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From: "J-P. Rosen" <rosen@adalog.fr>
Newsgroups: comp.lang.ada
Subject: Re: Finalization of library level tasks
Date: Wed, 18 Apr 2018 16:52:03 +0200
Organization: Adalog
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Xref: reader02.eternal-september.org comp.lang.ada:51596
Date: 2018-04-18T16:52:03+02:00
List-Id: <comp.lang.ada>

Le 18/04/2018 à 16:12, Dmitry A. Kazakov a écrit :
> In pseudo-code:
> 
>    task body Worker is
>    begin
>       while the object lives loop
>          do some chunk of work
>       end loop;
>    end Worker;
> 
> P.S. I posted an example in a separate thread. The posted solution
> should work except the cases when the access type is at the same level
> as the object and both are below the library level.
> 
OK. You were actually quite close... Use a killer task (with the same
master as your worker) like this:

task Killer is
   entry Never_Called;
end Killer;

task body Killer is
begin
   accept Never_Called;
exception
   when Tasking_Error =>
     -- Kill the other task
end Killer;

Hint: when the master completes, Tasking_Error is raised in all tasks
waiting on entries that depend on that master.
-- 
J-P. Rosen
Adalog
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