PHP Manual: Release Mutex

Description

final public static boolean Mutex::unlock ( long $mutex [, boolean $destroy ] )

Attempts to unlock the Mutex for the caller, optionally destroying the Mutex handle. The calling thread should own the Mutex at the time of the call.

Parameters

mutex: A handle returned by a previous call to Mutex::create.
destroy: When true pthreads will destroy the Mutex after a successful unlock.

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 **/
$mutex = Mutex::create();
/** You can now lock the mutex in any context **/
var_dump(Mutex::lock($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)