PHP Unconference Europe 2015

Threaded::synchronized

(PECL pthreads >= 2.0.0)

Threaded::synchronizedSynchronization

Beschreibung

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

Executes the block while retaining the referenced objects synchronization lock for the calling context

Parameter-Liste

block

The block of code to execute

...

Variable length list of arguments to use as function arguments to the block

R├╝ckgabewerte

The return value from the block

Beispiele

Beispiel #1 Synchronizing

<?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());
?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

bool(true)

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User Contributed Notes 1 note

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john dot wellesz at teaser dot fr
7 months ago
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.
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