public void SafeFieldPerformanceTests()
{
int runs = 10000000;
object myClass = new MyClassWithPrivateFields(123, new object(), 456, new object());
FieldInfo fieldClassRefValue = IField(myClass.GetType(), "instanceRefValue");
FieldInfo fieldClassVtValue = IField(myClass.GetType(), "instanceVTValue");
StopWatch stopWatch = new StopWatch();
using (stopWatch.Start("Duration Class Set/Get field value: {0}"))
{
for (int i = 0; i < runs; i++)
{
SafeField instanceRefField = new SafeField(fieldClassRefValue);
SafeField instanceVtField = new SafeField(fieldClassVtValue);
int res = (int)instanceVtField.GetValue(myClass);
object ores = instanceRefField.GetValue(myClass);
}
}
object myStruct = new MyStructWithPrivateFields(123, new object(), 456, new object());
FieldInfo fieldStructRefValue = IField(myStruct.GetType(), "instanceRefValue");
FieldInfo fieldStructVtValue = IField(myStruct.GetType(), "instanceVTValue");
using (stopWatch.Start("Duration Struct Set/Get field value: {0}"))
{
for (int i = 0; i < runs; i++)
{
SafeField instanceRefField = new SafeField(fieldStructRefValue);
SafeField instanceVtField = new SafeField(fieldStructVtValue);
int res = (int)instanceVtField.GetValue(myStruct);
object ores = instanceRefField.GetValue(myStruct);
}
}
/* on my machine prints
*
* with System.Reflection.Emit.DynamicMethod generated code:
* Duration Class Set/Get field value: 00:00:03.2031250
* Duration Struct Set/Get field value: 00:00:03.5625000
*
* with standard reflection:
* Duration Class Set/Get field value: 00:00:45.4218750
* Duration Struct Set/Get field value: 00:00:44.5312500
*
*/
}
public void TestInstanceMembersOfClass()
{
object testref1 = new object();
object testref2 = new object();
MyClassWithPrivateFields myClass;
// ro readonly int
myClass = new MyClassWithPrivateFields(123, testref1, 456, testref2);
SafeField instanceReadonlyVtField = new SafeField(IField(myClass.GetType(), "instanceReadonlyVTValue"));
Assert.AreEqual(123, instanceReadonlyVtField.GetValue(myClass));
try { instanceReadonlyVtField.SetValue(myClass, 10); }
catch (InvalidOperationException) { }
// ro readonly object
myClass = new MyClassWithPrivateFields(123, testref1, 456, testref2);
SafeField instanceReadonlyRefField = new SafeField(IField(myClass.GetType(), "instanceReadonlyRefValue"));
Assert.AreSame(testref1, instanceReadonlyRefField.GetValue(myClass));
try { instanceReadonlyRefField.SetValue(myClass, this); }
catch (InvalidOperationException) { }
// rw int
myClass = new MyClassWithPrivateFields(123, testref1, 456, testref2);
SafeField instanceVtField = new SafeField(IField(myClass.GetType(), "instanceVTValue"));
Assert.AreEqual(456, instanceVtField.GetValue(myClass));
instanceVtField.SetValue(myClass, 9182);
Assert.AreEqual(9182, instanceVtField.GetValue(myClass));
// rw object
myClass = new MyClassWithPrivateFields(123, testref1, 456, testref2);
SafeField instanceRefField = new SafeField(IField(myClass.GetType(), "instanceRefValue"));
Assert.AreSame(testref2, instanceRefField.GetValue(myClass));
instanceRefField.SetValue(myClass, testref1);
Assert.AreSame(testref1, instanceRefField.GetValue(myClass));
}