RLockedFile.h

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#ifndef RLOCKEDFILE_H
#define RLOCKEDFILE_H
 
#include "core_global.h"
 
#include <QtCore/QFile>
#ifdef Q_OS_WIN
#include <QtCore/QVector>
#endif
 
class QCADCORE_EXPORT 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