595 lines
18 KiB
C++
595 lines
18 KiB
C++
/*
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* Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "jvmti.h"
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#include "agent_common.h"
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#include "JVMTITools.h"
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extern "C" {
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#define PASSED 0
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#define STATUS_FAILED 2
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#define WAIT_FOREVER ((jlong)(3600*1000))
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static jvmtiEnv *jvmti = NULL;
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static jvmtiCapabilities caps;
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static jvmtiEventCallbacks callbacks;
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static jrawMonitorID breakpointLock = NULL;
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static jrawMonitorID popFrameLock = NULL;
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static jrawMonitorID suspendLock = NULL;
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static jint result = PASSED;
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static jboolean printdump = JNI_FALSE;
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static jboolean popDone = JNI_FALSE;
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static jmethodID midCheckPoint = NULL;
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static jmethodID midRun = NULL;
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static int bpCount = 0;
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static int framesCount = 0;
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void JNICALL Breakpoint(jvmtiEnv *jvmti_env, JNIEnv *env,
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jthread thread, jmethodID method, jlocation location) {
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jvmtiError err;
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if (midCheckPoint != method) {
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printf("bp: don't know where we get called from");
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result = STATUS_FAILED;
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return;
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}
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err = jvmti_env->RawMonitorEnter(breakpointLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("step: Cannot enter breakpointLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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bpCount++;
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if (printdump == JNI_TRUE) {
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printf(">>> breakpoint %d\n", bpCount);
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}
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err = jvmti_env->RawMonitorWait(breakpointLock, WAIT_FOREVER);
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if (err != JVMTI_ERROR_NONE) {
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printf("step: Cannot wait breakpointLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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if (bpCount == 2) {
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err = jvmti_env->ClearBreakpoint(midCheckPoint, 0);
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if (err != JVMTI_ERROR_NONE) {
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printf("(ClearBreakpoint) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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err = jvmti_env->RawMonitorExit(breakpointLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("step: Cannot exit breakpointLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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void JNICALL SingleStep(jvmtiEnv *jvmti_env, JNIEnv *env,
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jthread thread, jmethodID method, jlocation location) {
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jvmtiError err;
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framesCount++;
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if (method == midRun) {
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popDone = JNI_TRUE;
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if (printdump == JNI_TRUE) {
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printf(">>> poped %d frames till \"run()\"\n", framesCount);
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}
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}
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err = jvmti_env->RawMonitorEnter(suspendLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("step: Cannot enter suspendLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti_env->RawMonitorEnter(popFrameLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("step: Cannot enter popFrameLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti_env->RawMonitorNotify(popFrameLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("step: Cannot notify popFrameLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti_env->RawMonitorExit(popFrameLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("step: Cannot exit popFrameLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti_env->RawMonitorWait(suspendLock, WAIT_FOREVER);
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if (err != JVMTI_ERROR_NONE) {
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printf("step: Cannot wait suspendLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti_env->RawMonitorExit(suspendLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("step: Cannot exit suspendLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_popframe009(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNICALL Agent_OnAttach_popframe009(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNI_OnLoad_popframe009(JavaVM *jvm, char *options, void *reserved) {
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return JNI_VERSION_1_8;
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}
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#endif
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jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
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jvmtiError err;
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jint res;
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if (options != NULL && strcmp(options, "printdump") == 0) {
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printdump = JNI_TRUE;
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}
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res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);
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if (res != JNI_OK || jvmti == NULL) {
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printf("Wrong result of a valid call to GetEnv!\n");
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return JNI_ERR;
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}
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err = jvmti->GetPotentialCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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err = jvmti->AddCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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printf("(AddCapabilities) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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err = jvmti->GetCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetCapabilities) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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if (!caps.can_pop_frame) {
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printf("Warning: PopFrame is not implemented\n");
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}
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if (!caps.can_suspend) {
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printf("Warning: suspend/resume is not implemented\n");
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}
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if (caps.can_generate_breakpoint_events &&
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caps.can_generate_single_step_events) {
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callbacks.Breakpoint = &Breakpoint;
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callbacks.SingleStep = &SingleStep;
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err = jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks));
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetEventCallbacks) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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} else {
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printf("Warning: Breakpoint or SingleStep event are not implemented\n");
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}
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return JNI_OK;
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}
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JNIEXPORT void JNICALL
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Java_nsk_jvmti_PopFrame_popframe009_getReady(JNIEnv *env, jclass cls) {
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jvmtiError err;
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if (jvmti == NULL) {
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printf("JVMTI client was not properly loaded!\n");
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result = STATUS_FAILED;
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return;
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}
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if (!caps.can_pop_frame || !caps.can_suspend ||
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!caps.can_generate_breakpoint_events ||
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!caps.can_generate_single_step_events) {
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return;
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}
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midCheckPoint = env->GetStaticMethodID(cls, "checkPoint", "()V");
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if (midCheckPoint == NULL) {
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printf("Cannot find Method ID for method checkPoint\n");
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result = STATUS_FAILED;
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return;
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}
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err = jvmti->CreateRawMonitor("Breakpoint Lock", &breakpointLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot create breakpointLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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return;
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}
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err = jvmti->SetBreakpoint(midCheckPoint, 0);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetBreakpoint) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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return;
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}
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err = jvmti->SetEventNotificationMode(JVMTI_ENABLE,
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JVMTI_EVENT_BREAKPOINT, NULL);
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if (err != JVMTI_ERROR_NONE) {
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printf("Failed to enable BREAKPOINT event: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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void popFrames(jthread thr) {
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jvmtiError err;
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while (popDone != JNI_TRUE && result != STATUS_FAILED) {
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err = jvmti->PopFrame(thr);
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if (err != JVMTI_ERROR_NONE) {
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printf("(PopFrame) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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break;
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}
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err = jvmti->ResumeThread(thr);
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if (err != JVMTI_ERROR_NONE) {
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printf("(ResumeThread) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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break;
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}
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err = jvmti->RawMonitorWait(popFrameLock, WAIT_FOREVER);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot wait popFrameLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti->RawMonitorEnter(suspendLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot enter suspendLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti->SuspendThread(thr);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SuspendThread) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti->RawMonitorNotify(suspendLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot notify suspendLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti->RawMonitorExit(suspendLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot exit suspendLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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}
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JNIEXPORT jint JNICALL
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Java_nsk_jvmti_PopFrame_popframe009_check(JNIEnv *env, jclass cls, jthread thr) {
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jvmtiError err;
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jmethodID midFibonacci;
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jclass clazz;
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jmethodID method = NULL;
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jlocation loc;
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char *name, *sig, *generic;
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jlong delayTime = 1;
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int popCount = 0;
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int i;
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if (jvmti == NULL) {
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printf("JVMTI client was not properly loaded!\n");
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return STATUS_FAILED;
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}
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if (!caps.can_pop_frame || !caps.can_suspend ||
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!caps.can_generate_breakpoint_events ||
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!caps.can_generate_single_step_events) {
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return result;
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}
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err = jvmti->CreateRawMonitor("Pop Frame Lock", &popFrameLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot create popFrameLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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if (printdump == JNI_TRUE) {
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printf(">>> waiting breakpoint 1\n");
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}
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while (bpCount < 1) {
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err = jvmti->RawMonitorEnter(popFrameLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot enter popFrameLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti->RawMonitorWait(popFrameLock, (jlong)delayTime);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot wait popFrameLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti->RawMonitorExit(popFrameLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot exit popFrameLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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err = jvmti->RawMonitorEnter(breakpointLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot enter breakpointLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti->RawMonitorNotify(breakpointLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot notify breakpointLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti->SuspendThread(thr);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SuspendThread) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return STATUS_FAILED;
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}
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err = jvmti->RawMonitorExit(breakpointLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot exit breakpointLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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midFibonacci = env->GetStaticMethodID(cls, "fibonacci", "(I)I");
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if (midFibonacci == NULL) {
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printf("Cannot get method ID for method \"fibonacci\"\n");
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result = STATUS_FAILED;
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}
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clazz = env->GetObjectClass(thr);
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if (clazz == NULL) {
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printf("Cannot get class of thread object\n");
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return STATUS_FAILED;
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}
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midRun = env->GetMethodID(clazz, "run", "()V");
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if (midRun == NULL) {
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printf("Cannot get method ID for \"run\"\n");
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return STATUS_FAILED;
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}
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err = jvmti->RawMonitorEnter(popFrameLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot enter popFrameLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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if (printdump == JNI_TRUE) {
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printf(">>> catching method \"fibonacci\"\n");
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}
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for (i = 1; i < 10 && bpCount == 1; i++) {
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err = jvmti->GetFrameLocation(thr, 0, &method, &loc);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetFrameLocation) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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break;
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}
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if (printdump == JNI_TRUE) {
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jvmti->GetMethodName(method, &name, &sig, &generic);
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printf(">>> %d: \"%s%s\"\n", i, name, sig);
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}
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if (method == midFibonacci) break;
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err = jvmti->ResumeThread(thr);
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if (err != JVMTI_ERROR_NONE) {
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printf("(ResumeThread) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti->RawMonitorWait(popFrameLock, (jlong)delayTime);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot wait popFrameLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti->SuspendThread(thr);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SuspendThread) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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err = jvmti->RawMonitorExit(popFrameLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot exit popFrameLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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if (method == midFibonacci) {
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framesCount = 0;
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err = jvmti->SetEventNotificationMode(JVMTI_ENABLE,
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JVMTI_EVENT_SINGLE_STEP, thr);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot enable single step: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti->CreateRawMonitor("Suspend Lock", &suspendLock);
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if (err != JVMTI_ERROR_NONE) {
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printf("Cannot create suspendLock: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
|
|
}
|
|
|
|
if (printdump == JNI_TRUE) {
|
|
printf(">>> popping frames\n");
|
|
}
|
|
|
|
err = jvmti->RawMonitorEnter(popFrameLock);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("Cannot enter popFrameLock: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
result = STATUS_FAILED;
|
|
}
|
|
|
|
popFrames(thr);
|
|
|
|
err = jvmti->RawMonitorExit(popFrameLock);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("Cannot exit popFrameLock: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
result = STATUS_FAILED;
|
|
}
|
|
|
|
err = jvmti->SetEventNotificationMode(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(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(popFrameLock);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("Cannot enter popFrameLock: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
result = STATUS_FAILED;
|
|
}
|
|
|
|
err = jvmti->RawMonitorWait(popFrameLock, (jlong)delayTime);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("Cannot wait popFrameLock: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
result = STATUS_FAILED;
|
|
}
|
|
|
|
err = jvmti->RawMonitorExit(popFrameLock);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("Cannot exit popFrameLock: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
result = STATUS_FAILED;
|
|
}
|
|
}
|
|
|
|
err = jvmti->RawMonitorEnter(breakpointLock);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("Cannot enter breakpointLock: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
result = STATUS_FAILED;
|
|
}
|
|
|
|
err = jvmti->RawMonitorNotify(breakpointLock);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("Cannot notify breakpointLock: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
result = STATUS_FAILED;
|
|
}
|
|
|
|
err = jvmti->RawMonitorExit(breakpointLock);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("Cannot exit breakpointLock: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
result = STATUS_FAILED;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
}
|