From 9286ef8e914c69fbf6087d6339215fd10836e25a Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Fri, 7 Dec 2018 11:02:39 -0500 Subject: [PATCH] Clean up sloppy coding in publicationcmds.c's OpenTableList(). Remove dead code (which would be incorrect if it weren't dead), per report from Pan Bian. Add a CHECK_FOR_INTERRUPTS in the inner loop over child relations, because there's little point in having one in the outer loop if there's not one here too. Minor stylistic adjustments and comment improvements. Seems to be aboriginal to this code (cf commit 665d1fad9). Back-patch to v10 where that came in, not because any of this is significant, but just to keep the branches looking similar. Discussion: https://postgr.es/m/15539-06d00ef6b1e2e1bb@postgresql.org --- src/backend/commands/publicationcmds.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/src/backend/commands/publicationcmds.c b/src/backend/commands/publicationcmds.c index b85c3d7c61..0b8798e931 100644 --- a/src/backend/commands/publicationcmds.c +++ b/src/backend/commands/publicationcmds.c @@ -494,7 +494,7 @@ RemovePublicationRelById(Oid proid) } /* - * Open relations based on provided by RangeVar list. + * Open relations specified by a RangeVar list. * The returned tables are locked in ShareUpdateExclusiveLock mode. */ static List * @@ -509,11 +509,12 @@ OpenTableList(List *tables) */ foreach(lc, tables) { - RangeVar *rv = lfirst(lc); - Relation rel; + RangeVar *rv = castNode(RangeVar, lfirst(lc)); bool recurse = rv->inh; + Relation rel; Oid myrelid; + /* Allow query cancel in case this takes a long time */ CHECK_FOR_INTERRUPTS(); rel = heap_openrv(rv, ShareUpdateExclusiveLock); @@ -531,13 +532,15 @@ OpenTableList(List *tables) heap_close(rel, ShareUpdateExclusiveLock); continue; } + rels = lappend(rels, rel); relids = lappend_oid(relids, myrelid); + /* Add children of this rel, if requested */ if (recurse) { - ListCell *child; List *children; + ListCell *child; children = find_all_inheritors(myrelid, ShareUpdateExclusiveLock, NULL); @@ -546,18 +549,15 @@ OpenTableList(List *tables) { Oid childrelid = lfirst_oid(child); - if (list_member_oid(relids, childrelid)) - continue; + /* Allow query cancel in case this takes a long time */ + CHECK_FOR_INTERRUPTS(); /* * Skip duplicates if user specified both parent and child * tables. */ if (list_member_oid(relids, childrelid)) - { - heap_close(rel, ShareUpdateExclusiveLock); continue; - } /* find_all_inheritors already got lock */ rel = heap_open(childrelid, NoLock);