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[etc/awesome.git] / widgets / mem.lua
1
2 --[[
3                                                   
4      Licensed under GNU General Public License v2 
5       * (c) 2013,      Luke Bonham                
6       * (c) 2010-2012, Peter Hofmann              
7                                                   
8 --]]
9
10 local newtimer     = require("lain.helpers").newtimer
11
12 local wibox        = require("wibox")
13
14 local io           = { lines  = io.lines }
15 local math         = { floor  = math.floor }
16 local string       = { gmatch = string.gmatch }
17
18 local setmetatable = setmetatable
19
20 -- Memory usage (ignoring caches)
21 -- lain.widgets.mem
22 local mem = {}
23
24 local function worker(args)
25     local args     = args or {}
26     local timeout  = args.timeout or 2
27     local settings = args.settings or function() end
28
29     mem.widget = wibox.widget.textbox('')
30
31     function update()
32         mem_now = {}
33         for line in io.lines("/proc/meminfo")
34         do
35             for k, v in string.gmatch(line, "([%a]+):[%s]+([%d]+).+")
36             do
37                 if     k == "MemTotal"  then mem_now.total = math.floor(v / 1024)
38                 elseif k == "MemFree"   then mem_now.free  = math.floor(v / 1024)
39                 elseif k == "Buffers"   then mem_now.buf   = math.floor(v / 1024)
40                 elseif k == "Cached"    then mem_now.cache = math.floor(v / 1024)
41                 elseif k == "SwapTotal" then mem_now.swap  = math.floor(v / 1024)
42                 elseif k == "SwapFree"  then mem_now.swapf = math.floor(v / 1024)
43                 end
44             end
45         end
46
47         mem_now.used = mem_now.total - (mem_now.free + mem_now.buf + mem_now.cache)
48         mem_now.swapused = mem_now.swap - mem_now.swapf
49         mem_now.perc = math.floor(mem_now.used / mem_now.total * 100)
50
51         widget = mem.widget
52         settings()
53     end
54
55     newtimer("mem", timeout, update)
56
57     return mem.widget
58 end
59
60 return setmetatable(mem, { __call = function(_, ...) return worker(...) end })