Differentiating calls to the same function

[Thierry Lam]

Consider the following example:

Calling function stuff()
Calling function doThing()
Calling function stuff()

In my log file, is there some feature which allows me to do the
following:

(date-time) 1st call to stuff()
(date-time) 1st call to doThing()
(date-time) 2nd call to stuff()


Thanks
Thierry