The QtConcurrent::RunFunctionTask class keeps a variable to store the
result of QtConcurrent::run when it becomes available, so that it can be
reported afterwards. This requires the result type to be
default-constructible. However there's no need in storing the result, it
can be reported immediately after it becomes available.
Pick-to: 6.1 6.2
Fixes: QTBUG-95214
Change-Id: I95f3dbff0ab41eaa81b104a8834b37d10a0d193a
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
QtConcurrent reduce functions were requiring to explicitly pass the
the result type when passing functors as reductor. This was because of
inability to deduce the result type from the functors. The result type
of the QtConcurrent reduce functions should match with the type of the
fist argument of the operator() when a functor is passed. Reused the
ArgResolver type trait (already used for QFuture and QtConcurrent::run)
to find out the result type in that case.
Task-number: QTBUG-88448
Change-Id: Ief0eeee197df8cb9c30f3403d71978f36e4fb0f2
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Enable the check, that has been disabled because of instability, which
makes the test-case useless. The reason for instability probably was
that it doesn't always start maxThreadCount number of threads: it could
be less if the workers reuse the thread pool's already created threads
(if possible) instead of creating new one each time. But we can at least
make sure, that we're not starting more threads than expected.
Task-number: QTBUG-94463
Pick-to: 5.15 6.1 6.2
Change-Id: I8e498c377d86c49758bde0114fe6f7e0432fe993
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Andreas Buhr <andreas.buhr@qt.io>
After 79fd1cb2c6 the methods for running
QtConcurrent algorithms in the blocking mode aren't used anymore. Since
ThreadEngineBase and ThreadEngineStarter classes aren't meant to be used
externally, it should be fine to remove startBlocking() methods now.
Removed the unused code and adjusted the tests accordingly.
Change-Id: Ifb13820ce207869d6f720bcb5be8d35bb355fe33
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Those serve no purpose anymore, now that the .pro files are gone.
Task-number: QTBUG-88742
Change-Id: I39943327b8c9871785b58e9973e4e7602371793e
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
Remove the qmake project files for most of Qt.
Leave the qmake project files for examples, because we still test those
in the CI to ensure qmake does not regress.
Also leave the qmake project files for utils and other minor parts that
lack CMake project files.
Task-number: QTBUG-88742
Change-Id: I6cdf059e6204816f617f9624f3ea9822703f73cc
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
Complete search and replace of QtTest and QtTest/QtTest with QTest, as
QtTest includes the whole module. Replace all such instances with
correct header includes. See Jira task for more discussion.
Fixes: QTBUG-88831
Change-Id: I981cfae18a1cabcabcabee376016b086d9d01f44
Pick-to: 6.0
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Previously a default constructor was required for the result type
of mappedReduced() and filteredReduced(), even if a default value
was provided.
This patch fixes the problem.
The issue was in the ResultReporter type, that was calling
QList::resize() to adjust the size of expected reported results.
A default-value parameter was added to the class, so that
a corresponding overload of QList::resize could be invoked.
Task-number: QTBUG-88452
Change-Id: I51113753e314d76aa74d201b5a7e327a6ca75f47
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
There are many different ways to to call map and filter functions
in QtConcurrent. This patch adds a python script to generate
all possible combinations.
Change-Id: I61ed1758601e219c5852e8cc939c5feebb23d2f6
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
QtConcurrent::blockingMapped was not able to determine the result
type in case of passing containers that have more than one template
argument. This should be fixed by the parrent commit.
Also fixed some unrelated compiler warnings.
Change-Id: I96618dc955c5e4c3792f28f6436d6851745dc01d
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
- Remove the casting operator of QFuture<T> to T. It calls
QFuture::result(), which may lead to undefined behavior if the user
has moved the results from QFuture via QFuture::takeResult() before
trying to do the conversion.
- Disable implicit conversion of QFuture<T> to QFuture<void>, by making
the constructor explicit. If the users really intend to do the
conversion, they should do it explicitly.
[ChangeLog][Source-Incompatible Changes][QFuture] Implicit conversions
of QFuture<T> to T and to QFuture<void> have been disabled. Use
QFuture::result() or QFuture::takeResult() where you need to convert
QFuture<T> to T. Use the explicit QFuture<void>(const QFuture<T> &)
constructor to convert QFuture<T> to QFuture<void>.
Change-Id: I153d4137d36365b1611ac934fb3ac2eb667fdd6c
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
Test runWithPromise with "then" and "onCanceled" handlers.
Test the case when QFuture::cancel() is being called when
the task's thread already started, so that a call to
QPromise::isCanceled() from inside the running thread
returns different values in the same task's run. This nicely
proves that communication between QFuture and QPromise
works between different threads.
Task-number: QTBUG-84868
Change-Id: Icb2e0b1f99e2dcd919d881515f1ccd08e2f25b8c
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
For the comparison of a QFuture<int> and an int, gcc creates code that
creates a qfloat16 instance, as can be seen when stepping through this
code:
QFuture<int> future;
int five = 5;
if (future == five)
return five;
Explicitly get the result of the QFuture to compare as a workaround.
Change-Id: Id2adc2268dbc0ccec7df3a9786c9d29dcdc04da3
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Please note, that in case of run with promise it doesn't make
sense to provide the overload taking the FutureResult, as if we are
going to ignore the returned QFuture object, we can't communicate
with the passed QPromise.
Fixes: QTBUG-87083
Change-Id: I4066506736c2bbeea3e42030b9495f13e06cb27e
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
For historical reasons Qt Concurrent reports QUnhandledException in
case if an exception that is not derived from QException is thrown
from a worker thread. Changing this behavior may not be a good idea,
since the existing user code may rely on it. Changed QUnhandledException
to wrap the std::exception_ptr to the actual exception, so that the
users can obtain the information about the thrown exception if needed.
[ChangeLog][QtCore][QUnhandledException] Improved QUnhandledException to
store the std::exception_ptr to the actual exception thrown from a
QtCocnurrent worker thread.
Change-Id: I30e7c1d3e01aff6e1ed9938c421da0a888f12066
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
QList::parameter_type is defined and used to give better
performance e.g. for arithmetic types. Let's use it consistently
in QList API instead of const T &
Change-Id: I2e12bd83f55679b55a14fbb23ab6172a9cf7bbcc
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The test helpers are used both in the qtconcurrentmap tests and in the
qtconcurrentfilter tests. In the future, they should also be used
in generated tests. This patch moves the function out of the
qtconcurrentmap folder as it is not specific to 'map'.
Change-Id: Ie79a7ae3040a7eab7364a3aabf934158c7527b5a
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Using std::begin() and std::end() forces the user to have const begin()
and end() member functions being defined for the passed container. This
is because std::declval<T>() returns rvalue which forces the compiler
to select std::{begin, end}()(const Container &c) overloads and an test
for a presence of const {begin, end}() methods.
Change-Id: I9d96d9f73891ece53224f1741a1334500f7b35ad
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
QtConcurrent::filtered test-cases for move-only containers were failing
to compile, because it is assumed that the passed container should have
value_type defined.
Change-Id: I3e9e5ebc07704cb98a15b125ae8bd5b5a84d497a
Reviewed-by: Andreas Buhr <andreas.buhr@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
This time based on grepping to also include documentation, tests and
examples previously missed by the automatic tool.
Change-Id: Ied1703f4bcc470fbc275f759ed5b7c588a5c4e9f
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Unit tests are added to make sure QtConcurrent works on
move-only sequences.
Change-Id: I1d066f75ceab9cef98832e96c5827103cbfd72a8
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Changed QtConcurrent algorithms to take the passed sequences as
universal references, where it makes sense. In addition to avoiding
to create extra copies when passing rvalues, this change allows
passing temporary container adaptors to QtConcurrent::map (e.g. see
the example in the ticket and the new test-cases).
Task-number: QTBUG-83170
Change-Id: Ia7c0833f4ec1d860294fa5214cd53934b65ff084
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
QtConcurrent algorithms are making an internal copy of the passed
sequence, to make sure it won't be destroyed before the execution
is finished. However, they were using iterators of the originally
passed sequence. So, if the original sequence is deleted, QtConcurrent
algorithms would use invalid iterators to a deleted sequence. This
might work with Qt containers thanks to implicit-sharing, but with
other containers will lead to unexpected results. Fixed them to work
on the internal copy of the original sequence.
Change-Id: I1d68692ed9746223c85f51bb05977bc1443b681d
Reviewed-by: Andreas Buhr <andreas.buhr@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Karsten Heimrich <karsten.heimrich@qt.io>
Modify special case locations to use the new API as well.
Clean up some stale .prev files that are not needed anymore.
Clean up some project files that are not used anymore.
Task-number: QTBUG-86815
Change-Id: I9947da921f98686023c6bb053dfcc101851276b5
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Remove around 1000 compiler warnings about missing overrides
in our auto tests.
This significantly reduce the compiler warning noise in our auto
tests, so that one can actually better see the real problems
inbetween.
Change-Id: Id0c04dba43fcaf55d8cd2b5c6697358857c31bf9
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
The differences to run() method:
1. The passed function should have additional
argument QPromise<T> &, declared as a first argument.
2. The return value of the function must be void.
Result reporting should be done through
passed QPromise<T> &promise argument.
3. By default, runWithPromise() doesn't support functors
with overloaded operator()().
In case of overloaded functors the user
needs to explicitly specify the result type
as a template parameter passed to runWithPromise,
like:
struct Functor {
void operator()(QPromise<int> &) { }
void operator()(QPromise<double> &) { }
};
Functor f;
runWithPromise<double>(f); // this will select the 2nd overload
Task-number: QTBUG-84702
Change-Id: Ie40d466938d316fc46eb7690e6ae0ce1c6c6d649
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Use pro2cmake with '--api-version 2' to force regenerate
projects to use the new prefixed qt_foo APIs.
Change-Id: I055c4837860319e93aaa6b09d646dda4fc2a4069
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Replace the implementation of blockingMappedReduced():
after calling non-blocking version of mappedReduced() we are getting
the future object, so we may call in sequence result(), which
will block and return the result when the all tasks are done.
The same is done with blockigMapped(), which calls blockingMappedReduced()
with a custom reduce function.
Looks like with this pattern we can reuse the non-blocking version
for implementing blocking version of mapped / filtered methods.
Task-number: QTBUG-83918
Change-Id: I7f240cfbd04834d551ff79d717b72194a26996d7
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Test the case where reduce function of the form:
V function(T &result, const U &intermediate)
has T and U types different.
Task-number: QTBUG-83802
Change-Id: Ic89396caba16e7e47ae3ec1527e31b8620f1b08c
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Get rid of code repetition in concurrentfilter test.
Move tests with initial value next to their original version.
Join new lambda tests into a common functions
testing all possible 16 combinations of
functor / function / member / lambda, as they
test in fact the same function. There is no need
to distinguish lambda case over other cases.
This helps in test readability and maintenance.
Add missing tests for lambdas with a combination
of initial value.
Task-number: QTBUG-83802
Change-Id: I45930c1e18a9e4e561909f46a5cbbdf0ad7ba333
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
After adding new tests, the source code of tst_concurrentmap
grows rapidly with copy/paste/replace pattern.
This intoduce the issue with maintaining the test.
Get rid of separate functions for testing blocking versions
of mapped/mappedReduced and test blocking versions in parallel
with non-blocking flavors. So again, get rid of duplicated code.
Task-number: QTBUG-83258
Change-Id: I4cac6f4e1bfd1b50363dc094610717674aebf2af
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Test the case where reduce function of the form:
V function(T &result, const U &intermediate)
has T and U types different. Make use of
numberSumReduce function and corresponding functor
that reduce Number class object to the result of int type.
Fixes: QTBUG-83258
Change-Id: I194d290988b48e7bca91228c0cd5d39efd1b4712
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Move tests with initial value next to their original version.
Join new lambda tests into a common functions
testing all possible 16 combinations of
functor / function / member / lambda, as they
test in fact the same function. There is no need
to distinguish lambda case over other cases.
This helps in test readability and maintenance.
Add missing tests for lambdas with a combination
of initial value.
Task-number: QTBUG-83258
Change-Id: I7a3d2bf87384d7feecffaaf39281cd626955b0a4
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
* support lambda expressions
* remove the need to specify result_type
* use std::invoke to apply map|filter function
* remove usage of FunctionWrapper* and createFunctionWrapper
Task-number: QTBUG-33735
Task-number: QTBUG-82646
Change-Id: Ibcbe4278f0742c29182bd506081db0abb516f85f
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
* Replaces the, only internaly used, implementation of template
class Median with a fixed size none templated version.
* Replaces BlockSizeManager with an updated BlockSizeManager V2,
but keeping the original name.
* adapt the auto-test to take the fixed size array into account
Change-Id: If76cb944676c4a06a7566ad0bc37ded25b81c70c
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
[ChangeLog][Potentially Source-Incompatible Changes] QtConcurrent::run
has the following signatures: run(Function &&f, Args &&...args) and
run(QThreadPool *pool, Function &&f, Args &&...args). If f is a member
pointer, the first argument of args should be an object for which that
member is defined (or a reference, or a pointer to it). See the
documentation for more details.
Fixes: QTBUG-82383
Change-Id: I18f7fcfb2adbdd9f75b29c346bd3516304e32d31
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
It takes any type which is implictly covertible to the result type
and then converts it in the outer-layers. Then it passes it into the
deeper layers and initiales the result value.
One drive-by fix with a missing letter in the documentation.
[ChangeLog][QtConcurrent] QtConcurrent::mappedReduce and
QtConcurrent::filteredReduced, as well as their blocking variants,
now optionally take an initial value.
Fixes: QTBUG-73240
Change-Id: I7a80d96693cfa3374847c75c75b3167664609c1a
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
