478   ShenandoahRegionIterator _update_refs_iterator;
479 
480 private:
481   inline void reset_cancellation_time();
482 
483   // GC support
484   // Evacuation
485   virtual void evacuate_collection_set(ShenandoahGeneration* generation, bool concurrent);
486   // Concurrent root processing
487   void prepare_concurrent_roots();
488   void finish_concurrent_roots();
489   // Concurrent class unloading support
490   void do_class_unloading();
491   // Reference updating
492   void prepare_update_heap_references();
493 
494   // Retires LABs used for evacuation
495   void concurrent_prepare_for_update_refs();
496 
497   // Turn off weak roots flag
498   void concurrent_final_roots();
499 
500   virtual void update_heap_references(ShenandoahGeneration* generation, bool concurrent);
501   // Final update region states
502   void update_heap_region_states(bool concurrent);
503   virtual void final_update_refs_update_region_states();
504 
505   void rendezvous_threads(const char* name);
506   void recycle_trash();
507 public:
508   // The following two functions rebuild the free set at the end of GC, in preparation for an idle phase.
509   void rebuild_free_set(bool concurrent);
510   void rebuild_free_set_within_phase();
511   void notify_gc_progress();
512   void notify_gc_no_progress();
513   size_t get_gc_no_progress_count() const;
514 
515   // The uncommit thread targets soft max heap, notify this thread when that value has changed.
516   void notify_soft_max_changed();
517 
518   // An explicit GC request may have freed regions, notify the uncommit thread.

478   ShenandoahRegionIterator _update_refs_iterator;
479 
480 private:
481   inline void reset_cancellation_time();
482 
483   // GC support
484   // Evacuation
485   virtual void evacuate_collection_set(ShenandoahGeneration* generation, bool concurrent);
486   // Concurrent root processing
487   void prepare_concurrent_roots();
488   void finish_concurrent_roots();
489   // Concurrent class unloading support
490   void do_class_unloading();
491   // Reference updating
492   void prepare_update_heap_references();
493 
494   // Retires LABs used for evacuation
495   void concurrent_prepare_for_update_refs();
496 
497   // Turn off weak roots flag
498   void op_final_roots();
499 
500   virtual void update_heap_references(ShenandoahGeneration* generation, bool concurrent);
501   // Final update region states
502   void update_heap_region_states(bool concurrent);
503   virtual void final_update_refs_update_region_states();
504 
505   void rendezvous_threads(const char* name);
506   void recycle_trash();
507 public:
508   // The following two functions rebuild the free set at the end of GC, in preparation for an idle phase.
509   void rebuild_free_set(bool concurrent);
510   void rebuild_free_set_within_phase();
511   void notify_gc_progress();
512   void notify_gc_no_progress();
513   size_t get_gc_no_progress_count() const;
514 
515   // The uncommit thread targets soft max heap, notify this thread when that value has changed.
516   void notify_soft_max_changed();
517 
518   // An explicit GC request may have freed regions, notify the uncommit thread.