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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
27namespace {
28QAtomicInt s_connectionCounter;
29
30class KDBusConnectionPoolPrivate
31{
32public:
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
50private:
51 static int newNumber()
52 {
53 return s_connectionCounter.fetchAndAddAcquire(1);
54 }
55
56 QDBusConnection m_connection;
57};
58} // namespace
59
60QThreadStorage<KDBusConnectionPoolPrivate *> s_perThreadConnection;
61
62QDBusConnection 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
QString
s_perThreadConnection
QThreadStorage< KDBusConnectionPoolPrivate * > s_perThreadConnection
Definition: kdbusconnectionpool.cpp:60
kdbusconnectionpool.h
KDBusConnectionPool::threadConnection
QDBusConnection threadConnection()
The KDBusConnectionPool works around the problem of QDBusConnection not being thread-safe.
Definition: kdbusconnectionpool.cpp:62
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