Mercurial > hg > truffle
annotate truffle/com.oracle.truffle.sl/src/com/oracle/truffle/sl/builtins/SLStackTraceBuiltin.java @ 22548:6b76a24fffbd default tip
Use all variables: a, b, u,v and x, y
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
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date | Thu, 14 Jan 2016 14:20:57 +0100 |
parents | 8dddde8b20d4 |
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rev | line source |
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1 /* |
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2 * Copyright (c) 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 * The Universal Permissive License (UPL), Version 1.0 |
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6 * |
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7 * Subject to the condition set forth below, permission is hereby granted to any |
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8 * person obtaining a copy of this software, associated documentation and/or |
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9 * data (collectively the "Software"), free of charge and under any and all |
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10 * copyright rights in the Software, and any and all patent rights owned or |
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11 * freely licensable by each licensor hereunder covering either (i) the |
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12 * unmodified Software as contributed to or provided by such licensor, or (ii) |
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13 * the Larger Works (as defined below), to deal in both |
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14 * |
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15 * (a) the Software, and |
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16 * |
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17 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if |
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18 * one is included with the Software each a "Larger Work" to which the Software |
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19 * is contributed by such licensors), |
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20 * |
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21 * without restriction, including without limitation the rights to copy, create |
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22 * derivative works of, display, perform, and distribute the Software and make, |
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23 * use, sell, offer for sale, import, export, have made, and have sold the |
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24 * Software and the Larger Work(s), and to sublicense the foregoing rights on |
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25 * either these or other terms. |
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26 * |
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27 * This license is subject to the following condition: |
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28 * |
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29 * The above copyright notice and either this complete permission notice or at a |
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30 * minimum a reference to the UPL must be included in all copies or substantial |
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31 * portions of the Software. |
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32 * |
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33 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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34 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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35 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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36 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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37 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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38 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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39 * SOFTWARE. |
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40 */ |
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41 package com.oracle.truffle.sl.builtins; |
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42 |
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43 import com.oracle.truffle.api.CallTarget; |
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44 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary; |
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45 import com.oracle.truffle.api.RootCallTarget; |
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46 import com.oracle.truffle.api.Truffle; |
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47 import com.oracle.truffle.api.dsl.Specialization; |
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48 import com.oracle.truffle.api.frame.Frame; |
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49 import com.oracle.truffle.api.frame.FrameDescriptor; |
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50 import com.oracle.truffle.api.frame.FrameInstance; |
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51 import com.oracle.truffle.api.frame.FrameInstance.FrameAccess; |
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52 import com.oracle.truffle.api.frame.FrameInstanceVisitor; |
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53 import com.oracle.truffle.api.frame.FrameSlot; |
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54 import com.oracle.truffle.api.nodes.NodeInfo; |
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55 import com.oracle.truffle.api.nodes.RootNode; |
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56 import com.oracle.truffle.api.source.SourceSection; |
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57 import com.oracle.truffle.sl.SLLanguage; |
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58 |
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59 /** |
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60 * Returns a string representation of the current stack. This includes the {@link CallTarget}s and |
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61 * the contents of the {@link Frame}. Note that this is implemented as a slow path by passing |
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62 * {@code true} to {@link FrameInstance#getFrame(FrameAccess, boolean)}. |
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63 */ |
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64 @NodeInfo(shortName = "stacktrace") |
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65 public abstract class SLStackTraceBuiltin extends SLBuiltinNode { |
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66 |
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67 public SLStackTraceBuiltin() { |
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68 super(SourceSection.createUnavailable(SLLanguage.builtinKind, "stacktrace")); |
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69 } |
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70 |
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71 @Specialization |
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72 public String trace() { |
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73 return createStackTrace(); |
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74 } |
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75 |
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76 @TruffleBoundary |
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77 private static String createStackTrace() { |
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78 final StringBuilder str = new StringBuilder(); |
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79 |
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80 Truffle.getRuntime().iterateFrames(new FrameInstanceVisitor<Integer>() { |
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81 @Override |
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82 public Integer visitFrame(FrameInstance frameInstance) { |
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83 CallTarget callTarget = frameInstance.getCallTarget(); |
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84 Frame frame = frameInstance.getFrame(FrameAccess.READ_ONLY, true); |
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85 RootNode rn = ((RootCallTarget) callTarget).getRootNode(); |
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86 if (rn.getClass().getName().contains("SLFunctionForeignAccess")) { |
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87 return 1; |
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88 } |
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89 if (str.length() > 0) { |
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90 str.append(System.getProperty("line.separator")); |
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91 } |
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92 str.append("Frame: ").append(rn.toString()); |
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93 FrameDescriptor frameDescriptor = frame.getFrameDescriptor(); |
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94 for (FrameSlot s : frameDescriptor.getSlots()) { |
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95 str.append(", ").append(s.getIdentifier()).append("=").append(frame.getValue(s)); |
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96 } |
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97 return null; |
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98 } |
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99 }); |
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100 return str.toString(); |
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101 } |
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102 } |