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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: Ravenscar - program termination
Date: Tue, 30 Jan 2007 15:30:58 -0500
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Date: 2007-01-30T15:30:58-05:00
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Niklas Holsti <niklas.holsti@nospam.please> writes:

> matteo.bordin@gmail.com wrote:
>   [ snip ]
>> On real-time kernels supporting the Ravenscar profile, even the main
>> procedure must contain an infinite loop.
>
> I don't think that is an Ada requirement. As I understand it, under the
> Ravenscar profile the environment task is the master of all application
> tasks, so it will await their termination; since they never terminate,
> neither does the environment task (RM 2005 10.2(25)), even if the main
> procedure terminates and returns to the body of the environment task.

Then what would happen if there were no tasks other than the environment
task?

> I have seen a Ravenscar Ada implementation that requires the main
> procedure to end with an infinite loop, but I think that is a
> non-standard requirement.

Why so?  The RM wording says "all tasks", and that includes the env
task.

- Bob