/**************************************************************************** | |
** | |
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). | |
** All rights reserved. | |
** Contact: Nokia Corporation (qt-info@nokia.com) | |
** | |
** This file is part of the QtDBus module of the Qt Toolkit. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
** 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 1.1, 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. | |
** | |
** Other Usage | |
** Alternatively, this file may be used in accordance with the terms and | |
** conditions contained in a signed written agreement between you and Nokia. | |
** | |
** | |
** | |
** | |
** | |
** $QT_END_LICENSE$ | |
** | |
****************************************************************************/ | |
#include <QtCore/qglobal.h> | |
#include <QtCore/qlibrary.h> | |
#include <QtCore/qmutex.h> | |
#include <private/qmutexpool_p.h> | |
#ifndef QT_NO_DBUS | |
QT_BEGIN_NAMESPACE | |
void *qdbus_resolve_me(const char *name); | |
#if !defined QT_LINKED_LIBDBUS | |
static QLibrary *qdbus_libdbus = 0; | |
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")) | |
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; | |
} | |
Q_DESTRUCTOR_FUNCTION(qdbus_unloadLibDBus) | |
#endif // QT_LINKED_LIBDBUS | |
QT_END_NAMESPACE | |
#endif // QT_NO_DBUS |