]> git.madduck.net Git - etc/awesome.git/blobdiff - widgets/cpu.lua

madduck's git repository

Every one of the projects in this repository is available at the canonical URL git://git.madduck.net/madduck/pub/<projectpath> — see each project's metadata for the exact URL.

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.

SSH access, as well as push access can be individually arranged.

If you use my repositories frequently, consider adding the following snippet to ~/.gitconfig and using the third clone URL listed for each project:

[url "git://git.madduck.net/madduck/"]
  insteadOf = madduck:

fix #298
[etc/awesome.git] / widgets / cpu.lua
index 7c1ecb032b3f613f30423fcb467219e7bc6bf9da..076b692c80279aac98b6035e8f5b74537d7f708d 100644 (file)
@@ -7,71 +7,76 @@
                                                   
 --]]
 
                                                   
 --]]
 
-local first_line   = require("lain.helpers").first_line
-local newtimer     = require("lain.helpers").newtimer
-
+local helpers      = require("lain.helpers")
 local wibox        = require("wibox")
 local wibox        = require("wibox")
-
 local math         = { ceil   = math.ceil }
 local string       = { format = string.format,
                        gmatch = string.gmatch }
 local tostring     = tostring
 local math         = { ceil   = math.ceil }
 local string       = { format = string.format,
                        gmatch = string.gmatch }
 local tostring     = tostring
-
 local setmetatable = setmetatable
 
 -- CPU usage
 -- lain.widgets.cpu
 local setmetatable = setmetatable
 
 -- CPU usage
 -- lain.widgets.cpu
-local cpu = {
-    last_total = 0,
-    last_active = 0
-}
+local cpu = { core = {} }
 
 local function worker(args)
     local args     = args or {}
 
 local function worker(args)
     local args     = args or {}
-    local timeout  = args.timeout or 5
+    local timeout  = args.timeout or 2
     local settings = args.settings or function() end
 
     local settings = args.settings or function() end
 
-    cpu.widget = wibox.widget.textbox('')
+    cpu.widget = wibox.widget.textbox()
 
 
-    function update()
+    function cpu.update()
         -- Read the amount of time the CPUs have spent performing
         -- different kinds of work. Read the first line of /proc/stat
         -- which is the sum of all CPUs.
         -- Read the amount of time the CPUs have spent performing
         -- different kinds of work. Read the first line of /proc/stat
         -- which is the sum of all CPUs.
-        local times = first_line("/proc/stat")
-        local at = 1
-        local idle = 0
-        local total = 0
-        for field in string.gmatch(times, "[%s]+([^%s]+)")
-        do
-            -- 4 = idle, 5 = ioWait. Essentially, the CPUs have done
-            -- nothing during these times.
-            if at == 4 or at == 5
-            then
-                idle = idle + field
+        local times = helpers.lines_match("cpu","/proc/stat")
+
+        for index,time in pairs(times) do
+            local coreid = index - 1
+            local core   = cpu.core[coreid] or
+                           { last_active = 0 , last_total = 0, usage = 0 }
+            local at     = 1
+            local idle   = 0
+            local total  = 0
+
+            for field in string.gmatch(time, "[%s]+([^%s]+)") do
+                -- 4 = idle, 5 = ioWait. Essentially, the CPUs have done
+                -- nothing during these times.
+                if at == 4 or at == 5 then
+                    idle = idle + field
+                end
+                total = total + field
+                at = at + 1
             end
             end
-            total = total + field
-            at = at + 1
-        end
-        local active = total - idle
 
 
-        -- Read current data and calculate relative values.
-        local dactive = active - cpu.last_active
-        local dtotal = total - cpu.last_total
+            local active = total - idle
+
+            if core.last_active ~= active or core.last_total ~= total then
+                -- Read current data and calculate relative values.
+                local dactive = active - core.last_active
+                local dtotal  = total - core.last_total
+                local usage   = math.ceil((dactive / dtotal) * 100)
 
 
-        cpu_now = {}
-        cpu_now.usage = tostring(math.ceil((dactive / dtotal) * 100))
+                core.last_active = active
+                core.last_total  = total
+                core.usage       = usage
 
 
+                -- Save current data for the next run.
+                cpu.core[coreid] = core
+            end
+        end
+
+        cpu_now = cpu.core
+        cpu_now.usage = cpu_now[0].usage
         widget = cpu.widget
         widget = cpu.widget
-        settings()
 
 
-        -- Save current data for the next run.
-        cpu.last_active = active
-        cpu.last_total = total
+        settings()
     end
 
     end
 
-    newtimer("cpu", timeout, update)
+    helpers.newtimer("cpu", timeout, cpu.update)
 
 
-    return cpu.widget
+    return cpu
 end
 
 return setmetatable(cpu, { __call = function(_, ...) return worker(...) end })
 end
 
 return setmetatable(cpu, { __call = function(_, ...) return worker(...) end })