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IDXTaskManager interface

  • Článek

The IDXTaskManager interface enables you to configure the task manager to specify the thread pool size and the thread concurrency limit.

Members

The IDXTaskManager interface inherits from the IUnknown interface. IDXTaskManager also has these types of members:

  • Methods

Methods

The IDXTaskManager interface has these methods.

Method Description
GetConcurrencyLimit

Retrieves the number of threads allowed to execute on a single processor at a given time.
GetThreadPoolSize

Retrieves the number of threads in the thread pool.
QueryNumProcessors

Retrieves the number of processors installed in the system.
ScheduleTasks

Defines a set of tasks to execute.
SetConcurrencyLimit

Defines the number of threads that can execute from a thread pool at a given time.
SetThreadPoolSize

Specifies the number of threads to create and make available to execute tasks.
TerminateRequest

Terminates a task based on its request ID value that was used when the task was scheduled.
TerminateTasks

Terminates a set of tasks previously scheduled by the task manager.

 

Remarks

The task manager is a generic service used to schedule and execute caller-defined tasks. It automatically breaks a transform task into threads and manages their completion, which improves the efficiency of the transform.

The default thread pool size is two threads per processor, and the default concurrency limit is one thread per processor. The default implementation uses input/output completion ports on Microsoft Windows NT to optimize processor utilization.

Requirements

Minimum supported client

Windows XP

Minimum supported server

Windows 2000 Server

Header

 Dxtrans.h

IDL

 Dxtrans.idl

DLL

 Dxtrans.dll