[ python-Bugs-857566 ] tempfile.mktemp() omits pid from name

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Bugs item #857566, was opened at 2003-12-10 13:53
Message generated for change (Comment added) made by ganssauge
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Category: Python Library
Group: Python 2.3
Status: Open
Resolution: None
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.

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>Comment By: Gottfried Ganßauge (ganssauge)
Date: 2003-12-10 14:17

Message:
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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.

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Comment By: Thomas Heller (theller)
Date: 2003-12-10 14:04

Message:
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mktemp() is deprecated in 2.3, to prevent exactly the
problems you have.  Read the docs, and use mkstemp() instead.

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