summaryrefslogtreecommitdiff
path: root/lib/time.in.h
blob: dd3b21273c9c00f04d263d103fe75cadf78c79b3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
/* A more-standard <time.h>.

   Copyright (C) 2007-2019 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, see <https://www.gnu.org/licenses/>.  */

#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
@PRAGMA_COLUMNS@

/* Don't get in the way of glibc when it includes time.h merely to
   declare a few standard symbols, rather than to declare all the
   symbols.  (However, skip this for MinGW as it treats __need_time_t
   incompatibly.)  Also, Solaris 8 <time.h> eventually includes itself
   recursively; if that is happening, just include the system <time.h>
   without adding our own declarations.  */
#if (((defined __need_time_t || defined __need_clock_t \
       || defined __need_timespec)                     \
      && !defined __MINGW32__)                         \
     || defined _@GUARD_PREFIX@_TIME_H)

# @INCLUDE_NEXT@ @NEXT_TIME_H@

#else

# define _@GUARD_PREFIX@_TIME_H

# @INCLUDE_NEXT@ @NEXT_TIME_H@

/* NetBSD 5.0 mis-defines NULL.  */
# include <stddef.h>

/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */

/* The definition of _GL_ARG_NONNULL is copied here.  */

/* The definition of _GL_WARN_ON_USE is copied here.  */

/* Some systems don't define struct timespec (e.g., AIX 4.1).
   Or they define it with the wrong member names or define it in <sys/time.h>
   (e.g., FreeBSD circa 1997).  Stock Mingw prior to 3.0 does not define it,
   but the pthreads-win32 library defines it in <pthread.h>.  */
# if ! @TIME_H_DEFINES_STRUCT_TIMESPEC@
#  if @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
#   include <sys/time.h>
#  elif @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
#   include <pthread.h>
#  elif @UNISTD_H_DEFINES_STRUCT_TIMESPEC@
#   include <unistd.h>
#  else

#   ifdef __cplusplus
extern "C" {
#   endif

#   if !GNULIB_defined_struct_timespec
#    undef timespec
#    define timespec rpl_timespec
struct timespec
{
  time_t tv_sec;
  long int tv_nsec;
};
#    define GNULIB_defined_struct_timespec 1
#   endif

#   ifdef __cplusplus
}
#   endif

#  endif
# endif

# if !GNULIB_defined_struct_time_t_must_be_integral
/* Per http://austingroupbugs.net/view.php?id=327, POSIX requires
   time_t to be an integer type, even though C99 permits floating
   point.  We don't know of any implementation that uses floating
   point, and it is much easier to write code that doesn't have to
   worry about that corner case, so we force the issue.  */
struct __time_t_must_be_integral {
  unsigned int __floating_time_t_unsupported : (time_t) 1;
};
#  define GNULIB_defined_struct_time_t_must_be_integral 1
# endif

/* Sleep for at least RQTP seconds unless interrupted,  If interrupted,
   return -1 and store the remaining time into RMTP.  See
   <http://www.opengroup.org/susv3xsh/nanosleep.html>.  */
# if @GNULIB_NANOSLEEP@
#  if @REPLACE_NANOSLEEP@
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    define nanosleep rpl_nanosleep
#   endif
_GL_FUNCDECL_RPL (nanosleep, int,
                  (struct timespec const *__rqtp, struct timespec *__rmtp)
                  _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (nanosleep, int,
                  (struct timespec const *__rqtp, struct timespec *__rmtp));
#  else
#   if ! @HAVE_NANOSLEEP@
_GL_FUNCDECL_SYS (nanosleep, int,
                  (struct timespec const *__rqtp, struct timespec *__rmtp)
                  _GL_ARG_NONNULL ((1)));
#   endif
_GL_CXXALIAS_SYS (nanosleep, int,
                  (struct timespec const *__rqtp, struct timespec *__rmtp));
#  endif
_GL_CXXALIASWARN (nanosleep);
# endif

/* Initialize time conversion information.  */
# if @GNULIB_TZSET@
#  if @REPLACE_TZSET@
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    undef tzset
#    define tzset rpl_tzset
#   endif
_GL_FUNCDECL_RPL (tzset, void, (void));
_GL_CXXALIAS_RPL (tzset, void, (void));
#  else
#   if ! @HAVE_TZSET@
_GL_FUNCDECL_SYS (tzset, void, (void));
#   endif
_GL_CXXALIAS_SYS (tzset, void, (void));
#  endif
_GL_CXXALIASWARN (tzset);
# endif

/* Return the 'time_t' representation of TP and normalize TP.  */
# if @GNULIB_MKTIME@
#  if @REPLACE_MKTIME@
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    define mktime rpl_mktime
#   endif
_GL_FUNCDECL_RPL (mktime, time_t, (struct tm *__tp) _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (mktime, time_t, (struct tm *__tp));
#  else
_GL_CXXALIAS_SYS (mktime, time_t, (struct tm *__tp));
#  endif
_GL_CXXALIASWARN (mktime);
# endif

/* Convert TIMER to RESULT, assuming local time and UTC respectively.  See
   <http://www.opengroup.org/susv3xsh/localtime_r.html> and
   <http://www.opengroup.org/susv3xsh/gmtime_r.html>.  */
# if @GNULIB_TIME_R@
#  if @REPLACE_LOCALTIME_R@
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    undef localtime_r
#    define localtime_r rpl_localtime_r
#   endif
_GL_FUNCDECL_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
                                             struct tm *restrict __result)
                                            _GL_ARG_NONNULL ((1, 2)));
_GL_CXXALIAS_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
                                             struct tm *restrict __result));
#  else
#   if ! @HAVE_DECL_LOCALTIME_R@
_GL_FUNCDECL_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
                                             struct tm *restrict __result)
                                            _GL_ARG_NONNULL ((1, 2)));
#   endif
_GL_CXXALIAS_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
                                             struct tm *restrict __result));
#  endif
#  if @HAVE_DECL_LOCALTIME_R@
_GL_CXXALIASWARN (localtime_r);
#  endif
#  if @REPLACE_LOCALTIME_R@
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    undef gmtime_r
#    define gmtime_r rpl_gmtime_r
#   endif
_GL_FUNCDECL_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
                                          struct tm *restrict __result)
                                         _GL_ARG_NONNULL ((1, 2)));
_GL_CXXALIAS_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
                                          struct tm *restrict __result));
#  else
#   if ! @HAVE_DECL_LOCALTIME_R@
_GL_FUNCDECL_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
                                          struct tm *restrict __result)
                                         _GL_ARG_NONNULL ((1, 2)));
#   endif
_GL_CXXALIAS_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
                                          struct tm *restrict __result));
#  endif
#  if @HAVE_DECL_LOCALTIME_R@
_GL_CXXALIASWARN (gmtime_r);
#  endif
# endif

/* Convert TIMER to RESULT, assuming local time and UTC respectively.  See
   <http://www.opengroup.org/susv3xsh/localtime.html> and
   <http://www.opengroup.org/susv3xsh/gmtime.html>.  */
# if @GNULIB_LOCALTIME@ || @REPLACE_LOCALTIME@
#  if @REPLACE_LOCALTIME@
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    undef localtime
#    define localtime rpl_localtime
#   endif
_GL_FUNCDECL_RPL (localtime, struct tm *, (time_t const *__timer)
                                          _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (localtime, struct tm *, (time_t const *__timer));
#  else
_GL_CXXALIAS_SYS (localtime, struct tm *, (time_t const *__timer));
#  endif
_GL_CXXALIASWARN (localtime);
# endif

# if 0 || @REPLACE_GMTIME@
#  if @REPLACE_GMTIME@
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    undef gmtime
#    define gmtime rpl_gmtime
#   endif
_GL_FUNCDECL_RPL (gmtime, struct tm *, (time_t const *__timer)
                                       _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (gmtime, struct tm *, (time_t const *__timer));
#  else
_GL_CXXALIAS_SYS (gmtime, struct tm *, (time_t const *__timer));
#  endif
_GL_CXXALIASWARN (gmtime);
# endif

/* Parse BUF as a timestamp, assuming FORMAT specifies its layout, and store
   the resulting broken-down time into TM.  See
   <http://www.opengroup.org/susv3xsh/strptime.html>.  */
# if @GNULIB_STRPTIME@
#  if ! @HAVE_STRPTIME@
_GL_FUNCDECL_SYS (strptime, char *, (char const *restrict __buf,
                                     char const *restrict __format,
                                     struct tm *restrict __tm)
                                    _GL_ARG_NONNULL ((1, 2, 3)));
#  endif
_GL_CXXALIAS_SYS (strptime, char *, (char const *restrict __buf,
                                     char const *restrict __format,
                                     struct tm *restrict __tm));
_GL_CXXALIASWARN (strptime);
# endif

/* Convert *TP to a date and time string.  See
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/ctime.html>.  */
# if @GNULIB_CTIME@
#  if @REPLACE_CTIME@
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    define ctime rpl_ctime
#   endif
_GL_FUNCDECL_RPL (ctime, char *, (time_t const *__tp)
                                 _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (ctime, char *, (time_t const *__tp));
#  else
_GL_CXXALIAS_SYS (ctime, char *, (time_t const *__tp));
#  endif
_GL_CXXALIASWARN (ctime);
# endif

/* Convert *TP to a date and time string.  See
   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/strftime.html>.  */
# if @GNULIB_STRFTIME@
#  if @REPLACE_STRFTIME@
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    define strftime rpl_strftime
#   endif
_GL_FUNCDECL_RPL (strftime, size_t, (char *__buf, size_t __bufsize,
                                     const char *__fmt, const struct tm *__tp)
                                    _GL_ARG_NONNULL ((1, 3, 4)));
_GL_CXXALIAS_RPL (strftime, size_t, (char *__buf, size_t __bufsize,
                                     const char *__fmt, const struct tm *__tp));
#  else
_GL_CXXALIAS_SYS (strftime, size_t, (char *__buf, size_t __bufsize,
                                     const char *__fmt, const struct tm *__tp));
#  endif
_GL_CXXALIASWARN (strftime);
# endif

# if defined _GNU_SOURCE && @GNULIB_TIME_RZ@ && ! @HAVE_TIMEZONE_T@
typedef struct tm_zone *timezone_t;
_GL_FUNCDECL_SYS (tzalloc, timezone_t, (char const *__name));
_GL_CXXALIAS_SYS (tzalloc, timezone_t, (char const *__name));
_GL_FUNCDECL_SYS (tzfree, void, (timezone_t __tz));
_GL_CXXALIAS_SYS (tzfree, void, (timezone_t __tz));
_GL_FUNCDECL_SYS (localtime_rz, struct tm *,
                  (timezone_t __tz, time_t const *restrict __timer,
                   struct tm *restrict __result) _GL_ARG_NONNULL ((2, 3)));
_GL_CXXALIAS_SYS (localtime_rz, struct tm *,
                  (timezone_t __tz, time_t const *restrict __timer,
                   struct tm *restrict __result));
_GL_FUNCDECL_SYS (mktime_z, time_t,
                  (timezone_t __tz, struct tm *restrict __result)
                  _GL_ARG_NONNULL ((2)));
_GL_CXXALIAS_SYS (mktime_z, time_t,
                  (timezone_t __tz, struct tm *restrict __result));
# endif

/* Convert TM to a time_t value, assuming UTC.  */
# if @GNULIB_TIMEGM@
#  if @REPLACE_TIMEGM@
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    undef timegm
#    define timegm rpl_timegm
#   endif
_GL_FUNCDECL_RPL (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (timegm, time_t, (struct tm *__tm));
#  else
#   if ! @HAVE_TIMEGM@
_GL_FUNCDECL_SYS (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
#   endif
_GL_CXXALIAS_SYS (timegm, time_t, (struct tm *__tm));
#  endif
_GL_CXXALIASWARN (timegm);
# endif

/* Encourage applications to avoid unsafe functions that can overrun
   buffers when given outlandish struct tm values.  Portable
   applications should use strftime (or even sprintf) instead.  */
# if defined GNULIB_POSIXCHECK
#  undef asctime
_GL_WARN_ON_USE (asctime, "asctime can overrun buffers in some cases - "
                 "better use strftime (or even sprintf) instead");
# endif
# if defined GNULIB_POSIXCHECK
#  undef asctime_r
_GL_WARN_ON_USE (asctime, "asctime_r can overrun buffers in some cases - "
                 "better use strftime (or even sprintf) instead");
# endif
# if defined GNULIB_POSIXCHECK
#  undef ctime
_GL_WARN_ON_USE (asctime, "ctime can overrun buffers in some cases - "
                 "better use strftime (or even sprintf) instead");
# endif
# if defined GNULIB_POSIXCHECK
#  undef ctime_r
_GL_WARN_ON_USE (asctime, "ctime_r can overrun buffers in some cases - "
                 "better use strftime (or even sprintf) instead");
# endif

#endif