Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/builtins/SLStackTraceBuiltin.java @ 15064:f675818d9ad0
new getStackTrace and getCurrentFrame functionality in TruffleRuntime
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Fri, 11 Apr 2014 11:53:11 +0200 |
parents | |
children | d3add9b82b71 |
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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.SlowPath; 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.*; /** * 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 { @Specialization public String trace() { return createStackTrace(); } @SlowPath private static String createStackTrace() { StringBuilder str = new StringBuilder(); for (FrameInstance frame : Truffle.getRuntime().getStackTrace()) { dumpFrame(str, frame.getCallNode().getRootNode(), frame.getFrame(FrameAccess.READ_ONLY, true), frame.isVirtualFrame()); } return str.toString(); } private static void dumpFrame(StringBuilder str, RootNode rootNode, Frame frame, boolean isVirtual) { if (str.length() > 0) { str.append("\n"); } str.append("Frame: ").append(rootNode).append(isVirtual ? " (virtual)" : ""); FrameDescriptor frameDescriptor = frame.getFrameDescriptor(); for (FrameSlot s : frameDescriptor.getSlots()) { str.append(", ").append(s.getIdentifier()).append("=").append(frame.getValue(s)); } } }