RLockedFile.h

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#ifndef RLOCKEDFILE_H
#define RLOCKEDFILE_H

#include <QtCore/QFile>
#ifdef Q_OS_WIN
#include <QtCore/QVector>
#endif

class RLockedFile : public QFile
{
public:
    enum LockMode { NoLock = 0, ReadLock, WriteLock };

    RLockedFile();
    RLockedFile(const QString &name);
    ~RLockedFile();

    bool open(OpenMode mode);

    bool lock(LockMode mode, bool block = true);
    bool unlock();
    bool isLocked() const;
    LockMode lockMode() const;

private:
#ifdef Q_OS_WIN
    Qt::HANDLE wmutex;
    Qt::HANDLE rmutex;
    QVector<Qt::HANDLE> rmutexes;
    QString mutexname;

    Qt::HANDLE getMutexHandle(int idx, bool doCreate);
    bool waitMutex(Qt::HANDLE mutex, bool doBlock);

#endif
    LockMode m_lock_mode;
};

#endif