apps/include/time.h

   1 /*
   2     meinOS - A unix-like x86 microkernel operating system
   3     Copyright (C) 2008  Janosch Gräf <janosch.graef@gmx.net>
   4
   5     This program is free software: you can redistribute it and/or modify
   6     it under the terms of the GNU Lesser General Public License as published by
   7     the Free Software Foundation, either version 3 of the License, or
   8     (at your option) 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 Lesser General Public License for more details.
  14
  15     You should have received a copy of the GNU Lesser General Public License
  16     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #ifndef _TIME_H_
  20 #define _TIME_H_
  21
  22 #include <sys/types.h>
  23
  24 #define CLOCKS_PER_SEC  100 /// @see kernel2/cpu.h
  25 #define CLOCK_REALTIME  0   // ID of Realtime clock (?) ///< @see ?
  26 #define TIMER_ABSTIME   0   // Flag indicating time is absolute ///< @see ?
  27 #define CLOCK_MONOTONIC 1   // ID of monotonic clock (?) ///< @see ?
  28
  29 struct tm {
  30   int tm_sec;   // Seconds [0..59]
  31   int tm_min;   // Minute [0..59]
  32   int tm_hour;  // Hour [0..23]
  33   int tm_mday;  // Day of month [1..31]
  34   int tm_mon;   // Month of year [0..11]
  35   int tm_year;  // Years since 1900
  36   int tm_wday;  // Day of Week [0..6] (Sunday=0)
  37   int tm_yday;  // Day of Year [0..365]
  38   int tm_isdst; // Daylight Savings Flag
  39 };
  40 struct timespec {
  41   time_t tv_sec;
  42   long tv_nsec;
  43 };
  44 struct itimerspec {
  45   struct timespec it_interval; // Timer period.
  46   struct timespec it_value;    // Timer expiration.
  47 };
  48
  49 time_t time(time_t *tloc);
  50 time_t mktime(struct tm *tm);
  51 char *asctime(const struct tm *timeptr);
  52 clock_t clock();
  53
  54 #endif