As pointed out by Guy: timestats uses packet_info so it belongs in epan

not wsutil.

svn path=/trunk/; revision=50159

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;
+}