57 lines
2.0 KiB
Lua
57 lines
2.0 KiB
Lua
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-- Licensed under the GNU General Public License v2
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-- * (c) 2009, Adrian C. <anrxc.sysphere.org>
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-- * (c) Wicked, Lucas de Vries
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---------------------------------------------------
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-- {{{ Grab environment
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local io = { open = io.open }
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local setmetatable = setmetatable
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local math = { floor = math.floor }
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local string = { match = string.match }
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-- }}}
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-- Mem: provides RAM and Swap usage statistics
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module("vicious.mem")
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-- {{{ Memory widget type
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local function worker(format)
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-- Get meminfo
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local f = io.open("/proc/meminfo")
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local mem = { buf = {}, swp = {}, }
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for line in f:lines() do
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if string.match(line, "^MemTotal.*") then
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mem.total = math.floor(string.match(line, "([%d]+)")/1024)
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elseif string.match(line, "^MemFree.*") then
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mem.buf.f = math.floor(string.match(line, "([%d]+)")/1024)
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elseif string.match(line, "^Buffers.*") then
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mem.buf.b = math.floor(string.match(line, "([%d]+)")/1024)
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elseif string.match(line, "^Cached.*") then
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mem.buf.c = math.floor(string.match(line, "([%d]+)")/1024)
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-- Get swap stats while we are at it
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elseif string.match(line, "^SwapTotal.*") then
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mem.swp.total = math.floor(string.match(line, "([%d]+)")/1024)
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elseif string.match(line, "^SwapFree.*") then
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mem.swp.free = math.floor(string.match(line, "([%d]+)")/1024)
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end
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end
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f:close()
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-- Calculate percentage
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mem.free = mem.buf.f + mem.buf.b + mem.buf.c
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mem.inuse = mem.total - mem.free
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mem.usep = math.floor(mem.inuse / mem.total * 100)
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-- Calculate swap percentage
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mem.swp.inuse = mem.swp.total - mem.swp.free
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mem.swp.usep = math.floor(mem.swp.inuse / mem.swp.total * 100)
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return {mem.usep, mem.inuse, mem.total, mem.free,
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mem.swp.usep, mem.swp.inuse, mem.swp.total, mem.swp.free}
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end
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-- }}}
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setmetatable(_M, { __call = function(_, ...) return worker(...) end })
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