\begin{code}
-{-# OPTIONS_GHC -XNoImplicitPrelude #-}
+{-# LANGUAGE CPP, NoImplicitPrelude #-}
{-# OPTIONS_GHC -fno-warn-missing-signatures #-}
{-# OPTIONS_HADDOCK not-home #-}
+
-----------------------------------------------------------------------------
-- |
-- Module : GHC.Conc
, registerDelay -- :: Int -> IO (TVar Bool)
, threadWaitRead -- :: Int -> IO ()
, threadWaitWrite -- :: Int -> IO ()
+ , closeFdWith -- :: (Fd -> IO ()) -> Fd -> IO ()
-- * TVars
, STM(..)