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timer.c
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timer.c
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/* $Id$ */
/*
* Copyright (c) 2001-2010 Aaron Turner <aturner at synfin dot net>
* Copyright (c) 2013-2018 Fred Klassen <tcpreplay at appneta dot com> - AppNeta
*
* The Tcpreplay Suite of tools is free software: you can redistribute it
* and/or modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or with the authors permission any later version.
*
* The Tcpreplay Suite is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the Tcpreplay Suite. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "defines.h"
#include "common.h"
#include "timer.h"
#include <stdlib.h>
/* Miscellaneous timeval routines */
/**
* Divide tvp by div, storing the result in tvp
*/
void
timerdiv_float(struct timeval *tvp, float div)
{
double interval;
if (div == 0 || div == 1)
return;
interval = ((double)tvp->tv_sec * 1000000 + tvp->tv_usec) / (double)div;
tvp->tv_sec = interval / (int)1000000;
tvp->tv_usec = interval - (tvp->tv_sec * 1000000);
}
/* Divide tvs by div, storing the result in tvs */
void timesdiv_float(struct timespec *tvs, float div)
{
double interval;
if (div == 0 || div == 1)
return;
interval = ((double)tvs->tv_sec * 1000000000 + tvs->tv_nsec) / (double)div;
tvs->tv_sec = interval / (int)1000000000;
tvs->tv_nsec = interval - (tvs->tv_sec * 1000000000);
}
void
timerdiv(struct timeval *tvp, COUNTER div)
{
uint64_t interval;
if (div == 0 || div == 1)
return;
interval = (uint64_t)tvp->tv_sec * 1000000 + tvp->tv_usec;
do_div(interval, div);
tvp->tv_sec = interval / 1000000;
tvp->tv_usec = interval - (tvp->tv_sec * 1000000);
}
/* Divide tvs by div, storing the result in tvs */
void timesdiv(struct timespec *tvs, COUNTER div)
{
uint64_t interval;
if (div == 0 || div == 1)
return;
interval = (uint64_t)tvs->tv_sec * 1000000000 + tvs->tv_nsec;
do_div(interval, div);
tvs->tv_sec = interval / 1000000000;
tvs->tv_nsec = interval - (tvs->tv_sec * 1000000000);
}
void
init_timestamp(timestamp_t *ctx)
{
timerclear(ctx);
}