c# - Thread.Sleep(0) 没有按描述工作？

Question

我正在阅读 this excellent article关于线程并阅读以下文本:

Thread.Sleep(0) relinquishes the thread’s current time slice immediately, voluntarily handing over the CPU to other threads.

我想测试一下，下面是我的测试代码:

static string s = "";

static void Main(string[] args)
{
    //Create two threads that append string s
    Thread threadPoints = new Thread(SetPoints);
    Thread threadNewLines = new Thread(SetNewLines);

    //Start threads
    threadPoints.Start();
    threadNewLines.Start();

    //Wait one second for threads to manipulate string s
    Thread.Sleep(1000);

    //Threads have an infinite loop so we have to close them forcefully. 
    threadPoints.Abort();
    threadNewLines.Abort();

    //Print string s and wait for user-input
    Console.WriteLine(s);
    Console.ReadKey();
}

threadPoints 和 threadNewLines 运行的函数:

static void SetPoints()
{
    while(true)
    {
        s += ".";
    }
}

static void SetNewLines()
{
    while(true)
    {
        s += "\n";
        Thread.Sleep(0);
    }
}

如果我正确理解 Thread.Sleep(0)，输出应该是这样的:

............        |
..............      |
................    | <- End of console
..........          |
.............       |
...............     |

但我得到这个作为输出:

....................|
....................|
....                |
                    |
                    |
....................|
....................|
.................   |
                    |

鉴于帖子开头提到的文章被许多程序员强烈推荐，我只能假设我对 Thread.Sleep(0) 的理解是错误的。因此，如果有人可以澄清，我将不胜感激。

Answer 1

什么thread.sleep(0) 是为了释放cpu 来处理其他线程，但这并不意味着另一个线程不能成为当前线程。如果您尝试将上下文发送到另一个线程，请尝试使用某种信号。