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src/share/vm/gc/g1/g1CollectorPolicy.cpp

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rev 9305 : imported patch 8140597-forcing-initial-mark-causes-abort-mixed-collections
rev 9306 : imported patch 8139874-after-full-gc-next-gc-is-always-young-only
rev 9307 : imported patch 8138740-start-initial-mark-right-after-mixed-gc-if-needed
rev 9309 : imported patch 8140689-skip-last-young-if-nothing-to-do-in-mixed
rev 9310 : dihop-changes
rev 9312 : imported patch 8136678-implement-adaptive-sizing-algorithm-for-IHOP
rev 9314 : imported patch 8136679-jfr-event-for-dynamic-ihop
rev 9315 : imported patch sangheon-review


1202   size_t last_unrestrained_young_length = 0;
1203   update_young_list_max_and_target_length(&last_unrestrained_young_length);
1204   update_rs_lengths_prediction();
1205 
1206   double marking_to_mixed_time = -1.0;
1207   if (!collector_state()->last_gc_was_young() && _initial_mark_to_mixed.has_result()) {
1208     marking_to_mixed_time = _initial_mark_to_mixed.last_marking_time();
1209     assert(marking_to_mixed_time > 0.0,
1210            "Initial mark to mixed time must be larger than zero but is %.3f",
1211            marking_to_mixed_time);
1212   }
1213   // Only update IHOP information on regular GCs.
1214   if (update_stats) {
1215     update_ihop_statistics(marking_to_mixed_time,
1216                            app_time_ms / 1000.0,
1217                            _last_old_allocated_bytes,
1218                            last_unrestrained_young_length * HeapRegion::GrainBytes);
1219   }
1220   _last_old_allocated_bytes = 0;
1221 


1222   // Note that _mmu_tracker->max_gc_time() returns the time in seconds.
1223   double update_rs_time_goal_ms = _mmu_tracker->max_gc_time() * MILLIUNITS * G1RSetUpdatingPauseTimePercent / 100.0;
1224 
1225   double scan_hcc_time_ms = average_time_ms(G1GCPhaseTimes::ScanHCC);
1226 
1227   if (update_rs_time_goal_ms < scan_hcc_time_ms) {
1228     ergo_verbose2(ErgoTiming,
1229                   "adjust concurrent refinement thresholds",
1230                   ergo_format_reason("Scanning the HCC expected to take longer than Update RS time goal")
1231                   ergo_format_ms("Update RS time goal")
1232                   ergo_format_ms("Scan HCC time"),
1233                   update_rs_time_goal_ms,
1234                   scan_hcc_time_ms);
1235 
1236     update_rs_time_goal_ms = 0;
1237   } else {
1238     update_rs_time_goal_ms -= scan_hcc_time_ms;
1239   }
1240   adjust_concurrent_refinement(average_time_ms(G1GCPhaseTimes::UpdateRS) - scan_hcc_time_ms,
1241                                phase_times()->sum_thread_work_items(G1GCPhaseTimes::UpdateRS),




1202   size_t last_unrestrained_young_length = 0;
1203   update_young_list_max_and_target_length(&last_unrestrained_young_length);
1204   update_rs_lengths_prediction();
1205 
1206   double marking_to_mixed_time = -1.0;
1207   if (!collector_state()->last_gc_was_young() && _initial_mark_to_mixed.has_result()) {
1208     marking_to_mixed_time = _initial_mark_to_mixed.last_marking_time();
1209     assert(marking_to_mixed_time > 0.0,
1210            "Initial mark to mixed time must be larger than zero but is %.3f",
1211            marking_to_mixed_time);
1212   }
1213   // Only update IHOP information on regular GCs.
1214   if (update_stats) {
1215     update_ihop_statistics(marking_to_mixed_time,
1216                            app_time_ms / 1000.0,
1217                            _last_old_allocated_bytes,
1218                            last_unrestrained_young_length * HeapRegion::GrainBytes);
1219   }
1220   _last_old_allocated_bytes = 0;
1221 
1222   _ihop_control->send_event(_g1->gc_tracer_stw());
1223 
1224   // Note that _mmu_tracker->max_gc_time() returns the time in seconds.
1225   double update_rs_time_goal_ms = _mmu_tracker->max_gc_time() * MILLIUNITS * G1RSetUpdatingPauseTimePercent / 100.0;
1226 
1227   double scan_hcc_time_ms = average_time_ms(G1GCPhaseTimes::ScanHCC);
1228 
1229   if (update_rs_time_goal_ms < scan_hcc_time_ms) {
1230     ergo_verbose2(ErgoTiming,
1231                   "adjust concurrent refinement thresholds",
1232                   ergo_format_reason("Scanning the HCC expected to take longer than Update RS time goal")
1233                   ergo_format_ms("Update RS time goal")
1234                   ergo_format_ms("Scan HCC time"),
1235                   update_rs_time_goal_ms,
1236                   scan_hcc_time_ms);
1237 
1238     update_rs_time_goal_ms = 0;
1239   } else {
1240     update_rs_time_goal_ms -= scan_hcc_time_ms;
1241   }
1242   adjust_concurrent_refinement(average_time_ms(G1GCPhaseTimes::UpdateRS) - scan_hcc_time_ms,
1243                                phase_times()->sum_thread_work_items(G1GCPhaseTimes::UpdateRS),
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