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Fix subtransaction behavior for large objects, temp namespace, files,

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password/group files.  Also allow read-only subtransactions of a read-write
parent, but not vice versa.  These are the reasonably noncontroversial
parts of Alvaro's recent mop-up patch, plus further work on large objects
to minimize use of the TopTransactionResourceOwner.
This commit is contained in:
Tom Lane
2004-07-28 14:23:31 +00:00
parent cc813fc2b8
commit 1bf3d61504
17 changed files with 572 additions and 205 deletions
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15
src/backend/utils/misc/guc.c
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@ -10,7 +10,7 @@
* Written by Peter Eisentraut <peter_e@gmx.net>.
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.224 2004/07/24 19:51:23 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.225 2004/07/28 14:23:29 tgl Exp $
*
*--------------------------------------------------------------------
*/
@ -5436,10 +5436,15 @@ assign_log_stats(bool newval, bool doit, GucSource source)
static bool
assign_transaction_read_only(bool newval, bool doit, GucSource source)
{
if (doit && source >= PGC_S_INTERACTIVE && IsSubTransaction())
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("cannot set transaction read only mode inside a subtransaction")));
/* Can't go to r/w mode inside a r/o transaction */
if (newval == false && XactReadOnly && IsSubTransaction())
{
if (source >= PGC_S_INTERACTIVE)
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("cannot set transaction read-write mode inside a read-only transaction")));
return false;
}
return true;
}