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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultDebugManager.java @ 13733:4d47e9c0df23

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Truffle/Instrumentation: Javadoc and cleanup
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Wed, 22 Jan 2014 20:28:52 -0800
parents fbf448929260
children
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1 /*
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2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api.impl;
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26
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27 import java.util.*;
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28
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29 import com.oracle.truffle.api.*;
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30 import com.oracle.truffle.api.frame.*;
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31 import com.oracle.truffle.api.nodes.*;
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32 import com.oracle.truffle.api.nodes.instrument.InstrumentationProbeNode.ProbeChain;
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33 import com.oracle.truffle.api.source.*;
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34
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35 /**
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36 * A minimal, language-agnostic implementation that tracks loaded sources, and keeps maps describing
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37 * what locations in the source have instrumentation available.
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38 */
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39 public class DefaultDebugManager implements DebugManager {
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40
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41 private final Set<Source> loadedSources = new HashSet<>();
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42
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43 private Source beingLoaded = null;
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44
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45 /**
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46 * Map: SourceSection ==> probe chain associated with that source section in an AST.
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47 */
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48 private final Map<SourceSection, ProbeChain> srcToProbeChain = new HashMap<>();
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49
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50 /**
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51 * Map: Source lines ==> probe chains associated with source sections starting on the line.
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52 */
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53 private final Map<SourceLineLocation, Set<ProbeChain>> lineToProbeChains = new HashMap<>();
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54
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55 private final ExecutionContext context;
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56
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57 public DefaultDebugManager(ExecutionContext context) {
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58 this.context = context;
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59 }
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60
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61 /**
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62 * Gets the {@linkplain ProbeChain probe} associated with a particular {@link SourceSection
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63 * source location}, creating a new one if needed. There should only be one probe associated
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64 * with each {@linkplain SourceSection source location}.
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65 */
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66 public ProbeChain getProbeChain(SourceSection sourceSection) {
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67 assert sourceSection != null;
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68 assert sourceSection.getSource().equals(beingLoaded);
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69
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70 ProbeChain probeChain = srcToProbeChain.get(sourceSection);
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71
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72 if (probeChain != null) {
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73 return probeChain;
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74 }
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75 probeChain = new ProbeChain(context, sourceSection, null);
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76
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77 // Register new ProbeChain by unique SourceSection
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78 srcToProbeChain.put(sourceSection, probeChain);
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79
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80 // Register new ProbeChain by source line, there may be more than one
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81 // Create line location for map key
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82 final SourceLineLocation lineLocation = new SourceLineLocation(sourceSection.getSource(), sourceSection.getStartLine());
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83
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84 Set<ProbeChain> probeChains = lineToProbeChains.get(lineLocation);
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85 if (probeChains == null) {
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86 probeChains = new HashSet<>();
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87 lineToProbeChains.put(lineLocation, probeChains);
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88 }
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89 probeChains.add(probeChain);
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90
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91 return probeChain;
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92 }
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93
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94 public void notifyStartLoading(Source source) {
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95 assert beingLoaded == null;
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96 beingLoaded = source;
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97 }
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98
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99 public void notifyFinishedLoading(Source source) {
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100 assert source == beingLoaded;
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101 loadedSources.add(source);
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102 beingLoaded = null;
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103 }
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104
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105 public void haltedAt(Node astNode, MaterializedFrame frame) {
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106 }
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107
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108 }