From 024c521117579a6d356050ad3d78fdc95e44eefa Mon Sep 17 00:00:00 2001 From: Heikki Linnakangas Date: Sun, 3 Mar 2024 19:38:22 +0200 Subject: Replace BackendIds with 0-based ProcNumbers Now that BackendId was just another index into the proc array, it was redundant with the 0-based proc numbers used in other places. Replace all usage of backend IDs with proc numbers. The only place where the term "backend id" remains is in a few pgstat functions that expose backend IDs at the SQL level. Those IDs are now in fact 0-based ProcNumbers too, but the documentation still calls them "backend ids". That term still seems appropriate to describe what the numbers are, so I let it be. One user-visible effect is that pg_temp_0 is now a valid temp schema name, for backend with ProcNumber 0. Reviewed-by: Andres Freund Discussion: https://www.postgresql.org/message-id/8171f1aa-496f-46a6-afc3-c46fe7a9b407@iki.fi --- src/backend/storage/buffer/localbuf.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'src/backend/storage/buffer/localbuf.c') diff --git a/src/backend/storage/buffer/localbuf.c b/src/backend/storage/buffer/localbuf.c index 1f02fed250e..f4b294476e5 100644 --- a/src/backend/storage/buffer/localbuf.c +++ b/src/backend/storage/buffer/localbuf.c @@ -242,7 +242,7 @@ GetLocalVictimBuffer(void) Page localpage = (char *) LocalBufHdrGetBlock(bufHdr); /* Find smgr relation for buffer */ - oreln = smgropen(BufTagGetRelFileLocator(&bufHdr->tag), MyBackendId); + oreln = smgropen(BufTagGetRelFileLocator(&bufHdr->tag), MyProcNumber); PageSetChecksumInplace(localpage, bufHdr->tag.blockNum); @@ -509,7 +509,7 @@ DropRelationLocalBuffers(RelFileLocator rlocator, ForkNumber forkNum, elog(ERROR, "block %u of %s is still referenced (local %u)", bufHdr->tag.blockNum, relpathbackend(BufTagGetRelFileLocator(&bufHdr->tag), - MyBackendId, + MyProcNumber, BufTagGetForkNum(&bufHdr->tag)), LocalRefCount[i]); @@ -554,7 +554,7 @@ DropRelationAllLocalBuffers(RelFileLocator rlocator) elog(ERROR, "block %u of %s is still referenced (local %u)", bufHdr->tag.blockNum, relpathbackend(BufTagGetRelFileLocator(&bufHdr->tag), - MyBackendId, + MyProcNumber, BufTagGetForkNum(&bufHdr->tag)), LocalRefCount[i]); /* Remove entry from hashtable */ -- cgit v1.2.3