-/* Copyright (C) 1991-2003,2006,2009,2011,2012 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2020 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
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/>. */
+ <https://www.gnu.org/licenses/>. */
/*
* ISO C99 Standard: 7.23 Date and time <time.h>
*/
#ifndef _TIME_H
+#define _TIME_H 1
-#if (! defined __need_time_t && !defined __need_clock_t && \
- ! defined __need_timespec)
-# define _TIME_H 1
-# include <features.h>
+#include <features.h>
-__BEGIN_DECLS
-
-#endif
-
-#ifdef _TIME_H
-/* Get size_t and NULL from <stddef.h>. */
-# define __need_size_t
-# define __need_NULL
-# include <stddef.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. */
-# include <bits/time.h>
-
-/* This is the obsolete POSIX.1-1988 name for the same constant. */
-# if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K
-# ifndef CLK_TCK
-# define CLK_TCK CLOCKS_PER_SEC
-# endif
-# endif
+ ticks per second, and possibly a number of other constants. */
+#include <bits/time.h>
-#endif /* <time.h> included. */
+/* 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 __clock_t_defined && (defined _TIME_H || defined __need_clock_t)
-# define __clock_t_defined 1
-
-# include <bits/types.h>
-
-__BEGIN_NAMESPACE_STD
-/* Returned by `clock'. */
-typedef __clock_t clock_t;
-__END_NAMESPACE_STD
-#if defined __USE_XOPEN || defined __USE_POSIX || defined __USE_MISC
-__USING_NAMESPACE_STD(clock_t)
+#if defined __USE_POSIX199309 || defined __USE_ISOC11
+# include <bits/types/struct_timespec.h>
#endif
-#endif /* clock_t not defined and <time.h> or need clock_t. */
-#undef __need_clock_t
-
-#if !defined __time_t_defined && (defined _TIME_H || defined __need_time_t)
-# define __time_t_defined 1
-
-# include <bits/types.h>
-
-__BEGIN_NAMESPACE_STD
-/* Returned by `time'. */
-typedef __time_t time_t;
-__END_NAMESPACE_STD
-#if defined __USE_POSIX || defined __USE_MISC || defined __USE_SVID
-__USING_NAMESPACE_STD(time_t)
-#endif
-
-#endif /* time_t not defined and <time.h> or need time_t. */
-#undef __need_time_t
-
-#if !defined __clockid_t_defined && \
- ((defined _TIME_H && defined __USE_POSIX199309) || defined __need_clockid_t)
-# define __clockid_t_defined 1
-
-# include <bits/types.h>
-
-/* Clock ID used in clock and timer functions. */
-typedef __clockid_t clockid_t;
-
-#endif /* clockid_t not defined and <time.h> or need clockid_t. */
-#undef __clockid_time_t
-
-#if !defined __timer_t_defined && \
- ((defined _TIME_H && defined __USE_POSIX199309) || defined __need_timer_t)
-# define __timer_t_defined 1
-
-# include <bits/types.h>
-
-/* Timer ID returned by `timer_create'. */
-typedef __timer_t timer_t;
-
-#endif /* timer_t not defined and <time.h> or need timer_t. */
-#undef __need_timer_t
-
-
-#if (!defined __timespec_defined \
- && ((defined _TIME_H \
- && (defined __USE_POSIX199309 || defined __USE_MISC \
- || defined __USE_ISOC11)) \
- || defined __need_timespec))
-# define __timespec_defined 1
-
-# include <bits/types.h> /* This defines __time_t for us. */
-
-/* POSIX.1b structure for a time value. This is like a `struct timeval' but
- has nanoseconds instead of microseconds. */
-struct timespec
- {
- __time_t tv_sec; /* Seconds. */
- long int tv_nsec; /* Nanoseconds. */
- };
-
-#endif /* timespec not defined and <time.h> or need timespec. */
-#undef __need_timespec
-
-
-#ifdef _TIME_H
-__BEGIN_NAMESPACE_STD
-/* Used by other time functions. */
-struct tm
-{
- int tm_sec; /* Seconds. [0-60] (1 leap second) */
- int tm_min; /* Minutes. [0-59] */
- int tm_hour; /* Hours. [0-23] */
- int tm_mday; /* Day. [1-31] */
- int tm_mon; /* Month. [0-11] */
- int tm_year; /* Year - 1900. */
- int tm_wday; /* Day of week. [0-6] */
- int tm_yday; /* Days in year.[0-365] */
- int tm_isdst; /* DST. [-1/0/1]*/
-
-# ifdef __USE_BSD
- long int tm_gmtoff; /* Seconds east of UTC. */
- const char *tm_zone; /* Timezone abbreviation. */
-# else
- long int __tm_gmtoff; /* Seconds east of UTC. */
- const char *__tm_zone; /* Timezone abbreviation. */
-# endif
-};
-__END_NAMESPACE_STD
-#if defined __USE_XOPEN || defined __USE_POSIX || defined __USE_MISC
-__USING_NAMESPACE_STD(tm)
-#endif
-
-
-# ifdef __USE_POSIX199309
-/* POSIX.1b structure for timer start values and intervals. */
-struct itimerspec
- {
- struct timespec it_interval;
- struct timespec it_value;
- };
-
-/* We can use a simple forward declaration. */
+#ifdef __USE_POSIX199309
+# include <bits/types/clockid_t.h>
+# include <bits/types/timer_t.h>
+# include <bits/types/struct_itimerspec.h>
struct sigevent;
+#endif
-# endif /* POSIX.1b */
-
-# ifdef __USE_XOPEN2K
-# ifndef __pid_t_defined
+#ifdef __USE_XOPEN2K
+# ifndef __pid_t_defined
typedef __pid_t pid_t;
-# define __pid_t_defined
-# endif
+# define __pid_t_defined
# endif
+#endif
+#ifdef __USE_XOPEN2K8
+# include <bits/types/locale_t.h>
+#endif
-# ifdef __USE_ISOC11
+#ifdef __USE_ISOC11
/* Time base values for timespec_get. */
# define TIME_UTC 1
-# endif
+#endif
+__BEGIN_DECLS
-__BEGIN_NAMESPACE_STD
/* Time used by the program so far (user time + system time).
- The result / CLOCKS_PER_SECOND is program time in seconds. */
+ 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 size_t strftime (char *__restrict __s, size_t __maxsize,
const char *__restrict __format,
const struct tm *__restrict __tp) __THROW;
-__END_NAMESPACE_STD
-# ifdef __USE_XOPEN
+#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
+#endif
-# ifdef __USE_XOPEN2K8
+#ifdef __USE_XOPEN2K8
/* Similar to the two functions above but take the information from
the provided locale and not the global locale. */
-# include <xlocale.h>
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
+ locale_t __loc) __THROW;
+#endif
-# ifdef __USE_GNU
+#ifdef __USE_GNU
extern char *strptime_l (const char *__restrict __s,
const char *__restrict __fmt, struct tm *__tp,
- __locale_t __loc) __THROW;
-# endif
+ locale_t __loc) __THROW;
+#endif
-__BEGIN_NAMESPACE_STD
/* 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;
-__END_NAMESPACE_STD
-# if defined __USE_POSIX || defined __USE_MISC
+#if defined __USE_POSIX || __GLIBC_USE (ISOC2X)
/* 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,
using *TP to store the result. */
extern struct tm *localtime_r (const time_t *__restrict __timer,
struct tm *__restrict __tp) __THROW;
-# endif /* POSIX or misc */
+#endif /* POSIX || C2X */
-__BEGIN_NAMESPACE_STD
/* 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;
-__END_NAMESPACE_STD
-# if defined __USE_POSIX || defined __USE_MISC
+#if defined __USE_POSIX || __GLIBC_USE (ISOC2X)
/* Reentrant versions of the above functions. */
/* Return in BUF a string of the form "Day Mon dd hh:mm:ss yyyy\n"
/* Equivalent to `asctime_r (localtime_r (timer, *TMP*), buf)'. */
extern char *ctime_r (const time_t *__restrict __timer,
char *__restrict __buf) __THROW;
-# endif /* POSIX or misc */
+#endif /* POSIX || C2X */
/* Defined in localtime.c. */
extern long int __timezone; /* Seconds west of UTC. */
-# ifdef __USE_POSIX
+#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
+#endif
-# if defined __USE_SVID || defined __USE_XOPEN
+#if defined __USE_MISC || defined __USE_XOPEN
extern int daylight;
extern long int timezone;
-# endif
-
-# ifdef __USE_SVID
-/* Set the system time to *WHEN.
- This call is restricted to the superuser. */
-extern int stime (const time_t *__when) __THROW;
-# endif
+#endif
/* Nonzero if YEAR is a leap year (every 4 years,
except every 100th isn't, and every 400th is). */
-# define __isleap(year) \
+#define __isleap(year) \
((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
-# ifdef __USE_MISC
+#ifdef __USE_MISC
/* Miscellaneous functions many Unices inherited from the public domain
localtime package. These are included only for compatibility. */
/* Return the number of days in YEAR. */
extern int dysize (int __year) __THROW __attribute__ ((__const__));
-# endif
+#endif
-# ifdef __USE_POSIX199309
+#ifdef __USE_POSIX199309
/* Pause execution for a number of nanoseconds.
This function is a cancellation point and therefore not marked with
extern int clock_settime (clockid_t __clock_id, const struct timespec *__tp)
__THROW;
-# ifdef __USE_XOPEN2K
+# ifdef __USE_XOPEN2K
/* High-resolution sleep with the specified clock.
This function is a cancellation point and therefore not marked with
/* Return clock ID for CPU-time clock. */
extern int clock_getcpuclockid (pid_t __pid, clockid_t *__clock_id) __THROW;
-# endif
+# endif
/* Create new per-process timer using CLOCK_ID. */
/* Delete timer TIMERID. */
extern int timer_delete (timer_t __timerid) __THROW;
-/* Set timer TIMERID to VALUE, returning old value in OVLAUE. */
+/* 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 VLAUE. */
+/* 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
+#endif
-# ifdef __USE_ISOC11
+#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
+#endif
-# ifdef __USE_XOPEN_EXTENDED
+#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,
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern struct tm *getdate (const char *__string);
-# endif
+#endif
-# ifdef __USE_GNU
+#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
therefore not marked with __THROW. */
extern int getdate_r (const char *__restrict __string,
struct tm *__restrict __resbufp);
-# endif
+#endif
__END_DECLS
-#endif /* <time.h> included. */
-
-#endif /* <time.h> not already included. */
+#endif /* time.h. */
projects / thirdparty / glibc.git / blobdiff