Function g_unix_fd_add_full

pub unsafe extern "C" fn g_unix_fd_add_full(
    priority: i32,
    fd: i32,
    condition: u32,
    function: Option<unsafe extern "C" fn(i32, u32, *mut c_void) -> i32>,
    user_data: *mut c_void,
    notify: Option<unsafe extern "C" fn(*mut c_void)>,
) -> u32