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Sender: "Team Ada: Ada Advocacy Issues (83 & 95)" <[log in to unmask]>
From: Stephen Leake <[log in to unmask]>
Date: Fri, 27 Oct 2000 09:10:27 -0400
In-Reply-To: Stephane Richard's message of "Thu, 26 Oct 2000 21:34:04 +0200"
MIME-Version: 1.0
Reply-To: Stephen Leake <[log in to unmask]>
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Stephane Richard <[log in to unmask]> writes:

> Hello again everyone,
>
> I am trying to decide between to different designs that will accomplish
> the same task.  And I was just wondering if it was possible (or even
> recommended) to do.
>
> Here's the situation via an example:
>
> - I wish to have a wrapper object that will manage a linked list of data.
>
> - I have an object that will need to call upong the Wrapper object's
> methods to insert, delete and manipulate data inside that linked list.
>
> - I have another object that will need to take the contents of the wrapper
> object's linked list and process them.
>
> - Finally I have another object that will need to take the processed
> linked list and send it say to a serial port.

All fairly clear, if high level.

> In essense, I'm assuming I can do this be either declaring 3 dlls
> for each of those objects plus the dll for the wrapper object with
> the linked list making the methods open to the outside world.

Why a dll? Why not just a package? Are the "objects" not written in Ada?

> Or I can declare a bunch of Tasks that could potentially be a task
> for each of the jobs I need done on the linked lists and execute
> them asynchroneously in a controlled environment.

Tasks are for asynchronous events. Packages are for defining objects.
You have not described any asynchronous events, so tasks are not
appropriate.

> Only 2 criteria for making this decision.
>
>    1. I would like the most speed possible.
>    2. The most reliable possible.

Write everything in Ada, link them all into one executable. Use
packages with tagged types to define objects.

> Which method would you recommend?

For an example linked list, see my web page:
http://users.erols.com/leakstan/Stephe/Ada/sal.html

--
-- Stephe

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