PHP 7.1.2 Released

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

Rückgabewerte

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
2 years 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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