radar/network/monitor/epoll_monitor.py
# -*- coding: utf-8 -*-
"""
This file is part of Radar.
Radar is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Radar is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Lesser GNU General Public License for more details.
You should have received a copy of the Lesser GNU General Public License
along with Radar. If not, see <http://www.gnu.org/licenses/>.
Copyright 2015 Lucas Liendo.
"""
from . import NetworkMonitor, NetworkMonitorError
class EPollMonitor(NetworkMonitor):
def __new__(cls, *args, **kwargs):
try:
global epoll, EPOLLIN
from select import epoll, EPOLLIN
except ImportError:
raise NetworkMonitorError(cls.__name__)
return super(EPollMonitor, cls).__new__(cls, *args, **kwargs)
def __init__(self, *args, **kwargs):
super(EPollMonitor, self).__init__(*args, **kwargs)
self._epoll_monitor = epoll()
self._register(self._server.socket)
def _register(self, fd):
self._epoll_monitor.register(fd, EPOLLIN)
def on_disconnect(self, client):
self._epoll_monitor.unregister(client.socket)
def on_connect(self, client):
self._register(client.socket)
def watch(self):
ready_fds = [fd for (fd, _) in self._epoll_monitor.poll(self._timeout)]
super(EPollMonitor, self)._watch(ready_fds)