[ECOS] Waiting I/O operation

Andrew Lunn andrew@lunn.ch
Fri Jul 20 19:31:00 GMT 2007


On Thu, Jul 19, 2007 at 12:53:12PM +0700, Alexey Shusharin wrote:
> Hello all,
>
> My eCos application works with CAN I/O driver and has one thread for 
> processing CAN messages. I call cyg_io_read() and thread start waiting 
> incoming message. This situation is clear.
>
> However I've decided to add other functionality to the thread therefore it 
> should wait not only I/O operation (for ex: some event flags). Now I have 
> these variants:
>
> 1. Create a second thread :-(
> 2. Make non-blocking read with a small time interval :-((
> 3. Add a callback functionality to CAN I/O driver and wake-up the thread in 
> callback function then message is coming

Threads in eCos are light weight. So 1) is the preferred option. 

        Andrew

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