agent/src/share/classes/sun/jvm/hotspot/gc/g1/HeapRegionSetBase.java

@@ -39,11 +39,12 @@
 
 // Mirror class for HeapRegionSetBase. Represents a group of regions.
 
 public class HeapRegionSetBase extends VMObject {
 
-    static private long countField;
+    // uint _length
+    static private CIntegerField lengthField;
 
     static {
         VM.registerVMInitializedObserver(new Observer() {
                 public void update(Observable o, Object data) {
                     initialize(VM.getVM().getTypeDataBase());

@@ -52,17 +53,15 @@
     }
 
     static private synchronized void initialize(TypeDataBase db) {
         Type type = db.lookupType("HeapRegionSetBase");
 
-        countField = type.getField("_count").getOffset();
+        lengthField = type.getCIntegerField("_length");
     }
 
-
-    public HeapRegionSetCount count() {
-        Address countFieldAddr = addr.addOffsetTo(countField);
-        return (HeapRegionSetCount) VMObjectFactory.newObject(HeapRegionSetCount.class, countFieldAddr);
+    public long length() {
+        return lengthField.getValue(addr);
     }
 
     public HeapRegionSetBase(Address addr) {
         super(addr);
     }