C# 使用共享内存通信

//Shared Memory


using (MemoryMappedFile mmf = MemoryMappedFile.CreateOrOpen("sharedmem",500))
{
	object obj = new Object();
	ManualResetEvent myevent = new ManualResetEvent(false);
	
	//写入线程每500ms发送一个消息，并发出一次event
	Thread th_writer = new Thread(() =>
	{
		int i = 0;
		while (true)
		{
			using (MemoryMappedViewStream buff = mmf.CreateViewStream())
			{
				byte[] buffer = Encoding.UTF8.GetBytes($"hello reader!{i}");
				lock (obj)
				{
					buff.Write(buffer, 0, buffer.Length);
					$"msg sent".Dump();
					myevent.Set();
				}
				i++;
				Thread.Sleep(500);
			}
		}
	});

	//读取线程循环等待event后读取消息
	Thread th_reader = new Thread(() =>
	{
		while (true)
		{
			using (MemoryMappedViewStream stream = mmf.CreateViewStream())
			{
				myevent.WaitOne();
				byte[] buffer = new byte[1000];
				string message = "";
				lock (obj)
				{
					stream.Read(buffer, 0, buffer.Length);
					message = Encoding.UTF8.GetString(buffer).Trim('\0');
				}
				$"receive msg:{message}".Dump();
				myevent.Reset();

				Thread.Sleep(5);
			}
		}
	});

	th_reader.Start();
	th_writer.Start();

	while (true)
	{
		await Task.Delay(1000);
	}
}