MySQL 8.0.31
Source Code Documentation
table_status_by_account.h
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22
23#ifndef TABLE_STATUS_BY_ACCOUNT_H
24#define TABLE_STATUS_BY_ACCOUNT_H
25
26/**
27 @file storage/perfschema/table_status_by_account.h
28 Table STATUS_BY_ACCOUNT (declarations).
29*/
30
31#include <sys/types.h>
32
33#include "my_base.h"
34#include "my_inttypes.h"
40
41class Field;
42class Plugin_table;
43struct PFS_account;
44struct TABLE;
45struct THR_LOCK;
46
47/**
48 @addtogroup performance_schema_tables
49 @{
50*/
51
52/**
53 A row of table
54 PERFORMANCE_SCHEMA.STATUS_BY_ACCOUNT.
55*/
57 /** Column USER, HOST. */
59 /** Column VARIABLE_NAME. */
61 /** Column VARIABLE_VALUE. */
63};
64
65/**
66 Position of a cursor on
67 PERFORMANCE_SCHEMA.STATUS_BY_ACCOUNT.
68 Index 1 on account (0 based)
69 Index 2 on status variable (0 based)
70*/
73
74 inline void reset(void) {
75 m_index_1 = 0;
76 m_index_2 = 0;
77 }
78
79 inline bool has_more_account(void) {
81 }
82
83 inline void next_account(void) {
84 m_index_1++;
85 m_index_2 = 0;
86 }
87};
88
90 public:
93 m_key_1("USER"),
94 m_key_2("HOST"),
95 m_key_3("VARIABLE_NAME") {}
96
97 ~PFS_index_status_by_account() override = default;
98
99 virtual bool match(PFS_account *pfs);
100 virtual bool match(const Status_variable *pfs);
101
102 private:
106};
107
108/** Table PERFORMANCE_SCHEMA.STATUS_BY_ACCOUNT. */
111
112 public:
113 /** Table share */
116 static int delete_all_rows();
117 static ha_rows get_row_count();
118
119 void reset_position(void) override;
120
121 int rnd_init(bool scan) override;
122 int rnd_next() override;
123 int rnd_pos(const void *pos) override;
124
125 int index_init(uint idx, bool sorted) override;
126 int index_next() override;
127
128 protected:
129 int read_row_values(TABLE *table, unsigned char *buf, Field **fields,
130 bool read_all) override;
132
133 public:
134 ~table_status_by_account() override = default;
135
136 protected:
137 int make_row(PFS_account *pfs_account, const Status_variable *status_var);
138
139 private:
140 /** Table share lock. */
142 /** Table definition. */
144
145 /** Status variable cache for one account. */
147
148 /** Current row. */
150 /** Current position. */
152 /** Next position. */
154
156};
157
158/** @} */
159#endif
Definition: field.h:574
size_t get_row_count()
Definition: pfs_buffer_container.h:464
Definition: pfs_engine_table.h:299
An abstract PERFORMANCE_SCHEMA table.
Definition: pfs_engine_table.h:69
Definition: table_status_by_account.h:89
virtual bool match(PFS_account *pfs)
Definition: table_status_by_account.cc:80
PFS_index_status_by_account()
Definition: table_status_by_account.h:91
PFS_key_user m_key_1
Definition: table_status_by_account.h:103
PFS_key_variable_name m_key_3
Definition: table_status_by_account.h:105
PFS_key_host m_key_2
Definition: table_status_by_account.h:104
~PFS_index_status_by_account() override=default
Definition: table_helper.h:1458
Definition: table_helper.h:1446
Definition: table_helper.h:1531
Status variable cache.
Definition: pfs_variable.h:679
Class to hold information regarding a table to be created on behalf of a plugin.
Definition: plugin_table.h:39
Status variable derived from SHOW_VAR.
Definition: pfs_variable.h:209
Table PERFORMANCE_SCHEMA.STATUS_BY_ACCOUNT.
Definition: table_status_by_account.h:109
void reset_position(void) override
Reset the cursor position to the beginning of the table.
Definition: table_status_by_account.cc:129
PFS_status_variable_cache m_status_cache
Status variable cache for one account.
Definition: table_status_by_account.h:146
pos_status_by_account pos_t
Definition: table_status_by_account.h:110
int make_row(PFS_account *pfs_account, const Status_variable *status_var)
Definition: table_status_by_account.cc:228
int index_init(uint idx, bool sorted) override
Definition: table_status_by_account.cc:181
int rnd_init(bool scan) override
Initialize table scan.
Definition: table_status_by_account.cc:134
pos_t m_next_pos
Next position.
Definition: table_status_by_account.h:153
static Plugin_table m_table_def
Table definition.
Definition: table_status_by_account.h:143
static PFS_engine_table_share m_share
Table share.
Definition: table_status_by_account.h:114
static THR_LOCK m_table_lock
Table share lock.
Definition: table_status_by_account.h:141
PFS_index_status_by_account * m_opened_index
Definition: table_status_by_account.h:155
int index_next() override
Find key in index, read record.
Definition: table_status_by_account.cc:194
pos_t m_pos
Current position.
Definition: table_status_by_account.h:151
table_status_by_account()
Definition: table_status_by_account.cc:123
int rnd_pos(const void *pos) override
Fetch a row by position.
Definition: table_status_by_account.cc:166
static PFS_engine_table * create(PFS_engine_table_share *)
Definition: table_status_by_account.cc:104
static int delete_all_rows()
Definition: table_status_by_account.cc:108
int rnd_next() override
Fetch the next row in this cursor.
Definition: table_status_by_account.cc:141
int read_row_values(TABLE *table, unsigned char *buf, Field **fields, bool read_all) override
Read the current row values.
Definition: table_status_by_account.cc:253
row_status_by_account m_row
Current row.
Definition: table_status_by_account.h:149
~table_status_by_account() override=default
static ha_rows get_row_count()
Definition: table_status_by_account.cc:116
char * pos
Definition: do_ctype.cc:76
This file includes constants used by all storage engines.
my_off_t ha_rows
Definition: my_base.h:1139
Some integer typedefs for easier portability.
Definition: buf0block_hint.cc:29
Generic buffer container.
PFS_account_container global_account_container
Performance schema tables (declarations).
Performance schema system and status variables (declarations).
static const LEX_CSTRING pfs
Definition: sql_show_processlist.cc:65
Performance schema instrumentation (declarations).
Row fragment for columns USER, HOST.
Definition: table_helper.h:550
Per account statistics.
Definition: pfs_account.h:66
Position of a double cursor, for iterations using 2 nested loops.
Definition: pfs_engine_table.h:593
uint m_index_1
Outer index.
Definition: pfs_engine_table.h:595
uint m_index_2
Current index within index_1.
Definition: pfs_engine_table.h:597
A PERFORMANCE_SCHEMA table share.
Definition: pfs_engine_table.h:357
Definition: table_helper.h:1086
Definition: table_helper.h:1099
Definition: table.h:1396
Definition: thr_lock.h:138
Position of a cursor on PERFORMANCE_SCHEMA.STATUS_BY_ACCOUNT.
Definition: table_status_by_account.h:71
void reset(void)
Definition: table_status_by_account.h:74
pos_status_by_account()
Definition: table_status_by_account.h:72
void next_account(void)
Definition: table_status_by_account.h:83
bool has_more_account(void)
Definition: table_status_by_account.h:79
A row of table PERFORMANCE_SCHEMA.STATUS_BY_ACCOUNT.
Definition: table_status_by_account.h:56
PFS_account_row m_account
Column USER, HOST.
Definition: table_status_by_account.h:58
PFS_variable_name_row m_variable_name
Column VARIABLE_NAME.
Definition: table_status_by_account.h:60
PFS_variable_value_row m_variable_value
Column VARIABLE_VALUE.
Definition: table_status_by_account.h:62
Helpers to implement a performance schema table.
unsigned int uint
Definition: uca-dump.cc:29