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 #include "precompiled.hpp" 26 #include "gc_implementation/shared/gcHeapSummary.hpp" 27 #include "gc_implementation/shared/gcTimer.hpp" 28 #include "gc_implementation/shared/gcTrace.hpp" 29 #include "gc_implementation/shared/copyFailedInfo.hpp" 30 #include "memory/heapInspection.hpp" 31 #include "memory/iterator.hpp" 32 #include "memory/referenceProcessorStats.hpp" 33 #include "utilities/globalDefinitions.hpp" 34 35 #ifndef SERIALGC 36 #include "gc_implementation/g1/evacuationInfo.hpp" 37 #endif 38 39 #define assert_unset_gc_id() assert(_shared_gc_info.id() == SharedGCInfo::UNSET_GCID, "GC already started?") 40 #define assert_set_gc_id() assert(_shared_gc_info.id() != SharedGCInfo::UNSET_GCID, "GC not started?") 41 42 static jlong GCTracer_next_gc_id = 0; 43 static GCId create_new_gc_id() { 44 return GCTracer_next_gc_id++; 45 } 46 47 void GCTracer::report_gc_start_impl(GCCause::Cause cause, jlong timestamp) { 48 assert_unset_gc_id(); 49 50 GCId gc_id = create_new_gc_id(); 51 _shared_gc_info.set_id(gc_id); 52 _shared_gc_info.set_cause(cause); 53 _shared_gc_info.set_start_timestamp(timestamp); 54 } 55 56 void GCTracer::report_gc_start(GCCause::Cause cause, jlong timestamp) { 57 assert_unset_gc_id(); 58 59 report_gc_start_impl(cause, timestamp); 60 } 61 62 bool GCTracer::has_reported_gc_start() const { 63 return _shared_gc_info.id() != SharedGCInfo::UNSET_GCID; 64 } 65 66 void GCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) { 67 assert_set_gc_id(); 68 69 _shared_gc_info.set_sum_of_pauses(time_partitions->sum_of_pauses()); 70 _shared_gc_info.set_longest_pause(time_partitions->longest_pause()); 71 _shared_gc_info.set_end_timestamp(timestamp); 72 73 send_phase_events(time_partitions); 74 send_garbage_collection_event(); 75 } 76 77 void GCTracer::report_gc_end(jlong timestamp, TimePartitions* time_partitions) { 78 assert_set_gc_id(); 79 80 report_gc_end_impl(timestamp, time_partitions); 81 82 _shared_gc_info.set_id(SharedGCInfo::UNSET_GCID); 83 } 84 85 void GCTracer::report_gc_reference_stats(const ReferenceProcessorStats& rps) const { 86 assert_set_gc_id(); 87 88 send_reference_stats_event(REF_SOFT, rps.soft_count()); 89 send_reference_stats_event(REF_WEAK, rps.weak_count()); 90 send_reference_stats_event(REF_FINAL, rps.final_count()); 91 send_reference_stats_event(REF_PHANTOM, rps.phantom_count()); 92 } 93 94 class ObjectCountEventSenderClosure : public KlassInfoClosure { 95 GCTracer* _gc_tracer; 96 public: 97 ObjectCountEventSenderClosure(GCTracer* gc_tracer) : _gc_tracer(gc_tracer) {} 98 private: 99 void do_cinfo(KlassInfoEntry* entry) { 100 if (is_visible_klass(entry->klass())) { 101 _gc_tracer->send_object_count_after_gc_event(entry->klass(), entry->count(), 102 entry->words() * BytesPerWord); 103 } 104 } 105 106 // Do not expose internal implementation specific classes 107 bool is_visible_klass(klassOop k) { 108 return k->klass_part()->oop_is_instance() || 109 (k->klass_part()->oop_is_array() && k != Universe::systemObjArrayKlassObj()); 110 } 111 }; 112 113 void GCTracer::report_object_count_after_gc(BoolObjectClosure *is_alive_cl) { 114 if (should_send_object_count_after_gc_event()) { 115 ResourceMark rm; 116 117 KlassInfoTable cit(HeapInspection::start_of_perm_gen()); 118 if (!cit.allocation_failed()) { 119 ObjectCountEventSenderClosure event_sender(this); 120 HeapInspection::instance_inspection(&cit, &event_sender, false, is_alive_cl); 121 } 122 } 123 } 124 125 void GCTracer::report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const PermGenSummary& perm_gen_summary) const { 126 assert_set_gc_id(); 127 128 send_gc_heap_summary_event(when, heap_summary); 129 send_perm_gen_summary_event(when, perm_gen_summary); 130 } 131 132 void YoungGCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) { 133 assert_set_gc_id(); 134 assert(_tenuring_threshold != UNSET_TENURING_THRESHOLD, "Tenuring threshold has not been reported"); 135 136 GCTracer::report_gc_end_impl(timestamp, time_partitions); 137 send_young_gc_event(); 138 139 _tenuring_threshold = UNSET_TENURING_THRESHOLD; 140 } 141 142 void YoungGCTracer::report_promotion_failed(const PromotionFailedInfo& pf_info) { 143 assert_set_gc_id(); 144 145 send_promotion_failed_event(pf_info); 146 } 147 148 void YoungGCTracer::report_tenuring_threshold(const uint tenuring_threshold) { 149 _tenuring_threshold = tenuring_threshold; 150 } 151 152 void OldGCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) { 153 assert_set_gc_id(); 154 155 GCTracer::report_gc_end_impl(timestamp, time_partitions); 156 send_old_gc_event(); 157 } 158 159 void ParallelOldTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) { 160 assert_set_gc_id(); 161 162 OldGCTracer::report_gc_end_impl(timestamp, time_partitions); 163 send_parallel_old_event(); 164 } 165 166 void ParallelOldTracer::report_dense_prefix(void* dense_prefix) { 167 assert_set_gc_id(); 168 169 _parallel_old_gc_info.report_dense_prefix(dense_prefix); 170 } 171 172 void OldGCTracer::report_concurrent_mode_failure() { 173 assert_set_gc_id(); 174 175 send_concurrent_mode_failure_event(); 176 } 177 178 #ifndef SERIALGC 179 void G1NewTracer::report_yc_type(G1YCType type) { 180 assert_set_gc_id(); 181 182 _g1_young_gc_info.set_type(type); 183 } 184 185 void G1NewTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) { 186 assert_set_gc_id(); 187 188 YoungGCTracer::report_gc_end_impl(timestamp, time_partitions); 189 send_g1_young_gc_event(); 190 } 191 192 void G1NewTracer::report_evacuation_info(EvacuationInfo* info) { 193 assert_set_gc_id(); 194 195 send_evacuation_info_event(info); 196 } 197 198 void G1NewTracer::report_evacuation_failed(EvacuationFailedInfo& ef_info) { 199 assert_set_gc_id(); 200 201 send_evacuation_failed_event(ef_info); 202 ef_info.reset(); 203 } 204 #endif