| 1 | /* A more-standard <time.h>.
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| 2 |
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| 3 | Copyright (C) 2007-2012 Free Software Foundation, Inc.
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| 4 |
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| 5 | This program is free software; you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 3, or (at your option)
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| 8 | any later version.
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| 9 |
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| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. */
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| 17 |
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| 18 | #if __GNUC__ >= 3
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| 19 | @PRAGMA_SYSTEM_HEADER@
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| 20 | #endif
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| 21 | @PRAGMA_COLUMNS@
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| 22 |
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| 23 | /* Don't get in the way of glibc when it includes time.h merely to
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| 24 | declare a few standard symbols, rather than to declare all the
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| 25 | symbols. Also, Solaris 8 <time.h> eventually includes itself
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| 26 | recursively; if that is happening, just include the system <time.h>
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| 27 | without adding our own declarations. */
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| 28 | #if (defined __need_time_t || defined __need_clock_t \
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| 29 | || defined __need_timespec \
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| 30 | || defined _@GUARD_PREFIX@_TIME_H)
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| 31 |
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| 32 | # @INCLUDE_NEXT@ @NEXT_TIME_H@
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| 33 |
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| 34 | #else
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| 35 |
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| 36 | # define _@GUARD_PREFIX@_TIME_H
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| 37 |
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| 38 | # @INCLUDE_NEXT@ @NEXT_TIME_H@
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| 39 |
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| 40 | /* NetBSD 5.0 mis-defines NULL. */
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| 41 | # include <stddef.h>
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| 42 |
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| 43 | /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
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| 44 |
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| 45 | /* The definition of _GL_ARG_NONNULL is copied here. */
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| 46 |
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| 47 | /* The definition of _GL_WARN_ON_USE is copied here. */
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| 48 |
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| 49 | /* Some systems don't define struct timespec (e.g., AIX 4.1, Ultrix 4.3).
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| 50 | Or they define it with the wrong member names or define it in <sys/time.h>
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| 51 | (e.g., FreeBSD circa 1997). Stock Mingw does not define it, but the
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| 52 | pthreads-win32 library defines it in <pthread.h>. */
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| 53 | # if ! @TIME_H_DEFINES_STRUCT_TIMESPEC@
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| 54 | # if @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@
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| 55 | # include <sys/time.h>
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| 56 | # elif @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
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| 57 | # include <pthread.h>
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| 58 | /* The pthreads-win32 <pthread.h> also defines a couple of broken macros. */
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| 59 | # undef asctime_r
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| 60 | # undef ctime_r
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| 61 | # undef gmtime_r
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| 62 | # undef localtime_r
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| 63 | # undef rand_r
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| 64 | # undef strtok_r
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| 65 | # else
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| 66 |
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| 67 | # ifdef __cplusplus
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| 68 | extern "C" {
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| 69 | # endif
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| 70 |
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| 71 | # if !GNULIB_defined_struct_timespec
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| 72 | # undef timespec
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| 73 | # define timespec rpl_timespec
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| 74 | struct timespec
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| 75 | {
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| 76 | time_t tv_sec;
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| 77 | long int tv_nsec;
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| 78 | };
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| 79 | # define GNULIB_defined_struct_timespec 1
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| 80 | # endif
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| 81 |
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| 82 | # ifdef __cplusplus
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| 83 | }
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| 84 | # endif
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| 85 |
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| 86 | # endif
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| 87 | # endif
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| 88 |
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| 89 | # if !GNULIB_defined_struct_time_t_must_be_integral
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| 90 | /* Per http://austingroupbugs.net/view.php?id=327, POSIX requires
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| 91 | time_t to be an integer type, even though C99 permits floating
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| 92 | point. We don't know of any implementation that uses floating
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| 93 | point, and it is much easier to write code that doesn't have to
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| 94 | worry about that corner case, so we force the issue. */
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| 95 | struct __time_t_must_be_integral {
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| 96 | unsigned int __floating_time_t_unsupported : (time_t) 1;
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| 97 | };
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| 98 | # define GNULIB_defined_struct_time_t_must_be_integral 1
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| 99 | # endif
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| 100 |
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| 101 | /* Sleep for at least RQTP seconds unless interrupted, If interrupted,
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| 102 | return -1 and store the remaining time into RMTP. See
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| 103 | <http://www.opengroup.org/susv3xsh/nanosleep.html>. */
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| 104 | # if @GNULIB_NANOSLEEP@
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| 105 | # if @REPLACE_NANOSLEEP@
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| 106 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 107 | # define nanosleep rpl_nanosleep
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| 108 | # endif
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| 109 | _GL_FUNCDECL_RPL (nanosleep, int,
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| 110 | (struct timespec const *__rqtp, struct timespec *__rmtp)
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| 111 | _GL_ARG_NONNULL ((1)));
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| 112 | _GL_CXXALIAS_RPL (nanosleep, int,
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| 113 | (struct timespec const *__rqtp, struct timespec *__rmtp));
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| 114 | # else
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| 115 | # if ! @HAVE_NANOSLEEP@
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| 116 | _GL_FUNCDECL_SYS (nanosleep, int,
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| 117 | (struct timespec const *__rqtp, struct timespec *__rmtp)
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| 118 | _GL_ARG_NONNULL ((1)));
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| 119 | # endif
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| 120 | _GL_CXXALIAS_SYS (nanosleep, int,
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| 121 | (struct timespec const *__rqtp, struct timespec *__rmtp));
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| 122 | # endif
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| 123 | _GL_CXXALIASWARN (nanosleep);
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| 124 | # endif
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| 125 |
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| 126 | /* Return the 'time_t' representation of TP and normalize TP. */
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| 127 | # if @GNULIB_MKTIME@
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| 128 | # if @REPLACE_MKTIME@
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| 129 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 130 | # define mktime rpl_mktime
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| 131 | # endif
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| 132 | _GL_FUNCDECL_RPL (mktime, time_t, (struct tm *__tp) _GL_ARG_NONNULL ((1)));
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| 133 | _GL_CXXALIAS_RPL (mktime, time_t, (struct tm *__tp));
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| 134 | # else
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| 135 | _GL_CXXALIAS_SYS (mktime, time_t, (struct tm *__tp));
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| 136 | # endif
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| 137 | _GL_CXXALIASWARN (mktime);
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| 138 | # endif
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| 139 |
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| 140 | /* Convert TIMER to RESULT, assuming local time and UTC respectively. See
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| 141 | <http://www.opengroup.org/susv3xsh/localtime_r.html> and
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| 142 | <http://www.opengroup.org/susv3xsh/gmtime_r.html>. */
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| 143 | # if @GNULIB_TIME_R@
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| 144 | # if @REPLACE_LOCALTIME_R@
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| 145 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 146 | # undef localtime_r
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| 147 | # define localtime_r rpl_localtime_r
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| 148 | # endif
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| 149 | _GL_FUNCDECL_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
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| 150 | struct tm *restrict __result)
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| 151 | _GL_ARG_NONNULL ((1, 2)));
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| 152 | _GL_CXXALIAS_RPL (localtime_r, struct tm *, (time_t const *restrict __timer,
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| 153 | struct tm *restrict __result));
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| 154 | # else
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| 155 | # if ! @HAVE_DECL_LOCALTIME_R@
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| 156 | _GL_FUNCDECL_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
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| 157 | struct tm *restrict __result)
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| 158 | _GL_ARG_NONNULL ((1, 2)));
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| 159 | # endif
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| 160 | _GL_CXXALIAS_SYS (localtime_r, struct tm *, (time_t const *restrict __timer,
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| 161 | struct tm *restrict __result));
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| 162 | # endif
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| 163 | # if @HAVE_DECL_LOCALTIME_R@
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| 164 | _GL_CXXALIASWARN (localtime_r);
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| 165 | # endif
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| 166 | # if @REPLACE_LOCALTIME_R@
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| 167 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 168 | # undef gmtime_r
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| 169 | # define gmtime_r rpl_gmtime_r
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| 170 | # endif
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| 171 | _GL_FUNCDECL_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
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| 172 | struct tm *restrict __result)
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| 173 | _GL_ARG_NONNULL ((1, 2)));
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| 174 | _GL_CXXALIAS_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer,
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| 175 | struct tm *restrict __result));
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| 176 | # else
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| 177 | # if ! @HAVE_DECL_LOCALTIME_R@
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| 178 | _GL_FUNCDECL_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
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| 179 | struct tm *restrict __result)
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| 180 | _GL_ARG_NONNULL ((1, 2)));
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| 181 | # endif
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| 182 | _GL_CXXALIAS_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer,
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| 183 | struct tm *restrict __result));
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| 184 | # endif
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| 185 | # if @HAVE_DECL_LOCALTIME_R@
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| 186 | _GL_CXXALIASWARN (gmtime_r);
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| 187 | # endif
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| 188 | # endif
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| 189 |
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| 190 | /* Parse BUF as a time stamp, assuming FORMAT specifies its layout, and store
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| 191 | the resulting broken-down time into TM. See
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| 192 | <http://www.opengroup.org/susv3xsh/strptime.html>. */
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| 193 | # if @GNULIB_STRPTIME@
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| 194 | # if ! @HAVE_STRPTIME@
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| 195 | _GL_FUNCDECL_SYS (strptime, char *, (char const *restrict __buf,
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| 196 | char const *restrict __format,
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| 197 | struct tm *restrict __tm)
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| 198 | _GL_ARG_NONNULL ((1, 2, 3)));
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| 199 | # endif
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| 200 | _GL_CXXALIAS_SYS (strptime, char *, (char const *restrict __buf,
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| 201 | char const *restrict __format,
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| 202 | struct tm *restrict __tm));
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| 203 | _GL_CXXALIASWARN (strptime);
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| 204 | # endif
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| 205 |
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| 206 | /* Convert TM to a time_t value, assuming UTC. */
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| 207 | # if @GNULIB_TIMEGM@
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| 208 | # if @REPLACE_TIMEGM@
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| 209 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 210 | # undef timegm
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| 211 | # define timegm rpl_timegm
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| 212 | # endif
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| 213 | _GL_FUNCDECL_RPL (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
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| 214 | _GL_CXXALIAS_RPL (timegm, time_t, (struct tm *__tm));
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| 215 | # else
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| 216 | # if ! @HAVE_TIMEGM@
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| 217 | _GL_FUNCDECL_SYS (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1)));
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| 218 | # endif
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| 219 | _GL_CXXALIAS_SYS (timegm, time_t, (struct tm *__tm));
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| 220 | # endif
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| 221 | _GL_CXXALIASWARN (timegm);
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| 222 | # endif
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| 223 |
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| 224 | /* Encourage applications to avoid unsafe functions that can overrun
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| 225 | buffers when given outlandish struct tm values. Portable
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| 226 | applications should use strftime (or even sprintf) instead. */
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| 227 | # if defined GNULIB_POSIXCHECK
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| 228 | # undef asctime
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| 229 | _GL_WARN_ON_USE (asctime, "asctime can overrun buffers in some cases - "
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| 230 | "better use strftime (or even sprintf) instead");
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| 231 | # endif
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| 232 | # if defined GNULIB_POSIXCHECK
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| 233 | # undef asctime_r
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| 234 | _GL_WARN_ON_USE (asctime, "asctime_r can overrun buffers in some cases - "
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| 235 | "better use strftime (or even sprintf) instead");
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| 236 | # endif
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| 237 | # if defined GNULIB_POSIXCHECK
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| 238 | # undef ctime
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| 239 | _GL_WARN_ON_USE (asctime, "ctime can overrun buffers in some cases - "
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| 240 | "better use strftime (or even sprintf) instead");
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| 241 | # endif
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| 242 | # if defined GNULIB_POSIXCHECK
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| 243 | # undef ctime_r
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| 244 | _GL_WARN_ON_USE (asctime, "ctime_r can overrun buffers in some cases - "
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| 245 | "better use strftime (or even sprintf) instead");
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| 246 | # endif
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| 247 |
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| 248 | #endif
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