OCCAM programming probs

OCCAM programming probs

[huey]

Can any one help with a small program that operates numerous functions 
CONCURRENTLY using the SPOOL technique ?

What I am trying to do is have a spooling queue that acts as a buffer between 
several user terminals and/or programs and several print spooling programs all
which run concurrently.i.e the buffer acts as a queue.

The only functions reqd are to Append, Remove or reorder the queue.

Any suggestions on how to approach/complete this ???????

Thanks for your time.

email to Dan@joino.demon.co.uk

-- 
huey

Re: OCCAM programming probs

[Colin James III]

In article <792175283snz@joino.demon.co.uk>,
huey <huey@joino.demon.co.uk> wrote:
>Can any one help with a small program that operates numerous functions 
>CONCURRENTLY using the SPOOL technique ?
>  ...
>[a] buffer acts as a queue.
>
>The only functions reqd are to Append, Remove or reorder the queue.
>
>email to Dan@joino.demon.co.uk
>-- 
>huey

Please see:
 _Reusable_software_The_Base_object-oriented_component_libraries
by Bertrand Meyer, 1994, Prentice Hall UK.

Of particular interest to your question is pages 340/7 in the 
dispenser class section which includes CLASS _QUEUE_, _ARRAYED_QUEUE_, 
_LINKED_QUEUE_, and _BOUNDED_QUEUE_.  This is a much clearer implementation
of the algorithm (in Eiffel) than anything else I've seen, including Ada 
textbooks and Booch's components in Ada83 (or in C), which usually suffer 
from bounded/unbounded / constrained/unconstrained generic considerations 
which are not issues in Eiffel 3 *ever*.

cjames@stout.entertain.com

(I'm a six time winner:  Continuing Episcopalian, Old Line Republican, 
 Eiffel and BON aficionado, PC clone user, and not a professor.)
 

Re: OCCAM programming probs

[John Townsend]

In article <792175283snz@joino.demon.co.uk>, huey@joino.demon.co.uk (huey) writes:
>Can any one help with a small program that operates numerous functions 
>CONCURRENTLY using the SPOOL technique ?
>
>What I am trying to do is have a spooling queue that acts as a buffer between 
>several user terminals and/or programs and several print spooling programs all
>which run concurrently.i.e the buffer acts as a queue.
>
>The only functions reqd are to Append, Remove or reorder the queue.
>
>Any suggestions on how to approach/complete this ???????
>

I'm not sure that I understand what you mean by the SPOOL technique,
but I have done a fair amount of Occam proggramming, though it was a
year or so since I last did any.

From what I understand that you want (buffering) I can't see any
problem, except perhaps with the re-ordering. Occam lend itself very
well to this problem, and if you are really desperate, I can probably
find a code example somewhere.

Of course, It may be that I don't understand what it is you want :-)



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