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annotate truffle/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/MergeSpecializationsTest.java @ 22548:6b76a24fffbd default tip

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author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Thu, 14 Jan 2016 14:20:57 +0100
parents 5309cc9668e3
children
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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.createRoot;
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26 import static com.oracle.truffle.api.dsl.test.TestHelper.executeWith;
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27 import static org.junit.Assert.assertEquals;
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28 import static org.junit.Assert.fail;
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29
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30 import java.util.Arrays;
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31 import java.util.concurrent.CountDownLatch;
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33 import org.junit.Test;
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34
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35 import com.oracle.truffle.api.dsl.Cached;
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36 import com.oracle.truffle.api.dsl.NodeChild;
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37 import com.oracle.truffle.api.dsl.NodeFactory;
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38 import com.oracle.truffle.api.dsl.Specialization;
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39 import com.oracle.truffle.api.dsl.internal.SpecializationNode;
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40 import com.oracle.truffle.api.dsl.internal.SpecializedNode;
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41 import com.oracle.truffle.api.dsl.test.MergeSpecializationsTestFactory.TestCachedNodeFactory;
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42 import com.oracle.truffle.api.dsl.test.MergeSpecializationsTestFactory.TestNodeFactory;
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43 import com.oracle.truffle.api.dsl.test.TypeSystemTest.TestRootNode;
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44 import com.oracle.truffle.api.dsl.test.TypeSystemTest.ValueNode;
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45 import com.oracle.truffle.api.nodes.Node;
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46
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47 public class MergeSpecializationsTest {
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48
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49 private static final int THREADS = 50;
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50
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51 @NodeChild
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52 @SuppressWarnings("unused")
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53 abstract static class TestNode extends ValueNode {
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54
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55 @Specialization
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56 int s1(int a) {
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57 return 1;
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58 }
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59
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60 @Specialization
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61 int s2(long a) {
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62 return 2;
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63 }
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64
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65 @Specialization
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66 int s3(double a) {
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67 return 3;
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68 }
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69 }
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70
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71 @NodeChild
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72 @SuppressWarnings("unused")
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73 abstract static class TestCachedNode extends ValueNode {
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74
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75 @Specialization(guards = "a == cachedA", limit = "3")
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76 int s1(int a, @Cached("a") int cachedA) {
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77 return 1;
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78 }
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79
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80 @Specialization
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81 int s2(long a) {
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82 return 2;
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83 }
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84
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85 @Specialization
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86 int s3(double a) {
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87 return 3;
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88 }
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89 }
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90
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91 @Test
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92 public void testMultithreadedMergeInOrder() {
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93 for (int i = 0; i < 100; i++) {
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94 multithreadedMerge(TestNodeFactory.getInstance(), new Executions(1, 1L << 32, 1.0), 1, 2, 3);
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95 }
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96 }
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97
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98 @Test
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99 public void testMultithreadedMergeReverse() {
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100 for (int i = 0; i < 100; i++) {
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101 multithreadedMerge(TestNodeFactory.getInstance(), new Executions(1.0, 1L << 32, 1), 3, 2, 1);
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102 }
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103 }
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104
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105 @Test
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106 public void testMultithreadedMergeCachedInOrder() {
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107 for (int i = 0; i < 100; i++) {
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108 multithreadedMerge(TestCachedNodeFactory.getInstance(), new Executions(1, 1L << 32, 1.0), 1, 2, 3);
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109 }
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110 }
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111
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112 @Test
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113 public void testMultithreadedMergeCachedTwoEntries() {
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114 for (int i = 0; i < 100; i++) {
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115 multithreadedMerge(TestCachedNodeFactory.getInstance(), new Executions(1, 2, 1.0), 1, 1, 3);
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116 }
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117 }
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118
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119 @Test
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120 public void testMultithreadedMergeCachedThreeEntries() {
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121 for (int i = 0; i < 100; i++) {
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122 multithreadedMerge(TestCachedNodeFactory.getInstance(), new Executions(1, 2, 3), 1, 1, 1);
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123 }
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124 }
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125
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126 private static <T extends ValueNode> void multithreadedMerge(NodeFactory<T> factory, final Executions executions, int... order) {
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127 assertEquals(3, order.length);
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128 final TestRootNode<T> node = createRoot(factory);
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129
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130 final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
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131
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132 final CountDownLatch beforeFirst = new CountDownLatch(1);
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133 final CountDownLatch executedFirst = new CountDownLatch(THREADS);
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134
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135 final CountDownLatch beforeSecond = new CountDownLatch(1);
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136 final CountDownLatch executedSecond = new CountDownLatch(THREADS);
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137
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138 final CountDownLatch beforeThird = new CountDownLatch(1);
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139 final CountDownLatch executedThird = new CountDownLatch(THREADS);
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140
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141 Thread[] threads = new Thread[THREADS];
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142 for (int i = 0; i < threads.length; i++) {
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143 threads[i] = new Thread(new Runnable() {
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144 public void run() {
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145 threadsStarted.countDown();
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146
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147 MergeSpecializationsTest.await(beforeFirst);
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148 executeWith(node, executions.firstValue);
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149 executedFirst.countDown();
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150
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151 MergeSpecializationsTest.await(beforeSecond);
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152 executeWith(node, executions.secondValue);
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153 executedSecond.countDown();
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154
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155 MergeSpecializationsTest.await(beforeThird);
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156 executeWith(node, executions.thirdValue);
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157 executedThird.countDown();
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158 }
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159 });
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160 threads[i].start();
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161 }
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162
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163 final SpecializedNode gen = (SpecializedNode) node.getNode();
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164
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165 final SpecializationNode start0 = gen.getSpecializationNode();
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166 assertEquals("UninitializedNode_", start0.getClass().getSimpleName());
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167
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168 await(threadsStarted);
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169 beforeFirst.countDown();
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170 await(executedFirst);
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171
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172 final SpecializationNode start1 = gen.getSpecializationNode();
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173 assertEquals("S" + order[0] + "Node_", start1.getClass().getSimpleName());
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174 assertEquals("UninitializedNode_", nthChild(1, start1).getClass().getSimpleName());
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175
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176 beforeSecond.countDown();
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177 await(executedSecond);
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178
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179 final SpecializationNode start2 = gen.getSpecializationNode();
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180 Arrays.sort(order, 0, 2);
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181 assertEquals("PolymorphicNode_", start2.getClass().getSimpleName());
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182 assertEquals("S" + order[0] + "Node_", nthChild(1, start2).getClass().getSimpleName());
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183 assertEquals("S" + order[1] + "Node_", nthChild(2, start2).getClass().getSimpleName());
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184 assertEquals("UninitializedNode_", nthChild(3, start2).getClass().getSimpleName());
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185
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186 beforeThird.countDown();
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187 await(executedThird);
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188
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189 final SpecializationNode start3 = gen.getSpecializationNode();
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190 Arrays.sort(order);
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191 assertEquals("PolymorphicNode_", start3.getClass().getSimpleName());
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192 assertEquals("S" + order[0] + "Node_", nthChild(1, start3).getClass().getSimpleName());
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193 assertEquals("S" + order[1] + "Node_", nthChild(2, start3).getClass().getSimpleName());
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194 assertEquals("S" + order[2] + "Node_", nthChild(3, start3).getClass().getSimpleName());
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195 assertEquals("UninitializedNode_", nthChild(4, start3).getClass().getSimpleName());
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196
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197 for (Thread thread : threads) {
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198 try {
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199 thread.join();
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200 } catch (InterruptedException e) {
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201 fail("interrupted");
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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 private static class Executions {
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207 public final Object firstValue;
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208 public final Object secondValue;
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209 public final Object thirdValue;
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210
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211 public Executions(Object firstValue, Object secondValue, Object thirdValue) {
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212 this.firstValue = firstValue;
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213 this.secondValue = secondValue;
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214 this.thirdValue = thirdValue;
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215 }
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216 }
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217
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218 private static void await(final CountDownLatch latch) {
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219 try {
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220 latch.await();
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221 } catch (InterruptedException e) {
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222 fail("interrupted");
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223 }
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224 }
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225
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226 private static Node firstChild(Node node) {
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227 return node.getChildren().iterator().next();
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228 }
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229
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230 private static Node nthChild(int n, Node node) {
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231 if (n == 0) {
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232 return node;
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233 } else {
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234 return nthChild(n - 1, firstChild(node));
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235 }
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236 }
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237 }