MySQL 8.0.31
Source Code Documentation
table_setup_instruments.h
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22
23#ifndef TABLE_SETUP_INSTRUMENTS_H
24#define TABLE_SETUP_INSTRUMENTS_H
25
26/**
27 @file storage/perfschema/table_setup_instruments.h
28 Table SETUP_INSTRUMENTS (declarations).
29*/
30
31#include <sys/types.h>
32
33#include "my_base.h"
36
37class Field;
38class Plugin_table;
39struct PFS_instr_class;
40struct TABLE;
41struct THR_LOCK;
42
43/**
44 @addtogroup performance_schema_tables
45 @{
46*/
47
48/** A row of PERFORMANCE_SCHEMA.SETUP_INSTRUMENTS. */
50 /** Columns NAME, ENABLED, TIMED. */
52 /** True if column ENABLED can be updated. */
54 /** True if column TIMED can be updated. */
56 /** True if column FLAGS can be updated. */
58};
59
60/** Position of a cursor on PERFORMANCE_SCHEMA.SETUP_INSTRUMENTS. */
64
65 inline void reset(void) {
67 m_index_2 = 1;
68 }
69
70 inline bool has_more_view(void) { return (m_index_1 <= LAST_INSTRUMENT); }
71
72 inline void next_view(void) {
73 m_index_1++;
74 m_index_2 = 1;
75 }
76};
77
79 public:
81
82 ~PFS_index_setup_instruments() override = default;
83
84 bool match_view(uint view);
85 bool match(PFS_instr_class *klass);
86
87 private:
89};
90
91/** Table PERFORMANCE_SCHEMA.SETUP_INSTRUMENTS. */
93 public:
94 /** Table share. */
97 static ha_rows get_row_count();
98
99 void reset_position(void) override;
100
101 int rnd_next() override;
102 int rnd_pos(const void *pos) override;
103
104 int index_init(uint idx, bool sorted) override;
105 int index_next() override;
106
107 protected:
108 int read_row_values(TABLE *table, unsigned char *buf, Field **fields,
109 bool read_all) override;
110
111 int update_row_values(TABLE *table, const unsigned char *old_buf,
112 unsigned char *new_buf, Field **fields) override;
113
115
116 public:
117 ~table_setup_instruments() override = default;
118
119 private:
120 int make_row(PFS_instr_class *klass, bool update_enabled);
121
122 /** Table share lock. */
124 /** Table definition. */
126
127 /** Current row. */
129 /** Current position. */
131 /** Next position. */
133
135};
136
137/** @} */
138#endif
Definition: field.h:574
Definition: pfs_engine_table.h:299
An abstract PERFORMANCE_SCHEMA table.
Definition: pfs_engine_table.h:69
Definition: table_setup_instruments.h:78
bool match_view(uint view)
Definition: table_setup_instruments.cc:82
PFS_index_setup_instruments()
Definition: table_setup_instruments.h:80
~PFS_index_setup_instruments() override=default
bool match(PFS_instr_class *klass)
Definition: table_setup_instruments.cc:89
PFS_key_event_name m_key
Definition: table_setup_instruments.h:88
Definition: table_helper.h:1431
Class to hold information regarding a table to be created on behalf of a plugin.
Definition: plugin_table.h:39
Table PERFORMANCE_SCHEMA.SETUP_INSTRUMENTS.
Definition: table_setup_instruments.h:92
row_setup_instruments m_row
Current row.
Definition: table_setup_instruments.h:128
pos_setup_instruments m_next_pos
Next position.
Definition: table_setup_instruments.h:132
~table_setup_instruments() override=default
int read_row_values(TABLE *table, unsigned char *buf, Field **fields, bool read_all) override
Read the current row values.
Definition: table_setup_instruments.cc:364
int rnd_next() override
Fetch the next row in this cursor.
Definition: table_setup_instruments.cc:114
static THR_LOCK m_table_lock
Table share lock.
Definition: table_setup_instruments.h:123
table_setup_instruments()
Definition: table_setup_instruments.cc:106
int index_next() override
Find key in index, read record.
Definition: table_setup_instruments.cc:270
static Plugin_table m_table_def
Table definition.
Definition: table_setup_instruments.h:125
int make_row(PFS_instr_class *klass, bool update_enabled)
Definition: table_setup_instruments.cc:354
int rnd_pos(const void *pos) override
Fetch a row by position.
Definition: table_setup_instruments.cc:187
static PFS_engine_table * create(PFS_engine_table_share *)
Definition: table_setup_instruments.cc:97
int index_init(uint idx, bool sorted) override
Definition: table_setup_instruments.cc:259
static PFS_engine_table_share m_share
Table share.
Definition: table_setup_instruments.h:95
pos_setup_instruments m_pos
Current position.
Definition: table_setup_instruments.h:130
void reset_position(void) override
Reset the cursor position to the beginning of the table.
Definition: table_setup_instruments.cc:109
PFS_index_setup_instruments * m_opened_index
Definition: table_setup_instruments.h:134
int update_row_values(TABLE *table, const unsigned char *old_buf, unsigned char *new_buf, Field **fields) override
Update the current row values.
Definition: table_setup_instruments.cc:452
static ha_rows get_row_count()
Definition: table_setup_instruments.cc:101
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
Definition: buf0block_hint.cc:29
Performance schema tables (declarations).
static void update_enabled(MYSQL_THD, SYS_VAR *, void *, const void *value)
Updater function for the status variable ..._enabled.
Definition: rewriter_plugin.cc:166
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
Information for all instrumentation.
Definition: pfs_instr_class.h:204
Name space, internal views used within table setup_instruments.
Definition: table_helper.h:488
static const uint FIRST_INSTRUMENT
Definition: table_helper.h:489
static const uint LAST_INSTRUMENT
Definition: table_helper.h:514
Definition: table.h:1396
Definition: thr_lock.h:138
Position of a cursor on PERFORMANCE_SCHEMA.SETUP_INSTRUMENTS.
Definition: table_setup_instruments.h:62
bool has_more_view(void)
Definition: table_setup_instruments.h:70
void next_view(void)
Definition: table_setup_instruments.h:72
pos_setup_instruments()
Definition: table_setup_instruments.h:63
void reset(void)
Definition: table_setup_instruments.h:65
A row of PERFORMANCE_SCHEMA.SETUP_INSTRUMENTS.
Definition: table_setup_instruments.h:49
PFS_instr_class * m_instr_class
Columns NAME, ENABLED, TIMED.
Definition: table_setup_instruments.h:51
bool m_update_timed
True if column TIMED can be updated.
Definition: table_setup_instruments.h:55
bool m_update_enabled
True if column ENABLED can be updated.
Definition: table_setup_instruments.h:53
bool m_update_flags
True if column FLAGS can be updated.
Definition: table_setup_instruments.h:57
Helpers to implement a performance schema table.
unsigned int uint
Definition: uca-dump.cc:29