codekingpro/portable-devtools

1/*-------------------------------------------------------------------------2 *3 * timestamp.h4 *	  Definitions for the SQL "timestamp" and "interval" types.5 *6 * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group7 * Portions Copyright (c) 1994, Regents of the University of California8 *9 * src/include/utils/timestamp.h10 *11 *-------------------------------------------------------------------------12 */13#ifndef TIMESTAMP_H14#define TIMESTAMP_H15 16#include "datatype/timestamp.h"17#include "fmgr.h"18#include "pgtime.h"19 20 21/*22 * Functions for fmgr-callable functions.23 *24 * For Timestamp, we make use of the same support routines as for int64.25 * Therefore Timestamp is pass-by-reference if and only if int64 is!26 */27static inline Timestamp28DatumGetTimestamp(Datum X)29{30	return (Timestamp) DatumGetInt64(X);31}32 33static inline TimestampTz34DatumGetTimestampTz(Datum X)35{36	return (TimestampTz) DatumGetInt64(X);37}38 39static inline Interval *40DatumGetIntervalP(Datum X)41{42	return (Interval *) DatumGetPointer(X);43}44 45static inline Datum46TimestampGetDatum(Timestamp X)47{48	return Int64GetDatum(X);49}50 51static inline Datum52TimestampTzGetDatum(TimestampTz X)53{54	return Int64GetDatum(X);55}56 57static inline Datum58IntervalPGetDatum(const Interval *X)59{60	return PointerGetDatum(X);61}62 63#define PG_GETARG_TIMESTAMP(n) DatumGetTimestamp(PG_GETARG_DATUM(n))64#define PG_GETARG_TIMESTAMPTZ(n) DatumGetTimestampTz(PG_GETARG_DATUM(n))65#define PG_GETARG_INTERVAL_P(n) DatumGetIntervalP(PG_GETARG_DATUM(n))66 67#define PG_RETURN_TIMESTAMP(x) return TimestampGetDatum(x)68#define PG_RETURN_TIMESTAMPTZ(x) return TimestampTzGetDatum(x)69#define PG_RETURN_INTERVAL_P(x) return IntervalPGetDatum(x)70 71 72#define TIMESTAMP_MASK(b) (1 << (b))73#define INTERVAL_MASK(b) (1 << (b))74 75/* Macros to handle packing and unpacking the typmod field for intervals */76#define INTERVAL_FULL_RANGE (0x7FFF)77#define INTERVAL_RANGE_MASK (0x7FFF)78#define INTERVAL_FULL_PRECISION (0xFFFF)79#define INTERVAL_PRECISION_MASK (0xFFFF)80#define INTERVAL_TYPMOD(p,r) ((((r) & INTERVAL_RANGE_MASK) << 16) | ((p) & INTERVAL_PRECISION_MASK))81#define INTERVAL_PRECISION(t) ((t) & INTERVAL_PRECISION_MASK)82#define INTERVAL_RANGE(t) (((t) >> 16) & INTERVAL_RANGE_MASK)83 84/* Macros for doing timestamp arithmetic without assuming timestamp's units */85#define TimestampTzPlusMilliseconds(tz,ms) ((tz) + ((ms) * (int64) 1000))86#define TimestampTzPlusSeconds(tz,s) ((tz) + ((s) * (int64) 1000000))87 88 89/* Set at postmaster start */90extern PGDLLIMPORT TimestampTz PgStartTime;91 92/* Set at configuration reload */93extern PGDLLIMPORT TimestampTz PgReloadTime;94 95 96/* Internal routines (not fmgr-callable) */97 98extern int32 anytimestamp_typmod_check(bool istz, int32 typmod);99 100extern TimestampTz GetCurrentTimestamp(void);101extern TimestampTz GetSQLCurrentTimestamp(int32 typmod);102extern Timestamp GetSQLLocalTimestamp(int32 typmod);103extern void TimestampDifference(TimestampTz start_time, TimestampTz stop_time,104								long *secs, int *microsecs);105extern long TimestampDifferenceMilliseconds(TimestampTz start_time,106											TimestampTz stop_time);107extern bool TimestampDifferenceExceeds(TimestampTz start_time,108									   TimestampTz stop_time,109									   int msec);110 111extern TimestampTz time_t_to_timestamptz(pg_time_t tm);112extern pg_time_t timestamptz_to_time_t(TimestampTz t);113 114extern const char *timestamptz_to_str(TimestampTz t);115 116extern int	tm2timestamp(struct pg_tm *tm, fsec_t fsec, int *tzp, Timestamp *result);117extern int	timestamp2tm(Timestamp dt, int *tzp, struct pg_tm *tm,118						 fsec_t *fsec, const char **tzn, pg_tz *attimezone);119extern void dt2time(Timestamp jd, int *hour, int *min, int *sec, fsec_t *fsec);120 121extern void interval2itm(Interval span, struct pg_itm *itm);122extern int	itm2interval(struct pg_itm *itm, Interval *span);123extern int	itmin2interval(struct pg_itm_in *itm_in, Interval *span);124 125extern Timestamp SetEpochTimestamp(void);126extern void GetEpochTime(struct pg_tm *tm);127 128extern int	timestamp_cmp_internal(Timestamp dt1, Timestamp dt2);129 130/* timestamp comparison works for timestamptz also */131#define timestamptz_cmp_internal(dt1,dt2)	timestamp_cmp_internal(dt1, dt2)132 133extern TimestampTz timestamp2timestamptz_opt_overflow(Timestamp timestamp,134													  int *overflow);135extern int32 timestamp_cmp_timestamptz_internal(Timestamp timestampVal,136												TimestampTz dt2);137 138extern int	isoweek2j(int year, int week);139extern void isoweek2date(int woy, int *year, int *mon, int *mday);140extern void isoweekdate2date(int isoweek, int wday, int *year, int *mon, int *mday);141extern int	date2isoweek(int year, int mon, int mday);142extern int	date2isoyear(int year, int mon, int mday);143extern int	date2isoyearday(int year, int mon, int mday);144 145extern bool TimestampTimestampTzRequiresRewrite(void);146 147#endif							/* TIMESTAMP_H */148