protected virtual void ComputeValueTypeFieldPadding()
{
// All objects that can have appreciable which can be derived from size compute ValueTypeFieldPadding.
// Unfortunately, the name ValueTypeFieldPadding is now wrong to avoid integration conflicts.
// Interfaces, sealed types, and non-DefTypes cannot be derived from
if (_type.IsInterface || !_type.IsDefType || (_type.IsSealed() && !_type.IsValueType))
{
return;
}
DefType defType = _type as DefType;
Debug.Assert(defType != null);
uint valueTypeFieldPaddingEncoded;
if (defType.InstanceByteCount.IsIndeterminate)
{
valueTypeFieldPaddingEncoded = EETypeBuilderHelpers.ComputeValueTypeFieldPaddingFieldValue(0, 1);
}
else
{
uint valueTypeFieldPadding = checked ((uint)(defType.InstanceByteCount.AsInt - defType.InstanceByteCountUnaligned.AsInt));
valueTypeFieldPaddingEncoded = EETypeBuilderHelpers.ComputeValueTypeFieldPaddingFieldValue(valueTypeFieldPadding, (uint)defType.InstanceFieldAlignment.AsInt);
}
if (valueTypeFieldPaddingEncoded != 0)
{
_optionalFieldsBuilder.SetFieldValue(EETypeOptionalFieldTag.ValueTypeFieldPadding, valueTypeFieldPaddingEncoded);
}
}
protected internal override void ComputeOptionalEETypeFields(NodeFactory factory, bool relocsOnly)
{
if (_type.IsCanonicalDefinitionType(CanonicalFormKind.Universal))
{
// Value types should have at least 1 byte of size to avoid zero-length structures
// Add pointer-size to the number of instance field bytes to consistently represents the boxed size.
uint numInstanceFieldBytes = 1 + (uint)factory.Target.PointerSize;
uint valueTypeFieldPadding = (uint)(MinimumObjectSize - factory.Target.PointerSize) - numInstanceFieldBytes;
uint valueTypeFieldPaddingEncoded = EETypeBuilderHelpers.ComputeValueTypeFieldPaddingFieldValue(valueTypeFieldPadding, 1, _type.Context.Target.PointerSize);
Debug.Assert(valueTypeFieldPaddingEncoded != 0);
_optionalFieldsBuilder.SetFieldValue(EETypeOptionalFieldTag.ValueTypeFieldPadding, valueTypeFieldPaddingEncoded);
}
}
void ComputeValueTypeFieldPadding()
{
if (!_type.IsValueType)
{
return;
}
DefType defType = _type as DefType;
Debug.Assert(defType != null);
uint valueTypeFieldPadding = checked ((uint)(defType.InstanceByteCount - defType.InstanceByteCountUnaligned));
uint valueTypeFieldPaddingEncoded = EETypeBuilderHelpers.ComputeValueTypeFieldPaddingFieldValue(valueTypeFieldPadding, (uint)defType.InstanceFieldAlignment);
if (valueTypeFieldPaddingEncoded != 0)
{
_optionalFieldsBuilder.SetFieldValue(EETypeOptionalFieldsElement.ValueTypeFieldPadding, valueTypeFieldPaddingEncoded);
}
}
