aoqi@0: /*
aoqi@0: * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0: *
aoqi@0: * This code is free software; you can redistribute it and/or modify it
aoqi@0: * under the terms of the GNU General Public License version 2 only, as
aoqi@0: * published by the Free Software Foundation.
aoqi@0: *
aoqi@0: * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0: * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0: * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0: * accompanied this code).
aoqi@0: *
aoqi@0: * You should have received a copy of the GNU General Public License version
aoqi@0: * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0: *
aoqi@0: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0: * or visit www.oracle.com if you need additional information or have any
aoqi@0: * questions.
aoqi@0: */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * @test TestMaxNewSize
aoqi@0:  * @key gc
aoqi@0:  * @bug 7057939
aoqi@0:  * @summary Make sure that MaxNewSize always has a useful value after argument
aoqi@0:  * processing.
aoqi@0:  * @library /testlibrary
aoqi@0:  * @build TestMaxNewSize
aoqi@0:  * @run main TestMaxNewSize -XX:+UseSerialGC
aoqi@0:  * @run main TestMaxNewSize -XX:+UseParallelGC
aoqi@0:  * @run main TestMaxNewSize -XX:+UseConcMarkSweepGC
aoqi@0:  * @run main TestMaxNewSize -XX:+UseG1GC
aoqi@0:  * @author thomas.schatzl@oracle.com, jesper.wilhelmsson@oracle.com
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.util.regex.Matcher;
aoqi@0: import java.util.regex.Pattern;
aoqi@0: 
aoqi@0: import java.math.BigInteger;
aoqi@0: 
aoqi@0: import java.util.ArrayList;
aoqi@0: import java.util.Arrays;
aoqi@0: 
aoqi@0: import com.oracle.java.testlibrary.*;
aoqi@0: 
aoqi@0: public class TestMaxNewSize {
aoqi@0: 
aoqi@0:   private static void checkMaxNewSize(String[] flags, int heapsize) throws Exception {
aoqi@0:     BigInteger actual = new BigInteger(getMaxNewSize(flags));
aoqi@0:     System.out.println(actual);
aoqi@0:     if (actual.compareTo(new BigInteger((new Long(heapsize)).toString())) == 1) {
aoqi@0:       throw new RuntimeException("MaxNewSize value set to \"" + actual +
aoqi@0:         "\", expected otherwise when running with the following flags: " + Arrays.asList(flags).toString());
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   private static void checkIncompatibleNewSize(String[] flags) throws Exception {
aoqi@0:     ArrayList<String> finalargs = new ArrayList<String>();
aoqi@0:     finalargs.addAll(Arrays.asList(flags));
aoqi@0:     finalargs.add("-version");
aoqi@0: 
aoqi@0:     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0]));
aoqi@0:     OutputAnalyzer output = new OutputAnalyzer(pb.start());
aoqi@0:     output.shouldContain("Initial young gen size set larger than the maximum young gen size");
aoqi@0:   }
aoqi@0: 
aoqi@0:   private static boolean isRunningG1(String[] args) {
aoqi@0:     for (int i = 0; i < args.length; i++) {
aoqi@0:       if (args[i].contains("+UseG1GC")) {
aoqi@0:         return true;
aoqi@0:       }
aoqi@0:     }
aoqi@0:     return false;
aoqi@0:   }
aoqi@0: 
aoqi@0:   private static String getMaxNewSize(String[] flags) throws Exception {
aoqi@0:     ArrayList<String> finalargs = new ArrayList<String>();
aoqi@0:     finalargs.addAll(Arrays.asList(flags));
aoqi@0:     if (isRunningG1(flags)) {
aoqi@0:       finalargs.add("-XX:G1HeapRegionSize=1M");
aoqi@0:     }
aoqi@0:     finalargs.add("-XX:+PrintFlagsFinal");
aoqi@0:     finalargs.add("-version");
aoqi@0: 
aoqi@0:     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0]));
aoqi@0:     OutputAnalyzer output = new OutputAnalyzer(pb.start());
aoqi@0:     output.shouldHaveExitValue(0);
aoqi@0:     String stdout = output.getStdout();
aoqi@0:     //System.out.println(stdout);
aoqi@0:     return getFlagValue("MaxNewSize", stdout);
aoqi@0:   }
aoqi@0: 
aoqi@0:   private static String getFlagValue(String flag, String where) {
aoqi@0:     Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where);
aoqi@0:     if (!m.find()) {
aoqi@0:       throw new RuntimeException("Could not find value for flag " + flag + " in output string");
aoqi@0:     }
aoqi@0:     String match = m.group();
aoqi@0:     return match.substring(match.lastIndexOf(" ") + 1, match.length());
aoqi@0:   }
aoqi@0: 
aoqi@0:   public static void main(String args[]) throws Exception {
aoqi@0:     String gcName = args[0];
aoqi@0:     final int M32 = 32 * 1024 * 1024;
aoqi@0:     final int M64 = 64 * 1024 * 1024;
aoqi@0:     final int M96 = 96 * 1024 * 1024;
aoqi@0:     final int M128 = 128 * 1024 * 1024;
aoqi@0:     checkMaxNewSize(new String[] { gcName, "-Xmx128M" }, M128);
aoqi@0:     checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewRatio=5" }, M128);
aoqi@0:     checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewSize=32M" }, M128);
aoqi@0:     checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:OldSize=96M" }, M128);
aoqi@0:     checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:MaxNewSize=32M" }, M32);
aoqi@0:     checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewSize=32M", "-XX:MaxNewSize=32M" }, M32);
aoqi@0:     checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewRatio=6", "-XX:MaxNewSize=32M" }, M32);
aoqi@0:     checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-Xms96M" }, M128);
aoqi@0:     checkMaxNewSize(new String[] { gcName, "-Xmx96M", "-Xms96M" }, M96);
aoqi@0:     checkMaxNewSize(new String[] { gcName, "-XX:NewSize=128M", "-XX:MaxNewSize=50M"}, M128);
aoqi@0:   }
aoqi@0: }