From: Jeffrey Carter <spam.jrcarter.not@spam.not.acm.org>
Subject: Re: Is Text_IO.Put_Line() thread-safe?
Date: Thu, 14 Jun 2012 11:56:05 -0700
Date: 2012-06-14T11:56:05-07:00 [thread overview]
Message-ID: <jrdc48$14h2$1@adenine.netfront.net> (raw)
In-Reply-To: <93201f1a-d668-485e-83b4-492bc283f36e@googlegroups.com>
On 06/14/2012 05:53 AM, awdorrin wrote:
>
> One module is called 'Common' and is a central 'shared memory' location. The
> other modules will call functions in Common to request chunks of memory in
> which to store data structures.
>
> As the modules initialize themselves, they call another routine in Common to
> wait until all tasks are ready (basically there is an array defined in common
> which has an element for each module, the module's corresponding element is
> set when the module is ready to proceed.)
This design sounds suspect to me. Everything in Common needs to be protected if
it's being accessed by multiple tasks.
> I was having issues with this 'rendezvous' mechanism, because one of the
> modules was dying and all the other tasks were waiting on it, without giving
> any indication, so I added a Text_IO.Put_Line() to print some debug
> information.
>
> Text_IO.Put_Line( Proc_Enum'Image(thisPID)&" waiting for"&
> Proc_Enum'Image(waitPID));
Is this in Common, or in the tasks that use Common?
--
Jeff Carter
"English bed-wetting types."
Monty Python & the Holy Grail
15
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next prev parent reply other threads:[~2012-06-14 18:56 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-14 12:53 Is Text_IO.Put_Line() thread-safe? awdorrin
2012-06-14 13:49 ` Robert A Duff
2012-06-14 14:35 ` Adam Beneschan
2012-06-14 14:38 ` Dmitry A. Kazakov
2012-06-14 14:56 ` J-P. Rosen
2012-06-14 16:01 ` Dmitry A. Kazakov
2012-06-14 18:34 ` Robert A Duff
2012-06-21 19:01 ` Randy Brukardt
2012-06-14 18:29 ` Robert A Duff
2012-06-21 19:04 ` Randy Brukardt
2012-06-14 21:14 ` tmoran
2012-06-14 14:42 ` awdorrin
2012-06-14 18:24 ` Robert A Duff
2012-06-14 20:37 ` awdorrin
2012-06-14 21:37 ` Robert A Duff
2012-06-15 5:32 ` Georg Bauhaus
2012-06-15 7:22 ` Dmitry A. Kazakov
2012-06-15 21:32 ` Robert A Duff
2012-06-16 7:41 ` Dmitry A. Kazakov
2012-06-15 21:27 ` Robert A Duff
2012-06-14 18:56 ` Jeffrey Carter [this message]
2012-06-14 20:50 ` awdorrin
2012-06-14 21:41 ` Robert A Duff
2012-06-15 12:39 ` awdorrin
2012-06-14 22:17 ` Jeffrey Carter
2012-06-14 22:40 ` Simon Wright
2012-06-14 23:35 ` Jeffrey Carter
2012-06-15 5:04 ` Simon Wright
2012-06-15 5:41 ` Jeffrey Carter
2012-06-21 19:20 ` Randy Brukardt
2012-06-16 2:00 ` BrianG
2012-06-16 6:04 ` J-P. Rosen
2012-06-16 6:49 ` Simon Wright
2012-06-16 7:58 ` Dmitry A. Kazakov
2012-06-16 8:03 ` Simon Wright
2012-06-16 8:14 ` Dmitry A. Kazakov
2012-06-21 19:27 ` Randy Brukardt
2012-06-16 7:51 ` Dmitry A. Kazakov
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