Thouis (Ray) Jones tho...@gmail.com added the comment:
Further testing indicates the problem is in the filesystem itself (either the
server or client, but not in python).
Serializing the loops calling readdir / readdir_r fixes the problem on my
system, but using either function in a large
New submission from Thouis (Ray) Jones tho...@gmail.com:
On my system (OSX 10.6.8) using the python.org 32/64-bit build of 2.7.2, I see
incorrect results from os.listdir() in a threaded program. The error is that
the result of os.listdir() is missing a few files from its list.
First, my use
Thouis (Ray) Jones tho...@gmail.com added the comment:
Here is the script I use to detect the failure.
% python filefinder.py /PATH/TO/LARGE/DIRECTORY/TREE
(note that I was working over samba with an 8ish-level deep directory with
around 25 files).
Compare its final output in the FOUND
Thouis (Ray) Jones tho...@gmail.com added the comment:
I should add the caveat that I am not completely confident that I have
stress-tested the patch enough to be sure that it actually addresses the
problem. It is still possible that this is an error in OSX or the remote
fileserver in which
Changes by Thouis (Ray) Jones tho...@gmail.com:
Added file: http://bugs.python.org/file23834/py272_readdir_r.v2.patch
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http://bugs.python.org/issue13517
Thouis (Ray) Jones tho...@gmail.com added the comment:
Reading through many pages discussing readdir vs. readdir_r (many on security
mailing lists, a large number referring to the page linked in the patch), I get
the impression that most implementations are thread-safe as long as separate
Thouis (Ray) Jones tho...@gmail.com added the comment:
It's also possible that readdir() is not reentrant with lstat()
This doesn't make much sense to me.
Me either. I think what I was actually seeing was multiple calls to readdir()
still occurring even after placing a mutex on os.listdir
Changes by Thouis (Ray) Jones tho...@gmail.com:
--
nosy: +thouis
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http://bugs.python.org/issue7946
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