1/* Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.
2
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
5 the Free Software Foundation; version 2 of the License.
6
7 This program is distributed in the hope that it will be useful,
8 but WITHOUT ANY WARRANTY; without even the implied warranty of
9 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 GNU General Public License for more details.
11
12 You should have received a copy of the GNU General Public License
13 along with this program; if not, write to the Free Software
14 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */
15
16#ifndef TABLE_ESMS_BY_DIGEST_H
17#define TABLE_ESMS_BY_DIGEST_H
18
19/**
20 @file storage/perfschema/table_esms_by_digest.h
21 Table EVENTS_STATEMENTS_SUMMARY_BY_DIGEST (declarations).
22*/
23
24#include "table_helper.h"
25#include "pfs_digest.h"
26
27/**
28 @addtogroup Performance_schema_tables
29 @{
30*/
31
32/**
33 A row of table
34 PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_SUMMARY_BY_DIGEST.
35*/
36struct row_esms_by_digest
37{
38 /** Columns DIGEST/DIGEST_TEXT. */
39 PFS_digest_row m_digest;
40
41 /** Columns COUNT_STAR, SUM/MIN/AVG/MAX TIMER_WAIT. */
42 PFS_statement_stat_row m_stat;
43
44 /** Column FIRST_SEEN. */
45 ulonglong m_first_seen;
46 /** Column LAST_SEEN. */
47 ulonglong m_last_seen;
48};
49
50/** Table PERFORMANCE_SCHEMA.EVENTS_STATEMENTS_SUMMARY_BY_DIGEST. */
51class table_esms_by_digest : public PFS_engine_table
52{
53public:
54 /** Table share */
55 static PFS_engine_table_share m_share;
56 static PFS_engine_table* create();
57 static int delete_all_rows();
58
59 virtual int rnd_next();
60 virtual int rnd_pos(const void *pos);
61 virtual void reset_position(void);
62
63protected:
64 virtual int read_row_values(TABLE *table,
65 unsigned char *buf,
66 Field **fields,
67 bool read_all);
68
69 table_esms_by_digest();
70
71public:
72 ~table_esms_by_digest()
73 {}
74
75protected:
76 void make_row(PFS_statements_digest_stat*);
77
78private:
79 /** Table share lock. */
80 static THR_LOCK m_table_lock;
81
82 /** Current row. */
83 row_esms_by_digest m_row;
84 /** True is the current row exists. */
85 bool m_row_exists;
86 /** Current position. */
87 PFS_simple_index m_pos;
88 /** Next position. */
89 PFS_simple_index m_next_pos;
90};
91
92/** @} */
93#endif
94