Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/interpreter/Bytecode.java @ 3779:04760e41b01e
7016112: CMS: crash during promotion testing
Summary: Also reviewed by mikael.gerdin@oracle.com; stdlib:qsort() does byte-by-byte swapping on Windows. This leads to pointer shearing. Fix is to implement a quicksort that does full pointer updates.
Reviewed-by: never, coleenp, ysr
author | brutisso |
---|---|
date | Tue, 28 Jun 2011 14:23:27 +0200 |
parents | c18cbe5936b8 |
children | 6a991dcb52bb |
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/* * Copyright (c) 2001, 2004, 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 sun.jvm.hotspot.interpreter; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.utilities.*; public class Bytecode { Method method; int bci; static final int jintSize = 4; static final String spaces = " "; static final String comma = ", "; Bytecode(Method method, int bci) { this.method = method; this.bci = bci; } // Address computation // NOTE: assumes that the start of the method's bytecodes is 4-byte aligned int alignedOffset(int offset) { return Bits.roundTo(bci + offset, jintSize) - bci; } int javaSignedWordAt(int offset) { return method.getBytecodeIntArg(bci + offset); } short javaShortAt(int offset) { return method.getBytecodeShortArg(bci + offset); } byte javaByteAt(int offset) { return method.getBytecodeByteArg(bci + offset); } public Method method() { return method; } public int bci() { return bci; } // hotspot byte code public int code() { return Bytecodes.codeAt(method(), bci()); } // jvm byte code public int javaCode() { return Bytecodes.javaCode(code()); } public String getBytecodeName() { return Bytecodes.name(code()); } public String getJavaBytecodeName() { return Bytecodes.name(javaCode()); } public int getLength() { return Bytecodes.lengthAt(method(), bci()); } public int getJavaLength() { return Bytecodes.javaLengthAt(method(), bci()); } public String toString() { StringBuffer buf = new StringBuffer(getJavaBytecodeName()); if (code() != javaCode()) { buf.append(spaces); buf.append('['); buf.append(getBytecodeName()); buf.append(']'); } return buf.toString(); } }