Inheritance diagram for SampleMechanismEA3:

Public Member Functions
	SampleMechanismEA3 (const EngineConfig &config, ProcessVariableContext &ctx, const char name, double period, ProcessVariableListener disable_filt_listener)
	Constructor.

virtual	~SampleMechanismEA3 ()
	Destructor.

virtual unsigned long	write (Guard &guard, Index &index)
	Write current buffer to index. More...

virtual void	pvConnected (ProcessVariable &pv, const epicsTime &when)
	ProcessVariableStateListener. More...

virtual void	pvValue (ProcessVariable &pv, const RawValue::Data *data)
	ProcessVariableValueListener. More...

size_t	getSampleCount (Guard &guard) const

Public Member Functions inherited from SampleMechanism
	SampleMechanism (const EngineConfig &config, ProcessVariableContext &ctx, const char name, double period, ProcessVariableListener disable_filt_listener)
	Construct mechanism for given period. More...

virtual std::string	getInfo (Guard &guard)

virtual void	start (Guard &guard)
	Start the sample mechanism. More...

virtual void	stop (Guard &guard)
	Stop sampling. More...

virtual void	addToFUX (Guard &guard, FUX::Element *doc)
	Append this sample mechanism to a FUX document. More...

void	pvDisconnected (ProcessVariable &pv, const epicsTime &when)
	ProcessVariableStateListener. More...

virtual OrderedMutex &	getMutex ()

virtual const std::string &	getName () const
	Gets the ProcessVariable name. More...

bool	isRunning (Guard &guard)

ProcessVariable::State	getPVState ()

void	disable (const epicsTime &when)
	Temporarily disable sampling. More...

void	enable (const epicsTime &when)
	Re-enable sampling. More...

void	addStateListener (ProcessVariableStateListener *listener)
	Add a listener to the underlying PV. More...

void	removeStateListener (ProcessVariableStateListener *listener)
	Remove a listener from the underlying PV. More...

void	addValueListener (ProcessVariableValueListener *listener)
	Add a listener to the underlying PV. More...

void	removeValueListener (ProcessVariableValueListener *listener)
	Remove a listener from the underlying PV. More...

Public Member Functions inherited from ProcessVariableStateListener
virtual	~ProcessVariableStateListener ()
	Constructor.

Member Function Documentation

size_t SampleMechanismEA3::getSampleCount ( Guard & guard ) const

inline

Returns: Returns the number of samples in the circular buffer.

virtual void SampleMechanismEA3::pvConnected	(	ProcessVariable &	pv,
		const epicsTime &	when
	)

virtual

ProcessVariableStateListener.

Base implementation allocates circular buffer

Implements SampleMechanism.

Reimplemented in SampleMechanismMonitoredGetEA3, and SampleMechanismMonitoredEA3.

virtual void SampleMechanismEA3::pvValue	(	ProcessVariable &	pv,
		const RawValue::Data *	data
	)

virtual

ProcessVariableValueListener.

Base implementation adds data to buffer. In addition, the initial value after a new connection is also logged with the host time stamp. For PVs that never change, this helps because the original time stamp might be before the last 'disconnect', so this gives us an idea of when the PV connected.

Implements SampleMechanism.

virtual unsigned long SampleMechanismEA3::write	(	Guard &	guard,
		Index &	index
	)

virtual

Write current buffer to index.

Returns: Returns number of samples written.

Implements SampleMechanism.

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

/home/malitsky/projects/epics-archiver/sourceforge/trunk/ea4-cpp/include/classic/engine/SampleMechanismEA3.h

Public Member Functions

Member Function Documentation