Do remember that file locking is not supported on some platforms, is not a protection against applications which don't use the same flavor of file locking, and even when all that is okay, it's still just advisory in nature.

To perform a stronger locking scheme, just rename the file to something else during your operation. Of course, if your process crashes and never renames the file, it can be a mess to recover.

--
[ e d @ h a l l e y . c c ]

In reply to Re: IO::Zlib and flock by halley
in thread IO::Zlib and flock by hardburn

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