From: Ludovic Brenta <ludovic@ludovic-brenta.org>
Subject: Re: Quick Protected Object question
Date: Mon, 8 Dec 2008 05:43:37 -0800 (PST)
Date: 2008-12-08T05:43:37-08:00 [thread overview]
Message-ID: <b16380cc-7f76-4827-bb4d-544863c5555e@w1g2000prk.googlegroups.com> (raw)
In-Reply-To: 7d83cfa9-a97c-4a74-8202-c15035d607fa@j39g2000yqn.googlegroups.com
On Dec 8, 2:34 pm, markp <markwor...@yahoo.com> wrote:
> I have a very quick protected object question. In a standard proected
> object setup as follows:
>
> protected Test is
> procedure A;
> procedure B;
> private
> Z : integer := 0;
> end Test;
>
> protected body Test is
> procedure A is
> begin
> < set of statements>
> end A;
>
> procedure B is
> begin
> < set of statements>
> end B;
> end Test;
>
> The question is this: when procedure A is called, are all threads that
> try to call B suspended until A finishes or, do the threads that call
> B execute as long as A is not touching the private data "Z". Is the
> lock at the procedure level or only at the data level?
At the procedure level; see ARM 9.5.1 at http://www.adaic.com/standards/05rm/html/RM-9-5-1.html
--
Ludovic Brenta.
next prev parent reply other threads:[~2008-12-08 13:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-08 13:34 Quick Protected Object question markp
2008-12-08 13:43 ` Ludovic Brenta [this message]
2008-12-09 19:59 ` micronian2
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