ReaderWriterLock

对于共享资源

 

ReaderWriterLock旨在实现多线程同时读， 单线程写

 

即读线程获取共享锁， 写线程获取排他锁

 

        static List<string> list = new List<string>();  //共享资源
        static ReaderWriterLock rwl = new ReaderWriterLock();

 

        static void fn()
        {
            rwl.AcquireReaderLock(2000);
            Console.WriteLine(list.Count);
            rwl.ReleaseReaderLock();       
        }

 

 

 

        static void fn1()
        {
            rwl.AcquireWriterLock(2000);
            list.Add("ddd");
            rwl.ReleaseWriterLock();
        }

 

        main:

 

                ThreadStart s1 = new ThreadStart(fn);
                new Thread(s1).Start();


                ThreadStart s2 = new ThreadStart(fn1);
                new Thread(s2).Start();


                new Thread(s1).Start();
                new Thread(s1).Start();