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PHP Manual :: SyncSemaphore::lock



SyncSemaphore::__construct || SyncSemaphore::unlock || SyncSemaphore || PHP Manual

(PECL sync >= 1.0.0)

SyncSemaphore::lockDecreases the count of the semaphore or waits

Description

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

Decreases the count of a SyncSemaphore object or waits until the semaphore becomes non-zero.

Parameters

wait

The number of milliseconds to wait for the semaphore. A value of -1 is infinite.

Return Values

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

Examples

Example #1 SyncSemaphore::lock() example

<?php
$semaphore 
= new SyncSemaphore("LimitedResource_2clients"2);

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

    exit();
}

/* ... */

$semaphore->unlock();
?>

See Also



SyncSemaphore::__construct || SyncSemaphore::unlock || SyncSemaphore || PHP Manual
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