fil::detail::Open_files_limit Class Reference

#include <open_files_limit.h>

Classes
class	Dynamic_procedures

Public Member Functions
	Open_files_limit (size_t limit)
	~Open_files_limit ()
size_t	get_limit () const
bool	set_desired_limit (size_t desired)
void	commit_desired_limit ()
void	revert_desired_limit ()

Private Attributes
Dynamic_procedures	m_dynamic_procedures
std::atomic< size_t >	m_limit
	The maximum limit for opened files. More...
size_t	m_old_limit
	The old value of the limit when a change is in progress. More...
std::atomic_flag	m_is_change_in_progress
	Atomic flag stating if a change of the limit is in progress. More...

Static Private Attributes
static constexpr int	MINIMUM_VALID_VALUE = 10

Constructor & Destructor Documentation

Open_files_limit()

fil::detail::Open_files_limit::Open_files_limit ( size_t  limit )

inline

~Open_files_limit()

fil::detail::Open_files_limit::~Open_files_limit ( )

inline

Member Function Documentation

commit_desired_limit()

void fil::detail::Open_files_limit::commit_desired_limit ( )

inline

get_limit()

size_t fil::detail::Open_files_limit::get_limit ( ) const

inline

revert_desired_limit()

void fil::detail::Open_files_limit::revert_desired_limit ( )

inline

set_desired_limit()

bool fil::detail::Open_files_limit::set_desired_limit ( size_t  desired )

inline

Member Data Documentation

m_dynamic_procedures

Dynamic_procedures fil::detail::Open_files_limit::m_dynamic_procedures

private

m_is_change_in_progress

std::atomic_flag fil::detail::Open_files_limit::m_is_change_in_progress

private

Atomic flag stating if a change of the limit is in progress.

Used to disallow multiple threads from processing a limit change.

m_limit

std::atomic<size_t> fil::detail::Open_files_limit::m_limit

private

The maximum limit for opened files.

fil_n_files_open should not exceed this. It can be changed dynamically by Fil_system::set_open_files_limit() method.

m_old_limit

size_t fil::detail::Open_files_limit::m_old_limit

private

The old value of the limit when a change is in progress.

It is used in case we need to rollback.

MINIMUM_VALID_VALUE

constexpr int fil::detail::Open_files_limit::MINIMUM_VALID_VALUE = 10

staticconstexprprivate

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

• storage/innobase/include/detail/fil/open_files_limit.h