DDS_PublicationMatchedStatus Struct Reference

DDS_PUBLICATION_MATCHED_STATUS More...

Public Attributes
DDS_Long	total_count
	The total cumulative number of times the concerned DDSDataWriter discovered a "match" with a DDSDataReader.
DDS_Long	total_count_change
	The incremental changes in total_count since the last time the listener was called or the status was read.
DDS_Long	current_count
	The current number of readers with which the DDSDataWriter is matched.
DDS_Long	current_count_peak
	<<extension>> The highest value that current_count has reached until now.
DDS_Long	current_count_change
	The change in current_count since the last time the listener was called or the status was read.
DDS_InstanceHandle_t	last_subscription_handle
	A handle to the last DDSDataReader that caused the the DDSDataWriter's status to change.

Detailed Description

DDS_PUBLICATION_MATCHED_STATUS

A "match" happens when the DDSDataWriter finds a DDSDataReader for the same DDSTopic and common partition with a requested QoS that is compatible with that offered by the DDSDataWriter.

This status is also changed (and the listener, if any, called) when a match is ended. A local DDSDataWriter will become "unmatched" from a remote DDSDataReader when that DDSDataReader goes away for any reason.

Member Data Documentation

DDS_Long DDS_PublicationMatchedStatus::total_count

The total cumulative number of times the concerned DDSDataWriter discovered a "match" with a DDSDataReader.

This number increases whenever a new match is discovered. It does not change when an existing match goes away.

DDS_Long DDS_PublicationMatchedStatus::total_count_change

The incremental changes in total_count since the last time the listener was called or the status was read.

DDS_Long DDS_PublicationMatchedStatus::current_count

The current number of readers with which the DDSDataWriter is matched.

This number increases when a new match is discovered and decreases when an existing match goes away.

DDS_Long DDS_PublicationMatchedStatus::current_count_peak

<<extension>> The highest value that current_count has reached until now.

DDS_Long DDS_PublicationMatchedStatus::current_count_change

The change in current_count since the last time the listener was called or the status was read.

DDS_InstanceHandle_t DDS_PublicationMatchedStatus::last_subscription_handle

A handle to the last DDSDataReader that caused the the DDSDataWriter's status to change.