[MLton] OS.IO.poll problems
Vesa Karvonen
vesa.a.j.k at gmail.com
Wed Apr 4 04:36:32 PDT 2007
On 4/3/07, Wesley W. Terpstra <wesley at terpstra.ca> wrote:
> On Apr 2, 2007, at 4:50 PM, Matthew Fluet wrote:
[...]
> > On the other hand, one can always use pollToIODesc and
> > (pollToIODesc o infoToPollDesc) and use equality on the iodesc.
>
> That's what I'd do if I was implementing something using OS.IO.Poll.
Yes, that would be possible, but...
> Unfortunately, that mechanism is pretty weak. The few times I've done
> networking with MLton I've had to rewrap the system 'kqueue' and
> 'epoll' methods:
> svn+ssh://mlton.org/svnroot/mltonlib/trunk/ca/terpstra/st
Indeed. I think that even with just poll (or select), it would be much
better (faster) to use an interface that makes you register/deregister
fds rather than copy possibly long lists of poll entries back and forth.
> I'll note that wrapping libevent
> http://en.wikipedia.org/wiki/Libevent
> is might be a good idea if you need windows support.
Hmm... I'll have to consider that. Thanks for the tip!
-Vesa Karvonen
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