71 lines
3.3 KiB
Java
71 lines
3.3 KiB
Java
/*
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* Copyright (c) 2016, 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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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.Asserts;
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import sun.hotspot.WhiteBox;
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/* @test TestMetaspaceCMSCancel
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* @bug 8026752
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* @summary Tests cancel of CMS concurrent cycle for Metaspace after a full GC
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* @build sun.hotspot.WhiteBox
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* @run main ClassFileInstaller sun.hotspot.WhiteBox
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* @run main/othervm TestMetaspaceCMSCancel
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*/
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public class TestMetaspaceCMSCancel {
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public static void main(String[] args) throws Exception {
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// Set a small MetaspaceSize so that a CMS concurrent collection will be
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// scheduled. Set CMSWaitDuration to 5s so that the concurrent collection
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// start may be delayed. It does not guarantee 5s before the start of the
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// concurrent collection but does increase the probability that it will
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// be started later. System.gc() is used to invoke a full collection. Set
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// ExplicitGCInvokesConcurrent to off so it is a STW collection.
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ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xbootclasspath/a:.",
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"-XX:+UnlockDiagnosticVMOptions",
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"-XX:+WhiteBoxAPI",
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"-XX:+UseConcMarkSweepGC",
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"-XX:MetaspaceSize=2m",
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"-XX:CMSWaitDuration=5000",
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"-XX:-ExplicitGCInvokesConcurrent",
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"-Xlog:gc*=debug",
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MetaspaceGCTest.class.getName());
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OutputAnalyzer output = new OutputAnalyzer(pb.start());
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output.shouldNotContain("Concurrent Reset");
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output.shouldHaveExitValue(0);
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}
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static class MetaspaceGCTest {
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public static void main(String [] args) {
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WhiteBox wb = WhiteBox.getWhiteBox();
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System.gc();
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Asserts.assertFalse(wb.metaspaceShouldConcurrentCollect());
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}
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}
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}
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