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----------------------------------------------------------
-- Licensed under the GNU General Public License version 2
-- * Copyright (C) 2009 Adrian C. <anrxc_sysphere_org>
-- * Derived from Wicked, copyright of Lucas de Vries
----------------------------------------------------------
-- {{{ Grab environment
local tonumber = tonumber
local io = { open = io.open }
local setmetatable = setmetatable
local math = { floor = math.floor }
-- }}}
-- Mem: provides RAM and Swap usage statistics
module("vicious.mem")
-- {{{ Memory widget type
local function worker(format)
-- Get meminfo
local f = io.open("/proc/meminfo")
for line in f:lines() do
if line:match("^MemTotal.*") then
mem_total = math.floor(tonumber(line:match("([%d]+)")) / 1024)
elseif line:match("^MemFree.*") then
free = math.floor(tonumber(line:match("([%d]+)")) / 1024)
elseif line:match("^Buffers.*") then
buffers = math.floor(tonumber(line:match("([%d]+)")) / 1024)
elseif line:match("^Cached.*") then
cached = math.floor(tonumber(line:match("([%d]+)")) / 1024)
-- Get swap stats while we're at it
elseif line:match("^SwapTotal.*") then
swap_total = math.floor(tonumber(line:match("([%d]+)")) / 1024)
elseif line:match("^SwapFree.*") then
swap_free = math.floor(tonumber(line:match("([%d]+)")) / 1024)
end
end
f:close()
-- Calculate percentage
mem_free = free + buffers + cached
mem_inuse = mem_total - mem_free
mem_usepercent = math.floor(mem_inuse/mem_total*100)
-- Calculate swap percentage
swap_inuse = swap_total - swap_free
swap_usepercent = math.floor(swap_inuse/swap_total*100)
return {mem_usepercent, mem_inuse, mem_total, mem_free,
swap_usepercent, swap_inuse, swap_total, swap_free}
end
-- }}}
setmetatable(_M, { __call = function(_, ...) return worker(...) end })
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