Hi Don,

 

     Sorry ..I  wasn't clear enough.I am trying to determine from the Haskell FFI doc what datatype to use in order to model C's "void *", e.g. for mmap http://www.opengroup.org/onlinepubs/000095399/functions/mmap.html

 

Regards, Vasili

     

 

On 1/16/08, Don Stewart <dons@galois.com> wrote:

vigalchin:
>    Hello,
>
>           In the ghc libraries directory I can't find the Haskell
>    .hs/.lhsthat implements Posix select. ?? I found Select.c.

In Control.Concurrent

   forkIO
   threadDelay
   threadWaitRead
   threadWaitWrite

The thread primitives are implemented in terms of select, and give you a
cleaner interface.

Also, with Control.Concurrent.STM.

   atomically
   orElse
   retry

You can have threads wait on one of a series of alternative events.
Using STM, you'll be able to compose blocks of such code, which you
can't do with select.

-- Don