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
}

目录