Function select
pub unsafe extern "C" fn select(nfds: c_int, readfds: *mut fd_set, writefds: *mut fd_set, errorfds: *mut fd_set, timeout: *mut timeval) -> c_intselectpub unsafe extern "C" fn select(nfds: c_int, readfds: *mut fd_set, writefds: *mut fd_set, errorfds: *mut fd_set, timeout: *mut timeval) -> c_int