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usr/include/bind9/isc/time.h 0000644 00000021254 15051121265 0011674 0 ustar 00 /*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#ifndef ISC_TIME_H
#define ISC_TIME_H 1
/*! \file */
#include <inttypes.h>
#include <stdbool.h>
#include <isc/lang.h>
#include <isc/types.h>
/***
*** Intervals
***/
/*!
* \brief
* The contents of this structure are private, and MUST NOT be accessed
* directly by callers.
*
* The contents are exposed only to allow callers to avoid dynamic allocation.
*/
struct isc_interval {
unsigned int seconds;
unsigned int nanoseconds;
};
extern const isc_interval_t * const isc_interval_zero;
/*
* ISC_FORMATHTTPTIMESTAMP_SIZE needs to be 30 in C locale and potentially
* more for other locales to handle longer national abbreviations when
* expanding strftime's %a and %b.
*/
#define ISC_FORMATHTTPTIMESTAMP_SIZE 50
ISC_LANG_BEGINDECLS
void
isc_interval_set(isc_interval_t *i,
unsigned int seconds, unsigned int nanoseconds);
/*%<
* Set 'i' to a value representing an interval of 'seconds' seconds and
* 'nanoseconds' nanoseconds, suitable for use in isc_time_add() and
* isc_time_subtract().
*
* Requires:
*
*\li 't' is a valid pointer.
*\li nanoseconds < 1000000000.
*/
bool
isc_interval_iszero(const isc_interval_t *i);
/*%<
* Returns true iff. 'i' is the zero interval.
*
* Requires:
*
*\li 'i' is a valid pointer.
*/
/***
*** Absolute Times
***/
/*%
* The contents of this structure are private, and MUST NOT be accessed
* directly by callers.
*
* The contents are exposed only to allow callers to avoid dynamic allocation.
*/
struct isc_time {
unsigned int seconds;
unsigned int nanoseconds;
};
extern const isc_time_t * const isc_time_epoch;
void
isc_time_set(isc_time_t *t, unsigned int seconds, unsigned int nanoseconds);
/*%<
* Set 't' to a value which represents the given number of seconds and
* nanoseconds since 00:00:00 January 1, 1970, UTC.
*
* Notes:
*\li The Unix version of this call is equivalent to:
*\code
* isc_time_settoepoch(t);
* isc_interval_set(i, seconds, nanoseconds);
* isc_time_add(t, i, t);
*\endcode
*
* Requires:
*\li 't' is a valid pointer.
*\li nanoseconds < 1000000000.
*/
void
isc_time_settoepoch(isc_time_t *t);
/*%<
* Set 't' to the time of the epoch.
*
* Notes:
*\li The date of the epoch is platform-dependent.
*
* Requires:
*
*\li 't' is a valid pointer.
*/
bool
isc_time_isepoch(const isc_time_t *t);
/*%<
* Returns true iff. 't' is the epoch ("time zero").
*
* Requires:
*
*\li 't' is a valid pointer.
*/
#ifdef CLOCK_BOOTTIME
isc_result_t
isc_time_boottime(isc_time_t *t);
/*%<
* Set 't' to monotonic time from previous boot
* it's not affected by system time change. It also
* includes the time system was suspended
*
* Requires:
*\li 't' is a valid pointer.
*
* Returns:
*
*\li Success
*\li Unexpected error
* Getting the time from the system failed.
*/
#endif /* CLOCK_BOOTTIME */
isc_result_t
isc_time_now(isc_time_t *t);
/*%<
* Set 't' to the current absolute time.
*
* Requires:
*
*\li 't' is a valid pointer.
*
* Returns:
*
*\li Success
*\li Unexpected error
* Getting the time from the system failed.
*\li Out of range
* The time from the system is too large to be represented
* in the current definition of isc_time_t.
*/
isc_result_t
isc_time_nowplusinterval(isc_time_t *t, const isc_interval_t *i);
/*%<
* Set *t to the current absolute time + i.
*
* Note:
*\li This call is equivalent to:
*
*\code
* isc_time_now(t);
* isc_time_add(t, i, t);
*\endcode
*
* Requires:
*
*\li 't' and 'i' are valid pointers.
*
* Returns:
*
*\li Success
*\li Unexpected error
* Getting the time from the system failed.
*\li Out of range
* The interval added to the time from the system is too large to
* be represented in the current definition of isc_time_t.
*/
int
isc_time_compare(const isc_time_t *t1, const isc_time_t *t2);
/*%<
* Compare the times referenced by 't1' and 't2'
*
* Requires:
*
*\li 't1' and 't2' are valid pointers.
*
* Returns:
*
*\li -1 t1 < t2 (comparing times, not pointers)
*\li 0 t1 = t2
*\li 1 t1 > t2
*/
isc_result_t
isc_time_add(const isc_time_t *t, const isc_interval_t *i, isc_time_t *result);
/*%<
* Add 'i' to 't', storing the result in 'result'.
*
* Requires:
*
*\li 't', 'i', and 'result' are valid pointers.
*
* Returns:
*\li Success
*\li Out of range
* The interval added to the time is too large to
* be represented in the current definition of isc_time_t.
*/
isc_result_t
isc_time_subtract(const isc_time_t *t, const isc_interval_t *i,
isc_time_t *result);
/*%<
* Subtract 'i' from 't', storing the result in 'result'.
*
* Requires:
*
*\li 't', 'i', and 'result' are valid pointers.
*
* Returns:
*\li Success
*\li Out of range
* The interval is larger than the time since the epoch.
*/
uint64_t
isc_time_microdiff(const isc_time_t *t1, const isc_time_t *t2);
/*%<
* Find the difference in microseconds between time t1 and time t2.
* t2 is the subtrahend of t1; ie, difference = t1 - t2.
*
* Requires:
*
*\li 't1' and 't2' are valid pointers.
*
* Returns:
*\li The difference of t1 - t2, or 0 if t1 <= t2.
*/
uint32_t
isc_time_seconds(const isc_time_t *t);
/*%<
* Return the number of seconds since the epoch stored in a time structure.
*
* Requires:
*
*\li 't' is a valid pointer.
*/
isc_result_t
isc_time_secondsastimet(const isc_time_t *t, time_t *secondsp);
/*%<
* Ensure the number of seconds in an isc_time_t is representable by a time_t.
*
* Notes:
*\li The number of seconds stored in an isc_time_t might be larger
* than the number of seconds a time_t is able to handle. Since
* time_t is mostly opaque according to the ANSI/ISO standard
* (essentially, all you can be sure of is that it is an arithmetic type,
* not even necessarily integral), it can be tricky to ensure that
* the isc_time_t is in the range a time_t can handle. Use this
* function in place of isc_time_seconds() any time you need to set a
* time_t from an isc_time_t.
*
* Requires:
*\li 't' is a valid pointer.
*
* Returns:
*\li Success
*\li Out of range
*/
uint32_t
isc_time_nanoseconds(const isc_time_t *t);
/*%<
* Return the number of nanoseconds stored in a time structure.
*
* Notes:
*\li This is the number of nanoseconds in excess of the number
* of seconds since the epoch; it will always be less than one
* full second.
*
* Requires:
*\li 't' is a valid pointer.
*
* Ensures:
*\li The returned value is less than 1*10^9.
*/
void
isc_time_formattimestamp(const isc_time_t *t, char *buf, unsigned int len);
/*%<
* Format the time 't' into the buffer 'buf' of length 'len',
* using a format like "30-Aug-2000 04:06:47.997" and the local time zone.
* If the text does not fit in the buffer, the result is indeterminate,
* but is always guaranteed to be null terminated.
*
* Requires:
*\li 'len' > 0
*\li 'buf' points to an array of at least len chars
*
*/
void
isc_time_formathttptimestamp(const isc_time_t *t, char *buf, unsigned int len);
/*%<
* Format the time 't' into the buffer 'buf' of length 'len',
* using a format like "Mon, 30 Aug 2000 04:06:47 GMT"
* If the text does not fit in the buffer, the result is indeterminate,
* but is always guaranteed to be null terminated.
*
* Requires:
*\li 'len' > 0
*\li 'buf' points to an array of at least len chars
*
*/
isc_result_t
isc_time_parsehttptimestamp(char *input, isc_time_t *t);
/*%<
* Parse the time in 'input' into the isc_time_t pointed to by 't',
* expecting a format like "Mon, 30 Aug 2000 04:06:47 GMT"
*
* Requires:
*\li 'buf' and 't' are not NULL.
*/
void
isc_time_formatISO8601(const isc_time_t *t, char *buf, unsigned int len);
/*%<
* Format the time 't' into the buffer 'buf' of length 'len',
* using the ISO8601 format: "yyyy-mm-ddThh:mm:ssZ"
* If the text does not fit in the buffer, the result is indeterminate,
* but is always guaranteed to be null terminated.
*
* Requires:
*\li 'len' > 0
*\li 'buf' points to an array of at least len chars
*
*/
void
isc_time_formatISO8601ms(const isc_time_t *t, char *buf, unsigned int len);
/*%<
* Format the time 't' into the buffer 'buf' of length 'len',
* using the ISO8601 format: "yyyy-mm-ddThh:mm:ss.sssZ"
* If the text does not fit in the buffer, the result is indeterminate,
* but is always guaranteed to be null terminated.
*
* Requires:
*\li 'len' > 0
*\li 'buf' points to an array of at least len chars
*
*/
ISC_LANG_ENDDECLS
#endif /* ISC_TIME_H */
usr/include/bind9/dns/time.h 0000644 00000003237 15051133110 0011673 0 ustar 00 /*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#ifndef DNS_TIME_H
#define DNS_TIME_H 1
/*! \file dns/time.h */
/***
*** Imports
***/
#include <inttypes.h>
#include <isc/buffer.h>
#include <isc/lang.h>
ISC_LANG_BEGINDECLS
/***
*** Functions
***/
isc_result_t
dns_time64_fromtext(const char *source, int64_t *target);
/*%<
* Convert a date and time in YYYYMMDDHHMMSS text format at 'source'
* into to a 64-bit count of seconds since Jan 1 1970 0:00 GMT.
* Store the count at 'target'.
*/
isc_result_t
dns_time32_fromtext(const char *source, uint32_t *target);
/*%<
* Like dns_time64_fromtext, but returns the second count modulo 2^32
* as per RFC2535.
*/
isc_result_t
dns_time64_totext(int64_t value, isc_buffer_t *target);
/*%<
* Convert a 64-bit count of seconds since Jan 1 1970 0:00 GMT into
* a YYYYMMDDHHMMSS text representation and append it to 'target'.
*/
isc_result_t
dns_time32_totext(uint32_t value, isc_buffer_t *target);
/*%<
* Like dns_time64_totext, but for a 32-bit cyclic time value.
* Of those dates whose counts of seconds since Jan 1 1970 0:00 GMT
* are congruent with 'value' modulo 2^32, the one closest to the
* current date is chosen.
*/
int64_t
dns_time64_from32(uint32_t value);
/*%<
* Covert a 32-bit cyclic time value into a 64 bit time stamp.
*/
ISC_LANG_ENDDECLS
#endif /* DNS_TIME_H */
usr/include/time.h 0000644 00000024170 15051155656 0010124 0 ustar 00 /* Copyright (C) 1991-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/*
* ISO C99 Standard: 7.23 Date and time <time.h>
*/
#ifndef _TIME_H
#define _TIME_H 1
#include <features.h>
#define __need_size_t
#define __need_NULL
#include <stddef.h>
/* This defines CLOCKS_PER_SEC, which is the number of processor clock
ticks per second, and possibly a number of other constants. */
#include <bits/time.h>
/* Many of the typedefs and structs whose official home is this header
may also need to be defined by other headers. */
#include <bits/types/clock_t.h>
#include <bits/types/time_t.h>
#include <bits/types/struct_tm.h>
#if defined __USE_POSIX199309 || defined __USE_ISOC11
# include <bits/types/struct_timespec.h>
#endif
#ifdef __USE_POSIX199309
# include <bits/types/clockid_t.h>
# include <bits/types/timer_t.h>
# include <bits/types/struct_itimerspec.h>
struct sigevent;
#endif
#ifdef __USE_XOPEN2K
# ifndef __pid_t_defined
typedef __pid_t pid_t;
# define __pid_t_defined
# endif
#endif
#ifdef __USE_XOPEN2K8
# include <bits/types/locale_t.h>
#endif
#ifdef __USE_ISOC11
/* Time base values for timespec_get. */
# define TIME_UTC 1
#endif
__BEGIN_DECLS
/* Time used by the program so far (user time + system time).
The result / CLOCKS_PER_SEC is program time in seconds. */
extern clock_t clock (void) __THROW;
/* Return the current time and put it in *TIMER if TIMER is not NULL. */
extern time_t time (time_t *__timer) __THROW;
/* Return the difference between TIME1 and TIME0. */
extern double difftime (time_t __time1, time_t __time0)
__THROW __attribute__ ((__const__));
/* Return the `time_t' representation of TP and normalize TP. */
extern time_t mktime (struct tm *__tp) __THROW;
/* Format TP into S according to FORMAT.
Write no more than MAXSIZE characters and return the number
of characters written, or 0 if it would exceed MAXSIZE. */
extern size_t strftime (char *__restrict __s, size_t __maxsize,
const char *__restrict __format,
const struct tm *__restrict __tp) __THROW;
#ifdef __USE_XOPEN
/* Parse S according to FORMAT and store binary time information in TP.
The return value is a pointer to the first unparsed character in S. */
extern char *strptime (const char *__restrict __s,
const char *__restrict __fmt, struct tm *__tp)
__THROW;
#endif
#ifdef __USE_XOPEN2K8
/* Similar to the two functions above but take the information from
the provided locale and not the global locale. */
extern size_t strftime_l (char *__restrict __s, size_t __maxsize,
const char *__restrict __format,
const struct tm *__restrict __tp,
locale_t __loc) __THROW;
#endif
#ifdef __USE_GNU
extern char *strptime_l (const char *__restrict __s,
const char *__restrict __fmt, struct tm *__tp,
locale_t __loc) __THROW;
#endif
/* Return the `struct tm' representation of *TIMER
in Universal Coordinated Time (aka Greenwich Mean Time). */
extern struct tm *gmtime (const time_t *__timer) __THROW;
/* Return the `struct tm' representation
of *TIMER in the local timezone. */
extern struct tm *localtime (const time_t *__timer) __THROW;
#ifdef __USE_POSIX
/* Return the `struct tm' representation of *TIMER in UTC,
using *TP to store the result. */
extern struct tm *gmtime_r (const time_t *__restrict __timer,
struct tm *__restrict __tp) __THROW;
/* Return the `struct tm' representation of *TIMER in local time,
using *TP to store the result. */
extern struct tm *localtime_r (const time_t *__restrict __timer,
struct tm *__restrict __tp) __THROW;
#endif /* POSIX */
/* Return a string of the form "Day Mon dd hh:mm:ss yyyy\n"
that is the representation of TP in this format. */
extern char *asctime (const struct tm *__tp) __THROW;
/* Equivalent to `asctime (localtime (timer))'. */
extern char *ctime (const time_t *__timer) __THROW;
#ifdef __USE_POSIX
/* Reentrant versions of the above functions. */
/* Return in BUF a string of the form "Day Mon dd hh:mm:ss yyyy\n"
that is the representation of TP in this format. */
extern char *asctime_r (const struct tm *__restrict __tp,
char *__restrict __buf) __THROW;
/* Equivalent to `asctime_r (localtime_r (timer, *TMP*), buf)'. */
extern char *ctime_r (const time_t *__restrict __timer,
char *__restrict __buf) __THROW;
#endif /* POSIX */
/* Defined in localtime.c. */
extern char *__tzname[2]; /* Current timezone names. */
extern int __daylight; /* If daylight-saving time is ever in use. */
extern long int __timezone; /* Seconds west of UTC. */
#ifdef __USE_POSIX
/* Same as above. */
extern char *tzname[2];
/* Set time conversion information from the TZ environment variable.
If TZ is not defined, a locale-dependent default is used. */
extern void tzset (void) __THROW;
#endif
#if defined __USE_MISC || defined __USE_XOPEN
extern int daylight;
extern long int timezone;
#endif
#ifdef __USE_MISC
/* Set the system time to *WHEN.
This call is restricted to the superuser. */
extern int stime (const time_t *__when) __THROW;
#endif
/* Nonzero if YEAR is a leap year (every 4 years,
except every 100th isn't, and every 400th is). */
#define __isleap(year) \
((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
#ifdef __USE_MISC
/* Miscellaneous functions many Unices inherited from the public domain
localtime package. These are included only for compatibility. */
/* Like `mktime', but for TP represents Universal Time, not local time. */
extern time_t timegm (struct tm *__tp) __THROW;
/* Another name for `mktime'. */
extern time_t timelocal (struct tm *__tp) __THROW;
/* Return the number of days in YEAR. */
extern int dysize (int __year) __THROW __attribute__ ((__const__));
#endif
#ifdef __USE_POSIX199309
/* Pause execution for a number of nanoseconds.
This function is a cancellation point and therefore not marked with
__THROW. */
extern int nanosleep (const struct timespec *__requested_time,
struct timespec *__remaining);
/* Get resolution of clock CLOCK_ID. */
extern int clock_getres (clockid_t __clock_id, struct timespec *__res) __THROW;
/* Get current value of clock CLOCK_ID and store it in TP. */
extern int clock_gettime (clockid_t __clock_id, struct timespec *__tp) __THROW;
/* Set clock CLOCK_ID to value TP. */
extern int clock_settime (clockid_t __clock_id, const struct timespec *__tp)
__THROW;
# ifdef __USE_XOPEN2K
/* High-resolution sleep with the specified clock.
This function is a cancellation point and therefore not marked with
__THROW. */
extern int clock_nanosleep (clockid_t __clock_id, int __flags,
const struct timespec *__req,
struct timespec *__rem);
/* Return clock ID for CPU-time clock. */
extern int clock_getcpuclockid (pid_t __pid, clockid_t *__clock_id) __THROW;
# endif
/* Create new per-process timer using CLOCK_ID. */
extern int timer_create (clockid_t __clock_id,
struct sigevent *__restrict __evp,
timer_t *__restrict __timerid) __THROW;
/* Delete timer TIMERID. */
extern int timer_delete (timer_t __timerid) __THROW;
/* Set timer TIMERID to VALUE, returning old value in OVALUE. */
extern int timer_settime (timer_t __timerid, int __flags,
const struct itimerspec *__restrict __value,
struct itimerspec *__restrict __ovalue) __THROW;
/* Get current value of timer TIMERID and store it in VALUE. */
extern int timer_gettime (timer_t __timerid, struct itimerspec *__value)
__THROW;
/* Get expiration overrun for timer TIMERID. */
extern int timer_getoverrun (timer_t __timerid) __THROW;
#endif
#ifdef __USE_ISOC11
/* Set TS to calendar time based in time base BASE. */
extern int timespec_get (struct timespec *__ts, int __base)
__THROW __nonnull ((1));
#endif
#ifdef __USE_XOPEN_EXTENDED
/* Set to one of the following values to indicate an error.
1 the DATEMSK environment variable is null or undefined,
2 the template file cannot be opened for reading,
3 failed to get file status information,
4 the template file is not a regular file,
5 an error is encountered while reading the template file,
6 memory allication failed (not enough memory available),
7 there is no line in the template that matches the input,
8 invalid input specification Example: February 31 or a time is
specified that can not be represented in a time_t (representing
the time in seconds since 00:00:00 UTC, January 1, 1970) */
extern int getdate_err;
/* Parse the given string as a date specification and return a value
representing the value. The templates from the file identified by
the environment variable DATEMSK are used. In case of an error
`getdate_err' is set.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern struct tm *getdate (const char *__string);
#endif
#ifdef __USE_GNU
/* Since `getdate' is not reentrant because of the use of `getdate_err'
and the static buffer to return the result in, we provide a thread-safe
variant. The functionality is the same. The result is returned in
the buffer pointed to by RESBUFP and in case of an error the return
value is != 0 with the same values as given above for `getdate_err'.
This function is not part of POSIX and therefore no official
cancellation point. But due to similarity with an POSIX interface
or due to the implementation it is a cancellation point and
therefore not marked with __THROW. */
extern int getdate_r (const char *__restrict __string,
struct tm *__restrict __resbufp);
#endif
__END_DECLS
#endif /* time.h. */
usr/include/bind9-export/isc/time.h 0000644 00000021254 15051177623 0013224 0 ustar 00 /*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#ifndef ISC_TIME_H
#define ISC_TIME_H 1
/*! \file */
#include <inttypes.h>
#include <stdbool.h>
#include <isc/lang.h>
#include <isc/types.h>
/***
*** Intervals
***/
/*!
* \brief
* The contents of this structure are private, and MUST NOT be accessed
* directly by callers.
*
* The contents are exposed only to allow callers to avoid dynamic allocation.
*/
struct isc_interval {
unsigned int seconds;
unsigned int nanoseconds;
};
extern const isc_interval_t * const isc_interval_zero;
/*
* ISC_FORMATHTTPTIMESTAMP_SIZE needs to be 30 in C locale and potentially
* more for other locales to handle longer national abbreviations when
* expanding strftime's %a and %b.
*/
#define ISC_FORMATHTTPTIMESTAMP_SIZE 50
ISC_LANG_BEGINDECLS
void
isc_interval_set(isc_interval_t *i,
unsigned int seconds, unsigned int nanoseconds);
/*%<
* Set 'i' to a value representing an interval of 'seconds' seconds and
* 'nanoseconds' nanoseconds, suitable for use in isc_time_add() and
* isc_time_subtract().
*
* Requires:
*
*\li 't' is a valid pointer.
*\li nanoseconds < 1000000000.
*/
bool
isc_interval_iszero(const isc_interval_t *i);
/*%<
* Returns true iff. 'i' is the zero interval.
*
* Requires:
*
*\li 'i' is a valid pointer.
*/
/***
*** Absolute Times
***/
/*%
* The contents of this structure are private, and MUST NOT be accessed
* directly by callers.
*
* The contents are exposed only to allow callers to avoid dynamic allocation.
*/
struct isc_time {
unsigned int seconds;
unsigned int nanoseconds;
};
extern const isc_time_t * const isc_time_epoch;
void
isc_time_set(isc_time_t *t, unsigned int seconds, unsigned int nanoseconds);
/*%<
* Set 't' to a value which represents the given number of seconds and
* nanoseconds since 00:00:00 January 1, 1970, UTC.
*
* Notes:
*\li The Unix version of this call is equivalent to:
*\code
* isc_time_settoepoch(t);
* isc_interval_set(i, seconds, nanoseconds);
* isc_time_add(t, i, t);
*\endcode
*
* Requires:
*\li 't' is a valid pointer.
*\li nanoseconds < 1000000000.
*/
void
isc_time_settoepoch(isc_time_t *t);
/*%<
* Set 't' to the time of the epoch.
*
* Notes:
*\li The date of the epoch is platform-dependent.
*
* Requires:
*
*\li 't' is a valid pointer.
*/
bool
isc_time_isepoch(const isc_time_t *t);
/*%<
* Returns true iff. 't' is the epoch ("time zero").
*
* Requires:
*
*\li 't' is a valid pointer.
*/
#ifdef CLOCK_BOOTTIME
isc_result_t
isc_time_boottime(isc_time_t *t);
/*%<
* Set 't' to monotonic time from previous boot
* it's not affected by system time change. It also
* includes the time system was suspended
*
* Requires:
*\li 't' is a valid pointer.
*
* Returns:
*
*\li Success
*\li Unexpected error
* Getting the time from the system failed.
*/
#endif /* CLOCK_BOOTTIME */
isc_result_t
isc_time_now(isc_time_t *t);
/*%<
* Set 't' to the current absolute time.
*
* Requires:
*
*\li 't' is a valid pointer.
*
* Returns:
*
*\li Success
*\li Unexpected error
* Getting the time from the system failed.
*\li Out of range
* The time from the system is too large to be represented
* in the current definition of isc_time_t.
*/
isc_result_t
isc_time_nowplusinterval(isc_time_t *t, const isc_interval_t *i);
/*%<
* Set *t to the current absolute time + i.
*
* Note:
*\li This call is equivalent to:
*
*\code
* isc_time_now(t);
* isc_time_add(t, i, t);
*\endcode
*
* Requires:
*
*\li 't' and 'i' are valid pointers.
*
* Returns:
*
*\li Success
*\li Unexpected error
* Getting the time from the system failed.
*\li Out of range
* The interval added to the time from the system is too large to
* be represented in the current definition of isc_time_t.
*/
int
isc_time_compare(const isc_time_t *t1, const isc_time_t *t2);
/*%<
* Compare the times referenced by 't1' and 't2'
*
* Requires:
*
*\li 't1' and 't2' are valid pointers.
*
* Returns:
*
*\li -1 t1 < t2 (comparing times, not pointers)
*\li 0 t1 = t2
*\li 1 t1 > t2
*/
isc_result_t
isc_time_add(const isc_time_t *t, const isc_interval_t *i, isc_time_t *result);
/*%<
* Add 'i' to 't', storing the result in 'result'.
*
* Requires:
*
*\li 't', 'i', and 'result' are valid pointers.
*
* Returns:
*\li Success
*\li Out of range
* The interval added to the time is too large to
* be represented in the current definition of isc_time_t.
*/
isc_result_t
isc_time_subtract(const isc_time_t *t, const isc_interval_t *i,
isc_time_t *result);
/*%<
* Subtract 'i' from 't', storing the result in 'result'.
*
* Requires:
*
*\li 't', 'i', and 'result' are valid pointers.
*
* Returns:
*\li Success
*\li Out of range
* The interval is larger than the time since the epoch.
*/
uint64_t
isc_time_microdiff(const isc_time_t *t1, const isc_time_t *t2);
/*%<
* Find the difference in microseconds between time t1 and time t2.
* t2 is the subtrahend of t1; ie, difference = t1 - t2.
*
* Requires:
*
*\li 't1' and 't2' are valid pointers.
*
* Returns:
*\li The difference of t1 - t2, or 0 if t1 <= t2.
*/
uint32_t
isc_time_seconds(const isc_time_t *t);
/*%<
* Return the number of seconds since the epoch stored in a time structure.
*
* Requires:
*
*\li 't' is a valid pointer.
*/
isc_result_t
isc_time_secondsastimet(const isc_time_t *t, time_t *secondsp);
/*%<
* Ensure the number of seconds in an isc_time_t is representable by a time_t.
*
* Notes:
*\li The number of seconds stored in an isc_time_t might be larger
* than the number of seconds a time_t is able to handle. Since
* time_t is mostly opaque according to the ANSI/ISO standard
* (essentially, all you can be sure of is that it is an arithmetic type,
* not even necessarily integral), it can be tricky to ensure that
* the isc_time_t is in the range a time_t can handle. Use this
* function in place of isc_time_seconds() any time you need to set a
* time_t from an isc_time_t.
*
* Requires:
*\li 't' is a valid pointer.
*
* Returns:
*\li Success
*\li Out of range
*/
uint32_t
isc_time_nanoseconds(const isc_time_t *t);
/*%<
* Return the number of nanoseconds stored in a time structure.
*
* Notes:
*\li This is the number of nanoseconds in excess of the number
* of seconds since the epoch; it will always be less than one
* full second.
*
* Requires:
*\li 't' is a valid pointer.
*
* Ensures:
*\li The returned value is less than 1*10^9.
*/
void
isc_time_formattimestamp(const isc_time_t *t, char *buf, unsigned int len);
/*%<
* Format the time 't' into the buffer 'buf' of length 'len',
* using a format like "30-Aug-2000 04:06:47.997" and the local time zone.
* If the text does not fit in the buffer, the result is indeterminate,
* but is always guaranteed to be null terminated.
*
* Requires:
*\li 'len' > 0
*\li 'buf' points to an array of at least len chars
*
*/
void
isc_time_formathttptimestamp(const isc_time_t *t, char *buf, unsigned int len);
/*%<
* Format the time 't' into the buffer 'buf' of length 'len',
* using a format like "Mon, 30 Aug 2000 04:06:47 GMT"
* If the text does not fit in the buffer, the result is indeterminate,
* but is always guaranteed to be null terminated.
*
* Requires:
*\li 'len' > 0
*\li 'buf' points to an array of at least len chars
*
*/
isc_result_t
isc_time_parsehttptimestamp(char *input, isc_time_t *t);
/*%<
* Parse the time in 'input' into the isc_time_t pointed to by 't',
* expecting a format like "Mon, 30 Aug 2000 04:06:47 GMT"
*
* Requires:
*\li 'buf' and 't' are not NULL.
*/
void
isc_time_formatISO8601(const isc_time_t *t, char *buf, unsigned int len);
/*%<
* Format the time 't' into the buffer 'buf' of length 'len',
* using the ISO8601 format: "yyyy-mm-ddThh:mm:ssZ"
* If the text does not fit in the buffer, the result is indeterminate,
* but is always guaranteed to be null terminated.
*
* Requires:
*\li 'len' > 0
*\li 'buf' points to an array of at least len chars
*
*/
void
isc_time_formatISO8601ms(const isc_time_t *t, char *buf, unsigned int len);
/*%<
* Format the time 't' into the buffer 'buf' of length 'len',
* using the ISO8601 format: "yyyy-mm-ddThh:mm:ss.sssZ"
* If the text does not fit in the buffer, the result is indeterminate,
* but is always guaranteed to be null terminated.
*
* Requires:
*\li 'len' > 0
*\li 'buf' points to an array of at least len chars
*
*/
ISC_LANG_ENDDECLS
#endif /* ISC_TIME_H */