Mutex和AutoResetEvent综合例子（总结）

Mutex的wait和release必须成对出现，如果在一个类中调用mutex的wait方法没有release，则会报AbandonedMutexException错误
 Mutex对象等待互斥对象的方法有：Mutex.WaitAll、WaitOne、Mutex.WaitAny
 每个对象的release方法略有区别
   
     方法如下
     * （1）、WaitOne()


Mutex gM1=new Mutex();


gM1.WaitOne();//等待gM1的释放


gM1的释放为：


gM1.ReleaseMutex();


（2）、WaitAll()


Mutex[] gMs = new Mutex[2];


gMs[0] = gM1;


gMs[1] = gM2;


Mutex.WaitAll(gMs); //等待gM1和gM2的释放


for (int i = 0; i < gMs.Length; i++)


{


gMs[0].ReleaseMutex();


}


（3）、WaitAny()


Mutex[] gMs = new Mutex[2];


gMs[0] = gM1;


gMs[1] = gM2;


int index = Mutex.WaitAny(gMs); //等待数组中任意一个Mutex对象被释放

gMs[index].ReleaseMutex();

/* 下面的代码使用了 AutoResetEvent和mutex     * T2和T3方法完成触发 mutex1释放，T1和T4完成触发mutex2释放。所有的AutoResetEvent完成，触发WaitHandle.WaitAll(evs);*/    class Program    {       static Mutex gM1;       static  Mutex gM2;      static AutoResetEvent event1 = new AutoResetEvent(false);      static AutoResetEvent event2 = new AutoResetEvent(false);      static AutoResetEvent event3 = new AutoResetEvent(false);      static AutoResetEvent event4 = new AutoResetEvent(false);       static void Main(string[] args)        {            gM1 = new Mutex(true);            // 如果是true则表示拥有互斥体的所有权，false表示不拥有互斥体的所有权。            gM2 = new Mutex(true);            AutoResetEvent[] evs = new AutoResetEvent[4];            evs[0] = event1;    // Event for t1            evs[1] = event2;    // Event for t2            evs[2] = event3;    // Event for t3            evs[3] = event4;    // Event for t4            Program tm = new Program();            Thread thread1 = new Thread(new ThreadStart(tm.t1Start));            Thread thread2 = new Thread(new ThreadStart(tm.t2Start));            Thread thread3 = new Thread(new ThreadStart(tm.t3Start));            Thread thread4 = new Thread(new ThreadStart(tm.t4Start));            thread1.Start();   // Does Mutex.WaitAll(Mutex[] of gM1 and gM2)            thread2.Start();   // Does Mutex.WaitOne(Mutex gM1)            thread3.Start();   // Does Mutex.WaitAny(Mutex[] of gM1 and gM2)            thread4.Start();   // Does Mutex.WaitOne(Mutex gM2)            Thread.Sleep(2000);            Console.WriteLine(" - Main releases gM1");            gM1.ReleaseMutex();  // t2 and t3 will end and signal            Thread.Sleep(1000);            Console.WriteLine(" - Main releases gM2");            gM2.ReleaseMutex();  // t1 and t4 will end and signal            // Waiting until all four threads signal that they are done.            WaitHandle.WaitAll(evs);            Console.WriteLine("... Mutex Sample");            Console.ReadLine();        }       public void t1Start()       {           Console.WriteLine("t1Start started,  Mutex.WaitAll(Mutex[])");           Mutex[] gMs = new Mutex[2];           gMs[0] = gM1;  // Create and load an array of Mutex for WaitAll call            gMs[1] = gM2;           Mutex.WaitAll(gMs);  // Waits until both gM1 and gM2 are released             Thread.Sleep(2000);           Console.WriteLine("t1Start finished, Mutex.WaitAll(Mutex[]) satisfied");           event1.Set();      // AutoResetEvent.Set() flagging method is done           gM1.ReleaseMutex();           gM2.ReleaseMutex();       }       public void t2Start()       {           Console.WriteLine("t2Start started,  gM1.WaitOne( )");           gM1.WaitOne();    // Waits until Mutex gM1 is released ---errors is here---               Console.WriteLine("t2Start finished, gM1.WaitOne( ) satisfied");           gM1.ReleaseMutex();           event2.Set();     // AutoResetEvent.Set() flagging method is done       }       public void t3Start()       {           Console.WriteLine("t3Start started,  Mutex.WaitAny(Mutex[])");           Mutex[] gMs = new Mutex[2];           gMs[0] = gM1;  // Create and load an array of Mutex for WaitAny call             gMs[1] = gM2;           int result = Mutex.WaitAny(gMs);  // Waits until either Mutex is released             gMs[result].ReleaseMutex();           Console.WriteLine("t3Start finished, Mutex.WaitAny(Mutex[])");           event3.Set();       // AutoResetEvent.Set() flagging method is done       }       public void t4Start()       {           Console.WriteLine("t4Start started,  gM2.WaitOne( )");           gM2.WaitOne();   // Waits until Mutex gM2 is released              Console.WriteLine("t4Start finished, gM2.WaitOne( )");           event4.Set();    // AutoResetEvent.Set() flagging method is done           gM2.ReleaseMutex();       }    }