ITask Struct Reference

A packaged callback with possible continuations and dependencies that can be arranged in a dependency graph (directed acyclic graph). The task is not executed directly but only when the graph is scheduled for execution and all dependencies have been satisfied. More...

Inheritance diagram for ITask:

Collaboration diagram for ITask:

Detailed Description

A packaged callback with possible continuations and dependencies that can be arranged in a dependency graph (directed acyclic graph). The task is not executed directly but only when the graph is scheduled for execution and all dependencies have been satisfied.

Public Member Functions
virtual ErrCode INTERFACE_FUNC	getName (IString **name)=0
	Gets the task name. More...
virtual ErrCode INTERFACE_FUNC	setName (IString *name)=0
	Sets the task name that is used in diagnostics. More...
virtual ErrCode INTERFACE_FUNC	then (ITask *continuation)=0
	Sets the continuation to only execute after this task completes. Be careful of forming cycles as tasks whose dependencies cannot be satisfied will never execute. More...
Public Member Functions inherited from IBaseObject
virtual ErrCode INTERFACE_FUNC	borrowInterface (const IntfID &intfID, void **obj) const =0
	Returns another interface which is supported by the object without incrementing the reference count. More...
virtual ErrCode INTERFACE_FUNC	dispose ()=0
	Disposes all references held by the object. More...
virtual ErrCode INTERFACE_FUNC	getHashCode (SizeT *hashCode)=0
	Returns hash code of the object. More...
virtual ErrCode INTERFACE_FUNC	equals (IBaseObject *other, Bool *equal) const =0
	Compares object to another object for equality. More...
virtual ErrCode INTERFACE_FUNC	toString (CharPtr *str)=0
	Returns a string representation of the object. More...
Public Member Functions inherited from IUnknown
virtual ErrCode INTERFACE_FUNC	queryInterface (const IntfID &intfID, void **obj)=0
	Returns another interface which is supported by the object and increments the reference count. More...
virtual int INTERFACE_FUNC	addRef ()=0
	Increments the reference count for an interface on an object. More...
virtual int INTERFACE_FUNC	releaseRef ()=0
	Decrements the reference count for an interface on an object. More...

Member Function Documentation

getName()

virtual ErrCode INTERFACE_FUNC getName ( IString **  name )

pure virtual

Gets the task name.

Parameters

[out]

name

The task name.

setName()

virtual ErrCode INTERFACE_FUNC setName ( IString *  name )

pure virtual

Sets the task name that is used in diagnostics.

Parameters

name	The new task name.

then()

virtual ErrCode INTERFACE_FUNC then ( ITask *  continuation )

pure virtual

Sets the continuation to only execute after this task completes. Be careful of forming cycles as tasks whose dependencies cannot be satisfied will never execute.

Parameters

continuation

The task that should wait for this one to complete.

Return values

OPENDAQ_ERR_NOT_SUPPORTED

If the continuation implementation was not crated by the scheduler library.