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 66bacce6f3cfa94341fa663a55c5e99a51f0e437..0c7681a431e1986484319bf2de89d3cc3f7a6275 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -308,6 +308,7 @@ 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
@@ -1207,6 +1208,7 @@ 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 a34f3eaa47c2b193a1b8dfbdf6f0c79bd3ace489..8f21c4aee84070eab2798cfcd4200b6d2e8320a4 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 881c5654f181ea9b66e1cdf3bc3bf46869e8557f..9c5bba0ae119f8d42274455e322530ceb5f67d9b 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;