qthreadpool.h - mozsearch

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// Copyright (C) 2016 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QTHREADPOOL_H

#define QTHREADPOOL_H

#include <QtCore/qglobal.h>

#include <QtCore/qthread.h>

#include <QtCore/qrunnable.h>

#if QT_CORE_REMOVED_SINCE(6, 6)

#include <functional>

#endif

QT_BEGIN_NAMESPACE

class QThreadPoolPrivate;

class Q_CORE_EXPORT QThreadPool : public QObject

    Q_OBJECT

    Q_DECLARE_PRIVATE(QThreadPool)

    Q_PROPERTY(int expiryTimeout READ expiryTimeout WRITE setExpiryTimeout)

    Q_PROPERTY(int maxThreadCount READ maxThreadCount WRITE setMaxThreadCount)

    Q_PROPERTY(int activeThreadCount READ activeThreadCount)

    Q_PROPERTY(uint stackSize READ stackSize WRITE setStackSize)

    Q_PROPERTY(QThread::Priority threadPriority READ threadPriority WRITE setThreadPriority)

    friend class QFutureInterfaceBase;

public:

    QThreadPool(QObject *parent = nullptr);

    ~QThreadPool();

    static QThreadPool *globalInstance();

    void start(QRunnable *runnable, int priority = 0);

    bool tryStart(QRunnable *runnable);

#if QT_CORE_REMOVED_SINCE(6, 6)

    void start(std::function<void()> functionToRun, int priority = 0);

    bool tryStart(std::function<void()> functionToRun);

#endif

    void startOnReservedThread(QRunnable *runnable);

#if QT_CORE_REMOVED_SINCE(6, 6)

    void startOnReservedThread(std::function<void()> functionToRun);

#endif

    template <typename Callable, QRunnable::if_callable<Callable> = true>

    void start(Callable &&functionToRun, int priority = 0);

    template <typename Callable, QRunnable::if_callable<Callable> = true>

    bool tryStart(Callable &&functionToRun);

    template <typename Callable, QRunnable::if_callable<Callable> = true>

    void startOnReservedThread(Callable &&functionToRun);

    int expiryTimeout() const;

    void setExpiryTimeout(int expiryTimeout);

    int maxThreadCount() const;

    void setMaxThreadCount(int maxThreadCount);

    int activeThreadCount() const;

    void setStackSize(uint stackSize);

    uint stackSize() const;

    void setThreadPriority(QThread::Priority priority);

    QThread::Priority threadPriority() const;

    void reserveThread();

    void releaseThread();

    void setServiceLevel(QThread::QualityOfService serviceLevel);

    QThread::QualityOfService serviceLevel() const;

    QT_CORE_INLINE_SINCE(6, 8)

    bool waitForDone(int msecs);

    bool waitForDone(QDeadlineTimer deadline = QDeadlineTimer::Forever);

    void clear();

    bool contains(const QThread *thread) const;

    [[nodiscard]] bool tryTake(QRunnable *runnable);

};

template <typename Callable, QRunnable::if_callable<Callable>>

void QThreadPool::start(Callable &&functionToRun, int priority)

    start(QRunnable::create(std::forward<Callable>(functionToRun)), priority);

template <typename Callable, QRunnable::if_callable<Callable>>

bool QThreadPool::tryStart(Callable &&functionToRun)

    QRunnable *runnable = QRunnable::create(std::forward<Callable>(functionToRun));

    if (tryStart(runnable))

        return true;

    delete runnable;

    return false;

template <typename Callable, QRunnable::if_callable<Callable>>

void QThreadPool::startOnReservedThread(Callable &&functionToRun)

    startOnReservedThread(QRunnable::create(std::forward<Callable>(functionToRun)));

#if QT_CORE_INLINE_IMPL_SINCE(6, 8)

bool QThreadPool::waitForDone(int msecs)

    return waitForDone(QDeadlineTimer(msecs));

#endif

QT_END_NAMESPACE

#endif