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From: Jeffrey Carter <spam.jrcarter.not@spam.not.acm.org>
Subject: Re: can someone help me with this code (explanation)
Date: Thu, 25 Sep 2014 15:27:47 -0700
Date: 2014-09-25T15:27:47-07:00	[thread overview]
Message-ID: <m024t3$j1p$1@dont-email.me> (raw)
In-Reply-To: <c8jb5lFns5kU1@mid.individual.net>

On 09/25/2014 01:10 PM, Niklas Holsti wrote:
> 
> To make task-safe use of Ada.Text_IO, it should be wrapped in some way
> to ensure that only one task calls it at a time. For example, you could
> write a task with an entry like Put_Line (Message : in String) and an
> accept statement that does Ada.Text_IO.Put_Line (Message). But a
> protected-object wrapper is probably better for uses where I/O
> performance (latency) is not critical.

Except that I/O is potentially blocking, and so cannot appear in a protected
operation, meaning one needs a task one way or another.

-- 
Jeff Carter
"Blessed is just about anyone with a vested interest in the status quo."
Monty Python's Life of Brian
73


  reply	other threads:[~2014-09-25 22:27 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-25 13:44 can someone help me with this code (explanation) Stribor40
2014-09-25 14:56 ` Björn Lundin
2014-09-25 15:01   ` Björn Lundin
2014-09-25 15:54   ` Stribor40
2014-09-25 17:11     ` Niklas Holsti
2014-09-25 19:41       ` Stribor40
2014-09-25 19:53         ` Jeffrey Carter
2014-09-25 20:10         ` Niklas Holsti
2014-09-25 22:27           ` Jeffrey Carter [this message]
2014-09-26  7:04             ` Björn Lundin
2014-09-26  7:58               ` J-P. Rosen
2014-09-26 10:24                 ` G.B.
2014-09-26 11:48                 ` Björn Lundin
2014-09-26 12:49                   ` J-P. Rosen
2014-09-26 14:15                     ` Björn Lundin
2014-09-26 14:49                       ` J-P. Rosen
2014-09-26 15:31                         ` Björn Lundin
2014-09-26 16:08                           ` G.B.
2014-09-30  4:22                             ` Brad Moore
2014-09-30 21:59                               ` Georg Bauhaus
2014-10-01 15:38                                 ` Brad Moore
2014-09-26 16:23                           ` Dmitry A. Kazakov
2014-09-26 20:38                           ` J-P. Rosen
2014-09-27 18:16                             ` Björn Lundin
2014-09-26 16:43                       ` Niklas Holsti
2014-09-26 16:45                 ` Niklas Holsti
2014-10-09  2:45                   ` Randy Brukardt
2014-09-26 16:44             ` Niklas Holsti
2014-09-26  5:06           ` J-P. Rosen
2014-09-25 16:53 ` Jeffrey Carter
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