1/* Copyright (c) 2010, 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_OBJECTS_SUMMARY_GLOBAL_BY_TYPE_H
17#define TABLE_OBJECTS_SUMMARY_GLOBAL_BY_TYPE_H
18
19/**
20 @file storage/perfschema/table_os_global_by_type.h
21 Table OBJECTS_SUMMARY_GLOBAL_BY_TYPE (declarations).
22*/
23
24#include "pfs_column_types.h"
25#include "pfs_engine_table.h"
26#include "pfs_instr_class.h"
27#include "pfs_instr.h"
28#include "table_helper.h"
29
30/**
31 @addtogroup Performance_schema_tables
32 @{
33*/
34
35/**
36 A row of table
37 PERFORMANCE_SCHEMA.OBJECTS_SUMMARY_GLOBAL_BY_TYPE.
38*/
39struct row_os_global_by_type
40{
41 /** Column OBJECT_TYPE. */
42 enum_object_type m_object_type;
43 /** Column SCHEMA_NAME. */
44 char m_schema_name[NAME_LEN];
45 /** Length in bytes of @c m_schema_name. */
46 uint m_schema_name_length;
47 /** Column OBJECT_NAME. */
48 char m_object_name[NAME_LEN];
49 /** Length in bytes of @c m_object_name. */
50 uint m_object_name_length;
51 /** Columns COUNT_STAR, SUM/MIN/AVG/MAX TIMER_WAIT. */
52 PFS_stat_row m_stat;
53};
54
55/**
56 Position of a cursor on
57 PERFORMANCE_SCHEMA.OBJECTS_SUMMARY_GLOBAL_BY_TYPE.
58 Index 1 on object type
59 Index 2 on object instance (0 based)
60*/
61struct pos_os_global_by_type : public PFS_double_index,
62 public PFS_object_view_constants
63{
64 pos_os_global_by_type()
65 : PFS_double_index(FIRST_VIEW, 0)
66 {}
67
68 inline void reset(void)
69 {
70 m_index_1= FIRST_VIEW;
71 m_index_2= 0;
72 }
73
74 inline bool has_more_view(void)
75 { return (m_index_1 <= LAST_VIEW); }
76
77 inline void next_view(void)
78 {
79 m_index_1++;
80 m_index_2= 0;
81 }
82};
83
84/** Table PERFORMANCE_SCHEMA.OBJECTS_SUMMARY_GLOBAL_BY_TYPE. */
85class table_os_global_by_type : public PFS_engine_table
86{
87public:
88 /** Table share */
89 static PFS_engine_table_share m_share;
90 static PFS_engine_table* create();
91 static int delete_all_rows();
92
93 virtual int rnd_next();
94 virtual int rnd_pos(const void *pos);
95 virtual void reset_position(void);
96
97protected:
98 virtual int read_row_values(TABLE *table,
99 unsigned char *buf,
100 Field **fields,
101 bool read_all);
102
103 table_os_global_by_type();
104
105public:
106 ~table_os_global_by_type()
107 {}
108
109protected:
110 void make_row(PFS_table_share *table_share);
111
112private:
113 /** Table share lock. */
114 static THR_LOCK m_table_lock;
115
116 /** Current row. */
117 row_os_global_by_type m_row;
118 /** True is the current row exists. */
119 bool m_row_exists;
120 /** Current position. */
121 pos_os_global_by_type m_pos;
122 /** Next position. */
123 pos_os_global_by_type m_next_pos;
124};
125
126
127/** @} */
128#endif
129