/*-------------------------------------------------------------------------
*
* timestamp.h
- * Definitions for the SQL92 "timestamp" and "interval" types.
+ * Definitions for the SQL "timestamp" and "interval" types.
*
- * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
+ * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $Id: timestamp.h,v 1.13 2001/01/23 03:10:25 momjian Exp $
+ * src/include/utils/timestamp.h
*
*-------------------------------------------------------------------------
*/
#ifndef TIMESTAMP_H
#define TIMESTAMP_H
-#include <time.h>
-#include <math.h>
-#include <limits.h>
-#include <float.h>
-
+#include "datatype/timestamp.h"
#include "fmgr.h"
-
-
-/*
- * Timestamp represents absolute time.
- * Interval represents delta time. Keep track of months (and years)
- * separately since the elapsed time spanned is unknown until instantiated
- * relative to an absolute time.
- *
- * Note that Postgres uses "time interval" to mean a bounded interval,
- * consisting of a beginning and ending time, not a time span - thomas 97/03/20
- */
-
-typedef double Timestamp;
-
-typedef struct
-{
- double time; /* all time units other than months and years */
- int32 month; /* months and years, after time for alignment */
-} Interval;
+#include "pgtime.h"
/*
* Macros for fmgr-callable functions.
*
- * For Timestamp, we make use of the same support routines as for float8.
- * Therefore Timestamp is pass-by-reference if and only if float8 is!
+ * For Timestamp, we make use of the same support routines as for int64
+ * or float8. Therefore Timestamp is pass-by-reference if and only if
+ * int64 or float8 is!
*/
-#define DatumGetTimestamp(X) ((Timestamp) DatumGetFloat8(X))
+#ifdef HAVE_INT64_TIMESTAMP
+
+#define DatumGetTimestamp(X) ((Timestamp) DatumGetInt64(X))
+#define DatumGetTimestampTz(X) ((TimestampTz) DatumGetInt64(X))
#define DatumGetIntervalP(X) ((Interval *) DatumGetPointer(X))
-#define TimestampGetDatum(X) Float8GetDatum(X)
-#define IntervalPGetDatum(X) PointerGetDatum(X)
+#define TimestampGetDatum(X) Int64GetDatum(X)
+#define TimestampTzGetDatum(X) Int64GetDatum(X)
+#define IntervalPGetDatum(X) PointerGetDatum(X)
-#define PG_GETARG_TIMESTAMP(n) DatumGetTimestamp(PG_GETARG_DATUM(n))
+#define PG_GETARG_TIMESTAMP(n) DatumGetTimestamp(PG_GETARG_DATUM(n))
+#define PG_GETARG_TIMESTAMPTZ(n) DatumGetTimestampTz(PG_GETARG_DATUM(n))
#define PG_GETARG_INTERVAL_P(n) DatumGetIntervalP(PG_GETARG_DATUM(n))
-#define PG_RETURN_TIMESTAMP(x) return TimestampGetDatum(x)
+#define PG_RETURN_TIMESTAMP(x) return TimestampGetDatum(x)
+#define PG_RETURN_TIMESTAMPTZ(x) return TimestampTzGetDatum(x)
#define PG_RETURN_INTERVAL_P(x) return IntervalPGetDatum(x)
+#else /* !HAVE_INT64_TIMESTAMP */
+#define DatumGetTimestamp(X) ((Timestamp) DatumGetFloat8(X))
+#define DatumGetTimestampTz(X) ((TimestampTz) DatumGetFloat8(X))
+#define DatumGetIntervalP(X) ((Interval *) DatumGetPointer(X))
-#ifdef NAN
-#define DT_INVALID (NAN)
-#else
-#define DT_INVALID (DBL_MIN+DBL_MIN)
-#endif
-#ifdef HUGE_VAL
-#define DT_NOBEGIN (-HUGE_VAL)
-#define DT_NOEND (HUGE_VAL)
-#else
-#define DT_NOBEGIN (-DBL_MAX)
-#define DT_NOEND (DBL_MAX)
-#endif
-#define DT_CURRENT (DBL_MIN)
-#define DT_EPOCH (-DBL_MIN)
-
-#define TIMESTAMP_INVALID(j) do {j = DT_INVALID;} while (0)
-#ifdef NAN
-#define TIMESTAMP_IS_INVALID(j) (isnan(j))
-#else
-#define TIMESTAMP_IS_INVALID(j) (j == DT_INVALID)
-#endif
+#define TimestampGetDatum(X) Float8GetDatum(X)
+#define TimestampTzGetDatum(X) Float8GetDatum(X)
+#define IntervalPGetDatum(X) PointerGetDatum(X)
-#define TIMESTAMP_NOBEGIN(j) do {j = DT_NOBEGIN;} while (0)
-#define TIMESTAMP_IS_NOBEGIN(j) (j == DT_NOBEGIN)
+#define PG_GETARG_TIMESTAMP(n) DatumGetTimestamp(PG_GETARG_DATUM(n))
+#define PG_GETARG_TIMESTAMPTZ(n) DatumGetTimestampTz(PG_GETARG_DATUM(n))
+#define PG_GETARG_INTERVAL_P(n) DatumGetIntervalP(PG_GETARG_DATUM(n))
-#define TIMESTAMP_NOEND(j) do {j = DT_NOEND;} while (0)
-#define TIMESTAMP_IS_NOEND(j) (j == DT_NOEND)
+#define PG_RETURN_TIMESTAMP(x) return TimestampGetDatum(x)
+#define PG_RETURN_TIMESTAMPTZ(x) return TimestampTzGetDatum(x)
+#define PG_RETURN_INTERVAL_P(x) return IntervalPGetDatum(x)
+#endif /* HAVE_INT64_TIMESTAMP */
-#define TIMESTAMP_CURRENT(j) do {j = DT_CURRENT;} while (0)
-#if defined(linux) && defined(__powerpc__)
-extern int timestamp_is_current(double j);
-#define TIMESTAMP_IS_CURRENT(j) timestamp_is_current(j)
-#else
-#define TIMESTAMP_IS_CURRENT(j) (j == DT_CURRENT)
-#endif
+#define TIMESTAMP_MASK(b) (1 << (b))
+#define INTERVAL_MASK(b) (1 << (b))
-#define TIMESTAMP_EPOCH(j) do {j = DT_EPOCH;} while (0)
-#if defined(linux) && defined(__powerpc__)
-extern int timestamp_is_epoch(double j);
+/* Macros to handle packing and unpacking the typmod field for intervals */
+#define INTERVAL_FULL_RANGE (0x7FFF)
+#define INTERVAL_RANGE_MASK (0x7FFF)
+#define INTERVAL_FULL_PRECISION (0xFFFF)
+#define INTERVAL_PRECISION_MASK (0xFFFF)
+#define INTERVAL_TYPMOD(p,r) ((((r) & INTERVAL_RANGE_MASK) << 16) | ((p) & INTERVAL_PRECISION_MASK))
+#define INTERVAL_PRECISION(t) ((t) & INTERVAL_PRECISION_MASK)
+#define INTERVAL_RANGE(t) (((t) >> 16) & INTERVAL_RANGE_MASK)
-#define TIMESTAMP_IS_EPOCH(j) timestamp_is_epoch(j)
+#ifdef HAVE_INT64_TIMESTAMP
+#define TimestampTzPlusMilliseconds(tz,ms) ((tz) + ((ms) * (int64) 1000))
#else
-#define TIMESTAMP_IS_EPOCH(j) (j == DT_EPOCH)
+#define TimestampTzPlusMilliseconds(tz,ms) ((tz) + ((ms) / 1000.0))
#endif
-#define TIMESTAMP_IS_RELATIVE(j) (TIMESTAMP_IS_CURRENT(j) || TIMESTAMP_IS_EPOCH(j))
-#define TIMESTAMP_NOT_FINITE(j) (TIMESTAMP_IS_INVALID(j) \
- || TIMESTAMP_IS_NOBEGIN(j) || TIMESTAMP_IS_NOEND(j))
-#define TIMESTAMP_IS_RESERVED(j) (TIMESTAMP_IS_RELATIVE(j) || TIMESTAMP_NOT_FINITE(j))
-#define INTERVAL_INVALID(j) do {(j).time = DT_INVALID;} while (0)
-#ifdef NAN
-#define INTERVAL_IS_INVALID(j) (isnan((j).time))
-#else
-#define INTERVAL_IS_INVALID(j) ((j).time == DT_INVALID)
-#endif
-#define INTERVAL_NOT_FINITE(j) INTERVAL_IS_INVALID(j)
+/* Set at postmaster start */
+extern TimestampTz PgStartTime;
-#define TIME_PREC_INV 1000000.0
-#define JROUND(j) (rint(((double) (j))*TIME_PREC_INV)/TIME_PREC_INV)
+/* Set at configuration reload */
+extern TimestampTz PgReloadTime;
/*
extern Datum timestamp_in(PG_FUNCTION_ARGS);
extern Datum timestamp_out(PG_FUNCTION_ARGS);
+extern Datum timestamp_recv(PG_FUNCTION_ARGS);
+extern Datum timestamp_send(PG_FUNCTION_ARGS);
+extern Datum timestamptypmodin(PG_FUNCTION_ARGS);
+extern Datum timestamptypmodout(PG_FUNCTION_ARGS);
+extern Datum timestamp_transform(PG_FUNCTION_ARGS);
+extern Datum timestamp_scale(PG_FUNCTION_ARGS);
extern Datum timestamp_eq(PG_FUNCTION_ARGS);
extern Datum timestamp_ne(PG_FUNCTION_ARGS);
extern Datum timestamp_lt(PG_FUNCTION_ARGS);
extern Datum timestamp_gt(PG_FUNCTION_ARGS);
extern Datum timestamp_finite(PG_FUNCTION_ARGS);
extern Datum timestamp_cmp(PG_FUNCTION_ARGS);
+extern Datum timestamp_sortsupport(PG_FUNCTION_ARGS);
+extern Datum timestamp_hash(PG_FUNCTION_ARGS);
extern Datum timestamp_smaller(PG_FUNCTION_ARGS);
extern Datum timestamp_larger(PG_FUNCTION_ARGS);
+extern Datum timestamp_eq_timestamptz(PG_FUNCTION_ARGS);
+extern Datum timestamp_ne_timestamptz(PG_FUNCTION_ARGS);
+extern Datum timestamp_lt_timestamptz(PG_FUNCTION_ARGS);
+extern Datum timestamp_le_timestamptz(PG_FUNCTION_ARGS);
+extern Datum timestamp_gt_timestamptz(PG_FUNCTION_ARGS);
+extern Datum timestamp_ge_timestamptz(PG_FUNCTION_ARGS);
+extern Datum timestamp_cmp_timestamptz(PG_FUNCTION_ARGS);
+
+extern Datum make_timestamp(PG_FUNCTION_ARGS);
+extern Datum make_timestamptz(PG_FUNCTION_ARGS);
+extern Datum make_timestamptz_at_timezone(PG_FUNCTION_ARGS);
+
+extern Datum timestamptz_eq_timestamp(PG_FUNCTION_ARGS);
+extern Datum timestamptz_ne_timestamp(PG_FUNCTION_ARGS);
+extern Datum timestamptz_lt_timestamp(PG_FUNCTION_ARGS);
+extern Datum timestamptz_le_timestamp(PG_FUNCTION_ARGS);
+extern Datum timestamptz_gt_timestamp(PG_FUNCTION_ARGS);
+extern Datum timestamptz_ge_timestamp(PG_FUNCTION_ARGS);
+extern Datum timestamptz_cmp_timestamp(PG_FUNCTION_ARGS);
+
extern Datum interval_in(PG_FUNCTION_ARGS);
extern Datum interval_out(PG_FUNCTION_ARGS);
+extern Datum interval_recv(PG_FUNCTION_ARGS);
+extern Datum interval_send(PG_FUNCTION_ARGS);
+extern Datum intervaltypmodin(PG_FUNCTION_ARGS);
+extern Datum intervaltypmodout(PG_FUNCTION_ARGS);
+extern Datum interval_transform(PG_FUNCTION_ARGS);
+extern Datum interval_scale(PG_FUNCTION_ARGS);
extern Datum interval_eq(PG_FUNCTION_ARGS);
extern Datum interval_ne(PG_FUNCTION_ARGS);
extern Datum interval_lt(PG_FUNCTION_ARGS);
extern Datum interval_hash(PG_FUNCTION_ARGS);
extern Datum interval_smaller(PG_FUNCTION_ARGS);
extern Datum interval_larger(PG_FUNCTION_ARGS);
+extern Datum interval_justify_interval(PG_FUNCTION_ARGS);
+extern Datum interval_justify_hours(PG_FUNCTION_ARGS);
+extern Datum interval_justify_days(PG_FUNCTION_ARGS);
+extern Datum make_interval(PG_FUNCTION_ARGS);
-extern Datum timestamp_text(PG_FUNCTION_ARGS);
-extern Datum text_timestamp(PG_FUNCTION_ARGS);
-extern Datum interval_text(PG_FUNCTION_ARGS);
-extern Datum text_interval(PG_FUNCTION_ARGS);
extern Datum timestamp_trunc(PG_FUNCTION_ARGS);
extern Datum interval_trunc(PG_FUNCTION_ARGS);
extern Datum timestamp_part(PG_FUNCTION_ARGS);
extern Datum interval_part(PG_FUNCTION_ARGS);
extern Datum timestamp_zone(PG_FUNCTION_ARGS);
extern Datum timestamp_izone(PG_FUNCTION_ARGS);
+extern Datum timestamp_timestamptz(PG_FUNCTION_ARGS);
+
+extern Datum timestamptz_in(PG_FUNCTION_ARGS);
+extern Datum timestamptz_out(PG_FUNCTION_ARGS);
+extern Datum timestamptz_recv(PG_FUNCTION_ARGS);
+extern Datum timestamptz_send(PG_FUNCTION_ARGS);
+extern Datum timestamptztypmodin(PG_FUNCTION_ARGS);
+extern Datum timestamptztypmodout(PG_FUNCTION_ARGS);
+extern Datum timestamptz_scale(PG_FUNCTION_ARGS);
+extern Datum timestamptz_timestamp(PG_FUNCTION_ARGS);
+extern Datum timestamptz_zone(PG_FUNCTION_ARGS);
+extern Datum timestamptz_izone(PG_FUNCTION_ARGS);
+extern Datum timestamptz_timestamptz(PG_FUNCTION_ARGS);
extern Datum interval_um(PG_FUNCTION_ARGS);
extern Datum interval_pl(PG_FUNCTION_ARGS);
extern Datum mul_d_interval(PG_FUNCTION_ARGS);
extern Datum interval_div(PG_FUNCTION_ARGS);
extern Datum interval_accum(PG_FUNCTION_ARGS);
+extern Datum interval_accum_inv(PG_FUNCTION_ARGS);
extern Datum interval_avg(PG_FUNCTION_ARGS);
extern Datum timestamp_mi(PG_FUNCTION_ARGS);
-extern Datum timestamp_pl_span(PG_FUNCTION_ARGS);
-extern Datum timestamp_mi_span(PG_FUNCTION_ARGS);
+extern Datum timestamp_pl_interval(PG_FUNCTION_ARGS);
+extern Datum timestamp_mi_interval(PG_FUNCTION_ARGS);
extern Datum timestamp_age(PG_FUNCTION_ARGS);
extern Datum overlaps_timestamp(PG_FUNCTION_ARGS);
+extern Datum timestamptz_pl_interval(PG_FUNCTION_ARGS);
+extern Datum timestamptz_mi_interval(PG_FUNCTION_ARGS);
+extern Datum timestamptz_age(PG_FUNCTION_ARGS);
+extern Datum timestamptz_trunc(PG_FUNCTION_ARGS);
+extern Datum timestamptz_part(PG_FUNCTION_ARGS);
+
extern Datum now(PG_FUNCTION_ARGS);
+extern Datum statement_timestamp(PG_FUNCTION_ARGS);
+extern Datum clock_timestamp(PG_FUNCTION_ARGS);
+
+extern Datum pg_postmaster_start_time(PG_FUNCTION_ARGS);
+extern Datum pg_conf_load_time(PG_FUNCTION_ARGS);
+
+extern Datum generate_series_timestamp(PG_FUNCTION_ARGS);
+extern Datum generate_series_timestamptz(PG_FUNCTION_ARGS);
/* Internal routines (not fmgr-callable) */
-extern int tm2timestamp(struct tm * tm, double fsec, int *tzp, Timestamp *dt);
-extern int timestamp2tm(Timestamp dt, int *tzp, struct tm * tm,
- double *fsec, char **tzn);
+extern TimestampTz GetCurrentTimestamp(void);
+extern void TimestampDifference(TimestampTz start_time, TimestampTz stop_time,
+ long *secs, int *microsecs);
+extern bool TimestampDifferenceExceeds(TimestampTz start_time,
+ TimestampTz stop_time,
+ int msec);
+
+/*
+ * Prototypes for functions to deal with integer timestamps, when the native
+ * format is float timestamps.
+ */
+#ifndef HAVE_INT64_TIMESTAMP
+extern int64 GetCurrentIntegerTimestamp(void);
+extern TimestampTz IntegerTimestampToTimestampTz(int64 timestamp);
+#else
+#define GetCurrentIntegerTimestamp() GetCurrentTimestamp()
+#define IntegerTimestampToTimestampTz(timestamp) (timestamp)
+#endif
+
+extern TimestampTz time_t_to_timestamptz(pg_time_t tm);
+extern pg_time_t timestamptz_to_time_t(TimestampTz t);
+
+extern const char *timestamptz_to_str(TimestampTz t);
+
+extern int tm2timestamp(struct pg_tm * tm, fsec_t fsec, int *tzp, Timestamp *dt);
+extern int timestamp2tm(Timestamp dt, int *tzp, struct pg_tm * tm,
+ fsec_t *fsec, const char **tzn, pg_tz *attimezone);
+extern void dt2time(Timestamp dt, int *hour, int *min, int *sec, fsec_t *fsec);
+
+extern int interval2tm(Interval span, struct pg_tm * tm, fsec_t *fsec);
+extern int tm2interval(struct pg_tm * tm, fsec_t fsec, Interval *span);
+
+extern Timestamp SetEpochTimestamp(void);
+extern void GetEpochTime(struct pg_tm * tm);
+
+extern int timestamp_cmp_internal(Timestamp dt1, Timestamp dt2);
-extern Timestamp SetTimestamp(Timestamp timestamp);
+/* timestamp comparison works for timestamptz also */
+#define timestamptz_cmp_internal(dt1,dt2) timestamp_cmp_internal(dt1, dt2)
-extern void isoweek2date( int woy, int *year, int *mon, int *mday);
+extern int isoweek2j(int year, int week);
+extern void isoweek2date(int woy, int *year, int *mon, int *mday);
+extern void isoweekdate2date(int isoweek, int wday, int *year, int *mon, int *mday);
extern int date2isoweek(int year, int mon, int mday);
+extern int date2isoyear(int year, int mon, int mday);
+extern int date2isoyearday(int year, int mon, int mday);
-#endif /* TIMESTAMP_H */
+#endif /* TIMESTAMP_H */
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