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 MetaspaceAux::used_bytes();
70}
71
72size_t MetaspaceCounters::capacity() {
73  return MetaspaceAux::committed_bytes();
74}
75
76size_t MetaspaceCounters::max_capacity() {
77  return MetaspaceAux::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 MetaspaceAux::used_bytes(Metaspace::ClassType);
102}
103
104size_t CompressedClassSpaceCounters::capacity() {
105  return MetaspaceAux::committed_bytes(Metaspace::ClassType);
106}
107
108size_t CompressedClassSpaceCounters::max_capacity() {
109  return MetaspaceAux::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