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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Ada OS based on Minix3
Newsgroups: comp.lang.ada
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Date: Mon, 10 Nov 2008 12:01:19 +0100
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On Mon, 10 Nov 2008 02:50:22 -0800 (PST), Ivan Levashew wrote:

>> In my opinion an Ada OS, if there should be one, must be fully OO and have
>> native Ada interface.
> 
> Which is unthinkable without Ada ABI. I'm missing Dylan's "sealed/
> unsealed".

Well, maybe. It is required if agents (mobile object) have to be supported
on the OS level.

>> An OO OS is unthinkable without MI, MD and safe
>> (non-cooperative) tasks and protected objects.
> 
> What PL family do you mean:
> Sather/Eiffel, C++, Dylan/CLOS?

Ada

> BTW, in '88 or so there existed an OO-extension for Ada. It was called
> InnovAda.

I never heard about it.

I am satisfied with Ada 95 OO model. It was consistent but incomplete. Now
it must be made finished. Major things to add are:

1. Classes for all types
2. MI
3. MD
4. Supertypes
5. Procedural types
6. Proper construction/destruction

For OS:

7. Non-cooperative multitasking

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de