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>
Until now, QEasingCurve was not streaming all it's internal state.
Therefore, doing store/reload operation through QDataStream would not
yield the same curve as the original. This patch fixes it.
[ChangeLog][QtCore][QEasingCurve] QEasingCurve now properly streams all
the data needed to QDataStream.
Change-Id: I1619501f5b4237983c8c68e148745a5e58863f55
Fixes: QTBUG-68181
Reviewed-by: Jan Arve Sæther <jan-arve.saether@qt.io>
Removes handling of missing Q_COMPILER_NULLPTR, Q_COMPILER_AUTODECL,
Q_COMPILER_LAMBDA, Q_COMPILER_VARIADIC_MACROS and
Q_COMPILER_AUTO_FUNCTION.
We haven't supported any compilers without these for a long time.
Change-Id: I3df88206516a25763e2c28b083733780f35a8764
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Enum class are serialized using the declared size.
[ChangeLog][QtCore][QDataStream] Enumerations can now
be serialized through QDataStream without the need of
manually defining streaming operators.
Change-Id: Iae9a63eb62b5a5615b657766a3c4c66ba4d98d0e
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Paolo Dastoli <paolo.dastoli@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The test was never used or compiled, it has to be fine to add it :-)
Change-Id: If210c19515a545a6dbaef18a16dc018c0348070d
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
A string can parse as a non-zero double that's smaller than the
smallest float yet be a faithful representation of the smallest float.
So rather than testing for non-zero doubles less than the smallest
float, test for non-zero doubles that cast to float zero; these
underflow. This means small values close below the smallest float
shall round up to it, rather than down to zero, requiring a tweak to
an existing test. Added a test for the boundary case (and tidied the
test data).
Fixes: QTBUG-74833
Change-Id: I4cb30b3c0e54683574b98253505607caaf88fbfb
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Various patterns seem to have been copied, notably counting time from
QTime(0, 0) rather than using QTime::msecsSinceStartOfDay() and its
setter. Unsuitable value types also put in an appearance, and
QTime()'s parameters after the first two default to 0 anyway.
Corrected a lie in QTime()'s default constructor doc; it does not work
the same as QTime(0, 0) at all.
Change-Id: Icf1a10052a049e68fd0f665958f36dbe75ac46d5
Reviewed-by: Thiago Macieira <thiago.macieira@intel.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>
Fixed the other tests that used the methods, so that they now get the
data from QLocale instead; and added the missing feature #if-ery, as
these are textdate methods.
Change-Id: I896f356bdf88037db23590c71d0aeb0b8722bfa7
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
The code had min and max of an integral type and tested min + min / 2,
which naturally overflowed, provoking a compiler warning. The test
was meant to be testing min - min / 2; but min is even, so this is
just min / 2; and doubling that won't overflow (which is what the test
is about). As it happens, min + min / 2 is in fact max - max / 2,
which *would* be a good value to test, since max is odd. So add a
test for that and remove the broken test.
Change-Id: Iec34acbf0d5d7993d41ff844875dc10480b8eb1f
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Use move on the existing value as well so the constructor makes more
of a difference.
Change-Id: Iee2080da7b7d2d88eb108f0448c61423c7256979
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
[ChangeLog][QtCore] Added support of deduction guides for QPair
Change-Id: I41a798390dc2c925b0f8432ba12aa345724de2d7
Reviewed-by: Martin Smith <martin.smith@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Ville Voutilainen <ville.voutilainen@qt.io>
They are the only Qt symbols neither prefixed with q or with the Qt
namespace. This changes preserves source and binary compatibility
while making it possible to define conflicting symbols.
Change-Id: I6d4181206e63faa922fa0c8b644e0a4b88826a97
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
The test is flaky which was uncovered by the upcoming
QTimer::singleShot optimization patches:
When the Emitter's thread is started and executes the timout functor
before the state machine is started, then the state machine will never
see the emitSignalWithNoArg signal and thus never transition to the
final state and finish.
This patch ensures that the code in the background thread is only run
after the state machine was started to fix this flakyness.
Change-Id: I6f91a2420165662ece75e550a6d73fe098137d4c
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Kari Oikarinen <kari.oikarinen@qt.io>
It can happen that QDataStream is fed a QVariant that contains a QPixmap
representation, that will make the application crash when trying to
restore it
This is specially important for cases in which applications expose dbus
interfaces with QVariantMaps
Change-Id: Ife4feaef30f30e7e27d88464bd6b2a247f743123
Reported-by: Fabian Vogt <fabian@ritter-vogt.de>
Reviewed-by: Fabian Vogt <fabian@ritter-vogt.de>
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Recurse down the sibling at column 0 of the index instead down the
index.
Change-Id: Ie78d8b28eab7438ca3f83ee0df177115ca82806e
Fixes: QTBUG-73864
Reviewed-by: David Faure <david.faure@kdab.com>
While an invalid time-zone shall have no transitions, so may various
constant zones, like UTC. The TZ data may include only the POSIX rule
for such a zone, in which case we should use it, even if there are no
transitions.
Broke out a piece of repeated code as a common method, in the process,
since I was complicating it further.
Added test for the case that revealed this; and made sure we see a
warning if any of the checkOffset() tests gets skipped because its
zone is unsupported.
Fixes: QTBUG-74614
Change-Id: Ic8e039a2a9b3f4e0f567585682a94f4b494b558d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
[ChangeLog][QtCore][QVariant] Fixed a bug that caused isNull() to be
true after downcasting a QObject* payload using convert().
Fixes: QTBUG-73196
Change-Id: Ifda15952f873d7142c95609b69ac424bbf16b723
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@qt.io>
Introduce a logging category for the qDebug()-output.
Add a meta type registration for QList<QPersistentModelIndex>, fixing
numerous warnings like:
WARN : tst_QItemModel::remove(QStandardItemModel:invalid start, valid count 5) QSignalSpy: Unable to handle parameter 'parents' of type 'QList<QPersistentModelIndex>' of method 'layoutChanged', use qRegisterMetaType to register it.
Fix a Clang warning about potential misuse of operator ,
Task-number: QTBUG-73864
Change-Id: I60998403a44f5df8767926951ee13d1ed1e93c37
Reviewed-by: David Faure <david.faure@kdab.com>
A QCOMPARE(..., true) isn't much use; and failure would have set the
object's .errorString(), which seems like it'd be worth reporting, so
use QVERIFY2() instead.
Change-Id: I2f3f9379984694891de81d2ffebc696d91eec70f
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The rules of std don't permit us to add an overload for
fpclassify(qfloat16), so we need our own equivalent that we *can*
overload. Deploy it in the few places we use fpclassify().
Extended qnumeric's testing to cover qFpClassify().
Change-Id: Ie5a0a5cc24599d1571404c573d33c682b0d305a5
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Renamed the test, since it covers both, verified slightly more and
added checks that QCOMPARE() copes as intended. Fixed some minor
coding-style defects in the process.
Change-Id: I49c2ffa0568a29e9e4b7f7395d4cacdeb0401da0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
While touching the code, deduplicate some methods.
Change-Id: I28f469f0e9ae000a34466b0ecc604b5f3bd09e63
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
qt_asciiToDouble accepts a length parameter, so we can just pass
that through. No need for explicitly null-terminating, which is
where the copy of the data would be made.
Change-Id: I4e7921541f03295a2fae6171b35157084ff3ed8c
Fixes: QTBUG-65748
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Iterate over a struct array rather than having a list of strings to
pull things out of, by individual index; this makes it easy to include
the non-existence check for directories in the same loop. In the
process, give the absolute-path tests a prefix to mirror the relative-
prefix on their partners. This prepares the way for adding more
test-cases.
Change-Id: Id839caedf92387dfa9b94f31253410285f72ff70
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Use setPath() instead, as advised in the deprecation warning.
Change-Id: I2f22220885938808c8efb85720ad10f7e05801ff
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Some directories that depend on QtGui were being included without the
appropriate check for qtHaveModule(gui).
Change-Id: I7c348c74464d44cbd35a027f188f8a23bb2021d9
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
Regular update in preparation for 5.13, adding tests for additions
since 5.9.4/5.10.1/5.11.0's update 7e946030 (the last to record its
upstream version sha1). Corrected the license header: it's now
published under MPL 2.0 (not 1.1); and our secondary licensing of it
is as LGPL3. Deferred full header over-haul until we've worked one
out in detail.
[ChangeLog][Third-Party Code] Updated DNS public suffix list
Task-number: QTBUG-72623
Change-Id: Iabdbbbfd79624830396c2a6fe0a73389bd6ce5b7
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Blacklisting did not work as blacklist should have contained osx
instead macos
Change-Id: Ifd76a38d371ccce545eb5df030aaa819b00a5b48
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@qt.io>
