Threaded::synchronized

(PECL pthreads >= 2.0.0)

Threaded::synchronizedSynchronization

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

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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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