8352756d27
The previous example finished way too quickly and provided no real value in regards to API understanding. Previously, QtConcurrent::map was used, which was also used in other examples. We are now using QtConcurrent::filterReduce to demonstrate other functionality. Task-number: QTBUG-111165 Pick-to: 6.5 6.5.0 Change-Id: Ibd6eb119d0711cddfe8b211d460e9d67d6ce95c3 Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io> Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
// Copyright (C) 2023 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#ifndef PRIMECOUNTER_H
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#define PRIMECOUNTER_H
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#include <QtWidgets/qdialog.h>
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#include <QtCore/qfuturewatcher.h>
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#include <QtConcurrent/qtconcurrentfilter.h>
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#include <QtConcurrent/qtconcurrentreducekernel.h>
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QT_BEGIN_NAMESPACE
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class QLabel;
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class QProgressBar;
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namespace Ui {
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class PrimeCounter;
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}
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QT_END_NAMESPACE
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class PrimeCounter : public QDialog
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{
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Q_OBJECT
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using Element = unsigned long long;
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public:
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explicit PrimeCounter(QWidget* parent = nullptr);
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~PrimeCounter() override;
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private:
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static bool filterFunction(const Element &element);
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static void reduceFunction(Element &out, const Element &value);
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void fillElementList(unsigned int count);
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Ui::PrimeCounter* setupUi();
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private slots:
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void start();
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void finish();
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private:
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QList<Element> elementList;
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QFutureWatcher<Element> watcher;
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QtConcurrent::ReduceOptions currentReduceOpt;
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QElapsedTimer timer;
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QThreadPool pool;
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unsigned int stepSize;
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Ui::PrimeCounter *ui;
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};
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#endif //PRIMECOUNTER_H
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