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|
-----------------------------------------------------------------------------
-- |
-- Module : Plugins.Monitors.Mem
-- Copyright : (c) Andrea Rossato
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Andrea Rossato <andrea.rossato@unibz.it>
-- Stability : unstable
-- Portability : unportable
--
-- A memory monitor for Xmobar
--
-----------------------------------------------------------------------------
module Plugins.Monitors.Mem (memConfig, runMem, totalMem, usedMem) where
import Plugins.Monitors.Common
memConfig :: IO MConfig
memConfig = mkMConfig
"Mem: <usedratio>% (<cache>M)" -- template
["usedbar", "freebar", "usedratio", "total", -- available replacements
"free", "buffer", "cache", "rest", "used"]
fileMEM :: IO String
fileMEM = readFile "/proc/meminfo"
parseMEM :: IO [Float]
parseMEM =
do file <- fileMEM
let content = map words $ take 4 $ lines file
[total, free, buffer, cache] = map (\line -> (read $ line !! 1 :: Float) / 1024) content
rest = free + buffer + cache
used = total - rest
usedratio = used / total
return [usedratio, total, free, buffer, cache, rest, used]
totalMem :: IO Float
totalMem = fmap ((*1024) . (!!1)) parseMEM
usedMem :: IO Float
usedMem = fmap ((*1024) . (!!6)) parseMEM
formatMem :: [Float] -> Monitor [String]
formatMem (r:xs) =
do let f = showDigits 0
rr = 100 * r
ub <- showPercentBar rr r
fb <- showPercentBar (100 - rr) (1 - r)
s <- mapM (showWithColors f) (rr:xs)
return (ub:fb:s)
formatMem _ = return $ replicate 9 "N/A"
runMem :: [String] -> Monitor String
runMem _ =
do m <- io parseMEM
l <- formatMem m
parseTemplate l
|
