Mercurial > hg > graal-compiler
view agent/src/share/classes/sun/jvm/hotspot/oops/Array.java @ 218:a5838065ab24
6620329: jstack prints double native methods on Solaris/sparc
Summary: Fixed stack walking code in sparc to start frame walk from last_java_sp.
Reviewed-by: sgoldman
author | swamyv |
---|---|
date | Tue, 24 Jun 2008 21:37:10 -0700 |
parents | ba764ed4b6f2 |
children | d1605aabd0a1 |
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/* * Copyright 2000-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ package sun.jvm.hotspot.oops; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.memory.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.types.*; // Array is an abstract superclass for TypeArray and ObjArray public class Array extends Oop { static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } Array(OopHandle handle, ObjectHeap heap) { super(handle, heap); } private static void initialize(TypeDataBase db) throws WrongTypeException { Type type = db.lookupType("arrayOopDesc"); typeSize = (int)type.getSize(); } // Size of the arrayOopDesc private static long headerSize=0; private static long lengthOffsetInBytes=0; private static long typeSize; private static long headerSizeInBytes() { if (headerSize != 0) { return headerSize; } if (VM.getVM().isCompressedOopsEnabled()) { headerSize = typeSize; } else { headerSize = VM.getVM().alignUp(typeSize + VM.getVM().getIntSize(), VM.getVM().getHeapWordSize()); } return headerSize; } private static long headerSize(BasicType type) { if (Universe.elementTypeShouldBeAligned(type)) { return alignObjectSize(headerSizeInBytes())/VM.getVM().getHeapWordSize(); } else { return headerSizeInBytes()/VM.getVM().getHeapWordSize(); } } private long lengthOffsetInBytes() { if (lengthOffsetInBytes != 0) { return lengthOffsetInBytes; } if (VM.getVM().isCompressedOopsEnabled()) { lengthOffsetInBytes = typeSize - VM.getVM().getIntSize(); } else { lengthOffsetInBytes = typeSize; } return lengthOffsetInBytes; } // Accessors for declared fields public long getLength() { boolean isUnsigned = true; return this.getHandle().getCIntegerAt(lengthOffsetInBytes(), VM.getVM().getIntSize(), isUnsigned); } public long getObjectSize() { ArrayKlass klass = (ArrayKlass) getKlass(); // We have to fetch the length of the array, shift (multiply) it // appropriately, up to wordSize, add the header, and align to // object size. long s = getLength() << klass.getLog2ElementSize(); s += klass.getArrayHeaderInBytes(); s = Oop.alignObjectSize(s); return s; } public static long baseOffsetInBytes(BasicType type) { return headerSize(type) * VM.getVM().getHeapWordSize(); } public boolean isArray() { return true; } public void iterateFields(OopVisitor visitor, boolean doVMFields) { super.iterateFields(visitor, doVMFields); } }