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source: kBuild/vendor/grep/2.12/lib/time.in.h

Last change on this file was 2595, checked in by bird, 13 years ago

gnu grep version 2.12 (grep-2.12.tar.xz, md5sum=8d2f0346d08b13c18afb81f0e8aa1e2f)
  • Property svn:eol-style set to native
File size: 8.8 KB
Line 
1/* A more-standard <time.h>.
2
3 Copyright (C) 2007-2012 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, see <http://www.gnu.org/licenses/>. */
17
18#if __GNUC__ >= 3
19@PRAGMA_SYSTEM_HEADER@
20#endif
21@PRAGMA_COLUMNS@
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 _@GUARD_PREFIX@_TIME_H)
31
32# @INCLUDE_NEXT@ @NEXT_TIME_H@
33
34#else
35
36# define _@GUARD_PREFIX@_TIME_H
37
38# @INCLUDE_NEXT@ @NEXT_TIME_H@
39
40/* NetBSD 5.0 mis-defines NULL. */
41# include <stddef.h>
42
43/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
44
45/* The definition of _GL_ARG_NONNULL is copied here. */
46
47/* The definition of _GL_WARN_ON_USE is copied here. */
48
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). Stock Mingw does not define it, but the
52 pthreads-win32 library defines it in <pthread.h>. */
53# if ! @TIME_H_DEFINES_STRUCT_TIMESPEC@
54# if @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
55# include <sys/time.h>
56# elif @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
57# include <pthread.h>
58/* The pthreads-win32 <pthread.h> also defines a couple of broken macros. */
59# undef asctime_r
60# undef ctime_r
61# undef gmtime_r
62# undef localtime_r
63# undef rand_r
64# undef strtok_r
65# else
66
67# ifdef __cplusplus
68extern "C" {
69# endif
70
71# if !GNULIB_defined_struct_timespec
72# undef timespec
73# define timespec rpl_timespec
74struct timespec
75{
76 time_t tv_sec;
77 long int tv_nsec;
78};
79# define GNULIB_defined_struct_timespec 1
80# endif
81
82# ifdef __cplusplus
83}
84# endif
85
86# endif
87# endif
88
89# if !GNULIB_defined_struct_time_t_must_be_integral
90/* Per http://austingroupbugs.net/view.php?id=327, POSIX requires
91 time_t to be an integer type, even though C99 permits floating
92 point. We don't know of any implementation that uses floating
93 point, and it is much easier to write code that doesn't have to
94 worry about that corner case, so we force the issue. */
95struct __time_t_must_be_integral {
96 unsigned int __floating_time_t_unsupported : (time_t) 1;
97};
98# define GNULIB_defined_struct_time_t_must_be_integral 1
99# endif
100
101/* Sleep for at least RQTP seconds unless interrupted, If interrupted,
102 return -1 and store the remaining time into RMTP. See
103 <http://www.opengroup.org/susv3xsh/nanosleep.html>. */
104# if @GNULIB_NANOSLEEP@
105# if @REPLACE_NANOSLEEP@
106# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
107# define nanosleep rpl_nanosleep
108# endif
109_GL_FUNCDECL_RPL (nanosleep, int,
110 (struct timespec const *__rqtp, struct timespec *__rmtp)
111 _GL_ARG_NONNULL ((1)));
112_GL_CXXALIAS_RPL (nanosleep, int,
113 (struct timespec const *__rqtp, struct timespec *__rmtp));
114# else
115# if ! @HAVE_NANOSLEEP@
116_GL_FUNCDECL_SYS (nanosleep, int,
117 (struct timespec const *__rqtp, struct timespec *__rmtp)
118 _GL_ARG_NONNULL ((1)));
119# endif
120_GL_CXXALIAS_SYS (nanosleep, int,
121 (struct timespec const *__rqtp, struct timespec *__rmtp));
122# endif
123_GL_CXXALIASWARN (nanosleep);
124# endif
125
126/* Return the 'time_t' representation of TP and normalize TP. */
127# if @GNULIB_MKTIME@
128# if @REPLACE_MKTIME@
129# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
130# define mktime rpl_mktime
131# endif
132_GL_FUNCDECL_RPL (mktime, time_t, (struct tm *__tp) _GL_ARG_NONNULL ((1)));
133_GL_CXXALIAS_RPL (mktime, time_t, (struct tm *__tp));
134# else
135_GL_CXXALIAS_SYS (mktime, time_t, (struct tm *__tp));
136# endif
137_GL_CXXALIASWARN (mktime);
138# endif
139
140/* Convert TIMER to RESULT, assuming local time and UTC respectively. See
141 <http://www.opengroup.org/susv3xsh/localtime_r.html> and
142 <http://www.opengroup.org/susv3xsh/gmtime_r.html>. */
143# if @GNULIB_TIME_R@
144# if @REPLACE_LOCALTIME_R@
145# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
146# undef localtime_r
147# define localtime_r rpl_localtime_r
148# endif
149_GL_FUNCDECL_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
150 struct tm *restrict __result)
151 _GL_ARG_NONNULL ((1, 2)));
152_GL_CXXALIAS_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
153 struct tm *restrict __result));
154# else
155# if ! @HAVE_DECL_LOCALTIME_R@
156_GL_FUNCDECL_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
157 struct tm *restrict __result)
158 _GL_ARG_NONNULL ((1, 2)));
159# endif
160_GL_CXXALIAS_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
161 struct tm *restrict __result));
162# endif
163# if @HAVE_DECL_LOCALTIME_R@
164_GL_CXXALIASWARN (localtime_r);
165# endif
166# if @REPLACE_LOCALTIME_R@
167# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
168# undef gmtime_r
169# define gmtime_r rpl_gmtime_r
170# endif
171_GL_FUNCDECL_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
172 struct tm *restrict __result)
173 _GL_ARG_NONNULL ((1, 2)));
174_GL_CXXALIAS_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
175 struct tm *restrict __result));
176# else
177# if ! @HAVE_DECL_LOCALTIME_R@
178_GL_FUNCDECL_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
179 struct tm *restrict __result)
180 _GL_ARG_NONNULL ((1, 2)));
181# endif
182_GL_CXXALIAS_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
183 struct tm *restrict __result));
184# endif
185# if @HAVE_DECL_LOCALTIME_R@
186_GL_CXXALIASWARN (gmtime_r);
187# endif
188# endif
189
190/* Parse BUF as a time stamp, assuming FORMAT specifies its layout, and store
191 the resulting broken-down time into TM. See
192 <http://www.opengroup.org/susv3xsh/strptime.html>. */
193# if @GNULIB_STRPTIME@
194# if ! @HAVE_STRPTIME@
195_GL_FUNCDECL_SYS (strptime, char *, (char const *restrict __buf,
196 char const *restrict __format,
197 struct tm *restrict __tm)
198 _GL_ARG_NONNULL ((1, 2, 3)));
199# endif
200_GL_CXXALIAS_SYS (strptime, char *, (char const *restrict __buf,
201 char const *restrict __format,
202 struct tm *restrict __tm));
203_GL_CXXALIASWARN (strptime);
204# endif
205
206/* Convert TM to a time_t value, assuming UTC. */
207# if @GNULIB_TIMEGM@
208# if @REPLACE_TIMEGM@
209# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
210# undef timegm
211# define timegm rpl_timegm
212# endif
213_GL_FUNCDECL_RPL (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
214_GL_CXXALIAS_RPL (timegm, time_t, (struct tm *__tm));
215# else
216# if ! @HAVE_TIMEGM@
217_GL_FUNCDECL_SYS (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
218# endif
219_GL_CXXALIAS_SYS (timegm, time_t, (struct tm *__tm));
220# endif
221_GL_CXXALIASWARN (timegm);
222# endif
223
224/* Encourage applications to avoid unsafe functions that can overrun
225 buffers when given outlandish struct tm values. Portable
226 applications should use strftime (or even sprintf) instead. */
227# if defined GNULIB_POSIXCHECK
228# undef asctime
229_GL_WARN_ON_USE (asctime, "asctime can overrun buffers in some cases - "
230 "better use strftime (or even sprintf) instead");
231# endif
232# if defined GNULIB_POSIXCHECK
233# undef asctime_r
234_GL_WARN_ON_USE (asctime, "asctime_r can overrun buffers in some cases - "
235 "better use strftime (or even sprintf) instead");
236# endif
237# if defined GNULIB_POSIXCHECK
238# undef ctime
239_GL_WARN_ON_USE (asctime, "ctime can overrun buffers in some cases - "
240 "better use strftime (or even sprintf) instead");
241# endif
242# if defined GNULIB_POSIXCHECK
243# undef ctime_r
244_GL_WARN_ON_USE (asctime, "ctime_r can overrun buffers in some cases - "
245 "better use strftime (or even sprintf) instead");
246# endif
247
248#endif
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