1 /*
2 * Copyright (c) 2017, 2021, Red Hat, Inc. All rights reserved.
3 * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27
28 #include "jfr/jfrEvents.hpp"
29 #include "gc/shared/gcCause.hpp"
30 #include "gc/shared/gcTrace.hpp"
31 #include "gc/shared/gcWhen.hpp"
32 #include "gc/shared/referenceProcessorStats.hpp"
33 #include "gc/shenandoah/heuristics/shenandoahHeuristics.hpp"
34 #include "gc/shenandoah/shenandoahCollectorPolicy.hpp"
35 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
36 #include "gc/shenandoah/shenandoahOldGeneration.hpp"
37 #include "gc/shenandoah/shenandoahReferenceProcessor.hpp"
38 #include "gc/shenandoah/shenandoahUtils.hpp"
39 #include "gc/shenandoah/shenandoahYoungGeneration.hpp"
40 #include "utilities/debug.hpp"
41
42 ShenandoahPhaseTimings::Phase ShenandoahTimingsTracker::_current_phase = ShenandoahPhaseTimings::_invalid_phase;
43
44 ShenandoahGCSession::ShenandoahGCSession(GCCause::Cause cause, ShenandoahGeneration* generation) :
45 _heap(ShenandoahHeap::heap()),
46 _generation(generation),
47 _timer(_heap->gc_timer()),
48 _tracer(_heap->tracer()) {
49 assert(!ShenandoahGCPhase::is_current_phase_valid(), "No current GC phase");
50
51 _heap->on_cycle_start(cause, _generation);
52
53 _timer->register_gc_start();
54 _tracer->report_gc_start(cause, _timer->gc_start());
55 _heap->trace_heap_before_gc(_tracer);
56
57 _trace_cycle.initialize(_heap->cycle_memory_manager(), cause,
58 "end of GC cycle",
59 /* allMemoryPoolsAffected */ true,
60 /* recordGCBeginTime = */ true,
61 /* recordPreGCUsage = */ true,
62 /* recordPeakUsage = */ true,
63 /* recordPostGCUsage = */ true,
64 /* recordAccumulatedGCTime = */ true,
65 /* recordGCEndTime = */ true,
66 /* countCollection = */ true
67 );
68 }
69
70 ShenandoahGCSession::~ShenandoahGCSession() {
71 _heap->on_cycle_end(_generation);
72 _timer->register_gc_end();
73 _heap->trace_heap_after_gc(_tracer);
74 _tracer->report_gc_reference_stats(_generation->ref_processor()->reference_process_stats());
75 _tracer->report_gc_end(_timer->gc_end(), _timer->time_partitions());
76 assert(!ShenandoahGCPhase::is_current_phase_valid(), "No current GC phase");
77 }
78
79 ShenandoahGCPauseMark::ShenandoahGCPauseMark(uint gc_id, const char* notification_message, SvcGCMarker::reason_type type) :
80 _heap(ShenandoahHeap::heap()), _gc_id_mark(gc_id), _svc_gc_mark(type), _is_gc_active_mark() {
81 _trace_pause.initialize(_heap->stw_memory_manager(), _heap->gc_cause(),
82 notification_message,
83 /* allMemoryPoolsAffected */ true,
84 /* recordGCBeginTime = */ true,
85 /* recordPreGCUsage = */ false,
86 /* recordPeakUsage = */ false,
87 /* recordPostGCUsage = */ false,
88 /* recordAccumulatedGCTime = */ true,
89 /* recordGCEndTime = */ true,
90 /* countCollection = */ true
91 );
92 }
93
94 ShenandoahPausePhase::ShenandoahPausePhase(const char* title, ShenandoahPhaseTimings::Phase phase, bool log_heap_usage) :
95 ShenandoahTimingsTracker(phase),
96 _tracer(title, nullptr, GCCause::_no_gc, log_heap_usage),
97 _timer(ShenandoahHeap::heap()->gc_timer()) {
98 _timer->register_gc_pause_start(title);
99 }
100
101 ShenandoahPausePhase::~ShenandoahPausePhase() {
102 _timer->register_gc_pause_end();
103 }
104
105 ShenandoahConcurrentPhase::ShenandoahConcurrentPhase(const char* title, ShenandoahPhaseTimings::Phase phase, bool log_heap_usage) :
106 ShenandoahTimingsTracker(phase),
107 _tracer(title, nullptr, GCCause::_no_gc, log_heap_usage),
108 _timer(ShenandoahHeap::heap()->gc_timer()) {
109 _timer->register_gc_concurrent_start(title);
110 }
111
112 ShenandoahConcurrentPhase::~ShenandoahConcurrentPhase() {
113 _timer->register_gc_concurrent_end();
114 }
115
116 ShenandoahTimingsTracker::ShenandoahTimingsTracker(ShenandoahPhaseTimings::Phase phase) :
117 _timings(ShenandoahHeap::heap()->phase_timings()), _phase(phase) {
118 assert(Thread::current()->is_VM_thread() || Thread::current()->is_ConcurrentGC_thread(),
119 "Must be set by these threads");
120 _parent_phase = _current_phase;
121 _current_phase = phase;
122 _start = os::elapsedTime();
123 }
124
125 ShenandoahTimingsTracker::~ShenandoahTimingsTracker() {
126 _timings->record_phase_time(_phase, os::elapsedTime() - _start);
127 _current_phase = _parent_phase;
128 }
129
130 bool ShenandoahTimingsTracker::is_current_phase_valid() {
131 return _current_phase < ShenandoahPhaseTimings::_num_phases;
132 }
133
134 ShenandoahGCPhase::ShenandoahGCPhase(ShenandoahPhaseTimings::Phase phase) :
135 ShenandoahTimingsTracker(phase),
136 _timer(ShenandoahHeap::heap()->gc_timer()) {
137 _timer->register_gc_phase_start(ShenandoahPhaseTimings::phase_name(phase), Ticks::now());
138 }
139
140 ShenandoahGCPhase::~ShenandoahGCPhase() {
141 _timer->register_gc_phase_end(Ticks::now());
142 }
143
144 ShenandoahGCWorkerPhase::ShenandoahGCWorkerPhase(const ShenandoahPhaseTimings::Phase phase) :
145 _timings(ShenandoahHeap::heap()->phase_timings()), _phase(phase) {
146 _timings->record_workers_start(_phase);
147 }
148
149 ShenandoahGCWorkerPhase::~ShenandoahGCWorkerPhase() {
150 _timings->record_workers_end(_phase);
151 }
152
153 ShenandoahWorkerSession::ShenandoahWorkerSession(uint worker_id) {
154 assert(worker_id == WorkerThread::worker_id(), "Wrong worker id");
155 }
156
157 ShenandoahConcurrentWorkerSession::~ShenandoahConcurrentWorkerSession() {
158 _event.commit(GCId::current(), ShenandoahPhaseTimings::phase_name(ShenandoahGCPhase::current_phase()));
159 }
160
161 ShenandoahParallelWorkerSession::~ShenandoahParallelWorkerSession() {
162 _event.commit(GCId::current(), WorkerThread::worker_id(), ShenandoahPhaseTimings::phase_name(ShenandoahGCPhase::current_phase()));
163 }