crypto/external/bsd/heimdal/dist/lib/roken/gettimeofday.c

   1 /*      $NetBSD: gettimeofday.c,v 1.1.1.1 2011/04/13 18:15:41 elric Exp $       */
   2
   3 /*
   4  * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <config.h>
  37 #include <krb5/roken.h>
  38 #ifndef HAVE_GETTIMEOFDAY
  39
  40 #ifdef _WIN32
  41
  42 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
  43 gettimeofday (struct timeval *tp, void *ignore)
  44 {
  45     FILETIME ft;
  46     ULARGE_INTEGER li;
  47     ULONGLONG ull;
  48
  49     GetSystemTimeAsFileTime(&ft);
  50     li.LowPart = ft.dwLowDateTime;
  51     li.HighPart = ft.dwHighDateTime;
  52     ull = li.QuadPart;
  53
  54     ull -= 116444736000000000i64;
  55     ull /= 10i64;               /* ull is now in microseconds */
  56
  57     tp->tv_usec = (ull % 1000000i64);
  58     tp->tv_sec  = (ull / 1000000i64);
  59
  60     return 0;
  61 }
  62
  63 #else
  64
  65 /*
  66  * Simple gettimeofday that only returns seconds.
  67  */
  68 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
  69 gettimeofday (struct timeval *tp, void *ignore)
  70 {
  71      time_t t;
  72
  73      t = time(NULL);
  74      tp->tv_sec  = (long) t;
  75      tp->tv_usec = 0;
  76      return 0;
  77 }
  78
  79 #endif  /* !_WIN32 */
  80 #endif