nanosleep over multiple processes

Hi All,

In nanosecond precision, if I have multiple processes run nanosleep(),
how possbile they will get the same struct timespec value? both the
tv_sec and tv_nsec value. Of course the tv_sec (second) is most
possible, but how about the tv_nsec (nanosecond)?

I wan't to create a simple stupid unique id or something like that,
but with without too much effort. The unique id will be tv_sec +
tv_nsec.

Cheers!