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kdbusconnectionpool.cpp
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1 /*
2  * This file is part of the Nepomuk KDE project.
3  * Copyright (C) 2010 Sebastian Trueg <trueg@kde.org>
4  * Copyright (C) 2010 David Faure <faure@kde.org>
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Library General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Library General Public License for more details.
15  *
16  * You should have received a copy of the GNU Library General Public License
17  * along with this library; see the file COPYING.LIB. If not, write to
18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19  * Boston, MA 02110-1301, USA.
20  */
21 
22 #include "kdbusconnectionpool.h"
23 #include <QThreadStorage>
24 #include <QCoreApplication>
25 #include <QThread>
26 
27 namespace {
28 QAtomicInt s_connectionCounter;
29 
30 class KDBusConnectionPoolPrivate
31 {
32 public:
33  KDBusConnectionPoolPrivate()
34  : m_connection( QDBusConnection::connectToBus(
35  QDBusConnection::SessionBus,
36  QString::fromLatin1("KDBusConnection%1").arg(newNumber()) ) )
37  {
38  }
39 
40  ~KDBusConnectionPoolPrivate()
41  {
42  QDBusConnection::disconnectFromBus( m_connection.name() );
43  }
44 
45  QDBusConnection connection() const
46  {
47  return m_connection;
48  }
49 
50 private:
51  static int newNumber()
52  {
53  return s_connectionCounter.fetchAndAddAcquire(1);
54  }
55 
56  QDBusConnection m_connection;
57 };
58 } // namespace
59 
60 QThreadStorage<KDBusConnectionPoolPrivate *> s_perThreadConnection;
61 
62 QDBusConnection KDBusConnectionPool::threadConnection()
63 {
64  if (QCoreApplication::instance()->thread() == QThread::currentThread()) {
65  return QDBusConnection::sessionBus();
66  }
67  if (!s_perThreadConnection.hasLocalData()) {
68  s_perThreadConnection.setLocalData(new KDBusConnectionPoolPrivate);
69  }
70 
71  return s_perThreadConnection.localData()->connection();
72 }
73 
s_perThreadConnection
QThreadStorage< KDBusConnectionPoolPrivate * > s_perThreadConnection
Definition: kdbusconnectionpool.cpp:60
QString
KDBusConnectionPool::threadConnection
QDBusConnection threadConnection()
The KDBusConnectionPool works around the problem of QDBusConnection not being thread-safe.
Definition: kdbusconnectionpool.cpp:62
kdbusconnectionpool.h
This file is part of the KDE documentation.
Documentation copyright © 1996-2014 The KDE developers.
Generated on Tue Oct 14 2014 22:47:08 by doxygen 1.8.7 written by Dimitri van Heesch, © 1997-2006

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