System_variable Class Reference

System variable derived from sys_var object. More...

#include <pfs_variable.h>

Public Member Functions
	System_variable ()
	CLASS System_variable. More...
	System_variable (THD *target_thd, const SHOW_VAR *show_var, enum_var_type query_scope)
	GLOBAL or SESSION system variable. More...
	System_variable (THD *target_thd, const SHOW_VAR *show_var)
	GLOBAL and SESSION system variable. More...
bool	is_null () const

Public Attributes
const char *	m_name
size_t	m_name_length
char	m_value_str [SHOW_VAR_FUNC_BUFF_SIZE+1]
size_t	m_value_length
enum_mysql_show_type	m_type
int	m_scope
const CHARSET_INFO *	m_charset
enum_variable_source	m_source
char	m_path_str [SHOW_VAR_FUNC_BUFF_SIZE+1]
size_t	m_path_length
char	m_min_value_str [SHOW_VAR_FUNC_BUFF_SIZE+1]
size_t	m_min_value_length
char	m_max_value_str [SHOW_VAR_FUNC_BUFF_SIZE+1]
size_t	m_max_value_length
ulonglong	m_set_time
char	m_set_user_str [USERNAME_LENGTH]
size_t	m_set_user_str_length
char	m_set_host_str [HOSTNAME_LENGTH]
size_t	m_set_host_str_length

Private Member Functions
void	init (THD *thd, const SHOW_VAR *show_var, enum_var_type query_scope)
	Get sys_var value from global or local source then convert to string. More...
void	init (THD *thd, const SHOW_VAR *show_var)
	Get sys_var value from global/session and then convert to string. More...

Private Attributes
bool	m_initialized

Detailed Description

System variable derived from sys_var object.

Constructor & Destructor Documentation

System_variable() [1/3]

System_variable::System_variable

(

)

CLASS System_variable.

Empty placeholder.

System_variable() [2/3]

System_variable::System_variable	(	THD *	target_thd,
		const SHOW_VAR *	show_var,
		enum_var_type	query_scope
	)

GLOBAL or SESSION system variable.

System_variable() [3/3]

System_variable::System_variable	(	THD *	target_thd,
		const SHOW_VAR *	show_var
	)

GLOBAL and SESSION system variable.

Member Function Documentation

init() [1/2]

void System_variable::init ( THD *  thd, const SHOW_VAR *  show_var  )

private

Get sys_var value from global/session and then convert to string.

init() [2/2]

void System_variable::init ( THD *  thd, const SHOW_VAR *  show_var, enum_var_type  query_scope  )

private

Get sys_var value from global or local source then convert to string.

is_null()

bool System_variable::is_null ( ) const

inline

Member Data Documentation

m_charset

const CHARSET_INFO* System_variable::m_charset

m_initialized

bool System_variable::m_initialized

private

m_max_value_length

size_t System_variable::m_max_value_length

m_max_value_str

char System_variable::m_max_value_str[SHOW_VAR_FUNC_BUFF_SIZE+1]

m_min_value_length

size_t System_variable::m_min_value_length

m_min_value_str

char System_variable::m_min_value_str[SHOW_VAR_FUNC_BUFF_SIZE+1]

m_name

const char* System_variable::m_name

m_name_length

size_t System_variable::m_name_length

m_path_length

size_t System_variable::m_path_length

m_path_str

char System_variable::m_path_str[SHOW_VAR_FUNC_BUFF_SIZE+1]

m_scope

int System_variable::m_scope

m_set_host_str

char System_variable::m_set_host_str[HOSTNAME_LENGTH]

m_set_host_str_length

size_t System_variable::m_set_host_str_length

m_set_time

ulonglong System_variable::m_set_time

m_set_user_str

char System_variable::m_set_user_str[USERNAME_LENGTH]

m_set_user_str_length

size_t System_variable::m_set_user_str_length

m_source

enum_variable_source System_variable::m_source

m_type

enum_mysql_show_type System_variable::m_type

m_value_length

size_t System_variable::m_value_length

m_value_str

char System_variable::m_value_str[SHOW_VAR_FUNC_BUFF_SIZE+1]

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The documentation for this class was generated from the following files:

• storage/perfschema/pfs_variable.h
• storage/perfschema/pfs_variable.cc