try to reorganize modules per os

We should make better split os specify code for FreeBSD and Linux.
Idea comes from @liskin.

2 files changed, 78 insertions, 0 deletions

diff --git a/src/Xmobar/Plugins/Monitors/Mem/FreeBSD.hs b/src/Xmobar/Plugins/Monitors/Mem/FreeBSD.hs
new file mode 100644
index 0000000..787cace
--- /dev/null
+++ b/src/Xmobar/Plugins/Monitors/Mem/FreeBSD.hs
@@ -0,0 +1,45 @@
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Plugins.Monitors.Mem.FreeBSD
+-- 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.FreeBSD (parseMEM) where
+
+import System.BSD.Sysctl (sysctlReadUInt)
+
+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]
diff --git a/src/Xmobar/Plugins/Monitors/Mem/Linux.hs b/src/Xmobar/Plugins/Monitors/Mem/Linux.hs
new file mode 100644
index 0000000..9e48d22
--- /dev/null
+++ b/src/Xmobar/Plugins/Monitors/Mem/Linux.hs
@@ -0,0 +1,33 @@
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Plugins.Monitors.Mem.Linux
+-- 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.Linux (parseMEM) where
+
+import qualified Data.Map as M
+
+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]