The SyncSemaphore class

(PECL sync >= 1.0.0)

简介

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.

类摘要

SyncSemaphore {

/* 方法 */

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

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

public 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

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The SyncSemaphore class

简介

类摘要

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User Contributed Notes