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#ifndef XLOG_UTILS_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
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