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#region Copyright notice and license
// Copyright 2015-2016, 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
{
static readonly NativeMethods Native = NativeMethods.Get();
int counter;
/// <summary>
/// (~1.26us .NET Windows)
/// </summary>
[Test]
public void CompletionQueueCreateDestroyBenchmark()
{
GrpcEnvironment.AddRef(); // completion queue requires gRPC environment being initialized.
BenchmarkUtil.RunBenchmark(
10, 10,
() =>
{
CompletionQueueSafeHandle cq = CompletionQueueSafeHandle.Create();
cq.Dispose();
});
GrpcEnvironment.Release();
}
/// <summary>
/// Approximate results:
/// (~80ns Mono Linux)
/// (~110ns .NET Windows)
/// </summary>
[Test]
public void NativeCallbackBenchmark()
{
OpCompletionDelegate handler = Handler;
counter = 0;
BenchmarkUtil.RunBenchmark(
1000000, 10000000,
() =>
{
Native.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,
() =>
{
Native.grpcsharp_test_callback(new OpCompletionDelegate(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,
() =>
{
Native.grpcsharp_test_nop(IntPtr.Zero);
});
}
private void Handler(bool success)
{
counter++;
}
}
}
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