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/*
* SPDX-FileCopyrightText: 2022 David Redondo <kde@david-redondo.de>
*
* SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
*/
#include "LinuxIntelGpu.h"
#include "IntelHelperLocation.h"
#include <KLocalizedString>
#include <QProcess>
#include <QStandardPaths>
#include <libudev.h>
LinuxIntelGpu::LinuxIntelGpu(const QString &id, const QString &name, udev_device *device)
: GpuDevice(id, name)
{
m_helperProcess = new QProcess(this);
m_helperProcess->setProgram(helperLocation);
m_helperProcess->setArguments({udev_device_get_sysname(device)});
connect(m_helperProcess, &QProcess::readyReadStandardOutput, this, &LinuxIntelGpu::readPerfData);
connect(m_helperProcess, &QProcess::readyReadStandardError, this, [this] {
qCritical() << m_helperProcess->readAllStandardError();
});
connect(this, &GpuDevice::subscribedChanged, this, [this](bool subscribed) {
if (subscribed) {
m_helperProcess->start();
} else {
m_helperProcess->terminate();
}
});
}
void LinuxIntelGpu::initialize()
{
GpuDevice::initialize();
m_videoUsage->setName(i18nc("@title", "Video Usage"));
m_videoUsage->setPrefix(name());
m_videoUsage->setMin(0);
m_videoUsage->setMax(100);
m_videoUsage->setUnit(KSysGuard::UnitPercent);
}
void LinuxIntelGpu::makeSensors()
{
GpuDevice::makeSensors();
m_videoUsage = new KSysGuard::SensorProperty(QStringLiteral("video"), QStringLiteral("video"), 0, this);
}
void LinuxIntelGpu::readPerfData()
{
while (m_helperProcess->canReadLine()) {
const QString line = m_helperProcess->readLine();
const auto parts = line.split("|");
if (parts.size() <= 1 || parts.size() % 2 == 0) {
continue;
}
const quint64 timestamp = parts[0].toULong();
const quint64 timediff = timestamp - lastTimeStamp;
const double timeDiffSeconds = timediff / static_cast<double>(std::chrono::nanoseconds(std::chrono::seconds(1)).count());
lastTimeStamp = timestamp;
for (int i = 1; i < parts.size(); i += 2) {
if (parts[i] == QLatin1String("Frequency")) {
const quint64 frequencyCount = parts[i + 1].toULong();
m_coreFrequencyProperty->setValue((frequencyCount - lastFrequencyCount) / timeDiffSeconds);
lastFrequencyCount = frequencyCount;
} else {
KSysGuard::SensorProperty *property = nullptr;
if (parts[i] == QLatin1String("Render")) {
property = m_usageProperty;
} else if (parts[i] == QLatin1String("Video")) {
property = m_videoUsage;
}
if (!property) {
continue;
}
const auto value = parts[i + 1].toULong();
auto &lastUsage = m_lastUsages[property];
property->setValue((value - lastUsage) * 100.0 / timediff);
lastUsage = value;
}
}
}
}
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