PHP Manual
Sync
The SyncSemaphore class

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

}

php cairo the cairoextend class php cairo the cairomatrix class php 日期/时间 the datetimezone class php dom the domnamednodemap class php data structures the set class php event the eventhttpconnection class php 迭代器 the globiterator class php hrtime the hrtime unit class php intl the intltimezone class php libxml the libxmlerror class php 核心类 the mongocursor class php mongodb driver the mongodb driver command class php sync the syncevent class php sync the syncmutex class php sync the syncreaderwriter class php sync the syncsemaphore class php sync the syncsharedmemory class php uopz 函数 extend a class at runtime php uopz 函数 sets value of existing class or instance property php using phar archives using phar archives the phar and phardata class

The SyncSemaphore class

简介

类摘要

Table of Contents