diff options
Diffstat (limited to 'src/corelib/kernel/qobject.cpp')
| -rw-r--r-- | src/corelib/kernel/qobject.cpp | 66 |
1 files changed, 44 insertions, 22 deletions
diff --git a/src/corelib/kernel/qobject.cpp b/src/corelib/kernel/qobject.cpp index 9f803fa..cfd8493 100644 --- a/src/corelib/kernel/qobject.cpp +++ b/src/corelib/kernel/qobject.cpp @@ -58,6 +58,7 @@ #include <qsemaphore.h> #include <private/qorderedmutexlocker_p.h> +#include <private/qmutexpool_p.h> #include <new> @@ -91,12 +92,35 @@ static int *queuedConnectionTypes(const QList<QByteArray> &typeNames) return types; } +QBasicAtomicPointer<QMutexPool> signalSlotMutexes = Q_BASIC_ATOMIC_INITIALIZER(0); +QBasicAtomicInt objectCount = Q_BASIC_ATOMIC_INITIALIZER(0); + +/** \internal + * mutex to be locked when accessing the connectionlists or the senders list + */ +static QMutex *signalSlotLock(const QObject *o) +{ + if (!signalSlotMutexes) { + QMutexPool *mp = new QMutexPool; + if (!signalSlotMutexes.testAndSetOrdered(0, mp)) { + delete mp; + } + } + return signalSlotMutexes->get(o); +} + extern "C" Q_CORE_EXPORT void qt_addObject(QObject *) { + objectCount.ref(); } extern "C" Q_CORE_EXPORT void qt_removeObject(QObject *) { + if(!objectCount.deref()) { + QMutexPool *old = signalSlotMutexes; + signalSlotMutexes.testAndSetAcquire(old, 0); + delete old; + } } QObjectPrivate::QObjectPrivate(int version) @@ -223,7 +247,7 @@ bool QObjectPrivate::isSender(const QObject *receiver, const char *signal) const int signal_index = q->metaObject()->indexOfSignal(signal); if (signal_index < 0) return false; - QMutexLocker locker(&threadData->mutex); + QMutexLocker locker(signalSlotLock(q)); if (connectionLists) { if (signal_index < connectionLists->count()) { const ConnectionList &connectionList = connectionLists->at(signal_index); @@ -245,7 +269,7 @@ QObjectList QObjectPrivate::receiverList(const char *signal) const int signal_index = q->metaObject()->indexOfSignal(signal); if (signal_index < 0) return returnValue; - QMutexLocker locker(&threadData->mutex); + QMutexLocker locker(signalSlotLock(q)); if (connectionLists) { if (signal_index < connectionLists->count()) { const ConnectionList &connectionList = connectionLists->at(signal_index); @@ -263,7 +287,7 @@ QObjectList QObjectPrivate::receiverList(const char *signal) const QObjectList QObjectPrivate::senderList() const { QObjectList returnValue; - QMutexLocker locker(&threadData->mutex); + QMutexLocker locker(signalSlotLock(q_func())); for (int i = 0; i < senders.count(); ++i) returnValue << senders.at(i)->sender; return returnValue; @@ -712,7 +736,7 @@ QObject::~QObject() emit destroyed(this); { - QMutexLocker locker(&d->threadData->mutex); + QMutexLocker locker(signalSlotLock(this)); // set ref to zero to indicate that this object has been deleted if (d->currentSender != 0) @@ -731,7 +755,7 @@ QObject::~QObject() continue; } - QMutex *m = &c->receiver->d_func()->threadData->mutex; + QMutex *m = signalSlotLock(c->receiver); bool needToUnlock = QOrderedMutexLocker::relock(locker.mutex(), m); c = connectionList[i]; if (c->receiver) @@ -755,7 +779,7 @@ QObject::~QObject() for (int i = 0; i < d->senders.count(); ) { QObjectPrivate::Connection *s = d->senders[i]; - QMutex *m = &s->sender->d_func()->threadData->mutex; + QMutex *m = signalSlotLock(s->sender); bool needToUnlock = QOrderedMutexLocker::relock(locker.mutex(), m); if (m < locker.mutex()) { if (i >= d->senders.count() || s != d->senders[i]) { @@ -765,11 +789,9 @@ QObject::~QObject() } } s->receiver = 0; - if (s->sender) { - QObjectConnectionListVector *senderLists = s->sender->d_func()->connectionLists; - if (senderLists) - senderLists->dirty = true; - } + QObjectConnectionListVector *senderLists = s->sender->d_func()->connectionLists; + if (senderLists) + senderLists->dirty = true; if (needToUnlock) m->unlock(); @@ -2254,7 +2276,7 @@ QObject *QObject::sender() const { Q_D(const QObject); - QMutexLocker(&d->threadData->mutex); + QMutexLocker(signalSlotLock(this)); if (!d->currentSender) return 0; @@ -2310,7 +2332,7 @@ int QObject::receivers(const char *signal) const } Q_D(const QObject); - QMutexLocker locker(&d->threadData->mutex); + QMutexLocker locker(signalSlotLock(this)); if (d->connectionLists) { if (signal_index < d->connectionLists->count()) { const QObjectPrivate::ConnectionList &connectionList = @@ -2757,8 +2779,8 @@ bool QMetaObject::connect(const QObject *sender, int signal_index, c->connectionType = type; c->argumentTypes = types; - QOrderedMutexLocker locker(&s->d_func()->threadData->mutex, - &r->d_func()->threadData->mutex); + QOrderedMutexLocker locker(signalSlotLock(sender), + signalSlotLock(receiver)); s->d_func()->addConnection(signal_index, c); r->d_func()->senders.append(c); @@ -2783,8 +2805,8 @@ bool QMetaObject::disconnect(const QObject *sender, int signal_index, QObject *s = const_cast<QObject *>(sender); QObject *r = const_cast<QObject *>(receiver); - QMutex *senderMutex = &s->d_func()->threadData->mutex; - QMutex *receiverMutex = r ? &r->d_func()->threadData->mutex : 0; + QMutex *senderMutex = signalSlotLock(sender); + QMutex *receiverMutex = receiver ? signalSlotLock(receiver) : 0; QOrderedMutexLocker locker(senderMutex, receiverMutex); QObjectConnectionListVector *connectionLists = s->d_func()->connectionLists; @@ -2804,7 +2826,7 @@ bool QMetaObject::disconnect(const QObject *sender, int signal_index, if (c->receiver && (r == 0 || (c->receiver == r && (method_index < 0 || c->method == method_index)))) { - QMutex *m = &c->receiver->d_func()->threadData->mutex; + QMutex *m = signalSlotLock(c->receiver); bool needToUnlock = false; if (!receiverMutex && senderMutex != m) { // need to relock this receiver and sender in the correct order @@ -2831,7 +2853,7 @@ bool QMetaObject::disconnect(const QObject *sender, int signal_index, if (c->receiver && (r == 0 || (c->receiver == r && (method_index < 0 || c->method == method_index)))) { - QMutex *m = &c->receiver->d_func()->threadData->mutex; + QMutex *m = signalSlotLock(c->receiver); bool needToUnlock = false; if (!receiverMutex && senderMutex != m) { // need to relock this receiver and sender in the correct order @@ -2972,7 +2994,7 @@ static void blocking_activate(QObject *sender, int signal, QObjectPrivate::Conne #else QSemaphore semaphore; queued_activate(sender, signal, c, argv, &semaphore); - QMutex *mutex = &QThreadData::get2(sender->thread())->mutex; + QMutex *mutex = signalSlotLock(sender); mutex->unlock(); semaphore.acquire(); mutex->lock(); @@ -2992,7 +3014,7 @@ void QMetaObject::activate(QObject *sender, int from_signal_index, int to_signal argv ? argv : empty_argv); } - QMutexLocker locker(&sender->d_func()->threadData->mutex); + QMutexLocker locker(signalSlotLock(sender)); QThreadData *currentThreadData = QThreadData::current(); QObjectConnectionListVector *connectionLists = sender->d_func()->connectionLists; @@ -3344,7 +3366,7 @@ void QObject::dumpObjectInfo() objectName().isEmpty() ? "unnamed" : objectName().toLocal8Bit().data()); Q_D(QObject); - QMutexLocker locker(&d->threadData->mutex); + QMutexLocker locker(signalSlotLock(this)); // first, look for connections where this object is the sender qDebug(" SIGNALS OUT"); |