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annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/Accessor.java @ 22214:3aad794eec0e

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Truffle/Instrumentation: first large merge of instrumentation code into the TruffleVM framework - introduce the Instrumenter class, held by the TruffleVM to support instrumentation services - reimplement Probe-realated services (formerly statics in Probe.java) to be provided by the Instrumenter- add new Accessors - change the TruffleVM startup sequence - change the APIs of the Debugger and many other classes
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Mon, 14 Sep 2015 22:59:51 -0700
parents c334865b9d42
children d3bdaa91bc82
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1 /*
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2 * Copyright (c) 2014, 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
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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.io.Closeable;
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28 import java.io.IOException;
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29 import java.io.Reader;
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30 import java.io.Writer;
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31 import java.lang.ref.Reference;
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32 import java.lang.ref.WeakReference;
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33 import java.util.Collections;
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34 import java.util.List;
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35
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36 import com.oracle.truffle.api.Assumption;
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37 import com.oracle.truffle.api.CallTarget;
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38 import com.oracle.truffle.api.Truffle;
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39 import com.oracle.truffle.api.TruffleLanguage;
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40 import com.oracle.truffle.api.TruffleLanguage.Env;
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41 import com.oracle.truffle.api.debug.DebugSupportProvider;
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42 import com.oracle.truffle.api.debug.Debugger;
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43 import com.oracle.truffle.api.frame.MaterializedFrame;
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44 import com.oracle.truffle.api.instrument.ASTProber;
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45 import com.oracle.truffle.api.instrument.AdvancedInstrumentResultListener;
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46 import com.oracle.truffle.api.instrument.AdvancedInstrumentRootFactory;
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47 import com.oracle.truffle.api.instrument.Instrumenter;
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48 import com.oracle.truffle.api.instrument.Probe;
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49 import com.oracle.truffle.api.instrument.ToolSupportProvider;
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50 import com.oracle.truffle.api.instrument.Visualizer;
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51 import com.oracle.truffle.api.nodes.Node;
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52 import com.oracle.truffle.api.nodes.RootNode;
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53 import com.oracle.truffle.api.source.Source;
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54
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55 /**
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56 * Communication between TruffleVM, TruffleLanguage API/SPI, and other services.
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57 */
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58 @SuppressWarnings("rawtypes")
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59 public abstract class Accessor {
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60 private static Accessor API;
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61 private static Accessor SPI;
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62 private static Accessor NODES;
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63 private static Accessor INTEROP;
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64 private static Accessor INSTRUMENT;
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65 private static Accessor TOOL;
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66 private static Accessor DEBUG;
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67 private static final ThreadLocal<Object> CURRENT_VM = new ThreadLocal<>();
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68
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69 static {
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70 TruffleLanguage<?> lng = new TruffleLanguage<Object>() {
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71 @Override
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72 protected Object findExportedSymbol(Object context, String globalName, boolean onlyExplicit) {
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73 return null;
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74 }
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75
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76 @Override
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77 protected Object getLanguageGlobal(Object context) {
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78 return null;
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79 }
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80
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81 @Override
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82 protected boolean isObjectOfLanguage(Object object) {
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83 return false;
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84 }
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85
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86 @SuppressWarnings("deprecation")
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87 @Override
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88 protected ToolSupportProvider getToolSupport() {
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89 throw new UnsupportedOperationException();
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90 }
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91
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92 @SuppressWarnings("deprecation")
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93 @Override
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94 protected DebugSupportProvider getDebugSupport() {
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95 return null;
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96 }
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97
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98 @Override
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99 protected CallTarget parse(Source code, Node context, String... argumentNames) throws IOException {
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100 throw new IOException();
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101 }
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102
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103 @Override
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104 protected Object createContext(TruffleLanguage.Env env) {
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105 return null;
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106 }
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107
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108 @Override
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109 protected List<ASTProber> getASTProbers() {
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110 return Collections.emptyList();
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111 }
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112
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113 @Override
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114 protected Visualizer getVisualizer() {
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115 return null;
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116 }
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117
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118 @SuppressWarnings("deprecation")
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119 @Override
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120 protected void enableASTProbing(ASTProber astProber) {
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121 throw new UnsupportedOperationException();
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122 }
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123
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124 @Override
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125 protected Object evalInContext(Source source, Node node, MaterializedFrame mFrame) throws IOException {
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126 return null;
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127 }
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128
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129 @Override
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130 protected AdvancedInstrumentRootFactory createAdvancedInstrumentRootFactory(String expr, AdvancedInstrumentResultListener resultListener) throws IOException {
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131 return null;
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132 }
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133 };
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134 lng.hashCode();
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135 new Node(null) {
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136 }.getRootNode();
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137
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138 try {
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139 Class.forName(Instrumenter.class.getName(), true, Instrumenter.class.getClassLoader());
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140 Class.forName(Debugger.class.getName(), true, Debugger.class.getClassLoader());
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141 } catch (ClassNotFoundException ex) {
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142 throw new IllegalStateException(ex);
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143 }
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144 }
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145
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146 protected Accessor() {
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147 if (this.getClass().getSimpleName().endsWith("API")) {
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148 if (API != null) {
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149 throw new IllegalStateException();
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150 }
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151 API = this;
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152 } else if (this.getClass().getSimpleName().endsWith("Nodes")) {
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153 if (NODES != null) {
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154 throw new IllegalStateException();
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155 }
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156 NODES = this;
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157 } else if (this.getClass().getSimpleName().endsWith("Interop")) {
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158 if (INTEROP != null) {
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159 throw new IllegalStateException();
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160 }
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161 INTEROP = this;
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162 } else if (this.getClass().getSimpleName().endsWith("Instrument")) {
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163 if (INSTRUMENT != null) {
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164 throw new IllegalStateException();
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165 }
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166 INSTRUMENT = this;
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167 } else if (this.getClass().getSimpleName().endsWith("Debug")) {
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168 if (DEBUG != null) {
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169 throw new IllegalStateException();
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170 }
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171 DEBUG = this;
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172 } else if (this.getClass().getSimpleName().endsWith("Tool")) {
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173 if (TOOL != null) {
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174 throw new IllegalStateException();
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175 }
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176 TOOL = this;
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177 } else {
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178 if (SPI != null) {
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179 throw new IllegalStateException();
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180 }
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181 SPI = this;
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182 }
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183 }
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184
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185 protected Env attachEnv(Object vm, TruffleLanguage<?> language, Writer stdOut, Writer stdErr, Reader stdIn) {
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186 return API.attachEnv(vm, language, stdOut, stdErr, stdIn);
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187 }
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188
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189 protected Object eval(TruffleLanguage<?> l, Source s) throws IOException {
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190 return API.eval(l, s);
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191 }
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192
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193 protected Object importSymbol(Object vm, TruffleLanguage<?> queryingLang, String globalName) {
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194 return SPI.importSymbol(vm, queryingLang, globalName);
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195 }
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196
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197 protected Object findExportedSymbol(TruffleLanguage.Env env, String globalName, boolean onlyExplicit) {
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198 return API.findExportedSymbol(env, globalName, onlyExplicit);
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199 }
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200
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201 protected Object languageGlobal(TruffleLanguage.Env env) {
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202 return API.languageGlobal(env);
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203 }
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204
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205 @Deprecated
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206 protected ToolSupportProvider getToolSupport(@SuppressWarnings("unused") TruffleLanguage<?> l) {
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207 throw new UnsupportedOperationException();
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208 }
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209
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210 @Deprecated
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211 protected DebugSupportProvider getDebugSupport(@SuppressWarnings("unused") TruffleLanguage<?> l) {
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212 throw new UnsupportedOperationException();
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213 }
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214
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215 protected List<ASTProber> getASTProbers(Object vm, Class<? extends TruffleLanguage> languageClass) {
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216 return API.getASTProbers(vm, languageClass);
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217 }
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218
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219 protected AdvancedInstrumentRootFactory createAdvancedInstrumentRootFactory(Object vm, Class<? extends TruffleLanguage> languageClass, String expr, AdvancedInstrumentResultListener resultListener)
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220 throws IOException {
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221 return API.createAdvancedInstrumentRootFactory(vm, languageClass, expr, resultListener);
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222 }
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223
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224 protected Class<? extends TruffleLanguage> findLanguage(RootNode n) {
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225 return NODES.findLanguage(n);
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226 }
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227
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228 protected Class<? extends TruffleLanguage> findLanguage(Probe probe) {
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229 return INSTRUMENT.findLanguage(probe);
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230 }
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231
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232 protected Env findLanguage(Object known, Class<? extends TruffleLanguage> languageClass) {
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233 Object vm;
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234 if (known == null) {
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235 vm = CURRENT_VM.get();
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236 if (vm == null) {
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237 throw new IllegalStateException();
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238 }
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239 if (languageClass == null) {
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240 return null;
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241 }
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242 } else {
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243 vm = known;
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244 }
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245 return SPI.findLanguage(vm, languageClass);
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246 }
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247
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248 protected TruffleLanguage findLanguageImpl(Object known, Class<? extends TruffleLanguage> languageClass) {
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249 Object vm;
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250 if (known == null) {
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251 vm = CURRENT_VM.get();
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252 if (vm == null) {
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253 throw new IllegalStateException();
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254 }
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255 } else {
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256 vm = known;
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257 }
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258 return SPI.findLanguageImpl(vm, languageClass);
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259 }
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260
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261 protected Instrumenter getInstrumenter(Object known) {
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262 Object vm;
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263 if (known == null) {
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264 vm = CURRENT_VM.get();
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265 if (vm == null) {
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266 throw new IllegalStateException();
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267 }
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268 } else {
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269 vm = known;
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270 }
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271 return SPI.getInstrumenter(vm);
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272 }
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273
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274 protected Instrumenter createInstrumenter() {
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275 return INSTRUMENT.createInstrumenter();
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276 }
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277
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278 private static Reference<Object> previousVM = new WeakReference<>(null);
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diff changeset
279 private static Assumption oneVM = Truffle.getRuntime().createAssumption();
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280
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281 protected Closeable executionStart(Object vm, Debugger[] fillIn, Source s) {
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282 final Closeable debugClose = DEBUG.executionStart(vm, fillIn, s);
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283 final Object prev = CURRENT_VM.get();
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diff changeset
284 if (!(vm == previousVM.get())) {
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285 previousVM = new WeakReference<>(vm);
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286 oneVM.invalidate();
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287 oneVM = Truffle.getRuntime().createAssumption();
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288
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289 }
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diff changeset
290 CURRENT_VM.set(vm);
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diff changeset
291 class ContextCloseable implements Closeable {
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292 @Override
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diff changeset
293 public void close() throws IOException {
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294 CURRENT_VM.set(prev);
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diff changeset
295 debugClose.close();
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296 }
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297 }
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diff changeset
298 return new ContextCloseable();
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299 }
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300
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diff changeset
301 protected void dispatchEvent(Object vm, Object event) {
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diff changeset
302 SPI.dispatchEvent(vm, event);
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303 }
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304
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diff changeset
305 static Assumption oneVMAssumption() {
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306 return oneVM;
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307 }
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308
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309 @SuppressWarnings({"unchecked"})
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310 static <C> C findContext(Class<? extends TruffleLanguage> type) {
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311 Env env = SPI.findLanguage(CURRENT_VM.get(), type);
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312 return (C) API.findContext(env);
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313 }
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.
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314
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315 /**
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316 * Don't call me. I am here only to let NetBeans debug any Truffle project.
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317 *
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318 * @param args
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319 */
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320 public static void main(String... args) {
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321 throw new IllegalStateException();
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322 }
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323
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324 protected Object findContext(Env env) {
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325 return API.findContext(env);
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326 }
22110
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327
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328 protected TruffleLanguage<?> findLanguage(Env env) {
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329 return API.findLanguage(env);
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330 }
22214
3aad794eec0e Truffle/Instrumentation: first large merge of instrumentation code into the TruffleVM framework
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331
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332 protected void applyInstrumentation(Node node) {
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333 INSTRUMENT.applyInstrumentation(node);
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334 }
21468
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335 }