1 /*
2 * Copyright (c) 2017, 2019, 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/shenandoah/shenandoahCollectorPolicy.hpp"
32 #include "gc/shenandoah/shenandoahMarkCompact.hpp"
33 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
34 #include "gc/shenandoah/shenandoahHeuristics.hpp"
35 #include "gc/shenandoah/shenandoahUtils.hpp"
36 #include "utilities/debug.hpp"
37
38 ShenandoahPhaseTimings::Phase ShenandoahTimingsTracker::_current_phase = ShenandoahPhaseTimings::_invalid_phase;
39
40 ShenandoahGCSession::ShenandoahGCSession(GCCause::Cause cause) :
41 _heap(ShenandoahHeap::heap()),
42 _timer(_heap->gc_timer()),
43 _tracer(_heap->tracer()) {
44 assert(!ShenandoahGCPhase::is_current_phase_valid(), "No current GC phase");
45
46 _heap->set_gc_cause(cause);
47 _timer->register_gc_start();
48 _tracer->report_gc_start(cause, _timer->gc_start());
49 _heap->trace_heap_before_gc(_tracer);
50
51 _heap->shenandoah_policy()->record_cycle_start();
52 _heap->heuristics()->record_cycle_start();
53 _trace_cycle.initialize(_heap->cycle_memory_manager(), cause,
54 /* allMemoryPoolsAffected */ true,
55 /* recordGCBeginTime = */ true,
56 /* recordPreGCUsage = */ true,
57 /* recordPeakUsage = */ true,
58 /* recordPostGCUsage = */ true,
59 /* recordAccumulatedGCTime = */ true,
60 /* recordGCEndTime = */ true,
61 /* countCollection = */ true
62 );
63 }
64
65 ShenandoahGCSession::~ShenandoahGCSession() {
66 _heap->heuristics()->record_cycle_end();
67 _timer->register_gc_end();
68 _heap->trace_heap_after_gc(_tracer);
69 _tracer->report_gc_end(_timer->gc_end(), _timer->time_partitions());
70 assert(!ShenandoahGCPhase::is_current_phase_valid(), "No current GC phase");
71 _heap->set_gc_cause(GCCause::_no_gc);
72 }
73
74 ShenandoahGCPauseMark::ShenandoahGCPauseMark(uint gc_id, SvcGCMarker::reason_type type) :
75 _heap(ShenandoahHeap::heap()), _gc_id_mark(gc_id), _svc_gc_mark(type), _is_gc_active_mark() {
76 _trace_pause.initialize(_heap->stw_memory_manager(), _heap->gc_cause(),
77 /* allMemoryPoolsAffected */ true,
78 /* recordGCBeginTime = */ true,
79 /* recordPreGCUsage = */ false,
80 /* recordPeakUsage = */ false,
81 /* recordPostGCUsage = */ false,
82 /* recordAccumulatedGCTime = */ true,
83 /* recordGCEndTime = */ true,
84 /* countCollection = */ true
85 );
86 }
87
88 ShenandoahPausePhase::ShenandoahPausePhase(const char* title, ShenandoahPhaseTimings::Phase phase, bool log_heap_usage) :
89 ShenandoahTimingsTracker(phase),
90 _tracer(title, NULL, GCCause::_no_gc, log_heap_usage),
91 _timer(ShenandoahHeap::heap()->gc_timer()) {
92 _timer->register_gc_pause_start(title);
93 }
94
95 ShenandoahPausePhase::~ShenandoahPausePhase() {
96 _timer->register_gc_pause_end();
97 }
98
99 ShenandoahConcurrentPhase::ShenandoahConcurrentPhase(const char* title, ShenandoahPhaseTimings::Phase phase, bool log_heap_usage) :
100 ShenandoahTimingsTracker(phase),
101 _tracer(title, NULL, GCCause::_no_gc, log_heap_usage),
102 _timer(ShenandoahHeap::heap()->gc_timer()) {
103 _timer->register_gc_concurrent_start(title);
104 }
105
106 ShenandoahConcurrentPhase::~ShenandoahConcurrentPhase() {
107 _timer->register_gc_concurrent_end();
108 }
109
110 ShenandoahTimingsTracker::ShenandoahTimingsTracker(ShenandoahPhaseTimings::Phase phase) :
111 _timings(ShenandoahHeap::heap()->phase_timings()), _phase(phase) {
112 assert(!Thread::current()->is_Worker_thread() &&
113 (Thread::current()->is_VM_thread() ||
114 Thread::current()->is_ConcurrentGC_thread()),
115 "Must be set by these threads");
116 _parent_phase = _current_phase;
117 _current_phase = phase;
118 _start = os::elapsedTime();
119 }
120
121 ShenandoahTimingsTracker::~ShenandoahTimingsTracker() {
122 _timings->record_phase_time(_phase, os::elapsedTime() - _start);
123 _current_phase = _parent_phase;
124 }
125
126 bool ShenandoahTimingsTracker::is_current_phase_valid() {
127 return _current_phase < ShenandoahPhaseTimings::_num_phases;
128 }
129
130 ShenandoahGCPhase::ShenandoahGCPhase(ShenandoahPhaseTimings::Phase phase) :
131 ShenandoahTimingsTracker(phase),
132 _timer(ShenandoahHeap::heap()->gc_timer()) {
133 _timer->register_gc_phase_start(ShenandoahPhaseTimings::phase_name(phase), Ticks::now());
134 }
135
136 ShenandoahGCPhase::~ShenandoahGCPhase() {
137 _timer->register_gc_phase_end(Ticks::now());
138 }
139
140 ShenandoahGCWorkerPhase::ShenandoahGCWorkerPhase(const ShenandoahPhaseTimings::Phase phase) :
141 _timings(ShenandoahHeap::heap()->phase_timings()), _phase(phase) {
142 _timings->record_workers_start(_phase);
143 }
144
145 ShenandoahGCWorkerPhase::~ShenandoahGCWorkerPhase() {
146 _timings->record_workers_end(_phase);
147 }
148
149 ShenandoahWorkerSession::ShenandoahWorkerSession(uint worker_id) : _worker_id(worker_id) {
150 Thread* thr = Thread::current();
151 assert(ShenandoahThreadLocalData::worker_id(thr) == ShenandoahThreadLocalData::INVALID_WORKER_ID, "Already set");
152 ShenandoahThreadLocalData::set_worker_id(thr, 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(), _worker_id, ShenandoahPhaseTimings::phase_name(ShenandoahGCPhase::current_phase()));
161 }
162 ShenandoahWorkerSession::~ShenandoahWorkerSession() {
163 #ifdef ASSERT
164 Thread* thr = Thread::current();
165 assert(ShenandoahThreadLocalData::worker_id(thr) != ShenandoahThreadLocalData::INVALID_WORKER_ID, "Must be set");
166 ShenandoahThreadLocalData::set_worker_id(thr, ShenandoahThreadLocalData::INVALID_WORKER_ID);
167 #endif
168 }