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>
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>
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>
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Outdated header.LGPL removed (use header.LGPL21 instead)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 primarily to get a cleaner build of src/tools
under -Wnoexcept.
Change-Id: I0dea21e70aad56b25675fc59fac0327b55ee83e3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.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>
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>
The macro was made empty in ba3dc5f3b56d1fab6fe37fe7ae08096d7dc68bcb
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>
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>
Change copyrights and license headers from Nokia to Digia
Change-Id: If1cc974286d29fd01ec6c19dd4719a67f4c3f00e
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
The non-futex implementation does not support timed locks in
QBasicMutex. That is only supported in QMutex (due to the
destructor).
Change-Id: I46d33a66a36e05c8a4344823537178e80a6ddd76
Reviewed-by: Qt Doc Bot <qt_docbot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Non-timed mutex locks are by far more common, so let's try not to
penalise the locking of those with code that won't get used that
often.
Change-Id: I37f56d6429836467fdec2e588c0fb22d914b5d75
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Dispatch to the recursive mutex functions from QMutex::lock, tryLock
and unlock.
This has the benefit that those using QBasicMutex will not go through
the testing for recursive mutexes. It simplifies a little the code for
those users.
For the users of QMutex, the code required to perform a lock does not
appear to change.
Change-Id: I0ca9965e012b283c30f1fab8e9f6d9b3288c2247
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Unlocking a mutex can never throw an exception. That doesn't make
sense and our code should make sure it can't happen. Right now,
provided that the system-level functions don't throw, we don't either.
Locking a mutex cannot throw on Linux because we use futexes
directly. A non-recursive mutex is just a futex, whereas a recursive
mutex uses a mutex (a futex) to manage a lock count.
However, on other platforms, due to the freelist, there can be memory
allocation, which means it might throw std::bad_alloc. Not because of
the freelist itself (that uses malloc and will just crash if malloc
fails) but because of Q_GLOBAL_STATIC. In 5.1, the global static will
be noexcept provided the type's constructor is so too (it is, in this
case).
Change-Id: I4c562383f48de1be7827b9afb512d73eaf0792d5
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QMutexLocker does not support being passed already-locked mutexes,
unless they are recursive mutexes. But in that case, it behaves as if
the mutex weren't locked in the first place.
Since that's the case, there's no point in testing the low bit to see if
it's set or not. It's never going to be.
Change-Id: Ie4b81f7e2cca16e6db36f3cb51a5377dbdfc157d
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
See the discussion of this topic on the mailing list:
http://lists.qt-project.org/pipermail/development/2012-May/003943.html
The consensus is to not have these methods have inline code to actually
acquire the lock (i.e. no atomic test-and-set or similar). QBasicMutex
is unchanged, and continues to have inlined lock(), tryLock(), and
unlock(). QMutexLocker has been changed to always call QMutex::lock()
(even though the constructor takes a QBasicMutex parameter).
Change-Id: Ic7d2d9d581e6b254c84fdfdd8ce6c425535a8078
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This change fixes most qdoc errors in QtCore. There are about 900 left.
The main thing this change does is moving documentation from qtcore from
/doc/src to /src/corelib/doc.
Other issues resolved are mis-use of qdoc commands.
Change-Id: I002d01edfb13575e8bf27ce91596a577a92562d1
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@nokia.com>
As in the past, to avoid rewriting various autotests that contain
line-number information, an extra blank line has been inserted at the
end of the license text to ensure that this commit does not change the
total number of lines in the license header.
Change-Id: I311e001373776812699d6efc045b5f742890c689
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
These defines were there to aid in the commercial
licensing scheme we used long ago, and are no longer needed.
Keep a QT_MODULE(x) define so other modules continue compiling.
Change-Id: I8fd76cd5270df8f14aee746b6cf32ebf7c23fec7
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
QMutexPrivate takes more memory than necessary, and also initialize
platform specific ressources.
Change-Id: I70be1b89b1c21499645785ae47693a6b2514e28b
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Because we use d as a local variable.
We used this->d to refer it, but this can be confusing to have twice the same
name
Change-Id: I570aa5f444ada358eb456d6b3d9b8bfa60b10bbf
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Most of these changes are search-and-replace of d->ref ==, d->ref !=
and d->ref =.
The QBasicAtomicPointer in QObjectPrivate::Connection didn't need to
be basic, so I made it QAtomicPointer.
Change-Id: Ie3271abd1728af599f9ab17c6f4868e475f17bb6
Reviewed-on: http://codereview.qt-project.org/5030
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
And added a POD QBasicMutex. (QBasicMutex* can safely be
static_cast'ed to QMutex*)
The d pointer is not anymore always a QMutexPrivate.
If d == 0x0: the mutex is unlocked
If d == 0x1: the mutex is locked, uncontended
On linux:
if d == 0x3: the mutex is locked contended, waiting on a futex
If d is a pointer, it is a recursive mutex.
On non-linux platforms:
When a thread tries to lock a mutex for which d == 0x1, it will try to
assing it a QMutexPrivated (allocated from a freelist) in order to wait
for it.
Change-Id: Ie1431cd9402a576fdd9a693cfd747166eebf5622
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Reviewed-on: http://codereview.qt.nokia.com/2116
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Olivier Goffart <olivier.goffart@nokia.com>
This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:
http://qt.gitorious.org/qt/pages/GitIntroductionWithQt
If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.
Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
