From 4c85ec99f39bb6687f6fb0d23c6a7daedcde990e Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Fri, 5 Dec 2014 01:43:42 +0100
Subject: Issue #22922: Fix ProactorEventLoop.close()

Call _stop_accept_futures() before sestting the _closed attribute, otherwise
call_soon() raises an error.
---
 Lib/asyncio/proactor_events.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Lib/asyncio/proactor_events.py b/Lib/asyncio/proactor_events.py
index a1e2fef..4c527aa 100644
--- a/Lib/asyncio/proactor_events.py
+++ b/Lib/asyncio/proactor_events.py
@@ -387,11 +387,13 @@ class BaseProactorEventLoop(base_events.BaseEventLoop):
                                            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
-- 
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