41   static {
42     VM.registerVMInitializedObserver(new Observer() {
43         public void update(Observable o, Object data) {
44           initialize(VM.getVM().getTypeDataBase());
45         }
46       });
47   }
48 
49   private static boolean typeExists(TypeDataBase db, String type) {
50       try {
51           db.lookupType(type);
52       } catch (RuntimeException e) {
53           return false;
54       }
55       return true;
56   }
57 
58   private static synchronized void initialize(TypeDataBase db) {
59     Type type = db.lookupType("CompressedKlassPointers");
60 
61     baseField = type.getAddressField("_narrow_klass._base");
62     shiftField = type.getCIntegerField("_narrow_klass._shift");
63   }
64 
65   public CompressedKlassPointers() {
66   }
67 
68   public static long getBase() {
69     if (baseField.getValue() == null) {
70       return 0;
71     } else {

72       return baseField.getValue().minus(null);
73     }
74   }
75 
76   public static int getShift() {
77     return (int)shiftField.getValue();


78   }
79 }

41   static {
42     VM.registerVMInitializedObserver(new Observer() {
43         public void update(Observable o, Object data) {
44           initialize(VM.getVM().getTypeDataBase());
45         }
46       });
47   }
48 
49   private static boolean typeExists(TypeDataBase db, String type) {
50       try {
51           db.lookupType(type);
52       } catch (RuntimeException e) {
53           return false;
54       }
55       return true;
56   }
57 
58   private static synchronized void initialize(TypeDataBase db) {
59     Type type = db.lookupType("CompressedKlassPointers");
60 
61     baseField = type.getAddressField("_base");
62     shiftField = type.getCIntegerField("_shift_copy");
63   }
64 
65   public CompressedKlassPointers() {
66   }
67 
68   public static long getBase() {
69     if (baseField.getValue() == null) {
70       return 0;
71     } else {
72         System.out.println("base: " + baseField.getValue().minus(null));
73       return baseField.getValue().minus(null);
74     }
75   }
76 
77   public static int getShift() {
78 
79       System.out.println("shift: " + (int)shiftField.getValue());
80       return (int)shiftField.getValue();
81   }
82 }