100 lines
3.2 KiB
C#
100 lines
3.2 KiB
C#
#region Copyright notice and license
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// Copyright 2015 gRPC authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#endregion
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using System;
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using NUnit.Framework;
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using System.Threading;
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using System.Threading.Tasks;
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namespace Grpc.Core.Tests
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{
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public class ThreadingModelTest
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{
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const string Host = "127.0.0.1";
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MockServiceHelper helper;
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Server server;
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Channel channel;
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[SetUp]
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public void Init()
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{
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helper = new MockServiceHelper(Host);
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server = helper.GetServer();
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server.Start();
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channel = helper.GetChannel();
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}
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[TearDown]
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public void Cleanup()
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{
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channel.ShutdownAsync().Wait();
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server.ShutdownAsync().Wait();
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}
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[Test]
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public void BlockingCallInServerHandlerDoesNotDeadlock()
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{
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helper.UnaryHandler = new UnaryServerMethod<string, string>((request, context) =>
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{
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int recursionDepth = int.Parse(request);
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if (recursionDepth <= 0) {
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return Task.FromResult("SUCCESS");
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}
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var response = Calls.BlockingUnaryCall(helper.CreateUnaryCall(), (recursionDepth - 1).ToString());
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return Task.FromResult(response);
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});
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int maxRecursionDepth = Environment.ProcessorCount * 2; // make sure we have more pending blocking calls than threads in GrpcThreadPool
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Assert.AreEqual("SUCCESS", Calls.BlockingUnaryCall(helper.CreateUnaryCall(), maxRecursionDepth.ToString()));
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}
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[Test]
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public void HandlerDoesNotRunOnGrpcThread()
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{
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helper.UnaryHandler = new UnaryServerMethod<string, string>((request, context) =>
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{
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if (IsRunningOnGrpcThreadPool()) {
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return Task.FromResult("Server handler should not run on gRPC threadpool thread.");
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}
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return Task.FromResult(request);
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});
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Assert.AreEqual("ABC", Calls.BlockingUnaryCall(helper.CreateUnaryCall(), "ABC"));
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}
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[Test]
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public async Task ContinuationDoesNotRunOnGrpcThread()
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{
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helper.UnaryHandler = new UnaryServerMethod<string, string>((request, context) =>
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{
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return Task.FromResult(request);
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});
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await Calls.AsyncUnaryCall(helper.CreateUnaryCall(), "ABC");
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Assert.IsFalse(IsRunningOnGrpcThreadPool());
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}
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private static bool IsRunningOnGrpcThreadPool()
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{
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var threadName = Thread.CurrentThread.Name ?? "";
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return threadName.Contains("grpc");
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}
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}
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}
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