[okl4-developer] Bug in multithread Example

[Nelson Tam]

Hi Martin,

On 05/03/2008, at 10:58 PM, Martin Lawitzky wrote:

> Unfortunately, thread_l4tid() trashes the MSRs. Hence, all the  
> MsgClear Set_MsgLabel and MsgLoad is irrelevant.
>
> I tried to figure out how to send any useful stuff in the message  
> registers. I always received just trash at the callee.
> I checked every single line in the IPC path before I found out, that  
> thread_l4tid() is more than an innocent macro.
>
> Now I know, but maybe you should insert a tiny comment in the  
> example for the next release. Or better don't nest the thread_L4tid  
> function in the L4_Call to make the 3 lines above even somewhat  
> useful.


Thanks for picking that up!  The multithread example is used mainly to  
demonstrate a ping-pong IPC between two threads, with less emphasis on  
the message payload.  Nonetheless we'll take note in the future.

--
(nt)

Nelson Tam
nelson at ok-labs.com