sched_rr_get_interval
int sched_rr_get_interval(pid_t, struct timespec *)
int sched_rr_get_interval(pid_t, struct timespec50 *);
__warn_references(sched_rr_get_interval,
sched_rr_get_interval(pid_t pid, struct timespec50 *interval)
ATF_REQUIRE(sched_rr_get_interval(-INT_MAX, &tv) != 0);
ATF_REQUIRE(sched_rr_get_interval(0, &tv1) == 0);
ATF_REQUIRE(sched_rr_get_interval(getpid(), &tv2) == 0);