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annotate test/gc/6941923/Test6941923.java @ 12986:1b422ef5288a

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8025728: Missing volatile specifier for field G1AllocRegion::_alloc_region Summary: The field G1AllocRegion::_alloc_region needs to be declared volatile as it is used with that intention. Otherwise the compiler may generate the code that reloads the value which might have changed in the meantime, leading to spurious crashes. Reviewed-by: iveresov, simonis, tschatzl Contributed-by: Axel Siebenborn <axel.siebenborn@sap.com>
author tschatzl
date Wed, 23 Oct 2013 10:23:06 +0200
parents 63f57a8c5283
children de6a9e811145
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 /*
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25 * @test Test6941923.java
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26 * @bug 6941923
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27 * @summary test flags for gc log rotation
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28 * @library /testlibrary
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29 * @run main/othervm/timeout=600 Test6941923
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30 *
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31 */
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32 import com.oracle.java.testlibrary.*;
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33 import java.io.File;
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34 import java.io.FilenameFilter;
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35 import java.util.ArrayList;
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36 import java.util.Arrays;
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37
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38 class GCLoggingGenerator {
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39
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40 public static void main(String[] args) throws Exception {
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41
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42 long sizeOfLog = Long.parseLong(args[0]);
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43 long lines = sizeOfLog / 80;
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44 // full.GC generates ad least 1-line which is not shorter then 80 chars
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45 // for some GC 2 shorter lines are generated
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46 for (long i = 0; i < lines; i++) {
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47 System.gc();
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48 }
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49 }
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50 }
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51
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52 public class Test6941923 {
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53
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54 static final File currentDirectory = new File(".");
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55 static final String logFileName = "test.log";
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56 static final int logFileSizeK = 16;
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57 static FilenameFilter logFilter = new FilenameFilter() {
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58 @Override
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59 public boolean accept(File dir, String name) {
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60 return name.startsWith(logFileName);
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61 }
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62 };
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63
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64 public static void cleanLogs() {
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65 for (File log : currentDirectory.listFiles(logFilter)) {
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66 if (!log.delete()) {
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67 throw new Error("Unable to delete " + log.getAbsolutePath());
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68 }
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69 }
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70 }
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71
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72 public static void runTest(int numberOfFiles) throws Exception {
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73
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74 ArrayList<String> args = new ArrayList();
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75 String[] logOpts = new String[]{
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76 "-cp", System.getProperty("java.class.path"),
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77 "-Xloggc:" + logFileName,
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78 "-XX:-DisableExplicitGC", // to sure that System.gc() works
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79 "-XX:+PrintGC", "-XX:+PrintGCDetails", "-XX:+UseGCLogFileRotation",
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80 "-XX:NumberOfGCLogFiles=" + numberOfFiles,
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81 "-XX:GCLogFileSize=" + logFileSizeK + "K", "-Xmx128M"};
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82 // System.getProperty("test.java.opts") is '' if no options is set
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83 // need to skip such empty
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84 String[] externalVMopts = System.getProperty("test.java.opts").length() == 0
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85 ? new String[0]
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86 : System.getProperty("test.java.opts").split(" ");
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87 args.addAll(Arrays.asList(externalVMopts));
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88 args.addAll(Arrays.asList(logOpts));
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89 args.add(GCLoggingGenerator.class.getName());
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90 args.add(String.valueOf(numberOfFiles * logFileSizeK * 1024));
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91 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args.toArray(new String[0]));
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92 pb.redirectErrorStream(true);
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93 pb.redirectOutput(new File(GCLoggingGenerator.class.getName() + ".log"));
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94 Process process = pb.start();
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95 int result = process.waitFor();
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96 if (result != 0) {
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97 throw new Error("Unexpected exit code = " + result);
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98 }
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99 File[] logs = currentDirectory.listFiles(logFilter);
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100 int smallFilesNumber = 0;
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101 for (File log : logs) {
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102 if (log.length() < logFileSizeK * 1024) {
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103 smallFilesNumber++;
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104 }
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105 }
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106 if (logs.length != numberOfFiles) {
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107 throw new Error("There are only " + logs.length + " logs instead " + numberOfFiles);
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108 }
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109 if (smallFilesNumber > 1) {
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110 throw new Error("There should maximum one log with size < " + logFileSizeK + "K");
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111 }
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112 }
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113
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114 public static void main(String[] args) throws Exception {
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115 cleanLogs();
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116 runTest(1);
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117 cleanLogs();
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118 runTest(3);
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119 cleanLogs();
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120 }
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121 }