Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/builtins/SLStackTraceBuiltin.java @ 18485:e3c95cbbb50c
Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Sun, 23 Nov 2014 16:07:23 -0800 |
parents | b4e38f4ca414 |
children | 3286fb5fea4a |
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/* * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.truffle.sl.builtins; import com.oracle.truffle.api.*; import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary; import com.oracle.truffle.api.dsl.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.frame.FrameInstance.FrameAccess; import com.oracle.truffle.api.nodes.*; import com.oracle.truffle.api.source.*; /** * Returns a string representation of the current stack. This includes the {@link CallTarget}s and * the contents of the {@link Frame}. Note that this is implemented as a slow path by passing * {@code true} to {@link FrameInstance#getFrame(FrameAccess, boolean)}. */ @NodeInfo(shortName = "stacktrace") public abstract class SLStackTraceBuiltin extends SLBuiltinNode { public SLStackTraceBuiltin() { super(new NullSourceSection("SL builtin", "stacktrace")); } @Specialization public String trace() { return createStackTrace(); } @TruffleBoundary private static String createStackTrace() { StringBuilder str = new StringBuilder(); Truffle.getRuntime().iterateFrames(frameInstance -> { dumpFrame(str, frameInstance.getCallTarget(), frameInstance.getFrame(FrameAccess.READ_ONLY, true)); return null; }); return str.toString(); } private static void dumpFrame(StringBuilder str, CallTarget callTarget, Frame frame) { if (str.length() > 0) { str.append(System.getProperty("line.separator")); } str.append("Frame: ").append(((RootCallTarget) callTarget).getRootNode().toString()); FrameDescriptor frameDescriptor = frame.getFrameDescriptor(); for (FrameSlot s : frameDescriptor.getSlots()) { str.append(", ").append(s.getIdentifier()).append("=").append(frame.getValue(s)); } } }