1/*
2 * Copyright (c) 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.
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#ifndef SHARE_UTILITIES_TABLE_STATISTICS_HPP
26#define SHARE_UTILITIES_TABLE_STATISTICS_HPP
27
28#include "memory/allocation.hpp"
29#include "utilities/debug.hpp"
30#include "utilities/globalDefinitions.hpp"
31#include "utilities/numberSeq.hpp"
32
33class TableRateStatistics : CHeapObj<mtStatistics> {
34
35 friend class TableStatistics;
36
37private:
38 volatile size_t _added_items;
39 volatile size_t _removed_items;
40
41 jlong _time_stamp;
42 double _seconds_stamp;
43 size_t _added_items_stamp;
44 size_t _added_items_stamp_prev;
45 size_t _removed_items_stamp;
46 size_t _removed_items_stamp_prev;
47
48public:
49 TableRateStatistics();
50 ~TableRateStatistics();
51
52 void add();
53 void remove();
54
55protected:
56 void stamp();
57 float get_add_rate();
58 float get_remove_rate();
59};
60
61class TableStatistics : CHeapObj<mtStatistics> {
62
63public:
64 size_t _literal_bytes;
65
66 size_t _number_of_buckets;
67 size_t _number_of_entries;
68
69 size_t _maximum_bucket_size;
70 float _average_bucket_size;
71 float _variance_of_bucket_size;
72 float _stddev_of_bucket_size;
73
74 size_t _bucket_bytes;
75 size_t _entry_bytes;
76 size_t _total_footprint;
77
78 size_t _bucket_size;
79 size_t _entry_size;
80
81 float _add_rate;
82 float _remove_rate;
83
84 TableStatistics();
85 TableStatistics(TableRateStatistics& rate_stats, NumberSeq summary, size_t literal_bytes, size_t bucket_bytes, size_t node_bytes);
86 ~TableStatistics();
87
88 void print(outputStream* st, const char *table_name);
89};
90
91#endif // SHARE_UTILITIES_TABLE_STATISTICS_HPP
92