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src/hotspot/share/gc/g1/g1Policy.hpp

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rev 60542 : [mq]: 8245511-rev.3


  51 class G1SurvivorRegions;
  52 class G1YoungGenSizer;
  53 class GCPolicyCounters;
  54 class STWGCTimer;
  55 
  56 class G1Policy: public CHeapObj<mtGC> {
  57  private:
  58 
  59   static G1IHOPControl* create_ihop_control(const G1OldGenAllocationTracker* old_gen_alloc_tracker,
  60                                             const G1Predictions* predictor);
  61   // Update the IHOP control with necessary statistics.
  62   void update_ihop_prediction(double mutator_time_s,
  63                               size_t young_gen_size,
  64                               bool this_gc_was_young_only);
  65   void report_ihop_statistics();
  66 
  67   G1Predictions _predictor;
  68   G1Analytics* _analytics;
  69   G1RemSetTrackingPolicy _remset_tracker;
  70   G1MMUTracker* _mmu_tracker;




  71   G1IHOPControl* _ihop_control;
  72 
  73   GCPolicyCounters* _policy_counters;
  74 
  75   double _full_collection_start_sec;
  76 
  77   uint _young_list_target_length;
  78   uint _young_list_fixed_length;
  79 
  80   // The max number of regions we can extend the eden by while the GC
  81   // locker is active. This should be >= _young_list_target_length;
  82   uint _young_list_max_length;
  83 
  84   // The survivor rate groups below must be initialized after the predictor because they
  85   // indirectly use it through the "this" object passed to their constructor.
  86   G1SurvRateGroup* _eden_surv_rate_group;
  87   G1SurvRateGroup* _survivor_surv_rate_group;
  88 
  89   double _reserve_factor;
  90   // This will be set when the heap is expanded
  91   // for the first time during initialization.
  92   uint   _reserve_regions;
  93 
  94   G1YoungGenSizer* _young_gen_sizer;
  95 
  96   uint _free_regions_at_end_of_collection;
  97 
  98   size_t _rs_length;
  99 
 100   size_t _rs_length_prediction;
 101 
 102   size_t _pending_cards_at_gc_start;
 103 
 104   // Tracking the allocation in the old generation between
 105   // two GCs.
 106   G1OldGenAllocationTracker _old_gen_alloc_tracker;
 107 
 108   G1ConcurrentStartToMixedTimeTracker _concurrent_start_to_mixed;
 109 
 110   bool should_update_surv_rate_group_predictors() {
 111     return collector_state()->in_young_only_phase() && !collector_state()->mark_or_rebuild_in_progress();
 112   }
 113 
 114   double logged_cards_processing_time() const;
 115 public:
 116   const G1Predictions& predictor() const { return _predictor; }
 117   const G1Analytics* analytics()   const { return const_cast<const G1Analytics*>(_analytics); }
 118 
 119   G1RemSetTrackingPolicy* remset_tracker() { return &_remset_tracker; }
 120 
 121   G1OldGenAllocationTracker* old_gen_alloc_tracker() { return &_old_gen_alloc_tracker; }
 122 
 123   void set_region_eden(HeapRegion* hr) {
 124     hr->set_eden();
 125     hr->install_surv_rate_group(_eden_surv_rate_group);
 126   }




  51 class G1SurvivorRegions;
  52 class G1YoungGenSizer;
  53 class GCPolicyCounters;
  54 class STWGCTimer;
  55 
  56 class G1Policy: public CHeapObj<mtGC> {
  57  private:
  58 
  59   static G1IHOPControl* create_ihop_control(const G1OldGenAllocationTracker* old_gen_alloc_tracker,
  60                                             const G1Predictions* predictor);
  61   // Update the IHOP control with necessary statistics.
  62   void update_ihop_prediction(double mutator_time_s,
  63                               size_t young_gen_size,
  64                               bool this_gc_was_young_only);
  65   void report_ihop_statistics();
  66 
  67   G1Predictions _predictor;
  68   G1Analytics* _analytics;
  69   G1RemSetTrackingPolicy _remset_tracker;
  70   G1MMUTracker* _mmu_tracker;
  71 
  72   // Tracking the allocation in the old generation between
  73   // two GCs.
  74   G1OldGenAllocationTracker _old_gen_alloc_tracker;
  75   G1IHOPControl* _ihop_control;
  76 
  77   GCPolicyCounters* _policy_counters;
  78 
  79   double _full_collection_start_sec;
  80 
  81   uint _young_list_target_length;
  82   uint _young_list_fixed_length;
  83 
  84   // The max number of regions we can extend the eden by while the GC
  85   // locker is active. This should be >= _young_list_target_length;
  86   uint _young_list_max_length;
  87 
  88   // The survivor rate groups below must be initialized after the predictor because they
  89   // indirectly use it through the "this" object passed to their constructor.
  90   G1SurvRateGroup* _eden_surv_rate_group;
  91   G1SurvRateGroup* _survivor_surv_rate_group;
  92 
  93   double _reserve_factor;
  94   // This will be set when the heap is expanded
  95   // for the first time during initialization.
  96   uint   _reserve_regions;
  97 
  98   G1YoungGenSizer* _young_gen_sizer;
  99 
 100   uint _free_regions_at_end_of_collection;
 101 
 102   size_t _rs_length;
 103 
 104   size_t _rs_length_prediction;
 105 
 106   size_t _pending_cards_at_gc_start;




 107 
 108   G1ConcurrentStartToMixedTimeTracker _concurrent_start_to_mixed;
 109 
 110   bool should_update_surv_rate_group_predictors() {
 111     return collector_state()->in_young_only_phase() && !collector_state()->mark_or_rebuild_in_progress();
 112   }
 113 
 114   double logged_cards_processing_time() const;
 115 public:
 116   const G1Predictions& predictor() const { return _predictor; }
 117   const G1Analytics* analytics()   const { return const_cast<const G1Analytics*>(_analytics); }
 118 
 119   G1RemSetTrackingPolicy* remset_tracker() { return &_remset_tracker; }
 120 
 121   G1OldGenAllocationTracker* old_gen_alloc_tracker() { return &_old_gen_alloc_tracker; }
 122 
 123   void set_region_eden(HeapRegion* hr) {
 124     hr->set_eden();
 125     hr->install_surv_rate_group(_eden_surv_rate_group);
 126   }


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