Velocity Reviews

Velocity Reviews (http://www.velocityreviews.com/forums/index.php)
-   Python (http://www.velocityreviews.com/forums/f43-python.html)
-   -   Re: properly catch SIGTERM (http://www.velocityreviews.com/forums/t948300-re-properly-catch-sigterm.html)

Kushal Kumaran 07-20-2012 08:52 AM

Re: properly catch SIGTERM
 
On Fri, Jul 20, 2012 at 11:39 AM, Dieter Maurer <dieter@handshake.de> wrote:
> Eric Frederich <eric.frederich@gmail.com> writes:
>> ...
>> This seems to work okay but just now I got this while hitting ctrl-c
>> It seems to have caught the signal at or in the middle of a call to
>> sys.stdout.flush()
>> --- Caught SIGTERM; Attempting to quit gracefully ---
>> Traceback (most recent call last):
>> File "/home/user/test.py", line 125, in <module>
>> sys.stdout.flush()
>> IOError: [Errno 4] Interrupted system call
>> How should I fix this?

>
> This is normal *nix behavior. Any signal, even if caught by a signal
> handler, can interrupt system calls.
>
> Modern *nix versions might allow to control whether a signal interrupts
> a system call or not. Check the signal documentation for your operating
> system for the control you have over signal handling. Likely,
> you cannot directly control the feature via Python, but the
> "ctypes" module allows you to call C functions directly.
>


The signal.siginterrupt function has been added in python 2.6 to do this.

--
regards,
kushal


All times are GMT. The time now is 01:54 AM.

Powered by vBulletin®. Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO ©2010, Crawlability, Inc.