StudipLock Class Reference

Collaboration diagram for StudipLock:

Static Public Member Functions
static	getCurrent ()
static	get ($lockname, $timeout=10)
static	isFree ($lockname)
static	release ()
static	lockname ($lockname)

Member Function Documentation

static get (   $lockname,   $timeout = 10  )

static

Tries to obtain a lock with a name given by the string $lockname, using a timeout of $timeout seconds. Returns 1 if the lock was obtained successfully, 0 if the attempt timed out (for example, because another client has previously locked the name), or NULL if an error occurred If a name has been locked by one client, any request by another client for a lock with the same name is blocked.

Parameters

string	$lockname
number	$timeout	in seconds

Exceptions

UnexpectedValueException

if there is already an active lock

Returns

integer 1 if the lock was obtained successfully, 0 if the attempt timed out

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static getCurrent ( )

static

returns the name of the current active lock

Returns

string name of active lock

static isFree (   $lockname )

static

check if lock with given name is available

Parameters

string

$lockname

Returns

integer 1 if lock is available

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static lockname (   $lockname )

static

prepends the name of current database to lockname because locks are server-wide

Parameters

string

$lockname

Returns

string

static release ( )

static

release the current lock

Returns

integer 1 if the lock could be released

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

• lib/classes/StudipLock.class.php