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|
-----------------------------------------------------------------------------
-- |
-- Module : Plugins.Monitors.Cpu
-- Copyright : (c) Andrea Rossato
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Andrea Rossato <andrea.rossato@unibz.it>
-- Stability : unstable
-- Portability : unportable
--
-- A cpu monitor for Xmobar
--
-----------------------------------------------------------------------------
module Plugins.Monitors.Cpu where
import Plugins.Monitors.Common
import qualified Data.ByteString.Lazy.Char8 as B
cpuConfig :: IO MConfig
cpuConfig = mkMConfig
"Cpu: <total>" -- template
["total","user","nice","system","idle"] -- available replacements
cpuData :: IO [Float]
cpuData = do s <- B.readFile "/proc/stat"
return $ cpuParser s
cpuParser :: B.ByteString -> [Float]
cpuParser =
map read . map B.unpack . tail . B.words . flip (!!) 0 . B.lines
parseCPU :: IO [Float]
parseCPU =
do (a,b) <- doActionTwiceWithDelay 750000 cpuData
let dif = zipWith (-) b a
tot = foldr (+) 0 dif
percent = map (/ tot) dif
return percent
formatCpu :: [Float] -> Monitor [String]
formatCpu [] = return [""]
formatCpu x =
do let f s = floatToPercent (s / 100)
t = foldr (+) 0 $ take 3 x
list = t:x
mapM (showWithColors f) . map (* 100) $ list
runCpu :: [String] -> Monitor String
runCpu _ =
do c <- io $ parseCPU
l <- formatCpu c
parseTemplate l
|
