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---------------------------------------------------
-- Licensed under the GNU General Public License v2
-- * (c) 2010, Adrian C. <anrxc@sysphere.org>
-- * (c) 2009, Lucas de Vries <lucas@glacicle.com>
---------------------------------------------------
-- {{{ Grab environment
local io = { lines = io.lines }
local setmetatable = setmetatable
local math = { floor = math.floor }
local string = { gmatch = string.gmatch }
-- }}}
-- Mem: provides RAM and Swap usage statistics
-- vicious.widgets.mem
local mem = {}
-- {{{ Memory widget type
local function worker(format)
local _mem = { buf = {}, swp = {} }
-- Get MEM info
for line in io.lines("/proc/meminfo") do
for k, v in string.gmatch(line, "([%a]+):[%s]+([%d]+).+") do
if k == "MemTotal" then _mem.total = math.floor(v/1024)
elseif k == "MemFree" then _mem.buf.f = math.floor(v/1024)
elseif k == "Buffers" then _mem.buf.b = math.floor(v/1024)
elseif k == "Cached" then _mem.buf.c = math.floor(v/1024)
elseif k == "SwapTotal" then _mem.swp.t = math.floor(v/1024)
elseif k == "SwapFree" then _mem.swp.f = math.floor(v/1024)
end
end
end
-- Calculate memory percentage
_mem.free = _mem.buf.f + _mem.buf.b + _mem.buf.c
_mem.inuse = _mem.total - _mem.free
_mem.bcuse = _mem.total - _mem.buf.f
_mem.usep = math.floor(_mem.inuse / _mem.total * 100)
-- Calculate swap percentage
_mem.swp.inuse = _mem.swp.t - _mem.swp.f
_mem.swp.usep = math.floor(_mem.swp.inuse / _mem.swp.t * 100)
return {_mem.usep, _mem.inuse, _mem.total, _mem.free,
_mem.swp.usep, _mem.swp.inuse, _mem.swp.t, _mem.swp.f,
_mem.bcuse }
end
-- }}}
return setmetatable(mem, { __call = function(_, ...) return worker(...) end })
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