> [tmfe.cxx:1033:TMFE::Sleep,ERROR] select() returned -1, errno 22 (Invalid argument).

The very original copy of this function had an error and was spewing out this error quite often,
this was a missing handler for EINTR.

Now it looks like we are missing a handler for EINVAL.

Most likely sleep is called with a funny sleep time value that fills struct timeval with
values select() does not like.

I see Ben added a check for negative sleep times, and this is good.

I think I will do these changes:

a) add an error message for negative sleep time, I think user should never call ::Sleep with negative or zero sleep times and 
if they do it is a bug and they should fix it, the error message will inform them so.

b) add a handler for EINVAL, which will report the requested sleep time and the values in struct timeval

K.O.