OWNERSHIP
[QoS Policies]

Specifies whether it is allowed for multiple DDSDataWriter (s) to write the same instance of the data and if so, how these modifications should be arbitrated. More...

Classes

struct  DDS_OwnershipQosPolicy
 Specifies whether it is allowed for multiple DDSDataWriter (s) to write the same instance of the data and if so, how these modifications should be arbitrated. More...

Enumerations

enum  DDS_OwnershipQosPolicyKind {
  DDS_SHARED_OWNERSHIP_QOS,
  DDS_EXCLUSIVE_OWNERSHIP_QOS
}
 Kinds of ownership. More...

Variables

const char *const DDS_OWNERSHIP_QOS_POLICY_NAME
 Stringified human-readable name for DDS_OwnershipQosPolicy.

Detailed Description

Specifies whether it is allowed for multiple DDSDataWriter (s) to write the same instance of the data and if so, how these modifications should be arbitrated.


Enumeration Type Documentation

Kinds of ownership.

QoS:
DDS_OwnershipQosPolicy
Enumerator:
DDS_SHARED_OWNERSHIP_QOS  [default] Indicates shared ownership for each instance.

Multiple writers are allowed to update the same instance and all the updates are made available to the readers. In other words there is no concept of an owner for the instances.

This is the default behavior if the OWNERSHIP policy is not specified or supported.

DDS_EXCLUSIVE_OWNERSHIP_QOS  Indicates each instance can only be owned by one DDSDataWriter, but the owner of an instance can change dynamically.

The selection of the owner is controlled by the setting of the OWNERSHIP_STRENGTH policy. The owner is always set to be the highest-strength DDSDataWriter object among the ones currently active (as determined by the LIVELINESS).


Variable Documentation

const char* const DDS_OWNERSHIP_QOS_POLICY_NAME

Stringified human-readable name for DDS_OwnershipQosPolicy.


RTI Data Distribution Service C++ API Version 4.5e Copyright © 23 Oct 2011 Real-Time Innovations, Inc