1 /****************************************************************************
3 ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/legal
6 ** This file is part of the Qt Solutions component.
8 ** $QT_BEGIN_LICENSE:BSD$
9 ** You may use this file under the terms of the BSD license as follows:
11 ** "Redistribution and use in source and binary forms, with or without
12 ** modification, are permitted provided that the following conditions are
14 ** * Redistributions of source code must retain the above copyright
15 ** notice, this list of conditions and the following disclaimer.
16 ** * Redistributions in binary form must reproduce the above copyright
17 ** notice, this list of conditions and the following disclaimer in
18 ** the documentation and/or other materials provided with the
20 ** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
21 ** of its contributors may be used to endorse or promote products derived
22 ** from this software without specific prior written permission.
25 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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35 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
39 ****************************************************************************/
41 #ifndef QTLOCKEDFILE_H
42 #define QTLOCKEDFILE_H
50 # if !defined(QT_QTLOCKEDFILE_EXPORT) && !defined(QT_QTLOCKEDFILE_IMPORT)
51 # define QT_QTLOCKEDFILE_EXPORT
52 # elif defined(QT_QTLOCKEDFILE_IMPORT)
53 # if defined(QT_QTLOCKEDFILE_EXPORT)
54 # undef QT_QTLOCKEDFILE_EXPORT
56 # define QT_QTLOCKEDFILE_EXPORT __declspec(dllimport)
57 # elif defined(QT_QTLOCKEDFILE_EXPORT)
58 # undef QT_QTLOCKEDFILE_EXPORT
59 # define QT_QTLOCKEDFILE_EXPORT __declspec(dllexport)
62 # define QT_QTLOCKEDFILE_EXPORT
65 namespace QtLP_Private {
67 class QT_QTLOCKEDFILE_EXPORT QtLockedFile : public QFile
70 enum LockMode { NoLock = 0, ReadLock, WriteLock };
73 QtLockedFile(const QString &name);
76 bool open(OpenMode mode);
78 bool lock(LockMode mode, bool block = true);
80 bool isLocked() const;
81 LockMode lockMode() const;
87 QVector<Qt::HANDLE> rmutexes;
90 Qt::HANDLE getMutexHandle(int idx, bool doCreate);
91 bool waitMutex(Qt::HANDLE mutex, bool doBlock);