1 /* 2 * Copyright (c) 2012, 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/gcWhen.hpp" 31 #include "gc_implementation/shared/copyFailedInfo.hpp" 32 #include "memory/allocation.hpp" 33 #include "memory/klassInfoClosure.hpp" 34 #include "memory/referenceType.hpp" 35 #ifndef SERIALGC 36 #include "gc_implementation/g1/g1YCTypes.hpp" 37 #endif 38 39 typedef uint GCId; 40 41 class EvacuationInfo; 42 class GCHeapSummary; 43 class PermGenSummary; 44 class PSHeapSummary; 45 class ReferenceProcessorStats; 46 class TimePartitions; 47 class BoolObjectClosure; 48 49 class SharedGCInfo VALUE_OBJ_CLASS_SPEC { 50 static const jlong UNSET_TIMESTAMP = -1; 51 52 public: 53 static const GCId UNSET_GCID = (GCId)-1; 54 55 private: 56 GCId _id; 57 GCName _name; 58 GCCause::Cause _cause; 59 jlong _start_timestamp; 60 jlong _end_timestamp; 61 jlong _sum_of_pauses; 62 jlong _longest_pause; 63 64 public: 65 SharedGCInfo(GCName name) : _id(UNSET_GCID), _name(name), _cause(GCCause::_last_gc_cause), 66 _start_timestamp(UNSET_TIMESTAMP), _end_timestamp(UNSET_TIMESTAMP), _sum_of_pauses(0), _longest_pause(0) {} 67 68 void set_id(GCId id) { _id = id; } 69 GCId id() const { return _id; } 70 71 void set_start_timestamp(jlong timestamp) { _start_timestamp = timestamp; } 72 jlong start_timestamp() const { return _start_timestamp; } 73 74 void set_end_timestamp(jlong timestamp) { _end_timestamp = timestamp; } 75 jlong 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(jlong duration) { _sum_of_pauses = duration; } 84 jlong sum_of_pauses() const { return _sum_of_pauses; } 85 86 void set_longest_pause(jlong duration) { _longest_pause = duration; } 87 jlong longest_pause() const { return _longest_pause; } 88 }; 89 90 class ParallelOldGCInfo VALUE_OBJ_CLASS_SPEC { 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 #ifndef SERIALGC 101 102 class G1YoungGCInfo VALUE_OBJ_CLASS_SPEC { 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 // SERIALGC 113 114 class ObjectCountEventSenderClosure : public KlassInfoClosure { 115 GCTracer* _gc_tracer; 116 const double _size_threshold_percentage; 117 const size_t _total_size_in_words; 118 public: 119 ObjectCountEventSenderClosure(GCTracer* gc_tracer, size_t total_size_in_words) : 120 _gc_tracer(gc_tracer), 121 _size_threshold_percentage(ObjectCountCutOffPercent / 100), 122 _total_size_in_words(total_size_in_words) 123 {} 124 virtual void do_cinfo(KlassInfoEntry* entry); 125 protected: 126 virtual void send_event(KlassInfoEntry* entry); 127 private: 128 bool should_send_event(KlassInfoEntry* entry) const; 129 }; 130 131 class ObjectCountFilter : public BoolObjectClosure { 132 BoolObjectClosure* _is_alive; 133 public: 134 ObjectCountFilter(BoolObjectClosure* is_alive = NULL) : _is_alive(is_alive) {} 135 bool do_object_b(oop obj); 136 void do_object(oop obj) { ShouldNotReachHere(); } 137 private: 138 bool is_externally_visible_klass(klassOop k) const; 139 }; 140 141 class GCTracer : public ResourceObj { 142 friend class ObjectCountEventSenderClosure; 143 protected: 144 SharedGCInfo _shared_gc_info; 145 146 public: 147 void report_gc_start(GCCause::Cause cause, jlong timestamp); 148 void report_gc_end(jlong timestamp, TimePartitions* time_partitions); 149 void report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const PermGenSummary& perm_gen_summary) const; 150 void report_gc_reference_stats(const ReferenceProcessorStats& rp) const; 151 void report_object_count_after_gc(BoolObjectClosure* object_filter); 152 153 bool has_reported_gc_start() const; 154 155 protected: 156 GCTracer(GCName name) : _shared_gc_info(name) {} 157 virtual void report_gc_start_impl(GCCause::Cause cause, jlong timestamp); 158 virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions); 159 160 private: 161 void send_garbage_collection_event() const; 162 void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const; 163 void send_perm_gen_summary_event(GCWhen::Type when, const PermGenSummary& perm_gen_summary) const; 164 void send_reference_stats_event(ReferenceType type, size_t count) const; 165 void send_phase_events(TimePartitions* time_partitions) const; 166 void send_object_count_after_gc_event(klassOop klass, jlong count, julong total_size) const; 167 bool should_send_object_count_after_gc_event() const; 168 }; 169 170 class YoungGCTracer : public GCTracer { 171 static const uint UNSET_TENURING_THRESHOLD = (uint) -1; 172 173 uint _tenuring_threshold; 174 175 protected: 176 YoungGCTracer(GCName name) : GCTracer(name), _tenuring_threshold(UNSET_TENURING_THRESHOLD) {} 177 virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions); 178 179 public: 180 void report_promotion_failed(const PromotionFailedInfo& pf_info); 181 void report_tenuring_threshold(const uint tenuring_threshold); 182 183 private: 184 void send_young_gc_event() const; 185 void send_promotion_failed_event(const PromotionFailedInfo& pf_info) const; 186 }; 187 188 class OldGCTracer : public GCTracer { 189 protected: 190 OldGCTracer(GCName name) : GCTracer(name) {} 191 virtual void report_gc_end_impl(jlong 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(jlong 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 #ifndef SERIALGC 236 class G1NewTracer : public YoungGCTracer { 237 G1YoungGCInfo _g1_young_gc_info; 238 239 public: 240 G1NewTracer() : YoungGCTracer(G1New) {} 241 242 void report_yc_type(G1YCType type); 243 void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions); 244 void report_evacuation_info(EvacuationInfo* info); 245 void report_evacuation_failed(EvacuationFailedInfo& ef_info); 246 247 private: 248 void send_g1_young_gc_event(); 249 void send_evacuation_info_event(EvacuationInfo* info); 250 void send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const; 251 }; 252 #endif 253 254 class CMSTracer : public OldGCTracer { 255 public: 256 CMSTracer() : OldGCTracer(ConcurrentMarkSweep) {} 257 }; 258 259 class G1OldTracer : public OldGCTracer { 260 public: 261 G1OldTracer() : OldGCTracer(G1Old) {} 262 }; 263 264 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP