FileLockStrategy Class Reference

Inheritance diagram for FileLockStrategy:

Public Member Functions
	__construct ($subject)
	__destruct ()
	acquire ($mode=self::LOCK_CAPABILITY_EXCLUSIVE)
	release ()
	isAcquired ()
	destroy ()

Static Public Member Functions
static	getPriority ()
static	getCapabilities ()

Public Attributes
const	FILE_LOCK_FOLDER = 'typo3temp/locks/'
Public Attributes inherited from LockingStrategyInterface
const	LOCK_CAPABILITY_EXCLUSIVE = 1
const	LOCK_CAPABILITY_SHARED = 2
const	LOCK_CAPABILITY_NOBLOCK = 4

Protected Attributes
	$filePointer
	$filePath
	$isAcquired = false

Detailed Description

flock() locking

Definition at line 25 of file FileLockStrategy.php.

Constructor & Destructor Documentation

__construct

(

$subject

)

Parameters

string

$subject

ID to identify this lock in the system

Exceptions

LockCreateException

if the lock could not be created

Implements LockingStrategyInterface.

Definition at line 48 of file FileLockStrategy.php.

References GeneralUtility\mkdir().

__destruct

(

)

Destructor: Releases lock automatically when instance is destroyed and release resources

Definition at line 74 of file FileLockStrategy.php.

References FileLockStrategy\release().

Member Function Documentation

acquire

(

$mode = self::LOCK_CAPABILITY_EXCLUSIVE

)

Try to acquire an exclusive lock

Parameters

int

$mode

LOCK_CAPABILITY_EXCLUSIVE or LOCK_CAPABILITY_SHARED or self::LOCK_CAPABILITY_NOBLOCK

Returns

bool Returns TRUE if the lock was acquired successfully

Exceptions

LockAcquireException	if the lock could not be acquired
LockAcquireWouldBlockException	if the acquire would have blocked and NOBLOCK was set

Implements LockingStrategyInterface.

Definition at line 87 of file FileLockStrategy.php.

References FileLockStrategy\$isAcquired, GeneralUtility\fixPermissions(), and FileLockStrategy\isAcquired().

destroy

(

)

Destroys the resource associated with the lock

Returns

void

Implements LockingStrategyInterface.

Definition at line 179 of file FileLockStrategy.php.

static getCapabilities ( )

static

Returns

int LOCK_CAPABILITY_* elements combined with bit-wise OR

Implements LockingStrategyInterface.

Definition at line 156 of file FileLockStrategy.php.

static getPriority ( )

static

Returns

int Returns a priority for the method. 0 to 100, 100 is highest

Implements LockingStrategyInterface.

Definition at line 148 of file FileLockStrategy.php.

isAcquired

(

)

Get status of this lock

Returns

bool Returns TRUE if lock is acquired by this locker, FALSE otherwise

Implements LockingStrategyInterface.

Definition at line 140 of file FileLockStrategy.php.

References FileLockStrategy\$isAcquired.

Referenced by FileLockStrategy\acquire(), and FileLockStrategy\release().

release

(

)

Release the lock

Returns

bool Returns TRUE on success or FALSE on failure

Implements LockingStrategyInterface.

Definition at line 119 of file FileLockStrategy.php.

References FileLockStrategy\isAcquired().

Referenced by FileLockStrategy\__destruct().

Member Data Documentation

$filePath

protected

Definition at line 37 of file FileLockStrategy.php.

$filePointer

protected

Definition at line 32 of file FileLockStrategy.php.

$isAcquired = false

protected

Definition at line 42 of file FileLockStrategy.php.

Referenced by FileLockStrategy\acquire(), and FileLockStrategy\isAcquired().

const FILE_LOCK_FOLDER = 'typo3temp/locks/'

Definition at line 27 of file FileLockStrategy.php.