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From: Mark Lorenzen <mark.lorenzen@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Loadable module in Ada.
Date: Thu, 3 Dec 2009 05:40:17 -0800 (PST)
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Date: 2009-12-03T05:40:17-08:00
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On 3 Dec., 10:36, Steven Shack <stevensh...@stevenshack.com> wrote:
> I'd like to create a loadable module in an Ada program. I've searched
> around, but can't
> seem to find any examples of this. Say I've got some calculation or a
> driver and I'd like to have
> multiple different versions of it with the same interface. I'd like to
> be able to load and replace
> these modules at runtime.
>
> In C I'd do this with pic code, dlsym and function pointers. I can't
> seem to find the equivalent
> in Ada. Can anyone help me out?
>
> Thanks

I'm not sure what you mean by loadable module, but if you mean dynamic
linking at run-time, you should take a look at this very interesting
article:
http://www.adacore.com/wp-content/uploads/2005/04/dynamic_plugin_loading_with_ada.pdf

Note that you will of course still need support from the OS, so there
is no pure Ada
solution, just as there is no pure C solution (the dl* system calls
just happen to
have a C API).

- Mark