1 /*
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24 
25 package sun.jvm.hotspot.opto;
26 
27 import java.util.*;
28 import sun.jvm.hotspot.debugger.*;
29 import sun.jvm.hotspot.runtime.*;
30 import sun.jvm.hotspot.oops.*;
31 import sun.jvm.hotspot.types.*;
32 import sun.jvm.hotspot.utilities.Observable;
33 import sun.jvm.hotspot.utilities.Observer;
34 
35 public class Block_Array extends VMObject {
36   static {
VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } })37     VM.registerVMInitializedObserver(new Observer() {
38         public void update(Observable o, Object data) {
39           initialize(VM.getVM().getTypeDataBase());
40         }
41       });
42   }
43 
initialize(TypeDataBase db)44   private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
45     Type type      = db.lookupType("Block_Array");
46     sizeField = new CIntField(type.getCIntegerField("_size"), 0);
47     blocksField = type.getAddressField("_blocks");
48     arenaField = type.getAddressField("_arena");
49   }
50 
51   private static CIntField sizeField;
52   private static AddressField blocksField;
53   private static AddressField arenaField;
54 
Block_Array(Address addr)55   public Block_Array(Address addr) {
56     super(addr);
57   }
58 
Max()59   public int Max() {
60     return (int) sizeField.getValue(getAddress());
61   }
62 
at(int i)63   public Block at(int i) {
64     return new Block(blocksField.getValue(getAddress()).getAddressAt(i * (int)VM.getVM().getAddressSize()));
65   }
66 }
67