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John,

That would work as a system to end the NEP, but you still have the problem
of your NEP having to poll the folder at a fixed interval. If it's sleeping
when the ENDSBS/ENDSYS/ENDJOB command is used, you wouldn't be able to end
gracefully...

The nice thing about using a data queue is that you can specify a 'maximum
sleep time' but also simply say 'wait until an entry appears on the data
queue'. That way, your program won't ever wake up until it needs to.

I know on the SystemiNetwork forums (
http://forums.systeminetwork.com/isnetforums/) other people have asked about
the equivalent functionality for the IFS (i.e. the ability to have some sort
of signal sent when a file is created in a folder). I'm pretty sure someone
had a solution, but the search facility on that forum is really limited, so
I couldn't find anything immediately.

Rory

p.s. Actually, my first paragraph isn't entirely accurate - you
*can*specify a procedure to be run when the activation group ends -
CEE4RAGE.
This has a number of limitations (e.g. won't work if the program is running
in the default AG), but may be of use. Having said that, using a signal
system may be simpler in the long run, since it makes for a more 'complete'
system.

On Tue, May 19, 2009 at 11:45 AM, John Rusling <jrusling@xxxxxxxxxxxxxxxxxxx
wrote:

Rory,

Thanks for the ideas, I agree with your best method and may do it that way.
(Also, hadn't heard that 'sleep can be defined to wake up with signals...')

What I'm building is an rpg listen program to check an ifs folder
for any files in it. I'm not currently using a data queue for doing this,
I'm using the sleep api.

Only thing I've thought up myself is when I want to end the listener
job/program,
drop a specifically named file into the folder, ... named 'QUIT.TXT' maybe,
Then have the listener check for that file's existence each time it polls,
and if it finds 'QUIT.TXT' file in the folder, end gracefully.

John

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