/* * 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;}