PHP Manual
SyncReaderWriter
Waits for a read lock

SyncReaderWriter::readlock

(PECL sync >= 1.0.0)

SyncReaderWriter::readlock — Waits for a read lock

说明

public SyncReaderWriter::readlock ([ int $wait = -1 ] ) : bool

Obtains a read 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::readlock() example

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

参见

SyncReaderWriter::readunlock() - Releases a read lock

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