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{-# LANGUAGE CPP #-}
import Data.Binary
import Data.Binary.Get
import Data.Binary.Put
import Test.Tasty.Bench
import qualified Data.ByteString.Lazy as BS
import qualified Data.Vector.Unboxed as U
import Data.Vector.Binary
#if !(MIN_VERSION_bytestring(0,10,0))
import Control.DeepSeq (NFData(..))
import qualified Data.ByteString.Lazy.Internal as BS
instance NFData BS.ByteString where
rnf BS.Empty = ()
rnf (BS.Chunk _ b) = rnf b
#endif
vec1,vec2,vec3,vec4,vec5 :: U.Vector Int
vec1 = U.enumFromN 0 3
vec2 = U.enumFromN 0 30
vec3 = U.enumFromN 0 300
vec4 = U.enumFromN 0 30000
vec5 = U.enumFromN 0 300000
bs1,bs2,bs3,bs4,bs5 :: BS.ByteString
bs1 = encodeVector vec1
bs2 = encodeVector vec2
bs3 = encodeVector vec3
bs4 = encodeVector vec4
bs5 = encodeVector vec5
naiveGet :: (Binary a, U.Unbox a) => Get (U.Vector a)
naiveGet = do
n <- get
U.replicateM n get
naiveGet' :: (Binary a, U.Unbox a) => Get (U.Vector a)
naiveGet' = do
n <- get
U.replicateM n get
-- A feeble attempt at simulating what will happen if we end up with a situation
-- where we are unable to specialize to the element type
{-# NOINLINE naiveGet' #-}
type V = BS.ByteString -> U.Vector Int
encodeVector :: U.Vector Int -> BS.ByteString
encodeVector = runPut . genericPutVector
benchGetSize :: String -> BS.ByteString -> Benchmark
benchGetSize name bs = bgroup name
[ bench "U.Vector Int" $ nf (runGet genericGetVector :: V) bs
, bench "naive U.Vector Int" $ nf (runGet naiveGet :: V) bs
, bench "noinline naive U.Vector Int" $ nf (runGet naiveGet' :: V) bs
]
main = defaultMain
[ bgroup "encode"
[ bench "U.Vector Int 3" $ nf encodeVector vec1
, bench "U.Vector Int 30" $ nf encodeVector vec2
, bench "U.Vector Int 300" $ nf encodeVector vec3
, bench "U.Vector Int 30000" $ nf encodeVector vec4
, bench "U.Vector Int 300000" $ nf encodeVector vec5
]
, bgroup "decode"
[ benchGetSize "size=3" bs1
, benchGetSize "size=30" bs2
, benchGetSize "size=300" bs3
, benchGetSize "size=30000" bs4
, benchGetSize "size=300000" bs5
]
]
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