73 lines
2.3 KiB
C++
73 lines
2.3 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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#include "jvmti_common.hpp"
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extern "C" {
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static jvmtiEnv* jvmti = nullptr;
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JNIEXPORT jint JNICALL
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Java_jvmti_JVMTIUtils_init(JNIEnv *jni, jclass cls) {
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JavaVM* jvm;
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jni->GetJavaVM(&jvm);
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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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jvmtiCapabilities caps;
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memset(&caps, 0, sizeof (caps));
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caps.can_suspend = 1;
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caps.can_signal_thread = 1;
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jvmtiError err = jvmti->AddCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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LOG("error in JVMTI AddCapabilities: %d\n", err);
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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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JNIEXPORT void JNICALL
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Java_jvmti_JVMTIUtils_stopThread(JNIEnv *jni, jclass cls, jthread thread, jobject exception) {
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jvmtiError err = jvmti->StopThread(thread, exception);
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if (err == JVMTI_ERROR_THREAD_NOT_ALIVE) {
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LOG("JVMTI_ERROR_THREAD_NOT_ALIVE happened\n");
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return;
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}
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check_jvmti_status(jni, err, "Error during StopThread()");
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}
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JNIEXPORT jint JNICALL
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Java_jvmti_JVMTIUtils_suspendThread0(JNIEnv *jni, jclass cls, jthread thread) {
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return jvmti->SuspendThread(thread);
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}
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JNIEXPORT jint JNICALL
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Java_jvmti_JVMTIUtils_resumeThread0(JNIEnv *jni, jclass cls, jthread thread) {
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return jvmti->ResumeThread(thread);
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}
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}
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