*** old/src/share/vm/gc/g1/heapRegion.hpp	Tue Mar  8 15:19:56 2016
--- new/src/share/vm/gc/g1/heapRegion.hpp	Tue Mar  8 15:19:55 2016

*** 759,776 ****
--- 759,791 ----
  // Terminates the iteration when the "doHeapRegion" method returns "true".
  class HeapRegionClosure : public StackObj {
    friend class HeapRegionManager;
    friend class G1CollectedHeap;
  
+  public:
+   HeapRegionClosure() {}
+ 
+   // Typically called on each region until it returns true.
+   virtual void doHeapRegion(HeapRegion* r) = 0;
+ };
+ 
+ // AbortableHeapRegionClosure is used for iterating over regions.
+ // Terminates the iteration when the "doHeapRegion" method returns "true".
+ class AbortableHeapRegionClosure : public StackObj {
+   friend class HeapRegionManager;
+   friend class G1CollectedHeap;
+ 
    bool _complete;
    void incomplete() { _complete = false; }
  
   public:
!   AbortableHeapRegionClosure(): _complete(true) {}
+ 
+   //void doHeapRegion(HeapRegion* r) {}
  
    // Typically called on each region until it returns true.
!   virtual bool doHeapRegionAbortable(HeapRegion* r) = 0;
  
    // True after iteration if the closure was applied to all heap regions
    // and returned "false" in all cases.
    bool complete() { return _complete; }
  };