src/hotspot/share/gc/g1/heapRegionManager.hpp

rev 51979 : imported patch 8071913-almost-done

*** 121,134 ****
    HeapRegion* new_heap_region(uint hrm_index);
  #ifdef ASSERT
  public:
    bool is_free(HeapRegion* hr) const;
  #endif
    // Returns whether the given region is available for allocation.
    bool is_available(uint region) const;
  
-  public:
    // Empty constructor, we'll initialize it with the initialize() method.
    HeapRegionManager();
  
    void initialize(G1RegionToSpaceMapper* heap_storage,
                    G1RegionToSpaceMapper* prev_bitmap,
--- 121,134 ----
    HeapRegion* new_heap_region(uint hrm_index);
  #ifdef ASSERT
  public:
    bool is_free(HeapRegion* hr) const;
  #endif
+ public:
    // Returns whether the given region is available for allocation.
    bool is_available(uint region) const;
  
    // Empty constructor, we'll initialize it with the initialize() method.
    HeapRegionManager();
  
    void initialize(G1RegionToSpaceMapper* heap_storage,
                    G1RegionToSpaceMapper* prev_bitmap,
*** 145,154 ****
--- 145,158 ----
  
    // Return the HeapRegion at the given index. Assume that the index
    // is valid.
    inline HeapRegion* at(uint index) const;
  
+   // Return the HeapRegion at the given index, NULL if the index
+   // is for an unavailable region.
+   inline HeapRegion* at_or_null(uint index) const;
+ 
    // Return the next region (by index) that is part of the same
    // humongous object that hr is part of.
    inline HeapRegion* next_region_in_humongous(HeapRegion* hr) const;
  
    // If addr is within the committed space return its corresponding