The use of any broken-down components of the query now needs
QUrlQuery.
The QUrl constructor and toString() are now rehabilitated and the
preferred forms. Use toEncoded() and fromEncoded() now only when we
need to store data in a QByteArray or the data comes from a QByteArray
anyway. Change to toString() or the constructor if the data was in a
QString.
Change-Id: I9d761a628bef9c70185a48e927a61779a1642342
Reviewed-by: Lars Knoll <lars.knoll@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>
The code was only allocating memory for the next insertion
leading to a reallocation of the whole data for every
single insertion.
The code now reserves some space and uses a decent growth
strategy to avoid repeated reallocs.
Change-Id: I48b0feab71ba8ca73e7037f8460080f198b2f009
Reviewed-by: Jamey Hicks <jamey.hicks@nokia.com>
- Added toByteArray() and fromByteArray() benchmark tests.
Performance tests to measure QVariantMap to bytearray
and bytearray to QVariantMap.
Use case: Interprocess communications via local socket
Change-Id: If5e94ff870890b2ebb665f3cc38f5c33b34547f4
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.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>
A case of a custom type creation was not covered before.
Change-Id: Icd2a7d63633f8e40d9d4a8a26e0eb0896fc85ec8
Reviewed-by: Kent Hansen <kent.hansen@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>
In Qt5 the meta-data format will be changed to not store the
method signature string explicitly; the signature will be
reconstructed on demand from the method name and parameter type
information.
The QMetaMethod::signature() method returns a const char pointer.
Changing the return type to QByteArray can lead to silent bugs due to
the implicit conversion to char *. Even though it's a source-
incompatible change, it's therefore better to introduce a new
function, methodSignature(), and remove the old signature().
Task-number: QTBUG-24154
Change-Id: Ib3579dedd27a3c7c8914d5f1b231947be2cf4027
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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 abstraction imposed serious performance penalties and is being
dropped from the public API.
In particular, by allowing file names to be arbitrarily hijacked by
different file engines, and requiring engines to be instantiated in
order to decide, it imposed unnecessary overhead on all file operations.
Another flaw in the design with direct impact on performance is how
engines have no way to provide (or retain) additional information
obtained when querying the filesystem. In many places this has meant
repeated operations on the file system, where useful information is
immediately discarded to be queried again subsequently.
For Qt 4.8 a major refactoring of the code base took place to allow
bypassing the file-engine abstraction in select places, with
considerable performance gains observed. In Qt 5 it is expected we'll be
able to take this further, reaping even more benefits, but the
abstraction has to go.
[Dropping this now does not preclude that virtual file systems make an
appearance in Qt at a later point in Qt 5's lifecycle. Hopefully with a
new and improved abstraction.]
Forward declarations for QFileExtension(Result) were dropped, as the
classes were never used or defined.
Tests using "internalized" classes will only fully run on developer
builds. QFSFileEngine was removed altogether from exception safety test,
as it isn't its intent to test internal API.
Change-Id: Ie910e6c2628be202ea9e05366b091d6d529b246b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.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>
This patch improves performance when constructing a custom type in
a QVariant by ~ 7-20% (instructions count) depending on the type size
and metatype attributes.
Change-Id: Ic2707ff5abd689b66e23c1794f111504bf9b3b01
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Currently QMetaType API contains almost only static methods. This works
nice until someone needs more information or needs to do more operations
on a type. In this case every function call has to do type dispatch.
This API allows to avoid redundant type dispatching, by caching a
type information in a QMetaType instance. It gives significant
performance boost especially for custom types (up to 9x).
Change-Id: I223d066268402e072e41ca1d0a3e7bc160655d7f
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
We should not assume that the first type id is 0.
Change-Id: I17ba6ba57e97ebd495904bfd11235fe458f214e5
Reviewed-by: Kent Hansen <kent.hansen@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>
There is no reason to keep two separated core types sets. It
couldn't be fixed before Qt5 because of binary compatibility promise.
This patch merges QMetaType core types with ext core types.
This "simple" operation consists of:
- QDataStream version was incremented, because type ids are
saved in QVariant's data stream.
- QMetaType LastExtCoreType and FirstExtCoreType were replaced by
LastCoreType, FirstCoreType and new QMetaType::HighestInternalId.
- New tests checking QVariant data stream for Qt4 and for Qt5 versions
were added.
Change-Id: I02dd74d29317365c297a789a4eb7c9c5edc3b231
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
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 imports the JSON support for Qt 5 from
playground/qtbinaryjson.
It adds a fast, fully compliant json parser, a
convenient C++ API, conversion to and from
QVariants and a binary format for JSON that is
extremely fast to use together with the C++ API.
Change-Id: If9e3a21a4241d388d0abaa446b6824f9cc6edb1c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.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>
