145   // new cycle, as long as we are not already in one. It's best if it
 146   // is called during a safepoint when the test whether a cycle is in
 147   // progress or not is stable.
 148   virtual bool force_initial_mark_if_outside_cycle(GCCause::Cause gc_cause) = 0;
 149 
 150   // This is called at the very beginning of an evacuation pause (it
 151   // has to be the first thing that the pause does). If
 152   // initiate_conc_mark_if_possible() is true, and the concurrent
 153   // marking thread has completed its work during the previous cycle,
 154   // it will set during_initial_mark_pause() to so that the pause does
 155   // the initial-mark work and start a marking cycle.
 156   virtual void decide_on_conc_mark_initiation() = 0;
 157 
 158   // Print stats on young survival ratio
 159   virtual void print_yg_surv_rate_info() const = 0;
 160 
 161   virtual void finished_recalculating_age_indexes(bool is_survivors) = 0;
 162 
 163   virtual size_t young_list_target_length() const = 0;
 164 
 165   virtual bool is_young_list_full() const = 0;
 166 
 167   virtual bool can_expand_young_list() const = 0;
 168 
 169   virtual uint young_list_max_length() const = 0;
 170 
 171   virtual bool adaptive_young_list_length() const = 0;
 172 
 173   virtual bool should_process_references() const = 0;
 174 
 175   virtual uint tenuring_threshold() const = 0;
 176   virtual uint max_survivor_regions() = 0;
 177 
 178   virtual void note_start_adding_survivor_regions() = 0;
 179 
 180   virtual void note_stop_adding_survivor_regions() = 0;
 181 
 182   virtual void record_age_table(AgeTable* age_table) = 0;
 183 };
 184 
 185 #endif // SHARE_VM_GC_G1_G1POLICY_HPP

 145   // new cycle, as long as we are not already in one. It's best if it
 146   // is called during a safepoint when the test whether a cycle is in
 147   // progress or not is stable.
 148   virtual bool force_initial_mark_if_outside_cycle(GCCause::Cause gc_cause) = 0;
 149 
 150   // This is called at the very beginning of an evacuation pause (it
 151   // has to be the first thing that the pause does). If
 152   // initiate_conc_mark_if_possible() is true, and the concurrent
 153   // marking thread has completed its work during the previous cycle,
 154   // it will set during_initial_mark_pause() to so that the pause does
 155   // the initial-mark work and start a marking cycle.
 156   virtual void decide_on_conc_mark_initiation() = 0;
 157 
 158   // Print stats on young survival ratio
 159   virtual void print_yg_surv_rate_info() const = 0;
 160 
 161   virtual void finished_recalculating_age_indexes(bool is_survivors) = 0;
 162 
 163   virtual size_t young_list_target_length() const = 0;
 164 
 165   virtual bool should_allocate_mutator_region() const = 0;
 166 
 167   virtual bool can_expand_young_list() const = 0;
 168 
 169   virtual uint young_list_max_length() const = 0;
 170 
 171   virtual bool adaptive_young_list_length() const = 0;
 172 
 173   virtual bool should_process_references() const = 0;
 174 
 175   virtual uint tenuring_threshold() const = 0;
 176   virtual uint max_survivor_regions() = 0;
 177 
 178   virtual void note_start_adding_survivor_regions() = 0;
 179 
 180   virtual void note_stop_adding_survivor_regions() = 0;
 181 
 182   virtual void record_age_table(AgeTable* age_table) = 0;
 183 };
 184 
 185 #endif // SHARE_VM_GC_G1_G1POLICY_HPP