libc/include/sys/time.h

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU 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 General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef _SYS_TIME_H
  20 #define _SYS_TIME_H
  21
  22 struct timeval {
  23         long tv_sec;            /* seconds */
  24         long tv_usec;           /* microseconds */
  25 };
  26
  27 struct timezone {
  28         int tz_minuteswest;     /* minutes west of Greenwich */
  29         int tz_dsttime;         /* type of DST correction */
  30 };
  31
  32 enum {
  33         DST_NONE,       /* not on dst */
  34         DST_USA,        /* USA style dst */
  35         DST_AUST,       /* Australian style dst */
  36         DST_WET,        /* Western European dst */
  37         DST_MET,        /* Middle European dst */
  38         DST_EET,        /* Eastern European dst */
  39         DST_CAN,        /* Canada */
  40         DST_GB,         /* Great Britain and Eire */
  41         DST_RUM,        /* Rumania */
  42         DST_TUR,        /* Turkey */
  43         DST_AUSTALT     /* Australian style with shift in 1986 */
  44 };
  45
  46 #define timerisset(tvp)\
  47         ((tvp)->tv_sec || (tvp)->tv_usec)
  48 #define timercmp(tvp, uvp, cmp)\
  49         ((tvp)->tv_sec cmp (uvp)->tv_sec ||\
  50         (tvp)->tv_sec == (uvp)->tv_sec &&\
  51         (tvp)->tv_usec cmp (uvp)->tv_usec)
  52 #define timerclear(tvp)\
  53         ((tvp)->tv_sec = (tvp)->tv_usec = 0)
  54
  55 extern int gettimeofday (struct timeval *tv, struct timezone *tz);
  56
  57 #endif