+ QChar::LastValidCodePoint enum value that supercede the UNICODE_LAST_CODEPOINT macro
replace uses of hardcoded values with the new API; remove leftovers
Change-Id: I1395c9840b85fcb6b08e241b131794a98773c952
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
0xfdef-0xfdd0 is definitely 31 and not 15 :)
also fix all copy-pastes of this code (greping for '0xfdd0' helps ;)
Change-Id: I8f3bd4fd9d85f9de066f0f5df378b9188c12bd48
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Denis Dzyubenko <denis.dzyubenko@nokia.com>
Just like qMalloc/qRealloc/qFree, there is absolutely no reason to wrap these
functions just to avoid an include, except to pay for it with worse runtime
performance.
On OS X, on byte sizes from 50 up to 1000, calling memset directly is 28-15%
faster(!) than adding an additional call to qMemSet. The advantage on sizes
above that is unmeasurable.
For qMemCopy, the benefits are a little more modest: 16-7%.
Change-Id: I98aa92bb765aea0448e3f20af42a039b369af0b3
Reviewed-by: Giuseppe D'Angelo <dangelog@gmail.com>
Reviewed-by: John Brooks <john.brooks@dereferenced.net>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
QT_NO_STL is now no longer defined, so remove the conditionals and
select the STL side.
Change-Id: Ieedd248ae16e5a128b4ac287f850b3ebc8fb6181
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
QMap used to use a skiplist in Qt 4.x, which has variable
sized nodes and we can thus not optimise using custom
allocators.
The rewrite now uses a red-black tree, and all allocations
and tree operations happen in the cpp file. This will allow
us to introduce custom allocation schemes in later versions
of Qt.
Added some more tests and a benchmark. Memory consumption
of the new QMap implementation is pretty much the same as before.
Performance of insertion and lookup has increased by 10-30%. iteration
is slower, but still extremely fast and should not matter compared
to the work usually done when iterating.
Change-Id: I8796c0e4b207d01111e2ead7ae55afb464dd88f5
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
- Changed benchmarks to use TESTDATA and QFINDTESTDATA
- Fixed up targets all use tst_bench_ syntax
Change-Id: I5c2936702e248478f5df225ce38893158ee22d7f
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
It's not faster under _any_ metric than the new algorithm, and it loses a lot of
spread which is a bad thing.
Change-Id: Ic87258f1c887822ffea1cb1517355564fabc3c26
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
We must do this the same way we do all other hash algorithms for fair
comparison, as otherwise, the call to the PLT unfairly penalises
QHash<QString>'s results, as it's in a different shared object.
Change-Id: I69c891f5a97dcccdfcfbdbf32796f86242a42963
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Per the comments on Ie4100a1ca4dbe7bf1cd73de883a9854377ac2f5e, having Q_ASSERT
was not a good idea, and data functions can't really handle
QVERIFY/QCOMPARE/etc, so do this in initTestCase instead.
Change-Id: I19e61dec7fe415bb1fa0f53a2920d99b8c7c8ea7
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Similar to the UUID benchmark, but won't have any non-numerical characters.
Change-Id: I7487c97cab96fd53c180fe12061e7be3ca96e883
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
This attempts to emulate a dictionary usecase of sorts, done in code to avoid
bloating the git repository by adding an actual word list.
Change-Id: I878bc4af8877ba780ee699932f240c0d9c8ff12c
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
remove "header" and assignmets which are defaults or bogus,
reorder some assignments.
Change-Id: I67403872168c890ca3b696753ceb01c605d19be7
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
The new layout matches that of QByteArrayData and QStringData, except
for offset which is measured from the beginning of QVectorData, whereas
in those classes it (still?) references the end of the header data.
The new layout uses an extra member for storing an offset into the data,
which will allow introducing QVector::fromRawData, similar to the same
functionality already existing in QString and QByteArray.
By not using an actual array to index array members, we also steer clear
of GCC bug #43247:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43247
Change-Id: I408915aacadf616b4633bbbf5cae1fc19e415087
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This includes padding necessary to align the data array, but excludes the first
element as was done before. Size of header is the interesting piece of
information, anyway.
This simplifies calculations in a couple of places, harmonizes code with the
QRawVector fork and paves the way for further changes in QVector, namely the
memory layout.
When Q_ALIGNOF is not available, default to pointer-size alignment. This
should be honoured by malloc and won't trigger use of more expensive
aligned allocation.
Change-Id: I504022ac7595f69089cafd96e47a91b874d5771e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
For non-movable types (QTypeInfo<T>::isStatic), QVector would grow the
array linearly, and defer to qAllocMore otherwise. That property,
however, gives no indication as to how the vector will grow.
By forcing additional allocations for growing containers of such types,
this penalized exactly those objects which are more expensive to move.
We now let qAllocMore reign in growth decisions.
Change-Id: I843a89dcdc21d09868c6b62a846a7e1e4548e399
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
UUIDs are a good testcase, because the textual content is all fairly similar.
This also changes data generation to be a little neater now that we're starting
to get multiple pieces of data.
Change-Id: Ie4100a1ca4dbe7bf1cd73de883a9854377ac2f5e
Reviewed-by: Giuseppe D'Angelo <dangelog@gmail.com>
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Window system Macros where deprecated so use
Q_OS_WINCE for now. This code will need
some refactoring, but this is the first
step to it.
Change-Id: I5876b80ee45d4b38ac63fc7d51e775dc70bbd485
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
`make check' is intended primarily for running functional tests.
For the most part, it does not make sense to run benchmarks in the same
test environment as the functional tests.
Change-Id: I79f867fdab295bdbd4c4b3c785dfd7ede520022e
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Commit 4b8ceb41ae added the requirement
that pointed-to types need to be registered when registering pointer
types. Unfortunately, the implementation also affects function pointer
types.
This change whitelists 0, 1, 2 and 3 argument functions as not deriving
from QObject, forgoing the need to workaround details of the type
registration implementation when registering those function pointer
types.
Change-Id: I4d855e9d70a8179a6e31b84623ad5bf063e0d6d8
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
As in the past, to avoid rewriting various autotests that contain
line-number information, an extra blank line has been inserted at the
end of the license text to ensure that this commit does not change the
total number of lines in the license header.
Change-Id: I311e001373776812699d6efc045b5f742890c689
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Added a bit of documentation to the Java-like hashing function.
Change-Id: I3f44eee305d91b76f0f89cd1acf21f6430b9482b
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
Change-Id: Ib5abc171fb8fb70e2f73ac92ca22dc09146d8a55
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
These defines were there to aid in the commercial
licensing scheme we used long ago, and are no longer needed.
Keep a QT_MODULE(x) define so other modules continue compiling.
Change-Id: I8fd76cd5270df8f14aee746b6cf32ebf7c23fec7
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
This is a source incompatible change for Q_DECLARE_METATYPE(T*),
which now requires T to be fully defined.
The consequences of this are:
* Forward declared types can no longer be declared as a metatype.
(though this is a very uncommon thing to do).
There is a trivial workaround where necessary.
Change-Id: Id74c40088b8c0b466fcd7c55abd616f69acc82c8
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
It isn't necessarily that hashing the whole string is the main problem, as the
recently added java string benchmark appears to show, which means the original
purpose of this benchmark is rather voided.
This removal allows gradually repurposing the test towards providing general
benchmarks of QHash performance.
Change-Id: Iaab0a3b493387dcce99240632342235ed9c44d88
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
main.cpp is easier for my muscle memory to remember than qhash_string as it is
used by a number of other tests.
Change-Id: I044f995d55a4ff1328dde0ae27b6e36a80114c38
Reviewed-by: Richard J. Moore <rich@kde.org>
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Based on the unit test for data production.
Change-Id: I88a411c0079b251d3682c3fbf9fe7ed1b5457a7e
Reviewed-by: Anselmo L. S. Melo <anselmo.melo@openbossa.org>
Reviewed-by: Richard J. Moore <rich@kde.org>
This uses a similar runtime to the approach of sampling part of the string, with
the benefit that it doesn't reduce the sampling to subsections of the string.
Ironically, Java used to only sample parts of the string as well, but found that
it produced too many collisions with certain string types, so they moved to use
this method.
RESULT : tst_QHash::qhash_qt4():
0.0537 msecs per iteration (total: 110, iterations: 2048)
PASS : tst_QHash::qhash_qt4()
RESULT : tst_QHash::qhash_faster():
0.015 msecs per iteration (total: 62, iterations: 4096)
PASS : tst_QHash::qhash_faster()
RESULT : tst_QHash::javaString():
0.016 msecs per iteration (total: 66, iterations: 4096)
Change-Id: Icb5da341ab6445163f4217650a0bdb3903e50210
Reviewed-by: hjk <qthjk@ovi.com>
Note: This constitutes a break in Binary Compatibility.
Change-Id: I050587901725b701f20dd46475ae48aec28aa54d
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
It is mostly not used (most places in Qt use typename directly), so
is already not very useful.
For example typename is used in:
QDataStream& operator<<(QDataStream& s, const QVector<T>& v)
Change-Id: I85337ad7d8d4ebbb424bfa2ab9a356456ff3e90f
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
, and make it strictly a POD struct.
Since this operator was only being used to set the initial (owned) value
of the reference count, the name of the function introduced here to
replace it makes that use case explicit.
Change-Id: I2feadd2ac35dcb75ca211471baf5044a5f57cd62
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Function pointers used as template parameters must have external linkage
according to the C++ standard. The _mm_lddqu_si128() and
_mm_load_si128() intrinsic functions are declared static in most
implementations, which means we need to wrap them in a non-static
function call to be used.
Change-Id: I4e316851df890d77999649d47654f7f9a35d4080
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
qttest_p4.prf was added as a convenience for Qt's own autotests in Qt4.
It enables various crufty undocumented magic, of dubious value.
Stop using it, and explicitly enable the things from it which we want.
Change-Id: I48ab0ee64d8348cada2e6c7b27c67b6bbc36280d
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
