include/time.h

   1 /*
   2  * time.h
   3  *
   4  * Struct and function declarations for dealing with time.
   5  */
   6
   7 #ifndef _TIME_H_
   8 #define _TIME_H_
   9
  10 #include "_ansi.h"
  11
  12 #ifdef __cplusplus
  13 extern "C" {
  14 #endif
  15
  16 #ifndef NULL
  17 #define NULL    0
  18 #endif
  19
  20 /* Get _CLOCKS_PER_SEC_ */
  21 #include <machine/time.h>
  22
  23 #ifndef _CLOCKS_PER_SEC_
  24 #define _CLOCKS_PER_SEC_ 1000
  25 #endif
  26
  27 #define CLOCKS_PER_SEC _CLOCKS_PER_SEC_
  28 #define CLK_TCK CLOCKS_PER_SEC
  29 #define __need_size_t
  30 #include <stddef.h>
  31
  32 #include <sys/types.h>
  33
  34 struct tm
  35 {
  36   int   tm_sec;
  37   int   tm_min;
  38   int   tm_hour;
  39   int   tm_mday;
  40   int   tm_mon;
  41   int   tm_year;
  42   int   tm_wday;
  43   int   tm_yday;
  44   int   tm_isdst;
  45 };
  46
  47 clock_t    _EXFUN(clock,    (void));
  48 double     _EXFUN(difftime, (time_t _time2, time_t _time1));
  49 time_t     _EXFUN(mktime,   (struct tm *_timeptr));
  50 time_t     _EXFUN(time,     (time_t *_timer));
  51 #ifndef _REENT_ONLY
  52 char      *_EXFUN(asctime,  (const struct tm *_tblock));
  53 char      *_EXFUN(ctime,    (const time_t *_time));
  54 struct tm *_EXFUN(gmtime,   (const time_t *_timer));
  55 struct tm *_EXFUN(localtime,(const time_t *_timer));
  56 #endif
  57 size_t     _EXFUN(strftime, (char *_s, size_t _maxsize, const char *_fmt, const struct tm *_t));
  58
  59 char      *_EXFUN(asctime_r,    (const struct tm *, char *));
  60 char      *_EXFUN(ctime_r,      (const time_t *, char *));
  61 struct tm *_EXFUN(gmtime_r,     (const time_t *, struct tm *));
  62 struct tm *_EXFUN(localtime_r,  (const time_t *, struct tm *));
  63
  64 #if defined(__CYGWIN__) || defined(__MSYS__)
  65 #ifndef __STRICT_ANSI__
  66 extern __IMPORT time_t _timezone;
  67 extern __IMPORT int _daylight;
  68 extern __IMPORT char *_tzname[2];
  69 /* defines for the opengroup specifications Derived from Issue 1 of the SVID.  */
  70 #ifndef tzname
  71 #define tzname _tzname
  72 #endif
  73 #ifndef daylight
  74 #define daylight _daylight
  75 #endif
  76 #if timezonevar
  77 #ifndef timezone
  78 #define timezone ((long int) _timezone)
  79 #endif
  80 #else
  81 char *_EXFUN(timezone, (void));
  82 #endif
  83 void _EXFUN(tzset, (void));
  84 #endif
  85 #endif /* __CYGWIN__ or __MSYS__ */
  86
  87 #include <sys/features.h>
  88
  89
  90 #if defined(_POSIX_TIMERS)
  91
  92 #include <signal.h>
  93
  94 /* Clocks, P1003.1b-1993, p. 263 */
  95
  96 int _EXFUN(clock_settime, (clockid_t clock_id, const struct timespec *tp));
  97 int _EXFUN(clock_gettime, (clockid_t clock_id, struct timespec *tp));
  98 int _EXFUN(clock_getres,  (clockid_t clock_id, struct timespec *res));
  99
 100 /* Create a Per-Process Timer, P1003.1b-1993, p. 264 */
 101
 102 int _EXFUN(timer_create,
 103   (clockid_t clock_id, struct sigevent *evp, timer_t *timerid));
 104
 105 /* Delete a Per_process Timer, P1003.1b-1993, p. 266 */
 106
 107 int _EXFUN(timer_delete, (timer_t timerid));
 108
 109 /* Per-Process Timers, P1003.1b-1993, p. 267 */
 110
 111 int _EXFUN(timer_settime,
 112   (timer_t timerid, int flags, const struct itimerspec *value,
 113    struct itimerspec *ovalue));
 114 int _EXFUN(timer_gettime, (timer_t timerid, struct itimerspec *value));
 115 int _EXFUN(timer_getoverrun, (timer_t timerid));
 116
 117 /* High Resolution Sleep, P1003.1b-1993, p. 269 */
 118
 119 int _EXFUN(nanosleep, (const struct timespec  *rqtp, struct timespec *rmtp));
 120
 121 #endif /* _POSIX_TIMERS */
 122
 123 /* CPU-time Clock Attributes, P1003.4b/D8, p. 54 */
 124
 125 /* values for the clock enable attribute */
 126
 127 #define CLOCK_ENABLED  1  /* clock is enabled, i.e. counting execution time */
 128 #define CLOCK_DISABLED 0  /* clock is disabled */
 129
 130 /* values for the pthread cputime_clock_allowed attribute */
 131
 132 #define CLOCK_ALLOWED    1 /* If a thread is created with this value a */
 133                            /*   CPU-time clock attached to that thread */
 134                            /*   shall be accessible. */
 135 #define CLOCK_DISALLOWED 0 /* If a thread is created with this value, the */
 136                            /*   thread shall not have a CPU-time clock */
 137                            /*   accessible. */
 138
 139 /* Manifest Constants, P1003.1b-1993, p. 262 */
 140
 141 #define CLOCK_REALTIME (clockid_t)1
 142
 143 /* Flag indicating time is "absolute" with respect to the clock
 144    associated with a time.  */
 145
 146 #define TIMER_ABSTIME  4
 147
 148 /* Manifest Constants, P1003.4b/D8, p. 55 */
 149
 150 #if defined(_POSIX_CPUTIME)
 151
 152 /* When used in a clock or timer function call, this is interpreted as
 153    the identifier of the CPU_time clock associated with the PROCESS
 154    making the function call.  */
 155
 156 #define CLOCK_PROCESS_CPUTIME (clockid_t)2
 157
 158 #endif
 159
 160 #if defined(_POSIX_THREAD_CPUTIME)
 161
 162 /*  When used in a clock or timer function call, this is interpreted as
 163     the identifier of the CPU_time clock associated with the THREAD
 164     making the function call.  */
 165
 166 #define CLOCK_THREAD_CPUTIME (clockid_t)3
 167
 168 #endif
 169
 170 #if defined(_POSIX_CPUTIME)
 171
 172 /* Accessing a Process CPU-time CLock, P1003.4b/D8, p. 55 */
 173
 174 int _EXFUN(clock_getcpuclockid, (pid_t pid, clockid_t *clock_id));
 175
 176 #endif /* _POSIX_CPUTIME */
 177
 178 #if defined(_POSIX_CPUTIME) || defined(_POSIX_THREAD_CPUTIME)
 179
 180 /* CPU-time Clock Attribute Access, P1003.4b/D8, p. 56 */
 181
 182 int _EXFUN(clock_setenable_attr, (clockid_t clock_id, int attr));
 183 int _EXFUN(clock_getenable_attr, (clockid_t clock_id, int *attr));
 184
 185 #endif /* _POSIX_CPUTIME or _POSIX_THREAD_CPUTIME */
 186
 187 #ifdef __cplusplus
 188 }
 189 #endif
 190 #endif /* _TIME_H_ */
 191