1 /* 2 Copyright (c) 1991, 1993 3 The Regents of the University of California. All rights reserved. 4 c) UNIX System Laboratories, Inc. 5 All or some portions of this file are derived from material licensed 6 to the University of California by American Telephone and Telegraph 7 Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 the permission of UNIX System Laboratories, Inc. 9 10 Redistribution and use in source and binary forms, with or without 11 modification, are permitted provided that the following conditions 12 are met: 13 1. Redistributions of source code must retain the above copyright 14 notice, this list of conditions and the following disclaimer. 15 2. Redistributions in binary form must reproduce the above copyright 16 notice, this list of conditions and the following disclaimer in the 17 documentation and/or other materials provided with the distribution. 18 3. Neither the name of the University nor the names of its contributors 19 may be used to endorse or promote products derived from this software 20 without specific prior written permission. 21 22 THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 SUCH DAMAGE. 33 */ 34 /* 35 * time.h 36 * 37 * Struct and function declarations for dealing with time. 38 */ 39 40 #ifndef _TIME_H_ 41 #define _TIME_H_ 42 43 #include <sys/cdefs.h> 44 45 #define __need_size_t 46 #define __need_NULL 47 #include <stddef.h> 48 #include <sys/_types.h> 49 #include <sys/_timespec.h> 50 51 _BEGIN_STD_C 52 53 #ifndef _CLOCKS_PER_SEC_ 54 #define _CLOCKS_PER_SEC_ 1000000 55 #endif 56 57 #ifndef CLOCKS_PER_SEC 58 #define CLOCKS_PER_SEC _CLOCKS_PER_SEC_ 59 #endif 60 61 #ifndef TIME_UTC 62 #define TIME_UTC 1 63 #endif 64 65 #ifndef _CLOCK_T_DECLARED 66 typedef _CLOCK_T_ clock_t; 67 #define _CLOCK_T_DECLARED 68 #endif 69 70 struct tm 71 { 72 int tm_sec; 73 int tm_min; 74 int tm_hour; 75 int tm_mday; 76 int tm_mon; 77 int tm_year; 78 int tm_wday; 79 int tm_yday; 80 int tm_isdst; 81 #ifdef __TM_GMTOFF 82 long __TM_GMTOFF; 83 #endif 84 #ifdef __TM_ZONE 85 const char *__TM_ZONE; 86 #endif 87 }; 88 89 #if __POSIX_VISIBLE 90 91 #ifndef CLK_TCK 92 #define CLK_TCK CLOCKS_PER_SEC 93 #endif 94 95 #define CLOCK_REALTIME ((clockid_t) 1) 96 97 /* Flag indicating time is "absolute" with respect to the clock 98 associated with a time. Value 4 is historic. */ 99 100 #define TIMER_ABSTIME 4 101 102 #include <sys/_locale.h> 103 104 #ifndef _CLOCKID_T_DECLARED 105 typedef __clockid_t clockid_t; 106 #define _CLOCKID_T_DECLARED 107 #endif 108 109 #ifndef _TIMER_T_DECLARED 110 typedef __timer_t timer_t; 111 #define _TIMER_T_DECLARED 112 #endif 113 114 /* 115 * Structure defined by POSIX.1b to be like a itimerval, but with 116 * timespecs. Used in the timer_*() system calls. 117 */ 118 struct itimerspec { 119 struct timespec it_interval; 120 struct timespec it_value; 121 }; 122 123 #endif 124 125 #if __GNU_VISIBLE 126 #define CLOCK_REALTIME_COARSE ((clockid_t) 0) 127 #endif 128 129 #if defined(_POSIX_CPUTIME) 130 131 /* When used in a clock or timer function call, this is interpreted as 132 the identifier of the CPU_time clock associated with the PROCESS 133 making the function call. */ 134 135 #define CLOCK_PROCESS_CPUTIME_ID ((clockid_t) 2) 136 137 #endif 138 139 #if defined(_POSIX_THREAD_CPUTIME) 140 141 /* When used in a clock or timer function call, this is interpreted as 142 the identifier of the CPU_time clock associated with the THREAD 143 making the function call. */ 144 145 #define CLOCK_THREAD_CPUTIME_ID ((clockid_t) 3) 146 147 #endif 148 149 #if defined(_POSIX_MONOTONIC_CLOCK) 150 151 /* The identifier for the system-wide monotonic clock, which is defined 152 * as a clock whose value cannot be set via clock_settime() and which 153 * cannot have backward clock jumps. */ 154 155 #define CLOCK_MONOTONIC ((clockid_t) 4) 156 157 #endif 158 159 #if __GNU_VISIBLE 160 161 #define CLOCK_MONOTONIC_RAW ((clockid_t) 5) 162 163 #define CLOCK_MONOTONIC_COARSE ((clockid_t) 6) 164 165 #define CLOCK_BOOTTIME ((clockid_t) 7) 166 167 #define CLOCK_REALTIME_ALARM ((clockid_t) 8) 168 169 #define CLOCK_BOOTTIME_ALARM ((clockid_t) 9) 170 171 #endif 172 173 /* defines for the opengroup specifications Derived from Issue 1 of the SVID. */ 174 #if __SVID_VISIBLE || __XSI_VISIBLE 175 extern long _timezone; 176 extern int _daylight; 177 #endif 178 179 #if __POSIX_VISIBLE 180 extern char *tzname[2]; 181 #endif /* __POSIX_VISIBLE */ 182 183 char *asctime (const struct tm *_tblock); 184 185 #if __POSIX_VISIBLE 186 #define __ASCTIME_SIZE 26 187 188 char *asctime_r (const struct tm *__restrict, 189 char [__restrict_arr __min_size(__ASCTIME_SIZE)]); 190 #endif 191 192 clock_t clock (void); 193 194 #if defined(_POSIX_CPUTIME) 195 int clock_getcpuclockid (pid_t pid, clockid_t *clock_id); 196 #endif /* _POSIX_CPUTIME */ 197 198 #if __POSIX_VISIBLE 199 int clock_getres (clockid_t clock_id, struct timespec *res); 200 201 int clock_gettime (clockid_t clock_id, struct timespec *tp); 202 203 int clock_nanosleep (clockid_t clock_id, int flags, 204 const struct timespec *rqtp, 205 struct timespec *rmtp); 206 207 int clock_settime (clockid_t clock_id, const struct timespec *tp); 208 #endif 209 210 char *ctime (const time_t *_time); 211 212 #if __POSIX_VISIBLE 213 char *ctime_r (const time_t *, 214 char [__restrict_arr __min_size(__ASCTIME_SIZE)]); 215 #endif 216 217 double difftime (time_t _time2, time_t _time1); 218 219 #if __XSI_VISIBLE >= 4 220 struct tm *getdate (const char *); 221 #endif /* __XSI_VISIBLE >= 4 */ 222 223 #if __GNU_VISIBLE 224 extern int getdate_err; 225 226 int getdate_r (const char *, struct tm *); 227 #endif /* __GNU_VISIBLE */ 228 229 struct tm *gmtime (const time_t *_timer); 230 231 #if __POSIX_VISIBLE || __ZEPHYR_VISIBLE 232 struct tm *gmtime_r (const time_t *__restrict, 233 struct tm *__restrict); 234 #endif 235 236 struct tm *localtime (const time_t *_timer); 237 238 #if __POSIX_VISIBLE 239 struct tm *localtime_r (const time_t *__restrict, 240 struct tm *__restrict); 241 #endif 242 243 time_t mktime (struct tm *_timeptr); 244 245 int nanosleep (const struct timespec *rqtp, struct timespec *rmtp); 246 247 size_t strftime (char *__restrict _s, 248 size_t _maxsize, const char *__restrict _fmt, 249 const struct tm *__restrict _t); 250 251 int timespec_get(struct timespec *_ts, int _base); 252 253 #if __POSIX_VISIBLE 254 size_t strftime_l (char *__restrict _s, size_t _maxsize, 255 const char *__restrict _fmt, 256 const struct tm *__restrict _t, locale_t _l); 257 #endif 258 259 #if __XSI_VISIBLE 260 char *strptime (const char *__restrict, 261 const char *__restrict, 262 struct tm *__restrict); 263 #endif 264 #if __GNU_VISIBLE 265 char *strptime_l (const char *__restrict, const char *__restrict, 266 struct tm *__restrict, locale_t); 267 #endif 268 269 time_t time (time_t *_timer); 270 271 #if __BSD_VISIBLE || __SVID_VISIBLE || __GNU_VISIBLE 272 time_t timegm (struct tm *_timeptr); 273 #endif 274 275 #if __POSIX_VISIBLE 276 struct sigevent; 277 int timer_create (clockid_t clock_id, 278 struct sigevent *__restrict evp, 279 timer_t *__restrict timerid); 280 281 int timer_delete (timer_t timerid); 282 283 int timer_getoverrun (timer_t timerid); 284 285 int timer_gettime (timer_t timerid, struct itimerspec *value); 286 287 int timer_settime (timer_t timerid, int flags, 288 const struct itimerspec *__restrict value, 289 struct itimerspec *__restrict ovalue); 290 #endif 291 292 void tzset (void); 293 294 #if __STDC_WANT_LIB_EXT1__ == 1 295 #include <sys/_types.h> 296 297 #ifndef _ERRNO_T_DEFINED 298 typedef __errno_t errno_t; 299 #define _ERRNO_T_DEFINED 300 #endif 301 302 #ifndef _RSIZE_T_DEFINED 303 typedef __rsize_t rsize_t; 304 #define _RSIZE_T_DEFINED 305 #endif 306 #endif 307 308 _END_STD_C 309 310 #endif /* _TIME_H_ */ 311
