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annotate test/gc/arguments/TestSurvivorAlignmentInBytesOption.java @ 20717:4b7c96fba3d8

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8037968: Add tests on alignment of objects copied to survivor space Reviewed-by: jmasa, dfazunen
author fzhinkin
date Wed, 26 Nov 2014 14:17:06 +0400
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children 75d8afb5d37a
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20717
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1 /*
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2 * Copyright (c) 2014, 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 import com.oracle.java.testlibrary.ExitCode;
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25 import com.oracle.java.testlibrary.Utils;
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26 import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
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27
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28 import java.util.Collections;
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29 import java.util.LinkedList;
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30 import java.util.List;
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31
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32 /**
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33 * @test
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34 * @bug 8031323
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35 * @summary Verify SurvivorAlignmentInBytes option processing.
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36 * @library /testlibrary
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37 * @run main TestSurvivorAlignmentInBytesOption
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38 */
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39 public class TestSurvivorAlignmentInBytesOption {
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40 private static final String[] FILTERED_VM_OPTIONS
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41 = Utils.getFilteredTestJavaOpts(
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42 "UnlockExperimentalVMOptions",
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43 "SurvivorAlignmentInBytes",
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44 "ObjectAlignmentInBytes");
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45
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46 public static void main(String args[]) throws Throwable {
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47 String optionName = "SurvivorAlignmentInBytes";
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48 String optionIsExperimental
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49 = CommandLineOptionTest.getExperimentalOptionErrorMessage(
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50 optionName);
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51 String valueIsTooSmall= ".*SurvivorAlignmentInBytes=.*must be greater"
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52 + " than ObjectAlignmentInBytes.*";
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53 String mustBePowerOf2 = ".*SurvivorAlignmentInBytes=.*must be "
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54 + "power of 2.*";
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55
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56 // Verify that without -XX:+UnlockExperimentalVMOptions usage of
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57 // SurvivorAlignmentInBytes option will cause JVM startup failure
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58 // with the warning message saying that that option is experimental.
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59 CommandLineOptionTest.verifyJVMStartup(
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60 new String[]{optionIsExperimental}, null, ExitCode.FAIL, false,
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61 TestSurvivorAlignmentInBytesOption.prepareOptions(
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62 "-XX:-UnlockExperimentalVMOptions",
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63 CommandLineOptionTest.prepareNumericFlag(
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64 optionName, 64)));
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65
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66 // Verify that with -XX:+UnlockExperimentalVMOptions passed to JVM
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67 // usage of SurvivorAlignmentInBytes option won't cause JVM startup
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68 // failure.
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69 CommandLineOptionTest.verifyJVMStartup(
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70 null, new String[]{optionIsExperimental}, ExitCode.OK, false,
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71 TestSurvivorAlignmentInBytesOption.prepareOptions(
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72 CommandLineOptionTest.prepareNumericFlag(
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73 optionName, 64)));
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74
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75 // Verify that if specified SurvivorAlignmentInBytes is lower then
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76 // ObjectAlignmentInBytes, then the JVM startup will fail with
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77 // appropriate error message.
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78 CommandLineOptionTest.verifyJVMStartup(
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79 new String[]{valueIsTooSmall}, null, ExitCode.FAIL, false,
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80 TestSurvivorAlignmentInBytesOption.prepareOptions(
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81 CommandLineOptionTest.prepareNumericFlag(
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82 optionName, 2)));
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83
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84 // Verify that if specified SurvivorAlignmentInBytes value is not
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85 // a power of 2 then the JVM startup will fail with appropriate error
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86 // message.
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87 CommandLineOptionTest.verifyJVMStartup(
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88 new String[]{mustBePowerOf2}, null, ExitCode.FAIL, false,
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89 TestSurvivorAlignmentInBytesOption.prepareOptions(
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90 CommandLineOptionTest.prepareNumericFlag(
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91 optionName, 127)));
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92
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93 // Verify that if SurvivorAlignmentInBytes has correct value, then
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94 // the JVM will be started without errors.
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95 CommandLineOptionTest.verifyJVMStartup(
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96 null, new String[]{".*SurvivorAlignmentInBytes.*"},
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97 ExitCode.OK, false,
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98 TestSurvivorAlignmentInBytesOption.prepareOptions(
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99 CommandLineOptionTest.prepareNumericFlag(
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100 optionName, 128)));
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101
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102 // Verify that we can setup different SurvivorAlignmentInBytes values.
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103 for (int alignment = 32; alignment <= 128; alignment *= 2) {
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104 CommandLineOptionTest.verifyOptionValue(optionName,
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105 Integer.toString(alignment), false,
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106 TestSurvivorAlignmentInBytesOption.prepareOptions(
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107 CommandLineOptionTest.prepareNumericFlag(
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108 optionName, alignment)));
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109 }
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110 }
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111
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112 private static String[] prepareOptions(String... options) {
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113 List<String> finalOptions = new LinkedList<>();
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114 Collections.addAll(finalOptions,
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115 TestSurvivorAlignmentInBytesOption.FILTERED_VM_OPTIONS);
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116 finalOptions.add(CommandLineOptionTest.UNLOCK_EXPERIMENTAL_VM_OPTIONS);
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117 Collections.addAll(finalOptions, options);
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118 return finalOptions.toArray(new String[finalOptions.size()]);
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119 }
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120 }