[Haskell-cafe] What does the withProcessHandle_ function do?

[John Ky]

I want to learn how to use FFI with Win32, so I'm looking through the GHC
source code.  I encountered the function

terminateProcess :: ProcessHandle -> IO ()
terminateProcess ph = do
 withProcessHandle_ ph $ \p_ ->
   case p_ of
     ClosedHandle _ -> return p_
     OpenHandle h -> do
   throwErrnoIfMinus1_ "terminateProcess" $ c_terminateProcess h
   return p_

which uses withProcessHandle_.  What does it do?

Thanks

-John

_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe