IoUringIoHandler.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.IoHandle;
import io.netty.channel.IoHandler;
import io.netty.channel.IoHandlerContext;
import io.netty.channel.IoHandlerFactory;
import io.netty.channel.IoOps;
import io.netty.channel.IoRegistration;
import io.netty.channel.unix.Buffer;
import io.netty.channel.unix.Errors;
import io.netty.channel.unix.FileDescriptor;
import io.netty.channel.unix.IovArray;
import io.netty.util.collection.IntObjectHashMap;
import io.netty.util.collection.IntObjectMap;
import io.netty.util.concurrent.ThreadAwareExecutor;
import io.netty.util.internal.CleanableDirectBuffer;
import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.StringUtil;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;

import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;

import static java.lang.Math.max;
import static java.lang.Math.min;
import static java.util.Objects.requireNonNull;

/**
 * {@link IoHandler} which is implemented in terms of the Linux-specific {@code io_uring} API.
 */
public final class IoUringIoHandler implements IoHandler {
    private static final InternalLogger logger = InternalLoggerFactory.getInstance(IoUringIoHandler.class);

    private final RingBuffer ringBuffer;
    private final IntObjectMap<IoUringBufferRing> registeredIoUringBufferRing;
    private final IntObjectMap<DefaultIoUringIoRegistration> registrations;
    // The maximum number of bytes for an InetAddress / Inet6Address
    private final byte[] inet4AddressArray = new byte[SockaddrIn.IPV4_ADDRESS_LENGTH];
// ... (645 more lines)