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9324c8c580
This macro allows dynamically loaded shared libraries (modules) to provide a wired-in module name and version, and possibly other compile-time-constant fields in future. This information can be retrieved with the new pg_get_loaded_modules() function. This feature is expected to be particularly useful for modules that do not have any exposed SQL functionality and thus are not associated with a SQL-level extension object. But even for modules that do belong to extensions, being able to verify the actual code version can be useful. Author: Andrei Lepikhov <lepihov@gmail.com> Reviewed-by: Yurii Rashkovskii <yrashk@omnigres.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/dd4d1b59-d0fe-49d5-b28f-1e463b68fa32@gmail.com