1 /* 2 * Copyright (c) 2013, 2015 Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 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_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMES_HPP 26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMES_HPP 27 28 #include "memory/allocation.hpp" 29 30 class LineBuffer; 31 32 template <class T> class WorkerDataArray; 33 34 class G1GCPhaseTimes : public CHeapObj<mtGC> { 35 friend class G1GCParPhasePrinter; 36 37 uint _active_gc_threads; 38 uint _max_gc_threads; 39 40 public: 41 enum GCParPhases { 42 GCWorkerStart, 43 ExtRootScan, 44 ThreadRoots, 45 StringTableRoots, 46 UniverseRoots, 47 JNIRoots, 48 ObjectSynchronizerRoots, 49 FlatProfilerRoots, 50 ManagementRoots, 51 SystemDictionaryRoots, 52 CLDGRoots, 53 JVMTIRoots, 54 CMRefRoots, 55 WaitForStrongCLD, 56 WeakCLDRoots, 57 SATBFiltering, 58 UpdateRS, 59 ScanRS, 60 CodeRoots, 61 ObjCopy, 62 Termination, 63 Other, 64 GCWorkerTotal, 65 GCWorkerEnd, 66 StringDedupQueueFixup, 67 StringDedupTableFixup, 68 RedirtyCards, 69 GCParPhasesSentinel 70 }; 71 72 private: 73 // Markers for grouping the phases in the GCPhases enum above 74 static const int GCMainParPhasesLast = GCWorkerEnd; 75 static const int StringDedupPhasesFirst = StringDedupQueueFixup; 76 static const int StringDedupPhasesLast = StringDedupTableFixup; 77 78 WorkerDataArray<double>* _gc_par_phases[GCParPhasesSentinel]; 79 WorkerDataArray<size_t>* _update_rs_processed_buffers; 80 WorkerDataArray<size_t>* _termination_attempts; 81 WorkerDataArray<size_t>* _redirtied_cards; 82 83 double _cur_collection_par_time_ms; 84 double _cur_collection_code_root_fixup_time_ms; 85 double _cur_strong_code_root_purge_time_ms; 86 87 double _cur_evac_fail_recalc_used; 88 double _cur_evac_fail_restore_remsets; 89 double _cur_evac_fail_remove_self_forwards; 90 91 double _cur_string_dedup_fixup_time_ms; 92 93 double _cur_clear_ct_time_ms; 94 double _cur_ref_proc_time_ms; 95 double _cur_ref_enq_time_ms; 96 97 double _cur_collection_start_sec; 98 double _root_region_scan_wait_time_ms; 99 100 double _recorded_young_cset_choice_time_ms; 101 double _recorded_non_young_cset_choice_time_ms; 102 103 double _recorded_redirty_logged_cards_time_ms; 104 105 double _recorded_young_free_cset_time_ms; 106 double _recorded_non_young_free_cset_time_ms; 107 108 double _cur_fast_reclaim_humongous_time_ms; 109 double _cur_fast_reclaim_humongous_register_time_ms; 110 size_t _cur_fast_reclaim_humongous_total; 111 size_t _cur_fast_reclaim_humongous_candidates; 112 size_t _cur_fast_reclaim_humongous_reclaimed; 113 114 double _cur_verify_before_time_ms; 115 double _cur_verify_after_time_ms; 116 117 // Helper methods for detailed logging 118 void print_stats(int level, const char* str, double value); 119 void print_stats(int level, const char* str, size_t value); 120 void print_stats(int level, const char* str, double value, uint workers); 121 122 public: 123 G1GCPhaseTimes(uint max_gc_threads); 124 void note_gc_start(uint active_gc_threads, bool mark_in_progress); 125 void note_gc_end(); 126 void print(double pause_time_sec); 127 128 // record the time a phase took in seconds 129 void record_time_secs(GCParPhases phase, uint worker_i, double secs); 130 131 // add a number of seconds to a phase 132 void add_time_secs(GCParPhases phase, uint worker_i, double secs); 133 134 void record_thread_work_item(GCParPhases phase, uint worker_i, size_t count); 135 136 // return the average time for a phase in milliseconds 137 double average_time_ms(GCParPhases phase); 138 139 size_t sum_thread_work_items(GCParPhases phase); 140 141 private: 142 double get_time_ms(GCParPhases phase, uint worker_i); 143 double sum_time_ms(GCParPhases phase); 144 double min_time_ms(GCParPhases phase); 145 double max_time_ms(GCParPhases phase); 146 size_t get_thread_work_item(GCParPhases phase, uint worker_i); 147 double average_thread_work_items(GCParPhases phase); 148 size_t min_thread_work_items(GCParPhases phase); 149 size_t max_thread_work_items(GCParPhases phase); 150 151 public: 152 153 void record_clear_ct_time(double ms) { 154 _cur_clear_ct_time_ms = ms; 155 } 156 157 void record_par_time(double ms) { 158 _cur_collection_par_time_ms = ms; 159 } 160 161 void record_code_root_fixup_time(double ms) { 162 _cur_collection_code_root_fixup_time_ms = ms; 163 } 164 165 void record_strong_code_root_purge_time(double ms) { 166 _cur_strong_code_root_purge_time_ms = ms; 167 } 168 169 void record_evac_fail_recalc_used_time(double ms) { 170 _cur_evac_fail_recalc_used = ms; 171 } 172 173 void record_evac_fail_restore_remsets(double ms) { 174 _cur_evac_fail_restore_remsets = ms; 175 } 176 177 void record_evac_fail_remove_self_forwards(double ms) { 178 _cur_evac_fail_remove_self_forwards = ms; 179 } 180 181 void record_string_dedup_fixup_time(double ms) { 182 _cur_string_dedup_fixup_time_ms = ms; 183 } 184 185 void record_ref_proc_time(double ms) { 186 _cur_ref_proc_time_ms = ms; 187 } 188 189 void record_ref_enq_time(double ms) { 190 _cur_ref_enq_time_ms = ms; 191 } 192 193 void record_root_region_scan_wait_time(double time_ms) { 194 _root_region_scan_wait_time_ms = time_ms; 195 } 196 197 void record_young_free_cset_time_ms(double time_ms) { 198 _recorded_young_free_cset_time_ms = time_ms; 199 } 200 201 void record_non_young_free_cset_time_ms(double time_ms) { 202 _recorded_non_young_free_cset_time_ms = time_ms; 203 } 204 205 void record_fast_reclaim_humongous_stats(double time_ms, size_t total, size_t candidates) { 206 _cur_fast_reclaim_humongous_register_time_ms = time_ms; 207 _cur_fast_reclaim_humongous_total = total; 208 _cur_fast_reclaim_humongous_candidates = candidates; 209 } 210 211 void record_fast_reclaim_humongous_time_ms(double value, size_t reclaimed) { 212 _cur_fast_reclaim_humongous_time_ms = value; 213 _cur_fast_reclaim_humongous_reclaimed = reclaimed; 214 } 215 216 void record_young_cset_choice_time_ms(double time_ms) { 217 _recorded_young_cset_choice_time_ms = time_ms; 218 } 219 220 void record_non_young_cset_choice_time_ms(double time_ms) { 221 _recorded_non_young_cset_choice_time_ms = time_ms; 222 } 223 224 void record_redirty_logged_cards_time_ms(double time_ms) { 225 _recorded_redirty_logged_cards_time_ms = time_ms; 226 } 227 228 void record_cur_collection_start_sec(double time_ms) { 229 _cur_collection_start_sec = time_ms; 230 } 231 232 void record_verify_before_time_ms(double time_ms) { 233 _cur_verify_before_time_ms = time_ms; 234 } 235 236 void record_verify_after_time_ms(double time_ms) { 237 _cur_verify_after_time_ms = time_ms; 238 } 239 240 double accounted_time_ms(); 241 242 double cur_collection_start_sec() { 243 return _cur_collection_start_sec; 244 } 245 246 double cur_collection_par_time_ms() { 247 return _cur_collection_par_time_ms; 248 } 249 250 double cur_clear_ct_time_ms() { 251 return _cur_clear_ct_time_ms; 252 } 253 254 double root_region_scan_wait_time_ms() { 255 return _root_region_scan_wait_time_ms; 256 } 257 258 double young_cset_choice_time_ms() { 259 return _recorded_young_cset_choice_time_ms; 260 } 261 262 double young_free_cset_time_ms() { 263 return _recorded_young_free_cset_time_ms; 264 } 265 266 double non_young_cset_choice_time_ms() { 267 return _recorded_non_young_cset_choice_time_ms; 268 } 269 270 double non_young_free_cset_time_ms() { 271 return _recorded_non_young_free_cset_time_ms; 272 } 273 274 double fast_reclaim_humongous_time_ms() { 275 return _cur_fast_reclaim_humongous_time_ms; 276 } 277 }; 278 279 class G1GCParPhaseTimesTracker : public StackObj { 280 double _start_time; 281 G1GCPhaseTimes::GCParPhases _phase; 282 G1GCPhaseTimes* _phase_times; 283 uint _worker_id; 284 public: 285 G1GCParPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1GCPhaseTimes::GCParPhases phase, uint worker_id); 286 ~G1GCParPhaseTimesTracker(); 287 }; 288 289 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMES_HPP