1 /*
   2  * Copyright (c) 2012, 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 #include "precompiled.hpp"
  26 #include "gc/shared/copyFailedInfo.hpp"
  27 #include "gc/shared/gcHeapSummary.hpp"
  28 #include "gc/shared/gcTimer.hpp"
  29 #include "gc/shared/gcTrace.hpp"
  30 #include "gc/shared/gcWhen.hpp"
  31 #include "runtime/os.hpp"
  32 #include "trace/traceBackend.hpp"
  33 #include "trace/tracing.hpp"
  34 #include "utilities/macros.hpp"
  35 #if INCLUDE_ALL_GCS
  36 #include "gc/g1/evacuationInfo.hpp"
  37 #include "gc/g1/g1YCTypes.hpp"
  38 #include "tracefiles/traceEventClasses.hpp"
  39 #endif
  40 
  41 // All GC dependencies against the trace framework is contained within this file.
  42 
  43 typedef uintptr_t TraceAddress;
  44 
  45 void GCTracer::send_garbage_collection_event() const {
  46   EventGCGarbageCollection event(UNTIMED);
  47   if (event.should_commit()) {
  48     event.set_gcId(GCId::current());
  49     event.set_name(_shared_gc_info.name());
  50     event.set_cause((u2) _shared_gc_info.cause());
  51     event.set_sumOfPauses(_shared_gc_info.sum_of_pauses());
  52     event.set_longestPause(_shared_gc_info.longest_pause());
  53     event.set_starttime(_shared_gc_info.start_timestamp());
  54     event.set_endtime(_shared_gc_info.end_timestamp());
  55     event.commit();
  56   }
  57 }
  58 
  59 void GCTracer::send_reference_stats_event(ReferenceType type, size_t count) const {
  60   EventGCReferenceStatistics e;
  61   if (e.should_commit()) {
  62       e.set_gcId(GCId::current());
  63       e.set_type((u1)type);
  64       e.set_count(count);
  65       e.commit();
  66   }
  67 }
  68 
  69 void GCTracer::send_metaspace_chunk_free_list_summary(GCWhen::Type when, Metaspace::MetadataType mdtype,
  70                                                       const MetaspaceChunkFreeListSummary& summary) const {
  71   EventMetaspaceChunkFreeListSummary e;
  72   if (e.should_commit()) {
  73     e.set_gcId(GCId::current());
  74     e.set_when(when);
  75     e.set_metadataType(mdtype);
  76 
  77     e.set_specializedChunks(summary.num_specialized_chunks());
  78     e.set_specializedChunksTotalSize(summary.specialized_chunks_size_in_bytes());
  79 
  80     e.set_smallChunks(summary.num_small_chunks());
  81     e.set_smallChunksTotalSize(summary.small_chunks_size_in_bytes());
  82 
  83     e.set_mediumChunks(summary.num_medium_chunks());
  84     e.set_mediumChunksTotalSize(summary.medium_chunks_size_in_bytes());
  85 
  86     e.set_humongousChunks(summary.num_humongous_chunks());
  87     e.set_humongousChunksTotalSize(summary.humongous_chunks_size_in_bytes());
  88 
  89     e.commit();
  90   }
  91 }
  92 
  93 void ParallelOldTracer::send_parallel_old_event() const {
  94   EventGCParallelOld e(UNTIMED);
  95   if (e.should_commit()) {
  96     e.set_gcId(GCId::current());
  97     e.set_densePrefix((TraceAddress)_parallel_old_gc_info.dense_prefix());
  98     e.set_starttime(_shared_gc_info.start_timestamp());
  99     e.set_endtime(_shared_gc_info.end_timestamp());
 100     e.commit();
 101   }
 102 }
 103 
 104 void YoungGCTracer::send_young_gc_event() const {
 105   EventGCYoungGarbageCollection e(UNTIMED);
 106   if (e.should_commit()) {
 107     e.set_gcId(GCId::current());
 108     e.set_tenuringThreshold(_tenuring_threshold);
 109     e.set_starttime(_shared_gc_info.start_timestamp());
 110     e.set_endtime(_shared_gc_info.end_timestamp());
 111     e.commit();
 112   }
 113 }
 114 
 115 bool YoungGCTracer::should_send_promotion_in_new_plab_event() const {
 116   return EventPromoteObjectInNewPLAB::is_enabled();
 117 }
 118 
 119 bool YoungGCTracer::should_send_promotion_outside_plab_event() const {
 120   return EventPromoteObjectOutsidePLAB::is_enabled();
 121 }
 122 
 123 void YoungGCTracer::send_promotion_in_new_plab_event(Klass* klass, size_t obj_size,
 124                                                      uint age, bool tenured,
 125                                                      size_t plab_size) const {
 126 
 127   EventPromoteObjectInNewPLAB event;
 128   if (event.should_commit()) {
 129     event.set_gcId(GCId::current());
 130     event.set_class(klass);
 131     event.set_objectSize(obj_size);
 132     event.set_tenured(tenured);
 133     event.set_tenuringAge(age);
 134     event.set_plabSize(plab_size);
 135     event.commit();
 136   }
 137 }
 138 
 139 void YoungGCTracer::send_promotion_outside_plab_event(Klass* klass, size_t obj_size,
 140                                                       uint age, bool tenured) const {
 141 
 142   EventPromoteObjectOutsidePLAB event;
 143   if (event.should_commit()) {
 144     event.set_gcId(GCId::current());
 145     event.set_class(klass);
 146     event.set_objectSize(obj_size);
 147     event.set_tenured(tenured);
 148     event.set_tenuringAge(age);
 149     event.commit();
 150   }
 151 }
 152 
 153 void OldGCTracer::send_old_gc_event() const {
 154   EventGCOldGarbageCollection e(UNTIMED);
 155   if (e.should_commit()) {
 156     e.set_gcId(GCId::current());
 157     e.set_starttime(_shared_gc_info.start_timestamp());
 158     e.set_endtime(_shared_gc_info.end_timestamp());
 159     e.commit();
 160   }
 161 }
 162 
 163 static TraceStructCopyFailed to_trace_struct(const CopyFailedInfo& cf_info) {
 164   TraceStructCopyFailed failed_info;
 165   failed_info.set_objectCount(cf_info.failed_count());
 166   failed_info.set_firstSize(cf_info.first_size());
 167   failed_info.set_smallestSize(cf_info.smallest_size());
 168   failed_info.set_totalSize(cf_info.total_size());
 169   return failed_info;
 170 }
 171 
 172 void YoungGCTracer::send_promotion_failed_event(const PromotionFailedInfo& pf_info) const {
 173   EventPromotionFailed e;
 174   if (e.should_commit()) {
 175     e.set_gcId(GCId::current());
 176     e.set_data(to_trace_struct(pf_info));
 177     e.set_thread(pf_info.thread()->thread_id());
 178     e.commit();
 179   }
 180 }
 181 
 182 // Common to CMS and G1
 183 void OldGCTracer::send_concurrent_mode_failure_event() {
 184   EventConcurrentModeFailure e;
 185   if (e.should_commit()) {
 186     e.set_gcId(GCId::current());
 187     e.commit();
 188   }
 189 }
 190 
 191 #if INCLUDE_ALL_GCS
 192 void G1NewTracer::send_g1_young_gc_event() {
 193   EventGCG1GarbageCollection e(UNTIMED);
 194   if (e.should_commit()) {
 195     e.set_gcId(GCId::current());
 196     e.set_type(_g1_young_gc_info.type());
 197     e.set_starttime(_shared_gc_info.start_timestamp());
 198     e.set_endtime(_shared_gc_info.end_timestamp());
 199     e.commit();
 200   }
 201 }
 202 
 203 void G1MMUTracer::send_g1_mmu_event(double timeSlice, double gcTime, double maxTime) {
 204   EventGCG1MMU e;
 205   if (e.should_commit()) {
 206     e.set_gcId(GCId::current());
 207     e.set_timeSlice(timeSlice);
 208     e.set_gcTime(gcTime);
 209     e.set_maxGcTime(maxTime);
 210     e.commit();
 211   }
 212 }
 213 
 214 void G1NewTracer::send_evacuation_info_event(EvacuationInfo* info) {
 215   EventEvacuationInfo e;
 216   if (e.should_commit()) {
 217     e.set_gcId(GCId::current());
 218     e.set_cSetRegions(info->collectionset_regions());
 219     e.set_cSetUsedBefore(info->collectionset_used_before());
 220     e.set_cSetUsedAfter(info->collectionset_used_after());
 221     e.set_allocationRegions(info->allocation_regions());
 222     e.set_allocRegionsUsedBefore(info->alloc_regions_used_before());
 223     e.set_allocRegionsUsedAfter(info->alloc_regions_used_before() + info->bytes_copied());
 224     e.set_bytesCopied(info->bytes_copied());
 225     e.set_regionsFreed(info->regions_freed());
 226     e.commit();
 227   }
 228 }
 229 
 230 void G1NewTracer::send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const {
 231   EventEvacuationFailed e;
 232   if (e.should_commit()) {
 233     e.set_gcId(GCId::current());
 234     e.set_data(to_trace_struct(ef_info));
 235     e.commit();
 236   }
 237 }
 238 
 239 static TraceStructG1EvacStats create_g1_evacstats(unsigned gcid, const G1EvacSummary& summary) {
 240   TraceStructG1EvacStats s;
 241   s.set_gcId(gcid);
 242   s.set_allocated(summary.allocated() * HeapWordSize);
 243   s.set_wasted(summary.wasted() * HeapWordSize);
 244   s.set_used(summary.used() * HeapWordSize);
 245   s.set_undoWaste(summary.undo_wasted() * HeapWordSize);
 246   s.set_regionEndWaste(summary.region_end_waste() * HeapWordSize);
 247   s.set_regionsRefilled(summary.regions_filled());
 248   s.set_directAllocated(summary.direct_allocated() * HeapWordSize);
 249   s.set_failureUsed(summary.failure_used() * HeapWordSize);
 250   s.set_failureWaste(summary.failure_waste() * HeapWordSize);
 251   return s;
 252 }
 253 
 254 void G1NewTracer::send_young_evacuation_statistics(const G1EvacSummary& summary) const {
 255   EventGCG1EvacuationYoungStatistics surv_evt;
 256   if (surv_evt.should_commit()) {
 257     surv_evt.set_stats(create_g1_evacstats(GCId::current(), summary));
 258     surv_evt.commit();
 259   }
 260 }
 261 
 262 void G1NewTracer::send_old_evacuation_statistics(const G1EvacSummary& summary) const {
 263   EventGCG1EvacuationOldStatistics old_evt;
 264   if (old_evt.should_commit()) {
 265     old_evt.set_stats(create_g1_evacstats(GCId::current(), summary));
 266     old_evt.commit();
 267   }
 268 }
 269 
 270 void G1NewTracer::send_basic_ihop_statistics(size_t threshold,
 271                                              size_t target_occupancy,
 272                                              size_t current_occupancy,
 273                                              size_t last_allocation_size,
 274                                              double last_allocation_duration,
 275                                              double last_marking_length) {
 276   EventGCG1BasicIHOP evt;
 277   if (evt.should_commit()) {
 278     evt.set_gcId(GCId::current());
 279     evt.set_threshold(threshold);
 280     evt.set_targetOccupancy(target_occupancy);
 281     evt.set_thresholdPercentage(target_occupancy > 0 ? threshold * 100.0 / target_occupancy : 0.0);
 282     evt.set_currentOccupancy(current_occupancy);
 283     evt.set_lastAllocationSize(last_allocation_size);
 284     evt.set_lastAllocationDuration(last_allocation_duration);
 285     evt.set_lastAllocationRate(last_allocation_duration != 0.0 ? last_allocation_size / last_allocation_duration : 0.0);
 286     evt.set_lastMarkingLength(last_marking_length);
 287     evt.commit();
 288   }
 289 }
 290 
 291 void G1NewTracer::send_adaptive_ihop_statistics(size_t additional_buffer_size,
 292                                                 double predicted_allocation_rate,
 293                                                 double predicted_marking_length,
 294                                                 bool prediction_active) {
 295   EventGCG1AdaptiveIHOP evt;
 296   if (evt.should_commit()) {
 297     evt.set_gcId(GCId::current());
 298     evt.set_additionalBufferSize(additional_buffer_size);
 299     evt.set_predictedAllocationRate(predicted_allocation_rate);
 300     evt.set_predictedMarkingLength(predicted_marking_length);
 301     evt.set_predictionActive(prediction_active);
 302     evt.commit();
 303   }
 304 }
 305 
 306 #endif
 307 
 308 static TraceStructVirtualSpace to_trace_struct(const VirtualSpaceSummary& summary) {
 309   TraceStructVirtualSpace space;
 310   space.set_start((TraceAddress)summary.start());
 311   space.set_committedEnd((TraceAddress)summary.committed_end());
 312   space.set_committedSize(summary.committed_size());
 313   space.set_reservedEnd((TraceAddress)summary.reserved_end());
 314   space.set_reservedSize(summary.reserved_size());
 315   return space;
 316 }
 317 
 318 static TraceStructObjectSpace to_trace_struct(const SpaceSummary& summary) {
 319   TraceStructObjectSpace space;
 320   space.set_start((TraceAddress)summary.start());
 321   space.set_end((TraceAddress)summary.end());
 322   space.set_used(summary.used());
 323   space.set_size(summary.size());
 324   return space;
 325 }
 326 
 327 class GCHeapSummaryEventSender : public GCHeapSummaryVisitor {
 328   GCWhen::Type _when;
 329  public:
 330   GCHeapSummaryEventSender(GCWhen::Type when) : _when(when) {}
 331 
 332   void visit(const GCHeapSummary* heap_summary) const {
 333     const VirtualSpaceSummary& heap_space = heap_summary->heap();
 334 
 335     EventGCHeapSummary e;
 336     if (e.should_commit()) {
 337       e.set_gcId(GCId::current());
 338       e.set_when((u1)_when);
 339       e.set_heapSpace(to_trace_struct(heap_space));
 340       e.set_heapUsed(heap_summary->used());
 341       e.commit();
 342     }
 343   }
 344 
 345   void visit(const G1HeapSummary* g1_heap_summary) const {
 346     visit((GCHeapSummary*)g1_heap_summary);
 347 
 348     EventG1HeapSummary e;
 349     if (e.should_commit()) {
 350       e.set_gcId(GCId::current());
 351       e.set_when((u1)_when);
 352       e.set_edenUsedSize(g1_heap_summary->edenUsed());
 353       e.set_edenTotalSize(g1_heap_summary->edenCapacity());
 354       e.set_survivorUsedSize(g1_heap_summary->survivorUsed());
 355       e.commit();
 356     }
 357   }
 358 
 359   void visit(const PSHeapSummary* ps_heap_summary) const {
 360     visit((GCHeapSummary*)ps_heap_summary);
 361 
 362     const VirtualSpaceSummary& old_summary = ps_heap_summary->old();
 363     const SpaceSummary& old_space = ps_heap_summary->old_space();
 364     const VirtualSpaceSummary& young_summary = ps_heap_summary->young();
 365     const SpaceSummary& eden_space = ps_heap_summary->eden();
 366     const SpaceSummary& from_space = ps_heap_summary->from();
 367     const SpaceSummary& to_space = ps_heap_summary->to();
 368 
 369     EventPSHeapSummary e;
 370     if (e.should_commit()) {
 371       e.set_gcId(GCId::current());
 372       e.set_when((u1)_when);
 373 
 374       e.set_oldSpace(to_trace_struct(ps_heap_summary->old()));
 375       e.set_oldObjectSpace(to_trace_struct(ps_heap_summary->old_space()));
 376       e.set_youngSpace(to_trace_struct(ps_heap_summary->young()));
 377       e.set_edenSpace(to_trace_struct(ps_heap_summary->eden()));
 378       e.set_fromSpace(to_trace_struct(ps_heap_summary->from()));
 379       e.set_toSpace(to_trace_struct(ps_heap_summary->to()));
 380       e.commit();
 381     }
 382   }
 383 };
 384 
 385 void GCTracer::send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const {
 386   GCHeapSummaryEventSender visitor(when);
 387   heap_summary.accept(&visitor);
 388 }
 389 
 390 static TraceStructMetaspaceSizes to_trace_struct(const MetaspaceSizes& sizes) {
 391   TraceStructMetaspaceSizes meta_sizes;
 392 
 393   meta_sizes.set_committed(sizes.committed());
 394   meta_sizes.set_used(sizes.used());
 395   meta_sizes.set_reserved(sizes.reserved());
 396 
 397   return meta_sizes;
 398 }
 399 
 400 void GCTracer::send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const {
 401   EventMetaspaceSummary e;
 402   if (e.should_commit()) {
 403     e.set_gcId(GCId::current());
 404     e.set_when((u1) when);
 405     e.set_gcThreshold(meta_space_summary.capacity_until_GC());
 406     e.set_metaspace(to_trace_struct(meta_space_summary.meta_space()));
 407     e.set_dataSpace(to_trace_struct(meta_space_summary.data_space()));
 408     e.set_classSpace(to_trace_struct(meta_space_summary.class_space()));
 409     e.commit();
 410   }
 411 }
 412 
 413 class PhaseSender : public PhaseVisitor {
 414  public:
 415   template<typename T>
 416   void send_phase(PausePhase* pause) {
 417     T event(UNTIMED);
 418     if (event.should_commit()) {
 419       event.set_gcId(GCId::current());
 420       event.set_name(pause->name());
 421       event.set_starttime(pause->start());
 422       event.set_endtime(pause->end());
 423       event.commit();
 424     }
 425   }
 426 
 427   void visit(GCPhase* pause) { ShouldNotReachHere(); }
 428   void visit(ConcurrentPhase* pause) { Unimplemented(); }
 429   void visit(PausePhase* pause) {
 430     assert(PhasesStack::PHASE_LEVELS == 5, "Need more event types");
 431 
 432     switch (pause->level()) {
 433       case 0: send_phase<EventGCPhasePause>(pause); break;
 434       case 1: send_phase<EventGCPhasePauseLevel1>(pause); break;
 435       case 2: send_phase<EventGCPhasePauseLevel2>(pause); break;
 436       case 3: send_phase<EventGCPhasePauseLevel3>(pause); break;
 437       default: /* Ignore sending this phase */ break;
 438     }
 439   }
 440 };
 441 
 442 void GCTracer::send_phase_events(TimePartitions* time_partitions) const {
 443   PhaseSender phase_reporter;
 444 
 445   TimePartitionPhasesIterator iter(time_partitions);
 446   while (iter.has_next()) {
 447     GCPhase* phase = iter.next();
 448     phase->accept(&phase_reporter);
 449   }
 450 }