76 lines
2.6 KiB
Java
76 lines
2.6 KiB
Java
/*
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* Copyright (c) 2021, 2023, 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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/*
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* @test
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* @bug 8212155
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* @summary Test concurrent enabling and posting of DynamicCodeGenerated events.
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* @requires vm.jvmti
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* @library /test/lib
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* @run main/othervm/native -agentlib:DynamicCodeGenerated DynamicCodeGeneratedTest
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*/
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import java.lang.ref.Reference;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.concurrent.locks.LockSupport;
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public class DynamicCodeGeneratedTest {
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static {
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System.loadLibrary("DynamicCodeGenerated");
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}
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public static native void changeEventNotificationMode();
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public static void main(String[] args) throws Exception {
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// Try to enable DynamicCodeGenerated event while it is posted
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// using JvmtiDynamicCodeEventCollector from VtableStubs::find_stub
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Thread threadChangeENM = new Thread(() -> {
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changeEventNotificationMode();
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});
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threadChangeENM.setDaemon(true);
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threadChangeENM.start();
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Runnable task = () -> {
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String result = "string" + System.currentTimeMillis();
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// Park to provoke re-mounting of virtual thread.
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LockSupport.parkNanos(1);
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Reference.reachabilityFence(result);
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};
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for (int i = 0; i < 10; i++) {
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List<Thread> threads = new ArrayList();
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for (int j = 0; j < 200; j++) {
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threads.add(Thread.ofVirtual().unstarted(task));
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threads.add(Thread.ofPlatform().unstarted(task));
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}
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for (Thread t: threads) {
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t.start();
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}
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for (Thread t: threads) {
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t.join();
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}
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}
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}
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}
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