Code import

venv/lib/python2.7/site-packages/eventlet/hubs/epolls.py

@@ -0,0 +1,61 @@
+import errno
+from eventlet.support import get_errno
+from eventlet import patcher
+select = patcher.original("select")
+if hasattr(select, 'epoll'):
+    epoll = select.epoll
+else:
+    try:
+        # http://pypi.python.org/pypi/select26/
+        from select26 import epoll
+    except ImportError:
+        try:
+            import epoll as _epoll_mod
+        except ImportError:
+            raise ImportError(
+                "No epoll implementation found in select module or PYTHONPATH")
+        else:
+            if hasattr(_epoll_mod, 'poll'):
+                epoll = _epoll_mod.poll
+            else:
+                raise ImportError(
+                    "You have an old, buggy epoll module in PYTHONPATH."
+                    " Install http://pypi.python.org/pypi/python-epoll/"
+                    " NOT http://pypi.python.org/pypi/pyepoll/. "
+                    " easy_install pyepoll installs the wrong version.")
+
+from eventlet.hubs.hub import BaseHub
+from eventlet.hubs import poll
+from eventlet.hubs.poll import READ, WRITE
+
+# NOTE: we rely on the fact that the epoll flag constants
+# are identical in value to the poll constants
+
+
+class Hub(poll.Hub):
+    def __init__(self, clock=None):
+        BaseHub.__init__(self, clock)
+        self.poll = epoll()
+        try:
+            # modify is required by select.epoll
+            self.modify = self.poll.modify
+        except AttributeError:
+            self.modify = self.poll.register
+
+    def add(self, evtype, fileno, cb, tb, mac):
+        oldlisteners = bool(self.listeners[READ].get(fileno) or
+                            self.listeners[WRITE].get(fileno))
+        listener = BaseHub.add(self, evtype, fileno, cb, tb, mac)
+        try:
+            if not oldlisteners:
+                # Means we've added a new listener
+                self.register(fileno, new=True)
+            else:
+                self.register(fileno, new=False)
+        except IOError as ex:    # ignore EEXIST, #80
+            if get_errno(ex) != errno.EEXIST:
+                raise
+        return listener
+
+    def do_poll(self, seconds):
+        return self.poll.poll(seconds)