Jens Köhler wrote:
> Hello Gilles,
>
> here is the code:
>
> RT_QUEUE myqueue;
> int retval;
> retval = rt_queue_create(&myqueue, "myqueue", 255, 10, Q_FIFO);
>
> char message[100] = "Message ";
> retval = rt_queue_write(&myqueue,message,sizeof(message),Q_NORMAL);
> //retval is 0
>
> char msgBuf[255];
> retval = rt_queue_read(&myqueue, msgBuf, sizeof(msgBuf), TM_NONBLOCK);
> //retval is always -1, why?
Probably because the callling thread is not a Xenomai thread, it is a
simple Linux thread, and as such, is not allowed to switch to primary
mode as is required by rt_queue_read.
--
Gilles.
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