Bulgaria PHP Conference 2019

pht\AtomicInteger::lock

(PECL pht >= 0.0.1)

pht\AtomicInteger::lockAcquires the atomic integer's mutex lock

Beschreibung

public pht\AtomicInteger::lock ( void ) : void

This method will acquire the mutex lock associated with the atomic integer. The mutex lock only needs to be acquired when needing to group together multiple operations.

The mutex locks of the atomic values are reentrant safe. It is therefore valid for the same thread to reacquire a mutex lock that it has already acquired.

Parameter-Liste

Diese Funktion besitzt keine Parameter.

R├╝ckgabewerte

No return value.

Beispiele

Beispiel #1 Grouping together an atomic integer's operations (requiring a mutex lock)

<?php

use pht\AtomicInteger;

$atomicInteger = new AtomicInteger(2);

// assumes $atomicInteger is being used by multiple threads
$atomicInteger->lock();
$atomicInteger->set($atomicInteger->get() * 2); // double the value
$atomicInteger->unlock();

var_dump($atomicInteger->get());

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

int(4)

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