1/* A more-standard <time.h>. 2 3 Copyright (C) 2007-2011 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, write to the Free Software Foundation, 17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 18 19#if __GNUC__ >= 3 20@PRAGMA_SYSTEM_HEADER@ 21#endif 22@PRAGMA_COLUMNS@ 23 24/* Don't get in the way of glibc when it includes time.h merely to 25 declare a few standard symbols, rather than to declare all the 26 symbols. Also, Solaris 8 <time.h> eventually includes itself 27 recursively; if that is happening, just include the system <time.h> 28 without adding our own declarations. */ 29#if (defined __need_time_t || defined __need_clock_t \ 30 || defined __need_timespec \ 31 || defined _@GUARD_PREFIX@_TIME_H) 32 33# @INCLUDE_NEXT@ @NEXT_TIME_H@ 34 35#else 36 37# define _@GUARD_PREFIX@_TIME_H 38 39# @INCLUDE_NEXT@ @NEXT_TIME_H@ 40 41/* NetBSD 5.0 mis-defines NULL. */ 42# include <stddef.h> 43 44/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */ 45 46/* The definition of _GL_ARG_NONNULL is copied here. */ 47 48/* The definition of _GL_WARN_ON_USE is copied here. */ 49 50/* Some systems don't define struct timespec (e.g., AIX 4.1, Ultrix 4.3). 51 Or they define it with the wrong member names or define it in <sys/time.h> 52 (e.g., FreeBSD circa 1997). Stock Mingw does not define it, but the 53 pthreads-win32 library defines it in <pthread.h>. */ 54# if ! @TIME_H_DEFINES_STRUCT_TIMESPEC@ 55# if @SYS_TIME_H_DEFINES_STRUCT_TIMESPEC@ 56# include <sys/time.h> 57# elif @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@ 58# include <pthread.h> 59/* The pthreads-win32 <pthread.h> also defines a couple of broken macros. */ 60# undef asctime_r 61# undef ctime_r 62# undef gmtime_r 63# undef localtime_r 64# undef rand_r 65# undef strtok_r 66# else 67 68# ifdef __cplusplus 69extern "C" { 70# endif 71 72# if !GNULIB_defined_struct_timespec 73# undef timespec 74# define timespec rpl_timespec 75struct timespec 76{ 77 time_t tv_sec; 78 long int tv_nsec; 79}; 80# define GNULIB_defined_struct_timespec 1 81# endif 82 83# ifdef __cplusplus 84} 85# endif 86 87# endif 88# endif 89 90# if !GNULIB_defined_struct_time_t_must_be_integral 91/* Per http://austingroupbugs.net/view.php?id=327, POSIX requires 92 time_t to be an integer type, even though C99 permits floating 93 point. We don't know of any implementation that uses floating 94 point, and it is much easier to write code that doesn't have to 95 worry about that corner case, so we force the issue. */ 96struct __time_t_must_be_integral { 97 unsigned int __floating_time_t_unsupported : (time_t) 1; 98}; 99# define GNULIB_defined_struct_time_t_must_be_integral 1 100# endif 101 102/* Sleep for at least RQTP seconds unless interrupted, If interrupted, 103 return -1 and store the remaining time into RMTP. See 104 <http://www.opengroup.org/susv3xsh/nanosleep.html>. */ 105# if @GNULIB_NANOSLEEP@ 106# if @REPLACE_NANOSLEEP@ 107# if !(defined __cplusplus && defined GNULIB_NAMESPACE) 108# define nanosleep rpl_nanosleep 109# endif 110_GL_FUNCDECL_RPL (nanosleep, int, 111 (struct timespec const *__rqtp, struct timespec *__rmtp) 112 _GL_ARG_NONNULL ((1))); 113_GL_CXXALIAS_RPL (nanosleep, int, 114 (struct timespec const *__rqtp, struct timespec *__rmtp)); 115# else 116# if ! @HAVE_NANOSLEEP@ 117_GL_FUNCDECL_SYS (nanosleep, int, 118 (struct timespec const *__rqtp, struct timespec *__rmtp) 119 _GL_ARG_NONNULL ((1))); 120# endif 121_GL_CXXALIAS_SYS (nanosleep, int, 122 (struct timespec const *__rqtp, struct timespec *__rmtp)); 123# endif 124_GL_CXXALIASWARN (nanosleep); 125# endif 126 127/* Return the 'time_t' representation of TP and normalize TP. */ 128# if @GNULIB_MKTIME@ 129# if @REPLACE_MKTIME@ 130# if !(defined __cplusplus && defined GNULIB_NAMESPACE) 131# define mktime rpl_mktime 132# endif 133_GL_FUNCDECL_RPL (mktime, time_t, (struct tm *__tp) _GL_ARG_NONNULL ((1))); 134_GL_CXXALIAS_RPL (mktime, time_t, (struct tm *__tp)); 135# else 136_GL_CXXALIAS_SYS (mktime, time_t, (struct tm *__tp)); 137# endif 138_GL_CXXALIASWARN (mktime); 139# endif 140 141/* Convert TIMER to RESULT, assuming local time and UTC respectively. See 142 <http://www.opengroup.org/susv3xsh/localtime_r.html> and 143 <http://www.opengroup.org/susv3xsh/gmtime_r.html>. */ 144# if @GNULIB_TIME_R@ 145# if @REPLACE_LOCALTIME_R@ 146# if !(defined __cplusplus && defined GNULIB_NAMESPACE) 147# undef localtime_r 148# define localtime_r rpl_localtime_r 149# endif 150_GL_FUNCDECL_RPL (localtime_r, struct tm *, (time_t const *restrict __timer, 151 struct tm *restrict __result) 152 _GL_ARG_NONNULL ((1, 2))); 153_GL_CXXALIAS_RPL (localtime_r, struct tm *, (time_t const *restrict __timer, 154 struct tm *restrict __result)); 155# else 156# if ! @HAVE_DECL_LOCALTIME_R@ 157_GL_FUNCDECL_SYS (localtime_r, struct tm *, (time_t const *restrict __timer, 158 struct tm *restrict __result) 159 _GL_ARG_NONNULL ((1, 2))); 160# endif 161_GL_CXXALIAS_SYS (localtime_r, struct tm *, (time_t const *restrict __timer, 162 struct tm *restrict __result)); 163# endif 164# if @HAVE_DECL_LOCALTIME_R@ 165_GL_CXXALIASWARN (localtime_r); 166# endif 167# if @REPLACE_LOCALTIME_R@ 168# if !(defined __cplusplus && defined GNULIB_NAMESPACE) 169# undef gmtime_r 170# define gmtime_r rpl_gmtime_r 171# endif 172_GL_FUNCDECL_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer, 173 struct tm *restrict __result) 174 _GL_ARG_NONNULL ((1, 2))); 175_GL_CXXALIAS_RPL (gmtime_r, struct tm *, (time_t const *restrict __timer, 176 struct tm *restrict __result)); 177# else 178# if ! @HAVE_DECL_LOCALTIME_R@ 179_GL_FUNCDECL_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer, 180 struct tm *restrict __result) 181 _GL_ARG_NONNULL ((1, 2))); 182# endif 183_GL_CXXALIAS_SYS (gmtime_r, struct tm *, (time_t const *restrict __timer, 184 struct tm *restrict __result)); 185# endif 186# if @HAVE_DECL_LOCALTIME_R@ 187_GL_CXXALIASWARN (gmtime_r); 188# endif 189# endif 190 191/* Parse BUF as a time stamp, assuming FORMAT specifies its layout, and store 192 the resulting broken-down time into TM. See 193 <http://www.opengroup.org/susv3xsh/strptime.html>. */ 194# if @GNULIB_STRPTIME@ 195# if ! @HAVE_STRPTIME@ 196_GL_FUNCDECL_SYS (strptime, char *, (char const *restrict __buf, 197 char const *restrict __format, 198 struct tm *restrict __tm) 199 _GL_ARG_NONNULL ((1, 2, 3))); 200# endif 201_GL_CXXALIAS_SYS (strptime, char *, (char const *restrict __buf, 202 char const *restrict __format, 203 struct tm *restrict __tm)); 204_GL_CXXALIASWARN (strptime); 205# endif 206 207/* Convert TM to a time_t value, assuming UTC. */ 208# if @GNULIB_TIMEGM@ 209# if @REPLACE_TIMEGM@ 210# if !(defined __cplusplus && defined GNULIB_NAMESPACE) 211# undef timegm 212# define timegm rpl_timegm 213# endif 214_GL_FUNCDECL_RPL (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1))); 215_GL_CXXALIAS_RPL (timegm, time_t, (struct tm *__tm)); 216# else 217# if ! @HAVE_TIMEGM@ 218_GL_FUNCDECL_SYS (timegm, time_t, (struct tm *__tm) _GL_ARG_NONNULL ((1))); 219# endif 220_GL_CXXALIAS_SYS (timegm, time_t, (struct tm *__tm)); 221# endif 222_GL_CXXALIASWARN (timegm); 223# endif 224 225/* Encourage applications to avoid unsafe functions that can overrun 226 buffers when given outlandish struct tm values. Portable 227 applications should use strftime (or even sprintf) instead. */ 228# if defined GNULIB_POSIXCHECK 229# undef asctime 230_GL_WARN_ON_USE (asctime, "asctime can overrun buffers in some cases - " 231 "better use strftime (or even sprintf) instead"); 232# endif 233# if defined GNULIB_POSIXCHECK 234# undef asctime_r 235_GL_WARN_ON_USE (asctime, "asctime_r can overrun buffers in some cases - " 236 "better use strftime (or even sprintf) instead"); 237# endif 238# if defined GNULIB_POSIXCHECK 239# undef ctime 240_GL_WARN_ON_USE (asctime, "ctime can overrun buffers in some cases - " 241 "better use strftime (or even sprintf) instead"); 242# endif 243# if defined GNULIB_POSIXCHECK 244# undef ctime_r 245_GL_WARN_ON_USE (asctime, "ctime_r can overrun buffers in some cases - " 246 "better use strftime (or even sprintf) instead"); 247# endif 248 249#endif 250