While retaining the old sorting order, this allows us to simplify the
ifdef'ery and produces much better code.
With Clang, an equality check is
vmovdqu (%rdi), %xmm0
vpxor (%rsi), %xmm0, %xmm0
vptest %xmm0, %xmm0
sete %al
in C++20 mode.
GCC generates four 64-bit loads instead of using vectors:
movbeq (%rdi), %rax
movbeq 8(%rdi), %rdx
movbeq (%rsi), %r8
movbeq 8(%rsi), %rcx
movq %rdx, %r10
movq %rax, %r11
movq %r8, %rdx
movq %rcx, %rax
xorq %r10, %rax
xorq %r11, %rdx
orq %rdx, %rax
sete %al
(the four MOV in the middle don't seem necessary)
For the sorting case, the compilers need to generate extra code
because of the check on the variant, something I'm scheduling for
removal in Qt 7.0. For long-term sorting code, both GCC and Clang
generate four 64-bit load-and-swap-endianness instructions, but Clang
for some reason also kept the 128-bit vector code (I'm guessing it's a
minor optimization bug that will be corrected in due time).
Change-Id: I46feca3a447244a8ba19fffd17dceacc8e528c3e
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
(cherry picked from commit 15f753ca5a60b5273d243f528978e25c28a9b56d)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
Requires to mark the existing QString overload as Q_WEAK_OVERLOAD.¹
And since this non-polymorphic class is exported wholesale, we need to
involve REMOVED_SINCE here, too.
¹ While QString and QByteArray don't overload well, the new overload
set makes calls with QByteArray arguments ambiguous, unless the
QString overload is demoted to a weak one.
As a drive-by, change the QUuid argument passing from cref to
by-value, fixing a Clazy warning.
[ChangeLog][QtCore][QUuid] Ported createUuidV3() and createUuidV5()
from QByteArray to QByteArrayView, made them noexcept, and fixed
various ambiguities in the overload set.
Change-Id: I9f71209f2ddb58ace4e15fb68418b1a21d2b3602
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
This allows use of the noexcept static function in cases where more
than one piece of data needs to be hashed, and concatenation of said
data would have to allocate memory.
Port QUuid to use the new function, allowing to mark the V3 and V5
create functions noexcept.
As a drive-by, take QUuid by value in the internal helper function,
fixing a Clazy warning.
Task-number: QTBUG-125431
Change-Id: I17938f0be44c91085e2aaa5574953f8dceacc990
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
They're content-equivalent, except that the latter doesn't have to
allocate a return value on the heap.
Pick-to: 6.7
Change-Id: Ifcae47b487c80c2bac02900f08393b386cfe806c
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Replace public friend operators operator==(), operator!=(),
operator<(), etc of QUuid and GUID with friend methods
comparesEqual() / compareThreeWay().
Use Q_DECLARE_EQUALITY_COMPARABLE_LITERAL_TYPE, because
the (in)equality operators are constexpr.
And then we use helper macros, because the other relational
operators are not constexpr. Cannot make relational operators
constexpr, because it requires to make variant() and isNull() methods
constexpr and QT_CORE_INLINE_SINCE. But the experiments
show that it does not work with adding constexpr to
QT_CORE_INLINE_SINCE.
Put relational operators under !QT_CORE_REMOVED_SINCE(6, 8) to prevent
an ambiguity. On Windows the metatype for QUuid is created
in removed_api.cpp. That leads to an ambiguity, and as a result
the compiler fails to create the equals methods of QMetaTypeInterface.
This, in turn, leads to the failed comparisons.
The usage of !QT_CORE_REMOVED_SINCE(6, 8) solves the problem.
Task-number: QTBUG-120304
Change-Id: I640bdeb8f1f7306ba06b9e4193d008cf2bb6dbfb
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
The bootstrapped tools really mustn't produce random output (they must
always be reproducible exactly). Therefore, ensure we don't need this
file.
Change-Id: I01ec3c774d9943adb903fffd17b7eb94dbd4be89
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
Reviewed-by: Ahmad Samir <a.samirh78@gmail.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Use a stack buffer instead of a QByteArray to hold the 16 bytes for
the QUuid serialisation, replacing toRfc4122() with toBytes() and a
memcpy().
As drive-bys, drop the needless cast from char* to uchar*
(qToLittleEndian() has void* arguments, so char* is fine) and drop {}
around single-line if body.
Pick-to: 6.6
Change-Id: I6ffabcf07fc9a730a782e20e113999a0dcf15067
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
... and rename it to qbswap(), thus enabling the endian conversions
for Id128bytes via q{To,From}{Little,Big}Endian() functions.
Found during Qt 6.6 API Review.
Pick-to: 6.6
Change-Id: Ie320cee52ec2b9de0aaa112adec8febb7f5b68a2
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
Clarify that the order is the expected byte order of the input data.
Found during Qt 6.6 API Review.
Pick-to: 6.6
Change-Id: Iaa1f5eef22df60676e52197fbcf613f6e9970a3e
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
This constructor matches way too many argument types (integral,
unscoped enums, FP types), so it's likely to cause mayhem, even if
left in as an explicit constructor.
We now have a named constructor for the same functionality, so just
drop the "unnamed" constructor.
"Unnamed" constructors are important when emplacement is more
efficient than construction + move, or when implicit conversion is
required. Neither is the case here: The named as well as the
"unnamed" constructors just copy ten bytes around, and the compiler
can optimize those extra copies away just fine.
Found in API review.
Pick-to: 6.6
Change-Id: I7faafd3ebf522fb2b0e450112fb95d643fece5ce
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
This makes the API symmetric again (fromBytes()/toBytes(),
fromString()/toString(), fromUInt128()/toUInt128()), but also gives us
the option to remove the QUuid(quint128), should we so choose, because
of its overly-broad argument matching range.
Found in API review.
Pick-to: 6.6
Change-Id: I91bd2450d62ed565ec3b8e46c875f4983bd9dc73
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
[ChangeLog][QtCore][QUuid] Added support for converting between QUuid and
quint128, on platforms that offer 128-bit integer types (all 64-bit ones
supported by Qt, except MSVC).
Change-Id: Id8e48e8f498c4a029619fffd1728c9553e871df5
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Some more modern protocols like Bluetooth LE transmit data in little
endian. QtBluetooth will benefit from this.
Change-Id: Id8e48e8f498c4a029619fffd1728c94ddd444537
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
This is inspired by QBluetoothUuid's quint128, but with a better
name. It also matches systemd's sd_id128.
Change-Id: Id8e48e8f498c4a029619fffd172893dc1545adda
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
Replace the current license disclaimer in files by
a SPDX-License-Identifier.
Files that have to be modified by hand are modified.
License files are organized under LICENSES directory.
Task-number: QTBUG-67283
Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
As a drive-by, did also minor refactorings/improvements.
Task-number: QTBUG-98434
Change-Id: I81964176ae2f07ea63674c96f47f9c6aa046854f
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>
In the effort of repairing broken links as per QTBUG-96127,
a series of RFC links referring to `tools.ietf.org/html/*` were modified
to point to the new address that the site redirected to.
To simplify executing a similar task and to diminish the duplication of
manually inserted urls, the already existing `rfc.qdoc` file, containing
`\externalpage` commands directing to RFC locations, was enhanced with
links to all RFCs that were mentioned in the current documentation, so
as to aggregate this common category of links.
All links pointing to a `ietf` domain inside QDoc documentation blocks
were then changed to use the newly provided external-references.
Task-number: QTBUG-96127
Pick-to: 6.2
Change-Id: I2a52eb6aa8c9e346f64ef1a627b039220d9f6c2a
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
* name method parameters consistently with their declaration
* don't document parameters that are not there
Pick-to: 6.2
Change-Id: I06ae9fdca357ed29eb7a72802f149eb4914181f4
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Remove the QString/QStringView/QLatin1String/const char* overloads
from the API, but not the ABI.
As a drive-by, replace a use of QStringView::left() by truncate(), as
suggested by a comment.
[ChangeLog][QtCore][QUuid] The from-string constructor and the
fromString() function now take QAnyStringView (was: overload set with
a subset of QString, QByteArray, const char*, QLatin1String,
QStringView each).
Change-Id: If7fa26cfbef9280480c78b669d9f5f14118995ed
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Remove the QByteArray overload from the API, but not the ABI.
Adapt callers.
Change-Id: I88aa09cbca3b89d0b249ce336ebe49c4b352c9e1
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
In each case, simply give WithBraces as default for mode, since that's
what _q_uuidToHex() used internally.
Task-number: QTBUG-85700
Change-Id: I9f6fddb259703917129d4be742bbdd2eb1647f44
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@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>
In preparation of Qt6 move away from pre-C++11 macros.
Change-Id: I44126693c20c18eca5620caab4f7e746218e0ce3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Replace null and '\c nullptr' with \nullptr in the documentation.
Change-Id: Ib9e0cfc2eb2830b213e6523773603d56180b0998
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Conflicts:
src/corelib/tools/qvarlengtharray.qdoc
src/corelib/tools/qvector.qdoc
Resolved documentation changes in favor of 017569f702,
which keeps the move overloads along with its const-ref sibling.
Change-Id: I0835b0b3211a418e5e50defc4cf315f0964fab79
While we're at it, add a way to get it without the dashes too. I'm
calling it "id128", as in "128-bit ID", as seen in journald's sd_id128_t
type and the sd_id128_xxx() API.
[ChangeLog][QtCore][QUuid] Added a parameter to both toString() and
toByteArray() to allow controlling the use or not of the braces and
dashes in the string form.
Change-Id: I56b444f9d6274221a3b7fffd150cde706cfc5098
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
This commit introduces minimal support for instrumentation within Qt.
Currently, only LTTNG/Linux and ETW/Windows are supported.
Change-Id: I59b48cf83acf5532a998bb493e6379e9177e14c8
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Right now,this does really nothing. This commit is just to allow us to
transition the other modules (besides qtbase) to use the syntax that
will become the API.
I've marked three places to use the system CSPRNG:
1) the QHash seed
2) QUuid
3) QAuthenticator
I didn't think the HTTP multipart boundary needed to be
cryptographically safe, so I changed that one to the global generator.
Change-Id: Ib17dde1a1dbb49a7bba8fffd14ecf1938bd8ff61
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
QRandomGenerator can produce more than 31 bits of data. And it uses
/dev/urandom for us on Unix, so QHash does not need to duplicate that
part.
Change-Id: Icd0e0d4b27cb4e5eb892fffd14b52a0d91f179eb
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
As for the formatting code, de-duplicate the parsing code by only
parsing char*s, converting QChars to Latin-1 first in a small buffer.
The QUuid(const char*) ctor performed no length checking, relying
instead on the checks performed within _q_uuidFromHex(), which
includes an implicit check for premature end (because NUL is not
a valid token for the parser).
The (QString) and (QByteArray) ctors did perform length checking.
To the extent possible, this is removed, since it is handled by
_q_uuidFromHex(). Failure cases need not be optimized. Only the
QLatin1String overload needs to do some checking, because views in
general are not NUL-terminated. The QStringView overload can just
append a NUL when it converts to Latin-1.
The only check I added to _q_uuidFromHex() is that for src ==
nullptr. It would otherwise be duplicated in several callers.
While touching the internal functions, port to passing and returning
by value.
Saves 1.6KiB in text size on optimized GCC 6.1 Linux AMD64 builds,
even though we added new API.
Port some users to the new functions. Expand fromString() test.
[ChangeLog][QtCore][QUuid] Added fromString(QStringView/QLatin1String).
Change-Id: I519339419129550c86e0ea80514865cd6a768f5d
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
The code was duplicated for QChar and char characters. Keep only the
char version, and use QString::fromLatin1() to convert to QString.
This does not perform more allocations. It just copies 38 bytes more
than before.
Saves 788B in text size on optimized GCC 6.1 Linux AMD64 builds.
Change-Id: I1a65c8128eb2097e11527961618d54ea362e1b80
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
A default-constructed static QBasicAtomicInt at function scope
will be dynamically initialized. It will still be zero-initialized,
but at least GCC adds guard variables for such objects.
When using aggregate initialization, the guard disappears.
Amends 04d6495bf7.
Change-Id: Id9335cffdd43094cafb231fdde2523d013abe1d6
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
A variable of static storage duration that is not zero-initialized
takes up space in the DATA segment of the executable. By making the
counters start at zero and adding the initial value afterwards, we
move them over to the BSS segment, which does not take up space in
the executable.
Wrap atomics used across function boundaries into small functions,
to avoid code duplication and to increase readability.
Change-Id: Ida6ed316ecb8fe20da62a9577161349e14de5aed
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Move those to the equivalent {to,set,from}SecsSinceEpoch(), except for
the cases that did QDateTime::currentDateTime{,Utc}().toTime_t. Those
are best implemented with QDateTime::currentSecsSinceEpoch().
Change-Id: Ib57b52598e2f452985e9fffd145a366c92cfda20
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
These new functions use a 64-bit integer in the API, instead of the
broken 32-bit unsigned integer that the previous xxxTime_t functions
used. That was a design flaw when the API was introduced back in Qt 4.2,
so I'm deprecating the API and slating it for removal in 6.0.
The changes to qfilesystemmetadata_p.h and quuid.cpp are necessary to
build the bootstrap library. The rest of the adaptation to the new API
will come in the next commit.
[ChangeLog][QtCore][QDateTime] Introduced toSecsSinceEpoch,
fromSecsSinceEpoch and setSecsSinceEpoch functions, which use 64-bit
integers to represent the number of seconds.
[ChangeLog][QtCore][QDateTime] The toTime_t, fromTime_t and setTime_t
functions are deprecated and will be removed in Qt 6.0. For new code,
use the equivalent functions with "SecsSinceEpoch" in the name, or the
equivalent ones with millisecond accurancy that have existed since
Qt 4.7.
Change-Id: Ib57b52598e2f452985e9fffd145a355d0e7ff48d
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
It's easier to maintain the function and the docs when they live together.
Change-Id: I1e047b4ac1eb61a36849188da560dd899e05509f
Reviewed-by: Jake Petroules <jake.petroules@qt.io>
From Qt 5.7 -> LGPL v2.1 isn't an option anymore, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/
Updated license headers to use new LGPL header instead of LGPL21 one
(in those files which will be under LGPL v3)
Change-Id: I046ec3e47b1876cd7b4b0353a576b352e3a946d9
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
The latter is much faster as it doesn't have to deal with
time zones.
This change handles the trivial ones: Either the call to
currentDateTime() is immediately followed by a call to toUTC()
or toTime_t(). The latter is much faster on UTC QDateTimes, too.
Credits to Milian Wolff, from whose QtWS15 talk this advice is
taken.
Change-Id: I872f5bbb26cbecedc1e5c0dbee4d5ac2c6eb67ee
Reviewed-by: Milian Wolff <milian.wolff@kdab.com>
qtbase/src/gui/text/qzip.cpp:797:warn:Cannot find 'FileInfo::d' specified with '\variable' in any header file
qtbase/src/opengl/doc/src/qtopengl-index.qdoc:28:warn:Can't link to 'Qt Gui'
qtbase/src/opengl/doc/src/qtopengl-module.qdoc:28:warn:Can't link to 'Qt Gui'
qtbase/src/widgets/widgets/qcombobox.cpp:3033:warn:Cannot find base function for '\reimp' in showPopupFromMouseEvent()
qtbase/src/corelib/plugin/quuid.cpp:849: warning: Can't link to 'variant()'
qtbase/src/corelib/plugin/quuid.cpp:863: warning: Can't link to 'variant()'
qtbase/src/widgets/dialogs/qsidebar.cpp:72: warning: Cannot find base function for '\reimp' in mimeTypes()
qtbase/src/widgets/dialogs/qsidebar.cpp:80: warning: Cannot find base function for '\reimp' in flags()
qtbase/src/widgets/dialogs/qsidebar.cpp:98: warning: Cannot find base function for '\reimp' in mimeData()
qtbase/src/widgets/dialogs/qsidebar.cpp:134: warning: Cannot find base function for '\reimp' in dropMimeData()
qtbase/src/widgets/dialogs/qsidebar.cpp:151: warning: Cannot find base function for '\reimp' in setData()
Change-Id: I39d6494eb8179f0f7532f99458736fa5e30cdc25
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@theqtcompany.com>
Thiago Macieira
Marc Mutz
Tatiana Borisova
Ivan Solovev
Lucie Gérard
Sona Kurazyan
Luca Di Sera
Volker Hilsheimer
Marc Mutz
Allan Sandfeld Jensen
Edward Welbourne
Lars Knoll
Christian Ehrlicher
Liang Qi
Rafael Roquetto
Tor Arne Vestbø
Jani Heikkinen
Jędrzej Nowacki
Jake Petroules
Nico Vertriest
Friedemann Kleint
Oliver Wolff