Commit Graph

10875 Commits (e1e2b2d8ca89bbd90afe3e884e95bc7372bd22d5)

Author SHA1 Message Date
hjk 7a47aebe9e Let QLoggingCategory::defaultCategory return a pointer
The pointer can be null. Going trough the reference invokes undefined
behavior here.

Change-Id: Ia84e4e732cdcbbaee0f5f0679765d18069ea8b2d
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
2013-10-11 19:15:29 +02:00
Tor Arne Vestbø dd5e40d9c6 Allow custom definition of Q_FORWARD_DECLARE_OBJC_CLASS and friends
Change-Id: I761ef508672d5d4e8b9067a1b5f91debe09607d4
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
2013-10-11 18:49:12 +02:00
Kevin Ottens d8d6880682 Reduce risks of lock file corruption
Trying to do as few operations as possible once the file got opened.
That includes generating the data which will go in the file. Indeed if
we crashed at that point the lock file is already emptied. Could happen
because of the qAppName call. It's then safer to prepare the data
upfront, and just open/write/close if possible.

Change-Id: Iad32fa822c6a5958ae89d84a2fe02ed5366ea278
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
2013-10-11 18:47:27 +02:00
Marc Mutz 059857d4d5 QVector: add some functions missing for QList compat
Eases migration from QList to QVector.

Had to rename the 'length' parameter to mid() to suppress
-Wshadow warnings.

Task-number: QTBUG-3781

Change-Id: I755c6caefe4de81ea42a81b1c76aab728e639613
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
2013-10-11 18:47:27 +02:00
Liang Qi 46cde99c57 add a missing break in QGuiApplicationPrivate::processWindowSystemEvent
Task-number: QTBUG-34016
Change-Id: Ifbb4a63845328e32fb0ad679415dca0f90dde624
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
2013-10-11 18:47:27 +02:00
Allan Sandfeld Jensen 9e7fa9f72b Make QSystemTrayIcon::showMessage invokable
Qt WebKit's HTML5 web notifications rely on QSystemTrayIcon::showMessage
to be invokable since the lower WebCore components can not link directly
to QWidgets.

Change-Id: I952de47ed8a90553a8f1ac30256d77ef6014da44
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
2013-10-11 18:47:27 +02:00
Allan Sandfeld Jensen 5e4b9f1154 Use QAtomicInt ref/deref pattern
Change check of QAtomicInt::load with the preferred ref() deref() pattern.

Change-Id: I12d2e24812259c16623c8a59cac30cafa4b05565
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
2013-10-11 18:47:27 +02:00
Allan Sandfeld Jensen 894f867090 Memory leak with Small-caps QRawFont
Make sure we deallocate the scaled rawfont, when it is not used due
to a cached engine being used instead.

This fixes a major memory leak in Qt WebKit when using Small Caps in the
complex font path. The complex font path is always used for small caps
since Qt 5.1.

Task-number: QTBUG-33576

Change-Id: I500db9ae6f6576734f1a972387a1a488218a9db6
Reviewed-by: pierre.rossi@digia.com
Reviewed-by: Pierre Rossi <pierre.rossi@gmail.com>
2013-10-11 12:10:20 +02:00
Andy Shaw 6f65466137 Ensure CSS rules are inherited from the parent tags
When CSS was set in the head tag then it was not being inherited by the
child tags. This ensures that the inhertiance happens and that the deeper
the CSS is set then it will ensure that it has precedence over the ones
set on the parent.

A test is added that shows the standard inheritance from the head tag and
the precedence from child tags in effect too.

Task-number: QTBUG-28770

Change-Id: I30be3ec141b2cd8d6e0db8a92669aed34da93b33
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
2013-10-11 12:05:59 +02:00
Laszlo Agocs c16dbfbdde eglfs: Show the mouse cursor when a mouse is connected
Currently the mouse cursor is shown by default and it can be
turned off by setting QT_QPA_EGLFS_HIDECURSOR to a non-zero
value. This is now enhanced with an automatic detection step
via QDeviceDiscovery (the helper the input code use anyway).

From now on if QT_QPA_EGLFS_HIDECURSOR is not set, the cursor
is shown only if a mouse device is present in the system.

This could later be enhanced further by showing and hiding the cursor
dynamically during runtime although that will not be of much use for
embedded platforms without libudev.

Change-Id: I7e4b85ea8807200871c88fc42b11ab2adac90d32
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
2013-10-11 11:58:59 +02:00
Kevin Ottens c657bb7b51 Make sure QLoggingCategory default is available
This avoids crashes in case where qWarning() would be called from a
global static deleted after the one holding the default category. I
encountered this case with a QLockFile locked from a global static while
the application quits, it was calling qAppName which was triggering a
qWarning as the qapplication object was gone too.

Change-Id: I8910e8559d063e8f0a737bae3da5edc481ab84d3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
2013-10-10 09:37:33 +02:00
Tor Arne Vestbø 5466eb289f Remove warnings about examples not running in the Qt Simulator
The Qt Simulator is no longer supported with Qt 5.

Change-Id: I0f98351d482dd0554ea0754746d56f94ee6bf22f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
2013-10-09 21:45:31 +02:00
Christian Strømme c5b2553fc2 Android: Add QAndroidJniXxx as friend classes in qjni.
The JNI classes in Qt Android Extras are changing name from QJNIXxx to
QAndroidJniXxx and they need to be friends of the private JNI classes
in core.

Change-Id: Ib5e1729f4bbba876b7d3eba5742fe750f95c48f7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2013-10-09 18:22:38 +02:00
Paul Olav Tvete 85fc94db1b Android: Fix backspace bug with 4.3 stock keyboard
The Android 4.3 keyboard will cause setComposingRegion() to be called when
backspacing over an existing word. If we don't implement that, the editor
will be out of sync with the input method.

Task-number: QTBUG-32955
Change-Id: I6c4ff786269a4e74c70a093c5f03c4c5a5727dd5
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
2013-10-09 15:38:24 +02:00
Eskil Abrahamsen Blomfeldt d4b30757ab Fix broken text layout with ShowLineAndParagraphSeparators
Before we add the current cluster we need to check if there's
space for it. Calling checkFullOtherwiseExtend() also has
the side effect of resetting the space data. We would add
the cluster without checking for space when showing separators,
causing broken behavior like we would count the space in the
current item as trailing space, which would make us chop the
end of the string.

Task-number: QTBUG-28832
Change-Id: I8169662218ff6e645575d4e89a57f6b234f3c4cb
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
2013-10-09 13:52:58 +02:00
Eskil Abrahamsen Blomfeldt 96a11284f2 Android: Fix black screen when changing orientation
When targeting API level 13 or higher, you need to explicitly
subscribe to configuration changes for screen size, otherwise
surfaceChanged() will not be called when you change the
orientation of the screen.

Task-number: QTBUG-33140
Change-Id: I48fd1d298c408802d1743736f62128cd0eec8983
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>
2013-10-09 13:52:58 +02:00
Laszlo Agocs 80cd06fd9d eglfs: Separate compositor and improve raster window support
Separating the compositor into a separate source file improves the
chances of possible future reuse and paves the way to supporting
multiple GL windows. Tooltips are now working too. Implemented a few
window functions like raise() and lower(). Fixed the qFatal for
multiple GL windows to be raised in non-SDK based Android builds too.

Change-Id: Id94d2fb2a4382766f3d130eebe1e6f397a535852
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
2013-10-09 13:52:58 +02:00
Friedemann Kleint c3a171e34e Suppress automatic positioning of popup windows.
This seems to cause issues with menus on certain Windows machines.

Task-number: QTBUG-33653

Change-Id: I8c31dd3ba5ccc6eb0551048401051d819f49a8c1
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
2013-10-09 13:52:58 +02:00
Thomas Hartmann 89f9bc9c5f Fix compilation for MSVC 2008 and std::tuple
For MSVC 2008 make_tuple is in the tr1 namespace.

Change-Id: I4a51f6cabdf068993869b404b12ed1484a21a9d4
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
2013-10-09 13:52:58 +02:00
Tor Arne Vestbø 2043adf97c iOS: Generalize jumping event-dispatcher to handle QEventLoop:exec()
We already supported re-entering QApplication::exec(), so adding support
for handling a generalized QEventLoop::exec() was nothing more than
removing the qApplication->in_exec condition in processEvents() and
the QThreadData::current()->quitNow condition when interrupting the
event loop. Everything else is just renaming and rewording, now that
the feature is not specific to QApplication::exec().

This means dialogs such as QFileDialog opened in the main() function
will show something on screen, as we then fall back to the iOS root
run-loop handling, while at the same time supporting QApplication
exec once the dialog closes.

We still don't hadle recursive QEventLoop:exec() at the root level,
as that would require multiple stacks and detailed application
knowledge about when to create them.

Change-Id: I334a362d85796341a343ce82f3104ff5866bdc3f
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
2013-10-09 11:50:53 +02:00
Tor Arne Vestbø 54c5a79fd0 iOS: Handle qApp re-exec after application termination from iOS' side
If the user for some reason spins a new QApplication event loop after
an initial one has been exited as a result of the application being
terminated by iOS we need to prevent further event loops from starting.

Change-Id: Ief8a69cebacebd5be63a1aca87a2a1babc809879
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
2013-10-09 11:50:43 +02:00
Tor Arne Vestbø dbecdb83dc iOS: Cleanup, remove unneeded Q_UNUSED
Change-Id: Ie7c03270279ee0b0b7daf7945b5eb6fd834c3404
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
2013-10-09 11:50:35 +02:00
Shawn Rutledge 51c28cad67 xcb: every window should have a title in debug mode
Qt creates various invisible windows for internal purposes.
Giving them all titles makes the output of tools like
xprop and xwininfo more readable, which makes solving certain bugs
(like transient-window bugs) easier.

Task-number: QTBUG-33644
Change-Id: I9d37b40d3339fb0f81ffeae64949b88ecb655474
Reviewed-by: Uli Schlachter <psychon@znc.in>
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
2013-10-09 08:19:26 +02:00
Andy Shaw f0b950144d Ensure lastPixel.y is also initalized to -1 when necessary
Task-number: QTBUG-31579

Change-Id: Ia4916ac0d384ea523bbfad0dafbc90044da7ec3e
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
2013-10-08 15:51:13 +02:00
Kai Koehne 5db49141a5 Fix "Empty or null file name(s)" warning text
Remove '(s)' for methods taking only one path argument. The '(s)' has
been dropped in other places already ...

Change-Id: I9dc0d1cfa1e02f60bce901a309835f4bbfadde6d
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
2013-10-08 09:18:24 +02:00
Lorn Potter ef7284a148 Update ofono backend
The dbus interface has since changed, and I missed this when I updated.

Change-Id: Iea3363b276a92f4a97d1ddfbae572515abac9417
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
2013-10-08 04:30:32 +02:00
Thiago Macieira 583d05863e Reorder the members in QThreadData to avoid padding holes
Before this change, this struct had size 104 and a total of 21 padding
bytes. Now it's down to 88 bytes and only 5 bytes of padding.

pahole report on a 64-bit system:
    class QAtomicInt          _ref;                  /*     0     4 */
    /* XXX 4 bytes hole, try to pack */
public:
    class QThread *            thread;               /*     8     8 */
    HANDLE                     threadId;             /*    16     8 */
    bool                       quitNow;              /*    24     1 */
    /* XXX 3 bytes hole, try to pack */
    int                        loopLevel;            /*    28     4 */
    class QAtomicPointer<QAbstractEventDispatcher> eventDispatcher; /*    32     8 */
    class QStack<QEventLoop*> eventLoops;            /*    40     8 */
    /* --- cacheline 1 boundary (64 bytes) --- */
    class QPostEventList      postEventList;         /*    48    32 */
    bool                       canWait;              /*    80     1 */
    /* XXX 7 bytes hole, try to pack */
    class QVector<void*>      tls;                   /*    88     8 */
    bool                       isAdopted;            /*    96     1 */
    /* size: 104, cachelines: 2, members: 11 */
    /* sum members: 90, holes: 3, sum holes: 14 */
    /* padding: 7 */

Change-Id: I1fc88e0b312f38eccdea440734fd37e0519285a2
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
2013-10-08 02:45:16 +02:00
Jerome Pasion 4533cc9944 Doc: Adding mark-up to boolean default values.
Default values should have mark-up to denote that they are code.
This commit changes:
-"property is true" to "property is \c true".
-"Returns true" to "Returns \c true".
-"property is false" to "property is \c false".
-"returns true" to "returns \c true".
-"returns false" to "returns \c false".

src/3rdparty and non-documentation instances were ignored.

Task-number: QTBUG-33360
Change-Id: Ie87eaa57af947caa1230602b61c5c46292a4cf4e
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
2013-10-08 00:46:27 +02:00
Sebastian Schuberth ac5f4a8e76 Allow to use short names for Windows Registry root keys
Change-Id: I58b7681bb49e93b7577bc559d754c81d3c6f007b
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
2013-10-07 19:09:37 +02:00
Laszlo Agocs cf092abdfc QPA: Fix event dispatcher dependent operations in platform integration
999e5162ec breaks QPlatformIntegration
implementations that perform tasks in their constructor that rely on
the event dispatcher. For example creating a QSocketNotifier is not
possible anymore since the event dispatcher is created later on.

This is fixed by introducing an additional virtual in
QPlatformIntegration that gets called after createEventDispatcher().

Two broken platform plugins have been identified so far: eglfs is
creating socket notifiers to read events from input devices and xcb's
input context plugins may use dbus. Both are updated accordingly.

Task-number: QTBUG-33768
Change-Id: I5badb623958a52ab5314ff93dd7d60061f5df70a
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
2013-10-07 19:09:37 +02:00
Kai Koehne 8a383c585f Require Windows Vista
The structure FDAP is only available as Windows Vista, and MinGW-w64
do not actually define it if _WIN32_WINNT isn't set.

Needed to fix compilation with latest MinGW-w64 headers (version 3).

Change-Id: I566ea6bd4c3d8d5a495b644aedffb7de42a6d6e4
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
2013-10-07 17:07:35 +02:00
Kai Koehne 409526b8a6 Fix typo in define guards
Needed to fix compilation with latest Mingw-w64 headers (version 3)

Change-Id: I70c7ff3d833e15e99a915a2df83f04d03a968300
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
2013-10-07 17:07:30 +02:00
Kai Koehne 55880e6c18 Remove default label for QtMsgType
Adding another category will most likely require a dedicated
handling anyway, so better let the compiler warn about it.

Change-Id: I323ca1250d82e33c086f1930e1df0a6337d6f16f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
2013-10-07 14:24:37 +02:00
Kai Koehne 4162522edd Improve QLoggingCategory documentation
Change-Id: I142e954cc3622643d80b8efd3b1d659c11d4e239
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
2013-10-07 14:24:32 +02:00
Andy Shaw b1bd4021f3 Fallback to the original application font handling
When Qt is built for 10.8 but then used on a machine before 10.8 then
it was not falling back correctly when an application font was added.

Change-Id: I0f05226cdbcfa36621bb1b3aa2f2cd60e714dfdf
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
2013-10-07 14:00:57 +02:00
Andy Shaw 2cfca47d56 Fix QScreen::grabWindow for multiple screens on Mac
QScreen::grabWindow() would only with the primary screen on Mac, if you
tried to grab a secondary one then it would end up with a blank pixmap.

Change-Id: I24f604051835db96286c693f5ed60a2633b6528e
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
2013-10-07 13:57:46 +02:00
Marc Mutz ae4c7be67d QCommandLineOption: declare as shared
QCommandLineOptions are held in a QList in QCommandLineParser,
so they better be declared movable, which is one of the things
Q_DECLARE_SHARED enables.

Change-Id: I75c8185534b4e9c1ea4417a9507095c8a6512aab
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
2013-10-07 01:08:09 +02:00
Ivan Romanov 6bbaeefb90 Fix typos of QWheelEvent example
Just fixed typos with event and numPixels.

Change-Id: I8191d7e812ae9d3975a142d198d709d4f9f85b7f
Reviewed-by: hjk <hjk121@nokiamail.com>
2013-10-07 01:08:09 +02:00
Stephen Kelly d5e62f8169 Output the CMAKE_CXX_LIBRARY_ARCHITECTURE when reporting missing dependencies.
Change-Id: I5d2d53b9899636dee9f30ab179727de82b78afd5
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
2013-10-06 23:13:55 +02:00
hjk 32f27b4367 Replace QLoggingCategory::isEnabled by non-template functions
This yields the same results as previously and is more in line
with existing interfaces.

Change-Id: I0bf0372bf18f3bfde579385cddbe594bf71e3c52
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
2013-10-06 19:47:31 +02:00
Sebastian Schuberth 09a11069e7 Improve the QWinSettingsPrivate constructor's performance
This is mainly achieved by modifying the program flow to require
fewer string comparisons and conversions.

Change-Id: I9887623b9c05fe76460fc725d6534d16bd9f9e59
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
2013-10-06 13:50:19 +02:00
Sze Howe Koh dc6852ca63 Doc: Expand on thread synchronization details
- Introduce the concept of "mutual exclusion"
- Rewrite/add explanations on how synchronization happens and how to
  use these tools
- Remove similar content from the "Thread Basics" page
- Fix links to examples

Change-Id: Id008a8fc3f68bf242cae1704c5c8318149d908b4
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
2013-10-06 01:08:58 +02:00
Sze Howe Koh 370b642092 Doc: Generalize problems and solutions of mutex use
These apply to other locks too, not just mutexes.

Move from "Thread Basics" to "Synchronizing Threads"

Change-Id: I6d7051cb225a8c836fb591a28b65d3de8fab4083
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
2013-10-06 01:08:36 +02:00
Sze Howe Koh 2524cafc8e Doc: Remove convoluted details of uncommon QMutex use case
Change-Id: If80068f44fef7ab0692b9dad99aa7e1a30cb72a6
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
2013-10-06 01:08:27 +02:00
Sze Howe Koh a15bc0e714 Doc: Show both low- and high-level thread syncing on the same page
Move text from "Thread Basics" to "Synchronizing Threads" for a more
complete overview.

Change-Id: Ib87259ed551fa77278b57c5922df7f4b774a829a
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
2013-10-06 01:08:11 +02:00
Sze Howe Koh 525712b75e Doc: Rewrite section on threaded event loops
- Focus on signals instead of events; programs rarely need to call
  QCoreApplication::postEvent() manually
- Mention QMetaMethod::invokeMethod()
- Reduce verbosity

Change-Id: I170b96bd0134c0bc102ef1a344d4f0b88e504f86
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
2013-10-06 01:08:01 +02:00
Sze Howe Koh 3b45dfe6e6 Doc: Discuss the concept of thread affinity in more detail
- Create a section dedicated to this concept, which is fundamental to
  signal/event handling
- Move relevant content from the very broad "Thread Basics" page to the
  QObject class ref
- Flesh out existing content, including distinguishing signals from
  events
- Address the common misconception that "member" = "child"; this has
  been encountered several times in the Qt Project forums

Change-Id: I5e7e6c848596e72c0bb623f8442c8389b81ad9ef
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
2013-10-06 01:07:52 +02:00
Frederik Gladhorn 4e337ee703 Add Q_DECL_OVERRIDE to accessibility classes
This actually shows two completely unused functions in QAccessibleTabBar
(fixed in follow up patch).

Change-Id: If6f464c022617b2ee1db654936e3ff9931103eb6
Reviewed-by: Jan Arve Sæther <jan-arve.saether@digia.com>
2013-10-05 12:19:02 +02:00
Marc Mutz 0206c1e4e7 QtConcurrent: remove a using declaration in a header file
See Sutter/Alexandrescu, Item 59, for rationale.

Change-Id: Ie689e2a00f9ed0fce1ccfdb77c943dd1b1beb4dc
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
2013-10-05 00:25:26 +02:00
Marc Mutz c012ee2940 QObject: use per-thread storage for qFlagLocation()
qFlagLocation() uses a global char* array to transport source location
information from the connect() side to the metaobject side. The size
of the array is 2 (two), which just about suffices for a single connect()
statement.

Obviously, if more than one thread makes a (_any_) connection at the same
time, the data is useless and, worse, there's a data race.

The non-reentrancy of qFlagLocations() cannot and need not be fixed,
but use a per-thread flagged_locations array in QThreadData so threads
don't disturb each other.

Task-number: QTBUG-3680

Change-Id: If1797c60751f551694def69afee6fbe295bbe2d2
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
2013-10-05 00:25:13 +02:00