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src/hotspot/share/gc/g1/g1ConcurrentMarkThread.hpp

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  39   double _vtime_start;  // Initial virtual time.
  40   double _vtime_accum;  // Accumulated virtual time.
  41   double _vtime_mark_accum;
  42 
  43   G1ConcurrentMark* _cm;
  44 
  45   enum State {
  46     Idle,
  47     Started,
  48     InProgress
  49   };
  50 
  51   volatile State _state;
  52 
  53   // WhiteBox testing support.
  54   ConcurrentGCPhaseManager::Stack _phase_manager_stack;
  55 
  56   void sleep_before_next_cycle();
  57   // Delay marking to meet MMU.
  58   void delay_to_keep_mmu(G1Policy* g1_policy, bool remark);
  59   double mmu_delay_end(G1Policy* g1_policy, bool remark);
  60 
  61   void run_service();
  62   void stop_service();
  63 
  64  public:
  65   // Constructor
  66   G1ConcurrentMarkThread(G1ConcurrentMark* cm);
  67 
  68   // Total virtual time so far for this thread and concurrent marking tasks.
  69   double vtime_accum();
  70   // Marking virtual time so far this thread and concurrent marking tasks.
  71   double vtime_mark_accum();
  72 
  73   G1ConcurrentMark* cm()   { return _cm; }
  74 
  75   void set_idle()          { assert(_state != Started, "must not be starting a new cycle"); _state = Idle; }
  76   bool idle()              { return _state == Idle; }
  77   void set_started()       { assert(_state == Idle, "cycle in progress"); _state = Started; }
  78   bool started()           { return _state == Started; }
  79   void set_in_progress()   { assert(_state == Started, "must be starting a cycle"); _state = InProgress; }




  39   double _vtime_start;  // Initial virtual time.
  40   double _vtime_accum;  // Accumulated virtual time.
  41   double _vtime_mark_accum;
  42 
  43   G1ConcurrentMark* _cm;
  44 
  45   enum State {
  46     Idle,
  47     Started,
  48     InProgress
  49   };
  50 
  51   volatile State _state;
  52 
  53   // WhiteBox testing support.
  54   ConcurrentGCPhaseManager::Stack _phase_manager_stack;
  55 
  56   void sleep_before_next_cycle();
  57   // Delay marking to meet MMU.
  58   void delay_to_keep_mmu(G1Policy* g1_policy, bool remark);
  59   double mmu_sleep_time(G1Policy* g1_policy, bool remark);
  60 
  61   void run_service();
  62   void stop_service();
  63 
  64  public:
  65   // Constructor
  66   G1ConcurrentMarkThread(G1ConcurrentMark* cm);
  67 
  68   // Total virtual time so far for this thread and concurrent marking tasks.
  69   double vtime_accum();
  70   // Marking virtual time so far this thread and concurrent marking tasks.
  71   double vtime_mark_accum();
  72 
  73   G1ConcurrentMark* cm()   { return _cm; }
  74 
  75   void set_idle()          { assert(_state != Started, "must not be starting a new cycle"); _state = Idle; }
  76   bool idle()              { return _state == Idle; }
  77   void set_started()       { assert(_state == Idle, "cycle in progress"); _state = Started; }
  78   bool started()           { return _state == Started; }
  79   void set_in_progress()   { assert(_state == Started, "must be starting a cycle"); _state = InProgress; }


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