c# - 实现循环时的故障排除

Question

我正在尝试创建一个 Sheduler（为了好玩），但它失败了。奇怪的是，当我以步进式调试时，我的程序工作正常，但是当我删除所有断点时，它在打印最后一个值后冻结。所以问题：为什么它会冻结？第二：我正在使用Thread.Resumeand Thread.Suspend，但它们被标记为已过时。我怎样才能避免它？

代码如下：

using System;
using System.Collections.Generic;
using System.Threading;

namespace ConsoleApplication143
{
    internal class Program
    {
        private static void Main()
        {
            var rrs = new RobinRoundSheduler(2, () =>
                                                {
                                                    for (int i = 0; i < 2; i++)
                                                    {
                                                        Console.WriteLine("{0} {1}", i,
                                                                          Thread.CurrentThread.ManagedThreadId);
                                                    }

                                                }) {TimeForTask = new TimeSpan(1)};
            rrs.Start();
            Console.ReadKey();
        }
    }


    internal class RobinRoundSheduler
    {
        private readonly LinkedList<Thread> _threads;
        public TimeSpan TimeForTask { get; set; }

        public RobinRoundSheduler(int taskCount, ThreadStart start)
        {
            TimeForTask = TimeSpan.FromSeconds(1);
            _threads = new LinkedList<Thread>();
            for (int i = 0; i < taskCount; i++)
            {
                _threads.AddLast(new Thread(start));
            }
        }

        public void Start()
        {
            while (_threads.Count > 0)
            {
                var list = new List<Thread>();
                foreach (var thread in _threads)
                {
                    lock (thread)
                    {
                        if (thread.ThreadState == ThreadState.Unstarted)
                            thread.Start();
                        else
                            thread.Resume();
                    }
                    thread.Join(TimeForTask);
                    lock (thread)
                    {
                        if (thread.ThreadState == ThreadState.Stopped || thread.ThreadState == ThreadState.Aborted)
                            list.Add(thread);
                        else
                        {
                            thread.Suspend();
                        }
                    }
                }
                list.ForEach(thread => _threads.Remove(thread));
            }
        }
    }
}

由于 Thread.Suspend() 方法似乎存在死锁问题，但我不知道在调用方法中不添加对 ManualResetEvents 的检查的情况下挂起线程的另一种选择。但我想调用方法对多线程一无所知。