MySQL 9.0.0
Source Code Documentation
table_tlws_by_table.h
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24
25#ifndef TABLE_LOCK_WAITS_SUMMARY_BY_TABLE_H
26#define TABLE_LOCK_WAITS_SUMMARY_BY_TABLE_H
27
28/**
29 @file storage/perfschema/table_tlws_by_table.h
30 Table TABLE_LOCK_WAITS_SUMMARY_BY_TABLE (declarations).
31*/
32
33#include <sys/types.h>
34
35#include "my_base.h"
38
39class Field;
40class Plugin_table;
41struct PFS_table_share;
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_LOCK_WAITS_SUMMARY_BY_TABLE.
53*/
55 /** Column OBJECT_TYPE, SCHEMA_NAME, OBJECT_NAME. */
57 /** Columns COUNT/SUM/MIN/AVG/MAX READ/WRITE/READ_NORMAL/etc. */
59};
60
62 public:
65 m_key_1("OBJECT_TYPE"),
66 m_key_2("OBJECT_SCHEMA"),
67 m_key_3("OBJECT_NAME") {}
68
69 ~PFS_index_tlws_by_table() override = default;
70
71 virtual bool match(const PFS_table_share *share);
72
73 private:
77};
78
79/** Table PERFORMANCE_SCHEMA.TABLE_LOCK_WAITS_SUMMARY_BY_TABLE. */
81 public:
82 /** Table share */
85 static int delete_all_rows();
86 static ha_rows get_row_count();
87
88 void reset_position() override;
89
90 int rnd_init(bool scan) override;
91 int rnd_next() override;
92 int rnd_pos(const void *pos) override;
93
94 int index_init(uint idx, bool sorted) override;
95 int index_next() override;
96
97 protected:
98 int read_row_values(TABLE *table, unsigned char *buf, Field **fields,
99 bool read_all) override;
101
102 public:
103 ~table_tlws_by_table() override = default;
104
105 protected:
106 int make_row(PFS_table_share *table_share);
107
108 private:
109 /** Table share lock. */
111 /** Table definition. */
113
114 /** Current row. */
116 /** Current position. */
118 /** Next position. */
120
121 protected:
123};
124
125/** @} */
126#endif
Definition: field.h:577
Definition: pfs_engine_table.h:300
An abstract PERFORMANCE_SCHEMA table.
Definition: pfs_engine_table.h:70
Definition: table_tlws_by_table.h:61
PFS_key_object_type m_key_1
Definition: table_tlws_by_table.h:74
PFS_key_object_schema m_key_2
Definition: table_tlws_by_table.h:75
~PFS_index_tlws_by_table() override=default
PFS_index_tlws_by_table()
Definition: table_tlws_by_table.h:63
virtual bool match(const PFS_table_share *share)
Definition: table_tlws_by_table.cc:144
PFS_key_object_name m_key_3
Definition: table_tlws_by_table.h:76
Definition: table_helper.h:1658
Definition: table_helper.h:1643
Definition: table_helper.h:1683
Class to hold information regarding a table to be created on behalf of a plugin.
Definition: plugin_table.h:40
Table PERFORMANCE_SCHEMA.TABLE_LOCK_WAITS_SUMMARY_BY_TABLE.
Definition: table_tlws_by_table.h:80
int index_next() override
Find key in index, read record.
Definition: table_tlws_by_table.cc:233
PFS_index_tlws_by_table * m_opened_index
Definition: table_tlws_by_table.h:122
table_tlws_by_table()
Definition: table_tlws_by_table.cc:180
row_tlws_by_table m_row
Current row.
Definition: table_tlws_by_table.h:115
int rnd_pos(const void *pos) override
Fetch a row by position.
Definition: table_tlws_by_table.cc:212
int rnd_init(bool scan) override
Initialize table scan.
Definition: table_tlws_by_table.cc:193
PFS_simple_index m_next_pos
Next position.
Definition: table_tlws_by_table.h:119
int index_init(uint idx, bool sorted) override
Definition: table_tlws_by_table.cc:225
static THR_LOCK m_table_lock
Table share lock.
Definition: table_tlws_by_table.h:110
static int delete_all_rows()
Definition: table_tlws_by_table.cc:170
PFS_simple_index m_pos
Current position.
Definition: table_tlws_by_table.h:117
static PFS_engine_table * create(PFS_engine_table_share *)
Definition: table_tlws_by_table.cc:166
void reset_position() override
Reset the cursor position to the beginning of the table.
Definition: table_tlws_by_table.cc:188
static Plugin_table m_table_def
Table definition.
Definition: table_tlws_by_table.h:112
static ha_rows get_row_count()
Definition: table_tlws_by_table.cc:176
~table_tlws_by_table() override=default
int rnd_next() override
Fetch the next row in this cursor.
Definition: table_tlws_by_table.cc:195
int read_row_values(TABLE *table, unsigned char *buf, Field **fields, bool read_all) override
Read the current row values.
Definition: table_tlws_by_table.cc:274
int make_row(PFS_table_share *table_share)
Definition: table_tlws_by_table.cc:253
static PFS_engine_table_share m_share
Table share.
Definition: table_tlws_by_table.h:83
This file includes constants used by all storage engines.
my_off_t ha_rows
Definition: my_base.h:1141
static PFS_engine_table_share_proxy table
Definition: pfs.cc:61
Definition: buf0block_hint.cc:30
Performance schema tables (declarations).
A PERFORMANCE_SCHEMA table share.
Definition: pfs_engine_table.h:358
Row fragment for columns OBJECT_TYPE, SCHEMA_NAME, OBJECT_NAME.
Definition: table_helper.h:603
Position of a cursor, for simple iterations.
Definition: pfs_engine_table.h:566
Row fragment for table lock statistics columns.
Definition: table_helper.h:800
Instrumentation metadata for a table share.
Definition: pfs_instr_class.h:456
Definition: table.h:1407
Definition: thr_lock.h:139
A row of table PERFORMANCE_SCHEMA.TABLE_LOCK_WAITS_SUMMARY_BY_TABLE.
Definition: table_tlws_by_table.h:54
PFS_object_row m_object
Column OBJECT_TYPE, SCHEMA_NAME, OBJECT_NAME.
Definition: table_tlws_by_table.h:56
PFS_table_lock_stat_row m_stat
Columns COUNT/SUM/MIN/AVG/MAX READ/WRITE/READ_NORMAL/etc.
Definition: table_tlws_by_table.h:58
Helpers to implement a performance schema table.