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annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/debug/Debugger.java @ 22003:5bc7f7b867ab

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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.
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Sat, 18 Jul 2015 18:03:36 +0200
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children 02e4cf046653
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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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1 /*
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2 * Copyright (c) 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.debug;
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26
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27 import java.io.*;
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28 import java.util.*;
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29
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30 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
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31 import com.oracle.truffle.api.*;
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32 import com.oracle.truffle.api.frame.*;
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33 import com.oracle.truffle.api.impl.Accessor;
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34 import com.oracle.truffle.api.instrument.*;
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35 import com.oracle.truffle.api.nodes.*;
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36 import com.oracle.truffle.api.source.*;
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37 import com.oracle.truffle.api.vm.TruffleVM;
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38
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39 /**
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40 * Language-agnostic engine for running Truffle languages under debugging control.
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41 */
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42 public final class Debugger {
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43
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44 private static final boolean TRACE = false;
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45 private static final String TRACE_PREFIX = "DEBUG ENGINE: ";
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46
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47 private static final PrintStream OUT = System.out;
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48
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49 private static final SyntaxTag STEPPING_TAG = StandardSyntaxTag.STATEMENT;
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50 private static final SyntaxTag CALL_TAG = StandardSyntaxTag.CALL;
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51
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52 private static void trace(String format, Object... args) {
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53 if (TRACE) {
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54 OUT.println(TRACE_PREFIX + String.format(format, args));
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55 }
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56 }
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57
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58 private final TruffleVM vm;
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59 private Source lastSource;
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60
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61 interface BreakpointCallback {
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62
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63 /**
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64 * Passes control to the debugger with execution suspended.
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65 */
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66 void haltedAt(Node astNode, MaterializedFrame mFrame, String haltReason);
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67 }
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69 interface WarningLog {
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71 /**
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72 * Logs a warning that is kept until the start of the next execution.
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73 */
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74 void addWarning(String warning);
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75 }
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76
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77 /**
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78 * Implementation of line-oriented breakpoints.
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79 */
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80 private final LineBreakpointFactory lineBreaks;
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81
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82 /**
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83 * Implementation of tag-oriented breakpoints.
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84 */
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85 private final TagBreakpointFactory tagBreaks;
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86
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87 /**
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88 * Head of the stack of executions.
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89 */
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90 private DebugExecutionContext debugContext;
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91
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92 Debugger(TruffleVM vm) {
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93 this.vm = vm;
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94
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95 Source.setFileCaching(true);
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96
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97 // Initialize execution context stack
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98 debugContext = new DebugExecutionContext(null, null);
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99 prepareContinue();
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100 debugContext.contextTrace("START EXEC DEFAULT");
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101
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102 final BreakpointCallback breakpointCallback = new BreakpointCallback() {
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103
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104 @TruffleBoundary
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105 public void haltedAt(Node astNode, MaterializedFrame mFrame, String haltReason) {
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106 debugContext.halt(astNode, mFrame, true, haltReason);
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107 }
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108 };
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109
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110 final WarningLog warningLog = new WarningLog() {
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111
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112 public void addWarning(String warning) {
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113 assert debugContext != null;
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114 debugContext.logWarning(warning);
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115 }
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116 };
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117
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118 this.lineBreaks = new LineBreakpointFactory(this, breakpointCallback, warningLog);
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119 this.tagBreaks = new TagBreakpointFactory(this, breakpointCallback, warningLog);
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120 }
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121
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122 TruffleVM vm() {
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123 return vm;
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124 }
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125
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126 /**
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127 * Sets a breakpoint to halt at a source line.
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128 *
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129 * @param ignoreCount number of hits to ignore before halting
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130 * @param lineLocation where to set the breakpoint (source, line number)
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131 * @param oneShot breakpoint disposes itself after fist hit, if {@code true}
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132 * @return a new breakpoint, initially enabled
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133 * @throws IOException if the breakpoint can not be set.
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134 */
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135 @TruffleBoundary
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136 public Breakpoint setLineBreakpoint(int ignoreCount, LineLocation lineLocation, boolean oneShot) throws IOException {
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137 return lineBreaks.create(ignoreCount, lineLocation, oneShot);
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138 }
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139
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140 /**
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141 * Sets a breakpoint to halt at any node holding a specified {@link SyntaxTag}.
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142 *
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143 * @param ignoreCount number of hits to ignore before halting
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144 * @param oneShot if {@code true} breakpoint removes it self after a hit
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145 * @return a new breakpoint, initially enabled
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146 * @throws IOException if the breakpoint already set
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147 */
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148 @TruffleBoundary
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149 public Breakpoint setTagBreakpoint(int ignoreCount, SyntaxTag tag, boolean oneShot) throws IOException {
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150 return tagBreaks.create(ignoreCount, tag, oneShot);
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151 }
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152
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153 /**
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154 * Gets all existing breakpoints, whatever their status, in natural sorted order. Modification
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155 * save.
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156 */
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157 @TruffleBoundary
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158 public Collection<Breakpoint> getBreakpoints() {
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159 final Collection<Breakpoint> result = new ArrayList<>();
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160 result.addAll(lineBreaks.getAll());
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161 result.addAll(tagBreaks.getAll());
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162 return result;
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163 }
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164
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165 /**
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166 * Prepare to execute in Continue mode when guest language program execution resumes. In this
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167 * mode:
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168 * <ul>
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169 * <li>Execution will continue until either:
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170 * <ol>
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171 * <li>execution arrives at a node to which an enabled breakpoint is attached,
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172 * <strong>or:</strong></li>
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173 * <li>execution completes.</li>
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174 * </ol>
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175 * </ul>
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176 */
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177 @TruffleBoundary
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178 void prepareContinue() {
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179 debugContext.setStrategy(new Continue());
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180 }
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181
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182 /**
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183 * Prepare to execute in StepInto mode when guest language program execution resumes. In this
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184 * mode:
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185 * <ul>
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186 * <li>User breakpoints are disabled.</li>
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187 * <li>Execution will continue until either:
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188 * <ol>
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189 * <li>execution arrives at a node with the tag {@linkplain StandardSyntaxTag#STATEMENT
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190 * STATMENT}, <strong>or:</strong></li>
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191 * <li>execution completes.</li>
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192 * </ol>
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193 * <li>StepInto mode persists only through one resumption (i.e. {@code stepIntoCount} steps),
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194 * and reverts by default to Continue mode.</li>
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195 * </ul>
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196 *
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197 * @param stepCount the number of times to perform StepInto before halting
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198 * @throws IllegalArgumentException if the specified number is {@code <= 0}
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199 */
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200 @TruffleBoundary
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201 void prepareStepInto(int stepCount) {
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202 if (stepCount <= 0) {
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203 throw new IllegalArgumentException();
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204 }
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205 debugContext.setStrategy(new StepInto(stepCount));
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206 }
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207
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208 /**
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209 * Prepare to execute in StepOut mode when guest language program execution resumes. In this
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210 * mode:
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211 * <ul>
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212 * <li>User breakpoints are enabled.</li>
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213 * <li>Execution will continue until either:
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214 * <ol>
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215 * <li>execution arrives at the nearest enclosing call site on the stack, <strong>or</strong></li>
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216 * <li>execution completes.</li>
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217 * </ol>
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218 * <li>StepOut mode persists only through one resumption, and reverts by default to Continue
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219 * mode.</li>
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220 * </ul>
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221 */
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222 @TruffleBoundary
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223 void prepareStepOut() {
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224 debugContext.setStrategy(new StepOut());
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225 }
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226
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227 /**
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228 * Prepare to execute in StepOver mode when guest language program execution resumes. In this
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229 * mode:
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230 * <ul>
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231 * <li>Execution will continue until either:
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232 * <ol>
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233 * <li>execution arrives at a node with the tag {@linkplain StandardSyntaxTag#STATEMENT
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234 * STATEMENT} when not nested in one or more function/method calls, <strong>or:</strong></li>
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235 * <li>execution arrives at a node to which a breakpoint is attached and when nested in one or
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236 * more function/method calls, <strong>or:</strong></li>
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237 * <li>execution completes.</li>
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238 * </ol>
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239 * <li>StepOver mode persists only through one resumption (i.e. {@code stepOverCount} steps),
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240 * and reverts by default to Continue mode.</li>
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241 * </ul>
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242 *
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243 * @param stepCount the number of times to perform StepInto before halting
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244 * @throws IllegalArgumentException if the specified number is {@code <= 0}
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245 */
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246 @TruffleBoundary
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247 void prepareStepOver(int stepCount) {
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248 if (stepCount <= 0) {
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249 throw new IllegalArgumentException();
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250 }
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251 debugContext.setStrategy(new StepOver(stepCount));
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252 }
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253
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254 /**
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255 * Creates a language-specific factory to produce instances of {@link AdvancedInstrumentRoot}
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256 * that, when executed, computes the result of a textual expression in the language; used to
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257 * create an
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258 * {@linkplain Instrument#create(AdvancedInstrumentResultListener, AdvancedInstrumentRootFactory, Class, String)
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259 * Advanced Instrument}.
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260 *
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261 * @param expr a guest language expression
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262 * @param resultListener optional listener for the result of each evaluation.
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263 * @return a new factory
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264 * @throws IOException if the factory cannot be created, for example if the expression is badly
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265 * formed.
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266 */
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267 AdvancedInstrumentRootFactory createAdvancedInstrumentRootFactory(Probe probe, String expr, AdvancedInstrumentResultListener resultListener) throws IOException {
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268 try {
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269 Class<? extends TruffleLanguage> langugageClass = ACCESSOR.findLanguage(probe);
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270 TruffleLanguage l = ACCESSOR.findLanguage(vm, langugageClass);
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271 DebugSupportProvider dsp = ACCESSOR.getDebugSupport(l);
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272 return dsp.createAdvancedInstrumentRootFactory(expr, resultListener);
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273 } catch (DebugSupportException ex) {
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274 throw new IOException(ex);
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275 }
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276 }
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277
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278 /**
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279 * A mode of user navigation from a current code location to another, e.g "step in" vs.
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280 * "step over".
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281 */
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282 private abstract class StepStrategy {
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283
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284 private DebugExecutionContext context;
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285 protected final String strategyName;
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286
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287 protected StepStrategy() {
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288 this.strategyName = getClass().getSimpleName();
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289 }
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290
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291 final String getName() {
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292 return strategyName;
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293 }
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294
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295 /**
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296 * Reconfigure the debugger so that when execution continues the program will halt at the
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297 * location specified by this strategy.
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298 */
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299 final void enable(DebugExecutionContext c, int stackDepth) {
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300 this.context = c;
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301 setStrategy(stackDepth);
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302 }
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303
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304 /**
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305 * Return the debugger to the default navigation mode.
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306 */
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307 final void disable() {
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308 unsetStrategy();
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309 }
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310
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311 @TruffleBoundary
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312 final void halt(Node astNode, MaterializedFrame mFrame, boolean before) {
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313 context.halt(astNode, mFrame, before, this.getClass().getSimpleName());
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314 }
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315
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316 @TruffleBoundary
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317 final void replaceStrategy(StepStrategy newStrategy) {
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318 context.setStrategy(newStrategy);
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319 }
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320
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321 @TruffleBoundary
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322 protected final void strategyTrace(String action, String format, Object... args) {
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323 if (TRACE) {
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324 context.contextTrace("%s (%s) %s", action, strategyName, String.format(format, args));
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325 }
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326 }
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327
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328 @TruffleBoundary
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329 protected final void suspendUserBreakpoints() {
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330 lineBreaks.setActive(false);
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331 tagBreaks.setActive(false);
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332 }
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333
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334 @SuppressWarnings("unused")
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335 protected final void restoreUserBreakpoints() {
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336 lineBreaks.setActive(true);
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337 tagBreaks.setActive(true);
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338 }
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339
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340 /**
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341 * Reconfigure the debugger so that when execution continues, it will do so using this mode
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342 * of navigation.
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343 */
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344 protected abstract void setStrategy(int stackDepth);
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345
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346 /**
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347 * Return to the debugger to the default mode of navigation.
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348 */
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349 protected abstract void unsetStrategy();
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350 }
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351
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352 /**
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353 * Strategy: the null stepping strategy.
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354 * <ul>
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355 * <li>User breakpoints are enabled.</li>
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356 * <li>Execution continues until either:
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357 * <ol>
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358 * <li>execution arrives at a node with attached user breakpoint, <strong>or:</strong></li>
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359 * <li>execution completes.</li>
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360 * </ol>
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361 * </ul>
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362 */
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363 private final class Continue extends StepStrategy {
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364
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365 @Override
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366 protected void setStrategy(int stackDepth) {
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367 }
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368
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369 @Override
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370 protected void unsetStrategy() {
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371 }
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372 }
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373
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374 /**
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375 * Strategy: per-statement stepping.
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376 * <ul>
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377 * <li>User breakpoints are enabled.</li>
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378 * <li>Execution continues until either:
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379 * <ol>
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380 * <li>execution <em>arrives</em> at a STATEMENT node, <strong>or:</strong></li>
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381 * <li>execution <em>returns</em> to a CALL node and the call stack is smaller then when
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382 * execution started, <strong>or:</strong></li>
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383 * <li>execution completes.</li>
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384 * </ol>
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385 * </ul>
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386 *
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387 * @see Debugger#prepareStepInto(int)
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388 */
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389 private final class StepInto extends StepStrategy {
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390 private int unfinishedStepCount;
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391
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392 StepInto(int stepCount) {
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393 super();
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394 this.unfinishedStepCount = stepCount;
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395 }
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396
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397 @Override
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398 protected void setStrategy(final int stackDepth) {
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399 Probe.setBeforeTagTrap(new SyntaxTagTrap(STEPPING_TAG) {
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400
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401 @Override
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402 public void tagTrappedAt(Node node, MaterializedFrame mFrame) {
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403 // HALT: just before statement
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404 --unfinishedStepCount;
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405 strategyTrace("TRAP BEFORE", "unfinished steps=%d", unfinishedStepCount);
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406 // Should run in fast path
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407 if (unfinishedStepCount <= 0) {
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408 halt(node, mFrame, true);
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409 }
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410 strategyTrace("RESUME BEFORE", "");
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411 }
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412 });
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413 Probe.setAfterTagTrap(new SyntaxTagTrap(CALL_TAG) {
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414
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415 @Override
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416 public void tagTrappedAt(Node node, MaterializedFrame mFrame) {
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417 --unfinishedStepCount;
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418 strategyTrace(null, "TRAP AFTER unfinished steps=%d", unfinishedStepCount);
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419 if (currentStackDepth() < stackDepth) {
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420 // HALT: just "stepped out"
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421 if (unfinishedStepCount <= 0) {
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422 halt(node, mFrame, false);
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423 }
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424 }
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425 strategyTrace("RESUME AFTER", "");
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426 }
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427 });
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428 }
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429
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430 @Override
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431 protected void unsetStrategy() {
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432 Probe.setBeforeTagTrap(null);
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433 Probe.setAfterTagTrap(null);
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434 }
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435 }
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436
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437 /**
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438 * Strategy: execution to nearest enclosing call site.
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439 * <ul>
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440 * <li>User breakpoints are enabled.</li>
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441 * <li>Execution continues until either:
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442 * <ol>
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443 * <li>execution arrives at a node with attached user breakpoint, <strong>or:</strong></li>
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444 * <li>execution <em>returns</em> to a CALL node and the call stack is smaller than when
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445 * execution started, <strong>or:</strong></li>
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446 * <li>execution completes.</li>
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447 * </ol>
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448 * </ul>
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449 *
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450 * @see Debugger#prepareStepOut()
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451 */
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452 private final class StepOut extends StepStrategy {
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453
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454 @Override
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455 protected void setStrategy(final int stackDepth) {
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456 Probe.setAfterTagTrap(new SyntaxTagTrap(CALL_TAG) {
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457
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458 @TruffleBoundary
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459 @Override
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460 public void tagTrappedAt(Node node, MaterializedFrame mFrame) {
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461 // HALT:
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462 final int currentStackDepth = currentStackDepth();
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diff changeset
463 strategyTrace("TRAP AFTER", "stackDepth: start=%d current=%d", stackDepth, currentStackDepth);
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diff changeset
464 if (currentStackDepth < stackDepth) {
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diff changeset
465 halt(node, mFrame, false);
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diff changeset
466 }
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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diff changeset
467 strategyTrace("RESUME AFTER", "");
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
468 }
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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diff changeset
469 });
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
470 }
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
471
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
472 @Override
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diff changeset
473 protected void unsetStrategy() {
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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diff changeset
474 Probe.setAfterTagTrap(null);
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475 }
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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476 }
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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diff changeset
477
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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diff changeset
478 /**
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diff changeset
479 * Strategy: per-statement stepping, so long as not nested in method calls (i.e. at original
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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diff changeset
480 * stack depth).
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
481 * <ul>
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482 * <li>User breakpoints are enabled.</li>
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
483 * <li>Execution continues until either:
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
484 * <ol>
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
485 * <li>execution arrives at a STATEMENT node with stack depth no more than when started
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
486 * <strong>or:</strong></li>
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487 * <li>the program completes.</li>
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
488 * </ol>
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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489 * </ul>
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diff changeset
490 */
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
491 private final class StepOver extends StepStrategy {
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492 private int unfinishedStepCount;
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diff changeset
493
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diff changeset
494 StepOver(int stepCount) {
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diff changeset
495 this.unfinishedStepCount = stepCount;
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diff changeset
496 }
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diff changeset
497
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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498 @Override
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diff changeset
499 protected void setStrategy(final int stackDepth) {
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diff changeset
500 Probe.setBeforeTagTrap(new SyntaxTagTrap(STEPPING_TAG) {
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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diff changeset
501
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diff changeset
502 @Override
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diff changeset
503 public void tagTrappedAt(Node node, MaterializedFrame mFrame) {
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504 final int currentStackDepth = currentStackDepth();
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diff changeset
505 if (currentStackDepth <= stackDepth) {
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
506 // HALT: stack depth unchanged or smaller; treat like StepInto
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diff changeset
507 --unfinishedStepCount;
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diff changeset
508 if (TRACE) {
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
509 strategyTrace("TRAP BEFORE", "unfinished steps=%d stackDepth start=%d current=%d", unfinishedStepCount, stackDepth, currentStackDepth);
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diff changeset
510 }
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diff changeset
511 // Test should run in fast path
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diff changeset
512 if (unfinishedStepCount <= 0) {
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diff changeset
513 halt(node, mFrame, true);
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diff changeset
514 }
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diff changeset
515 } else {
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parents:
diff changeset
516 // CONTINUE: Stack depth increased; don't count as a step
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diff changeset
517 strategyTrace("STEP INTO", "unfinished steps=%d stackDepth start=%d current=%d", unfinishedStepCount, stackDepth, currentStackDepth);
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diff changeset
518 // Stop treating like StepInto, start treating like StepOut
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diff changeset
519 replaceStrategy(new StepOverNested(unfinishedStepCount, stackDepth));
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diff changeset
520 }
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diff changeset
521 strategyTrace("RESUME BEFORE", "");
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diff changeset
522 }
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diff changeset
523 });
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parents:
diff changeset
524
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parents:
diff changeset
525 Probe.setAfterTagTrap(new SyntaxTagTrap(CALL_TAG) {
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diff changeset
526
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diff changeset
527 @Override
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diff changeset
528 public void tagTrappedAt(Node node, MaterializedFrame mFrame) {
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529 final int currentStackDepth = currentStackDepth();
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530 if (currentStackDepth < stackDepth) {
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diff changeset
531 // HALT: just "stepped out"
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parents:
diff changeset
532 --unfinishedStepCount;
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
533 strategyTrace("TRAP AFTER", "unfinished steps=%d stackDepth: start=%d current=%d", unfinishedStepCount, stackDepth, currentStackDepth);
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diff changeset
534 // Should run in fast path
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diff changeset
535 if (unfinishedStepCount <= 0) {
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diff changeset
536 halt(node, mFrame, false);
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diff changeset
537 }
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parents:
diff changeset
538 strategyTrace("RESUME AFTER", "");
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parents:
diff changeset
539 }
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540 }
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541 });
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542 }
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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543
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544 @Override
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545 protected void unsetStrategy() {
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546 Probe.setBeforeTagTrap(null);
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547 Probe.setAfterTagTrap(null);
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548 }
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549 }
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550
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551 /**
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552 * Strategy: per-statement stepping, not into method calls, in effect while at increased stack
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553 * depth
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554 * <ul>
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555 * <li>User breakpoints are enabled.</li>
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556 * <li>Execution continues until either:
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557 * <ol>
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558 * <li>execution arrives at a STATEMENT node with stack depth no more than when started
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559 * <strong>or:</strong></li>
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560 * <li>the program completes <strong>or:</strong></li>
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561 * </ol>
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562 * </ul>
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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563 */
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564 private final class StepOverNested extends StepStrategy {
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565 private int unfinishedStepCount;
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566 private final int startStackDepth;
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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567
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568 StepOverNested(int stepCount, int startStackDepth) {
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569 this.unfinishedStepCount = stepCount;
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570 this.startStackDepth = startStackDepth;
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571 }
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572
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573 @Override
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574 protected void setStrategy(final int stackDepth) {
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575 Probe.setBeforeTagTrap(new SyntaxTagTrap(STEPPING_TAG) {
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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576
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577 @Override
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578 public void tagTrappedAt(Node node, MaterializedFrame mFrame) {
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diff changeset
579 final int currentStackDepth = currentStackDepth();
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580 if (currentStackDepth <= startStackDepth) {
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581 // At original step depth (or smaller) after being nested
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582 --unfinishedStepCount;
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583 strategyTrace("TRAP AFTER", "unfinished steps=%d stackDepth start=%d current=%d", unfinishedStepCount, stackDepth, currentStackDepth);
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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584 if (unfinishedStepCount <= 0) {
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585 halt(node, mFrame, false);
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586 }
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diff changeset
587 // TODO (mlvdv) fixme for multiple steps
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588 strategyTrace("RESUME BEFORE", "");
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589 }
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590 }
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591 });
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592 }
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593
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594 @Override
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595 protected void unsetStrategy() {
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596 Probe.setBeforeTagTrap(null);
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597 }
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598 }
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599
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600 /**
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601 * Information and debugging state for a single Truffle execution (which make take place over
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602 * one or more suspended executions). This holds interaction state, for example what is
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603 * executing (e.g. some {@link Source}), what the execution mode is ("stepping" or
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604 * "continuing"). When not running, this holds a cache of the Truffle stack for this particular
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605 * execution, effectively hiding the Truffle stack for any currently suspended executions (down
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606 * the stack).
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607 */
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608 private final class DebugExecutionContext {
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609
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610 // Previous halted context in stack
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611 private final DebugExecutionContext predecessor;
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612
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613 // The current execution level; first is 0.
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614 private final int level; // Number of contexts suspended below
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615 private final Source source;
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616 private final int contextStackBase; // Where the stack for this execution starts
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617 private final List<String> warnings = new ArrayList<>();
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618
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619 private boolean running;
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620
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621 /**
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622 * The stepping strategy currently configured in the debugger.
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623 */
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624 private StepStrategy strategy;
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625
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626 /**
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627 * Where halted; null if running.
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628 */
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629 private Node haltedNode;
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630
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631 /**
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632 * Where halted; null if running.
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633 */
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634 private MaterializedFrame haltedFrame;
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635
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636 private DebugExecutionContext(Source executionSource, DebugExecutionContext previousContext) {
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637 this.source = executionSource;
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638 this.predecessor = previousContext;
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639 this.level = previousContext == null ? 0 : previousContext.level + 1;
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640
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641 // "Base" is the number of stack frames for all nested (halted) executions.
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642 this.contextStackBase = currentStackDepth();
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643 this.running = true;
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644 contextTrace("NEW CONTEXT");
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645 }
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646
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647 /**
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648 * Sets up a strategy for the next resumption of execution.
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649 *
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650 * @param stepStrategy
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651 */
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652 void setStrategy(StepStrategy stepStrategy) {
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653 if (this.strategy == null) {
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654 this.strategy = stepStrategy;
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655 this.strategy.enable(this, currentStackDepth());
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656 if (TRACE) {
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657 contextTrace("SET MODE <none>-->" + stepStrategy.getName());
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658 }
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659 } else {
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660 strategy.disable();
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661 strategy = stepStrategy;
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662 strategy.enable(this, currentStackDepth());
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663 contextTrace("SWITCH MODE %s-->%s", strategy.getName(), stepStrategy.getName());
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664 }
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665 }
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666
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667 void clearStrategy() {
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668 if (strategy != null) {
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669 final StepStrategy oldStrategy = strategy;
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670 strategy.disable();
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671 strategy = null;
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672 contextTrace("CLEAR MODE %s--><none>", oldStrategy.getName());
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673 }
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674 }
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675
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676 /**
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677 * Handle a program halt, caused by a breakpoint, stepping strategy, or other cause.
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678 *
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679 * @param astNode the guest language node at which execution is halted
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680 * @param mFrame the current execution frame where execution is halted
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681 * @param before {@code true} if halted <em>before</em> the node, else <em>after</em>.
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682 */
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683 @TruffleBoundary
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684 void halt(Node astNode, MaterializedFrame mFrame, boolean before, String haltReason) {
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685 assert running;
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686 assert haltedNode == null;
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687 assert haltedFrame == null;
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688
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689 haltedNode = astNode;
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690 haltedFrame = mFrame;
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691 running = false;
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692
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693 clearStrategy();
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diff changeset
694
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
695 // Clean up, just in cased the one-shot breakpoints got confused
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
696 lineBreaks.disposeOneShots();
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
697
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
698 final int contextStackDepth = currentStackDepth() - contextStackBase;
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
699 if (TRACE) {
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
700 final String reason = haltReason == null ? "" : haltReason + "";
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
701 final String where = before ? "BEFORE" : "AFTER";
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
702 contextTrace("HALT %s : (%s) stack base=%d", where, reason, contextStackBase);
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
703 contextTrace("CURRENT STACK:");
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
704 // printStack(OUT);
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
705 }
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
706
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
707 final List<String> recentWarnings = new ArrayList<>(warnings);
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
708 warnings.clear();
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
709
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
710 try {
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
711 // Pass control to the debug client with current execution suspended
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
712 ACCESSOR.dispatchEvent(vm, new SuspendedEvent(Debugger.this, astNode, mFrame, recentWarnings, contextStackDepth));
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
713 // Debug client finished normally, execution resumes
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
714 // Presume that the client has set a new strategy (or default to Continue)
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
715 running = true;
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
716 } catch (KillException e) {
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
717 contextTrace("KILL");
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
718 throw e;
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
719 } finally {
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
720 haltedNode = null;
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
721 haltedFrame = null;
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
722 }
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
723
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
724 }
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
725
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
726 void logWarning(String warning) {
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
727 warnings.add(warning);
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
728 }
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
729
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
730 /*
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
731 * private void printStack(PrintStream stream) { getFrames(); if (frames == null) {
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
732 * stream.println("<empty stack>"); } else { final Visualizer visualizer =
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
733 * provider.getVisualizer(); for (FrameDebugDescription frameDesc : frames) { final
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
734 * StringBuilder sb = new StringBuilder(" frame " + Integer.toString(frameDesc.index()));
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
735 * sb.append(":at " + visualizer.displaySourceLocation(frameDesc.node())); sb.append(":in '"
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
736 * + visualizer.displayMethodName(frameDesc.node()) + "'"); stream.println(sb.toString()); }
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
737 * } }
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
738 */
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
739
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
740 void contextTrace(String format, Object... args) {
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
741 if (TRACE) {
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
742 final String srcName = (source != null) ? source.getName() : "no source";
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
743 Debugger.trace("<%d> %s (%s)", level, String.format(format, args), srcName);
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
744 }
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
745 }
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
746 }
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
747
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
748 // TODO (mlvdv) wish there were fast-path access to stack depth
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
749 /**
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
750 * Depth of current Truffle stack, including nested executions. Includes the top/current frame,
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
751 * which the standard iterator does not count: {@code 0} if no executions.
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
752 */
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
753 @TruffleBoundary
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
754 private static int currentStackDepth() {
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
755 final int[] count = {0};
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
756 Truffle.getRuntime().iterateFrames(new FrameInstanceVisitor<Void>() {
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
757 @Override
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
758 public Void visitFrame(FrameInstance frameInstance) {
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
759 count[0] = count[0] + 1;
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
760 return null;
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
761 }
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
762 });
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
763 return count[0] == 0 ? 0 : count[0] + 1;
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
764
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
765 }
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
766
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
767 void executionStarted(Source source) {
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
768 Source execSource = source;
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
769 if (execSource == null) {
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
770 execSource = lastSource;
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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771 } else {
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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772 lastSource = execSource;
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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773 }
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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774 // Push a new execution context onto stack
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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diff changeset
775 debugContext = new DebugExecutionContext(execSource, debugContext);
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diff changeset
776 prepareContinue();
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777 debugContext.contextTrace("START EXEC ");
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778 ACCESSOR.dispatchEvent(vm, new ExecutionEvent(this));
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parents:
diff changeset
779 }
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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780
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
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781 void executionEnded() {
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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782 lineBreaks.disposeOneShots();
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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783 tagBreaks.disposeOneShots();
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784 debugContext.clearStrategy();
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
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785 debugContext.contextTrace("END EXEC ");
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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786 // Pop the stack of execution contexts.
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787 debugContext = debugContext.predecessor;
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788 }
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789
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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790 private static final class AccessorDebug extends Accessor {
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791 @Override
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792 protected Closeable executionStart(TruffleVM vm, Debugger[] fillIn, Source s) {
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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793 final Debugger d;
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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794 if (fillIn[0] == null) {
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795 d = fillIn[0] = new Debugger(vm);
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diff changeset
796 } else {
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diff changeset
797 d = fillIn[0];
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798 }
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
799 d.executionStarted(s);
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800 return new Closeable() {
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
801 @Override
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diff changeset
802 public void close() throws IOException {
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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803 d.executionEnded();
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804 }
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805 };
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806 }
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807
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808 @Override
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809 protected Class<? extends TruffleLanguage> findLanguage(Probe probe) {
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diff changeset
810 return super.findLanguage(probe);
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811 }
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diff changeset
812
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813 @Override
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814 protected TruffleLanguage findLanguage(TruffleVM vm, Class<? extends TruffleLanguage> languageClass) {
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diff changeset
815 return super.findLanguage(vm, languageClass);
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816 }
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diff changeset
817
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818 @Override
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diff changeset
819 protected DebugSupportProvider getDebugSupport(TruffleLanguage l) {
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diff changeset
820 return super.getDebugSupport(l);
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diff changeset
821 }
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parents:
diff changeset
822
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parents:
diff changeset
823 @Override
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diff changeset
824 protected void dispatchEvent(TruffleVM vm, Object event) {
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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diff changeset
825 super.dispatchEvent(vm, event);
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diff changeset
826 }
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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diff changeset
827 }
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parents:
diff changeset
828
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
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diff changeset
829 // registers into Accessor.DEBUG
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diff changeset
830 private static final AccessorDebug ACCESSOR = new AccessorDebug();
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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diff changeset
831 }