84 lines
2.9 KiB
Java
84 lines
2.9 KiB
Java
/*
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* Copyright (c) 2019, 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 4656449 4945125 8074355
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* @summary Make MutexLocker smarter about non-Java threads
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* @library /test/lib
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* @run driver/timeout=240 ShutdownTest
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*/
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// This test is adapted from an old regression test for bug 4945125, where VerifyBeforeExit
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// crashes before exit for the regression test for bug 4656449.
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// The fix is to acquire the Heap_lock before exit after the JavaThread is removed from
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// the threads list. This fix is still valid. This code requires Heap_lock be acquired
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// without a safepoint check at exit.
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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public class ShutdownTest {
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Object[] obj;
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ShutdownTest() {
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// Allocate to get some GC pressure.
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obj = new Object[100000];
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}
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static class ShutdownTestThread extends Thread {
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public void run() {
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while (true) {
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ShutdownTest st = new ShutdownTest();
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}
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}
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public static void main(String args[]) {
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System.out.println("- ShutdownTest -");
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for (int i = 0; i < 100; i++) {
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ShutdownTestThread st = new ShutdownTestThread();
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st.setDaemon(true);
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st.start();
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}
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}
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}
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private static void startVM(String... options) throws Throwable {
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// Combine VM flags given from command-line and your additional options
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OutputAnalyzer output = ProcessTools.executeTestJava(options);
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output.shouldContain("- ShutdownTest -");
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output.shouldHaveExitValue(0);
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}
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public static void main(String[] args) throws Throwable {
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// To reproduce original bug you may need this option: "-Xmx2500k",
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for (int iteration = 0; iteration < 5; ++iteration) {
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startVM("-XX:+UnlockDiagnosticVMOptions",
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"-XX:+VerifyBeforeExit",
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ShutdownTestThread.class.getName());
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}
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}
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}
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