public void TestSetIntegerPerformance()
{
const int TEST_ITERATIONS = 1000000;
Property prop = new Property();
int value = 123;
Timer timer = new Timer();
#region Direct access (fastest)
GC.Collect();
GC.WaitForPendingFinalizers();
timer.Start();
for (int i = 0; i < TEST_ITERATIONS; i++)
{
prop.Int = value;
}
timer.Stop();
double directAccessDuration = 1000000 * (timer.Duration / (double)TEST_ITERATIONS);
#endregion
#region Property accessor
GC.Collect();
GC.WaitForPendingFinalizers();
ISetAccessorFactory factory = new SetAccessorFactory(true);
ISetAccessor propertyAccessor = factory.CreateSetAccessor(typeof(Property), "Int");
timer.Start();
for (int i = 0; i < TEST_ITERATIONS; i++)
{
propertyAccessor.Set(prop, value);
}
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();
Type type = prop.GetType();
ReflectionInfo reflectionInfo = ReflectionInfo.GetInstance(type);
timer.Start();
for (int i = 0; i < TEST_ITERATIONS; i++)
{
PropertyInfo propertyInfo = (PropertyInfo)reflectionInfo.GetSetter("Int");
propertyInfo.SetValue(prop, value, null);
}
timer.Stop();
double reflectionInfoDuration = 1000000 * (timer.Duration / (double)TEST_ITERATIONS);
double reflectionInfoRatio = reflectionInfoDuration / directAccessDuration;
#endregion
#region Reflection
GC.Collect();
GC.WaitForPendingFinalizers();
timer.Start();
for (int i = 0; i < TEST_ITERATIONS; i++)
{
PropertyInfo propertyInfo = type.GetProperty("Int", BindingFlags.Public | BindingFlags.SetProperty | BindingFlags.Instance);
propertyInfo.SetValue(prop, value, null);
}
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++)
{
type.InvokeMember("Int",
BindingFlags.Public | BindingFlags.SetProperty | BindingFlags.Instance,
null, prop, new object[] { value });
}
timer.Stop();
double reflectionInvokeMemberDuration = 1000000 * (timer.Duration / (double)TEST_ITERATIONS);
double reflectionInvokeMemberRatio = reflectionInvokeMemberDuration / directAccessDuration;
#endregion
// Print results
Console.WriteLine("{0} property sets 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"));
}
