1/*
2 * Copyright (c) 2002, 2019, 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.
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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#ifndef SHARE_GC_SERIAL_CSPACECOUNTERS_HPP
26#define SHARE_GC_SERIAL_CSPACECOUNTERS_HPP
27
28#include "gc/shared/generationCounters.hpp"
29#include "gc/shared/space.hpp"
30#include "runtime/perfData.hpp"
31
32// A CSpaceCounters is a holder class for performance counters
33// that track a space;
34
35class CSpaceCounters: public CHeapObj<mtGC> {
36 friend class VMStructs;
37
38 private:
39 PerfVariable* _capacity;
40 PerfVariable* _used;
41 PerfVariable* _max_capacity;
42
43 // Constant PerfData types don't need to retain a reference.
44 // However, it's a good idea to document them here.
45 // PerfConstant* _size;
46
47 ContiguousSpace* _space;
48 char* _name_space;
49
50 public:
51
52 CSpaceCounters(const char* name, int ordinal, size_t max_size,
53 ContiguousSpace* s, GenerationCounters* gc);
54
55 ~CSpaceCounters();
56
57 virtual void update_capacity();
58 virtual void update_used();
59 virtual void update_all();
60
61 const char* name_space() const { return _name_space; }
62};
63
64class ContiguousSpaceUsedHelper : public PerfLongSampleHelper {
65 private:
66 ContiguousSpace* _space;
67
68 public:
69 ContiguousSpaceUsedHelper(ContiguousSpace* space) : _space(space) { }
70
71 jlong take_sample();
72};
73
74#endif // SHARE_GC_SERIAL_CSPACECOUNTERS_HPP
75