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

rev 8461 : imported patch webrev1.patch
rev 8462 : [mq]: version3

@@ -148,21 +148,14 @@
 
   // 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, or NULL.
-  inline HeapRegion* at_or_null(uint index) const;
-
   // If addr is within the committed space return its corresponding
   // HeapRegion, otherwise return NULL.
   inline HeapRegion* addr_to_region(HeapWord* addr) const;
 
-  // If addr is within the maximum heap space, return its corresponding
-  // HeapRegion index.
-  inline uint addr_to_index(HeapWord* addr) const;
-
   // Insert the given region into the free region list.
   inline void insert_into_free_list(HeapRegion* hr);
 
   // Insert the given region list into the global free region list.
   void insert_list_into_free_list(FreeRegionList* list) {

@@ -226,12 +219,19 @@
   // start index of that set, or G1_NO_HRM_INDEX.
   uint find_contiguous_empty_or_unavailable(size_t num) { return find_contiguous(num, false); }
 
   HeapRegion* next_region_in_heap(const HeapRegion* r) const;
 
-  // Find the highest available empty or uncommitted region in the reserved heap.
-  uint find_highest_available(bool* expanded);
+  // Find the highest free or uncommitted region in the reserved heap,
+  // and if uncommitted, commit it. If none are available, return G1_NO_HRM_INDEX.
+  // Set the 'expanded' boolean true if a new region was committed.
+  uint find_highest_free(bool* expanded);
+
+  // Allocate the regions that contain the address range specified, committing the
+  // regions if necessary. Return false if any of the regions is already committed
+  // and not free, and return the number of regions newly committed in commit_count.
+  bool allocate_containing_regions(MemRegion range, size_t* commit_count);
 
   // Apply blk->doHeapRegion() on all committed regions in address order,
   // terminating the iteration early if doHeapRegion() returns true.
   void iterate(HeapRegionClosure* blk) const;