Neos\Flow\ResourceManagement\Streams\ResourceStreamWrapper::lock PHP Метод

lock() публичный Метод

This method is called in response to flock(), when file_put_contents() (when flags contains LOCK_EX), stream_set_blocking(). $operation is one of the following: LOCK_SH to acquire a shared lock (reader). LOCK_EX to acquire an exclusive lock (writer). LOCK_NB if you don't want flock() to block while locking.

public lock ( integer $operation ) : boolean
$operation	integer	One of the LOCK_* constants
Результат	boolean	TRUE on success or FALSE on failure.