Comment 5 for bug 613675
Revision history for this message
| Jakub Wilk (jwilk) wrote Re: [Bug 613675] Re: pycompile hangs when there is more than one python installed | #5 |
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0e1f616
(Get the code!)
(For the reference, since paste.debian.net links will expire in a few
days:)
A minimal example to trigger the buggy behaviour is:
from subprocess import *
p1 = Popen('cat', stdin=PIPE)
p2 = Popen('cat', stdin=PIPE)
print 'p1.communicate()'
p1.communicate()
print 'p2.communicate()'
p2.communicate()
A simple ls in /proc shows that p2 inherits fd of the other side of p1's
stdin:
$ ls -l /proc/965[45]/fd/
/proc/9654/fd/:
total 0
lr-x------ 1 jwilk users 64 Aug 5 23:54 0 -> pipe:[213041]
lrwx------ 1 jwilk users 64 Aug 5 23:54 1 -> /dev/pts/3
lrwx------ 1 jwilk users 64 Aug 5 23:54 2 -> /dev/pts/3
/proc/9655/fd/:
total 0
lr-x------ 1 jwilk users 64 Aug 5 23:54 0 -> pipe:[213043]
lrwx------ 1 jwilk users 64 Aug 5 23:54 1 -> /dev/pts/3
lrwx------ 1 jwilk users 64 Aug 5 23:54 2 -> /dev/pts/3
l-wx------ 1 jwilk users 64 Aug 5 23:54 4 -> pipe:[213041]
--
Jakub Wilk