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_G1_G1GCPHASETIMES_HPP 26 #define SHARE_VM_GC_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 jlong _gc_start_counter; 40 double _gc_pause_time_ms; 41 42 public: 43 enum GCParPhases { 44 GCWorkerStart, 45 ExtRootScan, 46 ThreadRoots, 47 StringTableRoots, 48 UniverseRoots, 49 JNIRoots, 50 ObjectSynchronizerRoots, 51 FlatProfilerRoots, 52 ManagementRoots, 53 SystemDictionaryRoots, 54 CLDGRoots, 55 JVMTIRoots, 56 CMRefRoots, 57 WaitForStrongCLD, 58 WeakCLDRoots, 59 SATBFiltering, 60 UpdateRS, 61 ScanHCC, 62 ScanRS, 63 CodeRoots, 64 ObjCopy, 65 Termination, 66 Other, 67 GCWorkerTotal, 68 GCWorkerEnd, 69 StringDedupQueueFixup, 70 StringDedupTableFixup, 71 RedirtyCards, 72 GCParPhasesSentinel 73 }; 74 75 private: 76 // Markers for grouping the phases in the GCPhases enum above 77 static const int GCMainParPhasesLast = GCWorkerEnd; 78 static const int StringDedupPhasesFirst = StringDedupQueueFixup; 79 static const int StringDedupPhasesLast = StringDedupTableFixup; 80 81 WorkerDataArray<double>* _gc_par_phases[GCParPhasesSentinel]; 82 WorkerDataArray<size_t>* _update_rs_processed_buffers; 83 WorkerDataArray<size_t>* _termination_attempts; 84 WorkerDataArray<size_t>* _redirtied_cards; 85 86 double _cur_collection_par_time_ms; 87 double _cur_collection_code_root_fixup_time_ms; 88 double _cur_strong_code_root_purge_time_ms; 89 90 double _cur_evac_fail_recalc_used; 91 double _cur_evac_fail_restore_remsets; 92 double _cur_evac_fail_remove_self_forwards; 93 94 double _cur_string_dedup_fixup_time_ms; 95 96 double _cur_clear_ct_time_ms; 97 double _cur_expand_heap_time_ms; 98 double _cur_ref_proc_time_ms; 99 double _cur_ref_enq_time_ms; 100 101 double _cur_collection_start_sec; 102 double _root_region_scan_wait_time_ms; 103 104 double _external_accounted_time_ms; 105 106 double _recorded_young_cset_choice_time_ms; 107 double _recorded_non_young_cset_choice_time_ms; 108 109 double _recorded_redirty_logged_cards_time_ms; 110 111 double _recorded_young_free_cset_time_ms; 112 double _recorded_non_young_free_cset_time_ms; 113 114 double _cur_fast_reclaim_humongous_time_ms; 115 double _cur_fast_reclaim_humongous_register_time_ms; 116 size_t _cur_fast_reclaim_humongous_total; 117 size_t _cur_fast_reclaim_humongous_candidates; 118 size_t _cur_fast_reclaim_humongous_reclaimed; 119 120 double _cur_verify_before_time_ms; 121 double _cur_verify_after_time_ms; 122 123 // Helper methods for detailed logging 124 void print_stats(const char*, const char* str, double value); 125 126 void note_gc_end(); 127 128 public: 129 G1GCPhaseTimes(uint max_gc_threads); 130 void note_gc_start(uint active_gc_threads); 131 void print(); 132 133 // record the time a phase took in seconds 134 void record_time_secs(GCParPhases phase, uint worker_i, double secs); 135 136 // add a number of seconds to a phase 137 void add_time_secs(GCParPhases phase, uint worker_i, double secs); 138 139 void record_thread_work_item(GCParPhases phase, uint worker_i, size_t count); 140 141 // return the average time for a phase in milliseconds 142 double average_time_ms(GCParPhases phase); 143 144 size_t sum_thread_work_items(GCParPhases phase); 145 146 private: 147 double get_time_ms(GCParPhases phase, uint worker_i); 148 double sum_time_ms(GCParPhases phase); 149 double min_time_ms(GCParPhases phase); 150 double max_time_ms(GCParPhases phase); 151 size_t get_thread_work_item(GCParPhases phase, uint worker_i); 152 double average_thread_work_items(GCParPhases phase); 153 size_t min_thread_work_items(GCParPhases phase); 154 size_t max_thread_work_items(GCParPhases phase); 155 156 public: 157 158 void record_clear_ct_time(double ms) { 159 _cur_clear_ct_time_ms = ms; 160 } 161 162 void record_expand_heap_time(double ms) { 163 _cur_expand_heap_time_ms = ms; 164 } 165 166 void record_par_time(double ms) { 167 _cur_collection_par_time_ms = ms; 168 } 169 170 void record_code_root_fixup_time(double ms) { 171 _cur_collection_code_root_fixup_time_ms = ms; 172 } 173 174 void record_strong_code_root_purge_time(double ms) { 175 _cur_strong_code_root_purge_time_ms = ms; 176 } 177 178 void record_evac_fail_recalc_used_time(double ms) { 179 _cur_evac_fail_recalc_used = ms; 180 } 181 182 void record_evac_fail_restore_remsets(double ms) { 183 _cur_evac_fail_restore_remsets = ms; 184 } 185 186 void record_evac_fail_remove_self_forwards(double ms) { 187 _cur_evac_fail_remove_self_forwards = ms; 188 } 189 190 void record_string_dedup_fixup_time(double ms) { 191 _cur_string_dedup_fixup_time_ms = ms; 192 } 193 194 void record_ref_proc_time(double ms) { 195 _cur_ref_proc_time_ms = ms; 196 } 197 198 void record_ref_enq_time(double ms) { 199 _cur_ref_enq_time_ms = ms; 200 } 201 202 void record_root_region_scan_wait_time(double time_ms) { 203 _root_region_scan_wait_time_ms = time_ms; 204 } 205 206 void record_young_free_cset_time_ms(double time_ms) { 207 _recorded_young_free_cset_time_ms = time_ms; 208 } 209 210 void record_non_young_free_cset_time_ms(double time_ms) { 211 _recorded_non_young_free_cset_time_ms = time_ms; 212 } 213 214 void record_fast_reclaim_humongous_stats(double time_ms, size_t total, size_t candidates) { 215 _cur_fast_reclaim_humongous_register_time_ms = time_ms; 216 _cur_fast_reclaim_humongous_total = total; 217 _cur_fast_reclaim_humongous_candidates = candidates; 218 } 219 220 void record_fast_reclaim_humongous_time_ms(double value, size_t reclaimed) { 221 _cur_fast_reclaim_humongous_time_ms = value; 222 _cur_fast_reclaim_humongous_reclaimed = reclaimed; 223 } 224 225 void record_young_cset_choice_time_ms(double time_ms) { 226 _recorded_young_cset_choice_time_ms = time_ms; 227 } 228 229 void record_non_young_cset_choice_time_ms(double time_ms) { 230 _recorded_non_young_cset_choice_time_ms = time_ms; 231 } 232 233 void record_redirty_logged_cards_time_ms(double time_ms) { 234 _recorded_redirty_logged_cards_time_ms = time_ms; 235 } 236 237 void record_cur_collection_start_sec(double time_ms) { 238 _cur_collection_start_sec = time_ms; 239 } 240 241 void record_verify_before_time_ms(double time_ms) { 242 _cur_verify_before_time_ms = time_ms; 243 } 244 245 void record_verify_after_time_ms(double time_ms) { 246 _cur_verify_after_time_ms = time_ms; 247 } 248 249 void inc_external_accounted_time_ms(double time_ms) { 250 _external_accounted_time_ms += time_ms; 251 } 252 253 double accounted_time_ms(); 254 255 double cur_collection_start_sec() { 256 return _cur_collection_start_sec; 257 } 258 259 double cur_collection_par_time_ms() { 260 return _cur_collection_par_time_ms; 261 } 262 263 double cur_clear_ct_time_ms() { 264 return _cur_clear_ct_time_ms; 265 } 266 267 double cur_expand_heap_time_ms() { 268 return _cur_expand_heap_time_ms; 269 } 270 271 double root_region_scan_wait_time_ms() { 272 return _root_region_scan_wait_time_ms; 273 } 274 275 double young_cset_choice_time_ms() { 276 return _recorded_young_cset_choice_time_ms; 277 } 278 279 double young_free_cset_time_ms() { 280 return _recorded_young_free_cset_time_ms; 281 } 282 283 double non_young_cset_choice_time_ms() { 284 return _recorded_non_young_cset_choice_time_ms; 285 } 286 287 double non_young_free_cset_time_ms() { 288 return _recorded_non_young_free_cset_time_ms; 289 } 290 291 double fast_reclaim_humongous_time_ms() { 292 return _cur_fast_reclaim_humongous_time_ms; 293 } 294 }; 295 296 class G1GCParPhaseTimesTracker : public StackObj { 297 double _start_time; 298 G1GCPhaseTimes::GCParPhases _phase; 299 G1GCPhaseTimes* _phase_times; 300 uint _worker_id; 301 public: 302 G1GCParPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1GCPhaseTimes::GCParPhases phase, uint worker_id); 303 ~G1GCParPhaseTimesTracker(); 304 }; 305 306 #endif // SHARE_VM_GC_G1_G1GCPHASETIMES_HPP