nes-proj/arch/platform/native/clock.c

103 lines
3.2 KiB
C

/*
* 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.
*
*/
/**
* \file
* Clock implementation for Unix.
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "sys/clock.h"
#include <time.h>
#include <sys/time.h>
/*---------------------------------------------------------------------------*/
typedef struct clock_timespec_s {
time_t tv_sec;
long tv_nsec;
} clock_timespec_t;
/*---------------------------------------------------------------------------*/
static void
get_time(clock_timespec_t *spec)
{
#if defined(__linux__) || (defined(__MACH__) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 101200)
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
spec->tv_sec = ts.tv_sec;
spec->tv_nsec = ts.tv_nsec;
#else
struct timeval tv;
gettimeofday(&tv, NULL);
spec->tv_sec = tv.tv_sec;
spec->tv_nsec = tv.tv_usec * 1000;
#endif
}
/*---------------------------------------------------------------------------*/
clock_time_t
clock_time(void)
{
clock_timespec_t ts;
get_time(&ts);
return ts.tv_sec * CLOCK_SECOND + ts.tv_nsec / (1000000000 / CLOCK_SECOND);
}
/*---------------------------------------------------------------------------*/
unsigned long
clock_seconds(void)
{
clock_timespec_t ts;
get_time(&ts);
return ts.tv_sec;
}
/*---------------------------------------------------------------------------*/
void
clock_delay(unsigned int d)
{
/* Does not do anything. */
}
/*---------------------------------------------------------------------------*/
void
clock_init(void)
{
/* Provide this function, required by main() */
return;
}
/*---------------------------------------------------------------------------*/