Threaded::synchronized

(PECL pthreads >= 2.0.0)

Threaded::synchronized — 同步控制

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)

User Contributed Notes

john dot wellesz at teaser dot fr 19-Mar-2014 10:22


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.