197 lines
5.4 KiB
C
197 lines
5.4 KiB
C
#ifndef __CORE_TIME_H__
|
|
#define __CORE_TIME_H__
|
|
|
|
/**
|
|
* @file core_time.h
|
|
* @brief CORE Time Library
|
|
*/
|
|
|
|
#include "core.h"
|
|
#include "core_errno.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif /* __cplusplus */
|
|
|
|
/**
|
|
* @defgroup core_time Time Routines
|
|
* @ingroup CORE
|
|
* @{
|
|
*/
|
|
|
|
/** month names */
|
|
CORE_DECLARE_DATA extern const char month_snames[12][4];
|
|
/** day names */
|
|
CORE_DECLARE_DATA extern const char day_snames[7][4];
|
|
|
|
/** number of microseconds since 00:00:00 january 1, 1970 UTC */
|
|
typedef c_int64_t c_time_t;
|
|
|
|
/** mechanism to properly type c_time_t literals */
|
|
#define TIME_C(val) INT64_C(val)
|
|
|
|
/** mechanism to properly print c_time_t values */
|
|
#define TIME_T_FMT INT64_T_FMT
|
|
|
|
/** number of microseconds per second */
|
|
#define USEC_PER_SEC TIME_C(1000000)
|
|
|
|
/** @return c_time_t as a second */
|
|
#define time_sec(time) ((time) / USEC_PER_SEC)
|
|
|
|
/** @return c_time_t as a usec */
|
|
#define time_usec(time) ((time) % USEC_PER_SEC)
|
|
|
|
/** @return c_time_t as a msec */
|
|
#define time_msec(time) (((time) / 1000) % 1000)
|
|
|
|
/** @return c_time_t as a msec */
|
|
#define time_as_msec(time) ((time) / 1000)
|
|
|
|
/** @return milliseconds as an c_time_t */
|
|
#define time_from_msec(msec) ((c_time_t)(msec) * 1000)
|
|
|
|
/** @return seconds as an c_time_t */
|
|
#define time_from_sec(sec) ((c_time_t)(sec) * USEC_PER_SEC)
|
|
|
|
/** @return a second and usec combination as an c_time_t */
|
|
#define time_make(sec, usec) ((c_time_t)(sec) * USEC_PER_SEC \
|
|
+ (c_time_t)(usec))
|
|
/** @see time_exp_t */
|
|
typedef struct time_exp_t time_exp_t;
|
|
|
|
/**
|
|
* a structure similar to ANSI struct tm with the following differences:
|
|
* - tm_usec isn't an ANSI field
|
|
* - tm_gmtoff isn't an ANSI field (it's a bsdism)
|
|
*/
|
|
struct time_exp_t {
|
|
/** microseconds past tm_sec */
|
|
int32_t tm_usec;
|
|
/** (0-61) seconds past tm_min */
|
|
int32_t tm_sec;
|
|
/** (0-59) minutes past tm_hour */
|
|
int32_t tm_min;
|
|
/** (0-23) hours past midnight */
|
|
int32_t tm_hour;
|
|
/** (1-31) day of the month */
|
|
int32_t tm_mday;
|
|
/** (0-11) month of the year */
|
|
int32_t tm_mon;
|
|
/** year since 1900 */
|
|
int32_t tm_year;
|
|
/** (0-6) days since sunday */
|
|
int32_t tm_wday;
|
|
/** (0-365) days since jan 1 */
|
|
int32_t tm_yday;
|
|
/** daylight saving time */
|
|
int32_t tm_isdst;
|
|
/** seconds east of UTC */
|
|
int32_t tm_gmtoff;
|
|
};
|
|
|
|
/**
|
|
* @return the current time
|
|
*/
|
|
CORE_DECLARE(c_time_t) time_now(void);
|
|
|
|
/**
|
|
* Sleep for the specified number of micro-seconds.
|
|
* @param t desired amount of time to sleep.
|
|
* @warning May sleep for longer than the specified time.
|
|
*/
|
|
CORE_DECLARE(void) core_sleep(c_time_t t);
|
|
|
|
/**
|
|
* convert an ansi time_t to an c_time_t
|
|
* @param result the resulting c_time_t
|
|
* @param input the time_t to convert
|
|
*/
|
|
CORE_DECLARE(status_t) time_ansi_put(c_time_t *result, time_t input);
|
|
|
|
/**
|
|
* convert a time to its human readable components using an offset
|
|
* from GMT
|
|
* @param result the exploded time
|
|
* @param input the time to explode
|
|
* @param offs the number of seconds offset to apply
|
|
*/
|
|
CORE_DECLARE(status_t) time_exp_tz(time_exp_t *result,
|
|
c_time_t input, int32_t offs);
|
|
|
|
/**
|
|
* convert a time to its human readable components in GMT timezone
|
|
* @param result the exploded time
|
|
* @param input the time to explode
|
|
*/
|
|
CORE_DECLARE(status_t) time_exp_gmt(time_exp_t *result, c_time_t input);
|
|
|
|
/**
|
|
* convert a time to its human readable components in local timezone
|
|
* @param result the exploded time
|
|
* @param input the time to explode
|
|
*/
|
|
CORE_DECLARE(status_t) time_exp_lt(time_exp_t *result, c_time_t input);
|
|
|
|
/**
|
|
* Convert time value from human readable format to a numeric c_time_t
|
|
* e.g. elapsed usec since epoch
|
|
* @param result the resulting imploded time
|
|
* @param input the input exploded time
|
|
*/
|
|
CORE_DECLARE(status_t) time_exp_get(c_time_t *result, time_exp_t *input);
|
|
|
|
/**
|
|
* Convert time value from human readable format to a numeric c_time_t that
|
|
* always represents GMT
|
|
* @param result the resulting imploded time
|
|
* @param input the input exploded time
|
|
*/
|
|
CORE_DECLARE(status_t) time_exp_gmt_get(c_time_t *result, time_exp_t *input);
|
|
|
|
/** length of a RFC822 Date */
|
|
#define APR_RFC822_DATE_LEN (30)
|
|
/**
|
|
* rfc822_date formats dates in the RFC822
|
|
* format in an efficient manner. It is a fixed length
|
|
* format which requires the indicated amount of storage,
|
|
* including the trailing NUL terminator.
|
|
* @param date_str String to write to.
|
|
* @param t the time to convert
|
|
*/
|
|
CORE_DECLARE(status_t) rfc822_date(char *date_str, c_time_t t);
|
|
|
|
/** length of a CTIME date */
|
|
#define CTIME_LEN (25)
|
|
/**
|
|
* ctime formats dates in the ctime() format
|
|
* in an efficient manner. it is a fixed length format
|
|
* and requires the indicated amount of storage including
|
|
* the trailing NUL terminator.
|
|
* Unlike ANSI/ISO C ctime(), ctime() does not include
|
|
* a \n at the end of the string.
|
|
* @param date_str String to write to.
|
|
* @param t the time to convert
|
|
*/
|
|
CORE_DECLARE(status_t) core_ctime(char *date_str, c_time_t t);
|
|
|
|
/**
|
|
* formats the exploded time according to the format specified
|
|
* @param s string to write to
|
|
* @param retsize The length of the returned string
|
|
* @param max The maximum length of the string
|
|
* @param format The format for the time string
|
|
* @param tm The time to convert
|
|
*/
|
|
CORE_DECLARE(status_t) core_strftime(char *s, size_t *retsize,
|
|
size_t max, const char *format,
|
|
time_exp_t *tm);
|
|
|
|
/** @} */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif /* __cplusplus */
|
|
|
|
#endif /* ! __CORE_TIME_H__ */
|