>>>>> Carl Banks <pavlovevide...@gmail.com> (CB) wrote:
>CB> On Jul 28, 3:15 pm, John D Giotta <jdgio...@gmail.com> wrote: >>> I'm looking to run a process with a limit of 3 instances, but each >>> execution is over a crontab interval. I've been investigating the >>> threading module and using daemons to limit active thread objects, but >>> I'm not very successful at grasping the documentation. >>> >>> Is it possible to do what I'm trying to do and if so anyone know of a >>> useful example to get started? >CB> It seems like you want to limit the number of processes to three; the >CB> threading module won't help you there because it deals with threads >CB> within a single process. >CB> What I'd do is to simply run the system ps to see how many processes >CB> are running (ps is pretty versatile on most systems and can find >CB> specifically targeted processes like you program), and exit if there >CB> are already three. That will surely run into some race conditions. If the limit of 3 processes is soft then that wouldn't be a big deal, however. -- Piet van Oostrum <p...@cs.uu.nl> URL: http://pietvanoostrum.com [PGP 8DAE142BE17999C4] Private email: p...@vanoostrum.org -- http://mail.python.org/mailman/listinfo/python-list
