nes-proj/platform/minimal-net/clock.c

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/*
* Copyright (c) 2005, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
* $Id: clock.c,v 1.2 2008/07/10 17:10:39 adamdunkels Exp $
*/
/**
* \file
* Clock implementation for Unix.
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "sys/clock.h"
2011-08-31 19:56:28 +00:00
#include <stdlib.h>
#include <sys/time.h>
static long startsecs=0,startmsecs=0;
/*---------------------------------------------------------------------------*/
void
clock_init(void)
{
struct timeval tv;
gettimeofday(&tv, NULL) ;
startmsecs=tv.tv_usec/1000;
startsecs=tv.tv_sec;
}
/*---------------------------------------------------------------------------*/
clock_time_t
clock_time(void)
{
struct timeval tv;
struct timezone tz;
gettimeofday(&tv, &tz);
return tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
/*---------------------------------------------------------------------------*/
unsigned long
clock_seconds(void)
{
/* Returne seconds since startup */
long secs,msecs;
struct timeval tv;
gettimeofday(&tv, NULL) ;
msecs=tv.tv_usec/1000;
secs=tv.tv_sec;
secs -=startsecs;
msecs-=startmsecs;
if (msecs<0) secs--;
return secs;
}
#if 0
/* Return seconds since midnight*/
struct timeval tv;
struct timezone tz;
gettimeofday(&tv, &tz);
return tv.tv_sec;
}
#endif
/*---------------------------------------------------------------------------*/
void
clock_delay(unsigned int d)
{
/* Does not do anything. */
}
/*---------------------------------------------------------------------------*/