73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/* -------------------------------------------------------------------------
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*
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* pgtime.h
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* openGauss internal timezone library
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*
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* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
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*
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* IDENTIFICATION
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* src/include/pgtime.h
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef _PGTIME_H
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#define _PGTIME_H
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#include "gs_threadlocal.h"
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/*
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* The API of this library is generally similar to the corresponding
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* C library functions, except that we use pg_time_t which (we hope) is
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* 64 bits wide, and which is most definitely signed not unsigned.
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*/
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typedef int64 pg_time_t;
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struct pg_tm {
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int tm_sec;
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int tm_min;
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int tm_hour;
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int tm_mday;
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int tm_mon; /* origin 0, not 1 */
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int tm_year; /* relative to 1900 */
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int tm_wday;
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int tm_yday;
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int tm_isdst;
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long int tm_gmtoff;
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const char* tm_zone;
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};
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typedef struct pg_tz pg_tz;
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typedef struct pg_tzenum pg_tzenum;
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/* Maximum length of a timezone name (not including trailing null) */
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#define TZ_STRLEN_MAX 255
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/* these functions are in localtime.c */
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extern struct pg_tm* pg_localtime_s(const pg_time_t* timep, struct pg_tm* tmp, const pg_tz* tz);
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extern struct pg_tm* pg_localtime(const pg_time_t* timep, const pg_tz* tz);
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extern struct pg_tm* pg_gmtime(const pg_time_t* timep);
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extern int pg_next_dst_boundary(const pg_time_t* timep, long int* before_gmtoff, int* before_isdst, pg_time_t* boundary,
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long int* after_gmtoff, int* after_isdst, const pg_tz* tz);
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extern size_t pg_strftime(char* s, size_t max, const char* format, const struct pg_tm* tm);
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extern bool pg_get_timezone_offset(const pg_tz* tz, long int* gmtoff);
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extern const char* pg_get_timezone_name(pg_tz* tz);
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extern const char* pg_get_abbrevs_name(pg_time_t* timep, pg_tz* tz);
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extern bool pg_tz_acceptable(pg_tz* tz);
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/* these functions and variables are in pgtz.c */
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extern THR_LOCAL pg_tz* session_timezone;
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extern THR_LOCAL pg_tz* log_timezone;
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extern void pg_timezone_initialize(void);
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extern pg_tz* pg_tzset(const char* tzname);
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extern pg_tzenum* pg_tzenumerate_start(void);
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extern pg_tz* pg_tzenumerate_next(pg_tzenum* dir);
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extern void pg_tzenumerate_end(pg_tzenum* dir);
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#endif /* _PGTIME_H */
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