[Python-ideas] Async API: some code to review

[Richard Oudkerk]

On 28/10/2012 11:52pm, Guido van Rossum wrote:
> I'm most interested in feedback on the design of polling.py and
> scheduling.py, and to a lesser extent on the design of sockets.py;
> main.py is just an example of how this style works out in practice.

What happens if two tasks try to do a read op (or two tasks try to do a 
write op) on the same file descriptor?  It looks like the second one to 
do scheduling.block_r(fd) will cause the first task to be forgotten, 
causing the first task to block forever.

Shouldn't there be a list of pending readers and a list of pending 
writers for each fd?

--
Richard