Bulgaria PHP Conference 2019

pht\Queue::lock

(PECL pht >= 0.0.1)

pht\Queue::lockAcquires the queue's mutex lock

Açıklama

public pht\Queue::lock ( void ) : 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.

Değiştirgeler

Bu işlevin değiştirgesi yoktur.

Dönen Değerler

No return value.

Örnekler

Örnek 1 Locking a queue's mutex lock

<?php

use pht\{ThreadQueue};

$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());
}

Yukarıdaki örneğin çıktısı:

int(1)
int(1)

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