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comparison src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp @ 1991:016a3628c885

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6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen Summary: Allow the eden to the expanded up to a point when the GC locker is active. Reviewed-by: jwilhelm, johnc, ysr, jcoomes
author tonyp
date Tue, 07 Dec 2010 16:47:42 -0500
parents 631f79e71e90
children 5c0b591e1074
comparison
equal deleted inserted replaced
1975:d9310331a29c 1991:016a3628c885
194 bool _adaptive_young_list_length; 194 bool _adaptive_young_list_length;
195 size_t _young_list_min_length; 195 size_t _young_list_min_length;
196 size_t _young_list_target_length; 196 size_t _young_list_target_length;
197 size_t _young_list_fixed_length; 197 size_t _young_list_fixed_length;
198 198
199 // The max number of regions we can extend the eden by while the GC
200 // locker is active. This should be >= _young_list_target_length;
201 size_t _young_list_max_length;
202
199 size_t _young_cset_length; 203 size_t _young_cset_length;
200 bool _last_young_gc_full; 204 bool _last_young_gc_full;
201 205
202 unsigned _full_young_pause_num; 206 unsigned _full_young_pause_num;
203 unsigned _partial_young_pause_num; 207 unsigned _partial_young_pause_num;
1111 // do that for any other surv rate groups 1115 // do that for any other surv rate groups
1112 } 1116 }
1113 1117
1114 bool is_young_list_full() { 1118 bool is_young_list_full() {
1115 size_t young_list_length = _g1->young_list()->length(); 1119 size_t young_list_length = _g1->young_list()->length();
1116 size_t young_list_max_length = _young_list_target_length; 1120 size_t young_list_target_length = _young_list_target_length;
1121 if (G1FixedEdenSize) {
1122 young_list_target_length -= _max_survivor_regions;
1123 }
1124 return young_list_length >= young_list_target_length;
1125 }
1126
1127 bool can_expand_young_list() {
1128 size_t young_list_length = _g1->young_list()->length();
1129 size_t young_list_max_length = _young_list_max_length;
1117 if (G1FixedEdenSize) { 1130 if (G1FixedEdenSize) {
1118 young_list_max_length -= _max_survivor_regions; 1131 young_list_max_length -= _max_survivor_regions;
1119 } 1132 }
1120 1133 return young_list_length < young_list_max_length;
1121 return young_list_length >= young_list_max_length; 1134 }
1122 } 1135
1123 void update_region_num(bool young); 1136 void update_region_num(bool young);
1124 1137
1125 bool in_young_gc_mode() { 1138 bool in_young_gc_mode() {
1126 return _in_young_gc_mode; 1139 return _in_young_gc_mode;
1127 } 1140 }
1228 1241
1229 void record_thread_age_table(ageTable* age_table) 1242 void record_thread_age_table(ageTable* age_table)
1230 { 1243 {
1231 _survivors_age_table.merge_par(age_table); 1244 _survivors_age_table.merge_par(age_table);
1232 } 1245 }
1246
1247 void calculate_max_gc_locker_expansion();
1233 1248
1234 // Calculates survivor space parameters. 1249 // Calculates survivor space parameters.
1235 void calculate_survivors_policy(); 1250 void calculate_survivors_policy();
1236 1251
1237 }; 1252 };