This is used by QSet to avoid storing extra data for the value
in the Hash. Re-implement the optimization after the changes to QHash.
Change-Id: Ic7eba53d1c0398399ed5b25fef589ad62567445f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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>
Add a new QRangeCollection type to store and manage
multiple page ranges. This moves out the parser and validator
logic from the platform dependent (UNIX) dialog and makes it
publicly available from QPrinter.
This improves the usability of QPrinter in those applications
which doesn't use print dialog to configure printer.
(e.g.: QTextDocument, QWebEnginePage)
Change-Id: I0be5a8a64781c411f83b96a24f216605a84958e5
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Followup to ed3ed0b9db68916fede4 and
3c159957f8.
In QWindowSystemInterfacePrivate::fromNativeTouchPoints() and
QWindowSystemInterfacePrivate::toNativeTouchPoints() we continue using
struct TouchPoint's QRectF area as storage for the screen position +
ellipse diameters; as the comment says, this is _unrotated_, meaning
that rotation is stored separately, and area should not be construed as
the bounding box of the rotated ellipse. (In Qt 6 we can make the
QPA touchpoint look the same as the QTouchEvent::TouchPoint to
eliminate the need to calculate the center of the rect.)
In QGraphicsScenePrivate::updateTouchPointsForItem(), setRect() sets the
position and the ellipse diameters, but the latter is redundant because
the purpose of this function is to localize a touchpoint to the
coordinate system of a particular QGraphicsItem. Ellipse diameters
should stay the same.
In QApplicationPrivate::updateTouchPointsForWidget(), as in
QGraphicsScene, we are localizing touchpoints to a widget
and to the screen that the widget is shown on, so only the position
needs to be set, while preserving the sub-pixel resolution that
mapFromGlobal(QPoint) loses.
Fixes: QTBUG-83403
Change-Id: I61d29e14cbe38567767b164af6ae895082c5e1a1
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Clear Linux containers running as root may have no /etc/passwd. But
they'll have /etc/machine-id because systemd creates that. Also test
/proc/version (a Linux-specific file) because that isn't writeable even
by root.
Take the opportunity to check with access() instead of assuming root and
only root can write to the file.
Change-Id: Ibdc95e9af7bd456a94ecfffd1603e8359604752b
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
This was never tested. The infinite loop in QCborContainerPrivate::grow
is the proof.
[ChangeLog][QtCore][QCborArray] Fixed an infinite loop when operator[]
was called with with an index larger than the array's size plus 1.
Change-Id: Ibdc95e9af7bd456a94ecfffd1603df3855c73f20
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Similar to the QJsonObject issue of the previous commit (found with the
same tests, but not the same root cause). One fix was that copying of
byte data from the QByteArray to itself won't work if the array
reallocates. The second was that
assign(*that, other.concrete());
fails to set other.d to null after moving. By calling the operator=, we
get the proper sequence of events.
[ChangeLog][QtCore][QCborMap] Fixed some issues relating to assigning
elements from a map to itself.
Note: QCborMap is not affected by the design flaw discovered in
QJsonObject because it always appends elements (it's unsorted), so
existing QCborValueRef references still refer to the same value.
Task-number: QTBUG-83366
Change-Id: Ibdc95e9af7bd456a94ecfffd1603df846f46094d
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
The refactoring to use CBOR missed two places where we could assign from
the same object and thus cause corruption. In fixing this issue, I found
a design flaw in QJsonObject, see Q_EXPECT_FAILing unit test and task
QTBUG-83398.
[ChangeLog][QtCore][QJsonObject] Fixed a regression from 5.13 that
incorrect results when assigning elements from an object to itself.
Fixes: QTBUG-83366
Change-Id: Ibdc95e9af7bd456a94ecfffd1603df24b06713aa
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Avoids ASAN warning of ODR violation:
SUMMARY: AddressSanitizer: odr-violation: global 'typeinfo name for
QSocketEngineHandler' at ../../../../../src/network/socket/qabstractsocketengine.cpp
This trick has not been needed since we got Q_AUTOTEST_EXPORT. The main .pro
file has:
requires(qtConfig(private_tests))
Change-Id: Ibdc95e9af7bd456a94ecfffd1603e598932b88ad
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
If a find_package() in a try_compile project doesn't find a package,
and we then link against a non-existent target, the configuration
failure of the compile test also fails the configuration of the
project.
To avoid that, separate library targets from non-targets, and make sure
to only link against the targets if they exist.
pro2cmake now outputs modified compile test project code which iterates
over targets and non-target libraries, and links against them when
needed.
Change-Id: Ib0f4b5f07af13929c42d01a661df2cabdf9b926b
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
This makes the Qt::AA_DisableWindowContextHelpButton flag obsolete. It
is already documented as such in Qt 5, so we can remove it now.
[ChangeLog][QtWidgets] Do not show 'What's this' button anymore in
dialogs on Windows. To show the button again, you need to set
Qt::WindowsContextHelpButtonHint explicitly the top level widget.
Change-Id: I30017ca300441cb2ee37940ce97dfe18eb2b118b
Reviewed-by: Kai Koehne <kai.koehne@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>
Normally people shouldn't create temporary files on /, but if you're
running as root, why not?
Caught when running tst_qtemporaryfile as root:
openat(AT_FDCWD, "", O_RDWR|O_CLOEXEC|O_TMPFILE, 0600) = -1 ENOENT (No such file or directory)
Change-Id: Ibdc95e9af7bd456a94ecfffd1603ebfc17cea220
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: David Faure <david.faure@kdab.com>
QApplicationPrivate::keypadNavigationEnabled remains, and is
used in many places in QtWidgets.
Change-Id: Id95239560c279850f340f65414acb92202d10367
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Get rid of double negation to make the configuration easier to understand.
Change-Id: I5dfe256c2ac2ef131c3db20dce9ff492c529a5b1
Reference: https://emscripten.org/docs/tools_reference/emcc.html
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
In Coin when provisioning for Android, we download and configure
the OpenSSL package, but don't actually build it. This means that
find_package(OpenSSL) can find the headers, but not the library,
and thus the package is marked as not found.
Previously the openssl_headers feature used the result of finding
the OpenSSL package, which led to it being disabled in the above
described Android case.
Introduce 2 new find scripts FindWrapOpenSSL and
FindWrapOpenSSLHeaders. FindWrapOpenSSLHeaders wraps FindOpenSSL,
and checks if the headers were found, regardless of the OpenSSL_FOUND
value, which can be used for implementing the openssl_headers feature.
FindWrapOpenSSL uses FindWrapOpenSSLHeaders, and simply wraps the
OpenSSL target if available.
The find scripts also have to set CMAKE_FIND_ROOT_PATH for Android.
Otherwise when someone passes in an OPENSSL_ROOT_DIR, its value will
always be prepended to the Android sysroot, causing the package not
to be found.
Adjust the mapping in helper.py to use the targets created by these
find scripts. This also replaces the openssl/nolink target.
Adjust the projects and tests to use the new target names.
Adjust the compile tests for dtls and oscp to use the
WrapOpenSSLHeaders target, so that the features can be enabled even
if the library is dlopen-ed (like on Android).
Task-number: QTBUG-83371
Change-Id: I738600e5aafef47a57e1db070be40116ca8ab995
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Previously the $$PWD was evaluated within the including .pro file,
which generated incorrect relative paths to source files.
Now we use a horrible hack to evaluate keys ending with SOURCES
and HEADERS. If such is a case, use a map_file transformer which
will use the included scope, thus creating correct relative paths.
Fixes projects in qtdeclarative like src/qmltypregistrar and qmllint.
Checked that it doesn't break projects in qtdeclarative and qtbase.
Change-Id: I21f1e4c638c2cf8d0f67e94e1a583ebc54c175a2
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
They were no longer used anyway.
Change-Id: I565480cf39d2d8a27735afe56ac6537bc62fbd4a
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Move QGraphicsView specific code into reimplementation of now virtual
(and const) canStartScrollingAt.
Remove unhelpful comment.
Change-Id: Ib4799e48ac4f85748c77c52d29511a0490303676
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
- replace random access with ranged for
- replace foreach with ranged for
- add qAsConst where possible
- iterate directly over QMap, rather than the keys (address FIXME
comment)
- add some const to ensure that code has no side effects on
containers or indices used in different places
Change-Id: I6199fd6edd5e4426c6c7fee0ff64ec9421a64cd5
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
This caused false alarms in fuzzing tests.
The lifetime of the screen is the same as that of QMinimalIntegration.
But failure to call handleScreenRemoved() also causes a warning; so
as on "normal" platforms, the screen has to be separately allocated.
Change-Id: Iad0cc53b8d09687400ced28bc2353b7500b01110
Reviewed-by: Robert Loehning <robert.loehning@qt.io>
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
In addition to .qmake.cache and .qmake.super we check for the
existence of CMakeCache.txt. The top-level non-prefix build part is
prospective, but seems plausible.
Without this fix, non-prefix qmake builds build libs etc. in the wrong
locations, i.e. not in a subdirectory of qtbase.
Change-Id: Ic88efa6c772d49ef92713fe640f004c8a5c849d3
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
This requires mostly making moc a bit more permissive, which has the
advantage that it also simplifies the code a little bit.
The newly added test case demonstrates how to connect such a property
with a change signal.
One test case needed to be changed regarding the callback as the
publicProperty member now has a (permanent) observer and therefore
re-assigning the binding will re-evaluate it as the value might have
changed.
Change-Id: Ia7edcec432de830bdd4e07d943c5d4550c175ca4
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
For prefix builds the prl files of header modules still contained the
absolute path of the install prefix instead of $$[QT_INSTALL_LIBS]. This
was, because the QMAKE_PRL_INSTALL_REPLACE variable was only filled for
'lib' TEMPLATE projects. Header modules, however, have the 'aux'
template.
Fixes: QTBUG-82871
Change-Id: I90f248967f1bff41423d871a977ae91c78015bbd
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
The code that sets up QMAKE_RESOLVED_BUNDLE did not take QMAKE_BUNDLE_EXTENSION
into account. The logic is the same as in UnixMakefileGenerator::init().
Fixes: QTBUG-83222
Change-Id: I8fc4f16b399303394f2106e5c1071347ace93d4a
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
The previous approach didn't work for prefix builds. While a target
might be excluded from building via EXCLUDE_FROM_ALL property, when
calling make install it would still try to install the target and
thus fail.
It's not possible to modify an install() command in a post-processing
step, so we switch the semantics around.
pro2cmake will now write a
qt_exclude_tool_directories_from_default_target() call before adding
subdirectories. This will set an internal variable with a list
of the given subdirectories, which is checked by qt_add_executable.
If the current source dir matches one of the given subdirectories,
the EXCLUDE_FROM_ALL property is set both for the target and the
qt_install() command.
This should fix the failing Android prefix builds of qttools.
Amends 622894f96e
Change-Id: Ia19323a2ef72a3fb9cb752ad2d4f2742269d11c4
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
list(JOIN) removes a layer of escaping, which force doubling up
on the backslashes. Instead use string(REPLACE) thus making the
escaping a bit saner.
Change-Id: Ie3daf0112dd09fbcbaf8798552949470952611c9
Reviewed-by: Leander Beernaert <leander.beernaert@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
