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 #define assert_unset_gc_id() assert(_shared_gc_info.gc_id().is_undefined(), "GC already started?") 44 #define assert_set_gc_id() assert(!_shared_gc_info.gc_id().is_undefined(), "GC not started?") 45 46 void GCTracer::report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp) { 47 assert_unset_gc_id(); 48 49 GCId gc_id = GCId::create(); 50 _shared_gc_info.set_gc_id(gc_id); 51 _shared_gc_info.set_cause(cause); 52 _shared_gc_info.set_start_timestamp(timestamp); 53 } 54 55 void GCTracer::report_gc_start(GCCause::Cause cause, const Ticks& timestamp) { 56 assert_unset_gc_id(); 57 58 report_gc_start_impl(cause, timestamp); 59 } 60 61 bool GCTracer::has_reported_gc_start() const { 62 return !_shared_gc_info.gc_id().is_undefined(); 63 } 64 65 void GCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) { 66 assert_set_gc_id(); 67 68 _shared_gc_info.set_sum_of_pauses(time_partitions->sum_of_pauses()); 69 _shared_gc_info.set_longest_pause(time_partitions->longest_pause()); 70 _shared_gc_info.set_end_timestamp(timestamp); 71 72 send_phase_events(time_partitions); 73 send_garbage_collection_event(); 74 } 75 76 void GCTracer::report_gc_end(const Ticks& timestamp, TimePartitions* time_partitions) { 77 assert_set_gc_id(); 78 79 report_gc_end_impl(timestamp, time_partitions); 80 81 _shared_gc_info.set_gc_id(GCId::undefined()); 82 } 83 84 void GCTracer::report_gc_reference_stats(const ReferenceProcessorStats& rps) const { 85 assert_set_gc_id(); 86 87 send_reference_stats_event(REF_SOFT, rps.soft_count()); 88 send_reference_stats_event(REF_WEAK, rps.weak_count()); 89 send_reference_stats_event(REF_FINAL, rps.final_count()); 90 send_reference_stats_event(REF_PHANTOM, rps.phantom_count()); 91 } 92 93 #if INCLUDE_SERVICES 94 class ObjectCountEventSenderClosure : public KlassInfoClosure { 95 const GCId _gc_id; 96 const double _size_threshold_percentage; 97 const size_t _total_size_in_words; 98 const Ticks _timestamp; 99 100 public: 101 ObjectCountEventSenderClosure(GCId gc_id, size_t total_size_in_words, const Ticks& timestamp) : 102 _gc_id(gc_id), 103 _size_threshold_percentage(ObjectCountCutOffPercent / 100), 104 _total_size_in_words(total_size_in_words), 105 _timestamp(timestamp) 106 {} 107 108 virtual void do_cinfo(KlassInfoEntry* entry) { 109 if (should_send_event(entry)) { 110 ObjectCountEventSender::send(entry, _gc_id, _timestamp); 111 } 112 } 113 114 private: 115 bool should_send_event(const KlassInfoEntry* entry) const { 116 double percentage_of_heap = ((double) entry->words()) / _total_size_in_words; 117 return percentage_of_heap >= _size_threshold_percentage; 118 } 119 }; 120 121 void GCTracer::report_object_count_after_gc(BoolObjectClosure* is_alive_cl) { 122 assert_set_gc_id(); 123 assert(is_alive_cl != NULL, "Must supply function to check liveness"); 124 125 if (ObjectCountEventSender::should_send_event()) { 126 ResourceMark rm; 127 128 KlassInfoTable cit(false); 129 if (!cit.allocation_failed()) { 130 HeapInspection hi(false, false, false, NULL); 131 hi.populate_table(&cit, is_alive_cl); 132 ObjectCountEventSenderClosure event_sender(_shared_gc_info.gc_id(), cit.size_of_instances_in_words(), Ticks::now()); 133 cit.iterate(&event_sender); 134 } 135 } 136 } 137 #endif // INCLUDE_SERVICES 138 139 void GCTracer::report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary) const { 140 assert_set_gc_id(); 141 142 send_gc_heap_summary_event(when, heap_summary); 143 } 144 145 void GCTracer::report_metaspace_summary(GCWhen::Type when, const MetaspaceSummary& summary) const { 146 assert_set_gc_id(); 147 148 send_meta_space_summary_event(when, summary); 149 150 send_metaspace_chunk_free_list_summary(when, Metaspace::NonClassType, summary.metaspace_chunk_free_list_summary()); 151 if (UseCompressedClassPointers) { 152 send_metaspace_chunk_free_list_summary(when, Metaspace::ClassType, summary.class_chunk_free_list_summary()); 153 } 154 } 155 156 void YoungGCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) { 157 assert_set_gc_id(); 158 assert(_tenuring_threshold != UNSET_TENURING_THRESHOLD, "Tenuring threshold has not been reported"); 159 160 GCTracer::report_gc_end_impl(timestamp, time_partitions); 161 send_young_gc_event(); 162 163 _tenuring_threshold = UNSET_TENURING_THRESHOLD; 164 } 165 166 void YoungGCTracer::report_promotion_failed(const PromotionFailedInfo& pf_info) const { 167 assert_set_gc_id(); 168 169 send_promotion_failed_event(pf_info); 170 } 171 172 void YoungGCTracer::report_tenuring_threshold(const uint tenuring_threshold) { 173 _tenuring_threshold = tenuring_threshold; 174 } 175 176 bool YoungGCTracer::should_report_promotion_in_new_plab_event() const { 177 return should_send_promotion_in_new_plab_event(); 178 } 179 180 bool YoungGCTracer::should_report_promotion_outside_plab_event() const { 181 return should_send_promotion_outside_plab_event(); 182 } 183 184 void YoungGCTracer::report_promotion_in_new_plab_event(Klass* klass, size_t obj_size, 185 uint age, bool tenured, 186 size_t plab_size) const { 187 assert_set_gc_id(); 188 send_promotion_in_new_plab_event(klass, obj_size, age, tenured, plab_size); 189 } 190 191 void YoungGCTracer::report_promotion_outside_plab_event(Klass* klass, size_t obj_size, 192 uint age, bool tenured) const { 193 assert_set_gc_id(); 194 send_promotion_outside_plab_event(klass, obj_size, age, tenured); 195 } 196 197 void OldGCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) { 198 assert_set_gc_id(); 199 200 GCTracer::report_gc_end_impl(timestamp, time_partitions); 201 send_old_gc_event(); 202 } 203 204 void ParallelOldTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) { 205 assert_set_gc_id(); 206 207 OldGCTracer::report_gc_end_impl(timestamp, time_partitions); 208 send_parallel_old_event(); 209 } 210 211 void ParallelOldTracer::report_dense_prefix(void* dense_prefix) { 212 assert_set_gc_id(); 213 214 _parallel_old_gc_info.report_dense_prefix(dense_prefix); 215 } 216 217 void OldGCTracer::report_concurrent_mode_failure() { 218 assert_set_gc_id(); 219 220 send_concurrent_mode_failure_event(); 221 } 222 223 #if INCLUDE_ALL_GCS 224 void G1NewTracer::report_yc_type(G1YCType type) { 225 assert_set_gc_id(); 226 227 _g1_young_gc_info.set_type(type); 228 } 229 230 void G1NewTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) { 231 assert_set_gc_id(); 232 233 YoungGCTracer::report_gc_end_impl(timestamp, time_partitions); 234 send_g1_young_gc_event(); 235 } 236 237 void G1NewTracer::report_evacuation_info(EvacuationInfo* info) { 238 assert_set_gc_id(); 239 240 send_evacuation_info_event(info); 241 } 242 243 void G1NewTracer::report_evacuation_failed(EvacuationFailedInfo& ef_info) { 244 assert_set_gc_id(); 245 246 send_evacuation_failed_event(ef_info); 247 ef_info.reset(); 248 } 249 #endif