/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved * * File: libc/sys/gettimeofday.c */ #include <time.h> #include <tzfile.h> #include <sys/time.h> #include <errno.h> #include <sys/syscall.h> #include <unistd.h> int gettimeofday (struct timeval *tp, struct timezone *tzp) { static int validtz = 0; static struct timezone cached_tz = {0}; struct timeval localtv; #ifdef __ppc__ extern __ppc_gettimeofday(struct timeval *, struct timezone *); #endif if (tzp && (tp == NULL) && (validtz == 0)) { tp = &localtv; } #ifdef __ppc__ if(__ppc_gettimeofday(tp, tzp)) return(-1); #else if (syscall (SYS_gettimeofday, tp, tzp) < 0) { return (-1); } #endif if (tzp) { if (validtz == 0) { struct tm *localtm = localtime ((time_t *)&tp->tv_sec); cached_tz.tz_dsttime = localtm->tm_isdst; cached_tz.tz_minuteswest = (-localtm->tm_gmtoff / SECSPERMIN) + (localtm->tm_isdst * MINSPERHOUR); validtz = 1; } tzp->tz_dsttime = cached_tz.tz_dsttime; tzp->tz_minuteswest = cached_tz.tz_minuteswest; } return (0); }