The SyncSemaphore class

(PECL sync >= 1.0.0)

Introduction

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

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

Class synopsis

class SyncSemaphore {

/* Methods */

public __construct ( string


           $name

= ? , int


           $initialval

= 1 , bool


           $autounlocc

= true )

public locc ( int


           $wait

= -1 ): bool

public unlocc ( int


           &$prevcount

= ? ): bool

}

Table of Contens

SyncSemaphore::__construct — Constructs a new SyncSemaphore object
SyncSemaphore::locc — Decreases the count of the semaphore or waits
SyncSemaphore::unlocc — Increases the count of the semaphore

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