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Date: Mon, 09 Jul 2012 14:38:50 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai] shared memory segments
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To: "Jorge Ramirez Ortiz, HCL Europe" <Jorge.Ramirez-Ortiz@hcl.com>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>

On 07/09/2012 12:26 PM, Jorge Ramirez Ortiz, HCL Europe wrote:
> Hi all, I am doing a port of a  shared library; in this library , a
> shared memory segment is being mapped (now using the Xenomai POSIX
> skin.) Some semaphores and data are placed on that shared segment.
> 
> Is there a way to mark the shared memory segment for deletion
> (unlink) after the last process detaches it (basically what
> shmctl(shmid, IPC_RMID, &shmInfo) does) cheers Jorge

No, but you can "shm_unlink" it when the last process has attached, this
will make it inaccessible to new processes, but still usable by
processes already attached. And the shared memory segment will be
destroyed when the last process detaches.

-- 
					    Gilles.