1 /*
2 * Copyright (c) 2016, 2017, 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 #include "precompiled.hpp"
25 #include "gc/z/zStat.hpp"
26 #include "gc/z/zTracer.hpp"
27 #include "gc/shared/gcId.hpp"
28 #include "gc/shared/gcLocker.hpp"
29 #include "jfr/jfrEvents.hpp"
30 #include "runtime/safepointVerifiers.hpp"
31 #if INCLUDE_JFR
32 #include "jfr/metadata/jfrSerializer.hpp"
33 #endif
34
35 #if INCLUDE_JFR
36 class ZStatisticsCounterTypeConstant : public JfrSerializer {
37 public:
38 virtual void serialize(JfrCheckpointWriter& writer) {
39 writer.write_count(ZStatCounter::count());
40 for (ZStatCounter* counter = ZStatCounter::first(); counter != NULL; counter = counter->next()) {
41 writer.write_key(counter->id());
42 writer.write(counter->name());
43 }
44 }
45 };
46
47 class ZStatisticsSamplerTypeConstant : public JfrSerializer {
48 public:
49 virtual void serialize(JfrCheckpointWriter& writer) {
50 writer.write_count(ZStatSampler::count());
51 for (ZStatSampler* sampler = ZStatSampler::first(); sampler != NULL; sampler = sampler->next()) {
52 writer.write_key(sampler->id());
53 writer.write(sampler->name());
54 }
55 }
56 };
57
58 static void register_jfr_type_serializers() {
59 JfrSerializer::register_serializer(TYPE_ZSTATISTICSCOUNTERTYPE,
60 false /* require_safepoint */,
61 true /* permit_cache */,
62 new ZStatisticsCounterTypeConstant());
63 JfrSerializer::register_serializer(TYPE_ZSTATISTICSSAMPLERTYPE,
64 false /* require_safepoint */,
65 true /* permit_cache */,
66 new ZStatisticsSamplerTypeConstant());
67 }
68 #endif
69
70 ZTracer* ZTracer::_tracer = NULL;
71
72 ZTracer::ZTracer() :
73 GCTracer(Z) {}
74
75 void ZTracer::initialize() {
76 assert(_tracer == NULL, "Already initialized");
77 _tracer = new (ResourceObj::C_HEAP, mtGC) ZTracer();
78 JFR_ONLY(register_jfr_type_serializers());
79 }
80
81 void ZTracer::send_stat_counter(uint32_t counter_id, uint64_t increment, uint64_t value) {
82 NoSafepointVerifier nsv(true, !SafepointSynchronize::is_at_safepoint());
83
84 EventZStatisticsCounter e;
85 if (e.should_commit()) {
86 e.set_id(counter_id);
87 e.set_increment(increment);
88 e.set_value(value);
89 e.commit();
90 }
91 }
92
93 void ZTracer::send_stat_sampler(uint32_t sampler_id, uint64_t value) {
94 NoSafepointVerifier nsv(true, !SafepointSynchronize::is_at_safepoint());
95
96 EventZStatisticsSampler e;
97 if (e.should_commit()) {
98 e.set_id(sampler_id);
99 e.set_value(value);
100 e.commit();
101 }
102 }
103
104 void ZTracer::send_thread_phase(const char* name, const Ticks& start, const Ticks& end) {
105 NoSafepointVerifier nsv(true, !SafepointSynchronize::is_at_safepoint());
106
107 EventZThreadPhase e(UNTIMED);
108 if (e.should_commit()) {
109 e.set_gcId(GCId::current_or_undefined());
110 e.set_name(name);
111 e.set_starttime(start);
112 e.set_endtime(end);
113 e.commit();
114 }
115 }
116
117 void ZTracer::send_page_alloc(size_t size, size_t used, size_t free, size_t cache, bool nonblocking, bool noreserve) {
118 NoSafepointVerifier nsv(true, !SafepointSynchronize::is_at_safepoint());
119
120 EventZPageAllocation e;
121 if (e.should_commit()) {
122 e.set_pageSize(size);
123 e.set_usedAfter(used);
124 e.set_freeAfter(free);
125 e.set_inCacheAfter(cache);
126 e.set_nonBlocking(nonblocking);
127 e.set_noReserve(noreserve);
128 e.commit();
129 }
130 }
131
132 void ZTracer::report_stat_counter(const ZStatCounter& counter, uint64_t increment, uint64_t value) {
133 send_stat_counter(counter.id(), increment, value);
134 }
135
136 void ZTracer::report_stat_sampler(const ZStatSampler& sampler, uint64_t value) {
137 send_stat_sampler(sampler.id(), value);
138 }
139
140 void ZTracer::report_thread_phase(const ZStatPhase& phase, const Ticks& start, const Ticks& end) {
141 send_thread_phase(phase.name(), start, end);
142 }
143
144 void ZTracer::report_thread_phase(const char* name, const Ticks& start, const Ticks& end) {
145 send_thread_phase(name, start, end);
146 }
147
148 void ZTracer::report_page_alloc(size_t size, size_t used, size_t free, size_t cache, ZAllocationFlags flags) {
149 send_page_alloc(size, used, free, cache, flags.non_blocking(), flags.no_reserve());
150 }