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/*
* Copyright (c) 2022, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package gc;
/*
* @test TestPLABAdaptToMinTLABSizeG1
* @bug 8289137
* @summary Make sure that Young/OldPLABSize adapt to MinTLABSize setting.
* @requires vm.gc.G1
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.management
* @run driver gc.TestPLABAdaptToMinTLABSize -XX:+UseG1GC
*/
/*
* @test TestPLABAdaptToMinTLABSizeParallel
* @bug 8289137
* @summary Make sure that Young/OldPLABSize adapt to MinTLABSize setting.
* @requires vm.gc.Parallel
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.management
* @run driver gc.TestPLABAdaptToMinTLABSize -XX:+UseParallelGC
*/
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
public class TestPLABAdaptToMinTLABSize {
private static void runTest(boolean shouldSucceed, String... extraArgs) throws Exception {
ArrayList<String> testArguments = new ArrayList<String>();
testArguments.add("-Xmx12m");
testArguments.add("-XX:+PrintFlagsFinal");
Collections.addAll(testArguments, extraArgs);
testArguments.add("-version");
OutputAnalyzer output = ProcessTools.executeTestJava(testArguments);
System.out.println(output.getStderr());
if (shouldSucceed) {
output.shouldHaveExitValue(0);
long oldPLABSize = Long.parseLong(output.firstMatch("OldPLABSize\\s+=\\s(\\d+)",1));
long youngPLABSize = Long.parseLong(output.firstMatch("YoungPLABSize\\s+=\\s(\\d+)",1));
long minTLABSize = Long.parseLong(output.firstMatch("MinTLABSize\\s+=\\s(\\d+)",1));
System.out.println("OldPLABSize=" + oldPLABSize + " YoungPLABSize=" + youngPLABSize +
"MinTLABSize=" + minTLABSize);
} else {
output.shouldNotHaveExitValue(0);
}
}
public static void main(String[] args) throws Exception {
String gc = args[0];
runTest(true, gc, "-XX:MinTLABSize=100k");
// Should not succeed when explicitly specifying invalid combination.
runTest(false, gc, "-XX:MinTLABSize=100k", "-XX:OldPLABSize=5k");
runTest(false, gc, "-XX:MinTLABSize=100k", "-XX:YoungPLABSize=5k");
}
}
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