298 lines
9.0 KiB
C#
298 lines
9.0 KiB
C#
//
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// ThreadPoolTest.cs
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//
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// Authors:
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// Marek Safar <marek.safar@gmail.com>
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//
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// Copyright (C) 2013 Xamarin Inc (http://www.xamarin.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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//
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using System;
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using System.Diagnostics;
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using System.Threading;
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using NUnit.Framework;
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namespace MonoTests.System.Threading
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{
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[TestFixture]
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public class ThreadPoolTests
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{
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int minWorkerThreads;
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int minCompletionPortThreads;
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int maxWorkerThreads;
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int maxCompletionPortThreads;
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[SetUp]
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public void SetUp ()
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{
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ThreadPool.GetMinThreads (out minWorkerThreads, out minCompletionPortThreads);
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ThreadPool.GetMaxThreads (out maxWorkerThreads, out maxCompletionPortThreads);
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}
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[TearDown]
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public void TearDown ()
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{
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ThreadPool.SetMinThreads (minWorkerThreads, minCompletionPortThreads);
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ThreadPool.SetMaxThreads (maxWorkerThreads, maxCompletionPortThreads);
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}
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[Test]
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public void RegisterWaitForSingleObject_InvalidArguments ()
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{
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try {
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ThreadPool.RegisterWaitForSingleObject (null, delegate {}, new object (), 100, false);
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Assert.Fail ("#1");
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} catch (ArgumentNullException) {
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}
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try {
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ThreadPool.RegisterWaitForSingleObject (new Mutex (), null, new object (), 100, false);
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Assert.Fail ("#2");
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} catch (ArgumentNullException) {
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}
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}
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[Test]
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public void UnsafeQueueUserWorkItem_InvalidArguments ()
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{
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try {
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ThreadPool.UnsafeQueueUserWorkItem (null, 1);
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Assert.Fail ("#1");
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} catch (ArgumentNullException) {
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}
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}
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[Test]
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public void QueueUserWorkItem ()
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{
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int n = 100000;
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int total = 0, sum = 0;
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for (int i = 0; i < n; ++i) {
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if (i % 2 == 0)
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ThreadPool.QueueUserWorkItem (_ => { Interlocked.Decrement (ref sum); Interlocked.Increment (ref total); });
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else
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ThreadPool.QueueUserWorkItem (_ => { Interlocked.Increment (ref sum); Interlocked.Increment (ref total); });
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}
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var sw = Stopwatch.StartNew ();
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while ((total != n || sum != 0) && sw.Elapsed.TotalSeconds < 60)
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Thread.Sleep (1000);
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Assert.IsTrue (total == n, "#1");
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Assert.IsTrue (sum == 0, "#2");
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}
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event WaitCallback e;
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[Test]
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public void UnsafeQueueUserWorkItem_MulticastDelegate ()
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{
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CountdownEvent ev = new CountdownEvent (2);
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e += delegate {
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ev.Signal ();
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};
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e += delegate {
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ev.Signal ();
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};
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ThreadPool.UnsafeQueueUserWorkItem (e, null);
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Assert.IsTrue (ev.Wait (3000));
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}
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[Test]
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public void SetAndGetMinThreads ()
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{
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int workerThreads, completionPortThreads;
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int workerThreads_new, completionPortThreads_new;
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ThreadPool.GetMinThreads (out workerThreads, out completionPortThreads);
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Assert.IsTrue (workerThreads > 0, "#1");
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Assert.IsTrue (completionPortThreads > 0, "#2");
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workerThreads_new = workerThreads == 1 ? 2 : 1;
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completionPortThreads_new = completionPortThreads == 1 ? 2 : 1;
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ThreadPool.SetMinThreads (workerThreads_new, completionPortThreads_new);
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ThreadPool.GetMinThreads (out workerThreads, out completionPortThreads);
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Assert.IsTrue (workerThreads == workerThreads_new, "#3");
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Assert.IsTrue (completionPortThreads == completionPortThreads_new, "#4");
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}
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[Test]
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public void SetAndGetMaxThreads ()
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{
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int cpuCount = Environment.ProcessorCount;
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int workerThreads, completionPortThreads;
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int workerThreads_new, completionPortThreads_new;
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ThreadPool.GetMaxThreads (out workerThreads, out completionPortThreads);
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Assert.IsTrue (workerThreads > 0, "#1");
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Assert.IsTrue (completionPortThreads > 0, "#2");
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workerThreads_new = workerThreads == cpuCount ? cpuCount + 1 : cpuCount;
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completionPortThreads_new = completionPortThreads == cpuCount ? cpuCount + 1 : cpuCount;
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ThreadPool.SetMaxThreads (workerThreads_new, completionPortThreads_new);
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ThreadPool.GetMaxThreads (out workerThreads, out completionPortThreads);
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Assert.IsTrue (workerThreads == workerThreads_new, "#3");
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Assert.IsTrue (completionPortThreads == completionPortThreads_new, "#4");
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}
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[Test]
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public void SetMaxPossibleThreads ()
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{
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var maxPossibleThreads = 0x7fff;
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int maxWt, macCpt;
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ThreadPool.SetMaxThreads (maxPossibleThreads, maxPossibleThreads);
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ThreadPool.GetMaxThreads (out maxWt, out macCpt);
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Assert.AreEqual (maxPossibleThreads, maxWt);
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Assert.AreEqual (maxPossibleThreads, macCpt);
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ThreadPool.SetMaxThreads (maxPossibleThreads + 1, maxPossibleThreads + 1);
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ThreadPool.GetMaxThreads (out maxWt, out macCpt);
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Assert.AreEqual (maxPossibleThreads, maxWt);
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Assert.AreEqual (maxPossibleThreads, macCpt);
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}
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[Test]
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public void GetAvailableThreads ()
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{
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ManualResetEvent mre = new ManualResetEvent (false);
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var sw = Stopwatch.StartNew ();
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int i, workerThreads, completionPortThreads;
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try {
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Assert.IsTrue (ThreadPool.SetMaxThreads (Environment.ProcessorCount, Environment.ProcessorCount));
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while (true) {
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ThreadPool.GetAvailableThreads (out workerThreads, out completionPortThreads);
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if (workerThreads == 0)
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break;
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Console.WriteLine ("workerThreads = {0}, completionPortThreads = {1}", workerThreads, completionPortThreads);
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if (sw.Elapsed.TotalSeconds >= 10)
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Assert.Fail ("did not reach 0 available threads");
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ThreadPool.QueueUserWorkItem (GetAvailableThreads_Callback, mre);
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Thread.Sleep (1);
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}
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} finally {
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mre.Set ();
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}
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}
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void GetAvailableThreads_Callback (object state)
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{
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ManualResetEvent mre = (ManualResetEvent) state;
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if (mre.WaitOne (0))
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return;
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ThreadPool.QueueUserWorkItem (GetAvailableThreads_Callback, mre);
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ThreadPool.QueueUserWorkItem (GetAvailableThreads_Callback, mre);
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ThreadPool.QueueUserWorkItem (GetAvailableThreads_Callback, mre);
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ThreadPool.QueueUserWorkItem (GetAvailableThreads_Callback, mre);
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mre.WaitOne ();
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}
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[Test]
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public void AsyncLocalCapture ()
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{
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var asyncLocal = new AsyncLocal<int>();
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asyncLocal.Value = 1;
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int var_0, var_1, var_2, var_3;
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var_0 = var_1 = var_2 = var_3 = 99;
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var cw = new CountdownEvent (4);
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var evt = new AutoResetEvent (false);
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ThreadPool.QueueUserWorkItem(state => {
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var_0 = asyncLocal.Value;
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cw.Signal ();
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}, null);
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ThreadPool.UnsafeQueueUserWorkItem(state => {
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var_1 = asyncLocal.Value;
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cw.Signal ();
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}, null);
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ThreadPool.RegisterWaitForSingleObject (evt, (state, to) => {
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var_2 = asyncLocal.Value;
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cw.Signal ();
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}, null, millisecondsTimeOutInterval: 1, executeOnlyOnce: true);
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ThreadPool.UnsafeRegisterWaitForSingleObject (evt, (state, to) => {
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var_3 = asyncLocal.Value;
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cw.Signal ();
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}, null, millisecondsTimeOutInterval: 1, executeOnlyOnce: true);
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Assert.IsTrue (cw.Wait (2000), "cw_wait");
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Assert.AreEqual (1, var_0, "var_0");
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Assert.AreEqual (0, var_1, "var_1");
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Assert.AreEqual (1, var_2, "var_2");
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Assert.AreEqual (0, var_3, "var_3");
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}
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#if !MOBILE
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// This is test related to bug https://bugzilla.xamarin.com/show_bug.cgi?id=41294.
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// The bug is that the performance counters return 0.
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// "Work Items Added" and "# of Threads" are fixed, the others are not.
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[Test]
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public void PerformanceCounter_WorkItems ()
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{
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var workItems = new PerformanceCounter ("Mono Threadpool", "Work Items Added");
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var threads = new PerformanceCounter ("Mono Threadpool", "# of Threads");
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var workItems0 = workItems.NextValue();
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int N = 99;
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for (var i = 0; i < N; i++)
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ThreadPool.QueueUserWorkItem (_ => {});
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var workItems1 = workItems.NextValue();
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var threads0 = threads.NextValue();
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//Console.WriteLine ("workItems0:{0} workItems1:{1}", workItems0, workItems1);
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//Console.WriteLine ("threads:{0}", threads0);
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AssertHelper.GreaterOrEqual ((int)(workItems1 - workItems0), N, "#1");
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Assert.IsTrue (threads0 > 0, "#2");
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}
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#endif
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[Test]
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public void SetMinThreads ()
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{
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int workerThreads, cpThreads;
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int expectedWt = 64, expectedCpt = 64;
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bool set = ThreadPool.SetMinThreads (expectedWt, expectedCpt);
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ThreadPool.GetMinThreads (out workerThreads, out cpThreads);
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Assert.IsTrue (set, "#1");
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Assert.AreEqual (expectedWt, workerThreads, "#2");
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Assert.AreEqual (expectedCpt, cpThreads, "#3");
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}
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}
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}
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