MySQL 8.4.3
Source Code Documentation
rpl_info_table_access.h
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23#ifndef RPL_INFO_TABLE_ACCESS_H
24#define RPL_INFO_TABLE_ACCESS_H
25
26#include <sys/types.h>
27
28#include "sql/rpl_table_access.h" // System_table_access
29
30class Field;
32class Rpl_info_values;
33class THD;
34struct TABLE;
35
37
39 public:
41 ~Rpl_info_table_access() override = default;
42
43 /**
44 Prepares before opening table.
45 - set flags
46 - start lex and reset the part of THD responsible
47 for the state of command processing if needed.
48
49 @param[in] thd Thread requesting to open the table
50 */
51 void before_open(THD *thd) override;
53 bool error);
55 enum enum_return_id scan_info(TABLE *table, uint instance);
56 std::pair<bool, bool> is_table_in_use(TABLE *table);
58 bool load_info_values(uint max_num_field, Field **fields,
59 Rpl_info_values *field_values);
60 bool store_info_values(uint max_num_field, Field **fields,
61 Rpl_info_values *field_values);
62 THD *create_thd();
63 void drop_thd(THD *thd);
64
65 private:
67
70};
71#endif /* RPL_INFO_TABLE_ACCESS_H */
Definition: field.h:575
Storage for backup of Open_tables_state.
Definition: sql_class.h:693
Definition: rpl_info_table_access.h:38
THD * create_thd()
Creates a new thread if necessary.
Definition: rpl_info_table_access.cc:367
bool thd_created
Definition: rpl_info_table_access.h:66
bool load_info_values(uint max_num_field, Field **fields, Rpl_info_values *field_values)
Reads information from a sequence of fields into a set of LEX_STRING structures, where the sequence o...
Definition: rpl_info_table_access.cc:296
Rpl_info_table_access(const Rpl_info_table_access &info)
enum enum_return_id find_info(Rpl_info_values *field_values, TABLE *table)
Positions the internal pointer of table according to the primary key.
Definition: rpl_info_table_access.cc:134
void drop_thd(THD *thd)
Destroys the created thread if necessary and restores the system_thread information.
Definition: rpl_info_table_access.cc:390
bool close_table(THD *thd, TABLE *table, Open_tables_backup *backup, bool error)
Commits the changes, unlocks the table and closes it.
Definition: rpl_info_table_access.cc:100
bool store_info_values(uint max_num_field, Field **fields, Rpl_info_values *field_values)
Stores information from a sequence of fields into a set of LEX_STRING structures, where the sequence ...
Definition: rpl_info_table_access.cc:334
bool count_info(TABLE *table, ulonglong *counter)
Returns the number of entries in table.
Definition: rpl_info_table_access.cc:250
Rpl_info_table_access()
Definition: rpl_info_table_access.h:40
Rpl_info_table_access & operator=(const Rpl_info_table_access &info)
void before_open(THD *thd) override
Prepares before opening table.
Definition: rpl_info_table_access.cc:53
enum enum_return_id scan_info(TABLE *table, uint instance)
Positions the internal pointer of table to the n-instance row.
Definition: rpl_info_table_access.cc:197
~Rpl_info_table_access() override=default
std::pair< bool, bool > is_table_in_use(TABLE *table)
Returns if the table is being used, meaning it contains at least a line or some concurrency related e...
Definition: rpl_info_table_access.cc:269
Definition: rpl_info_values.h:31
A base class for accessing a system table.
Definition: rpl_table_access.h:40
For each client connection we create a separate thread with THD serving as a thread/connection descri...
Definition: sql_lexer_thd.h:36
unsigned long long int ulonglong
Definition: my_inttypes.h:56
static bool backup
Definition: myisampack.cc:198
uint counter
Definition: mysqlimport.cc:58
static PFS_engine_table_share_proxy table
Definition: pfs.cc:61
enum_return_id
Definition: rpl_info_table_access.h:36
@ FOUND_ID
Definition: rpl_info_table_access.h:36
@ ERROR_ID
Definition: rpl_info_table_access.h:36
@ NOT_FOUND_ID
Definition: rpl_info_table_access.h:36
Definition: table.h:1406