libc-top-half/musl/include/time.h

   1 #ifndef _TIME_H
   2 #define _TIME_H
   3
   4 #ifdef __cplusplus
   5 extern "C" {
   6 #endif
   7
   8 #include <features.h>
   9
  10 #ifdef __wasilibc_unmodified_upstream /* Use the compiler's definition of NULL */
  11 #if __cplusplus >= 201103L
  12 #define NULL nullptr
  13 #elif defined(__cplusplus)
  14 #define NULL 0L
  15 #else
  16 #define NULL ((void*)0)
  17 #endif
  18 #else
  19 #define __need_NULL
  20 #include <stddef.h>
  21 #endif
  22
  23
  24 #define __NEED_size_t
  25 #define __NEED_time_t
  26 #define __NEED_clock_t
  27 #define __NEED_struct_timespec
  28
  29 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
  30  || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
  31  || defined(_BSD_SOURCE)
  32 #define __NEED_clockid_t
  33 #define __NEED_timer_t
  34 #define __NEED_pid_t
  35 #define __NEED_locale_t
  36 #endif
  37
  38 #include <bits/alltypes.h>
  39
  40 #if defined(_BSD_SOURCE) || defined(_GNU_SOURCE)
  41 #define __tm_gmtoff tm_gmtoff
  42 #define __tm_zone tm_zone
  43 #endif
  44
  45 #ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
  46 struct tm {
  47         int tm_sec;
  48         int tm_min;
  49         int tm_hour;
  50         int tm_mday;
  51         int tm_mon;
  52         int tm_year;
  53         int tm_wday;
  54         int tm_yday;
  55         int tm_isdst;
  56         long __tm_gmtoff;
  57         const char *__tm_zone;
  58 };
  59 #else
  60 #include <__header_time.h>
  61 #endif
  62
  63 #if defined(__wasilibc_unmodified_upstream) || defined(_WASI_EMULATED_PROCESS_CLOCKS)
  64 clock_t clock (void);
  65 #else
  66 __attribute__((__deprecated__(
  67 "WASI lacks process-associated clocks; to enable emulation of the `clock` function using "
  68 "the wall clock, which isn't sensitive to whether the program is running or suspended, "
  69 "compile with -D_WASI_EMULATED_PROCESS_CLOCKS and link with -lwasi-emulated-process-clocks"
  70 )))
  71 clock_t clock (void);
  72 #endif
  73 time_t time (time_t *);
  74 double difftime (time_t, time_t);
  75 time_t mktime (struct tm *);
  76 size_t strftime (char *__restrict, size_t, const char *__restrict, const struct tm *__restrict);
  77 struct tm *gmtime (const time_t *);
  78 struct tm *localtime (const time_t *);
  79 char *asctime (const struct tm *);
  80 char *ctime (const time_t *);
  81 int timespec_get(struct timespec *, int);
  82
  83 #ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
  84 #define CLOCKS_PER_SEC 1000000L
  85
  86 #define TIME_UTC 1
  87 #endif
  88
  89 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
  90  || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
  91  || defined(_BSD_SOURCE)
  92
  93 size_t strftime_l (char *  __restrict, size_t, const char *  __restrict, const struct tm *  __restrict, locale_t);
  94
  95 struct tm *gmtime_r (const time_t *__restrict, struct tm *__restrict);
  96 struct tm *localtime_r (const time_t *__restrict, struct tm *__restrict);
  97 char *asctime_r (const struct tm *__restrict, char *__restrict);
  98 char *ctime_r (const time_t *, char *);
  99
 100 #ifdef __wasilibc_unmodified_upstream /* WASI has no timezone tables */
 101 void tzset (void);
 102 #endif
 103
 104 struct itimerspec {
 105         struct timespec it_interval;
 106         struct timespec it_value;
 107 };
 108
 109 #ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
 110 #define CLOCK_REALTIME           0
 111 #define CLOCK_MONOTONIC          1
 112 #define CLOCK_PROCESS_CPUTIME_ID 2
 113 #define CLOCK_THREAD_CPUTIME_ID  3
 114 #define CLOCK_MONOTONIC_RAW      4
 115 #define CLOCK_REALTIME_COARSE    5
 116 #define CLOCK_MONOTONIC_COARSE   6
 117 #define CLOCK_BOOTTIME           7
 118 #define CLOCK_REALTIME_ALARM     8
 119 #define CLOCK_BOOTTIME_ALARM     9
 120 #define CLOCK_SGI_CYCLE         10
 121 #define CLOCK_TAI               11
 122
 123 #define TIMER_ABSTIME 1
 124 #endif
 125
 126 int nanosleep (const struct timespec *, struct timespec *);
 127 int clock_getres (clockid_t, struct timespec *);
 128 int clock_gettime (clockid_t, struct timespec *);
 129 #ifdef __wasilibc_unmodified_upstream /* WASI has no clock_settime */
 130 int clock_settime (clockid_t, const struct timespec *);
 131 #endif
 132 int clock_nanosleep (clockid_t, int, const struct timespec *, struct timespec *);
 133 #ifdef __wasilibc_unmodified_upstream /* WASI has no clock_getcpuclockid */
 134 int clock_getcpuclockid (pid_t, clockid_t *);
 135 #endif
 136
 137 #ifdef __wasilibc_unmodified_upstream /* WASI has no timers */
 138 struct sigevent;
 139 int timer_create (clockid_t, struct sigevent *__restrict, timer_t *__restrict);
 140 int timer_delete (timer_t);
 141 int timer_settime (timer_t, int, const struct itimerspec *__restrict, struct itimerspec *__restrict);
 142 int timer_gettime (timer_t, struct itimerspec *);
 143 int timer_getoverrun (timer_t);
 144 #endif
 145
 146 #ifdef __wasilibc_unmodified_upstream /* WASI has no timezone tables */
 147 extern char *tzname[2];
 148 #endif
 149
 150 #endif
 151
 152
 153 #if defined(_XOPEN_SOURCE) || defined(_BSD_SOURCE) || defined(_GNU_SOURCE)
 154 char *strptime (const char *__restrict, const char *__restrict, struct tm *__restrict);
 155 #ifdef __wasilibc_unmodified_upstream /* WASI has no timezone tables */
 156 extern int daylight;
 157 extern long timezone;
 158 #endif
 159 extern int getdate_err;
 160 struct tm *getdate (const char *);
 161 #endif
 162
 163
 164 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 165 #ifdef __wasilibc_unmodified_upstream /* WASI has no stime */
 166 int stime(const time_t *);
 167 #endif
 168 time_t timegm(struct tm *);
 169 #endif
 170
 171 #if _REDIR_TIME64
 172 __REDIR(time, __time64);
 173 __REDIR(difftime, __difftime64);
 174 __REDIR(mktime, __mktime64);
 175 __REDIR(gmtime, __gmtime64);
 176 __REDIR(localtime, __localtime64);
 177 __REDIR(ctime, __ctime64);
 178 __REDIR(timespec_get, __timespec_get_time64);
 179 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
 180  || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
 181  || defined(_BSD_SOURCE)
 182 __REDIR(gmtime_r, __gmtime64_r);
 183 __REDIR(localtime_r, __localtime64_r);
 184 __REDIR(ctime_r, __ctime64_r);
 185 __REDIR(nanosleep, __nanosleep_time64);
 186 __REDIR(clock_getres, __clock_getres_time64);
 187 __REDIR(clock_gettime, __clock_gettime64);
 188 __REDIR(clock_settime, __clock_settime64);
 189 __REDIR(clock_nanosleep, __clock_nanosleep_time64);
 190 __REDIR(timer_settime, __timer_settime64);
 191 __REDIR(timer_gettime, __timer_gettime64);
 192 #endif
 193 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 194 __REDIR(stime, __stime64);
 195 __REDIR(timegm, __timegm_time64);
 196 #endif
 197 #endif
 198
 199 #ifdef __cplusplus
 200 }
 201 #endif
 202
 203
 204 #endif