2.0.11-rc8

README.md

@@ -378,15 +378,7 @@ ECS, PlayerLoop
 TODO:
 
 ```csharp
-// Setup Entities Loop.
-var loop = PlayerLoop.GetDefaultPlayerLoop();
-foreach (var world in Unity.Entities.World.All)
-{
-    ScriptBehaviourUpdateOrder.UpdatePlayerLoop(world, loop);
-    loop = PlayerLoop.GetCurrentPlayerLoop();
-}
-
-// UniTask PlayerLoop Initialize.
+var loop = PlayerLoop.GetCurrentPlayerLoop();
 PlayerLoopHelper.Initialize(ref loop);
 ```
 

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

@@ -1,123 +1,30 @@
 #pragma warning disable 0649
 
-using System;
-using System.Runtime.CompilerServices;
 using System.Threading.Tasks;
-using System.Threading.Tasks.Sources;
 
 namespace Cysharp.Threading.Tasks
 {
     public static class UniTaskValueTaskExtensions
     {
-        public static ValueTask AsValueTask(this UniTask task)
+        public static ValueTask AsValueTask(this in UniTask task)
         {
-            ref var core = ref Unsafe.As<UniTask, UniTaskToValueTask>(ref task);
-            if (core.source == null)
-            {
-                return default;
-            }
-            
-            return new ValueTask(new UniTaskValueTaskSource(core.source), core.token);
+            return task;
         }
 
-        public static ValueTask<T> AsValueTask<T>(this UniTask<T> task)
+        public static ValueTask<T> AsValueTask<T>(this in UniTask<T> task)
         {
-            ref var core = ref Unsafe.As<UniTask<T>, UniTaskToValueTask<T>>(ref task);
-            if (core.source == null)
-            {
-                return new ValueTask<T>(core.result);
-            }
-
-            return new ValueTask<T>(new UniTaskValueTaskSource<T>(core.source), core.token);
+            return task;
         }
 
-        struct UniTaskToValueTask
+        public static UniTask<T> AsUniTask<T>(this ValueTask<T> task, bool useCurrentSynchronizationContext = true)
         {
-            public IUniTaskSource source;
-            public short token;
+            // NOTE: get _obj and _token directly for low overhead conversion but not yet implemented.
+            return task.AsTask().AsUniTask(useCurrentSynchronizationContext);
         }
 
-        class UniTaskValueTaskSource : IValueTaskSource
+        public static UniTask AsUniTask(this ValueTask task, bool useCurrentSynchronizationContext = true)
         {
-            readonly IUniTaskSource source;
-
-            public UniTaskValueTaskSource(IUniTaskSource source)
-            {
-                this.source = source;
-            }
-
-            public void GetResult(short token)
-            {
-                source.GetResult(token);
-            }
-
-            public ValueTaskSourceStatus GetStatus(short token)
-            {
-                var status = source.GetStatus(token);
-                switch (status)
-                {
-                    case UniTaskStatus.Pending:
-                        return ValueTaskSourceStatus.Pending;
-                    case UniTaskStatus.Succeeded:
-                        return ValueTaskSourceStatus.Succeeded;
-                    case UniTaskStatus.Faulted:
-                        return ValueTaskSourceStatus.Faulted;
-                    case UniTaskStatus.Canceled:
-                        return ValueTaskSourceStatus.Canceled;
-                    default:
-                        return (ValueTaskSourceStatus)status;
-                }
-            }
-
-            public void OnCompleted(Action<object> continuation, object state, short token, ValueTaskSourceOnCompletedFlags flags)
-            {
-                source.OnCompleted(continuation, state, token);
-            }
-        }
-
-        struct UniTaskToValueTask<T>
-        {
-            public IUniTaskSource<T> source;
-            public T result;
-            public short token;
-        }
-
-        class UniTaskValueTaskSource<T> : IValueTaskSource<T>
-        {
-            readonly IUniTaskSource<T> source;
-
-            public UniTaskValueTaskSource(IUniTaskSource<T> source)
-            {
-                this.source = source;
-            }
-
-            public T GetResult(short token)
-            {
-                return source.GetResult(token);
-            }
-
-            public ValueTaskSourceStatus GetStatus(short token)
-            {
-                var status = source.GetStatus(token);
-                switch (status)
-                {
-                    case UniTaskStatus.Pending:
-                        return ValueTaskSourceStatus.Pending;
-                    case UniTaskStatus.Succeeded:
-                        return ValueTaskSourceStatus.Succeeded;
-                    case UniTaskStatus.Faulted:
-                        return ValueTaskSourceStatus.Faulted;
-                    case UniTaskStatus.Canceled:
-                        return ValueTaskSourceStatus.Canceled;
-                    default:
-                        return (ValueTaskSourceStatus)status;
-                }
-            }
-
-            public void OnCompleted(Action<object> continuation, object state, short token, ValueTaskSourceOnCompletedFlags flags)
-            {
-                source.OnCompleted(continuation, state, token);
-            }
+            return task.AsTask().AsUniTask(useCurrentSynchronizationContext);
         }
     }
 }

src/UniTask.NetCore/NetCore/UniTask.Yield.cs

@@ -1,4 +1,6 @@
-using System;
+using Cysharp.Threading.Tasks.Internal;
+using System;
+using System.Collections.Concurrent;
 using System.Runtime.CompilerServices;
 using System.Threading;
 
@@ -41,7 +43,11 @@ namespace Cysharp.Threading.Tasks
                     }
                     else
                     {
+#if NETCOREAPP3_1
+                        ThreadPool.UnsafeQueueUserWorkItem(ThreadPoolWorkItem.Create(continuation), false);
+#else
                         ThreadPool.UnsafeQueueUserWorkItem(WaitCallbackDelegate, continuation);
+#endif
                     }
                 }
 
@@ -50,6 +56,39 @@ namespace Cysharp.Threading.Tasks
                     ((Action)state).Invoke();
                 }
             }
+
+#if NETCOREAPP3_1
+
+            public sealed class ThreadPoolWorkItem : IThreadPoolWorkItem
+            {
+                static readonly ConcurrentQueue<ThreadPoolWorkItem> pool = new ConcurrentQueue<ThreadPoolWorkItem>();
+
+                Action continuation;
+
+                [MethodImpl(MethodImplOptions.AggressiveInlining)]
+                public static ThreadPoolWorkItem Create(Action continuation)
+                {
+                    if (!pool.TryDequeue(out var item))
+                    {
+                        item = new ThreadPoolWorkItem();
+                    }
+
+                    item.continuation = continuation;
+                    return item;
+                }
+
+                [MethodImpl(MethodImplOptions.AggressiveInlining)]
+                public void Execute()
+                {
+                    var call = continuation;
+                    continuation = null;
+                    pool.Enqueue(this);
+
+                    call.Invoke();
+                }
+            }
+
+#endif
         }
     }
 }

src/UniTask.NetCore/UniTask.NetCore.csproj

@@ -1,8 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>netstandard2.0</TargetFramework>
+        <TargetFrameworks>netcoreapp3.1;netstandard2.1</TargetFrameworks>
         <AssemblyName>UniTask</AssemblyName>
+        <LangVersion>8.0</LangVersion>
         <RootNamespace>Cysharp.Threading.Tasks</RootNamespace>
     </PropertyGroup>
 

src/UniTask.NetCoreSandbox/AllocationCheck.cs

@@ -0,0 +1,198 @@
+using BenchmarkDotNet.Attributes;
+using System.Linq;
+using BenchmarkDotNet.Configs;
+using BenchmarkDotNet.Diagnosers;
+using BenchmarkDotNet.Exporters;
+using BenchmarkDotNet.Jobs;
+using BenchmarkDotNet.Running;
+using Cysharp.Threading.Tasks;
+using PooledAwait;
+using System;
+using System.Runtime.ExceptionServices;
+using System.Threading.Tasks;
+using System.Threading;
+using System.Runtime.CompilerServices;
+using Cysharp.Threading.Tasks.CompilerServices;
+using System.Collections.Concurrent;
+
+[Config(typeof(BenchmarkConfig))]
+public class AllocationCheck
+{
+    // note: all the benchmarks use Task/Task<T> for the public API, because BenchmarkDotNet
+    // doesn't work reliably with more exotic task-types (even just ValueTask fails); instead,
+    // we'll obscure the cost of the outer awaitable by doing a relatively large number of
+    // iterations, so that we're only really measuring the inner loop
+    private const int InnerOps = 1000;
+
+    [Benchmark(OperationsPerInvoke = InnerOps)]
+    public async Task ViaUniTask()
+    {
+        for (int i = 0; i < InnerOps; i++)
+        {
+            await Core();
+        }
+
+        static async UniTask Core()
+        {
+            await new TestAwaiter(false, UniTaskStatus.Succeeded);
+            await new TestAwaiter(false, UniTaskStatus.Succeeded);
+            await new TestAwaiter(false, UniTaskStatus.Succeeded);
+        }
+    }
+
+    [Benchmark(OperationsPerInvoke = InnerOps)]
+    public async Task<int> ViaUniTaskT()
+    {
+        var sum = 0;
+        for (int i = 0; i < InnerOps; i++)
+        {
+            sum += await Core();
+        }
+        return sum;
+
+        static async UniTask<int> Core()
+        {
+            var a = await new TestAwaiter<int>(false, UniTaskStatus.Succeeded, 10);
+            var b = await new TestAwaiter<int>(false, UniTaskStatus.Succeeded, 10);
+            var c = await new TestAwaiter<int>(false, UniTaskStatus.Succeeded, 10);
+            return 10;
+        }
+    }
+
+    [Benchmark(OperationsPerInvoke = InnerOps)]
+    public Task ViaUniTaskVoid()
+    {
+        for (int i = 0; i < InnerOps; i++)
+        {
+            Core().Forget();
+        }
+        return Task.CompletedTask;
+
+        static async UniTaskVoid Core()
+        {
+            await new TestAwaiter(false, UniTaskStatus.Succeeded);
+            await new TestAwaiter(false, UniTaskStatus.Succeeded);
+            await new TestAwaiter(false, UniTaskStatus.Succeeded);
+        }
+    }
+}
+
+public class TaskTestException : Exception
+{
+
+}
+
+public struct TestAwaiter : ICriticalNotifyCompletion
+{
+    readonly UniTaskStatus status;
+    readonly bool isCompleted;
+
+    public TestAwaiter(bool isCompleted, UniTaskStatus status)
+    {
+        this.isCompleted = isCompleted;
+        this.status = status;
+    }
+
+    public TestAwaiter GetAwaiter() => this;
+
+    public bool IsCompleted => isCompleted;
+
+    public void GetResult()
+    {
+        switch (status)
+        {
+            case UniTaskStatus.Faulted:
+                throw new TaskTestException();
+            case UniTaskStatus.Canceled:
+                throw new OperationCanceledException();
+            case UniTaskStatus.Pending:
+            case UniTaskStatus.Succeeded:
+            default:
+                break;
+        }
+    }
+
+    public void OnCompleted(Action continuation)
+    {
+        ThreadPool.UnsafeQueueUserWorkItem(ThreadPoolWorkItem.Create(continuation), false);
+    }
+
+    public void UnsafeOnCompleted(Action continuation)
+    {
+        ThreadPool.UnsafeQueueUserWorkItem(ThreadPoolWorkItem.Create(continuation), false);
+    }
+
+
+}
+
+public struct TestAwaiter<T> : ICriticalNotifyCompletion
+{
+    readonly UniTaskStatus status;
+    readonly bool isCompleted;
+    readonly T value;
+
+    public TestAwaiter(bool isCompleted, UniTaskStatus status, T value)
+    {
+        this.isCompleted = isCompleted;
+        this.status = status;
+        this.value = value;
+    }
+
+    public TestAwaiter<T> GetAwaiter() => this;
+
+    public bool IsCompleted => isCompleted;
+
+    public T GetResult()
+    {
+        switch (status)
+        {
+            case UniTaskStatus.Faulted:
+                throw new TaskTestException();
+            case UniTaskStatus.Canceled:
+                throw new OperationCanceledException();
+            case UniTaskStatus.Pending:
+            case UniTaskStatus.Succeeded:
+            default:
+                return value;
+        }
+    }
+
+    public void OnCompleted(Action continuation)
+    {
+        ThreadPool.UnsafeQueueUserWorkItem(ThreadPoolWorkItem.Create(continuation), false);
+    }
+
+    public void UnsafeOnCompleted(Action continuation)
+    {
+        ThreadPool.UnsafeQueueUserWorkItem(ThreadPoolWorkItem.Create(continuation), false);
+    }
+}
+
+public sealed class ThreadPoolWorkItem : IThreadPoolWorkItem
+{
+    static readonly ConcurrentQueue<ThreadPoolWorkItem> pool = new ConcurrentQueue<ThreadPoolWorkItem>();
+
+    Action continuation;
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static ThreadPoolWorkItem Create(Action continuation)
+    {
+        if (!pool.TryDequeue(out var item))
+        {
+            item = new ThreadPoolWorkItem();
+        }
+
+        item.continuation = continuation;
+        return item;
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public void Execute()
+    {
+        var call = continuation;
+        continuation = null;
+        pool.Enqueue(this);
+
+        call.Invoke();
+    }
+}

src/UniTask.NetCoreSandbox/Benchmark.cs

@@ -0,0 +1,283 @@
+using BenchmarkDotNet.Attributes;
+using System.Linq;
+using BenchmarkDotNet.Configs;
+using BenchmarkDotNet.Diagnosers;
+using BenchmarkDotNet.Exporters;
+using BenchmarkDotNet.Jobs;
+using BenchmarkDotNet.Running;
+using Cysharp.Threading.Tasks;
+using PooledAwait;
+using System;
+using System.Runtime.ExceptionServices;
+using System.Threading.Tasks;
+using System.Threading;
+using System.Runtime.CompilerServices;
+using Cysharp.Threading.Tasks.CompilerServices;
+
+//class Program
+//{
+//    static void Main(string[] args)
+//    {
+//        var switcher = new BenchmarkSwitcher(new[]
+//        {
+//            typeof(StandardBenchmark)
+//        });
+
+//#if DEBUG
+//        var b = new StandardBenchmark();
+
+//#else
+//        switcher.Run(args);
+//#endif
+//    }
+//}
+
+public class BenchmarkConfig : ManualConfig
+{
+    public BenchmarkConfig()
+    {
+        AddDiagnoser(MemoryDiagnoser.Default);
+        AddJob(Job.ShortRun.WithLaunchCount(1).WithIterationCount(1).WithWarmupCount(1));
+    }
+}
+
+// borrowed from PooledAwait
+
+[Config(typeof(BenchmarkConfig))]
+[GroupBenchmarksBy(BenchmarkLogicalGroupRule.ByCategory)]
+[CategoriesColumn]
+public class ComparisonBenchmarks
+{
+    // note: all the benchmarks use Task/Task<T> for the public API, because BenchmarkDotNet
+    // doesn't work reliably with more exotic task-types (even just ValueTask fails); instead,
+    // we'll obscure the cost of the outer awaitable by doing a relatively large number of
+    // iterations, so that we're only really measuring the inner loop
+    private const int InnerOps = 1000;
+
+    public bool ConfigureAwait { get; set; } = false;
+
+    [Benchmark(OperationsPerInvoke = InnerOps, Description = ".NET")]
+    [BenchmarkCategory("Task<T>")]
+    public async Task<int> ViaTaskT()
+    {
+        int sum = 0;
+        for (int i = 0; i < InnerOps; i++)
+            sum += await Inner(1, 2).ConfigureAwait(ConfigureAwait);
+        return sum;
+
+        static async Task<int> Inner(int x, int y)
+        {
+            int i = x;
+            await Task.Yield();
+            i *= y;
+            await Task.Yield();
+            return 5 * i;
+        }
+    }
+
+    [Benchmark(OperationsPerInvoke = InnerOps, Description = ".NET")]
+    [BenchmarkCategory("Task")]
+    public async Task ViaTask()
+    {
+        for (int i = 0; i < InnerOps; i++)
+            await Inner().ConfigureAwait(ConfigureAwait);
+
+        static async Task Inner()
+        {
+            await Task.Yield();
+            await Task.Yield();
+        }
+    }
+
+    [Benchmark(OperationsPerInvoke = InnerOps, Description = ".NET")]
+    [BenchmarkCategory("ValueTask<T>")]
+    public async Task<int> ViaValueTaskT()
+    {
+        int sum = 0;
+        for (int i = 0; i < InnerOps; i++)
+            sum += await Inner(1, 2).ConfigureAwait(ConfigureAwait);
+        return sum;
+
+        static async ValueTask<int> Inner(int x, int y)
+        {
+            int i = x;
+            await Task.Yield();
+            i *= y;
+            await Task.Yield();
+            return 5 * i;
+        }
+    }
+
+    [Benchmark(OperationsPerInvoke = InnerOps, Description = ".NET")]
+    [BenchmarkCategory("ValueTask")]
+    public async Task ViaValueTask()
+    {
+        for (int i = 0; i < InnerOps; i++)
+            await Inner().ConfigureAwait(ConfigureAwait);
+
+        static async ValueTask Inner()
+        {
+            await Task.Yield();
+            await Task.Yield();
+        }
+    }
+
+    [Benchmark(OperationsPerInvoke = InnerOps, Description = "Pooled")]
+    [BenchmarkCategory("ValueTask<T>")]
+    public async Task<int> ViaPooledValueTaskT()
+    {
+        int sum = 0;
+        for (int i = 0; i < InnerOps; i++)
+            sum += await Inner(1, 2).ConfigureAwait(ConfigureAwait);
+        return sum;
+
+        static async PooledValueTask<int> Inner(int x, int y)
+        {
+            int i = x;
+            await Task.Yield();
+            i *= y;
+            await Task.Yield();
+            return 5 * i;
+        }
+    }
+
+    [Benchmark(OperationsPerInvoke = InnerOps, Description = "Pooled")]
+    [BenchmarkCategory("ValueTask")]
+    public async Task ViaPooledValueTask()
+    {
+        for (int i = 0; i < InnerOps; i++)
+            await Inner().ConfigureAwait(ConfigureAwait);
+
+        static async PooledValueTask Inner()
+        {
+            await Task.Yield();
+            await Task.Yield();
+        }
+    }
+
+    [Benchmark(OperationsPerInvoke = InnerOps, Description = "Pooled")]
+    [BenchmarkCategory("Task<T>")]
+    public async Task<int> ViaPooledTaskT()
+    {
+        int sum = 0;
+        for (int i = 0; i < InnerOps; i++)
+            sum += await Inner(1, 2).ConfigureAwait(ConfigureAwait);
+        return sum;
+
+        static async PooledTask<int> Inner(int x, int y)
+        {
+            int i = x;
+            await Task.Yield();
+            i *= y;
+            await Task.Yield();
+            return 5 * i;
+        }
+    }
+
+    [Benchmark(OperationsPerInvoke = InnerOps, Description = "Pooled")]
+    [BenchmarkCategory("Task")]
+    public async Task ViaPooledTask()
+    {
+        for (int i = 0; i < InnerOps; i++)
+            await Inner().ConfigureAwait(ConfigureAwait);
+
+        static async PooledTask Inner()
+        {
+            await Task.Yield();
+            await Task.Yield();
+        }
+    }
+
+    // ---
+
+    //[Benchmark(OperationsPerInvoke = InnerOps, Description = "UniTaskVoid")]
+    //[BenchmarkCategory("UniTask")]
+    //public async Task ViaUniTaskVoid()
+    //{
+    //    for (int i = 0; i < InnerOps; i++)
+    //    {
+    //        await Inner();
+    //    }
+
+    //    static async UniTaskVoid Inner()
+    //    {
+    //        await UniTask.Yield();
+    //        await UniTask.Yield();
+    //    }
+    //}
+
+    [Benchmark(OperationsPerInvoke = InnerOps, Description = "UniTask")]
+    [BenchmarkCategory("UniTask")]
+    public async Task ViaUniTask()
+    {
+        for (int i = 0; i < InnerOps; i++)
+        {
+            await Inner();
+        }
+
+        static async UniTask Inner()
+        {
+            await UniTask.Yield();
+            await UniTask.Yield();
+        }
+    }
+
+    [Benchmark(OperationsPerInvoke = InnerOps, Description = "UniTaskT")]
+    [BenchmarkCategory("UniTask")]
+    public async Task<int> ViaUniTaskT()
+    {
+        var sum = 0;
+        for (int i = 0; i < InnerOps; i++)
+        {
+            sum += await Inner(1, 2);
+        }
+        return sum;
+
+        static async UniTask<int> Inner(int x, int y)
+        {
+            int i = x;
+            await UniTask.Yield();
+            i *= y;
+            await UniTask.Yield();
+            return 5 * i;
+        }
+    }
+}
+
+public struct MyAwaiter : ICriticalNotifyCompletion
+{
+    public MyAwaiter GetAwaiter() => this;
+
+    public bool IsCompleted => false;
+
+    public void GetResult()
+    {
+    }
+
+    public void OnCompleted(Action continuation)
+    {
+        continuation();
+    }
+
+    public void UnsafeOnCompleted(Action continuation)
+    {
+        continuation();
+    }
+}
+
+public struct MyTestStateMachine : IAsyncStateMachine
+{
+    public void MoveNext()
+    {
+        //throw new NotImplementedException();
+
+
+
+
+    }
+
+    public void SetStateMachine(IAsyncStateMachine stateMachine)
+    {
+        //throw new NotImplementedException();
+    }
+}

src/UniTask.NetCoreSandbox/Program.cs

@@ -21,6 +21,113 @@ namespace NetCoreSandbox
         public string text { get; set; }
     }
 
+    public class ZeroAllocAsyncAwaitInDotNetCore
+    {
+        public ValueTask<int> NanikaAsync(int x, int y)
+        {
+            return Core(this, x, y);
+
+            static async UniTask<int> Core(ZeroAllocAsyncAwaitInDotNetCore self, int x, int y)
+            {
+                // nanika suru...
+                await Task.Delay(TimeSpan.FromSeconds(x + y));
+
+                return 10;
+            }
+        }
+    }
+
+
+    public class TaskTestException : Exception
+    {
+
+    }
+
+
+    public struct TestAwaiter : ICriticalNotifyCompletion
+    {
+        readonly UniTaskStatus status;
+        readonly bool isCompleted;
+
+        public TestAwaiter(bool isCompleted, UniTaskStatus status)
+        {
+            this.isCompleted = isCompleted;
+            this.status = status;
+        }
+
+        public TestAwaiter GetAwaiter() => this;
+
+        public bool IsCompleted => isCompleted;
+
+        public void GetResult()
+        {
+            switch (status)
+            {
+                case UniTaskStatus.Faulted:
+                    throw new TaskTestException();
+                case UniTaskStatus.Canceled:
+                    throw new OperationCanceledException();
+                case UniTaskStatus.Pending:
+                case UniTaskStatus.Succeeded:
+                default:
+                    break;
+            }
+        }
+
+        public void OnCompleted(Action continuation)
+        {
+            ThreadPool.QueueUserWorkItem(_ => continuation(), null);
+        }
+
+        public void UnsafeOnCompleted(Action continuation)
+        {
+            ThreadPool.UnsafeQueueUserWorkItem(_ => continuation(), null);
+        }
+    }
+    public struct TestAwaiter<T> : ICriticalNotifyCompletion
+    {
+        readonly UniTaskStatus status;
+        readonly bool isCompleted;
+        readonly T value;
+
+        public TestAwaiter(bool isCompleted, UniTaskStatus status, T value)
+        {
+            this.isCompleted = isCompleted;
+            this.status = status;
+            this.value = value;
+        }
+
+        public TestAwaiter<T> GetAwaiter() => this;
+
+        public bool IsCompleted => isCompleted;
+
+        public T GetResult()
+        {
+            switch (status)
+            {
+                case UniTaskStatus.Faulted:
+                    throw new TaskTestException();
+                case UniTaskStatus.Canceled:
+                    throw new OperationCanceledException();
+                case UniTaskStatus.Pending:
+                case UniTaskStatus.Succeeded:
+                default:
+                    return value;
+            }
+        }
+
+        public void OnCompleted(Action continuation)
+        {
+            ThreadPool.QueueUserWorkItem(_ => continuation(), null);
+        }
+
+        public void UnsafeOnCompleted(Action continuation)
+        {
+            ThreadPool.UnsafeQueueUserWorkItem(_ => continuation(), null);
+        }
+    }
+
+
     public static partial class UnityUIComponentExtensions
     {
         public static void BindTo(this IUniTaskAsyncEnumerable<string> source, Text text)
@@ -88,20 +195,47 @@ namespace NetCoreSandbox
 
 
 
-        static void Main(string[] args)
+        static async Task Main(string[] args)
         {
+#if !DEBUG
+            BenchmarkDotNet.Running.BenchmarkSwitcher.FromAssembly(typeof(Program).Assembly).Run(args);
 
-            var channel = Channel.CreateSingleConsumerUnbounded<int>();
+            //await new ComparisonBenchmarks().ViaUniTaskT();
+            return;
+#endif
 
 
+            AsyncTest().Forget();
 
 
+            //AsyncTest().Forget();
+
+            // AsyncTest().Forget();
 
 
+            await UniTask.Yield();
+            Console.ReadLine();
+        }
+
+#pragma warning disable CS1998
+
+
+        static async UniTaskVoid AsyncTest()
+        {
+            // empty
+            await new TestAwaiter(false, UniTaskStatus.Succeeded);
+            await new TestAwaiter(true, UniTaskStatus.Succeeded);
+            await new TestAwaiter(false, UniTaskStatus.Succeeded);
+
+
+            Console.WriteLine("foo");
+            //return 10;
         }
 
 
 
+#pragma warning restore CS1998
+
         void Foo()
         {
 

src/UniTask.NetCoreSandbox/UniTask.NetCoreSandbox.csproj

@@ -7,6 +7,8 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="BenchmarkDotNet" Version="0.12.1" />
+    <PackageReference Include="PooledAwait" Version="1.0.49" />
     <PackageReference Include="System.Interactive.Async" Version="4.1.1" />
     <PackageReference Include="System.Reactive" Version="4.4.1" />
   </ItemGroup>

src/UniTask.NetCoreTests/AsyncReactivePropertyTest.cs

@@ -51,6 +51,67 @@ namespace NetCoreTests
 
             ar.Should().BeEquivalentTo(new[] { 100, 100, 100, 131, 191 });
         }
+
+        //[Fact]
+        //public async Task StateIteration()
+        //{
+        //    var rp = new ReadOnlyAsyncReactiveProperty<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 ReadOnlyAsyncReactiveProperty<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.ToReadOnlyAsyncReactiveProperty(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/Linq/Projection.cs

@@ -319,5 +319,119 @@ namespace NetCoreTests.Linq
                 await Assert.ThrowsAsync<UniTaskTestException>(async () => await ys);
             }
         }
+
+        [Fact]
+        public async Task CombineLatestOK()
+        {
+            var a = new AsyncReactiveProperty<int>(0);
+            var b = new AsyncReactiveProperty<int>(0);
+
+            var list = new List<(int, int)>();
+            var complete = a.WithoutCurrent().CombineLatest(b.WithoutCurrent(), (x, y) => (x, y)).ForEachAsync(x => list.Add(x));
+
+            list.Count.Should().Be(0);
+
+            a.Value = 10;
+            list.Count.Should().Be(0);
+
+            a.Value = 20;
+            list.Count.Should().Be(0);
+
+            b.Value = 1;
+            list.Count.Should().Be(1);
+
+            list[0].Should().Be((20, 1));
+
+            a.Value = 30;
+            list.Last().Should().Be((30, 1));
+
+            b.Value = 2;
+            list.Last().Should().Be((30, 2));
+
+            a.Dispose();
+            b.Value = 3;
+            list.Last().Should().Be((30, 3));
+
+            b.Dispose();
+
+            await complete;
+        }
+
+        [Fact]
+        public async Task CombineLatestLong()
+        {
+            var a = UniTaskAsyncEnumerable.Range(1, 100000);
+            var b = new AsyncReactiveProperty<int>(0);
+
+            var list = new List<(int, int)>();
+            var complete = a.CombineLatest(b.WithoutCurrent(), (x, y) => (x, y)).ForEachAsync(x => list.Add(x));
+
+            b.Value = 1;
+
+            list[0].Should().Be((100000, 1));
+
+            b.Dispose();
+
+            await complete;
+        }
+
+        [Fact]
+        public async Task CombineLatestError()
+        {
+            var a = new AsyncReactiveProperty<int>(0);
+            var b = new AsyncReactiveProperty<int>(0);
+
+            var list = new List<(int, int)>();
+            var complete = a.WithoutCurrent()
+                .Select(x => { if (x == 0) { throw new MyException(); } return x; })
+                .CombineLatest(b.WithoutCurrent(), (x, y) => (x, y)).ForEachAsync(x => list.Add(x));
+
+
+            a.Value = 10;
+            b.Value = 1;
+            list.Last().Should().Be((10, 1));
+
+            a.Value = 0;
+
+            await Assert.ThrowsAsync<MyException>(async () => await complete);
+        }
+
+
+
+        [Fact]
+        public async Task PariwiseImmediate()
+        {
+            var xs = await UniTaskAsyncEnumerable.Range(1, 5).Pairwise().ToArrayAsync();
+            xs.Should().BeEquivalentTo((1, 2), (2, 3), (3, 4), (4, 5));
+        }
+
+        [Fact]
+        public async Task Pariwise()
+        {
+            var a = new AsyncReactiveProperty<int>(0);
+
+            var list = new List<(int, int)>();
+            var complete = a.WithoutCurrent().Pairwise().ForEachAsync(x => list.Add(x));
+
+            list.Count.Should().Be(0);
+            a.Value = 10;
+            list.Count.Should().Be(0);
+            a.Value = 20;
+            list.Count.Should().Be(1);
+            a.Value = 30;
+            a.Value = 40;
+            a.Value = 50;
+
+            a.Dispose();
+
+            await complete;
+
+            list.Should().BeEquivalentTo((10, 20), (20, 30), (30, 40), (40, 50));
+        }
+
+        class MyException : Exception
+        {
+
+        }
     }
 }

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/TaskBuilderCases.cs

@@ -0,0 +1,301 @@
+#pragma warning disable CS1998 
+
+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;
+using System.Runtime.CompilerServices;
+
+namespace NetCoreTests
+{
+    public class UniTaskBuilderTest
+    {
+        [Fact]
+        public async Task Empty()
+        {
+            await Core();
+
+            static async UniTask Core()
+            {
+            }
+        }
+
+        [Fact]
+        public async Task EmptyThrow()
+        {
+            await Assert.ThrowsAsync<TaskTestException>(async () => await Core());
+
+            static async UniTask Core()
+            {
+                throw new TaskTestException();
+            }
+        }
+
+        [Fact]
+        public async Task Task_Done()
+        {
+            await Core();
+
+            static async UniTask Core()
+            {
+                await new TestAwaiter(true, UniTaskStatus.Succeeded);
+            }
+        }
+
+        [Fact]
+        public async Task Task_Fail()
+        {
+            await Assert.ThrowsAsync<TaskTestException>(async () => await Core());
+
+            static async UniTask Core()
+            {
+                await new TestAwaiter(true, UniTaskStatus.Faulted);
+            }
+        }
+
+        [Fact]
+        public async Task Task_Cancel()
+        {
+            await Assert.ThrowsAsync<OperationCanceledException>(async () => await Core());
+
+            static async UniTask Core()
+            {
+                await new TestAwaiter(true, UniTaskStatus.Canceled);
+            }
+        }
+
+        [Fact]
+        public async Task AwaitUnsafeOnCompletedCall_Task_SetResult()
+        {
+            await Core();
+
+            static async UniTask Core()
+            {
+                await new TestAwaiter(false, UniTaskStatus.Succeeded);
+                await new TestAwaiter(false, UniTaskStatus.Succeeded);
+                await new TestAwaiter(false, UniTaskStatus.Succeeded);
+            }
+        }
+
+        [Fact]
+        public async Task AwaitUnsafeOnCompletedCall_Task_SetException()
+        {
+            await Assert.ThrowsAsync<TaskTestException>(async () => await Core());
+
+            static async UniTask Core()
+            {
+                await new TestAwaiter(false, UniTaskStatus.Succeeded);
+                await new TestAwaiter(false, UniTaskStatus.Faulted);
+                throw new InvalidOperationException();
+            }
+        }
+
+        [Fact]
+        public async Task AwaitUnsafeOnCompletedCall_Task_SetCancelException()
+        {
+            await Assert.ThrowsAsync<OperationCanceledException>(async () => await Core());
+
+            static async UniTask Core()
+            {
+                await new TestAwaiter(false, UniTaskStatus.Succeeded);
+                await new TestAwaiter(false, UniTaskStatus.Canceled);
+                throw new InvalidOperationException();
+            }
+        }
+    }
+
+    public class UniTask_T_BuilderTest
+    {
+        [Fact]
+        public async Task Empty()
+        {
+            (await Core()).Should().Be(10);
+
+            static async UniTask<int> Core()
+            {
+                return 10;
+            }
+        }
+
+        [Fact]
+        public async Task EmptyThrow()
+        {
+            await Assert.ThrowsAsync<TaskTestException>(async () => await Core());
+
+            static async UniTask<int> Core()
+            {
+                throw new TaskTestException();
+            }
+        }
+
+        [Fact]
+        public async Task Task_Done()
+        {
+            (await Core()).Should().Be(10);
+
+            static async UniTask<int> Core()
+            {
+                return await new TestAwaiter<int>(true, UniTaskStatus.Succeeded, 10);
+            }
+        }
+
+        [Fact]
+        public async Task Task_Fail()
+        {
+            await Assert.ThrowsAsync<TaskTestException>(async () => await Core());
+
+            static async UniTask<int> Core()
+            {
+                return await new TestAwaiter<int>(true, UniTaskStatus.Faulted, 10);
+            }
+        }
+
+        [Fact]
+        public async Task Task_Cancel()
+        {
+            await Assert.ThrowsAsync<OperationCanceledException>(async () => await Core());
+
+            static async UniTask<int> Core()
+            {
+                return await new TestAwaiter<int>(true, UniTaskStatus.Canceled, 10);
+            }
+        }
+
+        [Fact]
+        public async Task AwaitUnsafeOnCompletedCall_Task_SetResult()
+        {
+            (await Core()).Should().Be(6);
+
+            static async UniTask<int> Core()
+            {
+                var sum = 0;
+                sum += await new TestAwaiter<int>(false, UniTaskStatus.Succeeded, 1);
+                sum += await new TestAwaiter<int>(false, UniTaskStatus.Succeeded, 2);
+                sum += await new TestAwaiter<int>(false, UniTaskStatus.Succeeded, 3);
+                return sum;
+            }
+        }
+
+        [Fact]
+        public async Task AwaitUnsafeOnCompletedCall_Task_SetException()
+        {
+            await Assert.ThrowsAsync<TaskTestException>(async () => await Core());
+
+            static async UniTask<int> Core()
+            {
+                await new TestAwaiter<int>(false, UniTaskStatus.Succeeded, 10);
+                await new TestAwaiter<int>(false, UniTaskStatus.Faulted, 10);
+                throw new InvalidOperationException();
+            }
+        }
+
+        [Fact]
+        public async Task AwaitUnsafeOnCompletedCall_Task_SetCancelException()
+        {
+            await Assert.ThrowsAsync<OperationCanceledException>(async () => await Core());
+
+            static async UniTask<int> Core()
+            {
+                await new TestAwaiter<int>(false, UniTaskStatus.Succeeded, 10);
+                await new TestAwaiter<int>(false, UniTaskStatus.Canceled, 10);
+                throw new InvalidOperationException();
+            }
+        }
+    }
+
+    public class TaskTestException : Exception
+    {
+
+    }
+
+    public struct TestAwaiter : ICriticalNotifyCompletion
+    {
+        readonly UniTaskStatus status;
+        readonly bool isCompleted;
+
+        public TestAwaiter(bool isCompleted, UniTaskStatus status)
+        {
+            this.isCompleted = isCompleted;
+            this.status = status;
+        }
+
+        public TestAwaiter GetAwaiter() => this;
+
+        public bool IsCompleted => isCompleted;
+
+        public void GetResult()
+        {
+            switch (status)
+            {
+                case UniTaskStatus.Faulted:
+                    throw new TaskTestException();
+                case UniTaskStatus.Canceled:
+                    throw new OperationCanceledException();
+                case UniTaskStatus.Pending:
+                case UniTaskStatus.Succeeded:
+                default:
+                    break;
+            }
+        }
+
+        public void OnCompleted(Action continuation)
+        {
+            ThreadPool.QueueUserWorkItem(_ => continuation(), null);
+        }
+
+        public void UnsafeOnCompleted(Action continuation)
+        {
+            ThreadPool.UnsafeQueueUserWorkItem(_ => continuation(), null);
+        }
+    }
+
+    public struct TestAwaiter<T> : ICriticalNotifyCompletion
+    {
+        readonly UniTaskStatus status;
+        readonly bool isCompleted;
+        readonly T value;
+
+        public TestAwaiter(bool isCompleted, UniTaskStatus status, T value)
+        {
+            this.isCompleted = isCompleted;
+            this.status = status;
+            this.value = value;
+        }
+
+        public TestAwaiter<T> GetAwaiter() => this;
+
+        public bool IsCompleted => isCompleted;
+
+        public T GetResult()
+        {
+            switch (status)
+            {
+                case UniTaskStatus.Faulted:
+                    throw new TaskTestException();
+                case UniTaskStatus.Canceled:
+                    throw new OperationCanceledException();
+                case UniTaskStatus.Pending:
+                case UniTaskStatus.Succeeded:
+                default:
+                    return value;
+            }
+        }
+
+        public void OnCompleted(Action continuation)
+        {
+            ThreadPool.QueueUserWorkItem(_ => continuation(), null);
+        }
+
+        public void UnsafeOnCompleted(Action continuation)
+        {
+            ThreadPool.UnsafeQueueUserWorkItem(_ => continuation(), null);
+        }
+    }
+}

src/UniTask/Assets/Editor/EditorRunnerChecker.cs

@@ -0,0 +1,30 @@
+#if UNITY_EDITOR
+
+using Cysharp.Threading.Tasks;
+using System;
+using System.IO;
+using System.Linq;
+using UnityEditor;
+using UnityEngine;
+using UnityEngine.Networking;
+
+public static class EditorRunnerChecker
+{
+    [MenuItem("Tools/UniTaskEditorRunnerChecker")]
+    public static void RunUniTaskAsync()
+    {
+        RunCore().Forget();
+    }
+
+    static async UniTaskVoid RunCore()
+    {
+        Debug.Log("Start");
+
+        var r = await UnityWebRequest.Get("https://bing.com/").SendWebRequest().ToUniTask();
+        Debug.Log(r.downloadHandler.text.Substring(0, 100));
+
+        Debug.Log("End");
+    }
+}
+
+#endif

src/UniTask/Assets/Editor/EditorRunnerChecker.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: e51b78c06cb410f42b36e0af9de3b065
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

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

@@ -59,6 +59,24 @@ namespace Cysharp.Threading.Tasks
             triggerEvent.SetCompleted();
         }
 
+        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;
@@ -144,6 +162,11 @@ namespace Cysharp.Threading.Tasks
                 completionSource.TrySetResult(false);
             }
 
+            public void OnError(Exception ex)
+            {
+                completionSource.TrySetException(ex);
+            }
+
             static void CancellationCallback(object state)
             {
                 var self = (Enumerator)state;
@@ -151,4 +174,198 @@ namespace Cysharp.Threading.Tasks
             }
         }
     }
-}
+
+    public class ReadOnlyAsyncReactiveProperty<T> : IReadOnlyAsyncReactiveProperty<T>, IDisposable
+    {
+        TriggerEvent<T> triggerEvent;
+
+        T latestValue;
+        IUniTaskAsyncEnumerator<T> enumerator;
+
+        public T Value
+        {
+            get
+            {
+                return latestValue;
+            }
+        }
+
+        public ReadOnlyAsyncReactiveProperty(T initialValue, IUniTaskAsyncEnumerable<T> source, CancellationToken cancellationToken)
+        {
+            latestValue = initialValue;
+            ConsumeEnumerator(source, cancellationToken).Forget();
+        }
+
+        public ReadOnlyAsyncReactiveProperty(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())
+                {
+                    var value = enumerator.Current;
+                    this.latestValue = value;
+                    triggerEvent.SetResult(value);
+                }
+            }
+            finally
+            {
+                await enumerator.DisposeAsync();
+                enumerator = null;
+            }
+        }
+
+        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 T(ReadOnlyAsyncReactiveProperty<T> value)
+        {
+            return value.Value;
+        }
+
+        public override string ToString()
+        {
+            if (isValueType) return latestValue.ToString();
+            return latestValue?.ToString();
+        }
+
+        static bool isValueType;
+
+        static ReadOnlyAsyncReactiveProperty()
+        {
+            isValueType = typeof(T).IsValueType;
+        }
+
+        class WithoutCurrentEnumerable : IUniTaskAsyncEnumerable<T>
+        {
+            readonly ReadOnlyAsyncReactiveProperty<T> parent;
+
+            public WithoutCurrentEnumerable(ReadOnlyAsyncReactiveProperty<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 ReadOnlyAsyncReactiveProperty<T> parent;
+            readonly CancellationToken cancellationToken;
+            readonly CancellationTokenRegistration cancellationTokenRegistration;
+            T value;
+            bool isDisposed;
+            bool firstCall;
+
+            public Enumerator(ReadOnlyAsyncReactiveProperty<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 ReadOnlyAsyncReactiveProperty<T> ToReadOnlyAsyncReactiveProperty<T>(this IUniTaskAsyncEnumerable<T> source, CancellationToken cancellationToken)
+        {
+            return new ReadOnlyAsyncReactiveProperty<T>(source, cancellationToken);
+        }
+
+        public static ReadOnlyAsyncReactiveProperty<T> ToReadOnlyAsyncReactiveProperty<T>(this IUniTaskAsyncEnumerable<T> source, T initialValue, CancellationToken cancellationToken)
+        {
+            return new ReadOnlyAsyncReactiveProperty<T>(initialValue, source, cancellationToken);
+        }
+    }
+}

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

@@ -4,7 +4,7 @@ using System;
 
 namespace Cysharp.Threading.Tasks
 {
-    public struct AsyncUnit : IEquatable<AsyncUnit>
+    public readonly struct AsyncUnit : IEquatable<AsyncUnit>
     {
         public static readonly AsyncUnit Default = new AsyncUnit();
 

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

@@ -368,8 +368,8 @@ namespace Cysharp.Threading.Tasks
                 readonly SingleConsumerUnboundedChannelReader parent;
                 CancellationToken cancellationToken1;
                 CancellationToken cancellationToken2;
-                CancellationTokenRegistration CancellationTokenRegistration1;
-                CancellationTokenRegistration CancellationTokenRegistration2;
+                CancellationTokenRegistration cancellationTokenRegistration1;
+                CancellationTokenRegistration cancellationTokenRegistration2;
 
                 T current;
                 bool cacheValue;
@@ -395,12 +395,12 @@ namespace Cysharp.Threading.Tasks
 
                     if (this.cancellationToken1.CanBeCanceled)
                     {
-                        this.cancellationToken1.RegisterWithoutCaptureExecutionContext(CancellationCallback1Delegate, this);
+                        this.cancellationTokenRegistration1 =  this.cancellationToken1.RegisterWithoutCaptureExecutionContext(CancellationCallback1Delegate, this);
                     }
 
                     if (this.cancellationToken2.CanBeCanceled)
                     {
-                        this.cancellationToken2.RegisterWithoutCaptureExecutionContext(CancellationCallback2Delegate, this);
+                        this.cancellationTokenRegistration2 = this.cancellationToken2.RegisterWithoutCaptureExecutionContext(CancellationCallback2Delegate, this);
                     }
 
                     running = true;
@@ -428,8 +428,8 @@ namespace Cysharp.Threading.Tasks
 
                 public UniTask DisposeAsync()
                 {
-                    CancellationTokenRegistration1.Dispose();
-                    CancellationTokenRegistration2.Dispose();
+                    cancellationTokenRegistration1.Dispose();
+                    cancellationTokenRegistration2.Dispose();
                     return default;
                 }
 

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

@@ -14,7 +14,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
     {
         // cache items.
         AutoResetUniTaskCompletionSource promise;
-        IMoveNextRunner runner;
+        internal IMoveNextRunner runner;
 
         // 1. Static Create method.
         [DebuggerHidden]
@@ -50,6 +50,8 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         [DebuggerHidden]
         public void SetException(Exception exception)
         {
+            var p = promise; // after return, promise will clear so require to store local.
+
             // runner is finished, return first.
             if (runner != null)
             {
@@ -57,9 +59,9 @@ namespace Cysharp.Threading.Tasks.CompilerServices
                 runner = null;
             }
 
-            if (promise != null)
+            if (p != null)
             {
-                promise.TrySetException(exception);
+                p.TrySetException(exception);
             }
             else
             {
@@ -71,6 +73,8 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         [DebuggerHidden]
         public void SetResult()
         {
+            var p = promise; // after return, promise will clear so require to store local.
+
             // runner is finished, return first.
             if (runner != null)
             {
@@ -78,9 +82,9 @@ namespace Cysharp.Threading.Tasks.CompilerServices
                 runner = null;
             }
 
-            if (promise != null)
+            if (p != null)
             {
-                promise.TrySetResult();
+                p.TrySetResult();
             }
         }
 
@@ -96,7 +100,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
             }
             if (runner == null)
             {
-                runner = MoveNextRunner<TStateMachine>.Create(ref stateMachine);
+                MoveNextRunner<TStateMachine>.SetRunner(ref this, ref stateMachine);
             }
 
             awaiter.OnCompleted(runner.CallMoveNext);
@@ -115,10 +119,10 @@ namespace Cysharp.Threading.Tasks.CompilerServices
             }
             if (runner == null)
             {
-                runner = MoveNextRunner<TStateMachine>.Create(ref stateMachine);
+                MoveNextRunner<TStateMachine>.SetRunner(ref this, ref stateMachine);
             }
 
-            awaiter.OnCompleted(runner.CallMoveNext);
+            awaiter.UnsafeOnCompleted(runner.CallMoveNext);
         }
 
         // 7. Start
@@ -158,7 +162,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
     {
         // cache items.
         AutoResetUniTaskCompletionSource<T> promise;
-        IMoveNextRunner runner;
+        internal IMoveNextRunner runner;
         T result;
 
         // 1. Static Create method.
@@ -194,6 +198,8 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         [DebuggerHidden]
         public void SetException(Exception exception)
         {
+            var p = promise; // after return, promise will clear so require to store local.
+
             // runner is finished, return first.
             if (runner != null)
             {
@@ -201,13 +207,13 @@ namespace Cysharp.Threading.Tasks.CompilerServices
                 runner = null;
             }
 
-            if (promise == null)
+            if (p == null)
             {
                 promise = AutoResetUniTaskCompletionSource<T>.CreateFromException(exception, out _);
             }
             else
             {
-                promise.TrySetException(exception);
+                p.TrySetException(exception);
             }
         }
 
@@ -215,6 +221,8 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         [DebuggerHidden]
         public void SetResult(T result)
         {
+            var p = promise; // after return, promise will clear so require to store local.
+
             // runner is finished, return first.
             if (runner != null)
             {
@@ -222,13 +230,14 @@ namespace Cysharp.Threading.Tasks.CompilerServices
                 runner = null;
             }
 
-            if (promise == null)
+            if (p == null)
             {
                 this.result = result;
-                return;
             }
-
-            promise.TrySetResult(result);
+            else
+            {
+                p.TrySetResult(result);
+            }
         }
 
         // 5. AwaitOnCompleted
@@ -243,7 +252,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
             }
             if (runner == null)
             {
-                runner = MoveNextRunner<TStateMachine>.Create(ref stateMachine);
+                MoveNextRunner<TStateMachine>.SetRunner(ref this, ref stateMachine);
             }
 
             awaiter.OnCompleted(runner.CallMoveNext);
@@ -262,10 +271,10 @@ namespace Cysharp.Threading.Tasks.CompilerServices
             }
             if (runner == null)
             {
-                runner = MoveNextRunner<TStateMachine>.Create(ref stateMachine);
+                MoveNextRunner<TStateMachine>.SetRunner(ref this, ref stateMachine);
             }
 
-            awaiter.OnCompleted(runner.CallMoveNext);
+            awaiter.UnsafeOnCompleted(runner.CallMoveNext);
         }
 
         // 7. Start

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

@@ -10,7 +10,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
 {
     public struct AsyncUniTaskVoidMethodBuilder
     {
-        IMoveNextRunner runner;
+        internal IMoveNextRunner runner;
 
         // 1. Static Create method.
         [DebuggerHidden]
@@ -65,7 +65,7 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         {
             if (runner == null)
             {
-                runner = MoveNextRunner<TStateMachine>.Create(ref stateMachine);
+                MoveNextRunner<TStateMachine>.SetRunner(ref this, ref stateMachine);
             }
 
             awaiter.OnCompleted(runner.CallMoveNext);
@@ -80,10 +80,10 @@ namespace Cysharp.Threading.Tasks.CompilerServices
         {
             if (runner == null)
             {
-                runner = MoveNextRunner<TStateMachine>.Create(ref stateMachine);
+                MoveNextRunner<TStateMachine>.SetRunner(ref this, ref stateMachine);
             }
 
-            awaiter.OnCompleted(runner.CallMoveNext);
+            awaiter.UnsafeOnCompleted(runner.CallMoveNext);
         }
 
         // 7. Start

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

@@ -26,19 +26,48 @@ namespace Cysharp.Threading.Tasks.CompilerServices
 
         MoveNextRunner()
         {
-            callMoveNext = MoveNext;
+            callMoveNext = Run;
         }
 
-        public static MoveNextRunner<TStateMachine> Create(ref TStateMachine stateMachine)
+        public static void SetRunner(ref AsyncUniTaskMethodBuilder builder, ref TStateMachine stateMachine)
         {
-            var result = pool.TryRent() ?? new MoveNextRunner<TStateMachine>();
-            result.stateMachine = stateMachine;
-            return result;
+            var result = pool.TryRent();
+            if (result == null)
+            {
+                result = new MoveNextRunner<TStateMachine>();
+            }
+
+            builder.runner = result; // set runner before copied.
+            result.stateMachine = stateMachine; // copy struct StateMachine(in release build).
+        }
+
+        public static void SetRunner<T>(ref AsyncUniTaskMethodBuilder<T> builder, ref TStateMachine stateMachine)
+        {
+            var result = pool.TryRent();
+            if (result == null)
+            {
+                result = new MoveNextRunner<TStateMachine>();
+            }
+
+            builder.runner = result; // set runner before copied.
+            result.stateMachine = stateMachine; // copy struct StateMachine(in release build).
+        }
+
+        public static void SetRunner(ref AsyncUniTaskVoidMethodBuilder builder, ref TStateMachine stateMachine)
+        {
+            var result = pool.TryRent();
+            if (result == null)
+            {
+                result = new MoveNextRunner<TStateMachine>();
+            }
+
+            builder.runner = result; // set runner before copied.
+            result.stateMachine = stateMachine; // copy struct StateMachine(in release build).
         }
 
         [DebuggerHidden]
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        void MoveNext()
+        void Run()
         {
             stateMachine.MoveNext();
         }

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

@@ -14,16 +14,19 @@ namespace Cysharp.Threading.Tasks
     {
         public static UniTask.Awaiter GetAwaiter(this IEnumerator enumerator)
         {
+            Error.ThrowArgumentNullException(enumerator, nameof(enumerator));
             return new UniTask(EnumeratorPromise.Create(enumerator, PlayerLoopTiming.Update, CancellationToken.None, out var token), token).GetAwaiter();
         }
 
-        public static UniTask ToUniTask(this IEnumerator enumerator)
+        public static UniTask WithCancellation(this IEnumerator enumerator, CancellationToken cancellationToken)
         {
-            return new UniTask(EnumeratorPromise.Create(enumerator, PlayerLoopTiming.Update, CancellationToken.None, out var token), token);
+            Error.ThrowArgumentNullException(enumerator, nameof(enumerator));
+            return new UniTask(EnumeratorPromise.Create(enumerator, PlayerLoopTiming.Update, cancellationToken, out var token), token);
         }
 
-        public static UniTask ConfigureAwait(this IEnumerator enumerator, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
+        public static UniTask ToUniTask(this IEnumerator enumerator, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
         {
+            Error.ThrowArgumentNullException(enumerator, nameof(enumerator));
             return new UniTask(EnumeratorPromise.Create(enumerator, timing, cancellationToken, out var token), token);
         }
 

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

@@ -13,21 +13,23 @@ namespace Cysharp.Threading.Tasks
 {
     public static class AddressableAsyncExtensions
     {
-#region AsyncOperationHandle
+        #region AsyncOperationHandle
 
         public static AsyncOperationHandleAwaiter GetAwaiter(this AsyncOperationHandle handle)
         {
             return new AsyncOperationHandleAwaiter(handle);
         }
 
-        public static UniTask ToUniTask(this AsyncOperationHandle handle)
+        public static UniTask WithCancellation(this AsyncOperationHandle handle, CancellationToken cancellationToken)
         {
-            return new UniTask(AsyncOperationHandleConfiguredSource.Create(handle, PlayerLoopTiming.Update, null, CancellationToken.None, out var token), token);
+            if (handle.IsDone) return UniTask.CompletedTask;
+            return new UniTask(AsyncOperationHandleConfiguredSource.Create(handle, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
         }
 
-        public static UniTask ConfigureAwait(this AsyncOperationHandle handle, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellation = default(CancellationToken))
+        public static UniTask ToUniTask(this AsyncOperationHandle handle, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
         {
-            return new UniTask(AsyncOperationHandleConfiguredSource.Create(handle, timing, progress, cancellation, out var token), token);
+            if (handle.IsDone) return UniTask.CompletedTask;
+            return new UniTask(AsyncOperationHandleConfiguredSource.Create(handle, timing, progress, cancellationToken, out var token), token);
         }
 
         public struct AsyncOperationHandleAwaiter : ICriticalNotifyCompletion
@@ -75,7 +77,7 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-        class AsyncOperationHandleConfiguredSource : IUniTaskSource, IPlayerLoopItem, IPromisePoolItem
+        sealed class AsyncOperationHandleConfiguredSource : IUniTaskSource, IPlayerLoopItem, IPromisePoolItem
         {
             static readonly PromisePool<AsyncOperationHandleConfiguredSource> pool = new PromisePool<AsyncOperationHandleConfiguredSource>();
 
@@ -185,23 +187,25 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-#endregion
+        #endregion
 
-#region AsyncOperationHandle_T
+        #region AsyncOperationHandle_T
 
         public static AsyncOperationHandleAwaiter<T> GetAwaiter<T>(this AsyncOperationHandle<T> handle)
         {
             return new AsyncOperationHandleAwaiter<T>(handle);
         }
 
-        public static UniTask<T> ToUniTask<T>(this AsyncOperationHandle<T> handle)
+        public static UniTask<T> WithCancellation<T>(this AsyncOperationHandle<T> handle, CancellationToken cancellationToken)
         {
-            return new UniTask<T>(AsyncOperationHandleConfiguredSource<T>.Create(handle, PlayerLoopTiming.Update, null, CancellationToken.None, out var token), token);
+            if (handle.IsDone) return UniTask.FromResult(handle.Result);
+            return new UniTask<T>(AsyncOperationHandleConfiguredSource<T>.Create(handle, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
         }
 
-        public static UniTask<T> ConfigureAwait<T>(this AsyncOperationHandle<T> handle, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellation = default(CancellationToken))
+        public static UniTask<T> ToUniTask<T>(this AsyncOperationHandle<T> handle, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
         {
-            return new UniTask<T>(AsyncOperationHandleConfiguredSource<T>.Create(handle, timing, progress, cancellation, out var token), token);
+            if (handle.IsDone) return UniTask.FromResult(handle.Result);
+            return new UniTask<T>(AsyncOperationHandleConfiguredSource<T>.Create(handle, timing, progress, cancellationToken, out var token), token);
         }
 
         public struct AsyncOperationHandleAwaiter<T> : ICriticalNotifyCompletion
@@ -250,7 +254,7 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-        class AsyncOperationHandleConfiguredSource<T> : IUniTaskSource<T>, IPlayerLoopItem, IPromisePoolItem
+        sealed class AsyncOperationHandleConfiguredSource<T> : IUniTaskSource<T>, IPlayerLoopItem, IPromisePoolItem
         {
             static readonly PromisePool<AsyncOperationHandleConfiguredSource<T>> pool = new PromisePool<AsyncOperationHandleConfiguredSource<T>>();
 
@@ -366,7 +370,7 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-#endregion
+        #endregion
     }
 }
 

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

@@ -0,0 +1,239 @@
+// asmdef Version Defines, enabled when com.demigiant.dotween is imported.
+
+#if UNITASK_DOTWEEN_SUPPORT
+
+using Cysharp.Threading.Tasks.Internal;
+using DG.Tweening;
+using System;
+using System.Runtime.CompilerServices;
+using System.Threading;
+
+namespace Cysharp.Threading.Tasks
+{
+    // The idea of TweenCancelBehaviour is borrowed from https://www.shibuya24.info/entry/dotween_async_await
+    public enum TweenCancelBehaviour
+    {
+        Kill,
+        KillWithCompleteCallback,
+        Complete,
+        CompleteWithSeqeunceCallback,
+        CancelAwait,
+
+        // AndCancelAwait
+        KillAndCancelAwait,
+        KillWithCompleteCallbackAndCancelAwait,
+        CompleteAndCancelAwait,
+        CompleteWithSeqeunceCallbackAndCancelAwait
+    }
+
+    public static class DOTweenAsyncExtensions
+    {
+        public static TweenAwaiter GetAwaiter(this Tween tween)
+        {
+            return new TweenAwaiter(tween);
+        }
+
+        public static UniTask WithCancellation(this Tween tween, CancellationToken cancellationToken)
+        {
+            Error.ThrowArgumentNullException(tween, nameof(tween));
+
+            if (!tween.IsActive()) return UniTask.CompletedTask;
+            return new UniTask(TweenConfiguredSource.Create(tween, TweenCancelBehaviour.Kill, cancellationToken, out var token), token);
+        }
+
+        public static UniTask ToUniTask(this Tween tween, TweenCancelBehaviour tweenCancelBehaviour = TweenCancelBehaviour.Kill, CancellationToken cancellationToken = default)
+        {
+            Error.ThrowArgumentNullException(tween, nameof(tween));
+
+            if (!tween.IsActive()) return UniTask.CompletedTask;
+            return new UniTask(TweenConfiguredSource.Create(tween, tweenCancelBehaviour, cancellationToken, out var token), token);
+        }
+
+        public struct TweenAwaiter : ICriticalNotifyCompletion
+        {
+            readonly Tween tween;
+
+            // killed(non active) as completed.
+            public bool IsCompleted => !tween.IsActive();
+
+            public TweenAwaiter(Tween tween)
+            {
+                this.tween = tween;
+            }
+
+            public TweenAwaiter GetAwaiter()
+            {
+                return this;
+            }
+
+            public void GetResult()
+            {
+            }
+
+            public void OnCompleted(System.Action continuation)
+            {
+                UnsafeOnCompleted(continuation);
+            }
+
+            public void UnsafeOnCompleted(System.Action continuation)
+            {
+                // convert Action -> TweenCallback allocation.
+                // onKill is called after OnCompleted, both Complete(false/true) and Kill(false/true).
+                tween.onKill = new TweenCallback(continuation);
+            }
+        }
+
+        sealed class TweenConfiguredSource : IUniTaskSource, IPromisePoolItem
+        {
+            static readonly PromisePool<TweenConfiguredSource> pool = new PromisePool<TweenConfiguredSource>();
+            static readonly Action<object> CancellationCallbackDelegate = CancellationCallback;
+            static readonly TweenCallback EmptyTweenCallback = () => { };
+
+            Tween tween;
+            TweenCancelBehaviour cancelBehaviour;
+            CancellationToken cancellationToken;
+            bool canceled;
+
+            CancellationTokenRegistration cancellationTokenRegistration;
+            UniTaskCompletionSourceCore<AsyncUnit> core;
+
+            TweenConfiguredSource()
+            {
+
+            }
+
+            public static IUniTaskSource Create(Tween tween, TweenCancelBehaviour cancelBehaviour, CancellationToken cancellationToken, out short token)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    return AutoResetUniTaskCompletionSource.CreateFromCanceled(cancellationToken, out token);
+                }
+
+                var result = pool.TryRent() ?? new TweenConfiguredSource();
+
+                result.tween = tween;
+                result.cancelBehaviour = cancelBehaviour;
+                result.cancellationToken = cancellationToken;
+
+                TaskTracker.TrackActiveTask(result, 3);
+
+                result.RegisterEvent();
+
+                token = result.core.Version;
+                return result;
+            }
+
+            void RegisterEvent()
+            {
+                if (cancellationToken.CanBeCanceled)
+                {
+                    cancellationTokenRegistration = cancellationToken.RegisterWithoutCaptureExecutionContext(CancellationCallbackDelegate, this);
+                }
+
+                // allocate delegate.
+                tween.OnKill(new TweenCallback(OnKill));
+            }
+
+            void OnKill()
+            {
+                cancellationTokenRegistration.Dispose();
+                if (canceled)
+                {
+                    core.TrySetCanceled(cancellationToken);
+                }
+                else
+                {
+                    core.TrySetResult(AsyncUnit.Default);
+                }
+            }
+
+            static void CancellationCallback(object state)
+            {
+                var self = (TweenConfiguredSource)state;
+
+                switch (self.cancelBehaviour)
+                {
+                    case TweenCancelBehaviour.Kill:
+                    default:
+                        self.tween.Kill(false);
+                        break;
+                    case TweenCancelBehaviour.KillAndCancelAwait:
+                        self.canceled = true;
+                        self.tween.Kill(false);
+                        break;
+                    case TweenCancelBehaviour.KillWithCompleteCallback:
+                        self.tween.Kill(true);
+                        break;
+                    case TweenCancelBehaviour.KillWithCompleteCallbackAndCancelAwait:
+                        self.canceled = true;
+                        self.tween.Kill(true);
+                        break;
+                    case TweenCancelBehaviour.Complete:
+                        self.tween.Complete(false);
+                        break;
+                    case TweenCancelBehaviour.CompleteAndCancelAwait:
+                        self.canceled = true;
+                        self.tween.Complete(false);
+                        break;
+                    case TweenCancelBehaviour.CompleteWithSeqeunceCallback:
+                        self.tween.Complete(true);
+                        break;
+                    case TweenCancelBehaviour.CompleteWithSeqeunceCallbackAndCancelAwait:
+                        self.canceled = true;
+                        self.tween.Complete(true);
+                        break;
+                    case TweenCancelBehaviour.CancelAwait:
+                        self.tween.onKill = EmptyTweenCallback; // replace to empty(avoid callback after Caceled(instance is returned to pool.)
+                        self.core.TrySetCanceled(self.cancellationToken);
+                        break;
+                }
+            }
+
+            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 void Reset()
+            {
+                core.Reset();
+                tween = default;
+                cancellationToken = default;
+            }
+
+            ~TweenConfiguredSource()
+            {
+                if (pool.TryReturn(this))
+                {
+                    GC.ReRegisterForFinalize(this);
+                }
+            }
+        }
+    }
+}
+
+#endif

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

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 1f448d5bc5b232e4f98d89d5d1832e8e
+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/IUniTaskSource.cs

@@ -19,17 +19,75 @@ namespace Cysharp.Threading.Tasks
 
     // similar as IValueTaskSource
     public interface IUniTaskSource
+#if !UNITY_2018_3_OR_NEWER
+        : System.Threading.Tasks.Sources.IValueTaskSource
+#pragma warning disable CS0108
+#endif
     {
         UniTaskStatus GetStatus(short token);
         void OnCompleted(Action<object> continuation, object state, short token);
         void GetResult(short token);
 
         UniTaskStatus UnsafeGetStatus(); // only for debug use.
+
+#if !UNITY_2018_3_OR_NEWER
+#pragma warning restore CS0108
+
+        System.Threading.Tasks.Sources.ValueTaskSourceStatus System.Threading.Tasks.Sources.IValueTaskSource.GetStatus(short token)
+        {
+            return (System.Threading.Tasks.Sources.ValueTaskSourceStatus)(int)((IUniTaskSource)this).GetStatus(token);
+        }
+
+        void System.Threading.Tasks.Sources.IValueTaskSource.GetResult(short token)
+        {
+            ((IUniTaskSource)this).GetResult(token);
+        }
+
+        void System.Threading.Tasks.Sources.IValueTaskSource.OnCompleted(Action<object> continuation, object state, short token, System.Threading.Tasks.Sources.ValueTaskSourceOnCompletedFlags flags)
+        {
+            // ignore flags, always none.
+            ((IUniTaskSource)this).OnCompleted(continuation, state, token);
+        }
+
+#endif
     }
 
     public interface IUniTaskSource<out T> : IUniTaskSource
+#if !UNITY_2018_3_OR_NEWER
+        , System.Threading.Tasks.Sources.IValueTaskSource<T>
+#endif
     {
         new T GetResult(short token);
+
+#if !UNITY_2018_3_OR_NEWER
+
+        new public UniTaskStatus GetStatus(short token)
+        {
+            return ((IUniTaskSource)this).GetStatus(token);
+        }
+
+        new public void OnCompleted(Action<object> continuation, object state, short token)
+        {
+            ((IUniTaskSource)this).OnCompleted(continuation, state, token);
+        }
+
+        System.Threading.Tasks.Sources.ValueTaskSourceStatus System.Threading.Tasks.Sources.IValueTaskSource<T>.GetStatus(short token)
+        {
+            return (System.Threading.Tasks.Sources.ValueTaskSourceStatus)(int)((IUniTaskSource)this).GetStatus(token);
+        }
+
+        T System.Threading.Tasks.Sources.IValueTaskSource<T>.GetResult(short token)
+        {
+            return ((IUniTaskSource<T>)this).GetResult(token);
+        }
+
+        void System.Threading.Tasks.Sources.IValueTaskSource<T>.OnCompleted(Action<object> continuation, object state, short token, System.Threading.Tasks.Sources.ValueTaskSourceOnCompletedFlags flags)
+        {
+            // ignore flags, always none.
+            ((IUniTaskSource)this).OnCompleted(continuation, state, token);
+        }
+
+#endif
     }
 
     public static class UniTaskStatusExtensions

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

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 6cb07f6e88287e34d9b9301a572284a5
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/CombineLatest.tt

@@ -0,0 +1,221 @@
+<#@ template debug="false" hostspecific="false" language="C#" #>
+<#@ assembly name="System.Core" #>
+<#@ import namespace="System.Linq" #>
+<#@ import namespace="System.Text" #>
+<#@ import namespace="System.Collections.Generic" #>
+<#@ output extension=".cs" #>
+<#
+    var tMax = 15;
+    Func<int, string> typeArgs = x => string.Join(", ", Enumerable.Range(1, x).Select(x => $"T{x}")) + ", TResult";
+    Func<int, string> paramArgs = x => string.Join(", ", Enumerable.Range(1, x).Select(x => $"IUniTaskAsyncEnumerable<T{x}> source{x}"));
+    Func<int, string> parameters = x => string.Join(", ", Enumerable.Range(1, x).Select(x => $"source{x}"));
+
+
+#>
+using Cysharp.Threading.Tasks.Internal;
+using System;
+using System.Threading;
+
+namespace Cysharp.Threading.Tasks.Linq
+{
+    public static partial class UniTaskAsyncEnumerable
+    {
+<# for(var i = 2; i <= tMax; i++) { #>
+        public static IUniTaskAsyncEnumerable<TResult> CombineLatest<<#= typeArgs(i) #>>(this <#= paramArgs(i) #>, Func<<#= typeArgs(i) #>> resultSelector)
+        {
+<# for(var j = 1; j <= i; j++) { #>
+            Error.ThrowArgumentNullException(source<#= j #>, nameof(source<#= j #>));
+<# } #>
+            Error.ThrowArgumentNullException(resultSelector, nameof(resultSelector));
+
+            return new CombineLatest<<#= typeArgs(i) #>>(<#= parameters(i) #>, resultSelector);
+        }
+
+<# } #>
+    }
+
+<# for(var i = 2; i <= tMax; i++) { #>
+    internal class CombineLatest<<#= typeArgs(i) #>> : IUniTaskAsyncEnumerable<TResult>
+    {
+<# for(var j = 1; j <= i; j++) { #>
+        readonly IUniTaskAsyncEnumerable<T<#= j #>> source<#= j #>;
+<# } #>        
+        readonly Func<<#= typeArgs(i) #>> resultSelector;
+
+        public CombineLatest(<#= paramArgs(i) #>, Func<<#= typeArgs(i) #>> resultSelector)
+        {
+<# for(var j = 1; j <= i; j++) { #>
+            this.source<#= j #> = source<#= j #>;
+<# } #>        
+            this.resultSelector = resultSelector;
+        }
+
+        public IUniTaskAsyncEnumerator<TResult> GetAsyncEnumerator(CancellationToken cancellationToken = default)
+        {
+            return new _CombineLatest(<#= parameters(i) #>, resultSelector, cancellationToken);
+        }
+
+        class _CombineLatest : MoveNextSource, IUniTaskAsyncEnumerator<TResult>
+        {
+<# for(var j = 1; j <= i; j++) { #>
+            static readonly Action<object> Completed<#= j #>Delegate = Completed<#= j #>;
+<# } #>
+            const int CompleteCount = <#= i #>;
+
+<# for(var j = 1; j <= i; j++) { #>
+            readonly IUniTaskAsyncEnumerable<T<#= j #>> source<#= j #>;
+<# } #>       
+            readonly Func<<#= typeArgs(i) #>> resultSelector;
+            CancellationToken cancellationToken;
+
+<# for(var j = 1; j <= i; j++) { #>
+            IUniTaskAsyncEnumerator<T<#= j #>> enumerator<#= j #>;
+            UniTask<bool>.Awaiter awaiter<#= j #>;
+            bool hasCurrent<#= j #>;
+            bool running<#= j #>;
+            T<#= j #> current<#= j #>;
+
+<# } #>
+            int completedCount;
+            bool syncRunning;
+            TResult result;
+
+            public _CombineLatest(<#= paramArgs(i) #>, Func<<#= typeArgs(i) #>> resultSelector, CancellationToken cancellationToken)
+            {
+<# for(var j = 1; j <= i; j++) { #>
+                this.source<#= j #> = source<#= j #>;
+<# } #>                
+                this.resultSelector = resultSelector;
+                this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
+            }
+
+            public TResult Current => result;
+
+            public UniTask<bool> MoveNextAsync()
+            {
+                cancellationToken.ThrowIfCancellationRequested();
+                if (completedCount == CompleteCount) return CompletedTasks.False;
+
+                if (enumerator1 == null)
+                {
+<# for(var j = 1; j <= i; j++) { #>
+                    enumerator<#= j #> = source<#= j #>.GetAsyncEnumerator(cancellationToken);
+<# } #>
+                }
+
+                completionSource.Reset();
+
+                AGAIN:
+                syncRunning = true;
+<# for(var j = 1; j <= i; j++) { #>
+                if (!running<#= j #>)
+                {
+                    running<#= j #> = true;
+                    awaiter<#= j #> = enumerator<#= j #>.MoveNextAsync().GetAwaiter();
+                    if (awaiter<#= j #>.IsCompleted)
+                    {
+                        Completed<#= j #>(this);
+                    }
+                    else
+                    {
+                        awaiter<#= j #>.SourceOnCompleted(Completed<#= j #>Delegate, this);
+                    }
+                }
+<# } #>
+
+                if (<#= string.Join(" || ", Enumerable.Range(1, i).Select(x => $"!running{x}")) #>)
+                {
+                    goto AGAIN;
+                }
+                syncRunning = false;
+
+                return new UniTask<bool>(this, completionSource.Version);
+            }
+
+<# for(var j = 1; j <= i; j++) { #>
+            static void Completed<#= j #>(object state)
+            {
+                var self = (_CombineLatest)state;
+                self.running<#= j #> = false;
+
+                try
+                {
+                    if (self.awaiter<#= j #>.GetResult())
+                    {
+                        self.hasCurrent<#= j #> = true;
+                        self.current<#= j #> = self.enumerator<#= j #>.Current;
+                        goto SUCCESS;
+                    }
+                    else
+                    {
+                        self.running<#= j #> = true; // as complete, no more call MoveNextAsync.
+                        if (Interlocked.Increment(ref self.completedCount) == CompleteCount)
+                        {
+                            goto COMPLETE;
+                        }
+                        return;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    self.running<#= j #> = true; // as complete, no more call MoveNextAsync.
+                    self.completedCount = CompleteCount;
+                    self.completionSource.TrySetException(ex);
+                    return;
+                }
+
+                SUCCESS:
+                if (!self.TrySetResult())
+                {
+                    if (self.syncRunning) return;
+                    self.running<#= j #> = true; // as complete, no more call MoveNextAsync.
+                    try
+                    {
+                        self.awaiter<#= j #> = self.enumerator<#= j #>.MoveNextAsync().GetAwaiter();
+                    }
+                    catch (Exception ex)
+                    {
+                        self.completedCount = CompleteCount;
+                        self.completionSource.TrySetException(ex);
+                        return;
+                    }
+
+                    self.awaiter<#= j #>.SourceOnCompleted(Completed<#= j #>Delegate, self);
+                }
+                return;
+                COMPLETE:
+                self.completionSource.TrySetResult(false);
+                return;
+            }
+
+<# } #>
+            bool TrySetResult()
+            {
+                if (<#= string.Join(" && ", Enumerable.Range(1, i).Select(x => $"hasCurrent{x}")) #>)
+                {
+                    result = resultSelector(<#= string.Join(", ", Enumerable.Range(1, i).Select(x => $"current{x}")) #>);
+                    completionSource.TrySetResult(true);
+                    return true;
+                }
+                else
+                {
+                    return false;
+                }
+            }
+
+            public async UniTask DisposeAsync()
+            {
+                TaskTracker.RemoveTracking(this);
+<# for(var j = 1; j <= i; j++) { #>
+                if (enumerator<#= j #> != null)
+                {
+                    await enumerator<#= j #>.DisposeAsync();
+                }
+<# } #>
+            }
+        }
+    }
+
+<# } #>
+}

src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/CombineLatest.tt.meta

@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: b1b8cfa9d17af814a971ee2224aaaaa2
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

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/Pairwise.cs

@@ -0,0 +1,128 @@
+using Cysharp.Threading.Tasks.Internal;
+using System;
+using System.Threading;
+
+namespace Cysharp.Threading.Tasks.Linq
+{
+    public static partial class UniTaskAsyncEnumerable
+    {
+        public static IUniTaskAsyncEnumerable<(TSource, TSource)> Pairwise<TSource>(this IUniTaskAsyncEnumerable<TSource> source)
+        {
+            Error.ThrowArgumentNullException(source, nameof(source));
+
+            return new Pairwise<TSource>(source);
+        }
+    }
+
+    internal sealed class Pairwise<TSource> : IUniTaskAsyncEnumerable<(TSource, TSource)>
+    {
+        readonly IUniTaskAsyncEnumerable<TSource> source;
+
+        public Pairwise(IUniTaskAsyncEnumerable<TSource> source)
+        {
+            this.source = source;
+        }
+
+        public IUniTaskAsyncEnumerator<(TSource, TSource)> GetAsyncEnumerator(CancellationToken cancellationToken = default)
+        {
+            return new _Pairwise(source, cancellationToken);
+        }
+
+        sealed class _Pairwise : MoveNextSource, IUniTaskAsyncEnumerator<(TSource, TSource)>
+        {
+            static readonly Action<object> MoveNextCoreDelegate = MoveNextCore;
+
+            readonly IUniTaskAsyncEnumerable<TSource> source;
+            CancellationToken cancellationToken;
+
+            IUniTaskAsyncEnumerator<TSource> enumerator;
+            UniTask<bool>.Awaiter awaiter;
+
+            TSource prev;
+            bool isFirst;
+
+            public _Pairwise(IUniTaskAsyncEnumerable<TSource> source, CancellationToken cancellationToken)
+            {
+                this.source = source;
+                this.cancellationToken = cancellationToken;
+                TaskTracker.TrackActiveTask(this, 3);
+            }
+
+            public (TSource, TSource) Current { get; private set; }
+
+            public UniTask<bool> MoveNextAsync()
+            {
+                cancellationToken.ThrowIfCancellationRequested();
+
+                if (enumerator == null)
+                {
+                    isFirst = true;
+                    enumerator = source.GetAsyncEnumerator(cancellationToken);
+                }
+
+                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 = (_Pairwise)state;
+
+                if (self.TryGetResult(self.awaiter, out var result))
+                {
+                    if (result)
+                    {
+                        if (self.isFirst)
+                        {
+                            self.isFirst = false;
+                            self.prev = self.enumerator.Current;
+                            self.SourceMoveNext(); // run again. okay to use recursive(only one more).
+                        }
+                        else
+                        {
+                            var p = self.prev;
+                            self.prev = self.enumerator.Current;
+                            self.Current = (p, self.prev);
+                            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/Pairwise.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: cddbf051d2a88f549986c468b23214af
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

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/UnityExtensions/EveryUpdate.cs

@@ -1,7 +1,4 @@
-using Cysharp.Threading.Tasks.Internal;
-using System;
-using System.Collections.Generic;
-using System.Threading;
+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/PlayerLoopHelper.cs

@@ -200,27 +200,43 @@ namespace Cysharp.Threading.Tasks
 
 
 #if UNITY_EDITOR
+
         [InitializeOnLoadMethod]
         static void InitOnEditor()
         {
-            //Execute the play mode init method
+            // Execute the play mode init method
             Init();
 
-            //register an Editor update delegate, used to forcing playerLoop update
+            // register an Editor update delegate, used to forcing playerLoop update
             EditorApplication.update += ForceEditorPlayerLoopUpdate;
         }
 
         private static void ForceEditorPlayerLoopUpdate()
         {
-            if (EditorApplication.isPlayingOrWillChangePlaymode || EditorApplication.isCompiling ||
-                EditorApplication.isUpdating)
+            if (EditorApplication.isPlayingOrWillChangePlaymode || EditorApplication.isCompiling || EditorApplication.isUpdating)
             {
                 // Not in Edit mode, don't interfere
                 return;
             }
 
-            //force unity to update PlayerLoop callbacks
-            EditorApplication.QueuePlayerLoopUpdate();
+            // EditorApplication.QueuePlayerLoopUpdate causes performance issue, don't call directly.
+            // EditorApplication.QueuePlayerLoopUpdate();
+
+            if (yielders != null)
+            {
+                foreach (var item in yielders)
+                {
+                    if (item != null) item.Run();
+                }
+            }
+
+            if (runners != null)
+            {
+                foreach (var item in runners)
+                {
+                    if (item != null) item.Run();
+                }
+            }
         }
 
 #endif

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

@@ -7,8 +7,9 @@ namespace Cysharp.Threading.Tasks
     public interface ITriggerHandler<T>
     {
         void OnNext(T value);
-        void OnCanceled(CancellationToken cancellationToken);
+        void OnError(Exception ex);
         void OnCompleted();
+        void OnCanceled(CancellationToken cancellationToken);
     }
 
     // be careful to use, itself is struct.
@@ -207,6 +208,67 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
+        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)

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

@@ -89,6 +89,11 @@ namespace Cysharp.Threading.Tasks.Triggers
                 completionSource.TrySetResult(false);
             }
 
+            public void OnError(Exception ex)
+            {
+                completionSource.TrySetException(ex);
+            }
+
             static void CancellationCallback(object state)
             {
                 var self = (AsyncTriggerEnumerator)state;
@@ -273,6 +278,11 @@ namespace Cysharp.Threading.Tasks.Triggers
             core.TrySetCanceled(CancellationToken.None);
         }
 
+        void ITriggerHandler<T>.OnError(Exception ex)
+        {
+            core.TrySetException(ex);
+        }
+
         void IUniTaskSource.GetResult(short token)
         {
             ((IUniTaskSource<T>)this).GetResult(token);

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

@@ -105,34 +105,67 @@ namespace Cysharp.Threading.Tasks
         /// helper of create add UniTaskVoid to delegate.
         /// For example: FooEvent += () => UniTask.Void(async () => { /* */ })
         /// </summary>
-        public static void Void(Func<UniTask> asyncAction)
+        public static void Void(Func<UniTaskVoid> asyncAction)
         {
             asyncAction().Forget();
         }
 
-        public static Action VoidAction(Func<UniTask> asyncAction)
+        /// <summary>
+        /// helper of create add UniTaskVoid to delegate.
+        /// </summary>
+        public static void Void(Func<CancellationToken, UniTaskVoid> asyncAction, CancellationToken cancellationToken)
         {
-            return () => Void(asyncAction);
+            asyncAction(cancellationToken).Forget();
         }
 
-#if UNITY_2018_3_OR_NEWER
-
-        public static UnityEngine.Events.UnityAction VoidUnityAction(Func<UniTask> asyncAction)
-        {
-            return () => Void(asyncAction);
-        }
-
-#endif
-
         /// <summary>
         /// helper of create add UniTaskVoid to delegate.
         /// For example: FooEvent += (sender, e) => UniTask.Void(async arg => { /* */ }, (sender, e))
         /// </summary>
-        public static void Void<T>(Func<T, UniTask> asyncAction, T state)
+        public static void Void<T>(Func<T, UniTaskVoid> asyncAction, T state)
         {
             asyncAction(state).Forget();
         }
 
+        /// <summary>
+        /// helper of create add UniTaskVoid to delegate.
+        /// For example: FooAction = UniTask.Action(async () => { /* */ })
+        /// </summary>
+        public static Action Action(Func<UniTaskVoid> asyncAction)
+        {
+            return () => asyncAction().Forget();
+        }
+
+        /// <summary>
+        /// helper of create add UniTaskVoid to delegate.
+        /// </summary>
+        public static Action Action(Func<CancellationToken, UniTaskVoid> asyncAction, CancellationToken cancellationToken)
+        {
+            return () => asyncAction(cancellationToken).Forget();
+        }
+
+#if UNITY_2018_3_OR_NEWER
+
+        /// <summary>
+        /// Create async void(UniTaskVoid) UnityAction.
+        /// For exampe: onClick.AddListener(UniTask.UnityAction(async () => { /* */ } ))
+        /// </summary>
+        public static UnityEngine.Events.UnityAction UnityAction(Func<UniTaskVoid> asyncAction)
+        {
+            return () => asyncAction().Forget();
+        }
+
+        /// <summary>
+        /// Create async void(UniTaskVoid) UnityAction.
+        /// For exampe: onClick.AddListener(UniTask.UnityAction(FooAsync, this.GetCancellationTokenOnDestroy()))
+        /// </summary>
+        public static UnityEngine.Events.UnityAction UnityAction(Func<CancellationToken, UniTaskVoid> asyncAction, CancellationToken cancellationToken)
+        {
+            return () => asyncAction(cancellationToken).Forget();
+        }
+
+#endif
+
         /// <summary>
         /// Defer the task creation just before call await.
         /// </summary>

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

@@ -28,7 +28,7 @@ namespace Cysharp.Threading.Tasks
           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)
@@ -330,6 +330,7 @@ namespace Cysharp.Threading.Tasks
             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;
@@ -351,6 +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>();
@@ -399,7 +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;

src/UniTask/Assets/Plugins/UniTask/Runtime/UniTask.asmdef

@@ -2,7 +2,8 @@
     "name": "UniTask",
     "references": [
         "Unity.ResourceManager",
-        "Unity.TextMeshPro"
+        "Unity.TextMeshPro",
+        "DOTween.Modules"
     ],
     "includePlatforms": [],
     "excludePlatforms": [],
@@ -21,6 +22,11 @@
             "name": "com.unity.textmeshpro",
             "expression": "",
             "define": "UNITASK_TEXTMESHPRO_SUPPORT"
+        },
+        {
+            "name": "com.demigiant.dotween",
+            "expression": "",
+            "define": "UNITASK_DOTWEEN_SUPPORT"
         }
     ],
     "noEngineReferences": false

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

@@ -1,13 +1,12 @@
 #pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
 #pragma warning disable CS0436
 
+using Cysharp.Threading.Tasks.CompilerServices;
 using System;
-using System.Collections.Generic;
 using System.Diagnostics;
 using System.Runtime.CompilerServices;
 using System.Runtime.ExceptionServices;
-using Cysharp.Threading.Tasks.CompilerServices;
-using Cysharp.Threading.Tasks.Internal;
+using System.Runtime.InteropServices;
 
 namespace Cysharp.Threading.Tasks
 {
@@ -26,6 +25,7 @@ namespace Cysharp.Threading.Tasks
     /// Lightweight unity specified task-like object.
     /// </summary>
     [AsyncMethodBuilder(typeof(AsyncUniTaskMethodBuilder))]
+    [StructLayout(LayoutKind.Auto)]
     public readonly partial struct UniTask
     {
         readonly IUniTaskSource source;
@@ -68,6 +68,20 @@ namespace Cysharp.Threading.Tasks
             return new UniTask<bool>(new IsCanceledSource(source), token);
         }
 
+#if !UNITY_2018_3_OR_NEWER
+
+        public static implicit operator System.Threading.Tasks.ValueTask(in UniTask self)
+        {
+            if (self.source == null)
+            {
+                return default;
+            }
+
+            return new System.Threading.Tasks.ValueTask(self.source, self.token);
+        }
+
+#endif
+
         public override string ToString()
         {
             if (source == null) return "()";
@@ -339,6 +353,7 @@ namespace Cysharp.Threading.Tasks
     /// Lightweight unity specified task-like object.
     /// </summary>
     [AsyncMethodBuilder(typeof(AsyncUniTaskMethodBuilder<>))]
+    [StructLayout(LayoutKind.Auto)]
     public readonly struct UniTask<T>
     {
         readonly IUniTaskSource<T> source;
@@ -414,6 +429,20 @@ namespace Cysharp.Threading.Tasks
             return self.AsUniTask();
         }
 
+#if !UNITY_2018_3_OR_NEWER
+
+        public static implicit operator System.Threading.Tasks.ValueTask<T>(in UniTask<T> self)
+        {
+            if (self.source == null)
+            {
+                return new System.Threading.Tasks.ValueTask<T>(self.result);
+            }
+
+            return new System.Threading.Tasks.ValueTask<T>(self.source, self.token);
+        }
+
+#endif
+
         /// <summary>
         /// returns (bool IsCanceled, T Result) instead of throws OperationCanceledException.
         /// </summary>

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

@@ -123,7 +123,14 @@ namespace Cysharp.Threading.Tasks
             {
                 // setup result
                 this.hasUnhandledError = true;
-                this.error = ExceptionDispatchInfo.Capture(error);
+                if (error is OperationCanceledException)
+                {
+                    this.error = error;
+                }
+                else
+                {
+                    this.error = ExceptionDispatchInfo.Capture(error);
+                }
 
                 if (continuation != null || Interlocked.CompareExchange(ref this.continuation, UniTaskCompletionSourceCoreShared.s_sentinel, null) != null)
                 {
@@ -264,7 +271,7 @@ namespace Cysharp.Threading.Tasks
         {
             if (token != version)
             {
-                throw new InvalidOperationException("token version is not matched, can not await twice.");
+                throw new InvalidOperationException("Token version is not matched, can not await twice or get Status after await.");
             }
         }
     }

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

@@ -559,36 +559,6 @@ namespace Cysharp.Threading.Tasks
             return await continuationFunction();
         }
 
-#if UNITY_2018_3_OR_NEWER
-
-        public static async UniTask ConfigureAwait(this Task task, PlayerLoopTiming timing)
-        {
-            await task.ConfigureAwait(false);
-            await UniTask.Yield(timing);
-        }
-
-        public static async UniTask<T> ConfigureAwait<T>(this Task<T> task, PlayerLoopTiming timing)
-        {
-            var v = await task.ConfigureAwait(false);
-            await UniTask.Yield(timing);
-            return v;
-        }
-
-        public static async UniTask ConfigureAwait(this UniTask task, PlayerLoopTiming timing)
-        {
-            await task;
-            await UniTask.Yield(timing);
-        }
-
-        public static async UniTask<T> ConfigureAwait<T>(this UniTask<T> task, PlayerLoopTiming timing)
-        {
-            var v = await task;
-            await UniTask.Yield(timing);
-            return v;
-        }
-
-#endif
-
         public static async UniTask<T> Unwrap<T>(this UniTask<UniTask<T>> task)
         {
             return await await task;

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

@@ -9,7 +9,7 @@ namespace Cysharp.Threading.Tasks
 {
     public static class UniTaskObservableExtensions
     {
-        public static UniTask<T> ToUniTask<T>(this IObservable<T> source, CancellationToken cancellationToken = default(CancellationToken), bool useFirstValue = false)
+        public static UniTask<T> ToUniTask<T>(this IObservable<T> source, bool useFirstValue = false, CancellationToken cancellationToken = default)
         {
             var promise = new UniTaskCompletionSource<T>();
             var disposable = new SingleAssignmentDisposable();

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

@@ -9,41 +9,41 @@ using Cysharp.Threading.Tasks.CompilerServices;
 namespace Cysharp.Threading.Tasks
 {
     [AsyncMethodBuilder(typeof(AsyncUniTaskVoidMethodBuilder))]
-    public struct UniTaskVoid
+    public readonly struct UniTaskVoid
     {
         public void Forget()
         {
         }
 
-        [DebuggerHidden]
-        public Awaiter GetAwaiter()
-        {
-            return new Awaiter();
-        }
+        //        [DebuggerHidden]
+        //        public Awaiter GetAwaiter()
+        //        {
+        //            return new Awaiter();
+        //        }
 
-        public struct Awaiter : ICriticalNotifyCompletion
-        {
-            [DebuggerHidden]
-            public bool IsCompleted => true;
+        //        public struct Awaiter : ICriticalNotifyCompletion
+        //        {
+        //            [DebuggerHidden]
+        //            public bool IsCompleted => true;
 
-            [DebuggerHidden]
-            public void GetResult()
-            {
-#if UNITY_2018_3_OR_NEWER
-                UnityEngine.Debug.LogWarning("UniTaskVoid can't await, always fire-and-forget. use Forget instead of await.");
-#endif
-            }
+        //            [DebuggerHidden]
+        //            public void GetResult()
+        //            {
+        //#if UNITY_2018_3_OR_NEWER
+        //                UnityEngine.Debug.LogWarning("UniTaskVoid can't await, always fire-and-forget. use Forget instead of await.");
+        //#endif
+        //            }
 
-            [DebuggerHidden]
-            public void OnCompleted(Action continuation)
-            {
-            }
+        //            [DebuggerHidden]
+        //            public void OnCompleted(Action continuation)
+        //            {
+        //            }
 
-            [DebuggerHidden]
-            public void UnsafeOnCompleted(Action continuation)
-            {
-            }
-        }
+        //            [DebuggerHidden]
+        //            public void UnsafeOnCompleted(Action continuation)
+        //            {
+        //            }
+        //        }
     }
 }
 

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

@@ -9,10 +9,11 @@ namespace Cysharp.Threading.Tasks
 {
     public static partial class UnityAsyncExtensions
     {
-        public static async UniTask WaitAsync(this JobHandle jobHandle, PlayerLoopTiming waitTiming)
+        public static async UniTask WaitAsync(this JobHandle jobHandle, PlayerLoopTiming waitTiming, CancellationToken cancellationToken = default)
         {
             await UniTask.Yield(waitTiming);
             jobHandle.Complete();
+            cancellationToken.ThrowIfCancellationRequested(); // call cancel after Complete.
         }
 
         public static UniTask.Awaiter GetAwaiter(this JobHandle jobHandle)
@@ -29,21 +30,9 @@ namespace Cysharp.Threading.Tasks
             return new UniTask(handler, token).GetAwaiter();
         }
 
-        public static UniTask ToUniTask(this JobHandle jobHandle)
-        {
-            var handler = JobHandlePromise.Create(jobHandle, out var token);
-            {
-                PlayerLoopHelper.AddAction(PlayerLoopTiming.EarlyUpdate, handler);
-                PlayerLoopHelper.AddAction(PlayerLoopTiming.PreUpdate, handler);
-                PlayerLoopHelper.AddAction(PlayerLoopTiming.Update, handler);
-                PlayerLoopHelper.AddAction(PlayerLoopTiming.PreLateUpdate, handler);
-                PlayerLoopHelper.AddAction(PlayerLoopTiming.PostLateUpdate, handler);
-            }
+        // can not pass CancellationToken because can't handle JobHandle's Complete and NativeArray.Dispose.
 
-            return new UniTask(handler, token);
-        }
-
-        public static UniTask ConfigureAwait(this JobHandle jobHandle, PlayerLoopTiming waitTiming)
+        public static UniTask ToUniTask(this JobHandle jobHandle, PlayerLoopTiming waitTiming)
         {
             var handler = JobHandlePromise.Create(jobHandle, out var token);
             {

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

@@ -13,7 +13,7 @@ namespace Cysharp.Threading.Tasks
 {
     public static partial class UnityAsyncExtensions
     {
-#region AsyncOperation
+        #region AsyncOperation
 
         public static AsyncOperationAwaiter GetAwaiter(this AsyncOperation asyncOperation)
         {
@@ -21,18 +21,18 @@ namespace Cysharp.Threading.Tasks
             return new AsyncOperationAwaiter(asyncOperation);
         }
 
-        public static UniTask ToUniTask(this AsyncOperation asyncOperation)
+        public static UniTask WithCancellation(this AsyncOperation asyncOperation, CancellationToken cancellationToken)
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
-
-            return new UniTask(AsyncOperationConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, CancellationToken.None, out var token), token);
+            if (asyncOperation.isDone) return UniTask.CompletedTask;
+            return new UniTask(AsyncOperationConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
         }
 
-        public static UniTask ConfigureAwait(this AsyncOperation asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellation = default(CancellationToken))
+        public static UniTask ToUniTask(this AsyncOperation asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
-
-            return new UniTask(AsyncOperationConfiguredSource.Create(asyncOperation, timing, progress, cancellation, out var token), token);
+            if (asyncOperation.isDone) return UniTask.CompletedTask;
+            return new UniTask(AsyncOperationConfiguredSource.Create(asyncOperation, timing, progress, cancellationToken, out var token), token);
         }
 
         public struct AsyncOperationAwaiter : ICriticalNotifyCompletion
@@ -116,7 +116,7 @@ namespace Cysharp.Threading.Tasks
                 try
                 {
                     TaskTracker.RemoveTracking(this);
-                    
+
                     core.GetResult(token);
                 }
                 finally
@@ -125,7 +125,6 @@ namespace Cysharp.Threading.Tasks
                 }
             }
 
-
             public UniTaskStatus GetStatus(short token)
             {
                 return core.GetStatus(token);
@@ -180,9 +179,9 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-# endregion
+        #endregion
 
-#region ResourceRequest
+        #region ResourceRequest
 
         public static ResourceRequestAwaiter GetAwaiter(this ResourceRequest asyncOperation)
         {
@@ -190,18 +189,18 @@ namespace Cysharp.Threading.Tasks
             return new ResourceRequestAwaiter(asyncOperation);
         }
 
-        public static UniTask<UnityEngine.Object> ToUniTask(this ResourceRequest asyncOperation)
+        public static UniTask<UnityEngine.Object> WithCancellation(this ResourceRequest asyncOperation, CancellationToken cancellationToken)
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
-
-            return new UniTask<UnityEngine.Object>(ResourceRequestConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, CancellationToken.None, out var token), token);
+            if (asyncOperation.isDone) return UniTask.FromResult(asyncOperation.asset);
+            return new UniTask<UnityEngine.Object>(ResourceRequestConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
         }
 
-        public static UniTask<UnityEngine.Object> ConfigureAwait(this ResourceRequest asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellation = default(CancellationToken))
+        public static UniTask<UnityEngine.Object> ToUniTask(this ResourceRequest asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
-
-            return new UniTask<UnityEngine.Object>(ResourceRequestConfiguredSource.Create(asyncOperation, timing, progress, cancellation, out var token), token);
+            if (asyncOperation.isDone) return UniTask.FromResult(asyncOperation.asset);
+            return new UniTask<UnityEngine.Object>(ResourceRequestConfiguredSource.Create(asyncOperation, timing, progress, cancellationToken, out var token), token);
         }
 
         public struct ResourceRequestAwaiter : ICriticalNotifyCompletion
@@ -289,7 +288,7 @@ namespace Cysharp.Threading.Tasks
                 try
                 {
                     TaskTracker.RemoveTracking(this);
-                    
+
                     return core.GetResult(token);
                 }
                 finally
@@ -357,9 +356,9 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-# endregion
+        #endregion
 
-#region AssetBundleRequest
+        #region AssetBundleRequest
 
         public static AssetBundleRequestAwaiter GetAwaiter(this AssetBundleRequest asyncOperation)
         {
@@ -367,18 +366,18 @@ namespace Cysharp.Threading.Tasks
             return new AssetBundleRequestAwaiter(asyncOperation);
         }
 
-        public static UniTask<UnityEngine.Object> ToUniTask(this AssetBundleRequest asyncOperation)
+        public static UniTask<UnityEngine.Object> WithCancellation(this AssetBundleRequest asyncOperation, CancellationToken cancellationToken)
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
-
-            return new UniTask<UnityEngine.Object>(AssetBundleRequestConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, CancellationToken.None, out var token), token);
+            if (asyncOperation.isDone) return UniTask.FromResult(asyncOperation.asset);
+            return new UniTask<UnityEngine.Object>(AssetBundleRequestConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
         }
 
-        public static UniTask<UnityEngine.Object> ConfigureAwait(this AssetBundleRequest asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellation = default(CancellationToken))
+        public static UniTask<UnityEngine.Object> ToUniTask(this AssetBundleRequest asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
-
-            return new UniTask<UnityEngine.Object>(AssetBundleRequestConfiguredSource.Create(asyncOperation, timing, progress, cancellation, out var token), token);
+            if (asyncOperation.isDone) return UniTask.FromResult(asyncOperation.asset);
+            return new UniTask<UnityEngine.Object>(AssetBundleRequestConfiguredSource.Create(asyncOperation, timing, progress, cancellationToken, out var token), token);
         }
 
         public struct AssetBundleRequestAwaiter : ICriticalNotifyCompletion
@@ -466,7 +465,7 @@ namespace Cysharp.Threading.Tasks
                 try
                 {
                     TaskTracker.RemoveTracking(this);
-                    
+
                     return core.GetResult(token);
                 }
                 finally
@@ -534,9 +533,9 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-# endregion
+        #endregion
 
-#region AssetBundleCreateRequest
+        #region AssetBundleCreateRequest
 
         public static AssetBundleCreateRequestAwaiter GetAwaiter(this AssetBundleCreateRequest asyncOperation)
         {
@@ -544,18 +543,18 @@ namespace Cysharp.Threading.Tasks
             return new AssetBundleCreateRequestAwaiter(asyncOperation);
         }
 
-        public static UniTask<AssetBundle> ToUniTask(this AssetBundleCreateRequest asyncOperation)
+        public static UniTask<AssetBundle> WithCancellation(this AssetBundleCreateRequest asyncOperation, CancellationToken cancellationToken)
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
-
-            return new UniTask<AssetBundle>(AssetBundleCreateRequestConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, CancellationToken.None, out var token), token);
+            if (asyncOperation.isDone) return UniTask.FromResult(asyncOperation.assetBundle);
+            return new UniTask<AssetBundle>(AssetBundleCreateRequestConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
         }
 
-        public static UniTask<AssetBundle> ConfigureAwait(this AssetBundleCreateRequest asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellation = default(CancellationToken))
+        public static UniTask<AssetBundle> ToUniTask(this AssetBundleCreateRequest asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
-
-            return new UniTask<AssetBundle>(AssetBundleCreateRequestConfiguredSource.Create(asyncOperation, timing, progress, cancellation, out var token), token);
+            if (asyncOperation.isDone) return UniTask.FromResult(asyncOperation.assetBundle);
+            return new UniTask<AssetBundle>(AssetBundleCreateRequestConfiguredSource.Create(asyncOperation, timing, progress, cancellationToken, out var token), token);
         }
 
         public struct AssetBundleCreateRequestAwaiter : ICriticalNotifyCompletion
@@ -643,7 +642,7 @@ namespace Cysharp.Threading.Tasks
                 try
                 {
                     TaskTracker.RemoveTracking(this);
-                    
+
                     return core.GetResult(token);
                 }
                 finally
@@ -711,10 +710,10 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-# endregion
+        #endregion
 
 #if ENABLE_UNITYWEBREQUEST
-#region UnityWebRequestAsyncOperation
+        #region UnityWebRequestAsyncOperation
 
         public static UnityWebRequestAsyncOperationAwaiter GetAwaiter(this UnityWebRequestAsyncOperation asyncOperation)
         {
@@ -722,18 +721,18 @@ namespace Cysharp.Threading.Tasks
             return new UnityWebRequestAsyncOperationAwaiter(asyncOperation);
         }
 
-        public static UniTask<UnityWebRequest> ToUniTask(this UnityWebRequestAsyncOperation asyncOperation)
+        public static UniTask<UnityWebRequest> WithCancellation(this UnityWebRequestAsyncOperation asyncOperation, CancellationToken cancellationToken)
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
-
-            return new UniTask<UnityWebRequest>(UnityWebRequestAsyncOperationConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, CancellationToken.None, out var token), token);
+            if (asyncOperation.isDone) return UniTask.FromResult(asyncOperation.webRequest);
+            return new UniTask<UnityWebRequest>(UnityWebRequestAsyncOperationConfiguredSource.Create(asyncOperation, PlayerLoopTiming.Update, null, cancellationToken, out var token), token);
         }
 
-        public static UniTask<UnityWebRequest> ConfigureAwait(this UnityWebRequestAsyncOperation asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellation = default(CancellationToken))
+        public static UniTask<UnityWebRequest> ToUniTask(this UnityWebRequestAsyncOperation asyncOperation, IProgress<float> progress = null, PlayerLoopTiming timing = PlayerLoopTiming.Update, CancellationToken cancellationToken = default(CancellationToken))
         {
             Error.ThrowArgumentNullException(asyncOperation, nameof(asyncOperation));
-
-            return new UniTask<UnityWebRequest>(UnityWebRequestAsyncOperationConfiguredSource.Create(asyncOperation, timing, progress, cancellation, out var token), token);
+            if (asyncOperation.isDone) return UniTask.FromResult(asyncOperation.webRequest);
+            return new UniTask<UnityWebRequest>(UnityWebRequestAsyncOperationConfiguredSource.Create(asyncOperation, timing, progress, cancellationToken, out var token), token);
         }
 
         public struct UnityWebRequestAsyncOperationAwaiter : ICriticalNotifyCompletion
@@ -821,7 +820,7 @@ namespace Cysharp.Threading.Tasks
                 try
                 {
                     TaskTracker.RemoveTracking(this);
-                    
+
                     return core.GetResult(token);
                 }
                 finally
@@ -854,6 +853,7 @@ namespace Cysharp.Threading.Tasks
             {
                 if (cancellationToken.IsCancellationRequested)
                 {
+                    asyncOperation.webRequest.Abort();
                     core.TrySetCanceled(cancellationToken);
                     return false;
                 }
@@ -889,7 +889,7 @@ namespace Cysharp.Threading.Tasks
             }
         }
 
-# endregion
+        #endregion
 #endif
 
     }

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/package.json

@@ -1,10 +1,10 @@
 {
     "name": "com.cysharp.unitask",
     "displayName": "UniTask",
-    "version": "2.0.6-rc3",
-    "unity": "2018.3",
+    "version": "2.0.11-rc8",
+    "unity": "2019.1",
     "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

@@ -10,8 +10,12 @@ using System.Threading.Tasks;
 using Unity.Collections;
 using Unity.Jobs;
 using UnityEngine;
+using UnityEngine.Networking;
 using UnityEngine.UI;
 
+
+// using DG.Tweening;
+
 public struct MyJob : IJob
 {
     public int loopCount;
@@ -35,6 +39,36 @@ 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(
+
+
+
+    }
+
+}
+
+
+
+
 
 
 
@@ -49,23 +83,15 @@ public static partial class UnityUIComponentExtensions
 public class AsyncMessageBroker<T> : IDisposable
 {
     Channel<T> channel;
-    List<Func<T, UniTask>> asyncEvents;
+
+    IConnectableUniTaskAsyncEnumerable<T> multicastSource;
+    IDisposable connection;
 
     public AsyncMessageBroker()
     {
         channel = Channel.CreateSingleConsumerUnbounded<T>();
-        asyncEvents = new List<Func<T, UniTask>>();
-    }
-
-    async UniTaskVoid PublishAll()
-    {
-        await channel.Reader.ReadAllAsync().ForEachAwaitAsync(async x =>
-        {
-            foreach (var item in asyncEvents)
-            {
-                await item.Invoke(x);
-            }
-        });
+        multicastSource = channel.Reader.ReadAllAsync().Publish();
+        connection = multicastSource.Connect();
     }
 
     public void Publish(T value)
@@ -73,33 +99,15 @@ public class AsyncMessageBroker<T> : IDisposable
         channel.Writer.TryWrite(value);
     }
 
-    public Subscription Subscribe(Func<T, UniTask> func)
+    public IUniTaskAsyncEnumerable<T> Subscribe()
     {
-        asyncEvents.Add(func);
-        return new Subscription(this, func);
+        return multicastSource;
     }
 
     public void Dispose()
     {
         channel.Writer.TryComplete();
-        asyncEvents.Clear();
-    }
-
-    public readonly struct Subscription : IDisposable
-    {
-        readonly AsyncMessageBroker<T> broker;
-        readonly Func<T, UniTask> func;
-
-        public Subscription(AsyncMessageBroker<T> broker, Func<T, UniTask> func)
-        {
-            this.broker = broker;
-            this.func = func;
-        }
-
-        public void Dispose()
-        {
-            broker.asyncEvents.Remove(func);
-        }
+        connection.Dispose();
     }
 }
 
@@ -108,7 +116,7 @@ public class SandboxMain : MonoBehaviour
 {
     public Button okButton;
     public Button cancelButton;
-    public Text text;
+
 
     CancellationTokenSource cts;
 
@@ -131,6 +139,48 @@ public class SandboxMain : MonoBehaviour
     }
 
 
+
+
+
+    public class Model
+    {
+        // State<int> Hp { get; }
+
+
+
+
+        public Model()
+        {
+            // hp = new AsyncReactiveProperty<int>();
+
+
+
+
+
+
+            //setHp = Hp.GetSetter();
+        }
+
+        void Increment(int value)
+        {
+
+
+            // setHp(Hp.Value += value);
+        }
+    }
+
+
+
+    public Text text;
+    public Button button;
+
+
+    void Start2()
+    {
+
+    }
+
+
     async UniTask RunStandardDelayAsync()
     {
         UnityEngine.Debug.Log("DEB");
@@ -143,18 +193,20 @@ public class SandboxMain : MonoBehaviour
     async UniTask RunJobAsync()
     {
         var job = new MyJob() { loopCount = 999, inOut = new NativeArray<int>(1, Allocator.TempJob) };
-        JobHandle.ScheduleBatchedJobs();
+        try
+        {
+            JobHandle.ScheduleBatchedJobs();
 
-        var scheduled = job.Schedule();
+            var scheduled = job.Schedule();
 
-
-
-
-        UnityEngine.Debug.Log("OK");
-        await scheduled; // .ConfigureAwait(PlayerLoopTiming.Update); // .WaitAsync(PlayerLoopTiming.Update);
-        UnityEngine.Debug.Log("OK2");
-
-        job.inOut.Dispose();
+            UnityEngine.Debug.Log("OK");
+            await scheduled; // .ConfigureAwait(PlayerLoopTiming.Update); // .WaitAsync(PlayerLoopTiming.Update);
+            UnityEngine.Debug.Log("OK2");
+        }
+        finally
+        {
+            job.inOut.Dispose();
+        }
     }
 
 
@@ -190,25 +242,115 @@ public class SandboxMain : MonoBehaviour
         Debug.Log("Done");
     }
 
+    public int MyProperty { get; set; }
+
+    public class MyClass
+    {
+        public int MyProperty { get; set; }
+    }
+
+    async Task Test1()
+    {
+        var r = await TcsAsync("https://bing.com/");
+        Debug.Log("TASKASYNC");
+    }
+
+    async UniTaskVoid Test2()
+    {
+        try
+        {
+            var cts = new CancellationTokenSource();
+            var r = UniAsync("https://bing.com/", cts.Token);
+            cts.Cancel();
+            await r;
+            Debug.Log("UNIASYNC");
+        }
+        catch
+        {
+            Debug.Log("Canceled");
+        }
+    }
+
+    IEnumerator Test3(string url)
+    {
+        var req = UnityWebRequest.Get(url).SendWebRequest();
+        yield return req;
+        Debug.Log("COROUTINE");
+    }
+
+    static async Task<UnityWebRequest> TcsAsync(string url)
+    {
+        var req = await UnityWebRequest.Get(url).SendWebRequest();
+        return req;
+    }
+
+    static async UniTask<UnityWebRequest> UniAsync(string url, CancellationToken cancellationToken)
+    {
+        var req = await UnityWebRequest.Get(url).SendWebRequest().WithCancellation(cancellationToken);
+        return req;
+    }
+
+
     void Start()
     {
-        //var rp = new AsyncReactiveProperty<int>(10);
+        //UniTaskAsyncEnumerable.EveryValueChanged(mcc, x => x.MyProperty)
+        //    .Do(_ => { }, () => Debug.Log("COMPLETED"))
+        //    .ForEachAsync(x =>
+        //    {
+        //        Debug.Log("VALUE_CHANGED:" + x);
+        //    })
+        //    .Forget();
 
-        //Running(rp).Forget();
-
-        //await UniTaskAsyncEnumerable.EveryUpdate().Take(10).ForEachAsync((x, i) => rp.Value = i);
-
-        //rp.Dispose();
-
-        //var channel = Channel.CreateSingleConsumerUnbounded<int>();
-        //Debug.Log("wait channel");
-        //await channel.Reader.ReadAllAsync(this.GetCancellationTokenOnDestroy()).ForEachAsync(_ => { });
+        _ = Test1();
+        Test2().Forget();
+        StartCoroutine(Test3("https://bing.com/"));
 
 
-        var rp = new AsyncReactiveProperty<int>(10);
+        // DG.Tweening.Core.TweenerCore<int>
+        //okButton.GetComponent<RectTransform>().DOMoveX(10.2f, 30);
 
-        rp.Append(10).Select(x => x * 100).Take(30).Prepend(99).SkipLast(9).Where(x => x % 2 == 0).ForEachAsync(_ => { }).Forget();
 
+        // DOTween.To(
+
+        var cts = new CancellationTokenSource();
+
+        //var tween = okButton.GetComponent<RectTransform>().DOLocalMoveX(100, 5.0f);
+
+        cancelButton.OnClickAsAsyncEnumerable().ForEachAsync(_ =>
+        {
+            cts.Cancel();
+        }).Forget();
+
+
+        // await tween.ToUniTask(TweenCancelBehaviour.KillAndCancelAwait, cts.Token);
+
+        //tween.SetRecyclable(true);
+
+        Debug.Log("END");
+
+        // tween.Play();
+
+        // DOTween.
+
+        // DOVirtual.Float(0, 1, 1, x => { }).ToUniTask();
+
+        okButton.OnClickAsAsyncEnumerable().ForEachAsync(_ =>
+        {
+
+
+
+
+
+        }).Forget();
+
+
+
+        okButton.onClick.AddListener(UniTask.UnityAction(async () => await UniTask.Yield()));
+    }
+
+    async UniTaskVoid CloseAsync(CancellationToken cancellationToken = default)
+    {
+        await UniTask.Yield();
     }
 
     async UniTaskVoid Running(CancellationToken ct)
@@ -443,7 +585,7 @@ public class SandboxMain : MonoBehaviour
 
 public class ShowPlayerLoop
 {
-    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
+    // [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
     static void Init()
     {
         var playerLoop = UnityEngine.LowLevel.PlayerLoop.GetDefaultPlayerLoop();

src/UniTask/Assets/Tests/AsyncTest.cs

@@ -124,7 +124,6 @@ namespace Cysharp.Threading.TasksTests
         public IEnumerator BothEnumeratorCheck() => UniTask.ToCoroutine(async () =>
         {
             await ToaruCoroutineEnumerator(); // wait 5 frame:)
-            await ToaruCoroutineEnumerator().ConfigureAwait(PlayerLoopTiming.PostLateUpdate);
         });
 
         [UnityTest]

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

@@ -124,7 +124,6 @@ namespace Cysharp.Threading.TasksTests
         public IEnumerator BothEnumeratorCheck() => UniTask.ToCoroutine(async () =>
         {
             await ToaruCoroutineEnumerator(); // wait 5 frame:)
-            await ToaruCoroutineEnumerator().ConfigureAwait(PlayerLoopTiming.PostLateUpdate);
         });
 
         [UnityTest]

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

@@ -5,7 +5,8 @@
         "UnityEditor.TestRunner",
         "UniTask.Tests",
         "UniTask",
-        "Unity.ResourceManager"
+        "Unity.ResourceManager",
+        "DOTween.Modules"
     ],
     "includePlatforms": [
         "Editor"
@@ -14,7 +15,8 @@
     "allowUnsafeCode": false,
     "overrideReferences": true,
     "precompiledReferences": [
-        "nunit.framework.dll"
+        "nunit.framework.dll",
+        "DOTween.dll"
     ],
     "autoReferenced": false,
     "defineConstraints": [

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

@@ -4,14 +4,16 @@
         "UnityEngine.TestRunner",
         "UnityEditor.TestRunner",
         "UniTask",
-        "Unity.ResourceManager"
+        "Unity.ResourceManager",
+        "DOTween.Modules"
     ],
     "includePlatforms": [],
     "excludePlatforms": [],
     "allowUnsafeCode": false,
     "overrideReferences": true,
     "precompiledReferences": [
-        "nunit.framework.dll"
+        "nunit.framework.dll",
+        "DOTween.dll"
     ],
     "autoReferenced": false,
     "defineConstraints": [