rt-thread/components/net/uip/uip/uip_timer.c

/**
 * \addtogroup timer
 * @{
 */

/**
 * \file
 * Timer library implementation.
 * \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 uIP TCP/IP stack
 *
 * Author: Adam Dunkels <adam@sics.se>
 *
 * $Id: timer.c,v 1.2 2006/06/12 08:00:30 adam Exp $
 */

#include "uip_clock.h"
#include "uip_timer.h"
//#include "rtconfig.h"

/*---------------------------------------------------------------------------*/
/**
 * Set a timer.
 *
 * This function is used to set a timer for a time sometime in the
 * future. The function timer_expired() will evaluate to true after
 * the timer has expired.
 *
 * \param t A pointer to the timer
 * \param interval The interval before the timer expires.
 *
 */
void
timer_set(struct timer *t, clock_time_t interval)
{
  t->interval = interval;
  t->start = clock_time();
}
/*---------------------------------------------------------------------------*/
/**
 * Reset the timer with the same interval.
 *
 * This function resets the timer with the same interval that was
 * given to the timer_set() function. The start point of the interval
 * is the exact time that the timer last expired. Therefore, this
 * function will cause the timer to be stable over time, unlike the
 * timer_rester() function.
 *
 * \param t A pointer to the timer.
 *
 * \sa timer_restart()
 */
void
timer_reset(struct timer *t)
{
  t->start += t->interval;
}
/*---------------------------------------------------------------------------*/
/**
 * Restart the timer from the current point in time
 *
 * This function restarts a timer with the same interval that was
 * given to the timer_set() function. The timer will start at the
 * current time.
 *
 * \note A periodic timer will drift if this function is used to reset
 * it. For preioric timers, use the timer_reset() function instead.
 *
 * \param t A pointer to the timer.
 *
 * \sa timer_reset()
 */
void
timer_restart(struct timer *t)
{
  t->start = clock_time();
}
/*---------------------------------------------------------------------------*/
/**
 * Check if a timer has expired.
 *
 * This function tests if a timer has expired and returns true or
 * false depending on its status.
 *
 * \param t A pointer to the timer
 *
 * \return Non-zero if the timer has expired, zero otherwise.
 *
 */
#include "rtdef.h"
#include "uip-conf.h"
#include "uip.h"

/* eth rx/tx thread */
static struct rt_mailbox uip_mbox;
static struct rt_thread aa;

static char uip_timeout_mb_pool[4 * 4];
extern u16_t uip_len, uip_slen; 

void uip_timeout_entry2(void* parameter)
{
  
     
}
void uip_timeout_entry(void* parameter)//由于TIMEOUT函数，不参与调度
{
   // struct timer periodic_timer, arp_timer;
    static uint8_t cnt;
    int i;
	/* post message to ethernet thread */

    //if ((rt_sem_take(msg,RT_WAITING_NO)) != -RT_ETIMEOUT) 
    //if (timer_expired(&periodic_timer)) //5s enter once
    {
       //timer_reset(&periodic_timer);
       for (i = 0; i < UIP_CONNS; i++)
       {
	  uip_periodic(i);
	/* If the above function invocation resulted in data that
	   should be sent out on the network, the global variable
	   uip_len is set to a value > 0. */
	  if (uip_len > 0)
          {
	      uip_arp_out();
	      TransmitPacket();
	  }
       }
#if UIP_UDP
       for (i = 0; i < UIP_UDP_CONNS; i++) //
       {
	   uip_udp_periodic(i);
	/* If the above function invocation resulted in data that
	   should be sent out on the network, the global variable
	   uip_len is set to a value > 0. */
	   if (uip_len > 0)
           {
	      uip_arp_out();
	      TransmitPacket();
	    }
        }
#endif /* UIP_UDP */
      
       /* Call the ARP timer function every 10 seconds. */
       //if (timer_expired(&arp_timer)) 
       if (++cnt >= 2) //t
       {
	  //timer_reset(&arp_timer);
	  uip_arp_timer();
          cnt = 0;
       }
    }
  
}
int
timer_expired(struct timer *t)
{//潜在隐形bug
    if ((clock_time() - t->start) >= (clock_time_t)t->interval)
    {
        //rt_mb_send(mbox,&
    }
    
}
/*---------------------------------------------------------------------------*/

/** @} */