Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  *

  */

 #include "precompiled.hpp"

 #include "gc_implementation/shared/copyFailedInfo.hpp"

 #include "gc_implementation/shared/gcHeapSummary.hpp"

 #include "gc_implementation/shared/gcTimer.hpp"

 #include "gc_implementation/shared/gcTrace.hpp"

 #include "gc_implementation/shared/objectCountEventSender.hpp"

 #include "memory/heapInspection.hpp"

 #include "memory/referenceProcessorStats.hpp"

 #include "runtime/os.hpp"

 #include "utilities/globalDefinitions.hpp"

 #include "utilities/ticks.inline.hpp"

 #if INCLUDE_ALL_GCS

 #include "gc_implementation/g1/evacuationInfo.hpp"

 #endif

 #define assert_unset_gc_id() assert(_shared_gc_info.id() == SharedGCInfo::UNSET_GCID, "GC already started?")

 #define assert_set_gc_id() assert(_shared_gc_info.id() != SharedGCInfo::UNSET_GCID, "GC not started?")

 static GCId GCTracer_next_gc_id = 0;

 static GCId create_new_gc_id() {

   return GCTracer_next_gc_id++;

 }

 void GCTracer::report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp) {

   assert_unset_gc_id();

   GCId gc_id = create_new_gc_id();

   _shared_gc_info.set_id(gc_id);

   _shared_gc_info.set_cause(cause);

   _shared_gc_info.set_start_timestamp(timestamp);

 }

 void GCTracer::report_gc_start(GCCause::Cause cause, const Ticks& timestamp) {

   assert_unset_gc_id();

   report_gc_start_impl(cause, timestamp);

 }

 bool GCTracer::has_reported_gc_start() const {

   return _shared_gc_info.id() != SharedGCInfo::UNSET_GCID;

 }

 void GCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {

   assert_set_gc_id();

   _shared_gc_info.set_sum_of_pauses(time_partitions->sum_of_pauses());

   _shared_gc_info.set_longest_pause(time_partitions->longest_pause());

   _shared_gc_info.set_end_timestamp(timestamp);

   send_phase_events(time_partitions);

   send_garbage_collection_event();

 }

 void GCTracer::report_gc_end(const Ticks& timestamp, TimePartitions* time_partitions) {

   assert_set_gc_id();

   report_gc_end_impl(timestamp, time_partitions);

   _shared_gc_info.set_id(SharedGCInfo::UNSET_GCID);

 }

 void GCTracer::report_gc_reference_stats(const ReferenceProcessorStats& rps) const {

   assert_set_gc_id();

   send_reference_stats_event(REF_SOFT, rps.soft_count());

   send_reference_stats_event(REF_WEAK, rps.weak_count());

   send_reference_stats_event(REF_FINAL, rps.final_count());

   send_reference_stats_event(REF_PHANTOM, rps.phantom_count());

 }

 #if INCLUDE_SERVICES

 class ObjectCountEventSenderClosure : public KlassInfoClosure {

   const GCId _gc_id;

   const double _size_threshold_percentage;

   const size_t _total_size_in_words;

   const Ticks _timestamp;

  public:

   ObjectCountEventSenderClosure(GCId gc_id, size_t total_size_in_words, const Ticks& timestamp) :

     _gc_id(gc_id),

     _size_threshold_percentage(ObjectCountCutOffPercent / 100),

     _total_size_in_words(total_size_in_words),

     _timestamp(timestamp)

   {}

   virtual void do_cinfo(KlassInfoEntry* entry) {

     if (should_send_event(entry)) {

       ObjectCountEventSender::send(entry, _gc_id, _timestamp);

     }

   }

  private:

   bool should_send_event(const KlassInfoEntry* entry) const {

     double percentage_of_heap = ((double) entry->words()) / _total_size_in_words;

     return percentage_of_heap >= _size_threshold_percentage;

   }

 };

 void GCTracer::report_object_count_after_gc(BoolObjectClosure* is_alive_cl) {

   assert_set_gc_id();

   assert(is_alive_cl != NULL, "Must supply function to check liveness");

   if (ObjectCountEventSender::should_send_event()) {

     ResourceMark rm;

     KlassInfoTable cit(false);

     if (!cit.allocation_failed()) {

       HeapInspection hi(false, false, false, NULL);

       hi.populate_table(&cit, is_alive_cl);

       ObjectCountEventSenderClosure event_sender(_shared_gc_info.id(), cit.size_of_instances_in_words(), Ticks::now());

       cit.iterate(&event_sender);

     }

   }

 }

 #endif // INCLUDE_SERVICES

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

   assert_set_gc_id();

   send_gc_heap_summary_event(when, heap_summary);

 }

 void GCTracer::report_metaspace_summary(GCWhen::Type when, const MetaspaceSummary& summary) const {

   assert_set_gc_id();

   send_meta_space_summary_event(when, summary);

   send_metaspace_chunk_free_list_summary(when, Metaspace::NonClassType, summary.metaspace_chunk_free_list_summary());

   if (UseCompressedClassPointers) {

     send_metaspace_chunk_free_list_summary(when, Metaspace::ClassType, summary.class_chunk_free_list_summary());

   }

 }

 void YoungGCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {

   assert_set_gc_id();

   assert(_tenuring_threshold != UNSET_TENURING_THRESHOLD, "Tenuring threshold has not been reported");

   GCTracer::report_gc_end_impl(timestamp, time_partitions);

   send_young_gc_event();

   _tenuring_threshold = UNSET_TENURING_THRESHOLD;

 }

 void YoungGCTracer::report_promotion_failed(const PromotionFailedInfo& pf_info) {

   assert_set_gc_id();

   send_promotion_failed_event(pf_info);

 }

 void YoungGCTracer::report_tenuring_threshold(const uint tenuring_threshold) {

   _tenuring_threshold = tenuring_threshold;

 }

 void OldGCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {

   assert_set_gc_id();

   GCTracer::report_gc_end_impl(timestamp, time_partitions);

   send_old_gc_event();

 }

 void ParallelOldTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {

   assert_set_gc_id();

   OldGCTracer::report_gc_end_impl(timestamp, time_partitions);

   send_parallel_old_event();

 }

 void ParallelOldTracer::report_dense_prefix(void* dense_prefix) {

   assert_set_gc_id();

   _parallel_old_gc_info.report_dense_prefix(dense_prefix);

 }

 void OldGCTracer::report_concurrent_mode_failure() {

   assert_set_gc_id();

   send_concurrent_mode_failure_event();

 }

 #if INCLUDE_ALL_GCS

 void G1NewTracer::report_yc_type(G1YCType type) {

   assert_set_gc_id();

   _g1_young_gc_info.set_type(type);

 }

 void G1NewTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {

   assert_set_gc_id();

   YoungGCTracer::report_gc_end_impl(timestamp, time_partitions);

   send_g1_young_gc_event();

 }

 void G1NewTracer::report_evacuation_info(EvacuationInfo* info) {

   assert_set_gc_id();

   send_evacuation_info_event(info);

 }

 void G1NewTracer::report_evacuation_failed(EvacuationFailedInfo& ef_info) {

   assert_set_gc_id();

   send_evacuation_failed_event(ef_info);

   ef_info.reset();

 }

 #endif