2.0.8-rc5

.circleci/config.yml

@@ -1,114 +0,0 @@
-version: 2.1
-executors:
-  unity:
-    # https://hub.docker.com/r/gableroux/unity3d/tags
-    parameters:
-      version: {type: string}
-    docker:
-      - image: gableroux/unity3d:<< parameters.version >>
-  go:
-    docker:
-      - image: circleci/golang      
-commands:
-  unity_activate:
-    parameters:
-      unity_version: {type: string}
-      unity_license: {type: string}
-    steps:
-      # get activation file, if fail to activate unity, use this key and activate from https://license.unity3d.com/manual
-      - run: apt update && apt install libunwind8 -y
-      - run: /opt/Unity/Editor/Unity -quit -batchmode -nographics -logFile -createManualActivationFile || exit 0
-      - run: cat Unity_v<< parameters.unity_version >>.alf
-      # get from UNITY_LICENSE envvar(base64 encoded(cat foo.ulf | base64 )), this file is generated from above manual activation
-      - run: echo << parameters.unity_license >> | base64 -di  >> .circleci/Unity.ulf
-      - run: /opt/Unity/Editor/Unity -quit -batchmode -nographics -silent-crashes -logFile -manualLicenseFile .circleci/Unity.ulf || exit 0
-jobs:
-  build-and-test:
-    parameters:
-      unity_version: {type: string}
-      unity_license: {type: string}
-    executor:
-      name: unity
-      version: << parameters.unity_version >>
-    steps:
-      - checkout
-      - unity_activate:
-          unity_version: << parameters.unity_version >>
-          unity_license: << parameters.unity_license >>
-      - run:
-          name: Build Linux(Mono)
-          command: /opt/Unity/Editor/Unity -quit -batchmode -nographics -silent-crashes -logFile -projectPath . -executeMethod UnitTestBuilder.BuildUnitTest /headless /ScriptBackend Mono2x /BuildTarget StandaloneLinux64
-          working_directory: .
-      # TODO:check unity version and packages...
-      # - run: ./bin/UnitTest/StandaloneLinux64_Mono2x/test
-  build-and-create-package:
-    parameters:
-      unity_version: {type: string}
-      unity_license: {type: string}
-    executor:
-      name: unity
-      version: << parameters.unity_version >>
-    steps:
-      - checkout
-      - unity_activate:
-          unity_version: << parameters.unity_version >>
-          unity_license: << parameters.unity_license >>
-      - run:
-          name: Export unitypackage
-          command: /opt/Unity/Editor/Unity -quit -batchmode -nographics -silent-crashes -logFile -projectPath . -executeMethod PackageExporter.Export
-          working_directory: .
-      - store_artifacts:
-          path: ./UniRx.Async.unitypackage
-          destination: /UniRx.Async.unitypackage
-  # upload to github by ghr
-  upload-github:
-    executor: go
-    steps:
-      - attach_workspace:
-          at: .
-      - run: go get github.com/tcnksm/ghr
-      - run: ghr -t ${GITHUB_TOKEN} -u ${CIRCLE_PROJECT_USERNAME} -r ${CIRCLE_PROJECT_REPONAME} ${CIRCLE_TAG} .
-      - store_artifacts:
-          path: UniRx.Async.unitypackage
-          destination: UniRx.Async.unitypackage          
-workflows:
-  version: 2
-  build-unity:
-    jobs:
-      # does not exists yet.
-      # - build-and-test:
-      #     unity_version: 2019.3.0a2
-      #     unity_license: ${UNITY_LICENSE_2019_3}
-      # - build-and-test:
-      #     unity_version: 2019.2.0b2
-      #     unity_license: ${UNITY_LICENSE_2019_2}
-      - build-and-test:
-          unity_version: 2019.1.2f1
-          unity_license: ${UNITY_LICENSE_2019_1}
-          filters:
-            tags:
-              only: /.*/
-      # test asmdef will not found.
-      # - build-and-test:
-      #     unity_version: 2018.4.0f1
-      #     unity_license: ${UNITY_LICENSE_2018_4}
-      # # UniTask minimum support version is 2018.3(C# 7.x)
-      # - build-and-test:
-      #     unity_version: 2018.3.12f1
-      #     unity_license: ${UNITY_LICENSE_2018_3}
-      - build-and-create-package:
-          unity_version: 2019.1.2f1
-          unity_license: ${UNITY_LICENSE_2019_1}
-          filters:
-            tags:
-              only: /^\d\.\d\.\d.*/
-            branches:
-              ignore: /.*/
-      - upload-github:
-          requires:
-            - build-and-create-package
-          filters:
-            tags:
-              only: /^\d\.\d\.\d.*/
-            branches:
-              ignore: /.*/

.github/workflows/build-debug.yml

@@ -0,0 +1,73 @@
+name: Build-Debug
+
+on:
+  push:
+    branches:
+      - "**"
+    tags:
+      - "!*" # not a tag push
+  pull_request:
+    types:
+      - opened
+      - synchronize
+
+jobs:
+  build-dotnet:
+    runs-on: ubuntu-latest
+    env:
+      DOTNET_CLI_TELEMETRY_OPTOUT: 1
+      DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
+      NUGET_XMLDOC_MODE: skip
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: 3.1.101
+      - run: dotnet test -c Debug ./src/UniTask.NetCoreTests/UniTask.NetCoreTests.csproj
+
+  build-unity:
+    strategy:
+      matrix:
+        unity: ['2019.3.9f1', '2020.1.0b5']
+        include:
+          - unity: 2019.3.9f1
+            license: UNITY_2019_3
+          - unity: 2020.1.0b5
+            license: UNITY_2020_1
+    runs-on: ubuntu-latest
+    container:
+      # with linux-il2cpp. image from https://hub.docker.com/r/gableroux/unity3d/tags
+      image: gableroux/unity3d:${{ matrix.unity }}-linux-il2cpp
+    steps:
+      - run: apt update && apt install git -y
+      - uses: actions/checkout@v2
+      # create unity activation file and store to artifacts.
+      - run: /opt/Unity/Editor/Unity -quit -batchmode -nographics -logFile -createManualActivationFile || exit 0
+      - uses: actions/upload-artifact@v1
+        with:
+          name: Unity_v${{ matrix.unity }}.alf
+          path: ./Unity_v${{ matrix.unity }}.alf
+      # activate Unity from manual license file(ulf)
+      - run: echo -n "$UNITY_LICENSE" >> .Unity.ulf
+        env:
+          UNITY_LICENSE: ${{ secrets[matrix.license] }}
+      - name: Activate Unity, always returns a success. But if a subsequent run fails, the activation may have failed(if succeeded, shows `Next license update check is after` and not shows other message(like GUID != GUID). If fails not). In that case, upload the artifact's .alf file to https://license.unity3d.com/manual to get the .ulf file and set it to secrets.
+        run: /opt/Unity/Editor/Unity -quit -batchmode -nographics -silent-crashes -logFile -manualLicenseFile .Unity.ulf || exit 0
+
+      # Execute scripts: RuntimeUnitTestToolkit
+      - name: Build UnitTest(Linux64, mono)
+        run: /opt/Unity/Editor/Unity -quit -batchmode -nographics -silent-crashes -logFile -projectPath . -executeMethod UnitTestBuilder.BuildUnitTest /headless /ScriptBackend mono /BuildTarget StandaloneLinux64
+        working-directory: src/UniTask
+      - name: Execute UnitTest
+        run: ./src/UniTask/bin/UnitTest/StandaloneLinux64_Mono2x/test
+
+      # Execute scripts: Export Package
+      - name: Export unitypackage
+        run: /opt/Unity/Editor/Unity -quit -batchmode -nographics -silent-crashes -logFile -projectPath . -executeMethod PackageExporter.Export
+        working-directory: src/UniTask
+
+      # Store artifacts.      
+      - uses: actions/upload-artifact@v2
+        with:
+          name: UniTask.unitypackage.zip
+          path: ./src/UniTask/*.unitypackage

.github/workflows/build-release.yml

@@ -0,0 +1,108 @@
+name: Build-Release
+
+on:
+  push:
+    tags:
+      - "[0-9]+.[0-9]+.[0-9]+*"
+
+jobs:
+  build-dotnet:
+    runs-on: ubuntu-latest
+    env:
+      DOTNET_CLI_TELEMETRY_OPTOUT: 1
+      DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
+      NUGET_XMLDOC_MODE: skip
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: 3.1.101
+      # set release tag(*.*.*) to env.GIT_TAG
+      - run: echo ::set-env name=GIT_TAG::${GITHUB_REF#refs/tags/}
+
+      # build CommandTools first (use dotnet run command in ZLogger.csproj)
+      - run: dotnet build -c Release ./tools/CommandTools/CommandTools.csproj
+      - run: dotnet build -c Release -p:Version=${{ env.GIT_TAG }}
+      - run: dotnet test -c Release --no-build
+      - run: dotnet pack ./src/ZLogger/ZLogger.csproj -c Release --no-build -p:Version=${{ env.GIT_TAG }}
+
+      # Store artifacts.
+      - uses: actions/upload-artifact@v1
+        with:
+          name: nuget
+          path: ./src/ZLogger/bin/Release/ZLogger.${{ env.GIT_TAG }}.nupkg
+      
+  build-unity:
+    strategy:
+      matrix:
+        unity: ['2019.3.9f1']
+        include:
+          - unity: 2019.3.9f1
+            license: UNITY_2019_3
+    runs-on: ubuntu-latest
+    container:
+      # with linux-il2cpp. image from https://hub.docker.com/r/gableroux/unity3d/tags
+      image: gableroux/unity3d:${{ matrix.unity }}-linux-il2cpp
+    steps:
+      - run: apt update && apt install git -y
+      - uses: actions/checkout@v2
+      - run: echo -n "$UNITY_LICENSE" >> .Unity.ulf
+        env:
+          UNITY_LICENSE: ${{ secrets[matrix.license] }}
+      - run: /opt/Unity/Editor/Unity -quit -batchmode -nographics -silent-crashes -logFile -manualLicenseFile .Unity.ulf || exit 0
+
+      # set release tag(*.*.*) to env.GIT_TAG
+      - run: echo ::set-env name=GIT_TAG::${GITHUB_REF#refs/tags/}
+
+      # Execute scripts: Export Package
+      - name: Export unitypackage
+        run: /opt/Unity/Editor/Unity -quit -batchmode -nographics -silent-crashes -logFile -projectPath . -executeMethod PackageExporter.Export
+        working-directory: src/ZLogger.Unity
+        env:
+          UNITY_PACKAGE_VERSION: ${{ env.GIT_TAG }}
+
+      # Store artifacts.
+      - uses: actions/upload-artifact@v1
+        with:
+          name: ZLogger.Unity.${{ env.GIT_TAG }}.unitypackage
+          path: ./src/ZLogger.Unity/ZLogger.Unity.${{ env.GIT_TAG }}.unitypackage
+
+  create-release:
+    needs: [build-dotnet, build-unity]
+    runs-on: ubuntu-latest
+    env:
+      DOTNET_CLI_TELEMETRY_OPTOUT: 1
+      DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
+      NUGET_XMLDOC_MODE: skip
+    steps:
+    # setup dotnet for nuget push
+    - uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 3.1.101
+    # set release tag(*.*.*) to env.GIT_TAG
+    - run: echo ::set-env name=GIT_TAG::${GITHUB_REF#refs/tags/}
+
+    # Create Releases
+    - uses: actions/create-release@v1
+      id: create_release
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        tag_name: ${{ github.ref }}
+        release_name: Ver.${{ github.ref }}
+
+    # Download (All) Artifacts to current directory
+    - uses: actions/download-artifact@v2-preview
+
+    # Upload to NuGet
+    - run: dotnet nuget push "./nuget/*.nupkg" -s https://www.nuget.org/api/v2/package -k ${{ secrets.NUGET_KEY }}
+
+    # Upload to Releases(unitypackage)
+    - uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }}
+        asset_path: ./ZLogger.Unity.${{ env.GIT_TAG }}.unitypackage/ZLogger.Unity.${{ env.GIT_TAG }}.unitypackage
+        asset_name: ZLogger.Unity.${{ env.GIT_TAG }}.unitypackage
+        asset_content_type: application/octet-stream

.github/workflows/toc.yml

@@ -0,0 +1,15 @@
+name: TOC Generator
+
+on:
+  push:
+    paths:
+      - 'README.md'
+
+jobs:
+  generateTOC:
+    name: TOC Generator
+    runs-on: ubuntu-latest
+    steps:
+      - uses: technote-space/toc-generator@v2.4.0
+        with:
+          TOC_TITLE: "## Table of Contents"

README.md

@@ -1,10 +1,29 @@
-# UniTask
+UniTask
-
+===
-[![CircleCI](https://circleci.com/gh/Cysharp/UniTask.svg?style=svg)](https://circleci.com/gh/Cysharp/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.
 
-> UniTask was included in UniRx before v7 but now completely separated, it no dependent each other.
+<!-- 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
+
+- [Getting started](#getting-started)
+- [`UniTask<T>`](#unitaskt)
+- [Cancellation and Exception handling](#cancellation-and-exception-handling)
+- [Progress](#progress)
+- [UniTaskTracker](#unitasktracker)
+- [Reusable Promises](#reusable-promises)
+- [awaitable Events](#awaitable-events)
+- [async void vs async UniTask/UniTaskVoid](#async-void-vs-async-unitaskunitaskvoid)
+- [For Unit Testing](#for-unit-testing)
+- [Method List](#method-list)
+- [UPM Package](#upm-package)
+- [ECS, PlayerLoop](#ecs-playerloop)
+- [License](#license)
+
+<!-- END doctoc generated TOC please keep comment here to allow auto update -->
+
 
 Getting started
 ---
@@ -354,6 +373,15 @@ or add `"com.cysharp.unitask": "https://github.com/Cysharp/UniTask.git?path=Asse
 
 If you want to set a target version, UniTask is using `*.*.*` release tag so you can specify a version like `#1.3.0`. For example `https://github.com/Cysharp/UniTask.git?path=Assets/UniRx.Async#1.3.1`.
 
+ECS, PlayerLoop
+---
+TODO:
+
+```csharp
+var loop = PlayerLoop.GetCurrentPlayerLoop();
+PlayerLoopHelper.Initialize(ref loop);
+```
+
 License
 ---
 This library is under the MIT License.

src/UniTask.NetCoreSandbox/Program.cs

@@ -86,32 +86,18 @@ namespace NetCoreSandbox
             await Task.Delay(10, cancellationToken);
         }
 
-        static async Task Main(string[] args)
+
+
+        static void Main(string[] args)
         {
-            await foreach (var item in UniTaskAsyncEnumerable.Range(1, 10)
+
-                .SelectAwait(x => UniTask.Run(() => x))
+            var channel = Channel.CreateSingleConsumerUnbounded<int>();
-                .TakeLast(6)
 
 
 
-                )
-            {
 
 
 
-                Console.WriteLine(item);
-            }
-
-// AsyncEnumerable.Range(1,10).FirstAsync(
-            // AsyncEnumerable.Range(1, 10).GroupBy(x=>x).Select(x=>x.first
-
-
-            // AsyncEnumerable.Range(1,10).WithCancellation(CancellationToken.None).WithCancellation
-
-
-            //Enumerable.Range(1,10).ToHashSet(
-
-
         }
 
 

src/UniTask.NetCoreTests/AsyncReactivePropertyTest.cs

@@ -0,0 +1,118 @@
+using Cysharp.Threading.Tasks;
+using FluentAssertions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Channels;
+using Cysharp.Threading.Tasks.Linq;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace NetCoreTests
+{
+    public class AsyncReactivePropertyTest
+    {
+        [Fact]
+        public async Task Iteration()
+        {
+            var rp = new AsyncReactiveProperty<int>(99);
+
+            var f = await rp.FirstAsync();
+            f.Should().Be(99);
+
+            var array = rp.Take(5).ToArrayAsync();
+
+            rp.Value = 100;
+            rp.Value = 100;
+            rp.Value = 100;
+            rp.Value = 131;
+
+            var ar = await array;
+
+            ar.Should().BeEquivalentTo(new[] { 99, 100, 100, 100, 131 });
+        }
+
+        [Fact]
+        public async Task WithoutCurrent()
+        {
+            var rp = new AsyncReactiveProperty<int>(99);
+
+            var array = rp.WithoutCurrent().Take(5).ToArrayAsync();
+
+            rp.Value = 100;
+            rp.Value = 100;
+            rp.Value = 100;
+            rp.Value = 131;
+            rp.Value = 191;
+
+            var ar = await array;
+
+            ar.Should().BeEquivalentTo(new[] { 100, 100, 100, 131, 191 });
+        }
+
+        [Fact]
+        public async Task StateIteration()
+        {
+            var rp = new State<int>(99);
+            var setter = rp.GetSetter();
+
+            var f = await rp.FirstAsync();
+            f.Should().Be(99);
+
+            var array = rp.Take(5).ToArrayAsync();
+
+            setter(100);
+            setter(100);
+            setter(100);
+            setter(131);
+
+            var ar = await array;
+
+            ar.Should().BeEquivalentTo(new[] { 99, 100, 100, 100, 131 });
+        }
+
+        [Fact]
+        public async Task StateWithoutCurrent()
+        {
+            var rp = new State<int>(99);
+            var setter = rp.GetSetter();
+
+            var array = rp.WithoutCurrent().Take(5).ToArrayAsync();
+            setter(100);
+            setter(100);
+            setter(100);
+            setter(131);
+            setter(191);
+
+            var ar = await array;
+
+            ar.Should().BeEquivalentTo(new[] { 100, 100, 100, 131, 191 });
+        }
+
+
+
+        [Fact]
+        public void StateFromEnumeration()
+        {
+            var rp = new AsyncReactiveProperty<int>(10);
+
+            var state = rp.ToState(CancellationToken.None);
+
+            rp.Value = 10;
+            state.Value.Should().Be(10);
+
+            rp.Value = 20;
+            state.Value.Should().Be(20);
+
+            state.Dispose();
+
+            rp.Value = 30;
+            state.Value.Should().Be(20);
+        }
+
+    }
+
+
+}

src/UniTask.NetCoreTests/CancellationTokenTest.cs

@@ -0,0 +1,51 @@
+using Cysharp.Threading.Tasks;
+using FluentAssertions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Channels;
+using Cysharp.Threading.Tasks.Linq;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace NetCoreTests
+{
+    public class CancellationTokenTest
+    {
+        [Fact]
+        public async Task WaitUntilCanceled()
+        {
+            var cts = new CancellationTokenSource();
+
+            cts.CancelAfter(TimeSpan.FromSeconds(1.5));
+
+            var now = DateTime.UtcNow;
+
+            await cts.Token.WaitUntilCanceled();
+
+            var elapsed = DateTime.UtcNow - now;
+
+            elapsed.Should().BeGreaterThan(TimeSpan.FromSeconds(1));
+        }
+
+        [Fact]
+        public void AlreadyCanceled()
+        {
+            var cts = new CancellationTokenSource();
+
+            cts.Cancel();
+
+            cts.Token.WaitUntilCanceled().GetAwaiter().IsCompleted.Should().BeTrue();
+        }
+
+        [Fact]
+        public void None()
+        {
+            CancellationToken.None.WaitUntilCanceled().GetAwaiter().IsCompleted.Should().BeTrue();
+        }
+    }
+
+
+}

src/UniTask.NetCoreTests/ChannelTest.cs

@@ -0,0 +1,370 @@
+using Cysharp.Threading.Tasks;
+using FluentAssertions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Channels;
+using Cysharp.Threading.Tasks.Linq;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace NetCoreTests
+{
+    public class ChannelTest
+    {
+        (System.Threading.Channels.Channel<int>, Cysharp.Threading.Tasks.Channel<int>) CreateChannel()
+        {
+            var reference = System.Threading.Channels.Channel.CreateUnbounded<int>(new UnboundedChannelOptions
+            {
+                AllowSynchronousContinuations = true,
+                SingleReader = true,
+                SingleWriter = false
+            });
+
+            var channel = Cysharp.Threading.Tasks.Channel.CreateSingleConsumerUnbounded<int>();
+
+            return (reference, channel);
+        }
+
+        [Fact]
+        public async Task SingleWriteSingleRead()
+        {
+            var (reference, channel) = CreateChannel();
+
+            foreach (var item in new[] { 10, 20, 30 })
+            {
+                var t1 = reference.Reader.WaitToReadAsync();
+                var t2 = channel.Reader.WaitToReadAsync();
+
+                t1.IsCompleted.Should().BeFalse();
+                t2.Status.IsCompleted().Should().BeFalse();
+
+                reference.Writer.TryWrite(item);
+                channel.Writer.TryWrite(item);
+
+                (await t1).Should().BeTrue();
+                (await t2).Should().BeTrue();
+
+                reference.Reader.TryRead(out var refitem).Should().BeTrue();
+                channel.Reader.TryRead(out var chanitem).Should().BeTrue();
+                refitem.Should().Be(item);
+                chanitem.Should().Be(item);
+            }
+        }
+
+        [Fact]
+        public async Task MultiWrite()
+        {
+            var (reference, channel) = CreateChannel();
+
+            foreach (var item in new[] { 10, 20, 30 })
+            {
+                var t1 = reference.Reader.WaitToReadAsync();
+                var t2 = channel.Reader.WaitToReadAsync();
+
+                t1.IsCompleted.Should().BeFalse();
+                t2.Status.IsCompleted().Should().BeFalse();
+
+                foreach (var i in Enumerable.Range(1, 3))
+                {
+                    reference.Writer.TryWrite(item * i);
+                    channel.Writer.TryWrite(item * i);
+                }
+
+                (await t1).Should().BeTrue();
+                (await t2).Should().BeTrue();
+
+                foreach (var i in Enumerable.Range(1, 3))
+                {
+                    (await reference.Reader.WaitToReadAsync()).Should().BeTrue();
+                    (await channel.Reader.WaitToReadAsync()).Should().BeTrue();
+
+                    reference.Reader.TryRead(out var refitem).Should().BeTrue();
+                    channel.Reader.TryRead(out var chanitem).Should().BeTrue();
+                    refitem.Should().Be(item * i);
+                    chanitem.Should().Be(item * i);
+                }
+            }
+        }
+
+        [Fact]
+        public async Task CompleteOnEmpty()
+        {
+            var (reference, channel) = CreateChannel();
+
+            foreach (var item in new[] { 10, 20, 30 })
+            {
+                reference.Writer.TryWrite(item);
+                channel.Writer.TryWrite(item);
+                reference.Reader.TryRead(out var refitem);
+                channel.Reader.TryRead(out var chanitem);
+            }
+
+            // Empty.
+
+            var completion1 = reference.Reader.Completion;
+            var wait1 = reference.Reader.WaitToReadAsync();
+
+            var completion2 = channel.Reader.Completion;
+            var wait2 = channel.Reader.WaitToReadAsync();
+
+            reference.Writer.TryComplete();
+            channel.Writer.TryComplete();
+
+            completion1.Status.Should().Be(TaskStatus.RanToCompletion);
+            completion2.Status.Should().Be(UniTaskStatus.Succeeded);
+
+            (await wait1).Should().BeFalse();
+            (await wait2).Should().BeFalse();
+        }
+
+        [Fact]
+        public async Task CompleteErrorOnEmpty()
+        {
+            var (reference, channel) = CreateChannel();
+
+            foreach (var item in new[] { 10, 20, 30 })
+            {
+                reference.Writer.TryWrite(item);
+                channel.Writer.TryWrite(item);
+                reference.Reader.TryRead(out var refitem);
+                channel.Reader.TryRead(out var chanitem);
+            }
+
+            // Empty.
+
+            var completion1 = reference.Reader.Completion;
+            var wait1 = reference.Reader.WaitToReadAsync();
+
+            var completion2 = channel.Reader.Completion;
+            var wait2 = channel.Reader.WaitToReadAsync();
+
+            var ex = new Exception();
+            reference.Writer.TryComplete(ex);
+            channel.Writer.TryComplete(ex);
+
+            completion1.Status.Should().Be(TaskStatus.Faulted);
+            completion2.Status.Should().Be(UniTaskStatus.Faulted);
+
+            (await Assert.ThrowsAsync<Exception>(async () => await wait1)).Should().Be(ex);
+            (await Assert.ThrowsAsync<Exception>(async () => await wait2)).Should().Be(ex);
+        }
+
+        [Fact]
+        public async Task CompleteWithRest()
+        {
+            var (reference, channel) = CreateChannel();
+
+            foreach (var item in new[] { 10, 20, 30 })
+            {
+                reference.Writer.TryWrite(item);
+                channel.Writer.TryWrite(item);
+            }
+
+            // Three Item2.
+
+            var completion1 = reference.Reader.Completion;
+            var wait1 = reference.Reader.WaitToReadAsync();
+
+            var completion2 = channel.Reader.Completion;
+            var wait2 = channel.Reader.WaitToReadAsync();
+
+            reference.Writer.TryComplete();
+            channel.Writer.TryComplete();
+
+            // completion1.Status.Should().Be(TaskStatus.WaitingForActivation);
+            completion2.Status.Should().Be(UniTaskStatus.Pending);
+
+            (await wait1).Should().BeTrue();
+            (await wait2).Should().BeTrue();
+
+            foreach (var item in new[] { 10, 20, 30 })
+            {
+                reference.Reader.TryRead(out var i1).Should().BeTrue();
+                channel.Reader.TryRead(out var i2).Should().BeTrue();
+                i1.Should().Be(item);
+                i2.Should().Be(item);
+            }
+
+            (await reference.Reader.WaitToReadAsync()).Should().BeFalse();
+            (await channel.Reader.WaitToReadAsync()).Should().BeFalse();
+
+            completion1.Status.Should().Be(TaskStatus.RanToCompletion);
+            completion2.Status.Should().Be(UniTaskStatus.Succeeded);
+        }
+
+
+        [Fact]
+        public async Task CompleteErrorWithRest()
+        {
+            var (reference, channel) = CreateChannel();
+
+            foreach (var item in new[] { 10, 20, 30 })
+            {
+                reference.Writer.TryWrite(item);
+                channel.Writer.TryWrite(item);
+            }
+
+            // Three Item2.
+
+            var completion1 = reference.Reader.Completion;
+            var wait1 = reference.Reader.WaitToReadAsync();
+
+            var completion2 = channel.Reader.Completion;
+            var wait2 = channel.Reader.WaitToReadAsync();
+
+            var ex = new Exception();
+            reference.Writer.TryComplete(ex);
+            channel.Writer.TryComplete(ex);
+
+            // completion1.Status.Should().Be(TaskStatus.WaitingForActivation);
+            completion2.Status.Should().Be(UniTaskStatus.Pending);
+
+            (await wait1).Should().BeTrue();
+            (await wait2).Should().BeTrue();
+
+            foreach (var item in new[] { 10, 20, 30 })
+            {
+                reference.Reader.TryRead(out var i1).Should().BeTrue();
+                channel.Reader.TryRead(out var i2).Should().BeTrue();
+                i1.Should().Be(item);
+                i2.Should().Be(item);
+            }
+
+            wait1 = reference.Reader.WaitToReadAsync();
+            wait2 = channel.Reader.WaitToReadAsync();
+
+            (await Assert.ThrowsAsync<Exception>(async () => await wait1)).Should().Be(ex);
+            (await Assert.ThrowsAsync<Exception>(async () => await wait2)).Should().Be(ex);
+
+            completion1.Status.Should().Be(TaskStatus.Faulted);
+            completion2.Status.Should().Be(UniTaskStatus.Faulted);
+        }
+
+        [Fact]
+        public async Task Cancellation()
+        {
+            var (reference, channel) = CreateChannel();
+
+            var cts = new CancellationTokenSource();
+
+            var wait1 = reference.Reader.WaitToReadAsync(cts.Token);
+            var wait2 = channel.Reader.WaitToReadAsync(cts.Token);
+
+            cts.Cancel();
+
+            (await Assert.ThrowsAsync<OperationCanceledException>(async () => await wait1)).CancellationToken.Should().Be(cts.Token);
+            (await Assert.ThrowsAsync<OperationCanceledException>(async () => await wait2)).CancellationToken.Should().Be(cts.Token);
+        }
+
+        [Fact]
+        public async Task AsyncEnumerator()
+        {
+            var (reference, channel) = CreateChannel();
+
+            var ta1 = reference.Reader.ReadAllAsync().ToArrayAsync();
+            var ta2 = channel.Reader.ReadAllAsync().ToArrayAsync();
+
+            foreach (var item in new[] { 10, 20, 30 })
+            {
+                reference.Writer.TryWrite(item);
+                channel.Writer.TryWrite(item);
+            }
+
+            reference.Writer.TryComplete();
+            channel.Writer.TryComplete();
+
+            (await ta1).Should().BeEquivalentTo(new[] { 10, 20, 30 });
+            (await ta2).Should().BeEquivalentTo(new[] { 10, 20, 30 });
+        }
+
+        [Fact]
+        public async Task AsyncEnumeratorCancellation()
+        {
+            // Token1, Token2 and Cancel1
+            {
+                var cts1 = new CancellationTokenSource();
+                var cts2 = new CancellationTokenSource();
+
+                var (reference, channel) = CreateChannel();
+
+                var ta1 = reference.Reader.ReadAllAsync(cts1.Token).ToArrayAsync(cts2.Token);
+                var ta2 = channel.Reader.ReadAllAsync(cts1.Token).ToArrayAsync(cts2.Token);
+
+                foreach (var item in new[] { 10, 20, 30 })
+                {
+                    reference.Writer.TryWrite(item);
+                    channel.Writer.TryWrite(item);
+                }
+
+                cts1.Cancel();
+
+                await Assert.ThrowsAsync<OperationCanceledException>(async () => await ta1);
+                (await Assert.ThrowsAsync<OperationCanceledException>(async () => await ta2)).CancellationToken.Should().Be(cts1.Token);
+            }
+            // Token1, Token2 and Cancel2
+            {
+                var cts1 = new CancellationTokenSource();
+                var cts2 = new CancellationTokenSource();
+
+                var (reference, channel) = CreateChannel();
+
+                var ta1 = reference.Reader.ReadAllAsync(cts1.Token).ToArrayAsync(cts2.Token);
+                var ta2 = channel.Reader.ReadAllAsync(cts1.Token).ToArrayAsync(cts2.Token);
+
+                foreach (var item in new[] { 10, 20, 30 })
+                {
+                    reference.Writer.TryWrite(item);
+                    channel.Writer.TryWrite(item);
+                }
+
+                cts2.Cancel();
+
+                await Assert.ThrowsAsync<OperationCanceledException>(async () => await ta1);
+                (await Assert.ThrowsAsync<OperationCanceledException>(async () => await ta2)).CancellationToken.Should().Be(cts2.Token);
+            }
+            // Token1 and Cancel1
+            {
+                var cts1 = new CancellationTokenSource();
+
+                var (reference, channel) = CreateChannel();
+
+                var ta1 = reference.Reader.ReadAllAsync(cts1.Token).ToArrayAsync();
+                var ta2 = channel.Reader.ReadAllAsync(cts1.Token).ToArrayAsync();
+
+                foreach (var item in new[] { 10, 20, 30 })
+                {
+                    reference.Writer.TryWrite(item);
+                    channel.Writer.TryWrite(item);
+                }
+
+                cts1.Cancel();
+
+                await Assert.ThrowsAsync<OperationCanceledException>(async () => await ta1);
+                (await Assert.ThrowsAsync<OperationCanceledException>(async () => await ta2)).CancellationToken.Should().Be(cts1.Token);
+            }
+            // Token2 and Cancel2
+            {
+                var cts2 = new CancellationTokenSource();
+
+                var (reference, channel) = CreateChannel();
+
+                var ta1 = reference.Reader.ReadAllAsync().ToArrayAsync(cts2.Token);
+                var ta2 = channel.Reader.ReadAllAsync().ToArrayAsync(cts2.Token);
+
+                foreach (var item in new[] { 10, 20, 30 })
+                {
+                    reference.Writer.TryWrite(item);
+                    channel.Writer.TryWrite(item);
+                }
+
+                cts2.Cancel();
+
+                await Assert.ThrowsAsync<OperationCanceledException>(async () => await ta1);
+                (await Assert.ThrowsAsync<OperationCanceledException>(async () => await ta2)).CancellationToken.Should().Be(cts2.Token);
+            }
+        }
+    }
+}

src/UniTask.NetCoreTests/DeferTest.cs

@@ -0,0 +1,47 @@
+using Cysharp.Threading.Tasks;
+using FluentAssertions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Channels;
+using Cysharp.Threading.Tasks.Linq;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace NetCoreTests
+{
+    public class DeferTest
+    {
+        [Fact]
+        public async Task D()
+        {
+            var created = false;
+            var v = UniTask.Defer(() => { created = true; return UniTask.Run(() => 10); });
+
+            created.Should().BeFalse();
+
+            var t = await v;
+
+            created.Should().BeTrue();
+
+            t.Should().Be(10);
+        }
+
+        [Fact]
+        public async Task D2()
+        {
+            var created = false;
+            var v = UniTask.Defer(() => { created = true; return UniTask.Run(() => 10).AsUniTask(); });
+
+            created.Should().BeFalse();
+
+            await v;
+
+            created.Should().BeTrue();
+        }
+    }
+
+
+}

src/UniTask.NetCoreTests/Linq/PulbishTest.cs

@@ -0,0 +1,78 @@
+using Cysharp.Threading.Tasks;
+using Cysharp.Threading.Tasks.Linq;
+using FluentAssertions;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace NetCoreTests.Linq
+{
+    public class PublishTest
+    {
+        [Fact]
+        public async Task Normal()
+        {
+            var rp = new AsyncReactiveProperty<int>(1);
+
+            var multicast = rp.Publish();
+
+            var a = multicast.ToArrayAsync();
+            var b = multicast.Take(2).ToArrayAsync();
+
+            var disp = multicast.Connect();
+
+            rp.Value = 2;
+
+            (await b).Should().BeEquivalentTo(1, 2);
+
+            var c = multicast.ToArrayAsync();
+
+            rp.Value = 3;
+            rp.Value = 4;
+            rp.Value = 5;
+
+            rp.Dispose();
+
+            (await a).Should().BeEquivalentTo(1, 2, 3, 4, 5);
+            (await c).Should().BeEquivalentTo(3, 4, 5);
+
+            disp.Dispose();
+        }
+
+        [Fact]
+        public async Task Cancel()
+        {
+            var rp = new AsyncReactiveProperty<int>(1);
+
+            var multicast = rp.Publish();
+
+            var a = multicast.ToArrayAsync();
+            var b = multicast.Take(2).ToArrayAsync();
+
+            var disp = multicast.Connect();
+
+            rp.Value = 2;
+
+            (await b).Should().BeEquivalentTo(1, 2);
+
+            var c = multicast.ToArrayAsync();
+
+            rp.Value = 3;
+
+            disp.Dispose();
+
+            rp.Value = 4;
+            rp.Value = 5;
+
+            rp.Dispose();
+
+            await Assert.ThrowsAsync<OperationCanceledException>(async () => await a);
+            await Assert.ThrowsAsync<OperationCanceledException>(async () => await c);
+        }
+
+
+    }
+}

src/UniTask.NetCoreTests/Linq/QueueTest.cs

@@ -0,0 +1,29 @@
+using Cysharp.Threading.Tasks;
+using Cysharp.Threading.Tasks.Linq;
+using FluentAssertions;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace NetCoreTests.Linq
+{
+    public class QueueTest
+    {
+        [Fact]
+        public async Task Q()
+        {
+            var rp = new AsyncReactiveProperty<int>(100);
+
+            var l = new List<int>();
+            await rp.Take(10).Queue().ForEachAsync(x =>
+            {
+                rp.Value += 10;
+                l.Add(x);
+            });
+
+            l.Should().BeEquivalentTo(100, 110, 120, 130, 140, 150, 160, 170, 180, 190);
+        }
+    }
+}

src/UniTask.NetCoreTests/Linq/TakeInfinityTest.cs

@@ -0,0 +1,106 @@
+using Cysharp.Threading.Tasks;
+using Cysharp.Threading.Tasks.Linq;
+using FluentAssertions;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace NetCoreTests.Linq
+{
+    public class TakeInfinityTest
+    {
+        [Fact]
+        public async Task Take()
+        {
+            var rp = new AsyncReactiveProperty<int>(1);
+
+            var xs = rp.Take(5).ToArrayAsync();
+
+            rp.Value = 2;
+            rp.Value = 3;
+            rp.Value = 4;
+            rp.Value = 5;
+
+            (await xs).Should().BeEquivalentTo(1, 2, 3, 4, 5);
+        }
+
+        [Fact]
+        public async Task TakeWhile()
+        {
+            var rp = new AsyncReactiveProperty<int>(1);
+
+            var xs = rp.TakeWhile(x => x != 5).ToArrayAsync();
+
+            rp.Value = 2;
+            rp.Value = 3;
+            rp.Value = 4;
+            rp.Value = 5;
+
+            (await xs).Should().BeEquivalentTo(1, 2, 3, 4);
+        }
+
+        [Fact]
+        public async Task TakeUntil()
+        {
+            var cts = new CancellationTokenSource();
+
+            var rp = new AsyncReactiveProperty<int>(1);
+
+            var xs = rp.TakeUntilCanceled(cts.Token).ToArrayAsync();
+
+            var c = CancelAsync();
+
+            await c;
+            var foo = await xs;
+
+            foo.Should().BeEquivalentTo(new[] { 1, 10, 20 });
+
+            async Task CancelAsync()
+            {
+                rp.Value = 10;
+                await Task.Yield();
+                rp.Value = 20;
+                await Task.Yield();
+                cts.Cancel();
+                rp.Value = 30;
+                await Task.Yield();
+                rp.Value = 40;
+            }
+        }
+
+        [Fact]
+        public async Task SkipUntil()
+        {
+            var cts = new CancellationTokenSource();
+
+            var rp = new AsyncReactiveProperty<int>(1);
+
+            var xs = rp.SkipUntilCanceled(cts.Token).ToArrayAsync();
+
+            var c = CancelAsync();
+
+            await c;
+            var foo = await xs;
+
+            foo.Should().BeEquivalentTo(new[] { 30, 40 });
+
+            async Task CancelAsync()
+            {
+                rp.Value = 10;
+                await Task.Yield();
+                rp.Value = 20;
+                await Task.Yield();
+                cts.Cancel();
+                rp.Value = 30;
+                await Task.Yield();
+                rp.Value = 40;
+
+                rp.Dispose(); // complete.
+            }
+        }
+
+    }
+}

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

@@ -4,18 +4,19 @@ using System.Threading;
 
 namespace Cysharp.Threading.Tasks
 {
-    public interface IAsyncReadOnlyReactiveProperty<T> : IUniTaskAsyncEnumerable<T>
+    public interface IReadOnlyAsyncReactiveProperty<T> : IUniTaskAsyncEnumerable<T>
     {
         T Value { get; }
+        IUniTaskAsyncEnumerable<T> WithoutCurrent();
     }
 
-    public interface IAsyncReactiveProperty<T> : IAsyncReadOnlyReactiveProperty<T>
+    public interface IAsyncReactiveProperty<T> : IReadOnlyAsyncReactiveProperty<T>
     {
         new T Value { get; set; }
     }
 
     [Serializable]
-    public class AsyncReactiveProperty<T> : IUniTaskAsyncEnumerable<T>, IDisposable
+    public class AsyncReactiveProperty<T> : IAsyncReactiveProperty<T>, IDisposable
     {
         TriggerEvent<T> triggerEvent;
 
@@ -43,17 +44,55 @@ namespace Cysharp.Threading.Tasks
             this.triggerEvent = default;
         }
 
+        public IUniTaskAsyncEnumerable<T> WithoutCurrent()
+        {
+            return new WithoutCurrentEnumerable(this);
+        }
+
         public IUniTaskAsyncEnumerator<T> GetAsyncEnumerator(CancellationToken cancellationToken)
         {
-            return new Enumerator(this, cancellationToken);
+            return new Enumerator(this, cancellationToken, true);
         }
 
         public void Dispose()
         {
-            triggerEvent.SetCanceled(CancellationToken.None);
+            triggerEvent.SetCompleted();
         }
 
-        sealed class Enumerator : MoveNextSource, IUniTaskAsyncEnumerator<T>, IResolveCancelPromise<T>
+        public static implicit operator T(AsyncReactiveProperty<T> value)
+        {
+            return value.Value;
+        }
+
+        public override string ToString()
+        {
+            if (isValueType) return latestValue.ToString();
+            return latestValue?.ToString();
+        }
+
+        static bool isValueType;
+
+        static AsyncReactiveProperty()
+        {
+            isValueType = typeof(T).IsValueType;
+        }
+
+        class WithoutCurrentEnumerable : IUniTaskAsyncEnumerable<T>
+        {
+            readonly AsyncReactiveProperty<T> parent;
+
+            public WithoutCurrentEnumerable(AsyncReactiveProperty<T> parent)
+            {
+                this.parent = parent;
+            }
+
+            public IUniTaskAsyncEnumerator<T> GetAsyncEnumerator(CancellationToken cancellationToken = default)
+            {
+                return new Enumerator(parent, cancellationToken, false);
+            }
+        }
+
+        sealed class Enumerator : MoveNextSource, IUniTaskAsyncEnumerator<T>, ITriggerHandler<T>
         {
             static Action<object> cancellationCallback = CancellationCallback;
 
@@ -62,11 +101,13 @@ namespace Cysharp.Threading.Tasks
             readonly CancellationTokenRegistration cancellationTokenRegistration;
             T value;
             bool isDisposed;
+            bool firstCall;
 
-            public Enumerator(AsyncReactiveProperty<T> parent, CancellationToken cancellationToken)
+            public Enumerator(AsyncReactiveProperty<T> parent, CancellationToken cancellationToken, bool publishCurrentValue)
             {
                 this.parent = parent;
                 this.cancellationToken = cancellationToken;
+                this.firstCall = publishCurrentValue;
 
                 parent.triggerEvent.Add(this);
                 TaskTracker.TrackActiveTask(this, 3);
@@ -81,6 +122,14 @@ namespace Cysharp.Threading.Tasks
 
             public UniTask<bool> MoveNextAsync()
             {
+                // raise latest value on first call.
+                if (firstCall)
+                {
+                    firstCall = false;
+                    value = parent.Value;
+                    return CompletedTasks.True;
+                }
+
                 completionSource.Reset();
                 return new UniTask<bool>(this, completionSource.Version);
             }
@@ -97,17 +146,25 @@ namespace Cysharp.Threading.Tasks
                 return default;
             }
 
-            public bool TrySetResult(T value)
+            public void OnNext(T value)
             {
                 this.value = value;
                 completionSource.TrySetResult(true);
-                return true;
             }
 
-            public bool TrySetCanceled(CancellationToken cancellationToken = default)
+            public void OnCanceled(CancellationToken cancellationToken)
             {
                 DisposeAsync().Forget();
-                return true;
+            }
+
+            public void OnCompleted()
+            {
+                completionSource.TrySetResult(false);
+            }
+
+            public void OnError(Exception ex)
+            {
+                completionSource.TrySetException(ex);
             }
 
             static void CancellationCallback(object state)
@@ -117,4 +174,231 @@ namespace Cysharp.Threading.Tasks
             }
         }
     }
+
+    public class State<T> : IReadOnlyAsyncReactiveProperty<T>, IDisposable
+    {
+        TriggerEvent<T> triggerEvent;
+
+        T latestValue;
+
+        Action<T> setter;
+        IUniTaskAsyncEnumerator<T> enumerator;
+
+        public T Value
+        {
+            get
+            {
+                return latestValue;
+            }
+        }
+
+        public State(T value)
+        {
+            this.latestValue = value;
+            this.triggerEvent = default;
+        }
+
+        public State(T initialValue, IUniTaskAsyncEnumerable<T> source, CancellationToken cancellationToken)
+        {
+            latestValue = initialValue;
+            ConsumeEnumerator(source, cancellationToken).Forget();
+        }
+
+        public State(IUniTaskAsyncEnumerable<T> source, CancellationToken cancellationToken)
+        {
+            ConsumeEnumerator(source, cancellationToken).Forget();
+        }
+
+        async UniTaskVoid ConsumeEnumerator(IUniTaskAsyncEnumerable<T> source, CancellationToken cancellationToken)
+        {
+            enumerator = source.GetAsyncEnumerator(cancellationToken);
+            try
+            {
+                while (await enumerator.MoveNextAsync())
+                {
+                    SetValue(enumerator.Current);
+                }
+            }
+            finally
+            {
+                await enumerator.DisposeAsync();
+                enumerator = null;
+            }
+        }
+
+        public Action<T> GetSetter()
+        {
+            if (enumerator != null)
+            {
+                throw new InvalidOperationException("Can not get setter when create from IUniTaskAsyncEnumerable source.");
+            }
+
+            if (setter != null)
+            {
+                throw new InvalidOperationException("GetSetter can only call once.");
+            }
+
+            setter = SetValue;
+            return setter;
+        }
+
+        void SetValue(T value)
+        {
+            this.latestValue = value;
+            triggerEvent.SetResult(value);
+        }
+
+        public IUniTaskAsyncEnumerable<T> WithoutCurrent()
+        {
+            return new WithoutCurrentEnumerable(this);
+        }
+
+        public IUniTaskAsyncEnumerator<T> GetAsyncEnumerator(CancellationToken cancellationToken)
+        {
+            return new Enumerator(this, cancellationToken, true);
+        }
+
+        public void Dispose()
+        {
+            if (enumerator != null)
+            {
+                enumerator.DisposeAsync().Forget();
+            }
+
+            triggerEvent.SetCompleted();
+        }
+
+        public static implicit operator State<T>(T value)
+        {
+            return new State<T>(value);
+        }
+
+        public static implicit operator T(State<T> value)
+        {
+            return value.Value;
+        }
+
+        public override string ToString()
+        {
+            if (isValueType) return latestValue.ToString();
+            return latestValue?.ToString();
+        }
+
+        static bool isValueType;
+
+        static State()
+        {
+            isValueType = typeof(T).IsValueType;
+        }
+
+        class WithoutCurrentEnumerable : IUniTaskAsyncEnumerable<T>
+        {
+            readonly State<T> parent;
+
+            public WithoutCurrentEnumerable(State<T> parent)
+            {
+                this.parent = parent;
+            }
+
+            public IUniTaskAsyncEnumerator<T> GetAsyncEnumerator(CancellationToken cancellationToken = default)
+            {
+                return new Enumerator(parent, cancellationToken, false);
+            }
+        }
+
+        sealed class Enumerator : MoveNextSource, IUniTaskAsyncEnumerator<T>, ITriggerHandler<T>
+        {
+            static Action<object> cancellationCallback = CancellationCallback;
+
+            readonly State<T> parent;
+            readonly CancellationToken cancellationToken;
+            readonly CancellationTokenRegistration cancellationTokenRegistration;
+            T value;
+            bool isDisposed;
+            bool firstCall;
+
+            public Enumerator(State<T> parent, CancellationToken cancellationToken, bool publishCurrentValue)
+            {
+                this.parent = parent;
+                this.cancellationToken = cancellationToken;
+                this.firstCall = publishCurrentValue;
+
+                parent.triggerEvent.Add(this);
+                TaskTracker.TrackActiveTask(this, 3);
+
+                if (cancellationToken.CanBeCanceled)
+                {
+                    cancellationTokenRegistration = cancellationToken.RegisterWithoutCaptureExecutionContext(cancellationCallback, this);
+                }
+            }
+
+            public T Current => value;
+
+            public UniTask<bool> MoveNextAsync()
+            {
+                // raise latest value on first call.
+                if (firstCall)
+                {
+                    firstCall = false;
+                    value = parent.Value;
+                    return CompletedTasks.True;
+                }
+
+                completionSource.Reset();
+                return new UniTask<bool>(this, completionSource.Version);
+            }
+
+            public UniTask DisposeAsync()
+            {
+                if (!isDisposed)
+                {
+                    isDisposed = true;
+                    TaskTracker.RemoveTracking(this);
+                    completionSource.TrySetCanceled(cancellationToken);
+                    parent.triggerEvent.Remove(this);
+                }
+                return default;
+            }
+
+            public void OnNext(T value)
+            {
+                this.value = value;
+                completionSource.TrySetResult(true);
+            }
+
+            public void OnCanceled(CancellationToken cancellationToken)
+            {
+                DisposeAsync().Forget();
+            }
+
+            public void OnCompleted()
+            {
+                completionSource.TrySetResult(false);
+            }
+
+            public void OnError(Exception ex)
+            {
+                completionSource.TrySetException(ex);
+            }
+
+            static void CancellationCallback(object state)
+            {
+                var self = (Enumerator)state;
+                self.DisposeAsync().Forget();
+            }
+        }
+    }
+
+    public static class StateExtensions
+    {
+        public static State<T> ToState<T>(this IUniTaskAsyncEnumerable<T> source, CancellationToken cancellationToken)
+        {
+            return new State<T>(source, cancellationToken);
+        }
+
+        public static State<T> ToState<T>(this IUniTaskAsyncEnumerable<T> source, T initialValue, CancellationToken cancellationToken)
+        {
+            return new State<T>(initialValue, source, cancellationToken);
+        }
+    }
 }

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

@@ -1,6 +1,7 @@
 #pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
 
 using System;
+using System.Runtime.CompilerServices;
 using System.Threading;
 
 namespace Cysharp.Threading.Tasks
@@ -9,15 +10,15 @@ namespace Cysharp.Threading.Tasks
     {
         static readonly Action<object> cancellationTokenCallback = Callback;
 
-        public static (UniTask, CancellationTokenRegistration) ToUniTask(this CancellationToken cts)
+        public static (UniTask, CancellationTokenRegistration) ToUniTask(this CancellationToken cancellationToken)
         {
-            if (cts.IsCancellationRequested)
+            if (cancellationToken.IsCancellationRequested)
             {
-                return (UniTask.FromCanceled(cts), default(CancellationTokenRegistration));
+                return (UniTask.FromCanceled(cancellationToken), default(CancellationTokenRegistration));
             }
 
             var promise = new UniTaskCompletionSource();
-            return (promise.Task, cts.RegisterWithoutCaptureExecutionContext(cancellationTokenCallback, promise));
+            return (promise.Task, cancellationToken.RegisterWithoutCaptureExecutionContext(cancellationTokenCallback, promise));
         }
 
         static void Callback(object state)
@@ -26,6 +27,11 @@ namespace Cysharp.Threading.Tasks
             promise.TrySetResult();
         }
 
+        public static CancellationTokenAwaitable WaitUntilCanceled(this CancellationToken cancellationToken)
+        {
+            return new CancellationTokenAwaitable(cancellationToken);
+        }
+
         public static CancellationTokenRegistration RegisterWithoutCaptureExecutionContext(this CancellationToken cancellationToken, Action callback)
         {
             var restoreFlow = false;
@@ -70,5 +76,46 @@ namespace Cysharp.Threading.Tasks
             }
         }
     }
+
+    public struct CancellationTokenAwaitable
+    {
+        CancellationToken cancellationToken;
+
+        public CancellationTokenAwaitable(CancellationToken cancellationToken)
+        {
+            this.cancellationToken = cancellationToken;
+        }
+
+        public Awaiter GetAwaiter()
+        {
+            return new Awaiter(cancellationToken);
+        }
+
+        public struct Awaiter : ICriticalNotifyCompletion
+        {
+            CancellationToken cancellationToken;
+
+            public Awaiter(CancellationToken cancellationToken)
+            {
+                this.cancellationToken = cancellationToken;
+            }
+
+            public bool IsCompleted => !cancellationToken.CanBeCanceled || cancellationToken.IsCancellationRequested;
+
+            public void GetResult()
+            {
+            }
+
+            public void OnCompleted(Action continuation)
+            {
+                UnsafeOnCompleted(continuation);
+            }
+
+            public void UnsafeOnCompleted(Action continuation)
+            {
+                cancellationToken.RegisterWithoutCaptureExecutionContext(continuation);
+            }
+        }
+    }
 }
 

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

@@ -0,0 +1,450 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+
+namespace Cysharp.Threading.Tasks
+{
+    public static class Channel
+    {
+        public static Channel<T> CreateSingleConsumerUnbounded<T>()
+        {
+            return new SingleConsumerUnboundedChannel<T>();
+        }
+    }
+
+    public abstract class Channel<TWrite, TRead>
+    {
+        public ChannelReader<TRead> Reader { get; protected set; }
+        public ChannelWriter<TWrite> Writer { get; protected set; }
+
+        public static implicit operator ChannelReader<TRead>(Channel<TWrite, TRead> channel) => channel.Reader;
+        public static implicit operator ChannelWriter<TWrite>(Channel<TWrite, TRead> channel) => channel.Writer;
+    }
+
+    public abstract class Channel<T> : Channel<T, T>
+    {
+    }
+
+    public abstract class ChannelReader<T>
+    {
+        public abstract bool TryRead(out T item);
+        public abstract UniTask<bool> WaitToReadAsync(CancellationToken cancellationToken = default(CancellationToken));
+
+        public abstract UniTask Completion { get; }
+
+        public virtual UniTask<T> ReadAsync(CancellationToken cancellationToken = default(CancellationToken))
+        {
+            if (this.TryRead(out var item))
+            {
+                return UniTask.FromResult(item);
+            }
+
+            return ReadAsyncCore(cancellationToken);
+        }
+
+        async UniTask<T> ReadAsyncCore(CancellationToken cancellationToken = default(CancellationToken))
+        {
+            if (await WaitToReadAsync(cancellationToken))
+            {
+                if (TryRead(out var item))
+                {
+                    return item;
+                }
+            }
+
+            throw new ChannelClosedException();
+        }
+
+        public abstract IUniTaskAsyncEnumerable<T> ReadAllAsync(CancellationToken cancellationToken = default(CancellationToken));
+    }
+
+    public abstract class ChannelWriter<T>
+    {
+        public abstract bool TryWrite(T item);
+        public abstract bool TryComplete(Exception error = null);
+
+        public void Complete(Exception error = null)
+        {
+            if (!TryComplete(error))
+            {
+                throw new ChannelClosedException();
+            }
+        }
+    }
+
+    public partial class ChannelClosedException : InvalidOperationException
+    {
+        public ChannelClosedException() :
+            base("Channel is already closed.")
+        { }
+
+        public ChannelClosedException(string message) : base(message) { }
+
+        public ChannelClosedException(Exception innerException) :
+            base("Channel is already closed", innerException)
+        { }
+
+        public ChannelClosedException(string message, Exception innerException) : base(message, innerException) { }
+    }
+
+    internal class SingleConsumerUnboundedChannel<T> : Channel<T>
+    {
+        readonly Queue<T> items;
+        readonly SingleConsumerUnboundedChannelReader readerSource;
+        UniTaskCompletionSource completedTaskSource;
+        UniTask completedTask;
+
+        Exception completionError;
+        bool closed;
+
+        public SingleConsumerUnboundedChannel()
+        {
+            items = new Queue<T>();
+            Writer = new SingleConsumerUnboundedChannelWriter(this);
+            readerSource = new SingleConsumerUnboundedChannelReader(this);
+            Reader = readerSource;
+        }
+
+        sealed class SingleConsumerUnboundedChannelWriter : ChannelWriter<T>
+        {
+            readonly SingleConsumerUnboundedChannel<T> parent;
+
+            public SingleConsumerUnboundedChannelWriter(SingleConsumerUnboundedChannel<T> parent)
+            {
+                this.parent = parent;
+            }
+
+            public override bool TryWrite(T item)
+            {
+                bool waiting;
+                lock (parent.items)
+                {
+                    if (parent.closed) return false;
+
+                    parent.items.Enqueue(item);
+                    waiting = parent.readerSource.isWaiting;
+                }
+
+                if (waiting)
+                {
+                    parent.readerSource.SingalContinuation();
+                }
+
+                return true;
+            }
+
+            public override bool TryComplete(Exception error = null)
+            {
+                bool waiting;
+                lock (parent.items)
+                {
+                    if (parent.closed) return false;
+                    parent.closed = true;
+                    waiting = parent.readerSource.isWaiting;
+
+                    if (parent.items.Count == 0)
+                    {
+                        if (error == null)
+                        {
+                            if (parent.completedTaskSource != null)
+                            {
+                                parent.completedTaskSource.TrySetResult();
+                            }
+                            else
+                            {
+                                parent.completedTask = UniTask.CompletedTask;
+                            }
+                        }
+                        else
+                        {
+                            if (parent.completedTaskSource != null)
+                            {
+                                parent.completedTaskSource.TrySetException(error);
+                            }
+                            else
+                            {
+                                parent.completedTask = UniTask.FromException(error);
+                            }
+                        }
+
+                        if (waiting)
+                        {
+                            parent.readerSource.SingalCompleted(error);
+                        }
+                    }
+
+                    parent.completionError = error;
+                }
+
+                return true;
+            }
+        }
+
+        sealed class SingleConsumerUnboundedChannelReader : ChannelReader<T>, IUniTaskSource<bool>
+        {
+            readonly Action<object> CancellationCallbackDelegate = CancellationCallback;
+            readonly SingleConsumerUnboundedChannel<T> parent;
+
+            CancellationToken cancellationToken;
+            CancellationTokenRegistration cancellationTokenRegistration;
+            UniTaskCompletionSourceCore<bool> core;
+            internal bool isWaiting;
+
+            public SingleConsumerUnboundedChannelReader(SingleConsumerUnboundedChannel<T> parent)
+            {
+                this.parent = parent;
+
+                TaskTracker.TrackActiveTask(this, 4);
+            }
+
+            public override UniTask Completion
+            {
+                get
+                {
+                    if (parent.completedTaskSource != null) return parent.completedTaskSource.Task;
+
+                    if (parent.closed)
+                    {
+                        return parent.completedTask;
+                    }
+
+                    parent.completedTaskSource = new UniTaskCompletionSource();
+                    return parent.completedTaskSource.Task;
+                }
+            }
+
+            public override bool TryRead(out T item)
+            {
+                lock (parent.items)
+                {
+                    if (parent.items.Count != 0)
+                    {
+                        item = parent.items.Dequeue();
+
+                        // complete when all value was consumed.
+                        if (parent.closed && parent.items.Count == 0)
+                        {
+                            if (parent.completionError != null)
+                            {
+                                if (parent.completedTaskSource != null)
+                                {
+                                    parent.completedTaskSource.TrySetException(parent.completionError);
+                                }
+                                else
+                                {
+                                    parent.completedTask = UniTask.FromException(parent.completionError);
+                                }
+                            }
+                            else
+                            {
+                                if (parent.completedTaskSource != null)
+                                {
+                                    parent.completedTaskSource.TrySetResult();
+                                }
+                                else
+                                {
+                                    parent.completedTask = UniTask.CompletedTask;
+                                }
+                            }
+                        }
+                    }
+                    else
+                    {
+                        item = default;
+                        return false;
+                    }
+                }
+
+                return true;
+            }
+
+            public override UniTask<bool> WaitToReadAsync(CancellationToken cancellationToken)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return UniTask.FromCanceled<bool>(cancellationToken);
+                }
+
+                lock (parent.items)
+                {
+                    if (parent.items.Count != 0)
+                    {
+                        return CompletedTasks.True;
+                    }
+
+                    if (parent.closed)
+                    {
+                        if (parent.completionError == null)
+                        {
+                            return CompletedTasks.False;
+                        }
+                        else
+                        {
+                            return UniTask.FromException<bool>(parent.completionError);
+                        }
+                    }
+
+                    cancellationTokenRegistration.Dispose();
+
+                    core.Reset();
+                    isWaiting = true;
+
+                    this.cancellationToken = cancellationToken;
+                    if (this.cancellationToken.CanBeCanceled)
+                    {
+                        cancellationTokenRegistration = this.cancellationToken.RegisterWithoutCaptureExecutionContext(CancellationCallbackDelegate, this);
+                    }
+
+                    return new UniTask<bool>(this, core.Version);
+                }
+            }
+
+            public void SingalContinuation()
+            {
+                core.TrySetResult(true);
+            }
+
+            public void SingalCancellation(CancellationToken cancellationToken)
+            {
+                TaskTracker.RemoveTracking(this);
+                core.TrySetCanceled(cancellationToken);
+            }
+
+            public void SingalCompleted(Exception error)
+            {
+                if (error != null)
+                {
+                    TaskTracker.RemoveTracking(this);
+                    core.TrySetException(error);
+                }
+                else
+                {
+                    TaskTracker.RemoveTracking(this);
+                    core.TrySetResult(false);
+                }
+            }
+
+            public override IUniTaskAsyncEnumerable<T> ReadAllAsync(CancellationToken cancellationToken = default)
+            {
+                return new ReadAllAsyncEnumerable(this, cancellationToken);
+            }
+
+            bool IUniTaskSource<bool>.GetResult(short token)
+            {
+                return core.GetResult(token);
+            }
+
+            void IUniTaskSource.GetResult(short token)
+            {
+                core.GetResult(token);
+            }
+
+            UniTaskStatus IUniTaskSource.GetStatus(short token)
+            {
+                return core.GetStatus(token);
+            }
+
+            void IUniTaskSource.OnCompleted(Action<object> continuation, object state, short token)
+            {
+                core.OnCompleted(continuation, state, token);
+            }
+
+            UniTaskStatus IUniTaskSource.UnsafeGetStatus()
+            {
+                return core.UnsafeGetStatus();
+            }
+
+            static void CancellationCallback(object state)
+            {
+                var self = (SingleConsumerUnboundedChannelReader)state;
+                self.SingalCancellation(self.cancellationToken);
+            }
+
+            sealed class ReadAllAsyncEnumerable : IUniTaskAsyncEnumerable<T>, IUniTaskAsyncEnumerator<T>
+            {
+                readonly Action<object> CancellationCallback1Delegate = CancellationCallback1;
+                readonly Action<object> CancellationCallback2Delegate = CancellationCallback2;
+
+                readonly SingleConsumerUnboundedChannelReader parent;
+                CancellationToken cancellationToken1;
+                CancellationToken cancellationToken2;
+                CancellationTokenRegistration CancellationTokenRegistration1;
+                CancellationTokenRegistration CancellationTokenRegistration2;
+
+                T current;
+                bool cacheValue;
+                bool running;
+
+                public ReadAllAsyncEnumerable(SingleConsumerUnboundedChannelReader parent, CancellationToken cancellationToken)
+                {
+                    this.parent = parent;
+                    this.cancellationToken1 = cancellationToken;
+                }
+
+                public IUniTaskAsyncEnumerator<T> GetAsyncEnumerator(CancellationToken cancellationToken = default)
+                {
+                    if (running)
+                    {
+                        throw new InvalidOperationException("Enumerator is already running, does not allow call GetAsyncEnumerator twice.");
+                    }
+
+                    if (this.cancellationToken1 != cancellationToken)
+                    {
+                        this.cancellationToken2 = cancellationToken;
+                    }
+
+                    if (this.cancellationToken1.CanBeCanceled)
+                    {
+                        this.cancellationToken1.RegisterWithoutCaptureExecutionContext(CancellationCallback1Delegate, this);
+                    }
+
+                    if (this.cancellationToken2.CanBeCanceled)
+                    {
+                        this.cancellationToken2.RegisterWithoutCaptureExecutionContext(CancellationCallback2Delegate, this);
+                    }
+
+                    running = true;
+                    return this;
+                }
+
+                public T Current
+                {
+                    get
+                    {
+                        if (cacheValue)
+                        {
+                            return current;
+                        }
+                        parent.TryRead(out current);
+                        return current;
+                    }
+                }
+
+                public UniTask<bool> MoveNextAsync()
+                {
+                    cacheValue = false;
+                    return parent.WaitToReadAsync(CancellationToken.None); // ok to use None, registered in ctor.
+                }
+
+                public UniTask DisposeAsync()
+                {
+                    CancellationTokenRegistration1.Dispose();
+                    CancellationTokenRegistration2.Dispose();
+                    return default;
+                }
+
+                static void CancellationCallback1(object state)
+                {
+                    var self = (ReadAllAsyncEnumerable)state;
+                    self.parent.SingalCancellation(self.cancellationToken1);
+                }
+
+                static void CancellationCallback2(object state)
+                {
+                    var self = (ReadAllAsyncEnumerable)state;
+                    self.parent.SingalCancellation(self.cancellationToken2);
+                }
+            }
+        }
+    }
+}

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

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 5ceb3107bbdd1f14eb39091273798360
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

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

@@ -28,6 +28,12 @@ namespace Cysharp.Threading.Tasks
         IUniTaskOrderedAsyncEnumerable<TElement> CreateOrderedEnumerable<TKey>(Func<TElement, CancellationToken, UniTask<TKey>> keySelector, IComparer<TKey> comparer, bool descending);
     }
 
+    public interface IConnectableUniTaskAsyncEnumerable<out T> : IUniTaskAsyncEnumerable<T>
+    {
+        IDisposable Connect();
+    }
+
+    // don't use AsyncGrouping.
     //public interface IUniTaskAsyncGrouping<out TKey, out TElement> : IUniTaskAsyncEnumerable<TElement>
     //{
     //    TKey Key { get; }

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

@@ -65,6 +65,8 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.element = element;
                 this.state = append ? State.RequireAppend : State.RequirePrepend;
                 this.cancellationToken = cancellationToken;
+
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TSource Current { get; private set; }
@@ -136,6 +138,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (enumerator != null)
                 {
                     return enumerator.DisposeAsync();

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

@@ -76,6 +76,7 @@ namespace Cysharp.Threading.Tasks.Linq
         {
             this.source = source;
             this.cancellationToken = cancellationToken;
+            TaskTracker.TrackActiveTask(this, 4);
         }
 
         // abstract
@@ -178,6 +179,7 @@ namespace Cysharp.Threading.Tasks.Linq
         // if require additional resource to dispose, override and call base.DisposeAsync.
         public virtual UniTask DisposeAsync()
         {
+            TaskTracker.RemoveTracking(this);
             if (enumerator != null)
             {
                 return enumerator.DisposeAsync();
@@ -204,6 +206,7 @@ namespace Cysharp.Threading.Tasks.Linq
         {
             this.source = source;
             this.cancellationToken = cancellationToken;
+            TaskTracker.TrackActiveTask(this, 4);
         }
 
         // abstract
@@ -399,6 +402,7 @@ namespace Cysharp.Threading.Tasks.Linq
         // if require additional resource to dispose, override and call base.DisposeAsync.
         public virtual UniTask DisposeAsync()
         {
+            TaskTracker.RemoveTracking(this);
             if (enumerator != null)
             {
                 return enumerator.DisposeAsync();

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

@@ -61,6 +61,8 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.source = source;
                 this.count = count;
                 this.cancellationToken = cancellationToken;
+
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public IList<TSource> Current { get; private set; }
@@ -167,6 +169,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (enumerator != null)
                 {
                     return enumerator.DisposeAsync();
@@ -217,6 +220,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.count = count;
                 this.skip = skip;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public IList<TSource> Current { get; private set; }
@@ -329,6 +333,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (enumerator != null)
                 {
                     return enumerator.DisposeAsync();

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

@@ -57,6 +57,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.second = second;
                 this.cancellationToken = cancellationToken;
                 this.iteratingState = IteratingState.IteratingFirst;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TSource Current { get; private set; }
@@ -150,6 +151,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (enumerator != null)
                 {
                     return enumerator.DisposeAsync();

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

@@ -63,6 +63,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.cancellationToken = cancellationToken;
 
                 this.iteratingState = IteratingState.Empty;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TSource Current { get; private set; }
@@ -128,6 +129,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (enumerator != null)
                 {
                     return enumerator.DisposeAsync();

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

@@ -124,6 +124,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.onError = onError;
                 this.onCompleted = onCompleted;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TSource Current { get; private set; }
@@ -244,6 +245,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (enumerator != null)
                 {
                     return enumerator.DisposeAsync();

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

@@ -22,6 +22,22 @@ namespace Cysharp.Threading.Tasks.Linq
             return Cysharp.Threading.Tasks.Linq.ForEach.ForEachAsync(source, action, cancellationToken);
         }
 
+        /// <summary>Obsolete(Error), Use Use ForEachAwaitAsync instead.</summary>
+        [Obsolete("Use ForEachAwaitAsync instead.", true)]
+        [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+        public static UniTask ForEachAsync<T>(this IUniTaskAsyncEnumerable<T> source, Func<T, UniTask> action, CancellationToken cancellationToken = default)
+        {
+            throw new NotSupportedException("Use ForEachAwaitAsync instead.");
+        }
+
+        /// <summary>Obsolete(Error), Use Use ForEachAwaitAsync instead.</summary>
+        [Obsolete("Use ForEachAwaitAsync instead.", true)]
+        [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+        public static UniTask ForEachAsync<T>(this IUniTaskAsyncEnumerable<T> source, Func<T, int, UniTask> action, CancellationToken cancellationToken = default)
+        {
+            throw new NotSupportedException("Use ForEachAwaitAsync instead.");
+        }
+
         public static UniTask ForEachAwaitAsync<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, UniTask> action, CancellationToken cancellationToken = default)
         {
             Error.ThrowArgumentNullException(source, nameof(source));

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

@@ -255,6 +255,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.elementSelector = elementSelector;
                 this.comparer = comparer;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public IGrouping<TKey, TElement> Current { get; private set; }
@@ -313,6 +314,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (groupEnumerator != null)
                 {
                     groupEnumerator.Dispose();
@@ -364,6 +366,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.resultSelector = resultSelector;
                 this.comparer = comparer;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -423,6 +426,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (groupEnumerator != null)
                 {
                     groupEnumerator.Dispose();
@@ -470,6 +474,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.elementSelector = elementSelector;
                 this.comparer = comparer;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public IGrouping<TKey, TElement> Current { get; private set; }
@@ -528,6 +533,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (groupEnumerator != null)
                 {
                     groupEnumerator.Dispose();
@@ -582,6 +588,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.resultSelector = resultSelector;
                 this.comparer = comparer;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -661,6 +668,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (groupEnumerator != null)
                 {
                     groupEnumerator.Dispose();
@@ -708,6 +716,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.elementSelector = elementSelector;
                 this.comparer = comparer;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public IGrouping<TKey, TElement> Current { get; private set; }
@@ -766,6 +775,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (groupEnumerator != null)
                 {
                     groupEnumerator.Dispose();
@@ -820,6 +830,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.resultSelector = resultSelector;
                 this.comparer = comparer;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -899,6 +910,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (groupEnumerator != null)
                 {
                     groupEnumerator.Dispose();

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

@@ -129,6 +129,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.resultSelector = resultSelector;
                 this.comparer = comparer;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -208,6 +209,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (enumerator != null)
                 {
                     return enumerator.DisposeAsync();
@@ -273,6 +275,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.resultSelector = resultSelector;
                 this.comparer = comparer;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -401,6 +404,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (enumerator != null)
                 {
                     return enumerator.DisposeAsync();
@@ -466,6 +470,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.resultSelector = resultSelector;
                 this.comparer = comparer;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -594,6 +599,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (enumerator != null)
                 {
                     return enumerator.DisposeAsync();

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

@@ -131,6 +131,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.resultSelector = resultSelector;
                 this.comparer = comparer;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -248,6 +249,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (valueEnumerator != null)
                 {
                     valueEnumerator.Dispose();
@@ -321,6 +323,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.resultSelector = resultSelector;
                 this.comparer = comparer;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -476,6 +479,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (valueEnumerator != null)
                 {
                     valueEnumerator.Dispose();
@@ -549,6 +553,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.resultSelector = resultSelector;
                 this.comparer = comparer;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -704,6 +709,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (valueEnumerator != null)
                 {
                     valueEnumerator.Dispose();

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

@@ -422,6 +422,7 @@ namespace Cysharp.Threading.Tasks.Linq
             {
                 this.parent = parent;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TElement Current { get; private set; }
@@ -477,6 +478,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 return default;
             }
         }

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

@@ -0,0 +1,171 @@
+using Cysharp.Threading.Tasks.Internal;
+using System;
+using System.Threading;
+
+namespace Cysharp.Threading.Tasks.Linq
+{
+    public static partial class UniTaskAsyncEnumerable
+    {
+        public static IConnectableUniTaskAsyncEnumerable<TSource> Publish<TSource>(this IUniTaskAsyncEnumerable<TSource> source)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+
+            return new Publish<TSource>(source);
+        }
+    }
+
+    internal sealed class Publish<TSource> : IConnectableUniTaskAsyncEnumerable<TSource>
+    {
+        readonly IUniTaskAsyncEnumerable<TSource> source;
+        readonly CancellationTokenSource cancellationTokenSource;
+
+        TriggerEvent<TSource> trigger;
+        IUniTaskAsyncEnumerator<TSource> enumerator;
+        IDisposable connectedDisposable;
+        bool isCompleted;
+
+        public Publish(IUniTaskAsyncEnumerable<TSource> source)
+        {
+            this.source = source;
+            this.cancellationTokenSource = new CancellationTokenSource();
+        }
+
+        public IDisposable Connect()
+        {
+            if (connectedDisposable != null) return connectedDisposable;
+
+            if (enumerator == null)
+            {
+                enumerator = source.GetAsyncEnumerator(cancellationTokenSource.Token);
+            }
+
+            ConsumeEnumerator().Forget();
+
+            connectedDisposable = new ConnectDisposable(cancellationTokenSource);
+            return connectedDisposable;
+        }
+
+        async UniTaskVoid ConsumeEnumerator()
+        {
+            try
+            {
+                try
+                {
+                    while (await enumerator.MoveNextAsync())
+                    {
+                        trigger.SetResult(enumerator.Current);
+                    }
+                    trigger.SetCompleted();
+                }
+                catch (Exception ex)
+                {
+                    trigger.SetError(ex);
+                }
+            }
+            finally
+            {
+                isCompleted = true;
+                await enumerator.DisposeAsync();
+            }
+        }
+
+        public IUniTaskAsyncEnumerator<TSource> GetAsyncEnumerator(CancellationToken cancellationToken = default)
+        {
+            return new _Publish(this, cancellationToken);
+        }
+
+        sealed class ConnectDisposable : IDisposable
+        {
+            readonly CancellationTokenSource cancellationTokenSource;
+
+            public ConnectDisposable(CancellationTokenSource cancellationTokenSource)
+            {
+                this.cancellationTokenSource = cancellationTokenSource;
+            }
+
+            public void Dispose()
+            {
+                this.cancellationTokenSource.Cancel();
+            }
+        }
+
+        sealed class _Publish : MoveNextSource, IUniTaskAsyncEnumerator<TSource>, ITriggerHandler<TSource>
+        {
+            static readonly Action<object> CancelDelegate = OnCanceled;
+
+            readonly Publish<TSource> parent;
+            CancellationToken cancellationToken;
+            CancellationTokenRegistration cancellationTokenRegistration;
+            bool isDisposed;
+
+            public _Publish(Publish<TSource> parent, CancellationToken cancellationToken)
+            {
+                if (cancellationToken.IsCancellationRequested) return;
+
+                this.parent = parent;
+                this.cancellationToken = cancellationToken;
+
+                if (cancellationToken.CanBeCanceled)
+                {
+                    this.cancellationTokenRegistration = cancellationToken.RegisterWithoutCaptureExecutionContext(CancelDelegate, this);
+                }
+
+                parent.trigger.Add(this);
+                TaskTracker.TrackActiveTask(this, 3);
+            }
+
+            public TSource Current { get; private set; }
+
+            public UniTask<bool> MoveNextAsync()
+            {
+                cancellationToken.ThrowIfCancellationRequested();
+
+                if (parent.isCompleted) return CompletedTasks.False;
+
+                completionSource.Reset();
+                return new UniTask<bool>(this, completionSource.Version);
+            }
+
+            static void OnCanceled(object state)
+            {
+                var self = (_Publish)state;
+                self.completionSource.TrySetCanceled(self.cancellationToken);
+                self.DisposeAsync().Forget();
+            }
+
+            public UniTask DisposeAsync()
+            {
+                if (!isDisposed)
+                {
+                    isDisposed = true;
+                    TaskTracker.RemoveTracking(this);
+                    cancellationTokenRegistration.Dispose();
+                    parent.trigger.Remove(this);
+                }
+
+                return default;
+            }
+
+            public void OnNext(TSource value)
+            {
+                Current = value;
+                completionSource.TrySetResult(true);
+            }
+
+            public void OnCanceled(CancellationToken cancellationToken)
+            {
+                completionSource.TrySetCanceled(cancellationToken);
+            }
+
+            public void OnCompleted()
+            {
+                completionSource.TrySetResult(false);
+            }
+
+            public void OnError(Exception ex)
+            {
+                completionSource.TrySetException(ex);
+            }
+        }
+    }
+}

src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/Publish.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 93c684d1e88c09d4e89b79437d97b810
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

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

@@ -0,0 +1,103 @@
+using System;
+using System.Threading;
+
+namespace Cysharp.Threading.Tasks.Linq
+{
+    public static partial class UniTaskAsyncEnumerable
+    {
+        public static IUniTaskAsyncEnumerable<TSource> Queue<TSource>(this IUniTaskAsyncEnumerable<TSource> source)
+        {
+            return new QueueOperator<TSource>(source);
+        }
+    }
+
+    internal sealed class QueueOperator<TSource> : IUniTaskAsyncEnumerable<TSource>
+    {
+        readonly IUniTaskAsyncEnumerable<TSource> source;
+
+        public QueueOperator(IUniTaskAsyncEnumerable<TSource> source)
+        {
+            this.source = source;
+        }
+
+        public IUniTaskAsyncEnumerator<TSource> GetAsyncEnumerator(CancellationToken cancellationToken = default)
+        {
+            return new _Queue(source, cancellationToken);
+        }
+
+        sealed class _Queue : IUniTaskAsyncEnumerator<TSource>
+        {
+            readonly IUniTaskAsyncEnumerable<TSource> source;
+            CancellationToken cancellationToken;
+
+            Channel<TSource> channel;
+            IUniTaskAsyncEnumerator<TSource> channelEnumerator;
+            IUniTaskAsyncEnumerator<TSource> sourceEnumerator;
+            bool channelClosed;
+
+            public _Queue(IUniTaskAsyncEnumerable<TSource> source, CancellationToken cancellationToken)
+            {
+                this.source = source;
+                this.cancellationToken = cancellationToken;
+            }
+
+            public TSource Current => channelEnumerator.Current;
+
+            public UniTask<bool> MoveNextAsync()
+            {
+                cancellationToken.ThrowIfCancellationRequested();
+
+                if (sourceEnumerator == null)
+                {
+                    sourceEnumerator = source.GetAsyncEnumerator(cancellationToken);
+                    channel = Channel.CreateSingleConsumerUnbounded<TSource>();
+
+                    channelEnumerator = channel.Reader.ReadAllAsync().GetAsyncEnumerator(cancellationToken);
+
+                    ConsumeAll(this, sourceEnumerator, channel).Forget();
+                }
+
+                return channelEnumerator.MoveNextAsync();
+            }
+
+            static async UniTaskVoid ConsumeAll(_Queue self, IUniTaskAsyncEnumerator<TSource> enumerator, ChannelWriter<TSource> writer)
+            {
+                try
+                {
+                    while (await enumerator.MoveNextAsync())
+                    {
+                        writer.TryWrite(enumerator.Current);
+                    }
+                    writer.TryComplete();
+                }
+                catch (Exception ex)
+                {
+                    writer.TryComplete(ex);
+                }
+                finally
+                {
+                    self.channelClosed = true;
+                    await enumerator.DisposeAsync();
+                }
+            }
+
+            public async UniTask DisposeAsync()
+            {
+                if (sourceEnumerator != null)
+                {
+                    await sourceEnumerator.DisposeAsync();
+                }
+                if (channelEnumerator != null)
+                {
+                    await channelEnumerator.DisposeAsync();
+                }
+
+                if (!channelClosed)
+                {
+                    channelClosed = true;
+                    channel.Writer.TryComplete(new OperationCanceledException());
+                }
+            }
+        }
+    }
+}

src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/Queue.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: b7ea1bcf9dbebb042bc99c7816249e02
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

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

@@ -40,6 +40,7 @@ namespace Cysharp.Threading.Tasks.Linq
             {
                 this.source = source;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TSource Current { get; private set; }
@@ -69,6 +70,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 return default;
             }
         }

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

@@ -160,6 +160,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.selector2 = selector2;
                 this.resultSelector = resultSelector;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -324,6 +325,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public async UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (selectedEnumerator != null)
                 {
                     await selectedEnumerator.DisposeAsync();
@@ -398,6 +400,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.selector2 = selector2;
                 this.resultSelector = resultSelector;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -598,6 +601,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public async UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (selectedEnumerator != null)
                 {
                     await selectedEnumerator.DisposeAsync();
@@ -672,6 +676,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.selector2 = selector2;
                 this.resultSelector = resultSelector;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -872,6 +877,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public async UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (selectedEnumerator != null)
                 {
                     await selectedEnumerator.DisposeAsync();

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

@@ -56,6 +56,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.source = source;
                 this.count = count;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TSource Current { get; private set; }
@@ -146,6 +147,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (enumerator != null)
                 {
                     return enumerator.DisposeAsync();

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

@@ -0,0 +1,144 @@
+using Cysharp.Threading.Tasks.Internal;
+using System;
+using System.Threading;
+
+namespace Cysharp.Threading.Tasks.Linq
+{
+    public static partial class UniTaskAsyncEnumerable
+    {
+        public static IUniTaskAsyncEnumerable<TSource> SkipUntilCanceled<TSource>(this IUniTaskAsyncEnumerable<TSource> source, CancellationToken cancellationToken)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+
+            return new SkipUntilCanceled<TSource>(source, cancellationToken);
+        }
+    }
+
+    internal sealed class SkipUntilCanceled<TSource> : IUniTaskAsyncEnumerable<TSource>
+    {
+        readonly IUniTaskAsyncEnumerable<TSource> source;
+        readonly CancellationToken cancellationToken;
+
+        public SkipUntilCanceled(IUniTaskAsyncEnumerable<TSource> source, CancellationToken cancellationToken)
+        {
+            this.source = source;
+            this.cancellationToken = cancellationToken;
+        }
+
+        public IUniTaskAsyncEnumerator<TSource> GetAsyncEnumerator(CancellationToken cancellationToken = default)
+        {
+            return new _SkipUntilCanceled(source, this.cancellationToken, cancellationToken);
+        }
+
+        sealed class _SkipUntilCanceled : MoveNextSource, IUniTaskAsyncEnumerator<TSource>
+        {
+            static readonly Action<object> MoveNextCoreDelegate = MoveNextCore;
+
+            readonly IUniTaskAsyncEnumerable<TSource> source;
+            CancellationToken cancellationToken1;
+            CancellationToken cancellationToken2;
+
+            bool isCanceled;
+            IUniTaskAsyncEnumerator<TSource> enumerator;
+            UniTask<bool>.Awaiter awaiter;
+            bool continueNext;
+
+            public _SkipUntilCanceled(IUniTaskAsyncEnumerable<TSource> source, CancellationToken cancellationToken1, CancellationToken cancellationToken2)
+            {
+                this.source = source;
+                this.cancellationToken1 = cancellationToken1;
+                this.cancellationToken2 = cancellationToken2;
+                TaskTracker.TrackActiveTask(this, 3);
+            }
+
+            public TSource Current { get; private set; }
+
+            public UniTask<bool> MoveNextAsync()
+            {
+                if (cancellationToken1.IsCancellationRequested) isCanceled = true;
+                if (cancellationToken2.IsCancellationRequested) isCanceled = true;
+
+                if (enumerator == null)
+                {
+                    enumerator = source.GetAsyncEnumerator(cancellationToken2); // use only AsyncEnumerator provided token.
+                }
+                completionSource.Reset();
+                SourceMoveNext();
+                return new UniTask<bool>(this, completionSource.Version);
+            }
+
+            void SourceMoveNext()
+            {
+                try
+                {
+                    LOOP:
+                    awaiter = enumerator.MoveNextAsync().GetAwaiter();
+                    if (awaiter.IsCompleted)
+                    {
+                        continueNext = true;
+                        MoveNextCore(this);
+                        if (continueNext)
+                        {
+                            continueNext = false;
+                            goto LOOP;
+                        }
+                    }
+                    else
+                    {
+                        awaiter.SourceOnCompleted(MoveNextCoreDelegate, this);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    completionSource.TrySetException(ex);
+                }
+            }
+
+            static void MoveNextCore(object state)
+            {
+                var self = (_SkipUntilCanceled)state;
+
+                if (self.TryGetResult(self.awaiter, out var result))
+                {
+                    if (result)
+                    {
+                        AGAIN:
+
+                        if (self.isCanceled)
+                        {
+                            self.continueNext = false;
+                            self.Current = self.enumerator.Current;
+                            self.completionSource.TrySetResult(true);
+                        }
+                        else
+                        {
+                            if (self.cancellationToken1.IsCancellationRequested) self.isCanceled = true;
+                            if (self.cancellationToken2.IsCancellationRequested) self.isCanceled = true;
+
+                            if (self.isCanceled) goto AGAIN;
+
+                            if (!self.continueNext)
+                            {
+                                self.SourceMoveNext();
+                            }
+                        }
+                    }
+                    else
+                    {
+                        self.completionSource.TrySetResult(false);
+                    }
+                }
+            }
+
+            public UniTask DisposeAsync()
+            {
+                TaskTracker.RemoveTracking(this);
+                if (enumerator != null)
+                {
+                    return enumerator.DisposeAsync();
+                }
+                return default;
+            }
+        }
+    }
+}

src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/SkipUntilCanceled.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 4b1a778aef7150d47b93a49aa1bc34ae
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

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

@@ -30,40 +30,95 @@ namespace Cysharp.Threading.Tasks.Linq
             return new _Take(source, count, cancellationToken);
         }
 
-        sealed class _Take : AsyncEnumeratorBase<TSource, TSource>
+        sealed class _Take : MoveNextSource, IUniTaskAsyncEnumerator<TSource>
         {
-            readonly int count;
+            static readonly Action<object> MoveNextCoreDelegate = MoveNextCore;
 
+            readonly IUniTaskAsyncEnumerable<TSource> source;
+            readonly int count;
+            CancellationToken cancellationToken;
+
+            IUniTaskAsyncEnumerator<TSource> enumerator;
+            UniTask<bool>.Awaiter awaiter;
             int index;
 
             public _Take(IUniTaskAsyncEnumerable<TSource> source, int count, CancellationToken cancellationToken)
-                : base(source, cancellationToken)
             {
+                this.source = source;
                 this.count = count;
+                this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
-            protected override bool TryMoveNextCore(bool sourceHasCurrent, out bool result)
+            public TSource Current { get; private set; }
+
+            public UniTask<bool> MoveNextAsync()
             {
-                if (sourceHasCurrent)
+                cancellationToken.ThrowIfCancellationRequested();
+
+                if (enumerator == null)
                 {
-                    if (checked(index++) < count)
+                    enumerator = source.GetAsyncEnumerator(cancellationToken);
+                }
+
+                if (checked(index) >= count)
+                {
+                    return CompletedTasks.False;
+                }
+
+                completionSource.Reset();
+                SourceMoveNext();
+                return new UniTask<bool>(this, completionSource.Version);
+            }
+
+            void SourceMoveNext()
+            {
+                try
+                {
+                    awaiter = enumerator.MoveNextAsync().GetAwaiter();
+                    if (awaiter.IsCompleted)
                     {
-                        Current = SourceCurrent;
+                        MoveNextCore(this);
-                        result = true;
-                        return true;
                     }
                     else
                     {
-                        result = false;
+                        awaiter.SourceOnCompleted(MoveNextCoreDelegate, this);
-                        return true;
                     }
                 }
-                else
+                catch (Exception ex)
                 {
-                    result = false;
+                    completionSource.TrySetException(ex);
-                    return true;
                 }
             }
+
+            static void MoveNextCore(object state)
+            {
+                var self = (_Take)state;
+
+                if (self.TryGetResult(self.awaiter, out var result))
+                {
+                    if (result)
+                    {
+                        self.index++;
+                        self.Current = self.enumerator.Current;
+                        self.completionSource.TrySetResult(true);
+                    }
+                    else
+                    {
+                        self.completionSource.TrySetResult(false);
+                    }
+                }
+            }
+
+            public UniTask DisposeAsync()
+            {
+                TaskTracker.RemoveTracking(this);
+                if (enumerator != null)
+                {
+                    return enumerator.DisposeAsync();
+                }
+                return default;
+            }
         }
     }
 }

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

@@ -57,6 +57,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.source = source;
                 this.count = count;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TSource Current { get; private set; }
@@ -162,6 +163,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (enumerator != null)
                 {
                     return enumerator.DisposeAsync();

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

@@ -0,0 +1,164 @@
+using Cysharp.Threading.Tasks.Internal;
+using System;
+using System.Threading;
+
+namespace Cysharp.Threading.Tasks.Linq
+{
+    public static partial class UniTaskAsyncEnumerable
+    {
+        public static IUniTaskAsyncEnumerable<TSource> TakeUntilCanceled<TSource>(this IUniTaskAsyncEnumerable<TSource> source, CancellationToken cancellationToken)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+
+            return new TakeUntilCanceled<TSource>(source, cancellationToken);
+        }
+    }
+
+    internal sealed class TakeUntilCanceled<TSource> : IUniTaskAsyncEnumerable<TSource>
+    {
+        readonly IUniTaskAsyncEnumerable<TSource> source;
+        readonly CancellationToken cancellationToken;
+
+        public TakeUntilCanceled(IUniTaskAsyncEnumerable<TSource> source, CancellationToken cancellationToken)
+        {
+            this.source = source;
+            this.cancellationToken = cancellationToken;
+        }
+
+        public IUniTaskAsyncEnumerator<TSource> GetAsyncEnumerator(CancellationToken cancellationToken = default)
+        {
+            return new _TakeUntilCanceled(source, this.cancellationToken, cancellationToken);
+        }
+
+        sealed class _TakeUntilCanceled : MoveNextSource, IUniTaskAsyncEnumerator<TSource>
+        {
+            static readonly Action<object> CancelDelegate1 = OnCanceled1;
+            static readonly Action<object> CancelDelegate2 = OnCanceled2;
+            static readonly Action<object> MoveNextCoreDelegate = MoveNextCore;
+
+            readonly IUniTaskAsyncEnumerable<TSource> source;
+            CancellationToken cancellationToken1;
+            CancellationToken cancellationToken2;
+            CancellationTokenRegistration cancellationTokenRegistration1;
+            CancellationTokenRegistration cancellationTokenRegistration2;
+
+            bool isCanceled;
+            IUniTaskAsyncEnumerator<TSource> enumerator;
+            UniTask<bool>.Awaiter awaiter;
+
+            public _TakeUntilCanceled(IUniTaskAsyncEnumerable<TSource> source, CancellationToken cancellationToken1, CancellationToken cancellationToken2)
+            {
+                this.source = source;
+                this.cancellationToken1 = cancellationToken1;
+                this.cancellationToken2 = cancellationToken2;
+
+                if (cancellationToken1.CanBeCanceled)
+                {
+                    this.cancellationTokenRegistration1 = cancellationToken1.RegisterWithoutCaptureExecutionContext(CancelDelegate1, this);
+                }
+
+                if (cancellationToken1 != cancellationToken2 && cancellationToken2.CanBeCanceled)
+                {
+                    this.cancellationTokenRegistration2 = cancellationToken2.RegisterWithoutCaptureExecutionContext(CancelDelegate2, this);
+                }
+                TaskTracker.TrackActiveTask(this, 3);
+            }
+
+            public TSource Current { get; private set; }
+
+            public UniTask<bool> MoveNextAsync()
+            {
+                if (cancellationToken1.IsCancellationRequested) isCanceled = true;
+                if (cancellationToken2.IsCancellationRequested) isCanceled = true;
+
+                if (enumerator == null)
+                {
+                    enumerator = source.GetAsyncEnumerator(cancellationToken2); // use only AsyncEnumerator provided token.
+                }
+
+                if (isCanceled) return CompletedTasks.False;
+
+                completionSource.Reset();
+                SourceMoveNext();
+                return new UniTask<bool>(this, completionSource.Version);
+            }
+
+            void SourceMoveNext()
+            {
+                try
+                {
+                    awaiter = enumerator.MoveNextAsync().GetAwaiter();
+                    if (awaiter.IsCompleted)
+                    {
+                        MoveNextCore(this);
+                    }
+                    else
+                    {
+                        awaiter.SourceOnCompleted(MoveNextCoreDelegate, this);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    completionSource.TrySetException(ex);
+                }
+            }
+
+            static void MoveNextCore(object state)
+            {
+                var self = (_TakeUntilCanceled)state;
+
+                if (self.TryGetResult(self.awaiter, out var result))
+                {
+                    if (result)
+                    {
+                        if (self.isCanceled)
+                        {
+                            self.completionSource.TrySetResult(false);
+                        }
+                        else
+                        {
+                            self.Current = self.enumerator.Current;
+                            self.completionSource.TrySetResult(true);
+                        }
+                    }
+                    else
+                    {
+                        self.completionSource.TrySetResult(false);
+                    }
+                }
+            }
+
+            static void OnCanceled1(object state)
+            {
+                var self = (_TakeUntilCanceled)state;
+                if (!self.isCanceled)
+                {
+                    self.cancellationTokenRegistration2.Dispose();
+                    self.completionSource.TrySetResult(false);
+                }
+            }
+
+            static void OnCanceled2(object state)
+            {
+                var self = (_TakeUntilCanceled)state;
+                if (!self.isCanceled)
+                {
+                    self.cancellationTokenRegistration1.Dispose();
+                    self.completionSource.TrySetResult(false);
+                }
+            }
+
+            public UniTask DisposeAsync()
+            {
+                TaskTracker.RemoveTracking(this);
+                cancellationTokenRegistration1.Dispose();
+                cancellationTokenRegistration2.Dispose();
+                if (enumerator != null)
+                {
+                    return enumerator.DisposeAsync();
+                }
+                return default;
+            }
+        }
+    }
+}

src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/TakeUntilCanceled.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: e82f498cf3a1df04cbf646773fc11319
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

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

@@ -1,7 +1,4 @@
-using Cysharp.Threading.Tasks.Internal;
+using System.Threading;
-using System;
-using System.Collections.Generic;
-using System.Threading;
 
 namespace Cysharp.Threading.Tasks.Linq
 {

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

@@ -0,0 +1,241 @@
+using Cysharp.Threading.Tasks.Internal;
+using System;
+using System.Collections.Generic;
+using System.Threading;
+
+namespace Cysharp.Threading.Tasks.Linq
+{
+    public static partial class UniTaskAsyncEnumerable
+    {
+        public static IUniTaskAsyncEnumerable<TProperty> EveryValueChanged<TTarget, TProperty>(TTarget target, Func<TTarget, TProperty> propertySelector, PlayerLoopTiming monitorTiming = PlayerLoopTiming.Update, IEqualityComparer<TProperty> equalityComparer = null)
+            where TTarget : class
+        {
+            var unityObject = target as UnityEngine.Object;
+            var isUnityObject = target is UnityEngine.Object; // don't use (unityObject == null)
+
+            if (isUnityObject)
+            {
+                return new EveryValueChangedUnityObject<TTarget, TProperty>(target, propertySelector, equalityComparer ?? UnityEqualityComparer.GetDefault<TProperty>(), monitorTiming);
+            }
+            else
+            {
+                return new EveryValueChangedStandardObject<TTarget, TProperty>(target, propertySelector, equalityComparer ?? UnityEqualityComparer.GetDefault<TProperty>(), monitorTiming);
+            }
+        }
+    }
+
+    internal sealed class EveryValueChangedUnityObject<TTarget, TProperty> : IUniTaskAsyncEnumerable<TProperty>
+    {
+        readonly TTarget target;
+        readonly Func<TTarget, TProperty> propertySelector;
+        readonly IEqualityComparer<TProperty> equalityComparer;
+        readonly PlayerLoopTiming monitorTiming;
+
+        public EveryValueChangedUnityObject(TTarget target, Func<TTarget, TProperty> propertySelector, IEqualityComparer<TProperty> equalityComparer, PlayerLoopTiming monitorTiming)
+        {
+            this.target = target;
+            this.propertySelector = propertySelector;
+            this.equalityComparer = equalityComparer;
+            this.monitorTiming = monitorTiming;
+        }
+
+        public IUniTaskAsyncEnumerator<TProperty> GetAsyncEnumerator(CancellationToken cancellationToken = default)
+        {
+            return new _EveryValueChanged(target, propertySelector, equalityComparer, monitorTiming, cancellationToken);
+        }
+
+        sealed class _EveryValueChanged : MoveNextSource, IUniTaskAsyncEnumerator<TProperty>, IPlayerLoopItem
+        {
+            readonly TTarget target;
+            readonly UnityEngine.Object targetAsUnityObject;
+            readonly IEqualityComparer<TProperty> equalityComparer;
+            readonly Func<TTarget, TProperty> propertySelector;
+            CancellationToken cancellationToken;
+
+            bool first;
+            TProperty currentValue;
+            bool disposed;
+
+            public _EveryValueChanged(TTarget target, Func<TTarget, TProperty> propertySelector, IEqualityComparer<TProperty> equalityComparer, PlayerLoopTiming monitorTiming, CancellationToken cancellationToken)
+            {
+                this.target = target;
+                this.targetAsUnityObject = target as UnityEngine.Object;
+                this.propertySelector = propertySelector;
+                this.equalityComparer = equalityComparer;
+                this.cancellationToken = cancellationToken;
+                this.first = true;
+                TaskTracker.TrackActiveTask(this, 2);
+                PlayerLoopHelper.AddAction(monitorTiming, this);
+            }
+
+            public TProperty Current => currentValue;
+
+            public UniTask<bool> MoveNextAsync()
+            {
+                // return false instead of throw
+                if (disposed || cancellationToken.IsCancellationRequested) return CompletedTasks.False;
+
+                if (first)
+                {
+                    first = false;
+                    if (targetAsUnityObject == null)
+                    {
+                        return CompletedTasks.False;
+                    }
+                    this.currentValue = propertySelector(target);
+                    return CompletedTasks.True;
+                }
+
+                completionSource.Reset();
+                return new UniTask<bool>(this, completionSource.Version);
+            }
+
+            public UniTask DisposeAsync()
+            {
+                if (!disposed)
+                {
+                    disposed = true;
+                    TaskTracker.RemoveTracking(this);
+                }
+                return default;
+            }
+
+            public bool MoveNext()
+            {
+                if (disposed || cancellationToken.IsCancellationRequested || targetAsUnityObject == null) // destroyed = cancel.
+                {
+                    completionSource.TrySetResult(false);
+                    DisposeAsync().Forget();
+                    return false;
+                }
+
+                TProperty nextValue = default(TProperty);
+                try
+                {
+                    nextValue = propertySelector(target);
+                    if (equalityComparer.Equals(currentValue, nextValue))
+                    {
+                        return true;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    completionSource.TrySetException(ex);
+                    DisposeAsync().Forget();
+                    return false;
+                }
+
+                currentValue = nextValue;
+                completionSource.TrySetResult(true);
+                return true;
+            }
+        }
+    }
+
+    internal sealed class EveryValueChangedStandardObject<TTarget, TProperty> : IUniTaskAsyncEnumerable<TProperty>
+        where TTarget : class
+    {
+        readonly WeakReference<TTarget> target;
+        readonly Func<TTarget, TProperty> propertySelector;
+        readonly IEqualityComparer<TProperty> equalityComparer;
+        readonly PlayerLoopTiming monitorTiming;
+
+        public EveryValueChangedStandardObject(TTarget target, Func<TTarget, TProperty> propertySelector, IEqualityComparer<TProperty> equalityComparer, PlayerLoopTiming monitorTiming)
+        {
+            this.target = new WeakReference<TTarget>(target, false);
+            this.propertySelector = propertySelector;
+            this.equalityComparer = equalityComparer;
+            this.monitorTiming = monitorTiming;
+        }
+
+        public IUniTaskAsyncEnumerator<TProperty> GetAsyncEnumerator(CancellationToken cancellationToken = default)
+        {
+            return new _EveryValueChanged(target, propertySelector, equalityComparer, monitorTiming, cancellationToken);
+        }
+
+        sealed class _EveryValueChanged : MoveNextSource, IUniTaskAsyncEnumerator<TProperty>, IPlayerLoopItem
+        {
+            readonly WeakReference<TTarget> target;
+            readonly IEqualityComparer<TProperty> equalityComparer;
+            readonly Func<TTarget, TProperty> propertySelector;
+            CancellationToken cancellationToken;
+
+            bool first;
+            TProperty currentValue;
+            bool disposed;
+
+            public _EveryValueChanged(WeakReference<TTarget> target, Func<TTarget, TProperty> propertySelector, IEqualityComparer<TProperty> equalityComparer, PlayerLoopTiming monitorTiming, CancellationToken cancellationToken)
+            {
+                this.target = target;
+                this.propertySelector = propertySelector;
+                this.equalityComparer = equalityComparer;
+                this.cancellationToken = cancellationToken;
+                this.first = true;
+                TaskTracker.TrackActiveTask(this, 2);
+                PlayerLoopHelper.AddAction(monitorTiming, this);
+            }
+
+            public TProperty Current => currentValue;
+
+            public UniTask<bool> MoveNextAsync()
+            {
+                if (disposed || cancellationToken.IsCancellationRequested) return CompletedTasks.False;
+
+                if (first)
+                {
+                    first = false;
+                    if (!target.TryGetTarget(out var t))
+                    {
+                        return CompletedTasks.False;
+                    }
+                    this.currentValue = propertySelector(t);
+                    return CompletedTasks.True;
+                }
+
+                completionSource.Reset();
+                return new UniTask<bool>(this, completionSource.Version);
+            }
+
+            public UniTask DisposeAsync()
+            {
+                if (!disposed)
+                {
+                    disposed = true;
+                    TaskTracker.RemoveTracking(this);
+                }
+                return default;
+            }
+
+            public bool MoveNext()
+            {
+                UnityEngine.Debug.Log("TRY_RESULT:" + target.TryGetTarget(out var _));
+                if (disposed || cancellationToken.IsCancellationRequested || !target.TryGetTarget(out var t))
+                {
+                    completionSource.TrySetResult(false);
+                    DisposeAsync().Forget();
+                    return false;
+                }
+
+                TProperty nextValue = default(TProperty);
+                try
+                {
+                    nextValue = propertySelector(t);
+                    if (equalityComparer.Equals(currentValue, nextValue))
+                    {
+                        return true;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    completionSource.TrySetException(ex);
+                    DisposeAsync().Forget();
+                    return false;
+                }
+
+                currentValue = nextValue;
+                completionSource.TrySetResult(true);
+                return true;
+            }
+        }
+    }
+}

src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/UnityExtensions/EveryValueChanged.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 1ec39f1c41c305344854782c935ad354
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

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

@@ -66,6 +66,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             float elapsed;
             bool dueTimePhase;
+            bool completed;
             bool disposed;
 
             public _Timer(TimeSpan dueTime, TimeSpan? period, PlayerLoopTiming updateTiming, bool ignoreTimeScale, CancellationToken cancellationToken)
@@ -91,7 +92,7 @@ namespace Cysharp.Threading.Tasks.Linq
             public UniTask<bool> MoveNextAsync()
             {
                 // return false instead of throw
-                if (disposed || cancellationToken.IsCancellationRequested) return CompletedTasks.False;
+                if (disposed || cancellationToken.IsCancellationRequested || completed) return CompletedTasks.False;
 
                 // reset value here.
                 this.elapsed = 0;
@@ -131,6 +132,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 {
                     if (period == null)
                     {
+                        completed = true;
                         completionSource.TrySetResult(false);
                         return false;
                     }
@@ -172,6 +174,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             int currentFrame;
             bool dueTimePhase;
+            bool completed;
             bool disposed;
 
             public _TimerFrame(int dueTimeFrameCount, int? periodFrameCount, PlayerLoopTiming updateTiming, CancellationToken cancellationToken)
@@ -195,7 +198,7 @@ namespace Cysharp.Threading.Tasks.Linq
             public UniTask<bool> MoveNextAsync()
             {
                 // return false instead of throw
-                if (disposed || cancellationToken.IsCancellationRequested) return CompletedTasks.False;
+                if (disposed || cancellationToken.IsCancellationRequested || completed) return CompletedTasks.False;
 
 
                 // reset value here.
@@ -235,6 +238,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 {
                     if (periodFrameCount == null)
                     {
+                        completed = true;
                         completionSource.TrySetResult(false);
                         return false;
                     }

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

@@ -84,6 +84,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.second = second;
                 this.resultSelector = resultSelector;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -181,6 +182,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public async UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (firstEnumerator != null)
                 {
                     await firstEnumerator.DisposeAsync();
@@ -236,6 +238,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.second = second;
                 this.resultSelector = resultSelector;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -351,6 +354,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public async UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (firstEnumerator != null)
                 {
                     await firstEnumerator.DisposeAsync();
@@ -406,6 +410,7 @@ namespace Cysharp.Threading.Tasks.Linq
                 this.second = second;
                 this.resultSelector = resultSelector;
                 this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
             }
 
             public TResult Current { get; private set; }
@@ -521,6 +526,7 @@ namespace Cysharp.Threading.Tasks.Linq
 
             public async UniTask DisposeAsync()
             {
+                TaskTracker.RemoveTracking(this);
                 if (firstEnumerator != null)
                 {
                     await firstEnumerator.DisposeAsync();

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

@@ -1,7 +1,4 @@
-#if NET_4_6 || NET_STANDARD_2_0 || CSHARP_7_OR_LATER
+using System;
-#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
-
-using System;
 using System.Collections.Generic;
 using Cysharp.Threading.Tasks.Internal;
 
@@ -21,7 +18,11 @@ namespace Cysharp.Threading.Tasks
         public static IProgress<T> CreateOnlyValueChanged<T>(Action<T> handler, IEqualityComparer<T> comparer = null)
         {
             if (handler == null) return NullProgress<T>.Instance;
+#if UNITY_2018_3_OR_NEWER
             return new OnlyValueChangedProgress<T>(handler, comparer ?? UnityEqualityComparer.GetDefault<T>());
+#else
+            return new OnlyValueChangedProgress<T>(handler, comparer ?? EqualityComparer<T>.Default);
+#endif
         }
 
         sealed class NullProgress<T> : IProgress<T>
@@ -84,5 +85,3 @@ namespace Cysharp.Threading.Tasks
         }
     }
 }
-
-#endif

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

@@ -4,26 +4,26 @@ using System.Threading;
 
 namespace Cysharp.Threading.Tasks
 {
-    public interface ITriggerEvent<T>
+    public interface ITriggerHandler<T>
     {
-        void SetResult(T value);
+        void OnNext(T value);
-        void SetCanceled(CancellationToken cancellationToken);
+        void OnError(Exception ex);
-        void Add(IResolveCancelPromise<T> handler);
+        void OnCompleted();
-        void Remove(IResolveCancelPromise<T> handler);
+        void OnCanceled(CancellationToken cancellationToken);
     }
 
     // be careful to use, itself is struct.
-    public struct TriggerEvent<T> : ITriggerEvent<T>
+    public struct TriggerEvent<T>
     {
         // optimize: many cases, handler is single.
-        IResolveCancelPromise<T> singleHandler;
+        ITriggerHandler<T> singleHandler;
 
-        IResolveCancelPromise<T>[] handlers;
+        ITriggerHandler<T>[] handlers;
 
-        // when running(in TrySetResult), does not add immediately.
+        // when running(in TrySetResult), does not add immediately(trampoline).
         bool isRunning;
-        IResolveCancelPromise<T> waitHandler;
+        ITriggerHandler<T> waitHandler;
-        MinimumQueue<IResolveCancelPromise<T>> waitQueue;
+        MinimumQueue<ITriggerHandler<T>> waitQueue;
 
         public void SetResult(T value)
         {
@@ -33,7 +33,7 @@ namespace Cysharp.Threading.Tasks
             {
                 try
                 {
-                    singleHandler.TrySetResult(value);
+                    singleHandler.OnNext(value);
                 }
                 catch (Exception ex)
                 {
@@ -53,7 +53,7 @@ namespace Cysharp.Threading.Tasks
                     {
                         try
                         {
-                            handlers[i].TrySetResult(value);
+                            handlers[i].OnNext(value);
                         }
                         catch (Exception ex)
                         {
@@ -94,7 +94,7 @@ namespace Cysharp.Threading.Tasks
             {
                 try
                 {
-                    ((ICancelPromise)singleHandler).TrySetCanceled(cancellationToken);
+                    (singleHandler).OnCanceled(cancellationToken);
                 }
                 catch (Exception ex)
                 {
@@ -114,7 +114,7 @@ namespace Cysharp.Threading.Tasks
                     {
                         try
                         {
-                            ((ICancelPromise)handlers[i]).TrySetCanceled(cancellationToken);
+                            (handlers[i]).OnCanceled(cancellationToken);
                         }
                         catch (Exception ex)
                         {
@@ -147,7 +147,129 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-        public void Add(IResolveCancelPromise<T> handler)
+        public void SetCompleted()
+        {
+            isRunning = true;
+
+            if (singleHandler != null)
+            {
+                try
+                {
+                    (singleHandler).OnCompleted();
+                }
+                catch (Exception ex)
+                {
+#if UNITY_2018_3_OR_NEWER
+                    UnityEngine.Debug.LogException(ex);
+#else
+                    Console.WriteLine(ex);
+#endif
+                }
+            }
+
+            if (handlers != null)
+            {
+                for (int i = 0; i < handlers.Length; i++)
+                {
+                    if (handlers[i] != null)
+                    {
+                        try
+                        {
+                            (handlers[i]).OnCompleted();
+                        }
+                        catch (Exception ex)
+                        {
+#if UNITY_2018_3_OR_NEWER
+                            UnityEngine.Debug.LogException(ex);
+#else
+                            Console.WriteLine(ex);
+#endif
+                            handlers[i] = null;
+                        }
+                    }
+                }
+            }
+
+            isRunning = false;
+
+            if (waitHandler != null)
+            {
+                var h = waitHandler;
+                waitHandler = null;
+                Add(h);
+            }
+
+            if (waitQueue != null)
+            {
+                while (waitQueue.Count != 0)
+                {
+                    Add(waitQueue.Dequeue());
+                }
+            }
+        }
+
+        public void SetError(Exception exception)
+        {
+            isRunning = true;
+
+            if (singleHandler != null)
+            {
+                try
+                {
+                    singleHandler.OnError(exception);
+                }
+                catch (Exception ex)
+                {
+#if UNITY_2018_3_OR_NEWER
+                    UnityEngine.Debug.LogException(ex);
+#else
+                    Console.WriteLine(ex);
+#endif
+                }
+            }
+
+            if (handlers != null)
+            {
+                for (int i = 0; i < handlers.Length; i++)
+                {
+                    if (handlers[i] != null)
+                    {
+                        try
+                        {
+                            handlers[i].OnError(exception);
+                        }
+                        catch (Exception ex)
+                        {
+                            handlers[i] = null;
+#if UNITY_2018_3_OR_NEWER
+                            UnityEngine.Debug.LogException(ex);
+#else
+                            Console.WriteLine(ex);
+#endif
+                        }
+                    }
+                }
+            }
+
+            isRunning = false;
+
+            if (waitHandler != null)
+            {
+                var h = waitHandler;
+                waitHandler = null;
+                Add(h);
+            }
+
+            if (waitQueue != null)
+            {
+                while (waitQueue.Count != 0)
+                {
+                    Add(waitQueue.Dequeue());
+                }
+            }
+        }
+
+        public void Add(ITriggerHandler<T> handler)
         {
             if (isRunning)
             {
@@ -159,7 +281,7 @@ namespace Cysharp.Threading.Tasks
 
                 if (waitQueue == null)
                 {
-                    waitQueue = new MinimumQueue<IResolveCancelPromise<T>>(4);
+                    waitQueue = new MinimumQueue<ITriggerHandler<T>>(4);
                 }
                 waitQueue.Enqueue(handler);
                 return;
@@ -173,7 +295,7 @@ namespace Cysharp.Threading.Tasks
             {
                 if (handlers == null)
                 {
-                    handlers = new IResolveCancelPromise<T>[4];
+                    handlers = new ITriggerHandler<T>[4];
                 }
 
                 // check empty
@@ -195,15 +317,15 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-        static void EnsureCapacity(ref IResolveCancelPromise<T>[] array)
+        static void EnsureCapacity(ref ITriggerHandler<T>[] array)
         {
             var newSize = array.Length * 2;
-            var newArray = new IResolveCancelPromise<T>[newSize];
+            var newArray = new ITriggerHandler<T>[newSize];
             Array.Copy(array, 0, newArray, 0, array.Length);
             array = newArray;
         }
 
-        public void Remove(IResolveCancelPromise<T> handler)
+        public void Remove(ITriggerHandler<T> handler)
         {
             if (singleHandler == handler)
             {

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

@@ -24,10 +24,10 @@ namespace Cysharp.Threading.Tasks.Triggers
             if (calledDestroy) return;
             calledDestroy = true;
 
-            triggerEvent.SetCanceled(CancellationToken.None);
+            triggerEvent.SetCompleted();
         }
 
-        internal void AddHandler(IResolveCancelPromise<T> handler)
+        internal void AddHandler(ITriggerHandler<T> handler)
         {
             if (!calledAwake)
             {
@@ -37,7 +37,7 @@ namespace Cysharp.Threading.Tasks.Triggers
             triggerEvent.Add(handler);
         }
 
-        internal void RemoveHandler(IResolveCancelPromise<T> handler)
+        internal void RemoveHandler(ITriggerHandler<T> handler)
         {
             if (!calledAwake)
             {
@@ -57,7 +57,7 @@ namespace Cysharp.Threading.Tasks.Triggers
             return new AsyncTriggerEnumerator(this, cancellationToken);
         }
 
-        sealed class AsyncTriggerEnumerator : MoveNextSource, IUniTaskAsyncEnumerator<T>, IResolveCancelPromise<T>
+        sealed class AsyncTriggerEnumerator : MoveNextSource, IUniTaskAsyncEnumerator<T>, ITriggerHandler<T>
         {
             static Action<object> cancellationCallback = CancellationCallback;
 
@@ -73,15 +73,25 @@ namespace Cysharp.Threading.Tasks.Triggers
                 this.cancellationToken = cancellationToken;
             }
 
-            public bool TrySetCanceled(CancellationToken cancellationToken = default)
+            public void OnCanceled(CancellationToken cancellationToken = default)
             {
-                return completionSource.TrySetCanceled(cancellationToken);
+                completionSource.TrySetCanceled(cancellationToken);
             }
 
-            public bool TrySetResult(T value)
+            public void OnNext(T value)
             {
                 Current = value;
-                return completionSource.TrySetResult(true);
+                completionSource.TrySetResult(true);
+            }
+
+            public void OnCompleted()
+            {
+                completionSource.TrySetResult(false);
+            }
+
+            public void OnError(Exception ex)
+            {
+                completionSource.TrySetException(ex);
             }
 
             static void CancellationCallback(object state)
@@ -164,7 +174,7 @@ namespace Cysharp.Threading.Tasks.Triggers
         }
     }
 
-    public sealed partial class AsyncTriggerHandler<T> : IUniTaskSource<T>, IResolveCancelPromise<T>, IDisposable
+    public sealed partial class AsyncTriggerHandler<T> : IUniTaskSource<T>, ITriggerHandler<T>, IDisposable
     {
         static Action<object> cancellationCallback = CancellationCallback;
 
@@ -253,14 +263,24 @@ namespace Cysharp.Threading.Tasks.Triggers
             }
         }
 
-        bool IResolvePromise<T>.TrySetResult(T result)
+        void ITriggerHandler<T>.OnNext(T value)
         {
-            return core.TrySetResult(result);
+            core.TrySetResult(value);
         }
 
-        bool ICancelPromise.TrySetCanceled(CancellationToken cancellationToken)
+        void ITriggerHandler<T>.OnCanceled(CancellationToken cancellationToken)
         {
-            return core.TrySetCanceled(cancellationToken);
+            core.TrySetCanceled(cancellationToken);
+        }
+
+        void ITriggerHandler<T>.OnCompleted()
+        {
+            core.TrySetCanceled(CancellationToken.None);
+        }
+
+        void ITriggerHandler<T>.OnError(Exception ex)
+        {
+            core.TrySetException(ex);
         }
 
         void IUniTaskSource.GetResult(short token)

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

@@ -132,6 +132,101 @@ namespace Cysharp.Threading.Tasks
         {
             asyncAction(state).Forget();
         }
+
+        /// <summary>
+        /// Defer the task creation just before call await.
+        /// </summary>
+        public static UniTask Defer(Func<UniTask> factory)
+        {
+            return new UniTask(new DeferPromise(factory), 0);
+        }
+
+        /// <summary>
+        /// Defer the task creation just before call await.
+        /// </summary>
+        public static UniTask<T> Defer<T>(Func<UniTask<T>> factory)
+        {
+            return new UniTask<T>(new DeferPromise<T>(factory), 0);
+        }
+
+        sealed class DeferPromise : IUniTaskSource
+        {
+            Func<UniTask> factory;
+            UniTask task;
+            UniTask.Awaiter awaiter;
+
+            public DeferPromise(Func<UniTask> factory)
+            {
+                this.factory = factory;
+            }
+
+            public void GetResult(short token)
+            {
+                awaiter.GetResult();
+            }
+
+            public UniTaskStatus GetStatus(short token)
+            {
+                var f = Interlocked.Exchange(ref factory, null);
+                if (f == null) throw new InvalidOperationException("Can't call twice.");
+
+                task = f();
+                awaiter = f().GetAwaiter();
+                return task.Status;
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token)
+            {
+                awaiter.SourceOnCompleted(continuation, state);
+            }
+
+            public UniTaskStatus UnsafeGetStatus()
+            {
+                return task.Status;
+            }
+        }
+
+        sealed class DeferPromise<T> : IUniTaskSource<T>
+        {
+            Func<UniTask<T>> factory;
+            UniTask<T> task;
+            UniTask<T>.Awaiter awaiter;
+
+            public DeferPromise(Func<UniTask<T>> factory)
+            {
+                this.factory = factory;
+            }
+
+            public T GetResult(short token)
+            {
+                return awaiter.GetResult();
+            }
+
+            void IUniTaskSource.GetResult(short token)
+            {
+                awaiter.GetResult();
+            }
+
+            public UniTaskStatus GetStatus(short token)
+            {
+                var f = Interlocked.Exchange(ref factory, null);
+                if (f == null) throw new InvalidOperationException("Can't call twice.");
+
+                task = f();
+                awaiter = f().GetAwaiter();
+                return task.Status;
+            }
+
+            public void OnCompleted(Action<object> continuation, object state, short token)
+            {
+                awaiter.SourceOnCompleted(continuation, state);
+            }
+
+            public UniTaskStatus UnsafeGetStatus()
+            {
+                return task.Status;
+            }
+        }
     }
 
     internal static class CompletedTasks

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

@@ -19,11 +19,16 @@ namespace Cysharp.Threading.Tasks
             return new UniTask(WaitWhilePromise.Create(predicate, timing, cancellationToken, out var token), token);
         }
 
+        public static UniTask WaitUntilCanceled(CancellationToken cancellationToken, PlayerLoopTiming timing = PlayerLoopTiming.Update)
+        {
+            return new UniTask(WaitUntilCanceledPromise.Create(cancellationToken, timing, out var token), token);
+        }
+
         public static UniTask<U> WaitUntilValueChanged<T, U>(T target, Func<T, U> monitorFunction, PlayerLoopTiming monitorTiming = PlayerLoopTiming.Update, IEqualityComparer<U> equalityComparer = null, CancellationToken cancellationToken = default(CancellationToken))
           where T : class
         {
             var unityObject = target as UnityEngine.Object;
-            var isUnityObject = !object.ReferenceEquals(target, null); // don't use (unityObject == null)
+            var isUnityObject = target is UnityEngine.Object; // don't use (unityObject == null)
 
             return new UniTask<U>(isUnityObject
                 ? WaitUntilValueChangedUnityObjectPromise<T, U>.Create(target, monitorFunction, equalityComparer, monitorTiming, cancellationToken, out var token)
@@ -234,12 +239,98 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
+        sealed class WaitUntilCanceledPromise : IUniTaskSource, IPlayerLoopItem, IPromisePoolItem
+        {
+            static readonly PromisePool<WaitUntilCanceledPromise> pool = new PromisePool<WaitUntilCanceledPromise>();
+
+            CancellationToken cancellationToken;
+
+            UniTaskCompletionSourceCore<object> core;
+
+            WaitUntilCanceledPromise()
+            {
+            }
+
+            public static IUniTaskSource Create(CancellationToken cancellationToken, PlayerLoopTiming timing, out short token)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return AutoResetUniTaskCompletionSource.CreateFromCanceled(cancellationToken, out token);
+                }
+
+                var result = pool.TryRent() ?? new WaitUntilCanceledPromise();
+
+                result.cancellationToken = cancellationToken;
+
+                TaskTracker.TrackActiveTask(result, 3);
+
+                PlayerLoopHelper.AddAction(timing, result);
+
+                token = result.core.Version;
+                return result;
+            }
+
+            public void GetResult(short token)
+            {
+                try
+                {
+                    TaskTracker.RemoveTracking(this);
+                    core.GetResult(token);
+                }
+                finally
+                {
+                    pool.TryReturn(this);
+                }
+            }
+
+            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.TrySetResult(null);
+                    return false;
+                }
+
+                return true;
+            }
+
+            public void Reset()
+            {
+                core.Reset();
+                cancellationToken = default;
+            }
+
+            ~WaitUntilCanceledPromise()
+            {
+                if (pool.TryReturn(this))
+                {
+                    GC.ReRegisterForFinalize(this);
+                }
+            }
+        }
+
         // where T : UnityEngine.Object, can not add constraint
         sealed class WaitUntilValueChangedUnityObjectPromise<T, U> : IUniTaskSource<U>, IPlayerLoopItem, IPromisePoolItem
         {
             static readonly PromisePool<WaitUntilValueChangedUnityObjectPromise<T, U>> pool = new PromisePool<WaitUntilValueChangedUnityObjectPromise<T, U>>();
 
             T target;
+            UnityEngine.Object targetAsUnityObject;
             U currentValue;
             Func<T, U> monitorFunction;
             IEqualityComparer<U> equalityComparer;
@@ -261,6 +352,7 @@ namespace Cysharp.Threading.Tasks
                 var result = pool.TryRent() ?? new WaitUntilValueChangedUnityObjectPromise<T, U>();
 
                 result.target = target;
+                result.targetAsUnityObject = target as UnityEngine.Object;
                 result.monitorFunction = monitorFunction;
                 result.currentValue = monitorFunction(target);
                 result.equalityComparer = equalityComparer ?? UnityEqualityComparer.GetDefault<U>();
@@ -309,7 +401,7 @@ namespace Cysharp.Threading.Tasks
 
             public bool MoveNext()
             {
-                if (cancellationToken.IsCancellationRequested || target == null) // destroyed = cancel.
+                if (cancellationToken.IsCancellationRequested || targetAsUnityObject == null) // destroyed = cancel.
                 {
                     core.TrySetCanceled(cancellationToken);
                     return false;
@@ -353,7 +445,6 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-
         sealed class WaitUntilValueChangedStandardObjectPromise<T, U> : IUniTaskSource<U>, IPlayerLoopItem, IPromisePoolItem
             where T : class
         {

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

@@ -38,14 +38,6 @@ namespace Cysharp.Threading.Tasks
     {
     }
 
-    public interface IResolveCancelPromise : IResolvePromise, ICancelPromise
-    {
-    }
-
-    public interface IResolveCancelPromise<T> : IResolvePromise<T>, ICancelPromise
-    {
-    }
-
     [StructLayout(LayoutKind.Auto)]
     public struct UniTaskCompletionSourceCore<TResult>
     {
@@ -97,6 +89,11 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
+        internal void MarkHandled()
+        {
+            hasUnhandledError = false;
+        }
+
         /// <summary>Completes with a successful result.</summary>
         /// <param name="result">The result.</param>
         [DebuggerHidden]
@@ -293,12 +290,12 @@ namespace Cysharp.Threading.Tasks
         }
 
         [DebuggerHidden]
-        [Conditional("UNITY_EDITOR")]
         internal void MarkHandled()
         {
             if (!handled)
             {
                 handled = true;
+                core.MarkHandled();
                 TaskTracker.RemoveTracking(this);
             }
         }
@@ -504,12 +501,12 @@ namespace Cysharp.Threading.Tasks
         }
 
         [DebuggerHidden]
-        [Conditional("UNITY_EDITOR")]
         internal void MarkHandled()
         {
             if (!handled)
             {
                 handled = true;
+                core.MarkHandled();
                 TaskTracker.RemoveTracking(this);
             }
         }

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

@@ -1,9 +1,8 @@
 #pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
 
+using Cysharp.Threading.Tasks.Linq;
 using System;
 using System.Threading;
-using Cysharp.Threading.Tasks.Internal;
-using Cysharp.Threading.Tasks.Linq;
 using UnityEngine;
 using UnityEngine.Events;
 using UnityEngine.UI;
@@ -27,6 +26,21 @@ namespace Cysharp.Threading.Tasks
             return new UnityEventHandlerAsyncEnumerable(unityEvent, cancellationToken);
         }
 
+        public static AsyncUnityEventHandler<T> GetAsyncEventHandler<T>(this UnityEvent<T> unityEvent, CancellationToken cancellationToken)
+        {
+            return new AsyncUnityEventHandler<T>(unityEvent, cancellationToken, false);
+        }
+
+        public static UniTask<T> OnInvokeAsync<T>(this UnityEvent<T> unityEvent, CancellationToken cancellationToken)
+        {
+            return new AsyncUnityEventHandler<T>(unityEvent, cancellationToken, true).OnInvokeAsync();
+        }
+
+        public static IUniTaskAsyncEnumerable<T> OnInvokeAsAsyncEnumerable<T>(this UnityEvent<T> unityEvent, CancellationToken cancellationToken)
+        {
+            return new UnityEventHandlerAsyncEnumerable<T>(unityEvent, cancellationToken);
+        }
+
         public static IAsyncClickEventHandler GetAsyncClickEventHandler(this Button button)
         {
             return new AsyncUnityEventHandler(button.onClick, button.GetCancellationTokenOnDestroy(), false);
@@ -207,6 +221,36 @@ namespace Cysharp.Threading.Tasks
             return new UnityEventHandlerAsyncEnumerable<string>(inputField.onEndEdit, cancellationToken);
         }
 
+        public static IAsyncValueChangedEventHandler<string> GetAsyncValueChangedEventHandler(this InputField inputField)
+        {
+            return new AsyncUnityEventHandler<string>(inputField.onValueChanged, inputField.GetCancellationTokenOnDestroy(), false);
+        }
+
+        public static IAsyncValueChangedEventHandler<string> GetAsyncValueChangedEventHandler(this InputField inputField, CancellationToken cancellationToken)
+        {
+            return new AsyncUnityEventHandler<string>(inputField.onValueChanged, cancellationToken, false);
+        }
+
+        public static UniTask<string> OnValueChangedAsync(this InputField inputField)
+        {
+            return new AsyncUnityEventHandler<string>(inputField.onValueChanged, inputField.GetCancellationTokenOnDestroy(), true).OnInvokeAsync();
+        }
+
+        public static UniTask<string> OnValueChangedAsync(this InputField inputField, CancellationToken cancellationToken)
+        {
+            return new AsyncUnityEventHandler<string>(inputField.onValueChanged, cancellationToken, true).OnInvokeAsync();
+        }
+
+        public static IUniTaskAsyncEnumerable<string> OnValueChangedAsAsyncEnumerable(this InputField inputField)
+        {
+            return new UnityEventHandlerAsyncEnumerable<string>(inputField.onValueChanged, inputField.GetCancellationTokenOnDestroy());
+        }
+
+        public static IUniTaskAsyncEnumerable<string> OnValueChangedAsAsyncEnumerable(this InputField inputField, CancellationToken cancellationToken)
+        {
+            return new UnityEventHandlerAsyncEnumerable<string>(inputField.onValueChanged, cancellationToken);
+        }
+
         public static IAsyncValueChangedEventHandler<int> GetAsyncValueChangedEventHandler(this Dropdown dropdown)
         {
             return new AsyncUnityEventHandler<int>(dropdown.onValueChanged, dropdown.GetCancellationTokenOnDestroy(), false);

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

@@ -1,5 +1,6 @@
 using System;
 using System.Threading;
+using UnityEngine;
 using UnityEngine.UI;
 
 namespace Cysharp.Threading.Tasks
@@ -40,11 +41,6 @@ namespace Cysharp.Threading.Tasks
                         if (rebindOnError && !repeat)
                         {
                             repeat = true;
-                            if (e != null)
-                            {
-                                await e.DisposeAsync();
-                            }
-
                             goto BIND_AGAIN;
                         }
                         else
@@ -106,11 +102,6 @@ namespace Cysharp.Threading.Tasks
                         if (rebindOnError && !repeat)
                         {
                             repeat = true;
-                            if (e != null)
-                            {
-                                await e.DisposeAsync();
-                            }
-
                             goto BIND_AGAIN;
                         }
                         else
@@ -167,11 +158,6 @@ namespace Cysharp.Threading.Tasks
                         if (rebindOnError && !repeat)
                         {
                             repeat = true;
-                            if (e != null)
-                            {
-                                await e.DisposeAsync();
-                            }
-
                             goto BIND_AGAIN;
                         }
                         else
@@ -195,6 +181,63 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
+        // <T> -> Action
+
+        public static void BindTo<TSource, TObject>(this IUniTaskAsyncEnumerable<TSource> source, TObject monoBehaviour, Action<TObject, TSource> bindAction, bool rebindOnError = true)
+            where TObject : MonoBehaviour
+        {
+            BindToCore(source, monoBehaviour, bindAction, monoBehaviour.GetCancellationTokenOnDestroy(), rebindOnError).Forget();
+        }
+
+        public static void BindTo<TSource, TObject>(this IUniTaskAsyncEnumerable<TSource> source, TObject bindTarget, Action<TObject, TSource> bindAction, CancellationToken cancellationToken, bool rebindOnError = true)
+        {
+            BindToCore(source, bindTarget, bindAction, cancellationToken, rebindOnError).Forget();
+        }
+
+        static async UniTaskVoid BindToCore<TSource, TObject>(IUniTaskAsyncEnumerable<TSource> source, TObject bindTarget, Action<TObject, TSource> bindAction, CancellationToken cancellationToken, bool rebindOnError)
+        {
+            var repeat = false;
+            BIND_AGAIN:
+            var e = source.GetAsyncEnumerator(cancellationToken);
+            try
+            {
+                while (true)
+                {
+                    bool moveNext;
+                    try
+                    {
+                        moveNext = await e.MoveNextAsync();
+                        repeat = false;
+                    }
+                    catch (Exception ex)
+                    {
+                        if (ex is OperationCanceledException) return;
+
+                        if (rebindOnError && !repeat)
+                        {
+                            repeat = true;
+                            goto BIND_AGAIN;
+                        }
+                        else
+                        {
+                            throw;
+                        }
+                    }
+
+                    if (!moveNext) return;
+
+                    bindAction(bindTarget, e.Current);
+                }
+            }
+            finally
+            {
+                if (e != null)
+                {
+                    await e.DisposeAsync();
+                }
+            }
+        }
+
         // TMP
 
 #if UNITASK_TEXTMESHPRO_SUPPORT
@@ -231,11 +274,6 @@ namespace Cysharp.Threading.Tasks
                         if (rebindOnError && !repeat)
                         {
                             repeat = true;
-                            if (e != null)
-                            {
-                                await e.DisposeAsync();
-                            }
-
                             goto BIND_AGAIN;
                         }
                         else

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

@@ -1,10 +1,10 @@
 {
     "name": "com.cysharp.unitask",
     "displayName": "UniTask",
-    "version": "2.0.4-rc1",
+    "version": "2.0.8-rc5",
     "unity": "2018.3",
     "description": "Provides an efficient async/await integration to Unity.",
-    "keywords": ["async/await", "async", "Task", "UniTask"],
+    "keywords": [ "async/await", "async", "Task", "UniTask" ],
     "license": "MIT",
     "category": "Task",
     "dependencies": {}

src/UniTask/Assets/Scenes/SandboxMain.cs

@@ -1,20 +1,16 @@
-using System;
+using Cysharp.Threading.Tasks;
-
 using Cysharp.Threading.Tasks.Linq;
 using Cysharp.Threading.Tasks.Triggers;
+using System;
 using System.Collections;
 using System.Collections.Generic;
-using System.IO;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
-using Cysharp.Threading.Tasks;
 using Unity.Collections;
 using Unity.Jobs;
 using UnityEngine;
-using UnityEngine.Networking;
 using UnityEngine.UI;
-using TMPro;
 
 public struct MyJob : IJob
 {
@@ -39,6 +35,36 @@ public enum MyEnum
 }
 
 
+public class SimplePresenter
+{
+    // View
+    public UnityEngine.UI.InputField Input;
+
+
+    // Presenter
+
+
+    public SimplePresenter()
+    {
+        //Input.OnValueChangedAsAsyncEnumerable()
+        //   .Queue()
+        //   .SelectAwait(async x =>
+        //   {
+        //       await UniTask.Delay(TimeSpan.FromSeconds(1));
+        //       return x;
+        //   })
+        //   .Select(x=> x.ToUpper())
+        //   .BindTo(
+
+
+
+    }
+
+}
+
+
+
+
 
 
 
@@ -50,14 +76,43 @@ public static partial class UnityUIComponentExtensions
 
 
 
+public class AsyncMessageBroker<T> : IDisposable
+{
+    Channel<T> channel;
 
+    IConnectableUniTaskAsyncEnumerable<T> multicastSource;
+    IDisposable connection;
+
+    public AsyncMessageBroker()
+    {
+        channel = Channel.CreateSingleConsumerUnbounded<T>();
+        multicastSource = channel.Reader.ReadAllAsync().Publish();
+        connection = multicastSource.Connect();
+    }
+
+    public void Publish(T value)
+    {
+        channel.Writer.TryWrite(value);
+    }
+
+    public IUniTaskAsyncEnumerable<T> Subscribe()
+    {
+        return multicastSource;
+    }
+
+    public void Dispose()
+    {
+        channel.Writer.TryComplete();
+        connection.Dispose();
+    }
+}
 
 
 public class SandboxMain : MonoBehaviour
 {
     public Button okButton;
     public Button cancelButton;
-    public Text text;
+
 
     CancellationTokenSource cts;
 
@@ -80,6 +135,63 @@ public class SandboxMain : MonoBehaviour
     }
 
 
+
+
+
+    public class Model
+    {
+        // State<int> Hp { get; }
+
+        AsyncReactiveProperty<int> hp;
+        IReadOnlyAsyncReactiveProperty<int> Hp => hp;
+
+
+
+        public Model()
+        {
+            // hp = new AsyncReactiveProperty<int>();
+
+
+
+
+
+
+            //setHp = Hp.GetSetter();
+        }
+
+        void Increment(int value)
+        {
+
+
+            // setHp(Hp.Value += value);
+        }
+    }
+
+
+
+    public Text text;
+    public Button button;
+
+    [SerializeField]
+    State<int> count;
+
+    void Start2()
+    {
+        count = 10;
+
+        var countS = count.GetSetter();
+
+        count.BindTo(text);
+        button.OnClickAsAsyncEnumerable().ForEachAsync(_ =>
+        {
+            // int foo = countS;
+            //countS.Set(countS += 10);
+
+            // setter.SetValue(count.Value + 10);
+        });
+    }
+
+
     async UniTask RunStandardDelayAsync()
     {
         UnityEngine.Debug.Log("DEB");
@@ -96,9 +208,6 @@ public class SandboxMain : MonoBehaviour
 
         var scheduled = job.Schedule();
 
-
-
-
         UnityEngine.Debug.Log("OK");
         await scheduled; // .ConfigureAwait(PlayerLoopTiming.Update); // .WaitAsync(PlayerLoopTiming.Update);
         UnityEngine.Debug.Log("OK2");
@@ -124,153 +233,102 @@ public class SandboxMain : MonoBehaviour
 
 
     }
+    private async UniTaskVoid HogeAsync()
+    {
+        // await is not over
+        await UniTaskAsyncEnumerable
+            .TimerFrame(10)
+            .ForEachAwaitAsync(async _ =>
+            // .ForEachAsync(_ =>
+            {
+                await UniTask.Delay(1000);
+                Debug.Log(Time.time);
+            });
+
+        Debug.Log("Done");
+    }
+
+    public int MyProperty { get; set; }
+
+    public class MyClass
+    {
+        public int MyProperty { get; set; }
+    }
+
+    MyClass mcc;
 
     void Start()
     {
-        Application.SetStackTraceLogType(LogType.Error, StackTraceLogType.Full);
+        this.mcc = new MyClass();
-        Application.SetStackTraceLogType(LogType.Exception, StackTraceLogType.Full);
+        this.MyProperty = 999;
 
-        var playerLoop = UnityEngine.LowLevel.PlayerLoop.GetCurrentPlayerLoop();
+        CheckDest().Forget();
-        //ShowPlayerLoop.DumpPlayerLoop("Current", playerLoop);
 
 
-        RP1 = new AsyncReactiveProperty<int>(999);
+        //UniTaskAsyncEnumerable.EveryValueChanged(mcc, x => x.MyProperty)
-
+        //    .Do(_ => { }, () => Debug.Log("COMPLETED"))
-
+        //    .ForEachAsync(x =>
-
-        RP1.Select(x => x * x).BindTo(text);
-
-
-        //Update2().Forget();
-
-        //RunStandardDelayAsync().Forget();
-
-        //for (int i = 0; i < 14; i++)
-        //{
-        //    TimingDump((PlayerLoopTiming)i).Forget();
-        //}
-
-        //StartCoroutine(CoroutineDump("yield WaitForEndOfFrame", new WaitForEndOfFrame()));
-        //StartCoroutine(CoroutineDump("yield WaitForFixedUpdate", new WaitForFixedUpdate()));
-        //StartCoroutine(CoroutineDump("yield null", null));
-
-        // -----
-
-        // RunJobAsync().Forget();
-
-        //ClickOnce().Forget();
-        //ClickForever().Forget();
-
-        //var cor = UniTask.ToCoroutine(async () =>
-        // {
-        //     var job = new MyJob() { loopCount = 999, inOut = new NativeArray<int>(1, Allocator.TempJob) };
-        //     JobHandle.ScheduleBatchedJobs();
-        //     await job.Schedule().WaitAsync(PlayerLoopTiming.Update);
-        //     job.inOut.Dispose();
-        // });
-
-        //StartCoroutine(cor);
-
-        // UniTaskAsyncEnumerable.EveryUpdate(PlayerLoopTiming.FixedUpdate)
-
-
-        //await UniTask.Yield(PlayerLoopTiming.Update);
-        //Debug.Log("Start:" + Time.frameCount);
-
-        //await UniTaskAsyncEnumerable.TimerFrame(3, 5, PlayerLoopTiming.PostLateUpdate)
-        //    .Select(x => x)
-        //    .Do(x => Debug.Log("DODODO"))
-        //    .ForEachAsync(_ =>
         //    {
-        //        Debug.Log("Call:" + Time.frameCount);
+        //        Debug.Log("VALUE_CHANGED:" + x);
-        //    }, cancellationToken: this.GetCancellationTokenOnDestroy());
+        //    })
-
+        //    .Forget();
-        //try
-        //{
-        //    await this.GetAsyncUpdateTrigger().ForEachAsync(_ =>
-        //    {
-        //        UnityEngine.Debug.Log("EveryUpdate:" + Time.frameCount);
-        //    });
-        //}
-        //catch (OperationCanceledException ex)
-        //{
-        //    UnityEngine.Debug.Log("END");
-        //}
-
-
-
-        CancellationTokenSource cts = new CancellationTokenSource();
-
-        //var trigger = this.GetAsyncUpdateTrigger();
-        //Go(trigger, 1, cts.Token).Forget();
-        //Go(trigger, 2, cts.Token).Forget();
-        //Go(trigger, 3, cts.Token).Forget();
-        //Go(trigger, 4, cts.Token).Forget();
-        //Go(trigger, 5, cts.Token).Forget();
-
-
-        Application.logMessageReceived += Application_logMessageReceived;
-
-
-
-        // foo.Status.IsCanceled
-
-
-        // 5回クリックされるまで待つ、とか。
-        //Debug.Log("Await start.");
-
-
-
-        //await okButton.GetAsyncClickEventHandler().DisableAutoClose()
-        //  .Select((_, clickCount) => clickCount + 1)
-        // .FirstAsync(x => x == 5);
-
-        //Debug.Log("Click 5 times.");
-
-
-
-        // await this.GetAsyncUpdateTrigger().UpdateAsAsyncEnumerable()
 
 
 
 
-
+        okButton.OnClickAsAsyncEnumerable().ForEachAsync(_ =>
-
-
-
-
-
-
-
-
-
-        //ucs = new UniTaskCompletionSource();
-
-        //okButton.onClick.AddListener(async () =>
-        //{
-        //    await InnerAsync(false);
-        //});
-
-        okButton.onClick.AddListener(() =>
         {
-            // FooAsync().Forget();
 
-            RP1.Value += 3;
+            mcc.MyProperty += 10;
 
+
+
+        }).Forget();
+
+        cancelButton.OnClickAsAsyncEnumerable().ForEachAsync(_ =>
+        {
+            this.mcc = null;
         });
 
-        cancelButton.onClick.AddListener(() =>
-        {
-            text.text = "";
-
-            // ucs.TrySetResult();
-
-            cts.Cancel();
-        });
     }
 
-    static void Foo(UniTask t)
+    async UniTaskVoid CheckDest()
     {
+        try
+        {
+            Debug.Log("WAIT");
+            await UniTask.WaitUntilValueChanged(mcc, x => x.MyProperty);
+            Debug.Log("CHANGED?");
+        }
+        finally
+        {
+            Debug.Log("END");
+        }
+    }
+
+    async UniTaskVoid Running(CancellationToken ct)
+    {
+        Debug.Log("BEGIN");
+        await UniTask.WaitUntilCanceled(ct);
+        Debug.Log("DONE");
+    }
+
+    async UniTaskVoid WaitForChannelAsync(ChannelReader<int> reader, CancellationToken token)
+    {
+        try
+        {
+            //var result1 = await reader.ReadAsync(token);
+            //Debug.Log(result1);
+
+            await reader.ReadAllAsync().ForEachAsync(x => Debug.Log(x)/*, token*/);
+
+            Debug.Log("done");
+        }
+        catch (Exception ex)
+        {
+            Debug.Log("here");
+            Debug.LogException(ex);
+        }
     }
 
     async UniTaskVoid Go(AsyncUpdateTrigger trigger, int i, CancellationToken ct)

src/UniTask/Packages/manifest.json

@@ -1,47 +0,0 @@
-{
-  "dependencies": {
-    "com.unity.addressables": "1.8.3",
-    "com.unity.ads": "3.4.4",
-    "com.unity.analytics": "3.3.5",
-    "com.unity.collab-proxy": "1.2.16",
-    "com.unity.ext.nunit": "1.0.0",
-    "com.unity.ide.rider": "1.1.4",
-    "com.unity.ide.visualstudio": "1.0.5",
-    "com.unity.ide.vscode": "1.1.4",
-    "com.unity.purchasing": "2.0.6",
-    "com.unity.test-framework": "1.1.13",
-    "com.unity.textmeshpro": "2.0.1",
-    "com.unity.timeline": "1.2.6",
-    "com.unity.modules.ai": "1.0.0",
-    "com.unity.modules.androidjni": "1.0.0",
-    "com.unity.modules.animation": "1.0.0",
-    "com.unity.modules.assetbundle": "1.0.0",
-    "com.unity.modules.audio": "1.0.0",
-    "com.unity.modules.cloth": "1.0.0",
-    "com.unity.modules.director": "1.0.0",
-    "com.unity.modules.imageconversion": "1.0.0",
-    "com.unity.modules.imgui": "1.0.0",
-    "com.unity.modules.jsonserialize": "1.0.0",
-    "com.unity.modules.particlesystem": "1.0.0",
-    "com.unity.modules.physics": "1.0.0",
-    "com.unity.modules.physics2d": "1.0.0",
-    "com.unity.modules.screencapture": "1.0.0",
-    "com.unity.modules.terrain": "1.0.0",
-    "com.unity.modules.terrainphysics": "1.0.0",
-    "com.unity.modules.tilemap": "1.0.0",
-    "com.unity.modules.ui": "1.0.0",
-    "com.unity.modules.uielements": "1.0.0",
-    "com.unity.modules.umbra": "1.0.0",
-    "com.unity.modules.unityanalytics": "1.0.0",
-    "com.unity.modules.unitywebrequest": "1.0.0",
-    "com.unity.modules.unitywebrequestassetbundle": "1.0.0",
-    "com.unity.modules.unitywebrequestaudio": "1.0.0",
-    "com.unity.modules.unitywebrequesttexture": "1.0.0",
-    "com.unity.modules.unitywebrequestwww": "1.0.0",
-    "com.unity.modules.vehicles": "1.0.0",
-    "com.unity.modules.video": "1.0.0",
-    "com.unity.modules.vr": "1.0.0",
-    "com.unity.modules.wind": "1.0.0",
-    "com.unity.modules.xr": "1.0.0"
-  }
-}