Re: Daemon loses file reference after a while.

Path	csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!ecngs!feeder2.ecngs.de!newsfeed.freenet.ag!news2.euro.net!newsfeed.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path	<airween@gmail.com>
X-Original-To	python-list@python.org
Delivered-To	python-list@mail.python.org
X-Spam-Status	OK 0.002
X-Spam-Evidence	'H': 1.00; 'S': 0.00; 'exception': 0.03; 'executed': 0.07; 'skip:/ 10': 0.07; 'stops': 0.07; 'utf-8': 0.07; 'python': 0.09; 'exception:': 0.09; 'nameerror:': 0.09; 'cc:addr :python-list': 0.10; '--version': 0.16; '24,': 0.16; 'code?': 0.16; 'descriptors,': 0.16; 'process?': 0.16; 'skip:o 70': 0.16; 'wrote:': 0.17; 'working.': 0.17; 'creates': 0.18; 'suddenly': 0.22; 'defined': 0.22; 'runs': 0.22; 'installation': 0.23; 'cc:20': 0.23; 'cc:no real name:20': 0.24; 'linux': 0.24; 'script': 0.24; 'cc:addr:python.org': 0.25; 'header:In-Reply- To:1': 0.25; 'header:User-Agent:1': 0.26; '(most': 0.27; 'skip:( 20': 0.28; 'run': 0.28; '-0700,': 0.29; 'cat': 0.29; 'code': 0.31; 'point': 0.31; 'file': 0.32; 'running': 0.32; 'could': 0.32; 'getting': 0.33; 'traceback': 0.33; 'loss': 0.34; 'server': 0.35; 'similar': 0.35; 'but': 0.36; 'stock': 0.36; 'problems': 0.36; 'ones': 0.37; 'subject:: ': 0.38; 'some': 0.38; 'release': 0.39; 'hello,': 0.39; 'skip:" 10': 0.40; 'header:Received:5': 0.40; 'your': 0.60; 'red': 0.60; 'content-disposition:inline': 0.60; 'email addr:gmail.com': 0.63; 'jul': 0.65; 'drops': 0.91; 'received:86': 0.93; 'received:hu': 0.93; 'online,': 0.98
X-Spam-Score	-2.085
X-Spam-Level
X-Spam-Status	No, score=-2.085 tagged_above=-20 required=4 tests=[AWL=0.414, BAYES_00=-2.599, RDNS_NONE=0.1]
Date	Tue, 24 Jul 2012 14:24:31 +0200
From	Ervin Hegedüs <airween@gmail.com>
To	"ivdneut@gmail.com" <ivdneut@gmail.com>
Subject	Re: Daemon loses __file__ reference after a while.
References	<bfa7b7ac-d288-4889-8e48-dd0ff0cad711@googlegroups.com>
MIME-Version	1.0
Content-Type	text/plain; charset=utf-8
Content-Disposition	inline
Content-Transfer-Encoding	8bit
In-Reply-To	<bfa7b7ac-d288-4889-8e48-dd0ff0cad711@googlegroups.com>
User-Agent	Mutt/1.5.20 (2009-06-14)
Cc	python-list@python.org
X-BeenThere	python-list@python.org
X-Mailman-Version	2.1.12
Precedence	list
List-Id	General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe	<http://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive	<http://mail.python.org/pipermail/python-list>
List-Post	<mailto:python-list@python.org>
List-Help	<mailto:python-list-request@python.org?subject=help>
List-Subscribe	<http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups	comp.lang.python
Message-ID	<mailman.2531.1343132808.4697.python-list@python.org> (permalink)
Lines	36
NNTP-Posting-Host	2001:888:2000:d::a6
X-Trace	1343132808 news.xs4all.nl 6948 [2001:888:2000:d::a6]:52642
X-Complaints-To	abuse@xs4all.nl
Xref	csiph.com comp.lang.python:25982

Show key headers only | View raw

hello,

On Tue, Jul 24, 2012 at 04:48:42AM -0700, ivdneut@gmail.com wrote:
> Hello,
> 
> I have a daemon process that runs for a considerable amount of time (weeks on end) without any problems. At some point I start getting the exception:
> 
> Exception info: Traceback (most recent call last):
>   File "scheduler.py", line 376, in applyrule
>     result = execrule(rule_code)
>   File "scheduler.py", line 521, in execrule
>     rulepath = os.path.dirname(__file__)+"/"+'/'.join(rule['modules'])+"/"+rule['rulename']
> NameError: name '__file__' is not defined
> 
> This section of the code is executed in this process *all the time*, but suddenly stops working. I have been searching for similar issues online, but only come accross people having problems because they run the script interactively. This is not the case here.

could you send the relevant part of the code?

I mean: how do you daemonize your process?
 
> I am running python from a virtual-env installation from a stock Red Hat EL 6.2 installation:
> 
> (virtual-env)[user@host ~]$ python --version
> Python 2.6.6
> (virtual-env)[user@host ~]$ cat /etc/redhat-release 
> Red Hat Enterprise Linux Server release 6.2 (Santiago)

If you use fork(), it drops all file descriptors, and creates new
ones - may be then loss the __file__...?


a.


-- 
I � UTF-8

Thread

Daemon loses __file__ reference after a while. "ivdneut@gmail.com" <ivdneut@gmail.com> - 2012-07-24 04:48 -0700
  Re: Daemon loses __file__ reference after a while. Ervin Hegedüs <airween@gmail.com> - 2012-07-24 14:24 +0200
    Re: Daemon loses __file__ reference after a while. "ivdneut@gmail.com" <ivdneut@gmail.com> - 2012-07-24 05:41 -0700
    Re: Daemon loses __file__ reference after a while. "ivdneut@gmail.com" <ivdneut@gmail.com> - 2012-07-24 05:41 -0700
  Re: Daemon loses __file__ reference after a while. Laszlo Nagy <gandalf@shopzeus.com> - 2012-07-24 14:31 +0200
  Re: Daemon loses __file__ reference after a while. Dieter Maurer <dieter@handshake.de> - 2012-07-24 16:59 +0200
    Re: Daemon loses __file__ reference after a while. Paul Rubin <no.email@nospam.invalid> - 2012-07-24 12:32 -0700
      Re: Daemon loses __file__ reference after a while. Ian Kelly <ian.g.kelly@gmail.com> - 2012-07-24 14:08 -0600
  Re: Daemon loses __file__ reference after a while. Ian Kelly <ian.g.kelly@gmail.com> - 2012-07-24 14:02 -0600

csiph-web