95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2021, 2022, 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 <string.h>
|
|
#include "jvmti.h"
|
|
#include "jvmti_common.h"
|
|
|
|
static jvmtiEnv *jvmti = NULL;
|
|
|
|
extern "C" {
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_SelfSuspendDisablerTest_resume(JNIEnv* jni, jclass cls, jthread thread) {
|
|
check_jvmti_status(jni, jvmti->ResumeThread(thread), "Error in ResumeThread");
|
|
}
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_SelfSuspendDisablerTest_selfSuspend(JNIEnv* jni, jclass cls) {
|
|
jthread thread;
|
|
check_jvmti_status(jni, jvmti->GetCurrentThread(&thread), "Error in CurrentThread");
|
|
check_jvmti_status(jni, jvmti->SuspendThread(thread), "Error in SuspendThread");
|
|
}
|
|
|
|
JNIEXPORT jboolean JNICALL
|
|
Java_SelfSuspendDisablerTest_isSuspended(JNIEnv* jni, jclass cls, jthread thread) {
|
|
jint state;
|
|
check_jvmti_status(jni, jvmti->GetThreadState(thread, &state), "Error in GetThreadState");
|
|
return (state & JVMTI_THREAD_STATE_SUSPENDED) != 0;
|
|
}
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_SelfSuspendDisablerTest_suspendAllVirtualThreads(JNIEnv* jni, jclass cls) {
|
|
check_jvmti_status(jni, jvmti->SuspendAllVirtualThreads(0, NULL), "Error in SuspendAllVirtualThreads");
|
|
}
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_SelfSuspendDisablerTest_resumeAllVirtualThreads(JNIEnv* jni, jclass cls) {
|
|
check_jvmti_status(jni, jvmti->ResumeAllVirtualThreads(0, NULL), "Error in ResumeAllVirtualThreads");
|
|
}
|
|
|
|
JNIEXPORT jint JNICALL
|
|
Java_SelfSuspendDisablerTest_getThreadState(JNIEnv* jni, jclass cls, jthread thread) {
|
|
jint state;
|
|
check_jvmti_status(jni, jvmti->GetThreadState(thread, &state), "Error in GetThreadState");
|
|
return state;
|
|
}
|
|
|
|
} // extern "C"
|
|
|
|
|
|
JNIEXPORT jint JNICALL
|
|
Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
|
|
jvmtiError err;
|
|
|
|
LOG("Agent init started\n");
|
|
|
|
if (jvm->GetEnv((void **)(&jvmti), JVMTI_VERSION) != JNI_OK) {
|
|
LOG("Agent init: error in getting JvmtiEnv with GetEnv\n");
|
|
return JNI_ERR;
|
|
}
|
|
|
|
jvmtiCapabilities caps;
|
|
memset(&caps, 0, sizeof(caps));
|
|
caps.can_suspend = 1;
|
|
caps.can_support_virtual_threads = 1;
|
|
|
|
err = jvmti->AddCapabilities(&caps);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
return JNI_ERR;
|
|
}
|
|
|
|
LOG("Agent init finished\n");
|
|
return JNI_OK;
|
|
}
|