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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Freezing a task
Date: Fri, 18 Nov 2011 09:56:24 +0100
Organization: cbb software GmbH
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Date: 2011-11-18T09:56:24+01:00
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On Thu, 17 Nov 2011 17:34:48 -0800 (PST), Rego, P. wrote:

> Well, answering also Jeff, Adam and Stefan, there are some bots which are
> shared by some tasks, and each task controls just one subsystem
> reciprocally (i.e. this one is controlled at one timeslot by just one
> task), but other tasks can "steal" the thread, so they can assume the
> control over that ones.

This is what rendezvous are for. If the task A and the task B must
cooperatively do some stuff (= control a bot), they just engage a
rendezvous and perform that stuff upon the rendezvous. That would
effectively block one of them.

P.S. I don't understand this design. Why do not you have a pool of tasks
and assign a free one for each operation to be performed on the bot? Once
completed the operation, the task returns to the pool.

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