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annotate truffle/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/FrameTest.java @ 22003:5bc7f7b867ab

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Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Sat, 18 Jul 2015 18:03:36 +0200
parents 9c8c0937da41
children dc83cc1f94f2
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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
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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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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25 import org.junit.*;
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27 import com.oracle.truffle.api.*;
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28 import com.oracle.truffle.api.frame.*;
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29 import com.oracle.truffle.api.nodes.*;
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31 /**
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32 * <h3>Storing Values in Frame Slots</h3>
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33 *
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34 * <p>
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35 * The frame is the preferred data structure for passing values between nodes. It can in particular
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36 * be used for storing the values of local variables of the guest language. The
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37 * {@link FrameDescriptor} represents the current structure of the frame. The method
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38 * {@link FrameDescriptor#addFrameSlot(Object, FrameSlotKind)} can be used to create predefined
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39 * frame slots. The setter and getter methods in the {@link Frame} class can be used to access the
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40 * current value of a particular frame slot. Values can be removed from a frame via the
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41 * {@link FrameDescriptor#removeFrameSlot(Object)} method.
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42 * </p>
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43 *
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44 * <p>
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45 * There are five primitive types for slots available: {@link java.lang.Boolean},
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46 * {@link java.lang.Integer}, {@link java.lang.Long}, {@link java.lang.Float}, and
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47 * {@link java.lang.Double} . It is encouraged to use those types whenever possible. Dynamically
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48 * typed languages can speculate on the type of a value fitting into a primitive (see
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49 * {@link FrameSlotTypeSpecializationTest}). When a frame slot is of one of those particular
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50 * primitive types, its value may only be accessed with the respectively typed getter method (
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51 * {@link Frame#getBoolean}, {@link Frame#getInt}, {@link Frame#getLong}, {@link Frame#getFloat}, or
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52 * {@link Frame#getDouble}) or setter method ({@link Frame#setBoolean}, {@link Frame#setInt},
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53 * {@link Frame#setLong}, {@link Frame#setFloat}, or {@link Frame#setDouble}) in the {@link Frame}
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54 * class.
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55 * </p>
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56 *
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57 * <p>
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58 * The next part of the Truffle API introduction is at
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59 * {@link com.oracle.truffle.api.test.FrameSlotTypeSpecializationTest}.
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60 * </p>
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61 */
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62 public class FrameTest {
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63
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64 @Test
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65 public void test() {
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66 TruffleRuntime runtime = Truffle.getRuntime();
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67 FrameDescriptor frameDescriptor = new FrameDescriptor();
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68 String varName = "localVar";
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69 FrameSlot slot = frameDescriptor.addFrameSlot(varName, FrameSlotKind.Int);
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70 TestRootNode rootNode = new TestRootNode(frameDescriptor, new AssignLocal(slot), new ReadLocal(slot));
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71 CallTarget target = runtime.createCallTarget(rootNode);
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72 Object result = target.call();
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73 Assert.assertEquals(42, result);
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74 frameDescriptor.removeFrameSlot(varName);
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75 boolean slotMissing = false;
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76 try {
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77 result = target.call();
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78 } catch (IllegalArgumentException iae) {
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79 slotMissing = true;
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80 }
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81 Assert.assertTrue(slotMissing);
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82 }
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83
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84 class TestRootNode extends RootNode {
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86 @Child TestChildNode left;
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87 @Child TestChildNode right;
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88
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89 public TestRootNode(FrameDescriptor descriptor, TestChildNode left, TestChildNode right) {
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90 super(TestingLanguage.class, null, descriptor);
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91 this.left = left;
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92 this.right = right;
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93 }
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94
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95 @Override
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96 public Object execute(VirtualFrame frame) {
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97 return left.execute(frame) + right.execute(frame);
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98 }
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99 }
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101 abstract class TestChildNode extends Node {
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102
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103 public TestChildNode() {
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104 super(null);
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105 }
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106
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107 abstract int execute(VirtualFrame frame);
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108 }
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109
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110 abstract class FrameSlotNode extends TestChildNode {
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111
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112 protected final FrameSlot slot;
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113
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114 public FrameSlotNode(FrameSlot slot) {
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115 this.slot = slot;
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116 }
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117 }
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119 class AssignLocal extends FrameSlotNode {
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120
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121 AssignLocal(FrameSlot slot) {
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122 super(slot);
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123 }
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125 @Override
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126 int execute(VirtualFrame frame) {
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127 frame.setInt(slot, 42);
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128 return 0;
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129 }
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130 }
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132 class ReadLocal extends FrameSlotNode {
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133
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134 ReadLocal(FrameSlot slot) {
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135 super(slot);
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136 }
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138 @Override
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139 int execute(VirtualFrame frame) {
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140 try {
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141 return frame.getInt(slot);
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142 } catch (FrameSlotTypeException e) {
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143 throw new IllegalStateException(e);
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144 }
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147 }