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wireshark/ui/io_graph_item.h

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/** @file
*
* Definitions and functions for I/O graph items
*
* Copied from gtk/io_stat.c, (c) 2002 Ronnie Sahlberg
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __IO_GRAPH_ITEM_H__
#define __IO_GRAPH_ITEM_H__
#include "cfile.h"
#include <wsutil/ws_assert.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
typedef enum {
IOG_ITEM_UNIT_FIRST,
IOG_ITEM_UNIT_PACKETS = IOG_ITEM_UNIT_FIRST,
IOG_ITEM_UNIT_BYTES,
IOG_ITEM_UNIT_BITS,
IOG_ITEM_UNIT_CALC_SUM,
IOG_ITEM_UNIT_CALC_FRAMES,
IOG_ITEM_UNIT_CALC_FIELDS,
IOG_ITEM_UNIT_CALC_MAX,
IOG_ITEM_UNIT_CALC_MIN,
IOG_ITEM_UNIT_CALC_AVERAGE,
IOG_ITEM_UNIT_CALC_LOAD,
IOG_ITEM_UNIT_LAST = IOG_ITEM_UNIT_CALC_LOAD,
NUM_IOG_ITEM_UNITS
} io_graph_item_unit_t;
typedef struct _io_graph_item_t {
guint32 frames; /* always calculated, will hold number of frames*/
guint64 bytes; /* always calculated, will hold number of bytes*/
guint64 fields;
gint64 int_max;
gint64 int_min;
gint64 int_tot;
/* XXX - Why do we always use 64-bit ints but split floats between
* gfloat and gdouble?
*/
gfloat float_max;
gfloat float_min;
gfloat float_tot;
gdouble double_max;
gdouble double_min;
gdouble double_tot;
nstime_t time_max;
nstime_t time_min;
nstime_t time_tot;
guint32 first_frame_in_invl;
guint32 extreme_frame_in_invl; /* frame with min/max value */
guint32 last_frame_in_invl;
} io_graph_item_t;
/** Reset (zero) an io_graph_item_t.
*
* @param items [in,out] Array containing the items to reset.
* @param count [in] The number of items in the array.
*/
static inline void
reset_io_graph_items(io_graph_item_t *items, gsize count) {
io_graph_item_t *item;
gsize i;
for (i = 0; i < count; i++) {
item = &items[i];
item->frames = 0;
item->bytes = 0;
item->fields = 0;
item->int_max = 0;
item->int_min = 0;
item->int_tot = 0;
item->float_max = 0;
item->float_min = 0;
item->float_tot = 0;
item->double_max = 0;
item->double_min = 0;
item->double_tot = 0;
nstime_set_zero(&item->time_max);
nstime_set_zero(&item->time_min);
nstime_set_zero(&item->time_tot);
item->first_frame_in_invl = 0;
item->extreme_frame_in_invl = 0;
item->last_frame_in_invl = 0;
}
}
/** Get the interval (array index) for a packet
*
* It is up to the caller to determine if the return value is valid.
*
* @param [in] pinfo Packet of interest.
* @param [in] interval Time interval in milliseconds.
* @return Array index on success, -1 on failure.
*/
int get_io_graph_index(packet_info *pinfo, int interval);
/** Check field and item unit compatibility
*
* @param field_name [in] Header field name to check
* @param hf_index [out] Assigned the header field index corresponding to field_name if valid.
* Can be NULL.
* @param item_unit [in] The type of unit to calculate. From IOG_ITEM_UNITS.
* @return NULL if compatible, otherwise an error string. The string must
* be freed by the caller.
*/
GString *check_field_unit(const char *field_name, int *hf_index, io_graph_item_unit_t item_unit);
/** Get the value at the given interval (idx) for the current value unit.
*
* @param items [in] Array containing the item to get.
* @param val_units [in] The type of unit to calculate. From IOG_ITEM_UNITS.
* @param idx [in] Index of the item to get.
* @param hf_index [in] Header field index for advanced statistics.
* @param cap_file [in] Capture file.
* @param interval [in] Timing interval in ms.
* @param cur_idx [in] Current index.
*/
double get_io_graph_item(const io_graph_item_t *items, io_graph_item_unit_t val_units, int idx, int hf_index, const capture_file *cap_file, int interval, int cur_idx);
/** Update the values of an io_graph_item_t.
*
* Frame and byte counts are always calculated. If edt is non-NULL advanced
* statistics are calculated using hfindex.
*
* @param items [in,out] Array containing the item to update.
* @param idx [in] Index of the item to update.
* @param pinfo [in] Packet containing update information.
* @param edt [in] Dissection information for advanced statistics. May be NULL.
* @param hf_index [in] Header field index for advanced statistics.
* @param item_unit [in] The type of unit to calculate. From IOG_ITEM_UNITS.
* @param interval [in] Timing interval in ms.
* @return TRUE if the update was successful, otherwise FALSE.
*/
static inline gboolean
update_io_graph_item(io_graph_item_t *items, int idx, packet_info *pinfo, epan_dissect_t *edt, int hf_index, int item_unit, guint32 interval) {
io_graph_item_t *item = &items[idx];
/* Set the first and last frame num in current interval matching the target field+filter */
if (item->first_frame_in_invl == 0) {
item->first_frame_in_invl = pinfo->num;
}
item->last_frame_in_invl = pinfo->num;
if (edt && hf_index >= 0) {
GPtrArray *gp;
guint i;
gp = proto_get_finfo_ptr_array(edt->tree, hf_index);
if (!gp) {
return FALSE;
}
/* Update the appropriate counters. If fields == 0, this is the first seen
* value so set any min/max values accordingly. */
for (i=0; i < gp->len; i++) {
gint64 new_int64;
guint64 new_uint64;
float new_float;
double new_double;
const nstime_t *new_time;
switch (proto_registrar_get_ftype(hf_index)) {
case FT_UINT8:
case FT_UINT16:
case FT_UINT24:
case FT_UINT32:
new_uint64 = fvalue_get_uinteger(&((field_info *)gp->pdata[i])->value);
if ((new_uint64 > (guint64)item->int_max) || (item->fields == 0)) {
item->int_max = new_uint64;
item->double_max = (gdouble)new_uint64;
if (item_unit == IOG_ITEM_UNIT_CALC_MAX) {
item->extreme_frame_in_invl = pinfo->num;
}
}
if ((new_uint64 < (guint64)item->int_min) || (item->fields == 0)) {
item->int_min = new_uint64;
item->double_min = (gdouble)new_uint64;
if (item_unit == IOG_ITEM_UNIT_CALC_MIN) {
item->extreme_frame_in_invl = pinfo->num;
}
}
item->int_tot += new_uint64;
item->double_tot += (gdouble)new_uint64;
item->fields++;
break;
case FT_INT8:
case FT_INT16:
case FT_INT24:
case FT_INT32:
new_int64 = fvalue_get_sinteger(&((field_info *)gp->pdata[i])->value);
if ((new_int64 > item->int_max) || (item->fields == 0)) {
item->int_max = new_int64;
item->double_max = (gdouble)new_int64;
if (item_unit == IOG_ITEM_UNIT_CALC_MAX) {
item->extreme_frame_in_invl = pinfo->num;
}
}
if ((new_int64 < item->int_min) || (item->fields == 0)) {
item->int_min = new_int64;
item->double_min = (gdouble)new_int64;
if (item_unit == IOG_ITEM_UNIT_CALC_MIN) {
item->extreme_frame_in_invl = pinfo->num;
}
}
item->int_tot += new_int64;
item->double_tot += (gdouble)new_int64;
item->fields++;
break;
case FT_UINT40:
case FT_UINT48:
case FT_UINT56:
case FT_UINT64:
new_uint64 = fvalue_get_uinteger64(&((field_info *)gp->pdata[i])->value);
if ((new_uint64 > (guint64)item->int_max) || (item->fields == 0)) {
item->int_max = new_uint64;
item->double_max = (gdouble)new_uint64;
if (item_unit == IOG_ITEM_UNIT_CALC_MAX) {
item->extreme_frame_in_invl = pinfo->num;
}
}
if ((new_uint64 < (guint64)item->int_min) || (item->fields == 0)) {
item->int_min = new_uint64;
item->double_min = (gdouble)new_uint64;
if (item_unit == IOG_ITEM_UNIT_CALC_MIN) {
item->extreme_frame_in_invl = pinfo->num;
}
}
item->int_tot += new_uint64;
item->double_tot += (gdouble)new_uint64;
item->fields++;
break;
case FT_INT40:
case FT_INT48:
case FT_INT56:
case FT_INT64:
new_int64 = fvalue_get_sinteger64(&((field_info *)gp->pdata[i])->value);
if ((new_int64 > item->int_max) || (item->fields == 0)) {
item->int_max = new_int64;
item->double_max = (gdouble)new_int64;
if (item_unit == IOG_ITEM_UNIT_CALC_MAX) {
item->extreme_frame_in_invl = pinfo->num;
}
}
if ((new_int64 < item->int_min) || (item->fields == 0)) {
item->int_min = new_int64;
item->double_min = (gdouble)new_int64;
if (item_unit == IOG_ITEM_UNIT_CALC_MIN) {
item->extreme_frame_in_invl = pinfo->num;
}
}
item->int_tot += new_int64;
item->double_tot += (gdouble)new_int64;
item->fields++;
break;
case FT_FLOAT:
new_float = (gfloat)fvalue_get_floating(&((field_info *)gp->pdata[i])->value);
if ((new_float > item->float_max) || (item->fields == 0)) {
item->float_max = new_float;
if (item_unit == IOG_ITEM_UNIT_CALC_MAX) {
item->extreme_frame_in_invl = pinfo->num;
}
}
if ((new_float < item->float_min) || (item->fields == 0)) {
item->float_min = new_float;
if (item_unit == IOG_ITEM_UNIT_CALC_MIN) {
item->extreme_frame_in_invl = pinfo->num;
}
}
item->float_tot += new_float;
item->fields++;
break;
case FT_DOUBLE:
new_double = fvalue_get_floating(&((field_info *)gp->pdata[i])->value);
if ((new_double > item->double_max) || (item->fields == 0)) {
item->double_max = new_double;
if (item_unit == IOG_ITEM_UNIT_CALC_MAX) {
item->extreme_frame_in_invl = pinfo->num;
}
}
if ((new_double < item->double_min) || (item->fields == 0)) {
item->double_min = new_double;
if (item_unit == IOG_ITEM_UNIT_CALC_MIN) {
item->extreme_frame_in_invl = pinfo->num;
}
}
item->double_tot += new_double;
item->fields++;
break;
case FT_RELATIVE_TIME:
new_time = fvalue_get_time(&((field_info *)gp->pdata[i])->value);
switch (item_unit) {
case IOG_ITEM_UNIT_CALC_LOAD:
{
guint64 t, pt; /* time in us */
int j;
/*
* Add the time this call spanned each interval according to its contribution
* to that interval.
*/
t = new_time->secs;
t = t * 1000000 + new_time->nsecs / 1000;
j = idx;
/*
* Handle current interval
*/
pt = pinfo->rel_ts.secs * 1000000 + pinfo->rel_ts.nsecs / 1000;
pt = pt % (interval * 1000);
if (pt > t) {
pt = t;
}
while (t) {
io_graph_item_t *load_item;
load_item = &items[j];
load_item->time_tot.nsecs += (int) (pt * 1000);
if (load_item->time_tot.nsecs > 1000000000) {
load_item->time_tot.secs++;
load_item->time_tot.nsecs -= 1000000000;
}
if (j == 0) {
break;
}
j--;
t -= pt;
if (t > (guint64) interval * 1000) {
pt = (guint64) interval * 1000;
} else {
pt = t;
}
}
break;
}
default:
if ( (new_time->secs > item->time_max.secs)
|| ( (new_time->secs == item->time_max.secs)
&& (new_time->nsecs > item->time_max.nsecs))
|| (item->fields == 0)) {
item->time_max = *new_time;
if (item_unit == IOG_ITEM_UNIT_CALC_MAX) {
item->extreme_frame_in_invl = pinfo->num;
}
}
if ( (new_time->secs<item->time_min.secs)
|| ( (new_time->secs == item->time_min.secs)
&& (new_time->nsecs < item->time_min.nsecs))
|| (item->fields == 0)) {
item->time_min = *new_time;
if (item_unit == IOG_ITEM_UNIT_CALC_MIN) {
item->extreme_frame_in_invl = pinfo->num;
}
}
nstime_add(&item->time_tot, new_time);
item->fields++;
}
break;
default:
if ((item_unit == IOG_ITEM_UNIT_CALC_FRAMES) ||
(item_unit == IOG_ITEM_UNIT_CALC_FIELDS)) {
/*
* It's not an integeresque type, but
* all we want to do is count it, so
* that's all right.
*/
item->fields++;
}
else {
/*
* "Can't happen"; see the "check that the
* type is compatible" check in
* filter_callback().
*/
ws_assert_not_reached();
}
break;
}
}
}
item->frames++;
item->bytes += pinfo->fd->pkt_len;
return TRUE;
}
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __IO_GRAPH_ITEM_H__ */
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