Code import

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

@@ -0,0 +1,60 @@
+import errno
+import sys
+from eventlet import patcher
+from eventlet.support import get_errno, clear_sys_exc_info
+select = patcher.original('select')
+time = patcher.original('time')
+
+from eventlet.hubs.hub import BaseHub, READ, WRITE, noop
+
+try:
+    BAD_SOCK = set((errno.EBADF, errno.WSAENOTSOCK))
+except AttributeError:
+    BAD_SOCK = set((errno.EBADF,))
+
+
+class Hub(BaseHub):
+    def _remove_bad_fds(self):
+        """ Iterate through fds, removing the ones that are bad per the
+        operating system.
+        """
+        all_fds = list(self.listeners[READ]) + list(self.listeners[WRITE])
+        for fd in all_fds:
+            try:
+                select.select([fd], [], [], 0)
+            except select.error as e:
+                if get_errno(e) in BAD_SOCK:
+                    self.remove_descriptor(fd)
+
+    def wait(self, seconds=None):
+        readers = self.listeners[READ]
+        writers = self.listeners[WRITE]
+        if not readers and not writers:
+            if seconds:
+                time.sleep(seconds)
+            return
+        all_fds = list(readers) + list(writers)
+        try:
+            r, w, er = select.select(readers.keys(), writers.keys(), all_fds, seconds)
+        except select.error as e:
+            if get_errno(e) == errno.EINTR:
+                return
+            elif get_errno(e) in BAD_SOCK:
+                self._remove_bad_fds()
+                return
+            else:
+                raise
+
+        for fileno in er:
+            readers.get(fileno, noop).cb(fileno)
+            writers.get(fileno, noop).cb(fileno)
+
+        for listeners, events in ((readers, r), (writers, w)):
+            for fileno in events:
+                try:
+                    listeners.get(fileno, noop).cb(fileno)
+                except self.SYSTEM_EXCEPTIONS:
+                    raise
+                except:
+                    self.squelch_exception(fileno, sys.exc_info())
+                    clear_sys_exc_info()