port tgstation/tgstation#52417

code/__DEFINES/subsystems.dm

@@ -155,3 +155,11 @@
 		}\
 		A.flags_1 &= ~OVERLAY_QUEUED_1;\
 	}
+
+/* Creates a new timer and adds it to the queue.
+ * Arguments:
+ * * callback the callback to call on timer finish
+ * * wait deciseconds to run the timer for
+ * * flags flags for the timer, see: code\__DEFINES\subsystems.dm
+ */
+#define addtimer(args...) _addtimer(args, file = __FILE__, line = __LINE__)

code/controllers/subsystem/timer.dm

@@ -319,19 +319,21 @@ SUBSYSTEM_DEF(timer)
 	var/wait
 	var/hash
 	var/list/flags
+	var/source
 	var/spent = 0 //time we ran the timer.
 	var/name //for easy debugging.
 	//cicular doublely linked list
 	var/datum/timedevent/next
 	var/datum/timedevent/prev
 
-/datum/timedevent/New(datum/callback/callBack, wait, flags, hash)
+/datum/timedevent/New(datum/callback/callBack, wait, flags, hash, source)
 	var/static/nextid = 1
 	id = TIMER_ID_NULL
 	src.callBack = callBack
 	src.wait = wait
 	src.flags = flags
 	src.hash = hash
+	src.source = source
 
 	if (flags & TIMER_CLIENT_TIME)
 		timeToRun = REALTIMEOFDAY + wait
@@ -456,7 +458,10 @@ SUBSYSTEM_DEF(timer)
 	else
 		. = "[callBack.object.type]"
 
-/proc/addtimer(datum/callback/callback, wait = 0, flags = 0)
+/*
+ * Do not call this directly. Instead, use the addtimer() macro, which includes source information
+ */
+/proc/_addtimer(datum/callback/callback, wait = 0, flags = 0, file, line)
 	if (!callback)
 		CRASH("addtimer called without a callback")
 
@@ -497,7 +502,7 @@ SUBSYSTEM_DEF(timer)
 	else if(flags & TIMER_OVERRIDE)
 		stack_trace("TIMER_OVERRIDE used without TIMER_UNIQUE")
 
-	var/datum/timedevent/timer = new(callback, wait, flags, hash)
+	var/datum/timedevent/timer = new(callback, wait, flags, hash, file && "[file]:[line]")
 	return timer.id
 
 /proc/deltimer(id)

code/game/objects/effects/spawners/xeno_egg_delivery.dm

@@ -15,5 +15,5 @@
 	message_admins("An alien egg has been delivered to [ADMIN_VERBOSEJMP(T)].")
 	log_game("An alien egg has been delivered to [AREACOORD(T)]")
 	var/message = "Attention [station_name()], we have entrusted you with a research specimen in [get_area_name(T, TRUE)]. Remember to follow all safety precautions when dealing with the specimen."
-	SSticker.OnRoundstart(CALLBACK(GLOBAL_PROC, /proc/addtimer, CALLBACK(GLOBAL_PROC, /proc/print_command_report, message), announcement_time))
+	SSticker.OnRoundstart(CALLBACK(GLOBAL_PROC, /proc/_addtimer, CALLBACK(GLOBAL_PROC, /proc/print_command_report, message), announcement_time))
 	return INITIALIZE_HINT_QDEL

code/game/world.dm

@@ -71,7 +71,7 @@ GLOBAL_VAR(restart_counter)
 #else
 	cb = VARSET_CALLBACK(SSticker, force_ending, TRUE)
 #endif
-	SSticker.OnRoundstart(CALLBACK(GLOBAL_PROC, /proc/addtimer, cb, 10 SECONDS))
+	SSticker.OnRoundstart(CALLBACK(GLOBAL_PROC, /proc/_addtimer, cb, 10 SECONDS))
 
 /world/proc/SetupExternalRSC()
 #if (PRELOAD_RSC == 0)

code/modules/admin/admin_verbs.dm

@@ -177,6 +177,7 @@ GLOBAL_LIST_INIT(admin_verbs_debug, world.AVerbsDebug())
 	/client/proc/cmd_display_overlay_log,
 	/client/proc/reload_configuration,
 	/datum/admins/proc/create_or_modify_area,
+	/client/proc/check_timer_sources,
 	/client/proc/generate_wikichem_list //DO NOT PRESS UNLESS YOU WANT SUPERLAG
 	)
 GLOBAL_PROTECT(admin_verbs_possess)
@@ -728,4 +729,4 @@ GLOBAL_LIST_INIT(admin_verbs_hideable, list(
 	set name = "Debug Stat Panel"
 	set category = "Debug"
 
-	src << output("", "statbrowser:create_debug")
+	src << output("", "statbrowser:create_debug")

code/modules/admin/verbs/debug.dm

@@ -822,3 +822,62 @@
 		return
 	if(alert(usr, "Are you absolutely sure you want to reload the configuration from the default path on the disk, wiping any in-round modificatoins?", "Really reset?", "No", "Yes") == "Yes")
 		config.admin_reload()
+
+/// A debug verb to check the sources of currently running timers
+/client/proc/check_timer_sources()
+	set category = "Debug"
+	set name = "Check Timer Sources"
+	set desc = "Checks the sources of the running timers"
+	if(!check_rights(R_DEBUG))
+		return
+
+	var/bucket_list_output = generate_timer_source_output(SStimer.bucket_list)
+	var/second_queue = generate_timer_source_output(SStimer.second_queue)
+
+	usr << browse({"
+		<h3>bucket_list</h3>
+		[bucket_list_output]
+		<h3>second_queue</h3>
+		[second_queue]
+	"}, "window=check_timer_sources;size=700x700")
+
+/proc/generate_timer_source_output(list/datum/timedevent/events)
+	var/list/per_source = list()
+
+	// Collate all events and figure out what sources are creating the most
+	for (var/_event in events)
+		if (!_event)
+			continue
+		var/datum/timedevent/event = _event
+
+		do
+			if (event.source)
+				if (per_source[event.source] == null)
+					per_source[event.source] = 1
+				else
+					per_source[event.source] += 1
+			event = event.next
+		while (event && event != _event)
+
+	// Now, sort them in order
+	var/list/sorted = list()
+	for (var/source in per_source)
+		sorted += list(list("source" = source, "count" = per_source[source]))
+	sorted = sortTim(sorted, .proc/cmp_timer_data)
+
+	// Now that everything is sorted, compile them into an HTML output
+	var/output = "<table border='1'>"
+
+	for (var/_timer_data in sorted)
+		var/list/timer_data = _timer_data
+		output += {"<tr>
+			<td><b>[timer_data["source"]]</b></td>
+			<td>[timer_data["count"]]</td>
+		</tr>"}
+
+	output += "</table>"
+
+	return output
+
+/proc/cmp_timer_data(list/a, list/b)
+	return b["count"] - a["count"]

code/modules/jobs/job_types/job.dm

@@ -140,7 +140,7 @@
 /datum/job/proc/announce_head(var/mob/living/carbon/human/H, var/channels) //tells the given channel that the given mob is the new department head. See communications.dm for valid channels.
 	if(H && GLOB.announcement_systems.len)
 		//timer because these should come after the captain announcement
-		SSticker.OnRoundstart(CALLBACK(GLOBAL_PROC, .proc/addtimer, CALLBACK(pick(GLOB.announcement_systems), /obj/machinery/announcement_system/proc/announce, "NEWHEAD", H.real_name, H.job, H.client?.prefs.alt_titles_preferences[H.job], channels), 1))
+		SSticker.OnRoundstart(CALLBACK(GLOBAL_PROC, .proc/_addtimer, CALLBACK(pick(GLOB.announcement_systems), /obj/machinery/announcement_system/proc/announce, "NEWHEAD", H.real_name, H.job, H.client?.prefs.alt_titles_preferences[H.job], channels), 1))
 
 //If the configuration option is set to require players to be logged as old enough to play certain jobs, then this proc checks that they are, otherwise it just returns 1
 /datum/job/proc/player_old_enough(client/C)