FreeBSD Manual Pages
- timerfd(2), timerfd_create(2), timerfd_gettime(2), timerfd_settime(2)
- timers with file descriptor semantics
- iv_fd_register(3), iv_fd_register_try(3), iv_fd_unregister(3), iv_fd_registered(3), iv_fd_set_handler_in(3), iv_fd_set_handler_err(3), iv_fd_set_handler_out(3)
- deal with ivykis file descriptors