| /* |
| * 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); |
| } |
| } |
| } |