Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail
From: Terry Reedy <tjreedy@udel.edu>
Newsgroups: comp.lang.python
Subject: Re: how to convert code that uses cmp to python3
Date: Fri, 8 Apr 2016 02:20:15 -0400
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On 4/8/2016 12:22 AM, Marko Rauhamaa wrote:
> Paul Rubin <no.email@nospam.invalid>:
>
>> Marko Rauhamaa <marko@pacujo.net> writes:
>>> Guido chose a different method to implement timers for asyncio. He
>>> decided to never remove canceled timers.

Only initially.  He approved a change immediately when presented with a 
concrete problem.

>> Oh my, that might not end well. There are other approaches that don't
>> need AVL trees and can remove cancelled timers, e.g. "timer wheels" as
>> used in Erlang and formerly (don't know about now) in the Linux
>> kernel.
>
> The issue is known. It has been tackled with a kind of a "garbage
> collection" scheme:
>
>     <URL: https://bugs.python.org/issue22448>

and fixed 1 1/2 years ago.


-- 
Terry Jan Reedy