From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <48B56F78.6050405@domain.hid>
Date: Wed, 27 Aug 2008 17:15:04 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
MIME-Version: 1.0
References: <48B5592B.1090005@domain.hid> <48B55F7C.5030901@domain.hid>
	<48B56685.4060500@domain.hid> <48B56876.3090601@domain.hid>
	<48B568FD.9010905@domain.hid> <48B56A0C.9060006@domain.hid>
	<48B56AF6.6080509@domain.hid> <48B56C06.1030808@domain.hid>
	<48B56D05.6020509@domain.hid> <48B56E69.9000100@domain.hid>
In-Reply-To: <48B56E69.9000100@domain.hid>
Content-Type: text/plain; charset=ISO-8859-15
Content-Transfer-Encoding: 7bit
Subject: Re: [Xenomai-core] [RFC][PATCH 2/3] Switch to handle-based fast
	mutex owners
List-Id: "Xenomai life and development \(bug reports, patches,
	discussions\)" <xenomai.xenomai.org>
List-Unsubscribe: <https://mail.gna.org/listinfo/xenomai-core>,
	<mailto:xenomai-core-request@domain.hid>
List-Archive: </public/xenomai-core>
List-Post: <mailto:xenomai@xenomai.org>
List-Help: <mailto:xenomai-core-request@domain.hid>
List-Subscribe: <https://mail.gna.org/listinfo/xenomai-core>,
	<mailto:xenomai-core-request@domain.hid>
To: Jan Kiszka <jan.kiszka@domain.hid>
Cc: xenomai-core <xenomai@xenomai.org>

Jan Kiszka wrote:
> File descriptors are all identically structured objects, so at worst you
> ruin some other app's day. But the registry contains arbitrary objects
> with different internal layout. If you start assuming object_a * is
> object_b * and use the pointer etc. included in a as if they have the
> meaning of b, you quickly ruin the kernel's day as well. Therefore,
> native, e.g., does magic checks after fetching from the registry. As I
> said, this test here works differently, but it has the same effect and
> impact.

By the way, would not it make sense to have separate hash tables for
separate objects types ? I mean then we would not need any validation,
and several object types could use the same name.

-- 
                                                 Gilles.