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Re: [rtl] semaphore between rt and user space

To: "S.A." <sancelot@crosswinds.net>
Subject: Re: [rtl] semaphore between rt and user space
From: yodaiken@fsmlabs.com
Date: Thu, 2 Nov 2000 06:45:49 -0700
Cc: "Dresner, Norman A." <norman_a_dresner@md.northgrum.com>, yodaiken@fsmlabs.com, rtl@rtlinux.org
In-Reply-To: <3A012C2C.ADF3752A@crosswinds.net>; from S.A. on Thu, Nov 02, 2000 at 09:56:12AM +0100
References: <939BE12B0744D211BD5A00A0C9DA3D870492AE7E@xcgmd009.md.essd.northgrum.com> <3A012C2C.ADF3752A@crosswinds.net>

On Thu, Nov 02, 2000 at 09:56:12AM +0100, S.A. wrote:
> I think that the use of a fifo seems to be more a secure solution than
> using shared memory bits.

RTFifos take care of the synchronization of user/RT.

> 
> It is important to guarantee an exclusive access to shared ressources .
> 
> I tried RTAI_RTL_FIFOS from zentropix, this seems to solve the problem
> for the exchange of semaphores between RT and linux space.
> Did some people already use it  ?

Why don't you just use the standard fifos?

References:
- Re: [rtl] semaphore between rt and user space
  - From: "S.A." <sancelot@crosswinds.net>

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