[Haskell-cafe] Re: Hugs vs GHC (again)was: Re: Somerandomnewbiequestions

[Keean Schupke]

can't GHC do this using the threaded RTS?

    Keean.

> John Meacham wrote:
>
> >Actually, If I were writing new haskell libraries, I would use mmap
> >whenever I could for accessing files. not only does it make the file
> >pointer problem go away, but it can be drastically more efficient.
>
> I'm not sure this is a good idea, because GHC really needs 
> non-blocking I/O to support its thread model, and memory-mapped I/O 
> always blocks. In fact this is a problem even if we only memory-map 
> files at the programmer's request.