All patches and comments are welcome. Please squash your changes to logical
commits before using git-format-patch and git-send-email to
patches@git.madduck.net.
If you'd read over the Git project's submission guidelines and adhered to them,
I'd be especially grateful.
3 Licensed under GNU General Public License v2
5 * (c) 2010-2012, Peter Hofmann
9 local helpers = require("lain.helpers")
10 local wibox = require("wibox")
13 local tostring = tostring
18 local function factory(args)
19 local cpu = { core = {}, widget = wibox.widget.textbox() }
20 local args = args or {}
21 local timeout = args.timeout or 2
22 local settings = args.settings or function() end
25 -- Read the amount of time the CPUs have spent performing
26 -- different kinds of work. Read the first line of /proc/stat
27 -- which is the sum of all CPUs.
28 for index,time in pairs(helpers.lines_match("cpu","/proc/stat")) do
29 local coreid = index - 1
30 local core = cpu.core[coreid] or
31 { last_active = 0 , last_total = 0, usage = 0 }
36 for field in string.gmatch(time, "[%s]+([^%s]+)") do
37 -- 4 = idle, 5 = ioWait. Essentially, the CPUs have done
38 -- nothing during these times.
39 if at == 4 or at == 5 then
46 local active = total - idle
48 if core.last_active ~= active or core.last_total ~= total then
49 -- Read current data and calculate relative values.
50 local dactive = active - core.last_active
51 local dtotal = total - core.last_total
52 local usage = math.ceil((dactive / dtotal) * 100)
54 core.last_active = active
55 core.last_total = total
58 -- Save current data for the next run.
59 cpu.core[coreid] = core
64 cpu_now.usage = cpu_now[0].usage
70 helpers.newtimer("cpu", timeout, cpu.update)