From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: NONPLAYT <76615486+NONPLAYT@users.noreply.github.com>
Date: Mon, 24 Feb 2025 19:29:58 +0300
Subject: [PATCH] Virtual Threads


diff --git a/net/minecraft/Util.java b/net/minecraft/Util.java
index d1fcc73f579d1c4ac79213ad039c8d803ff51b1a..047ce2391a8ec4bab1b8a2020ab3f20953e5b95f 100644
--- a/net/minecraft/Util.java
+++ b/net/minecraft/Util.java
@@ -98,7 +98,12 @@ public class Util {
     public static final TracingExecutor DIMENSION_DATA_IO_POOL = makeExtraIoExecutor("Dimension-Data-IO-Worker-"); // Paper - Separate dimension data IO pool
     private static final TracingExecutor DOWNLOAD_POOL = makeIoExecutor("Download-", true);
     // Paper start - don't submit BLOCKING PROFILE LOOKUPS to the world gen thread
-    public static final ExecutorService PROFILE_EXECUTOR = Executors.newFixedThreadPool(2, new java.util.concurrent.ThreadFactory() {
+    // DivineMC start - Virtual Threads
+    public static final ExecutorService PROFILE_EXECUTOR = org.bxteam.divinemc.DivineConfig.virtualThreadsEnabled && org.bxteam.divinemc.DivineConfig.virtualProfileLookupPool
+        ? Executors.newVirtualThreadPerTaskExecutor()
+        : Executors.newFixedThreadPool(2, new java.util.concurrent.ThreadFactory()
+    {
+    // DivineMC end - Virtual Threads
 
         private final AtomicInteger count = new AtomicInteger();
 
diff --git a/net/minecraft/commands/Commands.java b/net/minecraft/commands/Commands.java
index 07e228b620962e507b7db70e5a743daf2e5c82ca..cff86f3a50529a9d1a8873aa6f7f77da248c6c67 100644
--- a/net/minecraft/commands/Commands.java
+++ b/net/minecraft/commands/Commands.java
@@ -473,7 +473,7 @@ public class Commands {
     }
 
     // Fixed pool, but with discard policy
-    public static final java.util.concurrent.ExecutorService COMMAND_SENDING_POOL = new java.util.concurrent.ThreadPoolExecutor(
+    public static final java.util.concurrent.ExecutorService COMMAND_SENDING_POOL = org.bxteam.divinemc.DivineConfig.virtualThreadsEnabled && org.bxteam.divinemc.DivineConfig.virtualCommandBuilderScheduler ? java.util.concurrent.Executors.newVirtualThreadPerTaskExecutor() : new java.util.concurrent.ThreadPoolExecutor( // DivineMC - Virtual Threads
         2, 2, 0, java.util.concurrent.TimeUnit.MILLISECONDS,
         new java.util.concurrent.LinkedBlockingQueue<>(),
         new com.google.common.util.concurrent.ThreadFactoryBuilder()
diff --git a/net/minecraft/server/MinecraftServer.java b/net/minecraft/server/MinecraftServer.java
index 1a842ecfb717f7b5ed2fdb2779040ab0e857612d..b2e90749bcaf3b9132681713ab0afae95b3197ee 100644
--- a/net/minecraft/server/MinecraftServer.java
+++ b/net/minecraft/server/MinecraftServer.java
@@ -2641,8 +2641,11 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
         }
     }
 
-    public final java.util.concurrent.ExecutorService chatExecutor = java.util.concurrent.Executors.newCachedThreadPool(
-        new com.google.common.util.concurrent.ThreadFactoryBuilder().setDaemon(true).setNameFormat("Async Chat Thread - #%d").setUncaughtExceptionHandler(new net.minecraft.DefaultUncaughtExceptionHandlerWithName(net.minecraft.server.MinecraftServer.LOGGER)).build()); // Paper
+    // DivineMC start - Virtual Threads
+    public final java.util.concurrent.ExecutorService chatExecutor = org.bxteam.divinemc.DivineConfig.virtualThreadsEnabled && org.bxteam.divinemc.DivineConfig.virtualChatScheduler
+        ? java.util.concurrent.Executors.newVirtualThreadPerTaskExecutor()
+        : java.util.concurrent.Executors.newCachedThreadPool(new com.google.common.util.concurrent.ThreadFactoryBuilder().setDaemon(true).setNameFormat("Async Chat Thread - #%d").setUncaughtExceptionHandler(new net.minecraft.DefaultUncaughtExceptionHandlerWithName(net.minecraft.server.MinecraftServer.LOGGER)).build()); // Paper
+    // DivineMC end - Virtual Threads
     public final ChatDecorator improvedChatDecorator = new io.papermc.paper.adventure.ImprovedChatDecorator(this); // Paper - adventure
 
     public ChatDecorator getChatDecorator() {
diff --git a/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 17a81ea60488fee233a3284fc7c93ec896ed1497..18c96d6cfb6b3b208fd48aaabf8edba26d233aef 100644
--- a/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -801,8 +801,11 @@ public class ServerGamePacketListenerImpl
     }
 
     // Paper start - AsyncTabCompleteEvent
-    private static final java.util.concurrent.ExecutorService TAB_COMPLETE_EXECUTOR = java.util.concurrent.Executors.newFixedThreadPool(4,
-        new com.google.common.util.concurrent.ThreadFactoryBuilder().setDaemon(true).setNameFormat("Async Tab Complete Thread - #%d").setUncaughtExceptionHandler(new net.minecraft.DefaultUncaughtExceptionHandlerWithName(MinecraftServer.LOGGER)).build());
+    // DivineMC start - Virtual Threads
+    private static final java.util.concurrent.ExecutorService TAB_COMPLETE_EXECUTOR = org.bxteam.divinemc.DivineConfig.virtualThreadsEnabled && org.bxteam.divinemc.DivineConfig.virtualTabCompleteScheduler
+        ? java.util.concurrent.Executors.newVirtualThreadPerTaskExecutor()
+        : java.util.concurrent.Executors.newFixedThreadPool(4, new com.google.common.util.concurrent.ThreadFactoryBuilder().setDaemon(true).setNameFormat("Async Tab Complete Thread - #%d").setUncaughtExceptionHandler(new net.minecraft.DefaultUncaughtExceptionHandlerWithName(MinecraftServer.LOGGER)).build());
+    // DivineMC end - Virtual Threads
     // Paper end - AsyncTabCompleteEvent
 
     @Override
diff --git a/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
index 637b2eb7104cb0bc7f314ad6eea11a432e899861..738c8749593cf3c30a1c321664abf12ba8dac635 100644
--- a/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
+++ b/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
@@ -54,7 +54,11 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener,
     // CraftBukkit end
     private static final AtomicInteger UNIQUE_THREAD_ID = new AtomicInteger(0);
     static final Logger LOGGER = LogUtils.getLogger();
-    private static final java.util.concurrent.ExecutorService authenticatorPool = java.util.concurrent.Executors.newCachedThreadPool(new com.google.common.util.concurrent.ThreadFactoryBuilder().setNameFormat("User Authenticator #%d").setUncaughtExceptionHandler(new DefaultUncaughtExceptionHandler(LOGGER)).build()); // Paper - Cache authenticator threads
+    // DivineMC start - Virtual Threads
+    private static final java.util.concurrent.ExecutorService authenticatorPool = org.bxteam.divinemc.DivineConfig.virtualThreadsEnabled && org.bxteam.divinemc.DivineConfig.virtualAuthenticatorScheduler
+        ? java.util.concurrent.Executors.newVirtualThreadPerTaskExecutor()
+        : java.util.concurrent.Executors.newCachedThreadPool(new com.google.common.util.concurrent.ThreadFactoryBuilder().setNameFormat("User Authenticator #%d").setUncaughtExceptionHandler(new DefaultUncaughtExceptionHandler(LOGGER)).build()); // Paper - Cache authenticator threads
+    // DivineMC end - Virtual Threads
     private static final int MAX_TICKS_BEFORE_LOGIN = 600;
     private final byte[] challenge;
     final MinecraftServer server;
diff --git a/net/minecraft/server/network/ServerTextFilter.java b/net/minecraft/server/network/ServerTextFilter.java
index 5d18f6c3173ed257bef15637a53adbff26ee9062..c843e073db2a0046bbd5b64e1a4f4e956ce88a70 100644
--- a/net/minecraft/server/network/ServerTextFilter.java
+++ b/net/minecraft/server/network/ServerTextFilter.java
@@ -48,7 +48,11 @@ public abstract class ServerTextFilter implements AutoCloseable {
     final ExecutorService workerPool;
 
     protected static ExecutorService createWorkerPool(int size) {
-        return Executors.newFixedThreadPool(size, THREAD_FACTORY);
+        // DivineMC start - Virtual Threads
+        return org.bxteam.divinemc.DivineConfig.virtualThreadsEnabled && org.bxteam.divinemc.DivineConfig.virtualServerTextFilterPool
+            ? Executors.newVirtualThreadPerTaskExecutor()
+            : Executors.newFixedThreadPool(size, THREAD_FACTORY);
+        // DivineMC end - Virtual Threads
     }
 
     protected ServerTextFilter(