JoinableTaskFactory Class

Article
10/10/2013

A factory for starting asynchronous tasks that can mitigate deadlocks when the tasks require the Main thread of an application and the Main thread may itself be blocking on the completion of a task.

Inheritance Hierarchy

System.Object
Microsoft.VisualStudio.Threading.JoinableTaskFactory
Microsoft.VisualStudio.Threading.DelegatingJoinableTaskFactory

Namespace: Microsoft.VisualStudio.Threading
Assembly: Microsoft.VisualStudio.Threading (in Microsoft.VisualStudio.Threading.dll)

Syntax

'Declaration
Public Class JoinableTaskFactory

public class JoinableTaskFactory

public ref class JoinableTaskFactory

type JoinableTaskFactory =  class end

public class JoinableTaskFactory

The JoinableTaskFactory type exposes the following members.

Constructors

	Name	Description
	JoinableTaskFactory(JoinableTaskCollection)	Initializes a new instance of JoinableTaskFactory that adds all generated jobs to the specified collection.
	JoinableTaskFactory(JoinableTaskContext)	Initializes a new instance of JoinableTaskFactory with the specified owning context.

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Properties

	Name	Description
	Context	Gets the joinable task context to which this factory belongs.
	HangDetectionTimeout	Gets or sets the time between the last activity on a synchronously-blocking thread and the beginning of data collection about a possible hang.
	UnderlyingSynchronizationContext	Gets the underlying SynchronizationContext that controls the main thread in the host.

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Methods

	Name	Description
	Add	Adds the specified joinable task to the applicable collection.
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	OnTransitionedToMainThread	Occurs whenever a joinable task has completed a transition to the main thread.
	OnTransitioningToMainThread	Occurs when a joinable task has requested a transition to the main thread.
	PostToUnderlyingSynchronizationContext	Posts a callback to the main thread via the underlying dispatcher, or to the threadpool when no dispatcher exists on the main thread.
	Run(Func<Task>)	Runs the specified asynchronous method.
	Run<T>(Func<Task<T>>)	Runs the specified asynchronous method.
	RunAsync(Func<Task>)	Wraps the invocation of an asynchronous method so that it may execute asynchronously, but may potentially be synchronously completed (waited on) in the future.
	RunAsync<T>(Func<Task<T>>)	Wraps the invocation of an asynchronous method so that it may execute asynchronously, but may potentially be synchronously completed (waited on) in the future.
	SwitchToMainThreadAsync	Gets an awaitable whose continuations execute on the synchronization context with which this instance was initialized, so that both deadlocks and reentrancy are mitigated.
	ToString	Returns a string that represents the current object. (Inherited from Object.)
	WaitSynchronously	Synchronously blocks the calling thread for the completion of the specified task. If running on the main thread, any applicable message pump is suppressed while the thread sleeps.
	WaitSynchronouslyCore	Synchronously blocks the calling thread for the completion of the specified task.

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Remarks

For more complete comments please see JoinableTaskContext.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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