56 //   2) We find PRT's in an attempt to add entries.  If a PRT is deleted,

    56 //   2) We find PRT's in an attempt to add entries.  If a PRT is deleted,

    57 //      it's _coarse_map bit is set, so the that we were attempting to add

    57 //      it's _coarse_map bit is set, so the that we were attempting to add

    58 //      is represented.  If a deleted PRT is re-used, a thread adding a bit,

    58 //      is represented.  If a deleted PRT is re-used, a thread adding a bit,

    59 //      thinking the PRT is for a different region, does no harm.

    59 //      thinking the PRT is for a different region, does no harm.

    60 

    60 

    62   friend class HeapRegionRemSetIterator;

    62   friend class HeapRegionRemSetIterator;

    63 

    63 

    64   G1CollectedHeap* _g1h;

    64   G1CollectedHeap* _g1h;

    65   Mutex            _m;

    65   Mutex            _m;

    66   HeapRegion*      _hr;

    66   HeapRegion*      _hr;