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/*
htop - NetworkIOMeter.c
(C) 2020-2023 htop dev team
Released under the GNU GPLv2+, see the COPYING file
in the source distribution for its full text.
*/
#include "config.h" // IWYU pragma: keep
#include "NetworkIOMeter.h"
#include <stdbool.h>
#include "CRT.h"
#include "Machine.h"
#include "Macros.h"
#include "Meter.h"
#include "Object.h"
#include "Platform.h"
#include "RichString.h"
#include "Row.h"
#include "XUtils.h"
static const int NetworkIOMeter_attributes[] = {
METER_VALUE_IOREAD,
METER_VALUE_IOWRITE,
};
static MeterRateStatus status = RATESTATUS_INIT;
static double cached_rxb_diff;
static char cached_rxb_diff_str[6];
static uint32_t cached_rxp_diff;
static double cached_txb_diff;
static char cached_txb_diff_str[6];
static uint32_t cached_txp_diff;
static void NetworkIOMeter_updateValues(Meter* this) {
const Machine* host = this->host;
static uint64_t cached_last_update = 0;
uint64_t passedTimeInMs = host->realtimeMs - cached_last_update;
bool hasNewData = false;
NetworkIOData data = {0};
/* update only every 500ms to have a sane span for rate calculation */
if (passedTimeInMs > 500) {
hasNewData = Platform_getNetworkIO(&data);
if (!hasNewData) {
status = RATESTATUS_NODATA;
} else if (cached_last_update == 0) {
status = RATESTATUS_INIT;
} else if (passedTimeInMs > 30000) {
status = RATESTATUS_STALE;
} else {
status = RATESTATUS_DATA;
}
cached_last_update = host->realtimeMs;
}
if (hasNewData) {
static uint64_t cached_rxb_total;
static uint64_t cached_rxp_total;
static uint64_t cached_txb_total;
static uint64_t cached_txp_total;
if (status != RATESTATUS_INIT) {
uint64_t diff;
if (data.bytesReceived > cached_rxb_total) {
diff = data.bytesReceived - cached_rxb_total;
diff = (1000 * diff) / passedTimeInMs; /* convert to B/s */
cached_rxb_diff = diff;
} else {
cached_rxb_diff = 0;
}
Meter_humanUnit(cached_rxb_diff_str, cached_rxb_diff / ONE_K, sizeof(cached_rxb_diff_str));
if (data.packetsReceived > cached_rxp_total) {
diff = data.packetsReceived - cached_rxp_total;
diff = (1000 * diff) / passedTimeInMs; /* convert to pkts/s */
cached_rxp_diff = (uint32_t)diff;
} else {
cached_rxp_diff = 0;
}
if (data.bytesTransmitted > cached_txb_total) {
diff = data.bytesTransmitted - cached_txb_total;
diff = (1000 * diff) / passedTimeInMs; /* convert to B/s */
cached_txb_diff = diff;
} else {
cached_txb_diff = 0;
}
Meter_humanUnit(cached_txb_diff_str, cached_txb_diff / ONE_K, sizeof(cached_txb_diff_str));
if (data.packetsTransmitted > cached_txp_total) {
diff = data.packetsTransmitted - cached_txp_total;
diff = (1000 * diff) / passedTimeInMs; /* convert to pkts/s */
cached_txp_diff = (uint32_t)diff;
} else {
cached_txp_diff = 0;
}
}
cached_rxb_total = data.bytesReceived;
cached_rxp_total = data.packetsReceived;
cached_txb_total = data.bytesTransmitted;
cached_txp_total = data.packetsTransmitted;
}
this->values[0] = cached_rxb_diff;
this->values[1] = cached_txb_diff;
if (status == RATESTATUS_NODATA) {
xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "no data");
return;
}
if (status == RATESTATUS_INIT) {
xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "init");
return;
}
if (status == RATESTATUS_STALE) {
xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "stale");
return;
}
xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "rx:%siB/s tx:%siB/s %u/%upkts/s",
cached_rxb_diff_str, cached_txb_diff_str, cached_rxp_diff, cached_txp_diff);
}
static void NetworkIOMeter_display(ATTR_UNUSED const Object* cast, RichString* out) {
switch (status) {
case RATESTATUS_NODATA:
RichString_writeAscii(out, CRT_colors[METER_VALUE_ERROR], "no data");
return;
case RATESTATUS_INIT:
RichString_writeAscii(out, CRT_colors[METER_VALUE], "initializing...");
return;
case RATESTATUS_STALE:
RichString_writeAscii(out, CRT_colors[METER_VALUE_WARN], "stale data");
return;
case RATESTATUS_DATA:
break;
}
char buffer[64];
RichString_writeAscii(out, CRT_colors[METER_TEXT], "rx: ");
RichString_appendAscii(out, CRT_colors[METER_VALUE_IOREAD], cached_rxb_diff_str);
RichString_appendAscii(out, CRT_colors[METER_VALUE_IOREAD], "iB/s");
RichString_appendAscii(out, CRT_colors[METER_TEXT], " tx: ");
RichString_appendAscii(out, CRT_colors[METER_VALUE_IOWRITE], cached_txb_diff_str);
RichString_appendAscii(out, CRT_colors[METER_VALUE_IOWRITE], "iB/s");
int len = xSnprintf(buffer, sizeof(buffer), " (%u/%u pkts/s) ", cached_rxp_diff, cached_txp_diff);
RichString_appendnAscii(out, CRT_colors[METER_TEXT], buffer, len);
}
const MeterClass NetworkIOMeter_class = {
.super = {
.extends = Class(Meter),
.delete = Meter_delete,
.display = NetworkIOMeter_display
},
.updateValues = NetworkIOMeter_updateValues,
.defaultMode = TEXT_METERMODE,
.supportedModes = METERMODE_DEFAULT_SUPPORTED,
.maxItems = 2,
.isPercentChart = false,
.total = 1.0,
.attributes = NetworkIOMeter_attributes,
.name = "NetworkIO",
.uiName = "Network IO",
.caption = "Network: "
};
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