Contiki 2.6
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00001 /* 00002 * Copyright (c) 2005, Swedish Institute of Computer Science. 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. Neither the name of the Institute nor the names of its contributors 00014 * may be used to endorse or promote products derived from this software 00015 * without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 00018 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 00021 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00022 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00023 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00024 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00025 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00026 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00027 * SUCH DAMAGE. 00028 * 00029 * This file is part of the Contiki operating system. 00030 * 00031 * $Id: clock.c,v 1.2 2008/07/10 17:10:39 adamdunkels Exp $ 00032 */ 00033 00034 /** 00035 * \file 00036 * Clock implementation for Unix. 00037 * \author 00038 * Adam Dunkels <adam@sics.se> 00039 */ 00040 00041 #include "sys/clock.h" 00042 #include <stdlib.h> 00043 #include <sys/time.h> 00044 00045 static long startsecs=0,startmsecs=0; 00046 /*---------------------------------------------------------------------------*/ 00047 void 00048 clock_init(void) 00049 { 00050 struct timeval tv; 00051 gettimeofday(&tv, NULL) ; 00052 startmsecs=tv.tv_usec/1000; 00053 startsecs=tv.tv_sec; 00054 } 00055 /*---------------------------------------------------------------------------*/ 00056 clock_time_t 00057 clock_time(void) 00058 { 00059 struct timeval tv; 00060 struct timezone tz; 00061 00062 gettimeofday(&tv, &tz); 00063 00064 return tv.tv_sec * 1000 + tv.tv_usec / 1000; 00065 } 00066 /*---------------------------------------------------------------------------*/ 00067 unsigned long 00068 clock_seconds(void) 00069 { 00070 /* Returne seconds since startup */ 00071 long secs,msecs; 00072 struct timeval tv; 00073 gettimeofday(&tv, NULL) ; 00074 msecs=tv.tv_usec/1000; 00075 secs=tv.tv_sec; 00076 secs -=startsecs; 00077 msecs-=startmsecs; 00078 if (msecs<0) secs--; 00079 return secs; 00080 } 00081 #if 0 00082 /* Return seconds since midnight*/ 00083 struct timeval tv; 00084 struct timezone tz; 00085 00086 gettimeofday(&tv, &tz); 00087 00088 return tv.tv_sec; 00089 } 00090 #endif 00091 /*---------------------------------------------------------------------------*/ 00092 void 00093 clock_delay(unsigned int d) 00094 { 00095 /* Does not do anything. */ 00096 } 00097 /*---------------------------------------------------------------------------*/