1 /*
2 * Copyright (c) 2012, 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/promotionFailedInfo.hpp"
30 #include "memory/heapInspection.hpp"
31 #include "memory/iterator.hpp"
32 #include "memory/referenceProcessorStats.hpp"
33 #include "utilities/globalDefinitions.hpp"
34
35 #define assert_unset_gc_id() assert(_shared_gc_info.id() == SharedGCInfo::UNSET_GCID, "GC already started?")
36 #define assert_set_gc_id() assert(_shared_gc_info.id() != SharedGCInfo::UNSET_GCID, "GC not started?")
37
38 static jlong GCTracer_next_gc_id = 0;
39 static GCId create_new_gc_id() {
40 return GCTracer_next_gc_id++;
41 }
42
43 void GCTracer::report_gc_start_impl(GCCause::Cause cause, jlong timestamp) {
44 assert_unset_gc_id();
45
46 GCId gc_id = create_new_gc_id();
47 _shared_gc_info.set_id(gc_id);
48 _shared_gc_info.set_cause(cause);
49 _shared_gc_info.set_start_timestamp(timestamp);
50 }
51
52 void GCTracer::report_gc_start(GCCause::Cause cause, jlong timestamp) {
53 assert_unset_gc_id();
54
55 report_gc_start_impl(cause, timestamp);
56 }
57
58 bool GCTracer::has_reported_gc_start() const {
59 return _shared_gc_info.id() != SharedGCInfo::UNSET_GCID;
60 }
61
62 void GCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
63 assert_set_gc_id();
64
65 _shared_gc_info.set_sum_of_pauses(time_partitions->sum_of_pauses());
66 _shared_gc_info.set_longest_pause(time_partitions->longest_pause());
67 _shared_gc_info.set_end_timestamp(timestamp);
68
69 send_phase_events(time_partitions);
70 send_garbage_collection_event();
71 }
72
73 void GCTracer::report_gc_end(jlong timestamp, TimePartitions* time_partitions) {
74 assert_set_gc_id();
75
76 report_gc_end_impl(timestamp, time_partitions);
77
78 _shared_gc_info.set_id(SharedGCInfo::UNSET_GCID);
79 }
80
81 void GCTracer::report_gc_reference_stats(const ReferenceProcessorStats& rps) const {
82 assert_set_gc_id();
83
84 send_reference_stats_event(REF_SOFT, rps.soft_count());
85 send_reference_stats_event(REF_WEAK, rps.weak_count());
86 send_reference_stats_event(REF_FINAL, rps.final_count());
87 send_reference_stats_event(REF_PHANTOM, rps.phantom_count());
88 }
89
90 class ObjectCountEventSenderClosure : public KlassInfoClosure {
91 GCTracer* _gc_tracer;
92 public:
93 ObjectCountEventSenderClosure(GCTracer* gc_tracer) : _gc_tracer(gc_tracer) {}
94 private:
95 void do_cinfo(KlassInfoEntry* entry) {
96 _gc_tracer->send_object_count_after_gc_event(entry->klass(), entry->count(),
97 entry->words() * BytesPerWord);
98 }
99 };
100
101 void GCTracer::report_object_count_after_gc(BoolObjectClosure *is_alive_cl) {
102 if (should_send_object_count_after_gc_event()) {
103 ResourceMark rm;
104
105 KlassInfoTable cit(HeapInspection::start_of_perm_gen());
106 if (!cit.allocation_failed()) {
107 ObjectCountEventSenderClosure event_sender(this);
108 HeapInspection::instance_inspection(&cit, &event_sender, false, is_alive_cl);
109 }
110 }
111 }
112
113 void GCTracer::report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const PermGenSummary& perm_gen_summary) const {
114 assert_set_gc_id();
115
116 send_gc_heap_summary_event(when, heap_summary);
117 send_perm_gen_summary_event(when, perm_gen_summary);
118 }
119
120 void YoungGCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
121 assert_set_gc_id();
122
123 GCTracer::report_gc_end_impl(timestamp, time_partitions);
124 send_young_gc_event();
125 }
126
127 void YoungGCTracer::report_promotion_failed(const PromotionFailedInfo& pf_info) {
128 assert_set_gc_id();
129
130 send_promotion_failed_event(pf_info);
131 }
132
133
134 void OldGCTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
135 assert_set_gc_id();
136
137 GCTracer::report_gc_end_impl(timestamp, time_partitions);
138 send_old_gc_event();
139 }
140
141 void ParallelOldTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
142 assert_set_gc_id();
143
144 OldGCTracer::report_gc_end_impl(timestamp, time_partitions);
145 send_parallel_old_event();
146 }
147
148 void ParallelOldTracer::report_dense_prefix(void* dense_prefix) {
149 assert_set_gc_id();
150
151 _parallel_old_gc_info.report_dense_prefix(dense_prefix);
152 }
153
154 #ifndef SERIALGC
155 void G1NewTracer::report_yc_type(G1YCType type) {
156 assert_set_gc_id();
157
158 _g1_young_gc_info.set_type(type);
159 }
160
161 void G1NewTracer::report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions) {
162 assert_set_gc_id();
163
164 YoungGCTracer::report_gc_end_impl(timestamp, time_partitions);
165 send_g1_young_gc_event();
166 }
167 #endif