118 lines
2.6 KiB
C++
118 lines
2.6 KiB
C++
#include "cpu.hpp"
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#include "sensorslib.hpp"
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#include <cmath>
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#include <qfile.h>
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#include <qregularexpression.h>
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namespace ZShell::services {
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Cpu::Cpu(QObject* parent)
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: TickingService(parent) {
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readNameOnce();
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}
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QString Cpu::name() const {
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return m_name;
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}
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qreal Cpu::percentage() const {
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return m_percentage;
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}
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qreal Cpu::temperature() const {
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return m_temperature;
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}
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void Cpu::tick() {
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if (!m_nameLoaded) {
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readNameOnce();
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}
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refreshPercentage();
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refreshTemperature();
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}
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void Cpu::readNameOnce() {
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QFile f(QStringLiteral("/proc/cpuinfo"));
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if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) {
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return;
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}
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const QByteArray data = f.readAll();
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f.close();
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static const QRegularExpression re(QStringLiteral("model name\\s*:\\s*(.+)"));
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const auto match = re.match(QString::fromLatin1(data));
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if (!match.hasMatch()) {
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return;
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}
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const QString cleaned = cleanName(match.captured(1));
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m_nameLoaded = true;
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if (cleaned == m_name) {
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return;
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}
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m_name = cleaned;
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Q_EMIT nameChanged();
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}
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void Cpu::refreshPercentage() {
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QFile f(QStringLiteral("/proc/stat"));
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if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) {
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return;
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}
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const QByteArray data = f.readAll();
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f.close();
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static const QRegularExpression re(
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QStringLiteral("^cpu\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)"));
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const auto match = re.match(QString::fromLatin1(data));
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if (!match.hasMatch()) {
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return;
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}
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quint64 total = 0;
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quint64 idle = 0;
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for (int i = 1; i <= 7; ++i) {
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const quint64 v = match.captured(i).toULongLong();
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total += v;
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if (i == 4 || i == 5) {
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idle += v;
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}
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}
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const quint64 totalDiff = total > m_lastTotal ? total - m_lastTotal : 0;
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const quint64 idleDiff = idle > m_lastIdle ? idle - m_lastIdle : 0;
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const qreal newPerc = totalDiff > 0 ? 1.0 - static_cast<qreal>(idleDiff) / static_cast<qreal>(totalDiff) : 0.0;
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m_lastTotal = total;
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m_lastIdle = idle;
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if (std::abs(newPerc - m_percentage) > 0.0001) {
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m_percentage = newPerc;
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Q_EMIT percentageChanged();
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}
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}
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void Cpu::refreshTemperature() {
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const auto t = sensorslib::cpuPackageTemp();
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const qreal newTemp = t.value_or(0.0);
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if (std::abs(newTemp - m_temperature) > 0.05) {
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m_temperature = newTemp;
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Q_EMIT temperatureChanged();
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}
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}
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QString Cpu::cleanName(QString s) {
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static const QRegularExpression noise(
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QStringLiteral("\\(R\\)|\\(TM\\)|CPU|\\d+(?:th|nd|rd|st) Gen |Core |Processor"),
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QRegularExpression::CaseInsensitiveOption);
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static const QRegularExpression spaces(QStringLiteral("\\s+"));
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s.replace(noise, QString());
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s.replace(spaces, QStringLiteral(" "));
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return s.trimmed();
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}
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} // namespace ZShell::services
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