This class stores an integer within a variable context. More...

#include <Barrier.h>

Inheritance diagram for madara::knowledge::containers::Barrier:

Public Types
typedef knowledge::KnowledgeRecord::Integer	type
	trait that describes the value type More...

Public Member Functions
	Barrier (const KnowledgeUpdateSettings &settings=KnowledgeUpdateSettings())
	Default constructor. More...

	Barrier (const std::string &name, KnowledgeBase &knowledge, const KnowledgeUpdateSettings &settings=KnowledgeUpdateSettings())
	Constructor. More...

	Barrier (const std::string &name, Variables &knowledge, const KnowledgeUpdateSettings &settings=KnowledgeUpdateSettings())
	Constructor. More...

	Barrier (const std::string &name, KnowledgeBase &knowledge, int id, int participants, const KnowledgeUpdateSettings &settings=KnowledgeUpdateSettings())
	Default constructor. More...

	Barrier (const std::string &name, Variables &knowledge, int id, int participants, const KnowledgeUpdateSettings &settings=KnowledgeUpdateSettings())
	Default constructor. More...

	Barrier (const Barrier &rhs)
	Copy constructor. More...

	~Barrier ()
	Destructor. More...

virtual BaseContainer *	clone (void) const
	Clones this container. More...

std::string	get_debug_info (void)
	Returns the type of the container along with name and any other useful information. More...

size_t	get_id (void) const
	Returns the id of the barrier in the barrier ring. More...

std::string	get_name (void) const
	Returns the name of the container. More...

size_t	get_participants (void) const
	Returns the number of participants in the barrier ring. More...

type	get_round (void) const
	Returns the current barrier round. More...

KnowledgeUpdateSettings	get_settings (void)
	Gets the update settings for the container. More...

bool	is_done (void)
	Wait for all other participants to reach your barrier round. More...

bool	is_false (void) const
	Determines if the barrier is false. More...

bool	is_true (void) const
	Determines if the barrier is true. More...

void	modify (void)
	Mark the value as modified. More...

virtual bool	modify_if_false (BaseContainer &conditional)
	Modifies the container if the argument is false. More...

virtual bool	modify_if_true (BaseContainer &conditional)
	Modifies the container if the argument is true. More...

void	next (void)
	Goes to the next barrier round. More...

bool	operator!= (const Barrier &value) const
	Checks for inequality. More...

void	operator= (const Barrier &rhs)
	Assignment operator. More...

type	operator= (type value)
	Sets the value of the variable. More...

bool	operator== (const Barrier &value) const
	Checks for equality. More...

void	resize (size_t id=0, size_t participants=1)
	Resizes the barrier, usually when number of participants change. More...

void	set (type value)
	Sets the barrier to a specific round. More...

void	set_name (const std::string &var_name, KnowledgeBase &knowledge, int id, int participants)
	Sets the variable name that this refers to. More...

void	set_name (const std::string &var_name, Variables &knowledge, int id, int participants)
	Sets the variable name that this refers to. More...

void	set_name (const std::string &var_name, ThreadSafeContext &knowledge, int id, int participants)
	Sets the variable name that this refers to. More...

void	set_quality (uint32_t quality, const KnowledgeReferenceSettings &settings=KnowledgeReferenceSettings(false))
	Sets the quality of writing to the barrier variables. More...

void	set_settings (const KnowledgeUpdateSettings &settings)
	Sets the update settings for the container. More...

double	to_double (void) const
	Returns the barrier round number as a double. More...

knowledge::KnowledgeRecord::Integer	to_integer (void) const
	Returns the barrier round number as an integer (same as *) More...

knowledge::KnowledgeRecord	to_record (void) const
	Returns the barrier round number as a knowledge::KnowledgeRecord. More...

std::string	to_string (void) const
	Returns the barrier round number as a string. More...

Protected Attributes
MADARA_LOCK_TYPE	mutex_
	guard for access and changes More...

std::string	name_
	Prefix of variable. More...

KnowledgeUpdateSettings	settings_
	Settings for modifications. More...

Private Member Functions
type	barrier_result (void) const
	Checks if current barrier is successful. More...

void	build_aggregate_barrier (void)
	Builds the aggregate barrier logic. More...

void	build_var (void)
	Builds the variable that is actually incremented. More...

virtual std::string	get_debug_info_ (void)
	Returns the type of the container along with name and any other useful information. More...

void	init_noharm (void)
	Initialize the no harm eval settings. More...

virtual bool	is_false_ (void) const
	Polymorphic is false method which can be used to determine if at least one value in the container is false. More...

virtual bool	is_true_ (void) const
	Polymorphic is true method which can be used to determine if all values in the container are true. More...

virtual void	modify_ (void)
	Polymorphic modify method used by collection containers. More...

Private Attributes
CompiledExpression	aggregate_barrier_
	Expression for aggregating barrier in one atomic operation. More...

ThreadSafeContext *	context_
	Variable context that we are modifying. More...

size_t	id_
	id of this barrier in the barrier ring More...

EvalSettings	no_harm
	Settings we'll use for all evaluations. More...

size_t	participants_
	the number of participants in the barrier ring More...

VariableReference	variable_
	Variable reference. More...

std::string	variable_name_
	Holder for variable name to quickly refresh modified status. More...

Detailed Description

This class stores an integer within a variable context.

Definition at line 33 of file Barrier.h.

Member Typedef Documentation

typedef knowledge::KnowledgeRecord::Integer madara::knowledge::containers::Barrier::type

trait that describes the value type

Definition at line 37 of file Barrier.h.

Constructor & Destructor Documentation

madara::knowledge::containers::Barrier::Barrier ( const KnowledgeUpdateSettings & settings = KnowledgeUpdateSettings () )

Default constructor.

Definition at line 9 of file Barrier.cpp.

madara::knowledge::containers::Barrier::Barrier	(	const std::string &	name,
		KnowledgeBase &	knowledge,
		const KnowledgeUpdateSettings &	settings = `KnowledgeUpdateSettings ()`
	)

Constructor.

Parameters

name	name of the integer in the knowledge base
knowledge	the knowledge base that will contain the vector
settings	settings for evaluating the vector

Definition at line 16 of file Barrier.cpp.

madara::knowledge::containers::Barrier::Barrier	(	const std::string &	name,
		Variables &	knowledge,
		const KnowledgeUpdateSettings &	settings = `KnowledgeUpdateSettings ()`
	)

Constructor.

Parameters

name	the name of the map within the variable context
knowledge	the variable context
settings	settings to apply by default

Definition at line 28 of file Barrier.cpp.

madara::knowledge::containers::Barrier::Barrier	(	const std::string &	name,
		KnowledgeBase &	knowledge,
		int	id,
		int	participants,
		const KnowledgeUpdateSettings &	settings = `KnowledgeUpdateSettings ()`
	)

Default constructor.

Parameters

name	name of the integer in the knowledge base
knowledge	the knowledge base that will contain the vector
id	the id of the barrier in the barrier ring
participants	the number of participants in the barrier ring
settings	settings for evaluating the vector

Definition at line 40 of file Barrier.cpp.

madara::knowledge::containers::Barrier::Barrier	(	const std::string &	name,
		Variables &	knowledge,
		int	id,
		int	participants,
		const KnowledgeUpdateSettings &	settings = `KnowledgeUpdateSettings ()`
	)

Default constructor.

Parameters

name	name of the integer in the knowledge base
knowledge	the knowledge base that will contain the vector
id	the id of the barrier in the barrier ring
participants	the number of participants in the barrier ring
settings	settings for evaluating the vector

Definition at line 54 of file Barrier.cpp.

madara::knowledge::containers::Barrier::Barrier ( const Barrier & rhs )

Copy constructor.

Definition at line 69 of file Barrier.cpp.

madara::knowledge::containers::Barrier::~Barrier ( )

Destructor.

Definition at line 81 of file Barrier.cpp.

Member Function Documentation

type madara::knowledge::containers::Barrier::barrier_result ( void ) const

inlineprivate

Checks if current barrier is successful.

Returns: 0 if unsuccessful, otherwise it is successful

Definition at line 330 of file Barrier.h.

void madara::knowledge::containers::Barrier::build_aggregate_barrier ( void )

private

Builds the aggregate barrier logic.

Definition at line 105 of file Barrier.cpp.

void madara::knowledge::containers::Barrier::build_var ( void )

private

Builds the variable that is actually incremented.

Definition at line 154 of file Barrier.cpp.

madara::knowledge::containers::BaseContainer * madara::knowledge::containers::Barrier::clone ( void ) const

virtual

Clones this container.

Returns: a deep copy of the container that must be managed by the user (i.e., you have to delete the return value)

Implements madara::knowledge::containers::BaseContainer.

Definition at line 445 of file Barrier.cpp.

std::string madara::knowledge::containers::Barrier::get_debug_info ( void )

Returns the type of the container along with name and any other useful information.

The provided information should be useful for developers wishing to debug container operations, especially as it pertains to pending network operations (i.e., when used in conjunction with modify)

Returns: info in format {container}: {name}{ = value, if appropriate}

Definition at line 397 of file Barrier.cpp.

std::string madara::knowledge::containers::Barrier::get_debug_info_ ( void )

privatevirtual

Returns the type of the container along with name and any other useful information.

The provided information should be useful for developers wishing to debug container operations, especially as it pertains to pending network operations (i.e., when used in conjunction with modify)

Returns: info in format {container}: {name}{ = value, if appropriate}

Implements madara::knowledge::containers::BaseContainer.

Definition at line 439 of file Barrier.cpp.

size_t madara::knowledge::containers::Barrier::get_id ( void ) const

Returns the id of the barrier in the barrier ring.

Returns: the id of the barrier

Definition at line 197 of file Barrier.cpp.

std::string madara::knowledge::containers::BaseContainer::get_name ( void ) const

inlineinherited

Returns the name of the container.

Returns: name of the container

Definition at line 5 of file BaseContainer.inl.

size_t madara::knowledge::containers::Barrier::get_participants ( void ) const

Returns the number of participants in the barrier ring.

Returns: the number of participants barriering

Definition at line 204 of file Barrier.cpp.

type madara::knowledge::containers::Barrier::get_round ( void ) const

inline

Returns the current barrier round.

Returns: the current barrier round number

Definition at line 129 of file Barrier.h.

madara::knowledge::KnowledgeUpdateSettings madara::knowledge::containers::BaseContainer::get_settings ( void )

inherited

Gets the update settings for the container.

Returns: the current settings

Definition at line 37 of file BaseContainer.cpp.

void madara::knowledge::containers::Barrier::init_noharm ( void )

private

Initialize the no harm eval settings.

Definition at line 186 of file Barrier.cpp.

bool madara::knowledge::containers::Barrier::is_done ( void )

Wait for all other participants to reach your barrier round.

Returns: true if barrier round is finished. False otherwise.

Definition at line 345 of file Barrier.cpp.

bool madara::knowledge::containers::Barrier::is_false ( void ) const

Determines if the barrier is false.

Returns: true if the barrier is false

Definition at line 515 of file Barrier.cpp.

bool madara::knowledge::containers::Barrier::is_false_ ( void ) const

privatevirtual

Polymorphic is false method which can be used to determine if at least one value in the container is false.

Implements madara::knowledge::containers::BaseContainer.

Definition at line 528 of file Barrier.cpp.

bool madara::knowledge::containers::Barrier::is_true ( void ) const

Determines if the barrier is true.

Returns: true if the barrier is true

Definition at line 494 of file Barrier.cpp.

bool madara::knowledge::containers::Barrier::is_true_ ( void ) const

privatevirtual

Polymorphic is true method which can be used to determine if all values in the container are true.

Implements madara::knowledge::containers::BaseContainer.

Definition at line 522 of file Barrier.cpp.

void madara::knowledge::containers::Barrier::modify ( void )

Mark the value as modified.

The barrier retains the same value but will resend its value as if it had been modified.

Definition at line 388 of file Barrier.cpp.

void madara::knowledge::containers::Barrier::modify_ ( void )

privatevirtual

Polymorphic modify method used by collection containers.

This method calls the modify method for this class. We separate the faster version (modify) from this version (modify_) to allow users the opportunity to have a fastery version that does not use polymorphic functions (generally virtual functions are half as efficient as normal function calls)

Implements madara::knowledge::containers::BaseContainer.

Definition at line 433 of file Barrier.cpp.

bool madara::knowledge::containers::BaseContainer::modify_if_false ( BaseContainer & conditional )

virtualinherited

Modifies the container if the argument is false.

Parameters

conditional the container that must be false to modify

Returns: true if the container was modified

Definition at line 64 of file BaseContainer.cpp.

bool madara::knowledge::containers::BaseContainer::modify_if_true ( BaseContainer & conditional )

virtualinherited

Modifies the container if the argument is true.

Parameters

conditional the container that must be true to modify

Returns: true if the container was modified

Definition at line 44 of file BaseContainer.cpp.

void madara::knowledge::containers::Barrier::next ( void )

Goes to the next barrier round.

Definition at line 334 of file Barrier.cpp.

bool madara::knowledge::containers::Barrier::operator!= ( const Barrier & value ) const

Checks for inequality.

Parameters

value the value to compare to

Returns: true if inequal, false otherwise

void madara::knowledge::containers::Barrier::operator= ( const Barrier & rhs )

Assignment operator.

Parameters

rhs	value to copy

Definition at line 87 of file Barrier.cpp.

madara::knowledge::containers::Barrier::type madara::knowledge::containers::Barrier::operator= ( type value )

Sets the value of the variable.

Parameters

value the new value of the variable

Returns: the updated value (should be same as value param)

Definition at line 290 of file Barrier.cpp.

bool madara::knowledge::containers::Barrier::operator== ( const Barrier & value ) const

Checks for equality.

Parameters

value the value to compare to

Returns: true if equal, false otherwise

void madara::knowledge::containers::Barrier::resize	(	size_t	id = `0`,
		size_t	participants = `1`
	)

Resizes the barrier, usually when number of participants change.

Parameters

id	the id of this barrier in the barrier ring
participants	the number of participants in barrier ring

Definition at line 274 of file Barrier.cpp.

void madara::knowledge::containers::Barrier::set ( type value )

Sets the barrier to a specific round.

Returns: the barrier round number

Definition at line 379 of file Barrier.cpp.

void madara::knowledge::containers::Barrier::set_name	(	const std::string &	var_name,
		KnowledgeBase &	knowledge,
		int	id,
		int	participants
	)

Sets the variable name that this refers to.

Parameters

var_name	the name of the variable in the knowledge base
knowledge	the knowledge base the variable is housed in
id	the id of the barrier in the barrier ring
participants	the number of participants in the barrier ring

Definition at line 211 of file Barrier.cpp.

void madara::knowledge::containers::Barrier::set_name	(	const std::string &	var_name,
		Variables &	knowledge,
		int	id,
		int	participants
	)

Sets the variable name that this refers to.

Parameters

var_name	the name of the variable in the knowledge base
knowledge	the knowledge base the variable is housed in
id	the id of the barrier in the barrier ring
participants	the number of participants in the barrier ring

Definition at line 232 of file Barrier.cpp.

void madara::knowledge::containers::Barrier::set_name	(	const std::string &	var_name,
		ThreadSafeContext &	knowledge,
		int	id,
		int	participants
	)

Sets the variable name that this refers to.

Parameters

var_name	the name of the variable in the knowledge base
knowledge	the knowledge base the variable is housed in
id	the id of the barrier in the barrier ring
participants	the number of participants in the barrier ring

Definition at line 253 of file Barrier.cpp.

void madara::knowledge::containers::Barrier::set_quality	(	uint32_t	quality,
		const KnowledgeReferenceSettings &	settings = `KnowledgeReferenceSettings (false)`
	)

Sets the quality of writing to the barrier variables.

Parameters

quality	quality of writing to this location
settings	settings for referring to knowledge variables

Definition at line 481 of file Barrier.cpp.

void madara::knowledge::containers::BaseContainer::set_settings ( const KnowledgeUpdateSettings & settings )

inherited

Sets the update settings for the container.

Parameters

settings the new settings to use

Definition at line 28 of file BaseContainer.cpp.

double madara::knowledge::containers::Barrier::to_double ( void ) const

Returns the barrier round number as a double.

Returns: the value as a double

Definition at line 451 of file Barrier.cpp.

madara::knowledge::KnowledgeRecord::Integer madara::knowledge::containers::Barrier::to_integer ( void ) const

Returns the barrier round number as an integer (same as *)

Returns: the value as an integer

Definition at line 318 of file Barrier.cpp.

madara::knowledge::KnowledgeRecord madara::knowledge::containers::Barrier::to_record ( void ) const

Returns the barrier round number as a knowledge::KnowledgeRecord.

This is useful for referencing clock and other record info.

Returns: the value as a knowledge::KnowledgeRecord

Definition at line 303 of file Barrier.cpp.

std::string madara::knowledge::containers::Barrier::to_string ( void ) const

Returns the barrier round number as a string.

Returns: the value as a string

Definition at line 466 of file Barrier.cpp.

Member Data Documentation

CompiledExpression madara::knowledge::containers::Barrier::aggregate_barrier_

private

Expression for aggregating barrier in one atomic operation.

Definition at line 368 of file Barrier.h.

ThreadSafeContext* madara::knowledge::containers::Barrier::context_

mutableprivate

Variable context that we are modifying.

Definition at line 348 of file Barrier.h.

size_t madara::knowledge::containers::Barrier::id_

private

id of this barrier in the barrier ring

Definition at line 358 of file Barrier.h.

MADARA_LOCK_TYPE madara::knowledge::containers::BaseContainer::mutex_

mutableprotectedinherited

guard for access and changes

Mutex for local changes

Definition at line 141 of file BaseContainer.h.

std::string madara::knowledge::containers::BaseContainer::name_

protectedinherited

Prefix of variable.

Definition at line 151 of file BaseContainer.h.

EvalSettings madara::knowledge::containers::Barrier::no_harm

private

Settings we'll use for all evaluations.

Definition at line 373 of file Barrier.h.

size_t madara::knowledge::containers::Barrier::participants_

private

the number of participants in the barrier ring

Definition at line 363 of file Barrier.h.

KnowledgeUpdateSettings madara::knowledge::containers::BaseContainer::settings_

protectedinherited

Settings for modifications.

Definition at line 156 of file BaseContainer.h.

VariableReference madara::knowledge::containers::Barrier::variable_

private

Variable reference.

Definition at line 353 of file Barrier.h.

std::string madara::knowledge::containers::Barrier::variable_name_

private

Holder for variable name to quickly refresh modified status.

Definition at line 378 of file Barrier.h.

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

include/madara/knowledge/containers/Barrier.h
include/madara/knowledge/containers/Barrier.cpp

Public Types

Public Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation