Yes I do. Pre-emptive scheduling will be supported in the things-to-do
periodic interrupt of the interpreter. That is between-opcodes
scheduling, while the cooperative swithes are in-opcode, typically a
function call. These will operate at high speed, using multiple stacks.
Thank you very much for the input, very helpful. I am thinking to get
rid of the stack slicing approach. All code that is totally described
in terms of how to save/restore stack state can execute on any of the
stacks. I need to find out how to manage stacks efficiently without
using much memory. Stacks must be created often. On tasklet
deactivation, its stack will be shrunk to the minimum, and on
reactivation a new one will be allocated. I need to draw some pictures
about the resulting forest. It is probably necessary to restrict free
scheduling a bit to a handful of contexts.
Cheers - chris
Sent from my iPhone
On 19.01.2010, at 20:10, Jeff Senn <[email protected]> wrote:
Christian-
I assume what you mean by this is that you would require Psyco (or
part of it) to "re-write"
tasklet code in such a way to allow tasklets to exit/enter at many
points. While that
might be interesting (and perform well) for scenarios where there
are relatively few
entry/exit points (i.e. co-operative scheduling), I wonder: do you
have a plan that makes
it work well to do "pre-emptive" scheduling of taskets?
I don't really understand very deeply how Psyco works so maybe there
is "magic" in there
that I don't know about...
-Jas
On Jan 19, 2010, at 1:29 PM, Christian Tismer wrote:
Howdy!
I have a new concept in mind that might replace Stackless as it is
known. Just a quock note, as I am away from my machine.
The plan is to get a Stackless without any restrictions, as a plain
extension module, and with full Psyco support.
Sounds like an April joke? No, I'm just leveling up on craziness. ;-)
Sent from my iPhone
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