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annotate graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/TruffleRuntimeTest.java @ 21939:e24237684856

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Few more tweaks to help us pass the gate
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Fri, 12 Jun 2015 18:00:02 +0200
parents 0a6e10379b9b
children
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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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30
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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 verifyTheRealRuntimeIsUsedOnRealGraal() {
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72 TruffleRuntime r = Truffle.getRuntime();
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73 final String name = r.getClass().getName();
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74 if (name.endsWith("DefaultTruffleRuntime")) {
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75 fail("Wrong name " + name + " with following System.getProperties:\n" + System.getProperties().toString());
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76 }
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77 }
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78
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79 @Test
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80 public void test() {
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81 assertNotNull(runtime);
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82 assertNotNull(runtime.getName());
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83 }
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84
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85 @Test
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86 public void testCreateCallTarget() {
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87 RootNode rootNode = createTestRootNode();
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88 RootCallTarget target = runtime.createCallTarget(rootNode);
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89 assertNotNull(target);
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90 assertEquals(target.call(), 42);
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91 assertSame(rootNode, target.getRootNode());
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92 }
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93
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94 @Test
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95 public void testGetCallTargets1() {
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96 RootNode rootNode = createTestRootNode();
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97 RootCallTarget target = runtime.createCallTarget(rootNode);
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98 assertTrue(runtime.getCallTargets().contains(target));
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99 }
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100
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101 @Test
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102 public void testGetCallTargets2() {
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103 RootNode rootNode = createTestRootNode();
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104 RootCallTarget target1 = runtime.createCallTarget(rootNode);
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105 RootCallTarget target2 = runtime.createCallTarget(rootNode);
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106 assertTrue(runtime.getCallTargets().contains(target1));
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107 assertTrue(runtime.getCallTargets().contains(target2));
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108 }
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109
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110 /*
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111 * This test case documents the use case for profilers and debuggers where they need to access
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112 * multiple call targets for the same source section. This case may happen when the optimization
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113 * system decides to duplicate call targets to achieve better performance.
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114 */
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115 @Test
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116 public void testGetCallTargets3() {
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117 Source source1 = Source.fromText("a\nb\n", "");
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118 SourceSection sourceSection1 = source1.createSection("foo", 1);
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119 SourceSection sourceSection2 = source1.createSection("bar", 2);
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120
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121 RootNode rootNode1 = createTestRootNode();
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122 rootNode1.assignSourceSection(sourceSection1);
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123 RootNode rootNode2 = createTestRootNode();
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124 rootNode2.assignSourceSection(sourceSection2);
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125 RootNode rootNode2Copy = NodeUtil.cloneNode(rootNode2);
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126
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127 assertSame(rootNode2.getSourceSection(), rootNode2Copy.getSourceSection());
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128
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129 RootCallTarget target1 = runtime.createCallTarget(rootNode1);
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130 RootCallTarget target2 = runtime.createCallTarget(rootNode2);
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131 RootCallTarget target2Copy = runtime.createCallTarget(rootNode2Copy);
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132
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133 Map<SourceSection, List<RootCallTarget>> groupedTargets = groupUniqueCallTargets();
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134
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135 List<RootCallTarget> targets1 = groupedTargets.get(sourceSection1);
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136 assertEquals(1, targets1.size());
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137 assertEquals(target1, targets1.get(0));
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138
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139 List<RootCallTarget> targets2 = groupedTargets.get(sourceSection2);
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140 assertEquals(2, targets2.size());
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141 // order of targets2 is not guaranteed
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142 assertTrue(target2 == targets2.get(0) ^ target2Copy == targets2.get(0));
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143 assertTrue(target2 == targets2.get(1) ^ target2Copy == targets2.get(1));
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144 }
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145
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146 private static Map<SourceSection, List<RootCallTarget>> groupUniqueCallTargets() {
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147 Map<SourceSection, List<RootCallTarget>> groupedTargets = new HashMap<>();
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148 for (RootCallTarget target : Truffle.getRuntime().getCallTargets()) {
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149 SourceSection section = target.getRootNode().getSourceSection();
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150 if (section == null) {
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151 // can not identify root node to a unique call target. Print warning?
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152 continue;
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153 }
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154 List<RootCallTarget> targets = groupedTargets.get(section);
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155 if (targets == null) {
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156 targets = new ArrayList<>();
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157 groupedTargets.put(section, targets);
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158 }
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159 targets.add(target);
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160 }
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161 return groupedTargets;
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a4b84ba6dc2e Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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162 }
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163 }