224   YoungList*           _young_list;

   224   YoungList*           _young_list;

   225   G1ConcurrentMark*    _cm;

   225   G1ConcurrentMark*    _cm;

   226 

   226 

   227   volatile bool        _scan_in_progress;

   227   volatile bool        _scan_in_progress;

   228   volatile bool        _should_abort;

   228   volatile bool        _should_abort;

   230 

   230 

   231   void notify_scan_done();

   231   void notify_scan_done();

   232 

   232 

   233 public:

   233 public:

   234   G1CMRootRegions();

   234   G1CMRootRegions();