ioloop.py 文件源码

def unregister(self, sock, events=EV_READ | EV_WRITE):
        super(Epoll, self).unregister(sock, events)
        if events == EV_READ | EV_WRITE:
            self.epoll.unregister(sock)
            ck = self.fd2socks.pop(sock.fileno(), None)
            if ck:
                return True
            else:
                return False
        else:
            ev = select.EPOLLERR | select.EPOLLHUP | \
                select.EPOLLIN | select.EPOLLOUT
            if events & EV_READ:
                ev ^= select.EPOLLIN
            if events & EV_WRITE:
                ev ^= select.EPOLLOUT
            self.epoll.modify(sock.fileno(), ev)
            return True