posix/include/time.h

   1 /* $Id: time.h,v 1.2 2002/02/20 09:17:55 hyperion Exp $
   2  */
   3 /*
   4  * time.h
   5  *
   6  * time types. Conforming to the Single UNIX(r) Specification Version 2,
   7  * System Interface & Headers Issue 5
   8  *
   9  * This file is part of the ReactOS Operating System.
  10  *
  11  * Contributors:
  12  *  Created by KJK::Hyperion <noog@libero.it>
  13  *
  14  *  THIS SOFTWARE IS NOT COPYRIGHTED
  15  *
  16  *  This source code is offered for use in the public domain. You may
  17  *  use, modify or distribute it freely.
  18  *
  19  *  This code is distributed in the hope that it will be useful but
  20  *  WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
  21  *  DISCLAMED. This includes but is not limited to warranties of
  22  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  23  *
  24  */
  25 #ifndef __TIME_H_INCLUDED__
  26 #define __TIME_H_INCLUDED__
  27
  28 /* INCLUDES */
  29 #include <signal.h>
  30 #include <sys/types.h>
  31
  32 /* OBJECTS */
  33 //extern static int getdate_err; /* FIXME */
  34 extern int       daylight;
  35 extern long int  timezone;
  36 extern char     *tzname[];
  37
  38 /* TYPES */
  39 /* pre-declaration of signal.h types to suppress warnings caused by circular
  40    dependencies */
  41 struct sigevent;
  42
  43 struct tm
  44 {
  45  int    tm_sec;   /* seconds [0,61] */
  46  int    tm_min;   /* minutes [0,59] */
  47  int    tm_hour;  /* hour [0,23] */
  48  int    tm_mday;  /* day of month [1,31] */
  49  int    tm_mon;   /* month of year [0,11] */
  50  int    tm_year;  /* years since 1900 */
  51  int    tm_wday;  /* day of week [0,6] (Sunday = 0) */
  52  int    tm_yday;  /* day of year [0,365] */
  53  int    tm_isdst; /* daylight savings flag */
  54 };
  55
  56 struct timespec
  57 {
  58  time_t  tv_sec;    /* seconds */
  59  long    tv_nsec;   /* nanoseconds */
  60 };
  61
  62 struct itimerspec
  63 {
  64  struct timespec  it_interval;  /* timer period */
  65  struct timespec  it_value;     /* timer expiration */
  66 };
  67
  68 /* CONSTANTS */
  69 /* FIXME: all the constants are wrong */
  70 /* Number of clock ticks per second returned by the times() function (LEGACY). */
  71 #define CLK_TCK (1)
  72 /* A number used to convert the value returned by the clock() function into
  73    seconds. */
  74 #define CLOCKS_PER_SEC (1)
  75 /* The identifier of the systemwide realtime clock. */
  76 #define CLOCK_REALTIME (0)
  77 /* Flag indicating time is absolute with respect to the clock associated with a
  78    timer. */
  79 #define TIMER_ABSTIME (1)
  80
  81 /* PROTOTYPES */
  82 char      *asctime(const struct tm *);
  83 char      *asctime_r(const struct tm *, char *);
  84 clock_t    clock(void);
  85 int        clock_getres(clockid_t, struct timespec *);
  86 int        clock_gettime(clockid_t, struct timespec *);
  87 int        clock_settime(clockid_t, const struct timespec *);
  88 char      *ctime(const time_t *);
  89 char      *ctime_r(const time_t *, char *);
  90 double     difftime(time_t, time_t);
  91 struct tm *getdate(const char *);
  92 struct tm *gmtime(const time_t *);
  93 struct tm *gmtime_r(const time_t *, struct tm *);
  94 struct tm *localtime(const time_t *);
  95 struct tm *localtime_r(const time_t *, struct tm *);
  96 time_t     mktime(struct tm *);
  97 int        nanosleep(const struct timespec *, struct timespec *);
  98 size_t     strftime(char *, size_t, const char *, const struct tm *);
  99 char      *strptime(const char *, const char *, struct tm *);
 100 time_t     time(time_t *);
 101 int        timer_create(clockid_t, struct sigevent *, timer_t *);
 102 int        timer_delete(timer_t);
 103 int        timer_gettime(timer_t, struct itimerspec *);
 104 int        timer_getoverrun(timer_t);
 105 int        timer_settime(timer_t, int, const struct itimerspec *,
 106                struct itimerspec *);
 107 void       tzset(void);
 108
 109 /* MACROS */
 110
 111 #endif /* __TIME_H_INCLUDED__ */ /* replace with the appropriate tag */
 112
 113 /* EOF */
 114