Issue 32076: Expose LockFile on Windows

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This issue has been migrated to GitHub: https://github.com/python/cpython/issues/76257

classification

Title:	Expose LockFile on Windows
Type:	enhancement	Stage:
Components:	Library (Lib), Windows	Versions:	Python 3.7

process

Status:	open	Resolution:
Dependencies:		Superseder:
Assigned To:		Nosy List:	paul.moore, pitrou, steve.dower, tim.golden, zach.ware
Priority:	normal	Keywords:

Created on 2017-11-19 20:21 by pitrou, last changed 2022-04-11 14:58 by admin.

Messages (1)
msg306514 - (view)	Author: Antoine Pitrou (pitrou) *	Date: 2017-11-19 20:21
msvcrt.locking() is sometimes practically useless since its so-called "non-blocking" mode will still block for 1 second. Instead, the Windows API LockFile() function (and its companion UnlockFile()) allows real non-blocking locking. Right now you have to call LockFile() using ctypes (see https://github.com/mwilliamson/locket.py/pull/8/files for an example). It would be nice to expose it somewhere, for example in msvcrt or another module.

msg306514 - (view)

Author: Antoine Pitrou (pitrou) * (Python committer)

Date: 2017-11-19 20:21

msvcrt.locking() is sometimes practically useless since its so-called "non-blocking" mode will still block for 1 second.  Instead, the Windows API LockFile() function (and its companion UnlockFile()) allows real non-blocking locking.

Right now you have to call LockFile() using ctypes (see https://github.com/mwilliamson/locket.py/pull/8/files for an example).  It would be nice to expose it somewhere, for example in msvcrt or another module.

History
Date	User	Action	Args
2022-04-11 14:58:54	admin	set	github: 76257
2017-11-19 20:21:43	pitrou	create