Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

 * Copyright (c) 2013, 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 /testlibrary

  * @build TestMaxNewSize

  * @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 com.oracle.java.testlibrary.*;

 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);

   }

 }