SyncReaderWriter::__construct
(PECL sync >= 1.0.0)
SyncReaderWriter::__construct — Constructs a new SyncReaderWriter object
Descrierea
$name = ?
, bool $autounlock = true
)Constructs a named or unnamed reader-writer object.
Parametri
-
name -
The name of the reader-writer if this is a named reader-writer object.
Notă:
If the name already exists, it must be able to be opened by the current user that the process is running as or an exception will be thrown with a meaningless error message.
-
autounlock -
Specifies whether or not to automatically unlock the reader-writer at the conclusion of the PHP script.
AvertizareIf an object is: A named reader-writer with an autounlock of FALSE, the object is locked for either reading or writing, and the PHP script concludes before the object is unlocked, then the underlying objects will end up in an inconsistent state.
Valorile întoarse
The new SyncReaderWriter object. An exception is thrown if the reader-writer cannot be created or opened.
Exemple
Example #1 SyncReaderWriter::__construct() example
<?php
$readwrite = new SyncReaderWriter("FileCacheLock");
$readwrite->readlock();
/* ... */
$readwrite->readunlock();
$readwrite->writelock();
/* ... */
$readwrite->writeunlock();
?>
A se vedea și
- SyncReaderWriter::readlock() - Waits for a read lock
- SyncReaderWriter::readunlock() - Releases a read lock
- SyncReaderWriter::writelock() - Waits for an exclusive write lock
- SyncReaderWriter::writeunlock() - Releases a write lock
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