Re: protected type interrupts

[Jean-Pierre Rosen <rosen@adalog.fr>]

REH a �crit :
> "Jean-Pierre Rosen" <rosen@adalog.fr> wrote in message 
> news:mf6mce.8k2.ln@hunter.axlog.fr...
>> 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.
>>
> 
> Are you saying it may be better not to specify a priority?
> 
Not exactly. If your compiler doesn't use priority_ceiling by default 
(and you didn't specify it), then the priority is ignored.

Otherwise, the default priority of a protected object is Priority'Last 
(D.3(11)), which will result in ceiling violation if called from a PO 
which has a priority in the Interrupt_Priority range. You should then 
specify a priority at least as high as the one of the other PO.

-- 
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            J-P. Rosen (rosen@adalog.fr)
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