1 /* 2 * Copyright (c) 2012, 2019, 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 #ifndef SHARE_GC_SHARED_GCTRACE_HPP 26 #define SHARE_GC_SHARED_GCTRACE_HPP 27 28 #include "gc/shared/copyFailedInfo.hpp" 29 #include "gc/shared/gcCause.hpp" 30 #include "gc/shared/gcId.hpp" 31 #include "gc/shared/gcName.hpp" 32 #include "gc/shared/gcWhen.hpp" 33 #include "memory/metaspace.hpp" 34 #include "memory/referenceType.hpp" 35 #include "utilities/macros.hpp" 36 #include "utilities/ticks.hpp" 37 #if INCLUDE_G1GC 38 #include "gc/g1/g1YCTypes.hpp" 39 #endif 40 41 class G1EvacuationInfo; 42 class GCHeapSummary; 43 class MetaspaceChunkFreeListSummary; 44 class MetaspaceSummary; 45 class PSHeapSummary; 46 class G1HeapSummary; 47 class G1EvacSummary; 48 class ReferenceProcessorStats; 49 class TimePartitions; 50 class BoolObjectClosure; 51 52 class SharedGCInfo { 53 private: 54 GCName _name; 55 GCCause::Cause _cause; 56 Ticks _start_timestamp; 57 Ticks _end_timestamp; 58 Tickspan _sum_of_pauses; 59 Tickspan _longest_pause; 60 61 public: 62 SharedGCInfo(GCName name) : 63 _name(name), 64 _cause(GCCause::_last_gc_cause), 65 _start_timestamp(), 66 _end_timestamp(), 67 _sum_of_pauses(), 68 _longest_pause() { 69 } 70 71 void set_start_timestamp(const Ticks& timestamp) { _start_timestamp = timestamp; } 72 const Ticks start_timestamp() const { return _start_timestamp; } 73 74 void set_end_timestamp(const Ticks& timestamp) { _end_timestamp = timestamp; } 75 const Ticks end_timestamp() const { return _end_timestamp; } 76 77 void set_name(GCName name) { _name = name; } 78 GCName name() const { return _name; } 79 80 void set_cause(GCCause::Cause cause) { _cause = cause; } 81 GCCause::Cause cause() const { return _cause; } 82 83 void set_sum_of_pauses(const Tickspan& duration) { _sum_of_pauses = duration; } 84 const Tickspan sum_of_pauses() const { return _sum_of_pauses; } 85 86 void set_longest_pause(const Tickspan& duration) { _longest_pause = duration; } 87 const Tickspan longest_pause() const { return _longest_pause; } 88 }; 89 90 class ParallelOldGCInfo { 91 void* _dense_prefix; 92 public: 93 ParallelOldGCInfo() : _dense_prefix(NULL) {} 94 void report_dense_prefix(void* addr) { 95 _dense_prefix = addr; 96 } 97 void* dense_prefix() const { return _dense_prefix; } 98 }; 99 100 #if INCLUDE_G1GC 101 102 class G1YoungGCInfo { 103 G1YCType _type; 104 public: 105 G1YoungGCInfo() : _type(G1YCTypeEndSentinel) {} 106 void set_type(G1YCType type) { 107 _type = type; 108 } 109 G1YCType type() const { return _type; } 110 }; 111 112 #endif // INCLUDE_G1GC 113 114 class GCTracer : public ResourceObj { 115 protected: 116 SharedGCInfo _shared_gc_info; 117 118 public: 119 void report_gc_start(GCCause::Cause cause, const Ticks& timestamp); 120 void report_gc_end(const Ticks& timestamp, TimePartitions* time_partitions); 121 void report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary) const; 122 void report_metaspace_summary(GCWhen::Type when, const MetaspaceSummary& metaspace_summary) const; 123 void report_gc_reference_stats(const ReferenceProcessorStats& rp) const; 124 void report_object_count_after_gc(BoolObjectClosure* object_filter) NOT_SERVICES_RETURN; 125 126 protected: 127 GCTracer(GCName name) : _shared_gc_info(name) {} 128 virtual void report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp); 129 virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions); 130 131 private: 132 void send_garbage_collection_event() const; 133 void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const; 134 void send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const; 135 void send_metaspace_chunk_free_list_summary(GCWhen::Type when, Metaspace::MetadataType mdtype, const MetaspaceChunkFreeListSummary& summary) const; 136 void send_reference_stats_event(ReferenceType type, size_t count) const; 137 void send_phase_events(TimePartitions* time_partitions) const; 138 }; 139 140 class YoungGCTracer : public GCTracer { 141 static const uint UNSET_TENURING_THRESHOLD = (uint) -1; 142 143 uint _tenuring_threshold; 144 145 protected: 146 YoungGCTracer(GCName name) : GCTracer(name), _tenuring_threshold(UNSET_TENURING_THRESHOLD) {} 147 virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions); 148 149 public: 150 void report_promotion_failed(const PromotionFailedInfo& pf_info) const; 151 void report_tenuring_threshold(const uint tenuring_threshold); 152 153 /* 154 * Methods for reporting Promotion in new or outside PLAB Events. 155 * 156 * The object age is always required as it is not certain that the mark word 157 * of the oop can be trusted at this stage. 158 * 159 * obj_size is the size of the promoted object in bytes. 160 * 161 * tenured should be true if the object has been promoted to the old 162 * space during this GC, if the object is copied to survivor space 163 * from young space or survivor space (aging) tenured should be false. 164 * 165 * plab_size is the size of the newly allocated PLAB in bytes. 166 */ 167 bool should_report_promotion_events() const; 168 bool should_report_promotion_in_new_plab_event() const; 169 bool should_report_promotion_outside_plab_event() const; 170 void report_promotion_in_new_plab_event(Klass* klass, size_t obj_size, 171 uint age, bool tenured, 172 size_t plab_size) const; 173 void report_promotion_outside_plab_event(Klass* klass, size_t obj_size, 174 uint age, bool tenured) const; 175 176 private: 177 void send_young_gc_event() const; 178 void send_promotion_failed_event(const PromotionFailedInfo& pf_info) const; 179 bool should_send_promotion_in_new_plab_event() const; 180 bool should_send_promotion_outside_plab_event() const; 181 void send_promotion_in_new_plab_event(Klass* klass, size_t obj_size, 182 uint age, bool tenured, 183 size_t plab_size) const; 184 void send_promotion_outside_plab_event(Klass* klass, size_t obj_size, 185 uint age, bool tenured) const; 186 }; 187 188 class OldGCTracer : public GCTracer { 189 protected: 190 OldGCTracer(GCName name) : GCTracer(name) {} 191 virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions); 192 193 public: 194 void report_concurrent_mode_failure(); 195 196 private: 197 void send_old_gc_event() const; 198 void send_concurrent_mode_failure_event(); 199 }; 200 201 class ParallelOldTracer : public OldGCTracer { 202 ParallelOldGCInfo _parallel_old_gc_info; 203 204 public: 205 ParallelOldTracer() : OldGCTracer(ParallelOld) {} 206 void report_dense_prefix(void* dense_prefix); 207 208 protected: 209 void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions); 210 211 private: 212 void send_parallel_old_event() const; 213 }; 214 215 class SerialOldTracer : public OldGCTracer { 216 public: 217 SerialOldTracer() : OldGCTracer(SerialOld) {} 218 }; 219 220 class ParallelScavengeTracer : public YoungGCTracer { 221 public: 222 ParallelScavengeTracer() : YoungGCTracer(ParallelScavenge) {} 223 }; 224 225 class DefNewTracer : public YoungGCTracer { 226 public: 227 DefNewTracer() : YoungGCTracer(DefNew) {} 228 }; 229 230 class ParNewTracer : public YoungGCTracer { 231 public: 232 ParNewTracer() : YoungGCTracer(ParNew) {} 233 }; 234 235 #if INCLUDE_G1GC 236 class G1MMUTracer : public AllStatic { 237 static void send_g1_mmu_event(double time_slice_ms, double gc_time_ms, double max_time_ms); 238 239 public: 240 static void report_mmu(double time_slice_sec, double gc_time_sec, double max_time_sec); 241 }; 242 243 class G1NewTracer : public YoungGCTracer { 244 G1YoungGCInfo _g1_young_gc_info; 245 246 public: 247 G1NewTracer() : YoungGCTracer(G1New) {} 248 249 void report_yc_type(G1YCType type); 250 void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions); 251 void report_evacuation_info(G1EvacuationInfo* info); 252 void report_evacuation_failed(EvacuationFailedInfo& ef_info); 253 254 void report_evacuation_statistics(const G1EvacSummary& young_summary, const G1EvacSummary& old_summary) const; 255 256 void report_basic_ihop_statistics(size_t threshold, 257 size_t target_occupancy, 258 size_t current_occupancy, 259 size_t last_allocation_size, 260 double last_allocation_duration, 261 double last_marking_length); 262 void report_adaptive_ihop_statistics(size_t threshold, 263 size_t internal_target_occupancy, 264 size_t current_occupancy, 265 size_t additional_buffer_size, 266 double predicted_allocation_rate, 267 double predicted_marking_length, 268 bool prediction_active); 269 private: 270 void send_g1_young_gc_event(); 271 void send_evacuation_info_event(G1EvacuationInfo* info); 272 void send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const; 273 274 void send_young_evacuation_statistics(const G1EvacSummary& summary) const; 275 void send_old_evacuation_statistics(const G1EvacSummary& summary) const; 276 277 void send_basic_ihop_statistics(size_t threshold, 278 size_t target_occupancy, 279 size_t current_occupancy, 280 size_t last_allocation_size, 281 double last_allocation_duration, 282 double last_marking_length); 283 void send_adaptive_ihop_statistics(size_t threshold, 284 size_t internal_target_occupancy, 285 size_t current_occupancy, 286 size_t additional_buffer_size, 287 double predicted_allocation_rate, 288 double predicted_marking_length, 289 bool prediction_active); 290 }; 291 292 class G1FullGCTracer : public OldGCTracer { 293 public: 294 G1FullGCTracer() : OldGCTracer(G1Full) {} 295 }; 296 297 #endif // INCLUDE_G1GC 298 299 class CMSTracer : public OldGCTracer { 300 public: 301 CMSTracer() : OldGCTracer(ConcurrentMarkSweep) {} 302 }; 303 304 class G1OldTracer : public OldGCTracer { 305 protected: 306 void report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp); 307 public: 308 G1OldTracer() : OldGCTracer(G1Old) {} 309 void set_gc_cause(GCCause::Cause cause); 310 }; 311 312 #endif // SHARE_GC_SHARED_GCTRACE_HPP