/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the Qt Mobility Components.
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** No Commercial Usage
** This file contains pre-release code and may not be distributed.
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** contained in the Technology Preview License Agreement accompanying
** this package.
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** GNU Lesser General Public License Usage
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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**
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****************************************************************************/

#ifndef QMESSAGINGGLOBAL_H
#define QMESSAGINGGLOBAL_H

#include <qmobilityglobal.h>

// A variant of Q_GLOBAL_STATIC for use in class scope
#define Q_SCOPED_STATIC_DECLARE(TYPE, NAME)                      \
    static TYPE *NAME();

#if defined(QT_NO_THREAD)
#  define Q_SCOPED_STATIC_DEFINE(TYPE, SCOPE, NAME)              \
    TYPE *SCOPE::NAME()                                          \
    {                                                            \
        static TYPE this_##NAME;                                 \
        static QGlobalStatic<TYPE > global_##NAME(&this_##NAME); \
        return global_##NAME.pointer;                            \
    }
#  else
#  define Q_SCOPED_STATIC_DEFINE(TYPE, SCOPE, NAME)                     \
    Q_GLOBAL_STATIC_INIT(TYPE, NAME);                                   \
    TYPE *SCOPE::NAME()                                                 \
    {                                                                   \
        if (!this_##NAME.pointer && !this_##NAME.destroyed) {           \
            TYPE *x = new TYPE;                                         \
            if (!this_##NAME.pointer.testAndSetOrdered(0, x))           \
                delete x;                                               \
            else                                                        \
                static QGlobalStaticDeleter<TYPE > cleanup(this_##NAME); \
        }                                                               \
        return this_##NAME.pointer;                                     \
    }
#endif

#endif // QMESSAGINGGLOBAL_H