SyncMutex::lock

(PECL sync >= 1.0.0)

SyncMutex::lock — Waits for an exclusive lock

설명

public bool SyncMutex::lock ([ integer $wait ] )

Obtains an exclusive lock on a SyncMutex object. If the lock is already acquired, then this increments an internal counter.

인수

wait: The number of milliseconds to wait for the exclusive lock. A value of -1 is infinite.

반환값

A boolean of TRUE if the lock was obtained, FALSE otherwise.

예제

Example #1 SyncMutex::lock() example


<?php
$mutex = new SyncMutex("UniqueName");

if (!$mutex->lock(3000))
{
    echo "Unable to lock mutex.";

    exit();
}

/* ... */

$mutex->unlock();
?>

참고

SyncMutex::unlock() - Unlocks the mutex