Mutex::lock

(PECL pthreads >= 2.0.0)

Acquire Mutex

final public static boolean Mutex::lock ( long $mutex )

Attempt to lock the Mutex for the caller.

An attempt to lock a Mutex owned (locked) by another Thread will result in blocking.

Parameters:

mutex

A handle returned by a previous call to Mutex::create().

Returns:

A boolean indication of success.

Examples:

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)

Links:

http://php.net/manual/en/mutex.lock.php

doc_php

2016-02-24 16:05:31

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