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Clarify what is protected by WaitLSNLock

author Alexander Korotkov <akorotkov@postgresql.org>

Sat, 6 Apr 2024 21:32:35 +0000 (00:32 +0300)

committer Alexander Korotkov <akorotkov@postgresql.org>

Sat, 6 Apr 2024 21:49:53 +0000 (00:49 +0300)

commit ee79928441e7e291532b833455ebfee27d7cab5c

tree bc8115da4fbef2a910f5f45531b21c9095b716bb tree

parent 25f42429e2ff2acca35c9154fc2e36b75c79227a commit | diff

Clarify what is protected by WaitLSNLock

Not just WaitLSNState.waitersHeap, but also WaitLSNState.procInfos and
updating of WaitLSNState.minWaitedLSN is protected by WaitLSNLock. There
is one now documented exclusion on fast-path checking of
WaitLSNProcInfo.inHeap flag.

Discussion: https://postgr.es/m/202404030658.hhj3vfxeyhft%40alvherre.pgsql

src/backend/commands/waitlsn.c diff | blob | blame | history

src/include/commands/waitlsn.h diff | blob | blame | history

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