Plugin_waitlock Class Reference

#include <plugin_utils.h>

Public Member Functions
	Plugin_waitlock (mysql_mutex_t *lock, mysql_cond_t *cond, PSI_mutex_key lock_key, PSI_cond_key cond_key)
	Constructor. More...
virtual	~Plugin_waitlock ()
	Destructor. More...
void	set_wait_lock (bool status)
	Set condition to block or unblock the calling threads. More...
void	start_waitlock ()
	Blocks the calling thread. More...
void	end_wait_lock ()
	Release the blocked thread. More...
bool	is_waiting ()
	Checks whether thread should be blocked. More...

Private Attributes
mysql_mutex_t *	wait_lock
	the mutex lock for access to class and condition variables More...
mysql_cond_t *	wait_cond
	the condition variable calling thread will wait on More...
PSI_mutex_key	key_lock
	mutex instrumentation key More...
PSI_cond_key	key_cond
	cond instrumentation key More...
bool	wait_status
	determine whether calling thread should be blocked or not More...

Constructor & Destructor Documentation

Plugin_waitlock()

Plugin_waitlock::Plugin_waitlock ( mysql_mutex_t *  lock, mysql_cond_t *  cond, PSI_mutex_key  lock_key, PSI_cond_key  cond_key  )

inline

Constructor.

Instantiate the mutex lock, mutex condition, mutex and condition key.

Parameters

lock	the mutex lock for access to class and condition variables
cond	the condition variable calling thread will wait on
lock_key	mutex instrumentation key
cond_key	cond instrumentation key

~Plugin_waitlock()

virtual Plugin_waitlock::~Plugin_waitlock ( )

inlinevirtual

Destructor.

Destroys the mutex and condition objects.

Member Function Documentation

end_wait_lock()

void Plugin_waitlock::end_wait_lock ( )

inline

Release the blocked thread.

is_waiting()

bool Plugin_waitlock::is_waiting ( )

inline

Checks whether thread should be blocked.

Return values

true	thread should be blocked
false	thread should not be blocked

set_wait_lock()

void Plugin_waitlock::set_wait_lock ( bool  status )

inline

Set condition to block or unblock the calling threads.

Parameters

[in]

status

if the thread should be blocked or not

start_waitlock()

void Plugin_waitlock::start_waitlock ( )

inline

Blocks the calling thread.

Member Data Documentation

key_cond

PSI_cond_key Plugin_waitlock::key_cond

private

cond instrumentation key

key_lock

PSI_mutex_key Plugin_waitlock::key_lock

private

mutex instrumentation key

wait_cond

mysql_cond_t* Plugin_waitlock::wait_cond

private

the condition variable calling thread will wait on

wait_lock

mysql_mutex_t* Plugin_waitlock::wait_lock

private

the mutex lock for access to class and condition variables

wait_status

bool Plugin_waitlock::wait_status

private

determine whether calling thread should be blocked or not

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

• plugin/group_replication/include/plugin_utils.h