94 lines
3.7 KiB
Java
94 lines
3.7 KiB
Java
/*
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* Copyright (c) 2013, 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.arguments;
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/*
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* @test TestG1HeapRegionSize
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* @bug 8021879
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* @requires vm.gc.G1 & vm.opt.G1HeapRegionSize == null
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* @summary Verify that the flag G1HeapRegionSize is updated properly
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* @modules java.base/jdk.internal.misc
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* @modules java.management/sun.management
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* @library /test/lib
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* @library /
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* @run driver gc.arguments.TestG1HeapRegionSize
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*/
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import java.util.ArrayList;
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import java.util.Arrays;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.Platform;
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public class TestG1HeapRegionSize {
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private static void checkG1HeapRegionSize(String[] flags, int expectedValue, int exitValue) throws Exception {
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ArrayList<String> flagList = new ArrayList<String>();
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flagList.addAll(Arrays.asList(flags));
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flagList.add("-XX:+UseG1GC");
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flagList.add("-XX:+PrintFlagsFinal");
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flagList.add("-version");
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OutputAnalyzer output = GCArguments.executeTestJava(flagList);
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output.shouldHaveExitValue(exitValue);
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if (exitValue == 0) {
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String stdout = output.getStdout();
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int flagValue = getFlagValue("G1HeapRegionSize", stdout);
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if (flagValue != expectedValue) {
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throw new RuntimeException("Wrong value for G1HeapRegionSize. Expected " + expectedValue + " but got " + flagValue);
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}
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}
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}
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private static int getFlagValue(String flag, String where) {
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Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where);
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if (!m.find()) {
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throw new RuntimeException("Could not find value for flag " + flag + " in output string");
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}
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String match = m.group();
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return Integer.parseInt(match.substring(match.lastIndexOf(" ") + 1, match.length()));
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}
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public static void main(String args[]) throws Exception {
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final int M = 1024 * 1024;
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checkG1HeapRegionSize(new String[] { "-Xmx64m" /* default is 1m */ }, 1*M, 0);
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checkG1HeapRegionSize(new String[] { "-Xmx64m", "-XX:G1HeapRegionSize=2m" }, 2*M, 0);
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checkG1HeapRegionSize(new String[] { "-Xmx64m", "-XX:G1HeapRegionSize=3m" }, 4*M, 0);
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checkG1HeapRegionSize(new String[] { "-Xmx256m", "-XX:G1HeapRegionSize=32m" }, 32*M, 0);
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if (Platform.is64bit()) {
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checkG1HeapRegionSize(new String[] { "-Xmx4096m", "-XX:G1HeapRegionSize=64m" }, 64*M, 0);
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checkG1HeapRegionSize(new String[] { "-Xmx4096m", "-XX:G1HeapRegionSize=512m" }, 512*M, 0);
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checkG1HeapRegionSize(new String[] { "-Xmx4096m", "-XX:G1HeapRegionSize=1024m" }, 512*M, 1);
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checkG1HeapRegionSize(new String[] { "-Xmx128g" }, 32*M, 0);
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} else {
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checkG1HeapRegionSize(new String[] { "-Xmx256m", "-XX:G1HeapRegionSize=64m" }, 64*M, 1);
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}
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}
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}
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