static public void Prepare(this MethodBase method, bool needSpecialPrepare = false)
{
// test not good enough (too broad)
//if (method.DeclaringType != null && method.DeclaringType.IsGenericType)
// todo Jens maybe better but still not good enough
//if (needSpecialPrepare)
//{
// // e.g.: if method has not been called yet
// // Jens maybe also need to test if method type parameter unused but how can our code see that?
// var _runtimeTypeHandles = method.DeclaringType.GetGenericArguments().Select(type => type.TypeHandle).ToArray();
// RuntimeHelpers.PrepareMethod(method.Handle(), _runtimeTypeHandles);
// return;
//}
try
{
RuntimeHelpers.PrepareMethod(method.Handle());
}
catch (ArgumentException e) //when (e.Message == "The given generic instantiation was invalid.")
{
// we know what to do just not when to do it (supplying TypeHandles when not needed also course an exception)
// see also https://stackoverflow.com/questions/31754418/runtimehelpers-preparemethod-not-working-when-called-with-funcstring-created-i
var _runtimeTypeHandles = method.DeclaringType.GetGenericArguments().Select(type => type.TypeHandle).ToArray();
RuntimeHelpers.PrepareMethod(method.Handle(), _runtimeTypeHandles);
}
}
static public IntPtr Pointer(this MethodBase method)
{
return(method.Handle().GetFunctionPointer());
}
static public void Prepare(this MethodBase method)
{
RuntimeHelpers.PrepareMethod(method.Handle());
}
