1 /*
2 * Copyright (c) 2015, 2018, Red Hat, Inc. All rights reserved.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #include "precompiled.hpp"
25 #include "gc/shared/collectorCounters.hpp"
26 #include "gc/shared/generationCounters.hpp"
27 #include "gc/shared/hSpaceCounters.hpp"
28 #include "gc/shenandoah/shenandoahMonitoringSupport.hpp"
29 #include "gc/shenandoah/shenandoahHeap.hpp"
30 #include "gc/shenandoah/shenandoahHeapRegionCounters.hpp"
31 #include "memory/metaspaceCounters.hpp"
32 #include "services/memoryService.hpp"
33
34 class ShenandoahYoungGenerationCounters : public GenerationCounters {
35 public:
ShenandoahYoungGenerationCounters()36 ShenandoahYoungGenerationCounters() :
37 GenerationCounters("Young", 0, 0, 0, (size_t)0, (size_t)0) {};
38
update_all()39 virtual void update_all() {
40 // no update
41 }
42 };
43
44 class ShenandoahGenerationCounters : public GenerationCounters {
45 private:
46 ShenandoahHeap* _heap;
47 public:
ShenandoahGenerationCounters(ShenandoahHeap * heap)48 ShenandoahGenerationCounters(ShenandoahHeap* heap) :
49 GenerationCounters("Heap", 1, 1, heap->initial_capacity(), heap->max_capacity(), heap->capacity()),
50 _heap(heap)
51 {};
52
update_all()53 virtual void update_all() {
54 _current_size->set_value(_heap->capacity());
55 }
56 };
57
ShenandoahMonitoringSupport(ShenandoahHeap * heap)58 ShenandoahMonitoringSupport::ShenandoahMonitoringSupport(ShenandoahHeap* heap) :
59 _partial_counters(NULL),
60 _full_counters(NULL)
61 {
62 // Collection counters do not fit Shenandoah very well.
63 // We record partial cycles as "young", and full cycles (including full STW GC) as "old".
64 _partial_counters = new CollectorCounters("Shenandoah partial", 0);
65 _full_counters = new CollectorCounters("Shenandoah full", 1);
66
67 // We report young gen as unused.
68 _young_counters = new ShenandoahYoungGenerationCounters();
69 _heap_counters = new ShenandoahGenerationCounters(heap);
70 _space_counters = new HSpaceCounters(_heap_counters->name_space(), "Heap", 0, heap->max_capacity(), heap->initial_capacity());
71
72 _heap_region_counters = new ShenandoahHeapRegionCounters();
73 }
74
stw_collection_counters()75 CollectorCounters* ShenandoahMonitoringSupport::stw_collection_counters() {
76 return _full_counters;
77 }
78
full_stw_collection_counters()79 CollectorCounters* ShenandoahMonitoringSupport::full_stw_collection_counters() {
80 return _full_counters;
81 }
82
concurrent_collection_counters()83 CollectorCounters* ShenandoahMonitoringSupport::concurrent_collection_counters() {
84 return _full_counters;
85 }
86
partial_collection_counters()87 CollectorCounters* ShenandoahMonitoringSupport::partial_collection_counters() {
88 return _partial_counters;
89 }
90
update_counters()91 void ShenandoahMonitoringSupport::update_counters() {
92 MemoryService::track_memory_usage();
93
94 if (UsePerfData) {
95 ShenandoahHeap* heap = ShenandoahHeap::heap();
96 size_t used = heap->used();
97 size_t capacity = heap->max_capacity();
98 _heap_counters->update_all();
99 _space_counters->update_all(capacity, used);
100 _heap_region_counters->update();
101
102 MetaspaceCounters::update_performance_counters();
103 CompressedClassSpaceCounters::update_performance_counters();
104 }
105 }
106