DOKK / manpages / debian 10 / systemtap-doc / probe::json_data.3stap.en
PROBE::JSON_DATA(3stap) JSON Tapset PROBE::JSON_DATA(3stap)

probe::json_data - Fires whenever JSON data is wanted by a reader.

json_data 

None

This probe fires when the JSON data is about to be read. This probe must gather up data and then call the following macros to output the data in JSON format. First, @json_output_data_start must be called. That call is followed by one or more of the following (one call for each data item): @json_output_string_value, @json_output_numeric_value, @json_output_array_string_value, and @json_output_array_numeric_value. Finally @json_output_data_end must be called.

tapset::json(3stap)

October 2018 SystemTap Tapset Reference