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Adjust index locking rules as per my proposal of earlier today. You

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now are supposed to take some kind of lock on an index whenever you
are going to access the index contents, rather than relying only on a
lock on the parent table.
This commit is contained in:
Tom Lane
2004-09-30 23:21:26 +00:00
parent d674884306
commit d2af5f8a3e
7 changed files with 74 additions and 46 deletions
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8
src/backend/commands/analyze.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/analyze.c,v 1.76 2004/08/29 05:06:41 momjian Exp $
* $PostgreSQL: pgsql/src/backend/commands/analyze.c,v 1.77 2004/09/30 23:21:19 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -243,7 +243,7 @@ analyze_rel(Oid relid, VacuumStmt *vacstmt)
* if there was an explicit column list in the ANALYZE command,
* however.
*/
vac_open_indexes(onerel, &nindexes, &Irel);
vac_open_indexes(onerel, AccessShareLock, &nindexes, &Irel);
hasindex = (nindexes > 0);
indexdata = NULL;
analyzableindex = false;
@ -310,7 +310,7 @@ analyze_rel(Oid relid, VacuumStmt *vacstmt)
*/
if (attr_cnt <= 0 && !analyzableindex)
{
vac_close_indexes(nindexes, Irel);
vac_close_indexes(nindexes, Irel, AccessShareLock);
relation_close(onerel, AccessShareLock);
return;
}
@ -427,7 +427,7 @@ analyze_rel(Oid relid, VacuumStmt *vacstmt)
}
/* Done with indexes */
vac_close_indexes(nindexes, Irel);
vac_close_indexes(nindexes, Irel, NoLock);
/*
* Close source relation now, but keep lock so that no one deletes it