[Haskell-cafe] Re: Fwd: Will GHC finally support epoll in 2009?

On 10/12/2009 17:48, Bryan O'Sullivan wrote:

On Thu, Dec 10, 2009 at 5:01 AM, Johann Höchtl mailto:johann.hoechtl@gmail.com> wrote:

> Yes. I'm working on a patch at the moment.

Is there something planed to happen in 2010?

Retooling the I/O manager isn't a huge job, but it requires the equivalent of several weeks of work. I tossed out my initial attempt at a patch because I didn't have time to work on it, so I'm back to square one. Johan Tibell and I have had occasional discussions about picking up the thread again, but we've had a busy year and it's moderately demanding work, so nothing has actually happened.

If I develop the time and energy to take a serious crack at it, I will post here to let people know. This would be an effort where having multiple people work on different implementations concurrently would be a shame.

Bryan, if you have time could you give a brief outline of the main sticking points? My gut feeling is that it shouldn't be "several weeks of work", but admittedly I've never worked with epoll(). Perhaps we need to take a step back and think about the architecture at a higher level? Cheers, Simon