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/*
* Copyright (c) 2013, 2018, 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.
*/
/*
* @test TestMaxNewSize
* @key gc
* @bug 7057939
* @summary Make sure that MaxNewSize always has a useful value after argument
* processing.
* @requires vm.gc=="null"
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.management
* @run main TestMaxNewSize -XX:+UseSerialGC
* @run main TestMaxNewSize -XX:+UseParallelGC
* @run main TestMaxNewSize -XX:+UseG1GC
* @author thomas.schatzl@oracle.com, jesper.wilhelmsson@oracle.com
*/
/*
* @test TestMaxNewSizeCMS
* @key gc
* @bug 7057939
* @comment Graal does not support CMS
* @requires vm.gc=="null" & !vm.graal.enabled
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.management
* @run main TestMaxNewSize -XX:+UseConcMarkSweepGC
*/
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
public class TestMaxNewSize {
private static void checkMaxNewSize(String[] flags, int heapsize) throws Exception {
BigInteger actual = new BigInteger(getMaxNewSize(flags));
System.out.println(actual);
if (actual.compareTo(new BigInteger((new Long(heapsize)).toString())) == 1) {
throw new RuntimeException("MaxNewSize value set to \"" + actual +
"\", expected otherwise when running with the following flags: " + Arrays.asList(flags).toString());
}
}
private static void checkIncompatibleNewSize(String[] flags) throws Exception {
ArrayList<String> finalargs = new ArrayList<String>();
finalargs.addAll(Arrays.asList(flags));
finalargs.add("-version");
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0]));
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldContain("Initial young gen size set larger than the maximum young gen size");
}
private static boolean isRunningG1(String[] args) {
for (int i = 0; i < args.length; i++) {
if (args[i].contains("+UseG1GC")) {
return true;
}
}
return false;
}
private static String getMaxNewSize(String[] flags) throws Exception {
ArrayList<String> finalargs = new ArrayList<String>();
finalargs.addAll(Arrays.asList(flags));
if (isRunningG1(flags)) {
finalargs.add("-XX:G1HeapRegionSize=1M");
}
finalargs.add("-XX:+PrintFlagsFinal");
finalargs.add("-version");
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0]));
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldHaveExitValue(0);
String stdout = output.getStdout();
//System.out.println(stdout);
return getFlagValue("MaxNewSize", stdout);
}
private static String getFlagValue(String flag, String where) {
Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where);
if (!m.find()) {
throw new RuntimeException("Could not find value for flag " + flag + " in output string");
}
String match = m.group();
return match.substring(match.lastIndexOf(" ") + 1, match.length());
}
public static void main(String args[]) throws Exception {
String gcName = args[0];
final int M32 = 32 * 1024 * 1024;
final int M64 = 64 * 1024 * 1024;
final int M96 = 96 * 1024 * 1024;
final int M128 = 128 * 1024 * 1024;
checkMaxNewSize(new String[] { gcName, "-Xmx128M" }, M128);
checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewRatio=5" }, M128);
checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewSize=32M" }, M128);
checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:OldSize=96M" }, M128);
checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:MaxNewSize=32M" }, M32);
checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewSize=32M", "-XX:MaxNewSize=32M" }, M32);
checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewRatio=6", "-XX:MaxNewSize=32M" }, M32);
checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-Xms96M" }, M128);
checkMaxNewSize(new String[] { gcName, "-Xmx96M", "-Xms96M" }, M96);
checkMaxNewSize(new String[] { gcName, "-XX:NewSize=128M", "-XX:MaxNewSize=50M"}, M128);
}
}
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