DDS_TopicQos Struct Reference

Structure that holds DDS_Topic Quality of Service policies. More...

Data Fields
DDS_TopicDataQosPolicy	topic_data
	A sequence of octets associated with a Topic.
DDS_DurabilityQosPolicy	durability
	The durability policy of the Topic.
DDS_DurabilityServiceQosPolicy	durability_service
	Configures the service supporting the TRANSIENT and PERSITENT durability kinds.
DDS_DeadlineQosPolicy	deadline
	Defines the expected update frequency for data instances within the Topic.
DDS_LatencyBudgetQosPolicy	latency_budget
	Identifies the 'urgency' of the data on the Topic. The middleware uses this to batch data samples is possible.
DDS_LivelinessQosPolicy	liveliness
	Identifies the mechanism used to detect and maintain livelines of DataWriters on the Topic.
DDS_ReliabilityQosPolicy	reliability
	Indicates the level of transport reliability on the Topic.
DDS_DestinationOrderQosPolicy	destination_order
	The ordering of received samples on the Topic will be either by SOURCE or RECEPTION timestamp.
DDS_HistoryQosPolicy	history
	The amount of historical data maintained for the Topic.
DDS_ResourceLimitsQosPolicy	resource_limits
	The resource limitations for the Topic.
DDS_TransportPriorityQosPolicy	transport_priority
	The priority to be used for messages on the Topic.
DDS_LifespanQosPolicy	lifespan
	The 'expiration time' for old data samples on the Topic.
DDS_OwnershipQosPolicy	ownership
	The type of 'ownership' expected for data instances on the Topic.
DDS_DataRepresentationQosPolicy	representation
	The data representation(s) supported by Writer(s) and Reader(s) of this topic. The first entry in the 'value' sequence corresponds to the Writer(s), all entries apply to Reader(s).
CoreDX_EntityNameQosPolicy	entity_name
	entity_name
CoreDX_LoggingQosPolicy	logging
	logging

Detailed Description

Structure that holds DDS_Topic Quality of Service policies.

See also

• DDS_Topic_set_qos()
• DDS_Topic_get_qos()
• DDS_DomainParticipant_create_topic()
• DDS_DomainParticipant_set_default_topic_qos()