diff --git a/src/backend/commands/typecmds.c b/src/backend/commands/typecmds.c index ad95460537..7ae852672c 100644 --- a/src/backend/commands/typecmds.c +++ b/src/backend/commands/typecmds.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/commands/typecmds.c,v 1.30 2003/02/03 21:15:43 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/commands/typecmds.c,v 1.31 2003/02/19 04:02:53 momjian Exp $ * * DESCRIPTION * The "DefineFoo" routines take the parse tree and pick out the @@ -353,6 +353,12 @@ RemoveType(List *names, DropBehavior behavior) elog(ERROR, "Type \"%s\" does not exist", TypeNameToString(typename)); + /* + * Grab an exclusive lock on the type id, the SearchSysCache confirms + * the type still exists after locking + */ + LockObject(typeoid, RelOid_pg_type, AccessExclusiveLock); + tup = SearchSysCache(TYPEOID, ObjectIdGetDatum(typeoid), 0, 0, 0); @@ -376,6 +382,9 @@ RemoveType(List *names, DropBehavior behavior) object.objectSubId = 0; performDeletion(&object, behavior); + + /* Hold the lock until the end of the transaction */ + UnlockObject(typeoid, RelOid_pg_type, NoLock); } @@ -680,7 +689,7 @@ void RemoveDomain(List *names, DropBehavior behavior) { TypeName *typename; - Oid typeoid; + Oid domainoid; HeapTuple tup; char typtype; ObjectAddress object; @@ -692,20 +701,26 @@ RemoveDomain(List *names, DropBehavior behavior) typename->arrayBounds = NIL; /* Use LookupTypeName here so that shell types can be removed. */ - typeoid = LookupTypeName(typename); - if (!OidIsValid(typeoid)) + domainoid = LookupTypeName(typename); + if (!OidIsValid(domainoid)) elog(ERROR, "Type \"%s\" does not exist", TypeNameToString(typename)); + /* + * Lock the domain. The SearchSysCache confirms the domain still exists + * after locking + */ + LockObject(domainoid, RelOid_pg_type, AccessExclusiveLock); + tup = SearchSysCache(TYPEOID, - ObjectIdGetDatum(typeoid), + ObjectIdGetDatum(domainoid), 0, 0, 0); if (!HeapTupleIsValid(tup)) elog(ERROR, "RemoveDomain: type \"%s\" does not exist", TypeNameToString(typename)); /* Permission check: must own type or its namespace */ - if (!pg_type_ownercheck(typeoid, GetUserId()) && + if (!pg_type_ownercheck(domainoid, GetUserId()) && !pg_namespace_ownercheck(((Form_pg_type) GETSTRUCT(tup))->typnamespace, GetUserId())) aclcheck_error(ACLCHECK_NOT_OWNER, TypeNameToString(typename)); @@ -723,10 +738,13 @@ RemoveDomain(List *names, DropBehavior behavior) * Do the deletion */ object.classId = RelOid_pg_type; - object.objectId = typeoid; + object.objectId = domainoid; object.objectSubId = 0; performDeletion(&object, behavior); + + /* Hold the lock until the end of the transaction */ + UnlockObject(domainoid, RelOid_pg_type, NoLock); } @@ -941,6 +959,12 @@ AlterDomainDefault(List *names, Node *defaultRaw) elog(ERROR, "Type \"%s\" does not exist", TypeNameToString(typename)); + /* + * Lock the domain. The SearchSysCacheCopy confirms the type + * still exists after locking + */ + LockObject(domainoid, RelOid_pg_type, AccessExclusiveLock); + tup = SearchSysCacheCopy(TYPEOID, ObjectIdGetDatum(domainoid), 0, 0, 0); @@ -1025,6 +1049,7 @@ AlterDomainDefault(List *names, Node *defaultRaw) /* Clean up */ heap_close(rel, NoLock); heap_freetuple(newtuple); + UnlockObject(domainoid, RelOid_pg_type, NoLock); }; /* @@ -1056,6 +1081,12 @@ AlterDomainNotNull(List *names, bool notNull) elog(ERROR, "Type \"%s\" does not exist", TypeNameToString(typename)); + /* + * Lock the domain. The SearchSysCacheCopy confirms the domain + * still exists after locking + */ + LockObject(domainoid, RelOid_pg_type, AccessExclusiveLock); + tup = SearchSysCacheCopy(TYPEOID, ObjectIdGetDatum(domainoid), 0, 0, 0); @@ -1137,6 +1168,7 @@ AlterDomainNotNull(List *names, bool notNull) /* Clean up */ heap_freetuple(tup); heap_close(typrel, RowExclusiveLock); + UnlockObject(domainoid, RelOid_pg_type, NoLock); } /* @@ -1172,6 +1204,12 @@ AlterDomainDropConstraint(List *names, const char *constrName, DropBehavior beha elog(ERROR, "Type \"%s\" does not exist", TypeNameToString(typename)); + /* + * Lock the domain. The SearchSysCacheCopy confirms the type still + * exists after locking. + */ + LockObject(domainoid, RelOid_pg_type, AccessExclusiveLock); + tup = SearchSysCacheCopy(TYPEOID, ObjectIdGetDatum(domainoid), 0, 0, 0); @@ -1219,6 +1257,7 @@ AlterDomainDropConstraint(List *names, const char *constrName, DropBehavior beha heap_close(conrel, RowExclusiveLock); heap_close(rel, NoLock); + UnlockObject(domainoid, RelOid_pg_type, NoLock); }; /* @@ -1259,6 +1298,12 @@ AlterDomainAddConstraint(List *names, Node *newConstraint) elog(ERROR, "Type \"%s\" does not exist", TypeNameToString(typename)); + /* + * Lock the domain. The SearchSysCacheCopy confirms the domain + * still exists after locking. + */ + LockObject(domainoid, RelOid_pg_type, AccessExclusiveLock); + tup = SearchSysCacheCopy(TYPEOID, ObjectIdGetDatum(domainoid), 0, 0, 0); @@ -1393,6 +1438,7 @@ AlterDomainAddConstraint(List *names, Node *newConstraint) /* Clean up */ heap_close(typrel, RowExclusiveLock); + UnlockObject(domainoid, RelOid_pg_type, NoLock); } /* @@ -1696,7 +1742,10 @@ GetDomainConstraints(Oid typeOid) Form_pg_type typTup; ScanKeyData key[1]; SysScanDesc scan; - + + /* Lock the domain */ + LockObject(typeOid, RelOid_pg_type, AccessShareLock); + tup = SearchSysCache(TYPEOID, ObjectIdGetDatum(typeOid), 0, 0, 0); @@ -1824,6 +1873,12 @@ AlterTypeOwner(List *names, AclId newOwnerSysId) elog(ERROR, "Type \"%s\" does not exist", TypeNameToString(typename)); + /* + * Lock the type. The SearchSysCacheCopy serves to confirm the + * domain still exists after locking + */ + LockObject(typeOid, RelOid_pg_type, AccessExclusiveLock); + tup = SearchSysCacheCopy(TYPEOID, ObjectIdGetDatum(typeOid), 0, 0, 0); @@ -1846,4 +1901,5 @@ AlterTypeOwner(List *names, AclId newOwnerSysId) /* Clean up */ heap_close(rel, RowExclusiveLock); + UnlockObject(typeOid, RelOid_pg_type, NoLock); } diff --git a/src/backend/parser/parse_type.c b/src/backend/parser/parse_type.c index 8f7c34cbd3..56379a2811 100644 --- a/src/backend/parser/parse_type.c +++ b/src/backend/parser/parse_type.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/parser/parse_type.c,v 1.51 2003/02/09 06:56:28 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/parser/parse_type.c,v 1.52 2003/02/19 04:02:53 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -23,6 +23,7 @@ #include "parser/parser.h" #include "parser/parse_expr.h" #include "parser/parse_type.h" +#include "storage/lmgr.h" #include "utils/builtins.h" #include "utils/lsyscache.h" #include "utils/syscache.h" @@ -127,6 +128,15 @@ LookupTypeName(const TypeName *typename) } } + /* + * Lock the type as having been read for remainder of the transaction + * + * XXX: There is a small time between the above and now when the type + * could dissapear. We *should* recheck to confirm the type still + * exists, but won't for speed. + */ + LockObject(restype, RelOid_pg_type, AccessShareLock); + return restype; } diff --git a/src/backend/storage/lmgr/deadlock.c b/src/backend/storage/lmgr/deadlock.c index 61ab1962fb..9191d40b1e 100644 --- a/src/backend/storage/lmgr/deadlock.c +++ b/src/backend/storage/lmgr/deadlock.c @@ -12,7 +12,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/storage/lmgr/deadlock.c,v 1.17 2003/02/18 02:13:24 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/storage/lmgr/deadlock.c,v 1.18 2003/02/19 04:02:53 momjian Exp $ * * Interface: * @@ -855,22 +855,25 @@ DeadLockReport(void) else nextpid = deadlockDetails[0].pid; - if (info->locktag.relId == XactLockTableId && info->locktag.dbId == 0) + if (info->locktag.objId == InvalidOid + && info->locktag.classId == XactLockTableId + && info->locktag.dbId == InvalidOid) { /* Lock is for transaction ID */ elog(NOTICE, "Proc %d waits for %s on transaction %u; blocked by %d", info->pid, GetLockmodeName(info->lockmode), - info->locktag.objId.xid, + info->locktag.objsubId.xid, nextpid); } else { /* Lock is for a relation */ - elog(NOTICE, "Proc %d waits for %s on relation %u database %u; blocked by %d", + elog(NOTICE, "Proc %d waits for %s on object %u class %u database %u; blocked by %d", info->pid, GetLockmodeName(info->lockmode), - info->locktag.relId, + info->locktag.objId, + info->locktag.classId, info->locktag.dbId, nextpid); } diff --git a/src/backend/storage/lmgr/lmgr.c b/src/backend/storage/lmgr/lmgr.c index a4e9197edc..a1011054fa 100644 --- a/src/backend/storage/lmgr/lmgr.c +++ b/src/backend/storage/lmgr/lmgr.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/storage/lmgr/lmgr.c,v 1.54 2002/08/01 05:18:33 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/storage/lmgr/lmgr.c,v 1.55 2003/02/19 04:02:53 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -126,9 +126,10 @@ LockRelation(Relation relation, LOCKMODE lockmode) LOCKTAG tag; MemSet(&tag, 0, sizeof(tag)); - tag.relId = relation->rd_lockInfo.lockRelId.relId; + tag.objId = relation->rd_lockInfo.lockRelId.relId; + tag.classId = RelOid_pg_class; tag.dbId = relation->rd_lockInfo.lockRelId.dbId; - tag.objId.blkno = InvalidBlockNumber; + tag.objsubId.blkno = InvalidBlockNumber; if (!LockAcquire(LockTableId, &tag, GetCurrentTransactionId(), lockmode, false)) @@ -160,9 +161,10 @@ ConditionalLockRelation(Relation relation, LOCKMODE lockmode) LOCKTAG tag; MemSet(&tag, 0, sizeof(tag)); - tag.relId = relation->rd_lockInfo.lockRelId.relId; + tag.objId = relation->rd_lockInfo.lockRelId.relId; + tag.classId = RelOid_pg_class; tag.dbId = relation->rd_lockInfo.lockRelId.dbId; - tag.objId.blkno = InvalidBlockNumber; + tag.objsubId.blkno = InvalidBlockNumber; if (!LockAcquire(LockTableId, &tag, GetCurrentTransactionId(), lockmode, true)) @@ -190,9 +192,10 @@ UnlockRelation(Relation relation, LOCKMODE lockmode) LOCKTAG tag; MemSet(&tag, 0, sizeof(tag)); - tag.relId = relation->rd_lockInfo.lockRelId.relId; + tag.objId = relation->rd_lockInfo.lockRelId.relId; + tag.classId = RelOid_pg_class; tag.dbId = relation->rd_lockInfo.lockRelId.dbId; - tag.objId.blkno = InvalidBlockNumber; + tag.objsubId.blkno = InvalidBlockNumber; LockRelease(LockTableId, &tag, GetCurrentTransactionId(), lockmode); } @@ -215,9 +218,10 @@ LockRelationForSession(LockRelId *relid, LOCKMODE lockmode) LOCKTAG tag; MemSet(&tag, 0, sizeof(tag)); - tag.relId = relid->relId; + tag.objId = relid->relId; + tag.classId = RelOid_pg_class; tag.dbId = relid->dbId; - tag.objId.blkno = InvalidBlockNumber; + tag.objsubId.blkno = InvalidBlockNumber; if (!LockAcquire(LockTableId, &tag, InvalidTransactionId, lockmode, false)) @@ -233,9 +237,10 @@ UnlockRelationForSession(LockRelId *relid, LOCKMODE lockmode) LOCKTAG tag; MemSet(&tag, 0, sizeof(tag)); - tag.relId = relid->relId; + tag.objId = relid->relId; + tag.classId = RelOid_pg_class; tag.dbId = relid->dbId; - tag.objId.blkno = InvalidBlockNumber; + tag.objsubId.blkno = InvalidBlockNumber; LockRelease(LockTableId, &tag, InvalidTransactionId, lockmode); } @@ -253,9 +258,10 @@ LockPage(Relation relation, BlockNumber blkno, LOCKMODE lockmode) LOCKTAG tag; MemSet(&tag, 0, sizeof(tag)); - tag.relId = relation->rd_lockInfo.lockRelId.relId; + tag.objId = relation->rd_lockInfo.lockRelId.relId; + tag.classId = RelOid_pg_class; tag.dbId = relation->rd_lockInfo.lockRelId.dbId; - tag.objId.blkno = blkno; + tag.objsubId.blkno = blkno; if (!LockAcquire(LockTableId, &tag, GetCurrentTransactionId(), lockmode, false)) @@ -271,9 +277,10 @@ UnlockPage(Relation relation, BlockNumber blkno, LOCKMODE lockmode) LOCKTAG tag; MemSet(&tag, 0, sizeof(tag)); - tag.relId = relation->rd_lockInfo.lockRelId.relId; + tag.objId = relation->rd_lockInfo.lockRelId.relId; + tag.classId = RelOid_pg_class; tag.dbId = relation->rd_lockInfo.lockRelId.dbId; - tag.objId.blkno = blkno; + tag.objsubId.blkno = blkno; LockRelease(LockTableId, &tag, GetCurrentTransactionId(), lockmode); } @@ -294,9 +301,10 @@ XactLockTableInsert(TransactionId xid) LOCKTAG tag; MemSet(&tag, 0, sizeof(tag)); - tag.relId = XactLockTableId; + tag.objId = InvalidOid; + tag.classId = XactLockTableId; tag.dbId = InvalidOid; /* xids are globally unique */ - tag.objId.xid = xid; + tag.objsubId.xid = xid; if (!LockAcquire(LockTableId, &tag, xid, ExclusiveLock, false)) @@ -317,9 +325,10 @@ XactLockTableWait(TransactionId xid) Assert(!TransactionIdEquals(xid, myxid)); MemSet(&tag, 0, sizeof(tag)); - tag.relId = XactLockTableId; + tag.objId = InvalidOid; + tag.classId = XactLockTableId; tag.dbId = InvalidOid; - tag.objId.xid = xid; + tag.objsubId.xid = xid; if (!LockAcquire(LockTableId, &tag, myxid, ShareLock, false)) @@ -334,3 +343,59 @@ XactLockTableWait(TransactionId xid) if (!TransactionIdDidCommit(xid) && !TransactionIdDidAbort(xid)) TransactionIdAbort(xid); } + +/* + * LockObject + * + * Lock an arbitrary database object. A standard relation lock would lock the + * classId of RelOid_pg_class and objId of the relations OID within the pg_class + * table. LockObject allows classId to be specified by the caller, thus allowing + * locks on any row in any system table. + * + * If classId is NOT a system table (protected from removal), an additional lock + * should be held on the relation to prevent it from being dropped. + */ +void +LockObject(Oid objId, Oid classId, LOCKMODE lockmode) +{ + LOCKTAG tag; + + MemSet(&tag, 0, sizeof(tag)); + tag.objId = objId; + tag.classId = classId; + tag.dbId = MyDatabaseId; + tag.objsubId.blkno = InvalidBlockNumber; + + /* Only two reasonable lock types */ + Assert(lockmode == AccessShareLock || lockmode == AccessExclusiveLock); + + if (!LockAcquire(LockTableId, &tag, GetCurrentTransactionId(), + lockmode, false)) + elog(ERROR, "LockObject: LockAcquire failed"); +} + +/* + * UnlockObject + */ +void +UnlockObject(Oid objId, Oid classId, LOCKMODE lockmode) +{ + LOCKTAG tag; + + /* NoLock is a no-op */ + if (lockmode == NoLock) + return; + + MemSet(&tag, 0, sizeof(tag)); + tag.objId = objId; + tag.classId = classId; + tag.dbId = MyDatabaseId; + tag.objsubId.blkno = InvalidBlockNumber; + + /* Only two reasonable lock types */ + Assert(lockmode == AccessShareLock + || lockmode == AccessExclusiveLock); + + LockRelease(LockTableId, &tag, GetCurrentTransactionId(), lockmode); +} + diff --git a/src/backend/storage/lmgr/lock.c b/src/backend/storage/lmgr/lock.c index d0c5a055f9..959fe7877a 100644 --- a/src/backend/storage/lmgr/lock.c +++ b/src/backend/storage/lmgr/lock.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/storage/lmgr/lock.c,v 1.120 2003/02/18 02:13:24 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/storage/lmgr/lock.c,v 1.121 2003/02/19 04:02:53 momjian Exp $ * * NOTES * Outside modules can create a lock table and acquire/release @@ -97,8 +97,8 @@ LOCK_DEBUG_ENABLED(const LOCK *lock) return (((LOCK_LOCKMETHOD(*lock) == DEFAULT_LOCKMETHOD && Trace_locks) || (LOCK_LOCKMETHOD(*lock) == USER_LOCKMETHOD && Trace_userlocks)) - && (lock->tag.relId >= (Oid) Trace_lock_oidmin)) - || (Trace_lock_table && (lock->tag.relId == Trace_lock_table)); + && (lock->tag.objId >= (Oid) Trace_lock_oidmin)) + || (Trace_lock_table && (lock->tag.objId == Trace_lock_table)); } @@ -107,12 +107,12 @@ LOCK_PRINT(const char *where, const LOCK *lock, LOCKMODE type) { if (LOCK_DEBUG_ENABLED(lock)) elog(LOG, - "%s: lock(%lx) tbl(%d) rel(%u) db(%u) obj(%u) grantMask(%x) " + "%s: lock(%lx) tbl(%d) obj(%u) class(%u) db(%u) objsub(%u) grantMask(%x) " "req(%d,%d,%d,%d,%d,%d,%d)=%d " "grant(%d,%d,%d,%d,%d,%d,%d)=%d wait(%d) type(%s)", where, MAKE_OFFSET(lock), - lock->tag.lockmethod, lock->tag.relId, lock->tag.dbId, - lock->tag.objId.blkno, lock->grantMask, + lock->tag.lockmethod, lock->tag.objId, lock->tag.classId, lock->tag.dbId, + lock->tag.objsubId.blkno, lock->grantMask, lock->requested[1], lock->requested[2], lock->requested[3], lock->requested[4], lock->requested[5], lock->requested[6], lock->requested[7], lock->nRequested, @@ -129,16 +129,16 @@ PROCLOCK_PRINT(const char *where, const PROCLOCK *proclockP) if ( (((PROCLOCK_LOCKMETHOD(*proclockP) == DEFAULT_LOCKMETHOD && Trace_locks) || (PROCLOCK_LOCKMETHOD(*proclockP) == USER_LOCKMETHOD && Trace_userlocks)) - && (((LOCK *) MAKE_PTR(proclockP->tag.lock))->tag.relId >= (Oid) Trace_lock_oidmin)) - || (Trace_lock_table && (((LOCK *) MAKE_PTR(proclockP->tag.lock))->tag.relId == Trace_lock_table)) + && (((LOCK *) MAKE_PTR(proclockP->tag.lock))->tag.objId >= (Oid) Trace_lock_oidmin)) + || (Trace_lock_table && (((LOCK *) MAKE_PTR(proclockP->tag.lock))->tag.objId == Trace_lock_table)) ) elog(LOG, "%s: proclock(%lx) lock(%lx) tbl(%d) proc(%lx) xid(%u) hold(%d,%d,%d,%d,%d,%d,%d)=%d", where, MAKE_OFFSET(proclockP), proclockP->tag.lock, PROCLOCK_LOCKMETHOD(*(proclockP)), proclockP->tag.proc, proclockP->tag.xid, - proclockP->holding[1], proclockP->holding[2], proclockP->holding[3], - proclockP->holding[4], proclockP->holding[5], proclockP->holding[6], + proclockP->holding[1], proclockP->holding[2], proclockP->holding[3], + proclockP->holding[4], proclockP->holding[5], proclockP->holding[6], proclockP->holding[7], proclockP->nHolding); } @@ -417,8 +417,9 @@ LockMethodTableRename(LOCKMETHOD lockmethod) * * lockmethod 1 2 * tag.dbId database oid database oid - * tag.relId rel oid or 0 0 - * tag.objId block id lock id2 + * tag.classId class oid 0 + * tag.objId rel oid or 0 0 + * tag.objsubId block id lock id2 * or xact id * tag.offnum 0 lock id1 * proclock.xid xid or 0 0 @@ -449,7 +450,7 @@ LockAcquire(LOCKMETHOD lockmethod, LOCKTAG *locktag, #ifdef LOCK_DEBUG if (lockmethod == USER_LOCKMETHOD && Trace_userlocks) elog(LOG, "LockAcquire: user lock [%u] %s", - locktag->objId.blkno, lock_mode_names[lockmode]); + locktag->objsubId.blkno, lock_mode_names[lockmode]); #endif /* ???????? This must be changed when short term locks will be used */ @@ -572,7 +573,7 @@ LockAcquire(LOCKMETHOD lockmethod, LOCKTAG *locktag, elog(LOG, "Deadlock risk: raising lock level" " from %s to %s on object %u/%u/%u", lock_mode_names[i], lock_mode_names[lockmode], - lock->tag.relId, lock->tag.dbId, lock->tag.objId.blkno); + lock->tag.objId, lock->tag.dbId, lock->tag.objsubId.blkno); break; } } @@ -993,7 +994,7 @@ LockRelease(LOCKMETHOD lockmethod, LOCKTAG *locktag, #ifdef LOCK_DEBUG if (lockmethod == USER_LOCKMETHOD && Trace_userlocks) - elog(LOG, "LockRelease: user lock tag [%u] %d", locktag->objId.blkno, lockmode); + elog(LOG, "LockRelease: user lock tag [%u] %d", locktag->objsubId.blkno, lockmode); #endif /* ???????? This must be changed when short term locks will be used */ diff --git a/src/backend/utils/adt/lockfuncs.c b/src/backend/utils/adt/lockfuncs.c index 37788d8ff0..25bc726cba 100644 --- a/src/backend/utils/adt/lockfuncs.c +++ b/src/backend/utils/adt/lockfuncs.c @@ -6,7 +6,7 @@ * Copyright (c) 2002, PostgreSQL Global Development Group * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/adt/lockfuncs.c,v 1.8 2003/02/18 02:13:24 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/adt/lockfuncs.c,v 1.9 2003/02/19 04:02:54 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -53,18 +53,20 @@ pg_lock_status(PG_FUNCTION_ARGS) /* build tupdesc for result tuples */ /* this had better match pg_locks view in initdb.sh */ - tupdesc = CreateTemplateTupleDesc(6, false); - TupleDescInitEntry(tupdesc, (AttrNumber) 1, "relation", + tupdesc = CreateTemplateTupleDesc(7, false); + TupleDescInitEntry(tupdesc, (AttrNumber) 1, "object", OIDOID, -1, 0, false); - TupleDescInitEntry(tupdesc, (AttrNumber) 2, "database", + TupleDescInitEntry(tupdesc, (AttrNumber) 2, "class", OIDOID, -1, 0, false); - TupleDescInitEntry(tupdesc, (AttrNumber) 3, "transaction", + TupleDescInitEntry(tupdesc, (AttrNumber) 3, "database", + OIDOID, -1, 0, false); + TupleDescInitEntry(tupdesc, (AttrNumber) 4, "transaction", XIDOID, -1, 0, false); - TupleDescInitEntry(tupdesc, (AttrNumber) 4, "pid", + TupleDescInitEntry(tupdesc, (AttrNumber) 5, "pid", INT4OID, -1, 0, false); - TupleDescInitEntry(tupdesc, (AttrNumber) 5, "mode", + TupleDescInitEntry(tupdesc, (AttrNumber) 6, "mode", TEXTOID, -1, 0, false); - TupleDescInitEntry(tupdesc, (AttrNumber) 6, "granted", + TupleDescInitEntry(tupdesc, (AttrNumber) 7, "granted", BOOLOID, -1, 0, false); funcctx->slot = TupleDescGetSlot(tupdesc); @@ -93,8 +95,8 @@ pg_lock_status(PG_FUNCTION_ARGS) PGPROC *proc; bool granted; LOCKMODE mode; - Datum values[6]; - char nulls[6]; + Datum values[7]; + char nulls[7]; HeapTuple tuple; Datum result; @@ -152,26 +154,30 @@ pg_lock_status(PG_FUNCTION_ARGS) MemSet(values, 0, sizeof(values)); MemSet(nulls, ' ', sizeof(nulls)); - if (lock->tag.relId == XactLockTableId && lock->tag.dbId == 0) + if (lock->tag.objId == InvalidOid + && lock->tag.classId == XactLockTableId + && lock->tag.dbId == InvalidOid) { /* Lock is for transaction ID */ nulls[0] = 'n'; nulls[1] = 'n'; - values[2] = TransactionIdGetDatum(lock->tag.objId.xid); + nulls[2] = 'n'; + values[3] = TransactionIdGetDatum(lock->tag.objsubId.xid); } else { /* Lock is for a relation */ - values[0] = ObjectIdGetDatum(lock->tag.relId); - values[1] = ObjectIdGetDatum(lock->tag.dbId); - nulls[2] = 'n'; + values[0] = ObjectIdGetDatum(lock->tag.objId); + values[1] = ObjectIdGetDatum(lock->tag.classId); + values[2] = ObjectIdGetDatum(lock->tag.dbId); + nulls[3] = 'n'; } - values[3] = Int32GetDatum(proc->pid); - values[4] = DirectFunctionCall1(textin, + values[4] = Int32GetDatum(proc->pid); + values[5] = DirectFunctionCall1(textin, CStringGetDatum(GetLockmodeName(mode))); - values[5] = BoolGetDatum(granted); + values[6] = BoolGetDatum(granted); tuple = heap_formtuple(funcctx->slot->ttc_tupleDescriptor, values, nulls); diff --git a/src/bin/initdb/initdb.sh b/src/bin/initdb/initdb.sh index 5dad4e34a0..b75e8c2a48 100644 --- a/src/bin/initdb/initdb.sh +++ b/src/bin/initdb/initdb.sh @@ -27,7 +27,7 @@ # Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group # Portions Copyright (c) 1994, Regents of the University of California # -# $Header: /cvsroot/pgsql/src/bin/initdb/Attic/initdb.sh,v 1.182 2003/01/23 23:39:01 petere Exp $ +# $Header: /cvsroot/pgsql/src/bin/initdb/Attic/initdb.sh,v 1.183 2003/02/19 04:02:54 momjian Exp $ # #------------------------------------------------------------------------- @@ -974,7 +974,7 @@ CREATE VIEW pg_stat_database AS \ CREATE VIEW pg_locks AS \ SELECT * \ - FROM pg_lock_status() AS L(relation oid, database oid, \ + FROM pg_lock_status() AS L(object oid, class oid, database oid, \ transaction xid, pid int4, mode text, granted boolean); CREATE VIEW pg_settings AS \ diff --git a/src/include/storage/lmgr.h b/src/include/storage/lmgr.h index 8437e104f4..17b095b274 100644 --- a/src/include/storage/lmgr.h +++ b/src/include/storage/lmgr.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: lmgr.h,v 1.36 2002/06/20 20:29:52 momjian Exp $ + * $Id: lmgr.h,v 1.37 2003/02/19 04:02:54 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -62,4 +62,8 @@ extern void UnlockPage(Relation relation, BlockNumber blkno, LOCKMODE lockmode); extern void XactLockTableInsert(TransactionId xid); extern void XactLockTableWait(TransactionId xid); +/* Lock an arbitrary database object in the current database */ +extern void LockObject(Oid objId, Oid classId, LOCKMODE lockmode); +extern void UnlockObject(Oid objId, Oid classId, LOCKMODE lockmode); + #endif /* LMGR_H */ diff --git a/src/include/storage/lock.h b/src/include/storage/lock.h index f31dc1d9b8..fb40a5d104 100644 --- a/src/include/storage/lock.h +++ b/src/include/storage/lock.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: lock.h,v 1.69 2003/02/18 02:13:24 momjian Exp $ + * $Id: lock.h,v 1.70 2003/02/19 04:02:54 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -100,13 +100,14 @@ typedef struct LOCKMETHODTABLE */ typedef struct LOCKTAG { - Oid relId; + Oid objId; + Oid classId; Oid dbId; union { BlockNumber blkno; TransactionId xid; - } objId; + } objsubId; /* * offnum should be part of objId.tupleId above, but would increase diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out index f302ad9313..12bfccc017 100644 --- a/src/test/regress/expected/rules.out +++ b/src/test/regress/expected/rules.out @@ -1271,7 +1271,7 @@ SELECT viewname, definition FROM pg_views WHERE schemaname <> 'information_schem --------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- iexit | SELECT ih.name, ih.thepath, interpt_pp(ih.thepath, r.thepath) AS exit FROM ihighway ih, ramp r WHERE (ih.thepath ## r.thepath); pg_indexes | SELECT n.nspname AS schemaname, c.relname AS tablename, i.relname AS indexname, pg_get_indexdef(i.oid) AS indexdef FROM (((pg_index x JOIN pg_class c ON ((c.oid = x.indrelid))) JOIN pg_class i ON ((i.oid = x.indexrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE ((c.relkind = 'r'::"char") AND (i.relkind = 'i'::"char")); - pg_locks | SELECT l.relation, l."database", l."transaction", l.pid, l."mode", l.granted FROM pg_lock_status() l(relation oid, "database" oid, "transaction" xid, pid integer, "mode" text, granted boolean); + pg_locks | SELECT l.object, l."class", l."database", l."transaction", l.pid, l."mode", l.granted FROM pg_lock_status() l(object oid, "class" oid, "database" oid, "transaction" xid, pid integer, "mode" text, granted boolean); pg_rules | SELECT n.nspname AS schemaname, c.relname AS tablename, r.rulename, pg_get_ruledef(r.oid) AS definition FROM ((pg_rewrite r JOIN pg_class c ON ((c.oid = r.ev_class))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (r.rulename <> '_RETURN'::name); pg_settings | SELECT a.name, a.setting FROM pg_show_all_settings() a(name text, setting text); pg_stat_activity | SELECT d.oid AS datid, d.datname, pg_stat_get_backend_pid(s.backendid) AS procpid, pg_stat_get_backend_userid(s.backendid) AS usesysid, u.usename, pg_stat_get_backend_activity(s.backendid) AS current_query FROM pg_database d, (SELECT pg_stat_get_backend_idset() AS backendid) s, pg_shadow u WHERE ((pg_stat_get_backend_dbid(s.backendid) = d.oid) AND (pg_stat_get_backend_userid(s.backendid) = u.usesysid));