diff options
Diffstat (limited to 'src/corelib/thread/qthread.cpp')
| -rw-r--r-- | src/corelib/thread/qthread.cpp | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/src/corelib/thread/qthread.cpp b/src/corelib/thread/qthread.cpp index 5527cfcd84d..ae280e3671b 100644 --- a/src/corelib/thread/qthread.cpp +++ b/src/corelib/thread/qthread.cpp @@ -13,6 +13,8 @@ QT_BEGIN_NAMESPACE +using namespace Qt::StringLiterals; + /* QPostEventList */ @@ -113,6 +115,20 @@ QAbstractEventDispatcher *QThreadData::createEventDispatcher() QAdoptedThread::QAdoptedThread(QThreadData *data) : QThread(*new QThreadPrivate(data)) { + // avoid a cyclic reference count: QThreadData owns this QAdoptedThread + // object but QObject's constructor increased the count + data->deref(); + + data->isAdopted = true; + Qt::HANDLE id = QThread::currentThreadId(); + data->threadId.storeRelaxed(id); + if (!QCoreApplicationPrivate::theMainThreadId.loadAcquire()) { + // we are the main thread + QCoreApplicationPrivate::theMainThread.storeRelease(this); + QCoreApplicationPrivate::theMainThreadId.storeRelaxed(id); + setObjectName(u"Qt mainThread"_s); + } + // thread should be running and not finished for the lifetime // of the application (even if QCoreApplication goes away) #if QT_CONFIG(thread) @@ -1130,15 +1146,6 @@ QThreadData *QThreadData::current(bool createIfNecessary) if (!data && createIfNecessary) { data = new QThreadData; data->thread = new QAdoptedThread(data); - data->threadId.storeRelaxed(Qt::HANDLE(data->thread.loadAcquire())); - data->deref(); - data->isAdopted = true; - if (!QCoreApplicationPrivate::theMainThreadId.loadAcquire()) { - auto *mainThread = data->thread.loadRelaxed(); - mainThread->setObjectName("Qt mainThread"); - QCoreApplicationPrivate::theMainThread.storeRelease(mainThread); - QCoreApplicationPrivate::theMainThreadId.storeRelaxed(data->threadId.loadRelaxed()); - } } return data; } |