C# Channel实现线程间通信

同步方式实现：

csharp 复制代码

using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Channels;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    public class ChannelDemo
    {
        static Channel<Message> channel1 = Channel.CreateUnbounded<Message>();
        public static void Main2()
        {
            sender.Start(1);
            receive1.Start(2);
            receive2.Start(3);
            sender.Join();
            Thread.Sleep(3000);
            receive1.Interrupt();
            receive2.Interrupt();

            receive1.Join();
            receive2.Join();


            Console.ReadKey();
        }
        static Thread sender = new Thread(SendMsg);

        static Thread receive1 = new Thread(ReceiveMsg);
        static Thread receive2 = new Thread(ReceiveMsg);

        static void SendMsg(object id)
        {
            for (int i = 0; i < 20; i++)
            {
                if (channel1.Writer.TryWrite(new Message((int)id, i.ToString())))
                {
                    Console.WriteLine($"【线程{id}】发送了【{i}】");
                }
            }
        }

        static void ReceiveMsg(object id)
        {
            try
            {
                while (true)
                {
                    if (channel1.Reader.TryRead(out Message message))
                    {
                        Console.WriteLine($"【线程{id}】从【线程{message.id}】接收了【{message.content}】");

                    }
                    Thread.Sleep(1);
                }
            }
            catch (ThreadInterruptedException ex)
            {
                Console.WriteLine($"接收结束");
            }
        }
    }
}

异步方式：

csharp 复制代码

using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Remoting.Channels;
using System.Text;
using System.Threading;
using System.Threading.Channels;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    public class ChannelDemo2
    {
        static Channel<Message> channel1 = Channel.CreateUnbounded<Message>();
        
         public static async void Main2()
        {
            await Task.WhenAll(sender, sender2);
            channel1.Writer.Complete();
            await Task.WhenAll(receive1, receive2);
           
            Console.ReadKey();
        }

        static Task sender = SendMsgAsync(channel1.Writer, 1);
        static Task sender2 = SendMsgAsync(channel1.Writer, 4);
        static Task receive1 = ReceiveMsgAsync(channel1.Reader, 2);
        static Task receive2 = ReceiveMsgAsync(channel1.Reader, 3);

        static async  Task SendMsgAsync(ChannelWriter<Message> writer, int id)
        {
            for (int i = 0; i < 20; i++)
            {
                await writer.WriteAsync(new Message((int)id, i.ToString()));
                Console.WriteLine($"【线程{id}】发送了【{i}】");
            }
        }

        static async Task ReceiveMsgAsync(ChannelReader<Message> reader,int id)
        {
            try
            {
                while (!reader.Completion.IsCompleted)
                {
                    Message message = await reader.ReadAsync();           
                    Console.WriteLine($"【线程{id}】从【线程{message.id}】接收了【{message.content}】");
                   
                }
            }
            catch (ChannelClosedException ex)
            {
                Console.WriteLine($"ChannelClosed 接收结束");
            }
        }

    }
}

在对Channel进行实例化的时候，也可以传递一个Options，这里面可以对消息容量，是否多个发送者和接受者进行定义。