LockFile()

Description

Locks a specified filehandle, causing the process to block until the file is available. Note that to write-lock a file, the file must be opened for writing; to read-lock a file, the file must be opened for reading.

Synopsis

require 'FileUtils.pl';
...
&AppUtils::LockFile($fh, $lockType);

Arguments

Argument	Meaning
$fh	Reference to the file handle to lock.
$lockType	The type of lock with which to lock the file. Specify READ or WRITE. The default is WRITE.

Returns

Value	Meaning
0 but true	Success.
undefined	Failure.