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Re: Waiting I/O operation
- From: Alexey Shusharin <mrfinch at mail dot ru>
- To: cetoni GmbH - Uwe Kindler <uwe dot kindler at cetoni dot de>, ecos-discuss at sourceware dot org
- Date: Thu, 19 Jul 2007 16:48:33 +0700
- Subject: [ECOS] Re: Waiting I/O operation
- References: <469F24AE.9060907@cetoni.de>
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.
Regards,
Alexey
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