[ECOS] scheduling on eCos (with synthetic)

trollepi jj jackoaway@hotmail.com
Tue Jun 3 13:36:00 GMT 2008


Hi,
I read context.S and I modify on the stack the value of HAL_SavedRegisters 
structure saved during the context switch.
It almost work. :D
Thanks for reply.
jjp
----------------------------------------
> Date: Tue, 3 Jun 2008 11:26:39 +0100
> From: bartv@ecoscentric.com
> To: jackoaway@hotmail.com
> CC: ecos-discuss@ecos.sourceware.org
> Subject: Re: [ECOS] scheduling on eCos (with synthetic)
> 
>>>>>> "jjp" == trollepi jj  writes:
> 
>     jjp> I'm working on the synthetic target (Fedora core 8) and I
>     jjp> create a program that have 2 threads (A and B). In thread A I
>     jjp> try to modify the execution flow of thread B (e.g. to
>     jjp> simulate a signal without cyg_hal_sys_[ kill | procmask
>     jjp> |...]) and I have several questions :
>     
>     jjp> 1) Where eCos scheduler (on the synthetic target) store saved
>     jjp> data of threads that are not currently runnning?
> 
>     jjp> 2) Is it possible to get those informations with kapi?
>     jjp> Thanks for your future reply.
> 
> 1) in this area the synthetic target is no different from any other
>    target.
> 
> 2) there is no kernel API for this. The closest you can get is to
>    enable CYGVAR_KERNEL_THREADS_LIST and then use the C++ functions
>    Cyg_Thread::get_list_head() and Cyg_Thread::get_list_next(). You
>    can then access the thread objects directly, but you will need to
>    look at the kernel headers and sources to make sense of it all. Be
>    aware that the kernel internals may change at any time.
> 
> Bart
> 
> -- 
> Bart Veer                                   eCos Configuration Architect
> eCosCentric Limited    The eCos experts      http://www.ecoscentric.com/
> Barnwell House, Barnwell Drive, Cambridge, UK.      Tel: +44 1223 245571
> Registered in England and Wales: Reg No 4422071.
> 
> 
> -- 
> Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
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> 

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