Instance Lifecycle

QoS that control the lifecycle of instances.

QoS that control the lifecycle of instances.

Use these QoS fields to configure how RTI Connext manages instance lifecycles and resources in the DataReader and DataWriter queues.

Basic Settings

DDS_ResourceLimitsQosPolicy	max_instances
	<<basic>> <<spec>> Represents the maximum number of instances a DDSDataWriter (or DDSDataReader) can manage.
DDS_ResourceLimitsQosPolicy	initial_instances
	<<basic>> <<extension>> Represents the initial number of instances a DDSDataWriter (or DDSDataReader) will manage.

Advanced Settings

DDS_DurabilityServiceQosPolicy	service_cleanup_delay
	<<spec>> Controls when the service is able to remove all information regarding a data instances.
DDS_DurabilityServiceQosPolicy	max_instances
	<<spec>> Part of resource limits QoS policy to apply when feeding a late joiner.
DDS_DurabilityServiceQosPolicy	max_samples_per_instance
	<<spec>> Part of resource limits QoS policy to apply when feeding a late joiner.
DDS_ReliabilityQosPolicy	instance_state_consistency_kind
	<<extension>> Whether instance state consistency is enabled
DDS_ResourceLimitsQosPolicy	max_samples_per_instance
	<<spec>> Represents the maximum number of samples of any one instance a DDSDataWriter (or DDSDataReader) can manage.
DDS_ResourceLimitsQosPolicy	instance_hash_buckets
	[DEPRECATED] <<extension>> Number of hash buckets for instances.
DDS_WriterDataLifecycleQosPolicy	autodispose_unregistered_instances
	<<spec>> Boolean flag that controls whether or not a writer will also dispose of an instance when the DDSDataWriter unregisters from the instance by means of the unregister operations.
DDS_WriterDataLifecycleQosPolicy	autopurge_unregistered_instances_delay
	<<extension>> Maximum duration for which the DDSDataWriter will maintain information regarding an instance once it has unregistered the instance.
DDS_WriterDataLifecycleQosPolicy	autopurge_disposed_instances_delay
	<<extension>> Maximum duration for which the DDSDataWriter will maintain information regarding an instance once it has disposed the instance.
DDS_ReaderDataLifecycleQosPolicy	autopurge_nowriter_samples_delay
	<<spec>> Minimum duration for which the DDSDataReader will maintain samples for an instance once its instance_state becomes DDS_NOT_ALIVE_NO_WRITERS_INSTANCE_STATE.
DDS_ReaderDataLifecycleQosPolicy	autopurge_disposed_samples_delay
	<<spec>> Minimum duration for which the DDSDataReader will maintain samples for an instance once its instance_state becomes DDS_NOT_ALIVE_DISPOSED_INSTANCE_STATE.
DDS_ReaderDataLifecycleQosPolicy	autopurge_disposed_instances_delay
	<<extension>> Minimum duration for which the DDSDataReader will maintain information about a received instance once its instance_state becomes DDS_NOT_ALIVE_DISPOSED_INSTANCE_STATE and there are no samples for the instance in the DataReader queue.
DDS_ReaderDataLifecycleQosPolicy	autopurge_nowriter_instances_delay
	<<extension>> Minimum duration for which the DDSDataReader will maintain information about a received instance once its instance_state becomes DDS_NOT_ALIVE_NO_WRITERS_INSTANCE_STATE and there are no samples for the instance in the DataReader queue.
DDS_DataReaderResourceLimitsQosPolicy	max_total_instances
	<<extension>> Maximum number of instances for which a DataReader will keep state.
DDS_DataReaderResourceLimitsQosPolicy	keep_minimum_state_for_instances
	<<extension>> Whether or not keep a minimum instance state for up to DDS_DataReaderResourceLimitsQosPolicy::max_total_instances.
DDS_DataReaderResourceLimitsQosPolicy	instance_replacement
	<<extension>> Sets the kind of instances allowed to be replaced for each instance state (DDS_InstanceStateKind) when a DataReader reaches DDS_ResourceLimitsQosPolicy::max_instances.
DDS_DataReaderResourceLimitsQosPolicy	autopurge_remote_not_alive_writer_delay
	<<extension>> Maximum duration for which the DDSDataReader will maintain information regarding a DDSDataWriter once the DDSDataWriter has become not alive.
DDS_DataWriterResourceLimitsQosPolicy	instance_replacement
	<<extension>> Sets the kinds of instances allowed to be replaced when instance resource limits are reached.
DDS_DataWriterResourceLimitsQosPolicy	replace_empty_instances
	<<extension>> Whether or not to replace empty instances during instance replacement
DDS_DataWriterResourceLimitsQosPolicy	autoregister_instances
	[DEPRECATED] <<extension>> Whether or not to automatically register new instances
DDS_DataReaderProtocolQosPolicy	propagate_dispose_of_unregistered_instances
	<<extension>> Indicates whether or not an instance can move to the DDS_NOT_ALIVE_DISPOSED_INSTANCE_STATE state without being in the DDS_ALIVE_INSTANCE_STATE state.
DDS_DataReaderProtocolQosPolicy	propagate_unregister_of_disposed_instances
	<<extension>> Indicates whether or not an instance can move to the DDS_NOT_ALIVE_NO_WRITERS_INSTANCE_STATE state directly from the DDS_NOT_ALIVE_DISPOSED_INSTANCE_STATE.
DDS_DataWriterProtocolQosPolicy	disable_inline_keyhash
	<<extension>> Controls whether or not a keyhash is propagated on the wire with each sample.
DDS_DataWriterProtocolQosPolicy	serialize_key_with_dispose
	<<extension>> Controls whether or not the serialized key is propagated on the wire with dispose samples.
DDS_DiscoveryConfigQosPolicy	publication_writer_data_lifecycle
	<<extension>> Writer data lifecycle settings for a built-in publication writer.
DDS_DiscoveryConfigQosPolicy	subscription_writer_data_lifecycle
	<<extension>> Writer data lifecycle settings for a built-in subscription writer.
DDS_DiscoveryConfigQosPolicy	service_request_writer_data_lifecycle
	<<extension>> Writer data lifecycle settings for a built-in DDS_ServiceRequest writer.
DDS_DiscoveryConfigQosPolicy	participant_configuration_writer_data_lifecycle
	<<extension>> Writer data lifecycle settings for a built-in participant configuration writer.