Merge pull request 'IO_Uring support' (#12) from io_uring into master

Reviewed-on: SteamWar/Paper#12

patches/server/1010-IO_Uring-support.patch

@@ -0,0 +1,55 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Lixfel <agga-games@gmx.de>
+Date: Wed, 13 Mar 2024 18:23:22 +0100
+Subject: [PATCH] IO_Uring support
+
+
+diff --git a/build.gradle.kts b/build.gradle.kts
+index fb98936bb8a5488db75d676c5bcb4060597fbbf8..2e803f7231b66323373c16e0cbf70e2405b1ed59 100644
+--- a/build.gradle.kts
++++ b/build.gradle.kts
+@@ -31,6 +31,7 @@ dependencies {
+     runtimeOnly(log4jPlugins.output)
+     alsoShade(log4jPlugins.output)
+     implementation("io.netty:netty-codec-haproxy:4.1.87.Final") // Paper - Add support for proxy protocol
++    implementation("io.netty.incubator:netty-incubator-transport-native-io_uring:0.0.24.Final:linux-x86_64")
+     // Paper end
+     implementation("org.apache.logging.log4j:log4j-iostreams:2.19.0") // Paper - remove exclusion
+     implementation("org.ow2.asm:asm:9.4")
+diff --git a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
+index 44d99e89226adb6234b9405f25ac9dab9bd84297..6674e461e9668449686369d1e535ed372bd9240b 100644
+--- a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
++++ b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
+@@ -23,6 +23,9 @@ import io.netty.channel.nio.NioEventLoopGroup;
+ import io.netty.channel.socket.ServerSocketChannel;
+ import io.netty.channel.socket.nio.NioServerSocketChannel;
+ import io.netty.handler.timeout.ReadTimeoutHandler;
++import io.netty.incubator.channel.uring.IOUring;
++import io.netty.incubator.channel.uring.IOUringEventLoopGroup;
++import io.netty.incubator.channel.uring.IOUringServerSocketChannel;
+ import io.netty.util.HashedWheelTimer;
+ import io.netty.util.Timeout;
+ import io.netty.util.Timer;
+@@ -56,6 +59,9 @@ public class ServerConnectionListener {
+     public static final LazyLoadedValue<EpollEventLoopGroup> SERVER_EPOLL_EVENT_GROUP = new LazyLoadedValue<>(() -> {
+         return new EpollEventLoopGroup(0, (new ThreadFactoryBuilder()).setNameFormat("Netty Epoll Server IO #%d").setDaemon(true).setUncaughtExceptionHandler(new net.minecraft.DefaultUncaughtExceptionHandlerWithName(LOGGER)).build()); // Paper
+     });
++    public static final LazyLoadedValue<IOUringEventLoopGroup> SERVER_IOURING_EVENT_GROUP = new LazyLoadedValue<>(() -> {
++        return new IOUringEventLoopGroup(0, (new ThreadFactoryBuilder()).setNameFormat("Netty Epoll Server IO #%d").setDaemon(true).setUncaughtExceptionHandler(new net.minecraft.DefaultUncaughtExceptionHandlerWithName(LOGGER)).build()); // Paper
++    });
+     final MinecraftServer server;
+     public volatile boolean running;
+     private final List<ChannelFuture> channels = Collections.synchronizedList(Lists.newArrayList());
+@@ -89,7 +95,11 @@ public class ServerConnectionListener {
+             Class oclass;
+             LazyLoadedValue lazyinitvar;
+ 
+-            if (Epoll.isAvailable() && this.server.isEpollEnabled()) {
++            if (IOUring.isAvailable() && this.server.isEpollEnabled()) {
++                oclass = IOUringServerSocketChannel.class;
++                lazyinitvar = ServerConnectionListener.SERVER_IOURING_EVENT_GROUP;
++                ServerConnectionListener.LOGGER.info("Using io_uring channel type");
++            } else if (Epoll.isAvailable() && this.server.isEpollEnabled()) {
+                 if (address instanceof io.netty.channel.unix.DomainSocketAddress) {
+                     oclass = io.netty.channel.epoll.EpollServerDomainSocketChannel.class;
+                 } else {