아티클
11/18/2011

TaskScheduler Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Represents an object that handles the low-level work of queuing tasks onto threads.

Inheritance Hierarchy

System.Object
System.Threading.Tasks.TaskScheduler

Namespace: System.Threading.Tasks
Assembly: mscorlib (in mscorlib.dll)

Syntax

'Declaration
<DebuggerDisplayAttribute("Id={Id}")> _
Public MustInherit Class TaskScheduler

[DebuggerDisplayAttribute("Id={Id}")]
public abstract class TaskScheduler

The TaskScheduler type exposes the following members.

Constructors

	Name	Description
	TaskScheduler	Initializes the TaskScheduler.

Top

Properties

	Name	Description
	Current	Gets the TaskScheduler associated with the currently executing task.
	Default	Gets the default TaskScheduler instance that is provided by the .NET Framework.
	Id	Gets the unique ID for this TaskScheduler.
	MaximumConcurrencyLevel	Indicates the maximum concurrency level this TaskScheduler is able to support.

Top

Methods

	Name	Description
	Equals(Object)	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 the Object is reclaimed by garbage collection. (Inherited from Object.)
	FromCurrentSynchronizationContext	Creates a TaskScheduler associated with the current System.Threading.SynchronizationContext.
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetScheduledTasks	Security Critical. For debugger support only, generates an enumerable of Task instances currently queued to the scheduler waiting to be executed.
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	QueueTask	Security Critical. Queues a Task to the scheduler.
	ToString	Returns a string that represents the current object. (Inherited from Object.)
	TryDequeue	Security Critical. Attempts to dequeue a Task that was previously queued to this scheduler.
	TryExecuteTask	Security Critical. Attempts to execute the provided Task on this scheduler.
	TryExecuteTaskInline	Security Critical. Determines whether the provided Task can be executed synchronously in this call, and if it can, executes it.

Top

Events

	Name	Description
	UnobservedTaskException	Occurs when a faulted Task's unobserved exception is about to trigger exception escalation policy, which, by default, would terminate the process.

Top

Remarks

TaskScheduler acts as the extension point for all pluggable scheduling logic. This includes mechanisms such as how to schedule a task for execution, and how scheduled tasks should be exposed to debuggers.

For more information and code examples, see Task Schedulers.

Several sample task schedulers are available on Code Gallery: Samples for Parallel Programming with the .NET Framework 4.

Version Information

Silverlight

Supported in: 5

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

All members of the abstract TaskScheduler type are thread-safe and may be used from multiple threads concurrently.

다음을 통해 공유