Commit Graph

276 Commits

Author SHA1 Message Date
Liang Qi
0aa2d318b1 Merge remote-tracking branch 'origin/5.5' into dev
Conflicts:
	src/corelib/global/qglobal.cpp
	src/corelib/global/qglobal.h
	src/corelib/global/qsysinfo.h
	src/corelib/global/qsystemdetection.h
	src/corelib/kernel/qobjectdefs.h
	src/plugins/plugins.pro
	tests/auto/widgets/itemviews/qlistview/qlistview.pro

Change-Id: Ib55aa79d707c4c1453fb9d697f6cf92211ed665c
2015-07-01 11:05:26 +02:00
Ulf Hermann
5ab74ffca1 Namespace copy of QFileSystemIterator in QDirIterator benchmark
Otherwise you cannot link it statically against QtCore.

Change-Id: I4ac35602cea2192974f3e96ecad35edac976ce27
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
2015-06-12 13:52:55 +00:00
Oswald Buddenhagen
d32f47b703 fix usage of wince scope
Fix style issues along the way.

Change-Id: Ic6a6de28e198eb0b14c198b802e78845703909b9
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
2015-06-05 10:29:10 +00:00
Marc Mutz
87d57d1994 Fix users of QTextLayout::additionalFormats to use the new API
QTextLayout::additionalFormats setters and getters using QList<FormatRange> have
been deprecated; port to the QVector versions.

Moved op== definition for FormatRange needed in tst_qsyntaxhighlighter.cpp
to a friend declaration in FormatRange itself, because MSVC 2008 doesn't find
it otherwise.

Change-Id: Ibab6589df057f02377d895079b56395859e3401e
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
2015-05-30 10:56:24 +00:00
Simon Hausmann
7f8719e663 Merge remote-tracking branch 'origin/5.5' into HEAD
Change-Id: I487a4b7c05687a10c498ac219c31367d4db6fbc0
2015-05-04 13:19:31 +02:00
Allan Sandfeld Jensen
041cbe4b38 Add missing RGB32 <-> RGB30 convertions
Completes the inplace converters so that we can rely on inplace
conversions to succede as long as the image depth is the same.

Change-Id: Ia1ae34b5de1bc16e87ff5403bdacfcae44a22791
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
2015-04-30 19:27:39 +00:00
Liang Qi
aed5a71683 Merge remote-tracking branch 'origin/5.5' into dev
Conflicts:
	src/corelib/statemachine/qstatemachine.cpp
	src/corelib/statemachine/qstatemachine_p.h
	src/gui/painting/qdrawhelper.cpp
	src/plugins/platforms/xcb/qxcbnativeinterface.cpp
	src/plugins/platforms/xcb/qxcbwindow.cpp
	src/plugins/platforms/xcb/qxcbwindow.h
	src/testlib/qtestblacklist.cpp
	src/tools/qdoc/node.cpp
	src/tools/qdoc/node.h
	tests/auto/gui/painting/qcolor/tst_qcolor.cpp

Change-Id: I6c78b7b162001712d5774293f501b06b4ff32684
2015-04-22 09:25:54 +02:00
Allan Sandfeld Jensen
7432c7c08a Cleanup and optimization of qimage smoothscale
Cleaning up smoothscale code. Upscaling is improved using existing
optimized interpolation methods, and downscale is given SSE4.1
optimized versions.

Change-Id: I7cdc256c26850948aef7dae26fda1622be6b8179
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
2015-04-15 11:25:41 +00:00
Simon Hausmann
198606f6db Merge remote-tracking branch 'origin/5.5' into dev
Conflicts:
	src/plugins/platforms/xcb/qxcbnativeinterface.cpp
	src/plugins/platforms/xcb/qxcbnativeinterface.h

Change-Id: I31b38ba439b9341d51a01c0fd54bea33f7410076
2015-03-16 10:31:07 +01:00
Rafael Roquetto
00c09aaf5b Fix build of tests on QNX.
Change-Id: Ib28e42e3eb10e26555fe392c55534f715bee5f8b
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
2015-03-14 07:05:34 +00:00
Alex Trotsenko
9dd0bb851b Make QRingBuffer a 64-bit safe
According to I/O API, QIODevice and its inherited classes should be
able to process a full 64-bit offsets and lengths. This requires
64-bit parameters in operations with internal buffers. Rework
QRingBuffer to avoid implicit truncation of numbers and fix some
64-bit issues in code.

Change-Id: Iadd6fd5fefd2d64e6c084e2feebb4dc2d6df66de
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2015-03-12 05:33:20 +00:00
Allan Sandfeld Jensen
59f168c5e5 Optimize fallback RGB888 to RGB32 conversion
Improves the conversion from RGB888 to RGB32 on platforms without SIMD
versions. This includes the fallback used on non-neon ARM devices.

Besides image conversion the routine is also used for decoding JPEG.

On x86 this version is within 0.7x of the speed of the SSSE3 version.

Change-Id: Id131994d7c3c4f879d89e80f9d6c435bb5535ed7
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
2015-03-03 13:38:17 +00:00
Allan Sandfeld Jensen
22b5c39e8e Optimize generic conversion and remove now obsolete direct conversions
There are many direct QImage conversions that doesn't need to be direct
but only are because they are faster than the generic conversion. This
patch optimizes the generic conversions and then removes all the direct
conversions that are now no faster than the generic.

Change-Id: I3dc5f44cc7f6358fd66420e9974eebaf2c7ca59c
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
2015-02-13 13:20:52 +00:00
Marc Mutz
09205f662e QtGui: assorted migrations to QString::asprintf
Change-Id: Ibb177b22064efcad56ace60935e9c8759a87a3c9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2015-02-12 19:39:54 +00:00
Jani Heikkinen
83a5694dc2 Update copyright headers
Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.

Outdated header.LGPL removed (use header.LGPL21 instead)

Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing
combination. New header.LGPL-COMM taken in the use file which were
using old header.LGPL3 (src/plugins/platforms/android/extract.cpp)

Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license
combination

Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe
Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
2015-02-11 06:49:51 +00:00
Allan Sandfeld Jensen
89edf43c44 Generate SSE4.1 versions of premultiplying methods where convenient
The autovectorized versions of premultiplying conversions are almost
twice as fast with SSE4.1 as with SSE2. Therefore this patch lets
compilers that can make those versions convenient without duplicating
code do that and lets us use them when available.

Change-Id: I699035963abe55a38b9ef8ba7b4a8c961c8dfcdd
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
2015-02-04 19:37:22 +00:00
Tor Arne Vestbø
c5db8fc74a Make it more obvious that Q_WS_ is dead code, and should perhaps be ported
We still have a bunch of Q_WS_ ifdefs in our code, which are easy to
mistake for Q_OS_ ifdefs when quickly scanning the code. By renaming
the ifdefs we make it clear that the code in question is dead.

In incremental follow-ups, we can then selectively either remove, or
port, the pieces that are dead code.

Change-Id: Ib5ef3e9e0662d321f179f3e25122cacafff0f41f
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
2015-02-03 11:49:14 +00:00
Allan Sandfeld Jensen
9be87085d8 Only use 32bit version of qPremultiply
With auto-vectorization enabled in QtGui, the 32bit version of
qPremultiply is faster than the 64bit version since it can be vectorized
wider (4x on 128bit as opposed to 2x). Since all our important 64bit
targets have SIMD, that makes the 64bit version pointless.

Change-Id: I4e9070a3a3c8e2b54f17a95ba0aee0405cbb8ec9
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
2015-02-02 11:14:00 +00:00
Lars Knoll
bcf6a3eb34 Remove unused class QPaintBuffer
The class hasn't been used for a while anymore. Since it's
private, simply remove it from QtGui.

Change-Id: Ia0911d1c8b8836d963a51c8e354c96bc1ee4093f
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>
2015-01-28 15:44:18 +00:00
Frederik Gladhorn
b6191b16d4 Merge remote-tracking branch 'origin/5.4' into dev
Conflicts:
	src/corelib/global/global.pri
	src/corelib/global/qcompilerdetection.h
	src/corelib/global/qglobal.h
	src/corelib/tools/qdatetime.cpp
	src/plugins/platforms/xcb/qxcbscreen.h
	src/plugins/platforms/xcb/qxcbwindow.h
	src/widgets/dialogs/qcolordialog.cpp
	src/widgets/dialogs/qcolordialog_p.h
	tools/configure/configureapp.cpp

Change-Id: Ie9d6e9df13e570da0a90a67745a0d05f46c532af
2015-01-21 11:10:14 +01:00
Rainer Keller
f6a59f8def Benchmarks: Build gui benchmarks only when gui module available
Change-Id: I57fc2f09a4e31e379c256dfe3f5d7546cdcf2b4b
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@theqtcompany.com>
2015-01-16 08:14:49 +01:00
Thiago Macieira
cf4b413fa4 Make QtDBus unit tests compile with runtime dbus-1 too
There's a change in Qt 5.4.0 that makes Qt compile with its own set of
D-Bus headers, which means QT_CFLAGS_DBUS may be empty. Thus, we can't
compile or link if we're using the actual libdbus-1 API to build the
test.

This commit makes these unit tests use the same dynamic loading
mechanism.

Change-Id: I56b2a7320086ef88793f6552cb54ca6224010451
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
2015-01-06 18:16:32 +01:00
Thiago Macieira
1fc4053337 Allow the QtDBus type benchmark to run without libdbus-1 found
Change-Id: I1086e6cd6534dc96311e981cc9c73f501c1128ac
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@theqtcompany.com>
2015-01-06 18:16:09 +01:00
Robin Burchell
442eee3cda QStack: Add a simple benchmark.
This covers the only real additions over QVector: push and pop. Really, there
isn't too much specific to benchmark here, but we're interested in one specific
case: that of pushing and popping a single item repeatedly.

With the current QVector behavior, this causes constant deallocation, which
makes it morbidly slow. This behavior will be reviewed in a subsequent commit.

Results (not that anyone really cares) for me:
    PASS   : tst_QStack::qstack_push()
    RESULT : tst_QStack::qstack_push():
         1.9 msecs per iteration (total: 61, iterations: 32)
    PASS   : tst_QStack::qstack_pop()
    RESULT : tst_QStack::qstack_pop():
         8.2 msecs per iteration (total: 66, iterations: 8)
    PASS   : tst_QStack::qstack_pushpopone()
    RESULT : tst_QStack::qstack_pushpopone():
         80 msecs per iteration (total: 80, iterations: 1)

Change-Id: I3530888abbfcfcef39318d6be6d5b07306a4704e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2014-12-30 19:25:58 +01:00
Frederik Gladhorn
aaff94c2df Merge remote-tracking branch 'origin/5.4' into dev
Conflicts:
	src/corelib/tools/qbytearray.cpp
	src/gui/kernel/qplatformsystemtrayicon.cpp
	src/gui/kernel/qplatformsystemtrayicon.h
	src/plugins/platforms/xcb/xcb-plugin.pro

Change-Id: I00355d3908b678af8a61c38f9e814a63df808c79
2014-12-29 16:37:38 +01:00
Thiago Macieira
d55db285fc Autotest: Fix a race condition in launching the QtDBus sub-processes
Wait for the subprocess to print "ready" before assuming that it is
ready to receive calls. waitForStarted() will return as soon as the
child is running, but it may not have registered on D-Bus yet.

This also solves the synchronization problem more elegantly than how
tst_qdbusmarshall.cpp was trying to do it.

Change-Id: I548dfba2677cc5a34ba50f4310c4d5baa98093b2
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
2014-12-20 07:37:17 +01:00
Thiago Macieira
36314ae75f Fix handling of subprocesses for QtDBus unit tests on Windows
The executables are not in the same dir as on Unix, so we need to use
QFINDTESTDATA to find them. The DESTDIR setting prevents qmake from
placing the executables in a "debug/" subdir.

Change-Id: I1d6d10e6f6f109f55fd9809dcf83da0386f38772
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
2014-12-20 07:37:12 +01:00
Thiago Macieira
91ae988b5c Remove unnecessary adding of test rows in the QtDBus type benchmark
No need to loop twice to add the "native" entries, since they are added
by the helper function anyway.

Change-Id: I9caabc6fc4973a90b483840815769b1351947a89
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
2014-12-20 07:36:06 +01:00
Simon Hausmann
015002fec9 Merge remote-tracking branch 'origin/5.4' into dev
Conflicts:
	doc/global/template/style/online.css
	mkspecs/android-g++/qmake.conf

Change-Id: Ib39ea7bd42f5ae12e82a3bc59a66787a16bdfc61
2014-12-10 07:58:06 +01:00
Alejandro Exojo
6ea6ee7a12 Adjust DBMSType to DbmsType to follow conventions
The enum was made public in f84b00c6d2, but this
makes it follow the convention to camel case acronyms too before it's too late
to change it.

Change-Id: Ibb81e9221cb73fe0502d0a26f2d73512dd142f08
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2014-11-26 10:47:32 +01:00
Kent Hansen
0678d7c43c Add QMetaType::type(QByteArray) function
QMetaType::type(const char *) requires that the string argument is
0-terminated. This new overload makes it possible to query the type
of a string with an explicit length.

In particular, QByteArrays constructed by QByteArray::fromRawData(),
for example from a substring of a normalized method signature (the
"int" part of "mySlot(int"), can now be queried without making a copy
of the string.

Also, Qt5 meta-objects represent type names as QByteArray literals,
which can be fed directly to this new QMetaType::type() overload (no
need to call strlen).

Change-Id: I60d35aa6bdc0f77e0997f98b0e30e12fd3d5e100
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2014-10-31 12:17:57 +01:00
Marc Mutz
03e794b7a6 Add benchmark for QString::section()
Change-Id: I7ca4ceb8cfa7a3df384400a1b3ebc9be2502e396
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
2014-10-04 13:57:55 +02:00
Oswald Buddenhagen
189dc655bb Merge remote-tracking branch 'origin/5.4' into dev
Conflicts:
	src/corelib/tools/qbytearray.cpp
	src/gui/image/qimage.cpp
	src/gui/image/qppmhandler.cpp
	src/gui/kernel/qguiapplication.cpp
	src/gui/painting/qpaintengine_raster.cpp

Change-Id: I7c1a8e7ebdfd7f7ae767fdb932823498a7660765
2014-09-29 14:08:49 +02:00
Matt Broadstone
f84b00c6d2 Expose QSqlDriverPrivate dbmsType in public QSqlDriver api
dbmsType was previously kept as a private variable in QSqlDriverPrivate,
however it's particularly useful for QODBC users.

[ChangeLog][QtSql][QSqlDriver] Add support for determining DBMS type from SQL driver.

Change-Id: If1c221520da9ac4ccef85a02db078679d76eac92
Reviewed-by: Mark Brand <mabrand@mabrand.nl>
2014-09-24 14:44:49 +02:00
Matti Paaso
974c210835 Update license headers and add new license files
- Renamed LICENSE.LGPL to LICENSE.LGPLv21
- Added LICENSE.LGPLv3
- Removed LICENSE.GPL

Change-Id: Iec3406e3eb3f133be549092015cefe33d259a3f2
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>
2014-09-24 12:26:19 +02:00
David Faure
31c6d9f04b QTextStream: add fast path for writing char and QChar.
Avoids allocating a QString for every char being written out.
The benchmark went from 5.5 ms per iteration to 0.8 ms,
and from 40 million instructions to 6 million.

Found using Milian Wolff's heaptrack tool.

Change-Id: I1784c47b944454bc947a607a22c39d249372ed55
Reviewed-by: Adam Majer <adamm@zombino.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
2014-09-12 02:07:36 +02:00
Thiago Macieira
c250a0ec3a Unify and optimize QByteArray::to{Upper,Lower}
Do a check first if we need to transform before doing the transform.
This means we won't detach when transforming data that is already
correct.

And instead of using QChar, use our own hand-rolled table. In a proper
LTO build, the QChar calls would be resolved to a lookup of the Unicode
data, but not many people do LTO builds, Therefore, this means a great
speed-up is achieved by simply avoiding the function call. The extra
gain in performance comes from the simpler translation table instead of
the more complex full-Unicode data.

Also as a consequence, this changes the handling of two characters in
Latin 1: 'ß' should be uppercased to "SS" but we won't do it, and 'ÿ'
can't be uppercased in Latin 1 ('Ÿ' is outside the range).

Benchmarking is included. Comparing the Qt 5.4 algorithm to the new code
is almost 20x faster. Other alternatives are included in the benchmark
and are all faster than the current code, though slower than the new
one. While all of them could compress the tables to be smaller or shared
between uppercasing and lowercasing, they would also expand to more code
(though probably less than the extra bytes required in the full
translation table). In the trade-off, I decided to go with simplicity
and most efficient code.

Change-Id: I002d98318d236de0d27ffbea39d662cbed359985
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
2014-08-19 03:39:05 +02:00
Thiago Macieira
db851ed5d1 Trim the QString benchmark test
The comparison, Latin 1 and UTF-8 benchmarks contained in this file are
stale. The implementation changed in Qt 5.3 and this benchmark couldn't
be updated (test data too large for Qt).

Please contact Thiago Macieira to obtain the benchmarks and test data.

Change-Id: I48c19b1f1711eb73c953a30ed4da510e97a62472
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2014-08-09 15:36:36 +02:00
Frederik Gladhorn
1e2af80785 Fix int conversion to string
clang warning: adding 'int' to a string does not append to the string

Change-Id: I6dc393269a52e9482fde106c17132336cf5ce226
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
2014-08-08 10:45:53 +02:00
Jędrzej Nowacki
82d4c4a039 Add missing to gui/kernel benchmarks.
kernel.pro was not updated.

Change-Id: Ibe11aaf5d6e788dacd2a2d33088fb9445334fb4e
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>
2014-07-28 08:39:33 +02:00
Jędrzej Nowacki
21a58910b2 Remove useless QMetaType benchmarks
Cost of a type lookup for core built-in types is really small, just few
cpu instructions, but the benchmark was testing create() and destroy()
functions (in a different fashion) which by definition allocate and
de-allocate memory. These memory operations are significantly more
expensive which obfuscate the results.

Change-Id: I33c679f57e6c2b57e98328f076dfe249ab7bcde8
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Stephen Kelly <steveire@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2014-07-28 08:39:29 +02:00
Alex Trotsenko
324351f6c9 Integrate tst_bench_qringbuffer into the build tree.
Change-Id: Id1d091889c3ba5e343d1237f016fdc22f7dfe413
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
2014-07-25 17:50:30 +02:00
Thiago Macieira
1602a091c6 Fix compilation on ARM without ARMv6T2
The "rbit" instruction requires ARMv6T2 or higher. This was found in the
CI when building the imx6 target:

Compiler: arm-poky-linux-gnueabi-g++
Flags: -mfloat-abi=hard -mfpu=neon
Errors from the assembler:
  {standard input}:3078: Error: selected processor does not support ARM mode `rbit r3,r3'
  {standard input}:7341: Error: selected processor does not support ARM mode `rbit ip,ip'

That compiler defaults to ARMv5T. That's obviously wrong for an i.MX 6,
which is a Cortex-A9 (ARMv7), but the correction applies for older
processors.

Change-Id: I56c276fa411977dd7cd867d62adf021e4909302c
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
2014-07-25 17:48:14 +02:00
Alex Trotsenko
df4f334ad0 Rewrite QRingBuffer
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>
2014-07-24 17:31:20 +02:00
Friedemann Kleint
eb66916082 Fix some compiler warnings in benchmark tests.
main.cpp(332) : warning C4307: '*' : integral constant overflow
tst_qpainter.cpp(1293) : warning C4305: '+=' : truncation from 'double' to 'float'
tst_qpainter.cpp(1474) : warning C4305: '+=' : truncation from 'double' to 'float'
tst_qtbench.cpp(155) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data
main.cpp(68) : warning C4189: 'fontHeight' : local variable is initialized but not referenced

Change-Id: If6aadd50df7c5cf7d0f33791c9247730a47ddd27
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
2014-07-14 10:55:55 +02:00
Friedemann Kleint
27797cb37a MSVC: Fix the compilation of benchmark tests with strict string literals.
Introduced by 9f0e5d00ab .

Change-Id: I704501bd7e543d971f9b8c9e75746b5749126c5f
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@digia.com>
2014-07-10 09:02:04 +02:00
Rainer Keller
5835407df1 Check for boost header in sysroot
The check has to detect if boost header is present in the system we are
building for.

Change-Id: I700a11df208c8852ba094d8bff387ad21fa309b2
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
2014-07-10 08:10:52 +02:00
Maurice Kalinowski
e909b760fa Compile fix for configuration without SSL support
Change-Id: Ic0f7e2bfd1b5535d4a460a88a9152a5319ed00f6
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
2014-07-07 13:06:29 +02:00
Thiago Macieira
7b7c37ab94 Add a benchmark test for QCryptographicHash
Some quick benchmarks against GNU coreutils 8.21 and OpenSSL 1.0.1e
(time in µs; time for coreutils and OpenSSL include the loading of the
executable):

             Qt                 Coreutils                OpenSSL
n    SHA-1 SHA-224 SHA-512  SHA-1 SHA-224 SHA-512  SHA-1 SHA-224 SHA-512
0      0      0       0      717    716     700     2532   2553    2522
64k   120    484     381     927   1074     966     2618   2782    2694
Diff  120    484     381     210    358     266       86    229     172

The numbers for Qt are pretty stable and vary very little; the numbers
for the other two vary quite a bit, since they involve launching and
executing separate processes. We can take the lesson that we're in the
same ballpark for SHA-1 and we should investigate whether our SHA2
implementation is sufficiently optimized.

Change-Id: Ib081d002ed57c4f43741eca45ff5cd13b97b6276
Reviewed-by: Richard J. Moore <rich@kde.org>
2014-04-04 01:29:37 +02:00
Peter Hartmann
1de244ea65 network: add support for the SPDY protocol
Currently the only supported SPDY version is 3.0.

The feature needs to be enabled explicitly via
QNetworkRequest::SpdyAllowedAttribute. Whether SPDY actually was used
can be determined via QNetworkRequest::SpdyWasUsedAttribute from a
QNetworkReply once it has been started (i.e. after the encrypted()
signal has been received). Whether SPDY can be used will be
determined during the SSL handshake through the TLS NPN extension
(see separate commit).

The following things from SPDY have not been enabled currently:
* server push is not implemented, it has never been seen in the wild;
  in that case we just reject a stream pushed by the server, which is
  legit.
* settings are not persisted across SPDY sessions. In practice this
  means that the server sends a small message upon session start
  telling us e.g. the number of concurrent connections.
* SSL client certificates are not supported.

Task-number: QTBUG-18714

[ChangeLog][QtNetwork] Added support for the SPDY protocol (version
3.0).

Change-Id: I81bbe0495c24ed84e9cf8af3a9dbd63ca1e93d0d
Reviewed-by: Richard J. Moore <rich@kde.org>
2014-02-19 21:44:15 +01:00