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 e9aaa471c5a21307af9c9c15c59dd98eba1a7675..00808ffd5b9afd16fb0c7353ef834d0479598ac8 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -329,6 +329,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
     public final io.papermc.paper.configuration.PaperConfigurations paperConfigurations; // Paper - add paper configuration files
     public boolean isIteratingOverLevels = false; // Paper - Throw exception on world create while being ticked
     private final Set<String> pluginsBlockingSleep = new java.util.HashSet<>(); // Paper - API to allow/disallow tick sleeping
+    public boolean lagging = false; // Purpur - Lagging threshold
 
     public volatile Thread shutdownThread; // Paper
     public volatile boolean abnormalExit = false; // Paper
@@ -1305,6 +1306,7 @@ 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 - Lagging threshold
                     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 3259d5796287f2e7886b5742b25d9f1f1bc22d6d..9d330d5e113a19e705d61a7532832d9decdb64f2 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -3292,4 +3292,10 @@ public final class CraftServer implements Server {
         return this.getProperties().serverName;
     }
     // Purpur end
+    // Purpur start - Lagging threshold
+    @Override
+    public boolean isLagging() {
+        return getServer().lagging;
+    }
+    // Purpur end - Lagging threshold
 }
diff --git a/src/main/java/org/purpurmc/purpur/PurpurConfig.java b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
index 47ffe5ef0429101414b33a41e91631712a92b32d..bfa985913f3f750a0727a567d3b5951b4d6ed4ca 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
@@ -196,6 +196,11 @@ 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;