diff options
| -rw-r--r-- | src/corelib/kernel/qproperty.cpp | 10 | ||||
| -rw-r--r-- | src/corelib/thread/qthread.h | 3 |
2 files changed, 12 insertions, 1 deletions
diff --git a/src/corelib/kernel/qproperty.cpp b/src/corelib/kernel/qproperty.cpp index 82ab3b9b59..3123858d83 100644 --- a/src/corelib/kernel/qproperty.cpp +++ b/src/corelib/kernel/qproperty.cpp @@ -523,8 +523,12 @@ void QPropertyBindingData::notifyObservers(QUntypedPropertyData *propertyDataPtr if (QPropertyObserverPointer observer = d.firstObserver()) { auto status = storage ? storage->bindingStatus : nullptr; QPropertyDelayedNotifications *delay; +#ifndef QT_HAS_FAST_CURRENT_THREAD_ID + status = &bindingStatus; +#else if (!status || status->threadId != QThread::currentThreadId()) status = &bindingStatus; +#endif delay = status->groupUpdateData; if (delay) { delay->addProperty(this, propertyDataPtr); @@ -2171,12 +2175,16 @@ void QBindingStorage::registerDependency_helper(const QUntypedPropertyData *data Q_ASSERT(bindingStatus); // Use ::bindingStatus to get the binding from TLS. This is required, so that reads from // another thread do not register as dependencies - const bool threadMatches = (QThread::currentThreadId() == bindingStatus->threadId); QtPrivate::BindingEvaluationState *currentBinding; +#ifdef QT_HAS_FAST_CURRENT_THREAD_ID + const bool threadMatches = (QThread::currentThreadId() == bindingStatus->threadId); if (Q_LIKELY(threadMatches)) currentBinding = bindingStatus->currentlyEvaluatingBinding; else currentBinding = QT_PREPEND_NAMESPACE(bindingStatus).currentlyEvaluatingBinding; +#else + currentBinding = QT_PREPEND_NAMESPACE(bindingStatus).currentlyEvaluatingBinding; +#endif QUntypedPropertyData *dd = const_cast<QUntypedPropertyData *>(data); if (!currentBinding) return; diff --git a/src/corelib/thread/qthread.h b/src/corelib/thread/qthread.h index 51cd3eadcc..e48354dedb 100644 --- a/src/corelib/thread/qthread.h +++ b/src/corelib/thread/qthread.h @@ -186,6 +186,8 @@ QThread *QThread::create(Function &&f, Args &&... args) */ inline Qt::HANDLE QThread::currentThreadId() noexcept { + // define is undefed if we have to fall back to currentThreadIdImpl +#define QT_HAS_FAST_CURRENT_THREAD_ID Qt::HANDLE tid; // typedef to void* static_assert(sizeof(tid) == sizeof(void*)); // See https://akkadia.org/drepper/tls.pdf for x86 ABI @@ -219,6 +221,7 @@ inline Qt::HANDLE QThread::currentThreadId() noexcept // Then read the thread ID tid = *reinterpret_cast<Qt::HANDLE *>(tib + 0x24); #else +#undef QT_HAS_FAST_CURRENT_THREAD_ID tid = currentThreadIdImpl(); #endif return tid; |