pub async fn read(&mut self, data: &mut [u8]) -> Result<usize, Error> {
        if self.task.is_terminated() {
            return Err(Error::Shutdown);
        }

        let shared = &self.shared;
        let mut shared_lock_future = shared.lock();
        let mut read_done =
            future::poll_fn(|cx| match Pin::new(&mut shared_lock_future).poll(cx) {
                Poll::Ready(mut shared_guard) => {
                    let len = shared_guard.recv_window.read(data);
                    if len > 0 {
                        Poll::Ready(len)
                    } else {
                        shared_guard.read_ready = Some(cx.waker().clone());
                        shared_lock_future = shared.lock();
                        Poll::Pending
                    }
                }
                Poll::Pending => Poll::Pending,
            })
            .fuse();

        select! {
            len = read_done => Ok(len),
            error = &mut self.task => Err(error),
        }
    }
/// Read any available data.  Returns once at least one byte of data has been read.
Read any available data.  Returns once at least one byte of data has been read.
Read any available data . Returns once at least one byte of data has been read .
pub async fn read(&mut self, data: &mut [u8]) -> Result<usize, Error> {
        if self.task.is_terminated() {
            return Err(Error::Shutdown);
        }
        let shared = &self.shared;
        let mut shared_lock_future = shared.lock();
        let mut read_done =
            future::poll_fn(|cx| match Pin::new(&mut shared_lock_future).poll(cx) {
                Poll::Ready(mut shared_guard) => {
                    let len = shared_guard.recv_window.read(data);
                    if len > 0 {
                        Poll::Ready(len)
                    } else {
                        shared_guard.read_ready = Some(cx.waker().clone());
                        shared_lock_future = shared.lock();
                        Poll::Pending
                    }
                }
                Poll::Pending => Poll::Pending,
            })
            .fuse();
        select! {
            len = read_done => Ok(len),
            error = &mut self.task => Err(error),
        }
    }
pub async fn read ( & mut self , data : & mut [ u8 ] ) -> Result < usize , Error > { if self . task . is_terminated ( ) { return Err ( Error :: Shutdown ) ; } let shared = & self . shared ; let mut shared_lock_future = shared . lock ( ) ; let mut read_done = future :: poll_fn ( | cx | match Pin :: new ( & mut shared_lock_future ) . poll ( cx ) { Poll :: Ready ( mut shared_guard ) => { let len = shared_guard . recv_window . read ( data ) ; if len > 0 { Poll :: Ready ( len ) } else { shared_guard . read_ready = Some ( cx . waker ( ) . clone ( ) ) ; shared_lock_future = shared . lock ( ) ; Poll :: Pending } } Poll :: Pending => Poll :: Pending , } ) . fuse ( ) ; select ! { len read_done Ok ( len ) error mut self task Err ( error ) } }
Read any available data.
Read any available data .
&mut self
data
&mut [u8]
&mut self
data
&mut [u8]