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glibc  2.9
gettimeofday.c
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00001 /* Copyright (C) 1991,1992,1995-1997,2001,2002 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <errno.h>
00020 #include <stddef.h>
00021 #include <sys/time.h>
00022 #include <mach.h>
00023 
00024 #undef __gettimeofday
00025 
00026 /* Get the current time of day and timezone information,
00027    putting it into *TV and *TZ.  If TZ is NULL, *TZ is not filled.
00028    Returns 0 on success, -1 on errors.  */
00029 int
00030 __gettimeofday (tv, tz)
00031      struct timeval *tv;
00032      struct timezone *tz;
00033 {
00034   kern_return_t err;
00035 
00036   if (tz != NULL)
00037     *tz = (struct timezone){0, 0}; /* XXX */
00038 
00039   if (err = __host_get_time (__mach_host_self (), (time_value_t *) tv))
00040     {
00041       errno = err;
00042       return -1;
00043     }
00044   return 0;
00045 }
00046 
00047 INTDEF(__gettimeofday)
00048 weak_alias (__gettimeofday, gettimeofday)