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{-# LANGUAGE CPP, ExistentialQuantification #-}
#if defined(__GLASGOW_HASKELL__) && !defined(__HADDOCK__)
#include "MachDeps.h"
#endif
module Main (main) where
#if ! MIN_VERSION_base(4,8,0)
import Data.Monoid (Monoid(mappend, mempty))
#endif
import Control.DeepSeq
import Control.Exception (evaluate)
import Criterion.Main
import qualified Data.ByteString as S
import qualified Data.ByteString.Char8 as C
import qualified Data.ByteString.Lazy as L
import Data.Char (ord)
import Data.Word (Word8)
import Data.Binary.Builder
main :: IO ()
main = do
evaluate $ rnf
[ rnf word8s
, rnf smallByteString
, rnf largeByteString
]
defaultMain
[ -- Test GHC loop optimization of continuation based code.
bench "[Word8]" $ whnf (run . fromWord8s) word8s
-- Test bounds check merging
, bench "bounds/[Word8]" $ whnf (run . from4Word8s) word8s
, bench "small ByteString" $ whnf (run . fromByteString) smallByteString
, bench "large ByteString" $ whnf (run . fromByteString) largeByteString
, bench "length-prefixed ByteString" $ whnf (run . lengthPrefixedBS)
smallByteString
, bgroup "Host endian"
[ bench "1MB of Word8 in chunks of 16" $ whnf (run . putWord8N16) n
, bench "1MB of Word16 in chunks of 16" $ whnf (run . putWord16N16Host)
(n `div` 2)
, bench "1MB of Word32 in chunks of 16" $ whnf (run . putWord32N16Host)
(n `div` 4)
, bench "1MB of Word64 in chunks of 16" $ whnf (run . putWord64N16Host)
(n `div` 8)
]
]
where
run = L.length . toLazyByteString
n = 1 * (2 ^ (20 :: Int)) -- one MB
-- Input data
word8s :: [Word8]
word8s = replicate 10000 $ fromIntegral $ ord 'a'
{-# NOINLINE word8s #-}
smallByteString :: S.ByteString
smallByteString = C.pack "abcdefghi"
largeByteString :: S.ByteString
largeByteString = S.pack word8s
------------------------------------------------------------------------
-- Benchmarks
fromWord8s :: [Word8] -> Builder
fromWord8s [] = mempty
fromWord8s (x:xs) = singleton x <> fromWord8s xs
from4Word8s :: [Word8] -> Builder
from4Word8s [] = mempty
from4Word8s (x:xs) = singleton x <> singleton x <> singleton x <> singleton x <>
from4Word8s xs
-- Write 100 short, length-prefixed ByteStrings.
lengthPrefixedBS :: S.ByteString -> Builder
lengthPrefixedBS bs = loop (100 :: Int)
where loop n | n `seq` False = undefined
loop 0 = mempty
loop n =
#if WORD_SIZE_IN_BITS == 32
putWord32be (fromIntegral $ S.length bs) <>
#elif WORD_SIZE_IN_BITS == 64
putWord64be (fromIntegral $ S.length bs) <>
#else
# error Unsupported platform
#endif
fromByteString bs <>
loop (n-1)
putWord8N16 :: Int -> Builder
putWord8N16 = loop 0
where loop s n | s `seq` n `seq` False = undefined
loop _ 0 = mempty
loop s n =
singleton (s+0) <>
singleton (s+1) <>
singleton (s+2) <>
singleton (s+3) <>
singleton (s+4) <>
singleton (s+5) <>
singleton (s+6) <>
singleton (s+7) <>
singleton (s+8) <>
singleton (s+9) <>
singleton (s+10) <>
singleton (s+11) <>
singleton (s+12) <>
singleton (s+13) <>
singleton (s+14) <>
singleton (s+15) <>
loop (s+16) (n-16)
putWord16N16Host :: Int -> Builder
putWord16N16Host = loop 0
where loop s n | s `seq` n `seq` False = undefined
loop _ 0 = mempty
loop s n =
putWord16host (s+0) <>
putWord16host (s+1) <>
putWord16host (s+2) <>
putWord16host (s+3) <>
putWord16host (s+4) <>
putWord16host (s+5) <>
putWord16host (s+6) <>
putWord16host (s+7) <>
putWord16host (s+8) <>
putWord16host (s+9) <>
putWord16host (s+10) <>
putWord16host (s+11) <>
putWord16host (s+12) <>
putWord16host (s+13) <>
putWord16host (s+14) <>
putWord16host (s+15) <>
loop (s+16) (n-16)
putWord32N16Host :: Int -> Builder
putWord32N16Host = loop 0
where loop s n | s `seq` n `seq` False = undefined
loop _ 0 = mempty
loop s n =
putWord32host (s+0) <>
putWord32host (s+1) <>
putWord32host (s+2) <>
putWord32host (s+3) <>
putWord32host (s+4) <>
putWord32host (s+5) <>
putWord32host (s+6) <>
putWord32host (s+7) <>
putWord32host (s+8) <>
putWord32host (s+9) <>
putWord32host (s+10) <>
putWord32host (s+11) <>
putWord32host (s+12) <>
putWord32host (s+13) <>
putWord32host (s+14) <>
putWord32host (s+15) <>
loop (s+16) (n-16)
putWord64N16Host :: Int -> Builder
putWord64N16Host = loop 0
where loop s n | s `seq` n `seq` False = undefined
loop _ 0 = mempty
loop s n =
putWord64host (s+0) <>
putWord64host (s+1) <>
putWord64host (s+2) <>
putWord64host (s+3) <>
putWord64host (s+4) <>
putWord64host (s+5) <>
putWord64host (s+6) <>
putWord64host (s+7) <>
putWord64host (s+8) <>
putWord64host (s+9) <>
putWord64host (s+10) <>
putWord64host (s+11) <>
putWord64host (s+12) <>
putWord64host (s+13) <>
putWord64host (s+14) <>
putWord64host (s+15) <>
loop (s+16) (n-16)
------------------------------------------------------------------------
-- Utilities
#if !MIN_VERSION_base(4,11,0)
infixr 6 <>
(<>) :: Monoid m => m -> m -> m
(<>) = mappend
#endif
|
