1 /* 2 * Copyright (c) 2012, 2016, 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.utilities.*; 30 import sun.jvm.hotspot.debugger.*; 31 import sun.jvm.hotspot.runtime.*; 32 import sun.jvm.hotspot.types.*; 33 34 abstract public class Metadata extends VMObject { 35 static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } })36 VM.registerVMInitializedObserver(new Observer() { 37 public void update(Observable o, Object data) { 38 initialize(VM.getVM().getTypeDataBase()); 39 } 40 }); 41 } 42 Metadata(Address addr)43 public Metadata(Address addr) { 44 super(addr); 45 } 46 alignSize(long size)47 public static long alignSize(long size) { 48 // natural word size. 49 return VM.getVM().alignUp(size, VM.getVM().getBytesPerWord()); 50 } 51 52 private static VirtualBaseConstructor<Metadata> metadataConstructor; 53 initialize(TypeDataBase db)54 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { 55 metadataConstructor = new VirtualBaseConstructor<Metadata>(db, db.lookupType("Metadata"), null, null); 56 // Define an explicit mapping since the C++ and Java type names don't match. 57 metadataConstructor.addMapping("Metadata", Metadata.class); 58 metadataConstructor.addMapping("Klass", Klass.class); 59 metadataConstructor.addMapping("InstanceKlass", InstanceKlass.class); 60 metadataConstructor.addMapping("InstanceMirrorKlass", InstanceMirrorKlass.class); 61 metadataConstructor.addMapping("InstanceRefKlass", InstanceRefKlass.class); 62 metadataConstructor.addMapping("InstanceClassLoaderKlass", InstanceClassLoaderKlass.class); 63 metadataConstructor.addMapping("TypeArrayKlass", TypeArrayKlass.class); 64 metadataConstructor.addMapping("ObjArrayKlass", ObjArrayKlass.class); 65 metadataConstructor.addMapping("Method", Method.class); 66 metadataConstructor.addMapping("MethodData", MethodData.class); 67 metadataConstructor.addMapping("ConstMethod", ConstMethod.class); 68 metadataConstructor.addMapping("ConstantPool", ConstantPool.class); 69 metadataConstructor.addMapping("ConstantPoolCache", ConstantPoolCache.class); 70 } 71 instantiateWrapperFor(Address addr)72 public static Metadata instantiateWrapperFor(Address addr) { 73 return metadataConstructor.instantiateWrapperFor(addr); 74 } 75 iterate(MetadataVisitor visitor)76 public void iterate(MetadataVisitor visitor) { 77 visitor.setObj(this); 78 visitor.prologue(); 79 iterateFields(visitor); 80 visitor.epilogue(); 81 } 82 iterateFields(MetadataVisitor visitor)83 void iterateFields(MetadataVisitor visitor) { 84 } 85 printValueOn(PrintStream tty)86 abstract public void printValueOn(PrintStream tty); dumpReplayData(PrintStream out)87 public void dumpReplayData(PrintStream out) { 88 out.println("# Unknown Metadata"); 89 } 90 } 91