From: "Matthew Heaney" <mheaney@on2.com>
Subject: Re: How to avoid unreferenced objects (mutexes etc)
Date: Sat, 12 Jan 2002 17:04:59 -0500
Date: 2002-01-12T17:04:59-05:00 [thread overview]
Message-ID: <u41cg9jaqnrs56@corp.supernews.com> (raw)
In-Reply-To: a1o2h1$sfe3f$5@ID-25716.news.dfncis.de
"Nick Roberts" <nickroberts@adaos.worldonline.co.uk> wrote in message
news:a1o2h1$sfe3f$5@ID-25716.news.dfncis.de...
> However, really, a much better design is like this:
No, because protected operations can't make blocking calls.
Note that all predefined I/O packages are "potentially blocking," which
means, for example, that you can't call Text_IO from inside a protected
object.
So you still need a semaphore-style type (as in the original post), to
handle the situation in which blocking calls are made inside a critical
section. The technique shown using a Limited_Controlled type to
automatically seize and release the semaphore is a standard Ada95 idiom.
next prev parent reply other threads:[~2002-01-12 22:04 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-11 13:48 How to avoid unreferenced objects (mutexes etc) Dmitry A. Kazakov
2002-01-11 13:52 ` Lutz Donnerhacke
2002-01-11 14:47 ` Robert A Duff
2002-01-11 18:02 ` Jeffrey Carter
2002-01-11 19:40 ` Robert Dewar
2002-01-12 10:18 ` Martin Dowie
2002-01-14 8:54 ` Dmitry A. Kazakov
2002-01-12 1:11 ` Nick Roberts
2002-01-12 22:04 ` Matthew Heaney [this message]
2002-01-13 5:45 ` Nick Roberts
2002-01-13 8:21 ` tmoran
2002-01-13 16:12 ` Nick Roberts
2002-01-13 15:08 ` Simon Wright
2002-01-15 17:53 ` Nick Roberts
2002-01-13 16:51 ` Jeffrey Carter
2002-01-14 23:32 ` Matthew Heaney
2002-01-15 8:53 ` Dmitry A. Kazakov
2002-01-14 8:31 ` Jean-Pierre Rosen
2002-01-14 9:42 ` Dmitry A. Kazakov
2002-01-15 15:41 ` Matthew Heaney
2002-01-15 16:18 ` Hyman Rosen
2002-01-15 16:57 ` Darren New
2002-01-15 18:57 ` Matthew Heaney
2002-01-16 0:57 ` Darren New
2002-01-16 16:35 ` Stephen Leake
2002-01-16 18:07 ` Darren New
2002-01-16 23:18 ` Matthew Heaney
2002-01-16 23:04 ` Matthew Heaney
2002-01-17 0:21 ` Darren New
2002-01-16 15:18 ` Dmitry A. Kazakov
2002-01-15 18:59 ` Nick Roberts
2002-01-16 15:05 ` Dmitry A. Kazakov
2002-01-16 18:30 ` Matthew Heaney
2002-01-17 8:58 ` Dmitry A. Kazakov
2002-01-17 9:19 ` Lutz Donnerhacke
2002-01-17 10:42 ` Dmitry A. Kazakov
2002-01-17 10:55 ` Lutz Donnerhacke
2002-01-17 15:30 ` Dmitry A. Kazakov
2002-01-17 16:29 ` Lutz Donnerhacke
2002-01-16 20:28 ` Robert A Duff
2002-01-17 19:05 ` Nick Roberts
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox