95 lines
3.0 KiB
Java
95 lines
3.0 KiB
Java
/*
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* Copyright (c) 2015, 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 TestPLABOutput
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* @bug 8140585
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* @summary Check that G1 does not report empty PLAB statistics in the first evacuation.
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* @requires vm.gc.G1
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* @modules java.base/jdk.internal.misc
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* @library /test/lib
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run driver gc.g1.TestPLABOutput
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*/
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import jdk.test.whitebox.WhiteBox;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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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 static jdk.test.lib.Asserts.*;
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public class TestPLABOutput {
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public static void runTest() throws Exception {
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final String[] arguments = {
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"-Xbootclasspath/a:.",
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"-XX:+UnlockExperimentalVMOptions",
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"-XX:+UnlockDiagnosticVMOptions",
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"-XX:+WhiteBoxAPI",
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"-XX:+UseG1GC",
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"-Xmx10M",
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"-Xlog:gc+plab=debug",
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GCTest.class.getName()
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};
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OutputAnalyzer output = ProcessTools.executeLimitedTestJava(arguments);
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output.shouldHaveExitValue(0);
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System.out.println(output.getStdout());
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String pattern = ".*GC\\(0\\) .*allocated: (\\d+).*";
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Pattern r = Pattern.compile(pattern);
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Matcher m = r.matcher(output.getStdout());
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if (!m.find()) {
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throw new RuntimeException("Could not find any PLAB statistics output");
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}
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int allocated = Integer.parseInt(m.group(1));
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assertGT(allocated, 0, "Did not allocate any memory during test");
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}
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public static void main(String[] args) throws Exception {
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runTest();
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}
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static class GCTest {
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private static final WhiteBox WB = WhiteBox.getWhiteBox();
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public static Object holder;
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public static void main(String [] args) {
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holder = new byte[100];
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WB.youngGC();
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System.out.println(holder);
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}
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}
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}
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