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/gcId.hpp" 29 #include "gc/shared/gcTimer.hpp" 30 #include "gc/shared/gcTrace.hpp" 31 #include "gc/shared/objectCountEventSender.hpp" 32 #include "gc/shared/referenceProcessorStats.hpp" 33 #include "memory/heapInspection.hpp" 34 #include "memory/resourceArea.hpp" 35 #include "runtime/os.hpp" 36 #include "utilities/globalDefinitions.hpp" 37 #include "utilities/macros.hpp" 38 #include "utilities/ticks.inline.hpp" 39 #if INCLUDE_ALL_GCS 40 #include "gc/g1/evacuationInfo.hpp" 41 #endif 42 43 void GCTracer::report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp) { 44 _shared_gc_info.set_cause(cause); 45 _shared_gc_info.set_start_timestamp(timestamp); 46 } 47 48 void GCTracer::report_gc_start(GCCause::Cause cause, const Ticks& timestamp) { 49 report_gc_start_impl(cause, timestamp); 50 } 51 52 void GCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) { 53 _shared_gc_info.set_sum_of_pauses(time_partitions->sum_of_pauses()); 54 _shared_gc_info.set_longest_pause(time_partitions->longest_pause()); 55 _shared_gc_info.set_end_timestamp(timestamp); 56 57 send_phase_events(time_partitions); 58 send_garbage_collection_event(); 59 } 60 61 void GCTracer::report_gc_end(const Ticks& timestamp, TimePartitions* time_partitions) { 62 report_gc_end_impl(timestamp, time_partitions); 63 } 64 65 void GCTracer::report_gc_reference_stats(const ReferenceProcessorStats& rps) const { 66 send_reference_stats_event(REF_SOFT, rps.soft_count()); 67 send_reference_stats_event(REF_WEAK, rps.weak_count()); 68 send_reference_stats_event(REF_FINAL, rps.final_count()); 69 send_reference_stats_event(REF_PHANTOM, rps.phantom_count()); 70 } 71 72 #if INCLUDE_SERVICES 73 class ObjectCountEventSenderClosure : public KlassInfoClosure { 74 const double _size_threshold_percentage; 75 const size_t _total_size_in_words; 76 const Ticks _timestamp; 77 78 public: 79 ObjectCountEventSenderClosure(size_t total_size_in_words, const Ticks& timestamp) : 80 _size_threshold_percentage(ObjectCountCutOffPercent / 100), 81 _total_size_in_words(total_size_in_words), 82 _timestamp(timestamp) 83 {} 84 85 virtual void do_cinfo(KlassInfoEntry* entry) { 86 if (should_send_event(entry)) { 87 ObjectCountEventSender::send(entry, _timestamp); 88 } 89 } 90 91 private: 92 bool should_send_event(const KlassInfoEntry* entry) const { 93 double percentage_of_heap = ((double) entry->words()) / _total_size_in_words; 94 return percentage_of_heap >= _size_threshold_percentage; 95 } 96 }; 97 98 void GCTracer::report_object_count_after_gc(BoolObjectClosure* is_alive_cl) { 99 assert(is_alive_cl != NULL, "Must supply function to check liveness"); 100 101 if (ObjectCountEventSender::should_send_event()) { 102 ResourceMark rm; 103 104 KlassInfoTable cit(false); 105 if (!cit.allocation_failed()) { 106 HeapInspection hi(false, false, false, NULL); 107 hi.populate_table(&cit, is_alive_cl); 108 ObjectCountEventSenderClosure event_sender(cit.size_of_instances_in_words(), Ticks::now()); 109 cit.iterate(&event_sender); 110 } 111 } 112 } 113 #endif // INCLUDE_SERVICES 114 115 void GCTracer::report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary) const { 116 send_gc_heap_summary_event(when, heap_summary); 117 } 118 119 void GCTracer::report_metaspace_summary(GCWhen::Type when, const MetaspaceSummary& summary) const { 120 send_meta_space_summary_event(when, summary); 121 122 send_metaspace_chunk_free_list_summary(when, Metaspace::NonClassType, summary.metaspace_chunk_free_list_summary()); 123 if (UseCompressedClassPointers) { 124 send_metaspace_chunk_free_list_summary(when, Metaspace::ClassType, summary.class_chunk_free_list_summary()); 125 } 126 } 127 128 void YoungGCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) { 129 assert(_tenuring_threshold != UNSET_TENURING_THRESHOLD, "Tenuring threshold has not been reported"); 130 131 GCTracer::report_gc_end_impl(timestamp, time_partitions); 132 send_young_gc_event(); 133 134 _tenuring_threshold = UNSET_TENURING_THRESHOLD; 135 } 136 137 void YoungGCTracer::report_promotion_failed(const PromotionFailedInfo& pf_info) const { 138 send_promotion_failed_event(pf_info); 139 } 140 141 void YoungGCTracer::report_tenuring_threshold(const uint tenuring_threshold) { 142 _tenuring_threshold = tenuring_threshold; 143 } 144 145 bool YoungGCTracer::should_report_promotion_events() const { 146 return should_report_promotion_in_new_plab_event() || 147 should_report_promotion_outside_plab_event(); 148 } 149 150 bool YoungGCTracer::should_report_promotion_in_new_plab_event() const { 151 return should_send_promotion_in_new_plab_event(); 152 } 153 154 bool YoungGCTracer::should_report_promotion_outside_plab_event() const { 155 return should_send_promotion_outside_plab_event(); 156 } 157 158 void YoungGCTracer::report_promotion_in_new_plab_event(Klass* klass, size_t obj_size, 159 uint age, bool tenured, 160 size_t plab_size) const { 161 send_promotion_in_new_plab_event(klass, obj_size, age, tenured, plab_size); 162 } 163 164 void YoungGCTracer::report_promotion_outside_plab_event(Klass* klass, size_t obj_size, 165 uint age, bool tenured) const { 166 send_promotion_outside_plab_event(klass, obj_size, age, tenured); 167 } 168 169 void OldGCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) { 170 GCTracer::report_gc_end_impl(timestamp, time_partitions); 171 send_old_gc_event(); 172 } 173 174 void ParallelOldTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) { 175 OldGCTracer::report_gc_end_impl(timestamp, time_partitions); 176 send_parallel_old_event(); 177 } 178 179 void ParallelOldTracer::report_dense_prefix(void* dense_prefix) { 180 _parallel_old_gc_info.report_dense_prefix(dense_prefix); 181 } 182 183 void OldGCTracer::report_concurrent_mode_failure() { 184 send_concurrent_mode_failure_event(); 185 } 186 187 #if INCLUDE_ALL_GCS 188 void G1MMUTracer::report_mmu(double timeSlice, double gcTime, double maxTime) { 189 send_g1_mmu_event(timeSlice, gcTime, maxTime); 190 } 191 192 void G1NewTracer::report_yc_type(G1YCType type) { 193 _g1_young_gc_info.set_type(type); 194 } 195 196 void G1NewTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) { 197 YoungGCTracer::report_gc_end_impl(timestamp, time_partitions); 198 send_g1_young_gc_event(); 199 } 200 201 void G1NewTracer::report_evacuation_info(EvacuationInfo* info) { 202 send_evacuation_info_event(info); 203 } 204 205 void G1NewTracer::report_evacuation_failed(EvacuationFailedInfo& ef_info) { 206 send_evacuation_failed_event(ef_info); 207 ef_info.reset(); 208 } 209 210 void G1NewTracer::report_evacuation_statistics(const G1EvacSummary& young_summary, const G1EvacSummary& old_summary) const { 211 send_young_evacuation_statistics(young_summary); 212 send_old_evacuation_statistics(old_summary); 213 } 214 215 void G1NewTracer::report_basic_ihop_statistics(size_t threshold, 216 size_t target_ccupancy, 217 size_t current_occupancy, 218 size_t last_allocation_size, 219 double last_allocation_duration, 220 double last_marking_length) { 221 send_basic_ihop_statistics(threshold, 222 target_ccupancy, 223 current_occupancy, 224 last_allocation_size, 225 last_allocation_duration, 226 last_marking_length); 227 } 228 229 void G1NewTracer::report_adaptive_ihop_statistics(size_t additional_buffer_size, 230 double predicted_allocation_rate, 231 double predicted_marking_length, 232 bool prediction_active) { 233 send_adaptive_ihop_statistics(additional_buffer_size, 234 predicted_allocation_rate, 235 predicted_marking_length, 236 prediction_active); 237 } 238 239 #endif