DotNext.Threading by Roman Sakno

<PackageReference Include="DotNext.Threading" Version="3.2.1" />

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API Diff between 3.2.1 and 5.10.0

143 Additions 111 Removals

DotNext.Collections.Concurrent

• public struct IndexPool : ISupplier<int>, IFunctional<Func<int>>, IConsumer<int>, IFunctional<Action<int>>, IReadOnlyCollection<int>, IEnumerable<int>, IEnumerable, IResettable

DotNext.Threading

• public class AsyncAutoResetEvent : QueuedSynchronizer, IAsyncResetEvent, IAsyncEvent, ISynchronizer, IDisposable
  • public AsyncAutoResetEvent(bool initialState, int concurrencyLevel)
  • public ValueTask<bool> WaitAsync(TimeSpan timeout, CancellationToken token = default)
  • public ValueTask WaitAsync(CancellationToken token = default)
  • public Task<bool> WaitAsync(TimeSpan timeout, CancellationToken token)
• public class AsyncBarrier : Disposable, IAsyncEvent, ISynchronizer, IDisposable
  • protected virtual ValueTask PostPhase(long phase)
  • protected virtual Task PostPhase(long phase)
  • public ValueTask<bool> SignalAndWaitAsync(TimeSpan timeout, CancellationToken token = default)
  • public ValueTask SignalAndWaitAsync(CancellationToken token = default)
  • public ValueTask<bool> WaitAsync(TimeSpan timeout, CancellationToken token = default)
  • public ValueTask WaitAsync(CancellationToken token = default)
  • public Task<bool> SignalAndWaitAsync(TimeSpan timeout, CancellationToken token = default)
  • public Task SignalAndWaitAsync(CancellationToken token)
  • public Task SignalAndWaitAsync()
  • public Task<bool> WaitAsync(TimeSpan timeout, CancellationToken token)
• public static class AsyncBridge
  • public static int MaxPoolSize { get; set; }
  • public static CancellationToken AsCancellationToken(this Task task)
  • public static CancellationToken AsCancellationToken(this Task task, out Func disposeTokenSource)
  • public static Task<CancellationToken> WaitAnyAsync(this ReadOnlySpan<CancellationToken> tokens)
  • public static Task<CancellationToken> WaitAnyAsync(this ReadOnlySpan<CancellationToken> tokens, out Func interruption)
  • public static ValueTask<bool> WaitAsync(this WaitHandle handle, TimeSpan timeout, CancellationToken token = default)
  • public static ValueTask WaitAsync(this WaitHandle handle, CancellationToken token = default)
  • public static ValueTask<bool> WaitAsync(this WaitHandle handle, TimeSpan timeout)
  • public static ValueTask<bool> WaitAsync(this WaitHandle handle)
• public class AsyncCorrelationSource<TKey, TValue>
• public class AsyncCountdownEvent : Synchronizer, IAsyncEvent, ISynchronizer, IDisposable
  • public bool IsSet { get; }
  • public AsyncCountdownEvent(long initialCount, int concurrencyLevel)
  • public bool Signal()
  • public ValueTask<bool> WaitAsync(TimeSpan timeout, CancellationToken token = default)
  • public ValueTask WaitAsync(CancellationToken token = default)
• public class AsyncCounter : QueuedSynchronizer, IAsyncEvent, ISynchronizer, IDisposable
  • public AsyncCounter(long initialValue, int concurrencyLevel)
  • public void Increment(long delta)
  • public bool TryDecrement()
  • public ValueTask<bool> WaitAsync(TimeSpan timeout, CancellationToken token = default)
  • public ValueTask WaitAsync(CancellationToken token = default)
  • public Task<bool> WaitAsync(TimeSpan timeout, CancellationToken token)
• public class AsyncEventHub : IResettable
• public static class AsyncEvent
  • public static Task<bool> WaitAsync(this IAsyncEvent event, TimeSpan timeout)
  • public static Task WaitAsync(this IAsyncEvent event, CancellationToken token)
  • public static Task WaitAsync(this IAsyncEvent event)
• public class AsyncExclusiveLock : QueuedSynchronizer, IAsyncDisposable
  • public AsyncExclusiveLock(int concurrencyLevel)
  • public ValueTask AcquireAsync(TimeSpan timeout, CancellationToken token = default)
  • public ValueTask AcquireAsync(CancellationToken token = default)
  • public Task AcquireAsync(TimeSpan timeout, CancellationToken token = default)
  • public Task AcquireAsync(CancellationToken token)
  • public ValueTask DisposeAsync()
  • public ValueTask StealAsync(object reason, TimeSpan timeout, CancellationToken token = default)
  • public ValueTask StealAsync(object reason = null, CancellationToken token = default)
  • public ValueTask<bool> TryAcquireAsync(TimeSpan timeout, CancellationToken token = default)
  • public ValueTask<bool> TryStealAsync(object reason, TimeSpan timeout, CancellationToken token = default)
  • public Task<bool> TryAcquireAsync(TimeSpan timeout, CancellationToken token)
  • public Task<bool> TryAcquireAsync(TimeSpan timeout)
• public class AsyncLazy<T>
  • public Task<T> Task { get; }
  • public AsyncLazy(Func<CancellationToken, Task<T>> valueFactory, bool resettable = false)
  • public AsyncLazy(Func<Task<T>> valueFactory, bool resettable = false)
  • public ConfiguredTaskAwaitable<T> ConfigureAwait(bool continueOnCapturedContext)
  • public TaskAwaiter<T> GetAwaiter()
  • public Task<T> WithCancellation(CancellationToken token)
• public struct AsyncLock : IDisposable, IEquatable<AsyncLock>, IAsyncDisposable
  • public static AsyncLock ReadLock(AsyncReaderWriterLock rwLock)
  • public static AsyncLock ReadLock(AsyncReaderWriterLock rwLock, bool upgradeable)
  • public static AsyncLock WriteLock(AsyncReaderWriterLock rwLock, bool upgrade = false)
  • public ValueTask<Holder> AcquireAsync(CancellationToken token)
  • public ValueTask<Holder> AcquireAsync(TimeSpan timeout, CancellationToken token = default)
  • public static AsyncLock WriteLock(AsyncReaderWriterLock rwLock)
  • public Task<Holder> AcquireAsync(CancellationToken token)
  • public Task<Holder> AcquireAsync(TimeSpan timeout, CancellationToken token = default)
  • public ValueTask<Holder> TryAcquireAsync(TimeSpan timeout, CancellationToken token = default)
  • public Task<Holder> TryAcquireAsync(TimeSpan timeout, bool suppressCancellation, CancellationToken token)
  • public Task<Holder> TryAcquireAsync(TimeSpan timeout, CancellationToken token = default)
  • public Task<Holder> TryAcquireAsync(CancellationToken token)
• public static class AsyncLockAcquisition
  • public static ValueTask<Holder> AcquireLockAsync<T>(T obj, TimeSpan timeout)
  • public static ValueTask<Holder> AcquireLockAsync<T>(this T obj, CancellationToken token = default)
  • public static ValueTask<Holder> AcquireLockAsync<T>(this T obj, TimeSpan timeout, CancellationToken token = default)
  • public static ValueTask<Holder> AcquireReadLockAsync<T>(T obj, TimeSpan timeout)
  • public static ValueTask<Holder> AcquireReadLockAsync<T>(this T obj, CancellationToken token = default)
  • public static ValueTask<Holder> AcquireReadLockAsync<T>(this T obj, TimeSpan timeout, CancellationToken token = default)
  • public static ValueTask<Holder> AcquireWriteLockAsync<T>(T obj, TimeSpan timeout)
  • public static ValueTask<Holder> AcquireWriteLockAsync<T>(this T obj, CancellationToken token = default)
  • public static ValueTask<Holder> AcquireWriteLockAsync<T>(this T obj, TimeSpan timeout, CancellationToken token = default)
  • public static ValueTask<Holder> AcquireWriteLockAsync<T>(this T obj, bool upgrade, CancellationToken token = default)
  • public static ValueTask<Holder> AcquireWriteLockAsync<T>(this T obj, bool upgrade, TimeSpan timeout, CancellationToken token = default)
  • public static Task<Holder> AcquireLockAsync<T>(this T obj, TimeSpan timeout)
  • public static Task<Holder> AcquireLockAsync<T>(this T obj, CancellationToken token)
  • public static Task<Holder> AcquireReadLockAsync<T>(this T obj, TimeSpan timeout)
  • public static Task<Holder> AcquireReadLockAsync<T>(this T obj, CancellationToken token)
  • public static Task<Holder> AcquireUpgradeableReadLockAsync<T>(this T obj, TimeSpan timeout)
  • public static Task<Holder> AcquireUpgradeableReadLockAsync<T>(this T obj, CancellationToken token)
  • public static Task<Holder> AcquireWriteLockAsync<T>(this T obj, TimeSpan timeout)
  • public static Task<Holder> AcquireWriteLockAsync<T>(this T obj, CancellationToken token)
  • public static Task<Holder> SuppressCancellation(this Task<Holder> result)
  • public static Task<Holder> SuppressDisposedState(this Task<Holder> result)
  • public static Task<Holder> SuppressDisposedStateOrCancellation(this Task<Holder> result)
• public class AsyncManualResetEvent : Synchronizer, IAsyncResetEvent, IAsyncEvent, ISynchronizer, IDisposable
  • public bool IsSet { get; }
  • public AsyncManualResetEvent(bool initialState, int concurrencyLevel)
  • public ValueTask<bool> WaitAsync(TimeSpan timeout, CancellationToken token = default)
  • public ValueTask WaitAsync(CancellationToken token = default)
• public class AsyncReaderWriterLock : QueuedSynchronizer, IAsyncDisposable
  • public bool IsUpgradeableReadLockHeld { get; }
  • public AsyncReaderWriterLock(int concurrencyLevel)
  • public void DowngradeFromWriteLock()
  • public ValueTask EnterReadLockAsync(TimeSpan timeout, CancellationToken token = default)
  • public ValueTask EnterReadLockAsync(CancellationToken token = default)
  • public ValueTask EnterWriteLockAsync(CancellationToken token = default)
  • public ValueTask EnterWriteLockAsync(TimeSpan timeout, CancellationToken token = default)
  • public void Release()
  • public ValueTask StealWriteLockAsync(object reason, TimeSpan timeout, CancellationToken token = default)
  • public ValueTask StealWriteLockAsync(object reason = null, CancellationToken token = default)
  • public ValueTask DisposeAsync()
  • public Task EnterReadLockAsync(CancellationToken token)
  • public Task EnterReadLockAsync(TimeSpan timeout, CancellationToken token = default)
  • public Task EnterUpgradeableReadLockAsync(CancellationToken token)
  • public Task EnterUpgradeableReadLockAsync(TimeSpan timeout, CancellationToken token = default)
  • public Task EnterWriteLockAsync(CancellationToken token)
  • public Task EnterWriteLockAsync(TimeSpan timeout, CancellationToken token = default)
  • public void ExitReadLock()
  • public void ExitUpgradeableReadLock()
  • public void ExitWriteLock()
  • public ValueTask<bool> TryEnterReadLockAsync(TimeSpan timeout, CancellationToken token = default)
  • public Task<bool> TryEnterReadLockAsync(TimeSpan timeout, CancellationToken token)
  • public Task<bool> TryEnterReadLockAsync(TimeSpan timeout)
  • public bool TryEnterUpgradeableReadLock()
  • public Task<bool> TryEnterUpgradeableReadLockAsync(TimeSpan timeout, CancellationToken token)
  • public Task<bool> TryEnterUpgradeableReadLockAsync(TimeSpan timeout)
  • public ValueTask<bool> TryEnterWriteLockAsync(TimeSpan timeout, CancellationToken token = default)
  • public Task<bool> TryEnterWriteLockAsync(TimeSpan timeout, CancellationToken token)
  • public Task<bool> TryEnterWriteLockAsync(TimeSpan timeout)
  • public ValueTask<bool> TryStealWriteLockAsync(object reason, TimeSpan timeout, CancellationToken token = default)
  • public bool TryUpgradeToWriteLock()
  • public ValueTask<bool> TryUpgradeToWriteLockAsync(TimeSpan timeout, CancellationToken token = default)
  • public ValueTask UpgradeToWriteLockAsync(CancellationToken token = default)
  • public ValueTask UpgradeToWriteLockAsync(TimeSpan timeout, CancellationToken token = default)
• public class AsyncSharedLock : QueuedSynchronizer, IAsyncDisposable
  • public AsyncSharedLock(long concurrencyLevel, bool limitedConcurrency = true)
  • public ValueTask AcquireAsync(bool strongLock, TimeSpan timeout, CancellationToken token = default)
  • public ValueTask AcquireAsync(bool strongLock, CancellationToken token = default)
  • public AsyncSharedLock(long concurrencyLevel)
  • public Task AcquireAsync(bool strongLock, TimeSpan timeout, CancellationToken token = default)
  • public Task AcquireAsync(bool strongLock, CancellationToken token)
  • public ValueTask DisposeAsync()
  • public ValueTask<bool> TryAcquireAsync(bool strongLock, TimeSpan timeout, CancellationToken token = default)
  • public Task<bool> TryAcquireAsync(bool strongLock, TimeSpan timeout, CancellationToken token)
  • public Task<bool> TryAcquireAsync(bool strongLock, TimeSpan timeout)
• public class AsyncTimer : Disposable, IAsyncDisposable
  • public bool IsRunning { get; }
  • public AsyncTimer(Func<CancellationToken, Task<bool>> callback)
  • public ValueTask DisposeAsync()
  • public bool Start(TimeSpan dueTime, TimeSpan period, CancellationToken token = default)
  • public bool Start(TimeSpan period, CancellationToken token = default)
  • public Task<bool> StopAsync()
• public class AsyncTrigger : QueuedSynchronizer, IAsyncEvent, ISynchronizer, IDisposable
  • public AsyncTrigger(int concurrencyLevel)
  • public bool Signal(bool resumeAll = false)
  • public ValueTask<bool> SignalAndWaitAsync(bool resumeAll, bool throwOnEmptyQueue, TimeSpan timeout, CancellationToken token = default)
  • public ValueTask SignalAndWaitAsync(bool resumeAll, bool throwOnEmptyQueue, CancellationToken token = default)
  • public ValueTask<bool> SpinWaitAsync<TCondition>(TCondition condition, TimeSpan timeout, CancellationToken token = default) where TCondition : ISupplier<bool>
  • public ValueTask SpinWaitAsync<TCondition>(TCondition condition, CancellationToken token = default) where TCondition : ISupplier<bool>
  • public ValueTask<bool> WaitAsync(TimeSpan timeout, CancellationToken token = default)
  • public ValueTask WaitAsync(CancellationToken token = default)
  • public bool EnsureState<TState>(TState state, Predicate<TState> condition)
  • public void Signal()
  • public void Signal<TState>(TState state)
  • public void Signal<TState>(TState state, bool fairness)
  • public void Signal<TState, TArgs>(TState state, Action<TState, TArgs> mutator, TArgs args)
  • public void Signal<TState, TArgs>(TState state, Action<TState, TArgs> mutator, TArgs args, bool fairness)
  • public void Signal<TState>(TState state, Action<TState> mutator)
  • public void Signal<TState>(TState state, Action<TState> mutator, bool fairness)
  • public Task<bool> SignalAndWaitAsync(TimeSpan timeout, CancellationToken token = default)
  • public Task SignalAndWaitAsync(CancellationToken token = default)
  • public Task<bool> SignalAndWaitAsync<TState>(TState state, Predicate<TState> condition, TimeSpan timeout, CancellationToken token = default)
  • public Task<bool> SignalAndWaitAsync<TState>(TState state, Predicate<TState> condition, TimeSpan timeout, bool fairness, CancellationToken token = default)
  • public Task SignalAndWaitAsync<TState>(TState state, Predicate<TState> condition, CancellationToken token = default)
  • public Task SignalAndWaitAsync<TState>(TState state, Predicate<TState> condition, bool fairness, CancellationToken token = default)
  • public Task<bool> SignalAndWaitAsync<TState, TArgs>(TState state, Action<TState, TArgs> mutator, TArgs args, Predicate<TState> condition, TimeSpan timeout, CancellationToken token = default)
  • public Task<bool> SignalAndWaitAsync<TState, TArgs>(TState state, Action<TState, TArgs> mutator, TArgs args, Predicate<TState> condition, TimeSpan timeout, bool fairness, CancellationToken token = default)
  • public Task SignalAndWaitAsync<TState, TArgs>(TState state, Action<TState, TArgs> mutator, TArgs args, Predicate<TState> condition, CancellationToken token = default)
  • public Task SignalAndWaitAsync<TState, TArgs>(TState state, Action<TState, TArgs> mutator, TArgs args, Predicate<TState> condition, bool fairness, CancellationToken token = default)
  • public Task<bool> SignalAndWaitAsync<TState>(TState state, Action<TState> mutator, Predicate<TState> condition, TimeSpan timeout, CancellationToken token = default)
  • public Task<bool> SignalAndWaitAsync<TState>(TState state, Action<TState> mutator, Predicate<TState> condition, TimeSpan timeout, bool fairness, CancellationToken token = default)
  • public Task SignalAndWaitAsync<TState>(TState state, Action<TState> mutator, Predicate<TState> condition, CancellationToken token = default)
  • public Task SignalAndWaitAsync<TState>(TState state, Action<TState> mutator, Predicate<TState> condition, bool fairness, CancellationToken token = default)
  • public Task<bool> WaitAsync(TimeSpan timeout, CancellationToken token = default)
  • public Task<bool> WaitAsync<TState>(TState state, Predicate<TState> condition, TimeSpan timeout, CancellationToken token = default)
  • public Task WaitAsync<TState>(TState state, Predicate<TState> condition, CancellationToken token = default)
• public interface IAsyncEvent : ISynchronizer, IDisposable
  • ValueTask<bool> WaitAsync(TimeSpan timeout, CancellationToken token = default)
  • ValueTask WaitAsync(CancellationToken token = default)
  • Task<bool> WaitAsync(TimeSpan timeout, CancellationToken token)
• public abstract class LinkedCancellationTokenSource : CancellationTokenSource
• public interface ISynchronizer
  • bool HasAnticipants { get; }
• public static class LinkedTokenSourceFactory
  • public static bool CausedBy(this OperationCanceledException e, LinkedCancellationTokenSource source, CancellationToken token)
  • public static LinkedCancellationTokenSource LinkTo(this ref CancellationToken first, CancellationToken second)
  • public static CancellationTokenSource LinkTo(this ref CancellationToken token, TimeSpan timeout)
  • public static CancellationTokenSource LinkTo(this ref CancellationToken first, TimeSpan timeout, CancellationToken second)
  • public static CancellationTokenSource LinkTo(this ref CancellationToken first, CancellationToken second)
• public class PendingTaskInterruptedException : Exception
• public abstract class QueuedSynchronizer : Disposable, ISynchronizer
  • public void Dispose(Exception reason)
  • public ValueTask DisposeAsync()
  • public IReadOnlyList<object> GetSuspendedCallers()
  • public void SetCallerInformation(object information)
  • public void TrackSuspendedCallers(Func<object> callerInfoProvider = null)
• public abstract class QueuedSynchronizer<TContext> : QueuedSynchronizer
• public static class Scheduler
• public abstract class Synchronizer : Disposable, ISynchronizer
  • public bool IsSet { get; }
  • public Task<bool> WaitAsync(TimeSpan timeout, CancellationToken token)
  • public Task<bool> WaitAsync<T>(Predicate<T> condition, T arg, TimeSpan timeout, CancellationToken token = default)
  • public Task WaitAsync<T>(Predicate<T> condition, T arg, CancellationToken token = default)
  • public Task<bool> WaitAsync<T1, T2>(Func<T1, T2, bool> condition, T1 arg1, T2 arg2, TimeSpan timeout, CancellationToken token = default)
  • public Task WaitAsync<T1, T2>(Func<T1, T2, bool> condition, T1 arg1, T2 arg2, CancellationToken token = default)

DotNext.Threading.Channels

• public sealed class PersistentChannelOptions : ChannelOptions
  • public TagList MeasurementTags { get; set; }
  • public bool ReliableEnumeration { get; set; }
  • public IncrementingEventCounter ReadRateCounter { get; set; }
  • public IncrementingEventCounter WriteRateCounter { get; set; }

DotNext.Threading.Leases

• public abstract class LeaseConsumer : Disposable, IAsyncDisposable
• public struct LeaseIdentity : IEquatable<LeaseIdentity>
• public abstract class LeaseProvider<TMetadata> : Disposable

DotNext.Threading.Tasks

• public abstract class ManualResetCompletionSource
• public enum ManualResetCompletionSourceStatus
• public static class TaskCompletionPipe
• public class TaskCompletionPipe<T> : IAsyncEnumerable<T>, IResettable where T : Task
• public class TaskQueue<T> : IAsyncEnumerable<T>, IResettable where T : Task
• public class ValueTaskCompletionSource : ManualResetCompletionSource, IValueTaskSource, ISupplier<TimeSpan, CancellationToken, ValueTask>, IFunctional<Func<TimeSpan, CancellationToken, ValueTask>>
• public class ValueTaskCompletionSource<T> : ManualResetCompletionSource, IValueTaskSource<T>, IValueTaskSource, ISupplier<TimeSpan, CancellationToken, ValueTask>, IFunctional<Func<TimeSpan, CancellationToken, ValueTask>>, ISupplier<TimeSpan, CancellationToken, ValueTask<T>>, IFunctional<Func<TimeSpan, CancellationToken, ValueTask<T>>>
• public abstract class Future : IFuture, INotifyCompletion, IValueTaskSource
  • public interface IAwaiter
  • public bool IsCompleted { get; }
  • protected Future(bool runContinuationsAsynchronously = true, bool continueOnCapturedContext = false)
  • public ValueTask AsTask()
  • protected void Complete(Exception e = null)
  • protected void GetResult()
  • public void OnCompleted(Action callback)
• public abstract class Future<TResult> : IFuture, INotifyCompletion, IValueTaskSource<TResult>
  • public interface IAwaiter<TResult>
  • public bool IsCompleted { get; }
  • protected Future(bool runContinuationsAsynchronously = true, bool continueOnCapturedContext = false)
  • public ValueTask<TResult> AsTask()
  • protected void Complete(Result<TResult> e)
  • protected TResult GetResult()
  • public void OnCompleted(Action callback)
• public static class ValueTaskSynchronization
  • public static ValueTask WhenAll(ValueTask task1, ValueTask task2)
  • public static ValueTask<ValueTuple<T1, T2>> WhenAll<T1, T2>(ValueTask<T1> task1, ValueTask<T2> task2)
  • public static ValueTask WhenAll(ValueTask task1, ValueTask task2, ValueTask task3)
  • public static ValueTask<ValueTuple<T1, T2, T3>> WhenAll<T1, T2, T3>(ValueTask<T1> task1, ValueTask<T2> task2, ValueTask<T3> task3)
  • public static ValueTask WhenAll(ValueTask task1, ValueTask task2, ValueTask task3, ValueTask task4)
  • public static ValueTask<ValueTuple<T1, T2, T3, T4>> WhenAll<T1, T2, T3, T4>(ValueTask<T1> task1, ValueTask<T2> task2, ValueTask<T3> task3, ValueTask<T4> task4)
  • public static ValueTask WhenAll(ValueTask task1, ValueTask task2, ValueTask task3, ValueTask task4, ValueTask task5)
  • public static ValueTask<ValueTuple<T1, T2, T3, T4, T5>> WhenAll<T1, T2, T3, T4, T5>(ValueTask<T1> task1, ValueTask<T2> task2, ValueTask<T3> task3, ValueTask<T4> task4, ValueTask<T5> task5)
  • public static ValueTask<ValueTask> WhenAny(ValueTask task1, ValueTask task2)
  • public static ValueTask<ValueTask<TResult>> WhenAny<TResult>(ValueTask<TResult> task1, ValueTask<TResult> task2)
  • public static ValueTask<ValueTask> WhenAny(ValueTask task1, ValueTask task2, ValueTask task3)
  • public static ValueTask<ValueTask<TResult>> WhenAny<TResult>(ValueTask<TResult> task1, ValueTask<TResult> task2, ValueTask<TResult> task3)
  • public static ValueTask<ValueTask> WhenAny(ValueTask task1, ValueTask task2, ValueTask task3, ValueTask task4)
  • public static ValueTask<ValueTask<TResult>> WhenAny<TResult>(ValueTask<TResult> task1, ValueTask<TResult> task2, ValueTask<TResult> task3, ValueTask<TResult> task4)
  • public static ValueTask<ValueTask> WhenAny(ValueTask task1, ValueTask task2, ValueTask task3, ValueTask task4, ValueTask task5)
  • public static ValueTask<ValueTask<TResult>> WhenAny<TResult>(ValueTask<TResult> task1, ValueTask<TResult> task2, ValueTask<TResult> task3, ValueTask<TResult> task4, ValueTask<TResult> task5)