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