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annotate truffle/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/FrameTest.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 0d36601f233e
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1 /*
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2 * Copyright (c) 2012, 2013, 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 org.junit.After;
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26 import org.junit.Assert;
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27 import org.junit.Before;
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28 import org.junit.Test;
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29
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30 import com.oracle.truffle.api.CallTarget;
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31 import com.oracle.truffle.api.Truffle;
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32 import com.oracle.truffle.api.TruffleRuntime;
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33 import com.oracle.truffle.api.frame.Frame;
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34 import com.oracle.truffle.api.frame.FrameDescriptor;
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35 import com.oracle.truffle.api.frame.FrameSlot;
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36 import com.oracle.truffle.api.frame.FrameSlotKind;
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37 import com.oracle.truffle.api.frame.FrameSlotTypeException;
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38 import com.oracle.truffle.api.frame.VirtualFrame;
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39 import com.oracle.truffle.api.nodes.Node;
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40 import com.oracle.truffle.api.nodes.RootNode;
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41 import com.oracle.truffle.api.test.utilities.InstrumentationTestMode;
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43 /**
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44 * <h3>Storing Values in Frame Slots</h3>
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45 *
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46 * <p>
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47 * The frame is the preferred data structure for passing values between nodes. It can in particular
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48 * be used for storing the values of local variables of the guest language. The
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49 * {@link FrameDescriptor} represents the current structure of the frame. The method
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50 * {@link FrameDescriptor#addFrameSlot(Object, FrameSlotKind)} can be used to create predefined
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51 * frame slots. The setter and getter methods in the {@link Frame} class can be used to access the
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52 * current value of a particular frame slot. Values can be removed from a frame via the
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53 * {@link FrameDescriptor#removeFrameSlot(Object)} method.
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54 * </p>
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55 *
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56 * <p>
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57 * There are five primitive types for slots available: {@link java.lang.Boolean},
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58 * {@link java.lang.Integer}, {@link java.lang.Long}, {@link java.lang.Float}, and
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59 * {@link java.lang.Double} . It is encouraged to use those types whenever possible. Dynamically
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60 * typed languages can speculate on the type of a value fitting into a primitive (see
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61 * {@link FrameSlotTypeSpecializationTest}). When a frame slot is of one of those particular
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62 * primitive types, its value may only be accessed with the respectively typed getter method (
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63 * {@link Frame#getBoolean}, {@link Frame#getInt}, {@link Frame#getLong}, {@link Frame#getFloat}, or
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64 * {@link Frame#getDouble}) or setter method ({@link Frame#setBoolean}, {@link Frame#setInt},
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65 * {@link Frame#setLong}, {@link Frame#setFloat}, or {@link Frame#setDouble}) in the {@link Frame}
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66 * class.
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67 * </p>
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68 *
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69 * <p>
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70 * The next part of the Truffle API introduction is at
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71 * {@link com.oracle.truffle.api.test.FrameSlotTypeSpecializationTest}.
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72 * </p>
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73 */
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74 public class FrameTest {
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75
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76 @Before
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77 public void before() throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException {
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78 InstrumentationTestMode.set(true);
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79 }
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80
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81 @After
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82 public void after() throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException {
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83 InstrumentationTestMode.set(false);
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84 }
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85
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86 @Test
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87 public void test() throws SecurityException, IllegalArgumentException {
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88 TruffleRuntime runtime = Truffle.getRuntime();
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89 FrameDescriptor frameDescriptor = new FrameDescriptor();
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90 String varName = "localVar";
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91 FrameSlot slot = frameDescriptor.addFrameSlot(varName, FrameSlotKind.Int);
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92 TestRootNode rootNode = new TestRootNode(frameDescriptor, new AssignLocal(slot), new ReadLocal(slot));
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93 CallTarget target = runtime.createCallTarget(rootNode);
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94 Object result = target.call();
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95 Assert.assertEquals(42, result);
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96 frameDescriptor.removeFrameSlot(varName);
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97 boolean slotMissing = false;
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98 try {
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99 result = target.call();
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100 } catch (IllegalArgumentException iae) {
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101 slotMissing = true;
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102 }
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103 Assert.assertTrue(slotMissing);
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104 }
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105
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106 class TestRootNode extends RootNode {
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107
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108 @Child TestChildNode left;
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109 @Child TestChildNode right;
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110
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111 public TestRootNode(FrameDescriptor descriptor, TestChildNode left, TestChildNode right) {
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112 super(TestingLanguage.class, null, descriptor);
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113 this.left = left;
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114 this.right = right;
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115 }
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116
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117 @Override
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118 public Object execute(VirtualFrame frame) {
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119 return left.execute(frame) + right.execute(frame);
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120 }
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121 }
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122
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123 abstract class TestChildNode extends Node {
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124
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125 public TestChildNode() {
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126 super(null);
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127 }
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128
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129 abstract int execute(VirtualFrame frame);
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130 }
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131
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132 abstract class FrameSlotNode extends TestChildNode {
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133
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134 protected final FrameSlot slot;
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135
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136 public FrameSlotNode(FrameSlot slot) {
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137 this.slot = slot;
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138 }
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139 }
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140
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141 class AssignLocal extends FrameSlotNode {
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142
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143 AssignLocal(FrameSlot slot) {
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144 super(slot);
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145 }
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146
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147 @Override
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148 int execute(VirtualFrame frame) {
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149 frame.setInt(slot, 42);
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150 return 0;
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151 }
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152 }
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153
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154 class ReadLocal extends FrameSlotNode {
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155
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156 ReadLocal(FrameSlot slot) {
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157 super(slot);
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158 }
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159
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160 @Override
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161 int execute(VirtualFrame frame) {
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162 try {
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163 return frame.getInt(slot);
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164 } catch (FrameSlotTypeException e) {
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165 throw new IllegalStateException(e);
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166 }
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167 }
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168 }
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169 }