New submission from Jeff Robbins <je...@livedata.com>:
By default, the __init__ function of IocpProactor in windows_events.py calls CreateIoCompletionPort with a 4th argument of 0xffffffff, yet MSDN doesn't document this as a valid argument. https://docs.microsoft.com/en-us/windows/desktop/fileio/createiocompletionport It looks like the 4th arg (NumberOfConcurrentThreads) is meant to be either a positive integer or 0. 0 is a special value meaning "If this parameter is zero, the system allows as many concurrently running threads as there are processors in the system." Why does asyncio use 0xffffffff instead as the default value? ---------- components: asyncio messages: 332498 nosy: asvetlov, je...@livedata.com, yselivanov priority: normal severity: normal status: open title: Windows IocpProactor: CreateIoCompletionPort 4th arg 0xffffffff -- why is this value the default? versions: Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue35580> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
