    -- | This module provides scalable event notification for file
    -- descriptors and timeouts.
    --
    -- This module should be considered GHC internal.
    module System.Event
        ( -- * Types
          EventManager

          -- * Creation
        , new

          -- * Running
        , loop

        -- ** Stepwise running
        , step
        , shutdown

          -- * Registering interest in I/O events
        , Event
        , evtRead
        , evtWrite
        , IOCallback
        , FdKey(keyFd)
        , registerFd
        , registerFd_
        , unregisterFd
        , unregisterFd_
        , closeFd

          -- * Registering interest in timeout events
        , TimeoutCallback
        , TimeoutKey
        , registerTimeout
        , updateTimeout
        , unregisterTimeout
        ) where

    import System.Event.Manager