// IL code: sizeof
public unsafe static int SizeOf <T>(RuntimeTypeHandle typeHandle)
{
if (RuntimeAugments.IsValueType(typeHandle))
{
return(typeHandle.GetValueTypeSize());
}
else
{
return(sizeof(IntPtr));
}
}
public override int GetStructUnsafeStructSize(RuntimeTypeHandle structureTypeHandle)
{
if (TryGetStructUnsafeStructSize(structureTypeHandle, out int size))
{
return(size);
}
// IsBlittable() checks whether the type contains GC references. It is approximate check with false positives.
// This fallback path will return incorrect answer for types that do not contain GC references, but that are
// not actually blittable; e.g. for types with bool fields.
if (structureTypeHandle.IsBlittable() && structureTypeHandle.IsValueType())
{
return(structureTypeHandle.GetValueTypeSize());
}
throw new MissingInteropDataException(SR.StructMarshalling_MissingInteropData, Type.GetTypeFromHandle(structureTypeHandle));
}
private static int SizeOf(Type t)
{
Debug.Assert(t != null, "t");
if (t.TypeHandle.IsGenericType())
{
throw new ArgumentException(SR.Argument_NeedNonGenericType, "t");
}
RuntimeTypeHandle typeHandle = t.TypeHandle;
if (!(typeHandle.IsBlittable() && typeHandle.IsValueType()))
{
throw new ArgumentException(SR.Argument_NeedStructWithNoRefs);
}
return(typeHandle.GetValueTypeSize());
}