qt5-qtbase/0537-QtDBus-finish-all-pending-call-with-error-if-disconn.patch
Rex Dieter b467b86bbf more goodies, FTBFS fixes
- pull in final/upstream fixes for QTBUG-51648,QTBUG-51649
- disable examples/tests in bootstrap mode
2016-05-06 13:29:21 -05:00

206 lines
8.5 KiB
Diff

From 9be4ee52021bbb3227611979319ab5e3106063b2 Mon Sep 17 00:00:00 2001
From: Weng Xuetian <wengxt@gmail.com>
Date: Thu, 3 Mar 2016 21:56:53 -0800
Subject: [PATCH 537/595] QtDBus: finish all pending call with error if
disconnected
libdbus will send a local signal if connection gets disconnected. When
this happens, end all pending calls with QDBusError::Disconnected.
Task-number: QTBUG-51649
Change-Id: I5c7d2a468bb5da746d0c0e53e458c1e376f186a9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
---
src/dbus/dbus_minimal_p.h | 2 ++
src/dbus/qdbusconnection_p.h | 3 ++
src/dbus/qdbusintegrator.cpp | 41 ++++++++++++++++++----
src/dbus/qdbusutil_p.h | 2 ++
.../dbus/qdbusconnection/tst_qdbusconnection.cpp | 21 +++++++++++
.../dbus/qdbusconnection/tst_qdbusconnection.h | 1 +
6 files changed, 64 insertions(+), 6 deletions(-)
diff --git a/src/dbus/dbus_minimal_p.h b/src/dbus/dbus_minimal_p.h
index f0a2954..8f25b24 100644
--- a/src/dbus/dbus_minimal_p.h
+++ b/src/dbus/dbus_minimal_p.h
@@ -99,9 +99,11 @@ typedef dbus_uint32_t dbus_bool_t;
/* dbus-shared.h */
#define DBUS_SERVICE_DBUS "org.freedesktop.DBus"
#define DBUS_PATH_DBUS "/org/freedesktop/DBus"
+#define DBUS_PATH_LOCAL "/org/freedesktop/DBus/Local"
#define DBUS_INTERFACE_DBUS "org.freedesktop.DBus"
#define DBUS_INTERFACE_INTROSPECTABLE "org.freedesktop.DBus.Introspectable"
#define DBUS_INTERFACE_PROPERTIES "org.freedesktop.DBus.Properties"
+#define DBUS_INTERFACE_LOCAL "org.freedesktop.DBus.Local"
#define DBUS_NAME_FLAG_ALLOW_REPLACEMENT 0x1 /**< Allow another service to become the primary owner if requested */
#define DBUS_NAME_FLAG_REPLACE_EXISTING 0x2 /**< Request to replace the current primary owner */
diff --git a/src/dbus/qdbusconnection_p.h b/src/dbus/qdbusconnection_p.h
index 565eb83..b733a68 100644
--- a/src/dbus/qdbusconnection_p.h
+++ b/src/dbus/qdbusconnection_p.h
@@ -260,6 +260,8 @@ private:
QString getNameOwnerNoCache(const QString &service);
+ void watchForDBusDisconnection();
+
void _q_newConnection(QDBusConnectionPrivate *newConnection);
protected:
@@ -279,6 +281,7 @@ private slots:
void serviceOwnerChangedNoLock(const QString &name, const QString &oldOwner, const QString &newOwner);
void registerServiceNoLock(const QString &serviceName);
void unregisterServiceNoLock(const QString &serviceName);
+ void handleDBusDisconnection();
signals:
void dispatchStatusChanged();
diff --git a/src/dbus/qdbusintegrator.cpp b/src/dbus/qdbusintegrator.cpp
index 3be775d..d0468f4 100644
--- a/src/dbus/qdbusintegrator.cpp
+++ b/src/dbus/qdbusintegrator.cpp
@@ -1121,6 +1121,12 @@ void QDBusConnectionPrivate::closeConnection()
rootNode.children.clear(); // free resources
}
+void QDBusConnectionPrivate::handleDBusDisconnection()
+{
+ while (!pendingCalls.isEmpty())
+ processFinishedCall(pendingCalls.first());
+}
+
void QDBusConnectionPrivate::checkThread()
{
Q_ASSERT(thread() == QDBusConnectionManager::instance());
@@ -1646,6 +1652,19 @@ void QDBusConnectionPrivate::handleSignal(const QDBusMessage& msg)
handleSignal(key, msg); // third try
}
+void QDBusConnectionPrivate::watchForDBusDisconnection()
+{
+ SignalHook hook;
+ // Initialize the hook for Disconnected signal
+ hook.service.clear(); // org.freedesktop.DBus.Local.Disconnected uses empty service name
+ hook.path = QDBusUtil::dbusPathLocal();
+ hook.obj = this;
+ hook.params << QMetaType::Void;
+ hook.midx = staticMetaObject.indexOfSlot("handleDBusDisconnection()");
+ Q_ASSERT(hook.midx != -1);
+ signalHooks.insert(QLatin1String("Disconnected:" DBUS_INTERFACE_LOCAL), hook);
+}
+
void QDBusConnectionPrivate::setServer(QDBusServer *object, DBusServer *s, const QDBusErrorInternal &error)
{
mode = ServerMode;
@@ -1711,6 +1730,8 @@ void QDBusConnectionPrivate::setPeer(DBusConnection *c, const QDBusErrorInternal
qDBusSignalFilter,
this, 0);
+ watchForDBusDisconnection();
+
QMetaObject::invokeMethod(this, "doDispatch", Qt::QueuedConnection);
}
@@ -1787,6 +1808,8 @@ void QDBusConnectionPrivate::setConnection(DBusConnection *dbc, const QDBusError
Q_ASSERT(hook.midx != -1);
signalHooks.insert(QLatin1String("NameOwnerChanged:" DBUS_INTERFACE_DBUS), hook);
+ watchForDBusDisconnection();
+
qDBusDebug() << this << ": connected successfully";
// schedule a dispatch:
@@ -1813,10 +1836,16 @@ void QDBusConnectionPrivate::processFinishedCall(QDBusPendingCallPrivate *call)
QDBusMessage &msg = call->replyMessage;
if (call->pending) {
- // decode the message
- DBusMessage *reply = q_dbus_pending_call_steal_reply(call->pending);
- msg = QDBusMessagePrivate::fromDBusMessage(reply, connection->capabilities);
- q_dbus_message_unref(reply);
+ // when processFinishedCall is called and pending call is not completed,
+ // it means we received disconnected signal from libdbus
+ if (q_dbus_pending_call_get_completed(call->pending)) {
+ // decode the message
+ DBusMessage *reply = q_dbus_pending_call_steal_reply(call->pending);
+ msg = QDBusMessagePrivate::fromDBusMessage(reply, connection->capabilities);
+ q_dbus_message_unref(reply);
+ } else {
+ msg = QDBusMessage::createError(QDBusError::Disconnected, QDBusUtil::disconnectedErrorMessage());
+ }
}
qDBusDebug() << connection << "got message reply:" << msg;
@@ -2116,8 +2145,8 @@ void QDBusConnectionPrivate::sendInternal(QDBusPendingCallPrivate *pcall, void *
pcall->pending = pending;
q_dbus_pending_call_set_notify(pending, qDBusResultReceived, pcall, 0);
- // DBus won't notify us when a peer disconnects so we need to track these ourselves
- if (mode == QDBusConnectionPrivate::PeerMode)
+ // DBus won't notify us when a peer disconnects or server terminates so we need to track these ourselves
+ if (mode == QDBusConnectionPrivate::PeerMode || mode == QDBusConnectionPrivate::ClientMode)
pendingCalls.append(pcall);
return;
diff --git a/src/dbus/qdbusutil_p.h b/src/dbus/qdbusutil_p.h
index 8f5ae92..f4ab9b9 100644
--- a/src/dbus/qdbusutil_p.h
+++ b/src/dbus/qdbusutil_p.h
@@ -155,6 +155,8 @@ namespace QDBusUtil
{ return QStringLiteral(DBUS_SERVICE_DBUS); }
inline QString dbusPath()
{ return QStringLiteral(DBUS_PATH_DBUS); }
+ inline QString dbusPathLocal()
+ { return QStringLiteral(DBUS_PATH_LOCAL); }
inline QString dbusInterface()
{
// it's the same string, but just be sure
diff --git a/tests/auto/dbus/qdbusconnection/tst_qdbusconnection.cpp b/tests/auto/dbus/qdbusconnection/tst_qdbusconnection.cpp
index e91f87d..f378091 100644
--- a/tests/auto/dbus/qdbusconnection/tst_qdbusconnection.cpp
+++ b/tests/auto/dbus/qdbusconnection/tst_qdbusconnection.cpp
@@ -1218,6 +1218,27 @@ void tst_QDBusConnection::callVirtualObjectLocal()
QCOMPARE(obj.replyArguments, subPathReply.arguments());
}
+void tst_QDBusConnection::pendingCallWhenDisconnected()
+{
+ if (!QCoreApplication::instance())
+ QSKIP("Test requires a QCoreApplication");
+
+ QDBusServer *server = new QDBusServer;
+ QDBusConnection con = QDBusConnection::connectToPeer(server->address(), "disconnect");
+ QTestEventLoop::instance().enterLoop(2);
+ QVERIFY(con.isConnected());
+ QDBusMessage message = QDBusMessage::createMethodCall("", "/", QString(), "method");
+ QDBusPendingCall reply = con.asyncCall(message);
+
+ delete server;
+
+ QTestEventLoop::instance().enterLoop(2);
+ QVERIFY(!con.isConnected());
+ QVERIFY(reply.isFinished());
+ QVERIFY(reply.isError());
+ QVERIFY(reply.error().type() == QDBusError::Disconnected);
+}
+
QString MyObject::path;
QString MyObjectWithoutInterface::path;
QString MyObjectWithoutInterface::interface;
diff --git a/tests/auto/dbus/qdbusconnection/tst_qdbusconnection.h b/tests/auto/dbus/qdbusconnection/tst_qdbusconnection.h
index a53ba32..720e484 100644
--- a/tests/auto/dbus/qdbusconnection/tst_qdbusconnection.h
+++ b/tests/auto/dbus/qdbusconnection/tst_qdbusconnection.h
@@ -121,6 +121,7 @@ private slots:
void registerVirtualObject();
void callVirtualObject();
void callVirtualObjectLocal();
+ void pendingCallWhenDisconnected();
public:
QString serviceName() const { return "org.qtproject.Qt.Autotests.QDBusConnection"; }
--
2.7.4