public void PerformanceReportWithNoArguments(int count)
{
Trace.WriteLine($"#{count} 次调用:");
double time = StopwatchHelper.Caculate(count, () =>
{
ClassB b = new ClassB();
}).TotalMilliseconds;
Trace.WriteLine($"‘New’耗时 {time} milliseconds");
double time2 = StopwatchHelper.Caculate(count, () =>
{
ClassB b = CreateObjectFactory.CreateInstance <ClassB>();
}).TotalMilliseconds;
Trace.WriteLine($"‘Emit 工厂’耗时 {time2} milliseconds");
double time3 = StopwatchHelper.Caculate(count, () =>
{
ClassB b = ExpressionCreateObject.CreateInstance <ClassB>();
}).TotalMilliseconds;
Trace.WriteLine($"‘Expression’耗时 {time3} milliseconds");
double time4 = StopwatchHelper.Caculate(count, () =>
{
ClassB b = ExpressionCreateObjectFactory.CreateInstance <ClassB>();
}).TotalMilliseconds;
Trace.WriteLine($"‘Expression 工厂’耗时 {time4} milliseconds");
double time5 = StopwatchHelper.Caculate(count, () =>
{
ClassB b = Activator.CreateInstance <ClassB>();
//ClassB b = Activator.CreateInstance(typeof(ClassB)) as ClassB;
}).TotalMilliseconds;
Trace.WriteLine($"‘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
* */
}
public void PerformanceReportWithArguments(int count)
{
Trace.WriteLine($"#{count} 次调用:");
double time = StopwatchHelper.Caculate(count, () =>
{
ClassA a = new ClassA(new ClassB());
}).TotalMilliseconds;
Trace.WriteLine($"‘New’耗时 {time} milliseconds");
double time2 = StopwatchHelper.Caculate(count, () =>
{
ClassA a = CreateObjectFactory.CreateInstance <ClassA>(new ClassB());
}).TotalMilliseconds;
Trace.WriteLine($"‘Emit 工厂’耗时 {time2} milliseconds");
double time4 = StopwatchHelper.Caculate(count, () =>
{
ClassA a = ExpressionCreateObjectFactory.CreateInstance <ClassA>(new ClassB());
}).TotalMilliseconds;
Trace.WriteLine($"‘Expression 工厂’耗时 {time4} milliseconds");
double time5 = StopwatchHelper.Caculate(count, () =>
{
ClassA a = Activator.CreateInstance(typeof(ClassA), new ClassB()) as ClassA;
}).TotalMilliseconds;
Trace.WriteLine($"‘Activator.CreateInstance’耗时 {time5} milliseconds");
/**
#1000000 次调用:
* ‘New’耗时 29.3612 milliseconds
* ‘Emit 工厂’耗时 634.2714 milliseconds
* ‘Expression 工厂’耗时 620.2489 milliseconds
* ‘Activator.CreateInstance’耗时 588.0409 milliseconds
* */
}
public void ExpressionType()
{
var instance = ExpressionCreateObjectFactory.CreateInstance <ClassB>();
Assert.Equal(default(int), instance.GetInt());
}