Add support for interface dispatch to have a codepath that supports resolution from a metadata token

- Instead of an interface/slot pair
- Cell information is now consolidated into a structure instead of being passed around as a tuple of interface/slot
- Encoding is more complex to avoid bloating the data format
- In addition to interface dispatch, the logic is also able to perform vtable dispatch
- Add support for the concept of dynamic modules
- A dynamic module provides a set of callbacks that are special around the behavior of interface dispatch
- ModuleList associates a DynamicModule with normal module. At some point we will consolidate the DynamicModule with the ModuleManager

Miscellaneous changes
- New variant of LockFreeReaderHashtable to be used with native pointers.
- Support for a cloned type to be cloned based on a direct pointer instead of an indirection

[tfs-changeset: 1630711]

1 files changed, 5 insertions, 5 deletions

diff --git a/src/Native/Runtime/eetype.cpp b/src/Native/Runtime/eetype.cpp
index b1cea129a..82edd8aaf 100644
--- a/src/Native/Runtime/eetype.cpp
+++ b/src/Native/Runtime/eetype.cpp
@@ -81,8 +81,7 @@ bool EEType::Validate(bool assertOnFail /* default: true */)
         case 2:
         {
             // Cloned string.
-            if (!IsRelatedTypeViaIAT() ||
-                get_IsValueType() ||
+            if (get_IsValueType() ||
                 HasFinalizer() ||
                 HasReferenceFields() ||
                 HasGenericVariance())
@@ -150,9 +149,10 @@ EEType * EEType::get_CanonicalEEType()
 {
 	// cloned EETypes must always refer to types in other modules
 	ASSERT(IsCloned());
-	ASSERT(IsRelatedTypeViaIAT());
-
-	return *PTR_PTR_EEType(reinterpret_cast<TADDR>(m_RelatedType.m_ppCanonicalTypeViaIAT));
+    if (IsRelatedTypeViaIAT())
+        return *PTR_PTR_EEType(reinterpret_cast<TADDR>(m_RelatedType.m_ppCanonicalTypeViaIAT));
+    else
+        return PTR_EEType(reinterpret_cast<TADDR>(m_RelatedType.m_pCanonicalType)); // in the R2R case, the link is direct rather than indirect via the IAT
 }
 
 //-----------------------------------------------------------------------------------------------------------