Mercurial > hg > truffle
annotate test/compiler/rtm/locking/TestRTMLockingThreshold.java @ 20398:19fc73d027a6
8055052: [TESTBUG] runtime/NMT/JcmdDetailDiff.java fails on Windows when there are no debug symbols available
Reviewed-by: ctornqvi, hseigel
author | gtriantafill |
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date | Fri, 22 Aug 2014 06:46:29 -0700 |
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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 |
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25 /** |
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26 * @test |
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27 * @bug 8031320 |
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28 * @summary Verify that RTMLockingThreshold affects rtm state transition |
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29 * ProfileRTM => UseRTM. |
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30 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary |
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31 * @build TestRTMLockingThreshold |
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32 * @run main ClassFileInstaller sun.hotspot.WhiteBox |
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33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
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34 * -XX:+WhiteBoxAPI TestRTMLockingThreshold |
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35 */ |
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36 |
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37 import java.util.List; |
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38 import com.oracle.java.testlibrary.*; |
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39 import com.oracle.java.testlibrary.cli.CommandLineOptionTest; |
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40 import com.oracle.java.testlibrary.cli.predicate.AndPredicate; |
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41 import rtm.*; |
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42 import rtm.predicate.SupportedCPU; |
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43 import rtm.predicate.SupportedVM; |
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44 import sun.misc.Unsafe; |
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45 |
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46 /** |
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47 * Test verifies that RTMLockingThreshold option actually affects how soon |
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48 * method will be deoptimized on low abort ratio. |
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49 */ |
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50 public class TestRTMLockingThreshold extends CommandLineOptionTest { |
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51 private TestRTMLockingThreshold() { |
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52 super(new AndPredicate(new SupportedVM(), new SupportedCPU())); |
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53 } |
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54 |
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55 /** |
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56 * We use non-zero abort threshold to avoid abort related to |
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57 * interrupts, VMM calls, etc. during first lock attempt. |
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58 * |
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59 */ |
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60 private static final int ABORT_THRESHOLD = 10; |
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61 |
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62 @Override |
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63 protected void runTestCases() throws Throwable { |
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64 verifyLockingThreshold(0, false); |
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65 verifyLockingThreshold(100, false); |
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66 verifyLockingThreshold(1000, false); |
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67 |
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68 verifyLockingThreshold(0, true); |
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69 verifyLockingThreshold(100, true); |
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70 verifyLockingThreshold(1000, true); |
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71 } |
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72 |
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73 private void verifyLockingThreshold(int lockingThreshold, |
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74 boolean useStackLock) throws Throwable { |
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75 CompilableTest test = new Test(); |
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76 |
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77 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( |
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78 test, |
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79 "-XX:CompileThreshold=1", |
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80 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", |
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81 useStackLock), |
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82 "-XX:+UseRTMDeopt", |
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83 "-XX:RTMTotalCountIncrRate=1", |
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84 "-XX:RTMRetryCount=0", |
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85 CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold", |
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86 TestRTMLockingThreshold.ABORT_THRESHOLD), |
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87 CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold", |
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88 lockingThreshold), |
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89 "-XX:RTMAbortRatio=100", |
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90 "-XX:+PrintPreciseRTMLockingStatistics", |
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91 Test.class.getName(), |
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92 Boolean.toString(!useStackLock), |
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93 Integer.toString(lockingThreshold) |
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94 ); |
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95 |
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96 outputAnalyzer.shouldHaveExitValue(0); |
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97 |
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98 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( |
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99 test.getMethodWithLockName(), outputAnalyzer.getOutput()); |
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100 |
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101 Asserts.assertEQ(statistics.size(), 2, "VM output should contain two " |
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102 + "RTM locking statistics entries."); |
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103 |
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104 /** |
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105 * We force abort on each odd iteration, so if RTMLockingThreshold==0, |
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106 * then we have to make 1 call without abort to avoid rtm state |
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107 * transition to NoRTM (otherwise actual abort ratio will be 100%), |
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108 * and after that make 1 call with abort to force deoptimization. |
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109 * This leads us to two locks for threshold 0. |
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110 * For other threshold values we have to make RTMLockingThreshold + 1 |
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111 * locks if locking threshold is even, or + 0 if odd. |
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112 */ |
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113 long expectedValue = lockingThreshold + |
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114 (lockingThreshold == 0L ? 2L : lockingThreshold % 2L); |
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115 |
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116 RTMLockingStatistics statBeforeDeopt = null; |
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117 for (RTMLockingStatistics s : statistics) { |
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118 if (s.getTotalLocks() == expectedValue) { |
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119 Asserts.assertNull(statBeforeDeopt, |
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120 "Only one statistics entry should contain aborts"); |
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121 statBeforeDeopt = s; |
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122 } |
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123 } |
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124 |
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125 Asserts.assertNotNull(statBeforeDeopt, "There should be exactly one " |
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126 + "statistics entry corresponding to ProfileRTM state."); |
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127 } |
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128 |
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129 public static class Test implements CompilableTest { |
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130 // Following field have to be static in order to avoid escape analysis. |
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131 @SuppressWarnings("UnsuedDeclaration") |
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132 private static int field = 0; |
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133 private static final int TOTAL_ITERATIONS = 10000; |
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134 private static final Unsafe UNSAFE = Utils.getUnsafe(); |
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135 private final Object monitor = new Object(); |
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136 |
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137 |
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138 @Override |
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139 public String getMethodWithLockName() { |
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140 return this.getClass().getName() + "::lock"; |
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141 } |
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142 |
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143 @Override |
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144 public String[] getMethodsToCompileNames() { |
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145 return new String[] { |
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146 getMethodWithLockName(), |
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147 sun.misc.Unsafe.class.getName() + "::addressSize" |
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148 }; |
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149 } |
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150 |
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151 public void lock(boolean abort) { |
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152 synchronized(monitor) { |
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153 if (abort) { |
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154 Test.field += Test.UNSAFE.addressSize(); |
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155 } |
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156 } |
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157 } |
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158 |
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159 /** |
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160 * Usage: |
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161 * Test <inflate monitor> |
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162 */ |
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163 public static void main(String args[]) throws Throwable { |
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164 Asserts.assertGTE(args.length, 1, "One argument required."); |
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165 Test t = new Test(); |
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166 |
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167 if (Boolean.valueOf(args[0])) { |
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168 AbortProvoker.inflateMonitor(t.monitor); |
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169 } |
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170 for (int i = 0; i < Test.TOTAL_ITERATIONS; i++) { |
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171 t.lock(i % 2 == 1); |
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172 } |
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173 } |
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174 } |
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175 |
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176 public static void main(String args[]) throws Throwable { |
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177 new TestRTMLockingThreshold().test(); |
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178 } |
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179 } |