| /* |
| * 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" |
| |
| #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 |
| #define WAIT_FOREVER ((jlong)(3600*1000)) |
| |
| static jvmtiEnv *jvmti = NULL; |
| static jvmtiCapabilities caps; |
| static jvmtiEventCallbacks callbacks; |
| static jrawMonitorID breakpointLock = NULL; |
| static jrawMonitorID popFrameLock = NULL; |
| static jrawMonitorID suspendLock = NULL; |
| static jint result = PASSED; |
| static jboolean printdump = JNI_FALSE; |
| static jboolean popDone = JNI_FALSE; |
| static jmethodID midCheckPoint = NULL; |
| static jmethodID midRun = NULL; |
| static int bpCount = 0; |
| static int framesCount = 0; |
| |
| void JNICALL Breakpoint(jvmtiEnv *jvmti_env, JNIEnv *env, |
| jthread thread, jmethodID method, jlocation location) { |
| jvmtiError err; |
| |
| if (midCheckPoint != method) { |
| printf("bp: don't know where we get called from"); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| err = (*jvmti_env)->RawMonitorEnter(jvmti_env, breakpointLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("step: Cannot enter breakpointLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| bpCount++; |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> breakpoint %d\n", bpCount); |
| } |
| |
| err = (*jvmti_env)->RawMonitorWait(jvmti_env, breakpointLock, WAIT_FOREVER); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("step: Cannot wait breakpointLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (bpCount == 2) { |
| err = (*jvmti_env)->ClearBreakpoint(jvmti_env, midCheckPoint, 0); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(ClearBreakpoint) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| err = (*jvmti_env)->RawMonitorExit(jvmti_env, breakpointLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("step: Cannot exit breakpointLock: %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; |
| framesCount++; |
| |
| if (method == midRun) { |
| popDone = JNI_TRUE; |
| if (printdump == JNI_TRUE) { |
| printf(">>> poped %d frames till \"run()\"\n", framesCount); |
| } |
| } |
| |
| err = (*jvmti_env)->RawMonitorEnter(jvmti_env, suspendLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("step: Cannot enter suspendLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti_env)->RawMonitorEnter(jvmti_env, popFrameLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("step: Cannot enter popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti_env)->RawMonitorNotify(jvmti_env, popFrameLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("step: Cannot notify popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti_env)->RawMonitorExit(jvmti_env, popFrameLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("step: Cannot exit popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti_env)->RawMonitorWait(jvmti_env, suspendLock, WAIT_FOREVER); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("step: Cannot wait suspendLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti_env)->RawMonitorExit(jvmti_env, suspendLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("step: Cannot exit suspendLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_popframe009(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_popframe009(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_popframe009(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_pop_frame) { |
| printf("Warning: PopFrame is not implemented\n"); |
| } |
| |
| if (!caps.can_suspend) { |
| printf("Warning: suspend/resume is not implemented\n"); |
| } |
| |
| if (caps.can_generate_breakpoint_events && |
| caps.can_generate_single_step_events) { |
| callbacks.Breakpoint = &Breakpoint; |
| callbacks.SingleStep = &SingleStep; |
| 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; |
| } |
| } else { |
| printf("Warning: Breakpoint or SingleStep event are not implemented\n"); |
| } |
| |
| return JNI_OK; |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_PopFrame_popframe009_getReady(JNIEnv *env, jclass cls) { |
| jvmtiError err; |
| |
| if (jvmti == NULL) { |
| printf("JVMTI client was not properly loaded!\n"); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| if (!caps.can_pop_frame || !caps.can_suspend || |
| !caps.can_generate_breakpoint_events || |
| !caps.can_generate_single_step_events) { |
| return; |
| } |
| |
| midCheckPoint = JNI_ENV_PTR(env)->GetStaticMethodID(JNI_ENV_ARG(env, cls), |
| "checkPoint", "()V"); |
| if (midCheckPoint == NULL) { |
| printf("Cannot find Method ID for method checkPoint\n"); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| err = (*jvmti)->CreateRawMonitor(jvmti, "Breakpoint Lock", &breakpointLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot create breakpointLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| err = (*jvmti)->SetBreakpoint(jvmti, midCheckPoint, 0); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(SetBreakpoint) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| 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; |
| } |
| } |
| |
| void popFrames(jthread thr) { |
| jvmtiError err; |
| |
| while (popDone != JNI_TRUE && result != STATUS_FAILED) { |
| err = (*jvmti)->PopFrame(jvmti, thr); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(PopFrame) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| break; |
| } |
| |
| err = (*jvmti)->ResumeThread(jvmti, thr); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(ResumeThread) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| break; |
| } |
| |
| err = (*jvmti)->RawMonitorWait(jvmti, popFrameLock, WAIT_FOREVER); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot wait popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorEnter(jvmti, suspendLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot enter suspendLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->SuspendThread(jvmti, thr); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(SuspendThread) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorNotify(jvmti, suspendLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot notify suspendLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorExit(jvmti, suspendLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot exit suspendLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_nsk_jvmti_PopFrame_popframe009_check(JNIEnv *env, jclass cls, jthread thr) { |
| jvmtiError err; |
| jmethodID midFibonacci; |
| jclass clazz; |
| jmethodID method = NULL; |
| jlocation loc; |
| char *name, *sig, *generic; |
| jlong delayTime = 1; |
| int popCount = 0; |
| int i; |
| |
| if (jvmti == NULL) { |
| printf("JVMTI client was not properly loaded!\n"); |
| return STATUS_FAILED; |
| } |
| |
| if (!caps.can_pop_frame || !caps.can_suspend || |
| !caps.can_generate_breakpoint_events || |
| !caps.can_generate_single_step_events) { |
| return result; |
| } |
| |
| err = (*jvmti)->CreateRawMonitor(jvmti, "Pop Frame Lock", &popFrameLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot create popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> waiting breakpoint 1\n"); |
| } |
| |
| while (bpCount < 1) { |
| err = (*jvmti)->RawMonitorEnter(jvmti, popFrameLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot enter popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorWait(jvmti, popFrameLock, (jlong)delayTime); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot wait popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorExit(jvmti, popFrameLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot exit popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| err = (*jvmti)->RawMonitorEnter(jvmti, breakpointLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot enter breakpointLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorNotify(jvmti, breakpointLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot notify breakpointLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->SuspendThread(jvmti, thr); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(SuspendThread) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorExit(jvmti, breakpointLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot exit breakpointLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| midFibonacci = JNI_ENV_PTR(env)->GetStaticMethodID(JNI_ENV_ARG(env, cls), |
| "fibonacci", "(I)I"); |
| if (midFibonacci == NULL) { |
| printf("Cannot get method ID for method \"fibonacci\"\n"); |
| result = STATUS_FAILED; |
| } |
| |
| clazz = JNI_ENV_PTR(env)->GetObjectClass(JNI_ENV_ARG(env, thr)); |
| if (clazz == NULL) { |
| printf("Cannot get class of thread object\n"); |
| return STATUS_FAILED; |
| } |
| |
| midRun = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, clazz), |
| "run", "()V"); |
| if (midRun == NULL) { |
| printf("Cannot get method ID for \"run\"\n"); |
| return STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorEnter(jvmti, popFrameLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot enter popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> catching method \"fibonacci\"\n"); |
| } |
| |
| for (i = 1; i < 10 && bpCount == 1; i++) { |
| err = (*jvmti)->GetFrameLocation(jvmti, thr, 0, &method, &loc); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetFrameLocation) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| break; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| (*jvmti)->GetMethodName(jvmti, method, &name, &sig, &generic); |
| printf(">>> %d: \"%s%s\"\n", i, name, sig); |
| } |
| |
| if (method == midFibonacci) break; |
| |
| err = (*jvmti)->ResumeThread(jvmti, thr); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(ResumeThread) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorWait(jvmti, popFrameLock, (jlong)delayTime); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot wait popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->SuspendThread(jvmti, thr); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(SuspendThread) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| err = (*jvmti)->RawMonitorExit(jvmti, popFrameLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot exit popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (method == midFibonacci) { |
| framesCount = 0; |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, |
| JVMTI_EVENT_SINGLE_STEP, thr); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot enable single step: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->CreateRawMonitor(jvmti, "Suspend Lock", &suspendLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot create suspendLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> popping frames\n"); |
| } |
| |
| err = (*jvmti)->RawMonitorEnter(jvmti, popFrameLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot enter popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| popFrames(thr); |
| |
| err = (*jvmti)->RawMonitorExit(jvmti, popFrameLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot exit popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_DISABLE, |
| JVMTI_EVENT_SINGLE_STEP, thr); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot disable single step: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } else { |
| printf("Warning: method \"fibonacci\" was missed\n"); |
| } |
| |
| err = (*jvmti)->ResumeThread(jvmti, thr); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(ResumeThread) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> waiting breakpoint 2\n"); |
| } |
| |
| while (bpCount < 2) { |
| err = (*jvmti)->RawMonitorEnter(jvmti, popFrameLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot enter popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorWait(jvmti, popFrameLock, (jlong)delayTime); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot wait popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorExit(jvmti, popFrameLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot exit popFrameLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| err = (*jvmti)->RawMonitorEnter(jvmti, breakpointLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot enter breakpointLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorNotify(jvmti, breakpointLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot notify breakpointLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorExit(jvmti, breakpointLock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Cannot exit breakpointLock: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| return result; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
