53     stdin_rx: mpsc::Receiver<u8>,
54     stdin_tx: mpsc::Sender<u8>,
56     output_rx: mpsc::Receiver<u8>,
57     output_tx: mpsc::Sender<u8>,
84         let (stdin_tx, stdin_rx) = mpsc::channel::<u8>(Self::STDIN_BUF_SIZE);  in new()
85         let (output_tx, output_rx) = mpsc::channel::<u8>(Self::OUTPUT_BUF_SIZE);  in new()
105     pub fn input(&self, buf: &[u8], block: bool) -> Result<usize, TtyError> {  in input()  argument
122     pub fn output(&self, buf: &mut [u8], block: bool) -> Result<usize, TtyError> {  in output()  argument
133     pub fn stdout(&self, buf: &[u8], block: bool) -> Result<usize, TtyError> {  in stdout()  argument
144     pub fn stderr(&self, buf: &[u8], block: bool) -> Result<usize, TtyError> {  in stderr()  argument
155     pub fn read_stdin(&self, buf: &mut [u8], block: bool) -> Result<usize, TtyError> {  in read_stdin()  argument
159             let val: Result<mpsc::RecvRef<u8>, TryRecvError> = self.stdin_rx.try_recv_ref();  in read_stdin()
185     fn stdin_should_return(&self, c: u8) -> bool {  in stdin_should_return()
199     fn write_stdin(&self, buf: &[u8], block: bool) -> Result<usize, TtyError> {  in write_stdin()  argument
202             let r: Result<mpsc::SendRef<u8>, TrySendError> = self.stdin_tx.try_send_ref();  in write_stdin()
231     fn read_output(&self, buf: &mut [u8], block: bool) -> Result<usize, TtyError> {  in read_output()  argument
234             let val: Result<mpsc::RecvRef<u8>, TryRecvError> = self.output_rx.try_recv_ref();  in read_output()
264     fn write_output(&self, buf: &[u8], block: bool) -> Result<usize, TtyError> {  in write_output()  argument
267             let r: Result<mpsc::SendRef<u8>, TrySendError> = self.output_tx.try_send_ref();  in write_output()