DDS_DataReaderQos Struct Reference
[DataReaders]

QoS policies supported by a DDSDataReader entity. More...

List of all members.

Public Attributes
struct DDS_DurabilityQosPolicy	durability
	Durability policy, DURABILITY.
struct DDS_DeadlineQosPolicy	deadline
	Deadline policy, DEADLINE.
struct DDS_LatencyBudgetQosPolicy	latency_budget
	Latency budget policy, LATENCY_BUDGET.
struct DDS_LivelinessQosPolicy	liveliness
	Liveliness policy, LIVELINESS.
struct DDS_ReliabilityQosPolicy	reliability
	Reliability policy, RELIABILITY.
struct DDS_DestinationOrderQosPolicy	destination_order
	Destination order policy, DESTINATION_ORDER.
struct DDS_HistoryQosPolicy	history
	History policy, HISTORY.
struct DDS_ResourceLimitsQosPolicy	resource_limits
	Resource limits policy, RESOURCE_LIMITS.
struct DDS_UserDataQosPolicy	user_data
	User data policy, USER_DATA.
struct DDS_OwnershipQosPolicy	ownership
	Ownership policy, OWNERSHIP.
struct DDS_TimeBasedFilterQosPolicy	time_based_filter
	Time-based filter policy, TIME_BASED_FILTER.
struct DDS_ReaderDataLifecycleQosPolicy	reader_data_lifecycle
	Reader data lifecycle policy, READER_DATA_LIFECYCLE.
struct DDS_DataReaderResourceLimitsQosPolicy	reader_resource_limits
	<<eXtension>> DDSDataReader resource limits policy, DATA_READER_RESOURCE_LIMITS. This policy is an extension to the DDS standard.
struct DDS_DataReaderProtocolQosPolicy	protocol
	<<eXtension>> DDSDataReader protocol policy, DATA_READER_PROTOCOL
struct DDS_TransportSelectionQosPolicy	transport_selection
	<<eXtension>> Transport selection policy, TRANSPORT_SELECTION.
struct DDS_TransportUnicastQosPolicy	unicast
	<<eXtension>> Unicast transport policy, TRANSPORT_UNICAST.
struct DDS_TransportMulticastQosPolicy	multicast
	<<eXtension>> Multicast transport policy, TRANSPORT_MULTICAST.
struct DDS_PropertyQosPolicy	property
	<<eXtension>> Property policy, PROPERTY.
struct DDS_AvailabilityQosPolicy	availability
	<<eXtension>> Availability policy, AVAILABILITY.
struct DDS_EntityNameQosPolicy	subscription_name
	<<eXtension>> EntityName policy, ENTITY_NAME.
struct DDS_TypeSupportQosPolicy	type_support
	<<eXtension>> type support data, TYPESUPPORT.

---

Detailed Description

QoS policies supported by a DDSDataReader entity.

You must set certain members in a consistent manner:

DDS_DataReaderQos::deadline.period >= DDS_DataReaderQos::time_based_filter.minimum_separation

DDS_DataReaderQos::history.depth <= DDS_DataReaderQos::resource_limits.max_samples_per_instance

DDS_DataReaderQos::resource_limits.max_samples_per_instance <= DDS_DataReaderQos::resource_limits.max_samples DDS_DataReaderQos::resource_limits.initial_samples <= DDS_DataReaderQos::resource_limits.max_samples

DDS_DataReaderQos::resource_limits.initial_instances <= DDS_DataReaderQos::resource_limits.max_instances

DDS_DataReaderQos::reader_resource_limits.initial_remote_writers_per_instance <= DDS_DataReaderQos::reader_resource_limits.max_remote_writers_per_instance

DDS_DataReaderQos::reader_resource_limits.initial_infos <= DDS_DataReaderQos::reader_resource_limits.max_infos

DDS_DataReaderQos::reader_resource_limits.max_remote_writers_per_instance <= DDS_DataReaderQos::reader_resource_limits.max_remote_writers

DDS_DataReaderQos::reader_resource_limits.max_samples_per_remote_writer <= DDS_DataReaderQos::resource_limits.max_samples

length of DDS_DataReaderQos::user_data.value <= DDS_DomainParticipantQos::resource_limits.reader_user_data_max_length

If any of the above are not true, DDSDataReader::set_qos and DDSDataReader::set_qos_with_profile will fail with DDS_RETCODE_INCONSISTENT_POLICY

---

Member Data Documentation

struct DDS_DurabilityQosPolicy DDS_DataReaderQos::durability [read]

Durability policy, DURABILITY.

struct DDS_DeadlineQosPolicy DDS_DataReaderQos::deadline [read]

Deadline policy, DEADLINE.

struct DDS_LatencyBudgetQosPolicy DDS_DataReaderQos::latency_budget [read]

Latency budget policy, LATENCY_BUDGET.

struct DDS_LivelinessQosPolicy DDS_DataReaderQos::liveliness [read]

Liveliness policy, LIVELINESS.

struct DDS_ReliabilityQosPolicy DDS_DataReaderQos::reliability [read]

Reliability policy, RELIABILITY.

struct DDS_DestinationOrderQosPolicy DDS_DataReaderQos::destination_order [read]

Destination order policy, DESTINATION_ORDER.

struct DDS_HistoryQosPolicy DDS_DataReaderQos::history [read]

History policy, HISTORY.

struct DDS_ResourceLimitsQosPolicy DDS_DataReaderQos::resource_limits [read]

Resource limits policy, RESOURCE_LIMITS.

struct DDS_UserDataQosPolicy DDS_DataReaderQos::user_data [read]

User data policy, USER_DATA.

struct DDS_OwnershipQosPolicy DDS_DataReaderQos::ownership [read]

Ownership policy, OWNERSHIP.

struct DDS_TimeBasedFilterQosPolicy DDS_DataReaderQos::time_based_filter [read]

Time-based filter policy, TIME_BASED_FILTER.

struct DDS_ReaderDataLifecycleQosPolicy DDS_DataReaderQos::reader_data_lifecycle [read]

Reader data lifecycle policy, READER_DATA_LIFECYCLE.

struct DDS_DataReaderResourceLimitsQosPolicy DDS_DataReaderQos::reader_resource_limits [read]

<<eXtension>> DDSDataReader resource limits policy, DATA_READER_RESOURCE_LIMITS. This policy is an extension to the DDS standard.

struct DDS_DataReaderProtocolQosPolicy DDS_DataReaderQos::protocol [read]

<<eXtension>> DDSDataReader protocol policy, DATA_READER_PROTOCOL

struct DDS_TransportSelectionQosPolicy DDS_DataReaderQos::transport_selection [read]

<<eXtension>> Transport selection policy, TRANSPORT_SELECTION.

Specifies the transports available for use by the DDSDataReader.

struct DDS_TransportUnicastQosPolicy DDS_DataReaderQos::unicast [read]

<<eXtension>> Unicast transport policy, TRANSPORT_UNICAST.

Specifies the unicast transport interfaces and ports on which messages can be received.

The unicast interfaces are used to receive messages from DDSDataWriter entities in the domain.

struct DDS_TransportMulticastQosPolicy DDS_DataReaderQos::multicast [read]

<<eXtension>> Multicast transport policy, TRANSPORT_MULTICAST.

Specifies the multicast group addresses and ports on which messages can be received.

The multicast addresses are used to receive messages from DDSDataWriter entities in the domain.

struct DDS_PropertyQosPolicy DDS_DataReaderQos::property [read]

<<eXtension>> Property policy, PROPERTY.

struct DDS_AvailabilityQosPolicy DDS_DataReaderQos::availability [read]

<<eXtension>> Availability policy, AVAILABILITY.

struct DDS_EntityNameQosPolicy DDS_DataReaderQos::subscription_name [read]

<<eXtension>> EntityName policy, ENTITY_NAME.

struct DDS_TypeSupportQosPolicy DDS_DataReaderQos::type_support [read]

<<eXtension>> type support data, TYPESUPPORT.

Optional value that is passed to a type plugin's on_endpoint_attached and deserialization functions.