public void PerformanceReportWithNoArguments()
        {
            int count = 1000000;

            Trace.WriteLine($"#{count} 次调用:");



            double time = StopwatchHelper.Calculate(count, () => {
                ClassB b = new ClassB();
            }).TotalMilliseconds;

            Trace.WriteLine($"‘New’耗时 {time} milliseconds");



            double time2 = StopwatchHelper.Calculate(count, () => {
                ClassB b = CreateObjectFactory.CreateInstance2 <ClassB>();
            }).TotalMilliseconds;

            Trace.WriteLine($"‘Emit 工厂’耗时 {time2} milliseconds");



            double time3 = StopwatchHelper.Calculate(count, () => {
                ClassB b = ExpressionCreateObject.CreateInstance <ClassB>();
            }).TotalMilliseconds;

            Trace.WriteLine($"‘Expression’耗时 {time3} milliseconds");



            double time4 = StopwatchHelper.Calculate(count, () => {
                ClassB b = ExpressionCreateObjectFactory.CreateInstance <ClassB>();
            }).TotalMilliseconds;

            Trace.WriteLine($"‘Expression 工厂’耗时 {time4} milliseconds");



            double time5 = StopwatchHelper.Calculate(count, () => {
                ClassB b = Activator.CreateInstance <ClassB>();

                //ClassB b = Activator.CreateInstance(typeof(ClassB)) as ClassB;
            }).TotalMilliseconds;

            Trace.WriteLine($"‘Activator.CreateInstance’耗时 {time5} milliseconds");



            /**
             *
             #1000000 次调用:
             *
             *  ‘New’耗时 21.7474 milliseconds
             *
             *  ‘Emit 工厂’耗时 174.088 milliseconds
             *
             *  ‘Expression’耗时 42.9405 milliseconds
             *
             *  ‘Expression 工厂’耗时 162.548 milliseconds
             *
             *  ‘Activator.CreateInstance’耗时 67.3712 milliseconds
             *
             * */
        }
Beispiel #2
0
 public ClassA(ClassB classB)
 {
 }
        public void NoArguments()
        {
            ClassB b = CreateObjectFactory.CreateInstance <ClassB>();

            Assert.AreEqual(default(int), b.GetInt());
        }