1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test TestMaxNewSize 26 * @key gc 27 * @bug 7057939 28 * @summary Make sure that MaxNewSize always has a useful value after argument 29 * processing. 30 * @library /testlibrary 31 * @build TestMaxNewSize 32 * @run main TestMaxNewSize -XX:+UseSerialGC 33 * @run main TestMaxNewSize -XX:+UseParallelGC 34 * @run main TestMaxNewSize -XX:+UseConcMarkSweepGC 35 * @run main TestMaxNewSize -XX:+UseG1GC 36 * @author thomas.schatzl@oracle.com, jesper.wilhelmsson@oracle.com 37 */ 38 39 import java.util.regex.Matcher; 40 import java.util.regex.Pattern; 41 42 import java.math.BigInteger; 43 44 import java.util.ArrayList; 45 import java.util.Arrays; 46 47 import com.oracle.java.testlibrary.*; 48 49 public class TestMaxNewSize { 50 51 private static void checkMaxNewSize(String[] flags, int heapsize) throws Exception { 52 BigInteger actual = new BigInteger(getMaxNewSize(flags)); 53 System.out.println(actual); 54 if (actual.compareTo(new BigInteger((new Long(heapsize)).toString())) == 1) { 55 throw new RuntimeException("MaxNewSize value set to \"" + actual + 56 "\", expected otherwise when running with the following flags: " + Arrays.asList(flags).toString()); 57 } 58 } 59 60 private static void checkIncompatibleNewSize(String[] flags) throws Exception { 61 ArrayList<String> finalargs = new ArrayList<String>(); 62 finalargs.addAll(Arrays.asList(flags)); 63 finalargs.add("-version"); 64 65 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0])); 66 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 67 output.shouldContain("Initial young gen size set larger than the maximum young gen size"); 68 } 69 70 private static boolean isRunningG1(String[] args) { 71 for (int i = 0; i < args.length; i++) { 72 if (args[i].contains("+UseG1GC")) { 73 return true; 74 } 75 } 76 return false; 77 } 78 79 private static String getMaxNewSize(String[] flags) throws Exception { 80 ArrayList<String> finalargs = new ArrayList<String>(); 81 finalargs.addAll(Arrays.asList(flags)); 82 if (isRunningG1(flags)) { 83 finalargs.add("-XX:G1HeapRegionSize=1M"); 84 } 85 finalargs.add("-XX:+PrintFlagsFinal"); 86 finalargs.add("-version"); 87 88 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0])); 89 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 90 output.shouldHaveExitValue(0); 91 String stdout = output.getStdout(); 92 //System.out.println(stdout); 93 return getFlagValue("MaxNewSize", stdout); 94 } 95 96 private static String getFlagValue(String flag, String where) { 97 Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where); 98 if (!m.find()) { 99 throw new RuntimeException("Could not find value for flag " + flag + " in output string"); 100 } 101 String match = m.group(); 102 return match.substring(match.lastIndexOf(" ") + 1, match.length()); 103 } 104 105 public static void main(String args[]) throws Exception { 106 String gcName = args[0]; 107 final int M32 = 32 * 1024 * 1024; 108 final int M64 = 64 * 1024 * 1024; 109 final int M96 = 96 * 1024 * 1024; 110 final int M128 = 128 * 1024 * 1024; 111 checkMaxNewSize(new String[] { gcName, "-Xmx128M" }, M128); 112 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewRatio=5" }, M128); 113 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewSize=32M" }, M128); 114 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:OldSize=96M" }, M128); 115 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:MaxNewSize=32M" }, M32); 116 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewSize=32M", "-XX:MaxNewSize=32M" }, M32); 117 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewRatio=6", "-XX:MaxNewSize=32M" }, M32); 118 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-Xms96M" }, M128); 119 checkMaxNewSize(new String[] { gcName, "-Xmx96M", "-Xms96M" }, M96); 120 checkIncompatibleNewSize(new String[] {gcName, "-XX:NewSize=100M", "-XX:MaxNewSize=50M"}); 121 // User input should be checked before any alignment adjusts the values 122 checkIncompatibleNewSize(new String[] {gcName, "-XX:NewSize=" + M32, "-XX:MaxNewSize=" + (M32 - 1)}); 123 } 124 }