This is a channel element that represents the output endpoint of a connection, i.e. More...

#include <rtt/internal/ConnOutputEndPoint.hpp>

Inheritance diagram for RTT::internal::ConnOutputEndpoint< T >:

Public Types
typedef T	value_t

typedef boost::intrusive_ptr< ChannelElement< T > >	shared_ptr

typedef boost::call_traits< T >::param_type	param_t

typedef boost::call_traits< T >::reference	reference_t

Public Member Functions
	ConnOutputEndpoint (InputPort< T > port, ConnID output_id)
	Creates the connection end that represents the output and attach it to the input. More...

	~ConnOutputEndpoint ()

bool	inputReady ()
	Called by the connection factory to check that the connection is properly set up. More...

virtual bool	write (typename base::ChannelElement< T >::param_t sample)
	Writes a new sample on this connection This should never be called, as all connections are supposed to have a data storage element. More...

virtual void	disconnect (bool forward)
	Performs a disconnection of this channel's endpoints. More...

virtual bool	signal ()
	Signals that there is new data available on this channel By default, the channel element forwards the call to its output. More...

virtual bool	data_sample (typename base::ChannelElement< T >::param_t sample)

virtual base::PortInterface *	getPort () const
	Gets the port this channel element is connected to. More...

virtual ConnID *	getConnID () const
	Gets the Connection ID of this channel. More...

std::string	getElementName () const
	Returns the class name of this element. More...

shared_ptr	getOutput ()

shared_ptr	getInput ()

virtual bool	data_sample (param_t sample)
	Provides a data sample to initialize this connection. More...

virtual value_t	data_sample ()

virtual bool	write (param_t sample)
	Writes a new sample on this connection. More...

virtual FlowStatus	read (reference_t sample, bool copy_old_data)
	Reads a sample from the connection. More...

void	removeInput ()
	Removes the input channel (if any). More...

ChannelElementBase::shared_ptr	getInputEndPoint ()
	Returns the first input channel element of this connection. More...

ChannelElementBase::shared_ptr	getOutputEndPoint ()
	Returns the last output channel element of this connection. More...

void	setOutput (shared_ptr output)
	Sets the output of this channel element to output and sets the input of output to this. More...

virtual void	clear ()
	Clears any data stored by the channel. More...

virtual bool	isRemoteElement () const
	This function may be used to identify, if the current element uses a network transport, to send the data to the next Element in the logical chain. More...

virtual std::string	getRemoteURI () const
	This function returns the URI of the next channel element in the logical chain. More...

virtual std::string	getLocalURI () const
	This function return the URI of this element. More...

Protected Member Functions
void	ref ()
	Increases the reference count. More...

void	deref ()
	Decreases the reference count, and deletes the object if it is zero. More...

Detailed Description

template<typename T>
class RTT::internal::ConnOutputEndpoint< T >

This is a channel element that represents the output endpoint of a connection, i.e.

the part that is connected to the InputPort. In the RTT, connections are always created from input towards output. So this class is typically first created of the channel element chain and attached to the input port. Then we build further towards the outputport. Imagine a spider attaching a thread at one wall and moving along to the other side of the wall.

Definition at line 57 of file ConnOutputEndPoint.hpp.

Member Typedef Documentation

template<typename T>

typedef boost::call_traits<T>::param_type RTT::base::ChannelElement< T >::param_t

inherited

Definition at line 59 of file ChannelElement.hpp.

template<typename T>

typedef boost::call_traits<T>::reference RTT::base::ChannelElement< T >::reference_t

inherited

Definition at line 60 of file ChannelElement.hpp.

template<typename T>

typedef boost::intrusive_ptr< ChannelElement<T> > RTT::base::ChannelElement< T >::shared_ptr

inherited

Definition at line 58 of file ChannelElement.hpp.

template<typename T>

typedef T RTT::base::ChannelElement< T >::value_t

inherited

Definition at line 57 of file ChannelElement.hpp.

Constructor & Destructor Documentation

template<typename T>

RTT::internal::ConnOutputEndpoint< T >::ConnOutputEndpoint	(	InputPort< T > *	port,
		ConnID *	output_id
	)

inline

Creates the connection end that represents the output and attach it to the input.

Parameters

port	The start point.
output_id	Each connection must be identified by an ID that represents the other end. This id is passed to the input port port.

Returns

Definition at line 70 of file ConnOutputEndPoint.hpp.

template<typename T>

RTT::internal::ConnOutputEndpoint< T >::~ConnOutputEndpoint ( )

inline

Definition at line 76 of file ConnOutputEndPoint.hpp.

Member Function Documentation

void ChannelElementBase::clear ( )

virtualinherited

Clears any data stored by the channel.

It means that ChannelElement::read() will return false afterwards (provided that no new data has been written on the meantime of course)

By default, the channel element forwards the calls to its input

Reimplemented in RTT::internal::ChannelBufferElement< T >, and RTT::internal::ChannelDataElement< T >.

Definition at line 117 of file ChannelInterface.cpp.

References RTT::base::ChannelElementBase::getInput().

Referenced by RTT::internal::ChannelDataElement< T >::clear(), and RTT::internal::ChannelBufferElement< T >::clear().

template<typename T>

virtual bool RTT::base::ChannelElement< T >::data_sample ( param_t sample )

inlinevirtualinherited

Provides a data sample to initialize this connection.

This is used before the first write() in order to inform this connection of the size of the data. As such enough storage space can be allocated before the actual writing begins.

Returns: false if an error occured that requires the channel to be invalidated.

Reimplemented in RTT::internal::ChannelBufferElement< T >, and RTT::internal::ChannelDataElement< T >.

Definition at line 82 of file ChannelElement.hpp.

References RTT::base::ChannelElement< T >::data_sample(), and RTT::base::ChannelElement< T >::getOutput().

Referenced by RTT::base::ChannelElement< T >::data_sample(), RTT::InputPort< T >::getDataSample(), and RTT::mqueue::MQChannelElement< T >::inputReady().

template<typename T>

virtual value_t RTT::base::ChannelElement< T >::data_sample ( )

inlinevirtualinherited

Reimplemented in RTT::internal::ChannelBufferElement< T >, and RTT::internal::ChannelDataElement< T >.

Definition at line 90 of file ChannelElement.hpp.

References RTT::base::ChannelElement< T >::data_sample(), and RTT::base::ChannelElement< T >::getInput().

Referenced by RTT::internal::ChannelDataElement< T >::data_sample(), RTT::internal::ChannelBufferElement< T >::data_sample(), and RTT::corba::RemoteChannelElement< T >::data_sample().

template<typename T>

virtual bool RTT::internal::ConnOutputEndpoint< T >::data_sample ( typename base::ChannelElement< T >::param_t sample )

inlinevirtual

Definition at line 126 of file ConnOutputEndPoint.hpp.

void ChannelElementBase::deref ( )

protectedinherited

Decreases the reference count, and deletes the object if it is zero.

Definition at line 165 of file ChannelInterface.cpp.

References oro_atomic_dec_and_test().

Referenced by RTT::corba::RemoteChannelElement< T >::_remove_ref(), and RTT::base::intrusive_ptr_release().

template<typename T>

virtual void RTT::internal::ConnOutputEndpoint< T >::disconnect ( bool forward )

inlinevirtual

Performs a disconnection of this channel's endpoints.

If forward is true, then the disconnection is initiated by the input endpoint. Otherwise, it has been initiated by the output endpoint.

Reimplemented from RTT::base::ChannelElementBase.

Definition at line 100 of file ConnOutputEndPoint.hpp.

References RTT::base::ChannelElementBase::disconnect(), and RTT::base::InputPortInterface::removeConnection().

template<typename T>

virtual ConnID* RTT::internal::ConnOutputEndpoint< T >::getConnID ( ) const

inlinevirtual

Gets the Connection ID of this channel.

This is only stored in connection endpoints.

Returns: null if no ConnID is associated with this element.

Reimplemented from RTT::base::ChannelElementBase.

Definition at line 135 of file ConnOutputEndPoint.hpp.

template<typename T>

std::string RTT::internal::ConnOutputEndpoint< T >::getElementName ( ) const

inlinevirtual

Returns the class name of this element.

This is primary useful for special case handling in the connection tracking.

Returns: The name of the class of the ChannelElement

Reimplemented from RTT::base::ChannelElementBase.

Definition at line 139 of file ConnOutputEndPoint.hpp.

template<typename T>

shared_ptr RTT::base::ChannelElement< T >::getInput ( )

inlineinherited

Definition at line 68 of file ChannelElement.hpp.

References RTT::base::ChannelElementBase::getInput().

Referenced by RTT::base::ChannelElement< T >::data_sample(), RTT::corba::RemoteChannelElement< T >::inputReady(), RTT::base::ChannelElement< T >::read(), and RTT::mqueue::MQChannelElement< T >::signal().

ChannelElementBase::shared_ptr ChannelElementBase::getInputEndPoint ( )

inherited

Returns the first input channel element of this connection.

Will return the channel element the furthest away from the input port, or this if none.

Returns: getInput() ? getInput()->getInputEndPoint() : this

Definition at line 97 of file ChannelInterface.cpp.

References RTT::base::ChannelElementBase::getInput().

std::string ChannelElementBase::getLocalURI ( ) const

virtualinherited

This function return the URI of this element.

The URI must be unique.

Returns: URI of this element.

Reimplemented in RTT::corba::RemoteChannelElement< T >, and RTT::mqueue::MQChannelElement< T >.

Definition at line 152 of file ChannelInterface.cpp.

Referenced by RTT::mqueue::MQChannelElement< T >::getLocalURI(), and RTT::corba::RemoteChannelElement< T >::getLocalURI().

template<typename T>

shared_ptr RTT::base::ChannelElement< T >::getOutput ( )

inlineinherited

Definition at line 62 of file ChannelElement.hpp.

References RTT::base::ChannelElementBase::getOutput().

Referenced by RTT::base::ChannelElement< T >::data_sample(), RTT::mqueue::MQChannelElement< T >::data_sample(), RTT::corba::RemoteChannelElement< T >::data_sample(), RTT::mqueue::MQChannelElement< T >::inputReady(), RTT::mqueue::MQChannelElement< T >::signal(), and RTT::base::ChannelElement< T >::write().

ChannelElementBase::shared_ptr ChannelElementBase::getOutputEndPoint ( )

inherited

Returns the last output channel element of this connection.

Will return the channel element the furthest away from the output port, or this if none.

Returns: getOutput() ? getOutput()->getOutputEndPoint() : this

Definition at line 102 of file ChannelInterface.cpp.

References RTT::base::ChannelElementBase::getOutput().

template<typename T>

virtual base::PortInterface* RTT::internal::ConnOutputEndpoint< T >::getPort ( ) const

inlinevirtual

Gets the port this channel element is connected to.

Returns: null if no port is connected to this element, the port (or a proxy representing the port) otherwise.

Reimplemented from RTT::base::ChannelElementBase.

Definition at line 131 of file ConnOutputEndPoint.hpp.

std::string ChannelElementBase::getRemoteURI ( ) const

virtualinherited

This function returns the URI of the next channel element in the logical chain.

The URI must be unique. E.g: In the local case output->getLocalURI() In the remote case the URI of the remote channel element.

Returns: URI of the next element.

Reimplemented in RTT::corba::RemoteChannelElement< T >, and RTT::mqueue::MQChannelElement< T >.

Definition at line 144 of file ChannelInterface.cpp.

Referenced by RTT::mqueue::MQChannelElement< T >::getRemoteURI(), and RTT::corba::RemoteChannelElement< T >::getRemoteURI().

template<typename T>

bool RTT::internal::ConnOutputEndpoint< T >::inputReady ( )

inlinevirtual

Called by the connection factory to check that the connection is properly set up.

It is called when the channel is complete, so we can register ourselves on the port side now

Before that, the channel might not be complete and therefore having the input port read on it would lead to crashes

Reimplemented from RTT::base::ChannelElementBase.

Definition at line 87 of file ConnOutputEndPoint.hpp.

References RTT::base::ChannelElementBase::inputReady().

bool ChannelElementBase::isRemoteElement ( ) const

virtualinherited

This function may be used to identify, if the current element uses a network transport, to send the data to the next Element in the logical chain.

Returns: true if a network transport is used.

Reimplemented in RTT::corba::RemoteChannelElement< T >, and RTT::mqueue::MQChannelElement< T >.

Definition at line 140 of file ChannelInterface.cpp.

template<typename T>

virtual FlowStatus RTT::base::ChannelElement< T >::read	(	reference_t	sample,
		bool	copy_old_data
	)

inlinevirtualinherited

Reads a sample from the connection.

sample is a reference which will get updated if a sample is available. The method returns true if a sample was available, and false otherwise. If false is returned, then sample is not modified by the method

Reimplemented in RTT::internal::ChannelBufferElement< T >, and RTT::internal::ChannelDataElement< T >.

Definition at line 116 of file ChannelElement.hpp.

References RTT::base::ChannelElement< T >::getInput(), RTT::NoData, and RTT::base::ChannelElement< T >::read().

Referenced by RTT::base::ChannelElement< T >::read(), RTT::corba::RemoteChannelElement< T >::read(), and RTT::mqueue::MQChannelElement< T >::signal().

void ChannelElementBase::ref ( )

protectedinherited

Increases the reference count.

Definition at line 160 of file ChannelInterface.cpp.

References oro_atomic_inc().

Referenced by RTT::corba::RemoteChannelElement< T >::_add_ref(), RTT::base::intrusive_ptr_add_ref(), and RTT::corba::RemoteChannelElement< T >::RemoteChannelElement().

void RTT::base::ChannelElementBase::removeInput ( )

inherited

Removes the input channel (if any).

This call may delete channels from memory.

void ChannelElementBase::setOutput ( shared_ptr output )

inherited

Sets the output of this channel element to output and sets the input of output to this.

This implies that this channel element becomes the input of output. There is no setInput function since this function does both setting input and output of this and output.

Parameters

output the next element in chain.

Definition at line 69 of file ChannelInterface.cpp.

Referenced by RTT::internal::ConnFactory::buildBufferedChannelInput(), RTT::internal::ConnFactory::buildBufferedChannelOutput(), RTT::internal::ConnFactory::buildChannelInput(), and RTT::corba::CDataFlowInterface_i::deregisterChannel().

template<typename T>

virtual bool RTT::internal::ConnOutputEndpoint< T >::signal ( )

inlinevirtual

Signals that there is new data available on this channel By default, the channel element forwards the call to its output.

Returns: false if an error occured that requires the channel to be invalidated. In no ways it indicates that the sample has been received by the other side of the channel.

Reimplemented from RTT::base::ChannelElementBase.

Definition at line 113 of file ConnOutputEndPoint.hpp.

References RTT::base::InputPortInterface::signal().

template<typename T>

virtual bool RTT::internal::ConnOutputEndpoint< T >::write ( typename base::ChannelElement< T >::param_t sample )

inlinevirtual

Writes a new sample on this connection This should never be called, as all connections are supposed to have a data storage element.

Definition at line 97 of file ConnOutputEndPoint.hpp.

template<typename T>

virtual bool RTT::base::ChannelElement< T >::write ( param_t sample )

inlinevirtualinherited

Writes a new sample on this connection.

sample is the sample to write.

Returns: false if an error occured that requires the channel to be invalidated. In no ways it indicates that the sample has been received by the other side of the channel.

Reimplemented in RTT::internal::ChannelBufferElement< T >, and RTT::internal::ChannelDataElement< T >.

Definition at line 103 of file ChannelElement.hpp.

References RTT::base::ChannelElement< T >::getOutput(), and RTT::base::ChannelElement< T >::write().

Referenced by RTT::mqueue::MQChannelElement< T >::signal(), RTT::base::ChannelElement< T >::write(), and RTT::corba::RemoteChannelElement< T >::write().

The documentation for this class was generated from the following file:

rtt/internal/ConnOutputEndPoint.hpp

Public Types

Public Member Functions

Protected Member Functions

Detailed Description

template<typename T> class RTT::internal::ConnOutputEndpoint< T >

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

template<typename T>
class RTT::internal::ConnOutputEndpoint< T >