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Diffstat (limited to 'src/Plugins/Monitors/Cpu.hs')
-rw-r--r-- | src/Plugins/Monitors/Cpu.hs | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/Plugins/Monitors/Cpu.hs b/src/Plugins/Monitors/Cpu.hs new file mode 100644 index 0000000..ab89246 --- /dev/null +++ b/src/Plugins/Monitors/Cpu.hs @@ -0,0 +1,53 @@ +----------------------------------------------------------------------------- +-- | +-- Module : Plugins.Monitors.Cpu +-- Copyright : (c) Andrea Rossato +-- License : BSD-style (see LICENSE) +-- +-- Maintainer : Jose A. Ortega Ruiz <jao@gnu.org> +-- 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>%" + ["bar","total","user","nice","system","idle"] + +cpuData :: IO [Float] +cpuData = do s <- B.readFile "/proc/stat" + return $ cpuParser s + +cpuParser :: B.ByteString -> [Float] +cpuParser = + map (read . B.unpack) . tail . B.words . head . 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 $ repeat "" +formatCpu xs = do + let t = foldr (+) 0 $ take 3 xs + b <- showPercentBar (100 * t) t + ps <- showPercentsWithColors (t:xs) + return (b:ps) + +runCpu :: [String] -> Monitor String +runCpu _ = + do c <- io parseCPU + l <- formatCpu c + parseTemplate l |