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From: Simon Wright <simon.j.wright@mac.com>
Newsgroups: comp.lang.ada
Subject: Re: Access procedure to pointer
Date: Wed, 28 May 2008 18:00:06 +0100
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Date: 2008-05-28T18:00:06+01:00
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Jean-Pierre Rosen <rosen@adalog.fr> writes:

> S�bastien a �crit :
>
>> type Signal is (SIGHUP);
>> for Signal use (SIGHUP => 1);
>>
>> type Signal_Callback is access procedure(sig: Signal);
>>
>> procedure InterceptSignal(sig: in Signal; callback: in Signal_Callback);
>>
>> procedure c_signal(sig: in Signal; callback: in System.Address);
>> pragma Import(C, c_signal, "signal");
>>
> Why don't you simply use Ada.Interrupts?

Perhaps because interrupts are not signals? (of course GNAT maps
signals to interrupts for 'complex' targets eg Linux, Windows and I
believe Mac OS X, but on VxWorks interrupts are interrupts and signals
are another matter altogether!)