28 #include "gc/g1/g1CollectorState.hpp"
  29 #include "gc/g1/g1GCPhaseTimes.hpp"
  30 #include "gc/g1/g1HeapRegionAttr.hpp"
  31 #include "gc/g1/g1InitialMarkToMixedTimeTracker.hpp"
  32 #include "gc/g1/g1MMUTracker.hpp"
  33 #include "gc/g1/g1RemSetTrackingPolicy.hpp"
  34 #include "gc/g1/g1Predictions.hpp"
  35 #include "gc/g1/g1YoungGenSizer.hpp"
  36 #include "gc/shared/gcCause.hpp"
  37 #include "utilities/pair.hpp"
  38 
  39 // A G1Policy makes policy decisions that determine the
  40 // characteristics of the collector.  Examples include:
  41 //   * choice of collection set.
  42 //   * when to collect.
  43 
  44 class HeapRegion;
  45 class G1CollectionSet;
  46 class G1CollectionSetCandidates;
  47 class G1CollectionSetChooser;

  48 class G1IHOPControl;
  49 class G1Analytics;
  50 class G1SurvivorRegions;
  51 class G1YoungGenSizer;
  52 class GCPolicyCounters;
  53 class STWGCTimer;
  54 
  55 class G1Policy: public CHeapObj<mtGC> {

  56  private:
  57 
  58   static G1IHOPControl* create_ihop_control(const G1Predictions* predictor);
  59   // Update the IHOP control with necessary statistics.
  60   void update_ihop_prediction(double mutator_time_s,
  61                               size_t mutator_alloc_bytes,
  62                               size_t young_gen_size,
  63                               bool this_gc_was_young_only);
  64   void report_ihop_statistics();
  65 
  66   G1Predictions _predictor;
  67   G1Analytics* _analytics;
  68   G1RemSetTrackingPolicy _remset_tracker;
  69   G1MMUTracker* _mmu_tracker;
  70   G1IHOPControl* _ihop_control;
  71 
  72   GCPolicyCounters* _policy_counters;
  73 
  74   double _full_collection_start_sec;
  75 

  28 #include "gc/g1/g1CollectorState.hpp"
  29 #include "gc/g1/g1GCPhaseTimes.hpp"
  30 #include "gc/g1/g1HeapRegionAttr.hpp"
  31 #include "gc/g1/g1InitialMarkToMixedTimeTracker.hpp"
  32 #include "gc/g1/g1MMUTracker.hpp"
  33 #include "gc/g1/g1RemSetTrackingPolicy.hpp"
  34 #include "gc/g1/g1Predictions.hpp"
  35 #include "gc/g1/g1YoungGenSizer.hpp"
  36 #include "gc/shared/gcCause.hpp"
  37 #include "utilities/pair.hpp"
  38 
  39 // A G1Policy makes policy decisions that determine the
  40 // characteristics of the collector.  Examples include:
  41 //   * choice of collection set.
  42 //   * when to collect.
  43 
  44 class HeapRegion;
  45 class G1CollectionSet;
  46 class G1CollectionSetCandidates;
  47 class G1CollectionSetChooser;
  48 class G1HeapSizingPolicy;
  49 class G1IHOPControl;
  50 class G1Analytics;
  51 class G1SurvivorRegions;
  52 class G1YoungGenSizer;
  53 class GCPolicyCounters;
  54 class STWGCTimer;
  55 
  56 class G1Policy: public CHeapObj<mtGC> {
  57  friend class G1HeapSizingPolicy;
  58  private:
  59 
  60   static G1IHOPControl* create_ihop_control(const G1Predictions* predictor);
  61   // Update the IHOP control with necessary statistics.
  62   void update_ihop_prediction(double mutator_time_s,
  63                               size_t mutator_alloc_bytes,
  64                               size_t young_gen_size,
  65                               bool this_gc_was_young_only);
  66   void report_ihop_statistics();
  67 
  68   G1Predictions _predictor;
  69   G1Analytics* _analytics;
  70   G1RemSetTrackingPolicy _remset_tracker;
  71   G1MMUTracker* _mmu_tracker;
  72   G1IHOPControl* _ihop_control;
  73 
  74   GCPolicyCounters* _policy_counters;
  75 
  76   double _full_collection_start_sec;
  77