1/*
2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. 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 "memory/metaspaceCounters.hpp"
27#include "memory/resourceArea.hpp"
28#include "runtime/globals.hpp"
29#include "runtime/perfData.hpp"
30#include "utilities/exceptions.hpp"
31
32class MetaspacePerfCounters: public CHeapObj<mtInternal> {
33 friend class VMStructs;
34 PerfVariable* _capacity;
35 PerfVariable* _used;
36 PerfVariable* _max_capacity;
37
38 PerfVariable* create_variable(const char *ns, const char *name, size_t value, TRAPS) {
39 const char *path = PerfDataManager::counter_name(ns, name);
40 return PerfDataManager::create_variable(SUN_GC, path, PerfData::U_Bytes, value, THREAD);
41 }
42
43 void create_constant(const char *ns, const char *name, size_t value, TRAPS) {
44 const char *path = PerfDataManager::counter_name(ns, name);
45 PerfDataManager::create_constant(SUN_GC, path, PerfData::U_Bytes, value, THREAD);
46 }
47
48 public:
49 MetaspacePerfCounters(const char* ns, size_t min_capacity, size_t curr_capacity, size_t max_capacity, size_t used) {
50 EXCEPTION_MARK;
51 ResourceMark rm;
52
53 create_constant(ns, "minCapacity", min_capacity, THREAD);
54 _capacity = create_variable(ns, "capacity", curr_capacity, THREAD);
55 _max_capacity = create_variable(ns, "maxCapacity", max_capacity, THREAD);
56 _used = create_variable(ns, "used", used, THREAD);
57 }
58
59 void update(size_t capacity, size_t max_capacity, size_t used) {
60 _capacity->set_value(capacity);
61 _max_capacity->set_value(max_capacity);
62 _used->set_value(used);
63 }
64};
65
66MetaspacePerfCounters* MetaspaceCounters::_perf_counters = NULL;
67
68size_t MetaspaceCounters::used() {
69 return MetaspaceUtils::used_bytes();
70}
71
72size_t MetaspaceCounters::capacity() {
73 return MetaspaceUtils::committed_bytes();
74}
75
76size_t MetaspaceCounters::max_capacity() {
77 return MetaspaceUtils::reserved_bytes();
78}
79
80void MetaspaceCounters::initialize_performance_counters() {
81 if (UsePerfData) {
82 assert(_perf_counters == NULL, "Should only be initialized once");
83
84 size_t min_capacity = 0;
85 _perf_counters = new MetaspacePerfCounters("metaspace", min_capacity,
86 capacity(), max_capacity(), used());
87 }
88}
89
90void MetaspaceCounters::update_performance_counters() {
91 if (UsePerfData) {
92 assert(_perf_counters != NULL, "Should be initialized");
93
94 _perf_counters->update(capacity(), max_capacity(), used());
95 }
96}
97
98MetaspacePerfCounters* CompressedClassSpaceCounters::_perf_counters = NULL;
99
100size_t CompressedClassSpaceCounters::used() {
101 return MetaspaceUtils::used_bytes(Metaspace::ClassType);
102}
103
104size_t CompressedClassSpaceCounters::capacity() {
105 return MetaspaceUtils::committed_bytes(Metaspace::ClassType);
106}
107
108size_t CompressedClassSpaceCounters::max_capacity() {
109 return MetaspaceUtils::reserved_bytes(Metaspace::ClassType);
110}
111
112void CompressedClassSpaceCounters::update_performance_counters() {
113 if (UsePerfData && UseCompressedClassPointers) {
114 assert(_perf_counters != NULL, "Should be initialized");
115
116 _perf_counters->update(capacity(), max_capacity(), used());
117 }
118}
119
120void CompressedClassSpaceCounters::initialize_performance_counters() {
121 if (UsePerfData) {
122 assert(_perf_counters == NULL, "Should only be initialized once");
123 const char* ns = "compressedclassspace";
124
125 if (UseCompressedClassPointers) {
126 size_t min_capacity = 0;
127 _perf_counters = new MetaspacePerfCounters(ns, min_capacity, capacity(),
128 max_capacity(), used());
129 } else {
130 _perf_counters = new MetaspacePerfCounters(ns, 0, 0, 0, 0);
131 }
132 }
133}
134