Add reset_garbage_collector to sorta fix mem leaks

I added in a variable to force clearing the garbage collector more
often, so that the memory leaks involving awful.spawn.easy_async
wouldn't cause massive performance issues over time.

4 files changed, 38 insertions, 0 deletions

diff --git a/cpu-widget/cpu-widget.lua b/cpu-widget/cpu-widget.lua
index 23b61f6..f1056e9 100644
--- a/cpu-widget/cpu-widget.lua
+++ b/cpu-widget/cpu-widget.lua
@@ -163,6 +163,7 @@ local function worker(user_args)
     -- This part runs constantly, also when the popup is closed.
     -- It updates the graph widget in the bar.
     local maincpu = {}
+    local reset_garbage_collector = 0
     watch(CMD_slim, timeout, function(widget, stdout)
 
         local _, user, nice, system, idle, iowait, irq, softirq, steal, _, _ =
@@ -178,12 +179,18 @@ local function worker(user_args)
         maincpu['idle_prev'] = idle
 
         widget:add_value(diff_usage)
+        reset_garbage_collector = reset_garbage_collector + 1
+        if (reset_garbage_collector > 5) then
+            collectgarbage()
+            reset_garbage_collector = 0
+        end
     end,
     cpugraph_widget
     )
 
     -- This part runs whenever the timer is fired.
     -- It therefore only runs when the popup is open.
+    local reset_garbage_collector = 0
     local cpus = {}
     popup_timer:connect_signal('timeout', function()
         awful.spawn.easy_async(CMD, function(stdout, _, _, _)
@@ -318,6 +325,11 @@ local function worker(user_args)
                 margins = 8,
                 widget = wibox.container.margin
             }
+            reset_garbage_collector = reset_garbage_collector + 1
+            if (reset_garbage_collector > 10) then
+                collectgarbage()
+                reset_garbage_collector = 0
+            end
         end)
     end)
 
diff --git a/mpdarc-widget/mpdarc.lua b/mpdarc-widget/mpdarc.lua
index a6a8e75..609efbf 100644
--- a/mpdarc-widget/mpdarc.lua
+++ b/mpdarc-widget/mpdarc.lua
@@ -87,13 +87,20 @@ mpdarc:connect_signal("button::press", function(_, _, _, button)
     elseif (button == 5) then awful.spawn(PREV_MPD_CMD, false)  -- scroll down
     end
 
+	local reset_garbage_collector = 0
     spawn.easy_async(GET_MPD_CMD, function(stdout, stderr, exitreason, exitcode)
         update_graphic(mpdarc, stdout, stderr, exitreason, exitcode)
+		reset_garbage_collector = reset_garbage_collector + 1
+		if (reset_garbage_collector > 10) then
+			collectgarbage()
+			reset_garbage_collector = 0
+		end
     end)
 end)
 
 local notification
 local function show_MPD_status()
+	local reset_garbage_collector
     spawn.easy_async(GET_MPD_CMD,
         function(stdout, _, _, _)
             notification = naughty.notify {
@@ -103,6 +110,11 @@ local function show_MPD_status()
                 hover_timeout = 0.5,
                 width = 600,
             }
+			reset_garbage_collector = reset_garbage_collector + 1
+			if (reset_garbage_collector > 10) then
+				collectgarbage()
+				reset_garbage_collector = 0
+			end
         end)
 end
 
diff --git a/ram-widget/ram-widget.lua b/ram-widget/ram-widget.lua
index 867d28e..970c2d6 100644
--- a/ram-widget/ram-widget.lua
+++ b/ram-widget/ram-widget.lua
@@ -59,6 +59,8 @@ local function worker(user_args)
         return math.floor(value / (total+total_swap) * 100 + 0.5) .. '%'
     end
 
+    local reset_garbage_collector = 0
+
     watch('bash -c "LANGUAGE=en_US.UTF-8 free | grep -z Mem.*Swap.*"', timeout,
         function(widget, stdout)
             total, used, free, shared, buff_cache, available, total_swap, used_swap, free_swap =
@@ -77,6 +79,11 @@ local function worker(user_args)
                   {'buff_cache ' .. getPercentage(buff_cache), buff_cache}
                 }
             end
+            reset_garbage_collector = reset_garbage_collector + 1
+            if (reset_garbage_collector > 9) then
+                collectgarbage()
+                reset_garbage_collector = 0
+            end
         end,
         ramgraph_widget
     )
diff --git a/volume-widget/volume.lua b/volume-widget/volume.lua
index 4c44042..b689f6e 100644
--- a/volume-widget/volume.lua
+++ b/volume-widget/volume.lua
@@ -143,7 +143,9 @@ local function build_header_row(text)
 end
 
 local function rebuild_popup()
+	local reset_garbage_collector = 0
     spawn.easy_async(LIST_DEVICES_CMD, function(stdout)
+		reset_garbage_collector = reset_garbage_collector + 1
 
         local sinks, sources = utils.extract_sinks_and_sources(stdout)
 
@@ -155,6 +157,11 @@ local function rebuild_popup()
         table.insert(rows, build_rows(sources, function() rebuild_popup() end, "source"))
 
         popup:setup(rows)
+
+		if (reset_garbage_collector > 10) then
+			collectgarbage()
+			reset_garbage_collector = 0
+		end
     end)
 end