The bitmap cache for the first 64 signals being connected was only set when the
connection is added. It was never unset when the connection was removed.
Internal use of the connectedSignals bitmap is not hurt by it occasionally
saying a signal is connected even though it is not, since the purpose of those
checks is avoiding expensive operations that are not necessary if nothing is
connected to the signal.
However, the public API using this cache meant that it also never spotted
signals being disconnected. This was not documented. Fix the behavior by only
using the cache if it is up to date. If it is not, use a slower path that gives
the correct answer.
To avoid making disconnections and QObject destructions slower, the cache is
only updated to unset disconnected signals when new signal connections are
added. No extra work is done in the common case where signals are only
removed in the end of the QObject's lifetime.
Fixes: QTBUG-32340
Change-Id: Ieb6e498060157153cec60d9c8f1c33056993fda1
Reviewed-by: Ville Voutilainen <ville.voutilainen@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@qt.io>
We need to override this snippet for the documentation
we generate for Qt for Python, and it is easier to have
it on a separate file.
Task-number: PYSIDE-801
Task-number: PYSIDE-691
Change-Id: Ideb5b6af25024279f167137d3b65660bb9c96a7e
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
Weak pointers are zeroed before destroyed() is emitted. This makes sense
because the signal is called "destroyed()", not "aboutToBeDestroyed()",
and the code has been like this for a long time.
Change-Id: Ic852fe354405e328d1922a75931e7eb7bf651b26
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Add it to configure.json and replace all occurrences of QT_NO_THREAD
with QT_CONFIG(thread). Add conditions for other features that depend
on thread support. Remove conditions where we can use the QMutex and
QThreadStorage stubs.
Change-Id: I284e5d794fda9a4c6f4a1ab29e55aa686272a0eb
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
[ChangeLog][QtCore][QObject] Fixed a bug in setProperty() that caused a
property change not to take effect if the old value compared equal using
QVariant's equality operator, but the values were not strictly equal.
Task-number: QTBUG-69744
Change-Id: I00e04a465fcf4fc1a462fffd1547885861a07a64
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Change-Id: I4f9033660c06686d7b499ec6d28be2c3b64353e2
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Reviewed-by: Martin Smith <martin.smith@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Link to the data ownership section of the QML documentation to elaborate
on the special rules that apply for invokable functions that return
QObjects.
Change-Id: I41ea9089468c9505807cf1fde22be759b397a6d3
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
We need to add the \relates command otherwise it won't appear in the documentation
Change-Id: I134776c1528445761a7539cf687e4855d39eb7a7
Reviewed-by: BogDan Vatra <bogdan@kdab.com>
Sometimes it is hard to find the line, when the warning
"QObject::connect: invalid null parameter" appears in the log.
This change adds the class names of the sender and receiver
to give a hint where to search for the wrong call to connect.
Change-Id: I00cead7d943f96d60f198cb3f0bed34ba10285c5
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Use QT_CONFIG(regularexpression), disentangle it from QT_BOOTSTRAPPED,
switch it off in the bootstrap build, remove the #ifdefs from
qregularexpression.{h|cpp}, and add QT_REQUIRE_CONFIG(regularexpression)
to the header.
qregularexpression.{h|cpp} are already correctly excluded in tools.pri
if !qtConfig(regularexpression).
Change-Id: I21de154a6a118b76f99003d3acb72ac1e220d302
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
The macro Q_DECLARE_INTERFACE declared some qobject_cast() functions
that clang-qdoc must not see in the contexts where the macro is used.
This update prevents that from happening by ensuring that Q_CLANG_QDOC
is not defined when the macro is defined.
This update also adds a \fn command for a declaration of qobject_cast()
that was missing in the documentation. There are two versions of the
function, one with a const parameter and one with a non-const parameter,
and they both share one qdoc comment.
Change-Id: Ic74d0aaae62767cd0391474ee95ae3f4f820b06e
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
When a deleteLater event is queued, a check if done if the same event
for the same receiver is queued before by scanning all pending events.
This leads to quadratic behavior, which is quite noticeable. By using
an unused bit in QObjectData, this can be prevented. Now the duplicate
event scanning in QCoreApplication is only done for the quit event.
Task-number: QTBUG-65712
Change-Id: Ie505acbbec802f91ebd0b94ac067e362c2476113
Reviewed-by: Erik Verbruggen <erik.verbruggen@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
clang required adding template clauses to a few \fn commands.
There were also a few cases where Q_QDOC was changed to Q_CLANG_QDOC
and a few cases where special declarations for qdoc were removed in
favor of the actual declarations.
Unfortunately, a few qdoc warnings remain unfixed for classes
QObject and QMetaType, but these might be caused by minor bugs
in clang-qdoc itself, so they will be fixed there.
Change-Id: Ib586628cb6d2aa9cf4bcad303b5af09b412a7e57
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
old style connects have protection against null sender and null receiver,
but new style only had against null sender.
Change-Id: Ie555ac078412918e60c3b60830fe1f3abfb7f5af
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
There were four dummy declarations for struct QMetaObject that were
needed by old qdoc to allow documentation of some very complicated
function signatures that old qdoc could not parse. clangqdoc can now
parse these signatures, but, unfortunately, old qdoc is still used to
parse \fn commands in .cpp and .qdoc files, so the dummy declarations
are still needed in struct QMetaObject. However, clangqdoc now
sees that two of the four dummy declarations are actually duplicates
of the other two, and then old qdoc complains when it can't find all
four of the function nodes, when it parses the four \fn commands.
This update removes the duplicate dummy declarations and the two
redundant \fn comments. The remaining two \fn comments are
updated accordingly.
This change also moves a couple of qdoc comments so they are located
with the function definitions that they are documenting.
Change-Id: I85e2492ba0380b01c3700b3dc7db0913d6429701
Reviewed-by: Martin Smith <martin.smith@qt.io>
This change supplies several missing class qualifiers for
parameter types and function return types.
Change-Id: I569026e4da0948902fcc13557003d3748b85dd82
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
Remaining uses of Q_NULLPTR are in:
src/corelib/global/qcompilerdetection.h
(definition and documentation of Q_NULLPTR)
tests/manual/qcursor/qcursorhighdpi/main.cpp
(a test executable compilable both under Qt4 and Qt5)
Change-Id: If6b074d91486e9b784138f4514f5c6d072acda9a
Reviewed-by: Ville Voutilainen <ville.voutilainen@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
They're meant to be subclassed, so we need to avoid slicing.
Change-Id: I384b65478f728c69aaf1edbc985b3fb4150191fe
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
In preparation of Qt6 move away from pre-C++11 macros.
Change-Id: I44126693c20c18eca5620caab4f7e746218e0ce3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Removing connections and resizing the signal vector now
happens in a way that will not interfere with activate(),
as the old objects won't get deleted if we are somewhere
inside a signal emission.
This means that we don't need to lock the senders mutex
in activate anymore, as long as the reference counting
on the ConnectionData is atomic and we are in the senders
thread.
This implies that we now need to lock the receivers mutex in
queued_activate() abd blocking queued activation to ensure
it hasn't been deleted while we are emitting.
In addition, some precautions need to be taken to not read
from the receiver without holding the lock, as it could get
deleted while we're activating (if it's in a different thread).
To make that possible store the receivers thread id in the
connection data.
Use atomic pointers for all variables that can get modified
with the signalSlotLock() held and that are being read
without the lock being held.
This gives us a very nice additional speed improvement
for signal emissions.
without change with change
string based connect: 3287 2436
pointer based connect: 3941 3265
not connected: 403 400
disconnected: 460 489
5 slots connected: 9112 4515
Change-Id: Ib7324bb74c389dcc3b6581a03c31469a6e589fc2
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
And use it to clean up the reimplementations in Qt DBus.
Change-Id: I8e3fe35e8db6405cbcbfb45b42a8f2efecc1cef0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Put all connections that get disconnected into a singly
linked orphaned list.
Whenever the refcount on the connectionData drops down to
one, this list can safely be cleared, even with the planned
removal of locking in activate().
Use an id integer in the connection to acoid activating newly
added connections.
Fixes: QTBUG-72649
Change-Id: Ide3d116ae7fc9ca497598c1c2b71d43b4339c92d
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
When checking whether a slot is connected to a signal, we need to
hold the signalSlotLock to be sure about the answer, or we can
get crashes when a connection gets removed while doing the check.
The check in activate() can handle some uncertainty as it's only
a shortcut to the longer path.
Fixes: QTBUG-74604
Change-Id: I3fc822455fbadc0223ef68632f5fb3df3ff3e86d
Reviewed-by: Aapo Keskimolo <aapo.keskimolo@qt.io>
It Q_ASSERTs that argv is not a nullptr, so it would fail when an
unconnected signal with 0 arguments was emitted.
Change-Id: I5dd810fbeea5b6b511eff4705efdaa6a55739604
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Conflicts:
tests/auto/widgets/itemviews/qheaderview/tst_qheaderview.cpp
Added tests/auto/testlib/selftests/expected_crashes_5.txt to work
round the output of the crashes test (which exercises UB, see
QTBUG-73903) being truncated on one test platform.
Change-Id: I9cd3f2639b4e50c3c4513e14629a40bdca8f8273
Add a simple private QBasicMutexLocker class, and let the
QOrderedMutexLocker operate on a QBasicMutex.
This allows the compiler to inline more things when handling
connections and speeds up activate() a bit more.
without change with change
string based connect: 3621 3368
pointer based connect: 4341 3919
not connected: 433 437
disconnected: 551 538
Change-Id: If979337891178aaeb0b3340b6d4f68b6f86b0260
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
The main difference is that QObject itself also holds on reference
on the structure.
Also rename the orphaned flag to objectDeleted for clarity.
Change-Id: Ief9b9ff9c8b9cc3630dcfd29806ed24cd07150e4
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
