1 /* 2 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.oops; 26 27 import java.io.*; 28 import java.util.*; 29 import sun.jvm.hotspot.debugger.*; 30 import sun.jvm.hotspot.memory.*; 31 import sun.jvm.hotspot.runtime.*; 32 import sun.jvm.hotspot.types.*; 33 import sun.jvm.hotspot.utilities.*; 34 35 // An InstanceKlass is the VM level representation of a Java class. 36 37 public class InstanceMirrorKlass extends InstanceKlass { 38 static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } })39 VM.registerVMInitializedObserver(new Observer() { 40 public void update(Observable o, Object data) { 41 initialize(VM.getVM().getTypeDataBase()); 42 } 43 }); 44 } 45 initialize(TypeDataBase db)46 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { 47 // Just make sure it's there for now 48 Type type = db.lookupType("InstanceMirrorKlass"); 49 } 50 InstanceMirrorKlass(Address addr)51 public InstanceMirrorKlass(Address addr) { 52 super(addr); 53 } 54 getObjectSize(Oop o)55 public long getObjectSize(Oop o) { 56 return java_lang_Class.getOopSize(o) * VM.getVM().getAddressSize(); 57 } 58 iterateNonStaticFields(OopVisitor visitor, Oop obj)59 public void iterateNonStaticFields(OopVisitor visitor, Oop obj) { 60 super.iterateNonStaticFields(visitor, obj); 61 // Fetch the real klass from the mirror object 62 Klass klass = java_lang_Class.asKlass(obj); 63 if (klass instanceof InstanceKlass) { 64 ((InstanceKlass)klass).iterateStaticFields(visitor); 65 } 66 } 67 } 68