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/*
* Copyright (c) 2001 Mark Fullmer and The Ohio State University
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $Id: ftprof.c,v 1.7 2003/02/13 02:38:42 maf Exp $
*/
#include "ftconfig.h"
#include "ftlib.h"
#include <sys/time.h>
#include <stdio.h>
#if HAVE_STRINGS_H
#include <strings.h>
#endif
#if HAVE_STRING_H
#include <string.h>
#endif
/*
* function: ftprof_start
*
* Call before flow processing to initialize profiling.
*
* returns: < 0 error
* >= 0 ok
*/
int ftprof_start(struct ftprof *ftp)
{
bzero (ftp, sizeof (struct ftprof));
return gettimeofday(&ftp->t0, (struct timezone*)0L);
}
/*
* function: ftprof_end
*
* Call after flow processing to finish profiling.
*
* returns: < 0 error
* >= 0 ok
*/
int ftprof_end(struct ftprof *ftp, u_int64 nflows)
{
int ret;
if ((ret = gettimeofday(&ftp->t1, (struct timezone*)0L)) == -1)
return -1;
if ((ret = getrusage(RUSAGE_SELF, &ftp->r0)) == -1)
return -1;
ftp->nflows = nflows;
return 0;
}
/*
* function: ftprof_print
*
* Dump ftprof contents to std
*
* returns: < 0 error
* >= 0 ok
*/
int ftprof_print(struct ftprof *ftp, char *prog, FILE *std)
{
char fmt_buf[256];
u_long usec, sec;
double fps;
fmt_uint64(fmt_buf, ftp->nflows, FMT_JUST_LEFT);
usec = ftp->r0.ru_utime.tv_usec + ftp->r0.ru_stime.tv_usec;
sec = ftp->r0.ru_utime.tv_sec + ftp->r0.ru_stime.tv_sec;
if (usec > 1000000)
usec -= 1000000, ++sec;
fps = (double)ftp->nflows / ((double)sec + ((double)usec/1000000));
fprintf(std, "%s: processed %s flows\n", prog, fmt_buf);
fprintf(std, " sys: seconds=%lu.%-3.3lu flows/second=%f\n",
sec, usec/1000, fps);
if (ftp->t1.tv_usec < ftp->t0.tv_usec)
ftp->t1.tv_usec += 1000000, --ftp->t1.tv_sec;
usec = ftp->t1.tv_usec - ftp->t0.tv_usec;
sec = ftp->t1.tv_sec - ftp->t0.tv_sec;
fps = (double)ftp->nflows / ((double)sec + ((double)usec/1000000));
fprintf(std, " wall: seconds=%lu.%-3.3lu flows/second=%f\n",
sec, usec/1000, fps);
return 0;
}
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