Acl_cache_lock_guard Class Reference

Lock guard for ACL Cache. More...

#include <sql_auth_cache.h>

Public Member Functions
	Acl_cache_lock_guard (THD *thd, Acl_cache_lock_mode mode)
	Acl_cache_lock_guard constructor. More...
	~Acl_cache_lock_guard ()
	Acl_cache_lock_guard destructor. More...
bool	lock (bool raise_error=true)
	Explicitly take lock on Acl_cache_lock_cache object. More...
void	unlock ()
	Explicitly unlock all acquired locks. More...

Private Member Functions
bool	already_locked ()
	Check whether lock is already obtained or not. More...

Private Attributes
THD *	m_thd
	Handle to THD object. More...
Acl_cache_lock_mode	m_mode
	Lock mode. More...
bool	m_locked
	Lock status. More...

Detailed Description

Lock guard for ACL Cache.

Destructor automatically releases the lock.

Constructor & Destructor Documentation

Acl_cache_lock_guard()

Acl_cache_lock_guard::Acl_cache_lock_guard	(	THD *	thd,
		Acl_cache_lock_mode	mode
	)

Acl_cache_lock_guard constructor.

Parameters

[in]	thd	THD Handle.
[in]	mode	Lock mode

~Acl_cache_lock_guard()

Acl_cache_lock_guard::~Acl_cache_lock_guard ( )

inline

Acl_cache_lock_guard destructor.

Release lock(s) if taken

Member Function Documentation

already_locked()

bool Acl_cache_lock_guard::already_locked ( )

private

Check whether lock is already obtained or not.

Returns

lock status

Return values

true	Lock has already been taken.
false	No lock is taken with this Acl_cache_lock_guard object

lock()

bool Acl_cache_lock_guard::lock

(

bool

raise_error = true

)

Explicitly take lock on Acl_cache_lock_cache object.

If cache was already locked, just return.

Parameters

[in]

raise_error

Whether to raise error if we fail to acquire lock

Returns

status of lock

Return values

true	Lock was acquired/already acquired.
false	There was some problem acquiring lock.

unlock()

void Acl_cache_lock_guard::unlock

(

)

Explicitly unlock all acquired locks.

Member Data Documentation

m_locked

bool Acl_cache_lock_guard::m_locked

private

Lock status.

m_mode

Acl_cache_lock_mode Acl_cache_lock_guard::m_mode

private

Lock mode.

m_thd

THD* Acl_cache_lock_guard::m_thd

private

Handle to THD object.

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

• sql/auth/sql_auth_cache.h
• sql/auth/sql_auth_cache.cc