rmw_event_payload_t Union Reference

#include <rmw_event.h>

Collaboration diagram for rmw_event_payload_t:

Data Fields
rmw_count_status_t	count
rmw_incompatible_type_status_t	incompatible_type
rmw_liveliness_changed_status_t	liveliness_changed
rmw_matched_status_t	matched

Detailed Description

Borrow-shaped union the backend supplies to the registered callback. The kind argument selects which member is valid.

Members are APPENDED (issue 1972 grew it from 8 to 16 bytes). A caller owns the union it hands *_take_event, so a backend built against the older, smaller header writes within the larger one.

Field Documentation

count

rmw_count_status_t rmw_event_payload_t::count

incompatible_type

rmw_incompatible_type_status_t rmw_event_payload_t::incompatible_type

liveliness_changed

rmw_liveliness_changed_status_t rmw_event_payload_t::liveliness_changed

matched

rmw_matched_status_t rmw_event_payload_t::matched

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The documentation for this union was generated from the following file:

• include/nros/rmw_event.h