ResultTask
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]ResultTask class
A Task specialization that returns a result value upon completion.
template<typename T>class ResultTask : public System::Threading::Tasks::Task
Template parameters
| Parameter | Description |
|---|---|
| T | The type of the result value returned by the task |
Methods
| Method | Description |
|---|---|
| void Activate(const SharedPtr<TaskScheduler>&) | Activates the task for execution on a scheduler. |
| void AddCompletionAction(const Action<>&) | Adds a continuation action to be executed upon completion. |
| void Cancel() | Marks the task as cancelled and finishes task. |
| void Complete(const T&) | Sets the result value for the task and completes it. |
| void Complete() | Marks the task as completed and finishes task. |
| Runtime::CompilerServices::ConfiguredResultTaskAwaitable<T> ConfigureAwait(bool) const | Configures how awaits on this result task should behave regarding context capture. |
| TaskPtr ContinueWith(const Action<RTaskPtr<T>>&) | Creates a continuation that executes when the result task completes. |
| RTaskPtr<TNewResult> ContinueWith(const Func<RTaskPtr<T>, TNewResult>&) | Creates a continuation that executes when the result task completes. |
| TaskPtr ContinueWith(const Action<TaskPtr>&) | Creates a continuation that executes when the task completes. |
| RTaskPtr<TResult> ContinueWith(const Func<TaskPtr, TResult>&) | Creates a continuation that executes when the task completes. |
| void Deactivate() | Deactivates the task for execution on its curent scheduler if any. |
| void Dispose() override | Releases resources associated with the task. |
| virtual bool Equals(ptr) | Compares objects using C# Object.Equals semantics. |
| static std::enable_if<IsSmartPtr<T1>::value&&IsSmartPtr<T2>::value, bool>::type Equals(T1 const&, T2 const&) | Compares reference type objects in C# style. |
| static std::enable_if<!IsSmartPtr<T1>::value&&!IsSmartPtr<T2>::value, bool>::type Equals(T1 const&, T2 const&) | Compares value type objects in C# style. |
| static bool Equals(float const&, float const&) | Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. |
| static bool Equals(double const&, double const&) | Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. |
| void Execute() | Executes the task’s function. |
| virtual bool FastCast(const Details::FastRttiBase&, void **) const | For internal purposes only. |
| const SharedPtr<Object>& get_AsyncState() const | Gets the user-defined state object associated with the task. |
| static const TaskPtr& get_CompletedTask() | Gets a completed task (singleton) |
| static Nullable<int32_t> get_CurrentId() | |
| AggregateException get_Exception() const | Gets the ID for task. |
| int32_t get_Id() const | |
| bool get_IsCanceled() const | Gets whether the task completed due to cancellation. |
| bool get_IsCompleted() const | Gets whether the task has completed. |
| bool get_IsFaulted() const | Gets whether the task completed due to an unhandled exception. |
| T get_Result() | Gets the result of the asynchronous operation. |
| const SharedPtr<TaskScheduler>& get_Scheduler() const | Gets the scheduler associated with this task. |
| TaskStatus get_Status() const | Gets the current status of the task. |
| Runtime::CompilerServices::ResultTaskAwaiter<T> GetAwaiter() const | Gets an awaiter for this result task for use with Await. |
| Detail::SmartPtrCounter * GetCounter() | Gets reference counter data structure associated with the object. |
| virtual int32_t GetHashCode() const | Analog of C# Object.GetHashCode() method. Enables hashing of custom objects. |
| virtual const TypeInfo& GetType() const | Gets actual type of object. Analog of C# System.Object.GetType() call. |
| virtual bool Is(const TypeInfo&) const | Check if object represents an instance of type described by targetType. Analog of C# ‘is’ operator. |
| void Lock() | Implements C# lock() statement locking. Call directly or use LockContext sentry object. |
| virtual ptr MemberwiseClone() const | Analog of C# Object.MemberwiseClone() method. Enables cloning custom types. |
| Object() | Creates object. Initializes all internal data structures. |
| Object(Object const&) | Copy constructor. Doesn’t copy anything, really, just initializes new object and enables copy constructing subclasses. |
| Object& operator=(Object const&) | Assignment operator. Doesn’t copy anything, really, just initializes new object and enables copy constructing subclasses. |
| static bool ReferenceEquals(ptr const&, ptr const&) | Compares objects by reference. |
| static std::enable_if<!IsSmartPtr<T>::value, bool>::type ReferenceEquals(T const&, T const&) | Compares objects by reference. |
| static std::enable_if<!IsSmartPtr<T>::value, bool>::type ReferenceEquals(T const&, std::nullptr_t) | Reference-compares value type object with nullptr. |
| bool ReferenceEquals(String const&, std::nullptr_t) | Specialization of Object::ReferenceEquals for case of string and nullptr. |
| bool ReferenceEquals(String const&, String const&) | Specialization of Object::ReferenceEquals for case of strings. |
| int RemovedSharedRefs(int) | Decreases shared reference count by specified value. |
| ResultTask(const Func<T>&) | Constructs a ResultTask with a function that returns a value. |
| ResultTask() | Internal implementation. Not for user code. |
| ResultTask(const T&) | Internal constructor for creating result tasks with specified result. |
| void RunSynchronously() | Runs the task synchronously on the current thread. |
| void RunSynchronously(const SharedPtr<TaskScheduler>&) | Runs the task synchronously using the specified scheduler. |
| void set_Function(const FunctionT&) | Sets the internal function to execute. |
| void set_Result(const T&) | Sets the result value for the task. |
| void set_Scheduler(const SharedPtr<TaskScheduler>&) | Sets the scheduler associated with this task. |
| void set_Status(TaskStatus) | Sets the task status. |
| virtual void SetTemplateWeakPtr(uint32_t) | Set n’th template argument a weak pointer (rather than shared). Allows switching pointers in containers to weak mode. |
| int SharedCount() const | Gets current value of shared reference counter. |
| Object * SharedRefAdded() | Increments shared reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector. |
| int SharedRefRemovedSafe() | Decrements and returns shared reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector. |
| void Start() | Starts the task execution using the default scheduler. |
| void Start(const SharedPtr<TaskScheduler>&) | Starts the task execution using the specified scheduler. |
| Task(const Action<>&) | Constructs a Task with an action to execute. |
| Task(const Action<>&, const CancellationToken&) | Constructs a Task with an action and cancellation token. |
| Task(const Action<SharedPtr<Object>>&, const SharedPtr<Object>&) | Constructs a Task with a stateful action and state object. |
| Task(const Action<SharedPtr<Object>>&, const SharedPtr<Object>&, const CancellationToken&) | Constructs a Task with stateful action, state, and cancellation token. |
| Task() | Internal constructor for creating uninitialized tasks. |
| virtual String ToString() const | Analog of C# Object.ToString() method. Enables converting custom objects to string. |
| static const TypeInfo& Type() | Implements C# typeof(System.Object) construct. |
| void Unlock() | Implements C# lock() statement unlocking. Call directly or use LockContext sentry object. |
| void Wait(const CancellationToken&) | Waits for the task to complete with cancellation support. |
| void Wait() | Waits for the task to complete. |
| Detail::SmartPtrCounter * WeakRefAdded() | Increments weak reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector. |
| void WeakRefRemoved() | Decrements weak reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector. |
| virtual ~Object() | Destroys object. Frees all internal data structures. |
| ~Task() | Destructor. |
Remarks
Represents an asynchronous operation that produces a result, similar to System.Threading.Tasks.Task
See Also
- Class Task
- Namespace System::Threading::Tasks
- Library Aspose.Slides