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lmgr.c:DescribeLockTag was never taught about virtual xids, per Greg Stark.

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Also a couple of minor tweaks to try to future-proof the code a bit better
against future locktag additions.
This commit is contained in:
Tom Lane 2008-01-08 23:18:51 +00:00
parent bbd3bdba3e
commit da3df47c84
3 changed files with 17 additions and 8 deletions
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15
src/backend/storage/lmgr/lmgr.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/lmgr/lmgr.c,v 1.95 2008/01/01 19:45:52 momjian Exp $
* $PostgreSQL: pgsql/src/backend/storage/lmgr/lmgr.c,v 1.96 2008/01/08 23:18:50 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -672,7 +672,7 @@ UnlockSharedObject(Oid classid, Oid objid, uint16 objsubid,
bool
LockTagIsTemp(const LOCKTAG *tag)
{
switch (tag->locktag_type)
switch ((LockTagType) tag->locktag_type)
{
case LOCKTAG_RELATION:
case LOCKTAG_RELATION_EXTEND:
@ -686,6 +686,7 @@ LockTagIsTemp(const LOCKTAG *tag)
return true;
break;
case LOCKTAG_TRANSACTION:
case LOCKTAG_VIRTUALTRANSACTION:
/* there are no temp transactions */
break;
case LOCKTAG_OBJECT:
@ -710,7 +711,7 @@ LockTagIsTemp(const LOCKTAG *tag)
void
DescribeLockTag(StringInfo buf, const LOCKTAG *tag)
{
switch (tag->locktag_type)
switch ((LockTagType) tag->locktag_type)
{
case LOCKTAG_RELATION:
appendStringInfo(buf,
@ -744,6 +745,12 @@ DescribeLockTag(StringInfo buf, const LOCKTAG *tag)
_("transaction %u"),
tag->locktag_field1);
break;
case LOCKTAG_VIRTUALTRANSACTION:
appendStringInfo(buf,
_("virtual transaction %d/%u"),
tag->locktag_field1,
tag->locktag_field2);
break;
case LOCKTAG_OBJECT:
appendStringInfo(buf,
_("object %u of class %u of database %u"),
@ -770,7 +777,7 @@ DescribeLockTag(StringInfo buf, const LOCKTAG *tag)
default:
appendStringInfo(buf,
_("unrecognized locktag type %d"),
tag->locktag_type);
(int) tag->locktag_type);
break;
}
}

6
src/backend/utils/adt/lockfuncs.c
View File

@ -6,7 +6,7 @@
* Copyright (c) 2002-2008, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/lockfuncs.c,v 1.31 2008/01/01 19:45:52 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/lockfuncs.c,v 1.32 2008/01/08 23:18:51 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -206,7 +206,7 @@ pg_lock_status(PG_FUNCTION_ARGS)
MemSet(values, 0, sizeof(values));
MemSet(nulls, ' ', sizeof(nulls));
if (lock->tag.locktag_type <= LOCKTAG_ADVISORY)
if (lock->tag.locktag_type <= LOCKTAG_LAST_TYPE)
locktypename = LockTagTypeNames[lock->tag.locktag_type];
else
{
@ -217,7 +217,7 @@ pg_lock_status(PG_FUNCTION_ARGS)
values[0] = DirectFunctionCall1(textin,
CStringGetDatum(locktypename));
switch (lock->tag.locktag_type)
switch ((LockTagType) lock->tag.locktag_type)
{
case LOCKTAG_RELATION:
case LOCKTAG_RELATION_EXTEND:

4
src/include/storage/lock.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/storage/lock.h,v 1.111 2008/01/01 19:45:59 momjian Exp $
* $PostgreSQL: pgsql/src/include/storage/lock.h,v 1.112 2008/01/08 23:18:51 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -186,6 +186,8 @@ typedef enum LockTagType
LOCKTAG_ADVISORY /* advisory user locks */
} LockTagType;
#define LOCKTAG_LAST_TYPE LOCKTAG_ADVISORY
/*
* The LOCKTAG struct is defined with malice aforethought to fit into 16
* bytes with no padding. Note that this would need adjustment if we were