/// <summary> /// Attempt a virtual dispatch on a given instanceType based on the method found via a metadata token /// </summary> private static bool TryDispatchMethodOnTarget_Inner(NativeFormatModuleInfo module, int metadataToken, RuntimeTypeHandle targetInstanceType, out IntPtr methodAddress) { #if SUPPORTS_NATIVE_METADATA_TYPE_LOADING TypeSystemContext context = TypeSystemContextFactory.Create(); NativeFormatMetadataUnit metadataUnit = context.ResolveMetadataUnit(module); MethodDesc targetMethod = metadataUnit.GetMethod(metadataToken.AsHandle(), null); TypeDesc instanceType = context.ResolveRuntimeTypeHandle(targetInstanceType); MethodDesc realTargetMethod = targetMethod; // For non-interface methods we support the target method not being the exact target. (This allows // a canonical method to be passed in and work for any generic type instantiation.) if (!targetMethod.OwningType.IsInterface) { realTargetMethod = instanceType.FindMethodOnTypeWithMatchingTypicalMethod(targetMethod); } bool success = LazyVTableResolver.TryDispatchMethodOnTarget(instanceType, realTargetMethod, out methodAddress); TypeSystemContextFactory.Recycle(context); return(success); #else methodAddress = IntPtr.Zero; return(false); #endif }
/// <summary> /// Attempt to convert the dispatch cell to a metadata token to a more efficient vtable dispatch or interface/slot dispatch. /// Failure to convert is not a correctness issue. We also support performing a dispatch based on metadata token alone. /// </summary> private static DispatchCellInfo ConvertDispatchCellInfo_Inner(NativeFormatModuleInfo module, DispatchCellInfo cellInfo) { Debug.Assert(cellInfo.CellType == DispatchCellType.MetadataToken); TypeSystemContext context = TypeSystemContextFactory.Create(); MethodDesc targetMethod = context.ResolveMetadataUnit(module).GetMethod(cellInfo.MetadataToken.AsHandle(), null); Debug.Assert(!targetMethod.HasInstantiation); // At this time we do not support generic virtuals through the dispatch mechanism Debug.Assert(targetMethod.IsVirtual); if (targetMethod.OwningType.IsInterface) { if (!LazyVTableResolver.TryGetInterfaceSlotNumberFromMethod(targetMethod, out cellInfo.InterfaceSlot)) { // Unable to resolve interface method. Fail, by not mutating cellInfo return cellInfo; } if (!targetMethod.OwningType.RetrieveRuntimeTypeHandleIfPossible()) { new TypeBuilder().BuildType(targetMethod.OwningType); } cellInfo.CellType = DispatchCellType.InterfaceAndSlot; cellInfo.InterfaceType = targetMethod.OwningType.RuntimeTypeHandle.ToIntPtr(); cellInfo.MetadataToken = 0; } else { // Virtual function case, attempt to resolve to a VTable slot offset. // If the offset is less than 4096 update the cellInfo #if DEBUG // The path of resolving a metadata token at dispatch time is relatively rare in practice. // Force it to occur in debug builds with much more regularity if ((s_ConvertDispatchCellInfoCounter % 16) == 0) { s_ConvertDispatchCellInfoCounter++; TypeSystemContextFactory.Recycle(context); return cellInfo; } s_ConvertDispatchCellInfoCounter++; #endif int slotIndexOfMethod = LazyVTableResolver.VirtualMethodToSlotIndex(targetMethod); int vtableOffset = -1; if (slotIndexOfMethod >= 0) vtableOffset = LazyVTableResolver.SlotIndexToEETypeVTableOffset(slotIndexOfMethod); if ((vtableOffset < 4096) && (vtableOffset != -1)) { cellInfo.CellType = DispatchCellType.VTableOffset; cellInfo.VTableOffset = checked((uint)vtableOffset); cellInfo.MetadataToken = 0; } // Otherwise, do nothing, and resolve with a metadata dispatch later } TypeSystemContextFactory.Recycle(context); return cellInfo; }
private bool ResolveInterfaceGenericVirtualMethodSlot(RuntimeTypeHandle targetTypeHandle, ref RuntimeTypeHandle declaringType, ref MethodNameAndSignature methodNameAndSignature) { if (IsPregeneratedOrTemplateRuntimeTypeHandle(targetTypeHandle)) { // If the target type isn't dynamic, or at least is template type generated, the static lookup logic is what we want. return(ResolveInterfaceGenericVirtualMethodSlot_Static(targetTypeHandle, ref declaringType, ref methodNameAndSignature)); } else { #if SUPPORTS_NATIVE_METADATA_TYPE_LOADING TypeSystemContext context = TypeSystemContextFactory.Create(); DefType targetType = (DefType)context.ResolveRuntimeTypeHandle(targetTypeHandle); // Method being called... MethodDesc targetVirtualMethod = ResolveTypeHandleAndMethodNameAndSigToVirtualMethodDesc(context, declaringType, methodNameAndSignature); if (targetVirtualMethod == null) { // If we can't find the method in the type system, it must only be present in the static environment. Search there instead. TypeSystemContextFactory.Recycle(context); return(ResolveInterfaceGenericVirtualMethodSlot_Static(targetTypeHandle, ref declaringType, ref methodNameAndSignature)); } TypeDesc instanceDefTypeToExamine; MethodDesc newlyFoundVirtualMethod = LazyVTableResolver.ResolveInterfaceMethodToVirtualMethod(targetType, out instanceDefTypeToExamine, targetVirtualMethod); targetVirtualMethod = newlyFoundVirtualMethod; // The pregenerated base type must be the one that implements the interface method // Call into Redhawk to deal with this. if ((newlyFoundVirtualMethod == null) && (instanceDefTypeToExamine != null)) { TypeSystemContextFactory.Recycle(context); // If we can't find the method in the type system, the overload must be defined in the static environment. Search there instead. return(ResolveInterfaceGenericVirtualMethodSlot_Static(instanceDefTypeToExamine.GetRuntimeTypeHandle(), ref declaringType, ref methodNameAndSignature)); } declaringType = targetVirtualMethod.OwningType.GetRuntimeTypeHandle(); methodNameAndSignature = targetVirtualMethod.NameAndSignature; TypeSystemContextFactory.Recycle(context); return(true); #else Environment.FailFast("GVM Resolution for non template or pregenerated type"); return(false); #endif } }
/// <summary> /// Resolve a dispatch on an interface EEType/slot index pair to a function pointer /// </summary> private bool TryResolveTypeSlotDispatch_Inner(IntPtr targetTypeAsIntPtr, IntPtr interfaceTypeAsIntPtr, ushort slot, out IntPtr methodAddress) { methodAddress = IntPtr.Zero; #if SUPPORTS_NATIVE_METADATA_TYPE_LOADING TypeSystemContext context = TypeSystemContextFactory.Create(); TypeDesc targetType; TypeDesc interfaceType; unsafe { targetType = context.ResolveRuntimeTypeHandle(((EEType *)targetTypeAsIntPtr.ToPointer())->ToRuntimeTypeHandle()); interfaceType = context.ResolveRuntimeTypeHandle(((EEType *)interfaceTypeAsIntPtr.ToPointer())->ToRuntimeTypeHandle()); } if (!(interfaceType.GetTypeDefinition() is MetadataType)) { // If the interface open type is not a metadata type, this must be an interface not known in the metadata world. // Use the redhawk resolver for this directly. TypeDesc pregeneratedType = LazyVTableResolver.GetMostDerivedPregeneratedOrTemplateLoadedType(targetType); pregeneratedType.RetrieveRuntimeTypeHandleIfPossible(); interfaceType.RetrieveRuntimeTypeHandleIfPossible(); methodAddress = RuntimeAugments.ResolveDispatchOnType(pregeneratedType.RuntimeTypeHandle, interfaceType.RuntimeTypeHandle, slot); } else { MethodDesc interfaceMethod; if (!LazyVTableResolver.TryGetMethodFromInterfaceSlot(interfaceType, slot, out interfaceMethod)) { return(false); } if (!LazyVTableResolver.TryDispatchMethodOnTarget(targetType, interfaceMethod, out methodAddress)) { return(false); } } TypeSystemContextFactory.Recycle(context); return(true); #else return(false); #endif }
/// <summary> /// Try to resolve a virtual call to targetMethod to its implementation on instanceType. /// </summary> /// <param name="instanceType">non-interface type</param> /// <param name="targetMethod">non-generic virtual or interface method</param> /// <param name="methodAddress">function pointer resolved</param> /// <returns>true if successful</returns> public static bool TryDispatchMethodOnTarget(TypeDesc instanceType, MethodDesc targetMethod, out IntPtr methodAddress) { methodAddress = IntPtr.Zero; if (targetMethod == null) { return(false); } if (IsPregeneratedOrTemplateTypeLoaded(instanceType)) { if (targetMethod.OwningType.IsInterface) { ushort interfaceSlot; if (!TryGetInterfaceSlotNumberFromMethod(targetMethod, out interfaceSlot)) { return(false); } methodAddress = RuntimeAugments.ResolveDispatchOnType(instanceType.GetRuntimeTypeHandle(), targetMethod.OwningType.GetRuntimeTypeHandle(), interfaceSlot); Debug.Assert(methodAddress != IntPtr.Zero); // TODO! This should happen for ICastable dispatch... return(true); } else { unsafe { int vtableSlotIndex = LazyVTableResolver.VirtualMethodToSlotIndex(targetMethod); EEType *eeType = instanceType.GetRuntimeTypeHandle().ToEETypePtr(); IntPtr *vtableStart = (IntPtr *)(((byte *)eeType) + sizeof(EEType)); methodAddress = vtableStart[vtableSlotIndex]; return(true); } } } MethodDesc targetVirtualMethod = targetMethod; DefType instanceDefType = instanceType.GetClosestDefType(); // For interface resolution, its a two step process, first get the virtual slot if (targetVirtualMethod.OwningType.IsInterface) { TypeDesc instanceDefTypeToExamine; MethodDesc newlyFoundVirtualMethod = ResolveInterfaceMethodToVirtualMethod(instanceType, out instanceDefTypeToExamine, targetVirtualMethod); targetVirtualMethod = newlyFoundVirtualMethod; // The pregenerated type must be the one that implements the interface method // Call into Redhawk to deal with this. if ((newlyFoundVirtualMethod == null) && (instanceDefTypeToExamine != null)) { ushort interfaceSlot; if (!TryGetInterfaceSlotNumberFromMethod(targetMethod, out interfaceSlot)) { return(false); } methodAddress = RuntimeAugments.ResolveDispatchOnType(instanceDefTypeToExamine.GetRuntimeTypeHandle(), targetMethod.OwningType.GetRuntimeTypeHandle(), interfaceSlot); Debug.Assert(methodAddress != IntPtr.Zero); // TODO! This should happen for ICastable dispatch... return(true); } } // VirtualSlot can be null if the interface method isn't really implemented. This should never happen, but since our // type loader doesn't check all interface overloads at load time, it could happen if (targetVirtualMethod == null) { return(false); } // Resolve virtual method to exact method MethodDesc dispatchMethod = instanceDefType.FindVirtualFunctionTargetMethodOnObjectType(targetVirtualMethod); return(TryGetVTableCallableAddress(dispatchMethod, out methodAddress)); }
private ushort ComputeNumVTableSlots() { if (TypeBeingBuilt.RetrieveRuntimeTypeHandleIfPossible()) { unsafe { return(TypeBeingBuilt.RuntimeTypeHandle.ToEETypePtr()->NumVtableSlots); } } else { TypeDesc templateType = TypeBeingBuilt.ComputeTemplate(false); if (templateType != null) { // Template type loader case if (VTableSlotsMapping != null) { return(checked ((ushort)VTableSlotsMapping.NumSlotMappings)); } else { // This should only happen for non-universal templates Debug.Assert(TypeBeingBuilt.IsTemplateCanonical()); // Canonical template type loader case unsafe { return(templateType.GetRuntimeTypeHandle().ToEETypePtr()->NumVtableSlots); } } } else if (TypeBeingBuilt.IsMdArray) { // MDArray types have the same vtable as the System.Array type they "derive" from. unsafe { return(TypeBeingBuilt.BaseType.GetRuntimeTypeHandle().ToEETypePtr()->NumVtableSlots); } } else { // Metadata based type loading. // Generic Type Definitions have no actual vtable entries if (TypeBeingBuilt.IsGenericDefinition) { return(0); } // We have at least as many slots as exist on the base type. ushort numVTableSlots = 0; checked { if (TypeBeingBuilt.BaseType != null) { numVTableSlots = TypeBeingBuilt.BaseType.GetOrCreateTypeBuilderState().NumVTableSlots; } else { // Generic interfaces have a dictionary slot if (TypeBeingBuilt.IsInterface && TypeBeingBuilt.HasInstantiation) { numVTableSlots = 1; } } // Interfaces have actual vtable slots if (TypeBeingBuilt.IsInterface) { return(numVTableSlots); } foreach (MethodDesc method in TypeBeingBuilt.GetMethods()) { #if SUPPORTS_NATIVE_METADATA_TYPE_LOADING if (LazyVTableResolver.MethodDefinesVTableSlot(method)) { numVTableSlots++; } #else Environment.FailFast("metadata type loader required"); #endif } if (HasDictionarySlotInVTable) { numVTableSlots++; } } return(numVTableSlots); } } }
private static void CreateEETypeWorker(EEType *pTemplateEEType, UInt32 hashCodeOfNewType, int arity, bool requireVtableSlotMapping, TypeBuilderState state) { bool successful = false; IntPtr eeTypePtrPlusGCDesc = IntPtr.Zero; IntPtr dynamicDispatchMapPtr = IntPtr.Zero; DynamicModule *dynamicModulePtr = null; try { Debug.Assert((pTemplateEEType != null) || (state.TypeBeingBuilt as MetadataType != null)); // In some situations involving arrays we can find as a template a dynamically generated type. // In that case, the correct template would be the template used to create the dynamic type in the first // place. if (pTemplateEEType != null && pTemplateEEType->IsDynamicType) { pTemplateEEType = pTemplateEEType->DynamicTemplateType; } ModuleInfo moduleInfo = TypeLoaderEnvironment.GetModuleInfoForType(state.TypeBeingBuilt); dynamicModulePtr = moduleInfo.DynamicModulePtr; Debug.Assert(dynamicModulePtr != null); bool requiresDynamicDispatchMap = requireVtableSlotMapping && (pTemplateEEType != null) && pTemplateEEType->HasDispatchMap; uint valueTypeFieldPaddingEncoded = 0; int baseSize = 0; bool isValueType; bool hasFinalizer; bool isNullable; bool isArray; bool isGeneric; ushort componentSize = 0; ushort flags; ushort runtimeInterfacesLength = 0; bool isGenericEETypeDef = false; if (state.RuntimeInterfaces != null) { runtimeInterfacesLength = checked ((ushort)state.RuntimeInterfaces.Length); } if (pTemplateEEType != null) { valueTypeFieldPaddingEncoded = EEType.ComputeValueTypeFieldPaddingFieldValue( pTemplateEEType->ValueTypeFieldPadding, (uint)pTemplateEEType->FieldAlignmentRequirement); baseSize = (int)pTemplateEEType->BaseSize; isValueType = pTemplateEEType->IsValueType; hasFinalizer = pTemplateEEType->IsFinalizable; isNullable = pTemplateEEType->IsNullable; componentSize = pTemplateEEType->ComponentSize; flags = pTemplateEEType->Flags; isArray = pTemplateEEType->IsArray; isGeneric = pTemplateEEType->IsGeneric; Debug.Assert(pTemplateEEType->NumInterfaces == runtimeInterfacesLength); } else if (state.TypeBeingBuilt.IsGenericDefinition) { flags = (ushort)EETypeKind.GenericTypeDefEEType; isValueType = state.TypeBeingBuilt.IsValueType; if (isValueType) { flags |= (ushort)EETypeFlags.ValueTypeFlag; } if (state.TypeBeingBuilt.IsInterface) { flags |= (ushort)EETypeFlags.IsInterfaceFlag; } hasFinalizer = false; isArray = false; isNullable = false; isGeneric = false; isGenericEETypeDef = true; componentSize = checked ((ushort)state.TypeBeingBuilt.Instantiation.Length); baseSize = 0; } else { isValueType = state.TypeBeingBuilt.IsValueType; hasFinalizer = state.TypeBeingBuilt.HasFinalizer; isNullable = state.TypeBeingBuilt.GetTypeDefinition().IsNullable; flags = EETypeBuilderHelpers.ComputeFlags(state.TypeBeingBuilt); isArray = false; isGeneric = state.TypeBeingBuilt.HasInstantiation; if (state.TypeBeingBuilt.HasVariance) { state.GenericVarianceFlags = new int[state.TypeBeingBuilt.Instantiation.Length]; int i = 0; foreach (GenericParameterDesc gpd in state.TypeBeingBuilt.GetTypeDefinition().Instantiation) { state.GenericVarianceFlags[i] = (int)gpd.Variance; i++; } Debug.Assert(i == state.GenericVarianceFlags.Length); } } // TODO! Change to if template is Universal or non-Existent if (state.TypeSize.HasValue) { baseSize = state.TypeSize.Value; int baseSizeBeforeAlignment = baseSize; baseSize = MemoryHelpers.AlignUp(baseSize, IntPtr.Size); if (isValueType) { // Compute the valuetype padding size based on size before adding the object type pointer field to the size uint cbValueTypeFieldPadding = (uint)(baseSize - baseSizeBeforeAlignment); // Add Object type pointer field to base size baseSize += IntPtr.Size; valueTypeFieldPaddingEncoded = (uint)EEType.ComputeValueTypeFieldPaddingFieldValue(cbValueTypeFieldPadding, (uint)state.FieldAlignment.Value); } // Minimum base size is 3 pointers, and requires us to bump the size of an empty class type if (baseSize <= IntPtr.Size) { // ValueTypes should already have had their size bumped up by the normal type layout process Debug.Assert(!isValueType); baseSize += IntPtr.Size; } // Add sync block skew baseSize += IntPtr.Size; // Minimum basesize is 3 pointers Debug.Assert(baseSize >= (IntPtr.Size * 3)); } // Optional fields encoding int cbOptionalFieldsSize; OptionalFieldsRuntimeBuilder optionalFields; { optionalFields = new OptionalFieldsRuntimeBuilder(pTemplateEEType != null ? pTemplateEEType->OptionalFieldsPtr : null); UInt32 rareFlags = optionalFields.GetFieldValue(EETypeOptionalFieldTag.RareFlags, 0); rareFlags |= (uint)EETypeRareFlags.IsDynamicTypeFlag; // Set the IsDynamicTypeFlag rareFlags &= ~(uint)EETypeRareFlags.NullableTypeViaIATFlag; // Remove the NullableTypeViaIATFlag flag rareFlags &= ~(uint)EETypeRareFlags.HasSealedVTableEntriesFlag; // Remove the HasSealedVTableEntriesFlag // we'll set IsDynamicTypeWithSealedVTableEntriesFlag instead // Set the IsDynamicTypeWithSealedVTableEntriesFlag if needed if (state.NumSealedVTableEntries > 0) { rareFlags |= (uint)EETypeRareFlags.IsDynamicTypeWithSealedVTableEntriesFlag; } if (requiresDynamicDispatchMap) { rareFlags |= (uint)EETypeRareFlags.HasDynamicallyAllocatedDispatchMapFlag; } if (state.NonGcDataSize != 0) { rareFlags |= (uint)EETypeRareFlags.IsDynamicTypeWithNonGcStatics; } if (state.GcDataSize != 0) { rareFlags |= (uint)EETypeRareFlags.IsDynamicTypeWithGcStatics; } if (state.ThreadDataSize != 0) { rareFlags |= (uint)EETypeRareFlags.IsDynamicTypeWithThreadStatics; } #if ARM if (state.FieldAlignment == 8) { rareFlags |= (uint)EETypeRareFlags.RequiresAlign8Flag; } else { rareFlags &= ~(uint)EETypeRareFlags.RequiresAlign8Flag; } if (state.IsHFA) { rareFlags |= (uint)EETypeRareFlags.IsHFAFlag; } else { rareFlags &= ~(uint)EETypeRareFlags.IsHFAFlag; } #endif if (state.HasStaticConstructor) { rareFlags |= (uint)EETypeRareFlags.HasCctorFlag; } else { rareFlags &= ~(uint)EETypeRareFlags.HasCctorFlag; } rareFlags |= (uint)EETypeRareFlags.HasDynamicModuleFlag; optionalFields.SetFieldValue(EETypeOptionalFieldTag.RareFlags, rareFlags); // Dispatch map is fetched either from template type, or from the dynamically allocated DispatchMap field optionalFields.ClearField(EETypeOptionalFieldTag.DispatchMap); optionalFields.ClearField(EETypeOptionalFieldTag.ValueTypeFieldPadding); if (valueTypeFieldPaddingEncoded != 0) { optionalFields.SetFieldValue(EETypeOptionalFieldTag.ValueTypeFieldPadding, valueTypeFieldPaddingEncoded); } // Compute size of optional fields encoding cbOptionalFieldsSize = optionalFields.Encode(); Debug.Assert(cbOptionalFieldsSize > 0); } // Note: The number of vtable slots on the EEType to create is not necessary equal to the number of // vtable slots on the template type for universal generics (see ComputeVTableLayout) ushort numVtableSlots = state.NumVTableSlots; // Compute the EEType size and allocate it EEType *pEEType; { // In order to get the size of the EEType to allocate we need the following information // 1) The number of VTable slots (from the TypeBuilderState) // 2) The number of Interfaces (from the template) // 3) Whether or not there is a finalizer (from the template) // 4) Optional fields size // 5) Whether or not the type is nullable (from the template) // 6) Whether or not the type has sealed virtuals (from the TypeBuilderState) int cbEEType = (int)EEType.GetSizeofEEType( numVtableSlots, runtimeInterfacesLength, hasFinalizer, true, isNullable, state.NumSealedVTableEntries > 0, isGeneric, state.NonGcDataSize != 0, state.GcDataSize != 0, state.ThreadDataSize != 0); // Dynamic types have an extra pointer-sized field that contains a pointer to their template type cbEEType += IntPtr.Size; // Check if we need another pointer sized field for a dynamic DispatchMap cbEEType += (requiresDynamicDispatchMap ? IntPtr.Size : 0); // Add another pointer sized field for a DynamicModule cbEEType += IntPtr.Size; int cbGCDesc = GetInstanceGCDescSize(state, pTemplateEEType, isValueType, isArray); int cbGCDescAligned = MemoryHelpers.AlignUp(cbGCDesc, IntPtr.Size); // Allocate enough space for the EEType + gcDescSize eeTypePtrPlusGCDesc = MemoryHelpers.AllocateMemory(cbGCDescAligned + cbEEType + cbOptionalFieldsSize); // Get the EEType pointer, and the template EEType pointer pEEType = (EEType *)(eeTypePtrPlusGCDesc + cbGCDescAligned); state.HalfBakedRuntimeTypeHandle = pEEType->ToRuntimeTypeHandle(); // Set basic EEType fields pEEType->ComponentSize = componentSize; pEEType->Flags = flags; pEEType->BaseSize = (uint)baseSize; pEEType->NumVtableSlots = numVtableSlots; pEEType->NumInterfaces = runtimeInterfacesLength; pEEType->HashCode = hashCodeOfNewType; // Write the GCDesc bool isSzArray = isArray ? state.ArrayRank < 1 : false; int arrayRank = isArray ? state.ArrayRank.Value : 0; CreateInstanceGCDesc(state, pTemplateEEType, pEEType, baseSize, cbGCDesc, isValueType, isArray, isSzArray, arrayRank); Debug.Assert(pEEType->HasGCPointers == (cbGCDesc != 0)); #if GENERICS_FORCE_USG if (state.NonUniversalTemplateType != null) { Debug.Assert(state.NonUniversalInstanceGCDescSize == cbGCDesc, "Non-universal instance GCDesc size not matching with universal GCDesc size!"); Debug.Assert(cbGCDesc == 0 || pEEType->HasGCPointers); // The TestGCDescsForEquality helper will compare 2 GCDescs for equality, 4 bytes at a time (GCDesc contents treated as integers), and will read the // GCDesc data in *reverse* order for instance GCDescs (subtracts 4 from the pointer values at each iteration). // - For the first GCDesc, we use (pEEType - 4) to point to the first 4-byte integer directly preceeding the EEType // - For the second GCDesc, given that the state.NonUniversalInstanceGCDesc already points to the first byte preceeding the template EEType, we // subtract 3 to point to the first 4-byte integer directly preceeding the template EEtype TestGCDescsForEquality(new IntPtr((byte *)pEEType - 4), state.NonUniversalInstanceGCDesc - 3, cbGCDesc, true); } #endif // Copy the encoded optional fields buffer to the newly allocated memory, and update the OptionalFields field on the EEType // It is important to set the optional fields first on the newly created EEType, because all other 'setters' // will assert that the type is dynamic, just to make sure we are not making any changes to statically compiled types pEEType->OptionalFieldsPtr = (byte *)pEEType + cbEEType; optionalFields.WriteToEEType(pEEType, cbOptionalFieldsSize); #if CORERT pEEType->PointerToTypeManager = PermanentAllocatedMemoryBlobs.GetPointerToIntPtr(moduleInfo.Handle); #endif pEEType->DynamicModule = dynamicModulePtr; // Copy VTable entries from template type int numSlotsFilled = 0; IntPtr *pVtable = (IntPtr *)((byte *)pEEType + sizeof(EEType)); if (pTemplateEEType != null) { IntPtr *pTemplateVtable = (IntPtr *)((byte *)pTemplateEEType + sizeof(EEType)); for (int i = 0; i < pTemplateEEType->NumVtableSlots; i++) { int vtableSlotInDynamicType = requireVtableSlotMapping ? state.VTableSlotsMapping.GetVTableSlotInTargetType(i) : i; if (vtableSlotInDynamicType != -1) { Debug.Assert(vtableSlotInDynamicType < numVtableSlots); IntPtr dictionaryPtrValue; if (requireVtableSlotMapping && state.VTableSlotsMapping.IsDictionarySlot(i, out dictionaryPtrValue)) { // This must be the dictionary pointer value of one of the base types of the // current universal generic type being constructed. pVtable[vtableSlotInDynamicType] = dictionaryPtrValue; // Assert that the current template vtable slot is also a NULL value since all // universal generic template types have NULL dictionary slot values in their vtables Debug.Assert(pTemplateVtable[i] == IntPtr.Zero); } else { pVtable[vtableSlotInDynamicType] = pTemplateVtable[i]; } numSlotsFilled++; } } } else if (isGenericEETypeDef) { // If creating a Generic Type Definition Debug.Assert(pEEType->NumVtableSlots == 0); } else { #if SUPPORTS_NATIVE_METADATA_TYPE_LOADING // Dynamically loaded type // Fill the vtable with vtable resolution thunks in all slots except for // the dictionary slots, which should be filled with dictionary pointers if those // dictionaries are already published. TypeDesc nextTypeToExamineForDictionarySlot = state.TypeBeingBuilt; TypeDesc typeWithDictionary; int nextDictionarySlot = GetMostDerivedDictionarySlot(ref nextTypeToExamineForDictionarySlot, out typeWithDictionary); for (int iSlot = pEEType->NumVtableSlots - 1; iSlot >= 0; iSlot--) { bool isDictionary = iSlot == nextDictionarySlot; if (!isDictionary) { pVtable[iSlot] = LazyVTableResolver.GetThunkForSlot(iSlot); } else { if (typeWithDictionary.RetrieveRuntimeTypeHandleIfPossible()) { pVtable[iSlot] = typeWithDictionary.RuntimeTypeHandle.GetDictionary(); } nextDictionarySlot = GetMostDerivedDictionarySlot(ref nextTypeToExamineForDictionarySlot, out typeWithDictionary); } numSlotsFilled++; } #else Environment.FailFast("Template type loader is null, but metadata based type loader is not in use"); #endif } Debug.Assert(numSlotsFilled == numVtableSlots); // Copy Pointer to finalizer method from the template type if (hasFinalizer) { if (pTemplateEEType != null) { pEEType->FinalizerCode = pTemplateEEType->FinalizerCode; } else { #if SUPPORTS_NATIVE_METADATA_TYPE_LOADING pEEType->FinalizerCode = LazyVTableResolver.GetFinalizerThunk(); #else Environment.FailFast("Template type loader is null, but metadata based type loader is not in use"); #endif } } } // Copy the sealed vtable entries if they exist on the template type if (state.NumSealedVTableEntries > 0) { state.HalfBakedSealedVTable = MemoryHelpers.AllocateMemory((int)state.NumSealedVTableEntries * IntPtr.Size); UInt32 cbSealedVirtualSlotsTypeOffset = pEEType->GetFieldOffset(EETypeField.ETF_SealedVirtualSlots); *((IntPtr *)((byte *)pEEType + cbSealedVirtualSlotsTypeOffset)) = state.HalfBakedSealedVTable; for (UInt16 i = 0; i < state.NumSealedVTableEntries; i++) { IntPtr value = pTemplateEEType->GetSealedVirtualSlot(i); pEEType->SetSealedVirtualSlot(value, i); } } // Create a new DispatchMap for the type if (requiresDynamicDispatchMap) { DispatchMap *pTemplateDispatchMap = (DispatchMap *)RuntimeAugments.GetDispatchMapForType(pTemplateEEType->ToRuntimeTypeHandle()); dynamicDispatchMapPtr = MemoryHelpers.AllocateMemory(pTemplateDispatchMap->Size); UInt32 cbDynamicDispatchMapOffset = pEEType->GetFieldOffset(EETypeField.ETF_DynamicDispatchMap); *((IntPtr *)((byte *)pEEType + cbDynamicDispatchMapOffset)) = dynamicDispatchMapPtr; DispatchMap *pDynamicDispatchMap = (DispatchMap *)dynamicDispatchMapPtr; pDynamicDispatchMap->NumEntries = pTemplateDispatchMap->NumEntries; for (int i = 0; i < pTemplateDispatchMap->NumEntries; i++) { DispatchMap.DispatchMapEntry *pTemplateEntry = (*pTemplateDispatchMap)[i]; DispatchMap.DispatchMapEntry *pDynamicEntry = (*pDynamicDispatchMap)[i]; pDynamicEntry->_usInterfaceIndex = pTemplateEntry->_usInterfaceIndex; pDynamicEntry->_usInterfaceMethodSlot = pTemplateEntry->_usInterfaceMethodSlot; if (pTemplateEntry->_usImplMethodSlot < pTemplateEEType->NumVtableSlots) { pDynamicEntry->_usImplMethodSlot = (ushort)state.VTableSlotsMapping.GetVTableSlotInTargetType(pTemplateEntry->_usImplMethodSlot); Debug.Assert(pDynamicEntry->_usImplMethodSlot < numVtableSlots); } else { // This is an entry in the sealed vtable. We need to adjust the slot number based on the number of vtable slots // in the dynamic EEType pDynamicEntry->_usImplMethodSlot = (ushort)(pTemplateEntry->_usImplMethodSlot - pTemplateEEType->NumVtableSlots + numVtableSlots); Debug.Assert(state.NumSealedVTableEntries > 0 && pDynamicEntry->_usImplMethodSlot >= numVtableSlots && (pDynamicEntry->_usImplMethodSlot - numVtableSlots) < state.NumSealedVTableEntries); } } } if (pTemplateEEType != null) { pEEType->DynamicTemplateType = pTemplateEEType; } else { // Use object as the template type for non-template based EETypes. This will // allow correct Module identification for types. if (state.TypeBeingBuilt.HasVariance) { // TODO! We need to have a variant EEType here if the type has variance, as the // CreateGenericInstanceDescForType requires it. However, this is a ridiculous api surface // When we remove GenericInstanceDescs from the product, get rid of this weird special // case pEEType->DynamicTemplateType = typeof(IEnumerable <int>).TypeHandle.ToEETypePtr(); } else { pEEType->DynamicTemplateType = typeof(object).TypeHandle.ToEETypePtr(); } } int nonGCStaticDataOffset = 0; if (!isArray && !isGenericEETypeDef) { nonGCStaticDataOffset = state.HasStaticConstructor ? -TypeBuilder.ClassConstructorOffset : 0; // create GC desc if (state.GcDataSize != 0 && state.GcStaticDesc == IntPtr.Zero) { int cbStaticGCDesc; state.GcStaticDesc = CreateStaticGCDesc(state.StaticGCLayout, out state.AllocatedStaticGCDesc, out cbStaticGCDesc); #if GENERICS_FORCE_USG TestGCDescsForEquality(state.GcStaticDesc, state.NonUniversalStaticGCDesc, cbStaticGCDesc, false); #endif } if (state.ThreadDataSize != 0 && state.ThreadStaticDesc == IntPtr.Zero) { int cbThreadStaticGCDesc; state.ThreadStaticDesc = CreateStaticGCDesc(state.ThreadStaticGCLayout, out state.AllocatedThreadStaticGCDesc, out cbThreadStaticGCDesc); #if GENERICS_FORCE_USG TestGCDescsForEquality(state.ThreadStaticDesc, state.NonUniversalThreadStaticGCDesc, cbThreadStaticGCDesc, false); #endif } // If we have a class constructor, our NonGcDataSize MUST be non-zero Debug.Assert(!state.HasStaticConstructor || (state.NonGcDataSize != 0)); } if (isGeneric) { if (!RuntimeAugments.CreateGenericInstanceDescForType(*(RuntimeTypeHandle *)&pEEType, arity, state.NonGcDataSize, nonGCStaticDataOffset, state.GcDataSize, (int)state.ThreadStaticOffset, state.GcStaticDesc, state.ThreadStaticDesc, state.GenericVarianceFlags)) { throw new OutOfMemoryException(); } } else { Debug.Assert(arity == 0 || isGenericEETypeDef); // We don't need to report the non-gc and gc static data regions and allocate them for non-generics, // as we currently place these fields directly into the image if (!isGenericEETypeDef && state.ThreadDataSize != 0) { // Types with thread static fields ALWAYS get a GID. The GID is used to perform GC // and lifetime management of the thread static data. However, these GIDs are only used for that // so the specified GcDataSize, etc are 0 if (!RuntimeAugments.CreateGenericInstanceDescForType(*(RuntimeTypeHandle *)&pEEType, 0, 0, 0, 0, (int)state.ThreadStaticOffset, IntPtr.Zero, state.ThreadStaticDesc, null)) { throw new OutOfMemoryException(); } } } if (state.Dictionary != null) { state.HalfBakedDictionary = state.Dictionary.Allocate(); } Debug.Assert(!state.HalfBakedRuntimeTypeHandle.IsNull()); Debug.Assert((state.NumSealedVTableEntries == 0 && state.HalfBakedSealedVTable == IntPtr.Zero) || (state.NumSealedVTableEntries > 0 && state.HalfBakedSealedVTable != IntPtr.Zero)); Debug.Assert((state.Dictionary == null && state.HalfBakedDictionary == IntPtr.Zero) || (state.Dictionary != null && state.HalfBakedDictionary != IntPtr.Zero)); successful = true; } finally { if (!successful) { if (eeTypePtrPlusGCDesc != IntPtr.Zero) { MemoryHelpers.FreeMemory(eeTypePtrPlusGCDesc); } if (dynamicDispatchMapPtr != IntPtr.Zero) { MemoryHelpers.FreeMemory(dynamicDispatchMapPtr); } if (state.HalfBakedSealedVTable != IntPtr.Zero) { MemoryHelpers.FreeMemory(state.HalfBakedSealedVTable); } if (state.HalfBakedDictionary != IntPtr.Zero) { MemoryHelpers.FreeMemory(state.HalfBakedDictionary); } if (state.AllocatedStaticGCDesc) { MemoryHelpers.FreeMemory(state.GcStaticDesc); } if (state.AllocatedThreadStaticGCDesc) { MemoryHelpers.FreeMemory(state.ThreadStaticDesc); } } } }