1 /*
2 * Copyright (c) 2017, 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/epsilon/epsilonMonitoringSupport.hpp"
26 #include "gc/epsilon/epsilonHeap.hpp"
27 #include "gc/shared/generationCounters.hpp"
28 #include "memory/allocation.hpp"
29 #include "memory/allocation.inline.hpp"
30 #include "memory/metaspaceCounters.hpp"
31 #include "memory/resourceArea.hpp"
32 #include "services/memoryService.hpp"
33
34 class EpsilonSpaceCounters: public CHeapObj<mtGC> {
35 friend class VMStructs;
36
37 private:
38 PerfVariable* _capacity;
39 PerfVariable* _used;
40 char* _name_space;
41
42 public:
43 EpsilonSpaceCounters(const char* name,
44 int ordinal,
45 size_t max_size,
46 size_t initial_capacity,
47 GenerationCounters* gc) {
48 if (UsePerfData) {
49 EXCEPTION_MARK;
50 ResourceMark rm;
51
52 const char* cns = PerfDataManager::name_space(gc->name_space(), "space", ordinal);
53
54 _name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtGC);
55 strcpy(_name_space, cns);
56
57 const char* cname = PerfDataManager::counter_name(_name_space, "name");
58 PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK);
59
60 cname = PerfDataManager::counter_name(_name_space, "maxCapacity");
61 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes, (jlong)max_size, CHECK);
62
63 cname = PerfDataManager::counter_name(_name_space, "capacity");
64 _capacity = PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes, initial_capacity, CHECK);
65
66 cname = PerfDataManager::counter_name(_name_space, "used");
67 _used = PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes, (jlong) 0, CHECK);
68
69 cname = PerfDataManager::counter_name(_name_space, "initCapacity");
70 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes, initial_capacity, CHECK);
71 }
72 }
73
74 ~EpsilonSpaceCounters() {
75 FREE_C_HEAP_ARRAY(char, _name_space);
76 }
77
78 inline void update_all(size_t capacity, size_t used) {
79 _capacity->set_value(capacity);
80 _used->set_value(used);
81 }
82 };
83
84 class EpsilonGenerationCounters : public GenerationCounters {
85 private:
86 EpsilonHeap* _heap;
87 public:
88 EpsilonGenerationCounters(EpsilonHeap* heap) :
89 GenerationCounters("Heap", 1, 1, 0, heap->max_capacity(), heap->capacity()),
90 _heap(heap)
91 {};
92
93 virtual void update_all() {
94 _current_size->set_value(_heap->capacity());
95 }
96 };
97
98 EpsilonMonitoringSupport::EpsilonMonitoringSupport(EpsilonHeap* heap) {
99 _heap_counters = new EpsilonGenerationCounters(heap);
100 _space_counters = new EpsilonSpaceCounters("Heap", 0, heap->max_capacity(), 0, _heap_counters);
101 }
102
103 void EpsilonMonitoringSupport::update_counters() {
104 MemoryService::track_memory_usage();
105
106 if (UsePerfData) {
107 EpsilonHeap* heap = EpsilonHeap::heap();
108 size_t used = heap->used();
109 size_t capacity = heap->capacity();
110 _heap_counters->update_all();
111 _space_counters->update_all(capacity, used);
112 MetaspaceCounters::update_performance_counters();
113 CompressedClassSpaceCounters::update_performance_counters();
114 }
115 }
116