rev 49826 : imported patch 6672778-partial-queue-trimming
rev 49827 : imported patch 6672778-refactoring
rev 49828 : imported patch 6672778-stefanj-review
rev 49829 : imported patch 6672778-inconsistent-time-fixes
rev 49830 : [mq]: 6672778-satb-timing-fix

   1 /*
   2  * Copyright (c) 2013, 2018, 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 #include "precompiled.hpp"
  26 #include "gc/g1/g1CollectedHeap.inline.hpp"
  27 #include "gc/g1/g1GCPhaseTimes.hpp"
  28 #include "gc/g1/g1HotCardCache.hpp"
  29 #include "gc/g1/g1ParScanThreadState.inline.hpp"
  30 #include "gc/g1/g1StringDedup.hpp"
  31 #include "gc/shared/workerDataArray.inline.hpp"
  32 #include "memory/resourceArea.hpp"
  33 #include "logging/log.hpp"
  34 #include "logging/logStream.hpp"
  35 #include "runtime/timer.hpp"
  36 #include "runtime/os.hpp"
  37 #include "utilities/macros.hpp"
  38 
  39 static const char* Indents[5] = {"", "  ", "    ", "      ", "        "};
  40 
  41 G1GCPhaseTimes::G1GCPhaseTimes(STWGCTimer* gc_timer, uint max_gc_threads) :
  42   _max_gc_threads(max_gc_threads),
  43   _gc_start_counter(0),
  44   _gc_pause_time_ms(0.0),
  45   _ref_phase_times((GCTimer*)gc_timer, max_gc_threads)
  46 {
  47   assert(max_gc_threads > 0, "Must have some GC threads");
  48 
  49   _gc_par_phases[GCWorkerStart] = new WorkerDataArray<double>(max_gc_threads, "GC Worker Start (ms):");
  50   _gc_par_phases[ExtRootScan] = new WorkerDataArray<double>(max_gc_threads, "Ext Root Scanning (ms):");
  51 
  52   // Root scanning phases
  53   _gc_par_phases[ThreadRoots] = new WorkerDataArray<double>(max_gc_threads, "Thread Roots (ms):");
  54   _gc_par_phases[StringTableRoots] = new WorkerDataArray<double>(max_gc_threads, "StringTable Roots (ms):");
  55   _gc_par_phases[UniverseRoots] = new WorkerDataArray<double>(max_gc_threads, "Universe Roots (ms):");
  56   _gc_par_phases[JNIRoots] = new WorkerDataArray<double>(max_gc_threads, "JNI Handles Roots (ms):");
  57   _gc_par_phases[ObjectSynchronizerRoots] = new WorkerDataArray<double>(max_gc_threads, "ObjectSynchronizer Roots (ms):");
  58   _gc_par_phases[ManagementRoots] = new WorkerDataArray<double>(max_gc_threads, "Management Roots (ms):");
  59   _gc_par_phases[SystemDictionaryRoots] = new WorkerDataArray<double>(max_gc_threads, "SystemDictionary Roots (ms):");
  60   _gc_par_phases[CLDGRoots] = new WorkerDataArray<double>(max_gc_threads, "CLDG Roots (ms):");
  61   _gc_par_phases[JVMTIRoots] = new WorkerDataArray<double>(max_gc_threads, "JVMTI Roots (ms):");
  62   _gc_par_phases[CMRefRoots] = new WorkerDataArray<double>(max_gc_threads, "CM RefProcessor Roots (ms):");
  63   _gc_par_phases[WaitForStrongCLD] = new WorkerDataArray<double>(max_gc_threads, "Wait For Strong CLD (ms):");
  64   _gc_par_phases[WeakCLDRoots] = new WorkerDataArray<double>(max_gc_threads, "Weak CLD Roots (ms):");
  65   _gc_par_phases[SATBFiltering] = new WorkerDataArray<double>(max_gc_threads, "SATB Filtering (ms):");
  66 
  67   _gc_par_phases[UpdateRS] = new WorkerDataArray<double>(max_gc_threads, "Update RS (ms):");
  68   if (G1HotCardCache::default_use_cache()) {
  69     _gc_par_phases[ScanHCC] = new WorkerDataArray<double>(max_gc_threads, "Scan HCC (ms):");
  70   } else {
  71     _gc_par_phases[ScanHCC] = NULL;
  72   }
  73   _gc_par_phases[ScanRS] = new WorkerDataArray<double>(max_gc_threads, "Scan RS (ms):");
  74   _gc_par_phases[CodeRoots] = new WorkerDataArray<double>(max_gc_threads, "Code Root Scanning (ms):");
  75 #if INCLUDE_AOT
  76   _gc_par_phases[AOTCodeRoots] = new WorkerDataArray<double>(max_gc_threads, "AOT Root Scanning (ms):");
  77 #endif
  78   _gc_par_phases[ObjCopy] = new WorkerDataArray<double>(max_gc_threads, "Object Copy (ms):");
  79   _gc_par_phases[Termination] = new WorkerDataArray<double>(max_gc_threads, "Termination (ms):");
  80   _gc_par_phases[GCWorkerTotal] = new WorkerDataArray<double>(max_gc_threads, "GC Worker Total (ms):");
  81   _gc_par_phases[GCWorkerEnd] = new WorkerDataArray<double>(max_gc_threads, "GC Worker End (ms):");
  82   _gc_par_phases[Other] = new WorkerDataArray<double>(max_gc_threads, "GC Worker Other (ms):");
  83 
  84   _scan_rs_scanned_cards = new WorkerDataArray<size_t>(max_gc_threads, "Scanned Cards:");
  85   _gc_par_phases[ScanRS]->link_thread_work_items(_scan_rs_scanned_cards, ScanRSScannedCards);
  86   _scan_rs_claimed_cards = new WorkerDataArray<size_t>(max_gc_threads, "Claimed Cards:");
  87   _gc_par_phases[ScanRS]->link_thread_work_items(_scan_rs_claimed_cards, ScanRSClaimedCards);
  88   _scan_rs_skipped_cards = new WorkerDataArray<size_t>(max_gc_threads, "Skipped Cards:");
  89   _gc_par_phases[ScanRS]->link_thread_work_items(_scan_rs_skipped_cards, ScanRSSkippedCards);
  90 
  91   _update_rs_processed_buffers = new WorkerDataArray<size_t>(max_gc_threads, "Processed Buffers:");
  92   _gc_par_phases[UpdateRS]->link_thread_work_items(_update_rs_processed_buffers, UpdateRSProcessedBuffers);
  93   _update_rs_scanned_cards = new WorkerDataArray<size_t>(max_gc_threads, "Scanned Cards:");
  94   _gc_par_phases[UpdateRS]->link_thread_work_items(_update_rs_scanned_cards, UpdateRSScannedCards);
  95   _update_rs_skipped_cards = new WorkerDataArray<size_t>(max_gc_threads, "Skipped Cards:");
  96   _gc_par_phases[UpdateRS]->link_thread_work_items(_update_rs_skipped_cards, ScanRSSkippedCards);
  97 
  98   _termination_attempts = new WorkerDataArray<size_t>(max_gc_threads, "Termination Attempts:");
  99   _gc_par_phases[Termination]->link_thread_work_items(_termination_attempts);
 100 
 101   if (UseStringDeduplication) {
 102     _gc_par_phases[StringDedupQueueFixup] = new WorkerDataArray<double>(max_gc_threads, "Queue Fixup (ms):");
 103     _gc_par_phases[StringDedupTableFixup] = new WorkerDataArray<double>(max_gc_threads, "Table Fixup (ms):");
 104   } else {
 105     _gc_par_phases[StringDedupQueueFixup] = NULL;
 106     _gc_par_phases[StringDedupTableFixup] = NULL;
 107   }
 108 
 109   _gc_par_phases[RedirtyCards] = new WorkerDataArray<double>(max_gc_threads, "Parallel Redirty (ms):");
 110   _redirtied_cards = new WorkerDataArray<size_t>(max_gc_threads, "Redirtied Cards:");
 111   _gc_par_phases[RedirtyCards]->link_thread_work_items(_redirtied_cards);
 112 
 113   _gc_par_phases[YoungFreeCSet] = new WorkerDataArray<double>(max_gc_threads, "Young Free Collection Set (ms):");
 114   _gc_par_phases[NonYoungFreeCSet] = new WorkerDataArray<double>(max_gc_threads, "Non-Young Free Collection Set (ms):");
 115 
 116   _gc_par_phases[PreserveCMReferents] = new WorkerDataArray<double>(max_gc_threads, "Parallel Preserve CM Refs (ms):");
 117 
 118   reset();
 119 }
 120 
 121 void G1GCPhaseTimes::reset() {
 122   _cur_collection_par_time_ms = 0.0;
 123   _cur_collection_code_root_fixup_time_ms = 0.0;
 124   _cur_strong_code_root_purge_time_ms = 0.0;
 125   _cur_evac_fail_recalc_used = 0.0;
 126   _cur_evac_fail_remove_self_forwards = 0.0;
 127   _cur_string_dedup_fixup_time_ms = 0.0;
 128   _cur_prepare_tlab_time_ms = 0.0;
 129   _cur_resize_tlab_time_ms = 0.0;
 130   _cur_derived_pointer_table_update_time_ms = 0.0;
 131   _cur_clear_ct_time_ms = 0.0;
 132   _cur_expand_heap_time_ms = 0.0;
 133   _cur_ref_proc_time_ms = 0.0;
 134   _cur_ref_enq_time_ms = 0.0;
 135   _cur_weak_ref_proc_time_ms = 0.0;
 136   _cur_collection_start_sec = 0.0;
 137   _root_region_scan_wait_time_ms = 0.0;
 138   _external_accounted_time_ms = 0.0;
 139   _recorded_clear_claimed_marks_time_ms = 0.0;
 140   _recorded_young_cset_choice_time_ms = 0.0;
 141   _recorded_non_young_cset_choice_time_ms = 0.0;
 142   _recorded_redirty_logged_cards_time_ms = 0.0;
 143   _recorded_preserve_cm_referents_time_ms = 0.0;
 144   _recorded_merge_pss_time_ms = 0.0;
 145   _recorded_start_new_cset_time_ms = 0.0;
 146   _recorded_total_free_cset_time_ms = 0.0;
 147   _recorded_serial_free_cset_time_ms = 0.0;
 148   _cur_fast_reclaim_humongous_time_ms = 0.0;
 149   _cur_fast_reclaim_humongous_register_time_ms = 0.0;
 150   _cur_fast_reclaim_humongous_total = 0;
 151   _cur_fast_reclaim_humongous_candidates = 0;
 152   _cur_fast_reclaim_humongous_reclaimed = 0;
 153   _cur_verify_before_time_ms = 0.0;
 154   _cur_verify_after_time_ms = 0.0;
 155 
 156   for (int i = 0; i < GCParPhasesSentinel; i++) {
 157     if (_gc_par_phases[i] != NULL) {
 158       _gc_par_phases[i]->reset();
 159     }
 160   }
 161 
 162   _ref_phase_times.reset();
 163 }
 164 
 165 void G1GCPhaseTimes::note_gc_start() {
 166   _gc_start_counter = os::elapsed_counter();
 167   reset();
 168 }
 169 
 170 #define ASSERT_PHASE_UNINITIALIZED(phase) \
 171     assert(_gc_par_phases[phase] == NULL || _gc_par_phases[phase]->get(i) == uninitialized, "Phase " #phase " reported for thread that was not started");
 172 
 173 double G1GCPhaseTimes::worker_time(GCParPhases phase, uint worker) {
 174   if (_gc_par_phases[phase] == NULL) {
 175     return 0.0;
 176   }
 177   double value = _gc_par_phases[phase]->get(worker);
 178   if (value != WorkerDataArray<double>::uninitialized()) {
 179     return value;
 180   }
 181   return 0.0;
 182 }
 183 
 184 void G1GCPhaseTimes::note_gc_end() {
 185   _gc_pause_time_ms = TimeHelper::counter_to_millis(os::elapsed_counter() - _gc_start_counter);
 186 
 187   double uninitialized = WorkerDataArray<double>::uninitialized();
 188 
 189   for (uint i = 0; i < _max_gc_threads; i++) {
 190     double worker_start = _gc_par_phases[GCWorkerStart]->get(i);
 191     if (worker_start != uninitialized) {
 192       assert(_gc_par_phases[GCWorkerEnd]->get(i) != uninitialized, "Worker started but not ended.");
 193       double total_worker_time = _gc_par_phases[GCWorkerEnd]->get(i) - _gc_par_phases[GCWorkerStart]->get(i);
 194       record_time_secs(GCWorkerTotal, i , total_worker_time);
 195 
 196       double worker_known_time = worker_time(ExtRootScan, i) +
 197                                  worker_time(ScanHCC, i) +
 198                                  worker_time(UpdateRS, i) +
 199                                  worker_time(ScanRS, i) +
 200                                  worker_time(CodeRoots, i) +
 201                                  worker_time(ObjCopy, i) +
 202                                  worker_time(Termination, i);


 203 
 204       record_time_secs(Other, i, total_worker_time - worker_known_time);
 205     } else {
 206       // Make sure all slots are uninitialized since this thread did not seem to have been started
 207       ASSERT_PHASE_UNINITIALIZED(GCWorkerEnd);
 208       ASSERT_PHASE_UNINITIALIZED(ExtRootScan);

 209       ASSERT_PHASE_UNINITIALIZED(ScanHCC);
 210       ASSERT_PHASE_UNINITIALIZED(UpdateRS);
 211       ASSERT_PHASE_UNINITIALIZED(ScanRS);
 212       ASSERT_PHASE_UNINITIALIZED(CodeRoots);
 213       ASSERT_PHASE_UNINITIALIZED(ObjCopy);
 214       ASSERT_PHASE_UNINITIALIZED(Termination);
 215     }
 216   }
 217 }
 218 
 219 #undef ASSERT_PHASE_UNINITIALIZED
 220 
 221 // record the time a phase took in seconds
 222 void G1GCPhaseTimes::record_time_secs(GCParPhases phase, uint worker_i, double secs) {
 223   _gc_par_phases[phase]->set(worker_i, secs);
 224 }
 225 
 226 // add a number of seconds to a phase
 227 void G1GCPhaseTimes::add_time_secs(GCParPhases phase, uint worker_i, double secs) {
 228   _gc_par_phases[phase]->add(worker_i, secs);
 229 }
 230 
 231 void G1GCPhaseTimes::record_or_add_objcopy_time_secs(uint worker_i, double secs) {
 232   if (_gc_par_phases[ObjCopy]->get(worker_i) == _gc_par_phases[ObjCopy]->uninitialized()) {
 233     record_time_secs(ObjCopy, worker_i, secs);
 234   } else {
 235     add_time_secs(ObjCopy, worker_i, secs);
 236   }
 237 }
 238 
 239 void G1GCPhaseTimes::record_thread_work_item(GCParPhases phase, uint worker_i, size_t count, uint index) {
 240   _gc_par_phases[phase]->set_thread_work_item(worker_i, count, index);
 241 }
 242 
 243 // return the average time for a phase in milliseconds
 244 double G1GCPhaseTimes::average_time_ms(GCParPhases phase) {
 245   return _gc_par_phases[phase]->average() * 1000.0;
 246 }
 247 
 248 size_t G1GCPhaseTimes::sum_thread_work_items(GCParPhases phase, uint index) {
 249   assert(_gc_par_phases[phase]->thread_work_items(index) != NULL, "No sub count");
 250   return _gc_par_phases[phase]->thread_work_items(index)->sum();
 251 }
 252 
 253 template <class T>
 254 void G1GCPhaseTimes::details(T* phase, const char* indent) const {
 255   LogTarget(Trace, gc, phases, task) lt;
 256   if (lt.is_enabled()) {
 257     LogStream ls(lt);
 258     ls.print("%s", indent);
 259     phase->print_details_on(&ls);
 260   }
 261 }
 262 
 263 void G1GCPhaseTimes::log_phase(WorkerDataArray<double>* phase, uint indent, outputStream* out, bool print_sum) const {
 264   out->print("%s", Indents[indent]);
 265   phase->print_summary_on(out, print_sum);
 266   details(phase, Indents[indent]);
 267 
 268   for (uint i = 0; i < phase->MaxThreadWorkItems; i++) {
 269     WorkerDataArray<size_t>* work_items = phase->thread_work_items(i);
 270     if (work_items != NULL) {
 271       out->print("%s", Indents[indent + 1]);
 272       work_items->print_summary_on(out, true);
 273       details(work_items, Indents[indent + 1]);
 274     }
 275   }
 276 }
 277 
 278 void G1GCPhaseTimes::debug_phase(WorkerDataArray<double>* phase) const {
 279   LogTarget(Debug, gc, phases) lt;
 280   if (lt.is_enabled()) {
 281     ResourceMark rm;
 282     LogStream ls(lt);
 283     log_phase(phase, 2, &ls, true);
 284   }
 285 }
 286 
 287 void G1GCPhaseTimes::trace_phase(WorkerDataArray<double>* phase, bool print_sum) const {
 288   LogTarget(Trace, gc, phases) lt;
 289   if (lt.is_enabled()) {
 290     LogStream ls(lt);
 291     log_phase(phase, 3, &ls, print_sum);
 292   }
 293 }
 294 
 295 #define TIME_FORMAT "%.1lfms"
 296 
 297 void G1GCPhaseTimes::info_time(const char* name, double value) const {
 298   log_info(gc, phases)("%s%s: " TIME_FORMAT, Indents[1], name, value);
 299 }
 300 
 301 void G1GCPhaseTimes::debug_time(const char* name, double value) const {
 302   log_debug(gc, phases)("%s%s: " TIME_FORMAT, Indents[2], name, value);
 303 }
 304 
 305 void G1GCPhaseTimes::debug_time_for_reference(const char* name, double value) const {
 306   LogTarget(Debug, gc, phases) lt;
 307   LogTarget(Debug, gc, phases, ref) lt2;
 308 
 309   if (lt.is_enabled()) {
 310     LogStream ls(lt);
 311     ls.print_cr("%s%s: " TIME_FORMAT, Indents[2], name, value);
 312   } else if (lt2.is_enabled()) {
 313     LogStream ls(lt2);
 314     ls.print_cr("%s%s: " TIME_FORMAT, Indents[2], name, value);
 315   }
 316 }
 317 
 318 void G1GCPhaseTimes::trace_time(const char* name, double value) const {
 319   log_trace(gc, phases)("%s%s: " TIME_FORMAT, Indents[3], name, value);
 320 }
 321 
 322 void G1GCPhaseTimes::trace_count(const char* name, size_t value) const {
 323   log_trace(gc, phases)("%s%s: " SIZE_FORMAT, Indents[3], name, value);
 324 }
 325 
 326 double G1GCPhaseTimes::print_pre_evacuate_collection_set() const {
 327   const double sum_ms = _root_region_scan_wait_time_ms +
 328                         _recorded_young_cset_choice_time_ms +
 329                         _recorded_non_young_cset_choice_time_ms +
 330                         _cur_fast_reclaim_humongous_register_time_ms +
 331                         _recorded_clear_claimed_marks_time_ms;
 332 
 333   info_time("Pre Evacuate Collection Set", sum_ms);
 334 
 335   if (_root_region_scan_wait_time_ms > 0.0) {
 336     debug_time("Root Region Scan Waiting", _root_region_scan_wait_time_ms);
 337   }
 338   debug_time("Prepare TLABs", _cur_prepare_tlab_time_ms);
 339   debug_time("Choose Collection Set", (_recorded_young_cset_choice_time_ms + _recorded_non_young_cset_choice_time_ms));
 340   if (G1EagerReclaimHumongousObjects) {
 341     debug_time("Humongous Register", _cur_fast_reclaim_humongous_register_time_ms);
 342     trace_count("Humongous Total", _cur_fast_reclaim_humongous_total);
 343     trace_count("Humongous Candidate", _cur_fast_reclaim_humongous_candidates);
 344   }
 345 
 346   if (_recorded_clear_claimed_marks_time_ms > 0.0) {
 347     debug_time("Clear Claimed Marks", _recorded_clear_claimed_marks_time_ms);
 348   }
 349   return sum_ms;
 350 }
 351 
 352 double G1GCPhaseTimes::print_evacuate_collection_set() const {
 353   const double sum_ms = _cur_collection_par_time_ms;
 354 
 355   info_time("Evacuate Collection Set", sum_ms);
 356 
 357   trace_phase(_gc_par_phases[GCWorkerStart], false);
 358   debug_phase(_gc_par_phases[ExtRootScan]);
 359   for (int i = ThreadRoots; i <= SATBFiltering; i++) {
 360     trace_phase(_gc_par_phases[i]);
 361   }
 362   debug_phase(_gc_par_phases[UpdateRS]);
 363   if (G1HotCardCache::default_use_cache()) {
 364     trace_phase(_gc_par_phases[ScanHCC]);
 365   }
 366   debug_phase(_gc_par_phases[ScanRS]);
 367   debug_phase(_gc_par_phases[CodeRoots]);
 368 #if INCLUDE_AOT
 369   debug_phase(_gc_par_phases[AOTCodeRoots]);
 370 #endif
 371   debug_phase(_gc_par_phases[ObjCopy]);
 372   debug_phase(_gc_par_phases[Termination]);
 373   debug_phase(_gc_par_phases[Other]);
 374   debug_phase(_gc_par_phases[GCWorkerTotal]);
 375   trace_phase(_gc_par_phases[GCWorkerEnd], false);
 376 
 377   return sum_ms;
 378 }
 379 
 380 double G1GCPhaseTimes::print_post_evacuate_collection_set() const {
 381   const double evac_fail_handling = _cur_evac_fail_recalc_used +
 382                                     _cur_evac_fail_remove_self_forwards;
 383   const double sum_ms = evac_fail_handling +
 384                         _cur_collection_code_root_fixup_time_ms +
 385                         _recorded_preserve_cm_referents_time_ms +
 386                         _cur_ref_proc_time_ms +
 387                         _cur_weak_ref_proc_time_ms +
 388                         _cur_ref_enq_time_ms +
 389                         _cur_clear_ct_time_ms +
 390                         _recorded_merge_pss_time_ms +
 391                         _cur_strong_code_root_purge_time_ms +
 392                         _recorded_redirty_logged_cards_time_ms +
 393                         _recorded_total_free_cset_time_ms +
 394                         _cur_fast_reclaim_humongous_time_ms +
 395                         _cur_expand_heap_time_ms +
 396                         _cur_string_dedup_fixup_time_ms;
 397 
 398   info_time("Post Evacuate Collection Set", sum_ms);
 399 
 400   debug_time("Code Roots Fixup", _cur_collection_code_root_fixup_time_ms);
 401 
 402   debug_time("Preserve CM Refs", _recorded_preserve_cm_referents_time_ms);
 403   trace_phase(_gc_par_phases[PreserveCMReferents]);
 404 
 405   debug_time_for_reference("Reference Processing", _cur_ref_proc_time_ms);
 406   _ref_phase_times.print_all_references(2, false);
 407 
 408   debug_time("Weak Processing", _cur_weak_ref_proc_time_ms);
 409 
 410   if (G1StringDedup::is_enabled()) {
 411     debug_time("String Dedup Fixup", _cur_string_dedup_fixup_time_ms);
 412     debug_phase(_gc_par_phases[StringDedupQueueFixup]);
 413     debug_phase(_gc_par_phases[StringDedupTableFixup]);
 414   }
 415 
 416   debug_time("Clear Card Table", _cur_clear_ct_time_ms);
 417 
 418   if (G1CollectedHeap::heap()->evacuation_failed()) {
 419     debug_time("Evacuation Failure", evac_fail_handling);
 420     trace_time("Recalculate Used", _cur_evac_fail_recalc_used);
 421     trace_time("Remove Self Forwards",_cur_evac_fail_remove_self_forwards);
 422   }
 423 
 424   debug_time_for_reference("Reference Enqueuing", _cur_ref_enq_time_ms);
 425   _ref_phase_times.print_enqueue_phase(2, false);
 426 
 427   debug_time("Merge Per-Thread State", _recorded_merge_pss_time_ms);
 428   debug_time("Code Roots Purge", _cur_strong_code_root_purge_time_ms);
 429 
 430   debug_time("Redirty Cards", _recorded_redirty_logged_cards_time_ms);
 431   trace_phase(_gc_par_phases[RedirtyCards]);
 432 #if COMPILER2_OR_JVMCI
 433   debug_time("DerivedPointerTable Update", _cur_derived_pointer_table_update_time_ms);
 434 #endif
 435 
 436   debug_time("Free Collection Set", _recorded_total_free_cset_time_ms);
 437   trace_time("Free Collection Set Serial", _recorded_serial_free_cset_time_ms);
 438   trace_phase(_gc_par_phases[YoungFreeCSet]);
 439   trace_phase(_gc_par_phases[NonYoungFreeCSet]);
 440 
 441   if (G1EagerReclaimHumongousObjects) {
 442     debug_time("Humongous Reclaim", _cur_fast_reclaim_humongous_time_ms);
 443     trace_count("Humongous Reclaimed", _cur_fast_reclaim_humongous_reclaimed);
 444   }
 445   debug_time("Start New Collection Set", _recorded_start_new_cset_time_ms);
 446   if (UseTLAB && ResizeTLAB) {
 447     debug_time("Resize TLABs", _cur_resize_tlab_time_ms);
 448   }
 449   debug_time("Expand Heap After Collection", _cur_expand_heap_time_ms);
 450 
 451 
 452   return sum_ms;
 453 }
 454 
 455 void G1GCPhaseTimes::print_other(double accounted_ms) const {
 456   info_time("Other", _gc_pause_time_ms - accounted_ms);
 457 }
 458 
 459 void G1GCPhaseTimes::print() {
 460   note_gc_end();
 461 
 462   if (_cur_verify_before_time_ms > 0.0) {
 463     debug_time("Verify Before", _cur_verify_before_time_ms);
 464   }
 465 
 466   double accounted_ms = 0.0;
 467   accounted_ms += print_pre_evacuate_collection_set();
 468   accounted_ms += print_evacuate_collection_set();
 469   accounted_ms += print_post_evacuate_collection_set();
 470   print_other(accounted_ms);
 471 
 472   if (_cur_verify_after_time_ms > 0.0) {
 473     debug_time("Verify After", _cur_verify_after_time_ms);
 474   }
 475 }
 476 
 477 G1EvacPhaseWithTrimTimeTracker::G1EvacPhaseWithTrimTimeTracker(G1ParScanThreadState* pss, Tickspan& total_time, Tickspan& trim_time) :
 478   _pss(pss),
 479   _start(Ticks::now()),
 480   _total_time(total_time),
 481   _trim_time(trim_time) {
 482 
 483   assert(_pss->trim_ticks().value() == 0, "Possibly remaining trim ticks left over from previous use");
 484 }
 485 
 486 G1EvacPhaseWithTrimTimeTracker::~G1EvacPhaseWithTrimTimeTracker() {
 487   _total_time += (Ticks::now() - _start) - _pss->trim_ticks();
 488   _trim_time += _pss->trim_ticks();
 489   _pss->reset_trim_ticks();
 490 }
 491 
 492 G1GCParPhaseTimesTracker::G1GCParPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1GCPhaseTimes::GCParPhases phase, uint worker_id) :
 493     _phase_times(phase_times), _phase(phase), _worker_id(worker_id) {
 494   if (_phase_times != NULL) {
 495     _start_time = Ticks::now();
 496   }
 497 }
 498 
 499 G1GCParPhaseTimesTracker::~G1GCParPhaseTimesTracker() {
 500   if (_phase_times != NULL) {
 501     _phase_times->record_time_secs(_phase, _worker_id, TicksToTimeHelper::seconds(Ticks::now() - _start_time));
 502   }
 503 }
 504 
 505 G1EvacPhaseTimesTracker::G1EvacPhaseTimesTracker(G1GCPhaseTimes* phase_times,
 506                                                  G1ParScanThreadState* pss,
 507                                                  G1GCPhaseTimes::GCParPhases phase,
 508                                                  uint worker_id) :
 509   G1GCParPhaseTimesTracker(phase_times, phase, worker_id),
 510   _total_time(),
 511   _trim_time(),
 512   _trim_tracker(pss, _total_time, _trim_time) {
 513 }
 514 
 515 G1EvacPhaseTimesTracker::~G1EvacPhaseTimesTracker() {
 516   if (_phase_times != NULL) {
 517     // Exclude trim time by increasing the start time.
 518     _start_time += _trim_time;
 519     _phase_times->record_or_add_objcopy_time_secs(_worker_id, TicksToTimeHelper::seconds(_trim_time));
 520   }
 521 }
 522 
--- EOF ---