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annotate truffle/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/TruffleRuntimeTest.java @ 22241:14e6dfb1ef05

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Truffle/Testing: massive rework of tests to accommodate recent instrumentation change with respect to "applyInstrumentation" - Caused by lack of a "vm" known to the Accessor during most testing, making the Instrumenter unavailable, which is now required to create a CallTarget - Modified the Instrumenter/Accessor with a static field that can be reflectively "poked" with a vm value for testing - Create a pair of methods to globally enable/disable testing mode to modify that static field and restore it when tests complete.
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Tue, 22 Sep 2015 20:31:19 -0700
parents dc83cc1f94f2
children 0fb3522e5b72
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1 /*
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2 * Copyright (c) 2012, 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.test;
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24
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25 import com.oracle.truffle.api.RootCallTarget;
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26 import com.oracle.truffle.api.Truffle;
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27 import com.oracle.truffle.api.TruffleRuntime;
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28 import com.oracle.truffle.api.frame.VirtualFrame;
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29 import com.oracle.truffle.api.nodes.NodeUtil;
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30 import com.oracle.truffle.api.nodes.RootNode;
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31 import com.oracle.truffle.api.source.Source;
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32 import com.oracle.truffle.api.source.SourceSection;
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33 import com.oracle.truffle.api.test.utilities.InstrumentationTestMode;
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34
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35 import java.util.ArrayList;
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36 import java.util.HashMap;
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37 import java.util.List;
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38 import java.util.Map;
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39
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40 import static org.junit.Assert.assertEquals;
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41 import static org.junit.Assert.assertNotNull;
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42 import static org.junit.Assert.assertSame;
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43 import static org.junit.Assert.assertTrue;
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44 import static org.junit.Assert.fail;
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45
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46 import org.junit.After;
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47 import org.junit.Before;
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48 import org.junit.Test;
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49
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50 /**
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51 * <h3>Accessing the Truffle Runtime</h3>
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52 *
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53 * <p>
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54 * The Truffle runtime can be accessed at any point in time globally using the static method
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55 * {@link Truffle#getRuntime()}. This method is guaranteed to return a non-null Truffle runtime
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56 * object with an identifying name. A Java Virtual Machine implementation can chose to replace the
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57 * default implementation of the {@link TruffleRuntime} interface with its own implementation for
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58 * providing improved performance.
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59 * </p>
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60 *
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61 * <p>
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62 * The next part of the Truffle API introduction is at
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63 * {@link com.oracle.truffle.api.test.RootNodeTest}.
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64 * </p>
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65 */
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66 public class TruffleRuntimeTest {
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67
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68 private TruffleRuntime runtime;
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69
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70 @Before
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71 public void before() throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException {
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72 InstrumentationTestMode.set(true);
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73 this.runtime = Truffle.getRuntime();
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74 }
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75
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76 @After
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77 public void after() throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException {
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78 InstrumentationTestMode.set(false);
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79 }
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80
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81 private static RootNode createTestRootNode() {
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82 return new RootNode(TestingLanguage.class, null, null) {
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83 @Override
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84 public Object execute(VirtualFrame frame) {
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85 return 42;
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86 }
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87 };
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88 }
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89
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90 // @Test
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91 public void verifyTheRealRuntimeIsUsedOnRealGraal() {
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92 TruffleRuntime r = Truffle.getRuntime();
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93 final String name = r.getClass().getName();
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94 if (name.endsWith("DefaultTruffleRuntime")) {
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95 fail("Wrong name " + name + " with following System.getProperties:\n" + System.getProperties().toString());
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96 }
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97 }
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98
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99 @Test
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100 public void test() {
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101 assertNotNull(runtime);
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102 assertNotNull(runtime.getName());
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103 }
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104
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105 @Test
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106 public void testCreateCallTarget() {
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107 RootNode rootNode = createTestRootNode();
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108 RootCallTarget target = runtime.createCallTarget(rootNode);
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109 assertNotNull(target);
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110 assertEquals(target.call(), 42);
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111 assertSame(rootNode, target.getRootNode());
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112 }
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113
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114 @Test
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115 public void testGetCallTargets1() {
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116 RootNode rootNode = createTestRootNode();
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117 RootCallTarget target = runtime.createCallTarget(rootNode);
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118 assertTrue(runtime.getCallTargets().contains(target));
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119 }
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120
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121 @Test
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122 public void testGetCallTargets2() {
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123 RootNode rootNode = createTestRootNode();
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124 RootCallTarget target1 = runtime.createCallTarget(rootNode);
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125 RootCallTarget target2 = runtime.createCallTarget(rootNode);
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126 assertTrue(runtime.getCallTargets().contains(target1));
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127 assertTrue(runtime.getCallTargets().contains(target2));
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128 }
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129
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130 /*
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131 * This test case documents the use case for profilers and debuggers where they need to access
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132 * multiple call targets for the same source section. This case may happen when the optimization
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133 * system decides to duplicate call targets to achieve better performance.
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134 */
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135 @Test
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136 public void testGetCallTargets3() {
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137 Source source1 = Source.fromText("a\nb\n", "");
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138 SourceSection sourceSection1 = source1.createSection("foo", 1);
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139 SourceSection sourceSection2 = source1.createSection("bar", 2);
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140
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141 RootNode rootNode1 = createTestRootNode();
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142 rootNode1.assignSourceSection(sourceSection1);
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143 RootNode rootNode2 = createTestRootNode();
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144 rootNode2.assignSourceSection(sourceSection2);
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145 RootNode rootNode2Copy = NodeUtil.cloneNode(rootNode2);
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146
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147 assertSame(rootNode2.getSourceSection(), rootNode2Copy.getSourceSection());
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148
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149 RootCallTarget target1 = runtime.createCallTarget(rootNode1);
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150 RootCallTarget target2 = runtime.createCallTarget(rootNode2);
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151 RootCallTarget target2Copy = runtime.createCallTarget(rootNode2Copy);
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152
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153 Map<SourceSection, List<RootCallTarget>> groupedTargets = groupUniqueCallTargets();
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154
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155 List<RootCallTarget> targets1 = groupedTargets.get(sourceSection1);
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156 assertEquals(1, targets1.size());
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157 assertEquals(target1, targets1.get(0));
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158
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159 List<RootCallTarget> targets2 = groupedTargets.get(sourceSection2);
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160 assertEquals(2, targets2.size());
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161 // order of targets2 is not guaranteed
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162 assertTrue(target2 == targets2.get(0) ^ target2Copy == targets2.get(0));
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163 assertTrue(target2 == targets2.get(1) ^ target2Copy == targets2.get(1));
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164 }
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165
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166 private static Map<SourceSection, List<RootCallTarget>> groupUniqueCallTargets() {
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167 Map<SourceSection, List<RootCallTarget>> groupedTargets = new HashMap<>();
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168 for (RootCallTarget target : Truffle.getRuntime().getCallTargets()) {
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169 SourceSection section = target.getRootNode().getSourceSection();
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170 if (section == null) {
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171 // can not identify root node to a unique call target. Print warning?
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172 continue;
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173 }
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174 List<RootCallTarget> targets = groupedTargets.get(section);
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175 if (targets == null) {
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176 targets = new ArrayList<>();
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177 groupedTargets.put(section, targets);
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178 }
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179 targets.add(target);
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180 }
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181 return groupedTargets;
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182 }
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183 }