| /* |
| * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include "jvmti.h" |
| #include "agent_common.h" |
| #include "JVMTITools.h" |
| #include "jni_tools.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifndef JNI_ENV_ARG |
| |
| #ifdef __cplusplus |
| #define JNI_ENV_ARG(x, y) y |
| #define JNI_ENV_PTR(x) x |
| #else |
| #define JNI_ENV_ARG(x,y) x, y |
| #define JNI_ENV_PTR(x) (*x) |
| #endif |
| |
| #endif |
| |
| #define PASSED 0 |
| #define STATUS_FAILED 2 |
| |
| typedef struct { |
| const char *name; |
| const char *sig; |
| jint value; |
| } var_info; |
| |
| typedef struct { |
| jboolean isObsolete; |
| const char *name; |
| const char *sig; |
| jint line; |
| jint count; |
| var_info *vars; |
| const char *desc; |
| } frame_info; |
| |
| static jvmtiEnv *jvmti = NULL; |
| static jvmtiCapabilities caps; |
| static jvmtiEventCallbacks callbacks; |
| static jint result = PASSED; |
| static jboolean printdump = JNI_FALSE; |
| static jbyteArray classBytes; |
| static jmethodID midRun = NULL; |
| static jmethodID mid1 = NULL; |
| static jmethodID mid2 = NULL; |
| static jfieldID fid1 = NULL; |
| static jfieldID fid2 = NULL; |
| static jint stepEventsExpected = 0; |
| static jint bpEventsExpected = 0; |
| static jint popEventsExpected = 0; |
| static jint accessEventsExpected = 0; |
| static jint modificationEventsExpected = 0; |
| static jint exceptionEventsExpected = 0; |
| static jint catchEventsExpected = 0; |
| static jint stepEventsCount = 0; |
| static jint bpEventsCount = 0; |
| static jint popEventsCount = 0; |
| static jint accessEventsCount = 0; |
| static jint modificationEventsCount = 0; |
| static jint exceptionEventsCount = 0; |
| static jint catchEventsCount = 0; |
| static jint redefinesCount = 0; |
| |
| static const char *cls_exp = "Lnsk/jvmti/RedefineClasses/redefclass027a;"; |
| |
| static var_info run[] = { |
| {"this", "Lnsk/jvmti/RedefineClasses/redefclass027a;", 0}, |
| {"localInt1", "I", 1} |
| }; |
| |
| static var_info method1[] = { |
| {"this", "Lnsk/jvmti/RedefineClasses/redefclass027a;", 0}, |
| {"argInt1", "I", 10}, |
| {"localInt2", "I", 2}, |
| {"ex", "Ljava/lang/Exception;", 0} |
| }; |
| |
| static var_info pop[] = { |
| {"this", "Lnsk/jvmti/RedefineClasses/redefclass027a;", 0}, |
| {"argInt1", "I", 10}, |
| {"localInt2", "I", 2}, |
| {"ex", "Ljava/lang/Exception;", 0} |
| }; |
| |
| static var_info method2[] = { |
| {"this", "Lnsk/jvmti/RedefineClasses/redefclass027a;", 0}, |
| {"argInt2", "I", 20}, |
| {"localInt4", "I", 4} |
| }; |
| |
| static frame_info frames[] = { |
| {JNI_FALSE, "run", "()V", 97, 2, run, "bp"}, |
| {JNI_FALSE, "run", "()V", 97, 2, run, "step"}, |
| {JNI_FALSE, "run", "()V", 99, 2, run, "mod"}, |
| {JNI_FALSE, "method2", "(I)V", 116, 3, method2, "acc"}, |
| {JNI_FALSE, "method2", "(I)V", 117, 3, method2, "exc"}, |
| {JNI_FALSE, "method1", "(I)V", 108, 4, method1, "catch"}, |
| {JNI_FALSE, "method1", "(I)V", 112, 4, pop, "pop"}, |
| }; |
| |
| |
| void check(jvmtiEnv *jvmti_env, jthread thr, jclass cls, jmethodID mid, |
| jlocation loc, jint i) { |
| jvmtiError err; |
| char *sigClass, *name = NULL, *sig = NULL, *generic; |
| const char *desc; |
| jboolean is_obsolete; |
| jvmtiLineNumberEntry *lines = NULL; |
| jvmtiLocalVariableEntry *table = NULL; |
| jint line = -1; |
| jint entryCount = 0; |
| jint varValue = -1; |
| jint j, k; |
| char buffer[32]; |
| |
| if (i >= (jint) (sizeof(frames)/sizeof(frame_info))) { |
| printf("%d -- too many frames\n", i); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| desc = frames[i].desc; |
| |
| err = (*jvmti_env)->GetClassSignature(jvmti_env, cls, &sigClass, &generic); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetClassSignature#%s) unexpected error: %s (%d)\n", |
| desc, TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (sigClass == NULL || strcmp(sigClass, cls_exp) != 0) { |
| printf("(%s) wrong class sig: \"%s\",", desc, sigClass); |
| printf(" expected: \"%s\"\n", cls_exp); |
| if (sigClass != NULL) { |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char *)sigClass); |
| } |
| result = STATUS_FAILED; |
| } else { |
| err = (*jvmti_env)->GetMethodName(jvmti_env, mid, &name, &sig, &generic); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodName#%s) unexpected error: %s (%d)\n", |
| desc, TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti_env)->IsMethodObsolete(jvmti_env, mid, &is_obsolete); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(IsMethodObsolete#%s) unexpected error: %s (%d)\n", |
| desc, TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> %s: \"%s.%s%s\"%s", desc, sigClass, name, sig, |
| (is_obsolete == JNI_TRUE) ? " (obsolete)" : ""); |
| printf(", location=%s\n", jlong_to_string(loc, buffer)); |
| } |
| if (frames[i].isObsolete != is_obsolete) { |
| printf("(%s) %s obsolete method\n", desc, |
| (is_obsolete == JNI_TRUE) ? "unexpected" : "should be"); |
| result = STATUS_FAILED; |
| } |
| if (name == NULL || strcmp(name, frames[i].name) != 0) { |
| printf("(%s) wrong method name: \"%s\",", desc, name); |
| printf(" expected: \"%s\"\n", frames[i].name); |
| result = STATUS_FAILED; |
| } |
| if (sig == NULL || strcmp(sig, frames[i].sig) != 0) { |
| printf("(%s) wrong method sig: \"%s\",", desc, sig); |
| printf(" expected: \"%s\"\n", frames[i].sig); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti_env)->GetLineNumberTable(jvmti_env, mid, |
| &entryCount, &lines); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLineNumberTable#%s) unexpected error: %s (%d)\n", |
| desc, TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (lines != NULL && entryCount > 0) { |
| for (k = 0; k < entryCount; k++) { |
| if (loc < lines[k].start_location) { |
| break; |
| } |
| } |
| line = lines[k-1].line_number; |
| } |
| if (line != frames[i].line) { |
| printf("(%s) wrong line number: %d, expected: %d\n", |
| desc, line, frames[i].line); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti_env)->GetLocalVariableTable(jvmti_env, mid, |
| &entryCount, &table); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalVariableTable#%s) unexpected error: %s (%d)\n", |
| desc, TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (frames[i].count != entryCount) { |
| printf("(%s) wrong number of locals: %d, expected: %d\n", |
| desc, entryCount, frames[i].count); |
| result = STATUS_FAILED; |
| } |
| |
| if (table != NULL) { |
| for (k = 0; k < frames[i].count; k++) { |
| for (j = 0; j < entryCount; j++) { |
| if (strcmp(table[j].name, frames[i].vars[k].name) == 0 && |
| strcmp(table[j].signature, frames[i].vars[k].sig) == 0) { |
| if (printdump == JNI_TRUE) { |
| printf(">>> var \"%s:%s\": ", |
| table[j].name, table[j].signature); |
| printf("start_location=%s, length=%d", |
| jlong_to_string(table[j].start_location, buffer), |
| table[j].length); |
| } |
| if (table[j].signature[0] == 'I' && |
| loc >= table[j].start_location && |
| loc <= (table[j].start_location + table[j].length)) { |
| err = (*jvmti_env)->GetLocalInt(jvmti_env, thr, |
| 0, table[j].slot, &varValue); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetLocalInt#%s) unexpected error: %s (%d)\n", |
| desc, TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| else { |
| if (printdump == JNI_TRUE) { |
| printf(", tvalue=%d\n", varValue); |
| } |
| if (varValue != frames[i].vars[k].value) { |
| printf("(%s) wrong local var \"%s:%s\" value: %d,", |
| desc, table[j].name, table[j].signature, |
| varValue); |
| printf(" expected: %d\n", frames[i].vars[k].value); |
| result = STATUS_FAILED; |
| } |
| } |
| } else if (printdump == JNI_TRUE) { |
| printf("\n"); |
| } |
| break; |
| } |
| } |
| if (j == entryCount) { |
| printf("(%s) var \"%s %s\" not found\n", |
| desc, frames[i].vars[k].name, frames[i].vars[k].sig); |
| result = STATUS_FAILED; |
| } |
| } |
| } |
| } |
| |
| if (sigClass != NULL) { |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char *)sigClass); |
| } |
| if (name != NULL) { |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char *)name); |
| } |
| if (sig != NULL) { |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char *)sig); |
| } |
| if (lines != NULL) { |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char *)lines); |
| } |
| if (table != NULL) { |
| for (j = 0; j < entryCount; j++) { |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char *)(table[j].name)); |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char *)(table[j].signature)); |
| } |
| (*jvmti_env)->Deallocate(jvmti_env, (unsigned char *)table); |
| } |
| } |
| |
| void redefine(jvmtiEnv *jvmti_env, JNIEnv *env, jclass cls) { |
| jvmtiClassDefinition classDef; |
| jvmtiError err; |
| |
| classDef.klass = cls; |
| classDef.class_byte_count = |
| JNI_ENV_PTR(env)->GetArrayLength(JNI_ENV_ARG(env, classBytes)); |
| classDef.class_bytes = (unsigned char *) |
| JNI_ENV_PTR(env)->GetByteArrayElements(JNI_ENV_ARG(env, classBytes), NULL); |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> about to call RedefineClasses %d\n", redefinesCount); |
| } |
| |
| err = (*jvmti_env)->RedefineClasses(jvmti_env, 1, &classDef); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RedefineClasses#%d) unexpected error: %s (%d)\n", |
| redefinesCount, TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| redefinesCount++; |
| } |
| |
| void JNICALL Breakpoint(jvmtiEnv *jvmti_env, JNIEnv *env, |
| jthread thread, jmethodID method, jlocation location) { |
| jvmtiError err; |
| jclass klass; |
| |
| if (midRun != method) { |
| printf("bp: don't know where we get called from\n"); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> breakpoint in \"run\"\n"); |
| } |
| |
| err = (*jvmti_env)->GetMethodDeclaringClass(jvmti_env, method, &klass); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodDeclaringClass) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| check(jvmti_env, thread, klass, method, location, 0); |
| bpEventsCount++; |
| |
| err = (*jvmti_env)->ClearBreakpoint(jvmti_env, midRun, 0); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(ClearBreakpoint) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| redefine(jvmti_env, (JNIEnv *)env, klass); |
| |
| err = (*jvmti_env)->SetEventNotificationMode(jvmti_env, JVMTI_ENABLE, |
| JVMTI_EVENT_SINGLE_STEP, thread); |
| if (err == JVMTI_ERROR_NONE) { |
| stepEventsExpected++; |
| } else { |
| printf("Cannot enable single step: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| void JNICALL SingleStep(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread, |
| jmethodID method, jlocation location) { |
| jvmtiError err; |
| jclass klass; |
| |
| if (midRun != method) { |
| printf("step: don't know where we get called from\n"); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> single step in \"run\"\n"); |
| } |
| |
| err = (*jvmti_env)->GetMethodDeclaringClass(jvmti_env, method, &klass); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodDeclaringClass) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| check(jvmti_env, thread, klass, method, location, 1); |
| stepEventsCount++; |
| |
| err = (*jvmti_env)->SetEventNotificationMode(jvmti_env, JVMTI_DISABLE, |
| JVMTI_EVENT_SINGLE_STEP, thread); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot disable single step: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| redefine(jvmti_env, (JNIEnv *)env, klass); |
| |
| if (caps.can_generate_exception_events) { |
| err = (*jvmti_env)->SetEventNotificationMode(jvmti_env, JVMTI_ENABLE, |
| JVMTI_EVENT_EXCEPTION, thread); |
| if (err == JVMTI_ERROR_NONE) { |
| exceptionEventsExpected++; |
| } else { |
| printf("Cannot enable exception: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| } |
| |
| void JNICALL FieldModification(jvmtiEnv *jvmti_env, JNIEnv *env, |
| jthread thread, jmethodID method, jlocation location, |
| jclass field_klass, jobject obj, jfieldID field, char sig, jvalue new_value) { |
| jvmtiError err; |
| jclass klass; |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> field modification\n"); |
| } |
| |
| err = (*jvmti_env)->GetMethodDeclaringClass(jvmti_env, method, &klass); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodDeclaringClass) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| check(jvmti_env, thread, klass, method, location, 2); |
| modificationEventsCount++; |
| |
| redefine(jvmti_env, (JNIEnv *)env, klass); |
| } |
| |
| void JNICALL FieldAccess(jvmtiEnv *jvmti_env, JNIEnv *env, |
| jthread thread, jmethodID method, jlocation location, |
| jclass field_klass, jobject obj, jfieldID field) { |
| jvmtiError err; |
| jclass klass; |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> field access\n"); |
| } |
| |
| err = (*jvmti_env)->GetMethodDeclaringClass(jvmti_env, method, &klass); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodDeclaringClass) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| check(jvmti_env, thread, klass, method, location, 3); |
| accessEventsCount++; |
| |
| redefine(jvmti_env, (JNIEnv *)env, klass); |
| } |
| |
| void JNICALL Exception(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread, |
| jmethodID method, jlocation location, jobject exception, |
| jmethodID catch_method, jlocation catch_location) { |
| jvmtiError err; |
| jclass klass; |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> exception\n"); |
| } |
| |
| err = (*jvmti_env)->GetMethodDeclaringClass(jvmti_env, method, &klass); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodDeclaringClass) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| check(jvmti_env, thread, klass, method, location, 4); |
| exceptionEventsCount++; |
| |
| err = (*jvmti_env)->SetEventNotificationMode(jvmti_env, JVMTI_DISABLE, |
| JVMTI_EVENT_EXCEPTION, thread); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot disable exception: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| redefine(jvmti_env, (JNIEnv *)env, klass); |
| |
| err = (*jvmti_env)->SetEventNotificationMode(jvmti_env, JVMTI_ENABLE, |
| JVMTI_EVENT_EXCEPTION_CATCH, thread); |
| if (err == JVMTI_ERROR_NONE) { |
| catchEventsExpected++; |
| } else { |
| printf("Cannot enable exception catch: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| void JNICALL ExceptionCatch(jvmtiEnv *jvmti_env, JNIEnv *env, |
| jthread thread, jmethodID method, jlocation location, jobject exception) { |
| jvmtiError err; |
| jclass klass; |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> catch\n"); |
| } |
| |
| err = (*jvmti_env)->GetMethodDeclaringClass(jvmti_env, method, &klass); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodDeclaringClass) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| check(jvmti_env, thread, klass, method, location, 5); |
| catchEventsCount++; |
| |
| redefine(jvmti_env, (JNIEnv *)env, klass); |
| |
| err = (*jvmti_env)->SetEventNotificationMode(jvmti_env, JVMTI_DISABLE, |
| JVMTI_EVENT_EXCEPTION_CATCH, thread); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot disable exception catch: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (caps.can_generate_frame_pop_events) { |
| err = (*jvmti_env)->SetEventNotificationMode(jvmti_env, JVMTI_ENABLE, |
| JVMTI_EVENT_FRAME_POP, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to enable FRAME_POP event: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } else { |
| err = (*jvmti_env)->NotifyFramePop(jvmti_env, thread, 0); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(NotifyFramePop) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } else { |
| popEventsExpected++; |
| } |
| } |
| } |
| } |
| |
| void JNICALL FramePop(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread, |
| jmethodID method, jboolean wasPopedByException) { |
| jvmtiError err; |
| jclass klass; |
| jmethodID mid; |
| jlocation loc; |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> frame pop\n"); |
| } |
| |
| err = (*jvmti_env)->GetFrameLocation(jvmti_env, thread, 0, &mid, &loc); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetFrameLocation#pop) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti_env)->GetMethodDeclaringClass(jvmti_env, method, &klass); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodDeclaringClass) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| check(jvmti_env, thread, klass, method, loc, 6); |
| popEventsCount++; |
| |
| redefine(jvmti_env, (JNIEnv *)env, klass); |
| } |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_redefclass027(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_redefclass027(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_redefclass027(JavaVM *jvm, char *options, void *reserved) { |
| return JNI_VERSION_1_8; |
| } |
| #endif |
| jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { |
| jvmtiError err; |
| jint res; |
| |
| if (options != NULL && strcmp(options, "printdump") == 0) { |
| printdump = JNI_TRUE; |
| } |
| |
| res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti), |
| JVMTI_VERSION_1_1); |
| if (res != JNI_OK || jvmti == NULL) { |
| printf("Wrong result of a valid call to GetEnv!\n"); |
| return JNI_ERR; |
| } |
| |
| err = (*jvmti)->GetPotentialCapabilities(jvmti, &caps); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| err = (*jvmti)->AddCapabilities(jvmti, &caps); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(AddCapabilities) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| err = (*jvmti)->GetCapabilities(jvmti, &caps); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetCapabilities) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| if (!caps.can_redefine_classes) { |
| printf("Warning: RedefineClasses is not implemented\n"); |
| } |
| |
| if (!caps.can_get_line_numbers) { |
| printf("Warning: GetLineNumberTable is not implemented\n"); |
| } |
| |
| if (!caps.can_access_local_variables) { |
| printf("Warning: access to local variables is not implemented\n"); |
| } |
| |
| if (caps.can_redefine_classes) { |
| if (caps.can_generate_breakpoint_events) { |
| callbacks.Breakpoint = &Breakpoint; |
| } else { |
| printf("Warning: Breakpoint event is not implemented\n"); |
| } |
| if (caps.can_generate_single_step_events) { |
| callbacks.SingleStep = &SingleStep; |
| } else { |
| printf("Warning: SingleStep event is not implemented\n"); |
| } |
| if (caps.can_generate_exception_events) { |
| callbacks.Exception = &Exception; |
| callbacks.ExceptionCatch = &ExceptionCatch; |
| } else { |
| printf("Warning: exception events are not implemented\n"); |
| } |
| if (caps.can_generate_frame_pop_events) { |
| callbacks.FramePop = &FramePop; |
| } else { |
| printf("Warning: FramePop event is not implemented\n"); |
| } |
| if (caps.can_generate_field_access_events) { |
| callbacks.FieldAccess = &FieldAccess; |
| } else { |
| printf("Warning: FieldAccess event is not implemented\n"); |
| } |
| if (caps.can_generate_field_modification_events) { |
| callbacks.FieldModification = &FieldModification; |
| } else { |
| printf("Warning: FieldModification event is not implemented\n"); |
| } |
| err = (*jvmti)->SetEventCallbacks(jvmti, &callbacks, sizeof(callbacks)); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(SetEventCallbacks) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| } |
| |
| return JNI_OK; |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_RedefineClasses_redefclass027_getReady(JNIEnv *env, jclass cls, |
| jclass clazz, jbyteArray bytes) { |
| jvmtiError err; |
| |
| if (jvmti == NULL) { |
| printf("JVMTI client was not properly loaded!\n"); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| if (!caps.can_redefine_classes || |
| !caps.can_get_line_numbers || |
| !caps.can_access_local_variables) return; |
| |
| classBytes = JNI_ENV_PTR(env)->NewGlobalRef(JNI_ENV_ARG(env, bytes)); |
| |
| midRun = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, clazz), |
| "run", "()V"); |
| if (midRun == NULL) { |
| printf("Cannot find Method ID for method run\n"); |
| result = STATUS_FAILED; |
| } |
| |
| mid1 = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, clazz), |
| "method1", "(I)V"); |
| if (mid1 == NULL) { |
| printf("Cannot find Method ID for method1\n"); |
| result = STATUS_FAILED; |
| } |
| |
| mid2 = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, clazz), |
| "method2", "(I)V"); |
| if (mid2 == NULL) { |
| printf("Cannot find Method ID for method2\n"); |
| result = STATUS_FAILED; |
| } |
| |
| if (caps.can_generate_breakpoint_events && midRun != NULL) { |
| err = (*jvmti)->SetBreakpoint(jvmti, midRun, 0); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(SetBreakpoint) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } else { |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, |
| JVMTI_EVENT_BREAKPOINT, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to enable BREAKPOINT event: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } else { |
| bpEventsExpected++; |
| } |
| } |
| } |
| |
| fid1 = JNI_ENV_PTR(env)->GetStaticFieldID(JNI_ENV_ARG(env, clazz), |
| "staticInt", "I"); |
| if (fid1 == NULL) { |
| printf("Cannot find Field ID for staticInt\n"); |
| result = STATUS_FAILED; |
| } |
| |
| if (caps.can_generate_field_modification_events && fid1 != NULL) { |
| err = (*jvmti)->SetFieldModificationWatch(jvmti, clazz, fid1); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(SetFieldModificationWatch) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } else { |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, |
| JVMTI_EVENT_FIELD_MODIFICATION, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to enable FIELD_MODIFICATION event: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } else { |
| modificationEventsExpected++; |
| } |
| } |
| } |
| |
| fid2 = JNI_ENV_PTR(env)->GetFieldID(JNI_ENV_ARG(env, clazz), |
| "instanceInt", "I"); |
| if (fid2 == NULL) { |
| printf("Cannot find Field ID for instanceInt\n"); |
| result = STATUS_FAILED; |
| } |
| |
| if (caps.can_generate_field_access_events && fid2 != NULL) { |
| err = (*jvmti)->SetFieldAccessWatch(jvmti, clazz, fid2); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(SetFieldAccessWatch) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } else { |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, |
| JVMTI_EVENT_FIELD_ACCESS, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to enable FIELD_ACCESS event: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } else { |
| accessEventsExpected++; |
| } |
| } |
| } |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_nsk_jvmti_RedefineClasses_redefclass027_check(JNIEnv *env, jclass cls) { |
| if (bpEventsCount != bpEventsExpected) { |
| printf("Wrong number of breakpoint events: %d, expected: %d\n", |
| bpEventsCount, bpEventsExpected); |
| result = STATUS_FAILED; |
| } |
| if (stepEventsCount != stepEventsExpected) { |
| printf("Wrong number of step events: %d, expected: %d\n", |
| stepEventsCount, stepEventsExpected); |
| result = STATUS_FAILED; |
| } |
| if (modificationEventsCount != modificationEventsExpected) { |
| printf("Wrong number of modification watch events: %d, expected: %d\n", |
| modificationEventsCount, modificationEventsExpected); |
| result = STATUS_FAILED; |
| } |
| if (accessEventsCount != accessEventsExpected) { |
| printf("Wrong number of access watch events: %d, expected: %d\n", |
| accessEventsCount, accessEventsExpected); |
| result = STATUS_FAILED; |
| } |
| if (exceptionEventsCount != exceptionEventsExpected) { |
| printf("Wrong number of exception events: %d, expected: %d\n", |
| exceptionEventsCount, exceptionEventsExpected); |
| result = STATUS_FAILED; |
| } |
| if (catchEventsCount != catchEventsExpected) { |
| printf("Wrong number of catch exception events: %d, expected: %d\n", |
| catchEventsCount, catchEventsExpected); |
| result = STATUS_FAILED; |
| } |
| if (popEventsCount != popEventsExpected) { |
| printf("Wrong number of frame pop events: %d, expected: %d\n", |
| popEventsCount, popEventsExpected); |
| result = STATUS_FAILED; |
| } |
| return result; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
