[Stackless] Stackless API

[Christian Tismer]

Arman Bostani wrote:

> arman>> * If the tasklet has a single frame and it performs a python 
> "return",
> arman>>   the caller of tasklet.run gets the return value.
> 
> tismer> What is the caller. What is the caller?
> tismer> You might think that run() defines the caller. But run() is
> tismer> an artificial thing at the moment, just there to make sure
> tismer> that the spelled tasklet is run right now.
> tismer> We might have to re-consider run(), if it should carry semantics
> tismer> like being a real caller.
> tismer> Again, I need this discussion on the mailing list!
> 
> Yes, I consider the caller of run() to be the "caller".

[and many considerations and complaints followed...]

Ok, I did the simplest possibole compromise for the
moment, which allows you to "get at the return value"
of any tasklet.
The last returned value of the frasmes which constitute
a frame is no longer discarded, but assigned to the tasklet's
tempval field. Given that you are holding a reference to your
tasklet, you are always able to pick up this return value.

This solution doesn't hurt anybody and most probably doesn't
break any code.

cheers - chris

p.s.: Next to come: pdb support

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