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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: How to make tasks to run in parallel
Date: Tue, 17 Oct 2017 09:29:00 +0200
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Date: 2017-10-17T09:29:00+02:00
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On 17/10/2017 06:58, reinert wrote:

> I would prefer to enter data via entry/accept. But is it possible
> without giving up parallel processing? I feel it is something I should
> understand better here :-)

    select
       accept run1(a : in real) do
         x := a; -- Store parameter and let the caller go
       end run1;
       for I in 1 .. N loop -- Do the work concurrently
         x := x + Real(I)/Real(N);
         x := 0.5*x + 1.0 + sin(x)*cos(x) + sin(x) + cos(x) +
                            sin(x)*sin(x) + cos(x)*cos(x);
       end loop;
       new_line;Put("test2 x:");Put (x,4,16,0); New_Line (1);
    or terminate; -- Exit if the parent does
    end select;

First, as others mentioned, you should not do concurrent work in the 
rendezvous. Second, add "terminate" to let the task exit even if "run1" 
was never called.

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