[zeromq-dev] Poll on sockets OR child process

[Michel Pelletier]

It seems like this is something that could be appropriately added to zloop?
 A signal registration function that internally added a signalfd an called
a handler.

-Michel


On Thu, Dec 19, 2013 at 12:36 PM, Pieter Hintjens <ph at imatix.com> wrote:

> 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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