587 uint base_free_regions, double target_pause_time_ms);
588
589 // Calculate the minimum number of old regions we'll add to the CSet
590 // during a mixed GC.
591 uint calc_min_old_cset_length();
592
593 // Calculate the maximum number of old regions we'll add to the CSet
594 // during a mixed GC.
595 uint calc_max_old_cset_length();
596
597 // Returns the given amount of uncollected reclaimable space
598 // as a percentage of the current heap capacity.
599 double reclaimable_bytes_perc(size_t reclaimable_bytes);
600
601 public:
602
603 G1CollectorPolicy();
604
605 virtual G1CollectorPolicy* as_g1_policy() { return this; }
606
607 virtual CollectorPolicy::Name kind() {
608 return CollectorPolicy::G1CollectorPolicyKind;
609 }
610
611 G1CollectorState* collector_state();
612
613 G1GCPhaseTimes* phase_times() const { return _phase_times; }
614
615 // Check the current value of the young list RSet lengths and
616 // compare it against the last prediction. If the current value is
617 // higher, recalculate the young list target length prediction.
618 void revise_young_list_target_length_if_necessary();
619
620 // This should be called after the heap is resized.
621 void record_new_heap_size(uint new_number_of_regions);
622
623 void init();
624
625 // Create jstat counters for the policy.
626 virtual void initialize_gc_policy_counters();
627
628 virtual HeapWord* mem_allocate_work(size_t size,
629 bool is_tlab,
630 bool* gc_overhead_limit_was_exceeded);
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587 uint base_free_regions, double target_pause_time_ms);
588
589 // Calculate the minimum number of old regions we'll add to the CSet
590 // during a mixed GC.
591 uint calc_min_old_cset_length();
592
593 // Calculate the maximum number of old regions we'll add to the CSet
594 // during a mixed GC.
595 uint calc_max_old_cset_length();
596
597 // Returns the given amount of uncollected reclaimable space
598 // as a percentage of the current heap capacity.
599 double reclaimable_bytes_perc(size_t reclaimable_bytes);
600
601 public:
602
603 G1CollectorPolicy();
604
605 virtual G1CollectorPolicy* as_g1_policy() { return this; }
606
607 G1CollectorState* collector_state();
608
609 G1GCPhaseTimes* phase_times() const { return _phase_times; }
610
611 // Check the current value of the young list RSet lengths and
612 // compare it against the last prediction. If the current value is
613 // higher, recalculate the young list target length prediction.
614 void revise_young_list_target_length_if_necessary();
615
616 // This should be called after the heap is resized.
617 void record_new_heap_size(uint new_number_of_regions);
618
619 void init();
620
621 // Create jstat counters for the policy.
622 virtual void initialize_gc_policy_counters();
623
624 virtual HeapWord* mem_allocate_work(size_t size,
625 bool is_tlab,
626 bool* gc_overhead_limit_was_exceeded);
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