[Twisted-Python] daemon thread support
Bob Ippolito
bob at redivi.com
Wed Dec 3 00:19:33 MST 2003
On Dec 3, 2003, at 1:26 AM, Andrew Bennetts wrote:
> On Tue, Dec 02, 2003 at 10:58:05PM -0500, Bob Ippolito wrote:
>> On Dec 2, 2003, at 10:10 PM, Andrew Bennetts wrote:
>>> On Tue, Dec 02, 2003 at 09:46:20PM -0500, Bob Ippolito wrote:
>>>>
>>>> What about list as the function, and itertools.imap as the argument
>>>> to
>>>> that function?
>>>
>>> Or maybe sets.Set? So long as process always returns the same value
>>> (probably None), this won't eat memory the way list would...
>>
>> sets.Set eats more memory than list does (it's a python class that
>> uses
>> a dict for storage).. if you don't want to return anything useful
>> there's always reduce(lambda a,b:None, iterable)
>
> Uh, not if the iterable returns the same element repeatedly. Compare
> the
> memory use of:
>
> sets.Set(itertools.repeat(None))
>
> vs.
>
> list(itertools.repeat(None))
>
> Your idea with reduce is better -- except that it uses a lambda.
> Somehow
> that feels like cheating ;)
Fine, no lambda, cheaper than Set (memory and cpu):
reactor.callInThread(reduce, {}.get, itertools.imap(process,
iter(queue.get, None)))
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