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Make DROP TABLE rollback-able: postpone physical file delete until commit.
(WAL logging for this is not done yet, however.) Clean up a number of really crufty things that are no longer needed now that DROP behaves nicely. Make temp table mapper do the right things when drop or rename affecting a temp table is rolled back. Also, remove "relation modified while in use" error check, in favor of locking tables at first reference and holding that lock throughout the statement.
This commit is contained in:
Tom Lane
148
src/backend/utils/cache/inval.c
vendored
148
src/backend/utils/cache/inval.c
vendored
@@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/utils/cache/inval.c,v 1.37 2000/06/08 19:51:03 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/utils/cache/inval.c,v 1.38 2000/11/08 22:10:01 tgl Exp $
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*
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* Note - this code is real crufty...
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*
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@@ -80,10 +80,10 @@ typedef InvalidationMessageData *InvalidationMessage;
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/*
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* ----------------
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* Invalidation info was devided into three parts.
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* 1) shared invalidation to be registerd for all backends
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* Invalidation info is divided into three parts.
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* 1) shared invalidation to be registered for all backends
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* 2) local invalidation for the transaction itself
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* 3) rollback information for the transaction itself
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* 3) rollback information for the transaction itself (in case we abort)
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* ----------------
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*/
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@@ -160,7 +160,9 @@ LocalInvalidRegister(LocalInvalid invalid,
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* --------------------------------
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*/
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static void
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LocalInvalidInvalidate(LocalInvalid invalid, void (*function) (), bool freemember)
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LocalInvalidInvalidate(LocalInvalid invalid,
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void (*function) (),
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bool freemember)
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{
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InvalidationEntryData *entryDataP;
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@@ -216,15 +218,10 @@ elog(DEBUG, "CacheIdRegisterLocalInvalid(%d, %d, [%d, %d])", \
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elog(DEBUG, "CacheIdRegisterLocalRollback(%d, %d, [%d, %d])", \
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cacheId, hashIndex, ItemPointerGetBlockNumber(pointer), \
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ItemPointerGetOffsetNumber(pointer))
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#define CacheIdImmediateRegisterSharedInvalid_DEBUG1 \
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elog(DEBUG, "CacheIdImmediateRegisterSharedInvalid(%d, %d, [%d, %d])", \
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cacheId, hashIndex, ItemPointerGetBlockNumber(pointer), \
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ItemPointerGetOffsetNumber(pointer))
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#else
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#define CacheIdRegisterSpecifiedLocalInvalid_DEBUG1
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#define CacheIdRegisterLocalInvalid_DEBUG1
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#define CacheIdRegisterLocalRollback_DEBUG1
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#define CacheIdImmediateRegisterSharedInvalid_DEBUG1
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#endif /* INVALIDDEBUG */
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/* --------------------------------
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@@ -233,7 +230,9 @@ elog(DEBUG, "CacheIdImmediateRegisterSharedInvalid(%d, %d, [%d, %d])", \
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*/
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static LocalInvalid
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CacheIdRegisterSpecifiedLocalInvalid(LocalInvalid invalid,
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Index cacheId, Index hashIndex, ItemPointer pointer)
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Index cacheId,
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Index hashIndex,
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ItemPointer pointer)
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{
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InvalidationMessage message;
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@@ -317,43 +316,6 @@ CacheIdRegisterLocalRollback(Index cacheId, Index hashIndex,
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RollbackStack, cacheId, hashIndex, pointer);
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}
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/* --------------------------------
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* CacheIdImmediateRegisterSharedInvalid
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* --------------------------------
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*/
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static void
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CacheIdImmediateRegisterSharedInvalid(Index cacheId, Index hashIndex,
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ItemPointer pointer)
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{
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InvalidationMessage message;
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/* ----------------
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* debugging stuff
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* ----------------
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*/
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CacheIdImmediateRegisterSharedInvalid_DEBUG1;
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/* ----------------
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* create a message describing the system catalog tuple
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* we wish to invalidate.
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* ----------------
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*/
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message = (InvalidationMessage)
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InvalidationEntryAllocate(sizeof(InvalidationMessageData));
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message->kind = 'c';
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message->any.catalog.cacheId = cacheId;
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message->any.catalog.hashIndex = hashIndex;
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ItemPointerCopy(pointer, &message->any.catalog.pointerData);
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/* ----------------
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* Register a shared catalog cache invalidation.
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* ----------------
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*/
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InvalidationMessageRegisterSharedInvalid(message);
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free((Pointer) &((InvalidationUserData *) message)->dataP[-1]);
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}
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/* --------------------------------
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* RelationIdRegisterSpecifiedLocalInvalid
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* --------------------------------
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@@ -448,44 +410,6 @@ RelationIdRegisterLocalRollback(Oid relationId, Oid objectId)
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RollbackStack, relationId, objectId);
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}
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/* --------------------------------
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* RelationIdImmediateRegisterSharedInvalid
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* --------------------------------
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*/
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static void
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RelationIdImmediateRegisterSharedInvalid(Oid relationId, Oid objectId)
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{
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InvalidationMessage message;
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/* ----------------
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* debugging stuff
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* ----------------
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*/
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#ifdef INVALIDDEBUG
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elog(DEBUG, "RelationImmediateRegisterSharedInvalid(%u, %u)", relationId,
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objectId);
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#endif /* defined(INVALIDDEBUG) */
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/* ----------------
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* create a message describing the relation descriptor
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* we wish to invalidate.
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* ----------------
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*/
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message = (InvalidationMessage)
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InvalidationEntryAllocate(sizeof(InvalidationMessageData));
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message->kind = 'r';
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message->any.relation.relationId = relationId;
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message->any.relation.objectId = objectId;
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/* ----------------
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* Register a shared catalog cache invalidation.
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* ----------------
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*/
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InvalidationMessageRegisterSharedInvalid(message);
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free((Pointer) &((InvalidationUserData *) message)->dataP[-1]);
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}
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/* --------------------------------
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* CacheIdInvalidate
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*
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@@ -890,55 +814,3 @@ RelationMark4RollbackHeapTuple(Relation relation, HeapTuple tuple)
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RelationIdRegisterLocalRollback,
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"RelationMark4RollbackHeapTuple");
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}
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/*
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* ImmediateInvalidateSharedHeapTuple
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* Different from RelationInvalidateHeapTuple()
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* this function queues shared invalidation info immediately.
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*/
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void
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ImmediateInvalidateSharedHeapTuple(Relation relation, HeapTuple tuple)
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{
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InvokeHeapTupleInvalidation(relation, tuple,
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CacheIdImmediateRegisterSharedInvalid,
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RelationIdImmediateRegisterSharedInvalid,
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"ImmediateInvalidateSharedHeapTuple");
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}
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#ifdef NOT_USED
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/*
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* ImmediateSharedRelationCacheInvalidate
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* Register shared relation cache invalidation immediately
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*
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* This is needed for smgrunlink()/smgrtruncate().
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* Those functions unlink/truncate the base file immediately
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* and couldn't be rollbacked in case of abort/crash.
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* So relation cache invalidation must be registerd immediately.
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* Note:
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* Assumes Relation is valid.
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*/
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void
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ImmediateSharedRelationCacheInvalidate(Relation relation)
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{
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/* ----------------
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* sanity checks
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* ----------------
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*/
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Assert(RelationIsValid(relation));
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if (IsBootstrapProcessingMode())
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return;
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/* ----------------
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* debugging stuff
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* ----------------
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*/
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#ifdef INVALIDDEBUG
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elog(DEBUG, "ImmediateSharedRelationCacheInvalidate(%s)", \
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RelationGetPhysicalRelationName(relation));
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#endif /* defined(INVALIDDEBUG) */
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RelationIdImmediateRegisterSharedInvalid(
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RelOid_pg_class, RelationGetRelid(relation));
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}
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#endif
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