For the thread that calls ::exit() (usually, the main thread).
Otherwise, depending on construction order, it is possible for the
QThreadStorage's destructor list to have been destroyed by the time
destroy_current_thread_data() → QThreadData::finish() calls our
finish().
Fixes: QTBUG-135044
Pick-to: 6.9 6.8
Change-Id: Ic5a10367ff31e7faa039fffdc2067eba9642fbf9
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
This is a thread-safe version of
QCoreApplication::instance() != nullptr
for Qt 6.x, because QCoreApplication::self is not atomic and thus
reading it from outside the main thread could be a data race.
That's not to say it always is: if by construction the code can only run
in the main thread or while QCoreApplication definitely exists, that's
safe. Therefore, this commit focuses on places that are meant to be used
in multi-threaded environment (ruling out most of QtGui and QtWidgets)
or where the code was going to dereference the returned pointer anyway.
Change-Id: I6fc556c5fe5cbe0b5902fffdfb6b3bb345b0ee50
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
This warning here was very confusing (so I'm also updating the language
to be clearer what it means). It is here to advise users of
QThreadStorage that they may have destroyed the object before all
threads using the object have finished. That means there will be memory
leaks, hence the user should fix the issue.
But the one time we don't care (too much) about memory leaks is when the
application is about to exit -- all memory is being released back to the
OS anyway. This may happen because of Static De-Initialization Order
Fiasco: the Q_GLOBAL_STATIC or equivalents holding QThreadStorage were
destroyed before the QThreadData for the exit()ing thread did. That
problem became more prevalent after the series of changes ending in
commit 2f69a05bd0cd7ce63890f709ff3ed7a4f78acd70, because that made the
QThreadData clean up happen very late in the execution.
Unfortunately, there's no way for us to know when we're being called
during application exit, so this is the next best thing:
QCoreApplication::instance() does not exist. We're using a private
function in QCoreApplication because in Qt 6.x, QCoreApplication::self
is not atomic and reading it would be a data race.
The QThread::currentThread() call was superfluous, because it was always
true. It was a relic from Qt 3, from before we had QAdoptedThread.
Pick-to: 6.8 6.9
Fixes: QTBUG-133500
Change-Id: I48d84d76f2b72483ed92fffdd54c6ad17e3d67d3
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
This is a semantic patch using ClangTidyTransformator as in
qtbase/df9d882d41b741fef7c5beeddb0abe9d904443d8, but extended to
handle typedefs and accesses through pointers, too:
const std::string o = "object";
auto hasTypeIgnoringPointer = [](auto type) { return anyOf(hasType(type), hasType(pointsTo(type))); };
auto derivedFromAnyOfClasses = [&](ArrayRef<StringRef> classes) {
auto exprOfDeclaredType = [&](auto decl) {
return expr(hasTypeIgnoringPointer(hasUnqualifiedDesugaredType(recordType(hasDeclaration(decl))))).bind(o);
};
return exprOfDeclaredType(cxxRecordDecl(isSameOrDerivedFrom(hasAnyName(classes))));
};
auto renameMethod = [&] (ArrayRef<StringRef> classes,
StringRef from, StringRef to) {
return makeRule(cxxMemberCallExpr(on(derivedFromAnyOfClasses(classes)),
callee(cxxMethodDecl(hasName(from), parameterCountIs(0)))),
changeTo(cat(access(o, cat(to)), "()")),
cat("use '", to, "' instead of '", from, "'"));
};
renameMethod(<classes>, "count", "size");
renameMethod(<classes>, "length", "size");
except that the on() matcher has been replaced by one that doesn't
ignoreParens().
a.k.a qt-port-to-std-compatible-api V5 with config Scope: 'Container'.
Added two NOLINTNEXTLINEs in tst_qbitarray and tst_qcontiguouscache,
to avoid porting calls that explicitly test count().
Change-Id: Icfb8808c2ff4a30187e9935a51cad26987451c22
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Replace the current license disclaimer in files by
a SPDX-License-Identifier.
Files that have to be modified by hand are modified.
License files are organized under LICENSES directory.
Task-number: QTBUG-67283
Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
It expands to the first available of
- constinit (C++20)
- [[clang::require_constant_initialization]] (Clang)
- __constinit (GCC >= 10)
Use it around the code (on and near static QBasicAtomic; this patch
makes no attempt to find all statics in qtbase).
[ChangeLog][QtCore][QtGlobal] Added macro Q_CONSTINIT.
Fixes: QTBUG-100484
Change-Id: I11e0363a7acb3464476859d12ec7f94319d82be7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Omitting state machine and docs for now.
Task-number: QTBUG-84469
Change-Id: Ibfa5e7035515773461f6cdbff35299315ef65737
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
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>
Semi-automated, just needed ~20 manual fixes:
$ find \( -iname \*.cpp -or -iname \*.h \) -exec perl -pe 's/(\.|->)load\(\)/$1loadRelaxed\(\)/g' -i \{\} +
$ find \( -iname \*.cpp -or -iname \*.h \) -exec perl -pe 's/(\.|->)store\(/$1storeRelaxed\(/g' -i \{\} +
It can be easily improved (e.g. for store check that there are no commas
after the opening parens). The most common offender is QLibrary::load,
and some code using std::atomic directly.
Change-Id: I07c38a3c8ed32c924ef4999e85c7e45cf48f0f6c
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Add it to configure.json and replace all occurrences of QT_NO_THREAD
with QT_CONFIG(thread). Add conditions for other features that depend
on thread support. Remove conditions where we can use the QMutex and
QThreadStorage stubs.
Change-Id: I284e5d794fda9a4c6f4a1ab29e55aa686272a0eb
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
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>
* 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>
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>
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>
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>
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>
QDoc now has support for Doxygen style commands for italics, bold
and list items. This change applies that change in QDoc to the
actual documentation.
Task-number: QTBUG-24578
Change-Id: I519bf9c29b14092e3ab6067612f42bf749eeedf5
Reviewed-by: Shane Kearns <shane.kearns@accenture.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
QBasicMutex is a POD and can be used as a static global object.
in qpicture.cpp factoryLoader is used only once, and under the mutex, so
there is no need for Q_GLOBAL_STATIC for it, it can be a function static
in qhostinfo_unix.cpp the code seemed wrong while compiled with
namespace and QT_NO_GETADDRINFO. I also could get rid of one include
because it was included earlier.
Change-Id: I3c700203c3e067266c20733f4bda8031446dbb86
Reviewed-by: Bradley T. Hughes <bradley.hughes@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>
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
