1 /*
2 * Copyright (c) 2015, 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 #include "gc/shared/collectorCounters.hpp"
27 #include "gc/shared/generationCounters.hpp"
28 #include "gc/shared/hSpaceCounters.hpp"
29 #include "gc/shenandoah/shenandoahMonitoringSupport.hpp"
30 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
31 #include "gc/shenandoah/shenandoahHeapRegionCounters.hpp"
32 #include "memory/metaspaceCounters.hpp"
33 #include "services/memoryService.hpp"
34
35 class ShenandoahYoungGenerationCounters : public GenerationCounters {
36 public:
37 ShenandoahYoungGenerationCounters() :
38 GenerationCounters("Young", 0, 0, 0, (size_t)0, (size_t)0) {};
39
40 void update_all() override {
41 // no update
42 }
43 };
44
45 class ShenandoahGenerationCounters : public GenerationCounters {
46 private:
47 ShenandoahHeap* _heap;
48 public:
49 explicit ShenandoahGenerationCounters(ShenandoahHeap* heap) :
50 GenerationCounters("Heap", 1, 1, heap->initial_capacity(), heap->max_capacity(), heap->capacity()),
51 _heap(heap)
52 {};
53
54 void update_all() override {
55 _current_size->set_value(_heap->capacity());
56 }
57 };
58
59 ShenandoahMonitoringSupport::ShenandoahMonitoringSupport(ShenandoahHeap* heap) :
60 _partial_counters(nullptr),
61 _full_counters(nullptr),
62 _counters_update_task(this)
63 {
64 // Collection counters do not fit Shenandoah very well.
65 // We record partial cycles as "young", and full cycles (including full STW GC) as "old".
66 _partial_counters = new CollectorCounters("Shenandoah partial", 0);
67 _full_counters = new CollectorCounters("Shenandoah full", 1);
68
69 // We report young gen as unused.
70 _young_counters = new ShenandoahYoungGenerationCounters();
71 _heap_counters = new ShenandoahGenerationCounters(heap);
72 _space_counters = new HSpaceCounters(_heap_counters->name_space(), "Heap", 0, heap->max_capacity(), heap->initial_capacity());
73
74 _heap_region_counters = new ShenandoahHeapRegionCounters();
75
76 _counters_update_task.enroll();
77 }
78
79 CollectorCounters* ShenandoahMonitoringSupport::stw_collection_counters() {
80 return _full_counters;
81 }
82
83 CollectorCounters* ShenandoahMonitoringSupport::full_stw_collection_counters() {
84 return _full_counters;
85 }
86
87 CollectorCounters* ShenandoahMonitoringSupport::concurrent_collection_counters() {
88 return _full_counters;
89 }
90
91 CollectorCounters* ShenandoahMonitoringSupport::partial_collection_counters() {
92 return _partial_counters;
93 }
94
95 void ShenandoahMonitoringSupport::update_counters() {
96 MemoryService::track_memory_usage();
97
98 if (UsePerfData) {
99 ShenandoahHeap* heap = ShenandoahHeap::heap();
100 size_t used = heap->used();
101 size_t capacity = heap->max_capacity();
102 _heap_counters->update_all();
103 _space_counters->update_all(capacity, used);
104 _heap_region_counters->update();
105
106 MetaspaceCounters::update_performance_counters();
107 }
108 }
109
110 void ShenandoahMonitoringSupport::notify_heap_changed() {
111 _counters_update_task.notify_heap_changed();
112 }
113
114 void ShenandoahMonitoringSupport::set_forced_counters_update(bool value) {
115 _counters_update_task.set_forced_counters_update(value);
116 }
117
118 void ShenandoahMonitoringSupport::handle_force_counters_update() {
119 _counters_update_task.handle_force_counters_update();
120 }
121
122 void ShenandoahPeriodicCountersUpdateTask::task() {
123 handle_force_counters_update();
124 handle_counters_update();
125 }
126
127 void ShenandoahPeriodicCountersUpdateTask::handle_counters_update() {
128 if (_do_counters_update.is_set()) {
129 _do_counters_update.unset();
130 _monitoring_support->update_counters();
131 }
132 }
133
134 void ShenandoahPeriodicCountersUpdateTask::handle_force_counters_update() {
135 if (_force_counters_update.is_set()) {
136 _do_counters_update.unset(); // reset these too, we do update now!
137 _monitoring_support->update_counters();
138 }
139 }
140
141 void ShenandoahPeriodicCountersUpdateTask::notify_heap_changed() {
142 if (_do_counters_update.is_unset()) {
143 _do_counters_update.set();
144 }
145 }
146
147 void ShenandoahPeriodicCountersUpdateTask::set_forced_counters_update(bool value) {
148 _force_counters_update.set_cond(value);
149 }