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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