internal unsafe extern static EEType *RhpGetArrayBaseType(EEType *pEEType);
internal unsafe extern static DispatchResolve.DispatchMap *RhpGetDispatchMap(EEType * pEEType);
public static unsafe uint RhGetEETypeHash(EETypePtr ptrEEType)
{
EEType *pEEType = ptrEEType.ToPointer();
return(pEEType->HashCode);
}
private static void CreateInstanceGCDesc(TypeBuilderState state, EEType *pTemplateEEType, EEType *pEEType, int baseSize, int cbGCDesc, bool isValueType, bool isArray, bool isSzArray, int arrayRank)
{
var gcBitfield = state.InstanceGCLayout;
if (isArray)
{
if (cbGCDesc != 0)
{
pEEType->HasGCPointers = true;
if (state.IsArrayOfReferenceTypes)
{
IntPtr *gcDescStart = (IntPtr *)((byte *)pEEType - cbGCDesc);
gcDescStart[0] = new IntPtr(-baseSize);
gcDescStart[1] = new IntPtr(baseSize - sizeof(IntPtr));
gcDescStart[2] = new IntPtr(1);
}
else
{
CreateArrayGCDesc(gcBitfield, arrayRank, isSzArray, ((void **)pEEType) - 1);
}
}
else
{
pEEType->HasGCPointers = false;
}
}
else if (gcBitfield != null)
{
if (cbGCDesc != 0)
{
pEEType->HasGCPointers = true;
CreateGCDesc(gcBitfield, baseSize, isValueType, false, ((void **)pEEType) - 1);
}
else
{
pEEType->HasGCPointers = false;
}
}
else if (pTemplateEEType != null)
{
Buffer.MemoryCopy((byte *)pTemplateEEType - cbGCDesc, (byte *)pEEType - cbGCDesc, cbGCDesc, cbGCDesc);
pEEType->HasGCPointers = pTemplateEEType->HasGCPointers;
}
else
{
pEEType->HasGCPointers = false;
}
}
public static unsafe bool RhIsNullable(EETypePtr ptrEEType)
{
EEType *pEEType = ptrEEType.ToPointer();
return(pEEType->IsNullable);
}
public static unsafe bool RhHasReferenceFields(EETypePtr ptrEEType)
{
EEType *pEEType = ptrEEType.ToPointer();
return(pEEType->HasReferenceFields);
}
// Returns true if the passed in EEType is the EEType for System.Array.
// The binder sets a special CorElementType for this well known type
internal static unsafe bool IsSystemArray(EEType *pEEType)
{
return(pEEType->CorElementType == CorElementType.ELEMENT_TYPE_ARRAY);
}
public static unsafe bool RhHasCctor(EETypePtr ptrEEType)
{
EEType *pEEType = ptrEEType.ToPointer();
return(pEEType->HasCctor);
}
protected override TypeFlags ComputeTypeFlags(TypeFlags mask)
{
TypeFlags flags = 0;
if ((mask & TypeFlags.CategoryMask) != 0)
{
unsafe
{
EEType *eetype = _genericTypeDefinition.ToEETypePtr();
if (eetype->IsValueType)
{
if (eetype->CorElementType == 0)
{
flags |= TypeFlags.ValueType;
}
else
{
if (eetype->BaseType == typeof(System.Enum).TypeHandle.ToEETypePtr())
{
flags |= TypeFlags.Enum;
}
else
{
// Primitive type.
if (eetype->CorElementType <= CorElementType.ELEMENT_TYPE_U8)
{
flags |= (TypeFlags)eetype->CorElementType;
}
else
{
switch (eetype->CorElementType)
{
case CorElementType.ELEMENT_TYPE_I:
flags |= TypeFlags.IntPtr;
break;
case CorElementType.ELEMENT_TYPE_U:
flags |= TypeFlags.UIntPtr;
break;
case CorElementType.ELEMENT_TYPE_R4:
flags |= TypeFlags.Single;
break;
case CorElementType.ELEMENT_TYPE_R8:
flags |= TypeFlags.Double;
break;
default:
throw new BadImageFormatException();
}
}
}
}
}
else if (eetype->IsInterface)
{
flags |= TypeFlags.Interface;
}
else
{
flags |= TypeFlags.Class;
}
}
}
if ((mask & TypeFlags.IsByRefLikeComputed) != 0)
{
flags |= TypeFlags.IsByRefLikeComputed;
unsafe
{
EEType *eetype = _genericTypeDefinition.ToEETypePtr();
if (eetype->IsByRefLike)
{
flags |= TypeFlags.IsByRefLike;
}
}
}
return(flags);
}
/// <summary>
/// Return true if both types are good for simple casting: canonical, no related type via IAT, no generic variance
/// </summary>
internal static bool BothSimpleCasting(EEType *pThis, EEType *pOther)
{
return(((pThis->_usFlags | pOther->_usFlags) & (ushort)EETypeFlags.ComplexCastingMask) == (ushort)EETypeKind.CanonicalEEType);
}
internal extern static unsafe IntPtr RhpGetICastableGetImplTypeMethod(EEType *pEEType);
internal extern static unsafe IntPtr RhpGetICastableIsInstanceOfInterfaceMethod(EEType *pEEType);
internal extern static unsafe EEType *RhpGetNullableEEType(EEType *pEEType);
internal extern static unsafe byte RhpGetNullableEETypeValueOffset(EEType *pEEType);
internal void SetToCloneOf(EEType *pOrigType)
{
Debug.Assert((_usFlags & (ushort)EETypeFlags.EETypeKindMask) == 0, "should be a canonical type");
_usFlags |= (ushort)EETypeKind.ClonedEEType;
_relatedType._pCanonicalType = pOrigType;
}
public static unsafe bool RhIsDynamicType(EETypePtr ptrEEType)
{
EEType *pEEType = ptrEEType.ToPointer();
return(pEEType->IsDynamicType);
}
internal static unsafe void SetEEType(IntPtr obj, EEType *type)
{
Platform.CopyMemory(obj, (IntPtr)(&type), (ulong)sizeof(IntPtr));
}
public static unsafe bool RhIsArray(EETypePtr ptrEEType)
{
EEType *pEEType = ptrEEType.ToPointer();
return(pEEType->IsArray);
}
/// <summary>
/// Add the results of a CastableObject call to the cache if possible. (OOM errors may cause caching failure. An OOM is specified not
/// to introduce new failure points though.)
/// </summary>
internal static unsafe void AddToCastableCache(ICastableObject castableObject, EEType *interfaceType, object objectForType)
{
CastableObjectCacheEntry <object>[] cache = Unsafe.As <CastableObject>(castableObject).Cache;
bool setNewCache = false;
// If there is no cache, allocate one
if (cache == null)
{
try
{
cache = new CastableObjectCacheEntry <object> [8];
}
catch (OutOfMemoryException)
{
// Failed to allocate a cache. That is fine, simply return.
return;
}
setNewCache = true;
}
// Expand old cache if it isn't big enough.
if (GetCachePopulation(cache) > (cache.Length / 2))
{
setNewCache = true;
CastableObjectCacheEntry <object>[] oldCache = cache;
try
{
cache = new CastableObjectCacheEntry <object> [oldCache.Length * 2];
}
catch (OutOfMemoryException)
{
// Failed to allocate a bigger cache. That is fine, keep the old one.
}
for (int i = 0; i < oldCache.Length; i++)
{
if (oldCache[i].Key != default(IntPtr))
{
AddToExistingCache(cache, oldCache[i].Key, oldCache[i].Value);
}
}
}
AddToExistingCache(cache, new IntPtr(interfaceType), objectForType);
if (setNewCache)
{
Unsafe.As <CastableObject>(castableObject).Cache = cache;
}
return;
}
public static unsafe EETypePtr RhGetNullableType(EETypePtr ptrEEType)
{
EEType *pEEType = ptrEEType.ToPointer();
return(new EETypePtr((IntPtr)pEEType->GetNullableType()));
}
internal static unsafe object GetCastableTargetIfPossible(ICastableObject castableObject, EEType *interfaceType, bool produceException, ref Exception exception)
{
CastableObjectCacheEntry <object>[] cache = Unsafe.As <CastableObject>(castableObject).Cache;
object targetObjectInitial = null;
if (cache != null)
{
targetObjectInitial = CacheLookup(cache, new IntPtr(interfaceType));
if (targetObjectInitial != null)
{
if (targetObjectInitial != s_castFailCanary)
{
return(targetObjectInitial);
}
else if (!produceException)
{
return(null);
}
}
}
// Call into the object to determine if the runtime can perform the cast. This will return null if it fails.
object targetObject = castableObject.CastToInterface(new EETypePtr(new IntPtr(interfaceType)), produceException, out exception);
// If the target object is null, and that result has already been cached, just return null now.
// Otherwise, we need to store the canary in the cache so future failing "is" checks can be fast
if (targetObject == null)
{
if (targetObjectInitial != null)
{
return(null);
}
else
{
targetObject = s_castFailCanary;
}
}
InternalCalls.RhpAcquireCastCacheLock();
// Assuming we reach here, we should attempt to add the newly discovered targetObject to the per-object cache
// First, check to see if something is already there
// we may have replaced the cache object since the earlier acquisition in this method. Re-acquire the cache object
// here.
cache = Unsafe.As <CastableObject>(castableObject).Cache;
object targetObjectInCache = null;
if (cache != null)
{
targetObjectInCache = CacheLookup(cache, new IntPtr(interfaceType));
}
if (targetObjectInCache == null)
{
// If the target object still isn't in the cache by this point, add it now
AddToCastableCache(castableObject, interfaceType, targetObject);
targetObjectInCache = targetObject;
}
InternalCalls.RhpReleaseCastCacheLock();
if (targetObjectInCache != s_castFailCanary)
{
return(targetObjectInCache);
}
else
{
return(null);
}
}
public static unsafe byte RhGetCorElementType(EETypePtr ptrEEType)
{
EEType *pEEType = ptrEEType.ToPointer();
return((byte)pEEType->CorElementType);
}
public static unsafe EETypePtr RhGetRelatedParameterType(EETypePtr ptrEEType)
{
EEType *pEEType = ptrEEType.ToPointer();
return(new EETypePtr((IntPtr)pEEType->RelatedParameterType));
}
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;
bool isAbstractClass;
#if EETYPE_TYPE_MANAGER
IntPtr typeManager = IntPtr.Zero;
#endif
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;
isAbstractClass = pTemplateEEType->IsAbstract && !pTemplateEEType->IsInterface;
#if EETYPE_TYPE_MANAGER
typeManager = pTemplateEEType->PointerToTypeManager;
#endif
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;
isAbstractClass = false;
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;
isAbstractClass = (state.TypeBeingBuilt is MetadataType) &&
((MetadataType)state.TypeBeingBuilt).IsAbstract &&
!state.TypeBeingBuilt.IsInterface;
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;
}
if (isAbstractClass)
{
rareFlags |= (uint)EETypeRareFlags.IsAbstractClassFlag;
}
else
{
rareFlags &= ~(uint)EETypeRareFlags.IsAbstractClassFlag;
}
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;
#if EETYPE_TYPE_MANAGER
pEEType->PointerToTypeManager = typeManager;
#endif
// 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.GetIntPtrUNSAFE());
#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);
}
}
}
}
public static unsafe EETypePtr RhGetNonArrayBaseType(EETypePtr ptrEEType)
{
EEType *pEEType = ptrEEType.ToPointer();
return(new EETypePtr((IntPtr)pEEType->NonArrayBaseType));
}
internal unsafe extern static void RhUnbox(object obj, void *pData, EEType *pUnboxToEEType);
public static unsafe ushort RhGetComponentSize(EETypePtr ptrEEType)
{
EEType *pEEType = ptrEEType.ToPointer();
return(pEEType->ComponentSize);
}
internal unsafe extern static bool RhpHasDispatchMap(EEType *pEETypen);
public static unsafe uint RhGetNumInterfaces(EETypePtr ptrEEType)
{
EEType *pEEType = ptrEEType.ToPointer();
return((uint)pEEType->NumInterfaces);
}
private static bool ShouldTypedClauseCatchThisException(object exception, EEType* pClauseType)
{
if (TypeCast.IsInstanceOfClass(exception, pClauseType) != null)
return true;
if (s_pLowLevelObjectType == null)
{
// TODO: Avoid allocating here as that may fail
s_pLowLevelObjectType = new System.Object().EEType;
}
// This allows the typical try { } catch { }--which expands to a typed catch of System.Object--to work on
// all objects when the clause is in the low level runtime code. This special case is needed because
// objects from foreign type systems are sometimes throw back up at runtime code and this is the only way
// to catch them outside of having a filter with no type check in it, which isn't currently possible to
// write in C#. See https://github.com/dotnet/roslyn/issues/4388
if (pClauseType->IsEquivalentTo(s_pLowLevelObjectType))
return true;
return false;
}
internal extern static unsafe UInt32 RhpGetEETypeRareFlags(EEType *pEEType);
