comp.lang.ada
 help / color / mirror / Atom feed
From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Is Text_IO.Put_Line() thread-safe?
Date: Sat, 16 Jun 2012 09:51:50 +0200
Date: 2012-06-16T09:51:50+02:00	[thread overview]
Message-ID: <13s745cm43h$.w4oy87yh4w9b$.dlg@40tude.net> (raw)
In-Reply-To: jrh7lv$4qg$1@dont-email.me

On Sat, 16 Jun 2012 08:04:47 +0200, J-P. Rosen wrote:

> Le 16/06/2012 04:00, BrianG a �crit :
>> On the Put_Line issue, why not simply wrap it in a protected object
> Because all IO's are potentially blocking operations.

And even if they would not be, one should keep protected actions as short
as possible.

> By all means, use a task and a rendezvous!

An alternative is a reentrant mutex seized and released by a controlled
holder object.

> Simple, no problem, it works.
> PO are for simple, relatively low level stuff (in general). Rendezvous
> are generally better for high level synchronization.

Yes, but also significantly slower. Usually some combination of both is the
best solution.

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



      parent reply	other threads:[~2012-06-16  7:52 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
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 [this message]
replies disabled

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox