Function gio_sys::g_data_input_stream_read_upto_async

pub unsafe extern fn g_data_input_stream_read_upto_async(stream: *mut GDataInputStream,
                                                         stop_chars: *const c_char,
                                                         stop_chars_len: ssize_t,
                                                         io_priority: c_int,
                                                         cancellable: *mut GCancellable,
                                                         callback: GAsyncReadyCallback,
                                                         user_data: gpointer)