*** old/agent/src/share/classes/sun/jvm/hotspot/gc_implementation/g1/HeapRegionSetBase.java	Tue Feb 11 11:34:03 2014
--- new/agent/src/share/classes/sun/jvm/hotspot/gc_implementation/g1/HeapRegionSetBase.java	Tue Feb 11 11:34:03 2014

*** 38,53 ****
--- 38,49 ----
  import sun.jvm.hotspot.types.TypeDataBase;
  
  // Mirror class for HeapRegionSetBase. Represents a group of regions.
  
  public class HeapRegionSetBase extends VMObject {
      // uint _length;
!     static private CIntegerField lengthField;
      // uint _region_num;
      static private CIntegerField regionNumField;
      // size_t _total_used_bytes;
      static private CIntegerField totalUsedBytesField;
+ 
!     static private long countField;
  
      static {
          VM.registerVMInitializedObserver(new Observer() {
                  public void update(Observable o, Object data) {
                      initialize(VM.getVM().getTypeDataBase());

*** 56,80 ****
--- 52,69 ----
      }
  
      static private synchronized void initialize(TypeDataBase db) {
          Type type = db.lookupType("HeapRegionSetBase");
  
!         lengthField         = type.getCIntegerField("_length");
          regionNumField      = type.getCIntegerField("_region_num");
          totalUsedBytesField = type.getCIntegerField("_total_used_bytes");
      }
  
      public long length() {
          return lengthField.getValue(addr);
!         countField = type.getField("_count").getOffset();
      }
  
      public long regionNum() {
          return regionNumField.getValue(addr);
      }
  
!     public long totalUsedBytes() {
!         return totalUsedBytesField.getValue(addr);
!     public HeapRegionSetCount count() {
!         Address countFieldAddr = addr.addOffsetTo(countField);
+         return (HeapRegionSetCount) VMObjectFactory.newObject(HeapRegionSetCount.class,
+                                                                       countFieldAddr);
      }
      
      public HeapRegionSetBase(Address addr) {
          super(addr);
      }