Function alsa_sys::snd_rawmidi_poll_descriptors_revents

pub unsafe extern "C" fn snd_rawmidi_poll_descriptors_revents(
    rawmidi: *mut snd_rawmidi_t, 
    pfds: *mut pollfd, 
    nfds: c_uint, 
    revent: *mut c_ushort
) -> c_int