Threaded::synchronized

(PECL pthreads >= 2.0.0)

Threaded::synchronized — Synchronization

Description

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

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

Parameters

block: The block of code to execute
args: Variable length list of arguments to use as function arguments to the block

Return Values

The return value from the block

Examples

Example #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());
?>

The above example will output:

bool(true)

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User Contributed Notes 1 note

down

john dot wellesz at teaser dot fr ¶

10 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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