annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/debug/LineBreakpointFactory.java @ 22157:dc83cc1f94f2

Using fully qualified imports
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 16 Sep 2015 11:33:22 +0200
parents c2cb9f1c8688
children 1c0f490984d5
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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 com.oracle.truffle.api.Assumption;
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28 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
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29 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
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30 import com.oracle.truffle.api.Truffle;
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31 import static com.oracle.truffle.api.debug.Breakpoint.State.DISABLED;
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32 import static com.oracle.truffle.api.debug.Breakpoint.State.DISABLED_UNRESOLVED;
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33 import static com.oracle.truffle.api.debug.Breakpoint.State.DISPOSED;
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34 import static com.oracle.truffle.api.debug.Breakpoint.State.ENABLED;
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35 import static com.oracle.truffle.api.debug.Breakpoint.State.ENABLED_UNRESOLVED;
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36 import com.oracle.truffle.api.debug.Debugger.BreakpointCallback;
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37 import com.oracle.truffle.api.debug.Debugger.WarningLog;
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38 import com.oracle.truffle.api.frame.VirtualFrame;
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39 import com.oracle.truffle.api.instrument.AdvancedInstrumentResultListener;
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40 import com.oracle.truffle.api.instrument.Instrument;
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41 import com.oracle.truffle.api.instrument.Probe;
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42 import com.oracle.truffle.api.instrument.StandardSyntaxTag;
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43 import com.oracle.truffle.api.instrument.SyntaxTag;
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44 import com.oracle.truffle.api.instrument.impl.DefaultProbeListener;
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45 import com.oracle.truffle.api.instrument.impl.DefaultStandardInstrumentListener;
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46 import com.oracle.truffle.api.nodes.InvalidAssumptionException;
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47 import com.oracle.truffle.api.nodes.Node;
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48 import com.oracle.truffle.api.source.LineLocation;
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49 import com.oracle.truffle.api.source.SourceSection;
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50 import com.oracle.truffle.api.utilities.CyclicAssumption;
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51 import java.io.IOException;
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52 import java.io.PrintStream;
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53 import java.util.ArrayList;
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54 import java.util.Collections;
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55 import java.util.Comparator;
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56 import java.util.HashMap;
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57 import java.util.List;
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58 import java.util.Map;
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59 import java.util.Map.Entry;
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60
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61 //TODO (mlvdv) some common functionality could be factored out of this and TagBreakpointSupport
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62
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63 /**
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64 * Support class for creating and managing all existing ordinary (user visible) line breakpoints.
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65 * <p>
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66 * Notes:
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67 * <ol>
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68 * <li>Line breakpoints can only be set at nodes tagged as {@link StandardSyntaxTag#STATEMENT}.</li>
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69 * <li>A newly created breakpoint looks for probes matching the location, attaches to them if found
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70 * by installing an {@link Instrument} that calls back to the breakpoint.</li>
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71 * <li>When Truffle "splits" or otherwise copies an AST, any attached {@link Instrument} will be
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72 * copied along with the rest of the AST and will call back to the same breakpoint.</li>
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73 * <li>When notification is received of a new Node being tagged as a statement, and if a
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74 * breakpoint's line location matches the Probe's line location, then the breakpoint will attach a
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75 * new Instrument at the probe to activate the breakpoint at that location.</li>
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76 * <li>A breakpoint may have multiple Instruments deployed, one attached to each Probe that matches
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77 * the breakpoint's line location; this might happen when a source is reloaded.</li>
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78 * </ol>
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79 *
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80 */
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81 final class LineBreakpointFactory {
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82
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83 private static final boolean TRACE = false;
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84 private static final PrintStream OUT = System.out;
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85
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86 private static final String BREAKPOINT_NAME = "LINE BREAKPOINT";
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87
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88 @TruffleBoundary
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89 private static void trace(String format, Object... args) {
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90 if (TRACE) {
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91 OUT.println(String.format("%s: %s", BREAKPOINT_NAME, String.format(format, args)));
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92 }
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93 }
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94
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95 private static final Comparator<Entry<LineLocation, LineBreakpointImpl>> BREAKPOINT_COMPARATOR = new Comparator<Entry<LineLocation, LineBreakpointImpl>>() {
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96
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97 @Override
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98 public int compare(Entry<LineLocation, LineBreakpointImpl> entry1, Entry<LineLocation, LineBreakpointImpl> entry2) {
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99 final LineLocation line1 = entry1.getKey();
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100 final LineLocation line2 = entry2.getKey();
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101 final int nameOrder = line1.getSource().getShortName().compareTo(line2.getSource().getShortName());
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102 if (nameOrder != 0) {
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103 return nameOrder;
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104 }
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105 return Integer.compare(line1.getLineNumber(), line2.getLineNumber());
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106 }
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107 };
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108
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109 private final BreakpointCallback breakpointCallback;
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110 private final WarningLog warningLog;
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111
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112 /**
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113 * Map: Source lines ==> attached breakpoints. There may be no more than one line breakpoint
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114 * associated with a line.
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115 */
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116 private final Map<LineLocation, LineBreakpointImpl> lineToBreakpoint = new HashMap<>();
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117
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118 /**
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119 * A map of {@link LineLocation} to a collection of {@link Probe}s. This list must be
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120 * initialized and filled prior to being used by this class.
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121 */
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122 private final LineToProbesMap lineToProbesMap;
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123
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124 /**
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125 * Globally suspends all line breakpoint activity when {@code false}, ignoring whether
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126 * individual breakpoints are enabled.
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127 */
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128 @CompilationFinal private boolean breakpointsActive = true;
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129 private final CyclicAssumption breakpointsActiveUnchanged = new CyclicAssumption(BREAKPOINT_NAME + " globally active");
22110
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130 private final Debugger debugger;
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131
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132 LineBreakpointFactory(Debugger debugger, BreakpointCallback breakpointCallback, final WarningLog warningLog) {
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133 this.debugger = debugger;
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134 this.breakpointCallback = breakpointCallback;
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135 this.warningLog = warningLog;
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136
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137 lineToProbesMap = new LineToProbesMap();
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138 lineToProbesMap.install();
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139
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140 Probe.addProbeListener(new DefaultProbeListener() {
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141
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142 @Override
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143 public void probeTaggedAs(Probe probe, SyntaxTag tag, Object tagValue) {
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144 if (tag == StandardSyntaxTag.STATEMENT) {
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145 final SourceSection sourceSection = probe.getProbedSourceSection();
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146 if (sourceSection != null) {
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147 final LineLocation lineLocation = sourceSection.getLineLocation();
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148 if (lineLocation != null) {
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149 // A Probe with line location tagged STATEMENT we haven't seen before.
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150 final LineBreakpointImpl breakpoint = lineToBreakpoint.get(lineLocation);
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151 if (breakpoint != null) {
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152 try {
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153 breakpoint.attach(probe);
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154 } catch (IOException e) {
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155 warningLog.addWarning(BREAKPOINT_NAME + " failure attaching to newly tagged Probe: " + e.getMessage());
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156 if (TRACE) {
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157 OUT.println(BREAKPOINT_NAME + " failure: " + e.getMessage());
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158 }
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159 }
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160 }
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161 }
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162 }
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163 }
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164 }
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165 });
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166 }
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167
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168 /**
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169 * Globally enables line breakpoint activity; all breakpoints are ignored when set to
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170 * {@code false}. When set to {@code true}, the enabled/disabled status of each breakpoint
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171 * determines whether it will trigger when flow of execution reaches it.
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172 *
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173 * @param breakpointsActive
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174 */
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175 void setActive(boolean breakpointsActive) {
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176 if (this.breakpointsActive != breakpointsActive) {
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177 breakpointsActiveUnchanged.invalidate();
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178 this.breakpointsActive = breakpointsActive;
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179 }
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180 }
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181
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182 /**
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183 * Gets all current line breakpoints,regardless of status; sorted and modification safe.
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184 */
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185 List<LineBreakpoint> getAll() {
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186 ArrayList<Entry<LineLocation, LineBreakpointImpl>> entries = new ArrayList<>(lineToBreakpoint.entrySet());
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187 Collections.sort(entries, BREAKPOINT_COMPARATOR);
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188
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189 final ArrayList<LineBreakpoint> breakpoints = new ArrayList<>(entries.size());
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190 for (Entry<LineLocation, LineBreakpointImpl> entry : entries) {
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191 breakpoints.add(entry.getValue());
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192 }
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193 return breakpoints;
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194 }
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195
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196 /**
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197 * Creates a new line breakpoint if one doesn't already exist. If one does exist, then resets
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198 * the <em>ignore count</em>.
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199 *
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200 * @param lineLocation where to set the breakpoint
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201 * @param ignoreCount number of initial hits before the breakpoint starts causing breaks.
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202 * @param oneShot whether the breakpoint should dispose itself after one hit
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203 * @return a possibly new breakpoint
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204 * @throws IOException if a breakpoint already exists at the location and the ignore count is
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205 * the same
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206 */
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207 LineBreakpoint create(int ignoreCount, LineLocation lineLocation, boolean oneShot) throws IOException {
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208
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209 LineBreakpointImpl breakpoint = lineToBreakpoint.get(lineLocation);
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210
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211 if (breakpoint == null) {
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212 breakpoint = new LineBreakpointImpl(ignoreCount, lineLocation, oneShot);
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213
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214 if (TRACE) {
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215 trace("NEW " + breakpoint.getShortDescription());
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216 }
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217
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218 lineToBreakpoint.put(lineLocation, breakpoint);
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219
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220 for (Probe probe : lineToProbesMap.findProbes(lineLocation)) {
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221 if (probe.isTaggedAs(StandardSyntaxTag.STATEMENT)) {
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222 breakpoint.attach(probe);
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223 break;
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224 }
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225 }
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226 } else {
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227 if (ignoreCount == breakpoint.getIgnoreCount()) {
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228 throw new IOException(BREAKPOINT_NAME + " already set at line " + lineLocation);
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229 }
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230 breakpoint.setIgnoreCount(ignoreCount);
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231 if (TRACE) {
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232 trace("CHANGED ignoreCount %s", breakpoint.getShortDescription());
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233 }
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234 }
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235 return breakpoint;
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236 }
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237
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238 /**
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239 * Returns the {@link LineBreakpoint} for a given line. There should only ever be one breakpoint
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240 * per line.
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241 *
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242 * @param lineLocation The {@link LineLocation} to get the breakpoint for.
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243 * @return The breakpoint for the given line.
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244 */
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245 LineBreakpoint get(LineLocation lineLocation) {
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246 return lineToBreakpoint.get(lineLocation);
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247 }
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248
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249 /**
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250 * Removes the associated instrumentation for all one-shot breakpoints only.
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251 */
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252 void disposeOneShots() {
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253 List<LineBreakpointImpl> breakpoints = new ArrayList<>(lineToBreakpoint.values());
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254 for (LineBreakpointImpl breakpoint : breakpoints) {
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255 if (breakpoint.isOneShot()) {
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256 breakpoint.dispose();
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257 }
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258 }
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259 }
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260
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261 /**
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262 * Removes all knowledge of a breakpoint, presumed disposed.
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263 */
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264 private void forget(LineBreakpointImpl breakpoint) {
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265 lineToBreakpoint.remove(breakpoint.getLineLocation());
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266 }
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267
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268 /**
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269 * Concrete representation of a line breakpoint, implemented by attaching an instrument to a
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270 * probe at the designated source location.
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271 */
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272 private final class LineBreakpointImpl extends LineBreakpoint implements AdvancedInstrumentResultListener {
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273
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274 private static final String SHOULD_NOT_HAPPEN = "LineBreakpointImpl: should not happen";
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275
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276 private final LineLocation lineLocation;
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277
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278 // Cached assumption that the global status of line breakpoint activity has not changed.
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279 private Assumption breakpointsActiveAssumption;
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280
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281 // Whether this breakpoint is enable/disabled
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282 @CompilationFinal private boolean isEnabled;
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283 private Assumption enabledUnchangedAssumption;
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284
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285 private String conditionExpr;
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286
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287 /**
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288 * The instrument(s) that this breakpoint currently has attached to a {@link Probe}:
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289 * {@code null} if not attached.
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290 */
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291 private List<Instrument> instruments = new ArrayList<>();
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292
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293 public LineBreakpointImpl(int ignoreCount, LineLocation lineLocation, boolean oneShot) {
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294 super(ENABLED_UNRESOLVED, ignoreCount, oneShot);
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295 this.lineLocation = lineLocation;
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296
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297 this.breakpointsActiveAssumption = LineBreakpointFactory.this.breakpointsActiveUnchanged.getAssumption();
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298 this.isEnabled = true;
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299 this.enabledUnchangedAssumption = Truffle.getRuntime().createAssumption(BREAKPOINT_NAME + " enabled state unchanged");
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300 }
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301
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302 @Override
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303 public boolean isEnabled() {
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304 return isEnabled;
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305 }
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306
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307 @Override
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308 public void setEnabled(boolean enabled) {
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309 if (enabled != isEnabled) {
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310 switch (getState()) {
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311 case ENABLED:
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312 assert !enabled : SHOULD_NOT_HAPPEN;
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313 doSetEnabled(false);
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314 changeState(DISABLED);
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315 break;
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316 case ENABLED_UNRESOLVED:
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Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
317 assert !enabled : SHOULD_NOT_HAPPEN;
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
318 doSetEnabled(false);
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
319 changeState(DISABLED_UNRESOLVED);
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
320 break;
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
321 case DISABLED:
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
322 assert enabled : SHOULD_NOT_HAPPEN;
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
323 doSetEnabled(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
324 changeState(ENABLED);
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
325 break;
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
326 case DISABLED_UNRESOLVED:
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
327 assert enabled : SHOULD_NOT_HAPPEN;
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
328 doSetEnabled(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
329 changeState(DISABLED_UNRESOLVED);
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
330 break;
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
331 case DISPOSED:
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
332 assert false : "breakpoint disposed";
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
333 break;
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
334 default:
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
335 assert false : SHOULD_NOT_HAPPEN;
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
336 break;
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
337 }
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
338 }
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
339 }
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
340
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
341 @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
342 public void setCondition(String expr) throws IOException {
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
343 if (this.conditionExpr != null || expr != 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
344 // De-instrument the Probes instrumented by this breakpoint
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
345 final ArrayList<Probe> probes = new ArrayList<>();
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
346 for (Instrument instrument : instruments) {
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
347 probes.add(instrument.getProbe());
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
348 instrument.dispose();
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
349 }
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
350 instruments.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
351 this.conditionExpr = expr;
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
352 // Re-instrument the probes previously instrumented
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
353 for (Probe probe : probes) {
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
354 attach(probe);
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
355 }
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
356 }
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
357 }
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
358
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
359 @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
360 public String getCondition() {
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
361 return conditionExpr;
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
362 }
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
363
22011
95d5d6a93968 add more truffle boundaries
Andreas Woess <andreas.woess@oracle.com>
parents: 22003
diff changeset
364 @TruffleBoundary
22003
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
365 @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
366 public void dispose() {
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
367 if (getState() != DISPOSED) {
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
368 for (Instrument instrument : instruments) {
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
369 instrument.dispose();
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
370 }
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
371 changeState(DISPOSED);
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
372 LineBreakpointFactory.this.forget(this);
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
373 }
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
374 }
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
375
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
376 private void attach(Probe newProbe) throws IOException {
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
377 if (getState() == DISPOSED) {
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
378 throw new IllegalStateException("Attempt to attach a disposed " + BREAKPOINT_NAME);
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
379 }
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
380 Instrument newInstrument = 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
381 if (conditionExpr == 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
382 newInstrument = Instrument.create(new UnconditionalLineBreakInstrumentListener(), BREAKPOINT_NAME);
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
383 } else {
22110
c2cb9f1c8688 Replacing the langClass.newInstance() hack in Debugger with proper way to obtain the language instance
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents: 22066
diff changeset
384 newInstrument = Instrument.create(this, debugger.createAdvancedInstrumentRootFactory(newProbe, conditionExpr, this), Boolean.class, BREAKPOINT_NAME);
22003
5bc7f7b867ab Making debugger always on for each TruffleVM execution. Introducing EventConsumer to process such debugger events. Requesting each RootNode to be associated with a TruffleLanguage, so debugger can find out proper context for each Node where executions gets suspended.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
parents:
diff changeset
385 }
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
386 newProbe.attach(newInstrument);
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
387 instruments.add(newInstrument);
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
388 changeState(isEnabled ? ENABLED : DISABLED);
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
389 }
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
390
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
391 private void doSetEnabled(boolean enabled) {
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
392 if (this.isEnabled != enabled) {
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
393 enabledUnchangedAssumption.invalidate();
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
394 this.isEnabled = enabled;
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395 }
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396 }
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397
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398 @TruffleBoundary
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399 private String getShortDescription() {
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400 return BREAKPOINT_NAME + "@" + getLineLocation().getShortDescription();
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401 }
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402
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403 private void changeState(State after) {
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404 if (TRACE) {
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405 trace("STATE %s-->%s %s", getState().getName(), after.getName(), getShortDescription());
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406 }
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407 setState(after);
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408 }
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409
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410 private void doBreak(Node node, VirtualFrame vFrame) {
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411 if (incrHitCountCheckIgnore()) {
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412 breakpointCallback.haltedAt(node, vFrame.materialize(), BREAKPOINT_NAME);
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413 }
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414 }
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415
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416 /**
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417 * Receives notification from the attached instrument that execution is about to enter node
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418 * where the breakpoint is set. Designed so that when in the fast path, there is either an
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419 * unconditional "halt" call to the debugger or nothing.
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420 */
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421 private void nodeEnter(Node astNode, VirtualFrame vFrame) {
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422
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423 // Deopt if the global active/inactive flag has changed
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424 try {
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425 this.breakpointsActiveAssumption.check();
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426 } catch (InvalidAssumptionException ex) {
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427 this.breakpointsActiveAssumption = LineBreakpointFactory.this.breakpointsActiveUnchanged.getAssumption();
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428 }
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429
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430 // Deopt if the enabled/disabled state of this breakpoint has changed
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431 try {
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432 this.enabledUnchangedAssumption.check();
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433 } catch (InvalidAssumptionException ex) {
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434 this.enabledUnchangedAssumption = Truffle.getRuntime().createAssumption("LineBreakpoint enabled state unchanged");
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435 }
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436
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437 if (LineBreakpointFactory.this.breakpointsActive && this.isEnabled) {
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438 if (isOneShot()) {
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439 dispose();
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440 }
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diff changeset
441 LineBreakpointImpl.this.doBreak(astNode, vFrame);
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442 }
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443 }
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444
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445 public void notifyResult(Node node, VirtualFrame vFrame, Object result) {
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446 final boolean condition = (Boolean) result;
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447 if (TRACE) {
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448 trace("breakpoint condition = %b %s", condition, getShortDescription());
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449 }
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450 if (condition) {
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451 nodeEnter(node, vFrame);
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452 }
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453 }
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diff changeset
454
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455 public void notifyFailure(Node node, VirtualFrame vFrame, RuntimeException ex) {
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diff changeset
456 addExceptionWarning(ex);
22003
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diff changeset
457 if (TRACE) {
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diff changeset
458 trace("breakpoint failure = %s %s", ex, getShortDescription());
22003
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459 }
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460 // Take the breakpoint if evaluation fails.
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diff changeset
461 nodeEnter(node, vFrame);
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462 }
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diff changeset
463
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464 @TruffleBoundary
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465 private void addExceptionWarning(RuntimeException ex) {
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466 warningLog.addWarning(String.format("Exception in %s: %s", getShortDescription(), ex.getMessage()));
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467 }
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468
22003
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469 @Override
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470 public String getLocationDescription() {
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471 return "Line: " + lineLocation.getShortDescription();
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472 }
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473
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474 @Override
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475 public LineLocation getLineLocation() {
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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476 return lineLocation;
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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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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
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478
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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479 private final class UnconditionalLineBreakInstrumentListener extends DefaultStandardInstrumentListener {
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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480
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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481 @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>
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482 public void enter(Probe probe, Node node, VirtualFrame vFrame) {
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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483 LineBreakpointImpl.this.nodeEnter(node, vFrame);
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:
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484 }
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:
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485 }
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:
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486 }
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:
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487
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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488 }