static void Main(string[] args)
{
Console.WriteLine($"Singleton");
Enumerable.Range(1, 5).Select(
i => Task.Run(() =>
{
Console.WriteLine($"{Singleton.GetInstance().GetHashCode()}");
})
).ToList();
//Enumerable.Range(1, 100).AsParallel().ForAll(i => { Console.WriteLine(i); });
Console.WriteLine($"Singleton1");
Enumerable.Range(1, 5).Select(i => Task.Run(() =>
{
Console.WriteLine($"{Singleton1.GetInstance().GetHashCode()}");
})).ToList();
Console.WriteLine($"Singleton2");
Enumerable.Range(1, 5).Select(i => Task.Run(() =>
{
Console.WriteLine($"{Singleton2.GetInstance().GetHashCode()}");
})).ToList();
Console.WriteLine($"Singleton3");
var ss = Enumerable.Range(1, 5).Select(i => Task.Run(() =>
{
Console.WriteLine($"{Singleton3.GetInstance().GetHashCode()}");
})).ToList();
Console.ReadLine();
}
public void TestSingleton3()
{
var instance1 = Singleton3.GetInstance();
Assert.IsNotNull(instance1);
var instance2 = Singleton3.GetInstance();
Assert.AreSame(instance1, instance2);
}
public void GetInstanceTest()
{
for (int i = 0; i < 5; i++)
{
int threadCount = 10000;
Task <int>[] tasks = new Task <int> [threadCount];
for (int j = 0; j < threadCount; j++)
{
tasks[j] = Task.Run <int>(() =>
{
return(Singleton3.GetInstance().GetHashCode());
});
}
Task.WaitAll(tasks);
var codes = tasks.Select(t => t.Result).Distinct();
Assert.AreEqual(codes.Count(), 1, $"Singleton3非单例 {codes.Count()}");
}
}
public static void TestInstanceProfile()
{
int count = 100000;
long es = 0;
var watch = Stopwatch.StartNew();
for (int i = 0; i < count; i++)
{
var va = Singleton1.GetInstance();
}
watch.Stop();
es = watch.ElapsedTicks;
Console.WriteLine($"1 耗时 {es}");
watch.Restart();
for (int i = 0; i < count; i++)
{
var va = Singleton2.GetInstance();
}
watch.Stop();
es = watch.ElapsedTicks;
Console.WriteLine($"2 耗时 {es}");
watch.Restart();
for (int i = 0; i < count; i++)
{
var va = Singleton3.GetInstance();
}
watch.Stop();
es = watch.ElapsedTicks;
Console.WriteLine($"3 耗时 {es}");
watch.Restart();
for (int i = 0; i < count; i++)
{
var va = Singleton4.GetInstance();
}
watch.Stop();
es = watch.ElapsedTicks;
Console.WriteLine($"4 耗时 {es}");
}