以简单代码来学习ASP.多线程同步

本资料来自网络，未经本站测试，不过可以看下，.net多线程的经典学习代码，本资料有两个方面：

1、用到了多线程的同步问题。
2、用到了多线程的顺序问题。

请注意以下其中代码段的顺序，思考一下，这些代码的顺序能否互相调换，为什么？这应该对学习很有帮助的。为了演示，让所有的线程都Sleep了一段时间。

using System.Net;
using System;
using System.IO;
using System.Text;
using System.Threading;
using System.Diagnostics;

namespace Webb.Study
{
    class TestThread
    {
        static Mutex m_Mutex            = new Mutex();
        static Thread[] m_testThreads    = new Thread[10];
        static int m_threadIndex        = 0;

        static void ThreadCallBack()
        {
            TestThread.m_Mutex.WaitOne();
            int m_index    = m_threadIndex;
            TestThread.m_Mutex.ReleaseMutex();
            Console.WriteLine("Thread {0} start.",m_index);
            for(int i=0;i<=10;i++)
            {
                TestThread.m_Mutex.WaitOne();    
                Console.WriteLine("Thread {0}: is running. {1}",m_index,i);
                TestThread.m_Mutex.ReleaseMutex();
                Thread.Sleep(100);
            }
            Console.WriteLine("Thread {0} end.",m_index);
        }

        public static void Main(String[] args)
        {
            Console.WriteLine("Main thread start.");
            for(int i=0;i<TestThread.m_testThreads.Length;i++)
            {
                TestThread.m_threadIndex    = i;
                TestThread.m_testThreads[i]    = new Thread(new ThreadStart(ThreadCallBack));               
                TestThread.m_testThreads[i].Start();
                Thread.Sleep(100);
            }
            for(int i=0;i<TestThread.m_testThreads.Length;i++)
            {
                TestThread.m_testThreads[i].Join();
            }
            Console.WriteLine("Main thread exit.");
        }
    }
}