qcoreapplication.cpp

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#include "qcoreapplication.h"
#include "qcoreapplication_p.h"

#include "qabstracteventdispatcher.h"
#include "qcoreevent.h"
#include "qeventloop.h"
#include "qcorecmdlineargs_p.h"
#include <qdatastream.h>
#include <qdebug.h>
#include <qdir.h>
#include <qfile.h>
#include <qfileinfo.h>
#include <qhash.h>
#include <private/qprocess_p.h>
#include <qtextcodec.h>
#include <qthread.h>
#include <qthreadpool.h>
#include <qthreadstorage.h>
#include <private/qthread_p.h>
#include <qelapsedtimer.h>
#include <qlibraryinfo.h>
#include <qvarlengtharray.h>
#include <private/qfactoryloader_p.h>
#include <private/qfunctions_p.h>
#include <private/qlocale_p.h>
#include <private/qmutexpool_p.h>

#ifdef Q_OS_SYMBIAN
#  include <exception>
#  include <f32file.h>
#  include <e32ldr.h>
#  include "qeventdispatcher_symbian_p.h"
#  include "private/qcore_symbian_p.h"
#  include "private/qfilesystemengine_p.h"
#  include <apacmdln.h>
#elif defined(Q_OS_UNIX)
#  if defined(Q_OS_BLACKBERRY)
#    include "qeventdispatcher_blackberry_p.h"
#    include <process.h>
#    include <unistd.h>
#  else
#    if !defined(QT_NO_GLIB)
#      include "qeventdispatcher_glib_p.h"
#    endif
#    include "qeventdispatcher_unix_p.h"
#  endif
#endif

#ifdef Q_OS_WIN
#  include "qeventdispatcher_win_p.h"
#endif

#ifdef Q_OS_MAC
#  include "qcore_mac_p.h"
#endif

#include <stdlib.h>

#ifdef Q_OS_UNIX
#  include <locale.h>
#endif

#ifdef Q_OS_VXWORKS
#  include <taskLib.h>
#endif

#ifdef Q_OS_QNX
#  include <sys/neutrino.h>
#  include <pthread.h>
#  include <sched.h>
#endif

QT_BEGIN_NAMESPACE

class QMutexUnlocker
{
public:
    inline explicit QMutexUnlocker(QMutex *m)
        : mtx(m)
    { }
    inline ~QMutexUnlocker() { unlock(); }
    inline void unlock() { if (mtx) mtx->unlock(); mtx = 0; }

private:
    Q_DISABLE_COPY(QMutexUnlocker)

    QMutex *mtx;
};

#ifdef Q_OS_SYMBIAN
static CApaCommandLine* apaCommandLine = 0;
static char *apaTail = 0;
static QVector<char *> *apaArgv = 0;

static void qt_cleanup_apa_cmd_line()
{
    delete apaCommandLine;
    apaCommandLine = 0;
    delete apaArgv;
    apaArgv = 0;
    delete apaTail;
    apaTail = 0;
}

static inline void qt_init_symbian_apa_arguments(int &argc, char **&argv)
{
    // If app is launched via CApaCommandLine::StartApp(), normal arguments only contain
    // application name.
    if (argc == 1) {
        CApaCommandLine* commandLine = QCoreApplicationPrivate::symbianCommandLine();
        if(commandLine) {
            TPtrC8 apaCmdLine = commandLine->TailEnd();
            int tailLen = apaCmdLine.Length();
            if (tailLen) {
                apaTail = reinterpret_cast<char *>(qMalloc(tailLen + 1));
                qMemCopy(apaTail, reinterpret_cast<const char *>(apaCmdLine.Ptr()), tailLen);
                apaTail[tailLen] = '\0';
                apaArgv = new QVector<char *>(8);
                // Reuse windows command line parsing
                *apaArgv = qWinCmdLine<char>(apaTail, tailLen, argc);
                apaArgv->insert(0, argv[0]);
                argc++;
                argv = apaArgv->data();
            }
        }
    }
}

CApaCommandLine* QCoreApplicationPrivate::symbianCommandLine()
{
    // Getting of Apa command line needs to be static as it can only be called successfully
    // once per process.
    if (!apaCommandLine) {
        TInt err = CApaCommandLine::GetCommandLineFromProcessEnvironment(apaCommandLine);
        if (err == KErrNone) {
            qAddPostRoutine(qt_cleanup_apa_cmd_line);
        }
    }
    return apaCommandLine;
}

#endif

#if defined(Q_WS_WIN) || defined(Q_WS_MAC)
extern QString qAppFileName();
#endif

int QCoreApplicationPrivate::app_compile_version = 0x040000; //we don't know exactly, but it's at least 4.0.0
#if defined(QT3_SUPPORT)
bool QCoreApplicationPrivate::useQt3Support = true;
#endif

#if !defined(Q_OS_WIN)
#ifdef Q_OS_MAC
QString QCoreApplicationPrivate::macMenuBarName()
{
    QString bundleName;
    CFTypeRef string = CFBundleGetValueForInfoDictionaryKey(CFBundleGetMainBundle(), CFSTR("CFBundleName"));
    if (string)
        bundleName = QCFString::toQString(static_cast<CFStringRef>(string));
    return bundleName;
}
#endif
QString QCoreApplicationPrivate::appName() const
{
    QMutexLocker locker(QMutexPool::globalInstanceGet(&applicationName));

    if (applicationName.isNull()) {
#ifdef Q_OS_MAC
        applicationName = macMenuBarName();
#endif
        if (applicationName.isEmpty() && argv[0]) {
            char *p = strrchr(argv[0], '/');
            applicationName = QString::fromLocal8Bit(p ? p + 1 : argv[0]);
        }
    }
    return applicationName;
}
#endif

bool QCoreApplicationPrivate::checkInstance(const char *function)
{
    bool b = (QCoreApplication::self != 0);
    if (!b)
        qWarning("QApplication::%s: Please instantiate the QApplication object first", function);
    return b;
}

Q_GLOBAL_STATIC(QString, qmljs_debug_arguments);

void QCoreApplicationPrivate::processCommandLineArguments()
{
    int j = argc ? 1 : 0;
    for (int i = 1; i < argc; ++i) {
        if (argv[i] && *argv[i] != '-') {
            argv[j++] = argv[i];
            continue;
        }
        QByteArray arg = argv[i];
        if (arg.startsWith("-qmljsdebugger=")) {
            *qmljs_debug_arguments() = QString::fromLocal8Bit(arg.right(arg.length() - 15));
        } else if (arg == "-qmljsdebugger" && i < argc - 1) {
            ++i;
            *qmljs_debug_arguments() = QString::fromLocal8Bit(argv[i]);
        } else {
            argv[j++] = argv[i];
        }
    }

    if (j < argc) {
        argv[j] = 0;
        argc = j;
    }
}

// Support for introspection

QSignalSpyCallbackSet Q_CORE_EXPORT qt_signal_spy_callback_set = { 0, 0, 0, 0 };

void qt_register_signal_spy_callbacks(const QSignalSpyCallbackSet &callback_set)
{
    qt_signal_spy_callback_set = callback_set;
}

extern "C" void Q_CORE_EXPORT qt_startup_hook()
{
}

typedef QList<QtCleanUpFunction> QVFuncList;
Q_GLOBAL_STATIC(QVFuncList, postRList)

void qAddPostRoutine(QtCleanUpFunction p)
{
    QVFuncList *list = postRList();
    if (!list)
        return;
    list->prepend(p);
}

void qRemovePostRoutine(QtCleanUpFunction p)
{
    QVFuncList *list = postRList();
    if (!list)
        return;
    list->removeAll(p);
}

void Q_CORE_EXPORT qt_call_post_routines()
{
    QVFuncList *list = 0;
    QT_TRY {
        list = postRList();
    } QT_CATCH(const std::bad_alloc &) {
        // ignore - if we can't allocate a post routine list,
        // there's a high probability that there's no post
        // routine to be executed :)
    }
    if (!list)
        return;
    while (!list->isEmpty())
        (list->takeFirst())();
}


// app starting up if false
bool QCoreApplicationPrivate::is_app_running = false;
 // app closing down if true
bool QCoreApplicationPrivate::is_app_closing = false;
// initialized in qcoreapplication and in qtextstream autotest when setlocale is called.
Q_CORE_EXPORT bool qt_locale_initialized = false;

#ifdef Q_OS_SYMBIAN
// The global QSettings needs to be cleaned where cleanup stack is available, which is not
// normally the case when global static destructors are run.
// Declare a custom QGlobalStaticDeleter for QSettings to handle that case.
template<>
class QGlobalStaticDeleter<QSettings>
{
public:
    QGlobalStatic<QSettings> &globalStatic;
    QGlobalStaticDeleter(QGlobalStatic<QSettings> &_globalStatic)
        : globalStatic(_globalStatic)
    { }

    inline ~QGlobalStaticDeleter()
    {
        CTrapCleanup *cleanup = CTrapCleanup::New();
        delete globalStatic.pointer;
        delete cleanup;
        globalStatic.pointer = 0;
        globalStatic.destroyed = true;
    }
};
#endif

/*
  Create an instance of Trolltech.conf. This ensures that the settings will not
  be thrown out of QSetting's cache for unused settings.
  */
Q_GLOBAL_STATIC_WITH_ARGS(QSettings, staticTrolltechConf, (QSettings::UserScope, QLatin1String("Trolltech")))

QSettings *QCoreApplicationPrivate::trolltechConf()
{
    return staticTrolltechConf();
}

Q_CORE_EXPORT uint qGlobalPostedEventsCount()
{
    QThreadData *currentThreadData = QThreadData::current();
    return currentThreadData->postEventList.size() - currentThreadData->postEventList.startOffset;
}


void qt_set_current_thread_to_main_thread()
{
    QCoreApplicationPrivate::theMainThread = QThread::currentThread();
}



QCoreApplication *QCoreApplication::self = 0;
QAbstractEventDispatcher *QCoreApplicationPrivate::eventDispatcher = 0;
uint QCoreApplicationPrivate::attribs;

#ifdef Q_OS_UNIX
Qt::HANDLE qt_application_thread_id = 0;
#endif

struct QCoreApplicationData {
    QCoreApplicationData() {
#ifndef QT_NO_LIBRARY
        app_libpaths = 0;
#endif
    }
    ~QCoreApplicationData() {
#ifndef QT_NO_LIBRARY
        delete app_libpaths;
#endif
#ifndef QT_NO_QOBJECT
        // cleanup the QAdoptedThread created for the main() thread
        if (QCoreApplicationPrivate::theMainThread) {
            QThreadData *data = QThreadData::get2(QCoreApplicationPrivate::theMainThread);
            data->deref(); // deletes the data and the adopted thread
        }
#endif
    }

#ifdef Q_OS_BLACKBERRY
    //The QCoreApplicationData struct is only populated on demand, because it is rarely needed and would
    //affect startup time
    void loadManifest() {
        static bool manifestLoadAttempt = false;
        if (manifestLoadAttempt)
            return;

        manifestLoadAttempt = true;

        QFile metafile(QLatin1String("app/META-INF/MANIFEST.MF"));
        if (!metafile.open(QIODevice::ReadOnly)) {
            qWarning() << Q_FUNC_INFO << "Could not open application metafile for reading";
        } else {
            while (!metafile.atEnd() && (application.isEmpty() || applicationVersion.isEmpty() || orgName.isEmpty())) {
                QByteArray line = metafile.readLine();
                if (line.startsWith("Application-Name:"))
                    application = QString::fromUtf8(line.mid(18).trimmed());
                else if (line.startsWith("Application-Version:"))
                    applicationVersion = QString::fromUtf8(line.mid(21).trimmed());
                else if (line.startsWith("Package-Author:"))
                    orgName = QString::fromUtf8(line.mid(16).trimmed());
            }
            metafile.close();
        }
    }
#endif

    QString orgName, orgDomain, application;
    QString applicationVersion;

#ifndef QT_NO_LIBRARY
    QStringList *app_libpaths;
#endif

};

Q_GLOBAL_STATIC(QCoreApplicationData, coreappdata)

QCoreApplicationPrivate::QCoreApplicationPrivate(int &aargc, char **aargv, uint flags)
    : QObjectPrivate(), argc(aargc), argv(aargv), application_type(0), eventFilter(0),
      in_exec(false), aboutToQuitEmitted(false)
{
    app_compile_version = flags & 0xffffff;
#if defined(QT3_SUPPORT)
    useQt3Support = !(flags & 0x01000000);
#endif
    static const char *const empty = "";
    if (argc == 0 || argv == 0) {
        argc = 0;
        argv = (char **)&empty; // ouch! careful with QCoreApplication::argv()!
    }
    QCoreApplicationPrivate::is_app_closing = false;

#ifdef Q_OS_SYMBIAN
    qt_init_symbian_apa_arguments(argc, argv);
#endif

#ifdef Q_OS_UNIX
    qt_application_thread_id = QThread::currentThreadId();
#endif

#ifdef Q_OS_QNX
    // make the kernel attempt to emulate an instruction with a misaligned access
    // if the attempt fails, it faults with a SIGBUS
    int tv = -1;
    ThreadCtl(_NTO_TCTL_ALIGN_FAULT, &tv);

    // without Round Robin drawn intensive apps will hog the cpu
    // and make the system appear frozen
    int sched_policy;
    sched_param param;
    if (pthread_getschedparam(0, &sched_policy, &param) == 0 && sched_policy != SCHED_RR) {
        sched_policy = SCHED_RR;
        pthread_setschedparam(0, sched_policy, &param);
    }
#endif

    // note: this call to QThread::currentThread() may end up setting theMainThread!
    if (QThread::currentThread() != theMainThread)
        qWarning("WARNING: QApplication was not created in the main() thread.");
}

QCoreApplicationPrivate::~QCoreApplicationPrivate()
{
    if (threadData) {
#ifndef QT_NO_THREAD
        void *data = &threadData->tls;
        QThreadStorageData::finish((void **)data);
#endif

        // need to clear the state of the mainData, just in case a new QCoreApplication comes along.
        QMutexLocker locker(&threadData->postEventList.mutex);
        for (int i = 0; i < threadData->postEventList.size(); ++i) {
            const QPostEvent &pe = threadData->postEventList.at(i);
            if (pe.event) {
                --pe.receiver->d_func()->postedEvents;
                pe.event->posted = false;
                delete pe.event;
            }
        }
        threadData->postEventList.clear();
        threadData->postEventList.recursion = 0;
        threadData->quitNow = false;
    }
}

void QCoreApplicationPrivate::createEventDispatcher()
{
    Q_Q(QCoreApplication);
#if defined(Q_OS_SYMBIAN)
    eventDispatcher = new QEventDispatcherSymbian(q);
#elif defined(Q_OS_UNIX)
#  if defined(Q_OS_BLACKBERRY)
    eventDispatcher = new QEventDispatcherBlackberry(q);
#  else
#  if !defined(QT_NO_GLIB)
    if (qgetenv("QT_NO_GLIB").isEmpty() && QEventDispatcherGlib::versionSupported())
        eventDispatcher = new QEventDispatcherGlib(q);
    else
#  endif
        eventDispatcher = new QEventDispatcherUNIX(q);
#  endif
#elif defined(Q_OS_WIN)
    eventDispatcher = new QEventDispatcherWin32(q);
#else
#  error "QEventDispatcher not yet ported to this platform"
#endif
}

QThread *QCoreApplicationPrivate::theMainThread = 0;
QThread *QCoreApplicationPrivate::mainThread()
{
    Q_ASSERT(theMainThread != 0);
    return theMainThread;
}

#if !defined (QT_NO_DEBUG) || defined (QT_MAC_FRAMEWORK_BUILD)
void QCoreApplicationPrivate::checkReceiverThread(QObject *receiver)
{
    QThread *currentThread = QThread::currentThread();
    QThread *thr = receiver->thread();
    Q_ASSERT_X(currentThread == thr || !thr,
               "QCoreApplication::sendEvent",
               QString::fromLatin1("Cannot send events to objects owned by a different thread. "
                                   "Current thread %1. Receiver '%2' (of type '%3') was created in thread %4")
               .arg(QString::number((quintptr) currentThread, 16))
               .arg(receiver->objectName())
               .arg(QLatin1String(receiver->metaObject()->className()))
               .arg(QString::number((quintptr) thr, 16))
               .toLocal8Bit().data());
    Q_UNUSED(currentThread);
    Q_UNUSED(thr);
}
#elif defined(Q_OS_SYMBIAN) && defined (QT_NO_DEBUG)
// no implementation in release builds, but keep the symbol present
void QCoreApplicationPrivate::checkReceiverThread(QObject * /* receiver */)
{
}
#endif

void QCoreApplicationPrivate::appendApplicationPathToLibraryPaths()
{
#if !defined(QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
    QStringList *app_libpaths = coreappdata()->app_libpaths;
    Q_ASSERT(app_libpaths);
# if defined(Q_OS_SYMBIAN)
    QString app_location( QCoreApplication::applicationDirPath() );
    // File existence check for application's private dir requires additional '\' or
    // platform security will not allow it.
    if (app_location !=  QLibraryInfo::location(QLibraryInfo::PluginsPath) && QFile::exists(app_location + QLatin1Char('\\')) && !app_libpaths->contains(app_location))
# else
    QString app_location( QCoreApplication::applicationFilePath() );
    app_location.truncate(app_location.lastIndexOf(QLatin1Char('/')));
    app_location = QDir(app_location).canonicalPath();
    if (QFile::exists(app_location) && !app_libpaths->contains(app_location))
# endif
        app_libpaths->append(app_location);
#endif
}

QString QCoreApplicationPrivate::qmljsDebugArguments()
{
    return *qmljs_debug_arguments();
}

QString qAppName()
{
    if (!QCoreApplicationPrivate::checkInstance("qAppName"))
        return QString();
    return QCoreApplication::instance()->d_func()->appName();
}

QCoreApplication::QCoreApplication(QCoreApplicationPrivate &p)
    : QObject(p, 0)
{
    init();
    // note: it is the subclasses' job to call
    // QCoreApplicationPrivate::eventDispatcher->startingUp();
}

void QCoreApplication::flush()
{
    if (self && self->d_func()->eventDispatcher)
        self->d_func()->eventDispatcher->flush();
}

QCoreApplication::QCoreApplication(int &argc, char **argv)
    : QObject(*new QCoreApplicationPrivate(argc, argv, 0x040000))
{
    init();
    QCoreApplicationPrivate::eventDispatcher->startingUp();
#if defined(Q_OS_SYMBIAN) && !defined(QT_NO_LIBRARY)
    // Refresh factoryloader, as text codecs are requested during lib path
    // resolving process and won't be therefore properly loaded.
    // Unknown if this is symbian specific issue.
    QFactoryLoader::refreshAll();
#endif

#if defined(Q_OS_SYMBIAN) && !defined(QT_NO_SYSTEMLOCALE)
    d_func()->symbianInit();
#endif
}

QCoreApplication::QCoreApplication(int &argc, char **argv, int _internal)
: QObject(*new QCoreApplicationPrivate(argc, argv, _internal))
{
    init();
    QCoreApplicationPrivate::eventDispatcher->startingUp();
#if defined(Q_OS_SYMBIAN)
#ifndef QT_NO_LIBRARY
    // Refresh factoryloader, as text codecs are requested during lib path
    // resolving process and won't be therefore properly loaded.
    // Unknown if this is symbian specific issue.
    QFactoryLoader::refreshAll();
#endif
#ifndef QT_NO_SYSTEMLOCALE
    d_func()->symbianInit();
#endif
#endif //Q_OS_SYMBIAN
}


// ### move to QCoreApplicationPrivate constructor?
void QCoreApplication::init()
{
    Q_D(QCoreApplication);

#ifdef Q_OS_UNIX
    setlocale(LC_ALL, "");                // use correct char set mapping
    qt_locale_initialized = true;
#endif

    Q_ASSERT_X(!self, "QCoreApplication", "there should be only one application object");
    QCoreApplication::self = this;

#ifdef Q_OS_SYMBIAN
    //ensure temp and working directories exist
    QFileSystemEngine::createDirectory(QFileSystemEntry(QFileSystemEngine::tempPath()), true);
    QFileSystemEngine::createDirectory(QFileSystemEntry(QFileSystemEngine::currentPath()), true);
#endif

#ifndef QT_NO_THREAD
    QThread::initialize();
#endif

    // use the event dispatcher created by the app programmer (if any)
    if (!QCoreApplicationPrivate::eventDispatcher)
        QCoreApplicationPrivate::eventDispatcher = d->threadData->eventDispatcher;
    // otherwise we create one
    if (!QCoreApplicationPrivate::eventDispatcher)
        d->createEventDispatcher();
    Q_ASSERT(QCoreApplicationPrivate::eventDispatcher != 0);

    if (!QCoreApplicationPrivate::eventDispatcher->parent())
        QCoreApplicationPrivate::eventDispatcher->moveToThread(d->threadData->thread);

    d->threadData->eventDispatcher = QCoreApplicationPrivate::eventDispatcher;

#if !defined(QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
    if (!coreappdata()->app_libpaths) {
        // make sure that library paths is initialized
        libraryPaths();
    } else {
        d->appendApplicationPathToLibraryPaths();
    }
#endif

#if defined(Q_OS_UNIX) && !(defined(QT_NO_PROCESS))
    // Make sure the process manager thread object is created in the main
    // thread.
    QProcessPrivate::initializeProcessManager();
#endif

#ifdef QT_EVAL
    extern void qt_core_eval_init(uint);
    qt_core_eval_init(d->application_type);
#endif

#if    defined(Q_OS_SYMBIAN)  \
    && defined(Q_CC_NOKIAX86) \
    && defined(QT_DEBUG)

    {
        RLoader loader;
        CleanupClosePushL(loader);
        User::LeaveIfError(loader.Connect());
        User::LeaveIfError(loader.CancelLazyDllUnload());
        CleanupStack::PopAndDestroy(&loader);
    }
#endif

    d->processCommandLineArguments();

    qt_startup_hook();
}

#if defined(Q_OS_SYMBIAN) && !defined(QT_NO_SYSTEMLOCALE)
void QCoreApplicationPrivate::symbianInit()
{
    if (!environmentChangeNotifier)
        environmentChangeNotifier.reset(new QEnvironmentChangeNotifier);
}
#endif


QCoreApplication::~QCoreApplication()
{
    qt_call_post_routines();

    self = 0;
    QCoreApplicationPrivate::is_app_closing = true;
    QCoreApplicationPrivate::is_app_running = false;

#if !defined(QT_NO_THREAD)
#if !defined(QT_NO_CONCURRENT)
    // Synchronize and stop the global thread pool threads.
    QThreadPool *globalThreadPool = 0;
    QT_TRY {
        globalThreadPool = QThreadPool::globalInstance();
    } QT_CATCH (...) {
        // swallow the exception, since destructors shouldn't throw
    }
    if (globalThreadPool)
        globalThreadPool->waitForDone();
#endif
    QThread::cleanup();
#endif

    d_func()->threadData->eventDispatcher = 0;
    if (QCoreApplicationPrivate::eventDispatcher)
        QCoreApplicationPrivate::eventDispatcher->closingDown();
    QCoreApplicationPrivate::eventDispatcher = 0;

#ifndef QT_NO_LIBRARY
    delete coreappdata()->app_libpaths;
    coreappdata()->app_libpaths = 0;
#endif
}


void QCoreApplication::setAttribute(Qt::ApplicationAttribute attribute, bool on)
{
    if (on)
        QCoreApplicationPrivate::attribs |= 1 << attribute;
    else
        QCoreApplicationPrivate::attribs &= ~(1 << attribute);
#ifdef Q_OS_MAC
    // Turn on the no native menubar here, since we used to
    // do this implicitly. We DO NOT flip it off if someone sets
    // it to false.
    // Ideally, we'd have magic that would be something along the lines of
    // "follow MacPluginApplication" unless explicitly set.
    // Considering this attribute isn't only at the beginning
    // it's unlikely it will ever be a problem, but I want
    // to have the behavior documented here.
    if (attribute == Qt::AA_MacPluginApplication && on
          && !testAttribute(Qt::AA_DontUseNativeMenuBar)) {
        setAttribute(Qt::AA_DontUseNativeMenuBar, true);
    }
#endif
}

bool QCoreApplication::testAttribute(Qt::ApplicationAttribute attribute)
{
    return QCoreApplicationPrivate::testAttribute(attribute);
}


bool QCoreApplication::notifyInternal(QObject *receiver, QEvent *event)
{
    // Make it possible for Qt Jambi and QSA to hook into events even
    // though QApplication is subclassed...
    bool result = false;
    void *cbdata[] = { receiver, event, &result };
    if (QInternal::activateCallbacks(QInternal::EventNotifyCallback, cbdata)) {
        return result;
    }

    // Qt enforces the rule that events can only be sent to objects in
    // the current thread, so receiver->d_func()->threadData is
    // equivalent to QThreadData::current(), just without the function
    // call overhead.
    QObjectPrivate *d = receiver->d_func();
    QThreadData *threadData = d->threadData;
    ++threadData->loopLevel;

#ifdef QT_JAMBI_BUILD
    int deleteWatch = 0;
    int *oldDeleteWatch = QObjectPrivate::setDeleteWatch(d, &deleteWatch);

    bool inEvent = d->inEventHandler;
    d->inEventHandler = true;
#endif

    bool returnValue;
    QT_TRY {
        returnValue = notify(receiver, event);
    } QT_CATCH (...) {
        --threadData->loopLevel;
        QT_RETHROW;
    }

#ifdef QT_JAMBI_BUILD
    // Restore the previous state if the object was not deleted..
    if (!deleteWatch) {
        d->inEventHandler = inEvent;
    }
    QObjectPrivate::resetDeleteWatch(d, oldDeleteWatch, deleteWatch);
#endif
    --threadData->loopLevel;
    return returnValue;
}


bool QCoreApplication::notify(QObject *receiver, QEvent *event)
{
    Q_D(QCoreApplication);
    // no events are delivered after ~QCoreApplication() has started
    if (QCoreApplicationPrivate::is_app_closing)
        return true;

    if (receiver == 0) {                        // serious error
        qWarning("QCoreApplication::notify: Unexpected null receiver");
        return true;
    }

#ifndef QT_NO_DEBUG
    d->checkReceiverThread(receiver);
#endif

    return receiver->isWidgetType() ? false : d->notify_helper(receiver, event);
}

bool QCoreApplicationPrivate::sendThroughApplicationEventFilters(QObject *receiver, QEvent *event)
{
    if (receiver->d_func()->threadData == this->threadData) {
        // application event filters are only called for objects in the GUI thread
        for (int i = 0; i < eventFilters.size(); ++i) {
            register QObject *obj = eventFilters.at(i);
            if (!obj)
                continue;
            if (obj->d_func()->threadData != threadData) {
                qWarning("QCoreApplication: Application event filter cannot be in a different thread.");
                continue;
            }
            if (obj->eventFilter(receiver, event))
                return true;
        }
    }
    return false;
}

bool QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject *receiver, QEvent *event)
{
    Q_Q(QCoreApplication);
    if (receiver != q) {
        for (int i = 0; i < receiver->d_func()->eventFilters.size(); ++i) {
            register QObject *obj = receiver->d_func()->eventFilters.at(i);
            if (!obj)
                continue;
            if (obj->d_func()->threadData != receiver->d_func()->threadData) {
                qWarning("QCoreApplication: Object event filter cannot be in a different thread.");
                continue;
            }
            if (obj->eventFilter(receiver, event))
                return true;
        }
    }
    return false;
}

bool QCoreApplicationPrivate::notify_helper(QObject *receiver, QEvent * event)
{
    // send to all application event filters
    if (sendThroughApplicationEventFilters(receiver, event))
        return true;
    // send to all receiver event filters
    if (sendThroughObjectEventFilters(receiver, event))
        return true;
    // deliver the event
    return receiver->event(event);
}

bool QCoreApplication::startingUp()
{
    return !QCoreApplicationPrivate::is_app_running;
}

bool QCoreApplication::closingDown()
{
    return QCoreApplicationPrivate::is_app_closing;
}


void QCoreApplication::processEvents(QEventLoop::ProcessEventsFlags flags)
{
    QThreadData *data = QThreadData::current();
    if (!data->eventDispatcher)
        return;
    if (flags & QEventLoop::DeferredDeletion)
        QCoreApplication::sendPostedEvents(0, QEvent::DeferredDelete);
    data->eventDispatcher->processEvents(flags);
}

void QCoreApplication::processEvents(QEventLoop::ProcessEventsFlags flags, int maxtime)
{
    QThreadData *data = QThreadData::current();
    if (!data->eventDispatcher)
        return;
    QElapsedTimer start;
    start.start();
    if (flags & QEventLoop::DeferredDeletion)
        QCoreApplication::sendPostedEvents(0, QEvent::DeferredDelete);
    while (data->eventDispatcher->processEvents(flags & ~QEventLoop::WaitForMoreEvents)) {
        if (start.elapsed() > maxtime)
            break;
        if (flags & QEventLoop::DeferredDeletion)
            QCoreApplication::sendPostedEvents(0, QEvent::DeferredDelete);
    }
}

/*****************************************************************************
  Main event loop wrappers
 *****************************************************************************/

int QCoreApplication::exec()
{
    if (!QCoreApplicationPrivate::checkInstance("exec"))
        return -1;

    QThreadData *threadData = self->d_func()->threadData;
    if (threadData != QThreadData::current()) {
        qWarning("%s::exec: Must be called from the main thread", self->metaObject()->className());
        return -1;
    }
    if (!threadData->eventLoops.isEmpty()) {
        qWarning("QCoreApplication::exec: The event loop is already running");
        return -1;
    }

    threadData->quitNow = false;
    QEventLoop eventLoop;
    self->d_func()->in_exec = true;
    self->d_func()->aboutToQuitEmitted = false;
    int returnCode = eventLoop.exec();
    threadData->quitNow = false;
    if (self) {
        self->d_func()->in_exec = false;
        if (!self->d_func()->aboutToQuitEmitted)
            emit self->aboutToQuit();
        self->d_func()->aboutToQuitEmitted = true;
        sendPostedEvents(0, QEvent::DeferredDelete);
    }

    return returnCode;
}


void QCoreApplication::exit(int returnCode)
{
    if (!self)
        return;
    QThreadData *data = self->d_func()->threadData;
    data->quitNow = true;
    for (int i = 0; i < data->eventLoops.size(); ++i) {
        QEventLoop *eventLoop = data->eventLoops.at(i);
        eventLoop->exit(returnCode);
    }
}

/*****************************************************************************
  QCoreApplication management of posted events
 *****************************************************************************/

void QCoreApplication::postEvent(QObject *receiver, QEvent *event)
{
    postEvent(receiver, event, Qt::NormalEventPriority);
}


void QCoreApplication::postEvent(QObject *receiver, QEvent *event, int priority)
{
    if (receiver == 0) {
        qWarning("QCoreApplication::postEvent: Unexpected null receiver");
        delete event;
        return;
    }

    QThreadData * volatile * pdata = &receiver->d_func()->threadData;
    QThreadData *data = *pdata;
    if (!data) {
        // posting during destruction? just delete the event to prevent a leak
        delete event;
        return;
    }

    // lock the post event mutex
    data->postEventList.mutex.lock();

    // if object has moved to another thread, follow it
    while (data != *pdata) {
        data->postEventList.mutex.unlock();

        data = *pdata;
        if (!data) {
            // posting during destruction? just delete the event to prevent a leak
            delete event;
            return;
        }

        data->postEventList.mutex.lock();
    }

    QMutexUnlocker locker(&data->postEventList.mutex);

    // if this is one of the compressible events, do compression
    if (receiver->d_func()->postedEvents
        && self && self->compressEvent(event, receiver, &data->postEventList)) {
        return;
    }

    if (event->type() == QEvent::DeferredDelete && data == QThreadData::current()) {
        // remember the current running eventloop for DeferredDelete
        // events posted in the receiver's thread
        event->d = reinterpret_cast<QEventPrivate *>(quintptr(data->loopLevel));
    }

    // delete the event on exceptions to protect against memory leaks till the event is
    // properly owned in the postEventList
    QScopedPointer<QEvent> eventDeleter(event);
    data->postEventList.addEvent(QPostEvent(receiver, event, priority));
    eventDeleter.take();
    event->posted = true;
    ++receiver->d_func()->postedEvents;
    data->canWait = false;
    locker.unlock();

    if (data->eventDispatcher)
        data->eventDispatcher->wakeUp();
}

bool QCoreApplication::compressEvent(QEvent *event, QObject *receiver, QPostEventList *postedEvents)
{
#ifdef Q_WS_WIN
    Q_ASSERT(event);
    Q_ASSERT(receiver);
    Q_ASSERT(postedEvents);

    // compress posted timers to this object.
    if (event->type() == QEvent::Timer && receiver->d_func()->postedEvents > 0) {
        int timerId = ((QTimerEvent *) event)->timerId();
        for (int i=0; i<postedEvents->size(); ++i) {
            const QPostEvent &e = postedEvents->at(i);
            if (e.receiver == receiver && e.event && e.event->type() == QEvent::Timer
                && ((QTimerEvent *) e.event)->timerId() == timerId) {
                delete event;
                return true;
            }
        }
    } else
#endif
        if ((event->type() == QEvent::DeferredDelete
             || event->type() == QEvent::Quit)
            && receiver->d_func()->postedEvents > 0) {
            for (int i = 0; i < postedEvents->size(); ++i) {
                const QPostEvent &cur = postedEvents->at(i);
                if (cur.receiver != receiver
                    || cur.event == 0
                    || cur.event->type() != event->type())
                    continue;
                // found an event for this receiver
                delete event;
                return true;
            }
        }
    return false;
}

void QCoreApplication::sendPostedEvents(QObject *receiver, int event_type)
{
    QThreadData *data = QThreadData::current();

    QCoreApplicationPrivate::sendPostedEvents(receiver, event_type, data);
}

void QCoreApplicationPrivate::sendPostedEvents(QObject *receiver, int event_type,
                                               QThreadData *data)
{
    if (event_type == -1) {
        // we were called by an obsolete event dispatcher.
        event_type = 0;
    }

    if (receiver && receiver->d_func()->threadData != data) {
        qWarning("QCoreApplication::sendPostedEvents: Cannot send "
                 "posted events for objects in another thread");
        return;
    }

    ++data->postEventList.recursion;

#ifdef QT3_SUPPORT
    if (event_type == QEvent::ChildInserted) {
        if (receiver) {
            // optimize sendPostedEvents(w, QEvent::ChildInserted) calls away
            receiver->d_func()->sendPendingChildInsertedEvents();
            --data->postEventList.recursion;
            return;
        }

        // ChildInserted events are sent in response to *Request
        event_type = QEvent::ChildInsertedRequest;
    }
#endif

    QMutexLocker locker(&data->postEventList.mutex);

    // by default, we assume that the event dispatcher can go to sleep after
    // processing all events. if any new events are posted while we send
    // events, canWait will be set to false.
    data->canWait = (data->postEventList.size() == 0);

    if (data->postEventList.size() == 0 || (receiver && !receiver->d_func()->postedEvents)) {
        --data->postEventList.recursion;
        return;
    }

    data->canWait = true;

    // okay. here is the tricky loop. be careful about optimizing
    // this, it looks the way it does for good reasons.
    int startOffset = data->postEventList.startOffset;
    int &i = (!event_type && !receiver) ? data->postEventList.startOffset : startOffset;
    data->postEventList.insertionOffset = data->postEventList.size();

    while (i < data->postEventList.size()) {
        // avoid live-lock
        if (i >= data->postEventList.insertionOffset)
            break;

        const QPostEvent &pe = data->postEventList.at(i);
        ++i;

        if (!pe.event)
            continue;
        if ((receiver && receiver != pe.receiver) || (event_type && event_type != pe.event->type())) {
            data->canWait = false;
            continue;
        }

        if (pe.event->type() == QEvent::DeferredDelete) {
            // DeferredDelete events are only sent when we are explicitly asked to
            // (s.a. QEvent::DeferredDelete), and then only if the event loop that
            // posted the event has returned.
            const bool allowDeferredDelete =
                (quintptr(pe.event->d) > unsigned(data->loopLevel)
                 || (!quintptr(pe.event->d) && data->loopLevel > 0)
                 || (event_type == QEvent::DeferredDelete
                     && quintptr(pe.event->d) == unsigned(data->loopLevel)));
            if (!allowDeferredDelete) {
                // cannot send deferred delete
                if (!event_type && !receiver) {
                    // don't lose the event
                    data->postEventList.addEvent(pe);
                    const_cast<QPostEvent &>(pe).event = 0;
                }
                continue;
            }
        }

        // first, we diddle the event so that we can deliver
        // it, and that no one will try to touch it later.
        pe.event->posted = false;
        QEvent * e = pe.event;
        QObject * r = pe.receiver;

        --r->d_func()->postedEvents;
        Q_ASSERT(r->d_func()->postedEvents >= 0);

        // next, update the data structure so that we're ready
        // for the next event.
        const_cast<QPostEvent &>(pe).event = 0;

        locker.unlock();
        // after all that work, it's time to deliver the event.
#ifdef QT_NO_EXCEPTIONS
        QCoreApplication::sendEvent(r, e);
#else
        try {
            QCoreApplication::sendEvent(r, e);
        } catch (...) {
            delete e;
            locker.relock();

            // since we were interrupted, we need another pass to make sure we clean everything up
            data->canWait = false;

            // uglehack: copied from below
            --data->postEventList.recursion;
            if (!data->postEventList.recursion && !data->canWait && data->eventDispatcher)
                data->eventDispatcher->wakeUp();
            throw;              // rethrow
        }
#endif

        delete e;
        locker.relock();

        // careful when adding anything below this point - the
        // sendEvent() call might invalidate any invariants this
        // function depends on.
    }

    --data->postEventList.recursion;
    if (!data->postEventList.recursion && !data->canWait && data->eventDispatcher)
        data->eventDispatcher->wakeUp();

    // clear the global list, i.e. remove everything that was
    // delivered.
    if (!event_type && !receiver && data->postEventList.startOffset >= 0) {
        const QPostEventList::iterator it = data->postEventList.begin();
        data->postEventList.erase(it, it + data->postEventList.startOffset);
        data->postEventList.insertionOffset -= data->postEventList.startOffset;
        Q_ASSERT(data->postEventList.insertionOffset >= 0);
        data->postEventList.startOffset = 0;
    }
}

void QCoreApplication::removePostedEvents(QObject *receiver)
{
    removePostedEvents(receiver, 0);
}

void QCoreApplication::removePostedEvents(QObject *receiver, int eventType)
{
#ifdef QT3_SUPPORT
    if (eventType == QEvent::ChildInserted)
        eventType = QEvent::ChildInsertedRequest;
#endif

    QThreadData *data = receiver ? receiver->d_func()->threadData : QThreadData::current();
    QMutexLocker locker(&data->postEventList.mutex);

    // the QObject destructor calls this function directly.  this can
    // happen while the event loop is in the middle of posting events,
    // and when we get here, we may not have any more posted events
    // for this object.
    if (receiver && !receiver->d_func()->postedEvents)
        return;

    //we will collect all the posted events for the QObject
    //and we'll delete after the mutex was unlocked
    QVarLengthArray<QEvent*> events;
    int n = data->postEventList.size();
    int j = 0;

    for (int i = 0; i < n; ++i) {
        const QPostEvent &pe = data->postEventList.at(i);

        if ((!receiver || pe.receiver == receiver)
            && (pe.event && (eventType == 0 || pe.event->type() == eventType))) {
            --pe.receiver->d_func()->postedEvents;
#ifdef QT3_SUPPORT
            if (pe.event->type() == QEvent::ChildInsertedRequest)
                pe.receiver->d_func()->pendingChildInsertedEvents.clear();
#endif
            pe.event->posted = false;
            events.append(pe.event);
            const_cast<QPostEvent &>(pe).event = 0;
        } else if (!data->postEventList.recursion) {
            if (i != j)
                data->postEventList.swap(i, j);
            ++j;
        }
    }

#ifdef QT_DEBUG
    if (receiver && eventType == 0) {
        Q_ASSERT(!receiver->d_func()->postedEvents);
    }
#endif

    if (!data->postEventList.recursion) {
        // truncate list
        data->postEventList.erase(data->postEventList.begin() + j, data->postEventList.end());
    }

    locker.unlock();
    for (int i = 0; i < events.count(); ++i) {
        delete events[i];
    }
}

void QCoreApplicationPrivate::removePostedEvent(QEvent * event)
{
    if (!event || !event->posted)
        return;

    QThreadData *data = QThreadData::current();

    QMutexLocker locker(&data->postEventList.mutex);

    if (data->postEventList.size() == 0) {
#if defined(QT_DEBUG)
        qDebug("QCoreApplication::removePostedEvent: Internal error: %p %d is posted",
                (void*)event, event->type());
        return;
#endif
    }

    for (int i = 0; i < data->postEventList.size(); ++i) {
        const QPostEvent & pe = data->postEventList.at(i);
        if (pe.event == event) {
#ifndef QT_NO_DEBUG
            qWarning("QCoreApplication::removePostedEvent: Event of type %d deleted while posted to %s %s",
                     event->type(),
                     pe.receiver->metaObject()->className(),
                     pe.receiver->objectName().toLocal8Bit().data());
#endif
            --pe.receiver->d_func()->postedEvents;
            pe.event->posted = false;
            delete pe.event;
            const_cast<QPostEvent &>(pe).event = 0;
            return;
        }
    }
}

bool QCoreApplication::event(QEvent *e)
{
    if (e->type() == QEvent::Quit) {
        quit();
        return true;
    }
    return QObject::event(e);
}

void QCoreApplication::quit()
{
    exit(0);
}

#ifndef QT_NO_TRANSLATION

void QCoreApplication::installTranslator(QTranslator *translationFile)
{
    if (!translationFile)
        return;

    if (!QCoreApplicationPrivate::checkInstance("installTranslator"))
        return;
    QCoreApplicationPrivate *d = self->d_func();
    d->translators.prepend(translationFile);

#ifndef QT_NO_TRANSLATION_BUILDER
    if (translationFile->isEmpty())
        return;
#endif

    QEvent ev(QEvent::LanguageChange);
    QCoreApplication::sendEvent(self, &ev);
}

void QCoreApplication::removeTranslator(QTranslator *translationFile)
{
    if (!translationFile)
        return;
    if (!QCoreApplicationPrivate::checkInstance("removeTranslator"))
        return;
    QCoreApplicationPrivate *d = self->d_func();
    if (d->translators.removeAll(translationFile) && !self->closingDown()) {
        QEvent ev(QEvent::LanguageChange);
        QCoreApplication::sendEvent(self, &ev);
    }
}

QString QCoreApplication::translate(const char *context, const char *sourceText,
                                    const char *disambiguation, Encoding encoding)
{
    return translate(context, sourceText, disambiguation, encoding, -1);
}

static void replacePercentN(QString *result, int n)
{
    if (n >= 0) {
        int percentPos = 0;
        int len = 0;
        while ((percentPos = result->indexOf(QLatin1Char('%'), percentPos + len)) != -1) {
            len = 1;
            QString fmt;
            if (result->at(percentPos + len) == QLatin1Char('L')) {
                ++len;
                fmt = QLatin1String("%L1");
            } else {
                fmt = QLatin1String("%1");
            }
            if (result->at(percentPos + len) == QLatin1Char('n')) {
                fmt = fmt.arg(n);
                ++len;
                result->replace(percentPos, len, fmt);
                len = fmt.length();
            }
        }
    }
}

QString QCoreApplication::translate(const char *context, const char *sourceText,
                                    const char *disambiguation, Encoding encoding, int n)
{
    QString result;

    if (!sourceText)
        return result;

    if (self && !self->d_func()->translators.isEmpty()) {
        QList<QTranslator*>::ConstIterator it;
        QTranslator *translationFile;
        for (it = self->d_func()->translators.constBegin(); it != self->d_func()->translators.constEnd(); ++it) {
            translationFile = *it;
            result = translationFile->translate(context, sourceText, disambiguation, n);
            if (!result.isEmpty())
                break;
        }
    }

    if (result.isEmpty()) {
#ifdef QT_NO_TEXTCODEC
        Q_UNUSED(encoding)
#else
        if (encoding == UnicodeUTF8)
            result = QString::fromUtf8(sourceText);
        else if (QTextCodec::codecForTr() != 0)
            result = QTextCodec::codecForTr()->toUnicode(sourceText);
        else
#endif
            result = QString::fromLatin1(sourceText);
    }

    replacePercentN(&result, n);
    return result;
}

// Declared in qglobal.h
QString qtTrId(const char *id, int n)
{
    return QCoreApplication::translate(0, id, 0, QCoreApplication::UnicodeUTF8, n);
}

bool QCoreApplicationPrivate::isTranslatorInstalled(QTranslator *translator)
{
    return QCoreApplication::self
           && QCoreApplication::self->d_func()->translators.contains(translator);
}

#endif //QT_NO_TRANSLATE

QString QCoreApplication::applicationDirPath()
{
    if (!self) {
        qWarning("QCoreApplication::applicationDirPath: Please instantiate the QApplication object first");
        return QString();
    }

    QCoreApplicationPrivate *d = self->d_func();
    if (d->cachedApplicationDirPath.isNull())
#if defined(Q_OS_SYMBIAN)
    {
        QString appPath;
        RFs& fs = qt_s60GetRFs();
        TChar driveChar;
        QChar qDriveChar;
        driveChar = (RProcess().FileName())[0];

        //Check if the process is installed in a read only drive (typically ROM),
        //and use the system drive (typically C:) if so.
        TInt drive;
        TDriveInfo driveInfo;
        TInt err = fs.CharToDrive(driveChar, drive);
        if (err == KErrNone) {
            err = fs.Drive(driveInfo, drive);
        }
        if (err != KErrNone || (driveInfo.iDriveAtt & KDriveAttRom) || (driveInfo.iMediaAtt
            & KMediaAttWriteProtected)) {
            drive = fs.GetSystemDrive();
            fs.DriveToChar(drive, driveChar);
        }

        qDriveChar = QChar(QLatin1Char(driveChar)).toUpper();

        TFileName privatePath;
        fs.PrivatePath(privatePath);
        appPath = qt_TDesC2QString(privatePath);
        appPath.prepend(QLatin1Char(':')).prepend(qDriveChar);

        d->cachedApplicationDirPath = QFileInfo(appPath).path();
    }
#else
        d->cachedApplicationDirPath = QFileInfo(applicationFilePath()).path();
#endif
    return d->cachedApplicationDirPath;
}

QString QCoreApplication::applicationFilePath()
{
    if (!self) {
        qWarning("QCoreApplication::applicationFilePath: Please instantiate the QApplication object first");
        return QString();
    }

    QCoreApplicationPrivate *d = self->d_func();
    if (!d->cachedApplicationFilePath.isNull())
        return d->cachedApplicationFilePath;

#if defined(Q_WS_WIN)
    d->cachedApplicationFilePath = QFileInfo(qAppFileName()).filePath();
    return d->cachedApplicationFilePath;
#elif defined(Q_OS_BLACKBERRY)
    if (!arguments().isEmpty()) { // args is never empty, but the navigator can change behaviour some day
        QFileInfo fileInfo(arguments().at(0));
        const bool zygotized = fileInfo.exists();
        if (zygotized) {
            // Handle the zygotized case:
            d->cachedApplicationFilePath = QDir::cleanPath(fileInfo.absoluteFilePath());
            return d->cachedApplicationFilePath;
        }
    }

    // Handle the non-zygotized case:
    const size_t maximum_path = static_cast<size_t>(pathconf("/",_PC_PATH_MAX));
    char buff[maximum_path+1];
    if (_cmdname(buff)) {
        d->cachedApplicationFilePath = QDir::cleanPath(QString::fromLocal8Bit(buff));
        return d->cachedApplicationFilePath;
    } else {
        qWarning("QCoreApplication::applicationFilePath: _cmdname() failed");
        // _cmdname() won't fail, but just in case, fallback to the old method
        QDir dir(QLatin1String("./app/native/"));
        QStringList executables = dir.entryList(QDir::Executable | QDir::Files);
        if (!executables.empty()) {
            //We assume that there is only one executable in the folder
            d->cachedApplicationFilePath = dir.absoluteFilePath(executables.first());
            return d->cachedApplicationFilePath;
        } else {
            return QString();
        }
    }
#elif defined(Q_WS_MAC)
    QString qAppFileName_str = qAppFileName();
    if(!qAppFileName_str.isEmpty()) {
        QFileInfo fi(qAppFileName_str);
        d->cachedApplicationFilePath = fi.exists() ? fi.canonicalFilePath() : QString();
        return d->cachedApplicationFilePath;
    }
#endif
#if defined(Q_OS_SYMBIAN)
    QString appPath;
    RProcess proc;
    TInt err = proc.Open(proc.Id());
    if (err == KErrNone) {
        TFileName procName = proc.FileName();
        appPath.append(QString(reinterpret_cast<const QChar*>(procName.Ptr()), procName.Length()));
        proc.Close();
    }

    d->cachedApplicationFilePath = appPath;
    return d->cachedApplicationFilePath;

#elif defined( Q_OS_UNIX )
#  ifdef Q_OS_LINUX
    // Try looking for a /proc/<pid>/exe symlink first which points to
    // the absolute path of the executable
    QFileInfo pfi(QString::fromLatin1("/proc/%1/exe").arg(getpid()));
    if (pfi.exists() && pfi.isSymLink()) {
        d->cachedApplicationFilePath = pfi.canonicalFilePath();
        return d->cachedApplicationFilePath;
    }
#  endif

    QString argv0 = QFile::decodeName(QByteArray(argv()[0]));
    QString absPath;

    if (!argv0.isEmpty() && argv0.at(0) == QLatin1Char('/')) {
        /*
          If argv0 starts with a slash, it is already an absolute
          file path.
        */
        absPath = argv0;
    } else if (argv0.contains(QLatin1Char('/'))) {
        /*
          If argv0 contains one or more slashes, it is a file path
          relative to the current directory.
        */
        absPath = QDir::current().absoluteFilePath(argv0);
    } else {
        /*
          Otherwise, the file path has to be determined using the
          PATH environment variable.
        */
        QByteArray pEnv = qgetenv("PATH");
        QDir currentDir = QDir::current();
        QStringList paths = QString::fromLocal8Bit(pEnv.constData()).split(QLatin1Char(':'));
        for (QStringList::const_iterator p = paths.constBegin(); p != paths.constEnd(); ++p) {
            if ((*p).isEmpty())
                continue;
            QString candidate = currentDir.absoluteFilePath(*p + QLatin1Char('/') + argv0);
            QFileInfo candidate_fi(candidate);
            if (candidate_fi.exists() && !candidate_fi.isDir()) {
                absPath = candidate;
                break;
            }
        }
    }

    absPath = QDir::cleanPath(absPath);

    QFileInfo fi(absPath);
    d->cachedApplicationFilePath = fi.exists() ? fi.canonicalFilePath() : QString();
    return d->cachedApplicationFilePath;
#endif
}

qint64 QCoreApplication::applicationPid()
{
#if defined(Q_OS_WIN32) || defined(Q_OS_WINCE)
    return GetCurrentProcessId();
#elif defined(Q_OS_VXWORKS)
    return (pid_t) taskIdCurrent;
#else
    return getpid();
#endif
}

int QCoreApplication::argc()
{
    if (!self) {
        qWarning("QCoreApplication::argc: Please instantiate the QApplication object first");
        return 0;
    }
    return self->d_func()->argc;
}


char **QCoreApplication::argv()
{
    if (!self) {
        qWarning("QCoreApplication::argv: Please instantiate the QApplication object first");
        return 0;
    }
    return self->d_func()->argv;
}

QStringList QCoreApplication::arguments()
{
    QStringList list;

    if (!self) {
        qWarning("QCoreApplication::arguments: Please instantiate the QApplication object first");
        return list;
    }
#ifdef Q_OS_WIN
    QString cmdline = QString::fromWCharArray(GetCommandLine());

#if defined(Q_OS_WINCE)
    wchar_t tempFilename[MAX_PATH+1];
    if (GetModuleFileName(0, tempFilename, MAX_PATH)) {
        tempFilename[MAX_PATH] = 0;
        cmdline.prepend(QLatin1Char('\"') + QString::fromWCharArray(tempFilename) + QLatin1String("\" "));
    }
#endif // Q_OS_WINCE

    list = qWinCmdArgs(cmdline);
    if (self->d_func()->application_type) { // GUI app? Skip known - see qapplication.cpp
        QStringList stripped;
        for (int a = 0; a < list.count(); ++a) {
            QString arg = list.at(a);
            QByteArray l1arg = arg.toLatin1();
            if (l1arg == "-qdevel" ||
                l1arg == "-qdebug" ||
                l1arg == "-reverse" ||
                l1arg == "-stylesheet" ||
                l1arg == "-widgetcount")
                ;
            else if (l1arg.startsWith("-style=") ||
                     l1arg.startsWith("-qmljsdebugger="))
                ;
            else if (l1arg == "-style" ||
                     l1arg == "-qmljsdebugger" ||
                     l1arg == "-session" ||
                     l1arg == "-graphicssystem" ||
                     l1arg == "-testability")
                ++a;
            else
                stripped += arg;
        }
        list = stripped;
    }
#else
    const int ac = self->d_func()->argc;
    char ** const av = self->d_func()->argv;
    for (int a = 0; a < ac; ++a) {
        list << QString::fromLocal8Bit(av[a]);
    }
#endif

    return list;
}

void QCoreApplication::setOrganizationName(const QString &orgName)
{
    coreappdata()->orgName = orgName;
}

QString QCoreApplication::organizationName()
{
#ifdef Q_OS_BLACKBERRY
    coreappdata()->loadManifest();
#endif
    return coreappdata()->orgName;
}

void QCoreApplication::setOrganizationDomain(const QString &orgDomain)
{
    coreappdata()->orgDomain = orgDomain;
}

QString QCoreApplication::organizationDomain()
{
    return coreappdata()->orgDomain;
}

void QCoreApplication::setApplicationName(const QString &application)
{
    coreappdata()->application = application;
}

QString QCoreApplication::applicationName()
{
#ifdef Q_OS_BLACKBERRY
    coreappdata()->loadManifest();
#endif

    QString appname = coreappdata() ? coreappdata()->application : QString();
    if (appname.isEmpty() && QCoreApplication::self)
        appname = QCoreApplication::self->d_func()->appName();

    return appname;
}

void QCoreApplication::setApplicationVersion(const QString &version)
{
    coreappdata()->applicationVersion = version;
}

QString QCoreApplication::applicationVersion()
{
#ifdef Q_OS_BLACKBERRY
    coreappdata()->loadManifest();
#endif
    return coreappdata()->applicationVersion;
}

#ifndef QT_NO_LIBRARY

#if defined(Q_OS_SYMBIAN)
void qt_symbian_installLibraryPaths(QString installPathPlugins, QStringList& libPaths)
{
    // Add existing path on all drives for relative PluginsPath in Symbian
    QString tempPath = installPathPlugins;
    if (tempPath.at(tempPath.length() - 1) != QDir::separator()) {
        tempPath += QDir::separator();
    }
    RFs& fs = qt_s60GetRFs();
    TPtrC tempPathPtr(reinterpret_cast<const TText*> (tempPath.constData()));
    // Symbian searches should start from Y:. Fix start drive otherwise TFindFile starts from the session drive
    _LIT(KStartDir, "Y:");
    TFileName dirPath(KStartDir);
    dirPath.Append(tempPathPtr);
    TFindFile finder(fs);
    TInt err = finder.FindByDir(tempPathPtr, dirPath);
    while (err == KErrNone) {
        QString foundDir(reinterpret_cast<const QChar *>(finder.File().Ptr()),
                         finder.File().Length());
        foundDir = QDir(foundDir).canonicalPath();
        if (!libPaths.contains(foundDir))
            libPaths.append(foundDir);
        err = finder.Find();
    }
}
#endif

Q_GLOBAL_STATIC_WITH_ARGS(QMutex, libraryPathMutex, (QMutex::Recursive))


QStringList QCoreApplication::libraryPaths()
{
    QMutexLocker locker(libraryPathMutex());
    if (!coreappdata()->app_libpaths) {
        QStringList *app_libpaths = coreappdata()->app_libpaths = new QStringList;
        QString installPathPlugins =  QLibraryInfo::location(QLibraryInfo::PluginsPath);
#if defined(Q_OS_SYMBIAN)
        if (installPathPlugins.at(1) != QChar(QLatin1Char(':'))) {
            qt_symbian_installLibraryPaths(installPathPlugins, *app_libpaths);
        }
#else
        if (QFile::exists(installPathPlugins)) {
            // Make sure we convert from backslashes to slashes.
            installPathPlugins = QDir(installPathPlugins).canonicalPath();
            if (!app_libpaths->contains(installPathPlugins))
                app_libpaths->append(installPathPlugins);
        }
#endif

        // If QCoreApplication is not yet instantiated,
        // make sure we add the application path when we construct the QCoreApplication
        if (self) self->d_func()->appendApplicationPathToLibraryPaths();

        const QByteArray libPathEnv = qgetenv("QT_PLUGIN_PATH");
        if (!libPathEnv.isEmpty()) {
#if defined(Q_OS_WIN) || defined(Q_OS_SYMBIAN)
            QLatin1Char pathSep(';');
#else
            QLatin1Char pathSep(':');
#endif
            QStringList paths = QString::fromLatin1(libPathEnv).split(pathSep, QString::SkipEmptyParts);
            for (QStringList::const_iterator it = paths.constBegin(); it != paths.constEnd(); ++it) {
                QString canonicalPath = QDir(*it).canonicalPath();
                if (!canonicalPath.isEmpty()
                    && !app_libpaths->contains(canonicalPath)) {
                    app_libpaths->append(canonicalPath);
                }
            }
        }
    }
    return *(coreappdata()->app_libpaths);
}



void QCoreApplication::setLibraryPaths(const QStringList &paths)
{
    QMutexLocker locker(libraryPathMutex());
    if (!coreappdata()->app_libpaths)
        coreappdata()->app_libpaths = new QStringList;
    *(coreappdata()->app_libpaths) = paths;
    locker.unlock();
    QFactoryLoader::refreshAll();
}

void QCoreApplication::addLibraryPath(const QString &path)
{
    if (path.isEmpty())
        return;

    QMutexLocker locker(libraryPathMutex());

    // make sure that library paths is initialized
    libraryPaths();

    QString canonicalPath = QDir(path).canonicalPath();
    if (!canonicalPath.isEmpty()
        && !coreappdata()->app_libpaths->contains(canonicalPath)) {
        coreappdata()->app_libpaths->prepend(canonicalPath);
        locker.unlock();
        QFactoryLoader::refreshAll();
    }
}

void QCoreApplication::removeLibraryPath(const QString &path)
{
    if (path.isEmpty())
        return;

    QMutexLocker locker(libraryPathMutex());

    // make sure that library paths is initialized
    libraryPaths();

    QString canonicalPath = QDir(path).canonicalPath();
    coreappdata()->app_libpaths->removeAll(canonicalPath);
    QFactoryLoader::refreshAll();
}

#if defined(Q_OS_SYMBIAN)
void QCoreApplicationPrivate::rebuildInstallLibraryPaths()
{
    // check there is not a single fixed install path
    QString nativeInstallPathPlugins =  QLibraryInfo::location(QLibraryInfo::PluginsPath);
    if (nativeInstallPathPlugins.at(1) == QChar(QLatin1Char(':')))
        return;
    QString installPathPlugins = QDir::cleanPath(nativeInstallPathPlugins);
    // look for the install path at the drive roots
    installPathPlugins.prepend(QChar(QLatin1Char(':')));

    QMutexLocker locker(libraryPathMutex());
    QStringList &app_libpaths = *coreappdata()->app_libpaths;
    // Build a new library path, copying non-installPath components, and replacing existing install path with new
    QStringList newPaths;
    bool installPathFound = false;
    foreach (QString path, app_libpaths) {
        if (path.mid(1).compare(installPathPlugins, Qt::CaseInsensitive) == 0) {
            // skip existing install paths, insert new install path when we find the first
            if (!installPathFound)
                qt_symbian_installLibraryPaths(nativeInstallPathPlugins, newPaths);
            installPathFound = true;
        } else {
            newPaths.append(path);
        }
    }
    app_libpaths = newPaths;
}
#endif

#endif //QT_NO_LIBRARY

QCoreApplication::EventFilter
QCoreApplication::setEventFilter(QCoreApplication::EventFilter filter)
{
    Q_D(QCoreApplication);
    EventFilter old = d->eventFilter;
    d->eventFilter = filter;
    return old;
}

bool QCoreApplication::filterEvent(void *message, long *result)
{
    Q_D(QCoreApplication);
    if (result)
        *result = 0;
    if (d->eventFilter)
        return d->eventFilter(message, result);
#ifdef Q_OS_WIN
    return winEventFilter(reinterpret_cast<MSG *>(message), result);
#else
    return false;
#endif
}

bool QCoreApplication::hasPendingEvents()
{
    QAbstractEventDispatcher *eventDispatcher = QAbstractEventDispatcher::instance();
    if (eventDispatcher)
        return eventDispatcher->hasPendingEvents();
    return false;
}

#ifdef QT3_SUPPORT

int QCoreApplication::enter_loop()
{
    if (!QCoreApplicationPrivate::checkInstance("enter_loop"))
        return -1;
    if (QThreadData::current() != self->d_func()->threadData) {
        qWarning("QCoreApplication::enter_loop: Must be called from the main thread");
        return -1;
    }
    QEventLoop eventLoop;
    int returnCode = eventLoop.exec();
    return returnCode;
}

void QCoreApplication::exit_loop()
{
    if (!QCoreApplicationPrivate::checkInstance("exit_loop"))
        return;
    QThreadData *data = QThreadData::current();
    if (data != self->d_func()->threadData) {
        qWarning("QCoreApplication::exit_loop: Must be called from the main thread");
        return;
    }
    if (!data->eventLoops.isEmpty())
        data->eventLoops.top()->exit();
}

int QCoreApplication::loopLevel()
{
    if (!QCoreApplicationPrivate::checkInstance("loopLevel"))
        return -1;
    return self->d_func()->threadData->eventLoops.size();
}
#endif

/*
    \fn void QCoreApplication::watchUnixSignal(int signal, bool watch)
    \internal
*/

QT_END_NAMESPACE