source: trunk/doc/src/frameworks-technologies/ipc.qdoc@ 624

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/*!
    \page ipc.html
    \title Inter-Process Communication in Qt
    \brief Inter-Process communication in Qt applications.

    \ingroup frameworks-technologies

    Qt provides several ways to implement Inter-Process Communication
    (IPC) in Qt applications.

    \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., QNetworkAccessManager, 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 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 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.
*/