I like the example, and I should be able to adapt it. I do have one
question about the example (probably not related to agents:
; queue up some work to be done
(defn add-job [func]
(let [a (agent nil)]
(send a (fn [_] (func)))
(swap! jobs #(conj %1 a))))
What is the notation fn [_]? I can't seem to find any documentation
for what _ as a function argument means...
On Jan 22, 6:14 am, Greg Harman <ghar...@gmail.com> wrote:
> Thanks Tim, I'll have a look at that.
>
> To clarify my use case, I was thinking of events that can be processed
> sequentially but that may take a non-trivial amount of time to
> complete (both CPU and IO bound at different stages of processing) so
> it's ideal to have a thread pool to process different tasks in
> parallel, even though they are independent. (That's step one. Step two
> will be spreading that "thread pool" out over multiple JVMs running on
> different hardware).
>
> On Jan 22, 2:39 am, Timothy Pratley <timothyprat...@gmail.com> wrote:
>
> > Hi Greg
>
> > Here is a proof of concept of one approach you could
> > take:http://groups.google.com/group/clojure/web/job-queue.clj
>
> > A set of agents are maintained to represent computation jobs. When the
> > results are gathered, the agent is thrown away. I think using multiple
> > agents in this way could be quite convenient as it means the jobs can
> > be done in parallel.
>
> > If you run the script from the command line you should get something
> > like this:
> > C:\java>clj job-queue.clj
> > (4 3)
> > (0 nil Hi mum)
> > Which are the results of multiple queued computations taken at two
> > subsequent points in time.
>
> > From your post it wasn't clear to me if your 'events' imply sequential
> > processing (which could be achieved with a single agent).
>
> > Regards,
> > Tim.
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