A healthy addition of debug verbs (#21843)

* A healthy addition of debug verbs

* Forgot some stuff

* SEANNNNNNNNNNN

code/modules/admin/verbs/debug.dm

@@ -835,6 +835,52 @@ GLOBAL_PROTECT(AdminProcCallSpamPrevention)
 
 	usr << browse(dat, "window=simpledellog")
 
+/client/proc/show_gc_queues()
+	set name = "View GC Queue"
+	set category = "Debug"
+	set desc = "Shows the list of whats currently in a GC queue"
+
+	if(!check_rights(R_DEBUG|R_VIEWRUNTIMES))
+		return
+
+	// Get the amount of queues
+	var/queue_count = length(SSgarbage.queues)
+	var/list/selectable_queues = list()
+	// Setup choices
+	for(var/i in 1 to queue_count)
+		selectable_queues["Queue #[i] ([length(SSgarbage.queues[i])] item\s)"] = i
+
+	// Ask the user
+	var/choice = input(usr, "Select a GC queue. Note that the queue lookup may lag the server.", "GC Queue") as null|anything in selectable_queues
+	if(!choice)
+		return
+
+	// Get our target
+	var/list/target_queue = SSgarbage.queues[selectable_queues[choice]]
+	var/list/queue_counts = list()
+
+	// Iterate that target and see whats what
+	for(var/queue_entry in target_queue)
+		var/datum/D = locate(queue_entry[1])
+		if(!istype(D))
+			continue
+
+		if(!queue_counts[D.type])
+			queue_counts[D.type] = 0
+
+		queue_counts[D.type]++
+
+	// Sort it the right way
+	var/list/sorted = sortTim(queue_counts, GLOBAL_PROC_REF(cmp_numeric_dsc), TRUE)
+
+	// And make a nice little menu
+	var/list/text = list("<h1>Current status of [choice]</h1>", "<ul>")
+	for(var/key in sorted)
+		text += "<li>[key] - [sorted[key]]</li>"
+
+	text += "</ul>"
+	usr << browse(text.Join(), "window=gcqueuestatus")
+
 /client/proc/cmd_admin_toggle_block(mob/M, block)
 	if(!check_rights(R_SPAWN))
 		return