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 138a58c5e5698b926b01e0170733dc3dbc5589ec..bfe52d5a93a35cafcb8965482b1c1d6c398255e4 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.config.DivineConfig.PerformanceCategory.virtualThreadsEnabled && org.bxteam.divinemc.config.DivineConfig.PerformanceCategory.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 25aeb8628a79b62b70dbbb1299d4b4e52986b96d..62aeee570d10ab4ac5c21c88987ba6d2c75ae2b8 100644
--- a/net/minecraft/commands/Commands.java
+++ b/net/minecraft/commands/Commands.java
@@ -475,7 +475,7 @@ 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.config.DivineConfig.PerformanceCategory.virtualThreadsEnabled && org.bxteam.divinemc.config.DivineConfig.PerformanceCategory.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 23144971acc04bbeacd719dafe2363d1618153b9..7dbefd83d164a7d97a56b02862fef3b2f17d5aab 100644
--- a/net/minecraft/server/MinecraftServer.java
+++ b/net/minecraft/server/MinecraftServer.java
@@ -2639,8 +2639,11 @@ 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.config.DivineConfig.PerformanceCategory.virtualThreadsEnabled && org.bxteam.divinemc.config.DivineConfig.PerformanceCategory.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 89eddabc1a01f78b6945f1b8b8d32cede7e3cd9d..83aa3dc2f8d54e9fc89d809495c9b51f81d4f8e4 100644
--- a/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -842,8 +842,11 @@ 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.config.DivineConfig.PerformanceCategory.virtualThreadsEnabled && org.bxteam.divinemc.config.DivineConfig.PerformanceCategory.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 20ba45054c243fbb85e50cf0bdf75648730cb0bc..10aecbb88a9a3dae3ecdf28aa449f1a1475a1905 100644
--- a/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
+++ b/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
@@ -53,7 +53,11 @@ import org.bukkit.event.player.PlayerPreLoginEvent;
 public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener, TickablePacketListener {
     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.config.DivineConfig.PerformanceCategory.virtualThreadsEnabled && org.bxteam.divinemc.config.DivineConfig.PerformanceCategory.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 b3d46e7687c572d9847124eb58e4a6011a78066c..9d2e2b1cff68383cd19b42e24559e3009ef1df54 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.config.DivineConfig.PerformanceCategory.virtualThreadsEnabled && org.bxteam.divinemc.config.DivineConfig.PerformanceCategory.virtualServerTextFilterPool
+            ? Executors.newVirtualThreadPerTaskExecutor()
+            : Executors.newFixedThreadPool(size, THREAD_FACTORY);
+        // DivineMC end - Virtual Threads
     }
 
     protected ServerTextFilter(