| #region Copyright notice and license |
| |
| // Copyright 2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #endregion |
| |
| using System; |
| using System.Diagnostics; |
| using System.Runtime.InteropServices; |
| using System.Threading; |
| using System.Threading.Tasks; |
| using Grpc.Core; |
| using Grpc.Core.Internal; |
| using Grpc.Core.Utils; |
| using NUnit.Framework; |
| |
| namespace Grpc.Core.Tests |
| { |
| public class PInvokeTest |
| { |
| int counter; |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern GRPCCallError grpcsharp_test_callback([MarshalAs(UnmanagedType.FunctionPtr)] CompletionCallbackDelegate callback); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern IntPtr grpcsharp_test_nop(IntPtr ptr); |
| |
| [TestFixtureSetUp] |
| public void Init() |
| { |
| GrpcEnvironment.Initialize(); |
| } |
| |
| [TestFixtureTearDown] |
| public void Cleanup() |
| { |
| GrpcEnvironment.Shutdown(); |
| } |
| |
| /// <summary> |
| /// (~1.26us .NET Windows) |
| /// </summary> |
| [Test] |
| public void CompletionQueueCreateDestroyBenchmark() |
| { |
| BenchmarkUtil.RunBenchmark( |
| 100000, 1000000, |
| () => |
| { |
| CompletionQueueSafeHandle cq = CompletionQueueSafeHandle.Create(); |
| cq.Dispose(); |
| }); |
| } |
| |
| /// <summary> |
| /// Approximate results: |
| /// (~80ns Mono Linux) |
| /// (~110ns .NET Windows) |
| /// </summary> |
| [Test] |
| public void NativeCallbackBenchmark() |
| { |
| CompletionCallbackDelegate handler = Handler; |
| |
| counter = 0; |
| BenchmarkUtil.RunBenchmark( |
| 1000000, 10000000, |
| () => |
| { |
| grpcsharp_test_callback(handler); |
| }); |
| Assert.AreNotEqual(0, counter); |
| } |
| |
| /// <summary> |
| /// Creating a new native-to-managed callback has significant overhead |
| /// compared to using an existing one. We need to be aware of this. |
| /// (~50us on Mono Linux!!!) |
| /// (~1.1us on .NET Windows) |
| /// </summary> |
| [Test] |
| public void NewNativeCallbackBenchmark() |
| { |
| counter = 0; |
| BenchmarkUtil.RunBenchmark( |
| 10000, 10000, |
| () => |
| { |
| grpcsharp_test_callback(new CompletionCallbackDelegate(Handler)); |
| }); |
| Assert.AreNotEqual(0, counter); |
| } |
| |
| /// <summary> |
| /// Tests overhead of a simple PInvoke call. |
| /// (~46ns .NET Windows) |
| /// </summary> |
| [Test] |
| public void NopPInvokeBenchmark() |
| { |
| BenchmarkUtil.RunBenchmark( |
| 1000000, 100000000, |
| () => |
| { |
| grpcsharp_test_nop(IntPtr.Zero); |
| }); |
| } |
| |
| private void Handler(bool success, IntPtr ptr) |
| { |
| counter++; |
| } |
| } |
| } |