POSIX_TIMER_ARMED
timer->it_status = POSIX_TIMER_ARMED;
if (iv && timer->it_status != POSIX_TIMER_ARMED)
timr->it_status = POSIX_TIMER_ARMED;
if (iv && timr->it_status != POSIX_TIMER_ARMED)
timr->it_status = POSIX_TIMER_ARMED;