Bugs item #857566, was opened at 2003-12-10 14:53 Message generated for change (Comment added) made by birkenfeld You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=857566&group_id=5470
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Library Group: Python 2.3 >Status: Closed >Resolution: Wont Fix Priority: 5 Submitted By: Gottfried Ganßauge (ganssauge) Assigned to: Nobody/Anonymous (nobody) Summary: tempfile.mktemp() omits pid from name Initial Comment: In python2.2 names created using tempfile.mktemp() contained the current pid as a prefix. This behaviour has changed and now processes running concurrently are prone to races. 1.) In my application which forks a few thousand sub processes over time sometimes tempfiles created by one subprocess are deleted by another. 2.) Also this probably leads to longer creation times when two processes want to create a temp file at the same time on multiprocessor machines because both processes are using the same rng with the same seed to generate names. Sorry, no code here, because 1. happens only a few times when running with huge amounts of data and because 2. is only a speculation. I would propose to reinstate the former behaviour. ---------------------------------------------------------------------- >Comment By: Reinhold Birkenfeld (birkenfeld) Date: 2005-06-25 22:21 Message: Logged In: YES user_id=1188172 Closing this as Won't Fix, as mktemp is really deprecated now and shouldn't be used. ---------------------------------------------------------------------- Comment By: Gottfried Ganßauge (ganssauge) Date: 2003-12-11 11:29 Message: Logged In: YES user_id=792746 It is already hard to keep a system working in a changing world, so I see no necessity to needlessly introduce incompatibilities. Your comments are apreciated nonetheless. ---------------------------------------------------------------------- Comment By: Thomas Heller (theller) Date: 2003-12-10 16:56 Message: Logged In: YES user_id=11105 Well, you could close the file (or even remove it, depending on your requirements), and pass the filename to the spawned program. Or, if you insist on using mktemp(), pass a prefix argument yourself? But I'm not really sure if this is what you need, so this is my last comment. ---------------------------------------------------------------------- Comment By: Gottfried Ganßauge (ganssauge) Date: 2003-12-10 15:17 Message: Logged In: YES user_id=792746 This is no option. In our system we need to spawn another program which doesn't accept file handles but wants to have a filename instead. ---------------------------------------------------------------------- Comment By: Thomas Heller (theller) Date: 2003-12-10 15:04 Message: Logged In: YES user_id=11105 mktemp() is deprecated in 2.3, to prevent exactly the problems you have. Read the docs, and use mkstemp() instead. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=857566&group_id=5470 _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
