prejoin and join player stats

builtin/on_joinplayer.lua

@@ -0,0 +1,24 @@
+local metric_time = monitoring.counter("registered_on_joinplayers_time", "time usage in microseconds" ..
+	"for registered_on_joinplayers calls")
+local metric_time_max = monitoring.gauge(
+	"registered_on_joinplayers_time_max",
+	"max time usage in microseconds for registered_on_joinplayers calls",
+	{ autoflush=true }
+)
+
+
+minetest.register_on_mods_loaded(function()
+  for i, fn in ipairs(minetest.registered_on_joinplayers) do
+
+		minetest.registered_on_joinplayers[i] = function(...)
+			local t0 = minetest.get_us_time()
+			fn(...)
+			local t1 = minetest.get_us_time()
+
+			local diff = t1 - t0
+      metric_time.inc(diff)
+      metric_time_max.setmax(diff)
+		end
+
+  end
+end)

builtin/on_prejoinplayer.lua

@@ -0,0 +1,24 @@
+local metric_time = monitoring.counter("registered_on_prejoinplayers_time", "time usage in microseconds" ..
+	"for registered_on_prejoinplayers calls")
+local metric_time_max = monitoring.gauge(
+	"registered_on_prejoinplayers_time_max",
+	"max time usage in microseconds for registered_on_prejoinplayers calls",
+	{ autoflush=true }
+)
+
+
+minetest.register_on_mods_loaded(function()
+  for i, fn in ipairs(minetest.registered_on_prejoinplayers) do
+
+		minetest.registered_on_prejoinplayers[i] = function(...)
+			local t0 = minetest.get_us_time()
+			fn(...)
+			local t1 = minetest.get_us_time()
+
+			local diff = t1 - t0
+      metric_time.inc(diff)
+      metric_time_max.setmax(diff)
+		end
+
+  end
+end)

init.lua

@@ -61,6 +61,8 @@ if not monitoring.settings.builtin_disable then
   dofile(MP.."/builtin/player_jitter.lua")
   dofile(MP.."/builtin/player_rtt.lua")
   dofile(MP.."/builtin/nodetimer_calls.lua")
+  dofile(MP.."/builtin/on_joinplayer.lua")
+  dofile(MP.."/builtin/on_prejoinplayer.lua")
   dofile(MP.."/builtin/playercount.lua")
   dofile(MP.."/builtin/protection_violation_count.lua")
   dofile(MP.."/builtin/punchplayer.lua")