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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/InstrumentationNode.java @ 15779:8c34e2cc4add

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Truffle/Instrumentation: significant reorganization of the instrumentation framework's implementation and connection to the runtime ExecutionContext, with some new features, including a Tag-based "trap" mechanisms.
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Mon, 19 May 2014 17:14:36 -0700
parents bb9473723904
children 14ac87c56a27
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1 /*
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2 * Copyright (c) 2013, 2014, 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.instrument.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.CompilerDirectives.SlowPath;
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31 import com.oracle.truffle.api.frame.*;
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32 import com.oracle.truffle.api.instrument.*;
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33 import com.oracle.truffle.api.nodes.*;
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34
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35 /**
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36 * Abstract implementation of Truffle {@link Node} to be used for AST probes and instruments.
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37 * <p>
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38 * Coordinates propagation of Truffle AST {@link ExecutionEvents}.
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39 */
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40 public abstract class InstrumentationNode extends Node implements ExecutionEvents {
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41
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42 interface ProbeCallback {
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43 void newTagAdded(ProbeImpl probe, PhylumTag tag);
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44 }
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45
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46 /**
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47 * Creates a new {@link Probe}, presumed to be unique to a particular {@linkplain SourceSection}
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48 * extent of guest language source code.
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49 *
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50 * @return a new probe
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51 */
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52 static ProbeImpl createProbe(SourceSection sourceSection, ProbeCallback probeCallback) {
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53 return new ProbeImpl(sourceSection, probeCallback);
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54 }
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55
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56 /**
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57 * Next in chain.
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58 */
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59 @Child protected InstrumentationNode next;
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60
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61 protected InstrumentationNode() {
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62 }
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63
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64 /**
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65 * @return the instance of {@link Probe} to which this instrument is attached.
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66 */
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67 protected Probe getProbe() {
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68 final InstrumentationNode parent = (InstrumentationNode) getParent();
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69 return parent == null ? null : parent.getProbe();
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70 }
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71
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72 /**
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73 * Add a probe to the end of this probe chain.
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74 */
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75 private void internalAddInstrument(Instrument newInstrument) {
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76 if (next == null) {
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77 this.next = insert(newInstrument);
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78 } else {
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79 next.internalAddInstrument(newInstrument);
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80 }
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81 }
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82
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83 private void internalRemoveInstrument(Instrument oldInstrument) {
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84 if (next == null) {
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85 throw new RuntimeException("Couldn't find probe to remove: " + oldInstrument);
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86 } else if (next == oldInstrument) {
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87 if (oldInstrument.next == null) {
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88 this.next = null;
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89 } else {
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90 this.next = insert(oldInstrument.next);
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91 oldInstrument.next = null;
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92 }
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93 } else {
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94 next.internalRemoveInstrument(oldInstrument);
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95 }
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96 }
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97
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98 /**
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99 * Reports to the instance of {@link Probe} holding this instrument that some essential state
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100 * has changed that requires deoptimization.
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101 */
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102 @CompilerDirectives.SlowPath
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103 protected void notifyProbeChanged(Instrument instrument) {
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104 final ProbeImpl probe = (ProbeImpl) getProbe();
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105 probe.notifyProbeChanged(instrument);
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106 }
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107
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108 protected void internalEnter(Node astNode, VirtualFrame frame) {
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109 enter(astNode, frame);
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110 if (next != null) {
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111 next.internalEnter(astNode, frame);
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112 }
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113 }
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114
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115 protected void internalLeave(Node astNode, VirtualFrame frame) {
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116 leave(astNode, frame);
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117 if (next != null) {
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118 next.internalLeave(astNode, frame);
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119 }
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120 }
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121
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122 protected void internalLeave(Node astNode, VirtualFrame frame, boolean result) {
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123 leave(astNode, frame, result);
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124 if (next != null) {
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125 next.internalLeave(astNode, frame, result);
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126 }
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127 }
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128
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129 protected void internalLeave(Node astNode, VirtualFrame frame, byte result) {
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130 leave(astNode, frame, result);
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131 if (next != null) {
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132 next.internalLeave(astNode, frame, result);
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133 }
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134 }
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135
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136 protected void internalLeave(Node astNode, VirtualFrame frame, short result) {
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137 leave(astNode, frame, result);
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138 if (next != null) {
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139 next.internalLeave(astNode, frame, result);
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140 }
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141 }
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142
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143 protected void internalLeave(Node astNode, VirtualFrame frame, int result) {
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144 leave(astNode, frame, result);
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145 if (next != null) {
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146 next.internalLeave(astNode, frame, result);
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147 }
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148 }
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149
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150 protected void internalLeave(Node astNode, VirtualFrame frame, long result) {
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151 leave(astNode, frame, result);
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152 if (next != null) {
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153 next.internalLeave(astNode, frame, result);
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154 }
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155 }
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156
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157 protected void internalLeave(Node astNode, VirtualFrame frame, char result) {
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158 leave(astNode, frame, result);
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159 if (next != null) {
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160 next.internalLeave(astNode, frame, result);
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161 }
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162 }
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163
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164 protected void internalLeave(Node astNode, VirtualFrame frame, float result) {
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165 leave(astNode, frame, result);
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166 if (next != null) {
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167 next.internalLeave(astNode, frame, result);
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168 }
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169 }
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170
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171 protected void internalLeave(Node astNode, VirtualFrame frame, double result) {
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172 leave(astNode, frame, result);
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173 if (next != null) {
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174 next.internalLeave(astNode, frame, result);
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175 }
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176 }
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177
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178 protected void internalLeave(Node astNode, VirtualFrame frame, Object result) {
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179 leave(astNode, frame, result);
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180 if (next != null) {
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181 next.internalLeave(astNode, frame, result);
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182 }
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183 }
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184
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185 protected void internalLeaveExceptional(Node astNode, VirtualFrame frame, Exception e) {
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186 leaveExceptional(astNode, frame, null);
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187 if (next != null) {
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188 next.internalLeaveExceptional(astNode, frame, e);
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189 }
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190 }
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191
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192 /**
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193 * Holder of a chain of {@linkplain InstrumentationNode instruments}: manages the
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194 * {@link Assumption} that none of the instruments have changed since last checked.
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195 * <p>
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196 * An instance is intended to be shared by every clone of the AST node with which it is
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197 * originally attached, so it holds no parent pointer.
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198 * <p>
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199 * May be categorized by one or more {@linkplain PhylumTag tags}, signifying information useful
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200 * for instrumentation about its AST location(s).
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201 */
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202 static final class ProbeImpl extends InstrumentationNode implements Probe {
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203
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204 private final ProbeCallback probeCallback;
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205
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206 /**
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207 * Source information about the AST node (and its clones) to which this probe is attached.
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208 */
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209 private final SourceSection probedSourceSection;
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210
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211 // TODO (mlvdv) assumption model broken
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212 @CompilerDirectives.CompilationFinal private Assumption probeUnchanged;
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213
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214 @CompilerDirectives.CompilationFinal private PhylumTrap trap = null;
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215
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216 private final ArrayList<PhylumTag> tags = new ArrayList<>();
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217
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218 private ProbeImpl(SourceSection sourceSection, ProbeCallback probeCallback) {
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219 this.probeCallback = probeCallback;
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220 this.probedSourceSection = sourceSection;
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221 this.probeUnchanged = Truffle.getRuntime().createAssumption();
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222 this.next = null;
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223 }
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224
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225 public SourceSection getSourceLocation() {
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226 return probedSourceSection;
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227 }
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228
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229 @SlowPath
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230 public void tagAs(PhylumTag tag) {
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231 assert tag != null;
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232 if (!tags.contains(tag)) {
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233 tags.add(tag);
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234 probeCallback.newTagAdded(this, tag);
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235 }
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236 }
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237
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238 public boolean isTaggedAs(PhylumTag tag) {
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239 assert tag != null;
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240 return tags.contains(tag);
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241 }
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242
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243 public Iterable<PhylumTag> getPhylumTags() {
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244 return tags;
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245 }
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246
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247 @SlowPath
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248 public void addInstrument(Instrument instrument) {
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249 probeUnchanged.invalidate();
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250 super.internalAddInstrument(instrument);
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251 probeUnchanged = Truffle.getRuntime().createAssumption();
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252 }
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253
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254 @SlowPath
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255 public void removeInstrument(Instrument instrument) {
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256 probeUnchanged.invalidate();
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257 super.internalRemoveInstrument(instrument);
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258 probeUnchanged = Truffle.getRuntime().createAssumption();
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259 }
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260
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261 @Override
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262 protected Probe getProbe() {
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263 return this;
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264 }
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265
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266 @Override
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267 @SlowPath
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268 protected void notifyProbeChanged(Instrument instrument) {
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269 probeUnchanged.invalidate();
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270 probeUnchanged = Truffle.getRuntime().createAssumption();
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271 }
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272
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273 @SlowPath
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274 void setTrap(PhylumTrap trap) {
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275 assert trap == null || isTaggedAs(trap.getTag());
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276 probeUnchanged.invalidate();
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277 this.trap = trap;
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278 probeUnchanged = Truffle.getRuntime().createAssumption();
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279 }
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280
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281 public void enter(Node astNode, VirtualFrame frame) {
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282 if (trap != null || next != null) {
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283 if (!probeUnchanged.isValid()) {
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284 CompilerDirectives.transferToInterpreter();
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285 }
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286 if (trap != null) {
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287 trap.phylumTrappedAt(astNode, frame.materialize());
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288 }
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289 if (next != null) {
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290 next.internalEnter(astNode, frame);
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291 }
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292 }
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293 }
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294
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295 public void leave(Node astNode, VirtualFrame frame) {
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296 if (next != null) {
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297 if (!probeUnchanged.isValid()) {
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298 CompilerDirectives.transferToInterpreter();
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299 }
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300 next.internalLeave(astNode, frame);
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301 }
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302 }
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303
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304 public void leave(Node astNode, VirtualFrame frame, boolean result) {
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305 if (next != null) {
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306 if (!probeUnchanged.isValid()) {
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307 CompilerDirectives.transferToInterpreter();
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308 }
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309 next.internalLeave(astNode, frame, result);
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310 }
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311 }
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312
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313 public void leave(Node astNode, VirtualFrame frame, byte result) {
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314 if (next != null) {
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315 if (!probeUnchanged.isValid()) {
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316 CompilerDirectives.transferToInterpreter();
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317 }
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318 next.internalLeave(astNode, frame, result);
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319 }
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320 }
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321
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322 public void leave(Node astNode, VirtualFrame frame, short result) {
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323 if (next != null) {
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324 if (!probeUnchanged.isValid()) {
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325 CompilerDirectives.transferToInterpreter();
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326 }
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327 next.internalLeave(astNode, frame, result);
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328 }
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329 }
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330
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331 public void leave(Node astNode, VirtualFrame frame, int result) {
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332 if (next != null) {
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333 if (!probeUnchanged.isValid()) {
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334 CompilerDirectives.transferToInterpreter();
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335 }
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336 next.internalLeave(astNode, frame, result);
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337 }
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338 }
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339
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340 public void leave(Node astNode, VirtualFrame frame, long result) {
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341 if (next != null) {
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342 if (!probeUnchanged.isValid()) {
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343 CompilerDirectives.transferToInterpreter();
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344 }
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345 next.internalLeave(astNode, frame, result);
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346 }
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347 }
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348
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349 public void leave(Node astNode, VirtualFrame frame, char result) {
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350 if (next != null) {
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351 if (!probeUnchanged.isValid()) {
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352 CompilerDirectives.transferToInterpreter();
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353 }
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diff changeset
354 next.internalLeave(astNode, frame, result);
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355 }
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356 }
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357
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358 public void leave(Node astNode, VirtualFrame frame, float result) {
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359 if (next != null) {
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360 if (!probeUnchanged.isValid()) {
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diff changeset
361 CompilerDirectives.transferToInterpreter();
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diff changeset
362 }
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diff changeset
363 next.internalLeave(astNode, frame, result);
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diff changeset
364 }
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365 }
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366
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367 public void leave(Node astNode, VirtualFrame frame, double result) {
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368 if (next != null) {
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diff changeset
369 if (!probeUnchanged.isValid()) {
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diff changeset
370 CompilerDirectives.transferToInterpreter();
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371 }
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diff changeset
372 next.internalLeave(astNode, frame, result);
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373 }
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374 }
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375
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diff changeset
376 public void leave(Node astNode, VirtualFrame frame, Object result) {
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diff changeset
377 if (next != null) {
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diff changeset
378 if (!probeUnchanged.isValid()) {
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diff changeset
379 CompilerDirectives.transferToInterpreter();
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380 }
8c34e2cc4add Truffle/Instrumentation: significant reorganization of the instrumentation framework's implementation and connection to the runtime ExecutionContext, with some new features, including a Tag-based "trap" mechanisms.
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381 next.internalLeave(astNode, frame, result);
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382 }
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parents: 15605
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383 }
8c34e2cc4add Truffle/Instrumentation: significant reorganization of the instrumentation framework's implementation and connection to the runtime ExecutionContext, with some new features, including a Tag-based "trap" mechanisms.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents: 15605
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384
8c34e2cc4add Truffle/Instrumentation: significant reorganization of the instrumentation framework's implementation and connection to the runtime ExecutionContext, with some new features, including a Tag-based "trap" mechanisms.
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parents: 15605
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385 public void leaveExceptional(Node astNode, VirtualFrame frame, Exception e) {
15450
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386 if (next != null) {
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387 if (!probeUnchanged.isValid()) {
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388 CompilerDirectives.transferToInterpreter();
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389 }
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parents:
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390 next.internalLeaveExceptional(astNode, frame, e);
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391 }
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392 }
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393
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394 }
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395
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396 }