Threaded::synchronized

(PECL pthreads >= 2.0.0)

Threaded::synchronized — Synchronization

说明

public mixed Threaded::synchronized ( Closure $block [, mixed $... ] )

在发起调用的线程上下文中获取对象同步锁，然后同步执行代码块

参数

block: 要执行的代码块
...: 传送给代码块的不定长参数

返回值

代码块的返回值

范例

Example #1 同步

  <?php
 class  My  extends  Thread  {
    public function  run () {
         $this -> synchronized (function( $thread ){
            if (! $thread -> done )
                 $thread -> wait ();
        },  $this );
    }
}
 $my  = new  My ();
 $my -> start ();
 $my -> synchronized (function( $thread ){
     $thread -> done  =  true ;
     $thread -> notify ();
},  $my );
 var_dump ( $my -> join ());
 ?>

以上例程会输出：

bool(true)

用户评论:

[#1] john dot wellesz at teaser dot fr [2014-03-19 13:22:13]

Threaded::synchronized() allows you to safely set or read synchronization conditions and act upon them (using ::wait() and ::notify()) knowing that only one call to synchronized() on the referenced object can be executed at a particular time, other calls from different thread contexts will block until the path is cleared by a call to ::wait() inside your ::Synchronized() closure.