file locking with fcntl(2)
File::FcntlLock is a module to do file locking in an object oriented
fashion using the fcntl(2) system call. This allows locks on parts of
a file as well as on the whole file and overcomes some known problems
with flock(2), on which Perls flock() function is based per default.

Maintainer: Renaud Allard <renaud@allard.it>

WWW: https://metacpan.org/release/File-FcntlLock
