[ECOS] Re: Waiting I/O operation

Alexey Shusharin mrfinch@mail.ru
Thu Jul 19 09:53:00 GMT 2007

cetoni GmbH - Uwe Kindler wrote:
> In my opinion you should go with the second thread solution.

Maybe. But in this variant I have a delay in receiving messages and 
useless processor working. :-( It seems that it will be better if I 
donate a memory for the second thread.

> I don't know if it is allowed to use flags from within DSRs but I 
> believe you can not use them and then also a callback solution would not 
> solve your problem. Your callback would need to wakup a "service thread" 
> that would signal the flag to the waiting thread - but then you would 
> also need two threads.

Why I can't use flags in DSR?
I think, I can't wait in DSR but I'm able to use cyg_flag_setbits() for 
wake-up thread. And my thread will call cyg_flag_wait() for waiting this 
and some other flags.


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