用Task代替TheadPool

TheadPool的问题

1. 不支持线程的取消、完成、失败通知等交互性操作
2. 不支持线程执行先后次序

using System;

using System.Diagnostics;

using System.Threading;

using System.Threading.Tasks;

namespace ConsoleApplication1

{

    class Program

    {

        static void Main(string[] args)

        {

            var p = new Program();

            p.Task();

            Console.ReadKey();

            p.Signal();

            Console.ReadKey();

        }

        CancellationTokenSource cts = new CancellationTokenSource();

        void Task()

        {

            var random = new Random();

            for (int i = ; i < ; i++)

            {

                var worker = new Task(() =>

                {

                    while (true)

                    {

                        if (random.Next() %  == )

                        {

                            if (cts.IsCancellationRequested)

                            {

                                break;

                            }

                        }

                        else

                        {

                            cts.Token.ThrowIfCancellationRequested(); //异常取消

                        }

                        Thread.Sleep();

                    }

                });

                worker.Start();

                worker.ContinueWith(task =>

                {

                    Console.WriteLine("IsCancele={0},IsCompleted={1},IsFaulted={2}", task.IsCanceled, task.IsCompleted, task.IsFaulted);

                });

            }

        }

        void Signal()

        {

            cts.Cancel();

        }

    }

}