diff options
| author | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2024-11-18 11:09:32 +0100 |
|---|---|---|
| committer | Eirik Aavitsland <eirik.aavitsland@qt.io> | 2024-11-18 17:15:47 +0000 |
| commit | 7a8cefd6fb66e6bc6880aaf5a938194611278bed (patch) | |
| tree | 832eb6706c2c89c40a33231af6a5448f1853ecbc /src/corelib/thread/qthreadpool.cpp | |
| parent | 7b024cc1749494114fffc3c434b58846707a64af (diff) | |
Facilitate disabling multi-threading in image manipulation and painting
On some platforms and setups, the multi-threaded implementation of this functionality is not desirable. Allow disabling it at runtime by setting the environment variable QT_NO_GUI_THREADPOOL.
Pick-to: 6.8
Task-number: QTBUG-129650
Change-Id: If089ecb3b335defc06f14749841bf9f6041e6f5e
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Diffstat (limited to 'src/corelib/thread/qthreadpool.cpp')
| -rw-r--r-- | src/corelib/thread/qthreadpool.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/corelib/thread/qthreadpool.cpp b/src/corelib/thread/qthreadpool.cpp index 18d4103fdfc..55f13a6b02a 100644 --- a/src/corelib/thread/qthreadpool.cpp +++ b/src/corelib/thread/qthreadpool.cpp @@ -481,7 +481,9 @@ QThreadPool *QThreadPoolPrivate::qtGuiInstance() { Q_CONSTINIT static QPointer<QThreadPool> guiInstance; Q_CONSTINIT static QBasicMutex theMutex; - + const static bool runtime_disable = qEnvironmentVariableIsSet("QT_NO_GUI_THREADPOOL"); + if (runtime_disable) + return nullptr; const QMutexLocker locker(&theMutex); if (guiInstance.isNull() && !QCoreApplication::closingDown()) { guiInstance = new QThreadPool(); |