FFI to poll()

Ian Lynagh ian at well-typed.com
Sat Feb 23 15:27:23 CET 2013

On Sat, Feb 23, 2013 at 11:59:35AM +0900, Kazu Yamamoto wrote:
> >> But this is not generic enough. Any suggestions to fix this?
> > 
> > According to my manpage, it's an nfds_t. Is that type as portable as
> > poll is?
> If we use nfds_t in C source code, it is portable. But I cannot find a
> Haskell type to express it in Foreign.C.Types. So, my question is how
> I can express nfds_t in Haskell?

The best way is probably to use hsc2hs: make it a .hsc file, and use
    #type nfds_t

It's probably worth making a newtype, or at least a type synonym, for


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