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From: Jean-Pierre Rosen <rosen@adalog.fr>
Subject: Re: protected type interrupts
Date: Fri, 25 Aug 2006 08:48:17 +0200
Date: 2006-08-25T08:48:17+02:00	[thread overview]
Message-ID: <mf6mce.8k2.ln@hunter.axlog.fr> (raw)
In-Reply-To: <lXqHg.151559$1i1.129101@attbi_s72>

Jeffrey R. Carter a �crit :
> If a call to a procedure or entry of a protected object changes the 
> barrier on another entry to True, the thread of control that changed the 
> barrier is allowed to execute the newly open entry on behalf of the task 
> that called it. So the entry is not being executed in the interrupt 
> handler, but by the thread of control that called the interrupt handler.
> 
But since you specified a priority for the PO (and assuming 
priority_ceiling), you still execute at interrupt priority. Depending on 
the hardware and how priorities are managed, this may delay or hide 
actual interrupts.

-- 
---------------------------------------------------------
            J-P. Rosen (rosen@adalog.fr)
Visit Adalog's web site at http://www.adalog.fr



  reply	other threads:[~2006-08-25  6:48 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-08-24 14:47 protected type interrupts REH
2006-08-24 15:39 ` Jean-Pierre Rosen
2006-08-24 16:23   ` REH
2006-08-24 18:15     ` Adam Beneschan
2006-08-24 19:16       ` REH
2006-08-24 21:16         ` Adam Beneschan
2006-08-24 21:39           ` REH
2006-08-25  6:45           ` Jean-Pierre Rosen
2006-08-24 23:55         ` Jeffrey R. Carter
2006-08-25  6:42         ` Jean-Pierre Rosen
2006-08-24 23:47     ` Jeffrey R. Carter
2006-08-25  6:38     ` Jean-Pierre Rosen
2006-08-24 20:11 ` Simon Wright
2006-08-24 23:50 ` Jeffrey R. Carter
2006-08-25  6:48   ` Jean-Pierre Rosen [this message]
2006-08-25 11:33     ` REH
2006-08-25 17:27       ` Jean-Pierre Rosen
2006-08-25 20:57     ` Jeffrey R. Carter
2006-08-25 23:17       ` REH
2006-08-26  6:38         ` Jeffrey R. Carter
2006-08-26 13:16           ` REH
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