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|
{-#LANGUAGE CPP #-}
-----------------------------------------------------------------------------
-- |
-- Module : Plugins.Monitors.Mem
-- Copyright : (c) Andrea Rossato
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Jose A. Ortega Ruiz <jao@gnu.org>
-- Stability : unstable
-- Portability : unportable
--
-- A memory monitor for Xmobar
--
-----------------------------------------------------------------------------
module Xmobar.Plugins.Monitors.Mem (memConfig, runMem, totalMem, usedMem) where
import Xmobar.Plugins.Monitors.Common
import System.Console.GetOpt
#ifdef FREEBSD
import System.BSD.Sysctl (sysctlReadUInt)
#else
import qualified Data.Map as M
#endif
data MemOpts = MemOpts
{ usedIconPattern :: Maybe IconPattern
, freeIconPattern :: Maybe IconPattern
, availableIconPattern :: Maybe IconPattern
}
defaultOpts :: MemOpts
defaultOpts = MemOpts
{ usedIconPattern = Nothing
, freeIconPattern = Nothing
, availableIconPattern = Nothing
}
options :: [OptDescr (MemOpts -> MemOpts)]
options =
[ Option "" ["used-icon-pattern"] (ReqArg (\x o ->
o { usedIconPattern = Just $ parseIconPattern x }) "") ""
, Option "" ["free-icon-pattern"] (ReqArg (\x o ->
o { freeIconPattern = Just $ parseIconPattern x }) "") ""
, Option "" ["available-icon-pattern"] (ReqArg (\x o ->
o { availableIconPattern = Just $ parseIconPattern x }) "") ""
]
memConfig :: IO MConfig
memConfig = mkMConfig
"Mem: <usedratio>% (<cache>M)" -- template
["usedbar", "usedvbar", "usedipat", "freebar", "freevbar", "freeipat",
"availablebar", "availablevbar", "availableipat",
"usedratio", "freeratio", "availableratio",
"total", "free", "buffer", "cache", "available", "used"] -- available replacements
#ifdef FREEBSD
parseMEM :: IO [Float]
parseMEM = do stats <- mapM sysctlReadUInt [
"vm.stats.vm.v_page_size"
, "vm.stats.vm.v_page_count"
, "vm.stats.vm.v_free_count"
, "vm.stats.vm.v_active_count"
, "vm.stats.vm.v_inactive_count"
, "vm.stats.vm.v_wire_count"
, "vm.stats.vm.v_cache_count"]
let [ pagesize, totalpages, freepages, activepages, inactivepages, wiredpages, cachedpages ] = fmap fromIntegral stats
usedpages = activepages + wiredpages + cachedpages
availablepages = inactivepages + cachedpages + freepages
bufferedpages = activepages + inactivepages + wiredpages
available = availablepages * pagesize
used = usedpages * pagesize
free = freepages * pagesize
cache = cachedpages * pagesize
buffer = bufferedpages * pagesize
total = totalpages * pagesize
usedratio = usedpages / totalpages
freeratio = freepages / totalpages
availableratio = availablepages / totalpages
return [usedratio, freeratio, availableratio, total, free, buffer, cache, available, used]
#else
fileMEM :: IO String
fileMEM = readFile "/proc/meminfo"
parseMEM :: IO [Float]
parseMEM =
do file <- fileMEM
let content = map words $ take 8 $ lines file
info = M.fromList $ map (\line -> (head line, (read $ line !! 1 :: Float) / 1024)) content
[total, free, buffer, cache] = map (info M.!) ["MemTotal:", "MemFree:", "Buffers:", "Cached:"]
available = M.findWithDefault (free + buffer + cache) "MemAvailable:" info
used = total - available
usedratio = used / total
freeratio = free / total
availableratio = available / total
return [usedratio, freeratio, availableratio, total, free, buffer, cache, available, used]
#endif
totalMem :: IO Float
totalMem = fmap ((*1024) . (!!1)) parseMEM
usedMem :: IO Float
usedMem = fmap ((*1024) . (!!6)) parseMEM
formatMem :: MemOpts -> [Float] -> Monitor [String]
formatMem opts (r:fr:ar:xs) =
do let f = showDigits 0
mon i x = [showPercentBar (100 * x) x, showVerticalBar (100 * x) x, showIconPattern i x]
sequence $ mon (usedIconPattern opts) r
++ mon (freeIconPattern opts) fr
++ mon (availableIconPattern opts) ar
++ map showPercentWithColors [r, fr, ar]
++ map (showWithColors f) xs
formatMem _ _ = replicate 10 `fmap` getConfigValue naString
runMem :: [String] -> Monitor String
runMem argv =
do m <- io parseMEM
opts <- io $ parseOptsWith options defaultOpts argv
l <- formatMem opts m
parseTemplate l
|
