1 /*
2 * Copyright (c) 2012, 2013, 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/copyFailedInfo.hpp"
27 #include "gc_implementation/shared/gcHeapSummary.hpp"
28 #include "gc_implementation/shared/gcTimer.hpp"
29 #include "gc_implementation/shared/gcTrace.hpp"
30 #include "gc_implementation/shared/objectCountEventSender.hpp"
31 #include "memory/heapInspection.hpp"
32 #include "memory/referenceProcessorStats.hpp"
33 #include "runtime/os.hpp"
34 #include "utilities/globalDefinitions.hpp"
35
36 #if INCLUDE_ALL_GCS
37 #include "gc_implementation/g1/evacuationInfo.hpp"
38 #endif
39
40 #define assert_unset_gc_id() assert(_shared_gc_info.id() == SharedGCInfo::UNSET_GCID, "GC already started?")
41 #define assert_set_gc_id() assert(_shared_gc_info.id() != SharedGCInfo::UNSET_GCID, "GC not started?")
42
43 static GCId GCTracer_next_gc_id = 0;
44 static GCId create_new_gc_id() {
45 return GCTracer_next_gc_id++;
46 }
47
48 void GCTracer::report_gc_start_impl(GCCause::Cause cause, jlong timestamp) {
49 assert_unset_gc_id();
50
51 GCId gc_id = create_new_gc_id();
52 _shared_gc_info.set_id(gc_id);
53 _shared_gc_info.set_cause(cause);
54 _shared_gc_info.set_start_timestamp(timestamp);
55 }
56
57 void GCTracer::report_gc_start(GCCause::Cause cause, jlong timestamp) {
58 assert_unset_gc_id();
59
60 report_gc_start_impl(cause, timestamp);
61 }
62
63 bool GCTracer::has_reported_gc_start() const {
64 return _shared_gc_info.id() != SharedGCInfo::UNSET_GCID;
65 }
66
67 void GCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
68 assert_set_gc_id();
69
70 _shared_gc_info.set_sum_of_pauses(time_partitions->sum_of_pauses());
71 _shared_gc_info.set_longest_pause(time_partitions->longest_pause());
72 _shared_gc_info.set_end_timestamp(timestamp);
73
74 send_phase_events(time_partitions);
75 send_garbage_collection_event();
76 }
77
78 void GCTracer::report_gc_end(jlong timestamp, TimePartitions* time_partitions) {
79 assert_set_gc_id();
80
81 report_gc_end_impl(timestamp, time_partitions);
82
83 _shared_gc_info.set_id(SharedGCInfo::UNSET_GCID);
84 }
85
86 void GCTracer::report_gc_reference_stats(const ReferenceProcessorStats& rps) const {
87 assert_set_gc_id();
88
89 send_reference_stats_event(REF_SOFT, rps.soft_count());
90 send_reference_stats_event(REF_WEAK, rps.weak_count());
91 send_reference_stats_event(REF_FINAL, rps.final_count());
92 send_reference_stats_event(REF_PHANTOM, rps.phantom_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 jlong _timestamp;
101
102 public:
103 ObjectCountEventSenderClosure(GCId gc_id, size_t total_size_in_words, jlong 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
135 jlong timestamp = os::elapsed_counter();
136 ObjectCountEventSenderClosure event_sender(_shared_gc_info.id(), cit.size_of_instances_in_words(), timestamp);
137 cit.iterate(&event_sender);
138 }
139 }
140 }
141 #endif // INCLUDE_SERVICES
142
143 void GCTracer::report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const MetaspaceSummary& meta_space_summary) const {
144 assert_set_gc_id();
145
146 send_gc_heap_summary_event(when, heap_summary);
147 send_meta_space_summary_event(when, meta_space_summary);
148 }
149
150 void YoungGCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
151 assert_set_gc_id();
152 assert(_tenuring_threshold != UNSET_TENURING_THRESHOLD, "Tenuring threshold has not been reported");
153
154 GCTracer::report_gc_end_impl(timestamp, time_partitions);
155 send_young_gc_event();
156
157 _tenuring_threshold = UNSET_TENURING_THRESHOLD;
158 }
159
160 void YoungGCTracer::report_promotion_failed(const PromotionFailedInfo& pf_info) {
161 assert_set_gc_id();
162
163 send_promotion_failed_event(pf_info);
164 }
165
166 void YoungGCTracer::report_tenuring_threshold(const uint tenuring_threshold) {
167 _tenuring_threshold = tenuring_threshold;
168 }
169
170 void OldGCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
171 assert_set_gc_id();
172
173 GCTracer::report_gc_end_impl(timestamp, time_partitions);
174 send_old_gc_event();
175 }
176
177 void ParallelOldTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
178 assert_set_gc_id();
179
180 OldGCTracer::report_gc_end_impl(timestamp, time_partitions);
181 send_parallel_old_event();
182 }
183
184 void ParallelOldTracer::report_dense_prefix(void* dense_prefix) {
185 assert_set_gc_id();
186
187 _parallel_old_gc_info.report_dense_prefix(dense_prefix);
188 }
189
190 void OldGCTracer::report_concurrent_mode_failure() {
191 assert_set_gc_id();
192
193 send_concurrent_mode_failure_event();
194 }
195
196 #if INCLUDE_ALL_GCS
197 void G1NewTracer::report_yc_type(G1YCType type) {
198 assert_set_gc_id();
199
200 _g1_young_gc_info.set_type(type);
201 }
202
203 void G1NewTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
204 assert_set_gc_id();
205
206 YoungGCTracer::report_gc_end_impl(timestamp, time_partitions);
207 send_g1_young_gc_event();
208 }
209
210 void G1NewTracer::report_evacuation_info(EvacuationInfo* info) {
211 assert_set_gc_id();
212
213 send_evacuation_info_event(info);
214 }
215
216 void G1NewTracer::report_evacuation_failed(EvacuationFailedInfo& ef_info) {
217 assert_set_gc_id();
218
219 send_evacuation_failed_event(ef_info);
220 ef_info.reset();
221 }
222 #endif