And in fact, I am working on exactly this kind of functionality, soon to be checked into stackless as part of the proposed "stacklesslib" package. Stay tuned. K
From: [email protected] [mailto:[email protected]] On Behalf Of Christian Tismer Sent: 17. apríl 2010 17:39 To: The Stackless Python Mailing List Cc: Andrew Tutt Subject: Re: [Stackless] Interruptable wait aka Receive with Timeout On 4/17/10 4:34 PM, Andrew Tutt wrote: This idiom has probably already been contributed, but the following code implements "interruptable wait" which could also be thought of the opposite way, as implementing receive() with a timeout. Also, I've taken the liberty on the following code of actually using a small sleep call between schedules. This, I have found massively decreases CPU load while altering my performance very little. Your results may vary, but as you may already be aware, there is no way that I can think of that one can implement sleep that is not busy in stackless, so this is the next best thing. You could easily extend it to make it tweak the length of the time.sleep based on load of course. Without looking at the code now, who says that a non-busy sleep cannot be implemented? Make a timer class with a singleton instance that keeps track of all sleepers. As soon as all but one tasklets are sleeping, the last tasklet can compute the time until one will wake up, and really sleep for that period. ciao - chris -- Christian Tismer :^) <mailto:[email protected]><mailto:[email protected]> tismerysoft GmbH : Have a break! Take a ride on Python's Johannes-Niemeyer-Weg 9A : *Starship* http://starship.python.net/ 14109 Berlin : PGP key -> http://wwwkeys.pgp.net/ work +49 30 802 86 56 mobile +49 173 24 18 776 fax +49 30 80 90 57 05 PGP 0x57F3BF04 9064 F4E1 D754 C2FF 1619 305B C09C 5A3B 57F3 BF04 whom do you want to sponsor today? http://www.stackless.com/
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