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|
-----------------------------------------------------------------------------
-- |
-- Module : Plugins.Monitors.CpuFreq
-- Copyright : (c) Juraj Hercek
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Juraj Hercek <juhe_haskell@hck.sk>
-- Stability : unstable
-- Portability : unportable
--
-- A cpu frequency monitor for Xmobar
--
-----------------------------------------------------------------------------
module Plugins.Monitors.CpuFreq where
import Plugins.Monitors.Common
import Plugins.Monitors.CoreCommon
-- |
-- Cpu frequency default configuration. Default template contains only one
-- core frequency, user should specify custom template in order to get more
-- cpu frequencies.
cpuFreqConfig :: IO MConfig
cpuFreqConfig = mkMConfig
"Freq: <cpu0>" -- template
(zipWith (++) (repeat "cpu") (map show [0 :: Int ..])) -- available
-- replacements
-- |
-- Function retrieves monitor string holding the cpu frequency (or
-- frequencies)
runCpuFreq :: [String] -> Monitor String
runCpuFreq _ = do
let dir = "/sys/devices/system/cpu"
file = "cpufreq/scaling_cur_freq"
pattern = "cpu"
divisor = 1e6 :: Double
failureMessage = "CpuFreq: N/A"
fmt x | x < 1 = show (round (x * 1000) :: Integer) ++ "MHz"
| otherwise = showDigits 1 x ++ "GHz"
checkedDataRetrieval failureMessage dir file pattern (/divisor) fmt
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