set_var.h File Reference

#include <my_getopt.h>
#include <vector>
#include "item.h"
#include "sql_class.h"
#include "binlog.h"
#include "sql_plugin.h"

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Classes
struct	sys_var_chain
class	sys_var
class	set_var_base
class	set_var
class	set_var_user
class	set_var_password
class	set_var_collation_client

Functions
int	mysql_add_sys_var_chain (sys_var *chain)
int	mysql_del_sys_var_chain (sys_var *chain)
SHOW_VAR *	enumerate_sys_vars (THD *thd, bool sorted, enum enum_var_type type)
sys_var *	find_sys_var (THD *thd, const char *str, uint length=0)
int	sql_set_variables (THD *thd, List< set_var_base > *var_list)
bool	fix_delay_key_write (sys_var *self, THD *thd, enum_var_type type)
sql_mode_t	expand_sql_mode (sql_mode_t sql_mode)
bool	sql_mode_string_representation (THD *thd, sql_mode_t sql_mode, LEX_STRING *ls)
const CHARSET_INFO *	get_old_charset_by_name (const char *old_name)
int	sys_var_init ()
int	sys_var_add_options (std::vector< my_option > *long_options, int parse_flags)
void	sys_var_end (void)

Variables
TYPELIB	bool_typelib
SHOW_COMP_OPTION	have_csv
SHOW_COMP_OPTION	have_ndbcluster
SHOW_COMP_OPTION	have_partitioning
SHOW_COMP_OPTION	have_profiling
SHOW_COMP_OPTION	have_ssl
SHOW_COMP_OPTION	have_symlink
SHOW_COMP_OPTION	have_dlopen
SHOW_COMP_OPTION	have_query_cache
SHOW_COMP_OPTION	have_geometry
SHOW_COMP_OPTION	have_rtree_keys
SHOW_COMP_OPTION	have_crypt
SHOW_COMP_OPTION	have_compress
sys_var *	Sys_autocommit_ptr
sys_var *	Sys_gtid_next_ptr
sys_var *	Sys_gtid_next_list_ptr
sys_var *	Sys_gtid_purged_ptr

Detailed Description

"public" interface to sys_var - server configuration variables.

Definition in file set_var.h.

Function Documentation

SHOW_VAR* enumerate_sys_vars	(	THD *	thd,
		bool	sorted,
		enum enum_var_type	type
	)

Constructs an array of system variables for display to the user.

Parameters

thd	current thread
sorted	If TRUE, the system variables should be sorted
type	OPT_GLOBAL or OPT_SESSION for SHOW GLOBAL|SESSION VARIABLES

Return values

pointer	Array of SHOW_VAR elements for display
NULL	FAILURE

Definition at line 466 of file set_var.cc.

bool fix_delay_key_write	(	sys_var *	self,
		THD *	thd,
		enum_var_type	type
	)

Todo:

When updating myisam_delay_key_write, we should do a 'flush tables' of all MyISAM tables to ensure that they are reopen with the new attribute.

Definition at line 1168 of file sys_vars.cc.

int mysql_add_sys_var_chain

(

sys_var *

first

)

Add variables to the dynamic hash of system variables

Parameters

first

Pointer to first system variable to add

Return values

0	SUCCESS
otherwise	FAILURE

Definition at line 398 of file set_var.cc.

int sql_set_variables	(	THD *	thd,
		List< set_var_base > *	var_list
	)

Execute update of all variables.

First run a check of all variables that all updates will go ok. If yes, then execute all updates, returning an error if any one failed.

This should ensure that in all normal cases none all or variables are updated.

Parameters

THD	Thread id
var_list	List of variables to update

Return values

0	ok
1	ERROR, message sent (normally no variables was updated)
-1	ERROR, message not sent

Definition at line 557 of file set_var.cc.

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