1 /***************************************************************************
2 * Copyright (C) 2005-07 by the Quassel IRC Team *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
21 #include "signalproxy.h"
24 #include <QAbstractSocket>
30 #include <QMetaMethod>
31 #include <QMetaProperty>
35 class SignalRelay: public QObject {
37 /* Q_OBJECT is not necessary or even allowed, because we implement
38 qt_metacall ourselves (and don't use any other features of the meta
42 SignalRelay(SignalProxy* parent, QObject* source);
43 int qt_metacall(QMetaObject::Call _c, int _id, void **_a);
45 void attachSignal(int methodId, const QByteArray &func);
47 void setSynchronize(bool);
48 bool synchronize() const;
55 QMultiHash<int, QByteArray> sigNames;
59 SignalRelay::SignalRelay(SignalProxy* parent, QObject* source)
65 QObject::connect(source, SIGNAL(destroyed()), parent, SLOT(detachSender()));
68 int SignalRelay::qt_metacall(QMetaObject::Call _c, int _id, void **_a) {
69 _id = QObject::qt_metacall(_c, _id, _a);
72 if(_c == QMetaObject::InvokeMetaMethod) {
73 if(sigNames.contains(_id) || synchronize()) {
74 const QList<int> &argTypes = proxy->argTypes(caller, _id);
76 int n = argTypes.size();
77 for(int i=0; i<n; i++)
78 params.append(QVariant(argTypes[i], _a[i+1]));
79 QMultiHash<int, QByteArray>::const_iterator funcIter = sigNames.constFind(_id);
80 while(funcIter != sigNames.constEnd() && funcIter.key() == _id) {
81 proxy->dispatchSignal(funcIter.value(), params);
84 if(synchronize() && proxy->syncMap(caller).contains(_id)) {
85 // qDebug() << "__SYNC__ >>>"
86 // << caller->metaObject()->className()
87 // << caller->objectName()
88 // << proxy->methodName(caller, _id)
90 params.prepend(QVariant(_id));
91 params.prepend(caller->objectName());
92 params.prepend(caller->metaObject()->className());
93 proxy->dispatchSignal((int)SignalProxy::Sync, params);
101 void SignalRelay::setSynchronize(bool sync) {
102 QHash<int, int>::const_iterator iter = proxy->syncMap(caller).constBegin();
104 while(iter != proxy->syncMap(caller).constEnd()) {
105 QMetaObject::connect(caller, iter.key(), this, QObject::staticMetaObject.methodCount() + iter.key());
108 } else if (_sync && !sync) {
109 while(iter != proxy->syncMap(caller).constEnd()) {
110 QMetaObject::disconnect(caller, iter.key(), this, QObject::staticMetaObject.methodCount() + iter.key());
117 bool SignalRelay::synchronize() const {
121 int SignalRelay::sigCount() const {
122 // only for debuging purpose
123 return sigNames.count();
126 void SignalRelay::attachSignal(int methodId, const QByteArray &func) {
127 // we ride without safetybelts here... all checking for valid method etc pp has to be done by the caller
128 // all connected methodIds are offset by the standard methodCount of QObject
129 if(!sigNames.contains(methodId))
130 QMetaObject::connect(caller, methodId, this, QObject::staticMetaObject.methodCount() + methodId);
133 if(!func.isEmpty()) {
134 fn = QMetaObject::normalizedSignature(func);
136 fn = QByteArray("2") + caller->metaObject()->method(methodId).signature();
138 sigNames.insert(methodId, fn);
140 // ====================
142 // ====================
145 // ====================
147 // ====================
148 SignalProxy::SignalProxy(QObject* parent)
151 setProxyMode(Client);
154 SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
160 SignalProxy::SignalProxy(ProxyMode mode, QIODevice* device, QObject* parent)
167 SignalProxy::~SignalProxy() {
168 QList<QObject*> senders = _relayHash.keys();
169 foreach(QObject* sender, senders)
170 detachObject(sender);
173 void SignalProxy::setProxyMode(ProxyMode mode) {
174 foreach(QIODevice* peer, _peerByteCount.keys()) {
176 qWarning() << "SignalProxy: Cannot change proxy mode while connected";
187 SignalProxy::ProxyMode SignalProxy::proxyMode() const {
191 void SignalProxy::initServer() {
194 void SignalProxy::initClient() {
195 attachSlot("__objectRenamed__", this, SLOT(objectRenamed(QByteArray, QString, QString)));
198 bool SignalProxy::addPeer(QIODevice* iodev) {
202 if(_peerByteCount.contains(iodev))
205 if(proxyMode() == Client && !_peerByteCount.isEmpty()) {
206 qWarning("SignalProxy: only one peer allowed in client mode!");
211 qWarning("SignalProxy::the device you passed is not open!");
213 connect(iodev, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
214 connect(iodev, SIGNAL(readyRead()), this, SLOT(dataAvailable()));
216 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(iodev);
218 connect(sock, SIGNAL(disconnected()), this, SLOT(removePeerBySender()));
221 _peerByteCount[iodev] = 0;
223 if(_peerByteCount.count() == 1)
229 void SignalProxy::removePeerBySender() {
230 // OK we're brutal here... but since it's a private slot we know what we've got connected to it...
231 QIODevice *ioDev = (QIODevice *)(sender());
235 void SignalProxy::objectRenamed(QString oldname, QString newname) {
236 const QMetaObject *meta = sender()->metaObject();
237 const QByteArray className(meta->className());
238 objectRenamed(className, oldname, newname);
240 if(proxyMode() == Client)
244 params << className << oldname << newname;
245 dispatchSignal("__objectRenamed__", params);
248 void SignalProxy::objectRenamed(QByteArray classname, QString oldname, QString newname) {
249 if(_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname))
250 _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
254 void SignalProxy::removePeer(QIODevice* iodev) {
255 if(_peerByteCount.isEmpty()) {
256 qWarning() << "SignalProxy: No peers in use!";
260 if(proxyMode() == Server && !iodev) {
262 QList<QIODevice *> peers = _peerByteCount.keys();
263 foreach(QIODevice *peer, peers)
267 if(proxyMode() != Server && !iodev)
268 iodev = _peerByteCount.keys().first();
272 if(!_peerByteCount.contains(iodev)) {
273 qWarning() << "SignalProxy: unknown QIODevice" << iodev;
280 if(readDataFromDevice(iodev, _peerByteCount[iodev], var))
281 receivePeerSignal(iodev, var);
285 _peerByteCount.remove(iodev);
287 disconnect(iodev, 0, this, 0);
288 emit peerRemoved(iodev);
290 if(_peerByteCount.isEmpty())
294 void SignalProxy::setArgTypes(QObject* obj, int methodId) {
295 const QMetaObject *meta = obj->metaObject();
296 QList<QByteArray> p = meta->method(methodId).parameterTypes();
299 for(int i=0; i<ct; i++)
300 argTypes.append(QMetaType::type(p.value(i)));
302 Q_ASSERT(!_classInfo[meta]->argTypes.contains(methodId));
303 _classInfo[meta]->argTypes[methodId] = argTypes;
306 const QList<int> &SignalProxy::argTypes(QObject *obj, int methodId) {
307 Q_ASSERT(_classInfo.contains(obj->metaObject()));
308 if(!_classInfo[obj->metaObject()]->argTypes.contains(methodId))
309 setArgTypes(obj, methodId);
310 return _classInfo[obj->metaObject()]->argTypes[methodId];
313 void SignalProxy::setMethodName(QObject *obj, int methodId) {
314 const QMetaObject *meta = obj->metaObject();
315 QByteArray method(::methodName(meta->method(methodId)));
316 Q_ASSERT(!_classInfo[meta]->methodNames.contains(methodId));
317 _classInfo[meta]->methodNames[methodId] = method;
320 const QByteArray &SignalProxy::methodName(QObject *obj, int methodId) {
321 Q_ASSERT(_classInfo.contains(obj->metaObject()));
322 if(!_classInfo[obj->metaObject()]->methodNames.contains(methodId))
323 setMethodName(obj, methodId);
324 return _classInfo[obj->metaObject()]->methodNames[methodId];
328 void SignalProxy::setSyncMap(QObject *obj) {
329 const QMetaObject *meta = obj->metaObject();
331 QHash<int, int> syncMap;
333 QList<int> slotIndexes;
334 for(int i = 0; i < meta->methodCount(); i++) {
335 if(meta->method(i).methodType() == QMetaMethod::Slot)
339 QMetaMethod signal, slot;
341 for(int signalIdx = 0; signalIdx < meta->methodCount(); signalIdx++) {
342 signal = meta->method(signalIdx);
343 if(signal.methodType() != QMetaMethod::Signal)
347 foreach(int slotIdx, slotIndexes) {
348 slot = meta->method(slotIdx);
349 if(methodsMatch(signal, slot)) {
355 slotIndexes.removeAt(slotIndexes.indexOf(matchIdx));
356 syncMap[signalIdx] = matchIdx;
360 Q_ASSERT(_classInfo[meta]->syncMap.isEmpty());
361 _classInfo[meta]->syncMap = syncMap;
364 const QHash<int,int> &SignalProxy::syncMap(QObject *obj) {
365 Q_ASSERT(_classInfo.contains(obj->metaObject()));
366 if(_classInfo[obj->metaObject()]->syncMap.isEmpty())
368 return _classInfo[obj->metaObject()]->syncMap;
371 void SignalProxy::createClassInfo(QObject *obj) {
372 if(!_classInfo.contains(obj->metaObject()))
373 _classInfo[obj->metaObject()] = new ClassInfo();
376 bool SignalProxy::attachSignal(QObject* sender, const char* signal, const QByteArray& sigName) {
377 const QMetaObject* meta = sender->metaObject();
378 QByteArray sig(meta->normalizedSignature(signal).mid(1));
379 int methodId = meta->indexOfMethod(sig.constData());
380 if(methodId == -1 || meta->method(methodId).methodType() != QMetaMethod::Signal) {
381 qWarning() << "SignalProxy::attachSignal(): No such signal" << signal;
385 createClassInfo(sender);
388 if(_relayHash.contains(sender))
389 relay = _relayHash[sender];
391 relay = _relayHash[sender] = new SignalRelay(this, sender);
393 relay->attachSignal(methodId, sigName);
399 bool SignalProxy::attachSlot(const QByteArray& sigName, QObject* recv, const char* slot) {
400 const QMetaObject* meta = recv->metaObject();
401 int methodId = meta->indexOfMethod(meta->normalizedSignature(slot).mid(1));
402 if(methodId == -1 || meta->method(methodId).methodType() == QMetaMethod::Method) {
403 qWarning() << "SignalProxy::attachSlot(): No such slot" << slot;
407 createClassInfo(recv);
409 QByteArray funcName = QMetaObject::normalizedSignature(sigName.constData());
410 _attachedSlots.insert(funcName, qMakePair(recv, methodId));
412 QObject::disconnect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
413 QObject::connect(recv, SIGNAL(destroyed()), this, SLOT(detachSender()));
417 void SignalProxy::synchronize(QObject *obj) {
418 if(proxyMode() == Server)
419 return synchronizeAsMaster(obj);
421 return synchronizeAsSlave(obj);
424 void SignalProxy::synchronizeAsMaster(QObject *sender) {
425 createClassInfo(sender);
428 if(_relayHash.contains(sender))
429 relay = _relayHash[sender];
431 relay = _relayHash[sender] = new SignalRelay(this, sender);
433 relay->setSynchronize(true);
435 if(sender->metaObject()->indexOfSignal(QMetaObject::normalizedSignature("renameObject(QString, QString)")) != -1)
436 connect(sender, SIGNAL(renameObject(QString, QString)), this, SLOT(objectRenamed(QString, QString)));
438 QByteArray className(sender->metaObject()->className());
439 _syncSlave[className][sender->objectName()] = sender;
441 setInitialized(sender);
444 void SignalProxy::synchronizeAsSlave(QObject *receiver) {
445 QByteArray className(receiver->metaObject()->className());
446 _syncSlave[className][receiver->objectName()] = receiver;
448 createClassInfo(receiver);
450 requestInit(receiver);
453 void SignalProxy::setInitialized(QObject *obj) {
454 QMetaObject::invokeMethod(obj, "setInitialized");
457 bool SignalProxy::initialized(QObject *obj) {
459 if(!QMetaObject::invokeMethod(obj, "initialized", Q_RETURN_ARG(bool, init)))
464 void SignalProxy::requestInit(QObject *obj) {
465 if(proxyMode() == Server || initialized(obj))
469 params << obj->metaObject()->className()
470 << obj->objectName();
471 dispatchSignal((int)InitRequest, params);
474 void SignalProxy::detachSender() {
475 // this is a slot so we can bypass the QueuedConnection
476 // and if someone is forcing direct connection in a multithreaded environment he's just nuts...
477 _detachSignals(sender());
478 _detachSlots(sender());
481 // detachObject/Signals/Slots() can be called as a result of an incoming call
482 // this might destroy our the iterator used for delivery
483 // thus we wrap the actual disconnection by using QueuedConnections
484 void SignalProxy::detachObject(QObject* obj) {
489 void SignalProxy::detachSignals(QObject* sender) {
490 QMetaObject::invokeMethod(this, "_detachSignals",
491 Qt::QueuedConnection,
492 Q_ARG(QObject*, sender));
495 void SignalProxy::detachSlots(QObject* receiver) {
496 QMetaObject::invokeMethod(this, "_detachSlots",
497 Qt::QueuedConnection,
498 Q_ARG(QObject*, receiver));
501 void SignalProxy::_detachSignals(QObject* sender) {
502 if(!_relayHash.contains(sender))
504 _relayHash.take(sender)->deleteLater();
507 void SignalProxy::_detachSlots(QObject* receiver) {
508 SlotHash::iterator slotIter = _attachedSlots.begin();
509 while(slotIter != _attachedSlots.end()) {
510 if(slotIter.value().first == receiver) {
511 slotIter = _attachedSlots.erase(slotIter);
517 void SignalProxy::dispatchSignal(QIODevice *receiver, const QVariant &identifier, const QVariantList ¶ms) {
518 QVariantList packedFunc;
519 packedFunc << identifier;
520 packedFunc << params;
521 writeDataToDevice(receiver, QVariant(packedFunc));
524 void SignalProxy::dispatchSignal(const QVariant &identifier, const QVariantList ¶ms) {
525 // yes I know we have a little code duplication here... it's for the sake of performance
526 QVariantList packedFunc;
527 packedFunc << identifier;
528 packedFunc << params;
529 foreach(QIODevice* dev, _peerByteCount.keys())
530 writeDataToDevice(dev, QVariant(packedFunc));
533 void SignalProxy::receivePeerSignal(QIODevice *sender, const QVariant &packedFunc) {
534 QVariantList params(packedFunc.toList());
536 QVariant call = params.takeFirst();
537 if(call.type() != QVariant::Int)
538 return handleSignal(call.toByteArray(), params);
540 switch(call.toInt()) {
542 return handleSync(params);
544 return handleInitRequest(sender, params);
546 return handleInitData(sender, params);
548 qWarning() << "received undefined CallType" << call.toInt();
553 void SignalProxy::handleSync(QVariantList params) {
554 if(params.count() < 3) {
555 qWarning() << "received invalid Sync call" << params;
559 QByteArray className =params.takeFirst().toByteArray();
560 QString objectName = params.takeFirst().toString();
561 int signalId = params.takeFirst().toInt();
563 if(!_syncSlave.contains(className) || !_syncSlave[className].contains(objectName)) {
564 qWarning() << "no registered receiver:" << className << objectName << "for Sync call" << signalId << params;
568 QObject *receiver = _syncSlave[className][objectName];
569 if(!syncMap(receiver).contains(signalId)) {
570 qWarning() << "received Sync Call with invalid SignalId" << className << objectName << signalId;
572 int slotId = syncMap(receiver)[signalId];
573 if(!invokeSlot(receiver, slotId, params))
574 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", methodName(receiver, slotId).constData());
577 void SignalProxy::handleInitRequest(QIODevice *sender, const QVariantList ¶ms) {
578 if(params.count() != 2) {
579 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
584 QByteArray className(params[0].toByteArray());
585 QString objectName(params[1].toString());
587 if(!_syncSlave.contains(className)) {
588 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
593 if(!_syncSlave[className].contains(objectName)) {
594 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
595 << className << objectName;
599 QObject *obj = _syncSlave[className][objectName];
601 QVariantList params_;
602 params_ << obj->metaObject()->className()
606 dispatchSignal(sender, (int)InitData, params_);
609 void SignalProxy::handleInitData(QIODevice *sender, const QVariantList ¶ms) {
611 if(params.count() != 3) {
612 qWarning() << "SignalProxy::handleInitRequest() received initRequest with invalid param Count:"
617 QByteArray className(params[0].toByteArray());
618 QString objectName(params[1].toString());
619 QVariantMap propertyMap(params[2].toMap());
621 if(!_syncSlave.contains(className)) {
622 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:"
627 if(!_syncSlave[className].contains(objectName)) {
628 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:"
629 << className << objectName;
633 QObject *obj = _syncSlave[className][objectName];
634 setInitData(obj, propertyMap);
637 void SignalProxy::handleSignal(const QByteArray &funcName, const QVariantList ¶ms) {
640 SlotHash::const_iterator slot = _attachedSlots.constFind(funcName);
641 while(slot != _attachedSlots.constEnd() && slot.key() == funcName) {
642 receiver = (*slot).first;
643 methodId = (*slot).second;
644 if(!invokeSlot(receiver, methodId, params))
645 qWarning("SignalProxy::handleSignal(): invokeMethod for \"%s\" failed ", methodName(receiver, methodId).constData());
650 bool SignalProxy::invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms) {
651 int numParams = argTypes(receiver, methodId).count();
652 QGenericArgument args[9];
653 for(int i = 0; i < numParams; i++)
654 args[i] = QGenericArgument(params[i].typeName(), params[i].constData());
655 return QMetaObject::invokeMethod(receiver, methodName(receiver, methodId), args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8]);
658 void SignalProxy::dataAvailable() {
659 // yet again. it's a private slot. no need for checks.
660 QIODevice* ioDev = qobject_cast<QIODevice* >(sender());
662 while(readDataFromDevice(ioDev, _peerByteCount[ioDev], var))
663 receivePeerSignal(ioDev, var);
666 void SignalProxy::writeDataToDevice(QIODevice *dev, const QVariant &item) {
667 QAbstractSocket* sock = qobject_cast<QAbstractSocket*>(dev);
668 if(!dev->isOpen() || (sock && sock->state()!=QAbstractSocket::ConnectedState)) {
669 qWarning("SignalProxy: Can't call on a closed device");
673 QDataStream out(&block, QIODevice::WriteOnly);
674 out.setVersion(QDataStream::Qt_4_2);
675 out << (quint32)0 << item;
676 out.device()->seek(0);
677 out << (quint32)(block.size() - sizeof(quint32));
681 bool SignalProxy::readDataFromDevice(QIODevice *dev, quint32 &blockSize, QVariant &item) {
683 in.setVersion(QDataStream::Qt_4_2);
686 if(dev->bytesAvailable() < (int)sizeof(quint32)) return false;
690 if(dev->bytesAvailable() < blockSize)
697 bool SignalProxy::methodsMatch(const QMetaMethod &signal, const QMetaMethod &slot) const {
698 // if we don't even have the same basename it's a sure NO
699 if(methodBaseName(signal) != methodBaseName(slot))
702 // are the signatures compatible?
703 if(!QObject::staticMetaObject.checkConnectArgs(signal.signature(), slot.signature()))
706 // we take an educated guess if the signals and slots match
707 QString signalsuffix = ::methodName(signal).mid(QString(::methodName(signal)).lastIndexOf(QRegExp("[A-Z]"))).toLower();
708 QString slotprefix = ::methodName(slot).left(QString(::methodName(slot)).indexOf(QRegExp("[A-Z]"))).toLower();
710 uint sizediff = qAbs(slotprefix.size() - signalsuffix.size());
711 int ratio = editingDistance(slotprefix, signalsuffix) - sizediff;
715 QString SignalProxy::methodBaseName(const QMetaMethod &method) {
716 QString methodname = QString(method.signature()).section("(", 0, 0);
718 // determine where we have to chop:
719 if(method.methodType() == QMetaMethod::Slot) {
720 // we take evertyhing from the first uppercase char if it's slot
721 methodname = methodname.mid(methodname.indexOf(QRegExp("[A-Z]")));
723 // and if it's a signal we discard everything from the last uppercase char
724 methodname = methodname.left(methodname.lastIndexOf(QRegExp("[A-Z]")));
727 methodname[0] = methodname[0].toUpper();
732 QVariantMap SignalProxy::initData(QObject *obj) const {
733 QVariantMap properties;
735 const QMetaObject* meta = obj->metaObject();
737 // we collect data from properties
738 for(int i = 0; i < meta->propertyCount(); i++) {
739 QMetaProperty prop = meta->property(i);
740 properties[QString(prop.name())] = prop.read(obj);
743 // ...as well as methods, which have names starting with "init"
744 for(int i = 0; i < meta->methodCount(); i++) {
745 QMetaMethod method = meta->method(i);
746 QString methodname(::methodName(method));
747 if(!methodname.startsWith("init") || methodname.startsWith("initSet"))
750 QVariant value = QVariant(QVariant::nameToType(method.typeName()));
751 QGenericReturnArgument genericvalue = QGenericReturnArgument(method.typeName(), &value);
752 QMetaObject::invokeMethod(obj, methodname.toAscii(), genericvalue);
754 properties[methodBaseName(method)] = value;
755 // qDebug() << ">>> SYNC:" << methodBaseName(method) << value;
758 // properties["Payload"] = QByteArray(10000000, 'a'); // for testing purposes
762 void SignalProxy::setInitData(QObject *obj, const QVariantMap &properties) {
766 const QMetaObject *meta = obj->metaObject();
768 QVariantMap::const_iterator iterator = properties.constBegin();
769 while(iterator != properties.constEnd()) {
770 QString name = iterator.key();
771 int propertyIndex = meta->indexOfProperty(name.toAscii());
773 if(propertyIndex == -1 || !meta->property(propertyIndex).isWritable())
774 setInitValue(obj, name, iterator.value());
776 obj->setProperty(name.toAscii(), iterator.value());
777 // qDebug() << "<<< SYNC:" << name << iterator.value();
783 bool SignalProxy::setInitValue(QObject *obj, const QString &property, const QVariant &value) {
784 QString handlername = QString("initSet") + property;
785 handlername[7] = handlername[7].toUpper();
786 QGenericArgument param(value.typeName(), value.constData());
787 return QMetaObject::invokeMethod(obj, handlername.toAscii(), param);
790 void SignalProxy::dumpProxyStats() {
792 if(proxyMode() == Server)
798 foreach(SignalRelay *relay, _relayHash.values())
799 sigCount += relay->sigCount();
802 foreach(ObjectId oid, _syncSlave.values())
803 slaveCount += oid.count();
806 qDebug() << " Proxy Mode:" << mode;
807 qDebug() << "attached sending Objects:" << _relayHash.count();
808 qDebug() << " number of Signals:" << sigCount;
809 qDebug() << " attached Slots:" << _attachedSlots.count();
810 qDebug() << " number of synced Slaves:" << slaveCount;
811 qDebug() << "number of Classes cached:" << _classInfo.count();