dueca::TriggerRegulatorGreedy Class Reference

Make triggering (more) regular. More...

#include <TriggerRegulatorGreedy.hxx>

Inheritance diagram for dueca::TriggerRegulatorGreedy:

Collaboration diagram for dueca::TriggerRegulatorGreedy:

Public Member Functions
	TriggerRegulatorGreedy (TriggerPuller &base, const TimeSpec &ts=TimeSpec(0, 1))
	Constructor.
	TriggerRegulatorGreedy (boost::intrusive_ptr< TargetAndPuller > base, const TimeSpec &ts=TimeSpec(0, 1))
	Constructor with a ref-counter object as trigger.
	TriggerRegulatorGreedy (const TimeSpec &ts=TimeSpec(0, 1))
	Constructor without triggering base, use TriggerTarget::setTrigger to specify the trigger.
	~TriggerRegulatorGreedy ()
	Destructor.
bool	changePeriodAndOffset (const TimeSpec &ts)
	Change the period and offset.
void	setPeriodAndOffset (const TimeSpec &ts)
	Set the period and offset.
const std::string &	getTargetName () const
	Name of the regulator.
Public Member Functions inherited from dueca::TargetAndPuller
void	addTerm (TriggerPuller &p)
	Add another puller to this (and, or) combination of triggers.
void	addTerm (const boost::intrusive_ptr< TargetAndPuller > &p)
	Add another puller to this combination.
bool	removeTerm (TriggerPuller &p)
	Remove a term from this TriggerAnd or TriggerOr object.
Public Member Functions inherited from dueca::TriggerPuller
const std::string &	getTriggerName () const
	Find a name.

Additional Inherited Members
Protected Types inherited from dueca::TriggerPuller
typedef list< TargetData >	targetlist_type
	Combination of a target, someone to pull if requested, and the index that target needs to identify this puller.
Protected Member Functions inherited from dueca::TargetAndPuller
	TargetAndPuller (const std::string &name=std::string())
	Constructor.
virtual	~TargetAndPuller ()
	Destructor.
Protected Member Functions inherited from dueca::TriggerPuller
void	pull (const DataTimeSpec &ts)
	activate and notify the targets
	TriggerPuller (const std::string &name=std::string())
	Constructor.
virtual	~TriggerPuller ()
	Destructor.
virtual void	addTarget (const boost::intrusive_ptr< TriggerTarget > &target, unsigned id)
	Add a target to this puller, only called by TriggerTarget's setTrigger.
virtual void	removeTarget (const TriggerTarget *target)
	Remove a target from the puller, only called by destructor.
Protected Attributes inherited from dueca::TargetAndPuller
unsigned	name_psize
	Number of pullers when name calculated.
Protected Attributes inherited from dueca::TriggerPuller
targetlist_type	targets
	List of targets and indices.
std::bitset< MAX_MANAGERS >	activitylevels
	Index of activitymanager levels.
std::string	name
	Name, for debugging purposes.

Detailed Description

Make triggering (more) regular.

A TriggerRegulatorGreedy accepts a trigger and a time specification. Using the time specification, the triggering will be made regular. This only works with incoming spans. If a span starts (after a gap in data on a channel for example), one shorter trigger may be passed, and after this regular triggers are supplied again.

Example:

myActivity.setTrigger(
  boost::intrusive_ptr<TriggerRegulatorGreedy>(
  new TriggerRegulatorGreedy(my_token, TimeSpec(0,20))));

If now a triggering is provided by my_token for (150,200), (200,250), the regulator will deliver triggers (150,160), (160,180), (180,200) etc. If there is a gap in triggering, a last remaining bit of span may not be triggered.

This is the greedy variant, i.e., it will not wait until the whole incoming span is present before providing another trigger, as soon as part of the span is present, it triggers. dueca::TriggerRegulator will do non-greedy regular triggering.

Constructor & Destructor Documentation

TriggerRegulatorGreedy() [1/3]

dueca::TriggerRegulatorGreedy::TriggerRegulatorGreedy	(	TriggerPuller &	base,
		const TimeSpec &	ts = TimeSpec(0, 1) )

Constructor.

Parameters

base	The base triggering object
ts	Time offset and period for triggering

TriggerRegulatorGreedy() [2/3]

dueca::TriggerRegulatorGreedy::TriggerRegulatorGreedy	(	boost::intrusive_ptr< TargetAndPuller >	base,
		const TimeSpec &	ts = TimeSpec(0, 1) )

Constructor with a ref-counter object as trigger.

Parameters

base	The base triggering object
ts	Time offset and period for triggering

TriggerRegulatorGreedy() [3/3]

dueca::TriggerRegulatorGreedy::TriggerRegulatorGreedy

(

const TimeSpec &

ts = TimeSpec(0, 1)

)

Constructor without triggering base, use TriggerTarget::setTrigger to specify the trigger.

Parameters

ts	Time offset and period for triggering

Member Function Documentation

changePeriodAndOffset()

bool dueca::TriggerRegulatorGreedy::changePeriodAndOffset

(

const TimeSpec &

ts

)

Change the period and offset.

Prepare a new period and offset. Through triggering, the so prepared object should be "picked up". Returns false if not possible.

Parameters

ts	Time specification defining new period and offset.

Returns

true if the change is accepted.

setPeriodAndOffset()

void dueca::TriggerRegulatorGreedy::setPeriodAndOffset ( const TimeSpec & ts )

inline

Set the period and offset.

Note that this is not thread-safe, and should only be done before running.

Parameters

ts	Time specification defining new period and offset.

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

• /home/abuild/rpmbuild/BUILD/dueca-4.1.3/dueca/TriggerRegulatorGreedy.hxx