64 //////////////////// OldRegionSet ////////////////////

    65 

    66 class OldRegionSet : public HeapRegionSet {

    67 protected:

    68   virtual const char* verify_region_extra(HeapRegion* hr);

    69 

    70   virtual bool regions_humongous() { return false; }

    71   virtual bool regions_empty()     { return false; }

    72 

    73 public:

    74   OldRegionSet(const char* name) : HeapRegionSet(name) { }

    75 };

    76 

    77 //////////////////// MasterOldRegionSet ////////////////////

    78 

    79 class MasterOldRegionSet : public OldRegionSet {

    80 private:

    81 protected:

    82   virtual bool check_mt_safety();

    83 

    84 public:

    85   MasterOldRegionSet(const char* name) : OldRegionSet(name) { }

    86 };

    87