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As currently designed, with a callback registered in a ERROR_CLEANUP block, the shutdown callback would get called twice when updating archive_library on SIGHUP, which is something that we want to avoid to ease the life of extension writers. Anyway, an ERROR in the archiver process is treated as a FATAL, stopping it immediately, hence there is no need for a ERROR_CLEANUP block. Instead of that, the shutdown callback is not called upon before_shmem_exit(), giving to the modules the opportunity to do any cleanup actions before the server shuts down its subsystems. While on it, this commit adds some testing coverage for the shutdown callback. Neither shell_archive nor basic_archive have been using it, and one is added to shell_archive, whose trigger is checked in a TAP test through a shutdown sequence. Author: Nathan Bossart, Bharath Rupireddy Reviewed-by: Kyotaro Horiguchi, Michael Paquier Discussion: https://postgr.es/m/20221015221328.GB1821022@nathanxps13 Backpatch-through: 15
PostgreSQL tests ================ This directory contains a variety of test infrastructure as well as some of the tests in PostgreSQL. Not all tests are here -- in particular, there are more in individual contrib/ modules and in src/bin. Not all these tests get run by "make check". Check src/test/Makefile to see which tests get run automatically. authentication/ Tests for authentication (but see also below) examples/ Demonstration programs for libpq that double as regression tests via "make check" isolation/ Tests for concurrent behavior at the SQL level kerberos/ Tests for Kerberos/GSSAPI authentication and encryption ldap/ Tests for LDAP-based authentication locale/ Sanity checks for locale data, encodings, etc mb/ Tests for multibyte encoding (UTF-8) support modules/ Extensions used only or mainly for test purposes, generally not suitable for installing in production databases perl/ Infrastructure for Perl-based TAP tests recovery/ Test suite for recovery and replication regress/ PostgreSQL's main regression test suite, pg_regress ssl/ Tests to exercise and verify SSL certificate handling subscription/ Tests for logical replication