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annotate test/runtime/CompressedOops/CompressedClassPointers.java @ 20218:828056cf311f

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8040792: G1: Memory usage calculation uses sizeof(this) instead of sizeof(classname) Summary: A few locations in the code use sizeof(this) which returns the size of the pointer instead of sizeof(classname) which returns the size of the sum of its members. This change fixes these errors and adds a few tests. Reviewed-by: mgerdin, brutisso
author tschatzl
date Mon, 21 Jul 2014 09:40:19 +0200
parents 209aa13ab8c0
children de7f1b016d55
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2013, 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
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26 * @bug 8024927
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27 * @summary Testing address of compressed class pointer space as best as possible.
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28 * @library /testlibrary
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29 */
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30
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31 import com.oracle.java.testlibrary.*;
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32
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33 public class CompressedClassPointers {
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34
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35 public static void smallHeapTest() throws Exception {
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36 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
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37 "-XX:+UnlockDiagnosticVMOptions",
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38 "-XX:SharedBaseAddress=8g",
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39 "-Xmx128m",
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40 "-XX:+PrintCompressedOopsMode",
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41 "-XX:+VerifyBeforeGC", "-version");
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42 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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43 output.shouldContain("Narrow klass base: 0x0000000000000000");
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44 output.shouldHaveExitValue(0);
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45 }
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46
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47 public static void smallHeapTestWith3G() throws Exception {
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48 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
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49 "-XX:+UnlockDiagnosticVMOptions",
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50 "-XX:CompressedClassSpaceSize=3g",
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51 "-Xmx128m",
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52 "-XX:+PrintCompressedOopsMode",
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53 "-XX:+VerifyBeforeGC", "-version");
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54 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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55 output.shouldContain("Narrow klass base: 0x0000000000000000, Narrow klass shift: 3");
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56 output.shouldHaveExitValue(0);
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57 }
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58
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59 public static void largeHeapTest() throws Exception {
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60 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
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61 "-XX:+UnlockDiagnosticVMOptions",
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62 "-Xmx30g",
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63 "-XX:+PrintCompressedOopsMode",
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64 "-XX:+VerifyBeforeGC", "-version");
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65 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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66 output.shouldNotContain("Narrow klass base: 0x0000000000000000");
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67 output.shouldContain("Narrow klass shift: 0");
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68 output.shouldHaveExitValue(0);
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69 }
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70
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71 public static void largePagesTest() throws Exception {
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72 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
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73 "-XX:+UnlockDiagnosticVMOptions",
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74 "-Xmx128m",
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75 "-XX:+UseLargePages",
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76 "-XX:+PrintCompressedOopsMode",
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77 "-XX:+VerifyBeforeGC", "-version");
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78 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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79 output.shouldContain("Narrow klass base:");
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80 output.shouldHaveExitValue(0);
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81 }
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82
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83 public static void sharingTest() throws Exception {
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84 // Test small heaps
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85 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
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86 "-XX:+UnlockDiagnosticVMOptions",
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87 "-XX:SharedArchiveFile=./sample.jsa",
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88 "-Xmx128m",
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89 "-XX:SharedBaseAddress=8g",
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90 "-XX:+PrintCompressedOopsMode",
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91 "-XX:+VerifyBeforeGC",
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92 "-Xshare:dump");
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93 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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94 try {
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95 output.shouldContain("Loading classes to share");
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96 output.shouldHaveExitValue(0);
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97
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98 pb = ProcessTools.createJavaProcessBuilder(
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99 "-XX:+UnlockDiagnosticVMOptions",
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100 "-XX:SharedArchiveFile=./sample.jsa",
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101 "-Xmx128m",
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102 "-XX:SharedBaseAddress=8g",
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103 "-XX:+PrintCompressedOopsMode",
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104 "-Xshare:on",
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105 "-version");
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106 output = new OutputAnalyzer(pb.start());
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107 output.shouldContain("sharing");
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108 output.shouldHaveExitValue(0);
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109
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110 } catch (RuntimeException e) {
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111 output.shouldContain("Unable to use shared archive");
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112 output.shouldHaveExitValue(1);
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113 }
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114 }
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115
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116 public static void main(String[] args) throws Exception {
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117 if (!Platform.is64bit()) {
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118 // Can't test this on 32 bit, just pass
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119 System.out.println("Skipping test on 32bit");
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120 return;
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121 }
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122 // Solaris 10 can't mmap compressed oops space without a base
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123 if (Platform.isSolaris()) {
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124 String name = System.getProperty("os.version");
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125 if (name.equals("5.10")) {
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126 System.out.println("Skipping test on Solaris 10");
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127 return;
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128 }
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129 }
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130 smallHeapTest();
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131 smallHeapTestWith3G();
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132 largeHeapTest();
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133 largePagesTest();
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134 sharingTest();
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135 }
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136 }