Tracking the execution of Function Modules

Hi there,

for ABAP reports there is an enhancement S38MREP1 'Exit at Start report' in transaction CMOD available which could be used e. g. to track the execution at least of executable programs (TRDIR-SUBC = 1); limitation: it is executed before the selection screen, so no guarantee that a certain program is really submitted afterwards.

Is there something similar available in release 4.5B (or in any higher release?) or how can I track the execution of function modules in the customer name space in a smart way?

Thanks in advance for any support,

Peter