| Commit message (Collapse) | Author | Age | Files | Lines |
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It is a minor reduction, in release build it is ~200 bytes
Change-Id: I4f7972c95769f2e0ca1ddc935ff7a0a6b4379e2a
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
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There is no need for a custom algorithm as we can use
std::count
Change-Id: Id1ab514c7cd8f52efe49b27712121415d7ca4455
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
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Although it may seem strange that such a method is const,
optimizing doesn't affect the user-visible part of the object.
Moreover, *not* having it const makes it asymmetrical with other
methods (such as match()) which are const, and under certain
conditions optimize as well.
Change-Id: I0cd8d4a6909d00629fcc65c1c3a1f011f31db782
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
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QRingBuffer is a fully inlined class used in many I/O classes.
So, it must be as fast and small as possible. To this end, a lot of
unnecessary special cases were replaced by generic structures.
Change-Id: Ic189ced3b200924da158ce511d69d324337d01b6
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
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Due to C++'s rule of Argument-Dependent Lookup, a call to an unqualified
qHash(t) will look up qHash in T's namespace. So edit the docs saying
that it must be "global qHash" to say that it should be in the type's
namespace.
Task-number: QTBUG-34912
Change-Id: I7a72800008ccb710b4bb814e42db7a95f385f53e
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
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Change-Id: I4c5af33488a70996299289ec2b953b7bf3b2c428
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
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Remove unused and untested class functions.
Change-Id: I8eb963db0ae4be9b5cdde91f6747c4a1db4ea649
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
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We really do not need to do string parsing there.
Change-Id: Ie2277d9ff0d0445285b7108023941af111d9baca
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Blunder -- two threads may step into this method together,
both see not studied, and both study (with one leaking its study data).
This reverts commit 5fbd787cf9a72621d66604a4898f06ea4365226e.
Change-Id: Ia746925abcad1e43adf4f6f1d495b018de022b07
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
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With "QExplicitlySharedDataPointer::QExplicitlySharedDataPointer( const
QExplicitlySharedDataPointer<X> & other)" implicitly doing an
static_cast<T *>(...) on other.data(), this could lead to dangerous use
of this copy constructor.
Example code:
QExplicitlySharedDataPointer<Base> base(new Base);
QExplicitlySharedDataPointer<Derived> derived(base); // that works!
This patchs disables the use of the static_cast, and adds a new define called
QT_ENABLE_QEXPLICITLYSHAREDDATAPOINTER_STATICCAST to re-enable
that code path.
Note, that the other way-around (assigning 'derived' to 'base') still
works as intended.
Other side note: QtXmlPatterns is relying heavily on the hidden
static_cast "feature". The other default Qt modules compile fine with
the static_cast removed.
[ChangeLog][Important Behavior Changes] QExplicitelySharedDataPointer's
copy constructor which performs a static_cast from "X *" to "T *"
(when constructing a QExplicitlySharedDataPointer<T> from
a QExplicitlySharedDataPointer<X>) doesn't perform a static_cast
from "X *" to "T *" any more. Instead, an implicit cast is now
performed. This change will break compilation of code that
relied on the downcast (i.e. cast towards a more derived type) of the
templated type when copy costructing a QExplicitelySharedDataPointer
object. Please refer to the class documentation for more information
about this issue and a workaround to keep old code compiling.
Change-Id: Id32aba6cda4e6d44728d7bc3a5c0c7a20f19adc6
Reviewed-by: Kevin Funk <kevin.funk@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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A lot of code in QHash is doing casting to QHashNode while the pointer
may be of type QHashDummyNode. This is a lot of undefined behavior.
Remove QHashDummyNode and specialize QHashNode for QHashDummyValue instead.
QHashDummyValue is the only type for which QTypeInfo::isDummy is true.
Q_DUMMY and QTypeInfo::isDummy are internal API, so is QHashDummyNode, so
we can remove them.
Task-number: QTBUG-40029
Change-Id: I60c2ff0933075b9202bde89a9992746052f75133
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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It isn't a particularly complex operation, but why waste CPU cycles?
This is the kind of function that should be declared pure/const.
Change-Id: I13f03ef0f87607f7649c66beeb37614a31ef2a10
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
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The GCC documentation says that a const function is not allowed to read
global memory. This needs to be clarified: it's not allowed to read RW
global memory. It's fine to read read-only memory, as that is equivalent
to just pure code.
The QChar static out-of-line functions only lookup a property of the
given Unicode character and always return the same value.
The only exception is the decomposition() function, which returns a
QString and is therefore not allowed to be marked const.
Change-Id: Id36b2f84a1b8ff9db5acf1d4e59e8b3811068cff
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
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Also adds the 5.4.0 changes file.
Change-Id: I10967ca179b91229e7d1ee0fc666bbd8dbe54425
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Conflicts:
mkspecs/qnx-x86-qcc/qplatformdefs.h
src/corelib/global/qglobal.h
src/network/socket/qnativesocketengine_winrt.cpp
src/plugins/platforms/android/androidjniaccessibility.cpp
src/plugins/platforms/windows/qwindowswindow.cpp
Manually adjusted:
mkspecs/qnx-armle-v7-qcc/qplatformdefs.h
to include 9ce697f2d54be6d94381c72af28dda79cbc027d4
Thanks goes to Sergio for the qnx mkspecs adjustments.
Change-Id: I53b1fd6bc5bc884e5ee2c2b84975f58171a1cb8e
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Change-Id: I9835b284d6bba5f7632cae6b179c6c1b08265e5c
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
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Fix condition to allow return a valid pointer when head != 0.
Change-Id: I5215f7dfc44924016c2d9b67ab2d9935b5164d7a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
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We require the intrinsics from immintrin.h, so include it
unconditioanlly with that compiler.
Change-Id: I4a17676631f9d89e2d22e486f40c9b177ca06c1e
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
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In ICU the strength parameter decides whether a comparison is
case sensitive or not.
Fix mac comparison code. It can't have worked before.
Added some basic automated testing for QCollator.
Change-Id: I2646c464fd22ccd3a93c461fa3dba4bd1d4c7b4b
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
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The fallback for QStringLiteral in case C++11 features are not enabled
is QString::fromUtf8(), not QLatin1String().
Also, the result of a QStringLiteral expression _is_ a QString.
Change-Id: Ib9c2f4c13fff237de3acb2e0f64027bacea6271c
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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It's still not a literal type because the destructor is not constexpr
Change-Id: If89bdfdd3f0ffe9bdd5a7953e872e520e92cfd66
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
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Interestingly, before that patch this compiled fine:
typedef Q{Explicitly,}SharedDataPointer<QSharedData> Ptr;
Ptr p(new QSharedData);
auto hash = qHash(p);
This was because both Q{Explicitly,}SharedDataPointer overload 'operator
bool()' => qHash(int) was accepted. This, however, doesn't make sense.
Someone should probably take care of applying the safe bool idiom to
these classes as well.
Change-Id: I8bb6b2aacaa6166da817a6f3847093fd20a05a67
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
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It enables you to get a valid QSharedPointer instance to 'this',
when all you have is 'this'.
Task-number: QTBUG-7287
Change-Id: I3ed1c9c4d6b110fe02302312cc3c4a75e9d95a0c
Reviewed-by: Richard J. Moore <rich@kde.org>
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Add detection of MIPS DSPr2 at run-time in qsimd.cpp. This makes it
possible to have generic Qt builds for MIPS that can enable the fast
code paths for processors with the DSP ASE at run-time. Also, this
makes it possible to manually disable them by setting the environment
variable "QT_NO_CPU_FEATURE=dspr2". Last, but not least, functions
requiring DSPr2 are not enabled when running in CPUs with version-1
DSP.
Change-Id: Ia5a01d84119553c22ab83386c74a6cb8ba5fee53
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Qtbase contains four identical implementations of next power of two,
these should be shared and the implementation made available to other
qt modules, as it is also used many places outside of qtbase.
[ChangeLog][QtCore][QtMath] Introduced qNextPowerOfTwo methods.
Change-Id: Id23fbe5ad6bae647b30d5a4212c0330e48a50278
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Add conversion methods similar to those in QString to QByteArray. This
is often more useful than the QString version since std::string like
QByteArray are byte arrays.
[ChangeLog][QtCore][QByteArray] Added convenience methods to convert
directly to and from std::string.
Change-Id: I92c29d4bb1d9e06a667dd9cdd936970e2d272006
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
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Conflicts:
mkspecs/features/qt.prf
src/plugins/platforms/xcb/qxcbwindow.h
src/tools/qdoc/qdocindexfiles.cpp
src/widgets/kernel/qwidget_qpa.cpp
Change-Id: I214f57b03bc2ff86cf3b7dfe2966168af93a5a67
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Detected by clang's -fsanitize=thread in tst_qcoreapplication.
Task-number: QTBUG-39024
Change-Id: I60b7cece0384f89dc62ac5128faf39a4084e72e2
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
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HSTRING needs to be released or handles will be leaked.
Instead use HString which takes care of resource management
on its own.
Task-Number: QTBUG-38115
Change-Id: I2c767776c1f22f45acd8dd77b693f30d63d894b9
Reviewed-by: Andrew Knight <andrew.knight@digia.com>
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
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These functions are not used anywhere. Since the classes are not
documented, we're free to remove the inline functions.
The implementation of the const function in QMapNode is also bogus: it
discards a const qualifier.
Task-number: QTBUG-39301
Change-Id: Ib8fd10a4da4b58a62cef17017ea6127c4d964325
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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Change-Id: I782b18b9f82a72a29371564838252e1838faf86c
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
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Change-Id: If223dd73b9558a0f5144be38f19a61316f8c807b
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
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Change-Id: Ia23406ee80e83071a129606b76f78e2b6d0cf32e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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GCC 4.9 now allows us to #include any and all intrinsics headers, not
just the one for which we're compiling code, a behavior that ICC and
MSVC have had for some time. With that, we're able to have the functions
for different targets in the same source file. See the GCC manual:
http://gcc.gnu.org/onlinedocs/gcc/Function-Multiversioning.html
This functionality is notified by the QT_COMPILER_SUPPORTS_HERE(XXX)
macro, which indicates that all the intrinsics from
QT_COMPILER_SUPPORTS_xxx are available and enabled. To complement, a
QT_COMPILER_SUPPORTS(XXX) macro is also added.
Unlike ICC and MSVC, GCC requires a special function attribute, which
will also cause code optimization. That's the QT_FUNCTION_TARGET macro.
Note: because of the absence of the target attribute, ICC and MSVC will
not generate instructions with the VEX prefix unless they only exist
with the VEX prefix or if -mavx / -arch:AVX are enabled.
Change-Id: I0c1880c20324bd8e0fc68a863e36d1fa7755dff0
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@digia.com>
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Change-Id: Ia36e93771066d8abcf8123dbe2362c5c9d9260fc
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Any bootstrapped tool is a development tool, by definition. So the
effects of seeding the hash with a random number can cause the same
source input to produce different binary results, which can throw some
caching tools into disarray (like the Open Build System).
There should be minimal fall out from the reduced protection against
DoS. Since those are only development tools, "specially crafted" input
implies the developer is DoS'ing him/herself.
Note: the change to qhash.cpp applies to moc and rcc, which are always
bootstrapped.
Change-Id: I061ab52036e40627c0703f1bf881455cbf848f43
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>
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Change-Id: I444daf8e81257f55746f9d32fbcb60a2e1b69444
Reviewed-by: Liang Qi <liang.qi@digia.com>
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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Without it, one might run the risk of QDateTime::currentDateTime()
returning an invalid QDateTime the first time after changing timezone.
Change-Id: I3efb04d41e7fe4685f6cc5fb41b68424eb4b9eb8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Change-Id: If1abbe7810ea43ae750db91066f9f579c79b2289
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I tested only the 64-bit build. The 32-bit build was reading garbage
past the end of the strings in some cases.
Change-Id: If6d239754e16a17cc4e8bb71e2b7778429dfa7ba
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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AVX2 brings the new PMOVZXBW instruction that extends from one 128-bit
SSE register to an 256-bit AVX register. With that, the main decoding
code is just two instructions (the loop requires a couple more to
maintain the offset counter and do the end-of-loop check).
This buys us another 4% performance improvement in the fromLatin1 code,
calculated on top of the VEX-encoded SSE2 code (which is already a little
better than plain SSE2).
Change-Id: I675fa24de4fa97683b662f19d146047251f77359
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@digia.com>
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It's a common need to assign a variable to something when entering a
code block, and then revert it upon exit. qscopedvaluerollback can
be used for this. But as a convenience, this patch adds an
extra constructor so that you can "protect" and set a variable
in one go instead of using two lines.
Change-Id: If4b89d3a5ba32ef2304bda058b1b6050932612ed
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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First and foremost, the STL-style iterators don't do this. Those don't
provide a guarantee that the container won't get shared again while the
iterator is active.
Second, there's no protection against a second mutable iterator being
created and resetting the sharable flag back to true.
[ChangeLog][Important behavior changes] The mutable Java-style iterators
like QListMutableIterator and QHashMutableIterator no longer set the
parent container to unsharable mode. If you create a copy of the
container being iterated on after the iterator, any changes done with
the iterator might affect the copy too.
Discussed-on: http://lists.qt-project.org/pipermail/development/2014-February/015724.html
Change-Id: Iccfe411d5558c85ae459cff944215614c392388e
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
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Change-Id: Iff7d9ec85a095c6712e6045e7708bb88eac629e1
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
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Up to now, Qt had at least 3 different implementations of the mid().
Only QString::mid implementation was not crashing on edge cases and
was protected against overflows, therefore I picked that one as the
base implementation, even if it has weird semantics for an invalid
input.
As a side effect QVector::mid was slightly optimized to not detach in
all cases (which follows current QList behavior). Documentation of
QVector::mid and QList::mid was updated to not mention "copy of data"
which could suggest that the mid() result is detached.
QStringRef::mid was fixed and now it follows general Qt behavior, by
returning a null value for a null input.
Change-Id: Ie9ff5d98372bd193d66508e6dd92b6ed1180ad9b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Per Oswald's suggestion, just don't touch PCRE if it's not needed.
This can save ~500kB between text and data in QtCore.
Change-Id: Ia10c819c7fff562dda84ab0b77194baffbc8904e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
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Conflicts:
src/gui/kernel/qguiapplication.cpp
Change-Id: Ibe75603dc8a51769db6550ea3f07bc8d19b0be85
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Previously, this produced wrong results, for example -3:30
became -3:-30.
Change-Id: I10efdfb48e5542b917c86b29cf8a99bfc26f7fe0
Reviewed-by: John Layt <jlayt@kde.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Previously, parsing negative timezone offsets with minutes != 00
produced wrong results.
Examples (in -> out)
-00:15 -> +00:15
-01:15 -> -00:45
Change-Id: I6fa30810a08bdf2996365661720b2e362e8aeb93
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: John Layt <jlayt@kde.org>
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refs/staging/dev
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