source: trunk/src/corelib/thread/qwaitcondition.qdoc

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/*!
    \class QWaitCondition
    \brief The QWaitCondition class provides a condition variable for
    synchronizing threads.

    \threadsafe

    \ingroup thread

    QWaitCondition allows a thread to tell other threads that some
    sort of condition has been met. One or many threads can block
    waiting for a QWaitCondition to set a condition with wakeOne() or
    wakeAll(). Use wakeOne() to wake one randomly selected condition or
    wakeAll() to wake them all.

    For example, let's suppose that we have three tasks that should
    be performed whenever the user presses a key. Each task could be
    split into a thread, each of which would have a
    \l{QThread::run()}{run()} body like this:

    \snippet doc/src/snippets/code/src_corelib_thread_qwaitcondition_unix.cpp 0

    Here, the \c keyPressed variable is a global variable of type
    QWaitCondition.