1521 class G1ParEvacuateFollowersClosure : public VoidClosure {

  1522 private:

  1523   double _start_term;

  1524   double _term_time;

  1525   size_t _term_attempts;

  1526 

  1527   void start_term_time() { _term_attempts++; _start_term = os::elapsedTime(); }

  1528   void end_term_time() { _term_time += os::elapsedTime() - _start_term; }

  1529 protected:

  1530   G1CollectedHeap*              _g1h;

  1531   G1ParScanThreadState*         _par_scan_state;

  1532   RefToScanQueueSet*            _queues;

  1533   ParallelTaskTerminator*       _terminator;

  1534 

  1535   G1ParScanThreadState*   par_scan_state() { return _par_scan_state; }

  1536   RefToScanQueueSet*      queues()         { return _queues; }

  1537   ParallelTaskTerminator* terminator()     { return _terminator; }

  1538 

  1539 public:

  1540   G1ParEvacuateFollowersClosure(G1CollectedHeap* g1h,

  1541                                 G1ParScanThreadState* par_scan_state,

  1542                                 RefToScanQueueSet* queues,

  1543                                 ParallelTaskTerminator* terminator)

  1544     : _g1h(g1h), _par_scan_state(par_scan_state),

  1545       _queues(queues), _terminator(terminator),

  1546       _start_term(0.0), _term_time(0.0), _term_attempts(0) {}

  1547 

  1548   void do_void();

  1549 

  1550   double term_time() const { return _term_time; }

  1551   size_t term_attempts() const { return _term_attempts; }

  1552 

  1553 private:

  1554   inline bool offer_termination();

  1555 };

  1556