etimer.h

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/**
 * \addtogroup etimer
 * @{
 */

/**
 * \file
 * Event timer library header file.
 * \author
 * Adam Dunkels <adam@sics.se>
 */

/*
 * Copyright (c) 2004, 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: Adam Dunkels <adam@sics.se>
 *
 * $Id: etimer.h,v 1.4 2005/07/04 13:26:44 adam Exp $
 */
#ifndef __ETIMER_H__
#define __ETIMER_H__

#include "timer.h"
#include "process.h"

/**
 * A timer.
 *
 * This structure is used for declaring a timer. The timer must be set
 * with etimer_set() before it can be used.
 *
 * \hideinitializer
 */
struct etimer {
  struct timer timer;
  struct etimer *next;
  /*  ek_id_t pid;  */
  struct process *p;
};

void etimer_set(struct etimer *t, clock_time_t interval);
void etimer_reset(struct etimer *t);
void etimer_restart(struct etimer *t);
int etimer_expired(struct etimer *t);

PROCESS_NAME(etimer_process);

void etimer_request_poll(void);

int etimer_pending(void);

#endif /* __ETIMER_H__ */

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