26 #define SHARE_VM_GC_G1_G1COLLECTORPOLICY_HPP
27
28 #include "gc/g1/g1CollectorState.hpp"
29 #include "gc/g1/g1GCPhaseTimes.hpp"
30 #include "gc/g1/g1InCSetState.hpp"
31 #include "gc/g1/g1InitialMarkToMixedTimeTracker.hpp"
32 #include "gc/g1/g1MMUTracker.hpp"
33 #include "gc/g1/g1Predictions.hpp"
34 #include "gc/shared/collectorPolicy.hpp"
35 #include "utilities/pair.hpp"
36
37 // A G1CollectorPolicy makes policy decisions that determine the
38 // characteristics of the collector. Examples include:
39 // * choice of collection set.
40 // * when to collect.
41
42 class HeapRegion;
43 class G1CollectionSet;
44 class CollectionSetChooser;
45 class G1IHOPControl;
46 class G1Measurements;
47 class G1YoungGenSizer;
48
49 class G1CollectorPolicy: public CollectorPolicy {
50 private:
51 G1IHOPControl* _ihop_control;
52
53 G1IHOPControl* create_ihop_control() const;
54 // Update the IHOP control with necessary statistics.
55 void update_ihop_prediction(double mutator_time_s,
56 size_t mutator_alloc_bytes,
57 size_t young_gen_size);
58 void report_ihop_statistics();
59
60 G1Predictions _predictor;
61 G1Measurements* _measurements;
62
63 G1MMUTracker* _mmu_tracker;
64
65 void initialize_alignments();
66 void initialize_flags();
67
68 double _full_collection_start_sec;
69
70 // Ratio check data for determining if heap growth is necessary.
71 uint _ratio_over_threshold_count;
72 double _ratio_over_threshold_sum;
73 uint _pauses_since_start;
74
75 uint _young_list_target_length;
76 uint _young_list_fixed_length;
77
78 // The max number of regions we can extend the eden by while the GC
79 // locker is active. This should be >= _young_list_target_length;
80 uint _young_list_max_length;
81
104
105 #ifndef PRODUCT
106 bool verify_young_ages(HeapRegion* head, SurvRateGroup *surv_rate_group);
107 #endif // PRODUCT
108
109 void adjust_concurrent_refinement(double update_rs_time,
110 double update_rs_processed_buffers,
111 double goal_ms);
112
113 double _pause_time_target_ms;
114
115 size_t _pending_cards;
116
117 // The amount of allocated bytes in old gen during the last mutator and the following
118 // young GC phase.
119 size_t _bytes_allocated_in_old_since_last_gc;
120
121 G1InitialMarkToMixedTimeTracker _initial_mark_to_mixed;
122 public:
123 const G1Predictions& predictor() const { return _predictor; }
124 const G1Measurements* measurements() { return const_cast<const G1Measurements*>(_measurements); }
125
126 // Add the given number of bytes to the total number of allocated bytes in the old gen.
127 void add_bytes_allocated_in_old_since_last_gc(size_t bytes) { _bytes_allocated_in_old_since_last_gc += bytes; }
128
129 // Accessors
130
131 void set_region_eden(HeapRegion* hr, int young_index_in_cset) {
132 hr->set_eden();
133 hr->install_surv_rate_group(_short_lived_surv_rate_group);
134 hr->set_young_index_in_cset(young_index_in_cset);
135 }
136
137 void set_region_survivor(HeapRegion* hr, int young_index_in_cset) {
138 assert(hr->is_survivor(), "pre-condition");
139 hr->install_surv_rate_group(_survivor_surv_rate_group);
140 hr->set_young_index_in_cset(young_index_in_cset);
141 }
142
143 #ifndef PRODUCT
144 bool verify_young_ages();
|
26 #define SHARE_VM_GC_G1_G1COLLECTORPOLICY_HPP
27
28 #include "gc/g1/g1CollectorState.hpp"
29 #include "gc/g1/g1GCPhaseTimes.hpp"
30 #include "gc/g1/g1InCSetState.hpp"
31 #include "gc/g1/g1InitialMarkToMixedTimeTracker.hpp"
32 #include "gc/g1/g1MMUTracker.hpp"
33 #include "gc/g1/g1Predictions.hpp"
34 #include "gc/shared/collectorPolicy.hpp"
35 #include "utilities/pair.hpp"
36
37 // A G1CollectorPolicy makes policy decisions that determine the
38 // characteristics of the collector. Examples include:
39 // * choice of collection set.
40 // * when to collect.
41
42 class HeapRegion;
43 class G1CollectionSet;
44 class CollectionSetChooser;
45 class G1IHOPControl;
46 class G1Analytics;
47 class G1YoungGenSizer;
48
49 class G1CollectorPolicy: public CollectorPolicy {
50 private:
51 G1IHOPControl* _ihop_control;
52
53 G1IHOPControl* create_ihop_control() const;
54 // Update the IHOP control with necessary statistics.
55 void update_ihop_prediction(double mutator_time_s,
56 size_t mutator_alloc_bytes,
57 size_t young_gen_size);
58 void report_ihop_statistics();
59
60 G1Predictions _predictor;
61 G1Analytics* _analytics;
62
63 G1MMUTracker* _mmu_tracker;
64
65 void initialize_alignments();
66 void initialize_flags();
67
68 double _full_collection_start_sec;
69
70 // Ratio check data for determining if heap growth is necessary.
71 uint _ratio_over_threshold_count;
72 double _ratio_over_threshold_sum;
73 uint _pauses_since_start;
74
75 uint _young_list_target_length;
76 uint _young_list_fixed_length;
77
78 // The max number of regions we can extend the eden by while the GC
79 // locker is active. This should be >= _young_list_target_length;
80 uint _young_list_max_length;
81
104
105 #ifndef PRODUCT
106 bool verify_young_ages(HeapRegion* head, SurvRateGroup *surv_rate_group);
107 #endif // PRODUCT
108
109 void adjust_concurrent_refinement(double update_rs_time,
110 double update_rs_processed_buffers,
111 double goal_ms);
112
113 double _pause_time_target_ms;
114
115 size_t _pending_cards;
116
117 // The amount of allocated bytes in old gen during the last mutator and the following
118 // young GC phase.
119 size_t _bytes_allocated_in_old_since_last_gc;
120
121 G1InitialMarkToMixedTimeTracker _initial_mark_to_mixed;
122 public:
123 const G1Predictions& predictor() const { return _predictor; }
124 const G1Analytics* analytics() const { return const_cast<const G1Analytics*>(_analytics); }
125
126 // Add the given number of bytes to the total number of allocated bytes in the old gen.
127 void add_bytes_allocated_in_old_since_last_gc(size_t bytes) { _bytes_allocated_in_old_since_last_gc += bytes; }
128
129 // Accessors
130
131 void set_region_eden(HeapRegion* hr, int young_index_in_cset) {
132 hr->set_eden();
133 hr->install_surv_rate_group(_short_lived_surv_rate_group);
134 hr->set_young_index_in_cset(young_index_in_cset);
135 }
136
137 void set_region_survivor(HeapRegion* hr, int young_index_in_cset) {
138 assert(hr->is_survivor(), "pre-condition");
139 hr->install_surv_rate_group(_survivor_surv_rate_group);
140 hr->set_young_index_in_cset(young_index_in_cset);
141 }
142
143 #ifndef PRODUCT
144 bool verify_young_ages();
|