[Stackless] Context Switching and Queues
richard.m.tew at gmail.com
Sun Sep 2 23:52:31 CEST 2007
On 9/2/07, Andrew Francis <andrewfr_ice at yahoo.com> wrote:
> tasklets that can run, a chance to run. The important
> point is each time, a channel.send occurs, the
> producer is re-scheduled. I felt there was needless
> context switching.
Maybe I have skimmed past parts of your post which would suggest this
is not the case, but perhaps the 'preference' attribute on the channel
class will be of help?
-1 = prefer receiver 1 = prefer sender 0 no preference
I believe if you were to set this to 1 and a receiver was waiting on
the other end, the sender would stay the current tasklet and the
receiver would be put next in line to be scheduled.
>>> import stackless
>>> c = stackless.channel()
>>> def f():
... print 'sending'
... print 'sent'
>>> def g():
... print 'receiving'
... print 'received'
>>> c.preference = 1
<stackless.tasklet object at 0x01618630>
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