C++ (Cpp) heap_get_latest_tid Examples

Example #1

File: tid.c Project: myechuri/pipelinedb

Datum
currtid_byrelname(PG_FUNCTION_ARGS)
{
	text	   *relname = PG_GETARG_TEXT_P(0);
	ItemPointer tid = PG_GETARG_ITEMPOINTER(1);
	ItemPointer result;
	RangeVar   *relrv;
	Relation	rel;
	AclResult	aclresult;
	Snapshot	snapshot;

	relrv = makeRangeVarFromNameList(textToQualifiedNameList(relname));
	rel = heap_openrv(relrv, AccessShareLock);

	aclresult = pg_class_aclcheck(RelationGetRelid(rel), GetUserId(),
								  ACL_SELECT);
	if (aclresult != ACLCHECK_OK)
		aclcheck_error(aclresult, ACL_KIND_CLASS,
					   RelationGetRelationName(rel));

	if (rel->rd_rel->relkind == RELKIND_VIEW || rel->rd_rel->relkind == RELKIND_CONTVIEW)
		return currtid_for_view(rel, tid);

	result = (ItemPointer) palloc(sizeof(ItemPointerData));
	ItemPointerCopy(tid, result);

	snapshot = RegisterSnapshot(GetLatestSnapshot());
	heap_get_latest_tid(rel, snapshot, result);
	UnregisterSnapshot(snapshot);

	heap_close(rel, AccessShareLock);

	PG_RETURN_ITEMPOINTER(result);
}

Example #2

File: tid.c Project: sunyangkobe/cscd43

Datum
currtid_byreloid(PG_FUNCTION_ARGS)
{
	Oid			reloid = PG_GETARG_OID(0);
	ItemPointer tid = PG_GETARG_ITEMPOINTER(1);
	ItemPointer result;
	Relation	rel;

	result = (ItemPointer) palloc(sizeof(ItemPointerData));
	if (!reloid)
	{
		*result = Current_last_tid;
		PG_RETURN_ITEMPOINTER(result);
	}

	rel = heap_open(reloid, AccessShareLock);
	if (rel->rd_rel->relkind == RELKIND_VIEW)
		return currtid_for_view(rel, tid);

	ItemPointerCopy(tid, result);
	heap_get_latest_tid(rel, SnapshotNow, result);

	heap_close(rel, AccessShareLock);

	PG_RETURN_ITEMPOINTER(result);
}

Example #3

File: tid.c Project: Aldizh/buffer_manager

Datum
currtid_byreloid(PG_FUNCTION_ARGS)
{
	Oid			reloid = PG_GETARG_OID(0);
	ItemPointer tid = PG_GETARG_ITEMPOINTER(1);
	ItemPointer result;
	Relation	rel;
	AclResult	aclresult;

	result = (ItemPointer) palloc(sizeof(ItemPointerData));
	if (!reloid)
	{
		*result = Current_last_tid;
		PG_RETURN_ITEMPOINTER(result);
	}

	rel = heap_open(reloid, AccessShareLock);

	aclresult = pg_class_aclcheck(RelationGetRelid(rel), GetUserId(),
								  ACL_SELECT);
	if (aclresult != ACLCHECK_OK)
		aclcheck_error(aclresult, ACL_KIND_CLASS,
					   RelationGetRelationName(rel));

	if (rel->rd_rel->relkind == RELKIND_VIEW)
		return currtid_for_view(rel, tid);

	ItemPointerCopy(tid, result);
	heap_get_latest_tid(rel, SnapshotNow, result);

	heap_close(rel, AccessShareLock);

	PG_RETURN_ITEMPOINTER(result);
}

Example #4

File: tid.c Project: BALDELab/incubator-hawq

Datum
currtid_byrelname(PG_FUNCTION_ARGS)
{
	text	   *relname = PG_GETARG_TEXT_P(0);
	ItemPointer tid = PG_GETARG_ITEMPOINTER(1);
	ItemPointer result;
	RangeVar   *relrv;
	Relation	rel;
	AclResult	aclresult;

	/*
	 * Immediately inform client that the function is not supported
	 */

	elog(ERROR, "Function currtid2 is not supported by GPDB");

	relrv = makeRangeVarFromNameList(textToQualifiedNameList(relname));
	rel = heap_openrv(relrv, AccessShareLock);

	aclresult = pg_class_aclcheck(RelationGetRelid(rel), GetUserId(),
								  ACL_SELECT);
	if (aclresult != ACLCHECK_OK)
		aclcheck_error(aclresult, ACL_KIND_CLASS,
					   RelationGetRelationName(rel));

	if (rel->rd_rel->relkind == RELKIND_VIEW)
		return currtid_for_view(rel, tid);

	result = (ItemPointer) palloc(sizeof(ItemPointerData));
	ItemPointerCopy(tid, result);

	heap_get_latest_tid(rel, SnapshotNow, result);

	heap_close(rel, AccessShareLock);

	PG_RETURN_ITEMPOINTER(result);
}

Example #5

File: tid.c Project: sunyangkobe/cscd43

Datum
currtid_byrelname(PG_FUNCTION_ARGS)
{
	text	   *relname = PG_GETARG_TEXT_P(0);
	ItemPointer tid = PG_GETARG_ITEMPOINTER(1);
	ItemPointer result;
	RangeVar   *relrv;
	Relation	rel;

	relrv = makeRangeVarFromNameList(textToQualifiedNameList(relname,
												   "currtid_byrelname"));
	rel = heap_openrv(relrv, AccessShareLock);
	if (rel->rd_rel->relkind == RELKIND_VIEW)
		return currtid_for_view(rel, tid);

	result = (ItemPointer) palloc(sizeof(ItemPointerData));
	ItemPointerCopy(tid, result);

	heap_get_latest_tid(rel, SnapshotNow, result);

	heap_close(rel, AccessShareLock);

	PG_RETURN_ITEMPOINTER(result);
}