Update Tornado lib

libs/tornado/platform/epoll.py

@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+#
+# Copyright 2012 Facebook
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+"""EPoll-based IOLoop implementation for Linux systems.
+
+Supports the standard library's `select.epoll` function for Python 2.6+,
+and our own C module for Python 2.5.
+"""
+from __future__ import absolute_import, division, with_statement
+
+import os
+import select
+
+from tornado.ioloop import PollIOLoop
+
+if hasattr(select, 'epoll'):
+    # Python 2.6+
+    class EPollIOLoop(PollIOLoop):
+        def initialize(self, **kwargs):
+            super(EPollIOLoop, self).initialize(impl=select.epoll(), **kwargs)
+else:
+    # Python 2.5
+    from tornado import epoll
+    
+    class _EPoll(object):
+        """An epoll-based event loop using our C module for Python 2.5 systems"""
+        _EPOLL_CTL_ADD = 1
+        _EPOLL_CTL_DEL = 2
+        _EPOLL_CTL_MOD = 3
+
+        def __init__(self):
+            self._epoll_fd = epoll.epoll_create()
+
+        def fileno(self):
+            return self._epoll_fd
+
+        def close(self):
+            os.close(self._epoll_fd)
+
+        def register(self, fd, events):
+            epoll.epoll_ctl(self._epoll_fd, self._EPOLL_CTL_ADD, fd, events)
+
+        def modify(self, fd, events):
+            epoll.epoll_ctl(self._epoll_fd, self._EPOLL_CTL_MOD, fd, events)
+
+        def unregister(self, fd):
+            epoll.epoll_ctl(self._epoll_fd, self._EPOLL_CTL_DEL, fd, 0)
+
+        def poll(self, timeout):
+            return epoll.epoll_wait(self._epoll_fd, int(timeout * 1000))
+
+
+    class EPollIOLoop(PollIOLoop):
+        def initialize(self, **kwargs):
+            super(EPollIOLoop, self).initialize(impl=_EPoll(), **kwargs)
+