cSpaceCounters.cpp revision 8413:92457dfb91bd 
1/*
2 * Copyright (c) 2002, 2015, 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
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23 */
24
25#include "precompiled.hpp"
26#include "gc/serial/cSpaceCounters.hpp"
27#include "memory/metaspace.hpp"
28#include "memory/resourceArea.hpp"
29
30CSpaceCounters::CSpaceCounters(const char* name, int ordinal, size_t max_size,
31                               ContiguousSpace* s, GenerationCounters* gc) :
32   _space(s) {
33
34  if (UsePerfData) {
35    EXCEPTION_MARK;
36    ResourceMark rm;
37
38    const char* cns = PerfDataManager::name_space(gc->name_space(), "space",
39                                                  ordinal);
40
41    _name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtGC);
42    strcpy(_name_space, cns);
43
44    const char* cname = PerfDataManager::counter_name(_name_space, "name");
45    PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK);
46
47    cname = PerfDataManager::counter_name(_name_space, "maxCapacity");
48    _max_capacity = PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
49                                     (jlong)max_size, CHECK);
50
51    cname = PerfDataManager::counter_name(_name_space, "capacity");
52    _capacity = PerfDataManager::create_variable(SUN_GC, cname,
53                                                 PerfData::U_Bytes,
54                                                 _space->capacity(), CHECK);
55
56    cname = PerfDataManager::counter_name(_name_space, "used");
57    _used = PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
58                                    new ContiguousSpaceUsedHelper(_space),
59                                    CHECK);
60
61    cname = PerfDataManager::counter_name(_name_space, "initCapacity");
62    PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
63                                     _space->capacity(), CHECK);
64  }
65}
66
67void CSpaceCounters::update_capacity() {
68  _capacity->set_value(_space->capacity());
69}
70
71void CSpaceCounters::update_used() {
72  _used->set_value(_space->used());
73}
74
75void CSpaceCounters::update_all() {
76  update_used();
77  update_capacity();
78}
79
80jlong ContiguousSpaceUsedHelper::take_sample(){
81  return _space->used();
82}
83