It doesn't make sense to have a recursive QSet with deleted operator==,
since it's not possible to add elements to it. Consequently declaring a
metatype for it also doesn't make sense. Remove the commented
compile-time check for it.
Task-number: QTBUG-96257
Change-Id: I74ebefb38adcbe36d5c2f317188743e1f37fe16d
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
When declaring metatypes, the metatype system tries to detect if the
comparison operators for the given type exist and automatically register
them. In case of QHash, the equality operator was enabled if the value
type provides one. But the implementation needs equality operator of
the key type as well. As a result, when the key type has no equality
operator, the metatype system detects that the equality operator is
available for the QHash itself, but the compilation for metatype
registration fails when trying to instantiate the code that uses
equality operator for the key. This is fixed by enabling equality
operators for the QHash only when both the key and value types provide
one.
The same issue existed also for QMultiHash, with the difference, that
QMultiHash didn't have the constraints even on the value type. So added
checks for both.
Fixes: QTBUG-96256
Pick-to: 6.2
Change-Id: Ib8b6d365223f2b3515cbcb1843524cd6f867a6ac
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Being a test, I'm going to abuse operator-> on end() to check
that we get what we want (a pointer past the end).
Change-Id: I7ab8d017b0fe320018820eff336d496328ade481
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Because of the addition of the operator T*(), the expression "it + N"
where N was not exactly qsizetype but any other integer type was a
compilation failure because of ambiguous overload resolution.
With GCC it's apparently a warning:
warning: ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the second:
note: candidate 1: ‘QList<T>::iterator QList<T>::iterator::operator+(qsizetype) const [with T = char; qsizetype = long long int]’
note: candidate 2: ‘operator+(char*, ptrdiff_t {aka long int})’ (built-in)
With Clang, it's an error:
error: use of overloaded operator '+' is ambiguous (with operand types 'QList<int>::const_iterator' and 'ptrdiff_t' (aka 'long'))
note: candidate function
inline const_iterator operator+(qsizetype j) const { return const_iterator(i+j); }
note: built-in candidate operator+(const int *, long)
Pick-to: 6.2
Fixes: QTBUG-96128
Change-Id: Ie72b0dd0fbe84d2caae0fffd16a06f23dd56b060
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Less clunky due to having better constexpr support, plus fold
expressions.
Change-Id: I3eb1bd30e0124f89a052fffd16a6bc73ba79ec19
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
This patch removes most of the checks that are made using C++20
__cpp_* macros for features available in C++17 and earlier.
Library feature check macros (__cpp_lib_*) are unaffected.
Change-Id: I557b2bd0d4ff09b13837555e9880eb28e0355f64
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
- process environment/DNS are OFF for INTEGRITY
Task-number: QTBUG-96176
Pick-to: 6.2
Change-Id: I189a97f88c96a428586c31a66b8d250e04482900
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
It is no longer handled separately from Android.
This effectively reverts commit 6d50f746fe
Change-Id: Ic2d75b8c5a09895810913311ab2fe3355d4d2983
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
This ensures that a command such as
$ ninja tst_qlocale && ninja tst_qlocale_check
will automagically build the syslocaleapp program that the test runs
from a subtest. Similar for testlib's selftests and tst_QProcess.
As a drive-by, pruned some legacy comments from when CMakeLists.txt
files were generated from .pro files.
Change-Id: I67691a8175aaef124d4104cf1898193993408bdf
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
The operator checks cause compilation errors when trying to check for
their existence for recursive containers. This happens because of trying
to check for the operators on the template parameter type(s), that
inherit from the container itself, which leads to compilation errors.
Introduced alternative versions of the operator checks (with _container
suffix), that first check if the container is recursive, i.e. any of its
template parameter types inherits from the given container, and skips
the operator check, if that's the case.
The fix is done for all Qt container types that had the problem, except
for QVarLengthArray and QContiguousCache, which don't compile with
recursive parameter types for unrelated reasons.
Fixes: QTBUG-91707
Pick-to: 6.2 6.1
Change-Id: Ia1e7240b4ce240c1c44f00ca680717d182df7550
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
When trying to fix 0-length matches at the end of a QString,
be83ff65c4 actually introduced a
regression due to how lastIndexOf interprets its `from` parameter.
The "established" (=legacy) interpretation of a negative `from` is that
it is supposed to indicate that we want the last match at offset `from +
size()`. With the default from of -1, that means we want a match
starting at most at position `size() - 1` inclusive, i.e. *at* the last
position in the string. The aforementioned commit changed that, by
allowing a match at position `size()` instead, and this behavioral
change broke code.
The problem the commit tried to fix was that empty matches *are* allowed
to happen at position size(): the last match of regexp // inside the
string "test" is indeed at position 4 (the regexp matches 5 times).
Changing the meaning of negative from to include that last position (in
general: to include position `from+size()+1` as the last valid matching
position, in case of a negative `from`) has unfortunately broken client
code. Therefore, we need to revert it. This patch does that, adapting
the tests as necessary (drive-by: a broken #undef is removed).
Reverting the patch however is not sufficient. What we are facing here
is an historical API mistake that forces the default `from` (-1) to
*skip* the truly last possible match; the mistake is that thre is simply
no way to pass a negative `from` and obtain that match. This means that
the revert will now cause code like this:
str.lastIndexOf(QRE("")); // `from` defaulted to -1
NOT to return str.size(), which is counter-intuitive and wrong. Other
APIs expose this inconsistency: for instance, using
QRegularExpressionIterator would actually yield a last match at position
str.size(). Similarly, using QString::count would return `str.size()+1`.
Note that, in general, it's still possible for clients to call
str.lastIndexOf(~~~, str.size())
to get the "truly last" match.
This patch also tries to fix this case ("have our cake and eat it").
First and foremost, a couple of bugs in QByteArray and QString code are
fixed (when dealing with 0-length needles).
Second, a lastIndexOf overload is added. One overload is the "legacy"
one, that will honor the pre-existing semantics of negative `from`. The
new overload does NOT take a `from` parameter at all, and will actually
match from the truly end (by simply calling `lastIndexOf(~~~, size())`
internally).
These overloads are offered for all the existing lastIndexOf()
overloads, not only the ones taking QRE.
This means that code simply using `lastIndexOf` without any `from`
parameter get the "correct" behavior for 0-length matches, and code that
specifies one gets the legacy behavior. Matches of length > 0 are not
affected anyways, as they can't match at position size().
[ChangeLog][Important Behavior Changes] A regression in the behavior of
the lastIndexOf() function on text-related containers and views
(QString, QStringView, QByteArray, QByteArrayView, QLatin1String) has
been fixed, and the behavior made consistent and more in line with
user expectations. When lastIndexOf() is invoked with a negative `from`
position, the last match has now to start at the last character in the
container/view (before, it was at the position *past* the last
character). This makes a difference when using lastIndexOf() with a
needle that has 0 length (for instance an empty string, a regular
expression that can match 0 characters, and so on); any other case is
unaffected. To retrieve the "truly last" match, one can pass a
positive `from` offset to lastIndexOf() (basically, pass `size()` as the
`from` parameter). To make calls such as `text.lastIndexOf(~~~);`, that
do not pass any `from` parameter, behave properly, a new lastIndexOf()
overload has been added to all the text containers/views. This overload
does not take a `from` parameter at all, and will search starting from
one character past the end of the text, therefore returning a correct
result when used with needles that may yield 0-length matches. Client
code may need to be recompiled in order to use this new overload.
Conversely, client code that needs to skip the "truly last" match now
needs to pass -1 as the `from` parameter instead of relying on the
default.
Change-Id: I5e92bdcf1a57c2c3cca97b6adccf0883d00a92e5
Fixes: QTBUG-94215
Pick-to: 6.2
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Take the rvalue insert() function and turn it into the emplace()
function. Reformulate rvalue-insert using emplace(). Lvalue insert()
is using a different code path, so leave that alone. This way, we
don't need to go overboard with testing.
[ChangeLog][QtCore][QVarLengthArray] Added emplace(), emplace_back().
Change-Id: I3e1400820ae0dd1fe87fd4b4c518f7f40be39f8b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
C++20 deprecated compound volatile statements such as pre- and
post-increments, to stress that they're not atomic. So instead of
volatile i;
~~~~;
++i;
you're now supposed to write
volatile i;
~~~~;
int j = i; // volatile load
++j;
i = j; // volatile store
which matches more closely what hardware does.
Instead of fixing every use of volatile pre- or post-increment in this
fashion individually, and realising that probably a few more Qt
modules will have the same kind of code patterns in them, write
QtPrivate functions to do the job centrally.
Change-Id: I838097bd484ef2118c071726963f103c080d2ba5
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
We missed the chance of deprecating them in 5.15, so
they'll just add to the pain of porting to 6.0. We
should not keep them around forever, though; QMap isn't
random access and so its iterators should only have
bidirectional APIs.
Pick-to: 6.2
Fixes: QTBUG-95334
Change-Id: I3577f7d25e8ab793722d2f220fd27bc85c622b0d
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
QHash::squeeze() was unconditionally calling reserve(0), which is
always allocating memory (even for 0 size).
This was leading to a confusing situation when calling squeeze() on
a default-constructed container with 0 capacity() actually allocated
memory. This is very misleading, as squeeze() is supposed to free
unneeded memory, not to allocate more.
This patch adds a check for non-zero capacity. As a result, nothing
is done for default-constructed container.
Note that this patch also affects the QSet::squeeze() behavior, because
QSet uses QHash as its underlying data type.
Task-number: QTBUG-91736
Pick-to: 6.2 6.1
Change-Id: Ib1c3c8b7b3de6ddeefea0e70b1ec71803e8fd3b3
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Andreas Buhr <andreas.buhr@qt.io>
This reverts commit c19695ab95.
Just because QSet has limited API doesn't mean we can't provide this
in an efficient way for std::unordered_set :P
Added tests.
Pick-to: 6.2
Change-Id: I4f8f0e60c810acdc666cf34f929845227ed87f3b
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
This patch introduces some test improvements to check the calls of
different methods on an empty default-constructed container.
Apart from that, many other tests are added to extend code coverage.
Task-number: QTBUG-91736
Pick-to: 6.2 6.1
Change-Id: Icc1f1342738603c9bed065b2a36c72ea60b48962
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Extend tests to explicitly check the behavior of empty
default-constructed container.
Also add some missing tests to increase the code coverage.
Task-number: QTBUG-91736
Pick-to: 6.2 6.1
Change-Id: Ie57b5d13fad9a846c29c87be4985c87e69bba305
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Extend tests to explicitly check the behavior of empty
default-constructed containers.
Also add some missing tests for the existing methods
(mostly for QMultiHash) and correct some end()s to cend()s
in comparisons.
Task-number: QTBUG-91736
Pick-to: 6.2 6.1
Change-Id: Ic9e1b86ef67f6bca2751a65a8589b2f7e0ebb5ea
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
This patch mostly introduces some test improvements to check the
calls of different methods on an empty default-constructed
container.
Apart from that some other tests are added to extend test
coverage.
Task-number: QTBUG-91736
Pick-to: 6.2 6.1
Change-Id: If2bc96158462292bbdf8504942141af94568c729
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Extend tests to explicitly check the behavior of empty
default-constructed container.
Also add some missing tests to increase the code coverage.
Task-number: QTBUG-91736
Pick-to: 6.2 6.1
Change-Id: Ib3c3f5bcb967cd1031cb24ffceaa77a146212ffd
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>
The maximum size for a hash result is 64 atm. Even if, and esp when,
we'll get to 128 and 256 bytes in the future, there's no reason to use
dynamic memory, because the sizes will always be statically known.
So use, essentially, a std::array<char, 64> to hold the result
internally. Add a bit of convenience API on top to limit impact on the
rest of the code and add a few static_asserts that ensure this is large
enough. Then give users access to the internal buffer by adding
QByteArrayView resultView() const noexcept. The documentation snippet
is taken from QString::data(), suitably adjusted.
Use resultView() in a few places instead of result().
[ChangeLog][QtCore][QCryptographicHash] Changed to use a
statically-sized buffer internally. Added resultView() to access it.
Change-Id: I96c35e55acacbe94529446d720c18325273ffd2f
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
It timed out the other day on the CI. Even the SHA-1 check took 137s
(with a 300s timeout). Skip the SHA-512 test on the CI, but keep it
for manual runs.
Pick-to: 6.1 6.2
Change-Id: I49792ac9bcab6512e1803f66cd986b2830e634c0
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Extend tests to explicitly check the behavior of empty
default-constructed container.
Also add some missing tests to increase the code coverage.
Task-number: QTBUG-91736
Pick-to: 6.2 6.1
Change-Id: I5b418265fc7cb3e56e44782be7704d642923a8e9
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
This prevents us from first reserve()ing Prealloc elements, and then
possibly reserve()ing a larger number, which leaves the first bucket
list's memory unused.
Consequently, deprecate reserve().
Change-Id: Ifc0a5a021097f4589557e7b5e45d9d0892797ade
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
The ${QT_SOURCE_TREE}/src/network include paths of several tests are
apparently not needed anymore. Remove those.
tst_qfilesystementry and tst_qfreelist are the only tests that actually
need to reference files in qtbase's source tree. Simply use the paths
relative to the project file.
Task-number: QTBUG-88090
Change-Id: Ic6f341e001338c1b07dce6e58316245bc9560c5e
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
The method was never tested, but it failed to compile after
QMultiHash was introduced as a separate class in 6.0.
This patch fixes it and adds some unit-tests to cover the case.
Task-number: QTBUG-91736
Pick-to: 6.2 6.1
Change-Id: I5dd989d4775efc6a9bb13c5ed1d892e499d95dc2
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Do not detach when find(key, value) is called on an empty QMultiHash.
As a drive-by: fix return value for QMultiHash::remove() in case of
empty QMultiHash.
Task-number: QTBUG-91736
Pick-to: 6.2 6.1
Change-Id: I1e32f359e7ee9ce8403dae79d02e0b88a20ec4a5
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Use the ctor instead of appending 1'000'000 chars.
Introduce C++14 digit separators as a drive-by.
Change-Id: Icdbef3173f42d12ae2226b8556f9b1519e594adc
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Incl. the static hash() function. Remove the QByteArray versions from
the API, but not the ABI.
Adapt some callers.
[ChangeLog][QtCore][QCryptographicHash] Replaced QByteArray with
QByteArrayView in addData() and static hash() functions.
Change-Id: Ia0e9bf726276305e05894d323d76a29e985f39eb
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Need to decrement 'remaining' (check), but also increment data (meep).
Testing is a bit complicated, as most algorithms are just too slow to
fit into the 5min QTestLib timeout. Picked the fast ones and Sha512
(which completes here in < 17s, with threads), at least.
Amends e12577b563.
[ChangeLog][QtCore][QCryptographicHash] Fixed a bug where presenting
more than 4GiB in a single addData() call would calculate the wrong
result().
Pick-to: 6.1 6.2
Change-Id: Ic72916ebc33ba087d58225af6d8240e46e41f434
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
When the element you want to erase is the last element AND the
next element (element 0), when rehashed, would be relocated to the last
element, this leads to the state below. Which is similar to a test in
tst_qhash for some seeds.
auto it = hash.begin + (hash.size - 1)
it = hash.erase(it)
it != hash.end
By forcing the iterator to increment if we were erasing the last element
we always end up with a pointer which is equal to hash.end
Befriend the tst_qhash class so we can set the seed to a known-bad one
Pick-to: 6.2 6.1
Change-Id: Ie0b175003a2acb175ef5e3ab5a984e010f65d986
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Small change needed to make QString_char16 and QString_QChar return -1
in this case, but other combinations already returns -1.
[ChangeLog][QtCore][Behavior Change] QString::indexOf(QChar) and
QString::indexOf(char16_t) now treat a negative start-position, from,
bigger than the string's size as invalid. It previously
clipped such start-positions to the start of the string, inconsistently
with other QString indexOf overloads.
Change-Id: Ic56c8a558bf40a94845c649647db569892d4df02
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
There were two problems here: first, qHash(std::pair) must be declared
before qHashMulti that might call back to qHash(std::pair) (i.e., a pair
with one element that is also a pair). But moving the declaration above
causes the second problem: the noexcept expression can't refer to qHash
functions that aren't declared yet. So we forward-declare a constexpr
function for that result, but implement it far below.
Fixes: QTBUG-92910
Change-Id: Ia8e48103a54446509e3bfffd16767ed2e29b026c
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Commit 37e0953613 added a to-do, but we
can actually change the type, since we've documented since Qt 5.10 that
setting a non-zero value (aside from -1) with qSetGlobalQHashSeed was
not allowed. Storing a value to be reset later is simply not supported.
Change-Id: Id2983978ad544ff79911fffd1671f7b5de284bab
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
There's no reason to be storing `int` in the array data header and
then using it as a QFlags. Just store the QFlags.
Change-Id: I78f489550d74d15a560dacf338110d80a7ddfdd2
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The comparison between nullptr and QWeakPointer was just bogus
and ill-formed. The INTEGRITY compiler catches that even if
nothing tries to use the comparison. It is an ill-formed, no
diagnostic required case of a function template never being
able to produce a valid specialization. And while we're at
it, this patch makes the result of comparing a nullptr to
a QWeakPointer or vice versa the same as asking .isNull() from
the weak pointer, because it seems mind-boggling if those
are not the same operation.
Task-number: QTBUG-93093
Change-Id: I0cc80e795c9af2be1b76de05157aa458ef260f2e
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The major part is stability tests for QList operations,
Also added std::shared_ptr to the Custom type. shared_ptr
accesses the memory which does not directly belong to
QList, so using it inside a passed-to-qlist type is
beneficial (e.g. ASan could catch extra issues)
Basic prepend-aware cases added to QString/QBA tests
Task-number: QTBUG-93019
Change-Id: I50e742bdf10ea9de2de66539a7dbb9abc4352f82
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
(cherry picked from commit adb41bbe00b2b853d4dd26cd9ee77ae5ed541576)
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Test the relocation logic through the QADP::relocate() method which
basically calls q_relocate_overlap_n inside and then ensures that
the data pointers are in good state
Running these locally in fact revealed a bug in the implementation,
so these tests are definitely good to have
Task-number: QTBUG-93019
Change-Id: I353ed46a31c5c77cd0c5fcacd3dfce46e5cf3e67
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
(cherry picked from commit 65d0f6829cc124f6d0d4003a17bedcb74dddf33b)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
Use the data moves to readjust the free space in the QList,
which ultimately fixes the out-of-memory issues caused by
cases like:
forever {
list.prepend(list.back());
list.removeLast();
}
Task-number: QTBUG-91801
Task-number: QTBUG-91360
Task-number: QTBUG-93019
Change-Id: Iacff69cbf36b8b5b176bb2663df635ec972c875c
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
(cherry picked from commit a0253f5f0249024580050e4ec22d50cb139ef8d9)
The six properties duration, updateInterval, currentTime,
direction, loopCount and easingCurve have been ported to the
new property system and are now bindable.
Drive-by renamed a local variable to avoid shadowing.
Task-number: QTBUG-85520
Change-Id: Ibabf106f5200d2dd4329a1e1f96112eccc29d6b1
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
QList tests have mostly a scheme of:
void opInt() { op<int>(); }
void opMovable() { op<Movable>(); }
void opCustom() { op<Custom>(); }
As a drive by, move the leak checking into a separate struct/macro
Change-Id: I7cdda3a6c2aa324968aa26594da9f9eafbd49a0a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
With C++20, there is a new iterator_category: contiguous_iterator, for
containers whose elements are stored contiguously in memory. In Qt 6,
QList satisfies this requirement.
However, we still need to tell the standard machinery about it. Step one
is to mark the iterators as contiguous_iterator; as that exists only in
C++20, we have to ifdef accordingly.
We also have to ensure that the iterators satisfy pointer_traits by
defining element_type due to how contiguous_range is specified. As this
runs afoul of LWG 3346, we check for known bad _GLIBCXX_RELEASE
versions.
Change-Id: I8c134544e694ba937e4d912393eb72fa75b49e3d
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
qtbug_xxxxx is a fairly ambiguous test name
Change-Id: I4b407160464c9b8300d3683549b0ede837161e7b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
As QMultiHash uses a pointer for the data, nullptr dereference is a
thing, so check for valid d before doing anything in count()
Fixes: QTBUG-91704
Pick-to: 6.0 6.1
Change-Id: Ia20440cd7bdc03cb09c77f796fb9c5b52765eac5
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
After QPoint(F), it's now the time of QSize(F) and QVectorND,
which can be unambiguously decomposed.
[ChangeLog][QtCore][QSize] QSize is now usable in a structured
binding declaration.
[ChangeLog][QtCore][QSizeF] QSizeF is now usable in a structured
binding declaration.
[ChangeLog][QtGui][QVector2D] QVector2D is now usable in a
structured binding declaration.
[ChangeLog][QtGui][QVector3D] QVector3D is now usable in a
structured binding declaration.
[ChangeLog][QtGui][QVector4D] QVector4D is now usable in a
structured binding declaration.
Change-Id: I67bb152f4210f2be27607179cd2ec522174cc483
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
It's the QScopedPointer test, so we want to test deprecated APIs.
Change-Id: I029103b3150c576cba9b395aafc571b9fccc914a
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Somehow QList::fill(t, newSize) introduced a regression in Qt6:
when newSize < QList::size() we should resize to the newSize.
This is aligned with QVector::fill() in 5.15 and std::vector::assign()
While 6.0 is already out, picking it to 6.0.x could save someone who
haven't migrated yet as well as fix some accidental bugs in Qt's code
[ChangeLog][QtCore][QList] Fixed QList::fill() regression introduced in
6.0: calling fill() with size < current list size wouldn't truncate the
list
Fixes: QTBUG-91042
Pick-to: 6.0 6.1
Change-Id: Ic166e2c5e42390b61df1030f7c705e344433f7f2
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Make stricter alignment requirements for the allocated header
This strict alignment allows reallocateUnaligned() to property account
for the padding occurring in cases when
alignof(QArrayData) < alignof(T) <= alignof(std::max_align_t), which
happens to be the case on e.g. 32-bit platforms with specific alignment
requirements.
This adds 4 bytes (the difference between alignof(std::max_align_t) and
sizeof(QArrayData)) of overhead for QString, QByteArray and certain QLists
on 32-bit systems.
Task-number: QTBUG-90359
Pick-to: 6.0
Change-Id: I8176a4cc79f100ee772b09425e88fe8ff3ae226a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
The delta was clearly intended to be used on the total (and still is)
but it also wound up getting stored in the cache, which wouldn't be a
big problem unless the object was removed, in which case we could
incidentally 'free up more space' than intended.
Pick-to: 6.0
Change-Id: Ib2b0f072d30da6d16a93dce60e4c5f6080c109fc
Reviewed-by: Lars Knoll <lars.knoll@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>
The test case fails also on QEMU ARMv7.
Task-number: QTBUG-88705
Change-Id: Ibe8c777f0205b298f6b9a27c067dd552253fcf33
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
QMultiHash::equal_range crashes when called in a const member function.
The Data `d` is a NULL pointer when calling equal_range()
before inserting data into an empty QMultiHash.
Then calling`d->find` crashes.
Fixes: QTBUG-89687
Pick-to: 6.0
Change-Id: I10c3d196cbc72aed8c8c922ef16534bba51037b7
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Previously it only worked when isNull() was false, which is true for
very short lines, even though length() may be non-zero.
[ChangeLog][QtCore][QLineF] QLineF::setLength() will now set the
length if the line's length() is non-zero. Previously, it was
documented to only set the length if isNull() was false; this is a
fuzzy check, so isNull() could be true for a line with non-zero
length().
Fixes: QTBUG-89569
Pick-to: 6.0 5.15
Change-Id: I803e622ad09c85815dde25df8dd3ba6dfcba0714
Reviewed-by: Lars Knoll <lars.knoll@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>
After 6be398 few tests fail/crash with qtcharts.
Fix issue on reallocateAndGraw and avoid accessing
flags on invalid header.
Data::allocate can return invalid header and dataptr,
which takes place if capacity is 0. In code before 6be398
clone method checks if header is not null before resetting
flags. However after b76fbb4 resetting flags is no longer
needed since it is done in allocateGrow.
Task-number: QTBUG-89092
Pick-to: 6.0
Change-Id: I2fde781dad7a0694a5f17ab716f647c2e35f4ff0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
After f08492c6fd was
merged this bug would manifest as an entry appearing twice
in the chain when a updating an existing entry (insert with
an existing key). This could sometimes result in crashes later
as the list filled up and the list was used in trim() to remove
various entries.
Fixes: QTBUG-89176
Pick-to: 6.0
Change-Id: Ide80160fb4317dc0aefe79eec5dce7ec6813e790
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Use a trick similar to the one we use for their ranged
constructors: support predicates that either take a
container's iterator, or that take a std::pair (for STL
compatibility).
[ChangeLog][QtCore][QMap] Added removeIf() and erase_if().
[ChangeLog][QtCore][QMultiMap] Added removeIf() and erase_if().
[ChangeLog][QtCore][QHash] Added removeIf() and erase_if().
[ChangeLog][QtCore][QMultiHash] Added removeIf() and erase_if().
Change-Id: Ie40aadf6217d7a4126a626c390d530812ebcf020
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
We already have all we need in QHash to support this, so the addition
is simple enough.
Add test checking how many copies and/or moves are needed for a single
insert.
As a drive-by: remove some unneeded static_cast
Change-Id: Iaf768657644afa45f78f5c81ffcf89ba9607be96
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
In preparation for the next changes.
Change-Id: Ibe0635dfa040842073749aa3e2ae140f27dc983a
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
It didn't initially have tests. To avoid relying on realizing
breakage implicitly through other classes we'll just add tests instead.
Task-number: QTBUG-88183
Pick-to: 6.0
Change-Id: I7449dc1f9a118d4b7a8158a2c34563dbd9c43c66
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
In addition (and as a fallback) from requiring qHash, add support
for std::hash specializations. This catches two birds with one stone:
1) users of Qt can simply specialize std::hash for their datatypes,
and use them in both QHash and stdlib unordered associative containers;
2) we get QHash support for any (stdlib) datatype that is hashable
without having to overload qHash for them.
[ChangeLog][QtCore][QHash] QHash, QMultiHash and QSet now support
for key types anything that can be hashed via std::hash, instead of
always requiring a qHash() overload.
Change-Id: Ib5ecba86e4b376d318389500bd24883ac6534c5f
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Q_MOVABLE_TYPE was conceived before C++ had move semantics. Now, with
move semantics, its name is misleading. Q_RELOCATABLE_TYPE was
introduced as a synonym to Q_MOVABLE_TYPE. Usage of Q_MOVABLE_TYPE
is discouraged now. This patch replaces all usages of Q_MOVABLE_TYPE
by Q_RELOCATABLE_TYPE in QtBase. As the two are synonymous, this
patch should have no impact on users.
Pick-to: 6.0
Change-Id: Ie653984363198c1aeb1f70f8e0fa189aae38eb5c
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
The right include is QTest, QtTest drags in all of QtCore.
Change-Id: Icc2964ccdb85fe1bfc9fe8f43351a4605a34329b
Pick-to: 6.0 5.15
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
- Add test for static hash() method
- Add tests for addData() overloads
- Add input data for sha384 and sha512
Task-number: QTBUG-88183
Change-Id: I7e16419b3a582468fd1de15613e1157af428bc4c
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
[ChangeLog][QtCore][QMargins] QMargins is usable in a structured
binding.
[ChangeLog][QtCore][QMarginsF] QMarginsF is usable in a structured
binding.
Change-Id: I0c501847b9377c47bd0e63da3735792075bd0079
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QPoint(F) are "naturally" destructurable in their x/y
counterparts (hello Mac/Carbon users, we don't live in 1999
any more, it's x and then y, and not vice versa...).
[ChangeLog][QtCore][QPoint] QPoint is usable in a structured
binding.
[ChangeLog][QtCore][QPointF] QPointF is usable in a structured
binding.
Change-Id: I8718a4e80be4ce03f37f012034f1fba009304b32
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The low level implementation does not use it at all, so there's no
point having the iterator in QTypedArrayData. Having it in QList removes
and indirection and will lead to clearer error messages.
Change-Id: I4af270c3cdb39620e5e52e835eb8fe1aa659e038
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Fold the two overloads into one, and distinguish the cases using
if constexpr. Do not overload QArrayOps::copyAppend(), to make it
clear which one is being used.
Change-Id: If6a894841aacb84ba190fb2209246f5f61034b42
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Bring it in line with the other methods that also take a
pointer and a size.
Also use truncate() in removeAll() as that's more efficient
for the use case.
Change-Id: Ib1073b7c048ceb96fb6391b308ef8feb77896866
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
emplace() itself now handles those cases fast enough, so there
should not be a need to add special code paths for those methods.
Change-Id: I3277eb77dd54194e46f96f24de44d7785a6f860a
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Avoid duplicated code paths for GrowsForward vs
GrowsBackward. Special case emplaceing at the
beginning or end of the awrray where we can
avoid creating a temporary copy.
Change-Id: I2218ffd8d38cfa22e8faca75ebeadb79a682d3cf
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Avoid ever having to call a destructor and unify the code for
insertion at the front or at the end.
Change-Id: Ie50ae2d4a75477cfdae9d5bd4bddf268426d95b5
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
QList::insert() should never need to call a destructor. This
requires that we construct the new items in the list in order
and increment the size each time we constructed a new item.
Not having a code path that potentially calls destructors should
avoid the generation of lots of additional code for those
operations. In addition, the forward and backwards code paths
are now unified and only require somewhat different setup of
some variables at the start.
This gives us strong exception safety when appending one item,
weak exception safety in all other cases (in line with std::vector).
Change-Id: I6bf88365a34ea9e55ed1236be01a65499275d150
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
When appending multiple items, we are fine with providing
weak exception safety only. This implies that we can simplify
the moveAppend() code and avoid having to potentiall
call destructors in there.
Change-Id: I31cef0e8589e28f3d3521c54db3f7910628e686f
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Types that throw in their destructors are strongly discouraged in C++,
and even the STL doesn't define what happens if such types are stored
in their containers.
Make this more explicit for Qt and disallow storing those types in our
containers. This will hopefully preempty any potential future bug
reports about us not handling such a case. It also helps simplify
some code in QList and other cases and makes it possible to explicitly
mark more methods as noexcept.
Some care needs to be taken where to add the static asserts, so that
we don't disallow forward declarations of types stored in containers.
Place the static assert into the destructor of the container where
possible or otherwise into the templated d-pointer.
Change-Id: If3aa40888f668d0f1b6c6b3ad4862b169d31280e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
QExceptionSafetyPrimitives::Destructor doesn't need an additional
template argument, and the freeze() method was unused.
Some methods of the Constructor class could also be simplified.
Change-Id: Iacf35bc8634f402519a8bd875b5efea7841f9db5
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Unify it with the code in QArrayDataOps and only have one
emplace method there that handles it all.
Adjust autotests to API changes in QArrayDataOps and fix a
wrong test case (that just happened to pass by chance before).
Change-Id: Ia08cadebe2f74b82c31f856b1ff8a3d8dc400a3c
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Have one generic method for detaching and reallocations.
Use that method throughout QList to avoid duplicated
instantiations of code paths that are rarely used.
Change-Id: I5b9add3be5f17b387e2d34028b72c8f52db68444
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QChar should not be convertible from any integral type except from
char16_t, short and possibly char (since it's a direct superset).
David provided the perfect example:
if (str == 123) { ~~~ }
compiles, with 123 implicitly converted to QChar (str == "123"
was meant instead). But similarly one can construct other
scenarios where QString(123) gets accidentally used (instead of
QString::number(123)), like QString s; s += 123;.
Add a macro to revert to the implicit constructors, for backwards
compatibility.
The breaks are mostly in tests that "abuse" of integers (arithmetic,
etc.). Maybe it's time for user-defined literals for QChar/QString,
but that is left for another commit.
[ChangeLog][Potentially Source-Incompatible Changes][QChar] QChar
constructors from integral types are now by default explicit.
It is recommended to use explicit conversions, QLatin1Char,
QChar::fromUcs4 instead of implicit conversions. The old behavior
can be restored by defining the QT_IMPLICIT_QCHAR_CONSTRUCTION
macro.
Change-Id: I6175f6ab9bcf1956f6f97ab0c9d9d5aaf777296d
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Emplace() implemented with std::rotate is just awful on my system
(Ubuntu 18.04 GCC 7.5.0). Custom code is much faster, so go for
it. Cannot really use insert() code, which is also fast, because
it doesn't forward-reference values but copies them always
Changes in performance (approximately) for emplacing 100k elements
into the middle:
Complex 7600ms -> 1700ms
Movable 7600ms -> 200ms
Task-number: QTBUG-86583
Change-Id: If883c9b8498a89e757f3806aea11f8fd3aa3c709
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reaches into the internals to avoid erasing one entry at a time from the
QHash.
Change-Id: I47079592d130d2ecd844998dfa31e633e049d4c1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
We want to re-enable Android tests in QTQAINFRA-3867. However,
many tests are failing already preventing that from happening.
QTBUG-87025 is currently keeping track (links) to all of those
failing tests.
The current proposal is to hide those failing tests, and enable
Android test running in COIN for other tests. After, that try
to fix them one by one, and at the same time we can make sure
no more failing tests go unnoticed.
Task-number: QTBUG-87025
Change-Id: Ic1fe9fdd167cbcfd99efce9a09c69c344a36bbe4
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Use GrowsAt* and GrowthPosition as that is clearer.
Change-Id: I3c173797dec3620f508156efc0c51b4d2cd3e142
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
My endeavours figuring out why QList::append(elem) gives worst
performance compared to 5.15 ended up into this commit. After some
straightforward fixes, what was left is "everything is uniformly worse"
and takes more CPU cycles
Introduce emplaceBack implementation as append is quite a special case
that could be greatly simplified. This is a "straightforward" part of
the optimizations
While at it, change append(t) to use emplaceBack(t)
For workloads like:
QList<int> list;
forever {
list.append(0);
}
this gives huge improvement (roughly 30% for 10k+ elements),
movable and complex types also get a tiny speedup
Task-number: QTBUG-87330
Change-Id: I9261084e545c24e5473234220d2a3f2cd26c2b7f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Inline them into the one place they are called from
and remove duplicated code.
Change-Id: Ica88485e98625905083b16c24ee9eaf223a89ae0
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Get rid of the allocation options inside the flags
field of QArrayData, they are really a completely
separate thing.
Change-Id: I823750ab9e4ca85642a0bd0e471ee79c9cde43fb
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Don't use QArrayData::GrowsForward/Backward anymore and replace
it with a simple 'bool grow'.
Change-Id: Ifddfef3ae860b11dda4c40854c71ef2aeb29df34
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
reallocate() should only ever call realloc(), and only be used to
create more space at the end of the data.
Change-Id: I2ac4dbc90d2afaa571bb620108d7984356712cb2
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
The while insertion logic will need further work to make it
more efficient. Currently it does use copy construction and
assignment for internal moving instead of move operations.
Change-Id: I7ae3094daa43a44629d8fa89ab6562c2a21b6cbd
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Avoid moving data inside the array to create free
space at one end. This is a performance bottleneck,
as it required quite a lot of calculations for every
insert. Rather reallocate and grow in this case,
so we only need to do expensive work when we reallocate
the array.
Change-Id: Ifc955fbcf9967c3b66aa2600e0627aac15f0c917
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
It looks like we can drastically simplify the way QADP grows without
sacrificing much:
1. append-only use cases should have the same performance as before
2. prepend-only use cases should (with the help of other commits) get
additional performance speedup
3. mid-insertion is harder to reason about, but it is either unchanged
or benefits a bit as there's some free space at both ends now
4. mixed prepend/append cases are weird and would keep excess free
space around but this is less critical and overall less used AFAIK
Now, QList would actually start to feel like a double-ended container
instead of "it's QVector but with faster prepend". This commit should
help close the performance gap between 6.0 and 5.15 as well
As a drawback, we will most likely have more space allocated in mixed
and mid-insert cases. This needs to be checked
Task-number: QTBUG-86583
Change-Id: I7c6ede896144920fe01862b9fe789c8fdfc11f80
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
And add a QMultiHash::unite(const QHash &) method to avoid
a copy of the data when inserting a QHash into a multi hash.
Change-Id: I864aa9d2b9b7b2c367c3c4d140a2ce2f5408ae09
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The old code was trying to convert a multi hash to a QHash. While
that worked in Qt 5 it won't compile in Qt 6 anymore.
QHashCombineCommutative also can't be used with a std::pair.
ADL won't find the correct instance with a namespaced build,
as qHash(std::pair) is defined after QHashCommutative. Fix
the code to compile and work correctly.
Change-Id: Ice2bc3ab4244e310cbbb5e0f31fc11eb14f5faf3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
We now require C++17 and thus C++11 features or standard headers
should no longer be conditional.
Change-Id: I6b72306e809f71ec77acf7ffb97e2ed2ccd96e9d
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Implement the better rounding mechanism that was previously blocked
by requiring C++14 to be constexpr.
Change-Id: I4e5b179ce0703f5c0b41c3f0ea00d28dfe53740c
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Change types returned and accepted by capacity-related QArrayDataPointer
functions to qsizetype:
1) QArrayData (underlying d-ptr) works with qsizetype
2) QArrayDataPointer::size is of type qsizetype
3) All higher level classes that use QADP (e.g. containers)
cast capacity to qsizetype in their methods
Additionally, fixed newly appeared warnings through qtbase
Change-Id: I899408decfbf2ce9d527be7e8b7f6382875148fc
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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>
Use std::hypot() instead of sqrt() of a sum of squares.
This ensures length() can't be zero when isNull() is false.
Use length() in QLine::setLength() rather than duplicating that.
Clarify and expand some documentation; isNull() never said what
constituted validity, nor did unitVector() mention that is should not
be used on a line for which isNull() is true. Make clear that lines of
denormal length cannot be rescaled accurately.
Given that we use fuzzy comparison to determine equality of
end-points, isNull() can be false for a line with displacements less
than sqrt(numeric_limits<qreal>::denorm_min()) between the coordinates
of its end-points (as long as these are not much bigger); squaring
these would give zero, hence a zero length, where using hypot() avoids
the underflow and gives a non-zero length. Having a zero length for a
line with isNull() false would lead to problems in setLength(), which
uses an isNull() pre-test, protecting a call to unitVector().
(It was already possible for a null line to have non-zero length; this
now arises in more cases.)
Restored QLine::setLength() to the form it had before a recent change
to avoid division by zero (which resulted from underflow in computing
the length of a non-null line) but allow for the possibility that the
unit vector it computes as transient may not have length exactly one.
Add tests against {ov,und}erflow problems in QLine. Reworked the test
added during the divide-by-zero fix to make it part of the existing
test.
Pick-to: 5.15 5.12
Change-Id: I7b71d66b872ccc08a64e941acd36b45b0ea15fab
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>
To match QString and QByteArray behavior
Change-Id: Ifce4a5dee6fc9077e855a24499f11f911e359cf5
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
It was already used many places directly making the code inconsistent.
Change-Id: I3b14bc6c333640fb3ba33c71eba97e78c973e44b
Reviewed-by: Lars Knoll <lars.knoll@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>
Changes the definition of invalid QRects to be more consistent.
This simplifies the logic, and makes it possible for us to fix
normalized() so dimensions don't change.
The actual API is not changed except for inverted rects.
Only one use-case for the old normalized() function existed,
and has been reimplemented as QRect::span().
Fixes: QTBUG-22934
Change-Id: I29dad2952dc6c8e84a6d931898dc7e43d66780f3
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Change the rounding of negative half values to match standard C++
round, this will also allow future optimizations.
Change-Id: I8f8c71bed1f05891e82ea787c6bc284297de9c5c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
As per ### Qt6 comment. Also rename the LibraryLocation enum
to LibraryPath.
Change-Id: I556025a19c5bcdf2ff52598eaba32269522d4128
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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>
Updated moveNonPod function to behave correctly under
exceptions being thrown. This is the version that was implemented
at some point but then got changed prior to merge. Added tests for
moveInGrowthDirection (which uses moveNonPod in general case) to
verify that range movements are correctly done
Updated QCommonArrayOps access modifier from private to protected
to allow testing of internal stuff by subclassing
Task-number: QTBUG-84320
Change-Id: Idb994a72ee601762e32248670cdc7819aaca0088
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Scoped GrowsBackwards-optimized erase to only be applied
when erase starts at the beginning of the element range.
In other cases, old "left-shifting" erase is used to align
with std::vector::erase invalidation policy
Task-number: QTBUG-84320
Change-Id: I2e7f3b96b056bc371119eb2d36cc7c74af52c394
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
[ChangeLog][Source-Incompatible Changes] QProcess::setupChildProcess()
was removed. To execute code in a child process, use
QProcess::setChildProcessModifier()
[ChangeLog][QtCore][QProcess] Added setChildProcessModifier() function
with which one can provide code to be run in the Unix child process
between fork() and execve(). With this function, it is no longer
necessary to derive from QProcess in order to execute actions in the
child process.
Another reason is that we can tell whether the std::function carries a
valid target much more easily than we can tell whether QProcess was
overridden.
The setupChildProcess() virtual function does not need to be marked
final, since no overrider could ever return an inaccessible private
class. This also makes sure the error presented to the user is about the
return type, not about attempting to override a final.
Clang:
error: virtual function 'f' has a different return type ('void') than the function it overrides (which has return type 'QProcess::Use_setChildProcessModifier_Instead')
GCC:
error: conflicting return type specified for 'virtual void MyProcess::setupChildProcess()'
note: overridden function is 'virtual QProcess::Use_setChildProcessModifier_Instead QProcess::setupChildProcess()'
ICC:
error: return type is neither identical to nor covariant with return type "QProcess::Use_setChildProcessModifier_Instead" of overridden virtual function "QProcess::setupChildProcess"
MSVC is not relevant since it doesn't compile to Unix.
Change-Id: Ia8b65350cd5d49debca9fffd15f801161363aea7
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Since 5.0: assignment/construction from QObject pointer
Since 5.14: data() to recover the packaged pointer
Change-Id: I5d6ab561ce39bc0d9d3e5035eb2ca38139cd76b6
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
A large slice of it has been deprecated since 5.2.
Reflowed a doc paragraph pointed out, in the deprecation commit, as
having been left ragged by its edits.
Note: qSwap() is documented as \deprecated but not marked, where it's
defined, as deprecated.
Change-Id: Iaff10ac0c4c38e5b85f10eca4eedeab861f09959
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Restored previously deleted logic of setting GrowsBackwards flag for
prepend-like cases. This should be sufficient to fully enable prepend
optimization
Fixed QList::emplace to not use implementation detail logic. Updated
tests to cover changed behavior and its correctness
Task-number: QTBUG-84320
Change-Id: I4aadab0647fe436140b7bb5cf71309f6887e36ab
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Introduced prepend optimization logic to QCommonArrayOps.
Trying to rely on original QList behavior
Task-number: QTBUG-84320
Change-Id: I46e6797b4edad804a3e3edb58307c9e96990fe01
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Introduced allocation function in QArrayDataPointer with
interface similar to QArrayData::allocate that supports growing
strategies. This func is used instead of the original in cases
when prepend-aware storage is needed. Tried to follow Qt5 QList
policy in terms of space reservation
Updated QPodArrayOps::reallocate to be aware of growing
shenanigans. It doesn't look like a perfect solution but it is
rather close and similar to what Qt6 QList is doing when not
growing (e.g. reserve/squeeze)
Added initial QCommonArrayOps with helper function that tells
when reallocation is preferable over just using the insert-like
operation. This comes up later on when GrowsBackwards policy is
properly supported in operations
Essentially, 2/3 main data management blocks for prepend optimization
are introduced here. The last one being a generalized data move that
is done instead of reallocation when existing free space is not enough
Task-number: QTBUG-84320
Change-Id: I9a2bac62ad600613a6d7c5348325e0e54aadb73d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Remove QTypeInfo::isStatic, as that's not used anymore in Qt 6.
Also remove sizeOf, it's unused, and we have QMetaType for that if
required.
Remove all typeinfo declaractions for trivial types, as the default
template covers them correctly nowadays.
Finally set up a better default for isPointer, and do some smaller
cleanups all over the place.
Change-Id: I6758ed37dfc701feaaf0ff105cc95e32da9f9c33
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
And remove one of the type id to name mapping that still
existed in QMetaType. QMetaTypeInterface can provide that,
so there's no need to have a second copy of the data.
qMetaTypeTypeInternal() can still map all the names of all
builtin types to ids. That functionality is for now still
required by moc and can't be removed yet.
Change-Id: Ib4f8e9c71e1e7d99d52da9e44477c9a1f1805e57
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Export some private functions from QUtf8 to resolve
undefined symbols in Qt5Compat after moving QStringRef.
Task-number: QTBUG-84437
Change-Id: I9046dcb14ed520d8868a511d79da6e721e26f72b
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Just like any other container, it's legitimate for the user to
pass key/values belonging to the same container.
Q(Multi)Map::remove(Key) are already safe (either they call
erase() directly on std::(multi)map, where it does the right thing,
or they skip elements while detaching).
However, QMultiMap::remove(Key, T) wasn't safe in this regard
(the implementation is hand rolled), so take copies before start
erasing.
Change-Id: I87767d608b83216a6ff264fb6c8f145fdb5934f8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Added functions that tell how much free space is available at the
beginning and at the end of the storage
Updated preconditions of operations to use freeSpace* functions
Also, changed casts uint(this->size) to size_t(this->size)
Task-number: QTBUG-84320
Change-Id: Iad94c1060a00f62068da9d1327e332a00d4f4109
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Refactored certain bits of qarraydataops.h: picked exception-related
building blocks and put them into one place, (somewhat) documented
the usage, added tests
Personally, the existing code seemed rather complicated to analyze
(and do mental experiments for corner cases), especially when staring
at the whole thing for a while or "returning back" from some other work
and I still have my doubts that everything works correctly. Testing the
building blocks that are used should:
a) increase trust into existing code (provided the usage is correct)
b) give more use cases of how to use the building blocks, which in turn
would allow to compare and contrast tests vs implementation
Task-number: QTBUG-84320
Change-Id: I313a1d1817577507fe07a5b9b7d2c90b0969b490
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Updated insert() methods:
* Refined Q_ASSERT() checks
* Fixed implementation issues (some of which resulted in
actual crashes)
* Allowed to insert at the end. This is safe as far as I can
tell and actually would allow to simplify considerable chunks
of code (mainly, copyAppend versions to just return
insert at the end)
Updated tests accordingly
Change-Id: I0ba33ae5034ce8d5ff95b753894e95d71ba00257
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Extended existing tests with QArrayData's allocation options
Added extra tests on array operations covering append, insert,
emplace, erase and truncate. "Raw" QArrayDataPointer is used instead of
test-specific SimpleVector to check the behavior without some custom
logic in-between
The change targets future updates to array operations in the light of
prepend optimization: as the array operations would become more complex,
these tests should give a much better coverage (specifically due to
likely non-trivial implementation details and optimizations)
Task-number: QTBUG-84320
Change-Id: I6581e2cb48f81b82ee5052d1dcea3da2819df47a
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Both normal and relaxed constexpr are required by our new minimum of
C++17.
Change-Id: Ic028b88a2e7a6cb7d5925f3133b9d54859a81744
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
A few new files were added with old-school defines.
Change-Id: Ieb2c71e094e55102f3f39fb9551823f36863f5f4
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Receiving an rvalue still requires to check whether the parameter
is detached, otherwise we can't steal its backing std::map.
Change-Id: Ie88dbf39fd777112ad7bb20a46d5c2d65be8eb3d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
... and QMultiMap as std::multimap.
Just use the implementation from the STL; we can't really claim that
our code is much better than STL's, or does things any differently
(de facto they're both red-black trees).
Decouple QMultiMap from QMap, by making it NOT inherit from
QMap any longer. This completes the deprecation started in 5.15:
QMap now does not store duplicated keys any more.
Something to establish is where to put the
QExplictlySharedDataPointer replcement that is in there as an
ad-hoc solution. There's a number of patches in-flight by Marc
that try to introduce the same (or very similar) functionality.
Miscellanea changes to the Q(Multi)Map code itself:
* consistently use size_type instead of int;
* pass iterators by value;
* drop QT_STRICT_ITERATORS;
* iterators implictly convert to const_iterators, and APIs
take const_iterators;
* iterators are just bidirectional and not random access;
* added noexcept where it makes sense;
* "inline" dropped (churn);
* qMapLessThanKey dropped (undocumented, 0 hits in Qt, 1 hit in KDE);
* operator== on Q(Multi)Map requires operator== on the key type
(we're checking for equality, not equivalence!).
Very few breakages occur in qtbase.
[ChangeLog][Potentially Source-Incompatible Changes] QMap does not
support multiple equivalent keys any more. Any related functionality
has been removed from QMap, following the deprecation that happened
in Qt 5.15. Use QMultiMap for this use case.
[ChangeLog][Potentially Source-Incompatible Changes] QMap and
QMultiMap iterators random-access API have been removed. Note that
the iterators have always been just bidirectional; moving
an iterator by N positions can still be achieved using std::next
or std::advance, at the same cost as before (O(N)).
[ChangeLog][Potentially Source-Incompatible Changes] QMultiMap does
not inherit from QMap any more. Amongst other things, this means
that iterators on a QMultiMap now belong to the QMultiMap class
(and not to the QMap class); new Java iterators have been added.
Change-Id: I5a0fe9b020f92c21b37065a1defff783b5d2b7a9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
We already had append(const QList &) and now there's an overload
taking an rvalue reference.
Change-Id: Id2fbc6c57badebebeee7b80d15bb333270fa4e19
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
I don't know why std::shared_ptr allows this, but why not.
[ChangeLog][Important Behavior Changes] QSharedPointer objects will now
call custom deleters even when the pointer being tracked was null. This
behavior is the same as std::shared_ptr.
Fixes: QTBUG-85285
Pick-to: 5.15
Change-Id: I24006db8360041f598c5fffd161c260df0313b55
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
BLAKE2 does not specify requirements about specific hash sizes and
since QCryptographicHash does not support dynamic hash sizes, only the
most common hash sizes could be covered by this.
The supported hash sizes were chosen to match the ones supported by the
Linux kernel.
The new hashing algorithms for QCryptographicHash are:
* BLAKE2b (160 bit, 256 bit, 384 bit, 512 bit)
* BLAKE2s (128 bit, 160 bit, 224 bit, 256 bit)
[ChangeLog][QtCore][QCryptographicHash] Added BLAKE2b and BLAKE2s
hashing algorithms.
Fixes: QTBUG-78198
Change-Id: Id9e0180a974093982fdf1cdd6180988a2e5e9f4f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The tests are testing deprecated functionality, which we
still want to test.
Change-Id: Iad6ed35800896170c17fe019c7a6ecda22398ac3
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Since 5.14: intersect(), angle(). Also removed definition of M_2PI
from test, since its last use was in the tests being removed.
Change-Id: Ie3a12247e3760e8bfdd3a659cd06245c86b198c2
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Since 5.8: setHidden(), isHidden()
Part of the QCommandLineParser test also used setHidden().
Change-Id: I05a1c63ff3beb1167ed75632c1b71d7fff17f09e
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
QEasingCurve has a richer variety of curves and curveShape was already
implemented by changing the easingCurve property.
[ChangeLog][QtCore][QTimeLine] Deprecated QTimeLine's curveShape
property in favor of the easingCurve property.
Pick-to: 5.15
Change-Id: I7261c0f24d7e02bc94624f0b74d699df62de1a52
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
And generate a few more test projects that were missing.
Change-Id: I5df51106549aa5ae09bc3c42360e14b143719547
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
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>
This is in preparation for regenerating them with the new qt_foo
prefixed APIs.
Change-Id: Iff34932d642b1c0186ee39f952adf3ad367fd602
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
This is required to remove the ; from the macro with Qt 6.
Task-number: QTBUG-82978
Change-Id: I3f0b6717956ca8fa486bed9817b89dfa19f5e0e1
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
This keeps the API symmetric with what we have in our string
classes.
Change-Id: I94c5b39b718ca2472f9ca645e7a42e4314636f67
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Remove the last places where those got used and avoid
allocations when we resize to 0.
Change-Id: Ib553f4e7ce7cc24c31da15a55a86d18bdf1cc5c3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
As a side effect, data() can now return a nullptr. This
has the potential to cause crashes in existig code. To work
around this, return an empty string from QString::data()
and QByteArray::data() for now.
For Qt 6 (and once all our internal issues are fixed), data()
will by default return a nullptr for a null QString, but we'll
offer a #define to enable backwards compatible behavior.
Change-Id: I4f66d97ff1dce3eb99a239f1eab9106fa9b1741a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This improves the readability and avoids code duplication
in tst_Collections::forwardDeclared. Also some warnings
are fixed:
* qSort is deprecated.
* The = operator for LargeStatic needs to be implemented
explicitly when a copy constructor is given.
* QMap::insertMulti is deprecated, a MultiMap is required.
Task-number: QTBUG-82978
Change-Id: I577f851394edfaa30154bd3417ce391635cc546d
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
We have no doubt it does, because it's compiler-synthesized, but
we might want to implement the tuple protocol for QPair in the
future and then this will act as a safety net, emulating what
users are currently already doing with QPair.
Change-Id: Ie37f0214bb1aa64210d25be8a256606f4572febe
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
A QVLA is copyable, so it should be movable, too.
Added a helper function a la P1144's uninitialized_relocate_n to deal
with the QTypeInfoQuery stuff. This way, the code is re-usable
everywhere it's needed. The same cannot be said for QArrayDataOps,
which only a parent can love...
[ChangeLog][QtCore][QVarLengthArray] Added missing move constructor
and move-assignment operator.
Task-number: QTBUG-39111
Change-Id: If0dc2aa78eb29062d73dcd3dc4647ba345ae39e6
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
And name the main class QList. That's also the one we document.
This gives less porting pain for our users, and a lot less churn
in our API, as we use QList in Qt 5 in 95% of our API.
In addition, it gives more consistent naming with QStringList and
QByteArrayList and disambiguates QList vs QVector(2|3|4)D.
Fixes: QTBUG-84468
Change-Id: I3cba9d1d3179969d8bf9320b31be2230d021d1a9
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
There is no reason for keep using our macro now that we have C++17.
The macro itself is left in for the moment being, as well as its
detection logic, because it's needed for C code (not everything
supports C11 yet). A few more cleanups will arrive in the next few
patches.
Note that this is a mere search/replace; some places were using
double braces to work around the presence of commas in a macro, no
attempt has been done to fix those.
tst_qglobal had just some minor changes to keep testing the macro.
Change-Id: I1c1c397d9f3e63db3338842bf350c9069ea57639
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Make QPair an alias for std::pair, and qMakePair just a forwarder
towards std::make_pair.
Why? Fundamentally to ditch a bunch of NIH code; gain for free
structured bindings, std::tuple and std::reference_wrapper
compatibility, and so on.
Breakages:
* Some that code manually forward declares QPair.
We don't care about it (<QContainerFwd> is the proper way).
* Some code that overloads on std::pair and QPair. Luckily
it's mostly centralized: debug, metatypes, testing macros.
Just remove the QPair overload.
* Usages of qMakePair forcing the template type parameters.
There are a handful of these in qtbase, but only one was actually
broken.
* std::pair is NOT (and will never likely be) trivially copiable.
This is agreed to be a mistake done by practically all implementations
in C++11, can can't be fixed without breaking ABI.
Some code using QPair assuming it's trivially copiable may break;
exactly one occurrence was in qtbase.
* QMetaType logic extracts the type names in two different ways,
one by looking at the source code string (e.g. extracted by moc)
and one via some ad-hoc reflection in C++. We need to make
"QPair" (as spelled in the source code) be the same as "std::pair"
(gathered via reflection, which will see through the alias)
when compared. The way it's already done e.g. for QList is
by actually replacing the moc-extracted name with the name
of the actual type used in C++; do the same here.
On libc++, std::pair is actually in an inline namespace --
i.e. std::__1::pair; the reflection will extract and store
"std::__1::pair" so we need an ad-hoc fix to QMetaType.
[ChangeLog][QtCore][QPair] QPair is now an alias to std::pair,
and does not exist as a class in Qt any more. This may break
code such as functions overloaded for both QPair and std::pair.
Usually, the overload taking a QPair can be safely discarded,
leaving only the one taking a std::pair. QPair API has not changed,
and qMakePair is still available for compatibility (although
new code is encouraged to use std::pair and std::make_pair
directly instead).
Change-Id: I7725c751bf23946cde577b1406e86a336c0a3dcf
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
calling emplace() on a std::vector with a reference
pointing into the same vector is undefined behavior.
Fix this by using a temporary inbetween.
Change-Id: I47c28700dffa2107fb0cba302168c86b659eafb3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
It has been the case for both QStringLiteral and QByteArrayLiteral
since Qt 5.0, and Q_ARRAY_LITERAL since Qt 6.0.
Since it's definitely surprising, add a note in the docs, which
is "somehow" consistent with the interpretation of capacity as
the biggest possible size before we reallocate. Since it's 0,
any manipulation of the size will cause a reallocation.
(Alternatively: the capacity() is for how many elements memory was
requested from the free store. No memory was allocated, so 0...)
Task-number: QTBUG-84069
Change-Id: I5c7d21a22d1bd8b8d9b71143e33d537ca0224acd
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Also removed add_subdirectory calls for subdirs which no longer exist.
Change-Id: I759f408ca812e1721dde495b0e23feffdeeb9c60
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
The old implementation was either using CRC32 on modern processors
or a trivial, but rather slow implementation.
We can't continue with CRC32, as that implementation can only
give us 32bit hashes, where we now need to support 64bit in Qt 6.
Change the implementation to use MurmurHash, as public domain
implementation that is both very fast and leads to well distributed hashes.
This hash function is about as fast as the SSE optimized CRC32 implementation
but works everywhere and gives us 64 bit hash values.
Here are some numbers (time for 10M hashes):
14 char 16 char
QByteArray QString float
old qHash (non CRC32) 127ms 134ms 48ms
old qHash (using SSE CRC32 instructions 60ms 62ms 46ms
new qHash 52ms 43ms 46ms
Unfortunately MurmurHash is not safe against hash table DoS attacks, as
potential hash collisions are indepenent of the seed. This will get
addressed in followup commit, where we use SipHash or an SSE optimized
AES based hashing algorithm that does not have those issues.
Change-Id: I4fbc0ac299215b6db78c7a0a2a1d7689b0ea848b
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
At the same time use the opportunity to refactor the
insertion code inside the implementation of QHash to
avoid copy and move constructors as much as possible
and always construct nodes in place.
Change-Id: I951b4cf2c77a17f7db825c6a776aae38c2662d23
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
This is required, so that QHash and QSet can hold more
than 2^32 items on 64 bit platforms.
The actual hashing functions for strings are still 32bit, this will
be changed in a follow-up commit.
Change-Id: I4372125252486075ff3a0b45ecfa818359fe103b
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Make use of the new features available in QHash and do a more
performant implementation than the old one.
Change-Id: Ie74b3cdcc9871cd241aca205672093dc395d04a7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
A brand new QHash implementation using a faster and more memory efficient data
structure than the old QHash.
A new implementation for QHash. Instead of a node based approach as the old
QHash, this implementation now uses a two stage lookup table. The total
amount of buckets in the table are divided into spans of 128 entries.
Inside each span, we use an array of chars to index into a storage area
for the span.
The storage area for each span is a simple array, that gets (re-)allocated
with size increments of 16 items. This gives an average memory overhead of
8*sizeof(struct{ Key; Value; }) + 128*sizeof(char) + 16 for each span.
To give good performance and avoid too many collisions, the array keeps its
load factor between .25 and .5 (and grows and rehashes if the load factor goes
above .5).
This design allows us to keep the memory overhead of the Hash very small, while
at the same time giving very good performance. The calculated overhead for a
QHash<int, int> comes to 1.7-3.3 bytes per entry and to 2.2-4.3 bytes for
a QHash<ptr, ptr>.
The new implementation also completely splits the QHash and QMultiHash classes.
One behavioral change to note is that the new QHash implementation will not
provide stable references to nodes in the hash when the table needs to grow.
Benchmarking using https://github.com/Tessil/hash-table-shootout shows
very nice performance compared to many different hash table implementation.
Numbers shown below are for a hash<int64, int64> with 1 million entries. These
numbers scale nicely (mostly in a linear fashion with some variation due to
varying load factors) to smaller and larger tables. All numbers are in seconds,
measured with gcc on Linux:
Hash table random random random random reads full
insertion insertion full full after iteration
(reserved) deletes reads deletes
------------------------------------------------------------------------------
std::unordered_map 0,3842 0,1969 0,4511 0,1300 0,1169 0,0708
google::dense_hash_map 0,1091 0,0846 0,0550 0,0452 0,0754 0,0160
google::sparse_hash_map 0,2888 0,1582 0,0948 0,1020 0,1348 0,0112
tsl::sparse_map 0,1487 0,1013 0,0735 0,0448 0,0505 0,0042
old QHash 0,2886 0,1798 0,5065 0,0840 0,0717 0,1387
new QHash 0,0940 0,0714 0,1494 0,0579 0,0449 0,0146
Numbers for hash<std::string, int64>, with the string having 15 characters:
Hash table random random random random reads
insertion insertion full full after
(reserved) deletes reads deletes
--------------------------------------------------------------------
std::unordered_map 0,4993 0,2563 0,5515 0,2950 0,2153
google::dense_hash_map 0,2691 0,1870 0,1547 0,1125 0,1622
google::sparse_hash_map 0,6979 0,3304 0,1884 0,1822 0,2122
tsl::sparse_map 0,4066 0,2586 0,1929 0,1146 0,1095
old QHash 0,3236 0,2064 0,5986 0,2115 0,1666
new QHash 0,2119 0,1652 0,2390 0,1378 0,0965
Memory usage numbers (in MB for a table with 1M entries) also look very nice:
Hash table Key int64 std::string (15 chars)
Value int64 int64
---------------------------------------------------------
std::unordered_map 44.63 75.35
google::dense_hash_map 32.32 80,60
google::sparse_hash_map 18.08 44.21
tsl::sparse_map 20.44 45,93
old QHash 53.95 69,16
new QHash 23.23 51,32
Fixes: QTBUG-80311
Change-Id: I5679734144bc9bca2102acbe725fcc2fa89f0dff
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Conflicts:
examples/opengl/doc/src/cube.qdoc
src/corelib/global/qlibraryinfo.cpp
src/corelib/text/qbytearray_p.h
src/corelib/text/qlocale_data_p.h
src/corelib/time/qhijricalendar_data_p.h
src/corelib/time/qjalalicalendar_data_p.h
src/corelib/time/qromancalendar_data_p.h
src/network/ssl/qsslcertificate.h
src/widgets/doc/src/graphicsview.qdoc
src/widgets/widgets/qcombobox.cpp
src/widgets/widgets/qcombobox.h
tests/auto/corelib/tools/qscopeguard/tst_qscopeguard.cpp
tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp
tests/benchmarks/corelib/io/qdiriterator/qdiriterator.pro
tests/manual/diaglib/debugproxystyle.cpp
tests/manual/diaglib/qwidgetdump.cpp
tests/manual/diaglib/qwindowdump.cpp
tests/manual/diaglib/textdump.cpp
util/locale_database/cldr2qlocalexml.py
util/locale_database/qlocalexml.py
util/locale_database/qlocalexml2cpp.py
Resolution of util/locale_database/ are based on:
https://codereview.qt-project.org/c/qt/qtbase/+/294250
and src/corelib/{text,time}/*_data_p.h were then regenerated by
running those scripts.
Updated CMakeLists.txt in each of
tests/auto/corelib/serialization/qcborstreamreader/
tests/auto/corelib/serialization/qcborvalue/
tests/auto/gui/kernel/
and generated new ones in each of
tests/auto/gui/kernel/qaddpostroutine/
tests/auto/gui/kernel/qhighdpiscaling/
tests/libfuzzer/corelib/text/qregularexpression/optimize/
tests/libfuzzer/gui/painting/qcolorspace/fromiccprofile/
tests/libfuzzer/gui/text/qtextdocument/sethtml/
tests/libfuzzer/gui/text/qtextdocument/setmarkdown/
tests/libfuzzer/gui/text/qtextlayout/beginlayout/
by running util/cmake/pro2cmake.py on their changed .pro files.
Changed target name in
tests/auto/gui/kernel/qaction/qaction.pro
tests/auto/gui/kernel/qaction/qactiongroup.pro
tests/auto/gui/kernel/qshortcut/qshortcut.pro
to ensure unique target names for CMake
Changed tst_QComboBox::currentIndex to not test the
currentIndexChanged(QString), as that one does not exist in Qt 6
anymore.
Change-Id: I9a85705484855ae1dc874a81f49d27a50b0dcff7
std::function does not have deduction guides in older libc++ (presumably older
than version 10). Omitting the template parameter isn't essential for the test,
so just give it.
Change-Id: Ia9bb91f961b0928203737ec976913effd06433e0
Reviewed-by: Jüri Valdmann <juri.valdmann@qt.io>
Test fails on MinGW 8.1 x86, but not on MinGW 8.1 x86_64.
Task-number: QTQAINFRA-3304
Task-number: QTBUG-69947
Change-Id: Ie9a35bd6d5a8481028cd0ea426d1cf00bd7cf093
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
A common pattern in declarative is to use the unused bits in linked list
next pointers for additional information storage. The "next" pointer is
typically then a tagged pointer of the containing class, which is not
fully defined yet. Therefore alignof() can't be used at tagged pointer
instantiation time. This patch delays the calls to alignment, etc. until
the corresponding functions are used, as in principle the tagged pointer
is just a quintptr and no additional information should be needed until
operating on it.
Change-Id: I87a3578ee921d471e1b60ed5903b549ef0610b97
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Useful for attaching small bits of information in the alignment bits of
a naked pointer. For use in the new property system as well as in
qtdeclarative (where currently a similar class exists as private API).
Change-Id: Idf9b93e714e15129f302e16425dbeda94bcd207b
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Sona Kurazyan
Giuseppe D'Angelo
Thiago Macieira
Ievgenii Meshcheriakov
Tatiana Borisova
Edward Welbourne
Marc Mutz
Ivan Solovev
Joerg Bornemann
Mårten Nordheim
Tor Arne Vestbø
Ville Voutilainen
Andrei Golubev
Andreas Buhr
Volker Hilsheimer
Fabian Kosmale
David Faure
Samuli Piippo
Zhang Yu
David Skoland
Michal Klocek
Alexandru Croitor
Assam Boudjelthia
Lars Knoll
Allan Sandfeld Jensen
Friedemann Kleint
Mitch Curtis
Robert Loehning
Karsten Heimrich
Linus Jahn
Lars Schmertmann
Jarek Kobus
Qt Forward Merge Bot
Kari Oikarinen
Cristian Adam
Simon Hausmann