Annotation of embedaddon/libiconv/srclib/time.in.h, revision 1.1.1.2
1.1 misho 1: /* A more-standard <time.h>.
2:
1.1.1.2 ! misho 3: Copyright (C) 2007-2019 Free Software Foundation, Inc.
1.1 misho 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
1.1.1.2 ! misho 16: along with this program; if not, see <https://www.gnu.org/licenses/>. */
1.1 misho 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
1.1.1.2 ! misho 25: symbols. (However, skip this for MinGW as it treats __need_time_t
! 26: incompatibly.) Also, Solaris 8 <time.h> eventually includes itself
1.1 misho 27: recursively; if that is happening, just include the system <time.h>
28: without adding our own declarations. */
1.1.1.2 ! misho 29: #if (((defined __need_time_t || defined __need_clock_t \
! 30: || defined __need_timespec) \
! 31: && !defined __MINGW32__) \
1.1 misho 32: || defined _@GUARD_PREFIX@_TIME_H)
33:
34: # @INCLUDE_NEXT@ @NEXT_TIME_H@
35:
36: #else
37:
38: # define _@GUARD_PREFIX@_TIME_H
39:
40: # @INCLUDE_NEXT@ @NEXT_TIME_H@
41:
42: /* NetBSD 5.0 mis-defines NULL. */
43: # include <stddef.h>
44:
45: /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
46:
47: /* The definition of _GL_ARG_NONNULL is copied here. */
48:
49: /* The definition of _GL_WARN_ON_USE is copied here. */
50:
1.1.1.2 ! misho 51: /* Some systems don't define struct timespec (e.g., AIX 4.1).
1.1 misho 52: Or they define it with the wrong member names or define it in <sys/time.h>
1.1.1.2 ! misho 53: (e.g., FreeBSD circa 1997). Stock Mingw prior to 3.0 does not define it,
! 54: but the pthreads-win32 library defines it in <pthread.h>. */
1.1 misho 55: # if ! @TIME_H_DEFINES_STRUCT_TIMESPEC@
56: # if @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
57: # include <sys/time.h>
58: # elif @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
59: # include <pthread.h>
1.1.1.2 ! misho 60: # elif @UNISTD_H_DEFINES_STRUCT_TIMESPEC@
! 61: # include <unistd.h>
1.1 misho 62: # else
63:
64: # ifdef __cplusplus
65: extern "C" {
66: # endif
67:
68: # if !GNULIB_defined_struct_timespec
69: # undef timespec
70: # define timespec rpl_timespec
71: struct timespec
72: {
73: time_t tv_sec;
74: long int tv_nsec;
75: };
76: # define GNULIB_defined_struct_timespec 1
77: # endif
78:
79: # ifdef __cplusplus
80: }
81: # endif
82:
83: # endif
84: # endif
85:
86: # if !GNULIB_defined_struct_time_t_must_be_integral
87: /* Per http://austingroupbugs.net/view.php?id=327, POSIX requires
88: time_t to be an integer type, even though C99 permits floating
89: point. We don't know of any implementation that uses floating
90: point, and it is much easier to write code that doesn't have to
91: worry about that corner case, so we force the issue. */
92: struct __time_t_must_be_integral {
93: unsigned int __floating_time_t_unsupported : (time_t) 1;
94: };
95: # define GNULIB_defined_struct_time_t_must_be_integral 1
96: # endif
97:
98: /* Sleep for at least RQTP seconds unless interrupted, If interrupted,
99: return -1 and store the remaining time into RMTP. See
100: <http://www.opengroup.org/susv3xsh/nanosleep.html>. */
101: # if @GNULIB_NANOSLEEP@
102: # if @REPLACE_NANOSLEEP@
103: # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
104: # define nanosleep rpl_nanosleep
105: # endif
106: _GL_FUNCDECL_RPL (nanosleep, int,
107: (struct timespec const *__rqtp, struct timespec *__rmtp)
108: _GL_ARG_NONNULL ((1)));
109: _GL_CXXALIAS_RPL (nanosleep, int,
110: (struct timespec const *__rqtp, struct timespec *__rmtp));
111: # else
112: # if ! @HAVE_NANOSLEEP@
113: _GL_FUNCDECL_SYS (nanosleep, int,
114: (struct timespec const *__rqtp, struct timespec *__rmtp)
115: _GL_ARG_NONNULL ((1)));
116: # endif
117: _GL_CXXALIAS_SYS (nanosleep, int,
118: (struct timespec const *__rqtp, struct timespec *__rmtp));
119: # endif
120: _GL_CXXALIASWARN (nanosleep);
121: # endif
122:
1.1.1.2 ! misho 123: /* Initialize time conversion information. */
! 124: # if @GNULIB_TZSET@
! 125: # if @REPLACE_TZSET@
! 126: # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
! 127: # undef tzset
! 128: # define tzset rpl_tzset
! 129: # endif
! 130: _GL_FUNCDECL_RPL (tzset, void, (void));
! 131: _GL_CXXALIAS_RPL (tzset, void, (void));
! 132: # else
! 133: # if ! @HAVE_TZSET@
! 134: _GL_FUNCDECL_SYS (tzset, void, (void));
! 135: # endif
! 136: _GL_CXXALIAS_SYS (tzset, void, (void));
! 137: # endif
! 138: _GL_CXXALIASWARN (tzset);
! 139: # endif
! 140:
1.1 misho 141: /* Return the 'time_t' representation of TP and normalize TP. */
142: # if @GNULIB_MKTIME@
143: # if @REPLACE_MKTIME@
144: # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
145: # define mktime rpl_mktime
146: # endif
147: _GL_FUNCDECL_RPL (mktime, time_t, (struct tm *__tp) _GL_ARG_NONNULL ((1)));
148: _GL_CXXALIAS_RPL (mktime, time_t, (struct tm *__tp));
149: # else
150: _GL_CXXALIAS_SYS (mktime, time_t, (struct tm *__tp));
151: # endif
152: _GL_CXXALIASWARN (mktime);
153: # endif
154:
155: /* Convert TIMER to RESULT, assuming local time and UTC respectively. See
156: <http://www.opengroup.org/susv3xsh/localtime_r.html> and
157: <http://www.opengroup.org/susv3xsh/gmtime_r.html>. */
158: # if @GNULIB_TIME_R@
159: # if @REPLACE_LOCALTIME_R@
160: # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
161: # undef localtime_r
162: # define localtime_r rpl_localtime_r
163: # endif
164: _GL_FUNCDECL_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
165: struct tm *restrict __result)
166: _GL_ARG_NONNULL ((1, 2)));
167: _GL_CXXALIAS_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
168: struct tm *restrict __result));
169: # else
170: # if ! @HAVE_DECL_LOCALTIME_R@
171: _GL_FUNCDECL_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
172: struct tm *restrict __result)
173: _GL_ARG_NONNULL ((1, 2)));
174: # endif
175: _GL_CXXALIAS_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
176: struct tm *restrict __result));
177: # endif
178: # if @HAVE_DECL_LOCALTIME_R@
179: _GL_CXXALIASWARN (localtime_r);
180: # endif
181: # if @REPLACE_LOCALTIME_R@
182: # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
183: # undef gmtime_r
184: # define gmtime_r rpl_gmtime_r
185: # endif
186: _GL_FUNCDECL_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
187: struct tm *restrict __result)
188: _GL_ARG_NONNULL ((1, 2)));
189: _GL_CXXALIAS_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
190: struct tm *restrict __result));
191: # else
192: # if ! @HAVE_DECL_LOCALTIME_R@
193: _GL_FUNCDECL_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
194: struct tm *restrict __result)
195: _GL_ARG_NONNULL ((1, 2)));
196: # endif
197: _GL_CXXALIAS_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
198: struct tm *restrict __result));
199: # endif
200: # if @HAVE_DECL_LOCALTIME_R@
201: _GL_CXXALIASWARN (gmtime_r);
202: # endif
203: # endif
204:
1.1.1.2 ! misho 205: /* Convert TIMER to RESULT, assuming local time and UTC respectively. See
! 206: <http://www.opengroup.org/susv3xsh/localtime.html> and
! 207: <http://www.opengroup.org/susv3xsh/gmtime.html>. */
! 208: # if @GNULIB_LOCALTIME@ || @REPLACE_LOCALTIME@
! 209: # if @REPLACE_LOCALTIME@
! 210: # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
! 211: # undef localtime
! 212: # define localtime rpl_localtime
! 213: # endif
! 214: _GL_FUNCDECL_RPL (localtime, struct tm *, (time_t const *__timer)
! 215: _GL_ARG_NONNULL ((1)));
! 216: _GL_CXXALIAS_RPL (localtime, struct tm *, (time_t const *__timer));
! 217: # else
! 218: _GL_CXXALIAS_SYS (localtime, struct tm *, (time_t const *__timer));
! 219: # endif
! 220: _GL_CXXALIASWARN (localtime);
! 221: # endif
! 222:
! 223: # if 0 || @REPLACE_GMTIME@
! 224: # if @REPLACE_GMTIME@
! 225: # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
! 226: # undef gmtime
! 227: # define gmtime rpl_gmtime
! 228: # endif
! 229: _GL_FUNCDECL_RPL (gmtime, struct tm *, (time_t const *__timer)
! 230: _GL_ARG_NONNULL ((1)));
! 231: _GL_CXXALIAS_RPL (gmtime, struct tm *, (time_t const *__timer));
! 232: # else
! 233: _GL_CXXALIAS_SYS (gmtime, struct tm *, (time_t const *__timer));
! 234: # endif
! 235: _GL_CXXALIASWARN (gmtime);
! 236: # endif
! 237:
! 238: /* Parse BUF as a timestamp, assuming FORMAT specifies its layout, and store
1.1 misho 239: the resulting broken-down time into TM. See
240: <http://www.opengroup.org/susv3xsh/strptime.html>. */
241: # if @GNULIB_STRPTIME@
242: # if ! @HAVE_STRPTIME@
243: _GL_FUNCDECL_SYS (strptime, char *, (char const *restrict __buf,
244: char const *restrict __format,
245: struct tm *restrict __tm)
246: _GL_ARG_NONNULL ((1, 2, 3)));
247: # endif
248: _GL_CXXALIAS_SYS (strptime, char *, (char const *restrict __buf,
249: char const *restrict __format,
250: struct tm *restrict __tm));
251: _GL_CXXALIASWARN (strptime);
252: # endif
253:
1.1.1.2 ! misho 254: /* Convert *TP to a date and time string. See
! 255: <http://pubs.opengroup.org/onlinepubs/9699919799/functions/ctime.html>. */
! 256: # if @GNULIB_CTIME@
! 257: # if @REPLACE_CTIME@
! 258: # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
! 259: # define ctime rpl_ctime
! 260: # endif
! 261: _GL_FUNCDECL_RPL (ctime, char *, (time_t const *__tp)
! 262: _GL_ARG_NONNULL ((1)));
! 263: _GL_CXXALIAS_RPL (ctime, char *, (time_t const *__tp));
! 264: # else
! 265: _GL_CXXALIAS_SYS (ctime, char *, (time_t const *__tp));
! 266: # endif
! 267: _GL_CXXALIASWARN (ctime);
! 268: # endif
! 269:
! 270: /* Convert *TP to a date and time string. See
! 271: <http://pubs.opengroup.org/onlinepubs/9699919799/functions/strftime.html>. */
! 272: # if @GNULIB_STRFTIME@
! 273: # if @REPLACE_STRFTIME@
! 274: # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
! 275: # define strftime rpl_strftime
! 276: # endif
! 277: _GL_FUNCDECL_RPL (strftime, size_t, (char *__buf, size_t __bufsize,
! 278: const char *__fmt, const struct tm *__tp)
! 279: _GL_ARG_NONNULL ((1, 3, 4)));
! 280: _GL_CXXALIAS_RPL (strftime, size_t, (char *__buf, size_t __bufsize,
! 281: const char *__fmt, const struct tm *__tp));
! 282: # else
! 283: _GL_CXXALIAS_SYS (strftime, size_t, (char *__buf, size_t __bufsize,
! 284: const char *__fmt, const struct tm *__tp));
! 285: # endif
! 286: _GL_CXXALIASWARN (strftime);
! 287: # endif
! 288:
! 289: # if defined _GNU_SOURCE && @GNULIB_TIME_RZ@ && ! @HAVE_TIMEZONE_T@
! 290: typedef struct tm_zone *timezone_t;
! 291: _GL_FUNCDECL_SYS (tzalloc, timezone_t, (char const *__name));
! 292: _GL_CXXALIAS_SYS (tzalloc, timezone_t, (char const *__name));
! 293: _GL_FUNCDECL_SYS (tzfree, void, (timezone_t __tz));
! 294: _GL_CXXALIAS_SYS (tzfree, void, (timezone_t __tz));
! 295: _GL_FUNCDECL_SYS (localtime_rz, struct tm *,
! 296: (timezone_t __tz, time_t const *restrict __timer,
! 297: struct tm *restrict __result) _GL_ARG_NONNULL ((2, 3)));
! 298: _GL_CXXALIAS_SYS (localtime_rz, struct tm *,
! 299: (timezone_t __tz, time_t const *restrict __timer,
! 300: struct tm *restrict __result));
! 301: _GL_FUNCDECL_SYS (mktime_z, time_t,
! 302: (timezone_t __tz, struct tm *restrict __result)
! 303: _GL_ARG_NONNULL ((2)));
! 304: _GL_CXXALIAS_SYS (mktime_z, time_t,
! 305: (timezone_t __tz, struct tm *restrict __result));
! 306: # endif
! 307:
1.1 misho 308: /* Convert TM to a time_t value, assuming UTC. */
309: # if @GNULIB_TIMEGM@
310: # if @REPLACE_TIMEGM@
311: # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
312: # undef timegm
313: # define timegm rpl_timegm
314: # endif
315: _GL_FUNCDECL_RPL (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
316: _GL_CXXALIAS_RPL (timegm, time_t, (struct tm *__tm));
317: # else
318: # if ! @HAVE_TIMEGM@
319: _GL_FUNCDECL_SYS (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
320: # endif
321: _GL_CXXALIAS_SYS (timegm, time_t, (struct tm *__tm));
322: # endif
323: _GL_CXXALIASWARN (timegm);
324: # endif
325:
326: /* Encourage applications to avoid unsafe functions that can overrun
327: buffers when given outlandish struct tm values. Portable
328: applications should use strftime (or even sprintf) instead. */
329: # if defined GNULIB_POSIXCHECK
330: # undef asctime
331: _GL_WARN_ON_USE (asctime, "asctime can overrun buffers in some cases - "
332: "better use strftime (or even sprintf) instead");
333: # endif
334: # if defined GNULIB_POSIXCHECK
335: # undef asctime_r
336: _GL_WARN_ON_USE (asctime, "asctime_r can overrun buffers in some cases - "
337: "better use strftime (or even sprintf) instead");
338: # endif
339: # if defined GNULIB_POSIXCHECK
340: # undef ctime
341: _GL_WARN_ON_USE (asctime, "ctime can overrun buffers in some cases - "
342: "better use strftime (or even sprintf) instead");
343: # endif
344: # if defined GNULIB_POSIXCHECK
345: # undef ctime_r
346: _GL_WARN_ON_USE (asctime, "ctime_r can overrun buffers in some cases - "
347: "better use strftime (or even sprintf) instead");
348: # endif
349:
350: #endif
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