From: dmitry@elros.cbb-automation.de (Dmitry A. Kazakov)
Subject: Re: How to avoid unreferenced objects (mutexes etc)
Date: Tue, 15 Jan 2002 08:53:21 GMT
Date: 2002-01-15T08:53:21+00:00 [thread overview]
Message-ID: <3c43e7ad.87256437@News.CIS.DFN.DE> (raw)
In-Reply-To: u46qbtkq462b56@corp.supernews.com
On Mon, 14 Jan 2002 18:32:35 -0500, "Matthew Heaney" <mheaney@on2.com>
wrote:
>Yes, a semaphore all by itself is dangerous, because you can forget to
>release it. But when used in conjuction with a controlled object, the
>release is guaranteed to happen, so there is no danger.
IMO, when it is said that semaphore is a low-level mechanism, it means
approximately the following. Tasks and protected objects may have
entries implementing *something* [useful (:-))]. In contrary to this,
semaphores just implement themselves. A semaphore is useless without
the resource it blocks. But then why is it separated from the
resource?
Regards,
Dmitry Kazakov
next prev parent reply other threads:[~2002-01-15 8:53 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
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 [this message]
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