1 /* 2 * Copyright (c) 2013, 2019, 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 package gc.arguments; 25 26 /* 27 * @test TestMaxNewSize 28 * @key gc 29 * @bug 7057939 30 * @summary Make sure that MaxNewSize always has a useful value after argument 31 * processing. 32 * @requires vm.gc=="null" 33 * @library /test/lib 34 * @modules java.base/jdk.internal.misc 35 * java.management 36 * @run main gc.arguments.TestMaxNewSize -XX:+UseSerialGC 37 * @run main gc.arguments.TestMaxNewSize -XX:+UseParallelGC 38 * @run main gc.arguments.TestMaxNewSize -XX:+UseG1GC 39 * @author thomas.schatzl@oracle.com, jesper.wilhelmsson@oracle.com 40 */ 41 42 /* 43 * @test TestMaxNewSizeCMS 44 * @key gc 45 * @bug 7057939 46 * @comment Graal does not support CMS 47 * @requires vm.gc=="null" & !vm.graal.enabled 48 * @library /test/lib 49 * @modules java.base/jdk.internal.misc 50 * java.management 51 * @run main gc.arguments.TestMaxNewSize -XX:+UseConcMarkSweepGC 52 */ 53 54 import java.util.regex.Matcher; 55 import java.util.regex.Pattern; 56 57 import java.math.BigInteger; 58 59 import java.util.ArrayList; 60 import java.util.Arrays; 61 62 import jdk.test.lib.process.OutputAnalyzer; 63 import jdk.test.lib.process.ProcessTools; 64 65 public class TestMaxNewSize { 66 67 private static void checkMaxNewSize(String[] flags, int heapsize) throws Exception { 68 BigInteger actual = new BigInteger(getMaxNewSize(flags)); 69 System.out.println(actual); 70 if (actual.compareTo(new BigInteger((new Long(heapsize)).toString())) == 1) { 71 throw new RuntimeException("MaxNewSize value set to \"" + actual + 72 "\", expected otherwise when running with the following flags: " + Arrays.asList(flags).toString()); 73 } 74 } 75 76 private static void checkIncompatibleNewSize(String[] flags) throws Exception { 77 ArrayList<String> finalargs = new ArrayList<String>(); 78 finalargs.addAll(Arrays.asList(flags)); 79 finalargs.add("-version"); 80 81 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0])); 82 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 83 output.shouldContain("Initial young gen size set larger than the maximum young gen size"); 84 } 85 86 private static boolean isRunningG1(String[] args) { 87 for (int i = 0; i < args.length; i++) { 88 if (args[i].contains("+UseG1GC")) { 89 return true; 90 } 91 } 92 return false; 93 } 94 95 private static String getMaxNewSize(String[] flags) throws Exception { 96 ArrayList<String> finalargs = new ArrayList<String>(); 97 finalargs.addAll(Arrays.asList(flags)); 98 if (isRunningG1(flags)) { 99 finalargs.add("-XX:G1HeapRegionSize=1M"); 100 } 101 finalargs.add("-XX:+PrintFlagsFinal"); 102 finalargs.add("-version"); 103 104 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0])); 105 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 106 output.shouldHaveExitValue(0); 107 String stdout = output.getStdout(); 108 //System.out.println(stdout); 109 return getFlagValue("MaxNewSize", stdout); 110 } 111 112 private static String getFlagValue(String flag, String where) { 113 Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where); 114 if (!m.find()) { 115 throw new RuntimeException("Could not find value for flag " + flag + " in output string"); 116 } 117 String match = m.group(); 118 return match.substring(match.lastIndexOf(" ") + 1, match.length()); 119 } 120 121 public static void main(String args[]) throws Exception { 122 String gcName = args[0]; 123 final int M = 1024 * 1024; 124 checkMaxNewSize(new String[] { gcName, "-Xmx128M" }, 128*M); 125 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewRatio=5" }, 128*M); 126 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewSize=32M" }, 128*M); 127 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:OldSize=96M" }, 128*M); 128 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:MaxNewSize=32M" }, 32*M); 129 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewSize=32M", "-XX:MaxNewSize=32M" }, 32*M); 130 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-XX:NewRatio=6", "-XX:MaxNewSize=32M" }, 32*M); 131 checkMaxNewSize(new String[] { gcName, "-Xmx128M", "-Xms96M" }, 128*M); 132 checkMaxNewSize(new String[] { gcName, "-Xmx96M", "-Xms96M" }, 96*M); 133 checkMaxNewSize(new String[] { gcName, "-XX:NewSize=128M", "-XX:MaxNewSize=50M"}, 128*M); 134 } 135 }