[zeromq-dev] Poll on sockets OR child process

[Pieter Hintjens]

Hi Greg,

This is nice stuff. Process management is one of the incomplete areas.
If I was doing this in CZMQ, I'd have a class that managed child
processes and sent events (DIED, ENDED) back to the parent over a
pipe.

-Pieter


On Wed, Dec 18, 2013 at 3:33 PM, Greg Ward <greg at gerg.ca> wrote:
> On 27 November 2013, I said:
>> I'm hacking on a task distribution system used internally here. It has
>> N masters sending tasks (shell commands) out to M workers, and then
>> doing stuff with the results. There's something that annoys me
>> slightly about the implementation: the worker runs each task in a
>> separate thread.
>>
>> IMHO it would be ever so much nicer to just spawn the child process
>> that runs a task, and harvest the results when they are ready. IOW, I
>> want to integrate wait() and zmq_poll() in a single event loop.
>
> Thanks again to Michael Haberle for the tips. Since this was
> non-obvious to me, I assume it will be non-obvious to others in
> future. So I made several working examples and wrote up a blog post:
>
>   http://gerg.ca/blog/post/2013/zmq-child-process/
>
> Comments/criticisms are welcome.
>
>        Greg
> --
> Greg Ward                            http://www.gerg.ca
> <greg at gerg.ca>                       @gergdotca
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