| /* |
| * Copyright (C) 2007 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <JNIHelp.h> |
| #include <jni.h> |
| #include <utils/misc.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <cutils/mspace.h> |
| #include <utils/Log.h> |
| |
| #include <sqlite3.h> |
| |
| // From mem_mspace.c in libsqlite |
| extern "C" mspace sqlite3_get_mspace(); |
| |
| namespace android { |
| |
| static jfieldID gMemoryUsedField; |
| static jfieldID gPageCacheOverfloField; |
| static jfieldID gLargestMemAllocField; |
| |
| |
| #define USE_MSPACE 0 |
| |
| static void getPagerStats(JNIEnv *env, jobject clazz, jobject statsObj) |
| { |
| int memoryUsed; |
| int pageCacheOverflo; |
| int largestMemAlloc; |
| int unused; |
| |
| sqlite3_status(SQLITE_STATUS_MEMORY_USED, &memoryUsed, &unused, 0); |
| sqlite3_status(SQLITE_STATUS_MALLOC_SIZE, &unused, &largestMemAlloc, 0); |
| sqlite3_status(SQLITE_STATUS_PAGECACHE_OVERFLOW, &pageCacheOverflo, &unused, 0); |
| env->SetIntField(statsObj, gMemoryUsedField, memoryUsed); |
| env->SetIntField(statsObj, gPageCacheOverfloField, pageCacheOverflo); |
| env->SetIntField(statsObj, gLargestMemAllocField, largestMemAlloc); |
| } |
| |
| static jlong getHeapSize(JNIEnv *env, jobject clazz) |
| { |
| #if !NO_MALLINFO |
| struct mallinfo info = mspace_mallinfo(sqlite3_get_mspace()); |
| struct mallinfo info = dlmallinfo(); |
| return (jlong) info.usmblks; |
| #elif USE_MSPACE |
| mspace space = sqlite3_get_mspace(); |
| if (space != 0) { |
| return mspace_footprint(space); |
| } else { |
| return 0; |
| } |
| #else |
| return 0; |
| #endif |
| } |
| |
| static jlong getHeapAllocatedSize(JNIEnv *env, jobject clazz) |
| { |
| #if !NO_MALLINFO |
| struct mallinfo info = mspace_mallinfo(sqlite3_get_mspace()); |
| return (jlong) info.uordblks; |
| #else |
| return sqlite3_memory_used(); |
| #endif |
| } |
| |
| static jlong getHeapFreeSize(JNIEnv *env, jobject clazz) |
| { |
| #if !NO_MALLINFO |
| struct mallinfo info = mspace_mallinfo(sqlite3_get_mspace()); |
| return (jlong) info.fordblks; |
| #else |
| return getHeapSize(env, clazz) - sqlite3_memory_used(); |
| #endif |
| } |
| |
| static int read_mapinfo(FILE *fp, |
| int *sharedPages, int *privatePages) |
| { |
| char line[1024]; |
| int len; |
| int skip; |
| |
| unsigned start = 0, size = 0, resident = 0; |
| unsigned shared_clean = 0, shared_dirty = 0; |
| unsigned private_clean = 0, private_dirty = 0; |
| unsigned referenced = 0; |
| |
| int isAnon = 0; |
| int isHeap = 0; |
| |
| again: |
| skip = 0; |
| |
| if(fgets(line, 1024, fp) == 0) return 0; |
| |
| len = strlen(line); |
| if (len < 1) return 0; |
| line[--len] = 0; |
| |
| /* ignore guard pages */ |
| if (line[18] == '-') skip = 1; |
| |
| start = strtoul(line, 0, 16); |
| |
| if (len > 50 && !strncmp(line + 49, "/tmp/sqlite-heap", strlen("/tmp/sqlite-heap"))) { |
| isHeap = 1; |
| } |
| |
| if (fgets(line, 1024, fp) == 0) return 0; |
| if (sscanf(line, "Size: %d kB", &size) != 1) return 0; |
| if (fgets(line, 1024, fp) == 0) return 0; |
| if (sscanf(line, "Rss: %d kB", &resident) != 1) return 0; |
| if (fgets(line, 1024, fp) == 0) return 0; |
| if (sscanf(line, "Shared_Clean: %d kB", &shared_clean) != 1) return 0; |
| if (fgets(line, 1024, fp) == 0) return 0; |
| if (sscanf(line, "Shared_Dirty: %d kB", &shared_dirty) != 1) return 0; |
| if (fgets(line, 1024, fp) == 0) return 0; |
| if (sscanf(line, "Private_Clean: %d kB", &private_clean) != 1) return 0; |
| if (fgets(line, 1024, fp) == 0) return 0; |
| if (sscanf(line, "Private_Dirty: %d kB", &private_dirty) != 1) return 0; |
| if (fgets(line, 1024, fp) == 0) return 0; |
| if (sscanf(line, "Referenced: %d kB", &referenced) != 1) return 0; |
| |
| if (skip) { |
| goto again; |
| } |
| |
| if (isHeap) { |
| *sharedPages += shared_dirty; |
| *privatePages += private_dirty; |
| } |
| return 1; |
| } |
| |
| static void load_maps(int pid, int *sharedPages, int *privatePages) |
| { |
| char tmp[128]; |
| FILE *fp; |
| |
| sprintf(tmp, "/proc/%d/smaps", pid); |
| fp = fopen(tmp, "r"); |
| if (fp == 0) return; |
| |
| while (read_mapinfo(fp, sharedPages, privatePages) != 0) { |
| // Do nothing |
| } |
| fclose(fp); |
| } |
| |
| static void getHeapDirtyPages(JNIEnv *env, jobject clazz, jintArray pages) |
| { |
| int _pages[2]; |
| |
| _pages[0] = 0; |
| _pages[1] = 0; |
| |
| load_maps(getpid(), &_pages[0], &_pages[1]); |
| |
| // Convert from kbytes to 4K pages |
| _pages[0] /= 4; |
| _pages[1] /= 4; |
| |
| env->SetIntArrayRegion(pages, 0, 2, _pages); |
| } |
| |
| /* |
| * JNI registration. |
| */ |
| |
| static JNINativeMethod gMethods[] = |
| { |
| { "getPagerStats", "(Landroid/database/sqlite/SQLiteDebug$PagerStats;)V", |
| (void*) getPagerStats }, |
| { "getHeapSize", "()J", (void*) getHeapSize }, |
| { "getHeapAllocatedSize", "()J", (void*) getHeapAllocatedSize }, |
| { "getHeapFreeSize", "()J", (void*) getHeapFreeSize }, |
| { "getHeapDirtyPages", "([I)V", (void*) getHeapDirtyPages }, |
| }; |
| |
| int register_android_database_SQLiteDebug(JNIEnv *env) |
| { |
| jclass clazz; |
| |
| clazz = env->FindClass("android/database/sqlite/SQLiteDebug$PagerStats"); |
| if (clazz == NULL) { |
| LOGE("Can't find android/database/sqlite/SQLiteDebug$PagerStats"); |
| return -1; |
| } |
| |
| gMemoryUsedField = env->GetFieldID(clazz, "memoryUsed", "I"); |
| if (gMemoryUsedField == NULL) { |
| LOGE("Can't find memoryUsed"); |
| return -1; |
| } |
| |
| gLargestMemAllocField = env->GetFieldID(clazz, "largestMemAlloc", "I"); |
| if (gLargestMemAllocField == NULL) { |
| LOGE("Can't find largestMemAlloc"); |
| return -1; |
| } |
| |
| gPageCacheOverfloField = env->GetFieldID(clazz, "pageCacheOverflo", "I"); |
| if (gPageCacheOverfloField == NULL) { |
| LOGE("Can't find pageCacheOverflo"); |
| return -1; |
| } |
| |
| return jniRegisterNativeMethods(env, "android/database/sqlite/SQLiteDebug", |
| gMethods, NELEM(gMethods)); |
| } |
| |
| } // namespace android |