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/****************************************************************************
**
** Copyright (C) 2018 Pelagicore AG
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Pelagicore Application Manager.
**
** $QT_BEGIN_LICENSE:LGPL-QTAS$
** Commercial License Usage
** Licensees holding valid commercial Qt Automotive Suite licenses may use
** this file in accordance with the commercial license agreement provided
** with the Software or, alternatively, in accordance with the terms
** contained in a written agreement between you and The Qt Company. For
** licensing terms and conditions see https://www.qt.io/terms-conditions.
** For further information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
** SPDX-License-Identifier: LGPL-3.0
**
****************************************************************************/
#pragma once
#include <QByteArray>
#include <QPair>
#include <QElapsedTimer>
#include <QObject>
#include <QtAppManCommon/global.h>
#if defined(Q_OS_LINUX)
# include <QScopedPointer>
# include <QtAppManManager/sysfsreader.h>
QT_FORWARD_DECLARE_CLASS(QSocketNotifier)
#endif
QT_BEGIN_NAMESPACE_AM
class CpuReader
{
public:
CpuReader();
qreal readLoadValue();
private:
qint64 m_lastIdle = 0;
qint64 m_lastTotal = 0;
qreal m_load = 1;
#if defined(Q_OS_LINUX)
static QScopedPointer<SysFsReader> s_sysFs;
#endif
Q_DISABLE_COPY(CpuReader)
};
class GpuVendor {
public:
enum Vendor {
Undefined = 0, // didn't try to determine the vendor yet
Unsupported,
Intel,
Nvidia
};
static Vendor get();
private:
static void fetch();
static Vendor s_vendor;
};
class GpuTool;
class GpuReader
{
public:
GpuReader();
void setActive(bool enabled);
bool isActive() const;
qreal readLoadValue();
private:
#if defined(Q_OS_LINUX)
static GpuTool *s_gpuToolProcess;
#endif
Q_DISABLE_COPY(GpuReader)
};
class MemoryReader
{
public:
MemoryReader();
#if defined(Q_OS_LINUX)
explicit MemoryReader(const QString &groupPath);
quint64 groupLimit();
#endif
quint64 totalValue() const;
quint64 readUsedValue() const;
private:
static quint64 s_totalValue;
#if defined(Q_OS_LINUX)
QScopedPointer<SysFsReader> m_sysFs;
const QString m_groupPath;
#elif defined(Q_OS_MACOS) || defined(Q_OS_IOS)
static int s_pageSize;
#endif
Q_DISABLE_COPY(MemoryReader)
};
class IoReader
{
public:
IoReader(const char *device);
~IoReader();
qreal readLoadValue();
private:
#if defined(Q_OS_LINUX)
QElapsedTimer m_lastCheck;
qint64 m_lastIoTime = 0;
qreal m_load = 1;
QScopedPointer<SysFsReader> m_sysFs;
#endif
Q_DISABLE_COPY(IoReader)
};
class MemoryThreshold : public QObject
{
Q_OBJECT
public:
MemoryThreshold(const QList<qreal> &thresholds);
~MemoryThreshold();
QList<qreal> thresholdPercentages() const;
bool isEnabled() const;
bool setEnabled(bool enabled);
#if defined(Q_OS_LINUX)
bool setEnabled(bool enabled, const QString &groupPath, MemoryReader *reader);
#endif
signals:
void thresholdTriggered();
private:
bool m_initialized = false;
bool m_enabled = false;
QList<qreal> m_thresholds;
#if defined(Q_OS_LINUX)
private slots:
void readEventFd();
private:
int m_eventFd = -1;
int m_controlFd = -1;
int m_usageFd = -1;
QSocketNotifier *m_notifier = nullptr;
#endif
};
class MemoryWatcher : public QObject
{
Q_OBJECT
public:
MemoryWatcher(QObject *parent);
void setThresholds(qreal warning, qreal critical);
bool startWatching(const QString &groupPath = QString());
void checkMemoryConsumption();
signals:
void memoryLow();
void memoryCritical();
private:
qreal m_warning = 75.0;
qreal m_critical = 90.0;
qreal m_memLimit;
bool hasMemoryLowWarning = false;
bool hasMemoryCriticalWarning = false;
QScopedPointer<MemoryThreshold> m_threshold;
QScopedPointer<MemoryReader> m_reader;
};
#if defined(Q_OS_LINUX)
// Parses the file /proc/$PID/cgroup, returning a map groupName->path
// eg: map["memory"] == "/user.slice"
QMap<QByteArray, QByteArray> fetchCGroupProcessInfo(qint64 pid);
// Where the filesystem root directory is located. This exists solely to enable testing.
// In production it's naturally "/"
extern QString g_systemRootDir;
#endif
QT_END_NAMESPACE_AM
// We mean it. Dummy comment since syncqt needs this also for completely private Qt modules.
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