Re^2: how to convert lexical filehand so flock will work with it

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Re^3: how to convert lexical filehand so flock will work with it by davido (Cardinal) on Jul 05, 2013 at 07:42 UTC
Perl::Critic is probably wrong on this one... or at least, insensitive to valid use cases. That's a frequent issue with Perl::Critic; while the book was intended to encourage thoughtfulness with respect to best practices, the module doesn't do a very good job of trying to understand why your situation might justify using an item that it considers to be a violation. The best practice really is to know what you're doing, and why. The rest is just food for thought. By the way, you may find this slide interesting: MJD "Only one process running at a time", from Mark Jason Dominus's File Locking Tricks and Traps talk. Update: I almost forgot to mention -- this employs the "lock the DATA filehandle" trick, and allows you to avoid dealing directly with flocking: Sys::RunAlone. Dave	[reply]

Replies are listed 'Best First'.

Re^3: how to convert lexical filehand so flock will work with it
by davido (Cardinal) on Jul 05, 2013 at 07:42 UTC

Perl::Critic is probably wrong on this one... or at least, insensitive to valid use cases. That's a frequent issue with Perl::Critic; while the book was intended to encourage thoughtfulness with respect to best practices, the module doesn't do a very good job of trying to understand why your situation might justify using an item that it considers to be a violation. The best practice really is to know what you're doing, and why. The rest is just food for thought.

By the way, you may find this slide interesting: MJD "Only one process running at a time", from Mark Jason Dominus's File Locking Tricks and Traps talk.

Update: I almost forgot to mention -- this employs the "lock the DATA filehandle" trick, and allows you to avoid dealing directly with flocking: Sys::RunAlone.

Dave

[reply]