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* No-thread: Don’t assert in ~QThreadData()Morten Johan Sørvig2020-04-031-0/+2
| | | | | | | | The no-thread build is not maintaining the QThreadData refcount. Change-Id: I80ce4151b8da9391764ed3d820943dcac0d70999 Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
* 64-bit atomics: fix bad copy/paste in macro definitionsThiago Macieira2020-03-201-12/+12
| | | | | | Fixes: QTBUG-82864 Change-Id: I35d5bcc92b2e4bddaacbfffd15fc42d054fcb2b1 Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
* Fix memory leak on new QThreadPool::tryStart versionAllan Sandfeld Jensen2020-03-171-7/+12
| | | | | | | | Also documents the ownership of the traditional tryStart better, and remove a redundant check. Change-Id: I06202465b782926724fa33a901d08c1626f87373 Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
* Improve argument name for std::function argumentAllan Sandfeld Jensen2020-02-264-19/+19
| | | | | | | | | | | | Less \a fun though. Note using references in this API would just duplicate the API, but still end up with a copy when creating the QRunnable. By having the copy apparent directly in the API, we not only save the duplication, we also hint to the caller to use move if they want to avoid a copy. Change-Id: If11476d4b38853839c1e87e0339807a1798fc875 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Doc: Fix documentation warnings for Qt CoreTopi Reinio2020-02-251-6/+0
| | | | | | | | | | | | | | | | | | - QCborError: Classes cannot relate to header files; use \inheaderfile instead and link to the class from header file documentation. - QRecursiveMutex: QDoc doesn't allow shared documentation comments for duplicating \fn docs between the base and deriving classes. Remove the sharing, the function documentation is available under 'All Members' doc for QRecursiveMutex. - QMultiMap: unite() and one overload of insert() were not recognized because their definitions in the same header file interfered with QDoc - use Q_CLANG_QDOC macro to comment them out, and tag \fn comments to ensure that the function documentation is matched. Change-Id: Ic96869904a72d92453e4ffa6901000147571969b Reviewed-by: Paul Wicking <paul.wicking@qt.io>
* Add a constructor for QRunnable from anonymous functionsAllan Sandfeld Jensen2020-01-314-0/+66
| | | | | | | | | | This makes it easier to create one without having to create a derivative class. The patch also adds a path to avoid using QRunnable directly in QThreadPool. Change-Id: I9caa7dabb6f641b547d4771c863aa6ab7f01b704 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
* QThread::setPriority() Warn about invalid parameter on all platformsFriedemann Kleint2020-01-272-3/+5
| | | | | | | | | | | InheritPriority may not be set, but the warning only occurs on Windows. Move the warning to the public class. Change-Id: I51d401300f840e4c1396c2c30182e49ed45d60d2 Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io> Reviewed-by: Christian Tismer <tismer@stackless.com> Reviewed-by: David Faure <david.faure@kdab.com> Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
* Doc: Replace some usages of 0/zero/null with \nullptrSze Howe Koh2020-01-271-1/+1
| | | | | Change-Id: Ibe7de11fc6fc41477c35e7d653c6a911855deabb Reviewed-by: Paul Wicking <paul.wicking@qt.io>
* Merge remote-tracking branch 'origin/5.14' into 5.15Liang Qi2019-12-162-68/+142
|\ | | | | | | | | | | | | | | Conflicts: src/network/ssl/qsslsocket.cpp src/widgets/kernel/qapplication.cpp Change-Id: Ib7421cc2df59d0969f89b3fbd65a17ea76ffef3b
| * Doc: Fix qdoc compilation errors qtbaseNico Vertriest2019-12-122-68/+142
| | | | | | | | | | | | Task-number: QTBUG-79824 Change-Id: I6557de598de1931fc30556951d35783d02b83abe Reviewed-by: Paul Wicking <paul.wicking@qt.io>
* | QWaitCondition: un-deprecate wait() functions with ulong argChristian Ehrlicher2019-12-123-15/+4
| | | | | | | | | | | | | | | | | | | | The wait() functions with the unsigned long arg were marked for removal for Qt6 but due to the high usage of this functions and the very small gain, revert the deprecation. Change-Id: I9c9b720d279a59d87730f51de0f321b3794aa88e Reviewed-by: Paul Wicking <paul.wicking@qt.io> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* | Merge remote-tracking branch 'origin/5.14' into 5.15Liang Qi2019-12-102-7/+7
|\| | | | | | | | | | | | | Conflicts: tests/auto/network/kernel/qnetworkinterface/BLACKLIST Change-Id: I1e8866c63b54bcd95fc2a044276ee15b7f60e79a
| * Don't wrap feature detection macros with QT_HAS_FOO() variantsTor Arne Vestbø2019-12-102-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using wrappers for these macros is problematic when for example passing the -frewrite-includes flag to preprocess sources before shipping off to distcc or Icecream. It will also start producing warnings when compilers implement http://eel.is/c++draft/cpp.cond#7.sentence-2. See for example https://reviews.llvm.org/D49091 Both https://clang.llvm.org/docs/LanguageExtensions.html and the SD-6 document at https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations recommend defining '__has_foo(x) 0' as a fallback for compilers without the macros, so that's what we go for. Change-Id: I0298cd3b4a6ff6618821e34642a5ddd6728be767 Reviewed-by: Alex Richardson <arichardson.kde@gmail.com> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* | Tidy nullptr usageAllan Sandfeld Jensen2019-12-0611-34/+34
| | | | | | | | | | | | | | | | | | | | | | Move away from using 0 as pointer literal. Done using clang-tidy. This is not complete as run-clang-tidy can't handle all of qtbase in one go. Change-Id: I1076a21f32aac0dab078af6f175f7508145eece0 Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io> Reviewed-by: Lars Knoll <lars.knoll@qt.io>
* | INTEGRITY: remove constexpr supportGiuseppe D'Angelo2019-11-291-3/+3
| | | | | | | | | | | | | | | | | | | | It doesn't seem to be working correctly with array of literal types, blocking the patch refactoring the webgradient support: 10171: "painting/webgradients.cpp", line 79: error #28: expression must have a constant value Change-Id: I9ddd768d24ef79dd7a69e23c91988d891e41d4b9 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* | Port QThread::wait() to QDeadlineTimerChristian Ehrlicher2019-11-134-16/+32
| | | | | | | | | | | | | | | | | | So we are in sync with QWaitCondition::wait(). Task-number: QTBUG-64266 Change-Id: I1d7487786513241cedd35d202c4ddee4937b08ec Reviewed-by: Edward Welbourne <edward.welbourne@qt.io> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* | QWaitCondition: fix dummy QWaitCondition implementationChristian Ehrlicher2019-11-081-7/+14
| | | | | | | | | | | | | | | | | | | | The dummy implementation of QWaitCondition which is used when the thread feature is not available lacks some functions which were recently added. So we have to add them now. Change-Id: I32720e0857a1bd3fcf0e70078404a38dd8a8ca88 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
* | QWaitCondition: mark obsolete functions as deprecatedChristian Ehrlicher2019-11-076-24/+42
| | | | | | | | | | | | | | | | | | Mark QWaitCondition:wait(..., ulong) as deprecated so they can be removed in Qt6. Also replace the usages of this deprecated functions inside QtCore. Change-Id: I77313255fa05f5c112b0b40d4c55339cc4f85346 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* | Merge remote-tracking branch 'origin/5.14' into 5.15Qt Forward Merge Bot2019-10-301-0/+10
|\| | | | | | | Change-Id: Ib4df563fc7b1f7c40f425e0e71180d9517a672be
| * no-thread: Add dummy implementations for stackSize functions in QThreadEskil Abrahamsen Blomfeldt2019-10-281-0/+10
| | | | | | | | | | | | | | | | | | | | We recently added a call to setStackSize() in the QML thread, which revealed that the dummy implementation for this function was missing in no-thread builds. Fixes: QTBUG-79571 Change-Id: Ibabb48d9cba73afda0842642045a2961e65523f9 Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
* | Short live QtPrivate::{condition_variable,mutex}!Marc Mutz2019-09-272-0/+154
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a temporary measure to work around an implementation bug on Integrity: For all other platforms, QtPrivate::condition_variable is just std::condition_variable. On Integrity, it's a class that wraps QWaitCondition to provide the interface of std::condition_variable. This allows the use of std::condition_variable across Qt without running into the Integrity issue. Once we can depend on an more modern Integrity toolchain, removing QtPrivate::condition_variable is a simple mechanical change: s/QtPrivate::condition_variable/std::condition_variable/g; s/QtPrivate::mutex/std::mutex/g; Task-number: QTBUG-78450 Change-Id: I293a99d1cdc48691817b926aa51ecd84556e5e90 Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* | Merge remote-tracking branch 'origin/5.14' into 5.15Qt Forward Merge Bot2019-09-192-29/+22
|\| | | | | | | Change-Id: I46ec05ade1c84e61f7f45562a218aa9ff55e2975
| * Revert "QReadWriteLock: replace (QWaitCondition, QMutex) with ↵Jani Heikkinen2019-09-192-29/+22
| | | | | | | | | | | | | | | | | | | | | | std::(condition_variable, mutex)" This reverts commit 319c4786036b5f45fc95c683cef5cf5ba2ce2a6d. Reason for revert: QTBUG-78450 Change-Id: Ifaea83626296508558591d4ff207d4e0c883f841 Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
* | Merge remote-tracking branch 'origin/5.14' into 5.15Qt Forward Merge Bot2019-09-171-4/+8
|\| | | | | | | Change-Id: I4d7f0e35f4a6ccb6d5494f947fd82fc276feadd3
| * Revert "Revert "Deprecate QAtomic::load() / store()""Giuseppe D'Angelo2019-09-161-4/+8
| | | | | | | | | | | | | | | | | | | | This reverts commit 5859f7d0d9440f82086486639a707f3935696cf4. Reason for revert: the blocker for qtdeclarative has been merged (in qtdeclarative/c060f6e765a2f155b38158f2ed73eac4aad37e02). Change-Id: Ie69cb1567417173f543e88f659658fe03ba28830 Reviewed-by: Liang Qi <liang.qi@qt.io>
* | Merge remote-tracking branch 'origin/5.14' into 5.15Qt Forward Merge Bot2019-09-162-38/+44
|\| | | | | | | Change-Id: Ie24be82ee70bf103c2664de1a42741979262b10c
| * QReadWriteLock: replace (QWaitCondition, QMutex) with ↵Marc Mutz2019-09-132-22/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | std::(condition_variable, mutex) It turns out that QWaitCondition is a std::condition_variable_any. The _any variant works with any mutex type, but requires a native mutex for the native condition variable. So, QWaitCondition and std::condition_variable_any both require two different mutexes: the one the user passes in, and an internal one. std::condition_variable, however, only works with std::mutex, and since both are backed by the native API, condition_variable can use the mutex passed in by the user instead of having to use an internal one. So, port from 2 × QWaitCondition + QMutex (2 × native cond + 2 × native mutex + Qt mutex) to std::condition_variable + std::mutex (2 × native cond + native mutex), shaving the overhead of two additional mutexes (one Qt, one native) as well as the memory allocation performed by QWaitCondition (for its Private). Speeds up the writeOnly case by ~1/8th: PASS : tst_QReadWriteLock::writeOnly(QReadWriteLock) RESULT : tst_QReadWriteLock::writeOnly():"QReadWriteLock": - 39,703 msecs per iteration (total: 39,703, iterations: 1) + 34,950 msecs per iteration (total: 34,950, iterations: 1) Change-Id: I196cb13a27242fc1cb99723dfab5b2e5f8522143 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io> Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io> Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com> Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
| * Port QReadWriteLock from QMutexLocker to qt_unique_lockMarc Mutz2019-09-131-6/+7
| | | | | | | | | | | | | | | | | | Most of these are unique_locks because they call QWaitCondition::wait() and it doesn't feel right to use qt_scoped_lock if the lock is dropped within the scope. Change-Id: I506eede63008dad135c21112e578da4f7684e528 Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
| * QReadWriteLock: use NSDMI to simplify the Private ctorMarc Mutz2019-09-121-10/+8
| | | | | | | | | | | | Change-Id: I7267dedb152186ad8c74cbf2eddd863c3bc0845f Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com> Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
* | QSemaphoreReleaser: two minor code improvementsMarc Mutz2019-09-051-5/+2
|/ | | | | | | | | - use qExchange() in cancel() - use cancel() instead of manual pointer manipulations in the move ctor Change-Id: Ica3a3a1e339500c5e5a0c0646e7a95c7c5d435db Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
* QReadWriteLock QT_NO_THREAD shell: make API compatible with the regular oneMarc Mutz2019-08-281-14/+14
| | | | | | | | | | | | | - add missing explicit - drop static from member functions that aren't static in the regular version (ie. all functions) As a drive-by, remove redundant inline keyword where it doesn't cause wanton inconsistency with surrounding code. Change-Id: I5aed73c3afa85d98d97b57c2c1874b1a5e664960 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io> Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
* Merge remote-tracking branch 'origin/dev' into 5.14Liang Qi2019-08-271-22/+1
|\ | | | | | | | | | | | | | | | | | | | | Conflicts: src/widgets/kernel/qwidget.cpp src/widgets/kernel/qwidget_p.h src/widgets/kernel/qwidgetrepaintmanager.cpp src/widgets/kernel/qwidgetwindow.cpp tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp Change-Id: Ifae457d0427be8e2465e474b055722e11b3b1e5c
| * Remove workaround for compilers not supporting thread_localVolker Hilsheimer2019-08-201-22/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With C++11, all compilers support thread_local, which replaces the non- standardized __thread attribute as a storage class. The storage class was specifically introduced so that applications do not have to deal with pthread APIs for TLS key management. We still need to have some of that logic for adopting foreign threads, but we can rely on thread_local so that we get a fast implementation of QThread::currentThread() on all platforms. Change-Id: Iba2b35d014044c4ab317a0e127c5d1f1fa4ecd4a Reviewed-by: Marc Mutz <marc.mutz@kdab.com> Reviewed-by: Lars Knoll <lars.knoll@qt.io>
* | Port away from QMutexLocker in public headersMarc Mutz2019-08-252-5/+13
|/ | | | | | | | | | | | | | | | | We can't use qt_scoped_lock/qt_unique_lock here, so port to std::unique_lock and std::lock_guard for now. This is in preparation of deprecating QMutexLocker in favor of std::unique_lock and std::scoped_lock. In QFutureInterface, change the return type of mutex() from QMutex* to QMutex&, so we don't need to deref when passing to std::lock_guard. We need to keep the old method around for BC reasons, so the new one needs an artificial function argument for disambiguation. This will vanish come Qt 6. Change-Id: I1a0f0205952a249512ec2dbd3f0f48dd209b1636 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* Merge "Merge remote-tracking branch 'origin/5.13' into dev"Liang Qi2019-08-131-0/+2
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| * Merge remote-tracking branch 'origin/5.13' into devLiang Qi2019-08-131-0/+2
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: mkspecs/win32-clang-msvc/qmake.conf src/corelib/tools/qlist.h src/gui/painting/qcompositionfunctions.cpp src/gui/painting/qtriangulator_p.h src/gui/text/qfontengine_p.h src/network/kernel/qhostinfo_p.h src/platformsupport/fontdatabases/freetype/qfontengine_ft.cpp Done-With: Allan Sandfeld Jensen <allan.jensen@qt.io> Change-Id: Ib8a0308cf77224c4fbdcf56778fdac4a43e37798
| | * Merge remote-tracking branch 'origin/5.12' into 5.13Qt Forward Merge Bot2019-08-083-4/+9
| | |\ | | | | | | | | | | | | Change-Id: I4c0fd501db974fb8339944b8df845336776d80a9
| | | * QMutexPool: fix memory order of atomic operationsMarc Mutz2019-08-052-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The array of QAtomicPointer<QMutex> can be initialized using relaxed stores of nullptr, since nullptr is the whole data. But once we store an actual QMutex pointer in the array, we need to publish the indirect data thus created. We did this, with testAndSetRelease(); what was missing was a corresponding acquire fence on load, without which there is no happens-before relationship between the writes performed by the QMutex ctor and the reads performed by a subsequent mutex.lock(), say, on the same data. Fix by adding acquire fences to all loads. That includes the dtor, since mutexes may have been created in different threads, and never been imported into this_thread before the dtor is running. As a drive-by, return a new'ed QMutex that was successfully installed directly to the caller, without again going through a load-acquire. Fixes: QTBUG-59164 Change-Id: Ia25d205b1127c8c4de0979cef997d1a88123c5c3 Reviewed-by: David Faure <david.faure@kdab.com> Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> (cherry picked from commit 65b8f59e045bb41fef99b1a44f462115de65064a) (cherry picked from commit da38f0d691d9d7eacfac5fbcbd47b887bd59bd39)
| | | * Fix race condition on qt_create_tls() on WindowsThiago Macieira2019-08-051-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If this function is called by multiple threads, more than one could reach the mutex locking and call TlsAlloc(), but only the last one would save the data. The others would be leaked and, worse, be used by those other threads. [ChangeLog][QtCore][QObject] Fixed a resource leak caused by a race condition if multiple QObjects were created at the same time, for the first time in an application, from multiple threads (implies threads not started with QThread). Fixes: QTBUG-77238 Change-Id: Ife213d861bb14c1787e1fffd15b63a5818bcc807 Reviewed-by: Marc Mutz <marc.mutz@kdab.com> Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
| | * | Merge remote-tracking branch 'origin/5.12' into 5.13Liang Qi2019-06-203-9/+15
| | |\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: .qmake.conf src/gui/painting/qdrawhelper.cpp src/network/ssl/qsslsocket_openssl.cpp src/widgets/styles/qstylesheetstyle.cpp Change-Id: Ibe1cd40f46a823c9e5edbe0a3cd16be1e1686b17
* | | | Short live qt_unique_lock/qt_scoped_lock! (until C++17)Marc Mutz2019-08-132-0/+120
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that QRecursiveMutex is getting split off of QMutex, QMutexLocker will stop working on QRecursiveMutex once the split has been finalized in Qt 6. Even today, QMutexLocker contains casts from QBasicMutex to QMutex that some reviewers are uncomfortable with. One way to carry QMutexLocker forward is to template it on the mutex type, possibly with aliases like QBasicMutexLocker and QRecursiveMutexLocker. C++17 code would then not require a port, thanks to CTAD. But we have the problem now, and we can't template QMutexLocker in Qt 5. The alternative is to look at std and realize that they have surpassed QMutexLocker in expressiveness already. A scoped_lock cannot be unlocked again, a unique_lock can be moved around. QMutexLocker doesn't do either. The only "problem" is that the std lock classes are already templates, but we can't, yet, rely on C++17 CTAD to make them look as if they weren't. So, prepare for a future with C++17 CTAD by writing factory functions, qt_scoped_lock and qt_unique_lock, which will later port mechanically to their C++17 equivalents (mostly). The functions are added to a new private qlocking_p.h becauee we don't want to make them public. These are for use in Qt's own implementation, or for users that don't care about compatibility and will not mind them to be removed once we depend on C++17. Originally, I planned to use qmutex_p.h instead, but that header is not self-contained and causes build errors when we started to include it into libraries other than QtCore. Regarding the return value of qt_scoped_lock: Ideally, we'd like to return a std::scoped_lock, but two things stand in the way: First, scoped_lock was only added in C++17 (we fall back to lock_guard if scoped_lock is not available). Second, returning one from a function requires C++17 guaranteed copy elision, because neither scoped_lock not lock_guard have a copy ctor. In order for code not to come to depend on a particular lock class, we return any of lock_guard, unique_lock or scoped_guard, depending on what the compiler supports, and therefore wrap the functions in the unnamed namespace to avoid running into ODR if (private) headers are used from different projects (autotests, e.g.). By the time we can drop them, however, qt_*_lock will be semantically 100% identical to their replacements. Port some initial users. Change-Id: I2a208ef2a4a533ee8e675812273986460e6b4d00 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* | | Fix more implicit QAtomic<T> <-> T conversionsMarc Mutz2019-07-161-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These were hidden in !QT_CONFIG(thread) code. The irony! This patch does not change the semantics of the operations. It just makes the implicit operations explicit. Any fixes or optimizations are left for follow-up patches, if any. Change-Id: I014eb71745532dae2efe7963aa87321f61b1bd7a Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
* | | return value in QOrderedMutexLocker::relock when thread is disabledTasuku Suzuki2019-07-111-1/+1
| | | | | | | | | | | | | | | Change-Id: Ic96e777491cc8d304be056a3476a4de4c4700a0f Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
* | | Inline QMutexPool into its only remaining userMarc Mutz2019-07-083-241/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also reduce the pool size from 131 to 17, and use QBasicMutex instead of recursive ones. Change-Id: I3bf0374cce5ff2c07427070aba6128a22c9b70e4 Reviewed-by: Lars Knoll <lars.knoll@qt.io> Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io> Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
* | | Short live QRecursiveMutex!Marc Mutz2019-07-062-12/+122
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the recursive mutex use case out of QMutex into a separate class, unsurprisingly called QRecursiveMutex. As an immediate benefit, 90% of the QMutex users now enjoy a constexpr QMutex ctor. This change prepares for a real split in Qt 6, so that both use-cases are no longer bundled up in one class. [ChangeLog][QtCore][QMutex] Added QRecursiveMutex as a replacement of QMutex(QMutex::Recursive). Change-Id: I79b8724e8a8ee65e4bd0f06acd76103fe4197b8c Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
* | | rtems: Add environment variable for configure default thread stack sizeMikhail Svetkin2019-07-011-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The default stack size is too small on RTEMS. Qt uses threads internally and there is no way to change their stack size. Change-Id: I94a42c7a70c745f0b50d7051d9320edfabd1e09e Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
* | | QMutexPool: fix memory order of atomic operationsMarc Mutz2019-06-292-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The array of QAtomicPointer<QMutex> can be initialized using relaxed stores of nullptr, since nullptr is the whole data. But once we store an actual QMutex pointer in the array, we need to publish the indirect data thus created. We did this, with testAndSetRelease(); what was missing was a corresponding acquire fence on load, without which there is no happens-before relationship between the writes performed by the QMutex ctor and the reads performed by a subsequent mutex.lock(), say, on the same data. Fix by adding acquire fences to all loads. That includes the dtor, since mutexes may have been created in different threads, and never been imported into this_thread before the dtor is running. As a drive-by, return a new'ed QMutex that was successfully installed directly to the caller, without again going through a load-acquire. Change-Id: Ia25d205b1127c8c4de0979cef997d1a88123c5c3 Reviewed-by: David Faure <david.faure@kdab.com> Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* | | Port from implicit to explicit atomic pointer operationsMarc Mutz2019-06-292-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The old code used the implicit conversions from QAtomicPointer<T> to T* and vice versa. The semantics of these differ from the ones std::atomic uses, so we're going to deprecate these, like we did for load() and store(), too. This patch fixex some users of these APIs before we deprecate them. Change-Id: I0a88bb1c359392538bb64b511bfc62381a56a468 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
* | | Revert "Deprecate QAtomic::load() / store()"Liang Qi2019-06-261-8/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 79bdc7cf1daec75df59de9236599a9f24077511a. We haven't ported every usages to loadRelaxed() / storeRelaxed() yet. And warning as error is enabled in dev. We will revert this change when new qt5 baseline got integrated. Task-number: QTBUG-76611 Change-Id: I5b1f608fefbaca481311f376f22718f2c5047106 Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io> Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>
* | | Merge remote-tracking branch 'origin/5.12' into devLiang Qi2019-06-253-9/+15
|\ \ \ | | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: .qmake.conf src/gui/painting/qdrawhelper.cpp src/gui/text/qdistancefield.cpp src/gui/text/qdistancefield_p.h src/network/ssl/qsslsocket_openssl.cpp src/plugins/platforms/android/qandroidinputcontext.cpp src/widgets/styles/qstylesheetstyle.cpp Done-With: Timur Pocheptsov <timur.pocheptsov@qt.io> Change-Id: Ia7daad21f077ea889898f17734ec46303e71fe6b
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-15 18:12:57 +0000