A struct storing the liveliness changed status. More...
#include <LivelinessChangedStatus.hpp>
Public Attributes | |
int32_t | alive_count = 0 |
The total number of currently active publishers that write the topic read by the subscriber. | |
int32_t | not_alive_count = 0 |
The total count of current publishers that write the topic read by the subscriber that are no longer asserting their liveliness. | |
int32_t | alive_count_change = 0 |
The change in the alive_count since the last time the listener was called or the status was read. | |
int32_t | not_alive_count_change = 0 |
The change in the not_alive_count since the last time the listener was called or the status was read. | |
InstanceHandle_t | last_publication_handle |
Handle to the last publisher whose change in liveliness caused this status to change. | |
A struct storing the liveliness changed status.
int32_t alive_count = 0 |
The total number of currently active publishers that write the topic read by the subscriber.
This count increases when a newly matched publisher asserts its liveliness for the first time or when a publisher previously considered to be not alive reasserts its liveliness. The count decreases when a publisher considered alive fails to assert its liveliness and becomes not alive, whether because it was deleted normally or for some other reason
int32_t alive_count_change = 0 |
The change in the alive_count since the last time the listener was called or the status was read.
InstanceHandle_t last_publication_handle |
Handle to the last publisher whose change in liveliness caused this status to change.
int32_t not_alive_count = 0 |
The total count of current publishers that write the topic read by the subscriber that are no longer asserting their liveliness.
This count increases when a publisher considered alive fails to assert its liveliness and becomes not alive for some reason other than the normal deletion of that publisher. It decreases when a previously not alive publisher either reasserts its liveliness or is deleted normally
int32_t not_alive_count_change = 0 |
The change in the not_alive_count since the last time the listener was called or the status was read.