Re: A working document

On Sat, 22 Dec 2001, Anthony Mallet wrote:

[...]
> What I meant by data is actually the production of other modules (aka
> 'posters' in the current version of GenoM).
> Basically, posters are shared data structures, which are expected to be
> always 'consistent', because every particular poster is produced by a
> _single_ module.
[...]
> Thus posters are (or should be :) 'consistent data structures'. Using the
> data contained within posters can be done thanks to a library which can
> be shared between the producer and the consumer.

This is called a ``monitor'' in the terminology of Software Patterns.

[...]
> I would distinguish 3 class of user:
> . adavanced/application builder (whole system knowledge)
> . module developer (single module knowledge)
> . dummy user (user of the system/modules, and/or developer of other modules)

This subdivision in three makes sense to me.
(``Architect/manufacturer/user''?)

> Only the first type of user  cares about communication mechanisms (setup,
> implementation etc.).
> The second type describes its needs in terms of communication (data
> structures?).
> The third one does not (should not have to) care of communication.

Agreed.

> Codels are written by the second class of user (and that's all what is
> needed to write a module, besides the interface description).

How would you then call the code written by the ``architects'' and the
``users''?

[...]
> Thus there is only one type of codel: it receives data, and structures
> the execution of an algorithm.

So, a codel could not generate data on its own?

Herman