Beispiel #1
0
        /// <summary>
        /// Get a pointer to a pointer to the gc static field data of a type. This function works for all generic types
        /// </summary>
        public IntPtr TryGetGcStaticFieldData(RuntimeTypeHandle runtimeTypeHandle)
        {
            unsafe
            {
                // Non-generic, non-dynamic static data is found via the FieldAccessMap
                EEType *typeAsEEType = runtimeTypeHandle.ToEETypePtr();
                // Non-generic, non-dynamic types need special handling.
                Debug.Assert(typeAsEEType->IsDynamicType || typeAsEEType->IsGeneric);
            }

            // Search hashtable for static entry
            ExternalReferencesTable staticInfoLookup;
            var parser = GetStaticInfo(runtimeTypeHandle, out staticInfoLookup);

            if (!parser.IsNull)
            {
                var index = parser.GetUnsignedForBagElementKind(BagElementKind.GcStaticData);

                return(index.HasValue ? staticInfoLookup.GetIntPtrFromIndex(index.Value) : IntPtr.Zero);
            }

            // Not found in hashtable... must be a dynamically created type
            Debug.Assert(runtimeTypeHandle.IsDynamicType());
            return(RuntimeAugments.GetGcStaticFieldData(runtimeTypeHandle));
        }