89 lines
3.6 KiB
Java
89 lines
3.6 KiB
Java
/*
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* Copyright (c) 2020, 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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package gc.g1;
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/*
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* @test TestMarkStackSizes
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* @bug 8238855
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* @summary Consistency checks for marking flag related options.
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* @requires vm.gc.G1
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* java.management
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* @run driver gc.g1.TestMarkStackSizes
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*/
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import java.util.ArrayList;
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import java.util.Collections;
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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 TestMarkStackSizes {
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private static void runTest(boolean shouldSucceed, String... extraArgs) throws Exception {
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ArrayList<String> testArguments = new ArrayList<String>();
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testArguments.add("-XX:+UseG1GC");
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testArguments.add("-Xmx12m");
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testArguments.add("-XX:+PrintFlagsFinal");
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Collections.addAll(testArguments, extraArgs);
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testArguments.add("-version");
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OutputAnalyzer output = ProcessTools.executeLimitedTestJava(testArguments);
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System.out.println(output.getStderr());
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if (shouldSucceed) {
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long markStackSize = Long.parseLong(output.firstMatch("MarkStackSize\\s+=\\s(\\d+)",1));
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long markStackSizeMax = Long.parseLong(output.firstMatch("MarkStackSizeMax\\s+=\\s(\\d+)",1));
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long concGCThreads = Long.parseLong(output.firstMatch("ConcGCThreads\\s+=\\s(\\d+)",1));
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long parallelGCThreads = Long.parseLong(output.firstMatch("ParallelGCThreads\\s+=\\s(\\d+)",1));
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System.out.println("MarkStackSize=" + markStackSize + " MarkStackSizeMax=" + markStackSizeMax +
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"ConcGCThreads=" + concGCThreads + " ParallelGCThreads=" + parallelGCThreads);
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output.shouldHaveExitValue(0);
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} else {
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output.shouldNotHaveExitValue(0);
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}
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}
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public static void main(String[] args) throws Exception {
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runTest(false, "-XX:MarkStackSize=0");
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runTest(false, "-XX:MarkStackSizeMax=0");
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runTest(true, "-XX:MarkStackSize=100", "-XX:MarkStackSizeMax=101");
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runTest(true, "-XX:MarkStackSize=101", "-XX:MarkStackSizeMax=101");
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runTest(false, "-XX:MarkStackSize=101", "-XX:MarkStackSizeMax=100");
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runTest(true, "-XX:ConcGCThreads=3", "-XX:ParallelGCThreads=3");
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runTest(true, "-XX:ConcGCThreads=0", "-XX:ParallelGCThreads=3");
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runTest(true, "-XX:ConcGCThreads=4", "-XX:ParallelGCThreads=3");
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// With that high ParallelGCThreads the default ergonomics would calculate
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// a mark stack size higher than maximum mark stack size.
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runTest(true, "-XX:ParallelGCThreads=100", "-XX:MarkStackSizeMax=100");
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}
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}
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