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.Runtime.InteropServices;
20 using BenchmarkDotNet.Attributes;
21 using Grpc.Core.Internal;
22 
23 namespace Grpc.Microbenchmarks
24 {
25     public class PInvokeByteArrayBenchmark : CommonThreadedBase
26     {
27         static readonly NativeMethods Native = NativeMethods.Get();
28 
29         protected override bool NeedsEnvironment => false;
30 
31 
32         [Params(0)]
33         public int PayloadSize { get; set; }
34 
35         const int Iterations = 5 * 1000 * 1000;  // High number to make the overhead of RunConcurrent negligible.
36         [Benchmark(OperationsPerInvoke = Iterations)]
AllocFree()37         public void AllocFree()
38         {
39             RunConcurrent(RunBody);
40         }
41 
RunBody()42         private void RunBody()
43         {
44             var payload = new byte[PayloadSize];
45             for (int i = 0; i < Iterations; i++)
46             {
47                 var gcHandle = GCHandle.Alloc(payload, GCHandleType.Pinned);
48                 var payloadPtr = gcHandle.AddrOfPinnedObject();
49                 Native.grpcsharp_test_nop(payloadPtr);
50                 gcHandle.Free();
51             }
52         }
53     }
54 }
55