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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Interrupts handling in ADA
Date: Tue, 13 Dec 2011 20:58:01 +0100
Organization: cbb software GmbH
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Date: 2011-12-13T20:58:01+01:00
List-Id: <comp.lang.ada>

On Tue, 13 Dec 2011 11:01:00 -0800 (PST), Ada BRL wrote:

> So, when buffer is NOT empty I will execute Get AND Put if both have
> queued tasks (I cannot know a-priori the order of execution) or Get OR
> Put if only one of the two has queued tasks.

You always execute Get or Put. Select accepts only one alternative. If more
than one alternatives are open and have tasks awaiting, select chooses one
of them, just one.

Normally select is placed in an enclosing loop:

   loop
      select
         accept This;
      or
         accept That;
      or
         terminate;
      end select;
   end loop;

Once an alternative is selected and serviced the loop reiterates the select
statement and the next alternative is selected.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de