77 lines
2.9 KiB
Java
77 lines
2.9 KiB
Java
/*
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* Copyright (c) 2022, 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;
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/*
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* @test TestPLABAdaptToMinTLABSize
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* @bug 8289137
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* @summary Make sure that Young/OldPLABSize adapt to MinTLABSize setting.
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* @requires vm.gc.Parallel | 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.TestPLABAdaptToMinTLABSize
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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 TestPLABAdaptToMinTLABSize {
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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("-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.executeTestJava(testArguments);
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System.out.println(output.getStderr());
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if (shouldSucceed) {
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output.shouldHaveExitValue(0);
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long oldPLABSize = Long.parseLong(output.firstMatch("OldPLABSize\\s+=\\s(\\d+)",1));
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long youngPLABSize = Long.parseLong(output.firstMatch("YoungPLABSize\\s+=\\s(\\d+)",1));
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long minTLABSize = Long.parseLong(output.firstMatch("MinTLABSize\\s+=\\s(\\d+)",1));
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System.out.println("OldPLABSize=" + oldPLABSize + " YoungPLABSize=" + youngPLABSize +
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"MinTLABSize=" + minTLABSize);
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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(true, "-XX:MinTLABSize=100k");
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// Should not succeed when explicitly specifying invalid combination.
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runTest(false, "-XX:MinTLABSize=100k", "-XX:OldPLABSize=5k");
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runTest(false, "-XX:MinTLABSize=100k", "-XX:YoungPLABSize=5k");
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}
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}
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