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Always return early if no signal is connected

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And simply emit the signal spy and tracing callbacks in
that code path as well.

Change-Id: I17f65055c7044caf1be58fac94bb7fe3487f3060
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
This commit is contained in:
Lars Knoll 2019-01-04 14:55:28 +01:00
parent 1d1e801cba
commit 88a2a746b7
1 changed files with 8 additions and 13 deletions
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21
src/corelib/kernel/qobject.cpp
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@ -3668,12 +3668,14 @@ void QMetaObject::activate(QObject *sender, int signalOffset, int local_signal_i
Q_TRACE(QMetaObject_activate_end_declarative_signal, sender, signal_index);
}
if (!sender->d_func()->isSignalConnected(signal_index, /*checkDeclarative =*/ false)
&& !qt_signal_spy_callback_set.signal_begin_callback
&& !qt_signal_spy_callback_set.signal_end_callback
&& !Q_TRACE_ENABLED(QMetaObject_activate_begin_signal)
&& !Q_TRACE_ENABLED(QMetaObject_activate_end_signal)) {
// The possible declarative connection is done, and nothing else is connected, so:
if (!sender->d_func()->isSignalConnected(signal_index, /*checkDeclarative =*/ false)) {
// The possible declarative connection is done, and nothing else is connected
if (qt_signal_spy_callback_set.signal_begin_callback != nullptr)
qt_signal_spy_callback_set.signal_begin_callback(sender, signal_index, argv);
Q_TRACE(QMetaObject_activate_begin_signal, sender, signal_index);
Q_TRACE(QMetaObject_activate_end_signal, sender, signal_index);
if (qt_signal_spy_callback_set.signal_end_callback != nullptr)
qt_signal_spy_callback_set.signal_end_callback(sender, signal_index);
return;
}
@ -3711,13 +3713,6 @@ void QMetaObject::activate(QObject *sender, int signalOffset, int local_signal_i
QObjectConnectionListVector *operator->() const { return connectionLists; }
};
ConnectionListsRef connectionLists = sender->d_func()->connectionLists;
if (!connectionLists.connectionLists) {
locker.unlock();
if (qt_signal_spy_callback_set.signal_end_callback != 0)
qt_signal_spy_callback_set.signal_end_callback(sender, signal_index);
Q_TRACE(QMetaObject_activate_end_signal, sender, signal_index);
return;
}
const QObjectPrivate::ConnectionList *list;
if (signal_index < connectionLists->count())