Hi,
I hit an issue with the following python code:
try:
get_orient = subprocess.Popen (['jpegexiforient', '-n', pathfull],
stdin = subprocess.PIPE,
stdout = subprocess.PIPE)
orient = get_orient.communicate ()[0]
except:
orient = None
The intent of this was to read the exif orientation of a picture, or just
use None if jpegexiforient can not run.
The application worked fine on my devel machine but I noticed that on a
different host, it crashed due to running out of file descriptors.
After investigation I found out that the above code was responsible,
leaking two file descriptors per invocation if jpegexiforient is not
installed on the host.
I don't see any way to fix it in my code either, since get_orient is not
defined in the exception path, there is no way I can close its file
descriptors myself. I believe this is a bug in the subprocess module,
it should make sure to clean up after itself when getting out on the
exception path.
This looks like a duplicate of http://bugs.python.org/issue3210.
Can you confirm if this seems likely (and, if so, perhaps add
a note to the bug indicating that the problem is on Linux as well)?
TJG
