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89d80c1b0b
Define my_thread_id as an unsigned type, to avoid mismatch with ulonglong. Change some parameters to this type. Use size_t in a few more places. Declare many flag constants as unsigned to avoid sign mismatch when shifting bits or applying the unary ~ operator. When applying the unary ~ operator to enum constants, explictly cast the result to an unsigned type, because enum constants can be treated as signed. In InnoDB, change the source code line number parameters from ulint to unsigned type. Also, make some InnoDB functions return a narrower type (unsigned or uint32_t instead of ulint; bool instead of ibool).
256 lines
8.6 KiB
C
256 lines
8.6 KiB
C
/*
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Copyright (c) 2004, 2011, Oracle and/or its affiliates.
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Copyright (c) 2017, Monty Program Ab.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/*
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This is a private header of sql-common library, containing
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declarations for my_time.c
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*/
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#ifndef _my_time_h_
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#define _my_time_h_
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#include "my_global.h"
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#include "mysql_time.h"
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#include "my_decimal_limits.h"
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C_MODE_START
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extern ulonglong log_10_int[20];
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extern uchar days_in_month[];
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#define MY_TIME_T_MAX LONG_MAX
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#define MY_TIME_T_MIN LONG_MIN
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/* Time handling defaults */
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#define TIMESTAMP_MAX_YEAR 2038
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#define TIMESTAMP_MIN_YEAR (1900 + YY_PART_YEAR - 1)
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#define TIMESTAMP_MAX_VALUE INT_MAX32
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#define TIMESTAMP_MIN_VALUE 0
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/* two-digit years < this are 20..; >= this are 19.. */
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#define YY_PART_YEAR 70
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/*
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check for valid times only if the range of time_t is greater than
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the range of my_time_t
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*/
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#if SIZEOF_TIME_T > 4 || defined(TIME_T_UNSIGNED)
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# define IS_TIME_T_VALID_FOR_TIMESTAMP(x) \
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((x) <= TIMESTAMP_MAX_VALUE && \
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(x) >= TIMESTAMP_MIN_VALUE)
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#else
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# define IS_TIME_T_VALID_FOR_TIMESTAMP(x) \
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((x) >= TIMESTAMP_MIN_VALUE)
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#endif
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/* Flags to str_to_datetime */
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/*
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TIME_FUZZY_DATES is used for the result will only be used for comparison
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purposes. Conversion is as relaxed as possible.
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*/
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#define TIME_FUZZY_DATES 1U
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#define TIME_DATETIME_ONLY 2U
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#define TIME_TIME_ONLY 4U
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#define TIME_NO_ZERO_IN_DATE (1UL << 23) /* == MODE_NO_ZERO_IN_DATE */
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#define TIME_NO_ZERO_DATE (1UL << 24) /* == MODE_NO_ZERO_DATE */
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#define TIME_INVALID_DATES (1UL << 25) /* == MODE_INVALID_DATES */
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#define MYSQL_TIME_WARN_TRUNCATED 1U
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#define MYSQL_TIME_WARN_OUT_OF_RANGE 2U
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#define MYSQL_TIME_NOTE_TRUNCATED 16U
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#define MYSQL_TIME_WARN_WARNINGS (MYSQL_TIME_WARN_TRUNCATED|MYSQL_TIME_WARN_OUT_OF_RANGE)
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#define MYSQL_TIME_WARN_NOTES (MYSQL_TIME_NOTE_TRUNCATED)
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#define MYSQL_TIME_WARN_HAVE_WARNINGS(x) MY_TEST((x) & MYSQL_TIME_WARN_WARNINGS)
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#define MYSQL_TIME_WARN_HAVE_NOTES(x) MY_TEST((x) & MYSQL_TIME_WARN_NOTES)
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/* Usefull constants */
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#define SECONDS_IN_24H 86400L
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/* Limits for the TIME data type */
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#define TIME_MAX_HOUR 838
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#define TIME_MAX_MINUTE 59
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#define TIME_MAX_SECOND 59
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#define TIME_MAX_SECOND_PART 999999
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#define TIME_SECOND_PART_FACTOR (TIME_MAX_SECOND_PART+1)
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#define TIME_SECOND_PART_DIGITS 6
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#define TIME_MAX_VALUE (TIME_MAX_HOUR*10000 + TIME_MAX_MINUTE*100 + TIME_MAX_SECOND)
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#define TIME_MAX_VALUE_SECONDS (TIME_MAX_HOUR * 3600L + \
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TIME_MAX_MINUTE * 60L + TIME_MAX_SECOND)
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/*
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Structure to return status from
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str_to_datetime(), str_to_time().
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*/
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typedef struct st_mysql_time_status
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{
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int warnings;
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uint precision;
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} MYSQL_TIME_STATUS;
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static inline void my_time_status_init(MYSQL_TIME_STATUS *status)
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{
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status->warnings= status->precision= 0;
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}
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my_bool check_date(const MYSQL_TIME *ltime, my_bool not_zero_date,
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ulonglong flags, int *was_cut);
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my_bool str_to_time(const char *str, uint length, MYSQL_TIME *l_time,
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ulonglong flag, MYSQL_TIME_STATUS *status);
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my_bool str_to_datetime(const char *str, uint length, MYSQL_TIME *l_time,
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ulonglong flags, MYSQL_TIME_STATUS *status);
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longlong number_to_datetime(longlong nr, ulong sec_part, MYSQL_TIME *time_res,
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ulonglong flags, int *was_cut);
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static inline
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longlong double_to_datetime(double nr, MYSQL_TIME *ltime, uint flags, int *cut)
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{
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if (nr < 0 || nr > LONGLONG_MAX)
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nr= (double)LONGLONG_MAX;
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return number_to_datetime((longlong) floor(nr),
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(ulong)((nr-floor(nr))*TIME_SECOND_PART_FACTOR),
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ltime, flags, cut);
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}
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int number_to_time(my_bool neg, ulonglong nr, ulong sec_part,
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MYSQL_TIME *ltime, int *was_cut);
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ulonglong TIME_to_ulonglong_datetime(const MYSQL_TIME *);
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ulonglong TIME_to_ulonglong_date(const MYSQL_TIME *);
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ulonglong TIME_to_ulonglong_time(const MYSQL_TIME *);
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ulonglong TIME_to_ulonglong(const MYSQL_TIME *);
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double TIME_to_double(const MYSQL_TIME *my_time);
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longlong pack_time(const MYSQL_TIME *my_time);
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MYSQL_TIME *unpack_time(longlong packed, MYSQL_TIME *my_time);
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int check_time_range(struct st_mysql_time *my_time, uint dec, int *warning);
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my_bool check_datetime_range(const MYSQL_TIME *ltime);
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long calc_daynr(uint year,uint month,uint day);
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uint calc_days_in_year(uint year);
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uint year_2000_handling(uint year);
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void my_init_time(void);
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/*
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Function to check sanity of a TIMESTAMP value
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DESCRIPTION
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Check if a given MYSQL_TIME value fits in TIMESTAMP range.
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This function doesn't make precise check, but rather a rough
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estimate.
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RETURN VALUES
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TRUE The value seems sane
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FALSE The MYSQL_TIME value is definitely out of range
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*/
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static inline my_bool validate_timestamp_range(const MYSQL_TIME *t)
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{
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if ((t->year > TIMESTAMP_MAX_YEAR || t->year < TIMESTAMP_MIN_YEAR) ||
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(t->year == TIMESTAMP_MAX_YEAR && (t->month > 1 || t->day > 19)) ||
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(t->year == TIMESTAMP_MIN_YEAR && (t->month < 12 || t->day < 31)))
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return FALSE;
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return TRUE;
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}
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/* Can't include mysqld_error.h, it needs mysys to build, thus hardcode 2 error values here. */
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#define ER_WARN_DATA_OUT_OF_RANGE 1264
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#define ER_WARN_INVALID_TIMESTAMP 1299
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my_time_t
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my_system_gmt_sec(const MYSQL_TIME *t, long *my_timezone, uint *error_code);
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void set_zero_time(MYSQL_TIME *tm, enum enum_mysql_timestamp_type time_type);
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/*
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Required buffer length for my_time_to_str, my_date_to_str,
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my_datetime_to_str and TIME_to_string functions. Note, that the
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caller is still responsible to check that given TIME structure
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has values in valid ranges, otherwise size of the buffer could
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be not enough. We also rely on the fact that even wrong values
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sent using binary protocol fit in this buffer.
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*/
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#define MAX_DATE_STRING_REP_LENGTH 30
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#define AUTO_SEC_PART_DIGITS DECIMAL_NOT_SPECIFIED
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int my_time_to_str(const MYSQL_TIME *l_time, char *to, uint digits);
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int my_date_to_str(const MYSQL_TIME *l_time, char *to);
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int my_datetime_to_str(const MYSQL_TIME *l_time, char *to, uint digits);
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int my_TIME_to_str(const MYSQL_TIME *l_time, char *to, uint digits);
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int my_timeval_to_str(const struct timeval *tm, char *to, uint dec);
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static inline longlong sec_part_shift(longlong second_part, uint digits)
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{
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return second_part / (longlong)log_10_int[TIME_SECOND_PART_DIGITS - digits];
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}
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static inline longlong sec_part_unshift(longlong second_part, uint digits)
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{
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return second_part * (longlong)log_10_int[TIME_SECOND_PART_DIGITS - digits];
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}
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/* Date/time rounding and truncation functions */
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static inline long my_time_fraction_remainder(long nr, uint decimals)
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{
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DBUG_ASSERT(decimals <= TIME_SECOND_PART_DIGITS);
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return nr % (long) log_10_int[TIME_SECOND_PART_DIGITS - decimals];
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}
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static inline void my_time_trunc(MYSQL_TIME *ltime, uint decimals)
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{
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ltime->second_part-= my_time_fraction_remainder(ltime->second_part, decimals);
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}
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static inline void my_timeval_trunc(struct timeval *tv, uint decimals)
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{
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tv->tv_usec-= my_time_fraction_remainder(tv->tv_usec, decimals);
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}
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#define hrtime_to_my_time(X) ((my_time_t)hrtime_to_time(X))
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/*
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Available interval types used in any statement.
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'interval_type' must be sorted so that simple intervals comes first,
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ie year, quarter, month, week, day, hour, etc. The order based on
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interval size is also important and the intervals should be kept in a
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large to smaller order. (get_interval_value() depends on this)
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Note: If you change the order of elements in this enum you should fix
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order of elements in 'interval_type_to_name' and 'interval_names'
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arrays
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See also interval_type_to_name, get_interval_value, interval_names
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*/
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enum interval_type
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{
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INTERVAL_YEAR, INTERVAL_QUARTER, INTERVAL_MONTH, INTERVAL_WEEK, INTERVAL_DAY,
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INTERVAL_HOUR, INTERVAL_MINUTE, INTERVAL_SECOND, INTERVAL_MICROSECOND,
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INTERVAL_YEAR_MONTH, INTERVAL_DAY_HOUR, INTERVAL_DAY_MINUTE,
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INTERVAL_DAY_SECOND, INTERVAL_HOUR_MINUTE, INTERVAL_HOUR_SECOND,
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INTERVAL_MINUTE_SECOND, INTERVAL_DAY_MICROSECOND, INTERVAL_HOUR_MICROSECOND,
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INTERVAL_MINUTE_MICROSECOND, INTERVAL_SECOND_MICROSECOND, INTERVAL_LAST
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};
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C_MODE_END
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#endif /* _my_time_h_ */
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