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 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.

Class synopsis

class SyncSemaphore {

/* Methods */

public function __construct(string $name = ?, int $initialval = 1, bool $autounlock = true)

public function lock(int $wait = -1): bool

public function unlock(int &$prevcount = ?): bool

}

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

The SyncSemaphore class

Introduction

Class synopsis

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