MUTEX.TRYLOCK(3) 1 MUTEX.TRYLOCK(3)
Mutex::trylock - Attempt to Acquire Mutex
SYNOPSIS
finalpublicstatic boolean Mutex::trylock (long $mutex)
DESCRIPTION
Attempt to lock the Mutex for the caller without blocking if the Mutex is owned (locked) by another Thread.
PARAMETERS
o $mutex
-A handle returned by a previous call to Mutex.create(3).
RETURN VALUES
A boolean indication of success.
EXAMPLES
Example #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);
?>
The above example will output:
bool(true)
bool(true)
PHP Documentation Group MUTEX.TRYLOCK(3)
