(PECL sync >= 1.0.0)
SyncMutex::__construct — Constructs a new SyncMutex object
$name
= ?)Constructs a named or unnamed countable mutex.
name
The name of the mutex if this is a named mutex object.
Note:
If the name already exists, it must be able to be opened by the current user that the process is running as or an exception will be thrown with a meaningless error message.
The new SyncMutex object.
An exception is thrown if the mutex cannot be created or opened.
Example #1 SyncMutex::__construct() named mutex with lock timeout example
<?php$mutex = new SyncMutex("UniqueName");if (!$mutex->lock(3000)){ echo "Unable to lock mutex."; exit();}/* ... */$mutex->unlock();?>
Example #2 SyncMutex::__construct() unnamed mutex example
<?php$mutex = new SyncMutex();$mutex->lock();/* ... */$mutex->unlock();?>