1 /* 2 * Copyright (c) 2012, 2013, 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_IMPLEMENTATION_SHARED_GCTRACE_HPP 26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP 27 28 #include "gc_interface/gcCause.hpp" 29 #include "gc_interface/gcName.hpp" 30 #include "gc_implementation/shared/gcId.hpp" 31 #include "gc_implementation/shared/gcWhen.hpp" 32 #include "gc_implementation/shared/copyFailedInfo.hpp" 33 #include "memory/allocation.hpp" 34 #include "memory/metaspace.hpp" 35 #include "memory/referenceType.hpp" 36 #if INCLUDE_ALL_GCS 37 #include "gc_implementation/g1/g1YCTypes.hpp" 38 #endif 39 #include "utilities/macros.hpp" 40 #include "utilities/ticks.hpp" 41 42 43 class EvacuationInfo; 44 class GCHeapSummary; 45 class MetaspaceChunkFreeListSummary; 46 class MetaspaceSummary; 47 class PSHeapSummary; 48 class ReferenceProcessorStats; 49 class TimePartitions; 50 class BoolObjectClosure; 51 52 class SharedGCInfo VALUE_OBJ_CLASS_SPEC { 53 private: 54 GCId _gc_id; 55 GCName _name; 56 GCCause::Cause _cause; 57 Ticks _start_timestamp; 58 Ticks _end_timestamp; 59 Tickspan _sum_of_pauses; 60 Tickspan _longest_pause; 61 62 public: 63 SharedGCInfo(GCName name) : 64 _gc_id(GCId::undefined()), 65 _name(name), 66 _cause(GCCause::_last_gc_cause), 67 _start_timestamp(), 68 _end_timestamp(), 69 _sum_of_pauses(), 70 _longest_pause() { 71 } 72 73 void set_gc_id(GCId gc_id) { _gc_id = gc_id; } 74 const GCId& gc_id() const { return _gc_id; } 75 76 void set_start_timestamp(const Ticks& timestamp) { _start_timestamp = timestamp; } 77 const Ticks start_timestamp() const { return _start_timestamp; } 78 79 void set_end_timestamp(const Ticks& timestamp) { _end_timestamp = timestamp; } 80 const Ticks end_timestamp() const { return _end_timestamp; } 81 82 void set_name(GCName name) { _name = name; } 83 GCName name() const { return _name; } 84 85 void set_cause(GCCause::Cause cause) { _cause = cause; } 86 GCCause::Cause cause() const { return _cause; } 87 88 void set_sum_of_pauses(const Tickspan& duration) { _sum_of_pauses = duration; } 89 const Tickspan sum_of_pauses() const { return _sum_of_pauses; } 90 91 void set_longest_pause(const Tickspan& duration) { _longest_pause = duration; } 92 const Tickspan longest_pause() const { return _longest_pause; } 93 }; 94 95 class ParallelOldGCInfo VALUE_OBJ_CLASS_SPEC { 96 void* _dense_prefix; 97 public: 98 ParallelOldGCInfo() : _dense_prefix(NULL) {} 99 void report_dense_prefix(void* addr) { 100 _dense_prefix = addr; 101 } 102 void* dense_prefix() const { return _dense_prefix; } 103 }; 104 105 #if INCLUDE_ALL_GCS 106 107 class G1YoungGCInfo VALUE_OBJ_CLASS_SPEC { 108 G1YCType _type; 109 public: 110 G1YoungGCInfo() : _type(G1YCTypeEndSentinel) {} 111 void set_type(G1YCType type) { 112 _type = type; 113 } 114 G1YCType type() const { return _type; } 115 }; 116 117 #endif // INCLUDE_ALL_GCS 118 119 class GCTracer : public ResourceObj { 120 protected: 121 SharedGCInfo _shared_gc_info; 122 123 public: 124 void report_gc_start(GCCause::Cause cause, const Ticks& timestamp); 125 void report_gc_end(const Ticks& timestamp, TimePartitions* time_partitions); 126 void report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary) const; 127 void report_metaspace_summary(GCWhen::Type when, const MetaspaceSummary& metaspace_summary) const; 128 void report_gc_reference_stats(const ReferenceProcessorStats& rp) const; 129 void report_object_count_after_gc(BoolObjectClosure* object_filter) NOT_SERVICES_RETURN; 130 bool has_reported_gc_start() const; 131 const GCId& gc_id() { return _shared_gc_info.gc_id(); } 132 133 protected: 134 GCTracer(GCName name) : _shared_gc_info(name) {} 135 void report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp); 136 virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions); 137 138 private: 139 void send_garbage_collection_event() const; 140 void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const; 141 void send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const; 142 void send_metaspace_chunk_free_list_summary(GCWhen::Type when, Metaspace::MetadataType mdtype, const MetaspaceChunkFreeListSummary& summary) const; 143 void send_reference_stats_event(ReferenceType type, size_t count) const; 144 void send_phase_events(TimePartitions* time_partitions) const; 145 }; 146 147 class YoungGCTracer : public GCTracer { 148 static const uint UNSET_TENURING_THRESHOLD = (uint) -1; 149 150 uint _tenuring_threshold; 151 152 protected: 153 YoungGCTracer(GCName name) : GCTracer(name), _tenuring_threshold(UNSET_TENURING_THRESHOLD) {} 154 virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions); 155 156 public: 157 void report_promotion_failed(const PromotionFailedInfo& pf_info); 158 void report_tenuring_threshold(const uint tenuring_threshold); 159 160 /* 161 * Generates and commits a Promotion Sample if the trace event is enabled. 162 * 163 * The object age is always required as it is not certain that the mark word 164 * can be trusted at this stage. 165 * 166 * tenured should be true if the object has been promoted to the old 167 * space during this GC, if the object is copied to survivor space 168 * from young space or survivor space (aging) tenured should be false. 169 * 170 * If the plab_size is the same as object size the assumption is that the 171 * object was directly allocated instead of copied into a PLAB. 172 */ 173 void report_promotion_to_new_plab(oop const old, uint age, bool tenured, size_t plab_size); 174 175 private: 176 void send_young_gc_event() const; 177 void send_promotion_failed_event(const PromotionFailedInfo& pf_info) const; 178 }; 179 180 class OldGCTracer : public GCTracer { 181 protected: 182 OldGCTracer(GCName name) : GCTracer(name) {} 183 virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions); 184 185 public: 186 void report_concurrent_mode_failure(); 187 188 private: 189 void send_old_gc_event() const; 190 void send_concurrent_mode_failure_event(); 191 }; 192 193 class ParallelOldTracer : public OldGCTracer { 194 ParallelOldGCInfo _parallel_old_gc_info; 195 196 public: 197 ParallelOldTracer() : OldGCTracer(ParallelOld) {} 198 void report_dense_prefix(void* dense_prefix); 199 200 protected: 201 void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions); 202 203 private: 204 void send_parallel_old_event() const; 205 }; 206 207 class SerialOldTracer : public OldGCTracer { 208 public: 209 SerialOldTracer() : OldGCTracer(SerialOld) {} 210 }; 211 212 class ParallelScavengeTracer : public YoungGCTracer { 213 public: 214 ParallelScavengeTracer() : YoungGCTracer(ParallelScavenge) {} 215 }; 216 217 class DefNewTracer : public YoungGCTracer { 218 public: 219 DefNewTracer() : YoungGCTracer(DefNew) {} 220 }; 221 222 class ParNewTracer : public YoungGCTracer { 223 public: 224 ParNewTracer() : YoungGCTracer(ParNew) {} 225 }; 226 227 #if INCLUDE_ALL_GCS 228 class G1NewTracer : public YoungGCTracer { 229 G1YoungGCInfo _g1_young_gc_info; 230 231 public: 232 G1NewTracer() : YoungGCTracer(G1New) {} 233 234 void report_yc_type(G1YCType type); 235 void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions); 236 void report_evacuation_info(EvacuationInfo* info); 237 void report_evacuation_failed(EvacuationFailedInfo& ef_info); 238 239 private: 240 void send_g1_young_gc_event(); 241 void send_evacuation_info_event(EvacuationInfo* info); 242 void send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const; 243 }; 244 #endif 245 246 class CMSTracer : public OldGCTracer { 247 public: 248 CMSTracer() : OldGCTracer(ConcurrentMarkSweep) {} 249 }; 250 251 class G1OldTracer : public OldGCTracer { 252 public: 253 G1OldTracer() : OldGCTracer(G1Old) {} 254 }; 255 256 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP