AbstractIoUringServerChannel.java — netty Source File

Source Code

/*
 * 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.
 */
package io.netty.channel.uring;


import io.netty.channel.Channel;
import io.netty.channel.ChannelMetadata;
import io.netty.channel.ChannelOutboundBuffer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.ChannelPromise;
import io.netty.channel.IoRegistration;
import io.netty.channel.ServerChannel;
import io.netty.channel.unix.Buffer;
import io.netty.channel.unix.Errors;
import io.netty.util.internal.CleanableDirectBuffer;

import java.net.SocketAddress;
import java.nio.ByteBuffer;

import static io.netty.channel.unix.Errors.ERRNO_EAGAIN_NEGATIVE;
import static io.netty.channel.unix.Errors.ERRNO_EWOULDBLOCK_NEGATIVE;

abstract class AbstractIoUringServerChannel extends AbstractIoUringChannel implements ServerChannel {
    private static final ChannelMetadata METADATA = new ChannelMetadata(false, 16);

    private static final class AcceptedAddressMemory {
        private final CleanableDirectBuffer acceptedAddressMemoryCleanable;
        private final ByteBuffer acceptedAddressMemory;
        private final CleanableDirectBuffer acceptedAddressLengthMemoryCleanable;
        private final ByteBuffer acceptedAddressLengthMemory;
        private final long acceptedAddressMemoryAddress;
        private final long acceptedAddressLengthMemoryAddress;

        AcceptedAddressMemory() {
            acceptedAddressMemoryCleanable = Buffer.allocateDirectBufferWithNativeOrder(Native.SIZEOF_SOCKADDR_STORAGE);
            acceptedAddressMemory = acceptedAddressMemoryCleanable.buffer();
            acceptedAddressMemoryAddress = Buffer.memoryAddress(acceptedAddressMemory);
            acceptedAddressLengthMemoryCleanable = Buffer.allocateDirectBufferWithNativeOrder(Long.BYTES);
            acceptedAddressLengthMemory = acceptedAddressLengthMemoryCleanable.buffer();
            // Needs to be initialized to the size of acceptedAddressMemory.
            // See https://man7.org/linux/man-pages/man2/accept.2.html
            acceptedAddressLengthMemory.putLong(0, Native.SIZEOF_SOCKADDR_STORAGE);
            acceptedAddressLengthMemoryAddress = Buffer.memoryAddress(acceptedAddressLengthMemory);
        }

        void free() {
            acceptedAddressMemoryCleanable.clean();
// ... (242 more lines)