Approaches of interprocess communication

[Nikita the Spider]

In article <1171620696.577982.283740 at m58g2000cwm.googlegroups.com>,
 "exhuma.twn" <exhuma at gmail.com> wrote:

> Hi all,
> 
> Supposing you have two separate processes running on the same box,
> what approach would you suggest to communicate between those two
> processes.

Hi exhuma,
That would depend on what data I was exchanging between the processes. 
For instance, if process A spawns work process B and wants to be able 
monitor B's progress, a message-based protocol might be kind of chatty. 
In this situation shared memory is probably a better fit because B can 
write it's progress to a chunk of shared memory and A can read that at 
its leisure. OTOH if the conversation is more event-driven, then a 
messaging protocol makes good sense.

FYI there's a Python module (with sample code) for using shared memory 
on most *nix systems here:
http://NikitaTheSpider.com/python/shm/

HTH

-- 
Philip
http://NikitaTheSpider.com/
Whole-site HTML validation, link checking and more