C#이 멀티스레딩에서 스레드 안전성을 보장하는 방법을 공유하세요.

 private static bool _isOK = false;
        //lock只能锁定一个引用类型变量
        private static object _lock = new object();
        static void MLock()
        {
            //多线程
            new System.Threading.Thread(Done).Start();
            new System.Threading.Thread(Done).Start();
            Console.ReadLine();
        }
        static void Done()
        {
            //lock只能锁定一个引用类型变量
            lock (_lock)
            {
                if (!_isOK)
                {
                    Console.WriteLine("OK");
                    _isOK = true;
                }
            }
        }

public static class AsynAndAwait
{
        //step 1 
        private static int count = 0;
        //用async和await保证多线程下静态变量count安全
        public async static void M1()
        {
            //async and await将多个线程进行串行处理
            //等到await之后的语句执行完成后
            //才执行本线程的其他语句
            //step 2
            await Task.Run(new Action(M2));
            Console.WriteLine("Current Thread ID is {0}", System.Threading.Thread.CurrentThread.ManagedThreadId);
            //step 6
            count++;
            //step 7
            Console.WriteLine("M1 Step is {0}", count);
        }
        public static void M2()
        {
            Console.WriteLine("Current Thread ID is {0}", System.Threading.Thread.CurrentThread.ManagedThreadId);
            //step 3
            System.Threading.Thread.Sleep(3000);
            //step 4
            count++;
            //step 5
            Console.WriteLine("M2 Step is {0}", count);
        }
}