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annotate graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/MergeSpecializationsTest.java @ 19757:e8d2f3f95dcd

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Truffle-DSL: implemented duplication check for specializations with @Cached to avoid duplicates for multithreaded AST execution.
author Christian Humer <christian.humer@gmail.com>
date Tue, 10 Mar 2015 19:28:26 +0100
parents 678a3de139ad
children e773cc48d3e8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
19702
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1 /*
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2 * Copyright (c) 2015, 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 package com.oracle.truffle.api.dsl.test;
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24
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25 import static com.oracle.truffle.api.dsl.test.TestHelper.*;
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26 import static org.junit.Assert.*;
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27
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28 import java.util.*;
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29 import java.util.concurrent.*;
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30
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31 import org.junit.*;
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32
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33 import com.oracle.truffle.api.dsl.*;
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34 import com.oracle.truffle.api.dsl.internal.*;
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35 import com.oracle.truffle.api.dsl.test.MergeSpecializationsTestFactory.TestCachedNodeFactory;
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36 import com.oracle.truffle.api.dsl.test.MergeSpecializationsTestFactory.TestNodeFactory;
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37 import com.oracle.truffle.api.dsl.test.TypeSystemTest.TestRootNode;
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38 import com.oracle.truffle.api.dsl.test.TypeSystemTest.ValueNode;
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39 import com.oracle.truffle.api.nodes.*;
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40
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41 public class MergeSpecializationsTest {
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42
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e8d2f3f95dcd Truffle-DSL: implemented duplication check for specializations with @Cached to avoid duplicates for multithreaded AST execution.
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43 private static final int THREADS = 50;
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44
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45 @NodeChild
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46 @SuppressWarnings("unused")
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47 abstract static class TestNode extends ValueNode {
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48
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49 @Specialization
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50 int s1(int a) {
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51 return 1;
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52 }
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53
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54 @Specialization
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55 int s2(long a) {
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56 return 2;
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57 }
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58
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59 @Specialization
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60 int s3(double a) {
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61 return 3;
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62 }
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63 }
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64
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65 @NodeChild
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66 @SuppressWarnings("unused")
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67 abstract static class TestCachedNode extends ValueNode {
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68
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69 @Specialization(guards = "a == cachedA", limit = "3")
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70 int s1(int a, @Cached("a") int cachedA) {
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71 return 1;
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72 }
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73
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74 @Specialization
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75 int s2(long a) {
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76 return 2;
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77 }
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78
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79 @Specialization
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80 int s3(double a) {
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81 return 3;
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82 }
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83 }
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84
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85 @Test
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86 public void testMultithreadedMergeInOrder() {
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87 multithreadedMerge(TestNodeFactory.getInstance(), new Executions(1, 1L << 32, 1.0), 1, 2, 3);
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88 }
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89
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90 @Test
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91 public void testMultithreadedMergeReverse() {
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92 multithreadedMerge(TestNodeFactory.getInstance(), new Executions(1.0, 1L << 32, 1), 3, 2, 1);
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93 }
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94
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95 @Test
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96 public void testMultithreadedMergeCachedInOrder() {
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97 multithreadedMerge(TestCachedNodeFactory.getInstance(), new Executions(1, 1L << 32, 1.0), 1, 2, 3);
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98 }
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99
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100 @Test
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101 public void testMultithreadedMergeCachedTwoEntries() {
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102 multithreadedMerge(TestCachedNodeFactory.getInstance(), new Executions(1, 2, 1.0), 1, 1, 3);
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103 }
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104
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105 @Test
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106 public void testMultithreadedMergeCachedThreeEntries() {
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107 multithreadedMerge(TestCachedNodeFactory.getInstance(), new Executions(1, 2, 3), 1, 1, 1);
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108 }
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109
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110 private static <T extends ValueNode> void multithreadedMerge(NodeFactory<T> factory, final Executions executions, int... order) {
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111 assertEquals(3, order.length);
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112 final TestRootNode<T> node = createRoot(factory);
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113
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114 final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
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115
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116 final CountDownLatch beforeFirst = new CountDownLatch(1);
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117 final CountDownLatch executedFirst = new CountDownLatch(THREADS);
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118
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119 final CountDownLatch beforeSecond = new CountDownLatch(1);
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120 final CountDownLatch executedSecond = new CountDownLatch(THREADS);
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121
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122 final CountDownLatch beforeThird = new CountDownLatch(1);
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123 final CountDownLatch executedThird = new CountDownLatch(THREADS);
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124
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125 Thread[] threads = new Thread[THREADS];
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126 for (int i = 0; i < threads.length; i++) {
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127 threads[i] = new Thread(new Runnable() {
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128 public void run() {
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129 threadsStarted.countDown();
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130
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131 MergeSpecializationsTest.await(beforeFirst);
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132 executeWith(node, executions.firstValue);
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133 executedFirst.countDown();
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134
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135 MergeSpecializationsTest.await(beforeSecond);
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136 executeWith(node, executions.secondValue);
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137 executedSecond.countDown();
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138
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139 MergeSpecializationsTest.await(beforeThird);
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140 executeWith(node, executions.thirdValue);
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141 executedThird.countDown();
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142 }
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143 });
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144 threads[i].start();
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145 }
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146
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147 final SpecializedNode gen = (SpecializedNode) node.getNode();
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148
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149 final SpecializationNode start0 = gen.getSpecializationNode();
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150 assertEquals("UninitializedNode_", start0.getClass().getSimpleName());
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151
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152 await(threadsStarted);
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153 beforeFirst.countDown();
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154 await(executedFirst);
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155
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156 final SpecializationNode start1 = gen.getSpecializationNode();
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157 assertEquals("S" + order[0] + "Node_", start1.getClass().getSimpleName());
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158 assertEquals("UninitializedNode_", nthChild(1, start1).getClass().getSimpleName());
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159
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160 beforeSecond.countDown();
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161 await(executedSecond);
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162
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163 final SpecializationNode start2 = gen.getSpecializationNode();
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164 Arrays.sort(order, 0, 2);
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165 assertEquals("PolymorphicNode_", start2.getClass().getSimpleName());
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166 assertEquals("S" + order[0] + "Node_", nthChild(1, start2).getClass().getSimpleName());
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167 assertEquals("S" + order[1] + "Node_", nthChild(2, start2).getClass().getSimpleName());
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168 assertEquals("UninitializedNode_", nthChild(3, start2).getClass().getSimpleName());
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169
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170 beforeThird.countDown();
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171 await(executedThird);
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172
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173 final SpecializationNode start3 = gen.getSpecializationNode();
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174 Arrays.sort(order);
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175 assertEquals("PolymorphicNode_", start3.getClass().getSimpleName());
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176 assertEquals("S" + order[0] + "Node_", nthChild(1, start3).getClass().getSimpleName());
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177 assertEquals("S" + order[1] + "Node_", nthChild(2, start3).getClass().getSimpleName());
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178 assertEquals("S" + order[2] + "Node_", nthChild(3, start3).getClass().getSimpleName());
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179 assertEquals("UninitializedNode_", nthChild(4, start3).getClass().getSimpleName());
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180
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181 for (Thread thread : threads) {
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182 try {
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183 thread.join();
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184 } catch (InterruptedException e) {
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185 fail("interrupted");
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186 }
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187 }
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188 }
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189
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190 private static class Executions {
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191 public final Object firstValue;
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192 public final Object secondValue;
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193 public final Object thirdValue;
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194
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195 public Executions(Object firstValue, Object secondValue, Object thirdValue) {
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196 this.firstValue = firstValue;
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197 this.secondValue = secondValue;
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198 this.thirdValue = thirdValue;
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199 }
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200 }
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201
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202 private static void await(final CountDownLatch latch) {
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203 try {
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204 latch.await();
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205 } catch (InterruptedException e) {
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206 fail("interrupted");
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207 }
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208 }
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209
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210 private static Node firstChild(Node node) {
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211 return node.getChildren().iterator().next();
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212 }
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213
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214 private static Node nthChild(int n, Node node) {
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215 if (n == 0) {
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216 return node;
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217 } else {
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218 return nthChild(n - 1, firstChild(node));
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219 }
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220 }
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221 }