Classes and Functions

Hello, Is there a way to see what objects and functions a script loaded/required/used? I could recursively loop through the globals, but if objects were unset, then i may miss some. I could make a 'tracking' object and every time i load/include a file (which contains a class def or a function def) to add that file to the tracking object...but it would be nice if i didn't have to modify my existing code to see which objects and functions a script actually used, or at least, requested and loaded into memory. Thanks in advance, Daniel Kolbo `