c# 通过内存映射实现文件共享内存

using System;using System.Collections.Generic;android从资源文件中读取文件流显示using System.Linq;using System.Text;
using System.IO;
//引用内存映射文件命名空间using System.IO.MemoryMappedFiles;
namespace App1{    class Program    {        static void Main(string[] args)        {            long capacity = 1<<10<<10;
            //创建或者打开共享内存            using (var mmf = MemoryMappedFile.CreateOrOpen("testMmf", capacity, MemoryMappedFileAccess.ReadWrite))            {                //通过MemoryMappedFile的CreateViewAccssor方法获得共享内存的访问器                var viewAccessor = mmf.CreateViewAccessor(0, capacity);                //循环写入，使在这个进程中可以向共享内存中写入不同的字符串值                while (true)                {                    Console.WriteLine("请输入一行要写入共享内存的文字：");
                    string input = Console.ReadLine();
                    //向共享内存开始位置写入字符串的长度                    viewAccessor.Write(0, input.Length);
                    //向共享内存4位置写入字符                    viewAccessor.WriteArray<char>(4, input.ToArray(), 0, input.Length);                }
            }                    }    }}

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading;
//引用使用内存映射文件需要的命名空间using System.IO.MemoryMappedFiles;
namespace App2{    class Program    {        static void Main(string[] args)        {              long capacity = 1<<10<<10;
              using (var mmf = MemoryMappedFile.OpenExisting("testMmf"))              {                  MemoryMappedViewAccessor viewAccessor = mmf.CreateViewAccessor(0, capacity);
                  //循环刷新共享内存字符串的值                  while (true)                  {                      //读取字符长度                      int strLength = viewAccessor.ReadInt32(0);                                            char[] charsInMMf = new char[strLength];                      //读取字符                      viewAccessor.ReadArray<char>(4, charsInMMf, 0, strLength);                      Console.Clear();                      Console.Write(charsInMMf);                      Console.Write("\r");                      Thread.Sleep(200);                  }              }        }    }}

using System;using System.Collections.Generic;using System.Linq;using System.Text;
using System.IO.MemoryMappedFiles;using System.IO;
namespace App3{    class Program    {        static void Main(string[] args)        {            long capacity = 1 << 10 << 10;            //打开共享内存            using (var mmf = MemoryMappedFile.OpenExisting("testMmf"))            {                //使用CreateViewStream方法返回stream实例                using (var mmViewStream = mmf.CreateViewStream(0, capacity))                {                    //这里要制定Unicode编码否则会出问题                    using (BinaryReader rdr = new BinaryReader(mmViewStream,Encoding.Unicode))                    {                        while (true)                        {                            mmViewStream.Seek(0, SeekOrigin.Begin);
                            int length = rdr.ReadInt32();
                            char[] chars = rdr.ReadChars(length);
                            Console.Write(chars);                            Console.Write("\r");
                            System.Threading.Thread.Sleep(200);                            Console.Clear();                        }                    }                }            }        }    }}