Issue #22922: Fix ProactorEventLoop.close()
Close the IocpProactor before closing the event loop. IocpProactor.close() can
call loop.call_soon(), which is forbidden when the event loop is closed.
diff --git a/Lib/asyncio/proactor_events.py b/Lib/asyncio/proactor_events.py
index 0a4d068..5986e37 100644
--- a/Lib/asyncio/proactor_events.py
+++ b/Lib/asyncio/proactor_events.py
@@ -387,13 +387,19 @@
raise RuntimeError("Cannot close a running event loop")
if self.is_closed():
return
+
+ # Call these methods before closing the event loop (before calling
+ # BaseEventLoop.close), because they can schedule callbacks with
+ # call_soon(), which is forbidden when the event loop is closed.
self._stop_accept_futures()
self._close_self_pipe()
- super().close()
self._proactor.close()
self._proactor = None
self._selector = None
+ # Close the event loop
+ super().close()
+
def sock_recv(self, sock, n):
return self._proactor.recv(sock, n)