xref: /freebsd/usr.sbin/rtadvd/timer_subr.h (revision f39bffc62c1395bde25d152c7f68fdf7cbaab414)
1 /*	$FreeBSD$	*/
2 /*	$KAME: timer.h,v 1.5 2002/05/31 13:30:38 jinmei Exp $	*/
3 
4 /*-
5  * SPDX-License-Identifier: BSD-3-Clause
6  *
7  * Copyright (C) 1998 WIDE Project.
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. Neither the name of the project nor the names of its contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  */
34 
35 #define	SSBUFLEN	1024
36 
37 #define TS_CMP(tsp, usp, cmp)						\
38 	(((tsp)->tv_sec == (usp)->tv_sec) ?				\
39 	    ((tsp)->tv_nsec cmp (usp)->tv_nsec) :			\
40 	    ((tsp)->tv_sec cmp (usp)->tv_sec))
41 #define TS_ADD(tsp, usp, vsp)						\
42 	do {								\
43 		(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec;		\
44 		(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec;	\
45 		if ((vsp)->tv_nsec >= 1000000000L) {			\
46 			(vsp)->tv_sec++;				\
47 			(vsp)->tv_nsec -= 1000000000L;			\
48 		}							\
49 	} while (0)
50 #define TS_SUB(tsp, usp, vsp)						\
51 	do {								\
52 		(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;		\
53 		(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;	\
54 		if ((vsp)->tv_nsec < 0) {				\
55 			(vsp)->tv_sec--;				\
56 			(vsp)->tv_nsec += 1000000000L;			\
57 		}							\
58 	} while (0)
59 
60 struct timespec *rtadvd_timer_rest(struct rtadvd_timer *);
61 char		*sec2str(uint32_t, char *buf);
62