1 #region Copyright notice and license 2 3 // Copyright 2019 The gRPC Authors 4 // 5 // Licensed under the Apache License, Version 2.0 (the "License"); 6 // you may not use this file except in compliance with the License. 7 // You may obtain a copy of the License at 8 // 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 11 // Unless required by applicable law or agreed to in writing, software 12 // distributed under the License is distributed on an "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 // See the License for the specific language governing permissions and 15 // limitations under the License. 16 17 #endregion 18 19 using System; 20 21 namespace Grpc.Core.Internal 22 { 23 /// <summary> 24 /// Use this attribute to mark methods that will be called back from P/Invoke calls. 25 /// iOS (and probably other AOT platforms) needs to have delegates registered. 26 /// Instead of depending on Xamarin.iOS for this, we can just create our own, 27 /// the iOS runtime just checks for the type name. 28 /// See: https://docs.microsoft.com/en-gb/xamarin/ios/internals/limitations#reverse-callbacks 29 /// </summary> 30 [AttributeUsage(AttributeTargets.Method)] 31 internal sealed class MonoPInvokeCallbackAttribute : Attribute 32 { MonoPInvokeCallbackAttribute(Type type)33 public MonoPInvokeCallbackAttribute(Type type) 34 { 35 Type = type; 36 } 37 38 public Type Type { get; private set; } 39 } 40 } 41