, registerDelay -- :: Int -> IO (TVar Bool)
, threadWaitRead -- :: Int -> IO ()
, threadWaitWrite -- :: Int -> IO ()
+ , closeFdWith -- :: (Fd -> IO ()) -> Fd -> IO ()
-- * TVars
, STM(..)
, atomically -- :: STM a -> IO a
, retry -- :: STM a
, orElse -- :: STM a -> STM a -> STM a
+ , throwSTM -- :: Exception e => e -> STM a
, catchSTM -- :: Exception e => STM a -> (e -> STM a) -> STM a
, alwaysSucceeds -- :: STM a -> STM ()
, always -- :: STM Bool -> STM ()