Threaded
PHP Manual

Threaded::synchronized

(PECL pthreads >= 2.0.0)

Threaded::synchronizedSynchronization

Descrição

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

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

Parâmetros

block

The block of code to execute

...

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

Valor Retornado

The return value from the block

Exemplos

Exemplo #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());
?>

O exemplo acima irá imprimir:

bool(true)


Threaded
PHP Manual