postgresql

mirror of https://github.com/postgres/postgres.git synced 2026-02-16 00:57:52 -05:00

History

Tom Lane 6310809c4a Fix check for conflicting session- vs transaction-level locks. We have an implementation restriction that PREPARE TRANSACTION can't handle cases where both session-lifespan and transaction-lifespan locks are held on the same lockable object. (That's because we'd otherwise need to acquire a new PROCLOCK entry during post-prepare cleanup, which is an operation that might fail. The situation can only arise with odd usages of advisory locks, so removing the restriction is probably not worth the amount of effort it would take.) AtPrepare_Locks attempted to enforce this, but its logic was many bricks shy of a load, because it only detected cases where the session and transaction locks had the same lockmode. Locks of different modes on the same object would lead to the rather unhelpful message "PANIC: we seem to have dropped a bit somewhere". To fix, build a transient hashtable with one entry per locktag, not one per locktag + mode, and use that to detect conflicts. Per bug #17122 from Alexander Pyhalov. This bug is ancient, so back-patch to all supported branches. Discussion: https://postgr.es/m/17122-04f3c32098a62233@postgresql.org		2021-07-24 18:35:52 -04:00
..
authentication	Initial pgindent and pgperltidy run for v14.	2021-05-12 13:14:10 -04:00
examples	libpq: Remove deprecated connection parameters authtype and tty	2021-03-09 15:01:22 +01:00
isolation	Rename debug_invalidate_system_caches_always to debug_discard_caches.	2021-07-13 15:01:01 -04:00
kerberos	Initial pgindent and pgperltidy run for v14.	2021-05-12 13:14:10 -04:00
ldap	Add a copyright notice to perl files lacking one.	2021-05-07 10:56:14 -04:00
locale	Remove extraneous newlines added by perl copyright patch	2021-05-07 11:37:37 -04:00
mb	Fix MB regression tests for WAL-logging of hash indexes.	2017-03-15 07:25:36 -04:00
modules	Use l*_node() family of functions where appropriate	2021-07-19 08:20:24 +02:00
perl	Improve TestLib::system_or_bail error reporting	2021-07-06 17:51:59 -04:00
recovery	Make new replication slot test code even less racy	2021-07-19 17:21:07 -04:00
regress	Fix check for conflicting session- vs transaction-level locks.	2021-07-24 18:35:52 -04:00
ssl	Initial pgindent and pgperltidy run for v14.	2021-05-12 13:14:10 -04:00
subscription	Add support for prepared transactions to built-in logical replication.	2021-07-14 07:33:50 +05:30
Makefile	Revert per-index collation version tracking feature.	2021-05-07 21:10:11 +12:00
README	Remove the option to build thread_test.c outside configure.	2020-10-21 12:08:48 -04:00

README

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