MySQL 8.0.31
Source Code Documentation
table_hosts.h
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22
23#ifndef TABLE_HOSTS_H
24#define TABLE_HOSTS_H
25
26/**
27 @file storage/perfschema/table_hosts.h
28 TABLE HOSTS.
29*/
30
31#include <sys/types.h>
32
36
37struct PFS_host;
38
39/**
40 @addtogroup performance_schema_tables
41 @{
42*/
43
45 public:
47
48 ~PFS_index_hosts_by_host() override = default;
49
50 bool match(PFS_host *pfs) override;
51
52 private:
54};
55
56/**
57 A row of PERFORMANCE_SCHEMA.HOSTS.
58*/
59struct row_hosts {
60 /** Column HOST. */
62 /** Columns CURRENT_CONNECTIONS, TOTAL_CONNECTIONS. */
64};
65
66/** Table PERFORMANCE_SCHEMA.THREADS. */
68 public:
69 /** Table share */
71 /** Table builder */
73 static int delete_all_rows();
74
75 protected:
76 int read_row_values(TABLE *table, unsigned char *buf, Field **fields,
77 bool read_all) override;
78
79 protected:
81
82 public:
83 ~table_hosts() override = default;
84
85 int index_init(uint idx, bool sorted) override;
86
87 private:
88 int make_row(PFS_host *pfs) override;
89
90 /** Table share lock. */
92 /** Table definition. */
94
95 /** Current row. */
97};
98
99/** @} */
100#endif
Definition: field.h:574
An abstract PERFORMANCE_SCHEMA table.
Definition: pfs_engine_table.h:69
Definition: table_hosts.h:44
bool match(PFS_host *pfs) override
Definition: table_hosts.cc:80
PFS_index_hosts_by_host()
Definition: table_hosts.h:46
PFS_key_host m_key
Definition: table_hosts.h:53
~PFS_index_hosts_by_host() override=default
Definition: cursor_by_host.h:41
Definition: table_helper.h:1458
Class to hold information regarding a table to be created on behalf of a plugin.
Definition: plugin_table.h:39
Cursor CURSOR_BY_HOST.
Definition: cursor_by_host.h:51
Table PERFORMANCE_SCHEMA.THREADS.
Definition: table_hosts.h:67
static int delete_all_rows()
Definition: table_hosts.cc:94
static Plugin_table m_table_def
Table definition.
Definition: table_hosts.h:93
static THR_LOCK m_table_lock
Table share lock.
Definition: table_hosts.h:91
static PFS_engine_table * create(PFS_engine_table_share *)
Table builder.
Definition: table_hosts.cc:90
int make_row(PFS_host *pfs) override
Definition: table_hosts.cc:128
row_hosts m_row
Current row.
Definition: table_hosts.h:96
int index_init(uint idx, bool sorted) override
Definition: table_hosts.cc:120
~table_hosts() override=default
table_hosts()
Definition: table_hosts.cc:118
static PFS_engine_table_share m_share
Table share.
Definition: table_hosts.h:70
int read_row_values(TABLE *table, unsigned char *buf, Field **fields, bool read_all) override
Read the current row values.
Definition: table_hosts.cc:151
Cursor CURSOR_BY_HOST (declarations).
Definition: buf0block_hint.cc:29
Data types for columns used in the performance schema tables (declarations)
static const LEX_CSTRING pfs
Definition: sql_show_processlist.cc:65
Row fragment for connection statistics.
Definition: table_helper.h:999
A PERFORMANCE_SCHEMA table share.
Definition: pfs_engine_table.h:357
Row fragment for column HOST.
Definition: table_helper.h:526
Per host statistics.
Definition: pfs_host.h:63
Definition: table.h:1396
Definition: thr_lock.h:138
A row of PERFORMANCE_SCHEMA.HOSTS.
Definition: table_hosts.h:59
PFS_host_row m_host
Column HOST.
Definition: table_hosts.h:61
PFS_connection_stat_row m_connection_stat
Columns CURRENT_CONNECTIONS, TOTAL_CONNECTIONS.
Definition: table_hosts.h:63
Helpers to implement a performance schema table.
unsigned int uint
Definition: uca-dump.cc:29