/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtDBus module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include <QtCore/qglobal.h>+
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#include <QtCore/qlibrary.h>+
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#include <QtCore/qmutex.h>+
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#include <private/qmutexpool_p.h>+
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+
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QT_BEGIN_NAMESPACE+
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+
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void *qdbus_resolve_me(const char *name);+
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+
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#if !defined QT_LINKED_LIBDBUS+
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+
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static QLibrary *qdbus_libdbus = 0;+
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+
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void qdbus_unloadLibDBus()+
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{+
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    delete qdbus_libdbus;+
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    qdbus_libdbus = 0;+
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}+
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+
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bool qdbus_loadLibDBus()+
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{+
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    static volatile bool triedToLoadLibrary = false;+
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#ifndef QT_NO_THREAD+
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    QMutexLocker locker(QMutexPool::globalInstanceGet((void *)&qdbus_resolve_me));+
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#endif+
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    QLibrary *&lib = qdbus_libdbus;+
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    if (triedToLoadLibrary)+
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        return lib && lib->isLoaded();+
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+
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    lib = new QLibrary;+
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    triedToLoadLibrary = true;+
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+
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    static int majorversions[] = { 3, 2, -1 };+
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    lib->unload();+
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    lib->setFileName(QLatin1String("dbus-1"));+
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    for (uint i = 0; i < sizeof(majorversions) / sizeof(majorversions[0]); ++i) {+
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        lib->setFileNameAndVersion(lib->fileName(), majorversions[i]);+
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        if (lib->load() && lib->resolve("dbus_connection_open_private"))+
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            return true;+
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+
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        lib->unload();+
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    }+
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+
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    delete lib;+
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    lib = 0;+
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    return false;+
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}+
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+
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void *qdbus_resolve_conditionally(const char *name)+
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{+
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    if (qdbus_loadLibDBus())+
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        return qdbus_libdbus->resolve(name);+
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    return 0;+
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}+
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+
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void *qdbus_resolve_me(const char *name)+
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{+
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    void *ptr = 0;+
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    if (!qdbus_loadLibDBus())+
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        qFatal("Cannot find libdbus-1 in your system to resolve symbol '%s'.", name);+
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+
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    ptr = qdbus_libdbus->resolve(name);+
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    if (!ptr)+
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        qFatal("Cannot resolve '%s' in your libdbus-1.", name);+
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+
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    return ptr;+
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}+
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+
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Q_DESTRUCTOR_FUNCTION(qdbus_unloadLibDBus)+
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+
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QT_END_NAMESPACE+
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+
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#endif+
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