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 #define assert_unset_gc_id() assert(_shared_gc_info.gc_id().is_undefined(), "GC already started?")
44 #define assert_set_gc_id() assert(!_shared_gc_info.gc_id().is_undefined(), "GC not started?")
45
46 void GCTracer::report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp) {
47 assert_unset_gc_id();
48
49 GCId gc_id = GCId::create();
50 _shared_gc_info.set_gc_id(gc_id);
51 _shared_gc_info.set_cause(cause);
52 _shared_gc_info.set_start_timestamp(timestamp);
53 }
54
55 void GCTracer::report_gc_start(GCCause::Cause cause, const Ticks& timestamp) {
56 assert_unset_gc_id();
57
58 report_gc_start_impl(cause, timestamp);
59 }
60
61 bool GCTracer::has_reported_gc_start() const {
62 return !_shared_gc_info.gc_id().is_undefined();
63 }
64
65 void GCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {
66 assert_set_gc_id();
67
68 _shared_gc_info.set_sum_of_pauses(time_partitions->sum_of_pauses());
69 _shared_gc_info.set_longest_pause(time_partitions->longest_pause());
70 _shared_gc_info.set_end_timestamp(timestamp);
71
72 send_phase_events(time_partitions);
73 send_garbage_collection_event();
74 }
75
76 void GCTracer::report_gc_end(const Ticks& timestamp, TimePartitions* time_partitions) {
77 assert_set_gc_id();
78
79 report_gc_end_impl(timestamp, time_partitions);
80
81 _shared_gc_info.set_gc_id(GCId::undefined());
82 }
83
84 void GCTracer::report_gc_reference_stats(const ReferenceProcessorStats& rps) const {
85 assert_set_gc_id();
86
87 send_reference_stats_event(REF_SOFT, rps.soft_count());
88 send_reference_stats_event(REF_WEAK, rps.weak_count());
89 send_reference_stats_event(REF_FINAL, rps.final_count());
90 send_reference_stats_event(REF_PHANTOM, rps.phantom_count());
91 send_reference_stats_event(REF_CLEANER, rps.cleaner_count());
92 send_reference_stats_event(REF_JNI, rps.jni_weak_ref_count());
93 }
94
95 #if INCLUDE_SERVICES
96 class ObjectCountEventSenderClosure : public KlassInfoClosure {
97 const GCId _gc_id;
98 const double _size_threshold_percentage;
99 const size_t _total_size_in_words;
100 const Ticks _timestamp;
101
102 public:
103 ObjectCountEventSenderClosure(GCId gc_id, size_t total_size_in_words, const Ticks& timestamp) :
104 _gc_id(gc_id),
105 _size_threshold_percentage(ObjectCountCutOffPercent / 100),
106 _total_size_in_words(total_size_in_words),
107 _timestamp(timestamp)
108 {}
109
110 virtual void do_cinfo(KlassInfoEntry* entry) {
111 if (should_send_event(entry)) {
112 ObjectCountEventSender::send(entry, _gc_id, _timestamp);
113 }
114 }
115
116 private:
117 bool should_send_event(const KlassInfoEntry* entry) const {
118 double percentage_of_heap = ((double) entry->words()) / _total_size_in_words;
119 return percentage_of_heap >= _size_threshold_percentage;
120 }
121 };
122
123 void GCTracer::report_object_count_after_gc(BoolObjectClosure* is_alive_cl) {
124 assert_set_gc_id();
125 assert(is_alive_cl != NULL, "Must supply function to check liveness");
126
127 if (ObjectCountEventSender::should_send_event()) {
128 ResourceMark rm;
129
130 KlassInfoTable cit(false);
131 if (!cit.allocation_failed()) {
132 HeapInspection hi(false, false, false, NULL);
133 hi.populate_table(&cit, is_alive_cl);
134 ObjectCountEventSenderClosure event_sender(_shared_gc_info.gc_id(), cit.size_of_instances_in_words(), Ticks::now());
135 cit.iterate(&event_sender);
136 }
137 }
138 }
139 #endif // INCLUDE_SERVICES
140
141 void GCTracer::report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary) const {
142 assert_set_gc_id();
143
144 send_gc_heap_summary_event(when, heap_summary);
145 }
146
147 void GCTracer::report_metaspace_summary(GCWhen::Type when, const MetaspaceSummary& summary) const {
148 assert_set_gc_id();
149
150 send_meta_space_summary_event(when, summary);
151
152 send_metaspace_chunk_free_list_summary(when, Metaspace::NonClassType, summary.metaspace_chunk_free_list_summary());
153 if (UseCompressedClassPointers) {
154 send_metaspace_chunk_free_list_summary(when, Metaspace::ClassType, summary.class_chunk_free_list_summary());
155 }
156 }
157
158 void YoungGCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {
159 assert_set_gc_id();
160 assert(_tenuring_threshold != UNSET_TENURING_THRESHOLD, "Tenuring threshold has not been reported");
161
162 GCTracer::report_gc_end_impl(timestamp, time_partitions);
163 send_young_gc_event();
164
165 _tenuring_threshold = UNSET_TENURING_THRESHOLD;
166 }
167
168 void YoungGCTracer::report_promotion_failed(const PromotionFailedInfo& pf_info) const {
169 assert_set_gc_id();
170
171 send_promotion_failed_event(pf_info);
172 }
173
174 void YoungGCTracer::report_tenuring_threshold(const uint tenuring_threshold) {
175 _tenuring_threshold = tenuring_threshold;
176 }
177
178 bool YoungGCTracer::should_report_promotion_events() const {
179 return should_report_promotion_in_new_plab_event() ||
180 should_report_promotion_outside_plab_event();
181 }
182
183 bool YoungGCTracer::should_report_promotion_in_new_plab_event() const {
184 return should_send_promotion_in_new_plab_event();
185 }
186
187 bool YoungGCTracer::should_report_promotion_outside_plab_event() const {
188 return should_send_promotion_outside_plab_event();
189 }
190
191 void YoungGCTracer::report_promotion_in_new_plab_event(Klass* klass, size_t obj_size,
192 uint age, bool tenured,
193 size_t plab_size) const {
194 assert_set_gc_id();
195 send_promotion_in_new_plab_event(klass, obj_size, age, tenured, plab_size);
196 }
197
198 void YoungGCTracer::report_promotion_outside_plab_event(Klass* klass, size_t obj_size,
199 uint age, bool tenured) const {
200 assert_set_gc_id();
201 send_promotion_outside_plab_event(klass, obj_size, age, tenured);
202 }
203
204 void OldGCTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {
205 assert_set_gc_id();
206
207 GCTracer::report_gc_end_impl(timestamp, time_partitions);
208 send_old_gc_event();
209 }
210
211 void ParallelOldTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {
212 assert_set_gc_id();
213
214 OldGCTracer::report_gc_end_impl(timestamp, time_partitions);
215 send_parallel_old_event();
216 }
217
218 void ParallelOldTracer::report_dense_prefix(void* dense_prefix) {
219 assert_set_gc_id();
220
221 _parallel_old_gc_info.report_dense_prefix(dense_prefix);
222 }
223
224 void OldGCTracer::report_concurrent_mode_failure() {
225 assert_set_gc_id();
226
227 send_concurrent_mode_failure_event();
228 }
229
230 #if INCLUDE_ALL_GCS
231 void G1MMUTracer::report_mmu(const GCId& gcId, double timeSlice, double gcTime, double maxTime) {
232 assert(!gcId.is_undefined(), "Undefined GC id");
233
234 send_g1_mmu_event(gcId, timeSlice, gcTime, maxTime);
235 }
236
237 void G1NewTracer::report_yc_type(G1YCType type) {
238 assert_set_gc_id();
239
240 _g1_young_gc_info.set_type(type);
241 }
242
243 void G1NewTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {
244 assert_set_gc_id();
245
246 YoungGCTracer::report_gc_end_impl(timestamp, time_partitions);
247 send_g1_young_gc_event();
248 }
249
250 void G1NewTracer::report_evacuation_info(EvacuationInfo* info) {
251 assert_set_gc_id();
252
253 send_evacuation_info_event(info);
254 }
255
256 void G1NewTracer::report_evacuation_failed(EvacuationFailedInfo& ef_info) {
257 assert_set_gc_id();
258
259 send_evacuation_failed_event(ef_info);
260 ef_info.reset();
261 }
262
263 void G1NewTracer::report_evacuation_statistics(const G1EvacSummary& young_summary, const G1EvacSummary& old_summary) const {
264 assert_set_gc_id();
265
266 send_young_evacuation_statistics(young_summary);
267 send_old_evacuation_statistics(old_summary);
268 }
269
270 #endif