542   // displaced for accommodating overflow list above.

   542   // displaced for accommodating overflow list above.

   543   // This code will likely be revisited under RFE#4922830.

   543   // This code will likely be revisited under RFE#4922830.

   544   Stack<oop, mtGC>     _preserved_oop_stack;

   544   Stack<oop, mtGC>     _preserved_oop_stack;

   545   Stack<markOop, mtGC> _preserved_mark_stack;

   545   Stack<markOop, mtGC> _preserved_mark_stack;

   546 

   546 

   549   // In support of multi-threaded concurrent phases

   547   // In support of multi-threaded concurrent phases

   550   YieldingFlexibleWorkGang* _conc_workers;

   548   YieldingFlexibleWorkGang* _conc_workers;

   551 

   549 

   552   // Performance Counters

   550   // Performance Counters

   553   CollectorCounters* _gc_counters;

   551   CollectorCounters* _gc_counters;

   711 

   709 

   712   void do_CMS_operation(CMS_op_type op, GCCause::Cause gc_cause);

   710   void do_CMS_operation(CMS_op_type op, GCCause::Cause gc_cause);

   713   bool stop_world_and_do(CMS_op_type op);

   711   bool stop_world_and_do(CMS_op_type op);

   714 

   712 

   715   OopTaskQueueSet* task_queues() { return _task_queues; }

   713   OopTaskQueueSet* task_queues() { return _task_queues; }

   717   YieldingFlexibleWorkGang* conc_workers() { return _conc_workers; }

   714   YieldingFlexibleWorkGang* conc_workers() { return _conc_workers; }

   718 

   715 

   719   // Support for parallelizing Eden rescan in CMS remark phase

   716   // Support for parallelizing Eden rescan in CMS remark phase

   720   void sample_eden(); // ... sample Eden space top

   717   void sample_eden(); // ... sample Eden space top

   721 

   718