
#ifndef XLOG_UTILS_H

#include "access/rmgr.h"
#include "utils/rel.h"

extern int XLogIsOwnerOfTuple(RelFileNode hnode, ItemPointer iptr, 
					TransactionId xid, CommandId cid);
extern bool XLogIsValidTuple(RelFileNode hnode, ItemPointer iptr);

extern void XLogOpenLogRelation(void);

extern void XLogInitRelationCache(void);
extern void XLogCloseRelationCache(void);

extern Relation XLogOpenRelation(bool redo, RmgrId rmid, RelFileNode rnode);
extern Buffer XLogReadBuffer(bool extend, Relation reln, BlockNumber blkno);

#endif
