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annotate graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/TruffleRuntimeTest.java @ 16992:5a1d764f6afc

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Truffle: added support for Runtime#getCallTargets()
author Christian Humer <christian.humer@gmail.com>
date Thu, 28 Aug 2014 15:35:29 +0200
parents 5e3d1a68664e
children 7b45e33b7986
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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 static org.junit.Assert.*;
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26
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27 import java.util.*;
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28
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29 import org.junit.*;
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31 import com.oracle.truffle.api.*;
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32 import com.oracle.truffle.api.frame.*;
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33 import com.oracle.truffle.api.nodes.*;
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34 import com.oracle.truffle.api.source.*;
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35
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36 /**
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37 * <h3>Accessing the Truffle Runtime</h3>
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38 *
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39 * <p>
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40 * The Truffle runtime can be accessed at any point in time globally using the static method
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41 * {@link Truffle#getRuntime()}. This method is guaranteed to return a non-null Truffle runtime
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42 * object with an identifying name. A Java Virtual Machine implementation can chose to replace the
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43 * default implementation of the {@link TruffleRuntime} interface with its own implementation for
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44 * providing improved performance.
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45 * </p>
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46 *
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47 * <p>
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48 * The next part of the Truffle API introduction is at
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49 * {@link com.oracle.truffle.api.test.RootNodeTest}.
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50 * </p>
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51 */
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52 public class TruffleRuntimeTest {
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53
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54 private TruffleRuntime runtime;
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55
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56 @Before
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57 public void setup() {
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58 this.runtime = Truffle.getRuntime();
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59 }
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60
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61 private static RootNode createTestRootNode() {
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62 return new RootNode() {
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63 @Override
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64 public Object execute(VirtualFrame frame) {
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65 return 42;
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66 }
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67 };
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68 }
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69
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70 @Test
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71 public void test() {
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72 assertNotNull(runtime);
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73 assertNotNull(runtime.getName());
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74 }
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75
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76 @Test
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77 public void testCreateCallTarget() {
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78 RootNode rootNode = createTestRootNode();
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79 RootCallTarget target = runtime.createCallTarget(rootNode);
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80 assertNotNull(target);
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81 assertEquals(target.call(), 42);
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82 assertSame(rootNode, target.getRootNode());
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83 }
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84
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85 @Test
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86 public void testGetCallTargets1() {
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87 RootNode rootNode = createTestRootNode();
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88 RootCallTarget target = runtime.createCallTarget(rootNode);
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89 assertTrue(runtime.getCallTargets().indexOf(target) != -1);
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90 }
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91
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92 @Test
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93 public void testGetCallTargets2() {
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94 RootNode rootNode = createTestRootNode();
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95 RootCallTarget target1 = runtime.createCallTarget(rootNode);
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96 RootCallTarget target2 = runtime.createCallTarget(rootNode);
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97 assertTrue(runtime.getCallTargets().indexOf(target1) != -1);
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98 assertTrue(runtime.getCallTargets().indexOf(target2) != -1);
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99 }
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100
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101 /*
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102 * This test case documents the use case for profilers and debuggers where they need to access
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103 * multiple call targets for the same source section. This case may happen when the optimization
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104 * system decides to duplicate call targets to achieve better performance.
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105 */
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106 @Test
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107 public void testGetCallTargets3() {
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108 Source source1 = Source.fromText("a\nb\n", "");
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109 SourceSection sourceSection1 = source1.createSection("foo", 1);
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110 SourceSection sourceSection2 = source1.createSection("bar", 2);
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111
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112 RootNode rootNode1 = createTestRootNode();
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113 rootNode1.assignSourceSection(sourceSection1);
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114 RootNode rootNode2 = createTestRootNode();
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115 rootNode2.assignSourceSection(sourceSection2);
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116 RootNode rootNode2Copy = NodeUtil.cloneNode(rootNode2);
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117
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118 assertSame(rootNode2.getSourceSection(), rootNode2Copy.getSourceSection());
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119
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120 RootCallTarget target1 = runtime.createCallTarget(rootNode1);
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121 RootCallTarget target2 = runtime.createCallTarget(rootNode2);
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122 RootCallTarget target2Copy = runtime.createCallTarget(rootNode2Copy);
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123
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124 Map<SourceSection, List<RootCallTarget>> groupedTargets = groupUniqueCallTargets();
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125
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126 List<RootCallTarget> targets1 = groupedTargets.get(sourceSection1);
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127 assertEquals(1, targets1.size());
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128 assertEquals(target1, targets1.get(0));
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129
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130 List<RootCallTarget> targets2 = groupedTargets.get(sourceSection2);
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131 assertEquals(2, targets2.size());
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132 // order of targets2 is not guaranteed
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133 assertTrue(target2 == targets2.get(0) ^ target2Copy == targets2.get(0));
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134 assertTrue(target2 == targets2.get(1) ^ target2Copy == targets2.get(1));
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135 }
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136
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137 private static Map<SourceSection, List<RootCallTarget>> groupUniqueCallTargets() {
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138 Map<SourceSection, List<RootCallTarget>> groupedTargets = new HashMap<>();
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139 for (RootCallTarget target : Truffle.getRuntime().getCallTargets()) {
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140 SourceSection section = target.getRootNode().getSourceSection();
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141 if (section == null) {
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142 // can not identify root node to a unique call target. Print warning?
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143 continue;
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144 }
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145 List<RootCallTarget> targets = groupedTargets.get(section);
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146 if (targets == null) {
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147 targets = new ArrayList<>();
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148 groupedTargets.put(section, targets);
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149 }
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150 targets.add(target);
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151 }
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152 return groupedTargets;
7267
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153 }
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154 }