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From: "Jeffrey R. Carter" <spam.jrcarter.not@acm.nospam.org>
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Newsgroups: comp.lang.ada
Subject: Re: Finalization of static package variables
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Date: 2007-05-16T16:47:08+00:00
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Adam Beneschan wrote:
> 
> So, to go back to a point I briefly mentioned in my previous post:
> does Ada need a feature that would allow you to call your own
> finalization procedure or something when the environment task is
> completing, so that you don't have to do this using trickery?  Maybe
> something like:
> 
>     package Ada.Finalization.Environment is
>          type Finalization_Proc is access procedure;
>          procedure At_Environment_Task_Completion (Proc : in
> Finalization_Proc);
>     end Ada.Finalization.Environment;
> 
> Then, the body of the "Environment_Task" implicit task would call the
> main subprogram and then call any procedures registered with
> At_Environment_Task_Completion, in arbitrary order; you could possibly
> add an exception handler to the Environment_Task body to call the
> finalization procedures too.
> 
> That would be a simple way to solve this sort of problem without
> adding any language syntax.

Not for this problem. This was simply a misunderstanding of how to use 
JEWL; JEWL windows should always be explicitly closed.

In the general case, I'd think this indicates a design problem, not a 
failure of the language.

-- 
Jeff Carter
"I like it when the support group complains that they have
insufficient data on mean time to repair bugs in Ada software."
Robert I. Eachus
91