ib::redo::Sys_var_handler Class Reference

This class implements the handling of redo log related system variables. More...

#include <log0sys_var_handler.h>

Inheritance diagram for ib::redo::Sys_var_handler:

Public Member Functions
	Sys_var_handler (Handler &handler)
	~Sys_var_handler () override
bool	update_var (THD *thd, std::string_view name, uint64_t new_value) override
	Update the system variable to the new value. More...
bool	update_var (THD *thd, std::string_view name, bool new_value) override
	Update the system variable to the new value. More...
Public Member Functions inherited from ib::Sys_var_handler_interface
virtual	~Sys_var_handler_interface ()=default
	Default destructor. More...

Private Member Functions
bool	buffer_size_update (uint64_t value)
	Update the innodb_log_buffer_size system variable. More...
void	writer_threads_update (bool value)
	Update the innodb_log_writer_threads system variable. More...
bool	capacity_update (THD *thd, std::string_view var_name, uint64_t value)
	Update the innodb_redo_log_capacity system variable. More...
bool	log_write_ahead_size_update (THD *thd, std::string_view var_name, uint64_t value)

Private Attributes
Handler &	m_handler

Detailed Description

This class implements the handling of redo log related system variables.

Constructor & Destructor Documentation

Sys_var_handler()

ib::redo::Sys_var_handler::Sys_var_handler ( Handler &  handler )

inline

~Sys_var_handler()

ib::redo::Sys_var_handler::~Sys_var_handler ( )

override

Member Function Documentation

buffer_size_update()

bool ib::redo::Sys_var_handler::buffer_size_update ( uint64_t  value )

private

Update the innodb_log_buffer_size system variable.

capacity_update()

bool ib::redo::Sys_var_handler::capacity_update ( THD *  thd, std::string_view  var_name, uint64_t  value  )

private

Update the innodb_redo_log_capacity system variable.

log_write_ahead_size_update()

bool ib::redo::Sys_var_handler::log_write_ahead_size_update ( THD *  thd, std::string_view  var_name, uint64_t  value  )

private

update_var() [1/2]

bool ib::redo::Sys_var_handler::update_var ( THD *  thd, std::string_view  name, bool  new_value  )

overridevirtual

Update the system variable to the new value.

Parameters

[in]	thd	THD object, may be used to print warning
[in]	name	The system variable name
[in]	new_value	The value to be updated

Returns

true System variable was updated successfully

false Otherwise

Implements ib::Sys_var_handler_interface.

update_var() [2/2]

bool ib::redo::Sys_var_handler::update_var ( THD *  thd, std::string_view  name, uint64_t  new_value  )

overridevirtual

Update the system variable to the new value.

Parameters

[in]	thd	THD object, may be used to print warning
[in]	name	The system variable name
[in]	new_value	The value to be updated

Returns

true System variable was updated successfully

false Otherwise

Implements ib::Sys_var_handler_interface.

writer_threads_update()

void ib::redo::Sys_var_handler::writer_threads_update ( bool  value )

private

Update the innodb_log_writer_threads system variable.

Member Data Documentation

m_handler

Handler& ib::redo::Sys_var_handler::m_handler

private

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

• storage/innobase/include/log0sys_var_handler.h
• storage/innobase/log/log0sys_var_handler.cc