SyncMutex
PHP マニュアル

SyncMutex::lock

Waits for an exclusive lock

説明

public bool SyncMutex::lock(int $wait = -1)

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

パラメータ

wait

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

戻り値

成功した場合に true を、失敗した場合に false を返します。

例

例1 SyncMutex::lock example

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

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

    exit();
}

/* ... */

$mutex->unlock();
?>

参考

  • SyncMutex::unlock