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      1 #region Copyright notice and license
      2 
      3 // Copyright 2015 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 using System.Collections.Concurrent;
     21 using System.Diagnostics;
     22 using System.IO;
     23 using System.Reflection;
     24 using System.Runtime.InteropServices;
     25 using System.Threading;
     26 
     27 using Grpc.Core.Logging;
     28 using Grpc.Core.Utils;
     29 
     30 namespace Grpc.Core.Internal
     31 {
     32     internal delegate void NativeCallbackTestDelegate(bool success);
     33 
     34     /// <summary>
     35     /// Provides access to all native methods provided by <c>NativeExtension</c>.
     36     /// An extra level of indirection is added to P/Invoke calls to allow intelligent loading
     37     /// of the right configuration of the native extension based on current platform, architecture etc.
     38     /// </summary>
     39     internal partial class NativeMethods
     40     {
     41         // Signatures of native methods are generated from a template
     42         // and can be found in NativeMethods.Generated.cs
     43 
     44         /// <summary>
     45         /// Gets singleton instance of this class.
     46         /// </summary>
     47         public static NativeMethods Get()
     48         {
     49             return NativeExtension.Get().NativeMethods;
     50         }
     51 
     52         static T GetMethodDelegate<T>(UnmanagedLibrary library)
     53             where T : class
     54         {
     55             var methodName = RemoveStringSuffix(typeof(T).Name, "_delegate");
     56             return library.GetNativeMethodDelegate<T>(methodName);
     57         }
     58 
     59         static string RemoveStringSuffix(string str, string toRemove)
     60         {
     61             if (!str.EndsWith(toRemove))
     62             {
     63                 return str;
     64             }
     65             return str.Substring(0, str.Length - toRemove.Length);
     66         }
     67     }
     68 }
     69