Checking Directory contents in Perl

[onkar]

I have a situation wherein , if the user puts a file in the 
directory I need to do processing on the file , and rest of the time s
+leep(). How do I detect that there is a change in directory content e
+fficiently ( i.e., without listing ).


 while(1)
 {
    probe_dir_changes(......); 
    sleep(1);
 }

[stefbv]

Win32::ChangeNotify

or

Linux::Inotify2