Mercurial > hg > truffle
annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/debug/SuspendedEvent.java @ 22008:02e4cf046653
Providing a bit more meaningful documentation to our recent debugging improvements
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
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date | Wed, 22 Jul 2015 14:25:03 +0200 |
parents | 5bc7f7b867ab |
children | f879b1fe3773 |
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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.
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1 /* |
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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.
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2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
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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.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
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4 * |
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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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
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5 * This code is free software; you can redistribute it and/or modify it |
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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6 * under the terms of the GNU General Public License version 2 only, as |
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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7 * published by the Free Software Foundation. Oracle designates 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>
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8 * particular file as subject to the "Classpath" exception as provided |
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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9 * by Oracle in the LICENSE file that accompanied this code. |
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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10 * |
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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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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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.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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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15 * accompanied this code). |
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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16 * |
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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17 * You should have received a copy of the GNU General Public License version |
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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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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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20 * |
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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.
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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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22 * or visit www.oracle.com if you need additional information or have any |
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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.
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23 * questions. |
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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24 */ |
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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25 package com.oracle.truffle.api.debug; |
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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26 |
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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27 import com.oracle.truffle.api.CompilerDirectives; |
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28 import com.oracle.truffle.api.Truffle; |
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29 import com.oracle.truffle.api.frame.FrameInstance; |
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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.
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30 import com.oracle.truffle.api.frame.FrameInstanceVisitor; |
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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.
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31 import com.oracle.truffle.api.frame.MaterializedFrame; |
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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.
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32 import com.oracle.truffle.api.instrument.*; |
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33 import com.oracle.truffle.api.nodes.Node; |
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34 import com.oracle.truffle.api.vm.TruffleVM; |
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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.
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35 import com.oracle.truffle.api.vm.TruffleVM.Builder; |
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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.
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36 |
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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.
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37 import java.util.ArrayList; |
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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.
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38 import java.util.Collections; |
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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.
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39 import java.util.List; |
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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.
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40 |
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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.
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41 /** |
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42 * This event is delivered to all {@link Builder#onEvent(com.oracle.truffle.api.vm.EventConsumer) |
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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.
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43 * registered event handlers} when an execution is suspended on a |
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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44 * {@link Debugger#setLineBreakpoint(int, com.oracle.truffle.api.source.LineLocation, boolean) |
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45 * breakpoint} or during {@link #prepareStepInto(int) stepping}. Methods in this event can only be |
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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.
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46 * used while the handlers process the event. Then the state of the event becomes invalid and |
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Providing a bit more meaningful documentation to our recent debugging improvements
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47 * subsequent calls to the event methods yield {@link IllegalStateException}. One can call |
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48 * {@link #getDebugger()} and keep reference to it for as long as necessary. |
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49 */ |
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50 public final class SuspendedEvent { |
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51 private final List<String> recentWarnings; |
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52 private final MaterializedFrame mFrame; |
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53 private final Node astNode; |
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54 private final List<FrameInstance> frames; |
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55 private final Debugger debugger; |
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56 |
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57 SuspendedEvent(Debugger prepares, Node astNode, MaterializedFrame mFrame, List<String> recentWarnings, final int stackDepth) { |
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58 this.debugger = prepares; |
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59 this.astNode = astNode; |
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60 this.mFrame = mFrame; |
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61 this.recentWarnings = recentWarnings; |
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62 |
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63 this.frames = new ArrayList<>(); |
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64 // Map the Truffle stack for this execution, ignore nested executions |
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65 // The top (current) frame is not produced by the iterator. |
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66 frames.add(Truffle.getRuntime().getCurrentFrame()); |
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67 Truffle.getRuntime().iterateFrames(new FrameInstanceVisitor<FrameInstance>() { |
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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.
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68 int frameCount = 1; |
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69 |
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70 @Override |
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71 public FrameInstance visitFrame(FrameInstance frameInstance) { |
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72 if (frameCount < stackDepth) { |
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73 frames.add(frameInstance); |
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74 frameCount++; |
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75 return null; |
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76 } |
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77 return frameInstance; |
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78 } |
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79 }); |
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80 |
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81 } |
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82 |
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83 /** |
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84 * Debugger associated with the just suspended execution. This debugger remains valid after the |
22003
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85 * event is processed, it is possible and suggested to keep a reference to it and use it any |
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86 * time later when evaluating sources in the {@link TruffleVM}. |
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87 * |
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88 * @return instance of debugger associated with the just suspended execution and any subsequent |
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89 * ones in the same {@link TruffleVM}. |
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90 */ |
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91 public Debugger getDebugger() { |
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92 return debugger; |
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93 } |
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94 |
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95 public Node getNode() { |
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96 return astNode; |
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97 } |
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98 |
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99 public MaterializedFrame getFrame() { |
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100 return mFrame; |
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101 } |
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102 |
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103 public List<String> getRecentWarnings() { |
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104 return Collections.unmodifiableList(recentWarnings); |
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105 } |
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106 |
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107 /** |
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108 * Gets the stack frames from the currently halted {@link TruffleVM} execution. |
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109 * |
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110 * @return list of stack frames |
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111 */ |
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112 @CompilerDirectives.TruffleBoundary |
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113 public List<FrameInstance> getStack() { |
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114 return Collections.unmodifiableList(frames); |
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115 } |
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116 |
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117 /** |
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118 * Prepare to execute in Continue mode when guest language program execution resumes. In this |
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119 * mode: |
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120 * <ul> |
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121 * <li>Execution will continue until either: |
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122 * <ol> |
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123 * <li>execution arrives at a node to which an enabled breakpoint is attached, |
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124 * <strong>or:</strong></li> |
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125 * <li>execution completes.</li> |
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126 * </ol> |
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127 * </ul> |
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128 */ |
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129 public void prepareContinue() { |
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130 debugger.prepareContinue(); |
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131 } |
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132 |
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133 /** |
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134 * Prepare to execute in StepInto mode when guest language program execution resumes. In this |
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135 * mode: |
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136 * <ul> |
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137 * <li>User breakpoints are disabled.</li> |
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138 * <li>Execution will continue until either: |
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139 * <ol> |
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140 * <li>execution arrives at a node with the tag {@linkplain StandardSyntaxTag#STATEMENT |
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141 * STATMENT}, <strong>or:</strong></li> |
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142 * <li>execution completes.</li> |
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143 * </ol> |
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144 * <li>StepInto mode persists only through one resumption (i.e. {@code stepIntoCount} steps), |
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145 * and reverts by default to Continue mode.</li> |
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146 * </ul> |
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147 * |
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148 * @param stepCount the number of times to perform StepInto before halting |
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149 * @throws IllegalArgumentException if the specified number is {@code <= 0} |
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150 */ |
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151 public void prepareStepInto(int stepCount) { |
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152 debugger.prepareStepInto(stepCount); |
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153 } |
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154 |
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155 /** |
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156 * Prepare to execute in StepOut mode when guest language program execution resumes. In this |
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157 * mode: |
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158 * <ul> |
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159 * <li>User breakpoints are enabled.</li> |
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160 * <li>Execution will continue until either: |
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161 * <ol> |
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162 * <li>execution arrives at the nearest enclosing call site on the stack, <strong>or</strong></li> |
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163 * <li>execution completes.</li> |
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164 * </ol> |
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165 * <li>StepOut mode persists only through one resumption, and reverts by default to Continue |
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166 * mode.</li> |
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167 * </ul> |
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168 */ |
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169 public void prepareStepOut() { |
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170 debugger.prepareStepOut(); |
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171 } |
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172 |
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173 /** |
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174 * Prepare to execute in StepOver mode when guest language program execution resumes. In this |
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175 * mode: |
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176 * <ul> |
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177 * <li>Execution will continue until either: |
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178 * <ol> |
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179 * <li>execution arrives at a node with the tag {@linkplain StandardSyntaxTag#STATEMENT |
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180 * STATEMENT} when not nested in one or more function/method calls, <strong>or:</strong></li> |
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181 * <li>execution arrives at a node to which a breakpoint is attached and when nested in one or |
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182 * more function/method calls, <strong>or:</strong></li> |
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183 * <li>execution completes.</li> |
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184 * </ol> |
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185 * <li>StepOver mode persists only through one resumption (i.e. {@code stepOverCount} steps), |
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186 * and reverts by default to Continue mode.</li> |
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187 * </ul> |
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188 * |
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189 * @param stepCount the number of times to perform StepInto before halting |
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190 * @throws IllegalArgumentException if the specified number is {@code <= 0} |
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191 */ |
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192 public void prepareStepOver(int stepCount) { |
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193 debugger.prepareStepOver(stepCount); |
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194 } |
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195 } |