diff options
Diffstat (limited to 'src/gui/painting/qimagescale_neon.cpp')
-rw-r--r-- | src/gui/painting/qimagescale_neon.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/gui/painting/qimagescale_neon.cpp b/src/gui/painting/qimagescale_neon.cpp index 65fe3fac3c..046e56b419 100644 --- a/src/gui/painting/qimagescale_neon.cpp +++ b/src/gui/painting/qimagescale_neon.cpp @@ -58,12 +58,13 @@ static inline void multithread_pixels_function(QImageScaleInfo *isi, int dh, con #if QT_CONFIG(thread) && !defined(Q_OS_WASM) int segments = (qsizetype(isi->sh) * isi->sw) / (1<<16); segments = std::min(segments, dh); - if (segments > 1) { + QThreadPool *threadPool = QThreadPool::globalInstance(); + if (segments > 1 && !threadPool->contains(QThread::currentThread())) { QSemaphore semaphore; int y = 0; for (int i = 0; i < segments; ++i) { int yn = (dh - y) / (segments - i); - QThreadPool::globalInstance()->start([&, y, yn]() { + threadPool->start([&, y, yn]() { scaleSection(y, y + yn); semaphore.release(1); }); |