83 lines
2.3 KiB
Lua
83 lines
2.3 KiB
Lua
-- Read the tiny kernel meminfo pseudo-file every five seconds. This avoids a
|
|
-- resident helper process and reuses Noctalia's lightweight widget lifecycle.
|
|
local command = [[awk '
|
|
$1 == "MemTotal:" { total = $2 }
|
|
$1 == "MemAvailable:" { available = $2 }
|
|
$1 == "SwapTotal:" { swap_total = $2 }
|
|
$1 == "SwapFree:" { swap_free = $2 }
|
|
END {
|
|
if (!total || !available) exit 1
|
|
used = total - available
|
|
memory_used = used * 100 / total
|
|
if (swap_total > 0) {
|
|
swap_used = (swap_total - swap_free) * 100 / swap_total
|
|
printf "%.1f/%.1f GiB S %.0f%%\t%.0f\t%.0f\n", used / 1048576, total / 1048576, swap_used, memory_used, swap_used
|
|
} else {
|
|
printf "%.1f/%.1f GiB S —\t%.0f\t0\n", used / 1048576, total / 1048576, memory_used
|
|
}
|
|
}' /proc/meminfo]]
|
|
|
|
local request_in_flight = false
|
|
|
|
local function colorForUsage(percent)
|
|
if percent >= 85 then
|
|
return "#ff453a" -- red
|
|
end
|
|
if percent >= 70 then
|
|
return "#ff8800" -- orange
|
|
end
|
|
if percent >= 50 then
|
|
return "#ffd60a" -- yellow
|
|
end
|
|
return "#ffffff" -- white
|
|
end
|
|
|
|
local function renderStatus(text, color)
|
|
barWidget.render(ui.row({ gap = 4, align = "center" }, {
|
|
ui.glyph({ name = "memory", size = 14, color = color }),
|
|
ui.label({ text = text, color = color }),
|
|
}))
|
|
end
|
|
|
|
function update()
|
|
noctalia.setUpdateInterval(5000)
|
|
|
|
if request_in_flight then
|
|
return
|
|
end
|
|
|
|
request_in_flight = true
|
|
noctalia.runAsync(command, function(result)
|
|
request_in_flight = false
|
|
|
|
if result.exitCode ~= 0 then
|
|
renderStatus("RAM —", "#fff1e6")
|
|
barWidget.setTooltip("Unable to read /proc/meminfo")
|
|
return
|
|
end
|
|
|
|
local text, memory_percent, swap_percent = string.match(
|
|
result.stdout,
|
|
"^([^\t]+)\t([%d.]+)\t([%d.]+)"
|
|
)
|
|
memory_percent = tonumber(memory_percent)
|
|
swap_percent = tonumber(swap_percent)
|
|
|
|
if text == nil or memory_percent == nil or swap_percent == nil then
|
|
renderStatus("RAM —", "#fff1e6")
|
|
barWidget.setTooltip("Unable to parse memory utilization")
|
|
return
|
|
end
|
|
|
|
local highest_usage = math.max(memory_percent, swap_percent)
|
|
renderStatus(text, colorForUsage(highest_usage))
|
|
barWidget.setTooltip(
|
|
string.format(
|
|
"RAM used / total · %.0f%% RAM · %.0f%% swap",
|
|
memory_percent,
|
|
swap_percent
|
|
)
|
|
)
|
|
end)
|
|
end
|