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Put a CHECK_FOR_INTERRUPTS call into the loops that try to find a unique new

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OID or new relfilenode.  If the existing OIDs are sufficiently densely
populated, this could take a long time (perhaps even be an infinite loop),
so it seems wise to allow the system to respond to a cancel interrupt here.
Per a gripe from Jacky Leng.

Backpatch as far as 8.1.  Older versions just fail on OID collision,
instead of looping.
This commit is contained in:
Tom Lane 2008-02-20 17:44:20 +00:00
parent f8dc95540e
commit d64f38d1a1
1 changed files with 5 additions and 1 deletions
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6
src/backend/catalog/catalog.c
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@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/catalog/catalog.c,v 1.68 2006/10/04 00:29:50 momjian Exp $
* $PostgreSQL: pgsql/src/backend/catalog/catalog.c,v 1.68.2.1 2008/02/20 17:44:20 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -368,6 +368,8 @@ GetNewOidWithIndex(Relation relation, Relation indexrel)
/* Generate new OIDs until we find one not in the table */
do
{
CHECK_FOR_INTERRUPTS();
newOid = GetNewObjectId();
ScanKeyInit(&key,
@ -417,6 +419,8 @@ GetNewRelFileNode(Oid reltablespace, bool relisshared, Relation pg_class)
do
{
CHECK_FOR_INTERRUPTS();
/* Generate the OID */
if (pg_class)
rnode.relNode = GetNewOid(pg_class);