xref: /freebsd/usr.sbin/rtadvd/timer_subr.h (revision fd45b686f9d92f583366c75b22c04c7ee49709c0)
1 /*	$KAME: timer.h,v 1.5 2002/05/31 13:30:38 jinmei Exp $	*/
2 
3 /*-
4  * SPDX-License-Identifier: BSD-3-Clause
5  *
6  * Copyright (C) 1998 WIDE Project.
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. Neither the name of the project nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #define	SSBUFLEN	1024
35 
36 #define TS_CMP(tsp, usp, cmp)						\
37 	(((tsp)->tv_sec == (usp)->tv_sec) ?				\
38 	    ((tsp)->tv_nsec cmp (usp)->tv_nsec) :			\
39 	    ((tsp)->tv_sec cmp (usp)->tv_sec))
40 #define TS_ADD(tsp, usp, vsp)						\
41 	do {								\
42 		(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec;		\
43 		(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec;	\
44 		if ((vsp)->tv_nsec >= 1000000000L) {			\
45 			(vsp)->tv_sec++;				\
46 			(vsp)->tv_nsec -= 1000000000L;			\
47 		}							\
48 	} while (0)
49 #define TS_SUB(tsp, usp, vsp)						\
50 	do {								\
51 		(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;		\
52 		(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;	\
53 		if ((vsp)->tv_nsec < 0) {				\
54 			(vsp)->tv_sec--;				\
55 			(vsp)->tv_nsec += 1000000000L;			\
56 		}							\
57 	} while (0)
58 
59 struct timespec *rtadvd_timer_rest(struct rtadvd_timer *);
60 char		*sec2str(uint32_t, char *buf);
61