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Andrew Dunstan 153e215677 Prevent port collisions between concurrent TAP tests 
Currently there is a race condition where if concurrent TAP tests both
test that they can open a port they will assume that it is free and use
it, causing one of them to fail. To prevent this we record a reservation
using an exclusive lock, and any TAP test that discovers a reservation
checks to see if the reserving process is still alive, and looks for
another free port if it is.

Ports are reserved in a directory set by the environment setting
PG_TEST_PORT_DIR, or if that doesn't exist a subdirectory of the top
build directory as set by Makefile.global, or its own
tmp_check directory.

The prove_check recipe in Makefile.global.in is extended to export
top_builddir to the TAP tests. This was already exported by the
prove_installcheck recipes.

Per complaint from Andres Freund

Backpatched from 9b4eafcaf4 to all live branches

Discussion: https://postgr.es/m/20221002164931.d57hlutrcz4d2zi7@awork3.anarazel.de
2022-11-22 10:51:13 -05:00
..
backend Ignore invalidated slots while computing oldest catalog Xmin 2022-11-22 10:56:07 +01:00
bin Translation updates 2022-11-07 19:22:54 +01:00
common Change some errdetail() to errdetail_internal() 2022-09-28 17:14:53 +02:00
fe_utils Use correct connection for cancellation in frontend's parallel slots 2022-08-27 15:22:07 +09:00
include Add comments and a missing CHECK_FOR_INTERRUPTS in ts_headline. 2022-11-21 17:07:07 -05:00
interfaces Translation updates 2022-11-07 14:04:05 +01:00
makefiles Refactor DLSUFFIX handling 2022-03-25 08:56:02 +01:00
pl Translation updates 2022-11-07 14:04:05 +01:00
port Re-allow building on Microsoft Visual Studio 2013. 2022-11-10 10:23:49 -05:00
template On NetBSD, force dynamic symbol resolution at postmaster start. 2022-08-30 17:28:55 -04:00
test Prevent port collisions between concurrent TAP tests 2022-11-22 10:51:13 -05:00
timezone Update time zone data files to tzdata release 2022f. 2022-11-01 17:08:49 -04:00
tools ci: Add hint about downloadable logs to README 2022-09-26 20:03:37 -07:00
tutorial Doc: sync src/tutorial/basics.source with SGML documentation. 2022-11-19 13:09:14 -05:00
.gitignore
DEVELOPERS
Makefile Remove the option to build thread_test.c outside configure. 2020-10-21 12:08:48 -04:00
Makefile.global.in Prevent port collisions between concurrent TAP tests 2022-11-22 10:51:13 -05:00
Makefile.shlib AIX: Fix missing libpq symbols by respecting SHLIB_EXPORTS. 2021-09-06 11:27:59 -07:00
nls-global.mk Improve frontend error logging style. 2022-04-08 14:55:14 -04:00