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annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultTruffleRuntime.java @ 22046:e7c2d36daf72

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TruffleLanguage.parse method to convert a source to CallTarget. Basic caching to make sure the code is shared among tenants in one JVM.
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Thu, 30 Jul 2015 17:36:34 +0200
parents 9c8c0937da41
children c6966c8ea83c
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1 /*
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2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation. 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
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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.impl;
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26
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27 import java.util.*;
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29 import com.oracle.truffle.api.*;
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30 import com.oracle.truffle.api.frame.*;
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31 import com.oracle.truffle.api.nodes.*;
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32 import com.oracle.truffle.api.unsafe.*;
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33
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34 /**
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35 * Default implementation of the Truffle runtime if the virtual machine does not provide a better
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36 * performing alternative.
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37 * <p>
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38 * This is an implementation-specific class. Do not use or instantiate it. Instead, use
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39 * {@link Truffle#getRuntime()} to retrieve the current {@link TruffleRuntime}.
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40 */
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41 public final class DefaultTruffleRuntime implements TruffleRuntime {
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42
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43 private final ThreadLocal<LinkedList<FrameInstance>> stackTraces = new ThreadLocal<>();
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44 private final ThreadLocal<FrameInstance> currentFrames = new ThreadLocal<>();
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45 private final Map<RootCallTarget, Void> callTargets = Collections.synchronizedMap(new WeakHashMap<RootCallTarget, Void>());
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46
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47 public DefaultTruffleRuntime() {
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48 }
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49
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50 @Override
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51 public String getName() {
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52 return "Default Truffle Runtime";
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53 }
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54
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55 @Override
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56 public RootCallTarget createCallTarget(RootNode rootNode) {
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57 DefaultCallTarget target = new DefaultCallTarget(rootNode);
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58 rootNode.setCallTarget(target);
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59 callTargets.put(target, null);
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60 return target;
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61 }
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62
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63 public DirectCallNode createDirectCallNode(CallTarget target) {
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64 return new DefaultDirectCallNode(target);
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65 }
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66
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67 public IndirectCallNode createIndirectCallNode() {
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68 return new DefaultIndirectCallNode();
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69 }
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70
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71 @Override
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72 public VirtualFrame createVirtualFrame(Object[] arguments, FrameDescriptor frameDescriptor) {
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73 return new DefaultVirtualFrame(frameDescriptor, arguments);
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74 }
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76 @Override
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77 public MaterializedFrame createMaterializedFrame(Object[] arguments) {
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78 return createMaterializedFrame(arguments, new FrameDescriptor());
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79 }
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81 @Override
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82 public MaterializedFrame createMaterializedFrame(Object[] arguments, FrameDescriptor frameDescriptor) {
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83 return new DefaultMaterializedFrame(new DefaultVirtualFrame(frameDescriptor, arguments));
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84 }
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85
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86 @Override
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87 public CompilerOptions createCompilerOptions() {
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88 return new DefaultCompilerOptions();
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89 }
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91 @Override
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92 public Assumption createAssumption() {
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93 return createAssumption(null);
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94 }
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95
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96 @Override
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97 public Assumption createAssumption(String name) {
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98 return new DefaultAssumption(name);
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99 }
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100
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101 private LinkedList<FrameInstance> getThreadLocalStackTrace() {
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102 LinkedList<FrameInstance> result = stackTraces.get();
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103 if (result == null) {
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104 result = new LinkedList<>();
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105 stackTraces.set(result);
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106 }
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107 return result;
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108 }
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109
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110 public FrameInstance setCurrentFrame(FrameInstance newValue) {
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111 FrameInstance oldValue = currentFrames.get();
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112 currentFrames.set(newValue);
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113 return oldValue;
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114 }
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115
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116 public void pushFrame(FrameInstance frame) {
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117 getThreadLocalStackTrace().addFirst(frame);
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118 }
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119
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120 public void popFrame() {
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121 getThreadLocalStackTrace().removeFirst();
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122 }
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123
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124 @Override
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125 public <T> T iterateFrames(FrameInstanceVisitor<T> visitor) {
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126 T result = null;
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127 for (FrameInstance frameInstance : getThreadLocalStackTrace()) {
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128 result = visitor.visitFrame(frameInstance);
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129 if (result != null) {
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130 return result;
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131 }
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132 }
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133 return result;
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134 }
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135
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136 @Override
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137 public FrameInstance getCallerFrame() {
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138 return getThreadLocalStackTrace().peekFirst();
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139 }
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140
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141 @Override
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142 public Collection<RootCallTarget> getCallTargets() {
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143 return Collections.unmodifiableSet(callTargets.keySet());
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144 }
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145
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146 @Override
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147 public FrameInstance getCurrentFrame() {
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148 return currentFrames.get();
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149 }
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150
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151 public <T> T getCapability(Class<T> capability) {
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152 if (capability == UnsafeAccessFactory.class) {
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153 return capability.cast(new UnsafeAccessFactoryImpl());
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154 }
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155 return null;
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156 }
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157
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158 public void notifyTransferToInterpreter() {
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159 }
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160
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161 public LoopNode createLoopNode(RepeatingNode repeating) {
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162 if (!(repeating instanceof Node)) {
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163 throw new IllegalArgumentException("Repeating node must be of type Node.");
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164 }
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165 return new DefaultLoopNode(repeating);
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166 }
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a4b84ba6dc2e Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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parents:
diff changeset
167 }