5635823e17
As in the past, to avoid rewriting various autotests that contain line-number information, an extra blank line has been inserted at the end of the license text to ensure that this commit does not change the total number of lines in the license header. Change-Id: I311e001373776812699d6efc045b5f742890c689 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
124 lines
3.5 KiB
C++
124 lines
3.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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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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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** 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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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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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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#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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#ifndef QT_NO_DBUS
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QT_BEGIN_NAMESPACE
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void (*qdbus_resolve_me(const char *name))();
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#if !defined QT_LINKED_LIBDBUS
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static QLibrary *qdbus_libdbus = 0;
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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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bool qdbus_loadLibDBus()
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{
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#ifdef QT_BUILD_INTERNAL
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// this is to simulate a library load failure for our autotest suite.
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if (!qgetenv("QT_SIMULATE_DBUS_LIBFAIL").isEmpty())
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return false;
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#endif
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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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lib = new QLibrary;
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triedToLoadLibrary = true;
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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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lib->unload();
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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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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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void (*qdbus_resolve_me(const char *name))()
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{
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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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QFunctionPointer 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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return ptr;
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}
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Q_DESTRUCTOR_FUNCTION(qdbus_unloadLibDBus)
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#endif // QT_LINKED_LIBDBUS
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QT_END_NAMESPACE
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#endif // QT_NO_DBUS
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