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 #include "precompiled.hpp"
26 #include "gc/shared/copyFailedInfo.hpp"
27 #include "gc/shared/gcHeapSummary.hpp"
28 #include "gc/shared/gcId.hpp"
29 #include "gc/shared/gcTimer.hpp"
30 #include "gc/shared/gcTrace.hpp"
31 #include "gc/shared/objectCountEventSender.hpp"
32 #include "gc/shared/referenceProcessorStats.hpp"
33 #include "memory/heapInspection.hpp"
34 #include "memory/resourceArea.hpp"
35 #include "runtime/os.hpp"
36 #include "utilities/globalDefinitions.hpp"
37 #include "utilities/macros.hpp"
38 #include "utilities/ticks.inline.hpp"
39 #if INCLUDE_ALL_GCS
40 #include "gc/g1/evacuationInfo.hpp"
41 #endif
42
43 void GCTracer::report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp) {
44 _shared_gc_info.set_cause(cause);
45 _shared_gc_info.set_start_timestamp(timestamp);
46 }
47
48 void GCTracer::report_gc_start(GCCause::Cause cause, const Ticks& timestamp) {
49 report_gc_start_impl(cause, timestamp);
50 }
51
52 void GCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {
53 _shared_gc_info.set_sum_of_pauses(time_partitions->sum_of_pauses());
54 _shared_gc_info.set_longest_pause(time_partitions->longest_pause());
55 _shared_gc_info.set_end_timestamp(timestamp);
56
57 send_phase_events(time_partitions);
58 send_garbage_collection_event();
59 }
60
61 void GCTracer::report_gc_end(const Ticks& timestamp, TimePartitions* time_partitions) {
62 report_gc_end_impl(timestamp, time_partitions);
63 }
64
65 void GCTracer::report_gc_reference_stats(const ReferenceProcessorStats& rps) const {
66 send_reference_stats_event(REF_SOFT, rps.soft_count());
67 send_reference_stats_event(REF_WEAK, rps.weak_count());
68 send_reference_stats_event(REF_FINAL, rps.final_count());
69 send_reference_stats_event(REF_PHANTOM, rps.phantom_count());
70 send_reference_stats_event(REF_CLEANER, rps.cleaner_count());
71 send_reference_stats_event(REF_JNI, rps.jni_weak_ref_count());
72 }
73
74 #if INCLUDE_SERVICES
75 class ObjectCountEventSenderClosure : public KlassInfoClosure {
76 const double _size_threshold_percentage;
77 const size_t _total_size_in_words;
78 const Ticks _timestamp;
79
80 public:
81 ObjectCountEventSenderClosure(size_t total_size_in_words, const Ticks& timestamp) :
82 _size_threshold_percentage(ObjectCountCutOffPercent / 100),
83 _total_size_in_words(total_size_in_words),
84 _timestamp(timestamp)
85 {}
86
87 virtual void do_cinfo(KlassInfoEntry* entry) {
88 if (should_send_event(entry)) {
89 ObjectCountEventSender::send(entry, _timestamp);
90 }
91 }
92
93 private:
94 bool should_send_event(const KlassInfoEntry* entry) const {
95 double percentage_of_heap = ((double) entry->words()) / _total_size_in_words;
96 return percentage_of_heap >= _size_threshold_percentage;
97 }
98 };
99
100 void GCTracer::report_object_count_after_gc(BoolObjectClosure* is_alive_cl) {
101 assert(is_alive_cl != NULL, "Must supply function to check liveness");
102
103 if (ObjectCountEventSender::should_send_event()) {
104 ResourceMark rm;
105
106 KlassInfoTable cit(false);
107 if (!cit.allocation_failed()) {
108 HeapInspection hi(false, false, false, NULL);
109 hi.populate_table(&cit, is_alive_cl);
110 ObjectCountEventSenderClosure event_sender(cit.size_of_instances_in_words(), Ticks::now());
111 cit.iterate(&event_sender);
112 }
113 }
114 }
115 #endif // INCLUDE_SERVICES
116
117 void GCTracer::report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary) const {
118 send_gc_heap_summary_event(when, heap_summary);
119 }
120
121 void GCTracer::report_metaspace_summary(GCWhen::Type when, const MetaspaceSummary& summary) const {
122 send_meta_space_summary_event(when, summary);
123
124 send_metaspace_chunk_free_list_summary(when, Metaspace::NonClassType, summary.metaspace_chunk_free_list_summary());
125 if (UseCompressedClassPointers) {
126 send_metaspace_chunk_free_list_summary(when, Metaspace::ClassType, summary.class_chunk_free_list_summary());
127 }
128 }
129
130 void YoungGCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {
131 assert(_tenuring_threshold != UNSET_TENURING_THRESHOLD, "Tenuring threshold has not been reported");
132
133 GCTracer::report_gc_end_impl(timestamp, time_partitions);
134 send_young_gc_event();
135
136 _tenuring_threshold = UNSET_TENURING_THRESHOLD;
137 }
138
139 void YoungGCTracer::report_promotion_failed(const PromotionFailedInfo& pf_info) const {
140 send_promotion_failed_event(pf_info);
141 }
142
143 void YoungGCTracer::report_tenuring_threshold(const uint tenuring_threshold) {
144 _tenuring_threshold = tenuring_threshold;
145 }
146
147 bool YoungGCTracer::should_report_promotion_events() const {
148 return should_report_promotion_in_new_plab_event() ||
149 should_report_promotion_outside_plab_event();
150 }
151
152 bool YoungGCTracer::should_report_promotion_in_new_plab_event() const {
153 return should_send_promotion_in_new_plab_event();
154 }
155
156 bool YoungGCTracer::should_report_promotion_outside_plab_event() const {
157 return should_send_promotion_outside_plab_event();
158 }
159
160 void YoungGCTracer::report_promotion_in_new_plab_event(Klass* klass, size_t obj_size,
161 uint age, bool tenured,
162 size_t plab_size) const {
163 send_promotion_in_new_plab_event(klass, obj_size, age, tenured, plab_size);
164 }
165
166 void YoungGCTracer::report_promotion_outside_plab_event(Klass* klass, size_t obj_size,
167 uint age, bool tenured) const {
168 send_promotion_outside_plab_event(klass, obj_size, age, tenured);
169 }
170
171 void OldGCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {
172 GCTracer::report_gc_end_impl(timestamp, time_partitions);
173 send_old_gc_event();
174 }
175
176 void ParallelOldTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {
177 OldGCTracer::report_gc_end_impl(timestamp, time_partitions);
178 send_parallel_old_event();
179 }
180
181 void ParallelOldTracer::report_dense_prefix(void* dense_prefix) {
182 _parallel_old_gc_info.report_dense_prefix(dense_prefix);
183 }
184
185 void OldGCTracer::report_concurrent_mode_failure() {
186 send_concurrent_mode_failure_event();
187 }
188
189 #if INCLUDE_ALL_GCS
190 void G1MMUTracer::report_mmu(double timeSlice, double gcTime, double maxTime) {
191 send_g1_mmu_event(timeSlice, gcTime, maxTime);
192 }
193
194 void G1NewTracer::report_yc_type(G1YCType type) {
195 _g1_young_gc_info.set_type(type);
196 }
197
198 void G1NewTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {
199 YoungGCTracer::report_gc_end_impl(timestamp, time_partitions);
200 send_g1_young_gc_event();
201 }
202
203 void G1NewTracer::report_evacuation_info(EvacuationInfo* info) {
204 send_evacuation_info_event(info);
205 }
206
207 void G1NewTracer::report_evacuation_failed(EvacuationFailedInfo& ef_info) {
208 send_evacuation_failed_event(ef_info);
209 ef_info.reset();
210 }
211
212 void G1NewTracer::report_evacuation_statistics(const G1EvacSummary& young_summary, const G1EvacSummary& old_summary) const {
213 send_young_evacuation_statistics(young_summary);
214 send_old_evacuation_statistics(old_summary);
215 }
216
217 #endif