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 #endif

    39 

    40 // All GC dependencies against the trace framework is contained within this file.

    41 

    42 typedef uintptr_t TraceAddress;

    43 

    44 void GCTracer::send_garbage_collection_event() const {

    45   EventGCGarbageCollection event(UNTIMED);

    46   if (event.should_commit()) {

    47     event.set_gcId(_shared_gc_info.gc_id().id());

    48     event.set_name(_shared_gc_info.name());

    49     event.set_cause((u2) _shared_gc_info.cause());

    50     event.set_sumOfPauses(_shared_gc_info.sum_of_pauses());

    51     event.set_longestPause(_shared_gc_info.longest_pause());

    52     event.set_starttime(_shared_gc_info.start_timestamp());

    53     event.set_endtime(_shared_gc_info.end_timestamp());

    54     event.commit();

    55   }

    56 }

    57 

    58 void GCTracer::send_reference_stats_event(ReferenceType type, size_t count) const {

    59   EventGCReferenceStatistics e;

    60   if (e.should_commit()) {

    61       e.set_gcId(_shared_gc_info.gc_id().id());

    62       e.set_type((u1)type);

    63       e.set_count(count);

    64       e.commit();

    65   }

    66 }

    67 

    68 void GCTracer::send_metaspace_chunk_free_list_summary(GCWhen::Type when, Metaspace::MetadataType mdtype,

    69                                                       const MetaspaceChunkFreeListSummary& summary) const {

    70   EventMetaspaceChunkFreeListSummary e;

    71   if (e.should_commit()) {

    72     e.set_gcId(_shared_gc_info.gc_id().id());

    73     e.set_when(when);

    74     e.set_metadataType(mdtype);

    75 

    76     e.set_specializedChunks(summary.num_specialized_chunks());

    77     e.set_specializedChunksTotalSize(summary.specialized_chunks_size_in_bytes());

    78 

    79     e.set_smallChunks(summary.num_small_chunks());

    80     e.set_smallChunksTotalSize(summary.small_chunks_size_in_bytes());

    81 

    82     e.set_mediumChunks(summary.num_medium_chunks());

    83     e.set_mediumChunksTotalSize(summary.medium_chunks_size_in_bytes());

    84 

    85     e.set_humongousChunks(summary.num_humongous_chunks());

    86     e.set_humongousChunksTotalSize(summary.humongous_chunks_size_in_bytes());

    87 

    88     e.commit();

    89   }

    90 }

    91 

    92 void ParallelOldTracer::send_parallel_old_event() const {

    93   EventGCParallelOld e(UNTIMED);

    94   if (e.should_commit()) {

    95     e.set_gcId(_shared_gc_info.gc_id().id());

    96     e.set_densePrefix((TraceAddress)_parallel_old_gc_info.dense_prefix());

    97     e.set_starttime(_shared_gc_info.start_timestamp());

    98     e.set_endtime(_shared_gc_info.end_timestamp());

    99     e.commit();

   100   }

   101 }

   102 

   103 void YoungGCTracer::send_young_gc_event() const {

   104   EventGCYoungGarbageCollection e(UNTIMED);

   105   if (e.should_commit()) {

   106     e.set_gcId(_shared_gc_info.gc_id().id());

   107     e.set_tenuringThreshold(_tenuring_threshold);

   108     e.set_starttime(_shared_gc_info.start_timestamp());

   109     e.set_endtime(_shared_gc_info.end_timestamp());

   110     e.commit();

   111   }

   112 }

   113 

   114 bool YoungGCTracer::should_send_promotion_in_new_plab_event() const {

   115   return EventPromoteObjectInNewPLAB::is_enabled();

   116 }

   117 

   118 bool YoungGCTracer::should_send_promotion_outside_plab_event() const {

   119   return EventPromoteObjectOutsidePLAB::is_enabled();

   120 }

   121 

   122 void YoungGCTracer::send_promotion_in_new_plab_event(Klass* klass, size_t obj_size,

   123                                                      uint age, bool tenured,

   124                                                      size_t plab_size) const {

   125 

   126   EventPromoteObjectInNewPLAB event;

   127   if (event.should_commit()) {

   128     event.set_gcId(_shared_gc_info.gc_id().id());

   129     event.set_class(klass);

   130     event.set_objectSize(obj_size);

   131     event.set_tenured(tenured);

   132     event.set_tenuringAge(age);

   133     event.set_plabSize(plab_size);

   134     event.commit();

   135   }

   136 }

   137 

   138 void YoungGCTracer::send_promotion_outside_plab_event(Klass* klass, size_t obj_size,

   139                                                       uint age, bool tenured) const {

   140 

   141   EventPromoteObjectOutsidePLAB event;

   142   if (event.should_commit()) {

   143     event.set_gcId(_shared_gc_info.gc_id().id());

   144     event.set_class(klass);

   145     event.set_objectSize(obj_size);

   146     event.set_tenured(tenured);

   147     event.set_tenuringAge(age);

   148     event.commit();

   149   }

   150 }

   151 

   152 void OldGCTracer::send_old_gc_event() const {

   153   EventGCOldGarbageCollection e(UNTIMED);

   154   if (e.should_commit()) {

   155     e.set_gcId(_shared_gc_info.gc_id().id());

   156     e.set_starttime(_shared_gc_info.start_timestamp());

   157     e.set_endtime(_shared_gc_info.end_timestamp());

   158     e.commit();

   159   }

   160 }

   161 

   162 static TraceStructCopyFailed to_trace_struct(const CopyFailedInfo& cf_info) {

   163   TraceStructCopyFailed failed_info;

   164   failed_info.set_objectCount(cf_info.failed_count());

   165   failed_info.set_firstSize(cf_info.first_size());

   166   failed_info.set_smallestSize(cf_info.smallest_size());

   167   failed_info.set_totalSize(cf_info.total_size());

   168   return failed_info;

   169 }

   170 

   171 void YoungGCTracer::send_promotion_failed_event(const PromotionFailedInfo& pf_info) const {

   172   EventPromotionFailed e;

   173   if (e.should_commit()) {

   174     e.set_gcId(_shared_gc_info.gc_id().id());

   175     e.set_data(to_trace_struct(pf_info));

   176     e.set_thread(pf_info.thread()->thread_id());

   177     e.commit();

   178   }

   179 }

   180 

   181 // Common to CMS and G1

   182 void OldGCTracer::send_concurrent_mode_failure_event() {

   183   EventConcurrentModeFailure e;

   184   if (e.should_commit()) {

   185     e.set_gcId(_shared_gc_info.gc_id().id());

   186     e.commit();

   187   }

   188 }

   189 

   190 #if INCLUDE_ALL_GCS

   191 void G1NewTracer::send_g1_young_gc_event() {

   192   EventGCG1GarbageCollection e(UNTIMED);

   193   if (e.should_commit()) {

   194     e.set_gcId(_shared_gc_info.gc_id().id());

   195     e.set_type(_g1_young_gc_info.type());

   196     e.set_starttime(_shared_gc_info.start_timestamp());

   197     e.set_endtime(_shared_gc_info.end_timestamp());

   198     e.commit();

   199   }

   200 }

   201 

   202 void G1NewTracer::send_evacuation_info_event(EvacuationInfo* info) {

   203   EventEvacuationInfo e;

   204   if (e.should_commit()) {

   205     e.set_gcId(_shared_gc_info.gc_id().id());

   206     e.set_cSetRegions(info->collectionset_regions());

   207     e.set_cSetUsedBefore(info->collectionset_used_before());

   208     e.set_cSetUsedAfter(info->collectionset_used_after());

   209     e.set_allocationRegions(info->allocation_regions());

   210     e.set_allocRegionsUsedBefore(info->alloc_regions_used_before());

   211     e.set_allocRegionsUsedAfter(info->alloc_regions_used_before() + info->bytes_copied());

   212     e.set_bytesCopied(info->bytes_copied());

   213     e.set_regionsFreed(info->regions_freed());

   214     e.commit();

   215   }

   216 }

   217 

   218 void G1NewTracer::send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const {

   219   EventEvacuationFailed e;

   220   if (e.should_commit()) {

   221     e.set_gcId(_shared_gc_info.gc_id().id());

   222     e.set_data(to_trace_struct(ef_info));

   223     e.commit();

   224   }

   225 }

   226 #endif

   227 

   228 static TraceStructVirtualSpace to_trace_struct(const VirtualSpaceSummary& summary) {

   229   TraceStructVirtualSpace space;

   230   space.set_start((TraceAddress)summary.start());

   231   space.set_committedEnd((TraceAddress)summary.committed_end());

   232   space.set_committedSize(summary.committed_size());

   233   space.set_reservedEnd((TraceAddress)summary.reserved_end());

   234   space.set_reservedSize(summary.reserved_size());

   235   return space;

   236 }

   237 

   238 static TraceStructObjectSpace to_trace_struct(const SpaceSummary& summary) {

   239   TraceStructObjectSpace space;

   240   space.set_start((TraceAddress)summary.start());

   241   space.set_end((TraceAddress)summary.end());

   242   space.set_used(summary.used());

   243   space.set_size(summary.size());

   244   return space;

   245 }

   246 

   247 class GCHeapSummaryEventSender : public GCHeapSummaryVisitor {

   248   GCId _gc_id;

   249   GCWhen::Type _when;

   250  public:

   251   GCHeapSummaryEventSender(GCId gc_id, GCWhen::Type when) : _gc_id(gc_id), _when(when) {}

   252 

   253   void visit(const GCHeapSummary* heap_summary) const {

   254     const VirtualSpaceSummary& heap_space = heap_summary->heap();

   255 

   256     EventGCHeapSummary e;

   257     if (e.should_commit()) {

   258       e.set_gcId(_gc_id.id());

   259       e.set_when((u1)_when);

   260       e.set_heapSpace(to_trace_struct(heap_space));

   261       e.set_heapUsed(heap_summary->used());

   262       e.commit();

   263     }

   264   }

   265 

   266   void visit(const PSHeapSummary* ps_heap_summary) const {

   267     visit((GCHeapSummary*)ps_heap_summary);

   268 

   269     const VirtualSpaceSummary& old_summary = ps_heap_summary->old();

   270     const SpaceSummary& old_space = ps_heap_summary->old_space();

   271     const VirtualSpaceSummary& young_summary = ps_heap_summary->young();

   272     const SpaceSummary& eden_space = ps_heap_summary->eden();

   273     const SpaceSummary& from_space = ps_heap_summary->from();

   274     const SpaceSummary& to_space = ps_heap_summary->to();

   275 

   276     EventPSHeapSummary e;

   277     if (e.should_commit()) {

   278       e.set_gcId(_gc_id.id());

   279       e.set_when((u1)_when);

   280 

   281       e.set_oldSpace(to_trace_struct(ps_heap_summary->old()));

   282       e.set_oldObjectSpace(to_trace_struct(ps_heap_summary->old_space()));

   283       e.set_youngSpace(to_trace_struct(ps_heap_summary->young()));

   284       e.set_edenSpace(to_trace_struct(ps_heap_summary->eden()));

   285       e.set_fromSpace(to_trace_struct(ps_heap_summary->from()));

   286       e.set_toSpace(to_trace_struct(ps_heap_summary->to()));

   287       e.commit();

   288     }

   289   }

   290 };

   291 

   292 void GCTracer::send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const {

   293   GCHeapSummaryEventSender visitor(_shared_gc_info.gc_id(), when);

   294   heap_summary.accept(&visitor);

   295 }

   296 

   297 static TraceStructMetaspaceSizes to_trace_struct(const MetaspaceSizes& sizes) {

   298   TraceStructMetaspaceSizes meta_sizes;

   299 

   300   meta_sizes.set_committed(sizes.committed());

   301   meta_sizes.set_used(sizes.used());

   302   meta_sizes.set_reserved(sizes.reserved());

   303 

   304   return meta_sizes;

   305 }

   306 

   307 void GCTracer::send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const {

   308   EventMetaspaceSummary e;

   309   if (e.should_commit()) {

   310     e.set_gcId(_shared_gc_info.gc_id().id());

   311     e.set_when((u1) when);

   312     e.set_gcThreshold(meta_space_summary.capacity_until_GC());

   313     e.set_metaspace(to_trace_struct(meta_space_summary.meta_space()));

   314     e.set_dataSpace(to_trace_struct(meta_space_summary.data_space()));

   315     e.set_classSpace(to_trace_struct(meta_space_summary.class_space()));

   316     e.commit();

   317   }

   318 }

   319 

   320 class PhaseSender : public PhaseVisitor {

   321   GCId _gc_id;

   322  public:

   323   PhaseSender(GCId gc_id) : _gc_id(gc_id) {}

   324 

   325   template<typename T>

   326   void send_phase(PausePhase* pause) {

   327     T event(UNTIMED);

   328     if (event.should_commit()) {

   329       event.set_gcId(_gc_id.id());

   330       event.set_name(pause->name());

   331       event.set_starttime(pause->start());

   332       event.set_endtime(pause->end());

   333       event.commit();

   334     }

   335   }

   336 

   337   void visit(GCPhase* pause) { ShouldNotReachHere(); }

   338   void visit(ConcurrentPhase* pause) { Unimplemented(); }

   339   void visit(PausePhase* pause) {

   340     assert(PhasesStack::PHASE_LEVELS == 5, "Need more event types");

   341 

   342     switch (pause->level()) {

   343       case 0: send_phase<EventGCPhasePause>(pause); break;

   344       case 1: send_phase<EventGCPhasePauseLevel1>(pause); break;

   345       case 2: send_phase<EventGCPhasePauseLevel2>(pause); break;

   346       case 3: send_phase<EventGCPhasePauseLevel3>(pause); break;

   347       default: /* Ignore sending this phase */ break;

   348     }

   349   }

   350 };

   351 

   352 void GCTracer::send_phase_events(TimePartitions* time_partitions) const {

   353   PhaseSender phase_reporter(_shared_gc_info.gc_id());

   354 

   355   TimePartitionPhasesIterator iter(time_partitions);

   356   while (iter.has_next()) {

   357     GCPhase* phase = iter.next();

   358     phase->accept(&phase_reporter);

   359   }

   360 }