127 lines
3.3 KiB
C
127 lines
3.3 KiB
C
/* $FreeBSD$ */
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/* $KAME: timer.c,v 1.9 2002/06/10 19:59:47 itojun Exp $ */
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/*
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* Copyright (C) 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/time.h>
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#include <sys/queue.h>
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#include <sys/socket.h>
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#include <syslog.h>
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#include <stdio.h>
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#include <inttypes.h>
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#include "timer.h"
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#include "timer_subr.h"
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struct timeval *
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rtadvd_timer_rest(struct rtadvd_timer *rat)
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{
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static struct timeval returnval, now;
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gettimeofday(&now, NULL);
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if (TIMEVAL_LEQ(&rat->rat_tm, &now)) {
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syslog(LOG_DEBUG,
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"<%s> a timer must be expired, but not yet",
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__func__);
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returnval.tv_sec = returnval.tv_usec = 0;
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}
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else
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TIMEVAL_SUB(&rat->rat_tm, &now, &returnval);
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return (&returnval);
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}
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/* result = a + b */
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void
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TIMEVAL_ADD(struct timeval *a, struct timeval *b, struct timeval *result)
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{
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long l;
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if ((l = a->tv_usec + b->tv_usec) < MILLION) {
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result->tv_usec = l;
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result->tv_sec = a->tv_sec + b->tv_sec;
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}
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else {
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result->tv_usec = l - MILLION;
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result->tv_sec = a->tv_sec + b->tv_sec + 1;
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}
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}
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/*
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* result = a - b
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* XXX: this function assumes that a >= b.
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*/
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void
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TIMEVAL_SUB(struct timeval *a, struct timeval *b, struct timeval *result)
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{
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long l;
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if ((l = a->tv_usec - b->tv_usec) >= 0) {
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result->tv_usec = l;
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result->tv_sec = a->tv_sec - b->tv_sec;
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}
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else {
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result->tv_usec = MILLION + l;
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result->tv_sec = a->tv_sec - b->tv_sec - 1;
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}
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}
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char *
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sec2str(uint32_t s, char *buf)
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{
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uint32_t day;
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uint32_t hour;
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uint32_t min;
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uint32_t sec;
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char *p;
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min = s / 60;
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sec = s % 60;
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hour = min / 60;
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min = min % 60;
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day = hour / 24;
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hour = hour % 24;
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p = buf;
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if (day > 0)
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p += sprintf(p, "%" PRIu32 "d", day);
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if (hour > 0)
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p += sprintf(p, "%" PRIu32 "h", hour);
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if (min > 0)
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p += sprintf(p, "%" PRIu32 "m", min);
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if ((p == buf) || (sec > 0 && p > buf))
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sprintf(p, "%" PRIu32 "s", sec);
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return (buf);
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}
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