Wouter van Ooijen escreveu:
>> The idea is that the compiler add the code automatically every few
>> normal program instructions.
>>
>> This is just a theoretical idea, I don't think it may be useful because
>> of its low efficiency.
>>     =

>
> Do you realise that 12/14 bit core PIC code (whether hand-assembly or =

> compiler generated) generally uses global variables, and is hence not =

> re-entrant? To make your idea work you would have to make unique copies =

> of all code that is shared between threads.
>   =


Yes, as I said, it is just *possible* but not efficient or even useful.

Many short functions may run atomically. Larger ones may access
variables thorough a "task private data pointer". Too much trouble.
And there is also the problem that you may not use call/return, you must
manage the call stack in software.

I'm not advocating that anyone use such a wicked thing, there are much
better solutions, but it may be possible...

Regards,

Isaac

__________________________________________________
Fa=E7a liga=E7=F5es para outros computadores com o novo Yahoo! Messenger =

http://br.beta.messenger.yahoo.com/ =


-- =

http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist