63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
|
/* $OpenBSD: time.c,v 1.5 2005/08/08 08:05:34 espie Exp $ */
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1983, 1993
|
||
|
|
* The Regents of the University of California. All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* 3. Neither the name of the University nor the names of its contributors
|
||
|
|
* may be used to endorse or promote products derived from this software
|
||
|
|
* without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
* SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <time.h>
|
||
|
|
|
||
|
|
time_t
|
||
|
|
time(time_t *t)
|
||
|
|
{
|
||
|
|
struct timeval tt;
|
||
|
|
|
||
|
|
if (gettimeofday(&tt, (struct timezone *)0) < 0)
|
||
|
|
return (-1);
|
||
|
|
if (t)
|
||
|
|
*t = (time_t)tt.tv_sec;
|
||
|
|
return (tt.tv_sec);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
clock_t
|
||
|
|
clock(void)
|
||
|
|
{
|
||
|
|
struct timespec tm;
|
||
|
|
static int clock_inited;
|
||
|
|
static clock_t clock_start;
|
||
|
|
clock_t now;
|
||
|
|
|
||
|
|
clock_gettime( CLOCK_MONOTONIC, &tm);
|
||
|
|
now = tm.tv_sec * CLOCKS_PER_SEC + (tm.tv_nsec * (CLOCKS_PER_SEC/1e9));
|
||
|
|
|
||
|
|
if (!clock_inited) {
|
||
|
|
clock_start = now;
|
||
|
|
clock_inited = 1;
|
||
|
|
}
|
||
|
|
return now - clock_start;
|
||
|
|
}
|