| /* |
| * Copyright (c) 2000, 2012, 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 Instance is an instance of a Java Class |
| |
| public class Instance extends Oop { |
| static { |
| VM.registerVMInitializedObserver(new Observer() { |
| public void update(Observable o, Object data) { |
| initialize(VM.getVM().getTypeDataBase()); |
| } |
| }); |
| } |
| private static long typeSize; |
| |
| private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { |
| Type type = db.lookupType("instanceOopDesc"); |
| typeSize = type.getSize(); |
| } |
| |
| Instance(OopHandle handle, ObjectHeap heap) { |
| super(handle, heap); |
| } |
| |
| // Returns header size in bytes. |
| public static long getHeaderSize() { |
| if (VM.getVM().isCompressedKlassPointersEnabled()) { |
| return typeSize - VM.getVM().getIntSize(); |
| } else { |
| return typeSize; |
| } |
| } |
| |
| public boolean isInstance() { return true; } |
| |
| public void iterateFields(OopVisitor visitor, boolean doVMFields) { |
| super.iterateFields(visitor, doVMFields); |
| ((InstanceKlass) getKlass()).iterateNonStaticFields(visitor, this); |
| } |
| |
| public void printValueOn(PrintStream tty) { |
| // Special-case strings. |
| // FIXME: would like to do this in more type-safe fashion (need |
| // SystemDictionary analogue) |
| if (getKlass().getName().asString().equals("java/lang/String")) { |
| tty.print("\"" + OopUtilities.stringOopToString(this) + "\""); |
| } else { |
| super.printValueOn(tty); |
| } |
| } |
| } |