129 lines
3.8 KiB
C
129 lines
3.8 KiB
C
/*
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* Copyright (c) 2008, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* $Id: timetable.c,v 1.3 2009/09/09 21:10:35 adamdunkels Exp $
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*/
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/**
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* \file
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* Implementation of timetable, a data structure containing timestamps for events
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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#include "sys/clock.h"
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#include "sys/timetable.h"
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#include <stdio.h>
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rtimer_clock_t timetable_timestamp_time;
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/*---------------------------------------------------------------------------*/
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struct timetable_timestamp *
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timetable_entry(struct timetable *t, int num)
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{
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if(t == NULL) {
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return NULL;
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}
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return &(t->timestamps[num]);
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}
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/*---------------------------------------------------------------------------*/
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int
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timetable_ptr(struct timetable *t)
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{
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return *t->ptr;
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}
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/*---------------------------------------------------------------------------*/
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void
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timetable_clear(struct timetable *t)
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{
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*t->ptr = 0;
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}
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/*---------------------------------------------------------------------------*/
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rtimer_clock_t
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timetable_timediff(struct timetable *t,
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const char *id1, const char *id2)
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{
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int i;
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int t1, t2;
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t1 = t2 = t->size;
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for(i = *t->ptr - 1; i >= 0; --i) {
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if(t->timestamps[i].id == id1) {
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t1 = i;
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break;
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}
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}
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for(i = i - 1; i >= 0; --i) {
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if(t->timestamps[i].id == id2) {
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t2 = i;
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break;
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}
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}
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if(t1 != t->size && t2 != t->size) {
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return t->timestamps[t1].time - t->timestamps[t2].time;
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}
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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void
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timetable_init(void)
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{
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char dummy1, dummy2;
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#define temp_size 4
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TIMETABLE_STATIC(temp);
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timetable_clear(&temp);
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/* Measure the time for taking a timestamp. */
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TIMETABLE_TIMESTAMP(temp, &dummy1);
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TIMETABLE_TIMESTAMP(temp, &dummy2);
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timetable_timestamp_time = timetable_timediff(&temp, &dummy1, &dummy2);
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}
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/*---------------------------------------------------------------------------*/
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void
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timetable_print(struct timetable *t)
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{
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int i;
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int time;
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time = t->timestamps[0].time;
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printf("---\n");
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for(i = 1; i < *t->ptr; ++i) {
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printf("%s: %u\n", t->timestamps[i - 1].id, t->timestamps[i].time - time);
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time = t->timestamps[i].time;
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}
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}
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/*---------------------------------------------------------------------------*/
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