use epoll

Author: Sunny Jiao

gradle/verification-metadata.xml

@@ -1039,6 +1039,22 @@
             <sha256 value="22b49f09ab47f5bc6a6d1a572692b373f0647236877b1030f0eb52e8ee678258" origin="Generated by Gradle"/>
          </artifact>
       </component>
+      <component group="io.netty" name="netty-transport-classes-epoll" version="4.1.124.Final">
+         <artifact name="netty-transport-classes-epoll-4.1.124.Final.jar">
+            <sha256 value="a098c9a095961c8b118f9352bf23c443e0de7c53db2afa0db189d703aed53ef8" origin="Generated by Gradle"/>
+         </artifact>
+         <artifact name="netty-transport-classes-epoll-4.1.124.Final.pom">
+            <sha256 value="32af1974d8b0f6d28112e056fb75e7365c89f3a19a9abdae5cc1caed99028f42" origin="Generated by Gradle"/>
+         </artifact>
+      </component>
+      <component group="io.netty" name="netty-transport-native-epoll" version="4.1.124.Final">
+         <artifact name="netty-transport-native-epoll-4.1.124.Final-linux-aarch_64.jar">
+            <sha256 value="89e18fd1c2025467229c20bbca28c79e52eefb2ac5d6ce6d32641293c37e5e56" origin="Generated by Gradle"/>
+         </artifact>
+         <artifact name="netty-transport-native-epoll-4.1.124.Final.pom">
+            <sha256 value="2508cebd61c7c25d2d50c95e8ebffad8f81f52baff6185a0a45d198dd8b2606e" origin="Generated by Gradle"/>
+         </artifact>
+      </component>
       <component group="io.netty" name="netty-transport-native-unix-common" version="4.1.124.Final">
          <artifact name="netty-transport-native-unix-common-4.1.124.Final.jar">
             <sha256 value="5b824b485345d3eb4f29bd96005fe71d4bdcda3e4453a834fd58f7e113346115" origin="Generated by Gradle"/>

protocol/build.gradle

@@ -3,6 +3,7 @@ apply plugin: 'com.google.protobuf'
 def protobufVersion = '3.25.8'
 def grpcVersion = '1.75.0'
 def protocGenVersion = '1.60.0' // https://github.com/grpc/grpc-java/pull/11371 , 1.64.x is not supported CentOS 7.
+def nettyVersion = '4.1.124.Final' // Match the Netty version used by grpc-netty 1.75.0
 
 dependencies {
     api group: 'com.google.protobuf', name: 'protobuf-java', version: protobufVersion
@@ -19,6 +20,15 @@ dependencies {
 
     // end google grpc
 
+    // Add Epoll support for ARM64 Linux only
+    if (System.getProperty("os.name").toLowerCase().contains("linux")) {
+        def arch = System.getProperty("os.arch").toLowerCase()
+        if (arch.contains("aarch") || arch.contains("arm")) {
+            api group: 'io.netty', name: 'netty-transport-native-epoll', 
+                version: nettyVersion, classifier: 'linux-aarch_64'
+        }
+    }
+
     api group: 'com.google.api.grpc', name: 'proto-google-common-protos', version: '2.15.0'
 }