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comparison src/share/vm/memory/metaspaceCounters.cpp @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
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children 5d2156bcb78b
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6724:36d1d483d5d6 6725:da91efe96a93
1 /*
2 * Copyright (c) 2012 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
29 #define METASPACE_NAME "perm"
30
31 MetaspaceCounters* MetaspaceCounters::_metaspace_counters = NULL;
32
33 MetaspaceCounters::MetaspaceCounters() {
34 if (UsePerfData) {
35 size_t min_capacity = MetaspaceAux::min_chunk_size();
36 size_t max_capacity = MetaspaceAux::reserved_in_bytes();
37 size_t curr_capacity = MetaspaceAux::capacity_in_bytes();
38 size_t used = MetaspaceAux::used_in_bytes();
39
40 initialize(min_capacity, max_capacity, curr_capacity, used);
41 }
42 }
43
44 void MetaspaceCounters::initialize(size_t min_capacity,
45 size_t max_capacity,
46 size_t curr_capacity,
47 size_t used) {
48
49 if (UsePerfData) {
50 EXCEPTION_MARK;
51 ResourceMark rm;
52
53 // Create a name that will be recognized by jstat tools as
54 // the perm gen. Change this to a Metaspace name when the
55 // tools are fixed.
56 // name to recognize "sun.gc.generation.2.*"
57
58 const char* name = METASPACE_NAME;
59 const int ordinal = 2;
60 const int spaces = 1;
61
62 const char* cns = PerfDataManager::name_space("generation", ordinal);
63
64 _name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtClass);
65 strcpy(_name_space, cns);
66
67 const char* cname = PerfDataManager::counter_name(_name_space, "name");
68 PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK);
69
70 // End of perm gen like name creation
71
72 cname = PerfDataManager::counter_name(_name_space, "spaces");
73 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_None,
74 spaces, CHECK);
75
76 cname = PerfDataManager::counter_name(_name_space, "minCapacity");
77 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
78 min_capacity, CHECK);
79
80 cname = PerfDataManager::counter_name(_name_space, "maxCapacity");
81 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
82 max_capacity, CHECK);
83
84 cname = PerfDataManager::counter_name(_name_space, "capacity");
85 _current_size =
86 PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
87 curr_capacity, CHECK);
88
89 // SpaceCounter like counters
90 // name to recognize "sun.gc.generation.2.space.0.*"
91 {
92 const int space_ordinal = 0;
93 const char* cns = PerfDataManager::name_space(_name_space, "space",
94 space_ordinal);
95
96 char* space_name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtClass);
97 strcpy(space_name_space, cns);
98
99 const char* cname = PerfDataManager::counter_name(space_name_space, "name");
100 PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK);
101
102 cname = PerfDataManager::counter_name(space_name_space, "maxCapacity");
103 _max_capacity = PerfDataManager::create_variable(SUN_GC, cname,
104 PerfData::U_Bytes,
105 (jlong)max_capacity, CHECK);
106
107 cname = PerfDataManager::counter_name(space_name_space, "capacity");
108 _capacity = PerfDataManager::create_variable(SUN_GC, cname,
109 PerfData::U_Bytes,
110 curr_capacity, CHECK);
111
112 cname = PerfDataManager::counter_name(space_name_space, "used");
113 _used = PerfDataManager::create_variable(SUN_GC,
114 cname,
115 PerfData::U_Bytes,
116 used,
117 CHECK);
118
119 cname = PerfDataManager::counter_name(space_name_space, "initCapacity");
120 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
121 min_capacity, CHECK);
122 }
123 }
124 }
125
126 void MetaspaceCounters::update_capacity() {
127 assert(UsePerfData, "Should not be called unless being used");
128 size_t capacity_in_bytes = MetaspaceAux::capacity_in_bytes();
129 _capacity->set_value(capacity_in_bytes);
130 }
131
132 void MetaspaceCounters::update_used() {
133 assert(UsePerfData, "Should not be called unless being used");
134 size_t used_in_bytes = MetaspaceAux::used_in_bytes();
135 _used->set_value(used_in_bytes);
136 }
137
138 void MetaspaceCounters::update_max_capacity() {
139 assert(UsePerfData, "Should not be called unless being used");
140 size_t reserved_in_bytes = MetaspaceAux::reserved_in_bytes();
141 _max_capacity->set_value(reserved_in_bytes);
142 }
143
144 void MetaspaceCounters::update_all() {
145 if (UsePerfData) {
146 update_used();
147 update_capacity();
148 update_max_capacity();
149 _current_size->set_value(MetaspaceAux::reserved_in_bytes());
150 }
151 }
152
153 void MetaspaceCounters::initialize_performance_counters() {
154 if (UsePerfData) {
155 _metaspace_counters = new MetaspaceCounters();
156 }
157 }
158
159 void MetaspaceCounters::update_performance_counters() {
160 if (UsePerfData) {
161 _metaspace_counters->update_all();
162 }
163 }
164