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{-# LANGUAGE ViewPatterns, TupleSections, RecordWildCards #-}
import Data.Char
import System.Directory
import System.FilePath
import Text.Printf
import Control.Monad
import Options.Applicative
import Data.Map (Map,(!))
import qualified Data.Map as Map
-- HINT: lambdacube-compiler-test-suite --overall-time performance +RTS -tcurrent.log --machine-readable
-- output: current.log overall-time.txt
data Config
= Config
{ resultPath :: String
, output :: Maybe String
}
sample :: Parser Config
sample = Config
<$> pure "performance"
<*> optional (strOption (long "output" <> short 'o' <> metavar "FILENAME" <> help "output file name"))
main :: IO ()
main = comparePerf =<< execParser opts
where
opts = info (helper <*> sample)
( fullDesc
<> progDesc "compares LambdaCube 3D compiper performance"
<> header ("LambdaCube 3D compiler performance report"))
comparePerf :: Config -> IO ()
comparePerf cfg@Config{..} = do
-- read current result
overallTime <- read <$> readFile "overall-time.txt" :: IO Double
let toDouble = read :: String -> Double
toInteger = read :: String -> Integer
new <- Map.fromList . (:) ("overall_time",show overallTime) . read . unlines . tail . lines <$> readFile "current.log" :: IO (Map String String)
let totalAlloc a = toInteger $ a ! "bytes allocated"
peakAlloc a = toInteger $ a ! "peak_megabytes_allocated"
totalAllocF a = toDouble $ a ! "bytes allocated"
peakAllocF a = toDouble $ a ! "peak_megabytes_allocated"
overallTime a = toDouble $ a ! "overall_time"
putStrLn $ printf "%-20s time: % 6.3fs \tpeak mem: % 6d MBytes total alloc: %d bytes" "CURRENT" (overallTime new) (peakAlloc new) (totalAlloc new)
-- read previous results
perfs <- filter ((".perf" ==) . takeExtension) <$> getDirectoryContents "performance" >>= mapM (\n -> (n,) . read <$> readFile (resultPath </> n)) :: IO [(String,Map String String)]
forM_ perfs $ \(name,old) -> do
putStrLn $ printf "%-20s time: %+6.3f%% \tpeak mem: %+6.3f%% \ttotal alloc: %+6.3f%%"
name (100*(overallTime new / overallTime old - 1)) (100*(peakAllocF new / peakAllocF old - 1)) (100*(totalAllocF new / totalAllocF old - 1))
case output of
Nothing -> return ()
Just n -> writeFile (resultPath </> n ++ ".perf") $ show new
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