335 lines
10 KiB
C++
335 lines
10 KiB
C++
/*
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* Copyright (c) 2003, 2020, 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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static jvmtiEnv *jvmti = NULL;
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static jvmtiCapabilities caps;
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static jvmtiEventCallbacks callbacks;
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static jint result = PASSED;
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static jmethodID mid1, mid2;
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static jthread currThread = NULL, popThread = NULL;
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static jclass currClass = NULL, popClass = NULL;
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static jmethodID currMethod = NULL, popMethod = NULL;
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static jboolean currFlag = JNI_FALSE, popFlag = JNI_FALSE;
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static jint currLoc = 0, popLoc = 0;
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void JNICALL
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FramePop(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread,
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jmethodID method, jboolean wasPopedByException) {
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jvmtiError err;
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popThread = env->NewGlobalRef(thread);
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err = jvmti_env->GetMethodDeclaringClass(method, &popClass);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetMethodDeclaringClass) 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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popClass = (jclass) env->NewGlobalRef(popClass);
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popMethod = method;
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popFlag = wasPopedByException;
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err = jvmti_env->GetLocalInt(thread, 0, 1, &popLoc);
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if (err == JVMTI_ERROR_MUST_POSSESS_CAPABILITY &&
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!caps.can_access_local_variables) {
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/* It is OK */
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} else if (err != JVMTI_ERROR_NONE) {
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printf("(GetLocalInt#pop) 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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void JNICALL
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ExceptionCatch(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread,
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jmethodID method, jlocation location, jobject exception) {
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jvmtiError err;
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if (method == mid1 || method == mid2) {
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currThread = env->NewGlobalRef(thread);
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err = jvmti_env->GetMethodDeclaringClass(
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method, &currClass);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetMethodDeclaringClass) 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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currClass = (jclass) env->NewGlobalRef(currClass);
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currMethod = method;
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err = jvmti_env->GetLocalInt(thread, 0, 1, &currLoc);
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if (err == JVMTI_ERROR_MUST_POSSESS_CAPABILITY &&
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!caps.can_access_local_variables) {
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/* It is OK */
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} else if (err != JVMTI_ERROR_NONE) {
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printf("(GetLocalInt#catch) 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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if (method == mid2) {
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currFlag = JNI_TRUE;
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}
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err = jvmti_env->NotifyFramePop(thread, 0);
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if (err != JVMTI_ERROR_NONE) {
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printf("(NotifyFramePop#catch) 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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}
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_nframepop001(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_nframepop001(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_nframepop001(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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jint res;
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jvmtiError err;
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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_generate_frame_pop_events &&
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caps.can_generate_exception_events) {
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callbacks.ExceptionCatch = &ExceptionCatch;
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callbacks.FramePop = &FramePop;
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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: FramePop or ExceptionCatch event is not implemented\n");
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}
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if (!caps.can_access_local_variables) {
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printf("Warning: GetLocalInt 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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return JNI_OK;
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}
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JNIEXPORT void JNICALL
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Java_nsk_jvmti_NotifyFramePop_nframepop001_getMethIds(JNIEnv *env, jclass cl) {
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jvmtiError err;
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if (caps.can_generate_frame_pop_events) {
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err = jvmti->SetEventNotificationMode(JVMTI_ENABLE,
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JVMTI_EVENT_FRAME_POP, NULL);
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if (err != JVMTI_ERROR_NONE) {
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printf("Failed to enable FRAME_POP event: %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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}
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mid1 = env->GetMethodID(cl, "meth01", "(I)V");
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if (mid1 == NULL) {
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printf("Cannot find method \"meth01\"\n");
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result = STATUS_FAILED;
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return;
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}
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mid2 = env->GetMethodID(cl, "meth02", "(I)V");
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if (mid2 == NULL) {
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printf("Cannot find method \"meth02\"\n");
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result = STATUS_FAILED;
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return;
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}
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if (caps.can_generate_exception_events) {
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err = jvmti->SetEventNotificationMode(JVMTI_ENABLE,
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JVMTI_EVENT_EXCEPTION_CATCH, NULL);
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if (err != JVMTI_ERROR_NONE) {
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printf("Failed to enable EXCEPTION_CATCH event: %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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}
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}
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JNIEXPORT void JNICALL
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Java_nsk_jvmti_NotifyFramePop_nframepop001_setFramePopNotif(JNIEnv *env,
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jclass cl, jthread thr) {
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jvmtiError err;
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if (!caps.can_generate_frame_pop_events || !caps.can_suspend) {
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return;
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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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return;
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}
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currThread = env->NewGlobalRef(thr);
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currClass = env->FindClass("nsk/jvmti/NotifyFramePop/nframepop001a");
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if (currClass == NULL) {
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printf("Cannot find nsk.jvmti.NotifyFramePop.nframepop001a class!\n");
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result = STATUS_FAILED;
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return;
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}
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currClass = (jclass) env->NewGlobalRef(currClass);
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currMethod = env->GetMethodID(currClass, "run", "()V");
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if (currMethod == NULL) {
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printf("Cannot find method \"run\"\n");
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result = STATUS_FAILED;
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}
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err = jvmti->GetLocalInt(thr, 0, 1, &currLoc);
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if (err == JVMTI_ERROR_MUST_POSSESS_CAPABILITY &&
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!caps.can_access_local_variables) {
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/* It is OK */
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} else if (err != JVMTI_ERROR_NONE) {
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printf("(GetLocalInt) 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->NotifyFramePop(thr, 0);
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if (err != JVMTI_ERROR_NONE) {
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printf("(NotifyFramePop) 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->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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}
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JNIEXPORT void JNICALL
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Java_nsk_jvmti_NotifyFramePop_nframepop001_checkFrame(JNIEnv *env,
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jclass cls, jint point) {
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if (!caps.can_generate_frame_pop_events) {
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return;
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}
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if (!env->IsSameObject(currThread, popThread)) {
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printf("Point %d: thread is not the same as expected\n", point);
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result = STATUS_FAILED;
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}
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if (!env->IsSameObject(currClass, popClass)) {
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printf("Point %d: class is not the same as expected\n", point);
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result = STATUS_FAILED;
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}
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if (currMethod != popMethod) {
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printf("Point %d: method ID expected: 0x%p, actual: 0x%p\n",
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point, currMethod, popMethod);
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result = STATUS_FAILED;
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}
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if (currFlag != popFlag) {
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printf("Point %d: was_poped_by_exception expected: %d, actual: %d\n",
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point, currFlag, popFlag);
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result = STATUS_FAILED;
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}
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if (currLoc != popLoc) {
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printf("Point %d: local expected: %d, actual: %d\n",
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point, currLoc, popLoc);
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result = STATUS_FAILED;
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}
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currThread = NULL; popThread = NULL;
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currClass = NULL; popClass = NULL;
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currMethod = NULL; popMethod = NULL;
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currFlag = JNI_FALSE; popFlag = JNI_FALSE;
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currLoc = 0; popLoc = 0;
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}
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JNIEXPORT jint JNICALL
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Java_nsk_jvmti_NotifyFramePop_nframepop001_getRes(JNIEnv *env, jclass cls) {
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return result;
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}
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}
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