Function g_child_watch_add_full

pub unsafe extern "C" fn g_child_watch_add_full(
    priority: i32,
    pid: i32,
    function: Option<unsafe extern "C" fn(i32, i32, *mut c_void)>,
    data: *mut c_void,
    notify: Option<unsafe extern "C" fn(*mut c_void)>,
) -> u32