[Python-bugs-list] [ python-Bugs-539444 ] asyncore file wrapper & os.error
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Fri, 05 Apr 2002 08:44:23 -0800
Bugs item #539444, was opened at 2002-04-04 20:57
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Category: Python Library
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Jeremy Hylton (jhylton)
Assigned to: A.M. Kuchling (akuchling)
Summary: asyncore file wrapper & os.error
Initial Comment:
The file wrapper makes a file descriptor look like an
asycnore socket. When its recv() method is invoked, it
calls os.read().
I use this in an application where os.read()
occasionally raises os.error (11, 'Resource temporarily
unavailable'). I think that asyncore should catch this
error and treat it just like EWOULDBLOCK.
But I'd like a second opinion.
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>Comment By: Jeremy Hylton (jhylton)
Date: 2002-04-05 16:44
Message:
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It happens when the file is a pipe.
For details, see the ZEO bug report at
https://sourceforge.net/tracker/index.php?
func=detail&aid=536416&group_id=15628&atid=115628
I've included the traceback from that bug report, too.
error: uncaptured python exception, closing channel
<select-trigger (pipe) at 81059cc>
(exceptions.OSError:[Errno 11] Resource temporarily
unavailable
[/home/zope/opt/Python-
2.1.2/lib/python2.1/asyncore.py|poll|92]
[/home/zope/opt/Python-
2.1.2/lib/python2.1/asyncore.py|handle_read_event|386]
[/home/zope/opt/Python-2.1.2/lib/python2.1/site-
packages/ZEO/trigger.py|handle_read|95]
[/home/zope/opt/Python-
2.1.2/lib/python2.1/asyncore.py|recv|338]
[/home/zope/opt/Python-
2.1.2/lib/python2.1/asyncore.py|recv|520])
Exception exceptions.OSError: (9, 'Bad file
descriptor') in <method trigger.__del__ of trigger
instance at 0x81059cc> ignored
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Comment By: Martin v. Löwis (loewis)
Date: 2002-04-05 09:00
Message:
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user_id=21627
Can you report details of the file that returns EWOULDBLOCK?
This is not supposed to happen in applications of the
file_wrapper.
----------------------------------------------------------------------
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