public void CreateInstanceWithDifferentFactories()
{
const int TEST_ITERATIONS = 1000000;
IFactory factory = null;
#region new
factory = new NewAccountFactory();
// create an instance so that Activators can
// cache the type/constructor/whatever
factory.CreateInstance(Type.EmptyTypes);
GC.Collect();
GC.WaitForPendingFinalizers();
Timer timer = new Timer();
timer.Start();
for (int i = 0; i < TEST_ITERATIONS; i++)
{
factory.CreateInstance(Type.EmptyTypes);
}
timer.Stop();
double newFactoryResult = 1000000 * (timer.Duration / (double)TEST_ITERATIONS);
#endregion
#region activator
factory = new ActivatorObjectFactory().CreateFactory(typeof(Account), Type.EmptyTypes);
// create an instance so that Activators can
// cache the type/constructor/whatever
factory.CreateInstance(Type.EmptyTypes);
GC.Collect();
GC.WaitForPendingFinalizers();
timer.Start();
for (int i = 0; i < TEST_ITERATIONS; i++)
{
factory.CreateInstance(Type.EmptyTypes);
}
timer.Stop();
double activatorFactoryResult = 1000000 * (timer.Duration / (double)TEST_ITERATIONS);
#endregion
#region Emit
factory = new EmitObjectFactory().CreateFactory(typeof(Account), Type.EmptyTypes);
// create an instance so that Activators can
// cache the type/constructor/whatever
factory.CreateInstance(Type.EmptyTypes);
GC.Collect();
GC.WaitForPendingFinalizers();
timer.Start();
for (int i = 0; i < TEST_ITERATIONS; i++)
{
factory.CreateInstance(Type.EmptyTypes);
}
timer.Stop();
double emitFactoryResult = 1000000 * (timer.Duration / (double)TEST_ITERATIONS);
#endregion
// Print results
Console.WriteLine(
"Create " + TEST_ITERATIONS.ToString() + " objects via factory :"
+ "\nNew : \t\t\t" + newFactoryResult.ToString("F3")
+ "\nActivator : \t\t" + activatorFactoryResult.ToString("F3")+ " Ratio : " + ((activatorFactoryResult / newFactoryResult)).ToString("F3")
+ "\nEmit IL : \t\t\t" + emitFactoryResult.ToString("F3") + " Ratio : " + ((emitFactoryResult / newFactoryResult)).ToString("F3"));
}
public void TestGetIntegerPerformance()
{
const int TEST_ITERATIONS = 1000000;
Property prop = new Property();
int test = -1;
Timer timer = new Timer();
#region Direct access (fastest)
GC.Collect();
GC.WaitForPendingFinalizers();
timer.Start();
for (int i = 0; i < TEST_ITERATIONS; i++)
{
test = -1;
test = prop.Int;
Assert.AreEqual(int.MinValue, test);
}
timer.Stop();
double directAccessDuration = 1000000 * (timer.Duration / (double)TEST_ITERATIONS);
#endregion
#region IL Property accessor
GC.Collect();
GC.WaitForPendingFinalizers();
IGetAccessorFactory factory = new GetAccessorFactory(true);
IGetAccessor propertyAccessor = factory.CreateGetAccessor(typeof(Property), "Int");
timer.Start();
for (int i = 0; i < TEST_ITERATIONS; i++)
{
test = -1;
test = (int)propertyAccessor.Get(prop);
Assert.AreEqual(int.MinValue, test);
}
timer.Stop();
double propertyAccessorDuration = 1000000 * (timer.Duration / (double)TEST_ITERATIONS);
double propertyAccessorRatio = propertyAccessorDuration / directAccessDuration;
#endregion
#region IBatisNet.Common.Utilities.Object.ReflectionInfo
GC.Collect();
GC.WaitForPendingFinalizers();
ReflectionInfo reflectionInfo = ReflectionInfo.GetInstance(prop.GetType());
timer.Start();
for (int i = 0; i < TEST_ITERATIONS; i++)
{
test = -1;
PropertyInfo propertyInfo = (PropertyInfo)reflectionInfo.GetGetter("Int");
test = (int)propertyInfo.GetValue(prop, null);
Assert.AreEqual(int.MinValue, test);
}
timer.Stop();
double reflectionInfoDuration = 1000000 * (timer.Duration / (double)TEST_ITERATIONS);
double reflectionInfoRatio = (float)reflectionInfoDuration / directAccessDuration;
#endregion
#region Reflection
GC.Collect();
GC.WaitForPendingFinalizers();
Type type = prop.GetType();
timer.Start();
for (int i = 0; i < TEST_ITERATIONS; i++)
{
test = -1;
PropertyInfo propertyInfo = type.GetProperty("Int", BindingFlags.Public | BindingFlags.SetProperty | BindingFlags.Instance);
test = (int)propertyInfo.GetValue(prop, null);
Assert.AreEqual(int.MinValue, test);
}
timer.Stop();
double reflectionDuration = 1000000 * (timer.Duration / (double)TEST_ITERATIONS);
double reflectionRatio = reflectionDuration / directAccessDuration;
#endregion
#region ReflectionInvokeMember (slowest)
GC.Collect();
GC.WaitForPendingFinalizers();
timer.Start();
for (int i = 0; i < TEST_ITERATIONS; i++)
{
test = -1;
test = (int)type.InvokeMember("Int",
BindingFlags.Public | BindingFlags.GetProperty | BindingFlags.Instance,
null, prop, null);
Assert.AreEqual(int.MinValue, test);
}
timer.Stop();
double reflectionInvokeMemberDuration = 1000000 * (timer.Duration / (double)TEST_ITERATIONS);
double reflectionInvokeMemberRatio = reflectionInvokeMemberDuration / directAccessDuration;
#endregion
// Print results
Console.WriteLine("{0} property gets on integer...", TEST_ITERATIONS);
Console.WriteLine("Direct access: \t\t{0} ", directAccessDuration.ToString("F3"));
Console.WriteLine("IMemberAccessor: \t\t{0} Ratio: {1}", propertyAccessorDuration.ToString("F3"), propertyAccessorRatio.ToString("F3"));
Console.WriteLine("IBatisNet ReflectionInfo: \t{0} Ratio: {1}", reflectionInfoDuration.ToString("F3"), reflectionInfoRatio.ToString("F3"));
Console.WriteLine("ReflectionInvokeMember: \t{0} Ratio: {1}", reflectionInvokeMemberDuration.ToString("F3"), reflectionInvokeMemberRatio.ToString("F3"));
Console.WriteLine("Reflection: \t\t\t{0} Ratio: {1}", reflectionDuration.ToString("F3"), reflectionRatio.ToString("F3"));
}
