2.0.17

Fixed CancelationToken not being passed correctly

.github/workflows/build-debug.yml

@@ -26,9 +26,10 @@ jobs:
       - run: dotnet test -c Debug ./src/UniTask.NetCoreTests/UniTask.NetCoreTests.csproj
 
   build-unity:
+    if: "(github.event == 'push' && github.repository_owner == 'Cysharp') || startsWith(github.event.pull_request.head.label, 'Cysharp:')"
     strategy:
       matrix:
-        unity: ['2019.3.9f1', '2020.1.0b5']
+        unity: ["2019.3.9f1", "2020.1.0b5"]
         include:
           - unity: 2019.3.9f1
             license: UNITY_2019_3
@@ -66,8 +67,8 @@ jobs:
         run: /opt/Unity/Editor/Unity -quit -batchmode -nographics -silent-crashes -logFile -projectPath . -executeMethod PackageExporter.Export
         working-directory: src/UniTask
 
-      # Store artifacts.      
+      # Store artifacts.
       - uses: actions/upload-artifact@v2
         with:
           name: UniTask.unitypackage.zip
-          path: ./src/UniTask/*.unitypackage
+          path: ./src/UniTask/*.unitypackage

.github/workflows/build-docs.yml

@@ -0,0 +1,31 @@
+name: build-docs
+
+on:
+  push:
+    branches:
+      - master
+      - feature/docs
+
+jobs:
+  run-docfx:
+    if: "!(contains(github.event.head_commit.message, '[skip ci]') || contains(github.event.head_commit.message, '[ci skip]'))"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2
+        with:
+          repository: Cysharp/DocfxTemplate
+          path: docs/_DocfxTemplate
+      - uses: Kirbyrawr/docfx-action@master
+        name: Docfx metadata
+        with:
+          args: metadata docs/docfx.json
+      - uses: Kirbyrawr/docfx-action@master
+        name: Docfx build
+        with:
+          args: build docs/docfx.json
+      - name: Publish to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: docs/_site

.github/workflows/build-release.yml

@@ -61,8 +61,8 @@ jobs:
       # Store artifacts.      
       - uses: actions/upload-artifact@v2
         with:
-          name: UniTask.unitypackage.zip
-          path: ./src/UniTask/*.unitypackage
+          name: UniTask.${{ env.GIT_TAG }}.unitypackage
+          path: ./src/UniTask/UniTask.${{ env.GIT_TAG }}.unitypackage
 
   create-release:
     needs: [build-dotnet, build-unity]

.gitignore

@@ -159,3 +159,49 @@ src/UniTask/UniTask.Tests.Editor.csproj
 src/UniTask/UniTask.*.unitypackage
 
 src/UniTask/UniTask.Linq.csproj
+
+src/UniTask/DOTween.Modules.csproj
+
+src/UniTask/Unity.Addressables.csproj
+
+src/UniTask/Unity.Addressables.Editor.csproj
+
+src/UniTask/Unity.Analytics.DataPrivacy.csproj
+
+src/UniTask/Unity.Recorder.csproj
+
+src/UniTask/Unity.Recorder.Editor.csproj
+
+src/UniTask/Unity.ResourceManager.csproj
+
+src/UniTask/Unity.Rider.Editor.csproj
+
+src/UniTask/Unity.ScriptableBuildPipeline.csproj
+
+src/UniTask/Unity.ScriptableBuildPipeline.Editor.csproj
+
+src/UniTask/Unity.TextMeshPro.csproj
+
+src/UniTask/Unity.TextMeshPro.Editor.csproj
+
+src/UniTask/Unity.Timeline.csproj
+
+src/UniTask/Unity.Timeline.Editor.csproj
+
+src/UniTask/Unity.VisualStudio.Editor.csproj
+
+src/UniTask/Unity.VSCode.Editor.csproj
+
+src/UniTask/UnityEditor.CacheServer.csproj
+
+src/UniTask/UnityEditor.TestRunner.csproj
+
+src/UniTask/UnityEditor.UI.csproj
+
+src/UniTask/UnityEngine.Advertisements.csproj
+
+src/UniTask/UnityEngine.Monetization.csproj
+
+src/UniTask/UnityEngine.TestRunner.csproj
+
+src/UniTask/UnityEngine.UI.csproj

README.md

@@ -2,17 +2,20 @@ UniTask
 ===
 [![GitHub Actions](https://github.com/Cysharp/UniTask/workflows/Build-Debug/badge.svg)](https://github.com/Cysharp/UniTask/actions) [![Releases](https://img.shields.io/github/release/Cysharp/UniTask.svg)](https://github.com/Cysharp/UniTask/releases)
 
-Provides an efficient async/await integration to Unity. 
+Provides an efficient allocation free async/await integration to Unity.
 
 * Struct based `UniTask<T>` and custom AsyncMethodBuilder to achive zero allocation
 * All Unity AsyncOperations and Coroutine to awaitable
-* PlayerLoop based task(`UniTask.Yield`, `UniTask.Delay`, `UniTask.DelayFrame`, etc...) that enable to replace all coroutine operation
+* PlayerLoop based task(`UniTask.Yield`, `UniTask.Delay`, `UniTask.DelayFrame`, etc..) that enable to replace all coroutine operation
 * MonoBehaviour Message Events and uGUI Events as awaitable/async-enumerable
 * Completely run on Unity's PlayerLoop so don't use thread and run on WebGL, wasm, etc.
 * Asynchronous LINQ, with Channel and AsyncReactiveProperty
 * TaskTracker window to prevent memory leak
 * Highly compatible behaviour with Task/ValueTask/IValueTaskSource
 
+Techinical details, see blog post: [UniTask v2 — Zero Allocation async/await for Unity, with Asynchronous LINQ
+](https://medium.com/@neuecc/unitask-v2-zero-allocation-async-await-for-unity-with-asynchronous-linq-1aa9c96aa7dd)
+
 <!-- START doctoc generated TOC please keep comment here to allow auto update -->
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
 ## Table of Contents
@@ -29,6 +32,8 @@ Provides an efficient async/await integration to Unity.
 - [Awaitable Events](#awaitable-events)
 - [Channel](#channel)
 - [For Unit Testing](#for-unit-testing)
+- [Compare with Standard Task API](#compare-with-standard-task-api)
+- [Pooling Configuration](#pooling-configuration)
 - [API References](#api-references)
 - [UPM Package](#upm-package)
   - [Install via git URL](#install-via-git-url)
@@ -52,21 +57,33 @@ async UniTask<string> DemoAsync()
 {
     // You can await Unity's AsyncObject
     var asset = await Resources.LoadAsync<TextAsset>("foo");
-    
+    var txt = (await UnityWebRequest.Get("https://...").SendWebRequest()).downloadHandler.text;
+    await SceneManager.LoadSceneAsync("scene2");
+
     // .WithCancellation enables Cancel, GetCancellationTokenOnDestroy synchornizes with lifetime of GameObject
-    var asset2 = await Resources.LoadAsync<TextAsset>("foo").WithCancellation(this.GetCancellationTokenOnDestroy());
+    var asset2 = await Resources.LoadAsync<TextAsset>("bar").WithCancellation(this.GetCancellationTokenOnDestroy());
 
     // .ToUniTask accepts progress callback(and all options), Progress.Create is a lightweight alternative of IProgress<T>
-    await SceneManager.LoadSceneAsync("scene2").ToUniTask(Progress.Create<float>(x => Debug.Log(x)));
-    
+    var asset3 = await Resources.LoadAsync<TextAsset>("baz").ToUniTask(Progress.Create<float>(x => Debug.Log(x)));
+
     // await frame-based operation like coroutine
     await UniTask.DelayFrame(100); 
 
-    // replacement of WaitForSeconds/WaitForSecondsRealtime
+    // replacement of yield return new WaitForSeconds/WaitForSecondsRealtime
     await UniTask.Delay(TimeSpan.FromSeconds(10), ignoreTimeScale: false);
     
-    // replacement of WaitForEndOfFrame(or other timing like yield return null, yield return WaitForFixedUpdate)
-    await UniTask.Yield(PlayerLoopTiming.LastPostLateUpdate);
+    // yield any playerloop timing(PreUpdate, Update, LateUpdate, etc...)
+    await UniTask.Yield(PlayerLoopTiming.PreLateUpdate);
+
+    // replacement of yield return null
+    await UniTask.Yield();
+    await UniTask.NextFrame();
+
+    // replacement of WaitForEndOfFrame(same as UniTask.Yield(PlayerLoopTiming.LastPostLateUpdate))
+    await UniTask.WaitForEndOfFrame();
+
+    // replacement of yield return new WaitForFixedUpdate(same as UniTask.Yield(PlayerLoopTiming.FixedUpdate))
+    await UniTask.WaitForFixedUpdate();
     
     // replacement of yield return WaitUntil
     await UniTask.WaitUntil(() => isActive == false);
@@ -80,9 +97,14 @@ async UniTask<string> DemoAsync()
     // You can await standard task
     await Task.Run(() => 100);
 
-    // Multithreading, run on ThreadPool under this code(use SwitchToMainThread, same as `ObserveOnMainThreadDispatcher`)
+    // Multithreading, run on ThreadPool under this code
     await UniTask.SwitchToThreadPool();
 
+    /* work on ThreadPool */
+
+    // return to MainThread(same as `ObserveOnMainThread` in UniRx)
+    await UniTask.SwitchToMainThread();
+
     // get async webrequest
     async UniTask<string> GetTextAsync(UnityWebRequest req)
     {
@@ -126,6 +148,8 @@ UniTask provides three pattern of extension methods.
 
 `WithCancellation` is a simple version of `ToUniTask`, both returns `UniTask`. Details of cancellation, see: [Cancellation and Exception handling](#cancellation-and-exception-handling) section.
 
+> Note: WithCancellation is returned from native timing of PlayerLoop but ToUniTask is returned from specified PlayerLoopTiming. Details of timing, see: [PlayerLoop](#playerloop) section.
+
 The type of `UniTask` can use utility like `UniTask.WhenAll`, `UniTask.WhenAny`. It is like Task.WhenAll/WhenAny but return type is more useful, returns value tuple so can deconsrtuct each result and pass multiple type.
 
 ```csharp
@@ -320,9 +344,19 @@ public enum PlayerLoopTiming
 
 It indicates when to run, you can check [PlayerLoopList.md](https://gist.github.com/neuecc/bc3a1cfd4d74501ad057e49efcd7bdae) to Unity's default playerloop and injected UniTask's custom loop.
 
-`PlayerLoopTiming.Update` is similar as `yield return null` in coroutine, but it is called before Update(Update is called on `ScriptRunBehaviourUpdate`, yield return null is called on `ScriptRunDelayedDynamicFrameRate`). If change timing to `PlayerLoopTiming.LastUpdate`, called after these Unity's update methods.
+`PlayerLoopTiming.Update` is similar as `yield return null` in coroutine, but it is called before Update(Update and uGUI events(button.onClick, etc...) are called on `ScriptRunBehaviourUpdate`, yield return null is called on `ScriptRunDelayedDynamicFrameRate`). `PlayerLoopTiming.FixedUpdate` is similar as `WaitForFixedUpdate`, `PlayerLoopTiming.LastPostLateUpdate` is similar as `WaitForEndOfFrame` in coroutine.
 
-`PlayerLoopTiming.FixedUpdate` is similar as `WaitForFixedUpdate`, `PlayerLoopTiming.LastPostLateUpdate` is similar as `WaitForEndOfFrame` in coroutine.
+`yield return null` and `UniTask.Yield` is similar but different. `yield return null` always return next frame but `UniTask.Yield` return next called, that is, call `UniTask.Yield(PlayerLoopTiming.Update)` on `PreUpdate`, it returns same frame. `UniTask.NextFrame()` gurantees return next frame, this would be expected to behave exactly the same as `yield return null`.
+
+> UniTask.Yield(without CancellationToken) is a special type, returns `YieldAwaitable` and run on YieldRunner. It is most lightweight and faster.
+
+AsyncOperation is returned from native timing. For example, await `SceneManager.LoadSceneAsync` is returned from `EarlyUpdate.UpdatePreloading` and after called, loaded scene's `Start` called from `EarlyUpdate.ScriptRunDelayedStartupFrame`. Also `await UnityWebRequest` is returned from `EarlyUpdate.ExecuteMainThreadJobs`.
+
+In UniTask, await directly and `WithCancellation` use native timing, `ToUniTask` use specified timing. This is usually not a particular problem, but with `LoadSceneAsync`, causes different order of Start and continuation after await. so recommend not to use `LoadSceneAsync.ToUniTask`.
+
+In stacktrace, you can check where is running in playerloop.
+
+![image](https://user-images.githubusercontent.com/46207/83735571-83caea80-a68b-11ea-8d22-5e22864f0d24.png)
 
 In default, UniTask's PlayerLoop is initialized at `[RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]`.
 
@@ -413,7 +447,7 @@ For debug use, enable tracking and capture stacktrace is useful but it it declin
 
 External Assets
 ---
-In default, UniTask supports DOTween and Addressable(`AsyncOperationHandle` and `AsyncOpereationHandle<T>` as awaitable).
+In default, UniTask supports DOTween and Addressables(`AsyncOperationHandle` and `AsyncOpereationHandle<T>` as awaitable).
 
 For DOTween support, require to `com.demigiant.dotween` import from [OpenUPM](https://openupm.com/packages/com.demigiant.dotween/) or define `UNITASK_DOTWEEN_SUPPORT` to enable it.
 
@@ -553,9 +587,30 @@ await this.GetAsyncMoveTrigger().ForEachAsync(axisEventData =>
 });
 ```
 
-`AsyncReactiveProperty`, `AsyncReadOnlyReactiveProperty` is UniTask version of UniTask's ReactiveProperty.
+`AsyncReactiveProperty`, `AsyncReadOnlyReactiveProperty` is UniTask version of UniTask's ReactiveProperty. `BindTo` extension method of `IUniTaskAsyncEnumerable<T>` for binding asynchronous stream values to Unity components(Text/Selectable/TMP/Text).
 
-`BindTo` extension method of `IUniTaskAsyncEnumerable<T>` for binding asynchronous stream values to Unity components(Text/Selectable/TMP/Text).
+```csharp
+var rp = new AsyncReactiveProperty<int>(99);
+
+// AsyncReactiveProperty itself is IUniTaskAsyncEnumerable, you can query by LINQ
+rp.ForEachAsync(x =>
+{
+    Debug.Log(x);
+}, this.GetCancellationTokenOnDestroy()).Forget();
+
+rp.Value = 10; // push 10 to all subscriber
+rp.Value = 11; // push 11 to all subscriber
+
+// WithoutCurrent ignore initial value
+// BindTo bind stream value to unity components.
+rp.WithoutCurrent().BindTo(this.textComponent);
+
+await rp.WaitAsync(); // wait until next value set
+
+// also exists ToReadOnlyReactiveProperty
+var rp2 = new AsyncReactiveProperty<int>(99);
+var rorp = rp.CombineLatest(rp2, (x, y) => (x, y)).ToReadOnlyReactiveProperty();
+```
 
 A pull-type asynchronous stream does not get the next values until the asynchronous processing in the sequence is complete. This could spill data from push-type events such as buttons.
 
@@ -649,6 +704,65 @@ public IEnumerator DelayIgnore() => UniTask.ToCoroutine(async () =>
 
 UniTask itself's unit test is written by Unity Test Runner and [Cysharp/RuntimeUnitTestToolkit](https://github.com/Cysharp/RuntimeUnitTestToolkit) to check on CI and IL2CPP working.
 
+Compare with Standard Task API
+---
+UniTask has many standard Task-like APIs. This table shows what is the alternative apis.
+
+Use standard type.
+
+| .NET Type | UniTask Type | 
+| --- | --- |
+| `IProgress<T>` | --- |
+| `CancellationToken` | --- | 
+| `CancellationTokenSource` | --- |
+
+Use UniTask type.
+
+| .NET Type | UniTask Type | 
+| --- | --- |
+| `Task`/`ValueTask` | `UniTask` |
+| `Task<T>`/`ValueTask<T>` | `UniTask<T>` |
+| `async void` | `async UniTaskVoid` | 
+| `+= async () => { }` | `UniTask.Void`, `UniTask.Action`, `UniTask.UnityAction` |
+| --- | `UniTaskCompletionSource` |
+| `TaskCompletionSource<T>` | `UniTaskCompletionSource<T>`/`AutoResetUniTaskCompletionSource<T>` |
+| `ManualResetValueTaskSourceCore<T>` | `UniTaskCompletionSourceCore<T>` |
+| `IValueTaskSource` | `IUniTaskSource` |
+| `IValueTaskSource<T>` | `IUniTaskSource<T>` |
+| `ValueTask.IsCompleted` | `UniTask.Status.IsCompleted()` |
+| `ValueTask<T>.IsCompleted` | `UniTask<T>.Status.IsCompleted()` |
+| `new Progress<T>` | `Progress.Create<T>` |
+| `CancellationToken.Register(UnsafeRegister)` | `CancellationToken.RegisterWithoutCaptureExecutionContext` |
+| `CancellationTokenSource.CancelAfter` | `CancellationTokenSource.CancelAfterSlim` |
+| `Channel.CreateUnbounded<T>(false){ SingleReader = true }` | `Channel.CreateSingleConsumerUnbounded<T>` |
+| `IAsyncEnumerable<T>` | `IUniTaskAsyncEnumerable<T>` |
+| `IAsyncEnumerator<T>` | `IUniTaskAsyncEnumerator<T>` |
+| `IAsyncDisposable` | `IUniTaskAsyncDisposable` |
+| `Task.Delay` | `UniTask.Delay` |
+| `Task.Yield` | `UniTask.Yield` |
+| `Task.Run` | `UniTask.Run` |
+| `Task.WhenAll` | `UniTask.WhenAll` |
+| `Task.WhenAny` | `UniTask.WhenAny` |
+| `Task.CompletedTask` | `UniTask.CompletedTask` |
+| `Task.FromException` | `UniTask.FromException` |
+| `Task.FromResult` | `UniTask.FromResult` |
+| `Task.FromCanceled` | `UniTask.FromCanceled` |
+| `Task.ContinueWith` | `UniTask.ContinueWith` |
+| `TaskScheduler.UnobservedTaskException` | `UniTaskScheduler.UnobservedTaskException` |
+
+Pooling Configuration
+---
+UniTask is aggressively caching async promise object to achive zero allocation. In default, cache all promises but you can configure `TaskPool.SetMaxPoolSize` to your value, the value indicates cache size per type. `TaskPool.GetCacheSizeInfo` returns current cached object in pool.
+
+```csharp
+foreach (var (type, size) in TaskPool.GetCacheSizeInfo())
+{
+    Debug.Log(type + ":" + size);
+}
+```
+
+> In UnityEditor profiler shows allocation of compiler generated AsyncStateMachine but it only occurs in debug(development) build. C# Compiler generate AsyncStateMachine as class on Debug build and as struct on Release build.
+
 API References
 ---
 UniTask's API References is hosted at [cysharp.github.io/UniTask](https://cysharp.github.io/UniTask/api/Cysharp.Threading.Tasks.html) by [DocFX](https://dotnet.github.io/docfx/) and [Cysharp/DocfXTemplate](https://github.com/Cysharp/DocfxTemplate).
@@ -667,7 +781,7 @@ After Unity 2019.3.4f1, Unity 2020.1a21, that support path query parameter of gi
 
 or add `"com.cysharp.unitask": "https://github.com/Cysharp/UniTask.git?path=src/UniTask/Assets/Plugins/UniTask"` to `Packages/manifest.json`.
 
-If you want to set a target version, UniTask is using `*.*.*` release tag so you can specify a version like `#2.0.13`. For example `https://github.com/Cysharp/UniTask.git?path=src/UniTask/Assets/Plugins/UniTask#2.0.13`.
+If you want to set a target version, UniTask is using `*.*.*` release tag so you can specify a version like `#2.0.15`. For example `https://github.com/Cysharp/UniTask.git?path=src/UniTask/Assets/Plugins/UniTask#2.0.15`.
 
 ### Install via OpenUPM
 
@@ -706,6 +820,16 @@ public class ZeroAllocAsyncAwaitInDotNetCore
         }
     }
 }
+
+// UniTask does not return to original SynchronizationContext but you can use helper `ReturnToCurrentSynchronizationContext`.
+public ValueTask TestAsync()
+{
+    await using (UniTask.ReturnToCurrentSynchronizationContext())
+    {
+        await UniTask.SwitchToThreadPool();
+        // do anything..
+    }
+}
 ```
 
 .NET Core version is intended to allow users to use UniTask as an interface when sharing code with Unity (such as [Cysharp/MagicOnion](https://github.com/Cysharp/MagicOnion/)). .NET Core version of UniTask enables smooth code sharing.
@@ -714,4 +838,4 @@ Utility methods such as WhenAll which is equivalent to UniTask are provided as [
 
 License
 ---
-This library is under the MIT License.
+This library is under the MIT License.

docs/.gitignore

@@ -0,0 +1,10 @@
+###############
+#    folder   #
+###############
+/**/DROP/
+/**/TEMP/
+/**/packages/
+/**/bin/
+/**/obj/
+_site
+_DocfxTemplate

docs/api/.gitignore

@@ -0,0 +1,5 @@
+###############
+#  temp file  #
+###############
+*.yml
+.manifest

docs/docfx.json

@@ -0,0 +1,70 @@
+{
+  "metadata": [
+    {
+      "src": [
+        {
+          "files": [
+            "UniTask/Assets/Plugins/UniTask/Runtime/**/*.cs"
+          ],
+          "src": "../src"
+        }
+      ],
+      "dest": "api",
+      "disableGitFeatures": false,
+      "disableDefaultFilter": false
+    }
+  ],
+  "build": {
+    "globalMetadata": {
+      "_disableContribution": true,
+      "_appTitle": "UniTask"
+    },
+    "content": [
+      {
+        "files": [
+          "api/**.yml",
+          "api/index.md"
+        ]
+      },
+      {
+        "files": [
+          "articles/**.md",
+          "articles/**/toc.yml",
+          "toc.yml",
+          "*.md"
+        ]
+      }
+    ],
+    "resource": [
+      {
+        "files": [
+          "images/**"
+        ]
+      }
+    ],
+    "overwrite": [
+      {
+        "files": [
+          "apidoc/**.md"
+        ],
+        "exclude": [
+          "obj/**",
+          "_site/**"
+        ]
+      }
+    ],
+    "dest": "_site",
+
+    "globalMetadataFiles": [],
+    "fileMetadataFiles": [],
+    "template": [
+      "_DocfxTemplate/templates/default-v2.5.2",
+      "_DocfxTemplate/templates/cysharp"
+    ],
+    "postProcessors": [],
+    "markdownEngineName": "markdig",
+    "noLangKeyword": false,
+    "keepFileLink": false,
+    "cleanupCacheHistory": false
+  }
+}

docs/index.md

@@ -0,0 +1,8 @@
+---
+title: Home
+---
+# UniTask
+
+Provides an efficient async/await integration to Unity.
+
+https://github.com/Cysharp/UniTask

docs/toc.yml

@@ -0,0 +1,11 @@
+- name: API Documentation
+  href: api/
+  homepage: api/Cysharp.Threading.Tasks.html
+
+- name: Repository
+  href: https://github.com/Cysharp/UniTask
+  homepage: https://github.com/Cysharp/UniTask
+
+- name: Releases
+  href: https://github.com/Cysharp/UniTask/releases
+  homepage: https://github.com/Cysharp/UniTask/releases

src/UniTask.NetCore/NetCore/UniTask.AsValueTask.cs

@@ -1,6 +1,8 @@
 #pragma warning disable 0649
 
+using System;
 using System.Threading.Tasks;
+using System.Threading.Tasks.Sources;
 
 namespace Cysharp.Threading.Tasks
 {
@@ -8,12 +10,20 @@ namespace Cysharp.Threading.Tasks
     {
         public static ValueTask AsValueTask(this in UniTask task)
         {
+#if NETSTANDARD2_0
+            return new ValueTask(new UniTaskValueTaskSource(task), 0);
+#else
             return task;
+#endif
         }
 
         public static ValueTask<T> AsValueTask<T>(this in UniTask<T> task)
         {
+#if NETSTANDARD2_0
+            return new ValueTask<T>(new UniTaskValueTaskSource<T>(task), 0);
+#else
             return task;
+#endif
         }
 
         public static UniTask<T> AsUniTask<T>(this ValueTask<T> task, bool useCurrentSynchronizationContext = true)
@@ -26,5 +36,63 @@ namespace Cysharp.Threading.Tasks
         {
             return task.AsTask().AsUniTask(useCurrentSynchronizationContext);
         }
+
+#if NETSTANDARD2_0
+
+        class UniTaskValueTaskSource : IValueTaskSource
+        {
+            readonly UniTask task;
+            readonly UniTask.Awaiter awaiter;
+
+            public UniTaskValueTaskSource(UniTask task)
+            {
+                this.task = task;
+                this.awaiter = task.GetAwaiter();
+            }
+
+            public void GetResult(short token)
+            {
+                awaiter.GetResult();
+            }
+
+            public ValueTaskSourceStatus GetStatus(short token)
+            {
+                return (ValueTaskSourceStatus)task.Status;
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token, ValueTaskSourceOnCompletedFlags flags)
+            {
+                awaiter.SourceOnCompleted(continuation, state);
+            }
+        }
+
+        class UniTaskValueTaskSource<T> : IValueTaskSource<T>
+        {
+            readonly UniTask<T> task;
+            readonly UniTask<T>.Awaiter awaiter;
+
+            public UniTaskValueTaskSource(UniTask<T> task)
+            {
+                this.task = task;
+                this.awaiter = task.GetAwaiter();
+            }
+
+            public T GetResult(short token)
+            {
+                return awaiter.GetResult();
+            }
+
+            public ValueTaskSourceStatus GetStatus(short token)
+            {
+                return (ValueTaskSourceStatus)task.Status;
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token, ValueTaskSourceOnCompletedFlags flags)
+            {
+                awaiter.SourceOnCompleted(continuation, state);
+            }
+        }
+
+#endif
     }
 }

src/UniTask.NetCore/UniTask.NetCore.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>netcoreapp3.1;netstandard2.1</TargetFrameworks>
+        <TargetFrameworks>netcoreapp3.1;netstandard2.1;netstandard2.0</TargetFrameworks>
         <AssemblyName>UniTask</AssemblyName>
         <LangVersion>8.0</LangVersion>
         <RootNamespace>Cysharp.Threading.Tasks</RootNamespace>

src/UniTask.NetCoreSandbox/Program.cs

@@ -277,7 +277,11 @@ namespace NetCoreSandbox
 #endif
             // await new AllocationCheck().ViaUniTaskVoid();
 
-            // AsyncTest().Forget();
+            // AsyncTest().Forge
+
+            Console.WriteLine("A?");
+            var a = await new ZeroAllocAsyncAwaitInDotNetCore().NanikaAsync(1, 2);
+            Console.WriteLine("RET:" + a);
             await WhereSelect();
 
             SynchronizationContext.SetSynchronizationContext(new MySyncContext());

src/UniTask.NetCoreTests/AsyncReactivePropertyTest.cs

@@ -112,6 +112,85 @@ namespace NetCoreTests
             state.Value.Should().Be(20);
         }
 
+        [Fact]
+        public async Task WaitAsyncTest()
+        {
+            var rp = new AsyncReactiveProperty<int>(128);
+
+            var f = await rp.FirstAsync();
+            f.Should().Be(128);
+
+            {
+                var t = rp.WaitAsync();
+                rp.Value = 99;
+                rp.Value = 100;
+                var v = await t;
+
+                v.Should().Be(99);
+            }
+
+            {
+                var t = rp.WaitAsync();
+                rp.Value = 99;
+                rp.Value = 100;
+                var v = await t;
+
+                v.Should().Be(99);
+            }
+        }
+
+
+        [Fact]
+        public async Task WaitAsyncCancellationTest()
+        {
+            var cts = new CancellationTokenSource();
+
+            var rp = new AsyncReactiveProperty<int>(128);
+
+            var t = rp.WaitAsync(cts.Token);
+
+            cts.Cancel();
+
+            rp.Value = 99;
+            rp.Value = 100;
+
+            await Assert.ThrowsAsync<OperationCanceledException>(async () => { await t; });
+        }
+
+
+        [Fact]
+        public async Task ReadOnlyWaitAsyncTest()
+        {
+            var rp = new AsyncReactiveProperty<int>(128);
+            var rrp = rp.ToReadOnlyAsyncReactiveProperty(CancellationToken.None);
+
+            var t = rrp.WaitAsync();
+            rp.Value = 99;
+            rp.Value = 100;
+            var v = await t;
+
+            v.Should().Be(99);
+        }
+
+
+        [Fact]
+        public async Task ReadOnlyWaitAsyncCancellationTest()
+        {
+            var cts = new CancellationTokenSource();
+
+            var rp = new AsyncReactiveProperty<int>(128);
+            var rrp = rp.ToReadOnlyAsyncReactiveProperty(CancellationToken.None);
+
+            var t = rrp.WaitAsync(cts.Token);
+
+            cts.Cancel();
+
+            rp.Value = 99;
+            rp.Value = 100;
+
+            await Assert.ThrowsAsync<OperationCanceledException>(async () => { await t; });
+        }
+
     }
 
 

src/UniTask/Assets/Plugins/UniTask/Runtime/AsyncReactiveProperty.cs

@@ -7,6 +7,7 @@ namespace Cysharp.Threading.Tasks
     {
         T Value { get; }
         IUniTaskAsyncEnumerable<T> WithoutCurrent();
+        UniTask<T> WaitAsync(CancellationToken cancellationToken = default);
     }
 
     public interface IAsyncReactiveProperty<T> : IReadOnlyAsyncReactiveProperty<T>
@@ -69,6 +70,11 @@ namespace Cysharp.Threading.Tasks
             return latestValue?.ToString();
         }
 
+        public UniTask<T> WaitAsync(CancellationToken cancellationToken = default)
+        {
+            return new UniTask<T>(WaitAsyncSource.Create(this, cancellationToken, out var token), token);
+        }
+
         static bool isValueType;
 
         static AsyncReactiveProperty()
@@ -76,7 +82,143 @@ namespace Cysharp.Threading.Tasks
             isValueType = typeof(T).IsValueType;
         }
 
-        class WithoutCurrentEnumerable : IUniTaskAsyncEnumerable<T>
+        sealed class WaitAsyncSource : IUniTaskSource<T>, ITriggerHandler<T>, ITaskPoolNode<WaitAsyncSource>
+        {
+            static Action<object> cancellationCallback = CancellationCallback;
+
+            static TaskPool<WaitAsyncSource> pool;
+            WaitAsyncSource ITaskPoolNode<WaitAsyncSource>.NextNode { get; set; }
+
+            static WaitAsyncSource()
+            {
+                TaskPool.RegisterSizeGetter(typeof(WaitAsyncSource), () => pool.Size);
+            }
+
+            AsyncReactiveProperty<T> parent;
+            CancellationToken cancellationToken;
+            CancellationTokenRegistration cancellationTokenRegistration;
+            UniTaskCompletionSourceCore<T> core;
+
+            WaitAsyncSource()
+            {
+            }
+
+            public static IUniTaskSource<T> Create(AsyncReactiveProperty<T> parent, CancellationToken cancellationToken, out short token)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return AutoResetUniTaskCompletionSource<T>.CreateFromCanceled(cancellationToken, out token);
+                }
+
+                if (!pool.TryPop(out var result))
+                {
+                    result = new WaitAsyncSource();
+                }
+
+                result.parent = parent;
+                result.cancellationToken = cancellationToken;
+
+                if (cancellationToken.CanBeCanceled)
+                {
+                    result.cancellationTokenRegistration = cancellationToken.RegisterWithoutCaptureExecutionContext(cancellationCallback, result);
+                }
+
+                result.parent.triggerEvent.Add(result);
+
+                TaskTracker.TrackActiveTask(result, 3);
+
+                token = result.core.Version;
+                return result;
+            }
+
+            bool TryReturn()
+            {
+                TaskTracker.RemoveTracking(this);
+                core.Reset();
+                cancellationTokenRegistration.Dispose();
+                cancellationTokenRegistration = default;
+                parent.triggerEvent.Remove(this);
+                parent = null;
+                cancellationToken = default;
+                return pool.TryPush(this);
+            }
+
+            ~WaitAsyncSource()
+            {
+                if (TryReturn())
+                {
+                    GC.ReRegisterForFinalize(this);
+                }
+            }
+
+            static void CancellationCallback(object state)
+            {
+                var self = (WaitAsyncSource)state;
+                self.OnCanceled(self.cancellationToken);
+            }
+
+            // IUniTaskSource
+
+            public T GetResult(short token)
+            {
+                try
+                {
+                    return core.GetResult(token);
+                }
+                finally
+                {
+                    TryReturn();
+                }
+            }
+
+            void IUniTaskSource.GetResult(short token)
+            {
+                GetResult(token);
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token)
+            {
+                core.OnCompleted(continuation, state, token);
+            }
+
+            public UniTaskStatus GetStatus(short token)
+            {
+                return core.GetStatus(token);
+            }
+
+            public UniTaskStatus UnsafeGetStatus()
+            {
+                return core.UnsafeGetStatus();
+            }
+
+            // ITriggerHandler
+
+            ITriggerHandler<T> ITriggerHandler<T>.Prev { get; set; }
+            ITriggerHandler<T> ITriggerHandler<T>.Next { get; set; }
+
+            public void OnCanceled(CancellationToken cancellationToken)
+            {
+                core.TrySetCanceled(cancellationToken);
+            }
+
+            public void OnCompleted()
+            {
+                // Complete as Cancel.
+                core.TrySetCanceled(CancellationToken.None);
+            }
+
+            public void OnError(Exception ex)
+            {
+                core.TrySetException(ex);
+            }
+
+            public void OnNext(T value)
+            {
+                core.TrySetResult(value);
+            }
+        }
+
+        sealed class WithoutCurrentEnumerable : IUniTaskAsyncEnumerable<T>
         {
             readonly AsyncReactiveProperty<T> parent;
 
@@ -253,6 +395,11 @@ namespace Cysharp.Threading.Tasks
             return latestValue?.ToString();
         }
 
+        public UniTask<T> WaitAsync(CancellationToken cancellationToken = default)
+        {
+            return new UniTask<T>(WaitAsyncSource.Create(this, cancellationToken, out var token), token);
+        }
+
         static bool isValueType;
 
         static ReadOnlyAsyncReactiveProperty()
@@ -260,7 +407,143 @@ namespace Cysharp.Threading.Tasks
             isValueType = typeof(T).IsValueType;
         }
 
-        class WithoutCurrentEnumerable : IUniTaskAsyncEnumerable<T>
+        sealed class WaitAsyncSource : IUniTaskSource<T>, ITriggerHandler<T>, ITaskPoolNode<WaitAsyncSource>
+        {
+            static Action<object> cancellationCallback = CancellationCallback;
+
+            static TaskPool<WaitAsyncSource> pool;
+            WaitAsyncSource ITaskPoolNode<WaitAsyncSource>.NextNode { get; set; }
+
+            static WaitAsyncSource()
+            {
+                TaskPool.RegisterSizeGetter(typeof(WaitAsyncSource), () => pool.Size);
+            }
+
+            ReadOnlyAsyncReactiveProperty<T> parent;
+            CancellationToken cancellationToken;
+            CancellationTokenRegistration cancellationTokenRegistration;
+            UniTaskCompletionSourceCore<T> core;
+
+            WaitAsyncSource()
+            {
+            }
+
+            public static IUniTaskSource<T> Create(ReadOnlyAsyncReactiveProperty<T> parent, CancellationToken cancellationToken, out short token)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return AutoResetUniTaskCompletionSource<T>.CreateFromCanceled(cancellationToken, out token);
+                }
+
+                if (!pool.TryPop(out var result))
+                {
+                    result = new WaitAsyncSource();
+                }
+
+                result.parent = parent;
+                result.cancellationToken = cancellationToken;
+
+                if (cancellationToken.CanBeCanceled)
+                {
+                    result.cancellationTokenRegistration = cancellationToken.RegisterWithoutCaptureExecutionContext(cancellationCallback, result);
+                }
+
+                result.parent.triggerEvent.Add(result);
+
+                TaskTracker.TrackActiveTask(result, 3);
+
+                token = result.core.Version;
+                return result;
+            }
+
+            bool TryReturn()
+            {
+                TaskTracker.RemoveTracking(this);
+                core.Reset();
+                cancellationTokenRegistration.Dispose();
+                cancellationTokenRegistration = default;
+                parent.triggerEvent.Remove(this);
+                parent = null;
+                cancellationToken = default;
+                return pool.TryPush(this);
+            }
+
+            ~WaitAsyncSource()
+            {
+                if (TryReturn())
+                {
+                    GC.ReRegisterForFinalize(this);
+                }
+            }
+
+            static void CancellationCallback(object state)
+            {
+                var self = (WaitAsyncSource)state;
+                self.OnCanceled(self.cancellationToken);
+            }
+
+            // IUniTaskSource
+
+            public T GetResult(short token)
+            {
+                try
+                {
+                    return core.GetResult(token);
+                }
+                finally
+                {
+                    TryReturn();
+                }
+            }
+
+            void IUniTaskSource.GetResult(short token)
+            {
+                GetResult(token);
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token)
+            {
+                core.OnCompleted(continuation, state, token);
+            }
+
+            public UniTaskStatus GetStatus(short token)
+            {
+                return core.GetStatus(token);
+            }
+
+            public UniTaskStatus UnsafeGetStatus()
+            {
+                return core.UnsafeGetStatus();
+            }
+
+            // ITriggerHandler
+
+            ITriggerHandler<T> ITriggerHandler<T>.Prev { get; set; }
+            ITriggerHandler<T> ITriggerHandler<T>.Next { get; set; }
+
+            public void OnCanceled(CancellationToken cancellationToken)
+            {
+                core.TrySetCanceled(cancellationToken);
+            }
+
+            public void OnCompleted()
+            {
+                // Complete as Cancel.
+                core.TrySetCanceled(CancellationToken.None);
+            }
+
+            public void OnError(Exception ex)
+            {
+                core.TrySetException(ex);
+            }
+
+            public void OnNext(T value)
+            {
+                core.TrySetResult(value);
+            }
+        }
+
+        sealed class WithoutCurrentEnumerable : IUniTaskAsyncEnumerable<T>
         {
             readonly ReadOnlyAsyncReactiveProperty<T> parent;
 

src/UniTask/Assets/Plugins/UniTask/Runtime/CancellationTokenExtensions.cs

@@ -9,6 +9,7 @@ namespace Cysharp.Threading.Tasks
     public static class CancellationTokenExtensions
     {
         static readonly Action<object> cancellationTokenCallback = Callback;
+        static readonly Action<object> disposeCallback = DisposeCallback;
 
         public static (UniTask, CancellationTokenRegistration) ToUniTask(this CancellationToken cancellationToken)
         {
@@ -75,6 +76,17 @@ namespace Cysharp.Threading.Tasks
                 }
             }
         }
+
+        public static CancellationTokenRegistration AddTo(this IDisposable disposable, CancellationToken cancellationToken)
+        {
+            return cancellationToken.RegisterWithoutCaptureExecutionContext(disposeCallback, disposable);
+        }
+
+        static void DisposeCallback(object state)
+        {
+            var d = (IDisposable)state;
+            d.Dispose();
+        }
     }
 
     public struct CancellationTokenAwaitable

src/UniTask/Assets/Plugins/UniTask/Runtime/CompilerServices/AsyncUniTaskMethodBuilder.cs

@@ -12,7 +12,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
     [StructLayout(LayoutKind.Auto)]
     public struct AsyncUniTaskMethodBuilder
     {
-        internal IStateMachineRunnerPromise runnerPromise;
+        IStateMachineRunnerPromise runnerPromise;
         Exception ex;
 
         // 1. Static Create method.
@@ -80,7 +80,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         {
             if (runnerPromise == null)
             {
-                AsyncUniTask<TStateMachine>.SetStateMachine(ref this, ref stateMachine);
+                AsyncUniTask<TStateMachine>.SetStateMachine(ref stateMachine, ref runnerPromise);
             }
 
             awaiter.OnCompleted(runnerPromise.MoveNext);
@@ -96,7 +96,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         {
             if (runnerPromise == null)
             {
-                AsyncUniTask<TStateMachine>.SetStateMachine(ref this, ref stateMachine);
+                AsyncUniTask<TStateMachine>.SetStateMachine(ref stateMachine, ref runnerPromise);
             }
 
             awaiter.UnsafeOnCompleted(runnerPromise.MoveNext);
@@ -138,7 +138,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
     [StructLayout(LayoutKind.Auto)]
     public struct AsyncUniTaskMethodBuilder<T>
     {
-        internal IStateMachineRunnerPromise<T> runnerPromise;
+        IStateMachineRunnerPromise<T> runnerPromise;
         Exception ex;
         T result;
 
@@ -211,7 +211,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         {
             if (runnerPromise == null)
             {
-                AsyncUniTask<TStateMachine, T>.SetStateMachine(ref this, ref stateMachine);
+                AsyncUniTask<TStateMachine, T>.SetStateMachine(ref stateMachine, ref runnerPromise);
             }
 
             awaiter.OnCompleted(runnerPromise.MoveNext);
@@ -227,7 +227,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         {
             if (runnerPromise == null)
             {
-                AsyncUniTask<TStateMachine, T>.SetStateMachine(ref this, ref stateMachine);
+                AsyncUniTask<TStateMachine, T>.SetStateMachine(ref stateMachine, ref runnerPromise);
             }
 
             awaiter.UnsafeOnCompleted(runnerPromise.MoveNext);

src/UniTask/Assets/Plugins/UniTask/Runtime/CompilerServices/AsyncUniTaskVoidMethodBuilder.cs

@@ -12,7 +12,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
     [StructLayout(LayoutKind.Auto)]
     public struct AsyncUniTaskVoidMethodBuilder
     {
-        internal IStateMachineRunner runner;
+        IStateMachineRunner runner;
 
         // 1. Static Create method.
         [DebuggerHidden]
@@ -41,7 +41,12 @@ namespace Cysharp.Threading.Tasks.CompilerServices
             // runner is finished, return first.
             if (runner != null)
             {
+#if ENABLE_IL2CPP
+                // workaround for IL2CPP bug.
+                PlayerLoopHelper.AddContinuation(PlayerLoopTiming.LastPostLateUpdate, runner.ReturnAction);
+#else
                 runner.Return();
+#endif
                 runner = null;
             }
 
@@ -56,7 +61,12 @@ namespace Cysharp.Threading.Tasks.CompilerServices
             // runner is finished, return.
             if (runner != null)
             {
+#if ENABLE_IL2CPP
+                // workaround for IL2CPP bug.
+                PlayerLoopHelper.AddContinuation(PlayerLoopTiming.LastPostLateUpdate, runner.ReturnAction);
+#else
                 runner.Return();
+#endif
                 runner = null;
             }
         }
@@ -70,7 +80,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         {
             if (runner == null)
             {
-                AsyncUniTaskVoid<TStateMachine>.SetStateMachine(ref this, ref stateMachine);
+                AsyncUniTaskVoid<TStateMachine>.SetStateMachine(ref stateMachine, ref runner);
             }
 
             awaiter.OnCompleted(runner.MoveNext);
@@ -86,7 +96,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         {
             if (runner == null)
             {
-                AsyncUniTaskVoid<TStateMachine>.SetStateMachine(ref this, ref stateMachine);
+                AsyncUniTaskVoid<TStateMachine>.SetStateMachine(ref stateMachine, ref runner);
             }
 
             awaiter.UnsafeOnCompleted(runner.MoveNext);

src/UniTask/Assets/Plugins/UniTask/Runtime/CompilerServices/StateMachineRunner.cs

@@ -2,6 +2,7 @@
 
 using Cysharp.Threading.Tasks.Internal;
 using System;
+using System.Linq;
 using System.Diagnostics;
 using System.Runtime.CompilerServices;
 
@@ -11,6 +12,10 @@ namespace Cysharp.Threading.Tasks.CompilerServices
     {
         Action MoveNext { get; }
         void Return();
+
+#if ENABLE_IL2CPP
+        Action ReturnAction { get; }
+#endif
     }
 
     internal interface IStateMachineRunnerPromise : IUniTaskSource
@@ -29,11 +34,26 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         void SetException(Exception exception);
     }
 
+    internal static class StateMachineUtility
+    {
+        // Get AsyncStateMachine internal state to check IL2CPP bug
+        public static int GetState(IAsyncStateMachine stateMachine)
+        {
+            var info = stateMachine.GetType().GetFields(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance)
+                .First(x => x.Name.EndsWith("__state"));
+            return (int)info.GetValue(stateMachine);
+        }
+    }
+
     internal sealed class AsyncUniTaskVoid<TStateMachine> : IStateMachineRunner, ITaskPoolNode<AsyncUniTaskVoid<TStateMachine>>, IUniTaskSource
         where TStateMachine : IAsyncStateMachine
     {
         static TaskPool<AsyncUniTaskVoid<TStateMachine>> pool;
 
+#if ENABLE_IL2CPP
+        public Action ReturnAction { get; }
+#endif
+
         TStateMachine stateMachine;
 
         public Action MoveNext { get; }
@@ -41,9 +61,12 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         public AsyncUniTaskVoid()
         {
             MoveNext = Run;
+#if ENABLE_IL2CPP
+            ReturnAction = Return;
+#endif
         }
 
-        public static void SetStateMachine(ref AsyncUniTaskVoidMethodBuilder builder, ref TStateMachine stateMachine)
+        public static void SetStateMachine(ref TStateMachine stateMachine, ref IStateMachineRunner runnerFieldRef)
         {
             if (!pool.TryPop(out var result))
             {
@@ -51,7 +74,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
             }
             TaskTracker.TrackActiveTask(result, 3);
 
-            builder.runner = result; // set runner before copied.
+            runnerFieldRef = result; // set runner before copied.
             result.stateMachine = stateMachine; // copy struct StateMachine(in release build).
         }
 
@@ -102,18 +125,23 @@ namespace Cysharp.Threading.Tasks.CompilerServices
     {
         static TaskPool<AsyncUniTask<TStateMachine>> pool;
 
-        TStateMachine stateMachine;
-
+#if ENABLE_IL2CPP
+        readonly Action returnDelegate;  
+#endif
         public Action MoveNext { get; }
 
+        TStateMachine stateMachine;
         UniTaskCompletionSourceCore<AsyncUnit> core;
 
         AsyncUniTask()
         {
             MoveNext = Run;
+#if ENABLE_IL2CPP
+            returnDelegate = Return;
+#endif
         }
 
-        public static void SetStateMachine(ref AsyncUniTaskMethodBuilder builder, ref TStateMachine stateMachine)
+        public static void SetStateMachine(ref TStateMachine stateMachine, ref IStateMachineRunnerPromise runnerPromiseFieldRef)
         {
             if (!pool.TryPop(out var result))
             {
@@ -121,7 +149,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
             }
             TaskTracker.TrackActiveTask(result, 3);
 
-            builder.runnerPromise = result; // set runner before copied.
+            runnerPromiseFieldRef = result; // set runner before copied.
             result.stateMachine = stateMachine; // copy struct StateMachine(in release build).
         }
 
@@ -132,6 +160,14 @@ namespace Cysharp.Threading.Tasks.CompilerServices
             TaskPool.RegisterSizeGetter(typeof(AsyncUniTask<TStateMachine>), () => pool.Size);
         }
 
+        void Return()
+        {
+            TaskTracker.RemoveTracking(this);
+            core.Reset();
+            stateMachine = default;
+            pool.TryPush(this);
+        }
+
         bool TryReturn()
         {
             TaskTracker.RemoveTracking(this);
@@ -177,7 +213,12 @@ namespace Cysharp.Threading.Tasks.CompilerServices
             }
             finally
             {
+#if ENABLE_IL2CPP
+                // workaround for IL2CPP bug.
+                PlayerLoopHelper.AddContinuation(PlayerLoopTiming.LastPostLateUpdate, returnDelegate);
+#else
                 TryReturn();
+#endif
             }
         }
 
@@ -213,18 +254,24 @@ namespace Cysharp.Threading.Tasks.CompilerServices
     {
         static TaskPool<AsyncUniTask<TStateMachine, T>> pool;
 
-        TStateMachine stateMachine;
+#if ENABLE_IL2CPP
+        readonly Action returnDelegate;  
+#endif
 
         public Action MoveNext { get; }
 
+        TStateMachine stateMachine;
         UniTaskCompletionSourceCore<T> core;
 
         AsyncUniTask()
         {
             MoveNext = Run;
+#if ENABLE_IL2CPP
+            returnDelegate = Return;
+#endif
         }
 
-        public static void SetStateMachine(ref AsyncUniTaskMethodBuilder<T> builder, ref TStateMachine stateMachine)
+        public static void SetStateMachine(ref TStateMachine stateMachine, ref IStateMachineRunnerPromise<T> runnerPromiseFieldRef)
         {
             if (!pool.TryPop(out var result))
             {
@@ -232,7 +279,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
             }
             TaskTracker.TrackActiveTask(result, 3);
 
-            builder.runnerPromise = result; // set runner before copied.
+            runnerPromiseFieldRef = result; // set runner before copied.
             result.stateMachine = stateMachine; // copy struct StateMachine(in release build).
         }
 
@@ -243,6 +290,14 @@ namespace Cysharp.Threading.Tasks.CompilerServices
             TaskPool.RegisterSizeGetter(typeof(AsyncUniTask<TStateMachine, T>), () => pool.Size);
         }
 
+        void Return()
+        {
+            TaskTracker.RemoveTracking(this);
+            core.Reset();
+            stateMachine = default;
+            pool.TryPush(this);
+        }
+
         bool TryReturn()
         {
             TaskTracker.RemoveTracking(this);
@@ -255,6 +310,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         void Run()
         {
+            // UnityEngine.Debug.Log($"MoveNext State:" + StateMachineUtility.GetState(stateMachine));
             stateMachine.MoveNext();
         }
 
@@ -288,7 +344,12 @@ namespace Cysharp.Threading.Tasks.CompilerServices
             }
             finally
             {
+#if ENABLE_IL2CPP
+                // workaround for IL2CPP bug.
+                PlayerLoopHelper.AddContinuation(PlayerLoopTiming.LastPostLateUpdate, returnDelegate);
+#else
                 TryReturn();
+#endif
             }
         }
 

src/UniTask/Assets/Plugins/UniTask/Runtime/EnumeratorAsyncExtensions.cs

@@ -12,10 +12,12 @@ namespace Cysharp.Threading.Tasks
 {
     public static class EnumeratorAsyncExtensions
     {
-        public static UniTask.Awaiter GetAwaiter(this IEnumerator enumerator)
+        public static UniTask.Awaiter GetAwaiter<T>(this T enumerator)
+            where T : IEnumerator
         {
-            Error.ThrowArgumentNullException(enumerator, nameof(enumerator));
-            return new UniTask(EnumeratorPromise.Create(enumerator, PlayerLoopTiming.Update, CancellationToken.None, out var token), token).GetAwaiter();
+            var e = (IEnumerator)enumerator;
+            Error.ThrowArgumentNullException(e, nameof(enumerator));
+            return new UniTask(EnumeratorPromise.Create(e, PlayerLoopTiming.Update, CancellationToken.None, out var token), token).GetAwaiter();
         }
 
         public static UniTask WithCancellation(this IEnumerator enumerator, CancellationToken cancellationToken)

src/UniTask/Assets/Plugins/UniTask/Runtime/External/AddressableAsyncExtensions.cs

@@ -23,7 +23,7 @@ namespace Cysharp.Threading.Tasks
         public static UniTask WithCancellation(this AsyncOperationHandle handle, CancellationToken cancellationToken)
         {
             if (handle.IsDone) return UniTask.CompletedTask;
-            return new UniTask(AsyncOperationHandleConfiguredSource.Create(handle, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
+            return new UniTask(AsyncOperationHandleWithCancellationSource.Create(handle, cancellationToken, out var token), token);
         }
 
         public static UniTask ToUniTask(this AsyncOperationHandle handle, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
@@ -77,6 +77,132 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
+        sealed class AsyncOperationHandleWithCancellationSource : IUniTaskSource, IPlayerLoopItem, ITaskPoolNode<AsyncOperationHandleWithCancellationSource>
+        {
+            static TaskPool<AsyncOperationHandleWithCancellationSource> pool;
+            public AsyncOperationHandleWithCancellationSource NextNode { get; set; }
+
+            static AsyncOperationHandleWithCancellationSource()
+            {
+                TaskPool.RegisterSizeGetter(typeof(AsyncOperationHandleWithCancellationSource), () => pool.Size);
+            }
+
+            readonly Action<AsyncOperationHandle> continuationAction;
+            AsyncOperationHandle handle;
+            CancellationToken cancellationToken;
+            bool completed;
+
+            UniTaskCompletionSourceCore<AsyncUnit> core;
+
+            AsyncOperationHandleWithCancellationSource()
+            {
+                continuationAction = Continuation;
+            }
+
+            public static IUniTaskSource Create(AsyncOperationHandle handle, CancellationToken cancellationToken, out short token)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return AutoResetUniTaskCompletionSource.CreateFromCanceled(cancellationToken, out token);
+                }
+
+                if (!pool.TryPop(out var result))
+                {
+                    result = new AsyncOperationHandleWithCancellationSource();
+                }
+
+                result.handle = handle;
+                result.cancellationToken = cancellationToken;
+                result.completed = false;
+
+                TaskTracker.TrackActiveTask(result, 3);
+
+                PlayerLoopHelper.AddAction(PlayerLoopTiming.Update, result);
+
+                handle.Completed += result.continuationAction;
+
+                token = result.core.Version;
+                return result;
+            }
+
+            void Continuation(AsyncOperationHandle _)
+            {
+                handle.Completed -= continuationAction;
+
+                if (completed)
+                {
+                    TryReturn();
+                }
+                else
+                {
+                    completed = true;
+                    if (handle.Status == AsyncOperationStatus.Failed)
+                    {
+                        core.TrySetException(handle.OperationException);
+                    }
+                    else
+                    {
+                        core.TrySetResult(AsyncUnit.Default);
+                    }
+                }
+            }
+
+            public void GetResult(short token)
+            {
+                core.GetResult(token);
+            }
+
+            public UniTaskStatus GetStatus(short token)
+            {
+                return core.GetStatus(token);
+            }
+
+            public UniTaskStatus UnsafeGetStatus()
+            {
+                return core.UnsafeGetStatus();
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token)
+            {
+                core.OnCompleted(continuation, state, token);
+            }
+
+            public bool MoveNext()
+            {
+                if (completed)
+                {
+                    TryReturn();
+                    return false;
+                }
+
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    completed = true;
+                    core.TrySetCanceled(cancellationToken);
+                    return false;
+                }
+
+                return true;
+            }
+
+            bool TryReturn()
+            {
+                TaskTracker.RemoveTracking(this);
+                core.Reset();
+                handle = default;
+                cancellationToken = default;
+                return pool.TryPush(this);
+            }
+
+            ~AsyncOperationHandleWithCancellationSource()
+            {
+                if (TryReturn())
+                {
+                    GC.ReRegisterForFinalize(this);
+                }
+            }
+        }
+
         sealed class AsyncOperationHandleConfiguredSource : IUniTaskSource, IPlayerLoopItem, ITaskPoolNode<AsyncOperationHandleConfiguredSource>
         {
             static TaskPool<AsyncOperationHandleConfiguredSource> pool;
@@ -210,7 +336,7 @@ namespace Cysharp.Threading.Tasks
         public static UniTask<T> WithCancellation<T>(this AsyncOperationHandle<T> handle, CancellationToken cancellationToken)
         {
             if (handle.IsDone) return UniTask.FromResult(handle.Result);
-            return new UniTask<T>(AsyncOperationHandleConfiguredSource<T>.Create(handle, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
+            return new UniTask<T>(AsyncOperationHandleWithCancellationSource<T>.Create(handle, cancellationToken, out var token), token);
         }
 
         public static UniTask<T> ToUniTask<T>(this AsyncOperationHandle<T> handle, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
@@ -265,6 +391,137 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
+        sealed class AsyncOperationHandleWithCancellationSource<T> : IUniTaskSource<T>, IPlayerLoopItem, ITaskPoolNode<AsyncOperationHandleWithCancellationSource<T>>
+        {
+            static TaskPool<AsyncOperationHandleWithCancellationSource<T>> pool;
+            public AsyncOperationHandleWithCancellationSource<T> NextNode { get; set; }
+
+            static AsyncOperationHandleWithCancellationSource()
+            {
+                TaskPool.RegisterSizeGetter(typeof(AsyncOperationHandleWithCancellationSource<T>), () => pool.Size);
+            }
+
+            readonly Action<AsyncOperationHandle<T>> continuationAction;
+            AsyncOperationHandle<T> handle;
+            CancellationToken cancellationToken;
+            bool completed;
+
+            UniTaskCompletionSourceCore<T> core;
+
+            AsyncOperationHandleWithCancellationSource()
+            {
+                continuationAction = Continuation;
+            }
+
+            public static IUniTaskSource<T> Create(AsyncOperationHandle<T> handle, CancellationToken cancellationToken, out short token)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return AutoResetUniTaskCompletionSource<T>.CreateFromCanceled(cancellationToken, out token);
+                }
+
+                if (!pool.TryPop(out var result))
+                {
+                    result = new AsyncOperationHandleWithCancellationSource<T>();
+                }
+
+                result.handle = handle;
+                result.cancellationToken = cancellationToken;
+                result.completed = false;
+
+                TaskTracker.TrackActiveTask(result, 3);
+
+                PlayerLoopHelper.AddAction(PlayerLoopTiming.Update, result);
+
+                handle.Completed += result.continuationAction;
+
+                token = result.core.Version;
+                return result;
+            }
+
+            void Continuation(AsyncOperationHandle<T> _)
+            {
+                handle.Completed -= continuationAction;
+
+                if (completed)
+                {
+                    TryReturn();
+                }
+                else
+                {
+                    completed = true;
+                    if (handle.Status == AsyncOperationStatus.Failed)
+                    {
+                        core.TrySetException(handle.OperationException);
+                    }
+                    else
+                    {
+                        core.TrySetResult(handle.Result);
+                    }
+                }
+            }
+
+            public T GetResult(short token)
+            {
+                return core.GetResult(token);
+            }
+
+            void IUniTaskSource.GetResult(short token)
+            {
+                GetResult(token);
+            }
+
+            public UniTaskStatus GetStatus(short token)
+            {
+                return core.GetStatus(token);
+            }
+
+            public UniTaskStatus UnsafeGetStatus()
+            {
+                return core.UnsafeGetStatus();
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token)
+            {
+                core.OnCompleted(continuation, state, token);
+            }
+
+            public bool MoveNext()
+            {
+                if (completed)
+                {
+                    TryReturn();
+                    return false;
+                }
+
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    completed = true;
+                    core.TrySetCanceled(cancellationToken);
+                    return false;
+                }
+
+                return true;
+            }
+
+            bool TryReturn()
+            {
+                TaskTracker.RemoveTracking(this);
+                core.Reset();
+                handle = default;
+                cancellationToken = default;
+                return pool.TryPush(this);
+            }
+
+            ~AsyncOperationHandleWithCancellationSource()
+            {
+                if (TryReturn())
+                {
+                    GC.ReRegisterForFinalize(this);
+                }
+            }
+        }
+
         sealed class AsyncOperationHandleConfiguredSource<T> : IUniTaskSource<T>, IPlayerLoopItem, ITaskPoolNode<AsyncOperationHandleConfiguredSource<T>>
         {
             static TaskPool<AsyncOperationHandleConfiguredSource<T>> pool;

src/UniTask/Assets/Plugins/UniTask/Runtime/External/DoTweenAsyncExtensions.cs

@@ -93,28 +93,30 @@ namespace Cysharp.Threading.Tasks
                 TaskPool.RegisterSizeGetter(typeof(TweenConfiguredSource), () => pool.Size);
             }
 
-            static readonly Action<object> CancellationCallbackDelegate = CancellationCallback;
             static readonly TweenCallback EmptyTweenCallback = () => { };
 
             readonly TweenCallback onKillDelegate;
+            readonly TweenCallback onUpdateDelegate;
 
             Tween tween;
             TweenCancelBehaviour cancelBehaviour;
             CancellationToken cancellationToken;
             bool canceled;
 
-            CancellationTokenRegistration cancellationTokenRegistration;
+            TweenCallback originalUpdateAction;
             UniTaskCompletionSourceCore<AsyncUnit> core;
 
             TweenConfiguredSource()
             {
                 onKillDelegate = OnKill;
+                onUpdateDelegate = OnUpdate;
             }
 
             public static IUniTaskSource Create(Tween tween, TweenCancelBehaviour cancelBehaviour, CancellationToken cancellationToken, out short token)
             {
                 if (cancellationToken.IsCancellationRequested)
                 {
+                    DoCancelBeforeCreate(tween, cancelBehaviour);
                     return AutoResetUniTaskCompletionSource.CreateFromCanceled(cancellationToken, out token);
                 }
 
@@ -127,27 +129,25 @@ namespace Cysharp.Threading.Tasks
                 result.cancelBehaviour = cancelBehaviour;
                 result.cancellationToken = cancellationToken;
 
-                TaskTracker.TrackActiveTask(result, 3);
+                result.originalUpdateAction = tween.onUpdate;
+                result.canceled = false;
 
-                result.RegisterEvent();
+                if (result.originalUpdateAction == result.onUpdateDelegate)
+                {
+                    result.originalUpdateAction = null;
+                }
+
+                tween.onUpdate = result.onUpdateDelegate;
+                tween.onKill = result.onKillDelegate;
+
+                TaskTracker.TrackActiveTask(result, 3);
 
                 token = result.core.Version;
                 return result;
             }
 
-            void RegisterEvent()
-            {
-                if (cancellationToken.CanBeCanceled)
-                {
-                    cancellationTokenRegistration = cancellationToken.RegisterWithoutCaptureExecutionContext(CancellationCallbackDelegate, this);
-                }
-
-                tween.OnKill(onKillDelegate);
-            }
-
             void OnKill()
             {
-                cancellationTokenRegistration.Dispose();
                 if (canceled)
                 {
                     core.TrySetCanceled(cancellationToken);
@@ -158,44 +158,84 @@ namespace Cysharp.Threading.Tasks
                 }
             }
 
-            static void CancellationCallback(object state)
+            void OnUpdate()
             {
-                var self = (TweenConfiguredSource)state;
+                originalUpdateAction?.Invoke();
 
-                switch (self.cancelBehaviour)
+                if (!cancellationToken.IsCancellationRequested)
+                {
+                    return;
+                }
+
+                switch (this.cancelBehaviour)
                 {
                     case TweenCancelBehaviour.Kill:
                     default:
-                        self.tween.Kill(false);
+                        this.tween.Kill(false);
                         break;
                     case TweenCancelBehaviour.KillAndCancelAwait:
-                        self.canceled = true;
-                        self.tween.Kill(false);
+                        this.canceled = true;
+                        this.tween.Kill(false);
                         break;
                     case TweenCancelBehaviour.KillWithCompleteCallback:
-                        self.tween.Kill(true);
+                        this.tween.Kill(true);
                         break;
                     case TweenCancelBehaviour.KillWithCompleteCallbackAndCancelAwait:
-                        self.canceled = true;
-                        self.tween.Kill(true);
+                        this.canceled = true;
+                        this.tween.Kill(true);
                         break;
                     case TweenCancelBehaviour.Complete:
-                        self.tween.Complete(false);
+                        this.tween.Complete(false);
                         break;
                     case TweenCancelBehaviour.CompleteAndCancelAwait:
-                        self.canceled = true;
-                        self.tween.Complete(false);
+                        this.canceled = true;
+                        this.tween.Complete(false);
                         break;
                     case TweenCancelBehaviour.CompleteWithSeqeunceCallback:
-                        self.tween.Complete(true);
+                        this.tween.Complete(true);
                         break;
                     case TweenCancelBehaviour.CompleteWithSeqeunceCallbackAndCancelAwait:
-                        self.canceled = true;
-                        self.tween.Complete(true);
+                        this.canceled = true;
+                        this.tween.Complete(true);
+                        break;
+                    case TweenCancelBehaviour.CancelAwait:
+                        this.tween.onKill = EmptyTweenCallback; // replace to empty(avoid callback after Canceled(instance is returned to pool.)
+                        this.core.TrySetCanceled(this.cancellationToken);
+                        break;
+                }
+            }
+
+            static void DoCancelBeforeCreate(Tween tween, TweenCancelBehaviour tweenCancelBehaviour)
+            {
+
+                switch (tweenCancelBehaviour)
+                {
+                    case TweenCancelBehaviour.Kill:
+                    default:
+                        tween.Kill(false);
+                        break;
+                    case TweenCancelBehaviour.KillAndCancelAwait:
+                        tween.Kill(false);
+                        break;
+                    case TweenCancelBehaviour.KillWithCompleteCallback:
+                        tween.Kill(true);
+                        break;
+                    case TweenCancelBehaviour.KillWithCompleteCallbackAndCancelAwait:
+                        tween.Kill(true);
+                        break;
+                    case TweenCancelBehaviour.Complete:
+                        tween.Complete(false);
+                        break;
+                    case TweenCancelBehaviour.CompleteAndCancelAwait:
+                        tween.Complete(false);
+                        break;
+                    case TweenCancelBehaviour.CompleteWithSeqeunceCallback:
+                        tween.Complete(true);
+                        break;
+                    case TweenCancelBehaviour.CompleteWithSeqeunceCallbackAndCancelAwait:
+                        tween.Complete(true);
                         break;
                     case TweenCancelBehaviour.CancelAwait:
-                        self.tween.onKill = EmptyTweenCallback; // replace to empty(avoid callback after Caceled(instance is returned to pool.)
-                        self.core.TrySetCanceled(self.cancellationToken);
                         break;
                 }
             }
@@ -212,7 +252,6 @@ namespace Cysharp.Threading.Tasks
                 }
             }
 
-
             public UniTaskStatus GetStatus(short token)
             {
                 return core.GetStatus(token);
@@ -232,8 +271,11 @@ namespace Cysharp.Threading.Tasks
             {
                 TaskTracker.RemoveTracking(this);
                 core.Reset();
+                tween.onUpdate = originalUpdateAction;
+                tween.onKill = null;
                 tween = default;
                 cancellationToken = default;
+                originalUpdateAction = default;
                 return pool.TryPush(this);
             }
 

src/UniTask/Assets/Plugins/UniTask/Runtime/IUniTaskSource.cs

@@ -19,7 +19,7 @@ namespace Cysharp.Threading.Tasks
 
     // similar as IValueTaskSource
     public interface IUniTaskSource
-#if !UNITY_2018_3_OR_NEWER
+#if !UNITY_2018_3_OR_NEWER && !NETSTANDARD2_0
         : System.Threading.Tasks.Sources.IValueTaskSource
 #pragma warning disable CS0108
 #endif
@@ -30,7 +30,7 @@ namespace Cysharp.Threading.Tasks
 
         UniTaskStatus UnsafeGetStatus(); // only for debug use.
 
-#if !UNITY_2018_3_OR_NEWER
+#if !UNITY_2018_3_OR_NEWER && !NETSTANDARD2_0
 #pragma warning restore CS0108
 
         System.Threading.Tasks.Sources.ValueTaskSourceStatus System.Threading.Tasks.Sources.IValueTaskSource.GetStatus(short token)
@@ -53,13 +53,13 @@ namespace Cysharp.Threading.Tasks
     }
 
     public interface IUniTaskSource<out T> : IUniTaskSource
-#if !UNITY_2018_3_OR_NEWER
+#if !UNITY_2018_3_OR_NEWER && !NETSTANDARD2_0
         , System.Threading.Tasks.Sources.IValueTaskSource<T>
 #endif
     {
         new T GetResult(short token);
 
-#if !UNITY_2018_3_OR_NEWER
+#if !UNITY_2018_3_OR_NEWER && !NETSTANDARD2_0
 
         new public UniTaskStatus GetStatus(short token)
         {

src/UniTask/Assets/Plugins/UniTask/Runtime/Internal/DiagnosticsExtensions.cs

@@ -239,7 +239,7 @@ namespace Cysharp.Threading.Tasks.Internal
             }
             else
             {
-                var fname = fi.FullName.Replace(Path.DirectorySeparatorChar, '/').Replace(Application.dataPath, "");
+                var fname = fi.FullName.Replace(Path.DirectorySeparatorChar, '/').Replace(PlayerLoopHelper.ApplicationDataPath, "");
                 var withAssetsPath = "Assets/" + fname;
                 return "<a href=\"" + withAssetsPath + "\" line=\"" + line + "\">" + withAssetsPath + ":" + line + "</a>";
             }

src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/Subscribe.cs

@@ -0,0 +1,263 @@
+using Cysharp.Threading.Tasks.Internal;
+using System;
+using System.Threading;
+using Subscribes = Cysharp.Threading.Tasks.Linq.Subscribe;
+
+namespace Cysharp.Threading.Tasks.Linq
+{
+    public static partial class UniTaskAsyncEnumerable
+    {
+        // OnNext
+
+        public static IDisposable Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Action<TSource> action)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(action, nameof(action));
+
+            var cts = new CancellationTokenDisposable();
+            Subscribes.SubscribeCore(source, action, Subscribes.NopError, Subscribes.NopCompleted, cts.Token).Forget();
+            return cts;
+        }
+
+        public static IDisposable Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, UniTaskVoid> action)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(action, nameof(action));
+
+            var cts = new CancellationTokenDisposable();
+            Subscribes.SubscribeCore(source, action, Subscribes.NopError, Subscribes.NopCompleted, cts.Token).Forget();
+            return cts;
+        }
+
+        public static void Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Action<TSource> action, CancellationToken cancellationToken)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(action, nameof(action));
+
+            Subscribes.SubscribeCore(source, action, Subscribes.NopError, Subscribes.NopCompleted, cancellationToken).Forget();
+        }
+
+        public static void Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, UniTaskVoid> action, CancellationToken cancellationToken)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(action, nameof(action));
+
+            Subscribes.SubscribeCore(source, action, Subscribes.NopError, Subscribes.NopCompleted, cancellationToken).Forget();
+        }
+
+        // OnNext, OnError
+
+        public static IDisposable Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Action<TSource> onNext, Action<Exception> onError)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(onNext, nameof(onNext));
+            Error.ThrowArgumentNullException(onError, nameof(onError));
+
+            var cts = new CancellationTokenDisposable();
+            Subscribes.SubscribeCore(source, onNext, onError, Subscribes.NopCompleted, cts.Token).Forget();
+            return cts;
+        }
+
+        public static IDisposable Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, UniTaskVoid> onNext, Action<Exception> onError)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(onNext, nameof(onNext));
+            Error.ThrowArgumentNullException(onError, nameof(onError));
+
+            var cts = new CancellationTokenDisposable();
+            Subscribes.SubscribeCore(source, onNext, onError, Subscribes.NopCompleted, cts.Token).Forget();
+            return cts;
+        }
+
+        public static void Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Action<TSource> onNext, Action<Exception> onError, CancellationToken cancellationToken)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(onNext, nameof(onNext));
+            Error.ThrowArgumentNullException(onError, nameof(onError));
+
+            Subscribes.SubscribeCore(source, onNext, onError, Subscribes.NopCompleted, cancellationToken).Forget();
+        }
+
+        public static void Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, UniTaskVoid> onNext, Action<Exception> onError, CancellationToken cancellationToken)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(onNext, nameof(onNext));
+            Error.ThrowArgumentNullException(onError, nameof(onError));
+
+            Subscribes.SubscribeCore(source, onNext, onError, Subscribes.NopCompleted, cancellationToken).Forget();
+        }
+
+        // OnNext, OnCompleted
+
+        public static IDisposable Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Action<TSource> onNext, Action onCompleted)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(onNext, nameof(onNext));
+            Error.ThrowArgumentNullException(onCompleted, nameof(onCompleted));
+
+            var cts = new CancellationTokenDisposable();
+            Subscribes.SubscribeCore(source, onNext, Subscribes.NopError, onCompleted, cts.Token).Forget();
+            return cts;
+        }
+
+        public static IDisposable Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, UniTaskVoid> onNext, Action onCompleted)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(onNext, nameof(onNext));
+            Error.ThrowArgumentNullException(onCompleted, nameof(onCompleted));
+
+            var cts = new CancellationTokenDisposable();
+            Subscribes.SubscribeCore(source, onNext, Subscribes.NopError, onCompleted, cts.Token).Forget();
+            return cts;
+        }
+
+        public static void Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Action<TSource> onNext, Action onCompleted, CancellationToken cancellationToken)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(onNext, nameof(onNext));
+            Error.ThrowArgumentNullException(onCompleted, nameof(onCompleted));
+
+            Subscribes.SubscribeCore(source, onNext, Subscribes.NopError, onCompleted, cancellationToken).Forget();
+        }
+
+        public static void Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, UniTaskVoid> onNext, Action onCompleted, CancellationToken cancellationToken)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(onNext, nameof(onNext));
+            Error.ThrowArgumentNullException(onCompleted, nameof(onCompleted));
+
+            Subscribes.SubscribeCore(source, onNext, Subscribes.NopError, onCompleted, cancellationToken).Forget();
+        }
+
+        // IObserver
+
+        public static IDisposable Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, IObserver<TSource> observer)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(observer, nameof(observer));
+
+            var cts = new CancellationTokenDisposable();
+            Subscribes.SubscribeCore(source, observer, cts.Token).Forget();
+            return cts;
+        }
+
+        public static void Subscribe<TSource>(this IUniTaskAsyncEnumerable<TSource> source, IObserver<TSource> observer, CancellationToken cancellationToken)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+            Error.ThrowArgumentNullException(observer, nameof(observer));
+
+            Subscribes.SubscribeCore(source, observer, cancellationToken).Forget();
+        }
+    }
+
+    internal sealed class CancellationTokenDisposable : IDisposable
+    {
+        readonly CancellationTokenSource cts = new CancellationTokenSource();
+
+        public CancellationToken Token => cts.Token;
+
+        public void Dispose()
+        {
+            if (!cts.IsCancellationRequested)
+            {
+                cts.Cancel();
+            }
+        }
+    }
+
+    internal static class Subscribe
+    {
+        public static readonly Action<Exception> NopError = _ => { };
+        public static readonly Action NopCompleted = () => { };
+
+        public static async UniTaskVoid SubscribeCore<TSource>(IUniTaskAsyncEnumerable<TSource> source, Action<TSource> onNext, Action<Exception> onError, Action onCompleted, CancellationToken cancellationToken)
+        {
+            var e = source.GetAsyncEnumerator(cancellationToken);
+            try
+            {
+                while (await e.MoveNextAsync())
+                {
+                    onNext(e.Current);
+                }
+                onCompleted();
+            }
+            catch (Exception ex)
+            {
+                if (onError == NopError)
+                {
+                    UniTaskScheduler.PublishUnobservedTaskException(ex);
+                    return;
+                }
+
+                if (ex is OperationCanceledException) return;
+
+                onError(ex);
+            }
+            finally
+            {
+                if (e != null)
+                {
+                    await e.DisposeAsync();
+                }
+            }
+        }
+
+        public static async UniTaskVoid SubscribeCore<TSource>(IUniTaskAsyncEnumerable<TSource> source, Func<TSource, UniTaskVoid> onNext, Action<Exception> onError, Action onCompleted, CancellationToken cancellationToken)
+        {
+            var e = source.GetAsyncEnumerator(cancellationToken);
+            try
+            {
+                while (await e.MoveNextAsync())
+                {
+                    onNext(e.Current).Forget();
+                }
+                onCompleted();
+            }
+            catch (Exception ex)
+            {
+                if (onError == NopError)
+                {
+                    UniTaskScheduler.PublishUnobservedTaskException(ex);
+                    return;
+                }
+
+                if (ex is OperationCanceledException) return;
+
+                onError(ex);
+            }
+            finally
+            {
+                if (e != null)
+                {
+                    await e.DisposeAsync();
+                }
+            }
+        }
+
+        public static async UniTaskVoid SubscribeCore<TSource>(IUniTaskAsyncEnumerable<TSource> source, IObserver<TSource> observer, CancellationToken cancellationToken)
+        {
+            var e = source.GetAsyncEnumerator(cancellationToken);
+            try
+            {
+                while (await e.MoveNextAsync())
+                {
+                    observer.OnNext(e.Current);
+                }
+                observer.OnCompleted();
+            }
+            catch (Exception ex)
+            {
+                if (ex is OperationCanceledException) return;
+
+                observer.OnError(ex);
+            }
+            finally
+            {
+                if (e != null)
+                {
+                    await e.DisposeAsync();
+                }
+            }
+        }
+    }
+}

src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/ToArray.cs

@@ -19,6 +19,8 @@ namespace Cysharp.Threading.Tasks.Linq
     {
         internal static async UniTask<TSource[]> ToArrayAsync<TSource>(IUniTaskAsyncEnumerable<TSource> source, CancellationToken cancellationToken)
         {
+            // UnityEngine.Debug.Log("Called ToArray");
+
             var pool = ArrayPool<TSource>.Shared;
             var array = pool.Rent(16);
 

src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/ToUniTaskAsyncEnumerable.cs

@@ -248,15 +248,18 @@ namespace Cysharp.Threading.Tasks.Linq
                         return current;
                     }
 
-                    if (queuedResult.Count != 0)
+                    lock (queuedResult)
                     {
-                        current = queuedResult.Dequeue();
-                        useCachedCurrent = true;
-                        return current;
-                    }
-                    else
-                    {
-                        return default; // undefined.
+                        if (queuedResult.Count != 0)
+                        {
+                            current = queuedResult.Dequeue();
+                            useCachedCurrent = true;
+                            return current;
+                        }
+                        else
+                        {
+                            return default; // undefined.
+                        }
                     }
                 }
             }

src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/UnityExtensions/EveryUpdate.cs

@@ -34,6 +34,7 @@ namespace Cysharp.Threading.Tasks.Linq
             public _EveryUpdate(PlayerLoopTiming updateTiming, CancellationToken cancellationToken)
             {
                 this.updateTiming = updateTiming;
+                this.cancellationToken = cancellationToken;
 
                 TaskTracker.TrackActiveTask(this, 2);
                 PlayerLoopHelper.AddAction(updateTiming, this);

src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/UnityExtensions/Timer.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Threading;
+using UnityEngine;
 
 namespace Cysharp.Threading.Tasks.Linq
 {
@@ -22,16 +23,34 @@ namespace Cysharp.Threading.Tasks.Linq
 
         public static IUniTaskAsyncEnumerable<AsyncUnit> TimerFrame(int dueTimeFrameCount, PlayerLoopTiming updateTiming = PlayerLoopTiming.Update)
         {
+            if (dueTimeFrameCount < 0)
+            {
+                throw new ArgumentOutOfRangeException("Delay does not allow minus delayFrameCount. dueTimeFrameCount:" + dueTimeFrameCount);
+            }
+
             return new TimerFrame(dueTimeFrameCount, null, updateTiming);
         }
 
         public static IUniTaskAsyncEnumerable<AsyncUnit> TimerFrame(int dueTimeFrameCount, int periodFrameCount, PlayerLoopTiming updateTiming = PlayerLoopTiming.Update)
         {
+            if (dueTimeFrameCount < 0)
+            {
+                throw new ArgumentOutOfRangeException("Delay does not allow minus delayFrameCount. dueTimeFrameCount:" + dueTimeFrameCount);
+            }
+            if (periodFrameCount < 0)
+            {
+                throw new ArgumentOutOfRangeException("Delay does not allow minus periodFrameCount. periodFrameCount:" + dueTimeFrameCount);
+            }
+
             return new TimerFrame(dueTimeFrameCount, periodFrameCount, updateTiming);
         }
 
         public static IUniTaskAsyncEnumerable<AsyncUnit> IntervalFrame(int intervalFrameCount, PlayerLoopTiming updateTiming = PlayerLoopTiming.Update)
         {
+            if (intervalFrameCount < 0)
+            {
+                throw new ArgumentOutOfRangeException("Delay does not allow minus intervalFrameCount. intervalFrameCount:" + intervalFrameCount);
+            }
             return new TimerFrame(intervalFrameCount, intervalFrameCount, updateTiming);
         }
     }
@@ -64,6 +83,7 @@ namespace Cysharp.Threading.Tasks.Linq
             readonly bool ignoreTimeScale;
             CancellationToken cancellationToken;
 
+            int initialFrame;
             float elapsed;
             bool dueTimePhase;
             bool completed;
@@ -80,9 +100,11 @@ namespace Cysharp.Threading.Tasks.Linq
                     if (this.period <= 0) this.period = 1;
                 }
 
+                this.initialFrame = Time.frameCount;
                 this.dueTimePhase = true;
                 this.updateTiming = updateTiming;
                 this.ignoreTimeScale = ignoreTimeScale;
+                this.cancellationToken = cancellationToken;
                 TaskTracker.TrackActiveTask(this, 2);
                 PlayerLoopHelper.AddAction(updateTiming, this);
             }
@@ -119,9 +141,19 @@ namespace Cysharp.Threading.Tasks.Linq
                     return false;
                 }
 
-                elapsed += (ignoreTimeScale) ? UnityEngine.Time.unscaledDeltaTime : UnityEngine.Time.deltaTime;
                 if (dueTimePhase)
                 {
+                    if (elapsed == 0)
+                    {
+                        // skip in initial frame.
+                        if (initialFrame == Time.frameCount)
+                        {
+                            return true;
+                        }
+                    }
+
+                    elapsed += (ignoreTimeScale) ? UnityEngine.Time.unscaledDeltaTime : UnityEngine.Time.deltaTime;
+
                     if (elapsed >= dueTime)
                     {
                         dueTimePhase = false;
@@ -137,6 +169,8 @@ namespace Cysharp.Threading.Tasks.Linq
                         return false;
                     }
 
+                    elapsed += (ignoreTimeScale) ? UnityEngine.Time.unscaledDeltaTime : UnityEngine.Time.deltaTime;
+
                     if (elapsed >= period)
                     {
                         completionSource.TrySetResult(true);
@@ -172,6 +206,7 @@ namespace Cysharp.Threading.Tasks.Linq
             readonly int? periodFrameCount;
             CancellationToken cancellationToken;
 
+            int initialFrame;
             int currentFrame;
             bool dueTimePhase;
             bool completed;
@@ -185,9 +220,11 @@ namespace Cysharp.Threading.Tasks.Linq
                     if (periodFrameCount <= 0) periodFrameCount = 1;
                 }
 
+                this.initialFrame = Time.frameCount;
                 this.dueTimePhase = true;
                 this.dueTimeFrameCount = dueTimeFrameCount;
                 this.periodFrameCount = periodFrameCount;
+                this.cancellationToken = cancellationToken;
 
                 TaskTracker.TrackActiveTask(this, 2);
                 PlayerLoopHelper.AddAction(updateTiming, this);
@@ -228,11 +265,30 @@ namespace Cysharp.Threading.Tasks.Linq
 
                 if (dueTimePhase)
                 {
-                    if (currentFrame++ >= dueTimeFrameCount)
+                    if (currentFrame == 0)
+                    {
+                        if (dueTimeFrameCount == 0)
+                        {
+                            dueTimePhase = false;
+                            completionSource.TrySetResult(true);
+                            return true;
+                        }
+
+                        // skip in initial frame.
+                        if (initialFrame == Time.frameCount)
+                        {
+                            return true;
+                        }
+                    }
+
+                    if (++currentFrame >= dueTimeFrameCount)
                     {
                         dueTimePhase = false;
                         completionSource.TrySetResult(true);
                     }
+                    else
+                    {
+                    }
                 }
                 else
                 {

src/UniTask/Assets/Plugins/UniTask/Runtime/PlayerLoopHelper.cs

@@ -92,8 +92,10 @@ namespace Cysharp.Threading.Tasks
     {
         public static SynchronizationContext UnitySynchronizationContext => unitySynchronizationContetext;
         public static int MainThreadId => mainThreadId;
+        internal static string ApplicationDataPath => applicationDataPath;
 
         static int mainThreadId;
+        static string applicationDataPath;
         static SynchronizationContext unitySynchronizationContetext;
         static ContinuationQueue[] yielders;
         static PlayerLoopRunner[] runners;
@@ -177,6 +179,11 @@ namespace Cysharp.Threading.Tasks
             // capture default(unity) sync-context.
             unitySynchronizationContetext = SynchronizationContext.Current;
             mainThreadId = Thread.CurrentThread.ManagedThreadId;
+            try
+            {
+                applicationDataPath = Application.dataPath;
+            }
+            catch { }
 
 #if UNITY_EDITOR && UNITY_2019_3_OR_NEWER
             // When domain reload is disabled, re-initialization is required when entering play mode; 

src/UniTask/Assets/Plugins/UniTask/Runtime/UniTask.Delay.cs

@@ -3,7 +3,6 @@
 using System;
 using System.Runtime.CompilerServices;
 using System.Threading;
-using Cysharp.Threading.Tasks.Internal;
 using UnityEngine;
 
 namespace Cysharp.Threading.Tasks
@@ -21,6 +20,46 @@ namespace Cysharp.Threading.Tasks
             return new UniTask(YieldPromise.Create(timing, cancellationToken, out var token), token);
         }
 
+        /// <summary>
+        /// Similar as UniTask.Yield but guaranteed run on next frame.
+        /// </summary>
+        public static UniTask NextFrame(PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default)
+        {
+            return new UniTask(NextFramePromise.Create(timing, cancellationToken, out var token), token);
+        }
+
+        /// <summary>
+        /// Same as UniTask.Yield(PlayerLoopTiming.LastPostLateUpdate).
+        /// </summary>
+        public static YieldAwaitable WaitForEndOfFrame()
+        {
+            return UniTask.Yield(PlayerLoopTiming.LastPostLateUpdate);
+        }
+
+        /// <summary>
+        /// Same as UniTask.Yield(PlayerLoopTiming.LastPostLateUpdate, cancellationToken).
+        /// </summary>
+        public static UniTask WaitForEndOfFrame(CancellationToken cancellationToken)
+        {
+            return UniTask.Yield(PlayerLoopTiming.LastPostLateUpdate, cancellationToken);
+        }
+
+        /// <summary>
+        /// Same as UniTask.Yield(PlayerLoopTiming.FixedUpdate).
+        /// </summary>
+        public static YieldAwaitable WaitForFixedUpdate()
+        {
+            return UniTask.Yield(PlayerLoopTiming.FixedUpdate);
+        }
+
+        /// <summary>
+        /// Same as UniTask.Yield(PlayerLoopTiming.FixedUpdate, cancellationToken).
+        /// </summary>
+        public static UniTask WaitForFixedUpdate(CancellationToken cancellationToken)
+        {
+            return UniTask.Yield(PlayerLoopTiming.FixedUpdate, cancellationToken);
+        }
+
         public static UniTask DelayFrame(int delayFrameCount, PlayerLoopTiming delayTiming = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
         {
             if (delayFrameCount < 0)
@@ -152,27 +191,25 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-        sealed class DelayFramePromise : IUniTaskSource, IPlayerLoopItem, ITaskPoolNode<DelayFramePromise>
+        sealed class NextFramePromise : IUniTaskSource, IPlayerLoopItem, ITaskPoolNode<NextFramePromise>
         {
-            static TaskPool<DelayFramePromise> pool;
-            public DelayFramePromise NextNode { get; set; }
+            static TaskPool<NextFramePromise> pool;
+            public NextFramePromise NextNode { get; set; }
 
-            static DelayFramePromise()
+            static NextFramePromise()
             {
-                TaskPool.RegisterSizeGetter(typeof(DelayFramePromise), () => pool.Size);
+                TaskPool.RegisterSizeGetter(typeof(NextFramePromise), () => pool.Size);
             }
 
-            int delayFrameCount;
+            int frameCount;
             CancellationToken cancellationToken;
+            UniTaskCompletionSourceCore<AsyncUnit> core;
 
-            int currentFrameCount;
-            UniTaskCompletionSourceCore<object> core;
-
-            DelayFramePromise()
+            NextFramePromise()
             {
             }
 
-            public static IUniTaskSource Create(int delayFrameCount, PlayerLoopTiming timing, CancellationToken cancellationToken, out short token)
+            public static IUniTaskSource Create(PlayerLoopTiming timing, CancellationToken cancellationToken, out short token)
             {
                 if (cancellationToken.IsCancellationRequested)
                 {
@@ -181,10 +218,10 @@ namespace Cysharp.Threading.Tasks
 
                 if (!pool.TryPop(out var result))
                 {
-                    result = new DelayFramePromise();
+                    result = new NextFramePromise();
                 }
 
-                result.delayFrameCount = delayFrameCount;
+                result.frameCount = Time.frameCount;
                 result.cancellationToken = cancellationToken;
 
                 TaskTracker.TrackActiveTask(result, 3);
@@ -230,13 +267,133 @@ namespace Cysharp.Threading.Tasks
                     return false;
                 }
 
-                if (currentFrameCount == delayFrameCount)
+                if (frameCount == Time.frameCount)
                 {
-                    core.TrySetResult(null);
+                    return true;
+                }
+
+                core.TrySetResult(AsyncUnit.Default);
+                return false;
+            }
+
+            bool TryReturn()
+            {
+                TaskTracker.RemoveTracking(this);
+                core.Reset();
+                cancellationToken = default;
+                return pool.TryPush(this);
+            }
+
+            ~NextFramePromise()
+            {
+                if (TryReturn())
+                {
+                    GC.ReRegisterForFinalize(this);
+                }
+            }
+        }
+
+        sealed class DelayFramePromise : IUniTaskSource, IPlayerLoopItem, ITaskPoolNode<DelayFramePromise>
+        {
+            static TaskPool<DelayFramePromise> pool;
+            public DelayFramePromise NextNode { get; set; }
+
+            static DelayFramePromise()
+            {
+                TaskPool.RegisterSizeGetter(typeof(DelayFramePromise), () => pool.Size);
+            }
+
+            int initialFrame;
+            int delayFrameCount;
+            CancellationToken cancellationToken;
+
+            int currentFrameCount;
+            UniTaskCompletionSourceCore<AsyncUnit> core;
+
+            DelayFramePromise()
+            {
+            }
+
+            public static IUniTaskSource Create(int delayFrameCount, PlayerLoopTiming timing, CancellationToken cancellationToken, out short token)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return AutoResetUniTaskCompletionSource.CreateFromCanceled(cancellationToken, out token);
+                }
+
+                if (!pool.TryPop(out var result))
+                {
+                    result = new DelayFramePromise();
+                }
+
+                result.delayFrameCount = delayFrameCount;
+                result.cancellationToken = cancellationToken;
+                result.initialFrame = Time.frameCount;
+
+                TaskTracker.TrackActiveTask(result, 3);
+
+                PlayerLoopHelper.AddAction(timing, result);
+
+                token = result.core.Version;
+                return result;
+            }
+
+            public void GetResult(short token)
+            {
+                try
+                {
+                    core.GetResult(token);
+                }
+                finally
+                {
+                    TryReturn();
+                }
+            }
+
+            public UniTaskStatus GetStatus(short token)
+            {
+                return core.GetStatus(token);
+            }
+
+            public UniTaskStatus UnsafeGetStatus()
+            {
+                return core.UnsafeGetStatus();
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token)
+            {
+                core.OnCompleted(continuation, state, token);
+            }
+
+            public bool MoveNext()
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    core.TrySetCanceled(cancellationToken);
+                    return false;
+                }
+
+                if (currentFrameCount == 0)
+                {
+                    if (delayFrameCount == 0) // same as Yield
+                    {
+                        core.TrySetResult(AsyncUnit.Default);
+                        return false;
+                    }
+
+                    // skip in initial frame.
+                    if (initialFrame == Time.frameCount)
+                    {
+                        return true;
+                    }
+                }
+
+                if (++currentFrameCount >= delayFrameCount)
+                {
+                    core.TrySetResult(AsyncUnit.Default);
                     return false;
                 }
 
-                currentFrameCount++;
                 return true;
             }
 
@@ -269,6 +426,7 @@ namespace Cysharp.Threading.Tasks
                 TaskPool.RegisterSizeGetter(typeof(DelayPromise), () => pool.Size);
             }
 
+            int initialFrame;
             float delayFrameTimeSpan;
             float elapsed;
             CancellationToken cancellationToken;
@@ -294,6 +452,7 @@ namespace Cysharp.Threading.Tasks
                 result.elapsed = 0.0f;
                 result.delayFrameTimeSpan = (float)delayFrameTimeSpan.TotalSeconds;
                 result.cancellationToken = cancellationToken;
+                result.initialFrame = Time.frameCount;
 
                 TaskTracker.TrackActiveTask(result, 3);
 
@@ -338,6 +497,14 @@ namespace Cysharp.Threading.Tasks
                     return false;
                 }
 
+                if (elapsed == 0.0f)
+                {
+                    if (initialFrame == Time.frameCount)
+                    {
+                        return true;
+                    }
+                }
+
                 elapsed += Time.deltaTime;
                 if (elapsed >= delayFrameTimeSpan)
                 {
@@ -379,6 +546,7 @@ namespace Cysharp.Threading.Tasks
 
             float delayFrameTimeSpan;
             float elapsed;
+            int initialFrame;
             CancellationToken cancellationToken;
 
             UniTaskCompletionSourceCore<object> core;
@@ -401,6 +569,7 @@ namespace Cysharp.Threading.Tasks
 
                 result.elapsed = 0.0f;
                 result.delayFrameTimeSpan = (float)delayFrameTimeSpan.TotalSeconds;
+                result.initialFrame = Time.frameCount;
                 result.cancellationToken = cancellationToken;
 
                 TaskTracker.TrackActiveTask(result, 3);
@@ -446,6 +615,14 @@ namespace Cysharp.Threading.Tasks
                     return false;
                 }
 
+                if (elapsed == 0.0f)
+                {
+                    if (initialFrame == Time.frameCount)
+                    {
+                        return true;
+                    }
+                }
+
                 elapsed += Time.unscaledDeltaTime;
                 if (elapsed >= delayFrameTimeSpan)
                 {

src/UniTask/Assets/Plugins/UniTask/Runtime/UniTask.Factory.cs

@@ -204,7 +204,7 @@ namespace Cysharp.Threading.Tasks
                 if (f == null) throw new InvalidOperationException("Can't call twice.");
 
                 task = f();
-                awaiter = f().GetAwaiter();
+                awaiter = task.GetAwaiter();
                 return task.Status;
             }
 
@@ -246,7 +246,7 @@ namespace Cysharp.Threading.Tasks
                 if (f == null) throw new InvalidOperationException("Can't call twice.");
 
                 task = f();
-                awaiter = f().GetAwaiter();
+                awaiter = task.GetAwaiter();
                 return task.Status;
             }
 

src/UniTask/Assets/Plugins/UniTask/Runtime/UniTask.Threading.cs

@@ -351,6 +351,8 @@ namespace Cysharp.Threading.Tasks
             {
                 get
                 {
+                    if (!dontPostWhenSameContext) return false;
+
                     var current = SynchronizationContext.Current;
                     if (current == synchronizationContext)
                     {

src/UniTask/Assets/Plugins/UniTask/Runtime/UniTask.cs

@@ -78,7 +78,11 @@ namespace Cysharp.Threading.Tasks
                 return default;
             }
 
+#if NETSTANDARD2_0
+            return self.AsValueTask();
+#else
             return new System.Threading.Tasks.ValueTask(self.source, self.token);
+#endif
         }
 
 #endif
@@ -439,7 +443,11 @@ namespace Cysharp.Threading.Tasks
                 return new System.Threading.Tasks.ValueTask<T>(self.result);
             }
 
+#if NETSTANDARD2_0
+            return self.AsValueTask();
+#else
             return new System.Threading.Tasks.ValueTask<T>(self.source, self.token);
+#endif
         }
 
 #endif

src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskExtensions.cs

@@ -621,9 +621,8 @@ namespace Cysharp.Threading.Tasks
 
                 if (exception != null)
                 {
-                    // throw exception on iterator (main)thread.
-                    // unfortunately unity test-runner can not handle throw exception on hand-write IEnumerator.MoveNext.
-                    UnityEngine.Debug.LogException(exception.SourceException);
+                    exception.Throw();
+                    return false;
                 }
 
                 return !completed;
@@ -692,9 +691,8 @@ namespace Cysharp.Threading.Tasks
 
                 if (exception != null)
                 {
-                    // throw exception on iterator (main)thread.
-                    // unfortunately unity test-runner can not handle throw exception on hand-write IEnumerator.MoveNext.
-                    UnityEngine.Debug.LogException(exception.SourceException);
+                    exception.Throw();
+                    return false;
                 }
 
                 return !completed;

src/UniTask/Assets/Plugins/UniTask/Runtime/UnityAsyncExtensions.cs

@@ -25,7 +25,7 @@ namespace Cysharp.Threading.Tasks
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
             if (asyncOperation.isDone) return UniTask.CompletedTask;
-            return new UniTask(AsyncOperationConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
+            return new UniTask(AsyncOperationWithCancellationSource.Create(asyncOperation, cancellationToken, out var token), token);
         }
 
         public static UniTask ToUniTask(this AsyncOperation asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
@@ -75,7 +75,127 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-        class AsyncOperationConfiguredSource : IUniTaskSource, IPlayerLoopItem, ITaskPoolNode<AsyncOperationConfiguredSource>
+        sealed class AsyncOperationWithCancellationSource : IUniTaskSource, IPlayerLoopItem, ITaskPoolNode<AsyncOperationWithCancellationSource>
+        {
+            static TaskPool<AsyncOperationWithCancellationSource> pool;
+            public AsyncOperationWithCancellationSource NextNode { get; set; }
+
+            static AsyncOperationWithCancellationSource()
+            {
+                TaskPool.RegisterSizeGetter(typeof(AsyncOperationWithCancellationSource), () => pool.Size);
+            }
+
+            readonly Action<AsyncOperation> continuationAction;
+            AsyncOperation asyncOperation;
+            CancellationToken cancellationToken;
+            bool completed;
+
+            UniTaskCompletionSourceCore<AsyncUnit> core;
+
+            AsyncOperationWithCancellationSource()
+            {
+                continuationAction = Continuation;
+            }
+
+            public static IUniTaskSource Create(AsyncOperation asyncOperation, CancellationToken cancellationToken, out short token)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return AutoResetUniTaskCompletionSource.CreateFromCanceled(cancellationToken, out token);
+                }
+
+                if (!pool.TryPop(out var result))
+                {
+                    result = new AsyncOperationWithCancellationSource();
+                }
+
+                result.asyncOperation = asyncOperation;
+                result.cancellationToken = cancellationToken;
+                result.completed = false;
+
+                TaskTracker.TrackActiveTask(result, 3);
+
+                PlayerLoopHelper.AddAction(PlayerLoopTiming.Update, result);
+
+                asyncOperation.completed += result.continuationAction;
+
+                token = result.core.Version;
+                return result;
+            }
+
+            void Continuation(AsyncOperation _)
+            {
+                asyncOperation.completed -= continuationAction;
+
+                if (completed)
+                {
+                    TryReturn();
+                }
+                else
+                {
+                    completed = true;
+                    core.TrySetResult(AsyncUnit.Default);
+                }
+            }
+
+            public void GetResult(short token)
+            {
+                core.GetResult(token);
+            }
+
+
+            public UniTaskStatus GetStatus(short token)
+            {
+                return core.GetStatus(token);
+            }
+
+            public UniTaskStatus UnsafeGetStatus()
+            {
+                return core.UnsafeGetStatus();
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token)
+            {
+                core.OnCompleted(continuation, state, token);
+            }
+
+            public bool MoveNext()
+            {
+                if (completed)
+                {
+                    TryReturn();
+                    return false;
+                }
+
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    completed = true;
+                    core.TrySetCanceled(cancellationToken);
+                    return false;
+                }
+
+                return true;
+            }
+
+            bool TryReturn()
+            {
+                TaskTracker.RemoveTracking(this);
+                core.Reset();
+                asyncOperation = default;
+                cancellationToken = default;
+                return pool.TryPush(this);
+            }
+
+            ~AsyncOperationWithCancellationSource()
+            {
+                if (TryReturn())
+                {
+                    GC.ReRegisterForFinalize(this);
+                }
+            }
+        }
+
+        sealed class AsyncOperationConfiguredSource : IUniTaskSource, IPlayerLoopItem, ITaskPoolNode<AsyncOperationConfiguredSource>
         {
             static TaskPool<AsyncOperationConfiguredSource> pool;
             public AsyncOperationConfiguredSource NextNode { get; set; }
@@ -124,7 +244,6 @@ namespace Cysharp.Threading.Tasks
             {
                 try
                 {
-
                     core.GetResult(token);
                 }
                 finally
@@ -133,6 +252,7 @@ namespace Cysharp.Threading.Tasks
                 }
             }
 
+
             public UniTaskStatus GetStatus(short token)
             {
                 return core.GetStatus(token);
@@ -203,7 +323,7 @@ namespace Cysharp.Threading.Tasks
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
             if (asyncOperation.isDone) return UniTask.FromResult(asyncOperation.asset);
-            return new UniTask<UnityEngine.Object>(ResourceRequestConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
+            return new UniTask<UnityEngine.Object>(ResourceRequestWithCancellationSource.Create(asyncOperation, cancellationToken, out var token), token);
         }
 
         public static UniTask<UnityEngine.Object> ToUniTask(this ResourceRequest asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
@@ -257,7 +377,131 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-        class ResourceRequestConfiguredSource : IUniTaskSource<UnityEngine.Object>, IPlayerLoopItem, ITaskPoolNode<ResourceRequestConfiguredSource>
+        sealed class ResourceRequestWithCancellationSource : IUniTaskSource<UnityEngine.Object>, IPlayerLoopItem, ITaskPoolNode<ResourceRequestWithCancellationSource>
+        {
+            static TaskPool<ResourceRequestWithCancellationSource> pool;
+            public ResourceRequestWithCancellationSource NextNode { get; set; }
+
+            static ResourceRequestWithCancellationSource()
+            {
+                TaskPool.RegisterSizeGetter(typeof(ResourceRequestWithCancellationSource), () => pool.Size);
+            }
+
+            readonly Action<AsyncOperation> continuationAction;
+            ResourceRequest asyncOperation;
+            CancellationToken cancellationToken;
+            bool completed;
+
+            UniTaskCompletionSourceCore<UnityEngine.Object> core;
+
+            ResourceRequestWithCancellationSource()
+            {
+                continuationAction = Continuation;
+            }
+
+            public static IUniTaskSource<UnityEngine.Object> Create(ResourceRequest asyncOperation, CancellationToken cancellationToken, out short token)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return AutoResetUniTaskCompletionSource<UnityEngine.Object>.CreateFromCanceled(cancellationToken, out token);
+                }
+
+                if (!pool.TryPop(out var result))
+                {
+                    result = new ResourceRequestWithCancellationSource();
+                }
+
+                result.asyncOperation = asyncOperation;
+                result.cancellationToken = cancellationToken;
+                result.completed = false;
+
+                TaskTracker.TrackActiveTask(result, 3);
+
+                PlayerLoopHelper.AddAction(PlayerLoopTiming.Update, result);
+
+                asyncOperation.completed += result.continuationAction;
+
+                token = result.core.Version;
+                return result;
+            }
+
+            void Continuation(AsyncOperation _)
+            {
+                asyncOperation.completed -= continuationAction;
+
+                if (completed)
+                {
+                    TryReturn();
+                }
+                else
+                {
+                    completed = true;
+                    core.TrySetResult(asyncOperation.asset);
+                }
+            }
+
+            public UnityEngine.Object GetResult(short token)
+            {
+                return core.GetResult(token);
+            }
+
+            void IUniTaskSource.GetResult(short token)
+            {
+                GetResult(token);
+            }
+
+            public UniTaskStatus GetStatus(short token)
+            {
+                return core.GetStatus(token);
+            }
+
+            public UniTaskStatus UnsafeGetStatus()
+            {
+                return core.UnsafeGetStatus();
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token)
+            {
+                core.OnCompleted(continuation, state, token);
+            }
+
+            public bool MoveNext()
+            {
+                if (completed)
+                {
+                    TryReturn();
+                    return false;
+                }
+
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    completed = true;
+                    core.TrySetCanceled(cancellationToken);
+                    return false;
+                }
+
+                return true;
+            }
+
+            bool TryReturn()
+            {
+                TaskTracker.RemoveTracking(this);
+                core.Reset();
+                asyncOperation = default;
+                cancellationToken = default;
+                return pool.TryPush(this);
+            }
+
+            ~ResourceRequestWithCancellationSource()
+            {
+                if (TryReturn())
+                {
+                    GC.ReRegisterForFinalize(this);
+                }
+            }
+        }
+
+        sealed class ResourceRequestConfiguredSource : IUniTaskSource<UnityEngine.Object>, IPlayerLoopItem, ITaskPoolNode<ResourceRequestConfiguredSource>
         {
             static TaskPool<ResourceRequestConfiguredSource> pool;
             public ResourceRequestConfiguredSource NextNode { get; set; }
@@ -306,7 +550,6 @@ namespace Cysharp.Threading.Tasks
             {
                 try
                 {
-
                     return core.GetResult(token);
                 }
                 finally
@@ -390,7 +633,7 @@ namespace Cysharp.Threading.Tasks
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
             if (asyncOperation.isDone) return UniTask.FromResult(asyncOperation.asset);
-            return new UniTask<UnityEngine.Object>(AssetBundleRequestConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
+            return new UniTask<UnityEngine.Object>(AssetBundleRequestWithCancellationSource.Create(asyncOperation, cancellationToken, out var token), token);
         }
 
         public static UniTask<UnityEngine.Object> ToUniTask(this AssetBundleRequest asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
@@ -444,7 +687,131 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-        class AssetBundleRequestConfiguredSource : IUniTaskSource<UnityEngine.Object>, IPlayerLoopItem, ITaskPoolNode<AssetBundleRequestConfiguredSource>
+        sealed class AssetBundleRequestWithCancellationSource : IUniTaskSource<UnityEngine.Object>, IPlayerLoopItem, ITaskPoolNode<AssetBundleRequestWithCancellationSource>
+        {
+            static TaskPool<AssetBundleRequestWithCancellationSource> pool;
+            public AssetBundleRequestWithCancellationSource NextNode { get; set; }
+
+            static AssetBundleRequestWithCancellationSource()
+            {
+                TaskPool.RegisterSizeGetter(typeof(AssetBundleRequestWithCancellationSource), () => pool.Size);
+            }
+
+            readonly Action<AsyncOperation> continuationAction;
+            AssetBundleRequest asyncOperation;
+            CancellationToken cancellationToken;
+            bool completed;
+
+            UniTaskCompletionSourceCore<UnityEngine.Object> core;
+
+            AssetBundleRequestWithCancellationSource()
+            {
+                continuationAction = Continuation;
+            }
+
+            public static IUniTaskSource<UnityEngine.Object> Create(AssetBundleRequest asyncOperation, CancellationToken cancellationToken, out short token)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return AutoResetUniTaskCompletionSource<UnityEngine.Object>.CreateFromCanceled(cancellationToken, out token);
+                }
+
+                if (!pool.TryPop(out var result))
+                {
+                    result = new AssetBundleRequestWithCancellationSource();
+                }
+
+                result.asyncOperation = asyncOperation;
+                result.cancellationToken = cancellationToken;
+                result.completed = false;
+
+                TaskTracker.TrackActiveTask(result, 3);
+
+                PlayerLoopHelper.AddAction(PlayerLoopTiming.Update, result);
+
+                asyncOperation.completed += result.continuationAction;
+
+                token = result.core.Version;
+                return result;
+            }
+
+            void Continuation(AsyncOperation _)
+            {
+                asyncOperation.completed -= continuationAction;
+
+                if (completed)
+                {
+                    TryReturn();
+                }
+                else
+                {
+                    completed = true;
+                    core.TrySetResult(asyncOperation.asset);
+                }
+            }
+
+            public UnityEngine.Object GetResult(short token)
+            {
+                return core.GetResult(token);
+            }
+
+            void IUniTaskSource.GetResult(short token)
+            {
+                GetResult(token);
+            }
+
+            public UniTaskStatus GetStatus(short token)
+            {
+                return core.GetStatus(token);
+            }
+
+            public UniTaskStatus UnsafeGetStatus()
+            {
+                return core.UnsafeGetStatus();
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token)
+            {
+                core.OnCompleted(continuation, state, token);
+            }
+
+            public bool MoveNext()
+            {
+                if (completed)
+                {
+                    TryReturn();
+                    return false;
+                }
+
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    completed = true;
+                    core.TrySetCanceled(cancellationToken);
+                    return false;
+                }
+
+                return true;
+            }
+
+            bool TryReturn()
+            {
+                TaskTracker.RemoveTracking(this);
+                core.Reset();
+                asyncOperation = default;
+                cancellationToken = default;
+                return pool.TryPush(this);
+            }
+
+            ~AssetBundleRequestWithCancellationSource()
+            {
+                if (TryReturn())
+                {
+                    GC.ReRegisterForFinalize(this);
+                }
+            }
+        }
+
+        sealed class AssetBundleRequestConfiguredSource : IUniTaskSource<UnityEngine.Object>, IPlayerLoopItem, ITaskPoolNode<AssetBundleRequestConfiguredSource>
         {
             static TaskPool<AssetBundleRequestConfiguredSource> pool;
             public AssetBundleRequestConfiguredSource NextNode { get; set; }
@@ -545,11 +912,11 @@ namespace Cysharp.Threading.Tasks
 
             bool TryReturn()
             {
+                TaskTracker.RemoveTracking(this);
                 core.Reset();
                 asyncOperation = default;
                 progress = default;
                 cancellationToken = default;
-                TaskTracker.RemoveTracking(this);
                 return pool.TryPush(this);
             }
 
@@ -576,7 +943,7 @@ namespace Cysharp.Threading.Tasks
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
             if (asyncOperation.isDone) return UniTask.FromResult(asyncOperation.assetBundle);
-            return new UniTask<AssetBundle>(AssetBundleCreateRequestConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
+            return new UniTask<AssetBundle>(AssetBundleCreateRequestWithCancellationSource.Create(asyncOperation, cancellationToken, out var token), token);
         }
 
         public static UniTask<AssetBundle> ToUniTask(this AssetBundleCreateRequest asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
@@ -630,7 +997,131 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-        class AssetBundleCreateRequestConfiguredSource : IUniTaskSource<AssetBundle>, IPlayerLoopItem, ITaskPoolNode<AssetBundleCreateRequestConfiguredSource>
+        sealed class AssetBundleCreateRequestWithCancellationSource : IUniTaskSource<AssetBundle>, IPlayerLoopItem, ITaskPoolNode<AssetBundleCreateRequestWithCancellationSource>
+        {
+            static TaskPool<AssetBundleCreateRequestWithCancellationSource> pool;
+            public AssetBundleCreateRequestWithCancellationSource NextNode { get; set; }
+
+            static AssetBundleCreateRequestWithCancellationSource()
+            {
+                TaskPool.RegisterSizeGetter(typeof(AssetBundleCreateRequestWithCancellationSource), () => pool.Size);
+            }
+
+            readonly Action<AsyncOperation> continuationAction;
+            AssetBundleCreateRequest asyncOperation;
+            CancellationToken cancellationToken;
+            bool completed;
+
+            UniTaskCompletionSourceCore<AssetBundle> core;
+
+            AssetBundleCreateRequestWithCancellationSource()
+            {
+                continuationAction = Continuation;
+            }
+
+            public static IUniTaskSource<AssetBundle> Create(AssetBundleCreateRequest asyncOperation, CancellationToken cancellationToken, out short token)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return AutoResetUniTaskCompletionSource<AssetBundle>.CreateFromCanceled(cancellationToken, out token);
+                }
+
+                if (!pool.TryPop(out var result))
+                {
+                    result = new AssetBundleCreateRequestWithCancellationSource();
+                }
+
+                result.asyncOperation = asyncOperation;
+                result.cancellationToken = cancellationToken;
+                result.completed = false;
+
+                TaskTracker.TrackActiveTask(result, 3);
+
+                PlayerLoopHelper.AddAction(PlayerLoopTiming.Update, result);
+
+                asyncOperation.completed += result.continuationAction;
+
+                token = result.core.Version;
+                return result;
+            }
+
+            void Continuation(AsyncOperation _)
+            {
+                asyncOperation.completed -= continuationAction;
+
+                if (completed)
+                {
+                    TryReturn();
+                }
+                else
+                {
+                    completed = true;
+                    core.TrySetResult(asyncOperation.assetBundle);
+                }
+            }
+
+            public AssetBundle GetResult(short token)
+            {
+                return core.GetResult(token);
+            }
+
+            void IUniTaskSource.GetResult(short token)
+            {
+                GetResult(token);
+            }
+
+            public UniTaskStatus GetStatus(short token)
+            {
+                return core.GetStatus(token);
+            }
+
+            public UniTaskStatus UnsafeGetStatus()
+            {
+                return core.UnsafeGetStatus();
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token)
+            {
+                core.OnCompleted(continuation, state, token);
+            }
+
+            public bool MoveNext()
+            {
+                if (completed)
+                {
+                    TryReturn();
+                    return false;
+                }
+
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    completed = true;
+                    core.TrySetCanceled(cancellationToken);
+                    return false;
+                }
+
+                return true;
+            }
+
+            bool TryReturn()
+            {
+                TaskTracker.RemoveTracking(this);
+                core.Reset();
+                asyncOperation = default;
+                cancellationToken = default;
+                return pool.TryPush(this);
+            }
+
+            ~AssetBundleCreateRequestWithCancellationSource()
+            {
+                if (TryReturn())
+                {
+                    GC.ReRegisterForFinalize(this);
+                }
+            }
+        }
+
+        sealed class AssetBundleCreateRequestConfiguredSource : IUniTaskSource<AssetBundle>, IPlayerLoopItem, ITaskPoolNode<AssetBundleCreateRequestConfiguredSource>
         {
             static TaskPool<AssetBundleCreateRequestConfiguredSource> pool;
             public AssetBundleCreateRequestConfiguredSource NextNode { get; set; }
@@ -731,11 +1222,11 @@ namespace Cysharp.Threading.Tasks
 
             bool TryReturn()
             {
+                TaskTracker.RemoveTracking(this);
                 core.Reset();
                 asyncOperation = default;
                 progress = default;
                 cancellationToken = default;
-                TaskTracker.RemoveTracking(this);
                 return pool.TryPush(this);
             }
 
@@ -763,7 +1254,7 @@ namespace Cysharp.Threading.Tasks
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
             if (asyncOperation.isDone) return UniTask.FromResult(asyncOperation.webRequest);
-            return new UniTask<UnityWebRequest>(UnityWebRequestAsyncOperationConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
+            return new UniTask<UnityWebRequest>(UnityWebRequestAsyncOperationWithCancellationSource.Create(asyncOperation, cancellationToken, out var token), token);
         }
 
         public static UniTask<UnityWebRequest> ToUniTask(this UnityWebRequestAsyncOperation asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
@@ -817,7 +1308,132 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-        class UnityWebRequestAsyncOperationConfiguredSource : IUniTaskSource<UnityWebRequest>, IPlayerLoopItem, ITaskPoolNode<UnityWebRequestAsyncOperationConfiguredSource>
+        sealed class UnityWebRequestAsyncOperationWithCancellationSource : IUniTaskSource<UnityWebRequest>, IPlayerLoopItem, ITaskPoolNode<UnityWebRequestAsyncOperationWithCancellationSource>
+        {
+            static TaskPool<UnityWebRequestAsyncOperationWithCancellationSource> pool;
+            public UnityWebRequestAsyncOperationWithCancellationSource NextNode { get; set; }
+
+            static UnityWebRequestAsyncOperationWithCancellationSource()
+            {
+                TaskPool.RegisterSizeGetter(typeof(UnityWebRequestAsyncOperationWithCancellationSource), () => pool.Size);
+            }
+
+            readonly Action<AsyncOperation> continuationAction;
+            UnityWebRequestAsyncOperation asyncOperation;
+            CancellationToken cancellationToken;
+            bool completed;
+
+            UniTaskCompletionSourceCore<UnityWebRequest> core;
+
+            UnityWebRequestAsyncOperationWithCancellationSource()
+            {
+                continuationAction = Continuation;
+            }
+
+            public static IUniTaskSource<UnityWebRequest> Create(UnityWebRequestAsyncOperation asyncOperation, CancellationToken cancellationToken, out short token)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return AutoResetUniTaskCompletionSource<UnityWebRequest>.CreateFromCanceled(cancellationToken, out token);
+                }
+
+                if (!pool.TryPop(out var result))
+                {
+                    result = new UnityWebRequestAsyncOperationWithCancellationSource();
+                }
+
+                result.asyncOperation = asyncOperation;
+                result.cancellationToken = cancellationToken;
+                result.completed = false;
+
+                TaskTracker.TrackActiveTask(result, 3);
+
+                PlayerLoopHelper.AddAction(PlayerLoopTiming.Update, result);
+
+                asyncOperation.completed += result.continuationAction;
+
+                token = result.core.Version;
+                return result;
+            }
+
+            void Continuation(AsyncOperation _)
+            {
+                asyncOperation.completed -= continuationAction;
+
+                if (completed)
+                {
+                    TryReturn();
+                }
+                else
+                {
+                    completed = true;
+                    core.TrySetResult(asyncOperation.webRequest);
+                }
+            }
+
+            public UnityWebRequest GetResult(short token)
+            {
+                return core.GetResult(token);
+            }
+
+            void IUniTaskSource.GetResult(short token)
+            {
+                GetResult(token);
+            }
+
+            public UniTaskStatus GetStatus(short token)
+            {
+                return core.GetStatus(token);
+            }
+
+            public UniTaskStatus UnsafeGetStatus()
+            {
+                return core.UnsafeGetStatus();
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token)
+            {
+                core.OnCompleted(continuation, state, token);
+            }
+
+            public bool MoveNext()
+            {
+                if (completed)
+                {
+                    TryReturn();
+                    return false;
+                }
+
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    completed = true;
+                    asyncOperation.webRequest.Abort();
+                    core.TrySetCanceled(cancellationToken);
+                    return false;
+                }
+
+                return true;
+            }
+
+            bool TryReturn()
+            {
+                TaskTracker.RemoveTracking(this);
+                core.Reset();
+                asyncOperation = default;
+                cancellationToken = default;
+                return pool.TryPush(this);
+            }
+
+            ~UnityWebRequestAsyncOperationWithCancellationSource()
+            {
+                if (TryReturn())
+                {
+                    GC.ReRegisterForFinalize(this);
+                }
+            }
+        }
+
+        sealed class UnityWebRequestAsyncOperationConfiguredSource : IUniTaskSource<UnityWebRequest>, IPlayerLoopItem, ITaskPoolNode<UnityWebRequestAsyncOperationConfiguredSource>
         {
             static TaskPool<UnityWebRequestAsyncOperationConfiguredSource> pool;
             public UnityWebRequestAsyncOperationConfiguredSource NextNode { get; set; }
@@ -866,7 +1482,6 @@ namespace Cysharp.Threading.Tasks
             {
                 try
                 {
-
                     return core.GetResult(token);
                 }
                 finally
@@ -920,11 +1535,11 @@ namespace Cysharp.Threading.Tasks
 
             bool TryReturn()
             {
+                TaskTracker.RemoveTracking(this);
                 core.Reset();
                 asyncOperation = default;
                 progress = default;
                 cancellationToken = default;
-                TaskTracker.RemoveTracking(this);
                 return pool.TryPush(this);
             }
 

src/UniTask/Assets/Plugins/UniTask/Runtime/UnityAsyncExtensions.tt

@@ -37,7 +37,7 @@ namespace Cysharp.Threading.Tasks
 <# if(t.returnType == "UnityWebRequest") { #>
 #if ENABLE_UNITYWEBREQUEST
 <# } #>
-#region <#= t.typeName #>
+        #region <#= t.typeName #>
 
         public static <#= t.typeName #>Awaiter GetAwaiter(this <#= t.typeName #> asyncOperation)
         {
@@ -45,18 +45,18 @@ namespace Cysharp.Threading.Tasks
             return new <#= t.typeName #>Awaiter(asyncOperation);
         }
 
-        public static <#= ToUniTaskReturnType(t.returnType) #> ToUniTask(this <#= t.typeName #> asyncOperation)
+        public static <#= ToUniTaskReturnType(t.returnType) #> WithCancellation(this <#= t.typeName #> asyncOperation, CancellationToken cancellationToken)
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
-
-            return new <#= ToUniTaskReturnType(t.returnType) #>(<#= t.typeName #>ConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, CancellationToken.None, out var token), token);
+            if (asyncOperation.isDone) return <#= IsVoid(t) ? "UniTask.CompletedTask" : $"UniTask.FromResult(asyncOperation.{t.returnField})" #>;
+            return new <#= ToUniTaskReturnType(t.returnType) #>(<#= t.typeName #>WithCancellationSource.Create(asyncOperation, cancellationToken, out var token), token);
         }
 
-        public static <#= ToUniTaskReturnType(t.returnType) #> ConfigureAwait(this <#= t.typeName #> asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellation = default(CancellationToken))
+        public static <#= ToUniTaskReturnType(t.returnType) #> ToUniTask(this <#= t.typeName #> asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
-
-            return new <#= ToUniTaskReturnType(t.returnType) #>(<#= t.typeName #>ConfiguredSource.Create(asyncOperation, timing, progress, cancellation, out var token), token);
+            if (asyncOperation.isDone) return <#= IsVoid(t) ? "UniTask.CompletedTask" : $"UniTask.FromResult(asyncOperation.{t.returnField})" #>;
+            return new <#= ToUniTaskReturnType(t.returnType) #>(<#= t.typeName #>ConfiguredSource.Create(asyncOperation, timing, progress, cancellationToken, out var token), token);
         }
 
         public struct <#= t.typeName #>Awaiter : ICriticalNotifyCompletion
@@ -106,14 +106,153 @@ namespace Cysharp.Threading.Tasks
             public void UnsafeOnCompleted(Action continuation)
             {
                 Error.ThrowWhenContinuationIsAlreadyRegistered(continuationAction);
-                continuationAction = continuation.AsFuncOfT<AsyncOperation>(); // allocate delegate.
+                continuationAction = PooledDelegate<AsyncOperation>.Create(continuation);
                 asyncOperation.completed += continuationAction;
             }
         }
 
-        class <#= t.typeName #>ConfiguredSource : <#= ToIUniTaskSourceReturnType(t.returnType) #>, IPlayerLoopItem, IPromisePoolItem
+        sealed class <#= t.typeName #>WithCancellationSource : <#= ToIUniTaskSourceReturnType(t.returnType) #>, IPlayerLoopItem, ITaskPoolNode<<#= t.typeName #>WithCancellationSource>
         {
-            static readonly PromisePool<<#= t.typeName #>ConfiguredSource> pool = new PromisePool<<#= t.typeName #>ConfiguredSource>();
+            static TaskPool<<#= t.typeName #>WithCancellationSource> pool;
+            public <#= t.typeName #>WithCancellationSource NextNode { get; set; }
+
+            static <#= t.typeName #>WithCancellationSource()
+            {
+                TaskPool.RegisterSizeGetter(typeof(<#= t.typeName #>WithCancellationSource), () => pool.Size);
+            }
+
+            readonly Action<AsyncOperation> continuationAction;
+            <#= t.typeName #> asyncOperation;
+            CancellationToken cancellationToken;
+            bool completed;
+
+            UniTaskCompletionSourceCore<<#= IsVoid(t) ? "AsyncUnit" : t.returnType #>> core;
+
+            <#= t.typeName #>WithCancellationSource()
+            {
+                continuationAction = Continuation;
+            }
+
+            public static <#= ToIUniTaskSourceReturnType(t.returnType) #> Create(<#= t.typeName #> asyncOperation, CancellationToken cancellationToken, out short token)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return AutoResetUniTaskCompletionSource<#= IsVoid(t) ? "" : $"<{t.returnType}>" #>.CreateFromCanceled(cancellationToken, out token);
+                }
+
+                if (!pool.TryPop(out var result))
+                {
+                    result = new <#= t.typeName #>WithCancellationSource();
+                }
+
+                result.asyncOperation = asyncOperation;
+                result.cancellationToken = cancellationToken;
+                result.completed = false;
+
+                TaskTracker.TrackActiveTask(result, 3);
+
+                PlayerLoopHelper.AddAction(PlayerLoopTiming.Update, result);
+
+                asyncOperation.completed += result.continuationAction;
+
+                token = result.core.Version;
+                return result;
+            }
+
+            void Continuation(AsyncOperation _)
+            {
+                asyncOperation.completed -= continuationAction;
+
+                if (completed)
+                {
+                    TryReturn();
+                }
+                else
+                {
+                    completed = true;
+                    core.TrySetResult(<#= IsVoid(t) ? "AsyncUnit.Default" : $"asyncOperation.{t.returnField}" #>);
+                }
+            }
+
+            public <#= t.returnType #> GetResult(short token)
+            {
+<# if (!IsVoid(t)) { #>
+                return core.GetResult(token);
+<# } else { #>
+                core.GetResult(token);
+<# } #>
+            }
+
+<# if (!IsVoid(t)) { #>
+            void IUniTaskSource.GetResult(short token)
+            {
+                GetResult(token);
+            }
+<# } #>
+
+            public UniTaskStatus GetStatus(short token)
+            {
+                return core.GetStatus(token);
+            }
+
+            public UniTaskStatus UnsafeGetStatus()
+            {
+                return core.UnsafeGetStatus();
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token)
+            {
+                core.OnCompleted(continuation, state, token);
+            }
+
+            public bool MoveNext()
+            {   
+                if (completed)
+                {
+                    TryReturn();
+                    return false;
+                }
+
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    completed = true;
+<# if(t.returnType == "UnityWebRequest") { #>
+                    asyncOperation.webRequest.Abort();
+<# } #>
+                    core.TrySetCanceled(cancellationToken);
+                    return false;
+                }
+
+                return true;
+            }
+
+            bool TryReturn()
+            {
+                TaskTracker.RemoveTracking(this);
+                core.Reset();
+                asyncOperation = default;
+                cancellationToken = default;
+                return pool.TryPush(this);
+            }
+
+            ~<#= t.typeName #>WithCancellationSource()
+            {
+                if (TryReturn())
+                {
+                    GC.ReRegisterForFinalize(this);
+                }
+            }
+        }
+
+        sealed class <#= t.typeName #>ConfiguredSource : <#= ToIUniTaskSourceReturnType(t.returnType) #>, IPlayerLoopItem, ITaskPoolNode<<#= t.typeName #>ConfiguredSource>
+        {
+            static TaskPool<<#= t.typeName #>ConfiguredSource> pool;
+            public <#= t.typeName #>ConfiguredSource NextNode { get; set; }
+
+            static <#= t.typeName #>ConfiguredSource()
+            {
+                TaskPool.RegisterSizeGetter(typeof(<#= t.typeName #>ConfiguredSource), () => pool.Size);
+            }
 
             <#= t.typeName #> asyncOperation;
             IProgress<float> progress;
@@ -133,7 +272,10 @@ namespace Cysharp.Threading.Tasks
                     return AutoResetUniTaskCompletionSource<#= IsVoid(t) ? "" : $"<{t.returnType}>" #>.CreateFromCanceled(cancellationToken, out token);
                 }
 
-                var result = pool.TryRent() ?? new <#= t.typeName #>ConfiguredSource();
+                if (!pool.TryPop(out var result))
+                {
+                    result = new <#= t.typeName #>ConfiguredSource();
+                }
 
                 result.asyncOperation = asyncOperation;
                 result.progress = progress;
@@ -151,8 +293,6 @@ namespace Cysharp.Threading.Tasks
             {
                 try
                 {
-                    TaskTracker.RemoveTracking(this);
-                    
 <# if (!IsVoid(t)) { #>
                     return core.GetResult(token);
 <# } else { #>
@@ -161,7 +301,7 @@ namespace Cysharp.Threading.Tasks
                 }
                 finally
                 {
-                    pool.TryReturn(this);
+                    TryReturn();
                 }
             }
 
@@ -191,6 +331,9 @@ namespace Cysharp.Threading.Tasks
             {
                 if (cancellationToken.IsCancellationRequested)
                 {
+<# if(t.returnType == "UnityWebRequest") { #>
+                    asyncOperation.webRequest.Abort();
+<# } #>
                     core.TrySetCanceled(cancellationToken);
                     return false;
                 }
@@ -209,24 +352,26 @@ namespace Cysharp.Threading.Tasks
                 return true;
             }
 
-            public void Reset()
+            bool TryReturn()
             {
+                TaskTracker.RemoveTracking(this);
                 core.Reset();
                 asyncOperation = default;
                 progress = default;
                 cancellationToken = default;
+                return pool.TryPush(this);
             }
 
             ~<#= t.typeName #>ConfiguredSource()
             {
-                if (pool.TryReturn(this))
+                if (TryReturn())
                 {
                     GC.ReRegisterForFinalize(this);
                 }
             }
         }
 
-# endregion
+        #endregion
 <# if(t.returnType == "UnityWebRequest") { #>
 #endif
 <# } #>

src/UniTask/Assets/Plugins/UniTask/package.json

@@ -1,7 +1,7 @@
 {
     "name": "com.cysharp.unitask",
     "displayName": "UniTask",
-    "version": "2.0.13",
+    "version": "2.0.17",
     "unity": "2018.4",
     "description": "Provides an efficient async/await integration to Unity.",
     "keywords": [ "async/await", "async", "Task", "UniTask" ],

src/UniTask/Assets/Scenes/ExceptionExamples.cs

@@ -21,13 +21,15 @@ public class ExceptionExamples : MonoBehaviour
 
     private void Start()
     {
-        TaskScheduler.UnobservedTaskException += TaskScheduler_UnobservedTaskException;
+        UnityEngine.Debug.Log("ExceptionScene, LoopType:" + PlayerLoopInfo.CurrentLoopType + ":" + Time.frameCount);
 
-        ThrowFromAsyncVoid();
-        _ = ThrowFromTask();
-        _ = ThrowFromUniTask();
+        //TaskScheduler.UnobservedTaskException += TaskScheduler_UnobservedTaskException;
 
-        ThrowFromNonAsync();
+        //ThrowFromAsyncVoid();
+        //_ = ThrowFromTask();
+        //_ = ThrowFromUniTask();
+
+        //ThrowFromNonAsync();
     }
 
     private void TaskScheduler_UnobservedTaskException(object sender, UnobservedTaskExceptionEventArgs e)

src/UniTask/Assets/Scenes/SandboxMain.cs

@@ -14,6 +14,8 @@ using UnityEngine;
 using UnityEngine.LowLevel;
 using UnityEngine.Networking;
 using UnityEngine.UI;
+using UnityEngine.SceneManagement;
+
 
 // using DG.Tweening;
 
@@ -264,11 +266,14 @@ public class SandboxMain : MonoBehaviour
             //var r = UniAsync("https://bing.com/", cts.Token);
             //cts.Cancel();
             //await r;
-            _ = await UnityWebRequest.Get("https://bing.com/").SendWebRequest();
-            Debug.Log("UNIASYNC1 ");
+            Debug.Log("SendWebRequestDone:" + PlayerLoopInfo.CurrentLoopType);
 
-            _ = await UnityWebRequest.Get("https://bing.com/").SendWebRequest();
-            Debug.Log("UNIASYNC2");
+
+            //        var foo = await UnityWebRequest.Get("https://bing.com/").SendWebRequest();
+            //          foo.downloadHandler.text;
+            //
+            _ = await UnityWebRequest.Get("https://bing.com/").SendWebRequest().WithCancellation(CancellationToken.None);
+            Debug.Log("SendWebRequestWithCancellationDone:" + PlayerLoopInfo.CurrentLoopType);
         }
         catch
         {
@@ -301,10 +306,217 @@ public class SandboxMain : MonoBehaviour
         return 10;
     }
 
-
-    async UniTaskVoid Start()
+    async UniTask<int> Ex()
     {
-        await UniTask.SwitchToMainThread();
+        await UniTask.Yield();
+        //throw new Exception();
+        await UniTask.Delay(TimeSpan.FromSeconds(15));
+        return 0;
+    }
+
+    IEnumerator CoroutineRun()
+    {
+        UnityEngine.Debug.Log("Before Coroutine yield return null," + Time.frameCount + ", " + PlayerLoopInfo.CurrentLoopType);
+        yield return null;
+        UnityEngine.Debug.Log("After Coroutine yield return null," + Time.frameCount + ", " + PlayerLoopInfo.CurrentLoopType);
+    }
+
+    IEnumerator CoroutineRun2()
+    {
+        UnityEngine.Debug.Log("Before Coroutine yield return WaitForEndOfFrame," + Time.frameCount);
+        yield return new WaitForEndOfFrame();
+        UnityEngine.Debug.Log("After Coroutine yield return WaitForEndOfFrame," + Time.frameCount + ", " + PlayerLoopInfo.CurrentLoopType);
+        yield return new WaitForEndOfFrame();
+        UnityEngine.Debug.Log("Onemore After Coroutine yield return WaitForEndOfFrame," + Time.frameCount + ", " + PlayerLoopInfo.CurrentLoopType);
+    }
+
+
+    async UniTaskVoid AsyncRun()
+    {
+        UnityEngine.Debug.Log("Before async Yield(default)," + Time.frameCount);
+        await UniTask.Yield();
+        UnityEngine.Debug.Log("After async Yield(default)," + Time.frameCount + ", " + PlayerLoopInfo.CurrentLoopType);
+    }
+
+    async UniTaskVoid AsyncLastUpdate()
+    {
+        UnityEngine.Debug.Log("Before async Yield(LastUpdate)," + Time.frameCount);
+        await UniTask.Yield(PlayerLoopTiming.LastUpdate);
+        UnityEngine.Debug.Log("After async Yield(LastUpdate)," + Time.frameCount);
+    }
+
+    async UniTaskVoid AsyncLastLast()
+    {
+        UnityEngine.Debug.Log("Before async Yield(LastPostLateUpdate)," + Time.frameCount);
+        await UniTask.Yield(PlayerLoopTiming.LastPostLateUpdate);
+        UnityEngine.Debug.Log("After async Yield(LastPostLateUpdate)," + Time.frameCount);
+    }
+
+    async UniTaskVoid Yieldding()
+    {
+        await UniTask.Yield(PlayerLoopTiming.PreUpdate);
+        StartCoroutine(CoroutineRun());
+    }
+
+    async UniTaskVoid AsyncFixedUpdate()
+    {
+        while (true)
+        {
+            await UniTask.WaitForFixedUpdate();
+            Debug.Log("Async:" + Time.frameCount + ", " + PlayerLoopInfo.CurrentLoopType);
+        }
+    }
+
+    IEnumerator CoroutineFixedUpdate()
+    {
+        while (true)
+        {
+            yield return new WaitForFixedUpdate();
+            Debug.Log("Coroutine:" + Time.frameCount + ", " + PlayerLoopInfo.CurrentLoopType);
+        }
+    }
+
+    private void FixedUpdate()
+    {
+        // Debug.Log("FixedUpdate:" + Time.frameCount + ", " + PlayerLoopInfo.CurrentLoopType);
+    }
+
+    async UniTaskVoid DelayFrame3_Pre()
+    {
+        await UniTask.Yield(PlayerLoopTiming.PreUpdate);
+        Debug.Log("Before framecount:" + Time.frameCount);
+        await UniTask.DelayFrame(3);
+        Debug.Log("After framecount:" + Time.frameCount);
+    }
+
+    async UniTaskVoid DelayFrame3_Post()
+    {
+        await UniTask.Yield(PlayerLoopTiming.PostLateUpdate);
+        Debug.Log("Before framecount:" + Time.frameCount);
+        await UniTask.DelayFrame(3);
+        Debug.Log("After framecount:" + Time.frameCount);
+    }
+
+    async UniTask TestCoroutine()
+    {
+        await UniTask.Yield();
+        throw new Exception("foobarbaz");
+    }
+
+    async UniTask DelayCheck()
+    {
+        await UniTask.Yield(PlayerLoopTiming.PreUpdate);
+        Debug.Log("before");
+        var t = UniTask.Delay(TimeSpan.FromSeconds(1), ignoreTimeScale: false);
+
+        await t;
+        Debug.Log("after");
+    }
+
+    private async UniTaskVoid ExecuteAsync()
+    {
+        Debug.Log("1");
+        {
+            var xs = await UniTaskAsyncEnumerable.TimerFrame(1).ToArrayAsync();
+        }
+        Debug.Log("------------------");
+        {
+            var xs = await UniTaskAsyncEnumerable.TimerFrame(1).ToArrayAsync();
+            Debug.Log("2");
+        }
+    }
+
+
+    void Start()
+    {
+        UnityEngine.Debug.Log("Start:" + PlayerLoopInfo.CurrentLoopType);
+
+        //PlayerLoopInfo.Inject();
+
+        //_ = AsyncFixedUpdate();
+        //StartCoroutine(CoroutineFixedUpdate());
+
+        //StartCoroutine(TestCoroutine().ToCoroutine());
+
+        // Application.logMessageReceived += Application_logMessageReceived;
+
+        // var rp = new AsyncReactiveProperty<int>();
+
+
+        // rp.AddTo(this.GetCancellationTokenOnDestroy());
+        var cts = new CancellationTokenSource();
+
+        
+
+
+
+        okButton.onClick.AddListener(UniTask.UnityAction(async () =>
+        {
+            _ = ExecuteAsync();
+
+            await UniTask.Yield();
+
+            //await DelayCheck();
+            /*
+            UnityEngine.Debug.Log("click:" + PlayerLoopInfo.CurrentLoopType);
+            StartCoroutine(CoroutineRun());
+            StartCoroutine(CoroutineRun2());
+            _ = AsyncRun();
+            _ = AsyncLastUpdate();
+            _ = AsyncLastLast();
+            */
+            //await UniTask.Yield();
+            //_ = Test2();
+            // EarlyUpdate.ExecuteMainThreadJobs
+            // _ = Test2();
+
+            //var t = await Resources.LoadAsync<TextAsset>(Application.streamingAssetsPath + "test.txt");
+            //Debug.Log("LoadEnd" + PlayerLoopInfo.CurrentLoopType + ", " + (t != null));
+            //Debug.Log("LoadEnd" + PlayerLoopInfo.CurrentLoopType + ", " + ((TextAsset)t).text);
+
+
+            //await UniTask.Yield(PlayerLoopTiming.LastUpdate);
+            //UnityEngine.Debug.Log("after update:" + Time.frameCount);
+            ////await UniTask.NextFrame();
+            ////await UniTask.Yield();
+            ////UnityEngine.Debug.Log("after update nextframe:" + Time.frameCount);
+
+            //StartCoroutine(CoroutineRun2());
+            ////StartCoroutine(CoroutineRun());
+            //UnityEngine.Debug.Log("FOO?");
+
+            //_ = DelayFrame3_Pre();
+            //await UniTask.Yield();
+
+        }));
+
+        cancelButton.onClick.AddListener(UniTask.UnityAction(async () =>
+        {
+            _ = DelayFrame3_Post();
+            await UniTask.Yield();
+
+            //await UniTask.Yield(PlayerLoopTiming.LastPreUpdate);
+            //UnityEngine.Debug.Log("before update:" + Time.frameCount);
+            //await UniTask.NextFrame();
+            //await UniTask.Yield();
+            //UnityEngine.Debug.Log("before update nextframe:" + Time.frameCount);
+
+            //StartCoroutine(CoroutineRun());
+
+            //UnityEngine.Debug.Log("click:" + PlayerLoopInfo.CurrentLoopType);
+            //_ = Yieldding();
+
+            //var cts = new CancellationTokenSource();
+
+            //UnityEngine.Debug.Log("click:" + PlayerLoopInfo.CurrentLoopType + ":" + Time.frameCount);
+            //var la = SceneManager.LoadSceneAsync("Scenes/ExceptionExamples").WithCancellation(cts.Token);
+            ////cts.Cancel();
+            //await la;
+            //UnityEngine.Debug.Log("End LoadSceneAsync" + PlayerLoopInfo.CurrentLoopType + ":" + Time.frameCount);
+        }));
+
+        //return;
+        //await UniTask.SwitchToMainThread();
 
         //UniTaskAsyncEnumerable.EveryValueChanged(mcc, x => x.MyProperty)
         //    .Do(_ => { }, () => Debug.Log("COMPLETED"))
@@ -315,10 +527,29 @@ public class SandboxMain : MonoBehaviour
         //    .Forget();
 
         //_ = Test1();
-        Test2().Forget();
+        //Test2().Forget();
         //StartCoroutine(Test3("https://bing.com/"));
 
 
+
+
+
+        //bool flip = false;
+        //var rect = cancelButton.GetComponent<RectTransform>();
+        //var cts = new CancellationTokenSource();
+        //var ct = cts.Token;
+        //okButton.onClick.AddListener(UniTask.UnityAction(async () =>
+        //{
+        //    await rect.DOMoveX(10f * (flip ? -1 : 1), 3).OnUpdate(() => { Debug.Log("UPDATE YEAH"); }).WithCancellation(ct);
+        //    flip = !flip;
+        //    // ok.
+        //}));
+        //cancelButton.onClick.AddListener(() =>
+        //{
+        //    cts.Cancel();
+        //});
+
+
         // DG.Tweening.Core.TweenerCore<int>
         //Debug.Log("GO MOVEX");
         //await okButton.GetComponent<RectTransform>().DOMoveX(-10.2f, 3).WithCancellation(CancellationToken.None);
@@ -329,7 +560,7 @@ public class SandboxMain : MonoBehaviour
         //await okButton.GetComponent<RectTransform>().DOMoveY(10.2f, 3).WithCancellation(CancellationToken.None);
         //Debug.Log("AGAIN END MOVE");
 
-        Debug.Log(Test().GetType().FullName);
+        //Debug.Log(Test().GetType().FullName);
 
 
 
@@ -383,11 +614,10 @@ public class SandboxMain : MonoBehaviour
         //{
 
 
-        okButton.onClick.AddListener(UniTask.UnityAction(async () =>
-        {
-            await UniTask.Yield();
-            Debug.Log("Yeha");
-        }));
+        //foreach (var (type, size) in TaskPool.GetCacheSizeInfo())
+        //{
+        //    Debug.Log(type + ":" + size);
+        //}
 
 
         //}).Forget();
@@ -396,7 +626,7 @@ public class SandboxMain : MonoBehaviour
 
         //okButton.onClick.AddListener(UniTask.UnityAction(async () => await UniTask.Yield()));
 
-        PlayerLoopInfo.Inject();
+
 
         //UpdateUniTask().Forget();
 
@@ -405,15 +635,21 @@ public class SandboxMain : MonoBehaviour
         //await UniTask.Delay(TimeSpan.FromSeconds(1));
 
 
-        _ = ReturnToMainThreadTest();
+        // _ = ReturnToMainThreadTest();
 
         //GameObject.Destroy(this.gameObject);
 
 
-        SynchronizationContext.Current.Post(_ =>
-        {
-            //UnityEngine.Debug.Log("Post:" + PlayerLoopInfo.CurrentLoopType);
-        }, null);
+    }
+
+    private void Application_logMessageReceived2(string condition, string stackTrace, LogType type)
+    {
+        throw new NotImplementedException();
+    }
+
+    private void Application_logMessageReceived1(string condition, string stackTrace, LogType type)
+    {
+        throw new NotImplementedException();
     }
 
     async UniTaskVoid UpdateUniTask()
@@ -740,6 +976,7 @@ public class PlayerLoopInfo
 
     public static Type CurrentLoopType { get; private set; }
 
+    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
     public static void Inject()
     {
         var system = PlayerLoop.GetCurrentPlayerLoop();

src/UniTask/Assets/Tests/AsyncTest.cs

@@ -126,15 +126,15 @@ namespace Cysharp.Threading.TasksTests
             await ToaruCoroutineEnumerator(); // wait 5 frame:)
         });
 
-        [UnityTest]
-        public IEnumerator JobSystem() => UniTask.ToCoroutine(async () =>
-        {
-            var job = new MyJob() { loopCount = 999, inOut = new NativeArray<int>(1, Allocator.TempJob) };
-            JobHandle.ScheduleBatchedJobs();
-            await job.Schedule();
-            job.inOut[0].Should().Be(999);
-            job.inOut.Dispose();
-        });
+        //[UnityTest]
+        //public IEnumerator JobSystem() => UniTask.ToCoroutine(async () =>
+        //{
+        //    var job = new MyJob() { loopCount = 999, inOut = new NativeArray<int>(1, Allocator.TempJob) };
+        //    JobHandle.ScheduleBatchedJobs();
+        //    await job.Schedule();
+        //    job.inOut[0].Should().Be(999);
+        //    job.inOut.Dispose();
+        //});
 
         class MyMyClass
         {
@@ -197,7 +197,7 @@ namespace Cysharp.Threading.TasksTests
             //await UniTask.SwitchToThreadPool();
 
 
-            
+
 
 
 
@@ -269,7 +269,8 @@ namespace Cysharp.Threading.TasksTests
             var first = Time.frameCount;
             var canceled = await UniTask.DelayFrame(100, cancellationToken: cts.Token).SuppressCancellationThrow();
 
-            (Time.frameCount - first).Should().Be(11); // 10 frame canceled
+            var r = (Time.frameCount - first);
+            (9 < r && r < 11).Should().BeTrue();
             canceled.Should().Be(true);
         });
 
@@ -369,6 +370,24 @@ namespace Cysharp.Threading.TasksTests
             throw new Exception("MyException");
         }
 
+        [UnityTest]
+        public IEnumerator NextFrame1() => UniTask.ToCoroutine(async () =>
+        {
+            await UniTask.Yield(PlayerLoopTiming.LastUpdate);
+            var frame = Time.frameCount;
+            await UniTask.NextFrame();
+            Time.frameCount.Should().Be(frame + 1);
+        });
+
+        [UnityTest]
+        public IEnumerator NextFrame2() => UniTask.ToCoroutine(async () =>
+        {
+            await UniTask.Yield(PlayerLoopTiming.PreUpdate);
+            var frame = Time.frameCount;
+            await UniTask.NextFrame();
+            Time.frameCount.Should().Be(frame + 1);
+        });
+
         [UnityTest]
         public IEnumerator NestedEnumerator() => UniTask.ToCoroutine(async () =>
         {
@@ -424,6 +443,7 @@ namespace Cysharp.Threading.TasksTests
             public void OnError(Exception error) => OnErrorCalled = true;
         }
 
+
 #endif
 #endif
     }

src/UniTask/Assets/Tests/CachelikeTest.cs

@@ -0,0 +1,96 @@
+using Cysharp.Threading.Tasks;
+using Cysharp.Threading.Tasks.Linq;
+using FluentAssertions;
+using NUnit.Framework;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UnityEngine;
+using UnityEngine.TestTools;
+
+namespace Cysharp.Threading.TasksTests
+{
+    public class Cachelike
+    {
+        [UnityTest]
+        public IEnumerator Check() => UniTask.ToCoroutine(async () =>
+        {
+            {
+                var v = await CachedCheck("foo", 10);
+                v.Should().Be(10);
+
+                var v2 = await CachedCheck("bar", 20);
+                v2.Should().Be(20);
+
+                var v3 = await CachedCheck("baz", 30);
+                v3.Should().Be(30);
+            }
+            {
+                var v = await CachedCheck("foo", 10);
+                v.Should().Be(10);
+
+                var v2 = await CachedCheck("bar", 20);
+                v2.Should().Be(20);
+
+                var v3 = await CachedCheck("baz", 30);
+                v3.Should().Be(30);
+            }
+            {
+                var v = CachedCheck("foo", 10);
+                var v2 = CachedCheck("bar", 20);
+                var v3 = CachedCheck("baz", 30);
+
+                (await v).Should().Be(10);
+                (await v2).Should().Be(20);
+                (await v3).Should().Be(30);
+            }
+            {
+                var v = CachedCheck("foo", 10, true);
+                var v2 = CachedCheck("bar", 20, true);
+                var v3 = CachedCheck("baz", 30, true);
+
+                (await v).Should().Be(10);
+                (await v2).Should().Be(20);
+                (await v3).Should().Be(30);
+            }
+        });
+
+
+        static Dictionary<string, int> cacheDict = new Dictionary<string, int>();
+
+        async UniTask<int> CachedCheck(string cache, int value, bool yield = false)
+        {
+            if (!cacheDict.ContainsKey(cache))
+            {
+                await UniTask.Yield();
+            }
+
+            if (yield)
+            {
+                await UniTask.Yield();
+            }
+
+            if (cacheDict.TryGetValue(cache, out var v))
+            {
+                return v;
+            }
+
+            cacheDict.Add(cache, value);
+
+            return value;
+        }
+
+     
+    }
+
+
+
+
+
+
+
+
+}

src/UniTask/Assets/Tests/CachelikeTest.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 416e0e77b4408b0498792eb218ed2870
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

src/UniTask/Assets/Tests/DelayTest.cs

@@ -0,0 +1,185 @@
+using Cysharp.Threading.Tasks;
+using Cysharp.Threading.Tasks.Linq;
+using FluentAssertions;
+using NUnit.Framework;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using UnityEngine;
+using UnityEngine.TestTools;
+
+namespace Cysharp.Threading.TasksTests
+{
+    public class DelayTest
+    {
+        [UnityTest]
+        public IEnumerator DelayFrame() => UniTask.ToCoroutine(async () =>
+        {
+            for (int i = 1; i < 5; i++)
+            {
+                await UniTask.Yield(PlayerLoopTiming.PreUpdate);
+                var frameCount = Time.frameCount;
+                await UniTask.DelayFrame(i);
+                Time.frameCount.Should().Be(frameCount + i);
+            }
+
+            for (int i = 1; i < 5; i++)
+            {
+                await UniTask.Yield(PlayerLoopTiming.PostLateUpdate);
+                var frameCount = Time.frameCount;
+                await UniTask.DelayFrame(i);
+                Time.frameCount.Should().Be(frameCount + i);
+            }
+        });
+
+        [UnityTest]
+        public IEnumerator DelayFrameZero() => UniTask.ToCoroutine(async () =>
+        {
+            {
+                await UniTask.Yield(PlayerLoopTiming.PreUpdate);
+                var frameCount = Time.frameCount;
+                await UniTask.DelayFrame(0);
+                Time.frameCount.Should().Be(frameCount); // same frame
+            }
+            {
+                await UniTask.Yield(PlayerLoopTiming.PostLateUpdate);
+                var frameCount = Time.frameCount;
+                await UniTask.DelayFrame(0);
+                Time.frameCount.Should().Be(frameCount + 1); // next frame
+            }
+        });
+
+
+
+        [UnityTest]
+        public IEnumerator TimerFramePre() => UniTask.ToCoroutine(async () =>
+        {
+            await UniTask.Yield(PlayerLoopTiming.PreUpdate);
+
+            var initialFrame = Time.frameCount;
+            var xs = await UniTaskAsyncEnumerable.TimerFrame(2, 3).Take(5).Select(_ => Time.frameCount).ToArrayAsync();
+
+            xs[0].Should().Be(initialFrame + 2);
+            xs[1].Should().Be(initialFrame + 2 + (3 * 1));
+            xs[2].Should().Be(initialFrame + 2 + (3 * 2));
+            xs[3].Should().Be(initialFrame + 2 + (3 * 3));
+            xs[4].Should().Be(initialFrame + 2 + (3 * 4));
+        });
+
+
+        [UnityTest]
+        public IEnumerator TimerFramePost() => UniTask.ToCoroutine(async () =>
+        {
+            await UniTask.Yield(PlayerLoopTiming.PostLateUpdate);
+
+            var initialFrame = Time.frameCount;
+            var xs = await UniTaskAsyncEnumerable.TimerFrame(2, 3).Take(5).Select(_ => Time.frameCount).ToArrayAsync();
+
+            xs[0].Should().Be(initialFrame + 2);
+            xs[1].Should().Be(initialFrame + 2 + (3 * 1));
+            xs[2].Should().Be(initialFrame + 2 + (3 * 2));
+            xs[3].Should().Be(initialFrame + 2 + (3 * 3));
+            xs[4].Should().Be(initialFrame + 2 + (3 * 4));
+        });
+
+
+        [UnityTest]
+        public IEnumerator TimerFrameTest() => UniTask.ToCoroutine(async () =>
+        {
+            await UniTask.Yield(PlayerLoopTiming.PreUpdate);
+
+            var initialFrame = Time.frameCount;
+            var xs = await UniTaskAsyncEnumerable.TimerFrame(0, 0).Take(5).Select(_ => Time.frameCount).ToArrayAsync();
+
+            xs[0].Should().Be(initialFrame);
+            xs[1].Should().Be(initialFrame + 1);
+            xs[2].Should().Be(initialFrame + 2);
+            xs[3].Should().Be(initialFrame + 3);
+            xs[4].Should().Be(initialFrame + 4);
+        });
+
+
+        [UnityTest]
+        public IEnumerator TimerFrameSinglePre() => UniTask.ToCoroutine(async () =>
+        {
+            {
+                await UniTask.Yield(PlayerLoopTiming.PreUpdate);
+                var initialFrame = Time.frameCount;
+                var xs = await UniTaskAsyncEnumerable.TimerFrame(0).Select(_ => Time.frameCount).ToArrayAsync();
+                xs[0].Should().Be(initialFrame);
+
+            }
+            {
+                await UniTask.Yield(PlayerLoopTiming.PreUpdate);
+                var initialFrame = Time.frameCount;
+
+                var xs = await UniTaskAsyncEnumerable.TimerFrame(1).Select(_ =>
+                {
+                    var t = Time.frameCount;
+
+                    return t;
+                }).ToArrayAsync();
+
+                xs[0].Should().Be(initialFrame + 1);
+            }
+            {
+                await UniTask.Yield(PlayerLoopTiming.PreUpdate);
+                var initialFrame = Time.frameCount;
+                var xs = await UniTaskAsyncEnumerable.TimerFrame(2).Select(_ => Time.frameCount).ToArrayAsync();
+                xs[0].Should().Be(initialFrame + 2);
+            }
+        });
+
+
+        [UnityTest]
+        public IEnumerator TimerFrameSinglePost() => UniTask.ToCoroutine(async () =>
+        {
+            {
+                //await UniTask.Yield(PlayerLoopTiming.PostLateUpdate);
+                //var initialFrame = Time.frameCount;
+                //var xs = await UniTaskAsyncEnumerable.TimerFrame(0).Select(_ => Time.frameCount).ToArrayAsync();
+                //xs[0].Should().Be(initialFrame);
+            }
+            {
+                //await UniTask.Yield(PlayerLoopTiming.PostLateUpdate);
+                var initialFrame = Time.frameCount;
+                var xs = await UniTaskAsyncEnumerable.TimerFrame(1).Select(_ => Time.frameCount).ToArrayAsync();
+                xs[0].Should().Be(initialFrame + 1);
+            }
+            {
+                //await UniTask.Yield(PlayerLoopTiming.PostLateUpdate);
+                var initialFrame = Time.frameCount;
+                var xs = await UniTaskAsyncEnumerable.TimerFrame(2).Select(_ => Time.frameCount).ToArrayAsync();
+                xs[0].Should().Be(initialFrame + 2);
+            }
+        });
+
+
+
+        [UnityTest]
+        public IEnumerator Timer() => UniTask.ToCoroutine(async () =>
+        {
+            await UniTask.Yield(PlayerLoopTiming.PreUpdate);
+
+            {
+                var initialSeconds = Time.realtimeSinceStartup;
+                var xs = await UniTaskAsyncEnumerable.Timer(TimeSpan.FromSeconds(2)).Select(_ => Time.realtimeSinceStartup).ToArrayAsync();
+
+                Mathf.Approximately(initialSeconds, xs[0]).Should().BeFalse();
+                Debug.Log("Init:" + initialSeconds);
+                Debug.Log("After:" + xs[0]);
+            }
+        });
+
+
+
+
+    }
+
+
+
+}

src/UniTask/Assets/Tests/DelayTest.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 1376b93d9e1083a4a9b4081e08f3a7b7
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

src/UniTask/Assets/Tests/Editor/AsyncTestEditor.cs

@@ -1,400 +1,400 @@
-#if !(UNITY_4_5 || UNITY_4_6 || UNITY_4_7 || UNITY_5_0 || UNITY_5_1 || UNITY_5_2)
-#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
+//#if !(UNITY_4_5 || UNITY_4_6 || UNITY_4_7 || UNITY_5_0 || UNITY_5_1 || UNITY_5_2)
+//#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
 
-using UnityEngine;
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using UnityEngine.UI;
-using UnityEngine.Scripting;
-using Cysharp.Threading.Tasks;
-using UnityEngine.SceneManagement;
-#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
-using System.Threading.Tasks;
-#endif
-using UnityEngine.Networking;
+//using UnityEngine;
+//using System;
+//using System.Collections;
+//using System.Collections.Generic;
+//using System.Linq;
+//using System.Text;
+//using UnityEngine.UI;
+//using UnityEngine.Scripting;
+//using Cysharp.Threading.Tasks;
+//using UnityEngine.SceneManagement;
+//#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
+//using System.Threading.Tasks;
+//#endif
+//using UnityEngine.Networking;
 
-#if !UNITY_2019_3_OR_NEWER
-using UnityEngine.Experimental.LowLevel;
-#else
-using UnityEngine.LowLevel;
-#endif
+//#if !UNITY_2019_3_OR_NEWER
+//using UnityEngine.Experimental.LowLevel;
+//#else
+//using UnityEngine.LowLevel;
+//#endif
 
-#if !UNITY_WSA
-using Unity.Jobs;
-#endif
-using Unity.Collections;
-using System.Threading;
-using NUnit.Framework;
-using UnityEngine.TestTools;
-using FluentAssertions;
+//#if !UNITY_WSA
+//using Unity.Jobs;
+//#endif
+//using Unity.Collections;
+//using System.Threading;
+//using NUnit.Framework;
+//using UnityEngine.TestTools;
+//using FluentAssertions;
 
-namespace Cysharp.Threading.TasksTests
-{
-    public class AsyncTest
-    {
-#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
-#if !UNITY_WSA
+//namespace Cysharp.Threading.TasksTests
+//{
+//    public class AsyncTest
+//    {
+//#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
+//#if !UNITY_WSA
 
-        public struct MyJob : IJob
-        {
-            public int loopCount;
-            public NativeArray<int> inOut;
-            public int result;
+//        public struct MyJob : IJob
+//        {
+//            public int loopCount;
+//            public NativeArray<int> inOut;
+//            public int result;
 
-            public void Execute()
-            {
-                result = 0;
-                for (int i = 0; i < loopCount; i++)
-                {
-                    result++;
-                }
-                inOut[0] = result;
-            }
-        }
+//            public void Execute()
+//            {
+//                result = 0;
+//                for (int i = 0; i < loopCount; i++)
+//                {
+//                    result++;
+//                }
+//                inOut[0] = result;
+//            }
+//        }
 
-        [UnityTest]
-        public IEnumerator DelayAnd() => UniTask.ToCoroutine(async () =>
-        {
-            await UniTask.Yield(PlayerLoopTiming.PostLateUpdate);
+//        [UnityTest]
+//        public IEnumerator DelayAnd() => UniTask.ToCoroutine(async () =>
+//        {
+//            await UniTask.Yield(PlayerLoopTiming.PostLateUpdate);
 
-            var time = Time.realtimeSinceStartup;
+//            var time = Time.realtimeSinceStartup;
 
-            Time.timeScale = 0.5f;
-            try
-            {
-                await UniTask.Delay(TimeSpan.FromSeconds(3));
+//            Time.timeScale = 0.5f;
+//            try
+//            {
+//                await UniTask.Delay(TimeSpan.FromSeconds(3));
 
-                var elapsed = Time.realtimeSinceStartup - time;
-                ((int)Math.Round(TimeSpan.FromSeconds(elapsed).TotalSeconds, MidpointRounding.ToEven)).Should().Be(6);
-            }
-            finally
-            {
-                Time.timeScale = 1.0f;
-            }
-        });
+//                var elapsed = Time.realtimeSinceStartup - time;
+//                ((int)Math.Round(TimeSpan.FromSeconds(elapsed).TotalSeconds, MidpointRounding.ToEven)).Should().Be(6);
+//            }
+//            finally
+//            {
+//                Time.timeScale = 1.0f;
+//            }
+//        });
 
-        [UnityTest]
-        public IEnumerator DelayIgnore() => UniTask.ToCoroutine(async () =>
-        {
-            var time = Time.realtimeSinceStartup;
+//        [UnityTest]
+//        public IEnumerator DelayIgnore() => UniTask.ToCoroutine(async () =>
+//        {
+//            var time = Time.realtimeSinceStartup;
 
-            Time.timeScale = 0.5f;
-            try
-            {
-                await UniTask.Delay(TimeSpan.FromSeconds(3), ignoreTimeScale: true);
+//            Time.timeScale = 0.5f;
+//            try
+//            {
+//                await UniTask.Delay(TimeSpan.FromSeconds(3), ignoreTimeScale: true);
 
-                var elapsed = Time.realtimeSinceStartup - time;
-                ((int)Math.Round(TimeSpan.FromSeconds(elapsed).TotalSeconds, MidpointRounding.ToEven)).Should().Be(3);
-            }
-            finally
-            {
-                Time.timeScale = 1.0f;
-            }
-        });
+//                var elapsed = Time.realtimeSinceStartup - time;
+//                ((int)Math.Round(TimeSpan.FromSeconds(elapsed).TotalSeconds, MidpointRounding.ToEven)).Should().Be(3);
+//            }
+//            finally
+//            {
+//                Time.timeScale = 1.0f;
+//            }
+//        });
 
-        [UnityTest]
-        public IEnumerator WhenAll() => UniTask.ToCoroutine(async () =>
-        {
-            var a = UniTask.FromResult(999);
-            var b = UniTask.Yield(PlayerLoopTiming.Update, CancellationToken.None).AsAsyncUnitUniTask();
-            var c = UniTask.DelayFrame(99).AsAsyncUnitUniTask();
+//        [UnityTest]
+//        public IEnumerator WhenAll() => UniTask.ToCoroutine(async () =>
+//        {
+//            var a = UniTask.FromResult(999);
+//            var b = UniTask.Yield(PlayerLoopTiming.Update, CancellationToken.None).AsAsyncUnitUniTask();
+//            var c = UniTask.DelayFrame(99).AsAsyncUnitUniTask();
 
-            var (a2, b2, c2) = await UniTask.WhenAll(a, b, c);
-            a2.Should().Be(999);
-            b2.Should().Be(AsyncUnit.Default);
-            c2.Should().Be(AsyncUnit.Default);
-        });
+//            var (a2, b2, c2) = await UniTask.WhenAll(a, b, c);
+//            a2.Should().Be(999);
+//            b2.Should().Be(AsyncUnit.Default);
+//            c2.Should().Be(AsyncUnit.Default);
+//        });
 
-        [UnityTest]
-        public IEnumerator WhenAny() => UniTask.ToCoroutine(async () =>
-        {
-            var a = UniTask.FromResult(999);
-            var b = UniTask.Yield(PlayerLoopTiming.Update, CancellationToken.None).AsAsyncUnitUniTask();
-            var c = UniTask.DelayFrame(99).AsAsyncUnitUniTask();
+//        [UnityTest]
+//        public IEnumerator WhenAny() => UniTask.ToCoroutine(async () =>
+//        {
+//            var a = UniTask.FromResult(999);
+//            var b = UniTask.Yield(PlayerLoopTiming.Update, CancellationToken.None).AsAsyncUnitUniTask();
+//            var c = UniTask.DelayFrame(99).AsAsyncUnitUniTask();
 
-            var (win, a2, b2, c2) = await UniTask.WhenAny(a, b, c);
-            win.Should().Be(0);
-            a2.Should().Be(999);
-        });
+//            var (win, a2, b2, c2) = await UniTask.WhenAny(a, b, c);
+//            win.Should().Be(0);
+//            a2.Should().Be(999);
+//        });
 
-        [UnityTest]
-        public IEnumerator BothEnumeratorCheck() => UniTask.ToCoroutine(async () =>
-        {
-            await ToaruCoroutineEnumerator(); // wait 5 frame:)
-        });
+//        [UnityTest]
+//        public IEnumerator BothEnumeratorCheck() => UniTask.ToCoroutine(async () =>
+//        {
+//            await ToaruCoroutineEnumerator(); // wait 5 frame:)
+//        });
 
-        [UnityTest]
-        public IEnumerator JobSystem() => UniTask.ToCoroutine(async () =>
-        {
-            var job = new MyJob() { loopCount = 999, inOut = new NativeArray<int>(1, Allocator.TempJob) };
-            JobHandle.ScheduleBatchedJobs();
-            await job.Schedule();
-            job.inOut[0].Should().Be(999);
-            job.inOut.Dispose();
-        });
+//        [UnityTest]
+//        public IEnumerator JobSystem() => UniTask.ToCoroutine(async () =>
+//        {
+//            var job = new MyJob() { loopCount = 999, inOut = new NativeArray<int>(1, Allocator.TempJob) };
+//            JobHandle.ScheduleBatchedJobs();
+//            await job.Schedule();
+//            job.inOut[0].Should().Be(999);
+//            job.inOut.Dispose();
+//        });
 
-        class MyMyClass
-        {
-            public int MyProperty { get; set; }
-        }
+//        class MyMyClass
+//        {
+//            public int MyProperty { get; set; }
+//        }
 
-        [UnityTest]
-        public IEnumerator WaitUntil() => UniTask.ToCoroutine(async () =>
-        {
-            bool t = false;
+//        [UnityTest]
+//        public IEnumerator WaitUntil() => UniTask.ToCoroutine(async () =>
+//        {
+//            bool t = false;
 
-            await UniTask.Yield(PlayerLoopTiming.PostLateUpdate);
+//            await UniTask.Yield(PlayerLoopTiming.PostLateUpdate);
 
-            UniTask.DelayFrame(10,PlayerLoopTiming.PostLateUpdate).ContinueWith(() => t = true).Forget();
+//            UniTask.DelayFrame(10,PlayerLoopTiming.PostLateUpdate).ContinueWith(() => t = true).Forget();
 
-            var startFrame = Time.frameCount;
-            await UniTask.WaitUntil(() => t, PlayerLoopTiming.EarlyUpdate);
+//            var startFrame = Time.frameCount;
+//            await UniTask.WaitUntil(() => t, PlayerLoopTiming.EarlyUpdate);
 
-            var diff = Time.frameCount - startFrame;
-            diff.Should().Be(11);
-        });
+//            var diff = Time.frameCount - startFrame;
+//            diff.Should().Be(11);
+//        });
 
-        [UnityTest]
-        public IEnumerator WaitWhile() => UniTask.ToCoroutine(async () =>
-        {
-            bool t = true;
+//        [UnityTest]
+//        public IEnumerator WaitWhile() => UniTask.ToCoroutine(async () =>
+//        {
+//            bool t = true;
 
-            UniTask.DelayFrame(10, PlayerLoopTiming.PostLateUpdate).ContinueWith(() => t = false).Forget();
+//            UniTask.DelayFrame(10, PlayerLoopTiming.PostLateUpdate).ContinueWith(() => t = false).Forget();
 
-            var startFrame = Time.frameCount;
-            await UniTask.WaitWhile(() => t, PlayerLoopTiming.EarlyUpdate);
+//            var startFrame = Time.frameCount;
+//            await UniTask.WaitWhile(() => t, PlayerLoopTiming.EarlyUpdate);
 
-            var diff = Time.frameCount - startFrame;
-            diff.Should().Be(11);
-        });
+//            var diff = Time.frameCount - startFrame;
+//            diff.Should().Be(11);
+//        });
 
-        [UnityTest]
-        public IEnumerator WaitUntilValueChanged() => UniTask.ToCoroutine(async () =>
-        {
-            var v = new MyMyClass { MyProperty = 99 };
+//        [UnityTest]
+//        public IEnumerator WaitUntilValueChanged() => UniTask.ToCoroutine(async () =>
+//        {
+//            var v = new MyMyClass { MyProperty = 99 };
 
-            UniTask.DelayFrame(10, PlayerLoopTiming.PostLateUpdate).ContinueWith(() => v.MyProperty = 1000).Forget();
+//            UniTask.DelayFrame(10, PlayerLoopTiming.PostLateUpdate).ContinueWith(() => v.MyProperty = 1000).Forget();
 
-            var startFrame = Time.frameCount;
-            await UniTask.WaitUntilValueChanged(v, x => x.MyProperty, PlayerLoopTiming.EarlyUpdate);
+//            var startFrame = Time.frameCount;
+//            await UniTask.WaitUntilValueChanged(v, x => x.MyProperty, PlayerLoopTiming.EarlyUpdate);
 
-            var diff = Time.frameCount - startFrame;
-            diff.Should().Be(11);
-        });
+//            var diff = Time.frameCount - startFrame;
+//            diff.Should().Be(11);
+//        });
 
-        [UnityTest]
-        public IEnumerator SwitchTo() => UniTask.ToCoroutine(async () =>
-        {
-            await UniTask.Yield();
+//        [UnityTest]
+//        public IEnumerator SwitchTo() => UniTask.ToCoroutine(async () =>
+//        {
+//            await UniTask.Yield();
 
-            var currentThreadId = Thread.CurrentThread.ManagedThreadId;
+//            var currentThreadId = Thread.CurrentThread.ManagedThreadId;
 
 
 
-            await UniTask.SwitchToThreadPool();
-            //await UniTask.SwitchToThreadPool();
-            //await UniTask.SwitchToThreadPool();
+//            await UniTask.SwitchToThreadPool();
+//            //await UniTask.SwitchToThreadPool();
+//            //await UniTask.SwitchToThreadPool();
 
 
             
 
 
 
-            var switchedThreadId = Thread.CurrentThread.ManagedThreadId;
+//            var switchedThreadId = Thread.CurrentThread.ManagedThreadId;
 
 
 
-            currentThreadId.Should().NotBe(switchedThreadId);
+//            currentThreadId.Should().NotBe(switchedThreadId);
 
 
-            await UniTask.Yield();
+//            await UniTask.Yield();
 
-            var switchedThreadId2 = Thread.CurrentThread.ManagedThreadId;
+//            var switchedThreadId2 = Thread.CurrentThread.ManagedThreadId;
 
-            currentThreadId.Should().Be(switchedThreadId2);
-        });
+//            currentThreadId.Should().Be(switchedThreadId2);
+//        });
 
-        //[UnityTest]
-        //public IEnumerator ObservableConversion() => UniTask.ToCoroutine(async () =>
-        //{
-        //    var v = await Observable.Range(1, 10).ToUniTask();
-        //    v.Is(10);
+//        //[UnityTest]
+//        //public IEnumerator ObservableConversion() => UniTask.ToCoroutine(async () =>
+//        //{
+//        //    var v = await Observable.Range(1, 10).ToUniTask();
+//        //    v.Is(10);
 
-        //    v = await Observable.Range(1, 10).ToUniTask(useFirstValue: true);
-        //    v.Is(1);
+//        //    v = await Observable.Range(1, 10).ToUniTask(useFirstValue: true);
+//        //    v.Is(1);
 
-        //    v = await UniTask.DelayFrame(10).ToObservable().ToTask();
-        //    v.Is(10);
+//        //    v = await UniTask.DelayFrame(10).ToObservable().ToTask();
+//        //    v.Is(10);
 
-        //    v = await UniTask.FromResult(99).ToObservable();
-        //    v.Is(99);
-        //});
+//        //    v = await UniTask.FromResult(99).ToObservable();
+//        //    v.Is(99);
+//        //});
 
-        //[UnityTest]
-        //public IEnumerator AwaitableReactiveProperty() => UniTask.ToCoroutine(async () =>
-        //{
-        //    var rp1 = new ReactiveProperty<int>(99);
+//        //[UnityTest]
+//        //public IEnumerator AwaitableReactiveProperty() => UniTask.ToCoroutine(async () =>
+//        //{
+//        //    var rp1 = new ReactiveProperty<int>(99);
 
-        //    UniTask.DelayFrame(100).ContinueWith(x => rp1.Value = x).Forget();
+//        //    UniTask.DelayFrame(100).ContinueWith(x => rp1.Value = x).Forget();
 
-        //    await rp1;
+//        //    await rp1;
 
-        //    rp1.Value.Is(100);
+//        //    rp1.Value.Is(100);
 
-        //    // var delay2 = UniTask.DelayFrame(10);
-        //    // var (a, b ) = await UniTask.WhenAll(rp1.WaitUntilValueChangedAsync(), delay2);
+//        //    // var delay2 = UniTask.DelayFrame(10);
+//        //    // var (a, b ) = await UniTask.WhenAll(rp1.WaitUntilValueChangedAsync(), delay2);
 
-        //});
+//        //});
 
-        //[UnityTest]
-        //public IEnumerator AwaitableReactiveCommand() => UniTask.ToCoroutine(async () =>
-        //{
-        //    var rc = new ReactiveCommand<int>();
+//        //[UnityTest]
+//        //public IEnumerator AwaitableReactiveCommand() => UniTask.ToCoroutine(async () =>
+//        //{
+//        //    var rc = new ReactiveCommand<int>();
 
-        //    UniTask.DelayFrame(100).ContinueWith(x => rc.Execute(x)).Forget();
+//        //    UniTask.DelayFrame(100).ContinueWith(x => rc.Execute(x)).Forget();
 
-        //    var v = await rc;
+//        //    var v = await rc;
 
-        //    v.Is(100);
-        //});
+//        //    v.Is(100);
+//        //});
 
-        [UnityTest]
-        public IEnumerator ExceptionlessCancellation() => UniTask.ToCoroutine(async () =>
-        {
-            var cts = new CancellationTokenSource();
+//        [UnityTest]
+//        public IEnumerator ExceptionlessCancellation() => UniTask.ToCoroutine(async () =>
+//        {
+//            var cts = new CancellationTokenSource();
 
-            UniTask.DelayFrame(10).ContinueWith(() => cts.Cancel()).Forget();
+//            UniTask.DelayFrame(10).ContinueWith(() => cts.Cancel()).Forget();
 
-            var first = Time.frameCount;
-            var canceled = await UniTask.DelayFrame(100, cancellationToken: cts.Token).SuppressCancellationThrow();
+//            var first = Time.frameCount;
+//            var canceled = await UniTask.DelayFrame(100, cancellationToken: cts.Token).SuppressCancellationThrow();
 
-            (Time.frameCount - first).Should().Be(11); // 10 frame canceled
-            canceled.Should().Be(true);
-        });
+//            (Time.frameCount - first).Should().Be(11); // 10 frame canceled
+//            canceled.Should().Be(true);
+//        });
 
-        [UnityTest]
-        public IEnumerator ExceptionCancellation() => UniTask.ToCoroutine(async () =>
-        {
-            var cts = new CancellationTokenSource();
+//        [UnityTest]
+//        public IEnumerator ExceptionCancellation() => UniTask.ToCoroutine(async () =>
+//        {
+//            var cts = new CancellationTokenSource();
 
-            UniTask.DelayFrame(10).ContinueWith(() => cts.Cancel()).Forget();
+//            UniTask.DelayFrame(10).ContinueWith(() => cts.Cancel()).Forget();
 
-            bool occur = false;
-            try
-            {
-                await UniTask.DelayFrame(100, cancellationToken: cts.Token);
-            }
-            catch (OperationCanceledException)
-            {
-                occur = true;
-            }
-            occur.Should().BeTrue();
-        });
+//            bool occur = false;
+//            try
+//            {
+//                await UniTask.DelayFrame(100, cancellationToken: cts.Token);
+//            }
+//            catch (OperationCanceledException)
+//            {
+//                occur = true;
+//            }
+//            occur.Should().BeTrue();
+//        });
 
-        IEnumerator ToaruCoroutineEnumerator()
-        {
-            yield return null;
-            yield return null;
-            yield return null;
-            yield return null;
-            yield return null;
-        }
+//        IEnumerator ToaruCoroutineEnumerator()
+//        {
+//            yield return null;
+//            yield return null;
+//            yield return null;
+//            yield return null;
+//            yield return null;
+//        }
 
-        [UnityTest]
-        public IEnumerator ExceptionUnobserved1() => UniTask.ToCoroutine(async () =>
-        {
-            bool calledEx = false;
-            Action<Exception> action = exx =>
-            {
-                calledEx = true;
-                exx.Message.Should().Be("MyException");
-            };
+//        [UnityTest]
+//        public IEnumerator ExceptionUnobserved1() => UniTask.ToCoroutine(async () =>
+//        {
+//            bool calledEx = false;
+//            Action<Exception> action = exx =>
+//            {
+//                calledEx = true;
+//                exx.Message.Should().Be("MyException");
+//            };
 
-            UniTaskScheduler.UnobservedTaskException += action;
+//            UniTaskScheduler.UnobservedTaskException += action;
 
-            var ex = InException1();
-            ex = default(UniTask);
+//            var ex = InException1();
+//            ex = default(UniTask);
 
-            await UniTask.DelayFrame(3);
+//            await UniTask.DelayFrame(3);
 
-            GC.Collect();
-            GC.WaitForPendingFinalizers();
-            GC.Collect();
+//            GC.Collect();
+//            GC.WaitForPendingFinalizers();
+//            GC.Collect();
 
-            await UniTask.DelayFrame(1);
+//            await UniTask.DelayFrame(1);
 
-            calledEx.Should().BeTrue();
+//            calledEx.Should().BeTrue();
 
-            UniTaskScheduler.UnobservedTaskException -= action;
-        });
+//            UniTaskScheduler.UnobservedTaskException -= action;
+//        });
 
-        [UnityTest]
-        public IEnumerator ExceptionUnobserved2() => UniTask.ToCoroutine(async () =>
-        {
-            bool calledEx = false;
-            Action<Exception> action = exx =>
-            {
-                calledEx = true;
-                exx.Message.Should().Be("MyException");
-            };
+//        [UnityTest]
+//        public IEnumerator ExceptionUnobserved2() => UniTask.ToCoroutine(async () =>
+//        {
+//            bool calledEx = false;
+//            Action<Exception> action = exx =>
+//            {
+//                calledEx = true;
+//                exx.Message.Should().Be("MyException");
+//            };
 
-            UniTaskScheduler.UnobservedTaskException += action;
+//            UniTaskScheduler.UnobservedTaskException += action;
 
-            var ex = InException2();
-            ex = default(UniTask<int>);
+//            var ex = InException2();
+//            ex = default(UniTask<int>);
 
-            await UniTask.DelayFrame(3);
+//            await UniTask.DelayFrame(3);
 
-            GC.Collect();
-            GC.WaitForPendingFinalizers();
-            GC.Collect();
+//            GC.Collect();
+//            GC.WaitForPendingFinalizers();
+//            GC.Collect();
 
-            await UniTask.DelayFrame(1);
+//            await UniTask.DelayFrame(1);
 
-            calledEx.Should().BeTrue();
+//            calledEx.Should().BeTrue();
 
-            UniTaskScheduler.UnobservedTaskException -= action;
-        });
+//            UniTaskScheduler.UnobservedTaskException -= action;
+//        });
 
-        async UniTask InException1()
-        {
-            await UniTask.Yield();
-            throw new Exception("MyException");
-        }
+//        async UniTask InException1()
+//        {
+//            await UniTask.Yield();
+//            throw new Exception("MyException");
+//        }
 
-        async UniTask<int> InException2()
-        {
-            await UniTask.Yield();
-            throw new Exception("MyException");
-        }
+//        async UniTask<int> InException2()
+//        {
+//            await UniTask.Yield();
+//            throw new Exception("MyException");
+//        }
 
-        [UnityTest]
-        public IEnumerator NestedEnumerator() => UniTask.ToCoroutine(async () =>
-        {
-            var time = Time.realtimeSinceStartup;
+//        [UnityTest]
+//        public IEnumerator NestedEnumerator() => UniTask.ToCoroutine(async () =>
+//        {
+//            var time = Time.realtimeSinceStartup;
 
-            await ParentCoroutineEnumerator();
+//            await ParentCoroutineEnumerator();
 
-            var elapsed = Time.realtimeSinceStartup - time;
-            ((int)Math.Round(TimeSpan.FromSeconds(elapsed).TotalSeconds, MidpointRounding.ToEven)).Should().Be(3);
-        });
+//            var elapsed = Time.realtimeSinceStartup - time;
+//            ((int)Math.Round(TimeSpan.FromSeconds(elapsed).TotalSeconds, MidpointRounding.ToEven)).Should().Be(3);
+//        });
 
-        IEnumerator ParentCoroutineEnumerator()
-        {
-            yield return ChildCoroutineEnumerator();
-        }
+//        IEnumerator ParentCoroutineEnumerator()
+//        {
+//            yield return ChildCoroutineEnumerator();
+//        }
 
-        IEnumerator ChildCoroutineEnumerator()
-        {
-            yield return new WaitForSeconds(3);
-        }
+//        IEnumerator ChildCoroutineEnumerator()
+//        {
+//            yield return new WaitForSeconds(3);
+//        }
 
-#endif
-#endif
-    }
-}
+//#endif
+//#endif
+//    }
+//}
 
-#endif
+//#endif

src/UniTask/Assets/Tests/Editor/RunTestEditor.cs

@@ -1,95 +1,95 @@
-#if !(UNITY_4_5 || UNITY_4_6 || UNITY_4_7 || UNITY_5_0 || UNITY_5_1 || UNITY_5_2)
-#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
+//#if !(UNITY_4_5 || UNITY_4_6 || UNITY_4_7 || UNITY_5_0 || UNITY_5_1 || UNITY_5_2)
+//#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
 
-using UnityEngine;
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using UnityEngine.UI;
-using UnityEngine.Scripting;
-using Cysharp.Threading.Tasks;
-using UnityEngine.SceneManagement;
-#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
-using System.Threading.Tasks;
-#endif
-using UnityEngine.Networking;
+//using UnityEngine;
+//using System;
+//using System.Collections;
+//using System.Collections.Generic;
+//using System.Linq;
+//using System.Text;
+//using UnityEngine.UI;
+//using UnityEngine.Scripting;
+//using Cysharp.Threading.Tasks;
+//using UnityEngine.SceneManagement;
+//#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
+//using System.Threading.Tasks;
+//#endif
+//using UnityEngine.Networking;
 
-#if !UNITY_2019_3_OR_NEWER
-using UnityEngine.Experimental.LowLevel;
-#else
-using UnityEngine.LowLevel;
-#endif
+//#if !UNITY_2019_3_OR_NEWER
+//using UnityEngine.Experimental.LowLevel;
+//#else
+//using UnityEngine.LowLevel;
+//#endif
 
-#if !UNITY_WSA
-using Unity.Jobs;
-#endif
-using Unity.Collections;
-using System.Threading;
-using NUnit.Framework;
-using UnityEngine.TestTools;
-using FluentAssertions;
+//#if !UNITY_WSA
+//using Unity.Jobs;
+//#endif
+//using Unity.Collections;
+//using System.Threading;
+//using NUnit.Framework;
+//using UnityEngine.TestTools;
+//using FluentAssertions;
 
-namespace Cysharp.Threading.TasksTests
-{
-    public class RunTest
-    {
-#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
-#if !UNITY_WSA
+//namespace Cysharp.Threading.TasksTests
+//{
+//    public class RunTest
+//    {
+//#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
+//#if !UNITY_WSA
 
-        //[UnityTest]
-        //public IEnumerator RunThread() => UniTask.ToCoroutine(async () =>
-        //{
-        //    var main = Thread.CurrentThread.ManagedThreadId;
-        //    var v = await UniTask.Run(() => { return System.Threading.Thread.CurrentThread.ManagedThreadId; }, false);
-        //    UnityEngine.Debug.Log("Ret Value is:" + v);
-        //    UnityEngine.Debug.Log("Run Here and id:" + System.Threading.Thread.CurrentThread.ManagedThreadId);
-        //    //v.Should().Be(3);
-        //    main.Should().NotBe(Thread.CurrentThread.ManagedThreadId);
-        //});
+//        //[UnityTest]
+//        //public IEnumerator RunThread() => UniTask.ToCoroutine(async () =>
+//        //{
+//        //    var main = Thread.CurrentThread.ManagedThreadId;
+//        //    var v = await UniTask.Run(() => { return System.Threading.Thread.CurrentThread.ManagedThreadId; }, false);
+//        //    UnityEngine.Debug.Log("Ret Value is:" + v);
+//        //    UnityEngine.Debug.Log("Run Here and id:" + System.Threading.Thread.CurrentThread.ManagedThreadId);
+//        //    //v.Should().Be(3);
+//        //    main.Should().NotBe(Thread.CurrentThread.ManagedThreadId);
+//        //});
 
-        [UnityTest]
-        public IEnumerator RunThreadConfigure() => UniTask.ToCoroutine(async () =>
-        {
-            var main = Thread.CurrentThread.ManagedThreadId;
-            var v = await UniTask.Run(() => 3, true);
-            v.Should().Be(3);
-            main.Should().Be(Thread.CurrentThread.ManagedThreadId);
-        });
+//        [UnityTest]
+//        public IEnumerator RunThreadConfigure() => UniTask.ToCoroutine(async () =>
+//        {
+//            var main = Thread.CurrentThread.ManagedThreadId;
+//            var v = await UniTask.Run(() => 3, true);
+//            v.Should().Be(3);
+//            main.Should().Be(Thread.CurrentThread.ManagedThreadId);
+//        });
 
-        //[UnityTest]
-        //public IEnumerator RunThreadException() => UniTask.ToCoroutine(async () =>
-        //{
-        //    var main = Thread.CurrentThread.ManagedThreadId;
-        //    try
-        //    {
-        //        await UniTask.Run<int>(() => throw new Exception(), false);
-        //    }
-        //    catch
-        //    {
-        //        main.Should().NotBe(Thread.CurrentThread.ManagedThreadId);
-        //    }
-        //});
+//        //[UnityTest]
+//        //public IEnumerator RunThreadException() => UniTask.ToCoroutine(async () =>
+//        //{
+//        //    var main = Thread.CurrentThread.ManagedThreadId;
+//        //    try
+//        //    {
+//        //        await UniTask.Run<int>(() => throw new Exception(), false);
+//        //    }
+//        //    catch
+//        //    {
+//        //        main.Should().NotBe(Thread.CurrentThread.ManagedThreadId);
+//        //    }
+//        //});
 
-        [UnityTest]
-        public IEnumerator RunThreadExceptionConfigure() => UniTask.ToCoroutine(async () =>
-        {
-            var main = Thread.CurrentThread.ManagedThreadId;
-            try
-            {
-                await UniTask.Run<int>(() => throw new Exception(), true);
-            }
-            catch
-            {
-                main.Should().Be(Thread.CurrentThread.ManagedThreadId);
-            }
-        });
+//        [UnityTest]
+//        public IEnumerator RunThreadExceptionConfigure() => UniTask.ToCoroutine(async () =>
+//        {
+//            var main = Thread.CurrentThread.ManagedThreadId;
+//            try
+//            {
+//                await UniTask.Run<int>(() => throw new Exception(), true);
+//            }
+//            catch
+//            {
+//                main.Should().Be(Thread.CurrentThread.ManagedThreadId);
+//            }
+//        });
 
 
-#endif
-#endif
-    }
-}
+//#endif
+//#endif
+//    }
+//}
 
-#endif
+//#endif

src/UniTask/Assets/Tests/Editor/WhenAnyTestEditor.cs

@@ -1,43 +1,43 @@
-#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
-#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
+//#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
+//#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
 
-using UnityEngine;
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using UnityEngine.UI;
-using UnityEngine.Scripting;
-using Cysharp.Threading.Tasks;
-using Unity.Collections;
-using System.Threading;
-using NUnit.Framework;
-using UnityEngine.TestTools;
-using FluentAssertions;
+//using UnityEngine;
+//using System;
+//using System.Collections;
+//using System.Collections.Generic;
+//using System.Linq;
+//using System.Text;
+//using UnityEngine.UI;
+//using UnityEngine.Scripting;
+//using Cysharp.Threading.Tasks;
+//using Unity.Collections;
+//using System.Threading;
+//using NUnit.Framework;
+//using UnityEngine.TestTools;
+//using FluentAssertions;
 
-namespace Cysharp.Threading.TasksTests
-{
-    public class WhenAnyTest
-    {
-        [UnityTest]
-        public IEnumerator WhenAnyCanceled() => UniTask.ToCoroutine(async () =>
-        {
-            var cts = new CancellationTokenSource();
-            var successDelayTask = UniTask.Delay(TimeSpan.FromSeconds(1));
-            var cancelTask = UniTask.Delay(TimeSpan.FromSeconds(1), cancellationToken: cts.Token);
-            cts.CancelAfterSlim(200);
+//namespace Cysharp.Threading.TasksTests
+//{
+//    public class WhenAnyTest
+//    {
+//        [UnityTest]
+//        public IEnumerator WhenAnyCanceled() => UniTask.ToCoroutine(async () =>
+//        {
+//            var cts = new CancellationTokenSource();
+//            var successDelayTask = UniTask.Delay(TimeSpan.FromSeconds(1));
+//            var cancelTask = UniTask.Delay(TimeSpan.FromSeconds(1), cancellationToken: cts.Token);
+//            cts.CancelAfterSlim(200);
 
-            try
-            {
-                var r = await UniTask.WhenAny(new[] { successDelayTask, cancelTask });
-            }
-            catch (Exception ex)
-            {
-                ex.Should().BeAssignableTo<OperationCanceledException>();
-            }
-        });
-    }
-}
+//            try
+//            {
+//                var r = await UniTask.WhenAny(new[] { successDelayTask, cancelTask });
+//            }
+//            catch (Exception ex)
+//            {
+//                ex.Should().BeAssignableTo<OperationCanceledException>();
+//            }
+//        });
+//    }
+//}
 
-#endif
+//#endif

src/UniTask/Assets/Tests/Preserve.cs

@@ -6,13 +6,20 @@ using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using System.Threading;
 using System.Threading.Tasks;
+using UnityEngine;
 using UnityEngine.TestTools;
 
 namespace Cysharp.Threading.TasksTests
 {
     public class Preserve
     {
+        public Preserve()
+        {
+            // TaskPool.SetMaxPoolSize(0);
+        }
+
         [UnityTest]
         public IEnumerator AwaitTwice() => UniTask.ToCoroutine(async () =>
         {
@@ -33,12 +40,17 @@ namespace Cysharp.Threading.TasksTests
         [UnityTest]
         public IEnumerator PreserveAllowTwice() => UniTask.ToCoroutine(async () =>
         {
+            await UniTask.Yield(PlayerLoopTiming.Update);
+
             var delay = UniTask.DelayFrame(5, PlayerLoopTiming.PostLateUpdate).Preserve();
-            var before = UnityEngine.Time.frameCount;
+
+            var before = UnityEngine.Time.frameCount; // 0
+
             await delay;
-            var afterOne = UnityEngine.Time.frameCount;
+            var afterOne = UnityEngine.Time.frameCount; // 5
+
             await delay;
-            var afterTwo = UnityEngine.Time.frameCount;
+            var afterTwo = UnityEngine.Time.frameCount; // 5
 
             (afterOne - before).Should().Be(5);
             afterOne.Should().Be(afterTwo);

src/UniTask/Assets/Tests/UniTask.Tests.asmdef

@@ -5,7 +5,8 @@
         "UnityEditor.TestRunner",
         "UniTask",
         "Unity.ResourceManager",
-        "DOTween.Modules"
+        "DOTween.Modules",
+        "UniTask.Linq"
     ],
     "includePlatforms": [],
     "excludePlatforms": [],

src/UniTask/ProjectSettings/EditorBuildSettings.asset

@@ -8,7 +8,7 @@ EditorBuildSettings:
   - enabled: 1
     path: Assets/Scenes/SandboxMain.unity
     guid: 2cda990e2423bbf4892e6590ba056729
-  - enabled: 0
-    path: 
-    guid: 00000000000000000000000000000000
+  - enabled: 1
+    path: Assets/Scenes/ExceptionExamples.unity
+    guid: b5fed17e3ece238439bc796d8747df5d
   m_configObjects: {}

src/UniTask/ProjectSettings/ProjectSettings.asset

@@ -556,6 +556,7 @@ PlayerSettings:
   scriptingDefineSymbols: {}
   platformArchitecture: {}
   scriptingBackend:
+    Android: 1
     Standalone: 1
   il2cppCompilerConfiguration: {}
   managedStrippingLevel: {}