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From: Maciej Sobczak <no.spam@no.spam.com>
Subject: Re: Ravenscar - program termination
Date: Tue, 30 Jan 2007 09:09:11 +0100
Date: 2007-01-30T09:09:11+01:00	[thread overview]
Message-ID: <epmuf7$ihm$1@cernne03.cern.ch> (raw)
In-Reply-To: <87zm81txs1.fsf@ludovic-brenta.org>

Ludovic Brenta wrote:

>> Do I understand correctly that Ravenscar programs are by definition
>> running forever? What about programs that are expected to finish?
> 
> Yes, it is my understanding as well, and I'm happy with that.
> 
>     I remember being impressed with Ada because you could write an
>     infinite loop without a faked up condition. The idea being that in
>     Ada the typical infinite loop would normally be terminated by
>     detonation.  -- Larry Wall

:-)

> The Ravenscar profile is specifically targeted at high-integrity
> systems, where infinite loops are, I think, the norm.

Sorry, but I don't see anything in the concept of high-integrity 
software that would make it a norm. High-integrity software is a set of 
quality objectives, whereas infinite loops are (or aren't) part of 
system requirements. These should stay independent, even though I 
understand that expectations for both often come in pairs.

OK, just nit-picking. ;-)
I wanted to be sure that I understand it correctly, thanks.
Still, it looks like I cannot say:

pragma Profile(Ravenscar);

in my Hello World program even though this program meets the objectives 
of the profile. That's not fair! :-)

-- 
Maciej Sobczak : http://www.msobczak.com/
Programming    : http://www.msobczak.com/prog/



  reply	other threads:[~2007-01-30  8:09 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-29 16:34 Ravenscar - program termination Maciej Sobczak
2007-01-29 19:53 ` Ludovic Brenta
2007-01-30  8:09   ` Maciej Sobczak [this message]
2007-01-30  9:37     ` Markus E Leypold
2007-01-30 17:48       ` Jeffrey R. Carter
2007-01-31  9:01       ` Maciej Sobczak
2007-01-31  9:59         ` Ludovic Brenta
2007-01-30 14:24     ` matteo.bordin
2007-01-30 19:15       ` Niklas Holsti
2007-01-30 20:30         ` Robert A Duff
2007-01-31  7:53           ` Niklas Holsti
2007-01-31  8:12             ` Ludovic Brenta
2007-01-31  8:59               ` Niklas Holsti
2007-01-31 18:02               ` Jeffrey R. Carter
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