| /* |
| * Copyright (c) 2013, 2016, 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. |
| * @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:+UseConcMarkSweepGC |
| * @run main TestMaxNewSize -XX:+UseG1GC |
| * @author thomas.schatzl@oracle.com, jesper.wilhelmsson@oracle.com |
| */ |
| |
| 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); |
| } |
| } |