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/include/miscadmin.h | 5 -----
 1 file changed, 5 deletions(-)

(limited to 'src/include/miscadmin.h')

diff --git a/src/include/miscadmin.h b/src/include/miscadmin.h
index 519ef8ad684..e1adb7cd9d3 100644
--- a/src/include/miscadmin.h
+++ b/src/include/miscadmin.h
@@ -203,11 +203,6 @@ extern PGDLLIMPORT char pkglib_path[];
 extern PGDLLIMPORT char postgres_exec_path[];
 #endif
 
-/*
- * done in storage/backendid.h for now.
- *
- * extern BackendId    MyBackendId;
- */
 extern PGDLLIMPORT Oid MyDatabaseId;
 
 extern PGDLLIMPORT Oid MyDatabaseTableSpace;
-- 
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