| | | 1 | | using AmbientServices; |
| | | 2 | | using AmbientServices.Utilities; |
| | | 3 | | using System; |
| | | 4 | | using System.Collections.Concurrent; |
| | | 5 | | using System.Collections.Generic; |
| | | 6 | | using System.Diagnostics; |
| | | 7 | | using System.Linq; |
| | | 8 | | using System.Threading; |
| | | 9 | | using System.Threading.Tasks; |
| | | 10 | | |
| | | 11 | | #nullable enable |
| | | 12 | | |
| | | 13 | | namespace AmbientServices.Test |
| | | 14 | | { |
| | | 15 | | [TestClass] |
| | | 16 | | public class TestFifoTaskScheduler |
| | | 17 | | { |
| | 1 | 18 | | private static readonly AmbientService<IAmbientLogger> LoggerBackend = Ambient.GetService<IAmbientLogger>(); |
| | 1 | 19 | | private static readonly AmbientService<IAmbientStatistics> StatisticsBackend = Ambient.GetService<IAmbientStatis |
| | 1 | 20 | | private static readonly AmbientService<IMockCpuUsage> MockCpu = Ambient.GetService<IMockCpuUsage>(); |
| | | 21 | | private static int TasksInlined; |
| | | 22 | | |
| | | 23 | | private static void FifoTaskScheduler_TaskInlined(object? sender, TaskInlinedEventArgs e) |
| | | 24 | | { |
| | 1 | 25 | | Interlocked.Increment(ref TasksInlined); |
| | 1 | 26 | | } |
| | | 27 | | |
| | | 28 | | [TestMethod] |
| | | 29 | | public void UnhandledException() |
| | | 30 | | { |
| | 1 | 31 | | Guid unique = Guid.NewGuid(); |
| | 1 | 32 | | UnhandledExceptionTracker tracker = new(unique); |
| | 1 | 33 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(UnhandledException), priority: ThreadPrio |
| | | 34 | | try |
| | | 35 | | { |
| | 1 | 36 | | FifoTaskScheduler.UnhandledException += tracker.FifoTaskScheduler_UnhandledException; |
| | 1 | 37 | | scheduler.ExecuteAction(() => throw new ExpectedException(nameof(UnhandledException) + ":" + unique)); |
| | 1 | 38 | | } |
| | | 39 | | finally |
| | | 40 | | { |
| | 1 | 41 | | FifoTaskScheduler.UnhandledException -= tracker.FifoTaskScheduler_UnhandledException; |
| | 1 | 42 | | } |
| | 1 | 43 | | Assert.AreEqual(1, tracker.UnhandledExceptions); |
| | 1 | 44 | | Assert.AreEqual(1, tracker.FifoTaskSchedulerCount); |
| | 1 | 45 | | } |
| | | 46 | | [TestMethod] |
| | | 47 | | public void TaskInlinedEvent() |
| | | 48 | | { |
| | | 49 | | try |
| | | 50 | | { |
| | 1 | 51 | | FifoTaskScheduler.TaskInlined += FifoTaskScheduler_TaskInlined; |
| | | 52 | | // force a task to run inline |
| | 1 | 53 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(TaskInlinedEvent), 1, 2, 10); |
| | 1 | 54 | | FifoTaskFactory factory = new(scheduler); |
| | 1 | 55 | | List<Task> tasks = new(); |
| | 1 | 56 | | CancellationTokenSource cts = new(); |
| | 1 | 57 | | for (int i = 0; i < 2000; ++i) |
| | | 58 | | { |
| | 1 | 59 | | FakeWork w = new(i, true); |
| | 1 | 60 | | tasks.Add(factory.StartNew(() => |
| | 1 | 61 | | { |
| | 1 | 62 | | if (TasksInlined > 0) { cts.Cancel(); return Task.CompletedTask; } |
| | 0 | 63 | | return w.DoDelayOnlyWorkAsync(CancellationToken.None).AsTask(); |
| | 1 | 64 | | }, CancellationToken.None, TaskCreationOptions.None, scheduler)); |
| | | 65 | | } |
| | 1 | 66 | | Task.WaitAll(tasks.ToArray()); |
| | 1 | 67 | | if (TasksInlined > 0) return; // this works too! |
| | 0 | 68 | | } |
| | 0 | 69 | | catch (OperationCanceledException) |
| | | 70 | | { |
| | | 71 | | // we expect to get canceled for this test! |
| | 0 | 72 | | return; |
| | | 73 | | } |
| | | 74 | | finally |
| | | 75 | | { |
| | 1 | 76 | | FifoTaskScheduler.TaskInlined -= FifoTaskScheduler_TaskInlined; |
| | 1 | 77 | | } |
| | 0 | 78 | | Assert.Fail("Unable to force task to run inline!"); |
| | 1 | 79 | | } |
| | | 80 | | |
| | | 81 | | [TestMethod] |
| | | 82 | | public async Task RunWithStartNew() |
| | | 83 | | { |
| | | 84 | | //using IDisposable d = LoggerBackend.ScopedLocalOverride(new AmbientTraceLogger()); |
| | 1 | 85 | | List<Task<Task>> tasks = new(); |
| | 1 | 86 | | for (int i = 0; i < 1000; ++i) |
| | | 87 | | { |
| | 1 | 88 | | FakeWork w = new(i, true); |
| | 1 | 89 | | tasks.Add(FifoTaskFactory.Default.StartNew(() => w.DoMixedWorkAsync(CancellationToken.None).AsTask())); |
| | | 90 | | } |
| | 1 | 91 | | await Task.WhenAll(tasks.ToArray()); |
| | 1 | 92 | | foreach (Task<Task> task in tasks) |
| | | 93 | | { |
| | 1 | 94 | | await task.Result; |
| | | 95 | | } |
| | 1 | 96 | | FifoTaskScheduler.Default.Reset(); |
| | 1 | 97 | | } |
| | | 98 | | [TestMethod] |
| | | 99 | | public async Task RunWithFunc() |
| | | 100 | | { |
| | | 101 | | //using IDisposable d = LoggerBackend.ScopedLocalOverride(new AmbientTraceLogger()); |
| | 1 | 102 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(RunWithFunc), priority: ThreadPriority.Hi |
| | 1 | 103 | | List<Task<Task>> tasks = new(); |
| | 1 | 104 | | for (int i = 0; i < 1000; ++i) |
| | | 105 | | { |
| | 1 | 106 | | FakeWork w = new(i, true); |
| | 1 | 107 | | tasks.Add(scheduler.Run(() => w.DoMixedWorkAsync(CancellationToken.None).AsTask())); |
| | | 108 | | } |
| | 1 | 109 | | Task.WaitAll(tasks.ToArray()); |
| | 1 | 110 | | foreach (Task<Task> task in tasks) |
| | | 111 | | { |
| | 1 | 112 | | await task.Result; |
| | | 113 | | } |
| | 1 | 114 | | scheduler.Reset(); |
| | 1 | 115 | | } |
| | | 116 | | [TestMethod] |
| | | 117 | | public async Task RunWithAction() |
| | | 118 | | { |
| | | 119 | | //using IDisposable d = LoggerBackend.ScopedLocalOverride(new AmbientTraceLogger()); |
| | 1 | 120 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(RunWithAction), priority: ThreadPriority. |
| | 1 | 121 | | ConcurrentBag<Task> tasks = new(); |
| | 1 | 122 | | for (int i = 0; i < 1000; ++i) |
| | | 123 | | { |
| | 1 | 124 | | FakeWork w = new(i, true); |
| | 1 | 125 | | tasks.Add(scheduler.Run(() => { tasks.Add(w.DoMixedWorkAsync(CancellationToken.None).AsTask()); })); |
| | | 126 | | } |
| | 1 | 127 | | while (tasks.Count < 1000) |
| | | 128 | | { |
| | 0 | 129 | | await Task.Delay(25); |
| | | 130 | | } |
| | 1 | 131 | | Task.WaitAll(tasks.ToArray()); |
| | 1 | 132 | | scheduler.Reset(); |
| | 1 | 133 | | } |
| | | 134 | | [TestMethod] |
| | | 135 | | public async Task RunFireAndForget() |
| | | 136 | | { |
| | | 137 | | //using IDisposable d = LoggerBackend.ScopedLocalOverride(new AmbientTraceLogger()); |
| | 1 | 138 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(RunFireAndForget), priority: ThreadPriori |
| | 1 | 139 | | ConcurrentBag<Task> tasks = new(); |
| | 1 | 140 | | for (int i = 0; i < 1000; ++i) |
| | | 141 | | { |
| | 1 | 142 | | FakeWork w = new(i, true); |
| | 1 | 143 | | scheduler.FireAndForget(() => tasks.Add(w.DoMixedWorkAsync(CancellationToken.None).AsTask())); |
| | | 144 | | } |
| | 1 | 145 | | while (tasks.Count < 1000) |
| | | 146 | | { |
| | 1 | 147 | | await Task.Delay(25); |
| | | 148 | | } |
| | 1 | 149 | | Task.WaitAll(tasks.ToArray()); |
| | 1 | 150 | | scheduler.Reset(); |
| | 1 | 151 | | } |
| | | 152 | | [TestMethod] |
| | | 153 | | public async Task NoStatsStartNew() |
| | | 154 | | { |
| | 1 | 155 | | using IDisposable d = StatisticsBackend.ScopedLocalOverride(null); |
| | 1 | 156 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(NoStatsStartNew), priority: ThreadPriorit |
| | 1 | 157 | | FifoTaskFactory testFactory = new(scheduler); |
| | 1 | 158 | | List<Task<Task>> tasks = new(); |
| | 1 | 159 | | tasks.Add(scheduler.Run(() => new FakeWork(-1, true).DoMixedWorkAsync(CancellationToken.None).AsTask())); |
| | 1 | 160 | | for (int i = 0; i < 100; ++i) |
| | | 161 | | { |
| | 1 | 162 | | FakeWork w = new(i, true); |
| | 1 | 163 | | tasks.Add(testFactory.StartNew(() => w.DoDelayOnlyWorkAsync(CancellationToken.None).AsTask())); |
| | | 164 | | } |
| | 1 | 165 | | Task.WaitAll(tasks.ToArray()); |
| | 1 | 166 | | foreach (Task<Task> task in tasks) |
| | | 167 | | { |
| | 1 | 168 | | await task.Result; |
| | | 169 | | } |
| | 1 | 170 | | await scheduler.Run(() => new ValueTask()); |
| | 1 | 171 | | scheduler.Reset(); |
| | 1 | 172 | | } |
| | | 173 | | [TestMethod] |
| | | 174 | | public async Task NoStatsRunWithAction() |
| | | 175 | | { |
| | 1 | 176 | | using IDisposable d = StatisticsBackend.ScopedLocalOverride(null); |
| | 1 | 177 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(NoStatsRunWithAction), priority: ThreadPr |
| | 1 | 178 | | FifoTaskFactory testFactory = new(scheduler); |
| | 1 | 179 | | Task? task = null; |
| | 1 | 180 | | await scheduler.Run(() => { task = new FakeWork(1, true).DoDelayOnlyWorkAsync(CancellationToken.None).AsTask |
| | 1 | 181 | | while (task == null) |
| | | 182 | | { |
| | 0 | 183 | | await Task.Delay(25); |
| | | 184 | | } |
| | 1 | 185 | | } |
| | | 186 | | [TestMethod] |
| | | 187 | | public async Task NoStatsFireAndForget() |
| | | 188 | | { |
| | 1 | 189 | | using IDisposable d = StatisticsBackend.ScopedLocalOverride(null); |
| | 1 | 190 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(NoStatsFireAndForget), priority: ThreadPr |
| | 1 | 191 | | FifoTaskFactory testFactory = new(scheduler); |
| | 1 | 192 | | Task? task = null; |
| | 1 | 193 | | scheduler.FireAndForget(() => task = new FakeWork(1, true).DoDelayOnlyWorkAsync(CancellationToken.None).AsTa |
| | 1 | 194 | | while (task == null) |
| | | 195 | | { |
| | 1 | 196 | | await Task.Delay(25); |
| | | 197 | | } |
| | 1 | 198 | | } |
| | | 199 | | [TestMethod] |
| | | 200 | | public void ExecuteWithCatchAndLog() |
| | | 201 | | { |
| | 1 | 202 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(ExecuteWithCatchAndLog)); |
| | 1 | 203 | | scheduler.ExecuteWithCatchAndLog(() => throw new ExpectedException()); |
| | 1 | 204 | | scheduler.ExecuteWithCatchAndLog(() => throw new TaskCanceledException()); |
| | | 205 | | //scheduler.ExecuteWithCatchAndLog(() => throw new ThreadAbortException()); // can't construct this, so can' |
| | 1 | 206 | | } |
| | | 207 | | [TestMethod] |
| | | 208 | | public void Constructors() |
| | | 209 | | { |
| | | 210 | | FifoTaskFactory testFactory; |
| | 1 | 211 | | testFactory = new(CancellationToken.None); |
| | 1 | 212 | | testFactory = new(FifoTaskScheduler.Default); |
| | 1 | 213 | | testFactory = new(TaskCreationOptions.None, TaskContinuationOptions.None); |
| | 1 | 214 | | } |
| | | 215 | | class MockCpuUsage : IMockCpuUsage |
| | | 216 | | { |
| | 1 | 217 | | public float RecentUsage { get; set; } |
| | | 218 | | } |
| | | 219 | | [TestMethod] |
| | | 220 | | public void TooManyWorkers() |
| | | 221 | | { |
| | 1 | 222 | | MockCpuUsage mockCpu = new(); |
| | 1 | 223 | | using IDisposable d = MockCpu.ScopedLocalOverride(mockCpu); |
| | 1 | 224 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(TooManyWorkers), 1, 2, 10); |
| | 1 | 225 | | Assert.IsGreaterThan(0, scheduler.ReadyWorkers); |
| | 1 | 226 | | Assert.AreEqual(0, scheduler.BusyWorkers); |
| | 1 | 227 | | FifoTaskFactory factory = new(scheduler); |
| | 1 | 228 | | List<Task> tasks = new(); |
| | | 229 | | // the scheduler should think the CPU is very high, so it should enter the crazy usage notify |
| | 1 | 230 | | mockCpu.RecentUsage = 1.0f; |
| | 1 | 231 | | for (int i = 0; i < 20; ++i) |
| | | 232 | | { |
| | 1 | 233 | | FakeWork w = new(i, true); |
| | 1 | 234 | | tasks.Add(factory.StartNew(() => w.DoDelayOnlyWorkAsync(CancellationToken.None).AsTask(), CancellationTo |
| | | 235 | | } |
| | 1 | 236 | | Task.WaitAll(tasks.ToArray()); |
| | 1 | 237 | | scheduler.Reset(); |
| | 1 | 238 | | } |
| | | 239 | | [TestMethod] |
| | | 240 | | public async Task ResetManyWorkers() |
| | | 241 | | { |
| | 1 | 242 | | MockCpuUsage mockCpu = new(); |
| | 1 | 243 | | using IDisposable s = StatisticsBackend.ScopedLocalOverride(null); |
| | 1 | 244 | | using IDisposable c = MockCpu.ScopedLocalOverride(mockCpu); |
| | 1 | 245 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(ResetManyWorkers), 1, 100, 10); |
| | 1 | 246 | | DateTime lastScaleUp = scheduler.LastScaleUp; |
| | | 247 | | Debug.Assert(DateTime.UtcNow > lastScaleUp); |
| | 1 | 248 | | DateTime lastScaleDown = scheduler.LastScaleDown; |
| | | 249 | | Debug.Assert(DateTime.UtcNow > lastScaleDown); |
| | 1 | 250 | | DateTime lastReset = scheduler.LastResetTime; |
| | | 251 | | Debug.Assert(DateTime.UtcNow > lastReset); |
| | 1 | 252 | | ConcurrentBag<Task> tasks = new(); |
| | | 253 | | int i; |
| | 1 | 254 | | for (i = 0; i < 250 && scheduler.ReadyWorkers < 3; ++i) |
| | | 255 | | { |
| | 1 | 256 | | FakeWork w = new(i, true); |
| | 1 | 257 | | tasks.Add(scheduler.Run(() => w.DoMixedWorkAsync(CancellationToken.None).AsTask())); // note that |
| | | 258 | | } |
| | | 259 | | // reset the scheduler |
| | 1 | 260 | | scheduler.Reset(); |
| | | 261 | | |
| | 1 | 262 | | Task.WaitAll(tasks.ToArray()); |
| | 1 | 263 | | Assert.IsTrue(scheduler.LastScaleUp > lastScaleUp, $"No scale up, i={i}, threads={scheduler.Workers}"); |
| | | 264 | | |
| | | 265 | | // wait for a while for the reset to finish |
| | 1 | 266 | | while (scheduler.LastResetTime <= lastReset && DateTime.UtcNow < lastReset.AddSeconds(30)) |
| | | 267 | | { |
| | | 268 | | // reset the scheduler again just in case |
| | 0 | 269 | | scheduler.Reset(); |
| | 0 | 270 | | await Task.Delay(50); |
| | | 271 | | } |
| | 1 | 272 | | Assert.IsTrue(scheduler.LastResetTime > lastReset, $"No reset, {scheduler.LastResetTime} vs {lastReset} vs { |
| | 1 | 273 | | } |
| | | 274 | | [TestMethod] |
| | | 275 | | public async Task ScaleDown() |
| | | 276 | | { |
| | 1 | 277 | | MockCpuUsage mockCpu = new(); |
| | 1 | 278 | | using IDisposable d = MockCpu.ScopedLocalOverride(mockCpu); // install a mock CPU so that the scheduler |
| | 1 | 279 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(ScaleDown), 1, 25, 10); |
| | 1 | 280 | | DateTime lastScaleUp = scheduler.LastScaleUp; |
| | | 281 | | Debug.Assert(DateTime.UtcNow > lastScaleUp); |
| | 1 | 282 | | DateTime lastScaleDown = scheduler.LastScaleDown; |
| | | 283 | | Debug.Assert(DateTime.UtcNow > lastScaleDown); |
| | 1 | 284 | | FifoTaskFactory factory = new(scheduler); |
| | 1 | 285 | | List<Task<Task>> tasks = new(); |
| | | 286 | | int i; |
| | 1 | 287 | | for (i = 0; i < 100 && scheduler.Workers < 10; ++i) |
| | | 288 | | { |
| | 1 | 289 | | FakeWork w = new(i, true); |
| | 1 | 290 | | tasks.Add(scheduler.Run(() => w.DoMixedWorkAsync(CancellationToken.None).AsTask())); // note that |
| | | 291 | | } |
| | 1 | 292 | | Task.WaitAll(tasks.ToArray()); |
| | 1 | 293 | | Assert.IsTrue(scheduler.LastScaleUp > lastScaleUp, $"No scale up, threads={scheduler.Workers}"); |
| | | 294 | | // now wait for a while for the master thread to scale things down |
| | 1 | 295 | | while (scheduler.LastScaleDown <= lastScaleDown && DateTime.UtcNow < lastScaleDown.AddSeconds(30)) |
| | | 296 | | { |
| | 0 | 297 | | await Task.Delay(50); |
| | | 298 | | } |
| | 1 | 299 | | Assert.IsTrue(scheduler.LastScaleDown > lastScaleDown, $"No scale down, {scheduler.LastScaleDown} vs {lastSc |
| | 1 | 300 | | } |
| | | 301 | | [TestMethod] |
| | | 302 | | public async Task StartNewException() |
| | | 303 | | { |
| | | 304 | | //using IDisposable d = LoggerBackend.ScopedLocalOverride(new AmbientTraceLogger()); |
| | 1 | 305 | | await Assert.ThrowsExactlyAsync<ExpectedException>(async () => await FifoTaskFactory.Default.StartNew(() => |
| | 1 | 306 | | } |
| | | 307 | | [TestMethod] |
| | | 308 | | public void DisposedException() |
| | | 309 | | { |
| | | 310 | | FifoTaskFactory test; |
| | 1 | 311 | | using (FifoTaskScheduler testScheduler = FifoTaskScheduler.Start(nameof(DisposedException))) |
| | | 312 | | { |
| | 1 | 313 | | test = new(testScheduler); |
| | 1 | 314 | | } |
| | 1 | 315 | | Assert.Throws<TaskSchedulerException>(() => test.StartNew(() => { })); // our code throws an ObjectDispo |
| | 1 | 316 | | } |
| | | 317 | | |
| | | 318 | | [TestMethod] // Note that this test will fail when run in isolation, possibly because the garbage collect |
| | | 319 | | public async Task UnobservedTaskException() |
| | | 320 | | { |
| | | 321 | | //using IDisposable d = LoggerBackend.ScopedLocalOverride(new AmbientTraceLogger()); |
| | 1 | 322 | | Guid unique = Guid.NewGuid(); |
| | 1 | 323 | | UnhandledExceptionTracker tracker = new(unique); |
| | | 324 | | try |
| | | 325 | | { |
| | 1 | 326 | | TaskScheduler.UnobservedTaskException += tracker.TaskScheduler_UnobservedTaskException; |
| | 1 | 327 | | FifoTaskScheduler.UnhandledException += tracker.TaskScheduler_UnobservedTaskException; |
| | 1 | 328 | | StartTaskWithUnobservedException(unique); |
| | 1 | 329 | | for (int loop = 0; loop < 100; ++loop) |
| | | 330 | | { |
| | 1 | 331 | | if (tracker.UnhandledExceptions > 0) break; |
| | 1 | 332 | | await Task.Delay(100); |
| | 1 | 333 | | GC.Collect(2, GCCollectionMode.Forced, true, true); |
| | 1 | 334 | | GC.WaitForPendingFinalizers(); |
| | | 335 | | } |
| | 1 | 336 | | Assert.IsGreaterThanOrEqualTo(1, tracker.UnhandledExceptions); |
| | 1 | 337 | | Assert.IsGreaterThanOrEqualTo(1, tracker.TaskSchedulerCount); |
| | 1 | 338 | | } |
| | | 339 | | finally |
| | | 340 | | { |
| | 1 | 341 | | FifoTaskScheduler.UnhandledException -= tracker.TaskScheduler_UnobservedTaskException; |
| | 1 | 342 | | TaskScheduler.UnobservedTaskException -= tracker.TaskScheduler_UnobservedTaskException; |
| | | 343 | | } |
| | 1 | 344 | | } |
| | | 345 | | private static void StartTaskWithUnobservedException(Guid unique) |
| | | 346 | | { |
| | 1 | 347 | | _ = FifoTaskFactory.Default.StartNew(() => ThrowExpectedUnobservedTaskException(unique)); |
| | 1 | 348 | | } |
| | | 349 | | |
| | | 350 | | class UnhandledExceptionTracker |
| | | 351 | | { |
| | | 352 | | private Guid _unique; |
| | | 353 | | private int _unhandledExceptions; |
| | | 354 | | private int _taskSchedulerCount; |
| | | 355 | | private int _fifoTaskSchedulerCount; |
| | | 356 | | |
| | 1 | 357 | | internal UnhandledExceptionTracker(Guid unique) |
| | | 358 | | { |
| | 1 | 359 | | _unique = unique; |
| | 1 | 360 | | } |
| | | 361 | | |
| | 1 | 362 | | internal int UnhandledExceptions => _unhandledExceptions; |
| | 1 | 363 | | internal int TaskSchedulerCount => _taskSchedulerCount; |
| | 1 | 364 | | internal int FifoTaskSchedulerCount => _fifoTaskSchedulerCount; |
| | | 365 | | |
| | | 366 | | internal void TaskScheduler_UnobservedTaskException(object? sender, UnobservedTaskExceptionEventArgs e) |
| | | 367 | | { |
| | 1 | 368 | | Assert.AreEqual(typeof(AggregateException), e.Exception?.GetType()); |
| | 1 | 369 | | Assert.AreEqual(typeof(ExpectedException), e.Exception?.InnerExceptions[0].GetType()); |
| | 1 | 370 | | if ((e.Exception?.InnerExceptions[0] as ExpectedException)?.TestName?.Contains(_unique.ToString()) ?? fa |
| | 1 | 371 | | Interlocked.Increment(ref _taskSchedulerCount); |
| | 1 | 372 | | e.SetObserved(); |
| | 1 | 373 | | } |
| | | 374 | | internal void FifoTaskScheduler_UnhandledException(object? sender, UnobservedTaskExceptionEventArgs e) |
| | | 375 | | { |
| | 1 | 376 | | Assert.AreEqual(typeof(AggregateException), e.Exception?.GetType()); |
| | 1 | 377 | | Assert.AreEqual(typeof(ExpectedException), e.Exception?.InnerExceptions[0].GetType()); |
| | 1 | 378 | | if ((e.Exception?.InnerExceptions[0] as ExpectedException)?.TestName?.Contains(_unique.ToString()) ?? fa |
| | 1 | 379 | | Interlocked.Increment(ref _fifoTaskSchedulerCount); |
| | 1 | 380 | | e.SetObserved(); |
| | 1 | 381 | | } |
| | | 382 | | } |
| | | 383 | | |
| | | 384 | | private static void ThrowExpectedUnobservedTaskException(Guid unique) |
| | | 385 | | { |
| | 1 | 386 | | throw new ExpectedException(nameof(UnobservedTaskException) + ":" + unique); |
| | | 387 | | } |
| | | 388 | | private static void ThrowExpectedException() |
| | | 389 | | { |
| | 1 | 390 | | throw new ExpectedException(); |
| | | 391 | | } |
| | | 392 | | private static async Task RunAndUnwrapAggregateExceptions(Func<Task> f) |
| | | 393 | | { |
| | | 394 | | try |
| | | 395 | | { |
| | 0 | 396 | | await f(); |
| | 0 | 397 | | } |
| | | 398 | | catch (AggregateException ex) |
| | | 399 | | { |
| | 0 | 400 | | Async.ConvertAggregateException(ex); |
| | 0 | 401 | | throw; |
| | | 402 | | } |
| | 0 | 403 | | } |
| | | 404 | | [TestMethod] |
| | | 405 | | public void GetScheduledTasks() |
| | | 406 | | { |
| | 1 | 407 | | IEnumerable<Task> tasks = FifoTaskScheduler.Default.GetScheduledTasksDirect(); |
| | 1 | 408 | | Assert.AreEqual(0, tasks.Count()); |
| | 1 | 409 | | } |
| | | 410 | | [TestMethod] |
| | | 411 | | public async Task InvokeException() |
| | | 412 | | { |
| | 1 | 413 | | await Assert.ThrowsExactlyAsync<ArgumentNullException>(() => FifoTaskScheduler.Default.Run<int>(null!)); |
| | 1 | 414 | | await Assert.ThrowsExactlyAsync<ArgumentNullException>(() => FifoTaskScheduler.Default.TransferWork((Func<Va |
| | 1 | 415 | | await Assert.ThrowsExactlyAsync<ArgumentNullException>(() => FifoTaskScheduler.Default.TransferWork((Func<Va |
| | 1 | 416 | | Assert.ThrowsExactly<ArgumentNullException>(() => FifoTaskScheduler.Default.Run(null!)); |
| | 1 | 417 | | Assert.ThrowsExactly<ArgumentNullException>(() => FifoTaskScheduler.Default.FireAndForget(null!)); |
| | 1 | 418 | | await Assert.ThrowsExactlyAsync<ExpectedException>(() => FifoTaskScheduler.Default.Run<int>(() => throw new |
| | 1 | 419 | | await Assert.ThrowsExactlyAsync<ExpectedException>(() => FifoTaskScheduler.Default.Run(() => throw new Expec |
| | 1 | 420 | | } |
| | | 421 | | [TestMethod] |
| | | 422 | | public void QueueTaskExceptions() |
| | | 423 | | { |
| | 1 | 424 | | Assert.ThrowsExactly<ArgumentNullException>(() => FifoTaskScheduler.Default.QueueTaskDirect(null!)); |
| | 1 | 425 | | } |
| | | 426 | | [TestMethod] |
| | | 427 | | public void Properties() |
| | | 428 | | { |
| | 1 | 429 | | Assert.IsGreaterThanOrEqualTo(0, FifoTaskScheduler.Default.Workers); |
| | 1 | 430 | | Assert.IsGreaterThanOrEqualTo(0, FifoTaskScheduler.Default.BusyWorkers); |
| | 1 | 431 | | Assert.IsGreaterThanOrEqualTo(Environment.ProcessorCount, FifoTaskScheduler.Default.MaximumConcurrencyLevel) |
| | 1 | 432 | | } |
| | | 433 | | [TestMethod] |
| | | 434 | | public void IntrusiveSinglyLinkedList() |
| | | 435 | | { |
| | 1 | 436 | | InterlockedSinglyLinkedList<NodeTest> list1 = new(); |
| | 1 | 437 | | InterlockedSinglyLinkedList<NodeTest> list2 = new(); |
| | 1 | 438 | | NodeTest node = new() { Value = 1 }; |
| | 1 | 439 | | list1.Push(node); |
| | 1 | 440 | | Assert.ThrowsExactly<ArgumentNullException>(() => list2.Push(null!)); |
| | 1 | 441 | | Assert.ThrowsExactly<InvalidOperationException>(() => list2.Push(node)); |
| | | 442 | | list1.Validate(); |
| | 1 | 443 | | Assert.AreEqual(1, list1.Count); |
| | 1 | 444 | | list1.Clear(); |
| | 1 | 445 | | Assert.AreEqual(0, list1.Count); |
| | 1 | 446 | | list2.Push(node); |
| | 1 | 447 | | NodeTest? popped = list2.Pop(); |
| | 1 | 448 | | Assert.AreEqual(node, popped); |
| | 1 | 449 | | } |
| | | 450 | | class NodeTest : IntrusiveSinglyLinkedListNode |
| | | 451 | | { |
| | 1 | 452 | | public int Value { get; set; } |
| | | 453 | | } |
| | | 454 | | [TestMethod] |
| | | 455 | | public async Task Worker() |
| | | 456 | | { |
| | 1 | 457 | | FifoTaskScheduler? scheduler = null; |
| | | 458 | | try |
| | | 459 | | { |
| | 1 | 460 | | scheduler = FifoTaskScheduler.Start(nameof(Worker)); |
| | 1 | 461 | | FifoWorker worker = FifoWorker.Start(scheduler, "1", ThreadPriority.Normal); // the worker disposes of |
| | 1 | 462 | | worker.Invoke(LongWait); |
| | 1 | 463 | | Assert.IsTrue(worker.IsBusy); |
| | 1 | 464 | | Assert.ThrowsExactly<InvalidOperationException>(() => worker.Invoke(LongWait)); |
| | 1 | 465 | | Assert.IsFalse(FifoWorker.IsWorkerInternalMethod(null)); |
| | 1 | 466 | | Assert.IsFalse(FifoWorker.IsWorkerInternalMethod(typeof(TestFifoTaskScheduler).GetMethod(nameof(Worker)) |
| | 1 | 467 | | Assert.IsTrue(FifoWorker.IsWorkerInternalMethod(typeof(FifoWorker).GetMethod("Invoke", System.Reflection |
| | 1 | 468 | | Assert.IsTrue(FifoWorker.IsWorkerInternalMethod(typeof(FifoWorker).GetMethod("WorkerFunc", System.Reflec |
| | 1 | 469 | | worker.Stop(); |
| | 1 | 470 | | Assert.ThrowsExactly<InvalidOperationException>(() => worker.Invoke(null!)); |
| | 1 | 471 | | } |
| | | 472 | | finally |
| | | 473 | | { |
| | 1 | 474 | | scheduler?.Dispose(); |
| | | 475 | | } |
| | 1 | 476 | | Assert.ThrowsExactly<ObjectDisposedException>(() => scheduler.Run(() => { })); |
| | 1 | 477 | | Assert.ThrowsExactly<ObjectDisposedException>(() => scheduler.FireAndForget(() => { })); |
| | 1 | 478 | | await Assert.ThrowsExactlyAsync<ObjectDisposedException>(() => scheduler.Run(() => new ValueTask())); |
| | 1 | 479 | | } |
| | | 480 | | public void LongWait() |
| | | 481 | | { |
| | 1 | 482 | | Thread.Sleep(5000); |
| | 1 | 483 | | } |
| | | 484 | | [TestMethod] |
| | | 485 | | public void WorkerNullWork() |
| | | 486 | | { |
| | 1 | 487 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(WorkerNullWork)); |
| | 1 | 488 | | FifoWorker worker = scheduler.CreateWorker(); // the worker disposes of itself |
| | 1 | 489 | | worker.Invoke(null!); |
| | 1 | 490 | | } |
| | 1 | 491 | | private AsyncLocal<int> ali = new(); |
| | | 492 | | [TestMethod] |
| | | 493 | | public async Task AsyncLocalFlow() |
| | | 494 | | { |
| | 1 | 495 | | int testvalue = 48902343; |
| | 1 | 496 | | ali.Value = testvalue; |
| | 1 | 497 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(AsyncLocalFlow)); |
| | 1 | 498 | | TaskCompletionSource<bool> completion = new(); |
| | 1 | 499 | | await Task.Factory.StartNew(() => |
| | 1 | 500 | | { |
| | 1 | 501 | | Assert.AreEqual(testvalue, ali.Value); |
| | 1 | 502 | | }, CancellationToken.None, TaskCreationOptions.None, scheduler); |
| | 1 | 503 | | await scheduler.Run(() => Assert.AreEqual(testvalue, ali.Value)); |
| | 1 | 504 | | } |
| | | 505 | | [TestMethod] |
| | | 506 | | public async Task ExceptionHandling1() |
| | | 507 | | { |
| | 1 | 508 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(ExceptionHandling1)); |
| | 1 | 509 | | scheduler.FireAndForget(() => throw new ExpectedException()); |
| | 1 | 510 | | await Task.Delay(1000); |
| | 1 | 511 | | } |
| | | 512 | | [TestMethod] |
| | | 513 | | public async Task ExceptionHandling2() |
| | | 514 | | { |
| | 1 | 515 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(ExceptionHandling2)); |
| | 1 | 516 | | Task? t = null; |
| | | 517 | | try |
| | | 518 | | { |
| | 1 | 519 | | t = ThrowExceptionAsyncTask(); |
| | 1 | 520 | | await t; |
| | 0 | 521 | | } |
| | 1 | 522 | | catch |
| | | 523 | | { |
| | 1 | 524 | | } |
| | 1 | 525 | | scheduler.QueueTaskDirect(t!); |
| | 1 | 526 | | await Task.Delay(1000); |
| | 1 | 527 | | } |
| | | 528 | | [TestMethod] |
| | | 529 | | public async Task ExceptionHandling4() |
| | | 530 | | { |
| | 1 | 531 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(ExceptionHandling4)); |
| | 1 | 532 | | await ExpectExceptionTask(() => scheduler.Run(() => throw new ExpectedException())); |
| | 1 | 533 | | await Task.Delay(1000); |
| | 1 | 534 | | } |
| | | 535 | | [TestMethod] |
| | | 536 | | public async Task ExceptionHandling8() |
| | | 537 | | { |
| | 1 | 538 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(ExceptionHandling8)); |
| | 1 | 539 | | await ExpectException(async () => await scheduler.Run(() => throw new ExpectedException())); |
| | 1 | 540 | | await Task.Delay(1000); |
| | 1 | 541 | | } |
| | | 542 | | [TestMethod] |
| | | 543 | | public async Task ExceptionHandling9() |
| | | 544 | | { |
| | 1 | 545 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(ExceptionHandling9)); |
| | 1 | 546 | | await ExpectException(async () => await scheduler.TransferWork(ThrowExceptionAsync)); |
| | 1 | 547 | | await Task.Delay(1000); |
| | 1 | 548 | | } |
| | | 549 | | [TestMethod] |
| | | 550 | | public async Task ExceptionHandling10() |
| | | 551 | | { |
| | 1 | 552 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(ExceptionHandling10)); |
| | 1 | 553 | | await ExpectException(async () => await scheduler.TransferWork(ThrowExceptionAsyncType<int>)); |
| | 1 | 554 | | await Task.Delay(1000); |
| | 1 | 555 | | } |
| | | 556 | | private async Task ThrowExceptionAsyncTask() |
| | | 557 | | { |
| | 1 | 558 | | await Task.Delay(100); |
| | 1 | 559 | | throw new ExpectedException(); |
| | | 560 | | } |
| | | 561 | | private ValueTask ThrowExceptionAsync() |
| | | 562 | | { |
| | 1 | 563 | | throw new ExpectedException(); |
| | | 564 | | } |
| | | 565 | | private ValueTask<T> ThrowExceptionAsyncType<T>() |
| | | 566 | | { |
| | 1 | 567 | | throw new ExpectedException(); |
| | | 568 | | } |
| | | 569 | | private async ValueTask ExpectExceptionTask(Func<Task> t) |
| | | 570 | | { |
| | | 571 | | try |
| | | 572 | | { |
| | 1 | 573 | | await t(); |
| | 0 | 574 | | throw new InvalidOperationException(); |
| | | 575 | | } |
| | 1 | 576 | | catch (ExpectedException) |
| | | 577 | | { |
| | | 578 | | // ok! |
| | 1 | 579 | | } |
| | 1 | 580 | | } |
| | | 581 | | private void ExpectException(Action a) |
| | | 582 | | { |
| | | 583 | | try |
| | | 584 | | { |
| | 0 | 585 | | a(); |
| | 0 | 586 | | throw new InvalidOperationException(); |
| | | 587 | | } |
| | 0 | 588 | | catch (ExpectedException) |
| | | 589 | | { |
| | | 590 | | // ok! |
| | 0 | 591 | | } |
| | 0 | 592 | | } |
| | | 593 | | private async ValueTask ExpectException(Func<ValueTask> a) |
| | | 594 | | { |
| | | 595 | | try |
| | | 596 | | { |
| | 1 | 597 | | await a(); |
| | 0 | 598 | | throw new InvalidOperationException(); |
| | | 599 | | } |
| | 1 | 600 | | catch (ExpectedException) |
| | | 601 | | { |
| | | 602 | | // ok! |
| | 1 | 603 | | } |
| | 1 | 604 | | } |
| | | 605 | | [TestMethod] |
| | | 606 | | public async Task StartNewAmbientThreadSchedulerSwitching() |
| | | 607 | | { |
| | 1 | 608 | | using FifoTaskScheduler scheduler = FifoTaskScheduler.Start(nameof(StartNewAmbientThreadSchedulerSwitching)) |
| | 1 | 609 | | TaskCompletionSource<bool> completion = new(); |
| | 1 | 610 | | await Task.Factory.StartNew(() => VerifyTaskSchedulerRemainsCustom(), CancellationToken.None, TaskCreationOp |
| | 1 | 611 | | } |
| | | 612 | | [TestMethod] |
| | | 613 | | public async Task TransferWorkAmbientThreadSchedulerSwitching() |
| | | 614 | | { |
| | 1 | 615 | | await FifoTaskScheduler.Default.TransferWork(async () => |
| | 1 | 616 | | { |
| | 1 | 617 | | await VerifyTaskSchedulerRemainsCustom(); |
| | 1 | 618 | | }); |
| | 1 | 619 | | } |
| | | 620 | | |
| | | 621 | | private async Task VerifyTaskSchedulerRemainsCustom() |
| | | 622 | | { |
| | 1 | 623 | | Assert.IsFalse(ReferenceEquals(TaskScheduler.Current, TaskScheduler.Default)); |
| | 1 | 624 | | await Task.Yield(); |
| | 1 | 625 | | Assert.IsFalse(ReferenceEquals(TaskScheduler.Current, TaskScheduler.Default)); |
| | 1 | 626 | | await Task.Delay(100); |
| | 1 | 627 | | Assert.IsFalse(ReferenceEquals(TaskScheduler.Current, TaskScheduler.Default)); |
| | 1 | 628 | | await Task.Delay(100).ConfigureAwait(true); |
| | 1 | 629 | | Assert.IsFalse(ReferenceEquals(TaskScheduler.Current, TaskScheduler.Default)); |
| | | 630 | | |
| | | 631 | | // ... more arbitrary async processing |
| | | 632 | | |
| | 1 | 633 | | Assert.IsFalse(ReferenceEquals(TaskScheduler.Current, TaskScheduler.Default)); |
| | 1 | 634 | | } |
| | | 635 | | } |
| | | 636 | | public class FakeWork |
| | | 637 | | { |
| | | 638 | | private readonly bool _fast; |
| | | 639 | | private readonly long _id; |
| | | 640 | | |
| | | 641 | | public FakeWork(long id, bool fast) |
| | | 642 | | { |
| | | 643 | | _fast = fast; |
| | | 644 | | _id = id; |
| | | 645 | | } |
| | | 646 | | |
| | | 647 | | public async ValueTask DoMixedWorkAsync(CancellationToken cancel = default, bool verifyHPThread = true) |
| | | 648 | | { |
| | | 649 | | ulong hash = GetHash(_id); |
| | | 650 | | await Task.Yield(); |
| | | 651 | | //string? threadName = Thread.CurrentThread.Name; |
| | | 652 | | |
| | | 653 | | if (verifyHPThread) Assert.AreEqual(typeof(FifoTaskScheduler), TaskScheduler.Current.GetType()); |
| | | 654 | | Stopwatch s = Stopwatch.StartNew(); |
| | | 655 | | for (int outer = 0; outer < (int)(hash % 256) && !cancel.IsCancellationRequested; ++outer) |
| | | 656 | | { |
| | | 657 | | Stopwatch cpu = Stopwatch.StartNew(); |
| | | 658 | | // use some CPU |
| | | 659 | | for (int spin = 0; spin < (int)((hash >> 6) % (_fast ? 16UL : 256UL)); ++spin) |
| | | 660 | | { |
| | | 661 | | double d1 = 0.0000000000000001; |
| | | 662 | | double d2 = 0.0000000000000001; |
| | | 663 | | for (int inner = 0; inner < (_fast ? 100 : 1000000); ++inner) { d2 = d1 * d2; } |
| | | 664 | | } |
| | | 665 | | cpu.Stop(); |
| | | 666 | | if (verifyHPThread) Assert.AreEqual(typeof(FifoTaskScheduler), TaskScheduler.Current.GetType()); |
| | | 667 | | Stopwatch mem = Stopwatch.StartNew(); |
| | | 668 | | // use some memory |
| | | 669 | | int bytesPerLoop = (int)((hash >> 12) % (_fast ? 10UL : 1024UL)); |
| | | 670 | | int loops = (int)((hash >> 22) % 1024); |
| | | 671 | | for (int memory = 0; memory < loops; ++memory) |
| | | 672 | | { |
| | | 673 | | byte[] bytes = new byte[bytesPerLoop]; |
| | | 674 | | } |
| | | 675 | | mem.Stop(); |
| | | 676 | | if (verifyHPThread) Assert.AreEqual(typeof(FifoTaskScheduler), TaskScheduler.Current.GetType()); |
| | | 677 | | Stopwatch io = Stopwatch.StartNew(); |
| | | 678 | | // simulate I/O by blocking |
| | | 679 | | await Task.Delay((int)((hash >> 32) % (_fast ? 5UL : 500UL)), cancel); |
| | | 680 | | io.Stop(); |
| | | 681 | | if (verifyHPThread) Assert.AreEqual(typeof(FifoTaskScheduler), TaskScheduler.Current.GetType()); |
| | | 682 | | } |
| | | 683 | | if (verifyHPThread) Assert.AreEqual(typeof(FifoTaskScheduler), TaskScheduler.Current.GetType()); |
| | | 684 | | //Debug.WriteLine($"Ran work {_id} on {threadName}!", "Work"); |
| | | 685 | | } |
| | | 686 | | public async ValueTask DoDelayOnlyWorkAsync(CancellationToken cancel = default) |
| | | 687 | | { |
| | | 688 | | ulong hash = GetHash(_id); |
| | | 689 | | await Task.Yield(); |
| | | 690 | | //string? threadName = Thread.CurrentThread.Name; |
| | | 691 | | |
| | | 692 | | Assert.AreEqual(typeof(FifoTaskScheduler), TaskScheduler.Current.GetType()); |
| | | 693 | | Stopwatch s = Stopwatch.StartNew(); |
| | | 694 | | for (int outer = 0; outer < (int)(hash % 256) && !cancel.IsCancellationRequested; ++outer) |
| | | 695 | | { |
| | | 696 | | Stopwatch io = Stopwatch.StartNew(); |
| | | 697 | | // simulate I/O by blocking |
| | | 698 | | await Task.Delay((int)((hash >> 32) % (_fast ? 5UL : 500UL)), cancel); |
| | | 699 | | io.Stop(); |
| | | 700 | | Assert.AreEqual(typeof(FifoTaskScheduler), TaskScheduler.Current.GetType()); |
| | | 701 | | } |
| | | 702 | | Assert.AreEqual(typeof(FifoTaskScheduler), TaskScheduler.Current.GetType()); |
| | | 703 | | //Debug.WriteLine($"Ran work {_id} on {threadName}!", "Work"); |
| | | 704 | | } |
| | | 705 | | private static ulong GetHash(long id) |
| | | 706 | | { |
| | | 707 | | unchecked |
| | | 708 | | { |
| | | 709 | | ulong x = (ulong)id * 1_111_111_111_111_111_111UL; // note that this is a prime number (but not a |
| | | 710 | | x = (((x & 0xaaaaaaaaaaaaaaaa) >> 1) | ((x & 0x5555555555555555) << 1)); |
| | | 711 | | x = (((x & 0xcccccccccccccccc) >> 2) | ((x & 0x3333333333333333) << 2)); |
| | | 712 | | x = (((x & 0xf0f0f0f0f0f0f0f0) >> 4) | ((x & 0x0f0f0f0f0f0f0f0f) << 4)); |
| | | 713 | | x = (((x & 0xff00ff00ff00ff00) >> 8) | ((x & 0x00ff00ff00ff00ff) << 8)); |
| | | 714 | | x = (((x & 0xffff0000ffff0000) >> 16) | ((x & 0x0000ffff0000ffff) << 16)); |
| | | 715 | | return ((x >> 32) | (x << 32)); |
| | | 716 | | } |
| | | 717 | | } |
| | | 718 | | } |
| | | 719 | | } |