85 lines
3.2 KiB
Java
85 lines
3.2 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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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.Utils;
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import jdk.test.whitebox.WhiteBox;
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/*
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* @test HandshakeTimeoutTest
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* @bug 8262454 8267651
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* @summary Test handshake timeout.
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* @requires vm.debug
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* @library /testlibrary /test/lib
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* @build HandshakeTimeoutTest
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run driver HandshakeTimeoutTest
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*/
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public class HandshakeTimeoutTest {
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public static void main(String[] args) throws Exception {
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ProcessBuilder pb =
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ProcessTools.createTestJavaProcessBuilder(
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"-Xbootclasspath/a:.",
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"-XX:+UnlockDiagnosticVMOptions",
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"-XX:+WhiteBoxAPI",
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"-XX:+HandshakeALot",
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"-XX:GuaranteedSafepointInterval=10",
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"-XX:ParallelGCThreads=1",
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"-XX:ConcGCThreads=1",
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"-XX:CICompilerCount=2",
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"-XX:+UnlockExperimentalVMOptions",
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"-XX:HandshakeTimeout=50",
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"-XX:-CreateCoredumpOnCrash",
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"HandshakeTimeoutTest$Test");
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OutputAnalyzer output = ProcessTools.executeProcess(pb);
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output.shouldNotHaveExitValue(0);
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output.reportDiagnosticSummary();
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// In rare cases the target wakes up and performs the handshake at the same time as we timeout.
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// Therefore it's not certain the timeout will find any thread.
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output.shouldMatch("has not cleared handshake op|No thread with an unfinished handshake op");
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}
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static class Test implements Runnable {
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public static void main(String[] args) throws Exception {
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Test test = new Test();
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Thread thread = new Thread(test);
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thread.start();
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thread.join();
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}
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@Override
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public void run() {
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while (true) {
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// If there is a safepoint this thread might still be able to perform
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// it's handshake in time. Therefore we loop util failure.
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WhiteBox.getWhiteBox().waitUnsafe(100);
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}
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}
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}
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}
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