死锁现象

static void Main()
{
    myObject1 = new object();
    myObject2 = new object();
    new Thread(Test1).Start();
    new Thread(Test2).Start();
    Console.ReadKey();
}

private static void Test1()
{
    while (true)
    {
        lock (myObject1)
        {
            lock (myObject2)
            {
                myObject1 = 1;
                Console.WriteLine(myObject1.ToString());
                myObject2 = 1;
                Console.WriteLine(myObject2.ToString());
            }
        }
    }
}

private static void Test2()
{
    while (true)
    {
        lock (myObject2)
        {
            lock (myObject1)
            {
                myObject1 = 2;
                Console.WriteLine(myObject1.ToString());
                myObject2 = 2;
                Console.WriteLine(myObject2.ToString());
            }
        }
    }
}

为了避免死锁,可以在应用程序的体系架构中一开始就设计好锁定顺序,也可以为锁定定义超时时间