pg_lsn.h

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/*-------------------------------------------------------------------------
 *
 * pg_lsn.h
 *      Declarations for operations on log sequence numbers (LSNs) of
 *      PostgreSQL.
 *
 *
 * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/utils/pg_lsn.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef PG_LSN_H
#define PG_LSN_H
 
#include "access/xlogdefs.h"
#include "fmgr.h"
 
static inline XLogRecPtr
DatumGetLSN(Datum X)
{
    return (XLogRecPtr) DatumGetInt64(X);
}
 
static inline Datum
LSNGetDatum(XLogRecPtr X)
{
    return Int64GetDatum((int64) X);
}
 
#define PG_GETARG_LSN(n)     DatumGetLSN(PG_GETARG_DATUM(n))
#define PG_RETURN_LSN(x)     return LSNGetDatum(x)
 
extern XLogRecPtr pg_lsn_in_internal(const char *str, bool *have_error);
 
#endif                          /* PG_LSN_H */