spool.py 文件源码

def register(self, fd):
        '''
        Register a file decriptor with the spool.
        '''
        if not self.fds:
            self.fds = select.poll()
        mask = (
            select.POLLERR | select.POLLHUP | select.POLLNVAL | select.POLLIN |
            select.POLLPRI
        )
        self.fds.register(fd, mask)