Is there a module on CPAN one can use for debugging IO calls on file handles? Sometimes I need to see what happens on input-output on a particular handle, and sometimes a handle gets mysteriously close()'d and I want to find easily where it has happened. Before I tackled that by overloading CORE::GLOBAL methods, but I'm thinking, surely someone made a nice module for this purpose. I just can't find it.

Thank you!