The explain_gettimeofday_or_die function
is used to call the gettimeofday(2) system
call. On failure an explanation will be
printed to stderr,
obtained from explain_gettimeofday(3),
and then the process terminates
by calling exit(EXIT_FAILURE).
This function is intended to be used in a fashion
similar to the following example:
explain_gettimeofday_or_die(tv, tz);
tv
The tv, exactly as to be passed to the gettimeofday(2) system call.
tz
The tz, exactly as to be passed to the gettimeofday(2) system call.
Returns:
This function only returns on success.
On failure, prints an explanation and exits.