(Linux) race condition in process files, threads and connections

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These 3 functions have the peculiarity that we read multiple files in /proc to 
extract the information we need.
While doing so we ignore ENOENT (no such file) errors because that means a 
certain file/thread/connection disappeared on us while iterating:

http://code.google.com/p/psutil/source/browse/tags/release-0.5.0/psutil/_pslinux
.py#601
http://code.google.com/p/psutil/source/browse/tags/release-0.5.0/psutil/_pslinux
.py#715
http://code.google.com/p/psutil/source/browse/tags/release-0.5.0/psutil/_pslinux
.py#778

That might also mean, though, that also the *process* disappeared on us, and 
that's not taken into accout.
The risk is that if we hit the race condition we get an empty list as a result, 
meaning the process has no threads/files/connections, while instead we should 
get a NoSuchProcess exception.

Original issue reported on code.google.com by g.rodola on 28 Jun 2012 at 3:23

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Fixed in r1393.

Original comment by g.rodola on 28 Jun 2012 at 3:27

• Changed state: FixedInSVN

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Original comment by g.rodola on 29 Jun 2012 at 4:48

• Added labels: Milestone-0.5.1
• Removed labels: Milestone-1.0.0

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Original comment by g.rodola on 29 Jun 2012 at 6:46

• Changed state: Fixed

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[deleted comment]

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Updated csets after the SVN -> Mercurial migration:
r1393 == revision ef6815f3634e

Original comment by g.rodola on 2 Mar 2013 at 12:09