Re: Loadable module in Ada.

[Steven Shack <stevenshack@stevenshack.com>]

Thank you very much. This shows me exactly how to do what I want.
I was hoping for a pure ada solution, but if I have to do dlsym I'm 
fine with that.
I already know dlsym so it's not a problem.

On 2009-12-03 02:00:44 -0800, xavier grave <xavier.grave@ipno.in2p3.fr> said:

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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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