C# 任务、线程、同步（三）

线程池使用, 线程池中线程均为后台线程

static void Main()
        {
            int nWorkerThreads;
            int nCompletionPortThreads;
            ThreadPool.GetMaxThreads(out nWorkerThreads, out nCompletionPortThreads);
            Console.WriteLine("Max worker threads: {0}, I/O completion threads: {1}", nWorkerThreads, nCompletionPortThreads);

            for (int i = 0; i < 5; i++)
            {
                ThreadPool.QueueUserWorkItem(JobForAThread);

            }

            Thread.Sleep(3000);
        }


        static void JobForAThread(object state)
        {
            for (int i = 0; i < 3; i++)
            {
                Console.WriteLine("loop {0}, running inside pooled thread {1}", i,
                   Thread.CurrentThread.ManagedThreadId);
                Thread.Sleep(50);
            }

        }

Thread类使用

 static void Main(string[] args)
        {
            //定义、启动线程
            var t1 = new Thread(ThreadMain1);
            t1.Start();
            Console.WriteLine("This is the main thread.{0}",Thread.CurrentThread.ManagedThreadId);

            var t2 = new Thread(() => Console.WriteLine(" running is a thread, id {0}", Thread.CurrentThread.ManagedThreadId));
            t2.Start();
            Console.WriteLine("This is the main thread , id {0}", Thread.CurrentThread.ManagedThreadId);

            //线程传参
            var d = new Data { Message = "Info" };
            var t3 = new Thread(ThreadMainWithParameters);
            t3.Start(d);

            //后台线程
            var t4 = new Thread(ThreadMain2) { Name = "MyNewThread1", IsBackground = true, Priority = ThreadPriority.Highest };
            t4.Start();
            Console.WriteLine("Main thread ending now.");

   
            Console.Read();
        }

        static void ThreadMain1()
        {
            Console.WriteLine("Running in a thread.{0}", Thread.CurrentThread.ManagedThreadId);
        }
        static void ThreadMainWithParameters(object o)
        {
            Data d = (Data)o;
            Console.WriteLine("Running in a thread ,received {0}", d.Message);
        }
        static void ThreadMain2()
        {
            Console.WriteLine("Thread {0} started", Thread.CurrentThread.Name);
            Thread.Sleep(3000);
            // Console.WriteLine("Running in the thread {0}, id: {1}.", Thread.CurrentThread.Name, Thread.CurrentThread.ManagedThreadId);
            Console.WriteLine("Thread {0} completed", Thread.CurrentThread.Name);
        }


        public struct Data
        {
            public string Message;
        }