/* * Copyright (c) 2007, 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. * * Author: Oliver Schmidt <ol.sc@web.de> * */ #include <time.h> #include "contiki.h" /*---------------------------------------------------------------------------*/ clock_time_t clock_time(void) { /* Contiki contains quite some calculations based on clock_time_t so we want * to avoid defining clock_time_t to be 32 bit because that would mean a lot * of overhead for cc65 targets. * On the other hand we want to avoid wrapping around frequently so the idea * is to reduce the clock resolution to the bare minimum. This is defined by * the DNS resolver using a 1/4 second timer. So CLOCK_CONF_SECOND needs to * be defined at least as 4. */ return clock() / (CLK_TCK / CLOCK_CONF_SECOND); } /*---------------------------------------------------------------------------*/ unsigned long clock_seconds(void) { return clock() / CLK_TCK; } /*---------------------------------------------------------------------------*/