timer_queue.h

支持IPv6的adov路由协议（本人修改后）

/*****************************************************************************
 *
 * Copyright (C) 2001 Uppsala University & Ericsson AB.
 * Copyright (C) 2003 Simon Fraser University and NewMIC
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Authors: Erik Nordstr鰉, <[e-mail]>
 *        : Peter Lee       <[e-mail]>
 *
 *****************************************************************************/
#ifndef TIMER_QUEUE_H
#define TIMER_QUEUE_H

#ifndef NS_NO_GLOBALS
#include <sys/time.h>

#include "defs.h"

typedef void (*timeout_func_t) (void *);

struct timer {
    struct timeval timeout;
#ifdef NS_PORT
    void (NS_CLASS * handler) (void *);
#else
    timeout_func_t handler;
#endif

    void *data;
    int used;
    struct timer *next;
};

static inline long timeval_diff(struct timeval *t1, struct timeval *t2)
{
    if (!t1 || !t2)
	return -1;
    else
	return (1000000 * (t1->tv_sec - t2->tv_sec) + t1->tv_usec -
		t2->tv_usec);
}

static inline int timeval_add_msec(struct timeval *t, long msec)
{
    if (!t)
	return -1;

    t->tv_usec += msec * 1000;
    t->tv_sec += t->tv_usec / 1000000;
    t->tv_usec = t->tv_usec % 1000000;
    return 0;
}
#endif				/* NS_NO_GLOBALS */

#ifndef NS_NO_DECLARATIONS
void timer_queue_init();
int timer_remove(struct timer *t);
void timer_add_msec(struct timer *t, long msec);
int timer_timeout_now(struct timer *t);
struct timeval *timer_age_queue();

#ifdef NS_PORT
void timer_add(struct timer *t);
void timer_timeout(struct timeval *now);

#ifdef DEBUG_TIMER_QUEUE
void NS_CLASS printTQ();
#endif				/* DEBUG_TIMER_QUEUE */

#endif				/* NS_PORT */

#endif				/* NS_NO_DECLARATIONS */

#endif				/* TIMER_QUEUE_H */