Re: [Xenomai-help] rt_task_bind() and timeout values

[Philippe Gerum <rpm@xenomai.org>]

Stefan Kisdaroczi wrote:
> Hi all,
> 
> If I call rt_task_bind() with a timeout value other than TM_NONBLOCK or
> TM_INFINITE
> it works not as expected (by me).
> 
> System: Debian Lenny with Xenomai 2.4.3 and Kernel 2.6.24.
> 
> The attached example calls 3 times rt_task_bind() for a nonexistent task:
> 
> 1. dont wait: rt_task_bind(&task,"SomeTaskName",TM_NONBLOCK)
>   -> returns -11 (EWOULDBLOCK) -> OK
> 
> 2. wait 5 secs: rt_task_bind(&task,"SomeTaskName",5000000000LL);
>   -> returns immediately -13 (EACCES) without waiting -> ?
>   -> I expected ETIMEDOUT after 5 seconds
> 

"SomeTaskName" was found in the registry, but suddenly disappeared while in the
process of returning its handle (we do post-validation after binding). That task
has probably exited prematurely.

> 3. wait forever: rt_task_bind(&task,"SomeTaskName",TM_INFINITE);
>   -> blocks a expected -> OK
> 
> I have the same problem with rt_queue_bind() calls.
> 
> Do i expect something wrong?
> 
> Thanks for your help!
> 
> kisda
> 
> 
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-- 
Philippe.