C++ QBasicAtomicInt::fetchAndAddRelaxed方法代码示例

QGLTextureGlyphCache::QGLTextureGlyphCache(const QGLContext *context, QFontEngineGlyphCache::Type type, const QTransform &matrix)
    : QImageTextureGlyphCache(type, matrix), QGLContextGroupResourceBase()
    , ctx(0)
    , pex(0)
    , m_blitProgram(0)
    , m_filterMode(Nearest)
    , m_serialNumber(qgltextureglyphcache_serial_number.fetchAndAddRelaxed(1))
{
#ifdef QT_GL_TEXTURE_GLYPH_CACHE_DEBUG
    qDebug(" -> QGLTextureGlyphCache() %p for context %p.", this, ctx);
#endif
    setContext(context);

    m_vertexCoordinateArray[0] = -1.0f;
    m_vertexCoordinateArray[1] = -1.0f;
    m_vertexCoordinateArray[2] =  1.0f;
    m_vertexCoordinateArray[3] = -1.0f;
    m_vertexCoordinateArray[4] =  1.0f;
    m_vertexCoordinateArray[5] =  1.0f;
    m_vertexCoordinateArray[6] = -1.0f;
    m_vertexCoordinateArray[7] =  1.0f;

    m_textureCoordinateArray[0] = 0.0f;
    m_textureCoordinateArray[1] = 0.0f;
    m_textureCoordinateArray[2] = 1.0f;
    m_textureCoordinateArray[3] = 0.0f;
    m_textureCoordinateArray[4] = 1.0f;
    m_textureCoordinateArray[5] = 1.0f;
    m_textureCoordinateArray[6] = 0.0f;
    m_textureCoordinateArray[7] = 1.0f;
}

/*!
    Looks up the IP address(es) associated with host name \a name, and
    returns an ID for the lookup. When the result of the lookup is
    ready, the slot or signal \a member in \a receiver is called with
    a QHostInfo argument. The QHostInfo object can then be inspected
    to get the results of the lookup.

    The lookup is performed by a single function call, for example:

    \snippet code/src_network_kernel_qhostinfo.cpp 2

    The implementation of the slot prints basic information about the
    addresses returned by the lookup, or reports an error if it failed:

    \snippet code/src_network_kernel_qhostinfo.cpp 3

    If you pass a literal IP address to \a name instead of a host name,
    QHostInfo will search for the domain name for the IP (i.e., QHostInfo will
    perform a \e reverse lookup). On success, the resulting QHostInfo will
    contain both the resolved domain name and IP addresses for the host
    name. Example:

    \snippet code/src_network_kernel_qhostinfo.cpp 4

    \note There is no guarantee on the order the signals will be emitted
    if you start multiple requests with lookupHost().

    \sa abortHostLookup(), addresses(), error(), fromName()
*/
int QHostInfo::lookupHost(const QString &name, QObject *receiver,
                          const char *member)
{
#if defined QHOSTINFO_DEBUG
    qDebug("QHostInfo::lookupHost(\"%s\", %p, %s)",
           name.toLatin1().constData(), receiver, member ? member + 1 : 0);
#endif

    if (!QAbstractEventDispatcher::instance(QThread::currentThread())) {
        qWarning("QHostInfo::lookupHost() called with no event dispatcher");
        return -1;
    }

    qRegisterMetaType<QHostInfo>();

    int id = theIdCounter.fetchAndAddRelaxed(1); // generate unique ID

    if (name.isEmpty()) {
        if (!receiver)
            return -1;

        QHostInfo hostInfo(id);
        hostInfo.setError(QHostInfo::HostNotFound);
        hostInfo.setErrorString(QCoreApplication::translate("QHostInfo", "No host name given"));
        QScopedPointer<QHostInfoResult> result(new QHostInfoResult);
        QObject::connect(result.data(), SIGNAL(resultsReady(QHostInfo)),
                         receiver, member, Qt::QueuedConnection);
        result.data()->emitResultsReady(hostInfo);
        return id;
    }

    QHostInfoLookupManager *manager = theHostInfoLookupManager();

    if (manager) {
        // the application is still alive
        if (manager->cache.isEnabled()) {
            // check cache first
            bool valid = false;
            QHostInfo info = manager->cache.get(name, &valid);
            if (valid) {
                if (!receiver)
                    return -1;

                info.setLookupId(id);
                QHostInfoResult result;
                QObject::connect(&result, SIGNAL(resultsReady(QHostInfo)), receiver, member, Qt::QueuedConnection);
                result.emitResultsReady(info);
                return id;
            }
        }

        // cache is not enabled or it was not in the cache, do normal lookup
        QHostInfoRunnable* runnable = new QHostInfoRunnable(name, id);
        if (receiver)
            QObject::connect(&runnable->resultEmitter, SIGNAL(resultsReady(QHostInfo)), receiver, member, Qt::QueuedConnection);
        manager->scheduleLookup(runnable);
    }
    return id;
}

QThreadStorageData::QThreadStorageData(void (*func)(void *))
    : id(idCounter.fetchAndAddRelaxed(-1))
{
    QMutexLocker locker(mutex());
    destructors()->insert(id, func);

    DEBUG_MSG("QThreadStorageData: Allocated id %d, destructor %p", id, func);
}

EGLNativeWindowType QEglFSEmulatorIntegration::createNativeWindow(QPlatformWindow *platformWindow,
                                                                  const QSize &size,
                                                                  const QSurfaceFormat &format)
{
    Q_UNUSED(size);
    Q_UNUSED(format);
    QEglFSEmulatorScreen *screen = static_cast<QEglFSEmulatorScreen *>(platformWindow->screen());
    if (screen && setDisplay) {
        // Let the emulator know which screen the window surface is attached to
        setDisplay(screen->id());
    }
    static QBasicAtomicInt uniqueWindowId = Q_BASIC_ATOMIC_INITIALIZER(0);
    return EGLNativeWindowType(qintptr(1 + uniqueWindowId.fetchAndAddRelaxed(1)));
}

/*!
    Looks up the IP address(es) associated with host name \a name, and
    returns an ID for the lookup. When the result of the lookup is
    ready, the slot or signal \a member in \a receiver is called with
    a QHostInfo argument. The QHostInfo object can then be inspected
    to get the results of the lookup.

    The lookup is performed by a single function call, for example:

    \snippet doc/src/snippets/code/src_network_kernel_qhostinfo.cpp 2

    The implementation of the slot prints basic information about the
    addresses returned by the lookup, or reports an error if it failed:

    \snippet doc/src/snippets/code/src_network_kernel_qhostinfo.cpp 3

    If you pass a literal IP address to \a name instead of a host name,
    QHostInfo will search for the domain name for the IP (i.e., QHostInfo will
    perform a \e reverse lookup). On success, the resulting QHostInfo will
    contain both the resolved domain name and IP addresses for the host
    name. Example:

    \snippet doc/src/snippets/code/src_network_kernel_qhostinfo.cpp 4

    \sa abortHostLookup(), addresses(), error(), fromName()
*/
int QHostInfo::lookupHost(const QString &name, QObject *receiver,
                          const char *member)
{
#if defined QHOSTINFO_DEBUG
    qDebug("QHostInfo::lookupHost(\"%s\", %p, %s)",
           name.toLatin1().constData(), receiver, member ? member + 1 : 0);
#endif
    if (!QAbstractEventDispatcher::instance(QThread::currentThread())) {
        qWarning("QHostInfo::lookupHost() called with no event dispatcher");
        return -1;
    }

    qRegisterMetaType<QHostInfo>("QHostInfo");

#if defined(Q_OS_WIN32) || defined(Q_OS_WINCE)
    QWindowsSockInit bust; // makes sure WSAStartup was callled
#endif

    QScopedPointer<QHostInfoResult> result(new QHostInfoResult);
    result.data()->autoDelete = false;
    QObject::connect(result.data(), SIGNAL(resultsReady(QHostInfo)),
                     receiver, member);
    int id = result.data()->lookupId = theIdCounter.fetchAndAddRelaxed(1);

    if (name.isEmpty()) {
        QHostInfo info(id);
        info.setError(QHostInfo::HostNotFound);
        info.setErrorString(QObject::tr("No host name given"));
        QMetaObject::invokeMethod(result.data(), "emitResultsReady", Qt::QueuedConnection,
                                  Q_ARG(QHostInfo, info));
        result.take()->autoDelete = true;
        return id;
    }

    QHostInfoAgent *agent = theAgent();
    agent->addHostName(name, result.take());

#if !defined QT_NO_THREAD
    if (!agent->isRunning())
        agent->start();
#else
//    if (!agent->isRunning())
	agent->run();
//    else
//	agent->wakeOne();
#endif
    return id;
}

/*!
    Looks up the IP address(es) associated with host name \a name, and
    returns an ID for the lookup. When the result of the lookup is
    ready, the slot or signal \a member in \a receiver is called with
    a QHostInfo argument. The QHostInfo object can then be inspected
    to get the results of the lookup.

    The lookup is performed by a single function call, for example:

    \snippet doc/src/snippets/code/src_network_kernel_qhostinfo.cpp 2

    The implementation of the slot prints basic information about the
    addresses returned by the lookup, or reports an error if it failed:

    \snippet doc/src/snippets/code/src_network_kernel_qhostinfo.cpp 3

    If you pass a literal IP address to \a name instead of a host name,
    QHostInfo will search for the domain name for the IP (i.e., QHostInfo will
    perform a \e reverse lookup). On success, the resulting QHostInfo will
    contain both the resolved domain name and IP addresses for the host
    name. Example:

    \snippet doc/src/snippets/code/src_network_kernel_qhostinfo.cpp 4

    \note There is no guarantee on the order the signals will be emitted
    if you start multiple requests with lookupHost().

    \sa abortHostLookup(), addresses(), error(), fromName()
*/
int QHostInfo::lookupHost(const QString &name, QObject *receiver,
                          const char *member)
{
#if defined QHOSTINFO_DEBUG
    qDebug("QHostInfo::lookupHost(\"%s\", %p, %s)",
           name.toLatin1().constData(), receiver, member ? member + 1 : 0);
#endif
    if (!QAbstractEventDispatcher::instance(QThread::currentThread())) {
        qWarning("QHostInfo::lookupHost() called with no event dispatcher");
        return -1;
    }

    qRegisterMetaType<QHostInfo>("QHostInfo");

    int id = theIdCounter.fetchAndAddRelaxed(1); // generate unique ID

    if (name.isEmpty()) {
        QHostInfo hostInfo(id);
        hostInfo.setError(QHostInfo::HostNotFound);
        hostInfo.setErrorString(QObject::tr("No host name given"));
        QScopedPointer<QHostInfoResult> result(new QHostInfoResult);
        QObject::connect(result.data(), SIGNAL(resultsReady(QHostInfo)),
                         receiver, member, Qt::QueuedConnection);
        result.data()->emitResultsReady(hostInfo);
        return id;
    }

#ifdef QT_NO_THREAD
    QHostInfo hostInfo = QHostInfoAgent::fromName(name);
    hostInfo.setLookupId(id);
    QScopedPointer<QHostInfoResult> result(new QHostInfoResult);
    QObject::connect(result.data(), SIGNAL(resultsReady(QHostInfo)),
                     receiver, member, Qt::QueuedConnection);
    result.data()->emitResultsReady(hostInfo);
#else
    QHostInfoRunnable* runnable = new QHostInfoRunnable(name, id);
    QObject::connect(&runnable->resultEmitter, SIGNAL(resultsReady(QHostInfo)), receiver, member, Qt::QueuedConnection);
    theHostInfoLookupManager()->scheduleLookup(runnable);
#endif

    return id;
}

/*!
    Looks up the IP address(es) associated with host name \a name, and
    returns an ID for the lookup. When the result of the lookup is
    ready, the slot or signal \a member in \a receiver is called with
    a QHostInfo argument. The QHostInfo object can then be inspected
    to get the results of the lookup.

    The lookup is performed by a single function call, for example:

    \snippet doc/src/snippets/code/src.network.kernel.qhostinfo.cpp 2

    The implementation of the slot prints basic information about the
    addresses returned by the lookup, or reports an error if it failed:

    \snippet doc/src/snippets/code/src.network.kernel.qhostinfo.cpp 3

    If you pass a literal IP address to \a name instead of a host name,
    QHostInfo will search for the domain name for the IP (i.e., QHostInfo will
    perform a \e reverse lookup). On success, the resulting QHostInfo will
    contain both the resolved domain name and IP addresses for the host
    name. Example:

    \snippet doc/src/snippets/code/src.network.kernel.qhostinfo.cpp 4

    \sa abortHostLookup(), addresses(), error(), fromName()
*/
int QHostInfo::lookupHost(const QString &name, QObject *receiver,
                          const char *member)
{
#if defined QHOSTINFO_DEBUG
    qDebug("QHostInfo::lookupHost(\"%s\", %p, %s)",
           name.toLatin1().constData(), receiver, member ? member + 1 : 0);
#endif
    if (!QAbstractEventDispatcher::instance(QThread::currentThread())) {
        qWarning("QHostInfo::lookupHost() called with no event dispatcher");
        return -1;
    }

    qRegisterMetaType<QHostInfo>("QHostInfo");

#if defined(Q_OS_WIN32) || defined(Q_OS_WINCE)
    QWindowsSockInit bust; // makes sure WSAStartup was callled
#endif

    // Support for IDNA by first splitting the name into labels, then
    // running the punycode decoder on each part, then merging
    // together before passing the name to the lookup agent.
    QString lookup = QString::fromLatin1(QUrl::toAce(name));

    QHostInfoAgent *agent = theAgent();

    QHostInfoResult *result = new QHostInfoResult;
    QObject::connect(result, SIGNAL(resultsReady(QHostInfo)),
                     receiver, member);
    int id = result->lookupId = theIdCounter.fetchAndAddRelaxed(1);
    agent->addHostName(lookup, result);

#if !defined QT_NO_THREAD
    if (!agent->isRunning())
        agent->start();
#else
//    if (!agent->isRunning())
	agent->run();
//    else
//	agent->wakeOne();
#endif
    return id;
}

/*!
    Looks up the IP address(es) associated with host name \a name, and
    returns an ID for the lookup. When the result of the lookup is
    ready, the slot or signal \a member in \a receiver is called with
    a QHostInfo argument. The QHostInfo object can then be inspected
    to get the results of the lookup.

    The lookup is performed by a single function call, for example:

    \snippet doc/src/snippets/code/src_network_kernel_qhostinfo.cpp 2

    The implementation of the slot prints basic information about the
    addresses returned by the lookup, or reports an error if it failed:

    \snippet doc/src/snippets/code/src_network_kernel_qhostinfo.cpp 3

    If you pass a literal IP address to \a name instead of a host name,
    QHostInfo will search for the domain name for the IP (i.e., QHostInfo will
    perform a \e reverse lookup). On success, the resulting QHostInfo will
    contain both the resolved domain name and IP addresses for the host
    name. Example:

    \snippet doc/src/snippets/code/src_network_kernel_qhostinfo.cpp 4

    \note There is no guarantee on the order the signals will be emitted
    if you start multiple requests with lookupHost().

    \sa abortHostLookup(), addresses(), error(), fromName()
*/
int QHostInfo::lookupHost(const QString &name, QObject *receiver,
                          const char *member)
{
#if defined QHOSTINFO_DEBUG
    qDebug("QHostInfo::lookupHost(\"%s\", %p, %s)",
           name.toLatin1().constData(), receiver, member ? member + 1 : 0);
#endif

    if (!QAbstractEventDispatcher::instance(QThread::currentThread())) {
        qWarning("QHostInfo::lookupHost() called with no event dispatcher");
        return -1;
    }

    qRegisterMetaType<QHostInfo>("QHostInfo");

    int id = theIdCounter.fetchAndAddRelaxed(1); // generate unique ID

    if (name.isEmpty()) {
        QHostInfo hostInfo(id);
        hostInfo.setError(QHostInfo::HostNotFound);
        hostInfo.setErrorString(QCoreApplication::translate("QHostInfo", "No host name given"));
        QScopedPointer<QHostInfoResult> result(new QHostInfoResult);
        QObject::connect(result.data(), SIGNAL(resultsReady(QHostInfo)),
                         receiver, member, Qt::QueuedConnection);
        result.data()->emitResultsReady(hostInfo);
        return id;
    }

#ifndef Q_OS_SYMBIAN
    QHostInfoLookupManager *manager = theHostInfoLookupManager();

    if (manager) {
        // the application is still alive
        if (manager->cache.isEnabled()) {
            // check cache first
            bool valid = false;
            QHostInfo info = manager->cache.get(name, &valid);
            if (valid) {
                info.setLookupId(id);
                QHostInfoResult result;
                QObject::connect(&result, SIGNAL(resultsReady(QHostInfo)), receiver, member, Qt::QueuedConnection);
                result.emitResultsReady(info);
                return id;
            }
        }

        // cache is not enabled or it was not in the cache, do normal lookup
        QHostInfoRunnable* runnable = new QHostInfoRunnable(name, id);
        QObject::connect(&runnable->resultEmitter, SIGNAL(resultsReady(QHostInfo)), receiver, member, Qt::QueuedConnection);
        manager->scheduleLookup(runnable);
    }
#else
    QSymbianHostInfoLookupManager *manager = theHostInfoLookupManager();

    if (manager) {
        // the application is still alive
        if (manager->cache.isEnabled()) {
            // check cache first
            bool valid = false;
            QHostInfo info = manager->cache.get(name, &valid);
            if (valid) {
                info.setLookupId(id);
                QHostInfoResult result;
                QObject::connect(&result, SIGNAL(resultsReady(QHostInfo)), receiver, member, Qt::QueuedConnection);
                result.emitResultsReady(info);
                return id;
            }
        }

        // cache is not enabled or it was not in the cache, do normal lookup
#ifndef QT_NO_BEARERMANAGEMENT
//.........这里部分代码省略.........

 ~Second()
 {
     order = cleanupOrder.fetchAndAddRelaxed(1);
 }

 ThrowingType(QBasicAtomicInt &throwControl)
 {
     constructedCount.ref();
     if (throwControl.fetchAndAddRelaxed(-1) != 0)
         throw 0;
 }