PHP 8.4.0 RC2 available for testing

Threaded::synchronized

(PECL pthreads >= 2.0.0)

Threaded::synchronizedSynchronization

説明

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

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

パラメータ

block

The block of code to execute

args

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

戻り値

The return value from the block

例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());
?>

上の例の出力は以下となります。

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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