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From: Adam Beneschan <adam@irvine.com>
Newsgroups: comp.lang.ada
Subject: Re: Child vs nested package : efficiency matter
Date: Tue, 1 Jun 2010 11:35:02 -0700 (PDT)
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Date: 2010-06-01T11:35:02-07:00
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On May 29, 5:56=A0am, Yannick Duch=EAne (Hibou57)
<yannick_duch...@yahoo.fr> wrote:
> Hillo,
>
> For some reasons, I've turned some nested package -- packages nested in =
=A0
> the body of package -- into a set of child packages instead.
>
> I've noticed the application's execution time is now an average of 125% o=
f =A0
> that of the old implementation.
>
> The implementation did not changed otherwise and is still the same.
>
> What can make invokation of subprograms slower when the subprograms are i=
n =A0
> a child package rather than in a nested package ?
>
> Note: this is with optimization enabled -- with -O -- and both old and ne=
w =A0
> implementation was compiled with the same options.
>
> I can't explain that and can't imagine a reason why. That's a mystery to =
=A0
> me.

Something else that occurred to me: In the process of turning the
nested packages into child packages, were there any global variables
declared in the body of the parent package that you had to move to the
spec (probably the private part) so that they would be visible to the
child packages?

                                -- Adam