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timer.h revision 1.6.42.1 
      1 /*	$NetBSD: timer.h,v 1.6.42.1 2012/04/17 00:09:53 yamt Exp $	*/
      2 /*	$KAME: timer.h,v 1.5 2002/05/31 13:30:38 jinmei Exp $	*/
      3 
      4 /*
      5  * Copyright (C) 1998 WIDE Project.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. Neither the name of the project nor the names of its contributors
     17  *    may be used to endorse or promote products derived from this software
     18  *    without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
     21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
     24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  */
     32 
     33 /* a < b */
     34 #define TIMEVAL_LT(a, b) (((a).tv_sec < (b).tv_sec) ||\
     35 			  (((a).tv_sec == (b).tv_sec) && \
     36 			    ((a).tv_usec < (b).tv_usec)))
     37 
     38 /* a <= b */
     39 #define TIMEVAL_LEQ(a, b) (((a).tv_sec < (b).tv_sec) ||\
     40 			   (((a).tv_sec == (b).tv_sec) &&\
     41  			    ((a).tv_usec <= (b).tv_usec)))
     42 
     43 extern TAILQ_HEAD(rtadvd_timer_head_t, rtadvd_timer) ra_timer;
     44 struct rtadvd_timer {
     45 	TAILQ_ENTRY(rtadvd_timer) next;
     46 	struct rainfo *rai;
     47 	struct timeval tm;
     48 
     49 	struct rtadvd_timer *(*expire) (void *); /* expiration function */
     50 	void *expire_data;
     51 	void (*update) __P((void *, struct timeval *));	/* update function */
     52 	void *update_data;
     53 };
     54 
     55 void rtadvd_timer_init(void);
     56 struct rtadvd_timer *rtadvd_add_timer(struct rtadvd_timer *(*) (void *),
     57 		void (*) (void *, struct timeval *), void *, void *);
     58 void rtadvd_set_timer(struct timeval *, struct rtadvd_timer *);
     59 void rtadvd_remove_timer(struct rtadvd_timer **);
     60 struct timeval * rtadvd_check_timer(void);
     61 struct timeval * rtadvd_timer_rest(struct rtadvd_timer *);
     62 void TIMEVAL_ADD(struct timeval *, struct timeval *,
     63 		      struct timeval *);
     64 void TIMEVAL_SUB(struct timeval *, struct timeval *,
     65 		      struct timeval *);
     66