Re: questions about rtai-lab and qrtailab

On 10/16/2017 11:17 AM, Tom wrote:
> From
>
> https://www.rtai.org/userfiles/downloads/RTAILAB/qrtailab-0.1.12.tar.bz2
>
Qrtailab has been used because of the EFLTK troubles in setting RTAILab 
on 64 bits machines. A few fixes have made it work reliably for our 
application at hand, but we are not yet at ease with its internals.

Then is something that should be cared of. I see that RT_RPC is 
systematically called  with a null pointer, nonetheless no crash happens 
in the use I'm seeing at work here around.

How are you using it (locally vs distributed).Do you witness any crash 
without the fix you are pointing at?

Paolo

>
>
>
> At 2017-10-16 17:00:49, "Paolo Mantegazza" 
> <[email protected]> wrote:
>
>     I'll pass the question to the scicoslab interface expert.
>     On my side I would like to know where did you take qrtailab from?
>     Paolo
>
>     On 10/16/2017 10:02 AM, Tom wrote:
>>     Hi, all
>>
>>     I am new to rtai and trying to use rtai-lab with scicoslab.
>>     Config:
>>     linux 3.18.20
>>     rtai 5.0.1
>>     scicoslab 4.4.1
>>     qrtailab-0.1.12
>>
>>     I think function `set_double' in rtmain44.c goes wrong when
>>     running on x86_64 arch.
>>       unsigned long l = ((unsigned long *)from)[0];
>>       unsigned long h = ((unsigned long *)from)[1];
>>     because unsigned long would take 8 bytes.
>>
>>     And I think there should be a null pointer guard before
>>     assignment in qrtailab/src/qrtailab.h  line 115 function RT_RPC
>>     *reply = (unsigned int)ret;
>>     to
>>     if (reply)
>>             {
>>                   *reply = (unsigned int)ret;
>>             }
>>
>>     regards.
>>
>>     tom@shanghai
>>
>>
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>>
>>
>>
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>
>
>
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