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From: xavier grave <xavier.grave@ipno.in2p3.fr>
Newsgroups: comp.lang.ada
Subject: Re: Loadable module in Ada.
Date: Thu, 03 Dec 2009 11:00:44 +0100
Organization: In2p3
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To: Steven Shack <stevenshack@stevenshack.com>
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Steven Shack a �crit :
> 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
> 
> 
Hi,

I have done something that seems to fit with your need.
Here is a link where you will find a tgz file compiling/running under
Linux using dlsym. It is based on an abstract class that your plugin
should inherit of.

http://dl.free.fr/pWQwqMpVK

Be very careful about the elaboration code when you do some "with" of
other package. One on the "best" policy is to be the more restrictive
that you can with the packages you "with" (pragma Pure and so on...)

Hope it will help...
xavier


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