13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_GC_G1_G1POLICY_HPP
26 #define SHARE_GC_G1_G1POLICY_HPP
27
28 #include "gc/g1/g1CollectorState.hpp"
29 #include "gc/g1/g1GCPhaseTimes.hpp"
30 #include "gc/g1/g1HeapRegionAttr.hpp"
31 #include "gc/g1/g1InitialMarkToMixedTimeTracker.hpp"
32 #include "gc/g1/g1MMUTracker.hpp"
33 #include "gc/g1/g1RemSetTrackingPolicy.hpp"
34 #include "gc/g1/g1Predictions.hpp"
35 #include "gc/g1/g1YoungGenSizer.hpp"
36 #include "gc/shared/gcCause.hpp"
37 #include "utilities/pair.hpp"
38
39 // A G1Policy makes policy decisions that determine the
40 // characteristics of the collector. Examples include:
41 // * choice of collection set.
42 // * when to collect.
43
44 class HeapRegion;
45 class G1CollectionSet;
46 class G1CollectionSetCandidates;
47 class G1CollectionSetChooser;
48 class G1IHOPControl;
49 class G1Analytics;
50 class G1SurvivorRegions;
51 class G1YoungGenSizer;
52 class GCPolicyCounters;
85 // The survivor rate groups below must be initialized after the predictor because they
86 // indirectly use it through the "this" object passed to their constructor.
87 G1SurvRateGroup* _eden_surv_rate_group;
88 G1SurvRateGroup* _survivor_surv_rate_group;
89
90 double _reserve_factor;
91 // This will be set when the heap is expanded
92 // for the first time during initialization.
93 uint _reserve_regions;
94
95 G1YoungGenSizer* _young_gen_sizer;
96
97 uint _free_regions_at_end_of_collection;
98
99 size_t _rs_length;
100
101 size_t _rs_length_prediction;
102
103 size_t _pending_cards_at_gc_start;
104
105 // The amount of allocated bytes in old gen during the last mutator and the following
106 // young GC phase.
107 size_t _bytes_allocated_in_old_since_last_gc;
108
109 G1InitialMarkToMixedTimeTracker _initial_mark_to_mixed;
110
111 bool should_update_surv_rate_group_predictors() {
112 return collector_state()->in_young_only_phase() && !collector_state()->mark_or_rebuild_in_progress();
113 }
114
115 double logged_cards_processing_time() const;
116 public:
117 const G1Predictions& predictor() const { return _predictor; }
118 const G1Analytics* analytics() const { return const_cast<const G1Analytics*>(_analytics); }
119
120 G1RemSetTrackingPolicy* remset_tracker() { return &_remset_tracker; }
121
122 // Add the given number of bytes to the total number of allocated bytes in the old gen.
123 void add_bytes_allocated_in_old_since_last_gc(size_t bytes) { _bytes_allocated_in_old_since_last_gc += bytes; }
124
125 void set_region_eden(HeapRegion* hr) {
126 hr->set_eden();
127 hr->install_surv_rate_group(_eden_surv_rate_group);
128 }
129
130 void set_region_survivor(HeapRegion* hr) {
131 assert(hr->is_survivor(), "pre-condition");
132 hr->install_surv_rate_group(_survivor_surv_rate_group);
133 }
134
135 void record_rs_length(size_t rs_length) {
136 _rs_length = rs_length;
137 }
138
139 double predict_base_elapsed_time_ms(size_t num_pending_cards) const;
140
141 private:
142 double predict_base_elapsed_time_ms(size_t num_pending_cards, size_t rs_length) const;
143
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13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_GC_G1_G1POLICY_HPP
26 #define SHARE_GC_G1_G1POLICY_HPP
27
28 #include "gc/g1/g1CollectorState.hpp"
29 #include "gc/g1/g1GCPhaseTimes.hpp"
30 #include "gc/g1/g1HeapRegionAttr.hpp"
31 #include "gc/g1/g1InitialMarkToMixedTimeTracker.hpp"
32 #include "gc/g1/g1MMUTracker.hpp"
33 #include "gc/g1/g1OldGenAllocationTracker.hpp"
34 #include "gc/g1/g1RemSetTrackingPolicy.hpp"
35 #include "gc/g1/g1Predictions.hpp"
36 #include "gc/g1/g1YoungGenSizer.hpp"
37 #include "gc/shared/gcCause.hpp"
38 #include "utilities/pair.hpp"
39
40 // A G1Policy makes policy decisions that determine the
41 // characteristics of the collector. Examples include:
42 // * choice of collection set.
43 // * when to collect.
44
45 class HeapRegion;
46 class G1CollectionSet;
47 class G1CollectionSetCandidates;
48 class G1CollectionSetChooser;
49 class G1IHOPControl;
50 class G1Analytics;
51 class G1SurvivorRegions;
52 class G1YoungGenSizer;
53 class GCPolicyCounters;
86 // The survivor rate groups below must be initialized after the predictor because they
87 // indirectly use it through the "this" object passed to their constructor.
88 G1SurvRateGroup* _eden_surv_rate_group;
89 G1SurvRateGroup* _survivor_surv_rate_group;
90
91 double _reserve_factor;
92 // This will be set when the heap is expanded
93 // for the first time during initialization.
94 uint _reserve_regions;
95
96 G1YoungGenSizer* _young_gen_sizer;
97
98 uint _free_regions_at_end_of_collection;
99
100 size_t _rs_length;
101
102 size_t _rs_length_prediction;
103
104 size_t _pending_cards_at_gc_start;
105
106 // Tracking the allocation in the old generation between
107 // two GCs.
108 G1OldGenAllocationTracker* _old_gen_alloc_tracker;
109
110 G1InitialMarkToMixedTimeTracker _initial_mark_to_mixed;
111
112 bool should_update_surv_rate_group_predictors() {
113 return collector_state()->in_young_only_phase() && !collector_state()->mark_or_rebuild_in_progress();
114 }
115
116 double logged_cards_processing_time() const;
117 public:
118 const G1Predictions& predictor() const { return _predictor; }
119 const G1Analytics* analytics() const { return const_cast<const G1Analytics*>(_analytics); }
120
121 G1RemSetTrackingPolicy* remset_tracker() { return &_remset_tracker; }
122
123 G1OldGenAllocationTracker* old_gen_alloc_tracker() { return _old_gen_alloc_tracker; }
124
125 void set_region_eden(HeapRegion* hr) {
126 hr->set_eden();
127 hr->install_surv_rate_group(_eden_surv_rate_group);
128 }
129
130 void set_region_survivor(HeapRegion* hr) {
131 assert(hr->is_survivor(), "pre-condition");
132 hr->install_surv_rate_group(_survivor_surv_rate_group);
133 }
134
135 void record_rs_length(size_t rs_length) {
136 _rs_length = rs_length;
137 }
138
139 double predict_base_elapsed_time_ms(size_t num_pending_cards) const;
140
141 private:
142 double predict_base_elapsed_time_ms(size_t num_pending_cards, size_t rs_length) const;
143
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