[Question] Memory widget doesn't take shared memory into account

[xfzv]

Today I launched two virtual machines with respectively 4 and 6GB of allocated shared memory. I was a bit surprised to see the low RAM percentage usage in my awesome wibar after a while.

It seems that mem.lua doesn't take into account the Shmem value from /proc/meminfo, like other tools such as top or htop:

https://github.com/lcpz/lain/blob/88f5a8abd2649b348ffec433a24a263b37f122c0/widget/mem.lua#L38

On the other hand, Bottom does and gives me a more realistic RAM usage (huge difference actually, currently mem.lua reports 20% versus 35% with bottom).

I assume this is done on purpose, although it feels quite inaccurate to me.

Any chance this could change? or could someone suggest what modifications I should do to achieve that?

Thanks.

[xfzv]

Nevermind, I figured how to add shared memory. Source

    function mem.update()
        mem_now = {}
        for line in lines("/proc/meminfo") do
            for k, v in gmatch(line, "([%a]+):[%s]+([%d]+).+") do
                if k == "MemTotal" then
                    mem_now.total = floor(v / 1024 + 0.5)
                elseif k == "MemFree" then
                    mem_now.free = floor(v / 1024 + 0.5)
                elseif k == "Buffers" then
                    mem_now.buf = floor(v / 1024 + 0.5)
                elseif k == "Cached" then
                    mem_now.cache = floor(v / 1024 + 0.5)
                elseif k == "SwapTotal" then
                    mem_now.swap = floor(v / 1024 + 0.5)
                elseif k == "SwapFree" then
                    mem_now.swapf = floor(v / 1024 + 0.5)
+               elseif k == "Shmem" then
+                   mem_now.share = floor(v / 1024 + 0.5)
                elseif k == "SReclaimable" then
                    mem_now.srec = floor(v / 1024 + 0.5)
                end
            end
        end

- mem_now.used = mem_now.total - mem_now.free - mem_now.buf - mem_now.cache - mem_now.srec      
+ mem_now.used = mem_now.total + mem_now.share - mem_now.free - mem_now.buf - mem_now.cache - mem_now.srec