diff options
author | Jeff Morriss <jeff.morriss.ws@gmail.com> | 2013-06-26 00:18:44 +0000 |
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committer | Jeff Morriss <jeff.morriss.ws@gmail.com> | 2013-06-26 00:18:44 +0000 |
commit | 74dc568ef1759e783f20c3107624a9d39cb0f539 (patch) | |
tree | 3f7a79dbc0f946aca6a4b614b299d9b956679f06 /epan/timestats.c | |
parent | e101fe1160afa2f837f12c24a80e729a89930b65 (diff) |
As pointed out by Guy: timestats uses packet_info so it belongs in epan
not wsutil.
svn path=/trunk/; revision=50159
Diffstat (limited to 'epan/timestats.c')
-rw-r--r-- | epan/timestats.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/epan/timestats.c b/epan/timestats.c new file mode 100644 index 0000000000..9803999b91 --- /dev/null +++ b/epan/timestats.c @@ -0,0 +1,92 @@ +/* timestats.c + * routines for time statistics + * Copyrigth 2003 Lars Roland + * + * $Id$ + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * This program 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 2 + * of the License, or (at your option) any later version. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" + +#include "timestats.h" + +/* Initialize a timestat_t struct */ +void +time_stat_init(timestat_t *stats) +{ + stats->num = 0; + stats->min_num = 0; + stats->max_num = 0; + nstime_set_zero(&stats->min); + nstime_set_zero(&stats->max); + nstime_set_zero(&stats->tot); + stats->variance = 0.0; +} + +/* Update a timestat_t struct with a new sample */ +void +time_stat_update(timestat_t *stats, const nstime_t *delta, packet_info *pinfo) +{ + if(stats->num==0){ + stats->max=*delta; + stats->max_num=pinfo->fd->num; + stats->min=*delta; + stats->min_num=pinfo->fd->num; + } + + if( (delta->secs<stats->min.secs) + ||( (delta->secs==stats->min.secs) + &&(delta->nsecs<stats->min.nsecs) ) ){ + stats->min=*delta; + stats->min_num=pinfo->fd->num; + } + + if( (delta->secs>stats->max.secs) + ||( (delta->secs==stats->max.secs) + &&(delta->nsecs>stats->max.nsecs) ) ){ + stats->max=*delta; + stats->max_num=pinfo->fd->num; + } + + nstime_add(&stats->tot, delta); + + stats->num++; +} + +/* + * get_average - function + * + * function to calculate the average + * returns the average as a gdouble , time base is milli seconds + */ + +gdouble get_average(const nstime_t *sum, guint32 num) +{ + gdouble average; + + if(num > 0) { + average = (double)sum->secs*1000 + (double)sum->nsecs/1000000; + average /= num; + } + else { + average = 0; + } + return average; +} |