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8265240: runtime/Thread/SuspendAtExit.java needs updating
Reviewed-by: rehn, dholmes
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Daniel D. Daugherty
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Apr 23, 2021
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/* | ||
* Copyright (c) 2001, 2021, 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. | ||
*/ | ||
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#include <string.h> | ||
#include "jvmti.h" | ||
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extern "C" { | ||
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static jvmtiEnv* jvmti = NULL; | ||
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#define LOG(...) \ | ||
do { \ | ||
printf(__VA_ARGS__); \ | ||
printf("\n"); \ | ||
fflush(stdout); \ | ||
} while (0) | ||
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JNIEXPORT jint JNICALL | ||
Java_SuspendAtExit_suspendThread(JNIEnv *jni, jclass cls, jthread thr) { | ||
return jvmti->SuspendThread(thr); | ||
} | ||
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JNIEXPORT jint JNICALL | ||
Java_SuspendAtExit_resumeThread(JNIEnv *jni, jclass cls, jthread thr) { | ||
return jvmti->ResumeThread(thr); | ||
} | ||
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/** Agent library initialization. */ | ||
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JNIEXPORT jint JNICALL | ||
Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) { | ||
LOG("\nAgent_OnLoad started"); | ||
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// create JVMTI environment | ||
if (jvm->GetEnv((void **) (&jvmti), JVMTI_VERSION) != JNI_OK) { | ||
return JNI_ERR; | ||
} | ||
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// add specific capabilities for suspending thread | ||
jvmtiCapabilities suspendCaps; | ||
memset(&suspendCaps, 0, sizeof(suspendCaps)); | ||
suspendCaps.can_suspend = 1; | ||
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jvmtiError err = jvmti->AddCapabilities(&suspendCaps); | ||
if (err != JVMTI_ERROR_NONE) { | ||
return JNI_ERR; | ||
} | ||
LOG("Agent_OnLoad finished\n"); | ||
return JNI_OK; | ||
} | ||
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} |
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