From: "Peter Wächtler" <pwaechtler@loewe-komp.de>
To: Vladimir Zidar <vladimir@mindnever.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Process-Shared Mutex (futex) - What is it good for ?
Date: Fri, 07 Jun 2002 10:35:55 +0200 [thread overview]
Message-ID: <3D00706B.1070906@loewe-komp.de> (raw)
In-Reply-To: <1023380463.1751.39.camel@server1>
Vladimir Zidar wrote:
> Nice to have everything as POSIX says, but how could process-shared
> mutex be usefull ? Imagine two processes useing one mutex to lock shared
> memory area. One process locks, and then dies (for example, it goes
> sigSEGV way). Second process could wait for ages (untill reboot ?) and
> it won't get lock() on that mutex ever. Wouldn't it be more usefull to
> have automatic mutex cleanup after process death ? Just make a cleanup,
> and mark it as 'damaged', so other processes will eventualy get error
> saying that something went wrong.
>
>
Look at kernel/futex.c in 2.5 tree.
I vote for killing the "dangling" process - like it's done in IRIX.
next prev parent reply other threads:[~2002-06-07 8:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-06 16:21 Process-Shared Mutex (futex) - What is it good for ? Vladimir Zidar
2002-06-07 8:35 ` Peter Wächtler [this message]
2002-06-07 20:17 ` Vladimir Zidar
2002-06-09 9:49 ` Peter Wächtler
2002-06-10 15:43 ` Vladimir Zidar
2002-06-11 13:19 ` Peter Wächtler
2002-06-11 17:18 ` Vladimir Zidar
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