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1/* A more-standard <time.h>.
2
3 Copyright (C) 2007-2008 Free Software Foundation, Inc.
4
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 3, or (at your option)
8 any later version.
9
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.
14
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. */
18
19#if __GNUC__ >= 3
20@PRAGMA_SYSTEM_HEADER@
21#endif
22
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)
31
32# @INCLUDE_NEXT@ @NEXT_TIME_H@
33
34#else
35
36# define _GL_TIME_H
37
38# @INCLUDE_NEXT@ @NEXT_TIME_H@
39
40# ifdef __cplusplus
41extern "C" {
42# endif
43
44/* Some systems don't define struct timespec (e.g., AIX 4.1, Ultrix 4.3).
45 Or they define it with the wrong member names or define it in <sys/time.h>
46 (e.g., FreeBSD circa 1997). */
47# if ! @TIME_H_DEFINES_STRUCT_TIMESPEC@
48# if @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
49# include <sys/time.h>
50# else
51# undef timespec
52# define timespec rpl_timespec
53struct timespec
54{
55 time_t tv_sec;
56 long int tv_nsec;
57};
58# endif
59# endif
60
61/* Sleep for at least RQTP seconds unless interrupted, If interrupted,
62 return -1 and store the remaining time into RMTP. See
63 <http://www.opengroup.org/susv3xsh/nanosleep.html>. */
64# if @REPLACE_NANOSLEEP@
65# define nanosleep rpl_nanosleep
66int nanosleep (struct timespec const *__rqtp, struct timespec *__rmtp);
67# endif
68
69/* Convert TIMER to RESULT, assuming local time and UTC respectively. See
70 <http://www.opengroup.org/susv3xsh/localtime_r.html> and
71 <http://www.opengroup.org/susv3xsh/gmtime_r.html>. */
72# if @REPLACE_LOCALTIME_R@
73# undef localtime_r
74# define localtime_r rpl_localtime_r
75# undef gmtime_r
76# define gmtime_r rpl_gmtime_r
77struct tm *localtime_r (time_t const *restrict __timer,
78 struct tm *restrict __result);
79struct tm *gmtime_r (time_t const *restrict __timer,
80 struct tm *restrict __result);
81# endif
82
83/* Parse BUF as a time stamp, assuming FORMAT specifies its layout, and store
84 the resulting broken-down time into TM. See
85 <http://www.opengroup.org/susv3xsh/strptime.html>. */
86# if @REPLACE_STRPTIME@
87# undef strptime
88# define strptime rpl_strptime
89char *strptime (char const *restrict __buf, char const *restrict __format,
90 struct tm *restrict __tm);
91# endif
92
93/* Convert TM to a time_t value, assuming UTC. */
94# if @REPLACE_TIMEGM@
95# undef timegm
96# define timegm rpl_timegm
97time_t timegm (struct tm *__tm);
98# endif
99
100/* Encourage applications to avoid unsafe functions that can overrun
101 buffers when given outlandish struct tm values. Portable
102 applications should use strftime (or even sprintf) instead. */
103# if GNULIB_PORTCHECK
104# undef asctime
105# define asctime eschew_asctime
106# undef asctime_r
107# define asctime_r eschew_asctime_r
108# undef ctime
109# define ctime eschew_ctime
110# undef ctime_r
111# define ctime_r eschew_ctime_r
112# endif
113
114# ifdef __cplusplus
115}
116# endif
117
118#endif