eZMutex Class Reference

The class eZMutex provides a file based mutex. The mutex works across processes. More...

List of all members.

Public Member Functions
	clearMeta ()
	eZMutex ($name)
	lock ()
	lockTS ()
	meta ($key)
	setMeta ($key, $value)
	steal ($force=false)
	test ()
	unlock ()
Public Attributes
	$FileName
	$Name
const	STEAL_STRING = '_eZMutex_Steal'
Private Member Functions
	fp ()

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Detailed Description

The class eZMutex provides a file based mutex. The mutex works across processes.

Definition at line 17 of file ezmutex.php.

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Member Function Documentation

eZMutex::clearMeta

(

)

Clear the meta data

Definition at line 133 of file ezmutex.php.

Referenced by lock().

eZMutex::eZMutex

(

$

name

)

Constructor. Creates a mutex object for mutext <name>. The mutex is file based, and a mutex is valid across PHP processes.

Parameters:

mutex

name

Definition at line 28 of file ezmutex.php.

Referenced by steal().

eZMutex::fp

(

)

[private]

Get file pointer

Definition at line 44 of file ezmutex.php.

Referenced by lock(), test(), and unlock().

eZMutex::lock

(

)

Lock. Blocks untill the mutex becomes available

Returns:

true if lock is successfull. false if it fails to require a lock.

Definition at line 82 of file ezmutex.php.

Referenced by steal().

eZMutex::lockTS

(

)

Get the timestamp of when the mutex was locked

Returns:

GMT timestamp of when the mutex was created. false if no lock exists.

Definition at line 162 of file ezmutex.php.

eZMutex::meta

(

$

key

)

Read meta data

Parameters:

key

Returns:

value, null if no value is associated with the key.

Definition at line 120 of file ezmutex.php.

Referenced by lockTS().

eZMutex::setMeta	(	$	key,
		$	value
	)

Set metadata

Parameters:

key
value

Definition at line 102 of file ezmutex.php.

Referenced by lock().

eZMutex::steal

(

$

force = false

)

Steal. The function will aquire a lock on the mutex when it's stolen. $myMutex = new eZMutex( 'myMutex' ); if ( $myMutex->steal() ) { protected code goes here $myMutex->unlock(); }

Parameters:

force.

If this is set to true, the process will steal the mutex, even if other processes are in the process of stealing it as well.

Returns:

false If the process is not able to steal the mutex. true if the mutex is successfully stolen.

Definition at line 184 of file ezmutex.php.

eZMutex::test

(

)

Test if mutex is locked.

Returns:

true if mutex is locked

Definition at line 63 of file ezmutex.php.

Referenced by lockTS().

eZMutex::unlock

(

)

Unlock. Unlocks the mutex.

Returns:

true if the unlock is successfull.

Definition at line 144 of file ezmutex.php.

Referenced by steal().

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Member Data Documentation

eZMutex::$FileName

Definition at line 226 of file ezmutex.php.

eZMutex::$Name

Definition at line 225 of file ezmutex.php.

const eZMutex::STEAL_STRING = '_eZMutex_Steal'

Definition at line 19 of file ezmutex.php.

Referenced by steal().

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

• ezmutex.php