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annotate truffle/com.oracle.truffle.sl/src/com/oracle/truffle/sl/builtins/SLStackTraceBuiltin.java @ 21951:9c8c0937da41

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Moving all sources into truffle subdirectory
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 17 Jun 2015 10:58:08 +0200
parents graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/builtins/SLStackTraceBuiltin.java@0a00a5bd7c70
children b2d1c8ff592a
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1 /*
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2 * Copyright (c) 2012, 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.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.sl.builtins;
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24
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25 import com.oracle.truffle.api.*;
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26 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
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27 import com.oracle.truffle.api.dsl.*;
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28 import com.oracle.truffle.api.frame.*;
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29 import com.oracle.truffle.api.frame.FrameInstance.FrameAccess;
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30 import com.oracle.truffle.api.nodes.*;
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31 import com.oracle.truffle.api.source.*;
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32
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33 /**
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34 * Returns a string representation of the current stack. This includes the {@link CallTarget}s and
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35 * the contents of the {@link Frame}. Note that this is implemented as a slow path by passing
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36 * {@code true} to {@link FrameInstance#getFrame(FrameAccess, boolean)}.
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37 */
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38 @NodeInfo(shortName = "stacktrace")
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39 public abstract class SLStackTraceBuiltin extends SLBuiltinNode {
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40
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41 public SLStackTraceBuiltin() {
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42 super(new NullSourceSection("SL builtin", "stacktrace"));
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43 }
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44
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45 @Specialization
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46 public String trace() {
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47 return createStackTrace();
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48 }
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49
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50 @TruffleBoundary
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51 private static String createStackTrace() {
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52 final StringBuilder str = new StringBuilder();
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53
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54 Truffle.getRuntime().iterateFrames(new FrameInstanceVisitor<Integer>() {
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55 @Override
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56 public Integer visitFrame(FrameInstance frameInstance) {
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57 CallTarget callTarget = frameInstance.getCallTarget();
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58 Frame frame = frameInstance.getFrame(FrameAccess.READ_ONLY, true);
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59 RootNode rn = ((RootCallTarget) callTarget).getRootNode();
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60 if (rn.getClass().getName().contains("SLFunctionForeignAccess")) {
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61 return 1;
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62 }
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63 if (str.length() > 0) {
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64 str.append(System.getProperty("line.separator"));
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65 }
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66 str.append("Frame: ").append(rn.toString());
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67 FrameDescriptor frameDescriptor = frame.getFrameDescriptor();
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68 for (FrameSlot s : frameDescriptor.getSlots()) {
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69 str.append(", ").append(s.getIdentifier()).append("=").append(frame.getValue(s));
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70 }
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71 return null;
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72 }
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73 });
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74 return str.toString();
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75 }
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76 }