twisted.py 文件源码

def removeReader(self, reader):
        """
        Remove a Selectable for notification of data available to read.
        """
        fd = reader.fileno()
        if reader in self._readers:
            del self._readers[reader]
            if self._closed: return
            (_, writer) = self._fds[fd]
            if writer:
                # We have a writer so we need to update the IOLoop for
                # write events only.
                self._fds[fd] = (None, writer)
                self._io_loop.update_handler(fd, IOLoop.WRITE)
            else:
                # Since we have no writer registered, we remove the
                # entry from _fds and unregister the handler from the
                # IOLoop
                del self._fds[fd]
                self._io_loop.remove_handler(fd)