MySQL 8.0.29
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table_table_handles.h
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22
23#ifndef TABLE_TABLE_HANDLES_H
24#define TABLE_TABLE_HANDLES_H
25
26/**
27 @file storage/perfschema/table_table_handles.h
28 Table TABLE_HANDLES (declarations).
29*/
30
31#include <sys/types.h>
32
33#include "my_base.h"
34#include "my_inttypes.h"
38
39class Field;
40class Plugin_table;
41struct PFS_table;
42struct TABLE;
43struct THR_LOCK;
44
45/**
46 @addtogroup performance_schema_tables
47 @{
48*/
49
50/**
51 A row of table
52 PERFORMANCE_SCHEMA.TABLE_HANDLES.
53*/
55 /** Column OBJECT_TYPE, SCHEMA_NAME, OBJECT_NAME. */
57 /** Column OBJECT_INSTANCE_BEGIN. */
58 const void *m_identity;
59 /** Column OWNER_THREAD_ID. */
61 /** Column OWNER_EVENT_ID. */
63 /** Column INTERNAL_LOCK. */
65 /** Column EXTERNAL_LOCK. */
67};
68
70 public:
72 : PFS_engine_index(key_1) {}
73
75 : PFS_engine_index(key_1, key_2) {}
76
78 PFS_engine_key *key_3)
79 : PFS_engine_index(key_1, key_2, key_3) {}
80
81 ~PFS_index_table_handles() override = default;
82
83 virtual bool match(PFS_table *table) = 0;
84};
85
87 public:
90 m_key_1("OBJECT_TYPE"),
91 m_key_2("OBJECT_SCHEMA"),
92 m_key_3("OBJECT_NAME") {}
93
95
96 bool match(PFS_table *table) override;
97
98 private:
102};
103
105 public:
107 : PFS_index_table_handles(&m_key), m_key("OBJECT_INSTANCE_BEGIN") {}
108
110
111 bool match(PFS_table *table) override;
112
113 private:
115};
116
118 public:
121 m_key_1("OWNER_THREAD_ID"),
122 m_key_2("OWNER_EVENT_ID") {}
123
125
126 bool match(PFS_table *table) override;
127
128 private:
131};
132
133/** Table PERFORMANCE_SCHEMA.TABLE_HANDLES. */
135 public:
136 /** Table share */
139 static ha_rows get_row_count();
140
141 void reset_position(void) override;
142
143 int rnd_init(bool scan) override;
144 int rnd_next() override;
145 int rnd_pos(const void *pos) override;
146
147 int index_init(uint idx, bool sorted) override;
148 int index_next() override;
149
150 protected:
151 int read_row_values(TABLE *table, unsigned char *buf, Field **fields,
152 bool read_all) override;
154
155 public:
156 ~table_table_handles() override = default;
157
158 protected:
159 int make_row(PFS_table *table);
160
161 private:
162 /** Table share lock. */
164 /** Table definition. */
166
167 /** Current row. */
169 /** Current position. */
171 /** Next position. */
173
174 protected:
176};
177
178/** @} */
179#endif
Definition: field.h:573
Definition: pfs_engine_table.h:299
Definition: pfs_engine_table.h:267
An abstract PERFORMANCE_SCHEMA table.
Definition: pfs_engine_table.h:69
Definition: table_table_handles.h:104
PFS_key_object_instance m_key
Definition: table_table_handles.h:114
~PFS_index_table_handles_by_instance() override=default
PFS_index_table_handles_by_instance()
Definition: table_table_handles.h:106
bool match(PFS_table *table) override
Definition: table_table_handles.cc:107
Definition: table_table_handles.h:86
~PFS_index_table_handles_by_object() override=default
PFS_key_object_schema m_key_2
Definition: table_table_handles.h:100
bool match(PFS_table *table) override
Definition: table_table_handles.cc:83
PFS_key_object_type m_key_1
Definition: table_table_handles.h:99
PFS_index_table_handles_by_object()
Definition: table_table_handles.h:88
PFS_key_object_name m_key_3
Definition: table_table_handles.h:101
Definition: table_table_handles.h:117
PFS_key_event_id m_key_2
Definition: table_table_handles.h:130
bool match(PFS_table *table) override
Definition: table_table_handles.cc:117
PFS_index_table_handles_by_owner()
Definition: table_table_handles.h:119
PFS_key_thread_id m_key_1
Definition: table_table_handles.h:129
~PFS_index_table_handles_by_owner() override=default
Definition: table_table_handles.h:69
PFS_index_table_handles(PFS_engine_key *key_1)
Definition: table_table_handles.h:71
PFS_index_table_handles(PFS_engine_key *key_1, PFS_engine_key *key_2)
Definition: table_table_handles.h:74
virtual bool match(PFS_table *table)=0
~PFS_index_table_handles() override=default
PFS_index_table_handles(PFS_engine_key *key_1, PFS_engine_key *key_2, PFS_engine_key *key_3)
Definition: table_table_handles.h:77
Definition: table_helper.h:1266
Definition: table_helper.h:1673
Definition: table_helper.h:1610
Definition: table_helper.h:1595
Definition: table_helper.h:1635
Definition: table_helper.h:1250
Class to hold information regarding a table to be created on behalf of a plugin.
Definition: plugin_table.h:39
Table PERFORMANCE_SCHEMA.TABLE_HANDLES.
Definition: table_table_handles.h:134
static PFS_engine_table * create(PFS_engine_table_share *)
Definition: table_table_handles.cc:133
int make_row(PFS_table *table)
Definition: table_table_handles.cc:222
row_table_handles m_row
Current row.
Definition: table_table_handles.h:168
int rnd_init(bool scan) override
Initialize table scan.
Definition: table_table_handles.cc:149
static ha_rows get_row_count()
Definition: table_table_handles.cc:137
void reset_position(void) override
Reset the cursor position to the beginning of the table.
Definition: table_table_handles.cc:144
static PFS_engine_table_share m_share
Table share.
Definition: table_table_handles.h:137
PFS_simple_index m_next_pos
Next position.
Definition: table_table_handles.h:172
int rnd_next() override
Fetch the next row in this cursor.
Definition: table_table_handles.cc:151
static Plugin_table m_table_def
Table definition.
Definition: table_table_handles.h:165
PFS_simple_index m_pos
Current position.
Definition: table_table_handles.h:170
PFS_index_table_handles * m_opened_index
Definition: table_table_handles.h:175
static THR_LOCK m_table_lock
Table share lock.
Definition: table_table_handles.h:163
int index_init(uint idx, bool sorted) override
Definition: table_table_handles.cc:178
int rnd_pos(const void *pos) override
Fetch a row by position.
Definition: table_table_handles.cc:165
table_table_handles()
Definition: table_table_handles.cc:141
int read_row_values(TABLE *table, unsigned char *buf, Field **fields, bool read_all) override
Read the current row values.
Definition: table_table_handles.cc:259
~table_table_handles() override=default
int index_next() override
Find key in index, read record.
Definition: table_table_handles.cc:201
char * pos
Definition: do_ctype.cc:76
PFS_TL_LOCK_TYPE
Definition: pfs_stat.h:669
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.
unsigned long long int ulonglong
Definition: my_inttypes.h:55
Definition: buf0block_hint.cc:29
Performance schema tables (declarations).
Statistics (declarations).
A PERFORMANCE_SCHEMA table share.
Definition: pfs_engine_table.h:357
Row fragment for columns OBJECT_TYPE, SCHEMA_NAME, OBJECT_NAME.
Definition: table_helper.h:616
Position of a cursor, for simple iterations.
Definition: pfs_engine_table.h:558
Instrumented table implementation.
Definition: pfs_instr.h:192
Definition: table.h:1394
Definition: thr_lock.h:138
A row of table PERFORMANCE_SCHEMA.TABLE_HANDLES.
Definition: table_table_handles.h:54
PFS_TL_LOCK_TYPE m_external_lock
Column EXTERNAL_LOCK.
Definition: table_table_handles.h:66
ulonglong m_owner_thread_id
Column OWNER_THREAD_ID.
Definition: table_table_handles.h:60
PFS_object_row m_object
Column OBJECT_TYPE, SCHEMA_NAME, OBJECT_NAME.
Definition: table_table_handles.h:56
const void * m_identity
Column OBJECT_INSTANCE_BEGIN.
Definition: table_table_handles.h:58
PFS_TL_LOCK_TYPE m_internal_lock
Column INTERNAL_LOCK.
Definition: table_table_handles.h:64
ulonglong m_owner_event_id
Column OWNER_EVENT_ID.
Definition: table_table_handles.h:62
Helpers to implement a performance schema table.
unsigned int uint
Definition: uca-dump.cc:29