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/referenceType.hpp" 34 #ifndef SERIALGC 35 #include "gc_implementation/g1/g1YCTypes.hpp" 36 #endif 37 38 typedef uint GCId; 39 40 class EvacuationInfo; 41 class GCHeapSummary; 42 class PermGenSummary; 43 class PSHeapSummary; 44 class ReferenceProcessorStats; 45 class TimePartitions; 46 class BoolObjectClosure; 47 48 class SharedGCInfo VALUE_OBJ_CLASS_SPEC { 49 static const jlong UNSET_TIMESTAMP = -1; 50 51 public: 52 static const GCId UNSET_GCID = (GCId)-1; 53 54 private: 55 GCId _id; 56 GCName _name; 57 GCCause::Cause _cause; 58 jlong _start_timestamp; 59 jlong _end_timestamp; 60 jlong _sum_of_pauses; 61 jlong _longest_pause; 62 63 public: 64 SharedGCInfo(GCName name) : _id(UNSET_GCID), _name(name), _cause(GCCause::_last_gc_cause), 65 _start_timestamp(UNSET_TIMESTAMP), _end_timestamp(UNSET_TIMESTAMP), _sum_of_pauses(0), _longest_pause(0) {} 66 67 void set_id(GCId id) { _id = id; } 68 GCId id() const { return _id; } 69 70 void set_start_timestamp(jlong timestamp) { _start_timestamp = timestamp; } 71 jlong start_timestamp() const { return _start_timestamp; } 72 73 void set_end_timestamp(jlong timestamp) { _end_timestamp = timestamp; } 74 jlong end_timestamp() const { return _end_timestamp; } 75 76 void set_name(GCName name) { _name = name; } 77 GCName name() const { return _name; } 78 79 void set_cause(GCCause::Cause cause) { _cause = cause; } 80 GCCause::Cause cause() const { return _cause; } 81 82 void set_sum_of_pauses(jlong duration) { _sum_of_pauses = duration; } 83 jlong sum_of_pauses() const { return _sum_of_pauses; } 84 85 void set_longest_pause(jlong duration) { _longest_pause = duration; } 86 jlong longest_pause() const { return _longest_pause; } 87 }; 88 89 class ParallelOldGCInfo VALUE_OBJ_CLASS_SPEC { 90 void* _dense_prefix; 91 public: 92 ParallelOldGCInfo() : _dense_prefix(NULL) {} 93 void report_dense_prefix(void* addr) { 94 _dense_prefix = addr; 95 } 96 void* dense_prefix() const { return _dense_prefix; } 97 }; 98 99 #ifndef SERIALGC 100 101 class G1YoungGCInfo VALUE_OBJ_CLASS_SPEC { 102 G1YCType _type; 103 public: 104 G1YoungGCInfo() : _type(G1YCTypeEndSentinel) {} 105 void set_type(G1YCType type) { 106 _type = type; 107 } 108 G1YCType type() const { return _type; } 109 }; 110 111 #endif // SERIALGC 112 113 class GCTracer : public ResourceObj { 114 friend class ObjectCountEventSenderClosure; 115 protected: 116 SharedGCInfo _shared_gc_info; 117 118 public: 119 void report_gc_start(GCCause::Cause cause, jlong timestamp); 120 void report_gc_end(jlong timestamp, TimePartitions* time_partitions); 121 void report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const PermGenSummary& perm_gen_summary) const; 122 void report_gc_reference_stats(const ReferenceProcessorStats& rp) const; 123 void report_object_count_after_gc(BoolObjectClosure* object_filter); 124 125 bool has_reported_gc_start() const; 126 127 protected: 128 GCTracer(GCName name) : _shared_gc_info(name) {} 129 virtual void report_gc_start_impl(GCCause::Cause cause, jlong timestamp); 130 virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions); 131 132 private: 133 void send_garbage_collection_event() const; 134 void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const; 135 void send_perm_gen_summary_event(GCWhen::Type when, const PermGenSummary& perm_gen_summary) const; 136 void send_reference_stats_event(ReferenceType type, size_t count) const; 137 void send_phase_events(TimePartitions* time_partitions) const; 138 void send_object_count_after_gc_event(klassOop klass, jlong count, julong total_size) const; 139 bool should_send_object_count_after_gc_event() const; 140 }; 141 142 class YoungGCTracer : public GCTracer { 143 static const uint UNSET_TENURING_THRESHOLD = (uint) -1; 144 145 uint _tenuring_threshold; 146 147 protected: 148 YoungGCTracer(GCName name) : GCTracer(name), _tenuring_threshold(UNSET_TENURING_THRESHOLD) {} 149 virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions); 150 151 public: 152 void report_promotion_failed(const PromotionFailedInfo& pf_info); 153 void report_tenuring_threshold(const uint tenuring_threshold); 154 155 private: 156 void send_young_gc_event() const; 157 void send_promotion_failed_event(const PromotionFailedInfo& pf_info) const; 158 }; 159 160 class OldGCTracer : public GCTracer { 161 protected: 162 OldGCTracer(GCName name) : GCTracer(name) {} 163 virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions); 164 165 private: 166 void send_old_gc_event() const; 167 }; 168 169 class ParallelOldTracer : public OldGCTracer { 170 ParallelOldGCInfo _parallel_old_gc_info; 171 172 public: 173 ParallelOldTracer() : OldGCTracer(ParallelOld) {} 174 void report_dense_prefix(void* dense_prefix); 175 176 protected: 177 void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions); 178 179 private: 180 void send_parallel_old_event() const; 181 }; 182 183 class SerialOldTracer : public OldGCTracer { 184 public: 185 SerialOldTracer() : OldGCTracer(SerialOld) {} 186 }; 187 188 class ParallelScavengeTracer : public YoungGCTracer { 189 public: 190 ParallelScavengeTracer() : YoungGCTracer(ParallelScavenge) {} 191 }; 192 193 class DefNewTracer : public YoungGCTracer { 194 public: 195 DefNewTracer() : YoungGCTracer(DefNew) {} 196 }; 197 198 class ParNewTracer : public YoungGCTracer { 199 public: 200 ParNewTracer() : YoungGCTracer(ParNew) {} 201 }; 202 203 #ifndef SERIALGC 204 class G1NewTracer : public YoungGCTracer { 205 G1YoungGCInfo _g1_young_gc_info; 206 207 public: 208 G1NewTracer() : YoungGCTracer(G1New) {} 209 210 void report_yc_type(G1YCType type); 211 void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions); 212 void report_evacuation_info(EvacuationInfo* info); 213 214 private: 215 void send_g1_young_gc_event(); 216 void send_evacuation_info_event(EvacuationInfo* info); 217 }; 218 #endif 219 220 class CMSTracer : public OldGCTracer { 221 public: 222 CMSTracer() : OldGCTracer(ConcurrentMarkSweep) {} 223 224 void report_concurrent_mode_failure(); 225 226 private: 227 void send_concurrent_mode_failure_event(); 228 }; 229 230 class G1OldTracer : public OldGCTracer { 231 public: 232 G1OldTracer() : OldGCTracer(G1Old) {} 233 }; 234 235 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP