qt-creator/src/plugins/cpptools/stringtable.h

/****************************************************************************
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** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
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** This file is part of Qt Creator.
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** General Public License version 3 as published by the Free Software
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#pragma once

#include <QAtomicInt>
#include <QMutex>
#include <QObject>
#include <QRunnable>
#include <QSet>
#include <QTimer>

namespace CppTools {
namespace Internal {

class StringTable: public QObject
{
    Q_OBJECT

public:
    StringTable();

    QString insert(const QString &string);
    void scheduleGC();

private:
    void startGC();
    void GC();

    class GCRunner: public QRunnable {
        StringTable &m_stringTable;

    public:
        GCRunner(StringTable &stringTable): m_stringTable(stringTable) {}
        virtual void run() { m_stringTable.GC(); }
    } m_gcRunner;
    friend class GCRunner;

private:
    mutable QMutex m_lock;
    QAtomicInt m_stopGCRequested;
    QSet<QString> m_strings;
    QTimer m_gcCountDown;
};

} // Internal namespace
} // CppTools namespace