src/external/heimdal/roken/gettimeofday.c

   1 /*
   2  * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include <config.h>
  35 #include "roken.h"
  36 #ifndef HAVE_GETTIMEOFDAY
  37
  38 #ifdef _WIN32
  39
  40 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
  41 gettimeofday (struct timeval *tp, void *ignore)
  42 {
  43     FILETIME ft;
  44     ULARGE_INTEGER li;
  45     ULONGLONG ull;
  46
  47     GetSystemTimeAsFileTime(&ft);
  48     li.LowPart = ft.dwLowDateTime;
  49     li.HighPart = ft.dwHighDateTime;
  50     ull = li.QuadPart;
  51
  52     ull -= 116444736000000000i64;
  53     ull /= 10i64;               /* ull is now in microseconds */
  54
  55     tp->tv_usec = (ull % 1000000i64);
  56     tp->tv_sec  = (ull / 1000000i64);
  57
  58     return 0;
  59 }
  60
  61 #else
  62
  63 /*
  64  * Simple gettimeofday that only returns seconds.
  65  */
  66 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
  67 gettimeofday (struct timeval *tp, void *ignore)
  68 {
  69      time_t t;
  70
  71      t = time(NULL);
  72      tp->tv_sec  = (long) t;
  73      tp->tv_usec = 0;
  74      return 0;
  75 }
  76
  77 #endif  /* !_WIN32 */
  78 #endif