src/share/vm/gc_implementation/g1/heapRegionRemSet.hpp

rev 7518 : 8048179: Early reclaim of large objects that are referenced by a few objects
Summary:
Reviewed-by:

*** 181,190 ****
--- 181,194 ----
    void add_reference(OopOrNarrowOopStar from, uint tid);
  
    // Returns whether the remembered set contains the given reference.
    bool contains_reference(OopOrNarrowOopStar from) const;
  
+   // Returns whether this remembered set (and all sub-sets) are "small" so that
+   // the (humongous) region will be candidate for eager reclaim.
+   bool is_small_for_eager_reclaim() const;  
+ 
    // Removes any entries shown by the given bitmaps to contain only dead
    // objects. Not thread safe.
    // Set bits in the bitmaps indicate that the given region or card is live.
    void scrub(CardTableModRefBS* ctbs, BitMap* region_bm, BitMap* card_bm);
  
*** 259,268 ****
--- 263,276 ----
  
    bool is_empty() const {
      return (strong_code_roots_list_length() == 0) && _other_regions.is_empty();
    }
  
+   bool is_small_for_eager_reclaim() const {
+     return (strong_code_roots_list_length() == 0) && _other_regions.is_small_for_eager_reclaim();
+   }
+ 
    size_t occupied() {
      MutexLockerEx x(&_m, Mutex::_no_safepoint_check_flag);
      return occupied_locked();
    }
    size_t occupied_locked() {