/// <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>
/// 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
}
