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#include "networkspeed.h"
NetworkSpeed::NetworkSpeed() :
_lastBytes(0),
_lastMs(0),
_file(nullptr)
{
for (QString s : QStringList()
<< "/sys/class/net/boot0/statistics/rx_bytes"
<< "/sys/class/net/eth0/statistics/rx_bytes"
<< "/sys/class/net/br0/statistics/rx_bytes") {
if (!QFile::exists(s))
continue;
_file = new QFile(s);
}
if (_file != nullptr) {
_timer.start();
}
}
NetworkSpeed::~NetworkSpeed()
{
if (_file != nullptr) {
_file->deleteLater();
}
}
qint64 NetworkSpeed::read()
{
char buffer[500];
qint64 ret, now;
if (_file == nullptr || !_file->open(QIODevice::ReadOnly)) {
return -1;
}
now = _timer.elapsed();
_file->readLine(buffer, sizeof(buffer));
_file->close();
QString line(buffer);
const qint64 counter = (qint64)line.toLongLong();
if (_lastBytes == 0) {
ret = 0;
} else {
ret = counter - _lastBytes;
}
if (_lastMs < now) {
ret = (ret * 1000) / (now - _lastMs);
}
_lastMs = now;
_lastBytes = counter;
return ret;
}
const QList<qint64>& NetworkSpeed::getBars() const
{
static QList<qint64> list = QList<qint64>() << ((qint64)1024 * 1024 * 10);
return list;
}
qint64 NetworkSpeed::getMaximum()
{
return ((qint64)1024 * 1024 * 100);
}
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