add Data.Function

[haskell-directory.git] / GHC / ConsoleHandler.hs

diff --git a/GHC/ConsoleHandler.hs b/GHC/ConsoleHandler.hs
index 77ea7b4..1654163 100644 (file)
--- a/GHC/ConsoleHandler.hs
+++ b/GHC/ConsoleHandler.hs
@@ -2,25 +2,28 @@
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  GHC.ConsoleHandler
--- Copyright   :  whatevah
+-- Copyright   :  (c) The University of Glasgow
 -- License     :  see libraries/base/LICENSE
 -- 
 -- Maintainer  :  cvs-ghc@haskell.org
 -- Stability   :  internal
 -- Portability :  non-portable (GHC extensions)
 --
+-- NB. the contents of this module are only available on Windows.
+--
 -- Installing Win32 console handlers.
 -- 
 -----------------------------------------------------------------------------
 
 module GHC.ConsoleHandler
-#ifndef mingw32_HOST_OS
+#if !defined(mingw32_HOST_OS) && !defined(__HADDOCK__)
        where
 import Prelude -- necessary to get dependencies right
 #else /* whole file */
        ( Handler(..)
        , installHandler
        , ConsoleEvent(..)
+       , flushConsole
        ) where
 
 {-
@@ -31,6 +34,8 @@ import Prelude -- necessary to get dependencies right
 
 import Foreign
 import Foreign.C
+import GHC.IOBase
+import GHC.Handle
 
 data Handler
  = Default
@@ -93,4 +98,14 @@ foreign import ccall unsafe "RtsExternal.h rts_InstallConsoleEvent"
   rts_installHandler :: CInt -> Ptr (StablePtr (CInt -> IO ())) -> IO CInt
 foreign import ccall unsafe "RtsExternal.h rts_ConsoleHandlerDone"
   rts_ConsoleHandlerDone :: CInt -> IO ()
+
+
+flushConsole :: Handle -> IO ()
+flushConsole h = 
+  wantReadableHandle "flushConsole" h $ \ h_ -> 
+     throwErrnoIfMinus1Retry_ "flushConsole"
+      (flush_console_fd (fromIntegral (haFD h_)))
+
+foreign import ccall unsafe "consUtils.h flush_input_console__"
+       flush_console_fd :: CInt -> IO CInt
 #endif /* mingw32_HOST_OS */