RTEMS Event Receive Issue

[Angelo Fraietta]

Mike Siers wrote:

>Hi,
>Is it the resposibility of the calling task to clear
>the event output variable before calling the function
>rtems_event_receive()?  I do not see any code that
>resets the output value.  So if I call the function
>with a timeout and there are no events, my output
>value will be the same as the last time.
>
When you say output variable do you mean that the event flags?
I think the event status should not be changed by an unsuccesful call to 

rtems_event_receive

Or do you mean that the event set should be cleared before waiting for 
the event?

Either way, I don't belive it should be a part of the event mechanism 
because an event might be set by an ISR before waiting for the event.
If I was to go into a wait event, I would want it to return if the event 
was received before I waited for it.

>
>So can we add code to clear the output value?  If not,
>then there is a bug in the network task since the
>output event flag is not being cleared.
>
>
>Any thoughts?
>
If you require the event to be cleard before waiting for it, I belive 
that it should be done in the task / driver -- not the event.

>
>Mike Siers
>Poliac Research
> 
>

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Angelo Fraietta

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Hamilton NSW 2303

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