86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
/*
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* Copyright (c) 2022, 2024, 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 <string.h>
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#include "jvmti.h"
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extern "C" {
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static jvmtiEnv* jvmti = nullptr;
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static jrawMonitorID monitor;
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JNIEXPORT jint JNICALL
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Java_AsyncExceptionOnMonitorEnter_createRawMonitor(JNIEnv *jni, jclass cls) {
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jvmtiError err;
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char name[32];
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snprintf(name, sizeof(name), "MyRawMonitor");
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err = jvmti->CreateRawMonitor(name, &monitor);
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if (err != JVMTI_ERROR_NONE) {
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printf("CreateRawMonitor unexpected error: (%d)\n", err);
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}
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return err;
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}
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JNIEXPORT jint JNICALL
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Java_AsyncExceptionOnMonitorEnter_enterRawMonitor(JNIEnv *jni, jclass cls) {
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jvmtiError err;
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err = jvmti->RawMonitorEnter(monitor);
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if (err != JVMTI_ERROR_NONE) {
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printf("RawMonitorEnter unexpected error: (%d)\n", err);
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}
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return err;
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}
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JNIEXPORT jint JNICALL
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Java_AsyncExceptionOnMonitorEnter_exitRawMonitor(JNIEnv *jni, jclass cls) {
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jvmtiError err;
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err = jvmti->RawMonitorExit(monitor);
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if (err != JVMTI_ERROR_NONE) {
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printf("RawMonitorExit unexpected error: (%d)\n", err);
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}
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return err;
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}
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JNIEXPORT void JNICALL
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Java_AsyncExceptionOnMonitorEnter_destroyRawMonitor(JNIEnv *jni, jclass cls) {
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jvmtiError err;
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err = jvmti->DestroyRawMonitor(monitor);
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// Almost always worker2 will be stopped before being able to release the
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// JVMTI monitor so just ignore those errors.
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if (err != JVMTI_ERROR_NONE && err != JVMTI_ERROR_NOT_MONITOR_OWNER) {
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printf("DestroyRawMonitor unexpected error: (%d)\n", err);
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}
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}
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JNIEXPORT jint JNICALL
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Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
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// create JVMTI environment
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if (jvm->GetEnv((void **) (&jvmti), JVMTI_VERSION) != JNI_OK) {
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return JNI_ERR;
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}
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return JNI_OK;
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}
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}
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