private static void MultiThreadingEx()
{
Thread t1 = new Thread(
new ThreadStart(() =>
{
for (int i = 0; i < 3; i++)
{
SingletonA.GetInstance();
Console.WriteLine("H1: " + SingletonA.Mensaje);
//Thread.Sleep(1000);
var instanciasinglemth1 = SingletonLazy.Instance;
//Console.WriteLine("H1: " + SingletonLazy.Mensaje);
//Thread.Sleep(1000);
}
}));
Thread t2 = new Thread(
new ThreadStart(() =>
{
for (int i = 0; i < 3; i++)
{
SingletonA.GetInstance();
Console.WriteLine("H2: " + SingletonA.Mensaje);
//Thread.Sleep(1000);
var instanciasinglemth1 = SingletonLazy.Instance;
//Console.WriteLine("H2: " + SingletonLazy.Mensaje);
// Thread.Sleep(1000);
}
}));
t1.Start();
t2.Start();
}
public void Test_Inherence_OfChildrens_ChildrensAre_Not_TheSame()
{
SingletonA <SingletonB> firstSon = SingletonB.Instance;
SingletonA <SingletonB> secondSon = SingletonB.Instance;
SingletonA <SingletonC> firstDaughter = SingletonC.Instance;
SingletonA <SingletonC> secondDaughter = SingletonC.Instance;
Assert.AreNotSame(firstSon, firstDaughter);
}
public void Test_Inherence_Of_Childrens()
{
SingletonA <SingletonB> firstSon = SingletonB.Instance;
SingletonA <SingletonB> secondSon = SingletonB.Instance;
SingletonA <SingletonC> firstDaughter = SingletonC.Instance;
SingletonA <SingletonC> secondDaughter = SingletonC.Instance;
Assert.AreSame(firstSon, secondSon);
Assert.AreSame(firstDaughter, secondDaughter);
}
public static SingletonA GetInstance()
{
if (_instancia == null)
{
_instancia = new SingletonA();
Mensaje = "Se ha creado una instancia de SA.";
}
else
{
Mensaje = string.Empty;
}
return(_instancia);
}
public static SingletonA GetSingletonA()
{
if (singletonA == null)
{
lock (_object)
{
if (singletonA == null)
{
singletonA = new SingletonA();
}
}
}
return(singletonA);
}
public void Test()
{
/// 使用传统Singleton方式访问，一样可以保证唯一性
SingletonA sa1 = SingletonA.Instance;
SingletonA sa2 = SingletonA.Instance;
Assert.AreEqual <int>(sa1.GetHashCode(), sa2.GetHashCode());
/// 也可以绕过Instance静态属性，直接实例化那些准Singleton类型
SingletonA sa3 = new SingletonA();
Assert.IsNotNull(sa3);
Assert.AreNotEqual <int>(sa1.GetHashCode(), sa3.GetHashCode());
}
static void Main(string[] args)
{
//三次打印相同的hashcode 使用的同一个实例
for (int i = 0; i < 3; i++)
{
//饿汉
SingletonA singletonA = SingletonA.GetInstance();
singletonA.PrintMsg();
}
//三次打印相同的hashcode 使用的同一个实例
for (int i = 0; i < 3; i++)
{
//懒汉
SingletonB singletonB = SingletonB.GetInstance();
singletonB.PrintMsg();
}
Console.ReadKey();
}
