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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultTruffleRuntime.java @ 19311:b54b548047ac

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Truffle: also offer UnsafeAccessFactory in DefaultTruffleRuntime
author Andreas Woess <andreas.woess@jku.at>
date Thu, 12 Feb 2015 03:42:51 +0100
parents afa70d3e8159
children 48eeda5dfdbf
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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28
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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 callTargets.put(target, null);
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59 return target;
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60 }
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61
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62 public DirectCallNode createDirectCallNode(CallTarget target) {
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63 return new DefaultDirectCallNode(target);
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64 }
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65
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66 public IndirectCallNode createIndirectCallNode() {
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67 return new DefaultIndirectCallNode();
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68 }
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69
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70 @Override
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71 public VirtualFrame createVirtualFrame(Object[] arguments, FrameDescriptor frameDescriptor) {
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72 return new DefaultVirtualFrame(frameDescriptor, arguments);
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73 }
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74
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75 @Override
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76 public MaterializedFrame createMaterializedFrame(Object[] arguments) {
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77 return createMaterializedFrame(arguments, new FrameDescriptor());
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78 }
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79
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80 @Override
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81 public MaterializedFrame createMaterializedFrame(Object[] arguments, FrameDescriptor frameDescriptor) {
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82 return new DefaultMaterializedFrame(new DefaultVirtualFrame(frameDescriptor, arguments));
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83 }
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84
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85 @Override
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86 public CompilerOptions createCompilerOptions() {
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87 return new DefaultCompilerOptions();
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88 }
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89
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90 @Override
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91 public Assumption createAssumption() {
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92 return createAssumption(null);
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93 }
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94
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95 @Override
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96 public Assumption createAssumption(String name) {
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97 return new DefaultAssumption(name);
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98 }
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99
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100 private LinkedList<FrameInstance> getThreadLocalStackTrace() {
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101 LinkedList<FrameInstance> result = stackTraces.get();
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102 if (result == null) {
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103 result = new LinkedList<>();
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104 stackTraces.set(result);
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105 }
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106 return result;
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107 }
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108
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109 public FrameInstance setCurrentFrame(FrameInstance newValue) {
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110 FrameInstance oldValue = currentFrames.get();
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111 currentFrames.set(newValue);
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112 return oldValue;
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113 }
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114
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115 public void pushFrame(FrameInstance frame) {
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116 getThreadLocalStackTrace().addFirst(frame);
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117 }
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118
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119 public void popFrame() {
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120 getThreadLocalStackTrace().removeFirst();
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121 }
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122
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123 @Override
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124 public <T> T iterateFrames(FrameInstanceVisitor<T> visitor) {
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125 T result = null;
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126 for (FrameInstance frameInstance : getThreadLocalStackTrace()) {
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127 result = visitor.visitFrame(frameInstance);
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128 if (result != null) {
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129 return result;
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130 }
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131 }
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132 return result;
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133 }
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134
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135 @Override
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136 public FrameInstance getCallerFrame() {
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137 return getThreadLocalStackTrace().peekFirst();
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138 }
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139
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140 @Override
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141 public Collection<RootCallTarget> getCallTargets() {
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142 return Collections.unmodifiableSet(callTargets.keySet());
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143 }
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144
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145 @Override
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146 public FrameInstance getCurrentFrame() {
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147 return currentFrames.get();
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148 }
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149
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150 public <T> T getCapability(Class<T> capability) {
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151 if (capability == UnsafeAccessFactory.class) {
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152 return capability.cast(new UnsafeAccessFactoryImpl());
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153 }
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154 return null;
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155 }
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156
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157 public void notifyTransferToInterpreter() {
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158 }
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159
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160 public LoopNode createLoopNode(RepeatingNode repeating) {
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161 if (!(repeating instanceof Node)) {
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162 throw new IllegalArgumentException("Repeating node must be of type Node.");
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163 }
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164 return new DefaultLoopNode(repeating);
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165 }
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e3c95cbbb50c Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
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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.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
167 }