asynchronous timer events - how to?

Helmut Jarausch jarausch at
Wed Jan 9 19:31:08 CET 2008

Fredrik Lundh wrote:
> Helmut Jarausch wrote:
>> I'm using a web server (Karrigell) which is based on the asyncore module.
>> I'd like to be able to checkpoint some data (e.g. pickled 
>> dictionaries) to disk
>> from time to time.
>> For that I would need to setup a timer which calls a Python 
>> object/function when its time interval has expired. While this 
>> function is running I need access to the variables of the server.
> the usual way to do that with asyncore is to add an outer control loop 
> that calls asyncore.loop with a count argument (or poll directly), and 
> checks a "task queue" at regular intervals.
> but in your case, it's probably easier to set up a cron job that does
> a "wget" against your server with a "secret" URL, and have the server do 
> the checkpointing whenever that URL is fetched.

Thanks for this ingenious idea,

Helmut Jarausch

Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany

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