Mutex::trylock
(PECL pthreads < 3.0.0)
Mutex::trylock — Attempt to Acquire Mutex
Warnung
The Mutex class has been removed in pthreads v3.
Beschreibung
final
public
static
Mutex::trylock
(
int
$mutex
) : boolAttempt to lock the Mutex for the caller without blocking if the Mutex is owned (locked) by another Thread.
Parameter-Liste
-
mutex -
A handle returned by a previous call to Mutex::create().
Rückgabewerte
A boolean indication of success.
Beispiele
Beispiel #1 Mutex Locking and Unlocking
<?php
/** You cannot use the "new" keyword, a Mutex is not a PHP object **/
$mutex = Mutex::create();
/** You can now try to lock the mutex in any context **/
var_dump(Mutex::trylock($mutex));
/** It is invalid to attempt to destroy a locked Mutex **/
var_dump(Mutex::unlock($mutex));
/** Always destroy mutex you have created **/
Mutex::destroy($mutex);
?>
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
bool(true) bool(true)
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