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-rw-r--r--src/dbus/qdbusconnection.cpp45
-rw-r--r--src/dbus/qdbusconnection_p.h4
-rw-r--r--src/dbus/qdbusconnectionmanager_p.h2
-rw-r--r--src/dbus/qdbusintegrator.cpp33
-rw-r--r--src/dbus/qdbusthreaddebug_p.h2
5 files changed, 79 insertions, 7 deletions
diff --git a/src/dbus/qdbusconnection.cpp b/src/dbus/qdbusconnection.cpp
index e9196173ad..0f2d799b92 100644
--- a/src/dbus/qdbusconnection.cpp
+++ b/src/dbus/qdbusconnection.cpp
@@ -38,6 +38,7 @@
#include <qdebug.h>
#include <qcoreapplication.h>
#include <qstringlist.h>
+#include <qtimer.h>
#include <qthread.h>
#include "qdbusconnectioninterface.h"
@@ -59,6 +60,24 @@ QT_BEGIN_NAMESPACE
Q_GLOBAL_STATIC(QDBusConnectionManager, _q_manager)
+// can be replaced with a lambda in Qt 5.7
+class QDBusConnectionDispatchEnabler : public QObject
+{
+ Q_OBJECT
+ QDBusConnectionPrivate *con;
+public:
+ QDBusConnectionDispatchEnabler(QDBusConnectionPrivate *con) : con(con) {}
+
+public slots:
+ void execute()
+ {
+ con->setDispatchEnabled(true);
+ if (!con->ref.deref())
+ con->deleteLater();
+ deleteLater();
+ }
+};
+
struct QDBusConnectionManager::ConnectionRequestData
{
enum RequestType {
@@ -74,6 +93,8 @@ struct QDBusConnectionManager::ConnectionRequestData
const QString *name;
QDBusConnectionPrivate *result;
+
+ bool suspendedDelivery;
};
QDBusConnectionPrivate *QDBusConnectionManager::busConnection(QDBusConnection::BusType type)
@@ -84,6 +105,10 @@ QDBusConnectionPrivate *QDBusConnectionManager::busConnection(QDBusConnection::B
if (!qdbus_loadLibDBus())
return 0;
+ // we'll start in suspended delivery mode if we're in the main thread
+ // (the event loop will resume delivery)
+ bool suspendedDelivery = qApp && qApp->thread() == QThread::currentThread();
+
QMutexLocker lock(&defaultBusMutex);
if (defaultBuses[type])
return defaultBuses[type];
@@ -91,7 +116,7 @@ QDBusConnectionPrivate *QDBusConnectionManager::busConnection(QDBusConnection::B
QString name = QStringLiteral("qt_default_session_bus");
if (type == QDBusConnection::SystemBus)
name = QStringLiteral("qt_default_system_bus");
- return defaultBuses[type] = connectToBus(type, name);
+ return defaultBuses[type] = connectToBus(type, name, suspendedDelivery);
}
QDBusConnectionPrivate *QDBusConnectionManager::connection(const QString &name) const
@@ -169,14 +194,22 @@ void QDBusConnectionManager::run()
moveToThread(Q_NULLPTR);
}
-QDBusConnectionPrivate *QDBusConnectionManager::connectToBus(QDBusConnection::BusType type, const QString &name)
+QDBusConnectionPrivate *QDBusConnectionManager::connectToBus(QDBusConnection::BusType type, const QString &name,
+ bool suspendedDelivery)
{
ConnectionRequestData data;
data.type = ConnectionRequestData::ConnectToStandardBus;
data.busType = type;
data.name = &name;
+ data.suspendedDelivery = suspendedDelivery;
emit connectionRequested(&data);
+ if (suspendedDelivery) {
+ data.result->ref.ref();
+ QDBusConnectionDispatchEnabler *o = new QDBusConnectionDispatchEnabler(data.result);
+ QTimer::singleShot(0, o, SLOT(execute()));
+ o->moveToThread(qApp->thread()); // qApp was checked in the caller
+ }
return data.result;
}
@@ -186,6 +219,7 @@ QDBusConnectionPrivate *QDBusConnectionManager::connectToBus(const QString &addr
data.type = ConnectionRequestData::ConnectToBusByAddress;
data.busAddress = &address;
data.name = &name;
+ data.suspendedDelivery = false;
emit connectionRequested(&data);
return data.result;
@@ -197,6 +231,7 @@ QDBusConnectionPrivate *QDBusConnectionManager::connectToPeer(const QString &add
data.type = ConnectionRequestData::ConnectToPeerByAddress;
data.busAddress = &address;
data.name = &name;
+ data.suspendedDelivery = false;
emit connectionRequested(&data);
return data.result;
@@ -252,6 +287,8 @@ void QDBusConnectionManager::executeConnectionRequest(QDBusConnectionManager::Co
// will lock in QDBusConnectionPrivate::connectRelay()
d->setConnection(c, error);
d->createBusService();
+ if (data->suspendedDelivery)
+ d->setDispatchEnabled(false);
}
}
@@ -456,7 +493,7 @@ QDBusConnection QDBusConnection::connectToBus(BusType type, const QString &name)
QDBusConnectionPrivate *d = 0;
return QDBusConnection(d);
}
- return QDBusConnection(_q_manager()->connectToBus(type, name));
+ return QDBusConnection(_q_manager()->connectToBus(type, name, false));
}
/*!
@@ -1232,4 +1269,6 @@ QByteArray QDBusConnection::localMachineId()
QT_END_NAMESPACE
+#include "qdbusconnection.moc"
+
#endif // QT_NO_DBUS
diff --git a/src/dbus/qdbusconnection_p.h b/src/dbus/qdbusconnection_p.h
index 2df7a49966..f030a3ff8c 100644
--- a/src/dbus/qdbusconnection_p.h
+++ b/src/dbus/qdbusconnection_p.h
@@ -169,6 +169,7 @@ public:
// typedefs
typedef QMultiHash<int, Watcher> WatcherHash;
typedef QHash<int, DBusTimeout *> TimeoutHash;
+ typedef QVector<QDBusMessage> PendingMessageList;
typedef QMultiHash<QString, SignalHook> SignalHookHash;
typedef QHash<QString, QDBusMetaObject* > MetaObjectHash;
@@ -191,6 +192,7 @@ public:
~QDBusConnectionPrivate();
void createBusService();
+ void setDispatchEnabled(bool enable);
void setPeer(DBusConnection *connection, const QDBusErrorInternal &error);
void setConnection(DBusConnection *connection, const QDBusErrorInternal &error);
void setServer(QDBusServer *object, DBusServer *server, const QDBusErrorInternal &error);
@@ -308,6 +310,7 @@ public:
};
WatcherHash watchers;
TimeoutHash timeouts;
+ PendingMessageList pendingMessages;
// the master lock protects our own internal state
QReadWriteLock lock;
@@ -322,6 +325,7 @@ public:
PendingCallList pendingCalls;
bool anonymousAuthenticationAllowed;
+ bool dispatchEnabled; // protected by the dispatch lock, not the main lock
public:
// static methods
diff --git a/src/dbus/qdbusconnectionmanager_p.h b/src/dbus/qdbusconnectionmanager_p.h
index 3f815fdcd7..c0ab48e4ee 100644
--- a/src/dbus/qdbusconnectionmanager_p.h
+++ b/src/dbus/qdbusconnectionmanager_p.h
@@ -67,7 +67,7 @@ public:
QDBusConnectionPrivate *connection(const QString &name) const;
void removeConnection(const QString &name);
void setConnection(const QString &name, QDBusConnectionPrivate *c);
- QDBusConnectionPrivate *connectToBus(QDBusConnection::BusType type, const QString &name);
+ QDBusConnectionPrivate *connectToBus(QDBusConnection::BusType type, const QString &name, bool suspendedDelivery);
QDBusConnectionPrivate *connectToBus(const QString &address, const QString &name);
QDBusConnectionPrivate *connectToPeer(const QString &address, const QString &name);
diff --git a/src/dbus/qdbusintegrator.cpp b/src/dbus/qdbusintegrator.cpp
index c465706913..f6221d51b6 100644
--- a/src/dbus/qdbusintegrator.cpp
+++ b/src/dbus/qdbusintegrator.cpp
@@ -496,6 +496,11 @@ bool QDBusConnectionPrivate::handleMessage(const QDBusMessage &amsg)
if (!ref.load())
return false;
+ if (!dispatchEnabled && !QDBusMessagePrivate::isLocal(amsg)) {
+ // queue messages only, we'll handle them later
+ pendingMessages << amsg;
+ return amsg.type() == QDBusMessage::MethodCallMessage;
+ }
switch (amsg.type()) {
case QDBusMessage::SignalMessage:
@@ -690,6 +695,20 @@ static int findSlot(const QMetaObject *mo, const QByteArray &name, int flags,
return -1;
}
+/*!
+ \internal
+ Enables or disables the delivery of incoming method calls and signals. If
+ \a enable is true, this will also cause any queued, pending messages to be
+ delivered.
+ */
+void QDBusConnectionPrivate::setDispatchEnabled(bool enable)
+{
+ QDBusDispatchLocker locker(SetDispatchEnabledAction, this);
+ dispatchEnabled = enable;
+ if (enable)
+ emit dispatchStatusChanged();
+}
+
static QDBusCallDeliveryEvent * const DIRECT_DELIVERY = (QDBusCallDeliveryEvent *)1;
QDBusCallDeliveryEvent* QDBusConnectionPrivate::prepareReply(QDBusConnectionPrivate *target,
@@ -946,7 +965,8 @@ QDBusConnectionPrivate::QDBusConnectionPrivate(QObject *p)
: QObject(p), ref(1), capabilities(0), mode(InvalidMode), busService(0),
dispatchLock(QMutex::Recursive), connection(0),
rootNode(QString(QLatin1Char('/'))),
- anonymousAuthenticationAllowed(false)
+ anonymousAuthenticationAllowed(false),
+ dispatchEnabled(true)
{
static const bool threads = q_dbus_threads_init_default();
if (::isDebugging == -1)
@@ -1066,8 +1086,17 @@ void QDBusConnectionPrivate::timerEvent(QTimerEvent *e)
void QDBusConnectionPrivate::doDispatch()
{
QDBusDispatchLocker locker(DoDispatchAction, this);
- if (mode == ClientMode || mode == PeerMode)
+ if (mode == ClientMode || mode == PeerMode) {
while (q_dbus_connection_dispatch(connection) == DBUS_DISPATCH_DATA_REMAINS) ;
+ if (dispatchEnabled && !pendingMessages.isEmpty()) {
+ // dispatch previously queued messages
+ PendingMessageList::Iterator it = pendingMessages.begin();
+ PendingMessageList::Iterator end = pendingMessages.end();
+ for ( ; it != end; ++it)
+ handleMessage(qMove(*it));
+ pendingMessages.clear();
+ }
+ }
}
void QDBusConnectionPrivate::socketRead(int fd)
diff --git a/src/dbus/qdbusthreaddebug_p.h b/src/dbus/qdbusthreaddebug_p.h
index eace25478d..420f062615 100644
--- a/src/dbus/qdbusthreaddebug_p.h
+++ b/src/dbus/qdbusthreaddebug_p.h
@@ -83,7 +83,7 @@ enum ThreadAction {
HandleObjectCallPostEventAction = 22,
HandleObjectCallSemaphoreAction = 23,
DoDispatchAction = 24,
- // unused: 25,
+ SetDispatchEnabledAction = 25,
MessageResultReceivedAction = 26,
ActivateSignalAction = 27,
PendingCallBlockAction = 28,
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-09 12:48:00 +0000