/**************************************************************************** ** ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of a Qt Solutions component. ** ** You may use this file under the terms of the BSD license as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor ** the names of its contributors may be used to endorse or promote ** products derived from this software without specific prior written ** permission. ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ****************************************************************************/ #ifndef QTLOCKEDFILE_H #define QTLOCKEDFILE_H #include <QFile> #ifdef Q_OS_WIN #include <QVector> #endif #if defined(Q_WS_WIN) || defined(Q_OS_WIN) # if !defined(QT_QTLOCKEDFILE_EXPORT) && !defined(QT_QTLOCKEDFILE_IMPORT) # define QT_QTLOCKEDFILE_EXPORT # elif defined(QT_QTLOCKEDFILE_IMPORT) # if defined(QT_QTLOCKEDFILE_EXPORT) # undef QT_QTLOCKEDFILE_EXPORT # endif # define QT_QTLOCKEDFILE_EXPORT __declspec(dllimport) # elif defined(QT_QTLOCKEDFILE_EXPORT) # undef QT_QTLOCKEDFILE_EXPORT # define QT_QTLOCKEDFILE_EXPORT __declspec(dllexport) # endif #else # define QT_QTLOCKEDFILE_EXPORT #endif class QT_QTLOCKEDFILE_EXPORT QtLockedFile : public QFile { public: enum LockMode { NoLock = 0, ReadLock, WriteLock }; QtLockedFile(); QtLockedFile(const QString &name); ~QtLockedFile(); 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