The 4th Annual China PHP Conference

The SyncSemaphore class

(PECL sync >= 1.0.0)


A cross-platform, native implementation of named and unnamed sempahore objects.

A semaphore restricts access to a limited resource to a limited number of instances. Semaphores differ from mutexes in that they can allow more than one instance to access a resource at one time while a mutex only allows one instance at a time.

Sinopsisul clasei

SyncSemaphore {
/* Metode */
public __construct ([ string $name [, integer $initialval [, bool $autounlock ]]] )
public bool lock ([ integer $wait ] )
public bool unlock ([ integer &$prevcount ] )


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