public void TestCreateObjects()
{
const int total = 100000;
object[] resultArray = new object[total];
long time;
Stopwatch sw = Stopwatch.StartNew();
for (int i = 0; i < total; i++)
{
resultArray[i] = Activator.CreateInstance(typeof (TestClassX));
}
time = sw.ElapsedTicks;
Console.WriteLine("Activator.CreateInstance: " + time);
GC.Collect();
sw.Restart();
for (int i = 0; i < total; i++)
{
resultArray[i] = new TestClassX();
}
time = sw.ElapsedTicks;
Console.WriteLine("Static C#: " + time);
GC.Collect();
var ci = typeof(TestClassX).GetConstructor(new Type[0]);
DynamicMethod dm = new DynamicMethod("ctor", typeof(TestClassX), new Type[0]);
var ilgen = dm.GetILGenerator();
ilgen.Emit(OpCodes.Newobj, ci);
ilgen.Emit(OpCodes.Ret);
Func<TestClassX> ctorFunc = (Func<TestClassX>)dm.CreateDelegate(typeof(Func<TestClassX>));
sw.Restart();
for (int i = 0; i < total; i++)
{
resultArray[i] = ctorFunc();
}
time = sw.ElapsedTicks;
Console.WriteLine("DynamicMethod: " + time);
GC.Collect();
var newExpr = Expression.New(typeof (TestClassX));
var del2 = Expression.Lambda<Func<object>>(newExpr).Compile();
sw.Restart();
for (int i = 0; i < total; i++)
{
resultArray[i] = del2();
}
time = sw.ElapsedTicks;
Console.WriteLine("Expression.New (untyped): " + time);
GC.Collect();
var del = Expression.Lambda<Func<TestClassX>>(newExpr).Compile();
sw.Restart();
for (int i = 0; i < total; i++)
{
resultArray[i] = del();
}
time = sw.ElapsedTicks;
Console.WriteLine("Expression.New (typed): " + time);
GC.Collect();
}
public void TestCreateObjects()
{
const int total = 100000;
object[] resultArray = new object[total];
long time;
Stopwatch sw = Stopwatch.StartNew();
for (int i = 0; i < total; i++)
{
resultArray[i] = Activator.CreateInstance(typeof(TestClassX));
}
time = sw.ElapsedTicks;
Console.WriteLine("Activator.CreateInstance: " + time);
GC.Collect();
sw.Restart();
for (int i = 0; i < total; i++)
{
resultArray[i] = new TestClassX();
}
time = sw.ElapsedTicks;
Console.WriteLine("Static C#: " + time);
GC.Collect();
var ci = typeof(TestClassX).GetConstructor(new Type[0]);
DynamicMethod dm = new DynamicMethod("ctor", typeof(TestClassX), new Type[0]);
var ilgen = dm.GetILGenerator();
ilgen.Emit(OpCodes.Newobj, ci);
ilgen.Emit(OpCodes.Ret);
Func <TestClassX> ctorFunc = (Func <TestClassX>)dm.CreateDelegate(typeof(Func <TestClassX>));
sw.Restart();
for (int i = 0; i < total; i++)
{
resultArray[i] = ctorFunc();
}
time = sw.ElapsedTicks;
Console.WriteLine("DynamicMethod: " + time);
GC.Collect();
var newExpr = Expression.New(typeof(TestClassX));
var del2 = Expression.Lambda <Func <object> >(newExpr).Compile();
sw.Restart();
for (int i = 0; i < total; i++)
{
resultArray[i] = del2();
}
time = sw.ElapsedTicks;
Console.WriteLine("Expression.New (untyped): " + time);
GC.Collect();
var del = Expression.Lambda <Func <TestClassX> >(newExpr).Compile();
sw.Restart();
for (int i = 0; i < total; i++)
{
resultArray[i] = del();
}
time = sw.ElapsedTicks;
Console.WriteLine("Expression.New (typed): " + time);
GC.Collect();
}
