src/Ganeti/Compat.hs

{-# LANGUAGE CPP #-}

{- | Compatibility helper module.

This module holds definitions that help with supporting multiple
library versions or transitions between versions.

-}

{-

Copyright (C) 2011, 2012 Google Inc.
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
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2. Redistributions in binary form must reproduce the above copyright
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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-}

module Ganeti.Compat
  ( rwhnf
  , Control.Parallel.Strategies.parMap
  ) where

import qualified Control.Parallel.Strategies

-- | Wrapper over the function exported from
-- "Control.Parallel.Strategies".
--
-- This wraps either the old or the new name of the function,
-- depending on the detected library version.
rwhnf :: Control.Parallel.Strategies.Strategy a
#ifdef PARALLEL3
rwhnf = Control.Parallel.Strategies.rseq
#else
rwhnf = Control.Parallel.Strategies.rwhnf
#endif