C# 线程 - 产生多个线程，只有 1 或 2 个正在执行其他线程等待

Question

我在下面有这段代码，我在其中生成了几个线程，通常大约 7 个，然后加入它们以等待全部完成：

            List<Thread> threads = new List<Thread>();
            Thread thread;
            foreach (int size in _parameterCombinations.Keys)
            {
                thread = new Thread(new ParameterizedThreadStart(CalculateResults));
                thread.Start(size);
                threads.Add(thread);
            }

            // wait for all threads to finish
            for (int index = 0; index < threads.Count; index++)
            {
                threads[index].Join();
            }

当我检查这一点时，大多数时候只有一两个线程同时运行，当我重新运行应用程序时只有一两次，所有线程都执行了。

有没有办法强制所有线程开始执行？

非常感谢。

Answer 1

你的代码没问题..我修改了它以向你展示线程的执行不限于 2 个线程。 我会在计算过程中寻找问题..

class Program
{
    static void Main(string[] args)
    {
        List<Thread> threads = new List<Thread>();
        Thread thread;
        for (int i = 0; i < 7; i++)
        {
            thread = new Thread(new ParameterizedThreadStart(CalculateResults));
            thread.Start();
            threads.Add(thread);
        }

        // wait for all threads to finish
        for (int index = 0; index < threads.Count; index++)
        {
            threads[index].Join();
        }
    }

    static void CalculateResults(object obj)
    {
        Console.WriteLine("Thread number " + Thread.CurrentThread.ManagedThreadId + " is alive");
        Thread.Sleep(1000);
        Console.WriteLine("Thread number " + Thread.CurrentThread.ManagedThreadId + " is closing");
    }
}