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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/builtins/SLStackTraceBuiltin.java @ 16529:f6ac86d3334e
Change API for stack walking to a visitor: TruffleRuntime#iterateFrames replaces TruffleRuntime#getStackTrace
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Tue, 15 Jul 2014 16:34:53 -0700 |
parents | a3b0ecef8a15 |
children | fb1c21844758 |
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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.SlowPath; |
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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 |
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32 /** |
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33 * Returns a string representation of the current stack. This includes the {@link CallTarget}s and |
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34 * the contents of the {@link Frame}. Note that this is implemented as a slow path by passing |
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35 * {@code true} to {@link FrameInstance#getFrame(FrameAccess, boolean)}. |
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36 */ |
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37 @NodeInfo(shortName = "stacktrace") |
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38 public abstract class SLStackTraceBuiltin extends SLBuiltinNode { |
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39 |
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40 @Specialization |
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41 public String trace() { |
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42 return createStackTrace(); |
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43 } |
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44 |
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45 @SlowPath |
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46 private static String createStackTrace() { |
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47 StringBuilder str = new StringBuilder(); |
15097
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SL: Make SLStackTraceBuilting comfortable with non-graal runtimes.
Christian Humer <christian.humer@gmail.com>
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48 |
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Change API for stack walking to a visitor: TruffleRuntime#iterateFrames replaces TruffleRuntime#getStackTrace
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49 Truffle.getRuntime().iterateFrames(frameInstance -> { |
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50 dumpFrame(str, frameInstance.getCallTarget(), frameInstance.getFrame(FrameAccess.READ_ONLY, true), frameInstance.isVirtualFrame()); |
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51 return null; |
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52 }); |
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53 return str.toString(); |
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54 } |
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55 |
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56 private static void dumpFrame(StringBuilder str, CallTarget callTarget, Frame frame, boolean isVirtual) { |
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57 if (str.length() > 0) { |
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58 str.append("\n"); |
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59 } |
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60 str.append("Frame: ").append(callTarget).append(isVirtual ? " (virtual)" : ""); |
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61 FrameDescriptor frameDescriptor = frame.getFrameDescriptor(); |
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62 for (FrameSlot s : frameDescriptor.getSlots()) { |
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63 str.append(", ").append(s.getIdentifier()).append("=").append(frame.getValue(s)); |
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64 } |
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65 } |
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66 } |