AramJonghu
467e44bb9f
C++ / build (pull_request) Failing after 15s
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Lint & Format (Rust) / lint-format (pull_request) Successful in 1m45s
60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
#include "memory.hpp"
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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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Memory::Memory(QObject* parent) : TickingService(parent) {}
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qreal Memory::used() const {
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return m_used;
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}
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qreal Memory::total() const {
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return m_total;
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}
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qreal Memory::percentage() const {
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return m_total > 0.0 ? m_used / m_total : 0.0;
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}
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void Memory::tick() {
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QFile f(QStringLiteral("/proc/meminfo"));
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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 reTotal(
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QStringLiteral("MemTotal: *(\\d+)"));
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static const QRegularExpression reAvail(
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QStringLiteral("MemAvailable: *(\\d+)"));
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const QString text = QString::fromLatin1(data);
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const auto totalMatch = reTotal.match(text);
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const auto availMatch = reAvail.match(text);
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if (!totalMatch.hasMatch() || !availMatch.hasMatch()) {
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return;
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}
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const quint64 totalKib = totalMatch.captured(1).toULongLong();
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const quint64 availKib = availMatch.captured(1).toULongLong();
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if (totalKib == 0) {
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return;
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}
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const quint64 usedKib = totalKib > availKib ? totalKib - availKib : 0;
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if (totalKib == m_lastTotal && usedKib == m_lastUsed) {
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return;
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}
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m_lastTotal = totalKib;
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m_lastUsed = usedKib;
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m_total = static_cast<qreal>(totalKib);
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m_used = static_cast<qreal>(usedKib);
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Q_EMIT changed();
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}
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} // namespace ZShell::services
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