_NODE_PADDING);
if( !aByte ){
rc = SQLITE_NOMEM;
}else{
+ if( pnLoad && nByte>(FTS3_NODE_CHUNK_THRESHOLD) ){
+ nByte = FTS3_NODE_CHUNKSIZE;
+ *pnLoad = nByte;
+ }
rc = sqlite3_blob_read(p->pSegments, aByte, nByte, 0);
memset(&aByte[nByte], 0, FTS3_NODE_PADDING);
if( rc!=SQLITE_OK ){
@@ -115446,7 +125701,6 @@
}
*paBlob = aByte;
}
- *pnBlob = nByte;
}
return rc;
@@ -115460,13 +125714,55 @@
sqlite3_blob_close(p->pSegments);
p->pSegments = 0;
}
+
+static int fts3SegReaderIncrRead(Fts3SegReader *pReader){
+ int nRead; /* Number of bytes to read */
+ int rc; /* Return code */
+
+ nRead = MIN(pReader->nNode - pReader->nPopulate, FTS3_NODE_CHUNKSIZE);
+ rc = sqlite3_blob_read(
+ pReader->pBlob,
+ &pReader->aNode[pReader->nPopulate],
+ nRead,
+ pReader->nPopulate
+ );
+
+ if( rc==SQLITE_OK ){
+ pReader->nPopulate += nRead;
+ memset(&pReader->aNode[pReader->nPopulate], 0, FTS3_NODE_PADDING);
+ if( pReader->nPopulate==pReader->nNode ){
+ sqlite3_blob_close(pReader->pBlob);
+ pReader->pBlob = 0;
+ pReader->nPopulate = 0;
+ }
+ }
+ return rc;
+}
+
+static int fts3SegReaderRequire(Fts3SegReader *pReader, char *pFrom, int nByte){
+ int rc = SQLITE_OK;
+ assert( !pReader->pBlob
+ || (pFrom>=pReader->aNode && pFrom<&pReader->aNode[pReader->nNode])
+ );
+ while( pReader->pBlob && rc==SQLITE_OK
+ && (pFrom - pReader->aNode + nByte)>pReader->nPopulate
+ ){
+ rc = fts3SegReaderIncrRead(pReader);
+ }
+ return rc;
+}
/*
** Move the iterator passed as the first argument to the next term in the
** segment. If successful, SQLITE_OK is returned. If there is no next term,
** SQLITE_DONE. Otherwise, an SQLite error code.
*/
-static int fts3SegReaderNext(Fts3Table *p, Fts3SegReader *pReader){
+static int fts3SegReaderNext(
+ Fts3Table *p,
+ Fts3SegReader *pReader,
+ int bIncr
+){
+ int rc; /* Return code of various sub-routines */
char *pNext; /* Cursor variable */
int nPrefix; /* Number of bytes in term prefix */
int nSuffix; /* Number of bytes in term suffix */
@@ -115478,7 +125774,6 @@
}
if( !pNext || pNext>=&pReader->aNode[pReader->nNode] ){
- int rc; /* Return code from Fts3ReadBlock() */
if( fts3SegReaderIsPending(pReader) ){
Fts3HashElem *pElem = *(pReader->ppNextElem);
@@ -115498,6 +125793,8 @@
if( !fts3SegReaderIsRootOnly(pReader) ){
sqlite3_free(pReader->aNode);
+ sqlite3_blob_close(pReader->pBlob);
+ pReader->pBlob = 0;
}
pReader->aNode = 0;
@@ -115509,21 +125806,31 @@
}
rc = sqlite3Fts3ReadBlock(
- p, ++pReader->iCurrentBlock, &pReader->aNode, &pReader->nNode
+ p, ++pReader->iCurrentBlock, &pReader->aNode, &pReader->nNode,
+ (bIncr ? &pReader->nPopulate : 0)
);
if( rc!=SQLITE_OK ) return rc;
+ assert( pReader->pBlob==0 );
+ if( bIncr && pReader->nPopulate<pReader->nNode ){
+ pReader->pBlob = p->pSegments;
+ p->pSegments = 0;
+ }
pNext = pReader->aNode;
}
+
+ assert( !fts3SegReaderIsPending(pReader) );
+
+ rc = fts3SegReaderRequire(pReader, pNext, FTS3_VARINT_MAX*2);
+ if( rc!=SQLITE_OK ) return rc;
/* Because of the FTS3_NODE_PADDING bytes of padding, the following is
- ** safe (no risk of overread) even if the node data is corrupted.
- */
+ ** safe (no risk of overread) even if the node data is corrupted. */
pNext += sqlite3Fts3GetVarint32(pNext, &nPrefix);
pNext += sqlite3Fts3GetVarint32(pNext, &nSuffix);
if( nPrefix<0 || nSuffix<=0
|| &pNext[nSuffix]>&pReader->aNode[pReader->nNode]
){
- return SQLITE_CORRUPT;
+ return FTS_CORRUPT_VTAB;
}
if( nPrefix+nSuffix>pReader->nTermAlloc ){
@@ -115535,6 +125842,10 @@
pReader->zTerm = zNew;
pReader->nTermAlloc = nNew;
}
+
+ rc = fts3SegReaderRequire(pReader, pNext, nSuffix+FTS3_VARINT_MAX);
+ if( rc!=SQLITE_OK ) return rc;
+
memcpy(&pReader->zTerm[nPrefix], pNext, nSuffix);
pReader->nTerm = nPrefix+nSuffix;
pNext += nSuffix;
@@ -115547,9 +125858,9 @@
** of these statements is untrue, then the data structure is corrupt.
*/
if( &pReader->aDoclist[pReader->nDoclist]>&pReader->aNode[pReader->nNode]
- || pReader->aDoclist[pReader->nDoclist-1]
+ || (pReader->nPopulate==0 && pReader->aDoclist[pReader->nDoclist-1])
){
- return SQLITE_CORRUPT;
+ return FTS_CORRUPT_VTAB;
}
return SQLITE_OK;
}
@@ -115558,12 +125869,26 @@
** Set the SegReader to point to the first docid in the doclist associated
** with the current term.
*/
-static void fts3SegReaderFirstDocid(Fts3SegReader *pReader){
- int n;
+static int fts3SegReaderFirstDocid(Fts3Table *pTab, Fts3SegReader *pReader){
+ int rc = SQLITE_OK;
assert( pReader->aDoclist );
assert( !pReader->pOffsetList );
- n = sqlite3Fts3GetVarint(pReader->aDoclist, &pReader->iDocid);
- pReader->pOffsetList = &pReader->aDoclist[n];
+ if( pTab->bDescIdx && fts3SegReaderIsPending(pReader) ){
+ u8 bEof = 0;
+ pReader->iDocid = 0;
+ pReader->nOffsetList = 0;
+ sqlite3Fts3DoclistPrev(0,
+ pReader->aDoclist, pReader->nDoclist, &pReader->pOffsetList,
+ &pReader->iDocid, &pReader->nOffsetList, &bEof
+ );
+ }else{
+ rc = fts3SegReaderRequire(pReader, pReader->aDoclist, FTS3_VARINT_MAX);
+ if( rc==SQLITE_OK ){
+ int n = sqlite3Fts3GetVarint(pReader->aDoclist, &pReader->iDocid);
+ pReader->pOffsetList = &pReader->aDoclist[n];
+ }
+ }
+ return rc;
}
/*
@@ -115576,122 +125901,125 @@
** *pnOffsetList is set to the length of the set of column-offset
** lists, not including the nul-terminator byte. For example:
*/
-static void fts3SegReaderNextDocid(
- Fts3SegReader *pReader,
- char **ppOffsetList,
- int *pnOffsetList
+static int fts3SegReaderNextDocid(
+ Fts3Table *pTab,
+ Fts3SegReader *pReader, /* Reader to advance to next docid */
+ char **ppOffsetList, /* OUT: Pointer to current position-list */
+ int *pnOffsetList /* OUT: Length of *ppOffsetList in bytes */
){
+ int rc = SQLITE_OK;
char *p = pReader->pOffsetList;
char c = 0;
- /* Pointer p currently points at the first byte of an offset list. The
- ** following two lines advance it to point one byte past the end of
- ** the same offset list.
- */
- while( *p | c ) c = *p++ & 0x80;
- p++;
+ assert( p );
- /* If required, populate the output variables with a pointer to and the
- ** size of the previous offset-list.
- */
- if( ppOffsetList ){
- *ppOffsetList = pReader->pOffsetList;
- *pnOffsetList = (int)(p - pReader->pOffsetList - 1);
- }
-
- /* If there are no more entries in the doclist, set pOffsetList to
- ** NULL. Otherwise, set Fts3SegReader.iDocid to the next docid and
- ** Fts3SegReader.pOffsetList to point to the next offset list before
- ** returning.
- */
- if( p>=&pReader->aDoclist[pReader->nDoclist] ){
- pReader->pOffsetList = 0;
+ if( pTab->bDescIdx && fts3SegReaderIsPending(pReader) ){
+ /* A pending-terms seg-reader for an FTS4 table that uses order=desc.
+ ** Pending-terms doclists are always built up in ascending order, so
+ ** we have to iterate through them backwards here. */
+ u8 bEof = 0;
+ if( ppOffsetList ){
+ *ppOffsetList = pReader->pOffsetList;
+ *pnOffsetList = pReader->nOffsetList - 1;
+ }
+ sqlite3Fts3DoclistPrev(0,
+ pReader->aDoclist, pReader->nDoclist, &p, &pReader->iDocid,
+ &pReader->nOffsetList, &bEof
+ );
+ if( bEof ){
+ pReader->pOffsetList = 0;
+ }else{
+ pReader->pOffsetList = p;
+ }
}else{
- sqlite3_int64 iDelta;
- pReader->pOffsetList = p + sqlite3Fts3GetVarint(p, &iDelta);
- pReader->iDocid += iDelta;
+ char *pEnd = &pReader->aDoclist[pReader->nDoclist];
+
+ /* Pointer p currently points at the first byte of an offset list. The
+ ** following block advances it to point one byte past the end of
+ ** the same offset list. */
+ while( 1 ){
+
+ /* The following line of code (and the "p++" below the while() loop) is
+ ** normally all that is required to move pointer p to the desired
+ ** position. The exception is if this node is being loaded from disk
+ ** incrementally and pointer "p" now points to the first byte passed
+ ** the populated part of pReader->aNode[].
+ */
+ while( *p | c ) c = *p++ & 0x80;
+ assert( *p==0 );
+
+ if( pReader->pBlob==0 || p<&pReader->aNode[pReader->nPopulate] ) break;
+ rc = fts3SegReaderIncrRead(pReader);
+ if( rc!=SQLITE_OK ) return rc;
+ }
+ p++;
+
+ /* If required, populate the output variables with a pointer to and the
+ ** size of the previous offset-list.
+ */
+ if( ppOffsetList ){
+ *ppOffsetList = pReader->pOffsetList;
+ *pnOffsetList = (int)(p - pReader->pOffsetList - 1);
+ }
+
+ while( p<pEnd && *p==0 ) p++;
+
+ /* If there are no more entries in the doclist, set pOffsetList to
+ ** NULL. Otherwise, set Fts3SegReader.iDocid to the next docid and
+ ** Fts3SegReader.pOffsetList to point to the next offset list before
+ ** returning.
+ */
+ if( p>=pEnd ){
+ pReader->pOffsetList = 0;
+ }else{
+ rc = fts3SegReaderRequire(pReader, p, FTS3_VARINT_MAX);
+ if( rc==SQLITE_OK ){
+ sqlite3_int64 iDelta;
+ pReader->pOffsetList = p + sqlite3Fts3GetVarint(p, &iDelta);
+ if( pTab->bDescIdx ){
+ pReader->iDocid -= iDelta;
+ }else{
+ pReader->iDocid += iDelta;
+ }
+ }
+ }
}
+
+ return SQLITE_OK;
}
-/*
-** This function is called to estimate the amount of data that will be
-** loaded from the disk If SegReaderIterate() is called on this seg-reader,
-** in units of average document size.
-**
-** This can be used as follows: If the caller has a small doclist that
-** contains references to N documents, and is considering merging it with
-** a large doclist (size X "average documents"), it may opt not to load
-** the large doclist if X>N.
-*/
-SQLITE_PRIVATE int sqlite3Fts3SegReaderCost(
- Fts3Cursor *pCsr, /* FTS3 cursor handle */
- Fts3SegReader *pReader, /* Segment-reader handle */
- int *pnCost /* IN/OUT: Number of bytes read */
+
+SQLITE_PRIVATE int sqlite3Fts3MsrOvfl(
+ Fts3Cursor *pCsr,
+ Fts3MultiSegReader *pMsr,
+ int *pnOvfl
){
Fts3Table *p = (Fts3Table*)pCsr->base.pVtab;
- int rc = SQLITE_OK; /* Return code */
- int nCost = 0; /* Cost in bytes to return */
- int pgsz = p->nPgsz; /* Database page size */
+ int nOvfl = 0;
+ int ii;
+ int rc = SQLITE_OK;
+ int pgsz = p->nPgsz;
- /* If this seg-reader is reading the pending-terms table, or if all data
- ** for the segment is stored on the root page of the b-tree, then the cost
- ** is zero. In this case all required data is already in main memory.
- */
- if( p->bHasStat
- && !fts3SegReaderIsPending(pReader)
- && !fts3SegReaderIsRootOnly(pReader)
- ){
- int nBlob = 0;
- sqlite3_int64 iBlock;
+ assert( p->bHasStat );
+ assert( pgsz>0 );
- if( pCsr->nRowAvg==0 ){
- /* The average document size, which is required to calculate the cost
- ** of each doclist, has not yet been determined. Read the required
- ** data from the %_stat table to calculate it.
- **
- ** Entry 0 of the %_stat table is a blob containing (nCol+1) FTS3
- ** varints, where nCol is the number of columns in the FTS3 table.
- ** The first varint is the number of documents currently stored in
- ** the table. The following nCol varints contain the total amount of
- ** data stored in all rows of each column of the table, from left
- ** to right.
- */
- sqlite3_stmt *pStmt;
- rc = fts3SqlStmt(p, SQL_SELECT_DOCTOTAL, &pStmt, 0);
- if( rc ) return rc;
- if( sqlite3_step(pStmt)==SQLITE_ROW ){
- sqlite3_int64 nDoc = 0;
- sqlite3_int64 nByte = 0;
- const char *a = sqlite3_column_blob(pStmt, 0);
- if( a ){
- const char *pEnd = &a[sqlite3_column_bytes(pStmt, 0)];
- a += sqlite3Fts3GetVarint(a, &nDoc);
- while( a<pEnd ){
- a += sqlite3Fts3GetVarint(a, &nByte);
- }
+ for(ii=0; rc==SQLITE_OK && ii<pMsr->nSegment; ii++){
+ Fts3SegReader *pReader = pMsr->apSegment[ii];
+ if( !fts3SegReaderIsPending(pReader)
+ && !fts3SegReaderIsRootOnly(pReader)
+ ){
+ sqlite3_int64 jj;
+ for(jj=pReader->iStartBlock; jj<=pReader->iLeafEndBlock; jj++){
+ int nBlob;
+ rc = sqlite3Fts3ReadBlock(p, jj, 0, &nBlob, 0);
+ if( rc!=SQLITE_OK ) break;
+ if( (nBlob+35)>pgsz ){
+ nOvfl += (nBlob + 34)/pgsz;
}
-
- pCsr->nRowAvg = (int)(((nByte / nDoc) + pgsz - 1) / pgsz);
- }
- rc = sqlite3_reset(pStmt);
- if( rc!=SQLITE_OK || pCsr->nRowAvg==0 ) return rc;
- }
-
- /* Assume that a blob flows over onto overflow pages if it is larger
- ** than (pgsz-35) bytes in size (the file-format documentation
- ** confirms this).
- */
- for(iBlock=pReader->iStartBlock; iBlock<=pReader->iLeafEndBlock; iBlock++){
- rc = sqlite3Fts3ReadBlock(p, iBlock, 0, &nBlob);
- if( rc!=SQLITE_OK ) break;
- if( (nBlob+35)>pgsz ){
- int nOvfl = (nBlob + 34)/pgsz;
- nCost += ((nOvfl + pCsr->nRowAvg - 1)/pCsr->nRowAvg);
}
}
}
-
- *pnCost += nCost;
+ *pnOvfl = nOvfl;
return rc;
}
@@ -115704,6 +126032,7 @@
sqlite3_free(pReader->zTerm);
if( !fts3SegReaderIsRootOnly(pReader) ){
sqlite3_free(pReader->aNode);
+ sqlite3_blob_close(pReader->pBlob);
}
}
sqlite3_free(pReader);
@@ -115721,7 +126050,6 @@
int nRoot, /* Size of buffer containing root node */
Fts3SegReader **ppReader /* OUT: Allocated Fts3SegReader */
){
- int rc = SQLITE_OK; /* Return code */
Fts3SegReader *pReader; /* Newly allocated SegReader object */
int nExtra = 0; /* Bytes to allocate segment root node */
@@ -115749,13 +126077,8 @@
}else{
pReader->iCurrentBlock = iStartLeaf-1;
}
-
- if( rc==SQLITE_OK ){
- *ppReader = pReader;
- }else{
- sqlite3Fts3SegReaderFree(pReader);
- }
- return rc;
+ *ppReader = pReader;
+ return SQLITE_OK;
}
/*
@@ -115780,24 +126103,42 @@
/*
** This function is used to allocate an Fts3SegReader that iterates through
** a subset of the terms stored in the Fts3Table.pendingTerms array.
+**
+** If the isPrefixIter parameter is zero, then the returned SegReader iterates
+** through each term in the pending-terms table. Or, if isPrefixIter is
+** non-zero, it iterates through each term and its prefixes. For example, if
+** the pending terms hash table contains the terms "sqlite", "mysql" and
+** "firebird", then the iterator visits the following 'terms' (in the order
+** shown):
+**
+** f fi fir fire fireb firebi firebir firebird
+** m my mys mysq mysql
+** s sq sql sqli sqlit sqlite
+**
+** Whereas if isPrefixIter is zero, the terms visited are:
+**
+** firebird mysql sqlite
*/
SQLITE_PRIVATE int sqlite3Fts3SegReaderPending(
Fts3Table *p, /* Virtual table handle */
+ int iIndex, /* Index for p->aIndex */
const char *zTerm, /* Term to search for */
int nTerm, /* Size of buffer zTerm */
- int isPrefix, /* True for a term-prefix query */
+ int bPrefix, /* True for a prefix iterator */
Fts3SegReader **ppReader /* OUT: SegReader for pending-terms */
){
Fts3SegReader *pReader = 0; /* Fts3SegReader object to return */
+ Fts3HashElem *pE; /* Iterator variable */
Fts3HashElem **aElem = 0; /* Array of term hash entries to scan */
int nElem = 0; /* Size of array at aElem */
int rc = SQLITE_OK; /* Return Code */
+ Fts3Hash *pHash;
- if( isPrefix ){
+ pHash = &p->aIndex[iIndex].hPending;
+ if( bPrefix ){
int nAlloc = 0; /* Size of allocated array at aElem */
- Fts3HashElem *pE = 0; /* Iterator variable */
- for(pE=fts3HashFirst(&p->pendingTerms); pE; pE=fts3HashNext(pE)){
+ for(pE=fts3HashFirst(pHash); pE; pE=fts3HashNext(pE)){
char *zKey = (char *)fts3HashKey(pE);
int nKey = fts3HashKeysize(pE);
if( nTerm==0 || (nKey>=nTerm && 0==memcmp(zKey, zTerm, nTerm)) ){
@@ -115814,6 +126155,7 @@
}
aElem = aElem2;
}
+
aElem[nElem++] = pE;
}
}
@@ -115827,7 +126169,14 @@
}
}else{
- Fts3HashElem *pE = fts3HashFindElem(&p->pendingTerms, zTerm, nTerm);
+ /* The query is a simple term lookup that matches at most one term in
+ ** the index. All that is required is a straight hash-lookup.
+ **
+ ** Because the stack address of pE may be accessed via the aElem pointer
+ ** below, the "Fts3HashElem *pE" must be declared so that it is valid
+ ** within this entire function, not just this "else{...}" block.
+ */
+ pE = fts3HashFindElem(pHash, zTerm, nTerm);
if( pE ){
aElem = &pE;
nElem = 1;
@@ -115847,49 +126196,13 @@
}
}
- if( isPrefix ){
+ if( bPrefix ){
sqlite3_free(aElem);
}
*ppReader = pReader;
return rc;
}
-
-/*
-** The second argument to this function is expected to be a statement of
-** the form:
-**
-** SELECT
-** idx, -- col 0
-** start_block, -- col 1
-** leaves_end_block, -- col 2
-** end_block, -- col 3
-** root -- col 4
-** FROM %_segdir ...
-**
-** This function allocates and initializes a Fts3SegReader structure to
-** iterate through the terms stored in the segment identified by the
-** current row that pStmt is pointing to.
-**
-** If successful, the Fts3SegReader is left pointing to the first term
-** in the segment and SQLITE_OK is returned. Otherwise, an SQLite error
-** code is returned.
-*/
-static int fts3SegReaderNew(
- sqlite3_stmt *pStmt, /* See above */
- int iAge, /* Segment "age". */
- Fts3SegReader **ppReader /* OUT: Allocated Fts3SegReader */
-){
- return sqlite3Fts3SegReaderNew(iAge,
- sqlite3_column_int64(pStmt, 1),
- sqlite3_column_int64(pStmt, 2),
- sqlite3_column_int64(pStmt, 3),
- sqlite3_column_blob(pStmt, 4),
- sqlite3_column_bytes(pStmt, 4),
- ppReader
- );
-}
-
/*
** Compare the entries pointed to by two Fts3SegReader structures.
** Comparison is as follows:
@@ -115947,6 +126260,18 @@
assert( pLhs->aNode && pRhs->aNode );
return rc;
}
+static int fts3SegReaderDoclistCmpRev(Fts3SegReader *pLhs, Fts3SegReader *pRhs){
+ int rc = (pLhs->pOffsetList==0)-(pRhs->pOffsetList==0);
+ if( rc==0 ){
+ if( pLhs->iDocid==pRhs->iDocid ){
+ rc = pRhs->iIdx - pLhs->iIdx;
+ }else{
+ rc = (pLhs->iDocid < pRhs->iDocid) ? 1 : -1;
+ }
+ }
+ assert( pLhs->aNode && pRhs->aNode );
+ return rc;
+}
/*
** Compare the term that the Fts3SegReader object passed as the first argument
@@ -116475,60 +126800,56 @@
** The first value in the apVal[] array is assumed to contain an integer.
** This function tests if there exist any documents with docid values that
** are different from that integer. i.e. if deleting the document with docid
-** apVal[0] would mean the FTS3 table were empty.
+** pRowid would mean the FTS3 table were empty.
**
** If successful, *pisEmpty is set to true if the table is empty except for
-** document apVal[0], or false otherwise, and SQLITE_OK is returned. If an
+** document pRowid, or false otherwise, and SQLITE_OK is returned. If an
** error occurs, an SQLite error code is returned.
*/
-static int fts3IsEmpty(Fts3Table *p, sqlite3_value **apVal, int *pisEmpty){
+static int fts3IsEmpty(Fts3Table *p, sqlite3_value *pRowid, int *pisEmpty){
sqlite3_stmt *pStmt;
int rc;
- rc = fts3SqlStmt(p, SQL_IS_EMPTY, &pStmt, apVal);
- if( rc==SQLITE_OK ){
- if( SQLITE_ROW==sqlite3_step(pStmt) ){
- *pisEmpty = sqlite3_column_int(pStmt, 0);
+ if( p->zContentTbl ){
+ /* If using the content=xxx option, assume the table is never empty */
+ *pisEmpty = 0;
+ rc = SQLITE_OK;
+ }else{
+ rc = fts3SqlStmt(p, SQL_IS_EMPTY, &pStmt, &pRowid);
+ if( rc==SQLITE_OK ){
+ if( SQLITE_ROW==sqlite3_step(pStmt) ){
+ *pisEmpty = sqlite3_column_int(pStmt, 0);
+ }
+ rc = sqlite3_reset(pStmt);
}
- rc = sqlite3_reset(pStmt);
}
return rc;
}
/*
-** Set *pnSegment to the number of segments of level iLevel in the database.
+** Set *pnMax to the largest segment level in the database for the index
+** iIndex.
+**
+** Segment levels are stored in the 'level' column of the %_segdir table.
**
** Return SQLITE_OK if successful, or an SQLite error code if not.
*/
-static int fts3SegmentCount(Fts3Table *p, int iLevel, int *pnSegment){
+static int fts3SegmentMaxLevel(Fts3Table *p, int iIndex, int *pnMax){
sqlite3_stmt *pStmt;
int rc;
+ assert( iIndex>=0 && iIndex<p->nIndex );
- assert( iLevel>=0 );
- rc = fts3SqlStmt(p, SQL_SELECT_LEVEL_COUNT, &pStmt, 0);
+ /* Set pStmt to the compiled version of:
+ **
+ ** SELECT max(level) FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ?
+ **
+ ** (1024 is actually the value of macro FTS3_SEGDIR_PREFIXLEVEL_STR).
+ */
+ rc = fts3SqlStmt(p, SQL_SELECT_SEGDIR_MAX_LEVEL, &pStmt, 0);
if( rc!=SQLITE_OK ) return rc;
- sqlite3_bind_int(pStmt, 1, iLevel);
+ sqlite3_bind_int(pStmt, 1, iIndex*FTS3_SEGDIR_MAXLEVEL);
+ sqlite3_bind_int(pStmt, 2, (iIndex+1)*FTS3_SEGDIR_MAXLEVEL - 1);
if( SQLITE_ROW==sqlite3_step(pStmt) ){
- *pnSegment = sqlite3_column_int(pStmt, 0);
- }
- return sqlite3_reset(pStmt);
-}
-
-/*
-** Set *pnSegment to the total number of segments in the database. Set
-** *pnMax to the largest segment level in the database (segment levels
-** are stored in the 'level' column of the %_segdir table).
-**
-** Return SQLITE_OK if successful, or an SQLite error code if not.
-*/
-static int fts3SegmentCountMax(Fts3Table *p, int *pnSegment, int *pnMax){
- sqlite3_stmt *pStmt;
- int rc;
-
- rc = fts3SqlStmt(p, SQL_SELECT_SEGDIR_COUNT_MAX, &pStmt, 0);
- if( rc!=SQLITE_OK ) return rc;
- if( SQLITE_ROW==sqlite3_step(pStmt) ){
- *pnSegment = sqlite3_column_int(pStmt, 0);
- *pnMax = sqlite3_column_int(pStmt, 1);
+ *pnMax = sqlite3_column_int(pStmt, 0);
}
return sqlite3_reset(pStmt);
}
@@ -116549,6 +126870,7 @@
*/
static int fts3DeleteSegdir(
Fts3Table *p, /* Virtual table handle */
+ int iIndex, /* Index for p->aIndex */
int iLevel, /* Level of %_segdir entries to delete */
Fts3SegReader **apSegment, /* Array of SegReader objects */
int nReader /* Size of array apSegment */
@@ -116571,15 +126893,23 @@
return rc;
}
- if( iLevel>=0 ){
- rc = fts3SqlStmt(p, SQL_DELETE_SEGDIR_BY_LEVEL, &pDelete, 0);
+ assert( iLevel>=0 || iLevel==FTS3_SEGCURSOR_ALL );
+ if( iLevel==FTS3_SEGCURSOR_ALL ){
+ rc = fts3SqlStmt(p, SQL_DELETE_SEGDIR_RANGE, &pDelete, 0);
if( rc==SQLITE_OK ){
- sqlite3_bind_int(pDelete, 1, iLevel);
- sqlite3_step(pDelete);
- rc = sqlite3_reset(pDelete);
+ sqlite3_bind_int(pDelete, 1, iIndex*FTS3_SEGDIR_MAXLEVEL);
+ sqlite3_bind_int(pDelete, 2, (iIndex+1) * FTS3_SEGDIR_MAXLEVEL - 1);
}
}else{
- fts3SqlExec(&rc, p, SQL_DELETE_ALL_SEGDIR, 0);
+ rc = fts3SqlStmt(p, SQL_DELETE_SEGDIR_LEVEL, &pDelete, 0);
+ if( rc==SQLITE_OK ){
+ sqlite3_bind_int(pDelete, 1, iIndex*FTS3_SEGDIR_MAXLEVEL + iLevel);
+ }
+ }
+
+ if( rc==SQLITE_OK ){
+ sqlite3_step(pDelete);
+ rc = sqlite3_reset(pDelete);
}
return rc;
@@ -116629,84 +126959,105 @@
}
/*
-** sqlite3Fts3SegReaderIterate() callback used when merging multiple
-** segments to create a single, larger segment.
+** Cache data in the Fts3MultiSegReader.aBuffer[] buffer (overwriting any
+** existing data). Grow the buffer if required.
+**
+** If successful, return SQLITE_OK. Otherwise, if an OOM error is encountered
+** trying to resize the buffer, return SQLITE_NOMEM.
*/
-static int fts3MergeCallback(
- Fts3Table *p, /* FTS3 Virtual table handle */
- void *pContext, /* Pointer to SegmentWriter* to write with */
- char *zTerm, /* Term to write to the db */
- int nTerm, /* Number of bytes in zTerm */
- char *aDoclist, /* Doclist associated with zTerm */
- int nDoclist /* Number of bytes in doclist */
+static int fts3MsrBufferData(
+ Fts3MultiSegReader *pMsr, /* Multi-segment-reader handle */
+ char *pList,
+ int nList
){
- SegmentWriter **ppW = (SegmentWriter **)pContext;
- return fts3SegWriterAdd(p, ppW, 1, zTerm, nTerm, aDoclist, nDoclist);
+ if( nList>pMsr->nBuffer ){
+ char *pNew;
+ pMsr->nBuffer = nList*2;
+ pNew = (char *)sqlite3_realloc(pMsr->aBuffer, pMsr->nBuffer);
+ if( !pNew ) return SQLITE_NOMEM;
+ pMsr->aBuffer = pNew;
+ }
+
+ memcpy(pMsr->aBuffer, pList, nList);
+ return SQLITE_OK;
}
-/*
-** sqlite3Fts3SegReaderIterate() callback used when flushing the contents
-** of the pending-terms hash table to the database.
-*/
-static int fts3FlushCallback(
- Fts3Table *p, /* FTS3 Virtual table handle */
- void *pContext, /* Pointer to SegmentWriter* to write with */
- char *zTerm, /* Term to write to the db */
- int nTerm, /* Number of bytes in zTerm */
- char *aDoclist, /* Doclist associated with zTerm */
- int nDoclist /* Number of bytes in doclist */
-){
- SegmentWriter **ppW = (SegmentWriter **)pContext;
- return fts3SegWriterAdd(p, ppW, 0, zTerm, nTerm, aDoclist, nDoclist);
-}
-
-/*
-** This function is used to iterate through a contiguous set of terms
-** stored in the full-text index. It merges data contained in one or
-** more segments to support this.
-**
-** The second argument is passed an array of pointers to SegReader objects
-** allocated with sqlite3Fts3SegReaderNew(). This function merges the range
-** of terms selected by each SegReader. If a single term is present in
-** more than one segment, the associated doclists are merged. For each
-** term and (possibly merged) doclist in the merged range, the callback
-** function xFunc is invoked with its arguments set as follows.
-**
-** arg 0: Copy of 'p' parameter passed to this function
-** arg 1: Copy of 'pContext' parameter passed to this function
-** arg 2: Pointer to buffer containing term
-** arg 3: Size of arg 2 buffer in bytes
-** arg 4: Pointer to buffer containing doclist
-** arg 5: Size of arg 2 buffer in bytes
-**
-** The 4th argument to this function is a pointer to a structure of type
-** Fts3SegFilter, defined in fts3Int.h. The contents of this structure
-** further restrict the range of terms that callbacks are made for and
-** modify the behaviour of this function. See comments above structure
-** definition for details.
-*/
-SQLITE_PRIVATE int sqlite3Fts3SegReaderIterate(
+SQLITE_PRIVATE int sqlite3Fts3MsrIncrNext(
Fts3Table *p, /* Virtual table handle */
- Fts3SegReader **apSegment, /* Array of Fts3SegReader objects */
- int nSegment, /* Size of apSegment array */
- Fts3SegFilter *pFilter, /* Restrictions on range of iteration */
- int (*xFunc)(Fts3Table *, void *, char *, int, char *, int), /* Callback */
- void *pContext /* Callback context (2nd argument) */
+ Fts3MultiSegReader *pMsr, /* Multi-segment-reader handle */
+ sqlite3_int64 *piDocid, /* OUT: Docid value */
+ char **paPoslist, /* OUT: Pointer to position list */
+ int *pnPoslist /* OUT: Size of position list in bytes */
){
- int i; /* Iterator variable */
- char *aBuffer = 0; /* Buffer to merge doclists in */
- int nAlloc = 0; /* Allocated size of aBuffer buffer */
- int rc = SQLITE_OK; /* Return code */
+ int nMerge = pMsr->nAdvance;
+ Fts3SegReader **apSegment = pMsr->apSegment;
+ int (*xCmp)(Fts3SegReader *, Fts3SegReader *) = (
+ p->bDescIdx ? fts3SegReaderDoclistCmpRev : fts3SegReaderDoclistCmp
+ );
- int isIgnoreEmpty = (pFilter->flags & FTS3_SEGMENT_IGNORE_EMPTY);
- int isRequirePos = (pFilter->flags & FTS3_SEGMENT_REQUIRE_POS);
- int isColFilter = (pFilter->flags & FTS3_SEGMENT_COLUMN_FILTER);
- int isPrefix = (pFilter->flags & FTS3_SEGMENT_PREFIX);
+ if( nMerge==0 ){
+ *paPoslist = 0;
+ return SQLITE_OK;
+ }
- /* If there are zero segments, this function is a no-op. This scenario
- ** comes about only when reading from an empty database.
- */
- if( nSegment==0 ) goto finished;
+ while( 1 ){
+ Fts3SegReader *pSeg;
+ pSeg = pMsr->apSegment[0];
+
+ if( pSeg->pOffsetList==0 ){
+ *paPoslist = 0;
+ break;
+ }else{
+ int rc;
+ char *pList;
+ int nList;
+ int j;
+ sqlite3_int64 iDocid = apSegment[0]->iDocid;
+
+ rc = fts3SegReaderNextDocid(p, apSegment[0], &pList, &nList);
+ j = 1;
+ while( rc==SQLITE_OK
+ && j<nMerge
+ && apSegment[j]->pOffsetList
+ && apSegment[j]->iDocid==iDocid
+ ){
+ rc = fts3SegReaderNextDocid(p, apSegment[j], 0, 0);
+ j++;
+ }
+ if( rc!=SQLITE_OK ) return rc;
+ fts3SegReaderSort(pMsr->apSegment, nMerge, j, xCmp);
+
+ if( pMsr->iColFilter>=0 ){
+ fts3ColumnFilter(pMsr->iColFilter, &pList, &nList);
+ }
+
+ if( nList>0 ){
+ if( fts3SegReaderIsPending(apSegment[0]) ){
+ rc = fts3MsrBufferData(pMsr, pList, nList+1);
+ if( rc!=SQLITE_OK ) return rc;
+ *paPoslist = pMsr->aBuffer;
+ assert( (pMsr->aBuffer[nList] & 0xFE)==0x00 );
+ }else{
+ *paPoslist = pList;
+ }
+ *piDocid = iDocid;
+ *pnPoslist = nList;
+ break;
+ }
+ }
+ }
+
+ return SQLITE_OK;
+}
+
+static int fts3SegReaderStart(
+ Fts3Table *p, /* Virtual table handle */
+ Fts3MultiSegReader *pCsr, /* Cursor object */
+ const char *zTerm, /* Term searched for (or NULL) */
+ int nTerm /* Length of zTerm in bytes */
+){
+ int i;
+ int nSeg = pCsr->nSegment;
/* If the Fts3SegFilter defines a specific term (or term prefix) to search
** for, then advance each segment iterator until it points to a term of
@@ -116714,21 +127065,144 @@
** unnecessary merge/sort operations for the case where single segment
** b-tree leaf nodes contain more than one term.
*/
- for(i=0; i<nSegment; i++){
- int nTerm = pFilter->nTerm;
- const char *zTerm = pFilter->zTerm;
- Fts3SegReader *pSeg = apSegment[i];
+ for(i=0; pCsr->bRestart==0 && i<pCsr->nSegment; i++){
+ Fts3SegReader *pSeg = pCsr->apSegment[i];
do {
- rc = fts3SegReaderNext(p, pSeg);
- if( rc!=SQLITE_OK ) goto finished;
+ int rc = fts3SegReaderNext(p, pSeg, 0);
+ if( rc!=SQLITE_OK ) return rc;
}while( zTerm && fts3SegReaderTermCmp(pSeg, zTerm, nTerm)<0 );
}
+ fts3SegReaderSort(pCsr->apSegment, nSeg, nSeg, fts3SegReaderCmp);
- fts3SegReaderSort(apSegment, nSegment, nSegment, fts3SegReaderCmp);
- while( apSegment[0]->aNode ){
- int nTerm = apSegment[0]->nTerm;
- char *zTerm = apSegment[0]->zTerm;
- int nMerge = 1;
+ return SQLITE_OK;
+}
+
+SQLITE_PRIVATE int sqlite3Fts3SegReaderStart(
+ Fts3Table *p, /* Virtual table handle */
+ Fts3MultiSegReader *pCsr, /* Cursor object */
+ Fts3SegFilter *pFilter /* Restrictions on range of iteration */
+){
+ pCsr->pFilter = pFilter;
+ return fts3SegReaderStart(p, pCsr, pFilter->zTerm, pFilter->nTerm);
+}
+
+SQLITE_PRIVATE int sqlite3Fts3MsrIncrStart(
+ Fts3Table *p, /* Virtual table handle */
+ Fts3MultiSegReader *pCsr, /* Cursor object */
+ int iCol, /* Column to match on. */
+ const char *zTerm, /* Term to iterate through a doclist for */
+ int nTerm /* Number of bytes in zTerm */
+){
+ int i;
+ int rc;
+ int nSegment = pCsr->nSegment;
+ int (*xCmp)(Fts3SegReader *, Fts3SegReader *) = (
+ p->bDescIdx ? fts3SegReaderDoclistCmpRev : fts3SegReaderDoclistCmp
+ );
+
+ assert( pCsr->pFilter==0 );
+ assert( zTerm && nTerm>0 );
+
+ /* Advance each segment iterator until it points to the term zTerm/nTerm. */
+ rc = fts3SegReaderStart(p, pCsr, zTerm, nTerm);
+ if( rc!=SQLITE_OK ) return rc;
+
+ /* Determine how many of the segments actually point to zTerm/nTerm. */
+ for(i=0; i<nSegment; i++){
+ Fts3SegReader *pSeg = pCsr->apSegment[i];
+ if( !pSeg->aNode || fts3SegReaderTermCmp(pSeg, zTerm, nTerm) ){
+ break;
+ }
+ }
+ pCsr->nAdvance = i;
+
+ /* Advance each of the segments to point to the first docid. */
+ for(i=0; i<pCsr->nAdvance; i++){
+ rc = fts3SegReaderFirstDocid(p, pCsr->apSegment[i]);
+ if( rc!=SQLITE_OK ) return rc;
+ }
+ fts3SegReaderSort(pCsr->apSegment, i, i, xCmp);
+
+ assert( iCol<0 || iCol<p->nColumn );
+ pCsr->iColFilter = iCol;
+
+ return SQLITE_OK;
+}
+
+/*
+** This function is called on a MultiSegReader that has been started using
+** sqlite3Fts3MsrIncrStart(). One or more calls to MsrIncrNext() may also
+** have been made. Calling this function puts the MultiSegReader in such
+** a state that if the next two calls are:
+**
+** sqlite3Fts3SegReaderStart()
+** sqlite3Fts3SegReaderStep()
+**
+** then the entire doclist for the term is available in
+** MultiSegReader.aDoclist/nDoclist.
+*/
+SQLITE_PRIVATE int sqlite3Fts3MsrIncrRestart(Fts3MultiSegReader *pCsr){
+ int i; /* Used to iterate through segment-readers */
+
+ assert( pCsr->zTerm==0 );
+ assert( pCsr->nTerm==0 );
+ assert( pCsr->aDoclist==0 );
+ assert( pCsr->nDoclist==0 );
+
+ pCsr->nAdvance = 0;
+ pCsr->bRestart = 1;
+ for(i=0; i<pCsr->nSegment; i++){
+ pCsr->apSegment[i]->pOffsetList = 0;
+ pCsr->apSegment[i]->nOffsetList = 0;
+ pCsr->apSegment[i]->iDocid = 0;
+ }
+
+ return SQLITE_OK;
+}
+
+
+SQLITE_PRIVATE int sqlite3Fts3SegReaderStep(
+ Fts3Table *p, /* Virtual table handle */
+ Fts3MultiSegReader *pCsr /* Cursor object */
+){
+ int rc = SQLITE_OK;
+
+ int isIgnoreEmpty = (pCsr->pFilter->flags & FTS3_SEGMENT_IGNORE_EMPTY);
+ int isRequirePos = (pCsr->pFilter->flags & FTS3_SEGMENT_REQUIRE_POS);
+ int isColFilter = (pCsr->pFilter->flags & FTS3_SEGMENT_COLUMN_FILTER);
+ int isPrefix = (pCsr->pFilter->flags & FTS3_SEGMENT_PREFIX);
+ int isScan = (pCsr->pFilter->flags & FTS3_SEGMENT_SCAN);
+ int isFirst = (pCsr->pFilter->flags & FTS3_SEGMENT_FIRST);
+
+ Fts3SegReader **apSegment = pCsr->apSegment;
+ int nSegment = pCsr->nSegment;
+ Fts3SegFilter *pFilter = pCsr->pFilter;
+ int (*xCmp)(Fts3SegReader *, Fts3SegReader *) = (
+ p->bDescIdx ? fts3SegReaderDoclistCmpRev : fts3SegReaderDoclistCmp
+ );
+
+ if( pCsr->nSegment==0 ) return SQLITE_OK;
+
+ do {
+ int nMerge;
+ int i;
+
+ /* Advance the first pCsr->nAdvance entries in the apSegment[] array
+ ** forward. Then sort the list in order of current term again.
+ */
+ for(i=0; i<pCsr->nAdvance; i++){
+ rc = fts3SegReaderNext(p, apSegment[i], 0);
+ if( rc!=SQLITE_OK ) return rc;
+ }
+ fts3SegReaderSort(apSegment, nSegment, pCsr->nAdvance, fts3SegReaderCmp);
+ pCsr->nAdvance = 0;
+
+ /* If all the seg-readers are at EOF, we're finished. return SQLITE_OK. */
+ assert( rc==SQLITE_OK );
+ if( apSegment[0]->aNode==0 ) break;
+
+ pCsr->nTerm = apSegment[0]->nTerm;
+ pCsr->zTerm = apSegment[0]->zTerm;
/* If this is a prefix-search, and if the term that apSegment[0] points
** to does not share a suffix with pFilter->zTerm/nTerm, then all
@@ -116737,53 +127211,63 @@
** Similarly, if this is a search for an exact match, and the first term
** of segment apSegment[0] is not a match, exit early.
*/
- if( pFilter->zTerm ){
- if( nTerm<pFilter->nTerm
- || (!isPrefix && nTerm>pFilter->nTerm)
- || memcmp(zTerm, pFilter->zTerm, pFilter->nTerm)
- ){
- goto finished;
+ if( pFilter->zTerm && !isScan ){
+ if( pCsr->nTerm<pFilter->nTerm
+ || (!isPrefix && pCsr->nTerm>pFilter->nTerm)
+ || memcmp(pCsr->zTerm, pFilter->zTerm, pFilter->nTerm)
+ ){
+ break;
}
}
+ nMerge = 1;
while( nMerge<nSegment
&& apSegment[nMerge]->aNode
- && apSegment[nMerge]->nTerm==nTerm
- && 0==memcmp(zTerm, apSegment[nMerge]->zTerm, nTerm)
+ && apSegment[nMerge]->nTerm==pCsr->nTerm
+ && 0==memcmp(pCsr->zTerm, apSegment[nMerge]->zTerm, pCsr->nTerm)
){
nMerge++;
}
assert( isIgnoreEmpty || (isRequirePos && !isColFilter) );
- if( nMerge==1 && !isIgnoreEmpty ){
- Fts3SegReader *p0 = apSegment[0];
- rc = xFunc(p, pContext, zTerm, nTerm, p0->aDoclist, p0->nDoclist);
- if( rc!=SQLITE_OK ) goto finished;
+ if( nMerge==1
+ && !isIgnoreEmpty
+ && !isFirst
+ && (p->bDescIdx==0 || fts3SegReaderIsPending(apSegment[0])==0)
+ ){
+ pCsr->nDoclist = apSegment[0]->nDoclist;
+ if( fts3SegReaderIsPending(apSegment[0]) ){
+ rc = fts3MsrBufferData(pCsr, apSegment[0]->aDoclist, pCsr->nDoclist);
+ pCsr->aDoclist = pCsr->aBuffer;
+ }else{
+ pCsr->aDoclist = apSegment[0]->aDoclist;
+ }
+ if( rc==SQLITE_OK ) rc = SQLITE_ROW;
}else{
int nDoclist = 0; /* Size of doclist */
sqlite3_int64 iPrev = 0; /* Previous docid stored in doclist */
/* The current term of the first nMerge entries in the array
** of Fts3SegReader objects is the same. The doclists must be merged
- ** and a single term added to the new segment.
+ ** and a single term returned with the merged doclist.
*/
for(i=0; i<nMerge; i++){
- fts3SegReaderFirstDocid(apSegment[i]);
+ fts3SegReaderFirstDocid(p, apSegment[i]);
}
- fts3SegReaderSort(apSegment, nMerge, nMerge, fts3SegReaderDoclistCmp);
+ fts3SegReaderSort(apSegment, nMerge, nMerge, xCmp);
while( apSegment[0]->pOffsetList ){
int j; /* Number of segments that share a docid */
char *pList;
int nList;
int nByte;
sqlite3_int64 iDocid = apSegment[0]->iDocid;
- fts3SegReaderNextDocid(apSegment[0], &pList, &nList);
+ fts3SegReaderNextDocid(p, apSegment[0], &pList, &nList);
j = 1;
while( j<nMerge
&& apSegment[j]->pOffsetList
&& apSegment[j]->iDocid==iDocid
){
- fts3SegReaderNextDocid(apSegment[j], 0, 0);
+ fts3SegReaderNextDocid(p, apSegment[j], 0, 0);
j++;
}
@@ -116792,55 +127276,81 @@
}
if( !isIgnoreEmpty || nList>0 ){
- nByte = sqlite3Fts3VarintLen(iDocid-iPrev) + (isRequirePos?nList+1:0);
- if( nDoclist+nByte>nAlloc ){
- char *aNew;
- nAlloc = nDoclist+nByte*2;
- aNew = sqlite3_realloc(aBuffer, nAlloc);
- if( !aNew ){
- rc = SQLITE_NOMEM;
- goto finished;
- }
- aBuffer = aNew;
+
+ /* Calculate the 'docid' delta value to write into the merged
+ ** doclist. */
+ sqlite3_int64 iDelta;
+ if( p->bDescIdx && nDoclist>0 ){
+ iDelta = iPrev - iDocid;
+ }else{
+ iDelta = iDocid - iPrev;
}
- nDoclist += sqlite3Fts3PutVarint(&aBuffer[nDoclist], iDocid-iPrev);
- iPrev = iDocid;
- if( isRequirePos ){
- memcpy(&aBuffer[nDoclist], pList, nList);
- nDoclist += nList;
- aBuffer[nDoclist++] = '\0';
+ assert( iDelta>0 || (nDoclist==0 && iDelta==iDocid) );
+ assert( nDoclist>0 || iDelta==iDocid );
+
+ nByte = sqlite3Fts3VarintLen(iDelta) + (isRequirePos?nList+1:0);
+ if( nDoclist+nByte>pCsr->nBuffer ){
+ char *aNew;
+ pCsr->nBuffer = (nDoclist+nByte)*2;
+ aNew = sqlite3_realloc(pCsr->aBuffer, pCsr->nBuffer);
+ if( !aNew ){
+ return SQLITE_NOMEM;
+ }
+ pCsr->aBuffer = aNew;
+ }
+
+ if( isFirst ){
+ char *a = &pCsr->aBuffer[nDoclist];
+ int nWrite;
+
+ nWrite = sqlite3Fts3FirstFilter(iDelta, pList, nList, a);
+ if( nWrite ){
+ iPrev = iDocid;
+ nDoclist += nWrite;
+ }
+ }else{
+ nDoclist += sqlite3Fts3PutVarint(&pCsr->aBuffer[nDoclist], iDelta);
+ iPrev = iDocid;
+ if( isRequirePos ){
+ memcpy(&pCsr->aBuffer[nDoclist], pList, nList);
+ nDoclist += nList;
+ pCsr->aBuffer[nDoclist++] = '\0';
+ }
}
}
- fts3SegReaderSort(apSegment, nMerge, j, fts3SegReaderDoclistCmp);
+ fts3SegReaderSort(apSegment, nMerge, j, xCmp);
}
-
if( nDoclist>0 ){
- rc = xFunc(p, pContext, zTerm, nTerm, aBuffer, nDoclist);
- if( rc!=SQLITE_OK ) goto finished;
+ pCsr->aDoclist = pCsr->aBuffer;
+ pCsr->nDoclist = nDoclist;
+ rc = SQLITE_ROW;
}
}
+ pCsr->nAdvance = nMerge;
+ }while( rc==SQLITE_OK );
- /* If there is a term specified to filter on, and this is not a prefix
- ** search, return now. The callback that corresponds to the required
- ** term (if such a term exists in the index) has already been made.
- */
- if( pFilter->zTerm && !isPrefix ){
- goto finished;
- }
-
- for(i=0; i<nMerge; i++){
- rc = fts3SegReaderNext(p, apSegment[i]);
- if( rc!=SQLITE_OK ) goto finished;
- }
- fts3SegReaderSort(apSegment, nSegment, nMerge, fts3SegReaderCmp);
- }
-
- finished:
- sqlite3_free(aBuffer);
return rc;
}
+
+SQLITE_PRIVATE void sqlite3Fts3SegReaderFinish(
+ Fts3MultiSegReader *pCsr /* Cursor object */
+){
+ if( pCsr ){
+ int i;
+ for(i=0; i<pCsr->nSegment; i++){
+ sqlite3Fts3SegReaderFree(pCsr->apSegment[i]);
+ }
+ sqlite3_free(pCsr->apSegment);
+ sqlite3_free(pCsr->aBuffer);
+
+ pCsr->nSegment = 0;
+ pCsr->apSegment = 0;
+ pCsr->aBuffer = 0;
+ }
+}
+
/*
** Merge all level iLevel segments in the database into a single
** iLevel+1 segment. Or, if iLevel<0, merge all segments into a
@@ -116852,157 +127362,91 @@
** Otherwise, if successful, SQLITE_OK is returned. If an error occurs,
** an SQLite error code is returned.
*/
-static int fts3SegmentMerge(Fts3Table *p, int iLevel){
- int i; /* Iterator variable */
+static int fts3SegmentMerge(Fts3Table *p, int iIndex, int iLevel){
int rc; /* Return code */
- int iIdx; /* Index of new segment */
- int iNewLevel = 0; /* Level to create new segment at */
- sqlite3_stmt *pStmt = 0;
- SegmentWriter *pWriter = 0;
- int nSegment = 0; /* Number of segments being merged */
- Fts3SegReader **apSegment = 0; /* Array of Segment iterators */
- Fts3SegReader *pPending = 0; /* Iterator for pending-terms */
+ int iIdx = 0; /* Index of new segment */
+ int iNewLevel = 0; /* Level/index to create new segment at */
+ SegmentWriter *pWriter = 0; /* Used to write the new, merged, segment */
Fts3SegFilter filter; /* Segment term filter condition */
+ Fts3MultiSegReader csr; /* Cursor to iterate through level(s) */
+ int bIgnoreEmpty = 0; /* True to ignore empty segments */
- if( iLevel<0 ){
+ assert( iLevel==FTS3_SEGCURSOR_ALL
+ || iLevel==FTS3_SEGCURSOR_PENDING
+ || iLevel>=0
+ );
+ assert( iLevel<FTS3_SEGDIR_MAXLEVEL );
+ assert( iIndex>=0 && iIndex<p->nIndex );
+
+ rc = sqlite3Fts3SegReaderCursor(p, iIndex, iLevel, 0, 0, 1, 0, &csr);
+ if( rc!=SQLITE_OK || csr.nSegment==0 ) goto finished;
+
+ if( iLevel==FTS3_SEGCURSOR_ALL ){
/* This call is to merge all segments in the database to a single
** segment. The level of the new segment is equal to the the numerically
- ** greatest segment level currently present in the database. The index
- ** of the new segment is always 0.
- */
- iIdx = 0;
- rc = sqlite3Fts3SegReaderPending(p, 0, 0, 1, &pPending);
- if( rc!=SQLITE_OK ) goto finished;
- rc = fts3SegmentCountMax(p, &nSegment, &iNewLevel);
- if( rc!=SQLITE_OK ) goto finished;
- nSegment += (pPending!=0);
- if( nSegment<=1 ){
- return SQLITE_DONE;
- }
- }else{
- /* This call is to merge all segments at level iLevel. Find the next
- ** available segment index at level iLevel+1. The call to
- ** fts3AllocateSegdirIdx() will merge the segments at level iLevel+1 to
- ** a single iLevel+2 segment if necessary.
- */
- iNewLevel = iLevel+1;
- rc = fts3AllocateSegdirIdx(p, iNewLevel, &iIdx);
- if( rc!=SQLITE_OK ) goto finished;
- rc = fts3SegmentCount(p, iLevel, &nSegment);
- if( rc!=SQLITE_OK ) goto finished;
- }
- assert( nSegment>0 );
- assert( iNewLevel>=0 );
-
- /* Allocate space for an array of pointers to segment iterators. */
- apSegment = (Fts3SegReader**)sqlite3_malloc(sizeof(Fts3SegReader *)*nSegment);
- if( !apSegment ){
- rc = SQLITE_NOMEM;
- goto finished;
- }
- memset(apSegment, 0, sizeof(Fts3SegReader *)*nSegment);
-
- /* Allocate a Fts3SegReader structure for each segment being merged. A
- ** Fts3SegReader stores the state data required to iterate through all
- ** entries on all leaves of a single segment.
- */
- assert( SQL_SELECT_LEVEL+1==SQL_SELECT_ALL_LEVEL);
- rc = fts3SqlStmt(p, SQL_SELECT_LEVEL+(iLevel<0), &pStmt, 0);
- if( rc!=SQLITE_OK ) goto finished;
- sqlite3_bind_int(pStmt, 1, iLevel);
- for(i=0; SQLITE_ROW==(sqlite3_step(pStmt)); i++){
- rc = fts3SegReaderNew(pStmt, i, &apSegment[i]);
- if( rc!=SQLITE_OK ){
+ ** greatest segment level currently present in the database for this
+ ** index. The idx of the new segment is always 0. */
+ if( csr.nSegment==1 ){
+ rc = SQLITE_DONE;
goto finished;
}
+ rc = fts3SegmentMaxLevel(p, iIndex, &iNewLevel);
+ bIgnoreEmpty = 1;
+
+ }else if( iLevel==FTS3_SEGCURSOR_PENDING ){
+ iNewLevel = iIndex * FTS3_SEGDIR_MAXLEVEL;
+ rc = fts3AllocateSegdirIdx(p, iIndex, 0, &iIdx);
+ }else{
+ /* This call is to merge all segments at level iLevel. find the next
+ ** available segment index at level iLevel+1. The call to
+ ** fts3AllocateSegdirIdx() will merge the segments at level iLevel+1 to
+ ** a single iLevel+2 segment if necessary. */
+ rc = fts3AllocateSegdirIdx(p, iIndex, iLevel+1, &iIdx);
+ iNewLevel = iIndex * FTS3_SEGDIR_MAXLEVEL + iLevel+1;
}
- rc = sqlite3_reset(pStmt);
- if( pPending ){
- apSegment[i] = pPending;
- pPending = 0;
- }
- pStmt = 0;
if( rc!=SQLITE_OK ) goto finished;
+ assert( csr.nSegment>0 );
+ assert( iNewLevel>=(iIndex*FTS3_SEGDIR_MAXLEVEL) );
+ assert( iNewLevel<((iIndex+1)*FTS3_SEGDIR_MAXLEVEL) );
memset(&filter, 0, sizeof(Fts3SegFilter));
filter.flags = FTS3_SEGMENT_REQUIRE_POS;
- filter.flags |= (iLevel<0 ? FTS3_SEGMENT_IGNORE_EMPTY : 0);
- rc = sqlite3Fts3SegReaderIterate(p, apSegment, nSegment,
- &filter, fts3MergeCallback, (void *)&pWriter
- );
- if( rc!=SQLITE_OK ) goto finished;
+ filter.flags |= (bIgnoreEmpty ? FTS3_SEGMENT_IGNORE_EMPTY : 0);
- rc = fts3DeleteSegdir(p, iLevel, apSegment, nSegment);
- if( rc==SQLITE_OK ){
- rc = fts3SegWriterFlush(p, pWriter, iNewLevel, iIdx);
+ rc = sqlite3Fts3SegReaderStart(p, &csr, &filter);
+ while( SQLITE_OK==rc ){
+ rc = sqlite3Fts3SegReaderStep(p, &csr);
+ if( rc!=SQLITE_ROW ) break;
+ rc = fts3SegWriterAdd(p, &pWriter, 1,
+ csr.zTerm, csr.nTerm, csr.aDoclist, csr.nDoclist);
}
+ if( rc!=SQLITE_OK ) goto finished;
+ assert( pWriter );
+
+ if( iLevel!=FTS3_SEGCURSOR_PENDING ){
+ rc = fts3DeleteSegdir(p, iIndex, iLevel, csr.apSegment, csr.nSegment);
+ if( rc!=SQLITE_OK ) goto finished;
+ }
+ rc = fts3SegWriterFlush(p, pWriter, iNewLevel, iIdx);
finished:
fts3SegWriterFree(pWriter);
- if( apSegment ){
- for(i=0; i<nSegment; i++){
- sqlite3Fts3SegReaderFree(apSegment[i]);
- }
- sqlite3_free(apSegment);
- }
- sqlite3Fts3SegReaderFree(pPending);
- sqlite3_reset(pStmt);
+ sqlite3Fts3SegReaderFinish(&csr);
return rc;
}
/*
-** Flush the contents of pendingTerms to a level 0 segment.
+** Flush the contents of pendingTerms to level 0 segments.
*/
SQLITE_PRIVATE int sqlite3Fts3PendingTermsFlush(Fts3Table *p){
- int rc; /* Return Code */
- int idx; /* Index of new segment created */
- SegmentWriter *pWriter = 0; /* Used to write the segment */
- Fts3SegReader *pReader = 0; /* Used to iterate through the hash table */
-
- /* Allocate a SegReader object to iterate through the contents of the
- ** pending-terms table. If an error occurs, or if there are no terms
- ** in the pending-terms table, return immediately.
- */
- rc = sqlite3Fts3SegReaderPending(p, 0, 0, 1, &pReader);
- if( rc!=SQLITE_OK || pReader==0 ){
- return rc;
+ int rc = SQLITE_OK;
+ int i;
+ for(i=0; rc==SQLITE_OK && i<p->nIndex; i++){
+ rc = fts3SegmentMerge(p, i, FTS3_SEGCURSOR_PENDING);
+ if( rc==SQLITE_DONE ) rc = SQLITE_OK;
}
-
- /* Determine the next index at level 0. If level 0 is already full, this
- ** call may merge all existing level 0 segments into a single level 1
- ** segment.
- */
- rc = fts3AllocateSegdirIdx(p, 0, &idx);
-
- /* If no errors have occured, iterate through the contents of the
- ** pending-terms hash table using the Fts3SegReader iterator. The callback
- ** writes each term (along with its doclist) to the database via the
- ** SegmentWriter handle pWriter.
- */
- if( rc==SQLITE_OK ){
- void *c = (void *)&pWriter; /* SegReaderIterate() callback context */
- Fts3SegFilter f; /* SegReaderIterate() parameters */
-
- memset(&f, 0, sizeof(Fts3SegFilter));
- f.flags = FTS3_SEGMENT_REQUIRE_POS;
- rc = sqlite3Fts3SegReaderIterate(p, &pReader, 1, &f, fts3FlushCallback, c);
- }
- assert( pWriter || rc!=SQLITE_OK );
-
- /* If no errors have occured, flush the SegmentWriter object to the
- ** database. Then delete the SegmentWriter and Fts3SegReader objects
- ** allocated by this function.
- */
- if( rc==SQLITE_OK ){
- rc = fts3SegWriterFlush(p, pWriter, 0, idx);
- }
- fts3SegWriterFree(pWriter);
- sqlite3Fts3SegReaderFree(pReader);
-
- if( rc==SQLITE_OK ){
- sqlite3Fts3PendingTermsClear(p);
- }
+ sqlite3Fts3PendingTermsClear(p);
return rc;
}
@@ -117047,9 +127491,9 @@
** a blob of varints.
*/
static void fts3InsertDocsize(
- int *pRC, /* Result code */
- Fts3Table *p, /* Table into which to insert */
- u32 *aSz /* Sizes of each column */
+ int *pRC, /* Result code */
+ Fts3Table *p, /* Table into which to insert */
+ u32 *aSz /* Sizes of each column, in tokens */
){
char *pBlob; /* The BLOB encoding of the document size */
int nBlob; /* Number of bytes in the BLOB */
@@ -117154,6 +127598,103 @@
sqlite3_free(a);
}
+static int fts3DoOptimize(Fts3Table *p, int bReturnDone){
+ int i;
+ int bSeenDone = 0;
+ int rc = SQLITE_OK;
+ for(i=0; rc==SQLITE_OK && i<p->nIndex; i++){
+ rc = fts3SegmentMerge(p, i, FTS3_SEGCURSOR_ALL);
+ if( rc==SQLITE_DONE ){
+ bSeenDone = 1;
+ rc = SQLITE_OK;
+ }
+ }
+ sqlite3Fts3SegmentsClose(p);
+ sqlite3Fts3PendingTermsClear(p);
+
+ return (rc==SQLITE_OK && bReturnDone && bSeenDone) ? SQLITE_DONE : rc;
+}
+
+/*
+** This function is called when the user executes the following statement:
+**
+** INSERT INTO <tbl>(<tbl>) VALUES('rebuild');
+**
+** The entire FTS index is discarded and rebuilt. If the table is one
+** created using the content=xxx option, then the new index is based on
+** the current contents of the xxx table. Otherwise, it is rebuilt based
+** on the contents of the %_content table.
+*/
+static int fts3DoRebuild(Fts3Table *p){
+ int rc; /* Return Code */
+
+ rc = fts3DeleteAll(p, 0);
+ if( rc==SQLITE_OK ){
+ u32 *aSz = 0;
+ u32 *aSzIns = 0;
+ u32 *aSzDel = 0;
+ sqlite3_stmt *pStmt = 0;
+ int nEntry = 0;
+
+ /* Compose and prepare an SQL statement to loop through the content table */
+ char *zSql = sqlite3_mprintf("SELECT %s" , p->zReadExprlist);
+ if( !zSql ){
+ rc = SQLITE_NOMEM;
+ }else{
+ rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0);
+ sqlite3_free(zSql);
+ }
+
+ if( rc==SQLITE_OK ){
+ int nByte = sizeof(u32) * (p->nColumn+1)*3;
+ aSz = (u32 *)sqlite3_malloc(nByte);
+ if( aSz==0 ){
+ rc = SQLITE_NOMEM;
+ }else{
+ memset(aSz, 0, nByte);
+ aSzIns = &aSz[p->nColumn+1];
+ aSzDel = &aSzIns[p->nColumn+1];
+ }
+ }
+
+ while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){
+ int iCol;
+ rc = fts3PendingTermsDocid(p, sqlite3_column_int64(pStmt, 0));
+ aSz[p->nColumn] = 0;
+ for(iCol=0; rc==SQLITE_OK && iCol<p->nColumn; iCol++){
+ const char *z = (const char *) sqlite3_column_text(pStmt, iCol+1);
+ rc = fts3PendingTermsAdd(p, z, iCol, &aSz[iCol]);
+ aSz[p->nColumn] += sqlite3_column_bytes(pStmt, iCol+1);
+ }
+ if( p->bHasDocsize ){
+ fts3InsertDocsize(&rc, p, aSz);
+ }
+ if( rc!=SQLITE_OK ){
+ sqlite3_finalize(pStmt);
+ pStmt = 0;
+ }else{
+ nEntry++;
+ for(iCol=0; iCol<=p->nColumn; iCol++){
+ aSzIns[iCol] += aSz[iCol];
+ }
+ }
+ }
+ if( p->bHasStat ){
+ fts3UpdateDocTotals(&rc, p, aSzIns, aSzDel, nEntry);
+ }
+ sqlite3_free(aSz);
+
+ if( pStmt ){
+ int rc2 = sqlite3_finalize(pStmt);
+ if( rc==SQLITE_OK ){
+ rc = rc2;
+ }
+ }
+ }
+
+ return rc;
+}
+
/*
** Handle a 'special' INSERT of the form:
**
@@ -117170,12 +127711,9 @@
if( !zVal ){
return SQLITE_NOMEM;
}else if( nVal==8 && 0==sqlite3_strnicmp(zVal, "optimize", 8) ){
- rc = fts3SegmentMerge(p, -1);
- if( rc==SQLITE_DONE ){
- rc = SQLITE_OK;
- }else{
- sqlite3Fts3PendingTermsClear(p);
- }
+ rc = fts3DoOptimize(p, 0);
+ }else if( nVal==7 && 0==sqlite3_strnicmp(zVal, "rebuild", 7) ){
+ rc = fts3DoRebuild(p);
#ifdef SQLITE_TEST
}else if( nVal>9 && 0==sqlite3_strnicmp(zVal, "nodesize=", 9) ){
p->nNodeSize = atoi(&zVal[9]);
@@ -117188,57 +127726,19 @@
rc = SQLITE_ERROR;
}
- sqlite3Fts3SegmentsClose(p);
return rc;
}
/*
-** Return the deferred doclist associated with deferred token pDeferred.
-** This function assumes that sqlite3Fts3CacheDeferredDoclists() has already
-** been called to allocate and populate the doclist.
-*/
-SQLITE_PRIVATE char *sqlite3Fts3DeferredDoclist(Fts3DeferredToken *pDeferred, int *pnByte){
- if( pDeferred->pList ){
- *pnByte = pDeferred->pList->nData;
- return pDeferred->pList->aData;
- }
- *pnByte = 0;
- return 0;
-}
-
-/*
-** Helper fucntion for FreeDeferredDoclists(). This function removes all
-** references to deferred doclists from within the tree of Fts3Expr
-** structures headed by
-*/
-static void fts3DeferredDoclistClear(Fts3Expr *pExpr){
- if( pExpr ){
- fts3DeferredDoclistClear(pExpr->pLeft);
- fts3DeferredDoclistClear(pExpr->pRight);
- if( pExpr->isLoaded ){
- sqlite3_free(pExpr->aDoclist);
- pExpr->isLoaded = 0;
- pExpr->aDoclist = 0;
- pExpr->nDoclist = 0;
- pExpr->pCurrent = 0;
- pExpr->iCurrent = 0;
- }
- }
-}
-
-/*
** Delete all cached deferred doclists. Deferred doclists are cached
** (allocated) by the sqlite3Fts3CacheDeferredDoclists() function.
*/
SQLITE_PRIVATE void sqlite3Fts3FreeDeferredDoclists(Fts3Cursor *pCsr){
Fts3DeferredToken *pDef;
for(pDef=pCsr->pDeferred; pDef; pDef=pDef->pNext){
- sqlite3_free(pDef->pList);
+ fts3PendingListDelete(pDef->pList);
pDef->pList = 0;
}
- if( pCsr->pDeferred ){
- fts3DeferredDoclistClear(pCsr->pExpr);
- }
}
/*
@@ -117250,7 +127750,7 @@
Fts3DeferredToken *pNext;
for(pDef=pCsr->pDeferred; pDef; pDef=pNext){
pNext = pDef->pNext;
- sqlite3_free(pDef->pList);
+ fts3PendingListDelete(pDef->pList);
sqlite3_free(pDef);
}
pCsr->pDeferred = 0;
@@ -117294,6 +127794,7 @@
for(pDef=pCsr->pDeferred; pDef && rc==SQLITE_OK; pDef=pDef->pNext){
Fts3PhraseToken *pPT = pDef->pToken;
if( (pDef->iCol>=p->nColumn || pDef->iCol==i)
+ && (pPT->bFirst==0 || iPos==0)
&& (pPT->n==nToken || (pPT->isPrefix && pPT->n<nToken))
&& (0==memcmp(zToken, pPT->z, pPT->n))
){
@@ -117315,6 +127816,33 @@
return rc;
}
+SQLITE_PRIVATE int sqlite3Fts3DeferredTokenList(
+ Fts3DeferredToken *p,
+ char **ppData,
+ int *pnData
+){
+ char *pRet;
+ int nSkip;
+ sqlite3_int64 dummy;
+
+ *ppData = 0;
+ *pnData = 0;
+
+ if( p->pList==0 ){
+ return SQLITE_OK;
+ }
+
+ pRet = (char *)sqlite3_malloc(p->pList->nData);
+ if( !pRet ) return SQLITE_NOMEM;
+
+ nSkip = sqlite3Fts3GetVarint(p->pList->aData, &dummy);
+ *pnData = p->pList->nData - nSkip;
+ *ppData = pRet;
+
+ memcpy(pRet, &p->pList->aData[nSkip], *pnData);
+ return SQLITE_OK;
+}
+
/*
** Add an entry for token pToken to the pCsr->pDeferred list.
*/
@@ -117340,6 +127868,44 @@
return SQLITE_OK;
}
+/*
+** SQLite value pRowid contains the rowid of a row that may or may not be
+** present in the FTS3 table. If it is, delete it and adjust the contents
+** of subsiduary data structures accordingly.
+*/
+static int fts3DeleteByRowid(
+ Fts3Table *p,
+ sqlite3_value *pRowid,
+ int *pnDoc,
+ u32 *aSzDel
+){
+ int isEmpty = 0;
+ int rc = fts3IsEmpty(p, pRowid, &isEmpty);
+ if( rc==SQLITE_OK ){
+ if( isEmpty ){
+ /* Deleting this row means the whole table is empty. In this case
+ ** delete the contents of all three tables and throw away any
+ ** data in the pendingTerms hash table. */
+ rc = fts3DeleteAll(p, 1);
+ *pnDoc = *pnDoc - 1;
+ }else{
+ sqlite3_int64 iRemove = sqlite3_value_int64(pRowid);
+ rc = fts3PendingTermsDocid(p, iRemove);
+ fts3DeleteTerms(&rc, p, pRowid, aSzDel);
+ if( p->zContentTbl==0 ){
+ fts3SqlExec(&rc, p, SQL_DELETE_CONTENT, &pRowid);
+ if( sqlite3_changes(p->db) ) *pnDoc = *pnDoc - 1;
+ }else{
+ *pnDoc = *pnDoc - 1;
+ }
+ if( p->bHasDocsize ){
+ fts3SqlExec(&rc, p, SQL_DELETE_DOCSIZE, &pRowid);
+ }
+ }
+ }
+
+ return rc;
+}
/*
** This function does the work for the xUpdate method of FTS3 virtual
@@ -117354,54 +127920,103 @@
Fts3Table *p = (Fts3Table *)pVtab;
int rc = SQLITE_OK; /* Return Code */
int isRemove = 0; /* True for an UPDATE or DELETE */
- sqlite3_int64 iRemove = 0; /* Rowid removed by UPDATE or DELETE */
- u32 *aSzIns; /* Sizes of inserted documents */
+ u32 *aSzIns = 0; /* Sizes of inserted documents */
u32 *aSzDel; /* Sizes of deleted documents */
int nChng = 0; /* Net change in number of documents */
+ int bInsertDone = 0;
assert( p->pSegments==0 );
+ /* Check for a "special" INSERT operation. One of the form:
+ **
+ ** INSERT INTO xyz(xyz) VALUES('command');
+ */
+ if( nArg>1
+ && sqlite3_value_type(apVal[0])==SQLITE_NULL
+ && sqlite3_value_type(apVal[p->nColumn+2])!=SQLITE_NULL
+ ){
+ rc = fts3SpecialInsert(p, apVal[p->nColumn+2]);
+ goto update_out;
+ }
+
/* Allocate space to hold the change in document sizes */
aSzIns = sqlite3_malloc( sizeof(aSzIns[0])*(p->nColumn+1)*2 );
- if( aSzIns==0 ) return SQLITE_NOMEM;
+ if( aSzIns==0 ){
+ rc = SQLITE_NOMEM;
+ goto update_out;
+ }
aSzDel = &aSzIns[p->nColumn+1];
memset(aSzIns, 0, sizeof(aSzIns[0])*(p->nColumn+1)*2);
- /* If this is a DELETE or UPDATE operation, remove the old record. */
- if( sqlite3_value_type(apVal[0])!=SQLITE_NULL ){
- int isEmpty = 0;
- rc = fts3IsEmpty(p, apVal, &isEmpty);
- if( rc==SQLITE_OK ){
- if( isEmpty ){
- /* Deleting this row means the whole table is empty. In this case
- ** delete the contents of all three tables and throw away any
- ** data in the pendingTerms hash table.
- */
- rc = fts3DeleteAll(p);
+ /* If this is an INSERT operation, or an UPDATE that modifies the rowid
+ ** value, then this operation requires constraint handling.
+ **
+ ** If the on-conflict mode is REPLACE, this means that the existing row
+ ** should be deleted from the database before inserting the new row. Or,
+ ** if the on-conflict mode is other than REPLACE, then this method must
+ ** detect the conflict and return SQLITE_CONSTRAINT before beginning to
+ ** modify the database file.
+ */
+ if( nArg>1 && p->zContentTbl==0 ){
+ /* Find the value object that holds the new rowid value. */
+ sqlite3_value *pNewRowid = apVal[3+p->nColumn];
+ if( sqlite3_value_type(pNewRowid)==SQLITE_NULL ){
+ pNewRowid = apVal[1];
+ }
+
+ if( sqlite3_value_type(pNewRowid)!=SQLITE_NULL && (
+ sqlite3_value_type(apVal[0])==SQLITE_NULL
+ || sqlite3_value_int64(apVal[0])!=sqlite3_value_int64(pNewRowid)
+ )){
+ /* The new rowid is not NULL (in this case the rowid will be
+ ** automatically assigned and there is no chance of a conflict), and
+ ** the statement is either an INSERT or an UPDATE that modifies the
+ ** rowid column. So if the conflict mode is REPLACE, then delete any
+ ** existing row with rowid=pNewRowid.
+ **
+ ** Or, if the conflict mode is not REPLACE, insert the new record into
+ ** the %_content table. If we hit the duplicate rowid constraint (or any
+ ** other error) while doing so, return immediately.
+ **
+ ** This branch may also run if pNewRowid contains a value that cannot
+ ** be losslessly converted to an integer. In this case, the eventual
+ ** call to fts3InsertData() (either just below or further on in this
+ ** function) will return SQLITE_MISMATCH. If fts3DeleteByRowid is
+ ** invoked, it will delete zero rows (since no row will have
+ ** docid=$pNewRowid if $pNewRowid is not an integer value).
+ */
+ if( sqlite3_vtab_on_conflict(p->db)==SQLITE_REPLACE ){
+ rc = fts3DeleteByRowid(p, pNewRowid, &nChng, aSzDel);
}else{
- isRemove = 1;
- iRemove = sqlite3_value_int64(apVal[0]);
- rc = fts3PendingTermsDocid(p, iRemove);
- fts3DeleteTerms(&rc, p, apVal, aSzDel);
- fts3SqlExec(&rc, p, SQL_DELETE_CONTENT, apVal);
- if( p->bHasDocsize ){
- fts3SqlExec(&rc, p, SQL_DELETE_DOCSIZE, apVal);
- }
- nChng--;
+ rc = fts3InsertData(p, apVal, pRowid);
+ bInsertDone = 1;
}
}
- }else if( sqlite3_value_type(apVal[p->nColumn+2])!=SQLITE_NULL ){
- sqlite3_free(aSzIns);
- return fts3SpecialInsert(p, apVal[p->nColumn+2]);
+ }
+ if( rc!=SQLITE_OK ){
+ goto update_out;
+ }
+
+ /* If this is a DELETE or UPDATE operation, remove the old record. */
+ if( sqlite3_value_type(apVal[0])!=SQLITE_NULL ){
+ assert( sqlite3_value_type(apVal[0])==SQLITE_INTEGER );
+ rc = fts3DeleteByRowid(p, apVal[0], &nChng, aSzDel);
+ isRemove = 1;
}
/* If this is an INSERT or UPDATE operation, insert the new record. */
if( nArg>1 && rc==SQLITE_OK ){
- rc = fts3InsertData(p, apVal, pRowid);
- if( rc==SQLITE_OK && (!isRemove || *pRowid!=iRemove) ){
+ if( bInsertDone==0 ){
+ rc = fts3InsertData(p, apVal, pRowid);
+ if( rc==SQLITE_CONSTRAINT && p->zContentTbl==0 ){
+ rc = FTS_CORRUPT_VTAB;
+ }
+ }
+ if( rc==SQLITE_OK && (!isRemove || *pRowid!=p->iPrevDocid ) ){
rc = fts3PendingTermsDocid(p, *pRowid);
}
if( rc==SQLITE_OK ){
+ assert( p->iPrevDocid==*pRowid );
rc = fts3InsertTerms(p, apVal, aSzIns);
}
if( p->bHasDocsize ){
@@ -117414,6 +128029,7 @@
fts3UpdateDocTotals(&rc, p, aSzIns, aSzDel, nChng);
}
+ update_out:
sqlite3_free(aSzIns);
sqlite3Fts3SegmentsClose(p);
return rc;
@@ -117428,12 +128044,10 @@
int rc;
rc = sqlite3_exec(p->db, "SAVEPOINT fts3", 0, 0, 0);
if( rc==SQLITE_OK ){
- rc = fts3SegmentMerge(p, -1);
- if( rc==SQLITE_OK ){
- rc = sqlite3_exec(p->db, "RELEASE fts3", 0, 0, 0);
- if( rc==SQLITE_OK ){
- sqlite3Fts3PendingTermsClear(p);
- }
+ rc = fts3DoOptimize(p, 1);
+ if( rc==SQLITE_OK || rc==SQLITE_DONE ){
+ int rc2 = sqlite3_exec(p->db, "RELEASE fts3", 0, 0, 0);
+ if( rc2!=SQLITE_OK ) rc = rc2;
}else{
sqlite3_exec(p->db, "ROLLBACK TO fts3", 0, 0, 0);
sqlite3_exec(p->db, "RELEASE fts3", 0, 0, 0);
@@ -117462,6 +128076,8 @@
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
+/* #include <string.h> */
+/* #include <assert.h> */
/*
** Characters that may appear in the second argument to matchinfo().
@@ -117623,92 +128239,24 @@
}
/*
-** The argument to this function is always a phrase node. Its doclist
-** (Fts3Expr.aDoclist[]) and the doclists associated with all phrase nodes
-** to the left of this one in the query tree have already been loaded.
-**
-** If this phrase node is part of a series of phrase nodes joined by
-** NEAR operators (and is not the left-most of said series), then elements are
-** removed from the phrases doclist consistent with the NEAR restriction. If
-** required, elements may be removed from the doclists of phrases to the
-** left of this one that are part of the same series of NEAR operator
-** connected phrases.
-**
-** If an OOM error occurs, SQLITE_NOMEM is returned. Otherwise, SQLITE_OK.
-*/
-static int fts3ExprNearTrim(Fts3Expr *pExpr){
- int rc = SQLITE_OK;
- Fts3Expr *pParent = pExpr->pParent;
-
- assert( pExpr->eType==FTSQUERY_PHRASE );
- while( rc==SQLITE_OK
- && pParent
- && pParent->eType==FTSQUERY_NEAR
- && pParent->pRight==pExpr
- ){
- /* This expression (pExpr) is the right-hand-side of a NEAR operator.
- ** Find the expression to the left of the same operator.
- */
- int nNear = pParent->nNear;
- Fts3Expr *pLeft = pParent->pLeft;
-
- if( pLeft->eType!=FTSQUERY_PHRASE ){
- assert( pLeft->eType==FTSQUERY_NEAR );
- assert( pLeft->pRight->eType==FTSQUERY_PHRASE );
- pLeft = pLeft->pRight;
- }
-
- rc = sqlite3Fts3ExprNearTrim(pLeft, pExpr, nNear);
-
- pExpr = pLeft;
- pParent = pExpr->pParent;
- }
-
- return rc;
-}
-
-/*
** This is an fts3ExprIterate() callback used while loading the doclists
** for each phrase into Fts3Expr.aDoclist[]/nDoclist. See also
** fts3ExprLoadDoclists().
*/
-static int fts3ExprLoadDoclistsCb1(Fts3Expr *pExpr, int iPhrase, void *ctx){
+static int fts3ExprLoadDoclistsCb(Fts3Expr *pExpr, int iPhrase, void *ctx){
int rc = SQLITE_OK;
+ Fts3Phrase *pPhrase = pExpr->pPhrase;
LoadDoclistCtx *p = (LoadDoclistCtx *)ctx;
UNUSED_PARAMETER(iPhrase);
p->nPhrase++;
- p->nToken += pExpr->pPhrase->nToken;
-
- if( pExpr->isLoaded==0 ){
- rc = sqlite3Fts3ExprLoadDoclist(p->pCsr, pExpr);
- pExpr->isLoaded = 1;
- if( rc==SQLITE_OK ){
- rc = fts3ExprNearTrim(pExpr);
- }
- }
+ p->nToken += pPhrase->nToken;
return rc;
}
/*
-** This is an fts3ExprIterate() callback used while loading the doclists
-** for each phrase into Fts3Expr.aDoclist[]/nDoclist. See also
-** fts3ExprLoadDoclists().
-*/
-static int fts3ExprLoadDoclistsCb2(Fts3Expr *pExpr, int iPhrase, void *ctx){
- UNUSED_PARAMETER(iPhrase);
- UNUSED_PARAMETER(ctx);
- if( pExpr->aDoclist ){
- pExpr->pCurrent = pExpr->aDoclist;
- pExpr->iCurrent = 0;
- pExpr->pCurrent += sqlite3Fts3GetVarint(pExpr->pCurrent, &pExpr->iCurrent);
- }
- return SQLITE_OK;
-}
-
-/*
** Load the doclists for each phrase in the query associated with FTS3 cursor
** pCsr.
**
@@ -117726,10 +128274,7 @@
int rc; /* Return Code */
LoadDoclistCtx sCtx = {0,0,0}; /* Context for fts3ExprIterate() */
sCtx.pCsr = pCsr;
- rc = fts3ExprIterate(pCsr->pExpr, fts3ExprLoadDoclistsCb1, (void *)&sCtx);
- if( rc==SQLITE_OK ){
- (void)fts3ExprIterate(pCsr->pExpr, fts3ExprLoadDoclistsCb2, 0);
- }
+ rc = fts3ExprIterate(pCsr->pExpr, fts3ExprLoadDoclistsCb, (void *)&sCtx);
if( pnPhrase ) *pnPhrase = sCtx.nPhrase;
if( pnToken ) *pnToken = sCtx.nToken;
return rc;
@@ -117880,11 +128425,12 @@
pPhrase->nToken = pExpr->pPhrase->nToken;
- pCsr = sqlite3Fts3FindPositions(pExpr, p->pCsr->iPrevId, p->iCol);
+ pCsr = sqlite3Fts3EvalPhrasePoslist(p->pCsr, pExpr, p->iCol);
if( pCsr ){
int iFirst = 0;
pPhrase->pList = pCsr;
fts3GetDeltaPosition(&pCsr, &iFirst);
+ assert( iFirst>=0 );
pPhrase->pHead = pCsr;
pPhrase->pTail = pCsr;
pPhrase->iHead = iFirst;
@@ -118237,26 +128783,6 @@
return nEntry;
}
-static void fts3LoadColumnlistCounts(char **pp, u32 *aOut, int isGlobal){
- char *pCsr = *pp;
- while( *pCsr ){
- int nHit;
- sqlite3_int64 iCol = 0;
- if( *pCsr==0x01 ){
- pCsr++;
- pCsr += sqlite3Fts3GetVarint(pCsr, &iCol);
- }
- nHit = fts3ColumnlistCount(&pCsr);
- assert( nHit>0 );
- if( isGlobal ){
- aOut[iCol*3+1]++;
- }
- aOut[iCol*3] += nHit;
- }
- pCsr++;
- *pp = pCsr;
-}
-
/*
** fts3ExprIterate() callback used to collect the "global" matchinfo stats
** for a single query.
@@ -118290,48 +128816,9 @@
void *pCtx /* Pointer to MatchInfo structure */
){
MatchInfo *p = (MatchInfo *)pCtx;
- Fts3Cursor *pCsr = p->pCursor;
- char *pIter;
- char *pEnd;
- char *pFree = 0;
- u32 *aOut = &p->aMatchinfo[3*iPhrase*p->nCol];
-
- assert( pExpr->isLoaded );
- assert( pExpr->eType==FTSQUERY_PHRASE );
-
- if( pCsr->pDeferred ){
- Fts3Phrase *pPhrase = pExpr->pPhrase;
- int ii;
- for(ii=0; ii<pPhrase->nToken; ii++){
- if( pPhrase->aToken[ii].bFulltext ) break;
- }
- if( ii<pPhrase->nToken ){
- int nFree = 0;
- int rc = sqlite3Fts3ExprLoadFtDoclist(pCsr, pExpr, &pFree, &nFree);
- if( rc!=SQLITE_OK ) return rc;
- pIter = pFree;
- pEnd = &pFree[nFree];
- }else{
- int iCol; /* Column index */
- for(iCol=0; iCol<p->nCol; iCol++){
- aOut[iCol*3 + 1] = (u32)p->nDoc;
- aOut[iCol*3 + 2] = (u32)p->nDoc;
- }
- return SQLITE_OK;
- }
- }else{
- pIter = pExpr->aDoclist;
- pEnd = &pExpr->aDoclist[pExpr->nDoclist];
- }
-
- /* Fill in the global hit count matrix row for this phrase. */
- while( pIter<pEnd ){
- while( *pIter++ & 0x80 ); /* Skip past docid. */
- fts3LoadColumnlistCounts(&pIter, &aOut[1], 1);
- }
-
- sqlite3_free(pFree);
- return SQLITE_OK;
+ return sqlite3Fts3EvalPhraseStats(
+ p->pCursor, pExpr, &p->aMatchinfo[3*iPhrase*p->nCol]
+ );
}
/*
@@ -118345,17 +128832,16 @@
void *pCtx /* Pointer to MatchInfo structure */
){
MatchInfo *p = (MatchInfo *)pCtx;
+ int iStart = iPhrase * p->nCol * 3;
+ int i;
- if( pExpr->aDoclist ){
+ for(i=0; i<p->nCol; i++){
char *pCsr;
- int iStart = iPhrase * p->nCol * 3;
- int i;
-
- for(i=0; i<p->nCol; i++) p->aMatchinfo[iStart+i*3] = 0;
-
- pCsr = sqlite3Fts3FindPositions(pExpr, p->pCursor->iPrevId, -1);
+ pCsr = sqlite3Fts3EvalPhrasePoslist(p->pCursor, pExpr, i);
if( pCsr ){
- fts3LoadColumnlistCounts(&pCsr, &p->aMatchinfo[iStart], 0);
+ p->aMatchinfo[iStart+i*3] = fts3ColumnlistCount(&pCsr);
+ }else{
+ p->aMatchinfo[iStart+i*3] = 0;
}
}
@@ -118421,9 +128907,11 @@
if( rc!=SQLITE_OK ) return rc;
}
pStmt = *ppStmt;
+ assert( sqlite3_data_count(pStmt)==1 );
a = sqlite3_column_blob(pStmt, 0);
a += sqlite3Fts3GetVarint(a, &nDoc);
+ if( nDoc==0 ) return FTS_CORRUPT_VTAB;
*pnDoc = (u32)nDoc;
if( paLen ) *paLen = a;
@@ -118439,9 +128927,8 @@
typedef struct LcsIterator LcsIterator;
struct LcsIterator {
Fts3Expr *pExpr; /* Pointer to phrase expression */
- char *pRead; /* Cursor used to iterate through aDoclist */
int iPosOffset; /* Tokens count up to end of this phrase */
- int iCol; /* Current column number */
+ char *pRead; /* Cursor used to iterate through aDoclist */
int iPos; /* Current position */
};
@@ -118472,17 +128959,10 @@
int rc = 0;
pRead += sqlite3Fts3GetVarint(pRead, &iRead);
- if( iRead==0 ){
- pIter->iCol = LCS_ITERATOR_FINISHED;
+ if( iRead==0 || iRead==1 ){
+ pRead = 0;
rc = 1;
}else{
- if( iRead==1 ){
- pRead += sqlite3Fts3GetVarint(pRead, &iRead);
- pIter->iCol = (int)iRead;
- pIter->iPos = pIter->iPosOffset;
- pRead += sqlite3Fts3GetVarint(pRead, &iRead);
- rc = 1;
- }
pIter->iPos += (int)(iRead-2);
}
@@ -118514,42 +128994,34 @@
if( !aIter ) return SQLITE_NOMEM;
memset(aIter, 0, sizeof(LcsIterator) * pCsr->nPhrase);
(void)fts3ExprIterate(pCsr->pExpr, fts3MatchinfoLcsCb, (void*)aIter);
+
for(i=0; i<pInfo->nPhrase; i++){
LcsIterator *pIter = &aIter[i];
nToken -= pIter->pExpr->pPhrase->nToken;
pIter->iPosOffset = nToken;
- pIter->pRead = sqlite3Fts3FindPositions(pIter->pExpr, pCsr->iPrevId, -1);
- if( pIter->pRead ){
- pIter->iPos = pIter->iPosOffset;
- fts3LcsIteratorAdvance(&aIter[i]);
- }else{
- pIter->iCol = LCS_ITERATOR_FINISHED;
- }
}
for(iCol=0; iCol<pInfo->nCol; iCol++){
int nLcs = 0; /* LCS value for this column */
int nLive = 0; /* Number of iterators in aIter not at EOF */
- /* Loop through the iterators in aIter[]. Set nLive to the number of
- ** iterators that point to a position-list corresponding to column iCol.
- */
for(i=0; i<pInfo->nPhrase; i++){
- assert( aIter[i].iCol>=iCol );
- if( aIter[i].iCol==iCol ) nLive++;
+ LcsIterator *pIt = &aIter[i];
+ pIt->pRead = sqlite3Fts3EvalPhrasePoslist(pCsr, pIt->pExpr, iCol);
+ if( pIt->pRead ){
+ pIt->iPos = pIt->iPosOffset;
+ fts3LcsIteratorAdvance(&aIter[i]);
+ nLive++;
+ }
}
- /* The following loop runs until all iterators in aIter[] have finished
- ** iterating through positions in column iCol. Exactly one of the
- ** iterators is advanced each time the body of the loop is run.
- */
while( nLive>0 ){
LcsIterator *pAdv = 0; /* The iterator to advance by one position */
int nThisLcs = 0; /* LCS for the current iterator positions */
for(i=0; i<pInfo->nPhrase; i++){
LcsIterator *pIter = &aIter[i];
- if( iCol!=pIter->iCol ){
+ if( pIter->pRead==0 ){
/* This iterator is already at EOF for this column. */
nThisLcs = 0;
}else{
@@ -118615,7 +129087,7 @@
case FTS3_MATCHINFO_NDOC:
if( bGlobal ){
- sqlite3_int64 nDoc;
+ sqlite3_int64 nDoc = 0;
rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &nDoc, 0);
pInfo->aMatchinfo[0] = (u32)nDoc;
}
@@ -118630,9 +129102,11 @@
if( rc==SQLITE_OK ){
int iCol;
for(iCol=0; iCol<pInfo->nCol; iCol++){
+ u32 iVal;
sqlite3_int64 nToken;
a += sqlite3Fts3GetVarint(a, &nToken);
- pInfo->aMatchinfo[iCol] = (u32)(((u32)(nToken&0xffffffff)+nDoc/2)/nDoc);
+ iVal = (u32)(((u32)(nToken&0xffffffff)+nDoc/2)/nDoc);
+ pInfo->aMatchinfo[iCol] = iVal;
}
}
}
@@ -118869,6 +129343,7 @@
};
struct TermOffsetCtx {
+ Fts3Cursor *pCsr;
int iCol; /* Column of table to populate aTerm for */
int iTerm;
sqlite3_int64 iDocid;
@@ -118886,7 +129361,7 @@
int iPos = 0; /* First position in position-list */
UNUSED_PARAMETER(iPhrase);
- pList = sqlite3Fts3FindPositions(pExpr, p->iDocid, p->iCol);
+ pList = sqlite3Fts3EvalPhrasePoslist(p->pCsr, pExpr, p->iCol);
nTerm = pExpr->pPhrase->nToken;
if( pList ){
fts3GetDeltaPosition(&pList, &iPos);
@@ -118939,6 +129414,7 @@
goto offsets_out;
}
sCtx.iDocid = pCsr->iPrevId;
+ sCtx.pCsr = pCsr;
/* Loop through the table columns, appending offset information to
** string-buffer res for each column.
@@ -118996,7 +129472,7 @@
if( !pTerm ){
/* All offsets for this column have been gathered. */
- break;
+ rc = SQLITE_DONE;
}else{
assert( iCurrent<=iMinPos );
if( 0==(0xFE&*pTerm->pList) ){
@@ -119013,8 +129489,8 @@
"%d %d %d %d ", iCol, pTerm-sCtx.aTerm, iStart, iEnd-iStart
);
rc = fts3StringAppend(&res, aBuffer, -1);
- }else if( rc==SQLITE_DONE ){
- rc = SQLITE_CORRUPT;
+ }else if( rc==SQLITE_DONE && pTab->zContentTbl==0 ){
+ rc = FTS_CORRUPT_VTAB;
}
}
}
@@ -119190,6 +129666,8 @@
#else
#endif
+/* #include <string.h> */
+/* #include <assert.h> */
#ifndef SQLITE_AMALGAMATION
#include "sqlite3rtree.h"
@@ -119602,17 +130080,17 @@
if( pNode && iNode==1 ){
pRtree->iDepth = readInt16(pNode->zData);
if( pRtree->iDepth>RTREE_MAX_DEPTH ){
- rc = SQLITE_CORRUPT;
+ rc = SQLITE_CORRUPT_VTAB;
}
}
/* If no error has occurred so far, check if the "number of entries"
** field on the node is too large. If so, set the return code to
- ** SQLITE_CORRUPT.
+ ** SQLITE_CORRUPT_VTAB.
*/
if( pNode && rc==SQLITE_OK ){
if( NCELL(pNode)>((pRtree->iNodeSize-4)/pRtree->nBytesPerCell) ){
- rc = SQLITE_CORRUPT;
+ rc = SQLITE_CORRUPT_VTAB;
}
}
@@ -119620,7 +130098,7 @@
if( pNode!=0 ){
nodeHashInsert(pRtree, pNode);
}else{
- rc = SQLITE_CORRUPT;
+ rc = SQLITE_CORRUPT_VTAB;
}
*ppNode = pNode;
}else{
@@ -120147,7 +130625,7 @@
return SQLITE_OK;
}
}
- return SQLITE_CORRUPT;
+ return SQLITE_CORRUPT_VTAB;
}
/*
@@ -120278,7 +130756,7 @@
int nBlob;
/* Check that value is actually a blob. */
- if( !sqlite3_value_type(pValue)==SQLITE_BLOB ) return SQLITE_ERROR;
+ if( sqlite3_value_type(pValue)!=SQLITE_BLOB ) return SQLITE_ERROR;
/* Check that the blob is roughly the right size. */
nBlob = sqlite3_value_bytes(pValue);
@@ -120353,7 +130831,8 @@
rc = SQLITE_NOMEM;
}else{
memset(pCsr->aConstraint, 0, sizeof(RtreeConstraint)*argc);
- assert( (idxStr==0 && argc==0) || strlen(idxStr)==argc*2 );
+ assert( (idxStr==0 && argc==0)
+ || (idxStr && (int)strlen(idxStr)==argc*2) );
for(ii=0; ii<argc; ii++){
RtreeConstraint *p = &pCsr->aConstraint[ii];
p->op = idxStr[ii*2];
@@ -120438,7 +130917,7 @@
*/
static int rtreeBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){
int rc = SQLITE_OK;
- int ii, cCol;
+ int ii;
int iIdx = 0;
char zIdxStr[RTREE_MAX_DIMENSIONS*8+1];
@@ -120446,7 +130925,7 @@
UNUSED_PARAMETER(tab);
assert( pIdxInfo->idxStr==0 );
- for(ii=0; ii<pIdxInfo->nConstraint; ii++){
+ for(ii=0; ii<pIdxInfo->nConstraint && iIdx<(int)(sizeof(zIdxStr)-1); ii++){
struct sqlite3_index_constraint *p = &pIdxInfo->aConstraint[ii];
if( p->usable && p->iColumn==0 && p->op==SQLITE_INDEX_CONSTRAINT_EQ ){
@@ -120470,9 +130949,7 @@
}
if( p->usable && (p->iColumn>0 || p->op==SQLITE_INDEX_CONSTRAINT_MATCH) ){
- int j, opmsk;
- static const unsigned char compatible[] = { 0, 0, 1, 1, 2, 2 };
- u8 op = 0;
+ u8 op;
switch( p->op ){
case SQLITE_INDEX_CONSTRAINT_EQ: op = RTREE_EQ; break;
case SQLITE_INDEX_CONSTRAINT_GT: op = RTREE_GT; break;
@@ -120484,37 +130961,10 @@
op = RTREE_MATCH;
break;
}
- assert( op!=0 );
-
- /* Make sure this particular constraint has not been used before.
- ** If it has been used before, ignore it.
- **
- ** A <= or < can be used if there is a prior >= or >.
- ** A >= or > can be used if there is a prior < or <=.
- ** A <= or < is disqualified if there is a prior <=, <, or ==.
- ** A >= or > is disqualified if there is a prior >=, >, or ==.
- ** A == is disqualifed if there is any prior constraint.
- */
- assert( compatible[RTREE_EQ & 7]==0 );
- assert( compatible[RTREE_LT & 7]==1 );
- assert( compatible[RTREE_LE & 7]==1 );
- assert( compatible[RTREE_GT & 7]==2 );
- assert( compatible[RTREE_GE & 7]==2 );
- cCol = p->iColumn - 1 + 'a';
- opmsk = compatible[op & 7];
- for(j=0; j<iIdx; j+=2){
- if( zIdxStr[j+1]==cCol && (compatible[zIdxStr[j] & 7] & opmsk)!=0 ){
- op = 0;
- break;
- }
- }
- if( op ){
- assert( iIdx<sizeof(zIdxStr)-1 );
- zIdxStr[iIdx++] = op;
- zIdxStr[iIdx++] = cCol;
- pIdxInfo->aConstraintUsage[ii].argvIndex = (iIdx/2);
- pIdxInfo->aConstraintUsage[ii].omit = 1;
- }
+ zIdxStr[iIdx++] = op;
+ zIdxStr[iIdx++] = p->iColumn - 1 + 'a';
+ pIdxInfo->aConstraintUsage[ii].argvIndex = (iIdx/2);
+ pIdxInfo->aConstraintUsage[ii].omit = 1;
}
}
@@ -120535,7 +130985,7 @@
float area = 1.0;
int ii;
for(ii=0; ii<(pRtree->nDim*2); ii+=2){
- area = area * (DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii]));
+ area = (float)(area * (DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii])));
}
return area;
}
@@ -120548,7 +130998,7 @@
float margin = 0.0;
int ii;
for(ii=0; ii<(pRtree->nDim*2); ii+=2){
- margin += (DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii]));
+ margin += (float)(DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii]));
}
return margin;
}
@@ -120633,7 +131083,7 @@
o = 0.0;
break;
}else{
- o = o * (x2-x1);
+ o = o * (float)(x2-x1);
}
}
overlap += o;
@@ -120652,12 +131102,12 @@
int nCell,
int iExclude
){
- float before;
- float after;
+ double before;
+ double after;
before = cellOverlap(pRtree, p, aCell, nCell, iExclude);
cellUnion(pRtree, p, pInsert);
after = cellOverlap(pRtree, p, aCell, nCell, iExclude);
- return after-before;
+ return (float)(after-before);
}
#endif
@@ -120679,11 +131129,14 @@
for(ii=0; rc==SQLITE_OK && ii<(pRtree->iDepth-iHeight); ii++){
int iCell;
- sqlite3_int64 iBest;
+ sqlite3_int64 iBest = 0;
- float fMinGrowth;
- float fMinArea;
- float fMinOverlap;
+ float fMinGrowth = 0.0;
+ float fMinArea = 0.0;
+#if VARIANT_RSTARTREE_CHOOSESUBTREE
+ float fMinOverlap = 0.0;
+ float overlap;
+#endif
int nCell = NCELL(pNode);
RtreeCell cell;
@@ -120715,7 +131168,6 @@
int bBest = 0;
float growth;
float area;
- float overlap = 0.0;
nodeGetCell(pRtree, pNode, iCell, &cell);
growth = cellGrowth(pRtree, &cell, pCell);
area = cellArea(pRtree, &cell);
@@ -120723,6 +131175,8 @@
#if VARIANT_RSTARTREE_CHOOSESUBTREE
if( ii==(pRtree->iDepth-1) ){
overlap = cellOverlapEnlargement(pRtree,&cell,pCell,aCell,nCell,iCell);
+ }else{
+ overlap = 0.0;
}
if( (iCell==0)
|| (overlap<fMinOverlap)
@@ -120730,6 +131184,7 @@
|| (overlap==fMinOverlap && growth==fMinGrowth && area<fMinArea)
){
bBest = 1;
+ fMinOverlap = overlap;
}
#else
if( iCell==0||growth<fMinGrowth||(growth==fMinGrowth && area<fMinArea) ){
@@ -120737,7 +131192,6 @@
}
#endif
if( bBest ){
- fMinOverlap = overlap;
fMinGrowth = growth;
fMinArea = area;
iBest = cell.iRowid;
@@ -120771,7 +131225,7 @@
int iCell;
if( nodeParentIndex(pRtree, p, &iCell) ){
- return SQLITE_CORRUPT;
+ return SQLITE_CORRUPT_VTAB;
}
nodeGetCell(pRtree, pParent, iCell, &cell);
@@ -121113,9 +131567,9 @@
int *aSpare;
int ii;
- int iBestDim;
- int iBestSplit;
- float fBestMargin;
+ int iBestDim = 0;
+ int iBestSplit = 0;
+ float fBestMargin = 0.0;
int nByte = (pRtree->nDim+1)*(sizeof(int*)+nCell*sizeof(int));
@@ -121137,9 +131591,9 @@
for(ii=0; ii<pRtree->nDim; ii++){
float margin = 0.0;
- float fBestOverlap;
- float fBestArea;
- int iBestLeft;
+ float fBestOverlap = 0.0;
+ float fBestArea = 0.0;
+ int iBestLeft = 0;
int nLeft;
for(
@@ -121443,7 +131897,7 @@
}
rc = sqlite3_reset(pRtree->pReadParent);
if( rc==SQLITE_OK ) rc = rc2;
- if( rc==SQLITE_OK && !pChild->pParent ) rc = SQLITE_CORRUPT;
+ if( rc==SQLITE_OK && !pChild->pParent ) rc = SQLITE_CORRUPT_VTAB;
pChild = pChild->pParent;
}
return rc;
@@ -121454,7 +131908,7 @@
static int removeNode(Rtree *pRtree, RtreeNode *pNode, int iHeight){
int rc;
int rc2;
- RtreeNode *pParent;
+ RtreeNode *pParent = 0;
int iCell;
assert( pNode->nRef==1 );
@@ -121602,19 +132056,19 @@
}
aOrder[ii] = ii;
for(iDim=0; iDim<pRtree->nDim; iDim++){
- aCenterCoord[iDim] += DCOORD(aCell[ii].aCoord[iDim*2]);
- aCenterCoord[iDim] += DCOORD(aCell[ii].aCoord[iDim*2+1]);
+ aCenterCoord[iDim] += (float)DCOORD(aCell[ii].aCoord[iDim*2]);
+ aCenterCoord[iDim] += (float)DCOORD(aCell[ii].aCoord[iDim*2+1]);
}
}
for(iDim=0; iDim<pRtree->nDim; iDim++){
- aCenterCoord[iDim] = aCenterCoord[iDim]/((float)nCell*2.0);
+ aCenterCoord[iDim] = (float)(aCenterCoord[iDim]/((float)nCell*2.0));
}
for(ii=0; ii<nCell; ii++){
aDistance[ii] = 0.0;
for(iDim=0; iDim<pRtree->nDim; iDim++){
- float coord = DCOORD(aCell[ii].aCoord[iDim*2+1]) -
- DCOORD(aCell[ii].aCoord[iDim*2]);
+ float coord = (float)(DCOORD(aCell[ii].aCoord[iDim*2+1]) -
+ DCOORD(aCell[ii].aCoord[iDim*2]));
aDistance[ii] += (coord-aCenterCoord[iDim])*(coord-aCenterCoord[iDim]);
}
}
@@ -121713,10 +132167,10 @@
/* Find a node to store this cell in. pNode->iNode currently contains
** the height of the sub-tree headed by the cell.
*/
- rc = ChooseLeaf(pRtree, &cell, pNode->iNode, &pInsert);
+ rc = ChooseLeaf(pRtree, &cell, (int)pNode->iNode, &pInsert);
if( rc==SQLITE_OK ){
int rc2;
- rc = rtreeInsertCell(pRtree, pInsert, &cell, pNode->iNode);
+ rc = rtreeInsertCell(pRtree, pInsert, &cell, (int)pNode->iNode);
rc2 = nodeRelease(pRtree, pInsert);
if( rc==SQLITE_OK ){
rc = rc2;
@@ -121740,6 +132194,90 @@
}
/*
+** Remove the entry with rowid=iDelete from the r-tree structure.
+*/
+static int rtreeDeleteRowid(Rtree *pRtree, sqlite3_int64 iDelete){
+ int rc; /* Return code */
+ RtreeNode *pLeaf; /* Leaf node containing record iDelete */
+ int iCell; /* Index of iDelete cell in pLeaf */
+ RtreeNode *pRoot; /* Root node of rtree structure */
+
+
+ /* Obtain a reference to the root node to initialise Rtree.iDepth */
+ rc = nodeAcquire(pRtree, 1, 0, &pRoot);
+
+ /* Obtain a reference to the leaf node that contains the entry
+ ** about to be deleted.
+ */
+ if( rc==SQLITE_OK ){
+ rc = findLeafNode(pRtree, iDelete, &pLeaf);
+ }
+
+ /* Delete the cell in question from the leaf node. */
+ if( rc==SQLITE_OK ){
+ int rc2;
+ rc = nodeRowidIndex(pRtree, pLeaf, iDelete, &iCell);
+ if( rc==SQLITE_OK ){
+ rc = deleteCell(pRtree, pLeaf, iCell, 0);
+ }
+ rc2 = nodeRelease(pRtree, pLeaf);
+ if( rc==SQLITE_OK ){
+ rc = rc2;
+ }
+ }
+
+ /* Delete the corresponding entry in the <rtree>_rowid table. */
+ if( rc==SQLITE_OK ){
+ sqlite3_bind_int64(pRtree->pDeleteRowid, 1, iDelete);
+ sqlite3_step(pRtree->pDeleteRowid);
+ rc = sqlite3_reset(pRtree->pDeleteRowid);
+ }
+
+ /* Check if the root node now has exactly one child. If so, remove
+ ** it, schedule the contents of the child for reinsertion and
+ ** reduce the tree height by one.
+ **
+ ** This is equivalent to copying the contents of the child into
+ ** the root node (the operation that Gutman's paper says to perform
+ ** in this scenario).
+ */
+ if( rc==SQLITE_OK && pRtree->iDepth>0 && NCELL(pRoot)==1 ){
+ int rc2;
+ RtreeNode *pChild;
+ i64 iChild = nodeGetRowid(pRtree, pRoot, 0);
+ rc = nodeAcquire(pRtree, iChild, pRoot, &pChild);
+ if( rc==SQLITE_OK ){
+ rc = removeNode(pRtree, pChild, pRtree->iDepth-1);
+ }
+ rc2 = nodeRelease(pRtree, pChild);
+ if( rc==SQLITE_OK ) rc = rc2;
+ if( rc==SQLITE_OK ){
+ pRtree->iDepth--;
+ writeInt16(pRoot->zData, pRtree->iDepth);
+ pRoot->isDirty = 1;
+ }
+ }
+
+ /* Re-insert the contents of any underfull nodes removed from the tree. */
+ for(pLeaf=pRtree->pDeleted; pLeaf; pLeaf=pRtree->pDeleted){
+ if( rc==SQLITE_OK ){
+ rc = reinsertNodeContent(pRtree, pLeaf);
+ }
+ pRtree->pDeleted = pLeaf->pNext;
+ sqlite3_free(pLeaf);
+ }
+
+ /* Release the reference to the root node. */
+ if( rc==SQLITE_OK ){
+ rc = nodeRelease(pRtree, pRoot);
+ }else{
+ nodeRelease(pRtree, pRoot);
+ }
+
+ return rc;
+}
+
+/*
** The xUpdate method for rtree module virtual tables.
*/
static int rtreeUpdate(
@@ -121750,103 +132288,25 @@
){
Rtree *pRtree = (Rtree *)pVtab;
int rc = SQLITE_OK;
+ RtreeCell cell; /* New cell to insert if nData>1 */
+ int bHaveRowid = 0; /* Set to 1 after new rowid is determined */
rtreeReference(pRtree);
-
assert(nData>=1);
- /* If azData[0] is not an SQL NULL value, it is the rowid of a
- ** record to delete from the r-tree table. The following block does
- ** just that.
+ /* Constraint handling. A write operation on an r-tree table may return
+ ** SQLITE_CONSTRAINT for two reasons:
+ **
+ ** 1. A duplicate rowid value, or
+ ** 2. The supplied data violates the "x2>=x1" constraint.
+ **
+ ** In the first case, if the conflict-handling mode is REPLACE, then
+ ** the conflicting row can be removed before proceeding. In the second
+ ** case, SQLITE_CONSTRAINT must be returned regardless of the
+ ** conflict-handling mode specified by the user.
*/
- if( sqlite3_value_type(azData[0])!=SQLITE_NULL ){
- i64 iDelete; /* The rowid to delete */
- RtreeNode *pLeaf; /* Leaf node containing record iDelete */
- int iCell; /* Index of iDelete cell in pLeaf */
- RtreeNode *pRoot;
-
- /* Obtain a reference to the root node to initialise Rtree.iDepth */
- rc = nodeAcquire(pRtree, 1, 0, &pRoot);
-
- /* Obtain a reference to the leaf node that contains the entry
- ** about to be deleted.
- */
- if( rc==SQLITE_OK ){
- iDelete = sqlite3_value_int64(azData[0]);
- rc = findLeafNode(pRtree, iDelete, &pLeaf);
- }
-
- /* Delete the cell in question from the leaf node. */
- if( rc==SQLITE_OK ){
- int rc2;
- rc = nodeRowidIndex(pRtree, pLeaf, iDelete, &iCell);
- if( rc==SQLITE_OK ){
- rc = deleteCell(pRtree, pLeaf, iCell, 0);
- }
- rc2 = nodeRelease(pRtree, pLeaf);
- if( rc==SQLITE_OK ){
- rc = rc2;
- }
- }
-
- /* Delete the corresponding entry in the <rtree>_rowid table. */
- if( rc==SQLITE_OK ){
- sqlite3_bind_int64(pRtree->pDeleteRowid, 1, iDelete);
- sqlite3_step(pRtree->pDeleteRowid);
- rc = sqlite3_reset(pRtree->pDeleteRowid);
- }
-
- /* Check if the root node now has exactly one child. If so, remove
- ** it, schedule the contents of the child for reinsertion and
- ** reduce the tree height by one.
- **
- ** This is equivalent to copying the contents of the child into
- ** the root node (the operation that Gutman's paper says to perform
- ** in this scenario).
- */
- if( rc==SQLITE_OK && pRtree->iDepth>0 && NCELL(pRoot)==1 ){
- int rc2;
- RtreeNode *pChild;
- i64 iChild = nodeGetRowid(pRtree, pRoot, 0);
- rc = nodeAcquire(pRtree, iChild, pRoot, &pChild);
- if( rc==SQLITE_OK ){
- rc = removeNode(pRtree, pChild, pRtree->iDepth-1);
- }
- rc2 = nodeRelease(pRtree, pChild);
- if( rc==SQLITE_OK ) rc = rc2;
- if( rc==SQLITE_OK ){
- pRtree->iDepth--;
- writeInt16(pRoot->zData, pRtree->iDepth);
- pRoot->isDirty = 1;
- }
- }
-
- /* Re-insert the contents of any underfull nodes removed from the tree. */
- for(pLeaf=pRtree->pDeleted; pLeaf; pLeaf=pRtree->pDeleted){
- if( rc==SQLITE_OK ){
- rc = reinsertNodeContent(pRtree, pLeaf);
- }
- pRtree->pDeleted = pLeaf->pNext;
- sqlite3_free(pLeaf);
- }
-
- /* Release the reference to the root node. */
- if( rc==SQLITE_OK ){
- rc = nodeRelease(pRtree, pRoot);
- }else{
- nodeRelease(pRtree, pRoot);
- }
- }
-
- /* If the azData[] array contains more than one element, elements
- ** (azData[2]..azData[argc-1]) contain a new record to insert into
- ** the r-tree structure.
- */
- if( rc==SQLITE_OK && nData>1 ){
- /* Insert a new record into the r-tree */
- RtreeCell cell;
+ if( nData>1 ){
int ii;
- RtreeNode *pLeaf;
/* Populate the cell.aCoord[] array. The first coordinate is azData[3]. */
assert( nData==(pRtree->nDim*2 + 3) );
@@ -121870,18 +132330,49 @@
}
}
- /* Figure out the rowid of the new row. */
- if( sqlite3_value_type(azData[2])==SQLITE_NULL ){
- rc = newRowid(pRtree, &cell.iRowid);
- }else{
+ /* If a rowid value was supplied, check if it is already present in
+ ** the table. If so, the constraint has failed. */
+ if( sqlite3_value_type(azData[2])!=SQLITE_NULL ){
cell.iRowid = sqlite3_value_int64(azData[2]);
- sqlite3_bind_int64(pRtree->pReadRowid, 1, cell.iRowid);
- if( SQLITE_ROW==sqlite3_step(pRtree->pReadRowid) ){
- sqlite3_reset(pRtree->pReadRowid);
- rc = SQLITE_CONSTRAINT;
- goto constraint;
+ if( sqlite3_value_type(azData[0])==SQLITE_NULL
+ || sqlite3_value_int64(azData[0])!=cell.iRowid
+ ){
+ int steprc;
+ sqlite3_bind_int64(pRtree->pReadRowid, 1, cell.iRowid);
+ steprc = sqlite3_step(pRtree->pReadRowid);
+ rc = sqlite3_reset(pRtree->pReadRowid);
+ if( SQLITE_ROW==steprc ){
+ if( sqlite3_vtab_on_conflict(pRtree->db)==SQLITE_REPLACE ){
+ rc = rtreeDeleteRowid(pRtree, cell.iRowid);
+ }else{
+ rc = SQLITE_CONSTRAINT;
+ goto constraint;
+ }
+ }
}
- rc = sqlite3_reset(pRtree->pReadRowid);
+ bHaveRowid = 1;
+ }
+ }
+
+ /* If azData[0] is not an SQL NULL value, it is the rowid of a
+ ** record to delete from the r-tree table. The following block does
+ ** just that.
+ */
+ if( sqlite3_value_type(azData[0])!=SQLITE_NULL ){
+ rc = rtreeDeleteRowid(pRtree, sqlite3_value_int64(azData[0]));
+ }
+
+ /* If the azData[] array contains more than one element, elements
+ ** (azData[2]..azData[argc-1]) contain a new record to insert into
+ ** the r-tree structure.
+ */
+ if( rc==SQLITE_OK && nData>1 ){
+ /* Insert the new record into the r-tree */
+ RtreeNode *pLeaf;
+
+ /* Figure out the rowid of the new row. */
+ if( bHaveRowid==0 ){
+ rc = newRowid(pRtree, &cell.iRowid);
}
*pRowid = cell.iRowid;
@@ -121926,7 +132417,7 @@
}
static sqlite3_module rtreeModule = {
- 0, /* iVersion */
+ 0, /* iVersion */
rtreeCreate, /* xCreate - create a table */
rtreeConnect, /* xConnect - connect to an existing table */
rtreeBestIndex, /* xBestIndex - Determine search strategy */
@@ -121945,7 +132436,10 @@
0, /* xCommit - commit transaction */
0, /* xRollback - rollback transaction */
0, /* xFindFunction - function overloading */
- rtreeRename /* xRename - rename the table */
+ rtreeRename, /* xRename - rename the table */
+ 0, /* xSavepoint */
+ 0, /* xRelease */
+ 0 /* xRollbackTo */
};
static int rtreeSqlInit(
@@ -122065,7 +132559,7 @@
int rc;
char *zSql;
if( isCreate ){
- int iPageSize;
+ int iPageSize = 0;
zSql = sqlite3_mprintf("PRAGMA %Q.page_size", pRtree->zDb);
rc = getIntFromStmt(db, zSql, &iPageSize);
if( rc==SQLITE_OK ){
@@ -122122,6 +132616,8 @@
return SQLITE_ERROR;
}
+ sqlite3_vtab_config(db, SQLITE_VTAB_CONSTRAINT_SUPPORT, 1);
+
/* Allocate the sqlite3_vtab structure */
nDb = strlen(argv[1]);
nName = strlen(argv[2]);
@@ -122218,7 +132714,7 @@
int jj;
nodeGetCell(&tree, &node, ii, &cell);
- sqlite3_snprintf(512-nCell,&zCell[nCell],"%d", cell.iRowid);
+ sqlite3_snprintf(512-nCell,&zCell[nCell],"%lld", cell.iRowid);
nCell = strlen(zCell);
for(jj=0; jj<tree.nDim*2; jj++){
sqlite3_snprintf(512-nCell,&zCell[nCell]," %f",(double)cell.aCoord[jj].f);
@@ -122391,6 +132887,7 @@
#include <unicode/ustring.h>
#include <unicode/ucol.h>
+/* #include <assert.h> */
#ifndef SQLITE_CORE
SQLITE_EXTENSION_INIT1
@@ -122599,6 +133096,8 @@
UBool res;
const UChar *zString = sqlite3_value_text16(apArg[1]);
+ (void)nArg; /* Unused parameter */
+
/* If the left hand side of the regexp operator is NULL,
** then the result is also NULL.
*/
@@ -122827,7 +133326,7 @@
int rc = SQLITE_OK;
int i;
- for(i=0; rc==SQLITE_OK && i<(sizeof(scalars)/sizeof(struct IcuScalar)); i++){
+ for(i=0; rc==SQLITE_OK && i<(int)(sizeof(scalars)/sizeof(scalars[0])); i++){
struct IcuScalar *p = &scalars[i];
rc = sqlite3_create_function(
db, p->zName, p->nArg, p->enc, p->pContext, p->xFunc, 0, 0
@@ -122864,15 +133363,16 @@
**
*************************************************************************
** This file implements a tokenizer for fts3 based on the ICU library.
-**
-** $Id: fts3_icu.c,v 1.3 2008/09/01 18:34:20 danielk1977 Exp $
*/
-
#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
#ifdef SQLITE_ENABLE_ICU
+/* #include <assert.h> */
+/* #include <string.h> */
#include <unicode/ubrk.h>
+/* #include <unicode/ucol.h> */
+/* #include <unicode/ustring.h> */
#include <unicode/utf16.h>
typedef struct IcuTokenizer IcuTokenizer;
diff --git a/dist/sqlite3.h b/dist/sqlite3.h
index a39c018..fc9cd07 100644
--- a/dist/sqlite3.h
+++ b/dist/sqlite3.h
@@ -107,9 +107,9 @@
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
-#define SQLITE_VERSION "3.7.4"
-#define SQLITE_VERSION_NUMBER 3007004
-#define SQLITE_SOURCE_ID "2011-02-23 14:33:31 8609a15dfad23a7c5311b52617d5c4818c0b8d1e"
+#define SQLITE_VERSION "3.7.10"
+#define SQLITE_VERSION_NUMBER 3007010
+#define SQLITE_SOURCE_ID "2012-01-16 13:28:40 ebd01a8deffb5024a5d7494eef800d2366d97204"
/*
** CAPI3REF: Run-Time Library Version Numbers
@@ -177,7 +177,7 @@
** CAPI3REF: Test To See If The Library Is Threadsafe
**
** ^The sqlite3_threadsafe() function returns zero if and only if
-** SQLite was compiled mutexing code omitted due to the
+** SQLite was compiled with mutexing code omitted due to the
** [SQLITE_THREADSAFE] compile-time option being set to 0.
**
** SQLite can be compiled with or without mutexes. When
@@ -310,7 +310,7 @@
** argument. ^If the callback function of the 3rd argument to
** sqlite3_exec() is not NULL, then it is invoked for each result row
** coming out of the evaluated SQL statements. ^The 4th argument to
-** to sqlite3_exec() is relayed through to the 1st argument of each
+** sqlite3_exec() is relayed through to the 1st argument of each
** callback invocation. ^If the callback pointer to sqlite3_exec()
** is NULL, then no callback is ever invoked and result rows are
** ignored.
@@ -371,11 +371,12 @@
** KEYWORDS: {result code} {result codes}
**
** Many SQLite functions return an integer result code from the set shown
-** here in order to indicates success or failure.
+** here in order to indicate success or failure.
**
** New error codes may be added in future versions of SQLite.
**
-** See also: [SQLITE_IOERR_READ | extended result codes]
+** See also: [SQLITE_IOERR_READ | extended result codes],
+** [sqlite3_vtab_on_conflict()] [SQLITE_ROLLBACK | result codes].
*/
#define SQLITE_OK 0 /* Successful result */
/* beginning-of-error-codes */
@@ -390,7 +391,7 @@
#define SQLITE_INTERRUPT 9 /* Operation terminated by sqlite3_interrupt()*/
#define SQLITE_IOERR 10 /* Some kind of disk I/O error occurred */
#define SQLITE_CORRUPT 11 /* The database disk image is malformed */
-#define SQLITE_NOTFOUND 12 /* NOT USED. Table or record not found */
+#define SQLITE_NOTFOUND 12 /* Unknown opcode in sqlite3_file_control() */
#define SQLITE_FULL 13 /* Insertion failed because database is full */
#define SQLITE_CANTOPEN 14 /* Unable to open the database file */
#define SQLITE_PROTOCOL 15 /* Database lock protocol error */
@@ -405,9 +406,6 @@
#define SQLITE_FORMAT 24 /* Auxiliary database format error */
#define SQLITE_RANGE 25 /* 2nd parameter to sqlite3_bind out of range */
#define SQLITE_NOTADB 26 /* File opened that is not a database file */
-// Begin Android Add
-#define SQLITE_UNCLOSED 27 /* db can't be closed due unfinalized stmts */
-// End Android Add
#define SQLITE_ROW 100 /* sqlite3_step() has another row ready */
#define SQLITE_DONE 101 /* sqlite3_step() has finished executing */
/* end-of-error-codes */
@@ -455,17 +453,21 @@
#define SQLITE_IOERR_SHMOPEN (SQLITE_IOERR | (18<<8))
#define SQLITE_IOERR_SHMSIZE (SQLITE_IOERR | (19<<8))
#define SQLITE_IOERR_SHMLOCK (SQLITE_IOERR | (20<<8))
+#define SQLITE_IOERR_SHMMAP (SQLITE_IOERR | (21<<8))
+#define SQLITE_IOERR_SEEK (SQLITE_IOERR | (22<<8))
#define SQLITE_LOCKED_SHAREDCACHE (SQLITE_LOCKED | (1<<8))
#define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8))
#define SQLITE_CANTOPEN_NOTEMPDIR (SQLITE_CANTOPEN | (1<<8))
+#define SQLITE_CORRUPT_VTAB (SQLITE_CORRUPT | (1<<8))
+#define SQLITE_READONLY_RECOVERY (SQLITE_READONLY | (1<<8))
+#define SQLITE_READONLY_CANTLOCK (SQLITE_READONLY | (2<<8))
/*
** CAPI3REF: Flags For File Open Operations
**
** These bit values are intended for use in the
** 3rd parameter to the [sqlite3_open_v2()] interface and
-** in the 4th parameter to the xOpen method of the
-** [sqlite3_vfs] object.
+** in the 4th parameter to the [sqlite3_vfs.xOpen] method.
*/
#define SQLITE_OPEN_READONLY 0x00000001 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_READWRITE 0x00000002 /* Ok for sqlite3_open_v2() */
@@ -473,6 +475,7 @@
#define SQLITE_OPEN_DELETEONCLOSE 0x00000008 /* VFS only */
#define SQLITE_OPEN_EXCLUSIVE 0x00000010 /* VFS only */
#define SQLITE_OPEN_AUTOPROXY 0x00000020 /* VFS only */
+#define SQLITE_OPEN_URI 0x00000040 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_MAIN_DB 0x00000100 /* VFS only */
#define SQLITE_OPEN_TEMP_DB 0x00000200 /* VFS only */
#define SQLITE_OPEN_TRANSIENT_DB 0x00000400 /* VFS only */
@@ -486,6 +489,8 @@
#define SQLITE_OPEN_PRIVATECACHE 0x00040000 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_WAL 0x00080000 /* VFS only */
+/* Reserved: 0x00F00000 */
+
/*
** CAPI3REF: Device Characteristics
**
@@ -504,7 +509,11 @@
** first then the size of the file is extended, never the other
** way around. The SQLITE_IOCAP_SEQUENTIAL property means that
** information is written to disk in the same order as calls
-** to xWrite().
+** to xWrite(). The SQLITE_IOCAP_POWERSAFE_OVERWRITE property means that
+** after reboot following a crash or power loss, the only bytes in a
+** file that were written at the application level might have changed
+** and that adjacent bytes, even bytes within the same sector are
+** guaranteed to be unchanged.
*/
#define SQLITE_IOCAP_ATOMIC 0x00000001
#define SQLITE_IOCAP_ATOMIC512 0x00000002
@@ -518,6 +527,7 @@
#define SQLITE_IOCAP_SAFE_APPEND 0x00000200
#define SQLITE_IOCAP_SEQUENTIAL 0x00000400
#define SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN 0x00000800
+#define SQLITE_IOCAP_POWERSAFE_OVERWRITE 0x00001000
/*
** CAPI3REF: File Locking Levels
@@ -581,17 +591,18 @@
/*
** CAPI3REF: OS Interface File Virtual Methods Object
**
-** Every file opened by the [sqlite3_vfs] xOpen method populates an
+** Every file opened by the [sqlite3_vfs.xOpen] method populates an
** [sqlite3_file] object (or, more commonly, a subclass of the
** [sqlite3_file] object) with a pointer to an instance of this object.
** This object defines the methods used to perform various operations
** against the open file represented by the [sqlite3_file] object.
**
-** If the xOpen method sets the sqlite3_file.pMethods element
+** If the [sqlite3_vfs.xOpen] method sets the sqlite3_file.pMethods element
** to a non-NULL pointer, then the sqlite3_io_methods.xClose method
-** may be invoked even if the xOpen reported that it failed. The
-** only way to prevent a call to xClose following a failed xOpen
-** is for the xOpen to set the sqlite3_file.pMethods element to NULL.
+** may be invoked even if the [sqlite3_vfs.xOpen] reported that it failed. The
+** only way to prevent a call to xClose following a failed [sqlite3_vfs.xOpen]
+** is for the [sqlite3_vfs.xOpen] to set the sqlite3_file.pMethods element
+** to NULL.
**
** The flags argument to xSync may be one of [SQLITE_SYNC_NORMAL] or
** [SQLITE_SYNC_FULL]. The first choice is the normal fsync().
@@ -625,7 +636,9 @@
** core reserves all opcodes less than 100 for its own use.
** A [SQLITE_FCNTL_LOCKSTATE | list of opcodes] less than 100 is available.
** Applications that define a custom xFileControl method should use opcodes
-** greater than 100 to avoid conflicts.
+** greater than 100 to avoid conflicts. VFS implementations should
+** return [SQLITE_NOTFOUND] for file control opcodes that they do not
+** recognize.
**
** The xSectorSize() method returns the sector size of the
** device that underlies the file. The sector size is the
@@ -718,15 +731,90 @@
** for the nominated database. Allocating database file space in large
** chunks (say 1MB at a time), may reduce file-system fragmentation and
** improve performance on some systems.
+**
+** The [SQLITE_FCNTL_FILE_POINTER] opcode is used to obtain a pointer
+** to the [sqlite3_file] object associated with a particular database
+** connection. See the [sqlite3_file_control()] documentation for
+** additional information.
+**
+** ^(The [SQLITE_FCNTL_SYNC_OMITTED] opcode is generated internally by
+** SQLite and sent to all VFSes in place of a call to the xSync method
+** when the database connection has [PRAGMA synchronous] set to OFF.)^
+** Some specialized VFSes need this signal in order to operate correctly
+** when [PRAGMA synchronous | PRAGMA synchronous=OFF] is set, but most
+** VFSes do not need this signal and should silently ignore this opcode.
+** Applications should not call [sqlite3_file_control()] with this
+** opcode as doing so may disrupt the operation of the specialized VFSes
+** that do require it.
+**
+** ^The [SQLITE_FCNTL_WIN32_AV_RETRY] opcode is used to configure automatic
+** retry counts and intervals for certain disk I/O operations for the
+** windows [VFS] in order to provide robustness in the presence of
+** anti-virus programs. By default, the windows VFS will retry file read,
+** file write, and file delete operations up to 10 times, with a delay
+** of 25 milliseconds before the first retry and with the delay increasing
+** by an additional 25 milliseconds with each subsequent retry. This
+** opcode allows these two values (10 retries and 25 milliseconds of delay)
+** to be adjusted. The values are changed for all database connections
+** within the same process. The argument is a pointer to an array of two
+** integers where the first integer i the new retry count and the second
+** integer is the delay. If either integer is negative, then the setting
+** is not changed but instead the prior value of that setting is written
+** into the array entry, allowing the current retry settings to be
+** interrogated. The zDbName parameter is ignored.
+**
+** ^The [SQLITE_FCNTL_PERSIST_WAL] opcode is used to set or query the
+** persistent [WAL | Write AHead Log] setting. By default, the auxiliary
+** write ahead log and shared memory files used for transaction control
+** are automatically deleted when the latest connection to the database
+** closes. Setting persistent WAL mode causes those files to persist after
+** close. Persisting the files is useful when other processes that do not
+** have write permission on the directory containing the database file want
+** to read the database file, as the WAL and shared memory files must exist
+** in order for the database to be readable. The fourth parameter to
+** [sqlite3_file_control()] for this opcode should be a pointer to an integer.
+** That integer is 0 to disable persistent WAL mode or 1 to enable persistent
+** WAL mode. If the integer is -1, then it is overwritten with the current
+** WAL persistence setting.
+**
+** ^The [SQLITE_FCNTL_POWERSAFE_OVERWRITE] opcode is used to set or query the
+** persistent "powersafe-overwrite" or "PSOW" setting. The PSOW setting
+** determines the [SQLITE_IOCAP_POWERSAFE_OVERWRITE] bit of the
+** xDeviceCharacteristics methods. The fourth parameter to
+** [sqlite3_file_control()] for this opcode should be a pointer to an integer.
+** That integer is 0 to disable zero-damage mode or 1 to enable zero-damage
+** mode. If the integer is -1, then it is overwritten with the current
+** zero-damage mode setting.
+**
+** ^The [SQLITE_FCNTL_OVERWRITE] opcode is invoked by SQLite after opening
+** a write transaction to indicate that, unless it is rolled back for some
+** reason, the entire database file will be overwritten by the current
+** transaction. This is used by VACUUM operations.
+**
+** ^The [SQLITE_FCNTL_VFSNAME] opcode can be used to obtain the names of
+** all [VFSes] in the VFS stack. The names are of all VFS shims and the
+** final bottom-level VFS are written into memory obtained from
+** [sqlite3_malloc()] and the result is stored in the char* variable
+** that the fourth parameter of [sqlite3_file_control()] points to.
+** The caller is responsible for freeing the memory when done. As with
+** all file-control actions, there is no guarantee that this will actually
+** do anything. Callers should initialize the char* variable to a NULL
+** pointer in case this file-control is not implemented. This file-control
+** is intended for diagnostic use only.
*/
-#define SQLITE_FCNTL_LOCKSTATE 1
-#define SQLITE_GET_LOCKPROXYFILE 2
-#define SQLITE_SET_LOCKPROXYFILE 3
-#define SQLITE_LAST_ERRNO 4
-#define SQLITE_FCNTL_SIZE_HINT 5
-#define SQLITE_FCNTL_CHUNK_SIZE 6
-#define SQLITE_FCNTL_FILE_POINTER 7
-
+#define SQLITE_FCNTL_LOCKSTATE 1
+#define SQLITE_GET_LOCKPROXYFILE 2
+#define SQLITE_SET_LOCKPROXYFILE 3
+#define SQLITE_LAST_ERRNO 4
+#define SQLITE_FCNTL_SIZE_HINT 5
+#define SQLITE_FCNTL_CHUNK_SIZE 6
+#define SQLITE_FCNTL_FILE_POINTER 7
+#define SQLITE_FCNTL_SYNC_OMITTED 8
+#define SQLITE_FCNTL_WIN32_AV_RETRY 9
+#define SQLITE_FCNTL_PERSIST_WAL 10
+#define SQLITE_FCNTL_OVERWRITE 11
+#define SQLITE_FCNTL_VFSNAME 12
+#define SQLITE_FCNTL_POWERSAFE_OVERWRITE 13
/*
** CAPI3REF: Mutex Handle
@@ -745,7 +833,8 @@
**
** An instance of the sqlite3_vfs object defines the interface between
** the SQLite core and the underlying operating system. The "vfs"
-** in the name of the object stands for "virtual file system".
+** in the name of the object stands for "virtual file system". See
+** the [VFS | VFS documentation] for further information.
**
** The value of the iVersion field is initially 1 but may be larger in
** future versions of SQLite. Additional fields may be appended to this
@@ -774,12 +863,13 @@
** The zName field holds the name of the VFS module. The name must
** be unique across all VFS modules.
**
+** [[sqlite3_vfs.xOpen]]
** ^SQLite guarantees that the zFilename parameter to xOpen
** is either a NULL pointer or string obtained
** from xFullPathname() with an optional suffix added.
** ^If a suffix is added to the zFilename parameter, it will
** consist of a single "-" character followed by no more than
-** 10 alphanumeric and/or "-" characters.
+** 11 alphanumeric and/or "-" characters.
** ^SQLite further guarantees that
** the string will be valid and unchanged until xClose() is
** called. Because of the previous sentence,
@@ -851,6 +941,7 @@
** element will be valid after xOpen returns regardless of the success
** or failure of the xOpen call.
**
+** [[sqlite3_vfs.xAccess]]
** ^The flags argument to xAccess() may be [SQLITE_ACCESS_EXISTS]
** to test for the existence of a file, or [SQLITE_ACCESS_READWRITE] to
** test whether a file is readable and writable, or [SQLITE_ACCESS_READ]
@@ -875,16 +966,29 @@
** method returns a Julian Day Number for the current date and time as
** a floating point value.
** ^The xCurrentTimeInt64() method returns, as an integer, the Julian
-** Day Number multipled by 86400000 (the number of milliseconds in
+** Day Number multiplied by 86400000 (the number of milliseconds in
** a 24-hour day).
** ^SQLite will use the xCurrentTimeInt64() method to get the current
** date and time if that method is available (if iVersion is 2 or
** greater and the function pointer is not NULL) and will fall back
** to xCurrentTime() if xCurrentTimeInt64() is unavailable.
+**
+** ^The xSetSystemCall(), xGetSystemCall(), and xNestSystemCall() interfaces
+** are not used by the SQLite core. These optional interfaces are provided
+** by some VFSes to facilitate testing of the VFS code. By overriding
+** system calls with functions under its control, a test program can
+** simulate faults and error conditions that would otherwise be difficult
+** or impossible to induce. The set of system calls that can be overridden
+** varies from one VFS to another, and from one version of the same VFS to the
+** next. Applications that use these interfaces must be prepared for any
+** or all of these interfaces to be NULL or for their behavior to change
+** from one release to the next. Applications must not attempt to access
+** any of these methods if the iVersion of the VFS is less than 3.
*/
typedef struct sqlite3_vfs sqlite3_vfs;
+typedef void (*sqlite3_syscall_ptr)(void);
struct sqlite3_vfs {
- int iVersion; /* Structure version number (currently 2) */
+ int iVersion; /* Structure version number (currently 3) */
int szOsFile; /* Size of subclassed sqlite3_file */
int mxPathname; /* Maximum file pathname length */
sqlite3_vfs *pNext; /* Next registered VFS */
@@ -910,6 +1014,13 @@
int (*xCurrentTimeInt64)(sqlite3_vfs*, sqlite3_int64*);
/*
** The methods above are in versions 1 and 2 of the sqlite_vfs object.
+ ** Those below are for version 3 and greater.
+ */
+ int (*xSetSystemCall)(sqlite3_vfs*, const char *zName, sqlite3_syscall_ptr);
+ sqlite3_syscall_ptr (*xGetSystemCall)(sqlite3_vfs*, const char *zName);
+ const char *(*xNextSystemCall)(sqlite3_vfs*, const char *zName);
+ /*
+ ** The methods above are in versions 1 through 3 of the sqlite_vfs object.
** New fields may be appended in figure versions. The iVersion
** value will increment whenever this happens.
*/
@@ -1077,9 +1188,9 @@
** implementation of an application-defined [sqlite3_os_init()].
**
** The first argument to sqlite3_config() is an integer
-** [SQLITE_CONFIG_SINGLETHREAD | configuration option] that determines
+** [configuration option] that determines
** what property of SQLite is to be configured. Subsequent arguments
-** vary depending on the [SQLITE_CONFIG_SINGLETHREAD | configuration option]
+** vary depending on the [configuration option]
** in the first argument.
**
** ^When a configuration option is set, sqlite3_config() returns [SQLITE_OK].
@@ -1094,17 +1205,12 @@
** The sqlite3_db_config() interface is used to make configuration
** changes to a [database connection]. The interface is similar to
** [sqlite3_config()] except that the changes apply to a single
-** [database connection] (specified in the first argument). The
-** sqlite3_db_config() interface should only be used immediately after
-** the database connection is created using [sqlite3_open()],
-** [sqlite3_open16()], or [sqlite3_open_v2()].
+** [database connection] (specified in the first argument).
**
** The second argument to sqlite3_db_config(D,V,...) is the
-** configuration verb - an integer code that indicates what
-** aspect of the [database connection] is being configured.
-** The only choice for this value is [SQLITE_DBCONFIG_LOOKASIDE].
-** New verbs are likely to be added in future releases of SQLite.
-** Additional arguments depend on the verb.
+** [SQLITE_DBCONFIG_LOOKASIDE | configuration verb] - an integer code
+** that indicates what aspect of the [database connection] is being configured.
+** Subsequent arguments vary depending on the configuration verb.
**
** ^Calls to sqlite3_db_config() return SQLITE_OK if and only if
** the call is considered successful.
@@ -1136,16 +1242,10 @@
** order to verify that SQLite recovers gracefully from such
** conditions.
**
-** The xMalloc and xFree methods must work like the
-** malloc() and free() functions from the standard C library.
-** The xRealloc method must work like realloc() from the standard C library
-** with the exception that if the second argument to xRealloc is zero,
-** xRealloc must be a no-op - it must not perform any allocation or
-** deallocation. ^SQLite guarantees that the second argument to
+** The xMalloc, xRealloc, and xFree methods must work like the
+** malloc(), realloc() and free() functions from the standard C library.
+** ^SQLite guarantees that the second argument to
** xRealloc is always a value returned by a prior call to xRoundup.
-** And so in cases where xRoundup always returns a positive number,
-** xRealloc can perform exactly as the standard library realloc() and
-** still be in compliance with this specification.
**
** xSize should return the allocated size of a memory allocation
** previously obtained from xMalloc or xRealloc. The allocated size
@@ -1194,6 +1294,7 @@
/*
** CAPI3REF: Configuration Options
+** KEYWORDS: {configuration option}
**
** These constants are the available integer configuration options that
** can be passed as the first argument to the [sqlite3_config()] interface.
@@ -1206,7 +1307,7 @@
** is invoked.
**
** <dl>
-** <dt>SQLITE_CONFIG_SINGLETHREAD</dt>
+** [[SQLITE_CONFIG_SINGLETHREAD]] <dt>SQLITE_CONFIG_SINGLETHREAD</dt>
** <dd>There are no arguments to this option. ^This option sets the
** [threading mode] to Single-thread. In other words, it disables
** all mutexing and puts SQLite into a mode where it can only be used
@@ -1217,7 +1318,7 @@
** [SQLITE_ERROR] if called with the SQLITE_CONFIG_SINGLETHREAD
** configuration option.</dd>
**
-** <dt>SQLITE_CONFIG_MULTITHREAD</dt>
+** [[SQLITE_CONFIG_MULTITHREAD]] <dt>SQLITE_CONFIG_MULTITHREAD</dt>
** <dd>There are no arguments to this option. ^This option sets the
** [threading mode] to Multi-thread. In other words, it disables
** mutexing on [database connection] and [prepared statement] objects.
@@ -1231,7 +1332,7 @@
** [sqlite3_config()] will return [SQLITE_ERROR] if called with the
** SQLITE_CONFIG_MULTITHREAD configuration option.</dd>
**
-** <dt>SQLITE_CONFIG_SERIALIZED</dt>
+** [[SQLITE_CONFIG_SERIALIZED]] <dt>SQLITE_CONFIG_SERIALIZED</dt>
** <dd>There are no arguments to this option. ^This option sets the
** [threading mode] to Serialized. In other words, this option enables
** all mutexes including the recursive
@@ -1247,7 +1348,7 @@
** [sqlite3_config()] will return [SQLITE_ERROR] if called with the
** SQLITE_CONFIG_SERIALIZED configuration option.</dd>
**
-** <dt>SQLITE_CONFIG_MALLOC</dt>
+** [[SQLITE_CONFIG_MALLOC]] <dt>SQLITE_CONFIG_MALLOC</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mem_methods] structure. The argument specifies
** alternative low-level memory allocation routines to be used in place of
@@ -1255,7 +1356,7 @@
** its own private copy of the content of the [sqlite3_mem_methods] structure
** before the [sqlite3_config()] call returns.</dd>
**
-** <dt>SQLITE_CONFIG_GETMALLOC</dt>
+** [[SQLITE_CONFIG_GETMALLOC]] <dt>SQLITE_CONFIG_GETMALLOC</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mem_methods] structure. The [sqlite3_mem_methods]
** structure is filled with the currently defined memory allocation routines.)^
@@ -1263,7 +1364,7 @@
** routines with a wrapper that simulations memory allocation failure or
** tracks memory usage, for example. </dd>
**
-** <dt>SQLITE_CONFIG_MEMSTATUS</dt>
+** [[SQLITE_CONFIG_MEMSTATUS]] <dt>SQLITE_CONFIG_MEMSTATUS</dt>
** <dd> ^This option takes single argument of type int, interpreted as a
** boolean, which enables or disables the collection of memory allocation
** statistics. ^(When memory allocation statistics are disabled, the
@@ -1279,10 +1380,10 @@
** allocation statistics are disabled by default.
** </dd>
**
-** <dt>SQLITE_CONFIG_SCRATCH</dt>
+** [[SQLITE_CONFIG_SCRATCH]] <dt>SQLITE_CONFIG_SCRATCH</dt>
** <dd> ^This option specifies a static memory buffer that SQLite can use for
** scratch memory. There are three arguments: A pointer an 8-byte
-** aligned memory buffer from which the scrach allocations will be
+** aligned memory buffer from which the scratch allocations will be
** drawn, the size of each scratch allocation (sz),
** and the maximum number of scratch allocations (N). The sz
** argument must be a multiple of 16.
@@ -1295,11 +1396,11 @@
** scratch memory beyond what is provided by this configuration option, then
** [sqlite3_malloc()] will be used to obtain the memory needed.</dd>
**
-** <dt>SQLITE_CONFIG_PAGECACHE</dt>
+** [[SQLITE_CONFIG_PAGECACHE]] <dt>SQLITE_CONFIG_PAGECACHE</dt>
** <dd> ^This option specifies a static memory buffer that SQLite can use for
-** the database page cache with the default page cache implemenation.
+** the database page cache with the default page cache implementation.
** This configuration should not be used if an application-define page
-** cache implementation is loaded using the SQLITE_CONFIG_PCACHE option.
+** cache implementation is loaded using the SQLITE_CONFIG_PCACHE2 option.
** There are three arguments to this option: A pointer to 8-byte aligned
** memory, the size of each page buffer (sz), and the number of pages (N).
** The sz argument should be the size of the largest database page
@@ -1316,7 +1417,7 @@
** be aligned to an 8-byte boundary or subsequent behavior of SQLite
** will be undefined.</dd>
**
-** <dt>SQLITE_CONFIG_HEAP</dt>
+** [[SQLITE_CONFIG_HEAP]] <dt>SQLITE_CONFIG_HEAP</dt>
** <dd> ^This option specifies a static memory buffer that SQLite will use
** for all of its dynamic memory allocation needs beyond those provided
** for by [SQLITE_CONFIG_SCRATCH] and [SQLITE_CONFIG_PAGECACHE].
@@ -1329,9 +1430,11 @@
** [SQLITE_ENABLE_MEMSYS5] are defined, then the alternative memory
** allocator is engaged to handle all of SQLites memory allocation needs.
** The first pointer (the memory pointer) must be aligned to an 8-byte
-** boundary or subsequent behavior of SQLite will be undefined.</dd>
+** boundary or subsequent behavior of SQLite will be undefined.
+** The minimum allocation size is capped at 2**12. Reasonable values
+** for the minimum allocation size are 2**5 through 2**8.</dd>
**
-** <dt>SQLITE_CONFIG_MUTEX</dt>
+** [[SQLITE_CONFIG_MUTEX]] <dt>SQLITE_CONFIG_MUTEX</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mutex_methods] structure. The argument specifies
** alternative low-level mutex routines to be used in place
@@ -1343,7 +1446,7 @@
** [sqlite3_config()] with the SQLITE_CONFIG_MUTEX configuration option will
** return [SQLITE_ERROR].</dd>
**
-** <dt>SQLITE_CONFIG_GETMUTEX</dt>
+** [[SQLITE_CONFIG_GETMUTEX]] <dt>SQLITE_CONFIG_GETMUTEX</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mutex_methods] structure. The
** [sqlite3_mutex_methods]
@@ -1356,7 +1459,7 @@
** [sqlite3_config()] with the SQLITE_CONFIG_GETMUTEX configuration option will
** return [SQLITE_ERROR].</dd>
**
-** <dt>SQLITE_CONFIG_LOOKASIDE</dt>
+** [[SQLITE_CONFIG_LOOKASIDE]] <dt>SQLITE_CONFIG_LOOKASIDE</dt>
** <dd> ^(This option takes two arguments that determine the default
** memory allocation for the lookaside memory allocator on each
** [database connection]. The first argument is the
@@ -1366,18 +1469,18 @@
** verb to [sqlite3_db_config()] can be used to change the lookaside
** configuration on individual connections.)^ </dd>
**
-** <dt>SQLITE_CONFIG_PCACHE</dt>
+** [[SQLITE_CONFIG_PCACHE2]] <dt>SQLITE_CONFIG_PCACHE2</dt>
** <dd> ^(This option takes a single argument which is a pointer to
-** an [sqlite3_pcache_methods] object. This object specifies the interface
+** an [sqlite3_pcache_methods2] object. This object specifies the interface
** to a custom page cache implementation.)^ ^SQLite makes a copy of the
** object and uses it for page cache memory allocations.</dd>
**
-** <dt>SQLITE_CONFIG_GETPCACHE</dt>
+** [[SQLITE_CONFIG_GETPCACHE2]] <dt>SQLITE_CONFIG_GETPCACHE2</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
-** [sqlite3_pcache_methods] object. SQLite copies of the current
+** [sqlite3_pcache_methods2] object. SQLite copies of the current
** page cache implementation into that object.)^ </dd>
**
-** <dt>SQLITE_CONFIG_LOG</dt>
+** [[SQLITE_CONFIG_LOG]] <dt>SQLITE_CONFIG_LOG</dt>
** <dd> ^The SQLITE_CONFIG_LOG option takes two arguments: a pointer to a
** function with a call signature of void(*)(void*,int,const char*),
** and a pointer to void. ^If the function pointer is not NULL, it is
@@ -1395,6 +1498,23 @@
** In a multi-threaded application, the application-defined logger
** function must be threadsafe. </dd>
**
+** [[SQLITE_CONFIG_URI]] <dt>SQLITE_CONFIG_URI
+** <dd> This option takes a single argument of type int. If non-zero, then
+** URI handling is globally enabled. If the parameter is zero, then URI handling
+** is globally disabled. If URI handling is globally enabled, all filenames
+** passed to [sqlite3_open()], [sqlite3_open_v2()], [sqlite3_open16()] or
+** specified as part of [ATTACH] commands are interpreted as URIs, regardless
+** of whether or not the [SQLITE_OPEN_URI] flag is set when the database
+** connection is opened. If it is globally disabled, filenames are
+** only interpreted as URIs if the SQLITE_OPEN_URI flag is set when the
+** database connection is opened. By default, URI handling is globally
+** disabled. The default value may be changed by compiling with the
+** [SQLITE_USE_URI] symbol defined.
+**
+** [[SQLITE_CONFIG_PCACHE]] [[SQLITE_CONFIG_GETPCACHE]]
+** <dt>SQLITE_CONFIG_PCACHE and SQLITE_CONFNIG_GETPCACHE
+** <dd> These options are obsolete and should not be used by new code.
+** They are retained for backwards compatibility but are now no-ops.
** </dl>
*/
#define SQLITE_CONFIG_SINGLETHREAD 1 /* nil */
@@ -1410,9 +1530,12 @@
#define SQLITE_CONFIG_GETMUTEX 11 /* sqlite3_mutex_methods* */
/* previously SQLITE_CONFIG_CHUNKALLOC 12 which is now unused. */
#define SQLITE_CONFIG_LOOKASIDE 13 /* int int */
-#define SQLITE_CONFIG_PCACHE 14 /* sqlite3_pcache_methods* */
-#define SQLITE_CONFIG_GETPCACHE 15 /* sqlite3_pcache_methods* */
+#define SQLITE_CONFIG_PCACHE 14 /* no-op */
+#define SQLITE_CONFIG_GETPCACHE 15 /* no-op */
#define SQLITE_CONFIG_LOG 16 /* xFunc, void* */
+#define SQLITE_CONFIG_URI 17 /* int */
+#define SQLITE_CONFIG_PCACHE2 18 /* sqlite3_pcache_methods2* */
+#define SQLITE_CONFIG_GETPCACHE2 19 /* sqlite3_pcache_methods2* */
/*
** CAPI3REF: Database Connection Configuration Options
@@ -1432,7 +1555,7 @@
** <dd> ^This option takes three additional arguments that determine the
** [lookaside memory allocator] configuration for the [database connection].
** ^The first argument (the third parameter to [sqlite3_db_config()] is a
-** pointer to an memory buffer to use for lookaside memory.
+** pointer to a memory buffer to use for lookaside memory.
** ^The first argument after the SQLITE_DBCONFIG_LOOKASIDE verb
** may be NULL in which case SQLite will allocate the
** lookaside buffer itself using [sqlite3_malloc()]. ^The second argument is the
@@ -1450,9 +1573,31 @@
** memory is in use leaves the configuration unchanged and returns
** [SQLITE_BUSY].)^</dd>
**
+** <dt>SQLITE_DBCONFIG_ENABLE_FKEY</dt>
+** <dd> ^This option is used to enable or disable the enforcement of
+** [foreign key constraints]. There should be two additional arguments.
+** The first argument is an integer which is 0 to disable FK enforcement,
+** positive to enable FK enforcement or negative to leave FK enforcement
+** unchanged. The second parameter is a pointer to an integer into which
+** is written 0 or 1 to indicate whether FK enforcement is off or on
+** following this call. The second parameter may be a NULL pointer, in
+** which case the FK enforcement setting is not reported back. </dd>
+**
+** <dt>SQLITE_DBCONFIG_ENABLE_TRIGGER</dt>
+** <dd> ^This option is used to enable or disable [CREATE TRIGGER | triggers].
+** There should be two additional arguments.
+** The first argument is an integer which is 0 to disable triggers,
+** positive to enable triggers or negative to leave the setting unchanged.
+** The second parameter is a pointer to an integer into which
+** is written 0 or 1 to indicate whether triggers are disabled or enabled
+** following this call. The second parameter may be a NULL pointer, in
+** which case the trigger setting is not reported back. </dd>
+**
** </dl>
*/
-#define SQLITE_DBCONFIG_LOOKASIDE 1001 /* void* int int */
+#define SQLITE_DBCONFIG_LOOKASIDE 1001 /* void* int int */
+#define SQLITE_DBCONFIG_ENABLE_FKEY 1002 /* int int* */
+#define SQLITE_DBCONFIG_ENABLE_TRIGGER 1003 /* int int* */
/*
@@ -1476,13 +1621,17 @@
**
** ^This routine returns the [rowid] of the most recent
** successful [INSERT] into the database from the [database connection]
-** in the first argument. ^If no successful [INSERT]s
+** in the first argument. ^As of SQLite version 3.7.7, this routines
+** records the last insert rowid of both ordinary tables and [virtual tables].
+** ^If no successful [INSERT]s
** have ever occurred on that database connection, zero is returned.
**
-** ^(If an [INSERT] occurs within a trigger, then the [rowid] of the inserted
-** row is returned by this routine as long as the trigger is running.
-** But once the trigger terminates, the value returned by this routine
-** reverts to the last value inserted before the trigger fired.)^
+** ^(If an [INSERT] occurs within a trigger or within a [virtual table]
+** method, then this routine will return the [rowid] of the inserted
+** row as long as the trigger or virtual table method is running.
+** But once the trigger or virtual table method ends, the value returned
+** by this routine reverts to what it was before the trigger or virtual
+** table method began.)^
**
** ^An [INSERT] that fails due to a constraint violation is not a
** successful [INSERT] and does not change the value returned by this
@@ -1845,7 +1994,7 @@
** NULL pointer if [sqlite3_malloc()] is unable to allocate enough
** memory to hold the resulting string.
**
-** ^(In sqlite3_snprintf() routine is similar to "snprintf()" from
+** ^(The sqlite3_snprintf() routine is similar to "snprintf()" from
** the standard C library. The result is written into the
** buffer supplied as the second parameter whose size is given by
** the first parameter. Note that the order of the
@@ -1864,12 +2013,14 @@
** the zero terminator. So the longest string that can be completely
** written will be n-1 characters.
**
+** ^The sqlite3_vsnprintf() routine is a varargs version of sqlite3_snprintf().
+**
** These routines all implement some additional formatting
** options that are useful for constructing SQL statements.
** All of the usual printf() formatting options apply. In addition, there
** is are "%q", "%Q", and "%z" options.
**
-** ^(The %q option works like %s in that it substitutes a null-terminated
+** ^(The %q option works like %s in that it substitutes a nul-terminated
** string from the argument list. But %q also doubles every '\'' character.
** %q is designed for use inside a string literal.)^ By doubling each '\''
** character it escapes that character and allows it to be inserted into
@@ -1927,6 +2078,7 @@
SQLITE_API char *sqlite3_mprintf(const char*,...);
SQLITE_API char *sqlite3_vmprintf(const char*, va_list);
SQLITE_API char *sqlite3_snprintf(int,char*,const char*, ...);
+SQLITE_API char *sqlite3_vsnprintf(int,char*,const char*, va_list);
/*
** CAPI3REF: Memory Allocation Subsystem
@@ -2051,7 +2203,7 @@
/*
** CAPI3REF: Compile-Time Authorization Callbacks
**
-** ^This routine registers a authorizer callback with a particular
+** ^This routine registers an authorizer callback with a particular
** [database connection], supplied in the first argument.
** ^The authorizer callback is invoked as SQL statements are being compiled
** by [sqlite3_prepare()] or its variants [sqlite3_prepare_v2()],
@@ -2142,6 +2294,9 @@
** to signal SQLite whether or not the action is permitted. See the
** [sqlite3_set_authorizer | authorizer documentation] for additional
** information.
+**
+** Note that SQLITE_IGNORE is also used as a [SQLITE_ROLLBACK | return code]
+** from the [sqlite3_vtab_on_conflict()] interface.
*/
#define SQLITE_DENY 1 /* Abort the SQL statement with an error */
#define SQLITE_IGNORE 2 /* Don't allow access, but don't generate an error */
@@ -2264,7 +2419,7 @@
/*
** CAPI3REF: Opening A New Database Connection
**
-** ^These routines open an SQLite database file whose name is given by the
+** ^These routines open an SQLite database file as specified by the
** filename argument. ^The filename argument is interpreted as UTF-8 for
** sqlite3_open() and sqlite3_open_v2() and as UTF-16 in the native byte
** order for sqlite3_open16(). ^(A [database connection] handle is usually
@@ -2291,7 +2446,7 @@
** sqlite3_open_v2() can take one of
** the following three values, optionally combined with the
** [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX], [SQLITE_OPEN_SHAREDCACHE],
-** and/or [SQLITE_OPEN_PRIVATECACHE] flags:)^
+** [SQLITE_OPEN_PRIVATECACHE], and/or [SQLITE_OPEN_URI] flags:)^
**
** <dl>
** ^(<dt>[SQLITE_OPEN_READONLY]</dt>
@@ -2304,15 +2459,14 @@
** case the database must already exist, otherwise an error is returned.</dd>)^
**
** ^(<dt>[SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]</dt>
-** <dd>The database is opened for reading and writing, and is creates it if
+** <dd>The database is opened for reading and writing, and is created if
** it does not already exist. This is the behavior that is always used for
** sqlite3_open() and sqlite3_open16().</dd>)^
** </dl>
**
** If the 3rd parameter to sqlite3_open_v2() is not one of the
-** combinations shown above or one of the combinations shown above combined
-** with the [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX],
-** [SQLITE_OPEN_SHAREDCACHE] and/or [SQLITE_OPEN_PRIVATECACHE] flags,
+** combinations shown above optionally combined with other
+** [SQLITE_OPEN_READONLY | SQLITE_OPEN_* bits]
** then the behavior is undefined.
**
** ^If the [SQLITE_OPEN_NOMUTEX] flag is set, then the database connection
@@ -2327,6 +2481,11 @@
** [SQLITE_OPEN_PRIVATECACHE] flag causes the database connection to not
** participate in [shared cache mode] even if it is enabled.
**
+** ^The fourth parameter to sqlite3_open_v2() is the name of the
+** [sqlite3_vfs] object that defines the operating system interface that
+** the new database connection should use. ^If the fourth parameter is
+** a NULL pointer then the default [sqlite3_vfs] object is used.
+**
** ^If the filename is ":memory:", then a private, temporary in-memory database
** is created for the connection. ^This in-memory database will vanish when
** the database connection is closed. Future versions of SQLite might
@@ -2339,10 +2498,111 @@
** on-disk database will be created. ^This private database will be
** automatically deleted as soon as the database connection is closed.
**
-** ^The fourth parameter to sqlite3_open_v2() is the name of the
-** [sqlite3_vfs] object that defines the operating system interface that
-** the new database connection should use. ^If the fourth parameter is
-** a NULL pointer then the default [sqlite3_vfs] object is used.
+** [[URI filenames in sqlite3_open()]] <h3>URI Filenames</h3>
+**
+** ^If [URI filename] interpretation is enabled, and the filename argument
+** begins with "file:", then the filename is interpreted as a URI. ^URI
+** filename interpretation is enabled if the [SQLITE_OPEN_URI] flag is
+** set in the fourth argument to sqlite3_open_v2(), or if it has
+** been enabled globally using the [SQLITE_CONFIG_URI] option with the
+** [sqlite3_config()] method or by the [SQLITE_USE_URI] compile-time option.
+** As of SQLite version 3.7.7, URI filename interpretation is turned off
+** by default, but future releases of SQLite might enable URI filename
+** interpretation by default. See "[URI filenames]" for additional
+** information.
+**
+** URI filenames are parsed according to RFC 3986. ^If the URI contains an
+** authority, then it must be either an empty string or the string
+** "localhost". ^If the authority is not an empty string or "localhost", an
+** error is returned to the caller. ^The fragment component of a URI, if
+** present, is ignored.
+**
+** ^SQLite uses the path component of the URI as the name of the disk file
+** which contains the database. ^If the path begins with a '/' character,
+** then it is interpreted as an absolute path. ^If the path does not begin
+** with a '/' (meaning that the authority section is omitted from the URI)
+** then the path is interpreted as a relative path.
+** ^On windows, the first component of an absolute path
+** is a drive specification (e.g. "C:").
+**
+** [[core URI query parameters]]
+** The query component of a URI may contain parameters that are interpreted
+** either by SQLite itself, or by a [VFS | custom VFS implementation].
+** SQLite interprets the following three query parameters:
+**
+** <ul>
+** <li> <b>vfs</b>: ^The "vfs" parameter may be used to specify the name of
+** a VFS object that provides the operating system interface that should
+** be used to access the database file on disk. ^If this option is set to
+** an empty string the default VFS object is used. ^Specifying an unknown
+** VFS is an error. ^If sqlite3_open_v2() is used and the vfs option is
+** present, then the VFS specified by the option takes precedence over
+** the value passed as the fourth parameter to sqlite3_open_v2().
+**
+** <li> <b>mode</b>: ^(The mode parameter may be set to either "ro", "rw" or
+** "rwc". Attempting to set it to any other value is an error)^.
+** ^If "ro" is specified, then the database is opened for read-only
+** access, just as if the [SQLITE_OPEN_READONLY] flag had been set in the
+** third argument to sqlite3_prepare_v2(). ^If the mode option is set to
+** "rw", then the database is opened for read-write (but not create)
+** access, as if SQLITE_OPEN_READWRITE (but not SQLITE_OPEN_CREATE) had
+** been set. ^Value "rwc" is equivalent to setting both
+** SQLITE_OPEN_READWRITE and SQLITE_OPEN_CREATE. ^If sqlite3_open_v2() is
+** used, it is an error to specify a value for the mode parameter that is
+** less restrictive than that specified by the flags passed as the third
+** parameter.
+**
+** <li> <b>cache</b>: ^The cache parameter may be set to either "shared" or
+** "private". ^Setting it to "shared" is equivalent to setting the
+** SQLITE_OPEN_SHAREDCACHE bit in the flags argument passed to
+** sqlite3_open_v2(). ^Setting the cache parameter to "private" is
+** equivalent to setting the SQLITE_OPEN_PRIVATECACHE bit.
+** ^If sqlite3_open_v2() is used and the "cache" parameter is present in
+** a URI filename, its value overrides any behaviour requested by setting
+** SQLITE_OPEN_PRIVATECACHE or SQLITE_OPEN_SHAREDCACHE flag.
+** </ul>
+**
+** ^Specifying an unknown parameter in the query component of a URI is not an
+** error. Future versions of SQLite might understand additional query
+** parameters. See "[query parameters with special meaning to SQLite]" for
+** additional information.
+**
+** [[URI filename examples]] <h3>URI filename examples</h3>
+**
+** <table border="1" align=center cellpadding=5>
+** <tr><th> URI filenames <th> Results
+** <tr><td> file:data.db <td>
+** Open the file "data.db" in the current directory.
+** <tr><td> file:/home/fred/data.db<br>
+** file:///home/fred/data.db <br>
+** file://localhost/home/fred/data.db <br> <td>
+** Open the database file "/home/fred/data.db".
+** <tr><td> file://darkstar/home/fred/data.db <td>
+** An error. "darkstar" is not a recognized authority.
+** <tr><td style="white-space:nowrap">
+** file:///C:/Documents%20and%20Settings/fred/Desktop/data.db
+** <td> Windows only: Open the file "data.db" on fred's desktop on drive
+** C:. Note that the %20 escaping in this example is not strictly
+** necessary - space characters can be used literally
+** in URI filenames.
+** <tr><td> file:data.db?mode=ro&cache=private <td>
+** Open file "data.db" in the current directory for read-only access.
+** Regardless of whether or not shared-cache mode is enabled by
+** default, use a private cache.
+** <tr><td> file:/home/fred/data.db?vfs=unix-nolock <td>
+** Open file "/home/fred/data.db". Use the special VFS "unix-nolock".
+** <tr><td> file:data.db?mode=readonly <td>
+** An error. "readonly" is not a valid option for the "mode" parameter.
+** </table>
+**
+** ^URI hexadecimal escape sequences (%HH) are supported within the path and
+** query components of a URI. A hexadecimal escape sequence consists of a
+** percent sign - "%" - followed by exactly two hexadecimal digits
+** specifying an octet value. ^Before the path or query components of a
+** URI filename are interpreted, they are encoded using UTF-8 and all
+** hexadecimal escape sequences replaced by a single byte containing the
+** corresponding octet. If this process generates an invalid UTF-8 encoding,
+** the results are undefined.
**
** <b>Note to Windows users:</b> The encoding used for the filename argument
** of sqlite3_open() and sqlite3_open_v2() must be UTF-8, not whatever
@@ -2366,6 +2626,45 @@
);
/*
+** CAPI3REF: Obtain Values For URI Parameters
+**
+** These are utility routines, useful to VFS implementations, that check
+** to see if a database file was a URI that contained a specific query
+** parameter, and if so obtains the value of that query parameter.
+**
+** If F is the database filename pointer passed into the xOpen() method of
+** a VFS implementation when the flags parameter to xOpen() has one or
+** more of the [SQLITE_OPEN_URI] or [SQLITE_OPEN_MAIN_DB] bits set and
+** P is the name of the query parameter, then
+** sqlite3_uri_parameter(F,P) returns the value of the P
+** parameter if it exists or a NULL pointer if P does not appear as a
+** query parameter on F. If P is a query parameter of F
+** has no explicit value, then sqlite3_uri_parameter(F,P) returns
+** a pointer to an empty string.
+**
+** The sqlite3_uri_boolean(F,P,B) routine assumes that P is a boolean
+** parameter and returns true (1) or false (0) according to the value
+** of P. The value of P is true if it is "yes" or "true" or "on" or
+** a non-zero number and is false otherwise. If P is not a query parameter
+** on F then sqlite3_uri_boolean(F,P,B) returns (B!=0).
+**
+** The sqlite3_uri_int64(F,P,D) routine converts the value of P into a
+** 64-bit signed integer and returns that integer, or D if P does not
+** exist. If the value of P is something other than an integer, then
+** zero is returned.
+**
+** If F is a NULL pointer, then sqlite3_uri_parameter(F,P) returns NULL and
+** sqlite3_uri_boolean(F,P,B) returns B. If F is not a NULL pointer and
+** is not a database file pathname pointer that SQLite passed into the xOpen
+** VFS method, then the behavior of this routine is undefined and probably
+** undesirable.
+*/
+SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam);
+SQLITE_API int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault);
+SQLITE_API sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int64);
+
+
+/*
** CAPI3REF: Error Codes And Messages
**
** ^The sqlite3_errcode() interface returns the numeric [result code] or
@@ -2480,43 +2779,45 @@
** Additional information is available at [limits | Limits in SQLite].
**
** <dl>
-** ^(<dt>SQLITE_LIMIT_LENGTH</dt>
+** [[SQLITE_LIMIT_LENGTH]] ^(<dt>SQLITE_LIMIT_LENGTH</dt>
** <dd>The maximum size of any string or BLOB or table row, in bytes.<dd>)^
**
-** ^(<dt>SQLITE_LIMIT_SQL_LENGTH</dt>
+** [[SQLITE_LIMIT_SQL_LENGTH]] ^(<dt>SQLITE_LIMIT_SQL_LENGTH</dt>
** <dd>The maximum length of an SQL statement, in bytes.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_COLUMN</dt>
+** [[SQLITE_LIMIT_COLUMN]] ^(<dt>SQLITE_LIMIT_COLUMN</dt>
** <dd>The maximum number of columns in a table definition or in the
** result set of a [SELECT] or the maximum number of columns in an index
** or in an ORDER BY or GROUP BY clause.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_EXPR_DEPTH</dt>
+** [[SQLITE_LIMIT_EXPR_DEPTH]] ^(<dt>SQLITE_LIMIT_EXPR_DEPTH</dt>
** <dd>The maximum depth of the parse tree on any expression.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_COMPOUND_SELECT</dt>
+** [[SQLITE_LIMIT_COMPOUND_SELECT]] ^(<dt>SQLITE_LIMIT_COMPOUND_SELECT</dt>
** <dd>The maximum number of terms in a compound SELECT statement.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_VDBE_OP</dt>
+** [[SQLITE_LIMIT_VDBE_OP]] ^(<dt>SQLITE_LIMIT_VDBE_OP</dt>
** <dd>The maximum number of instructions in a virtual machine program
** used to implement an SQL statement. This limit is not currently
** enforced, though that might be added in some future release of
** SQLite.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_FUNCTION_ARG</dt>
+** [[SQLITE_LIMIT_FUNCTION_ARG]] ^(<dt>SQLITE_LIMIT_FUNCTION_ARG</dt>
** <dd>The maximum number of arguments on a function.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_ATTACHED</dt>
+** [[SQLITE_LIMIT_ATTACHED]] ^(<dt>SQLITE_LIMIT_ATTACHED</dt>
** <dd>The maximum number of [ATTACH | attached databases].)^</dd>
**
+** [[SQLITE_LIMIT_LIKE_PATTERN_LENGTH]]
** ^(<dt>SQLITE_LIMIT_LIKE_PATTERN_LENGTH</dt>
** <dd>The maximum length of the pattern argument to the [LIKE] or
** [GLOB] operators.</dd>)^
**
+** [[SQLITE_LIMIT_VARIABLE_NUMBER]]
** ^(<dt>SQLITE_LIMIT_VARIABLE_NUMBER</dt>
** <dd>The maximum index number of any [parameter] in an SQL statement.)^
**
-** ^(<dt>SQLITE_LIMIT_TRIGGER_DEPTH</dt>
+** [[SQLITE_LIMIT_TRIGGER_DEPTH]] ^(<dt>SQLITE_LIMIT_TRIGGER_DEPTH</dt>
** <dd>The maximum depth of recursion for triggers.</dd>)^
** </dl>
*/
@@ -2556,7 +2857,8 @@
** that the supplied string is nul-terminated, then there is a small
** performance advantage to be gained by passing an nByte parameter that
** is equal to the number of bytes in the input string <i>including</i>
-** the nul-terminator bytes.
+** the nul-terminator bytes as this saves SQLite from having to
+** make a copy of the input string.
**
** ^If pzTail is not NULL then *pzTail is made to point to the first byte
** past the end of the first SQL statement in zSql. These routines only
@@ -2607,7 +2909,7 @@
** ^The specific value of WHERE-clause [parameter] might influence the
** choice of query plan if the parameter is the left-hand side of a [LIKE]
** or [GLOB] operator or if the parameter is compared to an indexed column
-** and the [SQLITE_ENABLE_STAT2] compile-time option is enabled.
+** and the [SQLITE_ENABLE_STAT3] compile-time option is enabled.
** the
** </li>
** </ol>
@@ -2654,17 +2956,53 @@
** CAPI3REF: Determine If An SQL Statement Writes The Database
**
** ^The sqlite3_stmt_readonly(X) interface returns true (non-zero) if
-** the [prepared statement] X is [SELECT] statement and false (zero) if
-** X is an [INSERT], [UPDATE], [DELETE], CREATE, DROP, [ANALYZE],
-** [ALTER], or [REINDEX] statement.
-** If X is a NULL pointer or any other kind of statement, including but
-** not limited to [ATTACH], [DETACH], [COMMIT], [ROLLBACK], [RELEASE],
-** [SAVEPOINT], [PRAGMA], or [VACUUM] the result of sqlite3_stmt_readonly(X) is
-** undefined.
+** and only if the [prepared statement] X makes no direct changes to
+** the content of the database file.
+**
+** Note that [application-defined SQL functions] or
+** [virtual tables] might change the database indirectly as a side effect.
+** ^(For example, if an application defines a function "eval()" that
+** calls [sqlite3_exec()], then the following SQL statement would
+** change the database file through side-effects:
+**
+** <blockquote><pre>
+** SELECT eval('DELETE FROM t1') FROM t2;
+** </pre></blockquote>
+**
+** But because the [SELECT] statement does not change the database file
+** directly, sqlite3_stmt_readonly() would still return true.)^
+**
+** ^Transaction control statements such as [BEGIN], [COMMIT], [ROLLBACK],
+** [SAVEPOINT], and [RELEASE] cause sqlite3_stmt_readonly() to return true,
+** since the statements themselves do not actually modify the database but
+** rather they control the timing of when other statements modify the
+** database. ^The [ATTACH] and [DETACH] statements also cause
+** sqlite3_stmt_readonly() to return true since, while those statements
+** change the configuration of a database connection, they do not make
+** changes to the content of the database files on disk.
*/
SQLITE_API int sqlite3_stmt_readonly(sqlite3_stmt *pStmt);
/*
+** CAPI3REF: Determine If A Prepared Statement Has Been Reset
+**
+** ^The sqlite3_stmt_busy(S) interface returns true (non-zero) if the
+** [prepared statement] S has been stepped at least once using
+** [sqlite3_step(S)] but has not run to completion and/or has not
+** been reset using [sqlite3_reset(S)]. ^The sqlite3_stmt_busy(S)
+** interface returns false if S is a NULL pointer. If S is not a
+** NULL pointer and is not a pointer to a valid [prepared statement]
+** object, then the behavior is undefined and probably undesirable.
+**
+** This interface can be used in combination [sqlite3_next_stmt()]
+** to locate all prepared statements associated with a database
+** connection that are in need of being reset. This can be used,
+** for example, in diagnostic routines to search for prepared
+** statements that are holding a transaction open.
+*/
+SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*);
+
+/*
** CAPI3REF: Dynamically Typed Value Object
** KEYWORDS: {protected sqlite3_value} {unprotected sqlite3_value}
**
@@ -2680,7 +3018,7 @@
** whether or not it requires a protected sqlite3_value.
**
** The terms "protected" and "unprotected" refer to whether or not
-** a mutex is held. A internal mutex is held for a protected
+** a mutex is held. An internal mutex is held for a protected
** sqlite3_value object but no mutex is held for an unprotected
** sqlite3_value object. If SQLite is compiled to be single-threaded
** (with [SQLITE_THREADSAFE=0] and with [sqlite3_threadsafe()] returning 0)
@@ -2760,6 +3098,13 @@
** number of <u>bytes</u> in the value, not the number of characters.)^
** ^If the fourth parameter is negative, the length of the string is
** the number of bytes up to the first zero terminator.
+** If a non-negative fourth parameter is provided to sqlite3_bind_text()
+** or sqlite3_bind_text16() then that parameter must be the byte offset
+** where the NUL terminator would occur assuming the string were NUL
+** terminated. If any NUL characters occur at byte offsets less than
+** the value of the fourth parameter then the resulting string value will
+** contain embedded NULs. The result of expressions involving strings
+** with embedded NULs is undefined.
**
** ^The fifth argument to sqlite3_bind_blob(), sqlite3_bind_text(), and
** sqlite3_bind_text16() is a destructor used to dispose of the BLOB or
@@ -2904,7 +3249,9 @@
** column number. ^The leftmost column is number 0.
**
** ^The returned string pointer is valid until either the [prepared statement]
-** is destroyed by [sqlite3_finalize()] or until the next call to
+** is destroyed by [sqlite3_finalize()] or until the statement is automatically
+** reprepared by the first call to [sqlite3_step()] for a particular run
+** or until the next call to
** sqlite3_column_name() or sqlite3_column_name16() on the same column.
**
** ^If sqlite3_malloc() fails during the processing of either routine
@@ -2930,7 +3277,9 @@
** the database name, the _table_ routines return the table name, and
** the origin_ routines return the column name.
** ^The returned string is valid until the [prepared statement] is destroyed
-** using [sqlite3_finalize()] or until the same information is requested
+** using [sqlite3_finalize()] or until the statement is automatically
+** reprepared by the first call to [sqlite3_step()] for a particular run
+** or until the same information is requested
** again in a different encoding.
**
** ^The names returned are the original un-aliased names of the
@@ -3024,7 +3373,7 @@
** ^[SQLITE_BUSY] means that the database engine was unable to acquire the
** database locks it needs to do its job. ^If the statement is a [COMMIT]
** or occurs outside of an explicit transaction, then you can retry the
-** statement. If the statement is not a [COMMIT] and occurs within a
+** statement. If the statement is not a [COMMIT] and occurs within an
** explicit transaction then you should rollback the transaction before
** continuing.
**
@@ -3054,13 +3403,17 @@
** be the case that the same database connection is being used by two or
** more threads at the same moment in time.
**
-** For all versions of SQLite up to and including 3.6.23.1, it was required
-** after sqlite3_step() returned anything other than [SQLITE_ROW] that
-** [sqlite3_reset()] be called before any subsequent invocation of
-** sqlite3_step(). Failure to invoke [sqlite3_reset()] in this way would
-** result in an [SQLITE_MISUSE] return from sqlite3_step(). But after
-** version 3.6.23.1, sqlite3_step() began calling [sqlite3_reset()]
-** automatically in this circumstance rather than returning [SQLITE_MISUSE].
+** For all versions of SQLite up to and including 3.6.23.1, a call to
+** [sqlite3_reset()] was required after sqlite3_step() returned anything
+** other than [SQLITE_ROW] before any subsequent invocation of
+** sqlite3_step(). Failure to reset the prepared statement using
+** [sqlite3_reset()] would result in an [SQLITE_MISUSE] return from
+** sqlite3_step(). But after version 3.6.23.1, sqlite3_step() began
+** calling [sqlite3_reset()] automatically in this circumstance rather
+** than returning [SQLITE_MISUSE]. This is not considered a compatibility
+** break because any application that ever receives an SQLITE_MISUSE error
+** is broken by definition. The [SQLITE_OMIT_AUTORESET] compile-time option
+** can be used to restore the legacy behavior.
**
** <b>Goofy Interface Alert:</b> In the legacy interface, the sqlite3_step()
** API always returns a generic error code, [SQLITE_ERROR], following any
@@ -3085,6 +3438,12 @@
** (via calls to the [sqlite3_column_int | sqlite3_column_*()] of
** interfaces) then sqlite3_data_count(P) returns 0.
** ^The sqlite3_data_count(P) routine also returns 0 if P is a NULL pointer.
+** ^The sqlite3_data_count(P) routine returns 0 if the previous call to
+** [sqlite3_step](P) returned [SQLITE_DONE]. ^The sqlite3_data_count(P)
+** will return non-zero if previous call to [sqlite3_step](P) returned
+** [SQLITE_ROW], except in the case of the [PRAGMA incremental_vacuum]
+** where it always returns zero since each step of that multi-step
+** pragma returns 0 columns of data.
**
** See also: [sqlite3_column_count()]
*/
@@ -3184,7 +3543,7 @@
** bytes in the string, not the number of characters.
**
** ^Strings returned by sqlite3_column_text() and sqlite3_column_text16(),
-** even empty strings, are always zero terminated. ^The return
+** even empty strings, are always zero-terminated. ^The return
** value from sqlite3_column_blob() for a zero-length BLOB is a NULL pointer.
**
** ^The object returned by [sqlite3_column_value()] is an
@@ -3299,7 +3658,7 @@
** CAPI3REF: Destroy A Prepared Statement Object
**
** ^The sqlite3_finalize() function is called to delete a [prepared statement].
-** ^If the most recent evaluation of the statement encountered no errors or
+** ^If the most recent evaluation of the statement encountered no errors
** or if the statement is never been evaluated, then sqlite3_finalize() returns
** SQLITE_OK. ^If the most recent evaluation of statement S failed, then
** sqlite3_finalize(S) returns the appropriate [error code] or
@@ -3358,7 +3717,7 @@
** are used to add SQL functions or aggregates or to redefine the behavior
** of existing SQL functions or aggregates. The only differences between
** these routines are the text encoding expected for
-** the the second parameter (the name of the function being created)
+** the second parameter (the name of the function being created)
** and the presence or absence of a destructor callback for
** the application data pointer.
**
@@ -3397,16 +3756,16 @@
** ^(The fifth parameter is an arbitrary pointer. The implementation of the
** function can gain access to this pointer using [sqlite3_user_data()].)^
**
-** ^The seventh, eighth and ninth parameters, xFunc, xStep and xFinal, are
+** ^The sixth, seventh and eighth parameters, xFunc, xStep and xFinal, are
** pointers to C-language functions that implement the SQL function or
** aggregate. ^A scalar SQL function requires an implementation of the xFunc
** callback only; NULL pointers must be passed as the xStep and xFinal
** parameters. ^An aggregate SQL function requires an implementation of xStep
** and xFinal and NULL pointer must be passed for xFunc. ^To delete an existing
-** SQL function or aggregate, pass NULL poiners for all three function
+** SQL function or aggregate, pass NULL pointers for all three function
** callbacks.
**
-** ^(If the tenth parameter to sqlite3_create_function_v2() is not NULL,
+** ^(If the ninth parameter to sqlite3_create_function_v2() is not NULL,
** then it is destructor for the application data pointer.
** The destructor is invoked when the function is deleted, either by being
** overloaded or when the database connection closes.)^
@@ -3510,7 +3869,7 @@
** The xFunc (for scalar functions) or xStep (for aggregates) parameters
** to [sqlite3_create_function()] and [sqlite3_create_function16()]
** define callbacks that implement the SQL functions and aggregates.
-** The 4th parameter to these callbacks is an array of pointers to
+** The 3rd parameter to these callbacks is an array of pointers to
** [protected sqlite3_value] objects. There is one [sqlite3_value] object for
** each parameter to the SQL function. These routines are used to
** extract values from the [sqlite3_value] objects.
@@ -3764,7 +4123,12 @@
** ^If the 3rd parameter to the sqlite3_result_text* interfaces
** is non-negative, then as many bytes (not characters) of the text
** pointed to by the 2nd parameter are taken as the application-defined
-** function result.
+** function result. If the 3rd parameter is non-negative, then it
+** must be the byte offset into the string where the NUL terminator would
+** appear if the string where NUL terminated. If any NUL characters occur
+** in the string at a byte offset that is less than the value of the 3rd
+** parameter, then the resulting string will contain embedded NULs and the
+** result of expressions operating on strings with embedded NULs is undefined.
** ^If the 4th parameter to the sqlite3_result_text* interfaces
** or sqlite3_result_blob is a non-NULL pointer, then SQLite calls that
** function as the destructor on the text or BLOB result when it has
@@ -3837,7 +4201,7 @@
** ^The [SQLITE_UTF16_ALIGNED] value for eTextRep forces strings to begin
** on an even byte address.
**
-** ^The fourth argument, pArg, is a application data pointer that is passed
+** ^The fourth argument, pArg, is an application data pointer that is passed
** through as the first argument to the collating function callback.
**
** ^The fifth argument, xCallback, is a pointer to the collating function.
@@ -3853,7 +4217,7 @@
** by the eTextRep argument. The collating function must return an
** integer that is negative, zero, or positive
** if the first string is less than, equal to, or greater than the second,
-** respectively. A collating function must alway return the same answer
+** respectively. A collating function must always return the same answer
** given the same inputs. If two or more collating functions are registered
** to the same collation name (using different eTextRep values) then all
** must give an equivalent answer when invoked with equivalent strings.
@@ -4080,6 +4444,22 @@
SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt*);
/*
+** CAPI3REF: Return The Filename For A Database Connection
+**
+** ^The sqlite3_db_filename(D,N) interface returns a pointer to a filename
+** associated with database N of connection D. ^The main database file
+** has the name "main". If there is no attached database N on the database
+** connection D, or if database N is a temporary or in-memory database, then
+** a NULL pointer is returned.
+**
+** ^The filename returned by this function is the output of the
+** xFullPathname method of the [VFS]. ^In other words, the filename
+** will be an absolute pathname, even if the filename used
+** to open the database originally was a URI or relative pathname.
+*/
+SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName);
+
+/*
** CAPI3REF: Find the next prepared statement
**
** ^This interface returns a pointer to the next [prepared statement] after
@@ -4114,13 +4494,15 @@
** on the same [database connection] D, or NULL for
** the first call for each function on D.
**
+** The commit and rollback hook callbacks are not reentrant.
** The callback implementation must not do anything that will modify
** the database connection that invoked the callback. Any actions
** to modify the database connection must be deferred until after the
** completion of the [sqlite3_step()] call that triggered the commit
** or rollback hook in the first place.
-** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their
-** database connections for the meaning of "modify" in this paragraph.
+** Note that running any other SQL statements, including SELECT statements,
+** or merely calling [sqlite3_prepare_v2()] and [sqlite3_step()] will modify
+** the database connections for the meaning of "modify" in this paragraph.
**
** ^Registering a NULL function disables the callback.
**
@@ -4233,10 +4615,25 @@
** which might be more or less than the amount requested.
** ^The sqlite3_release_memory() routine is a no-op returning zero
** if SQLite is not compiled with [SQLITE_ENABLE_MEMORY_MANAGEMENT].
+**
+** See also: [sqlite3_db_release_memory()]
*/
SQLITE_API int sqlite3_release_memory(int);
/*
+** CAPI3REF: Free Memory Used By A Database Connection
+**
+** ^The sqlite3_db_release_memory(D) interface attempts to free as much heap
+** memory as possible from database connection D. Unlike the
+** [sqlite3_release_memory()] interface, this interface is effect even
+** when then [SQLITE_ENABLE_MEMORY_MANAGEMENT] compile-time option is
+** omitted.
+**
+** See also: [sqlite3_release_memory()]
+*/
+SQLITE_API int sqlite3_db_release_memory(sqlite3*);
+
+/*
** CAPI3REF: Impose A Limit On Heap Size
**
** ^The sqlite3_soft_heap_limit64() interface sets and/or queries the
@@ -4250,7 +4647,8 @@
** is advisory only.
**
** ^The return value from sqlite3_soft_heap_limit64() is the size of
-** the soft heap limit prior to the call. ^If the argument N is negative
+** the soft heap limit prior to the call, or negative in the case of an
+** error. ^If the argument N is negative
** then no change is made to the soft heap limit. Hence, the current
** size of the soft heap limit can be determined by invoking
** sqlite3_soft_heap_limit64() with a negative argument.
@@ -4265,8 +4663,8 @@
** <li> Memory accounting is disabled using a combination of the
** [sqlite3_config]([SQLITE_CONFIG_MEMSTATUS],...) start-time option and
** the [SQLITE_DEFAULT_MEMSTATUS] compile-time option.
-** <li> An alternative page cache implementation is specifed using
-** [sqlite3_config]([SQLITE_CONFIG_PCACHE],...).
+** <li> An alternative page cache implementation is specified using
+** [sqlite3_config]([SQLITE_CONFIG_PCACHE2],...).
** <li> The page cache allocates from its own memory pool supplied
** by [sqlite3_config]([SQLITE_CONFIG_PAGECACHE],...) rather than
** from the heap.
@@ -4486,7 +4884,7 @@
** CAPI3REF: Virtual Table Object
** KEYWORDS: sqlite3_module {virtual table module}
**
-** This structure, sometimes called a a "virtual table module",
+** This structure, sometimes called a "virtual table module",
** defines the implementation of a [virtual tables].
** This structure consists mostly of methods for the module.
**
@@ -4526,6 +4924,11 @@
void (**pxFunc)(sqlite3_context*,int,sqlite3_value**),
void **ppArg);
int (*xRename)(sqlite3_vtab *pVtab, const char *zNew);
+ /* The methods above are in version 1 of the sqlite_module object. Those
+ ** below are for version 2 and greater. */
+ int (*xSavepoint)(sqlite3_vtab *pVTab, int);
+ int (*xRelease)(sqlite3_vtab *pVTab, int);
+ int (*xRollbackTo)(sqlite3_vtab *pVTab, int);
};
/*
@@ -4798,7 +5201,7 @@
** This is true if any column of the row is changed, even a column
** other than the one the BLOB handle is open on.)^
** ^Calls to [sqlite3_blob_read()] and [sqlite3_blob_write()] for
-** a expired BLOB handle fail with an return code of [SQLITE_ABORT].
+** an expired BLOB handle fail with a return code of [SQLITE_ABORT].
** ^(Changes written into a BLOB prior to the BLOB expiring are not
** rolled back by the expiration of the BLOB. Such changes will eventually
** commit if the transaction continues to completion.)^
@@ -5003,7 +5406,7 @@
**
** <ul>
** <li> SQLITE_MUTEX_OS2
-** <li> SQLITE_MUTEX_PTHREAD
+** <li> SQLITE_MUTEX_PTHREADS
** <li> SQLITE_MUTEX_W32
** <li> SQLITE_MUTEX_NOOP
** </ul>)^
@@ -5011,7 +5414,7 @@
** ^The SQLITE_MUTEX_NOOP implementation is a set of routines
** that does no real locking and is appropriate for use in
** a single-threaded application. ^The SQLITE_MUTEX_OS2,
-** SQLITE_MUTEX_PTHREAD, and SQLITE_MUTEX_W32 implementations
+** SQLITE_MUTEX_PTHREADS, and SQLITE_MUTEX_W32 implementations
** are appropriate for use on OS/2, Unix, and Windows.
**
** ^(If SQLite is compiled with the SQLITE_MUTEX_APPDEF preprocessor
@@ -5201,14 +5604,14 @@
** ^These routines should return true if the mutex in their argument
** is held or not held, respectively, by the calling thread.
**
-** ^The implementation is not required to provided versions of these
+** ^The implementation is not required to provide versions of these
** routines that actually work. If the implementation does not provide working
** versions of these routines, it should at least provide stubs that always
** return true so that one does not get spurious assertion failures.
**
** ^If the argument to sqlite3_mutex_held() is a NULL pointer then
** the routine should return 1. This seems counter-intuitive since
-** clearly the mutex cannot be held if it does not exist. But the
+** clearly the mutex cannot be held if it does not exist. But
** the reason the mutex does not exist is because the build is not
** using mutexes. And we do not want the assert() containing the
** call to sqlite3_mutex_held() to fail, so a non-zero return is
@@ -5238,7 +5641,8 @@
#define SQLITE_MUTEX_STATIC_OPEN 4 /* sqlite3BtreeOpen() */
#define SQLITE_MUTEX_STATIC_PRNG 5 /* sqlite3_random() */
#define SQLITE_MUTEX_STATIC_LRU 6 /* lru page list */
-#define SQLITE_MUTEX_STATIC_LRU2 7 /* lru page list */
+#define SQLITE_MUTEX_STATIC_LRU2 7 /* NOT USED */
+#define SQLITE_MUTEX_STATIC_PMEM 7 /* sqlite3PageMalloc() */
/*
** CAPI3REF: Retrieve the mutex for a database connection
@@ -5328,9 +5732,10 @@
#define SQLITE_TESTCTRL_RESERVE 14
#define SQLITE_TESTCTRL_OPTIMIZATIONS 15
#define SQLITE_TESTCTRL_ISKEYWORD 16
-#define SQLITE_TESTCTRL_PGHDRSZ 17
-#define SQLITE_TESTCTRL_SCRATCHMALLOC 18
-#define SQLITE_TESTCTRL_LAST 18
+#define SQLITE_TESTCTRL_SCRATCHMALLOC 17
+#define SQLITE_TESTCTRL_LOCALTIME_FAULT 18
+#define SQLITE_TESTCTRL_EXPLAIN_STMT 19
+#define SQLITE_TESTCTRL_LAST 19
/*
** CAPI3REF: SQLite Runtime Status
@@ -5339,7 +5744,7 @@
** about the performance of SQLite, and optionally to reset various
** highwater marks. ^The first argument is an integer code for
** the specific parameter to measure. ^(Recognized integer codes
-** are of the form [SQLITE_STATUS_MEMORY_USED | SQLITE_STATUS_...].)^
+** are of the form [status parameters | SQLITE_STATUS_...].)^
** ^The current value of the parameter is returned into *pCurrent.
** ^The highest recorded value is returned in *pHighwater. ^If the
** resetFlag is true, then the highest record value is reset after
@@ -5366,12 +5771,13 @@
/*
** CAPI3REF: Status Parameters
+** KEYWORDS: {status parameters}
**
** These integer constants designate various run-time status parameters
** that can be returned by [sqlite3_status()].
**
** <dl>
-** ^(<dt>SQLITE_STATUS_MEMORY_USED</dt>
+** [[SQLITE_STATUS_MEMORY_USED]] ^(<dt>SQLITE_STATUS_MEMORY_USED</dt>
** <dd>This parameter is the current amount of memory checked out
** using [sqlite3_malloc()], either directly or indirectly. The
** figure includes calls made to [sqlite3_malloc()] by the application
@@ -5381,22 +5787,24 @@
** this parameter. The amount returned is the sum of the allocation
** sizes as reported by the xSize method in [sqlite3_mem_methods].</dd>)^
**
-** ^(<dt>SQLITE_STATUS_MALLOC_SIZE</dt>
+** [[SQLITE_STATUS_MALLOC_SIZE]] ^(<dt>SQLITE_STATUS_MALLOC_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [sqlite3_malloc()] or [sqlite3_realloc()] (or their
** internal equivalents). Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_MALLOC_COUNT</dt>
-** <dd>This parameter records the number of separate memory allocations.</dd>)^
+** [[SQLITE_STATUS_MALLOC_COUNT]] ^(<dt>SQLITE_STATUS_MALLOC_COUNT</dt>
+** <dd>This parameter records the number of separate memory allocations
+** currently checked out.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_PAGECACHE_USED</dt>
+** [[SQLITE_STATUS_PAGECACHE_USED]] ^(<dt>SQLITE_STATUS_PAGECACHE_USED</dt>
** <dd>This parameter returns the number of pages used out of the
** [pagecache memory allocator] that was configured using
** [SQLITE_CONFIG_PAGECACHE]. The
** value returned is in pages, not in bytes.</dd>)^
**
+** [[SQLITE_STATUS_PAGECACHE_OVERFLOW]]
** ^(<dt>SQLITE_STATUS_PAGECACHE_OVERFLOW</dt>
** <dd>This parameter returns the number of bytes of page cache
** allocation which could not be satisfied by the [SQLITE_CONFIG_PAGECACHE]
@@ -5406,13 +5814,13 @@
** [SQLITE_CONFIG_PAGECACHE]) and allocations that overflowed because
** no space was left in the page cache.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_PAGECACHE_SIZE</dt>
+** [[SQLITE_STATUS_PAGECACHE_SIZE]] ^(<dt>SQLITE_STATUS_PAGECACHE_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [pagecache memory allocator]. Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_SCRATCH_USED</dt>
+** [[SQLITE_STATUS_SCRATCH_USED]] ^(<dt>SQLITE_STATUS_SCRATCH_USED</dt>
** <dd>This parameter returns the number of allocations used out of the
** [scratch memory allocator] configured using
** [SQLITE_CONFIG_SCRATCH]. The value returned is in allocations, not
@@ -5420,7 +5828,7 @@
** outstanding at time, this parameter also reports the number of threads
** using scratch memory at the same time.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_SCRATCH_OVERFLOW</dt>
+** [[SQLITE_STATUS_SCRATCH_OVERFLOW]] ^(<dt>SQLITE_STATUS_SCRATCH_OVERFLOW</dt>
** <dd>This parameter returns the number of bytes of scratch memory
** allocation which could not be satisfied by the [SQLITE_CONFIG_SCRATCH]
** buffer and where forced to overflow to [sqlite3_malloc()]. The values
@@ -5430,13 +5838,13 @@
** slots were available.
** </dd>)^
**
-** ^(<dt>SQLITE_STATUS_SCRATCH_SIZE</dt>
+** [[SQLITE_STATUS_SCRATCH_SIZE]] ^(<dt>SQLITE_STATUS_SCRATCH_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [scratch memory allocator]. Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_PARSER_STACK</dt>
+** [[SQLITE_STATUS_PARSER_STACK]] ^(<dt>SQLITE_STATUS_PARSER_STACK</dt>
** <dd>This parameter records the deepest parser stack. It is only
** meaningful if SQLite is compiled with [YYTRACKMAXSTACKDEPTH].</dd>)^
** </dl>
@@ -5461,9 +5869,9 @@
** about a single [database connection]. ^The first argument is the
** database connection object to be interrogated. ^The second argument
** is an integer constant, taken from the set of
-** [SQLITE_DBSTATUS_LOOKASIDE_USED | SQLITE_DBSTATUS_*] macros, that
+** [SQLITE_DBSTATUS options], that
** determines the parameter to interrogate. The set of
-** [SQLITE_DBSTATUS_LOOKASIDE_USED | SQLITE_DBSTATUS_*] macros is likely
+** [SQLITE_DBSTATUS options] is likely
** to grow in future releases of SQLite.
**
** ^The current value of the requested parameter is written into *pCur
@@ -5480,6 +5888,7 @@
/*
** CAPI3REF: Status Parameters for database connections
+** KEYWORDS: {SQLITE_DBSTATUS options}
**
** These constants are the available integer "verbs" that can be passed as
** the second argument to the [sqlite3_db_status()] interface.
@@ -5491,16 +5900,37 @@
** if a discontinued or unsupported verb is invoked.
**
** <dl>
-** ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_USED</dt>
+** [[SQLITE_DBSTATUS_LOOKASIDE_USED]] ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_USED</dt>
** <dd>This parameter returns the number of lookaside memory slots currently
** checked out.</dd>)^
**
-** ^(<dt>SQLITE_DBSTATUS_CACHE_USED</dt>
+** [[SQLITE_DBSTATUS_LOOKASIDE_HIT]] ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_HIT</dt>
+** <dd>This parameter returns the number malloc attempts that were
+** satisfied using lookaside memory. Only the high-water value is meaningful;
+** the current value is always zero.)^
+**
+** [[SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE]]
+** ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE</dt>
+** <dd>This parameter returns the number malloc attempts that might have
+** been satisfied using lookaside memory but failed due to the amount of
+** memory requested being larger than the lookaside slot size.
+** Only the high-water value is meaningful;
+** the current value is always zero.)^
+**
+** [[SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL]]
+** ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL</dt>
+** <dd>This parameter returns the number malloc attempts that might have
+** been satisfied using lookaside memory but failed due to all lookaside
+** memory already being in use.
+** Only the high-water value is meaningful;
+** the current value is always zero.)^
+**
+** [[SQLITE_DBSTATUS_CACHE_USED]] ^(<dt>SQLITE_DBSTATUS_CACHE_USED</dt>
** <dd>This parameter returns the approximate number of of bytes of heap
** memory used by all pager caches associated with the database connection.)^
** ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_USED is always 0.
**
-** ^(<dt>SQLITE_DBSTATUS_SCHEMA_USED</dt>
+** [[SQLITE_DBSTATUS_SCHEMA_USED]] ^(<dt>SQLITE_DBSTATUS_SCHEMA_USED</dt>
** <dd>This parameter returns the approximate number of of bytes of heap
** memory used to store the schema for all databases associated
** with the connection - main, temp, and any [ATTACH]-ed databases.)^
@@ -5509,26 +5939,43 @@
** [shared cache mode] being enabled.
** ^The highwater mark associated with SQLITE_DBSTATUS_SCHEMA_USED is always 0.
**
-** ^(<dt>SQLITE_DBSTATUS_STMT_USED</dt>
+** [[SQLITE_DBSTATUS_STMT_USED]] ^(<dt>SQLITE_DBSTATUS_STMT_USED</dt>
** <dd>This parameter returns the approximate number of of bytes of heap
** and lookaside memory used by all prepared statements associated with
** the database connection.)^
** ^The highwater mark associated with SQLITE_DBSTATUS_STMT_USED is always 0.
** </dd>
+**
+** [[SQLITE_DBSTATUS_CACHE_HIT]] ^(<dt>SQLITE_DBSTATUS_CACHE_HIT</dt>
+** <dd>This parameter returns the number of pager cache hits that have
+** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_HIT
+** is always 0.
+** </dd>
+**
+** [[SQLITE_DBSTATUS_CACHE_MISS]] ^(<dt>SQLITE_DBSTATUS_CACHE_MISS</dt>
+** <dd>This parameter returns the number of pager cache misses that have
+** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_MISS
+** is always 0.
+** </dd>
** </dl>
*/
-#define SQLITE_DBSTATUS_LOOKASIDE_USED 0
-#define SQLITE_DBSTATUS_CACHE_USED 1
-#define SQLITE_DBSTATUS_SCHEMA_USED 2
-#define SQLITE_DBSTATUS_STMT_USED 3
-#define SQLITE_DBSTATUS_MAX 3 /* Largest defined DBSTATUS */
+#define SQLITE_DBSTATUS_LOOKASIDE_USED 0
+#define SQLITE_DBSTATUS_CACHE_USED 1
+#define SQLITE_DBSTATUS_SCHEMA_USED 2
+#define SQLITE_DBSTATUS_STMT_USED 3
+#define SQLITE_DBSTATUS_LOOKASIDE_HIT 4
+#define SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE 5
+#define SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL 6
+#define SQLITE_DBSTATUS_CACHE_HIT 7
+#define SQLITE_DBSTATUS_CACHE_MISS 8
+#define SQLITE_DBSTATUS_MAX 8 /* Largest defined DBSTATUS */
/*
** CAPI3REF: Prepared Statement Status
**
** ^(Each prepared statement maintains various
-** [SQLITE_STMTSTATUS_SORT | counters] that measure the number
+** [SQLITE_STMTSTATUS counters] that measure the number
** of times it has performed specific operations.)^ These counters can
** be used to monitor the performance characteristics of the prepared
** statements. For example, if the number of table steps greatly exceeds
@@ -5539,7 +5986,7 @@
** ^(This interface is used to retrieve and reset counter values from
** a [prepared statement]. The first argument is the prepared statement
** object to be interrogated. The second argument
-** is an integer code for a specific [SQLITE_STMTSTATUS_SORT | counter]
+** is an integer code for a specific [SQLITE_STMTSTATUS counter]
** to be interrogated.)^
** ^The current value of the requested counter is returned.
** ^If the resetFlg is true, then the counter is reset to zero after this
@@ -5551,30 +5998,30 @@
/*
** CAPI3REF: Status Parameters for prepared statements
+** KEYWORDS: {SQLITE_STMTSTATUS counter} {SQLITE_STMTSTATUS counters}
**
** These preprocessor macros define integer codes that name counter
** values associated with the [sqlite3_stmt_status()] interface.
** The meanings of the various counters are as follows:
**
** <dl>
-** <dt>SQLITE_STMTSTATUS_FULLSCAN_STEP</dt>
+** [[SQLITE_STMTSTATUS_FULLSCAN_STEP]] <dt>SQLITE_STMTSTATUS_FULLSCAN_STEP</dt>
** <dd>^This is the number of times that SQLite has stepped forward in
** a table as part of a full table scan. Large numbers for this counter
** may indicate opportunities for performance improvement through
** careful use of indices.</dd>
**
-** <dt>SQLITE_STMTSTATUS_SORT</dt>
+** [[SQLITE_STMTSTATUS_SORT]] <dt>SQLITE_STMTSTATUS_SORT</dt>
** <dd>^This is the number of sort operations that have occurred.
** A non-zero value in this counter may indicate an opportunity to
** improvement performance through careful use of indices.</dd>
**
-** <dt>SQLITE_STMTSTATUS_AUTOINDEX</dt>
+** [[SQLITE_STMTSTATUS_AUTOINDEX]] <dt>SQLITE_STMTSTATUS_AUTOINDEX</dt>
** <dd>^This is the number of rows inserted into transient indices that
** were created automatically in order to help joins run faster.
** A non-zero value in this counter may indicate an opportunity to
** improvement performance by adding permanent indices that do not
** need to be reinitialized each time the statement is run.</dd>
-**
** </dl>
*/
#define SQLITE_STMTSTATUS_FULLSCAN_STEP 1
@@ -5590,17 +6037,33 @@
** sqlite3_pcache object except by holding and passing pointers
** to the object.
**
-** See [sqlite3_pcache_methods] for additional information.
+** See [sqlite3_pcache_methods2] for additional information.
*/
typedef struct sqlite3_pcache sqlite3_pcache;
/*
+** CAPI3REF: Custom Page Cache Object
+**
+** The sqlite3_pcache_page object represents a single page in the
+** page cache. The page cache will allocate instances of this
+** object. Various methods of the page cache use pointers to instances
+** of this object as parameters or as their return value.
+**
+** See [sqlite3_pcache_methods2] for additional information.
+*/
+typedef struct sqlite3_pcache_page sqlite3_pcache_page;
+struct sqlite3_pcache_page {
+ void *pBuf; /* The content of the page */
+ void *pExtra; /* Extra information associated with the page */
+};
+
+/*
** CAPI3REF: Application Defined Page Cache.
** KEYWORDS: {page cache}
**
-** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE], ...) interface can
+** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE2], ...) interface can
** register an alternative page cache implementation by passing in an
-** instance of the sqlite3_pcache_methods structure.)^
+** instance of the sqlite3_pcache_methods2 structure.)^
** In many applications, most of the heap memory allocated by
** SQLite is used for the page cache.
** By implementing a
@@ -5614,21 +6077,23 @@
** extreme measure that is only needed by the most demanding applications.
** The built-in page cache is recommended for most uses.
**
-** ^(The contents of the sqlite3_pcache_methods structure are copied to an
+** ^(The contents of the sqlite3_pcache_methods2 structure are copied to an
** internal buffer by SQLite within the call to [sqlite3_config]. Hence
** the application may discard the parameter after the call to
** [sqlite3_config()] returns.)^
**
+** [[the xInit() page cache method]]
** ^(The xInit() method is called once for each effective
** call to [sqlite3_initialize()])^
** (usually only once during the lifetime of the process). ^(The xInit()
-** method is passed a copy of the sqlite3_pcache_methods.pArg value.)^
+** method is passed a copy of the sqlite3_pcache_methods2.pArg value.)^
** The intent of the xInit() method is to set up global data structures
** required by the custom page cache implementation.
** ^(If the xInit() method is NULL, then the
** built-in default page cache is used instead of the application defined
** page cache.)^
**
+** [[the xShutdown() page cache method]]
** ^The xShutdown() method is called by [sqlite3_shutdown()].
** It can be used to clean up
** any outstanding resources before process shutdown, if required.
@@ -5643,19 +6108,20 @@
** ^SQLite will never invoke xInit() more than once without an intervening
** call to xShutdown().
**
+** [[the xCreate() page cache methods]]
** ^SQLite invokes the xCreate() method to construct a new cache instance.
** SQLite will typically create one cache instance for each open database file,
** though this is not guaranteed. ^The
** first parameter, szPage, is the size in bytes of the pages that must
-** be allocated by the cache. ^szPage will not be a power of two. ^szPage
-** will the page size of the database file that is to be cached plus an
-** increment (here called "R") of about 100 or 200. SQLite will use the
-** extra R bytes on each page to store metadata about the underlying
-** database page on disk. The value of R depends
+** be allocated by the cache. ^szPage will always a power of two. ^The
+** second parameter szExtra is a number of bytes of extra storage
+** associated with each page cache entry. ^The szExtra parameter will
+** a number less than 250. SQLite will use the
+** extra szExtra bytes on each page to store metadata about the underlying
+** database page on disk. The value passed into szExtra depends
** on the SQLite version, the target platform, and how SQLite was compiled.
-** ^R is constant for a particular build of SQLite. ^The second argument to
-** xCreate(), bPurgeable, is true if the cache being created will
-** be used to cache database pages of a file stored on disk, or
+** ^The third argument to xCreate(), bPurgeable, is true if the cache being
+** created will be used to cache database pages of a file stored on disk, or
** false if it is used for an in-memory database. The cache implementation
** does not have to do anything special based with the value of bPurgeable;
** it is purely advisory. ^On a cache where bPurgeable is false, SQLite will
@@ -5665,6 +6131,7 @@
** ^Hence, a cache created with bPurgeable false will
** never contain any unpinned pages.
**
+** [[the xCachesize() page cache method]]
** ^(The xCachesize() method may be called at any time by SQLite to set the
** suggested maximum cache-size (number of pages stored by) the cache
** instance passed as the first argument. This is the value configured using
@@ -5672,20 +6139,27 @@
** parameter, the implementation is not required to do anything with this
** value; it is advisory only.
**
+** [[the xPagecount() page cache methods]]
** The xPagecount() method must return the number of pages currently
** stored in the cache, both pinned and unpinned.
**
+** [[the xFetch() page cache methods]]
** The xFetch() method locates a page in the cache and returns a pointer to
-** the page, or a NULL pointer.
-** A "page", in this context, means a buffer of szPage bytes aligned at an
-** 8-byte boundary. The page to be fetched is determined by the key. ^The
-** mimimum key value is 1. After it has been retrieved using xFetch, the page
-** is considered to be "pinned".
+** an sqlite3_pcache_page object associated with that page, or a NULL pointer.
+** The pBuf element of the returned sqlite3_pcache_page object will be a
+** pointer to a buffer of szPage bytes used to store the content of a
+** single database page. The pExtra element of sqlite3_pcache_page will be
+** a pointer to the szExtra bytes of extra storage that SQLite has requested
+** for each entry in the page cache.
+**
+** The page to be fetched is determined by the key. ^The minimum key value
+** is 1. After it has been retrieved using xFetch, the page is considered
+** to be "pinned".
**
** If the requested page is already in the page cache, then the page cache
** implementation must return a pointer to the page buffer with its content
** intact. If the requested page is not already in the cache, then the
-** behavior of the cache implementation should use the value of the createFlag
+** cache implementation should use the value of the createFlag
** parameter to help it determined what action to take:
**
** <table border=1 width=85% align=center>
@@ -5703,6 +6177,7 @@
** attempt to unpin one or more cache pages by spilling the content of
** pinned pages to disk and synching the operating system disk cache.
**
+** [[the xUnpin() page cache method]]
** ^xUnpin() is called by SQLite with a pointer to a currently pinned page
** as its second argument. If the third parameter, discard, is non-zero,
** then the page must be evicted from the cache.
@@ -5715,6 +6190,7 @@
** call to xUnpin() unpins the page regardless of the number of prior calls
** to xFetch().
**
+** [[the xRekey() page cache methods]]
** The xRekey() method is used to change the key value associated with the
** page passed as the second argument. If the cache
** previously contains an entry associated with newKey, it must be
@@ -5727,11 +6203,41 @@
** of these pages are pinned, they are implicitly unpinned, meaning that
** they can be safely discarded.
**
+** [[the xDestroy() page cache method]]
** ^The xDestroy() method is used to delete a cache allocated by xCreate().
** All resources associated with the specified cache should be freed. ^After
** calling the xDestroy() method, SQLite considers the [sqlite3_pcache*]
-** handle invalid, and will not use it with any other sqlite3_pcache_methods
+** handle invalid, and will not use it with any other sqlite3_pcache_methods2
** functions.
+**
+** [[the xShrink() page cache method]]
+** ^SQLite invokes the xShrink() method when it wants the page cache to
+** free up as much of heap memory as possible. The page cache implementation
+** is not obligated to free any memory, but well-behaved implementations should
+** do their best.
+*/
+typedef struct sqlite3_pcache_methods2 sqlite3_pcache_methods2;
+struct sqlite3_pcache_methods2 {
+ int iVersion;
+ void *pArg;
+ int (*xInit)(void*);
+ void (*xShutdown)(void*);
+ sqlite3_pcache *(*xCreate)(int szPage, int szExtra, int bPurgeable);
+ void (*xCachesize)(sqlite3_pcache*, int nCachesize);
+ int (*xPagecount)(sqlite3_pcache*);
+ sqlite3_pcache_page *(*xFetch)(sqlite3_pcache*, unsigned key, int createFlag);
+ void (*xUnpin)(sqlite3_pcache*, sqlite3_pcache_page*, int discard);
+ void (*xRekey)(sqlite3_pcache*, sqlite3_pcache_page*,
+ unsigned oldKey, unsigned newKey);
+ void (*xTruncate)(sqlite3_pcache*, unsigned iLimit);
+ void (*xDestroy)(sqlite3_pcache*);
+ void (*xShrink)(sqlite3_pcache*);
+};
+
+/*
+** This is the obsolete pcache_methods object that has now been replaced
+** by sqlite3_pcache_methods2. This object is not used by SQLite. It is
+** retained in the header file for backwards compatibility only.
*/
typedef struct sqlite3_pcache_methods sqlite3_pcache_methods;
struct sqlite3_pcache_methods {
@@ -5748,6 +6254,7 @@
void (*xDestroy)(sqlite3_pcache*);
};
+
/*
** CAPI3REF: Online Backup Object
**
@@ -5769,11 +6276,12 @@
**
** See Also: [Using the SQLite Online Backup API]
**
-** ^Exclusive access is required to the destination database for the
-** duration of the operation. ^However the source database is only
-** read-locked while it is actually being read; it is not locked
-** continuously for the entire backup operation. ^Thus, the backup may be
-** performed on a live source database without preventing other users from
+** ^SQLite holds a write transaction open on the destination database file
+** for the duration of the backup operation.
+** ^The source database is read-locked only while it is being read;
+** it is not locked continuously for the entire backup operation.
+** ^Thus, the backup may be performed on a live source database without
+** preventing other database connections from
** reading or writing to the source database while the backup is underway.
**
** ^(To perform a backup operation:
@@ -5788,7 +6296,7 @@
** There should be exactly one call to sqlite3_backup_finish() for each
** successful call to sqlite3_backup_init().
**
-** <b>sqlite3_backup_init()</b>
+** [[sqlite3_backup_init()]] <b>sqlite3_backup_init()</b>
**
** ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the
** [database connection] associated with the destination database
@@ -5800,11 +6308,11 @@
** sqlite3_backup_init(D,N,S,M) identify the [database connection]
** and database name of the source database, respectively.
** ^The source and destination [database connections] (parameters S and D)
-** must be different or else sqlite3_backup_init(D,N,S,M) will file with
+** must be different or else sqlite3_backup_init(D,N,S,M) will fail with
** an error.
**
** ^If an error occurs within sqlite3_backup_init(D,N,S,M), then NULL is
-** returned and an error code and error message are store3d in the
+** returned and an error code and error message are stored in the
** destination [database connection] D.
** ^The error code and message for the failed call to sqlite3_backup_init()
** can be retrieved using the [sqlite3_errcode()], [sqlite3_errmsg()], and/or
@@ -5815,13 +6323,13 @@
** sqlite3_backup_finish() functions to perform the specified backup
** operation.
**
-** <b>sqlite3_backup_step()</b>
+** [[sqlite3_backup_step()]] <b>sqlite3_backup_step()</b>
**
** ^Function sqlite3_backup_step(B,N) will copy up to N pages between
** the source and destination databases specified by [sqlite3_backup] object B.
** ^If N is negative, all remaining source pages are copied.
** ^If sqlite3_backup_step(B,N) successfully copies N pages and there
-** are still more pages to be copied, then the function resturns [SQLITE_OK].
+** are still more pages to be copied, then the function returns [SQLITE_OK].
** ^If sqlite3_backup_step(B,N) successfully finishes copying all pages
** from source to destination, then it returns [SQLITE_DONE].
** ^If an error occurs while running sqlite3_backup_step(B,N),
@@ -5835,7 +6343,7 @@
** <li> the destination database was opened read-only, or
** <li> the destination database is using write-ahead-log journaling
** and the destination and source page sizes differ, or
-** <li> The destination database is an in-memory database and the
+** <li> the destination database is an in-memory database and the
** destination and source page sizes differ.
** </ol>)^
**
@@ -5872,7 +6380,7 @@
** by the backup operation, then the backup database is automatically
** updated at the same time.
**
-** <b>sqlite3_backup_finish()</b>
+** [[sqlite3_backup_finish()]] <b>sqlite3_backup_finish()</b>
**
** When sqlite3_backup_step() has returned [SQLITE_DONE], or when the
** application wishes to abandon the backup operation, the application
@@ -5895,7 +6403,8 @@
** is not a permanent error and does not affect the return value of
** sqlite3_backup_finish().
**
-** <b>sqlite3_backup_remaining(), sqlite3_backup_pagecount()</b>
+** [[sqlite3_backup__remaining()]] [[sqlite3_backup_pagecount()]]
+** <b>sqlite3_backup_remaining() and sqlite3_backup_pagecount()</b>
**
** ^Each call to sqlite3_backup_step() sets two values inside
** the [sqlite3_backup] object: the number of pages still to be backed
@@ -6166,7 +6675,8 @@
** from SQL.
**
** ^Every new [database connection] defaults to having the auto-checkpoint
-** enabled with a threshold of 1000 pages. The use of this interface
+** enabled with a threshold of 1000 or [SQLITE_DEFAULT_WAL_AUTOCHECKPOINT]
+** pages. The use of this interface
** is only necessary if the default setting is found to be suboptimal
** for a particular application.
*/
@@ -6185,10 +6695,190 @@
** from SQL. ^The [sqlite3_wal_autocheckpoint()] interface and the
** [wal_autocheckpoint pragma] can be used to cause this interface to be
** run whenever the WAL reaches a certain size threshold.
+**
+** See also: [sqlite3_wal_checkpoint_v2()]
*/
SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb);
/*
+** CAPI3REF: Checkpoint a database
+**
+** Run a checkpoint operation on WAL database zDb attached to database
+** handle db. The specific operation is determined by the value of the
+** eMode parameter:
+**
+** <dl>
+** <dt>SQLITE_CHECKPOINT_PASSIVE<dd>
+** Checkpoint as many frames as possible without waiting for any database
+** readers or writers to finish. Sync the db file if all frames in the log
+** are checkpointed. This mode is the same as calling
+** sqlite3_wal_checkpoint(). The busy-handler callback is never invoked.
+**
+** <dt>SQLITE_CHECKPOINT_FULL<dd>
+** This mode blocks (calls the busy-handler callback) until there is no
+** database writer and all readers are reading from the most recent database
+** snapshot. It then checkpoints all frames in the log file and syncs the
+** database file. This call blocks database writers while it is running,
+** but not database readers.
+**
+** <dt>SQLITE_CHECKPOINT_RESTART<dd>
+** This mode works the same way as SQLITE_CHECKPOINT_FULL, except after
+** checkpointing the log file it blocks (calls the busy-handler callback)
+** until all readers are reading from the database file only. This ensures
+** that the next client to write to the database file restarts the log file
+** from the beginning. This call blocks database writers while it is running,
+** but not database readers.
+** </dl>
+**
+** If pnLog is not NULL, then *pnLog is set to the total number of frames in
+** the log file before returning. If pnCkpt is not NULL, then *pnCkpt is set to
+** the total number of checkpointed frames (including any that were already
+** checkpointed when this function is called). *pnLog and *pnCkpt may be
+** populated even if sqlite3_wal_checkpoint_v2() returns other than SQLITE_OK.
+** If no values are available because of an error, they are both set to -1
+** before returning to communicate this to the caller.
+**
+** All calls obtain an exclusive "checkpoint" lock on the database file. If
+** any other process is running a checkpoint operation at the same time, the
+** lock cannot be obtained and SQLITE_BUSY is returned. Even if there is a
+** busy-handler configured, it will not be invoked in this case.
+**
+** The SQLITE_CHECKPOINT_FULL and RESTART modes also obtain the exclusive
+** "writer" lock on the database file. If the writer lock cannot be obtained
+** immediately, and a busy-handler is configured, it is invoked and the writer
+** lock retried until either the busy-handler returns 0 or the lock is
+** successfully obtained. The busy-handler is also invoked while waiting for
+** database readers as described above. If the busy-handler returns 0 before
+** the writer lock is obtained or while waiting for database readers, the
+** checkpoint operation proceeds from that point in the same way as
+** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible
+** without blocking any further. SQLITE_BUSY is returned in this case.
+**
+** If parameter zDb is NULL or points to a zero length string, then the
+** specified operation is attempted on all WAL databases. In this case the
+** values written to output parameters *pnLog and *pnCkpt are undefined. If
+** an SQLITE_BUSY error is encountered when processing one or more of the
+** attached WAL databases, the operation is still attempted on any remaining
+** attached databases and SQLITE_BUSY is returned to the caller. If any other
+** error occurs while processing an attached database, processing is abandoned
+** and the error code returned to the caller immediately. If no error
+** (SQLITE_BUSY or otherwise) is encountered while processing the attached
+** databases, SQLITE_OK is returned.
+**
+** If database zDb is the name of an attached database that is not in WAL
+** mode, SQLITE_OK is returned and both *pnLog and *pnCkpt set to -1. If
+** zDb is not NULL (or a zero length string) and is not the name of any
+** attached database, SQLITE_ERROR is returned to the caller.
+*/
+SQLITE_API int sqlite3_wal_checkpoint_v2(
+ sqlite3 *db, /* Database handle */
+ const char *zDb, /* Name of attached database (or NULL) */
+ int eMode, /* SQLITE_CHECKPOINT_* value */
+ int *pnLog, /* OUT: Size of WAL log in frames */
+ int *pnCkpt /* OUT: Total number of frames checkpointed */
+);
+
+/*
+** CAPI3REF: Checkpoint operation parameters
+**
+** These constants can be used as the 3rd parameter to
+** [sqlite3_wal_checkpoint_v2()]. See the [sqlite3_wal_checkpoint_v2()]
+** documentation for additional information about the meaning and use of
+** each of these values.
+*/
+#define SQLITE_CHECKPOINT_PASSIVE 0
+#define SQLITE_CHECKPOINT_FULL 1
+#define SQLITE_CHECKPOINT_RESTART 2
+
+/*
+** CAPI3REF: Virtual Table Interface Configuration
+**
+** This function may be called by either the [xConnect] or [xCreate] method
+** of a [virtual table] implementation to configure
+** various facets of the virtual table interface.
+**
+** If this interface is invoked outside the context of an xConnect or
+** xCreate virtual table method then the behavior is undefined.
+**
+** At present, there is only one option that may be configured using
+** this function. (See [SQLITE_VTAB_CONSTRAINT_SUPPORT].) Further options
+** may be added in the future.
+*/
+SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...);
+
+/*
+** CAPI3REF: Virtual Table Configuration Options
+**
+** These macros define the various options to the
+** [sqlite3_vtab_config()] interface that [virtual table] implementations
+** can use to customize and optimize their behavior.
+**
+** <dl>
+** <dt>SQLITE_VTAB_CONSTRAINT_SUPPORT
+** <dd>Calls of the form
+** [sqlite3_vtab_config](db,SQLITE_VTAB_CONSTRAINT_SUPPORT,X) are supported,
+** where X is an integer. If X is zero, then the [virtual table] whose
+** [xCreate] or [xConnect] method invoked [sqlite3_vtab_config()] does not
+** support constraints. In this configuration (which is the default) if
+** a call to the [xUpdate] method returns [SQLITE_CONSTRAINT], then the entire
+** statement is rolled back as if [ON CONFLICT | OR ABORT] had been
+** specified as part of the users SQL statement, regardless of the actual
+** ON CONFLICT mode specified.
+**
+** If X is non-zero, then the virtual table implementation guarantees
+** that if [xUpdate] returns [SQLITE_CONSTRAINT], it will do so before
+** any modifications to internal or persistent data structures have been made.
+** If the [ON CONFLICT] mode is ABORT, FAIL, IGNORE or ROLLBACK, SQLite
+** is able to roll back a statement or database transaction, and abandon
+** or continue processing the current SQL statement as appropriate.
+** If the ON CONFLICT mode is REPLACE and the [xUpdate] method returns
+** [SQLITE_CONSTRAINT], SQLite handles this as if the ON CONFLICT mode
+** had been ABORT.
+**
+** Virtual table implementations that are required to handle OR REPLACE
+** must do so within the [xUpdate] method. If a call to the
+** [sqlite3_vtab_on_conflict()] function indicates that the current ON
+** CONFLICT policy is REPLACE, the virtual table implementation should
+** silently replace the appropriate rows within the xUpdate callback and
+** return SQLITE_OK. Or, if this is not possible, it may return
+** SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT
+** constraint handling.
+** </dl>
+*/
+#define SQLITE_VTAB_CONSTRAINT_SUPPORT 1
+
+/*
+** CAPI3REF: Determine The Virtual Table Conflict Policy
+**
+** This function may only be called from within a call to the [xUpdate] method
+** of a [virtual table] implementation for an INSERT or UPDATE operation. ^The
+** value returned is one of [SQLITE_ROLLBACK], [SQLITE_IGNORE], [SQLITE_FAIL],
+** [SQLITE_ABORT], or [SQLITE_REPLACE], according to the [ON CONFLICT] mode
+** of the SQL statement that triggered the call to the [xUpdate] method of the
+** [virtual table].
+*/
+SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *);
+
+/*
+** CAPI3REF: Conflict resolution modes
+**
+** These constants are returned by [sqlite3_vtab_on_conflict()] to
+** inform a [virtual table] implementation what the [ON CONFLICT] mode
+** is for the SQL statement being evaluated.
+**
+** Note that the [SQLITE_IGNORE] constant is also used as a potential
+** return value from the [sqlite3_set_authorizer()] callback and that
+** [SQLITE_ABORT] is also a [result code].
+*/
+#define SQLITE_ROLLBACK 1
+/* #define SQLITE_IGNORE 2 // Also used by sqlite3_authorizer() callback */
+#define SQLITE_FAIL 3
+/* #define SQLITE_ABORT 4 // Also an error code */
+#define SQLITE_REPLACE 5
+
+
+
+/*
** Undo the hack that converts floating point types to integer for
** builds on processors without floating point support.
*/
diff --git a/dist/sqlite3.h.orig b/dist/sqlite3.h.orig
index 66c2e21..fc9cd07 100644
--- a/dist/sqlite3.h.orig
+++ b/dist/sqlite3.h.orig
@@ -107,9 +107,9 @@
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
-#define SQLITE_VERSION "3.7.4"
-#define SQLITE_VERSION_NUMBER 3007004
-#define SQLITE_SOURCE_ID "2011-02-23 14:33:31 8609a15dfad23a7c5311b52617d5c4818c0b8d1e"
+#define SQLITE_VERSION "3.7.10"
+#define SQLITE_VERSION_NUMBER 3007010
+#define SQLITE_SOURCE_ID "2012-01-16 13:28:40 ebd01a8deffb5024a5d7494eef800d2366d97204"
/*
** CAPI3REF: Run-Time Library Version Numbers
@@ -177,7 +177,7 @@
** CAPI3REF: Test To See If The Library Is Threadsafe
**
** ^The sqlite3_threadsafe() function returns zero if and only if
-** SQLite was compiled mutexing code omitted due to the
+** SQLite was compiled with mutexing code omitted due to the
** [SQLITE_THREADSAFE] compile-time option being set to 0.
**
** SQLite can be compiled with or without mutexes. When
@@ -310,7 +310,7 @@
** argument. ^If the callback function of the 3rd argument to
** sqlite3_exec() is not NULL, then it is invoked for each result row
** coming out of the evaluated SQL statements. ^The 4th argument to
-** to sqlite3_exec() is relayed through to the 1st argument of each
+** sqlite3_exec() is relayed through to the 1st argument of each
** callback invocation. ^If the callback pointer to sqlite3_exec()
** is NULL, then no callback is ever invoked and result rows are
** ignored.
@@ -371,11 +371,12 @@
** KEYWORDS: {result code} {result codes}
**
** Many SQLite functions return an integer result code from the set shown
-** here in order to indicates success or failure.
+** here in order to indicate success or failure.
**
** New error codes may be added in future versions of SQLite.
**
-** See also: [SQLITE_IOERR_READ | extended result codes]
+** See also: [SQLITE_IOERR_READ | extended result codes],
+** [sqlite3_vtab_on_conflict()] [SQLITE_ROLLBACK | result codes].
*/
#define SQLITE_OK 0 /* Successful result */
/* beginning-of-error-codes */
@@ -390,7 +391,7 @@
#define SQLITE_INTERRUPT 9 /* Operation terminated by sqlite3_interrupt()*/
#define SQLITE_IOERR 10 /* Some kind of disk I/O error occurred */
#define SQLITE_CORRUPT 11 /* The database disk image is malformed */
-#define SQLITE_NOTFOUND 12 /* NOT USED. Table or record not found */
+#define SQLITE_NOTFOUND 12 /* Unknown opcode in sqlite3_file_control() */
#define SQLITE_FULL 13 /* Insertion failed because database is full */
#define SQLITE_CANTOPEN 14 /* Unable to open the database file */
#define SQLITE_PROTOCOL 15 /* Database lock protocol error */
@@ -452,17 +453,21 @@
#define SQLITE_IOERR_SHMOPEN (SQLITE_IOERR | (18<<8))
#define SQLITE_IOERR_SHMSIZE (SQLITE_IOERR | (19<<8))
#define SQLITE_IOERR_SHMLOCK (SQLITE_IOERR | (20<<8))
+#define SQLITE_IOERR_SHMMAP (SQLITE_IOERR | (21<<8))
+#define SQLITE_IOERR_SEEK (SQLITE_IOERR | (22<<8))
#define SQLITE_LOCKED_SHAREDCACHE (SQLITE_LOCKED | (1<<8))
#define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8))
#define SQLITE_CANTOPEN_NOTEMPDIR (SQLITE_CANTOPEN | (1<<8))
+#define SQLITE_CORRUPT_VTAB (SQLITE_CORRUPT | (1<<8))
+#define SQLITE_READONLY_RECOVERY (SQLITE_READONLY | (1<<8))
+#define SQLITE_READONLY_CANTLOCK (SQLITE_READONLY | (2<<8))
/*
** CAPI3REF: Flags For File Open Operations
**
** These bit values are intended for use in the
** 3rd parameter to the [sqlite3_open_v2()] interface and
-** in the 4th parameter to the xOpen method of the
-** [sqlite3_vfs] object.
+** in the 4th parameter to the [sqlite3_vfs.xOpen] method.
*/
#define SQLITE_OPEN_READONLY 0x00000001 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_READWRITE 0x00000002 /* Ok for sqlite3_open_v2() */
@@ -470,6 +475,7 @@
#define SQLITE_OPEN_DELETEONCLOSE 0x00000008 /* VFS only */
#define SQLITE_OPEN_EXCLUSIVE 0x00000010 /* VFS only */
#define SQLITE_OPEN_AUTOPROXY 0x00000020 /* VFS only */
+#define SQLITE_OPEN_URI 0x00000040 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_MAIN_DB 0x00000100 /* VFS only */
#define SQLITE_OPEN_TEMP_DB 0x00000200 /* VFS only */
#define SQLITE_OPEN_TRANSIENT_DB 0x00000400 /* VFS only */
@@ -483,6 +489,8 @@
#define SQLITE_OPEN_PRIVATECACHE 0x00040000 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_WAL 0x00080000 /* VFS only */
+/* Reserved: 0x00F00000 */
+
/*
** CAPI3REF: Device Characteristics
**
@@ -501,7 +509,11 @@
** first then the size of the file is extended, never the other
** way around. The SQLITE_IOCAP_SEQUENTIAL property means that
** information is written to disk in the same order as calls
-** to xWrite().
+** to xWrite(). The SQLITE_IOCAP_POWERSAFE_OVERWRITE property means that
+** after reboot following a crash or power loss, the only bytes in a
+** file that were written at the application level might have changed
+** and that adjacent bytes, even bytes within the same sector are
+** guaranteed to be unchanged.
*/
#define SQLITE_IOCAP_ATOMIC 0x00000001
#define SQLITE_IOCAP_ATOMIC512 0x00000002
@@ -515,6 +527,7 @@
#define SQLITE_IOCAP_SAFE_APPEND 0x00000200
#define SQLITE_IOCAP_SEQUENTIAL 0x00000400
#define SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN 0x00000800
+#define SQLITE_IOCAP_POWERSAFE_OVERWRITE 0x00001000
/*
** CAPI3REF: File Locking Levels
@@ -578,17 +591,18 @@
/*
** CAPI3REF: OS Interface File Virtual Methods Object
**
-** Every file opened by the [sqlite3_vfs] xOpen method populates an
+** Every file opened by the [sqlite3_vfs.xOpen] method populates an
** [sqlite3_file] object (or, more commonly, a subclass of the
** [sqlite3_file] object) with a pointer to an instance of this object.
** This object defines the methods used to perform various operations
** against the open file represented by the [sqlite3_file] object.
**
-** If the xOpen method sets the sqlite3_file.pMethods element
+** If the [sqlite3_vfs.xOpen] method sets the sqlite3_file.pMethods element
** to a non-NULL pointer, then the sqlite3_io_methods.xClose method
-** may be invoked even if the xOpen reported that it failed. The
-** only way to prevent a call to xClose following a failed xOpen
-** is for the xOpen to set the sqlite3_file.pMethods element to NULL.
+** may be invoked even if the [sqlite3_vfs.xOpen] reported that it failed. The
+** only way to prevent a call to xClose following a failed [sqlite3_vfs.xOpen]
+** is for the [sqlite3_vfs.xOpen] to set the sqlite3_file.pMethods element
+** to NULL.
**
** The flags argument to xSync may be one of [SQLITE_SYNC_NORMAL] or
** [SQLITE_SYNC_FULL]. The first choice is the normal fsync().
@@ -622,7 +636,9 @@
** core reserves all opcodes less than 100 for its own use.
** A [SQLITE_FCNTL_LOCKSTATE | list of opcodes] less than 100 is available.
** Applications that define a custom xFileControl method should use opcodes
-** greater than 100 to avoid conflicts.
+** greater than 100 to avoid conflicts. VFS implementations should
+** return [SQLITE_NOTFOUND] for file control opcodes that they do not
+** recognize.
**
** The xSectorSize() method returns the sector size of the
** device that underlies the file. The sector size is the
@@ -715,15 +731,90 @@
** for the nominated database. Allocating database file space in large
** chunks (say 1MB at a time), may reduce file-system fragmentation and
** improve performance on some systems.
+**
+** The [SQLITE_FCNTL_FILE_POINTER] opcode is used to obtain a pointer
+** to the [sqlite3_file] object associated with a particular database
+** connection. See the [sqlite3_file_control()] documentation for
+** additional information.
+**
+** ^(The [SQLITE_FCNTL_SYNC_OMITTED] opcode is generated internally by
+** SQLite and sent to all VFSes in place of a call to the xSync method
+** when the database connection has [PRAGMA synchronous] set to OFF.)^
+** Some specialized VFSes need this signal in order to operate correctly
+** when [PRAGMA synchronous | PRAGMA synchronous=OFF] is set, but most
+** VFSes do not need this signal and should silently ignore this opcode.
+** Applications should not call [sqlite3_file_control()] with this
+** opcode as doing so may disrupt the operation of the specialized VFSes
+** that do require it.
+**
+** ^The [SQLITE_FCNTL_WIN32_AV_RETRY] opcode is used to configure automatic
+** retry counts and intervals for certain disk I/O operations for the
+** windows [VFS] in order to provide robustness in the presence of
+** anti-virus programs. By default, the windows VFS will retry file read,
+** file write, and file delete operations up to 10 times, with a delay
+** of 25 milliseconds before the first retry and with the delay increasing
+** by an additional 25 milliseconds with each subsequent retry. This
+** opcode allows these two values (10 retries and 25 milliseconds of delay)
+** to be adjusted. The values are changed for all database connections
+** within the same process. The argument is a pointer to an array of two
+** integers where the first integer i the new retry count and the second
+** integer is the delay. If either integer is negative, then the setting
+** is not changed but instead the prior value of that setting is written
+** into the array entry, allowing the current retry settings to be
+** interrogated. The zDbName parameter is ignored.
+**
+** ^The [SQLITE_FCNTL_PERSIST_WAL] opcode is used to set or query the
+** persistent [WAL | Write AHead Log] setting. By default, the auxiliary
+** write ahead log and shared memory files used for transaction control
+** are automatically deleted when the latest connection to the database
+** closes. Setting persistent WAL mode causes those files to persist after
+** close. Persisting the files is useful when other processes that do not
+** have write permission on the directory containing the database file want
+** to read the database file, as the WAL and shared memory files must exist
+** in order for the database to be readable. The fourth parameter to
+** [sqlite3_file_control()] for this opcode should be a pointer to an integer.
+** That integer is 0 to disable persistent WAL mode or 1 to enable persistent
+** WAL mode. If the integer is -1, then it is overwritten with the current
+** WAL persistence setting.
+**
+** ^The [SQLITE_FCNTL_POWERSAFE_OVERWRITE] opcode is used to set or query the
+** persistent "powersafe-overwrite" or "PSOW" setting. The PSOW setting
+** determines the [SQLITE_IOCAP_POWERSAFE_OVERWRITE] bit of the
+** xDeviceCharacteristics methods. The fourth parameter to
+** [sqlite3_file_control()] for this opcode should be a pointer to an integer.
+** That integer is 0 to disable zero-damage mode or 1 to enable zero-damage
+** mode. If the integer is -1, then it is overwritten with the current
+** zero-damage mode setting.
+**
+** ^The [SQLITE_FCNTL_OVERWRITE] opcode is invoked by SQLite after opening
+** a write transaction to indicate that, unless it is rolled back for some
+** reason, the entire database file will be overwritten by the current
+** transaction. This is used by VACUUM operations.
+**
+** ^The [SQLITE_FCNTL_VFSNAME] opcode can be used to obtain the names of
+** all [VFSes] in the VFS stack. The names are of all VFS shims and the
+** final bottom-level VFS are written into memory obtained from
+** [sqlite3_malloc()] and the result is stored in the char* variable
+** that the fourth parameter of [sqlite3_file_control()] points to.
+** The caller is responsible for freeing the memory when done. As with
+** all file-control actions, there is no guarantee that this will actually
+** do anything. Callers should initialize the char* variable to a NULL
+** pointer in case this file-control is not implemented. This file-control
+** is intended for diagnostic use only.
*/
-#define SQLITE_FCNTL_LOCKSTATE 1
-#define SQLITE_GET_LOCKPROXYFILE 2
-#define SQLITE_SET_LOCKPROXYFILE 3
-#define SQLITE_LAST_ERRNO 4
-#define SQLITE_FCNTL_SIZE_HINT 5
-#define SQLITE_FCNTL_CHUNK_SIZE 6
-#define SQLITE_FCNTL_FILE_POINTER 7
-
+#define SQLITE_FCNTL_LOCKSTATE 1
+#define SQLITE_GET_LOCKPROXYFILE 2
+#define SQLITE_SET_LOCKPROXYFILE 3
+#define SQLITE_LAST_ERRNO 4
+#define SQLITE_FCNTL_SIZE_HINT 5
+#define SQLITE_FCNTL_CHUNK_SIZE 6
+#define SQLITE_FCNTL_FILE_POINTER 7
+#define SQLITE_FCNTL_SYNC_OMITTED 8
+#define SQLITE_FCNTL_WIN32_AV_RETRY 9
+#define SQLITE_FCNTL_PERSIST_WAL 10
+#define SQLITE_FCNTL_OVERWRITE 11
+#define SQLITE_FCNTL_VFSNAME 12
+#define SQLITE_FCNTL_POWERSAFE_OVERWRITE 13
/*
** CAPI3REF: Mutex Handle
@@ -742,7 +833,8 @@
**
** An instance of the sqlite3_vfs object defines the interface between
** the SQLite core and the underlying operating system. The "vfs"
-** in the name of the object stands for "virtual file system".
+** in the name of the object stands for "virtual file system". See
+** the [VFS | VFS documentation] for further information.
**
** The value of the iVersion field is initially 1 but may be larger in
** future versions of SQLite. Additional fields may be appended to this
@@ -771,12 +863,13 @@
** The zName field holds the name of the VFS module. The name must
** be unique across all VFS modules.
**
+** [[sqlite3_vfs.xOpen]]
** ^SQLite guarantees that the zFilename parameter to xOpen
** is either a NULL pointer or string obtained
** from xFullPathname() with an optional suffix added.
** ^If a suffix is added to the zFilename parameter, it will
** consist of a single "-" character followed by no more than
-** 10 alphanumeric and/or "-" characters.
+** 11 alphanumeric and/or "-" characters.
** ^SQLite further guarantees that
** the string will be valid and unchanged until xClose() is
** called. Because of the previous sentence,
@@ -848,6 +941,7 @@
** element will be valid after xOpen returns regardless of the success
** or failure of the xOpen call.
**
+** [[sqlite3_vfs.xAccess]]
** ^The flags argument to xAccess() may be [SQLITE_ACCESS_EXISTS]
** to test for the existence of a file, or [SQLITE_ACCESS_READWRITE] to
** test whether a file is readable and writable, or [SQLITE_ACCESS_READ]
@@ -872,16 +966,29 @@
** method returns a Julian Day Number for the current date and time as
** a floating point value.
** ^The xCurrentTimeInt64() method returns, as an integer, the Julian
-** Day Number multipled by 86400000 (the number of milliseconds in
+** Day Number multiplied by 86400000 (the number of milliseconds in
** a 24-hour day).
** ^SQLite will use the xCurrentTimeInt64() method to get the current
** date and time if that method is available (if iVersion is 2 or
** greater and the function pointer is not NULL) and will fall back
** to xCurrentTime() if xCurrentTimeInt64() is unavailable.
+**
+** ^The xSetSystemCall(), xGetSystemCall(), and xNestSystemCall() interfaces
+** are not used by the SQLite core. These optional interfaces are provided
+** by some VFSes to facilitate testing of the VFS code. By overriding
+** system calls with functions under its control, a test program can
+** simulate faults and error conditions that would otherwise be difficult
+** or impossible to induce. The set of system calls that can be overridden
+** varies from one VFS to another, and from one version of the same VFS to the
+** next. Applications that use these interfaces must be prepared for any
+** or all of these interfaces to be NULL or for their behavior to change
+** from one release to the next. Applications must not attempt to access
+** any of these methods if the iVersion of the VFS is less than 3.
*/
typedef struct sqlite3_vfs sqlite3_vfs;
+typedef void (*sqlite3_syscall_ptr)(void);
struct sqlite3_vfs {
- int iVersion; /* Structure version number (currently 2) */
+ int iVersion; /* Structure version number (currently 3) */
int szOsFile; /* Size of subclassed sqlite3_file */
int mxPathname; /* Maximum file pathname length */
sqlite3_vfs *pNext; /* Next registered VFS */
@@ -907,6 +1014,13 @@
int (*xCurrentTimeInt64)(sqlite3_vfs*, sqlite3_int64*);
/*
** The methods above are in versions 1 and 2 of the sqlite_vfs object.
+ ** Those below are for version 3 and greater.
+ */
+ int (*xSetSystemCall)(sqlite3_vfs*, const char *zName, sqlite3_syscall_ptr);
+ sqlite3_syscall_ptr (*xGetSystemCall)(sqlite3_vfs*, const char *zName);
+ const char *(*xNextSystemCall)(sqlite3_vfs*, const char *zName);
+ /*
+ ** The methods above are in versions 1 through 3 of the sqlite_vfs object.
** New fields may be appended in figure versions. The iVersion
** value will increment whenever this happens.
*/
@@ -1074,9 +1188,9 @@
** implementation of an application-defined [sqlite3_os_init()].
**
** The first argument to sqlite3_config() is an integer
-** [SQLITE_CONFIG_SINGLETHREAD | configuration option] that determines
+** [configuration option] that determines
** what property of SQLite is to be configured. Subsequent arguments
-** vary depending on the [SQLITE_CONFIG_SINGLETHREAD | configuration option]
+** vary depending on the [configuration option]
** in the first argument.
**
** ^When a configuration option is set, sqlite3_config() returns [SQLITE_OK].
@@ -1091,17 +1205,12 @@
** The sqlite3_db_config() interface is used to make configuration
** changes to a [database connection]. The interface is similar to
** [sqlite3_config()] except that the changes apply to a single
-** [database connection] (specified in the first argument). The
-** sqlite3_db_config() interface should only be used immediately after
-** the database connection is created using [sqlite3_open()],
-** [sqlite3_open16()], or [sqlite3_open_v2()].
+** [database connection] (specified in the first argument).
**
** The second argument to sqlite3_db_config(D,V,...) is the
-** configuration verb - an integer code that indicates what
-** aspect of the [database connection] is being configured.
-** The only choice for this value is [SQLITE_DBCONFIG_LOOKASIDE].
-** New verbs are likely to be added in future releases of SQLite.
-** Additional arguments depend on the verb.
+** [SQLITE_DBCONFIG_LOOKASIDE | configuration verb] - an integer code
+** that indicates what aspect of the [database connection] is being configured.
+** Subsequent arguments vary depending on the configuration verb.
**
** ^Calls to sqlite3_db_config() return SQLITE_OK if and only if
** the call is considered successful.
@@ -1133,16 +1242,10 @@
** order to verify that SQLite recovers gracefully from such
** conditions.
**
-** The xMalloc and xFree methods must work like the
-** malloc() and free() functions from the standard C library.
-** The xRealloc method must work like realloc() from the standard C library
-** with the exception that if the second argument to xRealloc is zero,
-** xRealloc must be a no-op - it must not perform any allocation or
-** deallocation. ^SQLite guarantees that the second argument to
+** The xMalloc, xRealloc, and xFree methods must work like the
+** malloc(), realloc() and free() functions from the standard C library.
+** ^SQLite guarantees that the second argument to
** xRealloc is always a value returned by a prior call to xRoundup.
-** And so in cases where xRoundup always returns a positive number,
-** xRealloc can perform exactly as the standard library realloc() and
-** still be in compliance with this specification.
**
** xSize should return the allocated size of a memory allocation
** previously obtained from xMalloc or xRealloc. The allocated size
@@ -1191,6 +1294,7 @@
/*
** CAPI3REF: Configuration Options
+** KEYWORDS: {configuration option}
**
** These constants are the available integer configuration options that
** can be passed as the first argument to the [sqlite3_config()] interface.
@@ -1203,7 +1307,7 @@
** is invoked.
**
** <dl>
-** <dt>SQLITE_CONFIG_SINGLETHREAD</dt>
+** [[SQLITE_CONFIG_SINGLETHREAD]] <dt>SQLITE_CONFIG_SINGLETHREAD</dt>
** <dd>There are no arguments to this option. ^This option sets the
** [threading mode] to Single-thread. In other words, it disables
** all mutexing and puts SQLite into a mode where it can only be used
@@ -1214,7 +1318,7 @@
** [SQLITE_ERROR] if called with the SQLITE_CONFIG_SINGLETHREAD
** configuration option.</dd>
**
-** <dt>SQLITE_CONFIG_MULTITHREAD</dt>
+** [[SQLITE_CONFIG_MULTITHREAD]] <dt>SQLITE_CONFIG_MULTITHREAD</dt>
** <dd>There are no arguments to this option. ^This option sets the
** [threading mode] to Multi-thread. In other words, it disables
** mutexing on [database connection] and [prepared statement] objects.
@@ -1228,7 +1332,7 @@
** [sqlite3_config()] will return [SQLITE_ERROR] if called with the
** SQLITE_CONFIG_MULTITHREAD configuration option.</dd>
**
-** <dt>SQLITE_CONFIG_SERIALIZED</dt>
+** [[SQLITE_CONFIG_SERIALIZED]] <dt>SQLITE_CONFIG_SERIALIZED</dt>
** <dd>There are no arguments to this option. ^This option sets the
** [threading mode] to Serialized. In other words, this option enables
** all mutexes including the recursive
@@ -1244,7 +1348,7 @@
** [sqlite3_config()] will return [SQLITE_ERROR] if called with the
** SQLITE_CONFIG_SERIALIZED configuration option.</dd>
**
-** <dt>SQLITE_CONFIG_MALLOC</dt>
+** [[SQLITE_CONFIG_MALLOC]] <dt>SQLITE_CONFIG_MALLOC</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mem_methods] structure. The argument specifies
** alternative low-level memory allocation routines to be used in place of
@@ -1252,7 +1356,7 @@
** its own private copy of the content of the [sqlite3_mem_methods] structure
** before the [sqlite3_config()] call returns.</dd>
**
-** <dt>SQLITE_CONFIG_GETMALLOC</dt>
+** [[SQLITE_CONFIG_GETMALLOC]] <dt>SQLITE_CONFIG_GETMALLOC</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mem_methods] structure. The [sqlite3_mem_methods]
** structure is filled with the currently defined memory allocation routines.)^
@@ -1260,7 +1364,7 @@
** routines with a wrapper that simulations memory allocation failure or
** tracks memory usage, for example. </dd>
**
-** <dt>SQLITE_CONFIG_MEMSTATUS</dt>
+** [[SQLITE_CONFIG_MEMSTATUS]] <dt>SQLITE_CONFIG_MEMSTATUS</dt>
** <dd> ^This option takes single argument of type int, interpreted as a
** boolean, which enables or disables the collection of memory allocation
** statistics. ^(When memory allocation statistics are disabled, the
@@ -1276,10 +1380,10 @@
** allocation statistics are disabled by default.
** </dd>
**
-** <dt>SQLITE_CONFIG_SCRATCH</dt>
+** [[SQLITE_CONFIG_SCRATCH]] <dt>SQLITE_CONFIG_SCRATCH</dt>
** <dd> ^This option specifies a static memory buffer that SQLite can use for
** scratch memory. There are three arguments: A pointer an 8-byte
-** aligned memory buffer from which the scrach allocations will be
+** aligned memory buffer from which the scratch allocations will be
** drawn, the size of each scratch allocation (sz),
** and the maximum number of scratch allocations (N). The sz
** argument must be a multiple of 16.
@@ -1292,11 +1396,11 @@
** scratch memory beyond what is provided by this configuration option, then
** [sqlite3_malloc()] will be used to obtain the memory needed.</dd>
**
-** <dt>SQLITE_CONFIG_PAGECACHE</dt>
+** [[SQLITE_CONFIG_PAGECACHE]] <dt>SQLITE_CONFIG_PAGECACHE</dt>
** <dd> ^This option specifies a static memory buffer that SQLite can use for
-** the database page cache with the default page cache implemenation.
+** the database page cache with the default page cache implementation.
** This configuration should not be used if an application-define page
-** cache implementation is loaded using the SQLITE_CONFIG_PCACHE option.
+** cache implementation is loaded using the SQLITE_CONFIG_PCACHE2 option.
** There are three arguments to this option: A pointer to 8-byte aligned
** memory, the size of each page buffer (sz), and the number of pages (N).
** The sz argument should be the size of the largest database page
@@ -1313,7 +1417,7 @@
** be aligned to an 8-byte boundary or subsequent behavior of SQLite
** will be undefined.</dd>
**
-** <dt>SQLITE_CONFIG_HEAP</dt>
+** [[SQLITE_CONFIG_HEAP]] <dt>SQLITE_CONFIG_HEAP</dt>
** <dd> ^This option specifies a static memory buffer that SQLite will use
** for all of its dynamic memory allocation needs beyond those provided
** for by [SQLITE_CONFIG_SCRATCH] and [SQLITE_CONFIG_PAGECACHE].
@@ -1326,9 +1430,11 @@
** [SQLITE_ENABLE_MEMSYS5] are defined, then the alternative memory
** allocator is engaged to handle all of SQLites memory allocation needs.
** The first pointer (the memory pointer) must be aligned to an 8-byte
-** boundary or subsequent behavior of SQLite will be undefined.</dd>
+** boundary or subsequent behavior of SQLite will be undefined.
+** The minimum allocation size is capped at 2**12. Reasonable values
+** for the minimum allocation size are 2**5 through 2**8.</dd>
**
-** <dt>SQLITE_CONFIG_MUTEX</dt>
+** [[SQLITE_CONFIG_MUTEX]] <dt>SQLITE_CONFIG_MUTEX</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mutex_methods] structure. The argument specifies
** alternative low-level mutex routines to be used in place
@@ -1340,7 +1446,7 @@
** [sqlite3_config()] with the SQLITE_CONFIG_MUTEX configuration option will
** return [SQLITE_ERROR].</dd>
**
-** <dt>SQLITE_CONFIG_GETMUTEX</dt>
+** [[SQLITE_CONFIG_GETMUTEX]] <dt>SQLITE_CONFIG_GETMUTEX</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mutex_methods] structure. The
** [sqlite3_mutex_methods]
@@ -1353,7 +1459,7 @@
** [sqlite3_config()] with the SQLITE_CONFIG_GETMUTEX configuration option will
** return [SQLITE_ERROR].</dd>
**
-** <dt>SQLITE_CONFIG_LOOKASIDE</dt>
+** [[SQLITE_CONFIG_LOOKASIDE]] <dt>SQLITE_CONFIG_LOOKASIDE</dt>
** <dd> ^(This option takes two arguments that determine the default
** memory allocation for the lookaside memory allocator on each
** [database connection]. The first argument is the
@@ -1363,18 +1469,18 @@
** verb to [sqlite3_db_config()] can be used to change the lookaside
** configuration on individual connections.)^ </dd>
**
-** <dt>SQLITE_CONFIG_PCACHE</dt>
+** [[SQLITE_CONFIG_PCACHE2]] <dt>SQLITE_CONFIG_PCACHE2</dt>
** <dd> ^(This option takes a single argument which is a pointer to
-** an [sqlite3_pcache_methods] object. This object specifies the interface
+** an [sqlite3_pcache_methods2] object. This object specifies the interface
** to a custom page cache implementation.)^ ^SQLite makes a copy of the
** object and uses it for page cache memory allocations.</dd>
**
-** <dt>SQLITE_CONFIG_GETPCACHE</dt>
+** [[SQLITE_CONFIG_GETPCACHE2]] <dt>SQLITE_CONFIG_GETPCACHE2</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
-** [sqlite3_pcache_methods] object. SQLite copies of the current
+** [sqlite3_pcache_methods2] object. SQLite copies of the current
** page cache implementation into that object.)^ </dd>
**
-** <dt>SQLITE_CONFIG_LOG</dt>
+** [[SQLITE_CONFIG_LOG]] <dt>SQLITE_CONFIG_LOG</dt>
** <dd> ^The SQLITE_CONFIG_LOG option takes two arguments: a pointer to a
** function with a call signature of void(*)(void*,int,const char*),
** and a pointer to void. ^If the function pointer is not NULL, it is
@@ -1392,6 +1498,23 @@
** In a multi-threaded application, the application-defined logger
** function must be threadsafe. </dd>
**
+** [[SQLITE_CONFIG_URI]] <dt>SQLITE_CONFIG_URI
+** <dd> This option takes a single argument of type int. If non-zero, then
+** URI handling is globally enabled. If the parameter is zero, then URI handling
+** is globally disabled. If URI handling is globally enabled, all filenames
+** passed to [sqlite3_open()], [sqlite3_open_v2()], [sqlite3_open16()] or
+** specified as part of [ATTACH] commands are interpreted as URIs, regardless
+** of whether or not the [SQLITE_OPEN_URI] flag is set when the database
+** connection is opened. If it is globally disabled, filenames are
+** only interpreted as URIs if the SQLITE_OPEN_URI flag is set when the
+** database connection is opened. By default, URI handling is globally
+** disabled. The default value may be changed by compiling with the
+** [SQLITE_USE_URI] symbol defined.
+**
+** [[SQLITE_CONFIG_PCACHE]] [[SQLITE_CONFIG_GETPCACHE]]
+** <dt>SQLITE_CONFIG_PCACHE and SQLITE_CONFNIG_GETPCACHE
+** <dd> These options are obsolete and should not be used by new code.
+** They are retained for backwards compatibility but are now no-ops.
** </dl>
*/
#define SQLITE_CONFIG_SINGLETHREAD 1 /* nil */
@@ -1407,9 +1530,12 @@
#define SQLITE_CONFIG_GETMUTEX 11 /* sqlite3_mutex_methods* */
/* previously SQLITE_CONFIG_CHUNKALLOC 12 which is now unused. */
#define SQLITE_CONFIG_LOOKASIDE 13 /* int int */
-#define SQLITE_CONFIG_PCACHE 14 /* sqlite3_pcache_methods* */
-#define SQLITE_CONFIG_GETPCACHE 15 /* sqlite3_pcache_methods* */
+#define SQLITE_CONFIG_PCACHE 14 /* no-op */
+#define SQLITE_CONFIG_GETPCACHE 15 /* no-op */
#define SQLITE_CONFIG_LOG 16 /* xFunc, void* */
+#define SQLITE_CONFIG_URI 17 /* int */
+#define SQLITE_CONFIG_PCACHE2 18 /* sqlite3_pcache_methods2* */
+#define SQLITE_CONFIG_GETPCACHE2 19 /* sqlite3_pcache_methods2* */
/*
** CAPI3REF: Database Connection Configuration Options
@@ -1429,7 +1555,7 @@
** <dd> ^This option takes three additional arguments that determine the
** [lookaside memory allocator] configuration for the [database connection].
** ^The first argument (the third parameter to [sqlite3_db_config()] is a
-** pointer to an memory buffer to use for lookaside memory.
+** pointer to a memory buffer to use for lookaside memory.
** ^The first argument after the SQLITE_DBCONFIG_LOOKASIDE verb
** may be NULL in which case SQLite will allocate the
** lookaside buffer itself using [sqlite3_malloc()]. ^The second argument is the
@@ -1447,9 +1573,31 @@
** memory is in use leaves the configuration unchanged and returns
** [SQLITE_BUSY].)^</dd>
**
+** <dt>SQLITE_DBCONFIG_ENABLE_FKEY</dt>
+** <dd> ^This option is used to enable or disable the enforcement of
+** [foreign key constraints]. There should be two additional arguments.
+** The first argument is an integer which is 0 to disable FK enforcement,
+** positive to enable FK enforcement or negative to leave FK enforcement
+** unchanged. The second parameter is a pointer to an integer into which
+** is written 0 or 1 to indicate whether FK enforcement is off or on
+** following this call. The second parameter may be a NULL pointer, in
+** which case the FK enforcement setting is not reported back. </dd>
+**
+** <dt>SQLITE_DBCONFIG_ENABLE_TRIGGER</dt>
+** <dd> ^This option is used to enable or disable [CREATE TRIGGER | triggers].
+** There should be two additional arguments.
+** The first argument is an integer which is 0 to disable triggers,
+** positive to enable triggers or negative to leave the setting unchanged.
+** The second parameter is a pointer to an integer into which
+** is written 0 or 1 to indicate whether triggers are disabled or enabled
+** following this call. The second parameter may be a NULL pointer, in
+** which case the trigger setting is not reported back. </dd>
+**
** </dl>
*/
-#define SQLITE_DBCONFIG_LOOKASIDE 1001 /* void* int int */
+#define SQLITE_DBCONFIG_LOOKASIDE 1001 /* void* int int */
+#define SQLITE_DBCONFIG_ENABLE_FKEY 1002 /* int int* */
+#define SQLITE_DBCONFIG_ENABLE_TRIGGER 1003 /* int int* */
/*
@@ -1473,13 +1621,17 @@
**
** ^This routine returns the [rowid] of the most recent
** successful [INSERT] into the database from the [database connection]
-** in the first argument. ^If no successful [INSERT]s
+** in the first argument. ^As of SQLite version 3.7.7, this routines
+** records the last insert rowid of both ordinary tables and [virtual tables].
+** ^If no successful [INSERT]s
** have ever occurred on that database connection, zero is returned.
**
-** ^(If an [INSERT] occurs within a trigger, then the [rowid] of the inserted
-** row is returned by this routine as long as the trigger is running.
-** But once the trigger terminates, the value returned by this routine
-** reverts to the last value inserted before the trigger fired.)^
+** ^(If an [INSERT] occurs within a trigger or within a [virtual table]
+** method, then this routine will return the [rowid] of the inserted
+** row as long as the trigger or virtual table method is running.
+** But once the trigger or virtual table method ends, the value returned
+** by this routine reverts to what it was before the trigger or virtual
+** table method began.)^
**
** ^An [INSERT] that fails due to a constraint violation is not a
** successful [INSERT] and does not change the value returned by this
@@ -1842,7 +1994,7 @@
** NULL pointer if [sqlite3_malloc()] is unable to allocate enough
** memory to hold the resulting string.
**
-** ^(In sqlite3_snprintf() routine is similar to "snprintf()" from
+** ^(The sqlite3_snprintf() routine is similar to "snprintf()" from
** the standard C library. The result is written into the
** buffer supplied as the second parameter whose size is given by
** the first parameter. Note that the order of the
@@ -1861,12 +2013,14 @@
** the zero terminator. So the longest string that can be completely
** written will be n-1 characters.
**
+** ^The sqlite3_vsnprintf() routine is a varargs version of sqlite3_snprintf().
+**
** These routines all implement some additional formatting
** options that are useful for constructing SQL statements.
** All of the usual printf() formatting options apply. In addition, there
** is are "%q", "%Q", and "%z" options.
**
-** ^(The %q option works like %s in that it substitutes a null-terminated
+** ^(The %q option works like %s in that it substitutes a nul-terminated
** string from the argument list. But %q also doubles every '\'' character.
** %q is designed for use inside a string literal.)^ By doubling each '\''
** character it escapes that character and allows it to be inserted into
@@ -1924,6 +2078,7 @@
SQLITE_API char *sqlite3_mprintf(const char*,...);
SQLITE_API char *sqlite3_vmprintf(const char*, va_list);
SQLITE_API char *sqlite3_snprintf(int,char*,const char*, ...);
+SQLITE_API char *sqlite3_vsnprintf(int,char*,const char*, va_list);
/*
** CAPI3REF: Memory Allocation Subsystem
@@ -2048,7 +2203,7 @@
/*
** CAPI3REF: Compile-Time Authorization Callbacks
**
-** ^This routine registers a authorizer callback with a particular
+** ^This routine registers an authorizer callback with a particular
** [database connection], supplied in the first argument.
** ^The authorizer callback is invoked as SQL statements are being compiled
** by [sqlite3_prepare()] or its variants [sqlite3_prepare_v2()],
@@ -2139,6 +2294,9 @@
** to signal SQLite whether or not the action is permitted. See the
** [sqlite3_set_authorizer | authorizer documentation] for additional
** information.
+**
+** Note that SQLITE_IGNORE is also used as a [SQLITE_ROLLBACK | return code]
+** from the [sqlite3_vtab_on_conflict()] interface.
*/
#define SQLITE_DENY 1 /* Abort the SQL statement with an error */
#define SQLITE_IGNORE 2 /* Don't allow access, but don't generate an error */
@@ -2261,7 +2419,7 @@
/*
** CAPI3REF: Opening A New Database Connection
**
-** ^These routines open an SQLite database file whose name is given by the
+** ^These routines open an SQLite database file as specified by the
** filename argument. ^The filename argument is interpreted as UTF-8 for
** sqlite3_open() and sqlite3_open_v2() and as UTF-16 in the native byte
** order for sqlite3_open16(). ^(A [database connection] handle is usually
@@ -2288,7 +2446,7 @@
** sqlite3_open_v2() can take one of
** the following three values, optionally combined with the
** [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX], [SQLITE_OPEN_SHAREDCACHE],
-** and/or [SQLITE_OPEN_PRIVATECACHE] flags:)^
+** [SQLITE_OPEN_PRIVATECACHE], and/or [SQLITE_OPEN_URI] flags:)^
**
** <dl>
** ^(<dt>[SQLITE_OPEN_READONLY]</dt>
@@ -2301,15 +2459,14 @@
** case the database must already exist, otherwise an error is returned.</dd>)^
**
** ^(<dt>[SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]</dt>
-** <dd>The database is opened for reading and writing, and is creates it if
+** <dd>The database is opened for reading and writing, and is created if
** it does not already exist. This is the behavior that is always used for
** sqlite3_open() and sqlite3_open16().</dd>)^
** </dl>
**
** If the 3rd parameter to sqlite3_open_v2() is not one of the
-** combinations shown above or one of the combinations shown above combined
-** with the [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX],
-** [SQLITE_OPEN_SHAREDCACHE] and/or [SQLITE_OPEN_PRIVATECACHE] flags,
+** combinations shown above optionally combined with other
+** [SQLITE_OPEN_READONLY | SQLITE_OPEN_* bits]
** then the behavior is undefined.
**
** ^If the [SQLITE_OPEN_NOMUTEX] flag is set, then the database connection
@@ -2324,6 +2481,11 @@
** [SQLITE_OPEN_PRIVATECACHE] flag causes the database connection to not
** participate in [shared cache mode] even if it is enabled.
**
+** ^The fourth parameter to sqlite3_open_v2() is the name of the
+** [sqlite3_vfs] object that defines the operating system interface that
+** the new database connection should use. ^If the fourth parameter is
+** a NULL pointer then the default [sqlite3_vfs] object is used.
+**
** ^If the filename is ":memory:", then a private, temporary in-memory database
** is created for the connection. ^This in-memory database will vanish when
** the database connection is closed. Future versions of SQLite might
@@ -2336,10 +2498,111 @@
** on-disk database will be created. ^This private database will be
** automatically deleted as soon as the database connection is closed.
**
-** ^The fourth parameter to sqlite3_open_v2() is the name of the
-** [sqlite3_vfs] object that defines the operating system interface that
-** the new database connection should use. ^If the fourth parameter is
-** a NULL pointer then the default [sqlite3_vfs] object is used.
+** [[URI filenames in sqlite3_open()]] <h3>URI Filenames</h3>
+**
+** ^If [URI filename] interpretation is enabled, and the filename argument
+** begins with "file:", then the filename is interpreted as a URI. ^URI
+** filename interpretation is enabled if the [SQLITE_OPEN_URI] flag is
+** set in the fourth argument to sqlite3_open_v2(), or if it has
+** been enabled globally using the [SQLITE_CONFIG_URI] option with the
+** [sqlite3_config()] method or by the [SQLITE_USE_URI] compile-time option.
+** As of SQLite version 3.7.7, URI filename interpretation is turned off
+** by default, but future releases of SQLite might enable URI filename
+** interpretation by default. See "[URI filenames]" for additional
+** information.
+**
+** URI filenames are parsed according to RFC 3986. ^If the URI contains an
+** authority, then it must be either an empty string or the string
+** "localhost". ^If the authority is not an empty string or "localhost", an
+** error is returned to the caller. ^The fragment component of a URI, if
+** present, is ignored.
+**
+** ^SQLite uses the path component of the URI as the name of the disk file
+** which contains the database. ^If the path begins with a '/' character,
+** then it is interpreted as an absolute path. ^If the path does not begin
+** with a '/' (meaning that the authority section is omitted from the URI)
+** then the path is interpreted as a relative path.
+** ^On windows, the first component of an absolute path
+** is a drive specification (e.g. "C:").
+**
+** [[core URI query parameters]]
+** The query component of a URI may contain parameters that are interpreted
+** either by SQLite itself, or by a [VFS | custom VFS implementation].
+** SQLite interprets the following three query parameters:
+**
+** <ul>
+** <li> <b>vfs</b>: ^The "vfs" parameter may be used to specify the name of
+** a VFS object that provides the operating system interface that should
+** be used to access the database file on disk. ^If this option is set to
+** an empty string the default VFS object is used. ^Specifying an unknown
+** VFS is an error. ^If sqlite3_open_v2() is used and the vfs option is
+** present, then the VFS specified by the option takes precedence over
+** the value passed as the fourth parameter to sqlite3_open_v2().
+**
+** <li> <b>mode</b>: ^(The mode parameter may be set to either "ro", "rw" or
+** "rwc". Attempting to set it to any other value is an error)^.
+** ^If "ro" is specified, then the database is opened for read-only
+** access, just as if the [SQLITE_OPEN_READONLY] flag had been set in the
+** third argument to sqlite3_prepare_v2(). ^If the mode option is set to
+** "rw", then the database is opened for read-write (but not create)
+** access, as if SQLITE_OPEN_READWRITE (but not SQLITE_OPEN_CREATE) had
+** been set. ^Value "rwc" is equivalent to setting both
+** SQLITE_OPEN_READWRITE and SQLITE_OPEN_CREATE. ^If sqlite3_open_v2() is
+** used, it is an error to specify a value for the mode parameter that is
+** less restrictive than that specified by the flags passed as the third
+** parameter.
+**
+** <li> <b>cache</b>: ^The cache parameter may be set to either "shared" or
+** "private". ^Setting it to "shared" is equivalent to setting the
+** SQLITE_OPEN_SHAREDCACHE bit in the flags argument passed to
+** sqlite3_open_v2(). ^Setting the cache parameter to "private" is
+** equivalent to setting the SQLITE_OPEN_PRIVATECACHE bit.
+** ^If sqlite3_open_v2() is used and the "cache" parameter is present in
+** a URI filename, its value overrides any behaviour requested by setting
+** SQLITE_OPEN_PRIVATECACHE or SQLITE_OPEN_SHAREDCACHE flag.
+** </ul>
+**
+** ^Specifying an unknown parameter in the query component of a URI is not an
+** error. Future versions of SQLite might understand additional query
+** parameters. See "[query parameters with special meaning to SQLite]" for
+** additional information.
+**
+** [[URI filename examples]] <h3>URI filename examples</h3>
+**
+** <table border="1" align=center cellpadding=5>
+** <tr><th> URI filenames <th> Results
+** <tr><td> file:data.db <td>
+** Open the file "data.db" in the current directory.
+** <tr><td> file:/home/fred/data.db<br>
+** file:///home/fred/data.db <br>
+** file://localhost/home/fred/data.db <br> <td>
+** Open the database file "/home/fred/data.db".
+** <tr><td> file://darkstar/home/fred/data.db <td>
+** An error. "darkstar" is not a recognized authority.
+** <tr><td style="white-space:nowrap">
+** file:///C:/Documents%20and%20Settings/fred/Desktop/data.db
+** <td> Windows only: Open the file "data.db" on fred's desktop on drive
+** C:. Note that the %20 escaping in this example is not strictly
+** necessary - space characters can be used literally
+** in URI filenames.
+** <tr><td> file:data.db?mode=ro&cache=private <td>
+** Open file "data.db" in the current directory for read-only access.
+** Regardless of whether or not shared-cache mode is enabled by
+** default, use a private cache.
+** <tr><td> file:/home/fred/data.db?vfs=unix-nolock <td>
+** Open file "/home/fred/data.db". Use the special VFS "unix-nolock".
+** <tr><td> file:data.db?mode=readonly <td>
+** An error. "readonly" is not a valid option for the "mode" parameter.
+** </table>
+**
+** ^URI hexadecimal escape sequences (%HH) are supported within the path and
+** query components of a URI. A hexadecimal escape sequence consists of a
+** percent sign - "%" - followed by exactly two hexadecimal digits
+** specifying an octet value. ^Before the path or query components of a
+** URI filename are interpreted, they are encoded using UTF-8 and all
+** hexadecimal escape sequences replaced by a single byte containing the
+** corresponding octet. If this process generates an invalid UTF-8 encoding,
+** the results are undefined.
**
** <b>Note to Windows users:</b> The encoding used for the filename argument
** of sqlite3_open() and sqlite3_open_v2() must be UTF-8, not whatever
@@ -2363,6 +2626,45 @@
);
/*
+** CAPI3REF: Obtain Values For URI Parameters
+**
+** These are utility routines, useful to VFS implementations, that check
+** to see if a database file was a URI that contained a specific query
+** parameter, and if so obtains the value of that query parameter.
+**
+** If F is the database filename pointer passed into the xOpen() method of
+** a VFS implementation when the flags parameter to xOpen() has one or
+** more of the [SQLITE_OPEN_URI] or [SQLITE_OPEN_MAIN_DB] bits set and
+** P is the name of the query parameter, then
+** sqlite3_uri_parameter(F,P) returns the value of the P
+** parameter if it exists or a NULL pointer if P does not appear as a
+** query parameter on F. If P is a query parameter of F
+** has no explicit value, then sqlite3_uri_parameter(F,P) returns
+** a pointer to an empty string.
+**
+** The sqlite3_uri_boolean(F,P,B) routine assumes that P is a boolean
+** parameter and returns true (1) or false (0) according to the value
+** of P. The value of P is true if it is "yes" or "true" or "on" or
+** a non-zero number and is false otherwise. If P is not a query parameter
+** on F then sqlite3_uri_boolean(F,P,B) returns (B!=0).
+**
+** The sqlite3_uri_int64(F,P,D) routine converts the value of P into a
+** 64-bit signed integer and returns that integer, or D if P does not
+** exist. If the value of P is something other than an integer, then
+** zero is returned.
+**
+** If F is a NULL pointer, then sqlite3_uri_parameter(F,P) returns NULL and
+** sqlite3_uri_boolean(F,P,B) returns B. If F is not a NULL pointer and
+** is not a database file pathname pointer that SQLite passed into the xOpen
+** VFS method, then the behavior of this routine is undefined and probably
+** undesirable.
+*/
+SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam);
+SQLITE_API int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault);
+SQLITE_API sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int64);
+
+
+/*
** CAPI3REF: Error Codes And Messages
**
** ^The sqlite3_errcode() interface returns the numeric [result code] or
@@ -2477,43 +2779,45 @@
** Additional information is available at [limits | Limits in SQLite].
**
** <dl>
-** ^(<dt>SQLITE_LIMIT_LENGTH</dt>
+** [[SQLITE_LIMIT_LENGTH]] ^(<dt>SQLITE_LIMIT_LENGTH</dt>
** <dd>The maximum size of any string or BLOB or table row, in bytes.<dd>)^
**
-** ^(<dt>SQLITE_LIMIT_SQL_LENGTH</dt>
+** [[SQLITE_LIMIT_SQL_LENGTH]] ^(<dt>SQLITE_LIMIT_SQL_LENGTH</dt>
** <dd>The maximum length of an SQL statement, in bytes.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_COLUMN</dt>
+** [[SQLITE_LIMIT_COLUMN]] ^(<dt>SQLITE_LIMIT_COLUMN</dt>
** <dd>The maximum number of columns in a table definition or in the
** result set of a [SELECT] or the maximum number of columns in an index
** or in an ORDER BY or GROUP BY clause.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_EXPR_DEPTH</dt>
+** [[SQLITE_LIMIT_EXPR_DEPTH]] ^(<dt>SQLITE_LIMIT_EXPR_DEPTH</dt>
** <dd>The maximum depth of the parse tree on any expression.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_COMPOUND_SELECT</dt>
+** [[SQLITE_LIMIT_COMPOUND_SELECT]] ^(<dt>SQLITE_LIMIT_COMPOUND_SELECT</dt>
** <dd>The maximum number of terms in a compound SELECT statement.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_VDBE_OP</dt>
+** [[SQLITE_LIMIT_VDBE_OP]] ^(<dt>SQLITE_LIMIT_VDBE_OP</dt>
** <dd>The maximum number of instructions in a virtual machine program
** used to implement an SQL statement. This limit is not currently
** enforced, though that might be added in some future release of
** SQLite.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_FUNCTION_ARG</dt>
+** [[SQLITE_LIMIT_FUNCTION_ARG]] ^(<dt>SQLITE_LIMIT_FUNCTION_ARG</dt>
** <dd>The maximum number of arguments on a function.</dd>)^
**
-** ^(<dt>SQLITE_LIMIT_ATTACHED</dt>
+** [[SQLITE_LIMIT_ATTACHED]] ^(<dt>SQLITE_LIMIT_ATTACHED</dt>
** <dd>The maximum number of [ATTACH | attached databases].)^</dd>
**
+** [[SQLITE_LIMIT_LIKE_PATTERN_LENGTH]]
** ^(<dt>SQLITE_LIMIT_LIKE_PATTERN_LENGTH</dt>
** <dd>The maximum length of the pattern argument to the [LIKE] or
** [GLOB] operators.</dd>)^
**
+** [[SQLITE_LIMIT_VARIABLE_NUMBER]]
** ^(<dt>SQLITE_LIMIT_VARIABLE_NUMBER</dt>
** <dd>The maximum index number of any [parameter] in an SQL statement.)^
**
-** ^(<dt>SQLITE_LIMIT_TRIGGER_DEPTH</dt>
+** [[SQLITE_LIMIT_TRIGGER_DEPTH]] ^(<dt>SQLITE_LIMIT_TRIGGER_DEPTH</dt>
** <dd>The maximum depth of recursion for triggers.</dd>)^
** </dl>
*/
@@ -2553,7 +2857,8 @@
** that the supplied string is nul-terminated, then there is a small
** performance advantage to be gained by passing an nByte parameter that
** is equal to the number of bytes in the input string <i>including</i>
-** the nul-terminator bytes.
+** the nul-terminator bytes as this saves SQLite from having to
+** make a copy of the input string.
**
** ^If pzTail is not NULL then *pzTail is made to point to the first byte
** past the end of the first SQL statement in zSql. These routines only
@@ -2604,7 +2909,7 @@
** ^The specific value of WHERE-clause [parameter] might influence the
** choice of query plan if the parameter is the left-hand side of a [LIKE]
** or [GLOB] operator or if the parameter is compared to an indexed column
-** and the [SQLITE_ENABLE_STAT2] compile-time option is enabled.
+** and the [SQLITE_ENABLE_STAT3] compile-time option is enabled.
** the
** </li>
** </ol>
@@ -2651,17 +2956,53 @@
** CAPI3REF: Determine If An SQL Statement Writes The Database
**
** ^The sqlite3_stmt_readonly(X) interface returns true (non-zero) if
-** the [prepared statement] X is [SELECT] statement and false (zero) if
-** X is an [INSERT], [UPDATE], [DELETE], CREATE, DROP, [ANALYZE],
-** [ALTER], or [REINDEX] statement.
-** If X is a NULL pointer or any other kind of statement, including but
-** not limited to [ATTACH], [DETACH], [COMMIT], [ROLLBACK], [RELEASE],
-** [SAVEPOINT], [PRAGMA], or [VACUUM] the result of sqlite3_stmt_readonly(X) is
-** undefined.
+** and only if the [prepared statement] X makes no direct changes to
+** the content of the database file.
+**
+** Note that [application-defined SQL functions] or
+** [virtual tables] might change the database indirectly as a side effect.
+** ^(For example, if an application defines a function "eval()" that
+** calls [sqlite3_exec()], then the following SQL statement would
+** change the database file through side-effects:
+**
+** <blockquote><pre>
+** SELECT eval('DELETE FROM t1') FROM t2;
+** </pre></blockquote>
+**
+** But because the [SELECT] statement does not change the database file
+** directly, sqlite3_stmt_readonly() would still return true.)^
+**
+** ^Transaction control statements such as [BEGIN], [COMMIT], [ROLLBACK],
+** [SAVEPOINT], and [RELEASE] cause sqlite3_stmt_readonly() to return true,
+** since the statements themselves do not actually modify the database but
+** rather they control the timing of when other statements modify the
+** database. ^The [ATTACH] and [DETACH] statements also cause
+** sqlite3_stmt_readonly() to return true since, while those statements
+** change the configuration of a database connection, they do not make
+** changes to the content of the database files on disk.
*/
SQLITE_API int sqlite3_stmt_readonly(sqlite3_stmt *pStmt);
/*
+** CAPI3REF: Determine If A Prepared Statement Has Been Reset
+**
+** ^The sqlite3_stmt_busy(S) interface returns true (non-zero) if the
+** [prepared statement] S has been stepped at least once using
+** [sqlite3_step(S)] but has not run to completion and/or has not
+** been reset using [sqlite3_reset(S)]. ^The sqlite3_stmt_busy(S)
+** interface returns false if S is a NULL pointer. If S is not a
+** NULL pointer and is not a pointer to a valid [prepared statement]
+** object, then the behavior is undefined and probably undesirable.
+**
+** This interface can be used in combination [sqlite3_next_stmt()]
+** to locate all prepared statements associated with a database
+** connection that are in need of being reset. This can be used,
+** for example, in diagnostic routines to search for prepared
+** statements that are holding a transaction open.
+*/
+SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*);
+
+/*
** CAPI3REF: Dynamically Typed Value Object
** KEYWORDS: {protected sqlite3_value} {unprotected sqlite3_value}
**
@@ -2677,7 +3018,7 @@
** whether or not it requires a protected sqlite3_value.
**
** The terms "protected" and "unprotected" refer to whether or not
-** a mutex is held. A internal mutex is held for a protected
+** a mutex is held. An internal mutex is held for a protected
** sqlite3_value object but no mutex is held for an unprotected
** sqlite3_value object. If SQLite is compiled to be single-threaded
** (with [SQLITE_THREADSAFE=0] and with [sqlite3_threadsafe()] returning 0)
@@ -2757,6 +3098,13 @@
** number of <u>bytes</u> in the value, not the number of characters.)^
** ^If the fourth parameter is negative, the length of the string is
** the number of bytes up to the first zero terminator.
+** If a non-negative fourth parameter is provided to sqlite3_bind_text()
+** or sqlite3_bind_text16() then that parameter must be the byte offset
+** where the NUL terminator would occur assuming the string were NUL
+** terminated. If any NUL characters occur at byte offsets less than
+** the value of the fourth parameter then the resulting string value will
+** contain embedded NULs. The result of expressions involving strings
+** with embedded NULs is undefined.
**
** ^The fifth argument to sqlite3_bind_blob(), sqlite3_bind_text(), and
** sqlite3_bind_text16() is a destructor used to dispose of the BLOB or
@@ -2901,7 +3249,9 @@
** column number. ^The leftmost column is number 0.
**
** ^The returned string pointer is valid until either the [prepared statement]
-** is destroyed by [sqlite3_finalize()] or until the next call to
+** is destroyed by [sqlite3_finalize()] or until the statement is automatically
+** reprepared by the first call to [sqlite3_step()] for a particular run
+** or until the next call to
** sqlite3_column_name() or sqlite3_column_name16() on the same column.
**
** ^If sqlite3_malloc() fails during the processing of either routine
@@ -2927,7 +3277,9 @@
** the database name, the _table_ routines return the table name, and
** the origin_ routines return the column name.
** ^The returned string is valid until the [prepared statement] is destroyed
-** using [sqlite3_finalize()] or until the same information is requested
+** using [sqlite3_finalize()] or until the statement is automatically
+** reprepared by the first call to [sqlite3_step()] for a particular run
+** or until the same information is requested
** again in a different encoding.
**
** ^The names returned are the original un-aliased names of the
@@ -3021,7 +3373,7 @@
** ^[SQLITE_BUSY] means that the database engine was unable to acquire the
** database locks it needs to do its job. ^If the statement is a [COMMIT]
** or occurs outside of an explicit transaction, then you can retry the
-** statement. If the statement is not a [COMMIT] and occurs within a
+** statement. If the statement is not a [COMMIT] and occurs within an
** explicit transaction then you should rollback the transaction before
** continuing.
**
@@ -3051,13 +3403,17 @@
** be the case that the same database connection is being used by two or
** more threads at the same moment in time.
**
-** For all versions of SQLite up to and including 3.6.23.1, it was required
-** after sqlite3_step() returned anything other than [SQLITE_ROW] that
-** [sqlite3_reset()] be called before any subsequent invocation of
-** sqlite3_step(). Failure to invoke [sqlite3_reset()] in this way would
-** result in an [SQLITE_MISUSE] return from sqlite3_step(). But after
-** version 3.6.23.1, sqlite3_step() began calling [sqlite3_reset()]
-** automatically in this circumstance rather than returning [SQLITE_MISUSE].
+** For all versions of SQLite up to and including 3.6.23.1, a call to
+** [sqlite3_reset()] was required after sqlite3_step() returned anything
+** other than [SQLITE_ROW] before any subsequent invocation of
+** sqlite3_step(). Failure to reset the prepared statement using
+** [sqlite3_reset()] would result in an [SQLITE_MISUSE] return from
+** sqlite3_step(). But after version 3.6.23.1, sqlite3_step() began
+** calling [sqlite3_reset()] automatically in this circumstance rather
+** than returning [SQLITE_MISUSE]. This is not considered a compatibility
+** break because any application that ever receives an SQLITE_MISUSE error
+** is broken by definition. The [SQLITE_OMIT_AUTORESET] compile-time option
+** can be used to restore the legacy behavior.
**
** <b>Goofy Interface Alert:</b> In the legacy interface, the sqlite3_step()
** API always returns a generic error code, [SQLITE_ERROR], following any
@@ -3082,6 +3438,12 @@
** (via calls to the [sqlite3_column_int | sqlite3_column_*()] of
** interfaces) then sqlite3_data_count(P) returns 0.
** ^The sqlite3_data_count(P) routine also returns 0 if P is a NULL pointer.
+** ^The sqlite3_data_count(P) routine returns 0 if the previous call to
+** [sqlite3_step](P) returned [SQLITE_DONE]. ^The sqlite3_data_count(P)
+** will return non-zero if previous call to [sqlite3_step](P) returned
+** [SQLITE_ROW], except in the case of the [PRAGMA incremental_vacuum]
+** where it always returns zero since each step of that multi-step
+** pragma returns 0 columns of data.
**
** See also: [sqlite3_column_count()]
*/
@@ -3181,7 +3543,7 @@
** bytes in the string, not the number of characters.
**
** ^Strings returned by sqlite3_column_text() and sqlite3_column_text16(),
-** even empty strings, are always zero terminated. ^The return
+** even empty strings, are always zero-terminated. ^The return
** value from sqlite3_column_blob() for a zero-length BLOB is a NULL pointer.
**
** ^The object returned by [sqlite3_column_value()] is an
@@ -3296,7 +3658,7 @@
** CAPI3REF: Destroy A Prepared Statement Object
**
** ^The sqlite3_finalize() function is called to delete a [prepared statement].
-** ^If the most recent evaluation of the statement encountered no errors or
+** ^If the most recent evaluation of the statement encountered no errors
** or if the statement is never been evaluated, then sqlite3_finalize() returns
** SQLITE_OK. ^If the most recent evaluation of statement S failed, then
** sqlite3_finalize(S) returns the appropriate [error code] or
@@ -3355,7 +3717,7 @@
** are used to add SQL functions or aggregates or to redefine the behavior
** of existing SQL functions or aggregates. The only differences between
** these routines are the text encoding expected for
-** the the second parameter (the name of the function being created)
+** the second parameter (the name of the function being created)
** and the presence or absence of a destructor callback for
** the application data pointer.
**
@@ -3394,16 +3756,16 @@
** ^(The fifth parameter is an arbitrary pointer. The implementation of the
** function can gain access to this pointer using [sqlite3_user_data()].)^
**
-** ^The seventh, eighth and ninth parameters, xFunc, xStep and xFinal, are
+** ^The sixth, seventh and eighth parameters, xFunc, xStep and xFinal, are
** pointers to C-language functions that implement the SQL function or
** aggregate. ^A scalar SQL function requires an implementation of the xFunc
** callback only; NULL pointers must be passed as the xStep and xFinal
** parameters. ^An aggregate SQL function requires an implementation of xStep
** and xFinal and NULL pointer must be passed for xFunc. ^To delete an existing
-** SQL function or aggregate, pass NULL poiners for all three function
+** SQL function or aggregate, pass NULL pointers for all three function
** callbacks.
**
-** ^(If the tenth parameter to sqlite3_create_function_v2() is not NULL,
+** ^(If the ninth parameter to sqlite3_create_function_v2() is not NULL,
** then it is destructor for the application data pointer.
** The destructor is invoked when the function is deleted, either by being
** overloaded or when the database connection closes.)^
@@ -3507,7 +3869,7 @@
** The xFunc (for scalar functions) or xStep (for aggregates) parameters
** to [sqlite3_create_function()] and [sqlite3_create_function16()]
** define callbacks that implement the SQL functions and aggregates.
-** The 4th parameter to these callbacks is an array of pointers to
+** The 3rd parameter to these callbacks is an array of pointers to
** [protected sqlite3_value] objects. There is one [sqlite3_value] object for
** each parameter to the SQL function. These routines are used to
** extract values from the [sqlite3_value] objects.
@@ -3761,7 +4123,12 @@
** ^If the 3rd parameter to the sqlite3_result_text* interfaces
** is non-negative, then as many bytes (not characters) of the text
** pointed to by the 2nd parameter are taken as the application-defined
-** function result.
+** function result. If the 3rd parameter is non-negative, then it
+** must be the byte offset into the string where the NUL terminator would
+** appear if the string where NUL terminated. If any NUL characters occur
+** in the string at a byte offset that is less than the value of the 3rd
+** parameter, then the resulting string will contain embedded NULs and the
+** result of expressions operating on strings with embedded NULs is undefined.
** ^If the 4th parameter to the sqlite3_result_text* interfaces
** or sqlite3_result_blob is a non-NULL pointer, then SQLite calls that
** function as the destructor on the text or BLOB result when it has
@@ -3834,7 +4201,7 @@
** ^The [SQLITE_UTF16_ALIGNED] value for eTextRep forces strings to begin
** on an even byte address.
**
-** ^The fourth argument, pArg, is a application data pointer that is passed
+** ^The fourth argument, pArg, is an application data pointer that is passed
** through as the first argument to the collating function callback.
**
** ^The fifth argument, xCallback, is a pointer to the collating function.
@@ -3850,7 +4217,7 @@
** by the eTextRep argument. The collating function must return an
** integer that is negative, zero, or positive
** if the first string is less than, equal to, or greater than the second,
-** respectively. A collating function must alway return the same answer
+** respectively. A collating function must always return the same answer
** given the same inputs. If two or more collating functions are registered
** to the same collation name (using different eTextRep values) then all
** must give an equivalent answer when invoked with equivalent strings.
@@ -4077,6 +4444,22 @@
SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt*);
/*
+** CAPI3REF: Return The Filename For A Database Connection
+**
+** ^The sqlite3_db_filename(D,N) interface returns a pointer to a filename
+** associated with database N of connection D. ^The main database file
+** has the name "main". If there is no attached database N on the database
+** connection D, or if database N is a temporary or in-memory database, then
+** a NULL pointer is returned.
+**
+** ^The filename returned by this function is the output of the
+** xFullPathname method of the [VFS]. ^In other words, the filename
+** will be an absolute pathname, even if the filename used
+** to open the database originally was a URI or relative pathname.
+*/
+SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName);
+
+/*
** CAPI3REF: Find the next prepared statement
**
** ^This interface returns a pointer to the next [prepared statement] after
@@ -4111,13 +4494,15 @@
** on the same [database connection] D, or NULL for
** the first call for each function on D.
**
+** The commit and rollback hook callbacks are not reentrant.
** The callback implementation must not do anything that will modify
** the database connection that invoked the callback. Any actions
** to modify the database connection must be deferred until after the
** completion of the [sqlite3_step()] call that triggered the commit
** or rollback hook in the first place.
-** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their
-** database connections for the meaning of "modify" in this paragraph.
+** Note that running any other SQL statements, including SELECT statements,
+** or merely calling [sqlite3_prepare_v2()] and [sqlite3_step()] will modify
+** the database connections for the meaning of "modify" in this paragraph.
**
** ^Registering a NULL function disables the callback.
**
@@ -4230,10 +4615,25 @@
** which might be more or less than the amount requested.
** ^The sqlite3_release_memory() routine is a no-op returning zero
** if SQLite is not compiled with [SQLITE_ENABLE_MEMORY_MANAGEMENT].
+**
+** See also: [sqlite3_db_release_memory()]
*/
SQLITE_API int sqlite3_release_memory(int);
/*
+** CAPI3REF: Free Memory Used By A Database Connection
+**
+** ^The sqlite3_db_release_memory(D) interface attempts to free as much heap
+** memory as possible from database connection D. Unlike the
+** [sqlite3_release_memory()] interface, this interface is effect even
+** when then [SQLITE_ENABLE_MEMORY_MANAGEMENT] compile-time option is
+** omitted.
+**
+** See also: [sqlite3_release_memory()]
+*/
+SQLITE_API int sqlite3_db_release_memory(sqlite3*);
+
+/*
** CAPI3REF: Impose A Limit On Heap Size
**
** ^The sqlite3_soft_heap_limit64() interface sets and/or queries the
@@ -4247,7 +4647,8 @@
** is advisory only.
**
** ^The return value from sqlite3_soft_heap_limit64() is the size of
-** the soft heap limit prior to the call. ^If the argument N is negative
+** the soft heap limit prior to the call, or negative in the case of an
+** error. ^If the argument N is negative
** then no change is made to the soft heap limit. Hence, the current
** size of the soft heap limit can be determined by invoking
** sqlite3_soft_heap_limit64() with a negative argument.
@@ -4262,8 +4663,8 @@
** <li> Memory accounting is disabled using a combination of the
** [sqlite3_config]([SQLITE_CONFIG_MEMSTATUS],...) start-time option and
** the [SQLITE_DEFAULT_MEMSTATUS] compile-time option.
-** <li> An alternative page cache implementation is specifed using
-** [sqlite3_config]([SQLITE_CONFIG_PCACHE],...).
+** <li> An alternative page cache implementation is specified using
+** [sqlite3_config]([SQLITE_CONFIG_PCACHE2],...).
** <li> The page cache allocates from its own memory pool supplied
** by [sqlite3_config]([SQLITE_CONFIG_PAGECACHE],...) rather than
** from the heap.
@@ -4483,7 +4884,7 @@
** CAPI3REF: Virtual Table Object
** KEYWORDS: sqlite3_module {virtual table module}
**
-** This structure, sometimes called a a "virtual table module",
+** This structure, sometimes called a "virtual table module",
** defines the implementation of a [virtual tables].
** This structure consists mostly of methods for the module.
**
@@ -4523,6 +4924,11 @@
void (**pxFunc)(sqlite3_context*,int,sqlite3_value**),
void **ppArg);
int (*xRename)(sqlite3_vtab *pVtab, const char *zNew);
+ /* The methods above are in version 1 of the sqlite_module object. Those
+ ** below are for version 2 and greater. */
+ int (*xSavepoint)(sqlite3_vtab *pVTab, int);
+ int (*xRelease)(sqlite3_vtab *pVTab, int);
+ int (*xRollbackTo)(sqlite3_vtab *pVTab, int);
};
/*
@@ -4795,7 +5201,7 @@
** This is true if any column of the row is changed, even a column
** other than the one the BLOB handle is open on.)^
** ^Calls to [sqlite3_blob_read()] and [sqlite3_blob_write()] for
-** a expired BLOB handle fail with an return code of [SQLITE_ABORT].
+** an expired BLOB handle fail with a return code of [SQLITE_ABORT].
** ^(Changes written into a BLOB prior to the BLOB expiring are not
** rolled back by the expiration of the BLOB. Such changes will eventually
** commit if the transaction continues to completion.)^
@@ -5000,7 +5406,7 @@
**
** <ul>
** <li> SQLITE_MUTEX_OS2
-** <li> SQLITE_MUTEX_PTHREAD
+** <li> SQLITE_MUTEX_PTHREADS
** <li> SQLITE_MUTEX_W32
** <li> SQLITE_MUTEX_NOOP
** </ul>)^
@@ -5008,7 +5414,7 @@
** ^The SQLITE_MUTEX_NOOP implementation is a set of routines
** that does no real locking and is appropriate for use in
** a single-threaded application. ^The SQLITE_MUTEX_OS2,
-** SQLITE_MUTEX_PTHREAD, and SQLITE_MUTEX_W32 implementations
+** SQLITE_MUTEX_PTHREADS, and SQLITE_MUTEX_W32 implementations
** are appropriate for use on OS/2, Unix, and Windows.
**
** ^(If SQLite is compiled with the SQLITE_MUTEX_APPDEF preprocessor
@@ -5198,14 +5604,14 @@
** ^These routines should return true if the mutex in their argument
** is held or not held, respectively, by the calling thread.
**
-** ^The implementation is not required to provided versions of these
+** ^The implementation is not required to provide versions of these
** routines that actually work. If the implementation does not provide working
** versions of these routines, it should at least provide stubs that always
** return true so that one does not get spurious assertion failures.
**
** ^If the argument to sqlite3_mutex_held() is a NULL pointer then
** the routine should return 1. This seems counter-intuitive since
-** clearly the mutex cannot be held if it does not exist. But the
+** clearly the mutex cannot be held if it does not exist. But
** the reason the mutex does not exist is because the build is not
** using mutexes. And we do not want the assert() containing the
** call to sqlite3_mutex_held() to fail, so a non-zero return is
@@ -5235,7 +5641,8 @@
#define SQLITE_MUTEX_STATIC_OPEN 4 /* sqlite3BtreeOpen() */
#define SQLITE_MUTEX_STATIC_PRNG 5 /* sqlite3_random() */
#define SQLITE_MUTEX_STATIC_LRU 6 /* lru page list */
-#define SQLITE_MUTEX_STATIC_LRU2 7 /* lru page list */
+#define SQLITE_MUTEX_STATIC_LRU2 7 /* NOT USED */
+#define SQLITE_MUTEX_STATIC_PMEM 7 /* sqlite3PageMalloc() */
/*
** CAPI3REF: Retrieve the mutex for a database connection
@@ -5325,9 +5732,10 @@
#define SQLITE_TESTCTRL_RESERVE 14
#define SQLITE_TESTCTRL_OPTIMIZATIONS 15
#define SQLITE_TESTCTRL_ISKEYWORD 16
-#define SQLITE_TESTCTRL_PGHDRSZ 17
-#define SQLITE_TESTCTRL_SCRATCHMALLOC 18
-#define SQLITE_TESTCTRL_LAST 18
+#define SQLITE_TESTCTRL_SCRATCHMALLOC 17
+#define SQLITE_TESTCTRL_LOCALTIME_FAULT 18
+#define SQLITE_TESTCTRL_EXPLAIN_STMT 19
+#define SQLITE_TESTCTRL_LAST 19
/*
** CAPI3REF: SQLite Runtime Status
@@ -5336,7 +5744,7 @@
** about the performance of SQLite, and optionally to reset various
** highwater marks. ^The first argument is an integer code for
** the specific parameter to measure. ^(Recognized integer codes
-** are of the form [SQLITE_STATUS_MEMORY_USED | SQLITE_STATUS_...].)^
+** are of the form [status parameters | SQLITE_STATUS_...].)^
** ^The current value of the parameter is returned into *pCurrent.
** ^The highest recorded value is returned in *pHighwater. ^If the
** resetFlag is true, then the highest record value is reset after
@@ -5363,12 +5771,13 @@
/*
** CAPI3REF: Status Parameters
+** KEYWORDS: {status parameters}
**
** These integer constants designate various run-time status parameters
** that can be returned by [sqlite3_status()].
**
** <dl>
-** ^(<dt>SQLITE_STATUS_MEMORY_USED</dt>
+** [[SQLITE_STATUS_MEMORY_USED]] ^(<dt>SQLITE_STATUS_MEMORY_USED</dt>
** <dd>This parameter is the current amount of memory checked out
** using [sqlite3_malloc()], either directly or indirectly. The
** figure includes calls made to [sqlite3_malloc()] by the application
@@ -5378,22 +5787,24 @@
** this parameter. The amount returned is the sum of the allocation
** sizes as reported by the xSize method in [sqlite3_mem_methods].</dd>)^
**
-** ^(<dt>SQLITE_STATUS_MALLOC_SIZE</dt>
+** [[SQLITE_STATUS_MALLOC_SIZE]] ^(<dt>SQLITE_STATUS_MALLOC_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [sqlite3_malloc()] or [sqlite3_realloc()] (or their
** internal equivalents). Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_MALLOC_COUNT</dt>
-** <dd>This parameter records the number of separate memory allocations.</dd>)^
+** [[SQLITE_STATUS_MALLOC_COUNT]] ^(<dt>SQLITE_STATUS_MALLOC_COUNT</dt>
+** <dd>This parameter records the number of separate memory allocations
+** currently checked out.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_PAGECACHE_USED</dt>
+** [[SQLITE_STATUS_PAGECACHE_USED]] ^(<dt>SQLITE_STATUS_PAGECACHE_USED</dt>
** <dd>This parameter returns the number of pages used out of the
** [pagecache memory allocator] that was configured using
** [SQLITE_CONFIG_PAGECACHE]. The
** value returned is in pages, not in bytes.</dd>)^
**
+** [[SQLITE_STATUS_PAGECACHE_OVERFLOW]]
** ^(<dt>SQLITE_STATUS_PAGECACHE_OVERFLOW</dt>
** <dd>This parameter returns the number of bytes of page cache
** allocation which could not be satisfied by the [SQLITE_CONFIG_PAGECACHE]
@@ -5403,13 +5814,13 @@
** [SQLITE_CONFIG_PAGECACHE]) and allocations that overflowed because
** no space was left in the page cache.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_PAGECACHE_SIZE</dt>
+** [[SQLITE_STATUS_PAGECACHE_SIZE]] ^(<dt>SQLITE_STATUS_PAGECACHE_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [pagecache memory allocator]. Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_SCRATCH_USED</dt>
+** [[SQLITE_STATUS_SCRATCH_USED]] ^(<dt>SQLITE_STATUS_SCRATCH_USED</dt>
** <dd>This parameter returns the number of allocations used out of the
** [scratch memory allocator] configured using
** [SQLITE_CONFIG_SCRATCH]. The value returned is in allocations, not
@@ -5417,7 +5828,7 @@
** outstanding at time, this parameter also reports the number of threads
** using scratch memory at the same time.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_SCRATCH_OVERFLOW</dt>
+** [[SQLITE_STATUS_SCRATCH_OVERFLOW]] ^(<dt>SQLITE_STATUS_SCRATCH_OVERFLOW</dt>
** <dd>This parameter returns the number of bytes of scratch memory
** allocation which could not be satisfied by the [SQLITE_CONFIG_SCRATCH]
** buffer and where forced to overflow to [sqlite3_malloc()]. The values
@@ -5427,13 +5838,13 @@
** slots were available.
** </dd>)^
**
-** ^(<dt>SQLITE_STATUS_SCRATCH_SIZE</dt>
+** [[SQLITE_STATUS_SCRATCH_SIZE]] ^(<dt>SQLITE_STATUS_SCRATCH_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [scratch memory allocator]. Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
-** ^(<dt>SQLITE_STATUS_PARSER_STACK</dt>
+** [[SQLITE_STATUS_PARSER_STACK]] ^(<dt>SQLITE_STATUS_PARSER_STACK</dt>
** <dd>This parameter records the deepest parser stack. It is only
** meaningful if SQLite is compiled with [YYTRACKMAXSTACKDEPTH].</dd>)^
** </dl>
@@ -5458,9 +5869,9 @@
** about a single [database connection]. ^The first argument is the
** database connection object to be interrogated. ^The second argument
** is an integer constant, taken from the set of
-** [SQLITE_DBSTATUS_LOOKASIDE_USED | SQLITE_DBSTATUS_*] macros, that
+** [SQLITE_DBSTATUS options], that
** determines the parameter to interrogate. The set of
-** [SQLITE_DBSTATUS_LOOKASIDE_USED | SQLITE_DBSTATUS_*] macros is likely
+** [SQLITE_DBSTATUS options] is likely
** to grow in future releases of SQLite.
**
** ^The current value of the requested parameter is written into *pCur
@@ -5477,6 +5888,7 @@
/*
** CAPI3REF: Status Parameters for database connections
+** KEYWORDS: {SQLITE_DBSTATUS options}
**
** These constants are the available integer "verbs" that can be passed as
** the second argument to the [sqlite3_db_status()] interface.
@@ -5488,16 +5900,37 @@
** if a discontinued or unsupported verb is invoked.
**
** <dl>
-** ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_USED</dt>
+** [[SQLITE_DBSTATUS_LOOKASIDE_USED]] ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_USED</dt>
** <dd>This parameter returns the number of lookaside memory slots currently
** checked out.</dd>)^
**
-** ^(<dt>SQLITE_DBSTATUS_CACHE_USED</dt>
+** [[SQLITE_DBSTATUS_LOOKASIDE_HIT]] ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_HIT</dt>
+** <dd>This parameter returns the number malloc attempts that were
+** satisfied using lookaside memory. Only the high-water value is meaningful;
+** the current value is always zero.)^
+**
+** [[SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE]]
+** ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE</dt>
+** <dd>This parameter returns the number malloc attempts that might have
+** been satisfied using lookaside memory but failed due to the amount of
+** memory requested being larger than the lookaside slot size.
+** Only the high-water value is meaningful;
+** the current value is always zero.)^
+**
+** [[SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL]]
+** ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL</dt>
+** <dd>This parameter returns the number malloc attempts that might have
+** been satisfied using lookaside memory but failed due to all lookaside
+** memory already being in use.
+** Only the high-water value is meaningful;
+** the current value is always zero.)^
+**
+** [[SQLITE_DBSTATUS_CACHE_USED]] ^(<dt>SQLITE_DBSTATUS_CACHE_USED</dt>
** <dd>This parameter returns the approximate number of of bytes of heap
** memory used by all pager caches associated with the database connection.)^
** ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_USED is always 0.
**
-** ^(<dt>SQLITE_DBSTATUS_SCHEMA_USED</dt>
+** [[SQLITE_DBSTATUS_SCHEMA_USED]] ^(<dt>SQLITE_DBSTATUS_SCHEMA_USED</dt>
** <dd>This parameter returns the approximate number of of bytes of heap
** memory used to store the schema for all databases associated
** with the connection - main, temp, and any [ATTACH]-ed databases.)^
@@ -5506,26 +5939,43 @@
** [shared cache mode] being enabled.
** ^The highwater mark associated with SQLITE_DBSTATUS_SCHEMA_USED is always 0.
**
-** ^(<dt>SQLITE_DBSTATUS_STMT_USED</dt>
+** [[SQLITE_DBSTATUS_STMT_USED]] ^(<dt>SQLITE_DBSTATUS_STMT_USED</dt>
** <dd>This parameter returns the approximate number of of bytes of heap
** and lookaside memory used by all prepared statements associated with
** the database connection.)^
** ^The highwater mark associated with SQLITE_DBSTATUS_STMT_USED is always 0.
** </dd>
+**
+** [[SQLITE_DBSTATUS_CACHE_HIT]] ^(<dt>SQLITE_DBSTATUS_CACHE_HIT</dt>
+** <dd>This parameter returns the number of pager cache hits that have
+** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_HIT
+** is always 0.
+** </dd>
+**
+** [[SQLITE_DBSTATUS_CACHE_MISS]] ^(<dt>SQLITE_DBSTATUS_CACHE_MISS</dt>
+** <dd>This parameter returns the number of pager cache misses that have
+** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_MISS
+** is always 0.
+** </dd>
** </dl>
*/
-#define SQLITE_DBSTATUS_LOOKASIDE_USED 0
-#define SQLITE_DBSTATUS_CACHE_USED 1
-#define SQLITE_DBSTATUS_SCHEMA_USED 2
-#define SQLITE_DBSTATUS_STMT_USED 3
-#define SQLITE_DBSTATUS_MAX 3 /* Largest defined DBSTATUS */
+#define SQLITE_DBSTATUS_LOOKASIDE_USED 0
+#define SQLITE_DBSTATUS_CACHE_USED 1
+#define SQLITE_DBSTATUS_SCHEMA_USED 2
+#define SQLITE_DBSTATUS_STMT_USED 3
+#define SQLITE_DBSTATUS_LOOKASIDE_HIT 4
+#define SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE 5
+#define SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL 6
+#define SQLITE_DBSTATUS_CACHE_HIT 7
+#define SQLITE_DBSTATUS_CACHE_MISS 8
+#define SQLITE_DBSTATUS_MAX 8 /* Largest defined DBSTATUS */
/*
** CAPI3REF: Prepared Statement Status
**
** ^(Each prepared statement maintains various
-** [SQLITE_STMTSTATUS_SORT | counters] that measure the number
+** [SQLITE_STMTSTATUS counters] that measure the number
** of times it has performed specific operations.)^ These counters can
** be used to monitor the performance characteristics of the prepared
** statements. For example, if the number of table steps greatly exceeds
@@ -5536,7 +5986,7 @@
** ^(This interface is used to retrieve and reset counter values from
** a [prepared statement]. The first argument is the prepared statement
** object to be interrogated. The second argument
-** is an integer code for a specific [SQLITE_STMTSTATUS_SORT | counter]
+** is an integer code for a specific [SQLITE_STMTSTATUS counter]
** to be interrogated.)^
** ^The current value of the requested counter is returned.
** ^If the resetFlg is true, then the counter is reset to zero after this
@@ -5548,30 +5998,30 @@
/*
** CAPI3REF: Status Parameters for prepared statements
+** KEYWORDS: {SQLITE_STMTSTATUS counter} {SQLITE_STMTSTATUS counters}
**
** These preprocessor macros define integer codes that name counter
** values associated with the [sqlite3_stmt_status()] interface.
** The meanings of the various counters are as follows:
**
** <dl>
-** <dt>SQLITE_STMTSTATUS_FULLSCAN_STEP</dt>
+** [[SQLITE_STMTSTATUS_FULLSCAN_STEP]] <dt>SQLITE_STMTSTATUS_FULLSCAN_STEP</dt>
** <dd>^This is the number of times that SQLite has stepped forward in
** a table as part of a full table scan. Large numbers for this counter
** may indicate opportunities for performance improvement through
** careful use of indices.</dd>
**
-** <dt>SQLITE_STMTSTATUS_SORT</dt>
+** [[SQLITE_STMTSTATUS_SORT]] <dt>SQLITE_STMTSTATUS_SORT</dt>
** <dd>^This is the number of sort operations that have occurred.
** A non-zero value in this counter may indicate an opportunity to
** improvement performance through careful use of indices.</dd>
**
-** <dt>SQLITE_STMTSTATUS_AUTOINDEX</dt>
+** [[SQLITE_STMTSTATUS_AUTOINDEX]] <dt>SQLITE_STMTSTATUS_AUTOINDEX</dt>
** <dd>^This is the number of rows inserted into transient indices that
** were created automatically in order to help joins run faster.
** A non-zero value in this counter may indicate an opportunity to
** improvement performance by adding permanent indices that do not
** need to be reinitialized each time the statement is run.</dd>
-**
** </dl>
*/
#define SQLITE_STMTSTATUS_FULLSCAN_STEP 1
@@ -5587,17 +6037,33 @@
** sqlite3_pcache object except by holding and passing pointers
** to the object.
**
-** See [sqlite3_pcache_methods] for additional information.
+** See [sqlite3_pcache_methods2] for additional information.
*/
typedef struct sqlite3_pcache sqlite3_pcache;
/*
+** CAPI3REF: Custom Page Cache Object
+**
+** The sqlite3_pcache_page object represents a single page in the
+** page cache. The page cache will allocate instances of this
+** object. Various methods of the page cache use pointers to instances
+** of this object as parameters or as their return value.
+**
+** See [sqlite3_pcache_methods2] for additional information.
+*/
+typedef struct sqlite3_pcache_page sqlite3_pcache_page;
+struct sqlite3_pcache_page {
+ void *pBuf; /* The content of the page */
+ void *pExtra; /* Extra information associated with the page */
+};
+
+/*
** CAPI3REF: Application Defined Page Cache.
** KEYWORDS: {page cache}
**
-** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE], ...) interface can
+** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE2], ...) interface can
** register an alternative page cache implementation by passing in an
-** instance of the sqlite3_pcache_methods structure.)^
+** instance of the sqlite3_pcache_methods2 structure.)^
** In many applications, most of the heap memory allocated by
** SQLite is used for the page cache.
** By implementing a
@@ -5611,21 +6077,23 @@
** extreme measure that is only needed by the most demanding applications.
** The built-in page cache is recommended for most uses.
**
-** ^(The contents of the sqlite3_pcache_methods structure are copied to an
+** ^(The contents of the sqlite3_pcache_methods2 structure are copied to an
** internal buffer by SQLite within the call to [sqlite3_config]. Hence
** the application may discard the parameter after the call to
** [sqlite3_config()] returns.)^
**
+** [[the xInit() page cache method]]
** ^(The xInit() method is called once for each effective
** call to [sqlite3_initialize()])^
** (usually only once during the lifetime of the process). ^(The xInit()
-** method is passed a copy of the sqlite3_pcache_methods.pArg value.)^
+** method is passed a copy of the sqlite3_pcache_methods2.pArg value.)^
** The intent of the xInit() method is to set up global data structures
** required by the custom page cache implementation.
** ^(If the xInit() method is NULL, then the
** built-in default page cache is used instead of the application defined
** page cache.)^
**
+** [[the xShutdown() page cache method]]
** ^The xShutdown() method is called by [sqlite3_shutdown()].
** It can be used to clean up
** any outstanding resources before process shutdown, if required.
@@ -5640,19 +6108,20 @@
** ^SQLite will never invoke xInit() more than once without an intervening
** call to xShutdown().
**
+** [[the xCreate() page cache methods]]
** ^SQLite invokes the xCreate() method to construct a new cache instance.
** SQLite will typically create one cache instance for each open database file,
** though this is not guaranteed. ^The
** first parameter, szPage, is the size in bytes of the pages that must
-** be allocated by the cache. ^szPage will not be a power of two. ^szPage
-** will the page size of the database file that is to be cached plus an
-** increment (here called "R") of about 100 or 200. SQLite will use the
-** extra R bytes on each page to store metadata about the underlying
-** database page on disk. The value of R depends
+** be allocated by the cache. ^szPage will always a power of two. ^The
+** second parameter szExtra is a number of bytes of extra storage
+** associated with each page cache entry. ^The szExtra parameter will
+** a number less than 250. SQLite will use the
+** extra szExtra bytes on each page to store metadata about the underlying
+** database page on disk. The value passed into szExtra depends
** on the SQLite version, the target platform, and how SQLite was compiled.
-** ^R is constant for a particular build of SQLite. ^The second argument to
-** xCreate(), bPurgeable, is true if the cache being created will
-** be used to cache database pages of a file stored on disk, or
+** ^The third argument to xCreate(), bPurgeable, is true if the cache being
+** created will be used to cache database pages of a file stored on disk, or
** false if it is used for an in-memory database. The cache implementation
** does not have to do anything special based with the value of bPurgeable;
** it is purely advisory. ^On a cache where bPurgeable is false, SQLite will
@@ -5662,6 +6131,7 @@
** ^Hence, a cache created with bPurgeable false will
** never contain any unpinned pages.
**
+** [[the xCachesize() page cache method]]
** ^(The xCachesize() method may be called at any time by SQLite to set the
** suggested maximum cache-size (number of pages stored by) the cache
** instance passed as the first argument. This is the value configured using
@@ -5669,20 +6139,27 @@
** parameter, the implementation is not required to do anything with this
** value; it is advisory only.
**
+** [[the xPagecount() page cache methods]]
** The xPagecount() method must return the number of pages currently
** stored in the cache, both pinned and unpinned.
**
+** [[the xFetch() page cache methods]]
** The xFetch() method locates a page in the cache and returns a pointer to
-** the page, or a NULL pointer.
-** A "page", in this context, means a buffer of szPage bytes aligned at an
-** 8-byte boundary. The page to be fetched is determined by the key. ^The
-** mimimum key value is 1. After it has been retrieved using xFetch, the page
-** is considered to be "pinned".
+** an sqlite3_pcache_page object associated with that page, or a NULL pointer.
+** The pBuf element of the returned sqlite3_pcache_page object will be a
+** pointer to a buffer of szPage bytes used to store the content of a
+** single database page. The pExtra element of sqlite3_pcache_page will be
+** a pointer to the szExtra bytes of extra storage that SQLite has requested
+** for each entry in the page cache.
+**
+** The page to be fetched is determined by the key. ^The minimum key value
+** is 1. After it has been retrieved using xFetch, the page is considered
+** to be "pinned".
**
** If the requested page is already in the page cache, then the page cache
** implementation must return a pointer to the page buffer with its content
** intact. If the requested page is not already in the cache, then the
-** behavior of the cache implementation should use the value of the createFlag
+** cache implementation should use the value of the createFlag
** parameter to help it determined what action to take:
**
** <table border=1 width=85% align=center>
@@ -5700,6 +6177,7 @@
** attempt to unpin one or more cache pages by spilling the content of
** pinned pages to disk and synching the operating system disk cache.
**
+** [[the xUnpin() page cache method]]
** ^xUnpin() is called by SQLite with a pointer to a currently pinned page
** as its second argument. If the third parameter, discard, is non-zero,
** then the page must be evicted from the cache.
@@ -5712,6 +6190,7 @@
** call to xUnpin() unpins the page regardless of the number of prior calls
** to xFetch().
**
+** [[the xRekey() page cache methods]]
** The xRekey() method is used to change the key value associated with the
** page passed as the second argument. If the cache
** previously contains an entry associated with newKey, it must be
@@ -5724,11 +6203,41 @@
** of these pages are pinned, they are implicitly unpinned, meaning that
** they can be safely discarded.
**
+** [[the xDestroy() page cache method]]
** ^The xDestroy() method is used to delete a cache allocated by xCreate().
** All resources associated with the specified cache should be freed. ^After
** calling the xDestroy() method, SQLite considers the [sqlite3_pcache*]
-** handle invalid, and will not use it with any other sqlite3_pcache_methods
+** handle invalid, and will not use it with any other sqlite3_pcache_methods2
** functions.
+**
+** [[the xShrink() page cache method]]
+** ^SQLite invokes the xShrink() method when it wants the page cache to
+** free up as much of heap memory as possible. The page cache implementation
+** is not obligated to free any memory, but well-behaved implementations should
+** do their best.
+*/
+typedef struct sqlite3_pcache_methods2 sqlite3_pcache_methods2;
+struct sqlite3_pcache_methods2 {
+ int iVersion;
+ void *pArg;
+ int (*xInit)(void*);
+ void (*xShutdown)(void*);
+ sqlite3_pcache *(*xCreate)(int szPage, int szExtra, int bPurgeable);
+ void (*xCachesize)(sqlite3_pcache*, int nCachesize);
+ int (*xPagecount)(sqlite3_pcache*);
+ sqlite3_pcache_page *(*xFetch)(sqlite3_pcache*, unsigned key, int createFlag);
+ void (*xUnpin)(sqlite3_pcache*, sqlite3_pcache_page*, int discard);
+ void (*xRekey)(sqlite3_pcache*, sqlite3_pcache_page*,
+ unsigned oldKey, unsigned newKey);
+ void (*xTruncate)(sqlite3_pcache*, unsigned iLimit);
+ void (*xDestroy)(sqlite3_pcache*);
+ void (*xShrink)(sqlite3_pcache*);
+};
+
+/*
+** This is the obsolete pcache_methods object that has now been replaced
+** by sqlite3_pcache_methods2. This object is not used by SQLite. It is
+** retained in the header file for backwards compatibility only.
*/
typedef struct sqlite3_pcache_methods sqlite3_pcache_methods;
struct sqlite3_pcache_methods {
@@ -5745,6 +6254,7 @@
void (*xDestroy)(sqlite3_pcache*);
};
+
/*
** CAPI3REF: Online Backup Object
**
@@ -5766,11 +6276,12 @@
**
** See Also: [Using the SQLite Online Backup API]
**
-** ^Exclusive access is required to the destination database for the
-** duration of the operation. ^However the source database is only
-** read-locked while it is actually being read; it is not locked
-** continuously for the entire backup operation. ^Thus, the backup may be
-** performed on a live source database without preventing other users from
+** ^SQLite holds a write transaction open on the destination database file
+** for the duration of the backup operation.
+** ^The source database is read-locked only while it is being read;
+** it is not locked continuously for the entire backup operation.
+** ^Thus, the backup may be performed on a live source database without
+** preventing other database connections from
** reading or writing to the source database while the backup is underway.
**
** ^(To perform a backup operation:
@@ -5785,7 +6296,7 @@
** There should be exactly one call to sqlite3_backup_finish() for each
** successful call to sqlite3_backup_init().
**
-** <b>sqlite3_backup_init()</b>
+** [[sqlite3_backup_init()]] <b>sqlite3_backup_init()</b>
**
** ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the
** [database connection] associated with the destination database
@@ -5797,11 +6308,11 @@
** sqlite3_backup_init(D,N,S,M) identify the [database connection]
** and database name of the source database, respectively.
** ^The source and destination [database connections] (parameters S and D)
-** must be different or else sqlite3_backup_init(D,N,S,M) will file with
+** must be different or else sqlite3_backup_init(D,N,S,M) will fail with
** an error.
**
** ^If an error occurs within sqlite3_backup_init(D,N,S,M), then NULL is
-** returned and an error code and error message are store3d in the
+** returned and an error code and error message are stored in the
** destination [database connection] D.
** ^The error code and message for the failed call to sqlite3_backup_init()
** can be retrieved using the [sqlite3_errcode()], [sqlite3_errmsg()], and/or
@@ -5812,13 +6323,13 @@
** sqlite3_backup_finish() functions to perform the specified backup
** operation.
**
-** <b>sqlite3_backup_step()</b>
+** [[sqlite3_backup_step()]] <b>sqlite3_backup_step()</b>
**
** ^Function sqlite3_backup_step(B,N) will copy up to N pages between
** the source and destination databases specified by [sqlite3_backup] object B.
** ^If N is negative, all remaining source pages are copied.
** ^If sqlite3_backup_step(B,N) successfully copies N pages and there
-** are still more pages to be copied, then the function resturns [SQLITE_OK].
+** are still more pages to be copied, then the function returns [SQLITE_OK].
** ^If sqlite3_backup_step(B,N) successfully finishes copying all pages
** from source to destination, then it returns [SQLITE_DONE].
** ^If an error occurs while running sqlite3_backup_step(B,N),
@@ -5832,7 +6343,7 @@
** <li> the destination database was opened read-only, or
** <li> the destination database is using write-ahead-log journaling
** and the destination and source page sizes differ, or
-** <li> The destination database is an in-memory database and the
+** <li> the destination database is an in-memory database and the
** destination and source page sizes differ.
** </ol>)^
**
@@ -5869,7 +6380,7 @@
** by the backup operation, then the backup database is automatically
** updated at the same time.
**
-** <b>sqlite3_backup_finish()</b>
+** [[sqlite3_backup_finish()]] <b>sqlite3_backup_finish()</b>
**
** When sqlite3_backup_step() has returned [SQLITE_DONE], or when the
** application wishes to abandon the backup operation, the application
@@ -5892,7 +6403,8 @@
** is not a permanent error and does not affect the return value of
** sqlite3_backup_finish().
**
-** <b>sqlite3_backup_remaining(), sqlite3_backup_pagecount()</b>
+** [[sqlite3_backup__remaining()]] [[sqlite3_backup_pagecount()]]
+** <b>sqlite3_backup_remaining() and sqlite3_backup_pagecount()</b>
**
** ^Each call to sqlite3_backup_step() sets two values inside
** the [sqlite3_backup] object: the number of pages still to be backed
@@ -6163,7 +6675,8 @@
** from SQL.
**
** ^Every new [database connection] defaults to having the auto-checkpoint
-** enabled with a threshold of 1000 pages. The use of this interface
+** enabled with a threshold of 1000 or [SQLITE_DEFAULT_WAL_AUTOCHECKPOINT]
+** pages. The use of this interface
** is only necessary if the default setting is found to be suboptimal
** for a particular application.
*/
@@ -6182,10 +6695,190 @@
** from SQL. ^The [sqlite3_wal_autocheckpoint()] interface and the
** [wal_autocheckpoint pragma] can be used to cause this interface to be
** run whenever the WAL reaches a certain size threshold.
+**
+** See also: [sqlite3_wal_checkpoint_v2()]
*/
SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb);
/*
+** CAPI3REF: Checkpoint a database
+**
+** Run a checkpoint operation on WAL database zDb attached to database
+** handle db. The specific operation is determined by the value of the
+** eMode parameter:
+**
+** <dl>
+** <dt>SQLITE_CHECKPOINT_PASSIVE<dd>
+** Checkpoint as many frames as possible without waiting for any database
+** readers or writers to finish. Sync the db file if all frames in the log
+** are checkpointed. This mode is the same as calling
+** sqlite3_wal_checkpoint(). The busy-handler callback is never invoked.
+**
+** <dt>SQLITE_CHECKPOINT_FULL<dd>
+** This mode blocks (calls the busy-handler callback) until there is no
+** database writer and all readers are reading from the most recent database
+** snapshot. It then checkpoints all frames in the log file and syncs the
+** database file. This call blocks database writers while it is running,
+** but not database readers.
+**
+** <dt>SQLITE_CHECKPOINT_RESTART<dd>
+** This mode works the same way as SQLITE_CHECKPOINT_FULL, except after
+** checkpointing the log file it blocks (calls the busy-handler callback)
+** until all readers are reading from the database file only. This ensures
+** that the next client to write to the database file restarts the log file
+** from the beginning. This call blocks database writers while it is running,
+** but not database readers.
+** </dl>
+**
+** If pnLog is not NULL, then *pnLog is set to the total number of frames in
+** the log file before returning. If pnCkpt is not NULL, then *pnCkpt is set to
+** the total number of checkpointed frames (including any that were already
+** checkpointed when this function is called). *pnLog and *pnCkpt may be
+** populated even if sqlite3_wal_checkpoint_v2() returns other than SQLITE_OK.
+** If no values are available because of an error, they are both set to -1
+** before returning to communicate this to the caller.
+**
+** All calls obtain an exclusive "checkpoint" lock on the database file. If
+** any other process is running a checkpoint operation at the same time, the
+** lock cannot be obtained and SQLITE_BUSY is returned. Even if there is a
+** busy-handler configured, it will not be invoked in this case.
+**
+** The SQLITE_CHECKPOINT_FULL and RESTART modes also obtain the exclusive
+** "writer" lock on the database file. If the writer lock cannot be obtained
+** immediately, and a busy-handler is configured, it is invoked and the writer
+** lock retried until either the busy-handler returns 0 or the lock is
+** successfully obtained. The busy-handler is also invoked while waiting for
+** database readers as described above. If the busy-handler returns 0 before
+** the writer lock is obtained or while waiting for database readers, the
+** checkpoint operation proceeds from that point in the same way as
+** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible
+** without blocking any further. SQLITE_BUSY is returned in this case.
+**
+** If parameter zDb is NULL or points to a zero length string, then the
+** specified operation is attempted on all WAL databases. In this case the
+** values written to output parameters *pnLog and *pnCkpt are undefined. If
+** an SQLITE_BUSY error is encountered when processing one or more of the
+** attached WAL databases, the operation is still attempted on any remaining
+** attached databases and SQLITE_BUSY is returned to the caller. If any other
+** error occurs while processing an attached database, processing is abandoned
+** and the error code returned to the caller immediately. If no error
+** (SQLITE_BUSY or otherwise) is encountered while processing the attached
+** databases, SQLITE_OK is returned.
+**
+** If database zDb is the name of an attached database that is not in WAL
+** mode, SQLITE_OK is returned and both *pnLog and *pnCkpt set to -1. If
+** zDb is not NULL (or a zero length string) and is not the name of any
+** attached database, SQLITE_ERROR is returned to the caller.
+*/
+SQLITE_API int sqlite3_wal_checkpoint_v2(
+ sqlite3 *db, /* Database handle */
+ const char *zDb, /* Name of attached database (or NULL) */
+ int eMode, /* SQLITE_CHECKPOINT_* value */
+ int *pnLog, /* OUT: Size of WAL log in frames */
+ int *pnCkpt /* OUT: Total number of frames checkpointed */
+);
+
+/*
+** CAPI3REF: Checkpoint operation parameters
+**
+** These constants can be used as the 3rd parameter to
+** [sqlite3_wal_checkpoint_v2()]. See the [sqlite3_wal_checkpoint_v2()]
+** documentation for additional information about the meaning and use of
+** each of these values.
+*/
+#define SQLITE_CHECKPOINT_PASSIVE 0
+#define SQLITE_CHECKPOINT_FULL 1
+#define SQLITE_CHECKPOINT_RESTART 2
+
+/*
+** CAPI3REF: Virtual Table Interface Configuration
+**
+** This function may be called by either the [xConnect] or [xCreate] method
+** of a [virtual table] implementation to configure
+** various facets of the virtual table interface.
+**
+** If this interface is invoked outside the context of an xConnect or
+** xCreate virtual table method then the behavior is undefined.
+**
+** At present, there is only one option that may be configured using
+** this function. (See [SQLITE_VTAB_CONSTRAINT_SUPPORT].) Further options
+** may be added in the future.
+*/
+SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...);
+
+/*
+** CAPI3REF: Virtual Table Configuration Options
+**
+** These macros define the various options to the
+** [sqlite3_vtab_config()] interface that [virtual table] implementations
+** can use to customize and optimize their behavior.
+**
+** <dl>
+** <dt>SQLITE_VTAB_CONSTRAINT_SUPPORT
+** <dd>Calls of the form
+** [sqlite3_vtab_config](db,SQLITE_VTAB_CONSTRAINT_SUPPORT,X) are supported,
+** where X is an integer. If X is zero, then the [virtual table] whose
+** [xCreate] or [xConnect] method invoked [sqlite3_vtab_config()] does not
+** support constraints. In this configuration (which is the default) if
+** a call to the [xUpdate] method returns [SQLITE_CONSTRAINT], then the entire
+** statement is rolled back as if [ON CONFLICT | OR ABORT] had been
+** specified as part of the users SQL statement, regardless of the actual
+** ON CONFLICT mode specified.
+**
+** If X is non-zero, then the virtual table implementation guarantees
+** that if [xUpdate] returns [SQLITE_CONSTRAINT], it will do so before
+** any modifications to internal or persistent data structures have been made.
+** If the [ON CONFLICT] mode is ABORT, FAIL, IGNORE or ROLLBACK, SQLite
+** is able to roll back a statement or database transaction, and abandon
+** or continue processing the current SQL statement as appropriate.
+** If the ON CONFLICT mode is REPLACE and the [xUpdate] method returns
+** [SQLITE_CONSTRAINT], SQLite handles this as if the ON CONFLICT mode
+** had been ABORT.
+**
+** Virtual table implementations that are required to handle OR REPLACE
+** must do so within the [xUpdate] method. If a call to the
+** [sqlite3_vtab_on_conflict()] function indicates that the current ON
+** CONFLICT policy is REPLACE, the virtual table implementation should
+** silently replace the appropriate rows within the xUpdate callback and
+** return SQLITE_OK. Or, if this is not possible, it may return
+** SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT
+** constraint handling.
+** </dl>
+*/
+#define SQLITE_VTAB_CONSTRAINT_SUPPORT 1
+
+/*
+** CAPI3REF: Determine The Virtual Table Conflict Policy
+**
+** This function may only be called from within a call to the [xUpdate] method
+** of a [virtual table] implementation for an INSERT or UPDATE operation. ^The
+** value returned is one of [SQLITE_ROLLBACK], [SQLITE_IGNORE], [SQLITE_FAIL],
+** [SQLITE_ABORT], or [SQLITE_REPLACE], according to the [ON CONFLICT] mode
+** of the SQL statement that triggered the call to the [xUpdate] method of the
+** [virtual table].
+*/
+SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *);
+
+/*
+** CAPI3REF: Conflict resolution modes
+**
+** These constants are returned by [sqlite3_vtab_on_conflict()] to
+** inform a [virtual table] implementation what the [ON CONFLICT] mode
+** is for the SQL statement being evaluated.
+**
+** Note that the [SQLITE_IGNORE] constant is also used as a potential
+** return value from the [sqlite3_set_authorizer()] callback and that
+** [SQLITE_ABORT] is also a [result code].
+*/
+#define SQLITE_ROLLBACK 1
+/* #define SQLITE_IGNORE 2 // Also used by sqlite3_authorizer() callback */
+#define SQLITE_FAIL 3
+/* #define SQLITE_ABORT 4 // Also an error code */
+#define SQLITE_REPLACE 5
+
+
+
+/*
** Undo the hack that converts floating point types to integer for
** builds on processors without floating point support.
*/
diff --git a/dist/sqlite3ext.h b/dist/sqlite3ext.h
new file mode 100644
index 0000000..5abcde2
--- /dev/null
+++ b/dist/sqlite3ext.h
@@ -0,0 +1,447 @@
+/*
+** 2006 June 7
+**
+** The author disclaims copyright to this source code. In place of
+** a legal notice, here is a blessing:
+**
+** May you do good and not evil.
+** May you find forgiveness for yourself and forgive others.
+** May you share freely, never taking more than you give.
+**
+*************************************************************************
+** This header file defines the SQLite interface for use by
+** shared libraries that want to be imported as extensions into
+** an SQLite instance. Shared libraries that intend to be loaded
+** as extensions by SQLite should #include this file instead of
+** sqlite3.h.
+*/
+#ifndef _SQLITE3EXT_H_
+#define _SQLITE3EXT_H_
+#include "sqlite3.h"
+
+typedef struct sqlite3_api_routines sqlite3_api_routines;
+
+/*
+** The following structure holds pointers to all of the SQLite API
+** routines.
+**
+** WARNING: In order to maintain backwards compatibility, add new
+** interfaces to the end of this structure only. If you insert new
+** interfaces in the middle of this structure, then older different
+** versions of SQLite will not be able to load each others' shared
+** libraries!
+*/
+struct sqlite3_api_routines {
+ void * (*aggregate_context)(sqlite3_context*,int nBytes);
+ int (*aggregate_count)(sqlite3_context*);
+ int (*bind_blob)(sqlite3_stmt*,int,const void*,int n,void(*)(void*));
+ int (*bind_double)(sqlite3_stmt*,int,double);
+ int (*bind_int)(sqlite3_stmt*,int,int);
+ int (*bind_int64)(sqlite3_stmt*,int,sqlite_int64);
+ int (*bind_null)(sqlite3_stmt*,int);
+ int (*bind_parameter_count)(sqlite3_stmt*);
+ int (*bind_parameter_index)(sqlite3_stmt*,const char*zName);
+ const char * (*bind_parameter_name)(sqlite3_stmt*,int);
+ int (*bind_text)(sqlite3_stmt*,int,const char*,int n,void(*)(void*));
+ int (*bind_text16)(sqlite3_stmt*,int,const void*,int,void(*)(void*));
+ int (*bind_value)(sqlite3_stmt*,int,const sqlite3_value*);
+ int (*busy_handler)(sqlite3*,int(*)(void*,int),void*);
+ int (*busy_timeout)(sqlite3*,int ms);
+ int (*changes)(sqlite3*);
+ int (*close)(sqlite3*);
+ int (*collation_needed)(sqlite3*,void*,void(*)(void*,sqlite3*,
+ int eTextRep,const char*));
+ int (*collation_needed16)(sqlite3*,void*,void(*)(void*,sqlite3*,
+ int eTextRep,const void*));
+ const void * (*column_blob)(sqlite3_stmt*,int iCol);
+ int (*column_bytes)(sqlite3_stmt*,int iCol);
+ int (*column_bytes16)(sqlite3_stmt*,int iCol);
+ int (*column_count)(sqlite3_stmt*pStmt);
+ const char * (*column_database_name)(sqlite3_stmt*,int);
+ const void * (*column_database_name16)(sqlite3_stmt*,int);
+ const char * (*column_decltype)(sqlite3_stmt*,int i);
+ const void * (*column_decltype16)(sqlite3_stmt*,int);
+ double (*column_double)(sqlite3_stmt*,int iCol);
+ int (*column_int)(sqlite3_stmt*,int iCol);
+ sqlite_int64 (*column_int64)(sqlite3_stmt*,int iCol);
+ const char * (*column_name)(sqlite3_stmt*,int);
+ const void * (*column_name16)(sqlite3_stmt*,int);
+ const char * (*column_origin_name)(sqlite3_stmt*,int);
+ const void * (*column_origin_name16)(sqlite3_stmt*,int);
+ const char * (*column_table_name)(sqlite3_stmt*,int);
+ const void * (*column_table_name16)(sqlite3_stmt*,int);
+ const unsigned char * (*column_text)(sqlite3_stmt*,int iCol);
+ const void * (*column_text16)(sqlite3_stmt*,int iCol);
+ int (*column_type)(sqlite3_stmt*,int iCol);
+ sqlite3_value* (*column_value)(sqlite3_stmt*,int iCol);
+ void * (*commit_hook)(sqlite3*,int(*)(void*),void*);
+ int (*complete)(const char*sql);
+ int (*complete16)(const void*sql);
+ int (*create_collation)(sqlite3*,const char*,int,void*,
+ int(*)(void*,int,const void*,int,const void*));
+ int (*create_collation16)(sqlite3*,const void*,int,void*,
+ int(*)(void*,int,const void*,int,const void*));
+ int (*create_function)(sqlite3*,const char*,int,int,void*,
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
+ void (*xFinal)(sqlite3_context*));
+ int (*create_function16)(sqlite3*,const void*,int,int,void*,
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
+ void (*xFinal)(sqlite3_context*));
+ int (*create_module)(sqlite3*,const char*,const sqlite3_module*,void*);
+ int (*data_count)(sqlite3_stmt*pStmt);
+ sqlite3 * (*db_handle)(sqlite3_stmt*);
+ int (*declare_vtab)(sqlite3*,const char*);
+ int (*enable_shared_cache)(int);
+ int (*errcode)(sqlite3*db);
+ const char * (*errmsg)(sqlite3*);
+ const void * (*errmsg16)(sqlite3*);
+ int (*exec)(sqlite3*,const char*,sqlite3_callback,void*,char**);
+ int (*expired)(sqlite3_stmt*);
+ int (*finalize)(sqlite3_stmt*pStmt);
+ void (*free)(void*);
+ void (*free_table)(char**result);
+ int (*get_autocommit)(sqlite3*);
+ void * (*get_auxdata)(sqlite3_context*,int);
+ int (*get_table)(sqlite3*,const char*,char***,int*,int*,char**);
+ int (*global_recover)(void);
+ void (*interruptx)(sqlite3*);
+ sqlite_int64 (*last_insert_rowid)(sqlite3*);
+ const char * (*libversion)(void);
+ int (*libversion_number)(void);
+ void *(*malloc)(int);
+ char * (*mprintf)(const char*,...);
+ int (*open)(const char*,sqlite3**);
+ int (*open16)(const void*,sqlite3**);
+ int (*prepare)(sqlite3*,const char*,int,sqlite3_stmt**,const char**);
+ int (*prepare16)(sqlite3*,const void*,int,sqlite3_stmt**,const void**);
+ void * (*profile)(sqlite3*,void(*)(void*,const char*,sqlite_uint64),void*);
+ void (*progress_handler)(sqlite3*,int,int(*)(void*),void*);
+ void *(*realloc)(void*,int);
+ int (*reset)(sqlite3_stmt*pStmt);
+ void (*result_blob)(sqlite3_context*,const void*,int,void(*)(void*));
+ void (*result_double)(sqlite3_context*,double);
+ void (*result_error)(sqlite3_context*,const char*,int);
+ void (*result_error16)(sqlite3_context*,const void*,int);
+ void (*result_int)(sqlite3_context*,int);
+ void (*result_int64)(sqlite3_context*,sqlite_int64);
+ void (*result_null)(sqlite3_context*);
+ void (*result_text)(sqlite3_context*,const char*,int,void(*)(void*));
+ void (*result_text16)(sqlite3_context*,const void*,int,void(*)(void*));
+ void (*result_text16be)(sqlite3_context*,const void*,int,void(*)(void*));
+ void (*result_text16le)(sqlite3_context*,const void*,int,void(*)(void*));
+ void (*result_value)(sqlite3_context*,sqlite3_value*);
+ void * (*rollback_hook)(sqlite3*,void(*)(void*),void*);
+ int (*set_authorizer)(sqlite3*,int(*)(void*,int,const char*,const char*,
+ const char*,const char*),void*);
+ void (*set_auxdata)(sqlite3_context*,int,void*,void (*)(void*));
+ char * (*snprintf)(int,char*,const char*,...);
+ int (*step)(sqlite3_stmt*);
+ int (*table_column_metadata)(sqlite3*,const char*,const char*,const char*,
+ char const**,char const**,int*,int*,int*);
+ void (*thread_cleanup)(void);
+ int (*total_changes)(sqlite3*);
+ void * (*trace)(sqlite3*,void(*xTrace)(void*,const char*),void*);
+ int (*transfer_bindings)(sqlite3_stmt*,sqlite3_stmt*);
+ void * (*update_hook)(sqlite3*,void(*)(void*,int ,char const*,char const*,
+ sqlite_int64),void*);
+ void * (*user_data)(sqlite3_context*);
+ const void * (*value_blob)(sqlite3_value*);
+ int (*value_bytes)(sqlite3_value*);
+ int (*value_bytes16)(sqlite3_value*);
+ double (*value_double)(sqlite3_value*);
+ int (*value_int)(sqlite3_value*);
+ sqlite_int64 (*value_int64)(sqlite3_value*);
+ int (*value_numeric_type)(sqlite3_value*);
+ const unsigned char * (*value_text)(sqlite3_value*);
+ const void * (*value_text16)(sqlite3_value*);
+ const void * (*value_text16be)(sqlite3_value*);
+ const void * (*value_text16le)(sqlite3_value*);
+ int (*value_type)(sqlite3_value*);
+ char *(*vmprintf)(const char*,va_list);
+ /* Added ??? */
+ int (*overload_function)(sqlite3*, const char *zFuncName, int nArg);
+ /* Added by 3.3.13 */
+ int (*prepare_v2)(sqlite3*,const char*,int,sqlite3_stmt**,const char**);
+ int (*prepare16_v2)(sqlite3*,const void*,int,sqlite3_stmt**,const void**);
+ int (*clear_bindings)(sqlite3_stmt*);
+ /* Added by 3.4.1 */
+ int (*create_module_v2)(sqlite3*,const char*,const sqlite3_module*,void*,
+ void (*xDestroy)(void *));
+ /* Added by 3.5.0 */
+ int (*bind_zeroblob)(sqlite3_stmt*,int,int);
+ int (*blob_bytes)(sqlite3_blob*);
+ int (*blob_close)(sqlite3_blob*);
+ int (*blob_open)(sqlite3*,const char*,const char*,const char*,sqlite3_int64,
+ int,sqlite3_blob**);
+ int (*blob_read)(sqlite3_blob*,void*,int,int);
+ int (*blob_write)(sqlite3_blob*,const void*,int,int);
+ int (*create_collation_v2)(sqlite3*,const char*,int,void*,
+ int(*)(void*,int,const void*,int,const void*),
+ void(*)(void*));
+ int (*file_control)(sqlite3*,const char*,int,void*);
+ sqlite3_int64 (*memory_highwater)(int);
+ sqlite3_int64 (*memory_used)(void);
+ sqlite3_mutex *(*mutex_alloc)(int);
+ void (*mutex_enter)(sqlite3_mutex*);
+ void (*mutex_free)(sqlite3_mutex*);
+ void (*mutex_leave)(sqlite3_mutex*);
+ int (*mutex_try)(sqlite3_mutex*);
+ int (*open_v2)(const char*,sqlite3**,int,const char*);
+ int (*release_memory)(int);
+ void (*result_error_nomem)(sqlite3_context*);
+ void (*result_error_toobig)(sqlite3_context*);
+ int (*sleep)(int);
+ void (*soft_heap_limit)(int);
+ sqlite3_vfs *(*vfs_find)(const char*);
+ int (*vfs_register)(sqlite3_vfs*,int);
+ int (*vfs_unregister)(sqlite3_vfs*);
+ int (*xthreadsafe)(void);
+ void (*result_zeroblob)(sqlite3_context*,int);
+ void (*result_error_code)(sqlite3_context*,int);
+ int (*test_control)(int, ...);
+ void (*randomness)(int,void*);
+ sqlite3 *(*context_db_handle)(sqlite3_context*);
+ int (*extended_result_codes)(sqlite3*,int);
+ int (*limit)(sqlite3*,int,int);
+ sqlite3_stmt *(*next_stmt)(sqlite3*,sqlite3_stmt*);
+ const char *(*sql)(sqlite3_stmt*);
+ int (*status)(int,int*,int*,int);
+ int (*backup_finish)(sqlite3_backup*);
+ sqlite3_backup *(*backup_init)(sqlite3*,const char*,sqlite3*,const char*);
+ int (*backup_pagecount)(sqlite3_backup*);
+ int (*backup_remaining)(sqlite3_backup*);
+ int (*backup_step)(sqlite3_backup*,int);
+ const char *(*compileoption_get)(int);
+ int (*compileoption_used)(const char*);
+ int (*create_function_v2)(sqlite3*,const char*,int,int,void*,
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
+ void (*xFinal)(sqlite3_context*),
+ void(*xDestroy)(void*));
+ int (*db_config)(sqlite3*,int,...);
+ sqlite3_mutex *(*db_mutex)(sqlite3*);
+ int (*db_status)(sqlite3*,int,int*,int*,int);
+ int (*extended_errcode)(sqlite3*);
+ void (*log)(int,const char*,...);
+ sqlite3_int64 (*soft_heap_limit64)(sqlite3_int64);
+ const char *(*sourceid)(void);
+ int (*stmt_status)(sqlite3_stmt*,int,int);
+ int (*strnicmp)(const char*,const char*,int);
+ int (*unlock_notify)(sqlite3*,void(*)(void**,int),void*);
+ int (*wal_autocheckpoint)(sqlite3*,int);
+ int (*wal_checkpoint)(sqlite3*,const char*);
+ void *(*wal_hook)(sqlite3*,int(*)(void*,sqlite3*,const char*,int),void*);
+ int (*blob_reopen)(sqlite3_blob*,sqlite3_int64);
+ int (*vtab_config)(sqlite3*,int op,...);
+ int (*vtab_on_conflict)(sqlite3*);
+};
+
+/*
+** The following macros redefine the API routines so that they are
+** redirected throught the global sqlite3_api structure.
+**
+** This header file is also used by the loadext.c source file
+** (part of the main SQLite library - not an extension) so that
+** it can get access to the sqlite3_api_routines structure
+** definition. But the main library does not want to redefine
+** the API. So the redefinition macros are only valid if the
+** SQLITE_CORE macros is undefined.
+*/
+#ifndef SQLITE_CORE
+#define sqlite3_aggregate_context sqlite3_api->aggregate_context
+#ifndef SQLITE_OMIT_DEPRECATED
+#define sqlite3_aggregate_count sqlite3_api->aggregate_count
+#endif
+#define sqlite3_bind_blob sqlite3_api->bind_blob
+#define sqlite3_bind_double sqlite3_api->bind_double
+#define sqlite3_bind_int sqlite3_api->bind_int
+#define sqlite3_bind_int64 sqlite3_api->bind_int64
+#define sqlite3_bind_null sqlite3_api->bind_null
+#define sqlite3_bind_parameter_count sqlite3_api->bind_parameter_count
+#define sqlite3_bind_parameter_index sqlite3_api->bind_parameter_index
+#define sqlite3_bind_parameter_name sqlite3_api->bind_parameter_name
+#define sqlite3_bind_text sqlite3_api->bind_text
+#define sqlite3_bind_text16 sqlite3_api->bind_text16
+#define sqlite3_bind_value sqlite3_api->bind_value
+#define sqlite3_busy_handler sqlite3_api->busy_handler
+#define sqlite3_busy_timeout sqlite3_api->busy_timeout
+#define sqlite3_changes sqlite3_api->changes
+#define sqlite3_close sqlite3_api->close
+#define sqlite3_collation_needed sqlite3_api->collation_needed
+#define sqlite3_collation_needed16 sqlite3_api->collation_needed16
+#define sqlite3_column_blob sqlite3_api->column_blob
+#define sqlite3_column_bytes sqlite3_api->column_bytes
+#define sqlite3_column_bytes16 sqlite3_api->column_bytes16
+#define sqlite3_column_count sqlite3_api->column_count
+#define sqlite3_column_database_name sqlite3_api->column_database_name
+#define sqlite3_column_database_name16 sqlite3_api->column_database_name16
+#define sqlite3_column_decltype sqlite3_api->column_decltype
+#define sqlite3_column_decltype16 sqlite3_api->column_decltype16
+#define sqlite3_column_double sqlite3_api->column_double
+#define sqlite3_column_int sqlite3_api->column_int
+#define sqlite3_column_int64 sqlite3_api->column_int64
+#define sqlite3_column_name sqlite3_api->column_name
+#define sqlite3_column_name16 sqlite3_api->column_name16
+#define sqlite3_column_origin_name sqlite3_api->column_origin_name
+#define sqlite3_column_origin_name16 sqlite3_api->column_origin_name16
+#define sqlite3_column_table_name sqlite3_api->column_table_name
+#define sqlite3_column_table_name16 sqlite3_api->column_table_name16
+#define sqlite3_column_text sqlite3_api->column_text
+#define sqlite3_column_text16 sqlite3_api->column_text16
+#define sqlite3_column_type sqlite3_api->column_type
+#define sqlite3_column_value sqlite3_api->column_value
+#define sqlite3_commit_hook sqlite3_api->commit_hook
+#define sqlite3_complete sqlite3_api->complete
+#define sqlite3_complete16 sqlite3_api->complete16
+#define sqlite3_create_collation sqlite3_api->create_collation
+#define sqlite3_create_collation16 sqlite3_api->create_collation16
+#define sqlite3_create_function sqlite3_api->create_function
+#define sqlite3_create_function16 sqlite3_api->create_function16
+#define sqlite3_create_module sqlite3_api->create_module
+#define sqlite3_create_module_v2 sqlite3_api->create_module_v2
+#define sqlite3_data_count sqlite3_api->data_count
+#define sqlite3_db_handle sqlite3_api->db_handle
+#define sqlite3_declare_vtab sqlite3_api->declare_vtab
+#define sqlite3_enable_shared_cache sqlite3_api->enable_shared_cache
+#define sqlite3_errcode sqlite3_api->errcode
+#define sqlite3_errmsg sqlite3_api->errmsg
+#define sqlite3_errmsg16 sqlite3_api->errmsg16
+#define sqlite3_exec sqlite3_api->exec
+#ifndef SQLITE_OMIT_DEPRECATED
+#define sqlite3_expired sqlite3_api->expired
+#endif
+#define sqlite3_finalize sqlite3_api->finalize
+#define sqlite3_free sqlite3_api->free
+#define sqlite3_free_table sqlite3_api->free_table
+#define sqlite3_get_autocommit sqlite3_api->get_autocommit
+#define sqlite3_get_auxdata sqlite3_api->get_auxdata
+#define sqlite3_get_table sqlite3_api->get_table
+#ifndef SQLITE_OMIT_DEPRECATED
+#define sqlite3_global_recover sqlite3_api->global_recover
+#endif
+#define sqlite3_interrupt sqlite3_api->interruptx
+#define sqlite3_last_insert_rowid sqlite3_api->last_insert_rowid
+#define sqlite3_libversion sqlite3_api->libversion
+#define sqlite3_libversion_number sqlite3_api->libversion_number
+#define sqlite3_malloc sqlite3_api->malloc
+#define sqlite3_mprintf sqlite3_api->mprintf
+#define sqlite3_open sqlite3_api->open
+#define sqlite3_open16 sqlite3_api->open16
+#define sqlite3_prepare sqlite3_api->prepare
+#define sqlite3_prepare16 sqlite3_api->prepare16
+#define sqlite3_prepare_v2 sqlite3_api->prepare_v2
+#define sqlite3_prepare16_v2 sqlite3_api->prepare16_v2
+#define sqlite3_profile sqlite3_api->profile
+#define sqlite3_progress_handler sqlite3_api->progress_handler
+#define sqlite3_realloc sqlite3_api->realloc
+#define sqlite3_reset sqlite3_api->reset
+#define sqlite3_result_blob sqlite3_api->result_blob
+#define sqlite3_result_double sqlite3_api->result_double
+#define sqlite3_result_error sqlite3_api->result_error
+#define sqlite3_result_error16 sqlite3_api->result_error16
+#define sqlite3_result_int sqlite3_api->result_int
+#define sqlite3_result_int64 sqlite3_api->result_int64
+#define sqlite3_result_null sqlite3_api->result_null
+#define sqlite3_result_text sqlite3_api->result_text
+#define sqlite3_result_text16 sqlite3_api->result_text16
+#define sqlite3_result_text16be sqlite3_api->result_text16be
+#define sqlite3_result_text16le sqlite3_api->result_text16le
+#define sqlite3_result_value sqlite3_api->result_value
+#define sqlite3_rollback_hook sqlite3_api->rollback_hook
+#define sqlite3_set_authorizer sqlite3_api->set_authorizer
+#define sqlite3_set_auxdata sqlite3_api->set_auxdata
+#define sqlite3_snprintf sqlite3_api->snprintf
+#define sqlite3_step sqlite3_api->step
+#define sqlite3_table_column_metadata sqlite3_api->table_column_metadata
+#define sqlite3_thread_cleanup sqlite3_api->thread_cleanup
+#define sqlite3_total_changes sqlite3_api->total_changes
+#define sqlite3_trace sqlite3_api->trace
+#ifndef SQLITE_OMIT_DEPRECATED
+#define sqlite3_transfer_bindings sqlite3_api->transfer_bindings
+#endif
+#define sqlite3_update_hook sqlite3_api->update_hook
+#define sqlite3_user_data sqlite3_api->user_data
+#define sqlite3_value_blob sqlite3_api->value_blob
+#define sqlite3_value_bytes sqlite3_api->value_bytes
+#define sqlite3_value_bytes16 sqlite3_api->value_bytes16
+#define sqlite3_value_double sqlite3_api->value_double
+#define sqlite3_value_int sqlite3_api->value_int
+#define sqlite3_value_int64 sqlite3_api->value_int64
+#define sqlite3_value_numeric_type sqlite3_api->value_numeric_type
+#define sqlite3_value_text sqlite3_api->value_text
+#define sqlite3_value_text16 sqlite3_api->value_text16
+#define sqlite3_value_text16be sqlite3_api->value_text16be
+#define sqlite3_value_text16le sqlite3_api->value_text16le
+#define sqlite3_value_type sqlite3_api->value_type
+#define sqlite3_vmprintf sqlite3_api->vmprintf
+#define sqlite3_overload_function sqlite3_api->overload_function
+#define sqlite3_prepare_v2 sqlite3_api->prepare_v2
+#define sqlite3_prepare16_v2 sqlite3_api->prepare16_v2
+#define sqlite3_clear_bindings sqlite3_api->clear_bindings
+#define sqlite3_bind_zeroblob sqlite3_api->bind_zeroblob
+#define sqlite3_blob_bytes sqlite3_api->blob_bytes
+#define sqlite3_blob_close sqlite3_api->blob_close
+#define sqlite3_blob_open sqlite3_api->blob_open
+#define sqlite3_blob_read sqlite3_api->blob_read
+#define sqlite3_blob_write sqlite3_api->blob_write
+#define sqlite3_create_collation_v2 sqlite3_api->create_collation_v2
+#define sqlite3_file_control sqlite3_api->file_control
+#define sqlite3_memory_highwater sqlite3_api->memory_highwater
+#define sqlite3_memory_used sqlite3_api->memory_used
+#define sqlite3_mutex_alloc sqlite3_api->mutex_alloc
+#define sqlite3_mutex_enter sqlite3_api->mutex_enter
+#define sqlite3_mutex_free sqlite3_api->mutex_free
+#define sqlite3_mutex_leave sqlite3_api->mutex_leave
+#define sqlite3_mutex_try sqlite3_api->mutex_try
+#define sqlite3_open_v2 sqlite3_api->open_v2
+#define sqlite3_release_memory sqlite3_api->release_memory
+#define sqlite3_result_error_nomem sqlite3_api->result_error_nomem
+#define sqlite3_result_error_toobig sqlite3_api->result_error_toobig
+#define sqlite3_sleep sqlite3_api->sleep
+#define sqlite3_soft_heap_limit sqlite3_api->soft_heap_limit
+#define sqlite3_vfs_find sqlite3_api->vfs_find
+#define sqlite3_vfs_register sqlite3_api->vfs_register
+#define sqlite3_vfs_unregister sqlite3_api->vfs_unregister
+#define sqlite3_threadsafe sqlite3_api->xthreadsafe
+#define sqlite3_result_zeroblob sqlite3_api->result_zeroblob
+#define sqlite3_result_error_code sqlite3_api->result_error_code
+#define sqlite3_test_control sqlite3_api->test_control
+#define sqlite3_randomness sqlite3_api->randomness
+#define sqlite3_context_db_handle sqlite3_api->context_db_handle
+#define sqlite3_extended_result_codes sqlite3_api->extended_result_codes
+#define sqlite3_limit sqlite3_api->limit
+#define sqlite3_next_stmt sqlite3_api->next_stmt
+#define sqlite3_sql sqlite3_api->sql
+#define sqlite3_status sqlite3_api->status
+#define sqlite3_backup_finish sqlite3_api->backup_finish
+#define sqlite3_backup_init sqlite3_api->backup_init
+#define sqlite3_backup_pagecount sqlite3_api->backup_pagecount
+#define sqlite3_backup_remaining sqlite3_api->backup_remaining
+#define sqlite3_backup_step sqlite3_api->backup_step
+#define sqlite3_compileoption_get sqlite3_api->compileoption_get
+#define sqlite3_compileoption_used sqlite3_api->compileoption_used
+#define sqlite3_create_function_v2 sqlite3_api->create_function_v2
+#define sqlite3_db_config sqlite3_api->db_config
+#define sqlite3_db_mutex sqlite3_api->db_mutex
+#define sqlite3_db_status sqlite3_api->db_status
+#define sqlite3_extended_errcode sqlite3_api->extended_errcode
+#define sqlite3_log sqlite3_api->log
+#define sqlite3_soft_heap_limit64 sqlite3_api->soft_heap_limit64
+#define sqlite3_sourceid sqlite3_api->sourceid
+#define sqlite3_stmt_status sqlite3_api->stmt_status
+#define sqlite3_strnicmp sqlite3_api->strnicmp
+#define sqlite3_unlock_notify sqlite3_api->unlock_notify
+#define sqlite3_wal_autocheckpoint sqlite3_api->wal_autocheckpoint
+#define sqlite3_wal_checkpoint sqlite3_api->wal_checkpoint
+#define sqlite3_wal_hook sqlite3_api->wal_hook
+#define sqlite3_blob_reopen sqlite3_api->blob_reopen
+#define sqlite3_vtab_config sqlite3_api->vtab_config
+#define sqlite3_vtab_on_conflict sqlite3_api->vtab_on_conflict
+#endif /* SQLITE_CORE */
+
+#define SQLITE_EXTENSION_INIT1 const sqlite3_api_routines *sqlite3_api = 0;
+#define SQLITE_EXTENSION_INIT2(v) sqlite3_api = v;
+
+#endif /* _SQLITE3EXT_H_ */
diff --git a/dist/sqlite3ext.h.orig b/dist/sqlite3ext.h.orig
new file mode 100644
index 0000000..5abcde2
--- /dev/null
+++ b/dist/sqlite3ext.h.orig
@@ -0,0 +1,447 @@
+/*
+** 2006 June 7
+**
+** The author disclaims copyright to this source code. In place of
+** a legal notice, here is a blessing:
+**
+** May you do good and not evil.
+** May you find forgiveness for yourself and forgive others.
+** May you share freely, never taking more than you give.
+**
+*************************************************************************
+** This header file defines the SQLite interface for use by
+** shared libraries that want to be imported as extensions into
+** an SQLite instance. Shared libraries that intend to be loaded
+** as extensions by SQLite should #include this file instead of
+** sqlite3.h.
+*/
+#ifndef _SQLITE3EXT_H_
+#define _SQLITE3EXT_H_
+#include "sqlite3.h"
+
+typedef struct sqlite3_api_routines sqlite3_api_routines;
+
+/*
+** The following structure holds pointers to all of the SQLite API
+** routines.
+**
+** WARNING: In order to maintain backwards compatibility, add new
+** interfaces to the end of this structure only. If you insert new
+** interfaces in the middle of this structure, then older different
+** versions of SQLite will not be able to load each others' shared
+** libraries!
+*/
+struct sqlite3_api_routines {
+ void * (*aggregate_context)(sqlite3_context*,int nBytes);
+ int (*aggregate_count)(sqlite3_context*);
+ int (*bind_blob)(sqlite3_stmt*,int,const void*,int n,void(*)(void*));
+ int (*bind_double)(sqlite3_stmt*,int,double);
+ int (*bind_int)(sqlite3_stmt*,int,int);
+ int (*bind_int64)(sqlite3_stmt*,int,sqlite_int64);
+ int (*bind_null)(sqlite3_stmt*,int);
+ int (*bind_parameter_count)(sqlite3_stmt*);
+ int (*bind_parameter_index)(sqlite3_stmt*,const char*zName);
+ const char * (*bind_parameter_name)(sqlite3_stmt*,int);
+ int (*bind_text)(sqlite3_stmt*,int,const char*,int n,void(*)(void*));
+ int (*bind_text16)(sqlite3_stmt*,int,const void*,int,void(*)(void*));
+ int (*bind_value)(sqlite3_stmt*,int,const sqlite3_value*);
+ int (*busy_handler)(sqlite3*,int(*)(void*,int),void*);
+ int (*busy_timeout)(sqlite3*,int ms);
+ int (*changes)(sqlite3*);
+ int (*close)(sqlite3*);
+ int (*collation_needed)(sqlite3*,void*,void(*)(void*,sqlite3*,
+ int eTextRep,const char*));
+ int (*collation_needed16)(sqlite3*,void*,void(*)(void*,sqlite3*,
+ int eTextRep,const void*));
+ const void * (*column_blob)(sqlite3_stmt*,int iCol);
+ int (*column_bytes)(sqlite3_stmt*,int iCol);
+ int (*column_bytes16)(sqlite3_stmt*,int iCol);
+ int (*column_count)(sqlite3_stmt*pStmt);
+ const char * (*column_database_name)(sqlite3_stmt*,int);
+ const void * (*column_database_name16)(sqlite3_stmt*,int);
+ const char * (*column_decltype)(sqlite3_stmt*,int i);
+ const void * (*column_decltype16)(sqlite3_stmt*,int);
+ double (*column_double)(sqlite3_stmt*,int iCol);
+ int (*column_int)(sqlite3_stmt*,int iCol);
+ sqlite_int64 (*column_int64)(sqlite3_stmt*,int iCol);
+ const char * (*column_name)(sqlite3_stmt*,int);
+ const void * (*column_name16)(sqlite3_stmt*,int);
+ const char * (*column_origin_name)(sqlite3_stmt*,int);
+ const void * (*column_origin_name16)(sqlite3_stmt*,int);
+ const char * (*column_table_name)(sqlite3_stmt*,int);
+ const void * (*column_table_name16)(sqlite3_stmt*,int);
+ const unsigned char * (*column_text)(sqlite3_stmt*,int iCol);
+ const void * (*column_text16)(sqlite3_stmt*,int iCol);
+ int (*column_type)(sqlite3_stmt*,int iCol);
+ sqlite3_value* (*column_value)(sqlite3_stmt*,int iCol);
+ void * (*commit_hook)(sqlite3*,int(*)(void*),void*);
+ int (*complete)(const char*sql);
+ int (*complete16)(const void*sql);
+ int (*create_collation)(sqlite3*,const char*,int,void*,
+ int(*)(void*,int,const void*,int,const void*));
+ int (*create_collation16)(sqlite3*,const void*,int,void*,
+ int(*)(void*,int,const void*,int,const void*));
+ int (*create_function)(sqlite3*,const char*,int,int,void*,
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
+ void (*xFinal)(sqlite3_context*));
+ int (*create_function16)(sqlite3*,const void*,int,int,void*,
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
+ void (*xFinal)(sqlite3_context*));
+ int (*create_module)(sqlite3*,const char*,const sqlite3_module*,void*);
+ int (*data_count)(sqlite3_stmt*pStmt);
+ sqlite3 * (*db_handle)(sqlite3_stmt*);
+ int (*declare_vtab)(sqlite3*,const char*);
+ int (*enable_shared_cache)(int);
+ int (*errcode)(sqlite3*db);
+ const char * (*errmsg)(sqlite3*);
+ const void * (*errmsg16)(sqlite3*);
+ int (*exec)(sqlite3*,const char*,sqlite3_callback,void*,char**);
+ int (*expired)(sqlite3_stmt*);
+ int (*finalize)(sqlite3_stmt*pStmt);
+ void (*free)(void*);
+ void (*free_table)(char**result);
+ int (*get_autocommit)(sqlite3*);
+ void * (*get_auxdata)(sqlite3_context*,int);
+ int (*get_table)(sqlite3*,const char*,char***,int*,int*,char**);
+ int (*global_recover)(void);
+ void (*interruptx)(sqlite3*);
+ sqlite_int64 (*last_insert_rowid)(sqlite3*);
+ const char * (*libversion)(void);
+ int (*libversion_number)(void);
+ void *(*malloc)(int);
+ char * (*mprintf)(const char*,...);
+ int (*open)(const char*,sqlite3**);
+ int (*open16)(const void*,sqlite3**);
+ int (*prepare)(sqlite3*,const char*,int,sqlite3_stmt**,const char**);
+ int (*prepare16)(sqlite3*,const void*,int,sqlite3_stmt**,const void**);
+ void * (*profile)(sqlite3*,void(*)(void*,const char*,sqlite_uint64),void*);
+ void (*progress_handler)(sqlite3*,int,int(*)(void*),void*);
+ void *(*realloc)(void*,int);
+ int (*reset)(sqlite3_stmt*pStmt);
+ void (*result_blob)(sqlite3_context*,const void*,int,void(*)(void*));
+ void (*result_double)(sqlite3_context*,double);
+ void (*result_error)(sqlite3_context*,const char*,int);
+ void (*result_error16)(sqlite3_context*,const void*,int);
+ void (*result_int)(sqlite3_context*,int);
+ void (*result_int64)(sqlite3_context*,sqlite_int64);
+ void (*result_null)(sqlite3_context*);
+ void (*result_text)(sqlite3_context*,const char*,int,void(*)(void*));
+ void (*result_text16)(sqlite3_context*,const void*,int,void(*)(void*));
+ void (*result_text16be)(sqlite3_context*,const void*,int,void(*)(void*));
+ void (*result_text16le)(sqlite3_context*,const void*,int,void(*)(void*));
+ void (*result_value)(sqlite3_context*,sqlite3_value*);
+ void * (*rollback_hook)(sqlite3*,void(*)(void*),void*);
+ int (*set_authorizer)(sqlite3*,int(*)(void*,int,const char*,const char*,
+ const char*,const char*),void*);
+ void (*set_auxdata)(sqlite3_context*,int,void*,void (*)(void*));
+ char * (*snprintf)(int,char*,const char*,...);
+ int (*step)(sqlite3_stmt*);
+ int (*table_column_metadata)(sqlite3*,const char*,const char*,const char*,
+ char const**,char const**,int*,int*,int*);
+ void (*thread_cleanup)(void);
+ int (*total_changes)(sqlite3*);
+ void * (*trace)(sqlite3*,void(*xTrace)(void*,const char*),void*);
+ int (*transfer_bindings)(sqlite3_stmt*,sqlite3_stmt*);
+ void * (*update_hook)(sqlite3*,void(*)(void*,int ,char const*,char const*,
+ sqlite_int64),void*);
+ void * (*user_data)(sqlite3_context*);
+ const void * (*value_blob)(sqlite3_value*);
+ int (*value_bytes)(sqlite3_value*);
+ int (*value_bytes16)(sqlite3_value*);
+ double (*value_double)(sqlite3_value*);
+ int (*value_int)(sqlite3_value*);
+ sqlite_int64 (*value_int64)(sqlite3_value*);
+ int (*value_numeric_type)(sqlite3_value*);
+ const unsigned char * (*value_text)(sqlite3_value*);
+ const void * (*value_text16)(sqlite3_value*);
+ const void * (*value_text16be)(sqlite3_value*);
+ const void * (*value_text16le)(sqlite3_value*);
+ int (*value_type)(sqlite3_value*);
+ char *(*vmprintf)(const char*,va_list);
+ /* Added ??? */
+ int (*overload_function)(sqlite3*, const char *zFuncName, int nArg);
+ /* Added by 3.3.13 */
+ int (*prepare_v2)(sqlite3*,const char*,int,sqlite3_stmt**,const char**);
+ int (*prepare16_v2)(sqlite3*,const void*,int,sqlite3_stmt**,const void**);
+ int (*clear_bindings)(sqlite3_stmt*);
+ /* Added by 3.4.1 */
+ int (*create_module_v2)(sqlite3*,const char*,const sqlite3_module*,void*,
+ void (*xDestroy)(void *));
+ /* Added by 3.5.0 */
+ int (*bind_zeroblob)(sqlite3_stmt*,int,int);
+ int (*blob_bytes)(sqlite3_blob*);
+ int (*blob_close)(sqlite3_blob*);
+ int (*blob_open)(sqlite3*,const char*,const char*,const char*,sqlite3_int64,
+ int,sqlite3_blob**);
+ int (*blob_read)(sqlite3_blob*,void*,int,int);
+ int (*blob_write)(sqlite3_blob*,const void*,int,int);
+ int (*create_collation_v2)(sqlite3*,const char*,int,void*,
+ int(*)(void*,int,const void*,int,const void*),
+ void(*)(void*));
+ int (*file_control)(sqlite3*,const char*,int,void*);
+ sqlite3_int64 (*memory_highwater)(int);
+ sqlite3_int64 (*memory_used)(void);
+ sqlite3_mutex *(*mutex_alloc)(int);
+ void (*mutex_enter)(sqlite3_mutex*);
+ void (*mutex_free)(sqlite3_mutex*);
+ void (*mutex_leave)(sqlite3_mutex*);
+ int (*mutex_try)(sqlite3_mutex*);
+ int (*open_v2)(const char*,sqlite3**,int,const char*);
+ int (*release_memory)(int);
+ void (*result_error_nomem)(sqlite3_context*);
+ void (*result_error_toobig)(sqlite3_context*);
+ int (*sleep)(int);
+ void (*soft_heap_limit)(int);
+ sqlite3_vfs *(*vfs_find)(const char*);
+ int (*vfs_register)(sqlite3_vfs*,int);
+ int (*vfs_unregister)(sqlite3_vfs*);
+ int (*xthreadsafe)(void);
+ void (*result_zeroblob)(sqlite3_context*,int);
+ void (*result_error_code)(sqlite3_context*,int);
+ int (*test_control)(int, ...);
+ void (*randomness)(int,void*);
+ sqlite3 *(*context_db_handle)(sqlite3_context*);
+ int (*extended_result_codes)(sqlite3*,int);
+ int (*limit)(sqlite3*,int,int);
+ sqlite3_stmt *(*next_stmt)(sqlite3*,sqlite3_stmt*);
+ const char *(*sql)(sqlite3_stmt*);
+ int (*status)(int,int*,int*,int);
+ int (*backup_finish)(sqlite3_backup*);
+ sqlite3_backup *(*backup_init)(sqlite3*,const char*,sqlite3*,const char*);
+ int (*backup_pagecount)(sqlite3_backup*);
+ int (*backup_remaining)(sqlite3_backup*);
+ int (*backup_step)(sqlite3_backup*,int);
+ const char *(*compileoption_get)(int);
+ int (*compileoption_used)(const char*);
+ int (*create_function_v2)(sqlite3*,const char*,int,int,void*,
+ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
+ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
+ void (*xFinal)(sqlite3_context*),
+ void(*xDestroy)(void*));
+ int (*db_config)(sqlite3*,int,...);
+ sqlite3_mutex *(*db_mutex)(sqlite3*);
+ int (*db_status)(sqlite3*,int,int*,int*,int);
+ int (*extended_errcode)(sqlite3*);
+ void (*log)(int,const char*,...);
+ sqlite3_int64 (*soft_heap_limit64)(sqlite3_int64);
+ const char *(*sourceid)(void);
+ int (*stmt_status)(sqlite3_stmt*,int,int);
+ int (*strnicmp)(const char*,const char*,int);
+ int (*unlock_notify)(sqlite3*,void(*)(void**,int),void*);
+ int (*wal_autocheckpoint)(sqlite3*,int);
+ int (*wal_checkpoint)(sqlite3*,const char*);
+ void *(*wal_hook)(sqlite3*,int(*)(void*,sqlite3*,const char*,int),void*);
+ int (*blob_reopen)(sqlite3_blob*,sqlite3_int64);
+ int (*vtab_config)(sqlite3*,int op,...);
+ int (*vtab_on_conflict)(sqlite3*);
+};
+
+/*
+** The following macros redefine the API routines so that they are
+** redirected throught the global sqlite3_api structure.
+**
+** This header file is also used by the loadext.c source file
+** (part of the main SQLite library - not an extension) so that
+** it can get access to the sqlite3_api_routines structure
+** definition. But the main library does not want to redefine
+** the API. So the redefinition macros are only valid if the
+** SQLITE_CORE macros is undefined.
+*/
+#ifndef SQLITE_CORE
+#define sqlite3_aggregate_context sqlite3_api->aggregate_context
+#ifndef SQLITE_OMIT_DEPRECATED
+#define sqlite3_aggregate_count sqlite3_api->aggregate_count
+#endif
+#define sqlite3_bind_blob sqlite3_api->bind_blob
+#define sqlite3_bind_double sqlite3_api->bind_double
+#define sqlite3_bind_int sqlite3_api->bind_int
+#define sqlite3_bind_int64 sqlite3_api->bind_int64
+#define sqlite3_bind_null sqlite3_api->bind_null
+#define sqlite3_bind_parameter_count sqlite3_api->bind_parameter_count
+#define sqlite3_bind_parameter_index sqlite3_api->bind_parameter_index
+#define sqlite3_bind_parameter_name sqlite3_api->bind_parameter_name
+#define sqlite3_bind_text sqlite3_api->bind_text
+#define sqlite3_bind_text16 sqlite3_api->bind_text16
+#define sqlite3_bind_value sqlite3_api->bind_value
+#define sqlite3_busy_handler sqlite3_api->busy_handler
+#define sqlite3_busy_timeout sqlite3_api->busy_timeout
+#define sqlite3_changes sqlite3_api->changes
+#define sqlite3_close sqlite3_api->close
+#define sqlite3_collation_needed sqlite3_api->collation_needed
+#define sqlite3_collation_needed16 sqlite3_api->collation_needed16
+#define sqlite3_column_blob sqlite3_api->column_blob
+#define sqlite3_column_bytes sqlite3_api->column_bytes
+#define sqlite3_column_bytes16 sqlite3_api->column_bytes16
+#define sqlite3_column_count sqlite3_api->column_count
+#define sqlite3_column_database_name sqlite3_api->column_database_name
+#define sqlite3_column_database_name16 sqlite3_api->column_database_name16
+#define sqlite3_column_decltype sqlite3_api->column_decltype
+#define sqlite3_column_decltype16 sqlite3_api->column_decltype16
+#define sqlite3_column_double sqlite3_api->column_double
+#define sqlite3_column_int sqlite3_api->column_int
+#define sqlite3_column_int64 sqlite3_api->column_int64
+#define sqlite3_column_name sqlite3_api->column_name
+#define sqlite3_column_name16 sqlite3_api->column_name16
+#define sqlite3_column_origin_name sqlite3_api->column_origin_name
+#define sqlite3_column_origin_name16 sqlite3_api->column_origin_name16
+#define sqlite3_column_table_name sqlite3_api->column_table_name
+#define sqlite3_column_table_name16 sqlite3_api->column_table_name16
+#define sqlite3_column_text sqlite3_api->column_text
+#define sqlite3_column_text16 sqlite3_api->column_text16
+#define sqlite3_column_type sqlite3_api->column_type
+#define sqlite3_column_value sqlite3_api->column_value
+#define sqlite3_commit_hook sqlite3_api->commit_hook
+#define sqlite3_complete sqlite3_api->complete
+#define sqlite3_complete16 sqlite3_api->complete16
+#define sqlite3_create_collation sqlite3_api->create_collation
+#define sqlite3_create_collation16 sqlite3_api->create_collation16
+#define sqlite3_create_function sqlite3_api->create_function
+#define sqlite3_create_function16 sqlite3_api->create_function16
+#define sqlite3_create_module sqlite3_api->create_module
+#define sqlite3_create_module_v2 sqlite3_api->create_module_v2
+#define sqlite3_data_count sqlite3_api->data_count
+#define sqlite3_db_handle sqlite3_api->db_handle
+#define sqlite3_declare_vtab sqlite3_api->declare_vtab
+#define sqlite3_enable_shared_cache sqlite3_api->enable_shared_cache
+#define sqlite3_errcode sqlite3_api->errcode
+#define sqlite3_errmsg sqlite3_api->errmsg
+#define sqlite3_errmsg16 sqlite3_api->errmsg16
+#define sqlite3_exec sqlite3_api->exec
+#ifndef SQLITE_OMIT_DEPRECATED
+#define sqlite3_expired sqlite3_api->expired
+#endif
+#define sqlite3_finalize sqlite3_api->finalize
+#define sqlite3_free sqlite3_api->free
+#define sqlite3_free_table sqlite3_api->free_table
+#define sqlite3_get_autocommit sqlite3_api->get_autocommit
+#define sqlite3_get_auxdata sqlite3_api->get_auxdata
+#define sqlite3_get_table sqlite3_api->get_table
+#ifndef SQLITE_OMIT_DEPRECATED
+#define sqlite3_global_recover sqlite3_api->global_recover
+#endif
+#define sqlite3_interrupt sqlite3_api->interruptx
+#define sqlite3_last_insert_rowid sqlite3_api->last_insert_rowid
+#define sqlite3_libversion sqlite3_api->libversion
+#define sqlite3_libversion_number sqlite3_api->libversion_number
+#define sqlite3_malloc sqlite3_api->malloc
+#define sqlite3_mprintf sqlite3_api->mprintf
+#define sqlite3_open sqlite3_api->open
+#define sqlite3_open16 sqlite3_api->open16
+#define sqlite3_prepare sqlite3_api->prepare
+#define sqlite3_prepare16 sqlite3_api->prepare16
+#define sqlite3_prepare_v2 sqlite3_api->prepare_v2
+#define sqlite3_prepare16_v2 sqlite3_api->prepare16_v2
+#define sqlite3_profile sqlite3_api->profile
+#define sqlite3_progress_handler sqlite3_api->progress_handler
+#define sqlite3_realloc sqlite3_api->realloc
+#define sqlite3_reset sqlite3_api->reset
+#define sqlite3_result_blob sqlite3_api->result_blob
+#define sqlite3_result_double sqlite3_api->result_double
+#define sqlite3_result_error sqlite3_api->result_error
+#define sqlite3_result_error16 sqlite3_api->result_error16
+#define sqlite3_result_int sqlite3_api->result_int
+#define sqlite3_result_int64 sqlite3_api->result_int64
+#define sqlite3_result_null sqlite3_api->result_null
+#define sqlite3_result_text sqlite3_api->result_text
+#define sqlite3_result_text16 sqlite3_api->result_text16
+#define sqlite3_result_text16be sqlite3_api->result_text16be
+#define sqlite3_result_text16le sqlite3_api->result_text16le
+#define sqlite3_result_value sqlite3_api->result_value
+#define sqlite3_rollback_hook sqlite3_api->rollback_hook
+#define sqlite3_set_authorizer sqlite3_api->set_authorizer
+#define sqlite3_set_auxdata sqlite3_api->set_auxdata
+#define sqlite3_snprintf sqlite3_api->snprintf
+#define sqlite3_step sqlite3_api->step
+#define sqlite3_table_column_metadata sqlite3_api->table_column_metadata
+#define sqlite3_thread_cleanup sqlite3_api->thread_cleanup
+#define sqlite3_total_changes sqlite3_api->total_changes
+#define sqlite3_trace sqlite3_api->trace
+#ifndef SQLITE_OMIT_DEPRECATED
+#define sqlite3_transfer_bindings sqlite3_api->transfer_bindings
+#endif
+#define sqlite3_update_hook sqlite3_api->update_hook
+#define sqlite3_user_data sqlite3_api->user_data
+#define sqlite3_value_blob sqlite3_api->value_blob
+#define sqlite3_value_bytes sqlite3_api->value_bytes
+#define sqlite3_value_bytes16 sqlite3_api->value_bytes16
+#define sqlite3_value_double sqlite3_api->value_double
+#define sqlite3_value_int sqlite3_api->value_int
+#define sqlite3_value_int64 sqlite3_api->value_int64
+#define sqlite3_value_numeric_type sqlite3_api->value_numeric_type
+#define sqlite3_value_text sqlite3_api->value_text
+#define sqlite3_value_text16 sqlite3_api->value_text16
+#define sqlite3_value_text16be sqlite3_api->value_text16be
+#define sqlite3_value_text16le sqlite3_api->value_text16le
+#define sqlite3_value_type sqlite3_api->value_type
+#define sqlite3_vmprintf sqlite3_api->vmprintf
+#define sqlite3_overload_function sqlite3_api->overload_function
+#define sqlite3_prepare_v2 sqlite3_api->prepare_v2
+#define sqlite3_prepare16_v2 sqlite3_api->prepare16_v2
+#define sqlite3_clear_bindings sqlite3_api->clear_bindings
+#define sqlite3_bind_zeroblob sqlite3_api->bind_zeroblob
+#define sqlite3_blob_bytes sqlite3_api->blob_bytes
+#define sqlite3_blob_close sqlite3_api->blob_close
+#define sqlite3_blob_open sqlite3_api->blob_open
+#define sqlite3_blob_read sqlite3_api->blob_read
+#define sqlite3_blob_write sqlite3_api->blob_write
+#define sqlite3_create_collation_v2 sqlite3_api->create_collation_v2
+#define sqlite3_file_control sqlite3_api->file_control
+#define sqlite3_memory_highwater sqlite3_api->memory_highwater
+#define sqlite3_memory_used sqlite3_api->memory_used
+#define sqlite3_mutex_alloc sqlite3_api->mutex_alloc
+#define sqlite3_mutex_enter sqlite3_api->mutex_enter
+#define sqlite3_mutex_free sqlite3_api->mutex_free
+#define sqlite3_mutex_leave sqlite3_api->mutex_leave
+#define sqlite3_mutex_try sqlite3_api->mutex_try
+#define sqlite3_open_v2 sqlite3_api->open_v2
+#define sqlite3_release_memory sqlite3_api->release_memory
+#define sqlite3_result_error_nomem sqlite3_api->result_error_nomem
+#define sqlite3_result_error_toobig sqlite3_api->result_error_toobig
+#define sqlite3_sleep sqlite3_api->sleep
+#define sqlite3_soft_heap_limit sqlite3_api->soft_heap_limit
+#define sqlite3_vfs_find sqlite3_api->vfs_find
+#define sqlite3_vfs_register sqlite3_api->vfs_register
+#define sqlite3_vfs_unregister sqlite3_api->vfs_unregister
+#define sqlite3_threadsafe sqlite3_api->xthreadsafe
+#define sqlite3_result_zeroblob sqlite3_api->result_zeroblob
+#define sqlite3_result_error_code sqlite3_api->result_error_code
+#define sqlite3_test_control sqlite3_api->test_control
+#define sqlite3_randomness sqlite3_api->randomness
+#define sqlite3_context_db_handle sqlite3_api->context_db_handle
+#define sqlite3_extended_result_codes sqlite3_api->extended_result_codes
+#define sqlite3_limit sqlite3_api->limit
+#define sqlite3_next_stmt sqlite3_api->next_stmt
+#define sqlite3_sql sqlite3_api->sql
+#define sqlite3_status sqlite3_api->status
+#define sqlite3_backup_finish sqlite3_api->backup_finish
+#define sqlite3_backup_init sqlite3_api->backup_init
+#define sqlite3_backup_pagecount sqlite3_api->backup_pagecount
+#define sqlite3_backup_remaining sqlite3_api->backup_remaining
+#define sqlite3_backup_step sqlite3_api->backup_step
+#define sqlite3_compileoption_get sqlite3_api->compileoption_get
+#define sqlite3_compileoption_used sqlite3_api->compileoption_used
+#define sqlite3_create_function_v2 sqlite3_api->create_function_v2
+#define sqlite3_db_config sqlite3_api->db_config
+#define sqlite3_db_mutex sqlite3_api->db_mutex
+#define sqlite3_db_status sqlite3_api->db_status
+#define sqlite3_extended_errcode sqlite3_api->extended_errcode
+#define sqlite3_log sqlite3_api->log
+#define sqlite3_soft_heap_limit64 sqlite3_api->soft_heap_limit64
+#define sqlite3_sourceid sqlite3_api->sourceid
+#define sqlite3_stmt_status sqlite3_api->stmt_status
+#define sqlite3_strnicmp sqlite3_api->strnicmp
+#define sqlite3_unlock_notify sqlite3_api->unlock_notify
+#define sqlite3_wal_autocheckpoint sqlite3_api->wal_autocheckpoint
+#define sqlite3_wal_checkpoint sqlite3_api->wal_checkpoint
+#define sqlite3_wal_hook sqlite3_api->wal_hook
+#define sqlite3_blob_reopen sqlite3_api->blob_reopen
+#define sqlite3_vtab_config sqlite3_api->vtab_config
+#define sqlite3_vtab_on_conflict sqlite3_api->vtab_on_conflict
+#endif /* SQLITE_CORE */
+
+#define SQLITE_EXTENSION_INIT1 const sqlite3_api_routines *sqlite3_api = 0;
+#define SQLITE_EXTENSION_INIT2(v) sqlite3_api = v;
+
+#endif /* _SQLITE3EXT_H_ */
diff --git a/dist/version b/dist/version
index a03fb9f..09aafc5 100644
--- a/dist/version
+++ b/dist/version
@@ -1 +1 @@
-downloaded from http://www.sqlite.org/sqlite-amalgamation-3070400.zip
+downloaded from http://www.sqlite.org/sqlite-amalgamation-3071000.zip
