Php/docs/class.syncsemaphore
来自菜鸟教程
(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 {
public __construct
([ string $name
[, int $initialval = 1
[, bool $autounlock = true
]]] )
public lock
([ int $wait = -1
] ) : bool
public unlock
([ int &$prevcount
] ) : bool
}
Table of Contents
- 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
/* 方法 */