Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/oops/ObjArray.java @ 3945:8ed53447f690
Merge
author | iveresov |
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date | Thu, 15 Sep 2011 12:44:09 -0700 |
parents | c18cbe5936b8 |
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/* * Copyright (c) 2000, 2008, 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.oops; import java.io.*; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.types.*; // An ObjArray is an array containing oops public class ObjArray extends Array { static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { Type type = db.lookupType("objArrayOopDesc"); elementSize = VM.getVM().getHeapOopSize(); } ObjArray(OopHandle handle, ObjectHeap heap) { super(handle, heap); } public boolean isObjArray() { return true; } private static long elementSize; public OopHandle getOopHandleAt(long index) { long offset = baseOffsetInBytes(BasicType.T_OBJECT) + (index * elementSize); if (VM.getVM().isCompressedOopsEnabled()) { return getHandle().getCompOopHandleAt(offset); } else { return getHandle().getOopHandleAt(offset); } } public Oop getObjAt(long index) { return getHeap().newOop(getOopHandleAt(index)); } public void printValueOn(PrintStream tty) { tty.print("ObjArray"); } public void iterateFields(OopVisitor visitor, boolean doVMFields) { super.iterateFields(visitor, doVMFields); int length = (int) getLength(); long baseOffset = baseOffsetInBytes(BasicType.T_OBJECT); for (int index = 0; index < length; index++) { long offset = baseOffset + (index * elementSize); OopField field; if (VM.getVM().isCompressedOopsEnabled()) { field = new NarrowOopField(new IndexableFieldIdentifier(index), offset, false); } else { field = new OopField(new IndexableFieldIdentifier(index), offset, false); } visitor.doOop(field, false); } } }