DDS::SubscriptionMatchedStatus Struct Reference
[DataReaders]

DDS::StatusKind::SUBSCRIPTION_MATCHED_STATUS More...

#include <managed_subscription.h>

List of all members.

Public Attributes

System::Int32 total_count
 The total cumulative number of times the concerned DDS::DataReader discovered a "match" with a DDS::DataWriter.
System::Int32 total_count_change
 The change in total_count since the last time the listener was called or the status was read.
System::Int32 current_count
 The current number of writers with which the DDS::DataReader is matched.
System::Int32 current_count_peak
 <<eXtension>> The highest value that current_count has reached until now.
System::Int32 current_count_change
 The change in current_count since the last time the listener was called or the status was read.
InstanceHandle_t last_publication_handle
 A handle to the last DDS::DataWriter that caused the status to change.


Detailed Description

DDS::StatusKind::SUBSCRIPTION_MATCHED_STATUS

A "match" happens when the DDS::DataReader finds a DDS::DataWriter for the same DDS::Topic with an offered QoS that is compatible with that requested by the DDS::DataReader.

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

Examples:

HelloWorld_subscriber.cpp.


Member Data Documentation

The total cumulative number of times the concerned DDS::DataReader discovered a "match" with a DDS::DataWriter.

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

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

The current number of writers with which the DDS::DataReader is matched.

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

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

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

A handle to the last DDS::DataWriter that caused the status to change.


RTI Data Distribution Service .Net APIs Version 4.5c Copyright © 9 Jun 2010 Real-Time Innovations, Inc