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Fujii Masao b993706787 Fix ProcWakeup() resetting wrong waitStart field. 
Previously, when one process woke another that was waiting on a lock,
ProcWakeup() incorrectly cleared its own waitStart field (i.e.,
MyProc->waitStart) instead of that of the process being awakened.
As a result, the awakened process retained a stale lock-wait start timestamp.

This did not cause user-visible issues. pg_locks.waitstart was reported as
NULL for the awakened process (i.e., when pg_locks.granted is true),
regardless of the waitStart value.

This bug was introduced by commit 46d6e5f567.

This commit fixes this by resetting the waitStart field of the process
being awakened in ProcWakeup().

Backpatch to all supported branches.

Reported-by: Chao Li <li.evan.chao@gmail.com>
Author: Chao Li <li.evan.chao@gmail.com>
Reviewed-by: ji xu <thanksgreed@gmail.com>
Reviewed-by: Álvaro Herrera <alvherre@kurilemu.de>
Discussion: https://postgr.es/m/537BD852-EC61-4D25-AB55-BE8BE46D07D7@gmail.com
Backpatch-through: 14
2026-02-26 08:50:56 +09:00
..
backend Fix ProcWakeup() resetting wrong waitStart field. 2026-02-26 08:50:56 +09:00
bin Fix some cases of indirectly casting away const. 2026-02-25 11:19:50 -05:00
common Fix some cases of indirectly casting away const. 2026-02-25 11:19:50 -05:00
fe_utils In fmtIdEnc(), handle failure of enlargePQExpBuffer(). 2025-02-16 12:46:35 -05:00
include Allow PG_PRINTF_ATTRIBUTE to be different in C and C++ code. 2026-02-25 11:57:26 -05:00
interfaces Fix some cases of indirectly casting away const. 2026-02-25 11:19:50 -05:00
makefiles Use --strip-unneeded when stripping static libraries with GNU strip. 2023-04-20 18:12:32 -04:00
pl Translation updates 2026-02-23 14:02:22 +01:00
port Fix some cases of indirectly casting away const. 2026-02-25 11:19:50 -05:00
template Use unnamed POSIX semaphores on Cygwin. 2023-01-06 10:33:28 +13:00
test Fix some cases of indirectly casting away const. 2026-02-25 11:19:50 -05:00
timezone Fix some cases of indirectly casting away const. 2026-02-25 11:19:50 -05:00
tools Harden _int_matchsel() against being attached to the wrong operator. 2026-02-09 10:14:22 -05:00
tutorial Pre-beta mechanical code beautification. 2023-05-19 17:24:48 -04:00
.gitignore
DEVELOPERS
Makefile Integrate pg_bsd_indent into our build/test infrastructure. 2023-02-12 12:22:21 -05:00
Makefile.global.in Don't put library-supplied -L/-I switches before user-supplied ones. 2025-07-29 15:17:41 -04:00
Makefile.shlib Stop using "-multiply_defined suppress" on macOS. 2023-09-26 21:06:21 -04:00
meson.build Integrate pg_bsd_indent into our build/test infrastructure. 2023-02-12 12:22:21 -05:00
nls-global.mk Fix update-po for the PGXS case 2025-10-16 20:21:05 +02:00