SyncReaderWriter::writelock

(PECL sync >= 1.0.0)

SyncReaderWriter::writelockWaits for an exclusive write lock

说明

public bool SyncReaderWriter::writelock ([ integer $wait = -1 ] )

Obtains an exclusive write lock on a SyncReaderWriter object.

参数

wait

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

返回值

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

范例

Example #1 SyncReaderWriter::writelock() example

<?php
$readwrite 
= new SyncReaderWriter("FileCacheLock");
$readwrite->writelock();
/* ... */
$readwrite->writeunlock();
?>

参见

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