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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDBus module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** 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
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qdbus_symbols_p.h"
#include <QtCore/qglobal.h>
#include <QtCore/qlibrary.h>
#include <QtCore/qmutex.h>
#include <private/qmutexpool_p.h>
QT_BEGIN_NAMESPACE
void *qdbus_resolve_me(const char *name);
#if !defined QT_LINKED_LIBDBUS
static QLibrary *qdbus_libdbus = 0;
static void qdbus_unloadLibDBus()
{
delete qdbus_libdbus;
qdbus_libdbus = 0;
}
bool qdbus_loadLibDBus()
{
static volatile bool triedToLoadLibrary = false;
#ifndef QT_NO_THREAD
QMutexLocker locker(QMutexPool::globalInstanceGet((void *)&qdbus_resolve_me));
#endif
QLibrary *&lib = qdbus_libdbus;
if (triedToLoadLibrary)
return lib && lib->isLoaded();
lib = new QLibrary;
triedToLoadLibrary = true;
static int majorversions[] = { 3, 2, -1 };
lib->unload();
lib->setFileName(QLatin1String("dbus-1"));
for (uint i = 0; i < sizeof(majorversions) / sizeof(majorversions[0]); ++i) {
lib->setFileNameAndVersion(lib->fileName(), majorversions[i]);
if (lib->load() && lib->resolve("dbus_connection_open_private")) {
struct Unloader { ~Unloader() { qdbus_unloadLibDBus(); } };
static Unloader unloader;
return true;
}
lib->unload();
}
delete lib;
lib = 0;
return false;
}
void *qdbus_resolve_conditionally(const char *name)
{
if (qdbus_loadLibDBus())
return qdbus_libdbus->resolve(name);
return 0;
}
void *qdbus_resolve_me(const char *name)
{
void *ptr = 0;
if (!qdbus_loadLibDBus())
qFatal("Cannot find libdbus-1 in your system to resolve symbol '%s'.", name);
ptr = qdbus_libdbus->resolve(name);
if (!ptr)
qFatal("Cannot resolve '%s' in your libdbus-1.", name);
return ptr;
}
QT_END_NAMESPACE
#endif
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