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 
  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_G1_G1GCPHASETIMES_HPP