| 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 |
| 68 | extern "C" { |
| 69 | # endif |
| 70 | |
| 71 | # if !GNULIB_defined_struct_timespec |
| 72 | # undef timespec |
| 73 | # define timespec rpl_timespec |
| 74 | struct 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. */ |
| 95 | struct __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 |