DDS_LivelinessChangedStatus Struct Reference
[DataReaders]

DDS_LIVELINESS_CHANGED_STATUS More...


Data Fields

DDS_Long alive_count
 The total count of currently alive DDS_DataWriter entities that write the DDS_Topic the DDS_DataReader reads.
DDS_Long not_alive_count
 The total count of currently not_alive DDS_DataWriter entities that write the DDS_Topic the DDS_DataReader reads.
DDS_Long alive_count_change
 The change in the alive_count since the last time the listener was called or the status was read.
DDS_Long not_alive_count_change
 The change in the not_alive_count since the last time the listener was called or the status was read.
DDS_InstanceHandle_t last_publication_handle
 An instance handle to the last remote writer to change its liveliness.


Detailed Description

DDS_LIVELINESS_CHANGED_STATUS

The DDS_DataReaderListener::on_liveliness_changed callback may be invoked for the following reasons:

Examples:

HelloWorld_subscriber.c.


Field Documentation

The total count of currently alive DDS_DataWriter entities that write the DDS_Topic the DDS_DataReader reads.

The total count of currently not_alive DDS_DataWriter entities that write the DDS_Topic the DDS_DataReader reads.

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

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

An instance handle to the last remote writer to change its liveliness.


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