-/* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+/* 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
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ 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
-Library General Public License for more details.
+ 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 Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
/*
- * ANSI Standard: 4.12 DATE and TIME <time.h>
+ * 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)
-#define _TIME_H 1
#include <features.h>
-__BEGIN_DECLS
-
-#endif
-
-#ifdef _TIME_H
-/* Get size_t and NULL from <stddef.h>. */
-#define __need_size_t
-#define __need_NULL
+#define __need_size_t
+#define __need_NULL
#include <stddef.h>
-#endif /* <time.h> included. */
-
-
-
-#ifdef _TIME_H
/* This defines CLOCKS_PER_SEC, which is the number of processor clock
- ticks per second. */
-#include <timebits.h>
-
-/* This is the obsolete POSIX.1-1988 name for the same constant. */
-#ifdef __USE_POSIX
-#define CLK_TCK CLOCKS_PER_SEC
-#endif
-
-#endif /* <time.h> included. */
-
-
-#if !defined(__clock_t_defined) && \
- (defined(_TIME_H) || defined(__need_clock_t))
-#define __clock_t_defined 1
-
-/* Returned by `clock'. */
-typedef long int clock_t;
-
-#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
+ ticks per second, and possibly a number of other constants. */
+#include <bits/time.h>
-#include <gnu/types.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>
-/* Returned by `time'. */
-typedef __time_t time_t;
+#if defined __USE_POSIX199309 || defined __USE_ISOC11
+# include <bits/types/struct_timespec.h>
+#endif
-#endif /* time_t not defined and <time.h> or need time_t. */
-#undef __need_time_t
+#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 _TIME_H
-/* Used by other time functions. */
-struct tm
-{
- int tm_sec; /* Seconds. [0-61] (2 leap seconds) */
- 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]*/
- long int tm_gmtoff; /* Seconds west of UTC. */
- __const char *tm_zone; /* Timezone abbreviation. */
-};
+#ifdef __USE_XOPEN2K8
+# include <bits/types/locale_t.h>
+#endif
-#endif /* <time.h> included. */
+#ifdef __USE_ISOC11
+/* Time base values for timespec_get. */
+# define TIME_UTC 1
+#endif
+__BEGIN_DECLS
-#ifdef _TIME_H
/* Time used by the program so far (user time + system time).
- The result / CLOCKS_PER_SECOND is program time in seconds. */
-extern clock_t clock __P ((void));
+ 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 __P ((time_t *__timer));
+extern time_t time (time_t *__timer) __THROW;
/* Return the difference between TIME1 and TIME0. */
-extern double difftime __P ((time_t __time1, time_t __time0))
- __attribute__ ((__const__));
+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 __P ((struct tm *__tp));
-
-/* Subroutine of `mktime'. Return the `time_t' representation of TP and
- normalize TP, given that a `struct tm *' maps to a `time_t' as performed
- by FUNC. Keep track of next guess for time_t offset in *OFFSET. */
-extern time_t __mktime_internal __P ((struct tm *__tp,
- struct tm *(*__func) (const time_t *,
- struct tm *),
- time_t *__offset));
+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 __P ((char *__s, size_t __maxsize,
- __const char *__format, __const struct tm *__tp));
+extern size_t strftime (char *__restrict __s, size_t __maxsize,
+ const char *__restrict __format,
+ const struct tm *__restrict __tp) __THROW;
-#ifdef __USE_MISC
+#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 __P ((__const char *__s, __const char *__fmt,
- struct tm *__tp));
+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 __P ((__const time_t *__timer));
+extern struct tm *gmtime (const time_t *__timer) __THROW;
/* Return the `struct tm' representation
of *TIMER in the local timezone. */
-extern struct tm *localtime __P ((__const time_t *__timer));
+extern struct tm *localtime (const time_t *__timer) __THROW;
-#ifdef __USE_REENTRANT
+#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 __P ((__const time_t *__timer,
- struct tm *__tp));
-extern struct tm *gmtime_r __P ((__const time_t *__timer,
- struct tm *__tp));
+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 __P ((__const time_t *__timer,
- struct tm *__tp));
-extern struct tm *localtime_r __P ((__const time_t *__timer,
- struct tm *__tp));
-#endif
-
-/* Compute the `struct tm' representation of *T,
- offset OFFSET seconds east of UTC,
- and store year, yday, mon, mday, wday, hour, min, sec into *TP. */
-extern void __offtime __P ((__const time_t *__timer,
- long int __offset,
- struct tm *__TP));
+extern struct tm *localtime_r (const time_t *__restrict __timer,
+ struct tm *__restrict __tp) __THROW;
+#endif /* POSIX || C2X */
/* 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 __P ((__const struct tm *__tp));
+extern char *asctime (const struct tm *__tp) __THROW;
-/* Equivalent to `asctime(localtime(timer))'. */
-extern char *ctime __P ((__const time_t *__timer));
+/* Equivalent to `asctime (localtime (timer))'. */
+extern char *ctime (const time_t *__timer) __THROW;
+
+#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"
+ 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 || C2X */
/* Defined in localtime.c. */
extern char *__tzname[2]; /* Current timezone names. */
-extern int __daylight; /* If it is daylight savings time. */
+extern int __daylight; /* If daylight-saving time is ever in use. */
extern long int __timezone; /* Seconds west of UTC. */
-/* Set time conversion information from the TZ environment variable.
- If TZ is not defined, a locale-dependent default is used. */
-extern void __tzset __P ((void));
#ifdef __USE_POSIX
/* Same as above. */
extern char *tzname[2];
-/* Return the maximum length of a timezone name.
- This is what `sysconf (_SC_TZNAME_MAX)' does. */
-extern long int __tzname_max __P ((void));
-
-extern void tzset __P ((void));
-#ifdef __OPTIMIZE__
-#define tzset() __tzset()
-#endif /* Optimizing. */
+/* 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
-#ifdef __USE_SVID
+#if defined __USE_MISC || defined __USE_XOPEN
extern int daylight;
extern long int timezone;
-
-/* Set the system time to *WHEN.
- This call is restricted to the superuser. */
-extern int stime __P ((__const time_t *__when));
#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))
localtime package. These are included only for compatibility. */
/* Like `mktime', but for TP represents Universal Time, not local time. */
-extern time_t timegm __P ((struct tm *__tp));
+extern time_t timegm (struct tm *__tp) __THROW;
/* Another name for `mktime'. */
-extern time_t timelocal __P ((struct tm *__tp));
+extern time_t timelocal (struct tm *__tp) __THROW;
/* Return the number of days in YEAR. */
-extern int dysize __P ((int __year));
+extern int dysize (int __year) __THROW __attribute__ ((__const__));
#endif
-/* POSIX.4 structure for a time value. This is like a `struct timeval' but
- has nanoseconds instead of microseconds. */
-struct timespec
- {
- long int ts_sec; /* Seconds. */
- long int ts_nsec; /* Nanoseconds. */
- };
+#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.
-#ifdef __USE_POSIX
-/* Pause execution for a number of nanoseconds. */
-extern int nanosleep __P ((__const struct timespec *__requested_time,
- struct timespec *__remaining));
+ 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
-__END_DECLS
+#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
-#endif /* <time.h> included. */
+#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> not already included. */
+#endif /* time.h. */
projects / thirdparty / glibc.git / blobdiff