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annotate test/compiler/rtm/locking/TestRTMAfterNonRTMDeopt.java @ 19348:ef292a5bb79d

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Truffle-DSL: fix findbugs comparison warnings.
author Christian Humer <christian.humer@gmail.com>
date Fri, 13 Feb 2015 11:37:13 +0100
parents ba8268c23fa2
children
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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 if we use RTMDeopt, then deoptimization
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29 * caused by reason other then rtm_state_change will reset
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30 * method's RTM state. And if we don't use RTMDeopt, then
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31 * RTM state remain the same after such deoptimization.
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32 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
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33 * @build TestRTMAfterNonRTMDeopt
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34 * @run main ClassFileInstaller sun.hotspot.WhiteBox
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35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
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36 * -XX:+WhiteBoxAPI TestRTMAfterNonRTMDeopt
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37 */
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38
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39 import java.util.List;
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40 import com.oracle.java.testlibrary.*;
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41 import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
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42 import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
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43 import rtm.*;
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44 import rtm.predicate.SupportedCPU;
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45 import rtm.predicate.SupportedVM;
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46 import sun.misc.Unsafe;
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47
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48 /**
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49 * To verify that with +UseRTMDeopt method's RTM state will be
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50 * changed to ProfileRTM on deoptimization unrelated to
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51 * rtm_state_change following sequence of events is used:
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52 * <pre>
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53 *
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54 * rtm state ^
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55 * |
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56 * UseRTM | ******| ******
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57 * | |
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58 * ProfileRTM |******| |*****|
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59 * | | | |
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60 * 0-------|-----|-----|---------------------&gt; time
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61 * | | \ force abort
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62 * | |
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63 * | \ force deoptimization
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64 * |
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65 * \ force xabort
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66 * </pre>
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67 * When xabort is forced by native method call method should
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68 * change it's state to UseRTM, because we use RTMAbortRatio=100
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69 * and low RTMLockingThreshold, so at this point actual abort
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70 * ratio will be below 100% and there should be enough lock
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71 * attempts to recompile method without RTM profiling.
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72 */
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73 public class TestRTMAfterNonRTMDeopt extends CommandLineOptionTest {
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74 private static final int ABORT_THRESHOLD = 1000;
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75 private static final String RANGE_CHECK = "range_check";
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76
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77 private TestRTMAfterNonRTMDeopt() {
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78 super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
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79 }
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80
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81 @Override
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82 protected void runTestCases() throws Throwable {
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83 verifyRTMAfterDeopt(false, false);
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84 verifyRTMAfterDeopt(true, false);
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85
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86 verifyRTMAfterDeopt(false, true);
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87 verifyRTMAfterDeopt(true, true);
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88 }
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89
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90 private void verifyRTMAfterDeopt(boolean useStackLock,
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91 boolean useRTMDeopt) throws Throwable {
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92 CompilableTest test = new Test();
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93 String logFile = String.format("rtm_%s_stack_lock_%s_deopt.xml",
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94 (useStackLock ? "use" : "no"), (useRTMDeopt ? "use" : "no"));
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95
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96 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
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97 logFile,
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98 test,
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99 "-XX:CompileThreshold=1",
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100 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
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101 useStackLock),
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102 CommandLineOptionTest.prepareBooleanFlag("UseRTMDeopt",
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103 useRTMDeopt),
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104 "-XX:RTMAbortRatio=100",
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105 CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold",
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106 TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD),
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107 CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold",
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108 TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD / 2L),
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109 "-XX:RTMTotalCountIncrRate=1",
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110 "-XX:+PrintPreciseRTMLockingStatistics",
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111 Test.class.getName(),
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112 Boolean.toString(!useStackLock)
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113 );
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114
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115 outputAnalyzer.shouldHaveExitValue(0);
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116
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117 int traps = RTMTestBase.firedRTMStateChangeTraps(logFile);
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118
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119 if (useRTMDeopt) {
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120 Asserts.assertEQ(traps, 2, "Two uncommon traps with "
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121 + "reason rtm_state_change should be fired.");
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122 } else {
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123 Asserts.assertEQ(traps, 0, "No uncommon traps with "
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124 + "reason rtm_state_change should be fired.");
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125 }
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126
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127 int rangeCheckTraps = RTMTestBase.firedUncommonTraps(logFile,
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128 TestRTMAfterNonRTMDeopt.RANGE_CHECK);
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129
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130 Asserts.assertEQ(rangeCheckTraps, 1,
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131 "One range_check uncommon trap should be fired.");
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132
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133 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
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134 test.getMethodWithLockName(), outputAnalyzer.getOutput());
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135
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136 int expectedStatEntries = (useRTMDeopt ? 4 : 2);
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137
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138 Asserts.assertEQ(statistics.size(), expectedStatEntries,
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139 String.format("VM output should contain %d RTM locking "
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140 + "statistics entries.", expectedStatEntries));
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141 }
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142
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143 public static class Test implements CompilableTest {
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144 // Following field have to be static in order to avoid escape analysis.
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145 @SuppressWarnings("UnsuedDeclaration")
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146 private static int field = 0;
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147 private static final int ITERATIONS = 10000;
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148 private static final int RANGE_CHECK_AT = ITERATIONS / 2;
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149 private static final Unsafe UNSAFE = Utils.getUnsafe();
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150 private final Object monitor = new Object();
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151
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152 @Override
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153 public String getMethodWithLockName() {
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154 return this.getClass().getName() + "::forceAbort";
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155 }
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156
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157 @Override
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158 public String[] getMethodsToCompileNames() {
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159 return new String[] {
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160 getMethodWithLockName(),
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161 sun.misc.Unsafe.class.getName() + "::forceAbort"
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162 };
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163 }
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164
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165 public void forceAbort(int a[], boolean abort) {
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166 try {
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167 synchronized(monitor) {
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168 a[0]++;
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169 if (abort) {
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170 Test.field = Test.UNSAFE.addressSize();
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171 }
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172 }
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173 } catch (Throwable t) {
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174 // suppress any throwables
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175 }
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176 }
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177
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178 /**
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179 * Usage:
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180 * Test &lt;inflate monitor&gt;
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181 */
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182 public static void main(String args[]) throws Throwable {
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183 Test t = new Test();
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184
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185 if (Boolean.valueOf(args[0])) {
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186 AbortProvoker.inflateMonitor(t.monitor);
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187 }
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188
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189 int tmp[] = new int[1];
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190
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191 for (int i = 0; i < Test.ITERATIONS; i++ ) {
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192 if (i == Test.RANGE_CHECK_AT) {
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193 t.forceAbort(new int[0], false);
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194 } else {
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195 boolean isThreshold
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196 = (i == TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD);
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197 boolean isThresholdPlusRange
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198 = (i == TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD
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199 + Test.RANGE_CHECK_AT);
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200 t.forceAbort(tmp, isThreshold || isThresholdPlusRange);
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201 }
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202 }
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203 }
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204 }
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205
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206 public static void main(String args[]) throws Throwable {
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207 new TestRTMAfterNonRTMDeopt().test();
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208 }
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209 }
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210