C# NodeFactory.VirtualMethodUse方法代码示例

        protected override DependencyList ComputeNonRelocationBasedDependencies(NodeFactory factory)
        {
            DefType closestDefType = _type.GetClosestDefType();

            DependencyList dependencyList = new DependencyList();
            if (_type.RuntimeInterfaces.Length > 0)
            {
                dependencyList.Add(factory.InterfaceDispatchMap(_type), "Interface dispatch map");

                // If any of the implemented interfaces have variance, calls against compatible interface methods
                // could result in interface methods of this type being used (e.g. IEnumberable<object>.GetEnumerator()
                // can dispatch to an implementation of IEnumerable<string>.GetEnumerator()).
                // For now, we will not try to optimize this and we will pretend all interface methods are necessary.
                
                foreach (var implementedInterface in _type.RuntimeInterfaces)
                {
                    if (implementedInterface.HasVariance)
                    {
                        foreach (var interfaceMethod in implementedInterface.GetAllMethods())
                        {
                            if (interfaceMethod.Signature.IsStatic)
                                continue;

                            MethodDesc implMethod = closestDefType.ResolveInterfaceMethodToVirtualMethodOnType(interfaceMethod);
                            if (implMethod != null)
                            {
                                dependencyList.Add(factory.VirtualMethodUse(interfaceMethod), "Variant interface method");
                                dependencyList.Add(factory.VirtualMethodUse(implMethod), "Variant interface method");
                            }
                        }
                    }
                }
            }

            if (_type.IsArray)
            {
                // Array EEType depends on System.Array's virtuals. Array EETypes don't point to
                // their base type (i.e. there's no reloc based dependency making this "just work").
                dependencyList.Add(factory.ConstructedTypeSymbol(_type.BaseType), "Array base type");
            }

            dependencyList.Add(factory.VTable(_type), "VTable");

            if (closestDefType.HasGenericDictionarySlot())
            {
                // Generic dictionary pointer is part of the vtable and as such it gets only laid out
                // at the final data emission phase. We need to report it as a non-relocation dependency.
                dependencyList.Add(factory.TypeGenericDictionary(closestDefType), "Type generic dictionary");
            }

            // Include the optional fields by default. We don't know if optional fields will be needed until
            // all of the interface usage has been stabilized. If we end up not needing it, the EEType node will not
            // generate any relocs to it, and the optional fields node will instruct the object writer to skip
            // emitting it.
            dependencyList.Add(_optionalFieldsNode, "Optional fields");
            
            return dependencyList;
        }

        protected override DependencyList ComputeNonRelocationBasedDependencies(NodeFactory factory)
        {
            DependencyList dependencyList = new DependencyList();
            if (_type.RuntimeInterfaces.Length > 0)
            {
                dependencyList.Add(factory.InterfaceDispatchMap(_type), "Interface dispatch map");

                // If any of the implemented interfaces have variance, calls against compatible interface methods
                // could result in interface methods of this type being used (e.g. IEnumberable<object>.GetEnumerator()
                // can dispatch to an implementation of IEnumerable<string>.GetEnumerator()).
                // For now, we will not try to optimize this and we will pretend all interface methods are necessary.
                DefType defType = _type.GetClosestDefType();
                foreach (var implementedInterface in defType.RuntimeInterfaces)
                {
                    if (implementedInterface.HasVariance)
                    {
                        foreach (var interfaceMethod in implementedInterface.GetAllVirtualMethods())
                        {
                            MethodDesc implMethod = defType.ResolveInterfaceMethodToVirtualMethodOnType(interfaceMethod);
                            if (implMethod != null)
                            {
                                dependencyList.Add(factory.VirtualMethodUse(interfaceMethod), "Variant interface method");
                                dependencyList.Add(factory.VirtualMethodUse(implMethod), "Variant interface method");
                            }
                        }
                    }
                }
            }

            if (_type.IsArray)
            {
                // Array EEType depends on System.Array's virtuals. Array EETypes don't point to
                // their base type (i.e. there's no reloc based dependency making this "just work").
                dependencyList.Add(factory.ConstructedTypeSymbol(_type.BaseType), "Array base type");
            }

            dependencyList.Add(factory.VTable(_type), "VTable");

            return dependencyList;
        }

 protected override DependencyList ComputeNonRelocationBasedDependencies(NodeFactory context)
 {
     if (Helper.Id == ReadyToRunHelperId.VirtualCall)
     {
         DependencyList dependencyList = new DependencyList();
         dependencyList.Add(context.VirtualMethodUse((MethodDesc)Helper.Target), "ReadyToRun Virtual Method Call");
         return dependencyList;
     }
     else
     {
         return null;
     }
 }

 protected override DependencyList ComputeNonRelocationBasedDependencies(NodeFactory factory)
 {
     if (_id == ReadyToRunHelperId.VirtualCall)
     {
         DependencyList dependencyList = new DependencyList();
         dependencyList.Add(factory.VirtualMethodUse((MethodDesc)_target), "ReadyToRun Virtual Method Call");
         dependencyList.Add(factory.VTable(((MethodDesc)_target).OwningType), "ReadyToRun Virtual Method Call Target VTable");
         return dependencyList;
     }
     else if (_id == ReadyToRunHelperId.ResolveVirtualFunction)
     {
         DependencyList dependencyList = new DependencyList();
         dependencyList.Add(factory.VirtualMethodUse((MethodDesc)_target), "ReadyToRun Virtual Method Address Load");
         return dependencyList;
     }
     else
     {
         return null;
     }
 }

        public override IEnumerable<CombinedDependencyListEntry> GetConditionalStaticDependencies(NodeFactory factory)
        {
            DefType defType = _type.GetClosestDefType();

            foreach (MethodDesc decl in defType.EnumAllVirtualSlots())
            {
                MethodDesc impl = defType.FindVirtualFunctionTargetMethodOnObjectType(decl);
                if (impl.OwningType == defType && !impl.IsAbstract)
                {
                    MethodDesc canonImpl = impl.GetCanonMethodTarget(CanonicalFormKind.Specific);
                    yield return new CombinedDependencyListEntry(factory.MethodEntrypoint(canonImpl, _type.IsValueType), factory.VirtualMethodUse(decl), "Virtual method");
                }
            }

            Debug.Assert(
                _type == defType ||
                ((System.Collections.IStructuralEquatable)defType.RuntimeInterfaces).Equals(_type.RuntimeInterfaces,
                EqualityComparer<DefType>.Default));

            // Add conditional dependencies for interface methods the type implements. For example, if the type T implements
            // interface IFoo which has a method M1, add a dependency on T.M1 dependent on IFoo.M1 being called, since it's
            // possible for any IFoo object to actually be an instance of T.
            foreach (DefType interfaceType in defType.RuntimeInterfaces)
            {
                Debug.Assert(interfaceType.IsInterface);

                foreach (MethodDesc interfaceMethod in interfaceType.GetAllMethods())
                {
                    if (interfaceMethod.Signature.IsStatic)
                        continue;

                    MethodDesc implMethod = defType.ResolveInterfaceMethodToVirtualMethodOnType(interfaceMethod);
                    if (implMethod != null)
                    {
                        yield return new CombinedDependencyListEntry(factory.VirtualMethodUse(implMethod), factory.ReadyToRunHelper(ReadyToRunHelperId.VirtualCall, interfaceMethod), "Interface method");
                        yield return new CombinedDependencyListEntry(factory.VirtualMethodUse(implMethod), factory.ReadyToRunHelper(ReadyToRunHelperId.ResolveVirtualFunction, interfaceMethod), "Interface method address");
                    }
                }
            }
        }

        public override IEnumerable<CombinedDependencyListEntry> GetConditionalStaticDependencies(NodeFactory factory)
        {
            if (_type is MetadataType)
            {
                foreach (MethodDesc decl in VirtualFunctionResolution.EnumAllVirtualSlots((MetadataType)_type))
                {
                    MethodDesc impl = VirtualFunctionResolution.FindVirtualFunctionTargetMethodOnObjectType(decl, (MetadataType)_type);
                    if (impl.OwningType == _type && !impl.IsAbstract)
                    {
                        yield return new DependencyNodeCore<NodeFactory>.CombinedDependencyListEntry(factory.MethodEntrypoint(impl), factory.VirtualMethodUse(decl), "Virtual method");
                    }
                }

                // Add conditional dependencies for interface methods the type implements. For example, if the type T implements
                // interface IFoo which has a method M1, add a dependency on T.M1 dependent on IFoo.M1 being called, since it's
                // possible for any IFoo object to actually be an instance of T.
                foreach (DefType interfaceType in _type.RuntimeInterfaces)
                {
                    Debug.Assert(interfaceType.IsInterface);

                    foreach (MethodDesc interfaceMethod in interfaceType.GetMethods())
                    {
                        Debug.Assert(interfaceMethod.IsVirtual);
                        MethodDesc implMethod = VirtualFunctionResolution.ResolveInterfaceMethodToVirtualMethodOnType(interfaceMethod, _type.GetClosestMetadataType());
                        if (implMethod != null)
                        {
                            yield return new DependencyNodeCore<NodeFactory>.CombinedDependencyListEntry(factory.VirtualMethodUse(implMethod), factory.ReadyToRunHelper(ReadyToRunHelperId.InterfaceDispatch, interfaceMethod), "Interface method");
                        }
                    }
                }
            }
        }

 public override IEnumerable<CombinedDependencyListEntry> GetConditionalStaticDependencies(NodeFactory factory)
 {
     if (_type is MetadataType)
     {
         foreach (MethodDesc decl in VirtualFunctionResolution.EnumAllVirtualSlots((MetadataType)_type))
         {
             MethodDesc impl = VirtualFunctionResolution.FindVirtualFunctionTargetMethodOnObjectType(decl, (MetadataType)_type);
             if (impl.OwningType == _type && !impl.IsAbstract)
             {
                 yield return new DependencyNodeCore<NodeFactory>.CombinedDependencyListEntry(factory.MethodEntrypoint(impl), factory.VirtualMethodUse(decl), "Virtual method");
             }
         }
     }
 }