Header And Logo
|
00001 /*------------------------------------------------------------------------- 00002 * 00003 * timestamp.h 00004 * Definitions for the SQL "timestamp" and "interval" types. 00005 * 00006 * Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group 00007 * Portions Copyright (c) 1994, Regents of the University of California 00008 * 00009 * src/include/utils/timestamp.h 00010 * 00011 *------------------------------------------------------------------------- 00012 */ 00013 #ifndef TIMESTAMP_H 00014 #define TIMESTAMP_H 00015 00016 #include "datatype/timestamp.h" 00017 #include "fmgr.h" 00018 #include "pgtime.h" 00019 00020 00021 /* 00022 * Macros for fmgr-callable functions. 00023 * 00024 * For Timestamp, we make use of the same support routines as for int64 00025 * or float8. Therefore Timestamp is pass-by-reference if and only if 00026 * int64 or float8 is! 00027 */ 00028 #ifdef HAVE_INT64_TIMESTAMP 00029 00030 #define DatumGetTimestamp(X) ((Timestamp) DatumGetInt64(X)) 00031 #define DatumGetTimestampTz(X) ((TimestampTz) DatumGetInt64(X)) 00032 #define DatumGetIntervalP(X) ((Interval *) DatumGetPointer(X)) 00033 00034 #define TimestampGetDatum(X) Int64GetDatum(X) 00035 #define TimestampTzGetDatum(X) Int64GetDatum(X) 00036 #define IntervalPGetDatum(X) PointerGetDatum(X) 00037 00038 #define PG_GETARG_TIMESTAMP(n) DatumGetTimestamp(PG_GETARG_DATUM(n)) 00039 #define PG_GETARG_TIMESTAMPTZ(n) DatumGetTimestampTz(PG_GETARG_DATUM(n)) 00040 #define PG_GETARG_INTERVAL_P(n) DatumGetIntervalP(PG_GETARG_DATUM(n)) 00041 00042 #define PG_RETURN_TIMESTAMP(x) return TimestampGetDatum(x) 00043 #define PG_RETURN_TIMESTAMPTZ(x) return TimestampTzGetDatum(x) 00044 #define PG_RETURN_INTERVAL_P(x) return IntervalPGetDatum(x) 00045 #else /* !HAVE_INT64_TIMESTAMP */ 00046 00047 #define DatumGetTimestamp(X) ((Timestamp) DatumGetFloat8(X)) 00048 #define DatumGetTimestampTz(X) ((TimestampTz) DatumGetFloat8(X)) 00049 #define DatumGetIntervalP(X) ((Interval *) DatumGetPointer(X)) 00050 00051 #define TimestampGetDatum(X) Float8GetDatum(X) 00052 #define TimestampTzGetDatum(X) Float8GetDatum(X) 00053 #define IntervalPGetDatum(X) PointerGetDatum(X) 00054 00055 #define PG_GETARG_TIMESTAMP(n) DatumGetTimestamp(PG_GETARG_DATUM(n)) 00056 #define PG_GETARG_TIMESTAMPTZ(n) DatumGetTimestampTz(PG_GETARG_DATUM(n)) 00057 #define PG_GETARG_INTERVAL_P(n) DatumGetIntervalP(PG_GETARG_DATUM(n)) 00058 00059 #define PG_RETURN_TIMESTAMP(x) return TimestampGetDatum(x) 00060 #define PG_RETURN_TIMESTAMPTZ(x) return TimestampTzGetDatum(x) 00061 #define PG_RETURN_INTERVAL_P(x) return IntervalPGetDatum(x) 00062 #endif /* HAVE_INT64_TIMESTAMP */ 00063 00064 00065 #define TIMESTAMP_MASK(b) (1 << (b)) 00066 #define INTERVAL_MASK(b) (1 << (b)) 00067 00068 /* Macros to handle packing and unpacking the typmod field for intervals */ 00069 #define INTERVAL_FULL_RANGE (0x7FFF) 00070 #define INTERVAL_RANGE_MASK (0x7FFF) 00071 #define INTERVAL_FULL_PRECISION (0xFFFF) 00072 #define INTERVAL_PRECISION_MASK (0xFFFF) 00073 #define INTERVAL_TYPMOD(p,r) ((((r) & INTERVAL_RANGE_MASK) << 16) | ((p) & INTERVAL_PRECISION_MASK)) 00074 #define INTERVAL_PRECISION(t) ((t) & INTERVAL_PRECISION_MASK) 00075 #define INTERVAL_RANGE(t) (((t) >> 16) & INTERVAL_RANGE_MASK) 00076 00077 #ifdef HAVE_INT64_TIMESTAMP 00078 #define TimestampTzPlusMilliseconds(tz,ms) ((tz) + ((ms) * (int64) 1000)) 00079 #else 00080 #define TimestampTzPlusMilliseconds(tz,ms) ((tz) + ((ms) / 1000.0)) 00081 #endif 00082 00083 00084 /* Set at postmaster start */ 00085 extern TimestampTz PgStartTime; 00086 00087 /* Set at configuration reload */ 00088 extern TimestampTz PgReloadTime; 00089 00090 00091 /* 00092 * timestamp.c prototypes 00093 */ 00094 00095 extern Datum timestamp_in(PG_FUNCTION_ARGS); 00096 extern Datum timestamp_out(PG_FUNCTION_ARGS); 00097 extern Datum timestamp_recv(PG_FUNCTION_ARGS); 00098 extern Datum timestamp_send(PG_FUNCTION_ARGS); 00099 extern Datum timestamptypmodin(PG_FUNCTION_ARGS); 00100 extern Datum timestamptypmodout(PG_FUNCTION_ARGS); 00101 extern Datum timestamp_transform(PG_FUNCTION_ARGS); 00102 extern Datum timestamp_scale(PG_FUNCTION_ARGS); 00103 extern Datum timestamp_eq(PG_FUNCTION_ARGS); 00104 extern Datum timestamp_ne(PG_FUNCTION_ARGS); 00105 extern Datum timestamp_lt(PG_FUNCTION_ARGS); 00106 extern Datum timestamp_le(PG_FUNCTION_ARGS); 00107 extern Datum timestamp_ge(PG_FUNCTION_ARGS); 00108 extern Datum timestamp_gt(PG_FUNCTION_ARGS); 00109 extern Datum timestamp_finite(PG_FUNCTION_ARGS); 00110 extern Datum timestamp_cmp(PG_FUNCTION_ARGS); 00111 extern Datum timestamp_sortsupport(PG_FUNCTION_ARGS); 00112 extern Datum timestamp_hash(PG_FUNCTION_ARGS); 00113 extern Datum timestamp_smaller(PG_FUNCTION_ARGS); 00114 extern Datum timestamp_larger(PG_FUNCTION_ARGS); 00115 00116 extern Datum timestamp_eq_timestamptz(PG_FUNCTION_ARGS); 00117 extern Datum timestamp_ne_timestamptz(PG_FUNCTION_ARGS); 00118 extern Datum timestamp_lt_timestamptz(PG_FUNCTION_ARGS); 00119 extern Datum timestamp_le_timestamptz(PG_FUNCTION_ARGS); 00120 extern Datum timestamp_gt_timestamptz(PG_FUNCTION_ARGS); 00121 extern Datum timestamp_ge_timestamptz(PG_FUNCTION_ARGS); 00122 extern Datum timestamp_cmp_timestamptz(PG_FUNCTION_ARGS); 00123 00124 extern Datum timestamptz_eq_timestamp(PG_FUNCTION_ARGS); 00125 extern Datum timestamptz_ne_timestamp(PG_FUNCTION_ARGS); 00126 extern Datum timestamptz_lt_timestamp(PG_FUNCTION_ARGS); 00127 extern Datum timestamptz_le_timestamp(PG_FUNCTION_ARGS); 00128 extern Datum timestamptz_gt_timestamp(PG_FUNCTION_ARGS); 00129 extern Datum timestamptz_ge_timestamp(PG_FUNCTION_ARGS); 00130 extern Datum timestamptz_cmp_timestamp(PG_FUNCTION_ARGS); 00131 00132 extern Datum interval_in(PG_FUNCTION_ARGS); 00133 extern Datum interval_out(PG_FUNCTION_ARGS); 00134 extern Datum interval_recv(PG_FUNCTION_ARGS); 00135 extern Datum interval_send(PG_FUNCTION_ARGS); 00136 extern Datum intervaltypmodin(PG_FUNCTION_ARGS); 00137 extern Datum intervaltypmodout(PG_FUNCTION_ARGS); 00138 extern Datum interval_transform(PG_FUNCTION_ARGS); 00139 extern Datum interval_scale(PG_FUNCTION_ARGS); 00140 extern Datum interval_eq(PG_FUNCTION_ARGS); 00141 extern Datum interval_ne(PG_FUNCTION_ARGS); 00142 extern Datum interval_lt(PG_FUNCTION_ARGS); 00143 extern Datum interval_le(PG_FUNCTION_ARGS); 00144 extern Datum interval_ge(PG_FUNCTION_ARGS); 00145 extern Datum interval_gt(PG_FUNCTION_ARGS); 00146 extern Datum interval_finite(PG_FUNCTION_ARGS); 00147 extern Datum interval_cmp(PG_FUNCTION_ARGS); 00148 extern Datum interval_hash(PG_FUNCTION_ARGS); 00149 extern Datum interval_smaller(PG_FUNCTION_ARGS); 00150 extern Datum interval_larger(PG_FUNCTION_ARGS); 00151 extern Datum interval_justify_interval(PG_FUNCTION_ARGS); 00152 extern Datum interval_justify_hours(PG_FUNCTION_ARGS); 00153 extern Datum interval_justify_days(PG_FUNCTION_ARGS); 00154 00155 extern Datum timestamp_trunc(PG_FUNCTION_ARGS); 00156 extern Datum interval_trunc(PG_FUNCTION_ARGS); 00157 extern Datum timestamp_part(PG_FUNCTION_ARGS); 00158 extern Datum interval_part(PG_FUNCTION_ARGS); 00159 extern Datum timestamp_zone(PG_FUNCTION_ARGS); 00160 extern Datum timestamp_izone(PG_FUNCTION_ARGS); 00161 extern Datum timestamp_timestamptz(PG_FUNCTION_ARGS); 00162 00163 extern Datum timestamptz_in(PG_FUNCTION_ARGS); 00164 extern Datum timestamptz_out(PG_FUNCTION_ARGS); 00165 extern Datum timestamptz_recv(PG_FUNCTION_ARGS); 00166 extern Datum timestamptz_send(PG_FUNCTION_ARGS); 00167 extern Datum timestamptztypmodin(PG_FUNCTION_ARGS); 00168 extern Datum timestamptztypmodout(PG_FUNCTION_ARGS); 00169 extern Datum timestamptz_scale(PG_FUNCTION_ARGS); 00170 extern Datum timestamptz_timestamp(PG_FUNCTION_ARGS); 00171 extern Datum timestamptz_zone(PG_FUNCTION_ARGS); 00172 extern Datum timestamptz_izone(PG_FUNCTION_ARGS); 00173 extern Datum timestamptz_timestamptz(PG_FUNCTION_ARGS); 00174 00175 extern Datum interval_um(PG_FUNCTION_ARGS); 00176 extern Datum interval_pl(PG_FUNCTION_ARGS); 00177 extern Datum interval_mi(PG_FUNCTION_ARGS); 00178 extern Datum interval_mul(PG_FUNCTION_ARGS); 00179 extern Datum mul_d_interval(PG_FUNCTION_ARGS); 00180 extern Datum interval_div(PG_FUNCTION_ARGS); 00181 extern Datum interval_accum(PG_FUNCTION_ARGS); 00182 extern Datum interval_avg(PG_FUNCTION_ARGS); 00183 00184 extern Datum timestamp_mi(PG_FUNCTION_ARGS); 00185 extern Datum timestamp_pl_interval(PG_FUNCTION_ARGS); 00186 extern Datum timestamp_mi_interval(PG_FUNCTION_ARGS); 00187 extern Datum timestamp_age(PG_FUNCTION_ARGS); 00188 extern Datum overlaps_timestamp(PG_FUNCTION_ARGS); 00189 00190 extern Datum timestamptz_pl_interval(PG_FUNCTION_ARGS); 00191 extern Datum timestamptz_mi_interval(PG_FUNCTION_ARGS); 00192 extern Datum timestamptz_age(PG_FUNCTION_ARGS); 00193 extern Datum timestamptz_trunc(PG_FUNCTION_ARGS); 00194 extern Datum timestamptz_part(PG_FUNCTION_ARGS); 00195 00196 extern Datum now(PG_FUNCTION_ARGS); 00197 extern Datum statement_timestamp(PG_FUNCTION_ARGS); 00198 extern Datum clock_timestamp(PG_FUNCTION_ARGS); 00199 00200 extern Datum pg_postmaster_start_time(PG_FUNCTION_ARGS); 00201 extern Datum pg_conf_load_time(PG_FUNCTION_ARGS); 00202 00203 extern Datum generate_series_timestamp(PG_FUNCTION_ARGS); 00204 extern Datum generate_series_timestamptz(PG_FUNCTION_ARGS); 00205 00206 /* Internal routines (not fmgr-callable) */ 00207 00208 extern TimestampTz GetCurrentTimestamp(void); 00209 extern void TimestampDifference(TimestampTz start_time, TimestampTz stop_time, 00210 long *secs, int *microsecs); 00211 extern bool TimestampDifferenceExceeds(TimestampTz start_time, 00212 TimestampTz stop_time, 00213 int msec); 00214 00215 /* 00216 * Prototypes for functions to deal with integer timestamps, when the native 00217 * format is float timestamps. 00218 */ 00219 #ifndef HAVE_INT64_TIMESTAMP 00220 extern int64 GetCurrentIntegerTimestamp(void); 00221 extern TimestampTz IntegerTimestampToTimestampTz(int64 timestamp); 00222 #else 00223 #define GetCurrentIntegerTimestamp() GetCurrentTimestamp() 00224 #define IntegerTimestampToTimestampTz(timestamp) (timestamp) 00225 #endif 00226 00227 extern TimestampTz time_t_to_timestamptz(pg_time_t tm); 00228 extern pg_time_t timestamptz_to_time_t(TimestampTz t); 00229 00230 extern const char *timestamptz_to_str(TimestampTz t); 00231 00232 extern int tm2timestamp(struct pg_tm * tm, fsec_t fsec, int *tzp, Timestamp *dt); 00233 extern int timestamp2tm(Timestamp dt, int *tzp, struct pg_tm * tm, 00234 fsec_t *fsec, const char **tzn, pg_tz *attimezone); 00235 extern void dt2time(Timestamp dt, int *hour, int *min, int *sec, fsec_t *fsec); 00236 00237 extern int interval2tm(Interval span, struct pg_tm * tm, fsec_t *fsec); 00238 extern int tm2interval(struct pg_tm * tm, fsec_t fsec, Interval *span); 00239 00240 extern Timestamp SetEpochTimestamp(void); 00241 extern void GetEpochTime(struct pg_tm * tm); 00242 00243 extern int timestamp_cmp_internal(Timestamp dt1, Timestamp dt2); 00244 00245 /* timestamp comparison works for timestamptz also */ 00246 #define timestamptz_cmp_internal(dt1,dt2) timestamp_cmp_internal(dt1, dt2) 00247 00248 extern int isoweek2j(int year, int week); 00249 extern void isoweek2date(int woy, int *year, int *mon, int *mday); 00250 extern void isoweekdate2date(int isoweek, int wday, int *year, int *mon, int *mday); 00251 extern int date2isoweek(int year, int mon, int mday); 00252 extern int date2isoyear(int year, int mon, int mday); 00253 extern int date2isoyearday(int year, int mon, int mday); 00254 00255 #endif /* TIMESTAMP_H */
1.7.1