< prev index next >

src/hotspot/share/gc/g1/g1RemSetSummary.hpp

Print this page
rev 57544 : 8236485: Work-in-progress: Epoch synchronization protocol for G1 concurrent refinement
Reviewed-by:


  27 
  28 #include "utilities/globalDefinitions.hpp"
  29 #include "utilities/ostream.hpp"
  30 
  31 class G1RemSet;
  32 
  33 // A G1RemSetSummary manages statistical information about the G1RemSet
  34 
  35 class G1RemSetSummary {
  36 private:
  37   size_t _total_mutator_refined_cards;
  38   size_t _total_concurrent_refined_cards;
  39 
  40   size_t _num_coarsenings;
  41 
  42   size_t _num_vtimes;
  43   double* _rs_threads_vtimes;
  44 
  45   double _sampling_thread_vtime;
  46 









  47   void set_rs_thread_vtime(uint thread, double value);
  48   void set_sampling_thread_vtime(double value) {
  49     _sampling_thread_vtime = value;
  50   }
  51 
  52   // update this summary with current data from various places
  53   void update();
  54 
  55 public:
  56   G1RemSetSummary(bool should_update = true);
  57 
  58   ~G1RemSetSummary();
  59 
  60   // set the counters in this summary to the values of the others
  61   void set(G1RemSetSummary* other);
  62   // subtract all counters from the other summary, and set them in the current
  63   void subtract_from(G1RemSetSummary* other);
  64 
  65   void print_on(outputStream* out);
  66 
  67   double rs_thread_vtime(uint thread) const;
  68 
  69   double sampling_thread_vtime() const {
  70     return _sampling_thread_vtime;
  71   }
  72 
  73   size_t total_mutator_refined_cards() const {
  74     return _total_mutator_refined_cards;
  75   }
  76 
  77   size_t total_concurrent_refined_cards() const {
  78     return _total_concurrent_refined_cards;
  79   }
  80 
  81   size_t total_refined_cards() const {
  82     return total_mutator_refined_cards() + total_concurrent_refined_cards();
  83   }
  84 
  85   size_t num_coarsenings() const {
  86     return _num_coarsenings;




























  87   }
  88 };
  89 
  90 #endif // SHARE_GC_G1_G1REMSETSUMMARY_HPP


  27 
  28 #include "utilities/globalDefinitions.hpp"
  29 #include "utilities/ostream.hpp"
  30 
  31 class G1RemSet;
  32 
  33 // A G1RemSetSummary manages statistical information about the G1RemSet
  34 
  35 class G1RemSetSummary {
  36 private:
  37   size_t _total_mutator_refined_cards;
  38   size_t _total_concurrent_refined_cards;
  39 
  40   size_t _num_coarsenings;
  41 
  42   size_t _num_vtimes;
  43   double* _rs_threads_vtimes;
  44 
  45   double _sampling_thread_vtime;
  46 
  47   // Snapshot of counters from G1EpochSynchronizerCounters
  48   size_t _num_fast_sync;
  49   size_t _num_no_handshake_sync;
  50   size_t _num_handshake_sync;
  51   size_t _no_handshake_accum_time_ms;
  52   size_t _handshake_accum_time_ms;
  53   size_t _num_handshake_no_safepoint;
  54   size_t _num_handshake_safepoint;
  55 
  56   void set_rs_thread_vtime(uint thread, double value);
  57   void set_sampling_thread_vtime(double value) {
  58     _sampling_thread_vtime = value;
  59   }
  60 
  61   // update this summary with current data from various places
  62   void update();
  63 
  64 public:
  65   G1RemSetSummary(bool should_update = true);
  66 
  67   ~G1RemSetSummary();
  68 
  69   // set the counters in this summary to the values of the others
  70   void set(G1RemSetSummary* other);
  71   // subtract all counters from the other summary, and set them in the current
  72   void subtract_from(G1RemSetSummary* other);
  73 
  74   void print_on(outputStream* out);
  75 
  76   double rs_thread_vtime(uint thread) const;
  77 
  78   double sampling_thread_vtime() const {
  79     return _sampling_thread_vtime;
  80   }
  81 
  82   size_t total_mutator_refined_cards() const {
  83     return _total_mutator_refined_cards;
  84   }
  85 
  86   size_t total_concurrent_refined_cards() const {
  87     return _total_concurrent_refined_cards;
  88   }
  89 
  90   size_t total_refined_cards() const {
  91     return total_mutator_refined_cards() + total_concurrent_refined_cards();
  92   }
  93 
  94   size_t num_coarsenings() const {
  95     return _num_coarsenings;
  96   }
  97 
  98   size_t num_fast_sync() const {
  99     return _num_fast_sync;
 100   }
 101 
 102   size_t num_no_handshake_sync() const {
 103     return _num_no_handshake_sync;
 104   }
 105 
 106   size_t num_handshake_sync() const {
 107     return _num_handshake_sync;
 108   }
 109 
 110   size_t no_handshake_accum_time_ms() const {
 111     return _no_handshake_accum_time_ms;
 112   }
 113 
 114   size_t handshake_accum_time_ms() const {
 115     return _handshake_accum_time_ms;
 116   }
 117 
 118   size_t num_handshake_no_safepoint() const {
 119     return _num_handshake_no_safepoint;
 120   }
 121 
 122   size_t num_handshake_safepoint() const {
 123     return _num_handshake_safepoint;
 124   }
 125 };
 126 
 127 #endif // SHARE_GC_G1_G1REMSETSUMMARY_HPP
< prev index next >