Commit Graph

787 Commits

Author SHA1 Message Date
Volker Hilsheimer
5c520f4b0a Discover the conditions under which registerTimer is flaky, and skip
On macOS, the registerTimer test case fails frequently, and blocks
valid integrations. With this change we try to detect the condition
and skip the test.

Change-Id: Id2065f606abfd431971becf63034a4c1f0fdb9e5
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2020-02-07 04:51:16 +01:00
Vitaly Fanaskov
dd42e5d5e7 QSignalMapper: deprecate overridden signals
Task-number: QTBUG-80906
Change-Id: I9beab78d8fe8dfc712969f65792f50360a890287
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Christian Ehrlicher <ch.ehrlicher@gmx.de>
2020-02-01 21:23:44 +01:00
Qt Forward Merge Bot
a3fc03c130 Merge remote-tracking branch 'origin/5.14' into 5.15
Change-Id: I98b1a5a11ece3957a1115c1d9be8841759206ffe
2020-01-29 01:00:56 +01:00
Liang Qi
54b1f1d199 Merge remote-tracking branch 'origin/5.14.1' into 5.14
Conflicts:
	mkspecs/features/create_cmake.prf

Done-With: Artem Pisarenko <artem.k.pisarenko@gmail.com>
Change-Id: I2ecb9fdca06fe687be8ab3457a58dd81e5e81c4c
2020-01-28 09:16:11 +01:00
Qt Forward Merge Bot
082faeff9c Merge remote-tracking branch 'origin/5.14' into 5.15
Conflicts:
	src/gui/image/qpnghandler.cpp

Change-Id: I8630f363457bb613d8fb88470a71d95d97cdb301
2020-01-28 08:09:51 +01:00
Tor Arne Vestbø
92918e567a Flatten version-specific blacklisting on macOS to all macOS versions
We don't know which versions these blacklistings actually apply on
unless we actually get macOS 10.14 and 10.15 into the CI and running
tests, so let's start with that, and then granularize the blacklists
after that.

Task-number: QTBUG-75786
Change-Id: Id79642afa50cb20efa2cd209286b6933918d3a4a
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
2020-01-22 17:58:31 +01:00
Kari Oikarinen
4f55c41816 Merge 5.14 into 5.14.1
Change-Id: Ie90edfd16f48e1907fd18288473ac403f62b9032
2020-01-15 19:08:18 +02:00
Fabian Kosmale
a4fb128b73 QSequentialIterableImpl: support append
Task-number: QTBUG-80916
Change-Id: I87e74da0ce454e56b5fe94d9db3693a587d35edf
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
2020-01-15 10:09:00 +01:00
Liang Qi
a59c768489 Merge remote-tracking branch 'origin/5.14' into 5.15
Conflicts:
	src/corelib/kernel/qobject.cpp

Change-Id: I4780b25665672692b086ee92092e506c814642f2
2020-01-09 20:30:39 +01:00
Andre Hartmann
1edf8bc465 QObject: Replace more 0 and NULL with nullptr
... in docs, comments, and warnings. Also adopt
some occurrences around there and in the snippets.

Change-Id: Icc0aa0868cadd8ec2270dda794bf83cd7ab84160
Reviewed-by: Christian Ehrlicher <ch.ehrlicher@gmx.de>
2020-01-09 02:33:08 +01:00
Qt Forward Merge Bot
3a010f72b8 Merge remote-tracking branch 'origin/5.14' into 5.15
Conflicts:
	src/corelib/kernel/qvariant.h

Change-Id: I8f3873e74b9795ac889e7c7ec5de2619bca92160
2020-01-06 07:20:18 +00:00
Fabian Kosmale
8669b8e60f QVariant: Prefer direct conversion to QVariant{List,Map,Hash}
If a type has both a converter to QVariantList and to
QSequentialIterableImpl registered, we would have chosen the
QSequentialIterableImpl version. In the case of types like QJSValue,
this is more costly. With this change  we therefore uses the direct
conversion if it has been registered.

The same applies to QAssociativeIterableImpl and
QVariantHash/QVariantMap.

Change-Id: I9c0b5068efe4bfbc5e0598a200e6db59201e9974
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
2020-01-03 10:59:37 +01:00
Qt Forward Merge Bot
11d7788c18 Merge remote-tracking branch 'origin/5.14' into 5.15
Change-Id: I69238f23882deebeaad46e4fdcf899ab22cc2b8f
2019-12-12 01:01:04 +01:00
Fabian Kosmale
c15d6a155c QVariant: introduce ShouldDeleteVariantData flag
This flag is used in QSequentialIterable and QAssociativeIterable to indicate
that the data pointer in VariantData should be deleted after the variant has
been constructed.

The use case for this is
https://codereview.qt-project.org/c/qt/qtdeclarative/+/284151, where we have
a proxy iterator and cannot easily return a pointer to already owned data, as
it is hard to manage its lifetime in the iterator. In contrast, it is clear
that we can release the memory in the QSequentialIterable functions, as it has
already been copied into the QVariant there.

Change-Id: I2b33497d991cd4f752153e0ebda767b82e4bb851
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
2019-12-11 20:12:23 +01:00
Liang Qi
979b9335e5 Merge "Merge remote-tracking branch 'origin/5.14' into 5.15" 2019-12-10 17:53:06 +02:00
Liang Qi
90210d5d9c Merge remote-tracking branch 'origin/5.14' into 5.15
Conflicts:
	tests/auto/network/kernel/qnetworkinterface/BLACKLIST

Change-Id: I1e8866c63b54bcd95fc2a044276ee15b7f60e79a
2019-12-10 13:51:40 +02:00
Timur Pocheptsov
30e32870a0 QCocoaEventDispatcher: make 'interrupt' work
even if we are currently inside processEvents (apparently called manually
and not from QEventLoop::exec()). A carefully crafted application
(see, for example, the linked QTBUG or even updated auto-test)
can trigger itself into failing to exit the current (potentially nested)
event loop. We can harden our Cocoa event dispatcher to detect
such condition and properly propagate 'interrupt' to where it'll
do its job, indeed, interrupting the real event loop (aka [NSApp run]).
This mainly means we have to undo what bool blocker would erroneously do.
Also, long live (as people love to say these days) to another tricky
(somewhat) auto-test (surely, it's not flaky!).

Fixes: QTBUG-79477
Change-Id: I794f0cda23e24d36be67f2bb63d52b74be057c31
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2019-12-10 11:33:26 +01:00
Tor Arne Vestbø
c3bd5ffdc8 Don't wrap feature detection macros with QT_HAS_FOO() variants
Using wrappers for these macros is problematic when for example passing the
-frewrite-includes flag to preprocess sources before shipping off to distcc
or Icecream. It will also start producing warnings when compilers implement
http://eel.is/c++draft/cpp.cond#7.sentence-2. See for example
https://reviews.llvm.org/D49091

Both https://clang.llvm.org/docs/LanguageExtensions.html and the SD-6 document at
https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations
recommend defining '__has_foo(x) 0' as a fallback for compilers without the
macros, so that's what we go for.

Change-Id: I0298cd3b4a6ff6618821e34642a5ddd6728be767
Reviewed-by: Alex Richardson <arichardson.kde@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-12-10 00:48:07 +01:00
Olivier Goffart
4c3c63d4cb QMetaType: add more static-less API
In prevision to Qt6 which is going to discourrage the use of the integer id,
add some missing API to the staticless QMetaType API:

 - Add a way to construct a QMetaType from a type without calling qMetaTypeId:
   QMetaType::fromType<T>()
 - Add equality operators
 - Add a QMetaType::name() function
 - Add a default constructor (by adding a default parameter to the existing ctor)

Change-Id: I95487c1c31bdf0d773717daa9d5452cbced30673
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2019-12-07 10:32:29 +01:00
Joni Poikelin
8310d636be Fix serializing QUuid with QDataStream with Qt 4 stream versions
Fixes: QTBUG-76103
Change-Id: Iac92c33539940f5f67d014db5240c6dc14bfb772
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
2019-12-03 13:28:22 +02:00
Daniel Smith
662fec6f0d Update for failures only on dev branch. Use general platform names
This patch was generated with tooling from patchset 31 of
https://codereview.qt-project.org/c/qt/qtqa/+/267034 in interactive
mode. General platform names were chosen if greater than 60% of the
currently active platforms of a given type in COIN recently failed.

Change-Id: Ia4bde7f0ec422bbb727dc9d7151295159094f146
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
2019-08-19 18:22:11 +02:00
Friedemann Kleint
ecb6327762 QTestLib: Introduce initMain() to run in main before qApp exists
When running Qt autotests on a developer machine with a high
resolution, failures occur due to either some widget becoming too
small, some rounding fuzz appearing when Qt High DPI scaling is active,
or some test taking screenshots failing to deal with device pixel
ratios != 1 in the obtained pixmaps.

It is not feasible to adapt all tests to pass on high resolution
monitors in both modes (Qt High DPI scaling enabled/disabled). It
should be possible to specify the High DPI setting per test.

Previously, it was not possible to set the Qt High DPI scaling
attributes since they must be applied before QApplication
instantiation.

Enable this by checking for the presence of a static void initMain()
function on the test object and invoking it before QApplication
instantiation.

Prototypically use it in tst_qtimer and to turn off High DPI scaling for
tst_QGL.

[ChangeLog][QtTestLib] It is now possible to perform static
initialization before QApplication instantiation by implementing a
initMain() function in the test class.

Change-Id: Idec0134b189710a14c41a451fa8445bc0c5b1cf3
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2019-08-13 19:07:05 +02:00
Volker Hilsheimer
b7d073e990 Refactor memory allocation for arguments of QMetaCallEvents
There are two cases:

In a BlockingQueuedConnection, QMetaCallEvent doesn't allocate memory
and instead passes already existing pointers through. A QSemaphore
is used to serialize data access between threads. So the constructor
taking a QSemaphore can be simplified to only accept an existing arg
array.

In a QueuedConnection, QMetaCallEvent needs to make deep copies of
the arguments, and memory needs to be allocated based on the number
of arguments. The previous code put the burden of memory allocation
on the code generating the event, while the memory was free'd by
~QMetaCallEvent. Instead, make it QMetaCallEvent's responsibility
to allocate and free the memory as needed, and adjust the code
generating QMetaCallEvents.

We can allocate the memory for types and pointers to arguments in a
single block, starting with the space for the array of void*, followed
by the space for the array of integers to avoid byte alignment issues.
By pre-allocating the space that's needed by three arguments, we can
avoid all mallocs for the majority of QMetaCallEvents.

Until this change has propagated through qt5.git, we need to keep the
old API that is still used by QtDeclarative around. Once QtDeclarative
has migrated to the new API, it can be removed.

Change-Id: Id7359ffc14897237ea9672dabae9ef199a821907
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
2019-08-10 22:04:11 +02:00
Sona Kurazyan
10845315b7 Conditionally disable parts of the tests testing the deprecated APIs
Somehow missed these during my first iteration.

Change-Id: Iaef0ab84d9320a98f49ec071c93cd6f2907d92c3
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>
2019-08-01 13:51:18 +02:00
Thiago Macieira
9b8493314d Qt6: Fix uninitialized meta objects on Windows
Windows has a problem relating to cross-DLL variable relocations: they
are not supported. Since QMetaObject's link to the parent class is done
via a pointer, every QMetaObject in a DLL or in the EXE that derives
from a class from another DLL (such as QObject) will be dynamically
initialized.

This commit changes the meta object pointers in QMetaObject::d from raw
pointers to a wrapper class SuperData, which is almost entirely source-
compatible with the pointer itself. On all systems except for Windows
with Qt 6, it's binary compatible with the current implementation.

But for Windows with Qt 6, this commit will store both the raw pointer
and a pointer to a function that returns the QMetaObject, with one of
them non-null only. For all meta objects constructed by moc, we store
the function pointer, which allows the staticMetaObject to be statically
intialized. For dynamic meta objects (QMetaObjectBuilder, QtDBus, QtQml,
ActiveQt), we'll store the actual raw pointer.

[ChangeLog][QtCore][QMetaObject] Some internal members of the
QMetaObject class have changed types. Those members are not public API
and thus should not cause source incompatibilities.

The macro QT_NO_DATA_RELOCATION existed in Qt 4 but was called
Q_NO_DATA_RELOCATION and only applied to Symbian. It was removed in
commit 24a72c4efa ("qglobal: Remove
symbian specific features").

Task-number: QTBUG-38876
Fixes: QTBUG-69963
Change-Id: Id92f4a61915b49ddaee6fffd14ae1cf615525e92
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
2019-07-16 18:34:41 -07:00
Marc Mutz
0a724ac74c Introduce QT_NO_LINKED_LIST and mark QtBase (almost) free of it
QLinkedList is still used in several tests. Add exceptions for
these subdirs.

Change-Id: I50ccd2a0892129d4a47aa4e2400211690da9a82d
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2019-07-12 14:26:30 +02:00
Marc Mutz
e936c2a9a2 tst_QObbject: Fix very annoying -Wdeprecated-copy warnings
There's like three pages of this when compiling the test :)

Change-Id: I923f2c4f5eff7c709977026666cc5b2a2cbfaa72
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2019-07-12 06:55:45 +02:00
Daniel Smith
6c136973fd unblacklist passing tests
These tests have not failed on the removed platforms for at least 60 days

Task-number: QTBUG-76608
Change-Id: If7a9f4db907124e3cd54e3f4b0ad3e20717d1912
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2019-07-08 11:01:42 +00:00
Sona Kurazyan
9b3e8b32f2 Remove usages of deprecated APIs of corelib
- Replaced the usages of deprecated APIs of corelib by corresponding
  alternatives in the library code and documentation.

- Modified the tests to make them build when deprecated APIs disabled:
    * Made the the parts of the tests testing the deprecated APIs to
      be compiled conditionally, only when the corresponding methods are
      enabled.
    * If the test-case tests only the deprecated API, but not the
      corresponding replacement, added tests for the replacement.

Task-number: QTBUG-76491
Task-number: QTBUG-76539
Task-number: QTBUG-76541
Change-Id: I62ed4a5b530a965ec3f6502c6480808f938921aa
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2019-07-05 11:25:46 +02:00
Marc Mutz
a27e7e8151 QObject: deprecate the undocumented userData() feature
... and schedule it for removal in Qt 6.

This appears to have come to some fame on the internet, so better add
a deprecation warning before we remove it in Qt 6.

Change-Id: I42d91d933f47dfd2d8d54c92358e9e46ced6bf21
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2019-06-29 16:10:01 +02:00
Giuseppe D'Angelo
34fe9232db Port from QAtomic::load() to loadRelaxed()
Semi-automated, just needed ~20 manual fixes:

$ find \( -iname \*.cpp -or -iname \*.h \) -exec perl -pe 's/(\.|->)load\(\)/$1loadRelaxed\(\)/g' -i \{\} +
$ find \( -iname \*.cpp -or -iname \*.h \) -exec perl -pe 's/(\.|->)store\(/$1storeRelaxed\(/g' -i \{\} +

It can be easily improved (e.g. for store check that there are no commas
after the opening parens). The most common offender is QLibrary::load,
and some code using std::atomic directly.

Change-Id: I07c38a3c8ed32c924ef4999e85c7e45cf48f0f6c
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
2019-06-20 20:48:59 +02:00
Edward Welbourne
84e89c1e9e Convert uses of QTime as a timer to QElapsedTimer
Change-Id: I2297f61efa5adf9ea5194c7f3ff68574cbcf452c
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
2019-06-14 10:42:33 +02:00
Samuel Gaist
c0f0e94db5 test: Fix QRegularExpression feature config check
The check to disable the test was the one for QRegExp. This patch fixes
that.

Change-Id: I8783f582998cdd6ffe5dc5dafb3d53d56cd91213
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
 
 
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-06-10 19:29:19 +00:00
Giuseppe D'Angelo
3e75c2965c Remove QLatin1Literal usages
That's an undocumented Qt 4/3/2 remnant, start remove usages.

Fix incorrect include header in qclass_lib_map.h as a drive-by.

Change-Id: I939be2621bc03e5c75f7e3f152546d3af6d37b91
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-06-10 16:50:31 +00:00
Christian Ehrlicher
b16fab1b63 Fix deprecation warnings
Fix deprecation warnings - replace qFindChild/Children() with
QObject::findChild/Children() and replace some 0 with nullptr.

Change-Id: If2f01d12fa91d09d98a61f73b0449a6773ac93db
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2019-05-27 22:16:32 +02:00
Shawn Rutledge
29e3a4dfea Fix warnings & deprs in tst_qcoreapplication and tst_qguiapplication
It's perhaps best to ensure that functions we are deprecating shall no
longer be used in tests.  Also, fix the "0 as nullptr" warnings.

Change-Id: I2f22c9b9482e80fa120bcd728ec269198a36678f
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
2019-06-05 13:01:13 +02:00
Friedemann Kleint
d2c4782432 tst_QVariant: Fix warnings about deprecated functions not under test —
Silence a warnings flood about qVariantFromValue(), QString::null
and QWeakPointer::data().

Change-Id: I73347190c0fa396b39b9efd00447cf24e48259a0
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
2019-05-24 10:35:17 +02:00
Liang Qi
388fe97f2a Merge remote-tracking branch 'origin/5.13' into dev
Conflicts:
	src/corelib/tools/qstring.cpp

Change-Id: I81dbf90fc936c9bf08197baefa071117bddb1c63
2019-05-13 08:04:58 +02:00
Qt Forward Merge Bot
e56d3b03ed Merge remote-tracking branch 'origin/5.12' into 5.13
Conflicts:
	src/corelib/tools/qlocale_data_p.h
        (Regenerated by running the scripts in util/local_database/)
	src/gui/opengl/qopengltextureuploader.cpp

Done-With: Edward Welbourne <edward.welbourne@qt.io>
Done-With: Allan Sandfeld Jensen <allan.jensen@qt.io>
Change-Id: I12df7f066ed0a25eb109f61c4b8d8dea63b683e2
2019-05-09 13:06:11 +00:00
Konstantin Shegunov
c6bee8e4b2 Fix integer overflows in QDeadlineTimer
If the deadline is far in the future, the conversions to nanoseconds
or internal arithmetic may overflow and give an invalid object, thus
the deadline may end up in the past. Added a test to the testlib
selftest for sleep.

[ChangeLog][QtCore][QDeadlineTimer] Fixed integer overflows
leading to immediate timeouts.

Task-number: QTBUG-69750
Change-Id: I9814eccdf9f9b3add9ca66ec3e27e10cd5ad54a8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-05-08 17:19:44 +00:00
Joerg Bornemann
ce1830fd21 Migrate Windows system libs to external dependencies
Started-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Change-Id: I211ce3252b836894aeeac1c85eb316d9596bca57
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
2019-05-08 08:30:02 +00:00
Allan Sandfeld Jensen
b32b61f17e Remove handling of missing Q_COMPILER_RVALUE_REFS
Remove remaining handling of missing support for rvalue refs.

Change-Id: I78bab8bccfeeb9c76f464f345874364a37e4840a
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-05-01 20:24:45 +00:00
Liang Qi
dc37318684 Merge remote-tracking branch 'origin/5.13' into dev
Conflicts:
	src/gui/util/qshaderformat.cpp
	src/gui/util/qshaderformat_p.h
	src/widgets/graphicsview/qgraphicsitem_p.h

Change-Id: Idafd88eb9a0a15b4af29f6143d009c1ec8ceecca
2019-04-24 09:52:30 +02:00
Liang Qi
9d67bf6e96 Merge remote-tracking branch 'origin/5.12' into 5.13
Conflicts:
	src/corelib/tools/qlocale.qdoc
	tests/auto/corelib/io/qfileinfo/tst_qfileinfo.cpp

Done-with: Edward Welbourne <edward.welbourne@qt.io>
Done-with: Volker Hilsheimer <volker.hilsheimer@qt.io>
Change-Id: I88e0757b2d020f0a244714c87844631df4b3fd13
2019-04-16 09:34:50 +02:00
Hugo Beauzée-Luyssen
2a815855a9 corelib: invokeMethod: Allow non copyable functors to be used
[ChangeLog][QtCore][QMetaObject] Non-copyable lambdas can now be used
with invokeMethod(). For consistency reasons, the functor object is
now always moved.

Fixes: QTBUG-69683
Change-Id: I66ff5e21d6d1926f0f7c5f8c304bed1a90b69917
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
2019-04-12 20:18:20 +00:00
Liang Qi
c7af193d2e Merge remote-tracking branch 'origin/5.13' into dev
Conflicts:
	src/widgets/styles/qstyle_p.h

Change-Id: I0e6e856bd6628da1135b3ba674dddffabbeb5c09
2019-04-11 07:47:21 +02:00
Qt Forward Merge Bot
ff88e20b83 Merge remote-tracking branch 'origin/5.12' into 5.13
Change-Id: I44eda44bf424fdcffab048a2534905d6162e5559
2019-04-10 01:00:08 +02:00
Milian Wolff
5f2afe18cc Fix QMetaObject::newInstance on non-QObject meta object
QMetaObject::newInstance returns a QObject, thus it's not possible to
create a new instance of a Q_GADGET using this function. Previously, we
returned a non-null QObject pointer for such scenarios, which then
leads to crashes when one tries to use it. Now, we check whether the
meta object inherits QObject's meta object, and error out early
otherwise.

Change-Id: I7b1fb6c8d48b3e98161894be2f281a491963345e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-09 15:46:35 +00:00
Allan Sandfeld Jensen
95f787bfdc Replace Q_DECL_NOTHROW with noexcept the remaining places
The first replacement had missed objective-C++ code some places ourside
the src dir.

In C-files Q_DECL_NOTHROW is replaced with Q_DECL_NOEXCEPT as we still
need to turn it off when compiled in C mode, but can get rid of the old
NOTHROW moniker.

Change-Id: I6370f57066679c5120d0265a69e7e378e09d4759
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-09 14:48:42 +00:00
Milian Wolff
58b4e07369 Optimize QTimer::singleShot(0, ...) when taking PMF or Functor callable
QTimer::singleShot is optimized for zero timeouts when using the API
taking a string method name. This optimization was not used for the API
taking a PMF or functor. This patch adds it, making the various API
calls behave similarly from a performance point of view.

The approach taken here requires a QObject context object. If none is
available, e.g. a nullptr was passed explicitly, or the
QTimer::singleShot(O, Functor) API was used, the optimization could
not easily be applied. This is not only bad from a performance POV,
but also poses as a potential source for heisenbugs: Using the
different API versions of QTimer::singleShot would use different code
paths internally, which then would not ensure the expected slot call
order. This problem actually existed already when mixing the
string-based slot syntax with PMF/functors in the QTimer::singleShot
API.

This patch overcomes this hurdle and fixes all of the above: When we
encounter a 0ms single shot timer, and no QObject context object is
available, we fall back to the main thread, or create a temporary
QObject for any other thread. The updated and extended benchmark
shows that this is still a significant performance improvement
over using a timer:

********* Start testing of qtimer_vs_qmetaobject *********
Config: Using QtTest library 5.14.0, Qt 5.14.0 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 8.2.1 20181127)
PASS   : qtimer_vs_qmetaobject::initTestCase()
PASS   : qtimer_vs_qmetaobject::bench(singleShot_slot)
RESULT : qtimer_vs_qmetaobject::bench():"singleShot_slot":
     7.48 msecs per iteration (total: 748, iterations: 100)
PASS   : qtimer_vs_qmetaobject::bench(singleShot_pmf)
RESULT : qtimer_vs_qmetaobject::bench():"singleShot_pmf":
     7.20 msecs per iteration (total: 720, iterations: 100)
PASS   : qtimer_vs_qmetaobject::bench(singleShot_functor)
RESULT : qtimer_vs_qmetaobject::bench():"singleShot_functor":
     6.79 msecs per iteration (total: 679, iterations: 100)
PASS   : qtimer_vs_qmetaobject::bench(singleShot_functor_noctx)
RESULT : qtimer_vs_qmetaobject::bench():"singleShot_functor_noctx":
     6.92 msecs per iteration (total: 693, iterations: 100)
PASS   : qtimer_vs_qmetaobject::bench(invokeMethod_string)
RESULT : qtimer_vs_qmetaobject::bench():"invokeMethod_string":
     7.34 msecs per iteration (total: 735, iterations: 100)
PASS   : qtimer_vs_qmetaobject::bench(invokeMethod_pmf)
RESULT : qtimer_vs_qmetaobject::bench():"invokeMethod_pmf":
     6.90 msecs per iteration (total: 690, iterations: 100)
PASS   : qtimer_vs_qmetaobject::bench(invokeMethod_functor)
RESULT : qtimer_vs_qmetaobject::bench():"invokeMethod_functor":
     6.62 msecs per iteration (total: 662, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(singleShot_slot)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"singleShot_slot":
     7.45 msecs per iteration (total: 745, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(singleShot_pmf)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"singleShot_pmf":
     7.46 msecs per iteration (total: 747, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(singleShot_functor)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"singleShot_functor":
     6.70 msecs per iteration (total: 671, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(singleShot_functor_noctx)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"singleShot_functor_noctx":
     13.75 msecs per iteration (total: 1,376, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(invokeMethod_string)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"invokeMethod_string":
     7.05 msecs per iteration (total: 706, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(invokeMethod_pmf)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"invokeMethod_pmf":
     6.70 msecs per iteration (total: 670, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(invokeMethod_functor)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"invokeMethod_functor":
     6.58 msecs per iteration (total: 658, iterations: 100)
PASS   : qtimer_vs_qmetaobject::cleanupTestCase()
Totals: 16 passed, 0 failed, 0 skipped, 0 blacklisted, 20977ms
********* Finished testing of qtimer_vs_qmetaobject *********

Without the change to qtimer.cpp, the results are:

********* Start testing of qtimer_vs_qmetaobject *********
Config: Using QtTest library 5.14.0, Qt 5.14.0 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 8.2.1 20181127)
PASS   : qtimer_vs_qmetaobject::initTestCase()
PASS   : qtimer_vs_qmetaobject::bench(singleShot_slot)
RESULT : qtimer_vs_qmetaobject::bench():"singleShot_slot":
     7.45 msecs per iteration (total: 745, iterations: 100)
PASS   : qtimer_vs_qmetaobject::bench(singleShot_pmf)
RESULT : qtimer_vs_qmetaobject::bench():"singleShot_pmf":
     112.84 msecs per iteration (total: 11,285, iterations: 100)
PASS   : qtimer_vs_qmetaobject::bench(singleShot_functor)
RESULT : qtimer_vs_qmetaobject::bench():"singleShot_functor":
     115.62 msecs per iteration (total: 11,563, iterations: 100)
PASS   : qtimer_vs_qmetaobject::bench(singleShot_functor_noctx)
RESULT : qtimer_vs_qmetaobject::bench():"singleShot_functor_noctx":
     110.81 msecs per iteration (total: 11,082, iterations: 100)
PASS   : qtimer_vs_qmetaobject::bench(invokeMethod_string)
RESULT : qtimer_vs_qmetaobject::bench():"invokeMethod_string":
     7.04 msecs per iteration (total: 704, iterations: 100)
PASS   : qtimer_vs_qmetaobject::bench(invokeMethod_pmf)
RESULT : qtimer_vs_qmetaobject::bench():"invokeMethod_pmf":
     6.62 msecs per iteration (total: 662, iterations: 100)
PASS   : qtimer_vs_qmetaobject::bench(invokeMethod_functor)
RESULT : qtimer_vs_qmetaobject::bench():"invokeMethod_functor":
     6.62 msecs per iteration (total: 662, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(singleShot_slot)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"singleShot_slot":
     7.45 msecs per iteration (total: 746, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(singleShot_pmf)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"singleShot_pmf":
     118.42 msecs per iteration (total: 11,842, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(singleShot_functor)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"singleShot_functor":
     119.35 msecs per iteration (total: 11,936, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(singleShot_functor_noctx)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"singleShot_functor_noctx":
     130.96 msecs per iteration (total: 13,096, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(invokeMethod_string)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"invokeMethod_string":
     8.08 msecs per iteration (total: 808, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(invokeMethod_pmf)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"invokeMethod_pmf":
     6.79 msecs per iteration (total: 680, iterations: 100)
PASS   : qtimer_vs_qmetaobject::benchBackgroundThread(invokeMethod_functor)
RESULT : qtimer_vs_qmetaobject::benchBackgroundThread():"invokeMethod_functor":
     7.49 msecs per iteration (total: 749, iterations: 100)
PASS   : qtimer_vs_qmetaobject::cleanupTestCase()
Totals: 16 passed, 0 failed, 0 skipped, 0 blacklisted, 153995ms
********* Finished testing of qtimer_vs_qmetaobject *********

Additionally, this patch adds a unit test to verify that the slot call
order for 0ms single shot timers is followed while mixing the various
API versions. It fails without this patch but passes now.

Finally, another test is added to verify that using QTimer::singleShot
before a QCoreApplication was constructed is still working properly.

Change-Id: I0d6211554b6198cb3e527be9ec3adc572b1b54ee
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-06 21:16:56 +00:00