INTEGRITY doesn't support self-extending stack. The default stack
size for a pthread on INTEGRITY is too small so we have to increase
the default size.
Change-Id: I0787d14938cf5e7e96c35df204212c8e83aa8893
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Nikola Velinov <nvelinov@ghs.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
qmutex.h is updated to let clangqdoc document the threads case,
because the no-threads case is not interesting, and clang can
handle everything declared in qmutex.h. This change required
that a few minor qdoc errors be corrected in qmutex.cpp as well.
Change-Id: Icb4122f2179d6aad39dc68376498364820143297
Reviewed-by: Martin Smith <martin.smith@qt.io>
Add parentheses after function names, replace
is different -> differs
Change-Id: I6332db1d1650ed8d8320c5f20cd79d0bf1870e27
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
By templating on the <chrono> types and unconditionally using
duration_cast to coerce the duration into a milliseconds, we
allowed code such as
mutex.try_lock_for(10us)
to compile, which is misleading, since it's actually a zero-
timeout try_lock().
Feedback from the std-discussions mailing list is that the
wait_for functions should wait for _at least_ the duration
given, because that is the natural direction of variance
(tasks becoming ready to run might not get a CPU immediately,
causing delays), while an interface that documents to wait
_no more_ than the given duration is promising something it
cannot fulfill.
Fix by converting the given duration to the smallest number
of milliseconds not less than the original duration. If that
is not representable in an int, use INT_MAX, emulating the
effect of a spurious wakeup, which are allowed to happen if
the function returns false in that case.
In the above example, the try_lock_for call is now equivalent
to
mutex.tryLock(1);
The tryLock() docs state that the actual waiting time does
not exceed the given milliseconds, but fixing that is a
separate issue.
Change-Id: Id4cbbea0ecc6fd2f94bb5aef28a1658be3728e52
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Introduce helper functions switch_{on,off,from_to} to make
the code more readable, and prepare everything for later
optimizations reducing the sizes of critical sections (by
locking the mutex later, or even never).
This commit, however, is only concerned with shutting up
tsan.
In waitForResult(), simplified the code by removing an
unneeded if guard: the condition is checked in the while
loop immediately following in the then-block, and the
local variable declaration that precedes the loop is not
worth guarding.
Change-Id: I24bfd864ca96f862302536ad8662065e6f366fa8
Reviewed-by: David Faure <david.faure@kdab.com>
Remove most type traits from qtypetraits.h, but keep the custom
implementation of is_signed/is_unsigned. This gets rid of
BSD-3 licensed code from Google in a public header (hugh!).
The custom implementations for is_signed/is_unsigned are kept
because the implementations in gcc's standard headers do not
work as we expect for enums - both is_signed and is_unsigned
always returns false there - see also
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59027
[ChangeLog][QtCore][General] Qt now relies on type traits from
the C++ standard library.
Change-Id: I3f2188b46949f04ca4482a6ac9afd3482103f0e1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This is an improvement for the following reasons:
- Should mutex locking allocate any kind of resource,
unlocking in reverse order will free those resources
in inverse order, which helps typical allocators.
- If the lock pair is contended, by unlocking in the
same order as locking, we were allowing the waiting
thread to wake up to take the first lock just to
find that the second lock is still held by someone
else.
The order of unlocking has no influence on the correct-
ness of the algorithm.
Change-Id: Id16b0342aef325c14a7bd8836d3a75db68ef2588
Reviewed-by: David Faure <david.faure@kdab.com>
Comparing pointers that do not point into the same array using
operator< is UB. You need to use std::less<>.
The QOrderedMutexLocker ctor already used std::less to compare
pointers, but the static relock() function was not fixed.
Amends 5007352164.
Change-Id: I584d382391dd5a2af75020a4e77f3e42ee5d5708
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Section 30.4.1.3 [thread.timedmutex.requirements] has 16 paragraphs and
2 subsections.
Change-Id: I9093948278414644a416fffd1473fec7fdd2716c
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
cf53aa21bf and 3aaa5d6b32
were reverted because of reconstruction in 5.7.
defineTest(qtConfTest_checkCompiler) in configure.pri is smart
enough to cover the case in a9474d1260.
DirectWrite: Fix advances being scaled to 0
Since 131eee5cd, the stretch of a font can be 0, meaning
"whatever the font provides". In combination with ec7fee96,
this would cause advances in the DirectWrite engine to be scaled to
0, causing the QRawFont test to fail.
Conflicts:
configure
mkspecs/features/uikit/device_destinations.sh
mkspecs/features/uikit/xcodebuild.mk
src/corelib/global/qglobal.cpp
src/corelib/global/qnamespace.qdoc
src/plugins/platforms/cocoa/qcocoamenuitem.h
src/plugins/platforms/windows/qwindowsservices.cpp
src/plugins/platformthemes/gtk3/qgtk3dialoghelpers.cpp
src/plugins/platforms/windows/qwindowsfontenginedirectwrite.cpp
src/widgets/kernel/qapplication.cpp
tests/auto/widgets/dialogs/qfiledialog/tst_qfiledialog.cpp
tests/auto/widgets/dialogs/qfiledialog2/tst_qfiledialog2.cpp
Change-Id: I4656d8133da7ee9fcc84ad3f1c7950f924432d1e
Since Qt 5.6.0, some applications such as Kate (built with clang, libc++
and libcxxrt) on FreeBSD occasionally crash with the following error
message on exit:
QMutex::lock(): sem_wait failure: Invalid argument
[or pthread_cond_wait in the 5.6 branch]
Investigation by Gleb Popov, Thiago Macieira and Olivier Goffart has
shown that this is caused by the fact that QDBusConnectionManager is a
Q_GLOBAL_STATIC (so it will be destroyed with all the other
Q_GLOBAL_STATICs in the reverse order of construction). In the
Q_COMPILER_THREADSAFE_STATICS case, freelist() also returns a
function-level static that is constructed on first use, so it may be
destroyed earlier than the QDBusConnectionManager object, making it
impossible to lock a contended mutex.
We now make freelist() return a global static, so that it is always
destroyed after QDBusConnectionManager and other function-static
variables.
Change-Id: I210fa7c18dbdf2345863da49141b9a85cffdef52
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
This fixes a problem that occurs when a task, that is run synchronously,
throws an exception. If that happened, then the exception would not be
re-thrown, because of an early return.
Task-number: QTBUG-54831
Change-Id: Ic70c5b810ec6adce6e62bfd6832ba9f170b13a7f
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@theqtcompany.com>
Fix the occurrences where the wrong classes are mentioned.
Change-Id: Ia291af77f0f454a39cab93e7376a110c19a07771
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
The compiler-generated ones are just fine.
This is BC because the class is not exported and
QFutureInterfaceBase (needlessly) contains virtual
functions (the dtor), so this class will never be
trivially copyable. It's also not movable, until I
figure out how to add move special member functions
to QFutureInterfaceBase.
Also made the QFutureInterface(State) constructor
explicit, because a State is not a faithful
representation of a QFutureInterface.
Change-Id: Ifa44f87b41c4ee3c5167c282512ec4860075671d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This makes the API more consistent with the STL, which helps discovering
the API. Much like QVector has push_back etc.
Change-Id: I75f6b77ab94233c15e17f66605f4bf13aa03e61c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Now QBasicMutex is Lockable and QMutex is TimedLockable, which means they can
be used in std::lock_guard, std::unique_lock, std::lock, etc.
[ChangeLog][QtCore][QMutex] QMutex now fully models the TimedLockable
concept by providing the try_lock, try_lock_for and try_lock_until
functions, therefore making it usable in Standard Library lock
management classes and functions.
Change-Id: I7c691481a5781a696701e1ab78186b5cefbd6a87
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Conflicts:
qmake/library/qmakebuiltins.cpp
qmake/library/qmakeevaluator.cpp
qmake/library/qmakeevaluator.h
qmake/project.h
QMakeEvaluator:
* evaluateConditional(): one side changed return type, the other
changed a parameter type.
* split_value_list(): one side changed a parameter adjacent to where ...
* expandVariableReferences(): ... the other killed one overload and
changed the survivor
src/corelib/io/qlockfile_unix.cpp
One side changed a #if condition, the other moved NETBSD's part of
what it controlled.
src/corelib/tools/qdatetime.cpp
One side fixed a reachable Q_UNREACHABLE in toMSecsSinceEpoch(), the
other moved it from the private class to the public one, in the midst
of the "short date-time" optimization, which confused diff entirely.
One side changed a QStringLiteral to QLatin1String, the other rewrote
adjoining code.
src/network/kernel/qauthenticator.cpp
Both rewrote a line, equivalently; kept the dev version.
src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
src/platformsupport/fontdatabases/mac/qfontengine_coretext_p.h
One side changed #if-ery that the other removed.
tools/configure/configureapp.cpp
One side added a check to -target parsing; the other killed -target.
tests/auto/testlib/selftests/expected_cmptest.lightxml
tests/auto/testlib/selftests/expected_cmptest.teamcity
tests/auto/testlib/selftests/expected_cmptest.txt
tests/auto/testlib/selftests/expected_cmptest.xml
tests/auto/testlib/selftests/expected_cmptest.xunitxml
Regenerated using generate_expected_output.py
I note that quite a few other expected_* come out changed, now.
There was no git-conflict in
src/widgets/kernel/qformlayout.cpp
but it didn't compile; one side removed some unused methods; the other
found uses for one of them. Put FixedColumnMatrix<>::removeRow(int)
back for its new user.
Change-Id: I8cc2a71add48c0a848e13cfc47b5a7754e8ca584
Align ourselves to what std::thread does (and what's sensible to do anyhow,
since we even document that "Deleting a running QThread [...] will probably
result in a program crash").
[ChangeLog][QtCore][QThread] Destroying a QThread which is still running will
now result in immediate and abnormal program termination.
Change-Id: Ib481287915be01a1381df14abf6e0fb68c36b5b5
Reviewed-by: David Faure <david.faure@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
When one tries to lock without a timeout, there is no need to allocate
a QReadWriteLockPrivate as we will not wait on it.
Change-Id: I37c96a7fbc0c66fbdffe372f6089708cb2466fe3
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The rule was:
- if the header included qglobal.h, turn that into qglobal_p.h
- otherwise, insert the #include after the "We mean it" warning
qglobal_p.h currently only includes qglobal.h.
Change-Id: Ib056b47dde3341ef9a52ffff13ef677e471674b7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
And blacklisted a few tests in tst_QUdpSocket.
Conflicts:
src/android/jar/src/org/qtproject/qt5/android/QtNative.java
src/corelib/global/qglobal.cpp
src/corelib/global/qsystemdetection.h
src/corelib/io/qfileselector.cpp
src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_egldevice/qeglfskmsegldeviceintegration.cpp
tests/auto/network/socket/qudpsocket/BLACKLIST
Task-number: QTBUG-54205
Change-Id: I11dd1c90186eb1b847d45be87a26041f61d89ef6
Push conversions from pthread_t to Qt::HANDLE and back into functions.
The casts that were being used didn't work for the unusual 64-bit
pointer/32-bit int combination that QNX is using for 7.0. HANDLE ends
up as a 64-bit pointer and pthread_t ends up as a 32-bit integer. g++
considers the precision loss when converting from the 64-bit pointer
to the 32-bit integer an error. Better to have the casts hidden in
functions so it's easier to adjust them for unusual combinations such
as this.
Change-Id: Ia156b26224a0f7edc1c31e3d1ee8b21191381698
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This commit also reverts fecaa6aae8.
The Microsoft documentation says _beginthreadex and _endthreadex are
used to initialize the C/C++ runtime and are necessary when linking to
libcmt(d).lib (that is, when using the -MT or -MTd options). For regular
builds linking against the .dll runtime, there should be no impact.
Inspection of the CRT source code which gets installed with Visual
Studio or Windows SDK proves that.
It's preferable to use CreateThread directly as _endthreadex will try to
call FreeLibraryAndExitThread, which can cause a deadlock if we try to
wait for the thread to exit from a global destructor.
For -MT builds, since there can be no DLLs, it's not a problem to
continue to use _beginthreadex and follow Microsoft's recommendation.
Task-number: QTBUG-53031
Change-Id: Id5480807d25e49e78b79ffff144af62c3c59dfe0
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
It was added in 2.6.22. If we pass it to 2.6.21, we'll get -ENOSYS,
which is bad for QMutex. This fix simply defines it to 0 if the header
doesn't define it.
But as a consequence: if Qt is built with newer kernel headers, it won't
run on older versions. It's not likely that someone is still using Qt
5.7 on a 2.6.21 kernel (v2.6.21.7 was released on 2007-08-04).
Change-Id: Icb178bb113bb437c9b67fffd1451dd7bb964f0c8
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
This reverts commit 4579d966af.
This causes a miscompilation with ICC 16 on Windows (MSVC 2015 ABI): the
vector created by new[] with () in:
mutexes(new QAtomicPointer<QMutex>[size]()), // (): zero-initialize
does not actually zero-initialize (see disassembly in the bug
report). This is definitely a compiler bug.
Since we plan on removing QMutexPool in Qt 5.8 anyway, let's just revert
the patch.
Task-number: QTBUG-53360
Change-Id: I06bae9392f534e45b3f1ffff144e823b747e7962
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
The flag was introduced in kernel 2.6.22, but we're already depending on
features added on 2.6.23 in qcore_unix_p.h (pipe2, dup3, O_CLOEXEC) and
2.6.27 in qnet_unix_p.h (accept4 and SOCK_CLOEXEC).
Change-Id: Id5480807d25e49e78b79ffff144a093c9e30cd96
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This is source- and binary-compatible, including the marking of the
existing function as noexcept.
[ChangeLog][QtCore][QMutex] Made the isRecursive() method be a const
function so that it can be called in const QMutex objects too.
Change-Id: Ifea6e497f11a461db432ffff1448bead97c08f92
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
We were using direct loading and operator=, which for everything except
std::atomic was very relaxed. But std::atomic<T *> defines the direct
access to actually be the least relaxed possible, under the idea that if
you didn't know any better to use a member function, you probably need
the most protection.
So use Ops::load and Ops::store.
Change-Id: Id5480807d25e49e78b79ffff144a06a2e6398576
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
It always returns the same information for each thread it is called
in. But since it's different per thread, we don't think it's
const. pthread_self() on Linux is marked const, though we think it
really ought to be pure. On other OSes, the annotation isn't present,
but the we can assume function is so.
Change-Id: Ifea6e497f11a461db432ffff1448c2b37d94d5f3
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
It was being stored once in QThreadPrivate and once in QThreadData, with
the latter being hidden as a Qt::HANDLE. Besides saving a little bit of
memory, this also solves a small data race condition that arises from
trying to connect a signal to an object moved to that thread and then
emit that signal shortly after the thread starts. Before this patch,
QThreadData::threadId was initialized only by QThreadPrivate::start(),
which meant that we were racing that initialization with this check in
QMetaObject::activate:
const bool receiverInSameThread = currentThreadId == receiver->d_func()->threadData->threadId;
Task-number: QTBUG-52337
Change-Id: Ifea6e497f11a461db432ffff1449ae01f1099aae
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@theqtcompany.com>
QAtomicPointer is CopyConstructible, but std::atomic<T*> is not,
for a reason. So avoid putting them in a QVarLengthArray, using
a dynamic heap allocation instead. This sounds wasteful until
you realize that virtually all users of QMutexPool (and we know
them all) use the global instance(), and that each QMutex (131,
by default) is heap-allocated, too.
Change-Id: Ie9c95671ec42a1f51919c18631b623aad2c0d6ba
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
For CoW types const methods will be called.
Mark store_persistent_indexes() as const,
because this method does not modify the object.
Change-Id: Ic867913b4fb5aaebfbaaffe1d3be45cf7b646403
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Update files using old header.LGPL3 to header.LGPL
Update files using old FDL template to use new one
Update files using old BSD template to use new one
Change-Id: I36a78272516f9953d02956522f285b40adfc8915
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
This change partially reverts 1bfc7f68 about QT_HAS_BUILTIN define
and undef in src/corelib/tools/qsimd_p.h.
This change is also squashed with "Fall back to c++11 standard
compiler flag for host builds" which is done by Peter Seiderer.
Conflicts:
mkspecs/features/default_post.prf
src/3rdparty/sqlite/0001-Fixing-the-SQLite3-build-for-WEC2013-again.patch
src/3rdparty/sqlite/sqlite3.c
src/corelib/tools/qsimd_p.h
src/gui/kernel/qevent.cpp
src/gui/kernel/qwindowsysteminterface.cpp
src/gui/kernel/qwindowsysteminterface_p.h
src/plugins/bearer/blackberry/blackberry.pro
src/plugins/platforms/cocoa/qcocoasystemsettings.mm
src/plugins/platformthemes/gtk2/gtk2.pro
src/plugins/styles/bb10style/bb10style.pro
src/sql/drivers/sqlite2/qsql_sqlite2.cpp
tools/configure/configureapp.cpp
Task-number: QTBUG-51644
Done-with: Peter Seiderer <ps.report@gmx.net>
Change-Id: I6100d6ace31b2e8d41a95f0b5d5ebf8f1fd88b44
QReadWriteLock is supposed to be a better alternative to QMutex when there
are only a few writers but potentially lots of reads. However, in practice
the previous implementation was much slower, unless you really do a lot of
work with the lock for read and you have lots of contention.
Indeed, the previous implementation was locking a QMutex both for lock, and
unlock (making it already at least twice as slow as QMutex).
This new implementation brings QReadWriteLock back to the same level as QMutex:
- No memory allocations in the uncontended case (almost no overhead allowing to
create many of them in classes)
- Lock-free if there is no contention
Should support up to 2^31 concurrent readers on 64 bit platforms, and 2^28
on 32 bit platforms
Change-Id: Ifa2fc999075cbb971088f4ee8e6fde78ce262da3
Reviewed-by: Edward Welbourne <edward.welbourne@theqtcompany.com>
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Robin Burchell <robin.burchell@viroteck.net>
Define WINVER, _WIN32_WINNT as 0x501 (Windows XP) in qt_windows.h.
Remove definitions of the same/lower versions and unneeded
definitions in other places. Remove definition for Borland compiler.
Task-number: QTBUG-51673
Change-Id: I2a344a7f7cf78b2afbf45dcdf8bf2a19b93f0a07
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
This reverts commit 40cbf1927b -
the qmake parser bug this worked around has been fixed.
As a side effect, the platform conditionals were simplified.
Change-Id: Ibfc1253e3c2252ab954c725a9effd6e719cb691c
Reviewed-by: Edward Welbourne <edward.welbourne@theqtcompany.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
Saves around 0.5KiB in text size on optimized GCC 5.3
Linux AMD 64 builds.
Change-Id: Iaf2664e670a96136031bac67e4012d4f7324eb47
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
This patch makes sure that all events posted using Qt on top of the
GLib event loop have the loopLevel counter incremented.
This is done since Qt depends on the fact that all deleteLater() calls
are issued within the scope of some signal handler (in other words,
triggered by the chain sendEvent() -> notifyInternal2()).
There is a side effect though: in the conditions affected by this
patch, that is deleteLater()s issued within a glib event handler for
example, manually calling processEvents() or sendPostedEvents() with
or without the QEvent::DeferredDelete flag has the same effect, and
deferred deleted events are always processed.
While this is not a currently working feature which the patch breaks,
this side effect seems to be difficult to avoid without separating
sendPostedEvents() and processEvents() into a public and a private
method, in order to detect when they are manually called.
Such change could perhaps be done for Qt6.
An autotest for QTBUG-36434 is also included.
Autotesting for QTBUG-32859 seems to be more challenging in this
respect, due to its dependency on GLib.
Task-number: QTBUG-18434
Task-number: QTBUG-32859
Task-number: QTBUG-36434
Change-Id: Ib89175aa27c9e38bca68ae254d182b2cd21cf7e9
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
I wrote a script to help find the files, but I reviewed the
contributions manually to be sure I wasn't claiming copyright for search
& replace, adding Q_DECL_NOTHROW or adding "We mean it" headers.
Change-Id: I7a9e11d7b64a4cc78e24ffff142b506368fc8842
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Not that we require it, but since The Qt Company did it for all files
they have copyright, even if they haven't touched the file in years
(especially not in 2016), I'm doing the same.
Change-Id: I7a9e11d7b64a4cc78e24ffff142b4c9d53039846
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
[ChangeLog][Important Behavior Changes] Starting with Qt 5.7, Qt
requires a C++11 compiler with support for C++11 atomics. This affects
user code too: Qt headers no longer compile with a C++98 compiler. The
minimum compiler versions for this release are:
* Clang 3.4 (found in XCode 5.1)
* GCC 4.7
* Microsoft Visual Studio 2012
Change-Id: Ib056b47dde3341ef9a52ffff13ef1f496ea9363f
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Dmitry Shachnev <mitya57@gmail.com>
These variables are accessed from both the executing
thread as well as the thread waiting for results.
Note for some variables which threads access them.
Change-Id: I1c84ddff92585abb32341c42072106066e485f7e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
operator< between pointers is undefined unless the two pointers
point in the same array, which is not what QOrderedMutexLocker does.
Change-Id: Ia6594900cfa807a73f20e157ce896b4321a3d746
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
From Qt 5.7 -> LGPL v2.1 isn't an option anymore, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/
Updated license headers to use new LGPL header instead of LGPL21 one
(in those files which will be under LGPL v3)
Change-Id: I046ec3e47b1876cd7b4b0353a576b352e3a946d9
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
According to MSDN Tls* is inline replaced by Fls* on Windows (Phone) 8.1
and beyond.
However, this does not seem to be the case for Windows 10. An
application links against Tls* and the certification step fails due to
using non-allowed APIs.
Hence we do the inline replacement manually. QThreadStorage and QThread
tests continue to work, so it seems to be an oversight by Microsoft.
Task-number: QTBUG-50292
Change-Id: Ice1b6e54fcee238c94af5c6fb1753d903db7476d
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>
Qt3D is making heavy use of this, causing the QList node allocations
to be among the top 10 per frame allocation sources. Switching to
QVector fixes that.
Change-Id: I3b4df329710f82bf8d6797ea1f0c79b288a08063
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Saves just shy of 4KiB in text size on optimized GCC 4.9 Linux
AMD64 builds, iow: ~0.07% of the total QtCore library size.
Change-Id: I87fdcc8ee25c6bb5dabddb9a694ab4496b1538fa
Reviewed-by: David Faure <david.faure@kdab.com>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
It makes tst_QMutex::contendedQMutex with no msleep 8 times faster
Change-Id: Ic300e7618b4467e4e08b30f0213bd23c06d4d90a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The platform is no longer supported or actively maintained, and is
in the way for improvements to the Unix event dispatcher and QProcess
implementations.
Change-Id: I3935488ca12e2139ea5f46068d7665a453e20526
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Opt-in by setting
QT_EVENT_DISPATCHER_CORE_FOUNDATION=1
This will make QCoreApplication and QThread create
a QEventDispatcherCoreFoundation instead of a
QEventDispatcherUNIX.
With this change we can now support calling native API
that requires a running Core Foundation event loop
on the QCoreApplication main thread and secondary
threads. Previously this was only supported on the
QGuiApplication main thread.
Rewrite the #ifdef event dispatcher logic slightly:
both OSX and GLIB now gets an "else" branch for the
UNIX event dispatcher, instead of the current "dangling
else" pattern which only works for one #ifdef case.
Change-Id: If853567fa097fe007502b0804c2307a989719866
Task-number: QTBUG-46625
Task-number: QTBUG-48758
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The "previous" value is always 1 when the compare-and-swap succeeded,
instead of the previous value.
Instead of fixing this, let's just remove this file a bit earlier than
the rest. All of them will be removed in Qt 5.7 anyway, so let's leave
MIPS atomics to the compiler.
Task-number: QTBUG-49168
Change-Id: Idba8c29717f34c70a58fffff14133304595165f5
Reviewed-by: Dmitry Shachnev <mitya57@gmail.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lisandro Damián Nicanor Pérez Meyer <perezmeyer@gmail.com>
There was another function between the comment and the one it documented.
Change-Id: I4e96979261738b1ef264984da0d6a8245f2fb643
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@theqtcompany.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
It's accessed by QFutureWatcherBase::isFinished(), potentially before
anything has set it. It gets to be initially true until setFuture()
has given it us unfinished future and set it false.
Add a regression test for matching state in future and watcher.
Task-number: QTBUG-12358
Change-Id: Iae7bdaa434ab80f518afe4d7d55df99c391991a4
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@theqtcompany.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@theqtcompany.com>
This memory allocation was introduced in
314c83c0c2. With a compiler without thread
safe statics support mutex.cpp use a function named freelist() to create
the global QFreeList object. it will be created when the first time it was
accessed, but will never be released. This patch use Q_DESTRUCTOR_FUNCTION
to delete this object.
Task-number: QTBUG-48359
Change-Id: I4e4716930930aa98630101a1f96de6a7672af9cb
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* theMainThread is written by the main thread and read by
QThreadData::~QThreadData() (any managed thread)
* QThreadData::thread is written by QThread::~QThread (in the parent thread)
and read+written by QThreadData::~QThreadData (in the managed thread).
This can happen because QThreadData is refcounted so the managed
thread (which derefs it) races with the parent thread (which sets it to 0).
Change-Id: I72de793716391a0937254cda6b4328fcad5060c7
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
The dependent macro Q_OS_WINRT is not yet in scope when PCH is disabled,
and it was missing parentheses anyway. Use WINAPI_FAMILY here instead, as
it's just as good.
Change-Id: Ib33904a9173f4f262c57ba1c27b37019f12827e7
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>
thread\qthread_win.cpp(121): warning C4312: 'reinterpret_cast': conversion from 'DWORD' to 'Qt::HANDLE' of greater size
thread\qthread_win.cpp(343): warning C4312: 'reinterpret_cast': conversion from 'DWORD' to 'Qt::HANDLE' of greater size
thread\qthread_win.cpp(416): warning C4312: 'reinterpret_cast': conversion from 'DWORD' to 'Qt::HANDLE' of greater size
Change-Id: I5e60e4bb91a32491562748755d34a2c5a1e264b4
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
Since Q_GLOBAL_STATIC might use QMutex and cause a stack overflow.
Task-number: QTBUG-47554
Change-Id: I4853c5e9b9168d4a417200e2a45a1bf9cb103a30
Reviewed-by: David Faure <david.faure@kdab.com>
Reviewed-by: Pierre Rossi <pierre.rossi@theqtcompany.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Normally qmake catches the #include and drops the source from SOURCES.
But the parser has bugs, so help it by never adding the files.
The false: SOURCES += is left so that the sources can be found by Qt
Creator.
Task-number: QTBUG-46582
Change-Id: I049a653beeb5454c9539ffff13e667877350346b
Reviewed-by: Jake Petroules <jake.petroules@petroules.com>
This reverts commit 666486b3ef, which
removed the QHash that protected against reader recursion
deadlocks. Without this hash, a reader will block on
d->readerWait.wait() until the writer finishes its task. However, the
writer never starts because there's a reader that hasn't released the
lock. That's a deadlock.
Change-Id: I792373bb361db35eb9e5504229c099008821a665
Task-number: QTBUG-47530
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Long-lived threads started by Qt itself can now receive events even if
QCoreApplication hasn't been created. This is required in all threads we
start that will handle events, unless we're sure that the thread will
exit before the global application object begins destruction.
Otherwise, those threads will have race conditions dealing with the
event delivery system trying to call the QCoreApplication::notify()
virtual while the object is being destroyed.
Change-Id: I27eaacb532114dd188c4ffff13d4ad2a4bb443e6
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Make sure that the QString is not in scope anymore when the pthread
cleanup happens. C++ destructors in scope are pthread cleanup handlers.
Change-Id: I9a75ad8521ae4e5cbbe5ffff13d1ae1c7e31f6bb
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
The latest version of Haiku provides the implementation
for pthread_condattr_setclock, so we can enable the code
in QWaitCondition again to make it use the monotonic clock
correctly.
Change-Id: Ibb9ad33d873c3b34f2c516087c4e0aeac04cc83f
Reviewed-by: Augustin Cavalier <waddlesplash@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This is in preparation of adding -Wzero-as-null-pointer-constant (or similar)
to the headers check.
Task-number: QTBUG-45291
Change-Id: I0cc388ef9faf45cbcf425ad0dc77db3060c104a8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Since of Windows (Phone) 8.1 most of the desktop's thread functionality
is also available, so we might be able to share the code and get rid of
the extra implementation for WinRT.
Task-number: QTBUG-43837
Change-Id: I0ce907cd94899834527f88c70e1e395bafdb14b3
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@theqtcompany.com>
Some broken compilers (known broken: GCC 4.7; known good: GCC 4.9)
don't understand that destructors are implicitly noexcept and
complain about a weaker exception specification on ~QException
than on ~std::exception.
Change-Id: I433475fcf345d7da55e8da667cf9821ee09c0d8a
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Not only should using the "Ex"-versions be the rule and not the
exception on Windows, but it's only the only way to share as much
code as possible between Desktop Windows and WinRT (which is pushed
by Microsoft a lot). The current rule of Desktop and WinCE vs WinRT
does not make a lot of sense any longer, as WinCE is getting less
and less important. By moving these #ifdefs in favor of WinRT,
WinCe code might be removed easier in the future.
Change-Id: I0ef94fb14fbf8add9c2dfa2a3fb8036d25fb697d
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Commit 2fa7b3b317 broke the build, the compiler
(gcc 4.4) doesn't like the mismatch between constructor declaration and
definition.
Change-Id: Ied1f3293c21871276ce8d2db3d2e6c06c75ade90
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
...but only for Qt 6. It's a source-incompatible change,
e.g. in a user hierarchy of clone()able runnables.
Change-Id: I8610308dea46da19bda5c96985d35f31c43484be
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
De-duplicates vtables and enables RTTI on this hierarchy.
This is esp. important for exception classes, as RTTI is used
to select the catch clause to handle the exception in-flight.
The issue is made a bit complicated by the fact that the
exception specification changed from C++98 to 11 and that C++98
clients require the empty throw() specification while we don't
want to introduce warnings for C++11 users.
Let's hope no compiler includes throw specs into the mangled
names.
Task-number: QTBUG-45582
Change-Id: If086c8c38fccdc2c9c7e2aa7a492192cc1f86a6c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
To avoid source-incompatibilites, wrap in QT_DEPRECATED_SINCE(5, 5)
in public headers.
Change-Id: I6117e8a6b11200d2f1a0a94a0e87d5c27538218e
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Signals marked with QPrivateSignal had the QPrivateSignal marker
ifdefed out for qdoc. This is no longer necessary, so the #ifdefs
are removed.
Change-Id: Idb334ed311c6ed6883d7b7b5a3fcdede60c4a1f8
Task-number: QTBUG-45535
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>
The implementation used an expensive QHash to keep track of reading threads,
for seemingly no good reason.
Change-Id: Iffa5b18d80f56b8ff22d39aa6bc3d52c2e3ed0ef
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Use the name "OS X" instead of "Mac OS X", "Mac OS" and "OSX",
and mention iOS. Replace "Carbon Preferences API" by
"CFPreferences API" in the QSettings documentation.
Change-Id: Ia7f9fb874276c7c445a1649df521b96ff43daa0c
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Venugopal Shivashankar <venugopal.shivashankar@digia.com>
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>
This function used to reside in QEventLoop in Qt 3 and was deprecated in
Qt 4. However this is useful for those who want to know how many event
loops are running within the thread so we just make it possible to get at
the already available variable.
Change-Id: Ia6a7d94ff443a1d1577633363694bc2fa8eca7e4
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Jørgen Lind <jorgen.lind@theqtcompany.com>
And add tests for the GCC intrinsics and for std::atomic.
Task-number: QTBUG-43794
Change-Id: Ic5d393bfd36e48a193fcffff13b9b2dbaee80469
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
wait() was always returning immediately, regardless of the timeout
value, due to a timespec comparison from different clock types.
On Android 5.0, qt_gettime() uses the monotonic clock but the wait
condition was using the real time clock.
__pthread_cond_timedwait_relative() is not exported anymore in
Android 5.0, we therefore fall back to pthread_cond_timedwait().
Since the monotonic clock is now available, qt_gettime returns
a time based on it. The wait condition consequently needs
to use the monotonic clock.
Change-Id: Ie7cf909b81107edd7207c3c039b3ec1f5422303f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>
This is a no-op change. It doesn't improve or worsen the code at all.
Change-Id: Ifd5273842370ca9bce0ed74f2f2d54d453797948
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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>
This is useless. The C++ language does require callbacks passed to C
functions to also be extern "C". That's what this macro was doing.
But #ifdef'ing for the macro only made the code uglier. Just let the
extern "C" be there for all compilers.
PS: C++ classes can't be extern "C"...
Change-Id: Ic5d393bfd36e48a193fcffff13b9c9b3923443dd
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
This is primarily to get a cleaner build of src/tools
under -Wnoexcept.
Change-Id: I0dea21e70aad56b25675fc59fac0327b55ee83e3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The "int" was a left over when this was documentation for QAtomicInt.
Change-Id: If7b7688982d27cbbd42f080eff7d08344b587f44
Reviewed-by: Richard J. Moore <rich@kde.org>
[ChangeLog][QtCore][QThreadPool] Added QThreadPool::cancel() which allows
removing from the job queue a job that hasn't been started yet.
Change-Id: Ib8f1c1f32a34f5eec8338c641d820b928e470164
Reviewed-by: Nick Shaforostoff <shafff@ukr.net>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
The BSD4 code (including OS X) calls sysctl and if that fails, it sets
cores to -1. Similarly, the generic Unix code calls sysconf() and
assigns the returned value to cores, but sysconf can return -1 on
failure.
Change-Id: I9e521d366e9c42f36c2ba20a37e7a74539ddb8f4
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Change-Id: I91ff06644e8047c2ca483f9768b46c1372eb6171
Reviewed-by: Martin Smith <martin.smith@digia.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@theqtcompany.com>
Done automatically with clang-modernize on linux
(But does not add Q_DECL_OVERRIDE to the function that are marked
as inline because it a compilation error with MSVC2010)
Change-Id: I2196ee26e3e6fe20816834ecea5ea389eeab3171
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
We map the Apple Clang versions to upstream, so that we have one
define to compare against.
Fixes build break on iOS due to qbasicatomic.h not defining
QT_BASIC_ATOMIC_HAS_CONSTRUCTORS on Apple Clang versions, which
is needed after 1e9db9f5e1
Change-Id: I17493c0187c20abc5d22e71944d62bfd16afbad2
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
qatomic_sparc.h was removed previously as part of general cleanup of
old atomic code for Qt 5.3. Unfortunately SPARC include reference was
not removed resulting in build failure on that platform.
Task-number: QTBUG-41384
Change-Id: Ic6e31b32324b0e5dd3700a6a21515a8eea5668bd
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Background:
It is often necessary/advisable to schedule tasks on thread pools !=
globalInstance(). As Herb Sutter writes in
http://www.drdobbs.com/parallel/use-thread-pools-correctly-keep-tasks-sh/216500409
and the Qt Training Material stresses, tasks you schedule on a (global)
thread pool should be non-blocking, which currently rules out using any of
the QtConcurrent functions for, say, file I/O.
Nonetheless it's often convenient to have thread pools also for file I/O, as
the thumbnail viewer exercise in the Qt Training Material shows. In this
case, you'd use a dedicated thead pool, leaving the global thread pool for
CPU-bound tasks.
Yet, none of the QtConcurrent functions allow to pick the QThreadPool
instance on which to schedule the work created with them.
This patch prepares for them to do so.
This is the first part of the forward-port of
https://qt.gitorious.org/qt/qt/merge_requests/1281.
Implement by using a new QThreadPool* member that defaults to nullptr,
and adding setThreadPool to set this member, then using it in lieu of
QThreadPool::globalInstance() everywhere.
I chose to leave m_pool == nullptr to mean globalInstance() to avoid
creating the global instance whenever a QFuture is created, even if the
future represents the result of a calculation not run on the global thread
pool.
[ChangeLog][QtCore][QFuture] Can now be used with any QThreadPool, not
just globalInstance().
Task-number: QTBUG-17220
Change-Id: I4e1dc18d55cf60141b2fa3d14e2d44a3e9e74858
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Saves us from an extra load in the loop when the result is already
there.
Change-Id: Ib65b5b13f27975b8fc88be9b888c19505bf5e07c
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
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 9ce697f2d5
Thanks goes to Sergio for the qnx mkspecs adjustments.
Change-Id: I53b1fd6bc5bc884e5ee2c2b84975f58171a1cb8e
Don't create a dispatcher for all adopted threads, only the main thread.
This was causing the GUI thread to skip platform dispatcher creation.
Change-Id: Id0de976f9def48e8d58efd20815b6fd18faebefa
Reviewed-by: Andrew Knight <andrew.knight@digia.com>
qdoc only see a fake QMutex class (the same as the one built in bootstrap)
But that fake QMutex had static member while the normal QMutex class
has non static member.
QMutexLocker::mutex is also a const function in the real QMutexLocker
Task-number: QTBUG-38522
Change-Id: I220434ffc6a9e990029f770e2536ecb55b4e2182
Reviewed-by: Martin Smith <martin.smith@digia.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Instead of using std::thread, use the WinRT ThreadPool to manage
threads. This allows for setting the scheduling priority, and provides
a path to enable XAML integration (which requires Qt run on a background
thread).
QThread::terminate() is still unsupported, and only the winmain thread
can be adopted due to the behavior of the thread pool when creating
tasks from the GUI thread. The associated tests are now skipped, and
all other QThread tests pass.
Task-number: QTBUG-31397
Change-Id: Ib512a328412e1dffecdc836bc39de3ccd37afa13
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
There is no guarantee that the handle from std::thread will be valid
when a wait is made. Instead, simply use an elapsed timer and check
if the thread is finished. This prevents an exception from being thrown
when a bad handle is encountered.
Task-number: QTBUG-31397
Change-Id: Ie2a7e6cbfbb27bf1baff779322670d85e92e10dd
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
This allows us to get the current value of the QMutex / QBasicMutex
after the testAndSet operation failed. It saves an extra load from
memory.
Change-Id: I4922a8b3df15e342b177b13f56cf4f1184314520
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
sleep_for appears to be unreliable (resulting in infinite waits) when
used in a thread which is also using native waiting methods. This is
also a step in the direction of eliminating std::thread's usage in WinRT.
Change-Id: I58bc4bf9ada25de247849333ef925964676b7239
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
Instead of looping unnecessarily on top of testAndSet.
Task-number: QTBUG-37031
Change-Id: I8120f8405eb76dccc9066749cee0a92b0f2da20e
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Sergio Ahumada <sahumada@blackberry.com>
[ChangeLog][QtCore][Atomic support]Added more operations to the atomic
classes, including operator T(), operator=(T), operator++,
operator--. For the QAtomicInteger, bit-manipulation operations are
also provided, both in operator and in fetchAndXxxYyyyyy modes.
Change-Id: I39c07be74e15e0a48f9e931f4342b182004dee1a
Reviewed-by: David Faure <david.faure@kdab.com>
This is extremely useful, since the most common action after a failed
compare-and-swap is to loop around, trying again with the current
value as found in memory.
Code currently written as:
do {
Type value = atomic.load();
...
} while (!atomic.testAndSetRelaxed(value, desired));
Becomes:
Type value = atomic.load();
do {
...
} while (!atomic.testAndSetRelaxed(value, desired, value));
In most CPU architectures, the value that was found in memory is known
to the compare-and-swap code, so this is more efficient than the
previous code. In architectures where the value is not known, the new
code is no worse than before.
The implementation sometimes modified an existing function, sometimes
it added a new one, depending on whether more registers were needed in
the assembly (like ARMv6-7), the code became more complex (ARMv5), the
optimizer failed (C++11), or it was just plain equivalent (MIPS).
Change-Id: I7d6d200ea9746ec8978a0c1e1969dbc3580b9285
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Don't delete the thread object without detaching it, use detach()
instead of CloseHandle(), and avoid a double-delete.
Change-Id: Ia169a96fb32805e06abe099c3c35e97ce485f088
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
This simplifies the code a lot and avoids silly mistakes where a
specific integer type is missing (such as char16_t).
Change-Id: Id91dfd1919e783e0a9af7bfa093ca560a01b22d1
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
No need to redefine everywhere, since they're required to be supported.
Change-Id: I2bdbbd0b0c44871e3bd0edcf0289fc58dd50ff31
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
This is already implemented in qatomic_x86.h, qatomic_ia64.h,
qatomic_mips.h, qatomic_armv6.h, and qatomic_cxx11.h. For
qatomic_msvc.h, we've just fixed it.
For qatomic_gcc.h, we know that the compiler supports it, so just add
it. According to the GCC manual, it might print a warning on some
platforms, so we only enable that on 64-bit builds.
For qatomic_unix.h, the support was missing (along with support for
unsigned 32-bit), so this commits adds it.
For qatomic_armv5.h, the platform does not always support 64-bit
atomics, but ARMv5 cannot compile in 64-bit mode anyway.
Change-Id: Ia8b3b5c641f11e5df05937fe7442be0a223174ef
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
QAtomicInteger<T> is to QBasicAtomicInteger<T> what QAtomicInt was to
QBasicAtomicInt: just a little more syntactic sugar. The Basic classes
do not always have a constructor, since they depend on compiler
support. The constructor is always present in the non-Basic class, at
the expense of making it non-POD for C++98 code.
This commit also repurposes most of QAtomicInt's documentation for
QAtomicInteger. It adds only the Q_ATOMIC_INTnn_IS_SUPPORTED macro
that explains whether the given type is supported on this platform.
Change-Id: I58886d6fa49fea4de24015c40dae29c9fa534e00
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Kurt Pattyn <pattyn.kurt@gmail.com>
When building with debug, all SLOT or SIGNAL macros will
expand to a function call, and then function will call
QThreadData::current(), which will set
QCoreApplication::theMainThread if it has not already been
done. Since Qt Widgets has these macros in the static
initialization of the library, we would register the
Android main thread as the main thread of Qt, which would
mean that the actual application object was created on
a different thread than the main thread. This caused warnings
to appear, and also triggered a race condition which
caused widget applications to sometimes show a black screen
instead of content on startup when run with the OpenGL plugin.
Task-number: QTBUG-35048
Change-Id: Ie8979f5e7cd5662f8d7dd276de9f94f27cc120b5
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
the diff -w for this commit is empty.
Started-by: Thiago Macieira <thiago.macieira@intel.com>
Change-Id: I77bb84e71c63ce75e0709e5b94bee18e3ce6ab9e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
- Move private classes in the .cpp file (they aren't needed outside)
- Conform to Qt style, such as includes and braces
- Use ComPtr where appropriate
- Use foreach where appropriate
- Remove non-functional wake/interrupt leftovers
- Remove redundant timer list
- Make the timer callback a static method, so it won't crash if it
gets called on shutdown
Task-number: QTBUG-35945
Change-Id: I5426fba2735e908a04ea60287f9936f5abde6644
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
The new atomic code was introduced in Qt 5.0. The platforms that did not
get ported were announced as deprecated in Qt 5.2. The code is now
removed in Qt 5.3.
The status for the platform/compiler/OS combinations affected is:
* Linux with GCC or Clang: still compiles on all platforms
(via qatomic_cxx11.h or qatomic_gcc.h)
* INTEGRITY with Green Hills compiler: no longer compiles
* Solaris on UltraSPARC, with Sun Studio: no longer compiles
* AIX on POWER5 or 6, with IBM Visual Age: no longer compiles
(probably did not compile Qt 5.0 either)
* VxWorks in kernel mode: no longer compiles
[ChangeLog][General] Support for the following platforms has been
removed, due to lack of interest in updating support: INTEGRITY,
VxWorks, Solaris on UltraSPARC (with the Sun Studio compiler suite), AIX
on POWER processors (with IBM Visual Age compiler suite).
Change-Id: I8a961385fd95011c016b2b1eec52034794dae3e1
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Before, we'd get just an error message that the size of the array was
negative. Now, for C++11 compilers, we get a better error message:
qbasicatomic.h:117:5: error: static assertion failed: Template parameter is not a supported integer on this platform
qbasicatomic.h:119:24: error: invalid use of incomplete type ‘struct QAtomicOps<long long unsigned int>’
Change-Id: I6b0792254c0dc6103a4a7608f2942d59cda07c00
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
The T was missing in QT_BASIC_ATOMIC_HAS_CONSTRUCTORS. This makes
QAtomicInt's constructor become constexpr.
Change-Id: Ibe58ff36517c5d05ce8af9c0f28169fa63521632
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
For the conflicts in msvc_nmake.cpp the ifdefs are extended since we
need to support windows phone in the target branch while it is not there
in the current stable branch (as of Qt 5.2).
Conflicts:
configure
qmake/generators/win32/msvc_nmake.cpp
src/3rdparty/angle/src/libEGL/Surface.cpp
src/angle/src/common/common.pri
src/corelib/global/qglobal.h
src/corelib/io/qstandardpaths.cpp
src/plugins/platforms/qnx/qqnxintegration.cpp
src/plugins/platforms/qnx/qqnxscreeneventhandler.h
src/plugins/platforms/xcb/qglxintegration.h
src/widgets/kernel/win.pri
tests/auto/corelib/thread/qreadwritelock/tst_qreadwritelock.cpp
tests/auto/corelib/tools/qdatetime/tst_qdatetime.cpp
tests/auto/gui/text/qtextdocument/tst_qtextdocument.cpp
tools/configure/configureapp.cpp
Change-Id: I00b579eefebaf61d26ab9b00046d2b5bd5958812
The public documentation for load() and store() says it's atomic,
and it is:
* using _q_value.store(newValue, std::memory_order_relaxed) in the C++11
implementation
* using a simple assignment otherwise, which is atomic (and relaxed, no
memory barriers) on all the existing C++ ABIs.
Change-Id: I40faa47120163225bd11c3a32514ac97ef8bbbd4
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The current synchronization mechanism was racy: decrementing waitingThreads
and then hoping that the wakeOne will wake a thread before its expiry
timeout happens. In other words, on timeout, a just-assigned task would
never run. And then no other task would run, if maxThreadCount is reached.
Fixed by using a queue of waiting threads (rather than just a count), and by
moving the wait condition into the thread itself, so we know precisely
which one we're waking up, and we can remove it from the set of waiting threads
before waking it up, and therefore it can determine on wakeup whether it
has work to do (caller removed it from the queue) or it expired (it's still
in the queue). This is reliable, whereas the return value from QWaitCondition::wait
isn't reliable, when the main thread has already decided that this thread
has work to do.
Task-number: QTBUG-3786
Change-Id: I1eac5d6c309daed7f483ac7a8074297bfda6ee32
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Added/Changed:
- Move content from the Thread Basics overview to the QThread class ref
- Rephrase bits for clarity
- Use more links
Removed:
- (threads-basics.qdoc) Warning against moveToThread(this): This usage
came about when people tried to add slots to a QThread subclass. This
patch adds a warning against the root cause.
- (threads-basics.qdoc) Note on sleep() et al.: They were made public in
Qt 5.0.
- (threads-basics.qdoc) The strategy for managing member variables:
Sounds error-prone. Pushing results through signals is safer.
- (qthread.cpp) The note about GUI classes: Irrelevant to QThread,
and it's already mentioned elsewhere.
Change-Id: I6bc53cc22b929523f9976d2b920f94c02bd7273e
Reviewed-by: Geir Vattekar <geir.vattekar@digia.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
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>
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>
Rationale: a wait on a condition-variable is usually a cancellation point.
On Posix, and probably in C++ at some point, a thread cancellation is
done by (a kind of) exception unwinding the stack. To ensure that
we call reserveThread() in all cases, wrap the function pair in a RAII
class. Even if we currently don't seem to support exceptions in QtCore,
this is low-hanging fruit, and no worse than what we had before.
Change-Id: Ifb0f428ea50f9ac12be14e620615f46e00d3dd91
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
The read from 'owner' for comparison with 'self' in QRecursiveMutexPrivate::lock()
is not synchronized with the write to 'owner' in the same function further down,
and neither operation is atomic.
Fix by making 'owner' an atomic pointer.
Change-Id: I186b88575589da0dce5827a1e17ceb4ce599ed02
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
- The "Concurrent Programming" page is an exact duplicate of the Qt Concurrent module landing
page.
- The "qtconcurrent intro" target is not referenced anywhere.
Change-Id: Ice9b4360783013fe972258ca54a0004be43b8766
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
To ease interruption of long running tasks, a new method
QThread::setInterruptionRequested() can be called.
The task can check QThread::isInterruptionRequested()
and act upon it by stopping itself.
These methods are designed to replace the use of a global variable
and other hacky ways to stop a task running in another thread.
Change-Id: I17622dd60d2262078210e7e4294ad6c53a6dc179
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Makes it possible for QElapsedTimer to be non-POD.
Change-Id: I5ffc59c7a93c187a4a814e6959f8383fa8d4cc44
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
QTBUG-21051 has a testcase where activeThreadCount() could actually
end up at -1 (converted to an autotest in this commit).
The reason was: start() calls tryStart() which returns false due to
too many active threads (reserveThread() causes this), so it calls
enqueueTask() - which actually wakes up the waiting thread, but
it didn't decrement the number of waiting threads.
Note that tryStart() is "if I can grab a waiting thread, enqueue task and wake it"
while start(), in case tryStart() fails, wants to "enqueue, and then if I can grab
a waiting thread, wake it". This is why enqueue shouldn't wake; waking must happen
only if we can grab a thread (d->waitingThreads > 0).
Task-number: QTBUG-21051
Change-Id: I3d98337103031c9bdf0bf365295f245be0c66aa7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Rather than trying to make it lock-free (which requires double-bookkeeping of
4 atomic ints!), just lock the mutex before calling it.
tst_bench_qthreadpool shows no difference whatsoever between the two
solutions, I get 0.005 msecs per iteration in startRunnables().
Of course looping over calls to activeThreadCount() is a bit slower,
from 0.0002 msecs per iteration to 0.00027 msecs, i.e. 35% more.
But polling activeThreadCount() from the app is a really wrong thing to
do anyway, this benchmark was just for my own curiosity about the
price of a mutex in a function that sums up 4 ints.
What matters is start() performance, which is unchanged (0.00007 msecs
is just noise compared to a 0.005 total, that's 1.4%).
Change-Id: I993444eef8bc68eff9badd581fae3626dfd1cc6d
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
QThreadPool::clear() method removes all queued QRunnable.
When a large number of long-running tasks are queud in a
QThreadPool its destruction, which calls waitForDone(), can
be quite long.
QThreadPool:clear() removes (and deletes when appropriate)
all QRunnable that have yet to be started from the queue
enabling a faster interruption.
Change-Id: Ie5d6028ad3cfe7e439d1db068c8d0936ff818db9
Reviewed-by: David Faure <david.faure@kdab.com>
Flip !Q_OS_IOS conditions to Q_OS_MACX where it seems appropriate,
remove a redundant condition in qtextcodec_p.h.
Change-Id: I21c8c0c490f1eb4a9337a7f2f3e907c125489438
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
It is deprecated and clang is starting to warn about it.
Patch mostly generated by clang itself, with some careful grep
and sed for the platform-specific parts.
Change-Id: I8058e6db0f1b41b33a9e8f17a712739159982450
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
We destroy the thread data for the main thread when the QCoreApplication
is destructed, and then delete the pthread key for the thread data in
the global static destructor function 'destroy_current_thread_data_key'.
The user may have its own Q_DESTRUCTOR_FUNCTION though, which may or may
not run after we've destroyed the key. If it runs after we've destroyed
the key, we'll end up trying to re-create the tread-data, as expected,
but set_thread_data() will fail to persist it, as pthread_setspecific
is called with an invalid key. The result is an infinite recursion:
...
6 in QThreadData::current () at qthread_unix.cpp:216
7 in QObject::QObject (this=0x48e1b30, dd=@0x48e1b40, parent=0x0) at qobject.cpp:703
8 in QThread::QThread (this=0x48e1b30, dd=@0x48e1b40, parent=0x0) at qthread.cpp:396
9 in QAdoptedThread::QAdoptedThread (this=0x48e1b30, data=0x48e1af0) at qthread.cpp:120
10 in QAdoptedThread::QAdoptedThread (this=0x48e1b30, data=0x48e1af0) at qthread.cpp:130
11 in QThreadData::current () at qthread_unix.cpp:219
12 in QObject::QObject (this=0x48e1a20, dd=@0x48e1a30, parent=0x0) at qobject.cpp:703
...
To solve this, we reset current_thread_data_once when destroying the key,
so that subsequent calls to pthread_once to potentially create the key
will call create_current_thread_data_key once more. This means we'll leak
the key for this particular use-case, since we don't end up calling
pthread_key_delete a second time, but this leak is small and happens
typically only for a short duration during application shutdown.
Change-Id: I580484a3239849e891172e24e7f77b75afd2c51b
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The optimisation done in cbaf52b099 for Qt
5.0 got the order wrong of the comparison. The queue must be sorted in
decreasing priority order. But since higher numbers mean higher
priority, that means the queue must be sorted in decreasing priority
number order.
Task-number: QTBUG-29163
Change-Id: Iaf3424b9bb445bf5c71518927f37253cead454f3
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
As described in the QTBUG-30872, there may be a race condition involving
3 threads fighting for a mutex. I am surprised it was not caught
before despite all the Q_ASSERT and the stress test in tst_qmutex.
We do not need to call store(0) because the unlocking thread will
eventually remove the BigNumber flag. And perhaps it even did it
already, and another thread has incremented waiters (hence the Q_ASSERT
is wrong)
Here is a paste of part of the description from the bug report:
---
many threads, one of them is ready to release mutex, while at least two other trying to acquire it
d->waiters is 0
Thread 1 release mutex in unlockInternal:
if (d->waiters.fetchAndAddRelease(-QMutexPrivate::BigNumber) == 0)
d->waiters is now -QMutexPrivate::BigNumber
Thread 2 try to acquire mutex in lockInternal:
old_waiters = d->waiters.load();
if (old_waiters == -QMutexPrivate::BigNumber) {
if (d_ptr.testAndSetAcquire(d, dummyLocked())) {
It acquire 'about to release mutex' by changing d to dummyLocked
Thread 1 continue release procedure:
d->derefWaiters(0);
d->waiters is now back to 0
Thread 3 try to acquire mutex in lockInternal:
while (!d->waiters.testAndSetRelaxed(old_waiters, old_waiters + 1));
d->waiters is now 1
Thread 2 continue its dummy lock:
d->waiters.store(0);
d->waiters is force to 0
Thread 3 continue wait procedure
but it realize that mutex was already unlocked so decrease back waiters
if (d != d_ptr.loadAcquire()) {
if (old_waiters != QMutexPrivate::BigNumber) {
d->waiters.deref();
d->waiters became negative value of -1
Neither thread need internal data so it is released back to pool
The waiters counter in released internal structure is still -1
---
Change-Id: I1b22555db764482775db6e64a8c9ffa9e1ab0cf6
Task-number: QTBUG-30872
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Simply say that the behaviour is undefined if you don't do what you must
do. I don't want to introduce a check: it can't be done reliably anyway.
Task-number: QTBUG-30806
Change-Id: Iba1bbbdfe62ffcb133f9c52215efdcc0ee7bd9bd
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
The comments in this file suggested that the bug was only present in clang/3.1.
However, qRegisterMetaType was failing even on clang 3.2
("tags/RELEASE_32/final"). The clang's bugzilla says [1] that the problem was
fixed two days before the release of 3.2, but apparently it didn't make it to
the release branch.
[1] http://llvm.org/bugs/show_bug.cgi?id=13470
Change-Id: I37db8f6f6b22ab939110e79240d92313c1786d6a
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
The Linux futex interface uses relative timeouts anyway, so this avoids
a double round-trip through clock_gettime: once in Qt code to calculate
absolute from relative and once in libc for reversing.
Glibc does not offer such a function because its pthread_cond objects
use a kernel interface that works on absolute times.
Change-Id: I8fbcd3f73d4364a16716b0eea17e8f5f9ab5cd05
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Even if the monotonic clock is available, Android's Bionic lacks the
pthread_condattr_setclock function, so we can't tell it to use the
monotonic clock.
Task-number: QTBUG-30450
Change-Id: I4f53708b1e834ff5d9462b3bf778b96c22662a04
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>
The value of priority was read without the mutex locked, from within
the thread.
Had to extract a QThreadPrivate::setPriority method so that it can be called
with the mutex already locked. So if the main thread calls setPriority
while the thread is starting, it will be either be before or after the
"re-set priority" code at thread startup, but at least not in the middle of it.
Change-Id: I7a054f68623f61482c749274da66f3b2dcd8bcee
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
postEvent() accesses it with the postEventList mutex locked, but
processEvent() was checking it without any mutex locked.
Change-Id: I31bbb50f7a1c337067b8e3de16ee7cd11400b517
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Remove all trailing whitespace from the following list of files:
*.cpp *.h *.conf *.qdoc *.pro *.pri *.mm *.rc *.pl *.qps *.xpm *.txt *README
excluding 3rdparty, test-data and auto generated code.
Note A): the only non 3rdparty c++-files that still
have trailing whitespace after this change are:
* src/corelib/codecs/cp949codetbl_p.h
* src/corelib/codecs/qjpunicode.cpp
* src/corelib/codecs/qbig5codec.cpp
* src/corelib/xml/qxmlstream_p.h
* src/tools/qdoc/qmlparser/qqmljsgrammar.cpp
* src/tools/uic/ui4.cpp
* tests/auto/other/qtokenautomaton/tokenizers/*
* tests/benchmarks/corelib/tools/qstring/data.cpp
* util/lexgen/tokenizer.cpp
Note B): in about 30 files some overlapping 'leading tab' and
'TAB character in non-leading whitespace' issues have been fixed
to make the sanity bot happy. Plus some general ws-fixes here
and there as asked for during review.
Change-Id: Ia713113c34d82442d6ce4d93d8b1cf545075d11d
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
don't test for building specific tools when we actually only want to
know whether we are bootstrapping. so far, this was only redundant; with
the upcoming change of not bootstrapping unnecessarily it would be
outright broken.
Change-Id: I7600d8ebb14a4194640c50035e35a04263f2ccce
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
The former applies both on Mac OS X and iOS, but 'macx' is specific to
Mac OS X.
ios.conf and macx.conf now share most of their settings in the common
mac.conf. We set the default QMAKE_MAC_SDK before loading mac.conf, so
that any overrides in the device config will apply afterwards. This
means configure's mkspec parsing will be able to read the QMAKE_MAC_SDK.
Change-Id: I0c7e26a6a0103e19b23ef152aa9e4ab461cee632
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
This avoids crashes accessing deleted memory when creating a QObject
after the last QObject had been deleted, like a qDebug() in global
destructors.
==41000== Invalid read of size 4
==41000== at 0x5F01ED5: bool QBasicAtomicOps<4>::ref<int>(int&) (qatomic_x86.h:208)
==41000== by 0x5F01309: QBasicAtomicInteger<int>::ref() (qbasicatomic.h:147)
==41000== by 0x5F24051: QThreadData::ref() (qthread.cpp:100)
==41000== by 0x614A984: QObject::QObject(QObject*) (qobject.cpp:681)
==41000== Address 0x6ee73f0 is 0 bytes inside a block of size 152 free'd
==41000== at 0x4A0736C: operator delete(void*) (vg_replace_malloc.c:480)
==41000== by 0x5F240BF: QThreadData::deref() (qthread.cpp:109)
==41000== by 0x6113F6B: QCoreApplicationData::~QCoreApplicationData() (qcoreapplication.cpp:268)
The comment right above the change in qthread.cpp looks eerily similar
to the problem I'm trying to fix. However, the actual change that
introduced the change is not in the Qt public history, so we can't
know for sure what the problem was then.
Change-Id: I0dba895b041fe6cf81e6f8939ca85035cd00aad1
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Based on the Necessitas project by Bogdan Vatra.
Contributors to the Qt5 project:
BogDan Vatra <bogdan@kde.org>
Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
hjk <hjk121@nokiamail.com>
Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Paul Olav Tvete <paul.tvete@digia.com>
Robin Burchell <robin+qt@viroteck.net>
Samuel Rødal <samuel.rodal@digia.com>
Yoann Lopes <yoann.lopes@digia.com>
The full history of the Qt5 port can be found in refs/old-heads/android,
SHA-1 249ca9ca2c7d876b91b31df9434dde47f9065d0d
Change-Id: Iff1a7b2dbb707c986f2639e65e39ed8f22430120
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
QtCore has a few headers that, though public, aren't meant to be
included directly. Those are the atomic headers, the three _impl.h
headers and qt_windows.h.
QtGui includes two OpenGL headers that don't compile on their own.
Other libraries should not have headers like that (but they do,
something we need to fix eventually).
Change-Id: I55e4eb057748f47df927ee618f9409acbc189cc1
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The new QThread documentation now really discourage to reimplement
QThread. But in fact, there are many cases where it is perfectly fine.
And the example given is even a case where using worker object is wrong.
The examle even contains a leak since the thread will never stop and
will even leak.
This changes put back some sentences from before commit
d4ad9dbbf9.
The sample code has been re-writen. Notice how reimpementing run takes
less lines of code, less runtime overhead, no leaks, and also is more
complete than the previous example.
Change-Id: I6cb80826e917dd5ce442ccad2572ec692ccb25ab
Reviewed-by: Andre Somers <andre@familiesomers.nl>
Reviewed-by: Geir Vattekar <geir.vattekar@digia.com>
Reviewed-by: Debao Zhang <hello@debao.me>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QThread::idealThreadCount returns now the number of cores.
Change-Id: Idc23fc3c257165f6a63c6a7686a57a4fe76f6413
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The macro was made empty in ba3dc5f3b5
and is no longer necessary or used.
Discussed-on: http://lists.qt-project.org/pipermail/development/2013-January/009284.html
Change-Id: Id2bb2e2cabde059305d4af5f12593344ba30f001
Reviewed-by: Laszlo Papp <lpapp@kde.org>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>
Make them use the monotonic clock if that's available. On Mac, the
monotonic clock is not available -- Qt fakes monotonic support by using
the Mach timebase -- so we need to use gettimeofday.
Change-Id: Iaea0b0c0de1b4802780e2476dc3643b703db392c
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
In VxWorks set default values for scheduling priority to use
SCHED_FIFO_HIGH_PRI and SCHED_FIFO_LOW_PRI defines for other scheduling
policies than SCHED_RR or SCHED_FIFO.
Change-Id: If78b84cd9ef94d7712206e9442e96cdba727610f
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>
Both qdoc and Q_QDOC are used in source code, which looks not good.
Change-Id: I4f3a71670278b0758d92bfa5db086a07e1b1acfd
Reviewed-by: hjk <qthjk@ovi.com>
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>
It's deprecated and it's not available on iOS anyway. The recommended
way of getting the number of processors online is via sysctl or
sysconf (both of which are just slightly below).
qthread_unix.cpp:397:13: error: 'MPProcessorsScheduled' is deprecated: first deprecated in Mac OS X 10.7 [-Werror,-Wdeprecated-declarations]
Change-Id: I4bf60985fbde155b78b840f3de3ff0a142b78b19
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
The Linux futex implementation had a Q_ASSERT for positive values, but
the documentation says that negative values should be interpreted as
infinite (equal to lock()).
Test that too.
Change-Id: I2f96a502d672732781e88e49797756ca9a809121
Reviewed-by: David Faure (KDE) <faure@kde.org>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Terms fixing. Changes apply to Qt5 as well as Qt4.
Change-Id: Ibb31ab0d68c62f3feb63722dd967932c2543fa37
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
qatomic.h includes qbasicatomic.h, so break the cyclic inclusion
problem.
Change-Id: If72bacbcfa36993336786f31e8980fbd43df8bdc
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Liang Qi
Kimmo Ollila
Martin Smith
Ulf Hermann
Marc Mutz
Oliver Wolff
Kai Koehne
Thiago Macieira
Raphael Kubo da Costa
Christian Strømme
Oswald Buddenhagen
Jake Petroules
Friedemann Kleint
David Faure
Giuseppe D'Angelo
Edward Welbourne
Olivier Goffart
James McDonnell
Anton Kudryavtsev
Liang Qi
Friedemann Kleint
Jani Heikkinen
Mitch Curtis
Paolo Angelelli
Volker Krause
Sérgio Martins
Simon Hausmann
Maurice Kalinowski
Frederik Gladhorn
Louai Al-Khanji
Morten Johan Sørvig
Edward Welbourne
jian liang
Jake Petroules
Andrew Knight
Erik Verbruggen
Kai Koehne
Tobias Koenig
Oliver Wolff
Joerg Bornemann
Martin Smith
Alexander Volkov
Andy Shaw
Yoann Lopes
Sze Howe Koh
Nick Shaforostoff
Tor Arne Vestbø
Gabriel de Dietrich
Nico Vertriest
Matti Paaso
Frederik Gladhorn
Adam Majer
Andrew Knight
Eskil Abrahamsen Blomfeldt
Oswald Buddenhagen
Friedemann Kleint
Fatih Aşıcı
Jerome Pasion
Oliver Wolff
Kamil Trzcinski
Sergio Ahumada
Corentin Jabot
Jake Petroules
Stephen Kelly
Jan Kundrát
Axel Waggershauser
Paul Olav Tvete
Florian Behrens
Pasi Petäjäjärvi
Debao Zhang
Michele Caini