rtimer.h

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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: rtimer.h,v 1.12 2010/09/13 20:46:02 nifi Exp $
 */
#ifndef __RTIMER_H__
#define __RTIMER_H__
 
#include "contiki-conf.h"
 
#ifndef RTIMER_CLOCK_LT
typedef unsigned short rtimer_clock_t;
#define RTIMER_CLOCK_LT(a,b)     ((signed short)((a)-(b)) < 0)
#endif /* RTIMER_CLOCK_LT */
 
#ifndef __ASIX_C51__
#include "rtimer-arch.h"
#endif
 
void rtimer_init(void);
 
struct rtimer;
 
#ifdef __ASIX_C51__
typedef void (* rtimer_callback_t)(struct rtimer *t, void *ptr) CC_REENTRANT_ARG;
#else
typedef void (* rtimer_callback_t)(struct rtimer *t, void *ptr);
#endif
 
struct rtimer {
  rtimer_clock_t time;
  rtimer_callback_t func;
  void *ptr;
};
 
enum {
  RTIMER_OK,
  RTIMER_ERR_FULL,
  RTIMER_ERR_TIME,
  RTIMER_ERR_ALREADY_SCHEDULED,
};
 
int rtimer_set(struct rtimer *task, rtimer_clock_t time,
           rtimer_clock_t duration, rtimer_callback_t func, void *ptr);
 
void rtimer_run_next(void);
 
#define RTIMER_NOW() rtimer_arch_now()
 
#define RTIMER_TIME(task) ((task)->time)
 
void rtimer_arch_init(void);
void rtimer_arch_schedule(rtimer_clock_t t);
/*rtimer_clock_t rtimer_arch_now(void);*/
 
#define RTIMER_SECOND RTIMER_ARCH_SECOND
 
#endif /* __RTIMER_H__ */