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annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/Node.java @ 22157:dc83cc1f94f2

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Using fully qualified imports
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 16 Sep 2015 11:33:22 +0200
parents 65e9fbb40e51
children 5d2a12c9aae1 1c0f490984d5
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1 /*
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2 * Copyright (c) 2012, 2015, 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. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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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13 * 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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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api.nodes;
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26
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27 import com.oracle.truffle.api.CallTarget;
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28 import com.oracle.truffle.api.CompilerAsserts;
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29 import com.oracle.truffle.api.CompilerDirectives;
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30 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
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31 import com.oracle.truffle.api.ReplaceObserver;
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32 import com.oracle.truffle.api.TruffleLanguage;
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33 import com.oracle.truffle.api.TruffleOptions;
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34 import com.oracle.truffle.api.impl.Accessor;
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35 import com.oracle.truffle.api.instrument.Instrument;
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36 import com.oracle.truffle.api.instrument.Probe;
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37 import com.oracle.truffle.api.instrument.ProbeException;
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38 import com.oracle.truffle.api.instrument.ProbeFailure;
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39 import com.oracle.truffle.api.instrument.ProbeNode;
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40 import com.oracle.truffle.api.instrument.ProbeNode.WrapperNode;
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41 import com.oracle.truffle.api.source.SourceSection;
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42 import com.oracle.truffle.api.utilities.JSONHelper;
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43 import java.lang.annotation.ElementType;
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44 import java.lang.annotation.Retention;
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45 import java.lang.annotation.RetentionPolicy;
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46 import java.lang.annotation.Target;
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47 import java.util.HashMap;
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48 import java.util.Iterator;
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49 import java.util.Map;
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50 import java.util.concurrent.Callable;
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51
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52 /**
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53 * Abstract base class for all Truffle nodes.
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54 */
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55 public abstract class Node implements NodeInterface, Cloneable {
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56 private final NodeClass nodeClass;
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57 @CompilationFinal private Node parent;
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58 @CompilationFinal private SourceSection sourceSection;
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59
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60 /**
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61 * Marks array fields that are children of this node.
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62 */
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63 @Retention(RetentionPolicy.RUNTIME)
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64 @Target({ElementType.FIELD})
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65 public @interface Children {
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66 }
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67
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68 /**
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69 * Marks fields that represent child nodes of this node.
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70 */
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71 @Retention(RetentionPolicy.RUNTIME)
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72 @Target({ElementType.FIELD})
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73 public @interface Child {
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74 }
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75
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76 protected Node() {
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77 this(null);
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78 }
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79
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80 protected Node(SourceSection sourceSection) {
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81 CompilerAsserts.neverPartOfCompilation();
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82 this.sourceSection = sourceSection;
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83 this.nodeClass = NodeClass.get(getClass());
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84 if (TruffleOptions.TraceASTJSON) {
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85 JSONHelper.dumpNewNode(this);
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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 * Assigns a link to a guest language source section to this node.
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91 *
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92 * @param section the object representing a section in guest language source code
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93 */
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94 public void assignSourceSection(SourceSection section) {
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95 if (sourceSection != null) {
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96 // Patch this test during the transition to constructor-based
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97 // source attribution, which would otherwise trigger this
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98 // exception. This method will eventually be deprecated.
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99 if (getSourceSection() != section) {
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100 throw new IllegalStateException("Source section is already assigned. Old: " + getSourceSection() + ", new: " + section);
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101 }
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102 }
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103 this.sourceSection = section;
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104 }
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105
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106 NodeClass getNodeClass() {
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107 return nodeClass;
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108 }
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109
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110 /**
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111 * Returns a rough estimate for the cost of this {@link Node}. This estimate can be used by
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112 * runtime systems or guest languages to implement heuristics based on Truffle ASTs. This method
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113 * is intended to be overridden by subclasses. The default implementation returns the value of
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114 * {@link NodeInfo#cost()} of the {@link NodeInfo} annotation declared at the subclass. If no
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115 * {@link NodeInfo} annotation is declared the method returns {@link NodeCost#MONOMORPHIC} as a
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116 * default value.
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117 */
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118 public NodeCost getCost() {
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119 NodeInfo info = getClass().getAnnotation(NodeInfo.class);
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120 if (info != null) {
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121 return info.cost();
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122 }
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123 return NodeCost.MONOMORPHIC;
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124 }
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125
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126 /**
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127 * Clears any previously assigned guest language source code from this node.
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128 */
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129 public void clearSourceSection() {
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130 this.sourceSection = null;
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131 }
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132
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133 /**
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134 * Retrieves the segment of guest language source code that is represented by this Node.
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135 *
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136 * @return the source code represented by this Node
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137 */
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138 public SourceSection getSourceSection() {
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139 return sourceSection;
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140 }
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141
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142 /**
21117
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143 * Retrieves the segment of guest language source code that is represented by this Node, if
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144 * present; otherwise retrieves the segment represented by the nearest AST ancestor that has
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diff changeset
145 * this information.
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146 *
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147 * @return an approximation of the source code represented by this Node
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148 */
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149 @ExplodeLoop
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150 public SourceSection getEncapsulatingSourceSection() {
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diff changeset
151 Node current = this;
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152 while (current != null) {
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153 if (current.sourceSection != null) {
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154 return current.sourceSection;
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155 }
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156 current = current.parent;
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157 }
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158 return null;
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159 }
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160
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161 /**
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162 * Method that updates the link to the parent in the array of specified new child nodes to this
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163 * node.
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164 *
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165 * @param newChildren the array of new children whose parent should be updated
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166 * @return the array of new children
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167 */
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168 protected final <T extends Node> T[] insert(final T[] newChildren) {
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169 CompilerDirectives.transferToInterpreterAndInvalidate();
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170 assert newChildren != null;
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171 for (Node newChild : newChildren) {
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172 adoptHelper(newChild);
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173 }
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174 return newChildren;
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175 }
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176
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177 /**
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178 * Method that updates the link to the parent in the specified new child node to this node.
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179 *
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180 * @param newChild the new child whose parent should be updated
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181 * @return the new child
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182 */
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183 protected final <T extends Node> T insert(final T newChild) {
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184 CompilerDirectives.transferToInterpreterAndInvalidate();
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185 assert newChild != null;
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186 adoptHelper(newChild);
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187 return newChild;
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188 }
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189
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190 public final void adoptChildren() {
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191 CompilerDirectives.transferToInterpreterAndInvalidate();
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192 adoptHelper();
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193 }
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194
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195 void adoptHelper(final Node newChild) {
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196 assert newChild != null;
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197 if (newChild == this) {
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198 throw new IllegalStateException("The parent of a node can never be the node itself.");
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199 }
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200 newChild.parent = this;
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201 if (TruffleOptions.TraceASTJSON) {
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202 JSONHelper.dumpNewChild(this, newChild);
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203 }
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204 newChild.adoptHelper();
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205 }
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206
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207 private void adoptHelper() {
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208 Iterable<Node> children = this.getChildren();
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209 for (Node child : children) {
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diff changeset
210 if (child != null && child.getParent() != this) {
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diff changeset
211 this.adoptHelper(child);
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212 }
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213 }
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214 }
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215
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216 private void adoptUnadoptedHelper(final Node newChild) {
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217 assert newChild != null;
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218 if (newChild == this) {
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219 throw new IllegalStateException("The parent of a node can never be the node itself.");
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220 }
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221 newChild.parent = this;
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222 newChild.adoptUnadoptedHelper();
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223 }
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224
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225 private void adoptUnadoptedHelper() {
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226 Iterable<Node> children = this.getChildren();
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227 for (Node child : children) {
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228 if (child != null && child.getParent() == null) {
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229 this.adoptUnadoptedHelper(child);
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230 }
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231 }
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232 }
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233
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234 /**
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235 * Returns properties of this node interesting for debugging and can be overwritten by
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236 * subclasses to add their own custom properties.
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237 *
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238 * @return the properties as a key/value hash map
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239 */
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240 public Map<String, Object> getDebugProperties() {
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241 Map<String, Object> properties = new HashMap<>();
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242 return properties;
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243 }
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244
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245 /**
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246 * The current parent node of this node.
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247 *
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248 * @return the parent node
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249 */
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250 public final Node getParent() {
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251 return parent;
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252 }
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253
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254 /**
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255 * Replaces this node with another node. If there is a source section (see
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256 * {@link #getSourceSection()}) associated with this node, it is transferred to the new node.
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257 *
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258 * @param newNode the new node that is the replacement
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259 * @param reason a description of the reason for the replacement
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260 * @return the new node
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261 */
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262 public final <T extends Node> T replace(final T newNode, final CharSequence reason) {
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263 CompilerDirectives.transferToInterpreterAndInvalidate();
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264 atomic(new Runnable() {
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265 public void run() {
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266 replaceHelper(newNode, reason);
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267 }
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268 });
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269 return newNode;
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270 }
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271
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272 /**
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273 * Replaces this node with another node. If there is a source section (see
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274 * {@link #getSourceSection()}) associated with this node, it is transferred to the new node.
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275 *
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276 * @param newNode the new node that is the replacement
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277 * @return the new node
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278 */
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279 public final <T extends Node> T replace(T newNode) {
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280 return replace(newNode, "");
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281 }
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282
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283 final void replaceHelper(Node newNode, CharSequence reason) {
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284 CompilerAsserts.neverPartOfCompilation();
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285 assert inAtomicBlock();
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286 if (this.getParent() == null) {
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287 throw new IllegalStateException("This node cannot be replaced, because it does not yet have a parent.");
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288 }
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289 if (sourceSection != null && newNode.getSourceSection() == null) {
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290 // Pass on the source section to the new node.
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291 newNode.assignSourceSection(sourceSection);
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292 }
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293 // (aw) need to set parent *before* replace, so that (unsynchronized) getRootNode()
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294 // will always find the root node
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295 newNode.parent = this.parent;
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296 if (!NodeUtil.replaceChild(this.parent, this, newNode, true)) {
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297 this.parent.adoptUnadoptedHelper(newNode);
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298 }
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299 reportReplace(this, newNode, reason);
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300 onReplace(newNode, reason);
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301 }
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302
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303 /**
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304 * Checks if this node can be replaced by another node: tree structure & type.
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305 */
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306 public final boolean isSafelyReplaceableBy(Node newNode) {
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307 return NodeUtil.isReplacementSafe(getParent(), this, newNode);
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308 }
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309
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310 private void reportReplace(Node oldNode, Node newNode, CharSequence reason) {
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311 Node node = this;
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312 while (node != null) {
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313 boolean consumed = false;
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314 if (node instanceof ReplaceObserver) {
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315 consumed = ((ReplaceObserver) node).nodeReplaced(oldNode, newNode, reason);
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316 } else if (node instanceof RootNode) {
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317 CallTarget target = ((RootNode) node).getCallTarget();
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318 if (target instanceof ReplaceObserver) {
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319 consumed = ((ReplaceObserver) target).nodeReplaced(oldNode, newNode, reason);
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320 }
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321 }
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322 if (consumed) {
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323 break;
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324 }
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325 node = node.getParent();
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326 }
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327 if (TruffleOptions.TraceRewrites) {
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328 NodeUtil.traceRewrite(this, newNode, reason);
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329 }
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330 if (TruffleOptions.TraceASTJSON) {
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331 JSONHelper.dumpReplaceChild(this, newNode, reason);
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332 }
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333 }
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334
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335 /**
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336 * Intended to be implemented by subclasses of {@link Node} to receive a notification when the
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337 * node is rewritten. This method is invoked before the actual replace has happened.
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338 *
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339 * @param newNode the replacement node
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340 * @param reason the reason the replace supplied
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341 */
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342 protected void onReplace(Node newNode, CharSequence reason) {
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343 // empty default
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344 }
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345
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346 /**
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347 * Invokes the {@link NodeVisitor#visit(Node)} method for this node and recursively also for all
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348 * child nodes.
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349 *
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350 * @param nodeVisitor the visitor
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351 */
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352 public final void accept(NodeVisitor nodeVisitor) {
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353 if (nodeVisitor.visit(this)) {
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354 NodeUtil.forEachChildRecursive(this, nodeVisitor);
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355 }
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356 }
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357
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358 /**
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359 * Iterator over the children of this node.
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360 *
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361 * @return the iterator
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362 */
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363 public final Iterable<Node> getChildren() {
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364 return new Iterable<Node>() {
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365 public Iterator<Node> iterator() {
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366 return getNodeClass().makeIterator(Node.this);
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367 }
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368 };
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369 }
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370
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371 /**
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372 * Creates a shallow copy of this node.
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373 *
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374 * @return the new copy
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375 */
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376 public Node copy() {
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377 CompilerAsserts.neverPartOfCompilation();
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378
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379 try {
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380 return (Node) super.clone();
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381 } catch (CloneNotSupportedException e) {
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382 throw new AssertionError(e);
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383 }
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384 }
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385
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386 /**
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387 * Creates a deep copy of this node.
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388 *
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389 * @return the new deep copy
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390 */
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391 public Node deepCopy() {
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392 return NodeUtil.deepCopyImpl(this);
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393 }
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394
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395 /**
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396 * This method must never be called. It enforces that {@link Object#clone} is not directly
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397 * called by subclasses. Use the {@link #copy()} method instead.
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398 */
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399 @Override
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400 @Deprecated
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401 protected final Object clone() throws CloneNotSupportedException {
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402 throw new IllegalStateException("This method should never be called, use the copy method instead!");
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403 }
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404
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405 /**
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406 * Get the root node of the tree a node belongs to.
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407 *
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408 * @return the {@link RootNode} or {@code null} if there is none.
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409 */
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410 public final RootNode getRootNode() {
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411 Node rootNode = this;
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412 while (rootNode.getParent() != null) {
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413 assert !(rootNode instanceof RootNode) : "root node must not have a parent";
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414 rootNode = rootNode.getParent();
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415 }
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416 if (rootNode instanceof RootNode) {
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417 return (RootNode) rootNode;
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418 }
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419 return null;
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420 }
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421
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422 /**
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423 * Any node for which this is {@code true} can be "instrumented" by installing a {@link Probe}
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424 * that intercepts execution events at the node and routes them to any {@link Instrument}s that
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425 * have been attached to the {@link Probe}. Only one {@link Probe} may be installed at each
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426 * node; subsequent calls return the one already installed.
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427 * <p>
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428 * <b>Note:</b> instrumentation requires a appropriate {@link WrapperNode}, which must be
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429 * provided by {@link #createWrapperNode()}.
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430 *
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431 * @see Instrument
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432 */
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433 public boolean isInstrumentable() {
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434 return false;
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435 }
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436
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437 /**
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438 * For any node that {@link #isInstrumentable()}, this method must return a {@link Node} that:
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439 * <ol>
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440 * <li>implements {@link WrapperNode}</li>
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441 * <li>has {@code this} as it's child, and</li>
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442 * <li>whose type is safe for replacement of {@code this} in the parent.</li>
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443 * </ol>
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444 *
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445 * @return an appropriately typed {@link WrapperNode} if {@link #isInstrumentable()}.
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446 */
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447 public WrapperNode createWrapperNode() {
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448 return null;
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449 }
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450
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451 /**
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452 * Enables {@linkplain Instrument instrumentation} of a node, where the node is presumed to be
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453 * part of a well-formed Truffle AST that is not being executed. If this node has not already
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454 * been probed, modifies the AST by inserting a {@linkplain WrapperNode wrapper node} between
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455 * the node and its parent; the wrapper node must be provided by implementations of
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456 * {@link #createWrapperNode()}. No more than one {@link Probe} may be associated with a node,
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457 * so a {@linkplain WrapperNode wrapper} may not wrap another {@linkplain WrapperNode wrapper}.
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458 *
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459 * @return a (possibly newly created) {@link Probe} associated with this node.
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460 * @throws ProbeException (unchecked) when a probe cannot be created, leaving the AST unchanged
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461 */
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462 public final Probe probe() {
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463
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464 if (this instanceof WrapperNode) {
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465 throw new ProbeException(ProbeFailure.Reason.WRAPPER_NODE, null, this, null);
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466 }
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467
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468 if (parent == null) {
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469 throw new ProbeException(ProbeFailure.Reason.NO_PARENT, null, this, null);
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470 }
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471
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472 if (parent instanceof WrapperNode) {
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473 return ((WrapperNode) parent).getProbe();
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474 }
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475
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476 if (!isInstrumentable()) {
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477 throw new ProbeException(ProbeFailure.Reason.NOT_INSTRUMENTABLE, parent, this, null);
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478 }
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479
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480 // Create a new wrapper/probe with this node as its child.
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481 final WrapperNode wrapper = createWrapperNode();
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482
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483 if (wrapper == null || !(wrapper instanceof Node)) {
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484 throw new ProbeException(ProbeFailure.Reason.NO_WRAPPER, parent, this, wrapper);
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485 }
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486
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diff changeset
487 final Node wrapperNode = (Node) wrapper;
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488
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diff changeset
489 if (!this.isSafelyReplaceableBy(wrapperNode)) {
867058575979 Truffle: Improved support for "probing" AST nodes:
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490 throw new ProbeException(ProbeFailure.Reason.WRAPPER_TYPE, parent, this, wrapper);
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491 }
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492
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diff changeset
493 // Connect it to a Probe
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494 final Probe probe = ProbeNode.insertProbe(wrapper);
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495
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diff changeset
496 // Replace this node in the AST with the wrapper
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diff changeset
497 this.replace(wrapperNode);
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498
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499 return probe;
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500 }
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501
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diff changeset
502 /**
7267
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503 * Converts this node to a textual representation useful for debugging.
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504 */
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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505 @Override
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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diff changeset
506 public String toString() {
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diff changeset
507 StringBuilder sb = new StringBuilder(getClass().getSimpleName());
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diff changeset
508 Map<String, Object> properties = getDebugProperties();
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diff changeset
509 boolean hasProperties = false;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff changeset
510 for (Map.Entry<String, Object> entry : properties.entrySet()) {
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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diff changeset
511 sb.append(hasProperties ? "," : "<");
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512 hasProperties = true;
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diff changeset
513 sb.append(entry.getKey()).append("=").append(entry.getValue());
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514 }
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diff changeset
515 if (hasProperties) {
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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516 sb.append(">");
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517 }
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diff changeset
518 sb.append("@").append(Integer.toHexString(hashCode()));
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519 return sb.toString();
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520 }
14629
ba52fbec5b6c Truffle: atomic node rewriting
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521
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522 public final void atomic(Runnable closure) {
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523 RootNode rootNode = getRootNode();
19606
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diff changeset
524 synchronized (rootNode != null ? rootNode : GIL) {
19767
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diff changeset
525 assert enterAtomic();
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diff changeset
526 try {
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parents: 19758
diff changeset
527 closure.run();
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528 } finally {
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diff changeset
529 assert exitAtomic();
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diff changeset
530 }
14629
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diff changeset
531 }
ba52fbec5b6c Truffle: atomic node rewriting
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diff changeset
532 }
ba52fbec5b6c Truffle: atomic node rewriting
Andreas Woess <andreas.woess@jku.at>
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diff changeset
533
ba52fbec5b6c Truffle: atomic node rewriting
Andreas Woess <andreas.woess@jku.at>
parents: 14628
diff changeset
534 public final <T> T atomic(Callable<T> closure) {
ba52fbec5b6c Truffle: atomic node rewriting
Andreas Woess <andreas.woess@jku.at>
parents: 14628
diff changeset
535 try {
ba52fbec5b6c Truffle: atomic node rewriting
Andreas Woess <andreas.woess@jku.at>
parents: 14628
diff changeset
536 RootNode rootNode = getRootNode();
19606
d344d76b7b6d Truffle: Node cleanup
Andreas Woess <andreas.woess@oracle.com>
parents: 19247
diff changeset
537 synchronized (rootNode != null ? rootNode : GIL) {
19767
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
538 assert enterAtomic();
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
539 try {
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
540 return closure.call();
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
541 } finally {
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
542 assert exitAtomic();
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
543 }
14629
ba52fbec5b6c Truffle: atomic node rewriting
Andreas Woess <andreas.woess@jku.at>
parents: 14628
diff changeset
544 }
19606
d344d76b7b6d Truffle: Node cleanup
Andreas Woess <andreas.woess@oracle.com>
parents: 19247
diff changeset
545 } catch (RuntimeException | Error e) {
14629
ba52fbec5b6c Truffle: atomic node rewriting
Andreas Woess <andreas.woess@jku.at>
parents: 14628
diff changeset
546 throw e;
ba52fbec5b6c Truffle: atomic node rewriting
Andreas Woess <andreas.woess@jku.at>
parents: 14628
diff changeset
547 } catch (Exception e) {
ba52fbec5b6c Truffle: atomic node rewriting
Andreas Woess <andreas.woess@jku.at>
parents: 14628
diff changeset
548 throw new RuntimeException(e);
ba52fbec5b6c Truffle: atomic node rewriting
Andreas Woess <andreas.woess@jku.at>
parents: 14628
diff changeset
549 }
ba52fbec5b6c Truffle: atomic node rewriting
Andreas Woess <andreas.woess@jku.at>
parents: 14628
diff changeset
550 }
15775
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
551
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
552 /**
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
553 * Returns a user-readable description of the purpose of the Node, or "" if no description is
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
554 * available.
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
555 */
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
556 public String getDescription() {
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
557 NodeInfo info = getClass().getAnnotation(NodeInfo.class);
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
558 if (info != null) {
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
559 return info.description();
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
560 }
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
561 return "";
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
562 }
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
563
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
564 /**
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
565 * Returns a string representing the language this node has been implemented for. If the
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
566 * language is unknown, returns "".
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
567 */
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
568 public String getLanguage() {
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
569 NodeInfo info = getClass().getAnnotation(NodeInfo.class);
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
570 if (info != null && info.language() != null && info.language().length() > 0) {
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
571 return info.language();
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
572 }
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
573 if (parent != null) {
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
574 return parent.getLanguage();
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
575 }
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
576 return "";
4293efaaab76 Add description and language to the NodeInfo annotation
Christian Wirth <christian.wirth@oracle.com>
parents: 15474
diff changeset
577 }
19606
d344d76b7b6d Truffle: Node cleanup
Andreas Woess <andreas.woess@oracle.com>
parents: 19247
diff changeset
578
d344d76b7b6d Truffle: Node cleanup
Andreas Woess <andreas.woess@oracle.com>
parents: 19247
diff changeset
579 private static final Object GIL = new Object();
19767
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
580
19979
f792b4270cb1 Truffle: simplify inAtomicBlock assertion.
Christian Humer <christian.humer@oracle.com>
parents: 19975
diff changeset
581 private static final ThreadLocal<Integer> IN_ATOMIC_BLOCK = new ThreadLocal<Integer>() {
f792b4270cb1 Truffle: simplify inAtomicBlock assertion.
Christian Humer <christian.humer@oracle.com>
parents: 19975
diff changeset
582 @Override
f792b4270cb1 Truffle: simplify inAtomicBlock assertion.
Christian Humer <christian.humer@oracle.com>
parents: 19975
diff changeset
583 protected Integer initialValue() {
f792b4270cb1 Truffle: simplify inAtomicBlock assertion.
Christian Humer <christian.humer@oracle.com>
parents: 19975
diff changeset
584 return 0;
f792b4270cb1 Truffle: simplify inAtomicBlock assertion.
Christian Humer <christian.humer@oracle.com>
parents: 19975
diff changeset
585 }
f792b4270cb1 Truffle: simplify inAtomicBlock assertion.
Christian Humer <christian.humer@oracle.com>
parents: 19975
diff changeset
586 };
19767
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
587
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
588 private static boolean inAtomicBlock() {
19979
f792b4270cb1 Truffle: simplify inAtomicBlock assertion.
Christian Humer <christian.humer@oracle.com>
parents: 19975
diff changeset
589 return IN_ATOMIC_BLOCK.get() > 0;
19767
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
590 }
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
591
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
592 private static boolean enterAtomic() {
19979
f792b4270cb1 Truffle: simplify inAtomicBlock assertion.
Christian Humer <christian.humer@oracle.com>
parents: 19975
diff changeset
593 IN_ATOMIC_BLOCK.set(IN_ATOMIC_BLOCK.get() + 1);
19767
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
594 return true;
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
595 }
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
596
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
597 private static boolean exitAtomic() {
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
598 IN_ATOMIC_BLOCK.set(IN_ATOMIC_BLOCK.get() - 1);
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
599 return true;
e6a4ba0980dd Truffle: add assertion to always be in atomic blocks for replaces as it now may be violated by NodeUtil#nonAtomicReplace.
Christian Humer <christian.humer@gmail.com>
parents: 19758
diff changeset
600 }
22003
5bc7f7b867ab 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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents: 21966
diff changeset
601
5bc7f7b867ab 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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents: 21966
diff changeset
602 private static final class AccessorNodes extends Accessor {
22066
78c3d3d8d86e Clearly separating the TruffleLanguage definition from context used during its execution. TruffleLanguage now has to have public static field INSTANCE and override createContext method.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents: 22051
diff changeset
603 @SuppressWarnings("rawtypes")
22003
5bc7f7b867ab 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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents: 21966
diff changeset
604 @Override
5bc7f7b867ab 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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents: 21966
diff changeset
605 protected Class<? extends TruffleLanguage> findLanguage(RootNode n) {
5bc7f7b867ab 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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents: 21966
diff changeset
606 return n.language;
5bc7f7b867ab 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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents: 21966
diff changeset
607 }
5bc7f7b867ab 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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents: 21966
diff changeset
608 }
5bc7f7b867ab 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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents: 21966
diff changeset
609
5bc7f7b867ab 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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents: 21966
diff changeset
610 // registers into Accessor.NODES
5bc7f7b867ab 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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents: 21966
diff changeset
611 @SuppressWarnings("unused") private static final AccessorNodes ACCESSOR = new AccessorNodes();
7267
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.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
612 }