120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/**
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* \addtogroup rt
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* @{
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*/
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/**
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* \file
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* Implementation of the architecture-agnostic parts of the real-time timer module.
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* \author
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* Adam Dunkels <adam@sics.se>
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*
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*/
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/*
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* Copyright (c) 2005, 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: rtimer.c,v 1.6 2009/12/08 23:55:17 adamdunkels Exp $
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*/
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#include "sys/rtimer.h"
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#include "contiki.h"
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#ifdef RTIMER_CONF_NUM
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#define LIST_SIZE RTIMER_CONF_NUM
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#else
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#define LIST_SIZE 8
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#endif
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static struct rtimer *rtimers[LIST_SIZE];
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static u8_t next, firstempty;
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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static struct rtimer *next_rtimer;
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/*---------------------------------------------------------------------------*/
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void
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rtimer_init(void)
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{
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next = 0;
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firstempty = 0;
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rtimer_arch_init();
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}
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/*---------------------------------------------------------------------------*/
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int
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rtimer_set(struct rtimer *rtimer, rtimer_clock_t time,
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rtimer_clock_t duration,
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rtimer_callback_t func, void *ptr)
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{
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int first = 0;
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PRINTF("rtimer_set time %d\n", time);
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if(next_rtimer == NULL) {
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first = 1;
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}
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rtimer->func = func;
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rtimer->ptr = ptr;
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rtimer->time = time;
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next_rtimer = rtimer;
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if(first == 1) {
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rtimer_arch_schedule(time);
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}
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return RTIMER_OK;
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}
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/*---------------------------------------------------------------------------*/
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void
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rtimer_run_next(void)
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{
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struct rtimer *t;
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if(next_rtimer == NULL) {
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return;
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}
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t = next_rtimer;
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next_rtimer = NULL;
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t->func(t, t->ptr);
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if(next_rtimer != NULL) {
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rtimer_arch_schedule(next_rtimer->time);
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}
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return;
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}
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/*---------------------------------------------------------------------------*/
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