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 _active_gc_threads;
  36   uint _max_gc_threads;
  37   jlong _gc_start_counter;
  38   double _gc_pause_time_ms;
  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     ScanHCC,
  60     ScanRS,
  61     CodeRoots,
  62     ObjCopy,
  63     Termination,
  64     Other,
  65     GCWorkerTotal,
  66     GCWorkerEnd,
  67     StringDedupQueueFixup,
  68     StringDedupTableFixup,
  69     RedirtyCards,
  70     PreserveCMReferents,
  71     GCParPhasesSentinel
  72   };
  73 
  74  private:
  75   // Markers for grouping the phases in the GCPhases enum above
  76   static const int GCMainParPhasesLast = GCWorkerEnd;
  77   static const int StringDedupPhasesFirst = StringDedupQueueFixup;
  78   static const int StringDedupPhasesLast = StringDedupTableFixup;
  79 
  80   WorkerDataArray<double>* _gc_par_phases[GCParPhasesSentinel];
  81   WorkerDataArray<size_t>* _update_rs_processed_buffers;
  82   WorkerDataArray<size_t>* _termination_attempts;
  83   WorkerDataArray<size_t>* _redirtied_cards;
  84 
  85   double _cur_collection_par_time_ms;
  86   double _cur_collection_code_root_fixup_time_ms;
  87   double _cur_strong_code_root_purge_time_ms;
  88 
  89   double _cur_evac_fail_recalc_used;
  90   double _cur_evac_fail_restore_remsets;
  91   double _cur_evac_fail_remove_self_forwards;
  92 
  93   double _cur_string_dedup_fixup_time_ms;
  94 
  95   double _cur_clear_ct_time_ms;
  96   double _cur_expand_heap_time_ms;
  97   double _cur_ref_proc_time_ms;
  98   double _cur_ref_enq_time_ms;
  99 
 100   double _cur_collection_start_sec;
 101   double _root_region_scan_wait_time_ms;
 102 
 103   double _external_accounted_time_ms;
 104 
 105   double _recorded_young_cset_choice_time_ms;
 106   double _recorded_non_young_cset_choice_time_ms;
 107 
 108   double _recorded_redirty_logged_cards_time_ms;
 109 
 110   double _recorded_preserve_cm_referents_time_ms;
 111 
 112   double _recorded_merge_pss_time_ms;
 113 
 114   double _recorded_young_free_cset_time_ms;
 115   double _recorded_non_young_free_cset_time_ms;
 116 
 117   double _cur_fast_reclaim_humongous_time_ms;
 118   double _cur_fast_reclaim_humongous_register_time_ms;
 119   size_t _cur_fast_reclaim_humongous_total;
 120   size_t _cur_fast_reclaim_humongous_candidates;
 121   size_t _cur_fast_reclaim_humongous_reclaimed;
 122 
 123   double _cur_verify_before_time_ms;
 124   double _cur_verify_after_time_ms;
 125 
 126   void note_gc_end();
 127 
 128   template <class T>
 129   void details(T* phase, const char* indent);
 130   void log_phase(WorkerDataArray<double>* phase, uint indent, outputStream* out, bool print_sum);
 131   void debug_phase(WorkerDataArray<double>* phase);
 132   void trace_phase(WorkerDataArray<double>* phase, bool print_sum = true);
 133 
 134  public:
 135   G1GCPhaseTimes(uint max_gc_threads);
 136   void note_gc_start(uint active_gc_threads);
 137   void print();
 138 
 139   // record the time a phase took in seconds
 140   void record_time_secs(GCParPhases phase, uint worker_i, double secs);
 141 
 142   // add a number of seconds to a phase
 143   void add_time_secs(GCParPhases phase, uint worker_i, double secs);
 144 
 145   void record_thread_work_item(GCParPhases phase, uint worker_i, size_t count);
 146 
 147   // return the average time for a phase in milliseconds
 148   double average_time_ms(GCParPhases phase);
 149 
 150   size_t sum_thread_work_items(GCParPhases phase);
 151 
 152  public:
 153 
 154   void record_clear_ct_time(double ms) {
 155     _cur_clear_ct_time_ms = ms;
 156   }
 157 
 158   void record_expand_heap_time(double ms) {
 159     _cur_expand_heap_time_ms = ms;
 160   }
 161 
 162   void record_par_time(double ms) {
 163     _cur_collection_par_time_ms = ms;
 164   }
 165 
 166   void record_code_root_fixup_time(double ms) {
 167     _cur_collection_code_root_fixup_time_ms = ms;
 168   }
 169 
 170   void record_strong_code_root_purge_time(double ms) {
 171     _cur_strong_code_root_purge_time_ms = ms;
 172   }
 173 
 174   void record_evac_fail_recalc_used_time(double ms) {
 175     _cur_evac_fail_recalc_used = ms;
 176   }
 177 
 178   void record_evac_fail_restore_remsets(double ms) {
 179     _cur_evac_fail_restore_remsets = ms;
 180   }
 181 
 182   void record_evac_fail_remove_self_forwards(double ms) {
 183     _cur_evac_fail_remove_self_forwards = ms;
 184   }
 185 
 186   void record_string_dedup_fixup_time(double ms) {
 187     _cur_string_dedup_fixup_time_ms = ms;
 188   }
 189 
 190   void record_ref_proc_time(double ms) {
 191     _cur_ref_proc_time_ms = ms;
 192   }
 193 
 194   void record_ref_enq_time(double ms) {
 195     _cur_ref_enq_time_ms = ms;
 196   }
 197 
 198   void record_root_region_scan_wait_time(double time_ms) {
 199     _root_region_scan_wait_time_ms = time_ms;
 200   }
 201 
 202   void record_young_free_cset_time_ms(double time_ms) {
 203     _recorded_young_free_cset_time_ms = time_ms;
 204   }
 205 
 206   void record_non_young_free_cset_time_ms(double time_ms) {
 207     _recorded_non_young_free_cset_time_ms = time_ms;
 208   }
 209 
 210   void record_fast_reclaim_humongous_stats(double time_ms, size_t total, size_t candidates) {
 211     _cur_fast_reclaim_humongous_register_time_ms = time_ms;
 212     _cur_fast_reclaim_humongous_total = total;
 213     _cur_fast_reclaim_humongous_candidates = candidates;
 214   }
 215 
 216   void record_fast_reclaim_humongous_time_ms(double value, size_t reclaimed) {
 217     _cur_fast_reclaim_humongous_time_ms = value;
 218     _cur_fast_reclaim_humongous_reclaimed = reclaimed;
 219   }
 220 
 221   void record_young_cset_choice_time_ms(double time_ms) {
 222     _recorded_young_cset_choice_time_ms = time_ms;
 223   }
 224 
 225   void record_non_young_cset_choice_time_ms(double time_ms) {
 226     _recorded_non_young_cset_choice_time_ms = time_ms;
 227   }
 228 
 229   void record_redirty_logged_cards_time_ms(double time_ms) {
 230     _recorded_redirty_logged_cards_time_ms = time_ms;
 231   }
 232 
 233   void record_preserve_cm_referents_time_ms(double time_ms) {
 234     _recorded_preserve_cm_referents_time_ms = time_ms;
 235   }
 236 
 237   void record_merge_pss_time_ms(double time_ms) {
 238     _recorded_merge_pss_time_ms = time_ms;
 239   }
 240 
 241   void record_cur_collection_start_sec(double time_ms) {
 242     _cur_collection_start_sec = time_ms;
 243   }
 244 
 245   void record_verify_before_time_ms(double time_ms) {
 246     _cur_verify_before_time_ms = time_ms;
 247   }
 248 
 249   void record_verify_after_time_ms(double time_ms) {
 250     _cur_verify_after_time_ms = time_ms;
 251   }
 252 
 253   void inc_external_accounted_time_ms(double time_ms) {
 254     _external_accounted_time_ms += time_ms;
 255   }
 256 
 257   double cur_collection_start_sec() {
 258     return _cur_collection_start_sec;
 259   }
 260 
 261   double cur_collection_par_time_ms() {
 262     return _cur_collection_par_time_ms;
 263   }
 264 
 265   double cur_clear_ct_time_ms() {
 266     return _cur_clear_ct_time_ms;
 267   }
 268 
 269   double cur_expand_heap_time_ms() {
 270     return _cur_expand_heap_time_ms;
 271   }
 272 
 273   double root_region_scan_wait_time_ms() {
 274     return _root_region_scan_wait_time_ms;
 275   }
 276 
 277   double young_cset_choice_time_ms() {
 278     return _recorded_young_cset_choice_time_ms;
 279   }
 280 
 281   double young_free_cset_time_ms() {
 282     return _recorded_young_free_cset_time_ms;
 283   }
 284 
 285   double non_young_cset_choice_time_ms() {
 286     return _recorded_non_young_cset_choice_time_ms;
 287   }
 288 
 289   double non_young_free_cset_time_ms() {
 290     return _recorded_non_young_free_cset_time_ms;
 291   }
 292 
 293   double fast_reclaim_humongous_time_ms() {
 294     return _cur_fast_reclaim_humongous_time_ms;
 295   }
 296 };
 297 
 298 class G1GCParPhaseTimesTracker : public StackObj {
 299   double _start_time;
 300   G1GCPhaseTimes::GCParPhases _phase;
 301   G1GCPhaseTimes* _phase_times;
 302   uint _worker_id;
 303 public:
 304   G1GCParPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1GCPhaseTimes::GCParPhases phase, uint worker_id);
 305   ~G1GCParPhaseTimesTracker();
 306 };
 307 
 308 #endif // SHARE_VM_GC_G1_G1GCPHASETIMES_HPP