Library for tracking what is used

Is there a library to log what files and functions are used to load a particular view?  I wouldn't want this to be visible by users, just a log that shows something like:

IP opened URL.  Controller loaded, functions called, model loaded, functions called, view loaded, etc.

It would be very helpful in picking through someone else's work when they didn't document anything.

Logging, not so much but Ci does have profiling which can give you a lot of handy info. Have a look at https://codeigniter.com/user_guide/gener...iling.html