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From: Maciej Sobczak <see.my.homepage@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Properties
Date: Sat, 4 Dec 2010 14:13:46 -0800 (PST)
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Date: 2010-12-04T14:13:46-08:00
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On Dec 3, 10:32=A0pm, "Randy Brukardt" <ra...@rrsoftware.com> wrote:

> Indeed, I think that *any* library intended for general Ada usage ought t=
o
> be task-safe to the extent that Ada.Text_IO and Ada.Containers are (acces=
s
> to different objects of the library by different tasks always work).

What are different objects?

Certainly, AARM does not allow several tasks to access distinct
elements of the same container - because, well, even though the
elements are different, they belong to the same container.

> That
> surely includes GUI libraries.

...where almost everything is a child of some bigger container.

I understand what you try to convey (and to a large extent I agree
with it), but the analogy with containers does not work. By that
analogy it should be forbidden to access two controls of the same
window from different tasks without additional synchronization.

> That's all that Claw guarantees

I can imagine that it was very expensive to achieve.

--
Maciej Sobczak * http://www.inspirel.com