Add TimeoutController
parent
4710268e0a
commit
dfd0fe9fe4
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@ -41,6 +41,7 @@
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..\UniTask\Assets\Plugins\UniTask\Runtime\UniTaskSynchronizationContext.cs;
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..\UniTask\Assets\Plugins\UniTask\Runtime\CancellationTokenSourceExtensions.cs;
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..\UniTask\Assets\Plugins\UniTask\Runtime\EnumeratorAsyncExtensions.cs;
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..\UniTask\Assets\Plugins\UniTask\Runtime\TimeoutController.cs;
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..\UniTask\Assets\Plugins\UniTask\Runtime\PlayerLoopHelper.cs;
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..\UniTask\Assets\Plugins\UniTask\Runtime\UniTask.Delay.cs;
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..\UniTask\Assets\Plugins\UniTask\Runtime\UniTask.Run.cs;
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@ -7,6 +7,7 @@ using System;
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namespace Cysharp.Threading.Tasks
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{
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public static class CancellationTokenSourceExtensions
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{
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public static void CancelAfterSlim(this CancellationTokenSource cts, int millisecondsDelay, DelayType delayType = DelayType.DeltaTime, PlayerLoopTiming delayTiming = PlayerLoopTiming.Update)
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@ -0,0 +1,258 @@
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#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
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using System.Threading;
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using System;
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using Cysharp.Threading.Tasks.Internal;
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namespace Cysharp.Threading.Tasks
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{
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// CancellationTokenSource itself can not reuse but CancelAfter(Timeout.InfiniteTimeSpan) allows reuse if did not reach timeout.
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// Similar discussion:
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// https://github.com/dotnet/runtime/issues/4694
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// https://github.com/dotnet/runtime/issues/48492
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// This TimeoutController emulate similar implementation, using CancelAfterSlim; to achieve zero allocation timeout.
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public sealed class TimeoutController : IDisposable
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{
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CancellationTokenSource timeoutSource;
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CancellationTokenSource linkedSource;
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StoppableDelayRealtimePromise timeoutDelay;
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readonly CancellationTokenSource originalLinkCancellationTokenSource;
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public TimeoutController()
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{
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this.timeoutSource = new CancellationTokenSource();
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this.originalLinkCancellationTokenSource = null;
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this.linkedSource = null;
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this.timeoutDelay = null;
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}
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public TimeoutController(CancellationTokenSource linkCancellationTokenSource)
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{
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this.timeoutSource = new CancellationTokenSource();
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this.originalLinkCancellationTokenSource = linkCancellationTokenSource;
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this.linkedSource = CancellationTokenSource.CreateLinkedTokenSource(timeoutSource.Token, linkCancellationTokenSource.Token);
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this.timeoutDelay = null;
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}
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public CancellationToken Timeout(TimeSpan timeout)
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{
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if (originalLinkCancellationTokenSource != null && originalLinkCancellationTokenSource.IsCancellationRequested)
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{
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return originalLinkCancellationTokenSource.Token;
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}
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if (timeoutSource.IsCancellationRequested)
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{
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timeoutSource.Dispose();
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timeoutSource = new CancellationTokenSource();
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if (linkedSource != null)
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{
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this.linkedSource.Cancel();
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this.linkedSource.Dispose();
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this.linkedSource = CancellationTokenSource.CreateLinkedTokenSource(timeoutSource.Token, originalLinkCancellationTokenSource.Token);
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}
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}
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if (timeoutDelay == null)
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{
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RunDelayAsync(timeout).Forget(); // timeoutDelay = ... in RunDelayAsync(immediately, before await)
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}
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else
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{
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timeoutDelay.RestartStopwatch(); // already running RunDelayAsync
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}
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return (linkedSource != null) ? linkedSource.Token : timeoutSource.Token;
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}
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public bool IsTimeout()
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{
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return timeoutSource.IsCancellationRequested;
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}
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public void Reset()
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{
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if (timeoutDelay != null)
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{
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timeoutDelay.Stop(); // stop delay, will finish RunDelayAsync
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timeoutDelay = null;
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}
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}
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async UniTaskVoid RunDelayAsync(TimeSpan timeout)
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{
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timeoutDelay = StoppableDelayRealtimePromise.Create(timeout, PlayerLoopTiming.Update, (linkedSource == null) ? CancellationToken.None : linkedSource.Token, out var version);
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try
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{
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var reason = await new UniTask<DelayResult>(timeoutDelay, version);
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if (reason == DelayResult.DelayCompleted)
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{
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// UnityEngine.Debug.Log("DEBUG:Timeout Complete, try to call timeoutSource.Cancel");
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timeoutSource.Cancel();
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}
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else if (reason == DelayResult.LinkedTokenCanceled)
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{
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// UnityEngine.Debug.Log("DEBUG:LinkedSource IsCancellationRequested");
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}
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else if (reason == DelayResult.ExternalStopped)
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{
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// Reset(Promise.Stop) called, do nothing.
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// UnityEngine.Debug.Log("DEBUG:Reset called");
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}
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}
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finally
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{
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timeoutDelay = null;
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}
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}
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public void Dispose()
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{
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if (timeoutDelay != null)
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{
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timeoutDelay.Stop();
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}
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timeoutSource.Dispose();
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if (linkedSource != null)
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{
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linkedSource.Dispose();
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}
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}
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enum DelayResult
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{
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LinkedTokenCanceled,
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ExternalStopped,
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DelayCompleted, // as Timeout.
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}
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// Stop + SuppressCancellationThrow.
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sealed class StoppableDelayRealtimePromise : IUniTaskSource<DelayResult>, IPlayerLoopItem, ITaskPoolNode<StoppableDelayRealtimePromise>
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{
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static OperationCanceledException ExterenalStopException = new OperationCanceledException();
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static TaskPool<StoppableDelayRealtimePromise> pool;
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StoppableDelayRealtimePromise nextNode;
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public ref StoppableDelayRealtimePromise NextNode => ref nextNode;
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static StoppableDelayRealtimePromise()
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{
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TaskPool.RegisterSizeGetter(typeof(StoppableDelayRealtimePromise), () => pool.Size);
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}
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long delayTimeSpanTicks;
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ValueStopwatch stopwatch;
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CancellationToken cancellationToken;
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bool externalStop;
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UniTaskCompletionSourceCore<DelayResult> core;
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StoppableDelayRealtimePromise()
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{
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}
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public static StoppableDelayRealtimePromise Create(TimeSpan delayTimeSpan, PlayerLoopTiming timing, CancellationToken cancellationToken, out short token)
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{
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if (!pool.TryPop(out var result))
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{
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result = new StoppableDelayRealtimePromise();
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}
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result.stopwatch = ValueStopwatch.StartNew();
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result.delayTimeSpanTicks = delayTimeSpan.Ticks;
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result.cancellationToken = cancellationToken;
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result.externalStop = false;
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TaskTracker.TrackActiveTask(result, 3);
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PlayerLoopHelper.AddAction(timing, result);
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token = result.core.Version;
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return result;
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}
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public void Stop()
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{
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externalStop = true;
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}
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public void RestartStopwatch()
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{
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stopwatch = ValueStopwatch.StartNew();
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}
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public DelayResult GetResult(short token)
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{
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try
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{
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return core.GetResult(token);
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}
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finally
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{
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TryReturn();
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}
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}
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void IUniTaskSource.GetResult(short token)
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{
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GetResult(token);
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}
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public UniTaskStatus GetStatus(short token)
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{
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return core.GetStatus(token);
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}
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public UniTaskStatus UnsafeGetStatus()
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{
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return core.UnsafeGetStatus();
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}
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public void OnCompleted(Action<object> continuation, object state, short token)
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{
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core.OnCompleted(continuation, state, token);
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}
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public bool MoveNext()
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{
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if (cancellationToken.IsCancellationRequested)
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{
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core.TrySetResult(DelayResult.LinkedTokenCanceled);
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return false;
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}
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if (externalStop)
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{
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core.TrySetResult(DelayResult.ExternalStopped);
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return false;
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}
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if (stopwatch.IsInvalid)
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{
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core.TrySetResult(DelayResult.DelayCompleted);
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return false;
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}
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if (stopwatch.ElapsedTicks >= delayTimeSpanTicks)
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{
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core.TrySetResult(DelayResult.DelayCompleted);
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return false;
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}
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return true;
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}
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bool TryReturn()
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{
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TaskTracker.RemoveTracking(this);
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core.Reset();
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stopwatch = default;
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cancellationToken = default;
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externalStop = false;
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return pool.TryPush(this);
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}
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}
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}
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}
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@ -0,0 +1,11 @@
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fileFormatVersion: 2
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guid: 6347ab34d2db6d744a654e8d62d96b96
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MonoImporter:
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externalObjects: {}
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serializedVersion: 2
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defaultReferences: []
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executionOrder: 0
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icon: {instanceID: 0}
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userData:
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assetBundleName:
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assetBundleVariant:
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@ -547,8 +547,13 @@ public class SandboxMain : MonoBehaviour
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Debug.Log("TestAsync Finished.");
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}
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CancellationTokenSource clickCancelSource = new CancellationTokenSource();
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TimeoutController timeoutController;
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async UniTaskVoid Start()
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{
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timeoutController = new TimeoutController(clickCancelSource);
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var defaultLoop = PlayerLoop.GetDefaultPlayerLoop();
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PlayerLoopHelper.Initialize(ref defaultLoop, InjectPlayerLoopTimings.All);
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okButton.onClick.AddListener(UniTask.UnityAction(async () =>
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{
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PlayerLoopHelper.DumpCurrentPlayerLoop();
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// try timeout
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try
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{
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await UniTask.Delay(TimeSpan.FromSeconds(2), cancellationToken: timeoutController.Timeout(TimeSpan.FromSeconds(3)));
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UnityEngine.Debug.Log("Delay Complete, Reset(and reuse).");
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timeoutController.Reset();
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}
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catch (OperationCanceledException ex)
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{
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UnityEngine.Debug.Log("Timeout! FromTimeout?:" + timeoutController.IsTimeout());
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_ = ex;
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}
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await UniTask.Yield();
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}));
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cancelButton.onClick.AddListener(UniTask.UnityAction(async () =>
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{
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await UniTask.Yield(PlayerLoopTiming.Initialization);
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clickCancelSource.Cancel();
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RunCheck(PlayerLoopTiming.Initialization).Forget();
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RunCheck(PlayerLoopTiming.LastInitialization).Forget();
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RunCheck(PlayerLoopTiming.EarlyUpdate).Forget();
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RunCheck(PlayerLoopTiming.LastEarlyUpdate).Forget();
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RunCheck(PlayerLoopTiming.FixedUpdate).Forget();
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RunCheck(PlayerLoopTiming.LastFixedUpdate).Forget();
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RunCheck(PlayerLoopTiming.PreUpdate).Forget();
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RunCheck(PlayerLoopTiming.LastPreUpdate).Forget();
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RunCheck(PlayerLoopTiming.Update).Forget();
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RunCheck(PlayerLoopTiming.LastUpdate).Forget();
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RunCheck(PlayerLoopTiming.PreLateUpdate).Forget();
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RunCheck(PlayerLoopTiming.LastPreLateUpdate).Forget();
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RunCheck(PlayerLoopTiming.PostLateUpdate).Forget();
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RunCheck(PlayerLoopTiming.LastPostLateUpdate).Forget();
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//RunCheck(PlayerLoopTiming.Initialization).Forget();
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//RunCheck(PlayerLoopTiming.LastInitialization).Forget();
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//RunCheck(PlayerLoopTiming.EarlyUpdate).Forget();
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//RunCheck(PlayerLoopTiming.LastEarlyUpdate).Forget();
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//RunCheck(PlayerLoopTiming.FixedUpdate).Forget();
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//RunCheck(PlayerLoopTiming.LastFixedUpdate).Forget();
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//RunCheck(PlayerLoopTiming.PreUpdate).Forget();
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//RunCheck(PlayerLoopTiming.LastPreUpdate).Forget();
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//RunCheck(PlayerLoopTiming.Update).Forget();
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//RunCheck(PlayerLoopTiming.LastUpdate).Forget();
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//RunCheck(PlayerLoopTiming.PreLateUpdate).Forget();
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//RunCheck(PlayerLoopTiming.LastPreLateUpdate).Forget();
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//RunCheck(PlayerLoopTiming.PostLateUpdate).Forget();
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//RunCheck(PlayerLoopTiming.LastPostLateUpdate).Forget();
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await UniTask.Yield();
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}));
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await UniTask.Yield();
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