Method flush

serial_buffer/src/lib.rs:98–110

This function flushes the content of the buffer to the out device if it is allowed to, otherwise this is a no-op.

(&mut self)

    // This function flushes the content of the buffer to the out device if
    // it is allowed to, otherwise this is a no-op.
    fn flush(&mut self) -> Result<(), std::io::Error> {
        if !self.write_out.load(Ordering::Acquire) {
            return Ok(());
        }

        while let Some(byte) = self.buffer.pop_front() {
            if self.out.write_all(&[byte]).is_err() {
                self.buffer.push_front(byte);
                break;
            }
        }
        self.out.flush()
    }
}