简单线程系列1-最简单的线程池

using System;
using System.Threading;

namespace ConsoleApplication1
{
    static class Program
    {
        static int _count;
        private const int Max = 1000;
        static void Main()
        {
            ThreadPool.SetMaxThreads(3, 3);
            for (int i = 0; i < Max; i++)
            {
                ThreadPool.QueueUserWorkItem(Oper, i);
            }
            while (_count < Max)
                Thread.Sleep(50);
            Console.WriteLine("{0}\tcount={1}", DateTime.Now.ToString("mm:ss:fff"), _count);
            int workerthread = -1;
            int streamthread = -1;
            ThreadPool.GetAvailableThreads(out workerthread, out streamthread);
            Console.WriteLine("{0}\tworkerthread={1}\tstreamthread={2}", DateTime.Now.ToString("mm:ss:fff"), workerthread, streamthread);
            Console.ReadLine();
        }
        static void Oper(object obj)
        {
            int i = (int)obj;
            Console.WriteLine("{0}\t执行结果{1}", DateTime.Now.ToString("mm:ss:fff"), i);
            _count++;
        }
    }
}

简单解释一下，开3个线程，执行1000个任务。

最终的空闲线程还是3个。

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