It was originally created to avoid allocating memory for the QString at
every turn, but we have QStringLiteral for that today. It has also
served a very good run by catching qatomic.h implementations that had
bad cv qualifications.
Change-Id: Id6d952b8cce363015ec2611d346b4cccedecf137
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
Blocking DBus calls have the potential to totally wreck user interactivity at
best (actions taking too long) and make things appear completely broken at worst
(the default timeout is 30 seconds, which is a huge amount of time, especially
if you get unfortunate and have a repeated blocking call).
Provide a warning when a call is found that takes too long, based on some preset
durations (200ms for the main thread, 500ms for other threads on the basis that
the main thread is generally more important).
Also provide configuration knobs for these environment variables, in miliseconds:
setting them to 0 will warn on all blocking DBus calls. Setting them to -1 (the
default, on release builds) will disable the warning.
[ChangeLog][QtDBus] Blocking calls that take a long time will now generate a
warning. The time taken may be tuned using the environment variables
Q_DBUS_BLOCKING_CALL_MAIN_THREAD_WARNING_MS and
Q_DBUS_BLOCKING_CALL_OTHER_THREAD_WARNING_MS. The value represents (in
milliseconds) how long before a blocking call is warned on. A value below zero
disables the warning, a value of zero will warn on all blocking calls.
Change-Id: I0ab4c34aa01670a154d794d9f2694b3235e789db
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Conflicts:
mkspecs/qnx-x86-qcc/qplatformdefs.h
src/corelib/global/qglobal.h
src/network/socket/qnativesocketengine_winrt.cpp
src/plugins/platforms/android/androidjniaccessibility.cpp
src/plugins/platforms/windows/qwindowswindow.cpp
Manually adjusted:
mkspecs/qnx-armle-v7-qcc/qplatformdefs.h
to include 9ce697f2d5
Thanks goes to Sergio for the qnx mkspecs adjustments.
Change-Id: I53b1fd6bc5bc884e5ee2c2b84975f58171a1cb8e
The trick of creating a copy is not thread-safe. I'd known this since
the moment I wrote that code, but thought "what could go wrong?".
Task-number: QTBUG-39285
Change-Id: If521d4a649c06e6a34926687e85623aa25cb4c35
Reviewed-by: David Faure <david.faure@kdab.com>
A disconnectSignal() call with a wrong signal name caused that hook
wasn't found and thus kept in QDBusConnectionPrivate::signalHooks
forever.
Change-Id: Id7cda225be7580529fc835b377636226abb229f9
Reviewed-by: Aaron McCarthy <mccarthy.aaron@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This change adds a new method to QDBusServer to allow anonymous
connections. This is part of the DBus API and was not yet possible
to use with QDBusServer. It is set in the newConnection callback
when a new client tries to connect.
Anonymous connections are enabled by default in DBus but not allowed
by default.
[ChangeLog][QtDBus][QDBusServer] Added method to QDBusServer to allow
anonymous client connections, even if the connecting client is not
authenticated as a user.
Change-Id: I984c9e634101ecd2e67bb25c8d12bb1071836fd3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
the diff -w for this commit is empty.
Started-by: Thiago Macieira <thiago.macieira@intel.com>
Change-Id: I77bb84e71c63ce75e0709e5b94bee18e3ce6ab9e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Unlike in regular connection to DBus server, we don't get pending call
notifies when a peer drops the connection in peer-to-peer mode.
Thus, we need to keep track of pending calls in such cases and get rid of
them in ~QDBusConnectionPrivate().
Change-Id: I83e20db0bc7b2ebf509c7fdb1382ffc7d0ede9d3
Done-with: Kalle Vahlman <kalle.vahlman@movial.com>
Reviewed-by: Daniele E. Domenichelli <daniele.domenichelli@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Partial revert of 3c6bb0ed8b and
57aed703d2.
When registering an object that was previously unregistered but not yet
garbage collected, the activeChildren count on the parent node was not
incremented, which could result in other registered objects disappearing
after a later unregisterObject.
Copying objects in the tree is not free, but it's not expensive enough
or used frequently enough to justify that error-prone logic. It's much
safer to simply remove objects immediately.
Change-Id: I3dc59c2ebd07b237518424fcd8ea7371a22d6d15
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Fixes race between QDBusConnectionPrivate::processFinishedCall()
releasing the mutex before emitting signals (using various members of
QDBusPendingCallPrivate) and deletion of the QDBusPendingCallPrivate
object through QDBusPendingCall::d's destructor (a member of type
QExplicitlySharedDataPointer<QDBusPendingCallPrivate>) leeds to
segmentation fault with CrashTest example on slow/single core
arm cpu).
Task-number: QTBUG-27809
Change-Id: I3590d74d1cfa5816ede764b50b83a7008ec780ff
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
First step to fix race condition about deleting QDBusPendingCallPrivate.
In a multithreaded application on a slow/single core cpu the following
race (and segmentation fault) can occur:
First thread A is running:
A: QDBusPendingReply<> reply = pi->asyncCallWithArgumentList(method, argumentList);
Then when the dbus answer arrives thread B will call:
B: QDBusConnectionPrivate::processFinishedCall()
B: ...
B: locker.unlock()
and runs until here, go on with thread A:
A: reply.waitForFinished();
A: QDBusPendingCallPrivate::waitForFinished()
A: {
A: QMutexLocker locker(&mutex);
A: if (replyMessage.type() != QDBusMessage::InvalidMessage)
A: return;
which returns immediately (mutex acquired, replyMessage alread set), now
reply goes out of scope (destructor called) and QDBusPendingCall::d's
destructor of type QExplicitlySharedDataPointer<QDBusPendingCallPrivate>
deletes the reference counted object QDBusPendingCallPrivate.
Now thread B continues, still in processFinishedCall()
B: if (call->watcherHelper)
B: call->watcherHelper->emitSignals(msg, call->sentMessage);
B:
B: if (msg.type() == QDBusMessage::ErrorMessage)
B: emit connection->callWithCallbackFailed(QDBusError(msg),
B: call->sentMessage);
accessing alread deleted object QDBusPendingCallPrivate via call->...
Fixed QDBusPendingCallPrivate deletion by proper reference counting
will be done in the next commit.
Task-number: QTBUG-27809
Change-Id: I15b3f0242471b62eaafadc763fb6a33339ff2fe1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
In QDBusConnectionPrivate::waitForFinished() pcall->pending was used
after the protection by pcall->mutex was released. A simultaneous
call to QDBusConnectionPrivate::processFinishedCall() was able
to reset pcall->pending to null before it was used for the
q_dbus_pending_call_block(pcall->pending) call.
Fixed by releasing (and setting to 0) of pcall->pending in
processFinishedCall() only in case no one is waiting yet, otherwise
release pcall->pending by the first thread waiting in waitForFinished().
There is still a race condition about deleting QDBusPendingCallPrivate
(too early) which will be fixed in the next two commits.
Task-number: QTBUG-27809
Change-Id: I040173810ad90653fe1bd1915f22d8dd70d47d8c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
If the connection failed, the DBusConnection object is null, but we
still add our QDBusConnectionPrivate to the global hash (maybe we
shouldn't). Both disconnectFromXXX functions check that they are
disconnecting a connection of the right type, but we never initialized
the type if the connection failed.
So simply make sure we initialize before handling the error state.
Task-number: QTBUG-27973
Change-Id: I96f4825ab1b71adf1b72caf4f72db41742b44a55
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
For instance, exporting an object with a slot like
QString complexMethod(const MyVariantMap& vars);
(even with a simple typedef QVariantMap MyVariantMap)
used to silently skip that method in the introspection.
Now it outputs:
generateInterfaceXml: Skipped method "complexMethod" : Invalid type in parameter list: MyVariantMap
Change-Id: I7964cfb63e973257ce1abe47b9625e361b2ad23f
Reviewed-by: Kevin Ottens <kevin.ottens@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This has been broken forever, just like generic signal
disconnection. It didn't use to show up before because in Qt 4,
QObject's destructor would not call disconnectNotify().
Just like in the previous commit, we need to verify whether the signal
was disconnected from the last receiver. A wildcard disconnect might
be disconnecting only from a specific receiver.
Task-number: QTBUG-29498
Change-Id: I0790128ea878fdf3ac563c99d96c6aa7d270e9a3
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
The dbus_watch_get_fd function was deprecated in D-Bus 1.2 (technically,
in 1.1.1, but that was a development release) because it had a bad name.
Sockets on Windows have file descriptors, but they are not shared from
the same pool as the CRT library's file descriptors.
This commit raises the minimum required version of D-Bus to 1.2. This is
the first requirement raise since this code was introduced in 2006. For
some reason, the D-Bus 1.2.0 release seems to be missing, but 1.2.1 was
released on 04-Apr-2008. That's ancient enough for all distributions
Qt 5 is supposed to run on.
Change-Id: Ia6bbc137fffbb27c77290ed3e32d3380f0ae3c54
Reviewed-by: Lorn Potter <lorn.potter@jollamobile.com>
Change-Id: I18697037db742d38874c8a95df12c189ccc51068
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
Reviewed-by: Lorn Potter <lorn.potter@jollamobile.com>
This replaces the implementation from ac9ab9703f.
If the number of active children drops to zero, we know we can simply
delete the vector of children. We know none that might be there are
active.
If the number is not zero, but is considerably smaller than the vector
size, we can shrink the vector by reordering the elements, skipping the
inactive ones.
We use qMove, which expands to std::move on C++11, but a regular copy on
C++98.
Change-Id: I2e74446081f91fbd698425b08910fbda4746d673
Reviewed-by: David Faure (KDE) <faure@kde.org>
The new member variable activeChildren shall contain the number of
direct children that are active. This number differs from
children.count() because the vector may contain empty entries that
haven't been garbage-collected yet (obj == NULL and activeChildren ==
0).
When this count drops to zero, we know we can simply erase the vector of
children.
Change-Id: Ia20604d3fac852ea4a6e8862d934fbb936fa5e18
Reviewed-by: David Faure (KDE) <faure@kde.org>
The current implementation is a loop. We need it to be recursive so that
we can execute more operations when unwinding. This will be necessary
in the next commit.
Change-Id: Ia3c98fed0719cede0a0d92d3e343cf016ec7baf2
Reviewed-by: David Faure (KDE) <faure@kde.org>
Fixes performance issues in apps which register and deregister objects
very frequently (like nepomukstorage).
Change-Id: Ib4ce8d65868f0e26cd45f1053e4b2f4c13528cfa
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The dbus_get_version function was introduced in 1.2, so we'd need to
detect pre-1.2 by the absence of the function. But if we're going to
detect the presence or absence of any function, we might as well do it
on dbus_connection_can_send_type, which is the function we wanted anyway.
Change-Id: I6e17a3a8f1382c6a489490084f6e3f61aa5a1947
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Those were using an inconsistent macro compared to the function
declaration in qdbusthreaddebug_p.h.
Change-Id: I3e77ba83ceedc99cb1f957fdfe318e34ab9c9628
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Change copyrights and license headers from Nokia to Digia
Change-Id: If1cc974286d29fd01ec6c19dd4719a67f4c3f00e
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
There's not much point in caching the result of qMetaTypeId<>,
because it's already internally memoised.
In addition, the code that initialised the static int caches wasn't
protected against concurrent access under the assumption that the
operations performed were thread-safe.
That is true for most of them, but not for the stores to the static ints,
which race against each other:
// Thread A // Thread B
r1 = initialized /*=false*/
r1 = initialized /*=false*/
r2 = qMetaTypeId<...>();
r2 = qMetaTypeId<...>();
message = r2; message = r2; // race, ditto for all other ints
To fix, turn the ints into inline functions that just call the respective
qMetaTypeId<>() function.
Change-Id: I5aa80c624872c3867232abc26ffdcde70cd54022
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
cpp files should include their own headers first (but below config.h)
Change-Id: I4115604aee3211118e2ecf604067f3559dbb9f4c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Replace them with std::lower_bound; this allows for deprecation of
qLowerBound.
Change-Id: I536e7338eb85ea6c7c1a5bf23121292767927e0b
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
Create a new QDBusConnectionPrivate for every new connection in
qDBusNewConnection instead of creating a single QDBusConnectionPrivate
in the QDBusServer constructor which gets assigned the latest connected
DBusConnection in qDBusNewConnection (and loses track on all previous
DBusConnections).
Also extend tst_QDBusConnection::registerObjectPeer() test with multiple
connections to the server.
Task-Number: 24921
Change-Id: I4341e8d48d464f3fe0a314a6ab14f848545d65a0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
There probably is a happens-before relation to all the writes of the bool elsewhere,
but the comment in QDBusPendingCallPrivate says waitingForFinsihed is one of the
variables protected by the mutex, so don't make every reader of the code re-establish
the safety (if indeed, it is safe) oneself again, but just wrap the access in a
mutex lock.
To be able to compile the mutex locking out of release builds, wrap the access
in a function. Make the function static _inline_ so compilers won't complain
about it being unused in release builds.
Change-Id: I914ce91e64e776450c697a3243b35716390a218c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
In QDBusConnectionPrivate::waitForFinished(), threads that see
pcall->waitingForFinished == true go to sleep on
pcall->waitForFinishedCondition, but there was no call to
waitForFinishedCondition.wakeAll() anywhere in the code, so add it.
Change-Id: I8d068dc0cc4f20786eb40fd7e2bb9840d8b70c7f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Unlike most other modules, QtDBus in its use of QVector also needs to
check if the item isn't null, which makes for some special changes.
Change-Id: Ia22ad2a6b26c9c34dc09ab882d81323a941d166a
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
The const char *-based API is deprecated and will be removed in Qt5.
Change-Id: I1c7f0e46149964367f42faccfff4b89acbf16511
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Change I00020eed fixed a bug present in 64-bit machines because it
tried to access QList<int>'s internal array data, assuming it was a
vector of ints. That worked in 32-bit, but not 64-bit.
The fix involves a conversion between QList and QVector. Now fix it
properly by changing everything to be QVector. The benefit is that on
64-bit, they are real vectors, not the 50%-overhead pointer array that
QList is.
Change-Id: I989ad279d0d8b2c9ab262a1eed413ab2365b5461
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Use QMetaMethod::name() instead of parsing the signature.
Use QMetaMethod::returnType() instead of resolving the type id
via the type name.
Change-Id: If5d0198c5f1329fd9d9340acd58bd4a36933d960
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This is a semi-automatic search, so I'm
reasonably sure that all the exported ones
have been caught.
Change-Id: I314d341ad0db4e9d4bbf353a9537c9422ad8a54b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QMetaType::Void was ambiguous, it was pointing to a valid type (void)
and in the same time it was signaling errors in QMetaType. There was
no clean way to check if returned type was valid void or some
unregistered type.
This feature will be used by new QMetaObject revision which will
store type ids instead of type names. So it will be easy to
distinguish between:
void mySlot();
MyUnregisteredType mySlot();
Change-Id: I73ff097f75585a95e12df74d50c6f3141153e771
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
In Qt5 the meta-data format will be changed to not store the
method signature string explicitly; the signature will be
reconstructed on demand from the method name and parameter type
information.
The QMetaMethod::signature() method returns a const char pointer.
Changing the return type to QByteArray can lead to silent bugs due to
the implicit conversion to char *. Even though it's a source-
incompatible change, it's therefore better to introduce a new
function, methodSignature(), and remove the old signature().
Task-number: QTBUG-24154
Change-Id: Ib3579dedd27a3c7c8914d5f1b231947be2cf4027
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
