1 /*
2 * Copyright (c) 2017, 2021, Red Hat, Inc. 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
27 #include "jfr/jfrEvents.hpp"
28 #include "gc/shared/gcCause.hpp"
29 #include "gc/shared/gcTrace.hpp"
30 #include "gc/shared/gcWhen.hpp"
31 #include "gc/shared/referenceProcessorStats.hpp"
32 #include "gc/shenandoah/heuristics/shenandoahHeuristics.hpp"
33 #include "gc/shenandoah/shenandoahCollectorPolicy.hpp"
34 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
35 #include "gc/shenandoah/shenandoahReferenceProcessor.hpp"
36 #include "gc/shenandoah/shenandoahUtils.hpp"
37 #include "utilities/debug.hpp"
38
39 ShenandoahPhaseTimings::Phase ShenandoahTimingsTracker::_current_phase = ShenandoahPhaseTimings::_invalid_phase;
40
41 ShenandoahGCSession::ShenandoahGCSession(GCCause::Cause cause) :
42 _heap(ShenandoahHeap::heap()),
43 _timer(_heap->gc_timer()),
44 _tracer(_heap->tracer()) {
45 assert(!ShenandoahGCPhase::is_current_phase_valid(), "No current GC phase");
46
47 _heap->set_gc_cause(cause);
48 _timer->register_gc_start();
49 _tracer->report_gc_start(cause, _timer->gc_start());
50 _heap->trace_heap_before_gc(_tracer);
51
52 _heap->shenandoah_policy()->record_cycle_start();
53 _heap->heuristics()->record_cycle_start();
54 _trace_cycle.initialize(_heap->cycle_memory_manager(), cause,
55 "end of GC cycle",
56 /* allMemoryPoolsAffected */ true,
57 /* recordGCBeginTime = */ true,
58 /* recordPreGCUsage = */ true,
59 /* recordPeakUsage = */ true,
60 /* recordPostGCUsage = */ true,
61 /* recordAccumulatedGCTime = */ true,
62 /* recordGCEndTime = */ true,
63 /* countCollection = */ true
64 );
65 }
66
67 ShenandoahGCSession::~ShenandoahGCSession() {
68 _heap->heuristics()->record_cycle_end();
69 _timer->register_gc_end();
70 _heap->trace_heap_after_gc(_tracer);
71 _tracer->report_gc_reference_stats(_heap->ref_processor()->reference_process_stats());
72 _tracer->report_gc_end(_timer->gc_end(), _timer->time_partitions());
73 assert(!ShenandoahGCPhase::is_current_phase_valid(), "No current GC phase");
74 _heap->set_gc_cause(GCCause::_no_gc);
75 }
76
77 ShenandoahGCPauseMark::ShenandoahGCPauseMark(uint gc_id, const char* notification_message, SvcGCMarker::reason_type type) :
78 _heap(ShenandoahHeap::heap()), _gc_id_mark(gc_id), _svc_gc_mark(type), _is_gc_active_mark() {
79 _trace_pause.initialize(_heap->stw_memory_manager(), _heap->gc_cause(),
80 notification_message,
81 /* allMemoryPoolsAffected */ true,
82 /* recordGCBeginTime = */ true,
83 /* recordPreGCUsage = */ false,
84 /* recordPeakUsage = */ false,
85 /* recordPostGCUsage = */ false,
86 /* recordAccumulatedGCTime = */ true,
87 /* recordGCEndTime = */ true,
88 /* countCollection = */ true
89 );
90 }
91
92 ShenandoahPausePhase::ShenandoahPausePhase(const char* title, ShenandoahPhaseTimings::Phase phase, bool log_heap_usage) :
93 ShenandoahTimingsTracker(phase),
94 _tracer(title, nullptr, GCCause::_no_gc, log_heap_usage),
95 _timer(ShenandoahHeap::heap()->gc_timer()) {
96 _timer->register_gc_pause_start(title);
97 }
98
99 ShenandoahPausePhase::~ShenandoahPausePhase() {
100 _timer->register_gc_pause_end();
101 }
102
103 ShenandoahConcurrentPhase::ShenandoahConcurrentPhase(const char* title, ShenandoahPhaseTimings::Phase phase, bool log_heap_usage) :
104 ShenandoahTimingsTracker(phase),
105 _tracer(title, nullptr, GCCause::_no_gc, log_heap_usage),
106 _timer(ShenandoahHeap::heap()->gc_timer()) {
107 _timer->register_gc_concurrent_start(title);
108 }
109
110 ShenandoahConcurrentPhase::~ShenandoahConcurrentPhase() {
111 _timer->register_gc_concurrent_end();
112 }
113
114 ShenandoahTimingsTracker::ShenandoahTimingsTracker(ShenandoahPhaseTimings::Phase phase) :
115 _timings(ShenandoahHeap::heap()->phase_timings()), _phase(phase) {
116 assert(Thread::current()->is_VM_thread() || Thread::current()->is_ConcurrentGC_thread(),
117 "Must be set by these threads");
118 _parent_phase = _current_phase;
119 _current_phase = phase;
120 _start = os::elapsedTime();
121 }
122
123 ShenandoahTimingsTracker::~ShenandoahTimingsTracker() {
124 _timings->record_phase_time(_phase, os::elapsedTime() - _start);
125 _current_phase = _parent_phase;
126 }
127
128 bool ShenandoahTimingsTracker::is_current_phase_valid() {
129 return _current_phase < ShenandoahPhaseTimings::_num_phases;
130 }
131
132 ShenandoahGCPhase::ShenandoahGCPhase(ShenandoahPhaseTimings::Phase phase) :
133 ShenandoahTimingsTracker(phase),
134 _timer(ShenandoahHeap::heap()->gc_timer()) {
135 _timer->register_gc_phase_start(ShenandoahPhaseTimings::phase_name(phase), Ticks::now());
136 }
137
138 ShenandoahGCPhase::~ShenandoahGCPhase() {
139 _timer->register_gc_phase_end(Ticks::now());
140 }
141
142 ShenandoahGCWorkerPhase::ShenandoahGCWorkerPhase(const ShenandoahPhaseTimings::Phase phase) :
143 _timings(ShenandoahHeap::heap()->phase_timings()), _phase(phase) {
144 _timings->record_workers_start(_phase);
145 }
146
147 ShenandoahGCWorkerPhase::~ShenandoahGCWorkerPhase() {
148 _timings->record_workers_end(_phase);
149 }
150
151 ShenandoahWorkerSession::ShenandoahWorkerSession(uint worker_id) {
152 assert(worker_id == WorkerThread::worker_id(), "Wrong worker id");
153 }
154
155 ShenandoahConcurrentWorkerSession::~ShenandoahConcurrentWorkerSession() {
156 _event.commit(GCId::current(), ShenandoahPhaseTimings::phase_name(ShenandoahGCPhase::current_phase()));
157 }
158
159 ShenandoahParallelWorkerSession::~ShenandoahParallelWorkerSession() {
160 _event.commit(GCId::current(), WorkerThread::worker_id(), ShenandoahPhaseTimings::phase_name(ShenandoahGCPhase::current_phase()));
161 }