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/shenandoahGeneration.hpp"
35 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
36 #include "gc/shenandoah/shenandoahReferenceProcessor.hpp"
37 #include "gc/shenandoah/shenandoahUtils.hpp"
38 #include "utilities/debug.hpp"
39
40 ShenandoahPhaseTimings::Phase ShenandoahTimingsTracker::_current_phase = ShenandoahPhaseTimings::_invalid_phase;
41
42 ShenandoahGCSession::ShenandoahGCSession(GCCause::Cause cause, ShenandoahGeneration* generation) :
43 _heap(ShenandoahHeap::heap()),
44 _generation(generation),
45 _timer(_heap->gc_timer()),
46 _tracer(_heap->tracer()) {
47 assert(!ShenandoahGCPhase::is_current_phase_valid(), "No current GC phase");
48
49 _heap->set_gc_cause(cause);
50 _heap->set_gc_generation(generation);
51 _timer->register_gc_start();
52 _tracer->report_gc_start(cause, _timer->gc_start());
53 _heap->trace_heap_before_gc(_tracer);
54
55 _heap->shenandoah_policy()->record_cycle_start();
56 generation->heuristics()->record_cycle_start();
57 _trace_cycle.initialize(_heap->cycle_memory_manager(), cause,
58 /* allMemoryPoolsAffected */ true,
59 /* recordGCBeginTime = */ true,
60 /* recordPreGCUsage = */ true,
61 /* recordPeakUsage = */ true,
62 /* recordPostGCUsage = */ true,
63 /* recordAccumulatedGCTime = */ true,
64 /* recordGCEndTime = */ true,
65 /* countCollection = */ true
66 );
67 }
68
69
70 ShenandoahGCSession::~ShenandoahGCSession() {
71 _generation->heuristics()->record_cycle_end();
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 _heap->set_gc_cause(GCCause::_no_gc);
78 }
79
80 ShenandoahGCPauseMark::ShenandoahGCPauseMark(uint gc_id, SvcGCMarker::reason_type type) :
81 _heap(ShenandoahHeap::heap()), _gc_id_mark(gc_id), _svc_gc_mark(type), _is_gc_active_mark() {
82 _trace_pause.initialize(_heap->stw_memory_manager(), _heap->gc_cause(),
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, NULL, 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, NULL, 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_Worker_thread() &&
119 (Thread::current()->is_VM_thread() ||
120 Thread::current()->is_ConcurrentGC_thread()),
121 "Must be set by these threads");
122 _parent_phase = _current_phase;
123 _current_phase = phase;
124 _start = os::elapsedTime();
125 }
126
127 ShenandoahTimingsTracker::~ShenandoahTimingsTracker() {
128 _timings->record_phase_time(_phase, os::elapsedTime() - _start);
129 _current_phase = _parent_phase;
130 }
131
132 bool ShenandoahTimingsTracker::is_current_phase_valid() {
133 return _current_phase < ShenandoahPhaseTimings::_num_phases;
134 }
135
136 ShenandoahGCPhase::ShenandoahGCPhase(ShenandoahPhaseTimings::Phase phase) :
137 ShenandoahTimingsTracker(phase),
138 _timer(ShenandoahHeap::heap()->gc_timer()) {
139 _timer->register_gc_phase_start(ShenandoahPhaseTimings::phase_name(phase), Ticks::now());
140 }
141
142 ShenandoahGCPhase::~ShenandoahGCPhase() {
143 _timer->register_gc_phase_end(Ticks::now());
144 }
145
146 ShenandoahGCWorkerPhase::ShenandoahGCWorkerPhase(const ShenandoahPhaseTimings::Phase phase) :
147 _timings(ShenandoahHeap::heap()->phase_timings()), _phase(phase) {
148 _timings->record_workers_start(_phase);
149 }
150
151 ShenandoahGCWorkerPhase::~ShenandoahGCWorkerPhase() {
152 _timings->record_workers_end(_phase);
153 }
154
155 ShenandoahWorkerSession::ShenandoahWorkerSession(uint worker_id) : _worker_id(worker_id) {
156 Thread* thr = Thread::current();
157 assert(ShenandoahThreadLocalData::worker_id(thr) == ShenandoahThreadLocalData::INVALID_WORKER_ID, "Already set");
158 ShenandoahThreadLocalData::set_worker_id(thr, worker_id);
159 }
160
161 ShenandoahConcurrentWorkerSession::~ShenandoahConcurrentWorkerSession() {
162 _event.commit(GCId::current(), ShenandoahPhaseTimings::phase_name(ShenandoahGCPhase::current_phase()));
163 }
164
165 ShenandoahParallelWorkerSession::~ShenandoahParallelWorkerSession() {
166 _event.commit(GCId::current(), _worker_id, ShenandoahPhaseTimings::phase_name(ShenandoahGCPhase::current_phase()));
167 }
168 ShenandoahWorkerSession::~ShenandoahWorkerSession() {
169 #ifdef ASSERT
170 Thread* thr = Thread::current();
171 assert(ShenandoahThreadLocalData::worker_id(thr) != ShenandoahThreadLocalData::INVALID_WORKER_ID, "Must be set");
172 ShenandoahThreadLocalData::set_worker_id(thr, ShenandoahThreadLocalData::INVALID_WORKER_ID);
173 #endif
174 }