1 /* A more-standard <time.h>.
3 Copyright (C) 2007-2009 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software Foundation,
17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
20 @PRAGMA_SYSTEM_HEADER@
23 /* Don't get in the way of glibc when it includes time.h merely to
24 declare a few standard symbols, rather than to declare all the
25 symbols. Also, Solaris 8 <time.h> eventually includes itself
26 recursively; if that is happening, just include the system <time.h>
27 without adding our own declarations. */
28 #if (defined __need_time_t || defined __need_clock_t \
29 || defined __need_timespec \
30 || defined _GL_TIME_H)
32 # @INCLUDE_NEXT@ @NEXT_TIME_H@
38 # @INCLUDE_NEXT@ @NEXT_TIME_H@
40 /* NetBSD 5.0 mis-defines NULL. */
43 /* The definition of _GL_ARG_NONNULL is copied here. */
49 /* Some systems don't define struct timespec (e.g., AIX 4.1, Ultrix 4.3).
50 Or they define it with the wrong member names or define it in <sys/time.h>
51 (e.g., FreeBSD circa 1997). */
52 # if ! @TIME_H_DEFINES_STRUCT_TIMESPEC@
53 # if @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
54 # include <sys/time.h>
57 # define timespec rpl_timespec
66 /* Sleep for at least RQTP seconds unless interrupted, If interrupted,
67 return -1 and store the remaining time into RMTP. See
68 <http://www.opengroup.org/susv3xsh/nanosleep.html>. */
69 # if @REPLACE_NANOSLEEP@
70 # define nanosleep rpl_nanosleep
71 extern int nanosleep (struct timespec const *__rqtp, struct timespec *__rmtp)
72 _GL_ARG_NONNULL ((1));
75 /* Return the 'time_t' representation of TP and normalize TP. */
77 # define mktime rpl_mktime
78 extern time_t mktime (struct tm *__tp) _GL_ARG_NONNULL ((1));
81 /* Convert TIMER to RESULT, assuming local time and UTC respectively. See
82 <http://www.opengroup.org/susv3xsh/localtime_r.html> and
83 <http://www.opengroup.org/susv3xsh/gmtime_r.html>. */
84 # if @REPLACE_LOCALTIME_R@
86 # define localtime_r rpl_localtime_r
88 # define gmtime_r rpl_gmtime_r
89 extern struct tm *localtime_r (time_t const *restrict __timer,
90 struct tm *restrict __result)
91 _GL_ARG_NONNULL ((1, 2));
92 extern struct tm *gmtime_r (time_t const *restrict __timer,
93 struct tm *restrict __result)
94 _GL_ARG_NONNULL ((1, 2));
97 /* Parse BUF as a time stamp, assuming FORMAT specifies its layout, and store
98 the resulting broken-down time into TM. See
99 <http://www.opengroup.org/susv3xsh/strptime.html>. */
100 # if @REPLACE_STRPTIME@
102 # define strptime rpl_strptime
103 extern char *strptime (char const *restrict __buf,
104 char const *restrict __format,
105 struct tm *restrict __tm)
106 _GL_ARG_NONNULL ((1, 2, 3));
109 /* Convert TM to a time_t value, assuming UTC. */
110 # if @REPLACE_TIMEGM@
112 # define timegm rpl_timegm
113 extern time_t timegm (struct tm *__tm) _GL_ARG_NONNULL ((1));
116 /* Encourage applications to avoid unsafe functions that can overrun
117 buffers when given outlandish struct tm values. Portable
118 applications should use strftime (or even sprintf) instead. */
119 # if GNULIB_PORTCHECK
121 # define asctime eschew_asctime
123 # define asctime_r eschew_asctime_r
125 # define ctime eschew_ctime
127 # define ctime_r eschew_ctime_r