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author | Adrian C. (anrxc) <anrxc@sysphere.org> | 2010-03-14 01:55:33 +0100 |
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committer | Adrian C. (anrxc) <anrxc@sysphere.org> | 2010-03-14 01:55:33 +0100 |
commit | 237470c8f45190b213e3a173ce6ae1a74b3e11fe (patch) | |
tree | 7f53c8144761947d4bde20715bcad34f4be0d6c0 /widgets/cpu.lua | |
parent | 9a82d4113a8271b7dfc7506f2b07379e3ede89a8 (diff) | |
download | vicious-legacy-237470c8f45190b213e3a173ce6ae1a74b3e11fe.tar.xz |
API: transform widgets namespace table to a directory
Diffstat (limited to 'widgets/cpu.lua')
-rw-r--r-- | widgets/cpu.lua | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/widgets/cpu.lua b/widgets/cpu.lua new file mode 100644 index 0000000..3dfc22f --- /dev/null +++ b/widgets/cpu.lua @@ -0,0 +1,78 @@ +--------------------------------------------------- +-- 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 ipairs = ipairs +local io = { lines = io.lines } +local setmetatable = setmetatable +local math = { floor = math.floor } +local table = { insert = table.insert } +local string = { + find = string.find, + gmatch = string.gmatch +} +-- }}} + + +-- Cpu: provides CPU usage for all available CPUs/cores +module("vicious.widgets.cpu") + + +-- Initialise function tables +local cpu_usage = {} +local cpu_total = {} +local cpu_active = {} + +-- {{{ CPU widget type +local function worker(format) + local cpu_lines = {} + + -- Get CPU stats + for line in io.lines("/proc/stat") do + if string.find(line, "^cpu") then + cpu_lines[#cpu_lines+1] = {} + + for i in string.gmatch(line, "[%s]+([%d]+)") do + table.insert(cpu_lines[#cpu_lines], i) + end + end + end + + -- Ensure tables are initialized correctly + while #cpu_total < #cpu_lines do + table.insert(cpu_total, 0) + table.insert(cpu_active, 0) + table.insert(cpu_usage, 0) + end + + local total_new = {} + local active_new = {} + local diff_total = {} + local diff_active = {} + + for i, v in ipairs(cpu_lines) do + -- Calculate totals + total_new[i] = 0 + for j = 1, #v do + total_new[i] = total_new[i] + v[j] + end + active_new[i] = v[1] + v[2] + v[3] + + -- Calculate percentage + diff_total[i] = total_new[i] - cpu_total[i] + diff_active[i] = active_new[i] - cpu_active[i] + cpu_usage[i] = math.floor(diff_active[i] / diff_total[i] * 100) + + -- Store totals + cpu_total[i] = total_new[i] + cpu_active[i] = active_new[i] + end + + return cpu_usage +end +-- }}} + +setmetatable(_M, { __call = function(_, ...) return worker(...) end }) |