Issue #22922: Fix ProactorEventLoop.close()

vstinner · vstinner · commit 4c85ec99f39b · 2014-12-05T01:43:42.000+01:00
Call _stop_accept_futures() before sestting the _closed attribute, otherwise
call_soon() raises an error.
diff --git a/Lib/asyncio/proactor_events.py b/Lib/asyncio/proactor_events.py
@@ -387,11 +387,13 @@ def _make_write_pipe_transport(self, sock, protocol, waiter=None,
                                            sock, protocol, waiter, extra)
 
     def close(self):
+        if self._running:
+            raise RuntimeError("Cannot close a running event loop")
         if self.is_closed():
             return
-        super().close()
         self._stop_accept_futures()
         self._close_self_pipe()
+        super().close()
         self._proactor.close()
         self._proactor = None
         self._selector = None
