Mercurial > hg > graal-jvmci-8
annotate test/gc/g1/TestShrinkAuxiliaryData.java @ 22981:f967da7f0c3c
8062537: [TESTBUG] Conflicting GC combinations in hotspot tests
Reviewed-by: tschatzl, jwilhelm
author | jwilhelm |
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date | Thu, 23 Apr 2015 15:59:48 +0200 |
parents | 7a6313074325 |
children | e5406a79ae90 |
rev | line source |
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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 static com.oracle.java.testlibrary.Asserts.assertLessThanOrEqual; |
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25 import com.oracle.java.testlibrary.OutputAnalyzer; |
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26 import com.oracle.java.testlibrary.Platform; |
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27 import com.oracle.java.testlibrary.ProcessTools; |
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28 import com.oracle.java.testlibrary.Utils; |
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29 import java.io.IOException; |
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30 import java.lang.management.ManagementFactory; |
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31 import java.lang.management.MemoryUsage; |
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32 import java.text.DecimalFormat; |
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33 import java.text.DecimalFormatSymbols; |
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34 import java.util.ArrayList; |
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35 import java.util.Arrays; |
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36 import java.util.Collections; |
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37 import java.util.LinkedList; |
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38 import java.util.List; |
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39 import sun.misc.Unsafe; |
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40 |
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41 public class TestShrinkAuxiliaryData { |
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42 |
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43 private final static String[] initialOpts = new String[]{ |
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44 "-XX:MinHeapFreeRatio=10", |
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45 "-XX:MaxHeapFreeRatio=11", |
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46 "-XX:+UseG1GC", |
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47 "-XX:G1HeapRegionSize=1m", |
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48 "-XX:-ExplicitGCInvokesConcurrent", |
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49 "-XX:+PrintGCDetails" |
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50 }; |
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51 |
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52 private final int RSetCacheSize; |
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53 |
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54 protected TestShrinkAuxiliaryData(int RSetCacheSize) { |
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55 this.RSetCacheSize = RSetCacheSize; |
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56 } |
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57 |
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58 protected void test() throws Exception { |
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59 ArrayList<String> vmOpts = new ArrayList(); |
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60 Collections.addAll(vmOpts, initialOpts); |
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61 |
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62 int maxCacheSize = Math.max(0, Math.min(31, getMaxCacheSize())); |
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63 if (maxCacheSize < RSetCacheSize) { |
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64 System.out.format("Skiping test for %d cache size due max cache size %d", |
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65 RSetCacheSize, maxCacheSize |
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66 ); |
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67 return; |
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68 } |
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69 |
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70 printTestInfo(maxCacheSize); |
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71 |
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72 vmOpts.add("-XX:G1ConcRSLogCacheSize=" + RSetCacheSize); |
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73 vmOpts.addAll(Arrays.asList(Utils.getTestJavaOpts())); |
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74 |
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75 // for 32 bits ObjectAlignmentInBytes is not a option |
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76 if (Platform.is32bit()) { |
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77 ArrayList<String> vmOptsWithoutAlign = new ArrayList(vmOpts); |
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78 vmOptsWithoutAlign.add(ShrinkAuxiliaryDataTest.class.getName()); |
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79 performTest(vmOptsWithoutAlign); |
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80 return; |
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81 } |
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82 |
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83 for (int alignment = 3; alignment <= 8; alignment++) { |
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84 ArrayList<String> vmOptsWithAlign = new ArrayList(vmOpts); |
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85 vmOptsWithAlign.add("-XX:ObjectAlignmentInBytes=" |
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86 + (int) Math.pow(2, alignment)); |
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87 vmOptsWithAlign.add(ShrinkAuxiliaryDataTest.class.getName()); |
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88 |
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89 performTest(vmOptsWithAlign); |
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90 } |
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91 } |
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92 |
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93 private void performTest(List<String> opts) throws Exception { |
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94 ProcessBuilder pb |
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95 = ProcessTools.createJavaProcessBuilder( |
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96 opts.toArray(new String[opts.size()]) |
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97 ); |
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98 |
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99 OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
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100 output.shouldHaveExitValue(0); |
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101 } |
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102 |
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103 private void printTestInfo(int maxCacheSize) { |
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104 |
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105 DecimalFormat grouped = new DecimalFormat("000,000"); |
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106 DecimalFormatSymbols formatSymbols = grouped.getDecimalFormatSymbols(); |
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107 formatSymbols.setGroupingSeparator(' '); |
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108 grouped.setDecimalFormatSymbols(formatSymbols); |
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109 |
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110 System.out.format("Test will use %s bytes of memory of %s available%n" |
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111 + "Available memory is %s with %d bytes pointer size - can save %s pointers%n" |
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112 + "Max cache size: 2^%d = %s elements%n", |
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113 grouped.format(ShrinkAuxiliaryDataTest.getMemoryUsedByTest()), |
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114 grouped.format(Runtime.getRuntime().freeMemory()), |
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115 grouped.format(Runtime.getRuntime().freeMemory() |
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116 - ShrinkAuxiliaryDataTest.getMemoryUsedByTest()), |
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117 Unsafe.ADDRESS_SIZE, |
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118 grouped.format((Runtime.getRuntime().freeMemory() |
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119 - ShrinkAuxiliaryDataTest.getMemoryUsedByTest()) |
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120 / Unsafe.ADDRESS_SIZE), |
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121 maxCacheSize, |
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122 grouped.format((int) Math.pow(2, maxCacheSize)) |
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123 ); |
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124 } |
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125 |
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126 /** |
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127 * Detects maximum possible size of G1ConcRSLogCacheSize available for |
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128 * current process based on maximum available process memory size |
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129 * |
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130 * @return power of two |
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131 */ |
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132 private static int getMaxCacheSize() { |
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133 long availableMemory = Runtime.getRuntime().freeMemory() |
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134 - ShrinkAuxiliaryDataTest.getMemoryUsedByTest() - 1l; |
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135 if (availableMemory <= 0) { |
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136 return 0; |
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137 } |
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138 long availablePointersCount = availableMemory / Unsafe.ADDRESS_SIZE; |
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139 return (63 - (int) Long.numberOfLeadingZeros(availablePointersCount)); |
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140 } |
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141 |
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142 static class ShrinkAuxiliaryDataTest { |
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143 |
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144 public static void main(String[] args) throws IOException { |
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145 int iterateCount = DEFAULT_ITERATION_COUNT; |
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146 |
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147 if (args.length > 0) { |
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148 try { |
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149 iterateCount = Integer.parseInt(args[0]); |
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150 } catch (NumberFormatException e) { |
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151 //num_iterate remains default |
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152 } |
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153 } |
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154 |
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155 new ShrinkAuxiliaryDataTest().test(iterateCount); |
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156 } |
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157 |
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158 class GarbageObject { |
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159 |
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160 private final List<byte[]> payload = new ArrayList(); |
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161 private final List<GarbageObject> ref = new LinkedList(); |
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162 |
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163 public GarbageObject(int size) { |
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164 payload.add(new byte[size]); |
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165 } |
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166 |
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167 public void addRef(GarbageObject g) { |
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168 ref.add(g); |
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169 } |
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170 |
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171 public void mutate() { |
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172 if (!payload.isEmpty() && payload.get(0).length > 0) { |
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173 payload.get(0)[0] = (byte) (Math.random() * Byte.MAX_VALUE); |
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174 } |
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175 } |
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176 } |
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177 |
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178 private final List<GarbageObject> garbage = new ArrayList(); |
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179 |
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180 public void test(int num_iterate) throws IOException { |
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181 |
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182 allocate(); |
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183 link(); |
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184 mutate(); |
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185 deallocate(); |
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186 |
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187 MemoryUsage muBeforeHeap |
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188 = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage(); |
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189 MemoryUsage muBeforeNonHeap |
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190 = ManagementFactory.getMemoryMXBean().getNonHeapMemoryUsage(); |
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191 |
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192 for (int i = 0; i < num_iterate; i++) { |
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193 allocate(); |
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194 link(); |
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195 mutate(); |
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196 deallocate(); |
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197 } |
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198 |
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199 System.gc(); |
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200 MemoryUsage muAfterHeap |
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201 = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage(); |
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202 MemoryUsage muAfterNonHeap |
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203 = ManagementFactory.getMemoryMXBean().getNonHeapMemoryUsage(); |
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204 |
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205 assertLessThanOrEqual(muAfterHeap.getCommitted(), muBeforeHeap.getCommitted(), |
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206 String.format("heap decommit failed - after > before: %d > %d", |
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207 muAfterHeap.getCommitted(), muBeforeHeap.getCommitted() |
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208 ) |
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209 ); |
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210 |
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211 if (muAfterHeap.getCommitted() < muBeforeHeap.getCommitted()) { |
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212 assertLessThanOrEqual(muAfterNonHeap.getCommitted(), muBeforeNonHeap.getCommitted(), |
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213 String.format("non-heap decommit failed - after > before: %d > %d", |
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214 muAfterNonHeap.getCommitted(), muBeforeNonHeap.getCommitted() |
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215 ) |
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216 ); |
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217 } |
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218 } |
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219 |
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220 private void allocate() { |
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221 for (int r = 0; r < REGIONS_TO_ALLOCATE; r++) { |
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222 for (int i = 0; i < NUM_OBJECTS_PER_REGION; i++) { |
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223 GarbageObject g = new GarbageObject(REGION_SIZE |
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224 / NUM_OBJECTS_PER_REGION); |
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225 garbage.add(g); |
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226 } |
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227 } |
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228 } |
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229 |
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230 /** |
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231 * Iterate through all allocated objects, and link to objects in another |
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232 * regions |
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233 */ |
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234 private void link() { |
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235 for (int ig = 0; ig < garbage.size(); ig++) { |
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236 int regionNumber = ig / NUM_OBJECTS_PER_REGION; |
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237 |
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238 for (int i = 0; i < NUM_LINKS; i++) { |
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239 int regionToLink; |
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240 do { |
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241 regionToLink = (int) (Math.random() |
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242 * REGIONS_TO_ALLOCATE); |
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243 } while (regionToLink == regionNumber); |
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244 |
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245 // get random garbage object from random region |
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246 garbage.get(ig).addRef(garbage.get(regionToLink |
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247 * NUM_OBJECTS_PER_REGION + (int) (Math.random() |
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248 * NUM_OBJECTS_PER_REGION))); |
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249 } |
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250 } |
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251 } |
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252 |
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253 private void mutate() { |
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254 for (int ig = 0; ig < garbage.size(); ig++) { |
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255 garbage.get(ig).mutate(); |
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256 } |
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257 } |
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258 |
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259 private void deallocate() { |
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260 garbage.clear(); |
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261 System.gc(); |
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262 } |
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263 |
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264 static long getMemoryUsedByTest() { |
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265 return REGIONS_TO_ALLOCATE * REGION_SIZE; |
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266 } |
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267 |
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268 private static final int REGION_SIZE = 1024 * 1024; |
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269 private static final int DEFAULT_ITERATION_COUNT = 1; // iterate main scenario |
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270 private static final int REGIONS_TO_ALLOCATE = 5; |
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271 private static final int NUM_OBJECTS_PER_REGION = 10; |
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272 private static final int NUM_LINKS = 20; // how many links create for each object |
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273 } |
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changeset
|
274 } |