[Stackless] Re: [Python-Dev] Stackless Design Q.
tismer at tismer.com
Thu Feb 21 13:13:28 CET 2002
Greg Ewing wrote:
> Christian Tismer <tismer at tismer.com>:
>>But auto-scheduled frames are a diffeent kind
>>of thing than those which are in "waiting for data"
>>state. I need to distinguish them or I will crash.
> If you get rid of the idea of passing values between tasklets as part
> of the switching process, then this distinction disappears. I think
> that value-passing and tasklet-switching are orthogonal activities and
> would be better decoupled.
Hmm, first I thought you were wrong:
Any Python function that calls something, may it be a stackless
schedule function or something else, expects a value to
be returned. Always and ever.
But when I have a scheduler counter built into the Python
interpreter loop, then a schedule will happen *between*
opcodes. Such a frame is not awaiting data, and therefor
not suitable to be switched to by one which is in data
Now I see it: You mean I can make this schedule function behave
like a normal function call, that accepts and drops a dummy
value? In fact, this would make all tasklets compatible.
thinking - thanks - chris
Christian Tismer :^) <mailto:tismer at tismer.com>
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