class Program

    {

        static void Main(string[] args)

        {

            var count = ;

            var taskList = new Task[];

            Stopwatch sp = new Stopwatch();

            sp.Start();

            // 不要意外复制。每个实例都是独立的。

            SpinLock _spinLock = new SpinLock();

            for (int i = ; i < taskList.Length; i++)

            {

                taskList[i] = Task.Run(() =>

                {

                    bool _lock = false;

                    for (int j = ; j < 10_000_000; j++)

                    {

                        _spinLock.Enter(ref _lock);

                        count++;

                        _spinLock.Exit();

                        _lock = false;

                    }

                });

            }

            sp.Stop();

            Task.WaitAll(taskList);

            Console.WriteLine($"完成! 耗时:{sp.ElapsedTicks}");

            Console.WriteLine($"结果:{count}");

        }

    }