From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MartijnMuijsers <martijnmuijsers@live.nl>
Date: Sat, 26 Nov 2022 16:54:05 +0100
Subject: [PATCH] Measure last tick time

License: MIT (https://opensource.org/licenses/MIT)

This patch is based on the following patch:
"Add getLastTickMs api"
By: tr7zw <tr7zw@live.de>
As part of: YAPFA (https://github.com/tr7zw/YAPFA)
Licensed under: MIT (https://opensource.org/licenses/MIT)

diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 4311a2e22704606f7f2f0928df6dcbe65e3fa8d6..9720e5360beabe7e15b0b964cb3b81d5af2b4bf8 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1094,6 +1094,11 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
 
     public static volatile RuntimeException chunkSystemCrash; // Paper - rewrite chunk system
 
+    // Gale start - YAPFA - last tick time
+    public static long lastTickProperTime;
+    public static long lastTickOversleepTime;
+    // Gale end - YAPFA - last tick time
+
     protected void runServer() {
         try {
             long serverStartTime = Util.getNanos(); // Paper
@@ -1170,7 +1175,9 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
                 this.nextTickTime += 50L;
                 this.startMetricsRecordingTick();
                 this.profiler.push("tick");
+                long tickProperStart = System.nanoTime(); // Gale - YAPFA - last tick time
                 this.tickServer(this::haveTime);
+                this.lastTickProperTime = (System.nanoTime() - tickProperStart) / 1000000L; // Gale - YAPFA - last tick time
                 this.profiler.popPush("nextTickWait");
                 this.mayHaveDelayedTasks = true;
                 this.delayedTasksMaxNextTickTime = Math.max(Util.getMillis() + 50L, this.nextTickTime);
@@ -1286,9 +1293,11 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
 
     protected void waitUntilNextTick() {
         //this.executeAll(); // Paper - move this into the tick method for timings
+        long tickOversleepStart = System.nanoTime(); // Gale - YAPFA - last tick time
         this.managedBlock(() -> {
             return !this.canSleepForTickNoOversleep(); // Paper - move oversleep into full server tick
         });
+        this.lastTickOversleepTime = (System.nanoTime() - tickOversleepStart) / 1000000L; // Gale - YAPFA - last tick time
     }
 
     @Override