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/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/referenceProcessorStats.hpp"
32 #include "utilities/globalDefinitions.hpp"
33
34 #ifndef SERIALGC
35 #include "gc_implementation/g1/evacuationInfo.hpp"
36 #endif
37
38 #define assert_unset_gc_id() assert(_shared_gc_info.id() == SharedGCInfo::UNSET_GCID, "GC already started?")
39 #define assert_set_gc_id() assert(_shared_gc_info.id() != SharedGCInfo::UNSET_GCID, "GC not started?")
40
41 static jlong GCTracer_next_gc_id = 0;
42 static GCId create_new_gc_id() {
43 return GCTracer_next_gc_id++;
44 }
45
46 void GCTracer::report_gc_start_impl(GCCause::Cause cause, jlong timestamp) {
47 assert_unset_gc_id();
48
49 GCId gc_id = create_new_gc_id();
50 _shared_gc_info.set_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, jlong 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.id() != SharedGCInfo::UNSET_GCID;
63 }
64
65 void GCTracer::report_gc_end_impl(jlong 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(jlong timestamp, TimePartitions* time_partitions) {
77 assert_set_gc_id();
78
79 report_gc_end_impl(timestamp, time_partitions);
80
81 _shared_gc_info.set_id(SharedGCInfo::UNSET_GCID);
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 }
92
93 #if INCLUDE_SERVICES
94 void ObjectCountEventSenderClosure::do_cinfo(KlassInfoEntry* entry) {
95 if (should_send_event(entry)) {
96 send_event(entry);
97 }
98 }
99
100 void ObjectCountEventSenderClosure::send_event(KlassInfoEntry* entry) {
101 _gc_tracer->send_object_count_after_gc_event(entry->klass(), entry->count(),
102 entry->words() * BytesPerWord);
103 }
104
105 bool ObjectCountEventSenderClosure::should_send_event(KlassInfoEntry* entry) const {
106 double percentage_of_heap = ((double) entry->words()) / _total_size_in_words;
107 return percentage_of_heap > _size_threshold_percentage;
108 }
109
110 void GCTracer::report_object_count_after_gc(BoolObjectClosure* is_alive_cl) {
111 assert_set_gc_id();
112
113 if (should_send_object_count_after_gc_event()) {
114 ResourceMark rm;
115
116 KlassInfoTable cit(false);
117 if (!cit.allocation_failed()) {
118 HeapInspection hi(false, false, false, NULL);
119 hi.populate_table(&cit, is_alive_cl);
120
121 ObjectCountEventSenderClosure event_sender(this, cit.size_of_instances_in_words());
122 cit.iterate(&event_sender);
123 }
124 }
125 }
126 #endif
127
128 void GCTracer::report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const MetaspaceSummary& meta_space_summary) const {
129 assert_set_gc_id();
130
131 send_gc_heap_summary_event(when, heap_summary);
132 send_meta_space_summary_event(when, meta_space_summary);
133 }
134
135 void YoungGCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
136 assert_set_gc_id();
137 assert(_tenuring_threshold != UNSET_TENURING_THRESHOLD, "Tenuring threshold has not been reported");
138
139 GCTracer::report_gc_end_impl(timestamp, time_partitions);
140 send_young_gc_event();
141
142 _tenuring_threshold = UNSET_TENURING_THRESHOLD;
143 }
144
145 void YoungGCTracer::report_promotion_failed(const PromotionFailedInfo& pf_info) {
146 assert_set_gc_id();
147
148 send_promotion_failed_event(pf_info);
149 }
150
151 void YoungGCTracer::report_tenuring_threshold(const uint tenuring_threshold) {
152 _tenuring_threshold = tenuring_threshold;
153 }
154
155 void OldGCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
156 assert_set_gc_id();
157
158 GCTracer::report_gc_end_impl(timestamp, time_partitions);
159 send_old_gc_event();
160 }
161
162 void ParallelOldTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
163 assert_set_gc_id();
164
165 OldGCTracer::report_gc_end_impl(timestamp, time_partitions);
166 send_parallel_old_event();
167 }
168
169 void ParallelOldTracer::report_dense_prefix(void* dense_prefix) {
170 assert_set_gc_id();
171
172 _parallel_old_gc_info.report_dense_prefix(dense_prefix);
173 }
174
175 void OldGCTracer::report_concurrent_mode_failure() {
176 assert_set_gc_id();
177
178 send_concurrent_mode_failure_event();
179 }
180
181 #ifndef SERIALGC
182 void G1NewTracer::report_yc_type(G1YCType type) {
183 assert_set_gc_id();
184
185 _g1_young_gc_info.set_type(type);
186 }
187
188 void G1NewTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
189 assert_set_gc_id();
190
191 YoungGCTracer::report_gc_end_impl(timestamp, time_partitions);
192 send_g1_young_gc_event();
193 }
194
195 void G1NewTracer::report_evacuation_info(EvacuationInfo* info) {
196 assert_set_gc_id();
197
198 send_evacuation_info_event(info);
199 }
200
201 void G1NewTracer::report_evacuation_failed(EvacuationFailedInfo& ef_info) {
202 assert_set_gc_id();
203
204 send_evacuation_failed_event(ef_info);
205 ef_info.reset();
206 }
207 #endif