Integrate io_uring transport into 4.2 (#14045)

Motivation:

We should include our io_uring transport as part of 4.2

Modifications:

Add io_uring transport based on our incubator version and main version

Result:

Fixes #14010

---------

Co-authored-by: Chris Vest <christianvest_hansen@apple.com>

pom.xml

@@ -695,6 +695,8 @@
     <module>transport-native-unix-common</module>
     <module>transport-classes-epoll</module>
     <module>transport-native-epoll</module>
+    <module>transport-classes-io_uring</module>
+    <module>transport-native-io_uring</module>
     <module>transport-classes-kqueue</module>
     <module>transport-native-kqueue</module>
     <module>transport-rxtx</module>

transport-classes-epoll/src/main/java/io/netty/channel/epoll/EpollIoHandler.java

@@ -266,13 +266,14 @@ private final class DefaultEpollIoRegistration extends AtomicBoolean implements
         }
 
         @Override
-        public void submit(IoOps ops) throws Exception {
+        public long submit(IoOps ops) throws Exception {
             EpollIoOps epollIoOps = cast(ops);
             try {
                 if (!isValid()) {
-                    return;
+                    return -1;
                 }
                 Native.epollCtlMod(epollFd.intValue(), handle.fd().intValue(), epollIoOps.value);
+                return epollIoOps.value;
             } catch (IOException e) {
                 throw e;
             } catch (Exception e) {

transport-classes-io_uring/pom.xml

@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2024 The Netty Project
+  ~
+  ~ The Netty Project licenses this file to you under the Apache License,
+  ~ version 2.0 (the "License"); you may not use this file except in compliance
+  ~ with the License. You may obtain a copy of the License at:
+  ~
+  ~   https://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+  ~ WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+  ~ License for the specific language governing permissions and limitations
+  ~ under the License.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>io.netty</groupId>
+    <artifactId>netty-parent</artifactId>
+    <version>4.2.0.Final-SNAPSHOT</version>
+  </parent>
+  <artifactId>netty-transport-classes-io_uring</artifactId>
+
+  <name>Netty/Transport/Classes/io_uring</name>
+  <packaging>jar</packaging>
+
+  <properties>
+    <javaModuleName>io.netty.transport.classes.io_uring</javaModuleName>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>io.netty</groupId>
+      <artifactId>netty-common</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.netty</groupId>
+      <artifactId>netty-buffer</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.netty</groupId>
+      <artifactId>netty-transport</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.netty</groupId>
+      <artifactId>netty-transport-native-unix-common</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <artifactId>maven-jar-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+</project>