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 "utilities/globalDefinitions.hpp"
34
35 #if INCLUDE_ALL_GCS
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 #if INCLUDE_SERVICES
95 class ObjectCountEventSenderClosure : public KlassInfoClosure {
96 const GCId _gc_id;
97 const double _size_threshold_percentage;
98 const size_t _total_size_in_words;
99
100 public:
101 ObjectCountEventSenderClosure(GCId gc_id, size_t total_size_in_words) :
102 _gc_id(gc_id),
103 _size_threshold_percentage(ObjectCountCutOffPercent / 100),
104 _total_size_in_words(total_size_in_words)
105 {}
106
107 virtual void do_cinfo(KlassInfoEntry* entry) {
108 if (should_send_event(entry)) {
109 ObjectCountEventSender::send(entry, _gc_id);
110 }
111 }
112
113 private:
114 bool should_send_event(const KlassInfoEntry* entry) const {
115 double percentage_of_heap = ((double) entry->words()) / _total_size_in_words;
116 return percentage_of_heap >= _size_threshold_percentage;
117 }
118 };
119
120 void GCTracer::report_object_count_after_gc(BoolObjectClosure* is_alive_cl) {
121 assert_set_gc_id();
122 assert(is_alive_cl != NULL, "Must supply function to check liveness");
123
124 if (ObjectCountEventSender::should_send_event()) {
125 ResourceMark rm;
126
127 KlassInfoTable cit(false);
128 if (!cit.allocation_failed()) {
129 HeapInspection hi(false, false, false, NULL);
130 hi.populate_table(&cit, is_alive_cl);
131
132 ObjectCountEventSenderClosure event_sender(_shared_gc_info.id(), cit.size_of_instances_in_words());
133 cit.iterate(&event_sender);
134 }
135 }
136 }
137 #endif // INCLUDE_SERVICES
138
139 void GCTracer::report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const MetaspaceSummary& meta_space_summary) const {
140 assert_set_gc_id();
141
142 send_gc_heap_summary_event(when, heap_summary);
143 send_meta_space_summary_event(when, meta_space_summary);
144 }
145
146 void YoungGCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
147 assert_set_gc_id();
148 assert(_tenuring_threshold != UNSET_TENURING_THRESHOLD, "Tenuring threshold has not been reported");
149
150 GCTracer::report_gc_end_impl(timestamp, time_partitions);
151 send_young_gc_event();
152
153 _tenuring_threshold = UNSET_TENURING_THRESHOLD;
154 }
155
156 void YoungGCTracer::report_promotion_failed(const PromotionFailedInfo& pf_info) {
157 assert_set_gc_id();
158
159 send_promotion_failed_event(pf_info);
160 }
161
162 void YoungGCTracer::report_tenuring_threshold(const uint tenuring_threshold) {
163 _tenuring_threshold = tenuring_threshold;
164 }
165
166 void OldGCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
167 assert_set_gc_id();
168
169 GCTracer::report_gc_end_impl(timestamp, time_partitions);
170 send_old_gc_event();
171 }
172
173 void ParallelOldTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
174 assert_set_gc_id();
175
176 OldGCTracer::report_gc_end_impl(timestamp, time_partitions);
177 send_parallel_old_event();
178 }
179
180 void ParallelOldTracer::report_dense_prefix(void* dense_prefix) {
181 assert_set_gc_id();
182
183 _parallel_old_gc_info.report_dense_prefix(dense_prefix);
184 }
185
186 void OldGCTracer::report_concurrent_mode_failure() {
187 assert_set_gc_id();
188
189 send_concurrent_mode_failure_event();
190 }
191
192 #if INCLUDE_ALL_GCS
193 void G1NewTracer::report_yc_type(G1YCType type) {
194 assert_set_gc_id();
195
196 _g1_young_gc_info.set_type(type);
197 }
198
199 void G1NewTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
200 assert_set_gc_id();
201
202 YoungGCTracer::report_gc_end_impl(timestamp, time_partitions);
203 send_g1_young_gc_event();
204 }
205
206 void G1NewTracer::report_evacuation_info(EvacuationInfo* info) {
207 assert_set_gc_id();
208
209 send_evacuation_info_event(info);
210 }
211
212 void G1NewTracer::report_evacuation_failed(EvacuationFailedInfo& ef_info) {
213 assert_set_gc_id();
214
215 send_evacuation_failed_event(ef_info);
216 ef_info.reset();
217 }
218 #endif