diff options
Diffstat (limited to 'Lib/asyncio/windows_events.py')
| -rw-r--r-- | Lib/asyncio/windows_events.py | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Lib/asyncio/windows_events.py b/Lib/asyncio/windows_events.py index a6759b78bd8..5e7cd795895 100644 --- a/Lib/asyncio/windows_events.py +++ b/Lib/asyncio/windows_events.py @@ -318,8 +318,12 @@ class ProactorEventLoop(proactor_events.BaseProactorEventLoop): if self._self_reading_future is not None: ov = self._self_reading_future._ov self._self_reading_future.cancel() - # self_reading_future was just cancelled so it will never be signalled - # Unregister it otherwise IocpProactor.close will wait for it forever + # self_reading_future was just cancelled so if it hasn't been + # finished yet, it never will be (it's possible that it has + # already finished and its callback is waiting in the queue, + # where it could still happen if the event loop is restarted). + # Unregister it otherwise IocpProactor.close will wait for it + # forever if ov is not None: self._proactor._unregister(ov) self._self_reading_future = None |