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author | Lars Knoll <lars.knoll@nokia.com> | 2009-03-23 09:18:55 (GMT) |
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committer | Simon Hausmann <simon.hausmann@nokia.com> | 2009-03-23 09:18:55 (GMT) |
commit | e5fcad302d86d316390c6b0f62759a067313e8a9 (patch) | |
tree | c2afbf6f1066b6ce261f14341cf6d310e5595bc1 /doc/src/ipc.qdoc | |
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Long live Qt 4.5!
Diffstat (limited to 'doc/src/ipc.qdoc')
-rw-r--r-- | doc/src/ipc.qdoc | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/doc/src/ipc.qdoc b/doc/src/ipc.qdoc new file mode 100644 index 0000000..97ed22e --- /dev/null +++ b/doc/src/ipc.qdoc @@ -0,0 +1,91 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the documentation 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 qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +/*! + \group ipc + \title Inter-Process Communication in Qt + \ingroup groups + \ingroup architecture + \brief Inter-Process communication in Qt applications. + + Qt provides several ways to implement Inter-Process Communication + (IPC) in Qt applications. + + \section1 D-Bus + + The \l{QtDBus} module is a Unix-only library + you can use to implement IPC using the D-Bus protocol. It extends + Qt's \l{signalsandslots.html} {Signals and Slots} mechanism to the + IPC level, allowing a signal emitted by one process to be + connected to a slot in another process. This \l {Introduction to + D-Bus} page has detailed information on how to use the \l{QtDBus} + module. + + \section1 TCP/IP + + The cross-platform \l{QtNetwork} module + provides classes that make network programming portable and + easy. It offers high-level classes (e.g., QHttp, QFtp) that + communicate using specific application-level protocols, and + lower-level classes (e.g., QTcpSocket, QTcpServer, QSslSocket) for + implementing protocols. + + \section1 Shared Memory + + The cross-platform shared memory class, QSharedMemory, provides + access to the operating system's shared memory implementation. + It allows safe access to shared memory segments by multiple threads + and processes. Additionally, QSystemSemaphore can be used to control + access to resources shared by the system, as well as to communicate + between processes. + + \section1 Qt COmmunications Protocol (QCOP) + + The QCopChannel class implements a protocol for transferring messages + between client processes across named channels. QCopChannel is + only available in \l{Qt for Embedded Linux}. Like the \l{QtDBus} + module, QCOP extends Qt's \l{Signals and Slots} mechanism to the + IPC level, allowing a signal emitted by one process to be + connected to a slot in another process, but unlike QtDBus, QCOP + does not depend on a third party library. + +*/ + |