ros::SubscribeOptions Struct Reference

Encapsulates all options available for creating a Subscriber. More...

#include <subscribe_options.h>

List of all members.

Public Member Functions
template<class M >
void	init (const std::string &_topic, uint32_t _queue_size, const boost::function< void(const boost::shared_ptr< M const > &)> &_callback, const boost::function< boost::shared_ptr< M >(void)> &factory_fn=DefaultMessageCreator< M >())
	Templated initialization, templated on message type. Only supports "const boost::shared_ptr<M const>&" callback types.
template<class P >
void	initByFullCallbackType (const std::string &_topic, uint32_t _queue_size, const boost::function< void(P)> &_callback, const boost::function< boost::shared_ptr< typename ParameterAdapter< P >::Message >(void)> &factory_fn=DefaultMessageCreator< typename ParameterAdapter< P >::Message >())
	Templated initialization, templated on callback parameter type. Supports any callback parameters supported by the SubscriptionCallbackAdapter.
	SubscribeOptions (const std::string &_topic, uint32_t _queue_size, const std::string &_md5sum, const std::string &_datatype)
	Constructor.
	SubscribeOptions ()
Static Public Member Functions
template<class M >
static SubscribeOptions	create (const std::string &topic, uint32_t queue_size, const boost::function< void(const boost::shared_ptr< M const > &)> &callback, const VoidConstPtr &tracked_object, CallbackQueueInterface *queue)
	Templated helper function for creating an AdvertiseServiceOptions with most of its options.
Public Attributes
bool	allow_concurrent_callbacks
CallbackQueueInterface *	callback_queue
	Queue to add callbacks to. If NULL, the global callback queue will be used.
std::string	datatype
	Datatype of the message we'd like to subscribe as.
SubscriptionCallbackHelperPtr	helper
	Helper object used to get create messages and call callbacks.
std::string	md5sum
	MD5 of the message datatype.
uint32_t	queue_size
	Number of incoming messages to queue up for processing (messages in excess of this queue capacity will be discarded).
std::string	topic
	Topic to subscribe to.
VoidConstPtr	tracked_object
	An object whose destruction will prevent the callback associated with this subscription.
TransportHints	transport_hints
	Hints for transport type and options.

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Detailed Description

Encapsulates all options available for creating a Subscriber.

Definition at line 42 of file subscribe_options.h.

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Constructor & Destructor Documentation

ros::SubscribeOptions::SubscribeOptions

(

)

[inline]

Definition at line 47 of file subscribe_options.h.

ros::SubscribeOptions::SubscribeOptions	(	const std::string &	_topic,
		uint32_t	_queue_size,
		const std::string &	_md5sum,
		const std::string &	_datatype
	)			[inline]

Constructor.

Parameters:

	_topic	Topic to subscribe on
	_queue_size	Number of incoming messages to queue up for processing (messages in excess of this queue capacity will be discarded).
	_md5sum
	_datatype

Definition at line 63 of file subscribe_options.h.

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Member Function Documentation

template<class M >

static SubscribeOptions ros::SubscribeOptions::create	(	const std::string &	topic,
		uint32_t	queue_size,
		const boost::function< void(const boost::shared_ptr< M const > &)> &	callback,
		const VoidConstPtr &	tracked_object,
		CallbackQueueInterface *	queue
	)			[inline, static]

Templated helper function for creating an AdvertiseServiceOptions with most of its options.

Parameters:

	topic	Topic name to subscribe to
	queue_size	Number of incoming messages to queue up for processing (messages in excess of this queue capacity will be discarded).
	callback	The callback to invoke when a message is received on this topic
	tracked_object	The tracked object to use (see SubscribeOptions::tracked_object)
	queue	The callback queue to use (see SubscribeOptions::callback_queue)

Definition at line 153 of file subscribe_options.h.

template<class M >

void ros::SubscribeOptions::init	(	const std::string &	_topic,
		uint32_t	_queue_size,
		const boost::function< void(const boost::shared_ptr< M const > &)> &	_callback,
		const boost::function< boost::shared_ptr< M >(void)> &	factory_fn = DefaultMessageCreator<M>()
	)			[inline]

Templated initialization, templated on message type. Only supports "const boost::shared_ptr<M const>&" callback types.

Parameters:

	_topic	Topic to subscribe on
	_queue_size	Number of incoming messages to queue up for processing (messages in excess of this queue capacity will be discarded).
	_callback	Callback to call when a message arrives on this topic

Definition at line 102 of file subscribe_options.h.

template<class P >

void ros::SubscribeOptions::initByFullCallbackType	(	const std::string &	_topic,
		uint32_t	_queue_size,
		const boost::function< void(P)> &	_callback,
		const boost::function< boost::shared_ptr< typename ParameterAdapter< P >::Message >(void)> &	factory_fn = DefaultMessageCreator<typename ParameterAdapter<P>::Message>()
	)			[inline]

Templated initialization, templated on callback parameter type. Supports any callback parameters supported by the SubscriptionCallbackAdapter.

Parameters:

	_topic	Topic to subscribe on
	_queue_size	Number of incoming messages to queue up for processing (messages in excess of this queue capacity will be discarded).
	_callback	Callback to call when a message arrives on this topic

Definition at line 81 of file subscribe_options.h.

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Member Data Documentation

bool ros::SubscribeOptions::allow_concurrent_callbacks

By default subscription callbacks are guaranteed to arrive in-order, with only one callback happening for this subscription at any given time. Setting this to true allows you to receive multiple messages on the same topic from multiple threads at the same time

Definition at line 126 of file subscribe_options.h.

CallbackQueueInterface* ros::SubscribeOptions::callback_queue

Queue to add callbacks to. If NULL, the global callback queue will be used.

Definition at line 122 of file subscribe_options.h.

std::string ros::SubscribeOptions::datatype

Datatype of the message we'd like to subscribe as.

Definition at line 118 of file subscribe_options.h.

SubscriptionCallbackHelperPtr ros::SubscribeOptions::helper

Helper object used to get create messages and call callbacks.

Definition at line 120 of file subscribe_options.h.

std::string ros::SubscribeOptions::md5sum

MD5 of the message datatype.

Definition at line 117 of file subscribe_options.h.

uint32_t ros::SubscribeOptions::queue_size

Number of incoming messages to queue up for processing (messages in excess of this queue capacity will be discarded).

Definition at line 115 of file subscribe_options.h.

std::string ros::SubscribeOptions::topic

Topic to subscribe to.

Definition at line 114 of file subscribe_options.h.

VoidConstPtr ros::SubscribeOptions::tracked_object

An object whose destruction will prevent the callback associated with this subscription.

A shared pointer to an object to track for these callbacks. If set, the a weak_ptr will be created to this object, and if the reference count goes to 0 the subscriber callbacks will not get called.

Note:

Note that setting this will cause a new reference to be added to the object before the callback, and for it to go out of scope (and potentially be deleted) in the code path (and therefore thread) that the callback is invoked from.

Definition at line 138 of file subscribe_options.h.

TransportHints ros::SubscribeOptions::transport_hints

Hints for transport type and options.

Definition at line 140 of file subscribe_options.h.

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

• subscribe_options.h