[Twisted-Python] Logging observers and threads

[exarkun at twistedmatrix.com]

On 12 Jul, 07:33 pm, tobias.oberstein at tavendo.de wrote:
>>libuv is a giant pile of new, unaudited C code that didn't even have a 
>>passing
>>test suite until a month or two ago.  Please feel free to write a 
>>reactor for it;
>
>> From what I've read, libuv has designed it's API around the pattern
>
>A. "do operation and get notified when done"
>
>instead of
>
>B. "get notified when ready and then do operation".
>
>The native Windows API is A., Posix the B and operation = read, write, 
>open, stat, ..
>
>I think A. is more natural, since how do wait for a file to be ready to 
>get open'ed/stat'ed?

This isn't really attacking the important part of the matter.  I suppose 
it's a necessary decision to make, but it still leaves 99% of the API 
unspecified.

Twisted essentially always aims for A, so it's probably been an unspoken 
assumption between the people (at least with whom I've been) discussing 
this topic that this is what we'd want in Twisted.

Having answered that question, there's still the question of what 
operations to provide and what the interface to those operations is.

For the recorded efforts so far, see this wiki page:

http://twistedmatrix.com/trac/wiki/Specification/AsynchronousFileInputOutput

which has been sitting, largely untouched, for several years now, due to 
apparent lack of interest.

Rather than beginning the entire effort anew, I'd rather see additions 
to and criticisms of the work done already.

Jean-Paul