Qore::AbstractPollOperation Class Reference

Abstract poll operation objects provide the polling interface for pollable objects. More...

#include <QC_AbstractPollOperation.dox.h>

Inheritance diagram for Qore::AbstractPollOperation:

Public Member Methods
abstract *hash< SocketPollInfo >	continuePoll ()
	Returns a socket poll hash if polling should continue or NOTHING if complete. More...
abstract string	getGoal ()
	Returns the goal. More...
auto	getOutput ()
	Returns any output generated by any completed poll action. More...
abstract string	getState ()
	Returns the current state. More...
abstract bool	goalReached ()
	Returns True when the goal as been reached. More...

Detailed Description

Abstract poll operation objects provide the polling interface for pollable objects.

This class implements polling logic for pollable operations and the state machine behind it

Member Function Documentation

continuePoll()

abstract *hash< SocketPollInfo > Qore::AbstractPollOperation::continuePoll ( )

pure virtual

Returns a socket poll hash if polling should continue or NOTHING if complete.

Returns

NOTHING if there is no more to poll and the poll operation was successful (i.e. the goal was reached), otherwise this method must return a new socket poll hash to continue the polling operation with another operation, after which this method will be called again if a matching event is received for the socket. If a socket poll hash is returned, then the internal state is also updated.

Implemented in Qore::FilePollOperation, and Qore::SocketPollOperation.

getGoal()

abstract string Qore::AbstractPollOperation::getGoal ( )

pure virtual

Returns the goal.

Returns

the goal set in the constructor

Implemented in Qore::SocketPollOperationBase.

getOutput()

auto Qore::AbstractPollOperation::getOutput

(

)

Returns any output generated by any completed poll action.

Code Flags:

RET_VALUE_ONLY

Returns

this base class method always returns NOTHING, reimplement in subclasses to change this behavior

getState()

abstract string Qore::AbstractPollOperation::getState ( )

pure virtual

Returns the current state.

Returns

the current state

Implemented in Qore::SocketPollOperationBase.

goalReached()

abstract bool Qore::AbstractPollOperation::goalReached ( )

pure virtual

Returns True when the goal as been reached.

Returns

True when the goal as been reached

Implemented in Qore::SocketPollOperationBase.