So you need to monitor a directory for file creation events, right? Googling similar quiestion reveals some links which describe the way of solving the problem: File::ChangeNotify, described as cross-platform, File::Monitor, also passing tests on all operating systems, Win32::ChangeNotify, SGI::FAM, using the FAM daemon for *nix-like systems, Linux::Inotify2 and Linux::Inotify.