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annotate test/compiler/rtm/locking/TestRTMAbortRatio.java @ 19706:dc7189b2bb5f

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author Benoit Daloze <benoit.daloze@jku.at>
date Mon, 09 Mar 2015 14:22:15 +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 RTMAbortRatio affects amount of aborts before
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29 * deoptimization.
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30 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
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31 * @build TestRTMAbortRatio
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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 TestRTMAbortRatio
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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 method will be deoptimized on high abort ratio
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48 * as soon as abort ratio reaches RTMAbortRatio's value.
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49 */
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50 public class TestRTMAbortRatio extends CommandLineOptionTest {
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51 private TestRTMAbortRatio() {
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52 super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
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53 }
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54
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55 @Override
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56 protected void runTestCases() throws Throwable {
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57 verifyAbortRatio(0, false);
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58 verifyAbortRatio(10, false);
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59 verifyAbortRatio(50, false);
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60 verifyAbortRatio(100, false);
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61
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62 verifyAbortRatio(0, true);
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63 verifyAbortRatio(10, true);
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64 verifyAbortRatio(50, true);
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65 verifyAbortRatio(100, true);
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66 }
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67
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68 private void verifyAbortRatio(int abortRatio, boolean useStackLock)
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69 throws Throwable {
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70 CompilableTest test = new Test();
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71
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72 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
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73 test,
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74 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
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75 useStackLock),
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76 "-XX:+UseRTMDeopt",
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77 "-XX:RTMTotalCountIncrRate=1",
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78 "-XX:RTMAbortThreshold=0",
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79 CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold",
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80 10 * Test.TOTAL_ITERATIONS),
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81 CommandLineOptionTest.prepareNumericFlag("RTMAbortRatio",
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82 abortRatio),
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83 "-XX:+PrintPreciseRTMLockingStatistics",
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84 test.getClass().getName(),
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85 Boolean.toString(!useStackLock));
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86
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87 outputAnalyzer.shouldHaveExitValue(0);
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88
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89 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
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90 test.getMethodWithLockName(), outputAnalyzer.getOutput());
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91
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92 Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
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93 + "exactly one RTM locking statistics entry.");
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94
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95 RTMLockingStatistics lock = statistics.get(0);
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96 int actualRatio;
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97
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98 if (lock.getTotalAborts() == 1L) {
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99 actualRatio = 0;
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100 } else {
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101 actualRatio = (int) (lock.getTotalLocks()
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102 / (lock.getTotalAborts() - 1L));
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103 }
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104
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105 Asserts.assertLTE(actualRatio, abortRatio, String.format(
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106 "Actual abort ratio (%d) should lower or equal to "
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107 + "specified (%d).", actualRatio, abortRatio));
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108 }
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109
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110 /**
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111 * Force abort after {@code Test.WARMUP_ITERATIONS} is done.
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112 */
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113 public static class Test implements CompilableTest {
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114 private static final int TOTAL_ITERATIONS = 10000;
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115 private static final int WARMUP_ITERATIONS = 1000;
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116 private static final Unsafe UNSAFE = Utils.getUnsafe();
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117 private final Object monitor = new Object();
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118 // Following field have to be static in order to avoid escape analysis.
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119 @SuppressWarnings("UnsuedDeclaration")
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120 private static int field = 0;
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121
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122 @Override
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123 public String getMethodWithLockName() {
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124 return this.getClass().getName() + "::lock";
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125 }
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126
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127 @Override
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128 public String[] getMethodsToCompileNames() {
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129 return new String[] {
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130 getMethodWithLockName(),
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131 Unsafe.class.getName() + "::addressSize"
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132 };
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133 }
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134
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135 public void lock(boolean abort) {
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136 synchronized(monitor) {
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137 if (abort) {
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138 Test.UNSAFE.addressSize();
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139 }
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140 }
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141 }
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142
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143 /**
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144 * Usage:
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145 * Test &lt;inflate monitor&gt;
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146 */
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147 public static void main(String args[]) throws Throwable {
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148 Asserts.assertGTE(args.length, 1, "One argument required.");
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149 Test t = new Test();
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150 if (Boolean.valueOf(args[0])) {
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151 AbortProvoker.inflateMonitor(t.monitor);
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152 }
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153 for (int i = 0; i < Test.TOTAL_ITERATIONS; i++) {
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154 t.lock(i >= Test.WARMUP_ITERATIONS);
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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 public static void main(String args[]) throws Throwable {
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160 new TestRTMAbortRatio().test();
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161 }
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162 }
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163