pht\Queue::lock
(PECL pht >= 0.0.1)
pht\Queue::lock — Acquires the queue's mutex lock
Description
public pht\Queue::lock
(
) : void
This method will acquire the mutex lock associated with the queue. The mutex lock should always be acquired when manipulating the queue if it is being used by multiple threads.
The mutex locks of the Inter-Thread Communication (ITC) data structures are not reentrant. Attempting to reacquire an already-acquired mutex lock by the same thread will therefore cause a deadlock.
Liste de paramètres
Cette fonction ne contient aucun paramètre.
Valeurs de retour
No return value.
Exemples
Exemple #1 Locking a queue's mutex lock
<?php
use pht\{Thread, Queue};
$thread = new Thread();
$queue = new Queue();
$thread->addFunctionTask(function ($queue) {
$queue->lock();
$queue->push(1);
$queue->unlock();
}, $queue);
$thread->start();
// $queue is currently being used by multiple threads
$queue->lock();
$queue->push(1);
$queue->unlock();
$thread->join();
// $queue is only being used in this thread now, so no need to lock it
while ($queue->size()) {
var_dump($queue->pop());
}
L'exemple ci-dessus va afficher :
int(1) int(1)
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