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timer.h revision 1.1 
      1 /*
      2  * Copyright (C) 1998 WIDE Project.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. Neither the name of the project nor the names of its contributors
     14  *    may be used to endorse or promote products derived from this software
     15  *    without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
     18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
     21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 /* a < b */
     31 #define TIMEVAL_LT(a, b) (((a).tv_sec < (b).tv_sec) ||\
     32 			  (((a).tv_sec == (b).tv_sec) && \
     33 			    ((a).tv_usec < (b).tv_usec)))
     34 
     35 /* a <= b */
     36 #define TIMEVAL_LEQ(a, b) (((a).tv_sec < (b).tv_sec) ||\
     37 			   (((a).tv_sec == (b).tv_sec) &&\
     38  			    ((a).tv_usec <= (b).tv_usec)))
     39 
     40 struct rtadvd_timer {
     41 	struct rtadvd_timer *next;
     42 	struct rtadvd_timer *prev;
     43 	struct rainfo *rai;
     44 	struct timeval tm;
     45 
     46 	void (*expire) __P((void *));	/* expiration function */
     47 	void *expire_data;
     48 	void (*update) __P((void *, struct timeval *));	/* update function */
     49 	void *update_data;
     50 };
     51 
     52 void rtadvd_timer_init __P((void));
     53 struct rtadvd_timer *rtadvd_add_timer __P((void (*) __P((void *)),
     54 		void (*) __P((void *, struct timeval *)), void *, void *));
     55 void rtadvd_set_timer __P((struct timeval *, struct rtadvd_timer *));
     56 struct timeval * rtadvd_check_timer __P((void));
     57 struct timeval * rtadvd_timer_rest __P((struct rtadvd_timer *));
     58 void TIMEVAL_ADD __P((struct timeval *, struct timeval *,
     59 		      struct timeval *));
     60 void TIMEVAL_SUB __P((struct timeval *, struct timeval *,
     61 		      struct timeval *));
     62