c#线程池ThreadPool实例详解

1. 如何查看线程池的最大线程数和最小线程数

        static void Main(string[] args)
        {
            Console.WriteLine("----------线程池开始，线程ID是{0}-----------------", Thread.CurrentThread.ManagedThreadId);

            int workthread;
            int iothread;

            ThreadPool.GetMaxThreads(out workthread, out iothread);
            Console.WriteLine("Max Work Thread:{0} Max I/O Thread:{1}",workthread,iothread);

            ThreadPool.GetMinThreads(out workthread, out iothread);
            Console.WriteLine("Mix Work Thread:{0} Mix I/O Thread:{1}", workthread, iothread);

            Console.WriteLine("----------线程池结束，线程ID是{0}-----------------", Thread.CurrentThread.ManagedThreadId);

            Console.Read();
        }

2. 如何设置线程池的最大线程数和最小线程数

        static void Main(string[] args)
        {
            Console.WriteLine("----------线程池开始，线程ID是{0}-----------------", Thread.CurrentThread.ManagedThreadId);

            int workthread = 8;
            int iothread = 8;

            ThreadPool.SetMaxThreads(workthread, iothread);
            Console.WriteLine("Max Work Thread:{0} Max I/O Thread:{1}",workthread,iothread);

            ThreadPool.SetMinThreads(workthread, iothread);
            Console.WriteLine("Mix Work Thread:{0} Mix I/O Thread:{1}", workthread, iothread);

            Console.WriteLine("----------线程池结束，线程ID是{0}-----------------", Thread.CurrentThread.ManagedThreadId);

            Console.Read();
        }

3. ThreadPool线程启动

        static void Main(string[] args)
        {
            Console.WriteLine("----------线程池开始，线程ID是{0}-----------------", Thread.CurrentThread.ManagedThreadId);

            for (int i = 0; i < 5; i++)
            {
                string name = string.Format("ThreadPool_{0}", i);
                WaitCallback method = (t) => Program.TestThread(t.ToString());
                ThreadPool.QueueUserWorkItem(method,name);
            }

            Console.WriteLine("----------线程池结束，线程ID是{0}-----------------", Thread.CurrentThread.ManagedThreadId);

            Console.Read();
        }

        static void TestThread(string name)
        {
            Console.WriteLine("TestThread Start name:{0} 当前线程id:{1} 当前时间:{2}", name, Thread.CurrentThread.ManagedThreadId, DateTime.Now.ToString("yy-MM-dd hh:mm:ss.fff"));

            long sum = 0;

            for (int i = 0; i < 10000000; i++)
            {
                sum += i;
            }

            Console.WriteLine("TestThread End name:{0} 当前线程id:{1} 当前时间:{2}", name, Thread.CurrentThread.ManagedThreadId, DateTime.Now.ToString("yy-MM-dd hh:mm:ss.fff"));
        }

4. ThreadPool线程回收

ThreadPool线程池会自动回收。

5. ThreadPool线程池等待

可以通过ManualResetEvent信号量来实现，代码如下：

6. ThreadPool返回值

没有提供方法，可以自己定义，代码如下：

7. ThreadPool回调方法

没有提供方法，可以自己定义，代码如下：