jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/shared/gcTrace.cpp@55a0da3d420b (annotated)

src/share/vm/gc_implementation/shared/gcTrace.cpp@55a0da3d420b (annotated)

src/share/vm/gc_implementation/shared/gcTrace.cpp

Tue, 26 Nov 2013 14:35:38 +0100

author: sjohanss
date: Tue, 26 Nov 2013 14:35:38 +0100
changeset 6148: 55a0da3d420b
parent 5388: 6aa440bc1125
child 6131: 86e6d691f2e1
permissions: -rw-r--r--

8027675: Full collections with Serial slower in JDK 8 compared to 7u40
Summary: Reduced the number of calls to follow_class_loader and instead marked and pushed the klass holder directly. Also removed unneeded calls to adjust_klass.
Reviewed-by: coleenp, jmasa, mgerdin, tschatzl

 /*
  * 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"
 #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, jlong 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, jlong 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(jlong 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(jlong 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 jlong _timestamp;
  public:
   ObjectCountEventSenderClosure(GCId gc_id, size_t total_size_in_words, jlong 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);
       jlong timestamp = os::elapsed_counter();
       ObjectCountEventSenderClosure event_sender(_shared_gc_info.id(), cit.size_of_instances_in_words(), timestamp);
       cit.iterate(&event_sender);
     }
   }
 }
 #endif // INCLUDE_SERVICES
 void GCTracer::report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const MetaspaceSummary& meta_space_summary) const {
   assert_set_gc_id();
   send_gc_heap_summary_event(when, heap_summary);
   send_meta_space_summary_event(when, meta_space_summary);
 }
 void YoungGCTracer::report_gc_end_impl(jlong 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(jlong 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(jlong 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(jlong 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

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/gc_implementation/shared/gcTrace.cpp@55a0da3d420b (annotated)

src/share/vm/gc_implementation/shared/gcTrace.cpp