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// Copyright (C) 2021 The Qt Company Ltd.
// Copyright (C) 2019 Luxoft Sweden AB
// Copyright (C) 2018 Pelagicore AG
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "cpustatus.h"
#include <QThread>
using namespace Qt::StringLiterals;
/*!
\qmltype CpuStatus
\inqmlmodule QtApplicationManager
\ingroup common-instantiatable
\brief Provides information on the CPU status.
As the name implies, CpuStatus provides information on the status of the CPU. Its property
values are updated whenever the method update() is called.
You can use this component as a MonitorModel data source if you want to plot its previous
values over time.
\qml
import QtQuick
import QtApplicationManager
...
MonitorModel {
CpuStatus {}
}
\endqml
You can also use it alongside a Timer for instance, when you're only interested in its current
value.
\qml
import QtQuick
import QtApplicationManager
...
CpuStatus { id: cpuStatus }
Timer {
interval: 500
running: true
repeat: true
onTriggered: cpuStatus.update()
}
Text {
property string loadPercent: Number(cpuStatus.cpuLoad * 100).toLocaleString(Qt.locale("en_US"), 'f', 1)
text: "cpuLoad: " + loadPercent + "%"
}
\endqml
*/
QT_USE_NAMESPACE_AM
CpuStatus::CpuStatus(QObject *parent)
: QObject(parent)
, m_cpuReader(new CpuReader)
, m_cpuLoad(0)
{
}
/*!
\qmlproperty real CpuStatus::cpuLoad
\readonly
Holds the overall system's CPU utilization at the point when update() was last called, as a
value ranging from \c 0 (inclusive, completely idle) to \c 1 (inclusive, fully busy).
\sa update
*/
qreal CpuStatus::cpuLoad() const
{
return m_cpuLoad;
}
/*!
\qmlproperty int CpuStatus::cpuCores
\readonly
The number of physical CPU cores that are installed on the system.
*/
int CpuStatus::cpuCores() const
{
return QThread::idealThreadCount();
}
/*!
\qmlmethod CpuStatus::update
Updates the cpuLoad property.
\sa cpuLoad
*/
void CpuStatus::update()
{
qreal newLoad = m_cpuReader->readLoadValue();
if (!qFuzzyCompare(newLoad, m_cpuLoad)) {
m_cpuLoad = newLoad;
emit cpuLoadChanged();
}
}
/*!
\qmlproperty list<string> CpuStatus::roleNames
\readonly
Names of the roles provided by CpuStatus when used as a MonitorModel data source.
\sa MonitorModel
*/
QStringList CpuStatus::roleNames() const
{
return { u"cpuLoad"_s };
}
#include "moc_cpustatus.cpp"
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