epan/timestats.h

   1 /* timestats.h
   2  * Routines and definitions for time statistics
   3  * Copyrigth 2003 Lars Roland
   4  *
   5  * $Id$
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #ifndef _time_stat
  27 #define _time_stat
  28
  29 #include <glib.h>
  30 #include "epan/packet_info.h"
  31 #include "wsutil/nstime.h"
  32
  33  /* Summary of time statistics*/
  34 typedef struct _timestat_t {
  35         guint32 num;     /* number of samples */
  36         guint32 min_num; /* frame number of minimum */
  37         guint32 max_num; /* frame number of maximum */
  38         nstime_t min;
  39         nstime_t max;
  40         nstime_t tot;
  41         gdouble variance;
  42 } timestat_t;
  43
  44 /* functions */
  45
  46 /* Initialize a timestat_t struct */
  47 WS_DLL_PUBLIC void time_stat_init(timestat_t *stats);
  48
  49 /* Update a timestat_t struct with a new sample */
  50 WS_DLL_PUBLIC void time_stat_update(timestat_t *stats, const nstime_t *delta, packet_info *pinfo);
  51
  52 WS_DLL_PUBLIC gdouble get_average(const nstime_t *sum, guint32 num);
  53
  54 #endif