1 /* 2 * Copyright (c) 2013, 2016, 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 uint _max_gc_threads; 36 jlong _gc_start_counter; 37 double _gc_pause_time_ms; 38 39 public: 40 enum GCParPhases { 41 GCWorkerStart, 42 ExtRootScan, 43 ThreadRoots, 44 StringTableRoots, 45 UniverseRoots, 46 JNIRoots, 47 ObjectSynchronizerRoots, 48 FlatProfilerRoots, 49 ManagementRoots, 50 SystemDictionaryRoots, 51 CLDGRoots, 52 JVMTIRoots, 53 CMRefRoots, 54 WaitForStrongCLD, 55 WeakCLDRoots, 56 SATBFiltering, 57 UpdateRS, 58 ScanHCC, 59 ScanRS, 60 CodeRoots, 61 ObjCopy, 62 Termination, 63 Other, 64 GCWorkerTotal, 65 GCWorkerEnd, 66 StringDedupQueueFixup, 67 StringDedupTableFixup, 68 RedirtyCards, 69 PreserveCMReferents, 70 YoungFreeCSet, 71 NonYoungFreeCSet, 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_preserve_cm_referents_time_ms; 112 113 double _recorded_merge_pss_time_ms; 114 115 double _recorded_total_free_cset_time_ms; 116 117 double _recorded_serial_free_cset_time_ms; 118 119 double _cur_fast_reclaim_humongous_time_ms; 120 double _cur_fast_reclaim_humongous_register_time_ms; 121 size_t _cur_fast_reclaim_humongous_total; 122 size_t _cur_fast_reclaim_humongous_candidates; 123 size_t _cur_fast_reclaim_humongous_reclaimed; 124 125 double _cur_verify_before_time_ms; 126 double _cur_verify_after_time_ms; 127 128 double worker_time(GCParPhases phase, uint worker); 129 void note_gc_end(); 130 131 template <class T> 132 void details(T* phase, const char* indent); 133 void log_phase(WorkerDataArray<double>* phase, uint indent, outputStream* out, bool print_sum); 134 void debug_phase(WorkerDataArray<double>* phase); 135 void trace_phase(WorkerDataArray<double>* phase, bool print_sum = true); 136 137 public: 138 G1GCPhaseTimes(uint max_gc_threads); 139 void note_gc_start(); 140 void print(); 141 142 // record the time a phase took in seconds 143 void record_time_secs(GCParPhases phase, uint worker_i, double secs); 144 145 // add a number of seconds to a phase 146 void add_time_secs(GCParPhases phase, uint worker_i, double secs); 147 148 void record_thread_work_item(GCParPhases phase, uint worker_i, size_t count); 149 150 // return the average time for a phase in milliseconds 151 double average_time_ms(GCParPhases phase); 152 153 size_t sum_thread_work_items(GCParPhases phase); 154 155 public: 156 157 void record_clear_ct_time(double ms) { 158 _cur_clear_ct_time_ms = ms; 159 } 160 161 void record_expand_heap_time(double ms) { 162 _cur_expand_heap_time_ms = ms; 163 } 164 165 void record_par_time(double ms) { 166 _cur_collection_par_time_ms = ms; 167 } 168 169 void record_code_root_fixup_time(double ms) { 170 _cur_collection_code_root_fixup_time_ms = ms; 171 } 172 173 void record_strong_code_root_purge_time(double ms) { 174 _cur_strong_code_root_purge_time_ms = ms; 175 } 176 177 void record_evac_fail_recalc_used_time(double ms) { 178 _cur_evac_fail_recalc_used = ms; 179 } 180 181 void record_evac_fail_restore_remsets(double ms) { 182 _cur_evac_fail_restore_remsets = ms; 183 } 184 185 void record_evac_fail_remove_self_forwards(double ms) { 186 _cur_evac_fail_remove_self_forwards = ms; 187 } 188 189 void record_string_dedup_fixup_time(double ms) { 190 _cur_string_dedup_fixup_time_ms = ms; 191 } 192 193 void record_ref_proc_time(double ms) { 194 _cur_ref_proc_time_ms = ms; 195 } 196 197 void record_ref_enq_time(double ms) { 198 _cur_ref_enq_time_ms = ms; 199 } 200 201 void record_root_region_scan_wait_time(double time_ms) { 202 _root_region_scan_wait_time_ms = time_ms; 203 } 204 205 void record_total_free_cset_time_ms(double time_ms) { 206 _recorded_total_free_cset_time_ms = time_ms; 207 } 208 209 void record_serial_free_cset_time_ms(double time_ms) { 210 _recorded_serial_free_cset_time_ms = time_ms; 211 } 212 213 void record_fast_reclaim_humongous_stats(double time_ms, size_t total, size_t candidates) { 214 _cur_fast_reclaim_humongous_register_time_ms = time_ms; 215 _cur_fast_reclaim_humongous_total = total; 216 _cur_fast_reclaim_humongous_candidates = candidates; 217 } 218 219 void record_fast_reclaim_humongous_time_ms(double value, size_t reclaimed) { 220 _cur_fast_reclaim_humongous_time_ms = value; 221 _cur_fast_reclaim_humongous_reclaimed = reclaimed; 222 } 223 224 void record_young_cset_choice_time_ms(double time_ms) { 225 _recorded_young_cset_choice_time_ms = time_ms; 226 } 227 228 void record_non_young_cset_choice_time_ms(double time_ms) { 229 _recorded_non_young_cset_choice_time_ms = time_ms; 230 } 231 232 void record_redirty_logged_cards_time_ms(double time_ms) { 233 _recorded_redirty_logged_cards_time_ms = time_ms; 234 } 235 236 void record_preserve_cm_referents_time_ms(double time_ms) { 237 _recorded_preserve_cm_referents_time_ms = time_ms; 238 } 239 240 void record_merge_pss_time_ms(double time_ms) { 241 _recorded_merge_pss_time_ms = time_ms; 242 } 243 244 void record_cur_collection_start_sec(double time_ms) { 245 _cur_collection_start_sec = time_ms; 246 } 247 248 void record_verify_before_time_ms(double time_ms) { 249 _cur_verify_before_time_ms = time_ms; 250 } 251 252 void record_verify_after_time_ms(double time_ms) { 253 _cur_verify_after_time_ms = time_ms; 254 } 255 256 void inc_external_accounted_time_ms(double time_ms) { 257 _external_accounted_time_ms += time_ms; 258 } 259 260 double cur_collection_start_sec() { 261 return _cur_collection_start_sec; 262 } 263 264 double cur_collection_par_time_ms() { 265 return _cur_collection_par_time_ms; 266 } 267 268 double cur_clear_ct_time_ms() { 269 return _cur_clear_ct_time_ms; 270 } 271 272 double cur_expand_heap_time_ms() { 273 return _cur_expand_heap_time_ms; 274 } 275 276 double root_region_scan_wait_time_ms() { 277 return _root_region_scan_wait_time_ms; 278 } 279 280 double young_cset_choice_time_ms() { 281 return _recorded_young_cset_choice_time_ms; 282 } 283 284 double total_free_cset_time_ms() { 285 return _recorded_total_free_cset_time_ms; 286 } 287 288 double non_young_cset_choice_time_ms() { 289 return _recorded_non_young_cset_choice_time_ms; 290 } 291 292 double fast_reclaim_humongous_time_ms() { 293 return _cur_fast_reclaim_humongous_time_ms; 294 } 295 }; 296 297 class G1GCParPhaseTimesTracker : public StackObj { 298 double _start_time; 299 G1GCPhaseTimes::GCParPhases _phase; 300 G1GCPhaseTimes* _phase_times; 301 uint _worker_id; 302 public: 303 G1GCParPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1GCPhaseTimes::GCParPhases phase, uint worker_id); 304 ~G1GCParPhaseTimesTracker(); 305 }; 306 307 #endif // SHARE_VM_GC_G1_G1GCPHASETIMES_HPP