From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Tue, 23 Jul 2019 10:07:16 -0500
Subject: [PATCH] Lagging threshold


diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 537726b345038e045172a42464ea166353515868..5aabb74e0fd49a7ab97d324f9fa7bfc26527af00 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -312,6 +312,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
     public final io.papermc.paper.configuration.PaperConfigurations paperConfigurations; // Paper - add paper configuration files
     public static long currentTickLong = 0L; // Paper - track current tick as a long
     public boolean isIteratingOverLevels = false; // Paper - Throw exception on world create while being ticked
+    public boolean lagging = false; // Purpur
 
     public volatile Thread shutdownThread; // Paper
     public volatile boolean abnormalExit = false; // Paper
@@ -1214,6 +1215,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
                     this.recentTps[0] = tps1.getAverage();
                     this.recentTps[1] = tps5.getAverage();
                     this.recentTps[2] = tps15.getAverage();
+                    lagging = recentTps[0] < org.purpurmc.purpur.PurpurConfig.laggingThreshold; // Purpur
                     tickSection = currentTime;
                 }
                 // Paper end - further improve server tick loop
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 7edceb03bf1db24892dd311c31edb75a223011f0..8e8f6e8f867b9dd63b91a91342629ba40e8e7374 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -3285,5 +3285,10 @@ public final class CraftServer implements Server {
     public String getServerName() {
         return this.getProperties().serverName;
     }
+
+    @Override
+    public boolean isLagging() {
+        return getServer().lagging;
+    }
     // Purpur end
 }
diff --git a/src/main/java/org/purpurmc/purpur/PurpurConfig.java b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
index fdf726c455f9a4de822644c703de7ffeab6b3702..f80414b9bb7fb1f2849749481209648516fb28fb 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
@@ -193,6 +193,11 @@ public class PurpurConfig {
         serverModName = getString("settings.server-mod-name", serverModName);
     }
 
+    public static double laggingThreshold = 19.0D;
+    private static void tickLoopSettings() {
+        laggingThreshold = getDouble("settings.lagging-threshold", laggingThreshold);
+    }
+
     public static int barrelRows = 3;
     public static boolean enderChestSixRows = false;
     public static boolean enderChestPermissionRows = false;