Don't write code like that. Polling when there's a perfectly good blocking system call is a huge waste of CPU and I/O resources. If you actually had an application with any non-trivial lock contention, this sort of code will probably cripple your server.

In reply to Re^2: How to make sure that non-Perl programs will respect Perl's file locking? by kscaldef
in thread How to make sure that non-Perl programs will respect Perl's file locking? by glasswalk3r

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