profiling

[Henry Cejtin]

My  feeling  is  that  the times system call, which has been in Unix since at
least version 7, is a bit obsolete and that getrusage() is  the  more  modern
interface.   Note, there isn't a race condition in getrusage() really because
the children times are ONLY for children that have  exited  (and  even  then,
only  if you have waited for them or are ignoring SIGCHLD).  Thus they aren't
going to magically change between the two calls to getrusage().