qtmobility/src/publishsubscribe/qsystemreadwritelock_p.h
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the Qt Mobility Components.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
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    14 ** this package.
       
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    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
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    24 ** In addition, as a special exception, Nokia gives you certain additional
       
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    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #ifndef QSYSTEMREADWRITELOCK_H
       
    43 #define QSYSTEMREADWRITELOCK_H
       
    44 
       
    45 #include "qmobilityglobal.h"
       
    46 #include <QString>
       
    47 
       
    48 QTM_BEGIN_NAMESPACE
       
    49 
       
    50 class QSystemReadWriteLockPrivate;
       
    51 class Q_AUTOTEST_EXPORT QSystemReadWriteLock
       
    52 {
       
    53 public:
       
    54     enum AccessMode{Create, Open};
       
    55     enum SystemReadWriteLockError{
       
    56         NoError,
       
    57         PermissionDenied,
       
    58         KeyError,//TODO:remove this enum
       
    59         NotFound,
       
    60         LockError,//TODO: remove this enum
       
    61         OutOfResources, 
       
    62         FailedToInitialize,//TODO: remove this enum
       
    63         UnknownError
       
    64     };
       
    65 
       
    66     QSystemReadWriteLock(const QString &key, AccessMode mode = Open);
       
    67     ~QSystemReadWriteLock();
       
    68 
       
    69     bool lockForRead();
       
    70     bool lockForWrite();
       
    71     void unlock();
       
    72 
       
    73     SystemReadWriteLockError error() const;
       
    74     QString errorString() const;
       
    75 
       
    76     QString key() const;
       
    77 
       
    78 private:
       
    79     QSystemReadWriteLockPrivate *d;
       
    80 };
       
    81 
       
    82 QTM_END_NAMESPACE
       
    83 
       
    84 #endif