In re: improving async support in psycopg

Hello.

I have already done a similar work, though much more invasive and 
resulting in what amounts to a fork of psycopg2.

Most code changes were in pqpath.c. Although my coroutine/event-loop 
library is quite different from the gevent, general principles are same 
and I hope one can find some insights on how it's done.

http://code.google.com/p/coev/source/browse/python-psycoev/psycoev/pqpath.c
http://code.google.com/p/coev/source/browse/python-psycoev/pqpath-doc.txt

Also see the interesting case of closing a connection what has been 
garbage-collected on interpeter exit, when the event loop has already 
stopped - pq_close() at pqpath.c:710



Btw, this coev framework runs pylons/django apps without code 
modifications apart from some module name substitution.

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./lxnt