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50fff3bb7d62f78cd4bbfd6c5cd84987223d1786
[etc/awesome.git] / widget / 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 helpers              = require("lain.helpers")
11 local wibox                = require("wibox")
12 local gmatch, lines, floor = string.gmatch, io.lines, math.floor
13
14 -- Memory usage (ignoring caches)
15 -- lain.widget.mem
16
17 local function factory(args)
18     local mem      = { widget = wibox.widget.textbox() }
19     local args     = args or {}
20     local timeout  = args.timeout or 2
21     local settings = args.settings or function() end
22
23     function mem.update()
24         mem_now = {}
25         for line in lines("/proc/meminfo") do
26             for k, v in gmatch(line, "([%a]+):[%s]+([%d]+).+") do
27                 if     k == "MemTotal"     then mem_now.total = floor(v / 1024 + 0.5)
28                 elseif k == "MemFree"      then mem_now.free  = floor(v / 1024 + 0.5)
29                 elseif k == "Buffers"      then mem_now.buf   = floor(v / 1024 + 0.5)
30                 elseif k == "Cached"       then mem_now.cache = floor(v / 1024 + 0.5)
31                 elseif k == "SwapTotal"    then mem_now.swap  = floor(v / 1024 + 0.5)
32                 elseif k == "SwapFree"     then mem_now.swapf = floor(v / 1024 + 0.5)
33                 elseif k == "SReclaimable" then mem_now.srec  = floor(v / 1024 + 0.5)
34                 end
35             end
36         end
37
38         mem_now.used = mem_now.total - mem_now.free - mem_now.buf - mem_now.cache - mem_now.srec
39         mem_now.swapused = mem_now.swap - mem_now.swapf
40         mem_now.perc = math.floor(mem_now.used / mem_now.total * 100)
41
42         widget = mem.widget
43         settings()
44     end
45
46     helpers.newtimer("mem", timeout, mem.update)
47
48     return mem
49 end
50
51 return factory