AuroraMiddleware/qt5base-lts
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix multiple threads accessing same byte

Browse Source 
We can not thread mono image formats as the bit access isn't atomic.

Pick-to: 6.6 6.5
Fixes: QTBUG-117494
Change-Id: Ica8e08fc3da73983f6b4da2a133f5e715fd0d787
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
This commit is contained in:
Allan Sandfeld Jensen 2023-11-09 11:25:39 +01:00
parent 78512135c8
commit 6532dc5d37
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/gui/painting/qdrawhelper.cpp
View File

@ -3779,7 +3779,8 @@ static void spanfill_from_first(QRasterBuffer *rasterBuffer, QPixelLayout::BPP b
#define QT_THREAD_PARALLEL_FILLS(function) \
const int segments = (count + 32) / 64; \
QThreadPool *threadPool = QThreadPoolPrivate::qtGuiInstance(); \
if (segments > 1 && threadPool && !threadPool->contains(QThread::currentThread())) { \
if (segments > 1 && qPixelLayouts[data->rasterBuffer->format].bpp >= QPixelLayout::BPP8 \
&& threadPool && !threadPool->contains(QThread::currentThread())) { \
QSemaphore semaphore; \
int c = 0; \
for (int i = 0; i < segments; ++i) { \