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 80a7a85e1a03a1ca406259207e1ae3b909b3284f..aa2d99de3d23d262542bfb1592fe084f94230f85 100644
--- a/net/minecraft/Util.java
+++ b/net/minecraft/Util.java
@@ -97,7 +97,12 @@ 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 d7922847bd398d809e8b8a31bf136c804305a32b..559fd3d12dc5bc84bd976e684153295d8fb7cf64 100644
--- a/net/minecraft/commands/Commands.java
+++ b/net/minecraft/commands/Commands.java
@@ -480,7 +480,7 @@ 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 8c6c7f2296e4dca882c9f349772aec02e9d92ee1..3bb5f956c2763007a83bc209d339c0159cb1ea8e 100644
--- a/net/minecraft/server/MinecraftServer.java
+++ b/net/minecraft/server/MinecraftServer.java
@@ -2838,8 +2838,11 @@ 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 2dc21a17ece24dc3f6ab7002fb4a8379c82da787..474642146a1b9c665b92368d8a9cffa3a75b9fd3 100644
--- a/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -802,8 +802,11 @@ 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 45ea5fa0ef57724acce46008c53f7fa216cf78ee..f4a9d49247d2124b03273c38b14ddf9661184749 100644
--- a/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
+++ b/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
@@ -55,7 +55,11 @@ 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(