2 /* $KAME: timer.c,v 1.9 2002/06/10 19:59:47 itojun Exp $ */
5 * Copyright (C) 1998 WIDE Project.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
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34 #include <sys/queue.h>
35 #include <sys/socket.h>
41 #include "timer_subr.h"
44 rtadvd_timer_rest(struct rtadvd_timer *rat)
46 static struct timeval returnval, now;
48 gettimeofday(&now, NULL);
49 if (TIMEVAL_LEQ(&rat->rat_tm, &now)) {
51 "<%s> a timer must be expired, but not yet",
53 returnval.tv_sec = returnval.tv_usec = 0;
56 TIMEVAL_SUB(&rat->rat_tm, &now, &returnval);
63 TIMEVAL_ADD(struct timeval *a, struct timeval *b, struct timeval *result)
67 if ((l = a->tv_usec + b->tv_usec) < MILLION) {
69 result->tv_sec = a->tv_sec + b->tv_sec;
72 result->tv_usec = l - MILLION;
73 result->tv_sec = a->tv_sec + b->tv_sec + 1;
79 * XXX: this function assumes that a >= b.
82 TIMEVAL_SUB(struct timeval *a, struct timeval *b, struct timeval *result)
86 if ((l = a->tv_usec - b->tv_usec) >= 0) {
88 result->tv_sec = a->tv_sec - b->tv_sec;
91 result->tv_usec = MILLION + l;
92 result->tv_sec = a->tv_sec - b->tv_sec - 1;
97 sec2str(uint32_t s, char *buf)
116 p += sprintf(p, "%" PRIu32 "d", day);
118 p += sprintf(p, "%" PRIu32 "h", hour);
120 p += sprintf(p, "%" PRIu32 "m", min);
122 if ((p == buf) || (sec > 0 && p > buf))
123 sprintf(p, "%" PRIu32 "s", sec);